85 int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int free_flag);
127 void snd_device_initialize(struct device *dev, struct snd_card *card)  in snd_device_initialize()  argument
130 	if (card)  in snd_device_initialize()
131 		dev->parent = &card->card_dev;  in snd_device_initialize()
137 static int snd_card_init(struct snd_card *card, struct device *parent,
140 static int snd_card_do_free(struct snd_card *card);
167 	struct snd_card *card;  in snd_card_new()  local
176 	card = kzalloc(sizeof(*card) + extra_size, GFP_KERNEL);  in snd_card_new()
177 	if (!card)  in snd_card_new()
180 	err = snd_card_init(card, parent, idx, xid, module, extra_size);  in snd_card_new()
184 	*card_ret = card;  in snd_card_new()
223 	struct snd_card *card;  in snd_devm_card_new()  local
227 	card = devres_alloc(__snd_card_release, sizeof(*card) + extra_size,  in snd_devm_card_new()
229 	if (!card)  in snd_devm_card_new()
231 	card->managed = true;  in snd_devm_card_new()
232 	err = snd_card_init(card, parent, idx, xid, module, extra_size);  in snd_devm_card_new()
234 		devres_free(card); /* in managed mode, we need to free manually */  in snd_devm_card_new()
238 	devres_add(parent, card);  in snd_devm_card_new()
239 	*card_ret = card;  in snd_devm_card_new()
257 	struct snd_card *card;  in snd_card_free_on_error()  local
261 	card = devres_find(dev, __snd_card_release, NULL, NULL);  in snd_card_free_on_error()
262 	if (card)  in snd_card_free_on_error()
263 		snd_card_free(card);  in snd_card_free_on_error()
268 static int snd_card_init(struct snd_card *card, struct device *parent,  in snd_card_init()  argument
278 		card->private_data = (char *)card + sizeof(struct snd_card);  in snd_card_init()
280 		strscpy(card->id, xid, sizeof(card->id));  in snd_card_init()
298 		if (!card->managed)  in snd_card_init()
299 			kfree(card); /* manually free here, as no destructor called */  in snd_card_init()
306 	card->dev = parent;  in snd_card_init()
307 	card->number = idx;  in snd_card_init()
310 	card->module = module;  in snd_card_init()
312 	INIT_LIST_HEAD(&card->devices);  in snd_card_init()
313 	init_rwsem(&card->controls_rwsem);  in snd_card_init()
314 	rwlock_init(&card->ctl_files_rwlock);  in snd_card_init()
315 	INIT_LIST_HEAD(&card->controls);  in snd_card_init()
316 	INIT_LIST_HEAD(&card->ctl_files);  in snd_card_init()
318 	xa_init(&card->ctl_numids);  in snd_card_init()
319 	xa_init(&card->ctl_hash);  in snd_card_init()
321 	spin_lock_init(&card->files_lock);  in snd_card_init()
322 	INIT_LIST_HEAD(&card->files_list);  in snd_card_init()
323 	mutex_init(&card->memory_mutex);  in snd_card_init()
325 	init_waitqueue_head(&card->power_sleep);  in snd_card_init()
326 	init_waitqueue_head(&card->power_ref_sleep);  in snd_card_init()
327 	atomic_set(&card->power_ref, 0);  in snd_card_init()
329 	init_waitqueue_head(&card->remove_sleep);  in snd_card_init()
330 	card->sync_irq = -1;  in snd_card_init()
332 	device_initialize(&card->card_dev);  in snd_card_init()
333 	card->card_dev.parent = parent;  in snd_card_init()
334 	card->card_dev.class = sound_class;  in snd_card_init()
335 	card->card_dev.release = release_card_device;  in snd_card_init()
336 	card->card_dev.groups = card->dev_groups;  in snd_card_init()
337 	card->dev_groups[0] = &card_dev_attr_group;  in snd_card_init()
338 	err = kobject_set_name(&card->card_dev.kobj, "card%d", idx);  in snd_card_init()
342 	snprintf(card->irq_descr, sizeof(card->irq_descr), "%s:%s",  in snd_card_init()
343 		 dev_driver_string(card->dev), dev_name(&card->card_dev));  in snd_card_init()
347 	err = snd_ctl_create(card);  in snd_card_init()
352 	err = snd_info_card_create(card);  in snd_card_init()
360 	card->debugfs_root = debugfs_create_dir(name, sound_debugfs_root);  in snd_card_init()
365 	snd_device_free_all(card);  in snd_card_init()
367 	put_device(&card->card_dev);  in snd_card_init()
382 	struct snd_card *card;  in snd_card_ref()  local
385 	card = snd_cards[idx];  in snd_card_ref()
386 	if (card)  in snd_card_ref()
387 		get_device(&card->card_dev);  in snd_card_ref()
389 	return card;  in snd_card_ref()
394 int snd_card_locked(int card)  in snd_card_locked()  argument
399 	locked = test_bit(card, snd_cards_lock);  in snd_card_locked()
492 int snd_card_disconnect(struct snd_card *card)  in snd_card_disconnect()  argument
