91 static int snd_timer_free(struct snd_timer *timer);
96 static void snd_timer_reschedule(struct snd_timer * timer, unsigned long ticks_left);
103 							 struct snd_timer *timer)  in snd_timer_instance_new()  argument
120 	timeri->timer = timer;  in snd_timer_instance_new()
121 	if (timer && !try_module_get(timer->module)) {  in snd_timer_instance_new()
135 	struct snd_timer *timer = NULL;  in snd_timer_find()  local
137 	list_for_each_entry(timer, &snd_timer_list, device_list) {  in snd_timer_find()
138 		if (timer->tmr_class != tid->dev_class)  in snd_timer_find()
140 		if ((timer->tmr_class == SNDRV_TIMER_CLASS_CARD ||  in snd_timer_find()
141 		     timer->tmr_class == SNDRV_TIMER_CLASS_PCM) &&  in snd_timer_find()
142 		    (timer->card == NULL ||  in snd_timer_find()
143 		     timer->card->number != tid->card))  in snd_timer_find()
145 		if (timer->tmr_device != tid->device)  in snd_timer_find()
147 		if (timer->tmr_subdevice != tid->subdevice)  in snd_timer_find()
149 		return timer;  in snd_timer_find()
183 	struct snd_timer *timer;  in snd_timer_check_slave()  local
187 	list_for_each_entry(timer, &snd_timer_list, device_list) {  in snd_timer_check_slave()
188 		list_for_each_entry(master, &timer->open_list_head, open_list) {  in snd_timer_check_slave()
195 				slave->timer = master->timer;  in snd_timer_check_slave()
219 			spin_lock(&master->timer->lock);  in snd_timer_check_master()
221 			slave->timer = master->timer;  in snd_timer_check_master()
225 			spin_unlock(&master->timer->lock);  in snd_timer_check_master()
239 	struct snd_timer *timer;  in snd_timer_open()  local
268 	timer = snd_timer_find(tid);  in snd_timer_open()
270 	if (!timer) {  in snd_timer_open()
274 		timer = snd_timer_find(tid);  in snd_timer_open()
277 	if (!timer) {  in snd_timer_open()
281 	if (!list_empty(&timer->open_list_head)) {  in snd_timer_open()
282 		timeri = list_entry(timer->open_list_head.next,  in snd_timer_open()
289 	timeri = snd_timer_instance_new(owner, timer);  in snd_timer_open()
295 	if (timer->card)  in snd_timer_open()
296 		get_device(&timer->card->card_dev);  in snd_timer_open()
299 	if (list_empty(&timer->open_list_head) && timer->hw.open)  in snd_timer_open()
300 		timer->hw.open(timer);  in snd_timer_open()
301 	list_add_tail(&timeri->open_list, &timer->open_list_head);  in snd_timer_open()
315 	struct snd_timer *timer = NULL;  in snd_timer_close()  local
337 		timer = timeri->timer;  in snd_timer_close()
338 		if (snd_BUG_ON(!timer))  in snd_timer_close()
341 		spin_lock_irq(&timer->lock);  in snd_timer_close()
343 			spin_unlock_irq(&timer->lock);  in snd_timer_close()
345 			spin_lock_irq(&timer->lock);  in snd_timer_close()
347 		spin_unlock_irq(&timer->lock);  in snd_timer_close()
350 		if (list_empty(&timer->open_list_head) &&  in snd_timer_close()
351 		    timer->hw.close)  in snd_timer_close()
352 			timer->hw.close(timer);  in snd_timer_close()
355 		spin_lock(&timer->lock);  in snd_timer_close()
360 			slave->timer = NULL;  in snd_timer_close()
364 		spin_unlock(&timer->lock);  in snd_timer_close()
367 		if (timer->card)  in snd_timer_close()
368 			put_device(&timer->card->card_dev);  in snd_timer_close()
376 	if (timer)  in snd_timer_close()
377 		module_put(timer->module);  in snd_timer_close()
383 	struct snd_timer * timer;  in snd_timer_resolution()  local
387 	if ((timer = timeri->timer) != NULL) {  in snd_timer_resolution()
