1 files changed, 300 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/usb_h1.c b/arch/arm/mach-mx5/usb_h1.c
new file mode 100644
index 00000000000..0336b16a133
--- /dev/null
+++ b/arch/arm/mach-mx5/usb_h1.c
@@ -0,0 +1,300 @@
+/*
+ * Copyright (C) 2005-2011 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/clk.h>
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+#include <linux/gpio.h>
+
+#include <asm/delay.h>
+#include <mach/hardware.h>
+#include <mach/arc_otg.h>
+#include <mach/iomux-mx51.h>
+#include <mach/iomux-mx53.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include "usb.h"
+
+static struct clk *usb_phy2_clk;
+static struct clk *usb_oh3_clk;
+static struct clk *usb_ahb_clk;
+extern int clk_get_usecount(struct clk *clk);
+
+#define MX5X_USBH1_STP		IMX_GPIO_NR(1, 27)
+#define MX51_3DS_PHY_RESET	IMX_GPIO_NR(2, 5)
+
+#ifdef CONFIG_USB_EHCI_ARC
+extern void fsl_usb_recover_hcd(struct platform_device *pdev);
+#else
+static void fsl_usb_recover_hcd(struct platform_device *pdev)
+{; }
+#endif
+/*
+ * USB Host1 HS port
+ */
+static int gpio_usbh1_active(void)
+{
+	iomux_v3_cfg_t usbh1stp_gpio = MX51_PAD_USBH1_STP__GPIO1_27;
+	iomux_v3_cfg_t phyreset_gpio = MX51_PAD_EIM_D17__GPIO2_1;
+	int ret;
+
+	/* Set USBH1_STP to GPIO and toggle it */
+	mxc_iomux_v3_setup_pad(usbh1stp_gpio);
+	ret = gpio_request(MX5X_USBH1_STP, "usbh1_stp");
+
+	if (ret) {
+		pr_debug("failed to get MX51_PAD_USBH1_STP__GPIO_1_27: %d\n", ret);
+		return ret;
+	}
+	gpio_direction_output(MX5X_USBH1_STP, 0);
+	gpio_set_value(MX5X_USBH1_STP, 1);
+
+	/* Signal only used on MX51-3DS for reset to PHY.*/
+	if (machine_is_mx51_3ds()) {
+		mxc_iomux_v3_setup_pad(phyreset_gpio);
+		ret = gpio_request(MX51_3DS_PHY_RESET, "eim_d17");
+		if (ret) {
+			pr_debug("failed to get MX51_PAD_EIM_D17__GPIO2_1: %d\n", ret);
+			return ret;
+		}
+		gpio_direction_output(MX51_3DS_PHY_RESET, 0);
+		gpio_set_value(MX51_3DS_PHY_RESET, 1);
+	}
+
+	msleep(100);
+
+	return 0;
+}
+
+static void gpio_usbh1_inactive(void)
+{
+	/* Signal only used on MX51-3DS for reset to PHY.*/
+	if (machine_is_mx51_3ds()) {
+		gpio_free(MX51_3DS_PHY_RESET);
+	}
+	gpio_free(MX5X_USBH1_STP);
+}
+
+
+static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable)
+{
+	pr_debug("host1, %s, enable is %d\n", __func__, enable);
+	if (enable)
+		USBCTRL |= UCTRL_H1WIE;
+	else {
+		USBCTRL &= ~UCTRL_H1WIE;
+		/* The interrupt must be disabled for at least 3
+		* cycles of the standby clock(32k Hz) , that is 0.094 ms*/
+		udelay(100);
+	}
+}
+
+static void _phy_lowpower_suspend(struct fsl_usb2_platform_data *pdata, bool enable)
+{
+	pr_debug("host1, %s, enable is %d\n", __func__, enable);
+	if (enable) {
+		UH1_PORTSC1 |= PORTSC_PHCD;
+	} else {
+		UH1_PORTSC1 &= ~PORTSC_PHCD;
+	}
+}
+
+static void usbh1_clock_gate(bool on)
+{
+	pr_debug("%s: on is %d\n", __func__, on);
+	if (on) {
+		clk_enable(usb_ahb_clk);
+		clk_enable(usb_oh3_clk);
+		clk_enable(usb_phy2_clk);
+	} else {
+		clk_disable(usb_phy2_clk);
+		clk_disable(usb_oh3_clk);
+		clk_disable(usb_ahb_clk);
+	}
+}
+
+static enum usb_wakeup_event _is_usbh1_wakeup(struct fsl_usb2_platform_data *pdata)
+{
+	int wakeup_req = USBCTRL & UCTRL_H1WIR;
+
+	if (wakeup_req)
+		return !WAKEUP_EVENT_INVALID;
+
+	return WAKEUP_EVENT_INVALID;
+}
+
+static void h1_wakeup_handler(struct fsl_usb2_platform_data *pdata)
+{
+	_wake_up_enable(pdata, false);
+	_phy_lowpower_suspend(pdata, false);
+	fsl_usb_recover_hcd(&mxc_usbh1_device);
+}
+
+static void usbh1_wakeup_event_clear(void)
+{
+	int wakeup_req = USBCTRL & UCTRL_H1WIR;
+
+	if (wakeup_req != 0) {
+		printk(KERN_INFO "Unknown wakeup.(OTGSC 0x%x)\n", UOG_OTGSC);
