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, in pm_runtime_set_memalloc_noio()
258 static int rpm_check_suspend_allowed(struct device *dev) in rpm_check_suspend_allowed() argument
262 if (dev->power.runtime_error) in rpm_check_suspend_allowed()
264 else if (dev->power.disable_depth > 0) in rpm_check_suspend_allowed()
266 else if (atomic_read(&dev->power.usage_count) > 0) in rpm_check_suspend_allowed()
268 else if (!dev->power.ignore_children && in rpm_check_suspend_allowed()
269 atomic_read(&dev->power.child_count)) in rpm_check_suspend_allowed()
273 else if ((dev->power.deferred_resume in rpm_check_suspend_allowed()
274 && dev->power.runtime_status == RPM_SUSPENDING) in rpm_check_suspend_allowed()
275 || (dev->power.request_pending in rpm_check_suspend_allowed()
276 && dev->power.request == RPM_REQ_RESUME)) in rpm_check_suspend_allowed()
278 else if (__dev_pm_qos_resume_latency(dev) == 0) in rpm_check_suspend_allowed()
280 else if (dev->power.runtime_status == RPM_SUSPENDED) in rpm_check_suspend_allowed()
286 static int rpm_get_suppliers(struct device *dev) in rpm_get_suppliers() argument
290 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in rpm_get_suppliers()
308 static void __rpm_put_suppliers(struct device *dev, bool try_to_suspend) in __rpm_put_suppliers() argument
312 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in __rpm_put_suppliers()
323 static void rpm_put_suppliers(struct device *dev) in rpm_put_suppliers() argument
325 __rpm_put_suppliers(dev, true); in rpm_put_suppliers()
328 static void rpm_suspend_suppliers(struct device *dev) in rpm_suspend_suppliers() argument
333 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in rpm_suspend_suppliers()
345 static int __rpm_callback(int (*cb)(struct device *), struct device *dev) in __rpm_callback() argument
346 __releases(&dev->power.lock) __acquires(&dev->power.lock) in __rpm_callback()
349 bool use_links = dev->power.links_count > 0; in __rpm_callback()
351 if (dev->power.irq_safe) { in __rpm_callback()
352 spin_unlock(&dev->power.lock); in __rpm_callback()
354 spin_unlock_irq(&dev->power.lock); in __rpm_callback()
363 if (use_links && dev->power.runtime_status == RPM_RESUMING) { in __rpm_callback()
366 retval = rpm_get_suppliers(dev); in __rpm_callback()
368 rpm_put_suppliers(dev); in __rpm_callback()
377 retval = cb(dev); in __rpm_callback()
379 if (dev->power.irq_safe) { in __rpm_callback()
380 spin_lock(&dev->power.lock); in __rpm_callback()
390 && ((dev->power.runtime_status == RPM_SUSPENDING && !retval) in __rpm_callback()
391 || (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
394 __rpm_put_suppliers(dev, false); in __rpm_callback()
400 spin_lock_irq(&dev->power.lock); in __rpm_callback()
419 static int rpm_idle(struct device *dev, int rpmflags) in rpm_idle() argument
424 trace_rpm_idle_rcuidle(dev, rpmflags); in rpm_idle()
425 retval = rpm_check_suspend_allowed(dev); in rpm_idle()
430 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
437 else if (dev->power.request_pending && in rpm_idle()
438 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
442 else if (dev->power.idle_notification) in rpm_idle()
448 dev->power.request = RPM_REQ_NONE; in rpm_idle()
450 callback = RPM_GET_CALLBACK(dev, runtime_idle); in rpm_idle()
453 if (!callback || dev->power.no_callbacks) in rpm_idle()
458 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
459 if (!dev->power.request_pending) { in rpm_idle()
460 dev->power.request_pending = true; in rpm_idle()
461 queue_work(pm_wq, &dev->power.work); in rpm_idle()
463 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0); in rpm_idle()
467 dev->power.idle_notification = true; in rpm_idle()
469 retval = __rpm_callback(callback, dev); in rpm_idle()
471 dev->power.idle_notification = false; in rpm_idle()
472 wake_up_all(&dev->power.wait_queue); in rpm_idle()
475 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_idle()
476 return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); in rpm_idle()
484 static int rpm_callback(int (*cb)(struct device *), struct device *dev) in rpm_callback() argument
488 if (dev->power.memalloc_noio) { in rpm_callback()
501 retval = __rpm_callback(cb, dev); in rpm_callback()
504 retval = __rpm_callback(cb, dev); in rpm_callback()
507 dev->power.runtime_error = retval; in rpm_callback()
532 static int rpm_suspend(struct device *dev, int rpmflags) in rpm_suspend() argument
533 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
539 trace_rpm_suspend_rcuidle(dev, rpmflags); in rpm_suspend()
542 retval = rpm_check_suspend_allowed(dev); in rpm_suspend()
547 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
554 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
555 u64 expires = pm_runtime_autosuspend_expiration(dev); in rpm_suspend()
559 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
568 if (!(dev->power.timer_expires && in rpm_suspend()
569 dev->power.timer_expires <= expires)) { in rpm_suspend()
574 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
577 dev->power.timer_expires = expires; in rpm_suspend()
578 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
583 dev->power.timer_autosuspends = 1; in rpm_suspend()
589 pm_runtime_cancel_pending(dev); in rpm_suspend()
591 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
599 if (dev->power.irq_safe) { in rpm_suspend()
