From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Porter Subject: [PATCH v6 1/9] phy: add phy_get_bus_width()/phy_set_bus_width() calls Date: Fri, 13 Dec 2013 11:51:15 -0500 Message-ID: <1386953483-21631-2-git-send-email-mporter@linaro.org> References: <1386953483-21631-1-git-send-email-mporter@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1386953483-21631-1-git-send-email-mporter@linaro.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Felipe Balbi , Greg Kroah-Hartman , Kishon Vijay Abraham I , Rob Herring , Pawel Moll , Mark Rutland , Kumar Gala , Ian Campbell , Christian Daudt , Paul Zimmerman Cc: Devicetree List , Kamil Debski , Dinh Nguyen , Linaro Patches , Tomasz Figa , Linux USB List , Linux Kernel Mailing List , Kyungmin Park , Russell King , Linux ARM Kernel List List-Id: devicetree@vger.kernel.org This adds a pair of APIs that allows the generic PHY subsystem to provide information on the PHY bus width. The PHY provider driver may use phy_set_bus_width() to set the bus width that the PHY supports. The controller driver may then use phy_get_bus_width() to fetch the PHY bus width in order to properly configure the controller. Signed-off-by: Matt Porter Acked-by: Kishon Vijay Abraham I --- include/linux/phy/phy.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 6d72269..e273e5a 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -38,6 +38,14 @@ struct phy_ops { }; /** + * struct phy_attrs - represents phy attributes + * @bus_width: Data path width implemented by PHY + */ +struct phy_attrs { + u32 bus_width; +}; + +/** * struct phy - represents the phy device * @dev: phy device * @id: id of the phy device @@ -46,6 +54,7 @@ struct phy_ops { * @mutex: mutex to protect phy_ops * @init_count: used to protect when the PHY is used by multiple consumers * @power_count: used to protect when the PHY is used by multiple consumers + * @phy_attrs: used to specify PHY specific attributes */ struct phy { struct device dev; @@ -55,6 +64,7 @@ struct phy { struct mutex mutex; int init_count; int power_count; + struct phy_attrs attrs; }; /** @@ -127,6 +137,14 @@ 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); +static inline int phy_get_bus_width(struct phy *phy) +{ + return phy->attrs.bus_width; +} +static inline void phy_set_bus_width(struct phy *phy, int bus_width) +{ + phy->attrs.bus_width = bus_width; +} struct phy *phy_get(struct device *dev, const char *string); struct phy *devm_phy_get(struct device *dev, const char *string); void phy_put(struct phy *phy); @@ -199,6 +217,16 @@ static inline int phy_power_off(struct phy *phy) return -ENOSYS; } +static inline int phy_get_bus_width(struct phy *phy) +{ + return -ENOSYS; +} + +static inline void phy_set_bus_width(struct phy *phy, int bus_width) +{ + return; +} + static inline struct phy *phy_get(struct device *dev, const char *string) { return ERR_PTR(-ENOSYS); -- 1.8.4