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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/base/power/sysfs.c - sysfs entries for device PM | |
3 | */ | |
4 | ||
5 | #include <linux/device.h> | |
8c65b4a6 | 6 | #include <linux/string.h> |
1b6bc32f | 7 | #include <linux/export.h> |
53823639 | 8 | #include <linux/pm_runtime.h> |
60063497 | 9 | #include <linux/atomic.h> |
8d4b9d1b | 10 | #include <linux/jiffies.h> |
1da177e4 LT |
11 | #include "power.h" |
12 | ||
0ac85241 | 13 | /* |
53823639 RW |
14 | * control - Report/change current runtime PM setting of the device |
15 | * | |
16 | * Runtime power management of a device can be blocked with the help of | |
17 | * this attribute. All devices have one of the following two values for | |
18 | * the power/control file: | |
19 | * | |
20 | * + "auto\n" to allow the device to be power managed at run time; | |
21 | * + "on\n" to prevent the device from being power managed at run time; | |
22 | * | |
23 | * The default for all devices is "auto", which means that devices may be | |
24 | * subject to automatic power management, depending on their drivers. | |
25 | * Changing this attribute to "on" prevents the driver from power managing | |
26 | * the device at run time. Doing that while the device is suspended causes | |
27 | * it to be woken up. | |
28 | * | |
0ac85241 DB |
29 | * wakeup - Report/change current wakeup option for device |
30 | * | |
31 | * Some devices support "wakeup" events, which are hardware signals | |
32 | * used to activate devices from suspended or low power states. Such | |
33 | * devices have one of three values for the sysfs power/wakeup file: | |
34 | * | |
35 | * + "enabled\n" to issue the events; | |
36 | * + "disabled\n" not to do so; or | |
37 | * + "\n" for temporary or permanent inability to issue wakeup. | |
38 | * | |
39 | * (For example, unconfigured USB devices can't issue wakeups.) | |
40 | * | |
41 | * Familiar examples of devices that can issue wakeup events include | |
42 | * keyboards and mice (both PS2 and USB styles), power buttons, modems, | |
43 | * "Wake-On-LAN" Ethernet links, GPIO lines, and more. Some events | |
44 | * will wake the entire system from a suspend state; others may just | |
45 | * wake up the device (if the system as a whole is already active). | |
46 | * Some wakeup events use normal IRQ lines; other use special out | |
47 | * of band signaling. | |
48 | * | |
49 | * It is the responsibility of device drivers to enable (or disable) | |
50 | * wakeup signaling as part of changing device power states, respecting | |
51 | * the policy choices provided through the driver model. | |
52 | * | |
53 | * Devices may not be able to generate wakeup events from all power | |
54 | * states. Also, the events may be ignored in some configurations; | |
55 | * for example, they might need help from other devices that aren't | |
56 | * active, or which may have wakeup disabled. Some drivers rely on | |
57 | * wakeup events internally (unless they are disabled), keeping | |
58 | * their hardware in low power modes whenever they're unused. This | |
59 | * saves runtime power, without requiring system-wide sleep states. | |
5a2eb858 RW |
60 | * |
61 | * async - Report/change current async suspend setting for the device | |
62 | * | |
63 | * Asynchronous suspend and resume of the device during system-wide power | |
64 | * state transitions can be enabled by writing "enabled" to this file. | |
65 | * Analogously, if "disabled" is written to this file, the device will be | |
