From mboxrd@z Thu Jan 1 00:00:00 1970 From: Randy Li Subject: [PATCH 1/4] phy: Add reset callback Date: Thu, 8 Sep 2016 22:27:13 +0800 Message-ID: <1473344836-26707-2-git-send-email-ayaka@soulik.info> References: <1473344836-26707-1-git-send-email-ayaka@soulik.info> Return-path: In-Reply-To: <1473344836-26707-1-git-send-email-ayaka@soulik.info> Sender: linux-kernel-owner@vger.kernel.org To: linux-usb@vger.kernel.org Cc: John.Youn@synopsys.com, kishon@ti.com, felipe.balbi@linux.intel.com, mark.rutland@arm.com, devicetree@vger.kernel.org, heiko@sntech.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, robh+dt@kernel.org, randy.li@rock-chips.com, Randy Li List-Id: devicetree@vger.kernel.org The only use for this is for solving a hardware design problem in usb of Rockchip RK3288. Signed-off-by: Randy Li --- drivers/phy/phy-core.c | 14 ++++++++++++++ include/linux/phy/phy.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 8eca906..32e838d 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -357,6 +357,20 @@ 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 diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index f08b672..7978df6 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -36,6 +36,7 @@ enum phy_mode { * @power_on: powering on the phy * @power_off: powering off the phy * @set_mode: set the mode of the phy + * @reset: reseting the phy * @owner: the module owner containing the ops */ struct phy_ops { @@ -44,6 +45,7 @@ struct phy_ops { int (*power_on)(struct phy *phy); int (*power_off)(struct phy *phy); int (*set_mode)(struct phy *phy, enum phy_mode mode); + int (*reset)(struct phy *phy); struct module *owner; }; @@ -136,6 +138,7 @@ int phy_exit(struct phy *phy); int phy_power_on(struct phy *phy); int phy_power_off(struct phy *phy); int phy_set_mode(struct phy *phy, enum phy_mode mode); +int phy_reset(struct phy *phy); static inline int phy_get_bus_width(struct phy *phy) { return phy->attrs.bus_width; -- 2.7.4