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 callback = RPM_GET_CALLBACK(dev, runtime_idle); in rpm_idle()
470 if (!callback || dev->power.no_callbacks) in rpm_idle()
475 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
476 if (!dev->power.request_pending) { in rpm_idle()
477 dev->power.request_pending = true; in rpm_idle()
478 queue_work(pm_wq, &dev->power.work); in rpm_idle()
480 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0); in rpm_idle()
484 dev->power.idle_notification = true; in rpm_idle()
486 if (dev->power.irq_safe) in rpm_idle()
487 spin_unlock(&dev->power.lock); in rpm_idle()
489 spin_unlock_irq(&dev->power.lock); in rpm_idle()
491 retval = callback(dev); in rpm_idle()
493 if (dev->power.irq_safe) in rpm_idle()
494 spin_lock(&dev->power.lock); in rpm_idle()
496 spin_lock_irq(&dev->power.lock); in rpm_idle()
498 dev->power.idle_notification = false; in rpm_idle()
499 wake_up_all(&dev->power.wait_queue); in rpm_idle()
502 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_idle()
503 return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); in rpm_idle()
511 static int rpm_callback(int (*cb)(struct device *), struct device *dev) in rpm_callback() argument
518 if (dev->power.memalloc_noio) { in rpm_callback()
531 retval = __rpm_callback(cb, dev); in rpm_callback()
534 retval = __rpm_callback(cb, dev); in rpm_callback()
537 dev->power.runtime_error = retval; in rpm_callback()
562 static int rpm_suspend(struct device *dev, int rpmflags) in rpm_suspend() argument
563 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
569 trace_rpm_suspend_rcuidle(dev, rpmflags); in rpm_suspend()
572 retval = rpm_check_suspend_allowed(dev); in rpm_suspend()
577 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
584 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
585 u64 expires = pm_runtime_autosuspend_expiration(dev); in rpm_suspend()
589 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
598 if (!(dev->power.timer_expires && in rpm_suspend()
599 dev->power.timer_expires <= expires)) { in rpm_suspend()
604 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
607 dev->power.timer_expires = expires; in rpm_suspend()
608 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
613 dev->power.timer_autosuspends = 1; in rpm_suspend()
619 pm_runtime_cancel_pending(dev); in rpm_suspend()
621 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
629 if (dev->power.irq_safe) { in rpm_suspend()
630 spin_unlock(&dev->power.lock); in rpm_suspend()
634 spin_lock(&dev->power.lock); in rpm_suspend()
640 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
642 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
645 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
649 spin_lock_irq(&dev->power.lock); in rpm_suspend()
651 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
655 if (dev->power.no_callbacks) in rpm_suspend()
660 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
662 if (!dev->power.request_pending) { in rpm_suspend()
663 dev->power.request_pending = true; in rpm_suspend()
664 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
669 __update_runtime_status(dev, RPM_SUSPENDING); in rpm_suspend()
671 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in rpm_suspend()
673 dev_pm_enable_wake_irq_check(dev, true); in rpm_suspend()
674 retval = rpm_callback(callback, dev); in rpm_suspend()
679 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_suspend()
680 pm_runtime_deactivate_timer(dev); in rpm_suspend()
682 if (dev->parent) { in rpm_suspend()
683 parent = dev->parent; in rpm_suspend()
686 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
688 if (dev->power.deferred_resume) { in rpm_suspend()
689 dev->power.deferred_resume = false; in rpm_suspend()
690 rpm_resume(dev, 0); in rpm_suspend()
695 if (dev->power.irq_safe) in rpm_suspend()
700 spin_unlock(&dev->power.lock); in rpm_suspend()
706 spin_lock(&dev->power.lock); in rpm_suspend()
709 if (dev->power.links_count > 0) { in rpm_suspend()
710 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
712 rpm_suspend_suppliers(dev); in rpm_suspend()
714 spin_lock_irq(&dev->power.lock); in rpm_suspend()
718 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_suspend()
723 dev_pm_disable_wake_irq_check(dev); in rpm_suspend()
724 __update_runtime_status(dev, RPM_ACTIVE); in rpm_suspend()
725 dev->power.deferred_resume = false; in rpm_suspend()
726 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
729 dev->power.runtime_error = 0; in rpm_suspend()
738 pm_runtime_autosuspend_expiration(dev) != 0) in rpm_suspend()
741 pm_runtime_cancel_pending(dev); in rpm_suspend()
763 static int rpm_resume(struct device *dev, int rpmflags) in rpm_resume() argument
