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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
18#define RPM_ASYNC 0x01
19#define RPM_NOWAIT 0x02
20
21#define RPM_GET_PUT 0x04
22
23#define RPM_AUTO 0x08
24
25#ifdef CONFIG_PM
26extern struct workqueue_struct *pm_wq;
27
28static inline bool queue_pm_work(struct work_struct *work)
29{
30 return queue_work(pm_wq, work);
31}
32
33extern int pm_generic_runtime_suspend(struct device *dev);
34extern int pm_generic_runtime_resume(struct device *dev);
35extern int pm_runtime_force_suspend(struct device *dev);
36extern int pm_runtime_force_resume(struct device *dev);
37
38extern int __pm_runtime_idle(struct device *dev, int rpmflags);
39extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
40extern int __pm_runtime_resume(struct device *dev, int rpmflags);
41extern int pm_runtime_get_if_active(struct device *dev, bool ign_usage_count);
42extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
43extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
44extern int pm_runtime_barrier(struct device *dev);
45extern void pm_runtime_enable(struct device *dev);
46extern void __pm_runtime_disable(struct device *dev, bool check_resume);
47extern void pm_runtime_allow(struct device *dev);
48extern void pm_runtime_forbid(struct device *dev);
49extern void pm_runtime_no_callbacks(struct device *dev);
50extern void pm_runtime_irq_safe(struct device *dev);
51extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
52extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay);
53extern u64 pm_runtime_autosuspend_expiration(struct device *dev);
54extern void pm_runtime_update_max_time_suspended(struct device *dev,
55 s64 delta_ns);
56extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
57extern void pm_runtime_get_suppliers(struct device *dev);
58extern void pm_runtime_put_suppliers(struct device *dev);
59extern void pm_runtime_new_link(struct device *dev);
60extern void pm_runtime_drop_link(struct device_link *link);
61
62extern int devm_pm_runtime_enable(struct device *dev);
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71static inline int pm_runtime_get_if_in_use(struct device *dev)
72{
73 return pm_runtime_get_if_active(dev, false);
74}
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85static inline void pm_suspend_ignore_children(struct device *dev, bool enable)
86{
87 dev->power.ignore_children = enable;
88}
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94static inline void pm_runtime_get_noresume(struct device *dev)
95{
96 atomic_inc(&dev->power.usage_count);
97}
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105static inline void pm_runtime_put_noidle(struct device *dev)
106{
107 atomic_add_unless(&dev->power.usage_count, -1, 0);
108}
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122static inline bool pm_runtime_suspended(struct device *dev)
123{
124 return dev->power.runtime_status == RPM_SUSPENDED
125 && !dev->power.disable_depth;
126}
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140static inline bool pm_runtime_active(struct device *dev)
141{
142 return dev->power.runtime_status == RPM_ACTIVE
143 || dev->power.disable_depth;
144}
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157static inline bool pm_runtime_status_suspended(struct device *dev)
158{
159 return dev->power.runtime_status == RPM_SUSPENDED;
160}
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172static inline bool pm_runtime_enabled(struct device *dev)
173{
174 return !dev->power.disable_depth;
175}
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184static inline bool pm_runtime_has_no_callbacks(struct device *dev)
185{
186 return dev->power.no_callbacks;
187}
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195
196static inline void pm_runtime_mark_last_busy(struct device *dev)
197{
198 WRITE_ONCE(dev->power.last_busy, ktime_get_mono_fast_ns());
199}
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209static inline bool pm_runtime_is_irq_safe(struct device *dev)
210{
211 return dev->power.irq_safe;
212}
213
214extern u64 pm_runtime_suspended_time(struct device *dev);
215
216#else
217
218static inline bool queue_pm_work(struct work_struct *work) { return false; }
219
220static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
221static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
222static inline int pm_runtime_force_suspend(struct device *dev) { return 0; }
223static inline int pm_runtime_force_resume(struct device *dev) { return 0; }
224
225static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
226{
227 return -ENOSYS;
228}
229static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
230{
231 return -ENOSYS;
232}
233static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
234{
235 return 1;
236}
237static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
238{
239 return -ENOSYS;
240}
241static inline int pm_runtime_get_if_in_use(struct device *dev)
242{
243 return -EINVAL;
244}
245static inline int pm_runtime_get_if_active(struct device *dev,
246 bool ign_usage_count)
247{
248 return -EINVAL;
249}
250static inline int __pm_runtime_set_status(struct device *dev,
251 unsigned int status) { return 0; }
252static inline int pm_runtime_barrier(struct device *dev) { return 0; }
253static inline void pm_runtime_enable(struct device *dev) {}
254static inline void __pm_runtime_disable(struct device *dev, bool c) {}
