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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#define MII_LAN83C185_CTRL_STATUS 17 /* Mode/Status Register */
29
30#define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */
31#define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */
32#define MII_LAN83C185_ISF_INT3 (1<<3) /* Auto-Negotiation LP Ack */
33#define MII_LAN83C185_ISF_INT4 (1<<4) /* Link Down */
34#define MII_LAN83C185_ISF_INT5 (1<<5) /* Remote Fault Detected */
35#define MII_LAN83C185_ISF_INT6 (1<<6) /* Auto-Negotiation complete */
36#define MII_LAN83C185_ISF_INT7 (1<<7) /* ENERGYON */
37
38#define MII_LAN83C185_ISF_INT_ALL (0x0e)
39
40#define MII_LAN83C185_ISF_INT_PHYLIB_EVENTS \
41 (MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4 | \
42 MII_LAN83C185_ISF_INT7)
43
44#define MII_LAN83C185_EDPWRDOWN (1 << 13) /* EDPWRDOWN */
45
46static int smsc_phy_config_intr(struct phy_device *phydev)
47{
48 int rc = phy_write (phydev, MII_LAN83C185_IM,
49 ((PHY_INTERRUPT_ENABLED == phydev->interrupts)
50 ? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
51 : 0));
52
53 return rc < 0 ? rc : 0;
54}
55
56static int smsc_phy_ack_interrupt(struct phy_device *phydev)
57{
58 int rc = phy_read (phydev, MII_LAN83C185_ISF);
59
60 return rc < 0 ? rc : 0;
61}
62
63static int smsc_phy_config_init(struct phy_device *phydev)
64{
65 int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
66 if (rc < 0)
67 return rc;
68
69 /* Enable energy detect mode for this SMSC Transceivers */
70 rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
71 rc | MII_LAN83C185_EDPWRDOWN);
72 if (rc < 0)
73 return rc;
74
75 return smsc_phy_ack_interrupt (phydev);
76}
77
78static int lan911x_config_init(struct phy_device *phydev)
79{
80 return smsc_phy_ack_interrupt(phydev);
81}
82
83static struct phy_driver lan83c185_driver = {
84 .phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
85 .phy_id_mask = 0xfffffff0,
86 .name = "SMSC LAN83C185",
87
88 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
89 | SUPPORTED_Asym_Pause),
90 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
91
92 /* basic functions */
93 .config_aneg = genphy_config_aneg,
94 .read_status = genphy_read_status,
95 .config_init = smsc_phy_config_init,
96
97 /* IRQ related */
98 .ack_interrupt = smsc_phy_ack_interrupt,
99 .config_intr = smsc_phy_config_intr,
100
101 .suspend = genphy_suspend,
102 .resume = genphy_resume,
103
104 .driver = { .owner = THIS_MODULE, }
105};
106
107static struct phy_driver lan8187_driver = {
108 .phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
109 .phy_id_mask = 0xfffffff0,
110 .name = "SMSC LAN8187",
111
112 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
113 | SUPPORTED_Asym_Pause),
114 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
115
116 /* basic functions */
117 .config_aneg = genphy_config_aneg,
118 .read_status = genphy_read_status,
119 .config_init = smsc_phy_config_init,
120
121 /* IRQ related */
122 .ack_interrupt = smsc_phy_ack_interrupt,
123 .config_intr = smsc_phy_config_intr,
124
125 .suspend = genphy_suspend,
126 .resume = genphy_resume,
127
128 .driver = { .owner = THIS_MODULE, }
129};
130
131static struct phy_driver lan8700_driver = {
132 .phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
133 .phy_id_mask = 0xfffffff0,
134 .name = "SMSC LAN8700",
135
136 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
137 | SUPPORTED_Asym_Pause),
138 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
139
140 /* basic functions */
141 .config_aneg = genphy_config_aneg,
142 .read_status = genphy_read_status,
143 .config_init = smsc_phy_config_init,
144
145 /* IRQ related */
146 .ack_interrupt = smsc_phy_ack_interrupt,
147 .config_intr = smsc_phy_config_intr,
148
149 .suspend = genphy_suspend,
