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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) |
21009686 GGM |
45 | { |
46 | int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS); | |
47 | ||
48 | if (rc < 0) | |
49 | return rc; | |
50 | ||
51 | /* Enable energy detect mode for this SMSC Transceivers */ | |
52 | rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, | |
53 | rc | MII_LAN83C185_EDPWRDOWN); | |
54 | if (rc < 0) | |
55 | return rc; | |
56 | ||
57 | return smsc_phy_ack_interrupt(phydev); | |
58 | } | |
59 | ||
60 | static int smsc_phy_reset(struct phy_device *phydev) | |
c9e055ac | 61 | { |
6ded7cd6 | 62 | int rc = phy_read(phydev, MII_LAN83C185_SPECIAL_MODES); |
63 | if (rc < 0) | |
64 | return rc; | |
65 | ||
66 | /* If the SMSC PHY is in power down mode, then set it | |
67 | * in all capable mode before using it. | |
68 | */ | |
69 | if ((rc & MII_LAN83C185_MODE_MASK) == MII_LAN83C185_MODE_POWERDOWN) { | |
70 | int timeout = 50000; | |
71 | ||
72 | /* set "all capable" mode and reset the phy */ | |
73 | rc |= MII_LAN83C185_MODE_ALL; | |
74 | phy_write(phydev, MII_LAN83C185_SPECIAL_MODES, rc); | |
75 | phy_write(phydev, MII_BMCR, BMCR_RESET); | |
76 | ||
77 | /* wait end of reset (max 500 ms) */ | |
78 | do { | |
79 | udelay(10); | |
80 | if (timeout-- == 0) | |
81 | return -1; | |
82 | rc = phy_read(phydev, MII_BMCR); | |
83 | } while (rc & BMCR_RESET); | |
84 | } | |
21009686 | 85 | return 0; |
c9e055ac HVR |
86 | } |
87 | ||
4223dbff | 88 | static int lan911x_config_init(struct phy_device *phydev) |
b629820d | 89 | { |
b629820d MV |
90 | return smsc_phy_ack_interrupt(phydev); |
91 | } | |
92 | ||
4223dbff PT |
93 | /* |
94 | * The LAN8710/LAN8720 requires a minimum of 2 link pulses within 64ms of each | |
95 | * other in order to set the ENERGYON bit and exit EDPD mode. If a link partner | |
96 | * does send the pulses within this interval, the PHY will remained powered | |
97 | * down. | |
98 | * | |
99 | * This workaround will manually toggle the PHY on/off upon calls to read_status | |
100 | * in order to generate link test pulses if the link is down. If a link partner | |
101 | * is present, it will respond to the pulses, which will cause the ENERGYON bit | |
102 | * to be set and will cause the EDPD mode to be exited. | |
103 | */ | |
104 | static int lan87xx_read_status(struct phy_device *phydev) | |
698244ac | 105 | { |
4223dbff PT |
106 | int err = genphy_read_status(phydev); |
107 | ||
108 | if (!phydev->link) { | |
109 | /* Disable EDPD to wake up PHY */ | |
110 | int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS); | |
111 | if (rc < 0) | |
112 | return rc; | |
113 | ||
114 | rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, | |
115 | rc & ~MII_LAN83C185_EDPWRDOWN); | |
116 | if (rc < 0) | |
117 | return rc; | |
118 | ||
119 | /* Sleep 64 ms to allow ~5 link test pulses to be sent */ | |
120 | msleep(64); | |
121 | ||
122 | /* Re-enable EDPD */ | |
123 | rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS); | |
124 | if (rc < 0) | |
125 | return rc; | |
126 | ||
127 | rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, | |
128 | rc | MII_LAN83C185_EDPWRDOWN); | |
129 | if (rc < 0) | |
130 | return rc; | |
131 | } | |
132 | ||
133 | return err; | |
698244ac | 134 | } |
c9e055ac | 135 | |
d5bf9071 CH |
136 | static struct phy_driver smsc_phy_driver[] = { |
137 | { | |
c9e055ac HVR |
138 | .phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */ |
139 | .phy_id_mask = 0xfffffff0, | |
140 | .name = "SMSC LAN83C185", | |
141 | ||
142 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | |
143 | | SUPPORTED_Asym_Pause), | |
144 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, | |
145 | ||
146 | /* basic functions */ | |
147 | .config_aneg = genphy_config_aneg, | |
148 | .read_status = genphy_read_status, | |
48c41b99 | 149 | .config_init = smsc_phy_config_init, |
21009686 | 150 | .soft_reset = smsc_phy_reset, |
c9e055ac HVR |
151 | |
152 | /* IRQ related */ | |
48c41b99 SG |
153 | .ack_interrupt = smsc_phy_ack_interrupt, |
154 | .config_intr = smsc_phy_config_intr, | |
c9e055ac | 155 | |
c64d2a9a SG |
156 | .suspend = genphy_suspend, |
157 | .resume = genphy_resume, | |
158 | ||
c9e055ac | 159 | .driver = { .owner = THIS_MODULE, } |
d5bf9071 | 160 | }, { |
4d9b1a02 SG |
161 | .phy_id = 0x0007c0b0, /* OUI=0x00800f, Model#=0x0b */ |
