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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) = { \
44 RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
45 }
46#define EXPORT_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
47 EXPORT_GPL_DEV_PM_OPS(name) = { \
48 RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
49 }
50#define EXPORT_NS_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn, ns) \
51 EXPORT_NS_DEV_PM_OPS(name, ns) = { \
52 RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
53 }
54#define EXPORT_NS_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn, ns) \
55 EXPORT_NS_GPL_DEV_PM_OPS(name, ns) = { \
56 RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
57 }
58
59#ifdef CONFIG_PM
60extern struct workqueue_struct *pm_wq;
61
62static inline bool queue_pm_work(struct work_struct *work)
63{
64 return queue_work(pm_wq, work);
65}
66
67extern int pm_generic_runtime_suspend(struct device *dev);
68extern int pm_generic_runtime_resume(struct device *dev);
69extern bool pm_runtime_need_not_resume(struct device *dev);
70extern int pm_runtime_force_suspend(struct device *dev);
71extern int pm_runtime_force_resume(struct device *dev);
72
73extern int __pm_runtime_idle(struct device *dev, int rpmflags);
74extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
75extern int __pm_runtime_resume(struct device *dev, int rpmflags);
76extern int pm_runtime_get_if_active(struct device *dev);
77extern int pm_runtime_get_if_in_use(struct device *dev);
78extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
79extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
80extern int pm_runtime_barrier(struct device *dev);
81extern bool pm_runtime_block_if_disabled(struct device *dev);
82extern void pm_runtime_unblock(struct device *dev);
83extern void pm_runtime_enable(struct device *dev);
84extern void __pm_runtime_disable(struct device *dev, bool check_resume);
85extern void pm_runtime_allow(struct device *dev);
86extern void pm_runtime_forbid(struct device *dev);
87extern void pm_runtime_no_callbacks(struct device *dev);
88extern void pm_runtime_irq_safe(struct device *dev);
89extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
90extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay);
91extern u64 pm_runtime_autosuspend_expiration(struct device *dev);
92extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
93extern void pm_runtime_get_suppliers(struct device *dev);
94extern void pm_runtime_put_suppliers(struct device *dev);
95extern void pm_runtime_new_link(struct device *dev);
96extern void pm_runtime_drop_link(struct device_link *link);
97extern void pm_runtime_release_supplier(struct device_link *link);
98
99int devm_pm_runtime_set_active_enabled(struct device *dev);
100extern int devm_pm_runtime_enable(struct device *dev);
101int devm_pm_runtime_get_noresume(struct device *dev);
102
103/**
104 * pm_suspend_ignore_children - Set runtime PM behavior regarding children.
105 * @dev: Target device.
106 * @enable: Whether or not to ignore possible dependencies on children.
107 *
108 * The dependencies of @dev on its children will not be taken into account by
109 * the runtime PM framework going forward if @enable is %true, or they will
110 * be taken into account otherwise.
111 */
112static inline void pm_suspend_ignore_children(struct device *dev, bool enable)
113{
114 dev->power.ignore_children = enable;
115}
116
117/**
118 * pm_runtime_get_noresume - Bump up runtime PM usage counter of a device.
119 * @dev: Target device.
120 */
121static inline void pm_runtime_get_noresume(struct device *dev)
122{
123 atomic_inc(&dev->power.usage_count);
124}
125
126/**
127 * pm_runtime_put_noidle - Drop runtime PM usage counter of a device.
128 * @dev: Target device.
129 *
130 * Decrement the runtime PM usage counter of @dev unless it is 0 already.
131 */
132static inline void pm_runtime_put_noidle(struct device *dev)
133{
134 atomic_add_unless(&dev->power.usage_count, -1, 0);
135}
136
137/**
138 * pm_runtime_suspended - Check whether or not a device is runtime-suspended.
139 * @dev: Target device.
140 *
141 * Return %true if runtime PM is enabled for @dev and its runtime PM status is
142 * %RPM_SUSPENDED, or %false otherwise.
143 *
144 * Note that the return value of this function can only be trusted if it is
145 * called under the runtime PM lock of @dev or under conditions in which
146 * runtime PM cannot be either disabled or enabled for @dev and its runtime PM
147 * status cannot change.
