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 dev->power.runtime_status = status; in __update_runtime_status()
99 static u64 rpm_get_accounted_time(struct device *dev, bool suspended) in rpm_get_accounted_time() argument
104 spin_lock_irqsave(&dev->power.lock, flags); in rpm_get_accounted_time()
106 update_pm_runtime_accounting(dev); in rpm_get_accounted_time()
107 time = suspended ? dev->power.suspended_time : dev->power.active_time; in rpm_get_accounted_time()
109 spin_unlock_irqrestore(&dev->power.lock, flags); in rpm_get_accounted_time()
114 u64 pm_runtime_active_time(struct device *dev) in pm_runtime_active_time() argument
116 return rpm_get_accounted_time(dev, false); in pm_runtime_active_time()
119 u64 pm_runtime_suspended_time(struct device *dev) in pm_runtime_suspended_time() argument
121 return rpm_get_accounted_time(dev, true); in pm_runtime_suspended_time()
129 static void pm_runtime_deactivate_timer(struct device *dev) in pm_runtime_deactivate_timer() argument
131 if (dev->power.timer_expires > 0) { in pm_runtime_deactivate_timer()
132 hrtimer_try_to_cancel(&dev->power.suspend_timer); in pm_runtime_deactivate_timer()
133 dev->power.timer_expires = 0; in pm_runtime_deactivate_timer()
141 static void pm_runtime_cancel_pending(struct device *dev) in pm_runtime_cancel_pending() argument
143 pm_runtime_deactivate_timer(dev); in pm_runtime_cancel_pending()
148 dev->power.request = RPM_REQ_NONE; in pm_runtime_cancel_pending()
163 u64 pm_runtime_autosuspend_expiration(struct device *dev) in pm_runtime_autosuspend_expiration() argument
168 if (!dev->power.use_autosuspend) in pm_runtime_autosuspend_expiration()
171 autosuspend_delay = READ_ONCE(dev->power.autosuspend_delay); in pm_runtime_autosuspend_expiration()
175 expires = READ_ONCE(dev->power.last_busy); in pm_runtime_autosuspend_expiration()
184 static int dev_memalloc_noio(struct device *dev, void *data) in dev_memalloc_noio() argument
186 return dev->power.memalloc_noio; in dev_memalloc_noio()
217 void pm_runtime_set_memalloc_noio(struct device *dev, bool enable) in pm_runtime_set_memalloc_noio() argument
226 spin_lock_irq(&dev->power.lock); in pm_runtime_set_memalloc_noio()
227 enabled = dev->power.memalloc_noio; in pm_runtime_set_memalloc_noio()
228 dev->power.memalloc_noio = enable; in pm_runtime_set_memalloc_noio()
229 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_memalloc_noio()
238 dev = dev->parent; in pm_runtime_set_memalloc_noio()
245 if (!dev || (!enable && in pm_runtime_set_memalloc_noio()
246 device_for_each_child(dev, NULL, dev_memalloc_noio))) in pm_runtime_set_memalloc_noio()
257 static int rpm_check_suspend_allowed(struct device *dev) in rpm_check_suspend_allowed() argument
261 if (dev->power.runtime_error) in rpm_check_suspend_allowed()
263 else if (dev->power.disable_depth > 0) in rpm_check_suspend_allowed()
265 else if (atomic_read(&dev->power.usage_count)) in rpm_check_suspend_allowed()
267 else if (!dev->power.ignore_children && atomic_read(&dev->power.child_count)) in rpm_check_suspend_allowed()
271 else if ((dev->power.deferred_resume && in rpm_check_suspend_allowed()
272 dev->power.runtime_status == RPM_SUSPENDING) || in rpm_check_suspend_allowed()
273 (dev->power.request_pending && dev->power.request == RPM_REQ_RESUME)) in rpm_check_suspend_allowed()
275 else if (__dev_pm_qos_resume_latency(dev) == 0) in rpm_check_suspend_allowed()
277 else if (dev->power.runtime_status == RPM_SUSPENDED) in rpm_check_suspend_allowed()
283 static int rpm_get_suppliers(struct device *dev) in rpm_get_suppliers() argument
287 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in rpm_get_suppliers()
326 static void __rpm_put_suppliers(struct device *dev, bool try_to_suspend) in __rpm_put_suppliers() argument
330 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in __rpm_put_suppliers()
338 static void rpm_put_suppliers(struct device *dev) in rpm_put_suppliers() argument
340 __rpm_put_suppliers(dev, true); in rpm_put_suppliers()
343 static void rpm_suspend_suppliers(struct device *dev) in rpm_suspend_suppliers() argument
348 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in rpm_suspend_suppliers()
360 static int __rpm_callback(int (*cb)(struct device *), struct device *dev) in __rpm_callback() argument
361 __releases(&dev->power.lock) __acquires(&dev->power.lock) in __rpm_callback()
