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

/*
 * drivers/net/phy/marvell.c
 *
 * Driver for Marvell 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_M1011_IEVENT		0x13
#define MII_M1011_IEVENT_CLEAR		0x0000

#define MII_M1011_IMASK			0x12
#define MII_M1011_IMASK_INIT		0x6400
#define MII_M1011_IMASK_CLEAR		0x0000

#define MII_M1011_PHY_SCR		0x10
#define MII_M1011_PHY_SCR_AUTO_CROSS	0x0060

#define MII_M1145_PHY_EXT_CR		0x14
#define MII_M1145_RGMII_RX_DELAY	0x0080
#define MII_M1145_RGMII_TX_DELAY	0x0002

#define M1145_DEV_FLAGS_RESISTANCE	0x00000001

#define MII_M1111_PHY_LED_CONTROL	0x18
#define MII_M1111_PHY_LED_DIRECT	0x4100
#define MII_M1111_PHY_LED_COMBINE	0x411c

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

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

	/* Clear the interrupts by reading the reg */
	err = phy_read(phydev, MII_M1011_IEVENT);

	if (err < 0)
		return err;

	return 0;
}

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

	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
		err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
	else
		err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);

	return err;
}

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

	/* The Marvell PHY has an errata which requires
	 * that certain registers get written in order
	 * to restart autonegotiation */
	err = phy_write(phydev, MII_BMCR, BMCR_RESET);

	if (err < 0)
		return err;

	err = phy_write(phydev, 0x1d, 0x1f);
	if (err < 0)
		return err;

	err = phy_write(phydev, 0x1e, 0x200c);
	if (err < 0)
		return err;

	err = phy_write(phydev, 0x1d, 0x5);
	if (err < 0)
		return err;

	err = phy_write(phydev, 0x1e, 0);
	if (err < 0)
		return err;

	err = phy_write(phydev, 0x1e, 0x100);
	if (err < 0)
		return err;

	err = phy_write(phydev, MII_M1011_PHY_SCR,
			MII_M1011_PHY_SCR_AUTO_CROSS);
	if (err < 0)
		return err;

	err = phy_write(phydev, MII_M1111_PHY_LED_CONTROL,
			MII_M1111_PHY_LED_DIRECT);
	if (err < 0)
		return err;

	err = genphy_config_aneg(phydev);

	return err;
}

static int m88e1145_config_init(struct phy_device *phydev)
{
	int err;

	/* Take care of errata E0 & E1 */
	err = phy_write(phydev, 0x1d, 0x001b);
	if (err < 0)
		return err;

	err = phy_write(phydev, 0x1e, 0x418f);
	if (err < 0)
		return err;

	err = phy_write(phydev, 0x1d, 0x0016);
	if (err < 0)
		return err;

	err = phy_write(phydev, 0x1e, 0xa2da);
	if (err < 0)
		return err;

	if (phydev->interface == PHY_INTERFACE_MODE_RGMII) {
		int temp = phy_read(phydev, MII_M1145_PHY_EXT_CR);
		if (temp < 0)
			return temp;

		temp |= (MII_M1145_RGMII_RX_DELAY | MII_M1145_RGMII_TX_DELAY);

		err = phy_write(phydev, MII_M1145_PHY_EXT_CR, temp);
		if (err < 0)
			return err;

		if (phydev->dev_flags & M1145_DEV_FLAGS_RESISTANCE) {
			err = phy_write(phydev, 0x1d, 0x0012);
			if (err < 0)
				return err;

			temp = phy_read(phydev, 0x1e);
			if (temp < 0)
				return temp;

			temp &= 0xf03f;
			temp |= 2 << 9;	/* 36 ohm */
			temp |= 2 << 6;	/* 39 ohm */

			err = phy_write(phydev, 0x1e, temp);
			if (err < 0)
				return err;

			err = phy_write(phydev, 0x1d, 0x3);
			if (err < 0)
				return err;

