diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-26 10:23:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-26 10:23:47 -0700 |
| commit | 9fc377799bc9bfd8d5cb35d0d1ea2e2458cbdbb3 (patch) | |
| tree | fe93603b4e33dd50ff5f95ff769a0748b230cdf9 /drivers/usb | |
| parent | 5e23ae49960d05f578a73ecd19749c45af682c2b (diff) | |
| parent | e387ef5c47ddeaeaa3cbdc54424cdb7a28dae2c0 (diff) | |
Merge tag 'usb-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB patches from Greg Kroah-Hartman:
"Here's the big USB patch set for the 3.6-rc1 merge window.
Lots of little changes in here, primarily for gadget controllers and
drivers. There's some scsi changes that I think also went in through
the scsi tree, but they merge just fine. All of these patches have
been in the linux-next tree for a while now.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fix up trivial conflicts in include/scsi/scsi_device.h (same libata
conflict that Jeff had already encountered)
* tag 'usb-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (207 commits)
usb: Add USB_QUIRK_RESET_RESUME for all Logitech UVC webcams
usb: Add quirk detection based on interface information
usb: s3c-hsotg: Add header file protection macros in s3c-hsotg.h
USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer
USB: add USB_VENDOR_AND_INTERFACE_INFO() macro
USB: notify phy when root hub port connect change
USB: remove 8 bytes of padding from usb_host_interface on 64 bit builds
USB: option: add ZTE MF821D
USB: sierra: QMI mode MC7710 moved to qcserial
USB: qcserial: adding Sierra Wireless devices
USB: qcserial: support generic Qualcomm serial ports
USB: qcserial: make probe more flexible
USB: qcserial: centralize probe exit path
USB: qcserial: consolidate usb_set_interface calls
USB: ehci-s5p: Add support for device tree
USB: ohci-exynos: Add support for device tree
USB: ehci-omap: fix compile failure(v1)
usb: host: tegra: pass correct pointer in ehci_setup()
USB: ehci-fsl: Update ifdef check to work on 64-bit ppc
USB: serial: keyspan: Removed unrequired parentheses.
...
Diffstat (limited to 'drivers/usb')
137 files changed, 7447 insertions, 4053 deletions
diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index fd36dc8b889b..8337fb5d988d 100644 --- a/drivers/usb/chipidea/Kconfig +++ b/drivers/usb/chipidea/Kconfig @@ -20,6 +20,7 @@ config USB_CHIPIDEA_UDC config USB_CHIPIDEA_HOST bool "ChipIdea host controller" + select USB_EHCI_ROOT_HUB_TT help Say Y here to enable host controller functionality of the ChipIdea driver. diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile index cc3493769724..5c66d9c330ca 100644 --- a/drivers/usb/chipidea/Makefile +++ b/drivers/usb/chipidea/Makefile @@ -5,10 +5,15 @@ ci_hdrc-$(CONFIG_USB_CHIPIDEA_UDC) += udc.o ci_hdrc-$(CONFIG_USB_CHIPIDEA_HOST) += host.o ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG) += debug.o +# Glue/Bridge layers go here + +obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_msm.o + +# PCI doesn't provide stubs, need to check ifneq ($(CONFIG_PCI),) obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_pci.o endif -ifneq ($(CONFIG_ARCH_MSM),) - obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_msm.o +ifneq ($(CONFIG_OF_DEVICE),) + obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_imx.o endif diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h index 50911f8490d4..d738603a2757 100644 --- a/drivers/usb/chipidea/ci.h +++ b/drivers/usb/chipidea/ci.h @@ -36,7 +36,7 @@ * @name: string description of the endpoint * @qh: queue head for this endpoint * @wedge: is the endpoint wedged - * @udc: pointer to the controller + * @ci: pointer to the controller * @lock: pointer to controller's spinlock * @td_pool: pointer to controller's TD pool */ @@ -54,7 +54,7 @@ struct ci13xxx_ep { int wedge; /* global resources */ - struct ci13xxx *udc; + struct ci13xxx *ci; spinlock_t *lock; struct dma_pool *td_pool; }; @@ -125,7 +125,7 @@ struct hw_bank { * @remote_wakeup: host-enabled remote wakeup * @suspended: suspended by host * @test_mode: the selected test mode - * @udc_driver: platform specific information supplied by parent device + * @platdata: platform specific information supplied by parent device * @vbus_active: is VBUS active * @transceiver: pointer to USB PHY, if any * @hcd: pointer to usb_hcd for ehci host driver @@ -158,8 +158,10 @@ struct ci13xxx { u8 suspended; u8 test_mode; - struct ci13xxx_udc_driver *udc_driver; + struct ci13xxx_platform_data *platdata; int vbus_active; + /* FIXME: some day, we'll not use global phy */ + bool global_phy; struct usb_phy *transceiver; struct usb_hcd *hcd; }; @@ -250,9 +252,9 @@ static inline int ffs_nr(u32 x) * * This function returns register contents */ -static inline u32 hw_read(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask) +static inline u32 hw_read(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask) { - return ioread32(udc->hw_bank.regmap[reg]) & mask; + return ioread32(ci->hw_bank.regmap[reg]) & mask; } /** @@ -261,14 +263,14 @@ static inline u32 hw_read(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask) * @mask: bitfield mask * @data: new value */ -static inline void hw_write(struct ci13xxx *udc, enum ci13xxx_regs reg, +static inline void hw_write(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask, u32 data) { if (~mask) - data = (ioread32(udc->hw_bank.regmap[reg]) & ~mask) + data = (ioread32(ci->hw_bank.regmap[reg]) & ~mask) | (data & mask); - iowrite32(data, udc->hw_bank.regmap[reg]); + iowrite32(data, ci->hw_bank.regmap[reg]); } /** @@ -278,12 +280,12 @@ static inline void hw_write(struct ci13xxx *udc, enum ci13xxx_regs reg, * * This function returns register contents */ -static inline u32 hw_test_and_clear(struct ci13xxx *udc, enum ci13xxx_regs reg, +static inline u32 hw_test_and_clear(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask) { - u32 val = ioread32(udc->hw_bank.regmap[reg]) & mask; + u32 val = ioread32(ci->hw_bank.regmap[reg]) & mask; - iowrite32(val, udc->hw_bank.regmap[reg]); + iowrite32(val, ci->hw_bank.regmap[reg]); return val; } @@ -295,12 +297,12 @@ static inline u32 hw_test_and_clear(struct ci13xxx *udc, enum ci13xxx_regs reg, * * This function returns register contents */ -static inline u32 hw_test_and_write(struct ci13xxx *udc, enum ci13xxx_regs reg, +static inline u32 hw_test_and_write(struct ci13xxx *ci, enum ci13xxx_regs reg, u32 mask, u32 data) { - u32 val = hw_read(udc, reg, ~0); + u32 val = hw_read(ci, reg, ~0); - hw_write(udc, reg, mask, data); + hw_write(ci, reg, mask, data); return (val & mask) >> ffs_nr(mask); } diff --git a/drivers/usb/chipidea/ci13xxx_imx.c b/drivers/usb/chipidea/ci13xxx_imx.c new file mode 100644 index 000000000000..ef60d06835d0 --- /dev/null +++ b/drivers/usb/chipidea/ci13xxx_imx.c @@ -0,0 +1,198 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * Copyright (C) 2012 Marek Vasut <marex@denx.de> + * on behalf of DENX Software Engineering GmbH + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/of_gpio.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/dma-mapping.h> +#include <linux/usb/chipidea.h> +#include <linux/clk.h> +#include <linux/regulator/consumer.h> + +#include "ci.h" + +#define pdev_to_phy(pdev) \ + ((struct usb_phy *)platform_get_drvdata(pdev)) + +struct ci13xxx_imx_data { + struct device_node *phy_np; + struct usb_phy *phy; + struct platform_device *ci_pdev; + struct clk *clk; + struct regulator *reg_vbus; +}; + +static struct ci13xxx_platform_data ci13xxx_imx_platdata __devinitdata = { + .name = "ci13xxx_imx", + .flags = CI13XXX_REQUIRE_TRANSCEIVER | + CI13XXX_PULLUP_ON_VBUS | + CI13XXX_DISABLE_STREAMING, + .capoffset = DEF_CAPOFFSET, +}; + +static int __devinit ci13xxx_imx_probe(struct platform_device *pdev) +{ + struct ci13xxx_imx_data *data; + struct platform_device *plat_ci, *phy_pdev; + struct device_node *phy_np; + struct resource *res; + struct regulator *reg_vbus; + int ret; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + dev_err(&pdev->dev, "Failed to allocate CI13xxx-IMX data!\n"); + return -ENOMEM; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "Can't get device resources!\n"); + return -ENOENT; + } + + data->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(data->clk)) { + dev_err(&pdev->dev, + "Failed to get clock, err=%ld\n", PTR_ERR(data->clk)); + return PTR_ERR(data->clk); + } + + ret = clk_prepare_enable(data->clk); + if (ret) { + dev_err(&pdev->dev, + "Failed to prepare or enable clock, err=%d\n", ret); + return ret; + } + + phy_np = of_parse_phandle(pdev->dev.of_node, "fsl,usbphy", 0); + if (phy_np) { + data->phy_np = phy_np; + phy_pdev = of_find_device_by_node(phy_np); + if (phy_pdev) { + struct usb_phy *phy; + phy = pdev_to_phy(phy_pdev); + if (phy && + try_module_get(phy_pdev->dev.driver->owner)) { + usb_phy_init(phy); + data->phy = phy; + } + } + } + + /* we only support host now, so enable vbus here */ + reg_vbus = devm_regulator_get(&pdev->dev, "vbus"); + if (!IS_ERR(reg_vbus)) { + ret = regulator_enable(reg_vbus); + if (ret) { + dev_err(&pdev->dev, + "Failed to enable vbus regulator, err=%d\n", + ret); + goto put_np; + } + data->reg_vbus = reg_vbus; + } else { + reg_vbus = NULL; + } + + ci13xxx_imx_platdata.phy = data->phy; + + if (!pdev->dev.dma_mask) { + pdev->dev.dma_mask = devm_kzalloc(&pdev->dev, + sizeof(*pdev->dev.dma_mask), GFP_KERNEL); + if (!pdev->dev.dma_mask) { + ret = -ENOMEM; + dev_err(&pdev->dev, "Failed to alloc dma_mask!\n"); + goto err; + } + *pdev->dev.dma_mask = DMA_BIT_MASK(32); + dma_set_coherent_mask(&pdev->dev, *pdev->dev.dma_mask); + } + plat_ci = ci13xxx_add_device(&pdev->dev, + pdev->resource, pdev->num_resources, + &ci13xxx_imx_platdata); + if (IS_ERR(plat_ci)) { + ret = PTR_ERR(plat_ci); + dev_err(&pdev->dev, + "Can't register ci_hdrc platform device, err=%d\n", + ret); + goto err; + } + + data->ci_pdev = plat_ci; + platform_set_drvdata(pdev, data); + + pm_runtime_no_callbacks(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + return 0; + +err: + if (reg_vbus) + regulator_disable(reg_vbus); +put_np: + if (phy_np) + of_node_put(phy_np); + clk_disable_unprepare(data->clk); + return ret; +} + +static int __devexit ci13xxx_imx_remove(struct platform_device *pdev) +{ + struct ci13xxx_imx_data *data = platform_get_drvdata(pdev); + + pm_runtime_disable(&pdev->dev); + ci13xxx_remove_device(data->ci_pdev); + + if (data->reg_vbus) + regulator_disable(data->reg_vbus); + + if (data->phy) { + usb_phy_shutdown(data->phy); + module_put(data->phy->dev->driver->owner); + } + + of_node_put(data->phy_np); + + clk_disable_unprepare(data->clk); + + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static const struct of_device_id ci13xxx_imx_dt_ids[] = { + { .compatible = "fsl,imx27-usb", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ci13xxx_imx_dt_ids); + +static struct platform_driver ci13xxx_imx_driver = { + .probe = ci13xxx_imx_probe, + .remove = __devexit_p(ci13xxx_imx_remove), + .driver = { + .name = "imx_usb", + .owner = THIS_MODULE, + .of_match_table = ci13xxx_imx_dt_ids, + }, +}; + +module_platform_driver(ci13xxx_imx_driver); + +MODULE_ALIAS("platform:imx-usb"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("CI13xxx i.MX USB binding"); +MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); +MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c index 958069ef95e3..b01feb3be92e 100644 --- a/drivers/usb/chipidea/ci13xxx_msm.c +++ b/drivers/usb/chipidea/ci13xxx_msm.c @@ -15,11 +15,11 @@ #include "ci.h" -#define MSM_USB_BASE (udc->hw_bank.abs) +#define MSM_USB_BASE (ci->hw_bank.abs) -static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event) +static void ci13xxx_msm_notify_event(struct ci13xxx *ci, unsigned event) { - struct device *dev = udc->gadget.dev.parent; + struct device *dev = ci->gadget.dev.parent; int val; switch (event) { @@ -34,18 +34,18 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event) * Put the transceiver in non-driving mode. Otherwise host * may not detect soft-disconnection. */ - val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL); + val = usb_phy_io_read(ci->transceiver, ULPI_FUNC_CTRL); val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL); + usb_phy_io_write(ci->transceiver, val, ULPI_FUNC_CTRL); break; default: - dev_dbg(dev, "unknown ci13xxx_udc event\n"); + dev_dbg(dev, "unknown ci13xxx event\n"); break; } } -static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = { +static struct ci13xxx_platform_data ci13xxx_msm_platdata = { .name = "ci13xxx_msm", .flags = CI13XXX_REGS_SHARED | CI13XXX_REQUIRE_TRANSCEIVER | @@ -55,56 +55,45 @@ static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = { .notify_event = ci13xxx_msm_notify_event, }; -static int ci13xxx_msm_probe(struct platform_device *pdev) +static int __devinit ci13xxx_msm_probe(struct platform_device *pdev) { struct platform_device *plat_ci; - int ret; dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n"); - plat_ci = platform_device_alloc("ci_hdrc", -1); - if (!plat_ci) { - dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n"); - return -ENOMEM; + plat_ci = ci13xxx_add_device(&pdev->dev, + pdev->resource, pdev->num_resources, + &ci13xxx_msm_platdata); + if (IS_ERR(plat_ci)) { + dev_err(&pdev->dev, "ci13xxx_add_device failed!\n"); + return PTR_ERR(plat_ci); } - ret = platform_device_add_resources(plat_ci, pdev->resource, - pdev->num_resources); - if (ret) { - dev_err(&pdev->dev, "can't add resources to platform device\n"); - goto put_platform; - } - - ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver, - sizeof(ci13xxx_msm_udc_driver)); - if (ret) - goto put_platform; - - ret = platform_device_add(plat_ci); - if (ret) - goto put_platform; + platform_set_drvdata(pdev, plat_ci); pm_runtime_no_callbacks(&pdev->dev); pm_runtime_enable(&pdev->dev); return 0; +} + +static int __devexit ci13xxx_msm_remove(struct platform_device *pdev) +{ + struct platform_device *plat_ci = platform_get_drvdata(pdev); -put_platform: - platform_device_put(plat_ci); + pm_runtime_disable(&pdev->dev); + ci13xxx_remove_device(plat_ci); - return ret; + return 0; } static struct platform_driver ci13xxx_msm_driver = { .probe = ci13xxx_msm_probe, + .remove = __devexit_p(ci13xxx_msm_remove), .driver = { .name = "msm_hsusb", }, }; -MODULE_ALIAS("platform:msm_hsusb"); -static int __init ci13xxx_msm_init(void) -{ - return platform_driver_register(&ci13xxx_msm_driver); -} -module_init(ci13xxx_msm_init); +module_platform_driver(ci13xxx_msm_driver); +MODULE_ALIAS("platform:msm_hsusb"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci13xxx_pci.c index e3dab27f5c75..918e14971f2b 100644 --- a/drivers/usb/chipidea/ci13xxx_pci.c +++ b/drivers/usb/chipidea/ci13xxx_pci.c @@ -23,17 +23,17 @@ /****************************************************************************** * PCI block *****************************************************************************/ -struct ci13xxx_udc_driver pci_driver = { +struct ci13xxx_platform_data pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = DEF_CAPOFFSET, }; -struct ci13xxx_udc_driver langwell_pci_driver = { +struct ci13xxx_platform_data langwell_pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = 0, }; -struct ci13xxx_udc_driver penwell_pci_driver = { +struct ci13xxx_platform_data penwell_pci_platdata = { .name = UDC_DRIVER_NAME, .capoffset = 0, .power_budget = 200, @@ -51,12 +51,12 @@ struct ci13xxx_udc_driver penwell_pci_driver = { static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { - struct ci13xxx_udc_driver *driver = (void *)id->driver_data; + struct ci13xxx_platform_data *platdata = (void *)id->driver_data; struct platform_device *plat_ci; struct resource res[3]; int retval = 0, nres = 2; - if (!driver) { + if (!platdata) { dev_err(&pdev->dev, "device doesn't provide driver data\n"); return -ENODEV; } @@ -75,13 +75,6 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev, pci_set_master(pdev); pci_try_set_mwi(pdev); - plat_ci = platform_device_alloc("ci_hdrc", -1); - if (!plat_ci) { - dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n"); - retval = -ENOMEM; - goto disable_device; - } - memset(res, 0, sizeof(res)); res[0].start = pci_resource_start(pdev, 0); res[0].end = pci_resource_end(pdev, 0); @@ -89,32 +82,17 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev, res[1].start = pdev->irq; res[1].flags = IORESOURCE_IRQ; - retval = platform_device_add_resources(plat_ci, res, nres); - if (retval) { - dev_err(&pdev->dev, "can't add resources to platform device\n"); - goto put_platform; + plat_ci = ci13xxx_add_device(&pdev->dev, res, nres, platdata); + if (IS_ERR(plat_ci)) { + dev_err(&pdev->dev, "ci13xxx_add_device failed!\n"); + retval = PTR_ERR(plat_ci); + goto disable_device; } - retval = platform_device_add_data(plat_ci, driver, sizeof(*driver)); - if (retval) - goto put_platform; - - dma_set_coherent_mask(&plat_ci->dev, pdev->dev.coherent_dma_mask); - plat_ci->dev.dma_mask = pdev->dev.dma_mask; - plat_ci->dev.dma_parms = pdev->dev.dma_parms; - plat_ci->dev.parent = &pdev->dev; - pci_set_drvdata(pdev, plat_ci); - retval = platform_device_add(plat_ci); - if (retval) - goto put_platform; - return 0; - put_platform: - pci_set_drvdata(pdev, NULL); - platform_device_put(plat_ci); disable_device: pci_disable_device(pdev); done: @@ -133,7 +111,7 @@ static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev) { struct platform_device *plat_ci = pci_get_drvdata(pdev); - platform_device_unregister(plat_ci); + ci13xxx_remove_device(plat_ci); pci_set_drvdata(pdev, NULL); pci_disable_device(pdev); } @@ -147,19 +125,19 @@ static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev) static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = { { PCI_DEVICE(0x153F, 0x1004), - .driver_data = (kernel_ulong_t)&pci_driver, + .driver_data = (kernel_ulong_t)&pci_platdata, }, { PCI_DEVICE(0x153F, 0x1006), - .driver_data = (kernel_ulong_t)&pci_driver, + .driver_data = (kernel_ulong_t)&pci_platdata, }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0811), - .driver_data = (kernel_ulong_t)&langwell_pci_driver, + .driver_data = (kernel_ulong_t)&langwell_pci_platdata, }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829), - .driver_data = (kernel_ulong_t)&penwell_pci_driver, + .driver_data = (kernel_ulong_t)&penwell_pci_platdata, }, { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ } }; diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 15e03b308f8a..1083585fad00 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -56,6 +56,7 @@ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/module.h> +#include <linux/idr.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/irq.h> @@ -179,7 +180,7 @@ static int hw_device_init(struct ci13xxx *ci, void __iomem *base) ci->hw_bank.abs = base; ci->hw_bank.cap = ci->hw_bank.abs; - ci->hw_bank.cap += ci->udc_driver->capoffset; + ci->hw_bank.cap += ci->platdata->capoffset; ci->hw_bank.op = ci->hw_bank.cap + ioread8(ci->hw_bank.cap); hw_alloc_regmap(ci, false); @@ -227,11 +228,11 @@ int hw_device_reset(struct ci13xxx *ci, u32 mode) udelay(10); /* not RTOS friendly */ - if (ci->udc_driver->notify_event) - ci->udc_driver->notify_event(ci, + if (ci->platdata->notify_event) + ci->platdata->notify_event(ci, CI13XXX_CONTROLLER_RESET_EVENT); - if (ci->udc_driver->flags & CI13XXX_DISABLE_STREAMING) + if (ci->platdata->flags & CI13XXX_DISABLE_STREAMING) hw_write(ci, OP_USBMODE, USBMODE_CI_SDIS, USBMODE_CI_SDIS); /* USBMODE should be configured step by step */ @@ -332,6 +333,59 @@ static irqreturn_t ci_irq(int irq, void *data) return ci->role == CI_ROLE_END ? ret : ci_role(ci)->irq(ci); } +static DEFINE_IDA(ci_ida); + +struct platform_device *ci13xxx_add_device(struct device *dev, + struct resource *res, int nres, + struct ci13xxx_platform_data *platdata) +{ + struct platform_device *pdev; + int id, ret; + + id = ida_simple_get(&ci_ida, 0, 0, GFP_KERNEL); + if (id < 0) + return ERR_PTR(id); + + pdev = platform_device_alloc("ci_hdrc", id); + if (!pdev) { + ret = -ENOMEM; + goto put_id; + } + + pdev->dev.parent = dev; + pdev->dev.dma_mask = dev->dma_mask; + pdev->dev.dma_parms = dev->dma_parms; + dma_set_coherent_mask(&pdev->dev, dev->coherent_dma_mask); + + ret = platform_device_add_resources(pdev, res, nres); + if (ret) + goto err; + + ret = platform_device_add_data(pdev, platdata, sizeof(*platdata)); + if (ret) + goto err; + + ret = platform_device_add(pdev); + if (ret) + goto err; + + return pdev; + +err: + platform_device_put(pdev); +put_id: + ida_simple_remove(&ci_ida, id); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(ci13xxx_add_device); + +void ci13xxx_remove_device(struct platform_device *pdev) +{ + platform_device_unregister(pdev); + ida_simple_remove(&ci_ida, pdev->id); +} +EXPORT_SYMBOL_GPL(ci13xxx_remove_device); + static int __devinit ci_hdrc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -364,7 +418,11 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev) } ci->dev = dev; - ci->udc_driver = dev->platform_data; + ci->platdata = dev->platform_data; + if (ci->platdata->phy) + ci->transceiver = ci->platdata->phy; + else + ci->global_phy = true; ret = hw_device_init(ci, base); if (ret < 0) { @@ -419,7 +477,7 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, ci); - ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->udc_driver->name, + ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->platdata->name, ci); if (ret) goto stop; diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c index c4b3e15532db..c6f50a257565 100644 --- a/drivers/usb/chipidea/debug.c +++ b/drivers/usb/chipidea/debug.c @@ -68,15 +68,15 @@ void dbg_interrupt(u32 intmask) * * This function returns number of registers read */ -static size_t hw_register_read(struct ci13xxx *udc, u32 *buf, size_t size) +static size_t hw_register_read(struct ci13xxx *ci, u32 *buf, size_t size) { unsigned i; - if (size > udc->hw_bank.size) - size = udc->hw_bank.size; + if (size > ci->hw_bank.size) + size = ci->hw_bank.size; for (i = 0; i < size; i++) - buf[i] = hw_read(udc, i * sizeof(u32), ~0); + buf[i] = hw_read(ci, i * sizeof(u32), ~0); return size; } @@ -88,18 +88,18 @@ static size_t hw_register_read(struct ci13xxx *udc, u32 *buf, size_t size) * * This function returns an error code */ -static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data) +static int hw_register_write(struct ci13xxx *ci, u16 addr, u32 data) { /* align */ addr /= sizeof(u32); - if (addr >= udc->hw_bank.size) + if (addr >= ci->hw_bank.size) return -EINVAL; /* align */ addr *= sizeof(u32); - hw_write(udc, addr, ~0, data); + hw_write(ci, addr, ~0, data); return 0; } @@ -110,13 +110,13 @@ static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data) * * This function returns an error code */ -static int hw_intr_clear(struct ci13xxx *udc, int n) +static int hw_intr_clear(struct ci13xxx *ci, int n) { if (n >= REG_BITS) return -EINVAL; - hw_write(udc, OP_USBINTR, BIT(n), 0); - hw_write(udc, OP_USBSTS, BIT(n), BIT(n)); + hw_write(ci, OP_USBINTR, BIT(n), 0); + hw_write(ci, OP_USBSTS, BIT(n), BIT(n)); return 0; } @@ -127,15 +127,15 @@ static int hw_intr_clear(struct ci13xxx *udc, int n) * * This function returns an error code */ -static int hw_intr_force(struct ci13xxx *udc, int n) +static int hw_intr_force(struct ci13xxx *ci, int n) { if (n >= REG_BITS) return -EINVAL; - hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE); - hw_write(udc, OP_USBINTR, BIT(n), BIT(n)); - hw_write(udc, OP_USBSTS, BIT(n), BIT(n)); - hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, 0); + hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE); + hw_write(ci, OP_USBINTR, BIT(n), BIT(n)); + hw_write(ci, OP_USBSTS, BIT(n), BIT(n)); + hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, 0); return 0; } @@ -147,12 +147,12 @@ static int hw_intr_force(struct ci13xxx *udc, int n) static ssize_t show_device(struct device *dev, struct device_attribute *attr, char *buf) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - struct usb_gadget *gadget = &udc->gadget; + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); + struct usb_gadget *gadget = &ci->gadget; int n = 0; if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "[%s] EINVAL\n", __func__); + dev_err(ci->dev, "[%s] EINVAL\n", __func__); return 0; } @@ -188,8 +188,8 @@ static DEVICE_ATTR(device, S_IRUSR, show_device, NULL); static ssize_t show_driver(struct device *dev, struct device_attribute *attr, char *buf) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); - struct usb_gadget_driver *driver = udc->driver; + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); + struct usb_gadget_driver *driver = ci->driver; int n = 0; if (attr == NULL || buf == NULL) { @@ -412,22 +412,22 @@ static DEVICE_ATTR(events, S_IRUSR | S_IWUSR, show_events, store_events); static ssize_t show_inters(struct device *dev, struct device_attribute *attr, char *buf) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); unsigned long flags; u32 intr; unsigned i, j, n = 0; if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "[%s] EINVAL\n", __func__); + dev_err(ci->dev, "[%s] EINVAL\n", __func__); return 0; } - spin_lock_irqsave(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); /*n += scnprintf(buf + n, PAGE_SIZE - n, - "status = %08x\n", hw_read_intr_status(udc)); + "status = %08x\n", hw_read_intr_status(ci)); n += scnprintf(buf + n, PAGE_SIZE - n, - "enable = %08x\n", hw_read_intr_enable(udc));*/ + "enable = %08x\n", hw_read_intr_enable(ci));*/ n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n", isr_statistics.test); @@ -471,7 +471,7 @@ static ssize_t show_inters(struct device *dev, struct device_attribute *attr, n += scnprintf(buf + n, PAGE_SIZE - n, "\n"); } - spin_unlock_irqrestore(&udc->lock, flags); + spin_unlock_irqrestore(&ci->lock, flags); return n; } @@ -485,31 +485,31 @@ static ssize_t show_inters(struct device *dev, struct device_attribute *attr, static ssize_t store_inters(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); unsigned long flags; unsigned en, bit; if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "EINVAL\n"); + dev_err(ci->dev, "EINVAL\n"); goto done; } if (sscanf(buf, "%u %u", &en, &bit) != 2 || en > 1) { - dev_err(udc->dev, "<1|0> <bit>: enable|disable interrupt\n"); + dev_err(ci->dev, "<1|0> <bit>: enable|disable interrupt\n"); goto done; } - spin_lock_irqsave(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); if (en) { - if (hw_intr_force(udc, bit)) + if (hw_intr_force(ci, bit)) dev_err(dev, "invalid bit number\n"); else isr_statistics.test++; } else { - if (hw_intr_clear(udc, bit)) + if (hw_intr_clear(ci, bit)) dev_err(dev, "invalid bit number\n"); } - spin_unlock_irqrestore(&udc->lock, flags); + spin_unlock_irqrestore(&ci->lock, flags); done: return count; @@ -524,18 +524,18 @@ static DEVICE_ATTR(inters, S_IRUSR | S_IWUSR, show_inters, store_inters); static ssize_t show_port_test(struct device *dev, struct device_attribute *attr, char *buf) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); unsigned long flags; unsigned mode; if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "EINVAL\n"); + dev_err(ci->dev, "EINVAL\n"); return 0; } - spin_lock_irqsave(&udc->lock, flags); - mode = hw_port_test_get(udc); - spin_unlock_irqrestore(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); + mode = hw_port_test_get(ci); + spin_unlock_irqrestore(&ci->lock, flags); return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode); } @@ -549,24 +549,24 @@ static ssize_t store_port_test(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); unsigned long flags; unsigned mode; if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "[%s] EINVAL\n", __func__); + dev_err(ci->dev, "[%s] EINVAL\n", __func__); goto done; } if (sscanf(buf, "%u", &mode) != 1) { - dev_err(udc->dev, "<mode>: set port test mode"); + dev_err(ci->dev, "<mode>: set port test mode"); goto done; } - spin_lock_irqsave(&udc->lock, flags); - if (hw_port_test_set(udc, mode)) - dev_err(udc->dev, "invalid mode\n"); - spin_unlock_irqrestore(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); + if (hw_port_test_set(ci, mode)) + dev_err(ci->dev, "invalid mode\n"); + spin_unlock_irqrestore(&ci->lock, flags); done: return count; @@ -582,20 +582,20 @@ static DEVICE_ATTR(port_test, S_IRUSR | S_IWUSR, static ssize_t show_qheads(struct device *dev, struct device_attribute *attr, char *buf) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); unsigned long flags; unsigned i, j, n = 0; if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "[%s] EINVAL\n", __func__); + dev_err(ci->dev, "[%s] EINVAL\n", __func__); return 0; } - spin_lock_irqsave(&udc->lock, flags); - for (i = 0; i < udc->hw_ep_max/2; i++) { - struct ci13xxx_ep *mEpRx = &udc->ci13xxx_ep[i]; + spin_lock_irqsave(&ci->lock, flags); + for (i = 0; i < ci->hw_ep_max/2; i++) { + struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i]; struct ci13xxx_ep *mEpTx = - &udc->ci13xxx_ep[i + udc->hw_ep_max/2]; + &ci->ci13xxx_ep[i + ci->hw_ep_max/2]; n += scnprintf(buf + n, PAGE_SIZE - n, "EP=%02i: RX=%08X TX=%08X\n", i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma); @@ -606,7 +606,7 @@ static ssize_t show_qheads(struct device *dev, struct device_attribute *attr, *((u32 *)mEpTx->qh.ptr + j)); } } - spin_unlock_irqrestore(&udc->lock, flags); + spin_unlock_irqrestore(&ci->lock, flags); return n; } @@ -621,25 +621,25 @@ static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL); static ssize_t show_registers(struct device *dev, struct device_attribute *attr, char *buf) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); unsigned long flags; u32 *dump; unsigned i, k, n = 0; if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "[%s] EINVAL\n", __func__); + dev_err(ci->dev, "[%s] EINVAL\n", __func__); return 0; } dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL); if (!dump) { - dev_err(udc->dev, "%s: out of memory\n", __func__); + dev_err(ci->dev, "%s: out of memory\n", __func__); return 0; } - spin_lock_irqsave(&udc->lock, flags); - k = hw_register_read(udc, dump, DUMP_ENTRIES); - spin_unlock_irqrestore(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); + k = hw_register_read(ci, dump, DUMP_ENTRIES); + spin_unlock_irqrestore(&ci->lock, flags); for (i = 0; i < k; i++) { n += scnprintf(buf + n, PAGE_SIZE - n, @@ -660,24 +660,24 @@ static ssize_t store_registers(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); unsigned long addr, data, flags; if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "[%s] EINVAL\n", __func__); + dev_err(ci->dev, "[%s] EINVAL\n", __func__); goto done; } if (sscanf(buf, "%li %li", &addr, &data) != 2) { - dev_err(udc->dev, + dev_err(ci->dev, "<addr> <data>: write data to register address\n"); goto done; } - spin_lock_irqsave(&udc->lock, flags); - if (hw_register_write(udc, addr, data)) - dev_err(udc->dev, "invalid address range\n"); - spin_unlock_irqrestore(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); + if (hw_register_write(ci, addr, data)) + dev_err(ci->dev, "invalid address range\n"); + spin_unlock_irqrestore(&ci->lock, flags); done: return count; @@ -693,34 +693,34 @@ static DEVICE_ATTR(registers, S_IRUSR | S_IWUSR, static ssize_t show_requests(struct device *dev, struct device_attribute *attr, char *buf) { - struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev); + struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev); unsigned long flags; struct list_head *ptr = NULL; struct ci13xxx_req *req = NULL; unsigned i, j, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32); if (attr == NULL || buf == NULL) { - dev_err(udc->dev, "[%s] EINVAL\n", __func__); + dev_err(ci->dev, "[%s] EINVAL\n", __func__); return 0; } - spin_lock_irqsave(&udc->lock, flags); - for (i = 0; i < udc->hw_ep_max; i++) - list_for_each(ptr, &udc->ci13xxx_ep[i].qh.queue) + spin_lock_irqsave(&ci->lock, flags); + for (i = 0; i < ci->hw_ep_max; i++) + list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue) { req = list_entry(ptr, struct ci13xxx_req, queue); n += scnprintf(buf + n, PAGE_SIZE - n, "EP=%02i: TD=%08X %s\n", - i % udc->hw_ep_max/2, (u32)req->dma, - ((i < udc->hw_ep_max/2) ? "RX" : "TX")); + i % ci->hw_ep_max/2, (u32)req->dma, + ((i < ci->hw_ep_max/2) ? "RX" : "TX")); for (j = 0; j < qSize; j++) n += scnprintf(buf + n, PAGE_SIZE - n, " %04X: %08X\n", j, *((u32 *)req->ptr + j)); } - spin_unlock_irqrestore(&udc->lock, flags); + spin_unlock_irqrestore(&ci->lock, flags); return n; } diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 9eacd21c0cd9..ebff9f4f56ec 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -116,7 +116,8 @@ static int host_start(struct ci13xxx *ci) hcd->regs = ci->hw_bank.abs; hcd->has_tt = 1; - hcd->power_budget = ci->udc_driver->power_budget; + hcd->power_budget = ci->platdata->power_budget; + hcd->phy = ci->transceiver; ehci = hcd_to_ehci(hcd); ehci->caps = ci->hw_bank.cap; diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 51f96942dc5e..c7a032a4f0c5 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -14,6 +14,7 @@ #include <linux/device.h> #include <linux/dmapool.h> #include <linux/dma-mapping.h> +#include <linux/err.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/module.h> @@ -66,11 +67,11 @@ static inline int hw_ep_bit(int num, int dir) return num + (dir ? 16 : 0); } -static inline int ep_to_bit(struct ci13xxx *udc, int n) +static inline int ep_to_bit(struct ci13xxx *ci, int n) { - int fill = 16 - udc->hw_ep_max / 2; + int fill = 16 - ci->hw_ep_max / 2; - if (n >= udc->hw_ep_max / 2) + if (n >= ci->hw_ep_max / 2) n += fill; return n; @@ -83,17 +84,17 @@ static inline int ep_to_bit(struct ci13xxx *udc, int n) * * This function returns an error code */ -static int hw_device_state(struct ci13xxx *udc, u32 dma) +static int hw_device_state(struct ci13xxx *ci, u32 dma) { if (dma) { - hw_write(udc, OP_ENDPTLISTADDR, ~0, dma); + hw_write(ci, OP_ENDPTLISTADDR, ~0, dma); /* interrupt, error, port change, reset, sleep/suspend */ - hw_write(udc, OP_USBINTR, ~0, + hw_write(ci, OP_USBINTR, ~0, USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI); - hw_write(udc, OP_USBCMD, USBCMD_RS, USBCMD_RS); + hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS); } else { - hw_write(udc, OP_USBCMD, USBCMD_RS, 0); - hw_write(udc, OP_USBINTR, ~0, 0); + hw_write(ci, OP_USBCMD, USBCMD_RS, 0); + hw_write(ci, OP_USBINTR, ~0, 0); } return 0; } @@ -105,16 +106,16 @@ static int hw_device_state(struct ci13xxx *udc, u32 dma) * * This function returns an error code */ -static int hw_ep_flush(struct ci13xxx *udc, int num, int dir) +static int hw_ep_flush(struct ci13xxx *ci, int num, int dir) { int n = hw_ep_bit(num, dir); do { /* flush any pending transfer */ - hw_write(udc, OP_ENDPTFLUSH, BIT(n), BIT(n)); - while (hw_read(udc, OP_ENDPTFLUSH, BIT(n))) + hw_write(ci, OP_ENDPTFLUSH, BIT(n), BIT(n)); + while (hw_read(ci, OP_ENDPTFLUSH, BIT(n))) cpu_relax(); - } while (hw_read(udc, OP_ENDPTSTAT, BIT(n))); + } while (hw_read(ci, OP_ENDPTSTAT, BIT(n))); return 0; } @@ -126,10 +127,10 @@ static int hw_ep_flush(struct ci13xxx *udc, int num, int dir) * * This function returns an error code */ -static int hw_ep_disable(struct ci13xxx *udc, int num, int dir) +static int hw_ep_disable(struct ci13xxx *ci, int num, int dir) { - hw_ep_flush(udc, num, dir); - hw_write(udc, OP_ENDPTCTRL + num, + hw_ep_flush(ci, num, dir); + hw_write(ci, OP_ENDPTCTRL + num, dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0); return 0; } @@ -142,7 +143,7 @@ static int hw_ep_disable(struct ci13xxx *udc, int num, int dir) * * This function returns an error code */ -static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type) +static int hw_ep_enable(struct ci13xxx *ci, int num, int dir, int type) { u32 mask, data; @@ -165,7 +166,7 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type) mask |= ENDPTCTRL_RXE; /* enable */ data |= ENDPTCTRL_RXE; } - hw_write(udc, OP_ENDPTCTRL + num, mask, data); + hw_write(ci, OP_ENDPTCTRL + num, mask, data); return 0; } @@ -176,11 +177,11 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type) * * This function returns 1 if endpoint halted */ -static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir) +static int hw_ep_get_halt(struct ci13xxx *ci, int num, int dir) { u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; - return hw_read(udc, OP_ENDPTCTRL + num, mask) ? 1 : 0; + return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0; } /** @@ -190,10 +191,10 @@ static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir) * * This function returns setup status */ -static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n) +static int hw_test_and_clear_setup_status(struct ci13xxx *ci, int n) { - n = ep_to_bit(udc, n); - return hw_test_and_clear(udc, OP_ENDPTSETUPSTAT, BIT(n)); + n = ep_to_bit(ci, n); + return hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(n)); } /** @@ -204,18 +205,18 @@ static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n) * * This function returns an error code */ -static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl) +static int hw_ep_prime(struct ci13xxx *ci, int num, int dir, int is_ctrl) { int n = hw_ep_bit(num, dir); - if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num))) + if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num))) return -EAGAIN; - hw_write(udc, OP_ENDPTPRIME, BIT(n), BIT(n)); + hw_write(ci, OP_ENDPTPRIME, BIT(n), BIT(n)); - while (hw_read(udc, OP_ENDPTPRIME, BIT(n))) + while (hw_read(ci, OP_ENDPTPRIME, BIT(n))) cpu_relax(); - if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num))) + if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num))) return -EAGAIN; /* status shoult be tested according with manual but it doesn't work */ @@ -231,7 +232,7 @@ static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl) * * This function returns an error code */ -static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value) +static int hw_ep_set_halt(struct ci13xxx *ci, int num, int dir, int value) { if (value != 0 && value != 1) return -EINVAL; @@ -242,9 +243,9 @@ static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value) u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR; /* data toggle - reserved for EP0 but it's in ESS */ - hw_write(udc, reg, mask_xs|mask_xr, + hw_write(ci, reg, mask_xs|mask_xr, value ? mask_xs : mask_xr); - } while (value != hw_ep_get_halt(udc, num, dir)); + } while (value != hw_ep_get_halt(ci, num, dir)); return 0; } @@ -254,10 +255,10 @@ static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value) * * This function returns true if high speed port */ -static int hw_port_is_high_speed(struct ci13xxx *udc) +static int hw_port_is_high_speed(struct ci13xxx *ci) { - return udc->hw_bank.lpm ? hw_read(udc, OP_DEVLC, DEVLC_PSPD) : - hw_read(udc, OP_PORTSC, PORTSC_HSP); + return ci->hw_bank.lpm ? hw_read(ci, OP_DEVLC, DEVLC_PSPD) : + hw_read(ci, OP_PORTSC, PORTSC_HSP); } /** @@ -265,9 +266,9 @@ static int hw_port_is_high_speed(struct ci13xxx *udc) * * This function returns register data */ -static u32 hw_read_intr_enable(struct ci13xxx *udc) +static u32 hw_read_intr_enable(struct ci13xxx *ci) { - return hw_read(udc, OP_USBINTR, ~0); + return hw_read(ci, OP_USBINTR, ~0); } /** @@ -275,9 +276,9 @@ static u32 hw_read_intr_enable(struct ci13xxx *udc) * * This function returns register data */ -static u32 hw_read_intr_status(struct ci13xxx *udc) +static u32 hw_read_intr_status(struct ci13xxx *ci) { - return hw_read(udc, OP_USBSTS, ~0); + return hw_read(ci, OP_USBSTS, ~0); } /** @@ -287,10 +288,10 @@ static u32 hw_read_intr_status(struct ci13xxx *udc) * * This function returns complete status */ -static int hw_test_and_clear_complete(struct ci13xxx *udc, int n) +static int hw_test_and_clear_complete(struct ci13xxx *ci, int n) { - n = ep_to_bit(udc, n); - return hw_test_and_clear(udc, OP_ENDPTCOMPLETE, BIT(n)); + n = ep_to_bit(ci, n); + return hw_test_and_clear(ci, OP_ENDPTCOMPLETE, BIT(n)); } /** @@ -299,11 +300,11 @@ static int hw_test_and_clear_complete(struct ci13xxx *udc, int n) * * This function returns active interrutps */ -static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc) +static u32 hw_test_and_clear_intr_active(struct ci13xxx *ci) { - u32 reg = hw_read_intr_status(udc) & hw_read_intr_enable(udc); + u32 reg = hw_read_intr_status(ci) & hw_read_intr_enable(ci); - hw_write(udc, OP_USBSTS, ~0, reg); + hw_write(ci, OP_USBSTS, ~0, reg); return reg; } @@ -313,9 +314,9 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc) * * This function returns guard value */ -static int hw_test_and_clear_setup_guard(struct ci13xxx *udc) +static int hw_test_and_clear_setup_guard(struct ci13xxx *ci) { - return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, 0); + return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, 0); } /** @@ -324,9 +325,9 @@ static int hw_test_and_clear_setup_guard(struct ci13xxx *udc) * * This function returns guard value */ -static int hw_test_and_set_setup_guard(struct ci13xxx *udc) +static int hw_test_and_set_setup_guard(struct ci13xxx *ci) { - return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW); + return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW); } /** @@ -336,9 +337,9 @@ static int hw_test_and_set_setup_guard(struct ci13xxx *udc) * This function explicitly sets the address, without the "USBADRA" (advance) * feature, which is not supported by older versions of the controller. */ -static void hw_usb_set_address(struct ci13xxx *udc, u8 value) +static void hw_usb_set_address(struct ci13xxx *ci, u8 value) { - hw_write(udc, OP_DEVICEADDR, DEVICEADDR_USBADR, + hw_write(ci, OP_DEVICEADDR, DEVICEADDR_USBADR, value << ffs_nr(DEVICEADDR_USBADR)); } @@ -348,21 +349,21 @@ static void hw_usb_set_address(struct ci13xxx *udc, u8 value) * * This function returns an error code */ -static int hw_usb_reset(struct ci13xxx *udc) +static int hw_usb_reset(struct ci13xxx *ci) { - hw_usb_set_address(udc, 0); + hw_usb_set_address(ci, 0); /* ESS flushes only at end?!? */ - hw_write(udc, OP_ENDPTFLUSH, ~0, ~0); + hw_write(ci, OP_ENDPTFLUSH, ~0, ~0); /* clear setup token semaphores */ - hw_write(udc, OP_ENDPTSETUPSTAT, 0, 0); + hw_write(ci, OP_ENDPTSETUPSTAT, 0, 0); /* clear complete status */ - hw_write(udc, OP_ENDPTCOMPLETE, 0, 0); + hw_write(ci, OP_ENDPTCOMPLETE, 0, 0); /* wait until all bits cleared */ - while (hw_read(udc, OP_ENDPTPRIME, ~0)) + while (hw_read(ci, OP_ENDPTPRIME, ~0)) udelay(10); /* not RTOS friendly */ /* reset all endpoints ? */ @@ -394,7 +395,7 @@ static inline u8 _usb_addr(struct ci13xxx_ep *ep) */ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) { - struct ci13xxx *udc = mEp->udc; + struct ci13xxx *ci = mEp->ci; unsigned i; int ret = 0; unsigned length = mReq->req.length; @@ -417,7 +418,7 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) if (!mReq->req.no_interrupt) mReq->zptr->token |= TD_IOC; } - ret = usb_gadget_map_request(&udc->gadget, &mReq->req, mEp->dir); + ret = usb_gadget_map_request(&ci->gadget, &mReq->req, mEp->dir); if (ret) return ret; @@ -453,13 +454,13 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) else mReqPrev->ptr->next = mReq->dma & TD_ADDR_MASK; wmb(); - if (hw_read(udc, OP_ENDPTPRIME, BIT(n))) + if (hw_read(ci, OP_ENDPTPRIME, BIT(n))) goto done; do { - hw_write(udc, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW); - tmp_stat = hw_read(udc, OP_ENDPTSTAT, BIT(n)); - } while (!hw_read(udc, OP_USBCMD, USBCMD_ATDTW)); - hw_write(udc, OP_USBCMD, USBCMD_ATDTW, 0); + hw_write(ci, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW); + tmp_stat = hw_read(ci, OP_ENDPTSTAT, BIT(n)); + } while (!hw_read(ci, OP_USBCMD, USBCMD_ATDTW)); + hw_write(ci, OP_USBCMD, USBCMD_ATDTW, 0); if (tmp_stat) goto done; } @@ -471,7 +472,7 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) wmb(); /* synchronize before ep prime */ - ret = hw_ep_prime(udc, mEp->num, mEp->dir, + ret = hw_ep_prime(ci, mEp->num, mEp->dir, mEp->type == USB_ENDPOINT_XFER_CONTROL); done: return ret; @@ -501,7 +502,7 @@ static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) mReq->req.status = 0; - usb_gadget_unmap_request(&mEp->udc->gadget, &mReq->req, mEp->dir); + usb_gadget_unmap_request(&mEp->ci->gadget, &mReq->req, mEp->dir); mReq->req.status = mReq->ptr->token & TD_STATUS; if ((TD_STATUS_HALTED & mReq->req.status) != 0) @@ -533,7 +534,7 @@ __acquires(mEp->lock) if (mEp == NULL) return -EINVAL; - hw_ep_flush(mEp->udc, mEp->num, mEp->dir); + hw_ep_flush(mEp->ci, mEp->num, mEp->dir); while (!list_empty(&mEp->qh.queue)) { @@ -562,33 +563,33 @@ __acquires(mEp->lock) static int _gadget_stop_activity(struct usb_gadget *gadget) { struct usb_ep *ep; - struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget); + struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget); unsigned long flags; - spin_lock_irqsave(&udc->lock, flags); - udc->gadget.speed = USB_SPEED_UNKNOWN; - udc->remote_wakeup = 0; - udc->suspended = 0; - spin_unlock_irqrestore(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); + ci->gadget.speed = USB_SPEED_UNKNOWN; + ci->remote_wakeup = 0; + ci->suspended = 0; + spin_unlock_irqrestore(&ci->lock, flags); /* flush all endpoints */ gadget_for_each_ep(ep, gadget) { usb_ep_fifo_flush(ep); } - usb_ep_fifo_flush(&udc->ep0out->ep); - usb_ep_fifo_flush(&udc->ep0in->ep); + usb_ep_fifo_flush(&ci->ep0out->ep); + usb_ep_fifo_flush(&ci->ep0in->ep); - if (udc->driver) - udc->driver->disconnect(gadget); + if (ci->driver) + ci->driver->disconnect(gadget); /* make sure to disable all endpoints */ gadget_for_each_ep(ep, gadget) { usb_ep_disable(ep); } - if (udc->status != NULL) { - usb_ep_free_request(&udc->ep0in->ep, udc->status); - udc->status = NULL; + if (ci->status != NULL) { + usb_ep_free_request(&ci->ep0in->ep, ci->status); + ci->status = NULL; } return 0; @@ -599,36 +600,36 @@ static int _gadget_stop_activity(struct usb_gadget *gadget) *****************************************************************************/ /** * isr_reset_handler: USB reset interrupt handler - * @udc: UDC device + * @ci: UDC device * * This function resets USB engine after a bus reset occurred */ -static void isr_reset_handler(struct ci13xxx *udc) -__releases(udc->lock) -__acquires(udc->lock) +static void isr_reset_handler(struct ci13xxx *ci) +__releases(ci->lock) +__acquires(ci->lock) { int retval; dbg_event(0xFF, "BUS RST", 0); - spin_unlock(&udc->lock); - retval = _gadget_stop_activity(&udc->gadget); + spin_unlock(&ci->lock); + retval = _gadget_stop_activity(&ci->gadget); if (retval) goto done; - retval = hw_usb_reset(udc); + retval = hw_usb_reset(ci); if (retval) goto done; - udc->status = usb_ep_alloc_request(&udc->ep0in->ep, GFP_ATOMIC); - if (udc->status == NULL) + ci->status = usb_ep_alloc_request(&ci->ep0in->ep, GFP_ATOMIC); + if (ci->status == NULL) retval = -ENOMEM; done: - spin_lock(&udc->lock); + spin_lock(&ci->lock); if (retval) - dev_err(udc->dev, "error: %i\n", retval); + dev_err(ci->dev, "error: %i\n", retval); } /** @@ -649,17 +650,17 @@ static void isr_get_status_complete(struct usb_ep *ep, struct usb_request *req) /** * isr_get_status_response: get_status request response - * @udc: udc struct + * @ci: ci struct * @setup: setup request packet * * This function returns an error code */ -static int isr_get_status_response(struct ci13xxx *udc, +static int isr_get_status_response(struct ci13xxx *ci, struct usb_ctrlrequest *setup) __releases(mEp->lock) __acquires(mEp->lock) { - struct ci13xxx_ep *mEp = udc->ep0in; + struct ci13xxx_ep *mEp = ci->ep0in; struct usb_request *req = NULL; gfp_t gfp_flags = GFP_ATOMIC; int dir, num, retval; @@ -683,14 +684,14 @@ __acquires(mEp->lock) if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) { /* Assume that device is bus powered for now. */ - *(u16 *)req->buf = udc->remote_wakeup << 1; + *(u16 *)req->buf = ci->remote_wakeup << 1; retval = 0; } else if ((setup->bRequestType & USB_RECIP_MASK) \ == USB_RECIP_ENDPOINT) { dir = (le16_to_cpu(setup->wIndex) & USB_ENDPOINT_DIR_MASK) ? TX : RX; num = le16_to_cpu(setup->wIndex) & USB_ENDPOINT_NUMBER_MASK; - *(u16 *)req->buf = hw_ep_get_halt(udc, num, dir); + *(u16 *)req->buf = hw_ep_get_halt(ci, num, dir); } /* else do nothing; reserved for future use */ @@ -722,39 +723,39 @@ __acquires(mEp->lock) static void isr_setup_status_complete(struct usb_ep *ep, struct usb_request *req) { - struct ci13xxx *udc = req->context; + struct ci13xxx *ci = req->context; unsigned long flags; - if (udc->setaddr) { - hw_usb_set_address(udc, udc->address); - udc->setaddr = false; + if (ci->setaddr) { + hw_usb_set_address(ci, ci->address); + ci->setaddr = false; } - spin_lock_irqsave(&udc->lock, flags); - if (udc->test_mode) - hw_port_test_set(udc, udc->test_mode); - spin_unlock_irqrestore(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); + if (ci->test_mode) + hw_port_test_set(ci, ci->test_mode); + spin_unlock_irqrestore(&ci->lock, flags); } /** * isr_setup_status_phase: queues the status phase of a setup transation - * @udc: udc struct + * @ci: ci struct * * This function returns an error code */ -static int isr_setup_status_phase(struct ci13xxx *udc) +static int isr_setup_status_phase(struct ci13xxx *ci) __releases(mEp->lock) __acquires(mEp->lock) { int retval; struct ci13xxx_ep *mEp; - mEp = (udc->ep0_dir == TX) ? udc->ep0out : udc->ep0in; - udc->status->context = udc; - udc->status->complete = isr_setup_status_complete; + mEp = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in; + ci->status->context = ci; + ci->status->complete = isr_setup_status_complete; spin_unlock(mEp->lock); - retval = usb_ep_queue(&mEp->ep, udc->status, GFP_ATOMIC); + retval = usb_ep_queue(&mEp->ep, ci->status, GFP_ATOMIC); spin_lock(mEp->lock); return retval; @@ -789,7 +790,7 @@ __acquires(mEp->lock) spin_unlock(mEp->lock); if ((mEp->type == USB_ENDPOINT_XFER_CONTROL) && mReq->req.length) - mEpTemp = mEp->udc->ep0in; + mEpTemp = mEp->ci->ep0in; mReq->req.complete(&mEpTemp->ep, &mReq->req); spin_lock(mEp->lock); } @@ -805,48 +806,48 @@ __acquires(mEp->lock) /** * isr_tr_complete_handler: transaction complete interrupt handler - * @udc: UDC descriptor + * @ci: UDC descriptor * * This function handles traffic events */ -static void isr_tr_complete_handler(struct ci13xxx *udc) -__releases(udc->lock) -__acquires(udc->lock) +static void isr_tr_complete_handler(struct ci13xxx *ci) +__releases(ci->lock) +__acquires(ci->lock) { unsigned i; u8 tmode = 0; - for (i = 0; i < udc->hw_ep_max; i++) { - struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i]; + for (i = 0; i < ci->hw_ep_max; i++) { + struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[i]; int type, num, dir, err = -EINVAL; struct usb_ctrlrequest req; if (mEp->ep.desc == NULL) continue; /* not configured */ - if (hw_test_and_clear_complete(udc, i)) { + if (hw_test_and_clear_complete(ci, i)) { err = isr_tr_complete_low(mEp); if (mEp->type == USB_ENDPOINT_XFER_CONTROL) { if (err > 0) /* needs status phase */ - err = isr_setup_status_phase(udc); + err = isr_setup_status_phase(ci); if (err < 0) { dbg_event(_usb_addr(mEp), "ERROR", err); - spin_unlock(&udc->lock); + spin_unlock(&ci->lock); if (usb_ep_set_halt(&mEp->ep)) - dev_err(udc->dev, + dev_err(ci->dev, "error: ep_set_halt\n"); - spin_lock(&udc->lock); + spin_lock(&ci->lock); } } } if (mEp->type != USB_ENDPOINT_XFER_CONTROL || - !hw_test_and_clear_setup_status(udc, i)) + !hw_test_and_clear_setup_status(ci, i)) continue; if (i != 0) { - dev_warn(udc->dev, "ctrl traffic at endpoint %d\n", i); + dev_warn(ci->dev, "ctrl traffic at endpoint %d\n", i); continue; } @@ -854,18 +855,18 @@ __acquires(udc->lock) * Flush data and handshake transactions of previous * setup packet. */ - _ep_nuke(udc->ep0out); - _ep_nuke(udc->ep0in); + _ep_nuke(ci->ep0out); + _ep_nuke(ci->ep0in); /* read_setup_packet */ do { - hw_test_and_set_setup_guard(udc); + hw_test_and_set_setup_guard(ci); memcpy(&req, &mEp->qh.ptr->setup, sizeof(req)); - } while (!hw_test_and_clear_setup_guard(udc)); + } while (!hw_test_and_clear_setup_guard(ci)); type = req.bRequestType; - udc->ep0_dir = (type & USB_DIR_IN) ? TX : RX; + ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX; dbg_setup(_usb_addr(mEp), &req); @@ -880,23 +881,23 @@ __acquires(udc->lock) dir = num & USB_ENDPOINT_DIR_MASK; num &= USB_ENDPOINT_NUMBER_MASK; if (dir) /* TX */ - num += udc->hw_ep_max/2; - if (!udc->ci13xxx_ep[num].wedge) { - spin_unlock(&udc->lock); + num += ci->hw_ep_max/2; + if (!ci->ci13xxx_ep[num].wedge) { + spin_unlock(&ci->lock); err = usb_ep_clear_halt( - &udc->ci13xxx_ep[num].ep); - spin_lock(&udc->lock); + &ci->ci13xxx_ep[num].ep); + spin_lock(&ci->lock); if (err) break; } - err = isr_setup_status_phase(udc); + err = isr_setup_status_phase(ci); } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) && le16_to_cpu(req.wValue) == USB_DEVICE_REMOTE_WAKEUP) { if (req.wLength != 0) break; - udc->remote_wakeup = 0; - err = isr_setup_status_phase(udc); + ci->remote_wakeup = 0; + err = isr_setup_status_phase(ci); } else { goto delegate; } @@ -909,7 +910,7 @@ __acquires(udc->lock) if (le16_to_cpu(req.wLength) != 2 || le16_to_cpu(req.wValue) != 0) break; - err = isr_get_status_response(udc, &req); + err = isr_get_status_response(ci, &req); break; case USB_REQ_SET_ADDRESS: if (type != (USB_DIR_OUT|USB_RECIP_DEVICE)) @@ -917,9 +918,9 @@ __acquires(udc->lock) if (le16_to_cpu(req.wLength) != 0 || le16_to_cpu(req.wIndex) != 0) break; - udc->address = (u8)le16_to_cpu(req.wValue); - udc->setaddr = true; - err = isr_setup_status_phase(udc); + ci->address = (u8)le16_to_cpu(req.wValue); + ci->setaddr = true; + err = isr_setup_status_phase(ci); break; case USB_REQ_SET_FEATURE: if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) && @@ -931,20 +932,20 @@ __acquires(udc->lock) dir = num & USB_ENDPOINT_DIR_MASK; num &= USB_ENDPOINT_NUMBER_MASK; if (dir) /* TX */ - num += udc->hw_ep_max/2; + num += ci->hw_ep_max/2; - spin_unlock(&udc->lock); - err = usb_ep_set_halt(&udc->ci13xxx_ep[num].ep); - spin_lock(&udc->lock); + spin_unlock(&ci->lock); + err = usb_ep_set_halt(&ci->ci13xxx_ep[num].ep); + spin_lock(&ci->lock); if (!err) - isr_setup_status_phase(udc); + isr_setup_status_phase(ci); } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) { if (req.wLength != 0) break; switch (le16_to_cpu(req.wValue)) { case USB_DEVICE_REMOTE_WAKEUP: - udc->remote_wakeup = 1; - err = isr_setup_status_phase(udc); + ci->remote_wakeup = 1; + err = isr_setup_status_phase(ci); break; case USB_DEVICE_TEST_MODE: tmode = le16_to_cpu(req.wIndex) >> 8; @@ -954,9 +955,9 @@ __acquires(udc->lock) case TEST_SE0_NAK: case TEST_PACKET: case TEST_FORCE_EN: - udc->test_mode = tmode; + ci->test_mode = tmode; err = isr_setup_status_phase( - udc); + ci); break; default: break; @@ -971,21 +972,21 @@ __acquires(udc->lock) default: delegate: if (req.wLength == 0) /* no data phase */ - udc->ep0_dir = TX; + ci->ep0_dir = TX; - spin_unlock(&udc->lock); - err = udc->driver->setup(&udc->gadget, &req); - spin_lock(&udc->lock); + spin_unlock(&ci->lock); + err = ci->driver->setup(&ci->gadget, &req); + spin_lock(&ci->lock); break; } if (err < 0) { dbg_event(_usb_addr(mEp), "ERROR", err); - spin_unlock(&udc->lock); + spin_unlock(&ci->lock); if (usb_ep_set_halt(&mEp->ep)) - dev_err(udc->dev, "error: ep_set_halt\n"); - spin_lock(&udc->lock); + dev_err(ci->dev, "error: ep_set_halt\n"); + spin_lock(&ci->lock); } } } @@ -1015,7 +1016,7 @@ static int ep_enable(struct usb_ep *ep, mEp->ep.desc = desc; if (!list_empty(&mEp->qh.queue)) - dev_warn(mEp->udc->dev, "enabling a non-empty endpoint!\n"); + dev_warn(mEp->ci->dev, "enabling a non-empty endpoint!\n"); mEp->dir = usb_endpoint_dir_in(desc) ? TX : RX; mEp->num = usb_endpoint_num(desc); @@ -1043,7 +1044,7 @@ static int ep_enable(struct usb_ep *ep, * is always enabled */ if (mEp->num) - retval |= hw_ep_enable(mEp->udc, mEp->num, mEp->dir, mEp->type); + retval |= hw_ep_enable(mEp->ci, mEp->num, mEp->dir, mEp->type); spin_unlock_irqrestore(mEp->lock, flags); return retval; @@ -1074,7 +1075,7 @@ static int ep_disable(struct usb_ep *ep) dbg_event(_usb_addr(mEp), "DISABLE", 0); retval |= _ep_nuke(mEp); - retval |= hw_ep_disable(mEp->udc, mEp->num, mEp->dir); + retval |= hw_ep_disable(mEp->ci, mEp->num, mEp->dir); if (mEp->type == USB_ENDPOINT_XFER_CONTROL) mEp->dir = (mEp->dir == TX) ? RX : TX; @@ -1131,7 +1132,7 @@ static void ep_free_request(struct usb_ep *ep, struct usb_request *req) if (ep == NULL || req == NULL) { return; } else if (!list_empty(&mReq->queue)) { - dev_err(mEp->udc->dev, "freeing queued request\n"); + dev_err(mEp->ci->dev, "freeing queued request\n"); return; } @@ -1156,7 +1157,7 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req, { struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req); - struct ci13xxx *udc = mEp->udc; + struct ci13xxx *ci = mEp->ci; int retval = 0; unsigned long flags; @@ -1167,12 +1168,12 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req, if (mEp->type == USB_ENDPOINT_XFER_CONTROL) { if (req->length) - mEp = (udc->ep0_dir == RX) ? - udc->ep0out : udc->ep0in; + mEp = (ci->ep0_dir == RX) ? + ci->ep0out : ci->ep0in; if (!list_empty(&mEp->qh.queue)) { _ep_nuke(mEp); retval = -EOVERFLOW; - dev_warn(mEp->udc->dev, "endpoint ctrl %X nuked\n", + dev_warn(mEp->ci->dev, "endpoint ctrl %X nuked\n", _usb_addr(mEp)); } } @@ -1180,14 +1181,14 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req, /* first nuke then test link, e.g. previous status has not sent */ if (!list_empty(&mReq->queue)) { retval = -EBUSY; - dev_err(mEp->udc->dev, "request already in queue\n"); + dev_err(mEp->ci->dev, "request already in queue\n"); goto done; } if (req->length > 4 * CI13XXX_PAGE_SIZE) { req->length = 4 * CI13XXX_PAGE_SIZE; retval = -EMSGSIZE; - dev_warn(mEp->udc->dev, "request length truncated\n"); + dev_warn(mEp->ci->dev, "request length truncated\n"); } dbg_queue(_usb_addr(mEp), req, retval); @@ -1230,12 +1231,12 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req) dbg_event(_usb_addr(mEp), "DEQUEUE", 0); - hw_ep_flush(mEp->udc, mEp->num, mEp->dir); + hw_ep_flush(mEp->ci, mEp->num, mEp->dir); /* pop request */ list_del_init(&mReq->queue); - usb_gadget_unmap_request(&mEp->udc->gadget, req, mEp->dir); + usb_gadget_unmap_request(&mEp->ci->gadget, req, mEp->dir); req->status = -ECONNRESET; @@ -1277,7 +1278,7 @@ static int ep_set_halt(struct usb_ep *ep, int value) direction = mEp->dir; do { dbg_event(_usb_addr(mEp), "HALT", value); - retval |= hw_ep_set_halt(mEp->udc, mEp->num, mEp->dir, value); + retval |= hw_ep_set_halt(mEp->ci, mEp->num, mEp->dir, value); if (!value) mEp->wedge = 0; @@ -1325,14 +1326,14 @@ static void ep_fifo_flush(struct usb_ep *ep) unsigned long flags; if (ep == NULL) { - dev_err(mEp->udc->dev, "%02X: -EINVAL\n", _usb_addr(mEp)); + dev_err(mEp->ci->dev, "%02X: -EINVAL\n", _usb_addr(mEp)); return; } spin_lock_irqsave(mEp->lock, flags); dbg_event(_usb_addr(mEp), "FFLUSH", 0); - hw_ep_flush(mEp->udc, mEp->num, mEp->dir); + hw_ep_flush(mEp->ci, mEp->num, mEp->dir); spin_unlock_irqrestore(mEp->lock, flags); } @@ -1358,30 +1359,30 @@ static const struct usb_ep_ops usb_ep_ops = { *****************************************************************************/ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) { - struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget); + struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget); unsigned long flags; int gadget_ready = 0; - if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS)) + if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS)) return -EOPNOTSUPP; - spin_lock_irqsave(&udc->lock, flags); - udc->vbus_active = is_active; - if (udc->driver) + spin_lock_irqsave(&ci->lock, flags); + ci->vbus_active = is_active; + if (ci->driver) gadget_ready = 1; - spin_unlock_irqrestore(&udc->lock, flags); + spin_unlock_irqrestore(&ci->lock, flags); if (gadget_ready) { if (is_active) { pm_runtime_get_sync(&_gadget->dev); - hw_device_reset(udc, USBMODE_CM_DC); - hw_device_state(udc, udc->ep0out->qh.dma); + hw_device_reset(ci, USBMODE_CM_DC); + hw_device_state(ci, ci->ep0out->qh.dma); } else { - hw_device_state(udc, 0); - if (udc->udc_driver->notify_event) - udc->udc_driver->notify_event(udc, + hw_device_state(ci, 0); + if (ci->platdata->notify_event) + ci->platdata->notify_event(ci, CI13XXX_CONTROLLER_STOPPED_EVENT); - _gadget_stop_activity(&udc->gadget); + _gadget_stop_activity(&ci->gadget); pm_runtime_put_sync(&_gadget->dev); } } @@ -1391,31 +1392,31 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) static int ci13xxx_wakeup(struct usb_gadget *_gadget) { - struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget); + struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget); unsigned long flags; int ret = 0; - spin_lock_irqsave(&udc->lock, flags); - if (!udc->remote_wakeup) { + spin_lock_irqsave(&ci->lock, flags); + if (!ci->remote_wakeup) { ret = -EOPNOTSUPP; goto out; } - if (!hw_read(udc, OP_PORTSC, PORTSC_SUSP)) { + if (!hw_read(ci, OP_PORTSC, PORTSC_SUSP)) { ret = -EINVAL; goto out; } - hw_write(udc, OP_PORTSC, PORTSC_FPR, PORTSC_FPR); + hw_write(ci, OP_PORTSC, PORTSC_FPR, PORTSC_FPR); out: - spin_unlock_irqrestore(&udc->lock, flags); + spin_unlock_irqrestore(&ci->lock, flags); return ret; } static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA) { - struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget); + struct ci13xxx *ci = container_of(_gadget, struct ci13xxx, gadget); - if (udc->transceiver) - return usb_phy_set_power(udc->transceiver, mA); + if (ci->transceiver) + return usb_phy_set_power(ci->transceiver, mA); return -ENOTSUPP; } @@ -1436,28 +1437,28 @@ static const struct usb_gadget_ops usb_gadget_ops = { .udc_stop = ci13xxx_stop, }; -static int init_eps(struct ci13xxx *udc) +static int init_eps(struct ci13xxx *ci) { int retval = 0, i, j; - for (i = 0; i < udc->hw_ep_max/2; i++) + for (i = 0; i < ci->hw_ep_max/2; i++) for (j = RX; j <= TX; j++) { - int k = i + j * udc->hw_ep_max/2; - struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[k]; + int k = i + j * ci->hw_ep_max/2; + struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[k]; scnprintf(mEp->name, sizeof(mEp->name), "ep%i%s", i, (j == TX) ? "in" : "out"); - mEp->udc = udc; - mEp->lock = &udc->lock; - mEp->td_pool = udc->td_pool; + mEp->ci = ci; + mEp->lock = &ci->lock; + mEp->td_pool = ci->td_pool; mEp->ep.name = mEp->name; mEp->ep.ops = &usb_ep_ops; mEp->ep.maxpacket = CTRL_PAYLOAD_MAX; INIT_LIST_HEAD(&mEp->qh.queue); - mEp->qh.ptr = dma_pool_alloc(udc->qh_pool, GFP_KERNEL, + mEp->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL, &mEp->qh.dma); if (mEp->qh.ptr == NULL) retval = -ENOMEM; @@ -1470,14 +1471,14 @@ static int init_eps(struct ci13xxx *udc) */ if (i == 0) { if (j == RX) - udc->ep0out = mEp; + ci->ep0out = mEp; else - udc->ep0in = mEp; + ci->ep0in = mEp; continue; } - list_add_tail(&mEp->ep.ep_list, &udc->gadget.ep_list); + list_add_tail(&mEp->ep.ep_list, &ci->gadget.ep_list); } return retval; @@ -1493,7 +1494,7 @@ static int init_eps(struct ci13xxx *udc) static int ci13xxx_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { - struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget); + struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget); unsigned long flags; int retval = -ENOMEM; @@ -1501,35 +1502,35 @@ static int ci13xxx_start(struct usb_gadget *gadget, return -EINVAL; - udc->ep0out->ep.desc = &ctrl_endpt_out_desc; - retval = usb_ep_enable(&udc->ep0out->ep); + ci->ep0out->ep.desc = &ctrl_endpt_out_desc; + retval = usb_ep_enable(&ci->ep0out->ep); if (retval) return retval; - udc->ep0in->ep.desc = &ctrl_endpt_in_desc; - retval = usb_ep_enable(&udc->ep0in->ep); + ci->ep0in->ep.desc = &ctrl_endpt_in_desc; + retval = usb_ep_enable(&ci->ep0in->ep); if (retval) return retval; - spin_lock_irqsave(&udc->lock, flags); - - udc->driver = driver; - pm_runtime_get_sync(&udc->gadget.dev); - if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) { - if (udc->vbus_active) { - if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) - hw_device_reset(udc, USBMODE_CM_DC); + spin_lock_irqsave(&ci->lock, flags); + + ci->driver = driver; + pm_runtime_get_sync(&ci->gadget.dev); + if (ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) { + if (ci->vbus_active) { + if (ci->platdata->flags & CI13XXX_REGS_SHARED) + hw_device_reset(ci, USBMODE_CM_DC); } else { - pm_runtime_put_sync(&udc->gadget.dev); + pm_runtime_put_sync(&ci->gadget.dev); goto done; } } - retval = hw_device_state(udc, udc->ep0out->qh.dma); + retval = hw_device_state(ci, ci->ep0out->qh.dma); if (retval) - pm_runtime_put_sync(&udc->gadget.dev); + pm_runtime_put_sync(&ci->gadget.dev); done: - spin_unlock_irqrestore(&udc->lock, flags); + spin_unlock_irqrestore(&ci->lock, flags); return retval; } @@ -1539,25 +1540,25 @@ static int ci13xxx_start(struct usb_gadget *gadget, static int ci13xxx_stop(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { - struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget); + struct ci13xxx *ci = container_of(gadget, struct ci13xxx, gadget); unsigned long flags; - spin_lock_irqsave(&udc->lock, flags); + spin_lock_irqsave(&ci->lock, flags); - if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) || - udc->vbus_active) { - hw_device_state(udc, 0); - if (udc->udc_driver->notify_event) - udc->udc_driver->notify_event(udc, + if (!(ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) || + ci->vbus_active) { + hw_device_state(ci, 0); + if (ci->platdata->notify_event) + ci->platdata->notify_event(ci, CI13XXX_CONTROLLER_STOPPED_EVENT); - udc->driver = NULL; - spin_unlock_irqrestore(&udc->lock, flags); - _gadget_stop_activity(&udc->gadget); - spin_lock_irqsave(&udc->lock, flags); - pm_runtime_put(&udc->gadget.dev); + ci->driver = NULL; + spin_unlock_irqrestore(&ci->lock, flags); + _gadget_stop_activity(&ci->gadget); + spin_lock_irqsave(&ci->lock, flags); + pm_runtime_put(&ci->gadget.dev); } - spin_unlock_irqrestore(&udc->lock, flags); + spin_unlock_irqrestore(&ci->lock, flags); return 0; } @@ -1566,64 +1567,64 @@ static int ci13xxx_stop(struct usb_gadget *gadget, * BUS block *****************************************************************************/ /** - * udc_irq: udc interrupt handler + * udc_irq: ci interrupt handler * * This function returns IRQ_HANDLED if the IRQ has been handled * It locks access to registers */ -static irqreturn_t udc_irq(struct ci13xxx *udc) +static irqreturn_t udc_irq(struct ci13xxx *ci) { irqreturn_t retval; u32 intr; - if (udc == NULL) + if (ci == NULL) return IRQ_HANDLED; - spin_lock(&udc->lock); + spin_lock(&ci->lock); - if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) { - if (hw_read(udc, OP_USBMODE, USBMODE_CM) != + if (ci->platdata->flags & CI13XXX_REGS_SHARED) { + if (hw_read(ci, OP_USBMODE, USBMODE_CM) != USBMODE_CM_DC) { - spin_unlock(&udc->lock); + spin_unlock(&ci->lock); return IRQ_NONE; } } - intr = hw_test_and_clear_intr_active(udc); + intr = hw_test_and_clear_intr_active(ci); dbg_interrupt(intr); if (intr) { /* order defines priority - do NOT change it */ if (USBi_URI & intr) - isr_reset_handler(udc); + isr_reset_handler(ci); if (USBi_PCI & intr) { - udc->gadget.speed = hw_port_is_high_speed(udc) ? + ci->gadget.speed = hw_port_is_high_speed(ci) ? USB_SPEED_HIGH : USB_SPEED_FULL; - if (udc->suspended && udc->driver->resume) { - spin_unlock(&udc->lock); - udc->driver->resume(&udc->gadget); - spin_lock(&udc->lock); - udc->suspended = 0; + if (ci->suspended && ci->driver->resume) { + spin_unlock(&ci->lock); + ci->driver->resume(&ci->gadget); + spin_lock(&ci->lock); + ci->suspended = 0; } } if (USBi_UI & intr) - isr_tr_complete_handler(udc); + isr_tr_complete_handler(ci); if (USBi_SLI & intr) { - if (udc->gadget.speed != USB_SPEED_UNKNOWN && - udc->driver->suspend) { - udc->suspended = 1; - spin_unlock(&udc->lock); - udc->driver->suspend(&udc->gadget); - spin_lock(&udc->lock); + if (ci->gadget.speed != USB_SPEED_UNKNOWN && + ci->driver->suspend) { + ci->suspended = 1; + spin_unlock(&ci->lock); + ci->driver->suspend(&ci->gadget); + spin_lock(&ci->lock); } } retval = IRQ_HANDLED; } else { retval = IRQ_NONE; } - spin_unlock(&udc->lock); + spin_unlock(&ci->lock); return retval; } @@ -1640,112 +1641,111 @@ static void udc_release(struct device *dev) /** * udc_start: initialize gadget role - * @udc: chipidea controller + * @ci: chipidea controller */ -static int udc_start(struct ci13xxx *udc) +static int udc_start(struct ci13xxx *ci) { - struct device *dev = udc->dev; + struct device *dev = ci->dev; int retval = 0; - if (!udc) - return -EINVAL; - - spin_lock_init(&udc->lock); + spin_lock_init(&ci->lock); - udc->gadget.ops = &usb_gadget_ops; - udc->gadget.speed = USB_SPEED_UNKNOWN; - udc->gadget.max_speed = USB_SPEED_HIGH; - udc->gadget.is_otg = 0; - udc->gadget.name = udc->udc_driver->name; + ci->gadget.ops = &usb_gadget_ops; + ci->gadget.speed = USB_SPEED_UNKNOWN; + ci->gadget.max_speed = USB_SPEED_HIGH; + ci->gadget.is_otg = 0; + ci->gadget.name = ci->platdata->name; - INIT_LIST_HEAD(&udc->gadget.ep_list); + INIT_LIST_HEAD(&ci->gadget.ep_list); - dev_set_name(&udc->gadget.dev, "gadget"); - udc->gadget.dev.dma_mask = dev->dma_mask; - udc->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask; - udc->gadget.dev.parent = dev; - udc->gadget.dev.release = udc_release; + dev_set_name(&ci->gadget.dev, "gadget"); + ci->gadget.dev.dma_mask = dev->dma_mask; + ci->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask; + ci->gadget.dev.parent = dev; + ci->gadget.dev.release = udc_release; /* alloc resources */ - udc->qh_pool = dma_pool_create("ci13xxx_qh", dev, + ci->qh_pool = dma_pool_create("ci13xxx_qh", dev, sizeof(struct ci13xxx_qh), 64, CI13XXX_PAGE_SIZE); - if (udc->qh_pool == NULL) + if (ci->qh_pool == NULL) return -ENOMEM; - udc->td_pool = dma_pool_create("ci13xxx_td", dev, + ci->td_pool = dma_pool_create("ci13xxx_td", dev, sizeof(struct ci13xxx_td), 64, CI13XXX_PAGE_SIZE); - if (udc->td_pool == NULL) { + if (ci->td_pool == NULL) { retval = -ENOMEM; goto free_qh_pool; } - retval = init_eps(udc); + retval = init_eps(ci); if (retval) goto free_pools; - udc->gadget.ep0 = &udc->ep0in->ep; + ci->gadget.ep0 = &ci->ep0in->ep; - udc->transceiver = usb_get_transceiver(); + if (ci->global_phy) + ci->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); - if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) { - if (udc->transceiver == NULL) { + if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) { + if (ci->transceiver == NULL) { retval = -ENODEV; goto free_pools; } } - if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) { - retval = hw_device_reset(udc, USBMODE_CM_DC); + if (!