Line data Source code
1 : /* SPDX-License-Identifier: GPL-2.0-only */
2 : /*
3 : * pm_runtime.h - Device run-time power management helper functions.
4 : *
5 : * Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>
6 : */
7 :
8 : #ifndef _LINUX_PM_RUNTIME_H
9 : #define _LINUX_PM_RUNTIME_H
10 :
11 : #include <linux/device.h>
12 : #include <linux/notifier.h>
13 : #include <linux/pm.h>
14 :
15 : #include <linux/jiffies.h>
16 :
17 : /* Runtime PM flag argument bits */
18 : #define RPM_ASYNC 0x01 /* Request is asynchronous */
19 : #define RPM_NOWAIT 0x02 /* Don't wait for concurrent
20 : state change */
21 : #define RPM_GET_PUT 0x04 /* Increment/decrement the
22 : usage_count */
23 : #define RPM_AUTO 0x08 /* Use autosuspend_delay */
24 :
25 : /*
26 : * Use this for defining a set of PM operations to be used in all situations
27 : * (system suspend, hibernation or runtime PM).
28 : *
29 : * Note that the behaviour differs from the deprecated UNIVERSAL_DEV_PM_OPS()
30 : * macro, which uses the provided callbacks for both runtime PM and system
31 : * sleep, while DEFINE_RUNTIME_DEV_PM_OPS() uses pm_runtime_force_suspend()
32 : * and pm_runtime_force_resume() for its system sleep callbacks.
33 : *
34 : * If the underlying dev_pm_ops struct symbol has to be exported, use
35 : * EXPORT_RUNTIME_DEV_PM_OPS() or EXPORT_GPL_RUNTIME_DEV_PM_OPS() instead.
36 : */
37 : #define DEFINE_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
38 : _DEFINE_DEV_PM_OPS(name, pm_runtime_force_suspend, \
39 : pm_runtime_force_resume, suspend_fn, \
40 : resume_fn, idle_fn)
41 :
42 : #define EXPORT_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
43 : _EXPORT_DEV_PM_OPS(name, pm_runtime_force_suspend, pm_runtime_force_resume, \
44 : suspend_fn, resume_fn, idle_fn, "")
45 : #define EXPORT_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
46 : _EXPORT_DEV_PM_OPS(name, pm_runtime_force_suspend, pm_runtime_force_resume, \
47 : suspend_fn, resume_fn, idle_fn, "_gpl")
48 :
49 : #ifdef CONFIG_PM
50 : extern struct workqueue_struct *pm_wq;
51 :
52 : static inline bool queue_pm_work(struct work_struct *work)
53 : {
54 : return queue_work(pm_wq, work);
55 : }
56 :
57 : extern int pm_generic_runtime_suspend(struct device *dev);
58 : extern int pm_generic_runtime_resume(struct device *dev);
59 : extern int pm_runtime_force_suspend(struct device *dev);
60 : extern int pm_runtime_force_resume(struct device *dev);
61 :
62 : extern int __pm_runtime_idle(struct device *dev, int rpmflags);
63 : extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
64 : extern int __pm_runtime_resume(struct device *dev, int rpmflags);
65 : extern int pm_runtime_get_if_active(struct device *dev, bool ign_usage_count);
66 : extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
67 : extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
68 : extern int pm_runtime_barrier(struct device *dev);
69 : extern void pm_runtime_enable(struct device *dev);
70 : extern void __pm_runtime_disable(struct device *dev, bool check_resume);
71 : extern void pm_runtime_allow(struct device *dev);
72 : extern void pm_runtime_forbid(struct device *dev);
73 : extern void pm_runtime_no_callbacks(struct device *dev);
74 : extern void pm_runtime_irq_safe(struct device *dev);
75 : extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
76 : extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay);
77 : extern u64 pm_runtime_autosuspend_expiration(struct device *dev);
78 : extern void pm_runtime_update_max_time_suspended(struct device *dev,
79 : s64 delta_ns);
80 : extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
81 : extern void pm_runtime_get_suppliers(struct device *dev);
82 : extern void pm_runtime_put_suppliers(struct device *dev);
83 : extern void pm_runtime_new_link(struct device *dev);
84 : extern void pm_runtime_drop_link(struct device_link *link);
85 : extern void pm_runtime_release_supplier(struct device_link *link, bool check_idle);
86 :
87 : extern int devm_pm_runtime_enable(struct device *dev);
88 :
89 : /**
90 : * pm_runtime_get_if_in_use - Conditionally bump up runtime PM usage counter.
