ste10Xp.c revision d5bf9071e71a4db85a0eea6236ef94a29fc3eec9 
1/*
2 * drivers/net/phy/ste10Xp.c
3 *
4 * Driver for STMicroelectronics STe10Xp PHYs
5 *
6 * Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
7 *
8 * Copyright (c) 2008 STMicroelectronics Limited
9 *
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.
14 *
15 */
16
17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/sched.h>
20#include <linux/kernel.h>
21#include <linux/moduleparam.h>
22#include <linux/interrupt.h>
23#include <linux/netdevice.h>
24#include <linux/ethtool.h>
25#include <linux/mii.h>
26#include <linux/phy.h>
27
28#define MII_XCIIS   	0x11	/* Configuration Info IRQ & Status Reg */
29#define MII_XIE     	0x12	/* Interrupt Enable Register */
30#define MII_XIE_DEFAULT_MASK 0x0070 /* ANE complete, Remote Fault, Link Down */
31
32#define STE101P_PHY_ID		0x00061c50
33#define STE100P_PHY_ID       	0x1c040011
34
35static int ste10Xp_config_init(struct phy_device *phydev)
36{
37	int value, err;
38
39	/* Software Reset PHY */
40	value = phy_read(phydev, MII_BMCR);
41	if (value < 0)
42		return value;
43
44	value |= BMCR_RESET;
45	err = phy_write(phydev, MII_BMCR, value);
46	if (err < 0)
47		return err;
48
49	do {
50		value = phy_read(phydev, MII_BMCR);
51	} while (value & BMCR_RESET);
52
53	return 0;
54}
55
56static int ste10Xp_config_intr(struct phy_device *phydev)
57{
58	int err, value;
59
60	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
61		/* Enable all STe101P interrupts (PR12) */
62		err = phy_write(phydev, MII_XIE, MII_XIE_DEFAULT_MASK);
63		/* clear any pending interrupts */
64		if (err == 0) {
65			value = phy_read(phydev, MII_XCIIS);
66			if (value < 0)
67				err = value;
68		}
69	} else
70		err = phy_write(phydev, MII_XIE, 0);
71
72	return err;
73}
74
75static int ste10Xp_ack_interrupt(struct phy_device *phydev)
76{
77	int err = phy_read(phydev, MII_XCIIS);
78	if (err < 0)
79		return err;
80
81	return 0;
82}
83
84static struct phy_driver ste10xp_pdriver[] = {
85{
86	.phy_id = STE101P_PHY_ID,
87	.phy_id_mask = 0xfffffff0,
88	.name = "STe101p",
89	.features = PHY_BASIC_FEATURES | SUPPORTED_Pause,
90	.flags = PHY_HAS_INTERRUPT,
91	.config_init = ste10Xp_config_init,
92	.config_aneg = genphy_config_aneg,
93	.read_status = genphy_read_status,
94	.ack_interrupt = ste10Xp_ack_interrupt,
95	.config_intr = ste10Xp_config_intr,
96	.suspend = genphy_suspend,
97	.resume = genphy_resume,
98	.driver = {.owner = THIS_MODULE,}
99}, {
100	.phy_id = STE100P_PHY_ID,
101	.phy_id_mask = 0xffffffff,
102	.name = "STe100p",
103	.features = PHY_BASIC_FEATURES | SUPPORTED_Pause,
104	.flags = PHY_HAS_INTERRUPT,
105	.config_init = ste10Xp_config_init,
106	.config_aneg = genphy_config_aneg,
107	.read_status = genphy_read_status,
108	.ack_interrupt = ste10Xp_ack_interrupt,
109	.config_intr = ste10Xp_config_intr,
110	.suspend = genphy_suspend,
111	.resume = genphy_resume,
112	.driver = {.owner = THIS_MODULE,}
113} };
114
115static int __init ste10Xp_init(void)
116{
117	return phy_drivers_register(ste10xp_pdriver,
118		ARRAY_SIZE(ste10xp_pdriver));
119}
120
121static void __exit ste10Xp_exit(void)
122{
123	phy_drivers_unregister(ste10xp_pdriver,
124		ARRAY_SIZE(ste10xp_pdriver));
125}
126
127module_init(ste10Xp_init);
128module_exit(ste10Xp_exit);
129
130static struct mdio_device_id __maybe_unused ste10Xp_tbl[] = {
131	{ STE101P_PHY_ID, 0xfffffff0 },
132	{ STE100P_PHY_ID, 0xffffffff },
133	{ }
134};
135
136MODULE_DEVICE_TABLE(mdio, ste10Xp_tbl);
137
138MODULE_DESCRIPTION("STMicroelectronics STe10Xp PHY driver");
139MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
140MODULE_LICENSE("GPL");
141