Commit | Line | Data |
---|---|---|
4a11b59d AV |
1 | /* |
2 | * Universal power supply monitor class | |
3 | * | |
4 | * Copyright © 2007 Anton Vorontsov <cbou@mail.ru> | |
5 | * Copyright © 2004 Szabolcs Gyurko | |
6 | * Copyright © 2003 Ian Molton <spyro@f2s.com> | |
7 | * | |
8 | * Modified: 2004, Oct Szabolcs Gyurko | |
9 | * | |
10 | * You may use this code as per GPL version 2 | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/types.h> | |
15 | #include <linux/init.h> | |
5f487cd3 | 16 | #include <linux/slab.h> |
4a11b59d AV |
17 | #include <linux/device.h> |
18 | #include <linux/err.h> | |
19 | #include <linux/power_supply.h> | |
3be330bf | 20 | #include <linux/thermal.h> |
4a11b59d AV |
21 | #include "power_supply.h" |
22 | ||
ff3417e7 | 23 | /* exported for the APM Power driver, APM emulation */ |
4a11b59d | 24 | struct class *power_supply_class; |
ff3417e7 | 25 | EXPORT_SYMBOL_GPL(power_supply_class); |
4a11b59d | 26 | |
5f487cd3 AV |
27 | static struct device_type power_supply_dev_type; |
28 | ||
5e0848c6 RK |
29 | static bool __power_supply_is_supplied_by(struct power_supply *supplier, |
30 | struct power_supply *supply) | |
31 | { | |
32 | int i; | |
33 | ||
34 | if (!supply->supplied_from && !supplier->supplied_to) | |
35 | return false; | |
36 | ||
37 | /* Support both supplied_to and supplied_from modes */ | |
38 | if (supply->supplied_from) { | |
39 | if (!supplier->name) | |
40 | return false; | |
41 | for (i = 0; i < supply->num_supplies; i++) | |
42 | if (!strcmp(supplier->name, supply->supplied_from[i])) | |
43 | return true; | |
44 | } else { | |
45 | if (!supply->name) | |
46 | return false; | |
47 | for (i = 0; i < supplier->num_supplicants; i++) | |
48 | if (!strcmp(supplier->supplied_to[i], supply->name)) | |
49 | return true; | |
50 | } | |
51 | ||
52 | return false; | |
53 | } | |
54 | ||
443cad92 DY |
55 | static int __power_supply_changed_work(struct device *dev, void *data) |
56 | { | |
57 | struct power_supply *psy = (struct power_supply *)data; | |
58 | struct power_supply *pst = dev_get_drvdata(dev); | |
443cad92 | 59 | |
5e0848c6 RK |
60 | if (__power_supply_is_supplied_by(psy, pst)) { |
61 | if (pst->external_power_changed) | |
62 | pst->external_power_changed(pst); | |
63 | } | |
64 | ||
443cad92 DY |
65 | return 0; |
66 | } | |
67 | ||
4a11b59d AV |
68 | static void power_supply_changed_work(struct work_struct *work) |
69 | { | |
6fa3eb70 | 70 | unsigned long flags; |
4a11b59d AV |
71 | struct power_supply *psy = container_of(work, struct power_supply, |
72 | changed_work); | |
4a11b59d | 73 | |
0cddc0a9 | 74 | dev_dbg(psy->dev, "%s\n", __func__); |
4a11b59d | 75 | |
6fa3eb70 S |
76 | spin_lock_irqsave(&psy->changed_lock, flags); |
77 | if (psy->changed) { | |
78 | psy->changed = false; | |
79 | spin_unlock_irqrestore(&psy->changed_lock, flags); | |
4a11b59d | 80 | |
6fa3eb70 S |
81 | class_for_each_device(power_supply_class, NULL, psy, |
82 | __power_supply_changed_work); | |
4a11b59d | 83 | |
6fa3eb70 S |
84 | power_supply_update_leds(psy); |
85 | ||
86 | kobject_uevent(&psy->dev->kobj, KOBJ_CHANGE); | |
87 | spin_lock_irqsave(&psy->changed_lock, flags); | |
88 | } | |
89 | if (!psy->changed) | |
90 | pm_relax(psy->dev); | |
91 | spin_unlock_irqrestore(&psy->changed_lock, flags); | |
4a11b59d AV |
92 | } |
93 | ||
94 | void power_supply_changed(struct power_supply *psy) | |
95 | { | |
6fa3eb70 S |
