/* * 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,} }; module_phy_driver(am79c_driver); static struct mdio_device_id __maybe_unused amd_tbl[] = {	{ PHY_ID_AM79C874, 0xfffffff0 },	{ }}; MODULE_DEVICE_TABLE(mdio, amd_tbl);