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/kernel.h>
17#include <linux/sched.h>
18#include <linux/string.h>
19#include <linux/errno.h>
20#include <linux/unistd.h>
21#include <linux/slab.h>
22#include <linux/interrupt.h>
23#include <linux/init.h>
24#include <linux/delay.h>
25#include <linux/netdevice.h>
26#include <linux/etherdevice.h>
27#include <linux/skbuff.h>
28#include <linux/spinlock.h>
29#include <linux/mm.h>
30#include <linux/module.h>
31#include <linux/mii.h>
32#include <linux/ethtool.h>
33#include <linux/phy.h>
34
35#include <asm/io.h>
36#include <asm/irq.h>
37#include <asm/uaccess.h>
38
39/* The Level one LXT970 is used by many boards */
40
41#define MII_LXT970_IER 17 /* Interrupt Enable Register */
42
43#define MII_LXT970_IER_IEN 0x0002
44
45#define MII_LXT970_ISR 18 /* Interrupt Status Register */
46
47#define MII_LXT970_CONFIG 19 /* Configuration Register */
48
49/* ------------------------------------------------------------------------- */
50/* The Level one LXT971 is used on some of my custom boards */
51
52/* register definitions for the 971 */
53#define MII_LXT971_IER 18 /* Interrupt Enable Register */
54#define MII_LXT971_IER_IEN 0x00f2
55
56#define MII_LXT971_ISR 19 /* Interrupt Status Register */
57
58
59MODULE_DESCRIPTION("Intel LXT PHY driver");
60MODULE_AUTHOR("Andy Fleming");
61MODULE_LICENSE("GPL");
62
63static int lxt970_ack_interrupt(struct phy_device *phydev)
64{
65 int err;
66
67 err = phy_read(phydev, MII_BMSR);
68
69 if (err < 0)
70 return err;
71
72 err = phy_read(phydev, MII_LXT970_ISR);
73
74 if (err < 0)
75 return err;
76
77 return 0;
78}
79
80static int lxt970_config_intr(struct phy_device *phydev)
81{
82 int err;
83
84 if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
85 err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN);
86 else
87 err = phy_write(phydev, MII_LXT970_IER, 0);
88
89 return err;
90}
91
92static int lxt970_config_init(struct phy_device *phydev)
93{
94 int err;
95
96 err = phy_write(phydev, MII_LXT970_CONFIG, 0);
97
98 return err;
99}
100
101
102static int lxt971_ack_interrupt(struct phy_device *phydev)
103{
104 int err = phy_read(phydev, MII_LXT971_ISR);
105
106 if (err < 0)
107 return err;
108
109 return 0;
110}
111
112static int lxt971_config_intr(struct phy_device *phydev)
113{
114 int err;
115
116 if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
117 err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN);
118 else
119 err = phy_write(phydev, MII_LXT971_IER, 0);
120
121 return err;
122}
123
124static struct phy_driver lxt970_driver = {
125 .phy_id = 0x78100000,
126 .name = "LXT970",
127 .phy_id_mask = 0xfffffff0,
128 .features = PHY_BASIC_FEATURES,
129 .flags = PHY_HAS_INTERRUPT,
130 .config_init = lxt970_config_init,
131 .config_aneg = genphy_config_aneg,
132 .read_status = genphy_read_status,
133 .ack_interrupt = lxt970_ack_interrupt,
134 .config_intr = lxt970_config_intr,
135 .driver = { .owner = THIS_MODULE,},
136};
137
138static struct phy_driver lxt971_driver = {
139 .phy_id = 0x001378e0,
140 .name = "LXT971",
141 .phy_id_mask = 0xfffffff0,
142 .features = PHY_BASIC_FEATURES,
143 .flags = PHY_HAS_INTERRUPT,
144 .config_aneg = genphy_config_aneg,
145 .read_status = genphy_read_status,
146 .ack_interrupt = lxt971_ack_interrupt,
147 .config_intr = lxt971_config_intr,
148 .driver = { .owner = THIS_MODULE,},
149};
150
151static int __init lxt_init(void)
152{
153 int ret;
154
155 ret = phy_driver_register(&lxt970_driver);
156 if (ret)
157 goto err1;
158
159 ret = phy_driver_register(&lxt971_driver);
160 if (ret)
161 goto err2;
162 return 0;
163
164 err2:
165 phy_driver_unregister(&lxt970_driver);
166 err1:
167 return ret;
168}
169
170static void __exit lxt_exit(void)
171{
172 phy_driver_unregister(&lxt970_driver);
173 phy_driver_unregister(&lxt971_driver);
174}
175
176module_init(lxt_init);
177module_exit(lxt_exit);