2 * drivers/net/phy/cicada.c
4 * Driver for Cicada PHYs
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
16 #include <linux/config.h>
17 #include <linux/kernel.h>
18 #include <linux/sched.h>
19 #include <linux/string.h>
20 #include <linux/errno.h>
21 #include <linux/unistd.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/init.h>
25 #include <linux/delay.h>
26 #include <linux/netdevice.h>
27 #include <linux/etherdevice.h>
28 #include <linux/skbuff.h>
29 #include <linux/spinlock.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/mii.h>
34 #include <linux/ethtool.h>
35 #include <linux/phy.h>
39 #include <asm/uaccess.h>
41 /* Cicada Extended Control Register 1 */
42 #define MII_CIS8201_EXT_CON1 0x17
43 #define MII_CIS8201_EXTCON1_INIT 0x0000
45 /* Cicada Interrupt Mask Register */
46 #define MII_CIS8201_IMASK 0x19
47 #define MII_CIS8201_IMASK_IEN 0x8000
48 #define MII_CIS8201_IMASK_SPEED 0x4000
49 #define MII_CIS8201_IMASK_LINK 0x2000
50 #define MII_CIS8201_IMASK_DUPLEX 0x1000
51 #define MII_CIS8201_IMASK_MASK 0xf000
53 /* Cicada Interrupt Status Register */
54 #define MII_CIS8201_ISTAT 0x1a
55 #define MII_CIS8201_ISTAT_STATUS 0x8000
56 #define MII_CIS8201_ISTAT_SPEED 0x4000
57 #define MII_CIS8201_ISTAT_LINK 0x2000
58 #define MII_CIS8201_ISTAT_DUPLEX 0x1000
60 /* Cicada Auxiliary Control/Status Register */
61 #define MII_CIS8201_AUX_CONSTAT 0x1c
62 #define MII_CIS8201_AUXCONSTAT_INIT 0x0004
63 #define MII_CIS8201_AUXCONSTAT_DUPLEX 0x0020
64 #define MII_CIS8201_AUXCONSTAT_SPEED 0x0018
65 #define MII_CIS8201_AUXCONSTAT_GBIT 0x0010
66 #define MII_CIS8201_AUXCONSTAT_100 0x0008
68 MODULE_DESCRIPTION("Cicadia PHY driver");
69 MODULE_AUTHOR("Andy Fleming");
70 MODULE_LICENSE("GPL");
72 static int cis820x_config_init(struct phy_device *phydev)
76 err = phy_write(phydev, MII_CIS8201_AUX_CONSTAT,
77 MII_CIS8201_AUXCONSTAT_INIT);
82 err = phy_write(phydev, MII_CIS8201_EXT_CON1,
83 MII_CIS8201_EXTCON1_INIT);
88 static int cis820x_ack_interrupt(struct phy_device *phydev)
90 int err = phy_read(phydev, MII_CIS8201_ISTAT);
92 return (err < 0) ? err : 0;
95 static int cis820x_config_intr(struct phy_device *phydev)
99 if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
100 err = phy_write(phydev, MII_CIS8201_IMASK,
101 MII_CIS8201_IMASK_MASK);
103 err = phy_write(phydev, MII_CIS8201_IMASK, 0);
109 static struct phy_driver cis8204_driver = {
110 .phy_id = 0x000fc440,
111 .name = "Cicada Cis8204",
112 .phy_id_mask = 0x000fffc0,
113 .features = PHY_GBIT_FEATURES,
114 .flags = PHY_HAS_INTERRUPT,
115 .config_init = &cis820x_config_init,
116 .config_aneg = &genphy_config_aneg,
117 .read_status = &genphy_read_status,
118 .ack_interrupt = &cis820x_ack_interrupt,
119 .config_intr = &cis820x_config_intr,
120 .driver = { .owner = THIS_MODULE,},
123 static int __init cis8204_init(void)
125 return phy_driver_register(&cis8204_driver);
128 static void __exit cis8204_exit(void)
130 phy_driver_unregister(&cis8204_driver);
133 module_init(cis8204_init);
134 module_exit(cis8204_exit);