83 void wakeup_source_prepare(struct wakeup_source *ws, const char *name)  in wakeup_source_prepare()  argument
85 	if (ws) {  in wakeup_source_prepare()
86 		memset(ws, 0, sizeof(*ws));  in wakeup_source_prepare()
87 		ws->name = name;  in wakeup_source_prepare()
98 	struct wakeup_source *ws;  in wakeup_source_create()  local
100 	ws = kmalloc(sizeof(*ws), GFP_KERNEL);  in wakeup_source_create()
101 	if (!ws)  in wakeup_source_create()
104 	wakeup_source_prepare(ws, name ? kstrdup_const(name, GFP_KERNEL) : NULL);  in wakeup_source_create()
105 	return ws;  in wakeup_source_create()
116 void wakeup_source_drop(struct wakeup_source *ws)  in wakeup_source_drop()  argument
118 	if (!ws)  in wakeup_source_drop()
121 	del_timer_sync(&ws->timer);  in wakeup_source_drop()
122 	__pm_relax(ws);  in wakeup_source_drop()
129 static void wakeup_source_record(struct wakeup_source *ws)  in wakeup_source_record()  argument
135 	if (ws->event_count) {  in wakeup_source_record()
137 			ktime_add(deleted_ws.total_time, ws->total_time);  in wakeup_source_record()
140 				  ws->prevent_sleep_time);  in wakeup_source_record()
142 			ktime_compare(deleted_ws.max_time, ws->max_time) > 0 ?  in wakeup_source_record()
143 				deleted_ws.max_time : ws->max_time;  in wakeup_source_record()
144 		deleted_ws.event_count += ws->event_count;  in wakeup_source_record()
145 		deleted_ws.active_count += ws->active_count;  in wakeup_source_record()
146 		deleted_ws.relax_count += ws->relax_count;  in wakeup_source_record()
147 		deleted_ws.expire_count += ws->expire_count;  in wakeup_source_record()
148 		deleted_ws.wakeup_count += ws->wakeup_count;  in wakeup_source_record()
160 void wakeup_source_destroy(struct wakeup_source *ws)  in wakeup_source_destroy()  argument
162 	if (!ws)  in wakeup_source_destroy()
165 	wakeup_source_drop(ws);  in wakeup_source_destroy()
166 	wakeup_source_record(ws);  in wakeup_source_destroy()
167 	kfree_const(ws->name);  in wakeup_source_destroy()
168 	kfree(ws);  in wakeup_source_destroy()
176 void wakeup_source_add(struct wakeup_source *ws)  in wakeup_source_add()  argument
180 	if (WARN_ON(!ws))  in wakeup_source_add()
183 	spin_lock_init(&ws->lock);  in wakeup_source_add()
184 	timer_setup(&ws->timer, pm_wakeup_timer_fn, 0);  in wakeup_source_add()
185 	ws->active = false;  in wakeup_source_add()
188 	list_add_rcu(&ws->entry, &wakeup_sources);  in wakeup_source_add()
197 void wakeup_source_remove(struct wakeup_source *ws)  in wakeup_source_remove()  argument
201 	if (WARN_ON(!ws))  in wakeup_source_remove()
205 	list_del_rcu(&ws->entry);  in wakeup_source_remove()
217 	struct wakeup_source *ws;  in wakeup_source_register()  local
219 	ws = wakeup_source_create(name);  in wakeup_source_register()
220 	if (ws)  in wakeup_source_register()
221 		wakeup_source_add(ws);  in wakeup_source_register()
223 	return ws;  in wakeup_source_register()
231 void wakeup_source_unregister(struct wakeup_source *ws)  in wakeup_source_unregister()  argument
233 	if (ws) {  in wakeup_source_unregister()
234 		wakeup_source_remove(ws);  in wakeup_source_unregister()
235 		wakeup_source_destroy(ws);  in wakeup_source_unregister()
247 static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws)  in device_wakeup_attach()  argument
254 	dev->power.wakeup = ws;  in device_wakeup_attach()
269 	struct wakeup_source *ws;  in device_wakeup_enable()  local
278 	ws = wakeup_source_register(dev_name(dev));  in device_wakeup_enable()
279 	if (!ws)  in device_wakeup_enable()
282 	ret = device_wakeup_attach(dev, ws);  in device_wakeup_enable()
284 		wakeup_source_unregister(ws);  in device_wakeup_enable()
304 	struct wakeup_source *ws;  in device_wakeup_attach_irq()  local
306 	ws = dev->power.wakeup;  in device_wakeup_attach_irq()
307 	if (!ws)  in device_wakeup_attach_irq()
310 	if (ws->wakeirq)  in device_wakeup_attach_irq()
313 	ws->wakeirq = wakeirq;  in device_wakeup_attach_irq()
326 	struct wakeup_source *ws;  in device_wakeup_detach_irq()  local
328 	ws = dev->power.wakeup;  in device_wakeup_detach_irq()
329 	if (ws)  in device_wakeup_detach_irq()
