82 	struct wakeup_source *ws;  in wakeup_source_create()  local
86 	ws = kzalloc(sizeof(*ws), GFP_KERNEL);  in wakeup_source_create()
87 	if (!ws)  in wakeup_source_create()
93 	ws->name = ws_name;  in wakeup_source_create()
98 	ws->id = id;  in wakeup_source_create()
100 	return ws;  in wakeup_source_create()
103 	kfree_const(ws->name);  in wakeup_source_create()
105 	kfree(ws);  in wakeup_source_create()
114 static void wakeup_source_record(struct wakeup_source *ws)  in wakeup_source_record()  argument
120 	if (ws->event_count) {  in wakeup_source_record()
122 			ktime_add(deleted_ws.total_time, ws->total_time);  in wakeup_source_record()
125 				  ws->prevent_sleep_time);  in wakeup_source_record()
127 			ktime_compare(deleted_ws.max_time, ws->max_time) > 0 ?  in wakeup_source_record()
128 				deleted_ws.max_time : ws->max_time;  in wakeup_source_record()
129 		deleted_ws.event_count += ws->event_count;  in wakeup_source_record()
130 		deleted_ws.active_count += ws->active_count;  in wakeup_source_record()
131 		deleted_ws.relax_count += ws->relax_count;  in wakeup_source_record()
132 		deleted_ws.expire_count += ws->expire_count;  in wakeup_source_record()
133 		deleted_ws.wakeup_count += ws->wakeup_count;  in wakeup_source_record()
139 static void wakeup_source_free(struct wakeup_source *ws)  in wakeup_source_free()  argument
141 	ida_free(&wakeup_ida, ws->id);  in wakeup_source_free()
142 	kfree_const(ws->name);  in wakeup_source_free()
143 	kfree(ws);  in wakeup_source_free()
152 void wakeup_source_destroy(struct wakeup_source *ws)  in wakeup_source_destroy()  argument
154 	if (!ws)  in wakeup_source_destroy()
157 	__pm_relax(ws);  in wakeup_source_destroy()
158 	wakeup_source_record(ws);  in wakeup_source_destroy()
159 	wakeup_source_free(ws);  in wakeup_source_destroy()
167 void wakeup_source_add(struct wakeup_source *ws)  in wakeup_source_add()  argument
171 	if (WARN_ON(!ws))  in wakeup_source_add()
174 	spin_lock_init(&ws->lock);  in wakeup_source_add()
175 	timer_setup(&ws->timer, pm_wakeup_timer_fn, 0);  in wakeup_source_add()
176 	ws->active = false;  in wakeup_source_add()
179 	list_add_rcu(&ws->entry, &wakeup_sources);  in wakeup_source_add()
188 void wakeup_source_remove(struct wakeup_source *ws)  in wakeup_source_remove()  argument
192 	if (WARN_ON(!ws))  in wakeup_source_remove()
196 	list_del_rcu(&ws->entry);  in wakeup_source_remove()
200 	del_timer_sync(&ws->timer);  in wakeup_source_remove()
205 	ws->timer.function = NULL;  in wakeup_source_remove()
217 	struct wakeup_source *ws;  in wakeup_source_register()  local
220 	ws = wakeup_source_create(name);  in wakeup_source_register()
221 	if (ws) {  in wakeup_source_register()
223 			ret = wakeup_source_sysfs_add(dev, ws);  in wakeup_source_register()
225 				wakeup_source_free(ws);  in wakeup_source_register()
229 		wakeup_source_add(ws);  in wakeup_source_register()
231 	return ws;  in wakeup_source_register()
239 void wakeup_source_unregister(struct wakeup_source *ws)  in wakeup_source_unregister()  argument
241 	if (ws) {  in wakeup_source_unregister()
242 		wakeup_source_remove(ws);  in wakeup_source_unregister()
243 		if (ws->dev)  in wakeup_source_unregister()
