Lines Matching refs:dev
21 static pm_callback_t __rpm_get_callback(struct device *dev, size_t cb_offset) in __rpm_get_callback() argument
26 if (dev->pm_domain) in __rpm_get_callback()
27 ops = &dev->pm_domain->ops; in __rpm_get_callback()
28 else if (dev->type && dev->type->pm) in __rpm_get_callback()
29 ops = dev->type->pm; in __rpm_get_callback()
30 else if (dev->class && dev->class->pm) in __rpm_get_callback()
31 ops = dev->class->pm; in __rpm_get_callback()
32 else if (dev->bus && dev->bus->pm) in __rpm_get_callback()
33 ops = dev->bus->pm; in __rpm_get_callback()
42 if (!cb && dev->driver && dev->driver->pm) in __rpm_get_callback()
43 cb = *(pm_callback_t *)((void *)dev->driver->pm + cb_offset); in __rpm_get_callback()
48 #define RPM_GET_CALLBACK(dev, callback) \ argument
49 __rpm_get_callback(dev, offsetof(struct dev_pm_ops, callback))
51 static int rpm_resume(struct device *dev, int rpmflags);
52 static int rpm_suspend(struct device *dev, int rpmflags);
65 static void update_pm_runtime_accounting(struct device *dev) in update_pm_runtime_accounting() argument
69 if (dev->power.disable_depth > 0) in update_pm_runtime_accounting()
72 last = dev->power.accounting_timestamp; in update_pm_runtime_accounting()
75 dev->power.accounting_timestamp = now; in update_pm_runtime_accounting()
87 if (dev->power.runtime_status == RPM_SUSPENDED) in update_pm_runtime_accounting()
88 dev->power.suspended_time += delta; in update_pm_runtime_accounting()
90 dev->power.active_time += delta; in update_pm_runtime_accounting()
93 static void __update_runtime_status(struct device *dev, enum rpm_status status) in __update_runtime_status() argument
95 update_pm_runtime_accounting(dev); in __update_runtime_status()
96 trace_rpm_status(dev, status); in __update_runtime_status()
97 dev->power.runtime_status = status; in __update_runtime_status()
100 static u64 rpm_get_accounted_time(struct device *dev, bool suspended) in rpm_get_accounted_time() argument
105 spin_lock_irqsave(&dev->power.lock, flags); in rpm_get_accounted_time()
107 update_pm_runtime_accounting(dev); in rpm_get_accounted_time()
108 time = suspended ? dev->power.suspended_time : dev->power.active_time; in rpm_get_accounted_time()
110 spin_unlock_irqrestore(&dev->power.lock, flags); in rpm_get_accounted_time()
115 u64 pm_runtime_active_time(struct device *dev) in pm_runtime_active_time() argument
117 return rpm_get_accounted_time(dev, false); in pm_runtime_active_time()
120 u64 pm_runtime_suspended_time(struct device *dev) in pm_runtime_suspended_time() argument
122 return rpm_get_accounted_time(dev, true); in pm_runtime_suspended_time()
130 static void pm_runtime_deactivate_timer(struct device *dev) in pm_runtime_deactivate_timer() argument
132 if (dev->power.timer_expires > 0) { in pm_runtime_deactivate_timer()
133 hrtimer_try_to_cancel(&dev->power.suspend_timer); in pm_runtime_deactivate_timer()
134 dev->power.timer_expires = 0; in pm_runtime_deactivate_timer()
142 static void pm_runtime_cancel_pending(struct device *dev) in pm_runtime_cancel_pending() argument
144 pm_runtime_deactivate_timer(dev); in pm_runtime_cancel_pending()
149 dev->power.request = RPM_REQ_NONE; in pm_runtime_cancel_pending()
164 u64 pm_runtime_autosuspend_expiration(struct device *dev) in pm_runtime_autosuspend_expiration() argument
169 if (!dev->power.use_autosuspend) in pm_runtime_autosuspend_expiration()
172 autosuspend_delay = READ_ONCE(dev->power.autosuspend_delay); in pm_runtime_autosuspend_expiration()
176 expires = READ_ONCE(dev->power.last_busy); in pm_runtime_autosuspend_expiration()
185 static int dev_memalloc_noio(struct device *dev, void *data) in dev_memalloc_noio() argument
187 return dev->power.memalloc_noio; in dev_memalloc_noio()
218 void pm_runtime_set_memalloc_noio(struct device *dev, bool enable) in pm_runtime_set_memalloc_noio() argument
227 spin_lock_irq(&dev->power.lock); in pm_runtime_set_memalloc_noio()
228 enabled = dev->power.memalloc_noio; in pm_runtime_set_memalloc_noio()
229 dev->power.memalloc_noio = enable; in pm_runtime_set_memalloc_noio()
230 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_memalloc_noio()
239 dev = dev->parent; in pm_runtime_set_memalloc_noio()
246 if (!dev || (!enable && in pm_runtime_set_memalloc_noio()
247 device_for_each_child(dev, NULL, in pm_runtime_set_memalloc_noio()
259 static int rpm_check_suspend_allowed(struct device *dev) in rpm_check_suspend_allowed() argument
263 if (dev->power.runtime_error) in rpm_check_suspend_allowed()
