1 /* 2 * drivers/net/phy/lxt.c 3 * 4 * Driver for Intel LXT 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/config.h> 17 #include <linux/kernel.h> 18 #include <linux/sched.h> 19 #include <linux/string.h> 20 #include <linux/errno.h> 21 #include <linux/unistd.h> 22 #include <linux/slab.h> 23 #include <linux/interrupt.h> 24 #include <linux/init.h> 25 #include <linux/delay.h> 26 #include <linux/netdevice.h> 27 #include <linux/etherdevice.h> 28 #include <linux/skbuff.h> 29 #include <linux/spinlock.h> 30 #include <linux/mm.h> 31 #include <linux/module.h> 32 #include <linux/version.h> 33 #include <linux/mii.h> 34 #include <linux/ethtool.h> 35 #include <linux/phy.h> 36 37 #include <asm/io.h> 38 #include <asm/irq.h> 39 #include <asm/uaccess.h> 40 41 /* The Level one LXT970 is used by many boards */ 42 43 #define MII_LXT970_IER 17 /* Interrupt Enable Register */ 44 45 #define MII_LXT970_IER_IEN 0x0002 46 47 #define MII_LXT970_ISR 18 /* Interrupt Status Register */ 48 49 #define MII_LXT970_CONFIG 19 /* Configuration Register */ 50 51 /* ------------------------------------------------------------------------- */ 52 /* The Level one LXT971 is used on some of my custom boards */ 53 54 /* register definitions for the 971 */ 55 #define MII_LXT971_IER 18 /* Interrupt Enable Register */ 56 #define MII_LXT971_IER_IEN 0x00f2 57 58 #define MII_LXT971_ISR 19 /* Interrupt Status Register */ 59 60 61 MODULE_DESCRIPTION("Intel LXT PHY driver"); 62 MODULE_AUTHOR("Andy Fleming"); 63 MODULE_LICENSE("GPL"); 64 65 static int lxt970_ack_interrupt(struct phy_device *phydev) 66 { 67 int err; 68 69 err = phy_read(phydev, MII_BMSR); 70 71 if (err < 0) 72 return err; 73 74 err = phy_read(phydev, MII_LXT970_ISR); 75 76 if (err < 0) 77 return err; 78 79 return 0; 80 } 81 82 static int lxt970_config_intr(struct phy_device *phydev) 83 { 84 int err; 85 86 if(phydev->interrupts == PHY_INTERRUPT_ENABLED) 87 err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN); 88 else 89 err = phy_write(phydev, MII_LXT970_IER, 0); 90 91 return err; 92 } 93 94 static int lxt970_config_init(struct phy_device *phydev) 95 { 96 int err; 97 98 err = phy_write(phydev, MII_LXT970_CONFIG, 0); 99 100 return err; 101 } 102 103 104 static int lxt971_ack_interrupt(struct phy_device *phydev) 105 { 106 int err = phy_read(phydev, MII_LXT971_ISR); 107 108 if (err < 0) 109 return err; 110 111 return 0; 112 } 113 114 static int lxt971_config_intr(struct phy_device *phydev) 115 { 116 int err; 117 118 if(phydev->interrupts == PHY_INTERRUPT_ENABLED) 119 err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN); 120 else 121 err = phy_write(phydev, MII_LXT971_IER, 0); 122 123 return err; 124 } 125 126 static struct phy_driver lxt970_driver = { 127 .phy_id = 0x07810000, 128 .name = "LXT970", 129 .phy_id_mask = 0x0fffffff, 130 .features = PHY_BASIC_FEATURES, 131 .flags = PHY_HAS_INTERRUPT, 132 .config_init = lxt970_config_init, 133 .config_aneg = genphy_config_aneg, 134 .read_status = genphy_read_status, 135 .ack_interrupt = lxt970_ack_interrupt, 136 .config_intr = lxt970_config_intr, 137 .driver = { .owner = THIS_MODULE,}, 138 }; 139 140 static struct phy_driver lxt971_driver = { 141 .phy_id = 0x0001378e, 142 .name = "LXT971", 143 .phy_id_mask = 0x0fffffff, 144 .features = PHY_BASIC_FEATURES, 145 .flags = PHY_HAS_INTERRUPT, 146 .config_aneg = genphy_config_aneg, 147 .read_status = genphy_read_status, 148 .ack_interrupt = lxt971_ack_interrupt, 149 .config_intr = lxt971_config_intr, 150 .driver = { .owner = THIS_MODULE,}, 151 }; 152 153 static int __init lxt_init(void) 154 { 155 int ret; 156 157 ret = phy_driver_register(&lxt970_driver); 158 if (ret) 159 goto err1; 160 161 ret = phy_driver_register(&lxt971_driver); 162 if (ret) 163 goto err2; 164 return 0; 165 166 err2: 167 phy_driver_unregister(&lxt970_driver); 168 err1: 169 return ret; 170 } 171 172 static void __exit lxt_exit(void) 173 { 174 phy_driver_unregister(&lxt970_driver); 175 phy_driver_unregister(&lxt971_driver); 176 } 177 178 module_init(lxt_init); 179 module_exit(lxt_exit); 180