Commit | Line | Data |
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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 | 17 | #include <linux/device.h> |
d36240d2 | 18 | #include <linux/notifier.h> |
4a11b59d AV |
19 | #include <linux/err.h> |
20 | #include <linux/power_supply.h> | |
3be330bf | 21 | #include <linux/thermal.h> |
4a11b59d AV |
22 | #include "power_supply.h" |
23 | ||
ff3417e7 | 24 | /* exported for the APM Power driver, APM emulation */ |
4a11b59d | 25 | struct class *power_supply_class; |
ff3417e7 | 26 | EXPORT_SYMBOL_GPL(power_supply_class); |
4a11b59d | 27 | |
d36240d2 PR |
28 | ATOMIC_NOTIFIER_HEAD(power_supply_notifier); |
29 | EXPORT_SYMBOL_GPL(power_supply_notifier); | |
30 | ||
5f487cd3 AV |
31 | static struct device_type power_supply_dev_type; |
32 | ||
5e0848c6 RK |
33 | static bool __power_supply_is_supplied_by(struct power_supply *supplier, |
34 | struct power_supply *supply) | |
35 | { | |
36 | int i; | |
37 | ||
38 | if (!supply->supplied_from && !supplier->supplied_to) | |
39 | return false; | |
40 | ||
41 | /* Support both supplied_to and supplied_from modes */ | |
42 | if (supply->supplied_from) { | |
43 | if (!supplier->name) | |
44 | return false; | |
45 | for (i = 0; i < supply->num_supplies; i++) | |
46 | if (!strcmp(supplier->name, supply->supplied_from[i])) | |
47 | return true; | |
48 | } else { | |
49 | if (!supply->name) | |
50 | return false; | |
51 | for (i = 0; i < supplier->num_supplicants; i++) | |
52 | if (!strcmp(supplier->supplied_to[i], supply->name)) | |
53 | return true; | |
54 | } | |
55 | ||
56 | return false; | |
57 | } | |
58 | ||
443cad92 DY |
59 | static int __power_supply_changed_work(struct device *dev, void *data) |
60 | { | |
61 | struct power_supply *psy = (struct power_supply *)data; | |
62 | struct power_supply *pst = dev_get_drvdata(dev); | |
443cad92 | 63 | |
5e0848c6 RK |
64 | if (__power_supply_is_supplied_by(psy, pst)) { |
65 | if (pst->external_power_changed) | |
66 | pst->external_power_changed(pst); | |
67 | } | |
68 | ||
443cad92 DY |
69 | return 0; |
70 | } | |
71 | ||
4a11b59d AV |
72 | static void power_supply_changed_work(struct work_struct *work) |
73 | { | |
948dcf96 | 74 | unsigned long flags; |
4a11b59d AV |
75 | struct power_supply *psy = container_of(work, struct power_supply, |
76 | changed_work); | |
4a11b59d | 77 | |
0cddc0a9 | 78 | dev_dbg(psy->dev, "%s\n", __func__); |
4a11b59d | 79 | |
948dcf96 ZM |
80 | spin_lock_irqsave(&psy->changed_lock, flags); |
81 | if (psy->changed) { | |
82 | psy->changed = false; | |
83 | spin_unlock_irqrestore(&psy->changed_lock, flags); | |
84 | class_for_each_device(power_supply_class, NULL, psy, | |
85 | __power_supply_changed_work); | |
86 | power_supply_update_leds(psy); | |
d36240d2 PR |
87 | atomic_notifier_call_chain(&power_supply_notifier, |
88 | PSY_EVENT_PROP_CHANGED, psy); | |
948dcf96 ZM |
89 | kobject_uevent(&psy->dev->kobj, KOBJ_CHANGE); |
90 | spin_lock_irqsave(&psy->changed_lock, flags); | |
91 | } | |
92 | /* | |
93 | * Dependent power supplies (e.g. battery) may have changed state | |
94 | * as a result of this event, so poll again and hold the | |
95 | * wakeup_source until all events are processed. | |
96 | */ | |
97 | if (!psy->changed) | |
