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)) 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()
395 retval = cb(dev); in __rpm_callback()
397 if (dev->power.irq_safe) { in __rpm_callback()
398 spin_lock(&dev->power.lock); in __rpm_callback()
408 && ((dev->power.runtime_status == RPM_SUSPENDING && !retval) in __rpm_callback()
409 || (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
412 __rpm_put_suppliers(dev, false); in __rpm_callback()
418 spin_lock_irq(&dev->power.lock); in __rpm_callback()
437 static int rpm_idle(struct device *dev, int rpmflags) in rpm_idle() argument
442 trace_rpm_idle_rcuidle(dev, rpmflags); in rpm_idle()
443 retval = rpm_check_suspend_allowed(dev); in rpm_idle()
448 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
455 else if (dev->power.request_pending && in rpm_idle()
456 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
460 else if (dev->power.idle_notification) in rpm_idle()
466 dev->power.request = RPM_REQ_NONE; in rpm_idle()
468 callback = RPM_GET_CALLBACK(dev, runtime_idle); in rpm_idle()
471 if (!callback || dev->power.no_callbacks) in rpm_idle()
476 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
477 if (!dev->power.request_pending) { in rpm_idle()
478 dev->power.request_pending = true; in rpm_idle()
479 queue_work(pm_wq, &dev->power.work); in rpm_idle()
481 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0); in rpm_idle()
485 dev->power.idle_notification = true; in rpm_idle()
487 retval = __rpm_callback(callback, dev); in rpm_idle()
489 dev->power.idle_notification = false; in rpm_idle()
490 wake_up_all(&dev->power.wait_queue); in rpm_idle()
493 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_idle()
494 return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); in rpm_idle()
502 static int rpm_callback(int (*cb)(struct device *), struct device *dev) in rpm_callback() argument
506 if (dev->power.memalloc_noio) { in rpm_callback()
519 retval = __rpm_callback(cb, dev); in rpm_callback()
522 retval = __rpm_callback(cb, dev); in rpm_callback()
525 dev->power.runtime_error = retval; in rpm_callback()
550 static int rpm_suspend(struct device *dev, int rpmflags) in rpm_suspend() argument
551 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
557 trace_rpm_suspend_rcuidle(dev, rpmflags); in rpm_suspend()
560 retval = rpm_check_suspend_allowed(dev); in rpm_suspend()
565 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
572 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
573 u64 expires = pm_runtime_autosuspend_expiration(dev); in rpm_suspend()
577 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
586 if (!(dev->power.timer_expires && in rpm_suspend()
587 dev->power.timer_expires <= expires)) { in rpm_suspend()
592 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
595 dev->power.timer_expires = expires; in rpm_suspend()
596 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
601 dev->power.timer_autosuspends = 1; in rpm_suspend()
607 pm_runtime_cancel_pending(dev); in rpm_suspend()
609 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
617 if (dev->power.irq_safe) { in rpm_suspend()
618 spin_unlock(&dev->power.lock); in rpm_suspend()
622 spin_lock(&dev->power.lock); in rpm_suspend()
628 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
630 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
633 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
637 spin_lock_irq(&dev->power.lock); in rpm_suspend()
639 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
643 if (dev->power.no_callbacks) in rpm_suspend()
648 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
650 if (!dev->power.request_pending) { in rpm_suspend()
651 dev->power.request_pending = true; in rpm_suspend()
652 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
657 __update_runtime_status(dev, RPM_SUSPENDING); in rpm_suspend()
659 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in rpm_suspend()
661 dev_pm_enable_wake_irq_check(dev, true); in rpm_suspend()
662 retval = rpm_callback(callback, dev); in rpm_suspend()
666 dev_pm_enable_wake_irq_complete(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, true); 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 > 0) { in rpm_resume()
766 if (dev->power.runtime_status == RPM_ACTIVE && in rpm_resume()
767 dev->power.last_status == RPM_ACTIVE) in rpm_resume()
781 dev->power.request = RPM_REQ_NONE; in rpm_resume()
782 if (!dev->power.timer_autosuspends) in rpm_resume()
783 pm_runtime_deactivate_timer(dev); in rpm_resume()
785 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
790 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
791 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
795 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