364 bool use_links = dev->power.links_count > 0; in __rpm_callback()
366 if (dev->power.irq_safe) { in __rpm_callback()
367 spin_unlock(&dev->power.lock); in __rpm_callback()
369 spin_unlock_irq(&dev->power.lock); in __rpm_callback()
378 if (use_links && dev->power.runtime_status == RPM_RESUMING) { in __rpm_callback()
381 retval = rpm_get_suppliers(dev); in __rpm_callback()
383 rpm_put_suppliers(dev); in __rpm_callback()
392 retval = cb(dev); in __rpm_callback()
394 if (dev->power.irq_safe) { in __rpm_callback()
395 spin_lock(&dev->power.lock); in __rpm_callback()
405 ((dev->power.runtime_status == RPM_SUSPENDING && !retval) || in __rpm_callback()
406 (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
409 __rpm_put_suppliers(dev, false); in __rpm_callback()
415 spin_lock_irq(&dev->power.lock); in __rpm_callback()
426 static int rpm_callback(int (*cb)(struct device *), struct device *dev) in rpm_callback() argument
430 if (dev->power.memalloc_noio) { in rpm_callback()
443 retval = __rpm_callback(cb, dev); in rpm_callback()
446 retval = __rpm_callback(cb, dev); in rpm_callback()
449 dev->power.runtime_error = retval; in rpm_callback()
466 static int rpm_idle(struct device *dev, int rpmflags) in rpm_idle() argument
471 trace_rpm_idle(dev, rpmflags); in rpm_idle()
472 retval = rpm_check_suspend_allowed(dev); in rpm_idle()
477 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
484 else if (dev->power.request_pending && in rpm_idle()
485 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
489 else if (dev->power.idle_notification) in rpm_idle()
496 dev->power.request = RPM_REQ_NONE; in rpm_idle()
498 callback = RPM_GET_CALLBACK(dev, runtime_idle); in rpm_idle()
501 if (!callback || dev->power.no_callbacks) in rpm_idle()
506 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
507 if (!dev->power.request_pending) { in rpm_idle()
508 dev->power.request_pending = true; in rpm_idle()
509 queue_work(pm_wq, &dev->power.work); in rpm_idle()
511 trace_rpm_return_int(dev, _THIS_IP_, 0); in rpm_idle()
515 dev->power.idle_notification = true; in rpm_idle()
517 if (dev->power.irq_safe) in rpm_idle()
518 spin_unlock(&dev->power.lock); in rpm_idle()
520 spin_unlock_irq(&dev->power.lock); in rpm_idle()
522 retval = callback(dev); in rpm_idle()
524 if (dev->power.irq_safe) in rpm_idle()
525 spin_lock(&dev->power.lock); in rpm_idle()
527 spin_lock_irq(&dev->power.lock); in rpm_idle()
529 dev->power.idle_notification = false; in rpm_idle()
530 wake_up_all(&dev->power.wait_queue); in rpm_idle()
533 trace_rpm_return_int(dev, _THIS_IP_, retval); in rpm_idle()
534 return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); in rpm_idle()
558 static int rpm_suspend(struct device *dev, int rpmflags) in rpm_suspend() argument
559 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
565 trace_rpm_suspend(dev, rpmflags); in rpm_suspend()
568 retval = rpm_check_suspend_allowed(dev); in rpm_suspend()
573 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
580 if ((rpmflags & RPM_AUTO) && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
581 u64 expires = pm_runtime_autosuspend_expiration(dev); in rpm_suspend()
585 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
594 if (!(dev->power.timer_expires && in rpm_suspend()
595 dev->power.timer_expires <= expires)) { in rpm_suspend()
600 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
603 dev->power.timer_expires = expires; in rpm_suspend()
604 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
609 dev->power.timer_autosuspends = 1; in rpm_suspend()
615 pm_runtime_cancel_pending(dev); in rpm_suspend()
617 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
625 if (dev->power.irq_safe) { in rpm_suspend()
626 spin_unlock(&dev->power.lock); in rpm_suspend()
630 spin_lock(&dev->power.lock); in rpm_suspend()
636 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
638 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
641 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
645 spin_lock_irq(&dev->power.lock); in rpm_suspend()
647 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
651 if (dev->power.no_callbacks) in rpm_suspend()
656 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
658 if (!dev->power.request_pending) { in rpm_suspend()
659 dev->power.request_pending = true; in rpm_suspend()
