From 2db941623d5cf9e421455879393dd1d2e55c65b7 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Mon, 22 Sep 2014 11:16:19 +0530 Subject: [PATCH] usb: host: ohci-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/ohci-exynos.c | 81 +++++++++++------------------------------- 1 file changed, 20 insertions(+), 61 deletions(-) diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index 7c48e3f..d28b658 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -19,11 +19,8 @@ #include #include #include -#include -#include #include #include -#include #include "ohci.h" @@ -38,9 +35,7 @@ static struct hc_driver __read_mostly exynos_ohci_hc_driver; struct exynos_ohci_hcd { struct clk *clk; - struct usb_phy *phy; - struct usb_otg *otg; - struct phy *phy_g[PHY_NUMBER]; + struct phy *phy[PHY_NUMBER]; }; static int exynos_ohci_get_phy(struct device *dev, @@ -49,15 +44,9 @@ static int exynos_ohci_get_phy(struct device *dev, struct device_node *child; struct phy *phy; int phy_number; - int ret = 0; + int ret; - /* - * Getting generic phy: - * We are keeping both types of phys as a part of transiting OHCI - * to generic phy framework, so as to maintain backward compatibilty - * with old DTB too. - * We fallback to older USB-PHYs when we fail to get generic PHYs. - */ + /* 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) { @@ -73,31 +62,21 @@ static int exynos_ohci_get_phy(struct device *dev, } phy = devm_of_phy_get(dev, child, NULL); + exynos_ohci->phy[phy_number] = phy; of_node_put(child); - if (IS_ERR(phy)) - /* Lets fallback to older USB-PHYs */ - goto usb_phy_old; - exynos_ohci->phy_g[phy_number] = phy; - /* Make the older PHYs unavailable */ - exynos_ohci->phy = ERR_PTR(-ENXIO); - } - - return 0; - -usb_phy_old: - exynos_ohci->phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); - if (IS_ERR(exynos_ohci->phy)) { - ret = PTR_ERR(exynos_ohci->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_ohci->otg = exynos_ohci->phy->otg; } - return ret; + return 0; } static int exynos_ohci_phy_enable(struct device *dev) @@ -107,16 +86,13 @@ static int exynos_ohci_phy_enable(struct device *dev) int i; int ret = 0; - if (!IS_ERR(exynos_ohci->phy)) - return usb_phy_init(exynos_ohci->phy); - for (i = 0; ret == 0 && i < PHY_NUMBER; i++) - if (!IS_ERR(exynos_ohci->phy_g[i])) - ret = phy_power_on(exynos_ohci->phy_g[i]); + if (!IS_ERR(exynos_ohci->phy[i])) + ret = phy_power_on(exynos_ohci->phy[i]); if (ret) for (i--; i >= 0; i--) - if (!IS_ERR(exynos_ohci->phy_g[i])) - phy_power_off(exynos_ohci->phy_g[i]); + if (!IS_ERR(exynos_ohci->phy[i])) + phy_power_off(exynos_ohci->phy[i]); return ret; } @@ -127,14 +103,9 @@ static void exynos_ohci_phy_disable(struct device *dev) struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd); int i; - if (!IS_ERR(exynos_ohci->phy)) { - usb_phy_shutdown(exynos_ohci->phy); - return; - } - for (i = 0; i < PHY_NUMBER; i++) - if (!IS_ERR(exynos_ohci->phy_g[i])) - phy_power_off(exynos_ohci->phy_g[i]); + if (!IS_ERR(exynos_ohci->phy[i])) + phy_power_off(exynos_ohci->phy[i]); } static int exynos_ohci_probe(struct platform_device *pdev) @@ -206,9 +177,6 @@ skip_phy: goto fail_io; } - if (exynos_ohci->otg) - exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self); - platform_set_drvdata(pdev, hcd); err = exynos_ohci_phy_enable(&pdev->dev); @@ -241,9 +209,6 @@ static int exynos_ohci_remove(struct platform_device *pdev) usb_remove_hcd(hcd); - if (exynos_ohci->otg) - exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self); - exynos_ohci_phy_disable(&pdev->dev); clk_disable_unprepare(exynos_ohci->clk); @@ -272,9 +237,6 @@ static int exynos_ohci_suspend(struct device *dev) if (rc) return rc; - if (exynos_ohci->otg) - exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self); - exynos_ohci_phy_disable(dev); clk_disable_unprepare(exynos_ohci->clk); @@ -290,9 +252,6 @@ static int exynos_ohci_resume(struct device *dev) clk_prepare_enable(exynos_ohci->clk); - if (exynos_ohci->otg) - exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self); - ret = exynos_ohci_phy_enable(dev); if (ret) { dev_err(dev, "Failed to enable USB phy\n"); -- 2.7.4