1 /* 2 * drivers/net/phy/realtek.c 3 * 4 * Driver for Realtek PHYs 5 * 6 * Author: Johnson Leung <r58129@freescale.com> 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/phy.h> 17 #include <linux/module.h> 18 19 #define RTL821x_PHYSR 0x11 20 #define RTL821x_PHYSR_DUPLEX 0x2000 21 #define RTL821x_PHYSR_SPEED 0xc000 22 #define RTL821x_INER 0x12 23 #define RTL821x_INER_INIT 0x6400 24 #define RTL821x_INSR 0x13 25 26 #define RTL8211E_INER_LINK_STAT 0x10 27 28 MODULE_DESCRIPTION("Realtek PHY driver"); 29 MODULE_AUTHOR("Johnson Leung"); 30 MODULE_LICENSE("GPL"); 31 32 static int rtl821x_ack_interrupt(struct phy_device *phydev) 33 { 34 int err; 35 36 err = phy_read(phydev, RTL821x_INSR); 37 38 return (err < 0) ? err : 0; 39 } 40 41 static int rtl8211b_config_intr(struct phy_device *phydev) 42 { 43 int err; 44 45 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) 46 err = phy_write(phydev, RTL821x_INER, 47 RTL821x_INER_INIT); 48 else 49 err = phy_write(phydev, RTL821x_INER, 0); 50 51 return err; 52 } 53 54 static int rtl8211e_config_intr(struct phy_device *phydev) 55 { 56 int err; 57 58 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) 59 err = phy_write(phydev, RTL821x_INER, 60 RTL8211E_INER_LINK_STAT); 61 else 62 err = phy_write(phydev, RTL821x_INER, 0); 63 64 return err; 65 } 66 67 /* RTL8211B */ 68 static struct phy_driver rtl8211b_driver = { 69 .phy_id = 0x001cc912, 70 .name = "RTL8211B Gigabit Ethernet", 71 .phy_id_mask = 0x001fffff, 72 .features = PHY_GBIT_FEATURES, 73 .flags = PHY_HAS_INTERRUPT, 74 .config_aneg = &genphy_config_aneg, 75 .read_status = &genphy_read_status, 76 .ack_interrupt = &rtl821x_ack_interrupt, 77 .config_intr = &rtl8211b_config_intr, 78 .driver = { .owner = THIS_MODULE,}, 79 }; 80 81 /* RTL8211E */ 82 static struct phy_driver rtl8211e_driver = { 83 .phy_id = 0x001cc915, 84 .name = "RTL8211E Gigabit Ethernet", 85 .phy_id_mask = 0x001fffff, 86 .features = PHY_GBIT_FEATURES, 87 .flags = PHY_HAS_INTERRUPT, 88 .config_aneg = &genphy_config_aneg, 89 .read_status = &genphy_read_status, 90 .ack_interrupt = &rtl821x_ack_interrupt, 91 .config_intr = &rtl8211e_config_intr, 92 .suspend = genphy_suspend, 93 .resume = genphy_resume, 94 .driver = { .owner = THIS_MODULE,}, 95 }; 96 97 static int __init realtek_init(void) 98 { 99 int ret; 100 101 ret = phy_driver_register(&rtl8211b_driver); 102 if (ret < 0) 103 return -ENODEV; 104 return phy_driver_register(&rtl8211e_driver); 105 } 106 107 static void __exit realtek_exit(void) 108 { 109 phy_driver_unregister(&rtl8211b_driver); 110 phy_driver_unregister(&rtl8211e_driver); 111 } 112 113 module_init(realtek_init); 114 module_exit(realtek_exit); 115 116 static struct mdio_device_id __maybe_unused realtek_tbl[] = { 117 { 0x001cc912, 0x001fffff }, 118 { 0x001cc915, 0x001fffff }, 119 { } 120 }; 121 122 MODULE_DEVICE_TABLE(mdio, realtek_tbl); 123