150 .resume = genphy_resume,
151
152 .driver = { .owner = THIS_MODULE, }
153};
154
155static struct phy_driver lan911x_int_driver = {
156 .phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
157 .phy_id_mask = 0xfffffff0,
158 .name = "SMSC LAN911x Internal PHY",
159
160 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
161 | SUPPORTED_Asym_Pause),
162 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
163
164 /* basic functions */
165 .config_aneg = genphy_config_aneg,
166 .read_status = genphy_read_status,
167 .config_init = lan911x_config_init,
168
169 /* IRQ related */
170 .ack_interrupt = smsc_phy_ack_interrupt,
171 .config_intr = smsc_phy_config_intr,
172
173 .suspend = genphy_suspend,
174 .resume = genphy_resume,
175
176 .driver = { .owner = THIS_MODULE, }
177};
178
179static struct phy_driver lan8710_driver = {
180 .phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
181 .phy_id_mask = 0xfffffff0,
182 .name = "SMSC LAN8710/LAN8720",
183
184 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
185 | SUPPORTED_Asym_Pause),
186 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
187
188 /* basic functions */
189 .config_aneg = genphy_config_aneg,
190 .read_status = genphy_read_status,
191 .config_init = smsc_phy_config_init,
192
193 /* IRQ related */
194 .ack_interrupt = smsc_phy_ack_interrupt,
195 .config_intr = smsc_phy_config_intr,
196
197 .suspend = genphy_suspend,
198 .resume = genphy_resume,
199
200 .driver = { .owner = THIS_MODULE, }
201};
202
203static int __init smsc_init(void)
204{
205 int ret;
206
207 ret = phy_driver_register (&lan83c185_driver);
208 if (ret)
209 goto err1;
210
211 ret = phy_driver_register (&lan8187_driver);
212 if (ret)
213 goto err2;
214
215 ret = phy_driver_register (&lan8700_driver);
216 if (ret)
217 goto err3;
218
219 ret = phy_driver_register (&lan911x_int_driver);
220 if (ret)
221 goto err4;
222
223 ret = phy_driver_register (&lan8710_driver);
224 if (ret)
225 goto err5;
226
227 return 0;
228
229err5:
230 phy_driver_unregister (&lan911x_int_driver);
231err4:
232 phy_driver_unregister (&lan8700_driver);
233err3:
234 phy_driver_unregister (&lan8187_driver);
235err2:
236 phy_driver_unregister (&lan83c185_driver);
237err1:
238 return ret;
239}
240
241static void __exit smsc_exit(void)
242{
243 phy_driver_unregister (&lan8710_driver);
244 phy_driver_unregister (&lan911x_int_driver);
245 phy_driver_unregister (&lan8700_driver);
246 phy_driver_unregister (&lan8187_driver);
247 phy_driver_unregister (&lan83c185_driver);
248}
249
250MODULE_DESCRIPTION("SMSC PHY driver");
251MODULE_AUTHOR("Herbert Valerio Riedel");
252MODULE_LICENSE("GPL");
253
254module_init(smsc_init);
255module_exit(smsc_exit);
256
257static struct mdio_device_id __maybe_unused smsc_tbl[] = {
258 { 0x0007c0a0, 0xfffffff0 },
259 { 0x0007c0b0, 0xfffffff0 },
260 { 0x0007c0c0, 0xfffffff0 },
261 { 0x0007c0d0, 0xfffffff0 },
262 { 0x0007c0f0, 0xfffffff0 },
263 { }
264};
265
266MODULE_DEVICE_TABLE(mdio, smsc_tbl);
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@shawell.net
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#include <linux/smscphy.h>
26
27static int smsc_phy_config_intr(struct phy_device *phydev)
28{
29 int rc = phy_write (phydev, MII_LAN83C185_IM,
30 ((PHY_INTERRUPT_ENABLED == phydev->interrupts)
31 ? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
32 : 0));
33
34 return rc < 0 ? rc : 0;
35}
36
37static int smsc_phy_ack_interrupt(struct phy_device *phydev)
38{
39 int rc = phy_read (phydev, MII_LAN83C185_ISF);
40
41 return rc < 0 ? rc : 0;
42}
43
44static int smsc_phy_config_init(struct phy_device *phydev)
45{
46 int rc = phy_read(phydev, MII_LAN83C185_SPECIAL_MODES);
47 if (rc < 0)
48 return rc;
49
50 /* If the SMSC PHY is in power down mode, then set it
51 * in all capable mode before using it.