(ci->platdata->flags & CI13XXX_REGS_SHARED)) { + retval = hw_device_reset(ci, USBMODE_CM_DC); if (retval) goto put_transceiver; } - retval = device_register(&udc->gadget.dev); + retval = device_register(&ci->gadget.dev); if (retval) { - put_device(&udc->gadget.dev); + put_device(&ci->gadget.dev); goto put_transceiver; } - retval = dbg_create_files(&udc->gadget.dev); + retval = dbg_create_files(&ci->gadget.dev); if (retval) goto unreg_device; - if (udc->transceiver) { - retval = otg_set_peripheral(udc->transceiver->otg, - &udc->gadget); + if (!IS_ERR_OR_NULL(ci->transceiver)) { + retval = otg_set_peripheral(ci->transceiver->otg, + &ci->gadget); if (retval) goto remove_dbg; } - retval = usb_add_gadget_udc(dev, &udc->gadget); + retval = usb_add_gadget_udc(dev, &ci->gadget); if (retval) goto remove_trans; - pm_runtime_no_callbacks(&udc->gadget.dev); - pm_runtime_enable(&udc->gadget.dev); + pm_runtime_no_callbacks(&ci->gadget.dev); + pm_runtime_enable(&ci->gadget.dev); return retval; remove_trans: - if (udc->transceiver) { - otg_set_peripheral(udc->transceiver->otg, &udc->gadget); - usb_put_transceiver(udc->transceiver); + if (!IS_ERR_OR_NULL(ci->transceiver)) { + otg_set_peripheral(ci->transceiver->otg, &ci->gadget); + if (ci->global_phy) + usb_put_phy(ci->transceiver); } dev_err(dev, "error = %i\n", retval); remove_dbg: - dbg_remove_files(&udc->gadget.dev); + dbg_remove_files(&ci->gadget.dev); unreg_device: - device_unregister(&udc->gadget.dev); + device_unregister(&ci->gadget.dev); put_transceiver: - if (udc->transceiver) - usb_put_transceiver(udc->transceiver); + if (!IS_ERR_OR_NULL(ci->transceiver) && ci->global_phy) + usb_put_phy(ci->transceiver); free_pools: - dma_pool_destroy(udc->td_pool); + dma_pool_destroy(ci->td_pool); free_qh_pool: - dma_pool_destroy(udc->qh_pool); + dma_pool_destroy(ci->qh_pool); return retval; } @@ -1754,32 +1754,33 @@ free_qh_pool: * * No interrupts active, the IRQ has been released */ -static void udc_stop(struct ci13xxx *udc) +static void udc_stop(struct ci13xxx *ci) { int i; - if (udc == NULL) + if (ci == NULL) return; - usb_del_gadget_udc(&udc->gadget); + usb_del_gadget_udc(&ci->gadget); - for (i = 0; i < udc->hw_ep_max; i++) { - struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i]; + for (i = 0; i < ci->hw_ep_max; i++) { + struct ci13xxx_ep *mEp = &ci->ci13xxx_ep[i]; - dma_pool_free(udc->qh_pool, mEp->qh.ptr, mEp->qh.dma); + dma_pool_free(ci->qh_pool, mEp->qh.ptr, mEp->qh.dma); } - dma_pool_destroy(udc->td_pool); - dma_pool_destroy(udc->qh_pool); + dma_pool_destroy(ci->td_pool); + dma_pool_destroy(ci->qh_pool); - if (udc->transceiver) { - otg_set_peripheral(udc->transceiver->otg, NULL); - usb_put_transceiver(udc->transceiver); + if (!IS_ERR_OR_NULL(ci->transceiver)) { + otg_set_peripheral(ci->transceiver->otg, NULL); + if (ci->global_phy) + usb_put_phy(ci->transceiver); } - dbg_remove_files(&udc->gadget.dev); - device_unregister(&udc->gadget.dev); + dbg_remove_files(&ci->gadget.dev); + device_unregister(&ci->gadget.dev); /* my kobject is dynamic, I swear! */ - memset(&udc->gadget, 0, sizeof(udc->gadget)); + memset(&ci->gadget, 0, sizeof(ci->gadget)); } /** diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 36a2a0b7b82c..56d6bf668488 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -996,7 +996,7 @@ static int acm_probe(struct usb_interface *intf, case USB_CDC_CALL_MANAGEMENT_TYPE: call_management_function = buffer[3]; call_interface_num = buffer[4]; - if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3) + if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3) dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n"); break; default: diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index ee469274a3fe..65a55abb791f 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -32,8 +32,6 @@ #define DRIVER_AUTHOR "Oliver Neukum" #define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management" -#define HUAWEI_VENDOR_ID 0x12D1 - static const struct usb_device_id wdm_ids[] = { { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS | @@ -41,29 +39,6 @@ static const struct usb_device_id wdm_ids[] = { .bInterfaceClass = USB_CLASS_COMM, .bInterfaceSubClass = USB_CDC_SUBCLASS_DMM }, - { - /* - * Huawei E392, E398 and possibly other Qualcomm based modems - * embed the Qualcomm QMI protocol inside CDC on CDC ECM like - * control interfaces. Userspace access to this is required - * to configure the accompanying data interface - */ - .match_flags = USB_DEVICE_ID_MATCH_VENDOR | - USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = HUAWEI_VENDOR_ID, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 9, /* NOTE: CDC ECM control interface! */ - }, - { - /* Vodafone/Huawei K5005 (12d1:14c8) and similar modems */ - .match_flags = USB_DEVICE_ID_MATCH_VENDOR | - USB_DEVICE_ID_MATCH_INT_INFO, - .idVendor = HUAWEI_VENDOR_ID, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 1, - .bInterfaceProtocol = 57, /* NOTE: CDC ECM control interface! */ - }, { } }; diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index e0f107948eba..ebb8a9de8b5f 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -47,6 +47,7 @@ #include <linux/notifier.h> #include <linux/security.h> #include <linux/user_namespace.h> +#include <linux/scatterlist.h> #include <asm/uaccess.h> #include <asm/byteorder.h> #include <linux/moduleparam.h> @@ -55,6 +56,7 @@ #define USB_MAXBUS 64 #define USB_DEVICE_MAX USB_MAXBUS * 128 +#define USB_SG_SIZE 16384 /* split-size for large txs */ /* Mutual exclusion for removal, open, and release */ DEFINE_MUTEX(usbfs_mutex); @@ -285,9 +287,16 @@ static struct async *alloc_async(unsigned int numisoframes) static void free_async(struct async *as) { + int i; + put_pid(as->pid); if (as->cred) put_cred(as->cred); + for (i = 0; i < as->urb->num_sgs; i++) { + if (sg_page(&as->urb->sg[i])) + kfree(sg_virt(&as->urb->sg[i])); + } + kfree(as->urb->sg); kfree(as->urb->transfer_buffer); kfree(as->urb->setup_packet); usb_free_urb(as->urb); @@ -388,6 +397,53 @@ static void snoop_urb(struct usb_device *udev, } } +static void snoop_urb_data(struct urb *urb, unsigned len) +{ + int i, size; + + if (!usbfs_snoop) + return; + + if (urb->num_sgs == 0) { + print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1, + urb->transfer_buffer, len, 1); + return; + } + + for (i = 0; i < urb->num_sgs && len; i++) { + size = (len > USB_SG_SIZE) ? USB_SG_SIZE : len; + print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1, + sg_virt(&urb->sg[i]), size, 1); + len -= size; + } +} + +static int copy_urb_data_to_user(u8 __user *userbuffer, struct urb *urb) +{ + unsigned i, len, size; + + if (urb->number_of_packets > 0) /* Isochronous */ + len = urb->transfer_buffer_length; + else /* Non-Isoc */ + len = urb->actual_length; + + if (urb->num_sgs == 0) { + if (copy_to_user(userbuffer, urb->transfer_buffer, len)) + return -EFAULT; + return 0; + } + + for (i = 0; i < urb->num_sgs && len; i++) { + size = (len > USB_SG_SIZE) ? USB_SG_SIZE : len; + if (copy_to_user(userbuffer, sg_virt(&urb->sg[i]), size)) + return -EFAULT; + userbuffer += size; + len -= size; + } + + return 0; +} + #define AS_CONTINUATION 1 #define AS_UNLINK 2 @@ -454,9 +510,10 @@ static void async_completed(struct urb *urb) } snoop(&urb->dev->dev, "urb complete\n"); snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length, - as->status, COMPLETE, - ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_OUT) ? - NULL : urb->transfer_buffer, urb->actual_length); + as->status, COMPLETE, NULL, 0); + if ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_IN) + snoop_urb_data(urb, urb->actual_length); + if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET && as->status != -ENOENT) cancel_bulk_urbs(ps, as->bulk_addr); @@ -1114,8 +1171,8 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, struct async *as = NULL; struct usb_ctrlrequest *dr = NULL; unsigned int u, totlen, isofrmlen; - int ret, ifnum = -1; - int is_in; + int i, ret, is_in, num_sgs = 0, ifnum = -1; + void *buf; if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP | USBDEVFS_URB_SHORT_NOT_OK | @@ -1199,6 +1256,9 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, goto interrupt_urb; } uurb->number_of_packets = 0; + num_sgs = DIV_ROUND_UP(uurb->buffer_length, USB_SG_SIZE); + if (num_sgs == 1 || num_sgs > ps->dev->bus->sg_tablesize) + num_sgs = 0; break; case USBDEVFS_URB_TYPE_INTERRUPT: @@ -1255,26 +1315,67 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, ret = -ENOMEM; goto error; } - u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length; + + u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length + + num_sgs * sizeof(struct scatterlist); ret = usbfs_increase_memory_usage(u); if (ret) goto error; as->mem_usage = u; - if (uurb->buffer_length > 0) { + if (num_sgs) { + as->urb->sg = kmalloc(num_sgs * sizeof(struct scatterlist), + GFP_KERNEL); + if (!as->urb->sg) { + ret = -ENOMEM; + goto error; + } + as->urb->num_sgs = num_sgs; + sg_init_table(as->urb->sg, as->urb->num_sgs); + + totlen = uurb->buffer_length; + for (i = 0; i < as->urb->num_sgs; i++) { + u = (totlen > USB_SG_SIZE) ? USB_SG_SIZE : totlen; + buf = kmalloc(u, GFP_KERNEL); + if (!buf) { + ret = -ENOMEM; + goto error; + } + sg_set_buf(&as->urb->sg[i], buf, u); + + if (!is_in) { + if (copy_from_user(buf, uurb->buffer, u)) { + ret = -EFAULT; + goto error; + } + } + totlen -= u; + } + } else if (uurb->buffer_length > 0) { as->urb->transfer_buffer = kmalloc(uurb->buffer_length, GFP_KERNEL); if (!as->urb->transfer_buffer) { ret = -ENOMEM; goto error; } - /* Isochronous input data may end up being discontiguous - * if some of the packets are short. Clear the buffer so - * that the gaps don't leak kernel data to userspace. - */ - if (is_in && uurb->type == USBDEVFS_URB_TYPE_ISO) + + if (!is_in) { + if (copy_from_user(as->urb->transfer_buffer, + uurb->buffer, + uurb->buffer_length)) { + ret = -EFAULT; + goto error; + } + } else if (uurb->type == USBDEVFS_URB_TYPE_ISO) { + /* + * Isochronous input data may end up being + * discontiguous if some of the packets are short. + * Clear the buffer so that the gaps don't leak + * kernel data to userspace. + */ memset(as->urb->transfer_buffer, 0, uurb->buffer_length); + } } as->urb->dev = ps->dev; as->urb->pipe = (uurb->type << 30) | @@ -1328,17 +1429,12 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb, as->pid = get_pid(task_pid(current)); as->cred = get_current_cred(); security_task_getsecid(current, &as->secid); - if (!is_in && uurb->buffer_length > 0) { - if (copy_from_user(as->urb->transfer_buffer, uurb->buffer, - uurb->buffer_length)) { - ret = -EFAULT; - goto error; - } - } snoop_urb(ps->dev, as->userurb, as->urb->pipe, as->urb->transfer_buffer_length, 0, SUBMIT, - is_in ? NULL : as->urb->transfer_buffer, - uurb->buffer_length); + NULL, 0); + if (!is_in) + snoop_urb_data(as->urb, as->urb->transfer_buffer_length); + async_newpending(as); if (usb_endpoint_xfer_bulk(&ep->desc)) { @@ -1433,11 +1529,7 @@ static int processcompl(struct async *as, void __user * __user *arg) unsigned int i; if (as->userbuffer && urb->actual_length) { - if (urb->number_of_packets > 0) /* Isochronous */ - i = urb->transfer_buffer_length; - else /* Non-Isoc */ - i = urb->actual_length; - if (copy_to_user(as->userbuffer, urb->transfer_buffer, i)) + if (copy_urb_data_to_user(as->userbuffer, urb)) goto err_out; } if (put_user(as->status, &userurb->status)) @@ -1604,10 +1696,10 @@ static int processcompl_compat(struct async *as, void __user * __user *arg) void __user *addr = as->userurb; unsigned int i; - if (as->userbuffer && urb->actual_length) - if (copy_to_user(as->userbuffer, urb->transfer_buffer, - urb->actual_length)) + if (as->userbuffer && urb->actual_length) { + if (copy_urb_data_to_user(as->userbuffer, urb)) return -EFAULT; + } if (put_user(as->status, &userurb->status)) return -EFAULT; if (put_user(urb->actual_length, &userurb->actual_length)) @@ -1820,6 +1912,22 @@ static int proc_release_port(struct dev_state *ps, void __user *arg) return usb_hub_release_port(ps->dev, portnum, ps); } +static int proc_get_capabilities(struct dev_state *ps, void __user *arg) +{ + __u32 caps; + + caps = USBDEVFS_CAP_ZERO_PACKET | USBDEVFS_CAP_NO_PACKET_SIZE_LIM; + if (!ps->dev->bus->no_stop_on_short) + caps |= USBDEVFS_CAP_BULK_CONTINUATION; + if (ps->dev->bus->sg_tablesize) + caps |= USBDEVFS_CAP_BULK_SCATTER_GATHER; + + if (put_user(caps, (__u32 __user *)arg)) + return -EFAULT; + + return 0; +} + /* * NOTE: All requests here that have interface numbers as parameters * are assuming that somehow the configuration has been prevented from @@ -1990,6 +2098,9 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd, snoop(&dev->dev, "%s: RELEASE_PORT\n", __func__); ret = proc_release_port(ps, p); break; + case USBDEVFS_GET_CAPABILITIES: + ret = proc_get_capabilities(ps, p); + break; } usb_unlock_device(dev); if (ret >= 0) diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index f536aebc958e..445455a4429b 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -367,6 +367,7 @@ static int usb_probe_interface(struct device *dev) return error; err: + usb_set_intfdata(intf, NULL); intf->needs_remote_wakeup = 0; intf->condition = USB_INTERFACE_UNBOUND; usb_cancel_queued_reset(intf); @@ -606,30 +607,19 @@ int usb_match_device(struct usb_device *dev, const struct usb_device_id *id) } /* returns 0 if no match, 1 if match */ -int usb_match_one_id(struct usb_interface *interface, - const struct usb_device_id *id) +int usb_match_one_id_intf(struct usb_device *dev, + struct usb_host_interface *intf, + const struct usb_device_id *id) { - struct usb_host_interface *intf; - struct usb_device *dev; - - /* proc_connectinfo in devio.c may call us with id == NULL. */ - if (id == NULL) - return 0; - - intf = interface->cur_altsetting; - dev = interface_to_usbdev(interface); - - if (!usb_match_device(dev, id)) - return 0; - - /* The interface class, subclass, and protocol should never be + /* The interface class, subclass, protocol and number should never be * checked for a match if the device class is Vendor Specific, * unless the match record specifies the Vendor ID. */ if (dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC && !(id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) && (id->match_flags & (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS | - USB_DEVICE_ID_MATCH_INT_PROTOCOL))) + USB_DEVICE_ID_MATCH_INT_PROTOCOL | + USB_DEVICE_ID_MATCH_INT_NUMBER))) return 0; if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_CLASS) && @@ -644,8 +634,32 @@ int usb_match_one_id(struct usb_interface *interface, (id->bInterfaceProtocol != intf->desc.bInterfaceProtocol)) return 0; + if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) && + (id->bInterfaceNumber != intf->desc.bInterfaceNumber)) + return 0; + return 1; } + +/* returns 0 if no match, 1 if match */ +int usb_match_one_id(struct usb_interface *interface, + const struct usb_device_id *id) +{ + struct usb_host_interface *intf; + struct usb_device *dev; + + /* proc_connectinfo in devio.c may call us with id == NULL. */ + if (id == NULL) + return 0; + + intf = interface->cur_altsetting; + dev = interface_to_usbdev(interface); + + if (!usb_match_device(dev, id)) + return 0; + + return usb_match_one_id_intf(dev, intf, id); +} EXPORT_SYMBOL_GPL(usb_match_one_id); /** diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index e673b26e598f..e5387a47ef6f 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -92,7 +92,7 @@ static int init_usb_class(void) } kref_init(&usb_class->kref); - usb_class->class = class_create(THIS_MODULE, "usb"); + usb_class->class = class_create(THIS_MODULE, "usbmisc"); if (IS_ERR(usb_class->class)) { result = IS_ERR(usb_class->class); printk(KERN_ERR "class_create failed for usb devices\n"); diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 190b1ec7bdcb..bc84106ac057 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1398,7 +1398,15 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) { if (hcd->self.uses_dma) { if (urb->num_sgs) { - int n = dma_map_sg( + int n; + + /* We don't support sg for isoc transfers ! */ + if (usb_endpoint_xfer_isoc(&urb->ep->desc)) { + WARN_ON(1); + return -EINVAL; + } + + n = dma_map_sg( hcd->self.controller, urb->sg, urb->num_sgs, diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 8fb484984c86..821126eb8176 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -20,6 +20,7 @@ #include <linux/usb.h> #include <linux/usbdevice_fs.h> #include <linux/usb/hcd.h> +#include <linux/usb/otg.h> #include <linux/usb/quirks.h> #include <linux/kthread.h> #include <linux/mutex.h> @@ -81,7 +82,7 @@ struct usb_hub { u8 indicator[USB_MAXCHILDREN]; struct delayed_work leds; struct delayed_work init_work; - void **port_owners; + struct dev_state **port_owners; }; static inline int hub_is_superspeed(struct usb_device *hdev) @@ -1271,7 +1272,8 @@ static int hub_configure(struct usb_hub *hub, hdev->children = kzalloc(hdev->maxchild * sizeof(struct usb_device *), GFP_KERNEL); - hub->port_owners = kzalloc(hdev->maxchild * sizeof(void *), GFP_KERNEL); + hub->port_owners = kzalloc(hdev->maxchild * sizeof(struct dev_state *), + GFP_KERNEL); if (!hdev->children || !hub->port_owners) { ret = -ENOMEM; goto fail; @@ -1649,7 +1651,7 @@ hub_ioctl(struct usb_interface *intf, unsigned int code, void *user_data) * to one of these "claimed" ports, the program will "own" the device. */ static int find_port_owner(struct usb_device *hdev, unsigned port1, - void ***ppowner) + struct dev_state ***ppowner) { if (hdev->state == USB_STATE_NOTATTACHED) return -ENODEV; @@ -1664,10 +1666,11 @@ static int find_port_owner(struct usb_device *hdev, unsigned port1, } /* In the following three functions, the caller must hold hdev's lock */ -int usb_hub_claim_port(struct usb_device *hdev, unsigned port1, void *owner) +int usb_hub_claim_port(struct usb_device *hdev, unsigned port1, + struct dev_state *owner) { int rc; - void **powner; + struct dev_state **powner; rc = find_port_owner(hdev, port1, &powner); if (rc) @@ -1678,10 +1681,11 @@ int usb_hub_claim_port(struct usb_device *hdev, unsigned port1, void *owner) return rc; } -int usb_hub_release_port(struct usb_device *hdev, unsigned port1, void *owner) +int usb_hub_release_port(struct usb_device *hdev, unsigned port1, + struct dev_state *owner) { int rc; - void **powner; + struct dev_state **powner; rc = find_port_owner(hdev, port1, &powner); if (rc) @@ -1692,10 +1696,10 @@ int usb_hub_release_port(struct usb_device *hdev, unsigned port1, void *owner) return rc; } -void usb_hub_release_all_ports(struct usb_device *hdev, void *owner) +void usb_hub_release_all_ports(struct usb_device *hdev, struct dev_state *owner) { int n; - void **powner; + struct dev_state **powner; n = find_port_owner(hdev, 1, &powner); if (n == 0) { @@ -2065,7 +2069,7 @@ static int usb_enumerate_device(struct usb_device *udev) if (err < 0) { dev_err(&udev->dev, "can't read configurations, error %d\n", err); - goto fail; + return err; } } if (udev->wusb == 1 && udev->authorized == 0) { @@ -2081,8 +2085,12 @@ static int usb_enumerate_device(struct usb_device *udev) udev->serial = usb_cache_string(udev, udev->descriptor.iSerialNumber); } err = usb_enumerate_device_otg(udev); -fail: - return err; + if (err < 0) + return err; + + usb_detect_interface_quirks(udev); + + return 0; } static void set_usb_port_removable(struct usb_device *udev) @@ -2611,6 +2619,50 @@ static int check_port_resume_type(struct usb_device *udev, return status; } +int usb_disable_ltm(struct usb_device *udev) +{ + struct usb_hcd *hcd = bus_to_hcd(udev->bus); + + /* Check if the roothub and device supports LTM. */ + if (!usb_device_supports_ltm(hcd->self.root_hub) || + !usb_device_supports_ltm(udev)) + return 0; + + /* Clear Feature LTM Enable can only be sent if the device is + * configured. + */ + if (!udev->actconfig) + return 0; + + return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, + USB_DEVICE_LTM_ENABLE, 0, NULL, 0, + USB_CTRL_SET_TIMEOUT); +} +EXPORT_SYMBOL_GPL(usb_disable_ltm); + +void usb_enable_ltm(struct usb_device *udev) +{ + struct usb_hcd *hcd = bus_to_hcd(udev->bus); + + /* Check if the roothub and device supports LTM. */ + if (!usb_device_supports_ltm(hcd->self.root_hub) || + !usb_device_supports_ltm(udev)) + return; + + /* Set Feature LTM Enable can only be sent if the device is + * configured. + */ + if (!udev->actconfig) + return; + + usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, + USB_DEVICE_LTM_ENABLE, 0, NULL, 0, + USB_CTRL_SET_TIMEOUT); +} +EXPORT_SYMBOL_GPL(usb_enable_ltm); + #ifdef CONFIG_USB_SUSPEND /* @@ -2706,6 +2758,11 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) if (udev->usb2_hw_lpm_enabled == 1) usb_set_usb2_hardware_lpm(udev, 0); + if (usb_disable_ltm(udev)) { + dev_err(&udev->dev, "%s Failed to disable LTM before suspend\n.", + __func__); + return -ENOMEM; + } if (usb_unlocked_disable_lpm(udev)) { dev_err(&udev->dev, "%s Failed to disable LPM before suspend\n.", __func__); @@ -2735,7 +2792,8 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) if (udev->usb2_hw_lpm_capable == 1) usb_set_usb2_hardware_lpm(udev, 1); - /* Try to enable USB3 LPM again */ + /* Try to enable USB3 LTM and LPM again */ + usb_enable_ltm(udev); usb_unlocked_enable_lpm(udev); /* System sleep transitions should never fail */ @@ -2936,7 +2994,8 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) if (udev->usb2_hw_lpm_capable == 1) usb_set_usb2_hardware_lpm(udev, 1); - /* Try to enable USB3 LPM */ + /* Try to enable USB3 LTM and LPM */ + usb_enable_ltm(udev); usb_unlocked_enable_lpm(udev); } @@ -3489,6 +3548,15 @@ EXPORT_SYMBOL_GPL(usb_unlocked_disable_lpm); void usb_unlocked_enable_lpm(struct usb_device *udev) { } EXPORT_SYMBOL_GPL(usb_unlocked_enable_lpm); + +int usb_disable_ltm(struct usb_device *udev) +{ + return 0; +} +EXPORT_SYMBOL_GPL(usb_disable_ltm); + +void usb_enable_ltm(struct usb_device *udev) { } +EXPORT_SYMBOL_GPL(usb_enable_ltm); #endif @@ -4038,6 +4106,13 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, } } + if (hcd->phy && !hdev->parent) { + if (portstatus & USB_PORT_STAT_CONNECTION) + usb_phy_notify_connect(hcd->phy, port1); + else + usb_phy_notify_disconnect(hcd->phy, port1); + } + /* Return now if debouncing failed or nothing is connected or * the device was "removed". */ @@ -4672,6 +4747,23 @@ static int usb_reset_and_verify_device(struct usb_device *udev) } parent_hub = hdev_to_hub(parent_hdev); + /* Disable LPM and LTM while we reset the device and reinstall the alt + * settings. Device-initiated LPM settings, and system exit latency + * settings are cleared when the device is reset, so we have to set + * them up again. + */ + ret = usb_unlocked_disable_lpm(udev); + if (ret) { + dev_err(&udev->dev, "%s Failed to disable LPM\n.", __func__); + goto re_enumerate; + } + ret = usb_disable_ltm(udev); + if (ret) { + dev_err(&udev->dev, "%s Failed to disable LTM\n.", + __func__); + goto re_enumerate; + } + set_bit(port1, parent_hub->busy_bits); for (i = 0; i < SET_CONFIG_TRIES; ++i) { @@ -4699,22 +4791,11 @@ static int usb_reset_and_verify_device(struct usb_device *udev) goto done; mutex_lock(hcd->bandwidth_mutex); - /* Disable LPM while we reset the device and reinstall the alt settings. - * Device-initiated LPM settings, and system exit latency settings are - * cleared when the device is reset, so we have to set them up again. - */ - ret = usb_disable_lpm(udev); - if (ret) { - dev_err(&udev->dev, "%s Failed to disable LPM\n.", __func__); - mutex_unlock(hcd->bandwidth_mutex); - goto done; - } ret = usb_hcd_alloc_bandwidth(udev, udev->actconfig, NULL, NULL); if (ret < 0) { dev_warn(&udev->dev, "Busted HC? Not enough HCD resources for " "old configuration.\n"); - usb_enable_lpm(udev); mutex_unlock(hcd->bandwidth_mutex); goto re_enumerate; } @@ -4726,7 +4807,6 @@ static int usb_reset_and_verify_device(struct usb_device *udev) dev_err(&udev->dev, "can't restore configuration #%d (error=%d)\n", udev->actconfig->desc.bConfigurationValue, ret); - usb_enable_lpm(udev); mutex_unlock(hcd->bandwidth_mutex); goto re_enumerate; } @@ -4765,17 +4845,18 @@ static int usb_reset_and_verify_device(struct usb_device *udev) desc->bInterfaceNumber, desc->bAlternateSetting, ret); - usb_unlocked_enable_lpm(udev); goto re_enumerate; } } - /* Now that the alt settings are re-installed, enable LPM. */ - usb_unlocked_enable_lpm(udev); done: + /* Now that the alt settings are re-installed, enable LTM and LPM. */ + usb_unlocked_enable_lpm(udev); + usb_enable_ltm(udev); return 0; re_enumerate: + /* LPM state doesn't matter when we're about to destroy the device. */ hub_port_logical_disconnect(parent_hub, port1); return -ENODEV; } diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index bdd1c6749d88..0ab7da2283e3 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1174,6 +1174,8 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) put_device(&dev->actconfig->interface[i]->dev); dev->actconfig->interface[i] = NULL; } + usb_unlocked_disable_lpm(dev); + usb_disable_ltm(dev); dev->actconfig = NULL; if (dev->state == USB_STATE_CONFIGURED) usb_set_device_state(dev, USB_STATE_ADDRESS); @@ -1559,7 +1561,7 @@ static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) if (add_uevent_var(env, "MODALIAS=usb:" - "v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X", + "v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02Xin%02X", le16_to_cpu(usb_dev->descriptor.idVendor), le16_to_cpu(usb_dev->descriptor.idProduct), le16_to_cpu(usb_dev->descriptor.bcdDevice), @@ -1568,7 +1570,8 @@ static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) usb_dev->descriptor.bDeviceProtocol, alt->desc.bInterfaceClass, alt->desc.bInterfaceSubClass, - alt->desc.bInterfaceProtocol)) + alt->desc.bInterfaceProtocol, + alt->desc.bInterfaceNumber)) return -ENOMEM; return 0; @@ -1791,14 +1794,15 @@ free_interfaces: * installed, so that the xHCI driver can recalculate the U1/U2 * timeouts. */ - if (usb_disable_lpm(dev)) { + if (dev->actconfig && usb_disable_lpm(dev)) { dev_err(&dev->dev, "%s Failed to disable LPM\n.", __func__); mutex_unlock(hcd->bandwidth_mutex); return -ENOMEM; } ret = usb_hcd_alloc_bandwidth(dev, cp, NULL, NULL); if (ret < 0) { - usb_enable_lpm(dev); + if (dev->actconfig) + usb_enable_lpm(dev); mutex_unlock(hcd->bandwidth_mutex); usb_autosuspend_device(dev); goto free_interfaces; @@ -1818,7 +1822,7 @@ free_interfaces: if (!cp) { usb_set_device_state(dev, USB_STATE_ADDRESS); usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL); - usb_enable_lpm(dev); + /* Leave LPM disabled while the device is unconfigured. */ mutex_unlock(hcd->bandwidth_mutex); usb_autosuspend_device(dev); goto free_interfaces; @@ -1876,6 +1880,8 @@ free_interfaces: /* Now that the interfaces are installed, re-enable LPM. */ usb_unlocked_enable_lpm(dev); + /* Enable LTM if it was turned off by usb_disable_device. */ + usb_enable_ltm(dev); /* Now that all the interfaces are set up, register them * to trigger binding of drivers to interfaces. probe() diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 32d3adc315f5..f15501f4c585 100644 --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -15,17 +15,22 @@ #include <linux/usb/quirks.h> #include "usb.h" -/* List of quirky USB devices. Please keep this list ordered by: +/* Lists of quirky USB devices, split in device quirks and interface quirks. + * Device quirks are applied at the very beginning of the enumeration process, + * right after reading the device descriptor. They can thus only match on device + * information. + * + * Interface quirks are applied after reading all the configuration descriptors. + * They can match on both device and interface information. + * + * Note that the DELAY_INIT and HONOR_BNUMINTERFACES quirks do not make sense as + * interface quirks, as they only influence the enumeration process which is run + * before processing the interface quirks. + * + * Please keep the lists ordered by: * 1) Vendor ID * 2) Product ID * 3) Class ID - * - * as we want specific devices to be overridden first, and only after that, any - * class specific quirks. - * - * Right now the logic aborts if it finds a valid device in the table, we might - * want to change that in the future if it turns out that a whole class of - * devices is broken... */ static const struct usb_device_id usb_quirk_list[] = { /* CBM - Flash disk */ @@ -38,53 +43,23 @@ static const struct usb_device_id usb_quirk_list[] = { /* Creative SB Audigy 2 NX */ { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C200 */ - { USB_DEVICE(0x046d, 0x0802), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C250 */ - { USB_DEVICE(0x046d, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C300 */ - { USB_DEVICE(0x046d, 0x0805), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam B/C500 */ - { USB_DEVICE(0x046d, 0x0807), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C600 */ - { USB_DEVICE(0x046d, 0x0808), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam Pro 9000 */ - { USB_DEVICE(0x046d, 0x0809), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam Fusion */ + { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C905 */ - { USB_DEVICE(0x046d, 0x080a), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam Orbit MP */ + { USB_DEVICE(0x046d, 0x08c2), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C210 */ - { USB_DEVICE(0x046d, 0x0819), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam Pro for Notebook */ + { USB_DEVICE(0x046d, 0x08c3), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C260 */ - { USB_DEVICE(0x046d, 0x081a), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam Pro 5000 */ + { USB_DEVICE(0x046d, 0x08c5), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C310 */ - { USB_DEVICE(0x046d, 0x081b), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam OEM Dell Notebook */ + { USB_DEVICE(0x046d, 0x08c6), .driver_info = USB_QUIRK_RESET_RESUME }, - /* Logitech Webcam C910 */ - { USB_DEVICE(0x046d, 0x0821), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C160 */ - { USB_DEVICE(0x046d, 0x0824), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Webcam C270 */ - { USB_DEVICE(0x046d, 0x0825), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Quickcam Pro 9000 */ - { USB_DEVICE(0x046d, 0x0990), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Quickcam E3500 */ - { USB_DEVICE(0x046d, 0x09a4), .driver_info = USB_QUIRK_RESET_RESUME }, - - /* Logitech Quickcam Vision Pro */ - { USB_DEVICE(0x046d, 0x09a6), .driver_info = USB_QUIRK_RESET_RESUME }, + /* Logitech Quickcam OEM Cisco VT Camera II */ + { USB_DEVICE(0x046d, 0x08c7), .driver_info = USB_QUIRK_RESET_RESUME }, /* Logitech Harmony 700-series */ { USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT }, @@ -156,16 +131,57 @@ static const struct usb_device_id usb_quirk_list[] = { { } /* terminating entry must be last */ }; -static const struct usb_device_id *find_id(struct usb_device *udev) +static const struct usb_device_id usb_interface_quirk_list[] = { + /* Logitech UVC Cameras */ + { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0), + .driver_info = USB_QUIRK_RESET_RESUME }, + + { } /* terminating entry must be last */ +}; + +static bool usb_match_any_interface(struct usb_device *udev, + const struct usb_device_id *id) { - const struct usb_device_id *id = usb_quirk_list; + unsigned int i; - for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass || - id->driver_info; id++) { - if (usb_match_device(udev, id)) - return id; + for (i = 0; i < udev->descriptor.bNumConfigurations; ++i) { + struct usb_host_config *cfg = &udev->config[i]; + unsigned int j; + + for (j = 0; j < cfg->desc.bNumInterfaces; ++j) { + struct usb_interface_cache *cache; + struct usb_host_interface *intf; + + cache = cfg->intf_cache[j]; + if (cache->num_altsetting == 0) + continue; + + intf = &cache->altsetting[0]; + if (usb_match_one_id_intf(udev, intf, id)) + return true; + } + } + + return false; +} + +static u32 __usb_detect_quirks(struct usb_device *udev, + const struct usb_device_id *id) +{ + u32 quirks = 0; + + for (; id->match_flags; id++) { + if (!usb_match_device(udev, id)) + continue; + + if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_INFO) && + !usb_match_any_interface(udev, id)) + continue; + + quirks |= (u32)(id->driver_info); } - return NULL; + + return quirks; } /* @@ -173,14 +189,10 @@ static const struct usb_device_id *find_id(struct usb_device *udev) */ void usb_detect_quirks(struct usb_device *udev) { - const struct usb_device_id *id = usb_quirk_list; - - id = find_id(udev); - if (id) - udev->quirks = (u32)(id->driver_info); + udev->quirks = __usb_detect_quirks(udev, usb_quirk_list); if (udev->quirks) dev_dbg(&udev->dev, "USB quirks for this device: %x\n", - udev->quirks); + udev->quirks); /* For the present, all devices default to USB-PERSIST enabled */ #if 0 /* was: #ifdef CONFIG_PM */ @@ -197,3 +209,16 @@ void usb_detect_quirks(struct usb_device *udev) udev->persist_enabled = 1; #endif /* CONFIG_PM */ } + +void usb_detect_interface_quirks(struct usb_device *udev) +{ + u32 quirks; + + quirks = __usb_detect_quirks(udev, usb_interface_quirk_list); + if (quirks == 0) + return; + + dev_dbg(&udev->dev, "USB interface quirks for this device: %x\n", + quirks); + udev->quirks |= quirks; +} diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 9a56e3adf476..682e8256b95d 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -253,6 +253,15 @@ show_removable(struct device *dev, struct device_attribute *attr, char *buf) } static DEVICE_ATTR(removable, S_IRUGO, show_removable, NULL); +static ssize_t +show_ltm_capable(struct device *dev, struct device_attribute *attr, char *buf) +{ + if (usb_device_supports_ltm(to_usb_device(dev))) + return sprintf(buf, "%s\n", "yes"); + return sprintf(buf, "%s\n", "no"); +} +static DEVICE_ATTR(ltm_capable, S_IRUGO, show_ltm_capable, NULL); + #ifdef CONFIG_PM static ssize_t @@ -649,6 +658,7 @@ static struct attribute *dev_attrs[] = { &dev_attr_authorized.attr, &dev_attr_remove.attr, &dev_attr_removable.attr, + &dev_attr_ltm_capable.attr, NULL, }; static struct attribute_group dev_attr_grp = { @@ -840,7 +850,7 @@ static ssize_t show_modalias(struct device *dev, alt = intf->cur_altsetting; return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02X" - "ic%02Xisc%02Xip%02X\n", + "ic%02Xisc%02Xip%02Xin%02X\n", le16_to_cpu(udev->descriptor.idVendor), le16_to_cpu(udev->descriptor.idProduct), le16_to_cpu(udev->descriptor.bcdDevice), @@ -849,7 +859,8 @@ static ssize_t show_modalias(struct device *dev, udev->descriptor.bDeviceProtocol, alt->desc.bInterfaceClass, alt->desc.bInterfaceSubClass, - alt->desc.bInterfaceProtocol); + alt->desc.bInterfaceProtocol, + alt->desc.bInterfaceNumber); } static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL); diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 25d0c61c3f8a..cd8fb44a3e16 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -396,6 +396,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, dev->dev.dma_mask = bus->controller->dma_mask; set_dev_node(&dev->dev, dev_to_node(bus->controller)); dev->state = USB_STATE_ATTACHED; + dev->lpm_disable_count = 1; atomic_set(&dev->urbnum, 0); INIT_LIST_HEAD(&dev->ep0.urb_list); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 5c5c538ea73d..acb103c5c391 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -1,5 +1,7 @@ #include <linux/pm.h> +struct dev_state; + /* Functions local to drivers/usb/core/ */ extern int usb_create_sysfs_dev_files(struct usb_device *dev); @@ -24,6 +26,7 @@ extern void usb_disable_device(struct usb_device *dev, int skip_ep0); extern int usb_deauthorize_device(struct usb_device *); extern int usb_authorize_device(struct usb_device *); extern void usb_detect_quirks(struct usb_device *udev); +extern void usb_detect_interface_quirks(struct usb_device *udev); extern int usb_remove_device(struct usb_device *udev); extern int usb_get_device_descriptor(struct usb_device *dev, @@ -35,16 +38,20 @@ extern int usb_set_configuration(struct usb_device *dev, int configuration); extern int usb_choose_configuration(struct usb_device *udev); extern void usb_kick_khubd(struct usb_device *dev); +extern int usb_match_one_id_intf(struct usb_device *dev, + struct usb_host_interface *intf, + const struct usb_device_id *id); extern int usb_match_device(struct usb_device *dev, const struct usb_device_id *id); extern void usb_forced_unbind_intf(struct usb_interface *intf); extern void usb_rebind_intf(struct usb_interface *intf); extern int usb_hub_claim_port(struct usb_device *hdev, unsigned port, - void *owner); + struct dev_state *owner); extern int usb_hub_release_port(struct usb_device *hdev, unsigned port, - void *owner); -extern void usb_hub_release_all_ports(struct usb_device *hdev, void *owner); + struct dev_state *owner); +extern void usb_hub_release_all_ports(struct usb_device *hdev, + struct dev_state *owner); extern bool usb_device_is_owned(struct usb_device *udev); extern int usb_hub_init(void); diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 1040bdb8dc88..c34452a7304f 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -148,6 +148,8 @@ static void dwc3_core_soft_reset(struct dwc3 *dwc) reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST; dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); + mdelay(100); + /* After PHYs are stable we can take Core out of reset state */ reg = dwc3_readl(dwc->regs, DWC3_GCTL); reg &= ~DWC3_GCTL_CORESOFTRESET; @@ -255,7 +257,7 @@ static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length) * * Returns 0 on success otherwise negative errno. */ -static int __devinit dwc3_event_buffers_setup(struct dwc3 *dwc) +static int dwc3_event_buffers_setup(struct dwc3 *dwc) { struct dwc3_event_buffer *evt; int n; @@ -266,6 +268,8 @@ static int __devinit dwc3_event_buffers_setup(struct dwc3 *dwc) evt->buf, (unsigned long long) evt->dma, evt->length); + evt->lpos = 0; + dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), lower_32_bits(evt->dma)); dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), @@ -285,6 +289,9 @@ static void dwc3_event_buffers_cleanup(struct dwc3 *dwc) for (n = 0; n < dwc->num_event_buffers; n++) { evt = dwc->ev_buffs[n]; + + evt->lpos = 0; + dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 0); dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 0); dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), 0); @@ -328,8 +335,6 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc) } dwc->revision = reg; - dwc3_core_soft_reset(dwc); - /* issue device SoftReset too */ timeout = jiffies + msecs_to_jiffies(500); dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST); @@ -347,6 +352,8 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc) cpu_relax(); } while (true); + dwc3_core_soft_reset(dwc); + dwc3_cache_hwparams(dwc); reg = dwc3_readl(dwc->regs, DWC3_GCTL); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index f69c877add09..151eca876dfd 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -67,6 +67,7 @@ #define DWC3_DEVICE_EVENT_CONNECT_DONE 2 #define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE 3 #define DWC3_DEVICE_EVENT_WAKEUP 4 +#define DWC3_DEVICE_EVENT_HIBER_REQ 5 #define DWC3_DEVICE_EVENT_EOPF 6 #define DWC3_DEVICE_EVENT_SOF 7 #define DWC3_DEVICE_EVENT_ERRATIC_ERROR 9 @@ -171,28 +172,36 @@ #define DWC3_GCTL_PRTCAP_DEVICE 2 #define DWC3_GCTL_PRTCAP_OTG 3 -#define DWC3_GCTL_CORESOFTRESET (1 << 11) -#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4) -#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3) -#define DWC3_GCTL_DISSCRAMBLE (1 << 3) -#define DWC3_GCTL_DSBLCLKGTNG (1 << 0) +#define DWC3_GCTL_CORESOFTRESET (1 << 11) +#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4) +#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3) +#define DWC3_GCTL_DISSCRAMBLE (1 << 3) +#define DWC3_GCTL_GBLHIBERNATIONEN (1 << 1) +#define DWC3_GCTL_DSBLCLKGTNG (1 << 0) /* Global USB2 PHY Configuration Register */ -#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) -#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) +#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) +#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) /* Global USB3 PIPE Control Register */ -#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31) -#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17) +#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31) +#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17) /* Global TX Fifo Size Register */ -#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff) -#define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000) +#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff) +#define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000) /* Global HWPARAMS1 Register */ #define DWC3_GHWPARAMS1_EN_PWROPT(n) (((n) & (3 << 24)) >> 24) #define DWC3_GHWPARAMS1_EN_PWROPT_NO 0 #define DWC3_GHWPARAMS1_EN_PWROPT_CLK 1 +#define DWC3_GHWPARAMS1_EN_PWROPT_HIB 2 +#define DWC3_GHWPARAMS1_PWROPT(n) ((n) << 24) +#define DWC3_GHWPARAMS1_PWROPT_MASK DWC3_GHWPARAMS1_PWROPT(3) + +/* Global HWPARAMS4 Register */ +#define DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(n) (((n) & (0x0f << 13)) >> 13) +#define DWC3_MAX_HIBER_SCRATCHBUFS 15 /* Device Configuration Register */ #define DWC3_DCFG_LPM_CAP (1 << 22) @@ -206,24 +215,32 @@ #define DWC3_DCFG_LOWSPEED (2 << 0) #define DWC3_DCFG_FULLSPEED1 (3 << 0) +#define DWC3_DCFG_LPM_CAP (1 << 22) + /* Device Control Register */ #define DWC3_DCTL_RUN_STOP (1 << 31) #define DWC3_DCTL_CSFTRST (1 << 30) #define DWC3_DCTL_LSFTRST (1 << 29) #define DWC3_DCTL_HIRD_THRES_MASK (0x1f << 24) -#define DWC3_DCTL_HIRD_THRES(n) (((n) & DWC3_DCTL_HIRD_THRES_MASK) >> 24) +#define DWC3_DCTL_HIRD_THRES(n) ((n) << 24) #define DWC3_DCTL_APPL1RES (1 << 23) -#define DWC3_DCTL_TRGTULST_MASK (0x0f << 17) -#define DWC3_DCTL_TRGTULST(n) ((n) << 17) - -#define DWC3_DCTL_TRGTULST_U2 (DWC3_DCTL_TRGTULST(2)) -#define DWC3_DCTL_TRGTULST_U3 (DWC3_DCTL_TRGTULST(3)) -#define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4)) -#define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5)) -#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6)) +/* These apply for core versions 1.87a and earlier */ +#define DWC3_DCTL_TRGTULST_MASK (0x0f << 17) +#define DWC3_DCTL_TRGTULST(n) ((n) << 17) +#define DWC3_DCTL_TRGTULST_U2 (DWC3_DCTL_TRGTULST(2)) +#define DWC3_DCTL_TRGTULST_U3 (DWC3_DCTL_TRGTULST(3)) +#define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4)) +#define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5)) +#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6)) + +/* These apply for core versions 1.94a and later */ +#define DWC3_DCTL_KEEP_CONNECT (1 << 19) +#define DWC3_DCTL_L1_HIBER_EN (1 << 18) +#define DWC3_DCTL_CRS (1 << 17) +#define DWC3_DCTL_CSS (1 << 16) #define DWC3_DCTL_INITU2ENA (1 << 12) #define DWC3_DCTL_ACCEPTU2ENA (1 << 11) @@ -249,6 +266,7 @@ #define DWC3_DEVTEN_ERRTICERREN (1 << 9) #define DWC3_DEVTEN_SOFEN (1 << 7) #define DWC3_DEVTEN_EOPFEN (1 << 6) +#define DWC3_DEVTEN_HIBERNATIONREQEVTEN (1 << 5) #define DWC3_DEVTEN_WKUPEVTEN (1 << 4) #define DWC3_DEVTEN_ULSTCNGEN (1 << 3) #define DWC3_DEVTEN_CONNECTDONEEN (1 << 2) @@ -256,7 +274,15 @@ #define DWC3_DEVTEN_DISCONNEVTEN (1 << 0) /* Device Status Register */ +#define DWC3_DSTS_DCNRD (1 << 29) + +/* This applies for core versions 1.87a and earlier */ #define DWC3_DSTS_PWRUPREQ (1 << 24) + +/* These apply for core versions 1.94a and later */ +#define DWC3_DSTS_RSS (1 << 25) +#define DWC3_DSTS_SSS (1 << 24) + #define DWC3_DSTS_COREIDLE (1 << 23) #define DWC3_DSTS_DEVCTRLHLT (1 << 22) @@ -265,7 +291,7 @@ #define DWC3_DSTS_RXFIFOEMPTY (1 << 17) -#define DWC3_DSTS_SOFFN_MASK (0x3ff << 3) +#define DWC3_DSTS_SOFFN_MASK (0x3fff << 3) #define DWC3_DSTS_SOFFN(n) (((n) & DWC3_DSTS_SOFFN_MASK) >> 3) #define DWC3_DSTS_CONNECTSPD (7 << 0) @@ -280,6 +306,11 @@ #define DWC3_DGCMD_SET_LMP 0x01 #define DWC3_DGCMD_SET_PERIODIC_PAR 0x02 #define DWC3_DGCMD_XMIT_FUNCTION 0x03 + +/* These apply for core versions 1.94a and later */ +#define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO 0x04 +#define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI 0x05 + #define DWC3_DGCMD_SELECTED_FIFO_FLUSH 0x09 #define DWC3_DGCMD_ALL_FIFO_FLUSH 0x0a #define DWC3_DGCMD_SET_ENDPOINT_NRDY 0x0c @@ -287,6 +318,15 @@ #define DWC3_DGCMD_STATUS(n) (((n) >> 15) & 1) #define DWC3_DGCMD_CMDACT (1 << 10) +#define DWC3_DGCMD_CMDIOC (1 << 8) + +/* Device Generic Command Parameter Register */ +#define DWC3_DGCMDPAR_FORCE_LINKPM_ACCEPT (1 << 0) +#define DWC3_DGCMDPAR_FIFO_NUM(n) ((n) << 0) +#define DWC3_DGCMDPAR_RX_FIFO (0 << 5) +#define DWC3_DGCMDPAR_TX_FIFO (1 << 5) +#define DWC3_DGCMDPAR_LOOPBACK_DIS (0 << 0) +#define DWC3_DGCMDPAR_LOOPBACK_ENA (1 << 0) /* Device Endpoint Command Register */ #define DWC3_DEPCMD_PARAM_SHIFT 16 @@ -303,7 +343,10 @@ #define DWC3_DEPCMD_STARTTRANSFER (0x06 << 0) #define DWC3_DEPCMD_CLEARSTALL (0x05 << 0) #define DWC3_DEPCMD_SETSTALL (0x04 << 0) +/* This applies for core versions 1.90a and earlier */ #define DWC3_DEPCMD_GETSEQNUMBER (0x03 << 0) +/* This applies for core versions 1.94a and later */ +#define DWC3_DEPCMD_GETEPSTATE (0x03 << 0) #define DWC3_DEPCMD_SETTRANSFRESOURCE (0x02 << 0) #define DWC3_DEPCMD_SETEPCONFIG (0x01 << 0) @@ -361,7 +404,8 @@ struct dwc3_event_buffer { * @current_trb: index of current used trb * @number: endpoint number (1 - 15) * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK - * @res_trans_idx: Resource transfer index + * @resource_index: Resource transfer index + * @current_uf: Current uf received through last event parameter * @interval: the intervall on which the ISOC transfer is started * @name: a human readable name e.g. ep1out-bulk * @direction: true for TX, false for RX @@ -385,6 +429,7 @@ struct dwc3_ep { #define DWC3_EP_WEDGE (1 << 2) #define DWC3_EP_BUSY (1 << 4) #define DWC3_EP_PENDING_REQUEST (1 << 5) +#define DWC3_EP_MISSED_ISOC (1 << 6) /* This last one is specific to EP0 */ #define DWC3_EP0_DIR_IN (1 << 31) @@ -393,7 +438,8 @@ struct dwc3_ep { u8 number; u8 type; - u8 res_trans_idx; + u8 resource_index; + u16 current_uf; u32 interval; char name[20]; @@ -437,6 +483,8 @@ enum dwc3_link_state { DWC3_LINK_STATE_HRESET = 0x09, DWC3_LINK_STATE_CMPLY = 0x0a, DWC3_LINK_STATE_LPBK = 0x0b, + DWC3_LINK_STATE_RESET = 0x0e, + DWC3_LINK_STATE_RESUME = 0x0f, DWC3_LINK_STATE_MASK = 0x0f, }; @@ -450,11 +498,12 @@ enum dwc3_device_state { #define DWC3_TRB_SIZE_MASK (0x00ffffff) #define DWC3_TRB_SIZE_LENGTH(n) ((n) & DWC3_TRB_SIZE_MASK) #define DWC3_TRB_SIZE_PCM1(n) (((n) & 0x03) << 24) -#define DWC3_TRB_SIZE_TRBSTS(n) (((n) & (0x0f << 28) >> 28)) +#define DWC3_TRB_SIZE_TRBSTS(n) (((n) & (0x0f << 28)) >> 28) #define DWC3_TRBSTS_OK 0 #define DWC3_TRBSTS_MISSED_ISOC 1 #define DWC3_TRBSTS_SETUP_PENDING 2 +#define DWC3_TRB_STS_XFER_IN_PROG 4 /* TRB Control */ #define DWC3_TRB_CTRL_HWO (1 << 0) @@ -543,6 +592,14 @@ struct dwc3_request { unsigned queued:1; }; +/* + * struct dwc3_scratchpad_array - hibernation scratchpad array + * (format defined by hw) + */ +struct dwc3_scratchpad_array { + __le64 dma_adr[DWC3_MAX_HIBER_SCRATCHBUFS]; +}; + /** * struct dwc3 - representation of our controller * @ctrl_req: usb control request which is used for ep0 @@ -624,8 +681,10 @@ struct dwc3 { #define DWC3_REVISION_180A 0x5533180a #define DWC3_REVISION_183A 0x5533183a #define DWC3_REVISION_185A 0x5533185a +#define DWC3_REVISION_187A 0x5533187a #define DWC3_REVISION_188A 0x5533188a #define DWC3_REVISION_190A 0x5533190a +#define DWC3_REVISION_194A 0x5533194a #define DWC3_REVISION_200A 0x5533200a #define DWC3_REVISION_202A 0x5533202a #define DWC3_REVISION_210A 0x5533210a diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index d19030198086..b8f00389fa34 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -18,7 +18,6 @@ #include <linux/platform_device.h> #include <linux/platform_data/dwc3-exynos.h> #include <linux/dma-mapping.h> -#include <linux/module.h> #include <linux/clk.h> #include "core.h" diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 9e8a3dce69fd..9b94886b66e5 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -54,7 +54,9 @@ #include "gadget.h" #include "io.h" -static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum); +static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep); +static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, + struct dwc3_ep *dep, struct dwc3_request *req); static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state) { @@ -111,7 +113,7 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, } dep->flags |= DWC3_EP_BUSY; - dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc, + dep->resource_index = dwc3_gadget_ep_get_transfer_index(dwc, dep->number); dwc->ep0_next_event = DWC3_EP0_COMPLETE; @@ -150,16 +152,15 @@ static int __dwc3_gadget_ep0_queue(struct dwc3_ep *dep, return 0; } - ret = dwc3_ep0_start_trans(dwc, direction, - req->request.dma, req->request.length, - DWC3_TRBCTL_CONTROL_DATA); + __dwc3_ep0_do_control_data(dwc, dwc->eps[direction], req); + dep->flags &= ~(DWC3_EP_PENDING_REQUEST | DWC3_EP0_DIR_IN); } else if (dwc->delayed_status) { dwc->delayed_status = false; if (dwc->ep0state == EP0_STATUS_PHASE) - dwc3_ep0_do_control_status(dwc, 1); + __dwc3_ep0_do_control_status(dwc, dwc->eps[1]); else dev_dbg(dwc->dev, "too early for delayed status\n"); } @@ -224,6 +225,16 @@ static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc) dwc3_ep0_out_start(dwc); } +int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value) +{ + struct dwc3_ep *dep = to_dwc3_ep(ep); + struct dwc3 *dwc = dep->dwc; + + dwc3_ep0_stall_and_restart(dwc); + + return 0; +} + void dwc3_ep0_out_start(struct dwc3 *dwc) { int ret; @@ -463,6 +474,7 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) { u32 cfg; int ret; + u32 reg; dwc->start_config_issued = false; cfg = le16_to_cpu(ctrl->wValue); @@ -477,6 +489,14 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) /* if the cfg matches and the cfg is non zero */ if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) { dwc->dev_state = DWC3_CONFIGURED_STATE; + /* + * Enable transition to U1/U2 state when + * nothing is pending from application. + */ + reg = dwc3_readl(dwc->regs, DWC3_DCTL); + reg |= (DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA); + dwc3_writel(dwc->regs, DWC3_DCTL, reg); + dwc->resize_fifos = true; dev_dbg(dwc->dev, "resize fifos flag SET\n"); } @@ -514,8 +534,8 @@ static void dwc3_ep0_set_sel_cmpl(struct usb_ep *ep, struct usb_request *req) dwc->u1sel = timing.u1sel; dwc->u1pel = timing.u1pel; - dwc->u2sel = timing.u2sel; - dwc->u2pel = timing.u2pel; + dwc->u2sel = le16_to_cpu(timing.u2sel); + dwc->u2pel = le16_to_cpu(timing.u2pel); reg = dwc3_readl(dwc->regs, DWC3_DCTL); if (reg & DWC3_DCTL_INITU2ENA) @@ -640,11 +660,11 @@ static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, const struct dwc3_event_depevt *event) { struct usb_ctrlrequest *ctrl = dwc->ctrl_req; - int ret; + int ret = -EINVAL; u32 len; if (!dwc->gadget_driver) - goto err; + goto out; len = le16_to_cpu(ctrl->wLength); if (!len) { @@ -665,11 +685,9 @@ static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, if (ret == USB_GADGET_DELAYED_STATUS) dwc->delayed_status = true; - if (ret >= 0) - return; - -err: - dwc3_ep0_stall_and_restart(dwc); +out: + if (ret < 0) + dwc3_ep0_stall_and_restart(dwc); } static void dwc3_ep0_complete_data(struct dwc3 *dwc, @@ -723,7 +741,7 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, } } -static void dwc3_ep0_complete_req(struct dwc3 *dwc, +static void dwc3_ep0_complete_status(struct dwc3 *dwc, const struct dwc3_event_depevt *event) { struct dwc3_request *r; @@ -745,6 +763,7 @@ static void dwc3_ep0_complete_req(struct dwc3 *dwc, dev_dbg(dwc->dev, "Invalid Test #%d\n", dwc->test_mode_nr); dwc3_ep0_stall_and_restart(dwc); + return; } } @@ -758,7 +777,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc, struct dwc3_ep *dep = dwc->eps[event->endpoint_number]; dep->flags &= ~DWC3_EP_BUSY; - dep->res_trans_idx = 0; + dep->resource_index = 0; dwc->setup_packet_pending = false; switch (dwc->ep0state) { @@ -774,7 +793,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc, case EP0_STATUS_PHASE: dev_vdbg(dwc->dev, "Status Phase\n"); - dwc3_ep0_complete_req(dwc, event); + dwc3_ep0_complete_status(dwc, event); break; default: WARN(true, "UNKNOWN ep0state %d\n", dwc->ep0state); @@ -787,68 +806,81 @@ static void dwc3_ep0_do_control_setup(struct dwc3 *dwc, dwc3_ep0_out_start(dwc); } -static void dwc3_ep0_do_control_data(struct dwc3 *dwc, - const struct dwc3_event_depevt *event) +static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, + struct dwc3_ep *dep, struct dwc3_request *req) { - struct dwc3_ep *dep; - struct dwc3_request *req; int ret; - dep = dwc->eps[0]; - - if (list_empty(&dep->request_list)) { - dev_vdbg(dwc->dev, "pending request for EP0 Data phase\n"); - dep->flags |= DWC3_EP_PENDING_REQUEST; - - if (event->endpoint_number) - dep->flags |= DWC3_EP0_DIR_IN; - return; - } - - req = next_request(&dep->request_list); - req->direction = !!event->endpoint_number; + req->direction = !!dep->number; if (req->request.length == 0) { - ret = dwc3_ep0_start_trans(dwc, event->endpoint_number, + ret = dwc3_ep0_start_trans(dwc, dep->number, dwc->ctrl_req_addr, 0, DWC3_TRBCTL_CONTROL_DATA); - } else if ((req->request.length % dep->endpoint.maxpacket) - && (event->endpoint_number == 0)) { + } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket) + && (dep->number == 0)) { + u32 transfer_size; + ret = usb_gadget_map_request(&dwc->gadget, &req->request, - event->endpoint_number); + dep->number); if (ret) { dev_dbg(dwc->dev, "failed to map request\n"); return; } - WARN_ON(req->request.length > dep->endpoint.maxpacket); + WARN_ON(req->request.length > DWC3_EP0_BOUNCE_SIZE); + + transfer_size = roundup(req->request.length, + (u32) dep->endpoint.maxpacket); dwc->ep0_bounced = true; /* - * REVISIT in case request length is bigger than EP0 - * wMaxPacketSize, we will need two chained TRBs to handle - * the transfer. + * REVISIT in case request length is bigger than + * DWC3_EP0_BOUNCE_SIZE we will need two chained + * TRBs to handle the transfer. */ - ret = dwc3_ep0_start_trans(dwc, event->endpoint_number, - dwc->ep0_bounce_addr, dep->endpoint.maxpacket, + ret = dwc3_ep0_start_trans(dwc, dep->number, + dwc->ep0_bounce_addr, transfer_size, DWC3_TRBCTL_CONTROL_DATA); } else { ret = usb_gadget_map_request(&dwc->gadget, &req->request, - event->endpoint_number); + dep->number); if (ret) { dev_dbg(dwc->dev, "failed to map request\n"); return; } - ret = dwc3_ep0_start_trans(dwc, event->endpoint_number, - req->request.dma, req->request.length, - DWC3_TRBCTL_CONTROL_DATA); + ret = dwc3_ep0_start_trans(dwc, dep->number, req->request.dma, + req->request.length, DWC3_TRBCTL_CONTROL_DATA); } WARN_ON(ret < 0); } +static void dwc3_ep0_do_control_data(struct dwc3 *dwc, + const struct dwc3_event_depevt *event) +{ + struct dwc3_ep *dep; + struct dwc3_request *req; + + dep = dwc->eps[0]; + + if (list_empty(&dep->request_list)) { + dev_vdbg(dwc->dev, "pending request for EP0 Data phase\n"); + dep->flags |= DWC3_EP_PENDING_REQUEST; + + if (event->endpoint_number) + dep->flags |= DWC3_EP0_DIR_IN; + return; + } + + req = next_request(&dep->request_list); + dep = dwc->eps[event->endpoint_number]; + + __dwc3_ep0_do_control_data(dwc, dep, req); +} + static int dwc3_ep0_start_control_status(struct dwc3_ep *dep) { struct dwc3 *dwc = dep->dwc; @@ -861,10 +893,8 @@ static int dwc3_ep0_start_control_status(struct dwc3_ep *dep) dwc->ctrl_req_addr, 0, type); } -static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum) +static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep) { - struct dwc3_ep *dep = dwc->eps[epnum]; - if (dwc->resize_fifos) { dev_dbg(dwc->dev, "starting to resize fifos\n"); dwc3_gadget_resize_tx_fifos(dwc); @@ -874,13 +904,21 @@ static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum) WARN_ON(dwc3_ep0_start_control_status(dep)); } +static void dwc3_ep0_do_control_status(struct dwc3 *dwc, + const struct dwc3_event_depevt *event) +{ + struct dwc3_ep *dep = dwc->eps[event->endpoint_number]; + + __dwc3_ep0_do_control_status(dwc, dep); +} + static void dwc3_ep0_xfernotready(struct dwc3 *dwc, const struct dwc3_event_depevt *event) { dwc->setup_packet_pending = true; /* - * This part is very tricky: If we has just handled + * This part is very tricky: If we have just handled * XferNotReady(Setup) and we're now expecting a * XferComplete but, instead, we receive another * XferNotReady(Setup), we should STALL and restart @@ -974,7 +1012,7 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc, return; } - dwc3_ep0_do_control_status(dwc, event->endpoint_number); + dwc3_ep0_do_control_status(dwc, event); } } diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index ec70df7aba17..58fdfad96b4d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -100,6 +100,23 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state) int retries = 10000; u32 reg; + /* + * Wait until device controller is ready. Only applies to 1.94a and + * later RTL. + */ + if (dwc->revision >= DWC3_REVISION_194A) { + while (--retries) { + reg = dwc3_readl(dwc->regs, DWC3_DSTS); + if (reg & DWC3_DSTS_DCNRD) + udelay(5); + else + break; + } + + if (retries <= 0) + return -ETIMEDOUT; + } + reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; @@ -107,7 +124,15 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state) reg |= DWC3_DCTL_ULSTCHNGREQ(state); dwc3_writel(dwc->regs, DWC3_DCTL, reg); + /* + * The following code is racy when called from dwc3_gadget_wakeup, + * and is not needed, at least on newer versions + */ + if (dwc->revision >= DWC3_REVISION_194A) + return 0; + /* wait for a change in DSTS */ + retries = 10000; while (--retries) { reg = dwc3_readl(dwc->regs, DWC3_DSTS); @@ -265,8 +290,8 @@ static const char *dwc3_gadget_ep_cmd_string(u8 cmd) return "Clear Stall"; case DWC3_DEPCMD_SETSTALL: return "Set Stall"; - case DWC3_DEPCMD_GETSEQNUMBER: - return "Get Data Sequence Number"; + case DWC3_DEPCMD_GETEPSTATE: + return "Get Endpoint State"; case DWC3_DEPCMD_SETTRANSFRESOURCE: return "Set Endpoint Transfer Resource"; case DWC3_DEPCMD_SETEPCONFIG: @@ -414,7 +439,7 @@ static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep, params.param0 = DWC3_DEPCFG_EP_TYPE(usb_endpoint_type(desc)) | DWC3_DEPCFG_MAX_PACKET_SIZE(usb_endpoint_maxp(desc)) - | DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst); + | DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst - 1); params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN | DWC3_DEPCFG_XFER_NOT_READY_EN; @@ -530,9 +555,37 @@ static void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep) { struct dwc3_request *req; - if (!list_empty(&dep->req_queued)) + if (!list_empty(&dep->req_queued)) { dwc3_stop_active_transfer(dwc, dep->number); + /* + * NOTICE: We are violating what the Databook says about the + * EndTransfer command. Ideally we would _always_ wait for the + * EndTransfer Command Completion IRQ, but that's causing too + * much trouble synchronizing between us and gadget driver. + * + * We have discussed this with the IP Provider and it was + * suggested to giveback all requests here, but give HW some + * extra time to synchronize with the interconnect. We're using + * an arbitraty 100us delay for that. + * + * Note also that a similar handling was tested by Synopsys + * (thanks a lot Paul) and nothing bad has come out of it. + * In short, what we're doing is: + * + * - Issue EndTransfer WITH CMDIOC bit set + * - Wait 100us + * - giveback all requests to gadget driver + */ + udelay(100); + + while (!list_empty(&dep->req_queued)) { + req = next_request(&dep->req_queued); + + dwc3_gadget_giveback(dep, req, -ESHUTDOWN); + } + } + while (!list_empty(&dep->request_list)) { req = next_request(&dep->request_list); @@ -741,8 +794,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, case USB_ENDPOINT_XFER_ISOC: trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST; - /* IOC every DWC3_TRB_NUM / 4 so we can refill */ - if (!(cur_slot % (DWC3_TRB_NUM / 4))) + if (!req->request.no_interrupt) trb->ctrl |= DWC3_TRB_CTRL_IOC; break; @@ -958,14 +1010,42 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param, dep->flags |= DWC3_EP_BUSY; if (start_new) { - dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc, + dep->resource_index = dwc3_gadget_ep_get_transfer_index(dwc, dep->number); - WARN_ON_ONCE(!dep->res_trans_idx); + WARN_ON_ONCE(!dep->resource_index); } return 0; } +static void __dwc3_gadget_start_isoc(struct dwc3 *dwc, + struct dwc3_ep *dep, u32 cur_uf) +{ + u32 uf; + + if (list_empty(&dep->request_list)) { + dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n", + dep->name); + return; + } + + /* 4 micro frames in the future */ + uf = cur_uf + dep->interval * 4; + + __dwc3_gadget_kick_transfer(dep, uf, 1); +} + +static void dwc3_gadget_start_isoc(struct dwc3 *dwc, + struct dwc3_ep *dep, const struct dwc3_event_depevt *event) +{ + u32 cur_uf, mask; + + mask = ~(dep->interval - 1); + cur_uf = event->parameters & mask; + + __dwc3_gadget_start_isoc(dwc, dep, cur_uf); +} + static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) { struct dwc3 *dwc = dep->dwc; @@ -995,11 +1075,8 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) list_add_tail(&req->list, &dep->request_list); - if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && (dep->flags & DWC3_EP_BUSY)) - dep->flags |= DWC3_EP_PENDING_REQUEST; - /* - * There are two special cases: + * There are a few special cases: * * 1. XferNotReady with empty list of requests. We need to kick the * transfer here in that situation, otherwise we will be NAKing @@ -1008,31 +1085,46 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) * able to receive the data until the next request is queued. * The following code is handling exactly that. * - * 2. XferInProgress on Isoc EP with an active transfer. We need to - * kick the transfer here after queuing a request, otherwise the - * core may not see the modified TRB(s). */ if (dep->flags & DWC3_EP_PENDING_REQUEST) { int ret; - int start_trans = 1; - u8 trans_idx = dep->res_trans_idx; - if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && - (dep->flags & DWC3_EP_BUSY)) { - start_trans = 0; - WARN_ON_ONCE(!trans_idx); - } else { - trans_idx = 0; + ret = __dwc3_gadget_kick_transfer(dep, 0, true); + if (ret && ret != -EBUSY) { + struct dwc3 *dwc = dep->dwc; + + dev_dbg(dwc->dev, "%s: failed to kick transfers\n", + dep->name); } + } - ret = __dwc3_gadget_kick_transfer(dep, trans_idx, start_trans); + /* + * 2. XferInProgress on Isoc EP with an active transfer. We need to + * kick the transfer here after queuing a request, otherwise the + * core may not see the modified TRB(s). + */ + if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && + (dep->flags & DWC3_EP_BUSY)) { + WARN_ON_ONCE(!dep->resource_index); + ret = __dwc3_gadget_kick_transfer(dep, dep->resource_index, + false); if (ret && ret != -EBUSY) { struct dwc3 *dwc = dep->dwc; dev_dbg(dwc->dev, "%s: failed to kick transfers\n", dep->name); } - }; + } + + /* + * 3. Missed ISOC Handling. We need to start isoc transfer on the saved + * uframe number. + */ + if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && + (dep->flags & DWC3_EP_MISSED_ISOC)) { + __dwc3_gadget_start_isoc(dwc, dep, dep->current_uf); + dep->flags &= ~DWC3_EP_MISSED_ISOC; + } return 0; } @@ -1118,15 +1210,6 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value) memset(¶ms, 0x00, sizeof(params)); if (value) { - if (dep->number == 0 || dep->number == 1) { - /* - * Whenever EP0 is stalled, we will restart - * the state machine, thus moving back to - * Setup Phase - */ - dwc->ep0state = EP0_SETUP_PHASE; - } - ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, DWC3_DEPCMD_SETSTALL, ¶ms); if (ret) @@ -1186,7 +1269,10 @@ static int dwc3_gadget_ep_set_wedge(struct usb_ep *ep) dep->flags |= DWC3_EP_WEDGE; spin_unlock_irqrestore(&dwc->lock, flags); - return dwc3_gadget_ep_set_halt(ep, 1); + if (dep->number == 0 || dep->number == 1) + return dwc3_gadget_ep0_set_halt(ep, 1); + else + return dwc3_gadget_ep_set_halt(ep, 1); } /* -------------------------------------------------------------------------- */ @@ -1204,7 +1290,7 @@ static const struct usb_ep_ops dwc3_gadget_ep0_ops = { .free_request = dwc3_gadget_ep_free_request, .queue = dwc3_gadget_ep0_queue, .dequeue = dwc3_gadget_ep_dequeue, - .set_halt = dwc3_gadget_ep_set_halt, + .set_halt = dwc3_gadget_ep0_set_halt, .set_wedge = dwc3_gadget_ep_set_wedge, }; @@ -1280,9 +1366,13 @@ static int dwc3_gadget_wakeup(struct usb_gadget *g) goto out; } - /* write zeroes to Link Change Request */ - reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; - dwc3_writel(dwc->regs, DWC3_DCTL, reg); + /* Recent versions do this automatically */ + if (dwc->revision < DWC3_REVISION_194A) { + /* write zeroes to Link Change Request */ + reg = dwc3_readl(dwc->regs, DWC3_DCTL); + reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; + dwc3_writel(dwc->regs, DWC3_DCTL, reg); + } /* poll until Link State changes to ON */ timeout = jiffies + msecs_to_jiffies(100); @@ -1319,16 +1409,21 @@ static int dwc3_gadget_set_selfpowered(struct usb_gadget *g, return 0; } -static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) +static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) { u32 reg; u32 timeout = 500; reg = dwc3_readl(dwc->regs, DWC3_DCTL); if (is_on) { - reg &= ~DWC3_DCTL_TRGTULST_MASK; - reg |= (DWC3_DCTL_RUN_STOP - | DWC3_DCTL_TRGTULST_RX_DET); + if (dwc->revision <= DWC3_REVISION_187A) { + reg &= ~DWC3_DCTL_TRGTULST_MASK; + reg |= DWC3_DCTL_TRGTULST_RX_DET; + } + + if (dwc->revision >= DWC3_REVISION_194A) + reg &= ~DWC3_DCTL_KEEP_CONNECT; + reg |= DWC3_DCTL_RUN_STOP; } else { reg &= ~DWC3_DCTL_RUN_STOP; } @@ -1346,7 +1441,7 @@ static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) } timeout--; if (!timeout) - break; + return -ETIMEDOUT; udelay(1); } while (1); @@ -1354,20 +1449,23 @@ static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) dwc->gadget_driver ? dwc->gadget_driver->function : "no-function", is_on ? "connect" : "disconnect"); + + return 0; } static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on) { struct dwc3 *dwc = gadget_to_dwc(g); unsigned long flags; + int ret; is_on = !!is_on; spin_lock_irqsave(&dwc->lock, flags); - dwc3_gadget_run_stop(dwc, is_on); + ret = dwc3_gadget_run_stop(dwc, is_on); spin_unlock_irqrestore(&dwc->lock, flags); - return 0; + return ret; } static int dwc3_gadget_start(struct usb_gadget *g, @@ -1468,6 +1566,7 @@ static int dwc3_gadget_stop(struct usb_gadget *g, return 0; } + static const struct usb_gadget_ops dwc3_gadget_ops = { .get_frame = dwc3_gadget_get_frame, .wakeup = dwc3_gadget_wakeup, @@ -1558,6 +1657,7 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, struct dwc3_trb *trb; unsigned int count; unsigned int s_pkt = 0; + unsigned int trb_status; do { req = next_request(&dep->req_queued); @@ -1583,9 +1683,18 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, if (dep->direction) { if (count) { - dev_err(dwc->dev, "incomplete IN transfer %s\n", - dep->name); - status = -ECONNRESET; + trb_status = DWC3_TRB_SIZE_TRBSTS(trb->size); + if (trb_status == DWC3_TRBSTS_MISSED_ISOC) { + dev_dbg(dwc->dev, "incomplete IN transfer %s\n", + dep->name); + dep->current_uf = event->parameters & + ~(dep->interval - 1); + dep->flags |= DWC3_EP_MISSED_ISOC; + } else { + dev_err(dwc->dev, "incomplete IN transfer %s\n", + dep->name); + status = -ECONNRESET; + } } } else { if (count && (event->status & DEPEVT_STATUS_SHORT)) @@ -1604,7 +1713,8 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, if (s_pkt) break; if ((event->status & DEPEVT_STATUS_LST) && - (trb->ctrl & DWC3_TRB_CTRL_LST)) + (trb->ctrl & (DWC3_TRB_CTRL_LST | + DWC3_TRB_CTRL_HWO))) break; if ((event->status & DEPEVT_STATUS_IOC) && (trb->ctrl & DWC3_TRB_CTRL_IOC)) @@ -1657,65 +1767,6 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc, } } -static void dwc3_gadget_start_isoc(struct dwc3 *dwc, - struct dwc3_ep *dep, const struct dwc3_event_depevt *event) -{ - u32 uf, mask; - - if (list_empty(&dep->request_list)) { - dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n", - dep->name); - return; - } - - mask = ~(dep->interval - 1); - uf = event->parameters & mask; - /* 4 micro frames in the future */ - uf += dep->interval * 4; - - __dwc3_gadget_kick_transfer(dep, uf, 1); -} - -static void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep, - const struct dwc3_event_depevt *event) -{ - struct dwc3 *dwc = dep->dwc; - struct dwc3_event_depevt mod_ev = *event; - - /* - * We were asked to remove one request. It is possible that this - * request and a few others were started together and have the same - * transfer index. Since we stopped the complete endpoint we don't - * know how many requests were already completed (and not yet) - * reported and how could be done (later). We purge them all until - * the end of the list. - */ - mod_ev.status = DEPEVT_STATUS_LST; - dwc3_cleanup_done_reqs(dwc, dep, &mod_ev, -ESHUTDOWN); - dep->flags &= ~DWC3_EP_BUSY; - /* pending requests are ignored and are queued on XferNotReady */ -} - -static void dwc3_ep_cmd_compl(struct dwc3_ep *dep, - const struct dwc3_event_depevt *event) -{ - u32 param = event->parameters; - u32 cmd_type = (param >> 8) & ((1 << 5) - 1); - - switch (cmd_type) { - case DWC3_DEPCMD_ENDTRANSFER: - dwc3_process_ep_cmd_complete(dep, event); - break; - case DWC3_DEPCMD_STARTTRANSFER: - dep->res_trans_idx = param & 0x7f; - break; - default: - printk(KERN_ERR "%s() unknown /unexpected type: %d\n", - __func__, cmd_type); - break; - }; -} - static void dwc3_endpoint_interrupt(struct dwc3 *dwc, const struct dwc3_event_depevt *event) { @@ -1724,6 +1775,9 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, dep = dwc->eps[epnum]; + if (!