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()
329 static void __rpm_put_suppliers(struct device *dev, bool try_to_suspend) in __rpm_put_suppliers() argument
333 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in __rpm_put_suppliers()
341 static void rpm_put_suppliers(struct device *dev) in rpm_put_suppliers() argument
343 __rpm_put_suppliers(dev, true); in rpm_put_suppliers()
346 static void rpm_suspend_suppliers(struct device *dev) in rpm_suspend_suppliers() argument
351 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in rpm_suspend_suppliers()
363 static int __rpm_callback(int (*cb)(struct device *), struct device *dev) in __rpm_callback() argument
364 __releases(&dev->power.lock) __acquires(&dev->power.lock) in __rpm_callback()
367 bool use_links = dev->power.links_count > 0; in __rpm_callback()
369 if (dev->power.irq_safe) { in __rpm_callback()
370 spin_unlock(&dev->power.lock); in __rpm_callback()
372 spin_unlock_irq(&dev->power.lock); in __rpm_callback()
381 if (use_links && dev->power.runtime_status == RPM_RESUMING) { in __rpm_callback()
384 retval = rpm_get_suppliers(dev); in __rpm_callback()
386 rpm_put_suppliers(dev); in __rpm_callback()
394 retval = cb(dev); in __rpm_callback()
396 if (dev->power.irq_safe) { in __rpm_callback()
397 spin_lock(&dev->power.lock); in __rpm_callback()
407 && ((dev->power.runtime_status == RPM_SUSPENDING && !retval) in __rpm_callback()
408 || (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
411 __rpm_put_suppliers(dev, false); in __rpm_callback()
417 spin_lock_irq(&dev->power.lock); in __rpm_callback()
436 static int rpm_idle(struct device *dev, int rpmflags) in rpm_idle() argument
441 trace_rpm_idle_rcuidle(dev, rpmflags); in rpm_idle()
442 retval = rpm_check_suspend_allowed(dev); in rpm_idle()
447 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
454 else if (dev->power.request_pending && in rpm_idle()
455 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
459 else if (dev->power.idle_notification) in rpm_idle()
465 dev->power.request = RPM_REQ_NONE; in rpm_idle()
467 if (dev->power.no_callbacks) in rpm_idle()
472 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
473 if (!dev->power.request_pending) { in rpm_idle()
474 dev->power.request_pending = true; in rpm_idle()
475 queue_work(pm_wq, &dev->power.work); in rpm_idle()
477 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0); in rpm_idle()
481 dev->power.idle_notification = true; in rpm_idle()
483 callback = RPM_GET_CALLBACK(dev, runtime_idle); in rpm_idle()
486 retval = __rpm_callback(callback, dev); in rpm_idle()
488 dev->power.idle_notification = false; in rpm_idle()
489 wake_up_all(&dev->power.wait_queue); in rpm_idle()
492 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_idle()
493 return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); in rpm_idle()
501 static int rpm_callback(int (*cb)(struct device *), struct device *dev) in rpm_callback() argument
508 if (dev->power.memalloc_noio) { in rpm_callback()
521 retval = __rpm_callback(cb, dev); in rpm_callback()
524 retval = __rpm_callback(cb, dev); in rpm_callback()
527 dev->power.runtime_error = retval; in rpm_callback()
552 static int rpm_suspend(struct device *dev, int rpmflags) in rpm_suspend() argument
553 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
559 trace_rpm_suspend_rcuidle(dev, rpmflags); in rpm_suspend()
562 retval = rpm_check_suspend_allowed(dev); in rpm_suspend()
567 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
574 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
575 u64 expires = pm_runtime_autosuspend_expiration(dev); in rpm_suspend()
579 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
588 if (!(dev->power.timer_expires && in rpm_suspend()
589 dev->power.timer_expires <= expires)) { in rpm_suspend()
594 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
597 dev->power.timer_expires = expires; in rpm_suspend()
598 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
603 dev->power.timer_autosuspends = 1; in rpm_suspend()
609 pm_runtime_cancel_pending(dev); in rpm_suspend()
611 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
619 if (dev->power.irq_safe) { in rpm_suspend()
620 spin_unlock(&dev->power.lock); in rpm_suspend()
624 spin_lock(&dev->power.lock); in rpm_suspend()
630 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
632 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
635 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
639 spin_lock_irq(&dev->power.lock); in rpm_suspend()
641 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
645 if (dev->power.no_callbacks) in rpm_suspend()
650 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
652 if (!dev->power.request_pending) { in rpm_suspend()
653 dev->power.request_pending = true; in rpm_suspend()
654 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
659 __update_runtime_status(dev, RPM_SUSPENDING); in rpm_suspend()
661 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in rpm_suspend()
663 dev_pm_enable_wake_irq_check(dev, true); in rpm_suspend()
