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authorRandy Li <ayaka@soulik.info>2016-09-10 02:59:37 +0800
committerKishon Vijay Abraham I <kishon@ti.com>2016-09-10 17:31:39 +0530
commitcac18ecb6f44b11bc303d7afbae3887b27938fa4 (patch)
treef630b7ff27947281512d4112834fca0a7bf6b8d3 /drivers/phy/phy-core.c
parent91d6e3b6bcf2625a07fec22a9af37ddbfd91a0df (diff)
downloadlinux-cac18ecb6f44b11bc303d7afbae3887b27938fa4.tar.bz2
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 <ayaka@soulik.info> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy/phy-core.c')
-rw-r--r--drivers/phy/phy-core.c15
1 files changed, 15 insertions, 0 deletions
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