summaryrefslogtreecommitdiff
path: root/drivers/net/phy/ste10Xp.c
blob: 2fe9a87b55b5b5c15047714016525475cb042003 (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
/*
 * 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 ste10xp_pdriver[] = {
{
	.phy_id = STE101P_PHY_ID,
	.phy_id_mask = 0xfffffff0,
	.name = "STe101p",
	.features = PHY_BASIC_FEATURES,
	.flags = PHY_HAS_INTERRUPT,
	.config_init = ste10Xp_config_init,
	.ack_interrupt = ste10Xp_ack_interrupt,
	.config_intr = ste10Xp_config_intr,
	.suspend = genphy_suspend,
	.resume = genphy_resume,
}, {
	.phy_id = STE100P_PHY_ID,
	.phy_id_mask = 0xffffffff,
	.name = "STe100p",
	.features = PHY_BASIC_FEATURES,
	.flags = PHY_HAS_INTERRUPT,
	.config_init = ste10Xp_config_init,
	.ack_interrupt = ste10Xp_ack_interrupt,
	.config_intr = ste10Xp_config_intr,
	.suspend = genphy_suspend,
	.resume = genphy_resume,
} };

module_phy_driver(ste10xp_pdriver);

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");