			err = phy_write(phydev, 0x1e, 0x8000);
			if (err < 0)
				return err;
		}
	}

	return 0;
}

static struct phy_driver m88e1101_driver = {
	.phy_id = 0x01410c60,
	.phy_id_mask = 0xfffffff0,
	.name = "Marvell 88E1101",
	.features = PHY_GBIT_FEATURES,
	.flags = PHY_HAS_INTERRUPT,
	.config_aneg = &marvell_config_aneg,
	.read_status = &genphy_read_status,
	.ack_interrupt = &marvell_ack_interrupt,
	.config_intr = &marvell_config_intr,
	.driver = {.owner = THIS_MODULE,},
};

static struct phy_driver m88e1111s_driver = {
	.phy_id = 0x01410cc0,
	.phy_id_mask = 0xfffffff0,
	.name = "Marvell 88E1111",
	.features = PHY_GBIT_FEATURES,
	.flags = PHY_HAS_INTERRUPT,
	.config_aneg = &marvell_config_aneg,
	.read_status = &genphy_read_status,
	.ack_interrupt = &marvell_ack_interrupt,
	.config_intr = &marvell_config_intr,
	.driver = {.owner = THIS_MODULE,},
};

static struct phy_driver m88e1145_driver = {
	.phy_id = 0x01410cd0,
	.phy_id_mask = 0xfffffff0,
	.name = "Marvell 88E1145",
	.features = PHY_GBIT_FEATURES,
	.flags = PHY_HAS_INTERRUPT,
	.config_init = &m88e1145_config_init,
	.config_aneg = &marvell_config_aneg,
	.read_status = &genphy_read_status,
	.ack_interrupt = &marvell_ack_interrupt,
	.config_intr = &marvell_config_intr,
	.driver = {.owner = THIS_MODULE,},
};

static int __init marvell_init(void)
{
	int ret;

	ret = phy_driver_register(&m88e1101_driver);
	if (ret)
		return ret;

	ret = phy_driver_register(&m88e1111s_driver);
	if (ret)
		goto err1111s;

	ret = phy_driver_register(&m88e1145_driver);
	if (ret)
		goto err1145;

	return 0;

      err1145:
	phy_driver_unregister(&m88e1111s_driver);
      err1111s:
	phy_driver_unregister(&m88e1101_driver);
	return ret;
}

static void __exit marvell_exit(void)
{
	phy_driver_unregister(&m88e1101_driver);
	phy_driver_unregister(&m88e1111s_driver);
	phy_driver_unregister(&m88e1145_driver);
}