664 retval = rpm_callback(callback, dev); in rpm_suspend()
669 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_suspend()
670 pm_runtime_deactivate_timer(dev); in rpm_suspend()
672 if (dev->parent) { in rpm_suspend()
673 parent = dev->parent; in rpm_suspend()
676 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
678 if (dev->power.deferred_resume) { in rpm_suspend()
679 dev->power.deferred_resume = false; in rpm_suspend()
680 rpm_resume(dev, 0); in rpm_suspend()
685 if (dev->power.irq_safe) in rpm_suspend()
690 spin_unlock(&dev->power.lock); in rpm_suspend()
696 spin_lock(&dev->power.lock); in rpm_suspend()
699 if (dev->power.links_count > 0) { in rpm_suspend()
700 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
702 rpm_suspend_suppliers(dev); in rpm_suspend()
704 spin_lock_irq(&dev->power.lock); in rpm_suspend()
708 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_suspend()
713 dev_pm_disable_wake_irq_check(dev); in rpm_suspend()
714 __update_runtime_status(dev, RPM_ACTIVE); in rpm_suspend()
715 dev->power.deferred_resume = false; in rpm_suspend()
716 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
719 dev->power.runtime_error = 0; in rpm_suspend()
728 pm_runtime_autosuspend_expiration(dev) != 0) in rpm_suspend()
731 pm_runtime_cancel_pending(dev); in rpm_suspend()
753 static int rpm_resume(struct device *dev, int rpmflags) in rpm_resume() argument
754 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
760 trace_rpm_resume_rcuidle(dev, rpmflags); in rpm_resume()
763 if (dev->power.runtime_error) in rpm_resume()
765 else if (dev->power.disable_depth == 1 && dev->power.is_suspended in rpm_resume()
766 && dev->power.runtime_status == RPM_ACTIVE) in rpm_resume()
768 else if (dev->power.disable_depth > 0) in rpm_resume()
779 dev->power.request = RPM_REQ_NONE; in rpm_resume()
780 if (!dev->power.timer_autosuspends) in rpm_resume()
781 pm_runtime_deactivate_timer(dev); in rpm_resume()
783 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
788 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
789 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
793 if (dev->power.runtime_status == RPM_SUSPENDING) in rpm_resume()
794 dev->power.deferred_resume = true; in rpm_resume()
800 if (dev->power.irq_safe) { in rpm_resume()
801 spin_unlock(&dev->power.lock); in rpm_resume()
805 spin_lock(&dev->power.lock); in rpm_resume()
811 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
813 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
814 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
817 spin_unlock_irq(&dev->power.lock); in rpm_resume()
821 spin_lock_irq(&dev->power.lock); in rpm_resume()
823 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
832 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
833 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
834 if (dev->parent->power.disable_depth > 0 in rpm_resume()
835 || dev->parent->power.ignore_children in rpm_resume()
836 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
837 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
838 spin_unlock(&dev->parent->power.lock); in rpm_resume()
842 spin_unlock(&dev->parent->power.lock); in rpm_resume()
847 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
848 if (!dev->power.request_pending) { in rpm_resume()
849 dev->power.request_pending = true; in rpm_resume()
850 queue_work(pm_wq, &dev->power.work); in rpm_resume()
856 if (!parent && dev->parent) { in rpm_resume()
862 parent = dev->parent; in rpm_resume()
863 if (dev->power.irq_safe) in rpm_resume()
865 spin_unlock(&dev->power.lock); in rpm_resume()
882 spin_lock(&dev->power.lock); in rpm_resume()
889 if (dev->power.no_callbacks) in rpm_resume()
892 __update_runtime_status(dev, RPM_RESUMING); in rpm_resume()
894 callback = RPM_GET_CALLBACK(dev, runtime_resume); in rpm_resume()
896 dev_pm_disable_wake_irq_check(dev); in rpm_resume()
897 retval = rpm_callback(callback, dev); in rpm_resume()
899 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_resume()
900 pm_runtime_cancel_pending(dev); in rpm_resume()
901 dev_pm_enable_wake_irq_check(dev, false); in rpm_resume()
904 __update_runtime_status(dev, RPM_ACTIVE); in rpm_resume()
905 pm_runtime_mark_last_busy(dev); in rpm_resume()
909 wake_up_all(&dev->power.wait_queue); in rpm_resume()
912 rpm_idle(dev, RPM_ASYNC); in rpm_resume()
915 if (parent && !dev->power.irq_safe) { in rpm_resume()
916 spin_unlock_irq(&dev->power.lock); in rpm_resume()
920 spin_lock_irq(&dev->power.lock); in rpm_resume()
923 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_resume()
937 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work() local
940 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
942 if (!dev->power.request_pending) in pm_runtime_work()
945 req = dev->power.request; in pm_runtime_work()
946 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
947 dev->power.request_pending = false; in pm_runtime_work()
953 rpm_idle(dev, RPM_NOWAIT); in pm_runtime_work()
956 rpm_suspend(dev, RPM_NOWAIT); in pm_runtime_work()
