LXR linux/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#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
  26MODULE_DESCRIPTION("Realtek PHY driver");
  27MODULE_AUTHOR("Johnson Leung");
  28MODULE_LICENSE("GPL");
  29
  30static 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
  39static 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 */
  53static 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
  66static int __init realtek_init(void)
  67{
  68        int ret;
  69
  70        ret = phy_driver_register(&rtl821x_driver);
  71
  72        return ret;
  73}
  74
  75static void __exit realtek_exit(void)
  76{
  77        phy_driver_unregister(&rtl821x_driver);
  78}
  79
  80module_init(realtek_init);
  81module_exit(realtek_exit);
  82
  83static struct mdio_device_id __maybe_unused realtek_tbl[] = {
  84        { 0x001cc912, 0x001fffff },
  85        { }
  86};
  87
  88MODULE_DEVICE_TABLE(mdio, realtek_tbl);
  89