From cac18ecb6f44b11bc303d7afbae3887b27938fa4 Mon Sep 17 00:00:00 2001 From: Randy Li Date: Sat, 10 Sep 2016 02:59:37 +0800 Subject: phy: Add reset callback The only use for this is for solving a hardware design problem in usb of Rockchip RK3288. Signed-off-by: Randy Li Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-core.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/phy/phy-core.c') diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 8eca906b6e70..a268f4d6f3e9 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -357,6 +357,21 @@ int phy_set_mode(struct phy *phy, enum phy_mode mode) } EXPORT_SYMBOL_GPL(phy_set_mode); +int phy_reset(struct phy *phy) +{ + int ret; + + if (!phy || !phy->ops->reset) + return 0; + + mutex_lock(&phy->mutex); + ret = phy->ops->reset(phy); + mutex_unlock(&phy->mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(phy_reset); + /** * _of_phy_get() - lookup and obtain a reference to a phy by phandle * @np: device_node for which to get the phy -- cgit v1.2.3