From 081554dca90cdc59d6ca64f83125e741078ea0d9 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Thu, 29 Sep 2016 11:40:30 +0200 Subject: phy: Introduce to_usbphy conversion function The generic phy support layer has the necessary list handling and phy retrieval functions, so we should reuse them for usb phys. This adds a phy_to_usbphy() conversion function which drivers can implement which attach to the generic phy layer and are really usb phys. Signed-off-by: Sascha Hauer --- drivers/phy/phy-core.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/phy/phy-core.c') diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 7c1f3d440b..1b6a9f7b1d 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -15,6 +15,7 @@ #include #include #include +#include static LIST_HEAD(phy_provider_list); static int phy_ida; @@ -201,6 +202,17 @@ int phy_power_off(struct phy *phy) return 0; } +struct usb_phy *phy_to_usbphy(struct phy *phy) +{ + if (!phy) + return NULL; + + if (!phy->ops->to_usbphy) + return ERR_PTR(-EINVAL); + + return phy->ops->to_usbphy(phy); +} + static struct phy_provider *of_phy_provider_lookup(struct device_node *node) { struct phy_provider *phy_provider; -- cgit v1.2.3