91 : * @dev: Target device.
92 : *
93 : * Increment the runtime PM usage counter of @dev if its runtime PM status is
94 : * %RPM_ACTIVE and its runtime PM usage counter is greater than 0.
95 : */
96 : static inline int pm_runtime_get_if_in_use(struct device *dev)
97 : {
98 : return pm_runtime_get_if_active(dev, false);
99 : }
100 :
101 : /**
102 : * pm_suspend_ignore_children - Set runtime PM behavior regarding children.
103 : * @dev: Target device.
104 : * @enable: Whether or not to ignore possible dependencies on children.
105 : *
106 : * The dependencies of @dev on its children will not be taken into account by
107 : * the runtime PM framework going forward if @enable is %true, or they will
108 : * be taken into account otherwise.
109 : */
110 : static inline void pm_suspend_ignore_children(struct device *dev, bool enable)
111 : {
112 536 : dev->power.ignore_children = enable;
113 : }
114 :
115 : /**
116 : * pm_runtime_get_noresume - Bump up runtime PM usage counter of a device.
117 : * @dev: Target device.
118 : */
119 : static inline void pm_runtime_get_noresume(struct device *dev)
120 : {
121 2144 : atomic_inc(&dev->power.usage_count);
122 : }
123 :
124 : /**
125 : * pm_runtime_put_noidle - Drop runtime PM usage counter of a device.
126 : * @dev: Target device.
127 : *
128 : * Decrement the runtime PM usage counter of @dev unless it is 0 already.
129 : */
130 : static inline void pm_runtime_put_noidle(struct device *dev)
131 : {
132 1072 : atomic_add_unless(&dev->power.usage_count, -1, 0);
133 : }
134 :
135 : /**
136 : * pm_runtime_suspended - Check whether or not a device is runtime-suspended.
137 : * @dev: Target device.
138 : *
139 : * Return %true if runtime PM is enabled for @dev and its runtime PM status is
140 : * %RPM_SUSPENDED, or %false otherwise.
141 : *
142 : * Note that the return value of this function can only be trusted if it is
143 : * called under the runtime PM lock of @dev or under conditions in which
144 : * runtime PM cannot be either disabled or enabled for @dev and its runtime PM
145 : * status cannot change.
146 : */
147 : static inline bool pm_runtime_suspended(struct device *dev)
148 : {
149 0 : return dev->power.runtime_status == RPM_SUSPENDED
150 0 : && !dev->power.disable_depth;
151 : }
152 :
153 : /**
154 : * pm_runtime_active - Check whether or not a device is runtime-active.
155 : * @dev: Target device.
156 : *
157 : * Return %true if runtime PM is disabled for @dev or its runtime PM status is
158 : * %RPM_ACTIVE, or %false otherwise.
159 : *
160 : * Note that the return value of this function can only be trusted if it is
161 : * called under the runtime PM lock of @dev or under conditions in which
162 : * runtime PM cannot be either disabled or enabled for @dev and its runtime PM
163 : * status cannot change.
164 : */
165 : static inline bool pm_runtime_active(struct device *dev)
166 : {
167 : return dev->power.runtime_status == RPM_ACTIVE
168 : || dev->power.disable_depth;
169 : }
170 :
171 : /**
172 : * pm_runtime_status_suspended - Check if runtime PM status is "suspended".
173 : * @dev: Target device.
174 : *
175 : * Return %true if the runtime PM status of @dev is %RPM_SUSPENDED, or %false
176 : * otherwise, regardless of whether or not runtime PM has been enabled for @dev.
