Commit | Line | Data |
---|---|---|
c9e055ac HVR |
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 | * | |
90b24cfb | 15 | * Support added for SMSC LAN8187 and LAN8700 by steve.glendinning@shawell.net |
4d9b1a02 | 16 | * |
c9e055ac HVR |
17 | */ |
18 | ||
c9e055ac HVR |
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> | |
43c6759e | 25 | #include <linux/smscphy.h> |
c9e055ac | 26 | |
48c41b99 | 27 | static int smsc_phy_config_intr(struct phy_device *phydev) |
c9e055ac HVR |
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 | ||
48c41b99 | 37 | static int smsc_phy_ack_interrupt(struct phy_device *phydev) |
c9e055ac HVR |
38 | { |
39 | int rc = phy_read (phydev, MII_LAN83C185_ISF); | |
40 | ||
41 | return rc < 0 ? rc : 0; | |
42 | } | |
43 | ||
48c41b99 | 44 | static int smsc_phy_config_init(struct phy_device *phydev) |
c9e055ac | 45 | { |
6ded7cd6 | 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); | |
698244ac GC |
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 | ||
48c41b99 | 80 | return smsc_phy_ack_interrupt (phydev); |
c9e055ac HVR |
81 | } |
82 | ||
4223dbff | 83 | static int lan911x_config_init(struct phy_device *phydev) |
b629820d | 84 | { |
b629820d MV |
85 | return smsc_phy_ack_interrupt(phydev); |
86 | } | |
87 | ||
4223dbff PT |
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 | */ | |
99 | static int lan87xx_read_status(struct phy_device *phydev) | |
698244ac | 100 | { |
4223dbff PT |
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; | |
698244ac | 129 | } |
c9e055ac | 130 | |
d5bf9071 CH |
131 | static struct phy_driver smsc_phy_driver[] = { |
132 | { | |
c9e055ac HVR |
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, | |
48c41b99 | 144 | .config_init = smsc_phy_config_init, |
c9e055ac HVR |
145 | |
146 | /* IRQ related */ | |
48c41b99 SG |
147 | .ack_interrupt = smsc_phy_ack_interrupt, |
148 | .config_intr = smsc_phy_config_intr, | |
c9e055ac | 149 | |
c64d2a9a SG |
150 | .suspend = genphy_suspend, |
151 | .resume = genphy_resume, | |
152 | ||
c9e055ac | 153 | .driver = { .owner = THIS_MODULE, } |
d5bf9071 | 154 | }, { |
4d9b1a02 SG |
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 | ||
c64d2a9a SG |
172 | .suspend = genphy_suspend, |
173 | .resume = genphy_resume, | |
174 | ||
4d9b1a02 | 175 | .driver = { .owner = THIS_MODULE, } |
d5bf9071 | 176 | }, { |
4d9b1a02 SG |
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 | ||
c64d2a9a SG |
194 | .suspend = genphy_suspend, |
195 | .resume = genphy_resume, | |
196 | ||
4d9b1a02 | 197 | .driver = { .owner = THIS_MODULE, } |
d5bf9071 | 198 | }, { |
fd9abb3d SG |
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, | |
698244ac | 210 | .config_init = lan911x_config_init, |
fd9abb3d SG |
211 | |
212 | /* IRQ related */ | |
213 | .ack_interrupt = smsc_phy_ack_interrupt, | |
214 | .config_intr = smsc_phy_config_intr, | |
215 | ||
c64d2a9a SG |
216 | .suspend = genphy_suspend, |
217 | .resume = genphy_resume, | |
218 | ||
fd9abb3d | 219 | .driver = { .owner = THIS_MODULE, } |
d5bf9071 | 220 | }, { |
e072b639 SG |
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, | |
4223dbff | 231 | .read_status = lan87xx_read_status, |
4257d583 | 232 | .config_init = smsc_phy_config_init, |
e072b639 SG |
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, } | |
d5bf9071 | 242 | } }; |
e072b639 | 243 | |
c9e055ac HVR |
244 | static int __init smsc_init(void) |
245 | { | |
d5bf9071 CH |
246 | return phy_drivers_register(smsc_phy_driver, |
247 | ARRAY_SIZE(smsc_phy_driver)); | |
c9e055ac HVR |
248 | } |
249 | ||
250 | static void __exit smsc_exit(void) | |
251 | { | |
d5bf9071 CH |
252 | return phy_drivers_unregister(smsc_phy_driver, |
253 | ARRAY_SIZE(smsc_phy_driver)); | |
c9e055ac HVR |
254 | } |
255 | ||
256 | MODULE_DESCRIPTION("SMSC PHY driver"); | |
257 | MODULE_AUTHOR("Herbert Valerio Riedel"); | |
258 | MODULE_LICENSE("GPL"); | |
259 | ||
260 | module_init(smsc_init); | |
261 | module_exit(smsc_exit); | |
4e4f10f6 | 262 | |
cf93c945 | 263 | static struct mdio_device_id __maybe_unused smsc_tbl[] = { |
4e4f10f6 DW |
264 | { 0x0007c0a0, 0xfffffff0 }, |
265 | { 0x0007c0b0, 0xfffffff0 }, | |
266 | { 0x0007c0c0, 0xfffffff0 }, | |
267 | { 0x0007c0d0, 0xfffffff0 }, | |
268 | { 0x0007c0f0, 0xfffffff0 }, | |
269 | { } | |
270 | }; | |
271 | ||
272 | MODULE_DEVICE_TABLE(mdio, smsc_tbl); |