tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#define RTL8211E_INER_LINK_STATUS 0x400
26
27#define RTL8211F_INER_LINK_STATUS 0x0010
28#define RTL8211F_INSR 0x1d
29#define RTL8211F_PAGE_SELECT 0x1f
30#define RTL8211F_TX_DELAY 0x100
31
32MODULE_DESCRIPTION("Realtek PHY driver");
33MODULE_AUTHOR("Johnson Leung");
34MODULE_LICENSE("GPL");
35
36static int rtl821x_ack_interrupt(struct phy_device *phydev)
37{
38 int err;
39
40 err = phy_read(phydev, RTL821x_INSR);
41
42 return (err < 0) ? err : 0;
43}
44
45static int rtl8211f_ack_interrupt(struct phy_device *phydev)
46{
47 int err;
48
49 phy_write(phydev, RTL8211F_PAGE_SELECT, 0xa43);
50 err = phy_read(phydev, RTL8211F_INSR);
51 /* restore to default page 0 */
52 phy_write(phydev, RTL8211F_PAGE_SELECT, 0x0);
53
54 return (err < 0) ? err : 0;
55}
56
57static int rtl8211b_config_intr(struct phy_device *phydev)
58{
59 int err;
60
61 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
62 err = phy_write(phydev, RTL821x_INER,
63 RTL821x_INER_INIT);
64 else
65 err = phy_write(phydev, RTL821x_INER, 0);
66
67 return err;
68}
69
70static int rtl8211e_config_intr(struct phy_device *phydev)
71{
72 int err;
73
74 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
75 err = phy_write(phydev, RTL821x_INER,
76 RTL8211E_INER_LINK_STATUS);
77 else
78 err = phy_write(phydev, RTL821x_INER, 0);
79
80 return err;
81}
82
83static int rtl8211f_config_intr(struct phy_device *phydev)
84{
85 int err;
86
87 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
88 err = phy_write(phydev, RTL821x_INER,
89 RTL8211F_INER_LINK_STATUS);
90 else
91 err = phy_write(phydev, RTL821x_INER, 0);
92
93 return err;
94}
95
96static int rtl8211f_config_init(struct phy_device *phydev)
97{
98 int ret;
99 u16 reg;
100
101 ret = genphy_config_init(phydev);
102 if (ret < 0)
103 return ret;
104
105 phy_write(phydev, RTL8211F_PAGE_SELECT, 0xd08);
106 reg = phy_read(phydev, 0x11);
107
108 /* enable TX-delay for rgmii-id and rgmii-txid, otherwise disable it */
109 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
110 phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
111 reg |= RTL8211F_TX_DELAY;
112 else
113 reg &= ~RTL8211F_TX_DELAY;
114
115 phy_write(phydev, 0x11, reg);
116 /* restore to default page 0 */
117 phy_write(phydev, RTL8211F_PAGE_SELECT, 0x0);
118
119 return 0;
120}
121
122static struct phy_driver realtek_drvs[] = {
123 {
124 .phy_id = 0x00008201,
125 .name = "RTL8201CP Ethernet",
126 .phy_id_mask = 0x0000ffff,
127 .features = PHY_BASIC_FEATURES,
128 .flags = PHY_HAS_INTERRUPT,
129 .config_aneg = &genphy_config_aneg,
130 .read_status = &genphy_read_status,
131 }, {
132 .phy_id = 0x001cc912,
133 .name = "RTL8211B Gigabit Ethernet",
134 .phy_id_mask = 0x001fffff,
135 .features = PHY_GBIT_FEATURES,
136 .flags = PHY_HAS_INTERRUPT,
137 .config_aneg = &genphy_config_aneg,
138 .read_status = &genphy_read_status,
139 .ack_interrupt = &rtl821x_ack_interrupt,
140 .config_intr = &rtl8211b_config_intr,
141 }, {
142 .phy_id = 0x001cc914,
143 .name = "RTL8211DN Gigabit Ethernet",
144 .phy_id_mask = 0x001fffff,
145 .features = PHY_GBIT_FEATURES,
146 .flags = PHY_HAS_INTERRUPT,
147 .config_aneg = genphy_config_aneg,
148 .read_status = genphy_read_status,
149 .ack_interrupt = rtl821x_ack_interrupt,
150 .config_intr = rtl8211e_config_intr,
151 .suspend = genphy_suspend,
152 .resume = genphy_resume,
153 }, {
154 .phy_id = 0x001cc915,
155 .name = "RTL8211E Gigabit Ethernet",
156 .phy_id_mask = 0x001fffff,
157 .features = PHY_GBIT_FEATURES,
158 .flags = PHY_HAS_INTERRUPT,
159 .config_aneg = &genphy_config_aneg,
160 .read_status = &genphy_read_status,
161 .ack_interrupt = &rtl821x_ack_interrupt,
162 .config_intr = &rtl8211e_config_intr,
163 .suspend = genphy_suspend,
164 .resume = genphy_resume,
165 }, {
166 .phy_id = 0x001cc916,
167 .name = "RTL8211F Gigabit Ethernet",
168 .phy_id_mask = 0x001fffff,
169 .features = PHY_GBIT_FEATURES,
170 .flags = PHY_HAS_INTERRUPT,
171 .config_aneg = &genphy_config_aneg,
172 .config_init = &rtl8211f_config_init,
173 .read_status = &genphy_read_status,
174 .ack_interrupt = &rtl8211f_ack_interrupt,
175 .config_intr = &rtl8211f_config_intr,
176 .suspend = genphy_suspend,
177 .resume = genphy_resume,
178 },
179};
180
181module_phy_driver(realtek_drvs);
182
183static struct mdio_device_id __maybe_unused realtek_tbl[] = {
184 { 0x001cc912, 0x001fffff },
185 { 0x001cc914, 0x001fffff },
186 { 0x001cc915, 0x001fffff },
187 { 0x001cc916, 0x001fffff },
188 { }
189};
190
191MODULE_DEVICE_TABLE(mdio, realtek_tbl);