388 		if (timer->hw.c_resolution)  in snd_timer_resolution()
389 			return timer->hw.c_resolution(timer);  in snd_timer_resolution()
390 		return timer->hw.resolution;  in snd_timer_resolution()
397 	struct snd_timer *timer;  in snd_timer_notify1()  local
417 	timer = ti->timer;  in snd_timer_notify1()
418 	if (timer == NULL)  in snd_timer_notify1()
420 	if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE)  in snd_timer_notify1()
422 	spin_lock_irqsave(&timer->lock, flags);  in snd_timer_notify1()
426 	spin_unlock_irqrestore(&timer->lock, flags);  in snd_timer_notify1()
429 static int snd_timer_start1(struct snd_timer *timer, struct snd_timer_instance *timeri,  in snd_timer_start1()  argument
432 	list_move_tail(&timeri->active_list, &timer->active_list_head);  in snd_timer_start1()
433 	if (timer->running) {  in snd_timer_start1()
434 		if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE)  in snd_timer_start1()
436 		timer->flags |= SNDRV_TIMER_FLG_RESCHED;  in snd_timer_start1()
440 		timer->sticks = sticks;  in snd_timer_start1()
441 		timer->hw.start(timer);  in snd_timer_start1()
443 		timer->running++;  in snd_timer_start1()
459 	if (timeri->master && timeri->timer) {  in snd_timer_start_slave()
460 		spin_lock(&timeri->timer->lock);  in snd_timer_start_slave()
463 		spin_unlock(&timeri->timer->lock);  in snd_timer_start_slave()
474 	struct snd_timer *timer;  in snd_timer_start()  local
486 	timer = timeri->timer;  in snd_timer_start()
487 	if (timer == NULL)  in snd_timer_start()
489 	if (timer->card && timer->card->shutdown)  in snd_timer_start()
491 	spin_lock_irqsave(&timer->lock, flags);  in snd_timer_start()
499 	result = snd_timer_start1(timer, timeri, ticks);  in snd_timer_start()
501 	spin_unlock_irqrestore(&timer->lock, flags);  in snd_timer_start()
509 	struct snd_timer *timer;  in _snd_timer_stop()  local
521 		if (timeri->timer)  in _snd_timer_stop()
522 			spin_lock(&timeri->timer->lock);  in _snd_timer_stop()
526 		if (timeri->timer)  in _snd_timer_stop()
527 			spin_unlock(&timeri->timer->lock);  in _snd_timer_stop()
531 	timer = timeri->timer;  in _snd_timer_stop()
532 	if (!timer)  in _snd_timer_stop()
534 	spin_lock_irqsave(&timer->lock, flags);  in _snd_timer_stop()
537 		spin_unlock_irqrestore(&timer->lock, flags);  in _snd_timer_stop()
542 	if (timer->card && timer->card->shutdown) {  in _snd_timer_stop()
543 		spin_unlock_irqrestore(&timer->lock, flags);  in _snd_timer_stop()
547 	    !(--timer->running)) {  in _snd_timer_stop()
548 		timer->hw.stop(timer);  in _snd_timer_stop()
549 		if (timer->flags & SNDRV_TIMER_FLG_RESCHED) {  in _snd_timer_stop()
550 			timer->flags &= ~SNDRV_TIMER_FLG_RESCHED;  in _snd_timer_stop()
551 			snd_timer_reschedule(timer, 0);  in _snd_timer_stop()
552 			if (timer->flags & SNDRV_TIMER_FLG_CHANGE) {  in _snd_timer_stop()
553 				timer->flags &= ~SNDRV_TIMER_FLG_CHANGE;  in _snd_timer_stop()
554 				timer->hw.start(timer);  in _snd_timer_stop()
559 	spin_unlock_irqrestore(&timer->lock, flags);  in _snd_timer_stop()
573 	struct snd_timer *timer;  in snd_timer_stop()  local
580 	timer = timeri->timer;  in snd_timer_stop()
581 	if (!timer)  in snd_timer_stop()
583 	spin_lock_irqsave(&timer->lock, flags);  in snd_timer_stop()
586 	spin_unlock_irqrestore(&timer->lock, flags);  in snd_timer_stop()
595 	struct snd_timer *timer;  in snd_timer_continue()  local
603 	timer = timeri->timer;  in snd_timer_continue()
604 	if (! timer)  in snd_timer_continue()
