ENGR00121651 MX53: Add support for USB

Move USB initialization to be board specific functions and add USB
support for MX53. Renamed USB phy clocks to usb_phy1_clk and
usb_phy2_clk to distinguish between different PHY clocks for USB.

Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Jun Li <r65092@freescale.com>

arch/arm/mach-mx5/clock.c

@@ -2747,7 +2747,7 @@ static int _clk_usb_phy_set_parent(struct clk *clk, struct clk *parent)
 
 static struct clk usb_phy_clk[] = {
 	{
-	.name = "usb_phy_clk",
+	.name = "usb_phy1_clk",
 	.id = 0,
 	.parent = &pll3_sw_clk,
 	.secondary = &tmax3_clk,
@@ -2759,7 +2759,7 @@ static struct clk usb_phy_clk[] = {
 	.disable = _clk_disable,
 	},
 	{
-	.name = "usb_phy_clk",
+	.name = "usb_phy2_clk",
 	.id = 1,
 	.parent = &pll3_sw_clk,
 	.secondary = &tmax3_clk,

arch/arm/mach-mx5/mx51_3stack.c

@@ -946,8 +946,8 @@ static void __init mxc_board_init(void)
 	mxc_register_device(&mxc_bt_device, &mxc_bt_data);
 	mxc_register_device(&mxc_gps_device, &gps_data);
 
-	mx51_usb_dr_init();
-	mx51_usbh1_init();
+	mx5_usb_dr_init();
+	mx5_usbh1_init();
 
 	/* Setup Touchscreen interrupt */
 	gpio_request(IOMUX_TO_GPIO(MX51_PIN_GPIO1_5), "gpio1_5");

arch/arm/mach-mx5/mx51_babbage.c

@@ -953,8 +953,8 @@ static void __init mxc_board_init(void)
 	gpio_direction_output(IOMUX_TO_GPIO(MX51_PIN_EIM_A23), 0);
 	mxc_register_device(&mxc_sgtl5000_device, &sgtl5000_data);
 
-	mx51_usb_dr_init();
-	mx51_usbh1_init();
+	mx5_usb_dr_init();
+	mx5_usbh1_init();
 }
 
 static void __init mx51_babbage_timer_init(void)

arch/arm/mach-mx5/mx53_evk.c

@@ -573,6 +573,8 @@ static void __init mxc_board_init(void)
 	*/
 
 	mxc_register_device(&mxc_sgtl5000_device, &sgtl5000_data);
+	mx5_usb_dr_init();
+	mx5_usbh1_init();
 }
 
 static void __init mx53_evk_timer_init(void)

arch/arm/mach-mx5/usb.h

@@ -26,9 +26,9 @@ extern void fsl_usb_host_uninit(struct fsl_usb2_platform_data *pdata);
 extern int gpio_usbotg_utmi_active(void);
 extern void gpio_usbotg_utmi_inactive(void);
 
-extern void __init mx51_usb_dr_init(void);
-extern void __init mx51_usbh1_init(void);
-extern void __init mx51_usbh2_init(void);
+extern void __init mx5_usb_dr_init(void);
+extern void __init mx5_usbh1_init(void);
+extern void __init mx5_usbh2_init(void);
 
 /*
  * Used to set pdata->operating_mode before registering the platform_device.

arch/arm/mach-mx5/usb_dr.c

@@ -52,7 +52,7 @@ static int usbotg_init_ext(struct platform_device *pdev)
 	clk_enable(usb_clk);
 	clk_put(usb_clk);
 
-	usb_clk = clk_get(NULL, "usb_phy_clk");
+	usb_clk = clk_get(&pdev->dev, "usb_phy1_clk");
 	clk_enable(usb_clk);
 	clk_put(usb_clk);
 
@@ -72,7 +72,7 @@ static void usbotg_uninit_ext(struct fsl_usb2_platform_data *pdata)
 	clk_disable(usb_clk);
 	clk_put(usb_clk);
 
-	usb_clk = clk_get(NULL, "usb_phy_clk");
+	usb_clk = clk_get(&pdata->pdev->dev, "usb_phy1_clk");
 	clk_disable(usb_clk);
 	clk_put(usb_clk);
 
@@ -115,7 +115,7 @@ static void usbotg_clock_gate(bool on)
 		clk_enable(usb_clk);
 		clk_put(usb_clk);
 
-		usb_clk = clk_get(NULL, "usb_phy_clk");
+		usb_clk = clk_get(NULL, "usb_phy1_clk");
 		clk_enable(usb_clk);
 		clk_put(usb_clk);
 
@@ -128,7 +128,7 @@ static void usbotg_clock_gate(bool on)
 		clk_disable(usb_clk);
 		clk_put(usb_clk);
 
-		usb_clk = clk_get(NULL, "usb_phy_clk");
+		usb_clk = clk_get(NULL, "usb_phy1_clk");
 		clk_disable(usb_clk);
 		clk_put(usb_clk);
 
