[people/ms/u-boot.git] / drivers / net / phy / realtek.c

/*
 * RealTek PHY drivers
 *
 * SPDX-License-Identifier:	GPL-2.0+
 *
 * Copyright 2010-2011, 2015 Freescale Semiconductor, Inc.
 * author Andy Fleming
 */
#include <config.h>
#include <common.h>
#include <phy.h>

#define PHY_AUTONEGOTIATE_TIMEOUT 5000

/* RTL8211x PHY Status Register */
#define MIIM_RTL8211x_PHY_STATUS       0x11
#define MIIM_RTL8211x_PHYSTAT_SPEED    0xc000
#define MIIM_RTL8211x_PHYSTAT_GBIT     0x8000
#define MIIM_RTL8211x_PHYSTAT_100      0x4000
#define MIIM_RTL8211x_PHYSTAT_DUPLEX   0x2000
#define MIIM_RTL8211x_PHYSTAT_SPDDONE  0x0800
#define MIIM_RTL8211x_PHYSTAT_LINK     0x0400

/* RTL8211x PHY Interrupt Enable Register */
#define MIIM_RTL8211x_PHY_INER         0x12
#define MIIM_RTL8211x_PHY_INTR_ENA     0x9f01
#define MIIM_RTL8211x_PHY_INTR_DIS     0x0000

/* RTL8211x PHY Interrupt Status Register */
#define MIIM_RTL8211x_PHY_INSR         0x13

/* RealTek RTL8211x */
static int rtl8211x_config(struct phy_device *phydev)
{
	phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET);

	/* mask interrupt at init; if the interrupt is
	 * needed indeed, it should be explicitly enabled
	 */
	phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER,
		  MIIM_RTL8211x_PHY_INTR_DIS);

	/* read interrupt status just to clear it */
	phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER);

	genphy_config_aneg(phydev);

	return 0;
}

static int rtl8211x_parse_status(struct phy_device *phydev)
{
	unsigned int speed;
	unsigned int mii_reg;

	mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_STATUS);

	if (!(mii_reg & MIIM_RTL8211x_PHYSTAT_SPDDONE)) {
		int i = 0;

		/* in case of timeout ->link is cleared */
		phydev->link = 1;
		puts("Waiting for PHY realtime link");
		while (!(mii_reg & MIIM_RTL8211x_PHYSTAT_SPDDONE)) {
			/* Timeout reached ? */
			if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
				puts(" TIMEOUT !\n");
				phydev->link = 0;
				break;
			}

			if ((i++ % 1000) == 0)
				putc('.');
			udelay(1000);	/* 1 ms */
			mii_reg = phy_read(phydev, MDIO_DEVAD_NONE,
					MIIM_RTL8211x_PHY_STATUS);
		}
		puts(" done\n");
		udelay(500000);	/* another 500 ms (results in faster booting) */
	} else {
		if (mii_reg & MIIM_RTL8211x_PHYSTAT_LINK)
			phydev->link = 1;
		else
			phydev->link = 0;
	}

	if (mii_reg & MIIM_RTL8211x_PHYSTAT_DUPLEX)
		phydev->duplex = DUPLEX_FULL;
	else
		phydev->duplex = DUPLEX_HALF;

	speed = (mii_reg & MIIM_RTL8211x_PHYSTAT_SPEED);

	switch (speed) {
	case MIIM_RTL8211x_PHYSTAT_GBIT:
		phydev->speed = SPEED_1000;
		break;
	case MIIM_RTL8211x_PHYSTAT_100:
		phydev->speed = SPEED_100;
		break;
	default:
		phydev->speed = SPEED_10;
	}

	return 0;
}

static int rtl8211x_startup(struct phy_device *phydev)
{
	/* Read the Status (2x to make sure link is right) */
	genphy_update_link(phydev);
	rtl8211x_parse_status(phydev);

	return 0;
}

/* Support for RTL8211B PHY */
static struct phy_driver RTL8211B_driver = {
	.name = "RealTek RTL8211B",
	.uid = 0x1cc910,
	.mask = 0xffffff,
	.features = PHY_GBIT_FEATURES,
	.config = &rtl8211x_config,
	.startup = &rtl8211x_startup,
	.shutdown = &genphy_shutdown,
};

