[net-next PATCH v7 2/6] net: phy: introduce device_mdiobus_register()
From: Calvin Johnson <hidden>
Date: 2020-07-15 09:04:42
Also in:
linux-acpi
Subsystem:
ethernet phy library, networking drivers, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Introduce device_mdiobus_register() to register mdiobus in cases of either DT or ACPI. Signed-off-by: Calvin Johnson <redacted> --- Changes in v7: None 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