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Jon Loeligeref82a302006-06-17 17:52:55 -05001/*
2 * Driver for Vitesse PHYs
3 *
4 * Author: Kriston Carson
5 *
6 * Copyright (c) 2005 Freescale Semiconductor, Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 */
14
15#include <linux/config.h>
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/mii.h>
19#include <linux/ethtool.h>
20#include <linux/phy.h>
21
22/* Vitesse Extended Control Register 1 */
23#define MII_VSC8244_EXT_CON1 0x17
24#define MII_VSC8244_EXTCON1_INIT 0x0000
25
26/* Vitesse Interrupt Mask Register */
27#define MII_VSC8244_IMASK 0x19
28#define MII_VSC8244_IMASK_IEN 0x8000
29#define MII_VSC8244_IMASK_SPEED 0x4000
30#define MII_VSC8244_IMASK_LINK 0x2000
31#define MII_VSC8244_IMASK_DUPLEX 0x1000
32#define MII_VSC8244_IMASK_MASK 0xf000
33
34/* Vitesse Interrupt Status Register */
35#define MII_VSC8244_ISTAT 0x1a
36#define MII_VSC8244_ISTAT_STATUS 0x8000
37#define MII_VSC8244_ISTAT_SPEED 0x4000
38#define MII_VSC8244_ISTAT_LINK 0x2000
39#define MII_VSC8244_ISTAT_DUPLEX 0x1000
40
41/* Vitesse Auxiliary Control/Status Register */
42#define MII_VSC8244_AUX_CONSTAT 0x1c
43#define MII_VSC8244_AUXCONSTAT_INIT 0x0004
44#define MII_VSC8244_AUXCONSTAT_DUPLEX 0x0020
45#define MII_VSC8244_AUXCONSTAT_SPEED 0x0018
46#define MII_VSC8244_AUXCONSTAT_GBIT 0x0010
47#define MII_VSC8244_AUXCONSTAT_100 0x0008
48
49MODULE_DESCRIPTION("Vitesse PHY driver");
50MODULE_AUTHOR("Kriston Carson");
51MODULE_LICENSE("GPL");
52
53static int vsc824x_config_init(struct phy_device *phydev)
54{
55 int err;
56
57 err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT,
58 MII_VSC8244_AUXCONSTAT_INIT);
59 if (err < 0)
60 return err;
61
62 err = phy_write(phydev, MII_VSC8244_EXT_CON1,
63 MII_VSC8244_EXTCON1_INIT);
64 return err;
65}
66
67static int vsc824x_ack_interrupt(struct phy_device *phydev)
68{
69 int err = phy_read(phydev, MII_VSC8244_ISTAT);
70
71 return (err < 0) ? err : 0;
72}
73
74static int vsc824x_config_intr(struct phy_device *phydev)
75{
76 int err;
77
78 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
79 err = phy_write(phydev, MII_VSC8244_IMASK,
80 MII_VSC8244_IMASK_MASK);
81 else
82 err = phy_write(phydev, MII_VSC8244_IMASK, 0);
83 return err;
84}
85
86/* Vitesse 824x */
87static struct phy_driver vsc8244_driver = {
88 .phy_id = 0x000fc6c2,
89 .name = "Vitesse VSC8244",
90 .phy_id_mask = 0x000fffc0,
91 .features = PHY_GBIT_FEATURES,
92 .flags = PHY_HAS_INTERRUPT,
93 .config_init = &vsc824x_config_init,
94 .config_aneg = &genphy_config_aneg,
95 .read_status = &genphy_read_status,
96 .ack_interrupt = &vsc824x_ack_interrupt,
97 .config_intr = &vsc824x_config_intr,
98 .driver = { .owner = THIS_MODULE,},
99};
100
101static int __init vsc8244_init(void)
102{
103 return phy_driver_register(&vsc8244_driver);
104}
105
106static void __exit vsc8244_exit(void)
107{
108 phy_driver_unregister(&vsc8244_driver);
109}
110
111module_init(vsc8244_init);
112module_exit(vsc8244_exit);