(dep->flags & DWC3_EP_ENABLED)) + return; + dev_vdbg(dwc->dev, "%s: %s\n", dep->name, dwc3_ep_event_string(event->endpoint_event)); @@ -1734,7 +1788,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, switch (event->endpoint_event) { case DWC3_DEPEVT_XFERCOMPLETE: - dep->res_trans_idx = 0; + dep->resource_index = 0; if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n", @@ -1797,7 +1851,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, dev_dbg(dwc->dev, "%s FIFO Overrun\n", dep->name); break; case DWC3_DEPEVT_EPCMDCMPLT: - dwc3_ep_cmd_compl(dep, event); + dev_vdbg(dwc->dev, "Endpoint Command Complete\n"); break; } } @@ -1820,16 +1874,16 @@ static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum) dep = dwc->eps[epnum]; - WARN_ON(!dep->res_trans_idx); - if (dep->res_trans_idx) { - cmd = DWC3_DEPCMD_ENDTRANSFER; - cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC; - cmd |= DWC3_DEPCMD_PARAM(dep->res_trans_idx); - memset(¶ms, 0, sizeof(params)); - ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); - WARN_ON_ONCE(ret); - dep->res_trans_idx = 0; - } + if (!dep->resource_index) + return; + + cmd = DWC3_DEPCMD_ENDTRANSFER; + cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC; + cmd |= DWC3_DEPCMD_PARAM(dep->resource_index); + memset(¶ms, 0, sizeof(params)); + ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); + WARN_ON_ONCE(ret); + dep->resource_index = 0; } static void dwc3_stop_active_transfers(struct dwc3 *dwc) @@ -1872,11 +1926,9 @@ static void dwc3_clear_stall_all_ep(struct dwc3 *dwc) static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) { + int reg; + dev_vdbg(dwc->dev, "%s\n", __func__); -#if 0 - XXX - U1/U2 is powersave optimization. Skip it for now. Anyway we need to - enable it before we can disable it. reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg &= ~DWC3_DCTL_INITU1ENA; @@ -1884,9 +1936,7 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) reg &= ~DWC3_DCTL_INITU2ENA; dwc3_writel(dwc->regs, DWC3_DCTL, reg); -#endif - dwc3_stop_active_transfers(dwc); dwc3_disconnect_gadget(dwc); dwc->start_config_issued = false; @@ -1894,30 +1944,30 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) dwc->setup_packet_pending = false; } -static void dwc3_gadget_usb3_phy_power(struct dwc3 *dwc, int on) +static void dwc3_gadget_usb3_phy_suspend(struct dwc3 *dwc, int suspend) { u32 reg; reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); - if (on) - reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; - else + if (suspend) reg |= DWC3_GUSB3PIPECTL_SUSPHY; + else + reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); } -static void dwc3_gadget_usb2_phy_power(struct dwc3 *dwc, int on) +static void dwc3_gadget_usb2_phy_suspend(struct dwc3 *dwc, int suspend) { u32 reg; reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); - if (on) - reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; - else + if (suspend) reg |= DWC3_GUSB2PHYCFG_SUSPHY; + else + reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); } @@ -1962,16 +2012,18 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc) /* after reset -> Default State */ dwc->dev_state = DWC3_DEFAULT_STATE; - /* Enable PHYs */ - dwc3_gadget_usb2_phy_power(dwc, true); - dwc3_gadget_usb3_phy_power(dwc, true); + /* Recent versions support automatic phy suspend and don't need this */ + if (dwc->revision < DWC3_REVISION_194A) { + /* Resume PHYs */ + dwc3_gadget_usb2_phy_suspend(dwc, false); + dwc3_gadget_usb3_phy_suspend(dwc, false); + } if (dwc->gadget.speed != USB_SPEED_UNKNOWN) dwc3_disconnect_gadget(dwc); reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg &= ~DWC3_DCTL_TSTCTRL_MASK; - reg &= ~(DWC3_DCTL_INITU1ENA | DWC3_DCTL_INITU2ENA); dwc3_writel(dwc->regs, DWC3_DCTL, reg); dwc->test_mode = false; @@ -2010,16 +2062,16 @@ static void dwc3_update_ram_clk_sel(struct dwc3 *dwc, u32 speed) dwc3_writel(dwc->regs, DWC3_GCTL, reg); } -static void dwc3_gadget_disable_phy(struct dwc3 *dwc, u8 speed) +static void dwc3_gadget_phy_suspend(struct dwc3 *dwc, u8 speed) { switch (speed) { case USB_SPEED_SUPER: - dwc3_gadget_usb2_phy_power(dwc, false); + dwc3_gadget_usb2_phy_suspend(dwc, true); break; case USB_SPEED_HIGH: case USB_SPEED_FULL: case USB_SPEED_LOW: - dwc3_gadget_usb3_phy_power(dwc, false); + dwc3_gadget_usb3_phy_suspend(dwc, true); break; } } @@ -2082,8 +2134,11 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) break; } - /* Disable unneded PHY */ - dwc3_gadget_disable_phy(dwc, dwc->gadget.speed); + /* Recent versions support automatic phy suspend and don't need this */ + if (dwc->revision < DWC3_REVISION_194A) { + /* Suspend unneeded PHY */ + dwc3_gadget_phy_suspend(dwc, dwc->gadget.speed); + } dep = dwc->eps[0]; ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); @@ -2373,10 +2428,6 @@ int __devinit dwc3_gadget_init(struct dwc3 *dwc) reg |= DWC3_DCFG_LPM_CAP; dwc3_writel(dwc->regs, DWC3_DCFG, reg); - reg = dwc3_readl(dwc->regs, DWC3_DCTL); - reg |= DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA; - dwc3_writel(dwc->regs, DWC3_DCTL, reg); - /* Enable all but Start and End of Frame IRQs */ reg = (DWC3_DEVTEN_VNDRDEVTSTRCVEDEN | DWC3_DEVTEN_EVNTOVERFLOWEN | @@ -2389,6 +2440,24 @@ int __devinit dwc3_gadget_init(struct dwc3 *dwc) DWC3_DEVTEN_DISCONNEVTEN); dwc3_writel(dwc->regs, DWC3_DEVTEN, reg); + /* Enable USB2 LPM and automatic phy suspend only on recent versions */ + if (dwc->revision >= DWC3_REVISION_194A) { + reg = dwc3_readl(dwc->regs, DWC3_DCFG); + reg |= DWC3_DCFG_LPM_CAP; + dwc3_writel(dwc->regs, DWC3_DCFG, reg); + + reg = dwc3_readl(dwc->regs, DWC3_DCTL); + reg &= ~(DWC3_DCTL_HIRD_THRES_MASK | DWC3_DCTL_L1_HIBER_EN); + + /* TODO: This should be configurable */ + reg |= DWC3_DCTL_HIRD_THRES(28); + + dwc3_writel(dwc->regs, DWC3_DCTL, reg); + + dwc3_gadget_usb2_phy_suspend(dwc, false); + dwc3_gadget_usb3_phy_suspend(dwc, false); + } + ret = device_register(&dwc->gadget.dev); if (ret) { dev_err(dwc->dev, "failed to register gadget device\n"); diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index 95ef6a2f7764..99e6d7248820 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -66,7 +66,12 @@ struct dwc3; #define DWC3_DEPCFG_FIFO_NUMBER(n) ((n) << 17) #define DWC3_DEPCFG_BURST_SIZE(n) ((n) << 22) #define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26) +/* This applies for core versions earlier than 1.94a */ #define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31) +/* These apply for core versions 1.94a and later */ +#define DWC3_DEPCFG_ACTION_INIT (0 << 30) +#define DWC3_DEPCFG_ACTION_RESTORE (1 << 30) +#define DWC3_DEPCFG_ACTION_MODIFY (2 << 30) /* DEPXFERCFG parameter 0 */ #define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff) @@ -106,6 +111,7 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state); void dwc3_ep0_interrupt(struct dwc3 *dwc, const struct dwc3_event_depevt *event); void dwc3_ep0_out_start(struct dwc3 *dwc); +int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value); int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, gfp_t gfp_flags); int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value); diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c index 1fc8f1249806..ee0ebacf8227 100644 --- a/drivers/usb/early/ehci-dbgp.c +++ b/drivers/usb/early/ehci-dbgp.c @@ -334,7 +334,7 @@ static int dbgp_control_msg(unsigned devnum, int requesttype, int ret; read = (requesttype & USB_DIR_IN) != 0; - if (size > (read ? DBGP_MAX_PACKET:0)) + if (size > (read ? DBGP_MAX_PACKET : 0)) return -1; /* Compute the control message */ diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 271ca161d7ef..51ab5fd5d468 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -321,6 +321,15 @@ config USB_MV_UDC USB2.0 OTG controller, which can be configured as high speed or full speed USB peripheral. +config USB_MV_U3D + tristate "MARVELL PXA2128 USB 3.0 controller" + depends on CPU_MMP3 + select USB_GADGET_DUALSPEED + select USB_GADGET_SUPERSPEED + help + MARVELL PXA2128 Processor series include a super speed USB3.0 device + controller, which support super speed USB peripheral. + # # Controllers available in both integrated and discrete versions # diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 1811513f1c27..3fd8cd09d2c1 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -29,6 +29,7 @@ obj-$(CONFIG_USB_EG20T) += pch_udc.o obj-$(CONFIG_USB_MV_UDC) += mv_udc.o mv_udc-y := mv_udc_core.o obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o +obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o # # USB gadget drivers diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index fdb7aec3bd0c..75b8a691fd00 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -235,6 +235,7 @@ static int __exit acm_ms_unbind(struct usb_composite_dev *cdev) static struct usb_composite_driver acm_ms_driver = { .name = "g_acm_ms", .dev = &device_desc, + .max_speed = USB_SPEED_SUPER, .strings = dev_strings, .unbind = __exit_p(acm_ms_unbind), }; diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 1a4430f315c3..c9e66dfb02e6 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1634,6 +1634,7 @@ static int at91_start(struct usb_gadget *gadget, udc = container_of(gadget, struct at91_udc, gadget); udc->driver = driver; udc->gadget.dev.driver = &driver->driver; + udc->gadget.dev.of_node = udc->pdev->dev.of_node; dev_set_drvdata(&udc->gadget.dev, &driver->driver); udc->enabled = 1; udc->selfpowered = 1; diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 390749bbb0c3..3f72110da1b0 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -117,6 +117,7 @@ int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f, struct usb_ep *_ep) { + struct usb_composite_dev *cdev = get_gadget_data(g); struct usb_endpoint_descriptor *chosen_desc = NULL; struct usb_descriptor_header **speed_desc = NULL; @@ -180,10 +181,12 @@ ep_found: _ep->mult = comp_desc->bmAttributes & 0x3; case USB_ENDPOINT_XFER_BULK: case USB_ENDPOINT_XFER_INT: - _ep->maxburst = comp_desc->bMaxBurst; + _ep->maxburst = comp_desc->bMaxBurst + 1; break; default: - /* Do nothing for control endpoints */ + if (comp_desc->bMaxBurst != 0) + ERROR(cdev, "ep0 bMaxBurst must be 0\n"); + _ep->maxburst = 1; break; } } diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index dcd1c7fbb016..8adc79d1b402 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -21,6 +21,7 @@ #include <linux/blkdev.h> #include <linux/pagemap.h> #include <linux/export.h> +#include <linux/hid.h> #include <asm/unaligned.h> #include <linux/usb/composite.h> @@ -1671,6 +1672,12 @@ static int __must_check ffs_do_desc(char *data, unsigned len, } break; + case HID_DT_HID: + pr_vdebug("hid descriptor\n"); + if (length != sizeof(struct hid_descriptor)) + goto inv_length; + break; + case USB_DT_OTG: if (length != sizeof(struct usb_otg_descriptor)) goto inv_length; diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c index 3b3932c55361..16a8b1c15c62 100644 --- a/drivers/usb/gadget/f_hid.c +++ b/drivers/usb/gadget/f_hid.c @@ -26,6 +26,12 @@ static struct class *hidg_class; /*-------------------------------------------------------------------------*/ /* HID gadget struct */ +struct f_hidg_req_list { + struct usb_request *req; + unsigned int pos; + struct list_head list; +}; + struct f_hidg { /* configuration */ unsigned char bInterfaceSubClass; @@ -35,10 +41,10 @@ struct f_hidg { unsigned short report_length; /* recv report */ - char *set_report_buff; - unsigned short set_report_length; + struct list_head completed_out_req; spinlock_t spinlock; wait_queue_head_t read_queue; + unsigned int qlen; /* send report */ struct mutex lock; @@ -49,7 +55,9 @@ struct f_hidg { int minor; struct cdev cdev; struct usb_function func; + struct usb_ep *in_ep; + struct usb_ep *out_ep; }; static inline struct f_hidg *func_to_hidg(struct usb_function *f) @@ -65,7 +73,7 @@ static struct usb_interface_descriptor hidg_interface_desc = { .bDescriptorType = USB_DT_INTERFACE, /* .bInterfaceNumber = DYNAMIC */ .bAlternateSetting = 0, - .bNumEndpoints = 1, + .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_HID, /* .bInterfaceSubClass = DYNAMIC */ /* .bInterfaceProtocol = DYNAMIC */ @@ -96,10 +104,23 @@ static struct usb_endpoint_descriptor hidg_hs_in_ep_desc = { */ }; +static struct usb_endpoint_descriptor hidg_hs_out_ep_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_INT, + /*.wMaxPacketSize = DYNAMIC */ + .bInterval = 4, /* FIXME: Add this field in the + * HID gadget configuration? + * (struct hidg_func_descriptor) + */ +}; + static struct usb_descriptor_header *hidg_hs_descriptors[] = { (struct usb_descriptor_header *)&hidg_interface_desc, (struct usb_descriptor_header *)&hidg_desc, (struct usb_descriptor_header *)&hidg_hs_in_ep_desc, + (struct usb_descriptor_header *)&hidg_hs_out_ep_desc, NULL, }; @@ -117,10 +138,23 @@ static struct usb_endpoint_descriptor hidg_fs_in_ep_desc = { */ }; +static struct usb_endpoint_descriptor hidg_fs_out_ep_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_INT, + /*.wMaxPacketSize = DYNAMIC */ + .bInterval = 10, /* FIXME: Add this field in the + * HID gadget configuration? + * (struct hidg_func_descriptor) + */ +}; + static struct usb_descriptor_header *hidg_fs_descriptors[] = { (struct usb_descriptor_header *)&hidg_interface_desc, (struct usb_descriptor_header *)&hidg_desc, (struct usb_descriptor_header *)&hidg_fs_in_ep_desc, + (struct usb_descriptor_header *)&hidg_fs_out_ep_desc, NULL, }; @@ -130,9 +164,11 @@ static struct usb_descriptor_header *hidg_fs_descriptors[] = { static ssize_t f_hidg_read(struct file *file, char __user *buffer, size_t count, loff_t *ptr) { - struct f_hidg *hidg = file->private_data; - char *tmp_buff = NULL; - unsigned long flags; + struct f_hidg *hidg = file->private_data; + struct f_hidg_req_list *list; + struct usb_request *req; + unsigned long flags; + int ret; if (!count) return 0; @@ -142,8 +178,9 @@ static ssize_t f_hidg_read(struct file *file, char __user *buffer, spin_lock_irqsave(&hidg->spinlock, flags); -#define READ_COND (hidg->set_report_buff != NULL) +#define READ_COND (!list_empty(&hidg->completed_out_req)) + /* wait for at least one buffer to complete */ while (!READ_COND) { spin_unlock_irqrestore(&hidg->spinlock, flags); if (file->f_flags & O_NONBLOCK) @@ -155,19 +192,34 @@ static ssize_t f_hidg_read(struct file *file, char __user *buffer, spin_lock_irqsave(&hidg->spinlock, flags); } - - count = min_t(unsigned, count, hidg->set_report_length); - tmp_buff = hidg->set_report_buff; - hidg->set_report_buff = NULL; - + /* pick the first one */ + list = list_first_entry(&hidg->completed_out_req, + struct f_hidg_req_list, list); + req = list->req; + count = min_t(unsigned int, count, req->actual - list->pos); spin_unlock_irqrestore(&hidg->spinlock, flags); - if (tmp_buff != NULL) { - /* copy to user outside spinlock */ - count -= copy_to_user(buffer, tmp_buff, count); - kfree(tmp_buff); - } else - count = -ENOMEM; + /* copy to user outside spinlock */ + count -= copy_to_user(buffer, req->buf + list->pos, count); + list->pos += count; + + /* + * if this request is completely handled and transfered to + * userspace, remove its entry from the list and requeue it + * again. Otherwise, we will revisit it again upon the next + * call, taking into account its current read position. + */ + if (list->pos == req->actual) { + spin_lock_irqsave(&hidg->spinlock, flags); + list_del(&list->list); + kfree(list); + spin_unlock_irqrestore(&hidg->spinlock, flags); + + req->length = hidg->report_length; + ret = usb_ep_queue(hidg->out_ep, req, GFP_KERNEL); + if (ret < 0) + return ret; + } return count; } @@ -282,28 +334,37 @@ static int f_hidg_open(struct inode *inode, struct file *fd) /*-------------------------------------------------------------------------*/ /* usb_function */ -static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req) +static struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep, unsigned length) { - struct f_hidg *hidg = (struct f_hidg *)req->context; - - if (req->status != 0 || req->buf == NULL || req->actual == 0) { - ERROR(hidg->func.config->cdev, "%s FAILED\n", __func__); - return; + struct usb_request *req; + + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (req) { + req->length = length; + req->buf = kmalloc(length, GFP_ATOMIC); + if (!req->buf) { + usb_ep_free_request(ep, req); + req = NULL; + } } + return req; +} - spin_lock(&hidg->spinlock); - - hidg->set_report_buff = krealloc(hidg->set_report_buff, - req->actual, GFP_ATOMIC); +static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_hidg *hidg = (struct f_hidg *) req->context; + struct f_hidg_req_list *req_list; + unsigned long flags; - if (hidg->set_report_buff == NULL) { - spin_unlock(&hidg->spinlock); + req_list = kzalloc(sizeof(*req_list), GFP_ATOMIC); + if (!req_list) return; - } - hidg->set_report_length = req->actual; - memcpy(hidg->set_report_buff, req->buf, req->actual); - spin_unlock(&hidg->spinlock); + req_list->req = req; + + spin_lock_irqsave(&hidg->spinlock, flags); + list_add_tail(&req_list->list, &hidg->completed_out_req); + spin_unlock_irqrestore(&hidg->spinlock, flags); wake_up(&hidg->read_queue); } @@ -344,9 +405,7 @@ static int hidg_setup(struct usb_function *f, case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 | HID_REQ_SET_REPORT): VDBG(cdev, "set_report | wLenght=%d\n", ctrl->wLength); - req->context = hidg; - req->complete = hidg_set_report_complete; - goto respond; + goto stall; break; case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 @@ -403,16 +462,25 @@ respond: static void hidg_disable(struct usb_function *f) { struct f_hidg *hidg = func_to_hidg(f); + struct f_hidg_req_list *list, *next; usb_ep_disable(hidg->in_ep); hidg->in_ep->driver_data = NULL; + + usb_ep_disable(hidg->out_ep); + hidg->out_ep->driver_data = NULL; + + list_for_each_entry_safe(list, next, &hidg->completed_out_req, list) { + list_del(&list->list); + kfree(list); + } } static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) { struct usb_composite_dev *cdev = f->config->cdev; struct f_hidg *hidg = func_to_hidg(f); - int status = 0; + int i, status = 0; VDBG(cdev, "hidg_set_alt intf:%d alt:%d\n", intf, alt); @@ -429,11 +497,55 @@ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) } status = usb_ep_enable(hidg->in_ep); if (status < 0) { - ERROR(cdev, "Enable endpoint FAILED!\n"); + ERROR(cdev, "Enable IN endpoint FAILED!\n"); goto fail; } hidg->in_ep->driver_data = hidg; } + + + if (hidg->out_ep != NULL) { + /* restart endpoint */ + if (hidg->out_ep->driver_data != NULL) + usb_ep_disable(hidg->out_ep); + + status = config_ep_by_speed(f->config->cdev->gadget, f, + hidg->out_ep); + if (status) { + ERROR(cdev, "config_ep_by_speed FAILED!\n"); + goto fail; + } + status = usb_ep_enable(hidg->out_ep); + if (status < 0) { + ERROR(cdev, "Enable IN endpoint FAILED!\n"); + goto fail; + } + hidg->out_ep->driver_data = hidg; + + /* + * allocate a bunch of read buffers and queue them all at once. + */ + for (i = 0; i < hidg->qlen && status == 0; i++) { + struct usb_request *req = + hidg_alloc_ep_req(hidg->out_ep, + hidg->report_length); + if (req) { + req->complete = hidg_set_report_complete; + req->context = hidg; + status = usb_ep_queue(hidg->out_ep, req, + GFP_ATOMIC); + if (status) + ERROR(cdev, "%s queue req --> %d\n", + hidg->out_ep->name, status); + } else { + usb_ep_disable(hidg->out_ep); + hidg->out_ep->driver_data = NULL; + status = -ENOMEM; + goto fail; + } + } + } + fail: return status; } @@ -470,13 +582,18 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f) ep->driver_data = c->cdev; /* claim */ hidg->in_ep = ep; + ep = usb_ep_autoconfig(c->cdev->gadget, &hidg_fs_out_ep_desc); + if (!ep) + goto fail; + ep->driver_data = c->cdev; /* claim */ + hidg->out_ep = ep; + /* preallocate request and buffer */ status = -ENOMEM; hidg->req = usb_ep_alloc_request(hidg->in_ep, GFP_KERNEL); if (!hidg->req) goto fail; - hidg->req->buf = kmalloc(hidg->report_length, GFP_KERNEL); if (!hidg->req->buf) goto fail; @@ -486,12 +603,12 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f) hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol; hidg_hs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); hidg_fs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); + hidg_hs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); + hidg_fs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); hidg_desc.desc[0].bDescriptorType = HID_DT_REPORT; hidg_desc.desc[0].wDescriptorLength = cpu_to_le16(hidg->report_desc_length); - hidg->set_report_buff = NULL; - /* copy descriptors */ f->descriptors = usb_copy_descriptors(hidg_fs_descriptors); if (!f->descriptors) @@ -500,6 +617,8 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f) if (gadget_is_dualspeed(c->cdev->gadget)) { hidg_hs_in_ep_desc.bEndpointAddress = hidg_fs_in_ep_desc.bEndpointAddress; + hidg_hs_out_ep_desc.bEndpointAddress = + hidg_fs_out_ep_desc.bEndpointAddress; f->hs_descriptors = usb_copy_descriptors(hidg_hs_descriptors); if (!f->hs_descriptors) goto fail; @@ -509,6 +628,7 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f) spin_lock_init(&hidg->spinlock); init_waitqueue_head(&hidg->write_queue); init_waitqueue_head(&hidg->read_queue); + INIT_LIST_HEAD(&hidg->completed_out_req); /* create char device */ cdev_init(&hidg->cdev, &f_hidg_fops); @@ -553,7 +673,6 @@ static void hidg_unbind(struct usb_configuration *c, struct usb_function *f) usb_free_descriptors(f->descriptors); kfree(hidg->report_desc); - kfree(hidg->set_report_buff); kfree(hidg); } @@ -624,6 +743,9 @@ int __init hidg_bind_config(struct usb_configuration *c, hidg->func.disable = hidg_disable; hidg->func.setup = hidg_setup; + /* this could me made configurable at some point */ + hidg->qlen = 4; + status = usb_add_function(c, &hidg->func); if (status) kfree(hidg); diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index f67b453740bd..4f1142efa6d1 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -44,12 +44,12 @@ * function for a USB device, it also illustrates a technique of * double-buffering for increased throughput. * - * Function supports multiple logical units (LUNs). Backing storage - * for each LUN is provided by a regular file or a block device. - * Access for each LUN can be limited to read-only. Moreover, the - * function can indicate that LUN is removable and/or CD-ROM. (The - * later implies read-only access.) - * + * For more information about MSF and in particular its module + * parameters and sysfs interface read the + * <Documentation/usb/mass-storage.txt> file. + */ + +/* * MSF is configured by specifying a fsg_config structure. It has the * following fields: * @@ -75,25 +75,6 @@ * ->nofua Flag specifying that FUA flag in SCSI WRITE(10,12) * commands for this LUN shall be ignored. * - * lun_name_format A printf-like format for names of the LUN - * devices. This determines how the - * directory in sysfs will be named. - * Unless you are using several MSFs in - * a single gadget (as opposed to single - * MSF in many configurations) you may - * leave it as NULL (in which case - * "lun%d" will be used). In the format - * you can use "%d" to index LUNs for - * MSF's with more than one LUN. (Beware - * that there is only one integer given - * as an argument for the format and - * specifying invalid format may cause - * unspecified behaviour.) - * thread_name Name of the kernel thread process used by the - * MSF. You can safely set it to NULL - * (in which case default "file-storage" - * will be used). - * * vendor_name * product_name * release Information used as a reply to INQUIRY @@ -114,62 +95,6 @@ * data track and no audio tracks; hence there need be only one * backing file per LUN. * - * - * MSF includes support for module parameters. If gadget using it - * decides to use it, the following module parameters will be - * available: - * - * file=filename[,filename...] - * Names of the files or block devices used for - * backing storage. - * ro=b[,b...] Default false, boolean for read-only access. - * removable=b[,b...] - * Default true, boolean for removable media. - * cdrom=b[,b...] Default false, boolean for whether to emulate - * a CD-ROM drive. - * nofua=b[,b...] Default false, booleans for ignore FUA flag - * in SCSI WRITE(10,12) commands - * luns=N Default N = number of filenames, number of - * LUNs to support. - * stall Default determined according to the type of - * USB device controller (usually true), - * boolean to permit the driver to halt - * bulk endpoints. - * - * The module parameters may be prefixed with some string. You need - * to consult gadget's documentation or source to verify whether it is - * using those module parameters and if it does what are the prefixes - * (look for FSG_MODULE_PARAMETERS() macro usage, what's inside it is - * the prefix). - * - * - * Requirements are modest; only a bulk-in and a bulk-out endpoint are - * needed. The memory requirement amounts to two 16K buffers, size - * configurable by a parameter. Support is included for both - * full-speed and high-speed operation. - * - * Note that the driver is slightly non-portable in that it assumes a - * single memory/DMA buffer will be useable for bulk-in, bulk-out, and - * interrupt-in endpoints. With most device controllers this isn't an - * issue, but there may be some with hardware restrictions that prevent - * a buffer from being used by more than one endpoint. - * - * - * The pathnames of the backing files and the ro settings are - * available in the attribute files "file" and "ro" in the lun<n> (or - * to be more precise in a directory which name comes from - * "lun_name_format" option!) subdirectory of the gadget's sysfs - * directory. If the "removable" option is set, writing to these - * files will simulate ejecting/loading the medium (writing an empty - * line means eject) and adjusting a write-enable tab. Changes to the - * ro setting are not allowed when the medium is loaded or if CD-ROM - * emulation is being used. - * - * When a LUN receive an "eject" SCSI request (Start/Stop Unit), - * if the LUN is removable, the backing file is released to simulate - * ejection. - * - * * This function is heavily based on "File-backed Storage Gadget" by * Alan Stern which in turn is heavily based on "Gadget Zero" by David * Brownell. The driver's SCSI command interface was based on the @@ -211,7 +136,7 @@ * In normal operation the main thread is started during the gadget's * fsg_bind() callback and stopped during fsg_unbind(). But it can * also exit when it receives a signal, and there's no point leaving - * the gadget running when the thread is dead. At of this moment, MSF + * the gadget running when the thread is dead. As of this moment, MSF * provides no way to deregister the gadget when thread dies -- maybe * a callback functions is needed. * @@ -417,9 +342,6 @@ struct fsg_config { char nofua; } luns[FSG_MAX_LUNS]; - const char *lun_name_format; - const char *thread_name; - /* Callback functions. */ const struct fsg_operations *ops; /* Gadget's private data. */ @@ -2687,11 +2609,15 @@ static int fsg_main_thread(void *common_) /*************************** DEVICE ATTRIBUTES ***************************/ -/* Write permission is checked per LUN in store_*() functions. */ static DEVICE_ATTR(ro, 0644, fsg_show_ro, fsg_store_ro); static DEVICE_ATTR(nofua, 0644, fsg_show_nofua, fsg_store_nofua); static DEVICE_ATTR(file, 0644, fsg_show_file, fsg_store_file); +static struct device_attribute dev_attr_ro_cdrom = + __ATTR(ro, 0444, fsg_show_ro, NULL); +static struct device_attribute dev_attr_file_nonremovable = + __ATTR(file, 0444, fsg_show_file, NULL); + /****************************** FSG COMMON ******************************/ @@ -2792,11 +2718,7 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common, curlun->dev.parent = &gadget->dev; /* curlun->dev.driver = &fsg_driver.driver; XXX */ dev_set_drvdata(&curlun->dev, &common->filesem); - dev_set_name(&curlun->dev, - cfg->lun_name_format - ? cfg->lun_name_format - : "lun%d", - i); + dev_set_name(&curlun->dev, "lun%d", i); rc = device_register(&curlun->dev); if (rc) { @@ -2806,10 +2728,16 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common, goto error_release; } - rc = device_create_file(&curlun->dev, &dev_attr_ro); + rc = device_create_file(&curlun->dev, + curlun->cdrom + ? &dev_attr_ro_cdrom + : &dev_attr_ro); if (rc) goto error_luns; - rc = device_create_file(&curlun->dev, &dev_attr_file); + rc = device_create_file(&curlun->dev, + curlun->removable + ? &dev_attr_file + : &dev_attr_file_nonremovable); if (rc) goto error_luns; rc = device_create_file(&curlun->dev, &dev_attr_nofua); @@ -2878,8 +2806,7 @@ buffhds_first_it: /* Tell the thread to start working */ common->thread_task = - kthread_create(fsg_main_thread, common, - cfg->thread_name ?: "file-storage"); + kthread_create(fsg_main_thread, common, "file-storage"); if (IS_ERR(common->thread_task)) { rc = PTR_ERR(common->thread_task); goto error_release; @@ -2945,8 +2872,14 @@ static void fsg_common_release(struct kref *ref) /* In error recovery common->nluns may be zero. */ for (; i; --i, ++lun) { device_remove_file(&lun->dev, &dev_attr_nofua); - device_remove_file(&lun->dev, &dev_attr_ro); - device_remove_file(&lun->dev, &dev_attr_file); + device_remove_file(&lun->dev, + lun->cdrom + ? &dev_attr_ro_cdrom + : &dev_attr_ro); + device_remove_file(&lun->dev, + lun->removable + ? &dev_attr_file + : &dev_attr_file_nonremovable); fsg_lun_close(lun); device_unregister(&lun->dev); } @@ -3167,8 +3100,7 @@ fsg_config_from_params(struct fsg_config *cfg, for (i = 0, lun = cfg->luns; i < cfg->nluns; ++i, ++lun) { lun->ro = !!params->ro[i]; lun->cdrom = !!params->cdrom[i]; - lun->removable = /* Removable by default */ - params->removable_count <= i || params->removable[i]; + lun->removable = !!params->removable[i]; lun->filename = params->file_count > i && params->file[i][0] ? params->file[i] @@ -3176,8 +3108,6 @@ fsg_config_from_params(struct fsg_config *cfg, } /* Let MSF use defaults */ - cfg->lun_name_format = 0; - cfg->thread_name = 0; cfg->vendor_name = 0; cfg->product_name = 0; cfg->release = 0xffff; @@ -3203,4 +3133,3 @@ fsg_common_from_params(struct fsg_common *common, fsg_config_from_params(&cfg, params); return fsg_common_init(common, cdev, &cfg); } - diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c index 2022fe492148..2a8bf0655c60 100644 --- a/drivers/usb/gadget/f_uvc.c +++ b/drivers/usb/gadget/f_uvc.c @@ -29,6 +29,25 @@ unsigned int uvc_gadget_trace_param; +/*-------------------------------------------------------------------------*/ + +/* module parameters specific to the Video streaming endpoint */ +static unsigned streaming_interval = 1; +module_param(streaming_interval, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(streaming_interval, "1 - 16"); + +static unsigned streaming_maxpacket = 1024; +module_param(streaming_maxpacket, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(streaming_maxpacket, "0 - 1023 (fs), 0 - 1024 (hs/ss)"); + +static unsigned streaming_mult; +module_param(streaming_mult, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(streaming_mult, "0 - 2 (hs/ss only)"); + +static unsigned streaming_maxburst; +module_param(streaming_maxburst, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(streaming_maxburst, "0 - 15 (ss only)"); + /* -------------------------------------------------------------------------- * Function descriptors */ @@ -59,6 +78,8 @@ static struct usb_gadget_strings *uvc_function_strings[] = { #define UVC_INTF_VIDEO_CONTROL 0 #define UVC_INTF_VIDEO_STREAMING 1 +#define STATUS_BYTECOUNT 16 /* 16 bytes status */ + static struct usb_interface_assoc_descriptor uvc_iad __initdata = { .bLength = sizeof(uvc_iad), .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, @@ -82,12 +103,12 @@ static struct usb_interface_descriptor uvc_control_intf __initdata = { .iInterface = 0, }; -static struct usb_endpoint_descriptor uvc_control_ep __initdata = { +static struct usb_endpoint_descriptor uvc_fs_control_ep __initdata = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = cpu_to_le16(16), + .wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT), .bInterval = 8, }; @@ -95,7 +116,7 @@ static struct uvc_control_endpoint_descriptor uvc_control_cs_ep __initdata = { .bLength = UVC_DT_CONTROL_ENDPOINT_SIZE, .bDescriptorType = USB_DT_CS_ENDPOINT, .bDescriptorSubType = UVC_EP_INTERRUPT, - .wMaxTransferSize = cpu_to_le16(16), + .wMaxTransferSize = cpu_to_le16(STATUS_BYTECOUNT), }; static struct usb_interface_descriptor uvc_streaming_intf_alt0 __initdata = { @@ -122,7 +143,7 @@ static struct usb_interface_descriptor uvc_streaming_intf_alt1 __initdata = { .iInterface = 0, }; -static struct usb_endpoint_descriptor uvc_streaming_ep = { +static struct usb_endpoint_descriptor uvc_fs_streaming_ep = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_IN, @@ -131,15 +152,72 @@ static struct usb_endpoint_descriptor uvc_streaming_ep = { .bInterval = 1, }; +static struct usb_endpoint_descriptor uvc_hs_streaming_ep = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 1, +}; + +/* super speed support */ +static struct usb_endpoint_descriptor uvc_ss_control_ep __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(STATUS_BYTECOUNT), + .bInterval = 8, +}; + +static struct usb_ss_ep_comp_descriptor uvc_ss_control_comp __initdata = { + .bLength = sizeof uvc_ss_control_comp, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + /* the following 3 values can be tweaked if necessary */ + /* .bMaxBurst = 0, */ + /* .bmAttributes = 0, */ + .wBytesPerInterval = cpu_to_le16(STATUS_BYTECOUNT), +}; + +static struct usb_endpoint_descriptor uvc_ss_streaming_ep __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + +static struct usb_ss_ep_comp_descriptor uvc_ss_streaming_comp = { + .bLength = sizeof uvc_ss_streaming_comp, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + /* the following 3 values can be tweaked if necessary */ + .bMaxBurst = 0, + .bmAttributes = 0, + .wBytesPerInterval = cpu_to_le16(1024), +}; + static const struct usb_descriptor_header * const uvc_fs_streaming[] = { (struct usb_descriptor_header *) &uvc_streaming_intf_alt1, - (struct usb_descriptor_header *) &uvc_streaming_ep, + (struct usb_descriptor_header *) &uvc_fs_streaming_ep, NULL, }; static const struct usb_descriptor_header * const uvc_hs_streaming[] = { (struct usb_descriptor_header *) &uvc_streaming_intf_alt1, - (struct usb_descriptor_header *) &uvc_streaming_ep, + (struct usb_descriptor_header *) &uvc_hs_streaming_ep, + NULL, +}; + +static const struct usb_descriptor_header * const uvc_ss_streaming[] = { + (struct usb_descriptor_header *) &uvc_streaming_intf_alt1, + (struct usb_descriptor_header *) &uvc_ss_streaming_ep, + (struct usb_descriptor_header *) &uvc_ss_streaming_comp, NULL, }; @@ -215,6 +293,7 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt) struct uvc_device *uvc = to_uvc(f); struct v4l2_event v4l2_event; struct uvc_event *uvc_event = (void *)&v4l2_event.u.data; + int ret; INFO(f->config->cdev, "uvc_function_set_alt(%u, %u)\n", interface, alt); @@ -262,7 +341,10 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt) return 0; if (uvc->video.ep) { - uvc->video.ep->desc = &uvc_streaming_ep; + ret = config_ep_by_speed(f->config->cdev->gadget, + &(uvc->func), uvc->video.ep); + if (ret) + return ret; usb_ep_enable(uvc->video.ep); } @@ -368,9 +450,11 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) { struct uvc_input_header_descriptor *uvc_streaming_header; struct uvc_header_descriptor *uvc_control_header; + const struct uvc_descriptor_header * const *uvc_control_desc; const struct uvc_descriptor_header * const *uvc_streaming_cls; const struct usb_descriptor_header * const *uvc_streaming_std; const struct usb_descriptor_header * const *src; + static struct usb_endpoint_descriptor *uvc_control_ep; struct usb_descriptor_header **dst; struct usb_descriptor_header **hdr; unsigned int control_size; @@ -379,10 +463,29 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) unsigned int bytes; void *mem; - uvc_streaming_cls = (speed == USB_SPEED_FULL) - ? uvc->desc.fs_streaming : uvc->desc.hs_streaming; - uvc_streaming_std = (speed == USB_SPEED_FULL) - ? uvc_fs_streaming : uvc_hs_streaming; + switch (speed) { + case USB_SPEED_SUPER: + uvc_control_desc = uvc->desc.ss_control; + uvc_streaming_cls = uvc->desc.ss_streaming; + uvc_streaming_std = uvc_ss_streaming; + uvc_control_ep = &uvc_ss_control_ep; + break; + + case USB_SPEED_HIGH: + uvc_control_desc = uvc->desc.fs_control; + uvc_streaming_cls = uvc->desc.hs_streaming; + uvc_streaming_std = uvc_hs_streaming; + uvc_control_ep = &uvc_fs_control_ep; + break; + + case USB_SPEED_FULL: + default: + uvc_control_desc = uvc->desc.fs_control; + uvc_streaming_cls = uvc->desc.fs_streaming; + uvc_streaming_std = uvc_fs_streaming; + uvc_control_ep = &uvc_fs_control_ep; + break; + } /* Descriptors layout * @@ -400,16 +503,24 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) control_size = 0; streaming_size = 0; bytes = uvc_iad.bLength + uvc_control_intf.bLength - + uvc_control_ep.bLength + uvc_control_cs_ep.bLength + + uvc_control_ep->bLength + uvc_control_cs_ep.bLength + uvc_streaming_intf_alt0.bLength; - n_desc = 5; - for (src = (const struct usb_descriptor_header**)uvc->desc.control; *src; ++src) { + if (speed == USB_SPEED_SUPER) { + bytes += uvc_ss_control_comp.bLength; + n_desc = 6; + } else { + n_desc = 5; + } + + for (src = (const struct usb_descriptor_header **)uvc_control_desc; + *src; ++src) { control_size += (*src)->bLength; bytes += (*src)->bLength; n_desc++; } - for (src = (const struct usb_descriptor_header**)uvc_streaming_cls; *src; ++src) { + for (src = (const struct usb_descriptor_header **)uvc_streaming_cls; + *src; ++src) { streaming_size += (*src)->bLength; bytes += (*src)->bLength; n_desc++; @@ -433,12 +544,15 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) uvc_control_header = mem; UVC_COPY_DESCRIPTORS(mem, dst, - (const struct usb_descriptor_header**)uvc->desc.control); + (const struct usb_descriptor_header **)uvc_control_desc); uvc_control_header->wTotalLength = cpu_to_le16(control_size); uvc_control_header->bInCollection = 1; uvc_control_header->baInterfaceNr[0] = uvc->streaming_intf; - UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_ep); + UVC_COPY_DESCRIPTOR(mem, dst, uvc_control_ep); + if (speed == USB_SPEED_SUPER) + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_ss_control_comp); + UVC_COPY_DESCRIPTOR(mem, dst, &uvc_control_cs_ep); UVC_COPY_DESCRIPTOR(mem, dst, &uvc_streaming_intf_alt0); @@ -446,7 +560,8 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) UVC_COPY_DESCRIPTORS(mem, dst, (const struct usb_descriptor_header**)uvc_streaming_cls); uvc_streaming_header->wTotalLength = cpu_to_le16(streaming_size); - uvc_streaming_header->bEndpointAddress = uvc_streaming_ep.bEndpointAddress; + uvc_streaming_header->bEndpointAddress = + uvc_fs_streaming_ep.bEndpointAddress; UVC_COPY_DESCRIPTORS(mem, dst, uvc_streaming_std); @@ -482,6 +597,7 @@ uvc_function_unbind(struct usb_configuration *c, struct usb_function *f) kfree(f->descriptors); kfree(f->hs_descriptors); + kfree(f->ss_descriptors); kfree(uvc); } @@ -496,8 +612,26 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) INFO(cdev, "uvc_function_bind\n"); + /* sanity check the streaming endpoint module parameters */ + if (streaming_interval < 1) + streaming_interval = 1; + if (streaming_interval > 16) + streaming_interval = 16; + if (streaming_mult > 2) + streaming_mult = 2; + if (streaming_maxburst > 15) + streaming_maxburst = 15; + + /* + * fill in the FS video streaming specific descriptors from the + * module parameters + */ + uvc_fs_streaming_ep.wMaxPacketSize = streaming_maxpacket > 1023 ? + 1023 : streaming_maxpacket; + uvc_fs_streaming_ep.bInterval = streaming_interval; + /* Allocate endpoints. */ - ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep); + ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_control_ep); if (!ep) { INFO(cdev, "Unable to allocate control EP\n"); goto error; @@ -505,7 +639,7 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) uvc->control_ep = ep; ep->driver_data = uvc; - ep = usb_ep_autoconfig(cdev->gadget, &uvc_streaming_ep); + ep = usb_ep_autoconfig(cdev->gadget, &uvc_fs_streaming_ep); if (!ep) { INFO(cdev, "Unable to allocate streaming EP\n"); goto error; @@ -526,9 +660,52 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) uvc_streaming_intf_alt1.bInterfaceNumber = ret; uvc->streaming_intf = ret; - /* Copy descriptors. */ + /* sanity check the streaming endpoint module parameters */ + if (streaming_maxpacket > 1024) + streaming_maxpacket = 1024; + + /* Copy descriptors for FS. */ f->descriptors = uvc_copy_descriptors(uvc, USB_SPEED_FULL); - f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH); + + /* support high speed hardware */ + if (gadget_is_dualspeed(cdev->gadget)) { + /* + * Fill in the HS descriptors from the module parameters for the + * Video Streaming endpoint. + * NOTE: We assume that the user knows what they are doing and + * won't give parameters that their UDC doesn't support. + */ + uvc_hs_streaming_ep.wMaxPacketSize = streaming_maxpacket; + uvc_hs_streaming_ep.wMaxPacketSize |= streaming_mult << 11; + uvc_hs_streaming_ep.bInterval = streaming_interval; + uvc_hs_streaming_ep.bEndpointAddress = + uvc_fs_streaming_ep.bEndpointAddress; + + /* Copy descriptors. */ + f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH); + } + + /* support super speed hardware */ + if (gadget_is_superspeed(c->cdev->gadget)) { + /* + * Fill in the SS descriptors from the module parameters for the + * Video Streaming endpoint. + * NOTE: We assume that the user knows what they are doing and + * won't give parameters that their UDC doesn't support. + */ + uvc_ss_streaming_ep.wMaxPacketSize = streaming_maxpacket; + uvc_ss_streaming_ep.bInterval = streaming_interval; + uvc_ss_streaming_comp.bmAttributes = streaming_mult; + uvc_ss_streaming_comp.bMaxBurst = streaming_maxburst; + uvc_ss_streaming_comp.wBytesPerInterval = + streaming_maxpacket * (streaming_mult + 1) * + (streaming_maxburst + 1); + uvc_ss_streaming_ep.bEndpointAddress = + uvc_fs_streaming_ep.bEndpointAddress; + + /* Copy descriptors. */ + f->ss_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER); + } /* Preallocate control endpoint request. */ uvc->control_req = usb_ep_alloc_request(cdev->gadget->ep0, GFP_KERNEL); @@ -583,9 +760,11 @@ error: */ int __init uvc_bind_config(struct usb_configuration *c, - const struct uvc_descriptor_header * const *control, + const struct uvc_descriptor_header * const *fs_control, + const struct uvc_descriptor_header * const *ss_control, const struct uvc_descriptor_header * const *fs_streaming, - const struct uvc_descriptor_header * const *hs_streaming) + const struct uvc_descriptor_header * const *hs_streaming, + const struct uvc_descriptor_header * const *ss_streaming) { struct uvc_device *uvc; int ret = 0; @@ -603,38 +782,54 @@ uvc_bind_config(struct usb_configuration *c, uvc->state = UVC_STATE_DISCONNECTED; /* Validate the descriptors. */ - if (control == NULL || control[0] == NULL || - control[0]->bDescriptorSubType != UVC_VC_HEADER) + if (fs_control == NULL || fs_control[0] == NULL || + fs_control[0]->bDescriptorSubType != UVC_VC_HEADER) goto error; - if (fs_streaming == NULL || fs_streaming[0] == NULL || - fs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER) + if (ss_control == NULL || ss_control[0] == NULL || + ss_control[0]->bDescriptorSubType != UVC_VC_HEADER) goto error; - if (hs_streaming == NULL || hs_streaming[0] == NULL || - hs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER) + if (fs_streaming == NULL || fs_streaming[0] == NULL || + fs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER) goto error; - uvc->desc.control = control; - uvc->desc.fs_streaming = fs_streaming; - uvc->desc.hs_streaming = hs_streaming; - - /* Allocate string descriptor numbers. */ - if ((ret = usb_string_id(c->cdev)) < 0) + if (hs_streaming == NULL || hs_streaming[0] == NULL || + hs_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER) goto error; - uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id = ret; - uvc_iad.iFunction = ret; - if ((ret = usb_string_id(c->cdev)) < 0) + if (ss_streaming == NULL || ss_streaming[0] == NULL || + ss_streaming[0]->bDescriptorSubType != UVC_VS_INPUT_HEADER) goto error; - uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id = ret; - uvc_control_intf.iInterface = ret; - if ((ret = usb_string_id(c->cdev)) < 0) - goto error; - uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id = ret; - uvc_streaming_intf_alt0.iInterface = ret; - uvc_streaming_intf_alt1.iInterface = ret; + uvc->desc.fs_control = fs_control; + uvc->desc.ss_control = ss_control; + uvc->desc.fs_streaming = fs_streaming; + uvc->desc.hs_streaming = hs_streaming; + uvc->desc.ss_streaming = ss_streaming; + + /* maybe allocate device-global string IDs, and patch descriptors */ + if (uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id == 0) { + /* Allocate string descriptor numbers. */ + ret = usb_string_id(c->cdev); + if (ret < 0) + goto error; + uvc_en_us_strings[UVC_STRING_ASSOCIATION_IDX].id = ret; + uvc_iad.iFunction = ret; + + ret = usb_string_id(c->cdev); + if (ret < 0) + goto error; + uvc_en_us_strings[UVC_STRING_CONTROL_IDX].id = ret; + uvc_control_intf.iInterface = ret; + + ret = usb_string_id(c->cdev); + if (ret < 0) + goto error; + uvc_en_us_strings[UVC_STRING_STREAMING_IDX].id = ret; + uvc_streaming_intf_alt0.iInterface = ret; + uvc_streaming_intf_alt1.iInterface = ret; + } /* Register the function. */ uvc->func.name = "uvc"; diff --git a/drivers/usb/gadget/f_uvc.h b/drivers/usb/gadget/f_uvc.h index abf832935134..c3d258d30188 100644 --- a/drivers/usb/gadget/f_uvc.h +++ b/drivers/usb/gadget/f_uvc.h @@ -17,9 +17,11 @@ #include <linux/usb/video.h> extern int uvc_bind_config(struct usb_configuration *c, - const struct uvc_descriptor_header * const *control, - const struct uvc_descriptor_header * const *fs_streaming, - const struct uvc_descriptor_header * const *hs_streaming); + const struct uvc_descriptor_header * const *fs_control, + const struct uvc_descriptor_header * const *hs_control, + const struct uvc_descriptor_header * const *fs_streaming, + const struct uvc_descriptor_header * const *hs_streaming, + const struct uvc_descriptor_header * const *ss_streaming); #endif /* _F_UVC_H_ */ diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c index dcbc0a2e48dd..1b0f086426bd 100644 --- a/drivers/usb/gadget/fsl_mxc_udc.c +++ b/drivers/usb/gadget/fsl_mxc_udc.c @@ -21,7 +21,8 @@ #include <mach/hardware.h> static struct clk *mxc_ahb_clk; -static struct clk *mxc_usb_clk; +static struct clk *mxc_per_clk; +static struct clk *mxc_ipg_clk; /* workaround ENGcm09152 for i.MX35 */ #define USBPHYCTRL_OTGBASE_OFFSET 0x608 @@ -35,28 +36,31 @@ int fsl_udc_clk_init(struct platform_device *pdev) pdata = pdev->dev.platform_data; - if (!cpu_is_mx35() && !cpu_is_mx25()) { - mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb"); - if (IS_ERR(mxc_ahb_clk)) - return PTR_ERR(mxc_ahb_clk); + mxc_ipg_clk = devm_clk_get(&pdev->dev, "ipg"); + if (IS_ERR(mxc_ipg_clk)) { + dev_err(&pdev->dev, "clk_get(\"ipg\") failed\n"); + return PTR_ERR(mxc_ipg_clk); + } - ret = clk_enable(mxc_ahb_clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n"); - goto eenahb; - } + mxc_ahb_clk = devm_clk_get(&pdev->dev, "ahb"); + if (IS_ERR(mxc_ahb_clk)) { + dev_err(&pdev->dev, "clk_get(\"ahb\") failed\n"); + return PTR_ERR(mxc_ahb_clk); } - /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */ - mxc_usb_clk = clk_get(&pdev->dev, "usb"); - if (IS_ERR(mxc_usb_clk)) { - dev_err(&pdev->dev, "clk_get(\"usb\") failed\n"); - ret = PTR_ERR(mxc_usb_clk); - goto egusb; + mxc_per_clk = devm_clk_get(&pdev->dev, "per"); + if (IS_ERR(mxc_per_clk)) { + dev_err(&pdev->dev, "clk_get(\"per\") failed\n"); + return PTR_ERR(mxc_per_clk); } + clk_prepare_enable(mxc_ipg_clk); + clk_prepare_enable(mxc_ahb_clk); + clk_prepare_enable(mxc_per_clk); + + /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */ if (!cpu_is_mx51()) { - freq = clk_get_rate(mxc_usb_clk); + freq = clk_get_rate(mxc_per_clk); if (pdata->phy_mode != FSL_USB2_PHY_ULPI && (freq < 59999000 || freq > 60001000)) { dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq); @@ -65,24 +69,13 @@ int fsl_udc_clk_init(struct platform_device *pdev) } } - ret = clk_enable(mxc_usb_clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk_enable(\"usb_clk\") failed\n"); - goto eenusb; - } - return 0; -eenusb: eclkrate: - clk_put(mxc_usb_clk); - mxc_usb_clk = NULL; -egusb: - if (!cpu_is_mx35()) - clk_disable(mxc_ahb_clk); -eenahb: - if (!cpu_is_mx35()) - clk_put(mxc_ahb_clk); + clk_disable_unprepare(mxc_ipg_clk); + clk_disable_unprepare(mxc_ahb_clk); + clk_disable_unprepare(mxc_per_clk); + mxc_per_clk = NULL; return ret; } @@ -104,20 +97,15 @@ void fsl_udc_clk_finalize(struct platform_device *pdev) /* ULPI transceivers don't need usbpll */ if (pdata->phy_mode == FSL_USB2_PHY_ULPI) { - clk_disable(mxc_usb_clk); - clk_put(mxc_usb_clk); - mxc_usb_clk = NULL; + clk_disable_unprepare(mxc_per_clk); + mxc_per_clk = NULL; } } void fsl_udc_clk_release(void) { - if (mxc_usb_clk) { - clk_disable(mxc_usb_clk); - clk_put(mxc_usb_clk); - } - if (!cpu_is_mx35()) { - clk_disable(mxc_ahb_clk); - clk_put(mxc_ahb_clk); - } + if (mxc_per_clk) + clk_disable_unprepare(mxc_per_clk); + clk_disable_unprepare(mxc_ahb_clk); + clk_disable_unprepare(mxc_ipg_clk); } diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index bc6f9bb9994a..3def828f85e7 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -24,6 +24,7 @@ #include <linux/ioport.h> #include <linux/types.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/list.h> @@ -1229,7 +1230,7 @@ static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA) struct fsl_udc *udc; udc = container_of(gadget, struct fsl_udc, gadget); - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) return usb_phy_set_power(udc->transceiver, mA); return -ENOTSUPP; } @@ -1983,13 +1984,13 @@ static int fsl_start(struct usb_gadget_driver *driver, goto out; } - if (udc_controller->transceiver) { + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { /* Suspend the controller until OTG enable it */ udc_controller->stopped = 1; printk(KERN_INFO "Suspend udc for OTG auto detect\n"); /* connect to bus through transceiver */ - if (udc_controller->transceiver) { + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { retval = otg_set_peripheral( udc_controller->transceiver->otg, &udc_controller->gadget); @@ -2030,7 +2031,7 @@ static int fsl_stop(struct usb_gadget_driver *driver) if (!driver || driver != udc_controller->driver || !driver->unbind) return -EINVAL; - if (udc_controller->transceiver) + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) otg_set_peripheral(udc_controller->transceiver->otg, NULL); /* stop DR, disable intr */ @@ -2455,8 +2456,8 @@ static int __init fsl_udc_probe(struct platform_device *pdev) #ifdef CONFIG_USB_OTG if (pdata->operating_mode == FSL_USB2_DR_OTG) { - udc_controller->transceiver = usb_get_transceiver(); - if (!udc_controller->transceiver) { + udc_controller->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(udc_controller->transceiver)) { ERR("Can't find OTG driver!\n"); ret = -ENODEV; goto err_kfree; @@ -2540,7 +2541,7 @@ static int __init fsl_udc_probe(struct platform_device *pdev) goto err_free_irq; } - if (!udc_controller->transceiver) { + if (IS_ERR_OR_NULL(udc_controller->transceiver)) { /* initialize usb hw reg except for regs for EP, * leave usbintr reg untouched */ dr_controller_setup(udc_controller); @@ -2560,11 +2561,12 @@ static int __init fsl_udc_probe(struct platform_device *pdev) dev_set_name(&udc_controller->gadget.dev, "gadget"); udc_controller->gadget.dev.release = fsl_udc_release; udc_controller->gadget.dev.parent = &pdev->dev; + udc_controller->gadget.dev.of_node = pdev->dev.of_node; ret = device_register(&udc_controller->gadget.dev); if (ret < 0) goto err_free_irq; - if (udc_controller->transceiver) + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) udc_controller->gadget.is_otg = 1; /* setup QH and epctrl for ep0 */ diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c index 54034f84f992..dc5334856afe 100644 --- a/drivers/usb/gadget/imx_udc.c +++ b/drivers/usb/gadget/imx_udc.c @@ -1432,7 +1432,7 @@ static int __init imx_udc_probe(struct platform_device *pdev) dev_err(&pdev->dev, "can't get USB clock\n"); goto fail2; } - clk_enable(clk); + clk_prepare_enable(clk); if (clk_get_rate(clk) != 48000000) { D_INI(&pdev->dev, @@ -1496,7 +1496,7 @@ fail4: free_irq(imx_usb->usbd_int[i], imx_usb); fail3: clk_put(clk); - clk_disable(clk); + clk_disable_unprepare(clk); fail2: iounmap(base); fail1: @@ -1521,7 +1521,7 @@ static int __exit imx_udc_remove(struct platform_device *pdev) free_irq(imx_usb->usbd_int[i], imx_usb); clk_put(imx_usb->clk); - clk_disable(imx_usb->clk); + clk_disable_unprepare(imx_usb->clk); iounmap(imx_usb->base); release_mem_region(imx_usb->res->start, resource_size(imx_usb->res)); diff --git a/drivers/usb/gadget/lpc32xx_udc.c b/drivers/usb/gadget/lpc32xx_udc.c index 2ab0388d93eb..f1ec99e69cb7 100644 --- a/drivers/usb/gadget/lpc32xx_udc.c +++ b/drivers/usb/gadget/lpc32xx_udc.c @@ -165,6 +165,7 @@ struct lpc32xx_udc { int udp_irq[4]; struct clk *usb_pll_clk; struct clk *usb_slv_clk; + struct clk *usb_otg_clk; /* DMA support */ u32 *udca_v_base; @@ -227,33 +228,15 @@ static inline struct lpc32xx_udc *to_udc(struct usb_gadget *g) #define UDCA_BUFF_SIZE (128) /* TODO: When the clock framework is introduced in LPC32xx, IO_ADDRESS will - * be replaced with an inremap()ed pointer, see USB_OTG_CLK_CTRL() + * be replaced with an inremap()ed pointer * */ #define USB_CTRL IO_ADDRESS(LPC32XX_CLK_PM_BASE + 0x64) -#define USB_CLOCK_MASK (AHB_M_CLOCK_ON | OTG_CLOCK_ON | \ - DEV_CLOCK_ON | I2C_CLOCK_ON) /* USB_CTRL bit defines */ #define USB_SLAVE_HCLK_EN (1 << 24) #define USB_HOST_NEED_CLK_EN (1 << 21) #define USB_DEV_NEED_CLK_EN (1 << 22) -#define USB_OTG_CLK_CTRL(udc) ((udc)->udp_baseaddr + 0xFF4) -#define USB_OTG_CLK_STAT(udc) ((udc)->udp_baseaddr + 0xFF8) - -/* USB_OTG_CLK_CTRL bit defines */ -#define AHB_M_CLOCK_ON (1 << 4) -#define OTG_CLOCK_ON (1 << 3) -#define I2C_CLOCK_ON (1 << 2) -#define DEV_CLOCK_ON (1 << 1) -#define HOST_CLOCK_ON (1 << 0) - -#define USB_OTG_STAT_CONTROL(udc) (udc->udp_baseaddr + 0x110) - -/* USB_OTG_STAT_CONTROL bit defines */ -#define TRANSPARENT_I2C_EN (1 << 7) -#define HOST_EN (1 << 0) - /********************************************************************** * USB device controller register offsets **********************************************************************/ @@ -677,7 +660,7 @@ static void isp1301_udc_configure(struct lpc32xx_udc *udc) ISP1301_I2C_INTERRUPT_RISING, INT_VBUS_VLD); /* Enable usb_need_clk clock after transceiver is initialized */ - writel((readl(USB_CTRL) | (1 << 22)), USB_CTRL); + writel((readl(USB_CTRL) | USB_DEV_NEED_CLK_EN), USB_CTRL); dev_info(udc->dev, "ISP1301 Vendor ID : 0x%04x\n", i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x00)); @@ -1010,11 +993,8 @@ static void udc_dd_free(struct lpc32xx_udc *udc, struct lpc32xx_usbd_dd_gad *dd) /* Enables or disables most of the USB system clocks when low power mode is * needed. Clocks are typically started on a connection event, and disabled * when a cable is disconnected */ -#define OTGOFF_CLK_MASK (AHB_M_CLOCK_ON | I2C_CLOCK_ON) static void udc_clk_set(struct lpc32xx_udc *udc, int enable) { - int to = 1000; - if (enable != 0) { if (udc->clocked) return; @@ -1028,14 +1008,7 @@ static void udc_clk_set(struct lpc32xx_udc *udc, int enable) writel(readl(USB_CTRL) | USB_DEV_NEED_CLK_EN, USB_CTRL); - /* Set to enable all needed USB OTG clocks */ - writel(USB_CLOCK_MASK, USB_OTG_CLK_CTRL(udc)); - - while (((readl(USB_OTG_CLK_STAT(udc)) & USB_CLOCK_MASK) != - USB_CLOCK_MASK) && (to > 0)) - to--; - if (!to) - dev_dbg(udc->dev, "Cannot enable USB OTG clocking\n"); + clk_enable(udc->usb_otg_clk); } else { if (!udc->clocked) return; @@ -1047,19 +1020,11 @@ static void udc_clk_set(struct lpc32xx_udc *udc, int enable) /* 48MHz PLL dpwn */ clk_disable(udc->usb_pll_clk); - /* Enable the USB device clock */ + /* Disable the USB device clock */ writel(readl(USB_CTRL) & ~USB_DEV_NEED_CLK_EN, USB_CTRL); - /* Set to enable all needed USB OTG clocks */ - writel(OTGOFF_CLK_MASK, USB_OTG_CLK_CTRL(udc)); - - while (((readl(USB_OTG_CLK_STAT(udc)) & - OTGOFF_CLK_MASK) != - OTGOFF_CLK_MASK) && (to > 0)) - to--; - if (!to) - dev_dbg(udc->dev, "Cannot disable USB OTG clocking\n"); + clk_disable(udc->usb_otg_clk); } } @@ -3041,6 +3006,7 @@ static int lpc32xx_start(struct usb_gadget_driver *driver, udc->driver = driver; udc->gadget.dev.driver = &driver->driver; + udc->gadget.dev.of_node = udc->dev->of_node; udc->enabled = 1; udc->selfpowered = 1; udc->vbus = 0; @@ -3239,6 +3205,12 @@ static int __init lpc32xx_udc_probe(struct platform_device *pdev) retval = PTR_ERR(udc->usb_slv_clk); goto usb_clk_get_fail; } + udc->usb_otg_clk = clk_get(&pdev->dev, "ck_usb_otg"); + if (IS_ERR(udc->usb_otg_clk)) { + dev_err(udc->dev, "failed to acquire USB otg clock\n"); + retval = PTR_ERR(udc->usb_slv_clk); + goto usb_otg_clk_get_fail; + } /* Setup PLL clock to 48MHz */ retval = clk_enable(udc->usb_pll_clk); @@ -3262,15 +3234,12 @@ static int __init lpc32xx_udc_probe(struct platform_device *pdev) goto usb_clk_enable_fail; } - /* Set to enable all needed USB OTG clocks */ - writel(USB_CLOCK_MASK, USB_OTG_CLK_CTRL(udc)); - - i = 1000; - while (((readl(USB_OTG_CLK_STAT(udc)) & USB_CLOCK_MASK) != - USB_CLOCK_MASK) && (i > 0)) - i--; - if (!i) - dev_dbg(udc->dev, "USB OTG clocks not correctly enabled\n"); + /* Enable USB OTG clock */ + retval = clk_enable(udc->usb_otg_clk); + if (retval < 0) { + dev_err(udc->dev, "failed to start USB otg clock\n"); + goto usb_otg_clk_enable_fail; + } /* Setup deferred workqueue data */ udc->poweron = udc->pullup = 0; @@ -3390,12 +3359,16 @@ dma_alloc_fail: dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE, udc->udca_v_base, udc->udca_p_base); i2c_fail: + clk_disable(udc->usb_otg_clk); +usb_otg_clk_enable_fail: clk_disable(udc->usb_slv_clk); usb_clk_enable_fail: pll_set_fail: clk_disable(udc->usb_pll_clk); pll_enable_fail: clk_put(udc->usb_slv_clk); +usb_otg_clk_get_fail: + clk_put(udc->usb_otg_clk); usb_clk_get_fail: clk_put(udc->usb_pll_clk); pll_get_fail: @@ -3433,6 +3406,8 @@ static int __devexit lpc32xx_udc_remove(struct platform_device *pdev) device_unregister(&udc->gadget.dev); + clk_disable(udc->usb_otg_clk); + clk_put(udc->usb_otg_clk); clk_disable(udc->usb_slv_clk); clk_put(udc->usb_slv_clk); clk_disable(udc->usb_pll_clk); @@ -3446,7 +3421,6 @@ static int __devexit lpc32xx_udc_remove(struct platform_device *pdev) #ifdef CONFIG_PM static int lpc32xx_udc_suspend(struct platform_device *pdev, pm_message_t mesg) { - int to = 1000; struct lpc32xx_udc *udc = platform_get_drvdata(pdev); if (udc->clocked) { @@ -3461,15 +3435,6 @@ static int lpc32xx_udc_suspend(struct platform_device *pdev, pm_message_t mesg) on resume */ udc->clocked = 1; - /* Kill OTG and I2C clocks */ - writel(0, USB_OTG_CLK_CTRL(udc)); - while (((readl(USB_OTG_CLK_STAT(udc)) & OTGOFF_CLK_MASK) != - OTGOFF_CLK_MASK) && (to > 0)) - to--; - if (!to) - dev_dbg(udc->dev, - "USB OTG clocks not correctly enabled\n"); - /* Kill global USB clock */ clk_disable(udc->usb_slv_clk); } diff --git a/drivers/usb/gadget/mv_u3d.h b/drivers/usb/gadget/mv_u3d.h new file mode 100644 index 000000000000..e32a787ac373 --- /dev/null +++ b/drivers/usb/gadget/mv_u3d.h @@ -0,0 +1,320 @@ +/* + * Copyright (C) 2011 Marvell International Ltd. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +#ifndef __MV_U3D_H +#define __MV_U3D_H + +#define MV_U3D_EP_CONTEXT_ALIGNMENT 32 +#define MV_U3D_TRB_ALIGNMENT 16 +#define MV_U3D_DMA_BOUNDARY 4096 +#define MV_U3D_EP0_MAX_PKT_SIZE 512 + +/* ep0 transfer state */ +#define MV_U3D_WAIT_FOR_SETUP 0 +#define MV_U3D_DATA_STATE_XMIT 1 +#define MV_U3D_DATA_STATE_NEED_ZLP 2 +#define MV_U3D_WAIT_FOR_OUT_STATUS 3 +#define MV_U3D_DATA_STATE_RECV 4 +#define MV_U3D_STATUS_STAGE 5 + +#define MV_U3D_EP_MAX_LENGTH_TRANSFER 0x10000 + +/* USB3 Interrupt Status */ +#define MV_U3D_USBINT_SETUP 0x00000001 +#define MV_U3D_USBINT_RX_COMPLETE 0x00000002 +#define MV_U3D_USBINT_TX_COMPLETE 0x00000004 +#define MV_U3D_USBINT_UNDER_RUN 0x00000008 +#define MV_U3D_USBINT_RXDESC_ERR 0x00000010 +#define MV_U3D_USBINT_TXDESC_ERR 0x00000020 +#define MV_U3D_USBINT_RX_TRB_COMPLETE 0x00000040 +#define MV_U3D_USBINT_TX_TRB_COMPLETE 0x00000080 +#define MV_U3D_USBINT_VBUS_VALID 0x00010000 +#define MV_U3D_USBINT_STORAGE_CMD_FULL 0x00020000 +#define MV_U3D_USBINT_LINK_CHG 0x01000000 + +/* USB3 Interrupt Enable */ +#define MV_U3D_INTR_ENABLE_SETUP 0x00000001 +#define MV_U3D_INTR_ENABLE_RX_COMPLETE 0x00000002 +#define MV_U3D_INTR_ENABLE_TX_COMPLETE 0x00000004 +#define MV_U3D_INTR_ENABLE_UNDER_RUN 0x00000008 +#define MV_U3D_INTR_ENABLE_RXDESC_ERR 0x00000010 +#define MV_U3D_INTR_ENABLE_TXDESC_ERR 0x00000020 +#define MV_U3D_INTR_ENABLE_RX_TRB_COMPLETE 0x00000040 +#define MV_U3D_INTR_ENABLE_TX_TRB_COMPLETE 0x00000080 +#define MV_U3D_INTR_ENABLE_RX_BUFFER_ERR 0x00000100 +#define MV_U3D_INTR_ENABLE_VBUS_VALID 0x00010000 +#define MV_U3D_INTR_ENABLE_STORAGE_CMD_FULL 0x00020000 +#define MV_U3D_INTR_ENABLE_LINK_CHG 0x01000000 +#define MV_U3D_INTR_ENABLE_PRIME_STATUS 0x02000000 + +/* USB3 Link Change */ +#define MV_U3D_LINK_CHANGE_LINK_UP 0x00000001 +#define MV_U3D_LINK_CHANGE_SUSPEND 0x00000002 +#define MV_U3D_LINK_CHANGE_RESUME 0x00000004 +#define MV_U3D_LINK_CHANGE_WRESET 0x00000008 +#define MV_U3D_LINK_CHANGE_HRESET 0x00000010 +#define MV_U3D_LINK_CHANGE_VBUS_INVALID 0x00000020 +#define MV_U3D_LINK_CHANGE_INACT 0x00000040 +#define MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0 0x00000080 +#define MV_U3D_LINK_CHANGE_U1 0x00000100 +#define MV_U3D_LINK_CHANGE_U2 0x00000200 +#define MV_U3D_LINK_CHANGE_U3 0x00000400 + +/* bridge setting */ +#define MV_U3D_BRIDGE_SETTING_VBUS_VALID (1 << 16) + +/* Command Register Bit Masks */ +#define MV_U3D_CMD_RUN_STOP 0x00000001 +#define MV_U3D_CMD_CTRL_RESET 0x00000002 + +/* ep control register */ +#define MV_U3D_EPXCR_EP_TYPE_CONTROL 0 +#define MV_U3D_EPXCR_EP_TYPE_ISOC 1 +#define MV_U3D_EPXCR_EP_TYPE_BULK 2 +#define MV_U3D_EPXCR_EP_TYPE_INT 3 +#define MV_U3D_EPXCR_EP_ENABLE_SHIFT 4 +#define MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT 12 +#define MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT 16 +#define MV_U3D_USB_BULK_BURST_OUT 6 +#define MV_U3D_USB_BULK_BURST_IN 14 + +#define MV_U3D_EPXCR_EP_FLUSH (1 << 7) +#define MV_U3D_EPXCR_EP_HALT (1 << 1) +#define MV_U3D_EPXCR_EP_INIT (1) + +/* TX/RX Status Register */ +#define MV_U3D_XFERSTATUS_COMPLETE_SHIFT 24 +#define MV_U3D_COMPLETE_INVALID 0 +#define MV_U3D_COMPLETE_SUCCESS 1 +#define MV_U3D_COMPLETE_BUFF_ERR 2 +#define MV_U3D_COMPLETE_SHORT_PACKET 3 +#define MV_U3D_COMPLETE_TRB_ERR 5 +#define MV_U3D_XFERSTATUS_TRB_LENGTH_MASK (0xFFFFFF) + +#define MV_U3D_USB_LINK_BYPASS_VBUS 0x8 + +#define MV_U3D_LTSSM_PHY_INIT_DONE 0x80000000 +#define MV_U3D_LTSSM_NEVER_GO_COMPLIANCE 0x40000000 + +#define MV_U3D_USB3_OP_REGS_OFFSET 0x100 +#define MV_U3D_USB3_PHY_OFFSET 0xB800 + +#define DCS_ENABLE 0x1 + +/* timeout */ +#define MV_U3D_RESET_TIMEOUT 10000 +#define MV_U3D_FLUSH_TIMEOUT 100000 +#define MV_U3D_OWN_TIMEOUT 10000 +#define LOOPS_USEC_SHIFT 4 +#define LOOPS_USEC (1 << LOOPS_USEC_SHIFT) +#define LOOPS(timeout) ((timeout) >> LOOPS_USEC_SHIFT) + +/* ep direction */ +#define MV_U3D_EP_DIR_IN 1 +#define MV_U3D_EP_DIR_OUT 0 +#define mv_u3d_ep_dir(ep) (((ep)->ep_num == 0) ? \ + ((ep)->u3d->ep0_dir) : ((ep)->direction)) + +/* usb capability registers */ +struct mv_u3d_cap_regs { + u32 rsvd[5]; + u32 dboff; /* doorbell register offset */ + u32 rtsoff; /* runtime register offset */ + u32 vuoff; /* vendor unique register offset */ +}; + +/* operation registers */ +struct mv_u3d_op_regs { + u32 usbcmd; /* Command register */ + u32 rsvd1[11]; + u32 dcbaapl; /* Device Context Base Address low register */ + u32 dcbaaph; /* Device Context Base Address high register */ + u32 rsvd2[243]; + u32 portsc; /* port status and control register*/ + u32 portlinkinfo; /* port link info register*/ + u32 rsvd3[9917]; + u32 doorbell; /* doorbell register */ +}; + +/* control enpoint enable registers */ +struct epxcr { + u32 epxoutcr0; /* ep out control 0 register */ + u32 epxoutcr1; /* ep out control 1 register */ + u32 epxincr0; /* ep in control 0 register */ + u32 epxincr1; /* ep in control 1 register */ +}; + +/* transfer status registers */ +struct xferstatus { + u32 curdeqlo; /* current TRB pointer low */ + u32 curdeqhi; /* current TRB pointer high */ + u32 statuslo; /* transfer status low */ + u32 statushi; /* transfer status high */ +}; + +/* vendor unique control registers */ +struct mv_u3d_vuc_regs { + u32 ctrlepenable; /* control endpoint enable register */ + u32 setuplock; /* setup lock register */ + u32 endcomplete; /* endpoint transfer complete register */ + u32 intrcause; /* interrupt cause register */ + u32 intrenable; /* interrupt enable register */ + u32 trbcomplete; /* TRB complete register */ + u32 linkchange; /* link change register */ + u32 rsvd1[5]; + u32 trbunderrun; /* TRB underrun register */ + u32 rsvd2[43]; + u32 bridgesetting; /* bridge setting register */ + u32 rsvd3[7]; + struct xferstatus txst[16]; /* TX status register */ + struct xferstatus rxst[16]; /* RX status register */ + u32 ltssm; /* LTSSM control register */ + u32 pipe; /* PIPE control register */ + u32 linkcr0; /* link control 0 register */ + u32 linkcr1; /* link control 1 register */ + u32 rsvd6[60]; + u32 mib0; /* MIB0 counter register */ + u32 usblink; /* usb link control register */ + u32 ltssmstate; /* LTSSM state register */ + u32 linkerrorcause; /* link error cause register */ + u32 rsvd7[60]; + u32 devaddrtiebrkr; /* device address and tie breaker */ + u32 itpinfo0; /* ITP info 0 register */ + u32 itpinfo1; /* ITP info 1 register */ + u32 rsvd8[61]; + struct epxcr epcr[16]; /* ep control register */ + u32 rsvd9[64]; + u32 phyaddr; /* PHY address register */ + u32 phydata; /* PHY data register */ +}; + +/* Endpoint context structure */ +struct mv_u3d_ep_context { + u32 rsvd0; + u32 rsvd1; + u32 trb_addr_lo; /* TRB address low 32 bit */ + u32 trb_addr_hi; /* TRB address high 32 bit */ + u32 rsvd2; + u32 rsvd3; + struct usb_ctrlrequest setup_buffer; /* setup data buffer */ +}; + +/* TRB control data structure */ +struct mv_u3d_trb_ctrl { + u32 own:1; /* owner of TRB */ + u32 rsvd1:3; + u32 chain:1; /* associate this TRB with the + next TRB on the Ring */ + u32 ioc:1; /* interrupt on complete */ + u32 rsvd2:4; + u32 type:6; /* TRB type */ +#define TYPE_NORMAL 1 +#define TYPE_DATA 3 +#define TYPE_LINK 6 + u32 dir:1; /* Working at data stage of control endpoint + operation. 0 is OUT and 1 is IN. */ + u32 rsvd3:15; +}; + +/* TRB data structure + * For multiple TRB, all the TRBs' physical address should be continuous. + */ +struct mv_u3d_trb_hw { + u32 buf_addr_lo; /* data buffer address low 32 bit */ + u32 buf_addr_hi; /* data buffer address high 32 bit */ + u32 trb_len; /* transfer length */ + struct mv_u3d_trb_ctrl ctrl; /* TRB control data */ +}; + +/* TRB structure */ +struct mv_u3d_trb { + struct mv_u3d_trb_hw *trb_hw; /* point to the trb_hw structure */ + dma_addr_t trb_dma; /* dma address for this trb_hw */ + struct list_head trb_list; /* trb list */ +}; + +/* device data structure */ +struct mv_u3d { + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + spinlock_t lock; /* device lock */ + struct completion *done; + struct device *dev; + int irq; + + /* usb controller registers */ + struct mv_u3d_cap_regs __iomem *cap_regs; + struct mv_u3d_op_regs __iomem *op_regs; + struct mv_u3d_vuc_regs __iomem *vuc_regs; + void __iomem *phy_regs; + + unsigned int max_eps; + struct mv_u3d_ep_context *ep_context; + size_t ep_context_size; + dma_addr_t ep_context_dma; + + struct dma_pool *trb_pool; /* for TRB data structure */ + struct mv_u3d_ep *eps; + + struct mv_u3d_req *status_req; /* ep0 status request */ + struct usb_ctrlrequest local_setup_buff; /* store setup data*/ + + unsigned int resume_state; /* USB state to resume */ + unsigned int usb_state; /* USB current state */ + unsigned int ep0_state; /* Endpoint zero state */ + unsigned int ep0_dir; + + unsigned int dev_addr; /* device address */ + + unsigned int errors; + + unsigned softconnect:1; + unsigned vbus_active:1; /* vbus is active or not */ + unsigned remote_wakeup:1; /* support remote wakeup */ + unsigned clock_gating:1; /* clock gating or not */ + unsigned active:1; /* udc is active or not */ + unsigned vbus_valid_detect:1; /* udc vbus detection */ + + struct mv_usb_addon_irq *vbus; + unsigned int power; + + struct clk *clk; +}; + +/* endpoint data structure */ +struct mv_u3d_ep { + struct usb_ep ep; + struct mv_u3d *u3d; + struct list_head queue; /* ep request queued hardware */ + struct list_head req_list; /* list of ep request */ + struct mv_u3d_ep_context *ep_context; /* ep context */ + u32 direction; + char name[14]; + u32 processing; /* there is ep request + queued on haredware */ + spinlock_t req_lock; /* ep lock */ + unsigned wedge:1; + unsigned enabled:1; + unsigned ep_type:2; + unsigned ep_num:8; +}; + +/* request data structure */ +struct mv_u3d_req { + struct usb_request req; + struct mv_u3d_ep *ep; + struct list_head queue; /* ep requst queued on hardware */ + struct list_head list; /* ep request list */ + struct list_head trb_list; /* trb list of a request */ + + struct mv_u3d_trb *trb_head; /* point to first trb of a request */ + unsigned trb_count; /* TRB number in the chain */ + unsigned chain; /* TRB chain or not */ +}; + +#endif diff --git a/drivers/usb/gadget/mv_u3d_core.c b/drivers/usb/gadget/mv_u3d_core.c new file mode 100644 index 000000000000..8cfd5b028dbd --- /dev/null +++ b/drivers/usb/gadget/mv_u3d_core.c @@ -0,0 +1,2098 @@ +/* + * Copyright (C) 2011 Marvell International Ltd. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/dma-mapping.h> +#include <linux/dmapool.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/timer.h> +#include <linux/list.h> +#include <linux/notifier.h> +#include <linux/interrupt.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/pm.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/platform_device.h> +#include <linux/platform_data/mv_usb.h> +#include <linux/clk.h> +#include <asm/system.h> +#include <asm/unaligned.h> +#include <asm/byteorder.h> + +#include "mv_u3d.h" + +#define DRIVER_DESC "Marvell PXA USB3.0 Device Controller driver" + +static const char driver_name[] = "mv_u3d"; +static const char driver_desc[] = DRIVER_DESC; + +static void mv_u3d_nuke(struct mv_u3d_ep *ep, int status); +static void mv_u3d_stop_activity(struct mv_u3d *u3d, + struct usb_gadget_driver *driver); + +/* for endpoint 0 operations */ +static const struct usb_endpoint_descriptor mv_u3d_ep0_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = 0, + .bmAttributes = USB_ENDPOINT_XFER_CONTROL, + .wMaxPacketSize = MV_U3D_EP0_MAX_PKT_SIZE, +}; + +static void mv_u3d_ep0_reset(struct mv_u3d *u3d) +{ + struct mv_u3d_ep *ep; + u32 epxcr; + int i; + + for (i = 0; i < 2; i++) { + ep = &u3d->eps[i]; + ep->u3d = u3d; + + /* ep0 ep context, ep0 in and out share the same ep context */ + ep->ep_context = &u3d->ep_context[1]; + } + + /* reset ep state machine */ + /* reset ep0 out */ + epxcr = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); + epxcr |= MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr0); + udelay(5); + epxcr &= ~MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr0); + + epxcr = ((MV_U3D_EP0_MAX_PKT_SIZE + << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | MV_U3D_EPXCR_EP_TYPE_CONTROL); + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr1); + + /* reset ep0 in */ + epxcr = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); + epxcr |= MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr0); + udelay(5); + epxcr &= ~MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr0); + + epxcr = ((MV_U3D_EP0_MAX_PKT_SIZE + << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | MV_U3D_EPXCR_EP_TYPE_CONTROL); + iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr1); +} + +static void mv_u3d_ep0_stall(struct mv_u3d *u3d) +{ + u32 tmp; + dev_dbg(u3d->dev, "%s\n", __func__); + + /* set TX and RX to stall */ + tmp = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); + tmp |= MV_U3D_EPXCR_EP_HALT; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); + + tmp = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); + tmp |= MV_U3D_EPXCR_EP_HALT; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); + + /* update ep0 state */ + u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; + u3d->ep0_dir = MV_U3D_EP_DIR_OUT; +} + +static int mv_u3d_process_ep_req(struct mv_u3d *u3d, int index, + struct mv_u3d_req *curr_req) +{ + struct mv_u3d_trb *curr_trb; + dma_addr_t cur_deq_lo; + struct mv_u3d_ep_context *curr_ep_context; + int trb_complete, actual, remaining_length; + int direction, ep_num; + int retval = 0; + u32 tmp, status, length; + + curr_ep_context = &u3d->ep_context[index]; + direction = index % 2; + ep_num = index / 2; + + trb_complete = 0; + actual = curr_req->req.length; + + while (!list_empty(&curr_req->trb_list)) { + curr_trb = list_entry(curr_req->trb_list.next, + struct mv_u3d_trb, trb_list); + if (!curr_trb->trb_hw->ctrl.own) { + dev_err(u3d->dev, "%s, TRB own error!\n", + u3d->eps[index].name); + return 1; + } + + curr_trb->trb_hw->ctrl.own = 0; + if (direction == MV_U3D_EP_DIR_OUT) { + tmp = ioread32(&u3d->vuc_regs->rxst[ep_num].statuslo); + cur_deq_lo = + ioread32(&u3d->vuc_regs->rxst[ep_num].curdeqlo); + } else { + tmp = ioread32(&u3d->vuc_regs->txst[ep_num].statuslo); + cur_deq_lo = + ioread32(&u3d->vuc_regs->txst[ep_num].curdeqlo); + } + + status = tmp >> MV_U3D_XFERSTATUS_COMPLETE_SHIFT; + length = tmp & MV_U3D_XFERSTATUS_TRB_LENGTH_MASK; + + if (status == MV_U3D_COMPLETE_SUCCESS || + (status == MV_U3D_COMPLETE_SHORT_PACKET && + direction == MV_U3D_EP_DIR_OUT)) { + remaining_length += length; + actual -= remaining_length; + } else { + dev_err(u3d->dev, + "complete_tr error: ep=%d %s: error = 0x%x\n", + index >> 1, direction ? "SEND" : "RECV", + status); + retval = -EPROTO; + } + + list_del_init(&curr_trb->trb_list); + } + if (retval) + return retval; + + curr_req->req.actual = actual; + return 0; +} + +/* + * mv_u3d_done() - retire a request; caller blocked irqs + * @status : request status to be set, only works when + * request is still in progress. + */ +static +void mv_u3d_done(struct mv_u3d_ep *ep, struct mv_u3d_req *req, int status) +{ + struct mv_u3d *u3d = (struct mv_u3d *)ep->u3d; + + dev_dbg(u3d->dev, "mv_u3d_done: remove req->queue\n"); + /* Removed the req from ep queue */ + list_del_init(&req->queue); + + /* req.status should be set as -EINPROGRESS in ep_queue() */ + if (req->req.status == -EINPROGRESS) + req->req.status = status; + else + status = req->req.status; + + /* Free trb for the request */ + if (!req->chain) + dma_pool_free(u3d->trb_pool, + req->trb_head->trb_hw, req->trb_head->trb_dma); + else { + dma_unmap_single(ep->u3d->gadget.dev.parent, + (dma_addr_t)req->trb_head->trb_dma, + req->trb_count * sizeof(struct mv_u3d_trb_hw), + DMA_BIDIRECTIONAL); + kfree(req->trb_head->trb_hw); + } + kfree(req->trb_head); + + usb_gadget_unmap_request(&u3d->gadget, &req->req, mv_u3d_ep_dir(ep)); + + if (status && (status != -ESHUTDOWN)) { + dev_dbg(u3d->dev, "complete %s req %p stat %d len %u/%u", + ep->ep.name, &req->req, status, + req->req.actual, req->req.length); + } + + spin_unlock(&ep->u3d->lock); + /* + * complete() is from gadget layer, + * eg fsg->bulk_in_complete() + */ + if (req->req.complete) + req->req.complete(&ep->ep, &req->req); + + spin_lock(&ep->u3d->lock); +} + +static int mv_u3d_queue_trb(struct mv_u3d_ep *ep, struct mv_u3d_req *req) +{ + u32 tmp, direction; + struct mv_u3d *u3d; + struct mv_u3d_ep_context *ep_context; + int retval = 0; + + u3d = ep->u3d; + direction = mv_u3d_ep_dir(ep); + + /* ep0 in and out share the same ep context slot 1*/ + if (ep->ep_num == 0) + ep_context = &(u3d->ep_context[1]); + else + ep_context = &(u3d->ep_context[ep->ep_num * 2 + direction]); + + /* check if the pipe is empty or not */ + if (!list_empty(&ep->queue)) { + dev_err(u3d->dev, "add trb to non-empty queue!\n"); + retval = -ENOMEM; + WARN_ON(1); + } else { + ep_context->rsvd0 = cpu_to_le32(1); + ep_context->rsvd1 = 0; + + /* Configure the trb address and set the DCS bit. + * Both DCS bit and own bit in trb should be set. + */ + ep_context->trb_addr_lo = + cpu_to_le32(req->trb_head->trb_dma | DCS_ENABLE); + ep_context->trb_addr_hi = 0; + + /* Ensure that updates to the EP Context will + * occure before Ring Bell. + */ + wmb(); + + /* ring bell the ep */ + if (ep->ep_num == 0) + tmp = 0x1; + else + tmp = ep->ep_num * 2 + + ((direction == MV_U3D_EP_DIR_OUT) ? 