From d445913ce0ab7f8e96dfb471ea7ab5c5f648f518 Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Thu, 15 May 2014 12:17:29 +0200 Subject: [PATCH] usb: ehci-orion: add optional PHY support This commit extends the ehci-orion so that it can optionally be passed a reference to a PHY through the Device Tree. It will be useful for the Armada 375 SoCs. If no PHY is provided then the behavior of the driver is unchanged. [Thomas: use devm_phy_optional_get() so that we handle -EPROBE_DEFER properly. Also call phy_power_off() when needed, and rename goto labels.] Signed-off-by: Gregory CLEMENT Signed-off-by: Thomas Petazzoni Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-orion.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 9c98bac0a5bc..22e15cab8ea5 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -46,6 +47,7 @@ struct orion_ehci_hcd { struct clk *clk; + struct phy *phy; }; static const char hcd_name[] = "ehci-orion"; @@ -221,6 +223,20 @@ static int ehci_orion_drv_probe(struct platform_device *pdev) if (!IS_ERR(priv->clk)) clk_prepare_enable(priv->clk); + priv->phy = devm_phy_optional_get(&pdev->dev, "usb"); + if (IS_ERR(priv->phy)) { + err = PTR_ERR(priv->phy); + goto err_phy_get; + } else { + err = phy_init(priv->phy); + if (err) + goto err_phy_init; + + err = phy_power_on(priv->phy); + if (err) + goto err_phy_power_on; + } + /* * (Re-)program MBUS remapping windows if we are asked to. */ @@ -256,6 +272,13 @@ static int ehci_orion_drv_probe(struct platform_device *pdev) return 0; err_add_hcd: + if (!IS_ERR(priv->phy)) + phy_power_off(priv->phy); +err_phy_power_on: + if (!IS_ERR(priv->phy)) + phy_exit(priv->phy); +err_phy_init: +err_phy_get: if (!IS_ERR(priv->clk)) clk_disable_unprepare(priv->clk); usb_put_hcd(hcd); @@ -273,6 +296,11 @@ static int ehci_orion_drv_remove(struct platform_device *pdev) usb_remove_hcd(hcd); + if (!IS_ERR(priv->phy)) { + phy_power_off(priv->phy); + phy_exit(priv->phy); + } + if (!IS_ERR(priv->clk)) clk_disable_unprepare(priv->clk);