module_init(marvell_init);
module_exit(marvell_exit);
Commit	Line	Data
00db8189 AF	1	/*
	2	* drivers/net/phy/marvell.c
	3	*
	4	* Driver for Marvell 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>
	20	#include <linux/slab.h>
	21	#include <linux/interrupt.h>
	22	#include <linux/init.h>
	23	#include <linux/delay.h>
	24	#include <linux/netdevice.h>
	25	#include <linux/etherdevice.h>
	26	#include <linux/skbuff.h>
	27	#include <linux/spinlock.h>
	28	#include <linux/mm.h>
	29	#include <linux/module.h>
00db8189 AF	30	#include <linux/mii.h>
	31	#include <linux/ethtool.h>
	32	#include <linux/phy.h>
	33
	34	#include <asm/io.h>
	35	#include <asm/irq.h>
	36	#include <asm/uaccess.h>
	37
	38	#define MII_M1011_IEVENT 0x13
	39	#define MII_M1011_IEVENT_CLEAR 0x0000
	40
	41	#define MII_M1011_IMASK 0x12
	42	#define MII_M1011_IMASK_INIT 0x6400
	43	#define MII_M1011_IMASK_CLEAR 0x0000
	44
76884679 AF	45	#define MII_M1011_PHY_SCR 0x10
	46	#define MII_M1011_PHY_SCR_AUTO_CROSS 0x0060
	47
	48	#define MII_M1145_PHY_EXT_CR 0x14
	49	#define MII_M1145_RGMII_RX_DELAY 0x0080
	50	#define MII_M1145_RGMII_TX_DELAY 0x0002
	51
	52	#define M1145_DEV_FLAGS_RESISTANCE 0x00000001
	53
	54	#define MII_M1111_PHY_LED_CONTROL 0x18
	55	#define MII_M1111_PHY_LED_DIRECT 0x4100
	56	#define MII_M1111_PHY_LED_COMBINE 0x411c
	57
00db8189 AF	58	MODULE_DESCRIPTION("Marvell PHY driver");
	59	MODULE_AUTHOR("Andy Fleming");
	60	MODULE_LICENSE("GPL");
	61
	62	static int marvell_ack_interrupt(struct phy_device *phydev)
	63	{
	64	int err;
	65
	66	/* Clear the interrupts by reading the reg */
	67	err = phy_read(phydev, MII_M1011_IEVENT);
	68
	69	if (err < 0)
	70	return err;
	71
	72	return 0;
	73	}
	74
	75	static int marvell_config_intr(struct phy_device *phydev)
	76	{
	77	int err;
	78
76884679	79	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
00db8189 AF	80	err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
	81	else
	82	err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
	83
	84	return err;
	85	}
	86
	87	static int marvell_config_aneg(struct phy_device *phydev)
	88	{
	89	int err;
	90
	91	/* The Marvell PHY has an errata which requires
	92	* that certain registers get written in order
	93	* to restart autonegotiation */
	94	err = phy_write(phydev, MII_BMCR, BMCR_RESET);
	95
	96	if (err < 0)
	97	return err;
	98
	99	err = phy_write(phydev, 0x1d, 0x1f);
	100	if (err < 0)
	101	return err;
	102
	103	err = phy_write(phydev, 0x1e, 0x200c);
	104	if (err < 0)
	105	return err;
	106
	107	err = phy_write(phydev, 0x1d, 0x5);
	108	if (err < 0)
	109	return err;
	110
	111	err = phy_write(phydev, 0x1e, 0);
	112	if (err < 0)
	113	return err;
	114
	115	err = phy_write(phydev, 0x1e, 0x100);
	116	if (err < 0)
	117	return err;
	118
76884679 AF	119	err = phy_write(phydev, MII_M1011_PHY_SCR,
	120	MII_M1011_PHY_SCR_AUTO_CROSS);
	121	if (err < 0)
	122	return err;
	123
	124	err = phy_write(phydev, MII_M1111_PHY_LED_CONTROL,
	125	MII_M1111_PHY_LED_DIRECT);
	126	if (err < 0)
	127	return err;
00db8189 AF	128
	129	err = genphy_config_aneg(phydev);
	130
	131	return err;
	132	}
	133
76884679 AF	134	static int m88e1145_config_init(struct phy_device *phydev)
	135	{
	136	int err;
	137
	138	/* Take care of errata E0 & E1 */
	139	err = phy_write(phydev, 0x1d, 0x001b);
	140	if (err < 0)
	141	return err;
	142
	143	err = phy_write(phydev, 0x1e, 0x418f);
