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()
309 static void rpm_put_suppliers(struct device *dev) in rpm_put_suppliers() argument
313 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in rpm_put_suppliers()
328 static int __rpm_callback(int (*cb)(struct device *), struct device *dev) in __rpm_callback() argument
329 __releases(&dev->power.lock) __acquires(&dev->power.lock) in __rpm_callback()
332 bool use_links = dev->power.links_count > 0; in __rpm_callback()
334 if (dev->power.irq_safe) { in __rpm_callback()
335 spin_unlock(&dev->power.lock); in __rpm_callback()
337 spin_unlock_irq(&dev->power.lock); in __rpm_callback()
346 if (use_links && dev->power.runtime_status == RPM_RESUMING) { in __rpm_callback()
349 retval = rpm_get_suppliers(dev); in __rpm_callback()
357 retval = cb(dev); in __rpm_callback()
359 if (dev->power.irq_safe) { in __rpm_callback()
360 spin_lock(&dev->power.lock); in __rpm_callback()
370 && ((dev->power.runtime_status == RPM_SUSPENDING && !retval) in __rpm_callback()
371 || (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
375 rpm_put_suppliers(dev); in __rpm_callback()
380 spin_lock_irq(&dev->power.lock); in __rpm_callback()
399 static int rpm_idle(struct device *dev, int rpmflags) in rpm_idle() argument
404 trace_rpm_idle_rcuidle(dev, rpmflags); in rpm_idle()
405 retval = rpm_check_suspend_allowed(dev); in rpm_idle()
410 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
417 else if (dev->power.request_pending && in rpm_idle()
418 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
422 else if (dev->power.idle_notification) in rpm_idle()
428 dev->power.request = RPM_REQ_NONE; in rpm_idle()
430 if (dev->power.no_callbacks) in rpm_idle()
435 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
436 if (!dev->power.request_pending) { in rpm_idle()
437 dev->power.request_pending = true; in rpm_idle()
438 queue_work(pm_wq, &dev->power.work); in rpm_idle()
440 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0); in rpm_idle()
444 dev->power.idle_notification = true; in rpm_idle()
446 callback = RPM_GET_CALLBACK(dev, runtime_idle); in rpm_idle()
449 retval = __rpm_callback(callback, dev); in rpm_idle()
451 dev->power.idle_notification = false; in rpm_idle()
452 wake_up_all(&dev->power.wait_queue); in rpm_idle()
455 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_idle()
456 return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); in rpm_idle()
464 static int rpm_callback(int (*cb)(struct device *), struct device *dev) in rpm_callback() argument
471 if (dev->power.memalloc_noio) { in rpm_callback()
484 retval = __rpm_callback(cb, dev); in rpm_callback()
487 retval = __rpm_callback(cb, dev); in rpm_callback()
490 dev->power.runtime_error = retval; in rpm_callback()
515 static int rpm_suspend(struct device *dev, int rpmflags) in rpm_suspend() argument
516 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
522 trace_rpm_suspend_rcuidle(dev, rpmflags); in rpm_suspend()
525 retval = rpm_check_suspend_allowed(dev); in rpm_suspend()
531 else if (dev->power.runtime_status == RPM_RESUMING && in rpm_suspend()
539 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
540 u64 expires = pm_runtime_autosuspend_expiration(dev); in rpm_suspend()
544 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
553 if (!(dev->power.timer_expires && in rpm_suspend()
554 dev->power.timer_expires <= expires)) { in rpm_suspend()
559 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
562 dev->power.timer_expires = expires; in rpm_suspend()
563 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
568 dev->power.timer_autosuspends = 1; in rpm_suspend()
574 pm_runtime_cancel_pending(dev); in rpm_suspend()
576 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
584 if (dev->power.irq_safe) { in rpm_suspend()
585 spin_unlock(&dev->power.lock); in rpm_suspend()
589 spin_lock(&dev->power.lock); in rpm_suspend()
595 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
597 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
600 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
604 spin_lock_irq(&dev->power.lock); in rpm_suspend()
606 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
610 if (dev->power.no_callbacks) in rpm_suspend()
615 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
617 if (!dev->power.request_pending) { in rpm_suspend()
618 dev->power.request_pending = true; in rpm_suspend()
619 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
624 __update_runtime_status(dev, RPM_SUSPENDING); in rpm_suspend()
626 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in rpm_suspend()
628 dev_pm_enable_wake_irq_check(dev, true); in rpm_suspend()
629 retval = rpm_callback(callback, dev); in rpm_suspend()
634 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_suspend()
635 pm_runtime_deactivate_timer(dev); in rpm_suspend()
637 if (dev->parent) { in rpm_suspend()
