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/kernel.h> 17 #include <linux/string.h> 18 #include <linux/errno.h> 19 #include <linux/unistd.h> 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 33 #include <asm/io.h> 34 #include <asm/irq.h> 35 #include <asm/uaccess.h> 36 37 /* The Level one LXT970 is used by many boards */ 38 39 #define MII_LXT970_IER 17 /* Interrupt Enable Register */ 40 41 #define MII_LXT970_IER_IEN 0x0002 42 43 #define MII_LXT970_ISR 18 /* Interrupt Status Register */ 44 45 #define MII_LXT970_CONFIG 19 /* Configuration Register */ 46 47 /* ------------------------------------------------------------------------- */ 48 /* The Level one LXT971 is used on some of my custom boards */ 49 50 /* register definitions for the 971 */ 51 #define MII_LXT971_IER 18 /* Interrupt Enable Register */ 52 #define MII_LXT971_IER_IEN 0x00f2 53 54 #define MII_LXT971_ISR 19 /* Interrupt Status Register */ 55 56 57 MODULE_DESCRIPTION("Intel LXT PHY driver"); 58 MODULE_AUTHOR("Andy Fleming"); 59 MODULE_LICENSE("GPL"); 60 61 static int lxt970_ack_interrupt(struct phy_device *phydev) 62 { 63 int err; 64 65 err = phy_read(phydev, MII_BMSR); 66 67 if (err < 0) 68 return err; 69 70 err = phy_read(phydev, MII_LXT970_ISR); 71 72 if (err < 0) 73 return err; 74 75 return 0; 76 } 77 78 static int lxt970_config_intr(struct phy_device *phydev) 79 { 80 int err; 81 82 if(phydev->interrupts == PHY_INTERRUPT_ENABLED) 83 err = phy_write(phydev, MII_LXT970_IER, MII_LXT970_IER_IEN); 84 else 85 err = phy_write(phydev, MII_LXT970_IER, 0); 86 87 return err; 88 } 89 90 static int lxt970_config_init(struct phy_device *phydev) 91 { 92 int err; 93 94 err = phy_write(phydev, MII_LXT970_CONFIG, 0); 95 96 return err; 97 } 98 99 100 static int lxt971_ack_interrupt(struct phy_device *phydev) 101 { 102 int err = phy_read(phydev, MII_LXT971_ISR); 103 104 if (err < 0) 105 return err; 106 107 return 0; 108 } 109 110 static int lxt971_config_intr(struct phy_device *phydev) 111 { 112 int err; 113 114 if(phydev->interrupts == PHY_INTERRUPT_ENABLED) 115 err = phy_write(phydev, MII_LXT971_IER, MII_LXT971_IER_IEN); 116 else 117 err = phy_write(phydev, MII_LXT971_IER, 0); 118 119 return err; 120 } 121 122 static struct phy_driver lxt970_driver = { 123 .phy_id = 0x78100000, 124 .name = "LXT970", 125 .phy_id_mask = 0xfffffff0, 126 .features = PHY_BASIC_FEATURES, 127 .flags = PHY_HAS_INTERRUPT, 128 .config_init = lxt970_config_init, 129 .config_aneg = genphy_config_aneg, 130 .read_status = genphy_read_status, 131 .ack_interrupt = lxt970_ack_interrupt, 132 .config_intr = lxt970_config_intr, 133 .driver = { .owner = THIS_MODULE,}, 134 }; 135 136 static struct phy_driver lxt971_driver = { 137 .phy_id = 0x001378e0, 138 .name = "LXT971", 139 .phy_id_mask = 0xfffffff0, 140 .features = PHY_BASIC_FEATURES, 141 .flags = PHY_HAS_INTERRUPT, 142 .config_aneg = genphy_config_aneg, 143 .read_status = genphy_read_status, 144 .ack_interrupt = lxt971_ack_interrupt, 145 .config_intr = lxt971_config_intr, 146 .driver = { .owner = THIS_MODULE,}, 147 }; 148 149 static int __init lxt_init(void) 150 { 151 int ret; 152 153 ret = phy_driver_register(&lxt970_driver); 154 if (ret) 155 goto err1; 156 157 ret = phy_driver_register(&lxt971_driver); 158 if (ret) 159 goto err2; 160 return 0; 161 162 err2: 163 phy_driver_unregister(&lxt970_driver); 164 err1: 165 return ret; 166 } 167 168 static void __exit lxt_exit(void) 169 { 170 phy_driver_unregister(&lxt970_driver); 171 phy_driver_unregister(&lxt971_driver); 172 } 173 174 module_init(lxt_init); 175 module_exit(lxt_exit); 176