1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* Driver for ICPlus PHYs
*
* Copyright (c) 2007 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/unistd.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
MODULE_DESCRIPTION("ICPlus IP175C PHY driver");
MODULE_AUTHOR("Michael Barkowski");
MODULE_LICENSE("GPL");
static int ip175c_config_init(struct phy_device *phydev)
{
int err, i;
static int full_reset_performed = 0;
if (full_reset_performed == 0) {
/* master reset */
err = phydev->bus->write(phydev->bus, 30, 0, 0x175c);
if (err < 0)
return err;
/* ensure no bus delays overlap reset period */
err = phydev->bus->read(phydev->bus, 30, 0);
/* data sheet specifies reset period is 2 msec */
mdelay(2);
/* enable IP175C mode */
err = phydev->bus->write(phydev->bus, 29, 31, 0x175c);
if (err < 0)
return err;
/* Set MII0 speed and duplex (in PHY mode) */
err = phydev->bus->write(phydev->bus, 29, 22, 0x420);
if (err < 0)
return err;
/* reset switch ports */
for (i = 0; i < 5; i++) {
err = phydev->bus->write(phydev->bus, i,
MII_BMCR, BMCR_RESET);
if (err < 0)
return err;
}
for (i = 0; i < 5; i++)
err = phydev->bus->read(phydev->bus, i, MII_BMCR);
mdelay(2);
full_reset_performed = 1;
}
if (phydev->addr != 4) {
phydev->state = PHY_RUNNING;
phydev->speed = SPEED_100;
phydev->duplex = DUPLEX_FULL;
phydev->link = 1;
netif_carrier_on(phydev->attached_dev);
}
return 0;
}
static int ip175c_read_status(struct phy_device *phydev)
{
if (phydev->addr == 4) /* WAN port */
genphy_read_status(phydev);
else
/* Don't need to read status for switch ports */
phydev->irq = PHY_IGNORE_INTERRUPT;
return 0;
}
static int ip175c_config_aneg(struct phy_device *phydev)
{
if (phydev->addr == 4) /* WAN port */
genphy_config_aneg(phydev);
return 0;
}
static struct phy_driver ip175c_driver = {
.phy_id = 0x02430d80,
.name = "ICPlus IP175C",
.phy_id_mask = 0x0ffffff0,
.features = PHY_BASIC_FEATURES,
.config_init = &ip175c_config_init,
.config_aneg = &ip175c_config_aneg,
.read_status = &ip175c_read_status,
.suspend = genphy_suspend,
.resume = genphy_resume,
.driver = { .owner = THIS_MODULE,},
};
static int __init ip175c_init(void)
{
return phy_driver_register(&ip175c_driver);
}
static void __exit ip175c_exit(void)
{
phy_driver_unregister(&ip175c_driver);
}
module_init(ip175c_init);
module_exit(ip175c_exit);
static struct mdio_device_id icplus_tbl[] = {
{ 0x02430d80, 0x0ffffff0 },
{ }
};
MODULE_DEVICE_TABLE(mdio, icplus_tbl);
|
