linux_kernel/drivers/net/phy/micrel.c

/*
 * drivers/net/phy/micrel.c
 *
 * Driver for Micrel PHYs
 *
 * Author: David J. Choi
 *
 * Copyright (c) 2010-2013 Micrel, 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.
 *
 * Support : Micrel Phys:
 *		Giga phys: ksz9021, ksz9031
 *		100/10 Phys : ksz8001, ksz8721, ksz8737, ksz8041
 *			   ksz8021, ksz8031, ksz8051,
 *			   ksz8081, ksz8091,
 *			   ksz8061,
 *		Switch : ksz8873, ksz886x
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/phy.h>
#include <linux/micrel_phy.h>
#include <linux/of.h>
#include <linux/clk.h>

/* Operation Mode Strap Override */
#define MII_KSZPHY_OMSO				0x16
#define KSZPHY_OMSO_B_CAST_OFF			(1 << 9)
#define KSZPHY_OMSO_RMII_OVERRIDE		(1 << 1)
#define KSZPHY_OMSO_MII_OVERRIDE		(1 << 0)

/* general Interrupt control/status reg in vendor specific block. */
#define MII_KSZPHY_INTCS			0x1B
#define	KSZPHY_INTCS_JABBER			(1 << 15)
#define	KSZPHY_INTCS_RECEIVE_ERR		(1 << 14)
#define	KSZPHY_INTCS_PAGE_RECEIVE		(1 << 13)
#define	KSZPHY_INTCS_PARELLEL			(1 << 12)
#define	KSZPHY_INTCS_LINK_PARTNER_ACK		(1 << 11)
#define	KSZPHY_INTCS_LINK_DOWN			(1 << 10)
#define	KSZPHY_INTCS_REMOTE_FAULT		(1 << 9)
#define	KSZPHY_INTCS_LINK_UP			(1 << 8)
#define	KSZPHY_INTCS_ALL			(KSZPHY_INTCS_LINK_UP |\
						KSZPHY_INTCS_LINK_DOWN)

/* general PHY control reg in vendor specific block. */
#define	MII_KSZPHY_CTRL			0x1F
/* bitmap of PHY register to set interrupt mode */
#define KSZPHY_CTRL_INT_ACTIVE_HIGH		(1 << 9)
#define KSZ9021_CTRL_INT_ACTIVE_HIGH		(1 << 14)
#define KS8737_CTRL_INT_ACTIVE_HIGH		(1 << 14)
#define KSZ8051_RMII_50MHZ_CLK			(1 << 7)

/* Write/read to/from extended registers */
#define MII_KSZPHY_EXTREG                       0x0b
#define KSZPHY_EXTREG_WRITE                     0x8000

#define MII_KSZPHY_EXTREG_WRITE                 0x0c
#define MII_KSZPHY_EXTREG_READ                  0x0d

/* Extended registers */
#define MII_KSZPHY_CLK_CONTROL_PAD_SKEW         0x104
#define MII_KSZPHY_RX_DATA_PAD_SKEW             0x105
#define MII_KSZPHY_TX_DATA_PAD_SKEW             0x106

#define PS_TO_REG				200

static int ksz_config_flags(struct phy_device *phydev)
{
	int regval;

	if (phydev->dev_flags & (MICREL_PHY_50MHZ_CLK | MICREL_PHY_25MHZ_CLK)) {
		regval = phy_read(phydev, MII_KSZPHY_CTRL);
		if (phydev->dev_flags & MICREL_PHY_50MHZ_CLK)
			regval |= KSZ8051_RMII_50MHZ_CLK;
		else
			regval &= ~KSZ8051_RMII_50MHZ_CLK;
		return phy_write(phydev, MII_KSZPHY_CTRL, regval);
	}
	return 0;
}

static int kszphy_extended_write(struct phy_device *phydev,
				u32 regnum, u16 val)
{
	phy_write(phydev, MII_KSZPHY_EXTREG, KSZPHY_EXTREG_WRITE | regnum);
	return phy_write(phydev, MII_KSZPHY_EXTREG_WRITE, val);
}

static int kszphy_extended_read(struct phy_device *phydev,
				u32 regnum)
{
	phy_write(phydev, MII_KSZPHY_EXTREG, regnum);
	return phy_read(phydev, MII_KSZPHY_EXTREG_READ);
}

static int kszphy_ack_interrupt(struct phy_device *phydev)
{
	/* bit[7..0] int status, which is a read and clear register. */
	int rc;

	rc = phy_read(phydev, MII_KSZPHY_INTCS);

	return (rc < 0) ? rc : 0;
}

static int kszphy_set_interrupt(struct phy_device *phydev)
{
	int temp;
	temp = (PHY_INTERRUPT_ENABLED == phydev->interrupts) ?
		KSZPHY_INTCS_ALL : 0;
	return phy_write(phydev, MII_KSZPHY_INTCS, temp);
}

static int kszphy_config_intr(struct phy_device *phydev)
{
	int temp, rc;