	144	if (err < 0)
	145	return err;
	146
	147	err = phy_write(phydev, 0x1d, 0x0016);
	148	if (err < 0)
	149	return err;
	150
	151	err = phy_write(phydev, 0x1e, 0xa2da);
	152	if (err < 0)
	153	return err;
	154
	155	if (phydev->interface == PHY_INTERFACE_MODE_RGMII) {
	156	int temp = phy_read(phydev, MII_M1145_PHY_EXT_CR);
	157	if (temp < 0)
	158	return temp;
	159
	160	temp \|= (MII_M1145_RGMII_RX_DELAY \| MII_M1145_RGMII_TX_DELAY);
	161
	162	err = phy_write(phydev, MII_M1145_PHY_EXT_CR, temp);
	163	if (err < 0)
	164	return err;
	165
	166	if (phydev->dev_flags & M1145_DEV_FLAGS_RESISTANCE) {
	167	err = phy_write(phydev, 0x1d, 0x0012);
	168	if (err < 0)
	169	return err;
	170
	171	temp = phy_read(phydev, 0x1e);
	172	if (temp < 0)
	173	return temp;
	174
	175	temp &= 0xf03f;
	176	temp \|= 2 << 9; /* 36 ohm */
	177	temp \|= 2 << 6; /* 39 ohm */
	178
	179	err = phy_write(phydev, 0x1e, temp);
	180	if (err < 0)
	181	return err;
	182
	183	err = phy_write(phydev, 0x1d, 0x3);
	184	if (err < 0)
	185	return err;
	186
	187	err = phy_write(phydev, 0x1e, 0x8000);
	188	if (err < 0)
	189	return err;
	190	}
	191	}
	192
	193	return 0;
	194	}
00db8189 AF	195
00db8189 AF	196	static struct phy_driver m88e1101_driver = {
76884679 AF	197	.phy_id = 0x01410c60,
	198	.phy_id_mask = 0xfffffff0,
	199	.name = "Marvell 88E1101",
	200	.features = PHY_GBIT_FEATURES,
	201	.flags = PHY_HAS_INTERRUPT,
	202	.config_aneg = &marvell_config_aneg,
	203	.read_status = &genphy_read_status,
	204	.ack_interrupt = &marvell_ack_interrupt,
	205	.config_intr = &marvell_config_intr,
	206	.driver = {.owner = THIS_MODULE,},
	207	};
	208
	209	static struct phy_driver m88e1111s_driver = {
	210	.phy_id = 0x01410cc0,
	211	.phy_id_mask = 0xfffffff0,
	212	.name = "Marvell 88E1111",
	213	.features = PHY_GBIT_FEATURES,
	214	.flags = PHY_HAS_INTERRUPT,
	215	.config_aneg = &marvell_config_aneg,
	216	.read_status = &genphy_read_status,
	217	.ack_interrupt = &marvell_ack_interrupt,
	218	.config_intr = &marvell_config_intr,
	219	.driver = {.owner = THIS_MODULE,},
	220	};
	221
	222	static struct phy_driver m88e1145_driver = {
	223	.phy_id = 0x01410cd0,
	224	.phy_id_mask = 0xfffffff0,
	225	.name = "Marvell 88E1145",
	226	.features = PHY_GBIT_FEATURES,
	227	.flags = PHY_HAS_INTERRUPT,
	228	.config_init = &m88e1145_config_init,
	229	.config_aneg = &marvell_config_aneg,
	230	.read_status = &genphy_read_status,
	231	.ack_interrupt = &marvell_ack_interrupt,
	232	.config_intr = &marvell_config_intr,
	233	.driver = {.owner = THIS_MODULE,},
00db8189 AF	234	};
	235
	236	static int __init marvell_init(void)
	237	{
76884679 AF	238	int ret;
	239
	240	ret = phy_driver_register(&m88e1101_driver);
	241	if (ret)
	242	return ret;
	243
	244	ret = phy_driver_register(&m88e1111s_driver);
	245	if (ret)
	246	goto err1111s;
	247
	248	ret = phy_driver_register(&m88e1145_driver);
	249	if (ret)
	250	goto err1145;
	251
	252	return 0;
	253
	254	err1145:
	255	phy_driver_unregister(&m88e1111s_driver);
	256	err1111s:
	257	phy_driver_unregister(&m88e1101_driver);
	258	return ret;
00db8189 AF	259	}
	260
	261	static void __exit marvell_exit(void)
	262	{
	263	phy_driver_unregister(&m88e1101_driver);
76884679 AF	264	phy_driver_unregister(&m88e1111s_driver);
76884679 AF	265	phy_driver_unregister(&m88e1145_driver);
00db8189 AF	266	}
	267
	268	module_init(marvell_init);
	269	module_exit(marvell_exit);