1 files changed, 36 insertions, 0 deletions

diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 2460f0d82990..17e4ceb5014d 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -37,6 +37,7 @@
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
 #include <plat/usb.h>
 
 /*
@@ -178,6 +179,11 @@ struct ehci_hcd_omap {
 	void __iomem		*uhh_base;
 	void __iomem		*tll_base;
 	void __iomem		*ehci_base;
+
+	/* Regulators for USB PHYs.
+	 * Each PHY can have a seperate regulator.
+	 */
+	struct regulator        *regulator[OMAP3_HS_USB_PORTS];
 };
 
 /*-------------------------------------------------------------------------*/
@@ -546,6 +552,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
 
 	int irq = platform_get_irq(pdev, 0);
 	int ret = -ENODEV;
+	int i;
+	char supply[7];
 
 	if (!pdata) {
 		dev_dbg(&pdev->dev, "missing platform_data\n");
@@ -613,6 +621,21 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
 		goto err_tll_ioremap;
 	}
 
+	/* get ehci regulator and enable */
+	for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+		if (omap->port_mode[i] != EHCI_HCD_OMAP_MODE_PHY) {
+			omap->regulator[i] = NULL;
+			continue;
+		}
+		snprintf(supply, sizeof(supply), "hsusb%d", i);
+		omap->regulator[i] = regulator_get(omap->dev, supply);
+		if (IS_ERR(omap->regulator[i]))
+			dev_dbg(&pdev->dev,
+			"failed to get ehci port%d regulator\n", i);
+		else
+			regulator_enable(omap->regulator[i]);
+	}
+
 	ret = omap_start_ehc(omap, hcd);
 	if (ret) {
 		dev_dbg(&pdev->dev, "failed to start ehci\n");
@@ -641,6 +664,12 @@ err_add_hcd:
 	omap_stop_ehc(omap, hcd);
 
 err_start:
+	for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+		if (omap->regulator[i]) {
+			regulator_disable(omap->regulator[i]);
+			regulator_put(omap->regulator[i]);
+		}
+	}
 	iounmap(omap->tll_base);
 
 err_tll_ioremap:
@@ -674,10 +703,17 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev)
 {
 	struct ehci_hcd_omap *omap = platform_get_drvdata(pdev);
 	struct usb_hcd *hcd = ehci_to_hcd(omap->ehci);
+	int i;
 
 	usb_remove_hcd(hcd);
 	omap_stop_ehc(omap, hcd);
 	iounmap(hcd->regs);
+	for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+		if (omap->regulator[i]) {
+			regulator_disable(omap->regulator[i]);
+			regulator_put(omap->regulator[i]);
+		}
+	}
 	iounmap(omap->tll_base);
 	iounmap(omap->uhh_base);
 	usb_put_hcd(hcd);