+		/* Disable H1WIE to clear H1WIR, wait 3 clock
+		 * cycles of standly clock(32KHz)
+		 */
+		USBCTRL &= ~UCTRL_H1WIE;
+		udelay(100);
+		USBCTRL |= UCTRL_H1WIE;
+	}
+}
+static int fsl_usb_host_init_ext(struct platform_device *pdev)
+{
+	iomux_v3_cfg_t usbh1stp_func = MX51_PAD_USBH1_STP__USBH1_STP;
+	struct clk *usb_clk;
+	int ret;
+
+	/* the usb_ahb_clk will be enabled in usb_otg_init */
+	usb_ahb_clk = clk_get(NULL, "usb_ahb_clk");
+
+	if (cpu_is_mx53()) {
+		usb_clk = clk_get(NULL, "usboh3_clk");
+		if (usb_clk) {
+			clk_enable(usb_clk);
+			usb_oh3_clk = usb_clk;
+		}
+
+		usb_clk = clk_get(NULL, "usb_phy2_clk");
+		if (usb_clk) {
+			clk_enable(usb_clk);
+			usb_phy2_clk = usb_clk;
+		}
+	} else if (cpu_is_mx50()) {
+		usb_clk = clk_get(NULL, "usb_phy2_clk");
+		if (usb_clk) {
+			clk_enable(usb_clk);
+			usb_phy2_clk = usb_clk;
+		}
+	} else if (cpu_is_mx51()) {
+		usb_clk = clk_get(NULL, "usboh3_clk");
+		if (usb_clk) {
+			clk_enable(usb_clk);
+			usb_oh3_clk = usb_clk;
+		}
+	}
+
+	ret = fsl_usb_host_init(pdev);
+	if (ret)
+		return ret;
+
+	if (cpu_is_mx51()) {
+		/* setback USBH1_STP to be function */
+#if 0	/* Jasper: Need to do... */
+		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));
+#endif
+		mxc_iomux_v3_setup_pad(usbh1stp_func);
+		gpio_free(MX5X_USBH1_STP);
+	}
+
+	/* disable remote wakeup irq */
+	USBCTRL &= ~UCTRL_H1WIE;
+	return 0;
+}
+
+static void fsl_usb_host_uninit_ext(struct platform_device *pdev)
+{
+	struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
+
+	if (cpu_is_mx53()) {
+		if (usb_oh3_clk) {
+			clk_disable(usb_oh3_clk);
+			clk_put(usb_oh3_clk);
+		}
+
+		if (usb_phy2_clk) {
+			clk_disable(usb_phy2_clk);
+			clk_put(usb_phy2_clk);
+		}
+	} else if (cpu_is_mx50()) {
+		if (usb_phy2_clk) {
+			clk_disable(usb_phy2_clk);
+			clk_put(usb_phy2_clk);
+		}
+	} else if (cpu_is_mx51()) {
+		if (usb_oh3_clk) {
+			clk_disable(usb_oh3_clk);
+			clk_put(usb_oh3_clk);
+		}
+	}
+
+	fsl_usb_host_uninit(pdata);
+	/* usb_ahb_clk will be disabled at usb_common.c */
+	clk_put(usb_ahb_clk);
+}
+
+static struct fsl_usb2_platform_data usbh1_config = {
+	.name		= "Host 1",
+	.init		= fsl_usb_host_init_ext,
+	.exit		= fsl_usb_host_uninit_ext,
+	.operating_mode = FSL_USB2_MPH_HOST,
+	.phy_mode = FSL_USB2_PHY_UTMI_WIDE,
+	.power_budget = 500,	/* 500 mA max power */
+	.wake_up_enable = _wake_up_enable,
+	.usb_clock_for_pm  = usbh1_clock_gate,
+	.phy_lowpower_suspend = _phy_lowpower_suspend,
+	.is_wakeup_event = _is_usbh1_wakeup,
+	.wakeup_handler = h1_wakeup_handler,
+	.transceiver = "utmi",
+};
+
+static struct fsl_usb2_wakeup_platform_data usbh1_wakeup_config = {
+		.name = "USBH1 wakeup",
+		.usb_clock_for_pm  = usbh1_clock_gate,
+		.usb_pdata = {&usbh1_config, NULL, NULL},
+		.usb_wakeup_exhandle = usbh1_wakeup_event_clear,
+};
+
+void mx5_set_host1_vbus_func(driver_vbus_func driver_vbus)
+{
+	usbh1_config.platform_driver_vbus = driver_vbus;
+}
+
+#define MX53_OFFSET	0x20000000
+void __init mx5_usbh1_init(void)
+{
+	if (cpu_is_mx51()) {
+		usbh1_config.phy_mode = FSL_USB2_PHY_ULPI;
+		usbh1_config.transceiver = "isp1504";
+		usbh1_config.gpio_usb_active = gpio_usbh1_active;
+		usbh1_config.gpio_usb_inactive = gpio_usbh1_inactive;
+	}
+	if (cpu_is_mx53() || cpu_is_mx50()) {
+		mx53_usbh1_device.resource[0].start	-= MX53_OFFSET;
+		mx53_usbh1_device.resource[0].end	-= MX53_OFFSET;
+	}
+	if (cpu_is_mx53()) {
+		usbh1_config.wakeup_pdata = &usbh1_wakeup_config;
+
+		mx53_usbh1_device.dev.platform_data = &usbh1_config;
+		platform_device_register(&mx53_usbh1_device);
+
+		mx53_usbh1_wakeup_device.dev.platform_data = &usbh1_wakeup_config;
+		platform_device_register(&mx53_usbh1_wakeup_device);
+	}
+}
+