drivers/net/phy/realtek.c

   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 __maybe_unused realtek_tbl[] = {
  83         { 0x001cc912, 0x001fffff },
  84         { }
  85 };
  86
  87 MODULE_DEVICE_TABLE(mdio, realtek_tbl);