@@ -138,7 +138,7 @@ static void usbotg_clock_gate(bool on)
 	}
 }
 
-void __init mx51_usb_dr_init(void)
+void __init mx5_usb_dr_init(void)
 {
 #ifdef CONFIG_USB_OTG
 	dr_utmi_config.operating_mode = FSL_USB2_DR_OTG;

arch/arm/mach-mx5/usb_h1.c

@@ -22,6 +22,7 @@
 #include <asm/mach/arch.h>
 #include "usb.h"
 #include "iomux.h"
+#include "mx51_pins.h"
 
 
 /*
@@ -92,40 +93,80 @@ static void usbotg_clock_gate(bool on)
 
 static int fsl_usb_host_init_ext(struct platform_device *pdev)
 {
-	int ret = fsl_usb_host_init(pdev);
+	int ret;
+	struct clk *usb_clk;
+
+	if (cpu_is_mx53()) {
+		usb_clk = clk_get(NULL, "usboh3_clk");
+		clk_enable(usb_clk);
+		clk_put(usb_clk);
+
+		usb_clk = clk_get(&pdev->dev, "usb_phy2_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);
+	}
+
+	ret = fsl_usb_host_init(pdev);
 	if (ret)
 		return ret;
 
-	/* 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));
+	if (cpu_is_mx51()) {
+		/* 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));
+	}
 
 	/* disable remote wakeup irq */
 	USBCTRL &= ~UCTRL_H1WIE;
 	return 0;
 }
 
+static void fsl_usb_host_uninit_ext(struct fsl_usb2_platform_data *pdata)
+{
+	struct clk *usb_clk;
+
+	if (cpu_is_mx53()) {
+		usb_clk = clk_get(NULL, "usboh3_clk");
+		clk_disable(usb_clk);
+		clk_put(usb_clk);
+
+		usb_clk = clk_get(&pdata->pdev->dev, "usb_phy2_clk");
+		clk_disable(usb_clk);
+		clk_put(usb_clk);
+	}
+	fsl_usb_host_uninit(pdata);
+}
+
 static struct fsl_usb2_platform_data usbh1_config = {
 	.name = "Host 1",
 	.platform_init = fsl_usb_host_init_ext,
-	.platform_uninit = fsl_usb_host_uninit,
+	.platform_uninit = fsl_usb_host_uninit_ext,
 	.operating_mode = FSL_USB2_MPH_HOST,
-	.phy_mode = FSL_USB2_PHY_ULPI,
+	.phy_mode = FSL_USB2_PHY_UTMI_WIDE,
 	.power_budget = 500,	/* 500 mA max power */
-	.gpio_usb_active = gpio_usbh1_active,
-	.gpio_usb_inactive = gpio_usbh1_inactive,
 	.wake_up_enable = _wake_up_enable,
 	.usb_clock_for_pm  = usbotg_clock_gate,
-	.transceiver = "isp1504",
+	.transceiver = "utmi",
 };
 
-void __init mx51_usbh1_init(void)
+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;
+	}
 	mxc_register_device(&mxc_usbh1_device, &usbh1_config);
 }
 

arch/arm/mach-mx5/usb_h2.c

@@ -19,6 +19,7 @@
 #include <mach/arc_otg.h>
 #include "usb.h"
 #include "iomux.h"
+#include "mx51_pins.h"
 
 /*
  * USB Host2 HS port

arch/arm/plat-mxc/include/mach/arc_otg.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2005-2010 Freescale Semiconductor, Inc. All Rights Reserved.
  */
 
 /*
@@ -145,6 +145,8 @@
 #define USB_CTRL_1		USBOTHER_REG(0x10)	/* USB Cotrol Register 1*/
 #define USBCTRL_HOST2		USBOTHER_REG(0x14)	/* USB Cotrol Register 1*/
 #define USBCTRL_HOST3		USBOTHER_REG(0x18)	/* USB Cotrol Register 1*/
+#define USBH1_PHY_CTRL0		USBOTHER_REG(0x1c)	/* USB Cotrol Register 1*/
+#define USBH1_PHY_CTRL1		USBOTHER_REG(0x20)	/* USB Cotrol Register 1*/
 
