net/mdio/acpi_mdio.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * ACPI helpers for the MDIO (Ethernet PHY) API
19 MODULE_DESCRIPTION("ACPI MDIO bus (Ethernet PHY) accessors");
22  * __acpi_mdiobus_register - Register mii_bus and create PHYs from the ACPI ASL.
23  * @mdio: pointer to mii_bus structure
24  * @fwnode: pointer to fwnode of MDIO bus. This fwnode is expected to represent
25  * @owner: module owning this @mdio object.
26  * an ACPI device object corresponding to the MDIO bus and its children are
27  * expected to correspond to the PHY devices on that bus.
32 int __acpi_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode,  in __acpi_mdiobus_register()  argument
40 	mdio->phy_mask = GENMASK(31, 0);  in __acpi_mdiobus_register()
41 	ret = __mdiobus_register(mdio, owner);  in __acpi_mdiobus_register()
45 	ACPI_COMPANION_SET(&mdio->dev, to_acpi_device_node(fwnode));  in __acpi_mdiobus_register()
53 		ret = fwnode_mdiobus_register_phy(mdio, child, addr);  in __acpi_mdiobus_register()
54 		if (ret == -ENODEV)  in __acpi_mdiobus_register()
55 			dev_err(&mdio->dev,  in __acpi_mdiobus_register()
56 				"MDIO device at address %d is missing.\n",  in __acpi_mdiobus_register()