796 dev->power.deferred_resume = true; in rpm_resume()
805 if (dev->power.irq_safe) { in rpm_resume()
806 spin_unlock(&dev->power.lock); in rpm_resume()
810 spin_lock(&dev->power.lock); in rpm_resume()
816 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
818 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
819 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
822 spin_unlock_irq(&dev->power.lock); in rpm_resume()
826 spin_lock_irq(&dev->power.lock); in rpm_resume()
828 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
837 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
838 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
839 if (dev->parent->power.disable_depth > 0 in rpm_resume()
840 || dev->parent->power.ignore_children in rpm_resume()
841 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
842 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
843 spin_unlock(&dev->parent->power.lock); in rpm_resume()
847 spin_unlock(&dev->parent->power.lock); in rpm_resume()
852 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
853 if (!dev->power.request_pending) { in rpm_resume()
854 dev->power.request_pending = true; in rpm_resume()
855 queue_work(pm_wq, &dev->power.work); in rpm_resume()
861 if (!parent && dev->parent) { in rpm_resume()
867 parent = dev->parent; in rpm_resume()
868 if (dev->power.irq_safe) in rpm_resume()
870 spin_unlock(&dev->power.lock); in rpm_resume()
887 spin_lock(&dev->power.lock); in rpm_resume()
894 if (dev->power.no_callbacks) in rpm_resume()
897 __update_runtime_status(dev, RPM_RESUMING); in rpm_resume()
899 callback = RPM_GET_CALLBACK(dev, runtime_resume); in rpm_resume()
901 dev_pm_disable_wake_irq_check(dev, false); in rpm_resume()
902 retval = rpm_callback(callback, dev); in rpm_resume()
904 __update_runtime_status(dev, RPM_SUSPENDED); in rpm_resume()
905 pm_runtime_cancel_pending(dev); in rpm_resume()
906 dev_pm_enable_wake_irq_check(dev, false); in rpm_resume()
909 __update_runtime_status(dev, RPM_ACTIVE); in rpm_resume()
910 pm_runtime_mark_last_busy(dev); in rpm_resume()
914 wake_up_all(&dev->power.wait_queue); in rpm_resume()
917 rpm_idle(dev, RPM_ASYNC); in rpm_resume()
920 if (parent && !dev->power.irq_safe) { in rpm_resume()
921 spin_unlock_irq(&dev->power.lock); in rpm_resume()
925 spin_lock_irq(&dev->power.lock); in rpm_resume()
928 trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); in rpm_resume()
942 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work() local
945 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
947 if (!dev->power.request_pending) in pm_runtime_work()
950 req = dev->power.request; in pm_runtime_work()
951 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
952 dev->power.request_pending = false; in pm_runtime_work()
958 rpm_idle(dev, RPM_NOWAIT); in pm_runtime_work()
961 rpm_suspend(dev, RPM_NOWAIT); in pm_runtime_work()
964 rpm_suspend(dev, RPM_NOWAIT | RPM_AUTO); in pm_runtime_work()
967 rpm_resume(dev, RPM_NOWAIT); in pm_runtime_work()
972 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
983 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn() local
987 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
989 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
995 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
996 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
1000 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1010 int pm_schedule_suspend(struct device *dev, unsigned int delay) in pm_schedule_suspend() argument
1016 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1019 retval = rpm_suspend(dev, RPM_ASYNC); in pm_schedule_suspend()
1023 retval = rpm_check_suspend_allowed(dev); in pm_schedule_suspend()
1028 pm_runtime_cancel_pending(dev); in pm_schedule_suspend()
1031 dev->power.timer_expires = expires; in pm_schedule_suspend()
1032 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1033 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1036 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1042 static int rpm_drop_usage_count(struct device *dev) in rpm_drop_usage_count() argument
1046 ret = atomic_sub_return(1, &dev->power.usage_count); in rpm_drop_usage_count()
1056 atomic_inc(&dev->power.usage_count); in rpm_drop_usage_count()
1057 dev_warn(dev, "Runtime PM usage count underflow!\n"); in rpm_drop_usage_count()
1074 int __pm_runtime_idle(struct device *dev, int rpmflags) in __pm_runtime_idle() argument
1080 retval = rpm_drop_usage_count(dev); in __pm_runtime_idle()
1084 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_idle()
1089 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1091 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1092 retval = rpm_idle(dev, rpmflags); in __pm_runtime_idle()