244 			wakeup_source_sysfs_remove(ws);  in wakeup_source_unregister()
246 		wakeup_source_destroy(ws);  in wakeup_source_unregister()
296 struct wakeup_source *wakeup_sources_walk_next(struct wakeup_source *ws)  in wakeup_sources_walk_next()  argument
300 	return list_next_or_null_rcu(ws_head, &ws->entry,  in wakeup_sources_walk_next()
312 static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws)  in device_wakeup_attach()  argument
319 	dev->power.wakeup = ws;  in device_wakeup_attach()
334 	struct wakeup_source *ws;  in device_wakeup_enable()  local
343 	ws = wakeup_source_register(dev, dev_name(dev));  in device_wakeup_enable()
344 	if (!ws)  in device_wakeup_enable()
347 	ret = device_wakeup_attach(dev, ws);  in device_wakeup_enable()
349 		wakeup_source_unregister(ws);  in device_wakeup_enable()
369 	struct wakeup_source *ws;  in device_wakeup_attach_irq()  local
371 	ws = dev->power.wakeup;  in device_wakeup_attach_irq()
372 	if (!ws)  in device_wakeup_attach_irq()
375 	if (ws->wakeirq)  in device_wakeup_attach_irq()
378 	ws->wakeirq = wakeirq;  in device_wakeup_attach_irq()
391 	struct wakeup_source *ws;  in device_wakeup_detach_irq()  local
393 	ws = dev->power.wakeup;  in device_wakeup_detach_irq()
394 	if (ws)  in device_wakeup_detach_irq()
395 		ws->wakeirq = NULL;  in device_wakeup_detach_irq()
405 	struct wakeup_source *ws;  in device_wakeup_arm_wake_irqs()  local
409 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry)  in device_wakeup_arm_wake_irqs()
410 		dev_pm_arm_wake_irq(ws->wakeirq);  in device_wakeup_arm_wake_irqs()
421 	struct wakeup_source *ws;  in device_wakeup_disarm_wake_irqs()  local
425 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry)  in device_wakeup_disarm_wake_irqs()
426 		dev_pm_disarm_wake_irq(ws->wakeirq);  in device_wakeup_disarm_wake_irqs()
438 	struct wakeup_source *ws;  in device_wakeup_detach()  local
441 	ws = dev->power.wakeup;  in device_wakeup_detach()
444 	return ws;  in device_wakeup_detach()
456 	struct wakeup_source *ws;  in device_wakeup_disable()  local
461 	ws = device_wakeup_detach(dev);  in device_wakeup_disable()
462 	wakeup_source_unregister(ws);  in device_wakeup_disable()
513 static bool wakeup_source_not_registered(struct wakeup_source *ws)  in wakeup_source_not_registered()  argument
519 	return ws->timer.function != pm_wakeup_timer_fn;  in wakeup_source_not_registered()
558 static void wakeup_source_activate(struct wakeup_source *ws)  in wakeup_source_activate()  argument
562 	if (WARN_ONCE(wakeup_source_not_registered(ws),  in wakeup_source_activate()
566 	ws->active = true;  in wakeup_source_activate()
567 	ws->active_count++;  in wakeup_source_activate()
568 	ws->last_time = ktime_get();  in wakeup_source_activate()
569 	if (ws->autosleep_enabled)  in wakeup_source_activate()
570 		ws->start_prevent_time = ws->last_time;  in wakeup_source_activate()
575 	trace_wakeup_source_activate(ws->name, cec);  in wakeup_source_activate()
583 static void wakeup_source_report_event(struct wakeup_source *ws, bool hard)  in wakeup_source_report_event()  argument
585 	ws->event_count++;  in wakeup_source_report_event()
