Chaithrika U S | dbb7a95 | 2008-12-09 22:21:25 -0800 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/phy/et1011c.c |
| 3 | * |
| 4 | * Driver for LSI ET1011C PHYs |
| 5 | * |
| 6 | * Author: Chaithrika U S |
| 7 | * |
| 8 | * Copyright (c) 2008 Texas Instruments |
| 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/string.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/unistd.h> |
Chaithrika U S | dbb7a95 | 2008-12-09 22:21:25 -0800 | [diff] [blame] | 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> |
| 27 | #include <linux/mm.h> |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/mii.h> |
| 30 | #include <linux/ethtool.h> |
| 31 | #include <linux/phy.h> |
| 32 | #include <linux/io.h> |
| 33 | #include <linux/uaccess.h> |
| 34 | #include <asm/irq.h> |
| 35 | |
| 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) |
| 46 | |
| 47 | |
| 48 | MODULE_DESCRIPTION("LSI ET1011C PHY driver"); |
| 49 | MODULE_AUTHOR("Chaithrika U S"); |
| 50 | MODULE_LICENSE("GPL"); |
| 51 | |
| 52 | static int et1011c_config_aneg(struct phy_device *phydev) |
| 53 | { |
| 54 | int ctl = 0; |
| 55 | ctl = phy_read(phydev, MII_BMCR); |
| 56 | if (ctl < 0) |
| 57 | return ctl; |
| 58 | ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 | |
| 59 | BMCR_ANENABLE); |
| 60 | /* First clear the PHY */ |
| 61 | phy_write(phydev, MII_BMCR, ctl | BMCR_RESET); |
| 62 | |
| 63 | return genphy_config_aneg(phydev); |
| 64 | } |
| 65 | |
| 66 | static int et1011c_read_status(struct phy_device *phydev) |
| 67 | { |
| 68 | int ret; |
| 69 | u32 val; |
| 70 | static int speed; |
| 71 | ret = genphy_read_status(phydev); |
| 72 | |
| 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\ |
| 82 | | ET1011C_SYS_CLK_EN\ |
| 83 | | ET1011C_TX_FIFO_DEPTH_16); |
| 84 | |
| 85 | } |
| 86 | } |
| 87 | return ret; |
| 88 | } |
| 89 | |
| 90 | static struct phy_driver et1011c_driver = { |
| 91 | .phy_id = 0x0282f014, |
| 92 | .name = "ET1011C", |
| 93 | .phy_id_mask = 0xfffffff0, |
| 94 | .features = (PHY_BASIC_FEATURES | SUPPORTED_1000baseT_Full), |
| 95 | .flags = PHY_POLL, |
| 96 | .config_aneg = et1011c_config_aneg, |
| 97 | .read_status = et1011c_read_status, |
| 98 | .driver = { .owner = THIS_MODULE,}, |
| 99 | }; |
| 100 | |
| 101 | static int __init et1011c_init(void) |
| 102 | { |
| 103 | return phy_driver_register(&et1011c_driver); |
| 104 | } |
| 105 | |
| 106 | static void __exit et1011c_exit(void) |
| 107 | { |
| 108 | phy_driver_unregister(&et1011c_driver); |
| 109 | } |
| 110 | |
| 111 | module_init(et1011c_init); |
| 112 | module_exit(et1011c_exit); |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 113 | |
Uwe Kleine-König | cf93c94 | 2010-10-03 23:43:32 +0000 | [diff] [blame] | 114 | static struct mdio_device_id __maybe_unused et1011c_tbl[] = { |
David Woodhouse | 4e4f10f | 2010-04-02 01:05:56 +0000 | [diff] [blame] | 115 | { 0x0282f014, 0xfffffff0 }, |
| 116 | { } |
| 117 | }; |
| 118 | |
| 119 | MODULE_DEVICE_TABLE(mdio, et1011c_tbl); |