[deliverable/linux.git] / drivers / net / phy / bcm63xx.c

/*
 *	Driver for Broadcom 63xx SOCs integrated PHYs
 *
 *	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/module.h>
#include <linux/phy.h>

#define MII_BCM63XX_IR		0x1a	/* interrupt register */
#define MII_BCM63XX_IR_EN	0x4000	/* global interrupt enable */
#define MII_BCM63XX_IR_DUPLEX	0x0800	/* duplex changed */
#define MII_BCM63XX_IR_SPEED	0x0400	/* speed changed */
#define MII_BCM63XX_IR_LINK	0x0200	/* link changed */
#define MII_BCM63XX_IR_GMASK	0x0100	/* global interrupt mask */

MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
MODULE_LICENSE("GPL");

static int bcm63xx_config_init(struct phy_device *phydev)
{
	int reg, err;

	reg = phy_read(phydev, MII_BCM63XX_IR);
	if (reg < 0)
		return reg;

	/* Mask interrupts globally.  */
	reg |= MII_BCM63XX_IR_GMASK;
	err = phy_write(phydev, MII_BCM63XX_IR, reg);
	if (err < 0)
		return err;

	/* Unmask events we are interested in  */
	reg = ~(MII_BCM63XX_IR_DUPLEX |
		MII_BCM63XX_IR_SPEED |
		MII_BCM63XX_IR_LINK) |
		MII_BCM63XX_IR_EN;
	return phy_write(phydev, MII_BCM63XX_IR, reg);
}

static int bcm63xx_ack_interrupt(struct phy_device *phydev)
{
	int reg;

	/* Clear pending interrupts.  */
	reg = phy_read(phydev, MII_BCM63XX_IR);
	if (reg < 0)
		return reg;

	return 0;
}

static int bcm63xx_config_intr(struct phy_device *phydev)
{
	int reg, err;

	reg = phy_read(phydev, MII_BCM63XX_IR);
	if (reg < 0)
		return reg;

	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
		reg &= ~MII_BCM63XX_IR_GMASK;
	else
		reg |= MII_BCM63XX_IR_GMASK;

	err = phy_write(phydev, MII_BCM63XX_IR, reg);
	return err;
}

static struct phy_driver bcm63xx_1_driver = {
	.phy_id		= 0x00406000,
	.phy_id_mask	= 0xfffffc00,
	.name		= "Broadcom BCM63XX (1)",
	/* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_INTERRUPT,
	.config_init	= bcm63xx_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= bcm63xx_ack_interrupt,
	.config_intr	= bcm63xx_config_intr,
	.driver		= { .owner = THIS_MODULE },
};

/* same phy as above, with just a different OUI */
static struct phy_driver bcm63xx_2_driver = {
	.phy_id		= 0x002bdc00,
	.phy_id_mask	= 0xfffffc00,
	.name		= "Broadcom BCM63XX (2)",
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_INTERRUPT,
	.config_init	= bcm63xx_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= bcm63xx_ack_interrupt,
	.config_intr	= bcm63xx_config_intr,
	.driver		= { .owner = THIS_MODULE },
};

static int __init bcm63xx_phy_init(void)
{
	int ret;

	ret = phy_driver_register(&bcm63xx_1_driver);
	if (ret)
		goto out_63xx_1;
	ret = phy_driver_register(&bcm63xx_2_driver);
	if (ret)
		goto out_63xx_2;
	return ret;

out_63xx_2:
	phy_driver_unregister(&bcm63xx_1_driver);
out_63xx_1:
	return ret;
}

static void __exit bcm63xx_phy_exit(void)
{
	phy_driver_unregister(&bcm63xx_1_driver);
	phy_driver_unregister(&bcm63xx_2_driver);
}

module_init(bcm63xx_phy_init);
module_exit(bcm63xx_phy_exit);

static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
	{ 0x00406000, 0xfffffc00 },
	{ 0x002bdc00, 0xfffffc00 },
	{ }
};

MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);
Commit	Line	Data
09bb9aa0 MB	1	/*
	2	* Driver for Broadcom 63xx SOCs integrated PHYs
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*/
	9	#include <linux/module.h>
	10	#include <linux/phy.h>
	11
	12	#define MII_BCM63XX_IR 0x1a /* interrupt register */
	13	#define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */
	14	#define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */
	15	#define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */
	16	#define MII_BCM63XX_IR_LINK 0x0200 /* link changed */
	17	#define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */
	18
	19	MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
	20	MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
	21	MODULE_LICENSE("GPL");
	22
	23	static int bcm63xx_config_init(struct phy_device *phydev)
	24	{
	25	int reg, err;
	26
	27	reg = phy_read(phydev, MII_BCM63XX_IR);
	28	if (reg < 0)
	29	return reg;
	30
	31	/* Mask interrupts globally. */
	32	reg \|= MII_BCM63XX_IR_GMASK;
	33	err = phy_write(phydev, MII_BCM63XX_IR, reg);
	34	if (err < 0)
	35	return err;
	36
	37	/* Unmask events we are interested in */
	38	reg = ~(MII_BCM63XX_IR_DUPLEX \|
	39	MII_BCM63XX_IR_SPEED \|
	40	MII_BCM63XX_IR_LINK) \|
	41	MII_BCM63XX_IR_EN;
a25cc43e	42	return phy_write(phydev, MII_BCM63XX_IR, reg);
09bb9aa0 MB	43	}
	44
	45	static int bcm63xx_ack_interrupt(struct phy_device *phydev)
	46	{
	47	int reg;
	48
	49	/* Clear pending interrupts. */
	50	reg = phy_read(phydev, MII_BCM63XX_IR);
	51	if (reg < 0)
	52	return reg;
	53
	54	return 0;
	55	}
	56
	57	static int bcm63xx_config_intr(struct phy_device *phydev)
	58	{
	59	int reg, err;
	60
	61	reg = phy_read(phydev, MII_BCM63XX_IR);
	62	if (reg < 0)
	63	return reg;
	64
	65	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
	66	reg &= ~MII_BCM63XX_IR_GMASK;
	67	else
	68	reg \|= MII_BCM63XX_IR_GMASK;
	69
	70	err = phy_write(phydev, MII_BCM63XX_IR, reg);
	71	return err;
	72	}
	73
	74	static struct phy_driver bcm63xx_1_driver = {
	75	.phy_id = 0x00406000,
	76	.phy_id_mask = 0xfffffc00,
	77	.name = "Broadcom BCM63XX (1)",
	78	/* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
	79	.features = (PHY_BASIC_FEATURES \| SUPPORTED_Pause),
	80	.flags = PHY_HAS_INTERRUPT,
	81	.config_init = bcm63xx_config_init,
	82	.config_aneg = genphy_config_aneg,
	83	.read_status = genphy_read_status,
	84	.ack_interrupt = bcm63xx_ack_interrupt,
	85	.config_intr = bcm63xx_config_intr,
	86	.driver = { .owner = THIS_MODULE },
	87	};
	88
	89	/* same phy as above, with just a different OUI */
	90	static struct phy_driver bcm63xx_2_driver = {
	91	.phy_id = 0x002bdc00,
	92	.phy_id_mask = 0xfffffc00,
	93	.name = "Broadcom BCM63XX (2)",
	94	.features = (PHY_BASIC_FEATURES \| SUPPORTED_Pause),
	95	.flags = PHY_HAS_INTERRUPT,
	96	.config_init = bcm63xx_config_init,
	97	.config_aneg = genphy_config_aneg,
	98	.read_status = genphy_read_status,
	99	.ack_interrupt = bcm63xx_ack_interrupt,
	100	.config_intr = bcm63xx_config_intr,
	101	.driver = { .owner = THIS_MODULE },
	102	};
	103
	104	static int __init bcm63xx_phy_init(void)
	105	{
	106	int ret;
107
108	ret = phy_driver_register(&bcm63xx_1_driver);
109	if (ret)
110	goto out_63xx_1;
111	ret = phy_driver_register(&bcm63xx_2_driver);
112	if (ret)
113	goto out_63xx_2;
114	return ret;
115
116	out_63xx_2:
117	phy_driver_unregister(&bcm63xx_1_driver);
118	out_63xx_1:
119	return ret;
120	}
121
122	static void __exit bcm63xx_phy_exit(void)
123	{
124	phy_driver_unregister(&bcm63xx_1_driver);
125	phy_driver_unregister(&bcm63xx_2_driver);
126	}
127
128	module_init(bcm63xx_phy_init);
129	module_exit(bcm63xx_phy_exit);
4e4f10f6	130
cf93c945	131	static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
4e4f10f6 DW	132	{ 0x00406000, 0xfffffc00 },
	133	{ 0x002bdc00, 0xfffffc00 },
	134	{ }
	135	};
	136
0de8655a	137	MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);