2 * Driver for Micrel/Kendin PHYs
4 * Copyright (c) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
13 #include <linux/module.h>
14 #include <linux/delay.h>
15 #include <linux/skbuff.h>
16 #include <linux/phy.h>
18 #define KSZ_REG_INT_CTRL 0x1b
20 #define KSZ_INT_LU_EN (1 << 8) /* enable Link Up interrupt */
21 #define KSZ_INT_RF_EN (1 << 9) /* enable Remote Fault interrupt */
22 #define KSZ_INT_LD_EN (1 << 10) /* enable Link Down interrupt */
24 #define KSZ_INT_INIT (KSZ_INT_LU_EN | KSZ_INT_LD_EN)
26 static int ksz8041_ack_interrupt(struct phy_device *phydev)
30 err = phy_read(phydev, KSZ_REG_INT_CTRL);
32 return (err < 0) ? err : 0;
35 static int ksz8041_config_intr(struct phy_device *phydev)
39 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
40 err = phy_write(phydev, KSZ_REG_INT_CTRL,
43 err = phy_write(phydev, KSZ_REG_INT_CTRL, 0);
48 static struct phy_driver ksz8041_phy_driver = {
50 .name = "Micrel KSZ8041",
51 .phy_id_mask = 0x001fffff,
52 .features = PHY_BASIC_FEATURES,
53 .flags = PHY_HAS_INTERRUPT,
54 .config_aneg = genphy_config_aneg,
55 .read_status = genphy_read_status,
56 .ack_interrupt = ksz8041_ack_interrupt,
57 .config_intr = ksz8041_config_intr,
63 static int __init micrel_phy_init(void)
65 return phy_driver_register(&ksz8041_phy_driver);
68 static void __exit micrel_phy_exit(void)
70 phy_driver_unregister(&ksz8041_phy_driver);
74 module_init(micrel_phy_init);
75 module_exit(micrel_phy_exit);
77 subsys_initcall(micrel_phy_init);
80 MODULE_DESCRIPTION("Micrel/Kendin PHY driver");
81 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
82 MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
83 MODULE_LICENSE("GPL v2");