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/*
* Driver for Micrel/Kendin PHYs
*
* Copyright (c) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
*/
#include <linux/delay.h>
#include <linux/skbuff.h>
#include <linux/phy.h>
#define KSZ_REG_INT_CTRL 0x1b
#define KSZ_INT_LU_EN (1 << 8) /* enable Link Up interrupt */
#define KSZ_INT_RF_EN (1 << 9) /* enable Remote Fault interrupt */
#define KSZ_INT_LD_EN (1 << 10) /* enable Link Down interrupt */
#define KSZ_INT_INIT (KSZ_INT_LU_EN | KSZ_INT_LD_EN)
static int ksz8041_ack_interrupt(struct phy_device *phydev)
{
int err;
err = phy_read(phydev, KSZ_REG_INT_CTRL);
return (err < 0) ? err : 0;
}
static int ksz8041_config_intr(struct phy_device *phydev)
{
int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
err = phy_write(phydev, KSZ_REG_INT_CTRL,
KSZ_INT_INIT);
else
err = phy_write(phydev, KSZ_REG_INT_CTRL, 0);
return err;
}
static struct phy_driver ksz8041_phy_driver = {
.phy_id = 0x00221512,
.name = "Micrel KSZ8041",
.phy_id_mask = 0x001fffff,
.features = PHY_BASIC_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.ack_interrupt = ksz8041_ack_interrupt,
.config_intr = ksz8041_config_intr,
.driver = {
.owner = THIS_MODULE,
},
};
static int __init micrel_phy_init(void)
{
return phy_driver_register(&ksz8041_phy_driver);
}
static void __exit micrel_phy_exit(void)
{
phy_driver_unregister(&ksz8041_phy_driver);
}
#ifdef MODULE
module_init(micrel_phy_init);
module_exit(micrel_phy_exit);
#else
subsys_initcall(micrel_phy_init);
#endif
MODULE_DESCRIPTION("Micrel/Kendin PHY driver");
MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
MODULE_LICENSE("GPL v2");
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