[net-next-2.6.git] / drivers / net / phy / lxt.c

/*
 * drivers/net/phy/lxt.c
 *
 * Driver for Intel LXT 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/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>

/* The Level one LXT970 is used by many boards				     */

#define MII_LXT970_IER       17  /* Interrupt Enable Register */

#define MII_LXT970_IER_IEN	0x0002

#define MII_LXT970_ISR       18  /* Interrupt Status Register */

#define MII_LXT970_CONFIG    19  /* Configuration Register    */

/* ------------------------------------------------------------------------- */
/* The Level one LXT971 is used on some of my custom boards                  */

/* register definitions for the 971 */
#define MII_LXT971_IER		18  /* Interrupt Enable Register */
#define MII_LXT971_IER_IEN	0x00f2

#define MII_LXT971_ISR		19  /* Interrupt Status Register */

/* register definitions for the 973 */
#define MII_LXT973_PCR 16 /* Port Configuration Register */
#define PCR_FIBER_SELECT 1

MODULE_DESCRIPTION("Intel LXT PHY driver");
MODULE_AUTHOR("Andy Fleming");
MODULE_LICENSE("GPL");

static int lxt970_ack_interrupt(struct phy_device *phydev)
{
	int err;

	err = phy_read(phydev, MII_BMSR);

	if (err < 0)
		return err;

	err = phy_read(phydev, MII_LXT970_ISR);

	if (err < 0)
		return err;

	return 0;
}

static int lxt970_config_intr(struct phy_device *phydev)
{
	int err;

	if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
		err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN);
	else
		err = phy_write(phydev, MII_LXT970_IER, 0);

	return err;
}

static int lxt970_config_init(struct phy_device *phydev)
{
	int err;

	err = phy_write(phydev, MII_LXT970_CONFIG, 0);

	return err;
}


static int lxt971_ack_interrupt(struct phy_device *phydev)
{
	int err = phy_read(phydev, MII_LXT971_ISR);

	if (err < 0)
		return err;

	return 0;
}

static int lxt971_config_intr(struct phy_device *phydev)
{
	int err;

	if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
		err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN);
	else
		err = phy_write(phydev, MII_LXT971_IER, 0);

	return err;
}

static int lxt973_probe(struct phy_device *phydev)
{
	int val = phy_read(phydev, MII_LXT973_PCR);

	if (val & PCR_FIBER_SELECT) {
		/*
		 * If fiber is selected, then the only correct setting
		 * is 100Mbps, full duplex, and auto negotiation off.
		 */
		val = phy_read(phydev, MII_BMCR);
		val |= (BMCR_SPEED100 | BMCR_FULLDPLX);
		val &= ~BMCR_ANENABLE;
		phy_write(phydev, MII_BMCR, val);
		/* Remember that the port is in fiber mode. */
		phydev->priv = lxt973_probe;
	} else {
		phydev->priv = NULL;
	}
	return 0;
}

static int lxt973_config_aneg(struct phy_device *phydev)
{
	/* Do nothing if port is in fiber mode. */
	return phydev->priv ? 0 : genphy_config_aneg(phydev);
}

static struct phy_driver lxt970_driver = {
	.phy_id		= 0x78100000,
	.name		= "LXT970",
	.phy_id_mask	= 0xfffffff0,
	.features	= PHY_BASIC_FEATURES,
	.flags		= PHY_HAS_INTERRUPT,
	.config_init	= lxt970_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= lxt970_ack_interrupt,
	.config_intr	= lxt970_config_intr,
	.driver 	= { .owner = THIS_MODULE,},
};

static struct phy_driver lxt971_driver = {
	.phy_id		= 0x001378e0,
	.name		= "LXT971",
	.phy_id_mask	= 0xfffffff0,
	.features	= PHY_BASIC_FEATURES,
	.flags		= PHY_HAS_INTERRUPT,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= lxt971_ack_interrupt,
	.config_intr	= lxt971_config_intr,
	.driver 	= { .owner = THIS_MODULE,},
};

static struct phy_driver lxt973_driver = {
	.phy_id		= 0x00137a10,
	.name		= "LXT973",
	.phy_id_mask	= 0xfffffff0,
	.features	= PHY_BASIC_FEATURES,
	.flags		= 0,
	.probe		= lxt973_probe,
	.config_aneg	= lxt973_config_aneg,
	.read_status	= genphy_read_status,
	.driver 	= { .owner = THIS_MODULE,},
};

static int __init lxt_init(void)
{
	int ret;

	ret = phy_driver_register(&lxt970_driver);
	if (ret)
		goto err1;

	ret = phy_driver_register(&lxt971_driver);
	if (ret)
		goto err2;