764 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
770 trace_rpm_resume_rcuidle(dev, rpmflags); in rpm_resume()
773 if (dev->power.runtime_error) in rpm_resume()
775 else if (dev->power.disable_depth == 1 && dev->power.is_suspended in rpm_resume()
776 && dev->power.runtime_status == RPM_ACTIVE) in rpm_resume()
778 else if (dev->power.disable_depth > 0) in rpm_resume()
789 dev->power.request = RPM_REQ_NONE; in rpm_resume()
790 if (!dev->power.timer_autosuspends) in rpm_resume()
791 pm_runtime_deactivate_timer(dev); in rpm_resume()
793 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
798 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
799 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
803 if (dev->power.runtime_status == RPM_SUSPENDING) in rpm_resume()
804 dev->power.deferred_resume = true; in rpm_resume()
810 if (dev->power.irq_safe) { in rpm_resume()
811 spin_unlock(&dev->power.lock); in rpm_resume()
815 spin_lock(&dev->power.lock); in rpm_resume()
821 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
823 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
824 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
827 spin_unlock_irq(&dev->power.lock); in rpm_resume()
831 spin_lock_irq(&dev->power.lock); in rpm_resume()
833 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
842 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
843 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
844 if (dev->parent->power.disable_depth > 0 in rpm_resume()
845 || dev->parent->power.ignore_children in rpm_resume()
846 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
847 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
848 spin_unlock(&dev->parent->power.lock); in rpm_resume()
852 spin_unlock(&dev->parent->power.lock); in rpm_resume()
857 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
858 if (!dev->power.request_pending) { in rpm_resume()
859 dev->power.request_pending = true; in rpm_resume()
860 queue_work(pm_wq, &dev->power.work); in rpm_resume()
866 if (!parent && dev->parent) { in rpm_resume()
872 parent = dev->parent; in rpm_resume()
873 if (dev->power.irq_safe) in rpm_resume()
875 spin_unlock(&dev->power.lock); in rpm_resume()
892 spin_lock(&dev->power.lock); in rpm_resume()
899 if (dev->power.no_callbacks) in rpm_resume()
902 __update_runtime_status(dev, RPM_RESUMING); in rpm_resume()
904 callback = RPM_GET_CALLBACK(dev, runtime_resume); in rpm_resume()
906 dev_pm_disable_wake_irq_check(dev); in rpm_resume()
907 retval = rpm_callback(callback, dev); in rpm_resume()
909 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_resume()
910 pm_runtime_cancel_pending(dev); in rpm_resume()
911 dev_pm_enable_wake_irq_check(dev, false); in rpm_resume()
914 __update_runtime_status(dev, RPM_ACTIVE); in rpm_resume()
915 pm_runtime_mark_last_busy(dev); in rpm_resume()
919 wake_up_all(&dev->power.wait_queue); in rpm_resume()
922 rpm_idle(dev, RPM_ASYNC); in rpm_resume()
925 if (parent && !dev->power.irq_safe) { in rpm_resume()
926 spin_unlock_irq(&dev->power.lock); in rpm_resume()
930 spin_lock_irq(&dev->power.lock); in rpm_resume()
933 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_resume()
947 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work() local
950 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
952 if (!dev->power.request_pending) in pm_runtime_work()
955 req = dev->power.request; in pm_runtime_work()
956 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
957 dev->power.request_pending = false; in pm_runtime_work()
963 rpm_idle(dev, RPM_NOWAIT); in pm_runtime_work()
966 rpm_suspend(dev, RPM_NOWAIT); in pm_runtime_work()
969 rpm_suspend(dev, RPM_NOWAIT | RPM_AUTO); in pm_runtime_work()
972 rpm_resume(dev, RPM_NOWAIT); in pm_runtime_work()
977 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
988 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn() local
992 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
994 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
1000 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
1001 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
1005 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1015 int pm_schedule_suspend(struct device *dev, unsigned int delay) in pm_schedule_suspend() argument
1021 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1024 retval = rpm_suspend(dev, RPM_ASYNC); in pm_schedule_suspend()
1028 retval = rpm_check_suspend_allowed(dev); in pm_schedule_suspend()
1033 pm_runtime_cancel_pending(dev); in pm_schedule_suspend()
1036 dev->power.timer_expires = expires; in pm_schedule_suspend()