496 	if (!card)  in snd_card_disconnect()
499 	spin_lock(&card->files_lock);  in snd_card_disconnect()
500 	if (card->shutdown) {  in snd_card_disconnect()
501 		spin_unlock(&card->files_lock);  in snd_card_disconnect()
504 	card->shutdown = 1;  in snd_card_disconnect()
507 	list_for_each_entry(mfile, &card->files_list, list) {  in snd_card_disconnect()
519 	spin_unlock(&card->files_lock);	  in snd_card_disconnect()
526 		snd_mixer_oss_notify_callback(card, SND_MIXER_OSS_NOTIFY_DISCONNECT);  in snd_card_disconnect()
530 	snd_device_disconnect_all(card);  in snd_card_disconnect()
532 	if (card->sync_irq > 0)  in snd_card_disconnect()
533 		synchronize_irq(card->sync_irq);  in snd_card_disconnect()
535 	snd_info_card_disconnect(card);  in snd_card_disconnect()
536 	if (card->registered) {  in snd_card_disconnect()
537 		device_del(&card->card_dev);  in snd_card_disconnect()
538 		card->registered = false;  in snd_card_disconnect()
543 	snd_cards[card->number] = NULL;  in snd_card_disconnect()
544 	clear_bit(card->number, snd_cards_lock);  in snd_card_disconnect()
548 	wake_up(&card->power_sleep);  in snd_card_disconnect()
549 	snd_power_sync_ref(card);  in snd_card_disconnect()
564 void snd_card_disconnect_sync(struct snd_card *card)  in snd_card_disconnect_sync()  argument
568 	err = snd_card_disconnect(card);  in snd_card_disconnect_sync()
570 		dev_err(card->dev,  in snd_card_disconnect_sync()
576 	spin_lock_irq(&card->files_lock);  in snd_card_disconnect_sync()
577 	wait_event_lock_irq(card->remove_sleep,  in snd_card_disconnect_sync()
578 			    list_empty(&card->files_list),  in snd_card_disconnect_sync()
579 			    card->files_lock);  in snd_card_disconnect_sync()
580 	spin_unlock_irq(&card->files_lock);  in snd_card_disconnect_sync()
584 static int snd_card_do_free(struct snd_card *card)  in snd_card_do_free()  argument
586 	card->releasing = true;  in snd_card_do_free()
589 		snd_mixer_oss_notify_callback(card, SND_MIXER_OSS_NOTIFY_FREE);  in snd_card_do_free()
591 	snd_device_free_all(card);  in snd_card_do_free()
592 	if (card->private_free)  in snd_card_do_free()
593 		card->private_free(card);  in snd_card_do_free()
594 	if (snd_info_card_free(card) < 0) {  in snd_card_do_free()
595 		dev_warn(card->dev, "unable to free card info\n");  in snd_card_do_free()
599 	debugfs_remove(card->debugfs_root);  in snd_card_do_free()
600 	card->debugfs_root = NULL;  in snd_card_do_free()
602 	if (card->release_completion)  in snd_card_do_free()
603 		complete(card->release_completion);  in snd_card_do_free()
604 	if (!card->managed)  in snd_card_do_free()
605 		kfree(card);  in snd_card_do_free()
620 int snd_card_free_when_closed(struct snd_card *card)  in snd_card_free_when_closed()  argument
622 	int ret = snd_card_disconnect(card);  in snd_card_free_when_closed()
625 	put_device(&card->card_dev);  in snd_card_free_when_closed()
643 int snd_card_free(struct snd_card *card)  in snd_card_free()  argument
654 	if (card->releasing)  in snd_card_free()
657 	card->release_completion = &released;  in snd_card_free()
658 	ret = snd_card_free_when_closed(card);  in snd_card_free()
682 static bool card_id_ok(struct snd_card *card, const char *id)  in card_id_ok()  argument
688 		if (snd_cards[i] && snd_cards[i] != card &&  in card_id_ok()
696 static void copy_valid_id_string(struct snd_card *card, const char *src,  in copy_valid_id_string()  argument
699 	char *id = card->id;  in copy_valid_id_string()
705 	while (*nid && (size_t)(id - card->id) < sizeof(card->id) - 1) {  in copy_valid_id_string()
716 static void snd_card_set_id_no_lock(struct snd_card *card, const char *src,  in snd_card_set_id_no_lock()  argument
723 	copy_valid_id_string(card, src, nid);  in snd_card_set_id_no_lock()
724 	id = card->id;  in snd_card_set_id_no_lock()
741 		if (card_id_ok(card, id))  in snd_card_set_id_no_lock()
747 		if (len + sfxlen >= sizeof(card->id))  in snd_card_set_id_no_lock()
748 			spos = id + sizeof(card->id) - sfxlen - 1;  in snd_card_set_id_no_lock()
759 	dev_err(card->dev, "unable to set card id (%s)\n", id);  in snd_card_set_id_no_lock()
760 	if (card->proc_root->name)  in snd_card_set_id_no_lock()
761 		strscpy(card->id, card->proc_root->name, sizeof(card->id));  in snd_card_set_id_no_lock()
