This patch adds function set_rate to the generic PHY framework operation structure. This function can be called to instruct the PHY underlying layer at specified lane to configure for specified rate. Signed-off-by: Loc Ho <lho@xxxxxxx> Signed-off-by: Suman Tripathi <stripathi@xxxxxxx> --- drivers/phy/phy-core.c | 27 +++++++++++++++++++++++++++ include/linux/phy/phy.h | 8 ++++++++ 2 files changed, 35 insertions(+) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 645c867..51f82e0 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -258,6 +258,33 @@ int phy_power_off(struct phy *phy) EXPORT_SYMBOL_GPL(phy_power_off); /** + * phy_set_rate - set an specified lane at an specified rate + * @phy: phy instance to be set + * @lane: zero-based lane index + * @rate: operating rate in bps (bits per second) + * + * Returns 0 if successful, -ENOTSUPP if not supported + * -EINVAL if parameter out of range. + */ +int phy_set_rate(struct phy *phy, int lane, u64 rate) +{ + int ret = 0; + + mutex_lock(&phy->mutex); + if (phy->ops->set_rate) { + ret = phy->ops->set_rate(phy, lane, rate); + if (ret < 0) { + dev_err(&phy->dev, "phy set rate failed --> %d\n", + ret); + } + } + mutex_unlock(&phy->mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(phy_set_rate); + +/** * of_phy_get() - lookup and obtain a reference to a phy by phandle * @dev: device that requests this phy * @index: the index of the phy diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e273e5a..2dfcb34 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -27,6 +27,7 @@ struct phy; * @exit: operation to be performed while exiting * @power_on: powering on the phy * @power_off: powering off the phy + * @set_rate: set the rate * @owner: the module owner containing the ops */ struct phy_ops { @@ -34,6 +35,7 @@ struct phy_ops { int (*exit)(struct phy *phy); int (*power_on)(struct phy *phy); int (*power_off)(struct phy *phy); + int (*set_rate)(struct phy *phy, int lane, u64 rate); struct module *owner; }; @@ -137,6 +139,7 @@ int phy_init(struct phy *phy); int phy_exit(struct phy *phy); int phy_power_on(struct phy *phy); int phy_power_off(struct phy *phy); +int phy_set_rate(struct phy *phy, int lane, u64 rate); static inline int phy_get_bus_width(struct phy *phy) { return phy->attrs.bus_width; @@ -217,6 +220,11 @@ static inline int phy_power_off(struct phy *phy) return -ENOSYS; } +static inline int phy_set_rate(struct phy *phy, int lane, u64 rate) +{ + return -ENOSYS; +} + static inline int phy_get_bus_width(struct phy *phy) { return -ENOSYS; -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html