[net-next PATCH v1 4/7] net: mdiobus: Introduce fwnode_mdiobus_register_phy()
From: Calvin Johnson <hidden>
Date: 2020-09-30 16:06:09
Also in:
linux-acpi, linux-arm-kernel, lkml
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 fwnode_mdiobus_register_phy() to register PHYs on the mdiobus. From the compatible string, identify whether the PHY is c45 and based on this create a PHY device instance which is registered on the mdiobus. Signed-off-by: Calvin Johnson <redacted> --- drivers/net/phy/mdio_bus.c | 40 ++++++++++++++++++++++++++++++++++++++ include/linux/mdio.h | 2 ++ 2 files changed, 42 insertions(+)
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 0af20faad69d..693eb752cbf7 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c@@ -106,6 +106,46 @@ int mdiobus_unregister_device(struct mdio_device *mdiodev) } EXPORT_SYMBOL(mdiobus_unregister_device); +int fwnode_mdiobus_register_phy(struct mii_bus *bus, + struct fwnode_handle *child, u32 addr) +{ + struct phy_device *phy; + bool is_c45; + const char *cp; + u32 phy_id; + int rc; + + rc = fwnode_property_read_string(child, "compatible", &cp); + is_c45 = !(rc || strcmp(cp, "ethernet-phy-ieee802.3-c45")); + + if (is_c45 || fwnode_get_phy_id(child, &phy_id)) + phy = get_phy_device(bus, addr, is_c45); + else + phy = phy_device_create(bus, addr, phy_id, 0, NULL); + if (IS_ERR(phy)) + return PTR_ERR(phy); + + phy->irq = bus->irq[addr]; + + /* Associate the fwnode with the device structure so it + * can be looked up later. + */ + phy->mdio.dev.fwnode = child; + + /* All data is now stored in the phy struct, so register it */ + rc = phy_device_register(phy); + if (rc) { + phy_device_free(phy); + fwnode_handle_put(phy->mdio.dev.fwnode); + return rc; + } + + dev_dbg(&bus->dev, "registered phy at address %i\n", addr); + + return 0; +} +EXPORT_SYMBOL(fwnode_mdiobus_register_phy); + struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr) { struct mdio_device *mdiodev = bus->mdio_map[addr];
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index dbd69b3d170b..f138ec333725 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h@@ -368,6 +368,8 @@ 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); struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr); +int fwnode_mdiobus_register_phy(struct mii_bus *bus, + struct fwnode_handle *child, u32 addr); /** * mdio_module_driver() - Helper macro for registering mdio drivers
--
2.17.1