66 | * suspended and resumed synchronously. | |
67 | * | |
68 | * All devices have one of the following two values for power/async: | |
69 | * | |
70 | * + "enabled\n" to permit the asynchronous suspend/resume of the device; | |
71 | * + "disabled\n" to forbid it; | |
72 | * | |
73 | * NOTE: It generally is unsafe to permit the asynchronous suspend/resume | |
74 | * of a device unless it is certain that all of the PM dependencies of the | |
75 | * device are known to the PM core. However, for some devices this | |
76 | * attribute is set to "enabled" by bus type code or device drivers and in | |
77 | * that cases it should be safe to leave the default value. | |
c125e96f | 78 | * |
15bcb91d AS |
79 | * autosuspend_delay_ms - Report/change a device's autosuspend_delay value |
80 | * | |
81 | * Some drivers don't want to carry out a runtime suspend as soon as a | |
82 | * device becomes idle; they want it always to remain idle for some period | |
83 | * of time before suspending it. This period is the autosuspend_delay | |
84 | * value (expressed in milliseconds) and it can be controlled by the user. | |
85 | * If the value is negative then the device will never be runtime | |
86 | * suspended. | |
87 | * | |
88 | * NOTE: The autosuspend_delay_ms attribute and the autosuspend_delay | |
89 | * value are used only if the driver calls pm_runtime_use_autosuspend(). | |
90 | * | |
c125e96f | 91 | * wakeup_count - Report the number of wakeup events related to the device |
0ac85241 DB |
92 | */ |
93 | ||
94 | static const char enabled[] = "enabled"; | |
95 | static const char disabled[] = "disabled"; | |
96 | ||
7490e442 AS |
97 | const char power_group_name[] = "power"; |
98 | EXPORT_SYMBOL_GPL(power_group_name); | |
99 | ||
53823639 RW |
100 | #ifdef CONFIG_PM_RUNTIME |
101 | static const char ctrl_auto[] = "auto"; | |
102 | static const char ctrl_on[] = "on"; | |
103 | ||
104 | static ssize_t control_show(struct device *dev, struct device_attribute *attr, | |
105 | char *buf) | |
106 | { | |
107 | return sprintf(buf, "%s\n", | |
108 | dev->power.runtime_auto ? ctrl_auto : ctrl_on); | |
109 | } | |
110 | ||
111 | static ssize_t control_store(struct device * dev, struct device_attribute *attr, | |
112 | const char * buf, size_t n) | |
113 | { | |
114 | char *cp; | |
115 | int len = n; | |
116 | ||
117 | cp = memchr(buf, '\n', n); | |
118 | if (cp) | |
119 | len = cp - buf; | |
69c843b4 | 120 | device_lock(dev); |
53823639 RW |
121 | if (len == sizeof ctrl_auto - 1 && strncmp(buf, ctrl_auto, len) == 0) |
122 | pm_runtime_allow(dev); | |
123 | else if (len == sizeof ctrl_on - 1 && strncmp(buf, ctrl_on, len) == 0) | |
124 | pm_runtime_forbid(dev); | |
125 | else | |
69c843b4 AS |
126 | n = -EINVAL; |
127 | device_unlock(dev); | |
53823639 RW |
128 | return n; |
129 | } | |
130 | ||
131 | static DEVICE_ATTR(control, 0644, control_show, control_store); | |
0fcb4eef | 132 | |
8d4b9d1b AV |
133 | static ssize_t rtpm_active_time_show(struct device *dev, |
134 | struct device_attribute *attr, char *buf) | |
135 | { | |
136 | int ret; | |
137 | spin_lock_irq(&dev->power.lock); | |
138 | update_pm_runtime_accounting(dev); | |
139 | ret = sprintf(buf, "%i\n", jiffies_to_msecs(dev->power.active_jiffies)); | |
140 | spin_unlock_irq(&dev->power.lock); | |
141 | return ret; | |
142 | } | |
143 | ||
144 | static DEVICE_ATTR(runtime_active_time, 0444, rtpm_active_time_show, NULL); | |
145 | ||
146 | static ssize_t rtpm_suspended_time_show(struct device *dev, | |
