summaryrefslogtreecommitdiffstats
path: root/drivers/net/phy/ste10Xp.c
blob: 187a2fa814f27325c3da0c10e6ae258f0ad7cffe (plain)
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
143
144
145
/*
 * drivers/net/phy/ste10Xp.c
 *
 * Driver for STMicroelectronics STe10Xp PHYs
 *
 * Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *
 * Copyright (c) 2008 STMicroelectronics Limited
 *
 * 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/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/phy.h>

#define MII_XCIIS   	0x11	/* Configuration Info IRQ & Status Reg */
#define MII_XIE     	0x12	/* Interrupt Enable Register */
#define MII_XIE_DEFAULT_MASK 0x0070 /* ANE complete, Remote Fault, Link Down */

#define STE101P_PHY_ID		0x00061c50
#define STE100P_PHY_ID       	0x1c040011

static int ste10Xp_config_init(struct phy_device *phydev)
{
	int value, err;

	/* Software Reset PHY */
	value = phy_read(phydev, MII_BMCR);
	if (value < 0)
		return value;

	value |= BMCR_RESET;
	err = phy_write(phydev, MII_BMCR, value);
	if (err < 0)
		return err;

	do {
		value = phy_read(phydev, MII_BMCR);
	} while (value & BMCR_RESET);

	return 0;
}

static int ste10Xp_config_intr(struct phy_device *phydev)
{
	int err, value;

	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
		/* Enable all STe101P interrupts (PR12) */
		err = phy_write(phydev, MII_XIE, MII_XIE_DEFAULT_MASK);
		/* clear any pending interrupts */
		if (err == 0) {
			value = phy_read(phydev, MII_XCIIS);
			if (value < 0)
				err = value;
		}
	} else
		err = phy_write(phydev, MII_XIE, 0);

	return err;
}

static int ste10Xp_ack_interrupt(struct phy_device *phydev)
{
	int err = phy_read(phydev, MII_XCIIS);
	if (err < 0)
		return err;

	return 0;
}

static struct phy_driver ste101p_pdriver = {
	.phy_id = STE101P_PHY_ID,
	.phy_id_mask = 0xfffffff0,
	.name = "STe101p",
	.features = PHY_BASIC_FEATURES | SUPPORTED_Pause,
	.flags = PHY_HAS_INTERRUPT,
	.config_init = ste10Xp_config_init,
	.config_aneg = genphy_config_aneg,
	.read_status = genphy_read_status,
	.ack_interrupt = ste10Xp_ack_interrupt,
	.config_intr = ste10Xp_config_intr,
	.suspend = genphy_suspend,
	.resume = genphy_resume,
	.driver = {.owner = THIS_MODULE,}
};

static struct phy_driver ste100p_pdriver = {
	.phy_id = STE100P_PHY_ID,
	.phy_id_mask = 0xffffffff,
	.name = "STe100p",
	.features = PHY_BASIC_FEATURES | SUPPORTED_Pause,
	.flags = PHY_HAS_INTERRUPT,
	.config_init = ste10Xp_config_init,
	.config_aneg = genphy_config_aneg,
	.read_status = genphy_read_status,
	.ack_interrupt = ste10Xp_ack_interrupt,
	.config_intr = ste10Xp_config_intr,
	.suspend = genphy_suspend,
	.resume = genphy_resume,
	.driver = {.owner = THIS_MODULE,}
};

static int __init ste10Xp_init(void)
{
	int retval;

	retval = phy_driver_register(&ste100p_pdriver);
	if (retval < 0)
		return retval;
	return phy_driver_register(&ste101p_pdriver);
}

static void __exit ste10Xp_exit(void)
{
	phy_driver_unregister(&ste100p_pdriver);
	phy_driver_unregister(&ste101p_pdriver);
}

module_init(ste10Xp_init);
module_exit(ste10Xp_exit);

static struct mdio_device_id __maybe_unused ste10Xp_tbl[] = {
	{ STE101P_PHY_ID, 0xfffffff0 },
	{ STE100P_PHY_ID, 0xffffffff },
	{ }
};

MODULE_DEVICE_TABLE(mdio, ste10Xp_tbl);

MODULE_DESCRIPTION("STMicroelectronics STe10Xp PHY driver");
MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
MODULE_LICENSE("GPL");
OpenPOWER on IntegriCloud