606 	if (timer->card && timer->card->shutdown)  in snd_timer_continue()
608 	spin_lock_irqsave(&timer->lock, flags);  in snd_timer_continue()
616 	result = snd_timer_start1(timer, timeri, timer->sticks);  in snd_timer_continue()
618 	spin_unlock_irqrestore(&timer->lock, flags);  in snd_timer_continue()
637 static void snd_timer_reschedule(struct snd_timer * timer, unsigned long ticks_left)  in snd_timer_reschedule()  argument
642 	list_for_each_entry(ti, &timer->active_list_head, active_list) {  in snd_timer_reschedule()
646 			timer->running++;  in snd_timer_reschedule()
654 		timer->flags &= ~SNDRV_TIMER_FLG_RESCHED;  in snd_timer_reschedule()
657 	if (ticks > timer->hw.ticks)  in snd_timer_reschedule()
658 		ticks = timer->hw.ticks;  in snd_timer_reschedule()
660 		timer->flags |= SNDRV_TIMER_FLG_CHANGE;  in snd_timer_reschedule()
661 	timer->sticks = ticks;  in snd_timer_reschedule()
670 	struct snd_timer *timer = (struct snd_timer *) arg;  in snd_timer_tasklet()  local
676 	if (timer->card && timer->card->shutdown)  in snd_timer_tasklet()
679 	spin_lock_irqsave(&timer->lock, flags);  in snd_timer_tasklet()
681 	while (!list_empty(&timer->sack_list_head)) {  in snd_timer_tasklet()
682 		p = timer->sack_list_head.next;		/* get first item */  in snd_timer_tasklet()
693 		spin_unlock(&timer->lock);  in snd_timer_tasklet()
696 		spin_lock(&timer->lock);  in snd_timer_tasklet()
699 	spin_unlock_irqrestore(&timer->lock, flags);  in snd_timer_tasklet()
708 void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)  in snd_timer_interrupt()  argument
716 	if (timer == NULL)  in snd_timer_interrupt()
719 	if (timer->card && timer->card->shutdown)  in snd_timer_interrupt()
722 	spin_lock_irqsave(&timer->lock, flags);  in snd_timer_interrupt()
725 	if (timer->hw.c_resolution)  in snd_timer_interrupt()
726 		resolution = timer->hw.c_resolution(timer);  in snd_timer_interrupt()
728 		resolution = timer->hw.resolution;  in snd_timer_interrupt()
735 	list_for_each_entry_safe(ti, tmp, &timer->active_list_head,  in snd_timer_interrupt()
751 			--timer->running;  in snd_timer_interrupt()
754 		if ((timer->hw.flags & SNDRV_TIMER_HW_TASKLET) ||  in snd_timer_interrupt()
756 			ack_list_head = &timer->ack_list_head;  in snd_timer_interrupt()
758 			ack_list_head = &timer->sack_list_head;  in snd_timer_interrupt()
768 	if (timer->flags & SNDRV_TIMER_FLG_RESCHED)  in snd_timer_interrupt()
769 		snd_timer_reschedule(timer, timer->sticks);  in snd_timer_interrupt()
770 	if (timer->running) {  in snd_timer_interrupt()
771 		if (timer->hw.flags & SNDRV_TIMER_HW_STOP) {  in snd_timer_interrupt()
772 			timer->hw.stop(timer);  in snd_timer_interrupt()
773 			timer->flags |= SNDRV_TIMER_FLG_CHANGE;  in snd_timer_interrupt()
775 		if (!(timer->hw.flags & SNDRV_TIMER_HW_AUTO) ||  in snd_timer_interrupt()
776 		    (timer->flags & SNDRV_TIMER_FLG_CHANGE)) {  in snd_timer_interrupt()
778 			timer->flags &= ~SNDRV_TIMER_FLG_CHANGE;  in snd_timer_interrupt()
779 			timer->hw.start(timer);  in snd_timer_interrupt()
782 		timer->hw.stop(timer);  in snd_timer_interrupt()
786 	while (!list_empty(&timer->ack_list_head)) {  in snd_timer_interrupt()
787 		p = timer->ack_list_head.next;		/* get first item */  in snd_timer_interrupt()
797 		spin_unlock(&timer->lock);  in snd_timer_interrupt()
800 		spin_lock(&timer->lock);  in snd_timer_interrupt()
805 	use_tasklet = !list_empty(&timer->sack_list_head);  in snd_timer_interrupt()