0 : 1); + + iowrite32(tmp, &u3d->op_regs->doorbell); + } + return retval; +} + +static struct mv_u3d_trb *mv_u3d_build_trb_one(struct mv_u3d_req *req, + unsigned *length, dma_addr_t *dma) +{ + u32 temp; + unsigned int direction; + struct mv_u3d_trb *trb; + struct mv_u3d_trb_hw *trb_hw; + struct mv_u3d *u3d; + + /* how big will this transfer be? */ + *length = req->req.length - req->req.actual; + BUG_ON(*length > (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER); + + u3d = req->ep->u3d; + + trb = kzalloc(sizeof(*trb), GFP_ATOMIC); + if (!trb) { + dev_err(u3d->dev, "%s, trb alloc fail\n", __func__); + return NULL; + } + + /* + * Be careful that no _GFP_HIGHMEM is set, + * or we can not use dma_to_virt + * cannot use GFP_KERNEL in spin lock + */ + trb_hw = dma_pool_alloc(u3d->trb_pool, GFP_ATOMIC, dma); + if (!trb_hw) { + dev_err(u3d->dev, + "%s, dma_pool_alloc fail\n", __func__); + return NULL; + } + trb->trb_dma = *dma; + trb->trb_hw = trb_hw; + + /* initialize buffer page pointers */ + temp = (u32)(req->req.dma + req->req.actual); + + trb_hw->buf_addr_lo = cpu_to_le32(temp); + trb_hw->buf_addr_hi = 0; + trb_hw->trb_len = cpu_to_le32(*length); + trb_hw->ctrl.own = 1; + + if (req->ep->ep_num == 0) + trb_hw->ctrl.type = TYPE_DATA; + else + trb_hw->ctrl.type = TYPE_NORMAL; + + req->req.actual += *length; + + direction = mv_u3d_ep_dir(req->ep); + if (direction == MV_U3D_EP_DIR_IN) + trb_hw->ctrl.dir = 1; + else + trb_hw->ctrl.dir = 0; + + /* Enable interrupt for the last trb of a request */ + if (!req->req.no_interrupt) + trb_hw->ctrl.ioc = 1; + + trb_hw->ctrl.chain = 0; + + wmb(); + return trb; +} + +static int mv_u3d_build_trb_chain(struct mv_u3d_req *req, unsigned *length, + struct mv_u3d_trb *trb, int *is_last) +{ + u32 temp; + unsigned int direction; + struct mv_u3d *u3d; + + /* how big will this transfer be? */ + *length = min(req->req.length - req->req.actual, + (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER); + + u3d = req->ep->u3d; + + trb->trb_dma = 0; + + /* initialize buffer page pointers */ + temp = (u32)(req->req.dma + req->req.actual); + + trb->trb_hw->buf_addr_lo = cpu_to_le32(temp); + trb->trb_hw->buf_addr_hi = 0; + trb->trb_hw->trb_len = cpu_to_le32(*length); + trb->trb_hw->ctrl.own = 1; + + if (req->ep->ep_num == 0) + trb->trb_hw->ctrl.type = TYPE_DATA; + else + trb->trb_hw->ctrl.type = TYPE_NORMAL; + + req->req.actual += *length; + + direction = mv_u3d_ep_dir(req->ep); + if (direction == MV_U3D_EP_DIR_IN) + trb->trb_hw->ctrl.dir = 1; + else + trb->trb_hw->ctrl.dir = 0; + + /* zlp is needed if req->req.zero is set */ + if (req->req.zero) { + if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0) + *is_last = 1; + else + *is_last = 0; + } else if (req->req.length == req->req.actual) + *is_last = 1; + else + *is_last = 0; + + /* Enable interrupt for the last trb of a request */ + if (*is_last && !req->req.no_interrupt) + trb->trb_hw->ctrl.ioc = 1; + + if (*is_last) + trb->trb_hw->ctrl.chain = 0; + else { + trb->trb_hw->ctrl.chain = 1; + dev_dbg(u3d->dev, "chain trb\n"); + } + + wmb(); + + return 0; +} + +/* generate TRB linked list for a request + * usb controller only supports continous trb chain, + * that trb structure physical address should be continous. + */ +static int mv_u3d_req_to_trb(struct mv_u3d_req *req) +{ + unsigned count; + int is_last; + struct mv_u3d_trb *trb; + struct mv_u3d_trb_hw *trb_hw; + struct mv_u3d *u3d; + dma_addr_t dma; + unsigned length; + unsigned trb_num; + + u3d = req->ep->u3d; + + INIT_LIST_HEAD(&req->trb_list); + + length = req->req.length - req->req.actual; + /* normally the request transfer length is less than 16KB. + * we use buil_trb_one() to optimize it. + */ + if (length <= (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER) { + trb = mv_u3d_build_trb_one(req, &count, &dma); + list_add_tail(&trb->trb_list, &req->trb_list); + req->trb_head = trb; + req->trb_count = 1; + req->chain = 0; + } else { + trb_num = length / MV_U3D_EP_MAX_LENGTH_TRANSFER; + if (length % MV_U3D_EP_MAX_LENGTH_TRANSFER) + trb_num++; + + trb = kcalloc(trb_num, sizeof(*trb), GFP_ATOMIC); + if (!trb) { + dev_err(u3d->dev, + "%s, trb alloc fail\n", __func__); + return -ENOMEM; + } + + trb_hw = kcalloc(trb_num, sizeof(*trb_hw), GFP_ATOMIC); + if (!trb_hw) { + dev_err(u3d->dev, + "%s, trb_hw alloc fail\n", __func__); + return -ENOMEM; + } + + do { + trb->trb_hw = trb_hw; + if (mv_u3d_build_trb_chain(req, &count, + trb, &is_last)) { + dev_err(u3d->dev, + "%s, mv_u3d_build_trb_chain fail\n", + __func__); + return -EIO; + } + + list_add_tail(&trb->trb_list, &req->trb_list); + req->trb_count++; + trb++; + trb_hw++; + } while (!is_last); + + req->trb_head = list_entry(req->trb_list.next, + struct mv_u3d_trb, trb_list); + req->trb_head->trb_dma = dma_map_single(u3d->gadget.dev.parent, + req->trb_head->trb_hw, + trb_num * sizeof(*trb_hw), + DMA_BIDIRECTIONAL); + + req->chain = 1; + } + + return 0; +} + +static int +mv_u3d_start_queue(struct mv_u3d_ep *ep) +{ + struct mv_u3d *u3d = ep->u3d; + struct mv_u3d_req *req; + int ret; + + if (!list_empty(&ep->req_list) && !ep->processing) + req = list_entry(ep->req_list.next, struct mv_u3d_req, list); + else + return 0; + + ep->processing = 1; + + /* set up dma mapping */ + ret = usb_gadget_map_request(&u3d->gadget, &req->req, + mv_u3d_ep_dir(ep)); + if (ret) + return ret; + + req->req.status = -EINPROGRESS; + req->req.actual = 0; + req->trb_count = 0; + + /* build trbs and push them to device queue */ + if (!mv_u3d_req_to_trb(req)) { + ret = mv_u3d_queue_trb(ep, req); + if (ret) { + ep->processing = 0; + return ret; + } + } else { + ep->processing = 0; + dev_err(u3d->dev, "%s, mv_u3d_req_to_trb fail\n", __func__); + return -ENOMEM; + } + + /* irq handler advances the queue */ + if (req) + list_add_tail(&req->queue, &ep->queue); + + return 0; +} + +static int mv_u3d_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + struct mv_u3d *u3d; + struct mv_u3d_ep *ep; + struct mv_u3d_ep_context *ep_context; + u16 max = 0; + unsigned maxburst = 0; + u32 epxcr, direction; + + if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) + return -EINVAL; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + u3d = ep->u3d; + + if (!u3d->driver || u3d->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + direction = mv_u3d_ep_dir(ep); + max = le16_to_cpu(desc->wMaxPacketSize); + + if (!_ep->maxburst) + _ep->maxburst = 1; + maxburst = _ep->maxburst; + + /* Get the endpoint context address */ + ep_context = (struct mv_u3d_ep_context *)ep->ep_context; + + /* Set the max burst size */ + switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + case USB_ENDPOINT_XFER_BULK: + if (maxburst > 16) { + dev_dbg(u3d->dev, + "max burst should not be greater " + "than 16 on bulk ep\n"); + maxburst = 1; + _ep->maxburst = maxburst; + } + dev_dbg(u3d->dev, + "maxburst: %d on bulk %s\n", maxburst, ep->name); + break; + case USB_ENDPOINT_XFER_CONTROL: + /* control transfer only supports maxburst as one */ + maxburst = 1; + _ep->maxburst = maxburst; + break; + case USB_ENDPOINT_XFER_INT: + if (maxburst != 1) { + dev_dbg(u3d->dev, + "max burst should be 1 on int ep " + "if transfer size is not 1024\n"); + maxburst = 1; + _ep->maxburst = maxburst; + } + break; + case USB_ENDPOINT_XFER_ISOC: + if (maxburst != 1) { + dev_dbg(u3d->dev, + "max burst should be 1 on isoc ep " + "if transfer size is not 1024\n"); + maxburst = 1; + _ep->maxburst = maxburst; + } + break; + default: + goto en_done; + } + + ep->ep.maxpacket = max; + ep->ep.desc = desc; + ep->enabled = 1; + + /* Enable the endpoint for Rx or Tx and set the endpoint type */ + if (direction == MV_U3D_EP_DIR_OUT) { + epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + epxcr |= MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + udelay(5); + epxcr &= ~MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + + epxcr = ((max << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) + | ((maxburst - 1) << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)); + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); + } else { + epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + epxcr |= MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + udelay(5); + epxcr &= ~MV_U3D_EPXCR_EP_INIT; + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + + epxcr = ((max << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) + | ((maxburst - 1) << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) + | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)); + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr1); + } + + return 0; +en_done: + return -EINVAL; +} + +static int mv_u3d_ep_disable(struct usb_ep *_ep) +{ + struct mv_u3d *u3d; + struct mv_u3d_ep *ep; + struct mv_u3d_ep_context *ep_context; + u32 epxcr, direction; + + if (!_ep) + return -EINVAL; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + if (!ep->ep.desc) + return -EINVAL; + + u3d = ep->u3d; + + /* Get the endpoint context address */ + ep_context = ep->ep_context; + + direction = mv_u3d_ep_dir(ep); + + /* nuke all pending requests (does flush) */ + mv_u3d_nuke(ep, -ESHUTDOWN); + + /* Disable the endpoint for Rx or Tx and reset the endpoint type */ + if (direction == MV_U3D_EP_DIR_OUT) { + epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); + epxcr &= ~((1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | USB_ENDPOINT_XFERTYPE_MASK); + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); + } else { + epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr1); + epxcr &= ~((1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) + | USB_ENDPOINT_XFERTYPE_MASK); + iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr1); + } + + ep->enabled = 0; + + ep->ep.desc = NULL; + return 0; +} + +static struct usb_request * +mv_u3d_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) +{ + struct mv_u3d_req *req = NULL; + + req = kzalloc(sizeof *req, gfp_flags); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + + return &req->req; +} + +static void mv_u3d_free_request(struct usb_ep *_ep, struct usb_request *_req) +{ + struct mv_u3d_req *req = container_of(_req, struct mv_u3d_req, req); + + kfree(req); +} + +static void mv_u3d_ep_fifo_flush(struct usb_ep *_ep) +{ + struct mv_u3d *u3d; + u32 direction; + struct mv_u3d_ep *ep = container_of(_ep, struct mv_u3d_ep, ep); + unsigned int loops; + u32 tmp; + + /* if endpoint is not enabled, cannot flush endpoint */ + if (!ep->enabled) + return; + + u3d = ep->u3d; + direction = mv_u3d_ep_dir(ep); + + /* ep0 need clear bit after flushing fifo. */ + if (!ep->ep_num) { + if (direction == MV_U3D_EP_DIR_OUT) { + tmp = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); + tmp |= MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); + udelay(10); + tmp &= ~MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); + } else { + tmp = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); + tmp |= MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); + udelay(10); + tmp &= ~MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); + } + return; + } + + if (direction == MV_U3D_EP_DIR_OUT) { + tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + tmp |= MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + + /* Wait until flushing completed */ + loops = LOOPS(MV_U3D_FLUSH_TIMEOUT); + while (ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0) & + MV_U3D_EPXCR_EP_FLUSH) { + /* + * EP_FLUSH bit should be cleared to indicate this + * operation is complete + */ + if (loops == 0) { + dev_dbg(u3d->dev, + "EP FLUSH TIMEOUT for ep%d%s\n", ep->ep_num, + direction ? "in" : "out"); + return; + } + loops--; + udelay(LOOPS_USEC); + } + } else { /* EP_DIR_IN */ + tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + tmp |= MV_U3D_EPXCR_EP_FLUSH; + iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + + /* Wait until flushing completed */ + loops = LOOPS(MV_U3D_FLUSH_TIMEOUT); + while (ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0) & + MV_U3D_EPXCR_EP_FLUSH) { + /* + * EP_FLUSH bit should be cleared to indicate this + * operation is complete + */ + if (loops == 0) { + dev_dbg(u3d->dev, + "EP FLUSH TIMEOUT for ep%d%s\n", ep->ep_num, + direction ? "in" : "out"); + return; + } + loops--; + udelay(LOOPS_USEC); + } + } +} + +/* queues (submits) an I/O request to an endpoint */ +static int +mv_u3d_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) +{ + struct mv_u3d_ep *ep; + struct mv_u3d_req *req; + struct mv_u3d *u3d; + unsigned long flags; + int is_first_req = 0; + + if (unlikely(!_ep || !_req)) + return -EINVAL; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + u3d = ep->u3d; + + req = container_of(_req, struct mv_u3d_req, req); + + if (!ep->ep_num + && u3d->ep0_state == MV_U3D_STATUS_STAGE + && !_req->length) { + dev_dbg(u3d->dev, "ep0 status stage\n"); + u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; + return 0; + } + + dev_dbg(u3d->dev, "%s: %s, req: 0x%x\n", + __func__, _ep->name, (u32)req); + + /* catch various bogus parameters */ + if (!req->req.complete || !req->req.buf + || !list_empty(&req->queue)) { + dev_err(u3d->dev, + "%s, bad params, _req: 0x%x," + "req->req.complete: 0x%x, req->req.buf: 0x%x," + "list_empty: 0x%x\n", + __func__, (u32)_req, + (u32)req->req.complete, (u32)req->req.buf, + (u32)list_empty(&req->queue)); + return -EINVAL; + } + if (unlikely(!ep->ep.desc)) { + dev_err(u3d->dev, "%s, bad ep\n", __func__); + return -EINVAL; + } + if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + if (req->req.length > ep->ep.maxpacket) + return -EMSGSIZE; + } + + if (!u3d->driver || u3d->gadget.speed == USB_SPEED_UNKNOWN) { + dev_err(u3d->dev, + "bad params of driver/speed\n"); + return -ESHUTDOWN; + } + + req->ep = ep; + + /* Software list handles usb request. */ + spin_lock_irqsave(&ep->req_lock, flags); + is_first_req = list_empty(&ep->req_list); + list_add_tail(&req->list, &ep->req_list); + spin_unlock_irqrestore(&ep->req_lock, flags); + if (!is_first_req) { + dev_dbg(u3d->dev, "list is not empty\n"); + return 0; + } + + dev_dbg(u3d->dev, "call mv_u3d_start_queue from usb_ep_queue\n"); + spin_lock_irqsave(&u3d->lock, flags); + mv_u3d_start_queue(ep); + spin_unlock_irqrestore(&u3d->lock, flags); + return 0; +} + +/* dequeues (cancels, unlinks) an I/O request from an endpoint */ +static int mv_u3d_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct mv_u3d_ep *ep; + struct mv_u3d_req *req; + struct mv_u3d *u3d; + struct mv_u3d_ep_context *ep_context; + struct mv_u3d_req *next_req; + + unsigned long flags; + int ret = 0; + + if (!_ep || !_req) + return -EINVAL; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + u3d = ep->u3d; + + spin_lock_irqsave(&ep->u3d->lock, flags); + + /* make sure it's actually queued on this endpoint */ + list_for_each_entry(req, &ep->queue, queue) { + if (&req->req == _req) + break; + } + if (&req->req != _req) { + ret = -EINVAL; + goto out; + } + + /* The request is in progress, or completed but not dequeued */ + if (ep->queue.next == &req->queue) { + _req->status = -ECONNRESET; + mv_u3d_ep_fifo_flush(_ep); + + /* The request isn't the last request in this ep queue */ + if (req->queue.next != &ep->queue) { + dev_dbg(u3d->dev, + "it is the last request in this ep queue\n"); + ep_context = ep->ep_context; + next_req = list_entry(req->queue.next, + struct mv_u3d_req, queue); + + /* Point first TRB of next request to the EP context. */ + iowrite32((u32) next_req->trb_head, + &ep_context->trb_addr_lo); + } else { + struct mv_u3d_ep_context *ep_context; + ep_context = ep->ep_context; + ep_context->trb_addr_lo = 0; + ep_context->trb_addr_hi = 0; + } + + } else + WARN_ON(1); + + mv_u3d_done(ep, req, -ECONNRESET); + + /* remove the req from the ep req list */ + if (!list_empty(&ep->req_list)) { + struct mv_u3d_req *curr_req; + curr_req = list_entry(ep->req_list.next, + struct mv_u3d_req, list); + if (curr_req == req) { + list_del_init(&req->list); + ep->processing = 0; + } + } + +out: + spin_unlock_irqrestore(&ep->u3d->lock, flags); + return ret; +} + +static void +mv_u3d_ep_set_stall(struct mv_u3d *u3d, u8 ep_num, u8 direction, int stall) +{ + u32 tmp; + struct mv_u3d_ep *ep = u3d->eps; + + dev_dbg(u3d->dev, "%s\n", __func__); + if (direction == MV_U3D_EP_DIR_OUT) { + tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + if (stall) + tmp |= MV_U3D_EPXCR_EP_HALT; + else + tmp &= ~MV_U3D_EPXCR_EP_HALT; + iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); + } else { + tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + if (stall) + tmp |= MV_U3D_EPXCR_EP_HALT; + else + tmp &= ~MV_U3D_EPXCR_EP_HALT; + iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); + } +} + +static int mv_u3d_ep_set_halt_wedge(struct usb_ep *_ep, int halt, int wedge) +{ + struct mv_u3d_ep *ep; + unsigned long flags = 0; + int status = 0; + struct mv_u3d *u3d; + + ep = container_of(_ep, struct mv_u3d_ep, ep); + u3d = ep->u3d; + if (!ep->ep.desc) { + status = -EINVAL; + goto out; + } + + if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + status = -EOPNOTSUPP; + goto out; + } + + /* + * Attempt to halt IN ep will fail if any transfer requests + * are still queue + */ + if (halt && (mv_u3d_ep_dir(ep) == MV_U3D_EP_DIR_IN) + && !list_empty(&ep->queue)) { + status = -EAGAIN; + goto out; + } + + spin_lock_irqsave(&ep->u3d->lock, flags); + mv_u3d_ep_set_stall(u3d, ep->ep_num, mv_u3d_ep_dir(ep), halt); + if (halt && wedge) + ep->wedge = 1; + else if (!halt) + ep->wedge = 0; + spin_unlock_irqrestore(&ep->u3d->lock, flags); + + if (ep->ep_num == 0) + u3d->ep0_dir = MV_U3D_EP_DIR_OUT; +out: + return status; +} + +static int mv_u3d_ep_set_halt(struct usb_ep *_ep, int halt) +{ + return mv_u3d_ep_set_halt_wedge(_ep, halt, 0); +} + +static int mv_u3d_ep_set_wedge(struct usb_ep *_ep) +{ + return mv_u3d_ep_set_halt_wedge(_ep, 1, 1); +} + +static struct usb_ep_ops mv_u3d_ep_ops = { + .enable = mv_u3d_ep_enable, + .disable = mv_u3d_ep_disable, + + .alloc_request = mv_u3d_alloc_request, + .free_request = mv_u3d_free_request, + + .queue = mv_u3d_ep_queue, + .dequeue = mv_u3d_ep_dequeue, + + .set_wedge = mv_u3d_ep_set_wedge, + .set_halt = mv_u3d_ep_set_halt, + .fifo_flush = mv_u3d_ep_fifo_flush, +}; + +static void mv_u3d_controller_stop(struct mv_u3d *u3d) +{ + u32 tmp; + + if (!u3d->clock_gating && u3d->vbus_valid_detect) + iowrite32(MV_U3D_INTR_ENABLE_VBUS_VALID, + &u3d->vuc_regs->intrenable); + else + iowrite32(0, &u3d->vuc_regs->intrenable); + iowrite32(~0x0, &u3d->vuc_regs->endcomplete); + iowrite32(~0x0, &u3d->vuc_regs->trbunderrun); + iowrite32(~0x0, &u3d->vuc_regs->trbcomplete); + iowrite32(~0x0, &u3d->vuc_regs->linkchange); + iowrite32(0x1, &u3d->vuc_regs->setuplock); + + /* Reset the RUN bit in the command register to stop USB */ + tmp = ioread32(&u3d->op_regs->usbcmd); + tmp &= ~MV_U3D_CMD_RUN_STOP; + iowrite32(tmp, &u3d->op_regs->usbcmd); + dev_dbg(u3d->dev, "after u3d_stop, USBCMD 0x%x\n", + ioread32(&u3d->op_regs->usbcmd)); +} + +static void mv_u3d_controller_start(struct mv_u3d *u3d) +{ + u32 usbintr; + u32 temp; + + /* enable link LTSSM state machine */ + temp = ioread32(&u3d->vuc_regs->ltssm); + temp |= MV_U3D_LTSSM_PHY_INIT_DONE; + iowrite32(temp, &u3d->vuc_regs->ltssm); + + /* Enable interrupts */ + usbintr = MV_U3D_INTR_ENABLE_LINK_CHG | MV_U3D_INTR_ENABLE_TXDESC_ERR | + MV_U3D_INTR_ENABLE_RXDESC_ERR | MV_U3D_INTR_ENABLE_TX_COMPLETE | + MV_U3D_INTR_ENABLE_RX_COMPLETE | MV_U3D_INTR_ENABLE_SETUP | + (u3d->vbus_valid_detect ? MV_U3D_INTR_ENABLE_VBUS_VALID : 0); + iowrite32(usbintr, &u3d->vuc_regs->intrenable); + + /* Enable ctrl ep */ + iowrite32(0x1, &u3d->vuc_regs->ctrlepenable); + + /* Set the Run bit in the command register */ + iowrite32(MV_U3D_CMD_RUN_STOP, &u3d->op_regs->usbcmd); + dev_dbg(u3d->dev, "after u3d_start, USBCMD 0x%x\n", + ioread32(&u3d->op_regs->usbcmd)); +} + +static int mv_u3d_controller_reset(struct mv_u3d *u3d) +{ + unsigned int loops; + u32 tmp; + + /* Stop the controller */ + tmp = ioread32(&u3d->op_regs->usbcmd); + tmp &= ~MV_U3D_CMD_RUN_STOP; + iowrite32(tmp, &u3d->op_regs->usbcmd); + + /* Reset the controller to get default values */ + iowrite32(MV_U3D_CMD_CTRL_RESET, &u3d->op_regs->usbcmd); + + /* wait for reset to complete */ + loops = LOOPS(MV_U3D_RESET_TIMEOUT); + while (ioread32(&u3d->op_regs->usbcmd) & MV_U3D_CMD_CTRL_RESET) { + if (loops == 0) { + dev_err(u3d->dev, + "Wait for RESET completed TIMEOUT\n"); + return -ETIMEDOUT; + } + loops--; + udelay(LOOPS_USEC); + } + + /* Configure the Endpoint Context Address */ + iowrite32(u3d->ep_context_dma, &u3d->op_regs->dcbaapl); + iowrite32(0, &u3d->op_regs->dcbaaph); + + return 0; +} + +static int mv_u3d_enable(struct mv_u3d *u3d) +{ + struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + int retval; + + if (u3d->active) + return 0; + + if (!u3d->clock_gating) { + u3d->active = 1; + return 0; + } + + dev_dbg(u3d->dev, "enable u3d\n"); + clk_enable(u3d->clk); + if (pdata->phy_init) { + retval = pdata->phy_init(u3d->phy_regs); + if (retval) { + dev_err(u3d->dev, + "init phy error %d\n", retval); + clk_disable(u3d->clk); + return retval; + } + } + u3d->active = 1; + + return 0; +} + +static void mv_u3d_disable(struct mv_u3d *u3d) +{ + struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + if (u3d->clock_gating && u3d->active) { + dev_dbg(u3d->dev, "disable u3d\n"); + if (pdata->phy_deinit) + pdata->phy_deinit(u3d->phy_regs); + clk_disable(u3d->clk); + u3d->active = 0; + } +} + +static int mv_u3d_vbus_session(struct usb_gadget *gadget, int is_active) +{ + struct mv_u3d *u3d; + unsigned long flags; + int retval = 0; + + u3d = container_of(gadget, struct mv_u3d, gadget); + + spin_lock_irqsave(&u3d->lock, flags); + + u3d->vbus_active = (is_active != 0); + dev_dbg(u3d->dev, "%s: softconnect %d, vbus_active %d\n", + __func__, u3d->softconnect, u3d->vbus_active); + /* + * 1. external VBUS detect: we can disable/enable clock on demand. + * 2. UDC VBUS detect: we have to enable clock all the time. + * 3. No VBUS detect: we have to enable clock all the time. + */ + if (u3d->driver && u3d->softconnect && u3d->vbus_active) { + retval = mv_u3d_enable(u3d); + if (retval == 0) { + /* + * after clock is disabled, we lost all the register + * context. We have to re-init registers + */ + mv_u3d_controller_reset(u3d); + mv_u3d_ep0_reset(u3d); + mv_u3d_controller_start(u3d); + } + } else if (u3d->driver && u3d->softconnect) { + if (!u3d->active) + goto out; + + /* stop all the transfer in queue*/ + mv_u3d_stop_activity(u3d, u3d->driver); + mv_u3d_controller_stop(u3d); + mv_u3d_disable(u3d); + } + +out: + spin_unlock_irqrestore(&u3d->lock, flags); + return retval; +} + +/* constrain controller's VBUS power usage + * This call is used by gadget drivers during SET_CONFIGURATION calls, + * reporting how much power the device may consume. For example, this + * could affect how quickly batteries are recharged. + * + * Returns zero on success, else negative errno. + */ +static int mv_u3d_vbus_draw(struct usb_gadget *gadget, unsigned mA) +{ + struct mv_u3d *u3d = container_of(gadget, struct mv_u3d, gadget); + + u3d->power = mA; + + return 0; +} + +static int mv_u3d_pullup(struct usb_gadget *gadget, int is_on) +{ + struct mv_u3d *u3d = container_of(gadget, struct mv_u3d, gadget); + unsigned long flags; + int retval = 0; + + spin_lock_irqsave(&u3d->lock, flags); + + dev_dbg(u3d->dev, "%s: softconnect %d, vbus_active %d\n", + __func__, u3d->softconnect, u3d->vbus_active); + u3d->softconnect = (is_on != 0); + if (u3d->driver && u3d->softconnect && u3d->vbus_active) { + retval = mv_u3d_enable(u3d); + if (retval == 0) { + /* + * after clock is disabled, we lost all the register + * context. We have to re-init registers + */ + mv_u3d_controller_reset(u3d); + mv_u3d_ep0_reset(u3d); + mv_u3d_controller_start(u3d); + } + } else if (u3d->driver && u3d->vbus_active) { + /* stop all the transfer in queue*/ + mv_u3d_stop_activity(u3d, u3d->driver); + mv_u3d_controller_stop(u3d); + mv_u3d_disable(u3d); + } + + spin_unlock_irqrestore(&u3d->lock, flags); + + return retval; +} + +static int mv_u3d_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) +{ + struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); + struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + unsigned long flags; + + if (u3d->driver) + return -EBUSY; + + spin_lock_irqsave(&u3d->lock, flags); + + if (!u3d->clock_gating) { + clk_enable(u3d->clk); + if (pdata->phy_init) + pdata->phy_init(u3d->phy_regs); + } + + /* hook up the driver ... */ + driver->driver.bus = NULL; + u3d->driver = driver; + u3d->gadget.dev.driver = &driver->driver; + + u3d->ep0_dir = USB_DIR_OUT; + + spin_unlock_irqrestore(&u3d->lock, flags); + + u3d->vbus_valid_detect = 1; + + return 0; +} + +static int mv_u3d_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) +{ + struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); + struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + unsigned long flags; + + u3d->vbus_valid_detect = 0; + spin_lock_irqsave(&u3d->lock, flags); + + /* enable clock to access controller register */ + clk_enable(u3d->clk); + if (pdata->phy_init) + pdata->phy_init(u3d->phy_regs); + + mv_u3d_controller_stop(u3d); + /* stop all usb activities */ + u3d->gadget.speed = USB_SPEED_UNKNOWN; + mv_u3d_stop_activity(u3d, driver); + mv_u3d_disable(u3d); + + if (pdata->phy_deinit) + pdata->phy_deinit(u3d->phy_regs); + clk_disable(u3d->clk); + + spin_unlock_irqrestore(&u3d->lock, flags); + + u3d->gadget.dev.driver = NULL; + u3d->driver = NULL; + + return 0; +} + +/* device controller usb_gadget_ops structure */ +static const struct usb_gadget_ops mv_u3d_ops = { + /* notify controller that VBUS is powered or not */ + .vbus_session = mv_u3d_vbus_session, + + /* constrain controller's VBUS power usage */ + .vbus_draw = mv_u3d_vbus_draw, + + .pullup = mv_u3d_pullup, + .udc_start = mv_u3d_start, + .udc_stop = mv_u3d_stop, +}; + +static int mv_u3d_eps_init(struct mv_u3d *u3d) +{ + struct mv_u3d_ep *ep; + char name[14]; + int i; + + /* initialize ep0, ep0 in/out use eps[1] */ + ep = &u3d->eps[1]; + ep->u3d = u3d; + strncpy(ep->name, "ep0", sizeof(ep->name)); + ep->ep.name = ep->name; + ep->ep.ops = &mv_u3d_ep_ops; + ep->wedge = 0; + ep->ep.maxpacket = MV_U3D_EP0_MAX_PKT_SIZE; + ep->ep_num = 0; + ep->ep.desc = &mv_u3d_ep0_desc; + INIT_LIST_HEAD(&ep->queue); + INIT_LIST_HEAD(&ep->req_list); + ep->ep_type = USB_ENDPOINT_XFER_CONTROL; + + /* add ep0 ep_context */ + ep->ep_context = &u3d->ep_context[1]; + + /* initialize other endpoints */ + for (i = 2; i < u3d->max_eps * 2; i++) { + ep = &u3d->eps[i]; + if (i & 1) { + snprintf(name, sizeof(name), "ep%din", i >> 1); + ep->direction = MV_U3D_EP_DIR_IN; + } else { + snprintf(name, sizeof(name), "ep%dout", i >> 1); + ep->direction = MV_U3D_EP_DIR_OUT; + } + ep->u3d = u3d; + strncpy(ep->name, name, sizeof(ep->name)); + ep->ep.name = ep->name; + + ep->ep.ops = &mv_u3d_ep_ops; + ep->ep.maxpacket = (unsigned short) ~0; + ep->ep_num = i / 2; + + INIT_LIST_HEAD(&ep->queue); + list_add_tail(&ep->ep.ep_list, &u3d->gadget.ep_list); + + INIT_LIST_HEAD(&ep->req_list); + spin_lock_init(&ep->req_lock); + ep->ep_context = &u3d->ep_context[i]; + } + + return 0; +} + +/* delete all endpoint requests, called with spinlock held */ +static void mv_u3d_nuke(struct mv_u3d_ep *ep, int status) +{ + /* endpoint fifo flush */ + mv_u3d_ep_fifo_flush(&ep->ep); + + while (!list_empty(&ep->queue)) { + struct mv_u3d_req *req = NULL; + req = list_entry(ep->queue.next, struct mv_u3d_req, queue); + mv_u3d_done(ep, req, status); + } +} + +/* stop all USB activities */ +static +void mv_u3d_stop_activity(struct mv_u3d *u3d, struct usb_gadget_driver *driver) +{ + struct mv_u3d_ep *ep; + + mv_u3d_nuke(&u3d->eps[1], -ESHUTDOWN); + + list_for_each_entry(ep, &u3d->gadget.ep_list, ep.ep_list) { + mv_u3d_nuke(ep, -ESHUTDOWN); + } + + /* report disconnect; the driver is already quiesced */ + if (driver) { + spin_unlock(&u3d->lock); + driver->disconnect(&u3d->gadget); + spin_lock(&u3d->lock); + } +} + +static void mv_u3d_irq_process_error(struct mv_u3d *u3d) +{ + /* Increment the error count */ + u3d->errors++; + dev_err(u3d->dev, "%s\n", __func__); +} + +static void mv_u3d_irq_process_link_change(struct mv_u3d *u3d) +{ + u32 linkchange; + + linkchange = ioread32(&u3d->vuc_regs->linkchange); + iowrite32(linkchange, &u3d->vuc_regs->linkchange); + + dev_dbg(u3d->dev, "linkchange: 0x%x\n", linkchange); + + if (linkchange & MV_U3D_LINK_CHANGE_LINK_UP) { + dev_dbg(u3d->dev, "link up: ltssm state: 0x%x\n", + ioread32(&u3d->vuc_regs->ltssmstate)); + + u3d->usb_state = USB_STATE_DEFAULT; + u3d->ep0_dir = MV_U3D_EP_DIR_OUT; + u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; + + /* set speed */ + u3d->gadget.speed = USB_SPEED_SUPER; + } + + if (linkchange & MV_U3D_LINK_CHANGE_SUSPEND) { + dev_dbg(u3d->dev, "link suspend\n"); + u3d->resume_state = u3d->usb_state; + u3d->usb_state = USB_STATE_SUSPENDED; + } + + if (linkchange & MV_U3D_LINK_CHANGE_RESUME) { + dev_dbg(u3d->dev, "link resume\n"); + u3d->usb_state = u3d->resume_state; + u3d->resume_state = 0; + } + + if (linkchange & MV_U3D_LINK_CHANGE_WRESET) { + dev_dbg(u3d->dev, "warm reset\n"); + u3d->usb_state = USB_STATE_POWERED; + } + + if (linkchange & MV_U3D_LINK_CHANGE_HRESET) { + dev_dbg(u3d->dev, "hot reset\n"); + u3d->usb_state = USB_STATE_DEFAULT; + } + + if (linkchange & MV_U3D_LINK_CHANGE_INACT) + dev_dbg(u3d->dev, "inactive\n"); + + if (linkchange & MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0) + dev_dbg(u3d->dev, "ss.disabled\n"); + + if (linkchange & MV_U3D_LINK_CHANGE_VBUS_INVALID) { + dev_dbg(u3d->dev, "vbus invalid\n"); + u3d->usb_state = USB_STATE_ATTACHED; + u3d->vbus_valid_detect = 1; + /* if external vbus detect is not supported, + * we handle it here. + */ + if (!u3d->vbus) { + spin_unlock(&u3d->lock); + mv_u3d_vbus_session(&u3d->gadget, 0); + spin_lock(&u3d->lock); + } + } +} + +static void mv_u3d_ch9setaddress(struct mv_u3d *u3d, + struct usb_ctrlrequest *setup) +{ + u32 tmp; + + if (u3d->usb_state != USB_STATE_DEFAULT) { + dev_err(u3d->dev, + "%s, cannot setaddr in this state (%d)\n", + __func__, u3d->usb_state); + goto err; + } + + u3d->dev_addr = (u8)setup->wValue; + + dev_dbg(u3d->dev, "%s: 0x%x\n", __func__, u3d->dev_addr); + + if (u3d->dev_addr > 127) { + dev_err(u3d->dev, + "%s, u3d address is wrong (out of range)\n", __func__); + u3d->dev_addr = 0; + goto err; + } + + /* update usb state */ + u3d->usb_state = USB_STATE_ADDRESS; + + /* set the new address */ + tmp = ioread32(&u3d->vuc_regs->devaddrtiebrkr); + tmp &= ~0x7F; + tmp |= (u32)u3d->dev_addr; + iowrite32(tmp, &u3d->vuc_regs->devaddrtiebrkr); + + return; +err: + mv_u3d_ep0_stall(u3d); +} + +static int mv_u3d_is_set_configuration(struct usb_ctrlrequest *setup) +{ + if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) + if (setup->bRequest == USB_REQ_SET_CONFIGURATION) + return 1; + + return 0; +} + +static void mv_u3d_handle_setup_packet(struct mv_u3d *u3d, u8 ep_num, + struct usb_ctrlrequest *setup) +{ + bool delegate = false; + + mv_u3d_nuke(&u3d->eps[ep_num * 2 + MV_U3D_EP_DIR_IN], -ESHUTDOWN); + + dev_dbg(u3d->dev, "SETUP %02x.%02x v%04x i%04x l%04x\n", + setup->bRequestType, setup->bRequest, + setup->wValue, setup->wIndex, setup->wLength); + + /* We process some stardard setup requests here */ + if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + switch (setup->bRequest) { + case USB_REQ_GET_STATUS: + delegate = true; + break; + + case USB_REQ_SET_ADDRESS: + mv_u3d_ch9setaddress(u3d, setup); + break; + + case USB_REQ_CLEAR_FEATURE: + delegate = true; + break; + + case USB_REQ_SET_FEATURE: + delegate = true; + break; + + default: + delegate = true; + } + } else + delegate = true; + + /* delegate USB standard requests to the gadget driver */ + if (delegate == true) { + /* USB requests handled by gadget */ + if (setup->wLength) { + /* DATA phase from gadget, STATUS phase from u3d */ + u3d->ep0_dir = (setup->bRequestType & USB_DIR_IN) + ? MV_U3D_EP_DIR_IN : MV_U3D_EP_DIR_OUT; + spin_unlock(&u3d->lock); + if (u3d->driver->setup(&u3d->gadget, + &u3d->local_setup_buff) < 0) { + dev_err(u3d->dev, "setup error!\n"); + mv_u3d_ep0_stall(u3d); + } + spin_lock(&u3d->lock); + } else { + /* no DATA phase, STATUS phase from gadget */ + u3d->ep0_dir = MV_U3D_EP_DIR_IN; + u3d->ep0_state = MV_U3D_STATUS_STAGE; + spin_unlock(&u3d->lock); + if (u3d->driver->setup(&u3d->gadget, + &u3d->local_setup_buff) < 0) + mv_u3d_ep0_stall(u3d); + spin_lock(&u3d->lock); + } + + if (mv_u3d_is_set_configuration(setup)) { + dev_dbg(u3d->dev, "u3d configured\n"); + u3d->usb_state = USB_STATE_CONFIGURED; + } + } +} + +static void mv_u3d_get_setup_data(struct mv_u3d *u3d, u8 ep_num, u8 *buffer_ptr) +{ + struct mv_u3d_ep_context *epcontext; + + epcontext = &u3d->ep_context[ep_num * 2 + MV_U3D_EP_DIR_IN]; + + /* Copy the setup packet to local buffer */ + memcpy(buffer_ptr, (u8 *) &epcontext->setup_buffer, 8); +} + +static void mv_u3d_irq_process_setup(struct mv_u3d *u3d) +{ + u32 tmp, i; + /* Process all Setup packet received interrupts */ + tmp = ioread32(&u3d->vuc_regs->setuplock); + if (tmp) { + for (i = 0; i < u3d->max_eps; i++) { + if (tmp & (1 << i)) { + mv_u3d_get_setup_data(u3d, i, + (u8 *)(&u3d->local_setup_buff)); + mv_u3d_handle_setup_packet(u3d, i, + &u3d->local_setup_buff); + } + } + } + + iowrite32(tmp, &u3d->vuc_regs->setuplock); +} + +static void mv_u3d_irq_process_tr_complete(struct mv_u3d *u3d) +{ + u32 tmp, bit_pos; + int i, ep_num = 0, direction = 0; + struct mv_u3d_ep *curr_ep; + struct mv_u3d_req *curr_req, *temp_req; + int status; + + tmp = ioread32(&u3d->vuc_regs->endcomplete); + + dev_dbg(u3d->dev, "tr_complete: ep: 0x%x\n", tmp); + if (!tmp) + return; + iowrite32(tmp, &u3d->vuc_regs->endcomplete); + + for (i = 0; i < u3d->max_eps * 2; i++) { + ep_num = i >> 1; + direction = i % 2; + + bit_pos = 1 << (ep_num + 16 * direction); + + if (!(bit_pos & tmp)) + continue; + + if (i == 0) + curr_ep = &u3d->eps[1]; + else + curr_ep = &u3d->eps[i]; + + /* remove req out of ep request list after completion */ + dev_dbg(u3d->dev, "tr comp: check req_list\n"); + spin_lock(&curr_ep->req_lock); + if (!list_empty(&curr_ep->req_list)) { + struct mv_u3d_req *req; + req = list_entry(curr_ep->req_list.next, + struct mv_u3d_req, list); + list_del_init(&req->list); + curr_ep->processing = 0; + } + spin_unlock(&curr_ep->req_lock); + + /* process the req queue until an uncomplete request */ + list_for_each_entry_safe(curr_req, temp_req, + &curr_ep->queue, queue) { + status = mv_u3d_process_ep_req(u3d, i, curr_req); + if (status) + break; + /* write back status to req */ + curr_req->req.status = status; + + /* ep0 request completion */ + if (ep_num == 0) { + mv_u3d_done(curr_ep, curr_req, 0); + break; + } else { + mv_u3d_done(curr_ep, curr_req, status); + } + } + + dev_dbg(u3d->dev, "call mv_u3d_start_queue from ep complete\n"); + mv_u3d_start_queue(curr_ep); + } +} + +static irqreturn_t mv_u3d_irq(int irq, void *dev) +{ + struct mv_u3d *u3d = (struct mv_u3d *)dev; + u32 status, intr; + u32 bridgesetting; + u32 trbunderrun; + + spin_lock(&u3d->lock); + + status = ioread32(&u3d->vuc_regs->intrcause); + intr = ioread32(&u3d->vuc_regs->intrenable); + status &= intr; + + if (status == 0) { + spin_unlock(&u3d->lock); + dev_err(u3d->dev, "irq error!\n"); + return IRQ_NONE; + } + + if (status & MV_U3D_USBINT_VBUS_VALID) { + bridgesetting = ioread32(&u3d->vuc_regs->bridgesetting); + if (bridgesetting & MV_U3D_BRIDGE_SETTING_VBUS_VALID) { + /* write vbus valid bit of bridge setting to clear */ + bridgesetting = MV_U3D_BRIDGE_SETTING_VBUS_VALID; + iowrite32(bridgesetting, &u3d->vuc_regs->bridgesetting); + dev_dbg(u3d->dev, "vbus valid\n"); + + u3d->usb_state = USB_STATE_POWERED; + u3d->vbus_valid_detect = 0; + /* if external vbus detect is not supported, + * we handle it here. + */ + if (!u3d->vbus) { + spin_unlock(&u3d->lock); + mv_u3d_vbus_session(&u3d->gadget, 1); + spin_lock(&u3d->lock); + } + } else + dev_err(u3d->dev, "vbus bit is not set\n"); + } + + /* RX data is already in the 16KB FIFO.*/ + if (status & MV_U3D_USBINT_UNDER_RUN) { + trbunderrun = ioread32(&u3d->vuc_regs->trbunderrun); + dev_err(u3d->dev, "under run, ep%d\n", trbunderrun); + iowrite32(trbunderrun, &u3d->vuc_regs->trbunderrun); + mv_u3d_irq_process_error(u3d); + } + + if (status & (MV_U3D_USBINT_RXDESC_ERR | MV_U3D_USBINT_TXDESC_ERR)) { + /* write one to clear */ + iowrite32(status & (MV_U3D_USBINT_RXDESC_ERR + | MV_U3D_USBINT_TXDESC_ERR), + &u3d->vuc_regs->intrcause); + dev_err(u3d->dev, "desc err 0x%x\n", status); + mv_u3d_irq_process_error(u3d); + } + + if (status & MV_U3D_USBINT_LINK_CHG) + mv_u3d_irq_process_link_change(u3d); + + if (status & MV_U3D_USBINT_TX_COMPLETE) + mv_u3d_irq_process_tr_complete(u3d); + + if (status & MV_U3D_USBINT_RX_COMPLETE) + mv_u3d_irq_process_tr_complete(u3d); + + if (status & MV_U3D_USBINT_SETUP) + mv_u3d_irq_process_setup(u3d); + + spin_unlock(&u3d->lock); + return IRQ_HANDLED; +} + +static void mv_u3d_gadget_release(struct device *dev) +{ + dev_dbg(dev, "%s\n", __func__); +} + +static __devexit int mv_u3d_remove(struct platform_device *dev) +{ + struct mv_u3d *u3d = platform_get_drvdata(dev); + + BUG_ON(u3d == NULL); + + usb_del_gadget_udc(&u3d->gadget); + + /* free memory allocated in probe */ + if (u3d->trb_pool) + dma_pool_destroy(u3d->trb_pool); + + if (u3d->ep_context) + dma_free_coherent(&dev->dev, u3d->ep_context_size, + u3d->ep_context, u3d->ep_context_dma); + + kfree(u3d->eps); + + if (u3d->irq) + free_irq(u3d->irq, &dev->dev); + + if (u3d->cap_regs) + iounmap(u3d->cap_regs); + u3d->cap_regs = NULL; + + kfree(u3d->status_req); + + clk_put(u3d->clk); + + device_unregister(&u3d->gadget.dev); + + platform_set_drvdata(dev, NULL); + + kfree(u3d); + + return 0; +} + +static int mv_u3d_probe(struct platform_device *dev) +{ + struct mv_u3d *u3d = NULL; + struct mv_usb_platform_data *pdata = dev->dev.platform_data; + int retval = 0; + struct resource *r; + size_t size; + + if (!dev->dev.platform_data) { + dev_err(&dev->dev, "missing platform_data\n"); + retval = -ENODEV; + goto err_pdata; + } + + u3d = kzalloc(sizeof(*u3d), GFP_KERNEL); + if (!u3d) { + dev_err(&dev->dev, "failed to allocate memory for u3d\n"); + retval = -ENOMEM; + goto err_alloc_private; + } + + spin_lock_init(&u3d->lock); + + platform_set_drvdata(dev, u3d); + + u3d->dev = &dev->dev; + u3d->vbus = pdata->vbus; + + u3d->clk = clk_get(&dev->dev, pdata->clkname[0]); + if (IS_ERR(u3d->clk)) { + retval = PTR_ERR(u3d->clk); + goto err_get_clk; + } + + r = platform_get_resource_byname(dev, IORESOURCE_MEM, "capregs"); + if (!r) { + dev_err(&dev->dev, "no I/O memory resource defined\n"); + retval = -ENODEV; + goto err_get_cap_regs; + } + + u3d->cap_regs = (struct mv_u3d_cap_regs __iomem *) + ioremap(r->start, resource_size(r)); + if (!u3d->cap_regs) { + dev_err(&dev->dev, "failed to map I/O memory\n"); + retval = -EBUSY; + goto err_map_cap_regs; + } else { + dev_dbg(&dev->dev, "cap_regs address: 0x%x/0x%x\n", + (unsigned int)r->start, (unsigned int)u3d->cap_regs); + } + + /* we will access controller register, so enable the u3d controller */ + clk_enable(u3d->clk); + + if (pdata->phy_init) { + retval = pdata->phy_init(u3d->phy_regs); + if (retval) { + dev_err(&dev->dev, "init phy error %d\n", retval); + goto err_u3d_enable; + } + } + + u3d->op_regs = (struct mv_u3d_op_regs __iomem *)((u32)u3d->cap_regs + + MV_U3D_USB3_OP_REGS_OFFSET); + + u3d->vuc_regs = (struct mv_u3d_vuc_regs __iomem *)((u32)u3d->cap_regs + + ioread32(&u3d->cap_regs->vuoff)); + + u3d->max_eps = 16; + + /* + * some platform will use usb to download image, it may not disconnect + * usb gadget before loading kernel. So first stop u3d here. + */ + mv_u3d_controller_stop(u3d); + iowrite32(0xFFFFFFFF, &u3d->vuc_regs->intrcause); + + if (pdata->phy_deinit) + pdata->phy_deinit(u3d->phy_regs); + clk_disable(u3d->clk); + + size = u3d->max_eps * sizeof(struct mv_u3d_ep_context) * 2; + size = (size + MV_U3D_EP_CONTEXT_ALIGNMENT - 1) + & ~(MV_U3D_EP_CONTEXT_ALIGNMENT - 1); + u3d->ep_context = dma_alloc_coherent(&dev->dev, size, + &u3d->ep_context_dma, GFP_KERNEL); + if (!u3d->ep_context) { + dev_err(&dev->dev, "allocate ep context memory failed\n"); + retval = -ENOMEM; + goto err_alloc_ep_context; + } + u3d->ep_context_size = size; + + /* create TRB dma_pool resource */ + u3d->trb_pool = dma_pool_create("u3d_trb", + &dev->dev, + sizeof(struct mv_u3d_trb_hw), + MV_U3D_TRB_ALIGNMENT, + MV_U3D_DMA_BOUNDARY); + + if (!u3d->trb_pool) { + retval = -ENOMEM; + goto err_alloc_trb_pool; + } + + size = u3d->max_eps * sizeof(struct mv_u3d_ep) * 2; + u3d->eps = kzalloc(size, GFP_KERNEL); + if (!u3d->eps) { + dev_err(&dev->dev, "allocate ep memory failed\n"); + retval = -ENOMEM; + goto err_alloc_eps; + } + + /* initialize ep0 status request structure */ + u3d->status_req = kzalloc(sizeof(struct mv_u3d_req) + 8, GFP_KERNEL); + if (!u3d->status_req) { + dev_err(&dev->dev, "allocate status_req memory failed\n"); + retval = -ENOMEM; + goto err_alloc_status_req; + } + INIT_LIST_HEAD(&u3d->status_req->queue); + + /* allocate a small amount of memory to get valid address */ + u3d->status_req->req.buf = (char *)u3d->status_req + + sizeof(struct mv_u3d_req); + u3d->status_req->req.dma = virt_to_phys(u3d->status_req->req.buf); + + u3d->resume_state = USB_STATE_NOTATTACHED; + u3d->usb_state = USB_STATE_ATTACHED; + u3d->ep0_dir = MV_U3D_EP_DIR_OUT; + u3d->remote_wakeup = 0; + + r = platform_get_resource(dev, IORESOURCE_IRQ, 0); + if (!r) { + dev_err(&dev->dev, "no IRQ resource defined\n"); + retval = -ENODEV; + goto err_get_irq; + } + u3d->irq = r->start; + if (request_irq(u3d->irq, mv_u3d_irq, + IRQF_DISABLED | IRQF_SHARED, driver_name, u3d)) { + u3d->irq = 0; + dev_err(&dev->dev, "Request irq %d for u3d failed\n", + u3d->irq); + retval = -ENODEV; + goto err_request_irq; + } + + /* initialize gadget structure */ + u3d->gadget.ops = &mv_u3d_ops; /* usb_gadget_ops */ + u3d->gadget.ep0 = &u3d->eps[1].ep; /* gadget ep0 */ + INIT_LIST_HEAD(&u3d->gadget.ep_list); /* ep_list */ + u3d->gadget.speed = USB_SPEED_UNKNOWN; /* speed */ + + /* the "gadget" abstracts/virtualizes the controller */ + dev_set_name(&u3d->gadget.dev, "gadget"); + u3d->gadget.dev.parent = &dev->dev; + u3d->gadget.dev.dma_mask = dev->dev.dma_mask; + u3d->gadget.dev.release = mv_u3d_gadget_release; + u3d->gadget.name = driver_name; /* gadget name */ + + retval = device_register(&u3d->gadget.dev); + if (retval) + goto err_register_gadget_device; + + mv_u3d_eps_init(u3d); + + /* external vbus detection */ + if (u3d->vbus) { + u3d->clock_gating = 1; + dev_err(&dev->dev, "external vbus detection\n"); + } + + if (!u3d->clock_gating) + u3d->vbus_active = 1; + + /* enable usb3 controller vbus detection */ + u3d->vbus_valid_detect = 1; + + retval = usb_add_gadget_udc(&dev->dev, &u3d->gadget); + if (retval) + goto err_unregister; + + dev_dbg(&dev->dev, "successful probe usb3 device %s clock gating.\n", + u3d->clock_gating ? "with" : "without"); + + return 0; + +err_unregister: + device_unregister(&u3d->gadget.dev); +err_register_gadget_device: + free_irq(u3d->irq, &dev->dev); +err_request_irq: +err_get_irq: + kfree(u3d->status_req); +err_alloc_status_req: + kfree(u3d->eps); +err_alloc_eps: + dma_pool_destroy(u3d->trb_pool); +err_alloc_trb_pool: + dma_free_coherent(&dev->dev, u3d->ep_context_size, + u3d->ep_context, u3d->ep_context_dma); +err_alloc_ep_context: + if (pdata->phy_deinit) + pdata->phy_deinit(u3d->phy_regs); + clk_disable(u3d->clk); +err_u3d_enable: + iounmap(u3d->cap_regs); +err_map_cap_regs: +err_get_cap_regs: +err_get_clk: + clk_put(u3d->clk); + platform_set_drvdata(dev, NULL); + kfree(u3d); +err_alloc_private: +err_pdata: + return retval; +} + +#ifdef CONFIG_PM +static int mv_u3d_suspend(struct device *dev) +{ + struct mv_u3d *u3d = dev_get_drvdata(dev); + + /* + * only cable is unplugged, usb can suspend. + * So do not care about clock_gating == 1, it is handled by + * vbus session. + */ + if (!u3d->clock_gating) { + mv_u3d_controller_stop(u3d); + + spin_lock_irq(&u3d->lock); + /* stop all usb activities */ + mv_u3d_stop_activity(u3d, u3d->driver); + spin_unlock_irq(&u3d->lock); + + mv_u3d_disable(u3d); + } + + return 0; +} + +static int mv_u3d_resume(struct device *dev) +{ + struct mv_u3d *u3d = dev_get_drvdata(dev); + int retval; + + if (!u3d->clock_gating) { + retval = mv_u3d_enable(u3d); + if (retval) + return retval; + + if (u3d->driver && u3d->softconnect) { + mv_u3d_controller_reset(u3d); + mv_u3d_ep0_reset(u3d); + mv_u3d_controller_start(u3d); + } + } + + return 0; +} + +SIMPLE_DEV_PM_OPS(mv_u3d_pm_ops, mv_u3d_suspend, mv_u3d_resume); +#endif + +static void mv_u3d_shutdown(struct platform_device *dev) +{ + struct mv_u3d *u3d = dev_get_drvdata(&dev->dev); + u32 tmp; + + tmp = ioread32(&u3d->op_regs->usbcmd); + tmp &= ~MV_U3D_CMD_RUN_STOP; + iowrite32(tmp, &u3d->op_regs->usbcmd); +} + +static struct platform_driver mv_u3d_driver = { + .probe = mv_u3d_probe, + .remove = __exit_p(mv_u3d_remove), + .shutdown = mv_u3d_shutdown, + .driver = { + .owner = THIS_MODULE, + .name = "mv-u3d", +#ifdef CONFIG_PM + .pm = &mv_u3d_pm_ops, +#endif + }, +}; + +module_platform_driver(mv_u3d_driver); +MODULE_ALIAS("platform:mv-u3d"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Yu Xu <yuxu@marvell.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 117a4bba1b8c..75db2c306cea 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -19,6 +19,7 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/init.h> #include <linux/timer.h> #include <linux/list.h> @@ -1381,7 +1382,7 @@ static int mv_udc_start(struct usb_gadget_driver *driver, return retval; } - if (udc->transceiver) { + if (!IS_ERR_OR_NULL(udc->transceiver)) { retval = otg_set_peripheral(udc->transceiver->otg, &udc->gadget); if (retval) { @@ -2107,7 +2108,7 @@ static int __devexit mv_udc_remove(struct platform_device *dev) * then vbus irq will not be requested in udc driver. */ if (udc->pdata && udc->pdata->vbus - && udc->clock_gating && udc->transceiver == NULL) + && udc->clock_gating && IS_ERR_OR_NULL(udc->transceiver)) free_irq(udc->pdata->vbus->irq, &dev->dev); /* free memory allocated in probe */ @@ -2180,7 +2181,7 @@ static int __devinit mv_udc_probe(struct platform_device *dev) #ifdef CONFIG_USB_OTG_UTILS if (pdata->mode == MV_USB_MODE_OTG) - udc->transceiver = usb_get_transceiver(); + udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); #endif udc->clknum = pdata->clknum; @@ -2325,7 +2326,7 @@ static int __devinit mv_udc_probe(struct platform_device *dev) eps_init(udc); /* VBUS detect: we can disable/enable clock on demand.*/ - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) udc->clock_gating = 1; else if (pdata->vbus) { udc->clock_gating = 1; @@ -2369,7 +2370,7 @@ static int __devinit mv_udc_probe(struct platform_device *dev) err_unregister: if (udc->pdata && udc->pdata->vbus - && udc->clock_gating && udc->transceiver == NULL) + && udc->clock_gating && IS_ERR_OR_NULL(udc->transceiver)) free_irq(pdata->vbus->irq, &dev->dev); device_unregister(&udc->gadget.dev); err_free_irq: @@ -2404,7 +2405,7 @@ static int mv_udc_suspend(struct device *_dev) struct mv_udc *udc = the_controller; /* if OTG is enabled, the following will be done in OTG driver*/ - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) return 0; if (udc->pdata->vbus && udc->pdata->vbus->poll) @@ -2437,7 +2438,7 @@ static int mv_udc_resume(struct device *_dev) int retval; /* if OTG is enabled, the following will be done in OTG driver*/ - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) return 0; if (!udc->clock_gating) { diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index 89cbd2b22ab0..f9132ada53b5 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -35,10 +35,11 @@ #include <linux/usb/otg.h> #include <linux/dma-mapping.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/prefetch.h> +#include <linux/io.h> #include <asm/byteorder.h> -#include <asm/io.h> #include <asm/irq.h> #include <asm/unaligned.h> #include <asm/mach-types.h> @@ -60,11 +61,6 @@ #define DRIVER_DESC "OMAP UDC driver" #define DRIVER_VERSION "4 October 2004" -#define DMA_ADDR_INVALID (~(dma_addr_t)0) - -#define OMAP2_DMA_CH(ch) (((ch) - 1) << 1) -#define OMAP24XX_DMA(name, ch) (OMAP24XX_DMA_##name + OMAP2_DMA_CH(ch)) - /* * The OMAP UDC needs _very_ early endpoint setup: before enabling the * D+ pullup to allow enumeration. That's too early for the gadget @@ -88,14 +84,14 @@ #ifdef USE_ISO static unsigned fifo_mode = 3; #else -static unsigned fifo_mode = 0; +static unsigned fifo_mode; #endif /* "modprobe omap_udc fifo_mode=42", or else as a kernel * boot parameter "omap_udc:fifo_mode=42" */ -module_param (fifo_mode, uint, 0); -MODULE_PARM_DESC (fifo_mode, "endpoint configuration"); +module_param(fifo_mode, uint, 0); +MODULE_PARM_DESC(fifo_mode, "endpoint configuration"); #ifdef USE_DMA static bool use_dma = 1; @@ -103,8 +99,8 @@ static bool use_dma = 1; /* "modprobe omap_udc use_dma=y", or else as a kernel * boot parameter "omap_udc:use_dma=y" */ -module_param (use_dma, bool, 0); -MODULE_PARM_DESC (use_dma, "enable/disable DMA"); +module_param(use_dma, bool, 0); +MODULE_PARM_DESC(use_dma, "enable/disable DMA"); #else /* !USE_DMA */ /* save a bit of code */ @@ -112,8 +108,8 @@ MODULE_PARM_DESC (use_dma, "enable/disable DMA"); #endif /* !USE_DMA */ -static const char driver_name [] = "omap_udc"; -static const char driver_desc [] = DRIVER_DESC; +static const char driver_name[] = "omap_udc"; +static const char driver_desc[] = DRIVER_DESC; /*-------------------------------------------------------------------------*/ @@ -251,7 +247,7 @@ static int omap_ep_disable(struct usb_ep *_ep) spin_lock_irqsave(&ep->udc->lock, flags); ep->ep.desc = NULL; - nuke (ep, -ESHUTDOWN); + nuke(ep, -ESHUTDOWN); ep->ep.maxpacket = ep->maxpacket; ep->has_dma = 0; omap_writew(UDC_SET_HALT, UDC_CTRL); @@ -272,10 +268,11 @@ omap_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) struct omap_req *req; req = kzalloc(sizeof(*req), gfp_flags); - if (req) { - req->req.dma = DMA_ADDR_INVALID; - INIT_LIST_HEAD (&req->queue); - } + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + return &req->req; } @@ -284,8 +281,7 @@ omap_free_request(struct usb_ep *ep, struct usb_request *_req) { struct omap_req *req = container_of(_req, struct omap_req, req); - if (_req) - kfree (req); + kfree(req); } /*-------------------------------------------------------------------------*/ @@ -293,6 +289,7 @@ omap_free_request(struct usb_ep *ep, struct usb_request *_req) static void done(struct omap_ep *ep, struct omap_req *req, int status) { + struct omap_udc *udc = ep->udc; unsigned stopped = ep->stopped; list_del_init(&req->queue); @@ -302,22 +299,9 @@ done(struct omap_ep *ep, struct omap_req *req, int status) else status = req->req.status; - if (use_dma && ep->has_dma) { - if (req->mapped) { - dma_unmap_single(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - (ep->bEndpointAddress & USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } else - dma_sync_single_for_cpu(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - (ep->bEndpointAddress & USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - } + if (use_dma && ep->has_dma) + usb_gadget_unmap_request(&udc->gadget, &req->req, + (ep->bEndpointAddress & USB_DIR_IN)); #ifndef USB_TRACE if (status && status != -ESHUTDOWN) @@ -365,10 +349,10 @@ write_packet(u8 *buf, struct omap_req *req, unsigned max) return len; } -// FIXME change r/w fifo calling convention +/* FIXME change r/w fifo calling convention */ -// return: 0 = still running, 1 = completed, negative = errno +/* return: 0 = still running, 1 = completed, negative = errno */ static int write_fifo(struct omap_ep *ep, struct omap_req *req) { u8 *buf; @@ -430,7 +414,7 @@ read_packet(u8 *buf, struct omap_req *req, unsigned avail) return len; } -// return: 0 = still running, 1 = queue empty, negative = errno +/* return: 0 = still running, 1 = queue empty, negative = errno */ static int read_fifo(struct omap_ep *ep, struct omap_req *req) { u8 *buf; @@ -537,12 +521,8 @@ static void next_in_dma(struct omap_ep *ep, struct omap_req *req) : OMAP_DMA_SYNC_ELEMENT; int dma_trigger = 0; - if (cpu_is_omap24xx()) - dma_trigger = OMAP24XX_DMA(USB_W2FC_TX0, ep->dma_channel); - /* measure length in either bytes or packets */ if ((cpu_is_omap16xx() && length <= UDC_TXN_TSC) - || (cpu_is_omap24xx() && length < ep->maxpacket) || (cpu_is_omap15xx() && length < ep->maxpacket)) { txdma_ctrl = UDC_TXN_EOT | length; omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8, @@ -601,28 +581,14 @@ static void next_out_dma(struct omap_ep *ep, struct omap_req *req) int dma_trigger = 0; u16 w; - if (cpu_is_omap24xx()) - dma_trigger = OMAP24XX_DMA(USB_W2FC_RX0, ep->dma_channel); - - /* NOTE: we filtered out "short reads" before, so we know - * the buffer has only whole numbers of packets. - * except MODE SELECT(6) sent the 24 bytes data in OMAP24XX DMA mode - */ - if (cpu_is_omap24xx() && packets < ep->maxpacket) { - omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8, - packets, 1, OMAP_DMA_SYNC_ELEMENT, - dma_trigger, 0); - req->dma_bytes = packets; - } else { - /* set up this DMA transfer, enable the fifo, start */ - packets /= ep->ep.maxpacket; - packets = min(packets, (unsigned)UDC_RXN_TC + 1); - req->dma_bytes = packets * ep->ep.maxpacket; - omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16, - ep->ep.maxpacket >> 1, packets, - OMAP_DMA_SYNC_ELEMENT, - dma_trigger, 0); - } + /* set up this DMA transfer, enable the fifo, start */ + packets /= ep->ep.maxpacket; + packets = min(packets, (unsigned)UDC_RXN_TC + 1); + req->dma_bytes = packets * ep->ep.maxpacket; + omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16, + ep->ep.maxpacket >> 1, packets, + OMAP_DMA_SYNC_ELEMENT, + dma_trigger, 0); omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF, OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual, 0, 0); @@ -684,7 +650,7 @@ static void dma_irq(struct omap_udc *udc, u16 irq_src) } omap_writew(UDC_TXN_DONE, UDC_IRQ_SRC); - if (!list_empty (&ep->queue)) { + if (!list_empty(&ep->queue)) { req = container_of(ep->queue.next, struct omap_req, queue); next_in_dma(ep, req); @@ -703,7 +669,7 @@ static void dma_irq(struct omap_udc *udc, u16 irq_src) } omap_writew(UDC_RXN_EOT, UDC_IRQ_SRC); - if (!list_empty (&ep->queue)) { + if (!list_empty(&ep->queue)) { req = container_of(ep->queue.next, struct omap_req, queue); next_out_dma(ep, req); @@ -761,10 +727,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel) ep->dma_channel = channel; if (is_in) { - if (cpu_is_omap24xx()) - dma_channel = OMAP24XX_DMA(USB_W2FC_TX0, channel); - else - dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel; + dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel; status = omap_request_dma(dma_channel, ep->ep.name, dma_error, ep, &ep->lch); if (status == 0) { @@ -781,11 +744,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel) 0, 0); } } else { - if (cpu_is_omap24xx()) - dma_channel = OMAP24XX_DMA(USB_W2FC_RX0, channel); - else - dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel; - + dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel; status = omap_request_dma(dma_channel, ep->ep.name, dma_error, ep, &ep->lch); if (status == 0) { @@ -809,7 +768,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel) omap_disable_dma_irq(ep->lch, OMAP_DMA_BLOCK_IRQ); /* channel type P: hw synch (fifo) */ - if (cpu_class_is_omap1() && !cpu_is_omap15xx()) + if (!cpu_is_omap15xx()) omap_set_dma_channel_mode(ep->lch, OMAP_DMA_LCH_P); } @@ -929,13 +888,11 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* this isn't bogus, but OMAP DMA isn't the only hardware to * have a hard time with partial packet reads... reject it. - * Except OMAP2 can handle the small packets. */ if (use_dma && ep->has_dma && ep->bEndpointAddress != 0 && (ep->bEndpointAddress & USB_DIR_IN) == 0 - && !cpu_class_is_omap2() && (req->req.length % ep->ep.maxpacket) != 0) { DBG("%s, no partial packet OUT reads\n", __func__); return -EMSGSIZE; @@ -945,26 +902,9 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) return -ESHUTDOWN; - if (use_dma && ep->has_dma) { - if (req->req.dma == DMA_ADDR_INVALID) { - req->req.dma = dma_map_single( - ep->udc->gadget.dev.parent, - req->req.buf, - req->req.length, - (ep->bEndpointAddress & USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 1; - } else { - dma_sync_single_for_device( - ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - (ep->bEndpointAddress & USB_DIR_IN) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 0; - } - } + if (use_dma && ep->has_dma) + usb_gadget_map_request(&udc->gadget, &req->req, + (ep->bEndpointAddress & USB_DIR_IN)); VDBG("%s queue req %p, len %d buf %p\n", ep->ep.name, _req, _req->length, _req->buf); @@ -985,7 +925,7 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) int is_in; if (ep->bEndpointAddress == 0) { - if (!udc->ep0_pending || !list_empty (&ep->queue)) { + if (!udc->ep0_pending || !list_empty(&ep->queue)) { spin_unlock_irqrestore(&udc->lock, flags); return -EL2HLT; } @@ -1012,7 +952,8 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) * always an IN ... even for IN transfers, * a weird case which seem to stall OMAP. */ - omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM); + omap_writew(UDC_EP_SEL | UDC_EP_DIR, + UDC_EP_NUM); omap_writew(UDC_CLR_EP, UDC_CTRL); omap_writew(UDC_SET_FIFO_EN, UDC_CTRL); omap_writew(UDC_EP_DIR, UDC_EP_NUM); @@ -1024,7 +965,8 @@ omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* non-empty DATA stage */ } else if (is_in) { - omap_writew(UDC_EP_SEL | UDC_EP_DIR, UDC_EP_NUM); + omap_writew(UDC_EP_SEL | UDC_EP_DIR, + UDC_EP_NUM); } else { if (udc->ep0_setup) goto irq_wait; @@ -1072,7 +1014,7 @@ static int omap_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) spin_lock_irqsave(&ep->udc->lock, flags); /* make sure it's actually queued on this endpoint */ - list_for_each_entry (req, &ep->queue, queue) { + list_for_each_entry(req, &ep->queue, queue) { if (&req->req == _req) break; } @@ -1179,8 +1121,8 @@ static struct usb_ep_ops omap_ep_ops = { .dequeue = omap_ep_dequeue, .set_halt = omap_ep_set_halt, - // fifo_status ... report bytes in fifo - // fifo_flush ... flush fifo + /* fifo_status ... report bytes in fifo */ + /* fifo_flush ... flush fifo */ }; /*-------------------------------------------------------------------------*/ @@ -1212,7 +1154,7 @@ static int omap_wakeup(struct usb_gadget *gadget) /* NOTE: non-OTG systems may use SRP TOO... */ } else if (!(udc->devstat & UDC_ATT)) { - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) retval = otg_start_srp(udc->transceiver->otg); } spin_unlock_irqrestore(&udc->lock, flags); @@ -1344,7 +1286,7 @@ static int omap_vbus_draw(struct usb_gadget *gadget, unsigned mA) struct omap_udc *udc; udc = container_of(gadget, struct omap_udc, gadget); - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) return usb_phy_set_power(udc->transceiver, mA); return -EOPNOTSUPP; } @@ -1410,7 +1352,7 @@ static void udc_quiesce(struct omap_udc *udc) udc->gadget.speed = USB_SPEED_UNKNOWN; nuke(&udc->ep[0], -ESHUTDOWN); - list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) nuke(ep, -ESHUTDOWN); } @@ -1526,7 +1468,8 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src) /* read next OUT packet of request, maybe * reactiviting the fifo; stall on errors. */ - if (!req || (stat = read_fifo(ep0, req)) < 0) { + stat = read_fifo(ep0, req); + if (!req || stat < 0) { omap_writew(UDC_STALL_CMD, UDC_SYSCON2); udc->ep0_pending = 0; stat = 0; @@ -1659,7 +1602,7 @@ static void ep0_irq(struct omap_udc *udc, u16 irq_src) /* this has rude side-effects (aborts) and * can't really work if DMA-IN is active */ - DBG("%s host set_halt, NYET \n", ep->name); + DBG("%s host set_halt, NYET\n", ep->name); goto do_stall; } use_ep(ep, 0); @@ -1750,7 +1693,7 @@ delegate: */ udc->ep0_setup = 1; spin_unlock(&udc->lock); - status = udc->driver->setup (&udc->gadget, &u.r); + status = udc->driver->setup(&udc->gadget, &u.r); spin_lock(&udc->lock); udc->ep0_setup = 0; } @@ -1793,12 +1736,12 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src) if (devstat & UDC_ATT) { udc->gadget.speed = USB_SPEED_FULL; VDBG("connect\n"); - if (!udc->transceiver) + if (IS_ERR_OR_NULL(udc->transceiver)) pullup_enable(udc); - // if (driver->connect) call it + /* if (driver->connect) call it */ } else if (udc->gadget.speed != USB_SPEED_UNKNOWN) { udc->gadget.speed = USB_SPEED_UNKNOWN; - if (!udc->transceiver) + if (IS_ERR_OR_NULL(udc->transceiver)) pullup_disable(udc); DBG("disconnect, gadget %s\n", udc->driver->driver.name); @@ -1827,7 +1770,7 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src) } if (change & UDC_SUS) { if (udc->gadget.speed != USB_SPEED_UNKNOWN) { - // FIXME tell isp1301 to suspend/resume (?) + /* FIXME tell isp1301 to suspend/resume (?) */ if (devstat & UDC_SUS) { VDBG("suspend\n"); update_otg(udc); @@ -1838,12 +1781,12 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src) udc->driver->suspend(&udc->gadget); spin_lock(&udc->lock); } - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) usb_phy_set_suspend( udc->transceiver, 1); } else { VDBG("resume\n"); - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) usb_phy_set_suspend( udc->transceiver, 0); if (udc->gadget.speed == USB_SPEED_FULL @@ -2030,7 +1973,7 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev) spin_lock_irqsave(&udc->lock, flags); /* handle all non-DMA ISO transfers */ - list_for_each_entry (ep, &udc->iso, iso) { + list_for_each_entry(ep, &udc->iso, iso) { u16 stat; struct omap_req *req; @@ -2089,15 +2032,11 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev) static inline int machine_without_vbus_sense(void) { - return (machine_is_omap_innovator() + return machine_is_omap_innovator() || machine_is_omap_osk() - || machine_is_omap_apollon() -#ifndef CONFIG_MACH_OMAP_H4_OTG - || machine_is_omap_h4() -#endif || machine_is_sx1() - || cpu_is_omap7xx() /* No known omap7xx boards with vbus sense */ - ); + /* No known omap7xx boards with vbus sense */ + || cpu_is_omap7xx(); } static int omap_udc_start(struct usb_gadget_driver *driver, @@ -2111,7 +2050,7 @@ static int omap_udc_start(struct usb_gadget_driver *driver, if (!udc) return -ENODEV; if (!driver - // FIXME if otg, check: driver->is_otg + /* FIXME if otg, check: driver->is_otg */ || driver->max_speed < USB_SPEED_FULL || !bind || !driver->setup) return -EINVAL; @@ -2123,7 +2062,7 @@ static int omap_udc_start(struct usb_gadget_driver *driver, } /* reset state */ - list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) { + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { ep->irqs = 0; if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) continue; @@ -2155,13 +2094,13 @@ static int omap_udc_start(struct usb_gadget_driver *driver, omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC); /* connect to bus through transceiver */ - if (udc->transceiver) { + if (!IS_ERR_OR_NULL(udc->transceiver)) { status = otg_set_peripheral(udc->transceiver->otg, &udc->gadget); if (status < 0) { ERR("can't bind to transceiver\n"); if (driver->unbind) { - driver->unbind (&udc->gadget); + driver->unbind(&udc->gadget); udc->gadget.dev.driver = NULL; udc->driver = NULL; } @@ -2169,9 +2108,9 @@ static int omap_udc_start(struct usb_gadget_driver *driver, } } else { if (can_pullup(udc)) - pullup_enable (udc); + pullup_enable(udc); else - pullup_disable (udc); + pullup_disable(udc); } /* boards that don't have VBUS sensing can't autogate 48MHz; @@ -2202,7 +2141,7 @@ static int omap_udc_stop(struct usb_gadget_driver *driver) if (machine_without_vbus_sense()) omap_vbus_session(&udc->gadget, 0); - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) (void) otg_set_peripheral(udc->transceiver->otg, NULL); else pullup_disable(udc); @@ -2230,7 +2169,7 @@ static int omap_udc_stop(struct usb_gadget_driver *driver) static const char proc_filename[] = "driver/udc"; #define FOURBITS "%s%s%s%s" -#define EIGHTBITS FOURBITS FOURBITS +#define EIGHTBITS "%s%s%s%s%s%s%s%s" static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) { @@ -2252,12 +2191,21 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) "\n%s %s%s%sirqs %ld stat %04x " EIGHTBITS FOURBITS "%s\n", ep->name, buf, ep->double_buf ? "dbuf " : "", - ({char *s; switch(ep->ackwait){ - case 0: s = ""; break; - case 1: s = "(ackw) "; break; - case 2: s = "(ackw2) "; break; - default: s = "(?) "; break; - } s;}), + ({ char *s; + switch (ep->ackwait) { + case 0: + s = ""; + break; + case 1: + s = "(ackw) "; + break; + case 2: + s = "(ackw2) "; + break; + default: + s = "(?) "; + break; + } s; }), ep->irqs, stat_flg, (stat_flg & UDC_NO_RXPACKET) ? "no_rxpacket " : "", (stat_flg & UDC_MISS_IN) ? "miss_in " : "", @@ -2273,10 +2221,10 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) (stat_flg & UDC_NON_ISO_FIFO_EMPTY) ? "fifo_empty " : "", (stat_flg & UDC_NON_ISO_FIFO_FULL) ? "fifo_full " : ""); - if (list_empty (&ep->queue)) + if (list_empty(&ep->queue)) seq_printf(s, "\t(queue empty)\n"); else - list_for_each_entry (req, &ep->queue, queue) { + list_for_each_entry(req, &ep->queue, queue) { unsigned length = req->req.actual; if (use_dma && buf[0]) { @@ -2294,11 +2242,16 @@ static void proc_ep_show(struct seq_file *s, struct omap_ep *ep) static char *trx_mode(unsigned m, int enabled) { switch (m) { - case 0: return enabled ? "*6wire" : "unused"; - case 1: return "4wire"; - case 2: return "3wire"; - case 3: return "6wire"; - default: return "unknown"; + case 0: + return enabled ? "*6wire" : "unused"; + case 1: + return "4wire"; + case 2: + return "3wire"; + case 3: + return "6wire"; + default: + return "unknown"; } } @@ -2308,12 +2261,9 @@ static int proc_otg_show(struct seq_file *s) u32 trans = 0; char *ctrl_name = "(UNKNOWN)"; - /* XXX This needs major revision for OMAP2+ */ tmp = omap_readl(OTG_REV); - if (cpu_class_is_omap1()) { - ctrl_name = "tranceiver_ctrl"; - trans = omap_readw(USB_TRANSCEIVER_CTRL); - } + ctrl_name = "tranceiver_ctrl"; + trans = omap_readw(USB_TRANSCEIVER_CTRL); seq_printf(s, "\nOTG rev %d.%d, %s %05x\n", tmp >> 4, tmp & 0xf, ctrl_name, trans); tmp = omap_readw(OTG_SYSCON_1); @@ -2333,7 +2283,7 @@ static int proc_otg_show(struct seq_file *s) " b_ase_brst=%d hmc=%d\n", tmp, (tmp & OTG_EN) ? " otg_en" : "", (tmp & USBX_SYNCHRO) ? " synchro" : "", - // much more SRP stuff + /* much more SRP stuff */ (tmp & SRP_DATA) ? " srp_data" : "", (tmp & SRP_VBUS) ? " srp_vbus" : "", (tmp & OTG_PADEN) ? " otg_paden" : "", @@ -2400,14 +2350,12 @@ static int proc_udc_show(struct seq_file *s, void *_) HMC, udc->transceiver ? udc->transceiver->label - : ((cpu_is_omap1710() || cpu_is_omap24xx()) + : (cpu_is_omap1710() ? "external" : "(none)")); - if (cpu_class_is_omap1()) { - seq_printf(s, "ULPD control %04x req %04x status %04x\n", - omap_readw(ULPD_CLOCK_CTRL), - omap_readw(ULPD_SOFT_REQ), - omap_readw(ULPD_STATUS_REQ)); - } + seq_printf(s, "ULPD control %04x req %04x status %04x\n", + omap_readw(ULPD_CLOCK_CTRL), + omap_readw(ULPD_SOFT_REQ), + omap_readw(ULPD_STATUS_REQ)); /* OTG controller registers */ if (!cpu_is_omap15xx()) @@ -2423,7 +2371,7 @@ static int proc_udc_show(struct seq_file *s, void *_) (tmp & UDC_SELF_PWR) ? " self_pwr" : "", (tmp & UDC_SOFF_DIS) ? " soff_dis" : "", (tmp & UDC_PULLUP_EN) ? " PULLUP" : ""); - // syscon2 is write-only + /* syscon2 is write-only */ /* UDC controller registers */ if (!(tmp & UDC_PULLUP_EN)) { @@ -2507,7 +2455,7 @@ static int proc_udc_show(struct seq_file *s, void *_) if (tmp & UDC_ATT) { proc_ep_show(s, &udc->ep[0]); if (tmp & UDC_ADD) { - list_for_each_entry (ep, &udc->gadget.ep_list, + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { if (ep->ep.desc) proc_ep_show(s, ep); @@ -2558,7 +2506,7 @@ static inline void remove_proc_file(void) {} * UDC_SYSCON_1.CFG_LOCK is set can now work. We won't use that * capability yet though. */ -static unsigned __init +static unsigned __devinit omap_ep_setup(char *name, u8 addr, u8 type, unsigned buf, unsigned maxp, int dbuf) { @@ -2576,14 +2524,29 @@ omap_ep_setup(char *name, u8 addr, u8 type, /* chip setup ... bit values are same for IN, OUT */ if (type == USB_ENDPOINT_XFER_ISOC) { switch (maxp) { - case 8: epn_rxtx = 0 << 12; break; - case 16: epn_rxtx = 1 << 12; break; - case 32: epn_rxtx = 2 << 12; break; - case 64: epn_rxtx = 3 << 12; break; - case 128: epn_rxtx = 4 << 12; break; - case 256: epn_rxtx = 5 << 12; break; - case 512: epn_rxtx = 6 << 12; break; - default: BUG(); + case 8: + epn_rxtx = 0 << 12; + break; + case 16: + epn_rxtx = 1 << 12; + break; + case 32: + epn_rxtx = 2 << 12; + break; + case 64: + epn_rxtx = 3 << 12; + break; + case 128: + epn_rxtx = 4 << 12; + break; + case 256: + epn_rxtx = 5 << 12; + break; + case 512: + epn_rxtx = 6 << 12; + break; + default: + BUG(); } epn_rxtx |= UDC_EPN_RX_ISO; dbuf = 1; @@ -2592,15 +2555,24 @@ omap_ep_setup(char *name, u8 addr, u8 type, * and ignored for PIO-IN on newer chips * (for more reliable behavior) */ - if (!use_dma || cpu_is_omap15xx() || cpu_is_omap24xx()) + if (!use_dma || cpu_is_omap15xx()) dbuf = 0; switch (maxp) { - case 8: epn_rxtx = 0 << 12; break; - case 16: epn_rxtx = 1 << 12; break; - case 32: epn_rxtx = 2 << 12; break; - case 64: epn_rxtx = 3 << 12; break; - default: BUG(); + case 8: + epn_rxtx = 0 << 12; + break; + case 16: + epn_rxtx = 1 << 12; + break; + case 32: + epn_rxtx = 2 << 12; + break; + case 64: + epn_rxtx = 3 << 12; + break; + default: + BUG(); } if (dbuf && addr) epn_rxtx |= UDC_EPN_RX_DB; @@ -2640,7 +2612,7 @@ omap_ep_setup(char *name, u8 addr, u8 type, ep->ep.name = ep->name; ep->ep.ops = &omap_ep_ops; ep->ep.maxpacket = ep->maxpacket = maxp; - list_add_tail (&ep->ep.ep_list, &udc->gadget.ep_list); + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); return buf; } @@ -2648,11 +2620,11 @@ omap_ep_setup(char *name, u8 addr, u8 type, static void omap_udc_release(struct device *dev) { complete(udc->done); - kfree (udc); + kfree(udc); udc = NULL; } -static int __init +static int __devinit omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv) { unsigned tmp, buf; @@ -2666,13 +2638,13 @@ omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv) omap_writew(0, UDC_TXDMA_CFG); /* UDC_PULLUP_EN gates the chip clock */ - // OTG_SYSCON_1 |= DEV_IDLE_EN; + /* OTG_SYSCON_1 |= DEV_IDLE_EN; */ udc = kzalloc(sizeof(*udc), GFP_KERNEL); if (!udc) return -ENOMEM; - spin_lock_init (&udc->lock); + spin_lock_init(&udc->lock); udc->gadget.ops = &omap_gadget_ops; udc->gadget.ep0 = &udc->ep[0].ep; @@ -2702,13 +2674,13 @@ omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv) omap_writew(0, UDC_EP_TX(tmp)); } -#define OMAP_BULK_EP(name,addr) \ +#define OMAP_BULK_EP(name, addr) \ buf = omap_ep_setup(name "-bulk", addr, \ USB_ENDPOINT_XFER_BULK, buf, 64, 1); -#define OMAP_INT_EP(name,addr, maxp) \ +#define OMAP_INT_EP(name, addr, maxp) \ buf = omap_ep_setup(name "-int", addr, \ USB_ENDPOINT_XFER_INT, buf, maxp, 0); -#define OMAP_ISO_EP(name,addr, maxp) \ +#define OMAP_ISO_EP(name, addr, maxp) \ buf = omap_ep_setup(name "-iso", addr, \ USB_ENDPOINT_XFER_ISOC, buf, maxp, 1); @@ -2789,15 +2761,18 @@ omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv) return 0; } -static int __init omap_udc_probe(struct platform_device *pdev) +static int __devinit omap_udc_probe(struct platform_device *pdev) { int status = -ENODEV; int hmc; struct usb_phy *xceiv = NULL; const char *type = NULL; struct omap_usb_config *config = pdev->dev.platform_data; - struct clk *dc_clk; - struct clk *hhc_clk; + struct clk *dc_clk = NULL; + struct clk *hhc_clk = NULL; + + if (cpu_is_omap7xx()) + use_dma = 0; /* NOTE: "knows" the order of the resources! */ if (!request_mem_region(pdev->resource[0].start, @@ -2817,16 +2792,6 @@ static int __init omap_udc_probe(struct platform_device *pdev) udelay(100); } - if (cpu_is_omap24xx()) { - dc_clk = clk_get(&pdev->dev, "usb_fck"); - hhc_clk = clk_get(&pdev->dev, "usb_l4_ick"); - BUG_ON(IS_ERR(dc_clk) || IS_ERR(hhc_clk)); - /* can't use omap_udc_enable_clock yet */ - clk_enable(dc_clk); - clk_enable(hhc_clk); - udelay(100); - } - if (cpu_is_omap7xx()) { dc_clk = clk_get(&pdev->dev, "usb_dc_ck"); hhc_clk = clk_get(&pdev->dev, "l3_ocpi_ck"); @@ -2866,8 +2831,8 @@ static int __init omap_udc_probe(struct platform_device *pdev) * use it. Except for OTG, we don't _need_ to talk to one; * but not having one probably means no VBUS detection. */ - xceiv = usb_get_transceiver(); - if (xceiv) + xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (!IS_ERR_OR_NULL(xceiv)) type = xceiv->label; else if (config->otg) { DBG("OTG requires external transceiver!\n"); @@ -2876,14 +2841,6 @@ static int __init omap_udc_probe(struct platform_device *pdev) hmc = HMC_1610; - if (cpu_is_omap24xx()) { - /* this could be transceiverless in one of the - * "we don't need to know" modes. - */ - type = "external"; - goto known; - } - switch (hmc) { case 0: /* POWERUP DEFAULT == 0 */ case 4: @@ -2899,7 +2856,7 @@ static int __init omap_udc_probe(struct platform_device *pdev) case 16: case 19: case 25: - if (!xceiv) { + if (IS_ERR_OR_NULL(xceiv)) { DBG("external transceiver not registered!