/* * Driver for AMD am79c PHYs * * Author: Heiko Schocher <hs@denx.de> * * Copyright (c) 2011 DENX Software Engineering GmbH * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/module.h> #include <linux/mii.h> #include <linux/phy.h> #define PHY_ID_AM79C874 0x0022561b #define MII_AM79C_IR 17 /* Interrupt Status/Control Register */ #define MII_AM79C_IR_EN_LINK 0x0400 /* IR enable Linkstate */ #define MII_AM79C_IR_EN_ANEG 0x0100 /* IR enable Aneg Complete */ #define MII_AM79C_IR_IMASK_INIT (MII_AM79C_IR_EN_LINK | MII_AM79C_IR_EN_ANEG) MODULE_DESCRIPTION("AMD PHY driver"); MODULE_AUTHOR("Heiko Schocher <hs@denx.de>"); MODULE_LICENSE("GPL"); static int am79c_ack_interrupt(struct phy_device *phydev) { int err; err = phy_read(phydev, MII_BMSR); if (err < 0) return err; err = phy_read(phydev, MII_AM79C_IR); if (err < 0) return err; return 0; } static int am79c_config_init(struct phy_device *phydev) { return 0; } static int am79c_config_intr(struct phy_device *phydev) { int err; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) err = phy_write(phydev, MII_AM79C_IR, MII_AM79C_IR_IMASK_INIT); else err = phy_write(phydev, MII_AM79C_IR, 0); return err; } static struct phy_driver am79c_driver = { .phy_id = PHY_ID_AM79C874, .name = "AM79C874", .phy_id_mask = 0xfffffff0, .features = PHY_BASIC_FEATURES, .flags = PHY_HAS_INTERRUPT, .config_init = am79c_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = am79c_ack_interrupt, .config_intr = am79c_config_intr, .driver = { .owner = THIS_MODULE,}, }; static int __init am79c_init(void) { return phy_driver_register(&am79c_driver); } static void __exit am79c_exit(void) { phy_driver_unregister(&am79c_driver); } module_init(am79c_init); module_exit(am79c_exit); static struct mdio_device_id __maybe_unused amd_tbl[] = { { PHY_ID_AM79C874, 0xfffffff0 }, { } }; MODULE_DEVICE_TABLE(mdio, amd_tbl);