	/* set the interrupt pin active low */
	temp = phy_read(phydev, MII_KSZPHY_CTRL);
	temp &= ~KSZPHY_CTRL_INT_ACTIVE_HIGH;
	phy_write(phydev, MII_KSZPHY_CTRL, temp);
	rc = kszphy_set_interrupt(phydev);
	return rc < 0 ? rc : 0;
}

static int ksz9021_config_intr(struct phy_device *phydev)
{
	int temp, rc;

	/* set the interrupt pin active low */
	temp = phy_read(phydev, MII_KSZPHY_CTRL);
	temp &= ~KSZ9021_CTRL_INT_ACTIVE_HIGH;
	phy_write(phydev, MII_KSZPHY_CTRL, temp);
	rc = kszphy_set_interrupt(phydev);
	return rc < 0 ? rc : 0;
}

static int ks8737_config_intr(struct phy_device *phydev)
{
	int temp, rc;

	/* set the interrupt pin active low */
	temp = phy_read(phydev, MII_KSZPHY_CTRL);
	temp &= ~KS8737_CTRL_INT_ACTIVE_HIGH;
	phy_write(phydev, MII_KSZPHY_CTRL, temp);
	rc = kszphy_set_interrupt(phydev);
	return rc < 0 ? rc : 0;
}

static int kszphy_setup_led(struct phy_device *phydev,
			    unsigned int reg, unsigned int shift)
{

	struct device *dev = &phydev->dev;
	struct device_node *of_node = dev->of_node;
	int rc, temp;
	u32 val;

	if (!of_node && dev->parent->of_node)
		of_node = dev->parent->of_node;

	if (of_property_read_u32(of_node, "micrel,led-mode", &val))
		return 0;

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

	temp &= ~(3 << shift);
	temp |= val << shift;
	rc = phy_write(phydev, reg, temp);

	return rc < 0 ? rc : 0;
}

static int kszphy_config_init(struct phy_device *phydev)
{
	return 0;
}

static int kszphy_config_init_led8041(struct phy_device *phydev)
{
	/* single led control, register 0x1e bits 15..14 */
	return kszphy_setup_led(phydev, 0x1e, 14);
}

static int ksz8021_config_init(struct phy_device *phydev)
{
	const u16 val = KSZPHY_OMSO_B_CAST_OFF | KSZPHY_OMSO_RMII_OVERRIDE;
	int rc;

	rc = kszphy_setup_led(phydev, 0x1f, 4);
	if (rc)
		dev_err(&phydev->dev, "failed to set led mode\n");

	rc = ksz_config_flags(phydev);
	if (rc < 0)
		return rc;
	rc = phy_write(phydev, MII_KSZPHY_OMSO, val);
	return rc < 0 ? rc : 0;
}

static int ks8051_config_init(struct phy_device *phydev)
{
	int rc;

	rc = kszphy_setup_led(phydev, 0x1f, 4);
	if (rc)
		dev_err(&phydev->dev, "failed to set led mode\n");

	rc = ksz_config_flags(phydev);
	return rc < 0 ? rc : 0;
}

static int ksz9021_load_values_from_of(struct phy_device *phydev,
				       struct device_node *of_node, u16 reg,
				       char *field1, char *field2,
				       char *field3, char *field4)
{
	int val1 = -1;
	int val2 = -2;
	int val3 = -3;
	int val4 = -4;
	int newval;
	int matches = 0;

	if (!of_property_read_u32(of_node, field1, &val1))
		matches++;

	if (!of_property_read_u32(of_node, field2, &val2))
		matches++;

	if (!of_property_read_u32(of_node, field3, &val3))
		matches++;

	if (!of_property_read_u32(of_node, field4, &val4))
		matches++;

	if (!matches)
		return 0;

	if (matches < 4)
		newval = kszphy_extended_read(phydev, reg);
	else
		newval = 0;

	if (val1 != -1)
		newval = ((newval & 0xfff0) | ((val1 / PS_TO_REG) & 0xf) << 0);