660 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
665 __update_runtime_status(dev, RPM_SUSPENDING); in rpm_suspend()
667 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in rpm_suspend()
669 dev_pm_enable_wake_irq_check(dev, true); in rpm_suspend()
670 retval = rpm_callback(callback, dev); in rpm_suspend()
674 dev_pm_enable_wake_irq_complete(dev); in rpm_suspend()
677 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_suspend()
678 pm_runtime_deactivate_timer(dev); in rpm_suspend()
680 if (dev->parent) { in rpm_suspend()
681 parent = dev->parent; in rpm_suspend()
684 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
686 if (dev->power.deferred_resume) { in rpm_suspend()
687 dev->power.deferred_resume = false; in rpm_suspend()
688 rpm_resume(dev, 0); in rpm_suspend()
693 if (dev->power.irq_safe) in rpm_suspend()
698 spin_unlock(&dev->power.lock); in rpm_suspend()
704 spin_lock(&dev->power.lock); in rpm_suspend()
707 if (dev->power.links_count > 0) { in rpm_suspend()
708 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
710 rpm_suspend_suppliers(dev); in rpm_suspend()
712 spin_lock_irq(&dev->power.lock); in rpm_suspend()
716 trace_rpm_return_int(dev, _THIS_IP_, retval); in rpm_suspend()
721 dev_pm_disable_wake_irq_check(dev, true); in rpm_suspend()
722 __update_runtime_status(dev, RPM_ACTIVE); in rpm_suspend()
723 dev->power.deferred_resume = false; in rpm_suspend()
724 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
727 dev->power.runtime_error = 0; in rpm_suspend()
736 pm_runtime_autosuspend_expiration(dev) != 0) in rpm_suspend()
739 pm_runtime_cancel_pending(dev); in rpm_suspend()
761 static int rpm_resume(struct device *dev, int rpmflags) in rpm_resume() argument
762 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
768 trace_rpm_resume(dev, rpmflags); in rpm_resume()
771 if (dev->power.runtime_error) { in rpm_resume()
773 } else if (dev->power.disable_depth > 0) { in rpm_resume()
774 if (dev->power.runtime_status == RPM_ACTIVE && in rpm_resume()
775 dev->power.last_status == RPM_ACTIVE) in rpm_resume()
789 dev->power.request = RPM_REQ_NONE; in rpm_resume()
790 if (!dev->power.timer_autosuspends) in rpm_resume()
791 pm_runtime_deactivate_timer(dev); in rpm_resume()
793 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
798 if (dev->power.runtime_status == RPM_RESUMING || in rpm_resume()
799 dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
803 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
804 dev->power.deferred_resume = true; in rpm_resume()
813 if (dev->power.irq_safe) { in rpm_resume()
814 spin_unlock(&dev->power.lock); in rpm_resume()
818 spin_lock(&dev->power.lock); in rpm_resume()
824 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
826 if (dev->power.runtime_status != RPM_RESUMING && in rpm_resume()
827 dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
830 spin_unlock_irq(&dev->power.lock); in rpm_resume()
834 spin_lock_irq(&dev->power.lock); in rpm_resume()
836 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
845 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
846 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
847 if (dev->parent->power.disable_depth > 0 || in rpm_resume()
848 dev->parent->power.ignore_children || in rpm_resume()
849 dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
850 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
851 spin_unlock(&dev->parent->power.lock); in rpm_resume()
855 spin_unlock(&dev->parent->power.lock); in rpm_resume()
860 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
861 if (!dev->power.request_pending) { in rpm_resume()
862 dev->power.request_pending = true; in rpm_resume()
863 queue_work(pm_wq, &dev->power.work); in rpm_resume()
869 if (!parent && dev->parent) { in rpm_resume()
875 parent = dev->parent; in rpm_resume()
876 if (dev->power.irq_safe) in rpm_resume()
879 spin_unlock(&dev->power.lock); in rpm_resume()
896 spin_lock(&dev->power.lock); in rpm_resume()
904 if (dev->power.no_callbacks) in rpm_resume()
907 __update_runtime_status(dev, RPM_RESUMING); in rpm_resume()
909 callback = RPM_GET_CALLBACK(dev, runtime_resume); in rpm_resume()
911 dev_pm_disable_wake_irq_check(dev, false); in rpm_resume()
912 retval = rpm_callback(callback, dev); in rpm_resume()
914 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_resume()