148 */
149static inline bool pm_runtime_suspended(struct device *dev)
150{
151 return dev->power.runtime_status == RPM_SUSPENDED
152 && !dev->power.disable_depth;
153}
154
155/**
156 * pm_runtime_active - Check whether or not a device is runtime-active.
157 * @dev: Target device.
158 *
159 * Return %true if runtime PM is disabled for @dev or its runtime PM status is
160 * %RPM_ACTIVE, or %false otherwise.
161 *
162 * Note that the return value of this function can only be trusted if it is
163 * called under the runtime PM lock of @dev or under conditions in which
164 * runtime PM cannot be either disabled or enabled for @dev and its runtime PM
165 * status cannot change.
166 */
167static inline bool pm_runtime_active(struct device *dev)
168{
169 return dev->power.runtime_status == RPM_ACTIVE
170 || dev->power.disable_depth;
171}
172
173/**
174 * pm_runtime_status_suspended - Check if runtime PM status is "suspended".
175 * @dev: Target device.
176 *
177 * Return %true if the runtime PM status of @dev is %RPM_SUSPENDED, or %false
178 * otherwise, regardless of whether or not runtime PM has been enabled for @dev.
179 *
180 * Note that the return value of this function can only be trusted if it is
181 * called under the runtime PM lock of @dev or under conditions in which the
182 * runtime PM status of @dev cannot change.
183 */
184static inline bool pm_runtime_status_suspended(struct device *dev)
185{
186 return dev->power.runtime_status == RPM_SUSPENDED;
187}
188
189/**
190 * pm_runtime_enabled - Check if runtime PM is enabled.
191 * @dev: Target device.
192 *
193 * Return %true if runtime PM is enabled for @dev or %false otherwise.
194 *
195 * Note that the return value of this function can only be trusted if it is
196 * called under the runtime PM lock of @dev or under conditions in which
197 * runtime PM cannot be either disabled or enabled for @dev.
198 */
199static inline bool pm_runtime_enabled(struct device *dev)
200{
201 return !dev->power.disable_depth;
202}
203
204/**
205 * pm_runtime_blocked - Check if runtime PM enabling is blocked.
206 * @dev: Target device.
207 *
208 * Do not call this function outside system suspend/resume code paths.
209 */
210static inline bool pm_runtime_blocked(struct device *dev)
211{
212 return dev->power.last_status == RPM_BLOCKED;
213}
214
215/**
216 * pm_runtime_has_no_callbacks - Check if runtime PM callbacks may be present.
217 * @dev: Target device.
218 *
219 * Return %true if @dev is a special device without runtime PM callbacks or
220 * %false otherwise.
221 */
222static inline bool pm_runtime_has_no_callbacks(struct device *dev)
223{
224 return dev->power.no_callbacks;
225}
226
227/**
228 * pm_runtime_mark_last_busy - Update the last access time of a device.
229 * @dev: Target device.
230 *
231 * Update the last access time of @dev used by the runtime PM autosuspend
232 * mechanism to the current time as returned by ktime_get_mono_fast_ns().
233 */
234static inline void pm_runtime_mark_last_busy(struct device *dev)
235{
236 WRITE_ONCE(dev->power.last_busy, ktime_get_mono_fast_ns());
237}
238
239/**
240 * pm_runtime_is_irq_safe - Check if runtime PM can work in interrupt context.
241 * @dev: Target device.
242 *
243 * Return %true if @dev has been marked as an "IRQ-safe" device (with respect
244 * to runtime PM), in which case its runtime PM callabcks can be expected to
245 * work correctly when invoked from interrupt handlers.
