realtek.c

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/*
 * drivers/net/phy/realtek.c
 *
 * Driver for Realtek PHYs
 *
 * Author: Johnson Leung <[email protected]>
 *
 * Copyright (c) 2004 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 */
#include <linux/phy.h>
#include <linux/module.h>

#define RTL821x_PHYSR       0x11
#define RTL821x_PHYSR_DUPLEX    0x2000
#define RTL821x_PHYSR_SPEED 0xc000
#define RTL821x_INER        0x12
#define RTL821x_INER_INIT   0x6400
#define RTL821x_INSR        0x13

MODULE_DESCRIPTION("Realtek PHY driver");
MODULE_AUTHOR("Johnson Leung");
MODULE_LICENSE("GPL");

static int rtl821x_ack_interrupt(struct phy_device *phydev)
{
    int err;

    err = phy_read(phydev, RTL821x_INSR);

    return (err < 0) ? err : 0;
}

static int rtl821x_config_intr(struct phy_device *phydev)
{
    int err;

    if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
        err = phy_write(phydev, RTL821x_INER,
                RTL821x_INER_INIT);
    else
        err = phy_write(phydev, RTL821x_INER, 0);

    return err;
}

/* RTL8211B */
static struct phy_driver rtl821x_driver = {
    .phy_id     = 0x001cc912,
    .name       = "RTL821x Gigabit Ethernet",
    .phy_id_mask    = 0x001fffff,
    .features   = PHY_GBIT_FEATURES,
    .flags      = PHY_HAS_INTERRUPT,
    .config_aneg    = &genphy_config_aneg,
    .read_status    = &genphy_read_status,
    .ack_interrupt  = &rtl821x_ack_interrupt,
    .config_intr    = &rtl821x_config_intr,
    .driver     = { .owner = THIS_MODULE,},
};

static int __init realtek_init(void)
{
    return phy_driver_register(&rtl821x_driver);
}

static void __exit realtek_exit(void)
{
    phy_driver_unregister(&rtl821x_driver);
}

module_init(realtek_init);
module_exit(realtek_exit);

static struct mdio_device_id __maybe_unused realtek_tbl[] = {
    { 0x001cc912, 0x001fffff },
    { }
};

MODULE_DEVICE_TABLE(mdio, realtek_tbl);