diff options
Diffstat (limited to 'arch/arm/mach-mx51/usb_h1.c')
-rw-r--r-- | arch/arm/mach-mx51/usb_h1.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/arch/arm/mach-mx51/usb_h1.c b/arch/arm/mach-mx51/usb_h1.c new file mode 100644 index 000000000000..869ec45f0726 --- /dev/null +++ b/arch/arm/mach-mx51/usb_h1.c @@ -0,0 +1,114 @@ +/* + * Copyright 2005-2009 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * 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/kernel.h> +#include <linux/types.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/fsl_devices.h> +#include <mach/arc_otg.h> +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include "usb.h" +#include "iomux.h" + + +/* + * USB Host1 HS port + */ +static int gpio_usbh1_active(void) +{ + /* Set USBH1_STP to GPIO and toggle it */ + mxc_request_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_GPIO | + IOMUX_CONFIG_SION); + gpio_request(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP), "usbh1_stp"); + gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP), 0); + gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP), 1); + + /* Signal only used on MX51-3DS for reset to PHY.*/ + if (machine_is_mx51_3ds()) { + mxc_request_iomux(MX51_PIN_EIM_D17, IOMUX_CONFIG_ALT1); + mxc_iomux_set_pad(MX51_PIN_EIM_D17, PAD_CTL_DRV_HIGH | + PAD_CTL_HYS_NONE | PAD_CTL_PUE_KEEPER | + PAD_CTL_100K_PU | PAD_CTL_ODE_OPENDRAIN_NONE | + PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST); + gpio_request(IOMUX_TO_GPIO(MX51_PIN_EIM_D17), "eim_d17"); + gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_D17), 0); + gpio_set_value(IOMUX_TO_GPIO(MX51_PIN_EIM_D17), 1); + } + + msleep(100); + + return 0; +} + +void gpio_usbh1_setback_stp(void) +{ + /* setback USBH1_STP to be function */ + mxc_request_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_ALT0); + mxc_iomux_set_pad(MX51_PIN_USBH1_STP, PAD_CTL_SRE_FAST | + PAD_CTL_DRV_HIGH | PAD_CTL_ODE_OPENDRAIN_NONE | + PAD_CTL_PUE_KEEPER | PAD_CTL_PKE_ENABLE | + PAD_CTL_HYS_ENABLE | PAD_CTL_DDR_INPUT_CMOS | + PAD_CTL_DRV_VOT_LOW); + gpio_free(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP)); +} +EXPORT_SYMBOL(gpio_usbh1_setback_stp); + +static void gpio_usbh1_inactive(void) +{ + /* Signal only used on MX51-3DS for reset to PHY.*/ + if (machine_is_mx51_3ds()) { + gpio_free(IOMUX_TO_GPIO(MX51_PIN_EIM_D17)); + mxc_free_iomux(MX51_PIN_EIM_D17, IOMUX_CONFIG_GPIO); + } + + mxc_free_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_GPIO); + gpio_free(IOMUX_TO_GPIO(MX51_PIN_USBH1_STP)); +} + +static struct fsl_usb2_platform_data usbh1_config = { + .name = "Host 1", + .platform_init = fsl_usb_host_init, + .platform_uninit = fsl_usb_host_uninit, + .operating_mode = FSL_USB2_MPH_HOST, + .phy_mode = FSL_USB2_PHY_ULPI, + .power_budget = 500, /* 500 mA max power */ + .gpio_usb_active = gpio_usbh1_active, + .gpio_usb_inactive = gpio_usbh1_inactive, + .transceiver = "isp1504", +}; + +static struct resource usbh1_resources[] = { + [0] = { + .start = (u32) (USB_H1REGS_BASE), + .end = (u32) (USB_H1REGS_BASE + 0x1ff), + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = MXC_INT_USB_H1, + .flags = IORESOURCE_IRQ, + }, +}; + +static int __init usbh1_init(void) +{ + pr_debug("%s: \n", __func__); + + host_pdev_register(usbh1_resources, + ARRAY_SIZE(usbh1_resources), &usbh1_config); + + return 0; +} + +module_init(usbh1_init); |