1/*
2 * drivers/net/phy/realtek.c
3 *
4 * Driver for Realtek PHYs
5 *
6 * Author: Johnson Leung <r58129@freescale.com>
7 *
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
9 *
10 * This program is free software; you can redistribute  it and/or modify it
11 * under  the terms of  the GNU General  Public License as published by the
12 * Free Software Foundation;  either version 2 of the  License, or (at your
13 * option) any later version.
14 *
15 */
16#include <linux/phy.h>
17#include <linux/module.h>
18
19#define RTL821x_PHYSR		0x11
20#define RTL821x_PHYSR_DUPLEX	0x2000
21#define RTL821x_PHYSR_SPEED	0xc000
22#define RTL821x_INER		0x12
23#define RTL821x_INER_INIT	0x6400
24#define RTL821x_INSR		0x13
25
26#define	RTL8211E_INER_LINK_STATUS	0x400
27
28MODULE_DESCRIPTION("Realtek PHY driver");
29MODULE_AUTHOR("Johnson Leung");
30MODULE_LICENSE("GPL");
31
32static int rtl821x_ack_interrupt(struct phy_device *phydev)
33{
34	int err;
35
36	err = phy_read(phydev, RTL821x_INSR);
37
38	return (err < 0) ? err : 0;
39}
40
41static int rtl8211b_config_intr(struct phy_device *phydev)
42{
43	int err;
44
45	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
46		err = phy_write(phydev, RTL821x_INER,
47				RTL821x_INER_INIT);
48	else
49		err = phy_write(phydev, RTL821x_INER, 0);
50
51	return err;
52}
53
54static int rtl8211e_config_intr(struct phy_device *phydev)
55{
56	int err;
57
58	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
59		err = phy_write(phydev, RTL821x_INER,
60				RTL8211E_INER_LINK_STATUS);
61	else
62		err = phy_write(phydev, RTL821x_INER, 0);
63
64	return err;
65}
66
67static struct phy_driver realtek_drvs[] = {
68	{
69		.phy_id         = 0x00008201,
70		.name           = "RTL8201CP Ethernet",
71		.phy_id_mask    = 0x0000ffff,
72		.features       = PHY_BASIC_FEATURES,
73		.flags          = PHY_HAS_INTERRUPT,
74		.config_aneg    = &genphy_config_aneg,
75		.read_status    = &genphy_read_status,
76		.driver         = { .owner = THIS_MODULE,},
77	}, {
78		.phy_id		= 0x001cc912,
79		.name		= "RTL8211B Gigabit Ethernet",
80		.phy_id_mask	= 0x001fffff,
81		.features	= PHY_GBIT_FEATURES,
82		.flags		= PHY_HAS_INTERRUPT,
83		.config_aneg	= &genphy_config_aneg,
84		.read_status	= &genphy_read_status,
85		.ack_interrupt	= &rtl821x_ack_interrupt,
86		.config_intr	= &rtl8211b_config_intr,
87		.driver		= { .owner = THIS_MODULE,},
88	}, {
89		.phy_id		= 0x001cc915,
90		.name		= "RTL8211E Gigabit Ethernet",
91		.phy_id_mask	= 0x001fffff,
92		.features	= PHY_GBIT_FEATURES,
93		.flags		= PHY_HAS_INTERRUPT,
94		.config_aneg	= &genphy_config_aneg,
95		.read_status	= &genphy_read_status,
96		.ack_interrupt	= &rtl821x_ack_interrupt,
97		.config_intr	= &rtl8211e_config_intr,
98		.suspend	= genphy_suspend,
99		.resume		= genphy_resume,
100		.driver		= { .owner = THIS_MODULE,},
101	},
102};
103
104module_phy_driver(realtek_drvs);
105
106static struct mdio_device_id __maybe_unused realtek_tbl[] = {
107	{ 0x001cc912, 0x001fffff },
108	{ 0x001cc915, 0x001fffff },
109	{ }
110};
111
112MODULE_DEVICE_TABLE(mdio, realtek_tbl);
113