82 	struct wakeup_source *ws;  in wakeup_source_create()  local
86 	ws = kzalloc_obj(*ws);  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()
113 static void wakeup_source_record(struct wakeup_source *ws)  in wakeup_source_record()  argument
119 	if (ws->event_count) {  in wakeup_source_record()
121 			ktime_add(deleted_ws.total_time, ws->total_time);  in wakeup_source_record()
124 				  ws->prevent_sleep_time);  in wakeup_source_record()
126 			ktime_compare(deleted_ws.max_time, ws->max_time) > 0 ?  in wakeup_source_record()
127 				deleted_ws.max_time : ws->max_time;  in wakeup_source_record()
128 		deleted_ws.event_count += ws->event_count;  in wakeup_source_record()
129 		deleted_ws.active_count += ws->active_count;  in wakeup_source_record()
130 		deleted_ws.relax_count += ws->relax_count;  in wakeup_source_record()
131 		deleted_ws.expire_count += ws->expire_count;  in wakeup_source_record()
132 		deleted_ws.wakeup_count += ws->wakeup_count;  in wakeup_source_record()
138 static void wakeup_source_free(struct wakeup_source *ws)  in wakeup_source_free()  argument
140 	ida_free(&wakeup_ida, ws->id);  in wakeup_source_free()
141 	kfree_const(ws->name);  in wakeup_source_free()
142 	kfree(ws);  in wakeup_source_free()
151 static void wakeup_source_destroy(struct wakeup_source *ws)  in wakeup_source_destroy()  argument
153 	if (!ws)  in wakeup_source_destroy()
156 	__pm_relax(ws);  in wakeup_source_destroy()
157 	wakeup_source_record(ws);  in wakeup_source_destroy()
158 	wakeup_source_free(ws);  in wakeup_source_destroy()
165 static void wakeup_source_add(struct wakeup_source *ws)  in wakeup_source_add()  argument
169 	if (WARN_ON(!ws))  in wakeup_source_add()
172 	spin_lock_init(&ws->lock);  in wakeup_source_add()
173 	timer_setup(&ws->timer, pm_wakeup_timer_fn, 0);  in wakeup_source_add()
174 	ws->active = false;  in wakeup_source_add()
177 	list_add_rcu(&ws->entry, &wakeup_sources);  in wakeup_source_add()
185 static void wakeup_source_remove(struct wakeup_source *ws)  in wakeup_source_remove()  argument
189 	if (WARN_ON(!ws))  in wakeup_source_remove()
196 	timer_shutdown_sync(&ws->timer);  in wakeup_source_remove()
199 	list_del_rcu(&ws->entry);  in wakeup_source_remove()
212 	struct wakeup_source *ws;  in wakeup_source_register()  local
215 	ws = wakeup_source_create(name);  in wakeup_source_register()
216 	if (ws) {  in wakeup_source_register()
218 			ret = wakeup_source_sysfs_add(dev, ws);  in wakeup_source_register()
220 				wakeup_source_free(ws);  in wakeup_source_register()
224 		wakeup_source_add(ws);  in wakeup_source_register()
226 	return ws;  in wakeup_source_register()
234 void wakeup_source_unregister(struct wakeup_source *ws)  in wakeup_source_unregister()  argument
236 	if (ws) {  in wakeup_source_unregister()
237 		wakeup_source_remove(ws);  in wakeup_source_unregister()
238 		if (ws->dev)  in wakeup_source_unregister()
239 			wakeup_source_sysfs_remove(ws);  in wakeup_source_unregister()
241 		wakeup_source_destroy(ws);  in wakeup_source_unregister()
289 struct wakeup_source *wakeup_sources_walk_next(struct wakeup_source *ws)  in wakeup_sources_walk_next()  argument
293 	return list_next_or_null_rcu(ws_head, &ws->entry,  in wakeup_sources_walk_next()
305 static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws)  in device_wakeup_attach()  argument
312 	dev->power.wakeup = ws;  in device_wakeup_attach()
327 	struct wakeup_source *ws;  in device_wakeup_enable()  local
336 	ws = wakeup_source_register(dev, dev_name(dev));  in device_wakeup_enable()
337 	if (!ws)  in device_wakeup_enable()
340 	ret = device_wakeup_attach(dev, ws);  in device_wakeup_enable()
342 		wakeup_source_unregister(ws);  in device_wakeup_enable()
362 	struct wakeup_source *ws;  in device_wakeup_attach_irq()  local
364 	ws = dev->power.wakeup;  in device_wakeup_attach_irq()
365 	if (!ws)  in device_wakeup_attach_irq()
368 	if (ws->wakeirq)  in device_wakeup_attach_irq()
371 	ws->wakeirq = wakeirq;  in device_wakeup_attach_irq()
384 	struct wakeup_source *ws;  in device_wakeup_detach_irq()  local
386 	ws = dev->power.wakeup;  in device_wakeup_detach_irq()