246 */
247static inline bool pm_runtime_is_irq_safe(struct device *dev)
248{
249 return dev->power.irq_safe;
250}
251
252extern u64 pm_runtime_suspended_time(struct device *dev);
253
254#else /* !CONFIG_PM */
255
256static inline bool queue_pm_work(struct work_struct *work) { return false; }
257
258static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
259static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
260static inline bool pm_runtime_need_not_resume(struct device *dev) {return true; }
261static inline int pm_runtime_force_suspend(struct device *dev) { return 0; }
262static inline int pm_runtime_force_resume(struct device *dev) { return 0; }
263
264static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
265{
266 return -ENOSYS;
267}
268static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
269{
270 return -ENOSYS;
271}
272static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
273{
274 return 1;
275}
276static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
277{
278 return -ENOSYS;
279}
280static inline int pm_runtime_get_if_in_use(struct device *dev)
281{
282 return -EINVAL;
283}
284static inline int pm_runtime_get_if_active(struct device *dev)
285{
286 return -EINVAL;
287}
288static inline int __pm_runtime_set_status(struct device *dev,
289 unsigned int status) { return 0; }
290static inline int pm_runtime_barrier(struct device *dev) { return 0; }
291static inline bool pm_runtime_block_if_disabled(struct device *dev) { return true; }
292static inline void pm_runtime_unblock(struct device *dev) {}
293static inline void pm_runtime_enable(struct device *dev) {}
294static inline void __pm_runtime_disable(struct device *dev, bool c) {}
295static inline bool pm_runtime_blocked(struct device *dev) { return true; }
296static inline void pm_runtime_allow(struct device *dev) {}
297static inline void pm_runtime_forbid(struct device *dev) {}
298
299static inline int devm_pm_runtime_set_active_enabled(struct device *dev) { return 0; }
300static inline int devm_pm_runtime_enable(struct device *dev) { return 0; }
301static inline int devm_pm_runtime_get_noresume(struct device *dev) { return 0; }
302
303static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
304static inline void pm_runtime_get_noresume(struct device *dev) {}
305static inline void pm_runtime_put_noidle(struct device *dev) {}
306static inline bool pm_runtime_suspended(struct device *dev) { return false; }
307static inline bool pm_runtime_active(struct device *dev) { return true; }
308static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
309static inline bool pm_runtime_enabled(struct device *dev) { return false; }
310
311static inline void pm_runtime_no_callbacks(struct device *dev) {}
312static inline void pm_runtime_irq_safe(struct device *dev) {}
313static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
314
315static inline bool pm_runtime_has_no_callbacks(struct device *dev) { return false; }
316static inline void pm_runtime_mark_last_busy(struct device *dev) {}
317static inline void __pm_runtime_use_autosuspend(struct device *dev,
318 bool use) {}
319static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
320 int delay) {}
321static inline u64 pm_runtime_autosuspend_expiration(
322 struct device *dev) { return 0; }
323static inline void pm_runtime_set_memalloc_noio(struct device *dev,
324 bool enable){}
325static inline void pm_runtime_get_suppliers(struct device *dev) {}
326static inline void pm_runtime_put_suppliers(struct device *dev) {}
327static inline void pm_runtime_new_link(struct device *dev) {}
328static inline void pm_runtime_drop_link(struct device_link *link) {}
329static inline void pm_runtime_release_supplier(struct device_link *link) {}
330
331#endif /* !CONFIG_PM */
332
333/**
334 * pm_runtime_idle - Conditionally set up autosuspend of a device or suspend it.
335 * @dev: Target device.
336 *
337 * Invoke the "idle check" callback of @dev and, depending on its return value,
338 * set up autosuspend of @dev or suspend it (depending on whether or not
339 * autosuspend has been enabled for it).
340 */
341static inline int pm_runtime_idle(struct device *dev)
342{
343 return __pm_runtime_idle(dev, 0);
344}
345
346/**
347 * pm_runtime_suspend - Suspend a device synchronously.
348 * @dev: Target device.
349 */
350static inline int pm_runtime_suspend(struct device *dev)
351{
352 return __pm_runtime_suspend(dev, 0);
353}
354
355/**
356 * pm_runtime_autosuspend - Set up autosuspend of a device or suspend it.
357 * @dev: Target device.
358 *
359 * Set up autosuspend of @dev or suspend it (depending on whether or not
360 * autosuspend is enabled for it) without engaging its "idle check" callback.
361 */
362static inline int pm_runtime_autosuspend(struct device *dev)
363{
364 return __pm_runtime_suspend(dev, RPM_AUTO);
365}
366
367/**
368 * pm_runtime_resume - Resume a device synchronously.
369 * @dev: Target device.
370 */
371static inline int pm_runtime_resume(struct device *dev)
372{
373 return __pm_runtime_resume(dev, 0);
374}
375
376/**
377 * pm_request_idle - Queue up "idle check" execution for a device.
378 * @dev: Target device.
379 *
380 * Queue up a work item to run an equivalent of pm_runtime_idle() for @dev
381 * asynchronously.
382 */
383static inline int pm_request_idle(struct device *dev)
384{
385 return __pm_runtime_idle(dev, RPM_ASYNC);
386}
387
388/**
389 * pm_request_resume - Queue up runtime-resume of a device.