/* Support for RTL8211E-VB-CG, RTL8211E-VL-CG and RTL8211EG-VB-CG PHYs */
static struct phy_driver RTL8211E_driver = {
	.name = "RealTek RTL8211E",
	.uid = 0x1cc915,
	.mask = 0xffffff,
	.features = PHY_GBIT_FEATURES,
	.config = &rtl8211x_config,
	.startup = &rtl8211x_startup,
	.shutdown = &genphy_shutdown,
};

/* Support for RTL8211DN PHY */
static struct phy_driver RTL8211DN_driver = {
	.name = "RealTek RTL8211DN",
	.uid = 0x1cc914,
	.mask = 0xffffff,
	.features = PHY_GBIT_FEATURES,
	.config = &rtl8211x_config,
	.startup = &rtl8211x_startup,
	.shutdown = &genphy_shutdown,
};

int phy_realtek_init(void)
{
	phy_register(&RTL8211B_driver);
	phy_register(&RTL8211E_driver);
	phy_register(&RTL8211DN_driver);

	return 0;
}
Commit	Line	Data
9082eeac AF	1	/*
	2	* RealTek PHY drivers
	3	*
1a459660	4	* SPDX-License-Identifier: GPL-2.0+
9082eeac	5	*
3cee1388	6	* Copyright 2010-2011, 2015 Freescale Semiconductor, Inc.
9082eeac	7	* author Andy Fleming
9082eeac AF	8	*/
	9	#include <config.h>
	10	#include <common.h>
	11	#include <phy.h>
	12
	13	#define PHY_AUTONEGOTIATE_TIMEOUT 5000
	14
c624d168 BS	15	/* RTL8211x PHY Status Register */
	16	#define MIIM_RTL8211x_PHY_STATUS 0x11
	17	#define MIIM_RTL8211x_PHYSTAT_SPEED 0xc000
	18	#define MIIM_RTL8211x_PHYSTAT_GBIT 0x8000
	19	#define MIIM_RTL8211x_PHYSTAT_100 0x4000
	20	#define MIIM_RTL8211x_PHYSTAT_DUPLEX 0x2000
	21	#define MIIM_RTL8211x_PHYSTAT_SPDDONE 0x0800
	22	#define MIIM_RTL8211x_PHYSTAT_LINK 0x0400
	23
3cee1388 CC	24	/* RTL8211x PHY Interrupt Enable Register */
	25	#define MIIM_RTL8211x_PHY_INER 0x12
	26	#define MIIM_RTL8211x_PHY_INTR_ENA 0x9f01
	27	#define MIIM_RTL8211x_PHY_INTR_DIS 0x0000
	28
	29	/* RTL8211x PHY Interrupt Status Register */
	30	#define MIIM_RTL8211x_PHY_INSR 0x13
c624d168 BS	31
	32	/* RealTek RTL8211x */
	33	static int rtl8211x_config(struct phy_device *phydev)
9082eeac AF	34	{
	35	phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET);
	36
3cee1388 CC	37	/* mask interrupt at init; if the interrupt is
	38	* needed indeed, it should be explicitly enabled
	39	*/
	40	phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER,
	41	MIIM_RTL8211x_PHY_INTR_DIS);
	42
	43	/* read interrupt status just to clear it */
	44	phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER);
	45
9082eeac AF	46	genphy_config_aneg(phydev);
	47
	48	return 0;
	49	}
	50
c624d168	51	static int rtl8211x_parse_status(struct phy_device *phydev)
9082eeac AF	52	{
	53	unsigned int speed;
	54	unsigned int mii_reg;
	55
c624d168	56	mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_STATUS);
9082eeac	57
c624d168	58	if (!(mii_reg & MIIM_RTL8211x_PHYSTAT_SPDDONE)) {
9082eeac AF	59	int i = 0;
	60
	61	/* in case of timeout ->link is cleared */
	62	phydev->link = 1;
	63	puts("Waiting for PHY realtime link");
