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 18 #define RTL821x_PHYSR 0x11 19 #define RTL821x_PHYSR_DUPLEX 0x2000 20 #define RTL821x_PHYSR_SPEED 0xc000 21 #define RTL821x_INER 0x12 22 #define RTL821x_INER_INIT 0x6400 23 #define RTL821x_INSR 0x13 24 25 MODULE_DESCRIPTION("Realtek PHY driver"); 26 MODULE_AUTHOR("Johnson Leung"); 27 MODULE_LICENSE("GPL"); 28 29 static int rtl821x_ack_interrupt(struct phy_device *phydev) 30 { 31 int err; 32 33 err = phy_read(phydev, RTL821x_INSR); 34 35 return (err < 0) ? err : 0; 36 } 37 38 static int rtl821x_config_intr(struct phy_device *phydev) 39 { 40 int err; 41 42 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) 43 err = phy_write(phydev, RTL821x_INER, 44 RTL821x_INER_INIT); 45 else 46 err = phy_write(phydev, RTL821x_INER, 0); 47 48 return err; 49 } 50 51 /* RTL8211B */ 52 static struct phy_driver rtl821x_driver = { 53 .phy_id = 0x001cc912, 54 .name = "RTL821x Gigabit Ethernet", 55 .phy_id_mask = 0x001fffff, 56 .features = PHY_GBIT_FEATURES, 57 .flags = PHY_HAS_INTERRUPT, 58 .config_aneg = &genphy_config_aneg, 59 .read_status = &genphy_read_status, 60 .ack_interrupt = &rtl821x_ack_interrupt, 61 .config_intr = &rtl821x_config_intr, 62 .driver = { .owner = THIS_MODULE,}, 63 }; 64 65 static int __init realtek_init(void) 66 { 67 int ret; 68 69 ret = phy_driver_register(&rtl821x_driver); 70 71 return ret; 72 } 73 74 static void __exit realtek_exit(void) 75 { 76 phy_driver_unregister(&rtl821x_driver); 77 } 78 79 module_init(realtek_init); 80 module_exit(realtek_exit); 81 82 static struct mdio_device_id realtek_tbl[] = { 83 { 0x001cc912, 0x001fffff }, 84 { } 85 }; 86 87 MODULE_DEVICE_TABLE(mdio, realtek_tbl); 88