	if (val2 != -2)
		newval = ((newval & 0xff0f) | ((val2 / PS_TO_REG) & 0xf) << 4);

	if (val3 != -3)
		newval = ((newval & 0xf0ff) | ((val3 / PS_TO_REG) & 0xf) << 8);

	if (val4 != -4)
		newval = ((newval & 0x0fff) | ((val4 / PS_TO_REG) & 0xf) << 12);

	return kszphy_extended_write(phydev, reg, newval);
}

static int ksz9021_config_init(struct phy_device *phydev)
{
	struct device *dev = &phydev->dev;
	struct device_node *of_node = dev->of_node;

	if (!of_node && dev->parent->of_node)
		of_node = dev->parent->of_node;

	if (of_node) {
		ksz9021_load_values_from_of(phydev, of_node,
				    MII_KSZPHY_CLK_CONTROL_PAD_SKEW,
				    "txen-skew-ps", "txc-skew-ps",
				    "rxdv-skew-ps", "rxc-skew-ps");
		ksz9021_load_values_from_of(phydev, of_node,
				    MII_KSZPHY_RX_DATA_PAD_SKEW,
				    "rxd0-skew-ps", "rxd1-skew-ps",
				    "rxd2-skew-ps", "rxd3-skew-ps");
		ksz9021_load_values_from_of(phydev, of_node,
				    MII_KSZPHY_TX_DATA_PAD_SKEW,
				    "txd0-skew-ps", "txd1-skew-ps",
				    "txd2-skew-ps", "txd3-skew-ps");
	}
	return 0;
}

#define MII_KSZ9031RN_MMD_CTRL_REG	0x0d
#define MII_KSZ9031RN_MMD_REGDATA_REG	0x0e
#define OP_DATA				1
#define KSZ9031_PS_TO_REG		60

/* Extended registers */
#define MII_KSZ9031RN_CONTROL_PAD_SKEW	4
#define MII_KSZ9031RN_RX_DATA_PAD_SKEW	5
#define MII_KSZ9031RN_TX_DATA_PAD_SKEW	6
#define MII_KSZ9031RN_CLK_PAD_SKEW	8

static int ksz9031_extended_write(struct phy_device *phydev,
				  u8 mode, u32 dev_addr, u32 regnum, u16 val)
{
	phy_write(phydev, MII_KSZ9031RN_MMD_CTRL_REG, dev_addr);
	phy_write(phydev, MII_KSZ9031RN_MMD_REGDATA_REG, regnum);
	phy_write(phydev, MII_KSZ9031RN_MMD_CTRL_REG, (mode << 14) | dev_addr);
	return phy_write(phydev, MII_KSZ9031RN_MMD_REGDATA_REG, val);
}

static int ksz9031_extended_read(struct phy_device *phydev,
				 u8 mode, u32 dev_addr, u32 regnum)
{
	phy_write(phydev, MII_KSZ9031RN_MMD_CTRL_REG, dev_addr);
	phy_write(phydev, MII_KSZ9031RN_MMD_REGDATA_REG, regnum);
	phy_write(phydev, MII_KSZ9031RN_MMD_CTRL_REG, (mode << 14) | dev_addr);
	return phy_read(phydev, MII_KSZ9031RN_MMD_REGDATA_REG);
}

static int ksz9031_of_load_skew_values(struct phy_device *phydev,
				       struct device_node *of_node,
				       u16 reg, size_t field_sz,
				       char *field[], u8 numfields)
{
	int val[4] = {-1, -2, -3, -4};
	int matches = 0;
	u16 mask;
	u16 maxval;
	u16 newval;
	int i;

	for (i = 0; i < numfields; i++)
		if (!of_property_read_u32(of_node, field[i], val + i))
			matches++;

	if (!matches)
		return 0;

	if (matches < numfields)
		newval = ksz9031_extended_read(phydev, OP_DATA, 2, reg);
	else
		newval = 0;

	maxval = (field_sz == 4) ? 0xf : 0x1f;
	for (i = 0; i < numfields; i++)
		if (val[i] != -(i + 1)) {
			mask = 0xffff;
			mask ^= maxval << (field_sz * i);
			newval = (newval & mask) |
				(((val[i] / KSZ9031_PS_TO_REG) & maxval)
					<< (field_sz * i));
		}