265 else if (dev->power.disable_depth > 0) in rpm_check_suspend_allowed()
267 else if (atomic_read(&dev->power.usage_count) > 0) in rpm_check_suspend_allowed()
269 else if (!dev->power.ignore_children && in rpm_check_suspend_allowed()
270 atomic_read(&dev->power.child_count)) in rpm_check_suspend_allowed()
274 else if ((dev->power.deferred_resume in rpm_check_suspend_allowed()
275 && dev->power.runtime_status == RPM_SUSPENDING) in rpm_check_suspend_allowed()
276 || (dev->power.request_pending in rpm_check_suspend_allowed()
277 && dev->power.request == RPM_REQ_RESUME)) in rpm_check_suspend_allowed()
279 else if (__dev_pm_qos_resume_latency(dev) == 0) in rpm_check_suspend_allowed()
281 else if (dev->power.runtime_status == RPM_SUSPENDED) in rpm_check_suspend_allowed()
287 static int rpm_get_suppliers(struct device *dev) in rpm_get_suppliers() argument
291 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in rpm_get_suppliers()
330 static void __rpm_put_suppliers(struct device *dev, bool try_to_suspend) in __rpm_put_suppliers() argument
334 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in __rpm_put_suppliers()
342 static void rpm_put_suppliers(struct device *dev) in rpm_put_suppliers() argument
344 __rpm_put_suppliers(dev, true); in rpm_put_suppliers()
347 static void rpm_suspend_suppliers(struct device *dev) in rpm_suspend_suppliers() argument
352 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in rpm_suspend_suppliers()
364 static int __rpm_callback(int (*cb)(struct device *), struct device *dev) in __rpm_callback() argument
365 __releases(&dev->power.lock) __acquires(&dev->power.lock) in __rpm_callback()
368 bool use_links = dev->power.links_count > 0; in __rpm_callback()
370 if (dev->power.irq_safe) { in __rpm_callback()
371 spin_unlock(&dev->power.lock); in __rpm_callback()
373 spin_unlock_irq(&dev->power.lock); in __rpm_callback()
382 if (use_links && dev->power.runtime_status == RPM_RESUMING) { in __rpm_callback()
385 retval = rpm_get_suppliers(dev); in __rpm_callback()
387 rpm_put_suppliers(dev); in __rpm_callback()
396 retval = cb(dev); in __rpm_callback()
398 if (dev->power.irq_safe) { in __rpm_callback()
399 spin_lock(&dev->power.lock); in __rpm_callback()
409 && ((dev->power.runtime_status == RPM_SUSPENDING && !retval) in __rpm_callback()
410 || (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
413 __rpm_put_suppliers(dev, false); in __rpm_callback()
419 spin_lock_irq(&dev->power.lock); in __rpm_callback()
438 static int rpm_idle(struct device *dev, int rpmflags) in rpm_idle() argument
443 trace_rpm_idle_rcuidle(dev, rpmflags); in rpm_idle()
444 retval = rpm_check_suspend_allowed(dev); in rpm_idle()
449 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
456 else if (dev->power.request_pending && in rpm_idle()
457 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
461 else if (dev->power.idle_notification) in rpm_idle()
467 dev->power.request = RPM_REQ_NONE; in rpm_idle()
469 callback = RPM_GET_CALLBACK(dev, runtime_idle); in rpm_idle()
472 if (!callback || dev->power.no_callbacks) in rpm_idle()
477 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
478 if (!dev->power.request_pending) { in rpm_idle()
479 dev->power.request_pending = true; in rpm_idle()
480 queue_work(pm_wq, &dev->power.work); in rpm_idle()
482 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0); in rpm_idle()
486 dev->power.idle_notification = true; in rpm_idle()
488 if (dev->power.irq_safe) in rpm_idle()
489 spin_unlock(&dev->power.lock); in rpm_idle()
491 spin_unlock_irq(&dev->power.lock); in rpm_idle()
493 retval = callback(dev); in rpm_idle()
495 if (dev->power.irq_safe) in rpm_idle()
496 spin_lock(&dev->power.lock); in rpm_idle()
498 spin_lock_irq(&dev->power.lock); in rpm_idle()
500 dev->power.idle_notification = false; in rpm_idle()
501 wake_up_all(&dev->power.wait_queue); in rpm_idle()
504 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_idle()
505 return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); in rpm_idle()
513 static int rpm_callback(int (*cb)(struct device *), struct device *dev) in rpm_callback() argument
517 if (dev->power.memalloc_noio) { in rpm_callback()
530 retval = __rpm_callback(cb, dev); in rpm_callback()
533 retval = __rpm_callback(cb, dev); in rpm_callback()
536 dev->power.runtime_error = retval; in rpm_callback()
561 static int rpm_suspend(struct device *dev, int rpmflags) in rpm_suspend() argument
562 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