1037 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1038 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1041 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1059 int __pm_runtime_idle(struct device *dev, int rpmflags) in __pm_runtime_idle() argument
1065 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_idle()
1066 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_idle()
1071 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1073 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1074 retval = rpm_idle(dev, rpmflags); in __pm_runtime_idle()
1075 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1093 int __pm_runtime_suspend(struct device *dev, int rpmflags) in __pm_runtime_suspend() argument
1099 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_suspend()
1100 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_suspend()
1105 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1107 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1108 retval = rpm_suspend(dev, rpmflags); in __pm_runtime_suspend()
1109 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1126 int __pm_runtime_resume(struct device *dev, int rpmflags) in __pm_runtime_resume() argument
1131 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1132 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1135 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1137 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1138 retval = rpm_resume(dev, rpmflags); in __pm_runtime_resume()
1139 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1167 int pm_runtime_get_if_active(struct device *dev, bool ign_usage_count) in pm_runtime_get_if_active() argument
1172 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1173 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1175 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1179 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1181 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1183 trace_rpm_usage_rcuidle(dev, 0); in pm_runtime_get_if_active()
1184 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1214 int __pm_runtime_set_status(struct device *dev, unsigned int status) in __pm_runtime_set_status() argument
1216 struct device *parent = dev->parent; in __pm_runtime_set_status()
1223 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1229 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1230 dev->power.disable_depth++; in __pm_runtime_set_status()
1234 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1248 error = rpm_get_suppliers(dev); in __pm_runtime_set_status()
1255 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1257 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1274 dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n", in __pm_runtime_set_status()
1275 dev_name(dev), in __pm_runtime_set_status()
1278 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1291 __update_runtime_status(dev, status); in __pm_runtime_set_status()
1293 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1296 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1304 rpm_put_suppliers(dev); in __pm_runtime_set_status()
1309 pm_runtime_enable(dev); in __pm_runtime_set_status()
1324 static void __pm_runtime_barrier(struct device *dev) in __pm_runtime_barrier() argument
1326 pm_runtime_deactivate_timer(dev); in __pm_runtime_barrier()
1328 if (dev->power.request_pending) { in __pm_runtime_barrier()
1329 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1330 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1332 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1334 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1335 dev->power.request_pending = false; in __pm_runtime_barrier()
1338 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1339 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1340 || dev->power.idle_notification) { in __pm_runtime_barrier()
1345 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1347 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1348 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1349 && !dev->power.idle_notification) in __pm_runtime_barrier()
1351 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1355 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1357 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1375 int pm_runtime_barrier(struct device *dev) in pm_runtime_barrier() argument
1379 pm_runtime_get_noresume(dev); in pm_runtime_barrier()
1380 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1382 if (dev->power.request_pending in pm_runtime_barrier()
1383 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1384 rpm_resume(dev, 0); in pm_runtime_barrier()
1388 __pm_runtime_barrier(dev); in pm_runtime_barrier()
1390 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1391 pm_runtime_put_noidle(dev); in pm_runtime_barrier()