c624d168	64	while (!(mii_reg & MIIM_RTL8211x_PHYSTAT_SPDDONE)) {
9082eeac AF	65	/* Timeout reached ? */
	66	if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
	67	puts(" TIMEOUT !\n");
	68	phydev->link = 0;
	69	break;
	70	}
	71
	72	if ((i++ % 1000) == 0)
	73	putc('.');
	74	udelay(1000); /* 1 ms */
	75	mii_reg = phy_read(phydev, MDIO_DEVAD_NONE,
c624d168	76	MIIM_RTL8211x_PHY_STATUS);
9082eeac AF	77	}
	78	puts(" done\n");
	79	udelay(500000); /* another 500 ms (results in faster booting) */
	80	} else {
c624d168	81	if (mii_reg & MIIM_RTL8211x_PHYSTAT_LINK)
9082eeac AF	82	phydev->link = 1;
	83	else
	84	phydev->link = 0;
	85	}
	86
c624d168	87	if (mii_reg & MIIM_RTL8211x_PHYSTAT_DUPLEX)
9082eeac AF	88	phydev->duplex = DUPLEX_FULL;
	89	else
	90	phydev->duplex = DUPLEX_HALF;
	91
c624d168	92	speed = (mii_reg & MIIM_RTL8211x_PHYSTAT_SPEED);
9082eeac AF	93
9082eeac AF	94	switch (speed) {
c624d168	95	case MIIM_RTL8211x_PHYSTAT_GBIT:
9082eeac AF	96	phydev->speed = SPEED_1000;
9082eeac AF	97	break;
c624d168	98	case MIIM_RTL8211x_PHYSTAT_100:
9082eeac AF	99	phydev->speed = SPEED_100;
	100	break;
	101	default:
	102	phydev->speed = SPEED_10;
	103	}
	104
	105	return 0;
	106	}
	107
c624d168	108	static int rtl8211x_startup(struct phy_device *phydev)
9082eeac AF	109	{
	110	/* Read the Status (2x to make sure link is right) */
	111	genphy_update_link(phydev);
c624d168	112	rtl8211x_parse_status(phydev);
9082eeac AF	113
	114	return 0;
	115	}
	116
c624d168	117	/* Support for RTL8211B PHY */
9082eeac AF	118	static struct phy_driver RTL8211B_driver = {
	119	.name = "RealTek RTL8211B",
	120	.uid = 0x1cc910,
42205047	121	.mask = 0xffffff,
9082eeac	122	.features = PHY_GBIT_FEATURES,
c624d168 BS	123	.config = &rtl8211x_config,
	124	.startup = &rtl8211x_startup,
	125	.shutdown = &genphy_shutdown,
	126	};
	127
	128	/* Support for RTL8211E-VB-CG, RTL8211E-VL-CG and RTL8211EG-VB-CG PHYs */
	129	static struct phy_driver RTL8211E_driver = {
	130	.name = "RealTek RTL8211E",
	131	.uid = 0x1cc915,
42205047	132	.mask = 0xffffff,
c624d168 BS	133	.features = PHY_GBIT_FEATURES,
	134	.config = &rtl8211x_config,
	135	.startup = &rtl8211x_startup,
	136	.shutdown = &genphy_shutdown,
	137	};
	138
	139	/* Support for RTL8211DN PHY */
	140	static struct phy_driver RTL8211DN_driver = {
	141	.name = "RealTek RTL8211DN",
	142	.uid = 0x1cc914,
42205047	143	.mask = 0xffffff,
c624d168 BS	144	.features = PHY_GBIT_FEATURES,
	145	.config = &rtl8211x_config,
	146	.startup = &rtl8211x_startup,
9082eeac AF	147	.shutdown = &genphy_shutdown,
	148	};
	149
	150	int phy_realtek_init(void)
	151	{
	152	phy_register(&RTL8211B_driver);
c624d168 BS	153	phy_register(&RTL8211E_driver);
c624d168 BS	154	phy_register(&RTL8211DN_driver);
9082eeac AF	155
	156	return 0;
	157	}