959 rpm_suspend(dev, RPM_NOWAIT | RPM_AUTO); in pm_runtime_work()
962 rpm_resume(dev, RPM_NOWAIT); in pm_runtime_work()
967 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
978 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn() local
982 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
984 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
990 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
991 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
995 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1005 int pm_schedule_suspend(struct device *dev, unsigned int delay) in pm_schedule_suspend() argument
1011 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1014 retval = rpm_suspend(dev, RPM_ASYNC); in pm_schedule_suspend()
1018 retval = rpm_check_suspend_allowed(dev); in pm_schedule_suspend()
1023 pm_runtime_cancel_pending(dev); in pm_schedule_suspend()
1026 dev->power.timer_expires = expires; in pm_schedule_suspend()
1027 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1028 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1031 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1049 int __pm_runtime_idle(struct device *dev, int rpmflags) in __pm_runtime_idle() argument
1055 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_idle()
1056 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_idle()
1061 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1063 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1064 retval = rpm_idle(dev, rpmflags); in __pm_runtime_idle()
1065 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1083 int __pm_runtime_suspend(struct device *dev, int rpmflags) in __pm_runtime_suspend() argument
1089 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_suspend()
1090 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_suspend()
1095 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1097 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1098 retval = rpm_suspend(dev, rpmflags); in __pm_runtime_suspend()
1099 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1116 int __pm_runtime_resume(struct device *dev, int rpmflags) in __pm_runtime_resume() argument
1121 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1122 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1125 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1127 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1128 retval = rpm_resume(dev, rpmflags); in __pm_runtime_resume()
1129 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1157 int pm_runtime_get_if_active(struct device *dev, bool ign_usage_count) in pm_runtime_get_if_active() argument
1162 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1163 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1165 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1169 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1171 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1173 trace_rpm_usage_rcuidle(dev, 0); in pm_runtime_get_if_active()
1174 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1204 int __pm_runtime_set_status(struct device *dev, unsigned int status) in __pm_runtime_set_status() argument
1206 struct device *parent = dev->parent; in __pm_runtime_set_status()
1213 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1219 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1220 dev->power.disable_depth++; in __pm_runtime_set_status()
1224 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1238 error = rpm_get_suppliers(dev); in __pm_runtime_set_status()
1245 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1247 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1264 dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n", in __pm_runtime_set_status()
1265 dev_name(dev), in __pm_runtime_set_status()
1268 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1281 __update_runtime_status(dev, status); in __pm_runtime_set_status()
1283 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1286 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1294 rpm_put_suppliers(dev); in __pm_runtime_set_status()
1299 pm_runtime_enable(dev); in __pm_runtime_set_status()
1314 static void __pm_runtime_barrier(struct device *dev) in __pm_runtime_barrier() argument
1316 pm_runtime_deactivate_timer(dev); in __pm_runtime_barrier()
1318 if (dev->power.request_pending) { in __pm_runtime_barrier()
1319 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1320 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1322 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1324 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1325 dev->power.request_pending = false; in __pm_runtime_barrier()
1328 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1329 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1330 || dev->power.idle_notification) { in __pm_runtime_barrier()
1335 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1337 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1338 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1339 && !dev->power.idle_notification) in __pm_runtime_barrier()