1093 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1112 int __pm_runtime_suspend(struct device *dev, int rpmflags) in __pm_runtime_suspend() argument
1118 retval = rpm_drop_usage_count(dev); in __pm_runtime_suspend()
1122 trace_rpm_usage_rcuidle(dev, rpmflags); in __pm_runtime_suspend()
1127 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1129 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1130 retval = rpm_suspend(dev, rpmflags); in __pm_runtime_suspend()
1131 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1148 int __pm_runtime_resume(struct device *dev, int rpmflags) in __pm_runtime_resume() argument
1153 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1154 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1157 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1159 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1160 retval = rpm_resume(dev, rpmflags); in __pm_runtime_resume()
1161 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1189 int pm_runtime_get_if_active(struct device *dev, bool ign_usage_count) in pm_runtime_get_if_active() argument
1194 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1195 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1197 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1201 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1203 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1205 trace_rpm_usage_rcuidle(dev, 0); in pm_runtime_get_if_active()
1206 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1236 int __pm_runtime_set_status(struct device *dev, unsigned int status) in __pm_runtime_set_status() argument
1238 struct device *parent = dev->parent; in __pm_runtime_set_status()
1246 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_set_status()
1252 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1253 dev->power.disable_depth++; in __pm_runtime_set_status()
1257 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_set_status()
1271 error = rpm_get_suppliers(dev); in __pm_runtime_set_status()
1278 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_set_status()
1280 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1297 dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n", in __pm_runtime_set_status()
1298 dev_name(dev), in __pm_runtime_set_status()
1301 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1314 __update_runtime_status(dev, status); in __pm_runtime_set_status()
1316 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1319 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_set_status()
1327 rpm_put_suppliers(dev); in __pm_runtime_set_status()
1332 pm_runtime_enable(dev); in __pm_runtime_set_status()
1347 static void __pm_runtime_barrier(struct device *dev) in __pm_runtime_barrier() argument
1349 pm_runtime_deactivate_timer(dev); in __pm_runtime_barrier()
1351 if (dev->power.request_pending) { in __pm_runtime_barrier()
1352 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1353 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1355 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1357 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1358 dev->power.request_pending = false; in __pm_runtime_barrier()
1361 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1362 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1363 || dev->power.idle_notification) { in __pm_runtime_barrier()
1368 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1370 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1371 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1372 && !dev->power.idle_notification) in __pm_runtime_barrier()
1374 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1378 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1380 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1398 int pm_runtime_barrier(struct device *dev) in pm_runtime_barrier() argument
1402 pm_runtime_get_noresume(dev); in pm_runtime_barrier()
1403 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1405 if (dev->power.request_pending in pm_runtime_barrier()
1406 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1407 rpm_resume(dev, 0); in pm_runtime_barrier()
1411 __pm_runtime_barrier(dev); in pm_runtime_barrier()
1413 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1414 pm_runtime_put_noidle(dev); in pm_runtime_barrier()
1434 void __pm_runtime_disable(struct device *dev, bool check_resume) in __pm_runtime_disable() argument
1436 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1438 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1439 dev->power.disable_depth++; in __pm_runtime_disable()
1448 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1449 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1454 pm_runtime_get_noresume(dev); in __pm_runtime_disable()
1456 rpm_resume(dev, 0); in __pm_runtime_disable()