98 | pm_relax(psy->dev); | |
99 | spin_unlock_irqrestore(&psy->changed_lock, flags); | |
4a11b59d AV |
100 | } |
101 | ||
102 | void power_supply_changed(struct power_supply *psy) | |
103 | { | |
948dcf96 ZM |
104 | unsigned long flags; |
105 | ||
0cddc0a9 | 106 | dev_dbg(psy->dev, "%s\n", __func__); |
4a11b59d | 107 | |
948dcf96 ZM |
108 | spin_lock_irqsave(&psy->changed_lock, flags); |
109 | psy->changed = true; | |
110 | pm_stay_awake(psy->dev); | |
111 | spin_unlock_irqrestore(&psy->changed_lock, flags); | |
4a11b59d | 112 | schedule_work(&psy->changed_work); |
4a11b59d | 113 | } |
ff3417e7 | 114 | EXPORT_SYMBOL_GPL(power_supply_changed); |
4a11b59d | 115 | |
f6e0b081 RK |
116 | #ifdef CONFIG_OF |
117 | #include <linux/of.h> | |
118 | ||
119 | static int __power_supply_populate_supplied_from(struct device *dev, | |
120 | void *data) | |
121 | { | |
122 | struct power_supply *psy = (struct power_supply *)data; | |
123 | struct power_supply *epsy = dev_get_drvdata(dev); | |
124 | struct device_node *np; | |
125 | int i = 0; | |
126 | ||
127 | do { | |
128 | np = of_parse_phandle(psy->of_node, "power-supplies", i++); | |
129 | if (!np) | |
130 | continue; | |
131 | ||
132 | if (np == epsy->of_node) { | |
133 | dev_info(psy->dev, "%s: Found supply : %s\n", | |
134 | psy->name, epsy->name); | |
135 | psy->supplied_from[i-1] = (char *)epsy->name; | |
136 | psy->num_supplies++; | |
2054d6e9 | 137 | of_node_put(np); |
f6e0b081 RK |
138 | break; |
139 | } | |
2054d6e9 | 140 | of_node_put(np); |
f6e0b081 RK |
141 | } while (np); |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | static int power_supply_populate_supplied_from(struct power_supply *psy) | |
147 | { | |
148 | int error; | |
149 | ||
150 | error = class_for_each_device(power_supply_class, NULL, psy, | |
151 | __power_supply_populate_supplied_from); | |
152 | ||
153 | dev_dbg(psy->dev, "%s %d\n", __func__, error); | |
154 | ||
155 | return error; | |
156 | } | |
157 | ||
158 | static int __power_supply_find_supply_from_node(struct device *dev, | |
159 | void *data) | |
160 | { | |
161 | struct device_node *np = (struct device_node *)data; | |
162 | struct power_supply *epsy = dev_get_drvdata(dev); | |
163 | ||
164 | /* return error breaks out of class_for_each_device loop */ | |
165 | if (epsy->of_node == np) | |
166 | return -EINVAL; | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | static int power_supply_find_supply_from_node(struct device_node *supply_node) | |
172 | { | |
173 | int error; | |
174 | struct device *dev; | |
175 | struct class_dev_iter iter; | |
176 | ||
177 | /* | |
178 | * Use iterator to see if any other device is registered. | |
179 | * This is required since class_for_each_device returns 0 | |
180 | * if there are no devices registered. | |
181 | */ | |
182 | class_dev_iter_init(&iter, power_supply_class, NULL, NULL); | |
183 | dev = class_dev_iter_next(&iter); | |
184 | ||
185 | if (!dev) | |
186 | return -EPROBE_DEFER; | |
187 | ||
188 | /* | |
189 | * We have to treat the return value as inverted, because if | |
190 | * we return error on not found, then it won't continue looking. | |
191 | * So we trick it by returning error on success to stop looking | |
192 | * once the matching device is found. | |