600 spin_unlock(&dev->power.lock); in rpm_suspend()
604 spin_lock(&dev->power.lock); in rpm_suspend()
610 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
612 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
615 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
619 spin_lock_irq(&dev->power.lock); in rpm_suspend()
621 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
625 if (dev->power.no_callbacks) in rpm_suspend()
630 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
632 if (!dev->power.request_pending) { in rpm_suspend()
633 dev->power.request_pending = true; in rpm_suspend()
634 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
639 __update_runtime_status(dev, RPM_SUSPENDING); in rpm_suspend()
641 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in rpm_suspend()
643 dev_pm_enable_wake_irq_check(dev, true); in rpm_suspend()
644 retval = rpm_callback(callback, dev); in rpm_suspend()
649 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_suspend()
650 pm_runtime_deactivate_timer(dev); in rpm_suspend()
652 if (dev->parent) { in rpm_suspend()
653 parent = dev->parent; in rpm_suspend()
656 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
658 if (dev->power.deferred_resume) { in rpm_suspend()
659 dev->power.deferred_resume = false; in rpm_suspend()
660 rpm_resume(dev, 0); in rpm_suspend()
665 if (dev->power.irq_safe) in rpm_suspend()
670 spin_unlock(&dev->power.lock); in rpm_suspend()
676 spin_lock(&dev->power.lock); in rpm_suspend()
679 if (dev->power.links_count > 0) { in rpm_suspend()
680 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
682 rpm_suspend_suppliers(dev); in rpm_suspend()
684 spin_lock_irq(&dev->power.lock); in rpm_suspend()
688 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_suspend()
693 dev_pm_disable_wake_irq_check(dev); in rpm_suspend()
694 __update_runtime_status(dev, RPM_ACTIVE); in rpm_suspend()
695 dev->power.deferred_resume = false; in rpm_suspend()
696 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
699 dev->power.runtime_error = 0; in rpm_suspend()
708 pm_runtime_autosuspend_expiration(dev) != 0) in rpm_suspend()
711 pm_runtime_cancel_pending(dev); in rpm_suspend()
733 static int rpm_resume(struct device *dev, int rpmflags) in rpm_resume() argument
734 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
740 trace_rpm_resume_rcuidle(dev, rpmflags); in rpm_resume()
743 if (dev->power.runtime_error) in rpm_resume()
745 else if (dev->power.disable_depth == 1 && dev->power.is_suspended in rpm_resume()
746 && dev->power.runtime_status == RPM_ACTIVE) in rpm_resume()
748 else if (dev->power.disable_depth > 0) in rpm_resume()
759 dev->power.request = RPM_REQ_NONE; in rpm_resume()
760 if (!dev->power.timer_autosuspends) in rpm_resume()
761 pm_runtime_deactivate_timer(dev); in rpm_resume()
763 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
768 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
769 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
773 if (dev->power.runtime_status == RPM_SUSPENDING) in rpm_resume()
774 dev->power.deferred_resume = true; in rpm_resume()
780 if (dev->power.irq_safe) { in rpm_resume()
781 spin_unlock(&dev->power.lock); in rpm_resume()
785 spin_lock(&dev->power.lock); in rpm_resume()
791 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
793 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
794 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
797 spin_unlock_irq(&dev->power.lock); in rpm_resume()
801 spin_lock_irq(&dev->power.lock); in rpm_resume()
803 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
812 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
813 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
814 if (dev->parent->power.disable_depth > 0 in rpm_resume()
815 || dev->parent->power.ignore_children in rpm_resume()
816 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
817 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
818 spin_unlock(&dev->parent->power.lock); in rpm_resume()
822 spin_unlock(&dev->parent->power.lock); in rpm_resume()
827 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
828 if (!dev->power.request_pending) { in rpm_resume()
829 dev->power.request_pending = true; in rpm_resume()
830 queue_work(pm_wq, &dev->power.work); in rpm_resume()
836 if (!parent && dev->parent) { in rpm_resume()
842 parent = dev->parent; in rpm_resume()
843 if (dev->power.irq_safe) in rpm_resume()
845 spin_unlock(&dev->power.lock); in rpm_resume()
862 spin_lock(&dev->power.lock); in rpm_resume()
869 if (dev->power.no_callbacks) in rpm_resume()
872 __update_runtime_status(dev, RPM_RESUMING); in rpm_resume()
874 callback = RPM_GET_CALLBACK(dev, runtime_resume); in rpm_resume()
876 dev_pm_disable_wake_irq_check(dev); in rpm_resume()
877 retval = rpm_callback(callback, dev); in rpm_resume()
879 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_resume()
880 pm_runtime_cancel_pending(dev); in rpm_resume()
881 dev_pm_enable_wake_irq_check(dev, false); in rpm_resume()
884 __update_runtime_status(dev, RPM_ACTIVE); in rpm_resume()
885 pm_runtime_mark_last_busy(dev); in rpm_resume()
889 wake_up_all(&dev->power.wait_queue); in rpm_resume()
892 rpm_idle(dev, RPM_ASYNC); in rpm_resume()
895 if (parent && !dev->power.irq_safe) { in rpm_resume()
896 spin_unlock_irq(&dev->power.lock); in rpm_resume()
