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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>
#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 RTL821x_PAGE_SELECT 0x1f
#define RTL8211E_INER_LINK_STATUS 0x400
#define RTL8211F_INER_LINK_STATUS 0x0010
#define RTL8211F_INSR 0x1d
#define RTL8211F_TX_DELAY 0x100
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, RTL821x_PAGE_SELECT, 0xa43);
err = phy_read(phydev, RTL8211F_INSR);
/* restore to default page 0 */
phy_write(phydev, RTL821x_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)
{
int ret;
u16 reg;
ret = genphy_config_init(phydev);
if (ret < 0)
return ret;
phy_write(phydev, RTL821x_PAGE_SELECT, 0xd08);
reg = phy_read(phydev, 0x11);
/* enable TX-delay for rgmii-id and rgmii-txid, otherwise disable it */
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
reg |= RTL8211F_TX_DELAY;
else
reg &= ~RTL8211F_TX_DELAY;
phy_write(phydev, 0x11, reg);
/* restore to default page 0 */
phy_write(phydev, RTL821x_PAGE_SELECT, 0x0);
return 0;
}
static struct phy_driver realtek_drvs[] = {
{
.phy_id = 0x00008201,
.name = "RTL8201CP Ethernet",
.phy_id_mask = 0x0000ffff,
.features = PHY_BASIC_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = &genphy_config_aneg,
.read_status = &genphy_read_status,
}, {
.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,
}, {
.phy_id = 0x001cc914,
.name = "RTL8211DN 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,
}, {
.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,
}, {
.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,
},
};
module_phy_driver(realtek_drvs);
static struct mdio_device_id __maybe_unused realtek_tbl[] = {
{ 0x001cc912, 0x001fffff },
{ 0x001cc914, 0x001fffff },
{ 0x001cc915, 0x001fffff },
{ 0x001cc916, 0x001fffff },
{ }
};
MODULE_DEVICE_TABLE(mdio, realtek_tbl);
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