568 trace_rpm_suspend_rcuidle(dev, rpmflags); in rpm_suspend()
571 retval = rpm_check_suspend_allowed(dev); in rpm_suspend()
576 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
583 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
584 u64 expires = pm_runtime_autosuspend_expiration(dev); in rpm_suspend()
588 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
597 if (!(dev->power.timer_expires && in rpm_suspend()
598 dev->power.timer_expires <= expires)) { in rpm_suspend()
603 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
606 dev->power.timer_expires = expires; in rpm_suspend()
607 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
612 dev->power.timer_autosuspends = 1; in rpm_suspend()
618 pm_runtime_cancel_pending(dev); in rpm_suspend()
620 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
628 if (dev->power.irq_safe) { in rpm_suspend()
629 spin_unlock(&dev->power.lock); in rpm_suspend()
633 spin_lock(&dev->power.lock); in rpm_suspend()
639 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
641 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
644 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
648 spin_lock_irq(&dev->power.lock); in rpm_suspend()
650 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
654 if (dev->power.no_callbacks) in rpm_suspend()
659 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
661 if (!dev->power.request_pending) { in rpm_suspend()
662 dev->power.request_pending = true; in rpm_suspend()
663 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
668 __update_runtime_status(dev, RPM_SUSPENDING); in rpm_suspend()
670 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in rpm_suspend()
672 dev_pm_enable_wake_irq_check(dev, true); in rpm_suspend()
673 retval = rpm_callback(callback, dev); in rpm_suspend()
677 dev_pm_enable_wake_irq_complete(dev); in rpm_suspend()
680 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_suspend()
681 pm_runtime_deactivate_timer(dev); in rpm_suspend()
683 if (dev->parent) { in rpm_suspend()
684 parent = dev->parent; in rpm_suspend()
687 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
689 if (dev->power.deferred_resume) { in rpm_suspend()
690 dev->power.deferred_resume = false; in rpm_suspend()
691 rpm_resume(dev, 0); in rpm_suspend()
696 if (dev->power.irq_safe) in rpm_suspend()
701 spin_unlock(&dev->power.lock); in rpm_suspend()
707 spin_lock(&dev->power.lock); in rpm_suspend()
710 if (dev->power.links_count > 0) { in rpm_suspend()
711 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
713 rpm_suspend_suppliers(dev); in rpm_suspend()
715 spin_lock_irq(&dev->power.lock); in rpm_suspend()
719 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_suspend()
724 dev_pm_disable_wake_irq_check(dev, true); in rpm_suspend()
725 __update_runtime_status(dev, RPM_ACTIVE); in rpm_suspend()
726 dev->power.deferred_resume = false; in rpm_suspend()
727 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
730 dev->power.runtime_error = 0; in rpm_suspend()
739 pm_runtime_autosuspend_expiration(dev) != 0) in rpm_suspend()
742 pm_runtime_cancel_pending(dev); in rpm_suspend()
764 static int rpm_resume(struct device *dev, int rpmflags) in rpm_resume() argument
765 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
771 trace_rpm_resume_rcuidle(dev, rpmflags); in rpm_resume()
774 if (dev->power.runtime_error) in rpm_resume()
776 else if (dev->power.disable_depth == 1 && dev->power.is_suspended in rpm_resume()
777 && dev->power.runtime_status == RPM_ACTIVE) in rpm_resume()
779 else if (dev->power.disable_depth > 0) in rpm_resume()
790 dev->power.request = RPM_REQ_NONE; in rpm_resume()
791 if (!dev->power.timer_autosuspends) in rpm_resume()
792 pm_runtime_deactivate_timer(dev); in rpm_resume()
794 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
799 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
800 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
804 if (dev->power.runtime_status == RPM_SUSPENDING) in rpm_resume()
805 dev->power.deferred_resume = true; in rpm_resume()
811 if (dev->power.irq_safe) { in rpm_resume()
812 spin_unlock(&dev->power.lock); in rpm_resume()
816 spin_lock(&dev->power.lock); in rpm_resume()
822 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
824 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
825 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
828 spin_unlock_irq(&dev->power.lock); in rpm_resume()
832 spin_lock_irq(&dev->power.lock); in rpm_resume()