147 | struct device_attribute *attr, char *buf) | |
148 | { | |
149 | int ret; | |
150 | spin_lock_irq(&dev->power.lock); | |
151 | update_pm_runtime_accounting(dev); | |
152 | ret = sprintf(buf, "%i\n", | |
153 | jiffies_to_msecs(dev->power.suspended_jiffies)); | |
154 | spin_unlock_irq(&dev->power.lock); | |
155 | return ret; | |
156 | } | |
157 | ||
158 | static DEVICE_ATTR(runtime_suspended_time, 0444, rtpm_suspended_time_show, NULL); | |
159 | ||
0fcb4eef AS |
160 | static ssize_t rtpm_status_show(struct device *dev, |
161 | struct device_attribute *attr, char *buf) | |
162 | { | |
163 | const char *p; | |
164 | ||
165 | if (dev->power.runtime_error) { | |
166 | p = "error\n"; | |
167 | } else if (dev->power.disable_depth) { | |
168 | p = "unsupported\n"; | |
169 | } else { | |
170 | switch (dev->power.runtime_status) { | |
171 | case RPM_SUSPENDED: | |
172 | p = "suspended\n"; | |
173 | break; | |
174 | case RPM_SUSPENDING: | |
175 | p = "suspending\n"; | |
176 | break; | |
177 | case RPM_RESUMING: | |
178 | p = "resuming\n"; | |
179 | break; | |
180 | case RPM_ACTIVE: | |
181 | p = "active\n"; | |
182 | break; | |
183 | default: | |
184 | return -EIO; | |
185 | } | |
186 | } | |
187 | return sprintf(buf, p); | |
188 | } | |
189 | ||
190 | static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL); | |
15bcb91d AS |
191 | |
192 | static ssize_t autosuspend_delay_ms_show(struct device *dev, | |
193 | struct device_attribute *attr, char *buf) | |
194 | { | |
195 | if (!dev->power.use_autosuspend) | |
196 | return -EIO; | |
197 | return sprintf(buf, "%d\n", dev->power.autosuspend_delay); | |
198 | } | |
199 | ||
200 | static ssize_t autosuspend_delay_ms_store(struct device *dev, | |
201 | struct device_attribute *attr, const char *buf, size_t n) | |
202 | { | |
203 | long delay; | |
204 | ||
205 | if (!dev->power.use_autosuspend) | |
206 | return -EIO; | |
207 | ||
208 | if (strict_strtol(buf, 10, &delay) != 0 || delay != (int) delay) | |
209 | return -EINVAL; | |
210 | ||
69c843b4 | 211 | device_lock(dev); |
15bcb91d | 212 | pm_runtime_set_autosuspend_delay(dev, delay); |
69c843b4 | 213 | device_unlock(dev); |
15bcb91d AS |
214 | return n; |
215 | } | |
216 | ||
217 | static DEVICE_ATTR(autosuspend_delay_ms, 0644, autosuspend_delay_ms_show, | |
218 | autosuspend_delay_ms_store); | |
219 | ||
e762318b | 220 | #endif /* CONFIG_PM_RUNTIME */ |
53823639 | 221 | |
e762318b | 222 | #ifdef CONFIG_PM_SLEEP |
0ac85241 DB |
223 | static ssize_t |
224 | wake_show(struct device * dev, struct device_attribute *attr, char * buf) | |
225 | { | |
226 | return sprintf(buf, "%s\n", device_can_wakeup(dev) | |
227 | ? (device_may_wakeup(dev) ? enabled : disabled) | |
228 | : ""); | |
229 | } | |
230 | ||
231 | static ssize_t | |
232 | wake_store(struct device * dev, struct device_attribute *attr, | |
233 | const char * buf, size_t n) | |
234 | { | |
235 | char *cp; | |
236 | int len = n; | |
237 | ||
238 | if (!device_can_wakeup(dev)) | |
239 | return -EINVAL; | |
240 | ||
241 | cp = memchr(buf, '\n', n); | |
242 | if (cp) | |
243 | len = cp - buf; | |
244 | if (len == sizeof enabled - 1 | |
245 | && strncmp(buf, enabled, sizeof enabled - 1) == 0) | |
246 | device_set_wakeup_enable(dev, 1); | |
247 | else if (len == sizeof disabled - 1 | |
248 | && strncmp(buf, disabled, sizeof disabled - 1) == 0) | |
249 | device_set_wakeup_enable(dev, 0); | |
250 | else | |
251 | return -EINVAL; | |
252 | return n; | |
253 | } | |
254 | ||
255 | static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store); | |