390 * @dev: Target device.
391 */
392static inline int pm_request_resume(struct device *dev)
393{
394 return __pm_runtime_resume(dev, RPM_ASYNC);
395}
396
397/**
398 * pm_request_autosuspend - Queue up autosuspend of a device.
399 * @dev: Target device.
400 *
401 * Queue up a work item to run an equivalent pm_runtime_autosuspend() for @dev
402 * asynchronously.
403 */
404static inline int pm_request_autosuspend(struct device *dev)
405{
406 return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO);
407}
408
409/**
410 * pm_runtime_get - Bump up usage counter and queue up resume of a device.
411 * @dev: Target device.
412 *
413 * Bump up the runtime PM usage counter of @dev and queue up a work item to
414 * carry out runtime-resume of it.
415 */
416static inline int pm_runtime_get(struct device *dev)
417{
418 return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC);
419}
420
421/**
422 * pm_runtime_get_sync - Bump up usage counter of a device and resume it.
423 * @dev: Target device.
424 *
425 * Bump up the runtime PM usage counter of @dev and carry out runtime-resume of
426 * it synchronously.
427 *
428 * The possible return values of this function are the same as for
429 * pm_runtime_resume() and the runtime PM usage counter of @dev remains
430 * incremented in all cases, even if it returns an error code.
431 * Consider using pm_runtime_resume_and_get() instead of it, especially
432 * if its return value is checked by the caller, as this is likely to result
433 * in cleaner code.
434 */
435static inline int pm_runtime_get_sync(struct device *dev)
436{
437 return __pm_runtime_resume(dev, RPM_GET_PUT);
438}
439
440/**
441 * pm_runtime_resume_and_get - Bump up usage counter of a device and resume it.
442 * @dev: Target device.
443 *
444 * Resume @dev synchronously and if that is successful, increment its runtime
445 * PM usage counter. Return 0 if the runtime PM usage counter of @dev has been
446 * incremented or a negative error code otherwise.
447 */
448static inline int pm_runtime_resume_and_get(struct device *dev)
449{
450 int ret;
451
452 ret = __pm_runtime_resume(dev, RPM_GET_PUT);
453 if (ret < 0) {
454 pm_runtime_put_noidle(dev);
455 return ret;
456 }
457
458 return 0;
459}
460
461/**
462 * pm_runtime_put - Drop device usage counter and queue up "idle check" if 0.
463 * @dev: Target device.
464 *
465 * Decrement the runtime PM usage counter of @dev and if it turns out to be
466 * equal to 0, queue up a work item for @dev like in pm_request_idle().
467 */
468static inline int pm_runtime_put(struct device *dev)
469{
470 return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
471}
472
473DEFINE_FREE(pm_runtime_put, struct device *, if (_T) pm_runtime_put(_T))
474
475/**
476 * __pm_runtime_put_autosuspend - Drop device usage counter and queue autosuspend if 0.
477 * @dev: Target device.
478 *
479 * Decrement the runtime PM usage counter of @dev and if it turns out to be
480 * equal to 0, queue up a work item for @dev like in pm_request_autosuspend().
481 */
482static inline int __pm_runtime_put_autosuspend(struct device *dev)
483{
484 return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
485}
486
487/**
488 * pm_runtime_put_autosuspend - Drop device usage counter and queue autosuspend 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, queue up a work item for @dev like in pm_request_autosuspend().
493 */
494static inline int pm_runtime_put_autosuspend(struct device *dev)
495{
496 return __pm_runtime_suspend(dev,
497 RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
498}
499
500/**
501 * pm_runtime_put_sync - Drop device usage counter and run "idle check" if 0.
502 * @dev: Target device.
503 *
504 * Decrement the runtime PM usage counter of @dev and if it turns out to be
505 * equal to 0, invoke the "idle check" callback of @dev and, depending on its
506 * return value, set up autosuspend of @dev or suspend it (depending on whether
507 * or not autosuspend has been enabled for it).
508 *
509 * The possible return values of this function are the same as for
510 * pm_runtime_idle() and the runtime PM usage counter of @dev remains
511 * decremented in all cases, even if it returns an error code.
