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/*
* drivers/net/phy/realtek.c
*
* Driver for Realtek PHYs
*
* Author: Johnson Leung <r58129@freescale.com>
*
* 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/phy.h>
#include <linux/module.h>
#include <linux/delay.h>
#define RTL821x_PHYSR 0x11
#define RTL821x_PHYSR_DUPLEX 0x2000
#define RTL821x_PHYSR_SPEED 0xc000
#define RTL821x_INER 0x12
#define RTL821x_INER_INIT 0x6400
#define RTL821x_INSR 0x13
#define RTL8211E_INER_LINK_STATUS 0x0400
#define RTL8211F_INER_LINK_STATUS 0x0010
#define RTL8211F_INSR 0x1d
#define RTL8211F_PAGE_SELECT 0x1f
#define RTL8211F_PHY_STATUS 0x1a
#define RTL8211F_PHYSTAT_SPEED 0x0030
#define RTL8211F_PHYSTAT_GBIT 0x0020
#define RTL8211F_PHYSTAT_100 0x0010
#define RTL8211F_PHYSTAT_DUPLEX 0x0008
#define RTL8211F_PHYSTAT_SPDDONE 0x0800
#define RTL8211F_PHYSTAT_LINK 0x0004
#define PHY_AUTONEGOTIATE_TIMEOUT 3000
MODULE_DESCRIPTION("Realtek PHY driver");
MODULE_AUTHOR("Johnson Leung");
MODULE_LICENSE("GPL");
static int rtl821x_ack_interrupt(struct phy_device *phydev)
{
int err;
err = phy_read(phydev, RTL821x_INSR);
return (err < 0) ? err : 0;
}
static int rtl8211f_ack_interrupt(struct phy_device *phydev)
{
int err;
phy_write(phydev, RTL8211F_PAGE_SELECT, 0xa43);
err = phy_read(phydev, RTL8211F_INSR);
/* restore to default page 0 */
phy_write(phydev, RTL8211F_PAGE_SELECT, 0x0);
return (err < 0) ? err : 0;
}
static int rtl8211b_config_intr(struct phy_device *phydev)
{
int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
err = phy_write(phydev, RTL821x_INER,
RTL821x_INER_INIT);
else
err = phy_write(phydev, RTL821x_INER, 0);
return err;
}
static int rtl8211e_config_intr(struct phy_device *phydev)
{
int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
err = phy_write(phydev, RTL821x_INER,
RTL8211E_INER_LINK_STATUS);
else
err = phy_write(phydev, RTL821x_INER, 0);
return err;
}
static int rtl8211f_config_intr(struct phy_device *phydev)
{
int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
err = phy_write(phydev, RTL821x_INER,
RTL8211F_INER_LINK_STATUS);
else
err = phy_write(phydev, RTL821x_INER, 0);
return err;
}
static int rtl8211f_config_init(struct phy_device *phydev)
{
unsigned int speed, mii_reg;
int i = 0;
phy_write(phydev, RTL8211F_PAGE_SELECT, 0xa43);
mii_reg = phy_read(phydev, RTL8211F_PHY_STATUS);
phydev->link = 1;
while (!(mii_reg & RTL8211F_PHYSTAT_LINK)) {
if (i++ > PHY_AUTONEGOTIATE_TIMEOUT) {
pr_warn("RTL8211F LINK TIMEOUT\n");
phydev->link = 0;
break;
}
udelay(1000);
mii_reg = phy_read(phydev, RTL8211F_PHY_STATUS);
}
if (mii_reg & RTL8211F_PHYSTAT_DUPLEX)
phydev->duplex = DUPLEX_FULL;
else
phydev->duplex = DUPLEX_HALF;
speed = (mii_reg & RTL8211F_PHYSTAT_SPEED);
switch (speed) {
case RTL8211F_PHYSTAT_GBIT:
phydev->speed = SPEED_1000;
break;
case RTL8211F_PHYSTAT_100:
phydev->speed = SPEED_100;
break;
default:
phydev->speed = SPEED_10;
}
if (phydev->interface == PHY_INTERFACE_MODE_RGMII) {
udelay(2000);
/* enable TXDLY */
phy_write(phydev, RTL8211F_PAGE_SELECT, 0xd08);
udelay(2000);
phy_write(phydev, 0x11, 0x109);
/* restore to default page 0 */
phy_write(phydev, RTL8211F_PAGE_SELECT, 0x0);
}
return 0;
}
static struct phy_driver realtek_drivers[] = {
{ /* RTL8211B */
.phy_id = 0x001cc912,
.name = "RTL8211B Gigabit Ethernet",
.phy_id_mask = 0x001fffff,
.features = PHY_GBIT_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = &genphy_config_aneg,
.read_status = &genphy_read_status,
.ack_interrupt = &rtl821x_ack_interrupt,
.config_intr = &rtl8211b_config_intr,
.driver = { .owner = THIS_MODULE },
},
{ /* RTL8211E */
.phy_id = 0x001cc915,
.name = "RTL8211E Gigabit Ethernet",
.phy_id_mask = 0x001fffff,
.features = PHY_GBIT_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = &genphy_config_aneg,
.read_status = &genphy_read_status,
.ack_interrupt = &rtl821x_ack_interrupt,
.config_intr = &rtl8211e_config_intr,
.suspend = genphy_suspend,
.resume = genphy_resume,
.driver = { .owner = THIS_MODULE },
},
{ /* RTL8211F */
.phy_id = 0x001cc916,
.name = "RTL8211F Gigabit Ethernet",
.phy_id_mask = 0x001fffff,
.features = PHY_GBIT_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = &genphy_config_aneg,
.config_init = &rtl8211f_config_init,
.read_status = &genphy_read_status,
.ack_interrupt = &rtl8211f_ack_interrupt,
.config_intr = &rtl8211f_config_intr,
.suspend = genphy_suspend,
.resume = genphy_resume,
.driver = { .owner = THIS_MODULE },
},
};
static int __init realtek_init(void)
{
return phy_drivers_register(realtek_drivers,
ARRAY_SIZE(realtek_drivers));
}
static void __exit realtek_exit(void)
{
phy_drivers_unregister(realtek_drivers,
ARRAY_SIZE(realtek_drivers));
}
module_init(realtek_init);
module_exit(realtek_exit);
static struct mdio_device_id __maybe_unused realtek_tbl[] = {
{ 0x001cc912, 0x001fffff },
{ 0x001cc915, 0x001fffff },
{ 0x001cc916, 0x001fffff },
{ }
};
MODULE_DEVICE_TABLE(mdio, realtek_tbl);
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