1 files changed, 47 insertions, 1 deletions

diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 7e96bb2..41088ec 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -25,6 +25,7 @@
 #include <linux/clk.h>
 #include <linux/dma-mapping.h>
 #include <linux/spinlock.h>
+#include <linux/gpio.h>
 #include <plat/cpu.h>
 #include <plat/usb.h>
 #include <linux/pm_runtime.h>
@@ -500,8 +501,21 @@ static void omap_usbhs_init(struct device *dev)
 	dev_dbg(dev, "starting TI HSUSB Controller\n");
 
 	pm_runtime_get_sync(dev);
-	spin_lock_irqsave(&omap->lock, flags);
 
+	if (pdata->ehci_data->phy_reset) {
+		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
+			gpio_request_one(pdata->ehci_data->reset_gpio_port[0],
+					 GPIOF_OUT_INIT_LOW, "USB1 PHY reset");
+
+		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
+			gpio_request_one(pdata->ehci_data->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);
+	}
+
+	spin_lock_irqsave(&omap->lock, flags);
 	omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
 	dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
 
@@ -581,9 +595,39 @@ static void omap_usbhs_init(struct device *dev)
 	}
 
 	spin_unlock_irqrestore(&omap->lock, flags);
+
+	if (pdata->ehci_data->phy_reset) {
+		/* Hold the PHY in RESET for enough time till
+		 * PHY is settled and ready
+		 */
+		udelay(10);
+
+		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
+			gpio_set_value_cansleep
+				(pdata->ehci_data->reset_gpio_port[0], 1);
+
+		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
+			gpio_set_value_cansleep
+				(pdata->ehci_data->reset_gpio_port[1], 1);
+	}
+
 	pm_runtime_put_sync(dev);
 }
 
+static void omap_usbhs_deinit(struct device *dev)
+{
+	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
+	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
+
+	if (pdata->ehci_data->phy_reset) {
+		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
+			gpio_free(pdata->ehci_data->reset_gpio_port[0]);
+
+		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
+			gpio_free(pdata->ehci_data->reset_gpio_port[1]);
+	}
+}
+
 
 /**
  * usbhs_omap_probe - initialize TI-based HCDs
@@ -767,6 +811,7 @@ static int __devinit usbhs_omap_probe(struct platform_device *pdev)
 	goto end_probe;
 
 err_alloc:
+	omap_usbhs_deinit(&pdev->dev);
 	iounmap(omap->tll_base);
 
 err_tll:
@@ -818,6 +863,7 @@ static int __devexit usbhs_omap_remove(struct platform_device *pdev)
 {
 	struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
 
+	omap_usbhs_deinit(&pdev->dev);
 	iounmap(omap->tll_base);
 	iounmap(omap->uhh_base);
 	clk_put(omap->init_60m_fclk);