900 spin_lock_irq(&dev->power.lock); in rpm_resume()
903 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_resume()
917 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work() local
920 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
922 if (!dev->power.request_pending) in pm_runtime_work()
925 req = dev->power.request; in pm_runtime_work()
926 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
927 dev->power.request_pending = false; in pm_runtime_work()
933 rpm_idle(dev, RPM_NOWAIT); in pm_runtime_work()
936 rpm_suspend(dev, RPM_NOWAIT); in pm_runtime_work()
939 rpm_suspend(dev, RPM_NOWAIT | RPM_AUTO); in pm_runtime_work()
942 rpm_resume(dev, RPM_NOWAIT); in pm_runtime_work()
947 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
958 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn() local
962 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
964 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
970 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
971 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
975 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
985 int pm_schedule_suspend(struct device *dev, unsigned int delay) in pm_schedule_suspend() argument
991 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
994 retval = rpm_suspend(dev, RPM_ASYNC); in pm_schedule_suspend()
998 retval = rpm_check_suspend_allowed(dev); in pm_schedule_suspend()
1003 pm_runtime_cancel_pending(dev); in pm_schedule_suspend()
1006 dev->power.timer_expires = expires; in pm_schedule_suspend()
1007 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1008 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1011 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1029 int __pm_runtime_idle(struct device *dev, int rpmflags) in __pm_runtime_idle() argument
1035 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_idle()
1036 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_idle()
1041 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1043 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1044 retval = rpm_idle(dev, rpmflags); in __pm_runtime_idle()
1045 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1063 int __pm_runtime_suspend(struct device *dev, int rpmflags) in __pm_runtime_suspend() argument
1069 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_suspend()
1070 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_suspend()
1075 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1077 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1078 retval = rpm_suspend(dev, rpmflags); in __pm_runtime_suspend()
1079 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1096 int __pm_runtime_resume(struct device *dev, int rpmflags) in __pm_runtime_resume() argument
1101 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1102 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1105 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1107 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1108 retval = rpm_resume(dev, rpmflags); in __pm_runtime_resume()
1109 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1137 int pm_runtime_get_if_active(struct device *dev, bool ign_usage_count) in pm_runtime_get_if_active() argument
1142 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1143 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1145 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1149 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1151 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1153 trace_rpm_usage_rcuidle(dev, 0); in pm_runtime_get_if_active()
1154 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1184 int __pm_runtime_set_status(struct device *dev, unsigned int status) in __pm_runtime_set_status() argument
1186 struct device *parent = dev->parent; in __pm_runtime_set_status()
1193 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1199 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1200 dev->power.disable_depth++; in __pm_runtime_set_status()
1204 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1218 error = rpm_get_suppliers(dev); in __pm_runtime_set_status()
1225 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1227 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1244 dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n", in __pm_runtime_set_status()
1245 dev_name(dev), in __pm_runtime_set_status()
1248 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1261 __update_runtime_status(dev, status); in __pm_runtime_set_status()
1263 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1266 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1274 rpm_put_suppliers(dev); in __pm_runtime_set_status()
1279 pm_runtime_enable(dev); in __pm_runtime_set_status()
1294 static void __pm_runtime_barrier(struct device *dev) in __pm_runtime_barrier() argument
1296 pm_runtime_deactivate_timer(dev); in __pm_runtime_barrier()
1298 if (dev->power.request_pending) { in __pm_runtime_barrier()
1299 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1300 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1302 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1304 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1305 dev->power.request_pending = false; in __pm_runtime_barrier()
1308 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1309 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1310 || dev->power.idle_notification) { in __pm_runtime_barrier()