\n"); type = "unknown"; } @@ -2922,16 +2879,16 @@ bad_on_1710: goto cleanup0; } } -known: + INFO("hmc mode %d, %s transceiver\n", hmc, type); /* a "gadget" abstracts/virtualizes the controller */ status = omap_udc_setup(pdev, xceiv); - if (status) { + if (status) goto cleanup0; - } + xceiv = NULL; - // "udc" is now valid + /* "udc" is now valid */ pullup_disable(udc); #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) udc->gadget.is_otg = (config->otg != 0); @@ -2945,7 +2902,7 @@ known: /* USB general purpose IRQ: ep0, state changes, dma, etc */ status = request_irq(pdev->resource[1].start, omap_udc_irq, - IRQF_SAMPLE_RANDOM, driver_name, udc); + 0, driver_name, udc); if (status != 0) { ERR("can't get irq %d, err %d\n", (int) pdev->resource[1].start, status); @@ -2954,7 +2911,7 @@ known: /* USB "non-iso" IRQ (PIO for all but ep0) */ status = request_irq(pdev->resource[2].start, omap_udc_pio_irq, - IRQF_SAMPLE_RANDOM, "omap_udc pio", udc); + 0, "omap_udc pio", udc); if (status != 0) { ERR("can't get irq %d, err %d\n", (int) pdev->resource[2].start, status); @@ -2976,16 +2933,6 @@ known: clk_disable(dc_clk); } - if (cpu_is_omap24xx()) { - udc->dc_clk = dc_clk; - udc->hhc_clk = hhc_clk; - /* FIXME OMAP2 don't release hhc & dc clock */ -#if 0 - clk_disable(hhc_clk); - clk_disable(dc_clk); -#endif - } - create_proc_file(); status = device_add(&udc->gadget.dev); if (status) @@ -3007,14 +2954,14 @@ cleanup2: free_irq(pdev->resource[1].start, udc); cleanup1: - kfree (udc); + kfree(udc); udc = NULL; cleanup0: - if (xceiv) - usb_put_transceiver(xceiv); + if (!IS_ERR_OR_NULL(xceiv)) + usb_put_phy(xceiv); - if (cpu_is_omap16xx() || cpu_is_omap24xx() || cpu_is_omap7xx()) { + if (cpu_is_omap16xx() || cpu_is_omap7xx()) { clk_disable(hhc_clk); clk_disable(dc_clk); clk_put(hhc_clk); @@ -3027,7 +2974,7 @@ cleanup0: return status; } -static int __exit omap_udc_remove(struct platform_device *pdev) +static int __devexit omap_udc_remove(struct platform_device *pdev) { DECLARE_COMPLETION_ONSTACK(done); @@ -3041,8 +2988,8 @@ static int __exit omap_udc_remove(struct platform_device *pdev) udc->done = &done; pullup_disable(udc); - if (udc->transceiver) { - usb_put_transceiver(udc->transceiver); + if (!IS_ERR_OR_NULL(udc->transceiver)) { + usb_put_phy(udc->transceiver); udc->transceiver = NULL; } omap_writew(0, UDC_SYSCON1); @@ -3112,7 +3059,8 @@ static int omap_udc_resume(struct platform_device *dev) /*-------------------------------------------------------------------------*/ static struct platform_driver udc_driver = { - .remove = __exit_p(omap_udc_remove), + .probe = omap_udc_probe, + .remove = __devexit_p(omap_udc_remove), .suspend = omap_udc_suspend, .resume = omap_udc_resume, .driver = { @@ -3121,27 +3069,7 @@ static struct platform_driver udc_driver = { }, }; -static int __init udc_init(void) -{ - /* Disable DMA for omap7xx -- it doesn't work right. */ - if (cpu_is_omap7xx()) - use_dma = 0; - - INFO("%s, version: " DRIVER_VERSION -#ifdef USE_ISO - " (iso)" -#endif - "%s\n", driver_desc, - use_dma ? " (dma)" : ""); - return platform_driver_probe(&udc_driver, omap_udc_probe); -} -module_init(udc_init); - -static void __exit udc_exit(void) -{ - platform_driver_unregister(&udc_driver); -} -module_exit(udc_exit); +module_platform_driver(udc_driver); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c index 1cfcc9ecbfbc..f4fb71c9ae08 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -2208,7 +2208,7 @@ static void pch_udc_complete_receiver(struct pch_udc_ep *ep) return; } if ((td->status & PCH_UDC_BUFF_STS) == PCH_UDC_BS_DMA_DONE) - if (td->status | PCH_UDC_DMA_LAST) { + if (td->status & PCH_UDC_DMA_LAST) { count = td->status & PCH_UDC_RXTX_BYTES; break; } diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index f7ff9e8e746a..53c093b941e5 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -21,6 +21,7 @@ #include <linux/ioport.h> #include <linux/types.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/init.h> @@ -993,7 +994,7 @@ static int pxa25x_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA) udc = container_of(_gadget, struct pxa25x_udc, gadget); - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) return usb_phy_set_power(udc->transceiver, mA); return -EOPNOTSUPP; } @@ -1299,7 +1300,7 @@ fail: DMSG("registered gadget driver '%s'\n", driver->driver.name); /* connect to bus through transceiver */ - if (dev->transceiver) { + if (!IS_ERR_OR_NULL(dev->transceiver)) { retval = otg_set_peripheral(dev->transceiver->otg, &dev->gadget); if (retval) { @@ -1359,7 +1360,7 @@ static int pxa25x_stop(struct usb_gadget_driver *driver) stop_activity(dev, driver); local_irq_enable(); - if (dev->transceiver) + if (!IS_ERR_OR_NULL(dev->transceiver)) (void) otg_set_peripheral(dev->transceiver->otg, NULL); driver->unbind(&dev->gadget); @@ -2159,7 +2160,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) dev->dev = &pdev->dev; dev->mach = pdev->dev.platform_data; - dev->transceiver = usb_get_transceiver(); + dev->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); if (gpio_is_valid(dev->mach->gpio_pullup)) { if ((retval = gpio_request(dev->mach->gpio_pullup, @@ -2237,8 +2238,8 @@ lubbock_fail0: if (gpio_is_valid(dev->mach->gpio_pullup)) gpio_free(dev->mach->gpio_pullup); err_gpio_pullup: - if (dev->transceiver) { - usb_put_transceiver(dev->transceiver); + if (!IS_ERR_OR_NULL(dev->transceiver)) { + usb_put_phy(dev->transceiver); dev->transceiver = NULL; } clk_put(dev->clk); @@ -2279,8 +2280,8 @@ static int __exit pxa25x_udc_remove(struct platform_device *pdev) clk_put(dev->clk); - if (dev->transceiver) { - usb_put_transceiver(dev->transceiver); + if (!IS_ERR_OR_NULL(dev->transceiver)) { + usb_put_phy(dev->transceiver); dev->transceiver = NULL; } diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 98acb3ab9e17..644b4305cb99 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/types.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/list.h> @@ -1573,7 +1574,7 @@ static int should_enable_udc(struct pxa_udc *udc) int put_on; put_on = ((udc->pullup_on) && (udc->driver)); - put_on &= ((udc->vbus_sensed) || (!udc->transceiver)); + put_on &= ((udc->vbus_sensed) || (IS_ERR_OR_NULL(udc->transceiver))); return put_on; } @@ -1594,7 +1595,7 @@ static int should_disable_udc(struct pxa_udc *udc) int put_off; put_off = ((!udc->pullup_on) || (!udc->driver)); - put_off |= ((!udc->vbus_sensed) && (udc->transceiver)); + put_off |= ((!udc->vbus_sensed) && (!IS_ERR_OR_NULL(udc->transceiver))); return put_off; } @@ -1665,7 +1666,7 @@ static int pxa_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA) struct pxa_udc *udc; udc = to_gadget_udc(_gadget); - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) return usb_phy_set_power(udc->transceiver, mA); return -EOPNOTSUPP; } @@ -1834,7 +1835,7 @@ static int pxa27x_udc_start(struct usb_gadget_driver *driver, dev_dbg(udc->dev, "registered gadget driver '%s'\n", driver->driver.name); - if (udc->transceiver) { + if (!IS_ERR_OR_NULL(udc->transceiver)) { retval = otg_set_peripheral(udc->transceiver->otg, &udc->gadget); if (retval) { @@ -1908,7 +1909,7 @@ static int pxa27x_udc_stop(struct usb_gadget_driver *driver) dev_info(udc->dev, "unregistered gadget driver '%s'\n", driver->driver.name); - if (udc->transceiver) + if (!IS_ERR_OR_NULL(udc->transceiver)) return otg_set_peripheral(udc->transceiver->otg, NULL); return 0; } @@ -2464,7 +2465,7 @@ static int __init pxa_udc_probe(struct platform_device *pdev) udc->dev = &pdev->dev; udc->mach = pdev->dev.platform_data; - udc->transceiver = usb_get_transceiver(); + udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); gpio = udc->mach->gpio_pullup; if (gpio_is_valid(gpio)) { @@ -2543,7 +2544,7 @@ static int __exit pxa_udc_remove(struct platform_device *_dev) if (gpio_is_valid(gpio)) gpio_free(gpio); - usb_put_transceiver(udc->transceiver); + usb_put_phy(udc->transceiver); udc->transceiver = NULL; platform_set_drvdata(_dev, NULL); diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index f4abb0ed9872..b13e0bb5f5b8 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -112,7 +112,6 @@ struct s3c_hsotg_ep { struct s3c_hsotg_req *req; struct dentry *debugfs; - spinlock_t lock; unsigned long total_data; unsigned int size_loaded; @@ -136,7 +135,6 @@ struct s3c_hsotg_ep { * @driver: USB gadget driver * @plat: The platform specific configuration data. * @regs: The memory area mapped for accessing registers. - * @regs_res: The resource that was allocated when claiming register space. * @irq: The IRQ number we are using * @supplies: Definition of USB power supplies * @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos. @@ -157,8 +155,9 @@ struct s3c_hsotg { struct usb_gadget_driver *driver; struct s3c_hsotg_plat *plat; + spinlock_t lock; + void __iomem *regs; - struct resource *regs_res; int irq; struct clk *clk; @@ -896,7 +895,6 @@ static int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, struct s3c_hsotg_req *hs_req = our_req(req); struct s3c_hsotg_ep *hs_ep = our_ep(ep); struct s3c_hsotg *hs = hs_ep->parent; - unsigned long irqflags; bool first; dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n", @@ -915,19 +913,30 @@ static int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, return ret; } - spin_lock_irqsave(&hs_ep->lock, irqflags); - first = list_empty(&hs_ep->queue); list_add_tail(&hs_req->queue, &hs_ep->queue); if (first) s3c_hsotg_start_req(hs, hs_ep, hs_req, false); - spin_unlock_irqrestore(&hs_ep->lock, irqflags); - return 0; } +static int s3c_hsotg_ep_queue_lock(struct usb_ep *ep, struct usb_request *req, + gfp_t gfp_flags) +{ + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hs = hs_ep->parent; + unsigned long flags = 0; + int ret = 0; + + spin_lock_irqsave(&hs->lock, flags); + ret = s3c_hsotg_ep_queue(ep, req, gfp_flags); + spin_unlock_irqrestore(&hs->lock, flags); + + return ret; +} + static void s3c_hsotg_ep_free_request(struct usb_ep *ep, struct usb_request *req) { @@ -1383,9 +1392,9 @@ static void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg, */ if (hs_req->req.complete) { - spin_unlock(&hs_ep->lock); + spin_unlock(&hsotg->lock); hs_req->req.complete(&hs_ep->ep, &hs_req->req); - spin_lock(&hs_ep->lock); + spin_lock(&hsotg->lock); } /* @@ -1404,28 +1413,6 @@ static void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg, } /** - * s3c_hsotg_complete_request_lock - complete a request given to us (locked) - * @hsotg: The device state. - * @hs_ep: The endpoint the request was on. - * @hs_req: The request to complete. - * @result: The result code (0 => Ok, otherwise errno) - * - * See s3c_hsotg_complete_request(), but called with the endpoint's - * lock held. - */ -static void s3c_hsotg_complete_request_lock(struct s3c_hsotg *hsotg, - struct s3c_hsotg_ep *hs_ep, - struct s3c_hsotg_req *hs_req, - int result) -{ - unsigned long flags; - - spin_lock_irqsave(&hs_ep->lock, flags); - s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); - spin_unlock_irqrestore(&hs_ep->lock, flags); -} - -/** * s3c_hsotg_rx_data - receive data from the FIFO for an endpoint * @hsotg: The device state. * @ep_idx: The endpoint index for the data @@ -1444,6 +1431,7 @@ static void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) int max_req; int read_ptr; + if (!hs_req) { u32 epctl = readl(hsotg->regs + DOEPCTL(ep_idx)); int ptr; @@ -1459,8 +1447,6 @@ static void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) return; } - spin_lock(&hs_ep->lock); - to_read = size; read_ptr = hs_req->req.actual; max_req = hs_req->req.length - read_ptr; @@ -1487,8 +1473,6 @@ static void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) * alignment of the data. */ readsl(fifo, hs_req->req.buf + read_ptr, to_read); - - spin_unlock(&hs_ep->lock); } /** @@ -1609,7 +1593,7 @@ static void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg, s3c_hsotg_send_zlp(hsotg, hs_req); } - s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, result); + s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); } /** @@ -1864,7 +1848,7 @@ static void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg, /* Finish ZLP handling for IN EP0 transactions */ if (hsotg->eps[0].sent_zlp) { dev_dbg(hsotg->dev, "zlp packet received\n"); - s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, 0); + s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); return; } @@ -1915,7 +1899,7 @@ static void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg, dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); } else - s3c_hsotg_complete_request_lock(hsotg, hs_ep, hs_req, 0); + s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); } /** @@ -2123,9 +2107,6 @@ static void kill_all_requests(struct s3c_hsotg *hsotg, int result, bool force) { struct s3c_hsotg_req *req, *treq; - unsigned long flags; - - spin_lock_irqsave(&ep->lock, flags); list_for_each_entry_safe(req, treq, &ep->queue, queue) { /* @@ -2139,14 +2120,15 @@ static void kill_all_requests(struct s3c_hsotg *hsotg, s3c_hsotg_complete_request(hsotg, ep, req, result); } - - spin_unlock_irqrestore(&ep->lock, flags); } #define call_gadget(_hs, _entry) \ if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \ - (_hs)->driver && (_hs)->driver->_entry) \ - (_hs)->driver->_entry(&(_hs)->gadget); + (_hs)->driver && (_hs)->driver->_entry) { \ + spin_unlock(&_hs->lock); \ + (_hs)->driver->_entry(&(_hs)->gadget); \ + spin_lock(&_hs->lock); \ + } /** * s3c_hsotg_disconnect - disconnect service @@ -2388,6 +2370,7 @@ static irqreturn_t s3c_hsotg_irq(int irq, void *pw) u32 gintsts; u32 gintmsk; + spin_lock(&hsotg->lock); irq_retry: gintsts = readl(hsotg->regs + GINTSTS); gintmsk = readl(hsotg->regs + GINTMSK); @@ -2557,6 +2540,8 @@ irq_retry: if (gintsts & IRQ_RETRY_MASK && --retry_count > 0) goto irq_retry; + spin_unlock(&hsotg->lock); + return IRQ_HANDLED; } @@ -2604,7 +2589,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n", __func__, epctrl, epctrl_reg); - spin_lock_irqsave(&hs_ep->lock, flags); + spin_lock_irqsave(&hsotg->lock, flags); epctrl &= ~(DxEPCTL_EPType_MASK | DxEPCTL_MPS_MASK); epctrl |= DxEPCTL_MPS(mps); @@ -2683,7 +2668,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); out: - spin_unlock_irqrestore(&hs_ep->lock, flags); + spin_unlock_irqrestore(&hsotg->lock, flags); return ret; } @@ -2710,10 +2695,10 @@ static int s3c_hsotg_ep_disable(struct usb_ep *ep) epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); + spin_lock_irqsave(&hsotg->lock, flags); /* terminate all requests with shutdown */ kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, false); - spin_lock_irqsave(&hs_ep->lock, flags); ctrl = readl(hsotg->regs + epctrl_reg); ctrl &= ~DxEPCTL_EPEna; @@ -2726,7 +2711,7 @@ static int s3c_hsotg_ep_disable(struct usb_ep *ep) /* disable endpoint interrupts */ s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0); - spin_unlock_irqrestore(&hs_ep->lock, flags); + spin_unlock_irqrestore(&hsotg->lock, flags); return 0; } @@ -2761,15 +2746,15 @@ static int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) dev_info(hs->dev, "ep_dequeue(%p,%p)\n", ep, req); - spin_lock_irqsave(&hs_ep->lock, flags); + spin_lock_irqsave(&hs->lock, flags); if (!on_list(hs_ep, hs_req)) { - spin_unlock_irqrestore(&hs_ep->lock, flags); + spin_unlock_irqrestore(&hs->lock, flags); return -EINVAL; } s3c_hsotg_complete_request(hs, hs_ep, hs_req, -ECONNRESET); - spin_unlock_irqrestore(&hs_ep->lock, flags); + spin_unlock_irqrestore(&hs->lock, flags); return 0; } @@ -2784,15 +2769,12 @@ static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) struct s3c_hsotg_ep *hs_ep = our_ep(ep); struct s3c_hsotg *hs = hs_ep->parent; int index = hs_ep->index; - unsigned long irqflags; u32 epreg; u32 epctl; u32 xfertype; dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value); - spin_lock_irqsave(&hs_ep->lock, irqflags); - /* write both IN and OUT control registers */ epreg = DIEPCTL(index); @@ -2827,19 +2809,36 @@ static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) writel(epctl, hs->regs + epreg); - spin_unlock_irqrestore(&hs_ep->lock, irqflags); - return 0; } +/** + * s3c_hsotg_ep_sethalt_lock - set halt on a given endpoint with lock held + * @ep: The endpoint to set halt. + * @value: Set or unset the halt. + */ +static int s3c_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value) +{ + struct s3c_hsotg_ep *hs_ep = our_ep(ep); + struct s3c_hsotg *hs = hs_ep->parent; + unsigned long flags = 0; + int ret = 0; + + spin_lock_irqsave(&hs->lock, flags); + ret = s3c_hsotg_ep_sethalt(ep, value); + spin_unlock_irqrestore(&hs->lock, flags); + + return ret; +} + static struct usb_ep_ops s3c_hsotg_ep_ops = { .enable = s3c_hsotg_ep_enable, .disable = s3c_hsotg_ep_disable, .alloc_request = s3c_hsotg_ep_alloc_request, .free_request = s3c_hsotg_ep_free_request, - .queue = s3c_hsotg_ep_queue, + .queue = s3c_hsotg_ep_queue_lock, .dequeue = s3c_hsotg_ep_dequeue, - .set_halt = s3c_hsotg_ep_sethalt, + .set_halt = s3c_hsotg_ep_sethalt_lock, /* note, don't believe we have any call for the fifo routines */ }; @@ -2954,6 +2953,7 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget, driver->driver.bus = NULL; hsotg->driver = driver; hsotg->gadget.dev.driver = &driver->driver; + hsotg->gadget.dev.of_node = hsotg->dev->of_node; hsotg->gadget.dev.dma_mask = hsotg->dev->dma_mask; hsotg->gadget.speed = USB_SPEED_UNKNOWN; @@ -2964,9 +2964,6 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget, goto err; } - s3c_hsotg_phy_enable(hsotg); - - s3c_hsotg_core_init(hsotg); hsotg->last_rst = jiffies; dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); return 0; @@ -2988,6 +2985,7 @@ static int s3c_hsotg_udc_stop(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { struct s3c_hsotg *hsotg = to_hsotg(gadget); + unsigned long flags = 0; int ep; if (!hsotg) @@ -3000,6 +2998,8 @@ static int s3c_hsotg_udc_stop(struct usb_gadget *gadget, for (ep = 0; ep < hsotg->num_of_eps; ep++) s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); + spin_lock_irqsave(&hsotg->lock, flags); + s3c_hsotg_phy_disable(hsotg); regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); @@ -3007,6 +3007,8 @@ static int s3c_hsotg_udc_stop(struct usb_gadget *gadget, hsotg->gadget.speed = USB_SPEED_UNKNOWN; hsotg->gadget.dev.driver = NULL; + spin_unlock_irqrestore(&hsotg->lock, flags); + dev_info(hsotg->dev, "unregistered gadget driver '%s'\n", driver->driver.name); @@ -3024,10 +3026,40 @@ static int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget) return s3c_hsotg_read_frameno(to_hsotg(gadget)); } +/** + * s3c_hsotg_pullup - connect/disconnect the USB PHY + * @gadget: The usb gadget state + * @is_on: Current state of the USB PHY + * + * Connect/Disconnect the USB PHY pullup + */ +static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) +{ + struct s3c_hsotg *hsotg = to_hsotg(gadget); + unsigned long flags = 0; + + dev_dbg(hsotg->dev, "%s: is_in: %d\n", __func__, is_on); + + spin_lock_irqsave(&hsotg->lock, flags); + if (is_on) { + s3c_hsotg_phy_enable(hsotg); + s3c_hsotg_core_init(hsotg); + } else { + s3c_hsotg_disconnect(hsotg); + s3c_hsotg_phy_disable(hsotg); + } + + hsotg->gadget.speed = USB_SPEED_UNKNOWN; + spin_unlock_irqrestore(&hsotg->lock, flags); + + return 0; +} + static struct usb_gadget_ops s3c_hsotg_gadget_ops = { .get_frame = s3c_hsotg_gadget_getframe, .udc_start = s3c_hsotg_udc_start, .udc_stop = s3c_hsotg_udc_stop, + .pullup = s3c_hsotg_pullup, }; /** @@ -3063,8 +3095,6 @@ static void __devinit s3c_hsotg_initep(struct s3c_hsotg *hsotg, INIT_LIST_HEAD(&hs_ep->queue); INIT_LIST_HEAD(&hs_ep->ep.ep_list); - spin_lock_init(&hs_ep->lock); - /* add to the list of endpoints known by the gadget driver */ if (epnum) list_add_tail(&hs_ep->ep.ep_list, &hsotg->gadget.ep_list); @@ -3342,7 +3372,7 @@ static int ep_show(struct seq_file *seq, void *v) seq_printf(seq, "request list (%p,%p):\n", ep->queue.next, ep->queue.prev); - spin_lock_irqsave(&ep->lock, flags); + spin_lock_irqsave(&hsotg->lock, flags); list_for_each_entry(req, &ep->queue, queue) { if (--show_limit < 0) { @@ -3357,7 +3387,7 @@ static int ep_show(struct seq_file *seq, void *v) req->req.actual, req->req.status); } - spin_unlock_irqrestore(&ep->lock, flags); + spin_unlock_irqrestore(&hsotg->lock, flags); return 0; } @@ -3477,7 +3507,7 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev) return -EINVAL; } - hsotg = kzalloc(sizeof(struct s3c_hsotg), GFP_KERNEL); + hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg), GFP_KERNEL); if (!hsotg) { dev_err(dev, "cannot get memory\n"); return -ENOMEM; @@ -3489,46 +3519,35 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev) hsotg->clk = clk_get(&pdev->dev, "otg"); if (IS_ERR(hsotg->clk)) { dev_err(dev, "cannot get otg clock\n"); - ret = PTR_ERR(hsotg->clk); - goto err_mem; + return PTR_ERR(hsotg->clk); } platform_set_drvdata(pdev, hsotg); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(dev, "cannot find register resource 0\n"); - ret = -EINVAL; - goto err_clk; - } - - hsotg->regs_res = request_mem_region(res->start, resource_size(res), - dev_name(dev)); - if (!hsotg->regs_res) { - dev_err(dev, "cannot reserve registers\n"); - ret = -ENOENT; - goto err_clk; - } - hsotg->regs = ioremap(res->start, resource_size(res)); + hsotg->regs = devm_request_and_ioremap(&pdev->dev, res); if (!hsotg->regs) { dev_err(dev, "cannot map registers\n"); ret = -ENXIO; - goto err_regs_res; + goto err_clk; } ret = platform_get_irq(pdev, 0); if (ret < 0) { dev_err(dev, "cannot find IRQ\n"); - goto err_regs; + goto err_clk; } + spin_lock_init(&hsotg->lock); + hsotg->irq = ret; - ret = request_irq(ret, s3c_hsotg_irq, 0, dev_name(dev), hsotg); + ret = devm_request_irq(&pdev->dev, hsotg->irq, s3c_hsotg_irq, 0, + dev_name(dev), hsotg); if (ret < 0) { dev_err(dev, "cannot claim IRQ\n"); - goto err_regs; + goto err_clk; } dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq); @@ -3558,7 +3577,7 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev) hsotg->supplies); if (ret) { dev_err(dev, "failed to request supplies: %d\n", ret); - goto err_irq; + goto err_clk; } ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), @@ -3642,19 +3661,11 @@ err_ep_mem: err_supplies: s3c_hsotg_phy_disable(hsotg); regulator_bulk_free(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); -err_irq: - free_irq(hsotg->irq, hsotg); -err_regs: - iounmap(hsotg->regs); - -err_regs_res: - release_resource(hsotg->regs_res); - kfree(hsotg->regs_res); + err_clk: clk_disable_unprepare(hsotg->clk); clk_put(hsotg->clk); -err_mem: - kfree(hsotg); + return ret; } @@ -3675,12 +3686,6 @@ static int __devexit s3c_hsotg_remove(struct platform_device *pdev) usb_gadget_unregister_driver(hsotg->driver); } - free_irq(hsotg->irq, hsotg); - iounmap(hsotg->regs); - - release_resource(hsotg->regs_res); - kfree(hsotg->regs_res); - s3c_hsotg_phy_disable(hsotg); regulator_bulk_free(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c index 236b271871a0..e26a4e7ed2bf 100644 --- a/drivers/usb/gadget/s3c-hsudc.c +++ b/drivers/usb/gadget/s3c-hsudc.c @@ -24,6 +24,7 @@ #include <linux/io.h> #include <linux/slab.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/otg.h> @@ -1165,7 +1166,7 @@ static int s3c_hsudc_start(struct usb_gadget *gadget, } /* connect to bus through transceiver */ - if (hsudc->transceiver) { + if (!IS_ERR_OR_NULL(hsudc->transceiver)) { ret = otg_set_peripheral(hsudc->transceiver->otg, &hsudc->gadget); if (ret) { @@ -1220,7 +1221,7 @@ static int s3c_hsudc_stop(struct usb_gadget *gadget, s3c_hsudc_stop_activity(hsudc); spin_unlock_irqrestore(&hsudc->lock, flags); - if (hsudc->transceiver) + if (!IS_ERR_OR_NULL(hsudc->transceiver)) (void) otg_set_peripheral(hsudc->transceiver->otg, NULL); disable_irq(hsudc->irq); @@ -1249,7 +1250,7 @@ static int s3c_hsudc_vbus_draw(struct usb_gadget *gadget, unsigned mA) if (!hsudc) return -ENODEV; - if (hsudc->transceiver) + if (!IS_ERR_OR_NULL(hsudc->transceiver)) return usb_phy_set_power(hsudc->transceiver, mA); return -EOPNOTSUPP; @@ -1282,7 +1283,7 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev) hsudc->dev = dev; hsudc->pd = pdev->dev.platform_data; - hsudc->transceiver = usb_get_transceiver(); + hsudc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); for (i = 0; i < ARRAY_SIZE(hsudc->supplies); i++) hsudc->supplies[i].supply = s3c_hsudc_supply_names[i]; @@ -1385,8 +1386,8 @@ err_irq: err_remap: release_mem_region(res->start, resource_size(res)); err_res: - if (hsudc->transceiver) - usb_put_transceiver(hsudc->transceiver); + if (!IS_ERR_OR_NULL(hsudc->transceiver)) + usb_put_phy(hsudc->transceiver); regulator_bulk_free(ARRAY_SIZE(hsudc->supplies), hsudc->supplies); err_supplies: diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c index 8081ca3a70a2..ae8b18869b8c 100644 --- a/drivers/usb/gadget/storage_common.c +++ b/drivers/usb/gadget/storage_common.c @@ -38,12 +38,6 @@ */ /* - * When FSG_BUFFHD_STATIC_BUFFER is defined when this file is included - * the fsg_buffhd structure's buf field will be an array of FSG_BUFLEN - * characters rather then a pointer to void. - */ - -/* * When USB_GADGET_DEBUG_FILES is defined the module param num_buffers * sets the number of pipeline buffers (length of the fsg_buffhd array). * The valid range of num_buffers is: num >= 2 && num <= 4. @@ -260,11 +254,7 @@ enum fsg_buffer_state { }; struct fsg_buffhd { -#ifdef FSG_BUFFHD_STATIC_BUFFER - char buf[FSG_BUFLEN]; -#else void *buf; -#endif enum fsg_buffer_state state; struct fsg_buffhd *next; @@ -627,6 +617,16 @@ static struct usb_gadget_strings fsg_stringtab = { * the caller must own fsg->filesem for writing. */ +static void fsg_lun_close(struct fsg_lun *curlun) +{ + if (curlun->filp) { + LDBG(curlun, "close backing file\n"); + fput(curlun->filp); + curlun->filp = NULL; + } +} + + static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) { int ro; @@ -636,6 +636,8 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) loff_t size; loff_t num_sectors; loff_t min_sectors; + unsigned int blkbits; + unsigned int blksize; /* R/W if we can, R/O if we must */ ro = curlun->initially_ro; @@ -680,17 +682,17 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) } if (curlun->cdrom) { - curlun->blksize = 2048; - curlun->blkbits = 11; + blksize = 2048; + blkbits = 11; } else if (inode->i_bdev) { - curlun->blksize = bdev_logical_block_size(inode->i_bdev); - curlun->blkbits = blksize_bits(curlun->blksize); + blksize = bdev_logical_block_size(inode->i_bdev); + blkbits = blksize_bits(blksize); } else { - curlun->blksize = 512; - curlun->blkbits = 9; + blksize = 512; + blkbits = 9; } - num_sectors = size >> curlun->blkbits; /* File size in logic-block-size blocks */ + num_sectors = size >> blkbits; /* File size in logic-block-size blocks */ min_sectors = 1; if (curlun->cdrom) { min_sectors = 300; /* Smallest track is 300 frames */ @@ -707,7 +709,12 @@ static int fsg_lun_open(struct fsg_lun *curlun, const char *filename) goto out; } + if (fsg_lun_is_open(curlun)) + fsg_lun_close(curlun); + get_file(filp); + curlun->blksize = blksize; + curlun->blkbits = blkbits; curlun->ro = ro; curlun->filp = filp; curlun->file_length = size; @@ -721,16 +728,6 @@ out: } -static void fsg_lun_close(struct fsg_lun *curlun) -{ - if (curlun->filp) { - LDBG(curlun, "close backing file\n"); - fput(curlun->filp); - curlun->filp = NULL; - } -} - - /*-------------------------------------------------------------------------*/ /* @@ -881,19 +878,17 @@ static ssize_t fsg_store_file(struct device *dev, struct device_attribute *attr, if (count > 0 && buf[count-1] == '\n') ((char *) buf)[count-1] = 0; /* Ugh! */ - /* Eject current medium */ - down_write(filesem); - if (fsg_lun_is_open(curlun)) { - fsg_lun_close(curlun); - curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT; - } - /* Load new medium */ + down_write(filesem); if (count > 0 && buf[0]) { + /* fsg_lun_open() will close existing file if any. */ rc = fsg_lun_open(curlun, buf); if (rc == 0) curlun->unit_attention_data = SS_NOT_READY_TO_READY_TRANSITION; + } else if (fsg_lun_is_open(curlun)) { + fsg_lun_close(curlun); + curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT; } up_write(filesem); return (rc < 0 ? rc : count); diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index b9e1925b2df0..90e82e288eb9 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -798,12 +798,6 @@ int gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN], SET_ETHTOOL_OPS(net, &ops); - /* two kinds of host-initiated state changes: - * - iff DATA transfer is active, carrier is "on" - * - tx queueing enabled if open *and* carrier is "on" - */ - netif_carrier_off(net); - dev->gadget = g; SET_NETDEV_DEV(net, &g->dev); SET_NETDEV_DEVTYPE(net, &gadget_type); @@ -817,6 +811,12 @@ int gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN], INFO(dev, "HOST MAC %pM\n", dev->host_mac); the_dev = dev; + + /* two kinds of host-initiated state changes: + * - iff DATA transfer is active, carrier is "on" + * - tx queueing enabled if open *and* carrier is "on" + */ + netif_carrier_off(net); } return status; diff --git a/drivers/usb/gadget/uvc.h b/drivers/usb/gadget/uvc.h index ca4e03a1c73a..93b0c1191115 100644 --- a/drivers/usb/gadget/uvc.h +++ b/drivers/usb/gadget/uvc.h @@ -153,9 +153,11 @@ struct uvc_device /* Descriptors */ struct { - const struct uvc_descriptor_header * const *control; + const struct uvc_descriptor_header * const *fs_control; + const struct uvc_descriptor_header * const *ss_control; const struct uvc_descriptor_header * const *fs_streaming; const struct uvc_descriptor_header * const *hs_streaming; + const struct uvc_descriptor_header * const *ss_streaming; } desc; unsigned int control_intf; diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c index 668fe128f2ef..120e134e805e 100644 --- a/drivers/usb/gadget/webcam.c +++ b/drivers/usb/gadget/webcam.c @@ -272,7 +272,15 @@ static const struct uvc_color_matching_descriptor uvc_color_matching = { .bMatrixCoefficients = 4, }; -static const struct uvc_descriptor_header * const uvc_control_cls[] = { +static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = { + (const struct uvc_descriptor_header *) &uvc_control_header, + (const struct uvc_descriptor_header *) &uvc_camera_terminal, + (const struct uvc_descriptor_header *) &uvc_processing, + (const struct uvc_descriptor_header *) &uvc_output_terminal, + NULL, +}; + +static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = { (const struct uvc_descriptor_header *) &uvc_control_header, (const struct uvc_descriptor_header *) &uvc_camera_terminal, (const struct uvc_descriptor_header *) &uvc_processing, @@ -304,6 +312,18 @@ static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { NULL, }; +static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = { + (const struct uvc_descriptor_header *) &uvc_input_header, + (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, + (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, + (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, + (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, + (const struct uvc_descriptor_header *) &uvc_color_matching, + NULL, +}; + /* -------------------------------------------------------------------------- * USB configuration */ @@ -311,8 +331,9 @@ static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { static int __init webcam_config_bind(struct usb_configuration *c) { - return uvc_bind_config(c, uvc_control_cls, uvc_fs_streaming_cls, - uvc_hs_streaming_cls); + return uvc_bind_config(c, uvc_fs_control_cls, uvc_ss_control_cls, + uvc_fs_streaming_cls, uvc_hs_streaming_cls, + uvc_ss_streaming_cls); } static struct usb_configuration webcam_config_driver = { @@ -373,7 +394,7 @@ static struct usb_composite_driver webcam_driver = { .name = "g_webcam", .dev = &webcam_device_descriptor, .strings = webcam_device_strings, - .max_speed = USB_SPEED_HIGH, + .max_speed = USB_SPEED_SUPER, .unbind = webcam_unbind, }; diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index dcfaaa91a3fb..075d2eca8108 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -652,7 +652,7 @@ config USB_HCD_BCMA select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD help - Enbale support for the EHCI and OCHI host controller on an bcma bus. + Enable support for the EHCI and OCHI host controller on an bcma bus. It converts the bcma driver into two platform device drivers for ehci and ohci. @@ -664,7 +664,7 @@ config USB_HCD_SSB select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD help - Enbale support for the EHCI and OCHI host controller on an bcma bus. + Enable support for the EHCI and OCHI host controller on an bcma bus. It converts the bcma driver into two platform device drivers for ehci and ohci. diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c index cf14c95a6700..a47e2cffaaf8 100644 --- a/drivers/usb/host/ehci-atmel.c +++ b/drivers/usb/host/ehci-atmel.c @@ -53,30 +53,15 @@ static void atmel_stop_ehci(struct platform_device *pdev) static int ehci_atmel_setup(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); - int retval = 0; + int retval; /* registers start at offset 0x0 */ ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - - retval = ehci_halt(ehci); - if (retval) - return retval; - /* data structure init */ - retval = ehci_init(hcd); + retval = ehci_setup(hcd); if (retval) return retval; - ehci->sbrn = 0x20; - - ehci_reset(ehci); ehci_port_power(ehci, 0); return retval; diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c index bf7441afed16..cba10d625a5d 100644 --- a/drivers/usb/host/ehci-au1xxx.c +++ b/drivers/usb/host/ehci-au1xxx.c @@ -20,10 +20,12 @@ extern int usb_disabled(void); static int au1xxx_ehci_setup(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); - int ret = ehci_init(hcd); + int ret; + + ehci->caps = hcd->regs; + ret = ehci_setup(hcd); ehci->need_io_watchdog = 0; - ehci_reset(ehci); return ret; } @@ -78,7 +80,6 @@ static const struct hc_driver ehci_au1xxx_hc_driver = { static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev) { struct usb_hcd *hcd; - struct ehci_hcd *ehci; struct resource *res; int ret; @@ -116,13 +117,6 @@ static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev) goto err3; } - ehci = hcd_to_ehci(hcd); - ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase)); - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = readl(&ehci->caps->hcs_params); - ret = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED); if (ret == 0) { @@ -158,28 +152,10 @@ static int ehci_hcd_au1xxx_drv_remove(struct platform_device *pdev) static int ehci_hcd_au1xxx_drv_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - unsigned long flags; - int rc = 0; - - if (time_before(jiffies, ehci->next_statechange)) - msleep(10); - - /* Root hub was already suspended. Disable irq emission and - * mark HW unaccessible. The PM and USB cores make sure that - * the root hub is either suspended or stopped. - */ - ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev)); - spin_lock_irqsave(&ehci->lock, flags); - ehci_writel(ehci, 0, &ehci->regs->intr_enable); - (void)ehci_readl(ehci, &ehci->regs->intr_enable); - - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - spin_unlock_irqrestore(&ehci->lock, flags); - - // could save FLADJ in case of Vaux power loss - // ... we'd only use it to handle clock skew + bool do_wakeup = device_may_wakeup(dev); + int rc; + rc = ehci_suspend(hcd, do_wakeup); alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); return rc; @@ -188,56 +164,9 @@ static int ehci_hcd_au1xxx_drv_suspend(struct device *dev) static int ehci_hcd_au1xxx_drv_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); alchemy_usb_control(ALCHEMY_USB_EHCI0, 1); - - // maybe restore FLADJ - - if (time_before(jiffies, ehci->next_statechange)) - msleep(100); - - /* Mark hardware accessible again as we are out of D3 state by now */ - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - - /* If CF is still set, we maintained PCI Vaux power. - * Just undo the effect of ehci_pci_suspend(). - */ - if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { - int mask = INTR_MASK; - - ehci_prepare_ports_for_controller_resume(ehci); - if (!hcd->self.root_hub->do_remote_wakeup) - mask &= ~STS_PCD; - ehci_writel(ehci, mask, &ehci->regs->intr_enable); - ehci_readl(ehci, &ehci->regs->intr_enable); - return 0; - } - - ehci_dbg(ehci, "lost power, restarting\n"); - usb_root_hub_lost_power(hcd->self.root_hub); - - /* Else reset, to cope with power loss or flush-to-storage - * style "resume" having let BIOS kick in during reboot. - */ - (void) ehci_halt(ehci); - (void) ehci_reset(ehci); - - /* emptying the schedule aborts any urbs */ - spin_lock_irq(&ehci->lock); - if (ehci->reclaim) - end_unlink_async(ehci); - ehci_work(ehci); - spin_unlock_irq(&ehci->lock); - - ehci_writel(ehci, ehci->command, &ehci->regs->command); - ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); - ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ - - /* here we "know" root ports should always stay powered */ - ehci_port_power(ehci, 1); - - ehci->rh_state = EHCI_RH_SUSPENDED; + ehci_resume(hcd, false); return 0; } diff --git a/drivers/usb/host/ehci-cns3xxx.c b/drivers/usb/host/ehci-cns3xxx.c index 6536abdea6e6..caaa3e5be334 100644 --- a/drivers/usb/host/ehci-cns3xxx.c +++ b/drivers/usb/host/ehci-cns3xxx.c @@ -33,14 +33,10 @@ static int cns3xxx_ehci_init(struct usb_hcd *hcd) } ehci->caps = hcd->regs; - ehci->regs = hcd->regs - + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); hcd->has_tt = 0; - ehci_reset(ehci); - retval = ehci_init(hcd); + retval = ehci_setup(hcd); if (retval) return retval; diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c index 7561966fbdc4..f0c00de035ef 100644 --- a/drivers/usb/host/ehci-dbg.c +++ b/drivers/usb/host/ehci-dbg.c @@ -404,9 +404,9 @@ struct debug_buffer { #define speed_char(info1) ({ char tmp; \ switch (info1 & (3 << 12)) { \ - case 0 << 12: tmp = 'f'; break; \ - case 1 << 12: tmp = 'l'; break; \ - case 2 << 12: tmp = 'h'; break; \ + case QH_FULL_SPEED: tmp = 'f'; break; \ + case QH_LOW_SPEED: tmp = 'l'; break; \ + case QH_HIGH_SPEED: tmp = 'h'; break; \ default: tmp = '?'; break; \ }; tmp; }) @@ -538,12 +538,13 @@ static ssize_t fill_async_buffer(struct debug_buffer *buf) spin_lock_irqsave (&ehci->lock, flags); for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh) qh_lines (ehci, qh, &next, &size); - if (ehci->reclaim && size > 0) { - temp = scnprintf (next, size, "\nreclaim =\n"); + if (ehci->async_unlink && size > 0) { + temp = scnprintf(next, size, "\nunlink =\n"); size -= temp; next += temp; - for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim) + for (qh = ehci->async_unlink; size > 0 && qh; + qh = qh->unlink_next) qh_lines (ehci, qh, &next, &size); } spin_unlock_irqrestore (&ehci->lock, flags); @@ -705,6 +706,8 @@ static const char *rh_state_string(struct ehci_hcd *ehci) return "suspended"; case EHCI_RH_RUNNING: return "running"; + case EHCI_RH_STOPPING: + return "stopping"; } return "?"; } @@ -841,16 +844,17 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf) } } - if (ehci->reclaim) { - temp = scnprintf(next, size, "reclaim qh %p\n", ehci->reclaim); + if (ehci->async_unlink) { + temp = scnprintf(next, size, "async unlink qh %p\n", + ehci->async_unlink); size -= temp; next += temp; } #ifdef EHCI_STATS temp = scnprintf (next, size, - "irq normal %ld err %ld reclaim %ld (lost %ld)\n", - ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim, + "irq normal %ld err %ld iaa %ld (lost %ld)\n", + ehci->stats.normal, ehci->stats.error, ehci->stats.iaa, ehci->stats.lost_iaa); size -= temp; next += temp; diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 43362577b54a..b7451b29c5ac 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -27,6 +27,7 @@ #include <linux/types.h> #include <linux/delay.h> #include <linux/pm.h> +#include <linux/err.h> #include <linux/platform_device.h> #include <linux/fsl_devices.h> @@ -142,19 +143,19 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver, if (pdata->operating_mode == FSL_USB2_DR_OTG) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); - ehci->transceiver = usb_get_transceiver(); - dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, transceiver=0x%p\n", - hcd, ehci, ehci->transceiver); + hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2); + dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, phy=0x%p\n", + hcd, ehci, hcd->phy); - if (ehci->transceiver) { - retval = otg_set_host(ehci->transceiver->otg, + if (!IS_ERR_OR_NULL(hcd->phy)) { + retval = otg_set_host(hcd->phy->otg, &ehci_to_hcd(ehci)->self); if (retval) { - usb_put_transceiver(ehci->transceiver); + usb_put_phy(hcd->phy); goto err4; } } else { - dev_err(&pdev->dev, "can't find transceiver\n"); + dev_err(&pdev->dev, "can't find phy\n"); retval = -ENODEV; goto err4; } @@ -190,11 +191,10 @@ static void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - if (ehci->transceiver) { - otg_set_host(ehci->transceiver->otg, NULL); - usb_put_transceiver(ehci->transceiver); + if (!IS_ERR_OR_NULL(hcd->phy)) { + otg_set_host(hcd->phy->otg, NULL); + usb_put_phy(hcd->phy); } usb_remove_hcd(hcd); @@ -313,7 +313,7 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) } if (pdata->have_sysif_regs) { -#ifdef CONFIG_PPC_85xx +#ifdef CONFIG_FSL_SOC_BOOKE out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008); out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080); #else @@ -348,29 +348,13 @@ static int ehci_fsl_setup(struct usb_hcd *hcd) /* EHCI registers start at offset 0x100 */ ehci->caps = hcd->regs + 0x100; - ehci->regs = hcd->regs + 0x100 + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); hcd->has_tt = 1; - retval = ehci_halt(ehci); - if (retval) - return retval; - - /* data structure init */ - retval = ehci_init(hcd); + retval = ehci_setup(hcd); if (retval) return retval; - ehci->sbrn = 0x20; - - ehci_reset(ehci); - if (of_device_is_compatible(dev->parent->of_node, "fsl,mpc5121-usb2-dr")) { /* diff --git a/drivers/usb/host/ehci-grlib.c b/drivers/usb/host/ehci-grlib.c index fdfd8c5b639b..22ca45c079a4 100644 --- a/drivers/usb/host/ehci-grlib.c +++ b/drivers/usb/host/ehci-grlib.c @@ -40,18 +40,13 @@ static int ehci_grlib_setup(struct usb_hcd *hcd) struct ehci_hcd *ehci = hcd_to_ehci(hcd); int retval; - retval = ehci_halt(ehci); + retval = ehci_setup(hcd); if (retval) return retval; - retval = ehci_init(hcd); - if (retval) - return retval; - - ehci->sbrn = 0x20; ehci_port_power(ehci, 1); - return ehci_reset(ehci); + return retval; } @@ -164,12 +159,6 @@ static int __devinit ehci_hcd_grlib_probe(struct platform_device *op) ehci->big_endian_capbase = 1; } - ehci->regs = hcd->regs + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - rv = usb_add_hcd(hcd, irq, 0); if (rv) goto err_ehci; diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 1d9401e0990a..b05c6865b610 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -30,8 +30,7 @@ #include <linux/vmalloc.h> #include <linux/errno.h> #include <linux/init.h> -#include <linux/timer.h> -#include <linux/ktime.h> +#include <linux/hrtimer.h> #include <linux/list.h> #include <linux/interrupt.h> #include <linux/usb.h> @@ -94,12 +93,6 @@ static const char hcd_name [] = "ehci_hcd"; */ #define EHCI_TUNE_FLS 1 /* (medium) 512-frame schedule */ -#define EHCI_IAA_MSECS 10 /* arbitrary */ -#define EHCI_IO_JIFFIES (HZ/10) /* io watchdog > irq_thresh */ -#define EHCI_ASYNC_JIFFIES (HZ/20) /* async idle timeout */ -#define EHCI_SHRINK_JIFFIES (DIV_ROUND_UP(HZ, 200) + 1) - /* 5-ms async qh unlink delay */ - /* Initial IRQ latency: faster than hw default */ static int log2_irq_thresh = 0; // 0 to 6 module_param (log2_irq_thresh, int, S_IRUGO); @@ -130,41 +123,6 @@ MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us"); /*-------------------------------------------------------------------------*/ -static void -timer_action(struct ehci_hcd *ehci, enum ehci_timer_action action) -{ - /* Don't override timeouts which shrink or (later) disable - * the async ring; just the I/O watchdog. Note that if a - * SHRINK were pending, OFF would never be requested. - */ - if (timer_pending(&ehci->watchdog) - && ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF)) - & ehci->actions)) - return; - - if (!test_and_set_bit(action, &ehci->actions)) { - unsigned long t; - - switch (action) { - case TIMER_IO_WATCHDOG: - if (!ehci->need_io_watchdog) - return; - t = EHCI_IO_JIFFIES; - break; - case TIMER_ASYNC_OFF: - t = EHCI_ASYNC_JIFFIES; - break; - /* case TIMER_ASYNC_SHRINK: */ - default: - t = EHCI_SHRINK_JIFFIES; - break; - } - mod_timer(&ehci->watchdog, t + jiffies); - } -} - -/*-------------------------------------------------------------------------*/ - /* * handshake - spin reading hc until handshake completes or fails * @ptr: address of hc register to be read @@ -203,29 +161,30 @@ static int handshake (struct ehci_hcd *ehci, void __iomem *ptr, /* check TDI/ARC silicon is in host mode */ static int tdi_in_host_mode (struct ehci_hcd *ehci) { - u32 __iomem *reg_ptr; u32 tmp; - reg_ptr = (u32 __iomem *)(((u8 __iomem *)ehci->regs) + USBMODE); - tmp = ehci_readl(ehci, reg_ptr); + tmp = ehci_readl(ehci, &ehci->regs->usbmode); return (tmp & 3) == USBMODE_CM_HC; } -/* force HC to halt state from unknown (EHCI spec section 2.3) */ +/* + * Force HC to halt state from unknown (EHCI spec section 2.3). + * Must be called with interrupts enabled and the lock not held. + */ static int ehci_halt (struct ehci_hcd *ehci) { - u32 temp = ehci_readl(ehci, &ehci->regs->status); + u32 temp; + + spin_lock_irq(&ehci->lock); /* disable any irqs left enabled by previous code */ ehci_writel(ehci, 0, &ehci->regs->intr_enable); - if (ehci_is_TDI(ehci) && tdi_in_host_mode(ehci) == 0) { + if (ehci_is_TDI(ehci) && !tdi_in_host_mode(ehci)) { + spin_unlock_irq(&ehci->lock); return 0; } - if ((temp & STS_HALT) != 0) - return 0; - /* * This routine gets called during probe before ehci->command * has been initialized, so we can't rely on its value. @@ -234,80 +193,20 @@ static int ehci_halt (struct ehci_hcd *ehci) temp = ehci_readl(ehci, &ehci->regs->command); temp &= ~(CMD_RUN | CMD_IAAD); ehci_writel(ehci, temp, &ehci->regs->command); - return handshake (ehci, &ehci->regs->status, - STS_HALT, STS_HALT, 16 * 125); -} - -#if defined(CONFIG_USB_SUSPEND) && defined(CONFIG_PPC_PS3) - -/* - * The EHCI controller of the Cell Super Companion Chip used in the - * PS3 will stop the root hub after all root hub ports are suspended. - * When in this condition handshake will return -ETIMEDOUT. The - * STS_HLT bit will not be set, so inspection of the frame index is - * used here to test for the condition. If the condition is found - * return success to allow the USB suspend to complete. - */ - -static int handshake_for_broken_root_hub(struct ehci_hcd *ehci, - void __iomem *ptr, u32 mask, u32 done, - int usec) -{ - unsigned int old_index; - int error; - - if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) - return -ETIMEDOUT; - - old_index = ehci_read_frame_index(ehci); - - error = handshake(ehci, ptr, mask, done, usec); - - if (error == -ETIMEDOUT && ehci_read_frame_index(ehci) == old_index) - return 0; - - return error; -} - -#else - -static int handshake_for_broken_root_hub(struct ehci_hcd *ehci, - void __iomem *ptr, u32 mask, u32 done, - int usec) -{ - return -ETIMEDOUT; -} - -#endif -static int handshake_on_error_set_halt(struct ehci_hcd *ehci, void __iomem *ptr, - u32 mask, u32 done, int usec) -{ - int error; - - error = handshake(ehci, ptr, mask, done, usec); - if (error == -ETIMEDOUT) - error = handshake_for_broken_root_hub(ehci, ptr, mask, done, - usec); - - if (error) { - ehci_halt(ehci); - ehci->rh_state = EHCI_RH_HALTED; - ehci_err(ehci, "force halt; handshake %p %08x %08x -> %d\n", - ptr, mask, done, error); - } + spin_unlock_irq(&ehci->lock); + synchronize_irq(ehci_to_hcd(ehci)->irq); - return error; + return handshake(ehci, &ehci->regs->status, + STS_HALT, STS_HALT, 16 * 125); } /* put TDI/ARC silicon into EHCI mode */ static void tdi_reset (struct ehci_hcd *ehci) { - u32 __iomem *reg_ptr; u32 tmp; - reg_ptr = (u32 __iomem *)(((u8 __iomem *)ehci->regs) + USBMODE); - tmp = ehci_readl(ehci, reg_ptr); + tmp = ehci_readl(ehci, &ehci->regs->usbmode); tmp |= USBMODE_CM_HC; /* The default byte access to MMR space is LE after * controller reset. Set the required endian mode @@ -315,10 +214,13 @@ static void tdi_reset (struct ehci_hcd *ehci) */ if (ehci_big_endian_mmio(ehci)) tmp |= USBMODE_BE; - ehci_writel(ehci, tmp, reg_ptr); + ehci_writel(ehci, tmp, &ehci->regs->usbmode); } -/* reset a non-running (STS_HALT == 1) controller */ +/* + * Reset a non-running (STS_HALT == 1) controller. + * Must be called with interrupts enabled and the lock not held. + */ static int ehci_reset (struct ehci_hcd *ehci) { int retval; @@ -339,9 +241,8 @@ static int ehci_reset (struct ehci_hcd *ehci) if (ehci->has_hostpc) { ehci_writel(ehci, USBMODE_EX_HC | USBMODE_EX_VBPS, - (u32 __iomem *)(((u8 *)ehci->regs) + USBMODE_EX)); - ehci_writel(ehci, TXFIFO_DEFAULT, - (u32 __iomem *)(((u8 *)ehci->regs) + TXFILLTUNING)); + &ehci->regs->usbmode_ex); + ehci_writel(ehci, TXFIFO_DEFAULT, &ehci->regs->txfill_tuning); } if (retval) return retval; @@ -357,36 +258,40 @@ static int ehci_reset (struct ehci_hcd *ehci) return retval; } -/* idle the controller (from running) */ +/* + * Idle the controller (turn off the schedules). + * Must be called with interrupts enabled and the lock not held. + */ static void ehci_quiesce (struct ehci_hcd *ehci) { u32 temp; -#ifdef DEBUG if (ehci->rh_state != EHCI_RH_RUNNING) - BUG (); -#endif + return; /* wait for any schedule enables/disables to take effect */ temp = (ehci->command << 10) & (STS_ASS | STS_PSS); - if (handshake_on_error_set_halt(ehci, &ehci->regs->status, - STS_ASS | STS_PSS, temp, 16 * 125)) - return; + handshake(ehci, &ehci->regs->status, STS_ASS | STS_PSS, temp, 16 * 125); /* then disable anything that's still active */ + spin_lock_irq(&ehci->lock); ehci->command &= ~(CMD_ASE | CMD_PSE); ehci_writel(ehci, ehci->command, &ehci->regs->command); + spin_unlock_irq(&ehci->lock); /* hardware can take 16 microframes to turn off ... */ - handshake_on_error_set_halt(ehci, &ehci->regs->status, - STS_ASS | STS_PSS, 0, 16 * 125); + handshake(ehci, &ehci->regs->status, STS_ASS | STS_PSS, 0, 16 * 125); } /*-------------------------------------------------------------------------*/ static void end_unlink_async(struct ehci_hcd *ehci); +static void unlink_empty_async(struct ehci_hcd *ehci); static void ehci_work(struct ehci_hcd *ehci); +static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh); +static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh); +#include "ehci-timer.c" #include "ehci-hub.c" #include "ehci-lpm.c" #include "ehci-mem.c" @@ -396,68 +301,6 @@ static void ehci_work(struct ehci_hcd *ehci); /*-------------------------------------------------------------------------*/ -static void ehci_iaa_watchdog(unsigned long param) -{ - struct ehci_hcd *ehci = (struct ehci_hcd *) param; - unsigned long flags; - - spin_lock_irqsave (&ehci->lock, flags); - - /* Lost IAA irqs wedge things badly; seen first with a vt8235. - * So we need this watchdog, but must protect it against both - * (a) SMP races against real IAA firing and retriggering, and - * (b) clean HC shutdown, when IAA watchdog was pending. - */ - if (ehci->reclaim - && !timer_pending(&ehci->iaa_watchdog) - && ehci->rh_state == EHCI_RH_RUNNING) { - u32 cmd, status; - - /* If we get here, IAA is *REALLY* late. It's barely - * conceivable that the system is so busy that CMD_IAAD - * is still legitimately set, so let's be sure it's - * clear before we read STS_IAA. (The HC should clear - * CMD_IAAD when it sets STS_IAA.) - */ - cmd = ehci_readl(ehci, &ehci->regs->command); - - /* If IAA is set here it either legitimately triggered - * before we cleared IAAD above (but _way_ late, so we'll - * still count it as lost) ... or a silicon erratum: - * - VIA seems to set IAA without triggering the IRQ; - * - IAAD potentially cleared without setting IAA. - */ - status = ehci_readl(ehci, &ehci->regs->status); - if ((status & STS_IAA) || !(cmd & CMD_IAAD)) { - COUNT (ehci->stats.lost_iaa); - ehci_writel(ehci, STS_IAA, &ehci->regs->status); - } - - ehci_vdbg(ehci, "IAA watchdog: status %x cmd %x\n", - status, cmd); - end_unlink_async(ehci); - } - - spin_unlock_irqrestore(&ehci->lock, flags); -} - -static void ehci_watchdog(unsigned long param) -{ - struct ehci_hcd *ehci = (struct ehci_hcd *) param; - unsigned long flags; - - spin_lock_irqsave(&ehci->lock, flags); - - /* stop async processing after it's idled a bit */ - if (test_bit (TIMER_ASYNC_OFF, &ehci->actions)) - start_unlink_async (ehci, ehci->async); - - /* ehci could run by timer, without IRQs ... */ - ehci_work (ehci); - - spin_unlock_irqrestore (&ehci->lock, flags); -} - /* On some systems, leaving remote wakeup enabled prevents system shutdown. * The firmware seems to think that powering off is a wakeup event! * This routine turns off remote wakeup and everything else, on all ports. @@ -473,11 +316,14 @@ static void ehci_turn_off_all_ports(struct ehci_hcd *ehci) /* * Halt HC, turn off all ports, and let the BIOS use the companion controllers. - * Should be called with ehci->lock held. + * Must be called with interrupts enabled and the lock not held. */ static void ehci_silence_controller(struct ehci_hcd *ehci) { ehci_halt(ehci); + + spin_lock_irq(&ehci->lock); + ehci->rh_state = EHCI_RH_HALTED; ehci_turn_off_all_ports(ehci); /* make BIOS/etc use companion controller during reboot */ @@ -485,6 +331,7 @@ static void ehci_silence_controller(struct ehci_hcd *ehci) /* unblock posted writes */ ehci_readl(ehci, &ehci->regs->configured_flag); + spin_unlock_irq(&ehci->lock); } /* ehci_shutdown kick in for silicon on any bus (not just pci, etc). @@ -495,12 +342,15 @@ static void ehci_shutdown(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); - del_timer_sync(&ehci->watchdog); - del_timer_sync(&ehci->iaa_watchdog); - spin_lock_irq(&ehci->lock); - ehci_silence_controller(ehci); + ehci->shutdown = true; + ehci->rh_state = EHCI_RH_STOPPING; + ehci->enabled_hrtimer_events = 0; spin_unlock_irq(&ehci->lock); + + ehci_silence_controller(ehci); + + hrtimer_cancel(&ehci->hrtimer); } static void ehci_port_power (struct ehci_hcd *ehci, int is_on) @@ -529,28 +379,33 @@ static void ehci_port_power (struct ehci_hcd *ehci, int is_on) */ static void ehci_work (struct ehci_hcd *ehci) { - timer_action_done (ehci, TIMER_IO_WATCHDOG); - /* another CPU may drop ehci->lock during a schedule scan while * it reports urb completions. this flag guards against bogus * attempts at re-entrant schedule scanning. */ - if (ehci->scanning) + if (ehci->scanning) { + ehci->need_rescan = true; return; - ehci->scanning = 1; - scan_async (ehci); - if (ehci->next_uframe != -1) - scan_periodic (ehci); - ehci->scanning = 0; + } + ehci->scanning = true; + + rescan: + ehci->need_rescan = false; + if (ehci->async_count) + scan_async(ehci); + if (ehci->intr_count > 0) + scan_intr(ehci); + if (ehci->isoc_count > 0) + scan_isoc(ehci); + if (ehci->need_rescan) + goto rescan; + ehci->scanning = false; /* the IO watchdog guards against hardware or driver bugs that * misplace IRQs, and should let us run completely without IRQs. * such lossage has been observed on both VT6202 and VT8235. */ - if (ehci->rh_state == EHCI_RH_RUNNING && - (ehci->async->qh_next.ptr != NULL || - ehci->periodic_sched != 0)) - timer_action (ehci, TIMER_IO_WATCHDOG); + turn_on_io_watchdog(ehci); } /* @@ -563,24 +418,22 @@ static void ehci_stop (struct usb_hcd *hcd) ehci_dbg (ehci, "stop\n"); /* no more interrupts ... */ - del_timer_sync (&ehci->watchdog); - del_timer_sync(&ehci->iaa_watchdog); spin_lock_irq(&ehci->lock); - if (ehci->rh_state == EHCI_RH_RUNNING) - ehci_quiesce (ehci); + ehci->enabled_hrtimer_events = 0; + spin_unlock_irq(&ehci->lock); + ehci_quiesce(ehci); ehci_silence_controller(ehci); ehci_reset (ehci); - spin_unlock_irq(&ehci->lock); + hrtimer_cancel(&ehci->hrtimer); remove_sysfs_files(ehci); remove_debug_files (ehci); /* root hub is shut down separately (first, when possible) */ spin_lock_irq (&ehci->lock); - if (ehci->async) - ehci_work (ehci); + end_free_itds(ehci); spin_unlock_irq (&ehci->lock); ehci_mem_cleanup (ehci); @@ -588,8 +441,8 @@ static void ehci_stop (struct usb_hcd *hcd) usb_amd_dev_put(); #ifdef EHCI_STATS - ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n", - ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim, + ehci_dbg(ehci, "irq normal %ld err %ld iaa %ld (lost %ld)\n", + ehci->stats.normal, ehci->stats.error, ehci->stats.iaa, ehci->stats.lost_iaa); ehci_dbg (ehci, "complete %ld unlink %ld\n", ehci->stats.complete, ehci->stats.unlink); @@ -614,13 +467,10 @@ static int ehci_init(struct usb_hcd *hcd) * keep io watchdog by default, those good HCDs could turn off it later */ ehci->need_io_watchdog = 1; - init_timer(&ehci->watchdog); - ehci->watchdog.function = ehci_watchdog; - ehci->watchdog.data = (unsigned long) ehci; - init_timer(&ehci->iaa_watchdog); - ehci->iaa_watchdog.function = ehci_iaa_watchdog; - ehci->iaa_watchdog.data = (unsigned long) ehci; + hrtimer_init(&ehci->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + ehci->hrtimer.function = ehci_hrtimer_func; + ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT; hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params); @@ -635,6 +485,7 @@ static int ehci_init(struct usb_hcd *hcd) * periodic_size can shrink by USBCMD update if hcc_params allows. */ ehci->periodic_size = DEFAULT_I_TDPS; + INIT_LIST_HEAD(&ehci->intr_qh_list); INIT_LIST_HEAD(&ehci->cached_itd_list); INIT_LIST_HEAD(&ehci->cached_sitd_list); @@ -656,10 +507,6 @@ static int ehci_init(struct usb_hcd *hcd) else // N microframes cached ehci->i_thresh = 2 + HCC_ISOC_THRES(hcc_params); - ehci->reclaim = NULL; - ehci->next_uframe = -1; - ehci->clock_frame = -1; - /* * dedicate a qh for the async ring head, since we couldn't unlink * a 'real' qh without stopping the async schedule [4.8]. use it @@ -672,7 +519,7 @@ static int ehci_init(struct usb_hcd *hcd) hw->hw_next = QH_NEXT(ehci, ehci->async->qh_dma); hw->hw_info1 = cpu_to_hc32(ehci, QH_HEAD); #if defined(CONFIG_PPC_PS3) - hw->hw_info1 |= cpu_to_hc32(ehci, (1 << 7)); /* I = 1 */ + hw->hw_info1 |= cpu_to_hc32(ehci, QH_INACTIVATE); #endif hw->hw_token = cpu_to_hc32(ehci, QTD_STS_HALT); hw->hw_qtd_next = EHCI_LIST_END(ehci); @@ -813,7 +660,7 @@ static int ehci_run (struct usb_hcd *hcd) return 0; } -static int __maybe_unused ehci_setup (struct usb_hcd *hcd) +static int ehci_setup(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); int retval; @@ -828,15 +675,18 @@ static int __maybe_unused ehci_setup (struct usb_hcd *hcd) ehci->sbrn = HCD_USB2; - retval = ehci_halt(ehci); + /* data structure init */ + retval = ehci_init(hcd); if (retval) return retval; - /* data structure init */ - retval = ehci_init(hcd); + retval = ehci_halt(ehci); if (retval) return retval; + if (ehci_is_TDI(ehci)) + tdi_reset(ehci); + ehci_reset(ehci); return 0; @@ -895,14 +745,28 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd) /* complete the unlinking of some qh [4.15.2.3] */ if (status & STS_IAA) { + + /* Turn off the IAA watchdog */ + ehci->enabled_hrtimer_events &= ~BIT(EHCI_HRTIMER_IAA_WATCHDOG); + + /* + * Mild optimization: Allow another IAAD to reset the + * hrtimer, if one occurs before the next expiration. + * In theory we could always cancel the hrtimer, but + * tests show that about half the time it will be reset + * for some other event anyway. + */ + if (ehci->next_hrtimer_event == EHCI_HRTIMER_IAA_WATCHDOG) + ++ehci->next_hrtimer_event; + /* guard against (alleged) silicon errata */ if (cmd & CMD_IAAD) ehci_dbg(ehci, "IAA with IAAD still set?\n"); - if (ehci->reclaim) { - COUNT(ehci->stats.reclaim); + if (ehci->async_iaa) { + COUNT(ehci->stats.iaa); end_unlink_async(ehci); } else - ehci_dbg(ehci, "IAA with nothing to reclaim?\n"); + ehci_dbg(ehci, "IAA with nothing unlinked?\n"); } /* remote wakeup [4.3.1] */ @@ -956,15 +820,19 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd) ehci_err(ehci, "fatal error\n"); dbg_cmd(ehci, "fatal", cmd); dbg_status(ehci, "fatal", status); - ehci_halt(ehci); dead: - ehci_reset(ehci); - ehci_writel(ehci, 0, &ehci->regs->configured_flag); usb_hc_died(hcd); - /* generic layer kills/unlinks all urbs, then - * uses ehci_stop to clean up the rest - */ - bh = 1; + + /* Don't let the controller do anything more */ + ehci->shutdown = true; + ehci->rh_state = EHCI_RH_STOPPING; + ehci->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE); + ehci_writel(ehci, ehci->command, &ehci->regs->command); + ehci_writel(ehci, 0, &ehci->regs->intr_enable); + ehci_handle_controller_death(ehci); + + /* Handle completions when the controller stops */ + bh = 0; } if (bh) @@ -1026,38 +894,6 @@ static int ehci_urb_enqueue ( } } -static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh) -{ - /* failfast */ - if (ehci->rh_state != EHCI_RH_RUNNING && ehci->reclaim) - end_unlink_async(ehci); - - /* If the QH isn't linked then there's nothing we can do - * unless we were called during a giveback, in which case - * qh_completions() has to deal with it. - */ - if (qh->qh_state != QH_STATE_LINKED) { - if (qh->qh_state == QH_STATE_COMPLETING) - qh->needs_rescan = 1; - return; - } - - /* defer till later if busy */ - if (ehci->reclaim) { - struct ehci_qh *last; - - for (last = ehci->reclaim; - last->reclaim; - last = last->reclaim) - continue; - qh->qh_state = QH_STATE_UNLINK_WAIT; - last->reclaim = qh; - - /* start IAA cycle */ - } else - start_unlink_async (ehci, qh); -} - /* remove from hardware lists * completions normally happen asynchronously */ @@ -1084,7 +920,7 @@ static int ehci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) switch (qh->qh_state) { case QH_STATE_LINKED: case QH_STATE_COMPLETING: - unlink_async(ehci, qh); + start_unlink_async(ehci, qh); break; case QH_STATE_UNLINK: case QH_STATE_UNLINK_WAIT: @@ -1104,7 +940,7 @@ static int ehci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) switch (qh->qh_state) { case QH_STATE_LINKED: case QH_STATE_COMPLETING: - intr_deschedule (ehci, qh); + start_unlink_intr(ehci, qh); break; case QH_STATE_IDLE: qh_completions (ehci, qh); @@ -1152,11 +988,17 @@ rescan: * accelerate iso completions ... so spin a while. */ if (qh->hw == NULL) { - ehci_vdbg (ehci, "iso delay\n"); - goto idle_timeout; + struct ehci_iso_stream *stream = ep->hcpriv; + + if (!list_empty(&stream->td_list)) + goto idle_timeout; + + /* BUG_ON(!list_empty(&stream->free_list)); */ + kfree(stream); + goto done; } - if (ehci->rh_state != EHCI_RH_RUNNING) + if (ehci->rh_state < EHCI_RH_RUNNING) qh->qh_state = QH_STATE_IDLE; switch (qh->qh_state) { case QH_STATE_LINKED: @@ -1169,7 +1011,7 @@ rescan: * may already be unlinked. */ if (tmp) - unlink_async(ehci, qh); + start_unlink_async(ehci, qh); /* FALL THROUGH */ case QH_STATE_UNLINK: /* wait for hw to finish? */ case QH_STATE_UNLINK_WAIT: @@ -1181,7 +1023,7 @@ idle_timeout: if (qh->clearing_tt) goto idle_timeout; if (list_empty (&qh->qtd_list)) { - qh_put (qh); + qh_destroy(ehci, qh); break; } /* else FALL THROUGH */ @@ -1194,8 +1036,8 @@ idle_timeout: list_empty (&qh->qtd_list) ? "" : "(has tds)"); break; } + done: ep->hcpriv = NULL; -done: spin_unlock_irqrestore (&ehci->lock, flags); } @@ -1232,9 +1074,9 @@ ehci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep) * re-linking will call qh_refresh(). */ if (eptype == USB_ENDPOINT_XFER_BULK) - unlink_async(ehci, qh); + start_unlink_async(ehci, qh); else - intr_deschedule(ehci, qh); + start_unlink_intr(ehci, qh); } } spin_unlock_irqrestore(&ehci->lock, flags); @@ -1247,6 +1089,104 @@ static int ehci_get_frame (struct usb_hcd *hcd) } /*-------------------------------------------------------------------------*/ + +#ifdef CONFIG_PM + +/* suspend/resume, section 4.3 */ + +/* These routines handle the generic parts of controller suspend/resume */ + +static int __maybe_unused ehci_suspend(struct usb_hcd *hcd, bool do_wakeup) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + + if (time_before(jiffies, ehci->next_statechange)) + msleep(10); + + /* + * Root hub was already suspended. Disable IRQ emission and + * mark HW unaccessible. The PM and USB cores make sure that + * the root hub is either suspended or stopped. + */ + ehci_prepare_ports_for_controller_suspend(ehci, do_wakeup); + + spin_lock_irq(&ehci->lock); + ehci_writel(ehci, 0, &ehci->regs->intr_enable); + (void) ehci_readl(ehci, &ehci->regs->intr_enable); + + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + spin_unlock_irq(&ehci->lock); + + return 0; +} + +/* Returns 0 if power was preserved, 1 if power was lost */ +static int __maybe_unused ehci_resume(struct usb_hcd *hcd, bool hibernated) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + + if (time_before(jiffies, ehci->next_statechange)) + msleep(100); + + /* Mark hardware accessible again as we are back to full power by now */ + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + if (ehci->shutdown) + return 0; /* Controller is dead */ + + /* + * If CF is still set and we aren't resuming from hibernation + * then we maintained suspend power. + * Just undo the effect of ehci_suspend(). + */ + if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF && + !hibernated) { + int mask = INTR_MASK; + + ehci_prepare_ports_for_controller_resume(ehci); + + spin_lock_irq(&ehci->lock); + if (ehci->shutdown) + goto skip; + + if (!hcd->self.root_hub->do_remote_wakeup) + mask &= ~STS_PCD; + ehci_writel(ehci, mask, &ehci->regs->intr_enable); + ehci_readl(ehci, &ehci->regs->intr_enable); + skip: + spin_unlock_irq(&ehci->lock); + return 0; + } + + /* + * Else reset, to cope with power loss or resume from hibernation + * having let the firmware kick in during reboot. + */ + usb_root_hub_lost_power(hcd->self.root_hub); + (void) ehci_halt(ehci); + (void) ehci_reset(ehci); + + spin_lock_irq(&ehci->lock); + if (ehci->shutdown) + goto skip; + + ehci_writel(ehci, ehci->command, &ehci->regs->command); + ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); + ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ + + ehci->rh_state = EHCI_RH_SUSPENDED; + spin_unlock_irq(&ehci->lock); + + /* here we "know" root ports should always stay powered */ + ehci_port_power(ehci, 1); + + return 1; +} + +#endif + +/*-------------------------------------------------------------------------*/ + /* * The EHCI in ChipIdea HDRC cannot be a separate module or device, * because its registers (and irq) are shared between host/gadget/otg diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index fc9e7cc6ac9b..c7880223738a 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -59,6 +59,7 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci) /* Give the connections some time to appear */ msleep(20); + spin_lock_irq(&ehci->lock); port = HCS_N_PORTS(ehci->hcs_params); while (port--) { if (test_bit(port, &ehci->owned_ports)) { @@ -70,23 +71,30 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci) clear_bit(port, &ehci->owned_ports); else if (test_bit(port, &ehci->companion_ports)) ehci_writel(ehci, status & ~PORT_PE, reg); - else + else { + spin_unlock_irq(&ehci->lock); ehci_hub_control(hcd, SetPortFeature, USB_PORT_FEAT_RESET, port + 1, NULL, 0); + spin_lock_irq(&ehci->lock); + } } } + spin_unlock_irq(&ehci->lock); if (!ehci->owned_ports) return; msleep(90); /* Wait for resets to complete */ + spin_lock_irq(&ehci->lock); port = HCS_N_PORTS(ehci->hcs_params); while (port--) { if (test_bit(port, &ehci->owned_ports)) { + spin_unlock_irq(&ehci->lock); ehci_hub_control(hcd, GetPortStatus, 0, port + 1, (char *) &buf, sizeof(buf)); + spin_lock_irq(&ehci->lock); /* The companion should now own the port, * but if something went wrong the port must not @@ -105,9 +113,10 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci) } ehci->owned_ports = 0; + spin_unlock_irq(&ehci->lock); } -static int __maybe_unused ehci_port_change(struct ehci_hcd *ehci) +static int ehci_port_change(struct ehci_hcd *ehci) { int i = HCS_N_PORTS(ehci->hcs_params); @@ -128,12 +137,11 @@ static int __maybe_unused ehci_port_change(struct ehci_hcd *ehci) return 0; } -static __maybe_unused void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, +static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, bool suspending, bool do_wakeup) { int port; u32 temp; - unsigned long flags; /* If remote wakeup is enabled for the root hub but disabled * for the controller, we must adjust all the port wakeup flags @@ -143,22 +151,20 @@ static __maybe_unused void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || do_wakeup) return; - spin_lock_irqsave(&ehci->lock, flags); + spin_lock_irq(&ehci->lock); /* clear phy low-power mode before changing wakeup flags */ if (ehci->has_hostpc) { port = HCS_N_PORTS(ehci->hcs_params); while (port--) { - u32 __iomem *hostpc_reg; + u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; - hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs - + HOSTPC0 + 4 * port); temp = ehci_readl(ehci, hostpc_reg); ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg); } - spin_unlock_irqrestore(&ehci->lock, flags); + spin_unlock_irq(&ehci->lock); msleep(5); - spin_lock_irqsave(&ehci->lock, flags); + spin_lock_irq(&ehci->lock); } port = HCS_N_PORTS(ehci->hcs_params); @@ -185,10 +191,8 @@ static __maybe_unused void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, if (ehci->has_hostpc) { port = HCS_N_PORTS(ehci->hcs_params); while (port--) { - u32 __iomem *hostpc_reg; + u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; - hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs - + HOSTPC0 + 4 * port); temp = ehci_readl(ehci, hostpc_reg); ehci_writel(ehci, temp | HOSTPC_PHCD, hostpc_reg); } @@ -198,7 +202,7 @@ static __maybe_unused void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, if (!suspending && ehci_port_change(ehci)) usb_hcd_resume_root_hub(ehci_to_hcd(ehci)); - spin_unlock_irqrestore(&ehci->lock, flags); + spin_unlock_irq(&ehci->lock); } static int ehci_bus_suspend (struct usb_hcd *hcd) @@ -212,10 +216,13 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) if (time_before (jiffies, ehci->next_statechange)) msleep(5); - del_timer_sync(&ehci->watchdog); - del_timer_sync(&ehci->iaa_watchdog); + + /* stop the schedules */ + ehci_quiesce(ehci); spin_lock_irq (&ehci->lock); + if (ehci->rh_state < EHCI_RH_RUNNING) + goto done; /* Once the controller is stopped, port resumes that are already * in progress won't complete. Hence if remote wakeup is enabled @@ -230,11 +237,6 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) } } - /* stop schedules, clean any completed work */ - if (ehci->rh_state == EHCI_RH_RUNNING) - ehci_quiesce (ehci); - ehci_work(ehci); - /* Unlike other USB host controller types, EHCI doesn't have * any notion of "global" or bus-wide suspend. The driver has * to manually suspend all the active unsuspended ports, and @@ -285,11 +287,9 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) port = HCS_N_PORTS(ehci->hcs_params); while (port--) { - u32 __iomem *hostpc_reg; + u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; u32 t3; - hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs - + HOSTPC0 + 4 * port); t3 = ehci_readl(ehci, hostpc_reg); ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg); t3 = ehci_readl(ehci, hostpc_reg); @@ -298,6 +298,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) "succeeded" : "failed"); } } + spin_unlock_irq(&ehci->lock); /* Apparently some devices need a >= 1-uframe delay here */ if (ehci->bus_suspended) @@ -305,10 +306,18 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) /* turn off now-idle HC */ ehci_halt (ehci); + + spin_lock_irq(&ehci->lock); + if (ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_POLL_DEAD)) + ehci_handle_controller_death(ehci); + if (ehci->rh_state != EHCI_RH_RUNNING) + goto done; ehci->rh_state = EHCI_RH_SUSPENDED; - if (ehci->reclaim) - end_unlink_async(ehci); + end_unlink_async(ehci); + unlink_empty_async(ehci); + ehci_handle_intr_unlinks(ehci); + end_free_itds(ehci); /* allow remote wakeup */ mask = INTR_MASK; @@ -317,13 +326,13 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) ehci_writel(ehci, mask, &ehci->regs->intr_enable); ehci_readl(ehci, &ehci->regs->intr_enable); + done: ehci->next_statechange = jiffies + msecs_to_jiffies(10); + ehci->enabled_hrtimer_events = 0; + ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT; spin_unlock_irq (&ehci->lock); - /* ehci_work() may have re-enabled the watchdog timer, which we do not - * want, and so we must delete any pending watchdog timer events. - */ - del_timer_sync(&ehci->watchdog); + hrtimer_cancel(&ehci->hrtimer); return 0; } @@ -340,10 +349,8 @@ static int ehci_bus_resume (struct usb_hcd *hcd) if (time_before (jiffies, ehci->next_statechange)) msleep(5); spin_lock_irq (&ehci->lock); - if (!HCD_HW_ACCESSIBLE(hcd)) { - spin_unlock_irq(&ehci->lock); - return -ESHUTDOWN; - } + if (!HCD_HW_ACCESSIBLE(hcd) || ehci->shutdown) + goto shutdown; if (unlikely(ehci->debug)) { if (!dbgp_reset_prep()) @@ -382,16 +389,17 @@ static int ehci_bus_resume (struct usb_hcd *hcd) spin_unlock_irq(&ehci->lock); msleep(8); spin_lock_irq(&ehci->lock); + if (ehci->shutdown) + goto shutdown; /* clear phy low-power mode before resume */ if (ehci->bus_suspended && ehci->has_hostpc) { i = HCS_N_PORTS(ehci->hcs_params); while (i--) { if (test_bit(i, &ehci->bus_suspended)) { - u32 __iomem *hostpc_reg; + u32 __iomem *hostpc_reg = + &ehci->regs->hostpc[i]; - hostpc_reg = (u32 __iomem *)((u8 *) ehci->regs - + HOSTPC0 + 4 * i); temp = ehci_readl(ehci, hostpc_reg); ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg); @@ -400,6 +408,8 @@ static int ehci_bus_resume (struct usb_hcd *hcd) spin_unlock_irq(&ehci->lock); msleep(5); spin_lock_irq(&ehci->lock); + if (ehci->shutdown) + goto shutdown; } /* manually resume the ports we suspended during bus_suspend() */ @@ -420,6 +430,8 @@ static int ehci_bus_resume (struct usb_hcd *hcd) spin_unlock_irq(&ehci->lock); msleep(20); spin_lock_irq(&ehci->lock); + if (ehci->shutdown) + goto shutdown; } i = HCS_N_PORTS (ehci->hcs_params); @@ -431,27 +443,25 @@ static int ehci_bus_resume (struct usb_hcd *hcd) ehci_vdbg (ehci, "resumed port %d\n", i + 1); } } - (void) ehci_readl(ehci, &ehci->regs->command); - - /* maybe re-activate the schedule(s) */ - temp = 0; - if (ehci->async->qh_next.qh) - temp |= CMD_ASE; - if (ehci->periodic_sched) - temp |= CMD_PSE; - if (temp) { - ehci->command |= temp; - ehci_writel(ehci, ehci->command, &ehci->regs->command); - } ehci->next_statechange = jiffies + msecs_to_jiffies(5); + spin_unlock_irq(&ehci->lock); + + ehci_handover_companion_ports(ehci); /* Now we can safely re-enable irqs */ + spin_lock_irq(&ehci->lock); + if (ehci->shutdown) + goto shutdown; ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable); + (void) ehci_readl(ehci, &ehci->regs->intr_enable); + spin_unlock_irq(&ehci->lock); - spin_unlock_irq (&ehci->lock); - ehci_handover_companion_ports(ehci); return 0; + + shutdown: + spin_unlock_irq(&ehci->lock); + return -ESHUTDOWN; } #else @@ -667,7 +677,7 @@ static int ehci_hub_control ( int ports = HCS_N_PORTS (ehci->hcs_params); u32 __iomem *status_reg = &ehci->regs->port_status[ (wIndex & 0xff) - 1]; - u32 __iomem *hostpc_reg = NULL; + u32 __iomem *hostpc_reg = &ehci->regs->hostpc[(wIndex & 0xff) - 1]; u32 temp, temp1, status; unsigned long flags; int retval = 0; @@ -680,9 +690,6 @@ static int ehci_hub_control ( * power, "this is the one", etc. EHCI spec supports this. */ - if (ehci->has_hostpc) - hostpc_reg = (u32 __iomem *)((u8 *)ehci->regs - + HOSTPC0 + 4 * ((wIndex & 0xff) - 1)); spin_lock_irqsave (&ehci->lock, flags); switch (typeReq) { case ClearHubFeature: @@ -724,7 +731,7 @@ static int ehci_hub_control ( #ifdef CONFIG_USB_OTG if ((hcd->self.otg_port == (wIndex + 1)) && hcd->self.b_hnp_enable) { - otg_start_hnp(ehci->transceiver->otg); + otg_start_hnp(hcd->phy->otg); break; } #endif @@ -734,7 +741,7 @@ static int ehci_hub_control ( goto error; /* clear phy low-power mode before resume */ - if (hostpc_reg) { + if (ehci->has_hostpc) { temp1 = ehci_readl(ehci, hostpc_reg); ehci_writel(ehci, temp1 & ~HOSTPC_PHCD, hostpc_reg); @@ -984,7 +991,7 @@ static int ehci_hub_control ( temp &= ~PORT_WKCONN_E; temp |= PORT_WKDISC_E | PORT_WKOC_E; ehci_writel(ehci, temp | PORT_SUSPEND, status_reg); - if (hostpc_reg) { + if (ehci->has_hostpc) { spin_unlock_irqrestore(&ehci->lock, flags); msleep(5);/* 5ms for HCD enter low pwr mode */ spin_lock_irqsave(&ehci->lock, flags); @@ -1041,7 +1048,9 @@ static int ehci_hub_control ( case USB_PORT_FEAT_TEST: if (!selector || selector > 5) goto error; + spin_unlock_irqrestore(&ehci->lock, flags); ehci_quiesce(ehci); + spin_lock_irqsave(&ehci->lock, flags); /* Put all enabled ports into suspend */ while (ports--) { @@ -1053,7 +1062,11 @@ static int ehci_hub_control ( ehci_writel(ehci, temp | PORT_SUSPEND, sreg); } + + spin_unlock_irqrestore(&ehci->lock, flags); ehci_halt(ehci); + spin_lock_irqsave(&ehci->lock, flags); + temp = ehci_readl(ehci, status_reg); temp |= selector << 16; ehci_writel(ehci, temp, status_reg); diff --git a/drivers/usb/host/ehci-ixp4xx.c b/drivers/usb/host/ehci-ixp4xx.c index c4460f3d009f..488d401942e9 100644 --- a/drivers/usb/host/ehci-ixp4xx.c +++ b/drivers/usb/host/ehci-ixp4xx.c @@ -22,14 +22,10 @@ static int ixp4xx_ehci_init(struct usb_hcd *hcd) ehci->big_endian_mmio = 1; ehci->caps = hcd->regs + 0x100; - ehci->regs = hcd->regs + 0x100 - + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); hcd->has_tt = 1; - ehci_reset(ehci); - retval = ehci_init(hcd); + retval = ehci_setup(hcd); if (retval) return retval; diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c index 12f70c302b0b..ef2c3a1eca4b 100644 --- a/drivers/usb/host/ehci-mem.c +++ b/drivers/usb/host/ehci-mem.c @@ -64,10 +64,8 @@ static inline void ehci_qtd_free (struct ehci_hcd *ehci, struct ehci_qtd *qtd) } -static void qh_destroy(struct ehci_qh *qh) +static void qh_destroy(struct ehci_hcd *ehci, struct ehci_qh *qh) { - struct ehci_hcd *ehci = qh->ehci; - /* clean qtds first, and know this is not linked */ if (!list_empty (&qh->qtd_list) || qh->qh_next.ptr) { ehci_dbg (ehci, "unused qh not empty!