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/davicom.c
3 *
4 * Driver for Davicom 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/version.h>
33#include <linux/mii.h>
34#include <linux/ethtool.h>
35#include <linux/phy.h>
36
37#include <asm/io.h>
38#include <asm/irq.h>
39#include <asm/uaccess.h>
40
41#define MII_DM9161_SCR 0x10
42#define MII_DM9161_SCR_INIT 0x0610
43
44/* DM9161 Interrupt Register */
45#define MII_DM9161_INTR 0x15
46#define MII_DM9161_INTR_PEND 0x8000
47#define MII_DM9161_INTR_DPLX_MASK 0x0800
48#define MII_DM9161_INTR_SPD_MASK 0x0400
49#define MII_DM9161_INTR_LINK_MASK 0x0200
50#define MII_DM9161_INTR_MASK 0x0100
51#define MII_DM9161_INTR_DPLX_CHANGE 0x0010
52#define MII_DM9161_INTR_SPD_CHANGE 0x0008
53#define MII_DM9161_INTR_LINK_CHANGE 0x0004
54#define MII_DM9161_INTR_INIT 0x0000
55#define MII_DM9161_INTR_STOP \
56(MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \
57 | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK)
58
59/* DM9161 10BT Configuration/Status */
60#define MII_DM9161_10BTCSR 0x12
61#define MII_DM9161_10BTCSR_INIT 0x7800
62
63MODULE_DESCRIPTION("Davicom PHY driver");
64MODULE_AUTHOR("Andy Fleming");
65MODULE_LICENSE("GPL");
66
67
68#define DM9161_DELAY 1
69static int dm9161_config_intr(struct phy_device *phydev)
70{
71 int temp;
72
73 temp = phy_read(phydev, MII_DM9161_INTR);
74
75 if (temp < 0)
76 return temp;
77
78 if(PHY_INTERRUPT_ENABLED == phydev->interrupts )
79 temp &= ~(MII_DM9161_INTR_STOP);
80 else
81 temp |= MII_DM9161_INTR_STOP;
82
83 temp = phy_write(phydev, MII_DM9161_INTR, temp);
84
85 return temp;
86}
87
88static int dm9161_config_aneg(struct phy_device *phydev)
89{
90 int err;
91
92 /* Isolate the PHY */
93 err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
94
95 if (err < 0)
96 return err;
97
98 /* Configure the new settings */
99 err = genphy_config_aneg(phydev);
100
101 if (err < 0)
102 return err;
103
104 return 0;
105}
106
107static int dm9161_config_init(struct phy_device *phydev)
108{
109 int err;
110
111 /* Isolate the PHY */
112 err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
113
114 if (err < 0)
115 return err;
116
117 /* Do not bypass the scrambler/descrambler */
118 err = phy_write(phydev, MII_DM9161_SCR, MII_DM9161_SCR_INIT);
119
120 if (err < 0)
121 return err;
122
123 /* Clear 10BTCSR to default */
124 err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT);
125
126 if (err < 0)
127 return err;
128
129 /* Reconnect the PHY, and enable Autonegotiation */
130 err = phy_write(phydev, MII_BMCR, BMCR_ANENABLE);
131
132 if (err < 0)
133 return err;
134
135 return 0;
136}
137
138static int dm9161_ack_interrupt(struct phy_device *phydev)
139{
140 int err = phy_read(phydev, MII_DM9161_INTR);
141
142 return (err < 0) ? err : 0;
143}
144
145static struct phy_driver dm9161_driver = {
146 .phy_id = 0x0181b880,
147 .name = "Davicom DM9161E",
148 .phy_id_mask = 0x0ffffff0,
149 .features = PHY_BASIC_FEATURES,
150 .config_init = dm9161_config_init,
151 .config_aneg = dm9161_config_aneg,
152 .read_status = genphy_read_status,
153 .driver = { .owner = THIS_MODULE,},
154};
155
156static struct phy_driver dm9131_driver = {
157 .phy_id = 0x00181b80,
158 .name = "Davicom DM9131",
159 .phy_id_mask = 0x0ffffff0,
160 .features = PHY_BASIC_FEATURES,
161 .flags = PHY_HAS_INTERRUPT,
162 .config_aneg = genphy_config_aneg,
163 .read_status = genphy_read_status,
164 .ack_interrupt = dm9161_ack_interrupt,
165 .config_intr = dm9161_config_intr,
166 .driver = { .owner = THIS_MODULE,},
167};
168
169static int __init davicom_init(void)
170{
171 int ret;
172
173 ret = phy_driver_register(&dm9161_driver);
174 if (ret)
175 goto err1;
176
177 ret = phy_driver_register(&dm9131_driver);
178 if (ret)
179 goto err2;
180 return 0;
181
182 err2:
183 phy_driver_unregister(&dm9161_driver);
184 err1:
185 return ret;
186}
187
188static void __exit davicom_exit(void)
189{
190 phy_driver_unregister(&dm9161_driver);
191 phy_driver_unregister(&dm9131_driver);
192}
193
194module_init(davicom_init);
195module_exit(davicom_exit);