834 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
843 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
844 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
845 if (dev->parent->power.disable_depth > 0 in rpm_resume()
846 || dev->parent->power.ignore_children in rpm_resume()
847 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
848 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
849 spin_unlock(&dev->parent->power.lock); in rpm_resume()
853 spin_unlock(&dev->parent->power.lock); in rpm_resume()
858 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
859 if (!dev->power.request_pending) { in rpm_resume()
860 dev->power.request_pending = true; in rpm_resume()
861 queue_work(pm_wq, &dev->power.work); in rpm_resume()
867 if (!parent && dev->parent) { in rpm_resume()
873 parent = dev->parent; in rpm_resume()
874 if (dev->power.irq_safe) in rpm_resume()
876 spin_unlock(&dev->power.lock); in rpm_resume()
893 spin_lock(&dev->power.lock); in rpm_resume()
900 if (dev->power.no_callbacks) in rpm_resume()
903 __update_runtime_status(dev, RPM_RESUMING); in rpm_resume()
905 callback = RPM_GET_CALLBACK(dev, runtime_resume); in rpm_resume()
907 dev_pm_disable_wake_irq_check(dev, false); in rpm_resume()
908 retval = rpm_callback(callback, dev); in rpm_resume()
910 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_resume()
911 pm_runtime_cancel_pending(dev); in rpm_resume()
912 dev_pm_enable_wake_irq_check(dev, false); in rpm_resume()
915 __update_runtime_status(dev, RPM_ACTIVE); in rpm_resume()
916 pm_runtime_mark_last_busy(dev); in rpm_resume()
920 wake_up_all(&dev->power.wait_queue); in rpm_resume()
923 rpm_idle(dev, RPM_ASYNC); in rpm_resume()
926 if (parent && !dev->power.irq_safe) { in rpm_resume()
927 spin_unlock_irq(&dev->power.lock); in rpm_resume()
931 spin_lock_irq(&dev->power.lock); in rpm_resume()
934 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_resume()
948 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work() local
951 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
953 if (!dev->power.request_pending) in pm_runtime_work()
956 req = dev->power.request; in pm_runtime_work()
957 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
958 dev->power.request_pending = false; in pm_runtime_work()
964 rpm_idle(dev, RPM_NOWAIT); in pm_runtime_work()
967 rpm_suspend(dev, RPM_NOWAIT); in pm_runtime_work()
970 rpm_suspend(dev, RPM_NOWAIT | RPM_AUTO); in pm_runtime_work()
973 rpm_resume(dev, RPM_NOWAIT); in pm_runtime_work()
978 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
989 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn() local
993 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
995 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
1001 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
1002 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
1006 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1016 int pm_schedule_suspend(struct device *dev, unsigned int delay) in pm_schedule_suspend() argument
1022 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1025 retval = rpm_suspend(dev, RPM_ASYNC); in pm_schedule_suspend()
1029 retval = rpm_check_suspend_allowed(dev); in pm_schedule_suspend()
1034 pm_runtime_cancel_pending(dev); in pm_schedule_suspend()
1037 dev->power.timer_expires = expires; in pm_schedule_suspend()
1038 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1039 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1042 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1060 int __pm_runtime_idle(struct device *dev, int rpmflags) in __pm_runtime_idle() argument
1066 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_idle()
1067 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_idle()
1072 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1074 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1075 retval = rpm_idle(dev, rpmflags); in __pm_runtime_idle()
1076 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1094 int __pm_runtime_suspend(struct device *dev, int rpmflags) in __pm_runtime_suspend() argument
1100 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_suspend()
1101 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_suspend()
1106 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1108 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1109 retval = rpm_suspend(dev, rpmflags); in __pm_runtime_suspend()
