83 	struct wakeup_source *ws;  in wakeup_source_create()  local
87 	ws = kzalloc(sizeof(*ws), GFP_KERNEL);  in wakeup_source_create()
88 	if (!ws)  in wakeup_source_create()
94 	ws->name = ws_name;  in wakeup_source_create()
99 	ws->id = id;  in wakeup_source_create()
101 	return ws;  in wakeup_source_create()
104 	kfree_const(ws->name);  in wakeup_source_create()
106 	kfree(ws);  in wakeup_source_create()
115 static void wakeup_source_record(struct wakeup_source *ws)  in wakeup_source_record()  argument
121 	if (ws->event_count) {  in wakeup_source_record()
123 			ktime_add(deleted_ws.total_time, ws->total_time);  in wakeup_source_record()
126 				  ws->prevent_sleep_time);  in wakeup_source_record()
128 			ktime_compare(deleted_ws.max_time, ws->max_time) > 0 ?  in wakeup_source_record()
129 				deleted_ws.max_time : ws->max_time;  in wakeup_source_record()
130 		deleted_ws.event_count += ws->event_count;  in wakeup_source_record()
131 		deleted_ws.active_count += ws->active_count;  in wakeup_source_record()
132 		deleted_ws.relax_count += ws->relax_count;  in wakeup_source_record()
133 		deleted_ws.expire_count += ws->expire_count;  in wakeup_source_record()
134 		deleted_ws.wakeup_count += ws->wakeup_count;  in wakeup_source_record()
140 static void wakeup_source_free(struct wakeup_source *ws)  in wakeup_source_free()  argument
142 	ida_free(&wakeup_ida, ws->id);  in wakeup_source_free()
143 	kfree_const(ws->name);  in wakeup_source_free()
144 	kfree(ws);  in wakeup_source_free()
153 void wakeup_source_destroy(struct wakeup_source *ws)  in wakeup_source_destroy()  argument
155 	if (!ws)  in wakeup_source_destroy()
158 	__pm_relax(ws);  in wakeup_source_destroy()
159 	wakeup_source_record(ws);  in wakeup_source_destroy()
160 	wakeup_source_free(ws);  in wakeup_source_destroy()
168 void wakeup_source_add(struct wakeup_source *ws)  in wakeup_source_add()  argument
172 	if (WARN_ON(!ws))  in wakeup_source_add()
175 	spin_lock_init(&ws->lock);  in wakeup_source_add()
176 	timer_setup(&ws->timer, pm_wakeup_timer_fn, 0);  in wakeup_source_add()
177 	ws->active = false;  in wakeup_source_add()
180 	list_add_rcu(&ws->entry, &wakeup_sources);  in wakeup_source_add()
189 void wakeup_source_remove(struct wakeup_source *ws)  in wakeup_source_remove()  argument
193 	if (WARN_ON(!ws))  in wakeup_source_remove()
197 	list_del_rcu(&ws->entry);  in wakeup_source_remove()
201 	del_timer_sync(&ws->timer);  in wakeup_source_remove()
206 	ws->timer.function = NULL;  in wakeup_source_remove()
218 	struct wakeup_source *ws;  in wakeup_source_register()  local
221 	ws = wakeup_source_create(name);  in wakeup_source_register()
222 	if (ws) {  in wakeup_source_register()
224 			ret = wakeup_source_sysfs_add(dev, ws);  in wakeup_source_register()
226 				wakeup_source_free(ws);  in wakeup_source_register()
230 		wakeup_source_add(ws);  in wakeup_source_register()
232 	return ws;  in wakeup_source_register()
240 void wakeup_source_unregister(struct wakeup_source *ws)  in wakeup_source_unregister()  argument
242 	if (ws) {  in wakeup_source_unregister()
243 		wakeup_source_remove(ws);  in wakeup_source_unregister()
244 		wakeup_source_sysfs_remove(ws);  in wakeup_source_unregister()
245 		wakeup_source_destroy(ws);  in wakeup_source_unregister()
257 static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws)  in device_wakeup_attach()  argument
264 	dev->power.wakeup = ws;  in device_wakeup_attach()
279 	struct wakeup_source *ws;  in device_wakeup_enable()  local
288 	ws = wakeup_source_register(dev, dev_name(dev));  in device_wakeup_enable()
289 	if (!ws)  in device_wakeup_enable()
292 	ret = device_wakeup_attach(dev, ws);  in device_wakeup_enable()
294 		wakeup_source_unregister(ws);  in device_wakeup_enable()
314 	struct wakeup_source *ws;  in device_wakeup_attach_irq()  local
316 	ws = dev->power.wakeup;  in device_wakeup_attach_irq()
317 	if (!ws)  in device_wakeup_attach_irq()
320 	if (ws->wakeirq)  in device_wakeup_attach_irq()
323 	ws->wakeirq = wakeirq;  in device_wakeup_attach_irq()
336 	struct wakeup_source *ws;  in device_wakeup_detach_irq()  local
338 	ws = dev->power.wakeup;  in device_wakeup_detach_irq()