915 pm_runtime_cancel_pending(dev); in rpm_resume()
916 dev_pm_enable_wake_irq_check(dev, false); in rpm_resume()
919 __update_runtime_status(dev, RPM_ACTIVE); in rpm_resume()
920 pm_runtime_mark_last_busy(dev); in rpm_resume()
924 wake_up_all(&dev->power.wait_queue); in rpm_resume()
927 rpm_idle(dev, RPM_ASYNC); in rpm_resume()
930 if (parent && !dev->power.irq_safe) { in rpm_resume()
931 spin_unlock_irq(&dev->power.lock); in rpm_resume()
935 spin_lock_irq(&dev->power.lock); in rpm_resume()
938 trace_rpm_return_int(dev, _THIS_IP_, retval); in rpm_resume()
952 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work() local
955 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
957 if (!dev->power.request_pending) in pm_runtime_work()
960 req = dev->power.request; in pm_runtime_work()
961 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
962 dev->power.request_pending = false; in pm_runtime_work()
968 rpm_idle(dev, RPM_NOWAIT); in pm_runtime_work()
971 rpm_suspend(dev, RPM_NOWAIT); in pm_runtime_work()
974 rpm_suspend(dev, RPM_NOWAIT | RPM_AUTO); in pm_runtime_work()
977 rpm_resume(dev, RPM_NOWAIT); in pm_runtime_work()
982 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
993 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn() local
997 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
999 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
1005 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
1006 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
1010 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1020 int pm_schedule_suspend(struct device *dev, unsigned int delay) in pm_schedule_suspend() argument
1026 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1029 retval = rpm_suspend(dev, RPM_ASYNC); in pm_schedule_suspend()
1033 retval = rpm_check_suspend_allowed(dev); in pm_schedule_suspend()
1038 pm_runtime_cancel_pending(dev); in pm_schedule_suspend()
1041 dev->power.timer_expires = expires; in pm_schedule_suspend()
1042 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1043 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1046 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1052 static int rpm_drop_usage_count(struct device *dev) in rpm_drop_usage_count() argument
1056 ret = atomic_sub_return(1, &dev->power.usage_count); in rpm_drop_usage_count()
1066 atomic_inc(&dev->power.usage_count); in rpm_drop_usage_count()
1067 dev_warn(dev, "Runtime PM usage count underflow!\n"); in rpm_drop_usage_count()
1084 int __pm_runtime_idle(struct device *dev, int rpmflags) in __pm_runtime_idle() argument
1090 retval = rpm_drop_usage_count(dev); in __pm_runtime_idle()
1094 trace_rpm_usage(dev, rpmflags); in __pm_runtime_idle()
1099 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1101 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1102 retval = rpm_idle(dev, rpmflags); in __pm_runtime_idle()
1103 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1122 int __pm_runtime_suspend(struct device *dev, int rpmflags) in __pm_runtime_suspend() argument
1128 retval = rpm_drop_usage_count(dev); in __pm_runtime_suspend()
1132 trace_rpm_usage(dev, rpmflags); in __pm_runtime_suspend()
1137 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1139 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1140 retval = rpm_suspend(dev, rpmflags); in __pm_runtime_suspend()
1141 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1158 int __pm_runtime_resume(struct device *dev, int rpmflags) in __pm_runtime_resume() argument
1163 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1164 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1167 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1169 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1170 retval = rpm_resume(dev, rpmflags); in __pm_runtime_resume()
1171 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1199 int pm_runtime_get_if_active(struct device *dev, bool ign_usage_count) in pm_runtime_get_if_active() argument
1204 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1205 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1207 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1211 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1213 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1215 trace_rpm_usage(dev, 0); in pm_runtime_get_if_active()