1110 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1127 int __pm_runtime_resume(struct device *dev, int rpmflags) in __pm_runtime_resume() argument
1132 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1133 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1136 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1138 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1139 retval = rpm_resume(dev, rpmflags); in __pm_runtime_resume()
1140 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1168 int pm_runtime_get_if_active(struct device *dev, bool ign_usage_count) in pm_runtime_get_if_active() argument
1173 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1174 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1176 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1180 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1182 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1184 trace_rpm_usage_rcuidle(dev, 0); in pm_runtime_get_if_active()
1185 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1215 int __pm_runtime_set_status(struct device *dev, unsigned int status) in __pm_runtime_set_status() argument
1217 struct device *parent = dev->parent; in __pm_runtime_set_status()
1224 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1230 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1231 dev->power.disable_depth++; in __pm_runtime_set_status()
1235 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1249 error = rpm_get_suppliers(dev); in __pm_runtime_set_status()
1256 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1258 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1275 dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n", in __pm_runtime_set_status()
1276 dev_name(dev), in __pm_runtime_set_status()
1279 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1292 __update_runtime_status(dev, status); in __pm_runtime_set_status()
1294 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1297 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1305 rpm_put_suppliers(dev); in __pm_runtime_set_status()
1310 pm_runtime_enable(dev); in __pm_runtime_set_status()
1325 static void __pm_runtime_barrier(struct device *dev) in __pm_runtime_barrier() argument
1327 pm_runtime_deactivate_timer(dev); in __pm_runtime_barrier()
1329 if (dev->power.request_pending) { in __pm_runtime_barrier()
1330 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1331 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1333 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1335 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1336 dev->power.request_pending = false; in __pm_runtime_barrier()
1339 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1340 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1341 || dev->power.idle_notification) { in __pm_runtime_barrier()
1346 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1348 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1349 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1350 && !dev->power.idle_notification) in __pm_runtime_barrier()
1352 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1356 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1358 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1376 int pm_runtime_barrier(struct device *dev) in pm_runtime_barrier() argument
1380 pm_runtime_get_noresume(dev); in pm_runtime_barrier()
1381 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1383 if (dev->power.request_pending in pm_runtime_barrier()
1384 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1385 rpm_resume(dev, 0); in pm_runtime_barrier()
1389 __pm_runtime_barrier(dev); in pm_runtime_barrier()
1391 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1392 pm_runtime_put_noidle(dev); in pm_runtime_barrier()
1412 void __pm_runtime_disable(struct device *dev, bool check_resume) in __pm_runtime_disable() argument
1414 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1416 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1417 dev->power.disable_depth++; in __pm_runtime_disable()
1426 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1427 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1432 pm_runtime_get_noresume(dev); in __pm_runtime_disable()
1434 rpm_resume(dev, 0); in __pm_runtime_disable()
1436 pm_runtime_put_noidle(dev); in __pm_runtime_disable()
1440 update_pm_runtime_accounting(dev); in __pm_runtime_disable()
1442 if (!dev->power.disable_depth++) in __pm_runtime_disable()
1443 __pm_runtime_barrier(dev); in __pm_runtime_disable()
