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00db8189 AF |
1 | /* |
2 | * drivers/net/phy/lxt.c | |
3 | * | |
4 | * Driver for Intel LXT PHYs | |
5 | * | |
6 | * Author: Andy Fleming | |
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 | */ | |
00db8189 | 16 | #include <linux/kernel.h> |
00db8189 AF |
17 | #include <linux/string.h> |
18 | #include <linux/errno.h> | |
19 | #include <linux/unistd.h> | |
00db8189 AF |
20 | #include <linux/interrupt.h> |
21 | #include <linux/init.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/netdevice.h> | |
24 | #include <linux/etherdevice.h> | |
25 | #include <linux/skbuff.h> | |
26 | #include <linux/spinlock.h> | |
27 | #include <linux/mm.h> | |
28 | #include <linux/module.h> | |
00db8189 AF |
29 | #include <linux/mii.h> |
30 | #include <linux/ethtool.h> | |
31 | #include <linux/phy.h> | |
32 | ||
33 | #include <asm/io.h> | |
34 | #include <asm/irq.h> | |
35 | #include <asm/uaccess.h> | |
36 | ||
37 | /* The Level one LXT970 is used by many boards */ | |
38 | ||
39 | #define MII_LXT970_IER 17 /* Interrupt Enable Register */ | |
40 | ||
41 | #define MII_LXT970_IER_IEN 0x0002 | |
42 | ||
43 | #define MII_LXT970_ISR 18 /* Interrupt Status Register */ | |
44 | ||
45 | #define MII_LXT970_CONFIG 19 /* Configuration Register */ | |
46 | ||
47 | /* ------------------------------------------------------------------------- */ | |
48 | /* The Level one LXT971 is used on some of my custom boards */ | |
49 | ||
50 | /* register definitions for the 971 */ | |
51 | #define MII_LXT971_IER 18 /* Interrupt Enable Register */ | |
52 | #define MII_LXT971_IER_IEN 0x00f2 | |
53 | ||
54 | #define MII_LXT971_ISR 19 /* Interrupt Status Register */ | |
55 | ||
e13647c1 RC |
56 | /* register definitions for the 973 */ |
57 | #define MII_LXT973_PCR 16 /* Port Configuration Register */ | |
58 | #define PCR_FIBER_SELECT 1 | |
00db8189 AF |
59 | |
60 | MODULE_DESCRIPTION("Intel LXT PHY driver"); | |
61 | MODULE_AUTHOR("Andy Fleming"); | |
62 | MODULE_LICENSE("GPL"); | |
63 | ||
64 | static int lxt970_ack_interrupt(struct phy_device *phydev) | |
65 | { | |
66 | int err; | |
67 | ||
68 | err = phy_read(phydev, MII_BMSR); | |
69 | ||
70 | if (err < 0) | |
71 | return err; | |
72 | ||
73 | err = phy_read(phydev, MII_LXT970_ISR); | |
74 | ||
75 | if (err < 0) | |
76 | return err; | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
81 | static int lxt970_config_intr(struct phy_device *phydev) | |
82 | { | |
83 | int err; | |
84 | ||
85 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
86 | err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN); | |
87 | else | |
88 | err = phy_write(phydev, MII_LXT970_IER, 0); | |
89 | ||
90 | return err; | |
91 | } | |
92 | ||
93 | static int lxt970_config_init(struct phy_device *phydev) | |
94 | { | |
95 | int err; | |
96 | ||
97 | err = phy_write(phydev, MII_LXT970_CONFIG, 0); | |
98 | ||
99 | return err; | |
100 | } | |
101 | ||
102 | ||
103 | static int lxt971_ack_interrupt(struct phy_device *phydev) | |
104 | { | |
105 | int err = phy_read(phydev, MII_LXT971_ISR); | |
106 | ||
107 | if (err < 0) | |
108 | return err; | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
113 | static int lxt971_config_intr(struct phy_device *phydev) | |
114 | { | |
115 | int err; | |
116 | ||
117 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
118 | err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN); | |
119 | else | |
120 | err = phy_write(phydev, MII_LXT971_IER, 0); | |
121 | ||
122 | return err; | |
123 | } | |
124 | ||
e13647c1 RC |
125 | static int lxt973_probe(struct phy_device *phydev) |