387 	if (ws)  in device_wakeup_detach_irq()
388 		ws->wakeirq = NULL;  in device_wakeup_detach_irq()
398 	struct wakeup_source *ws;  in device_wakeup_arm_wake_irqs()  local
402 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry)  in device_wakeup_arm_wake_irqs()
403 		dev_pm_arm_wake_irq(ws->wakeirq);  in device_wakeup_arm_wake_irqs()
414 	struct wakeup_source *ws;  in device_wakeup_disarm_wake_irqs()  local
418 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry)  in device_wakeup_disarm_wake_irqs()
419 		dev_pm_disarm_wake_irq(ws->wakeirq);  in device_wakeup_disarm_wake_irqs()
431 	struct wakeup_source *ws;  in device_wakeup_detach()  local
434 	ws = dev->power.wakeup;  in device_wakeup_detach()
437 	return ws;  in device_wakeup_detach()
449 	struct wakeup_source *ws;  in device_wakeup_disable()  local
454 	ws = device_wakeup_detach(dev);  in device_wakeup_disable()
455 	wakeup_source_unregister(ws);  in device_wakeup_disable()
509 static bool wakeup_source_not_usable(struct wakeup_source *ws)  in wakeup_source_not_usable()  argument
515 	return ws->timer.function != pm_wakeup_timer_fn;  in wakeup_source_not_usable()
554 static void wakeup_source_activate(struct wakeup_source *ws)  in wakeup_source_activate()  argument
558 	if (WARN_ONCE(wakeup_source_not_usable(ws), "unusable wakeup source\n"))  in wakeup_source_activate()
561 	ws->active = true;  in wakeup_source_activate()
562 	ws->active_count++;  in wakeup_source_activate()
563 	ws->last_time = ktime_get();  in wakeup_source_activate()
564 	if (ws->autosleep_enabled)  in wakeup_source_activate()
565 		ws->start_prevent_time = ws->last_time;  in wakeup_source_activate()
570 	trace_wakeup_source_activate(ws->name, cec);  in wakeup_source_activate()
578 static void wakeup_source_report_event(struct wakeup_source *ws, bool hard)  in wakeup_source_report_event()  argument
580 	ws->event_count++;  in wakeup_source_report_event()
583 		ws->wakeup_count++;  in wakeup_source_report_event()
585 	if (!ws->active)  in wakeup_source_report_event()
586 		wakeup_source_activate(ws);  in wakeup_source_report_event()
598 void __pm_stay_awake(struct wakeup_source *ws)  in __pm_stay_awake()  argument
602 	if (!ws)  in __pm_stay_awake()
605 	spin_lock_irqsave(&ws->lock, flags);  in __pm_stay_awake()
607 	wakeup_source_report_event(ws, false);  in __pm_stay_awake()
608 	timer_delete(&ws->timer);  in __pm_stay_awake()
609 	ws->timer_expires = 0;  in __pm_stay_awake()
611 	spin_unlock_irqrestore(&ws->lock, flags);  in __pm_stay_awake()
640 static void update_prevent_sleep_time(struct wakeup_source *ws, ktime_t now)  in update_prevent_sleep_time()  argument
642 	ktime_t delta = ktime_sub(now, ws->start_prevent_time);  in update_prevent_sleep_time()
643 	ws->prevent_sleep_time = ktime_add(ws->prevent_sleep_time, delta);  in update_prevent_sleep_time()
646 static inline void update_prevent_sleep_time(struct wakeup_source *ws,  in update_prevent_sleep_time()  argument
658 static void wakeup_source_deactivate(struct wakeup_source *ws)  in wakeup_source_deactivate()  argument
664 	ws->relax_count++;  in wakeup_source_deactivate()
674 	if (ws->relax_count != ws->active_count) {  in wakeup_source_deactivate()
675 		ws->relax_count--;  in wakeup_source_deactivate()
679 	ws->active = false;  in wakeup_source_deactivate()
682 	duration = ktime_sub(now, ws->last_time);  in wakeup_source_deactivate()
683 	ws->total_time = ktime_add(ws->total_time, duration);  in wakeup_source_deactivate()
684 	if (ktime_to_ns(duration) > ktime_to_ns(ws->max_time))  in wakeup_source_deactivate()
685 		ws->max_time = duration;  in wakeup_source_deactivate()
687 	ws->last_time = now;  in wakeup_source_deactivate()
688 	timer_delete(&ws->timer);  in wakeup_source_deactivate()
689 	ws->timer_expires = 0;  in wakeup_source_deactivate()
691 	if (ws->autosleep_enabled)  in wakeup_source_deactivate()
692 		update_prevent_sleep_time(ws, now);  in wakeup_source_deactivate()
699 	trace_wakeup_source_deactivate(ws->name, cec);  in wakeup_source_deactivate()
715 void __pm_relax(struct wakeup_source *ws)  in __pm_relax()  argument
719 	if (!ws)  in __pm_relax()
722 	spin_lock_irqsave(&ws->lock, flags);  in __pm_relax()