806 	spin_unlock_irqrestore(&timer->lock, flags);  in snd_timer_interrupt()
809 		tasklet_schedule(&timer->task_queue);  in snd_timer_interrupt()
819 	struct snd_timer *timer;  in snd_timer_new()  local
831 	timer = kzalloc(sizeof(*timer), GFP_KERNEL);  in snd_timer_new()
832 	if (!timer)  in snd_timer_new()
834 	timer->tmr_class = tid->dev_class;  in snd_timer_new()
835 	timer->card = card;  in snd_timer_new()
836 	timer->tmr_device = tid->device;  in snd_timer_new()
837 	timer->tmr_subdevice = tid->subdevice;  in snd_timer_new()
839 		strlcpy(timer->id, id, sizeof(timer->id));  in snd_timer_new()
840 	INIT_LIST_HEAD(&timer->device_list);  in snd_timer_new()
841 	INIT_LIST_HEAD(&timer->open_list_head);  in snd_timer_new()
842 	INIT_LIST_HEAD(&timer->active_list_head);  in snd_timer_new()
843 	INIT_LIST_HEAD(&timer->ack_list_head);  in snd_timer_new()
844 	INIT_LIST_HEAD(&timer->sack_list_head);  in snd_timer_new()
845 	spin_lock_init(&timer->lock);  in snd_timer_new()
846 	tasklet_init(&timer->task_queue, snd_timer_tasklet,  in snd_timer_new()
847 		     (unsigned long)timer);  in snd_timer_new()
849 		timer->module = card->module;  in snd_timer_new()
850 		err = snd_device_new(card, SNDRV_DEV_TIMER, timer, &ops);  in snd_timer_new()
852 			snd_timer_free(timer);  in snd_timer_new()
857 		*rtimer = timer;  in snd_timer_new()
861 static int snd_timer_free(struct snd_timer *timer)  in snd_timer_free()  argument
863 	if (!timer)  in snd_timer_free()
867 	if (! list_empty(&timer->open_list_head)) {  in snd_timer_free()
870 		pr_warn("ALSA: timer %p is busy?\n", timer);  in snd_timer_free()
871 		list_for_each_safe(p, n, &timer->open_list_head) {  in snd_timer_free()
874 			ti->timer = NULL;  in snd_timer_free()
877 	list_del(&timer->device_list);  in snd_timer_free()
880 	if (timer->private_free)  in snd_timer_free()
881 		timer->private_free(timer);  in snd_timer_free()
882 	kfree(timer);  in snd_timer_free()
888 	struct snd_timer *timer = device->device_data;  in snd_timer_dev_free()  local
889 	return snd_timer_free(timer);  in snd_timer_dev_free()
894 	struct snd_timer *timer = dev->device_data;  in snd_timer_dev_register()  local
897 	if (snd_BUG_ON(!timer || !timer->hw.start || !timer->hw.stop))  in snd_timer_dev_register()
899 	if (!(timer->hw.flags & SNDRV_TIMER_HW_SLAVE) &&  in snd_timer_dev_register()
900 	    !timer->hw.resolution && timer->hw.c_resolution == NULL)  in snd_timer_dev_register()
905 		if (timer1->tmr_class > timer->tmr_class)  in snd_timer_dev_register()
907 		if (timer1->tmr_class < timer->tmr_class)  in snd_timer_dev_register()
909 		if (timer1->card && timer->card) {  in snd_timer_dev_register()
910 			if (timer1->card->number > timer->card->number)  in snd_timer_dev_register()
912 			if (timer1->card->number < timer->card->number)  in snd_timer_dev_register()
915 		if (timer1->tmr_device > timer->tmr_device)  in snd_timer_dev_register()
917 		if (timer1->tmr_device < timer->tmr_device)  in snd_timer_dev_register()
919 		if (timer1->tmr_subdevice > timer->tmr_subdevice)  in snd_timer_dev_register()
921 		if (timer1->tmr_subdevice < timer->tmr_subdevice)  in snd_timer_dev_register()
927 	list_add_tail(&timer->device_list, &timer1->device_list);  in snd_timer_dev_register()
939 	struct snd_timer *timer = device->device_data;  in snd_timer_dev_disconnect()  local
943 	list_del_init(&timer->device_list);  in snd_timer_dev_disconnect()
