138 lines
3.5 KiB
Diff
138 lines
3.5 KiB
Diff
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
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index 6ee7ef7..14c1f35 100644
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--- a/drivers/usb/host/ehci-tegra.c
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+++ b/drivers/usb/host/ehci-tegra.c
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@@ -322,33 +322,6 @@ static void tegra_ehci_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
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free_dma_aligned_buffer(urb);
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}
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-static int setup_vbus_gpio(struct platform_device *pdev,
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- struct tegra_ehci_platform_data *pdata)
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-{
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- int err = 0;
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- int gpio;
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-
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- gpio = pdata->vbus_gpio;
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- if (!gpio_is_valid(gpio))
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- gpio = of_get_named_gpio(pdev->dev.of_node,
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- "nvidia,vbus-gpio", 0);
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- if (!gpio_is_valid(gpio))
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- return 0;
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-
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- err = gpio_request(gpio, "vbus_gpio");
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- if (err) {
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- dev_err(&pdev->dev, "can't request vbus gpio %d", gpio);
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- return err;
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- }
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- err = gpio_direction_output(gpio, 1);
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- if (err) {
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- dev_err(&pdev->dev, "can't enable vbus\n");
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- return err;
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- }
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-
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- return err;
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-}
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-
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static int tegra_ehci_probe(struct platform_device *pdev)
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{
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struct resource *res;
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@@ -376,14 +349,11 @@ static int tegra_ehci_probe(struct platform_device *pdev)
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if (!pdev->dev.coherent_dma_mask)
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pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
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- setup_vbus_gpio(pdev, pdata);
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-
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hcd = usb_create_hcd(&tegra_ehci_hc_driver, &pdev->dev,
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dev_name(&pdev->dev));
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if (!hcd) {
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dev_err(&pdev->dev, "Unable to create HCD\n");
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- err = -ENOMEM;
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- goto cleanup_vbus_gpio;
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+ return -ENOMEM;
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}
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platform_set_drvdata(pdev, hcd);
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ehci = hcd_to_ehci(hcd);
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@@ -494,8 +464,6 @@ cleanup_clk_get:
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clk_put(tegra->clk);
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cleanup_hcd_create:
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usb_put_hcd(hcd);
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-cleanup_vbus_gpio:
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- /* FIXME: Undo setup_vbus_gpio() here */
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return err;
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}
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diff --git a/drivers/usb/phy/phy-tegra-usb.c b/drivers/usb/phy/phy-tegra-usb.c
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index cec0855..b3b4809 100644
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--- a/drivers/usb/phy/phy-tegra-usb.c
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+++ b/drivers/usb/phy/phy-tegra-usb.c
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@@ -34,6 +34,7 @@
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#include <asm/mach-types.h>
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#include <linux/usb/ehci_def.h>
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#include <linux/usb/tegra_usb_phy.h>
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+#include <linux/regulator/consumer.h>
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#define ULPI_VIEWPORT 0x170
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@@ -237,12 +238,24 @@ static int utmip_pad_open(struct tegra_usb_phy *phy)
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return PTR_ERR(phy->pad_clk);
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}
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+ phy->vbus = devm_regulator_get(phy->dev, "vbus");
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+ /* On some boards, the VBUS regulator doesn't need to be controlled */
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+ if (IS_ERR(phy->vbus)) {
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+ if (PTR_ERR(phy->vbus) == -ENODEV) {
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+ dev_notice(phy->dev, "no vbus regulator");
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+ phy->vbus = NULL;
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+ } else {
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+ return PTR_ERR(phy->vbus);
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+ }
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+ }
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+
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return 0;
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}
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static void utmip_pad_power_on(struct tegra_usb_phy *phy)
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{
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unsigned long val, flags;
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+ int err;
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void __iomem *base = phy->pad_regs;
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clk_prepare_enable(phy->pad_clk);
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@@ -258,6 +271,14 @@ static void utmip_pad_power_on(struct tegra_usb_phy *phy)
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spin_unlock_irqrestore(&utmip_pad_lock, flags);
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clk_disable_unprepare(phy->pad_clk);
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+
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+ if (phy->vbus) {
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+ err = regulator_enable(phy->vbus);
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+ if (err)
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+ dev_err(phy->dev,
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+ "failed to enable usb vbus regulator: %d\n",
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+ err);
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+ }
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}
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static int utmip_pad_power_off(struct tegra_usb_phy *phy)
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@@ -284,6 +305,9 @@ static int utmip_pad_power_off(struct tegra_usb_phy *phy)
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clk_disable_unprepare(phy->pad_clk);
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+ if (phy->vbus)
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+ regulator_disable(phy->vbus);
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+
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return 0;
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}
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diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h
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index d2ca919..2b5fa94 100644
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--- a/include/linux/usb/tegra_usb_phy.h
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+++ b/include/linux/usb/tegra_usb_phy.h
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@@ -55,6 +55,7 @@ struct tegra_usb_phy {
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struct clk *clk;
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struct clk *pll_u;
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struct clk *pad_clk;
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+ struct regulator *vbus;
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enum tegra_usb_phy_mode mode;
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void *config;
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struct usb_phy *ulpi;
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