638 parent = dev->parent; in rpm_suspend()
641 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
643 if (dev->power.deferred_resume) { in rpm_suspend()
644 dev->power.deferred_resume = false; in rpm_suspend()
645 rpm_resume(dev, 0); in rpm_suspend()
651 if (parent && !parent->power.ignore_children && !dev->power.irq_safe) { in rpm_suspend()
652 spin_unlock(&dev->power.lock); in rpm_suspend()
658 spin_lock(&dev->power.lock); in rpm_suspend()
662 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_suspend()
667 dev_pm_disable_wake_irq_check(dev); in rpm_suspend()
668 __update_runtime_status(dev, RPM_ACTIVE); in rpm_suspend()
669 dev->power.deferred_resume = false; in rpm_suspend()
670 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
673 dev->power.runtime_error = 0; in rpm_suspend()
682 pm_runtime_autosuspend_expiration(dev) != 0) in rpm_suspend()
685 pm_runtime_cancel_pending(dev); in rpm_suspend()
707 static int rpm_resume(struct device *dev, int rpmflags) in rpm_resume() argument
708 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
714 trace_rpm_resume_rcuidle(dev, rpmflags); in rpm_resume()
717 if (dev->power.runtime_error) in rpm_resume()
719 else if (dev->power.disable_depth == 1 && dev->power.is_suspended in rpm_resume()
720 && dev->power.runtime_status == RPM_ACTIVE) in rpm_resume()
722 else if (dev->power.disable_depth > 0) in rpm_resume()
733 dev->power.request = RPM_REQ_NONE; in rpm_resume()
734 if (!dev->power.timer_autosuspends) in rpm_resume()
735 pm_runtime_deactivate_timer(dev); in rpm_resume()
737 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
742 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
743 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
747 if (dev->power.runtime_status == RPM_SUSPENDING) in rpm_resume()
748 dev->power.deferred_resume = true; in rpm_resume()
754 if (dev->power.irq_safe) { in rpm_resume()
755 spin_unlock(&dev->power.lock); in rpm_resume()
759 spin_lock(&dev->power.lock); in rpm_resume()
765 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
767 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
768 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
771 spin_unlock_irq(&dev->power.lock); in rpm_resume()
775 spin_lock_irq(&dev->power.lock); in rpm_resume()
777 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
786 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
787 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
788 if (dev->parent->power.disable_depth > 0 in rpm_resume()
789 || dev->parent->power.ignore_children in rpm_resume()
790 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
791 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
792 spin_unlock(&dev->parent->power.lock); in rpm_resume()
796 spin_unlock(&dev->parent->power.lock); in rpm_resume()
801 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
802 if (!dev->power.request_pending) { in rpm_resume()
803 dev->power.request_pending = true; in rpm_resume()
804 queue_work(pm_wq, &dev->power.work); in rpm_resume()
810 if (!parent && dev->parent) { in rpm_resume()
816 parent = dev->parent; in rpm_resume()
817 if (dev->power.irq_safe) in rpm_resume()
819 spin_unlock(&dev->power.lock); in rpm_resume()
836 spin_lock(&dev->power.lock); in rpm_resume()
843 if (dev->power.no_callbacks) in rpm_resume()
846 __update_runtime_status(dev, RPM_RESUMING); in rpm_resume()
848 callback = RPM_GET_CALLBACK(dev, runtime_resume); in rpm_resume()
850 dev_pm_disable_wake_irq_check(dev); in rpm_resume()
851 retval = rpm_callback(callback, dev); in rpm_resume()
853 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_resume()
854 pm_runtime_cancel_pending(dev); in rpm_resume()
855 dev_pm_enable_wake_irq_check(dev, false); in rpm_resume()
858 __update_runtime_status(dev, RPM_ACTIVE); in rpm_resume()
859 pm_runtime_mark_last_busy(dev); in rpm_resume()
863 wake_up_all(&dev->power.wait_queue); in rpm_resume()
866 rpm_idle(dev, RPM_ASYNC); in rpm_resume()
869 if (parent && !dev->power.irq_safe) { in rpm_resume()
870 spin_unlock_irq(&dev->power.lock); in rpm_resume()
874 spin_lock_irq(&dev->power.lock); in rpm_resume()
877 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_resume()
891 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work() local
894 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
896 if (!dev->power.request_pending) in pm_runtime_work()
899 req = dev->power.request; in pm_runtime_work()
900 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
901 dev->power.request_pending = false; in pm_runtime_work()
907 rpm_idle(dev, RPM_NOWAIT); in pm_runtime_work()
910 rpm_suspend(dev, RPM_NOWAIT); in pm_runtime_work()
913 rpm_suspend(dev, RPM_NOWAIT | RPM_AUTO); in pm_runtime_work()
916 rpm_resume(dev, RPM_NOWAIT); in pm_runtime_work()
921 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