945 	list_for_each_entry(ti, &timer->open_list_head, open_list) {  in snd_timer_dev_disconnect()
958 void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstamp)  in snd_timer_notify()  argument
964 	if (timer->card && timer->card->shutdown)  in snd_timer_notify()
966 	if (! (timer->hw.flags & SNDRV_TIMER_HW_SLAVE))  in snd_timer_notify()
971 	spin_lock_irqsave(&timer->lock, flags);  in snd_timer_notify()
975 		if (timer->hw.c_resolution)  in snd_timer_notify()
976 			resolution = timer->hw.c_resolution(timer);  in snd_timer_notify()
978 			resolution = timer->hw.resolution;  in snd_timer_notify()
980 	list_for_each_entry(ti, &timer->active_list_head, active_list) {  in snd_timer_notify()
987 	spin_unlock_irqrestore(&timer->lock, flags);  in snd_timer_notify()
1005 int snd_timer_global_free(struct snd_timer *timer)  in snd_timer_global_free()  argument
1007 	return snd_timer_free(timer);  in snd_timer_global_free()
1010 int snd_timer_global_register(struct snd_timer *timer)  in snd_timer_global_register()  argument
1015 	dev.device_data = timer;  in snd_timer_global_register()
1032 	struct snd_timer *timer = (struct snd_timer *)data;  in snd_timer_s_function()  local
1033 	struct snd_timer_system_private *priv = timer->private_data;  in snd_timer_s_function()
1037 	snd_timer_interrupt(timer, (long)jiff - (long)priv->last_jiffies);  in snd_timer_s_function()
1040 static int snd_timer_s_start(struct snd_timer * timer)  in snd_timer_s_start()  argument
1045 	priv = (struct snd_timer_system_private *) timer->private_data;  in snd_timer_s_start()
1047 	if (priv->correction > timer->sticks - 1) {  in snd_timer_s_start()
1048 		priv->correction -= timer->sticks - 1;  in snd_timer_s_start()
1051 		njiff += timer->sticks - priv->correction;  in snd_timer_s_start()
1059 static int snd_timer_s_stop(struct snd_timer * timer)  in snd_timer_s_stop()  argument
1064 	priv = (struct snd_timer_system_private *) timer->private_data;  in snd_timer_s_stop()
1068 		timer->sticks = priv->last_expires - jiff;  in snd_timer_s_stop()
1070 		timer->sticks = 1;  in snd_timer_s_stop()
1084 static void snd_timer_free_system(struct snd_timer *timer)  in snd_timer_free_system()  argument
1086 	kfree(timer->private_data);  in snd_timer_free_system()
1091 	struct snd_timer *timer;  in snd_timer_register_system()  local
1095 	err = snd_timer_global_new("system", SNDRV_TIMER_GLOBAL_SYSTEM, &timer);  in snd_timer_register_system()
1098 	strcpy(timer->name, "system timer");  in snd_timer_register_system()
1099 	timer->hw = snd_timer_system;  in snd_timer_register_system()
1102 		snd_timer_free(timer);  in snd_timer_register_system()
1105 	setup_timer(&priv->tlist, snd_timer_s_function, (unsigned long) timer);  in snd_timer_register_system()
1106 	timer->private_data = priv;  in snd_timer_register_system()
1107 	timer->private_free = snd_timer_free_system;  in snd_timer_register_system()
1108 	return snd_timer_global_register(timer);  in snd_timer_register_system()
1119 	struct snd_timer *timer;  in snd_timer_proc_read()  local
1123 	list_for_each_entry(timer, &snd_timer_list, device_list) {  in snd_timer_proc_read()
1124 		if (timer->card && timer->card->shutdown)  in snd_timer_proc_read()
1126 		switch (timer->tmr_class) {  in snd_timer_proc_read()
1128 			snd_iprintf(buffer, "G%i: ", timer->tmr_device);  in snd_timer_proc_read()
1132 				    timer->card->number, timer->tmr_device);  in snd_timer_proc_read()
