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authorAndrew Lunn <andrew@lunn.ch>2016-01-06 22:11:26 +0300
committerDavid S. Miller <davem@davemloft.net>2016-01-07 22:31:27 +0300
commita9049e0c513c4521dbfaa302af8ed08b3366b41f (patch)
treec7791b09aee213f8241f366aa9b88c270803ebf9 /include/linux/mdio.h
parentf89df3f381f1e1247ddccdf178f203c06fddf5ce (diff)
downloadlinux-a9049e0c513c4521dbfaa302af8ed08b3366b41f.tar.xz
mdio: Add support for mdio drivers.
Not all devices on an MDIO bus are PHYs. Meaning not all MDIO drivers are PHY drivers. Add support for generic MDIO drivers. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/mdio.h')
-rw-r--r--include/linux/mdio.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 0690359e55a5..75f7fad0af4f 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -15,6 +15,7 @@ struct mii_bus;
struct mdio_device {
struct device dev;
+
const struct dev_pm_ops *pm_ops;
struct mii_bus *bus;
int (*bus_match)(struct device *dev, struct device_driver *drv);
@@ -24,7 +25,37 @@ struct mdio_device {
};
#define to_mdio_device(d) container_of(d, struct mdio_device, dev)
+/* struct mdio_driver_common: Common to all MDIO drivers */
+struct mdio_driver_common {
+ struct device_driver driver;
+ int flags;
+};
#define MDIO_DEVICE_FLAG_PHY 1
+#define to_mdio_common_driver(d) \
+ container_of(d, struct mdio_driver_common, driver)
+
+/* struct mdio_driver: Generic MDIO driver */
+struct mdio_driver {
+ struct mdio_driver_common mdiodrv;
+
+ /*
+ * Called during discovery. Used to set
+ * up device-specific structures, if any
+ */
+ int (*probe)(struct mdio_device *mdiodev);
+
+ /* Clears up any memory if needed */
+ void (*remove)(struct mdio_device *mdiodev);
+};
+#define to_mdio_driver(d) \
+ container_of(to_mdio_common_driver(d), struct mdio_driver, mdiodrv)
+
+void mdio_device_free(struct mdio_device *mdiodev);
+struct mdio_device *mdio_device_create(struct mii_bus *bus, int addr);
+int mdio_device_register(struct mdio_device *mdiodev);
+void mdio_device_remove(struct mdio_device *mdiodev);
+int mdio_driver_register(struct mdio_driver *drv);
+void mdio_driver_unregister(struct mdio_driver *drv);
static inline bool mdio_phy_id_is_c45(int phy_id)
{
@@ -197,4 +228,23 @@ int mdiobus_unregister_device(struct mdio_device *mdiodev);
bool mdiobus_is_registered_device(struct mii_bus *bus, int addr);
struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr);
+/**
+ * module_mdio_driver() - Helper macro for registering mdio drivers
+ *
+ * Helper macro for MDIO drivers which do not do anything special in module
+ * init/exit. Each module may only use this macro once, and calling it
+ * replaces module_init() and module_exit().
+ */
+#define mdio_module_driver(_mdio_driver) \
+static int __init mdio_module_init(void) \
+{ \
+ return mdio_driver_register(&_mdio_driver); \
+} \
+module_init(mdio_module_init); \
+static void __exit mdio_module_exit(void) \
+{ \
+ mdio_driver_unregister(&_mdio_driver); \
+} \
+module_exit(mdio_module_exit)
+
#endif /* __LINUX_MDIO_H__ */