512 */
513static inline int pm_runtime_put_sync(struct device *dev)
514{
515 return __pm_runtime_idle(dev, RPM_GET_PUT);
516}
517
518/**
519 * pm_runtime_put_sync_suspend - Drop device usage counter and suspend if 0.
520 * @dev: Target device.
521 *
522 * Decrement the runtime PM usage counter of @dev and if it turns out to be
523 * equal to 0, carry out runtime-suspend of @dev synchronously.
524 *
525 * The possible return values of this function are the same as for
526 * pm_runtime_suspend() and the runtime PM usage counter of @dev remains
527 * decremented in all cases, even if it returns an error code.
528 */
529static inline int pm_runtime_put_sync_suspend(struct device *dev)
530{
531 return __pm_runtime_suspend(dev, RPM_GET_PUT);
532}
533
534/**
535 * pm_runtime_put_sync_autosuspend - Drop device usage counter and autosuspend if 0.
536 * @dev: Target device.
537 *
538 * Decrement the runtime PM usage counter of @dev and if it turns out to be
539 * equal to 0, set up autosuspend of @dev or suspend it synchronously (depending
540 * on whether or not autosuspend has been enabled for it).
541 *
542 * The possible return values of this function are the same as for
543 * pm_runtime_autosuspend() and the runtime PM usage counter of @dev remains
544 * decremented in all cases, even if it returns an error code.
545 */
546static inline int pm_runtime_put_sync_autosuspend(struct device *dev)
547{
548 return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO);
549}
550
551/**
552 * pm_runtime_set_active - Set runtime PM status to "active".
553 * @dev: Target device.
554 *
555 * Set the runtime PM status of @dev to %RPM_ACTIVE and ensure that dependencies
556 * of it will be taken into account.
557 *
558 * It is not valid to call this function for devices with runtime PM enabled.
559 */
560static inline int pm_runtime_set_active(struct device *dev)
561{
562 return __pm_runtime_set_status(dev, RPM_ACTIVE);
563}
564
565/**
566 * pm_runtime_set_suspended - Set runtime PM status to "suspended".
567 * @dev: Target device.
568 *
569 * Set the runtime PM status of @dev to %RPM_SUSPENDED and ensure that
570 * dependencies of it will be taken into account.
571 *
572 * It is not valid to call this function for devices with runtime PM enabled.
573 */
574static inline int pm_runtime_set_suspended(struct device *dev)
575{
576 return __pm_runtime_set_status(dev, RPM_SUSPENDED);
577}
578
579/**
580 * pm_runtime_disable - Disable runtime PM for a device.
581 * @dev: Target device.
582 *
583 * Prevent the runtime PM framework from working with @dev by incrementing its
584 * "disable" counter.
585 *
586 * If the counter is zero when this function runs and there is a pending runtime
587 * resume request for @dev, it will be resumed. If the counter is still zero at
588 * that point, all of the pending runtime PM requests for @dev will be canceled
589 * and all runtime PM operations in progress involving it will be waited for to
590 * complete.
591 *
592 * For each invocation of this function for @dev, there must be a matching
593 * pm_runtime_enable() call, so that runtime PM is eventually enabled for it
594 * again.
595 */
596static inline void pm_runtime_disable(struct device *dev)
597{
598 __pm_runtime_disable(dev, true);
599}
600
601/**
602 * pm_runtime_use_autosuspend - Allow autosuspend to be used for a device.
603 * @dev: Target device.
604 *
605 * Allow the runtime PM autosuspend mechanism to be used for @dev whenever
606 * requested (or "autosuspend" will be handled as direct runtime-suspend for
607 * it).
608 *
609 * NOTE: It's important to undo this with pm_runtime_dont_use_autosuspend()
610 * at driver exit time unless your driver initially enabled pm_runtime
611 * with devm_pm_runtime_enable() (which handles it for you).
612 */
613static inline void pm_runtime_use_autosuspend(struct device *dev)
614{
615 __pm_runtime_use_autosuspend(dev, true);
616}
617
618/**
619 * pm_runtime_dont_use_autosuspend - Prevent autosuspend from being used.
620 * @dev: Target device.
621 *
622 * Prevent the runtime PM autosuspend mechanism from being used for @dev which
623 * means that "autosuspend" will be handled as direct runtime-suspend for it
624 * going forward.
625 */
626static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
627{
628 __pm_runtime_use_autosuspend(dev, false);
629}
630
631#endif