\n"); @@ -92,8 +90,6 @@ static struct ehci_qh *ehci_qh_alloc (struct ehci_hcd *ehci, gfp_t flags) if (!qh->hw) goto fail; memset(qh->hw, 0, sizeof *qh->hw); - qh->refcount = 1; - qh->ehci = ehci; qh->qh_dma = dma; // INIT_LIST_HEAD (&qh->qh_list); INIT_LIST_HEAD (&qh->qtd_list); @@ -113,20 +109,6 @@ fail: return NULL; } -/* to share a qh (cpu threads, or hc) */ -static inline struct ehci_qh *qh_get (struct ehci_qh *qh) -{ - WARN_ON(!qh->refcount); - qh->refcount++; - return qh; -} - -static inline void qh_put (struct ehci_qh *qh) -{ - if (!--qh->refcount) - qh_destroy(qh); -} - /*-------------------------------------------------------------------------*/ /* The queue heads and transfer descriptors are managed from pools tied @@ -136,13 +118,12 @@ static inline void qh_put (struct ehci_qh *qh) static void ehci_mem_cleanup (struct ehci_hcd *ehci) { - free_cached_lists(ehci); if (ehci->async) - qh_put (ehci->async); + qh_destroy(ehci, ehci->async); ehci->async = NULL; if (ehci->dummy) - qh_put(ehci->dummy); + qh_destroy(ehci, ehci->dummy); ehci->dummy = NULL; /* DMA consistent memory and pools */ diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c index 9803a55fd5f4..17dd9e94001e 100644 --- a/drivers/usb/host/ehci-msm.c +++ b/drivers/usb/host/ehci-msm.c @@ -145,8 +145,8 @@ static int ehci_msm_probe(struct platform_device *pdev) * powering up VBUS, mapping of registers address space and power * management. */ - phy = usb_get_transceiver(); - if (!phy) { + phy = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(phy)) { dev_err(&pdev->dev, "unable to find transceiver\n"); ret = -ENODEV; goto unmap; @@ -169,7 +169,7 @@ static int ehci_msm_probe(struct platform_device *pdev) return 0; put_transceiver: - usb_put_transceiver(phy); + usb_put_phy(phy); unmap: iounmap(hcd->regs); put_hcd: @@ -187,7 +187,7 @@ static int __devexit ehci_msm_remove(struct platform_device *pdev) pm_runtime_set_suspended(&pdev->dev); otg_set_host(phy->otg, NULL); - usb_put_transceiver(phy); + usb_put_phy(phy); usb_put_hcd(hcd); @@ -198,24 +198,11 @@ static int __devexit ehci_msm_remove(struct platform_device *pdev) static int ehci_msm_pm_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - bool wakeup = device_may_wakeup(dev); + bool do_wakeup = device_may_wakeup(dev); dev_dbg(dev, "ehci-msm PM suspend\n"); - /* - * EHCI helper function has also the same check before manipulating - * port wakeup flags. We do check here the same condition before - * calling the same helper function to avoid bringing hardware - * from Low power mode when there is no need for adjusting port - * wakeup flags. - */ - if (hcd->self.root_hub->do_remote_wakeup && !wakeup) { - pm_runtime_resume(dev); - ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), - wakeup); - } - - return 0; + return ehci_suspend(hcd, do_wakeup); } static int ehci_msm_pm_resume(struct device *dev) @@ -223,7 +210,7 @@ static int ehci_msm_pm_resume(struct device *dev) struct usb_hcd *hcd = dev_get_drvdata(dev); dev_dbg(dev, "ehci-msm PM resume\n"); - ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd)); + ehci_resume(hcd, false); return 0; } diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c index a936bbcff8f4..f6df1ccc9617 100644 --- a/drivers/usb/host/ehci-mv.c +++ b/drivers/usb/host/ehci-mv.c @@ -13,6 +13,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/usb/otg.h> #include <linux/platform_data/mv_usb.h> @@ -76,7 +77,6 @@ static void mv_ehci_disable(struct ehci_hcd_mv *ehci_mv) static int mv_ehci_reset(struct usb_hcd *hcd) { - struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct device *dev = hcd->self.controller; struct ehci_hcd_mv *ehci_mv = dev_get_drvdata(dev); int retval; @@ -86,25 +86,13 @@ static int mv_ehci_reset(struct usb_hcd *hcd) return -ENODEV; } - /* - * data structure init - */ - retval = ehci_init(hcd); - if (retval) { - dev_err(dev, "ehci_init failed %d\n", retval); - return retval; - } - hcd->has_tt = 1; - ehci->sbrn = 0x20; - retval = ehci_reset(ehci); - if (retval) { - dev_err(dev, "ehci_reset failed %d\n", retval); - return retval; - } + retval = ehci_setup(hcd); + if (retval) + dev_err(dev, "ehci_setup failed %d\n", retval); - return 0; + return retval; } static const struct hc_driver mv_ehci_hc_driver = { @@ -247,14 +235,12 @@ static int mv_ehci_probe(struct platform_device *pdev) ehci = hcd_to_ehci(hcd); ehci->caps = (struct ehci_caps *) ehci_mv->cap_regs; - ehci->regs = (struct ehci_regs *) ehci_mv->op_regs; - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); ehci_mv->mode = pdata->mode; if (ehci_mv->mode == MV_USB_MODE_OTG) { #ifdef CONFIG_USB_OTG_UTILS - ehci_mv->otg = usb_get_transceiver(); - if (!ehci_mv->otg) { + ehci_mv->otg = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(ehci_mv->otg)) { dev_err(&pdev->dev, "unable to find transceiver\n"); retval = -ENODEV; @@ -302,8 +288,8 @@ err_set_vbus: pdata->set_vbus(0); #ifdef CONFIG_USB_OTG_UTILS err_put_transceiver: - if (ehci_mv->otg) - usb_put_transceiver(ehci_mv->otg); + if (!IS_ERR_OR_NULL(ehci_mv->otg)) + usb_put_phy(ehci_mv->otg); #endif err_disable_clk: mv_ehci_disable(ehci_mv); @@ -331,9 +317,9 @@ static int mv_ehci_remove(struct platform_device *pdev) if (hcd->rh_registered) usb_remove_hcd(hcd); - if (ehci_mv->otg) { + if (!IS_ERR_OR_NULL(ehci_mv->otg)) { otg_set_host(ehci_mv->otg->otg, NULL); - usb_put_transceiver(ehci_mv->otg); + usb_put_phy(ehci_mv->otg); } if (ehci_mv->mode == MV_USB_MODE_HOST) { diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c index c778ffe4e4e5..34201372c85f 100644 --- a/drivers/usb/host/ehci-mxc.c +++ b/drivers/usb/host/ehci-mxc.c @@ -42,27 +42,12 @@ static int ehci_mxc_setup(struct usb_hcd *hcd) struct ehci_hcd *ehci = hcd_to_ehci(hcd); int retval; - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - hcd->has_tt = 1; - retval = ehci_halt(ehci); + retval = ehci_setup(hcd); if (retval) return retval; - /* data structure init */ - retval = ehci_init(hcd); - if (retval) - return retval; - - ehci->sbrn = 0x20; - - ehci_reset(ehci); - ehci_port_power(ehci, 0); return 0; } diff --git a/drivers/usb/host/ehci-octeon.c b/drivers/usb/host/ehci-octeon.c index c0104882c72d..ba26957abf46 100644 --- a/drivers/usb/host/ehci-octeon.c +++ b/drivers/usb/host/ehci-octeon.c @@ -56,7 +56,7 @@ static const struct hc_driver ehci_octeon_hc_driver = { /* * basic lifecycle operations */ - .reset = ehci_init, + .reset = ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, @@ -150,12 +150,6 @@ static int ehci_octeon_drv_probe(struct platform_device *pdev) #endif ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - - ehci_reset(ehci); ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) { diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index c30435499a02..ec21f4a4a056 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -115,9 +115,8 @@ static void omap_ehci_erratum_i693(struct ehci_hcd *ehci) clk_disable(usbhost_p2_fck); } -static void omap_ehci_soft_phy_reset(struct platform_device *pdev, u8 port) +static void omap_ehci_soft_phy_reset(struct usb_hcd *hcd, u8 port) { - struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev); unsigned long timeout = jiffies + msecs_to_jiffies(1000); unsigned reg = 0; @@ -139,12 +138,63 @@ static void omap_ehci_soft_phy_reset(struct platform_device *pdev, u8 port) cpu_relax(); if (time_after(jiffies, timeout)) { - dev_dbg(&pdev->dev, "phy reset operation timed out\n"); + dev_dbg(hcd->self.controller, + "phy reset operation timed out\n"); break; } } } +static int omap_ehci_init(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int rc; + struct ehci_hcd_omap_platform_data *pdata; + + pdata = hcd->self.controller->platform_data; + if (pdata->phy_reset) { + if (gpio_is_valid(pdata->reset_gpio_port[0])) + gpio_request_one(pdata->reset_gpio_port[0], + GPIOF_OUT_INIT_LOW, "USB1 PHY reset"); + + if (gpio_is_valid(pdata->reset_gpio_port[1])) + gpio_request_one(pdata->reset_gpio_port[1], + GPIOF_OUT_INIT_LOW, "USB2 PHY reset"); + + /* Hold the PHY in RESET for enough time till DIR is high */ + udelay(10); + } + + /* Soft reset the PHY using PHY reset command over ULPI */ + if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY) + omap_ehci_soft_phy_reset(hcd, 0); + if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY) + omap_ehci_soft_phy_reset(hcd, 1); + + /* we know this is the memory we want, no need to ioremap again */ + ehci->caps = hcd->regs; + + rc = ehci_setup(hcd); + + if (pdata->phy_reset) { + /* Hold the PHY in RESET for enough time till + * PHY is settled and ready + */ + udelay(10); + + if (gpio_is_valid(pdata->reset_gpio_port[0])) + gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1); + + if (gpio_is_valid(pdata->reset_gpio_port[1])) + gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1); + } + + /* root ports should always stay powered */ + ehci_port_power(ehci, 1); + + return rc; +} + static int omap_ehci_hub_control( struct usb_hcd *hcd, u16 typeReq, @@ -219,7 +269,6 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) struct resource *res; struct usb_hcd *hcd; void __iomem *regs; - struct ehci_hcd *omap_ehci; int ret = -ENODEV; int irq; int i; @@ -281,18 +330,6 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) } } - /* Hold PHYs in reset while initializing EHCI controller */ - if (pdata->phy_reset) { - if (gpio_is_valid(pdata->reset_gpio_port[0])) - gpio_set_value_cansleep(pdata->reset_gpio_port[0], 0); - - if (gpio_is_valid(pdata->reset_gpio_port[1])) - gpio_set_value_cansleep(pdata->reset_gpio_port[1], 0); - - /* Hold the PHY in RESET for enough time till DIR is high */ - udelay(10); - } - pm_runtime_enable(dev); pm_runtime_get_sync(dev); @@ -308,49 +345,12 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) ehci_write(regs, EHCI_INSNREG04, EHCI_INSNREG04_DISABLE_UNSUSPEND); - /* Soft reset the PHY using PHY reset command over ULPI */ - if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY) - omap_ehci_soft_phy_reset(pdev, 0); - if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY) - omap_ehci_soft_phy_reset(pdev, 1); - - omap_ehci = hcd_to_ehci(hcd); - omap_ehci->sbrn = 0x20; - - /* we know this is the memory we want, no need to ioremap again */ - omap_ehci->caps = hcd->regs; - omap_ehci->regs = hcd->regs - + HC_LENGTH(ehci, readl(&omap_ehci->caps->hc_capbase)); - - dbg_hcs_params(omap_ehci, "reset"); - dbg_hcc_params(omap_ehci, "reset"); - - /* cache this readonly data; minimize chip reads */ - omap_ehci->hcs_params = readl(&omap_ehci->caps->hcs_params); - - ehci_reset(omap_ehci); ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) { dev_err(dev, "failed to add hcd with err %d\n", ret); - goto err_add_hcd; + goto err_pm_runtime; } - if (pdata->phy_reset) { - /* Hold the PHY in RESET for enough time till - * PHY is settled and ready - */ - udelay(10); - - if (gpio_is_valid(pdata->reset_gpio_port[0])) - gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1); - - if (gpio_is_valid(pdata->reset_gpio_port[1])) - gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1); - } - - /* root ports should always stay powered */ - ehci_port_power(omap_ehci, 1); - /* get clocks */ utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk"); if (IS_ERR(utmi_p1_fck)) { @@ -422,8 +422,12 @@ err_utmi_p1_fck: clk_put(utmi_p1_fck); err_add_hcd: + usb_remove_hcd(hcd); + +err_pm_runtime: disable_put_regulator(pdata); pm_runtime_put_sync(dev); + usb_put_hcd(hcd); err_io: iounmap(regs); @@ -506,7 +510,7 @@ static const struct hc_driver ehci_omap_hc_driver = { /* * basic lifecycle operations */ - .reset = ehci_init, + .reset = omap_ehci_init, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 82de1073aa52..9408da83eaf1 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -106,21 +106,10 @@ static int ehci_orion_setup(struct usb_hcd *hcd) struct ehci_hcd *ehci = hcd_to_ehci(hcd); int retval; - hcd->has_tt = 1; - - retval = ehci_halt(ehci); - if (retval) - return retval; - - /* - * data structure init - */ - retval = ehci_init(hcd); + retval = ehci_setup(hcd); if (retval) return retval; - ehci_reset(ehci); - ehci_port_power(ehci, 0); return retval; @@ -261,11 +250,7 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev) ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs + 0x100; - ehci->regs = hcd->regs + 0x100 + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); hcd->has_tt = 1; - ehci->sbrn = 0x20; /* * (Re-)program MBUS remapping windows if we are asked to. diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 123481793a47..2cb7d370c4ef 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -54,6 +54,17 @@ static int ehci_pci_setup(struct usb_hcd *hcd) u32 temp; int retval; + ehci->caps = hcd->regs; + + /* + * ehci_init() causes memory for DMA transfers to be + * allocated. Thus, any vendor-specific workarounds based on + * limiting the type of memory used for DMA transfers must + * happen before ehci_setup() is called. + * + * Most other workarounds can be done either before or after + * init and reset; they are located here too. + */ switch (pdev->vendor) { case PCI_VENDOR_ID_TOSHIBA_2: /* celleb's companion chip */ @@ -66,20 +77,6 @@ static int ehci_pci_setup(struct usb_hcd *hcd) #endif } break; - } - - ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - /* ehci_init() causes memory for DMA transfers to be - * allocated. Thus, any vendor-specific workarounds based on - * limiting the type of memory used for DMA transfers must - * happen before ehci_init() is called. */ - switch (pdev->vendor) { case PCI_VENDOR_ID_NVIDIA: /* NVidia reports that certain chips don't handle * QH, ITD, or SITD addresses above 2GB. (But TD, @@ -95,61 +92,24 @@ static int ehci_pci_setup(struct usb_hcd *hcd) ehci_warn(ehci, "can't enable NVidia " "workaround for >2GB RAM\n"); break; - } - break; - } - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - - retval = ehci_halt(ehci); - if (retval) - return retval; - if ((pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x7808) || - (pdev->vendor == PCI_VENDOR_ID_ATI && pdev->device == 0x4396)) { - /* EHCI controller on AMD SB700/SB800/Hudson-2/3 platforms may - * read/write memory space which does not belong to it when - * there is NULL pointer with T-bit set to 1 in the frame list - * table. To avoid the issue, the frame list link pointer - * should always contain a valid pointer to a inactive qh. + /* Some NForce2 chips have problems with selective suspend; + * fixed in newer silicon. */ - ehci->use_dummy_qh = 1; - ehci_info(ehci, "applying AMD SB700/SB800/Hudson-2/3 EHCI " - "dummy qh workaround\n"); - } - - /* data structure init */ - retval = ehci_init(hcd); - if (retval) - return retval; - - switch (pdev->vendor) { - case PCI_VENDOR_ID_NEC: - ehci->need_io_watchdog = 0; + case 0x0068: + if (pdev->revision < 0xa4) + ehci->no_selective_suspend = 1; + break; + } break; case PCI_VENDOR_ID_INTEL: - ehci->need_io_watchdog = 0; ehci->fs_i_thresh = 1; - if (pdev->device == 0x27cc) { - ehci->broken_periodic = 1; - ehci_info(ehci, "using broken periodic workaround\n"); - } - if (pdev->device == 0x0806 || pdev->device == 0x0811 - || pdev->device == 0x0829) { - ehci_info(ehci, "disable lpm for langwell/penwell\n"); - ehci->has_lpm = 0; - } - if (pdev->device == PCI_DEVICE_ID_INTEL_CE4100_USB) { + if (pdev->device == PCI_DEVICE_ID_INTEL_CE4100_USB) hcd->has_tt = 1; - tdi_reset(ehci); - } break; case PCI_VENDOR_ID_TDI: - if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) { + if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) hcd->has_tt = 1; - tdi_reset(ehci); - } break; case PCI_VENDOR_ID_AMD: /* AMD PLL quirk */ @@ -161,28 +121,17 @@ static int ehci_pci_setup(struct usb_hcd *hcd) retval = -EIO; goto done; } - break; - case PCI_VENDOR_ID_NVIDIA: - switch (pdev->device) { - /* Some NForce2 chips have problems with selective suspend; - * fixed in newer silicon. - */ - case 0x0068: - if (pdev->revision < 0xa4) - ehci->no_selective_suspend = 1; - break; - /* MCP89 chips on the MacBookAir3,1 give EPROTO when - * fetching device descriptors unless LPM is disabled. - * There are also intermittent problems enumerating - * devices with PPCD enabled. + /* + * EHCI controller on AMD SB700/SB800/Hudson-2/3 platforms may + * read/write memory space which does not belong to it when + * there is NULL pointer with T-bit set to 1 in the frame list + * table. To avoid the issue, the frame list link pointer + * should always contain a valid pointer to a inactive qh. */ - case 0x0d9d: - ehci_info(ehci, "disable lpm/ppcd for nvidia mcp89"); - ehci->has_lpm = 0; - ehci->has_ppcd = 0; - ehci->command &= ~CMD_PPCEE; - break; + if (pdev->device == 0x7808) { + ehci->use_dummy_qh = 1; + ehci_info(ehci, "applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround\n"); } break; case PCI_VENDOR_ID_VIA: @@ -203,6 +152,18 @@ static int ehci_pci_setup(struct usb_hcd *hcd) /* AMD PLL quirk */ if (usb_amd_find_chipset_info()) ehci->amd_pll_fix = 1; + + /* + * EHCI controller on AMD SB700/SB800/Hudson-2/3 platforms may + * read/write memory space which does not belong to it when + * there is NULL pointer with T-bit set to 1 in the frame list + * table. To avoid the issue, the frame list link pointer + * should always contain a valid pointer to a inactive qh. + */ + if (pdev->device == 0x4396) { + ehci->use_dummy_qh = 1; + ehci_info(ehci, "applying AMD SB700/SB800/Hudson-2/3 EHCI dummy qh workaround\n"); + } /* SB600 and old version of SB700 have a bug in EHCI controller, * which causes usb devices lose response in some cases. */ @@ -231,6 +192,40 @@ static int ehci_pci_setup(struct usb_hcd *hcd) break; } + retval = ehci_setup(hcd); + if (retval) + return retval; + + /* These workarounds need to be applied after ehci_setup() */ + switch (pdev->vendor) { + case PCI_VENDOR_ID_NEC: + ehci->need_io_watchdog = 0; + break; + case PCI_VENDOR_ID_INTEL: + ehci->need_io_watchdog = 0; + if (pdev->device == 0x0806 || pdev->device == 0x0811 + || pdev->device == 0x0829) { + ehci_info(ehci, "disable lpm for langwell/penwell\n"); + ehci->has_lpm = 0; + } + break; + case PCI_VENDOR_ID_NVIDIA: + switch (pdev->device) { + /* MCP89 chips on the MacBookAir3,1 give EPROTO when + * fetching device descriptors unless LPM is disabled. + * There are also intermittent problems enumerating + * devices with PPCD enabled. + */ + case 0x0d9d: + ehci_info(ehci, "disable lpm/ppcd for nvidia mcp89"); + ehci->has_lpm = 0; + ehci->has_ppcd = 0; + ehci->command &= ~CMD_PPCEE; + break; + } + break; + } + /* optional debug port, normally in the first BAR */ temp = pci_find_capability(pdev, 0x0a); if (temp) { @@ -238,7 +233,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd) temp >>= 16; if ((temp & (3 << 13)) == (1 << 13)) { temp &= 0x1fff; - ehci->debug = ehci_to_hcd(ehci)->regs + temp; + ehci->debug = hcd->regs + temp; temp = ehci_readl(ehci, &ehci->debug->control); ehci_info(ehci, "debug port %d%s\n", HCS_DEBUG_PORT(ehci->hcs_params), @@ -250,8 +245,6 @@ static int ehci_pci_setup(struct usb_hcd *hcd) } } - ehci_reset(ehci); - /* at least the Genesys GL880S needs fixup here */ temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params); temp &= 0x0f; @@ -275,10 +268,11 @@ static int ehci_pci_setup(struct usb_hcd *hcd) } /* Serial Bus Release Number is at PCI 0x60 offset */ - pci_read_config_byte(pdev, 0x60, &ehci->sbrn); if (pdev->vendor == PCI_VENDOR_ID_STMICRO && pdev->device == PCI_DEVICE_ID_STMICRO_USB_HOST) - ehci->sbrn = 0x20; /* ConneXT has no sbrn register */ + ; /* ConneXT has no sbrn register */ + else + pci_read_config_byte(pdev, 0x60, &ehci->sbrn); /* Keep this around for a while just in case some EHCI * implementation uses legacy PCI PM support. This test @@ -331,29 +325,7 @@ done: static int ehci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) { - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - unsigned long flags; - int rc = 0; - - if (time_before(jiffies, ehci->next_statechange)) - msleep(10); - - /* Root hub was already suspended. Disable irq emission and - * mark HW unaccessible. The PM and USB cores make sure that - * the root hub is either suspended or stopped. - */ - ehci_prepare_ports_for_controller_suspend(ehci, do_wakeup); - spin_lock_irqsave (&ehci->lock, flags); - ehci_writel(ehci, 0, &ehci->regs->intr_enable); - (void)ehci_readl(ehci, &ehci->regs->intr_enable); - - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - spin_unlock_irqrestore (&ehci->lock, flags); - - // could save FLADJ in case of Vaux power loss - // ... we'd only use it to handle clock skew - - return rc; + return ehci_suspend(hcd, do_wakeup); } static bool usb_is_intel_switchable_ehci(struct pci_dev *pdev) @@ -402,54 +374,8 @@ static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated) if (usb_is_intel_switchable_ehci(pdev)) ehci_enable_xhci_companion(); - // maybe restore FLADJ - - if (time_before(jiffies, ehci->next_statechange)) - msleep(100); - - /* Mark hardware accessible again as we are out of D3 state by now */ - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - - /* If CF is still set and we aren't resuming from hibernation - * then we maintained PCI Vaux power. - * Just undo the effect of ehci_pci_suspend(). - */ - if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF && - !hibernated) { - int mask = INTR_MASK; - - ehci_prepare_ports_for_controller_resume(ehci); - if (!hcd->self.root_hub->do_remote_wakeup) - mask &= ~STS_PCD; - ehci_writel(ehci, mask, &ehci->regs->intr_enable); - ehci_readl(ehci, &ehci->regs->intr_enable); - return 0; - } - - usb_root_hub_lost_power(hcd->self.root_hub); - - /* Else reset, to cope with power loss or flush-to-storage - * style "resume" having let BIOS kick in during reboot. - */ - (void) ehci_halt(ehci); - (void) ehci_reset(ehci); - (void) ehci_pci_reinit(ehci, pdev); - - /* emptying the schedule aborts any urbs */ - spin_lock_irq(&ehci->lock); - if (ehci->reclaim) - end_unlink_async(ehci); - ehci_work(ehci); - spin_unlock_irq(&ehci->lock); - - ehci_writel(ehci, ehci->command, &ehci->regs->command); - ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); - ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ - - /* here we "know" root ports should always stay powered */ - ehci_port_power(ehci, 1); - - ehci->rh_state = EHCI_RH_SUSPENDED; + if (ehci_resume(hcd, hibernated) != 0) + (void) ehci_pci_reinit(ehci, pdev); return 0; } #endif diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index dfe881a34ae2..4b1d896d5a22 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -153,17 +153,16 @@ static int __devexit ehci_platform_remove(struct platform_device *dev) static int ehci_platform_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - bool wakeup = device_may_wakeup(dev); + bool do_wakeup = device_may_wakeup(dev); - ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), wakeup); - return 0; + return ehci_suspend(hcd, do_wakeup); } static int ehci_platform_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd)); + ehci_resume(hcd, false); return 0; } diff --git a/drivers/usb/host/ehci-pmcmsp.c b/drivers/usb/host/ehci-pmcmsp.c index e8d54de44acc..087aee2a904f 100644 --- a/drivers/usb/host/ehci-pmcmsp.c +++ b/drivers/usb/host/ehci-pmcmsp.c @@ -78,27 +78,14 @@ static int ehci_msp_setup(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); int retval; + ehci->big_endian_mmio = 1; ehci->big_endian_desc = 1; ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); hcd->has_tt = 1; - retval = ehci_halt(ehci); - if (retval) - return retval; - - ehci_reset(ehci); - - /* data structure init */ - retval = ehci_init(hcd); + retval = ehci_setup(hcd); if (retval) return retval; diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c index 41d11fe14252..bbbe89dfd886 100644 --- a/drivers/usb/host/ehci-ppc-of.c +++ b/drivers/usb/host/ehci-ppc-of.c @@ -17,24 +17,6 @@ #include <linux/of.h> #include <linux/of_platform.h> -/* called during probe() after chip reset completes */ -static int ehci_ppc_of_setup(struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - int retval; - - retval = ehci_halt(ehci); - if (retval) - return retval; - - retval = ehci_init(hcd); - if (retval) - return retval; - - ehci->sbrn = 0x20; - return ehci_reset(ehci); -} - static const struct hc_driver ehci_ppc_of_hc_driver = { .description = hcd_name, @@ -50,7 +32,7 @@ static const struct hc_driver ehci_ppc_of_hc_driver = { /* * basic lifecycle operations */ - .reset = ehci_ppc_of_setup, + .reset = ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, @@ -178,11 +160,6 @@ static int __devinit ehci_hcd_ppc_of_probe(struct platform_device *op) ehci->big_endian_desc = 1; ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); if (of_device_is_compatible(dn, "ibm,usb-ehci-440epx")) { rv = ppc44x_enable_bmt(dn); diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c index a20e496eb479..45a356e9f138 100644 --- a/drivers/usb/host/ehci-ps3.c +++ b/drivers/usb/host/ehci-ps3.c @@ -55,28 +55,12 @@ static int ps3_ehci_hc_reset(struct usb_hcd *hcd) struct ehci_hcd *ehci = hcd_to_ehci(hcd); ehci->big_endian_mmio = 1; - ehci->caps = hcd->regs; - ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci, - &ehci->caps->hc_capbase)); - - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - - result = ehci_halt(ehci); + result = ehci_setup(hcd); if (result) return result; - result = ehci_init(hcd); - - if (result) - return result; - - ehci_reset(ehci); - ps3_ehci_setup_insnreg(ehci); return result; diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 4378bf72bbac..9bc39ca460c8 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -100,7 +100,7 @@ qh_update (struct ehci_hcd *ehci, struct ehci_qh *qh, struct ehci_qtd *qtd) * and set the pseudo-toggle in udev. Only usb_clear_halt() will * ever clear it. */ - if (!(hw->hw_info1 & cpu_to_hc32(ehci, 1 << 14))) { + if (!(hw->hw_info1 & cpu_to_hc32(ehci, QH_TOGGLE_CTL))) { unsigned is_out, epnum; is_out = qh->is_out; @@ -265,7 +265,6 @@ __acquires(ehci->lock) /* ... update hc-wide periodic stats (for usbfs) */ ehci_to_hcd(ehci)->self.bandwidth_int_reqs--; } - qh_put (qh); } if (unlikely(urb->unlinked)) { @@ -294,9 +293,6 @@ __acquires(ehci->lock) spin_lock (&ehci->lock); } -static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh); -static void unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh); - static int qh_schedule (struct ehci_hcd *ehci, struct ehci_qh *qh); /* @@ -326,7 +322,7 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh) * * It's a bug for qh->qh_state to be anything other than * QH_STATE_IDLE, unless our caller is scan_async() or - * scan_periodic(). + * scan_intr(). */ state = qh->qh_state; qh->qh_state = QH_STATE_COMPLETING; @@ -434,7 +430,7 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh) /* stop scanning when we reach qtds the hc is using */ } else if (likely (!stopped - && ehci->rh_state == EHCI_RH_RUNNING)) { + && ehci->rh_state >= EHCI_RH_RUNNING)) { break; /* scan the whole queue for unlinks whenever it stops */ @@ -442,7 +438,7 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh) stopped = 1; /* cancel everything if we halt, suspend, etc */ - if (ehci->rh_state != EHCI_RH_RUNNING) + if (ehci->rh_state < EHCI_RH_RUNNING) last_status = -ESHUTDOWN; /* this qtd is active; skip it unless a previous qtd @@ -836,7 +832,6 @@ qh_make ( is_input, 0, hb_mult(maxp) * max_packet(maxp))); qh->start = NO_FRAME; - qh->stamp = ehci->periodic_stamp; if (urb->dev->speed == USB_SPEED_HIGH) { qh->c_usecs = 0; @@ -887,7 +882,7 @@ qh_make ( /* using TT? */ switch (urb->dev->speed) { case USB_SPEED_LOW: - info1 |= (1 << 12); /* EPS "low" */ + info1 |= QH_LOW_SPEED; /* FALL THROUGH */ case USB_SPEED_FULL: @@ -895,8 +890,8 @@ qh_make ( if (type != PIPE_INTERRUPT) info1 |= (EHCI_TUNE_RL_TT << 28); if (type == PIPE_CONTROL) { - info1 |= (1 << 27); /* for TT */ - info1 |= 1 << 14; /* toggle from qtd */ + info1 |= QH_CONTROL_EP; /* for TT */ + info1 |= QH_TOGGLE_CTL; /* toggle from qtd */ } info1 |= maxp << 16; @@ -921,11 +916,11 @@ qh_make ( break; case USB_SPEED_HIGH: /* no TT involved */ - info1 |= (2 << 12); /* EPS "high" */ + info1 |= QH_HIGH_SPEED; if (type == PIPE_CONTROL) { info1 |= (EHCI_TUNE_RL_HS << 28); info1 |= 64 << 16; /* usb2 fixed maxpacket */ - info1 |= 1 << 14; /* toggle from qtd */ + info1 |= QH_TOGGLE_CTL; /* toggle from qtd */ info2 |= (EHCI_TUNE_MULT_HS << 30); } else if (type == PIPE_BULK) { info1 |= (EHCI_TUNE_RL_HS << 28); @@ -946,7 +941,7 @@ qh_make ( ehci_dbg(ehci, "bogus dev %p speed %d\n", urb->dev, urb->dev->speed); done: - qh_put (qh); + qh_destroy(ehci, qh); return NULL; } @@ -965,6 +960,31 @@ done: /*-------------------------------------------------------------------------*/ +static void enable_async(struct ehci_hcd *ehci) +{ + if (ehci->async_count++) + return; + + /* Stop waiting to turn off the async schedule */ + ehci->enabled_hrtimer_events &= ~BIT(EHCI_HRTIMER_DISABLE_ASYNC); + + /* Don't start the schedule until ASS is 0 */ + ehci_poll_ASS(ehci); + turn_on_io_watchdog(ehci); +} + +static void disable_async(struct ehci_hcd *ehci) +{ + if (--ehci->async_count) + return; + + /* The async schedule and async_unlink list are supposed to be empty */ + WARN_ON(ehci->async->qh_next.qh || ehci->async_unlink); + + /* Don't turn off the schedule until ASS is 1 */ + ehci_poll_ASS(ehci); +} + /* move qh (and its qtds) onto async queue; maybe enable queue. */ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh) @@ -978,24 +998,11 @@ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh) WARN_ON(qh->qh_state != QH_STATE_IDLE); - /* (re)start the async schedule? */ - head = ehci->async; - timer_action_done (ehci, TIMER_ASYNC_OFF); - if (!head->qh_next.qh) { - if (!(ehci->command & CMD_ASE)) { - /* in case a clear of CMD_ASE didn't take yet */ - (void)handshake(ehci, &ehci->regs->status, - STS_ASS, 0, 150); - ehci->command |= CMD_ASE; - ehci_writel(ehci, ehci->command, &ehci->regs->command); - /* posted write need not be known to HC yet ... */ - } - } - /* clear halt and/or toggle; and maybe recover from silicon quirk */ qh_refresh(ehci, qh); /* splice right after start */ + head = ehci->async; qh->qh_next = head->qh_next; qh->hw->hw_next = head->hw->hw_next; wmb (); @@ -1003,10 +1010,11 @@ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh) head->qh_next.qh = qh; head->hw->hw_next = dma; - qh_get(qh); qh->xacterrs = 0; qh->qh_state = QH_STATE_LINKED; /* qtd completions reported later by interrupt */ + + enable_async(ehci); } /*-------------------------------------------------------------------------*/ @@ -1090,7 +1098,7 @@ static struct ehci_qh *qh_append_tds ( wmb (); dummy->hw_token = token; - urb->hcpriv = qh_get (qh); + urb->hcpriv = qh; } } return qh; @@ -1155,117 +1163,155 @@ submit_async ( /*-------------------------------------------------------------------------*/ -/* the async qh for the qtds being reclaimed are now unlinked from the HC */ - -static void end_unlink_async (struct ehci_hcd *ehci) +static void single_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh) { - struct ehci_qh *qh = ehci->reclaim; - struct ehci_qh *next; + struct ehci_qh *prev; - iaa_watchdog_done(ehci); + /* Add to the end of the list of QHs waiting for the next IAAD */ + qh->qh_state = QH_STATE_UNLINK; + if (ehci->async_unlink) + ehci->async_unlink_last->unlink_next = qh; + else + ehci->async_unlink = qh; + ehci->async_unlink_last = qh; - // qh->hw_next = cpu_to_hc32(qh->qh_dma); - qh->qh_state = QH_STATE_IDLE; - qh->qh_next.qh = NULL; - qh_put (qh); // refcount from reclaim + /* Unlink it from the schedule */ + prev = ehci->async; + while (prev->qh_next.qh != qh) + prev = prev->qh_next.qh; - /* other unlink(s) may be pending (in QH_STATE_UNLINK_WAIT) */ - next = qh->reclaim; - ehci->reclaim = next; - qh->reclaim = NULL; + prev->hw->hw_next = qh->hw->hw_next; + prev->qh_next = qh->qh_next; + if (ehci->qh_scan_next == qh) + ehci->qh_scan_next = qh->qh_next.qh; +} - qh_completions (ehci, qh); +static void start_iaa_cycle(struct ehci_hcd *ehci, bool nested) +{ + /* + * Do nothing if an IAA cycle is already running or + * if one will be started shortly. + */ + if (ehci->async_iaa || ehci->async_unlinking) + return; - if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) { - qh_link_async (ehci, qh); - } else { - /* it's not free to turn the async schedule on/off; leave it - * active but idle for a while once it empties. - */ - if (ehci->rh_state == EHCI_RH_RUNNING - && ehci->async->qh_next.qh == NULL) - timer_action (ehci, TIMER_ASYNC_OFF); - } - qh_put(qh); /* refcount from async list */ + /* Do all the waiting QHs at once */ + ehci->async_iaa = ehci->async_unlink; + ehci->async_unlink = NULL; - if (next) { - ehci->reclaim = NULL; - start_unlink_async (ehci, next); + /* If the controller isn't running, we don't have to wait for it */ + if (unlikely(ehci->rh_state < EHCI_RH_RUNNING)) { + if (!nested) /* Avoid recursion */ + end_unlink_async(ehci); + + /* Otherwise start a new IAA cycle */ + } else if (likely(ehci->rh_state == EHCI_RH_RUNNING)) { + /* Make sure the unlinks are all visible to the hardware */ + wmb(); + + ehci_writel(ehci, ehci->command | CMD_IAAD, + &ehci->regs->command); + ehci_readl(ehci, &ehci->regs->command); + ehci_enable_event(ehci, EHCI_HRTIMER_IAA_WATCHDOG, true); } +} + +/* the async qh for the qtds being unlinked are now gone from the HC */ + +static void end_unlink_async(struct ehci_hcd *ehci) +{ + struct ehci_qh *qh; if (ehci->has_synopsys_hc_bug) ehci_writel(ehci, (u32) ehci->async->qh_dma, &ehci->regs->async_next); -} - -/* makes sure the async qh will become idle */ -/* caller must own ehci->lock */ -static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh) -{ - struct ehci_qh *prev; + /* Process the idle QHs */ + restart: + ehci->async_unlinking = true; + while (ehci->async_iaa) { + qh = ehci->async_iaa; + ehci->async_iaa = qh->unlink_next; + qh->unlink_next = NULL; + + qh->qh_state = QH_STATE_IDLE; + qh->qh_next.qh = NULL; + + qh_completions(ehci, qh); + if (!list_empty(&qh->qtd_list) && + ehci->rh_state == EHCI_RH_RUNNING) + qh_link_async(ehci, qh); + disable_async(ehci); + } + ehci->async_unlinking = false; -#ifdef DEBUG - assert_spin_locked(&ehci->lock); - if (ehci->reclaim - || (qh->qh_state != QH_STATE_LINKED - && qh->qh_state != QH_STATE_UNLINK_WAIT) - ) - BUG (); -#endif + /* Start a new IAA cycle if any QHs are waiting for it */ + if (ehci->async_unlink) { + start_iaa_cycle(ehci, true); + if (unlikely(ehci->rh_state < EHCI_RH_RUNNING)) + goto restart; + } +} - /* stop async schedule right now? */ - if (unlikely (qh == ehci->async)) { - /* can't get here without STS_ASS set */ - if (ehci->rh_state != EHCI_RH_HALTED - && !ehci->reclaim) { - /* ... and CMD_IAAD clear */ - ehci->command &= ~CMD_ASE; - ehci_writel(ehci, ehci->command, &ehci->regs->command); - wmb (); - // handshake later, if we need to - timer_action_done (ehci, TIMER_ASYNC_OFF); +static void unlink_empty_async(struct ehci_hcd *ehci) +{ + struct ehci_qh *qh, *next; + bool stopped = (ehci->rh_state < EHCI_RH_RUNNING); + bool check_unlinks_later = false; + + /* Unlink all the async QHs that have been empty for a timer cycle */ + next = ehci->async->qh_next.qh; + while (next) { + qh = next; + next = qh->qh_next.qh; + + if (list_empty(&qh->qtd_list) && + qh->qh_state == QH_STATE_LINKED) { + if (!stopped && qh->unlink_cycle == + ehci->async_unlink_cycle) + check_unlinks_later = true; + else + single_unlink_async(ehci, qh); } - return; } - qh->qh_state = QH_STATE_UNLINK; - ehci->reclaim = qh = qh_get (qh); + /* Start a new IAA cycle if any QHs are waiting for it */ + if (ehci->async_unlink) + start_iaa_cycle(ehci, false); - prev = ehci->async; - while (prev->qh_next.qh != qh) - prev = prev->qh_next.qh; + /* QHs that haven't been empty for long enough will be handled later */ + if (check_unlinks_later) { + ehci_enable_event(ehci, EHCI_HRTIMER_ASYNC_UNLINKS, true); + ++ehci->async_unlink_cycle; + } +} - prev->hw->hw_next = qh->hw->hw_next; - prev->qh_next = qh->qh_next; - if (ehci->qh_scan_next == qh) - ehci->qh_scan_next = qh->qh_next.qh; - wmb (); +/* makes sure the async qh will become idle */ +/* caller must own ehci->lock */ - /* If the controller isn't running, we don't have to wait for it */ - if (unlikely(ehci->rh_state != EHCI_RH_RUNNING)) { - /* if (unlikely (qh->reclaim != 0)) - * this will recurse, probably not much - */ - end_unlink_async (ehci); +static void start_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh) +{ + /* + * If the QH isn't linked then there's nothing we can do + * unless we were called during a giveback, in which case + * qh_completions() has to deal with it. + */ + if (qh->qh_state != QH_STATE_LINKED) { + if (qh->qh_state == QH_STATE_COMPLETING) + qh->needs_rescan = 1; return; } - ehci_writel(ehci, ehci->command | CMD_IAAD, &ehci->regs->command); - (void)ehci_readl(ehci, &ehci->regs->command); - iaa_watchdog_start(ehci); + single_unlink_async(ehci, qh); + start_iaa_cycle(ehci, false); } /*-------------------------------------------------------------------------*/ static void scan_async (struct ehci_hcd *ehci) { - bool stopped; struct ehci_qh *qh; - enum ehci_timer_action action = TIMER_IO_WATCHDOG; - - timer_action_done (ehci, TIMER_ASYNC_SHRINK); - stopped = (ehci->rh_state != EHCI_RH_RUNNING); + bool check_unlinks_later = false; ehci->qh_scan_next = ehci->async->qh_next.qh; while (ehci->qh_scan_next) { @@ -1281,33 +1327,30 @@ static void scan_async (struct ehci_hcd *ehci) * drops the lock. That's why ehci->qh_scan_next * always holds the next qh to scan; if the next qh * gets unlinked then ehci->qh_scan_next is adjusted - * in start_unlink_async(). + * in single_unlink_async(). */ - qh = qh_get(qh); temp = qh_completions(ehci, qh); - if (qh->needs_rescan) - unlink_async(ehci, qh); - qh->unlink_time = jiffies + EHCI_SHRINK_JIFFIES; - qh_put(qh); - if (temp != 0) + if (qh->needs_rescan) { + start_unlink_async(ehci, qh); + } else if (list_empty(&qh->qtd_list) + && qh->qh_state == QH_STATE_LINKED) { + qh->unlink_cycle = ehci->async_unlink_cycle; + check_unlinks_later = true; + } else if (temp != 0) goto rescan; } + } - /* unlink idle entries, reducing DMA usage as well - * as HCD schedule-scanning costs. delay for any qh - * we just scanned, there's a not-unusual case that it - * doesn't stay idle for long. - * (plus, avoids some kind of re-activation race.) - */ - if (list_empty(&qh->qtd_list) - && qh->qh_state == QH_STATE_LINKED) { - if (!ehci->reclaim && (stopped || - time_after_eq(jiffies, qh->unlink_time))) - start_unlink_async(ehci, qh); - else - action = TIMER_ASYNC_SHRINK; - } + /* + * Unlink empty entries, reducing DMA usage as well + * as HCD schedule-scanning costs. Delay for any qh + * we just scanned, there's a not-unusual case that it + * doesn't stay idle for long. + */ + if (check_unlinks_later && ehci->rh_state == EHCI_RH_RUNNING && + !(ehci->enabled_hrtimer_events & + BIT(EHCI_HRTIMER_ASYNC_UNLINKS))) { + ehci_enable_event(ehci, EHCI_HRTIMER_ASYNC_UNLINKS, true); + ++ehci->async_unlink_cycle; } - if (action == TIMER_ASYNC_SHRINK) - timer_action (ehci, TIMER_ASYNC_SHRINK); } diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index c474cec064e4..9d8f1dd57cb3 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -13,7 +13,9 @@ */ #include <linux/clk.h> +#include <linux/of.h> #include <linux/platform_device.h> +#include <linux/of_gpio.h> #include <plat/ehci.h> #include <plat/usb-phy.h> @@ -40,7 +42,7 @@ static const struct hc_driver s5p_ehci_hc_driver = { .irq = ehci_irq, .flags = HCD_MEMORY | HCD_USB2, - .reset = ehci_init, + .reset = ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, @@ -63,6 +65,26 @@ static const struct hc_driver s5p_ehci_hc_driver = { .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; +static void s5p_setup_vbus_gpio(struct platform_device *pdev) +{ + int err; + int gpio; + + if (!pdev->dev.of_node) + return; + + gpio = of_get_named_gpio(pdev->dev.of_node, + "samsung,vbus-gpio", 0); + if (!gpio_is_valid(gpio)) + return; + + err = gpio_request_one(gpio, GPIOF_OUT_INIT_HIGH, "ehci_vbus_gpio"); + if (err) + dev_err(&pdev->dev, "can't request ehci vbus gpio %d", gpio); +} + +static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32); + static int __devinit s5p_ehci_probe(struct platform_device *pdev) { struct s5p_ehci_platdata *pdata; @@ -79,7 +101,20 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev) return -EINVAL; } - s5p_ehci = kzalloc(sizeof(struct s5p_ehci_hcd), GFP_KERNEL); + /* + * Right now device-tree probed devices don't get dma_mask set. + * Since shared usb code relies on it, set it here for now. + * Once we move to full device tree support this will vanish off. + */ + if (!pdev->dev.dma_mask) + pdev->dev.dma_mask = &ehci_s5p_dma_mask; + if (!pdev->dev.coherent_dma_mask) + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + + s5p_setup_vbus_gpio(pdev); + + s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd), + GFP_KERNEL); if (!s5p_ehci) return -ENOMEM; @@ -89,8 +124,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev) dev_name(&pdev->dev)); if (!hcd) { dev_err(&pdev->dev, "Unable to create HCD\n"); - err = -ENOMEM; - goto fail_hcd; + return -ENOMEM; } s5p_ehci->hcd = hcd; @@ -115,7 +149,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev) hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); - hcd->regs = ioremap(res->start, resource_size(res)); + hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len); if (!hcd->regs) { dev_err(&pdev->dev, "Failed to remap I/O memory\n"); err = -ENOMEM; @@ -126,7 +160,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev) if (!irq) { dev_err(&pdev->dev, "Failed to get IRQ\n"); err = -ENODEV; - goto fail; + goto fail_io; } if (pdata->phy_init) @@ -134,40 +168,26 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev) ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase)); /* DMA burst Enable */ writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs)); - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = readl(&ehci->caps->hcs_params); - - ehci_reset(ehci); - err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) { dev_err(&pdev->dev, "Failed to add USB HCD\n"); - goto fail; + goto fail_io; } platform_set_drvdata(pdev, s5p_ehci); return 0; -fail: - iounmap(hcd->regs); fail_io: clk_disable(s5p_ehci->clk); fail_clken: clk_put(s5p_ehci->clk); fail_clk: usb_put_hcd(hcd); -fail_hcd: - kfree(s5p_ehci); return err; } @@ -182,13 +202,10 @@ static int __devexit s5p_ehci_remove(struct platform_device *pdev) if (pdata && pdata->phy_exit) pdata->phy_exit(pdev, S5P_USB_PHY_HOST); - iounmap(hcd->regs); - clk_disable(s5p_ehci->clk); clk_put(s5p_ehci->clk); usb_put_hcd(hcd); - kfree(s5p_ehci); return 0; } @@ -207,27 +224,12 @@ static int s5p_ehci_suspend(struct device *dev) { struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev); struct usb_hcd *hcd = s5p_ehci->hcd; - struct ehci_hcd *ehci = hcd_to_ehci(hcd); + bool do_wakeup = device_may_wakeup(dev); struct platform_device *pdev = to_platform_device(dev); struct s5p_ehci_platdata *pdata = pdev->dev.platform_data; - unsigned long flags; - int rc = 0; - - if (time_before(jiffies, ehci->next_statechange)) - msleep(20); - - /* - * Root hub was already suspended. Disable irq emission and - * mark HW unaccessible. The PM and USB cores make sure that - * the root hub is either suspended or stopped. - */ - ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev)); - spin_lock_irqsave(&ehci->lock, flags); - ehci_writel(ehci, 0, &ehci->regs->intr_enable); - (void)ehci_readl(ehci, &ehci->regs->intr_enable); + int rc; - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - spin_unlock_irqrestore(&ehci->lock, flags); + rc = ehci_suspend(hcd, do_wakeup); if (pdata && pdata->phy_exit) pdata->phy_exit(pdev, S5P_USB_PHY_HOST); @@ -241,7 +243,6 @@ static int s5p_ehci_resume(struct device *dev) { struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev); struct usb_hcd *hcd = s5p_ehci->hcd; - struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct platform_device *pdev = to_platform_device(dev); struct s5p_ehci_platdata *pdata = pdev->dev.platform_data; @@ -253,44 +254,7 @@ static int s5p_ehci_resume(struct device *dev) /* DMA burst Enable */ writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs)); - if (time_before(jiffies, ehci->next_statechange)) - msleep(100); - - /* Mark hardware accessible again as we are out of D3 state by now */ - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - - if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { - int mask = INTR_MASK; - - ehci_prepare_ports_for_controller_resume(ehci); - if (!hcd->self.root_hub->do_remote_wakeup) - mask &= ~STS_PCD; - ehci_writel(ehci, mask, &ehci->regs->intr_enable); - ehci_readl(ehci, &ehci->regs->intr_enable); - return 0; - } - - usb_root_hub_lost_power(hcd->self.root_hub); - - (void) ehci_halt(ehci); - (void) ehci_reset(ehci); - - /* emptying the schedule aborts any urbs */ - spin_lock_irq(&ehci->lock); - if (ehci->reclaim) - end_unlink_async(ehci); - ehci_work(ehci); - spin_unlock_irq(&ehci->lock); - - ehci_writel(ehci, ehci->command, &ehci->regs->command); - ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); - ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ - - /* here we "know" root ports should always stay powered */ - ehci_port_power(ehci, 1); - - ehci->rh_state = EHCI_RH_SUSPENDED; - + ehci_resume(hcd, false); return 0; } #else @@ -303,6 +267,14 @@ static const struct dev_pm_ops s5p_ehci_pm_ops = { .resume = s5p_ehci_resume, }; +#ifdef CONFIG_OF +static const struct of_device_id exynos_ehci_match[] = { + { .compatible = "samsung,exynos-ehci" }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_ehci_match); +#endif + static struct platform_driver s5p_ehci_driver = { .probe = s5p_ehci_probe, .remove = __devexit_p(s5p_ehci_remove), @@ -311,6 +283,7 @@ static struct platform_driver s5p_ehci_driver = { .name = "s5p-ehci", .owner = THIS_MODULE, .pm = &s5p_ehci_pm_ops, + .of_match_table = of_match_ptr(exynos_ehci_match), } }; diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index 33182c6d1ff9..7cf3da7babf0 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -479,70 +479,26 @@ static int tt_no_collision ( /*-------------------------------------------------------------------------*/ -static int enable_periodic (struct ehci_hcd *ehci) +static void enable_periodic(struct ehci_hcd *ehci) { - int status; - - if (ehci->periodic_sched++) - return 0; - - /* did clearing PSE did take effect yet? - * takes effect only at frame boundaries... - */ - status = handshake_on_error_set_halt(ehci, &ehci->regs->status, - STS_PSS, 0, 9 * 125); - if (status) { - usb_hc_died(ehci_to_hcd(ehci)); - return status; - } + if (ehci->periodic_count++) + return; - ehci->command |= CMD_PSE; - ehci_writel(ehci, ehci->command, &ehci->regs->command); - /* posted write ... PSS happens later */ + /* Stop waiting to turn off the periodic schedule */ + ehci->enabled_hrtimer_events &= ~BIT(EHCI_HRTIMER_DISABLE_PERIODIC); - /* make sure ehci_work scans these */ - ehci->next_uframe = ehci_read_frame_index(ehci) - % (ehci->periodic_size << 3); - if (unlikely(ehci->broken_periodic)) - ehci->last_periodic_enable = ktime_get_real(); - return 0; + /* Don't start the schedule until PSS is 0 */ + ehci_poll_PSS(ehci); + turn_on_io_watchdog(ehci); } -static int disable_periodic (struct ehci_hcd *ehci) +static void disable_periodic(struct ehci_hcd *ehci) { - int status; - - if (--ehci->periodic_sched) - return 0; - - if (unlikely(ehci->broken_periodic)) { - /* delay experimentally determined */ - ktime_t safe = ktime_add_us(ehci->last_periodic_enable, 1000); - ktime_t now = ktime_get_real(); - s64 delay = ktime_us_delta(safe, now); - - if (unlikely(delay > 0)) - udelay(delay); - } - - /* did setting PSE not take effect yet? - * takes effect only at frame boundaries... - */ - status = handshake_on_error_set_halt(ehci, &ehci->regs->status, - STS_PSS, STS_PSS, 9 * 125); - if (status) { - usb_hc_died(ehci_to_hcd(ehci)); - return status; - } - - ehci->command &= ~CMD_PSE; - ehci_writel(ehci, ehci->command, &ehci->regs->command); - /* posted write ... */ - - free_cached_lists(ehci); + if (--ehci->periodic_count) + return; - ehci->next_uframe = -1; - return 0; + /* Don't turn off the schedule until PSS is 1 */ + ehci_poll_PSS(ehci); } /*-------------------------------------------------------------------------*/ @@ -553,7 +509,7 @@ static int disable_periodic (struct ehci_hcd *ehci) * this just links in a qh; caller guarantees uframe masks are set right. * no FSTN support (yet; ehci 0.96+) */ -static int qh_link_periodic (struct ehci_hcd *ehci, struct ehci_qh *qh) +static void qh_link_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh) { unsigned i; unsigned period = qh->period; @@ -606,28 +562,38 @@ static int qh_link_periodic (struct ehci_hcd *ehci, struct ehci_qh *qh) } qh->qh_state = QH_STATE_LINKED; qh->xacterrs = 0; - qh_get (qh); /* update per-qh bandwidth for usbfs */ ehci_to_hcd(ehci)->self.bandwidth_allocated += qh->period ? ((qh->usecs + qh->c_usecs) / qh->period) : (qh->usecs * 8); + list_add(&qh->intr_node, &ehci->intr_qh_list); + /* maybe enable periodic schedule processing */ - return enable_periodic(ehci); + ++ehci->intr_count; + enable_periodic(ehci); } -static int qh_unlink_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh) +static void qh_unlink_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh) { unsigned i; unsigned period; - // FIXME: - // IF this isn't high speed - // and this qh is active in the current uframe - // (and overlay token SplitXstate is false?) - // THEN - // qh->hw_info1 |= cpu_to_hc32(1 << 7 /* "ignore" */); + /* + * If qh is for a low/full-speed device, simply unlinking it + * could interfere with an ongoing split transaction. To unlink + * it safely would require setting the QH_INACTIVATE bit and + * waiting at least one frame, as described in EHCI 4.12.2.5. + * + * We won't bother with any of this. Instead, we assume that the + * only reason for unlinking an interrupt QH while the current URB + * is still active is to dequeue all the URBs (flush the whole + * endpoint queue). + * + * If rebalancing the periodic schedule is ever implemented, this + * approach will no longer be valid. + */ /* high bandwidth, or otherwise part of every microframe */ if ((period = qh->period) == 0) @@ -650,18 +616,15 @@ static int qh_unlink_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh) /* qh->qh_next still "live" to HC */ qh->qh_state = QH_STATE_UNLINK; qh->qh_next.ptr = NULL; - qh_put (qh); - /* maybe turn off periodic schedule */ - return disable_periodic(ehci); + if (ehci->qh_scan_next == qh) + ehci->qh_scan_next = list_entry(qh->intr_node.next, + struct ehci_qh, intr_node); + list_del(&qh->intr_node); } -static void intr_deschedule (struct ehci_hcd *ehci, struct ehci_qh *qh) +static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) { - unsigned wait; - struct ehci_qh_hw *hw = qh->hw; - int rc; - /* If the QH isn't linked then there's nothing we can do * unless we were called during a giveback, in which case * qh_completions() has to deal with it. @@ -674,28 +637,45 @@ static void intr_deschedule (struct ehci_hcd *ehci, struct ehci_qh *qh) qh_unlink_periodic (ehci, qh); - /* simple/paranoid: always delay, expecting the HC needs to read - * qh->hw_next or finish a writeback after SPLIT/CSPLIT ... and - * expect khubd to clean up after any CSPLITs we won't issue. - * active high speed queues may need bigger delays... + /* Make sure the unlinks are visible before starting the timer */ + wmb(); + + /* + * The EHCI spec doesn't say how long it takes the controller to + * stop accessing an unlinked interrupt QH. The timer delay is + * 9 uframes; presumably that will be long enough. */ - if (list_empty (&qh->qtd_list) - || (cpu_to_hc32(ehci, QH_CMASK) - & hw->hw_info2) != 0) - wait = 2; + qh->unlink_cycle = ehci->intr_unlink_cycle; + + /* New entries go at the end of the intr_unlink list */ + if (ehci->intr_unlink) + ehci->intr_unlink_last->unlink_next = qh; else - wait = 55; /* worst case: 3 * 1024 */ + ehci->intr_unlink = qh; + ehci->intr_unlink_last = qh; + + if (ehci->intr_unlinking) + ; /* Avoid recursive calls */ + else if (ehci->rh_state < EHCI_RH_RUNNING) + ehci_handle_intr_unlinks(ehci); + else if (ehci->intr_unlink == qh) { + ehci_enable_event(ehci, EHCI_HRTIMER_UNLINK_INTR, true); + ++ehci->intr_unlink_cycle; + } +} + +static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh) +{ + struct ehci_qh_hw *hw = qh->hw; + int rc; - udelay (wait); qh->qh_state = QH_STATE_IDLE; hw->hw_next = EHCI_LIST_END(ehci); - wmb (); qh_completions(ehci, qh); /* reschedule QH iff another request is queued */ - if (!list_empty(&qh->qtd_list) && - ehci->rh_state == EHCI_RH_RUNNING) { + if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) { rc = qh_schedule(ehci, qh); /* An error here likely indicates handshake failure @@ -708,6 +688,10 @@ static void intr_deschedule (struct ehci_hcd *ehci, struct ehci_qh *qh) ehci_err(ehci, "can't reschedule qh %p, err %d\n", qh, rc); } + + /* maybe turn off periodic schedule */ + --ehci->intr_count; + disable_periodic(ehci); } /*-------------------------------------------------------------------------*/ @@ -884,7 +868,7 @@ static int qh_schedule(struct ehci_hcd *ehci, struct ehci_qh *qh) ehci_dbg (ehci, "reused qh %p schedule\n", qh); /* stuff into the periodic schedule */ - status = qh_link_periodic (ehci, qh); + qh_link_periodic(ehci, qh); done: return status; } @@ -944,6 +928,35 @@ done_not_linked: return status; } +static void scan_intr(struct ehci_hcd *ehci) +{ + struct ehci_qh *qh; + + list_for_each_entry_safe(qh, ehci->qh_scan_next, &ehci->intr_qh_list, + intr_node) { + rescan: + /* clean any finished work for this qh */ + if (!list_empty(&qh->qtd_list)) { + int temp; + + /* + * Unlinks could happen here; completion reporting + * drops the lock. That's why ehci->qh_scan_next + * always holds the next qh to scan; if the next qh + * gets unlinked then ehci->qh_scan_next is adjusted + * in qh_unlink_periodic(). + */ + temp = qh_completions(ehci, qh); + if (unlikely(qh->needs_rescan || + (list_empty(&qh->qtd_list) && + qh->qh_state == QH_STATE_LINKED))) + start_unlink_intr(ehci, qh); + else if (temp != 0) + goto rescan; + } + } +} + /*-------------------------------------------------------------------------*/ /* ehci_iso_stream ops work with both ITD and SITD */ @@ -958,7 +971,6 @@ iso_stream_alloc (gfp_t mem_flags) INIT_LIST_HEAD(&stream->td_list); INIT_LIST_HEAD(&stream->free_list); stream->next_uframe = -1; - stream->refcount = 1; } return stream; } @@ -1058,57 +1070,6 @@ iso_stream_init ( stream->maxp = maxp; } -static void -iso_stream_put(struct ehci_hcd *ehci, struct ehci_iso_stream *stream) -{ - stream->refcount--; - - /* free whenever just a dev->ep reference remains. - * not like a QH -- no persistent state (toggle, halt) - */ - if (stream->refcount == 1) { - // BUG_ON (!list_empty(&stream->td_list)); - - while (!list_empty (&stream->free_list)) { - struct list_head *entry; - - entry = stream->free_list.next; - list_del (entry); - - /* knows about ITD vs SITD */ - if (stream->highspeed) { - struct ehci_itd *itd; - - itd = list_entry (entry, struct ehci_itd, - itd_list); - dma_pool_free (ehci->itd_pool, itd, - itd->itd_dma); - } else { - struct ehci_sitd *sitd; - - sitd = list_entry (entry, struct ehci_sitd, - sitd_list); - dma_pool_free (ehci->sitd_pool, sitd, - sitd->sitd_dma); - } - } - - stream->bEndpointAddress &= 0x0f; - if (stream->ep) - stream->ep->hcpriv = NULL; - - kfree(stream); - } -} - -static inline struct ehci_iso_stream * -iso_stream_get (struct ehci_iso_stream *stream) -{ - if (likely (stream != NULL)) - stream->refcount++; - return stream; -} - static struct ehci_iso_stream * iso_stream_find (struct ehci_hcd *ehci, struct urb *urb) { @@ -1129,7 +1090,6 @@ iso_stream_find (struct ehci_hcd *ehci, struct urb *urb) if (unlikely (stream == NULL)) { stream = iso_stream_alloc(GFP_ATOMIC); if (likely (stream != NULL)) { - /* dev->ep owns the initial refcount */ ep->hcpriv = stream; stream->ep = ep; iso_stream_init(ehci, stream, urb->dev, urb->pipe, @@ -1144,9 +1104,6 @@ iso_stream_find (struct ehci_hcd *ehci, struct urb *urb) stream = NULL; } - /* caller guarantees an eventual matching iso_stream_put */ - stream = iso_stream_get (stream); - spin_unlock_irqrestore (&ehci->lock, flags); return stream; } @@ -1254,17 +1211,19 @@ itd_urb_transaction ( spin_lock_irqsave (&ehci->lock, flags); for (i = 0; i < num_itds; i++) { - /* free_list.next might be cache-hot ... but maybe - * the HC caches it too. avoid that issue for now. + /* + * Use iTDs from the free list, but not iTDs that may + * still be in use by the hardware. */ - - /* prefer previously-allocated itds */ - if (likely (!list_empty(&stream->free_list))) { - itd = list_entry (stream->free_list.prev, + if (likely(!list_empty(&stream->free_list))) { + itd = list_first_entry(&stream->free_list, struct ehci_itd, itd_list); + if (itd->frame == ehci->now_frame) + goto alloc_itd; list_del (&itd->itd_list); itd_dma = itd->itd_dma; } else { + alloc_itd: spin_unlock_irqrestore (&ehci->lock, flags); itd = dma_pool_alloc (ehci->itd_pool, mem_flags, &itd_dma); @@ -1528,6 +1487,10 @@ iso_stream_schedule ( urb->start_frame = stream->next_uframe; if (!stream->highspeed) urb->start_frame >>= 3; + + /* Make sure scan_isoc() sees these */ + if (ehci->isoc_count == 0) + ehci->next_frame = now >> 3; return 0; fail: @@ -1615,8 +1578,7 @@ itd_link (struct ehci_hcd *ehci, unsigned frame, struct ehci_itd *itd) } /* fit urb's itds into the selected schedule slot; activate as needed */ -static int -itd_link_urb ( +static void itd_link_urb( struct ehci_hcd *ehci, struct urb *urb, unsigned mod, @@ -1659,7 +1621,7 @@ itd_link_urb ( itd = list_entry (iso_sched->td_list.next, struct ehci_itd, itd_list); list_move_tail (&itd->itd_list, &stream->td_list); - itd->stream = iso_stream_get (stream); + itd->stream = stream; itd->urb = urb; itd_init (ehci, stream, itd); } @@ -1686,8 +1648,8 @@ itd_link_urb ( iso_sched_free (stream, iso_sched); urb->hcpriv = NULL; - timer_action (ehci, TIMER_IO_WATCHDOG); - return enable_periodic(ehci); + ++ehci->isoc_count; + enable_periodic(ehci); } #define ISO_ERRS (EHCI_ISOC_BUF_ERR | EHCI_ISOC_BABBLE | EHCI_ISOC_XACTERR) @@ -1702,11 +1664,8 @@ itd_link_urb ( * (b) only this endpoint's completions submit URBs. It seems some silicon * corrupts things if you reuse completed descriptors very quickly... */ -static unsigned -itd_complete ( - struct ehci_hcd *ehci, - struct ehci_itd *itd -) { +static bool itd_complete(struct ehci_hcd *ehci, struct ehci_itd *itd) +{ struct urb *urb = itd->urb; struct usb_iso_packet_descriptor *desc; u32 t; @@ -1714,7 +1673,7 @@ itd_complete ( int urb_index = -1; struct ehci_iso_stream *stream = itd->stream; struct usb_device *dev; - unsigned retval = false; + bool retval = false; /* for each uframe with a packet */ for (uframe = 0; uframe < 8; uframe++) { @@ -1767,9 +1726,11 @@ itd_complete ( ehci_urb_done(ehci, urb, 0); retval = true; urb = NULL; - (void) disable_periodic(ehci); - ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; + --ehci->isoc_count; + disable_periodic(ehci); + + ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { if (ehci->amd_pll_fix == 1) usb_amd_quirk_pll_enable(); @@ -1783,28 +1744,20 @@ itd_complete ( dev->devpath, stream->bEndpointAddress & 0x0f, (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out"); } - iso_stream_put (ehci, stream); done: itd->urb = NULL; - if (ehci->clock_frame != itd->frame || itd->index[7] != -1) { - /* OK to recycle this ITD now. */ - itd->stream = NULL; - list_move(&itd->itd_list, &stream->free_list); - iso_stream_put(ehci, stream); - } else { - /* HW might remember this ITD, so we can't recycle it yet. - * Move it to a safe place until a new frame starts. - */ - list_move(&itd->itd_list, &ehci->cached_itd_list); - if (stream->refcount == 2) { - /* If iso_stream_put() were called here, stream - * would be freed. Instead, just prevent reuse. - */ - stream->ep->hcpriv = NULL; - stream->ep = NULL; - } + + /* Add to the end of the free list for later reuse */ + list_move_tail(&itd->itd_list, &stream->free_list); + + /* Recycle the iTDs when the pipeline is empty (ep no longer in use) */ + if (list_empty(&stream->td_list)) { + list_splice_tail_init(&stream->free_list, + &ehci->cached_itd_list); + start_free_itds(ehci); } + return retval; } @@ -1861,12 +1814,9 @@ static int itd_submit (struct ehci_hcd *ehci, struct urb *urb, itd_link_urb (ehci, urb, ehci->periodic_size << 3, stream); else usb_hcd_unlink_urb_from_ep(ehci_to_hcd(ehci), urb); -done_not_linked: + done_not_linked: spin_unlock_irqrestore (&ehci->lock, flags); - -done: - if (unlikely (status < 0)) - iso_stream_put (ehci, stream); + done: return status; } @@ -1955,17 +1905,19 @@ sitd_urb_transaction ( * means we never need two sitds for full speed packets. */ - /* free_list.next might be cache-hot ... but maybe - * the HC caches it too. avoid that issue for now. + /* + * Use siTDs from the free list, but not siTDs that may + * still be in use by the hardware. */ - - /* prefer previously-allocated sitds */ - if (!list_empty(&stream->free_list)) { - sitd = list_entry (stream->free_list.prev, + if (likely(!list_empty(&stream->free_list))) { + sitd = list_first_entry(&stream->free_list, struct ehci_sitd, sitd_list); + if (sitd->frame == ehci->now_frame) + goto alloc_sitd; list_del (&sitd->sitd_list); sitd_dma = sitd->sitd_dma; } else { + alloc_sitd: spin_unlock_irqrestore (&ehci->lock, flags); sitd = dma_pool_alloc (ehci->sitd_pool, mem_flags, &sitd_dma); @@ -2034,8 +1986,7 @@ sitd_link (struct ehci_hcd *ehci, unsigned frame, struct ehci_sitd *sitd) } /* fit urb's sitds into the selected schedule slot; activate as needed */ -static int -sitd_link_urb ( +static void sitd_link_urb( struct ehci_hcd *ehci, struct urb *urb, unsigned mod, @@ -2081,7 +2032,7 @@ sitd_link_urb ( sitd = list_entry (sched->td_list.next, struct ehci_sitd, sitd_list); list_move_tail (&sitd->sitd_list, &stream->td_list); - sitd->stream = iso_stream_get (stream); + sitd->stream = stream; sitd->urb = urb; sitd_patch(ehci, stream, sitd, sched, packet); @@ -2096,8 +2047,8 @@ sitd_link_urb ( iso_sched_free (stream, sched); urb->hcpriv = NULL; - timer_action (ehci, TIMER_IO_WATCHDOG); - return enable_periodic(ehci); + ++ehci->isoc_count; + enable_periodic(ehci); } /*-------------------------------------------------------------------------*/ @@ -2115,18 +2066,15 @@ sitd_link_urb ( * (b) only this endpoint's completions submit URBs. It seems some silicon * corrupts things if you reuse completed descriptors very quickly... */ -static unsigned -sitd_complete ( - struct ehci_hcd *ehci, - struct ehci_sitd *sitd -) { +static bool sitd_complete(struct ehci_hcd *ehci, struct ehci_sitd *sitd) +{ struct urb *urb = sitd->urb; struct usb_iso_packet_descriptor *desc; u32 t; int urb_index = -1; struct ehci_iso_stream *stream = sitd->stream; struct usb_device *dev; - unsigned retval = false; + bool retval = false; urb_index = sitd->index; desc = &urb->iso_frame_desc [urb_index]; @@ -2163,9 +2111,11 @@ sitd_complete ( ehci_urb_done(ehci, urb, 0); retval = true; urb = NULL; - (void) disable_periodic(ehci); - ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; + --ehci->isoc_count; + disable_periodic(ehci); + + ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { if (ehci->amd_pll_fix == 1) usb_amd_quirk_pll_enable(); @@ -2179,28 +2129,20 @@ sitd_complete ( dev->devpath, stream->bEndpointAddress & 0x0f, (stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out"); } - iso_stream_put (ehci, stream); done: sitd->urb = NULL; - if (ehci->clock_frame != sitd->frame) { - /* OK to recycle this SITD now. */ - sitd->stream = NULL; - list_move(&sitd->sitd_list, &stream->free_list); - iso_stream_put(ehci, stream); - } else { - /* HW might remember this SITD, so we can't recycle it yet. - * Move it to a safe place until a new frame starts. - */ - list_move(&sitd->sitd_list, &ehci->cached_sitd_list); - if (stream->refcount == 2) { - /* If iso_stream_put() were called here, stream - * would be freed. Instead, just prevent reuse. - */ - stream->ep->hcpriv = NULL; - stream->ep = NULL; - } + + /* Add to the end of the free list for later reuse */ + list_move_tail(&sitd->sitd_list, &stream->free_list); + + /* Recycle the siTDs when the pipeline is empty (ep no longer in use) */ + if (list_empty(&stream->td_list)) { + list_splice_tail_init(&stream->free_list, + &ehci->cached_sitd_list); + start_free_itds(ehci); } + return retval; } @@ -2254,74 +2196,39 @@ static int sitd_submit (struct ehci_hcd *ehci, struct urb *urb, sitd_link_urb (ehci, urb, ehci->periodic_size << 3, stream); else usb_hcd_unlink_urb_from_ep(ehci_to_hcd(ehci), urb); -done_not_linked: + done_not_linked: spin_unlock_irqrestore (&ehci->lock, flags); - -done: - if (status < 0) - iso_stream_put (ehci, stream); + done: return status; } /*-------------------------------------------------------------------------*/ -static void free_cached_lists(struct ehci_hcd *ehci) +static void scan_isoc(struct ehci_hcd *ehci) { - struct ehci_itd *itd, *n; - struct ehci_sitd *sitd, *sn; - - list_for_each_entry_safe(itd, n, &ehci->cached_itd_list, itd_list) { - struct ehci_iso_stream *stream = itd->stream; - itd->stream = NULL; - list_move(&itd->itd_list, &stream->free_list); - iso_stream_put(ehci, stream); - } - - list_for_each_entry_safe(sitd, sn, &ehci->cached_sitd_list, sitd_list) { - struct ehci_iso_stream *stream = sitd->stream; - sitd->stream = NULL; - list_move(&sitd->sitd_list, &stream->free_list); - iso_stream_put(ehci, stream); - } -} - -/*-------------------------------------------------------------------------*/ - -static void -scan_periodic (struct ehci_hcd *ehci) -{ - unsigned now_uframe, frame, clock, clock_frame, mod; - unsigned modified; - - mod = ehci->periodic_size << 3; + unsigned uf, now_frame, frame; + unsigned fmask = ehci->periodic_size - 1; + bool modified, live; /* * When running, scan from last scan point up to "now" * else clean up by scanning everything that's left. * Touches as few pages as possible: cache-friendly. */ - now_uframe = ehci->next_uframe; - if (ehci->rh_state == EHCI_RH_RUNNING) { - clock = ehci_read_frame_index(ehci); - clock_frame = (clock >> 3) & (ehci->periodic_size - 1); + if (ehci->rh_state >= EHCI_RH_RUNNING) { + uf = ehci_read_frame_index(ehci); + now_frame = (uf >> 3) & fmask; + live = true; } else { - clock = now_uframe + mod - 1; - clock_frame = -1; + now_frame = (ehci->next_frame - 1) & fmask; + live = false; } - if (ehci->clock_frame != clock_frame) { - free_cached_lists(ehci); - ehci->clock_frame = clock_frame; - } - clock &= mod - 1; - clock_frame = clock >> 3; - ++ehci->periodic_stamp; + ehci->now_frame = now_frame; + frame = ehci->next_frame; for (;;) { union ehci_shadow q, *q_p; __hc32 type, *hw_p; - unsigned incomplete = false; - - frame = now_uframe >> 3; restart: /* scan each element in frame's queue for completions */ @@ -2329,48 +2236,17 @@ restart: hw_p = &ehci->periodic [frame]; q.ptr = q_p->ptr; type = Q_NEXT_TYPE(ehci, *hw_p); - modified = 0; + modified = false; while (q.ptr != NULL) { - unsigned uf; - union ehci_shadow temp; - int live; - - live = (ehci->rh_state == EHCI_RH_RUNNING); switch (hc32_to_cpu(ehci, type)) { - case Q_TYPE_QH: - /* handle any completions */ - temp.qh = qh_get (q.qh); - type = Q_NEXT_TYPE(ehci, q.qh->hw->hw_next); - q = q.qh->qh_next; - if (temp.qh->stamp != ehci->periodic_stamp) { - modified = qh_completions(ehci, temp.qh); - if (!modified) - temp.qh->stamp = ehci->periodic_stamp; - if (unlikely(list_empty(&temp.qh->qtd_list) || - temp.qh->needs_rescan)) - intr_deschedule(ehci, temp.qh); - } - qh_put (temp.qh); - break; - case Q_TYPE_FSTN: - /* for "save place" FSTNs, look at QH entries - * in the previous frame for completions. - */ - if (q.fstn->hw_prev != EHCI_LIST_END(ehci)) { - ehci_dbg(ehci, - "ignoring completions from FSTNs\n"); - } - type = Q_NEXT_TYPE(ehci, q.fstn->hw_next); - q = q.fstn->fstn_next; - break; case Q_TYPE_ITD: /* If this ITD is still active, leave it for * later processing ... check the next entry. * No need to check for activity unless the * frame is current. */ - if (frame == clock_frame && live) { + if (frame == now_frame && live) { rmb(); for (uf = 0; uf < 8; uf++) { if (q.itd->hw_transaction[uf] & @@ -2378,7 +2254,6 @@ restart: break; } if (uf < 8) { - incomplete = true; q_p = &q.itd->itd_next; hw_p = &q.itd->hw_next; type = Q_NEXT_TYPE(ehci, @@ -2410,14 +2285,12 @@ restart: * No need to check for activity unless the * frame is current. */ - if (((frame == clock_frame) || - (((frame + 1) & (ehci->periodic_size - 1)) - == clock_frame)) + if (((frame == now_frame) || + (((frame + 1) & fmask) == now_frame)) && live && (q.sitd->hw_results & SITD_ACTIVE(ehci))) { - incomplete = true; q_p = &q.sitd->sitd_next; hw_p = &q.sitd->hw_next; type = Q_NEXT_TYPE(ehci, @@ -2445,58 +2318,23 @@ restart: ehci_dbg(ehci, "corrupt type %d frame %d shadow %p\n", type, frame, q.ptr); // BUG (); + /* FALL THROUGH */ + case Q_TYPE_QH: + case Q_TYPE_FSTN: + /* End of the iTDs and siTDs */ q.ptr = NULL; + break; } /* assume completion callbacks modify the queue */ - if (unlikely (modified)) { - if (likely(ehci->periodic_sched > 0)) - goto restart; - /* short-circuit this scan */ - now_uframe = clock; - break; - } + if (unlikely(modified && ehci->isoc_count > 0)) + goto restart; } - /* If we can tell we caught up to the hardware, stop now. - * We can't advance our scan without collecting the ISO - * transfers that are still pending in this frame. - */ - if (incomplete && ehci->rh_state == EHCI_RH_RUNNING) { - ehci->next_uframe = now_uframe; + /* Stop when we have reached the current frame */ + if (frame == now_frame) break; - } - - // FIXME: this assumes we won't get lapped when - // latencies climb; that should be rare, but... - // detect it, and just go all the way