162 | .phy_id_mask = 0xfffffff0, | |
163 | .name = "SMSC LAN8187", | |
164 | ||
165 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | |
166 | | SUPPORTED_Asym_Pause), | |
167 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, | |
168 | ||
169 | /* basic functions */ | |
170 | .config_aneg = genphy_config_aneg, | |
171 | .read_status = genphy_read_status, | |
172 | .config_init = smsc_phy_config_init, | |
21009686 | 173 | .soft_reset = smsc_phy_reset, |
4d9b1a02 SG |
174 | |
175 | /* IRQ related */ | |
176 | .ack_interrupt = smsc_phy_ack_interrupt, | |
177 | .config_intr = smsc_phy_config_intr, | |
178 | ||
c64d2a9a SG |
179 | .suspend = genphy_suspend, |
180 | .resume = genphy_resume, | |
181 | ||
4d9b1a02 | 182 | .driver = { .owner = THIS_MODULE, } |
d5bf9071 | 183 | }, { |
4d9b1a02 SG |
184 | .phy_id = 0x0007c0c0, /* OUI=0x00800f, Model#=0x0c */ |
185 | .phy_id_mask = 0xfffffff0, | |
186 | .name = "SMSC LAN8700", | |
187 | ||
188 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | |
189 | | SUPPORTED_Asym_Pause), | |
190 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, | |
191 | ||
192 | /* basic functions */ | |
193 | .config_aneg = genphy_config_aneg, | |
194 | .read_status = genphy_read_status, | |
195 | .config_init = smsc_phy_config_init, | |
21009686 | 196 | .soft_reset = smsc_phy_reset, |
4d9b1a02 SG |
197 | |
198 | /* IRQ related */ | |
199 | .ack_interrupt = smsc_phy_ack_interrupt, | |
200 | .config_intr = smsc_phy_config_intr, | |
201 | ||
c64d2a9a SG |
202 | .suspend = genphy_suspend, |
203 | .resume = genphy_resume, | |
204 | ||
4d9b1a02 | 205 | .driver = { .owner = THIS_MODULE, } |
d5bf9071 | 206 | }, { |
fd9abb3d SG |
207 | .phy_id = 0x0007c0d0, /* OUI=0x00800f, Model#=0x0d */ |
208 | .phy_id_mask = 0xfffffff0, | |
209 | .name = "SMSC LAN911x Internal PHY", | |
210 | ||
211 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | |
212 | | SUPPORTED_Asym_Pause), | |
213 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, | |
214 | ||
215 | /* basic functions */ | |
216 | .config_aneg = genphy_config_aneg, | |
217 | .read_status = genphy_read_status, | |
698244ac | 218 | .config_init = lan911x_config_init, |
fd9abb3d SG |
219 | |
220 | /* IRQ related */ | |
221 | .ack_interrupt = smsc_phy_ack_interrupt, | |
222 | .config_intr = smsc_phy_config_intr, | |
223 | ||
c64d2a9a SG |
224 | .suspend = genphy_suspend, |
225 | .resume = genphy_resume, | |
226 | ||
fd9abb3d | 227 | .driver = { .owner = THIS_MODULE, } |
d5bf9071 | 228 | }, { |
e072b639 SG |
229 | .phy_id = 0x0007c0f0, /* OUI=0x00800f, Model#=0x0f */ |
230 | .phy_id_mask = 0xfffffff0, | |
231 | .name = "SMSC LAN8710/LAN8720", | |
232 | ||
233 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | |
234 | | SUPPORTED_Asym_Pause), | |
235 | .flags = PHY_HAS_INTERRUPT | PHY_HAS_MAGICANEG, | |
236 | ||
237 | /* basic functions */ | |
238 | .config_aneg = genphy_config_aneg, | |
4223dbff | 239 | .read_status = lan87xx_read_status, |
4257d583 | 240 | .config_init = smsc_phy_config_init, |
21009686 | 241 | .soft_reset = smsc_phy_reset, |
e072b639 SG |
242 | |
243 | /* IRQ related */ | |
244 | .ack_interrupt = smsc_phy_ack_interrupt, | |
245 | .config_intr = smsc_phy_config_intr, | |
246 | ||
247 | .suspend = genphy_suspend, | |
248 | .resume = genphy_resume, | |
249 | ||
250 | .driver = { .owner = THIS_MODULE, } | |
d5bf9071 | 251 | } }; |
e072b639 | 252 | |
c9e055ac HVR |
253 | static int __init smsc_init(void) |
254 | { | |
d5bf9071 CH |
255 | return phy_drivers_register(smsc_phy_driver, |
256 | ARRAY_SIZE(smsc_phy_driver)); | |
c9e055ac HVR |
257 | } |
258 | ||
259 | static void __exit smsc_exit(void) | |
260 | { | |
2ebb1582 | 261 | phy_drivers_unregister(smsc_phy_driver, ARRAY_SIZE(smsc_phy_driver)); |
c9e055ac HVR |
262 | } |
263 | ||
264 | MODULE_DESCRIPTION("SMSC PHY driver"); | |
265 | MODULE_AUTHOR("Herbert Valerio Riedel"); | |
266 | MODULE_LICENSE("GPL"); | |
267 | ||
268 | module_init(smsc_init); | |
269 | module_exit(smsc_exit); | |
4e4f10f6 | 270 | |
cf93c945 | 271 | static struct mdio_device_id __maybe_unused smsc_tbl[] = { |
4e4f10f6 DW |
272 | { 0x0007c0a0, 0xfffffff0 }, |
273 | { 0x0007c0b0, 0xfffffff0 }, | |
274 | { 0x0007c0c0, 0xfffffff0 }, | |
275 | { 0x0007c0d0, 0xfffffff0 }, | |
276 | { 0x0007c0f0, 0xfffffff0 }, | |
277 | { } | |
278 | }; | |
279 | ||
280 | MODULE_DEVICE_TABLE(mdio, smsc_tbl); |