177 : *
178 : * Note that the return value of this function can only be trusted if it is
179 : * called under the runtime PM lock of @dev or under conditions in which the
180 : * runtime PM status of @dev cannot change.
181 : */
182 : static inline bool pm_runtime_status_suspended(struct device *dev)
183 : {
184 : return dev->power.runtime_status == RPM_SUSPENDED;
185 : }
186 :
187 : /**
188 : * pm_runtime_enabled - Check if runtime PM is enabled.
189 : * @dev: Target device.
190 : *
191 : * Return %true if runtime PM is enabled for @dev or %false otherwise.
192 : *
193 : * Note that the return value of this function can only be trusted if it is
194 : * called under the runtime PM lock of @dev or under conditions in which
195 : * runtime PM cannot be either disabled or enabled for @dev.
196 : */
197 : static inline bool pm_runtime_enabled(struct device *dev)
198 : {
199 0 : return !dev->power.disable_depth;
200 : }
201 :
202 : /**
203 : * pm_runtime_has_no_callbacks - Check if runtime PM callbacks may be present.
204 : * @dev: Target device.
205 : *
206 : * Return %true if @dev is a special device without runtime PM callbacks or
207 : * %false otherwise.
208 : */
209 : static inline bool pm_runtime_has_no_callbacks(struct device *dev)
210 : {
211 536 : return dev->power.no_callbacks;
212 : }
213 :
214 : /**
215 : * pm_runtime_mark_last_busy - Update the last access time of a device.
216 : * @dev: Target device.
217 : *
218 : * Update the last access time of @dev used by the runtime PM autosuspend
219 : * mechanism to the current time as returned by ktime_get_mono_fast_ns().
220 : */
221 : static inline void pm_runtime_mark_last_busy(struct device *dev)
222 : {
223 0 : WRITE_ONCE(dev->power.last_busy, ktime_get_mono_fast_ns());
224 : }
225 :
226 : /**
227 : * pm_runtime_is_irq_safe - Check if runtime PM can work in interrupt context.
228 : * @dev: Target device.
229 : *
230 : * Return %true if @dev has been marked as an "IRQ-safe" device (with respect
231 : * to runtime PM), in which case its runtime PM callabcks can be expected to
232 : * work correctly when invoked from interrupt handlers.
233 : */
234 : static inline bool pm_runtime_is_irq_safe(struct device *dev)
235 : {
236 : return dev->power.irq_safe;
237 : }
238 :
239 : extern u64 pm_runtime_suspended_time(struct device *dev);
240 :
241 : #else /* !CONFIG_PM */
242 :
243 : static inline bool queue_pm_work(struct work_struct *work) { return false; }
244 :
245 : static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
246 : static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
247 : static inline int pm_runtime_force_suspend(struct device *dev) { return 0; }
248 : static inline int pm_runtime_force_resume(struct device *dev) { return 0; }
249 :
250 : static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
251 : {
252 : return -ENOSYS;
253 : }
254 : static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
255 : {
256 : return -ENOSYS;
257 : }
258 : static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
259 : {
260 : return 1;
261 : }
262 : static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
263 : {
264 : return -ENOSYS;
265 : }
266 : static inline int pm_runtime_get_if_in_use(struct device *dev)
267 : {
268 : return -EINVAL;
269 : }
270 : static inline int pm_runtime_get_if_active(struct device *dev,
271 : bool ign_usage_count)
272 : {
273 : return -EINVAL;
274 : }
275 : static inline int __pm_runtime_set_status(struct device *dev,
276 : unsigned int status) { return 0; }
277 : static inline int pm_runtime_barrier(struct device *dev) { return 0; }
278 : static inline void pm_runtime_enable(struct device *dev) {}
279 : static inline void __pm_runtime_disable(struct device *dev, bool c) {}
280 : static inline void pm_runtime_allow(struct device *dev) {}
281 : static inline void pm_runtime_forbid(struct device *dev) {}
282 :
283 : static inline int devm_pm_runtime_enable(struct device *dev) { return 0; }