	ret = phy_driver_register(&lxt973_driver);
	if (ret)
		goto err3;
	return 0;

 err3:
	phy_driver_unregister(&lxt971_driver);
 err2:
	phy_driver_unregister(&lxt970_driver);
 err1:
	return ret;
}

static void __exit lxt_exit(void)
{
	phy_driver_unregister(&lxt970_driver);
	phy_driver_unregister(&lxt971_driver);
	phy_driver_unregister(&lxt973_driver);
}

module_init(lxt_init);
module_exit(lxt_exit);

static struct mdio_device_id lxt_tbl[] = {
	{ 0x78100000, 0xfffffff0 },
	{ 0x001378e0, 0xfffffff0 },
	{ 0x00137a10, 0xfffffff0 },
	{ }
};

MODULE_DEVICE_TABLE(mdio, lxt_tbl);
Commit	Line	Data
00db8189 AF	1	/*
	2	* drivers/net/phy/lxt.c
	3	*
	4	* Driver for Intel LXT PHYs
	5	*
	6	* Author: Andy Fleming
	7	*
	8	* Copyright (c) 2004 Freescale Semiconductor, Inc.
	9	*
	10	* This program is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by the
	12	* Free Software Foundation; either version 2 of the License, or (at your
	13	* option) any later version.
	14	*
	15	*/
00db8189	16	#include <linux/kernel.h>
00db8189 AF	17	#include <linux/string.h>
	18	#include <linux/errno.h>
	19	#include <linux/unistd.h>
00db8189 AF	20	#include <linux/interrupt.h>
	21	#include <linux/init.h>
	22	#include <linux/delay.h>
	23	#include <linux/netdevice.h>
	24	#include <linux/etherdevice.h>
	25	#include <linux/skbuff.h>
	26	#include <linux/spinlock.h>
	27	#include <linux/mm.h>
	28	#include <linux/module.h>
00db8189 AF	29	#include <linux/mii.h>
	30	#include <linux/ethtool.h>
	31	#include <linux/phy.h>
	32
	33	#include <asm/io.h>
	34	#include <asm/irq.h>
	35	#include <asm/uaccess.h>
	36
	37	/* The Level one LXT970 is used by many boards */
	38
	39	#define MII_LXT970_IER 17 /* Interrupt Enable Register */
	40
	41	#define MII_LXT970_IER_IEN 0x0002
	42
	43	#define MII_LXT970_ISR 18 /* Interrupt Status Register */
	44
	45	#define MII_LXT970_CONFIG 19 /* Configuration Register */
	46
	47	/* ------------------------------------------------------------------------- */
	48	/* The Level one LXT971 is used on some of my custom boards */
	49
	50	/* register definitions for the 971 */
	51	#define MII_LXT971_IER 18 /* Interrupt Enable Register */
	52	#define MII_LXT971_IER_IEN 0x00f2
	53
	54	#define MII_LXT971_ISR 19 /* Interrupt Status Register */
	55
e13647c1 RC	56	/* register definitions for the 973 */
	57	#define MII_LXT973_PCR 16 /* Port Configuration Register */
	58	#define PCR_FIBER_SELECT 1
00db8189 AF	59
	60	MODULE_DESCRIPTION("Intel LXT PHY driver");
	61	MODULE_AUTHOR("Andy Fleming");
	62	MODULE_LICENSE("GPL");
	63
	64	static int lxt970_ack_interrupt(struct phy_device *phydev)
	65	{
	66	int err;
	67
	68	err = phy_read(phydev, MII_BMSR);
	69
	70	if (err < 0)
	71	return err;
	72
	73	err = phy_read(phydev, MII_LXT970_ISR);
	74
	75	if (err < 0)
	76	return err;
	77
	78	return 0;
	79	}
	80
	81	static int lxt970_config_intr(struct phy_device *phydev)
	82	{
	83	int err;
	84
	85	if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
	86	err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN);
	87	else
	88	err = phy_write(phydev, MII_LXT970_IER, 0);
	89
	90	return err;
	91	}
	92
	93	static int lxt970_config_init(struct phy_device *phydev)
	94	{
	95	int err;
	96
	97	err = phy_write(phydev, MII_LXT970_CONFIG, 0);
	98
	99	return err;
	100	}
	101
	102
	103	static int lxt971_ack_interrupt(struct phy_device *phydev)
	104	{
	105	int err = phy_read(phydev, MII_LXT971_ISR);
	106
	107	if (err < 0)
	108	return err;
	109
	110	return 0;
	111	}
	112