330 		ws->wakeirq = NULL;  in device_wakeup_detach_irq()
340 	struct wakeup_source *ws;  in device_wakeup_arm_wake_irqs()  local
344 	list_for_each_entry_rcu(ws, &wakeup_sources, entry)  in device_wakeup_arm_wake_irqs()
345 		dev_pm_arm_wake_irq(ws->wakeirq);  in device_wakeup_arm_wake_irqs()
356 	struct wakeup_source *ws;  in device_wakeup_disarm_wake_irqs()  local
360 	list_for_each_entry_rcu(ws, &wakeup_sources, entry)  in device_wakeup_disarm_wake_irqs()
361 		dev_pm_disarm_wake_irq(ws->wakeirq);  in device_wakeup_disarm_wake_irqs()
373 	struct wakeup_source *ws;  in device_wakeup_detach()  local
376 	ws = dev->power.wakeup;  in device_wakeup_detach()
379 	return ws;  in device_wakeup_detach()
391 	struct wakeup_source *ws;  in device_wakeup_disable()  local
396 	ws = device_wakeup_detach(dev);  in device_wakeup_disable()
397 	wakeup_source_unregister(ws);  in device_wakeup_disable()
477 static bool wakeup_source_not_registered(struct wakeup_source *ws)  in wakeup_source_not_registered()  argument
483 	return ws->timer.function != pm_wakeup_timer_fn;  in wakeup_source_not_registered()
522 static void wakeup_source_activate(struct wakeup_source *ws)  in wakeup_source_activate()  argument
526 	if (WARN_ONCE(wakeup_source_not_registered(ws),  in wakeup_source_activate()
530 	ws->active = true;  in wakeup_source_activate()
531 	ws->active_count++;  in wakeup_source_activate()
532 	ws->last_time = ktime_get();  in wakeup_source_activate()
533 	if (ws->autosleep_enabled)  in wakeup_source_activate()
534 		ws->start_prevent_time = ws->last_time;  in wakeup_source_activate()
539 	trace_wakeup_source_activate(ws->name, cec);  in wakeup_source_activate()
547 static void wakeup_source_report_event(struct wakeup_source *ws, bool hard)  in wakeup_source_report_event()  argument
549 	ws->event_count++;  in wakeup_source_report_event()
552 		ws->wakeup_count++;  in wakeup_source_report_event()
554 	if (!ws->active)  in wakeup_source_report_event()
555 		wakeup_source_activate(ws);  in wakeup_source_report_event()
567 void __pm_stay_awake(struct wakeup_source *ws)  in __pm_stay_awake()  argument
571 	if (!ws)  in __pm_stay_awake()
574 	spin_lock_irqsave(&ws->lock, flags);  in __pm_stay_awake()
576 	wakeup_source_report_event(ws, false);  in __pm_stay_awake()
577 	del_timer(&ws->timer);  in __pm_stay_awake()
578 	ws->timer_expires = 0;  in __pm_stay_awake()
580 	spin_unlock_irqrestore(&ws->lock, flags);  in __pm_stay_awake()
609 static void update_prevent_sleep_time(struct wakeup_source *ws, ktime_t now)  in update_prevent_sleep_time()  argument
611 	ktime_t delta = ktime_sub(now, ws->start_prevent_time);  in update_prevent_sleep_time()
612 	ws->prevent_sleep_time = ktime_add(ws->prevent_sleep_time, delta);  in update_prevent_sleep_time()
615 static inline void update_prevent_sleep_time(struct wakeup_source *ws,  in update_prevent_sleep_time()  argument
627 static void wakeup_source_deactivate(struct wakeup_source *ws)  in wakeup_source_deactivate()  argument
633 	ws->relax_count++;  in wakeup_source_deactivate()
643 	if (ws->relax_count != ws->active_count) {  in wakeup_source_deactivate()
644 		ws->relax_count--;  in wakeup_source_deactivate()
648 	ws->active = false;  in wakeup_source_deactivate()
651 	duration = ktime_sub(now, ws->last_time);  in wakeup_source_deactivate()
652 	ws->total_time = ktime_add(ws->total_time, duration);  in wakeup_source_deactivate()
653 	if (ktime_to_ns(duration) > ktime_to_ns(ws->max_time))  in wakeup_source_deactivate()
654 		ws->max_time = duration;  in wakeup_source_deactivate()
656 	ws->last_time = now;  in wakeup_source_deactivate()
657 	del_timer(&ws->timer);  in wakeup_source_deactivate()
658 	ws->timer_expires = 0;  in wakeup_source_deactivate()
660 	if (ws->autosleep_enabled)  in wakeup_source_deactivate()
661 		update_prevent_sleep_time(ws, now);  in wakeup_source_deactivate()
668 	trace_wakeup_source_deactivate(ws->name, cec);  in wakeup_source_deactivate()
684 void __pm_relax(struct wakeup_source *ws)  in __pm_relax()  argument
688 	if (!ws)  in __pm_relax()
691 	spin_lock_irqsave(&ws->lock, flags);  in __pm_relax()