1216 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1246 int __pm_runtime_set_status(struct device *dev, unsigned int status) in __pm_runtime_set_status() argument
1248 struct device *parent = dev->parent; in __pm_runtime_set_status()
1256 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_set_status()
1262 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1263 dev->power.disable_depth++; in __pm_runtime_set_status()
1267 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_set_status()
1281 error = rpm_get_suppliers(dev); in __pm_runtime_set_status()
1288 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_set_status()
1290 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1307 dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n", in __pm_runtime_set_status()
1308 dev_name(dev), in __pm_runtime_set_status()
1311 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1324 __update_runtime_status(dev, status); in __pm_runtime_set_status()
1326 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1329 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_set_status()
1337 rpm_put_suppliers(dev); in __pm_runtime_set_status()
1342 pm_runtime_enable(dev); in __pm_runtime_set_status()
1357 static void __pm_runtime_barrier(struct device *dev) in __pm_runtime_barrier() argument
1359 pm_runtime_deactivate_timer(dev); in __pm_runtime_barrier()
1361 if (dev->power.request_pending) { in __pm_runtime_barrier()
1362 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1363 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1365 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1367 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1368 dev->power.request_pending = false; in __pm_runtime_barrier()
1371 if (dev->power.runtime_status == RPM_SUSPENDING || in __pm_runtime_barrier()
1372 dev->power.runtime_status == RPM_RESUMING || in __pm_runtime_barrier()
1373 dev->power.idle_notification) { in __pm_runtime_barrier()
1378 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1380 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1381 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1382 && !dev->power.idle_notification) in __pm_runtime_barrier()
1384 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1388 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1390 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1408 int pm_runtime_barrier(struct device *dev) in pm_runtime_barrier() argument
1412 pm_runtime_get_noresume(dev); in pm_runtime_barrier()
1413 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1415 if (dev->power.request_pending in pm_runtime_barrier()
1416 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1417 rpm_resume(dev, 0); in pm_runtime_barrier()
1421 __pm_runtime_barrier(dev); in pm_runtime_barrier()
1423 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1424 pm_runtime_put_noidle(dev); in pm_runtime_barrier()
1444 void __pm_runtime_disable(struct device *dev, bool check_resume) in __pm_runtime_disable() argument
1446 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1448 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1449 dev->power.disable_depth++; in __pm_runtime_disable()
1458 if (check_resume && dev->power.request_pending && in __pm_runtime_disable()
1459 dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1464 pm_runtime_get_noresume(dev); in __pm_runtime_disable()
1466 rpm_resume(dev, 0); in __pm_runtime_disable()
1468 pm_runtime_put_noidle(dev); in __pm_runtime_disable()
1472 update_pm_runtime_accounting(dev); in __pm_runtime_disable()
1474 if (!dev->power.disable_depth++) { in __pm_runtime_disable()
1475 __pm_runtime_barrier(dev); in __pm_runtime_disable()
1476 dev->power.last_status = dev->power.runtime_status; in __pm_runtime_disable()
1480 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1488 void pm_runtime_enable(struct device *dev) in pm_runtime_enable() argument
1492 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1494 if (!dev->power.disable_depth) { in pm_runtime_enable()
1495 dev_warn(dev, "Unbalanced %s!\n", __func__); in pm_runtime_enable()
1499 if (--dev->power.disable_depth > 0) in pm_runtime_enable()
1502 dev->power.last_status = RPM_INVALID; in pm_runtime_enable()
