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