1446 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1454 void pm_runtime_enable(struct device *dev) in pm_runtime_enable() argument
1458 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1460 if (dev->power.disable_depth > 0) { in pm_runtime_enable()
1461 dev->power.disable_depth--; in pm_runtime_enable()
1464 if (!dev->power.disable_depth) in pm_runtime_enable()
1465 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1467 dev_warn(dev, "Unbalanced %s!\n", __func__); in pm_runtime_enable()
1470 WARN(!dev->power.disable_depth && in pm_runtime_enable()
1471 dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1472 !dev->power.ignore_children && in pm_runtime_enable()
1473 atomic_read(&dev->power.child_count) > 0, in pm_runtime_enable()
1475 dev_name(dev)); in pm_runtime_enable()
1477 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1495 int devm_pm_runtime_enable(struct device *dev) in devm_pm_runtime_enable() argument
1497 pm_runtime_enable(dev); in devm_pm_runtime_enable()
1499 return devm_add_action_or_reset(dev, pm_runtime_disable_action, dev); in devm_pm_runtime_enable()
1511 void pm_runtime_forbid(struct device *dev) in pm_runtime_forbid() argument
1513 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1514 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1517 dev->power.runtime_auto = false; in pm_runtime_forbid()
1518 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1519 rpm_resume(dev, 0); in pm_runtime_forbid()
1522 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1532 void pm_runtime_allow(struct device *dev) in pm_runtime_allow() argument
1534 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1535 if (dev->power.runtime_auto) in pm_runtime_allow()
1538 dev->power.runtime_auto = true; in pm_runtime_allow()
1539 if (atomic_dec_and_test(&dev->power.usage_count)) in pm_runtime_allow()
1540 rpm_idle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1542 trace_rpm_usage_rcuidle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1545 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1557 void pm_runtime_no_callbacks(struct device *dev) in pm_runtime_no_callbacks() argument
1559 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1560 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1561 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1562 if (device_is_registered(dev)) in pm_runtime_no_callbacks()
1563 rpm_sysfs_remove(dev); in pm_runtime_no_callbacks()
1578 void pm_runtime_irq_safe(struct device *dev) in pm_runtime_irq_safe() argument
1580 if (dev->parent) in pm_runtime_irq_safe()
1581 pm_runtime_get_sync(dev->parent); in pm_runtime_irq_safe()
1582 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1583 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1584 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1599 static void update_autosuspend(struct device *dev, int old_delay, int old_use) in update_autosuspend() argument
1601 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1604 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1608 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1609 rpm_resume(dev, 0); in update_autosuspend()
1611 trace_rpm_usage_rcuidle(dev, 0); in update_autosuspend()
1620 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1623 rpm_idle(dev, RPM_AUTO); in update_autosuspend()
1636 void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) in pm_runtime_set_autosuspend_delay() argument
1640 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1641 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1642 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1643 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1644 update_autosuspend(dev, old_delay, old_use); in pm_runtime_set_autosuspend_delay()
1645 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1657 void __pm_runtime_use_autosuspend(struct device *dev, bool use) in __pm_runtime_use_autosuspend() argument
1661 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1662 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1663 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1664 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1665 update_autosuspend(dev, old_delay, old_use); in __pm_runtime_use_autosuspend()
1666 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1674 void pm_runtime_init(struct device *dev) in pm_runtime_init() argument
1676 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1677 dev->power.idle_notification = false; in pm_runtime_init()