256 | ||
c125e96f RW |
257 | static ssize_t wakeup_count_show(struct device *dev, |
258 | struct device_attribute *attr, char *buf) | |
259 | { | |
074037ec RW |
260 | unsigned long count = 0; |
261 | bool enabled = false; | |
262 | ||
263 | spin_lock_irq(&dev->power.lock); | |
264 | if (dev->power.wakeup) { | |
265 | count = dev->power.wakeup->event_count; | |
266 | enabled = true; | |
267 | } | |
268 | spin_unlock_irq(&dev->power.lock); | |
269 | return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n"); | |
c125e96f RW |
270 | } |
271 | ||
272 | static DEVICE_ATTR(wakeup_count, 0444, wakeup_count_show, NULL); | |
074037ec RW |
273 | |
274 | static ssize_t wakeup_active_count_show(struct device *dev, | |
275 | struct device_attribute *attr, char *buf) | |
276 | { | |
277 | unsigned long count = 0; | |
278 | bool enabled = false; | |
279 | ||
280 | spin_lock_irq(&dev->power.lock); | |
281 | if (dev->power.wakeup) { | |
282 | count = dev->power.wakeup->active_count; | |
283 | enabled = true; | |
284 | } | |
285 | spin_unlock_irq(&dev->power.lock); | |
286 | return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n"); | |
287 | } | |
288 | ||
289 | static DEVICE_ATTR(wakeup_active_count, 0444, wakeup_active_count_show, NULL); | |
290 | ||
291 | static ssize_t wakeup_hit_count_show(struct device *dev, | |
292 | struct device_attribute *attr, char *buf) | |
293 | { | |
294 | unsigned long count = 0; | |
295 | bool enabled = false; | |
296 | ||
297 | spin_lock_irq(&dev->power.lock); | |
298 | if (dev->power.wakeup) { | |
299 | count = dev->power.wakeup->hit_count; | |
300 | enabled = true; | |
301 | } | |
302 | spin_unlock_irq(&dev->power.lock); | |
303 | return enabled ? sprintf(buf, "%lu\n", count) : sprintf(buf, "\n"); | |
304 | } | |
305 | ||
306 | static DEVICE_ATTR(wakeup_hit_count, 0444, wakeup_hit_count_show, NULL); | |
307 | ||
308 | static ssize_t wakeup_active_show(struct device *dev, | |
309 | struct device_attribute *attr, char *buf) | |
310 | { | |
311 | unsigned int active = 0; | |
312 | bool enabled = false; | |
313 | ||
314 | spin_lock_irq(&dev->power.lock); | |
315 | if (dev->power.wakeup) { | |
316 | active = dev->power.wakeup->active; | |
317 | enabled = true; | |
318 | } | |
319 | spin_unlock_irq(&dev->power.lock); | |
320 | return enabled ? sprintf(buf, "%u\n", active) : sprintf(buf, "\n"); | |
321 | } | |
322 | ||
323 | static DEVICE_ATTR(wakeup_active, 0444, wakeup_active_show, NULL); | |
324 | ||
325 | static ssize_t wakeup_total_time_show(struct device *dev, | |
326 | struct device_attribute *attr, char *buf) | |
327 | { | |
328 | s64 msec = 0; | |
329 | bool enabled = false; | |
330 | ||
331 | spin_lock_irq(&dev->power.lock); | |
332 | if (dev->power.wakeup) { | |
333 | msec = ktime_to_ms(dev->power.wakeup->total_time); | |
334 | enabled = true; | |
335 | } | |
336 | spin_unlock_irq(&dev->power.lock); | |
337 | return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n"); | |
338 | } | |
339 | ||
340 | static DEVICE_ATTR(wakeup_total_time_ms, 0444, wakeup_total_time_show, NULL); | |
341 | ||
342 | static ssize_t wakeup_max_time_show(struct device *dev, | |
343 | struct device_attribute *attr, char *buf) | |
344 | { | |
345 | s64 msec = 0; | |
346 | bool enabled = false; | |
347 | ||
348 | spin_lock_irq(&dev->power.lock); | |
349 | if (dev->power.wakeup) { | |
350 | msec = ktime_to_ms(dev->power.wakeup->max_time); | |
351 | enabled = true; | |
352 | } | |
353 | spin_unlock_irq(&dev->power.lock); | |