1315 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1317 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1318 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1319 && !dev->power.idle_notification) in __pm_runtime_barrier()
1321 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1325 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1327 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1345 int pm_runtime_barrier(struct device *dev) in pm_runtime_barrier() argument
1349 pm_runtime_get_noresume(dev); in pm_runtime_barrier()
1350 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1352 if (dev->power.request_pending in pm_runtime_barrier()
1353 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1354 rpm_resume(dev, 0); in pm_runtime_barrier()
1358 __pm_runtime_barrier(dev); in pm_runtime_barrier()
1360 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1361 pm_runtime_put_noidle(dev); in pm_runtime_barrier()
1381 void __pm_runtime_disable(struct device *dev, bool check_resume) in __pm_runtime_disable() argument
1383 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1385 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1386 dev->power.disable_depth++; in __pm_runtime_disable()
1395 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1396 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1401 pm_runtime_get_noresume(dev); in __pm_runtime_disable()
1403 rpm_resume(dev, 0); in __pm_runtime_disable()
1405 pm_runtime_put_noidle(dev); in __pm_runtime_disable()
1409 update_pm_runtime_accounting(dev); in __pm_runtime_disable()
1411 if (!dev->power.disable_depth++) in __pm_runtime_disable()
1412 __pm_runtime_barrier(dev); in __pm_runtime_disable()
1415 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1423 void pm_runtime_enable(struct device *dev) in pm_runtime_enable() argument
1427 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1429 if (dev->power.disable_depth > 0) { in pm_runtime_enable()
1430 dev->power.disable_depth--; in pm_runtime_enable()
1433 if (!dev->power.disable_depth) in pm_runtime_enable()
1434 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1436 dev_warn(dev, "Unbalanced %s!\n", __func__); in pm_runtime_enable()
1439 WARN(!dev->power.disable_depth && in pm_runtime_enable()
1440 dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1441 !dev->power.ignore_children && in pm_runtime_enable()
1442 atomic_read(&dev->power.child_count) > 0, in pm_runtime_enable()
1444 dev_name(dev)); in pm_runtime_enable()
1446 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1459 int devm_pm_runtime_enable(struct device *dev) in devm_pm_runtime_enable() argument
1461 pm_runtime_enable(dev); in devm_pm_runtime_enable()
1463 return devm_add_action_or_reset(dev, pm_runtime_disable_action, dev); in devm_pm_runtime_enable()
1475 void pm_runtime_forbid(struct device *dev) in pm_runtime_forbid() argument
1477 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1478 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1481 dev->power.runtime_auto = false; in pm_runtime_forbid()
1482 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1483 rpm_resume(dev, 0); in pm_runtime_forbid()
1486 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1496 void pm_runtime_allow(struct device *dev) in pm_runtime_allow() argument
1498 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1499 if (dev->power.runtime_auto) in pm_runtime_allow()
1502 dev->power.runtime_auto = true; in pm_runtime_allow()
1503 if (atomic_dec_and_test(&dev->power.usage_count)) in pm_runtime_allow()
1504 rpm_idle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1506 trace_rpm_usage_rcuidle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1509 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1521 void pm_runtime_no_callbacks(struct device *dev) in pm_runtime_no_callbacks() argument
1523 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1524 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1525 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1526 if (device_is_registered(dev)) in pm_runtime_no_callbacks()
1527 rpm_sysfs_remove(dev); in pm_runtime_no_callbacks()
1542 void pm_runtime_irq_safe(struct device *dev) in pm_runtime_irq_safe() argument
1544 if (dev->parent) in pm_runtime_irq_safe()
1545 pm_runtime_get_sync(dev->parent); in pm_runtime_irq_safe()
1546 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1547 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1548 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1563 static void update_autosuspend(struct device *dev, int old_delay, int old_use) in update_autosuspend() argument
1565 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1568 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1572 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1573 rpm_resume(dev, 0); in update_autosuspend()
1575 trace_rpm_usage_rcuidle(dev, 0); in update_autosuspend()
1584 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1587 rpm_idle(dev, RPM_AUTO); in update_autosuspend()
1600 void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) in pm_runtime_set_autosuspend_delay() argument
