Introduce device_mdiobus_register() to register mdiobus
in cases of either DT or ACPI.
Signed-off-by: Calvin Johnson <calvin.johnson@xxxxxxxxxxx>
---
Changes in v6:
- change device_mdiobus_register() parameter position
- improve documentation
Changes in v5:
- add description
- clean up if else
Changes in v4: None
Changes in v3: None
Changes in v2: None
drivers/net/phy/mdio_bus.c | 26 ++++++++++++++++++++++++++
include/linux/mdio.h | 1 +
2 files changed, 27 insertions(+)
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 46b33701ad4b..8610f938f81f 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -501,6 +501,32 @@ static int mdiobus_create_device(struct mii_bus *bus,
return ret;
}
+/**
+ * device_mdiobus_register - register mdiobus for either DT or ACPI
+ * @bus: target mii_bus
+ * @dev: given MDIO device
+ *
+ * Description: Given an MDIO device and target mii bus, this function
+ * calls of_mdiobus_register() for DT node and mdiobus_register() in
+ * case of ACPI.
+ *
+ * Returns 0 on success or negative error code on failure.
+ */
+int device_mdiobus_register(struct device *dev,
+ struct mii_bus *bus)
+{
+ struct fwnode_handle *fwnode = dev_fwnode(dev);
+
+ if (is_of_node(fwnode))
+ return of_mdiobus_register(bus, to_of_node(fwnode));
+ if (fwnode) {
+ bus->dev.fwnode = fwnode;
+ return mdiobus_register(bus);
+ }
+ return -ENODEV;
+}
+EXPORT_SYMBOL(device_mdiobus_register);
+
/**
* __mdiobus_register - bring up all the PHYs on a given bus and attach them to bus
* @bus: target mii_bus
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 898cbf00332a..f454c5435101 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -358,6 +358,7 @@ static inline int mdiobus_c45_read(struct mii_bus *bus, int prtad, int devad,
return mdiobus_read(bus, prtad, mdiobus_c45_addr(devad, regnum));
}
+int device_mdiobus_register(struct device *dev, struct mii_bus *bus);
int mdiobus_register_device(struct mdio_device *mdiodev);
int mdiobus_unregister_device(struct mdio_device *mdiodev);
bool mdiobus_is_registered_device(struct mii_bus *bus, int addr);
--
2.17.1
