2 * drivers/net/phy/et1011c.c
4 * Driver for LSI ET1011C PHYs
6 * Author: Chaithrika U S
8 * Copyright (c) 2008 Texas Instruments
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/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>
28 #include <linux/module.h>
29 #include <linux/mii.h>
30 #include <linux/ethtool.h>
31 #include <linux/phy.h>
33 #include <linux/uaccess.h>
36 #define ET1011C_STATUS_REG (0x1A)
37 #define ET1011C_CONFIG_REG (0x16)
38 #define ET1011C_SPEED_MASK (0x0300)
39 #define ET1011C_GIGABIT_SPEED (0x0200)
40 #define ET1011C_TX_FIFO_MASK (0x3000)
41 #define ET1011C_TX_FIFO_DEPTH_8 (0x0000)
42 #define ET1011C_TX_FIFO_DEPTH_16 (0x1000)
43 #define ET1011C_INTERFACE_MASK (0x0007)
44 #define ET1011C_GMII_INTERFACE (0x0002)
45 #define ET1011C_SYS_CLK_EN (0x01 << 4)
48 MODULE_DESCRIPTION("LSI ET1011C PHY driver");
49 MODULE_AUTHOR("Chaithrika U S");
50 MODULE_LICENSE("GPL");
52 static int et1011c_config_aneg(struct phy_device *phydev)
55 ctl = phy_read(phydev, MII_BMCR);
58 ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 |
60 /* First clear the PHY */
61 phy_write(phydev, MII_BMCR, ctl | BMCR_RESET);
63 return genphy_config_aneg(phydev);
66 static int et1011c_read_status(struct phy_device *phydev)
71 ret = genphy_read_status(phydev);
73 if (speed != phydev->speed) {
74 speed = phydev->speed;
75 val = phy_read(phydev, ET1011C_STATUS_REG);
76 if ((val & ET1011C_SPEED_MASK) ==
77 ET1011C_GIGABIT_SPEED) {
78 val = phy_read(phydev, ET1011C_CONFIG_REG);
79 val &= ~ET1011C_TX_FIFO_MASK;
80 phy_write(phydev, ET1011C_CONFIG_REG, val\
81 | ET1011C_GMII_INTERFACE\
83 | ET1011C_TX_FIFO_DEPTH_16);
90 static struct phy_driver et1011c_driver = {
93 .phy_id_mask = 0xfffffff0,
94 .features = (PHY_BASIC_FEATURES | SUPPORTED_1000baseT_Full),
96 .config_aneg = et1011c_config_aneg,
97 .read_status = et1011c_read_status,
98 .driver = { .owner = THIS_MODULE,},
101 static int __init et1011c_init(void)
103 return phy_driver_register(&et1011c_driver);
106 static void __exit et1011c_exit(void)
108 phy_driver_unregister(&et1011c_driver);
111 module_init(et1011c_init);
112 module_exit(et1011c_exit);
114 static struct mdio_device_id __maybe_unused et1011c_tbl[] = {
115 { 0x0282f014, 0xfffffff0 },
119 MODULE_DEVICE_TABLE(mdio, et1011c_tbl);