126 | { | |
127 | int val = phy_read(phydev, MII_LXT973_PCR); | |
128 | ||
129 | if (val & PCR_FIBER_SELECT) { | |
130 | /* | |
131 | * If fiber is selected, then the only correct setting | |
132 | * is 100Mbps, full duplex, and auto negotiation off. | |
133 | */ | |
134 | val = phy_read(phydev, MII_BMCR); | |
135 | val |= (BMCR_SPEED100 | BMCR_FULLDPLX); | |
136 | val &= ~BMCR_ANENABLE; | |
137 | phy_write(phydev, MII_BMCR, val); | |
138 | /* Remember that the port is in fiber mode. */ | |
139 | phydev->priv = lxt973_probe; | |
140 | } else { | |
141 | phydev->priv = NULL; | |
142 | } | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static int lxt973_config_aneg(struct phy_device *phydev) | |
147 | { | |
148 | /* Do nothing if port is in fiber mode. */ | |
149 | return phydev->priv ? 0 : genphy_config_aneg(phydev); | |
150 | } | |
151 | ||
00db8189 | 152 | static struct phy_driver lxt970_driver = { |
600991b0 | 153 | .phy_id = 0x78100000, |
00db8189 | 154 | .name = "LXT970", |
600991b0 | 155 | .phy_id_mask = 0xfffffff0, |
00db8189 AF |
156 | .features = PHY_BASIC_FEATURES, |
157 | .flags = PHY_HAS_INTERRUPT, | |
158 | .config_init = lxt970_config_init, | |
159 | .config_aneg = genphy_config_aneg, | |
160 | .read_status = genphy_read_status, | |
161 | .ack_interrupt = lxt970_ack_interrupt, | |
162 | .config_intr = lxt970_config_intr, | |
163 | .driver = { .owner = THIS_MODULE,}, | |
164 | }; | |
165 | ||
166 | static struct phy_driver lxt971_driver = { | |
600991b0 | 167 | .phy_id = 0x001378e0, |
00db8189 | 168 | .name = "LXT971", |
600991b0 | 169 | .phy_id_mask = 0xfffffff0, |
00db8189 AF |
170 | .features = PHY_BASIC_FEATURES, |
171 | .flags = PHY_HAS_INTERRUPT, | |
172 | .config_aneg = genphy_config_aneg, | |
173 | .read_status = genphy_read_status, | |
174 | .ack_interrupt = lxt971_ack_interrupt, | |
175 | .config_intr = lxt971_config_intr, | |
176 | .driver = { .owner = THIS_MODULE,}, | |
177 | }; | |
178 | ||
e13647c1 RC |
179 | static struct phy_driver lxt973_driver = { |
180 | .phy_id = 0x00137a10, | |
181 | .name = "LXT973", | |
182 | .phy_id_mask = 0xfffffff0, | |
183 | .features = PHY_BASIC_FEATURES, | |
184 | .flags = 0, | |
185 | .probe = lxt973_probe, | |
186 | .config_aneg = lxt973_config_aneg, | |
187 | .read_status = genphy_read_status, | |
188 | .driver = { .owner = THIS_MODULE,}, | |
189 | }; | |
190 | ||
00db8189 AF |
191 | static int __init lxt_init(void) |
192 | { | |
193 | int ret; | |
194 | ||
195 | ret = phy_driver_register(&lxt970_driver); | |
196 | if (ret) | |
197 | goto err1; | |
198 | ||
199 | ret = phy_driver_register(&lxt971_driver); | |
200 | if (ret) | |
201 | goto err2; | |
e13647c1 RC |
202 | |
203 | ret = phy_driver_register(&lxt973_driver); | |
204 | if (ret) | |
205 | goto err3; | |
00db8189 AF |
206 | return 0; |
207 | ||
e13647c1 RC |
208 | err3: |
209 | phy_driver_unregister(&lxt971_driver); | |
210 | err2: | |
00db8189 AF |
211 | phy_driver_unregister(&lxt970_driver); |
212 | err1: | |
213 | return ret; | |
214 | } | |
215 | ||
216 | static void __exit lxt_exit(void) | |
217 | { | |
218 | phy_driver_unregister(&lxt970_driver); | |
219 | phy_driver_unregister(&lxt971_driver); | |
e13647c1 | 220 | phy_driver_unregister(&lxt973_driver); |
00db8189 AF |
221 | } |
222 | ||
223 | module_init(lxt_init); | |
224 | module_exit(lxt_exit); | |
4e4f10f6 DW |
225 | |
226 | static struct mdio_device_id lxt_tbl[] = { | |
227 | { 0x78100000, 0xfffffff0 }, | |
228 | { 0x001378e0, 0xfffffff0 }, | |
e2f5b045 | 229 | { 0x00137a10, 0xfffffff0 }, |
4e4f10f6 DW |
230 | { } |
231 | }; | |
232 | ||
233 | MODULE_DEVICE_TABLE(mdio, lxt_tbl); |