1458 pm_runtime_put_noidle(dev); in __pm_runtime_disable()
1462 update_pm_runtime_accounting(dev); in __pm_runtime_disable()
1464 if (!dev->power.disable_depth++) { in __pm_runtime_disable()
1465 __pm_runtime_barrier(dev); in __pm_runtime_disable()
1466 dev->power.last_status = dev->power.runtime_status; in __pm_runtime_disable()
1470 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1478 void pm_runtime_enable(struct device *dev) in pm_runtime_enable() argument
1482 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1484 if (!dev->power.disable_depth) { in pm_runtime_enable()
1485 dev_warn(dev, "Unbalanced %s!\n", __func__); in pm_runtime_enable()
1489 if (--dev->power.disable_depth > 0) in pm_runtime_enable()
1492 dev->power.last_status = RPM_INVALID; in pm_runtime_enable()
1493 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1495 if (dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1496 !dev->power.ignore_children && in pm_runtime_enable()
1497 atomic_read(&dev->power.child_count) > 0) in pm_runtime_enable()
1498 dev_warn(dev, "Enabling runtime PM for inactive device with active children\n"); in pm_runtime_enable()
1501 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1519 int devm_pm_runtime_enable(struct device *dev) in devm_pm_runtime_enable() argument
1521 pm_runtime_enable(dev); in devm_pm_runtime_enable()
1523 return devm_add_action_or_reset(dev, pm_runtime_disable_action, dev); in devm_pm_runtime_enable()
1535 void pm_runtime_forbid(struct device *dev) in pm_runtime_forbid() argument
1537 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1538 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1541 dev->power.runtime_auto = false; in pm_runtime_forbid()
1542 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1543 rpm_resume(dev, 0); in pm_runtime_forbid()
1546 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1556 void pm_runtime_allow(struct device *dev) in pm_runtime_allow() argument
1560 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1561 if (dev->power.runtime_auto) in pm_runtime_allow()
1564 dev->power.runtime_auto = true; in pm_runtime_allow()
1565 ret = rpm_drop_usage_count(dev); in pm_runtime_allow()
1567 rpm_idle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1569 trace_rpm_usage_rcuidle(dev, RPM_AUTO | RPM_ASYNC); in pm_runtime_allow()
1572 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1584 void pm_runtime_no_callbacks(struct device *dev) in pm_runtime_no_callbacks() argument
1586 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1587 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1588 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1589 if (device_is_registered(dev)) in pm_runtime_no_callbacks()
1590 rpm_sysfs_remove(dev); in pm_runtime_no_callbacks()
1605 void pm_runtime_irq_safe(struct device *dev) in pm_runtime_irq_safe() argument
1607 if (dev->parent) in pm_runtime_irq_safe()
1608 pm_runtime_get_sync(dev->parent); in pm_runtime_irq_safe()
1609 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1610 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1611 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1626 static void update_autosuspend(struct device *dev, int old_delay, int old_use) in update_autosuspend() argument
1628 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1631 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1635 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1636 rpm_resume(dev, 0); in update_autosuspend()
1638 trace_rpm_usage_rcuidle(dev, 0); in update_autosuspend()
1647 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1650 rpm_idle(dev, RPM_AUTO); in update_autosuspend()
1663 void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) in pm_runtime_set_autosuspend_delay() argument
1667 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1668 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1669 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1670 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1671 update_autosuspend(dev, old_delay, old_use); in pm_runtime_set_autosuspend_delay()
1672 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1684 void __pm_runtime_use_autosuspend(struct device *dev, bool use) in __pm_runtime_use_autosuspend() argument
1688 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1689 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1690 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1691 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1692 update_autosuspend(dev, old_delay, old_use); in __pm_runtime_use_autosuspend()
1693 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1701 void pm_runtime_init(struct device *dev) in pm_runtime_init() argument