	return ksz9031_extended_write(phydev, OP_DATA, 2, reg, newval);
}

static int ksz9031_config_init(struct phy_device *phydev)
{
	struct device *dev = &phydev->dev;
	struct device_node *of_node = dev->of_node;
	char *clk_skews[2] = {"rxc-skew-ps", "txc-skew-ps"};
	char *rx_data_skews[4] = {
		"rxd0-skew-ps", "rxd1-skew-ps",
		"rxd2-skew-ps", "rxd3-skew-ps"
	};
	char *tx_data_skews[4] = {
		"txd0-skew-ps", "txd1-skew-ps",
		"txd2-skew-ps", "txd3-skew-ps"
	};
	char *control_skews[2] = {"txen-skew-ps", "rxdv-skew-ps"};

	if (!of_node && dev->parent->of_node)
		of_node = dev->parent->of_node;

	if (of_node) {
		ksz9031_of_load_skew_values(phydev, of_node,
				MII_KSZ9031RN_CLK_PAD_SKEW, 5,
				clk_skews, 2);

		ksz9031_of_load_skew_values(phydev, of_node,
				MII_KSZ9031RN_CONTROL_PAD_SKEW, 4,
				control_skews, 2);

		ksz9031_of_load_skew_values(phydev, of_node,
				MII_KSZ9031RN_RX_DATA_PAD_SKEW, 4,
				rx_data_skews, 4);

		ksz9031_of_load_skew_values(phydev, of_node,
				MII_KSZ9031RN_TX_DATA_PAD_SKEW, 4,
				tx_data_skews, 4);
	}
	return 0;
}

#define KSZ8873MLL_GLOBAL_CONTROL_4	0x06
#define KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX	(1 << 6)
#define KSZ8873MLL_GLOBAL_CONTROL_4_SPEED	(1 << 4)
static int ksz8873mll_read_status(struct phy_device *phydev)
{
	int regval;

	/* dummy read */
	regval = phy_read(phydev, KSZ8873MLL_GLOBAL_CONTROL_4);

	regval = phy_read(phydev, KSZ8873MLL_GLOBAL_CONTROL_4);

	if (regval & KSZ8873MLL_GLOBAL_CONTROL_4_DUPLEX)
		phydev->duplex = DUPLEX_HALF;
	else
		phydev->duplex = DUPLEX_FULL;

	if (regval & KSZ8873MLL_GLOBAL_CONTROL_4_SPEED)
		phydev->speed = SPEED_10;
	else
		phydev->speed = SPEED_100;

	phydev->link = 1;
	phydev->pause = phydev->asym_pause = 0;

	return 0;
}

static int ksz8873mll_config_aneg(struct phy_device *phydev)
{
	return 0;
}

/* This routine returns -1 as an indication to the caller that the
 * Micrel ksz9021 10/100/1000 PHY does not support standard IEEE
 * MMD extended PHY registers.
 */
static int
ksz9021_rd_mmd_phyreg(struct phy_device *phydev, int ptrad, int devnum,
		      int regnum)
{
	return -1;
}

/* This routine does nothing since the Micrel ksz9021 does not support
 * standard IEEE MMD extended PHY registers.
 */
static void
ksz9021_wr_mmd_phyreg(struct phy_device *phydev, int ptrad, int devnum,
		      int regnum, u32 val)
{
}

static int ksz8021_probe(struct phy_device *phydev)
{
	struct clk *clk;

	clk = devm_clk_get(&phydev->dev, "rmii-ref");
	if (!IS_ERR(clk)) {
		unsigned long rate = clk_get_rate(clk);

		if (rate > 24500000 && rate < 25500000) {
			phydev->dev_flags |= MICREL_PHY_25MHZ_CLK;
		} else if (rate > 49500000 && rate < 50500000) {
			phydev->dev_flags |= MICREL_PHY_50MHZ_CLK;
		} else {
			dev_err(&phydev->dev, "Clock rate out of range: %ld\n", rate);
			return -EINVAL;
		}
	}