339 	if (ws)  in device_wakeup_detach_irq()
340 		ws->wakeirq = NULL;  in device_wakeup_detach_irq()
350 	struct wakeup_source *ws;  in device_wakeup_arm_wake_irqs()  local
354 	list_for_each_entry_rcu(ws, &wakeup_sources, entry)  in device_wakeup_arm_wake_irqs()
355 		dev_pm_arm_wake_irq(ws->wakeirq);  in device_wakeup_arm_wake_irqs()
366 	struct wakeup_source *ws;  in device_wakeup_disarm_wake_irqs()  local
370 	list_for_each_entry_rcu(ws, &wakeup_sources, entry)  in device_wakeup_disarm_wake_irqs()
371 		dev_pm_disarm_wake_irq(ws->wakeirq);  in device_wakeup_disarm_wake_irqs()
383 	struct wakeup_source *ws;  in device_wakeup_detach()  local
386 	ws = dev->power.wakeup;  in device_wakeup_detach()
389 	return ws;  in device_wakeup_detach()
401 	struct wakeup_source *ws;  in device_wakeup_disable()  local
406 	ws = device_wakeup_detach(dev);  in device_wakeup_disable()
407 	wakeup_source_unregister(ws);  in device_wakeup_disable()
487 static bool wakeup_source_not_registered(struct wakeup_source *ws)  in wakeup_source_not_registered()  argument
493 	return ws->timer.function != pm_wakeup_timer_fn;  in wakeup_source_not_registered()
532 static void wakeup_source_activate(struct wakeup_source *ws)  in wakeup_source_activate()  argument
536 	if (WARN_ONCE(wakeup_source_not_registered(ws),  in wakeup_source_activate()
540 	ws->active = true;  in wakeup_source_activate()
541 	ws->active_count++;  in wakeup_source_activate()
542 	ws->last_time = ktime_get();  in wakeup_source_activate()
543 	if (ws->autosleep_enabled)  in wakeup_source_activate()
544 		ws->start_prevent_time = ws->last_time;  in wakeup_source_activate()
549 	trace_wakeup_source_activate(ws->name, cec);  in wakeup_source_activate()
557 static void wakeup_source_report_event(struct wakeup_source *ws, bool hard)  in wakeup_source_report_event()  argument
559 	ws->event_count++;  in wakeup_source_report_event()
562 		ws->wakeup_count++;  in wakeup_source_report_event()
564 	if (!ws->active)  in wakeup_source_report_event()
565 		wakeup_source_activate(ws);  in wakeup_source_report_event()
577 void __pm_stay_awake(struct wakeup_source *ws)  in __pm_stay_awake()  argument
581 	if (!ws)  in __pm_stay_awake()
584 	spin_lock_irqsave(&ws->lock, flags);  in __pm_stay_awake()
586 	wakeup_source_report_event(ws, false);  in __pm_stay_awake()
587 	del_timer(&ws->timer);  in __pm_stay_awake()
588 	ws->timer_expires = 0;  in __pm_stay_awake()
590 	spin_unlock_irqrestore(&ws->lock, flags);  in __pm_stay_awake()
619 static void update_prevent_sleep_time(struct wakeup_source *ws, ktime_t now)  in update_prevent_sleep_time()  argument
621 	ktime_t delta = ktime_sub(now, ws->start_prevent_time);  in update_prevent_sleep_time()
622 	ws->prevent_sleep_time = ktime_add(ws->prevent_sleep_time, delta);  in update_prevent_sleep_time()
625 static inline void update_prevent_sleep_time(struct wakeup_source *ws,  in update_prevent_sleep_time()  argument
637 static void wakeup_source_deactivate(struct wakeup_source *ws)  in wakeup_source_deactivate()  argument
643 	ws->relax_count++;  in wakeup_source_deactivate()
653 	if (ws->relax_count != ws->active_count) {  in wakeup_source_deactivate()
654 		ws->relax_count--;  in wakeup_source_deactivate()
658 	ws->active = false;  in wakeup_source_deactivate()
661 	duration = ktime_sub(now, ws->last_time);  in wakeup_source_deactivate()
662 	ws->total_time = ktime_add(ws->total_time, duration);  in wakeup_source_deactivate()
663 	if (ktime_to_ns(duration) > ktime_to_ns(ws->max_time))  in wakeup_source_deactivate()
664 		ws->max_time = duration;  in wakeup_source_deactivate()
666 	ws->last_time = now;  in wakeup_source_deactivate()
667 	del_timer(&ws->timer);  in wakeup_source_deactivate()
668 	ws->timer_expires = 0;  in wakeup_source_deactivate()
670 	if (ws->autosleep_enabled)  in wakeup_source_deactivate()
671 		update_prevent_sleep_time(ws, now);  in wakeup_source_deactivate()
678 	trace_wakeup_source_deactivate(ws->name, cec);  in wakeup_source_deactivate()
694 void __pm_relax(struct wakeup_source *ws)  in __pm_relax()  argument
698 	if (!ws)  in __pm_relax()