193 | */ | |
194 | error = class_for_each_device(power_supply_class, NULL, supply_node, | |
195 | __power_supply_find_supply_from_node); | |
196 | ||
197 | return error ? 0 : -EPROBE_DEFER; | |
198 | } | |
199 | ||
200 | static int power_supply_check_supplies(struct power_supply *psy) | |
201 | { | |
202 | struct device_node *np; | |
203 | int cnt = 0; | |
204 | ||
205 | /* If there is already a list honor it */ | |
206 | if (psy->supplied_from && psy->num_supplies > 0) | |
207 | return 0; | |
208 | ||
209 | /* No device node found, nothing to do */ | |
210 | if (!psy->of_node) | |
211 | return 0; | |
212 | ||
213 | do { | |
214 | int ret; | |
215 | ||
216 | np = of_parse_phandle(psy->of_node, "power-supplies", cnt++); | |
217 | if (!np) | |
218 | continue; | |
219 | ||
220 | ret = power_supply_find_supply_from_node(np); | |
221 | if (ret) { | |
222 | dev_dbg(psy->dev, "Failed to find supply, defer!\n"); | |
2054d6e9 | 223 | of_node_put(np); |
f6e0b081 RK |
224 | return -EPROBE_DEFER; |
225 | } | |
2054d6e9 | 226 | of_node_put(np); |
f6e0b081 RK |
227 | } while (np); |
228 | ||
229 | /* All supplies found, allocate char ** array for filling */ | |
230 | psy->supplied_from = devm_kzalloc(psy->dev, sizeof(psy->supplied_from), | |
231 | GFP_KERNEL); | |
232 | if (!psy->supplied_from) { | |
233 | dev_err(psy->dev, "Couldn't allocate memory for supply list\n"); | |
234 | return -ENOMEM; | |
235 | } | |
236 | ||
8f5a37cb | 237 | *psy->supplied_from = devm_kzalloc(psy->dev, sizeof(char *) * (cnt - 1), |
f6e0b081 RK |
238 | GFP_KERNEL); |
239 | if (!*psy->supplied_from) { | |
240 | dev_err(psy->dev, "Couldn't allocate memory for supply list\n"); | |
241 | return -ENOMEM; | |
242 | } | |
243 | ||
244 | return power_supply_populate_supplied_from(psy); | |
245 | } | |
246 | #else | |
247 | static inline int power_supply_check_supplies(struct power_supply *psy) | |
248 | { | |
249 | return 0; | |
250 | } | |
251 | #endif | |
252 | ||
443cad92 | 253 | static int __power_supply_am_i_supplied(struct device *dev, void *data) |
4a11b59d AV |
254 | { |
255 | union power_supply_propval ret = {0,}; | |
443cad92 DY |
256 | struct power_supply *psy = (struct power_supply *)data; |
257 | struct power_supply *epsy = dev_get_drvdata(dev); | |
443cad92 | 258 | |
5e0848c6 RK |
259 | if (__power_supply_is_supplied_by(epsy, psy)) |
260 | if (!epsy->get_property(epsy, POWER_SUPPLY_PROP_ONLINE, &ret)) { | |
443cad92 DY |
261 | if (ret.intval) |
262 | return ret.intval; | |
4a11b59d | 263 | } |
5e0848c6 | 264 | |
443cad92 DY |
265 | return 0; |
266 | } | |
267 | ||
268 | int power_supply_am_i_supplied(struct power_supply *psy) | |
269 | { | |
270 | int error; | |
271 | ||
93562b53 | 272 | error = class_for_each_device(power_supply_class, NULL, psy, |
443cad92 | 273 | __power_supply_am_i_supplied); |
4a11b59d | 274 | |
0cddc0a9 | 275 | dev_dbg(psy->dev, "%s %d\n", __func__, error); |
4a11b59d | 276 | |
443cad92 | 277 | return error; |
4a11b59d | 278 | } |
ff3417e7 | 279 | EXPORT_SYMBOL_GPL(power_supply_am_i_supplied); |
4a11b59d | 280 | |
942ed161 MG |
281 | static int __power_supply_is_system_supplied(struct device *dev, void *data) |
282 | { | |
283 | union power_supply_propval ret = {0,}; | |
