projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| dbb7a95d C |
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> | |
| 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> | |
| 28 | #include <linux/mm.h> | |
| 29 | #include <linux/module.h> | |
| 30 | #include <linux/mii.h> | |
| 31 | #include <linux/ethtool.h> | |
| 32 | #include <linux/phy.h> | |
| 33 | #include <linux/io.h> | |
| 34 | #include <linux/uaccess.h> | |
| 35 | #include <asm/irq.h> | |
| 36 | ||
| 37 | #define ET1011C_STATUS_REG (0x1A) | |
| 38 | #define ET1011C_CONFIG_REG (0x16) | |
| 39 | #define ET1011C_SPEED_MASK (0x0300) | |
| 40 | #define ET1011C_GIGABIT_SPEED (0x0200) | |
| 41 | #define ET1011C_TX_FIFO_MASK (0x3000) | |
| 42 | #define ET1011C_TX_FIFO_DEPTH_8 (0x0000) | |
| 43 | #define ET1011C_TX_FIFO_DEPTH_16 (0x1000) | |
| 44 | #define ET1011C_INTERFACE_MASK (0x0007) | |
| 45 | #define ET1011C_GMII_INTERFACE (0x0002) | |
| 46 | #define ET1011C_SYS_CLK_EN (0x01 << 4) | |
| 47 | ||
| 48 | ||
| 49 | MODULE_DESCRIPTION("LSI ET1011C PHY driver"); | |
| 50 | MODULE_AUTHOR("Chaithrika U S"); | |
| 51 | MODULE_LICENSE("GPL"); | |
| 52 | ||
| 53 | static int et1011c_config_aneg(struct phy_device *phydev) | |
| 54 | { | |
| 55 | int ctl = 0; | |
| 56 | ctl = phy_read(phydev, MII_BMCR); | |
| 57 | if (ctl < 0) | |
| 58 | return ctl; | |
| 59 | ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 | | |
| 60 | BMCR_ANENABLE); | |
| 61 | /* First clear the PHY */ | |
| 62 | phy_write(phydev, MII_BMCR, ctl | BMCR_RESET); | |
| 63 | ||
| 64 | return genphy_config_aneg(phydev); | |
| 65 | } | |
| 66 | ||
| 67 | static int et1011c_read_status(struct phy_device *phydev) | |
| 68 | { | |
| 69 | int ret; | |
| 70 | u32 val; | |
| 71 | static int speed; | |
| 72 | ret = genphy_read_status(phydev); | |
| 73 | ||
| 74 | if (speed != phydev->speed) { | |
| 75 | speed = phydev->speed; | |
| 76 | val = phy_read(phydev, ET1011C_STATUS_REG); | |
| 77 | if ((val & ET1011C_SPEED_MASK) == | |
| 78 | ET1011C_GIGABIT_SPEED) { | |
| 79 | val = phy_read(phydev, ET1011C_CONFIG_REG); | |
| 80 | val &= ~ET1011C_TX_FIFO_MASK; | |
| 81 | phy_write(phydev, ET1011C_CONFIG_REG, val\ | |
| 82 | | ET1011C_GMII_INTERFACE\ | |
| 83 | | ET1011C_SYS_CLK_EN\ | |
| 84 | | ET1011C_TX_FIFO_DEPTH_16); | |
| 85 | ||
| 86 | } | |
| 87 | } | |
| 88 | return ret; | |
| 89 | } | |
| 90 | ||
| 91 | static struct phy_driver et1011c_driver = { | |
| 92 | .phy_id = 0x0282f014, | |
| 93 | .name = "ET1011C", | |
| 94 | .phy_id_mask = 0xfffffff0, | |
| 95 | .features = (PHY_BASIC_FEATURES | SUPPORTED_1000baseT_Full), | |
| 96 | .flags = PHY_POLL, | |
| 97 | .config_aneg = et1011c_config_aneg, | |
| 98 | .read_status = et1011c_read_status, | |
| 99 | .driver = { .owner = THIS_MODULE,}, | |
| 100 | }; | |
| 101 | ||
| 102 | static int __init et1011c_init(void) | |
| 103 | { | |
| 104 | return phy_driver_register(&et1011c_driver); | |
| 105 | } | |
| 106 | ||
| 107 | static void __exit et1011c_exit(void) | |
| 108 | { | |
| 109 | phy_driver_unregister(&et1011c_driver); | |
| 110 | } | |
| 111 | ||
| 112 | module_init(et1011c_init); | |
| 113 | module_exit(et1011c_exit); |