255static inline void pm_runtime_allow(struct device *dev) {}
256static inline void pm_runtime_forbid(struct device *dev) {}
257
258static inline int devm_pm_runtime_enable(struct device *dev) { return 0; }
259
260static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
261static inline void pm_runtime_get_noresume(struct device *dev) {}
262static inline void pm_runtime_put_noidle(struct device *dev) {}
263static inline bool pm_runtime_suspended(struct device *dev) { return false; }
264static inline bool pm_runtime_active(struct device *dev) { return true; }
265static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
266static inline bool pm_runtime_enabled(struct device *dev) { return false; }
267
268static inline void pm_runtime_no_callbacks(struct device *dev) {}
269static inline void pm_runtime_irq_safe(struct device *dev) {}
270static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
271
272static inline bool pm_runtime_has_no_callbacks(struct device *dev) { return false; }
273static inline void pm_runtime_mark_last_busy(struct device *dev) {}
274static inline void __pm_runtime_use_autosuspend(struct device *dev,
275 bool use) {}
276static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
277 int delay) {}
278static inline u64 pm_runtime_autosuspend_expiration(
279 struct device *dev) { return 0; }
280static inline void pm_runtime_set_memalloc_noio(struct device *dev,
281 bool enable){}
282static inline void pm_runtime_get_suppliers(struct device *dev) {}
283static inline void pm_runtime_put_suppliers(struct device *dev) {}
284static inline void pm_runtime_new_link(struct device *dev) {}
285static inline void pm_runtime_drop_link(struct device_link *link) {}
286
287#endif
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297static inline int pm_runtime_idle(struct device *dev)
298{
299 return __pm_runtime_idle(dev, 0);
300}
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306static inline int pm_runtime_suspend(struct device *dev)
307{
308 return __pm_runtime_suspend(dev, 0);
309}
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318static inline int pm_runtime_autosuspend(struct device *dev)
319{
320 return __pm_runtime_suspend(dev, RPM_AUTO);
321}
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327static inline int pm_runtime_resume(struct device *dev)
328{
329 return __pm_runtime_resume(dev, 0);
330}
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339static inline int pm_request_idle(struct device *dev)
340{
341 return __pm_runtime_idle(dev, RPM_ASYNC);
342}
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348static inline int pm_request_resume(struct device *dev)
349{
350 return __pm_runtime_resume(dev, RPM_ASYNC);
351}
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360static inline int pm_request_autosuspend(struct device *dev)
361{
362 return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO);
363}
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372static inline int pm_runtime_get(struct device *dev)
373{
374 return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC);
375}
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391static inline int pm_runtime_get_sync(struct device *dev)
392{
393 return __pm_runtime_resume(dev, RPM_GET_PUT);
394}
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404static inline int pm_runtime_resume_and_get(struct device *dev)
405{
406 int ret;
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408 ret = __pm_runtime_resume(dev, RPM_GET_PUT);
409 if (ret < 0) {
410 pm_runtime_put_noidle(dev);
411 return ret;
412 }
413
414 return 0;
415}
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424static inline int pm_runtime_put(struct device *dev)
425{
426 return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
427}
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436static inline int pm_runtime_put_autosuspend(struct device *dev)
437{
438 return __pm_runtime_suspend(dev,
439 RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
440}
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455static inline int pm_runtime_put_sync(struct device *dev)
456{
457 return __pm_runtime_idle(dev, RPM_GET_PUT);
458}
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471static inline int pm_runtime_put_sync_suspend(struct device *dev)
472{
473 return __pm_runtime_suspend(dev, RPM_GET_PUT);
474}
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488static inline int pm_runtime_put_sync_autosuspend(struct device *dev)
489{
490 return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO);
491}
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502static inline int pm_runtime_set_active(struct device *dev)
503{
504 return __pm_runtime_set_status(dev, RPM_ACTIVE);
505}
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516static inline int pm_runtime_set_suspended(struct device *dev)
517{
518 return __pm_runtime_set_status(dev, RPM_SUSPENDED);
519}
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531static inline void pm_runtime_disable(struct device *dev)
532{
533 __pm_runtime_disable(dev, true);
534}
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544static inline void pm_runtime_use_autosuspend(struct device *dev)
545{
546 __pm_runtime_use_autosuspend(dev, true);
547}
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557static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
558{
559 __pm_runtime_use_autosuspend(dev, false);
560}
561
562#endif
563