1135 			snd_iprintf(buffer, "P%i-%i-%i: ", timer->card->number,  in snd_timer_proc_read()
1136 				    timer->tmr_device, timer->tmr_subdevice);  in snd_timer_proc_read()
1139 			snd_iprintf(buffer, "?%i-%i-%i-%i: ", timer->tmr_class,  in snd_timer_proc_read()
1140 				    timer->card ? timer->card->number : -1,  in snd_timer_proc_read()
1141 				    timer->tmr_device, timer->tmr_subdevice);  in snd_timer_proc_read()
1143 		snd_iprintf(buffer, "%s :", timer->name);  in snd_timer_proc_read()
1144 		if (timer->hw.resolution)  in snd_timer_proc_read()
1146 				    timer->hw.resolution / 1000,  in snd_timer_proc_read()
1147 				    timer->hw.resolution % 1000,  in snd_timer_proc_read()
1148 				    timer->hw.ticks);  in snd_timer_proc_read()
1149 		if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE)  in snd_timer_proc_read()
1152 		list_for_each_entry(ti, &timer->open_list_head, open_list)  in snd_timer_proc_read()
1372 static void snd_timer_user_copy_id(struct snd_timer_id *id, struct snd_timer *timer)  in snd_timer_user_copy_id()  argument
1374 	id->dev_class = timer->tmr_class;  in snd_timer_user_copy_id()
1376 	id->card = timer->card ? timer->card->number : -1;  in snd_timer_user_copy_id()
1377 	id->device = timer->tmr_device;  in snd_timer_user_copy_id()
1378 	id->subdevice = timer->tmr_subdevice;  in snd_timer_user_copy_id()
1384 	struct snd_timer *timer;  in snd_timer_user_next_device()  local
1394 			timer = list_entry(snd_timer_list.next,  in snd_timer_user_next_device()
1396 			snd_timer_user_copy_id(&id, timer);  in snd_timer_user_next_device()
1403 				timer = list_entry(p, struct snd_timer, device_list);  in snd_timer_user_next_device()
1404 				if (timer->tmr_class > SNDRV_TIMER_CLASS_GLOBAL) {  in snd_timer_user_next_device()
1405 					snd_timer_user_copy_id(&id, timer);  in snd_timer_user_next_device()
1408 				if (timer->tmr_device >= id.device) {  in snd_timer_user_next_device()
1409 					snd_timer_user_copy_id(&id, timer);  in snd_timer_user_next_device()
1436 				timer = list_entry(p, struct snd_timer, device_list);  in snd_timer_user_next_device()
1437 				if (timer->tmr_class > id.dev_class) {  in snd_timer_user_next_device()
1438 					snd_timer_user_copy_id(&id, timer);  in snd_timer_user_next_device()
1441 				if (timer->tmr_class < id.dev_class)  in snd_timer_user_next_device()
1443 				if (timer->card->number > id.card) {  in snd_timer_user_next_device()
1444 					snd_timer_user_copy_id(&id, timer);  in snd_timer_user_next_device()
1447 				if (timer->card->number < id.card)  in snd_timer_user_next_device()
1449 				if (timer->tmr_device > id.device) {  in snd_timer_user_next_device()
1450 					snd_timer_user_copy_id(&id, timer);  in snd_timer_user_next_device()
1453 				if (timer->tmr_device < id.device)  in snd_timer_user_next_device()
1455 				if (timer->tmr_subdevice > id.subdevice) {  in snd_timer_user_next_device()
1456 					snd_timer_user_copy_id(&id, timer);  in snd_timer_user_next_device()
1459 				if (timer->tmr_subdevice < id.subdevice)  in snd_timer_user_next_device()
1461 				snd_timer_user_copy_id(&id, timer);  in snd_timer_user_next_device()
1650 	t = tu->timeri->timer;  in snd_timer_user_info()
1682 	t = tu->timeri->timer;  in snd_timer_user_params()
2028 	struct snd_timer *timer, *n;  in snd_timer_free_all()  local
2030 	list_for_each_entry_safe(timer, n, &snd_timer_list, device_list)  in snd_timer_free_all()
2031 		snd_timer_free(timer);  in snd_timer_free_all()