354 | return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n"); | |
355 | } | |
356 | ||
357 | static DEVICE_ATTR(wakeup_max_time_ms, 0444, wakeup_max_time_show, NULL); | |
358 | ||
359 | static ssize_t wakeup_last_time_show(struct device *dev, | |
360 | struct device_attribute *attr, char *buf) | |
361 | { | |
362 | s64 msec = 0; | |
363 | bool enabled = false; | |
364 | ||
365 | spin_lock_irq(&dev->power.lock); | |
366 | if (dev->power.wakeup) { | |
367 | msec = ktime_to_ms(dev->power.wakeup->last_time); | |
368 | enabled = true; | |
369 | } | |
370 | spin_unlock_irq(&dev->power.lock); | |
371 | return enabled ? sprintf(buf, "%lld\n", msec) : sprintf(buf, "\n"); | |
372 | } | |
373 | ||
374 | static DEVICE_ATTR(wakeup_last_time_ms, 0444, wakeup_last_time_show, NULL); | |
375 | #endif /* CONFIG_PM_SLEEP */ | |
c125e96f | 376 | |
c92445fa DB |
377 | #ifdef CONFIG_PM_ADVANCED_DEBUG |
378 | #ifdef CONFIG_PM_RUNTIME | |
379 | ||
380 | static ssize_t rtpm_usagecount_show(struct device *dev, | |
381 | struct device_attribute *attr, char *buf) | |
382 | { | |
383 | return sprintf(buf, "%d\n", atomic_read(&dev->power.usage_count)); | |
384 | } | |
385 | ||
386 | static ssize_t rtpm_children_show(struct device *dev, | |
387 | struct device_attribute *attr, char *buf) | |
388 | { | |
389 | return sprintf(buf, "%d\n", dev->power.ignore_children ? | |
390 | 0 : atomic_read(&dev->power.child_count)); | |
391 | } | |
392 | ||
393 | static ssize_t rtpm_enabled_show(struct device *dev, | |
394 | struct device_attribute *attr, char *buf) | |
395 | { | |
396 | if ((dev->power.disable_depth) && (dev->power.runtime_auto == false)) | |
397 | return sprintf(buf, "disabled & forbidden\n"); | |
398 | else if (dev->power.disable_depth) | |
399 | return sprintf(buf, "disabled\n"); | |
400 | else if (dev->power.runtime_auto == false) | |
401 | return sprintf(buf, "forbidden\n"); | |
402 | return sprintf(buf, "enabled\n"); | |
403 | } | |
404 | ||
c92445fa DB |
405 | static DEVICE_ATTR(runtime_usage, 0444, rtpm_usagecount_show, NULL); |
406 | static DEVICE_ATTR(runtime_active_kids, 0444, rtpm_children_show, NULL); | |
c92445fa DB |
407 | static DEVICE_ATTR(runtime_enabled, 0444, rtpm_enabled_show, NULL); |
408 | ||
409 | #endif | |
410 | ||
5a2eb858 RW |
411 | static ssize_t async_show(struct device *dev, struct device_attribute *attr, |
412 | char *buf) | |
413 | { | |
414 | return sprintf(buf, "%s\n", | |
415 | device_async_suspend_enabled(dev) ? enabled : disabled); | |
416 | } | |
417 | ||
418 | static ssize_t async_store(struct device *dev, struct device_attribute *attr, | |
419 | const char *buf, size_t n) | |
420 | { | |
421 | char *cp; | |
422 | int len = n; | |
423 | ||
424 | cp = memchr(buf, '\n', n); | |
425 | if (cp) | |
426 | len = cp - buf; | |
427 | if (len == sizeof enabled - 1 && strncmp(buf, enabled, len) == 0) | |
428 | device_enable_async_suspend(dev); | |
429 | else if (len == sizeof disabled - 1 && strncmp(buf, disabled, len) == 0) | |
430 | device_disable_async_suspend(dev); | |
431 | else | |
432 | return -EINVAL; | |
433 | return n; | |
434 | } | |
435 | ||
436 | static DEVICE_ATTR(async, 0644, async_show, async_store); | |
c92445fa | 437 | #endif /* CONFIG_PM_ADVANCED_DEBUG */ |
0ac85241 | 438 | |
cb8f51bd | 439 | static struct attribute *power_attrs[] = { |
c92445fa | 440 | #ifdef CONFIG_PM_ADVANCED_DEBUG |
cb8f51bd | 441 | #ifdef CONFIG_PM_SLEEP |
5a2eb858 | 442 | &dev_attr_async.attr, |
cb8f51bd | 443 | #endif |
c92445fa | 444 | #ifdef CONFIG_PM_RUNTIME |
7490e442 | 445 | &dev_attr_runtime_status.attr, |