1503 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1505 if (dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1506 !dev->power.ignore_children && in pm_runtime_enable()
1507 atomic_read(&dev->power.child_count) > 0) in pm_runtime_enable()
1508 dev_warn(dev, "Enabling runtime PM for inactive device with active children\n"); in pm_runtime_enable()
1511 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1529 int devm_pm_runtime_enable(struct device *dev) in devm_pm_runtime_enable() argument
1531 pm_runtime_enable(dev); in devm_pm_runtime_enable()
1533 return devm_add_action_or_reset(dev, pm_runtime_disable_action, dev); in devm_pm_runtime_enable()
1545 void pm_runtime_forbid(struct device *dev) in pm_runtime_forbid() argument
1547 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1548 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1551 dev->power.runtime_auto = false; in pm_runtime_forbid()
1552 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1553 rpm_resume(dev, 0); in pm_runtime_forbid()
1556 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1566 void pm_runtime_allow(struct device *dev) in pm_runtime_allow() argument
1570 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1571 if (dev->power.runtime_auto) in pm_runtime_allow()
1574 dev->power.runtime_auto = true; in pm_runtime_allow()
1575 ret = rpm_drop_usage_count(dev); in pm_runtime_allow()
1577 rpm_idle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1579 trace_rpm_usage(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1582 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1594 void pm_runtime_no_callbacks(struct device *dev) in pm_runtime_no_callbacks() argument
1596 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1597 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1598 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1599 if (device_is_registered(dev)) in pm_runtime_no_callbacks()
1600 rpm_sysfs_remove(dev); in pm_runtime_no_callbacks()
1615 void pm_runtime_irq_safe(struct device *dev) in pm_runtime_irq_safe() argument
1617 if (dev->parent) in pm_runtime_irq_safe()
1618 pm_runtime_get_sync(dev->parent); in pm_runtime_irq_safe()
1620 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1621 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1622 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1637 static void update_autosuspend(struct device *dev, int old_delay, int old_use) in update_autosuspend() argument
1639 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1642 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1646 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1647 rpm_resume(dev, 0); in update_autosuspend()
1649 trace_rpm_usage(dev, 0); in update_autosuspend()
1658 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1661 rpm_idle(dev, RPM_AUTO); in update_autosuspend()
1674 void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) in pm_runtime_set_autosuspend_delay() argument
1678 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1679 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1680 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1681 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1682 update_autosuspend(dev, old_delay, old_use); in pm_runtime_set_autosuspend_delay()
1683 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1695 void __pm_runtime_use_autosuspend(struct device *dev, bool use) in __pm_runtime_use_autosuspend() argument
1699 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1700 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1701 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1702 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1703 update_autosuspend(dev, old_delay, old_use); in __pm_runtime_use_autosuspend()
1704 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1712 void pm_runtime_init(struct device *dev) in pm_runtime_init() argument
1714 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1715 dev->power.last_status = RPM_INVALID; in pm_runtime_init()
1716 dev->power.idle_notification = false; in pm_runtime_init()
1718 dev->power.disable_depth = 1; in pm_runtime_init()
1719 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1721 dev->power.runtime_error = 0; in pm_runtime_init()
1723 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1724 pm_suspend_ignore_children(dev, false); in pm_runtime_init()