284 | struct power_supply *psy = dev_get_drvdata(dev); | |
2530daa1 | 285 | unsigned int *count = data; |
942ed161 | 286 | |
2530daa1 | 287 | (*count)++; |
942ed161 MG |
288 | if (psy->type != POWER_SUPPLY_TYPE_BATTERY) { |
289 | if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &ret)) | |
290 | return 0; | |
291 | if (ret.intval) | |
292 | return ret.intval; | |
293 | } | |
294 | return 0; | |
295 | } | |
296 | ||
297 | int power_supply_is_system_supplied(void) | |
298 | { | |
299 | int error; | |
2530daa1 | 300 | unsigned int count = 0; |
942ed161 | 301 | |
2530daa1 | 302 | error = class_for_each_device(power_supply_class, NULL, &count, |
942ed161 MG |
303 | __power_supply_is_system_supplied); |
304 | ||
2530daa1 JD |
305 | /* |
306 | * If no power class device was found at all, most probably we are | |
307 | * running on a desktop system, so assume we are on mains power. | |
308 | */ | |
309 | if (count == 0) | |
310 | return 1; | |
311 | ||
942ed161 MG |
312 | return error; |
313 | } | |
ff3417e7 | 314 | EXPORT_SYMBOL_GPL(power_supply_is_system_supplied); |
942ed161 | 315 | |
e5f5ccb6 DM |
316 | int power_supply_set_battery_charged(struct power_supply *psy) |
317 | { | |
318 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY && psy->set_charged) { | |
319 | psy->set_charged(psy); | |
320 | return 0; | |
321 | } | |
322 | ||
323 | return -EINVAL; | |
324 | } | |
325 | EXPORT_SYMBOL_GPL(power_supply_set_battery_charged); | |
326 | ||
9f3b795a | 327 | static int power_supply_match_device_by_name(struct device *dev, const void *data) |
e5f5ccb6 DM |
328 | { |
329 | const char *name = data; | |
330 | struct power_supply *psy = dev_get_drvdata(dev); | |
331 | ||
332 | return strcmp(psy->name, name) == 0; | |
333 | } | |
334 | ||
9f3b795a | 335 | struct power_supply *power_supply_get_by_name(const char *name) |
e5f5ccb6 DM |
336 | { |
337 | struct device *dev = class_find_device(power_supply_class, NULL, name, | |
338 | power_supply_match_device_by_name); | |
339 | ||
340 | return dev ? dev_get_drvdata(dev) : NULL; | |
341 | } | |
342 | EXPORT_SYMBOL_GPL(power_supply_get_by_name); | |
343 | ||
abce9770 SR |
344 | #ifdef CONFIG_OF |
345 | static int power_supply_match_device_node(struct device *dev, const void *data) | |
346 | { | |
347 | return dev->parent && dev->parent->of_node == data; | |
348 | } | |
349 | ||
350 | struct power_supply *power_supply_get_by_phandle(struct device_node *np, | |
351 | const char *property) | |
352 | { | |
353 | struct device_node *power_supply_np; | |
354 | struct device *dev; | |
355 | ||
356 | power_supply_np = of_parse_phandle(np, property, 0); | |
357 | if (!power_supply_np) | |
358 | return ERR_PTR(-ENODEV); | |
359 | ||
360 | dev = class_find_device(power_supply_class, NULL, power_supply_np, | |
361 | power_supply_match_device_node); | |
362 | ||
363 | of_node_put(power_supply_np); | |
364 | ||
365 | return dev ? dev_get_drvdata(dev) : NULL; | |
366 | } | |
367 | EXPORT_SYMBOL_GPL(power_supply_get_by_phandle); | |
368 | #endif /* CONFIG_OF */ | |
369 | ||
83516651 JF |
370 | int power_supply_powers(struct power_supply *psy, struct device *dev) |
371 | { | |
93278d15 | 372 | return sysfs_create_link(&psy->dev->kobj, &dev->kobj, "powers"); |
