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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> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/interrupt.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/netdevice.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/skbuff.h> | |
27 | #include <linux/spinlock.h> | |
28 | #include <linux/mm.h> | |
29 | #include <linux/module.h> | |
00db8189 AF |
30 | #include <linux/mii.h> |
31 | #include <linux/ethtool.h> | |
32 | #include <linux/phy.h> | |
33 | ||
34 | #include <asm/io.h> | |
35 | #include <asm/irq.h> | |
36 | #include <asm/uaccess.h> | |
37 | ||
38 | /* The Level one LXT970 is used by many boards */ | |
39 | ||
40 | #define MII_LXT970_IER 17 /* Interrupt Enable Register */ | |
41 | ||
42 | #define MII_LXT970_IER_IEN 0x0002 | |
43 | ||
44 | #define MII_LXT970_ISR 18 /* Interrupt Status Register */ | |
45 | ||
46 | #define MII_LXT970_CONFIG 19 /* Configuration Register */ | |
47 | ||
48 | /* ------------------------------------------------------------------------- */ | |
49 | /* The Level one LXT971 is used on some of my custom boards */ | |
50 | ||
51 | /* register definitions for the 971 */ | |
52 | #define MII_LXT971_IER 18 /* Interrupt Enable Register */ | |
53 | #define MII_LXT971_IER_IEN 0x00f2 | |
54 | ||
55 | #define MII_LXT971_ISR 19 /* Interrupt Status Register */ | |
56 | ||
57 | ||
58 | MODULE_DESCRIPTION("Intel LXT PHY driver"); | |
59 | MODULE_AUTHOR("Andy Fleming"); | |
60 | MODULE_LICENSE("GPL"); | |
61 | ||
62 | static int lxt970_ack_interrupt(struct phy_device *phydev) | |
63 | { | |
64 | int err; | |
65 | ||
66 | err = phy_read(phydev, MII_BMSR); | |
67 | ||
68 | if (err < 0) | |
69 | return err; | |
70 | ||
71 | err = phy_read(phydev, MII_LXT970_ISR); | |
72 | ||
73 | if (err < 0) | |
74 | return err; | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
79 | static int lxt970_config_intr(struct phy_device *phydev) | |
80 | { | |
81 | int err; | |
82 | ||
83 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
84 | err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN); | |
85 | else | |
86 | err = phy_write(phydev, MII_LXT970_IER, 0); | |
87 | ||
88 | return err; | |
89 | } | |
90 | ||
91 | static int lxt970_config_init(struct phy_device *phydev) | |
92 | { | |
93 | int err; | |
94 | ||
95 | err = phy_write(phydev, MII_LXT970_CONFIG, 0); | |
96 | ||
97 | return err; | |
98 | } | |
99 | ||
100 | ||
101 | static int lxt971_ack_interrupt(struct phy_device *phydev) | |
102 | { | |
103 | int err = phy_read(phydev, MII_LXT971_ISR); | |
104 | ||
105 | if (err < 0) | |
106 | return err; | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | static int lxt971_config_intr(struct phy_device *phydev) | |
112 | { | |
113 | int err; | |
114 | ||
115 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
116 | err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN); | |
117 | else | |
118 | err = phy_write(phydev, MII_LXT971_IER, 0); | |
119 | ||
120 | return err; | |
121 | } | |
122 | ||
123 | static struct phy_driver lxt970_driver = { | |
600991b0 | 124 | .phy_id = 0x78100000, |
00db8189 | 125 | .name = "LXT970", |
600991b0 | 126 | .phy_id_mask = 0xfffffff0, |
00db8189 AF |
127 | .features = PHY_BASIC_FEATURES, |
128 | .flags = PHY_HAS_INTERRUPT, | |
129 | .config_init = lxt970_config_init, | |
130 | .config_aneg = genphy_config_aneg, | |
131 | .read_status = genphy_read_status, | |
132 | .ack_interrupt = lxt970_ack_interrupt, | |
133 | .config_intr = lxt970_config_intr, | |
134 | .driver = { .owner = THIS_MODULE,}, | |
135 | }; | |
136 | ||
137 | static struct phy_driver lxt971_driver = { | |
600991b0 | 138 | .phy_id = 0x001378e0, |
00db8189 | 139 | .name = "LXT971", |
600991b0 | 140 | .phy_id_mask = 0xfffffff0, |
00db8189 AF |
141 | .features = PHY_BASIC_FEATURES, |
142 | .flags = PHY_HAS_INTERRUPT, | |
143 | .config_aneg = genphy_config_aneg, | |
144 | .read_status = genphy_read_status, | |
145 | .ack_interrupt = lxt971_ack_interrupt, | |
146 | .config_intr = lxt971_config_intr, | |
147 | .driver = { .owner = THIS_MODULE,}, | |
148 | }; | |
149 | ||
150 | static int __init lxt_init(void) | |
151 | { | |
152 | int ret; | |
153 | ||
154 | ret = phy_driver_register(&lxt970_driver); | |
155 | if (ret) | |
156 | goto err1; | |
157 | ||
158 | ret = phy_driver_register(&lxt971_driver); | |
159 | if (ret) | |
160 | goto err2; | |
161 | return 0; | |
162 | ||
163 | err2: | |
164 | phy_driver_unregister(&lxt970_driver); | |
165 | err1: | |
166 | return ret; | |
167 | } | |
168 | ||
169 | static void __exit lxt_exit(void) | |
170 | { | |
171 | phy_driver_unregister(&lxt970_driver); | |
172 | phy_driver_unregister(&lxt971_driver); | |
173 | } | |
174 | ||
175 | module_init(lxt_init); | |
176 | module_exit(lxt_exit); |