/* * drivers/net/phy/davicom.c * * Driver for Davicom PHYs * * Author: Andy Fleming * * Copyright (c) 2004 Freescale Semiconductor, Inc. * * 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/string.h>#include <linux/errno.h>#include <linux/unistd.h>#include <linux/slab.h>#include <linux/interrupt.h>#include <linux/init.h>#include <linux/delay.h>#include <linux/netdevice.h>#include <linux/etherdevice.h>#include <linux/skbuff.h>#include <linux/spinlock.h>#include <linux/mm.h>#include <linux/module.h>#include <linux/mii.h>#include <linux/ethtool.h>#include <linux/phy.h>#include <asm/io.h>#include <asm/irq.h>#include <asm/uaccess.h>#define MII_DM9161_SCR		0x10#define MII_DM9161_SCR_INIT	0x0610/* DM9161 Interrupt Register */#define MII_DM9161_INTR	0x15#define MII_DM9161_INTR_PEND		0x8000#define MII_DM9161_INTR_DPLX_MASK	0x0800#define MII_DM9161_INTR_SPD_MASK	0x0400#define MII_DM9161_INTR_LINK_MASK	0x0200#define MII_DM9161_INTR_MASK		0x0100#define MII_DM9161_INTR_DPLX_CHANGE	0x0010#define MII_DM9161_INTR_SPD_CHANGE	0x0008#define MII_DM9161_INTR_LINK_CHANGE	0x0004#define MII_DM9161_INTR_INIT 		0x0000#define MII_DM9161_INTR_STOP	\(MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \ | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK)/* DM9161 10BT Configuration/Status */#define MII_DM9161_10BTCSR	0x12#define MII_DM9161_10BTCSR_INIT	0x7800MODULE_DESCRIPTION("Davicom PHY driver");MODULE_AUTHOR("Andy Fleming");MODULE_LICENSE("GPL");#define DM9161_DELAY 1static int dm9161_config_intr(struct phy_device *phydev){	int temp;	temp = phy_read(phydev, MII_DM9161_INTR);	if (temp < 0)		return temp;	if(PHY_INTERRUPT_ENABLED == phydev->interrupts )		temp &= ~(MII_DM9161_INTR_STOP);	else		temp |= MII_DM9161_INTR_STOP;	temp = phy_write(phydev, MII_DM9161_INTR, temp);	return temp;}static int dm9161_config_aneg(struct phy_device *phydev){	int err;	/* Isolate the PHY */	err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);	if (err < 0)		return err;	/* Configure the new settings */	err = genphy_config_aneg(phydev);	if (err < 0)		return err;	return 0;}static int dm9161_config_init(struct phy_device *phydev){	int err;	/* Isolate the PHY */	err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);	if (err < 0)		return err;	/* Do not bypass the scrambler/descrambler */	err = phy_write(phydev, MII_DM9161_SCR, MII_DM9161_SCR_INIT);	if (err < 0)		return err;	/* Clear 10BTCSR to default */	err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT);	if (err < 0)		return err;	/* Reconnect the PHY, and enable Autonegotiation */	err = phy_write(phydev, MII_BMCR, BMCR_ANENABLE);	if (err < 0)		return err;	return 0;}static int dm9161_ack_interrupt(struct phy_device *phydev){	int err = phy_read(phydev, MII_DM9161_INTR);	return (err < 0) ? err : 0;}static struct phy_driver dm9161e_driver = {	.phy_id		= 0x0181b880,	.name		= "Davicom DM9161E",	.phy_id_mask	= 0x0ffffff0,	.features	= PHY_BASIC_FEATURES,	.config_init	= dm9161_config_init,	.config_aneg	= dm9161_config_aneg,	.read_status	= genphy_read_status,	.driver		= { .owner = THIS_MODULE,},};static struct phy_driver dm9161a_driver = {	.phy_id		= 0x0181b8a0,	.name		= "Davicom DM9161A",	.phy_id_mask	= 0x0ffffff0,	.features	= PHY_BASIC_FEATURES,	.config_init	= dm9161_config_init,	.config_aneg	= dm9161_config_aneg,	.read_status	= genphy_read_status,	.driver		= { .owner = THIS_MODULE,},};static struct phy_driver dm9131_driver = {	.phy_id		= 0x00181b80,	.name		= "Davicom DM9131",	.phy_id_mask	= 0x0ffffff0,	.features	= PHY_BASIC_FEATURES,	.flags		= PHY_HAS_INTERRUPT,	.config_aneg	= genphy_config_aneg,	.read_status	= genphy_read_status,	.ack_interrupt	= dm9161_ack_interrupt,	.config_intr	= dm9161_config_intr,	.driver		= { .owner = THIS_MODULE,},};static int __init davicom_init(void){	int ret;	ret = phy_driver_register(&dm9161e_driver);	if (ret)		goto err1;	ret = phy_driver_register(&dm9161a_driver);	if (ret)		goto err2;	ret = phy_driver_register(&dm9131_driver);	if (ret)		goto err3;	return 0; err3:	phy_driver_unregister(&dm9161a_driver); err2:	phy_driver_unregister(&dm9161e_driver); err1:	return ret;}static void __exit davicom_exit(void){	phy_driver_unregister(&dm9161e_driver);	phy_driver_unregister(&dm9161a_driver);	phy_driver_unregister(&dm9131_driver);}module_init(davicom_init);module_exit(davicom_exit);