From 46c1cda88c6e669965e00d6557cc5231fcef91d5 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Mon, 29 Sep 2014 11:54:14 +0530 Subject: [PATCH] usb: host: ehci-exynos: Remove unnecessary usb-phy support Now that we have completely moved from older USB-PHY drivers to newer GENERIC-PHY drivers for PHYs available with USB controllers on Exynos series of SoCs, we can remove the support for the same in our host drivers too. We also defer the probe for our host in case we end up getting EPROBE_DEFER error when getting PHYs. Signed-off-by: Vivek Gautam Acked-by: Jingoo Han Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-exynos.c | 74 +++++++++------------------------- 1 file changed, 20 insertions(+), 54 deletions(-) diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index 2eed9a4f89a9..7189f2e32ac2 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -21,11 +21,8 @@ #include #include #include -#include -#include #include #include -#include #include "ehci.h" @@ -47,9 +44,7 @@ static struct hc_driver __read_mostly exynos_ehci_hc_driver; struct exynos_ehci_hcd { struct clk *clk; - struct usb_phy *phy; - struct usb_otg *otg; - struct phy *phy_g[PHY_NUMBER]; + struct phy *phy[PHY_NUMBER]; }; #define to_exynos_ehci(hcd) (struct exynos_ehci_hcd *)(hcd_to_ehci(hcd)->priv) @@ -60,8 +55,9 @@ static int exynos_ehci_get_phy(struct device *dev, struct device_node *child; struct phy *phy; int phy_number; - int ret = 0; + int ret; + /* Get PHYs for the controller */ for_each_available_child_of_node(dev->of_node, child) { ret = of_property_read_u32(child, "reg", &phy_number); if (ret) { @@ -77,31 +73,21 @@ static int exynos_ehci_get_phy(struct device *dev, } phy = devm_of_phy_get(dev, child, NULL); + exynos_ehci->phy[phy_number] = phy; of_node_put(child); - if (IS_ERR(phy)) - /* Lets fallback to older USB-PHYs */ - goto usb_phy_old; - exynos_ehci->phy_g[phy_number] = phy; - /* Make the older PHYs unavailable */ - exynos_ehci->phy = ERR_PTR(-ENXIO); - } - - return 0; - -usb_phy_old: - exynos_ehci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - if (IS_ERR(exynos_ehci->phy)) { - ret = PTR_ERR(exynos_ehci->phy); - if (ret != -ENXIO && ret != -ENODEV) { - dev_err(dev, "no usb2 phy configured\n"); - return ret; + if (IS_ERR(phy)) { + ret = PTR_ERR(phy); + if (ret == -EPROBE_DEFER) { + return ret; + } else if (ret != -ENOSYS && ret != -ENODEV) { + dev_err(dev, + "Error retrieving usb2 phy: %d\n", ret); + return ret; + } } - dev_dbg(dev, "Failed to get usb2 phy\n"); - } else { - exynos_ehci->otg = exynos_ehci->phy->otg; } - return ret; + return 0; } static int exynos_ehci_phy_enable(struct device *dev) @@ -111,16 +97,13 @@ static int exynos_ehci_phy_enable(struct device *dev) int i; int ret = 0; - if (!IS_ERR(exynos_ehci->phy)) - return usb_phy_init(exynos_ehci->phy); - for (i = 0; ret == 0 && i < PHY_NUMBER; i++) - if (!IS_ERR(exynos_ehci->phy_g[i])) - ret = phy_power_on(exynos_ehci->phy_g[i]); + if (!IS_ERR(exynos_ehci->phy[i])) + ret = phy_power_on(exynos_ehci->phy[i]); if (ret) for (i--; i >= 0; i--) - if (!IS_ERR(exynos_ehci->phy_g[i])) - phy_power_off(exynos_ehci->phy_g[i]); + if (!IS_ERR(exynos_ehci->phy[i])) + phy_power_off(exynos_ehci->phy[i]); return ret; } @@ -131,14 +114,9 @@ static void exynos_ehci_phy_disable(struct device *dev) struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd); int i; - if (!IS_ERR(exynos_ehci->phy)) { - usb_phy_shutdown(exynos_ehci->phy); - return; - } - for (i = 0; i < PHY_NUMBER; i++) - if (!IS_ERR(exynos_ehci->phy_g[i])) - phy_power_off(exynos_ehci->phy_g[i]); + if (!IS_ERR(exynos_ehci->phy[i])) + phy_power_off(exynos_ehci->phy[i]); } static void exynos_setup_vbus_gpio(struct device *dev) @@ -231,9 +209,6 @@ skip_phy: goto fail_io; } - if (exynos_ehci->otg) - exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); - err = exynos_ehci_phy_enable(&pdev->dev); if (err) { dev_err(&pdev->dev, "Failed to enable USB phy\n"); @@ -273,9 +248,6 @@ static int exynos_ehci_remove(struct platform_device *pdev) usb_remove_hcd(hcd); - if (exynos_ehci->otg) - exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); - exynos_ehci_phy_disable(&pdev->dev); clk_disable_unprepare(exynos_ehci->clk); @@ -298,9 +270,6 @@ static int exynos_ehci_suspend(struct device *dev) if (rc) return rc; - if (exynos_ehci->otg) - exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); - exynos_ehci_phy_disable(dev); clk_disable_unprepare(exynos_ehci->clk); @@ -316,9 +285,6 @@ static int exynos_ehci_resume(struct device *dev) clk_prepare_enable(exynos_ehci->clk); - if (exynos_ehci->otg) - exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); - ret = exynos_ehci_phy_enable(dev); if (ret) { dev_err(dev, "Failed to enable USB phy\n"); -- 2.39.5