around. - // FLR might help detect this case, so long as latencies - // don't exceed periodic_size msec (default 1.024 sec). - - // FIXME: likewise assumes HC doesn't halt mid-scan - - if (now_uframe == clock) { - unsigned now; - - if (ehci->rh_state != EHCI_RH_RUNNING - || ehci->periodic_sched == 0) - break; - ehci->next_uframe = now_uframe; - now = ehci_read_frame_index(ehci) & (mod - 1); - if (now_uframe == now) - break; - - /* rescan the rest of this frame, then ... */ - clock = now; - clock_frame = clock >> 3; - if (ehci->clock_frame != clock_frame) { - free_cached_lists(ehci); - ehci->clock_frame = clock_frame; - ++ehci->periodic_stamp; - } - } else { - now_uframe++; - now_uframe &= mod - 1; - } + frame = (frame + 1) & fmask; } + ehci->next_frame = now_frame; } diff --git a/drivers/usb/host/ehci-sead3.c b/drivers/usb/host/ehci-sead3.c index cc199e87a7a9..58c96bd50d22 100644 --- a/drivers/usb/host/ehci-sead3.c +++ b/drivers/usb/host/ehci-sead3.c @@ -160,84 +160,16 @@ static int ehci_hcd_sead3_drv_remove(struct platform_device *pdev) static int ehci_hcd_sead3_drv_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - unsigned long flags; - int rc = 0; - - if (time_before(jiffies, ehci->next_statechange)) - msleep(20); - - /* Root hub was already suspended. Disable irq emission and - * mark HW unaccessible. The PM and USB cores make sure that - * the root hub is either suspended or stopped. - */ - ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev)); - spin_lock_irqsave(&ehci->lock, flags); - ehci_writel(ehci, 0, &ehci->regs->intr_enable); - (void)ehci_readl(ehci, &ehci->regs->intr_enable); - - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - spin_unlock_irqrestore(&ehci->lock, flags); + bool do_wakeup = device_may_wakeup(dev); - /* could save FLADJ in case of Vaux power loss - * ... we'd only use it to handle clock skew - */ - - return rc; + return ehci_suspend(hcd, do_wakeup); } static int ehci_hcd_sead3_drv_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - - /* maybe restore FLADJ. */ - - if (time_before(jiffies, ehci->next_statechange)) - msleep(100); - - /* Mark hardware accessible again as we are out of D3 state by now */ - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - - /* If CF is still set, we maintained PCI Vaux power. - * Just undo the effect of ehci_pci_suspend(). - */ - if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { - int mask = INTR_MASK; - - ehci_prepare_ports_for_controller_resume(ehci); - if (!hcd->self.root_hub->do_remote_wakeup) - mask &= ~STS_PCD; - ehci_writel(ehci, mask, &ehci->regs->intr_enable); - ehci_readl(ehci, &ehci->regs->intr_enable); - return 0; - } - - ehci_dbg(ehci, "lost power, restarting\n"); - usb_root_hub_lost_power(hcd->self.root_hub); - - /* Else reset, to cope with power loss or flush-to-storage - * style "resume" having let BIOS kick in during reboot. - */ - (void) ehci_halt(ehci); - (void) ehci_reset(ehci); - - /* emptying the schedule aborts any urbs */ - spin_lock_irq(&ehci->lock); - if (ehci->reclaim) - end_unlink_async(ehci); - ehci_work(ehci); - spin_unlock_irq(&ehci->lock); - - ehci_writel(ehci, ehci->command, &ehci->regs->command); - ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); - ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ - - /* here we "know" root ports should always stay powered */ - ehci_port_power(ehci, 1); - - ehci->rh_state = EHCI_RH_SUSPENDED; + ehci_resume(hcd, false); return 0; } diff --git a/drivers/usb/host/ehci-sh.c b/drivers/usb/host/ehci-sh.c index e7cb3925abf8..b3f1e3650da0 100644 --- a/drivers/usb/host/ehci-sh.c +++ b/drivers/usb/host/ehci-sh.c @@ -24,25 +24,11 @@ static int ehci_sh_reset(struct usb_hcd *hcd) int ret; ehci->caps = hcd->regs; - ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci, - &ehci->caps->hc_capbase)); - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - - ret = ehci_halt(ehci); - if (unlikely(ret)) - return ret; - - ret = ehci_init(hcd); + ret = ehci_setup(hcd); if (unlikely(ret)) return ret; - ehci->sbrn = 0x20; - - ehci_reset(ehci); ehci_port_power(ehci, 0); return ret; diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c index 37ba8c8d2fd0..c718a065e154 100644 --- a/drivers/usb/host/ehci-spear.c +++ b/drivers/usb/host/ehci-spear.c @@ -41,19 +41,11 @@ static int ehci_spear_setup(struct usb_hcd *hcd) /* registers start at offset 0x0 */ ehci->caps = hcd->regs; - ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci, - &ehci->caps->hc_capbase)); - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - retval = ehci_halt(ehci); - if (retval) - return retval; - retval = ehci_init(hcd); + retval = ehci_setup(hcd); if (retval) return retval; - ehci_reset(ehci); ehci_port_power(ehci, 0); return retval; @@ -97,71 +89,16 @@ static const struct hc_driver ehci_spear_hc_driver = { static int ehci_spear_drv_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - unsigned long flags; - int rc = 0; + bool do_wakeup = device_may_wakeup(dev); - if (time_before(jiffies, ehci->next_statechange)) - msleep(10); - - /* - * Root hub was already suspended. Disable irq emission and mark HW - * unaccessible. The PM and USB cores make sure that the root hub is - * either suspended or stopped. - */ - spin_lock_irqsave(&ehci->lock, flags); - ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev)); - ehci_writel(ehci, 0, &ehci->regs->intr_enable); - ehci_readl(ehci, &ehci->regs->intr_enable); - spin_unlock_irqrestore(&ehci->lock, flags); - - return rc; + return ehci_suspend(hcd, do_wakeup); } static int ehci_spear_drv_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - - if (time_before(jiffies, ehci->next_statechange)) - msleep(100); - - if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { - int mask = INTR_MASK; - - ehci_prepare_ports_for_controller_resume(ehci); - - if (!hcd->self.root_hub->do_remote_wakeup) - mask &= ~STS_PCD; - - ehci_writel(ehci, mask, &ehci->regs->intr_enable); - ehci_readl(ehci, &ehci->regs->intr_enable); - return 0; - } - - usb_root_hub_lost_power(hcd->self.root_hub); - - /* - * Else reset, to cope with power loss or flush-to-storage style - * "resume" having let BIOS kick in during reboot. - */ - ehci_halt(ehci); - ehci_reset(ehci); - - /* emptying the schedule aborts any urbs */ - spin_lock_irq(&ehci->lock); - if (ehci->reclaim) - end_unlink_async(ehci); - - ehci_work(ehci); - spin_unlock_irq(&ehci->lock); - - ehci_writel(ehci, ehci->command, &ehci->regs->command); - ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); - ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ - /* here we "know" root ports should always stay powered */ - ehci_port_power(ehci, 1); + ehci_resume(hcd, false); return 0; } #endif /* CONFIG_PM */ diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index ab8a3bf628e3..950e95efa381 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -17,6 +17,7 @@ */ #include <linux/clk.h> +#include <linux/err.h> #include <linux/platform_device.h> #include <linux/platform_data/tegra_usb.h> #include <linux/irq.h> @@ -280,30 +281,14 @@ static int tegra_ehci_setup(struct usb_hcd *hcd) /* EHCI registers start at offset 0x100 */ ehci->caps = hcd->regs + 0x100; - ehci->regs = hcd->regs + 0x100 + - HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase)); - - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = readl(&ehci->caps->hcs_params); /* switch to host mode */ hcd->has_tt = 1; - ehci_reset(ehci); - - retval = ehci_halt(ehci); - if (retval) - return retval; - /* data structure init */ - retval = ehci_init(hcd); + retval = ehci_setup(hcd); if (retval) return retval; - ehci->sbrn = 0x20; - ehci_port_power(ehci, 1); return retval; } @@ -460,12 +445,11 @@ static int controller_suspend(struct device *dev) if (time_before(jiffies, ehci->next_statechange)) msleep(10); - spin_lock_irqsave(&ehci->lock, flags); + ehci_halt(ehci); + spin_lock_irqsave(&ehci->lock, flags); tegra->port_speed = (readl(&hw->port_status[0]) >> 26) & 0x3; - ehci_halt(ehci); clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - spin_unlock_irqrestore(&ehci->lock, flags); tegra_ehci_power_down(hcd); @@ -749,8 +733,8 @@ static int tegra_ehci_probe(struct platform_device *pdev) #ifdef CONFIG_USB_OTG_UTILS if (pdata->operating_mode == TEGRA_USB_OTG) { - tegra->transceiver = usb_get_transceiver(); - if (tegra->transceiver) + tegra->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + if (!IS_ERR_OR_NULL(tegra->transceiver)) otg_set_host(tegra->transceiver->otg, &hcd->self); } #endif @@ -773,9 +757,9 @@ static int tegra_ehci_probe(struct platform_device *pdev) fail: #ifdef CONFIG_USB_OTG_UTILS - if (tegra->transceiver) { + if (!IS_ERR_OR_NULL(tegra->transceiver)) { otg_set_host(tegra->transceiver->otg, NULL); - usb_put_transceiver(tegra->transceiver); + usb_put_phy(tegra->transceiver); } #endif tegra_usb_phy_close(tegra->phy); @@ -808,9 +792,9 @@ static int tegra_ehci_remove(struct platform_device *pdev) pm_runtime_put_noidle(&pdev->dev); #ifdef CONFIG_USB_OTG_UTILS - if (tegra->transceiver) { + if (!IS_ERR_OR_NULL(tegra->transceiver)) { otg_set_host(tegra->transceiver->otg, NULL); - usb_put_transceiver(tegra->transceiver); + usb_put_phy(tegra->transceiver); } #endif diff --git a/drivers/usb/host/ehci-timer.c b/drivers/usb/host/ehci-timer.c new file mode 100644 index 000000000000..eb896a2c8f2e --- /dev/null +++ b/drivers/usb/host/ehci-timer.c @@ -0,0 +1,401 @@ +/* + * Copyright (C) 2012 by Alan Stern + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/* This file is part of ehci-hcd.c */ + +/*-------------------------------------------------------------------------*/ + +/* Set a bit in the USBCMD register */ +static void ehci_set_command_bit(struct ehci_hcd *ehci, u32 bit) +{ + ehci->command |= bit; + ehci_writel(ehci, ehci->command, &ehci->regs->command); + + /* unblock posted write */ + ehci_readl(ehci, &ehci->regs->command); +} + +/* Clear a bit in the USBCMD register */ +static void ehci_clear_command_bit(struct ehci_hcd *ehci, u32 bit) +{ + ehci->command &= ~bit; + ehci_writel(ehci, ehci->command, &ehci->regs->command); + + /* unblock posted write */ + ehci_readl(ehci, &ehci->regs->command); +} + +/*-------------------------------------------------------------------------*/ + +/* + * EHCI timer support... Now using hrtimers. + * + * Lots of different events are triggered from ehci->hrtimer. Whenever + * the timer routine runs, it checks each possible event; events that are + * currently enabled and whose expiration time has passed get handled. + * The set of enabled events is stored as a collection of bitflags in + * ehci->enabled_hrtimer_events, and they are numbered in order of + * increasing delay values (ranging between 1 ms and 100 ms). + * + * Rather than implementing a sorted list or tree of all pending events, + * we keep track only of the lowest-numbered pending event, in + * ehci->next_hrtimer_event. Whenever ehci->hrtimer gets restarted, its + * expiration time is set to the timeout value for this event. + * + * As a result, events might not get handled right away; the actual delay + * could be anywhere up to twice the requested delay. This doesn't + * matter, because none of the events are especially time-critical. The + * ones that matter most all have a delay of 1 ms, so they will be + * handled after 2 ms at most, which is okay. In addition to this, we + * allow for an expiration range of 1 ms. + */ + +/* + * Delay lengths for the hrtimer event types. + * Keep this list sorted by delay length, in the same order as + * the event types indexed by enum ehci_hrtimer_event in ehci.h. + */ +static unsigned event_delays_ns[] = { + 1 * NSEC_PER_MSEC, /* EHCI_HRTIMER_POLL_ASS */ + 1 * NSEC_PER_MSEC, /* EHCI_HRTIMER_POLL_PSS */ + 1 * NSEC_PER_MSEC, /* EHCI_HRTIMER_POLL_DEAD */ + 1125 * NSEC_PER_USEC, /* EHCI_HRTIMER_UNLINK_INTR */ + 2 * NSEC_PER_MSEC, /* EHCI_HRTIMER_FREE_ITDS */ + 6 * NSEC_PER_MSEC, /* EHCI_HRTIMER_ASYNC_UNLINKS */ + 10 * NSEC_PER_MSEC, /* EHCI_HRTIMER_IAA_WATCHDOG */ + 10 * NSEC_PER_MSEC, /* EHCI_HRTIMER_DISABLE_PERIODIC */ + 15 * NSEC_PER_MSEC, /* EHCI_HRTIMER_DISABLE_ASYNC */ + 100 * NSEC_PER_MSEC, /* EHCI_HRTIMER_IO_WATCHDOG */ +}; + +/* Enable a pending hrtimer event */ +static void ehci_enable_event(struct ehci_hcd *ehci, unsigned event, + bool resched) +{ + ktime_t *timeout = &ehci->hr_timeouts[event]; + + if (resched) + *timeout = ktime_add(ktime_get(), + ktime_set(0, event_delays_ns[event])); + ehci->enabled_hrtimer_events |= (1 << event); + + /* Track only the lowest-numbered pending event */ + if (event < ehci->next_hrtimer_event) { + ehci->next_hrtimer_event = event; + hrtimer_start_range_ns(&ehci->hrtimer, *timeout, + NSEC_PER_MSEC, HRTIMER_MODE_ABS); + } +} + + +/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */ +static void ehci_poll_ASS(struct ehci_hcd *ehci) +{ + unsigned actual, want; + + /* Don't enable anything if the controller isn't running (e.g., died) */ + if (ehci->rh_state != EHCI_RH_RUNNING) + return; + + want = (ehci->command & CMD_ASE) ? STS_ASS : 0; + actual = ehci_readl(ehci, &ehci->regs->status) & STS_ASS; + + if (want != actual) { + + /* Poll again later, but give up after about 20 ms */ + if (ehci->ASS_poll_count++ < 20) { + ehci_enable_event(ehci, EHCI_HRTIMER_POLL_ASS, true); + return; + } + ehci_warn(ehci, "Waited too long for the async schedule status, giving up\n"); + } + ehci->ASS_poll_count = 0; + + /* The status is up-to-date; restart or stop the schedule as needed */ + if (want == 0) { /* Stopped */ + if (ehci->async_count > 0) + ehci_set_command_bit(ehci, CMD_ASE); + + } else { /* Running */ + if (ehci->async_count == 0) { + + /* Turn off the schedule after a while */ + ehci_enable_event(ehci, EHCI_HRTIMER_DISABLE_ASYNC, + true); + } + } +} + +/* Turn off the async schedule after a brief delay */ +static void ehci_disable_ASE(struct ehci_hcd *ehci) +{ + ehci_clear_command_bit(ehci, CMD_ASE); +} + + +/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */ +static void ehci_poll_PSS(struct ehci_hcd *ehci) +{ + unsigned actual, want; + + /* Don't do anything if the controller isn't running (e.g., died) */ + if (ehci->rh_state != EHCI_RH_RUNNING) + return; + + want = (ehci->command & CMD_PSE) ? STS_PSS : 0; + actual = ehci_readl(ehci, &ehci->regs->status) & STS_PSS; + + if (want != actual) { + + /* Poll again later, but give up after about 20 ms */ + if (ehci->PSS_poll_count++ < 20) { + ehci_enable_event(ehci, EHCI_HRTIMER_POLL_PSS, true); + return; + } + ehci_warn(ehci, "Waited too long for the periodic schedule status, giving up\n"); + } + ehci->PSS_poll_count = 0; + + /* The status is up-to-date; restart or stop the schedule as needed */ + if (want == 0) { /* Stopped */ + if (ehci->periodic_count > 0) + ehci_set_command_bit(ehci, CMD_PSE); + + } else { /* Running */ + if (ehci->periodic_count == 0) { + + /* Turn off the schedule after a while */ + ehci_enable_event(ehci, EHCI_HRTIMER_DISABLE_PERIODIC, + true); + } + } +} + +/* Turn off the periodic schedule after a brief delay */ +static void ehci_disable_PSE(struct ehci_hcd *ehci) +{ + ehci_clear_command_bit(ehci, CMD_PSE); +} + + +/* Poll the STS_HALT status bit; see when a dead controller stops */ +static void ehci_handle_controller_death(struct ehci_hcd *ehci) +{ + if (!(ehci_readl(ehci, &ehci->regs->status) & STS_HALT)) { + + /* Give up after a few milliseconds */ + if (ehci->died_poll_count++ < 5) { + /* Try again later */ + ehci_enable_event(ehci, EHCI_HRTIMER_POLL_DEAD, true); + return; + } + ehci_warn(ehci, "Waited too long for the controller to stop, giving up\n"); + } + + /* Clean up the mess */ + ehci->rh_state = EHCI_RH_HALTED; + ehci_writel(ehci, 0, &ehci->regs->configured_flag); + ehci_writel(ehci, 0, &ehci->regs->intr_enable); + ehci_work(ehci); + end_unlink_async(ehci); + + /* Not in process context, so don't try to reset the controller */ +} + + +/* Handle unlinked interrupt QHs once they are gone from the hardware */ +static void ehci_handle_intr_unlinks(struct ehci_hcd *ehci) +{ + bool stopped = (ehci->rh_state < EHCI_RH_RUNNING); + + /* + * Process all the QHs on the intr_unlink list that were added + * before the current unlink cycle began. The list is in + * temporal order, so stop when we reach the first entry in the + * current cycle. But if the root hub isn't running then + * process all the QHs on the list. + */ + ehci->intr_unlinking = true; + while (ehci->intr_unlink) { + struct ehci_qh *qh = ehci->intr_unlink; + + if (!stopped && qh->unlink_cycle == ehci->intr_unlink_cycle) + break; + ehci->intr_unlink = qh->unlink_next; + qh->unlink_next = NULL; + end_unlink_intr(ehci, qh); + } + + /* Handle remaining entries later */ + if (ehci->intr_unlink) { + ehci_enable_event(ehci, EHCI_HRTIMER_UNLINK_INTR, true); + ++ehci->intr_unlink_cycle; + } + ehci->intr_unlinking = false; +} + + +/* Start another free-iTDs/siTDs cycle */ +static void start_free_itds(struct ehci_hcd *ehci) +{ + if (!(ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_FREE_ITDS))) { + ehci->last_itd_to_free = list_entry( + ehci->cached_itd_list.prev, + struct ehci_itd, itd_list); + ehci->last_sitd_to_free = list_entry( + ehci->cached_sitd_list.prev, + struct ehci_sitd, sitd_list); + ehci_enable_event(ehci, EHCI_HRTIMER_FREE_ITDS, true); + } +} + +/* Wait for controller to stop using old iTDs and siTDs */ +static void end_free_itds(struct ehci_hcd *ehci) +{ + struct ehci_itd *itd, *n; + struct ehci_sitd *sitd, *sn; + + if (ehci->rh_state < EHCI_RH_RUNNING) { + ehci->last_itd_to_free = NULL; + ehci->last_sitd_to_free = NULL; + } + + list_for_each_entry_safe(itd, n, &ehci->cached_itd_list, itd_list) { + list_del(&itd->itd_list); + dma_pool_free(ehci->itd_pool, itd, itd->itd_dma); + if (itd == ehci->last_itd_to_free) + break; + } + list_for_each_entry_safe(sitd, sn, &ehci->cached_sitd_list, sitd_list) { + list_del(&sitd->sitd_list); + dma_pool_free(ehci->sitd_pool, sitd, sitd->sitd_dma); + if (sitd == ehci->last_sitd_to_free) + break; + } + + if (!list_empty(&ehci->cached_itd_list) || + !list_empty(&ehci->cached_sitd_list)) + start_free_itds(ehci); +} + + +/* Handle lost (or very late) IAA interrupts */ +static void ehci_iaa_watchdog(struct ehci_hcd *ehci) +{ + if (ehci->rh_state != EHCI_RH_RUNNING) + return; + + /* + * Lost IAA irqs wedge things badly; seen first with a vt8235. + * So we need this watchdog, but must protect it against both + * (a) SMP races against real IAA firing and retriggering, and + * (b) clean HC shutdown, when IAA watchdog was pending. + */ + if (ehci->async_iaa) { + u32 cmd, status; + + /* If we get here, IAA is *REALLY* late. It's barely + * conceivable that the system is so busy that CMD_IAAD + * is still legitimately set, so let's be sure it's + * clear before we read STS_IAA. (The HC should clear + * CMD_IAAD when it sets STS_IAA.) + */ + cmd = ehci_readl(ehci, &ehci->regs->command); + + /* + * If IAA is set here it either legitimately triggered + * after the watchdog timer expired (_way_ late, so we'll + * still count it as lost) ... or a silicon erratum: + * - VIA seems to set IAA without triggering the IRQ; + * - IAAD potentially cleared without setting IAA. + */ + status = ehci_readl(ehci, &ehci->regs->status); + if ((status & STS_IAA) || !(cmd & CMD_IAAD)) { + COUNT(ehci->stats.lost_iaa); + ehci_writel(ehci, STS_IAA, &ehci->regs->status); + } + + ehci_vdbg(ehci, "IAA watchdog: status %x cmd %x\n", + status, cmd); + end_unlink_async(ehci); + } +} + + +/* Enable the I/O watchdog, if appropriate */ +static void turn_on_io_watchdog(struct ehci_hcd *ehci) +{ + /* Not needed if the controller isn't running or it's already enabled */ + if (ehci->rh_state != EHCI_RH_RUNNING || + (ehci->enabled_hrtimer_events & + BIT(EHCI_HRTIMER_IO_WATCHDOG))) + return; + + /* + * Isochronous transfers always need the watchdog. + * For other sorts we use it only if the flag is set. + */ + if (ehci->isoc_count > 0 || (ehci->need_io_watchdog && + ehci->async_count + ehci->intr_count > 0)) + ehci_enable_event(ehci, EHCI_HRTIMER_IO_WATCHDOG, true); +} + + +/* + * Handler functions for the hrtimer event types. + * Keep this array in the same order as the event types indexed by + * enum ehci_hrtimer_event in ehci.h. + */ +static void (*event_handlers[])(struct ehci_hcd *) = { + ehci_poll_ASS, /* EHCI_HRTIMER_POLL_ASS */ + ehci_poll_PSS, /* EHCI_HRTIMER_POLL_PSS */ + ehci_handle_controller_death, /* EHCI_HRTIMER_POLL_DEAD */ + ehci_handle_intr_unlinks, /* EHCI_HRTIMER_UNLINK_INTR */ + end_free_itds, /* EHCI_HRTIMER_FREE_ITDS */ + unlink_empty_async, /* EHCI_HRTIMER_ASYNC_UNLINKS */ + ehci_iaa_watchdog, /* EHCI_HRTIMER_IAA_WATCHDOG */ + ehci_disable_PSE, /* EHCI_HRTIMER_DISABLE_PERIODIC */ + ehci_disable_ASE, /* EHCI_HRTIMER_DISABLE_ASYNC */ + ehci_work, /* EHCI_HRTIMER_IO_WATCHDOG */ +}; + +static enum hrtimer_restart ehci_hrtimer_func(struct hrtimer *t) +{ + struct ehci_hcd *ehci = container_of(t, struct ehci_hcd, hrtimer); + ktime_t now; + unsigned long events; + unsigned long flags; + unsigned e; + + spin_lock_irqsave(&ehci->lock, flags); + + events = ehci->enabled_hrtimer_events; + ehci->enabled_hrtimer_events = 0; + ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT; + + /* + * Check each pending event. If its time has expired, handle + * the event; otherwise re-enable it. + */ + now = ktime_get(); + for_each_set_bit(e, &events, EHCI_HRTIMER_NUM_EVENTS) { + if (now.tv64 >= ehci->hr_timeouts[e].tv64) + event_handlers[e](ehci); + else + ehci_enable_event(ehci, e, false); + } + + spin_unlock_irqrestore(&ehci->lock, flags); + return HRTIMER_NORESTART; +} diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c index c1eda73916cd..4d147c4e33f5 100644 --- a/drivers/usb/host/ehci-vt8500.c +++ b/drivers/usb/host/ehci-vt8500.c @@ -48,7 +48,7 @@ static const struct hc_driver vt8500_ehci_hc_driver = { /* * basic lifecycle operations */ - .reset = ehci_init, + .reset = ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, @@ -121,18 +121,6 @@ static int vt8500_ehci_drv_probe(struct platform_device *pdev) ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase)); - - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = readl(&ehci->caps->hcs_params); - - ehci_port_power(ehci, 1); - - ehci_reset(ehci); ret = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED); diff --git a/drivers/usb/host/ehci-w90x900.c b/drivers/usb/host/ehci-w90x900.c index 3d2e26cbb34c..ec598082c14b 100644 --- a/drivers/usb/host/ehci-w90x900.c +++ b/drivers/usb/host/ehci-w90x900.c @@ -71,21 +71,14 @@ static int __devinit usb_w90x900_probe(const struct hc_driver *driver, val |= ENPHY; __raw_writel(val, ehci->regs+PHY1_CTR); - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - ehci->sbrn = 0x20; - irq = platform_get_irq(pdev, 0); if (irq < 0) goto err4; - ehci_reset(ehci); - retval = usb_add_hcd(hcd, irq, IRQF_SHARED); if (retval != 0) goto err4; - ehci_writel(ehci, 1, &ehci->regs->configured_flag); - return retval; err4: iounmap(hcd->regs); @@ -120,7 +113,7 @@ static const struct hc_driver ehci_w90x900_hc_driver = { /* * basic lifecycle operations */ - .reset = ehci_init, + .reset = ehci_setup, .start = ehci_run, .stop = ehci_stop, diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c index e9713d589e30..39f24fa37ebe 100644 --- a/drivers/usb/host/ehci-xilinx-of.c +++ b/drivers/usb/host/ehci-xilinx-of.c @@ -32,30 +32,6 @@ #include <linux/of_address.h> /** - * ehci_xilinx_of_setup - Initialize the device for ehci_reset() - * @hcd: Pointer to the usb_hcd device to which the host controller bound - * - * called during probe() after chip reset completes. - */ -static int ehci_xilinx_of_setup(struct usb_hcd *hcd) -{ - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - int retval; - - retval = ehci_halt(ehci); - if (retval) - return retval; - - retval = ehci_init(hcd); - if (retval) - return retval; - - ehci->sbrn = 0x20; - - return ehci_reset(ehci); -} - -/** * ehci_xilinx_port_handed_over - hand the port out if failed to enable it * @hcd: Pointer to the usb_hcd device to which the host controller bound * @portnum:Port number to which the device is attached. @@ -107,7 +83,7 @@ static const struct hc_driver ehci_xilinx_of_hc_driver = { /* * basic lifecycle operations */ - .reset = ehci_xilinx_of_setup, + .reset = ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, @@ -219,11 +195,6 @@ static int __devinit ehci_hcd_xilinx_of_probe(struct platform_device *op) /* Debug registers are at the first 0x100 region */ ehci->caps = hcd->regs + 0x100; - ehci->regs = hcd->regs + 0x100 + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); rv = usb_add_hcd(hcd, irq, 0); if (rv == 0) diff --git a/drivers/usb/host/ehci-xls.c b/drivers/usb/host/ehci-xls.c index 72f08196f8cd..8dc6a22d90b8 100644 --- a/drivers/usb/host/ehci-xls.c +++ b/drivers/usb/host/ehci-xls.c @@ -14,30 +14,11 @@ static int ehci_xls_setup(struct usb_hcd *hcd) { - int retval; struct ehci_hcd *ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; - ehci->regs = hcd->regs + - HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); - dbg_hcs_params(ehci, "reset"); - dbg_hcc_params(ehci, "reset"); - /* cache this readonly data; minimize chip reads */ - ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); - - retval = ehci_halt(ehci); - if (retval) - return retval; - - /* data structure init */ - retval = ehci_init(hcd); - if (retval) - return retval; - - ehci_reset(ehci); - - return retval; + return ehci_setup(hcd); } int ehci_xls_probe_internal(const struct hc_driver *driver, diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 2694ed6558d2..da07d98f7d1d 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -42,7 +42,7 @@ struct ehci_stats { /* irq usage */ unsigned long normal; unsigned long error; - unsigned long reclaim; + unsigned long iaa; unsigned long lost_iaa; /* termination of urbs from core */ @@ -51,7 +51,7 @@ struct ehci_stats { }; /* ehci_hcd->lock guards shared data against other CPUs: - * ehci_hcd: async, reclaim, periodic (and shadow), ... + * ehci_hcd: async, unlink, periodic (and shadow), ... * usb_host_endpoint: hcpriv * ehci_qh: qh_next, qtd_list * ehci_qtd: qtd_list @@ -62,13 +62,48 @@ struct ehci_stats { #define EHCI_MAX_ROOT_PORTS 15 /* see HCS_N_PORTS */ +/* + * ehci_rh_state values of EHCI_RH_RUNNING or above mean that the + * controller may be doing DMA. Lower values mean there's no DMA. + */ enum ehci_rh_state { EHCI_RH_HALTED, EHCI_RH_SUSPENDED, - EHCI_RH_RUNNING + EHCI_RH_RUNNING, + EHCI_RH_STOPPING }; +/* + * Timer events, ordered by increasing delay length. + * Always update event_delays_ns[] and event_handlers[] (defined in + * ehci-timer.c) in parallel with this list. + */ +enum ehci_hrtimer_event { + EHCI_HRTIMER_POLL_ASS, /* Poll for async schedule off */ + EHCI_HRTIMER_POLL_PSS, /* Poll for periodic schedule off */ + EHCI_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */ + EHCI_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */ + EHCI_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */ + EHCI_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */ + EHCI_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */ + EHCI_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */ + EHCI_HRTIMER_DISABLE_ASYNC, /* Wait to disable async sched */ + EHCI_HRTIMER_IO_WATCHDOG, /* Check for missing IRQs */ + EHCI_HRTIMER_NUM_EVENTS /* Must come last */ +}; +#define EHCI_HRTIMER_NO_EVENT 99 + struct ehci_hcd { /* one per controller */ + /* timing support */ + enum ehci_hrtimer_event next_hrtimer_event; + unsigned enabled_hrtimer_events; + ktime_t hr_timeouts[EHCI_HRTIMER_NUM_EVENTS]; + struct hrtimer hrtimer; + + int PSS_poll_count; + int ASS_poll_count; + int died_poll_count; + /* glue to PCI and HCD framework */ struct ehci_caps __iomem *caps; struct ehci_regs __iomem *regs; @@ -78,30 +113,48 @@ struct ehci_hcd { /* one per controller */ spinlock_t lock; enum ehci_rh_state rh_state; + /* general schedule support */ + bool scanning:1; + bool need_rescan:1; + bool intr_unlinking:1; + bool async_unlinking:1; + bool shutdown:1; + struct ehci_qh *qh_scan_next; + /* async schedule support */ struct ehci_qh *async; struct ehci_qh *dummy; /* For AMD quirk use */ - struct ehci_qh *reclaim; - struct ehci_qh *qh_scan_next; - unsigned scanning : 1; + struct ehci_qh *async_unlink; + struct ehci_qh *async_unlink_last; + struct ehci_qh *async_iaa; + unsigned async_unlink_cycle; + unsigned async_count; /* async activity count */ /* periodic schedule support */ #define DEFAULT_I_TDPS 1024 /* some HCs can do less */ unsigned periodic_size; __hc32 *periodic; /* hw periodic table */ dma_addr_t periodic_dma; + struct list_head intr_qh_list; unsigned i_thresh; /* uframes HC might cache */ union ehci_shadow *pshadow; /* mirror hw periodic table */ - int next_uframe; /* scan periodic, start here */ - unsigned periodic_sched; /* periodic activity count */ + struct ehci_qh *intr_unlink; + struct ehci_qh *intr_unlink_last; + unsigned intr_unlink_cycle; + unsigned now_frame; /* frame from HC hardware */ + unsigned next_frame; /* scan periodic, start here */ + unsigned intr_count; /* intr activity count */ + unsigned isoc_count; /* isoc activity count */ + unsigned periodic_count; /* periodic activity count */ unsigned uframe_periodic_max; /* max periodic time per uframe */ - /* list of itds & sitds completed while clock_frame was still active */ + /* list of itds & sitds completed while now_frame was still active */ struct list_head cached_itd_list; + struct ehci_itd *last_itd_to_free; struct list_head cached_sitd_list; - unsigned clock_frame; + struct ehci_sitd *last_sitd_to_free; /* per root hub port */ unsigned long reset_done [EHCI_MAX_ROOT_PORTS]; @@ -126,10 +179,6 @@ struct ehci_hcd { /* one per controller */ struct dma_pool *itd_pool; /* itd per iso urb */ struct dma_pool *sitd_pool; /* sitd per split iso urb */ - struct timer_list iaa_watchdog; - struct timer_list watchdog; - unsigned long actions; - unsigned periodic_stamp; unsigned random_frame; unsigned long next_statechange; ktime_t last_periodic_enable; @@ -143,7 +192,6 @@ struct ehci_hcd { /* one per controller */ unsigned big_endian_capbase:1; unsigned has_amcc_usb23:1; unsigned need_io_watchdog:1; - unsigned broken_periodic:1; unsigned amd_pll_fix:1; unsigned fs_i_thresh:1; /* Intel iso scheduling */ unsigned use_dummy_qh:1; /* AMD Frame List table quirk*/ @@ -175,10 +223,6 @@ struct ehci_hcd { /* one per controller */ #ifdef DEBUG struct dentry *debug_dir; #endif - /* - * OTG controllers and transceivers need software interaction - */ - struct usb_phy *transceiver; }; /* convert between an HCD pointer and the corresponding EHCI_HCD */ @@ -191,34 +235,6 @@ static inline struct usb_hcd *ehci_to_hcd (struct ehci_hcd *ehci) return container_of ((void *) ehci, struct usb_hcd, hcd_priv); } - -static inline void -iaa_watchdog_start(struct ehci_hcd *ehci) -{ - WARN_ON(timer_pending(&ehci->iaa_watchdog)); - mod_timer(&ehci->iaa_watchdog, - jiffies + msecs_to_jiffies(EHCI_IAA_MSECS)); -} - -static inline void iaa_watchdog_done(struct ehci_hcd *ehci) -{ - del_timer(&ehci->iaa_watchdog); -} - -enum ehci_timer_action { - TIMER_IO_WATCHDOG, - TIMER_ASYNC_SHRINK, - TIMER_ASYNC_OFF, -}; - -static inline void -timer_action_done (struct ehci_hcd *ehci, enum ehci_timer_action action) -{ - clear_bit (action, &ehci->actions); -} - -static void free_cached_lists(struct ehci_hcd *ehci); - /*-------------------------------------------------------------------------*/ #include <linux/usb/ehci_def.h> @@ -328,7 +344,13 @@ union ehci_shadow { struct ehci_qh_hw { __hc32 hw_next; /* see EHCI 3.6.1 */ __hc32 hw_info1; /* see EHCI 3.6.2 */ -#define QH_HEAD 0x00008000 +#define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */ +#define QH_HEAD (1 << 15) /* Head of async reclamation list */ +#define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */ +#define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */ +#define QH_LOW_SPEED (1 << 12) +#define QH_FULL_SPEED (0 << 12) +#define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */ __hc32 hw_info2; /* see EHCI 3.6.2 */ #define QH_SMASK 0x000000ff #define QH_CMASK 0x0000ff00 @@ -346,32 +368,23 @@ struct ehci_qh_hw { } __attribute__ ((aligned(32))); struct ehci_qh { - struct ehci_qh_hw *hw; + struct ehci_qh_hw *hw; /* Must come first */ /* the rest is HCD-private */ dma_addr_t qh_dma; /* address of qh */ union ehci_shadow qh_next; /* ptr to qh; or periodic */ struct list_head qtd_list; /* sw qtd list */ + struct list_head intr_node; /* list of intr QHs */ struct ehci_qtd *dummy; - struct ehci_qh *reclaim; /* next to reclaim */ - - struct ehci_hcd *ehci; - unsigned long unlink_time; + struct ehci_qh *unlink_next; /* next on unlink list */ - /* - * Do NOT use atomic operations for QH refcounting. On some CPUs - * (PPC7448 for example), atomic operations cannot be performed on - * memory that is cache-inhibited (i.e. being used for DMA). - * Spinlocks are used to protect all QH fields. - */ - u32 refcount; - unsigned stamp; + unsigned unlink_cycle; u8 needs_rescan; /* Dequeue during giveback */ u8 qh_state; #define QH_STATE_LINKED 1 /* HC sees this */ #define QH_STATE_UNLINK 2 /* HC may still see this */ #define QH_STATE_IDLE 3 /* HC doesn't see this */ -#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on reclaim q */ +#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on unlink q */ #define QH_STATE_COMPLETING 5 /* don't touch token.HALT */ u8 xacterrs; /* XactErr retry counter */ @@ -421,7 +434,6 @@ struct ehci_iso_stream { /* first field matches ehci_hq, but is NULL */ struct ehci_qh_hw *hw; - u32 refcount; u8 bEndpointAddress; u8 highspeed; struct list_head td_list; /* queued itds/sitds */ diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c index 6fe550049119..f238cb37305c 100644 --- a/drivers/usb/host/fhci-dbg.c +++ b/drivers/usb/host/fhci-dbg.c @@ -41,7 +41,7 @@ void fhci_dbg_isr(struct fhci_hcd *fhci, int usb_er) static int fhci_dfs_regs_show(struct seq_file *s, void *v) { struct fhci_hcd *fhci = s->private; - struct fhci_regs __iomem *regs = fhci->regs; + struct qe_usb_ctlr __iomem *regs = fhci->regs; seq_printf(s, "mode: 0x%x\n" "addr: 0x%x\n" @@ -50,11 +50,11 @@ static int fhci_dfs_regs_show(struct seq_file *s, void *v) "status: 0x%x\n" "SOF timer: %d\n" "frame number: %d\n" "lines status: 0x%x\n", - in_8(®s->usb_mod), in_8(®s->usb_addr), - in_8(®s->usb_comm), in_be16(®s->usb_ep[0]), - in_be16(®s->usb_event), in_be16(®s->usb_mask), - in_8(®s->usb_status), in_be16(®s->usb_sof_tmr), - in_be16(®s->usb_frame_num), + in_8(®s->usb_usmod), in_8(®s->usb_usadr), + in_8(®s->usb_uscom), in_be16(®s->usb_usep[0]), + in_be16(®s->usb_usber), in_be16(®s->usb_usbmr), + in_8(®s->usb_usbs), in_be16(®s->usb_ussft), + in_be16(®s->usb_usfrn), fhci_ioports_check_bus_state(fhci)); return 0; diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c index d2623747b489..7da1a26bed2e 100644 --- a/drivers/usb/host/fhci-hcd.c +++ b/drivers/usb/host/fhci-hcd.c @@ -40,8 +40,8 @@ void fhci_start_sof_timer(struct fhci_hcd *fhci) /* clear frame_n */ out_be16(&fhci->pram->frame_num, 0); - out_be16(&fhci->regs->usb_sof_tmr, 0); - setbits8(&fhci->regs->usb_mod, USB_MODE_SFTE); + out_be16(&fhci->regs->usb_ussft, 0); + setbits8(&fhci->regs->usb_usmod, USB_MODE_SFTE); fhci_dbg(fhci, "<- %s\n", __func__); } @@ -50,7 +50,7 @@ void fhci_stop_sof_timer(struct fhci_hcd *fhci) { fhci_dbg(fhci, "-> %s\n", __func__); - clrbits8(&fhci->regs->usb_mod, USB_MODE_SFTE); + clrbits8(&fhci->regs->usb_usmod, USB_MODE_SFTE); gtm_stop_timer16(fhci->timer); fhci_dbg(fhci, "<- %s\n", __func__); @@ -58,7 +58,7 @@ void fhci_stop_sof_timer(struct fhci_hcd *fhci) u16 fhci_get_sof_timer_count(struct fhci_usb *usb) { - return be16_to_cpu(in_be16(&usb->fhci->regs->usb_sof_tmr) / 12); + return be16_to_cpu(in_be16(&usb->fhci->regs->usb_ussft) / 12); } /* initialize the endpoint zero */ @@ -88,8 +88,8 @@ void fhci_usb_enable_interrupt(struct fhci_usb *usb) enable_irq(fhci_to_hcd(fhci)->irq); /* initialize the event register and mask register */ - out_be16(&usb->fhci->regs->usb_event, 0xffff); - out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); + out_be16(&usb->fhci->regs->usb_usber, 0xffff); + out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk); /* enable the timer interrupts */ enable_irq(fhci->timer->irq); @@ -109,7 +109,7 @@ void fhci_usb_disable_interrupt(struct fhci_usb *usb) /* disable the usb interrupt */ disable_irq_nosync(fhci_to_hcd(fhci)->irq); - out_be16(&usb->fhci->regs->usb_mask, 0); + out_be16(&usb->fhci->regs->usb_usbmr, 0); } usb->intr_nesting_cnt++; } @@ -119,9 +119,9 @@ static u32 fhci_usb_enable(struct fhci_hcd *fhci) { struct fhci_usb *usb = fhci->usb_lld; - out_be16(&usb->fhci->regs->usb_event, 0xffff); - out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); - setbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN); + out_be16(&usb->fhci->regs->usb_usber, 0xffff); + out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk); + setbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN); mdelay(100); @@ -141,7 +141,7 @@ static u32 fhci_usb_disable(struct fhci_hcd *fhci) usb->port_status == FHCI_PORT_LOW) fhci_device_disconnected_interrupt(fhci); - clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN); + clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN); return 0; } @@ -285,13 +285,13 @@ static int fhci_usb_init(struct fhci_hcd *fhci) USB_E_IDLE_MASK | USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK); - out_8(&usb->fhci->regs->usb_mod, USB_MODE_HOST | USB_MODE_EN); + out_8(&usb->fhci->regs->usb_usmod, USB_MODE_HOST | USB_MODE_EN); /* clearing the mask register */ - out_be16(&usb->fhci->regs->usb_mask, 0); + out_be16(&usb->fhci->regs->usb_usbmr, 0); /* initialing the event register */ - out_be16(&usb->fhci->regs->usb_event, 0xffff); + out_be16(&usb->fhci->regs->usb_usber, 0xffff); if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) { fhci_usb_free(usb); @@ -745,8 +745,8 @@ static int __devinit of_fhci_probe(struct platform_device *ofdev) } /* Clear and disable any pending interrupts. */ - out_be16(&fhci->regs->usb_event, 0xffff); - out_be16(&fhci->regs->usb_mask, 0); + out_be16(&fhci->regs->usb_usber, 0xffff); + out_be16(&fhci->regs->usb_usbmr, 0); ret = usb_add_hcd(hcd, usb_irq, 0); if (ret < 0) diff --git a/drivers/usb/host/fhci-hub.c b/drivers/usb/host/fhci-hub.c index 348fe62e94f7..6af2512f8378 100644 --- a/drivers/usb/host/fhci-hub.c +++ b/drivers/usb/host/fhci-hub.c @@ -97,7 +97,7 @@ void fhci_port_disable(struct fhci_hcd *fhci) /* Enable IDLE since we want to know if something comes along */ usb->saved_msk |= USB_E_IDLE_MASK; - out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); + out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk); /* check if during the disconnection process attached new device */ if (port_status == FHCI_PORT_WAITING) @@ -158,21 +158,21 @@ void fhci_port_reset(void *lld) fhci_stop_sof_timer(fhci); /* disable the USB controller */ - mode = in_8(&fhci->regs->usb_mod); - out_8(&fhci->regs->usb_mod, mode & (~USB_MODE_EN)); + mode = in_8(&fhci->regs->usb_usmod); + out_8(&fhci->regs->usb_usmod, mode & (~USB_MODE_EN)); /* disable idle interrupts */ - mask = in_be16(&fhci->regs->usb_mask); - out_be16(&fhci->regs->usb_mask, mask & (~USB_E_IDLE_MASK)); + mask = in_be16(&fhci->regs->usb_usbmr); + out_be16(&fhci->regs->usb_usbmr, mask & (~USB_E_IDLE_MASK)); fhci_io_port_generate_reset(fhci); /* enable interrupt on this endpoint */ - out_be16(&fhci->regs->usb_mask, mask); + out_be16(&fhci->regs->usb_usbmr, mask); /* enable the USB controller */ - mode = in_8(&fhci->regs->usb_mod); - out_8(&fhci->regs->usb_mod, mode | USB_MODE_EN); + mode = in_8(&fhci->regs->usb_usmod); + out_8(&fhci->regs->usb_usmod, mode | USB_MODE_EN); fhci_start_sof_timer(fhci); fhci_dbg(fhci, "<- %s\n", __func__); diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c index 2df851b4bc7c..2dc8a40e39d7 100644 --- a/drivers/usb/host/fhci-sched.c +++ b/drivers/usb/host/fhci-sched.c @@ -132,8 +132,8 @@ void fhci_flush_all_transmissions(struct fhci_usb *usb) u8 mode; struct td *td; - mode = in_8(&usb->fhci->regs->usb_mod); - clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN); + mode = in_8(&usb->fhci->regs->usb_usmod); + clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN); fhci_flush_bds(usb); @@ -147,9 +147,9 @@ void fhci_flush_all_transmissions(struct fhci_usb *usb) usb->actual_frame->frame_status = FRAME_END_TRANSMISSION; /* reset the event register */ - out_be16(&usb->fhci->regs->usb_event, 0xffff); + out_be16(&usb->fhci->regs->usb_usber, 0xffff); /* enable the USB controller */ - out_8(&usb->fhci->regs->usb_mod, mode | USB_MODE_EN); + out_8(&usb->fhci->regs->usb_usmod, mode | USB_MODE_EN); } /* @@ -414,7 +414,7 @@ static void sof_interrupt(struct fhci_hcd *fhci) usb->port_status = FHCI_PORT_FULL; /* Disable IDLE */ usb->saved_msk &= ~USB_E_IDLE_MASK; - out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); + out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk); } gtm_set_exact_timer16(fhci->timer, usb->max_frame_usage, false); @@ -433,14 +433,14 @@ void fhci_device_disconnected_interrupt(struct fhci_hcd *fhci) fhci_dbg(fhci, "-> %s\n", __func__); fhci_usb_disable_interrupt(usb); - clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS); + clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS); usb->port_status = FHCI_PORT_DISABLED; fhci_stop_sof_timer(fhci); /* Enable IDLE since we want to know if something comes along */ usb->saved_msk |= USB_E_IDLE_MASK; - out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); + out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk); usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_CONNECTION; usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_CONNECTION; @@ -473,7 +473,7 @@ void fhci_device_connected_interrupt(struct fhci_hcd *fhci) } usb->port_status = FHCI_PORT_LOW; - setbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS); + setbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS); usb->vroot_hub->port.wPortStatus |= (USB_PORT_STAT_LOW_SPEED | USB_PORT_STAT_CONNECTION); @@ -491,7 +491,7 @@ void fhci_device_connected_interrupt(struct fhci_hcd *fhci) } usb->port_status = FHCI_PORT_FULL; - clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_LSS); + clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS); usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_LOW_SPEED; usb->vroot_hub->port.wPortStatus |= @@ -535,7 +535,7 @@ static void abort_transmission(struct fhci_usb *usb) /* issue stop Tx command */ qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB, EP_ZERO, 0); /* flush Tx FIFOs */ - out_8(&usb->fhci->regs->usb_comm, USB_CMD_FLUSH_FIFO | EP_ZERO); + out_8(&usb->fhci->regs->usb_uscom, USB_CMD_FLUSH_FIFO | EP_ZERO); udelay(1000); /* reset Tx BDs */ fhci_flush_bds(usb); @@ -555,11 +555,11 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd) usb = fhci->usb_lld; - usb_er |= in_be16(&usb->fhci->regs->usb_event) & - in_be16(&usb->fhci->regs->usb_mask); + usb_er |= in_be16(&usb->fhci->regs->usb_usber) & + in_be16(&usb->fhci->regs->usb_usbmr); /* clear event bits for next time */ - out_be16(&usb->fhci->regs->usb_event, usb_er); + out_be16(&usb->fhci->regs->usb_usber, usb_er); fhci_dbg_isr(fhci, usb_er); @@ -573,7 +573,7 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd) /* Turn on IDLE since we want to disconnect */ usb->saved_msk |= USB_E_IDLE_MASK; - out_be16(&usb->fhci->regs->usb_event, + out_be16(&usb->fhci->regs->usb_usber, usb->saved_msk); } else if (usb->port_status == FHCI_PORT_DISABLED) { if (fhci_ioports_check_bus_state(fhci) == 1) @@ -611,7 +611,7 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd) /* XXX usb->port_status = FHCI_PORT_WAITING; */ /* Disable IDLE */ usb->saved_msk &= ~USB_E_IDLE_MASK; - out_be16(&usb->fhci->regs->usb_mask, + out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk); } else { fhci_dbg_isr(fhci, -1); diff --git a/drivers/usb/host/fhci-tds.c b/drivers/usb/host/fhci-tds.c index c5ed88199292..1498061f0aea 100644 --- a/drivers/usb/host/fhci-tds.c +++ b/drivers/usb/host/fhci-tds.c @@ -249,7 +249,7 @@ void fhci_init_ep_registers(struct fhci_usb *usb, struct endpoint *ep, u8 rt; /* set the endpoint registers according to the endpoint */ - out_be16(&usb->fhci->regs->usb_ep[0], + out_be16(&usb->fhci->regs->usb_usep[0], USB_TRANS_CTR | USB_EP_MF | USB_EP_RTE); out_be16(&usb->fhci->pram->ep_ptr[0], cpm_muram_offset(ep->ep_pram_ptr)); @@ -463,7 +463,7 @@ u32 fhci_host_transaction(struct fhci_usb *usb, cq_put(&ep->conf_frame_Q, pkt); if (cq_howmany(&ep->conf_frame_Q) == 1) - out_8(&usb->fhci->regs->usb_comm, USB_CMD_STR_FIFO); + out_8(&usb->fhci->regs->usb_uscom, USB_CMD_STR_FIFO); return 0; } @@ -535,8 +535,8 @@ void fhci_flush_actual_frame(struct fhci_usb *usb) struct endpoint *ep = usb->ep0; /* disable the USB controller */ - mode = in_8(&usb->fhci->regs->usb_mod); - out_8(&usb->fhci->regs->usb_mod, mode & ~USB_MODE_EN); + mode = in_8(&usb->fhci->regs->usb_usmod); + out_8(&usb->fhci->regs->usb_usmod, mode & ~USB_MODE_EN); tb_ptr = in_be16(&ep->ep_pram_ptr->tx_bd_ptr); td = cpm_muram_addr(tb_ptr); @@ -571,9 +571,9 @@ void fhci_flush_actual_frame(struct fhci_usb *usb) usb->actual_frame->frame_status = FRAME_TIMER_END_TRANSMISSION; /* reset the event register */ - out_be16(&usb->fhci->regs->usb_event, 0xffff); + out_be16(&usb->fhci->regs->usb_usber, 0xffff); /* enable the USB controller */ - out_8(&usb->fhci->regs->usb_mod, mode | USB_MODE_EN); + out_8(&usb->fhci->regs->usb_usmod, mode | USB_MODE_EN); } /* handles Tx confirm and Tx error interrupt */ @@ -613,7 +613,7 @@ void fhci_host_transmit_actual_frame(struct fhci_usb *usb) /* start transmit only if we have something in the TDs */ if (in_be16(&td->status) & TD_R) - out_8(&usb->fhci->regs->usb_comm, USB_CMD_STR_FIFO); + out_8(&usb->fhci->regs->usb_uscom, USB_CMD_STR_FIFO); if (in_be32(&ep->conf_td->buf_ptr) == DUMMY_BD_BUFFER) { out_be32(&old_td->buf_ptr, 0); diff --git a/drivers/usb/host/fhci.h b/drivers/usb/host/fhci.h index dc6939a44a1a..7cc1c32dc36c 100644 --- a/drivers/usb/host/fhci.h +++ b/drivers/usb/host/fhci.h @@ -28,6 +28,7 @@ #include <linux/usb.h> #include <linux/usb/hcd.h> #include <asm/qe.h> +#include <asm/immap_qe.h> #define USB_CLOCK 48000000 @@ -173,25 +174,6 @@ #define USB_E_TXB_MASK 0x0002 #define USB_E_RXB_MASK 0x0001 -/* Freescale USB Host controller registers */ -struct fhci_regs { - u8 usb_mod; /* mode register */ - u8 usb_addr; /* address register */ - u8 usb_comm; /* command register */ - u8 reserved1[1]; - __be16 usb_ep[4]; /* endpoint register */ - u8 reserved2[4]; - __be16 usb_event; /* event register */ - u8 reserved3[2]; - __be16 usb_mask; /* mask register */ - u8 reserved4[1]; - u8 usb_status; /* status register */ - __be16 usb_sof_tmr; /* Start Of Frame timer */ - u8 reserved5[2]; - __be16 usb_frame_num; /* frame number register */ - u8 reserved6[1]; -}; - /* Freescale USB HOST */ struct fhci_pram { __be16 ep_ptr[4]; /* Endpoint porter reg */ @@ -267,7 +249,7 @@ struct fhci_hcd { int gpios[NUM_GPIOS]; bool alow_gpios[NUM_GPIOS]; - struct fhci_regs __iomem *regs; /* I/O memory used to communicate */ + struct qe_usb_ctlr __iomem *regs; /* I/O memory used to communicate */ struct fhci_pram __iomem *pram; /* Parameter RAM */ struct gtm_timer *timer; diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c index ff471c1c165e..f19e2690c232 100644 --- a/drivers/usb/host/imx21-hcd.c +++ b/drivers/usb/host/imx21-hcd.c @@ -1811,7 +1811,7 @@ static int imx21_remove(struct platform_device *pdev) usb_remove_hcd(hcd); if (res != NULL) { - clk_disable(imx21->clk); + clk_disable_unprepare(imx21->clk); clk_put(imx21->clk); iounmap(imx21->regs); release_mem_region(res->start, resource_size(res)); @@ -1884,7 +1884,7 @@ static int imx21_probe(struct platform_device *pdev) ret = clk_set_rate(imx21->clk, clk_round_rate(imx21->clk, 48000000)); if (ret) goto failed_clock_set; - ret = clk_enable(imx21->clk); + ret = clk_prepare_enable(imx21->clk); if (ret) goto failed_clock_enable; @@ -1900,7 +1900,7 @@ static int imx21_probe(struct platform_device *pdev) return 0; failed_add_hcd: - clk_disable(imx21->clk); + clk_disable_unprepare(imx21->clk); failed_clock_enable: failed_clock_set: clk_put(imx21->clk); diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index 2909621ea196..fc3091bd2379 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -12,6 +12,7 @@ */ #include <linux/clk.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <mach/ohci.h> #include <plat/usb-phy.h> @@ -71,6 +72,8 @@ static const struct hc_driver exynos_ohci_hc_driver = { .start_port_reset = ohci_start_port_reset, }; +static u64 ohci_exynos_dma_mask = DMA_BIT_MASK(32); + static int __devinit exynos_ohci_probe(struct platform_device *pdev) { struct exynos4_ohci_platdata *pdata; @@ -87,7 +90,18 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev) return -EINVAL; } - exynos_ohci = kzalloc(sizeof(struct exynos_ohci_hcd), GFP_KERNEL); + /* + * Right now device-tree probed devices don't get dma_mask set. + * Since shared usb code relies on it, set it here for now. + * Once we move to full device tree support this will vanish off. + */ + if (!pdev->dev.dma_mask) + pdev->dev.dma_mask = &ohci_exynos_dma_mask; + if (!pdev->dev.coherent_dma_mask) + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + + exynos_ohci = devm_kzalloc(&pdev->dev, sizeof(struct exynos_ohci_hcd), + GFP_KERNEL); if (!exynos_ohci) return -ENOMEM; @@ -97,8 +111,7 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev) dev_name(&pdev->dev)); if (!hcd) { dev_err(&pdev->dev, "Unable to create HCD\n"); - err = -ENOMEM; - goto fail_hcd; + return -ENOMEM; } exynos_ohci->hcd = hcd; @@ -123,7 +136,7 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev) hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); - hcd->regs = ioremap(res->start, resource_size(res)); + hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len); if (!hcd->regs) { dev_err(&pdev->dev, "Failed to remap I/O memory\n"); err = -ENOMEM; @@ -134,7 +147,7 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev) if (!irq) { dev_err(&pdev->dev, "Failed to get IRQ\n"); err = -ENODEV; - goto fail; + goto fail_io; } if (pdata->phy_init) @@ -146,23 +159,19 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev) err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) { dev_err(&pdev->dev, "Failed to add USB HCD\n"); - goto fail; + goto fail_io; } platform_set_drvdata(pdev, exynos_ohci); return 0; -fail: - iounmap(hcd->regs); fail_io: clk_disable(exynos_ohci->clk); fail_clken: clk_put(exynos_ohci->clk); fail_clk: usb_put_hcd(hcd); -fail_hcd: - kfree(exynos_ohci); return err; } @@ -177,13 +186,10 @@ static int __devexit exynos_ohci_remove(struct platform_device *pdev) if (pdata && pdata->phy_exit) pdata->phy_exit(pdev, S5P_USB_PHY_HOST); - iounmap(hcd->regs); - clk_disable(exynos_ohci->clk); clk_put(exynos_ohci->clk); usb_put_hcd(hcd); - kfree(exynos_ohci); return 0; } @@ -225,6 +231,9 @@ static int exynos_ohci_suspend(struct device *dev) if (pdata && pdata->phy_exit) pdata->phy_exit(pdev, S5P_USB_PHY_HOST); + + clk_disable(exynos_ohci->clk); + fail: spin_unlock_irqrestore(&ohci->lock, flags); @@ -238,6 +247,8 @@ static int exynos_ohci_resume(struct device *dev) struct platform_device *pdev = to_platform_device(dev); struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data; + clk_enable(exynos_ohci->clk); + if (pdata && pdata->phy_init) pdata->phy_init(pdev, S5P_USB_PHY_HOST); @@ -258,6 +269,14 @@ static const struct dev_pm_ops exynos_ohci_pm_ops = { .resume = exynos_ohci_resume, }; +#ifdef CONFIG_OF +static const struct of_device_id exynos_ohci_match[] = { + { .compatible = "samsung,exynos-ohci" }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_ohci_match); +#endif + static struct platform_driver exynos_ohci_driver = { .probe = exynos_ohci_probe, .remove = __devexit_p(exynos_ohci_remove), @@ -266,6 +285,7 @@ static struct platform_driver exynos_ohci_driver = { .name = "exynos-ohci", .owner = THIS_MODULE, .pm = &exynos_ohci_pm_ops, + .of_match_table = of_match_ptr(exynos_ohci_match), } }; diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c index 1e364ec962fb..a446386bf779 100644 --- a/drivers/usb/host/ohci-nxp.c +++ b/drivers/usb/host/ohci-nxp.c @@ -43,16 +43,6 @@ #define USB_HOST_NEED_CLK_EN (1 << 21) #define PAD_CONTROL_LAST_DRIVEN (1 << 19) -#define USB_OTG_CLK_CTRL IO_ADDRESS(USB_CONFIG_BASE + 0xFF4) -#define USB_OTG_CLK_STAT IO_ADDRESS(USB_CONFIG_BASE + 0xFF8) - -/* USB_OTG_CLK_CTRL bit defines */ -#define AHB_M_CLOCK_ON (1 << 4) -#define OTG_CLOCK_ON (1 << 3) -#define I2C_CLOCK_ON (1 << 2) -#define DEV_CLOCK_ON (1 << 1) -#define HOST_CLOCK_ON (1 << 0) - #define USB_OTG_STAT_CONTROL IO_ADDRESS(USB_CONFIG_BASE + 0x110) /* USB_OTG_STAT_CONTROL bit defines */ @@ -72,7 +62,9 @@ static struct i2c_client *isp1301_i2c_client; extern int usb_disabled(void); -static struct clk *usb_clk; +static struct clk *usb_pll_clk; +static struct clk *usb_dev_clk; +static struct clk *usb_otg_clk; static void isp1301_configure_pnx4008(void) { @@ -249,8 +241,6 @@ static const struct hc_driver ohci_nxp_hc_driver = { .start_port_reset = ohci_start_port_reset, }; -#define USB_CLOCK_MASK (AHB_M_CLOCK_ON| OTG_CLOCK_ON | HOST_CLOCK_ON | I2C_CLOCK_ON) - static void nxp_set_usb_bits(void) { if (machine_is_pnx4008()) { @@ -327,41 +317,63 @@ static int __devinit usb_hcd_nxp_probe(struct platform_device *pdev) /* Enable AHB slave USB clock, needed for further USB clock control */ __raw_writel(USB_SLAVE_HCLK_EN | PAD_CONTROL_LAST_DRIVEN, USB_CTRL); - isp1301_configure(); - /* Enable USB PLL */ - usb_clk = clk_get(&pdev->dev, "ck_pll5"); - if (IS_ERR(usb_clk)) { + usb_pll_clk = clk_get(&pdev->dev, "ck_pll5"); + if (IS_ERR(usb_pll_clk)) { dev_err(&pdev->dev, "failed to acquire USB PLL\n"); - ret = PTR_ERR(usb_clk); + ret = PTR_ERR(usb_pll_clk); goto out1; } - ret = clk_enable(usb_clk); + ret = clk_enable(usb_pll_clk); if (ret < 0) { dev_err(&pdev->dev, "failed to start USB PLL\n"); goto out2; } - ret = clk_set_rate(usb_clk, 48000); + ret = clk_set_rate(usb_pll_clk, 48000); if (ret < 0) { dev_err(&pdev->dev, "failed to set USB clock rate\n"); goto out3; } + /* Enable USB device clock */ + usb_dev_clk = clk_get(&pdev->dev, "ck_usbd"); + if (IS_ERR(usb_dev_clk)) { + dev_err(&pdev->dev, "failed to acquire USB DEV Clock\n"); + ret = PTR_ERR(usb_dev_clk); + goto out4; + } + + ret = clk_enable(usb_dev_clk); + if (ret < 0) { + dev_err(&pdev->dev, "failed to start USB DEV Clock\n"); + goto out5; + } + + /* Enable USB otg clocks */ + usb_otg_clk = clk_get(&pdev->dev, "ck_usb_otg"); + if (IS_ERR(usb_otg_clk)) { + dev_err(&pdev->dev, "failed to acquire USB DEV Clock\n"); + ret = PTR_ERR(usb_dev_clk); + goto out6; + } + __raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL); - /* Set to enable all needed USB clocks */ - __raw_writel(USB_CLOCK_MASK, USB_OTG_CLK_CTRL); + ret = clk_enable(usb_otg_clk); + if (ret < 0) { + dev_err(&pdev->dev, "failed to start USB DEV Clock\n"); + goto out7; + } - while ((__raw_readl(USB_OTG_CLK_STAT) & USB_CLOCK_MASK) != - USB_CLOCK_MASK) ; + isp1301_configure(); hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { dev_err(&pdev->dev, "Failed to allocate HC buffer\n"); ret = -ENOMEM; - goto out3; + goto out8; } /* Set all USB bits in the Start Enable register */ @@ -371,14 +383,14 @@ static int __devinit usb_hcd_nxp_probe(struct platform_device *pdev) if (!res) { dev_err(&pdev->dev, "Failed to get MEM resource\n"); ret = -ENOMEM; - goto out4; + goto out8; } hcd->regs = devm_request_and_ioremap(&pdev->dev, res); if (!hcd->regs) { dev_err(&pdev->dev, "Failed to devm_request_and_ioremap\n"); ret = -ENOMEM; - goto out4; + goto out8; } hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); @@ -386,7 +398,7 @@ static int __devinit usb_hcd_nxp_probe(struct platform_device *pdev) irq = platform_get_irq(pdev, 0); if (irq < 0) { ret = -ENXIO; - goto out4; + goto out8; } nxp_start_hc(); @@ -400,13 +412,21 @@ static int __devinit usb_hcd_nxp_probe(struct platform_device *pdev) return ret; nxp_stop_hc(); -out4: +out8: nxp_unset_usb_bits(); usb_put_hcd(hcd); +out7: + clk_disable(usb_otg_clk); +out6: + clk_put(usb_otg_clk); +out5: + clk_disable(usb_dev_clk); +out4: + clk_put(usb_dev_clk); out3: - clk_disable(usb_clk); + clk_disable(usb_pll_clk); out2: - clk_put(usb_clk); + clk_put(usb_pll_clk); out1: isp1301_i2c_client = NULL; out: @@ -422,8 +442,10 @@ static int usb_hcd_nxp_remove(struct platform_device *pdev) release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); nxp_unset_usb_bits(); - clk_disable(usb_clk); - clk_put(usb_clk); + clk_disable(usb_pll_clk); + clk_put(usb_pll_clk); + clk_disable(usb_dev_clk); + clk_put(usb_dev_clk); i2c_unregister_device(isp1301_i2c_client); isp1301_i2c_client = NULL; diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index b02c344e2cc9..e7d75d295988 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -18,6 +18,7 @@ #include <linux/jiffies.h> #include <linux/platform_device.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/gpio.h> #include <asm/io.h> @@ -168,14 +169,15 @@ static int omap_1510_local_bus_init(void) static void start_hnp(struct ohci_hcd *ohci) { - const unsigned port = ohci_to_hcd(ohci)->self.otg_port - 1; + struct usb_hcd *hcd = ohci_to_hcd(ohci); + const unsigned port = hcd->self.otg_port - 1; unsigned long flags; u32 l; - otg_start_hnp(ohci->transceiver->otg); + otg_start_hnp(hcd->phy->otg); local_irq_save(flags); - ohci->transceiver->state = OTG_STATE_A_SUSPEND; + hcd->phy->state = OTG_STATE_A_SUSPEND; writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]); l = omap_readl(OTG_CTRL); l &= ~OTG_A_BUSREQ; @@ -212,18 +214,18 @@ static int ohci_omap_init(struct usb_hcd *hcd) #ifdef CONFIG_USB_OTG if (need_transceiver) { - ohci->transceiver = usb_get_transceiver(); - if (ohci->transceiver) { - int status = otg_set_host(ohci->transceiver->otg, + hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2); + if (!IS_ERR_OR_NULL(hcd->phy)) { + int status = otg_set_host(hcd->phy->otg, &ohci_to_hcd(ohci)->self); - dev_dbg(hcd->self.controller, "init %s transceiver, status %d\n", - ohci->transceiver->label, status); + dev_dbg(hcd->self.controller, "init %s phy, status %d\n", + hcd->phy->label, status); if (status) { - usb_put_transceiver(ohci->transceiver); + usb_put_phy(hcd->phy); return status; } } else { - dev_err(hcd->self.controller, "can't find transceiver\n"); + dev_err(hcd->self.controller, "can't find phy\n"); return -ENODEV; } ohci->start_hnp = start_hnp; @@ -404,9 +406,9 @@ usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev) struct ohci_hcd *ohci = hcd_to_ohci (hcd); usb_remove_hcd(hcd); - if (ohci->transceiver) { - (void) otg_set_host(ohci->transceiver->otg, 0); - usb_put_transceiver(ohci->transceiver); + if (!IS_ERR_OR_NULL(hcd->phy)) { + (void) otg_set_host(hcd->phy->otg, 0); + usb_put_phy(hcd->phy); } if (machine_is_omap_osk()) gpio_free(9); diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h index 1b19aea25a2b..d3299143d9e2 100644 --- a/drivers/usb/host/ohci.h +++ b/drivers/usb/host/ohci.h @@ -372,11 +372,6 @@ struct ohci_hcd { struct ed *ed_controltail; /* last in ctrl list */ struct ed *periodic [NUM_INTS]; /* shadow int_table */ - /* - * OTG controllers and transceivers need software interaction; - * other external transceivers should be software-transparent - */ - struct usb_phy *transceiver; void (*start_hnp)(struct ohci_hcd *ohci); /* diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 7b01094d7993..74bfc868b7ad 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -544,12 +544,18 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, if (hcd->speed != HCD_USB3) goto error; + /* Set the U1 and U2 exit latencies. */ memcpy(buf, &usb_bos_descriptor, USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE); temp = xhci_readl(xhci, &xhci->cap_regs->hcs_params3); buf[12] = HCS_U1_LATENCY(temp); put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]); + /* Indicate whether the host has LTM support. */ + temp = xhci_readl(xhci, &xhci->cap_regs->hcc_params); + if (HCC_LTC(temp)) + buf[8] |= USB_LTM_SUPPORT; + spin_unlock_irqrestore(&xhci->lock, flags); return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE; case GetPortStatus: diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index a979cd0dbe0f..7648b2d4b268 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -4450,6 +4450,8 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) /* Accept arbitrarily long scatter-gather lists */ hcd->self.sg_tablesize = ~0; + /* XHCI controllers don't stop the ep queue on short packets :| */ + hcd->self.no_stop_on_short = 1; if (usb_hcd_is_primary_hcd(hcd)) { xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL); diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c index 9f3eda91ea4d..7a95ab87ac00 100644 --- a/drivers/usb/musb/am35x.c +++ b/drivers/usb/musb/am35x.c @@ -29,6 +29,7 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/io.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> @@ -364,8 +365,8 @@ static int am35x_musb_init(struct musb *musb) return -ENODEV; usb_nop_xceiv_register(); - musb->xceiv = usb_get_transceiver(); - if (!musb->xceiv) + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(musb->xceiv)) return -ENODEV; if (is_host_enabled(musb)) @@ -406,7 +407,7 @@ static int am35x_musb_exit(struct musb *musb) if (data->set_phy_power) data->set_phy_power(0); - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); usb_nop_xceiv_unregister(); return 0; diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index a087ed6c3be9..428e6aa3e78a 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -15,6 +15,7 @@ #include <linux/list.h> #include <linux/gpio.h> #include <linux/io.h> +#include <linux/err.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/prefetch.h> @@ -415,8 +416,8 @@ static int bfin_musb_init(struct musb *musb) gpio_direction_output(musb->config->gpio_vrsel, 0); usb_nop_xceiv_register(); - musb->xceiv = usb_get_transceiver(); - if (!musb->xceiv) { + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(musb->xceiv)) { gpio_free(musb->config->gpio_vrsel); return -ENODEV; } @@ -440,7 +441,7 @@ static int bfin_musb_exit(struct musb *musb) { gpio_free(musb->config->gpio_vrsel); - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); usb_nop_xceiv_unregister(); return 0; } diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 8bd9566f3fbb..0f9fcec4e1d3 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -29,6 +29,7 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/io.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> @@ -425,8 +426,8 @@ static int da8xx_musb_init(struct musb *musb) goto fail; usb_nop_xceiv_register(); - musb->xceiv = usb_get_transceiver(); - if (!musb->xceiv) + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(musb->xceiv)) goto fail; if (is_host_enabled(musb)) @@ -458,7 +459,7 @@ static int da8xx_musb_exit(struct musb *musb) phy_off(); - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); usb_nop_xceiv_unregister(); return 0; diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c index 9d63ba4d10d6..472c8b42d38b 100644 --- a/drivers/usb/musb/davinci.c +++ b/drivers/usb/musb/davinci.c @@ -28,6 +28,7 @@ #include <linux/list.h> #include <linux/delay.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/io.h> #include <linux/gpio.h> #include <linux/platform_device.h> @@ -385,8 +386,8 @@ static int davinci_musb_init(struct musb *musb) u32 revision; usb_nop_xceiv_register(); - musb->xceiv = usb_get_transceiver(); - if (!musb->xceiv) + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(musb->xceiv)) goto unregister; musb->mregs += DAVINCI_BASE_OFFSET; @@ -444,7 +445,7 @@ static int davinci_musb_init(struct musb *musb) return 0; fail: - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); unregister: usb_nop_xceiv_unregister(); return -ENODEV; @@ -494,7 +495,7 @@ static int davinci_musb_exit(struct musb *musb) phy_off(); - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); usb_nop_xceiv_unregister(); return 0; diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index db3dff854b71..26f1befb4896 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1909,7 +1909,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) /* The musb_platform_init() call: * - adjusts musb->mregs and musb->isr if needed, * - may initialize an integrated tranceiver - * - initializes musb->xceiv, usually by otg_get_transceiver() + * - initializes musb->xceiv, usually by otg_get_phy() * - stops powering VBUS * * There are various transceiver configurations. Blackfin, diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index f4a40f001c88..dbcdeea30f09 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -327,7 +327,6 @@ struct musb { irqreturn_t (*isr)(int, void *); struct work_struct irq_work; - struct work_struct otg_notifier_work; u16 hwvers; /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */ @@ -373,7 +372,6 @@ struct musb { u16 int_tx; struct usb_phy *xceiv; - u8 xceiv_event; int nIrq; unsigned irq_wake:1; diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 23db42db761a..217808d9fbe1 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -31,6 +31,7 @@ #include <linux/init.h> #include <linux/io.h> +#include <linux/err.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/pm_runtime.h> @@ -376,8 +377,8 @@ static int dsps_musb_init(struct musb *musb) /* NOP driver needs change if supporting dual instance */ usb_nop_xceiv_register(); - musb->xceiv = usb_get_transceiver(); - if (!musb->xceiv) + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(musb->xceiv)) return -ENODEV; /* Returns zero if e.g. not clocked */ @@ -409,7 +410,7 @@ static int dsps_musb_init(struct musb *musb) return 0; err0: - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); usb_nop_xceiv_unregister(); return status; } @@ -430,7 +431,7 @@ static int dsps_musb_exit(struct musb *musb) data->set_phy_power(0); /* NOP driver needs change if supporting dual instance */ - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); usb_nop_xceiv_unregister(); return 0; diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 95918dacc99a..f7194cf65aba 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -328,6 +328,13 @@ static void txstate(struct musb *musb, struct musb_request *req) musb_ep = req->ep; + /* Check if EP is disabled */ + if (!musb_ep->desc) { + dev_dbg(musb->controller, "ep:%s disabled - ignore request\n", + musb_ep->end_point.name); + return; + } + /* we shouldn't get here while DMA is active ... but we do ... */ if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) { dev_dbg(musb->controller, "dma pending...\n"); @@ -650,6 +657,13 @@ static void rxstate(struct musb *musb, struct musb_request *req) len = musb_ep->packet_sz; + /* Check if EP is disabled */ + if (!musb_ep->desc) { + dev_dbg(musb->controller, "ep:%s disabled - ignore request\n", + musb_ep->end_point.name); + return; + } + /* We shouldn't get here while DMA is active, but we do... */ if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) { dev_dbg(musb->controller, "DMA pending...