284 :
285 : static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
286 : static inline void pm_runtime_get_noresume(struct device *dev) {}
287 : static inline void pm_runtime_put_noidle(struct device *dev) {}
288 : static inline bool pm_runtime_suspended(struct device *dev) { return false; }
289 : static inline bool pm_runtime_active(struct device *dev) { return true; }
290 : static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
291 : static inline bool pm_runtime_enabled(struct device *dev) { return false; }
292 :
293 : static inline void pm_runtime_no_callbacks(struct device *dev) {}
294 : static inline void pm_runtime_irq_safe(struct device *dev) {}
295 : static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
296 :
297 : static inline bool pm_runtime_has_no_callbacks(struct device *dev) { return false; }
298 : static inline void pm_runtime_mark_last_busy(struct device *dev) {}
299 : static inline void __pm_runtime_use_autosuspend(struct device *dev,
300 : bool use) {}
301 : static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
302 : int delay) {}
303 : static inline u64 pm_runtime_autosuspend_expiration(
304 : struct device *dev) { return 0; }
305 : static inline void pm_runtime_set_memalloc_noio(struct device *dev,
306 : bool enable){}
307 : static inline void pm_runtime_get_suppliers(struct device *dev) {}
308 : static inline void pm_runtime_put_suppliers(struct device *dev) {}
309 : static inline void pm_runtime_new_link(struct device *dev) {}
310 : static inline void pm_runtime_drop_link(struct device_link *link) {}
311 : static inline void pm_runtime_release_supplier(struct device_link *link,
312 : bool check_idle) {}
313 :
314 : #endif /* !CONFIG_PM */
315 :
316 : /**
317 : * pm_runtime_idle - Conditionally set up autosuspend of a device or suspend it.
318 : * @dev: Target device.
319 : *
320 : * Invoke the "idle check" callback of @dev and, depending on its return value,
321 : * set up autosuspend of @dev or suspend it (depending on whether or not
322 : * autosuspend has been enabled for it).
323 : */
324 : static inline int pm_runtime_idle(struct device *dev)
325 : {
326 : return __pm_runtime_idle(dev, 0);
327 : }
328 :
329 : /**
330 : * pm_runtime_suspend - Suspend a device synchronously.
331 : * @dev: Target device.
332 : */
333 : static inline int pm_runtime_suspend(struct device *dev)
334 : {
335 0 : return __pm_runtime_suspend(dev, 0);
336 : }
337 :
338 : /**
339 : * pm_runtime_autosuspend - Set up autosuspend of a device or suspend it.
340 : * @dev: Target device.
341 : *
342 : * Set up autosuspend of @dev or suspend it (depending on whether or not
343 : * autosuspend is enabled for it) without engaging its "idle check" callback.
344 : */
345 : static inline int pm_runtime_autosuspend(struct device *dev)
346 : {
347 0 : return __pm_runtime_suspend(dev, RPM_AUTO);
348 : }
349 :
350 : /**
351 : * pm_runtime_resume - Resume a device synchronously.
352 : * @dev: Target device.
353 : */
354 : static inline int pm_runtime_resume(struct device *dev)
355 : {
356 0 : return __pm_runtime_resume(dev, 0);
357 : }
358 :
359 : /**
360 : * pm_request_idle - Queue up "idle check" execution for a device.
361 : * @dev: Target device.
362 : *
363 : * Queue up a work item to run an equivalent of pm_runtime_idle() for @dev
364 : * asynchronously.
365 : */
366 : static inline int pm_request_idle(struct device *dev)
367 : {
368 4 : return __pm_runtime_idle(dev, RPM_ASYNC);
369 : }
370 :
371 : /**
372 : * pm_request_resume - Queue up runtime-resume of a device.
373 : * @dev: Target device.
374 : */
375 : static inline int pm_request_resume(struct device *dev)
376 : {
377 0 : return __pm_runtime_resume(dev, RPM_ASYNC);
378 : }
379 :
380 : /**
381 : * pm_request_autosuspend - Queue up autosuspend of a device.
382 : * @dev: Target device.
383 : *
384 : * Queue up a work item to run an equivalent pm_runtime_autosuspend() for @dev
385 : * asynchronously.