 /*
  * register bits

arch/arm/plat-mxc/usb_common.c

@@ -261,6 +261,68 @@ static void usbh1_set_ulpi_xcvr(void)
 	/* Turn off the usbpll for ulpi tranceivers */
 	clk_disable(usb_clk);
 }
+
+static void usbh1_set_utmi_xcvr(void)
+{
+	u32 tmp;
+
+	/* Stop then Reset */
+	UH1_USBCMD &= ~UCMD_RUN_STOP;
+	while (UH1_USBCMD & UCMD_RUN_STOP)
+		;
+
+	UH1_USBCMD |= UCMD_RESET;
+	while ((UH1_USBCMD) & (UCMD_RESET))
+		;
+
+	/* MX53 EVK is not using OC */
+	USB_PHY_CTR_FUNC |= USB_UH1_OC_DIS;
+
+	USBCTRL &= ~UCTRL_H1PM;	/* OTG Power Mask */
+	USBCTRL &= ~UCTRL_H1WIE;	/* OTG Wakeup Intr Disable */
+
+	/* Over current disable */
+	USB_PHY_CTR_FUNC |= (0x1 << 5);
+
+	/* set UTMI xcvr */
+	tmp = UH1_PORTSC1 & ~PORTSC_PTS_MASK;
+	tmp |= PORTSC_PTS_UTMI;
+	UH1_PORTSC1 = tmp;
+
+	/* Set the PHY clock to 19.2MHz */
+	USBH1_PHY_CTRL1 &= ~USB_UTMI_PHYCTRL2_PLLDIV_MASK;
+	USBH1_PHY_CTRL1 |= 0x01;
+
+	/* Workaround an IC issue for ehci driver:
+	 * when turn off root hub port power, EHCI set
+	 * PORTSC reserved bits to be 0, but PTW with 0
+	 * means 8 bits tranceiver width, here change
+	 * it back to be 16 bits and do PHY diable and
+	 * then enable.
+	 */
+	UH1_PORTSC1 |= PORTSC_PTW;
+
+	/* need to reset the controller here so that the ID pin
+	 * is correctly detected.
+	 */
+	/* Stop then Reset */
+	UH1_USBCMD &= ~UCMD_RUN_STOP;
+	while (UH1_USBCMD & UCMD_RUN_STOP)
+		;
+
+	UH1_USBCMD |= UCMD_RESET;
+	while ((UH1_USBCMD) & (UCMD_RESET))
+		;
+
+	/* allow controller to reset, and leave time for
+	 * the ULPI transceiver to reset too.
+	 */
+	msleep(100);
+
+	/* Turn off the usbpll for UTMI tranceivers */
+	clk_disable(usb_clk);
+}
+
 static void usbh2_set_ulpi_xcvr(void)
 {
 	u32 tmp;
@@ -410,7 +472,7 @@ int fsl_usb_host_init(struct platform_device *pdev)
 		return -EINVAL;
 
 	pr_debug("%s: grab pins\n", __func__);
-	if (pdata->gpio_usb_active())
+	if (pdata->gpio_usb_active && pdata->gpio_usb_active())
 		return -EINVAL;
 
 	if (clk_enable(usb_clk)) {
@@ -452,6 +514,8 @@ int fsl_usb_host_init(struct platform_device *pdev)
 			usbh1_set_ulpi_xcvr();
 		if (!strcmp("Host 2", pdata->name))
 			usbh2_set_ulpi_xcvr();
+	} else if (xops->xcvr_type == PORTSC_PTS_UTMI) {
+		usbh1_set_utmi_xcvr();
 	}
 
 	pr_debug("%s: %s success\n", __func__, pdata->name);
@@ -468,7 +532,8 @@ void fsl_usb_host_uninit(struct fsl_usb2_platform_data *pdata)
 
 	pdata->regs = NULL;
 
-	pdata->gpio_usb_inactive();
+	if (pdata->gpio_usb_inactive)
+		pdata->gpio_usb_inactive();
 	if (pdata->xcvr_type == PORTSC_PTS_SERIAL) {
 		/* Workaround an IC issue for ehci driver.
 		 * when turn off root hub port power, EHCI set
@@ -624,6 +689,9 @@ static void otg_set_utmi_xcvr(void)
 	UOG_USBCMD |= UCMD_RESET;
 	while ((UOG_USBCMD) & (UCMD_RESET)) ;
 
+	if (cpu_is_mx53())
+		USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_OC_DIS;
+
 	if (cpu_is_mx51()) {
 		if (machine_is_mx51_3ds()) {
 			/* OTG Polarity of Overcurrent is Low active */
@@ -648,7 +716,8 @@ static void otg_set_utmi_xcvr(void)
 			USBCTRL |= UCTRL_OLOCKD;
 	}
 
-	USBCTRL &= ~UCTRL_OPM;	/* OTG Power Mask */
+	if (!cpu_is_mx53())
+		USBCTRL &= ~UCTRL_OPM;	/* OTG Power Mask */
 	USBCTRL &= ~UCTRL_OWIE;	/* OTG Wakeup Intr Disable */
 
 	/* set UTMI xcvr */
@@ -730,7 +799,7 @@ int usbotg_init(struct platform_device *pdev)
 			return -EINVAL;
 
 		pr_debug("%s: grab pins\n", __func__);
-		if (pdata->gpio_usb_active())
+		if (pdata->gpio_usb_active && pdata->gpio_usb_active())
 			return -EINVAL;
 
 		if (clk_enable(usb_clk)) {
@@ -785,7 +854,8 @@ void usbotg_uninit(struct fsl_usb2_platform_data *pdata)
 		}
 		msleep(1);
 		UOG_PORTSC1 = UOG_PORTSC1 | PORTSC_PHCD;
-		pdata->gpio_usb_inactive();
+		if (pdata->gpio_usb_inactive)
+			pdata->gpio_usb_inactive();
 		if (pdata->xcvr_type == PORTSC_PTS_SERIAL)
 			clk_disable(usb_clk);
 		clk_disable(usb_ahb_clk);