\n"); diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index e090c799d87b..4bb717d0bd41 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -1746,7 +1746,11 @@ void musb_host_rx(struct musb *musb, u8 epnum) c->channel_release(dma); hw_ep->rx_channel = NULL; dma = NULL; - /* REVISIT reset CSR */ + val = musb_readw(epio, MUSB_RXCSR); + val &= ~(MUSB_RXCSR_DMAENAB + | MUSB_RXCSR_H_AUTOREQ + | MUSB_RXCSR_AUTOCLEAR); + musb_writew(epio, MUSB_RXCSR, val); } } #endif /* Mentor DMA */ diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index c7785e81254c..5fdb9da8dd56 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -34,6 +34,7 @@ #include <linux/dma-mapping.h> #include <linux/pm_runtime.h> #include <linux/err.h> +#include <linux/usb/musb-omap.h> #include "musb_core.h" #include "omap2430.h" @@ -41,9 +42,13 @@ struct omap2430_glue { struct device *dev; struct platform_device *musb; + enum omap_musb_vbus_id_status status; + struct work_struct omap_musb_mailbox_work; }; #define glue_to_musb(g) platform_get_drvdata(g->musb) +struct omap2430_glue *_glue; + static struct timer_list musb_idle_timer; static void musb_do_idle(unsigned long _musb) @@ -223,50 +228,63 @@ static inline void omap2430_low_level_init(struct musb *musb) musb_writel(musb->mregs, OTG_FORCESTDBY, l); } -static int musb_otg_notifications(struct notifier_block *nb, - unsigned long event, void *unused) +void omap_musb_mailbox(enum omap_musb_vbus_id_status status) { - struct musb *musb = container_of(nb, struct musb, nb); + struct omap2430_glue *glue = _glue; + struct musb *musb = glue_to_musb(glue); - musb->xceiv_event = event; - schedule_work(&musb->otg_notifier_work); + glue->status = status; + if (!musb) { + dev_err(glue->dev, "musb core is not yet ready\n"); + return; + } - return NOTIFY_OK; + schedule_work(&glue->omap_musb_mailbox_work); } +EXPORT_SYMBOL_GPL(omap_musb_mailbox); -static void musb_otg_notifier_work(struct work_struct *data_notifier_work) +static void omap_musb_set_mailbox(struct omap2430_glue *glue) { - struct musb *musb = container_of(data_notifier_work, struct musb, otg_notifier_work); + struct musb *musb = glue_to_musb(glue); struct device *dev = musb->controller; struct musb_hdrc_platform_data *pdata = dev->platform_data; struct omap_musb_board_data *data = pdata->board_data; + struct usb_otg *otg = musb->xceiv->otg; - switch (musb->xceiv_event) { - case USB_EVENT_ID: - dev_dbg(musb->controller, "ID GND\n"); + switch (glue->status) { + case OMAP_MUSB_ID_GROUND: + dev_dbg(dev, "ID GND\n"); + otg->default_a = true; + musb->xceiv->state = OTG_STATE_A_IDLE; + musb->xceiv->last_event = USB_EVENT_ID; if (!is_otg_enabled(musb) || musb->gadget_driver) { - pm_runtime_get_sync(musb->controller); + pm_runtime_get_sync(dev); usb_phy_init(musb->xceiv); omap2430_musb_set_vbus(musb, 1); } break; - case USB_EVENT_VBUS: - dev_dbg(musb->controller, "VBUS Connect\n"); + case OMAP_MUSB_VBUS_VALID: + dev_dbg(dev, "VBUS Connect\n"); + otg->default_a = false; + musb->xceiv->state = OTG_STATE_B_IDLE; + musb->xceiv->last_event = USB_EVENT_VBUS; if (musb->gadget_driver) - pm_runtime_get_sync(musb->controller); + pm_runtime_get_sync(dev); usb_phy_init(musb->xceiv); break; - case USB_EVENT_NONE: - dev_dbg(musb->controller, "VBUS Disconnect\n"); + case OMAP_MUSB_ID_FLOAT: + case OMAP_MUSB_VBUS_OFF: + dev_dbg(dev, "VBUS Disconnect\n"); + musb->xceiv->last_event = USB_EVENT_NONE; if (is_otg_enabled(musb) || is_peripheral_enabled(musb)) if (musb->gadget_driver) { - pm_runtime_mark_last_busy(musb->controller); - pm_runtime_put_autosuspend(musb->controller); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); } if (data->interface_type == MUSB_INTERFACE_UTMI) { @@ -276,15 +294,24 @@ static void musb_otg_notifier_work(struct work_struct *data_notifier_work) usb_phy_shutdown(musb->xceiv); break; default: - dev_dbg(musb->controller, "ID float\n"); + dev_dbg(dev, "ID float\n"); } } + +static void omap_musb_mailbox_work(struct work_struct *mailbox_work) +{ + struct omap2430_glue *glue = container_of(mailbox_work, + struct omap2430_glue, omap_musb_mailbox_work); + omap_musb_set_mailbox(glue); +} + static int omap2430_musb_init(struct musb *musb) { u32 l; int status = 0; struct device *dev = musb->controller; + struct omap2430_glue *glue = dev_get_drvdata(dev->parent); struct musb_hdrc_platform_data *plat = dev->platform_data; struct omap_musb_board_data *data = plat->board_data; @@ -292,14 +319,12 @@ static int omap2430_musb_init(struct musb *musb) * up through ULPI. TWL4030-family PMICs include one, * which needs a driver, drivers aren't always needed. */ - musb->xceiv = usb_get_transceiver(); - if (!musb->xceiv) { + musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(musb->xceiv)) { pr_err("HS USB OTG: no transceiver configured\n"); return -ENODEV; } - INIT_WORK(&musb->otg_notifier_work, musb_otg_notifier_work); - status = pm_runtime_get_sync(dev); if (status < 0) { dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status); @@ -326,14 +351,11 @@ static int omap2430_musb_init(struct musb *musb) musb_readl(musb->mregs, OTG_INTERFSEL), musb_readl(musb->mregs, OTG_SIMENABLE)); - musb->nb.notifier_call = musb_otg_notifications; - status = usb_register_notifier(musb->xceiv, &musb->nb); - - if (status) - dev_dbg(musb->controller, "notification register failed\n"); - setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); + if (glue->status != OMAP_MUSB_UNKNOWN) + omap_musb_set_mailbox(glue); + pm_runtime_put_noidle(musb->controller); return 0; @@ -346,12 +368,13 @@ static void omap2430_musb_enable(struct musb *musb) u8 devctl; unsigned long timeout = jiffies + msecs_to_jiffies(1000); struct device *dev = musb->controller; + struct omap2430_glue *glue = dev_get_drvdata(dev->parent); struct musb_hdrc_platform_data *pdata = dev->platform_data; struct omap_musb_board_data *data = pdata->board_data; - switch (musb->xceiv->last_event) { + switch (glue->status) { - case USB_EVENT_ID: + case OMAP_MUSB_ID_GROUND: usb_phy_init(musb->xceiv); if (data->interface_type != MUSB_INTERFACE_UTMI) break; @@ -370,7 +393,7 @@ static void omap2430_musb_enable(struct musb *musb) } break; - case USB_EVENT_VBUS: + case OMAP_MUSB_VBUS_VALID: usb_phy_init(musb->xceiv); break; @@ -381,17 +404,18 @@ static void omap2430_musb_enable(struct musb *musb) static void omap2430_musb_disable(struct musb *musb) { - if (musb->xceiv->last_event) + struct device *dev = musb->controller; + struct omap2430_glue *glue = dev_get_drvdata(dev->parent); + + if (glue->status != OMAP_MUSB_UNKNOWN) usb_phy_shutdown(musb->xceiv); } static int omap2430_musb_exit(struct musb *musb) { del_timer_sync(&musb_idle_timer); - cancel_work_sync(&musb->otg_notifier_work); omap2430_low_level_exit(musb); - usb_put_transceiver(musb->xceiv); return 0; } @@ -418,7 +442,7 @@ static int __devinit omap2430_probe(struct platform_device *pdev) struct omap2430_glue *glue; int ret = -ENOMEM; - glue = kzalloc(sizeof(*glue), GFP_KERNEL); + glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); if (!glue) { dev_err(&pdev->dev, "failed to allocate glue context\n"); goto err0; @@ -427,7 +451,7 @@ static int __devinit omap2430_probe(struct platform_device *pdev) musb = platform_device_alloc("musb-hdrc", -1); if (!musb) { dev_err(&pdev->dev, "failed to allocate musb device\n"); - goto err1; + goto err0; } musb->dev.parent = &pdev->dev; @@ -436,22 +460,31 @@ static int __devinit omap2430_probe(struct platform_device *pdev) glue->dev = &pdev->dev; glue->musb = musb; + glue->status = OMAP_MUSB_UNKNOWN; pdata->platform_ops = &omap2430_ops; platform_set_drvdata(pdev, glue); + /* + * REVISIT if we ever have two instances of the wrapper, we will be + * in big trouble + */ + _glue = glue; + + INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); + ret = platform_device_add_resources(musb, pdev->resource, pdev->num_resources); if (ret) { dev_err(&pdev->dev, "failed to add resources\n"); - goto err2; + goto err1; } ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); if (ret) { dev_err(&pdev->dev, "failed to add platform_data\n"); - goto err2; + goto err1; } pm_runtime_enable(&pdev->dev); @@ -459,16 +492,13 @@ static int __devinit omap2430_probe(struct platform_device *pdev) ret = platform_device_add(musb); if (ret) { dev_err(&pdev->dev, "failed to register musb device\n"); - goto err2; + goto err1; } return 0; -err2: - platform_device_put(musb); - err1: - kfree(glue); + platform_device_put(musb); err0: return ret; @@ -478,9 +508,9 @@ static int __devexit omap2430_remove(struct platform_device *pdev) { struct omap2430_glue *glue = platform_get_drvdata(pdev); + cancel_work_sync(&glue->omap_musb_mailbox_work); platform_device_del(glue->musb); platform_device_put(glue->musb); - kfree(glue); return 0; } @@ -546,7 +576,7 @@ static int __init omap2430_init(void) { return platform_driver_register(&omap2430_driver); } -module_init(omap2430_init); +subsys_initcall(omap2430_init); static void __exit omap2430_exit(void) { diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index de1355946a83..1a1bd9cf40c5 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/init.h> #include <linux/prefetch.h> #include <linux/usb.h> @@ -1078,8 +1079,8 @@ static int tusb_musb_init(struct musb *musb) int ret; usb_nop_xceiv_register(); - musb->xceiv = usb_get_transceiver(); - if (!musb->xceiv) + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(musb->xceiv)) return -ENODEV; pdev = to_platform_device(musb->controller); @@ -1130,7 +1131,7 @@ done: if (sync) iounmap(sync); - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); usb_nop_xceiv_unregister(); } return ret; @@ -1146,7 +1147,7 @@ static int tusb_musb_exit(struct musb *musb) iounmap(musb->sync_va); - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); usb_nop_xceiv_unregister(); return 0; } diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index aa09dd417b94..a8c0fadce1b0 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -23,6 +23,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/clk.h> +#include <linux/err.h> #include <linux/io.h> #include <linux/platform_device.h> @@ -37,8 +38,8 @@ struct ux500_glue { static int ux500_musb_init(struct musb *musb) { - musb->xceiv = usb_get_transceiver(); - if (!musb->xceiv) { + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(musb->xceiv)) { pr_err("HS USB OTG: no transceiver configured\n"); return -ENODEV; } @@ -48,7 +49,7 @@ static int ux500_musb_init(struct musb *musb) static int ux500_musb_exit(struct musb *musb) { - usb_put_transceiver(musb->xceiv); + usb_put_phy(musb->xceiv); return 0; } diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig index 5c87db06b598..13fd1ddf742f 100644 --- a/drivers/usb/otg/Kconfig +++ b/drivers/usb/otg/Kconfig @@ -116,6 +116,16 @@ config FSL_USB2_OTG help Enable this to support Freescale USB OTG transceiver. +config USB_MXS_PHY + tristate "Freescale MXS USB PHY support" + depends on ARCH_MXC || ARCH_MXS + select STMP_DEVICE + select USB_OTG_UTILS + help + Enable this to support the Freescale MXS USB PHY. + + MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x. + config USB_MV_OTG tristate "Marvell USB OTG support" depends on USB_EHCI_MV && USB_MV_UDC && USB_SUSPEND diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile index 41aa5098b139..a844b8d35d14 100644 --- a/drivers/usb/otg/Makefile +++ b/drivers/usb/otg/Makefile @@ -20,4 +20,5 @@ obj-$(CONFIG_USB_MSM_OTG) += msm_otg.o obj-$(CONFIG_AB8500_USB) += ab8500-usb.o fsl_usb2_otg-objs := fsl_otg.o otg_fsm.o obj-$(CONFIG_FSL_USB2_OTG) += fsl_usb2_otg.o +obj-$(CONFIG_USB_MXS_PHY) += mxs-phy.o obj-$(CONFIG_USB_MV_OTG) += mv_otg.o diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c index a84af677dc59..ae8ad561f083 100644 --- a/drivers/usb/otg/ab8500-usb.c +++ b/drivers/usb/otg/ab8500-usb.c @@ -529,7 +529,7 @@ static int __devinit ab8500_usb_probe(struct platform_device *pdev) if (err < 0) goto fail0; - err = usb_set_transceiver(&ab->phy); + err = usb_add_phy(&ab->phy, USB_PHY_TYPE_USB2); if (err) { dev_err(&pdev->dev, "Can't register transceiver\n"); goto fail1; @@ -556,7 +556,7 @@ static int __devexit ab8500_usb_remove(struct platform_device *pdev) cancel_work_sync(&ab->phy_dis_work); - usb_set_transceiver(NULL); + usb_remove_phy(&ab->phy); ab8500_usb_host_phy_dis(ab); ab8500_usb_peri_phy_dis(ab); diff --git a/drivers/usb/otg/fsl_otg.c b/drivers/usb/otg/fsl_otg.c index be4a63e8302f..23c798cb2d7f 100644 --- a/drivers/usb/otg/fsl_otg.c +++ b/drivers/usb/otg/fsl_otg.c @@ -806,7 +806,7 @@ static int fsl_otg_conf(struct platform_device *pdev) fsl_otg_dev = fsl_otg_tc; /* Store the otg transceiver */ - status = usb_set_transceiver(&fsl_otg_tc->phy); + status = usb_add_phy(&fsl_otg_tc->phy, USB_PHY_TYPE_USB2); if (status) { pr_warn(FSL_OTG_NAME ": unable to register OTG transceiver.\n"); goto err; @@ -824,7 +824,7 @@ err: int usb_otg_start(struct platform_device *pdev) { struct fsl_otg *p_otg; - struct usb_phy *otg_trans = usb_get_transceiver(); + struct usb_phy *otg_trans = usb_get_phy(USB_PHY_TYPE_USB2); struct otg_fsm *fsm; int status; struct resource *res; @@ -1134,7 +1134,7 @@ static int __devexit fsl_otg_remove(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - usb_set_transceiver(NULL); + usb_remove_phy(&fsl_otg_dev->phy); free_irq(fsl_otg_dev->irq, fsl_otg_dev); iounmap((void *)usb_dr_regs); diff --git a/drivers/usb/otg/gpio_vbus.c b/drivers/usb/otg/gpio_vbus.c index bde6298a9693..a67ffe22179a 100644 --- a/drivers/usb/otg/gpio_vbus.c +++ b/drivers/usb/otg/gpio_vbus.c @@ -320,7 +320,7 @@ static int __init gpio_vbus_probe(struct platform_device *pdev) } /* only active when a gadget is registered */ - err = usb_set_transceiver(&gpio_vbus->phy); + err = usb_add_phy(&gpio_vbus->phy, USB_PHY_TYPE_USB2); if (err) { dev_err(&pdev->dev, "can't register transceiver, err: %d\n", err); @@ -354,7 +354,7 @@ static int __exit gpio_vbus_remove(struct platform_device *pdev) cancel_delayed_work_sync(&gpio_vbus->work); regulator_put(gpio_vbus->vbus_draw); - usb_set_transceiver(NULL); + usb_remove_phy(&gpio_vbus->phy); free_irq(gpio_vbus->irq, pdev); if (gpio_is_valid(pdata->gpio_pullup)) diff --git a/drivers/usb/otg/isp1301_omap.c b/drivers/usb/otg/isp1301_omap.c index e0558dfcfafc..575fc815c932 100644 --- a/drivers/usb/otg/isp1301_omap.c +++ b/drivers/usb/otg/isp1301_omap.c @@ -1336,9 +1336,6 @@ static int isp1301_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) { struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); -#ifndef CONFIG_USB_OTG - u32 l; -#endif if (!otg || isp != the_transceiver) return -ENODEV; @@ -1365,10 +1362,14 @@ isp1301_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) otg->gadget = gadget; // FIXME update its refcount - l = omap_readl(OTG_CTRL) & OTG_CTRL_MASK; - l &= ~(OTG_XCEIV_OUTPUTS|OTG_CTRL_BITS); - l |= OTG_ID; - omap_writel(l, OTG_CTRL); + { + u32 l; + + l = omap_readl(OTG_CTRL) & OTG_CTRL_MASK; + l &= ~(OTG_XCEIV_OUTPUTS|OTG_CTRL_BITS); + l |= OTG_ID; + omap_writel(l, OTG_CTRL); + } power_up(isp); isp->phy.state = OTG_STATE_B_IDLE; @@ -1610,7 +1611,7 @@ isp1301_probe(struct i2c_client *i2c, const struct i2c_device_id *id) dev_dbg(&i2c->dev, "scheduled timer, %d min\n", TIMER_MINUTES); #endif - status = usb_set_transceiver(&isp->phy); + status = usb_add_phy(&isp->phy, USB_PHY_TYPE_USB2); if (status < 0) dev_err(&i2c->dev, "can't register transceiver, %d\n", status); @@ -1649,7 +1650,7 @@ subsys_initcall(isp_init); static void __exit isp_exit(void) { if (the_transceiver) - usb_set_transceiver(NULL); + usb_remove_phy(&the_transceiver->phy); i2c_del_driver(&isp1301_driver); } module_exit(isp_exit); diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c index 1d0347c247d1..9f5fc906041a 100644 --- a/drivers/usb/otg/msm_otg.c +++ b/drivers/usb/otg/msm_otg.c @@ -1555,9 +1555,9 @@ static int __init msm_otg_probe(struct platform_device *pdev) phy->otg->set_host = msm_otg_set_host; phy->otg->set_peripheral = msm_otg_set_peripheral; - ret = usb_set_transceiver(&motg->phy); + ret = usb_add_phy(&motg->phy, USB_PHY_TYPE_USB2); if (ret) { - dev_err(&pdev->dev, "usb_set_transceiver failed\n"); + dev_err(&pdev->dev, "usb_add_phy failed\n"); goto free_irq; } @@ -1624,7 +1624,7 @@ static int __devexit msm_otg_remove(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 0); pm_runtime_disable(&pdev->dev); - usb_set_transceiver(NULL); + usb_remove_phy(phy); free_irq(motg->irq, motg); /* diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c index 6cc6c3ffbb83..3f124e8f5792 100644 --- a/drivers/usb/otg/mv_otg.c +++ b/drivers/usb/otg/mv_otg.c @@ -690,7 +690,7 @@ int mv_otg_remove(struct platform_device *pdev) for (clk_i = 0; clk_i <= mvotg->clknum; clk_i++) clk_put(mvotg->clk[clk_i]); - usb_set_transceiver(NULL); + usb_remove_phy(&mvotg->phy); platform_set_drvdata(pdev, NULL); kfree(mvotg->phy.otg); @@ -853,7 +853,7 @@ static int mv_otg_probe(struct platform_device *pdev) goto err_disable_clk; } - retval = usb_set_transceiver(&mvotg->phy); + retval = usb_add_phy(&mvotg->phy, USB_PHY_TYPE_USB2); if (retval < 0) { dev_err(&pdev->dev, "can't register transceiver, %d\n", retval); @@ -880,7 +880,7 @@ static int mv_otg_probe(struct platform_device *pdev) return 0; err_set_transceiver: - usb_set_transceiver(NULL); + usb_remove_phy(&mvotg->phy); err_free_irq: free_irq(mvotg->irq, mvotg); err_disable_clk: diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c new file mode 100644 index 000000000000..c1a67cb8e244 --- /dev/null +++ b/drivers/usb/otg/mxs-phy.c @@ -0,0 +1,186 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * Copyright (C) 2012 Marek Vasut <marex@denx.de> + * on behalf of DENX Software Engineering GmbH + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/usb/otg.h> +#include <linux/stmp_device.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> + +#define DRIVER_NAME "mxs_phy" + +#define HW_USBPHY_PWD 0x00 +#define HW_USBPHY_CTRL 0x30 +#define HW_USBPHY_CTRL_SET 0x34 +#define HW_USBPHY_CTRL_CLR 0x38 + +#define BM_USBPHY_CTRL_SFTRST BIT(31) +#define BM_USBPHY_CTRL_CLKGATE BIT(30) +#define BM_USBPHY_CTRL_ENUTMILEVEL3 BIT(15) +#define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14) +#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1) + +struct mxs_phy { + struct usb_phy phy; + struct clk *clk; +}; + +#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) + +static void mxs_phy_hw_init(struct mxs_phy *mxs_phy) +{ + void __iomem *base = mxs_phy->phy.io_priv; + + stmp_reset_block(base + HW_USBPHY_CTRL); + + /* Power up the PHY */ + writel_relaxed(0, base + HW_USBPHY_PWD); + + /* enable FS/LS device */ + writel_relaxed(BM_USBPHY_CTRL_ENUTMILEVEL2 | + BM_USBPHY_CTRL_ENUTMILEVEL3, + base + HW_USBPHY_CTRL_SET); +} + +static int mxs_phy_init(struct usb_phy *phy) +{ + struct mxs_phy *mxs_phy = to_mxs_phy(phy); + + clk_prepare_enable(mxs_phy->clk); + mxs_phy_hw_init(mxs_phy); + + return 0; +} + +static void mxs_phy_shutdown(struct usb_phy *phy) +{ + struct mxs_phy *mxs_phy = to_mxs_phy(phy); + + writel_relaxed(BM_USBPHY_CTRL_CLKGATE, + phy->io_priv + HW_USBPHY_CTRL_SET); + + clk_disable_unprepare(mxs_phy->clk); +} + +static int mxs_phy_on_connect(struct usb_phy *phy, int port) +{ + dev_dbg(phy->dev, "Connect on port %d\n", port); + + mxs_phy_hw_init(to_mxs_phy(phy)); + writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT, + phy->io_priv + HW_USBPHY_CTRL_SET); + + return 0; +} + +static int mxs_phy_on_disconnect(struct usb_phy *phy, int port) +{ + dev_dbg(phy->dev, "Disconnect on port %d\n", port); + + writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT, + phy->io_priv + HW_USBPHY_CTRL_CLR); + + return 0; +} + +static int mxs_phy_probe(struct platform_device *pdev) +{ + struct resource *res; + void __iomem *base; + struct clk *clk; + struct mxs_phy *mxs_phy; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "can't get device resources\n"); + return -ENOENT; + } + + base = devm_request_and_ioremap(&pdev->dev, res); + if (!base) + return -EBUSY; + + clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(clk)) { + dev_err(&pdev->dev, + "can't get the clock, err=%ld", PTR_ERR(clk)); + return PTR_ERR(clk); + } + + mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL); + if (!mxs_phy) { + dev_err(&pdev->dev, "Failed to allocate USB PHY structure!\n"); + return -ENOMEM; + } + + mxs_phy->phy.io_priv = base; + mxs_phy->phy.dev = &pdev->dev; + mxs_phy->phy.label = DRIVER_NAME; + mxs_phy->phy.init = mxs_phy_init; + mxs_phy->phy.shutdown = mxs_phy_shutdown; + mxs_phy->phy.notify_connect = mxs_phy_on_connect; + mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect; + + ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier); + + mxs_phy->clk = clk; + + platform_set_drvdata(pdev, &mxs_phy->phy); + + return 0; +} + +static int __devexit mxs_phy_remove(struct platform_device *pdev) +{ + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static const struct of_device_id mxs_phy_dt_ids[] = { + { .compatible = "fsl,imx23-usbphy", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids); + +static struct platform_driver mxs_phy_driver = { + .probe = mxs_phy_probe, + .remove = __devexit_p(mxs_phy_remove), + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + .of_match_table = mxs_phy_dt_ids, + }, +}; + +static int __init mxs_phy_module_init(void) +{ + return platform_driver_register(&mxs_phy_driver); +} +postcore_initcall(mxs_phy_module_init); + +static void __exit mxs_phy_module_exit(void) +{ + platform_driver_unregister(&mxs_phy_driver); +} +module_exit(mxs_phy_module_exit); + +MODULE_ALIAS("platform:mxs-usb-phy"); +MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); +MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); +MODULE_DESCRIPTION("Freescale MXS USB PHY driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c index 58b26df6afd1..803f958f4133 100644 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ b/drivers/usb/otg/nop-usb-xceiv.c @@ -117,7 +117,7 @@ static int __devinit nop_usb_xceiv_probe(struct platform_device *pdev) nop->phy.otg->set_host = nop_set_host; nop->phy.otg->set_peripheral = nop_set_peripheral; - err = usb_set_transceiver(&nop->phy); + err = usb_add_phy(&nop->phy, USB_PHY_TYPE_USB2); if (err) { dev_err(&pdev->dev, "can't register transceiver, err: %d\n", err); @@ -139,7 +139,7 @@ static int __devexit nop_usb_xceiv_remove(struct platform_device *pdev) { struct nop_usb_xceiv *nop = platform_get_drvdata(pdev); - usb_set_transceiver(NULL); + usb_remove_phy(&nop->phy); platform_set_drvdata(pdev, NULL); kfree(nop->phy.otg); diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index 801e597a1541..1bf60a22595c 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -11,60 +11,195 @@ #include <linux/kernel.h> #include <linux/export.h> +#include <linux/err.h> #include <linux/device.h> +#include <linux/slab.h> #include <linux/usb/otg.h> -static struct usb_phy *phy; +static LIST_HEAD(phy_list); +static DEFINE_SPINLOCK(phy_lock); + +static struct usb_phy *__usb_find_phy(struct list_head *list, + enum usb_phy_type type) +{ + struct usb_phy *phy = NULL; + + list_for_each_entry(phy, list, head) { + if (phy->type != type) + continue; + + return phy; + } + + return ERR_PTR(-ENODEV); +} + +static void devm_usb_phy_release(struct device *dev, void *res) +{ + struct usb_phy *phy = *(struct usb_phy **)res; + + usb_put_phy(phy); +} + +static int devm_usb_phy_match(struct device *dev, void *res, void *match_data) +{ + return res == match_data; +} /** - * usb_get_transceiver - find the (single) USB transceiver + * devm_usb_get_phy - find the USB PHY + * @dev - device that requests this phy + * @type - the type of the phy the controller requires * - * Returns the transceiver driver, after getting a refcount to it; or - * null if there is no such transceiver. The caller is responsible for - * calling usb_put_transceiver() to release that count. + * Gets the phy using usb_get_phy(), and associates a device with it using + * devres. On driver detach, release function is invoked on the devres data, + * then, devres data is freed. * * For use by USB host and peripheral drivers. */ -struct usb_phy *usb_get_transceiver(void) +struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type) { - if (phy) - get_device(phy->dev); + struct usb_phy **ptr, *phy; + + ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return NULL; + + phy = usb_get_phy(type); + if (!IS_ERR(phy)) { + *ptr = phy; + devres_add(dev, ptr); + } else + devres_free(ptr); + + return phy; +} +EXPORT_SYMBOL(devm_usb_get_phy); + +/** + * usb_get_phy - find the USB PHY + * @type - the type of the phy the controller requires + * + * Returns the phy driver, after getting a refcount to it; or + * -ENODEV if there is no such phy. The caller is responsible for + * calling usb_put_phy() to release that count. + * + * For use by USB host and peripheral drivers. + */ +struct usb_phy *usb_get_phy(enum usb_phy_type type) +{ + struct usb_phy *phy = NULL; + unsigned long flags; + + spin_lock_irqsave(&phy_lock, flags); + + phy = __usb_find_phy(&phy_list, type); + if (IS_ERR(phy)) { + pr_err("unable to find transceiver of type %s\n", + usb_phy_type_string(type)); + goto err0; + } + + get_device(phy->dev); + +err0: + spin_unlock_irqrestore(&phy_lock, flags); + return phy; } -EXPORT_SYMBOL(usb_get_transceiver); +EXPORT_SYMBOL(usb_get_phy); + +/** + * devm_usb_put_phy - release the USB PHY + * @dev - device that wants to release this phy + * @phy - the phy returned by devm_usb_get_phy() + * + * destroys the devres associated with this phy and invokes usb_put_phy + * to release the phy. + * + * For use by USB host and peripheral drivers. + */ +void devm_usb_put_phy(struct device *dev, struct usb_phy *phy) +{ + int r; + + r = devres_destroy(dev, devm_usb_phy_release, devm_usb_phy_match, phy); + dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n"); +} +EXPORT_SYMBOL(devm_usb_put_phy); /** - * usb_put_transceiver - release the (single) USB transceiver - * @x: the transceiver returned by usb_get_transceiver() + * usb_put_phy - release the USB PHY + * @x: the phy returned by usb_get_phy() * - * Releases a refcount the caller received from usb_get_transceiver(). + * Releases a refcount the caller received from usb_get_phy(). * * For use by USB host and peripheral drivers. */ -void usb_put_transceiver(struct usb_phy *x) +void usb_put_phy(struct usb_phy *x) { if (x) put_device(x->dev); } -EXPORT_SYMBOL(usb_put_transceiver); +EXPORT_SYMBOL(usb_put_phy); /** - * usb_set_transceiver - declare the (single) USB transceiver - * @x: the USB transceiver to be used; or NULL + * usb_add_phy - declare the USB PHY + * @x: the USB phy to be used; or NULL + * @type - the type of this PHY * - * This call is exclusively for use by transceiver drivers, which + * This call is exclusively for use by phy drivers, which * coordinate the activities of drivers for host and peripheral * controllers, and in some cases for VBUS current regulation. */ -int usb_set_transceiver(struct usb_phy *x) +int usb_add_phy(struct usb_phy *x, enum usb_phy_type type) +{ + int ret = 0; + unsigned long flags; + struct usb_phy *phy; + + if (x && x->type != USB_PHY_TYPE_UNDEFINED) { + dev_err(x->dev, "not accepting initialized PHY %s\n", x->label); + return -EINVAL; + } + + spin_lock_irqsave(&phy_lock, flags); + + list_for_each_entry(phy, &phy_list, head) { + if (phy->type == type) { + ret = -EBUSY; + dev_err(x->dev, "transceiver type %s already exists\n", + usb_phy_type_string(type)); + goto out; + } + } + + x->type = type; + list_add_tail(&x->head, &phy_list); + +out: + spin_unlock_irqrestore(&phy_lock, flags); + return ret; +} +EXPORT_SYMBOL(usb_add_phy); + +/** + * usb_remove_phy - remove the OTG PHY + * @x: the USB OTG PHY to be removed; + * + * This reverts the effects of usb_add_phy + */ +void usb_remove_phy(struct usb_phy *x) { - if (phy && x) - return -EBUSY; - phy = x; - return 0; + unsigned long flags; + + spin_lock_irqsave(&phy_lock, flags); + if (x) + list_del(&x->head); + spin_unlock_irqrestore(&phy_lock, flags); } -EXPORT_SYMBOL(usb_set_transceiver); +EXPORT_SYMBOL(usb_remove_phy); const char *otg_state_string(enum usb_otg_state state) { diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index c4a86da858e2..523cad5bfea9 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -33,11 +33,11 @@ #include <linux/io.h> #include <linux/delay.h> #include <linux/usb/otg.h> +#include <linux/usb/musb-omap.h> #include <linux/usb/ulpi.h> #include <linux/i2c/twl.h> #include <linux/regulator/consumer.h> #include <linux/err.h> -#include <linux/notifier.h> #include <linux/slab.h> /* Register defines */ @@ -159,7 +159,7 @@ struct twl4030_usb { enum twl4030_usb_mode usb_mode; int irq; - u8 linkstat; + enum omap_musb_vbus_id_status linkstat; bool vbus_supplied; u8 asleep; bool irq_enabled; @@ -246,11 +246,11 @@ twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits) /*-------------------------------------------------------------------------*/ -static enum usb_phy_events twl4030_usb_linkstat(struct twl4030_usb *twl) +static enum omap_musb_vbus_id_status + twl4030_usb_linkstat(struct twl4030_usb *twl) { int status; - int linkstat = USB_EVENT_NONE; - struct usb_otg *otg = twl->phy.otg; + enum omap_musb_vbus_id_status linkstat = OMAP_MUSB_UNKNOWN; twl->vbus_supplied = false; @@ -273,30 +273,23 @@ static enum usb_phy_events twl4030_usb_linkstat(struct twl4030_usb *twl) twl->vbus_supplied = true; if (status & BIT(2)) - linkstat = USB_EVENT_ID; + linkstat = OMAP_MUSB_ID_GROUND; else - linkstat = USB_EVENT_VBUS; - } else - linkstat = USB_EVENT_NONE; + linkstat = OMAP_MUSB_VBUS_VALID; + } else { + if (twl->linkstat != OMAP_MUSB_UNKNOWN) + linkstat = OMAP_MUSB_VBUS_OFF; + } dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n", status, status, linkstat); - twl->phy.last_event = linkstat; - /* REVISIT this assumes host and peripheral controllers * are registered, and that both are active... */ spin_lock_irq(&twl->lock); twl->linkstat = linkstat; - if (linkstat == USB_EVENT_ID) { - otg->default_a = true; - twl->phy.state = OTG_STATE_A_IDLE; - } else { - otg->default_a = false; - twl->phy.state = OTG_STATE_B_IDLE; - } spin_unlock_irq(&twl->lock); return linkstat; @@ -501,10 +494,10 @@ static DEVICE_ATTR(vbus, 0444, twl4030_usb_vbus_show, NULL); static irqreturn_t twl4030_usb_irq(int irq, void *_twl) { struct twl4030_usb *twl = _twl; - int status; + enum omap_musb_vbus_id_status status; status = twl4030_usb_linkstat(twl); - if (status >= 0) { + if (status > 0) { /* FIXME add a set_power() method so that B-devices can * configure the charger appropriately. It's not always * correct to consume VBUS power, and how much current to @@ -516,13 +509,13 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl) * USB_LINK_VBUS state. musb_hdrc won't care until it * starts to handle softconnect right. */ - if (status == USB_EVENT_NONE) + if (status == OMAP_MUSB_VBUS_OFF || + status == OMAP_MUSB_ID_FLOAT) twl4030_phy_suspend(twl, 0); else twl4030_phy_resume(twl); - atomic_notifier_call_chain(&twl->phy.notifier, status, - twl->phy.otg->gadget); + omap_musb_mailbox(twl->linkstat); } sysfs_notify(&twl->dev->kobj, NULL, "vbus"); @@ -531,11 +524,12 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl) static void twl4030_usb_phy_init(struct twl4030_usb *twl) { - int status; + enum omap_musb_vbus_id_status status; status = twl4030_usb_linkstat(twl); - if (status >= 0) { - if (status == USB_EVENT_NONE) { + if (status > 0) { + if (status == OMAP_MUSB_VBUS_OFF || + status == OMAP_MUSB_ID_FLOAT) { __twl4030_phy_power(twl, 0); twl->asleep = 1; } else { @@ -543,8 +537,7 @@ static void twl4030_usb_phy_init(struct twl4030_usb *twl) twl->asleep = 0; } - atomic_notifier_call_chain(&twl->phy.notifier, status, - twl->phy.otg->gadget); + omap_musb_mailbox(twl->linkstat); } sysfs_notify(&twl->dev->kobj, NULL, "vbus"); } @@ -598,21 +591,20 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) return -EINVAL; } - twl = kzalloc(sizeof *twl, GFP_KERNEL); + twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL); if (!twl) return -ENOMEM; - otg = kzalloc(sizeof *otg, GFP_KERNEL); - if (!otg) { - kfree(twl); + otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL); + if (!otg) return -ENOMEM; - } twl->dev = &pdev->dev; twl->irq = platform_get_irq(pdev, 0); twl->usb_mode = pdata->usb_mode; twl->vbus_supplied = false; twl->asleep = 1; + twl->linkstat = OMAP_MUSB_UNKNOWN; twl->phy.dev = twl->dev; twl->phy.label = "twl4030"; @@ -629,18 +621,14 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) err = twl4030_usb_ldo_init(twl); if (err) { dev_err(&pdev->dev, "ldo init failed\n"); - kfree(otg); - kfree(twl); return err; } - usb_set_transceiver(&twl->phy); + usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2); platform_set_drvdata(pdev, twl); if (device_create_file(&pdev->dev, &dev_attr_vbus)) dev_warn(&pdev->dev, "could not create sysfs file\n"); - ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier); - /* Our job is to use irqs and status from the power module * to keep the transceiver disabled when nothing's connected. * @@ -651,13 +639,11 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev) */ twl->irq_enabled = true; status = request_threaded_irq(twl->irq, NULL, twl4030_usb_irq, - IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, - "twl4030_usb", twl); + IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | + IRQF_ONESHOT, "twl4030_usb", twl); if (status < 0) { dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n", twl->irq, status); - kfree(otg); - kfree(twl); return status; } @@ -701,9 +687,6 @@ static int __exit twl4030_usb_remove(struct platform_device *pdev) regulator_put(twl->usb1v8); regulator_put(twl->usb3v1); - kfree(twl->phy.otg); - kfree(twl); - return 0; } diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c index 0eabb049b6a9..6907d8df7a27 100644 --- a/drivers/usb/otg/twl6030-usb.c +++ b/drivers/usb/otg/twl6030-usb.c @@ -26,10 +26,10 @@ #include <linux/platform_device.h> #include <linux/io.h> #include <linux/usb/otg.h> +#include <linux/usb/musb-omap.h> #include <linux/i2c/twl.h> #include <linux/regulator/consumer.h> #include <linux/err.h> -#include <linux/notifier.h> #include <linux/slab.h> #include <linux/delay.h> @@ -100,7 +100,7 @@ struct twl6030_usb { int irq1; int irq2; - u8 linkstat; + enum omap_musb_vbus_id_status linkstat; u8 asleep; bool irq_enabled; bool vbus_enable; @@ -147,7 +147,7 @@ static int twl6030_phy_init(struct usb_phy *x) dev = twl->dev; pdata = dev->platform_data; - if (twl->linkstat == USB_EVENT_ID) + if (twl->linkstat == OMAP_MUSB_ID_GROUND) pdata->phy_power(twl->dev, 1, 1); else pdata->phy_power(twl->dev, 0, 1); @@ -235,13 +235,13 @@ static ssize_t twl6030_usb_vbus_show(struct device *dev, spin_lock_irqsave(&twl->lock, flags); switch (twl->linkstat) { - case USB_EVENT_VBUS: + case OMAP_MUSB_VBUS_VALID: ret = snprintf(buf, PAGE_SIZE, "vbus\n"); break; - case USB_EVENT_ID: + case OMAP_MUSB_ID_GROUND: ret = snprintf(buf, PAGE_SIZE, "id\n"); break; - case USB_EVENT_NONE: + case OMAP_MUSB_VBUS_OFF: ret = snprintf(buf, PAGE_SIZE, "none\n"); break; default: @@ -256,8 +256,7 @@ static DEVICE_ATTR(vbus, 0444, twl6030_usb_vbus_show, NULL); static irqreturn_t twl6030_usb_irq(int irq, void *_twl) { struct twl6030_usb *twl = _twl; - struct usb_otg *otg = twl->phy.otg; - int status; + enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; u8 vbus_state, hw_state; hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); @@ -268,22 +267,18 @@ static irqreturn_t twl6030_usb_irq(int irq, void *_twl) if (vbus_state & VBUS_DET) { regulator_enable(twl->usb3v3); twl->asleep = 1; - status = USB_EVENT_VBUS; - otg->default_a = false; - twl->phy.state = OTG_STATE_B_IDLE; + status = OMAP_MUSB_VBUS_VALID; twl->linkstat = status; - twl->phy.last_event = status; - atomic_notifier_call_chain(&twl->phy.notifier, - status, otg->gadget); + omap_musb_mailbox(status); } else { - status = USB_EVENT_NONE; - twl->linkstat = status; - twl->phy.last_event = status; - atomic_notifier_call_chain(&twl->phy.notifier, - status, otg->gadget); - if (twl->asleep) { - regulator_disable(twl->usb3v3); - twl->asleep = 0; + if (twl->linkstat != OMAP_MUSB_UNKNOWN) { + status = OMAP_MUSB_VBUS_OFF; + twl->linkstat = status; + omap_musb_mailbox(status); + if (twl->asleep) { + regulator_disable(twl->usb3v3); + twl->asleep = 0; + } } } } @@ -295,8 +290,7 @@ static irqreturn_t twl6030_usb_irq(int irq, void *_twl) static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) { struct twl6030_usb *twl = _twl; - struct usb_otg *otg = twl->phy.otg; - int status = USB_EVENT_NONE; + enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; u8 hw_state; hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); @@ -307,13 +301,9 @@ static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) twl->asleep = 1; twl6030_writeb(twl, TWL_MODULE_USB, 0x1, USB_ID_INT_EN_HI_CLR); twl6030_writeb(twl, TWL_MODULE_USB, 0x10, USB_ID_INT_EN_HI_SET); - status = USB_EVENT_ID; - otg->default_a = true; - twl->phy.state = OTG_STATE_A_IDLE; + status = OMAP_MUSB_ID_GROUND; twl->linkstat = status; - twl->phy.last_event = status; - atomic_notifier_call_chain(&twl->phy.notifier, status, - otg->gadget); + omap_musb_mailbox(status); } else { twl6030_writeb(twl, TWL_MODULE_USB, 0x10, USB_ID_INT_EN_HI_CLR); twl6030_writeb(twl, TWL_MODULE_USB, 0x1, USB_ID_INT_EN_HI_SET); @@ -402,20 +392,19 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; pdata = dev->platform_data; - twl = kzalloc(sizeof *twl, GFP_KERNEL); + twl = devm_kzalloc(dev, sizeof *twl, GFP_KERNEL); if (!twl) return -ENOMEM; - otg = kzalloc(sizeof *otg, GFP_KERNEL); - if (!otg) { - kfree(twl); + otg = devm_kzalloc(dev, sizeof *otg, GFP_KERNEL); + if (!otg) return -ENOMEM; - } twl->dev = &pdev->dev; twl->irq1 = platform_get_irq(pdev, 0); twl->irq2 = platform_get_irq(pdev, 1); twl->features = pdata->features; + twl->linkstat = OMAP_MUSB_UNKNOWN; twl->phy.dev = twl->dev; twl->phy.label = "twl6030"; @@ -436,18 +425,14 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) err = twl6030_usb_ldo_init(twl); if (err) { dev_err(&pdev->dev, "ldo init failed\n"); - kfree(otg); - kfree(twl); return err; } - usb_set_transceiver(&twl->phy); + usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2); platform_set_drvdata(pdev, twl); if (device_create_file(&pdev->dev, &dev_attr_vbus)) dev_warn(&pdev->dev, "could not create sysfs file\n"); - ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier); - INIT_WORK(&twl->set_vbus_work, otg_set_vbus_work); twl->irq_enabled = true; @@ -458,8 +443,6 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) dev_err(&pdev->dev, "can't get IRQ %d, err %d\n", twl->irq1, status); device_remove_file(twl->dev, &dev_attr_vbus); - kfree(otg); - kfree(twl); return status; } @@ -471,8 +454,6 @@ static int __devinit twl6030_usb_probe(struct platform_device *pdev) twl->irq2, status); free_irq(twl->irq1, twl); device_remove_file(twl->dev, &dev_attr_vbus); - kfree(otg); - kfree(twl); return status; } @@ -503,8 +484,6 @@ static int __exit twl6030_usb_remove(struct platform_device *pdev) pdata->phy_exit(twl->dev); device_remove_file(twl->dev, &dev_attr_vbus); cancel_work_sync(&twl->set_vbus_work); - kfree(twl->phy.otg); - kfree(twl); return 0; } diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index 30b757a3f59e..ecd173032fd4 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -771,22 +771,15 @@ static void xfer_work(struct work_struct *work) struct usbhs_pipe *pipe = pkt->pipe; struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe); struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); - struct scatterlist sg; struct dma_async_tx_descriptor *desc; struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt); struct device *dev = usbhs_priv_to_dev(priv); enum dma_transfer_direction dir; - dma_cookie_t cookie; dir = usbhs_pipe_is_dir_in(pipe) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV; - sg_init_table(&sg, 1); - sg_set_page(&sg, virt_to_page(pkt->dma), - pkt->length, offset_in_page(pkt->dma)); - sg_dma_address(&sg) = pkt->dma + pkt->actual; - sg_dma_len(&sg) = pkt->trans; - - desc = dmaengine_prep_slave_sg(chan, &sg, 1, dir, + desc = dmaengine_prep_slave_single(chan, pkt->dma + pkt->actual, + pkt->trans, dir, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) return; @@ -794,8 +787,7 @@ static void xfer_work(struct work_struct *work) desc->callback = usbhsf_dma_complete; desc->callback_param = pipe; - cookie = desc->tx_submit(desc); - if (cookie < 0) { + if (dmaengine_submit(desc) < 0) { dev_err(dev, "Failed to submit dma descriptor\n"); return; } diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index a1b99243dac9..af0b70eaf032 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -176,7 +176,7 @@ static void keyspan_set_termios(struct tty_struct *tty, tty_encode_baud_rate(tty, baud_rate, baud_rate); /* set CTS/RTS handshake etc. */ p_priv->cflag = cflag; - p_priv->flow_control = (cflag & CRTSCTS)? flow_cts: flow_none; + p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none; /* Mark/Space not supported */ tty->termios->c_cflag &= ~CMSPAR; @@ -474,7 +474,7 @@ static void usa28_indat_callback(struct urb *urb) p_priv = usb_get_serial_port_data(port); data = urb->transfer_buffer; - tty =tty_port_tty_get(&port->port); + tty = tty_port_tty_get(&port->port); if (tty && urb->actual_length) { tty_insert_flip_string(tty, data, urb->actual_length); tty_flip_buffer_push(tty); @@ -557,9 +557,9 @@ static void usa28_instat_callback(struct urb *urb) p_priv->dcd_state = ((msg->dcd) ? 1 : 0); p_priv->ri_state = ((msg->ri) ? 1 : 0); - if( old_dcd_state != p_priv->dcd_state && old_dcd_state) { + if (old_dcd_state != p_priv->dcd_state && old_dcd_state) { tty = tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty)) + if (tty && !C_CLOCAL(tty)) tty_hangup(tty); tty_kref_put(tty); } @@ -1036,15 +1036,12 @@ static int keyspan_write_room(struct tty_struct *tty) static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port) { struct keyspan_port_private *p_priv; - struct keyspan_serial_private *s_priv; - struct usb_serial *serial = port->serial; const struct keyspan_device_details *d_details; int i, err; int baud_rate, device_port; struct urb *urb; unsigned int cflag = 0; - s_priv = usb_get_serial_data(serial); p_priv = usb_get_serial_port_data(port); d_details = p_priv->device_details; @@ -1102,7 +1099,7 @@ static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port) } /* set CTS/RTS handshake etc. */ p_priv->cflag = cflag; - p_priv->flow_control = (cflag & CRTSCTS)? flow_cts: flow_none; + p_priv->flow_control = (cflag & CRTSCTS) ? flow_cts : flow_none; keyspan_send_setup(port, 1); /* mdelay(100); */ @@ -1130,10 +1127,8 @@ static void keyspan_close(struct usb_serial_port *port) { int i; struct usb_serial *serial = port->serial; - struct keyspan_serial_private *s_priv; struct keyspan_port_private *p_priv; - s_priv = usb_get_serial_data(serial); p_priv = usb_get_serial_port_data(port); p_priv->rts_state = 0; @@ -1240,7 +1235,7 @@ static int keyspan_fake_startup(struct usb_serial *serial) if (request_ihex_firmware(&fw, fw_name, &serial->dev->dev)) { dev_err(&serial->dev->dev, "Required keyspan firmware image (%s) unavailable.\n", fw_name); - return(1); + return 1; } dbg("Uploading Keyspan %s firmware.", fw_name); @@ -1709,7 +1704,7 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, msg.setPrescaler = 0xff; } - msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1; + msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1; switch (p_priv->cflag & CSIZE) { case CS5: msg.lcr |= USA_DATABITS_5; @@ -1726,7 +1721,7 @@ static int keyspan_usa26_send_setup(struct usb_serial *serial, } if (p_priv->cflag & PARENB) { /* note USA_PARITY_NONE == 0 */ - msg.lcr |= (p_priv->cflag & PARODD)? + msg.lcr |= (p_priv->cflag & PARODD) ? USA_PARITY_ODD : USA_PARITY_EVEN; } msg.setLcr = 0xff; @@ -1994,7 +1989,7 @@ static int keyspan_usa49_send_setup(struct usb_serial *serial, /* msg.setPrescaler = 0xff; */ } - msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1; + msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1; switch (p_priv->cflag & CSIZE) { case CS5: msg.lcr |= USA_DATABITS_5; @@ -2011,7 +2006,7 @@ static int keyspan_usa49_send_setup(struct usb_serial *serial, } if (p_priv->cflag & PARENB) { /* note USA_PARITY_NONE == 0 */ - msg.lcr |= (p_priv->cflag & PARODD)? + msg.lcr |= (p_priv->cflag & PARODD) ? USA_PARITY_ODD : USA_PARITY_EVEN; } msg.setLcr = 0xff; @@ -2178,7 +2173,7 @@ static int keyspan_usa90_send_setup(struct usb_serial *serial, msg.txMode = TXMODE_BYHAND; } - msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1; + msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1; switch (p_priv->cflag & CSIZE) { case CS5: msg.lcr |= USA_DATABITS_5; @@ -2195,7 +2190,7 @@ static int keyspan_usa90_send_setup(struct usb_serial *serial, } if (p_priv->cflag & PARENB) { /* note USA_PARITY_NONE == 0 */ - msg.lcr |= (p_priv->cflag & PARODD)? + msg.lcr |= (p_priv->cflag & PARODD) ? USA_PARITY_ODD : USA_PARITY_EVEN; } if (p_priv->old_cflag != p_priv->cflag) { @@ -2322,7 +2317,7 @@ static int keyspan_usa67_send_setup(struct usb_serial *serial, } if (p_priv->cflag & PARENB) { /* note USA_PARITY_NONE == 0 */ - msg.lcr |= (p_priv->cflag & PARODD)? + msg.lcr |= (p_priv->cflag & PARODD) ? USA_PARITY_ODD : USA_PARITY_EVEN; } msg.setLcr = 0xff; diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 417ab1b0aa30..08ff9b862049 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -936,6 +936,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0165, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0167, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0326, 0xff, 0xff, 0xff), + .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1008, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1010, 0xff, 0xff, 0xff), @@ -1310,6 +1312,10 @@ static struct usb_serial_driver * const serial_drivers[] = { static bool debug; +struct option_private { + u8 bInterfaceNumber; +}; + module_usb_serial_driver(serial_drivers, option_ids); static bool is_blacklisted(const u8 ifnum, enum option_blacklist_reason reason, @@ -1340,51 +1346,78 @@ static int option_probe(struct usb_serial *serial, const struct usb_device_id *id) { struct usb_wwan_intf_private *data; - - /* D-Link DWM 652 still exposes CD-Rom emulation interface in modem mode */ - if (serial->dev->descriptor.idVendor == DLINK_VENDOR_ID && - serial->dev->descriptor.idProduct == DLINK_PRODUCT_DWM_652 && - serial->interface->cur_altsetting->desc.bInterfaceClass == 0x8) + struct option_private *priv; + struct usb_interface_descriptor *iface_desc = + &serial->interface->cur_altsetting->desc; + struct usb_device_descriptor *dev_desc = &serial->dev->descriptor; + + /* + * D-Link DWM 652 still exposes CD-Rom emulation interface in modem + * mode. + */ + if (dev_desc->idVendor == DLINK_VENDOR_ID && + dev_desc->idProduct == DLINK_PRODUCT_DWM_652 && + iface_desc->bInterfaceClass == 0x08) return -ENODEV; /* Bandrich modem and AT command interface is 0xff */ - if ((serial->dev->descriptor.idVendor == BANDRICH_VENDOR_ID || - serial->dev->descriptor.idVendor == PIRELLI_VENDOR_ID) && - serial->interface->cur_altsetting->desc.bInterfaceClass != 0xff) + if ((dev_desc->idVendor == BANDRICH_VENDOR_ID || + dev_desc->idVendor == PIRELLI_VENDOR_ID) && + iface_desc->bInterfaceClass != 0xff) return -ENODEV; - - /* Don't bind reserved interfaces (like network ones) which often have + /* + * Don't bind reserved interfaces (like network ones) which often have * the same class/subclass/protocol as the serial interfaces. Look at * the Windows driver .INF files for reserved interface numbers. */ if (is_blacklisted( - serial->interface->cur_altsetting->desc.bInterfaceNumber, + iface_desc->bInterfaceNumber, OPTION_BLACKLIST_RESERVED_IF, (const struct option_blacklist_info *) id->driver_info)) return -ENODEV; - - /* Don't bind network interface on Samsung GT-B3730, it is handled by a separate module */ - if (serial->dev->descriptor.idVendor == SAMSUNG_VENDOR_ID && - serial->dev->descriptor.idProduct == SAMSUNG_PRODUCT_GT_B3730 && - serial->interface->cur_altsetting->desc.bInterfaceClass != USB_CLASS_CDC_DATA) + /* + * Don't bind network interface on Samsung GT-B3730, it is handled by + * a separate module. + */ + if (dev_desc->idVendor == SAMSUNG_VENDOR_ID && + dev_desc->idProduct == SAMSUNG_PRODUCT_GT_B3730 && + iface_desc->bInterfaceClass != USB_CLASS_CDC_DATA) return -ENODEV; - data = serial->private = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL); + data = kzalloc(sizeof(struct usb_wwan_intf_private), GFP_KERNEL); if (!data) return -ENOMEM; - data->send_setup = option_send_setup; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) { + kfree(data); + return -ENOMEM; + } + + priv->bInterfaceNumber = iface_desc->bInterfaceNumber; + data->private = priv; + + if (!is_blacklisted(iface_desc->bInterfaceNumber, + OPTION_BLACKLIST_SENDSETUP, + (struct option_blacklist_info *)id->driver_info)) { + data->send_setup = option_send_setup; + } spin_lock_init(&data->susp_lock); - data->private = (void *)id->driver_info; + + usb_set_serial_data(serial, data); + return 0; } static void option_release(struct usb_serial *serial) { - struct usb_wwan_intf_private *priv = usb_get_serial_data(serial); + struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial); + struct option_private *priv = intfdata->private; usb_wwan_release(serial); kfree(priv); + kfree(intfdata); } static void option_instat_callback(struct urb *urb) @@ -1451,18 +1484,11 @@ static void option_instat_callback(struct urb *urb) static int option_send_setup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; - struct usb_wwan_intf_private *intfdata = - (struct usb_wwan_intf_private *) serial->private; + struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial); + struct option_private *priv = intfdata->private; struct usb_wwan_port_private *portdata; - int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber; int val = 0; - if (is_blacklisted(ifNum, OPTION_BLACKLIST_SENDSETUP, - (struct option_blacklist_info *) intfdata->private)) { - dbg("No send_setup on blacklisted interface #%d\n", ifNum); - return -EIO; - } - portdata = usb_get_serial_port_data(port); if (portdata->dtr_state) @@ -1470,9 +1496,9 @@ static int option_send_setup(struct usb_serial_port *port) if (portdata->rts_state) val |= 0x02; - return usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), - 0x22, 0x21, val, ifNum, NULL, 0, USB_CTRL_SET_TIMEOUT); + return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + 0x22, 0x21, val, priv->bInterfaceNumber, NULL, + 0, USB_CTRL_SET_TIMEOUT); } MODULE_AUTHOR(DRIVER_AUTHOR); diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 996015c5f1ac..8d103019d6aa 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -105,6 +105,10 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE(0x1410, 0xa021)}, /* Novatel Gobi 3000 Composite */ {USB_DEVICE(0x413c, 0x8193)}, /* Dell Gobi 3000 QDL */ {USB_DEVICE(0x413c, 0x8194)}, /* Dell Gobi 3000 Composite */ + {USB_DEVICE(0x1199, 0x68a4)}, /* Sierra Wireless QDL */ + {USB_DEVICE(0x1199, 0x68a5)}, /* Sierra Wireless Modem */ + {USB_DEVICE(0x1199, 0x68a8)}, /* Sierra Wireless QDL */ + {USB_DEVICE(0x1199, 0x68a9)}, /* Sierra Wireless Modem */ {USB_DEVICE(0x1199, 0x9010)}, /* Sierra Wireless Gobi 3000 QDL */ {USB_DEVICE(0x1199, 0x9012)}, /* Sierra Wireless Gobi 3000 QDL */ {USB_DEVICE(0x1199, 0x9013)}, /* Sierra Wireless Gobi 3000 Modem device (MC8355) */ @@ -112,8 +116,24 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE(0x1199, 0x9015)}, /* Sierra Wireless Gobi 3000 Modem device */ {USB_DEVICE(0x1199, 0x9018)}, /* Sierra Wireless Gobi 3000 QDL */ {USB_DEVICE(0x1199, 0x9019)}, /* Sierra Wireless Gobi 3000 Modem device */ + {USB_DEVICE(0x1199, 0x901b)}, /* Sierra Wireless MC7770 */ {USB_DEVICE(0x12D1, 0x14F0)}, /* Sony Gobi 3000 QDL */ {USB_DEVICE(0x12D1, 0x14F1)}, /* Sony Gobi 3000 Composite */ + + /* non Gobi Qualcomm serial devices */ + {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 0)}, /* Sierra Wireless MC7700 Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 2)}, /* Sierra Wireless MC7700 NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x0f3d, 0x68a2, 3)}, /* Sierra Wireless MC7700 Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 0)}, /* Sierra Wireless MC7750 Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 2)}, /* Sierra Wireless MC7750 NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x114f, 0x68a2, 3)}, /* Sierra Wireless MC7750 Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 0)}, /* Sierra Wireless MC7710 Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 2)}, /* Sierra Wireless MC7710 NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 3)}, /* Sierra Wireless MC7710 Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 0)}, /* Sierra Wireless EM7700 Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 2)}, /* Sierra Wireless EM7700 NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 3)}, /* Sierra Wireless EM7700 Modem */ + { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, id_table); @@ -127,6 +147,7 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) __u8 nintf; __u8 ifnum; bool is_gobi1k = id->driver_info ? true : false; + int altsetting = -1; dev_dbg(dev, "Is Gobi 1000 = %d\n", is_gobi1k); @@ -142,38 +163,43 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) spin_lock_init(&data->susp_lock); - switch (nintf) { - case 1: + if (nintf == 1) { /* QDL mode */ /* Gobi 2000 has a single altsetting, older ones have two */ if (serial->interface->num_altsetting == 2) intf = &serial->interface->altsetting[1]; else if (serial->interface->num_altsetting > 2) - break; + goto done; if (intf->desc.bNumEndpoints == 2 && usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) && usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) { dev_dbg(dev, "QDL port found\n"); - if (serial->interface->num_altsetting == 1) { + if (serial->interface->num_altsetting == 1) retval = 0; /* Success */ - break; - } - - retval = usb_set_interface(serial->dev, ifnum, 1); - if (retval < 0) { - dev_err(dev, - "Could not set interface, error %d\n", - retval); - retval = -ENODEV; - kfree(data); - } + else + altsetting = 1; } - break; + goto done; - case 3: - case 4: + } + + /* allow any number of interfaces when doing direct interface match */ + if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) { + dev_dbg(dev, "Generic Qualcomm serial interface found\n"); + altsetting = 0; + goto done; + } + + if (nintf < 3 || nintf > 4) { + dev_err(dev, "unknown number of interfaces: %d\n", nintf); + goto done; + } + + /* default to enabling interface */ + altsetting = 0; + switch (ifnum) { /* Composite mode; don't bind to the QMI/net interface as that * gets handled by other drivers. */ @@ -191,53 +217,44 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) * 3: NMEA */ - if (ifnum == 1 && !is_gobi1k) { + case 1: + if (is_gobi1k) + altsetting = -1; + else dev_dbg(dev, "Gobi 2K+ DM/DIAG interface found\n"); - retval = usb_set_interface(serial->dev, ifnum, 0); - if (retval < 0) { - dev_err(dev, - "Could not set interface, error %d\n", - retval); - retval = -ENODEV; - kfree(data); - } - } else if (ifnum == 2) { - dev_dbg(dev, "Modem port found\n"); - retval = usb_set_interface(serial->dev, ifnum, 0); - if (retval < 0) { - dev_err(dev, - "Could not set interface, error %d\n", - retval); - retval = -ENODEV; - kfree(data); - } - } else if (ifnum==3 && !is_gobi1k) { + break; + case 2: + dev_dbg(dev, "Modem port found\n"); + break; + case 3: + if (is_gobi1k) + altsetting = -1; + else /* * NMEA (serial line 9600 8N1) * # echo "\$GPS_START" > /dev/ttyUSBx * # echo "\$GPS_STOP" > /dev/ttyUSBx */ dev_dbg(dev, "Gobi 2K+ NMEA GPS interface found\n"); - retval = usb_set_interface(serial->dev, ifnum, 0); - if (retval < 0) { - dev_err(dev, - "Could not set interface, error %d\n", - retval); - retval = -ENODEV; - kfree(data); - } - } - break; + } - default: - dev_err(dev, "unknown number of interfaces: %d\n", nintf); - kfree(data); - retval = -ENODEV; +done: + if (altsetting >= 0) { + retval = usb_set_interface(serial->dev, ifnum, altsetting); + if (retval < 0) { + dev_err(dev, + "Could not set interface, error %d\n", + retval); + retval = -ENODEV; + } } - /* Set serial->private if not returning -ENODEV */ - if (retval != -ENODEV) + /* Set serial->private if not returning error */ + if (retval == 0) usb_set_serial_data(serial, data); + else + kfree(data); + return retval; } diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index 8dd88ebe9863..151670b6b72a 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -345,7 +345,6 @@ static void qt2_set_termios(struct tty_struct *tty, static int qt2_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial; - struct qt2_serial_private *serial_priv; struct qt2_port_private *port_priv; u8 *data; u16 device_port; @@ -357,7 +356,6 @@ static int qt2_open(struct tty_struct *tty, struct usb_serial_port *port) serial = port->serial; port_priv = usb_get_serial_port_data(port); - serial_priv = usb_get_serial_data(serial); /* set the port to RS232 mode */ status = qt2_control_msg(serial->dev, QT2_GET_SET_QMCR, @@ -417,13 +415,11 @@ static int qt2_open(struct tty_struct *tty, struct usb_serial_port *port) static void qt2_close(struct usb_serial_port *port) { struct usb_serial *serial; - struct qt2_serial_private *serial_priv; struct qt2_port_private *port_priv; unsigned long flags; int i; serial = port->serial; - serial_priv = usb_get_serial_data(serial); port_priv = usb_get_serial_port_data(port); port_priv->is_open = false; diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index d423d36acc04..0274710cced5 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -288,9 +288,6 @@ static const struct usb_device_id id_table[] = { /* Sierra Wireless HSPA Non-Composite Device */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */ - { USB_DEVICE(0x1199, 0x68A2), /* Sierra Wireless MC77xx in QMI mode */ - .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist - }, { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */ .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist }, diff --git a/drivers/usb/storage/protocol.c b/drivers/usb/storage/protocol.c index 82dd834709c7..5dfb4c36a1b0 100644 --- a/drivers/usb/storage/protocol.c +++ b/drivers/usb/storage/protocol.c @@ -66,7 +66,7 @@ void usb_stor_pad12_command(struct scsi_cmnd *srb, struct us_data *us) * NOTE: This only works because a scsi_cmnd struct field contains * a unsigned char cmnd[16], so we know we have storage available */ - for (; srb->cmd_len<12; srb->cmd_len++) + for (; srb->cmd_len < 12; srb->cmd_len++) srb->cmnd[srb->cmd_len] = 0; /* send the command to the transport layer */ @@ -76,14 +76,14 @@ void usb_stor_pad12_command(struct scsi_cmnd *srb, struct us_data *us) void usb_stor_ufi_command(struct scsi_cmnd *srb, struct us_data *us) { /* fix some commands -- this is a form of mode translation - * UFI devices only accept 12 byte long commands + * UFI devices only accept 12 byte long commands * * NOTE: This only works because a scsi_cmnd struct field contains * a unsigned char cmnd[16], so we know we have storage available */ /* Pad the ATAPI command with zeros */ - for (; srb->cmd_len<12; srb->cmd_len++) + for (; srb->cmd_len < 12; srb->cmd_len++) srb->cmnd[srb->cmd_len] = 0; /* set command length to 12 bytes (this affects the transport layer) */ diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 8ec8a6e66f50..638cd64f9610 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -41,16 +41,17 @@ struct sense_iu_old { struct uas_dev_info { struct usb_interface *intf; struct usb_device *udev; - int qdepth; + struct usb_anchor sense_urbs; + struct usb_anchor data_urbs; + int qdepth, resetting; + struct response_ui response; unsigned cmd_pipe, status_pipe, data_in_pipe, data_out_pipe; unsigned use_streams:1; unsigned uas_sense_old:1; struct scsi_cmnd *cmnd; - struct urb *status_urb; /* used only if stream support is available */ }; enum { - ALLOC_STATUS_URB = (1 << 0), SUBMIT_STATUS_URB = (1 << 1), ALLOC_DATA_IN_URB = (1 << 2), SUBMIT_DATA_IN_URB = (1 << 3), @@ -58,18 +59,18 @@ enum { SUBMIT_DATA_OUT_URB = (1 << 5), ALLOC_CMD_URB = (1 << 6), SUBMIT_CMD_URB = (1 << 7), - COMPLETED_DATA_IN = (1 << 8), - COMPLETED_DATA_OUT = (1 << 9), - DATA_COMPLETES_CMD = (1 << 10), + COMMAND_INFLIGHT = (1 << 8), + DATA_IN_URB_INFLIGHT = (1 << 9), + DATA_OUT_URB_INFLIGHT = (1 << 10), + COMMAND_COMPLETED = (1 << 11), }; /* Overrides scsi_pointer */ struct uas_cmd_info { unsigned int state; unsigned int stream; + unsigned int aborted; struct urb *cmd_urb; - /* status_urb is used only if stream support isn't available */ - struct urb *status_urb; struct urb *data_in_urb; struct urb *data_out_urb; struct list_head list; @@ -114,7 +115,6 @@ static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd) { struct sense_iu *sense_iu = urb->transfer_buffer; struct scsi_device *sdev = cmnd->device; - struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; if (urb->actual_length > 16) { unsigned len = be16_to_cpup(&sense_iu->len); @@ -132,15 +132,12 @@ static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd) } cmnd->result = sense_iu->status; - if (!(cmdinfo->state & DATA_COMPLETES_CMD)) - cmnd->scsi_done(cmnd); } static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd) { struct sense_iu_old *sense_iu = urb->transfer_buffer; struct scsi_device *sdev = cmnd->device; - struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; if (urb->actual_length > 8) { unsigned len = be16_to_cpup(&sense_iu->len) - 2; @@ -158,17 +155,51 @@ static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd) } cmnd->result = sense_iu->status; - if (!(cmdinfo->state & DATA_COMPLETES_CMD)) - cmnd->scsi_done(cmnd); +} + +static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller) +{ + struct uas_cmd_info *ci = (void *)&cmnd->SCp; + + scmd_printk(KERN_INFO, cmnd, "%s %p tag %d, inflight:" + "%s%s%s%s%s%s%s%s%s%s%s\n", + caller, cmnd, cmnd->request->tag, + (ci->state & SUBMIT_STATUS_URB) ? " s-st" : "", + (ci->state & ALLOC_DATA_IN_URB) ? " a-in" : "", + (ci->state & SUBMIT_DATA_IN_URB) ? " s-in" : "", + (ci->state & ALLOC_DATA_OUT_URB) ? " a-out" : "", + (ci->state & SUBMIT_DATA_OUT_URB) ? " s-out" : "", + (ci->state & ALLOC_CMD_URB) ? " a-cmd" : "", + (ci->state & SUBMIT_CMD_URB) ? " s-cmd" : "", + (ci->state & COMMAND_INFLIGHT) ? " CMD" : "", + (ci->state & DATA_IN_URB_INFLIGHT) ? " IN" : "", + (ci->state & DATA_OUT_URB_INFLIGHT) ? " OUT" : "", + (ci->state & COMMAND_COMPLETED) ? " done" : ""); +} + +static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller) +{ + struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; + + if (cmdinfo->state & (COMMAND_INFLIGHT | + DATA_IN_URB_INFLIGHT | + DATA_OUT_URB_INFLIGHT)) + return -EBUSY; + BUG_ON(cmdinfo->state & COMMAND_COMPLETED); + cmdinfo->state |= COMMAND_COMPLETED; + usb_free_urb(cmdinfo->data_in_urb); + usb_free_urb(cmdinfo->data_out_urb); + cmnd->scsi_done(cmnd); + return 0; } static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd, - unsigned direction) + unsigned direction) { struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; int err; - cmdinfo->state = direction; + cmdinfo->state |= direction | SUBMIT_STATUS_URB; err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC); if (err) { spin_lock(&uas_work_lock); @@ -186,12 +217,15 @@ static void uas_stat_cmplt(struct urb *urb) struct scsi_cmnd *cmnd; struct uas_cmd_info *cmdinfo; u16 tag; - int ret; if (urb->status) { dev_err(&urb->dev->dev, "URB BAD STATUS %d\n", urb->status); - if (devinfo->use_streams) - usb_free_urb(urb); + usb_free_urb(urb); + return; + } + + if (devinfo->resetting) { + usb_free_urb(urb); return; } @@ -201,47 +235,34 @@ static void uas_stat_cmplt(struct urb *urb) else cmnd = scsi_host_find_tag(shost, tag - 1); if (!cmnd) { - if (devinfo->use_streams) { + if (iu->iu_id != IU_ID_RESPONSE) { usb_free_urb(urb); return; } - ret = usb_submit_urb(urb, GFP_ATOMIC); - if (ret) - dev_err(&urb->dev->dev, "failed submit status urb\n"); - return; + } else { + cmdinfo = (void *)&cmnd->SCp; } - cmdinfo = (void *)&cmnd->SCp; switch (iu->iu_id) { case IU_ID_STATUS: if (devinfo->cmnd == cmnd) devinfo->cmnd = NULL; - if (!(cmdinfo->state & COMPLETED_DATA_IN) && - cmdinfo->data_in_urb) { - if (devinfo->use_streams) { - cmdinfo->state |= DATA_COMPLETES_CMD; - usb_unlink_urb(cmdinfo->data_in_urb); - } else { - usb_free_urb(cmdinfo->data_in_urb); - } - } - if (!(cmdinfo->state & COMPLETED_DATA_OUT) && - cmdinfo->data_out_urb) { - if (devinfo->use_streams) { - cmdinfo->state |= DATA_COMPLETES_CMD; - usb_unlink_urb(cmdinfo->data_in_urb); - } else { - usb_free_urb(cmdinfo->data_out_urb); - } - } - if (urb->actual_length < 16) devinfo->uas_sense_old = 1; if (devinfo->uas_sense_old) uas_sense_old(urb, cmnd); else uas_sense(urb, cmnd); + if (cmnd->result != 0) { + /* cancel data transfers on error */ + if (cmdinfo->state & DATA_IN_URB_INFLIGHT) + usb_unlink_urb(cmdinfo->data_in_urb); + if (cmdinfo->state & DATA_OUT_URB_INFLIGHT) + usb_unlink_urb(cmdinfo->data_out_urb); + } + cmdinfo->state &= ~COMMAND_INFLIGHT; + uas_try_complete(cmnd, __func__); break; case IU_ID_READ_READY: uas_xfer_data(urb, cmnd, SUBMIT_DATA_IN_URB); @@ -249,74 +270,59 @@ static void uas_stat_cmplt(struct urb *urb) case IU_ID_WRITE_READY: uas_xfer_data(urb, cmnd, SUBMIT_DATA_OUT_URB); break; + case IU_ID_RESPONSE: + /* store results for uas_eh_task_mgmt() */ + memcpy(&devinfo->response, iu, sizeof(devinfo->response)); + break; default: scmd_printk(KERN_ERR, cmnd, "Bogus IU (%d) received on status pipe\n", iu->iu_id); } - - if (devinfo->use_streams) { - usb_free_urb(urb); - return; - } - - ret = usb_submit_urb(urb, GFP_ATOMIC); - if (ret) - dev_err(&urb->dev->dev, "failed submit status urb\n"); -} - -static void uas_data_out_cmplt(struct urb *urb) -{ - struct scsi_cmnd *cmnd = urb->context; - struct scsi_data_buffer *sdb = scsi_out(cmnd); - struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; - - cmdinfo->state |= COMPLETED_DATA_OUT; - - sdb->resid = sdb->length - urb->actual_length; usb_free_urb(urb); - - if (cmdinfo->state & DATA_COMPLETES_CMD) - cmnd->scsi_done(cmnd); } -static void uas_data_in_cmplt(struct urb *urb) +static void uas_data_cmplt(struct urb *urb) { struct scsi_cmnd *cmnd = urb->context; - struct scsi_data_buffer *sdb = scsi_in(cmnd); struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; + struct scsi_data_buffer *sdb = NULL; - cmdinfo->state |= COMPLETED_DATA_IN; - - sdb->resid = sdb->length - urb->actual_length; - usb_free_urb(urb); - - if (cmdinfo->state & DATA_COMPLETES_CMD) - cmnd->scsi_done(cmnd); + if (cmdinfo->data_in_urb == urb) { + sdb = scsi_in(cmnd); + cmdinfo->state &= ~DATA_IN_URB_INFLIGHT; + } else if (cmdinfo->data_out_urb == urb) { + sdb = scsi_out(cmnd); + cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT; + } + BUG_ON(sdb == NULL); + if (urb->status) { + /* error: no data transfered */ + sdb->resid = sdb->length; + } else { + sdb->resid = sdb->length - urb->actual_length; + } + if (cmdinfo->aborted) { + return; + } + uas_try_complete(cmnd, __func__); } static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp, - unsigned int pipe, struct scsi_cmnd *cmnd, - enum dma_data_direction dir) + unsigned int pipe, u16 stream_id, + struct scsi_cmnd *cmnd, + enum dma_data_direction dir) { - struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; struct usb_device *udev = devinfo->udev; struct urb *urb = usb_alloc_urb(0, gfp); - struct scsi_data_buffer *sdb; - usb_complete_t complete_fn; - u16 stream_id = cmdinfo->stream; + struct scsi_data_buffer *sdb = (dir == DMA_FROM_DEVICE) + ? scsi_in(cmnd) : scsi_out(cmnd); if (!urb) goto out; - if (dir == DMA_FROM_DEVICE) { - sdb = scsi_in(cmnd); - complete_fn = uas_data_in_cmplt; - } else { - sdb = scsi_out(cmnd); - complete_fn = uas_data_out_cmplt; - } usb_fill_bulk_urb(urb, udev, pipe, NULL, sdb->length, - complete_fn, cmnd); - urb->stream_id = stream_id; + uas_data_cmplt, cmnd); + if (devinfo->use_streams) + urb->stream_id = stream_id; urb->num_sgs = udev->bus->sg_tablesize ? sdb->table.nents : 0; urb->sg = sdb->table.sgl; out: @@ -324,7 +330,7 @@ static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp, } static struct urb *uas_alloc_sense_urb(struct uas_dev_info *devinfo, gfp_t gfp, - struct Scsi_Host *shost, u16 stream_id) + struct Scsi_Host *shost, u16 stream_id) { struct usb_device *udev = devinfo->udev; struct urb *urb = usb_alloc_urb(0, gfp); @@ -388,38 +394,95 @@ static struct urb *uas_alloc_cmd_urb(struct uas_dev_info *devinfo, gfp_t gfp, return NULL; } +static int uas_submit_task_urb(struct scsi_cmnd *cmnd, gfp_t gfp, + u8 function, u16 stream_id) +{ + struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; + struct usb_device *udev = devinfo->udev; + struct urb *urb = usb_alloc_urb(0, gfp); + struct task_mgmt_iu *iu; + int err = -ENOMEM; + + if (!urb) + goto err; + + iu = kzalloc(sizeof(*iu), gfp); + if (!iu) + goto err; + + iu->iu_id = IU_ID_TASK_MGMT; + iu->tag = cpu_to_be16(stream_id); + int_to_scsilun(cmnd->device->lun, &iu->lun); + + iu->function = function; + switch (function) { + case TMF_ABORT_TASK: + if (blk_rq_tagged(cmnd->request)) + iu->task_tag = cpu_to_be16(cmnd->request->tag + 2); + else + iu->task_tag = cpu_to_be16(1); + break; + } + + usb_fill_bulk_urb(urb, udev, devinfo->cmd_pipe, iu, sizeof(*iu), + usb_free_urb, NULL); + urb->transfer_flags |= URB_FREE_BUFFER; + + err = usb_submit_urb(urb, gfp); + if (err) + goto err; + + return 0; + +err: + usb_free_urb(urb); + return err; +} + /* * Why should I request the Status IU before sending the Command IU? Spec * says to, but also says the device may receive them in any order. Seems * daft to me. */ -static int uas_submit_urbs(struct scsi_cmnd *cmnd, - struct uas_dev_info *devinfo, gfp_t gfp) +static int uas_submit_sense_urb(struct Scsi_Host *shost, + gfp_t gfp, unsigned int stream) { - struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; + struct uas_dev_info *devinfo = (void *)shost->hostdata[0]; + struct urb *urb; - if (cmdinfo->state & ALLOC_STATUS_URB) { - cmdinfo->status_urb = uas_alloc_sense_urb(devinfo, gfp, - cmnd->device->host, cmdinfo->stream); - if (!cmdinfo->status_urb) - return SCSI_MLQUEUE_DEVICE_BUSY; - cmdinfo->state &= ~ALLOC_STATUS_URB; + urb = uas_alloc_sense_urb(devinfo, gfp, shost, stream); + if (!urb) + return SCSI_MLQUEUE_DEVICE_BUSY; + if (usb_submit_urb(urb, gfp)) { + shost_printk(KERN_INFO, shost, + "sense urb submission failure\n"); + usb_free_urb(urb); + return SCSI_MLQUEUE_DEVICE_BUSY; } + usb_anchor_urb(urb, &devinfo->sense_urbs); + return 0; +} + +static int uas_submit_urbs(struct scsi_cmnd *cmnd, + struct uas_dev_info *devinfo, gfp_t gfp) +{ + struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; + int err; if (cmdinfo->state & SUBMIT_STATUS_URB) { - if (usb_submit_urb(cmdinfo->status_urb, gfp)) { - scmd_printk(KERN_INFO, cmnd, - "sense urb submission failure\n"); - return SCSI_MLQUEUE_DEVICE_BUSY; + err = uas_submit_sense_urb(cmnd->device->host, gfp, + cmdinfo->stream); + if (err) { + return err; } cmdinfo->state &= ~SUBMIT_STATUS_URB; } if (cmdinfo->state & ALLOC_DATA_IN_URB) { cmdinfo->data_in_urb = uas_alloc_data_urb(devinfo, gfp, - devinfo->data_in_pipe, cmnd, - DMA_FROM_DEVICE); + devinfo->data_in_pipe, cmdinfo->stream, + cmnd, DMA_FROM_DEVICE); if (!cmdinfo->data_in_urb) return SCSI_MLQUEUE_DEVICE_BUSY; cmdinfo->state &= ~ALLOC_DATA_IN_URB; @@ -432,12 +495,14 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd, return SCSI_MLQUEUE_DEVICE_BUSY; } cmdinfo->state &= ~SUBMIT_DATA_IN_URB; + cmdinfo->state |= DATA_IN_URB_INFLIGHT; + usb_anchor_urb(cmdinfo->data_in_urb, &devinfo->data_urbs); } if (cmdinfo->state & ALLOC_DATA_OUT_URB) { cmdinfo->data_out_urb = uas_alloc_data_urb(devinfo, gfp, - devinfo->data_out_pipe, cmnd, - DMA_TO_DEVICE); + devinfo->data_out_pipe, cmdinfo->stream, + cmnd, DMA_TO_DEVICE); if (!cmdinfo->data_out_urb) return SCSI_MLQUEUE_DEVICE_BUSY; cmdinfo->state &= ~ALLOC_DATA_OUT_URB; @@ -450,6 +515,8 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd, return SCSI_MLQUEUE_DEVICE_BUSY; } cmdinfo->state &= ~SUBMIT_DATA_OUT_URB; + cmdinfo->state |= DATA_OUT_URB_INFLIGHT; + usb_anchor_urb(cmdinfo->data_out_urb, &devinfo->data_urbs); } if (cmdinfo->state & ALLOC_CMD_URB) { @@ -467,6 +534,7 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd, return SCSI_MLQUEUE_DEVICE_BUSY; } cmdinfo->state &= ~SUBMIT_CMD_URB; + cmdinfo->state |= COMMAND_INFLIGHT; } return 0; @@ -494,8 +562,9 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, cmnd->scsi_done = done; - cmdinfo->state = ALLOC_STATUS_URB | SUBMIT_STATUS_URB | + cmdinfo->state = SUBMIT_STATUS_URB | ALLOC_CMD_URB | SUBMIT_CMD_URB; + cmdinfo->aborted = 0; switch (cmnd->sc_data_direction) { case DMA_FROM_DEVICE: @@ -510,8 +579,7 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, } if (!devinfo->use_streams) { - cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB | - ALLOC_STATUS_URB | SUBMIT_STATUS_URB); + cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB); cmdinfo->stream = 0; } @@ -519,7 +587,6 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, if (err) { /* If we did nothing, give up now */ if (cmdinfo->state & SUBMIT_STATUS_URB) { - usb_free_urb(cmdinfo->status_urb); return SCSI_MLQUEUE_DEVICE_BUSY; } spin_lock(&uas_work_lock); @@ -533,36 +600,66 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, static DEF_SCSI_QCMD(uas_queuecommand) -static int uas_eh_abort_handler(struct scsi_cmnd *cmnd) +static int uas_eh_task_mgmt(struct scsi_cmnd *cmnd, + const char *fname, u8 function) { - struct scsi_device *sdev = cmnd->device; - sdev_printk(KERN_INFO, sdev, "%s tag %d\n", __func__, - cmnd->request->tag); - -/* XXX: Send ABORT TASK Task Management command */ - return FAILED; + struct Scsi_Host *shost = cmnd->device->host; + struct uas_dev_info *devinfo = (void *)shost->hostdata[0]; + u16 tag = 9999; /* FIXME */ + + memset(&devinfo->response, 0, sizeof(devinfo->response)); + if (uas_submit_sense_urb(shost, GFP_NOIO, tag)) { + shost_printk(KERN_INFO, shost, + "%s: %s: submit sense urb failed\n", + __func__, fname); + return FAILED; + } + if (uas_submit_task_urb(cmnd, GFP_NOIO, function, tag)) { + shost_printk(KERN_INFO, shost, + "%s: %s: submit task mgmt urb failed\n", + __func__, fname); + return FAILED; + } + if (0 == usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 3000)) { + shost_printk(KERN_INFO, shost, + "%s: %s timed out\n", __func__, fname); + return FAILED; + } + if (be16_to_cpu(devinfo->response.tag) != tag) { + shost_printk(KERN_INFO, shost, + "%s: %s failed (wrong tag %d/%d)\n", __func__, + fname, be16_to_cpu(devinfo->response.tag), tag); + return FAILED; + } + if (devinfo->response.response_code != RC_TMF_COMPLETE) { + shost_printk(KERN_INFO, shost, + "%s: %s failed (rc 0x%x)\n", __func__, + fname, devinfo->response.response_code); + return FAILED; + } + return SUCCESS; } -static int uas_eh_device_reset_handler(struct scsi_cmnd *cmnd) +static int uas_eh_abort_handler(struct scsi_cmnd *cmnd) { - struct scsi_device *sdev = cmnd->device; - sdev_printk(KERN_INFO, sdev, "%s tag %d\n", __func__, - cmnd->request->tag); + struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp; + int ret; -/* XXX: Send LOGICAL UNIT RESET Task Management command */ - return FAILED; + uas_log_cmd_state(cmnd, __func__); + cmdinfo->aborted = 1; + ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK); + if (cmdinfo->state & DATA_IN_URB_INFLIGHT) + usb_kill_urb(cmdinfo->data_in_urb); + if (cmdinfo->state & DATA_OUT_URB_INFLIGHT) + usb_kill_urb(cmdinfo->data_out_urb); + return ret; } -static int uas_eh_target_reset_handler(struct scsi_cmnd *cmnd) +static int uas_eh_device_reset_handler(struct scsi_cmnd *cmnd) { - struct scsi_device *sdev = cmnd->device; - sdev_printk(KERN_INFO, sdev, "%s tag %d\n", __func__, - cmnd->request->tag); - -/* XXX: Can we reset just the one USB interface? - * Would calling usb_set_interface() have the right effect? - */ - return FAILED; + sdev_printk(KERN_INFO, cmnd->device, "%s\n", __func__); + return uas_eh_task_mgmt(cmnd, "LOGICAL UNIT RESET", + TMF_LOGICAL_UNIT_RESET); } static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd) @@ -570,14 +667,21 @@ static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd) struct scsi_device *sdev = cmnd->device; struct uas_dev_info *devinfo = sdev->hostdata; struct usb_device *udev = devinfo->udev; + int err; - sdev_printk(KERN_INFO, sdev, "%s tag %d\n", __func__, - cmnd->request->tag); + devinfo->resetting = 1; + usb_kill_anchored_urbs(&devinfo->sense_urbs); + usb_kill_anchored_urbs(&devinfo->data_urbs); + err = usb_reset_device(udev); + devinfo->resetting = 0; - if (usb_reset_device(udev)) - return SUCCESS; + if (err) { + shost_printk(KERN_INFO, sdev->host, "%s FAILED\n", __func__); + return FAILED; + } - return FAILED; + shost_printk(KERN_INFO, sdev->host, "%s success\n", __func__); + return SUCCESS; } static int uas_slave_alloc(struct scsi_device *sdev) @@ -602,7 +706,6 @@ static struct scsi_host_template uas_host_template = { .slave_configure = uas_slave_configure, .eh_abort_handler = uas_eh_abort_handler, .eh_device_reset_handler = uas_eh_device_reset_handler, - .eh_target_reset_handler = uas_eh_target_reset_handler, .eh_bus_reset_handler = uas_eh_bus_reset_handler, .can_queue = 65536, /* Is there a limit on the _host_ ? */ .this_id = -1, @@ -722,29 +825,6 @@ static void uas_configure_endpoints(struct uas_dev_info *devinfo) } } -static int uas_alloc_status_urb(struct uas_dev_info *devinfo, - struct Scsi_Host *shost) -{ - if (devinfo->use_streams) { - devinfo->status_urb = NULL; - return 0; - } - - devinfo->status_urb = uas_alloc_sense_urb(devinfo, GFP_KERNEL, - shost, 0); - if (!devinfo->status_urb) - goto err_s_urb; - - if (usb_submit_urb(devinfo->status_urb, GFP_KERNEL)) - goto err_submit_urb; - - return 0; -err_submit_urb: - usb_free_urb(devinfo->status_urb); -err_s_urb: - return -ENOMEM; -} - static void uas_free_streams(struct uas_dev_info *devinfo) { struct usb_device *udev = devinfo->udev; @@ -787,6 +867,9 @@ static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id) devinfo->intf = intf; devinfo->udev = udev; + devinfo->resetting = 0; + init_usb_anchor(&devinfo->sense_urbs); + init_usb_anchor(&devinfo->data_urbs); uas_configure_endpoints(devinfo); result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 2); @@ -799,17 +882,10 @@ static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id) shost->hostdata[0] = (unsigned long)devinfo; - result = uas_alloc_status_urb(devinfo, shost); - if (result) - goto err_alloc_status; - scsi_scan_host(shost); usb_set_intfdata(intf, shost); return result; -err_alloc_status: - scsi_remove_host(shost); - shost = NULL; deconfig_eps: uas_free_streams(devinfo); free: @@ -837,8 +913,8 @@ static void uas_disconnect(struct usb_interface *intf) struct uas_dev_info *devinfo = (void *)shost->hostdata[0]; scsi_remove_host(shost); - usb_kill_urb(devinfo->status_urb); - usb_free_urb(devinfo->status_urb); + usb_kill_anchored_urbs(&devinfo->sense_urbs); + usb_kill_anchored_urbs(&devinfo->data_urbs); uas_free_streams(devinfo); kfree(devinfo); } |