1411 void __pm_runtime_disable(struct device *dev, bool check_resume) in __pm_runtime_disable() argument
1413 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1415 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1416 dev->power.disable_depth++; in __pm_runtime_disable()
1425 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1426 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1431 pm_runtime_get_noresume(dev); in __pm_runtime_disable()
1433 rpm_resume(dev, 0); in __pm_runtime_disable()
1435 pm_runtime_put_noidle(dev); in __pm_runtime_disable()
1439 update_pm_runtime_accounting(dev); in __pm_runtime_disable()
1441 if (!dev->power.disable_depth++) in __pm_runtime_disable()
1442 __pm_runtime_barrier(dev); in __pm_runtime_disable()
1445 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1453 void pm_runtime_enable(struct device *dev) in pm_runtime_enable() argument
1457 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1459 if (dev->power.disable_depth > 0) { in pm_runtime_enable()
1460 dev->power.disable_depth--; in pm_runtime_enable()
1463 if (!dev->power.disable_depth) in pm_runtime_enable()
1464 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1466 dev_warn(dev, "Unbalanced %s!\n", __func__); in pm_runtime_enable()
1469 WARN(!dev->power.disable_depth && in pm_runtime_enable()
1470 dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1471 !dev->power.ignore_children && in pm_runtime_enable()
1472 atomic_read(&dev->power.child_count) > 0, in pm_runtime_enable()
1474 dev_name(dev)); in pm_runtime_enable()
1476 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1488 void pm_runtime_forbid(struct device *dev) in pm_runtime_forbid() argument
1490 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1491 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1494 dev->power.runtime_auto = false; in pm_runtime_forbid()
1495 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1496 rpm_resume(dev, 0); in pm_runtime_forbid()
1499 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1509 void pm_runtime_allow(struct device *dev) in pm_runtime_allow() argument
1511 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1512 if (dev->power.runtime_auto) in pm_runtime_allow()
1515 dev->power.runtime_auto = true; in pm_runtime_allow()
1516 if (atomic_dec_and_test(&dev->power.usage_count)) in pm_runtime_allow()
1517 rpm_idle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1519 trace_rpm_usage_rcuidle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1522 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1534 void pm_runtime_no_callbacks(struct device *dev) in pm_runtime_no_callbacks() argument
1536 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1537 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1538 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1539 if (device_is_registered(dev)) in pm_runtime_no_callbacks()
1540 rpm_sysfs_remove(dev); in pm_runtime_no_callbacks()
1555 void pm_runtime_irq_safe(struct device *dev) in pm_runtime_irq_safe() argument
1557 if (dev->parent) in pm_runtime_irq_safe()
1558 pm_runtime_get_sync(dev->parent); in pm_runtime_irq_safe()
1559 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1560 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1561 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1576 static void update_autosuspend(struct device *dev, int old_delay, int old_use) in update_autosuspend() argument
1578 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1581 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1585 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1586 rpm_resume(dev, 0); in update_autosuspend()
1588 trace_rpm_usage_rcuidle(dev, 0); in update_autosuspend()
1597 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1600 rpm_idle(dev, RPM_AUTO); in update_autosuspend()
1613 void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) in pm_runtime_set_autosuspend_delay() argument
1617 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1618 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1619 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1620 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1621 update_autosuspend(dev, old_delay, old_use); in pm_runtime_set_autosuspend_delay()
1622 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1634 void __pm_runtime_use_autosuspend(struct device *dev, bool use) in __pm_runtime_use_autosuspend() argument
1638 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1639 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1640 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1641 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1642 update_autosuspend(dev, old_delay, old_use); in __pm_runtime_use_autosuspend()