588 		ws->wakeup_count++;  in wakeup_source_report_event()
590 	if (!ws->active)  in wakeup_source_report_event()
591 		wakeup_source_activate(ws);  in wakeup_source_report_event()
603 void __pm_stay_awake(struct wakeup_source *ws)  in __pm_stay_awake()  argument
607 	if (!ws)  in __pm_stay_awake()
610 	spin_lock_irqsave(&ws->lock, flags);  in __pm_stay_awake()
612 	wakeup_source_report_event(ws, false);  in __pm_stay_awake()
613 	del_timer(&ws->timer);  in __pm_stay_awake()
614 	ws->timer_expires = 0;  in __pm_stay_awake()
616 	spin_unlock_irqrestore(&ws->lock, flags);  in __pm_stay_awake()
645 static void update_prevent_sleep_time(struct wakeup_source *ws, ktime_t now)  in update_prevent_sleep_time()  argument
647 	ktime_t delta = ktime_sub(now, ws->start_prevent_time);  in update_prevent_sleep_time()
648 	ws->prevent_sleep_time = ktime_add(ws->prevent_sleep_time, delta);  in update_prevent_sleep_time()
651 static inline void update_prevent_sleep_time(struct wakeup_source *ws,  in update_prevent_sleep_time()  argument
663 static void wakeup_source_deactivate(struct wakeup_source *ws)  in wakeup_source_deactivate()  argument
669 	ws->relax_count++;  in wakeup_source_deactivate()
679 	if (ws->relax_count != ws->active_count) {  in wakeup_source_deactivate()
680 		ws->relax_count--;  in wakeup_source_deactivate()
684 	ws->active = false;  in wakeup_source_deactivate()
687 	duration = ktime_sub(now, ws->last_time);  in wakeup_source_deactivate()
688 	ws->total_time = ktime_add(ws->total_time, duration);  in wakeup_source_deactivate()
689 	if (ktime_to_ns(duration) > ktime_to_ns(ws->max_time))  in wakeup_source_deactivate()
690 		ws->max_time = duration;  in wakeup_source_deactivate()
692 	ws->last_time = now;  in wakeup_source_deactivate()
693 	del_timer(&ws->timer);  in wakeup_source_deactivate()
694 	ws->timer_expires = 0;  in wakeup_source_deactivate()
696 	if (ws->autosleep_enabled)  in wakeup_source_deactivate()
697 		update_prevent_sleep_time(ws, now);  in wakeup_source_deactivate()
704 	trace_wakeup_source_deactivate(ws->name, cec);  in wakeup_source_deactivate()
720 void __pm_relax(struct wakeup_source *ws)  in __pm_relax()  argument
724 	if (!ws)  in __pm_relax()
727 	spin_lock_irqsave(&ws->lock, flags);  in __pm_relax()
728 	if (ws->active)  in __pm_relax()
729 		wakeup_source_deactivate(ws);  in __pm_relax()
730 	spin_unlock_irqrestore(&ws->lock, flags);  in __pm_relax()
763 	struct wakeup_source *ws = from_timer(ws, t, timer);  in pm_wakeup_timer_fn()  local
766 	spin_lock_irqsave(&ws->lock, flags);  in pm_wakeup_timer_fn()
768 	if (ws->active && ws->timer_expires  in pm_wakeup_timer_fn()
769 	    && time_after_eq(jiffies, ws->timer_expires)) {  in pm_wakeup_timer_fn()
770 		wakeup_source_deactivate(ws);  in pm_wakeup_timer_fn()
771 		ws->expire_count++;  in pm_wakeup_timer_fn()
774 	spin_unlock_irqrestore(&ws->lock, flags);  in pm_wakeup_timer_fn()
790 void pm_wakeup_ws_event(struct wakeup_source *ws, unsigned int msec, bool hard)  in pm_wakeup_ws_event()  argument
795 	if (!ws)  in pm_wakeup_ws_event()
798 	spin_lock_irqsave(&ws->lock, flags);  in pm_wakeup_ws_event()
800 	wakeup_source_report_event(ws, hard);  in pm_wakeup_ws_event()