52 */
53 if ((rc & MII_LAN83C185_MODE_MASK) == MII_LAN83C185_MODE_POWERDOWN) {
54 int timeout = 50000;
55
56 /* set "all capable" mode and reset the phy */
57 rc |= MII_LAN83C185_MODE_ALL;
58 phy_write(phydev, MII_LAN83C185_SPECIAL_MODES, rc);
59 phy_write(phydev, MII_BMCR, BMCR_RESET);
60
61 /* wait end of reset (max 500 ms) */
62 do {
63 udelay(10);
64 if (timeout-- == 0)
65 return -1;
66 rc = phy_read(phydev, MII_BMCR);
67 } while (rc & BMCR_RESET);
68 }
69
70 rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
71 if (rc < 0)
72 return rc;
73
74 /* Enable energy detect mode for this SMSC Transceivers */
75 rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
76 rc | MII_LAN83C185_EDPWRDOWN);
77 if (rc < 0)
78 return rc;
79
80 return smsc_phy_ack_interrupt (phydev);
81}
82
83static int lan911x_config_init(struct phy_device *phydev)
84{
85 return smsc_phy_ack_interrupt(phydev);
86}
87
88/*
89 * The LAN8710/LAN8720 requires a minimum of 2 link pulses within 64ms of each
90 * other in order to set the ENERGYON bit and exit EDPD mode. If a link partner
91 * does send the pulses within this interval, the PHY will remained powered
92 * down.
93 *
94 * This workaround will manually toggle the PHY on/off upon calls to read_status
95 * in order to generate link test pulses if the link is down. If a link partner
96 * is present, it will respond to the pulses, which will cause the ENERGYON bit
97 * to be set and will cause the EDPD mode to be exited.
98 */
99static int lan87xx_read_status(struct phy_device *phydev)
100{
101 int err = genphy_read_status(phydev);
102
103 if (!phydev->link) {
104 /* Disable EDPD to wake up PHY */
105 int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
106 if (rc < 0)
107 return rc;
108
109 rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
110 rc & ~MII_LAN83C185_EDPWRDOWN);
111 if (rc < 0)
112 return rc;
113
114 /* Sleep 64 ms to allow ~5 link test pulses to be sent */
115 msleep(64);
116
117 /* Re-enable EDPD */
118 rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
119 if (rc < 0)
120 return rc;
121
122 rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
123 rc | MII_LAN83C185_EDPWRDOWN);
124 if (rc < 0)
125 return rc;
126 }
127
128 return err;
129}
130
131static struct phy_driver smsc_phy_driver[] = {
132{
133 .phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
134 .phy_id_mask = 0xfffffff0,
135 .name = "SMSC LAN83C185",
136
137 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
138 | SUPPORTED_Asym_Pause),
139 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
140
141 /* basic functions */
142 .config_aneg = genphy_config_aneg,
143 .read_status = genphy_read_status,
144 .config_init = smsc_phy_config_init,
145
146 /* IRQ related */
147 .ack_interrupt = smsc_phy_ack_interrupt,
148 .config_intr = smsc_phy_config_intr,
149
150 .suspend = genphy_suspend,
151 .resume = genphy_resume,
152
153 .driver = { .owner = THIS_MODULE, }
154}, {
155 .phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */
156 .phy_id_mask = 0xfffffff0,
157 .name = "SMSC LAN8187",
158
159 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
160 | SUPPORTED_Asym_Pause),