	113	static int lxt971_config_intr(struct phy_device *phydev)
	114	{
	115	int err;
	116
	117	if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
	118	err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN);
	119	else
	120	err = phy_write(phydev, MII_LXT971_IER, 0);
	121
	122	return err;
123	}
124
e13647c1 RC	125	static int lxt973_probe(struct phy_device *phydev)
	126	{
	127	int val = phy_read(phydev, MII_LXT973_PCR);
	128
	129	if (val & PCR_FIBER_SELECT) {
	130	/*
	131	* If fiber is selected, then the only correct setting
	132	* is 100Mbps, full duplex, and auto negotiation off.
	133	*/
	134	val = phy_read(phydev, MII_BMCR);
	135	val \|= (BMCR_SPEED100 \| BMCR_FULLDPLX);
	136	val &= ~BMCR_ANENABLE;
	137	phy_write(phydev, MII_BMCR, val);
	138	/* Remember that the port is in fiber mode. */
	139	phydev->priv = lxt973_probe;
	140	} else {
	141	phydev->priv = NULL;
	142	}
	143	return 0;
	144	}
	145
	146	static int lxt973_config_aneg(struct phy_device *phydev)
	147	{
	148	/* Do nothing if port is in fiber mode. */
	149	return phydev->priv ? 0 : genphy_config_aneg(phydev);
	150	}
	151
00db8189	152	static struct phy_driver lxt970_driver = {
600991b0	153	.phy_id = 0x78100000,
00db8189	154	.name = "LXT970",
600991b0	155	.phy_id_mask = 0xfffffff0,
00db8189 AF	156	.features = PHY_BASIC_FEATURES,
	157	.flags = PHY_HAS_INTERRUPT,
	158	.config_init = lxt970_config_init,
	159	.config_aneg = genphy_config_aneg,
	160	.read_status = genphy_read_status,
	161	.ack_interrupt = lxt970_ack_interrupt,
	162	.config_intr = lxt970_config_intr,
	163	.driver = { .owner = THIS_MODULE,},
	164	};
	165
	166	static struct phy_driver lxt971_driver = {
600991b0	167	.phy_id = 0x001378e0,
00db8189	168	.name = "LXT971",
600991b0	169	.phy_id_mask = 0xfffffff0,
00db8189 AF	170	.features = PHY_BASIC_FEATURES,
	171	.flags = PHY_HAS_INTERRUPT,
	172	.config_aneg = genphy_config_aneg,
	173	.read_status = genphy_read_status,
	174	.ack_interrupt = lxt971_ack_interrupt,
	175	.config_intr = lxt971_config_intr,
	176	.driver = { .owner = THIS_MODULE,},
	177	};
	178
e13647c1 RC	179	static struct phy_driver lxt973_driver = {
	180	.phy_id = 0x00137a10,
	181	.name = "LXT973",
	182	.phy_id_mask = 0xfffffff0,
	183	.features = PHY_BASIC_FEATURES,
	184	.flags = 0,
	185	.probe = lxt973_probe,
	186	.config_aneg = lxt973_config_aneg,
	187	.read_status = genphy_read_status,
	188	.driver = { .owner = THIS_MODULE,},
	189	};
	190
00db8189 AF	191	static int __init lxt_init(void)
	192	{
	193	int ret;
	194
	195	ret = phy_driver_register(&lxt970_driver);
	196	if (ret)
	197	goto err1;
	198
	199	ret = phy_driver_register(&lxt971_driver);
	200	if (ret)
	201	goto err2;
e13647c1 RC	202
	203	ret = phy_driver_register(&lxt973_driver);
	204	if (ret)
	205	goto err3;
00db8189 AF	206	return 0;
00db8189 AF	207
e13647c1 RC	208	err3:
	209	phy_driver_unregister(&lxt971_driver);
	210	err2:
00db8189 AF	211	phy_driver_unregister(&lxt970_driver);
	212	err1:
	213	return ret;
	214	}
	215
	216	static void __exit lxt_exit(void)
	217	{
	218	phy_driver_unregister(&lxt970_driver);
	219	phy_driver_unregister(&lxt971_driver);
e13647c1	220	phy_driver_unregister(&lxt973_driver);
00db8189 AF	221	}
	222
	223	module_init(lxt_init);
	224	module_exit(lxt_exit);
4e4f10f6 DW	225
	226	static struct mdio_device_id lxt_tbl[] = {
	227	{ 0x78100000, 0xfffffff0 },
	228	{ 0x001378e0, 0xfffffff0 },
e2f5b045	229	{ 0x00137a10, 0xfffffff0 },
4e4f10f6 DW	230	{ }
	231	};
	232
	233	MODULE_DEVICE_TABLE(mdio, lxt_tbl);