96 | unsigned long flags; |
97 | ||
0cddc0a9 | 98 | dev_dbg(psy->dev, "%s\n", __func__); |
4a11b59d | 99 | |
6fa3eb70 S |
100 | spin_lock_irqsave(&psy->changed_lock, flags); |
101 | psy->changed = true; | |
102 | pm_stay_awake(psy->dev); | |
103 | spin_unlock_irqrestore(&psy->changed_lock, flags); | |
4a11b59d | 104 | schedule_work(&psy->changed_work); |
4a11b59d | 105 | } |
ff3417e7 | 106 | EXPORT_SYMBOL_GPL(power_supply_changed); |
4a11b59d | 107 | |
f6e0b081 RK |
108 | #ifdef CONFIG_OF |
109 | #include <linux/of.h> | |
110 | ||
111 | static int __power_supply_populate_supplied_from(struct device *dev, | |
112 | void *data) | |
113 | { | |
114 | struct power_supply *psy = (struct power_supply *)data; | |
115 | struct power_supply *epsy = dev_get_drvdata(dev); | |
116 | struct device_node *np; | |
117 | int i = 0; | |
118 | ||
119 | do { | |
120 | np = of_parse_phandle(psy->of_node, "power-supplies", i++); | |
121 | if (!np) | |
122 | continue; | |
123 | ||
124 | if (np == epsy->of_node) { | |
125 | dev_info(psy->dev, "%s: Found supply : %s\n", | |
126 | psy->name, epsy->name); | |
127 | psy->supplied_from[i-1] = (char *)epsy->name; | |
128 | psy->num_supplies++; | |
129 | break; | |
130 | } | |
131 | } while (np); | |
132 | ||
133 | return 0; | |
134 | } | |
135 | ||
136 | static int power_supply_populate_supplied_from(struct power_supply *psy) | |
137 | { | |
138 | int error; | |
139 | ||
140 | error = class_for_each_device(power_supply_class, NULL, psy, | |
141 | __power_supply_populate_supplied_from); | |
142 | ||
143 | dev_dbg(psy->dev, "%s %d\n", __func__, error); | |
144 | ||
145 | return error; | |
146 | } | |
147 | ||
148 | static int __power_supply_find_supply_from_node(struct device *dev, | |
149 | void *data) | |
150 | { | |
151 | struct device_node *np = (struct device_node *)data; | |
152 | struct power_supply *epsy = dev_get_drvdata(dev); | |
153 | ||
154 | /* return error breaks out of class_for_each_device loop */ | |
155 | if (epsy->of_node == np) | |
156 | return -EINVAL; | |
157 | ||
158 | return 0; | |
159 | } | |
160 | ||
161 | static int power_supply_find_supply_from_node(struct device_node *supply_node) | |
162 | { | |
163 | int error; | |
164 | struct device *dev; | |
165 | struct class_dev_iter iter; | |
166 | ||
167 | /* | |
168 | * Use iterator to see if any other device is registered. | |
169 | * This is required since class_for_each_device returns 0 | |
170 | * if there are no devices registered. | |
171 | */ | |
172 | class_dev_iter_init(&iter, power_supply_class, NULL, NULL); | |
173 | dev = class_dev_iter_next(&iter); | |
174 | ||
175 | if (!dev) | |
176 | return -EPROBE_DEFER; | |
177 | ||
178 | /* | |
179 | * We have to treat the return value as inverted, because if | |
180 | * we return error on not found, then it won't continue looking. | |
181 | * So we trick it by returning error on success to stop looking | |
182 | * once the matching device is found. | |
183 | */ | |
184 | error = class_for_each_device(power_supply_class, NULL, supply_node, | |
185 | __power_supply_find_supply_from_node); | |
186 | ||
187 | return error ? 0 : -EPROBE_DEFER; | |
188 | } | |
189 | ||
190 | static int power_supply_check_supplies(struct power_supply *psy) | |
191 | { | |
192 | struct device_node *np; | |
193 | int cnt = 0; | |
194 | ||
195 | /* If there is already a list honor it */ | |
196 | if (psy->supplied_from && psy->num_supplies > 0) | |