1341 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1345 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1347 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1365 int pm_runtime_barrier(struct device *dev) in pm_runtime_barrier() argument
1369 pm_runtime_get_noresume(dev); in pm_runtime_barrier()
1370 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1372 if (dev->power.request_pending in pm_runtime_barrier()
1373 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1374 rpm_resume(dev, 0); in pm_runtime_barrier()
1378 __pm_runtime_barrier(dev); in pm_runtime_barrier()
1380 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1381 pm_runtime_put_noidle(dev); in pm_runtime_barrier()
1401 void __pm_runtime_disable(struct device *dev, bool check_resume) in __pm_runtime_disable() argument
1403 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1405 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1406 dev->power.disable_depth++; in __pm_runtime_disable()
1415 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1416 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1421 pm_runtime_get_noresume(dev); in __pm_runtime_disable()
1423 rpm_resume(dev, 0); in __pm_runtime_disable()
1425 pm_runtime_put_noidle(dev); in __pm_runtime_disable()
1429 update_pm_runtime_accounting(dev); in __pm_runtime_disable()
1431 if (!dev->power.disable_depth++) in __pm_runtime_disable()
1432 __pm_runtime_barrier(dev); in __pm_runtime_disable()
1435 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1443 void pm_runtime_enable(struct device *dev) in pm_runtime_enable() argument
1447 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1449 if (dev->power.disable_depth > 0) { in pm_runtime_enable()
1450 dev->power.disable_depth--; in pm_runtime_enable()
1453 if (!dev->power.disable_depth) in pm_runtime_enable()
1454 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1456 dev_warn(dev, "Unbalanced %s!\n", __func__); in pm_runtime_enable()
1459 WARN(!dev->power.disable_depth && in pm_runtime_enable()
1460 dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1461 !dev->power.ignore_children && in pm_runtime_enable()
1462 atomic_read(&dev->power.child_count) > 0, in pm_runtime_enable()
1464 dev_name(dev)); in pm_runtime_enable()
1466 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1478 void pm_runtime_forbid(struct device *dev) in pm_runtime_forbid() argument
1480 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1481 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1484 dev->power.runtime_auto = false; in pm_runtime_forbid()
1485 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1486 rpm_resume(dev, 0); in pm_runtime_forbid()
1489 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1499 void pm_runtime_allow(struct device *dev) in pm_runtime_allow() argument
1501 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1502 if (dev->power.runtime_auto) in pm_runtime_allow()
1505 dev->power.runtime_auto = true; in pm_runtime_allow()
1506 if (atomic_dec_and_test(&dev->power.usage_count)) in pm_runtime_allow()
1507 rpm_idle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1509 trace_rpm_usage_rcuidle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1512 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1524 void pm_runtime_no_callbacks(struct device *dev) in pm_runtime_no_callbacks() argument
1526 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1527 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1528 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1529 if (device_is_registered(dev)) in pm_runtime_no_callbacks()
1530 rpm_sysfs_remove(dev); in pm_runtime_no_callbacks()
1545 void pm_runtime_irq_safe(struct device *dev) in pm_runtime_irq_safe() argument
1547 if (dev->parent) in pm_runtime_irq_safe()
1548 pm_runtime_get_sync(dev->parent); in pm_runtime_irq_safe()
1549 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1550 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1551 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1566 static void update_autosuspend(struct device *dev, int old_delay, int old_use) in update_autosuspend() argument
1568 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1571 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1575 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1576 rpm_resume(dev, 0); in update_autosuspend()
1578 trace_rpm_usage_rcuidle(dev, 0); in update_autosuspend()
1587 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1590 rpm_idle(dev, RPM_AUTO); in update_autosuspend()
1603 void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) in pm_runtime_set_autosuspend_delay() argument
1607 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1608 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1609 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1610 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1611 update_autosuspend(dev, old_delay, old_use); in pm_runtime_set_autosuspend_delay()
1612 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1624 void __pm_runtime_use_autosuspend(struct device *dev, bool use) in __pm_runtime_use_autosuspend() argument
