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/*

 * drivers/net/phy/cicada.c

 *

 * Driver for Cicada PHYs

 *

 * Author: Andy Fleming

 *

 * 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/kernel.h>

#include <linux/string.h>

#include <linux/errno.h>

#include <linux/unistd.h>

#include <linux/slab.h>

#include <linux/interrupt.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/netdevice.h>

#include <linux/etherdevice.h>

#include <linux/skbuff.h>

#include <linux/spinlock.h>

#include <linux/mm.h>

#include <linux/module.h>

#include <linux/mii.h>

#include <linux/ethtool.h>

#include <linux/phy.h>

#include <asm/io.h>

#include <asm/irq.h>

#include <asm/uaccess.h>

/* Cicada Extended Control Register 1 */

#define MII_CIS8201_EXT_CON1           0x17

#define MII_CIS8201_EXTCON1_INIT       0x0000

/* Cicada Interrupt Mask Register */

#define MII_CIS8201_IMASK               0x19

#define MII_CIS8201_IMASK_IEN           0x8000

#define MII_CIS8201_IMASK_SPEED 0x4000

#define MII_CIS8201_IMASK_LINK          0x2000

#define MII_CIS8201_IMASK_DUPLEX        0x1000

#define MII_CIS8201_IMASK_MASK          0xf000

/* Cicada Interrupt Status Register */

#define MII_CIS8201_ISTAT               0x1a

#define MII_CIS8201_ISTAT_STATUS        0x8000

#define MII_CIS8201_ISTAT_SPEED 0x4000

#define MII_CIS8201_ISTAT_LINK          0x2000

#define MII_CIS8201_ISTAT_DUPLEX        0x1000

/* Cicada Auxiliary Control/Status Register */

#define MII_CIS8201_AUX_CONSTAT        0x1c

#define MII_CIS8201_AUXCONSTAT_INIT    0x0004

#define MII_CIS8201_AUXCONSTAT_DUPLEX  0x0020

#define MII_CIS8201_AUXCONSTAT_SPEED   0x0018

#define MII_CIS8201_AUXCONSTAT_GBIT    0x0010

#define MII_CIS8201_AUXCONSTAT_100     0x0008

MODULE_DESCRIPTION("Cicadia PHY driver");

MODULE_AUTHOR("Andy Fleming");

MODULE_LICENSE("GPL");

static int cis820x_config_init(struct phy_device *phydev)

{

        int err;

        err = phy_write(phydev, MII_CIS8201_AUX_CONSTAT,

                        MII_CIS8201_AUXCONSTAT_INIT);

        if (err < 0)

                return err;

        err = phy_write(phydev, MII_CIS8201_EXT_CON1,

                        MII_CIS8201_EXTCON1_INIT);

        return err;

}

static int cis820x_ack_interrupt(struct phy_device *phydev)

{

        int err = phy_read(phydev, MII_CIS8201_ISTAT);

        return (err < 0) ? err : 0;

}

static int cis820x_config_intr(struct phy_device *phydev)

{

        int err;

        if(phydev->interrupts == PHY_INTERRUPT_ENABLED)

                err = phy_write(phydev, MII_CIS8201_IMASK,

                                MII_CIS8201_IMASK_MASK);

        else

                err = phy_write(phydev, MII_CIS8201_IMASK, 0);

        return err;

}

/* Cicada 8201, a.k.a Vitesse VSC8201 */

static struct phy_driver cis8201_driver = {

        .phy_id         = 0x000fc410,

        .name           = "Cicada Cis8201",

        .phy_id_mask    = 0x000ffff0,

        .features       = PHY_GBIT_FEATURES,

        .flags          = PHY_HAS_INTERRUPT,

        .config_init    = &cis820x_config_init,

        .config_aneg    = &genphy_config_aneg,

        .read_status    = &genphy_read_status,

        .ack_interrupt  = &cis820x_ack_interrupt,

        .config_intr    = &cis820x_config_intr,

        .driver         = { .owner = THIS_MODULE,},

};

/* Cicada 8204 */

static struct phy_driver cis8204_driver = {

        .phy_id         = 0x000fc440,

        .name           = "Cicada Cis8204",

        .phy_id_mask    = 0x000fffc0,

        .features       = PHY_GBIT_FEATURES,

        .flags          = PHY_HAS_INTERRUPT,

        .config_init    = &cis820x_config_init,

        .config_aneg    = &genphy_config_aneg,

        .read_status    = &genphy_read_status,

        .ack_interrupt  = &cis820x_ack_interrupt,

        .config_intr    = &cis820x_config_intr,

        .driver         = { .owner = THIS_MODULE,},

};

static int __init cicada_init(void)

{

        int ret;

        ret = phy_driver_register(&cis8204_driver);

        if (ret)

                goto err1;

        ret = phy_driver_register(&cis8201_driver);

        if (ret)

                goto err2;

        return 0;

err2:

        phy_driver_unregister(&cis8204_driver);

err1:

        return ret;

}

static void __exit cicada_exit(void)

{

        phy_driver_unregister(&cis8204_driver);

        phy_driver_unregister(&cis8201_driver);

}

module_init(cicada_init);

module_exit(cicada_exit);