	return 0;
}

static struct phy_driver ksphy_driver[] = {
{
	.phy_id		= PHY_ID_KS8737,
	.phy_id_mask	= 0x00fffff0,
	.name		= "Micrel KS8737",
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= kszphy_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= ks8737_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ8021,
	.phy_id_mask	= 0x00ffffff,
	.name		= "Micrel KSZ8021 or KSZ8031",
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause |
			   SUPPORTED_Asym_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.probe		= ksz8021_probe,
	.config_init	= ksz8021_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= kszphy_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ8031,
	.phy_id_mask	= 0x00ffffff,
	.name		= "Micrel KSZ8031",
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause |
			   SUPPORTED_Asym_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.probe		= ksz8021_probe,
	.config_init	= ksz8021_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= kszphy_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ8041,
	.phy_id_mask	= 0x00fffff0,
	.name		= "Micrel KSZ8041",
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause
				| SUPPORTED_Asym_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= kszphy_config_init_led8041,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= kszphy_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ8041RNLI,
	.phy_id_mask	= 0x00fffff0,
	.name		= "Micrel KSZ8041RNLI",
	.features	= PHY_BASIC_FEATURES |
			  SUPPORTED_Pause | SUPPORTED_Asym_Pause,
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= kszphy_config_init_led8041,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= kszphy_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ8051,
	.phy_id_mask	= 0x00fffff0,
	.name		= "Micrel KSZ8051",
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause
				| SUPPORTED_Asym_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= ks8051_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= kszphy_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ8001,
	.name		= "Micrel KSZ8001 or KS8721",
	.phy_id_mask	= 0x00ffffff,
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= kszphy_config_init_led8041,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= kszphy_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ8081,
	.name		= "Micrel KSZ8081 or KSZ8091",
	.phy_id_mask	= 0x00fffff0,
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= kszphy_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= kszphy_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ8061,
	.name		= "Micrel KSZ8061",
	.phy_id_mask	= 0x00fffff0,
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= kszphy_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= kszphy_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE,},
}, {
	.phy_id		= PHY_ID_KSZ9021,
	.phy_id_mask	= 0x000ffffe,
	.name		= "Micrel KSZ9021 Gigabit PHY",
	.features	= (PHY_GBIT_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= ksz9021_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= ksz9021_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.read_mmd_indirect = ksz9021_rd_mmd_phyreg,
	.write_mmd_indirect = ksz9021_wr_mmd_phyreg,
	.driver		= { .owner = THIS_MODULE, },
}, {
	.phy_id		= PHY_ID_KSZ9031,
	.phy_id_mask	= 0x00fffff0,
	.name		= "Micrel KSZ9031 Gigabit PHY",
	.features	= (PHY_GBIT_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= ksz9031_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= kszphy_ack_interrupt,
	.config_intr	= ksz9021_config_intr,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE, },
}, {
	.phy_id		= PHY_ID_KSZ8873MLL,
	.phy_id_mask	= 0x00fffff0,
	.name		= "Micrel KSZ8873MLL Switch",
	.features	= (SUPPORTED_Pause | SUPPORTED_Asym_Pause),
	.flags		= PHY_HAS_MAGICANEG,
	.config_init	= kszphy_config_init,
	.config_aneg	= ksz8873mll_config_aneg,
	.read_status	= ksz8873mll_read_status,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE, },
}, {
	.phy_id		= PHY_ID_KSZ886X,
	.phy_id_mask	= 0x00fffff0,
	.name		= "Micrel KSZ886X Switch",
	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= kszphy_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.suspend	= genphy_suspend,
	.resume		= genphy_resume,
	.driver		= { .owner = THIS_MODULE, },
} };

static int __init ksphy_init(void)
{
	return phy_drivers_register(ksphy_driver,
		ARRAY_SIZE(ksphy_driver));
}

static void __exit ksphy_exit(void)
{
	phy_drivers_unregister(ksphy_driver,
		ARRAY_SIZE(ksphy_driver));
}

module_init(ksphy_init);
module_exit(ksphy_exit);

MODULE_DESCRIPTION("Micrel PHY driver");
MODULE_AUTHOR("David J. Choi");
MODULE_LICENSE("GPL");

static struct mdio_device_id __maybe_unused micrel_tbl[] = {
	{ PHY_ID_KSZ9021, 0x000ffffe },
	{ PHY_ID_KSZ9031, 0x00fffff0 },
	{ PHY_ID_KSZ8001, 0x00ffffff },
	{ PHY_ID_KS8737, 0x00fffff0 },
	{ PHY_ID_KSZ8021, 0x00ffffff },
	{ PHY_ID_KSZ8031, 0x00ffffff },
	{ PHY_ID_KSZ8041, 0x00fffff0 },
	{ PHY_ID_KSZ8051, 0x00fffff0 },
	{ PHY_ID_KSZ8061, 0x00fffff0 },
	{ PHY_ID_KSZ8081, 0x00fffff0 },
	{ PHY_ID_KSZ8873MLL, 0x00fffff0 },
	{ PHY_ID_KSZ886X, 0x00fffff0 },
	{ }
};

MODULE_DEVICE_TABLE(mdio, micrel_tbl);