932 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn() local
936 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
938 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
944 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
945 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
949 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
959 int pm_schedule_suspend(struct device *dev, unsigned int delay) in pm_schedule_suspend() argument
965 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
968 retval = rpm_suspend(dev, RPM_ASYNC); in pm_schedule_suspend()
972 retval = rpm_check_suspend_allowed(dev); in pm_schedule_suspend()
977 pm_runtime_cancel_pending(dev); in pm_schedule_suspend()
980 dev->power.timer_expires = expires; in pm_schedule_suspend()
981 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
982 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
985 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1003 int __pm_runtime_idle(struct device *dev, int rpmflags) in __pm_runtime_idle() argument
1009 if (!atomic_dec_and_test(&dev->power.usage_count)) in __pm_runtime_idle()
1013 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1015 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1016 retval = rpm_idle(dev, rpmflags); in __pm_runtime_idle()
1017 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1035 int __pm_runtime_suspend(struct device *dev, int rpmflags) in __pm_runtime_suspend() argument
1041 if (!atomic_dec_and_test(&dev->power.usage_count)) in __pm_runtime_suspend()
1045 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1047 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1048 retval = rpm_suspend(dev, rpmflags); in __pm_runtime_suspend()
1049 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1066 int __pm_runtime_resume(struct device *dev, int rpmflags) in __pm_runtime_resume() argument
1071 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1072 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1075 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1077 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1078 retval = rpm_resume(dev, rpmflags); in __pm_runtime_resume()
1079 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1095 int pm_runtime_get_if_in_use(struct device *dev) in pm_runtime_get_if_in_use() argument
1100 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_in_use()
1101 retval = dev->power.disable_depth > 0 ? -EINVAL : in pm_runtime_get_if_in_use()
1102 dev->power.runtime_status == RPM_ACTIVE in pm_runtime_get_if_in_use()
1103 && atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_in_use()
1104 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_in_use()
1133 int __pm_runtime_set_status(struct device *dev, unsigned int status) in __pm_runtime_set_status() argument
1135 struct device *parent = dev->parent; in __pm_runtime_set_status()
1142 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1148 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1149 dev->power.disable_depth++; in __pm_runtime_set_status()
1153 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1167 error = rpm_get_suppliers(dev); in __pm_runtime_set_status()
1174 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1176 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1193 dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n", in __pm_runtime_set_status()
1194 dev_name(dev), in __pm_runtime_set_status()
1197 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1210 __update_runtime_status(dev, status); in __pm_runtime_set_status()
1212 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1215 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1223 rpm_put_suppliers(dev); in __pm_runtime_set_status()
1228 pm_runtime_enable(dev); in __pm_runtime_set_status()
1243 static void __pm_runtime_barrier(struct device *dev) in __pm_runtime_barrier() argument
1245 pm_runtime_deactivate_timer(dev); in __pm_runtime_barrier()
1247 if (dev->power.request_pending) { in __pm_runtime_barrier()
1248 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1249 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1251 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1253 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1254 dev->power.request_pending = false; in __pm_runtime_barrier()
1257 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1258 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1259 || dev->power.idle_notification) { in __pm_runtime_barrier()
1264 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1266 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1267 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1268 && !dev->power.idle_notification) in __pm_runtime_barrier()
1270 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1274 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1276 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1294 int pm_runtime_barrier(struct device *dev) in pm_runtime_barrier() argument