83516651 JF |
373 | } |
374 | EXPORT_SYMBOL_GPL(power_supply_powers); | |
375 | ||
5f487cd3 AV |
376 | static void power_supply_dev_release(struct device *dev) |
377 | { | |
378 | pr_debug("device: '%s': %s\n", dev_name(dev), __func__); | |
379 | kfree(dev); | |
380 | } | |
381 | ||
d36240d2 PR |
382 | int power_supply_reg_notifier(struct notifier_block *nb) |
383 | { | |
384 | return atomic_notifier_chain_register(&power_supply_notifier, nb); | |
385 | } | |
386 | EXPORT_SYMBOL_GPL(power_supply_reg_notifier); | |
387 | ||
388 | void power_supply_unreg_notifier(struct notifier_block *nb) | |
389 | { | |
390 | atomic_notifier_chain_unregister(&power_supply_notifier, nb); | |
391 | } | |
392 | EXPORT_SYMBOL_GPL(power_supply_unreg_notifier); | |
393 | ||
3be330bf JT |
394 | #ifdef CONFIG_THERMAL |
395 | static int power_supply_read_temp(struct thermal_zone_device *tzd, | |
396 | unsigned long *temp) | |
397 | { | |
398 | struct power_supply *psy; | |
399 | union power_supply_propval val; | |
400 | int ret; | |
401 | ||
402 | WARN_ON(tzd == NULL); | |
403 | psy = tzd->devdata; | |
404 | ret = psy->get_property(psy, POWER_SUPPLY_PROP_TEMP, &val); | |
405 | ||
406 | /* Convert tenths of degree Celsius to milli degree Celsius. */ | |
407 | if (!ret) | |
408 | *temp = val.intval * 100; | |
409 | ||
410 | return ret; | |
411 | } | |
412 | ||
413 | static struct thermal_zone_device_ops psy_tzd_ops = { | |
414 | .get_temp = power_supply_read_temp, | |
415 | }; | |
416 | ||
417 | static int psy_register_thermal(struct power_supply *psy) | |
418 | { | |
419 | int i; | |
420 | ||
421 | /* Register battery zone device psy reports temperature */ | |
422 | for (i = 0; i < psy->num_properties; i++) { | |
423 | if (psy->properties[i] == POWER_SUPPLY_PROP_TEMP) { | |
e6db06a5 | 424 | psy->tzd = thermal_zone_device_register(psy->name, 0, 0, |
50125a9b | 425 | psy, &psy_tzd_ops, NULL, 0, 0); |
3be330bf JT |
426 | if (IS_ERR(psy->tzd)) |
427 | return PTR_ERR(psy->tzd); | |
428 | break; | |
429 | } | |
430 | } | |
431 | return 0; | |
432 | } | |
433 | ||
434 | static void psy_unregister_thermal(struct power_supply *psy) | |
435 | { | |
436 | if (IS_ERR_OR_NULL(psy->tzd)) | |
437 | return; | |
438 | thermal_zone_device_unregister(psy->tzd); | |
439 | } | |
952aeeb3 RP |
440 | |
441 | /* thermal cooling device callbacks */ | |
442 | static int ps_get_max_charge_cntl_limit(struct thermal_cooling_device *tcd, | |
443 | unsigned long *state) | |
444 | { | |
445 | struct power_supply *psy; | |
446 | union power_supply_propval val; | |
447 | int ret; | |
448 | ||
449 | psy = tcd->devdata; | |
450 | ret = psy->get_property(psy, | |
451 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, &val); | |
452 | if (!ret) | |
453 | *state = val.intval; | |
454 | ||
455 | return ret; | |
456 | } | |
457 | ||
458 | static int ps_get_cur_chrage_cntl_limit(struct thermal_cooling_device *tcd, | |
459 | unsigned long *state) | |
460 | { | |
461 | struct power_supply *psy; | |
462 | union power_supply_propval val; | |
463 | int ret; | |
464 | ||
465 | psy = tcd->devdata; | |
466 | ret = psy->get_property(psy, | |
467 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val); | |
468 | if (!ret) | |
469 | *state = val.intval; | |
470 | ||