197 | return 0; | |
198 | ||
199 | /* No device node found, nothing to do */ | |
200 | if (!psy->of_node) | |
201 | return 0; | |
202 | ||
203 | do { | |
204 | int ret; | |
205 | ||
206 | np = of_parse_phandle(psy->of_node, "power-supplies", cnt++); | |
207 | if (!np) | |
208 | continue; | |
209 | ||
210 | ret = power_supply_find_supply_from_node(np); | |
211 | if (ret) { | |
212 | dev_dbg(psy->dev, "Failed to find supply, defer!\n"); | |
213 | return -EPROBE_DEFER; | |
214 | } | |
215 | } while (np); | |
216 | ||
217 | /* All supplies found, allocate char ** array for filling */ | |
218 | psy->supplied_from = devm_kzalloc(psy->dev, sizeof(psy->supplied_from), | |
219 | GFP_KERNEL); | |
220 | if (!psy->supplied_from) { | |
221 | dev_err(psy->dev, "Couldn't allocate memory for supply list\n"); | |
222 | return -ENOMEM; | |
223 | } | |
224 | ||
225 | *psy->supplied_from = devm_kzalloc(psy->dev, sizeof(char *) * cnt, | |
226 | GFP_KERNEL); | |
227 | if (!*psy->supplied_from) { | |
228 | dev_err(psy->dev, "Couldn't allocate memory for supply list\n"); | |
229 | return -ENOMEM; | |
230 | } | |
231 | ||
232 | return power_supply_populate_supplied_from(psy); | |
233 | } | |
234 | #else | |
235 | static inline int power_supply_check_supplies(struct power_supply *psy) | |
236 | { | |
237 | return 0; | |
238 | } | |
239 | #endif | |
240 | ||
443cad92 | 241 | static int __power_supply_am_i_supplied(struct device *dev, void *data) |
4a11b59d AV |
242 | { |
243 | union power_supply_propval ret = {0,}; | |
443cad92 DY |
244 | struct power_supply *psy = (struct power_supply *)data; |
245 | struct power_supply *epsy = dev_get_drvdata(dev); | |
443cad92 | 246 | |
5e0848c6 RK |
247 | if (__power_supply_is_supplied_by(epsy, psy)) |
248 | if (!epsy->get_property(epsy, POWER_SUPPLY_PROP_ONLINE, &ret)) { | |
443cad92 DY |
249 | if (ret.intval) |
250 | return ret.intval; | |
4a11b59d | 251 | } |
5e0848c6 | 252 | |
443cad92 DY |
253 | return 0; |
254 | } | |
255 | ||
256 | int power_supply_am_i_supplied(struct power_supply *psy) | |
257 | { | |
258 | int error; | |
259 | ||
93562b53 | 260 | error = class_for_each_device(power_supply_class, NULL, psy, |
443cad92 | 261 | __power_supply_am_i_supplied); |
4a11b59d | 262 | |
0cddc0a9 | 263 | dev_dbg(psy->dev, "%s %d\n", __func__, error); |
4a11b59d | 264 | |
443cad92 | 265 | return error; |
4a11b59d | 266 | } |
ff3417e7 | 267 | EXPORT_SYMBOL_GPL(power_supply_am_i_supplied); |
4a11b59d | 268 | |
942ed161 MG |
269 | static int __power_supply_is_system_supplied(struct device *dev, void *data) |
270 | { | |
271 | union power_supply_propval ret = {0,}; | |
272 | struct power_supply *psy = dev_get_drvdata(dev); | |
2530daa1 | 273 | unsigned int *count = data; |
942ed161 | 274 | |
2530daa1 | 275 | (*count)++; |
942ed161 MG |
276 | if (psy->type != POWER_SUPPLY_TYPE_BATTERY) { |
277 | if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &ret)) | |
278 | return 0; | |
279 | if (ret.intval) | |
280 | return ret.intval; | |
281 | } | |
282 | return 0; | |
283 | } | |
284 | ||
285 | int power_supply_is_system_supplied(void) | |
286 | { | |
287 | int error; | |
2530daa1 | 288 | unsigned int count = 0; |
942ed161 | 289 | |
2530daa1 | 290 | error = class_for_each_device(power_supply_class, NULL, &count, |
942ed161 MG |
291 | __power_supply_is_system_supplied); |
292 | ||
2530daa1 JD |
293 | /* |