1604 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1605 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1606 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1607 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1608 update_autosuspend(dev, old_delay, old_use); in pm_runtime_set_autosuspend_delay()
1609 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1621 void __pm_runtime_use_autosuspend(struct device *dev, bool use) in __pm_runtime_use_autosuspend() argument
1625 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1626 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1627 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1628 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1629 update_autosuspend(dev, old_delay, old_use); in __pm_runtime_use_autosuspend()
1630 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1638 void pm_runtime_init(struct device *dev) in pm_runtime_init() argument
1640 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1641 dev->power.idle_notification = false; in pm_runtime_init()
1643 dev->power.disable_depth = 1; in pm_runtime_init()
1644 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1646 dev->power.runtime_error = 0; in pm_runtime_init()
1648 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1649 pm_suspend_ignore_children(dev, false); in pm_runtime_init()
1650 dev->power.runtime_auto = true; in pm_runtime_init()
1652 dev->power.request_pending = false; in pm_runtime_init()
1653 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1654 dev->power.deferred_resume = false; in pm_runtime_init()
1655 dev->power.needs_force_resume = 0; in pm_runtime_init()
1656 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1658 dev->power.timer_expires = 0; in pm_runtime_init()
1659 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1660 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1662 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1669 void pm_runtime_reinit(struct device *dev) in pm_runtime_reinit() argument
1671 if (!pm_runtime_enabled(dev)) { in pm_runtime_reinit()
1672 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1673 pm_runtime_set_suspended(dev); in pm_runtime_reinit()
1674 if (dev->power.irq_safe) { in pm_runtime_reinit()
1675 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1676 dev->power.irq_safe = 0; in pm_runtime_reinit()
1677 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1678 if (dev->parent) in pm_runtime_reinit()
1679 pm_runtime_put(dev->parent); in pm_runtime_reinit()
1688 void pm_runtime_remove(struct device *dev) in pm_runtime_remove() argument
1690 __pm_runtime_disable(dev, false); in pm_runtime_remove()
1691 pm_runtime_reinit(dev); in pm_runtime_remove()
1698 void pm_runtime_get_suppliers(struct device *dev) in pm_runtime_get_suppliers() argument
1705 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_get_suppliers()
1720 void pm_runtime_put_suppliers(struct device *dev) in pm_runtime_put_suppliers() argument
1729 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_put_suppliers()
1733 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1734 put = pm_runtime_status_suspended(dev) && in pm_runtime_put_suppliers()
1736 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1744 void pm_runtime_new_link(struct device *dev) in pm_runtime_new_link() argument
1746 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1747 dev->power.links_count++; in pm_runtime_new_link()
1748 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1751 static void pm_runtime_drop_link_count(struct device *dev) in pm_runtime_drop_link_count() argument
1753 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1754 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1755 dev->power.links_count--; in pm_runtime_drop_link_count()
1756 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1778 static bool pm_runtime_need_not_resume(struct device *dev) in pm_runtime_need_not_resume() argument
1780 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1781 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1782 dev->power.ignore_children); in pm_runtime_need_not_resume()
1802 int pm_runtime_force_suspend(struct device *dev) in pm_runtime_force_suspend() argument
1807 pm_runtime_disable(dev); in pm_runtime_force_suspend()
1808 if (pm_runtime_status_suspended(dev)) in pm_runtime_force_suspend()
1811 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in pm_runtime_force_suspend()
1813 ret = callback ? callback(dev) : 0; in pm_runtime_force_suspend()
1823 if (pm_runtime_need_not_resume(dev)) { in pm_runtime_force_suspend()
1824 pm_runtime_set_suspended(dev); in pm_runtime_force_suspend()
1826 __update_runtime_status(dev, RPM_SUSPENDED); in pm_runtime_force_suspend()
1827 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1833 pm_runtime_enable(dev); in pm_runtime_force_suspend()
1850 int pm_runtime_force_resume(struct device *dev) in pm_runtime_force_resume() argument
1855 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1862 __update_runtime_status(dev, RPM_ACTIVE); in pm_runtime_force_resume()
1864 callback = RPM_GET_CALLBACK(dev, runtime_resume); in pm_runtime_force_resume()
1866 ret = callback ? callback(dev) : 0; in pm_runtime_force_resume()
1868 pm_runtime_set_suspended(dev); in pm_runtime_force_resume()
1872 pm_runtime_mark_last_busy(dev); in pm_runtime_force_resume()
1874 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()
1875 pm_runtime_enable(dev); in pm_runtime_force_resume()