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/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 34#include <asm/io.h> 35#include <asm/irq.h> 36#include <asm/uaccess.h> 37 38#define MII_DM9161_SCR 0x10 39#define MII_DM9161_SCR_INIT 0x0610 40 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) 55 56/* DM9161 10BT Configuration/Status */ 57#define MII_DM9161_10BTCSR 0x12 58#define MII_DM9161_10BTCSR_INIT 0x7800 59 60MODULE_DESCRIPTION("Davicom PHY driver"); 61MODULE_AUTHOR("Andy Fleming"); 62MODULE_LICENSE("GPL"); 63 64 65#define DM9161_DELAY 1 66static int dm9161_config_intr(struct phy_device *phydev) 67{ 68 int temp; 69 70 temp = phy_read(phydev, MII_DM9161_INTR); 71 72 if (temp < 0) 73 return temp; 74 75 if(PHY_INTERRUPT_ENABLED == phydev->interrupts ) 76 temp &= ~(MII_DM9161_INTR_STOP); 77 else 78 temp |= MII_DM9161_INTR_STOP; 79 80 temp = phy_write(phydev, MII_DM9161_INTR, temp); 81 82 return temp; 83} 84 85static int dm9161_config_aneg(struct phy_device *phydev) 86{ 87 int err; 88 89 /* Isolate the PHY */ 90 err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE); 91 92 if (err < 0) 93 return err; 94 95 /* Configure the new settings */ 96 err = genphy_config_aneg(phydev); 97 98 if (err < 0) 99 return err; 100 101 return 0; 102} 103 104static int dm9161_config_init(struct phy_device *phydev) 105{ 106 int err; 107 108 /* Isolate the PHY */ 109 err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE); 110 111 if (err < 0) 112 return err; 113 114 /* Do not bypass the scrambler/descrambler */ 115 err = phy_write(phydev, MII_DM9161_SCR, MII_DM9161_SCR_INIT); 116 117 if (err < 0) 118 return err; 119 120 /* Clear 10BTCSR to default */ 121 err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT); 122 123 if (err < 0) 124 return err; 125 126 /* Reconnect the PHY, and enable Autonegotiation */ 127 err = phy_write(phydev, MII_BMCR, BMCR_ANENABLE); 128 129 if (err < 0) 130 return err; 131 132 return 0; 133} 134 135static int dm9161_ack_interrupt(struct phy_device *phydev) 136{ 137 int err = phy_read(phydev, MII_DM9161_INTR); 138 139 return (err < 0) ? err : 0; 140} 141 142static 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,}, 151}; 152 153static 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,}, 162}; 163 164static 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,}, 175}; 176 177static int __init davicom_init(void) 178{ 179 int ret; 180 181 ret = phy_driver_register(&dm9161e_driver); 182 if (ret) 183 goto err1; 184 185 ret = phy_driver_register(&dm9161a_driver); 186 if (ret) 187 goto err2; 188 189 ret = phy_driver_register(&dm9131_driver); 190 if (ret) 191 goto err3; 192 return 0; 193 194 err3: 195 phy_driver_unregister(&dm9161a_driver); 196 err2: 197 phy_driver_unregister(&dm9161e_driver); 198 err1: 199 return ret; 200} 201 202static void __exit davicom_exit(void) 203{ 204 phy_driver_unregister(&dm9161e_driver); 205 phy_driver_unregister(&dm9161a_driver); 206 phy_driver_unregister(&dm9131_driver); 207} 208 209module_init(davicom_init); 210module_exit(davicom_exit); 211