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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 | ||
56 | ||
57 | MODULE_DESCRIPTION("Intel LXT PHY driver"); | |
58 | MODULE_AUTHOR("Andy Fleming"); | |
59 | MODULE_LICENSE("GPL"); | |
60 | ||
61 | static int lxt970_ack_interrupt(struct phy_device *phydev) | |
62 | { | |
63 | int err; | |
64 | ||
65 | err = phy_read(phydev, MII_BMSR); | |
66 | ||
67 | if (err < 0) | |
68 | return err; | |
69 | ||
70 | err = phy_read(phydev, MII_LXT970_ISR); | |
71 | ||
72 | if (err < 0) | |
73 | return err; | |
74 | ||
75 | return 0; | |
76 | } | |
77 | ||
78 | static int lxt970_config_intr(struct phy_device *phydev) | |
79 | { | |
80 | int err; | |
81 | ||
82 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
83 | err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN); | |
84 | else | |
85 | err = phy_write(phydev, MII_LXT970_IER, 0); | |
86 | ||
87 | return err; | |
88 | } | |
89 | ||
90 | static int lxt970_config_init(struct phy_device *phydev) | |
91 | { | |
92 | int err; | |
93 | ||
94 | err = phy_write(phydev, MII_LXT970_CONFIG, 0); | |
95 | ||
96 | return err; | |
97 | } | |
98 | ||
99 | ||
100 | static int lxt971_ack_interrupt(struct phy_device *phydev) | |
101 | { | |
102 | int err = phy_read(phydev, MII_LXT971_ISR); | |
103 | ||
104 | if (err < 0) | |
105 | return err; | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
110 | static int lxt971_config_intr(struct phy_device *phydev) | |
111 | { | |
112 | int err; | |
113 | ||
114 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
115 | err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN); | |
116 | else | |
117 | err = phy_write(phydev, MII_LXT971_IER, 0); | |
118 | ||
119 | return err; | |
120 | } | |
121 | ||
122 | static struct phy_driver lxt970_driver = { | |
600991b0 | 123 | .phy_id = 0x78100000, |
00db8189 | 124 | .name = "LXT970", |
600991b0 | 125 | .phy_id_mask = 0xfffffff0, |
00db8189 AF |
126 | .features = PHY_BASIC_FEATURES, |
127 | .flags = PHY_HAS_INTERRUPT, | |
128 | .config_init = lxt970_config_init, | |
129 | .config_aneg = genphy_config_aneg, | |
130 | .read_status = genphy_read_status, | |
131 | .ack_interrupt = lxt970_ack_interrupt, | |
132 | .config_intr = lxt970_config_intr, | |
133 | .driver = { .owner = THIS_MODULE,}, | |
134 | }; | |
135 | ||
136 | static struct phy_driver lxt971_driver = { | |
600991b0 | 137 | .phy_id = 0x001378e0, |
00db8189 | 138 | .name = "LXT971", |
600991b0 | 139 | .phy_id_mask = 0xfffffff0, |
00db8189 AF |
140 | .features = PHY_BASIC_FEATURES, |
141 | .flags = PHY_HAS_INTERRUPT, | |
142 | .config_aneg = genphy_config_aneg, | |
143 | .read_status = genphy_read_status, | |
144 | .ack_interrupt = lxt971_ack_interrupt, | |
145 | .config_intr = lxt971_config_intr, | |
146 | .driver = { .owner = THIS_MODULE,}, | |
147 | }; | |
148 | ||
149 | static int __init lxt_init(void) | |
150 | { | |
151 | int ret; | |
152 | ||
153 | ret = phy_driver_register(&lxt970_driver); | |
154 | if (ret) | |
155 | goto err1; | |
156 | ||
157 | ret = phy_driver_register(&lxt971_driver); | |
158 | if (ret) | |
159 | goto err2; | |
160 | return 0; | |
161 | ||
162 | err2: | |
163 | phy_driver_unregister(&lxt970_driver); | |
164 | err1: | |
165 | return ret; | |
166 | } | |
167 | ||
168 | static void __exit lxt_exit(void) | |
169 | { | |
170 | phy_driver_unregister(&lxt970_driver); | |
171 | phy_driver_unregister(&lxt971_driver); | |
172 | } | |
173 | ||
174 | module_init(lxt_init); | |
175 | module_exit(lxt_exit); |