1679 dev->power.disable_depth = 1; in pm_runtime_init()
1680 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1682 dev->power.runtime_error = 0; in pm_runtime_init()
1684 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1685 pm_suspend_ignore_children(dev, false); in pm_runtime_init()
1686 dev->power.runtime_auto = true; in pm_runtime_init()
1688 dev->power.request_pending = false; in pm_runtime_init()
1689 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1690 dev->power.deferred_resume = false; in pm_runtime_init()
1691 dev->power.needs_force_resume = 0; in pm_runtime_init()
1692 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1694 dev->power.timer_expires = 0; in pm_runtime_init()
1695 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1696 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1698 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1705 void pm_runtime_reinit(struct device *dev) in pm_runtime_reinit() argument
1707 if (!pm_runtime_enabled(dev)) { in pm_runtime_reinit()
1708 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1709 pm_runtime_set_suspended(dev); in pm_runtime_reinit()
1710 if (dev->power.irq_safe) { in pm_runtime_reinit()
1711 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1712 dev->power.irq_safe = 0; in pm_runtime_reinit()
1713 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1714 if (dev->parent) in pm_runtime_reinit()
1715 pm_runtime_put(dev->parent); in pm_runtime_reinit()
1724 void pm_runtime_remove(struct device *dev) in pm_runtime_remove() argument
1726 __pm_runtime_disable(dev, false); in pm_runtime_remove()
1727 pm_runtime_reinit(dev); in pm_runtime_remove()
1734 void pm_runtime_get_suppliers(struct device *dev) in pm_runtime_get_suppliers() argument
1741 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_get_suppliers()
1756 void pm_runtime_put_suppliers(struct device *dev) in pm_runtime_put_suppliers() argument
1765 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_put_suppliers()
1769 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1770 put = pm_runtime_status_suspended(dev) && in pm_runtime_put_suppliers()
1772 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1780 void pm_runtime_new_link(struct device *dev) in pm_runtime_new_link() argument
1782 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1783 dev->power.links_count++; in pm_runtime_new_link()
1784 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1787 static void pm_runtime_drop_link_count(struct device *dev) in pm_runtime_drop_link_count() argument
1789 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1790 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1791 dev->power.links_count--; in pm_runtime_drop_link_count()
1792 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1813 static bool pm_runtime_need_not_resume(struct device *dev) in pm_runtime_need_not_resume() argument
1815 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1816 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1817 dev->power.ignore_children); in pm_runtime_need_not_resume()
1837 int pm_runtime_force_suspend(struct device *dev) in pm_runtime_force_suspend() argument
1842 pm_runtime_disable(dev); in pm_runtime_force_suspend()
1843 if (pm_runtime_status_suspended(dev)) in pm_runtime_force_suspend()
1846 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in pm_runtime_force_suspend()
1848 ret = callback ? callback(dev) : 0; in pm_runtime_force_suspend()
1858 if (pm_runtime_need_not_resume(dev)) { in pm_runtime_force_suspend()
1859 pm_runtime_set_suspended(dev); in pm_runtime_force_suspend()
1861 __update_runtime_status(dev, RPM_SUSPENDED); in pm_runtime_force_suspend()
1862 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1868 pm_runtime_enable(dev); in pm_runtime_force_suspend()
1885 int pm_runtime_force_resume(struct device *dev) in pm_runtime_force_resume() argument
1890 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1897 __update_runtime_status(dev, RPM_ACTIVE); in pm_runtime_force_resume()
1899 callback = RPM_GET_CALLBACK(dev, runtime_resume); in pm_runtime_force_resume()
1901 ret = callback ? callback(dev) : 0; in pm_runtime_force_resume()
1903 pm_runtime_set_suspended(dev); in pm_runtime_force_resume()
1907 pm_runtime_mark_last_busy(dev); in pm_runtime_force_resume()
1909 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()
1910 pm_runtime_enable(dev); in pm_runtime_force_resume()