1725 dev->power.runtime_auto = true; in pm_runtime_init()
1727 dev->power.request_pending = false; in pm_runtime_init()
1728 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1729 dev->power.deferred_resume = false; in pm_runtime_init()
1730 dev->power.needs_force_resume = 0; in pm_runtime_init()
1731 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1733 dev->power.timer_expires = 0; in pm_runtime_init()
1734 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1735 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1737 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1744 void pm_runtime_reinit(struct device *dev) in pm_runtime_reinit() argument
1746 if (!pm_runtime_enabled(dev)) { in pm_runtime_reinit()
1747 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1748 pm_runtime_set_suspended(dev); in pm_runtime_reinit()
1749 if (dev->power.irq_safe) { in pm_runtime_reinit()
1750 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1751 dev->power.irq_safe = 0; in pm_runtime_reinit()
1752 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1753 if (dev->parent) in pm_runtime_reinit()
1754 pm_runtime_put(dev->parent); in pm_runtime_reinit()
1763 void pm_runtime_remove(struct device *dev) in pm_runtime_remove() argument
1765 __pm_runtime_disable(dev, false); in pm_runtime_remove()
1766 pm_runtime_reinit(dev); in pm_runtime_remove()
1773 void pm_runtime_get_suppliers(struct device *dev) in pm_runtime_get_suppliers() argument
1780 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_get_suppliers()
1794 void pm_runtime_put_suppliers(struct device *dev) in pm_runtime_put_suppliers() argument
1801 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_put_suppliers()
1811 void pm_runtime_new_link(struct device *dev) in pm_runtime_new_link() argument
1813 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1814 dev->power.links_count++; in pm_runtime_new_link()
1815 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1818 static void pm_runtime_drop_link_count(struct device *dev) in pm_runtime_drop_link_count() argument
1820 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1821 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1822 dev->power.links_count--; in pm_runtime_drop_link_count()
1823 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1844 static bool pm_runtime_need_not_resume(struct device *dev) in pm_runtime_need_not_resume() argument
1846 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1847 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1848 dev->power.ignore_children); in pm_runtime_need_not_resume()
1872 int pm_runtime_force_suspend(struct device *dev) in pm_runtime_force_suspend() argument
1877 pm_runtime_disable(dev); in pm_runtime_force_suspend()
1878 if (pm_runtime_status_suspended(dev)) in pm_runtime_force_suspend()
1881 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in pm_runtime_force_suspend()
1883 dev_pm_enable_wake_irq_check(dev, true); in pm_runtime_force_suspend()
1884 ret = callback ? callback(dev) : 0; in pm_runtime_force_suspend()
1888 dev_pm_enable_wake_irq_complete(dev); in pm_runtime_force_suspend()
1896 if (pm_runtime_need_not_resume(dev)) { in pm_runtime_force_suspend()
1897 pm_runtime_set_suspended(dev); in pm_runtime_force_suspend()
1899 __update_runtime_status(dev, RPM_SUSPENDED); in pm_runtime_force_suspend()
1900 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1906 dev_pm_disable_wake_irq_check(dev, true); in pm_runtime_force_suspend()
1907 pm_runtime_enable(dev); in pm_runtime_force_suspend()
1924 int pm_runtime_force_resume(struct device *dev) in pm_runtime_force_resume() argument
1929 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1936 __update_runtime_status(dev, RPM_ACTIVE); in pm_runtime_force_resume()
1938 callback = RPM_GET_CALLBACK(dev, runtime_resume); in pm_runtime_force_resume()
1940 dev_pm_disable_wake_irq_check(dev, false); in pm_runtime_force_resume()
1941 ret = callback ? callback(dev) : 0; in pm_runtime_force_resume()
1943 pm_runtime_set_suspended(dev); in pm_runtime_force_resume()
1944 dev_pm_enable_wake_irq_check(dev, false); in pm_runtime_force_resume()
1948 pm_runtime_mark_last_busy(dev); in pm_runtime_force_resume()
1950 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()
1951 pm_runtime_enable(dev); in pm_runtime_force_resume()