386 : */
387 : static inline int pm_request_autosuspend(struct device *dev)
388 : {
389 0 : return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO);
390 : }
391 :
392 : /**
393 : * pm_runtime_get - Bump up usage counter and queue up resume of a device.
394 : * @dev: Target device.
395 : *
396 : * Bump up the runtime PM usage counter of @dev and queue up a work item to
397 : * carry out runtime-resume of it.
398 : */
399 : static inline int pm_runtime_get(struct device *dev)
400 : {
401 : return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC);
402 : }
403 :
404 : /**
405 : * pm_runtime_get_sync - Bump up usage counter of a device and resume it.
406 : * @dev: Target device.
407 : *
408 : * Bump up the runtime PM usage counter of @dev and carry out runtime-resume of
409 : * it synchronously.
410 : *
411 : * The possible return values of this function are the same as for
412 : * pm_runtime_resume() and the runtime PM usage counter of @dev remains
413 : * incremented in all cases, even if it returns an error code.
414 : * Consider using pm_runtime_resume_and_get() instead of it, especially
415 : * if its return value is checked by the caller, as this is likely to result
416 : * in cleaner code.
417 : */
418 : static inline int pm_runtime_get_sync(struct device *dev)
419 : {
420 0 : return __pm_runtime_resume(dev, RPM_GET_PUT);
421 : }
422 :
423 : /**
424 : * pm_runtime_resume_and_get - Bump up usage counter of a device and resume it.
425 : * @dev: Target device.
426 : *
427 : * Resume @dev synchronously and if that is successful, increment its runtime
428 : * PM usage counter. Return 0 if the runtime PM usage counter of @dev has been
429 : * incremented or a negative error code otherwise.
430 : */
431 : static inline int pm_runtime_resume_and_get(struct device *dev)
432 : {
433 : int ret;
434 :
435 : ret = __pm_runtime_resume(dev, RPM_GET_PUT);
436 : if (ret < 0) {
437 : pm_runtime_put_noidle(dev);
438 : return ret;
439 : }
440 :
441 : return 0;
442 : }
443 :
444 : /**
445 : * pm_runtime_put - Drop device usage counter and queue up "idle check" if 0.
446 : * @dev: Target device.
447 : *
448 : * Decrement the runtime PM usage counter of @dev and if it turns out to be
449 : * equal to 0, queue up a work item for @dev like in pm_request_idle().
450 : */
451 : static inline int pm_runtime_put(struct device *dev)
452 : {
453 0 : return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
454 : }
455 :
456 : /**
457 : * pm_runtime_put_autosuspend - Drop device usage counter and queue autosuspend if 0.
458 : * @dev: Target device.
459 : *
460 : * Decrement the runtime PM usage counter of @dev and if it turns out to be
461 : * equal to 0, queue up a work item for @dev like in pm_request_autosuspend().
462 : */
463 : static inline int pm_runtime_put_autosuspend(struct device *dev)
464 : {
465 0 : return __pm_runtime_suspend(dev,
466 : RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
467 : }
468 :
469 : /**
470 : * pm_runtime_put_sync - Drop device usage counter and run "idle check" if 0.
471 : * @dev: Target device.
472 : *
473 : * Decrement the runtime PM usage counter of @dev and if it turns out to be
474 : * equal to 0, invoke the "idle check" callback of @dev and, depending on its
475 : * return value, set up autosuspend of @dev or suspend it (depending on whether
476 : * or not autosuspend has been enabled for it).
477 : *
478 : * The possible return values of this function are the same as for
479 : * pm_runtime_idle() and the runtime PM usage counter of @dev remains
480 : * decremented in all cases, even if it returns an error code.
481 : */
482 : static inline int pm_runtime_put_sync(struct device *dev)
483 : {
484 0 : return __pm_runtime_idle(dev, RPM_GET_PUT);
485 : }
486 :
487 : /**
488 : * pm_runtime_put_sync_suspend - Drop device usage counter and suspend if 0.
489 : * @dev: Target device.
490 : *
491 : * Decrement the runtime PM usage counter of @dev and if it turns out to be
492 : * equal to 0, carry out runtime-suspend of @dev synchronously.
