drivers/net/phy/marvell.c - kernel/msm-4.9 - Gitiles

 /*
  * 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
 #define MII_M1111_PHY_EXT_CR		0x14
 #define MII_M1111_RX_DELAY		0x80
 #define MII_M1111_TX_DELAY		0x2
 #define MII_M1111_PHY_EXT_SR		0x1b
 #define MII_M1111_HWCFG_MODE_MASK	0xf
 #define MII_M1111_HWCFG_MODE_RGMII	0xb
 #define MII_M1111_HWCFG_MODE_SGMII_NO_CLK	0x4

 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 m88e1111_config_init(struct phy_device *phydev)
 {
 	int err;

 	if ((phydev->interface == PHY_INTERFACE_MODE_RGMII) ||
 	    (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
 	    (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
 	    (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
 		int temp;

 		temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
 		if (temp < 0)
 			return temp;

 		if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
 			temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
 		} else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
 			temp &= ~MII_M1111_TX_DELAY;
 			temp |= MII_M1111_RX_DELAY;
 		} else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
 			temp &= ~MII_M1111_RX_DELAY;
 			temp |= MII_M1111_TX_DELAY;
 		}

 		err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
 		if (err < 0)
 			return err;

 		temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
 		if (temp < 0)
 			return temp;

 		temp &= ~(MII_M1111_HWCFG_MODE_MASK);
 		temp |= MII_M1111_HWCFG_MODE_RGMII;

 		err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
 		if (err < 0)
 			return err;
 	}

 	if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
 		int temp;

 		temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
 		if (temp < 0)
 			return temp;

 		temp &= ~(MII_M1111_HWCFG_MODE_MASK);
 		temp |= MII_M1111_HWCFG_MODE_SGMII_NO_CLK;

 		err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
 		if (err < 0)
 			return err;
 	}

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

 	return 0;
 }

 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_ID) {
 		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 marvell_drivers[] = {
 	{
 		.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 },
 	},
 	{
 		.phy_id = 0x01410c90,
 		.phy_id_mask = 0xfffffff0,
 		.name = "Marvell 88E1112",
 		.features = PHY_GBIT_FEATURES,
 		.flags = PHY_HAS_INTERRUPT,
 		.config_init = &m88e1111_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 },
 	},
 	{
 		.phy_id = 0x01410cc0,
 		.phy_id_mask = 0xfffffff0,
 		.name = "Marvell 88E1111",
 		.features = PHY_GBIT_FEATURES,
 		.flags = PHY_HAS_INTERRUPT,
 		.config_init = &m88e1111_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 },
 	},
 	{
 		.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 },
 	},
 	{
 		.phy_id = 0x01410e30,
 		.phy_id_mask = 0xfffffff0,
 		.name = "Marvell 88E1240",
 		.features = PHY_GBIT_FEATURES,
 		.flags = PHY_HAS_INTERRUPT,
 		.config_init = &m88e1111_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;
 	int i;

 	for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++) {
 		ret = phy_driver_register(&marvell_drivers[i]);

 		if (ret) {
 			while (i-- > 0)
 				phy_driver_unregister(&marvell_drivers[i]);
 			return ret;
 		}
 	}

 	return 0;
 }

 static void __exit marvell_exit(void)
 {
 	int i;

 	for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++)
 		phy_driver_unregister(&marvell_drivers[i]);
 }

 module_init(marvell_init);
 module_exit(marvell_exit);
	/*
	* 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
	#define MII_M1111_PHY_EXT_CR 0x14
	#define MII_M1111_RX_DELAY 0x80
	#define MII_M1111_TX_DELAY 0x2
	#define MII_M1111_PHY_EXT_SR 0x1b
	#define MII_M1111_HWCFG_MODE_MASK 0xf
	#define MII_M1111_HWCFG_MODE_RGMII 0xb
	#define MII_M1111_HWCFG_MODE_SGMII_NO_CLK 0x4

	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 m88e1111_config_init(struct phy_device *phydev)
	{
	int err;

	if ((phydev->interface == PHY_INTERFACE_MODE_RGMII) \|\|
	(phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) \|\|
	(phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) \|\|
	(phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
	int temp;

	temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
	if (temp < 0)
	return temp;

	if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
	temp \|= (MII_M1111_RX_DELAY \| MII_M1111_TX_DELAY);
	} else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
	temp &= ~MII_M1111_TX_DELAY;
	temp \|= MII_M1111_RX_DELAY;
	} else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
	temp &= ~MII_M1111_RX_DELAY;
	temp \|= MII_M1111_TX_DELAY;
	}

	err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
	if (err < 0)
	return err;

	temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
	if (temp < 0)
	return temp;

	temp &= ~(MII_M1111_HWCFG_MODE_MASK);
	temp \|= MII_M1111_HWCFG_MODE_RGMII;

	err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
	if (err < 0)
	return err;
	}

	if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
	int temp;

	temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
	if (temp < 0)
	return temp;

	temp &= ~(MII_M1111_HWCFG_MODE_MASK);
	temp \|= MII_M1111_HWCFG_MODE_SGMII_NO_CLK;

	err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
	if (err < 0)
	return err;
	}

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

	return 0;
	}

	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_ID) {
	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 marvell_drivers[] = {
	{
	.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 },
	},
	{
	.phy_id = 0x01410c90,
	.phy_id_mask = 0xfffffff0,
	.name = "Marvell 88E1112",
	.features = PHY_GBIT_FEATURES,
	.flags = PHY_HAS_INTERRUPT,
	.config_init = &m88e1111_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 },
	},
	{
	.phy_id = 0x01410cc0,
	.phy_id_mask = 0xfffffff0,
	.name = "Marvell 88E1111",
	.features = PHY_GBIT_FEATURES,
	.flags = PHY_HAS_INTERRUPT,
	.config_init = &m88e1111_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 },
	},
	{
	.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 },
	},
	{
	.phy_id = 0x01410e30,
	.phy_id_mask = 0xfffffff0,
	.name = "Marvell 88E1240",
	.features = PHY_GBIT_FEATURES,
	.flags = PHY_HAS_INTERRUPT,
	.config_init = &m88e1111_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;
	int i;

	for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++) {
	ret = phy_driver_register(&marvell_drivers[i]);

	if (ret) {
	while (i-- > 0)
	phy_driver_unregister(&marvell_drivers[i]);
	return ret;
	}
	}

	return 0;
	}

	static void __exit marvell_exit(void)
	{
	int i;

	for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++)
	phy_driver_unregister(&marvell_drivers[i]);
	}

	module_init(marvell_init);
	module_exit(marvell_exit);