1703 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1704 dev->power.last_status = RPM_INVALID; in pm_runtime_init()
1705 dev->power.idle_notification = false; in pm_runtime_init()
1707 dev->power.disable_depth = 1; in pm_runtime_init()
1708 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1710 dev->power.runtime_error = 0; in pm_runtime_init()
1712 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1713 pm_suspend_ignore_children(dev, false); in pm_runtime_init()
1714 dev->power.runtime_auto = true; in pm_runtime_init()
1716 dev->power.request_pending = false; in pm_runtime_init()
1717 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1718 dev->power.deferred_resume = false; in pm_runtime_init()
1719 dev->power.needs_force_resume = 0; in pm_runtime_init()
1720 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1722 dev->power.timer_expires = 0; in pm_runtime_init()
1723 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1724 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1726 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1733 void pm_runtime_reinit(struct device *dev) in pm_runtime_reinit() argument
1735 if (!pm_runtime_enabled(dev)) { in pm_runtime_reinit()
1736 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1737 pm_runtime_set_suspended(dev); in pm_runtime_reinit()
1738 if (dev->power.irq_safe) { in pm_runtime_reinit()
1739 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1740 dev->power.irq_safe = 0; in pm_runtime_reinit()
1741 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1742 if (dev->parent) in pm_runtime_reinit()
1743 pm_runtime_put(dev->parent); in pm_runtime_reinit()
1752 void pm_runtime_remove(struct device *dev) in pm_runtime_remove() argument
1754 __pm_runtime_disable(dev, false); in pm_runtime_remove()
1755 pm_runtime_reinit(dev); in pm_runtime_remove()
1762 void pm_runtime_get_suppliers(struct device *dev) in pm_runtime_get_suppliers() argument
1769 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_get_suppliers()
1783 void pm_runtime_put_suppliers(struct device *dev) in pm_runtime_put_suppliers() argument
1790 list_for_each_entry_rcu(link, &dev->links.suppliers, c_node, in pm_runtime_put_suppliers()
1800 void pm_runtime_new_link(struct device *dev) in pm_runtime_new_link() argument
1802 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1803 dev->power.links_count++; in pm_runtime_new_link()
1804 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1807 static void pm_runtime_drop_link_count(struct device *dev) in pm_runtime_drop_link_count() argument
1809 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1810 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1811 dev->power.links_count--; in pm_runtime_drop_link_count()
1812 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1833 static bool pm_runtime_need_not_resume(struct device *dev) in pm_runtime_need_not_resume() argument
1835 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1836 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1837 dev->power.ignore_children); in pm_runtime_need_not_resume()
1857 int pm_runtime_force_suspend(struct device *dev) in pm_runtime_force_suspend() argument
1862 pm_runtime_disable(dev); in pm_runtime_force_suspend()
1863 if (pm_runtime_status_suspended(dev)) in pm_runtime_force_suspend()
1866 callback = RPM_GET_CALLBACK(dev, runtime_suspend); in pm_runtime_force_suspend()
1868 dev_pm_enable_wake_irq_check(dev, true); in pm_runtime_force_suspend()
1869 ret = callback ? callback(dev) : 0; in pm_runtime_force_suspend()
1873 dev_pm_enable_wake_irq_complete(dev); in pm_runtime_force_suspend()
1881 if (pm_runtime_need_not_resume(dev)) { in pm_runtime_force_suspend()
1882 pm_runtime_set_suspended(dev); in pm_runtime_force_suspend()
1884 __update_runtime_status(dev, RPM_SUSPENDED); in pm_runtime_force_suspend()
1885 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1891 dev_pm_disable_wake_irq_check(dev, true); in pm_runtime_force_suspend()
1892 pm_runtime_enable(dev); in pm_runtime_force_suspend()
1909 int pm_runtime_force_resume(struct device *dev) in pm_runtime_force_resume() argument
1914 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1921 __update_runtime_status(dev, RPM_ACTIVE); in pm_runtime_force_resume()
1923 callback = RPM_GET_CALLBACK(dev, runtime_resume); in pm_runtime_force_resume()
1925 dev_pm_disable_wake_irq_check(dev, false); in pm_runtime_force_resume()
1926 ret = callback ? callback(dev) : 0; in pm_runtime_force_resume()
1928 pm_runtime_set_suspended(dev); in pm_runtime_force_resume()
1929 dev_pm_enable_wake_irq_check(dev, false); in pm_runtime_force_resume()
1933 pm_runtime_mark_last_busy(dev); in pm_runtime_force_resume()
1935 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()
1936 pm_runtime_enable(dev); in pm_runtime_force_resume()