471 | return ret; | |
472 | } | |
473 | ||
474 | static int ps_set_cur_charge_cntl_limit(struct thermal_cooling_device *tcd, | |
475 | unsigned long state) | |
476 | { | |
477 | struct power_supply *psy; | |
478 | union power_supply_propval val; | |
479 | int ret; | |
480 | ||
481 | psy = tcd->devdata; | |
482 | val.intval = state; | |
483 | ret = psy->set_property(psy, | |
484 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val); | |
485 | ||
486 | return ret; | |
487 | } | |
488 | ||
489 | static struct thermal_cooling_device_ops psy_tcd_ops = { | |
490 | .get_max_state = ps_get_max_charge_cntl_limit, | |
491 | .get_cur_state = ps_get_cur_chrage_cntl_limit, | |
492 | .set_cur_state = ps_set_cur_charge_cntl_limit, | |
493 | }; | |
494 | ||
495 | static int psy_register_cooler(struct power_supply *psy) | |
496 | { | |
497 | int i; | |
498 | ||
499 | /* Register for cooling device if psy can control charging */ | |
500 | for (i = 0; i < psy->num_properties; i++) { | |
501 | if (psy->properties[i] == | |
502 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT) { | |
503 | psy->tcd = thermal_cooling_device_register( | |
504 | (char *)psy->name, | |
505 | psy, &psy_tcd_ops); | |
506 | if (IS_ERR(psy->tcd)) | |
507 | return PTR_ERR(psy->tcd); | |
508 | break; | |
509 | } | |
510 | } | |
511 | return 0; | |
512 | } | |
513 | ||
514 | static void psy_unregister_cooler(struct power_supply *psy) | |
515 | { | |
516 | if (IS_ERR_OR_NULL(psy->tcd)) | |
517 | return; | |
518 | thermal_cooling_device_unregister(psy->tcd); | |
519 | } | |
3be330bf JT |
520 | #else |
521 | static int psy_register_thermal(struct power_supply *psy) | |
522 | { | |
523 | return 0; | |
524 | } | |
525 | ||
526 | static void psy_unregister_thermal(struct power_supply *psy) | |
527 | { | |
528 | } | |
952aeeb3 RP |
529 | |
530 | static int psy_register_cooler(struct power_supply *psy) | |
531 | { | |
532 | return 0; | |
533 | } | |
534 | ||
535 | static void psy_unregister_cooler(struct power_supply *psy) | |
536 | { | |
537 | } | |
3be330bf JT |
538 | #endif |
539 | ||
c128d397 WY |
540 | static int __power_supply_register(struct device *parent, |
541 | struct power_supply *psy, bool ws) | |
4a11b59d | 542 | { |
5f487cd3 AV |
543 | struct device *dev; |
544 | int rc; | |
4a11b59d | 545 | |
5f487cd3 AV |
546 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
547 | if (!dev) | |
548 | return -ENOMEM; | |
4a11b59d | 549 | |
5f487cd3 | 550 | device_initialize(dev); |
4a11b59d | 551 | |
5f487cd3 AV |
552 | dev->class = power_supply_class; |
553 | dev->type = &power_supply_dev_type; | |
554 | dev->parent = parent; | |
555 | dev->release = power_supply_dev_release; | |
556 | dev_set_drvdata(dev, psy); | |
557 | psy->dev = dev; | |
558 | ||
80c6463e SK |
559 | rc = dev_set_name(dev, "%s", psy->name); |
560 | if (rc) | |
561 | goto dev_set_name_failed; | |
562 | ||
97774672 LPC |
563 | INIT_WORK(&psy->changed_work, power_supply_changed_work); |
564 | ||
f6e0b081 RK |
565 | rc = power_supply_check_supplies(psy); |
566 | if (rc) { | |
567 | dev_info(dev, "Not all required supplies found, defer probe\n"); | |
568 | goto check_supplies_failed; | |
569 | } | |
570 | ||
948dcf96 | 571 | spin_lock_init(&psy->changed_lock); |