723 	if (ws->active)  in __pm_relax()
724 		wakeup_source_deactivate(ws);  in __pm_relax()
725 	spin_unlock_irqrestore(&ws->lock, flags);  in __pm_relax()
758 	struct wakeup_source *ws = timer_container_of(ws, t, timer);  in pm_wakeup_timer_fn()  local
761 	spin_lock_irqsave(&ws->lock, flags);  in pm_wakeup_timer_fn()
763 	if (ws->active && ws->timer_expires  in pm_wakeup_timer_fn()
764 	    && time_after_eq(jiffies, ws->timer_expires)) {  in pm_wakeup_timer_fn()
765 		wakeup_source_deactivate(ws);  in pm_wakeup_timer_fn()
766 		ws->expire_count++;  in pm_wakeup_timer_fn()
769 	spin_unlock_irqrestore(&ws->lock, flags);  in pm_wakeup_timer_fn()
785 void pm_wakeup_ws_event(struct wakeup_source *ws, unsigned int msec, bool hard)  in pm_wakeup_ws_event()  argument
790 	if (!ws)  in pm_wakeup_ws_event()
793 	spin_lock_irqsave(&ws->lock, flags);  in pm_wakeup_ws_event()
795 	wakeup_source_report_event(ws, hard);  in pm_wakeup_ws_event()
798 		wakeup_source_deactivate(ws);  in pm_wakeup_ws_event()
806 	if (!ws->timer_expires || time_after(expires, ws->timer_expires)) {  in pm_wakeup_ws_event()
807 		mod_timer(&ws->timer, expires);  in pm_wakeup_ws_event()
808 		ws->timer_expires = expires;  in pm_wakeup_ws_event()
812 	spin_unlock_irqrestore(&ws->lock, flags);  in pm_wakeup_ws_event()
839 	struct wakeup_source *ws;  in pm_print_active_wakeup_sources()  local
844 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry) {  in pm_print_active_wakeup_sources()
845 		if (ws->active) {  in pm_print_active_wakeup_sources()
846 			pm_pr_dbg("active wakeup source: %s\n", ws->name);  in pm_print_active_wakeup_sources()
850 			    ktime_to_ns(ws->last_time) >  in pm_print_active_wakeup_sources()
852 			last_activity_ws = ws;  in pm_print_active_wakeup_sources()
1019 	struct wakeup_source *ws;  in pm_wakep_autosleep_enabled()  local
1024 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry) {  in pm_wakep_autosleep_enabled()
1025 		spin_lock_irq(&ws->lock);  in pm_wakep_autosleep_enabled()
1026 		if (ws->autosleep_enabled != set) {  in pm_wakep_autosleep_enabled()
1027 			ws->autosleep_enabled = set;  in pm_wakep_autosleep_enabled()
1028 			if (ws->active) {  in pm_wakep_autosleep_enabled()
1030 					ws->start_prevent_time = now;  in pm_wakep_autosleep_enabled()
1032 					update_prevent_sleep_time(ws, now);  in pm_wakep_autosleep_enabled()
1035 		spin_unlock_irq(&ws->lock);  in pm_wakep_autosleep_enabled()
1047 				     struct wakeup_source *ws)  in print_wakeup_source_stats()  argument
1056 	spin_lock_irqsave(&ws->lock, flags);  in print_wakeup_source_stats()
1058 	total_time = ws->total_time;  in print_wakeup_source_stats()
1059 	max_time = ws->max_time;  in print_wakeup_source_stats()
1060 	prevent_sleep_time = ws->prevent_sleep_time;  in print_wakeup_source_stats()
1061 	active_count = ws->active_count;  in print_wakeup_source_stats()
1062 	if (ws->active) {  in print_wakeup_source_stats()
1065 		active_time = ktime_sub(now, ws->last_time);  in print_wakeup_source_stats()
1070 		if (ws->autosleep_enabled)  in print_wakeup_source_stats()
1072 				ktime_sub(now, ws->start_prevent_time));  in print_wakeup_source_stats()
1078 		   ws->name, active_count, ws->event_count,  in print_wakeup_source_stats()
1079 		   ws->wakeup_count, ws->expire_count,  in print_wakeup_source_stats()
1081 		   ktime_to_ms(max_time), ktime_to_ms(ws->last_time),  in print_wakeup_source_stats()
1084 	spin_unlock_irqrestore(&ws->lock, flags);  in print_wakeup_source_stats()
1092 	struct wakeup_source *ws;  in wakeup_sources_stats_seq_start()  local
1103 	list_for_each_entry_rcu_locked(ws, &wakeup_sources, entry) {  in wakeup_sources_stats_seq_start()
1105 			return ws;  in wakeup_sources_stats_seq_start()
1114 	struct wakeup_source *ws = v;  in wakeup_sources_stats_seq_next()  local
1119 	list_for_each_entry_continue_rcu(ws, &wakeup_sources, entry) {  in wakeup_sources_stats_seq_next()
1120 		next_ws = ws;  in wakeup_sources_stats_seq_next()
1144 	struct wakeup_source *ws = v;  in wakeup_sources_stats_seq_show()  local
1146 	print_wakeup_source_stats(m, ws);  in wakeup_sources_stats_seq_show()