1643 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1651 void pm_runtime_init(struct device *dev) in pm_runtime_init() argument
1653 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1654 dev->power.idle_notification = false; in pm_runtime_init()
1656 dev->power.disable_depth = 1; in pm_runtime_init()
1657 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1659 dev->power.runtime_error = 0; in pm_runtime_init()
1661 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1662 pm_suspend_ignore_children(dev, false); in pm_runtime_init()
1663 dev->power.runtime_auto = true; in pm_runtime_init()
1665 dev->power.request_pending = false; in pm_runtime_init()
1666 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1667 dev->power.deferred_resume = false; in pm_runtime_init()
1668 dev->power.needs_force_resume = 0; in pm_runtime_init()
1669 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1671 dev->power.timer_expires = 0; in pm_runtime_init()
1672 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1673 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1675 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1682 void pm_runtime_reinit(struct device *dev) in pm_runtime_reinit() argument
1684 if (!pm_runtime_enabled(dev)) { in pm_runtime_reinit()
1685 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1686 pm_runtime_set_suspended(dev); in pm_runtime_reinit()
1687 if (dev->power.irq_safe) { in pm_runtime_reinit()
1688 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1689 dev->power.irq_safe = 0; in pm_runtime_reinit()
1690 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1691 if (dev->parent) in pm_runtime_reinit()
1692 pm_runtime_put(dev->parent); in pm_runtime_reinit()
1701 void pm_runtime_remove(struct device *dev) in pm_runtime_remove() argument
1703 __pm_runtime_disable(dev, false); in pm_runtime_remove()
1704 pm_runtime_reinit(dev); in pm_runtime_remove()
1711 void pm_runtime_get_suppliers(struct device *dev) in pm_runtime_get_suppliers() argument
1718 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_get_suppliers()
1733 void pm_runtime_put_suppliers(struct device *dev) in pm_runtime_put_suppliers() argument
1742 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_put_suppliers()
1746 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1747 put = pm_runtime_status_suspended(dev) && in pm_runtime_put_suppliers()
1749 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1757 void pm_runtime_new_link(struct device *dev) in pm_runtime_new_link() argument
1759 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1760 dev->power.links_count++; in pm_runtime_new_link()
1761 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1764 static void pm_runtime_drop_link_count(struct device *dev) in pm_runtime_drop_link_count() argument
1766 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1767 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1768 dev->power.links_count--; in pm_runtime_drop_link_count()
1769 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1790 static bool pm_runtime_need_not_resume(struct device *dev) in pm_runtime_need_not_resume() argument
1792 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1793 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1794 dev->power.ignore_children); in pm_runtime_need_not_resume()
1814 int pm_runtime_force_suspend(struct device *dev) in pm_runtime_force_suspend() argument
1819 pm_runtime_disable(dev); in pm_runtime_force_suspend()
1820 if (pm_runtime_status_suspended(dev)) in pm_runtime_force_suspend()
1823 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in pm_runtime_force_suspend()
1825 ret = callback ? callback(dev) : 0; in pm_runtime_force_suspend()
1835 if (pm_runtime_need_not_resume(dev)) { in pm_runtime_force_suspend()
1836 pm_runtime_set_suspended(dev); in pm_runtime_force_suspend()
1838 __update_runtime_status(dev, RPM_SUSPENDED); in pm_runtime_force_suspend()
1839 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1845 pm_runtime_enable(dev); in pm_runtime_force_suspend()
1862 int pm_runtime_force_resume(struct device *dev) in pm_runtime_force_resume() argument
1867 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1874 __update_runtime_status(dev, RPM_ACTIVE); in pm_runtime_force_resume()
1876 callback = RPM_GET_CALLBACK(dev, runtime_resume); in pm_runtime_force_resume()
1878 ret = callback ? callback(dev) : 0; in pm_runtime_force_resume()
1880 pm_runtime_set_suspended(dev); in pm_runtime_force_resume()
1884 pm_runtime_mark_last_busy(dev); in pm_runtime_force_resume()
1886 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()
1887 pm_runtime_enable(dev); in pm_runtime_force_resume()