lkml.org 
[lkml]   [2016]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 47/51] phy: Add reset callback
    Date
    From: Randy Li <ayaka@soulik.info>

    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>
    ---
    drivers/phy/phy-core.c | 15 +++++++++++++++
    include/linux/phy/phy.h | 3 +++
    2 files changed, 18 insertions(+)

    diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
    index 8eca906..a268f4d 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
    diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
    index f08b672..ee1bed7 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: resetting 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;
    --
    1.7.9.5
    \
     
     \ /
      Last update: 2016-09-17 09:59    [W:3.516 / U:0.564 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site