294 | * If no power class device was found at all, most probably we are | |
295 | * running on a desktop system, so assume we are on mains power. | |
296 | */ | |
297 | if (count == 0) | |
298 | return 1; | |
299 | ||
942ed161 MG |
300 | return error; |
301 | } | |
ff3417e7 | 302 | EXPORT_SYMBOL_GPL(power_supply_is_system_supplied); |
942ed161 | 303 | |
e5f5ccb6 DM |
304 | int power_supply_set_battery_charged(struct power_supply *psy) |
305 | { | |
306 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY && psy->set_charged) { | |
307 | psy->set_charged(psy); | |
308 | return 0; | |
309 | } | |
310 | ||
311 | return -EINVAL; | |
312 | } | |
313 | EXPORT_SYMBOL_GPL(power_supply_set_battery_charged); | |
314 | ||
9f3b795a | 315 | static int power_supply_match_device_by_name(struct device *dev, const void *data) |
e5f5ccb6 DM |
316 | { |
317 | const char *name = data; | |
318 | struct power_supply *psy = dev_get_drvdata(dev); | |
319 | ||
320 | return strcmp(psy->name, name) == 0; | |
321 | } | |
322 | ||
9f3b795a | 323 | struct power_supply *power_supply_get_by_name(const char *name) |
e5f5ccb6 DM |
324 | { |
325 | struct device *dev = class_find_device(power_supply_class, NULL, name, | |
326 | power_supply_match_device_by_name); | |
327 | ||
328 | return dev ? dev_get_drvdata(dev) : NULL; | |
329 | } | |
330 | EXPORT_SYMBOL_GPL(power_supply_get_by_name); | |
331 | ||
83516651 JF |
332 | int power_supply_powers(struct power_supply *psy, struct device *dev) |
333 | { | |
93278d15 | 334 | return sysfs_create_link(&psy->dev->kobj, &dev->kobj, "powers"); |
83516651 JF |
335 | } |
336 | EXPORT_SYMBOL_GPL(power_supply_powers); | |
337 | ||
5f487cd3 AV |
338 | static void power_supply_dev_release(struct device *dev) |
339 | { | |
340 | pr_debug("device: '%s': %s\n", dev_name(dev), __func__); | |
341 | kfree(dev); | |
342 | } | |
343 | ||
3be330bf JT |
344 | #ifdef CONFIG_THERMAL |
345 | static int power_supply_read_temp(struct thermal_zone_device *tzd, | |
346 | unsigned long *temp) | |
347 | { | |
348 | struct power_supply *psy; | |
349 | union power_supply_propval val; | |
350 | int ret; | |
351 | ||
352 | WARN_ON(tzd == NULL); | |
353 | psy = tzd->devdata; | |
354 | ret = psy->get_property(psy, POWER_SUPPLY_PROP_TEMP, &val); | |
355 | ||
356 | /* Convert tenths of degree Celsius to milli degree Celsius. */ | |
357 | if (!ret) | |
358 | *temp = val.intval * 100; | |
359 | ||
360 | return ret; | |
361 | } | |
362 | ||
363 | static struct thermal_zone_device_ops psy_tzd_ops = { | |
364 | .get_temp = power_supply_read_temp, | |
365 | }; | |
366 | ||
367 | static int psy_register_thermal(struct power_supply *psy) | |
368 | { | |
369 | int i; | |
370 | ||
371 | /* Register battery zone device psy reports temperature */ | |
372 | for (i = 0; i < psy->num_properties; i++) { | |
373 | if (psy->properties[i] == POWER_SUPPLY_PROP_TEMP) { | |
e6db06a5 | 374 | psy->tzd = thermal_zone_device_register(psy->name, 0, 0, |
50125a9b | 375 | psy, &psy_tzd_ops, NULL, 0, 0); |
3be330bf JT |
376 | if (IS_ERR(psy->tzd)) |
377 | return PTR_ERR(psy->tzd); | |
378 | break; | |
379 | } | |
380 | } | |
381 | return 0; | |
382 | } | |
383 | ||
384 | static void psy_unregister_thermal(struct power_supply *psy) | |
385 | { | |
386 | if (IS_ERR_OR_NULL(psy->tzd)) | |
387 | return; | |
388 | thermal_zone_device_unregister(psy->tzd); | |
389 | } | |
952aeeb3 RP |
390 | |
391 | /* thermal cooling device callbacks */ | |