c92445fa DB |
446 | &dev_attr_runtime_usage.attr, |
447 | &dev_attr_runtime_active_kids.attr, | |
c92445fa DB |
448 | &dev_attr_runtime_enabled.attr, |
449 | #endif | |
cb8f51bd | 450 | #endif /* CONFIG_PM_ADVANCED_DEBUG */ |
1da177e4 LT |
451 | NULL, |
452 | }; | |
453 | static struct attribute_group pm_attr_group = { | |
7490e442 | 454 | .name = power_group_name, |
1da177e4 LT |
455 | .attrs = power_attrs, |
456 | }; | |
457 | ||
cb8f51bd RW |
458 | static struct attribute *wakeup_attrs[] = { |
459 | #ifdef CONFIG_PM_SLEEP | |
460 | &dev_attr_wakeup.attr, | |
461 | &dev_attr_wakeup_count.attr, | |
462 | &dev_attr_wakeup_active_count.attr, | |
463 | &dev_attr_wakeup_hit_count.attr, | |
464 | &dev_attr_wakeup_active.attr, | |
465 | &dev_attr_wakeup_total_time_ms.attr, | |
466 | &dev_attr_wakeup_max_time_ms.attr, | |
467 | &dev_attr_wakeup_last_time_ms.attr, | |
468 | #endif | |
469 | NULL, | |
470 | }; | |
471 | static struct attribute_group pm_wakeup_attr_group = { | |
472 | .name = power_group_name, | |
473 | .attrs = wakeup_attrs, | |
474 | }; | |
7490e442 AS |
475 | |
476 | static struct attribute *runtime_attrs[] = { | |
cb8f51bd | 477 | #ifdef CONFIG_PM_RUNTIME |
7490e442 AS |
478 | #ifndef CONFIG_PM_ADVANCED_DEBUG |
479 | &dev_attr_runtime_status.attr, | |
480 | #endif | |
481 | &dev_attr_control.attr, | |
482 | &dev_attr_runtime_suspended_time.attr, | |
483 | &dev_attr_runtime_active_time.attr, | |
15bcb91d | 484 | &dev_attr_autosuspend_delay_ms.attr, |
cb8f51bd | 485 | #endif /* CONFIG_PM_RUNTIME */ |
7490e442 AS |
486 | NULL, |
487 | }; | |
488 | static struct attribute_group pm_runtime_attr_group = { | |
489 | .name = power_group_name, | |
490 | .attrs = runtime_attrs, | |
491 | }; | |
492 | ||
493 | int dpm_sysfs_add(struct device *dev) | |
494 | { | |
495 | int rc; | |
496 | ||
497 | rc = sysfs_create_group(&dev->kobj, &pm_attr_group); | |
cb8f51bd RW |
498 | if (rc) |
499 | return rc; | |
500 | ||
501 | if (pm_runtime_callbacks_present(dev)) { | |
7490e442 AS |
502 | rc = sysfs_merge_group(&dev->kobj, &pm_runtime_attr_group); |
503 | if (rc) | |
cb8f51bd RW |
504 | goto err_out; |
505 | } | |
506 | ||
507 | if (device_can_wakeup(dev)) { | |
508 | rc = sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group); | |
509 | if (rc) { | |
510 | if (pm_runtime_callbacks_present(dev)) | |
511 | sysfs_unmerge_group(&dev->kobj, | |
512 | &pm_runtime_attr_group); | |
513 | goto err_out; | |
514 | } | |
7490e442 | 515 | } |
cb8f51bd RW |
516 | return 0; |
517 | ||
518 | err_out: | |
519 | sysfs_remove_group(&dev->kobj, &pm_attr_group); | |
7490e442 AS |
520 | return rc; |
521 | } | |
522 | ||
cb8f51bd | 523 | int wakeup_sysfs_add(struct device *dev) |
7490e442 | 524 | { |
cb8f51bd | 525 | return sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group); |
7490e442 AS |
526 | } |
527 | ||
cb8f51bd | 528 | void wakeup_sysfs_remove(struct device *dev) |
7490e442 | 529 | { |
cb8f51bd | 530 | sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group); |
7490e442 AS |
531 | } |
532 | ||
cb8f51bd | 533 | void rpm_sysfs_remove(struct device *dev) |
1da177e4 | 534 | { |
cb8f51bd | 535 | sysfs_unmerge_group(&dev->kobj, &pm_runtime_attr_group); |
1da177e4 LT |
536 | } |
537 | ||
cb8f51bd | 538 | void dpm_sysfs_remove(struct device *dev) |
1da177e4 | 539 | { |
cb8f51bd RW |
540 | rpm_sysfs_remove(dev); |
541 | sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group); | |
1da177e4 LT |
542 | sysfs_remove_group(&dev->kobj, &pm_attr_group); |
543 | } |