xref: /openbmc/linux/drivers/net/phy/smsc.c (revision 545e4006)
1 /*
2  * drivers/net/phy/smsc.c
3  *
4  * Driver for SMSC PHYs
5  *
6  * Author: Herbert Valerio Riedel
7  *
8  * Copyright (c) 2006 Herbert Valerio Riedel <hvr@gnu.org>
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  * Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@smsc.com
16  *
17  */
18 
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/mii.h>
22 #include <linux/ethtool.h>
23 #include <linux/phy.h>
24 #include <linux/netdevice.h>
25 
26 #define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */
27 #define MII_LAN83C185_IM  30 /* Interrupt Mask */
28 
29 #define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */
30 #define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */
31 #define MII_LAN83C185_ISF_INT3 (1<<3) /* Auto-Negotiation LP Ack */
32 #define MII_LAN83C185_ISF_INT4 (1<<4) /* Link Down */
33 #define MII_LAN83C185_ISF_INT5 (1<<5) /* Remote Fault Detected */
34 #define MII_LAN83C185_ISF_INT6 (1<<6) /* Auto-Negotiation complete */
35 #define MII_LAN83C185_ISF_INT7 (1<<7) /* ENERGYON */
36 
37 #define MII_LAN83C185_ISF_INT_ALL (0x0e)
38 
39 #define MII_LAN83C185_ISF_INT_PHYLIB_EVENTS \
40 	(MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4)
41 
42 
43 static int smsc_phy_config_intr(struct phy_device *phydev)
44 {
45 	int rc = phy_write (phydev, MII_LAN83C185_IM,
46 			((PHY_INTERRUPT_ENABLED == phydev->interrupts)
47 			? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
48 			: 0));
49 
50 	return rc < 0 ? rc : 0;
51 }
52 
53 static int smsc_phy_ack_interrupt(struct phy_device *phydev)
54 {
55 	int rc = phy_read (phydev, MII_LAN83C185_ISF);
56 
57 	return rc < 0 ? rc : 0;
58 }
59 
60 static int smsc_phy_config_init(struct phy_device *phydev)
61 {
62 	return smsc_phy_ack_interrupt (phydev);
63 }
64 
65 
66 static struct phy_driver lan83c185_driver = {
67 	.phy_id		= 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
68 	.phy_id_mask	= 0xfffffff0,
69 	.name		= "SMSC LAN83C185",
70 
71 	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause
72 				| SUPPORTED_Asym_Pause),
73 	.flags		= PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
74 
75 	/* basic functions */
76 	.config_aneg	= genphy_config_aneg,
77 	.read_status	= genphy_read_status,
78 	.config_init	= smsc_phy_config_init,
79 
80 	/* IRQ related */
81 	.ack_interrupt	= smsc_phy_ack_interrupt,
82 	.config_intr	= smsc_phy_config_intr,
83 
84 	.driver		= { .owner = THIS_MODULE, }
85 };
86 
87 static struct phy_driver lan8187_driver = {
88 	.phy_id		= 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
89 	.phy_id_mask	= 0xfffffff0,
90 	.name		= "SMSC LAN8187",
91 
92 	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause
93 				| SUPPORTED_Asym_Pause),
94 	.flags		= PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
95 
96 	/* basic functions */
97 	.config_aneg	= genphy_config_aneg,
98 	.read_status	= genphy_read_status,
99 	.config_init	= smsc_phy_config_init,
100 
101 	/* IRQ related */
102 	.ack_interrupt	= smsc_phy_ack_interrupt,
103 	.config_intr	= smsc_phy_config_intr,
104 
105 	.driver		= { .owner = THIS_MODULE, }
106 };
107 
108 static struct phy_driver lan8700_driver = {
109 	.phy_id		= 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
110 	.phy_id_mask	= 0xfffffff0,
111 	.name		= "SMSC LAN8700",
112 
113 	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause
114 				| SUPPORTED_Asym_Pause),
115 	.flags		= PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
116 
117 	/* basic functions */
118 	.config_aneg	= genphy_config_aneg,
119 	.read_status	= genphy_read_status,
120 	.config_init	= smsc_phy_config_init,
121 
122 	/* IRQ related */
123 	.ack_interrupt	= smsc_phy_ack_interrupt,
124 	.config_intr	= smsc_phy_config_intr,
125 
126 	.driver		= { .owner = THIS_MODULE, }
127 };
128 
129 static int __init smsc_init(void)
130 {
131 	int ret;
132 
133 	ret = phy_driver_register (&lan83c185_driver);
134 	if (ret)
135 		goto err1;
136 
137 	ret = phy_driver_register (&lan8187_driver);
138 	if (ret)
139 		goto err2;
140 
141 	ret = phy_driver_register (&lan8700_driver);
142 	if (ret)
143 		goto err3;
144 
145 	return 0;
146 
147 err3:
148 	phy_driver_unregister (&lan8187_driver);
149 err2:
150 	phy_driver_unregister (&lan83c185_driver);
151 err1:
152 	return ret;
153 }
154 
155 static void __exit smsc_exit(void)
156 {
157 	phy_driver_unregister (&lan8700_driver);
158 	phy_driver_unregister (&lan8187_driver);
159 	phy_driver_unregister (&lan83c185_driver);
160 }
161 
162 MODULE_DESCRIPTION("SMSC PHY driver");
163 MODULE_AUTHOR("Herbert Valerio Riedel");
164 MODULE_LICENSE("GPL");
165 
166 module_init(smsc_init);
167 module_exit(smsc_exit);
168