161 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
162
163 /* basic functions */
164 .config_aneg = genphy_config_aneg,
165 .read_status = genphy_read_status,
166 .config_init = smsc_phy_config_init,
167
168 /* IRQ related */
169 .ack_interrupt = smsc_phy_ack_interrupt,
170 .config_intr = smsc_phy_config_intr,
171
172 .suspend = genphy_suspend,
173 .resume = genphy_resume,
174
175 .driver = { .owner = THIS_MODULE, }
176}, {
177 .phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */
178 .phy_id_mask = 0xfffffff0,
179 .name = "SMSC LAN8700",
180
181 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
182 | SUPPORTED_Asym_Pause),
183 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
184
185 /* basic functions */
186 .config_aneg = genphy_config_aneg,
187 .read_status = genphy_read_status,
188 .config_init = smsc_phy_config_init,
189
190 /* IRQ related */
191 .ack_interrupt = smsc_phy_ack_interrupt,
192 .config_intr = smsc_phy_config_intr,
193
194 .suspend = genphy_suspend,
195 .resume = genphy_resume,
196
197 .driver = { .owner = THIS_MODULE, }
198}, {
199 .phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */
200 .phy_id_mask = 0xfffffff0,
201 .name = "SMSC LAN911x Internal PHY",
202
203 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
204 | SUPPORTED_Asym_Pause),
205 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
206
207 /* basic functions */
208 .config_aneg = genphy_config_aneg,
209 .read_status = genphy_read_status,
210 .config_init = lan911x_config_init,
211
212 /* IRQ related */
213 .ack_interrupt = smsc_phy_ack_interrupt,
214 .config_intr = smsc_phy_config_intr,
215
216 .suspend = genphy_suspend,
217 .resume = genphy_resume,
218
219 .driver = { .owner = THIS_MODULE, }
220}, {
221 .phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */
222 .phy_id_mask = 0xfffffff0,
223 .name = "SMSC LAN8710/LAN8720",
224
225 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
226 | SUPPORTED_Asym_Pause),
227 .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG,
228
229 /* basic functions */
230 .config_aneg = genphy_config_aneg,
231 .read_status = lan87xx_read_status,
232 .config_init = smsc_phy_config_init,
233
234 /* IRQ related */
235 .ack_interrupt = smsc_phy_ack_interrupt,
236 .config_intr = smsc_phy_config_intr,
237
238 .suspend = genphy_suspend,
239 .resume = genphy_resume,
240
241 .driver = { .owner = THIS_MODULE, }
242} };
243
244static int __init smsc_init(void)
245{
246 return phy_drivers_register(smsc_phy_driver,
247 ARRAY_SIZE(smsc_phy_driver));
248}
249
250static void __exit smsc_exit(void)
251{
252 return phy_drivers_unregister(smsc_phy_driver,
253 ARRAY_SIZE(smsc_phy_driver));
254}
255
256MODULE_DESCRIPTION("SMSC PHY driver");
257MODULE_AUTHOR("Herbert Valerio Riedel");
258MODULE_LICENSE("GPL");
259
260module_init(smsc_init);
261module_exit(smsc_exit);
262
263static struct mdio_device_id __maybe_unused smsc_tbl[] = {
264 { 0x0007c0a0, 0xfffffff0 },
265 { 0x0007c0b0, 0xfffffff0 },
266 { 0x0007c0c0, 0xfffffff0 },
267 { 0x0007c0d0, 0xfffffff0 },
268 { 0x0007c0f0, 0xfffffff0 },
269 { }
270};
271
272MODULE_DEVICE_TABLE(mdio, smsc_tbl);