493 : *
494 : * The possible return values of this function are the same as for
495 : * pm_runtime_suspend() and the runtime PM usage counter of @dev remains
496 : * decremented in all cases, even if it returns an error code.
497 : */
498 : static inline int pm_runtime_put_sync_suspend(struct device *dev)
499 : {
500 : return __pm_runtime_suspend(dev, RPM_GET_PUT);
501 : }
502 :
503 : /**
504 : * pm_runtime_put_sync_autosuspend - Drop device usage counter and autosuspend if 0.
505 : * @dev: Target device.
506 : *
507 : * Decrement the runtime PM usage counter of @dev and if it turns out to be
508 : * equal to 0, set up autosuspend of @dev or suspend it synchronously (depending
509 : * on whether or not autosuspend has been enabled for it).
510 : *
511 : * The possible return values of this function are the same as for
512 : * pm_runtime_autosuspend() and the runtime PM usage counter of @dev remains
513 : * decremented in all cases, even if it returns an error code.
514 : */
515 : static inline int pm_runtime_put_sync_autosuspend(struct device *dev)
516 : {
517 : return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO);
518 : }
519 :
520 : /**
521 : * pm_runtime_set_active - Set runtime PM status to "active".
522 : * @dev: Target device.
523 : *
524 : * Set the runtime PM status of @dev to %RPM_ACTIVE and ensure that dependencies
525 : * of it will be taken into account.
526 : *
527 : * It is not valid to call this function for devices with runtime PM enabled.
528 : */
529 : static inline int pm_runtime_set_active(struct device *dev)
530 : {
531 0 : return __pm_runtime_set_status(dev, RPM_ACTIVE);
532 : }
533 :
534 : /**
535 : * pm_runtime_set_suspended - Set runtime PM status to "suspended".
536 : * @dev: Target device.
537 : *
538 : * Set the runtime PM status of @dev to %RPM_SUSPENDED and ensure that
539 : * dependencies of it will be taken into account.
540 : *
541 : * It is not valid to call this function for devices with runtime PM enabled.
542 : */
543 : static inline int pm_runtime_set_suspended(struct device *dev)
544 : {
545 0 : return __pm_runtime_set_status(dev, RPM_SUSPENDED);
546 : }
547 :
548 : /**
549 : * pm_runtime_disable - Disable runtime PM for a device.
550 : * @dev: Target device.
551 : *
552 : * Prevent the runtime PM framework from working with @dev (by incrementing its
553 : * "blocking" counter).
554 : *
555 : * For each invocation of this function for @dev there must be a matching
556 : * pm_runtime_enable() call in order for runtime PM to be enabled for it.
557 : */
558 : static inline void pm_runtime_disable(struct device *dev)
559 : {
560 0 : __pm_runtime_disable(dev, true);
561 : }
562 :
563 : /**
564 : * pm_runtime_use_autosuspend - Allow autosuspend to be used for a device.
565 : * @dev: Target device.
566 : *
567 : * Allow the runtime PM autosuspend mechanism to be used for @dev whenever
568 : * requested (or "autosuspend" will be handled as direct runtime-suspend for
569 : * it).
570 : *
571 : * NOTE: It's important to undo this with pm_runtime_dont_use_autosuspend()
572 : * at driver exit time unless your driver initially enabled pm_runtime
573 : * with devm_pm_runtime_enable() (which handles it for you).
574 : */
575 : static inline void pm_runtime_use_autosuspend(struct device *dev)
576 : {
577 0 : __pm_runtime_use_autosuspend(dev, true);
578 : }
579 :
580 : /**
581 : * pm_runtime_dont_use_autosuspend - Prevent autosuspend from being used.
582 : * @dev: Target device.
583 : *
584 : * Prevent the runtime PM autosuspend mechanism from being used for @dev which
585 : * means that "autosuspend" will be handled as direct runtime-suspend for it
586 : * going forward.
587 : */
588 : static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
589 : {
590 0 : __pm_runtime_use_autosuspend(dev, false);
591 : }
592 :
593 : #endif
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