1298 pm_runtime_get_noresume(dev); in pm_runtime_barrier()
1299 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1301 if (dev->power.request_pending in pm_runtime_barrier()
1302 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1303 rpm_resume(dev, 0); in pm_runtime_barrier()
1307 __pm_runtime_barrier(dev); in pm_runtime_barrier()
1309 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1310 pm_runtime_put_noidle(dev); in pm_runtime_barrier()
1330 void __pm_runtime_disable(struct device *dev, bool check_resume) in __pm_runtime_disable() argument
1332 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1334 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1335 dev->power.disable_depth++; in __pm_runtime_disable()
1344 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1345 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1350 pm_runtime_get_noresume(dev); in __pm_runtime_disable()
1352 rpm_resume(dev, 0); in __pm_runtime_disable()
1354 pm_runtime_put_noidle(dev); in __pm_runtime_disable()
1358 update_pm_runtime_accounting(dev); in __pm_runtime_disable()
1360 if (!dev->power.disable_depth++) in __pm_runtime_disable()
1361 __pm_runtime_barrier(dev); in __pm_runtime_disable()
1364 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1372 void pm_runtime_enable(struct device *dev) in pm_runtime_enable() argument
1376 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1378 if (dev->power.disable_depth > 0) { in pm_runtime_enable()
1379 dev->power.disable_depth--; in pm_runtime_enable()
1382 if (!dev->power.disable_depth) in pm_runtime_enable()
1383 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1385 dev_warn(dev, "Unbalanced %s!\n", __func__); in pm_runtime_enable()
1388 WARN(!dev->power.disable_depth && in pm_runtime_enable()
1389 dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1390 !dev->power.ignore_children && in pm_runtime_enable()
1391 atomic_read(&dev->power.child_count) > 0, in pm_runtime_enable()
1393 dev_name(dev)); in pm_runtime_enable()
1395 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1407 void pm_runtime_forbid(struct device *dev) in pm_runtime_forbid() argument
1409 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1410 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1413 dev->power.runtime_auto = false; in pm_runtime_forbid()
1414 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1415 rpm_resume(dev, 0); in pm_runtime_forbid()
1418 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1428 void pm_runtime_allow(struct device *dev) in pm_runtime_allow() argument
1430 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1431 if (dev->power.runtime_auto) in pm_runtime_allow()
1434 dev->power.runtime_auto = true; in pm_runtime_allow()
1435 if (atomic_dec_and_test(&dev->power.usage_count)) in pm_runtime_allow()
1436 rpm_idle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1439 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1451 void pm_runtime_no_callbacks(struct device *dev) in pm_runtime_no_callbacks() argument
1453 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1454 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1455 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1456 if (device_is_registered(dev)) in pm_runtime_no_callbacks()
1457 rpm_sysfs_remove(dev); in pm_runtime_no_callbacks()
1472 void pm_runtime_irq_safe(struct device *dev) in pm_runtime_irq_safe() argument
1474 if (dev->parent) in pm_runtime_irq_safe()
1475 pm_runtime_get_sync(dev->parent); in pm_runtime_irq_safe()
1476 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1477 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1478 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1493 static void update_autosuspend(struct device *dev, int old_delay, int old_use) in update_autosuspend() argument
1495 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1498 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1502 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1503 rpm_resume(dev, 0); in update_autosuspend()
1512 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1515 rpm_idle(dev, RPM_AUTO); in update_autosuspend()
1528 void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) in pm_runtime_set_autosuspend_delay() argument
1532 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1533 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1534 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1535 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1536 update_autosuspend(dev, old_delay, old_use); in pm_runtime_set_autosuspend_delay()
1537 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1549 void __pm_runtime_use_autosuspend(struct device *dev, bool use) in __pm_runtime_use_autosuspend() argument
