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