Kernel as received from Digi for their Wi-Mx51 SoC running on their

CCWMX51JS carrier board.

1 files changed, 160 insertions, 0 deletions

diff --git a/arch/arm/mach-mx51/usb_dr.c b/arch/arm/mach-mx51/usb_dr.c
new file mode 100644
index 000000000000..b3eb7d645e34
--- /dev/null
+++ b/arch/arm/mach-mx51/usb_dr.c
@@ -0,0 +1,160 @@
+/*
+ * 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/clk.h>
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+#include <mach/arc_otg.h>
+#include "usb.h"
+
+static int usbotg_init_ext(struct platform_device *pdev);
+static void usbotg_uninit_ext(struct fsl_usb2_platform_data *pdata);
+static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable);
+
+/*
+ * platform data structs
+ * 	- Which one to use is determined by CONFIG options in usb.h
+ * 	- operating_mode plugged at run time
+ */
+static struct fsl_usb2_platform_data __maybe_unused dr_utmi_config = {
+	.name              = "DR",
+	.platform_init     = usbotg_init_ext,
+	.platform_uninit   = usbotg_uninit_ext,
+	.phy_mode          = FSL_USB2_PHY_UTMI_WIDE,
+	.power_budget      = 500,		/* 500 mA max power */
+	.gpio_usb_active   = gpio_usbotg_hs_active,
+	.gpio_usb_inactive = gpio_usbotg_hs_inactive,
+	.wake_up_enable = _wake_up_enable,
+	.transceiver       = "utmi",
+};
+
+
+/*
+ * resources
+ */
+static struct resource otg_resources[] = {
+	[0] = {
+		.start = (u32)(USB_OTGREGS_BASE),
+		.end   = (u32)(USB_OTGREGS_BASE + 0x1ff),
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = MXC_INT_USB_OTG,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+
+static u64 dr_udc_dmamask = ~(u32) 0;
+static void dr_udc_release(struct device *dev)
+{
+}
+
+static u64 dr_otg_dmamask = ~(u32) 0;
+static void dr_otg_release(struct device *dev)
+{
+}
+
+/*
+ * platform device structs
+ * 	dev.platform_data field plugged at run time
+ */
+static struct platform_device dr_udc_device = {
+	.name = "fsl-usb2-udc",
+	.id   = -1,
+	.dev  = {
+		.release           = dr_udc_release,
+		.dma_mask          = &dr_udc_dmamask,
+		.coherent_dma_mask = 0xffffffff,
+	},
+	.resource      = otg_resources,
+	.num_resources = ARRAY_SIZE(otg_resources),
+};
+
+static struct platform_device __maybe_unused dr_otg_device = {
+	.name = "fsl-usb2-otg",
+	.id = -1,
+	.dev = {
+		.release           = dr_otg_release,
+		.dma_mask          = &dr_otg_dmamask,
+		.coherent_dma_mask = 0xffffffff,
+	},
+	.resource      = otg_resources,
+	.num_resources = ARRAY_SIZE(otg_resources),
+};
+
+/* Notes: configure USB clock*/
+static int usbotg_init_ext(struct platform_device *pdev)
+{
+	struct clk *usb_clk;
+
+	usb_clk = clk_get(NULL, "usboh3_clk");
+	clk_enable(usb_clk);
+	clk_put(usb_clk);
+
+	usb_clk = clk_get(NULL, "usb_phy_clk");
+	clk_enable(usb_clk);
+	clk_put(usb_clk);
+
+	/*derive clock from oscillator */
+	usb_clk = clk_get(NULL, "usb_utmi_clk");
+	clk_disable(usb_clk);
+	clk_put(usb_clk);
+
+	return usbotg_init(pdev);
+}
+
+static void usbotg_uninit_ext(struct fsl_usb2_platform_data *pdata)
+{
+	struct clk *usb_clk;
+
+	usb_clk = clk_get(NULL, "usboh3_clk");
+	clk_disable(usb_clk);
+	clk_put(usb_clk);
+
+	usb_clk = clk_get(NULL, "usb_phy_clk");
+	clk_disable(usb_clk);
+	clk_put(usb_clk);
+
+	usbotg_uninit(pdata);
+}
+
+static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable)
+{
+	if (get_usb_mode(pdata) == FSL_USB_DR_DEVICE) {
+		if (enable) {
+			USBCTRL |= UCTRL_OWIE;
+			USBCTRL_HOST2 |= UCTRL_H2OVBWK_EN;
+			USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_CONF2;
+		} else {
+			USBCTRL &= ~UCTRL_OWIE;
+			USBCTRL_HOST2 &= ~UCTRL_H2OVBWK_EN;
+			USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_CONF2;
+		}
+	}
+}
+
+static int __init usb_dr_init(void)
+{
+	pr_debug("%s: \n", __func__);
+
+	dr_register_otg();
+	dr_register_host(otg_resources, ARRAY_SIZE(otg_resources));
+	dr_register_udc();
+
+	return 0;
+}
+
+module_init(usb_dr_init);