1553 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1554 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1555 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1556 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1557 update_autosuspend(dev, old_delay, old_use); in __pm_runtime_use_autosuspend()
1558 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1566 void pm_runtime_init(struct device *dev) in pm_runtime_init() argument
1568 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1569 dev->power.idle_notification = false; in pm_runtime_init()
1571 dev->power.disable_depth = 1; in pm_runtime_init()
1572 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1574 dev->power.runtime_error = 0; in pm_runtime_init()
1576 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1577 pm_suspend_ignore_children(dev, false); in pm_runtime_init()
1578 dev->power.runtime_auto = true; in pm_runtime_init()
1580 dev->power.request_pending = false; in pm_runtime_init()
1581 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1582 dev->power.deferred_resume = false; in pm_runtime_init()
1583 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1585 dev->power.timer_expires = 0; in pm_runtime_init()
1586 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1587 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1589 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1596 void pm_runtime_reinit(struct device *dev) in pm_runtime_reinit() argument
1598 if (!pm_runtime_enabled(dev)) { in pm_runtime_reinit()
1599 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1600 pm_runtime_set_suspended(dev); in pm_runtime_reinit()
1601 if (dev->power.irq_safe) { in pm_runtime_reinit()
1602 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1603 dev->power.irq_safe = 0; in pm_runtime_reinit()
1604 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1605 if (dev->parent) in pm_runtime_reinit()
1606 pm_runtime_put(dev->parent); in pm_runtime_reinit()
1615 void pm_runtime_remove(struct device *dev) in pm_runtime_remove() argument
1617 __pm_runtime_disable(dev, false); in pm_runtime_remove()
1618 pm_runtime_reinit(dev); in pm_runtime_remove()
1638 void pm_runtime_clean_up_links(struct device *dev) in pm_runtime_clean_up_links() argument
1645 list_for_each_entry_rcu(link, &dev->links.consumers, s_node, in pm_runtime_clean_up_links()
1651 pm_runtime_put_noidle(dev); in pm_runtime_clean_up_links()
1661 void pm_runtime_get_suppliers(struct device *dev) in pm_runtime_get_suppliers() argument
1668 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_get_suppliers()
1683 void pm_runtime_put_suppliers(struct device *dev) in pm_runtime_put_suppliers() argument
1690 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_put_suppliers()
1701 void pm_runtime_new_link(struct device *dev) in pm_runtime_new_link() argument
1703 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1704 dev->power.links_count++; in pm_runtime_new_link()
1705 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1708 void pm_runtime_drop_link(struct device *dev) in pm_runtime_drop_link() argument
1710 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link()
1711 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link()
1712 dev->power.links_count--; in pm_runtime_drop_link()
1713 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link()
1716 static bool pm_runtime_need_not_resume(struct device *dev) in pm_runtime_need_not_resume() argument
1718 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1719 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1720 dev->power.ignore_children); in pm_runtime_need_not_resume()
1740 int pm_runtime_force_suspend(struct device *dev) in pm_runtime_force_suspend() argument
1745 pm_runtime_disable(dev); in pm_runtime_force_suspend()
1746 if (pm_runtime_status_suspended(dev)) in pm_runtime_force_suspend()
1749 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in pm_runtime_force_suspend()
1751 ret = callback ? callback(dev) : 0; in pm_runtime_force_suspend()
1761 if (pm_runtime_need_not_resume(dev)) in pm_runtime_force_suspend()
1762 pm_runtime_set_suspended(dev); in pm_runtime_force_suspend()
1764 __update_runtime_status(dev, RPM_SUSPENDED); in pm_runtime_force_suspend()
1769 pm_runtime_enable(dev); in pm_runtime_force_suspend()
1786 int pm_runtime_force_resume(struct device *dev) in pm_runtime_force_resume() argument
1791 if (!pm_runtime_status_suspended(dev) || pm_runtime_need_not_resume(dev)) in pm_runtime_force_resume()
1798 __update_runtime_status(dev, RPM_ACTIVE); in pm_runtime_force_resume()
1800 callback = RPM_GET_CALLBACK(dev, runtime_resume); in pm_runtime_force_resume()
1802 ret = callback ? callback(dev) : 0; in pm_runtime_force_resume()
1804 pm_runtime_set_suspended(dev); in pm_runtime_force_resume()
1808 pm_runtime_mark_last_busy(dev); in pm_runtime_force_resume()
1810 pm_runtime_enable(dev); in pm_runtime_force_resume()