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/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 */
16#include <linux/config.h>
17#include <linux/kernel.h>
18#include <linux/sched.h>
19#include <linux/string.h>
20#include <linux/errno.h>
21#include <linux/unistd.h>
22#include <linux/slab.h>
23#include <linux/interrupt.h>
24#include <linux/init.h>
25#include <linux/delay.h>
26#include <linux/netdevice.h>
27#include <linux/etherdevice.h>
28#include <linux/skbuff.h>
29#include <linux/spinlock.h>
30#include <linux/mm.h>
31#include <linux/module.h>
32#include <linux/mii.h>
33#include <linux/ethtool.h>
34#include <linux/phy.h>
35
36#include <asm/io.h>
37#include <asm/irq.h>
38#include <asm/uaccess.h>
39
40/* The Level one LXT970 is used by many boards */
41
42#define MII_LXT970_IER 17 /* Interrupt Enable Register */
43
44#define MII_LXT970_IER_IEN 0x0002
45
46#define MII_LXT970_ISR 18 /* Interrupt Status Register */
47
48#define MII_LXT970_CONFIG 19 /* Configuration Register */
49
50/* ------------------------------------------------------------------------- */
51/* The Level one LXT971 is used on some of my custom boards */
52
53/* register definitions for the 971 */
54#define MII_LXT971_IER 18 /* Interrupt Enable Register */
55#define MII_LXT971_IER_IEN 0x00f2
56
57#define MII_LXT971_ISR 19 /* Interrupt Status Register */
58
59
60MODULE_DESCRIPTION("Intel LXT PHY driver");
61MODULE_AUTHOR("Andy Fleming");
62MODULE_LICENSE("GPL");
63
64static 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
81static 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
93static 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
103static 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
113static 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
125static struct phy_driver lxt970_driver = {
126 .phy_id = 0x07810000,
127 .name = "LXT970",
128 .phy_id_mask = 0x0fffffff,
129 .features = PHY_BASIC_FEATURES,
130 .flags = PHY_HAS_INTERRUPT,
131 .config_init = lxt970_config_init,
132 .config_aneg = genphy_config_aneg,
133 .read_status = genphy_read_status,
134 .ack_interrupt = lxt970_ack_interrupt,
135 .config_intr = lxt970_config_intr,
136 .driver = { .owner = THIS_MODULE,},
137};
138
139static struct phy_driver lxt971_driver = {
140 .phy_id = 0x0001378e,
141 .name = "LXT971",
142 .phy_id_mask = 0x0fffffff,
143 .features = PHY_BASIC_FEATURES,
144 .flags = PHY_HAS_INTERRUPT,
145 .config_aneg = genphy_config_aneg,
146 .read_status = genphy_read_status,
147 .ack_interrupt = lxt971_ack_interrupt,
148 .config_intr = lxt971_config_intr,
149 .driver = { .owner = THIS_MODULE,},
150};
151
152static int __init lxt_init(void)
153{
154 int ret;
155
156 ret = phy_driver_register(&lxt970_driver);
157 if (ret)
158 goto err1;
159
160 ret = phy_driver_register(&lxt971_driver);
161 if (ret)
162 goto err2;
163 return 0;
164
165 err2:
166 phy_driver_unregister(&lxt970_driver);
167 err1:
168 return ret;
169}
170
171static void __exit lxt_exit(void)
172{
173 phy_driver_unregister(&lxt970_driver);
174 phy_driver_unregister(&lxt971_driver);
175}
176
177module_init(lxt_init);
178module_exit(lxt_exit);