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 MODULE_DESCRIPTION("Realtek PHY driver"); 27 MODULE_AUTHOR("Johnson Leung"); 28 MODULE_LICENSE("GPL"); 29 30 static int rtl821x_ack_interrupt(struct phy_device *phydev) 31 { 32 int err; 33 34 err = phy_read(phydev, RTL821x_INSR); 35 36 return (err < 0) ? err : 0; 37 } 38 39 static int rtl821x_config_intr(struct phy_device *phydev) 40 { 41 int err; 42 43 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) 44 err = phy_write(phydev, RTL821x_INER, 45 RTL821x_INER_INIT); 46 else 47 err = phy_write(phydev, RTL821x_INER, 0); 48 49 return err; 50 } 51 52 /* RTL8211B */ 53 static struct phy_driver rtl821x_driver = { 54 .phy_id = 0x001cc912, 55 .name = "RTL821x Gigabit Ethernet", 56 .phy_id_mask = 0x001fffff, 57 .features = PHY_GBIT_FEATURES, 58 .flags = PHY_HAS_INTERRUPT, 59 .config_aneg = &genphy_config_aneg, 60 .read_status = &genphy_read_status, 61 .ack_interrupt = &rtl821x_ack_interrupt, 62 .config_intr = &rtl821x_config_intr, 63 .driver = { .owner = THIS_MODULE,}, 64 }; 65 66 static int __init realtek_init(void) 67 { 68 int ret; 69 70 ret = phy_driver_register(&rtl821x_driver); 71 72 return ret; 73 } 74 75 static void __exit realtek_exit(void) 76 { 77 phy_driver_unregister(&rtl821x_driver); 78 } 79 80 module_init(realtek_init); 81 module_exit(realtek_exit); 82 83 static struct mdio_device_id __maybe_unused realtek_tbl[] = { 84 { 0x001cc912, 0x001fffff }, 85 { } 86 }; 87 88 MODULE_DEVICE_TABLE(mdio, realtek_tbl); 89