392 | static int ps_get_max_charge_cntl_limit(struct thermal_cooling_device *tcd, | |
393 | unsigned long *state) | |
394 | { | |
395 | struct power_supply *psy; | |
396 | union power_supply_propval val; | |
397 | int ret; | |
398 | ||
399 | psy = tcd->devdata; | |
400 | ret = psy->get_property(psy, | |
401 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, &val); | |
402 | if (!ret) | |
403 | *state = val.intval; | |
404 | ||
405 | return ret; | |
406 | } | |
407 | ||
408 | static int ps_get_cur_chrage_cntl_limit(struct thermal_cooling_device *tcd, | |
409 | unsigned long *state) | |
410 | { | |
411 | struct power_supply *psy; | |
412 | union power_supply_propval val; | |
413 | int ret; | |
414 | ||
415 | psy = tcd->devdata; | |
416 | ret = psy->get_property(psy, | |
417 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val); | |
418 | if (!ret) | |
419 | *state = val.intval; | |
420 | ||
421 | return ret; | |
422 | } | |
423 | ||
424 | static int ps_set_cur_charge_cntl_limit(struct thermal_cooling_device *tcd, | |
425 | unsigned long state) | |
426 | { | |
427 | struct power_supply *psy; | |
428 | union power_supply_propval val; | |
429 | int ret; | |
430 | ||
431 | psy = tcd->devdata; | |
432 | val.intval = state; | |
433 | ret = psy->set_property(psy, | |
434 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val); | |
435 | ||
436 | return ret; | |
437 | } | |
438 | ||
439 | static struct thermal_cooling_device_ops psy_tcd_ops = { | |
440 | .get_max_state = ps_get_max_charge_cntl_limit, | |
441 | .get_cur_state = ps_get_cur_chrage_cntl_limit, | |
442 | .set_cur_state = ps_set_cur_charge_cntl_limit, | |
443 | }; | |
444 | ||
445 | static int psy_register_cooler(struct power_supply *psy) | |
446 | { | |
447 | int i; | |
448 | ||
449 | /* Register for cooling device if psy can control charging */ | |
450 | for (i = 0; i < psy->num_properties; i++) { | |
451 | if (psy->properties[i] == | |
452 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT) { | |
453 | psy->tcd = thermal_cooling_device_register( | |
454 | (char *)psy->name, | |
455 | psy, &psy_tcd_ops); | |
456 | if (IS_ERR(psy->tcd)) | |
457 | return PTR_ERR(psy->tcd); | |
458 | break; | |
459 | } | |
460 | } | |
461 | return 0; | |
462 | } | |
463 | ||
464 | static void psy_unregister_cooler(struct power_supply *psy) | |
465 | { | |
466 | if (IS_ERR_OR_NULL(psy->tcd)) | |
467 | return; | |
468 | thermal_cooling_device_unregister(psy->tcd); | |
469 | } | |
3be330bf JT |
470 | #else |
471 | static int psy_register_thermal(struct power_supply *psy) | |
472 | { | |
473 | return 0; | |
474 | } | |
475 | ||
476 | static void psy_unregister_thermal(struct power_supply *psy) | |
477 | { | |
478 | } | |
952aeeb3 RP |
479 | |
480 | static int psy_register_cooler(struct power_supply *psy) | |
481 | { | |
482 | return 0; | |
483 | } | |
484 | ||
485 | static void psy_unregister_cooler(struct power_supply *psy) | |
486 | { | |
487 | } | |
3be330bf JT |
488 | #endif |
489 | ||
4a11b59d AV |
490 | int power_supply_register(struct device *parent, struct power_supply *psy) |
491 | { | |
5f487cd3 AV |
492 | struct device *dev; |
493 | int rc; | |
4a11b59d | 494 | |
5f487cd3 AV |
495 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
496 | if (!dev) | |
497 | return -ENOMEM; | |
4a11b59d | 498 | |
5f487cd3 | 499 | device_initialize(dev); |
4a11b59d | 500 | |
5f487cd3 AV |
501 | dev->class = power_supply_class; |
