2 * drivers/net/phy/davicom.c
4 * Driver for Davicom PHYs
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
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.
16 #include <linux/kernel.h>
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>
29 #include <linux/module.h>
30 #include <linux/mii.h>
31 #include <linux/ethtool.h>
32 #include <linux/phy.h>
36 #include <asm/uaccess.h>
38 #define MII_DM9161_SCR 0x10
39 #define MII_DM9161_SCR_INIT 0x0610
41 /* DM9161 Interrupt Register */
42 #define MII_DM9161_INTR 0x15
43 #define MII_DM9161_INTR_PEND 0x8000
44 #define MII_DM9161_INTR_DPLX_MASK 0x0800
45 #define MII_DM9161_INTR_SPD_MASK 0x0400
46 #define MII_DM9161_INTR_LINK_MASK 0x0200
47 #define MII_DM9161_INTR_MASK 0x0100
48 #define MII_DM9161_INTR_DPLX_CHANGE 0x0010
49 #define MII_DM9161_INTR_SPD_CHANGE 0x0008
50 #define MII_DM9161_INTR_LINK_CHANGE 0x0004
51 #define MII_DM9161_INTR_INIT 0x0000
52 #define MII_DM9161_INTR_STOP \
53 (MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \
54 | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK)
56 /* DM9161 10BT Configuration/Status */
57 #define MII_DM9161_10BTCSR 0x12
58 #define MII_DM9161_10BTCSR_INIT 0x7800
60 MODULE_DESCRIPTION("Davicom PHY driver");
61 MODULE_AUTHOR("Andy Fleming");
62 MODULE_LICENSE("GPL");
65 #define DM9161_DELAY 1
66 static int dm9161_config_intr(struct phy_device *phydev)
70 temp = phy_read(phydev, MII_DM9161_INTR);
75 if(PHY_INTERRUPT_ENABLED == phydev->interrupts )
76 temp &= ~(MII_DM9161_INTR_STOP);
78 temp |= MII_DM9161_INTR_STOP;
80 temp = phy_write(phydev, MII_DM9161_INTR, temp);
85 static int dm9161_config_aneg(struct phy_device *phydev)
90 err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
95 /* Configure the new settings */
96 err = genphy_config_aneg(phydev);
104 static int dm9161_config_init(struct phy_device *phydev)
108 /* Isolate the PHY */
109 err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
114 /* Do not bypass the scrambler/descrambler */
115 err = phy_write(phydev, MII_DM9161_SCR, MII_DM9161_SCR_INIT);
120 /* Clear 10BTCSR to default */
121 err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT);
126 /* Reconnect the PHY, and enable Autonegotiation */
127 err = phy_write(phydev, MII_BMCR, BMCR_ANENABLE);
135 static int dm9161_ack_interrupt(struct phy_device *phydev)
137 int err = phy_read(phydev, MII_DM9161_INTR);
139 return (err < 0) ? err : 0;
142 static struct phy_driver dm9161e_driver = {
143 .phy_id = 0x0181b880,
144 .name = "Davicom DM9161E",
145 .phy_id_mask = 0x0ffffff0,
146 .features = PHY_BASIC_FEATURES,
147 .config_init = dm9161_config_init,
148 .config_aneg = dm9161_config_aneg,
149 .read_status = genphy_read_status,
150 .driver = { .owner = THIS_MODULE,},
153 static struct phy_driver dm9161a_driver = {
154 .phy_id = 0x0181b8a0,
155 .name = "Davicom DM9161A",
156 .phy_id_mask = 0x0ffffff0,
157 .features = PHY_BASIC_FEATURES,
158 .config_init = dm9161_config_init,
159 .config_aneg = dm9161_config_aneg,
160 .read_status = genphy_read_status,
161 .driver = { .owner = THIS_MODULE,},
164 static struct phy_driver dm9131_driver = {
165 .phy_id = 0x00181b80,
166 .name = "Davicom DM9131",
167 .phy_id_mask = 0x0ffffff0,
168 .features = PHY_BASIC_FEATURES,
169 .flags = PHY_HAS_INTERRUPT,
170 .config_aneg = genphy_config_aneg,
171 .read_status = genphy_read_status,
172 .ack_interrupt = dm9161_ack_interrupt,
173 .config_intr = dm9161_config_intr,
174 .driver = { .owner = THIS_MODULE,},
177 static int __init davicom_init(void)
181 ret = phy_driver_register(&dm9161e_driver);
185 ret = phy_driver_register(&dm9161a_driver);
189 ret = phy_driver_register(&dm9131_driver);
195 phy_driver_unregister(&dm9161a_driver);
197 phy_driver_unregister(&dm9161e_driver);
202 static void __exit davicom_exit(void)
204 phy_driver_unregister(&dm9161e_driver);
205 phy_driver_unregister(&dm9161a_driver);
206 phy_driver_unregister(&dm9131_driver);
209 module_init(davicom_init);
210 module_exit(davicom_exit);