1628 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1629 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1630 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1631 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1632 update_autosuspend(dev, old_delay, old_use); in __pm_runtime_use_autosuspend()
1633 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1641 void pm_runtime_init(struct device *dev) in pm_runtime_init() argument
1643 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1644 dev->power.idle_notification = false; in pm_runtime_init()
1646 dev->power.disable_depth = 1; in pm_runtime_init()
1647 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1649 dev->power.runtime_error = 0; in pm_runtime_init()
1651 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1652 pm_suspend_ignore_children(dev, false); in pm_runtime_init()
1653 dev->power.runtime_auto = true; in pm_runtime_init()
1655 dev->power.request_pending = false; in pm_runtime_init()
1656 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1657 dev->power.deferred_resume = false; in pm_runtime_init()
1658 dev->power.needs_force_resume = 0; in pm_runtime_init()
1659 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1661 dev->power.timer_expires = 0; in pm_runtime_init()
1662 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1663 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1665 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1672 void pm_runtime_reinit(struct device *dev) in pm_runtime_reinit() argument
1674 if (!pm_runtime_enabled(dev)) { in pm_runtime_reinit()
1675 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1676 pm_runtime_set_suspended(dev); in pm_runtime_reinit()
1677 if (dev->power.irq_safe) { in pm_runtime_reinit()
1678 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1679 dev->power.irq_safe = 0; in pm_runtime_reinit()
1680 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1681 if (dev->parent) in pm_runtime_reinit()
1682 pm_runtime_put(dev->parent); in pm_runtime_reinit()
1691 void pm_runtime_remove(struct device *dev) in pm_runtime_remove() argument
1693 __pm_runtime_disable(dev, false); in pm_runtime_remove()
1694 pm_runtime_reinit(dev); in pm_runtime_remove()
1701 void pm_runtime_get_suppliers(struct device *dev) in pm_runtime_get_suppliers() argument
1708 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_get_suppliers()
1723 void pm_runtime_put_suppliers(struct device *dev) in pm_runtime_put_suppliers() argument
1732 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_put_suppliers()
1736 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1737 put = pm_runtime_status_suspended(dev) && in pm_runtime_put_suppliers()
1739 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1747 void pm_runtime_new_link(struct device *dev) in pm_runtime_new_link() argument
1749 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1750 dev->power.links_count++; in pm_runtime_new_link()
1751 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1754 static void pm_runtime_drop_link_count(struct device *dev) in pm_runtime_drop_link_count() argument
1756 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1757 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1758 dev->power.links_count--; in pm_runtime_drop_link_count()
1759 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1780 static bool pm_runtime_need_not_resume(struct device *dev) in pm_runtime_need_not_resume() argument
1782 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1783 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1784 dev->power.ignore_children); in pm_runtime_need_not_resume()
1804 int pm_runtime_force_suspend(struct device *dev) in pm_runtime_force_suspend() argument
1809 pm_runtime_disable(dev); in pm_runtime_force_suspend()
1810 if (pm_runtime_status_suspended(dev)) in pm_runtime_force_suspend()
1813 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in pm_runtime_force_suspend()
1815 ret = callback ? callback(dev) : 0; in pm_runtime_force_suspend()
1825 if (pm_runtime_need_not_resume(dev)) { in pm_runtime_force_suspend()
1826 pm_runtime_set_suspended(dev); in pm_runtime_force_suspend()
1828 __update_runtime_status(dev, RPM_SUSPENDED); in pm_runtime_force_suspend()
1829 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1835 pm_runtime_enable(dev); in pm_runtime_force_suspend()
1852 int pm_runtime_force_resume(struct device *dev) in pm_runtime_force_resume() argument
1857 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1864 __update_runtime_status(dev, RPM_ACTIVE); in pm_runtime_force_resume()
1866 callback = RPM_GET_CALLBACK(dev, runtime_resume); in pm_runtime_force_resume()
1868 ret = callback ? callback(dev) : 0; in pm_runtime_force_resume()
1870 pm_runtime_set_suspended(dev); in pm_runtime_force_resume()
1874 pm_runtime_mark_last_busy(dev); in pm_runtime_force_resume()
1876 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()
1877 pm_runtime_enable(dev); in pm_runtime_force_resume()