502 | dev->type = &power_supply_dev_type; | |
503 | dev->parent = parent; | |
504 | dev->release = power_supply_dev_release; | |
505 | dev_set_drvdata(dev, psy); | |
506 | psy->dev = dev; | |
507 | ||
97774672 LPC |
508 | INIT_WORK(&psy->changed_work, power_supply_changed_work); |
509 | ||
f6e0b081 RK |
510 | rc = power_supply_check_supplies(psy); |
511 | if (rc) { | |
512 | dev_info(dev, "Not all required supplies found, defer probe\n"); | |
513 | goto check_supplies_failed; | |
514 | } | |
515 | ||
5f487cd3 AV |
516 | rc = kobject_set_name(&dev->kobj, "%s", psy->name); |
517 | if (rc) | |
518 | goto kobject_set_name_failed; | |
519 | ||
520 | rc = device_add(dev); | |
4a11b59d | 521 | if (rc) |
5f487cd3 AV |
522 | goto device_add_failed; |
523 | ||
6fa3eb70 S |
524 | spin_lock_init(&psy->changed_lock); |
525 | rc = device_init_wakeup(dev, true); | |
526 | if (rc) | |
527 | goto wakeup_init_failed; | |
528 | ||
3be330bf JT |
529 | rc = psy_register_thermal(psy); |
530 | if (rc) | |
531 | goto register_thermal_failed; | |
532 | ||
952aeeb3 RP |
533 | rc = psy_register_cooler(psy); |
534 | if (rc) | |
535 | goto register_cooler_failed; | |
536 | ||
4a11b59d AV |
537 | rc = power_supply_create_triggers(psy); |
538 | if (rc) | |
539 | goto create_triggers_failed; | |
540 | ||
541 | power_supply_changed(psy); | |
542 | ||
543 | goto success; | |
544 | ||
545 | create_triggers_failed: | |
952aeeb3 RP |
546 | psy_unregister_cooler(psy); |
547 | register_cooler_failed: | |
3be330bf JT |
548 | psy_unregister_thermal(psy); |
549 | register_thermal_failed: | |
6fa3eb70 | 550 | wakeup_init_failed: |
3a2dbd61 | 551 | device_del(dev); |
5f487cd3 AV |
552 | kobject_set_name_failed: |
553 | device_add_failed: | |
f6e0b081 | 554 | check_supplies_failed: |
3a2dbd61 | 555 | put_device(dev); |
4a11b59d AV |
556 | success: |
557 | return rc; | |
558 | } | |
ff3417e7 | 559 | EXPORT_SYMBOL_GPL(power_supply_register); |
4a11b59d AV |
560 | |
561 | void power_supply_unregister(struct power_supply *psy) | |
562 | { | |
bc51e7ff | 563 | cancel_work_sync(&psy->changed_work); |
83516651 | 564 | sysfs_remove_link(&psy->dev->kobj, "powers"); |
4a11b59d | 565 | power_supply_remove_triggers(psy); |
952aeeb3 | 566 | psy_unregister_cooler(psy); |
3be330bf | 567 | psy_unregister_thermal(psy); |
4a11b59d | 568 | device_unregister(psy->dev); |
4a11b59d | 569 | } |
ff3417e7 | 570 | EXPORT_SYMBOL_GPL(power_supply_unregister); |
4a11b59d AV |
571 | |
572 | static int __init power_supply_class_init(void) | |
573 | { | |
574 | power_supply_class = class_create(THIS_MODULE, "power_supply"); | |
575 | ||
576 | if (IS_ERR(power_supply_class)) | |
577 | return PTR_ERR(power_supply_class); | |
578 | ||
579 | power_supply_class->dev_uevent = power_supply_uevent; | |
5f487cd3 | 580 | power_supply_init_attrs(&power_supply_dev_type); |
4a11b59d AV |
581 | |
582 | return 0; | |
583 | } | |
584 | ||
585 | static void __exit power_supply_class_exit(void) | |
586 | { | |
587 | class_destroy(power_supply_class); | |
4a11b59d AV |
588 | } |
589 | ||
4a11b59d AV |
590 | subsys_initcall(power_supply_class_init); |
591 | module_exit(power_supply_class_exit); | |
592 | ||
593 | MODULE_DESCRIPTION("Universal power supply monitor class"); | |
594 | MODULE_AUTHOR("Ian Molton <spyro@f2s.com>, " | |
595 | "Szabolcs Gyurko, " | |
596 | "Anton Vorontsov <cbou@mail.ru>"); | |
597 | MODULE_LICENSE("GPL"); |