803 		wakeup_source_deactivate(ws);  in pm_wakeup_ws_event()
811 	if (!ws->timer_expires || time_after(expires, ws->timer_expires)) {  in pm_wakeup_ws_event()
812 		mod_timer(&ws->timer, expires);  in pm_wakeup_ws_event()
813 		ws->timer_expires = expires;  in pm_wakeup_ws_event()
817 	spin_unlock_irqrestore(&ws->lock, flags);  in pm_wakeup_ws_event()
844 	struct wakeup_source *ws;  in pm_print_active_wakeup_sources()  local
849 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry) {  in pm_print_active_wakeup_sources()
850 		if (ws->active) {  in pm_print_active_wakeup_sources()
851 			pm_pr_dbg("active wakeup source: %s\n", ws->name);  in pm_print_active_wakeup_sources()
855 			    ktime_to_ns(ws->last_time) >  in pm_print_active_wakeup_sources()
857 			last_activity_ws = ws;  in pm_print_active_wakeup_sources()
1024 	struct wakeup_source *ws;  in pm_wakep_autosleep_enabled()  local
1029 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry) {  in pm_wakep_autosleep_enabled()
1030 		spin_lock_irq(&ws->lock);  in pm_wakep_autosleep_enabled()
1031 		if (ws->autosleep_enabled != set) {  in pm_wakep_autosleep_enabled()
1032 			ws->autosleep_enabled = set;  in pm_wakep_autosleep_enabled()
1033 			if (ws->active) {  in pm_wakep_autosleep_enabled()
1035 					ws->start_prevent_time = now;  in pm_wakep_autosleep_enabled()
1037 					update_prevent_sleep_time(ws, now);  in pm_wakep_autosleep_enabled()
1040 		spin_unlock_irq(&ws->lock);  in pm_wakep_autosleep_enabled()
1052 				     struct wakeup_source *ws)  in print_wakeup_source_stats()  argument
1061 	spin_lock_irqsave(&ws->lock, flags);  in print_wakeup_source_stats()
1063 	total_time = ws->total_time;  in print_wakeup_source_stats()
1064 	max_time = ws->max_time;  in print_wakeup_source_stats()
1065 	prevent_sleep_time = ws->prevent_sleep_time;  in print_wakeup_source_stats()
1066 	active_count = ws->active_count;  in print_wakeup_source_stats()
1067 	if (ws->active) {  in print_wakeup_source_stats()
1070 		active_time = ktime_sub(now, ws->last_time);  in print_wakeup_source_stats()
1075 		if (ws->autosleep_enabled)  in print_wakeup_source_stats()
1077 				ktime_sub(now, ws->start_prevent_time));  in print_wakeup_source_stats()
1083 		   ws->name, active_count, ws->event_count,  in print_wakeup_source_stats()
1084 		   ws->wakeup_count, ws->expire_count,  in print_wakeup_source_stats()
1086 		   ktime_to_ms(max_time), ktime_to_ms(ws->last_time),  in print_wakeup_source_stats()
1089 	spin_unlock_irqrestore(&ws->lock, flags);  in print_wakeup_source_stats()
1097 	struct wakeup_source *ws;  in wakeup_sources_stats_seq_start()  local
1108 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry) {  in wakeup_sources_stats_seq_start()
1110 			return ws;  in wakeup_sources_stats_seq_start()
1119 	struct wakeup_source *ws = v;  in wakeup_sources_stats_seq_next()  local
1124 	list_for_each_entry_continue_rcu(ws, &wakeup_sources, entry) {  in wakeup_sources_stats_seq_next()
1125 		next_ws = ws;  in wakeup_sources_stats_seq_next()
1149 	struct wakeup_source *ws = v;  in wakeup_sources_stats_seq_show()  local
1151 	print_wakeup_source_stats(m, ws);  in wakeup_sources_stats_seq_show()