692 	if (ws->active)  in __pm_relax()
693 		wakeup_source_deactivate(ws);  in __pm_relax()
694 	spin_unlock_irqrestore(&ws->lock, flags);  in __pm_relax()
727 	struct wakeup_source *ws = from_timer(ws, t, timer);  in pm_wakeup_timer_fn()  local
730 	spin_lock_irqsave(&ws->lock, flags);  in pm_wakeup_timer_fn()
732 	if (ws->active && ws->timer_expires  in pm_wakeup_timer_fn()
733 	    && time_after_eq(jiffies, ws->timer_expires)) {  in pm_wakeup_timer_fn()
734 		wakeup_source_deactivate(ws);  in pm_wakeup_timer_fn()
735 		ws->expire_count++;  in pm_wakeup_timer_fn()
738 	spin_unlock_irqrestore(&ws->lock, flags);  in pm_wakeup_timer_fn()
754 void pm_wakeup_ws_event(struct wakeup_source *ws, unsigned int msec, bool hard)  in pm_wakeup_ws_event()  argument
759 	if (!ws)  in pm_wakeup_ws_event()
762 	spin_lock_irqsave(&ws->lock, flags);  in pm_wakeup_ws_event()
764 	wakeup_source_report_event(ws, hard);  in pm_wakeup_ws_event()
767 		wakeup_source_deactivate(ws);  in pm_wakeup_ws_event()
775 	if (!ws->timer_expires || time_after(expires, ws->timer_expires)) {  in pm_wakeup_ws_event()
776 		mod_timer(&ws->timer, expires);  in pm_wakeup_ws_event()
777 		ws->timer_expires = expires;  in pm_wakeup_ws_event()
781 	spin_unlock_irqrestore(&ws->lock, flags);  in pm_wakeup_ws_event()
808 	struct wakeup_source *ws;  in pm_print_active_wakeup_sources()  local
813 	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {  in pm_print_active_wakeup_sources()
814 		if (ws->active) {  in pm_print_active_wakeup_sources()
815 			pr_debug("active wakeup source: %s\n", ws->name);  in pm_print_active_wakeup_sources()
819 			    ktime_to_ns(ws->last_time) >  in pm_print_active_wakeup_sources()
821 			last_activity_ws = ws;  in pm_print_active_wakeup_sources()
959 	struct wakeup_source *ws;  in pm_wakep_autosleep_enabled()  local
964 	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {  in pm_wakep_autosleep_enabled()
965 		spin_lock_irq(&ws->lock);  in pm_wakep_autosleep_enabled()
966 		if (ws->autosleep_enabled != set) {  in pm_wakep_autosleep_enabled()
967 			ws->autosleep_enabled = set;  in pm_wakep_autosleep_enabled()
968 			if (ws->active) {  in pm_wakep_autosleep_enabled()
970 					ws->start_prevent_time = now;  in pm_wakep_autosleep_enabled()
972 					update_prevent_sleep_time(ws, now);  in pm_wakep_autosleep_enabled()
975 		spin_unlock_irq(&ws->lock);  in pm_wakep_autosleep_enabled()
989 				     struct wakeup_source *ws)  in print_wakeup_source_stats()  argument
998 	spin_lock_irqsave(&ws->lock, flags);  in print_wakeup_source_stats()
1000 	total_time = ws->total_time;  in print_wakeup_source_stats()
1001 	max_time = ws->max_time;  in print_wakeup_source_stats()
1002 	prevent_sleep_time = ws->prevent_sleep_time;  in print_wakeup_source_stats()
1003 	active_count = ws->active_count;  in print_wakeup_source_stats()
1004 	if (ws->active) {  in print_wakeup_source_stats()
1007 		active_time = ktime_sub(now, ws->last_time);  in print_wakeup_source_stats()
1012 		if (ws->autosleep_enabled)  in print_wakeup_source_stats()
1014 				ktime_sub(now, ws->start_prevent_time));  in print_wakeup_source_stats()
1020 		   ws->name, active_count, ws->event_count,  in print_wakeup_source_stats()
1021 		   ws->wakeup_count, ws->expire_count,  in print_wakeup_source_stats()
1023 		   ktime_to_ms(max_time), ktime_to_ms(ws->last_time),  in print_wakeup_source_stats()
1026 	spin_unlock_irqrestore(&ws->lock, flags);  in print_wakeup_source_stats()
1034 	struct wakeup_source *ws;  in wakeup_sources_stats_seq_start()  local
1045 	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {  in wakeup_sources_stats_seq_start()
1047 			return ws;  in wakeup_sources_stats_seq_start()
1056 	struct wakeup_source *ws = v;  in wakeup_sources_stats_seq_next()  local
1061 	list_for_each_entry_continue_rcu(ws, &wakeup_sources, entry) {  in wakeup_sources_stats_seq_next()
1062 		next_ws = ws;  in wakeup_sources_stats_seq_next()
1083 	struct wakeup_source *ws = v;  in wakeup_sources_stats_seq_show()  local
1085 	print_wakeup_source_stats(m, ws);  in wakeup_sources_stats_seq_show()