701 	spin_lock_irqsave(&ws->lock, flags);  in __pm_relax()
702 	if (ws->active)  in __pm_relax()
703 		wakeup_source_deactivate(ws);  in __pm_relax()
704 	spin_unlock_irqrestore(&ws->lock, flags);  in __pm_relax()
737 	struct wakeup_source *ws = from_timer(ws, t, timer);  in pm_wakeup_timer_fn()  local
740 	spin_lock_irqsave(&ws->lock, flags);  in pm_wakeup_timer_fn()
742 	if (ws->active && ws->timer_expires  in pm_wakeup_timer_fn()
743 	    && time_after_eq(jiffies, ws->timer_expires)) {  in pm_wakeup_timer_fn()
744 		wakeup_source_deactivate(ws);  in pm_wakeup_timer_fn()
745 		ws->expire_count++;  in pm_wakeup_timer_fn()
748 	spin_unlock_irqrestore(&ws->lock, flags);  in pm_wakeup_timer_fn()
764 void pm_wakeup_ws_event(struct wakeup_source *ws, unsigned int msec, bool hard)  in pm_wakeup_ws_event()  argument
769 	if (!ws)  in pm_wakeup_ws_event()
772 	spin_lock_irqsave(&ws->lock, flags);  in pm_wakeup_ws_event()
774 	wakeup_source_report_event(ws, hard);  in pm_wakeup_ws_event()
777 		wakeup_source_deactivate(ws);  in pm_wakeup_ws_event()
785 	if (!ws->timer_expires || time_after(expires, ws->timer_expires)) {  in pm_wakeup_ws_event()
786 		mod_timer(&ws->timer, expires);  in pm_wakeup_ws_event()
787 		ws->timer_expires = expires;  in pm_wakeup_ws_event()
791 	spin_unlock_irqrestore(&ws->lock, flags);  in pm_wakeup_ws_event()
818 	struct wakeup_source *ws;  in pm_print_active_wakeup_sources()  local
823 	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {  in pm_print_active_wakeup_sources()
824 		if (ws->active) {  in pm_print_active_wakeup_sources()
825 			pm_pr_dbg("active wakeup source: %s\n", ws->name);  in pm_print_active_wakeup_sources()
829 			    ktime_to_ns(ws->last_time) >  in pm_print_active_wakeup_sources()
831 			last_activity_ws = ws;  in pm_print_active_wakeup_sources()
969 	struct wakeup_source *ws;  in pm_wakep_autosleep_enabled()  local
974 	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {  in pm_wakep_autosleep_enabled()
975 		spin_lock_irq(&ws->lock);  in pm_wakep_autosleep_enabled()
976 		if (ws->autosleep_enabled != set) {  in pm_wakep_autosleep_enabled()
977 			ws->autosleep_enabled = set;  in pm_wakep_autosleep_enabled()
978 			if (ws->active) {  in pm_wakep_autosleep_enabled()
980 					ws->start_prevent_time = now;  in pm_wakep_autosleep_enabled()
982 					update_prevent_sleep_time(ws, now);  in pm_wakep_autosleep_enabled()
985 		spin_unlock_irq(&ws->lock);  in pm_wakep_autosleep_enabled()
997 				     struct wakeup_source *ws)  in print_wakeup_source_stats()  argument
1006 	spin_lock_irqsave(&ws->lock, flags);  in print_wakeup_source_stats()
1008 	total_time = ws->total_time;  in print_wakeup_source_stats()
1009 	max_time = ws->max_time;  in print_wakeup_source_stats()
1010 	prevent_sleep_time = ws->prevent_sleep_time;  in print_wakeup_source_stats()
1011 	active_count = ws->active_count;  in print_wakeup_source_stats()
1012 	if (ws->active) {  in print_wakeup_source_stats()
1015 		active_time = ktime_sub(now, ws->last_time);  in print_wakeup_source_stats()
1020 		if (ws->autosleep_enabled)  in print_wakeup_source_stats()
1022 				ktime_sub(now, ws->start_prevent_time));  in print_wakeup_source_stats()
1028 		   ws->name, active_count, ws->event_count,  in print_wakeup_source_stats()
1029 		   ws->wakeup_count, ws->expire_count,  in print_wakeup_source_stats()
1031 		   ktime_to_ms(max_time), ktime_to_ms(ws->last_time),  in print_wakeup_source_stats()
1034 	spin_unlock_irqrestore(&ws->lock, flags);  in print_wakeup_source_stats()
1042 	struct wakeup_source *ws;  in wakeup_sources_stats_seq_start()  local
1053 	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {  in wakeup_sources_stats_seq_start()
1055 			return ws;  in wakeup_sources_stats_seq_start()
1064 	struct wakeup_source *ws = v;  in wakeup_sources_stats_seq_next()  local
1069 	list_for_each_entry_continue_rcu(ws, &wakeup_sources, entry) {  in wakeup_sources_stats_seq_next()
1070 		next_ws = ws;  in wakeup_sources_stats_seq_next()
1091 	struct wakeup_source *ws = v;  in wakeup_sources_stats_seq_show()  local
1093 	print_wakeup_source_stats(m, ws);  in wakeup_sources_stats_seq_show()