9113e260 | 572 | rc = device_init_wakeup(dev, ws); |
948dcf96 ZM |
573 | if (rc) |
574 | goto wakeup_init_failed; | |
575 | ||
5f487cd3 | 576 | rc = device_add(dev); |
4a11b59d | 577 | if (rc) |
5f487cd3 AV |
578 | goto device_add_failed; |
579 | ||
3be330bf JT |
580 | rc = psy_register_thermal(psy); |
581 | if (rc) | |
582 | goto register_thermal_failed; | |
583 | ||
952aeeb3 RP |
584 | rc = psy_register_cooler(psy); |
585 | if (rc) | |
586 | goto register_cooler_failed; | |
587 | ||
4a11b59d AV |
588 | rc = power_supply_create_triggers(psy); |
589 | if (rc) | |
590 | goto create_triggers_failed; | |
591 | ||
592 | power_supply_changed(psy); | |
593 | ||
594 | goto success; | |
595 | ||
596 | create_triggers_failed: | |
952aeeb3 RP |
597 | psy_unregister_cooler(psy); |
598 | register_cooler_failed: | |
3be330bf JT |
599 | psy_unregister_thermal(psy); |
600 | register_thermal_failed: | |
3a2dbd61 | 601 | device_del(dev); |
5f487cd3 | 602 | device_add_failed: |
80c6463e | 603 | wakeup_init_failed: |
f6e0b081 | 604 | check_supplies_failed: |
80c6463e | 605 | dev_set_name_failed: |
3a2dbd61 | 606 | put_device(dev); |
4a11b59d AV |
607 | success: |
608 | return rc; | |
609 | } | |
9113e260 ZR |
610 | |
611 | int power_supply_register(struct device *parent, struct power_supply *psy) | |
612 | { | |
613 | return __power_supply_register(parent, psy, true); | |
614 | } | |
ff3417e7 | 615 | EXPORT_SYMBOL_GPL(power_supply_register); |
4a11b59d | 616 | |
9113e260 ZR |
617 | int power_supply_register_no_ws(struct device *parent, struct power_supply *psy) |
618 | { | |
619 | return __power_supply_register(parent, psy, false); | |
620 | } | |
621 | EXPORT_SYMBOL_GPL(power_supply_register_no_ws); | |
622 | ||
4a11b59d AV |
623 | void power_supply_unregister(struct power_supply *psy) |
624 | { | |
bc51e7ff | 625 | cancel_work_sync(&psy->changed_work); |
83516651 | 626 | sysfs_remove_link(&psy->dev->kobj, "powers"); |
4a11b59d | 627 | power_supply_remove_triggers(psy); |
952aeeb3 | 628 | psy_unregister_cooler(psy); |
3be330bf | 629 | psy_unregister_thermal(psy); |
948dcf96 | 630 | device_init_wakeup(psy->dev, false); |
4a11b59d | 631 | device_unregister(psy->dev); |
4a11b59d | 632 | } |
ff3417e7 | 633 | EXPORT_SYMBOL_GPL(power_supply_unregister); |
4a11b59d AV |
634 | |
635 | static int __init power_supply_class_init(void) | |
636 | { | |
637 | power_supply_class = class_create(THIS_MODULE, "power_supply"); | |
638 | ||
639 | if (IS_ERR(power_supply_class)) | |
640 | return PTR_ERR(power_supply_class); | |
641 | ||
642 | power_supply_class->dev_uevent = power_supply_uevent; | |
5f487cd3 | 643 | power_supply_init_attrs(&power_supply_dev_type); |
4a11b59d AV |
644 | |
645 | return 0; | |
646 | } | |
647 | ||
648 | static void __exit power_supply_class_exit(void) | |
649 | { | |
650 | class_destroy(power_supply_class); | |
4a11b59d AV |
651 | } |
652 | ||
4a11b59d AV |
653 | subsys_initcall(power_supply_class_init); |
654 | module_exit(power_supply_class_exit); | |
655 | ||
656 | MODULE_DESCRIPTION("Universal power supply monitor class"); | |
657 | MODULE_AUTHOR("Ian Molton <spyro@f2s.com>, " | |
658 | "Szabolcs Gyurko, " | |
659 | "Anton Vorontsov <cbou@mail.ru>"); | |
660 | MODULE_LICENSE("GPL"); |