772 void snd_card_set_id(struct snd_card *card, const char *nid)  in snd_card_set_id()  argument
775 	if (card->id[0] != '\0')  in snd_card_set_id()
778 	snd_card_set_id_no_lock(card, nid, nid);  in snd_card_set_id()
786 	struct snd_card *card = container_of(dev, struct snd_card, card_dev);  in id_show()  local
787 	return sysfs_emit(buf, "%s\n", card->id);  in id_show()
793 	struct snd_card *card = container_of(dev, struct snd_card, card_dev);  in id_store()  local
794 	char buf1[sizeof(card->id)];  in id_store()
795 	size_t copy = count > sizeof(card->id) - 1 ?  in id_store()
796 					sizeof(card->id) - 1 : count;  in id_store()
812 	strcpy(card->id, buf1);  in id_store()
813 	snd_info_card_id_change(card);  in id_store()
824 	struct snd_card *card = container_of(dev, struct snd_card, card_dev);  in number_show()  local
825 	return sysfs_emit(buf, "%i\n", card->number);  in number_show()
847 int snd_card_add_dev_attr(struct snd_card *card,  in snd_card_add_dev_attr()  argument
853 	for (i = 0; i < ARRAY_SIZE(card->dev_groups) - 1; i++) {  in snd_card_add_dev_attr()
854 		if (!card->dev_groups[i]) {  in snd_card_add_dev_attr()
855 			card->dev_groups[i] = group;  in snd_card_add_dev_attr()
860 	dev_err(card->dev, "Too many groups assigned\n");  in snd_card_add_dev_attr()
881 int snd_card_register(struct snd_card *card)  in snd_card_register()  argument
885 	if (snd_BUG_ON(!card))  in snd_card_register()
888 	if (!card->registered) {  in snd_card_register()
889 		err = device_add(&card->card_dev);  in snd_card_register()
892 		card->registered = true;  in snd_card_register()
894 		if (card->managed)  in snd_card_register()
895 			devm_remove_action(card->dev, trigger_card_free, card);  in snd_card_register()
898 	if (card->managed) {  in snd_card_register()
899 		err = devm_add_action(card->dev, trigger_card_free, card);  in snd_card_register()
904 	err = snd_device_register_all(card);  in snd_card_register()
908 	if (snd_cards[card->number]) {  in snd_card_register()
911 		return snd_info_card_register(card); /* register pending info */  in snd_card_register()
913 	if (*card->id) {  in snd_card_register()
915 		char tmpid[sizeof(card->id)];  in snd_card_register()
916 		memcpy(tmpid, card->id, sizeof(card->id));  in snd_card_register()
917 		snd_card_set_id_no_lock(card, tmpid, tmpid);  in snd_card_register()
921 		src = *card->shortname ? card->shortname : card->longname;  in snd_card_register()
922 		snd_card_set_id_no_lock(card, src,  in snd_card_register()
925 	snd_cards[card->number] = card;  in snd_card_register()
927 	err = snd_info_card_register(card);  in snd_card_register()
933 		snd_mixer_oss_notify_callback(card, SND_MIXER_OSS_NOTIFY_REGISTER);  in snd_card_register()
944 	struct snd_card *card;  in snd_card_info_read()  local
948 		card = snd_cards[idx];  in snd_card_info_read()
949 		if (card) {  in snd_card_info_read()
953 					card->id,  in snd_card_info_read()
954 					card->driver,  in snd_card_info_read()
955 					card->shortname);  in snd_card_info_read()
957 					card->longname);  in snd_card_info_read()
969 	struct snd_card *card;  in snd_card_info_read_oss()  local
973 		card = snd_cards[idx];  in snd_card_info_read_oss()
974 		if (card) {  in snd_card_info_read_oss()
976 			snd_iprintf(buffer, "%s\n", card->longname);  in snd_card_info_read_oss()
992 	struct snd_card *card;  in snd_card_module_info_read()  local
996 		card = snd_cards[idx];  in snd_card_module_info_read()
997 		if (card)  in snd_card_module_info_read()
999 				    idx, card->module->name);  in snd_card_module_info_read()
1040 int snd_component_add(struct snd_card *card, const char *component)  in snd_component_add()  argument
1045 	ptr = strstr(card->components, component);  in snd_component_add()
1050 	if (strlen(card->components) + 1 + len + 1 > sizeof(card->components)) {  in snd_component_add()
1054 	if (card->components[0] != '\0')  in snd_component_add()
1055 		strcat(card->components, " ");  in snd_component_add()
1056 	strcat(card->components, component);  in snd_component_add()
1072 int snd_card_file_add(struct snd_card *card, struct file *file)  in snd_card_file_add()  argument
1082 	spin_lock(&card->files_lock);  in snd_card_file_add()
1083 	if (card->shutdown) {  in snd_card_file_add()
1084 		spin_unlock(&card->files_lock);  in snd_card_file_add()
1088 	list_add(&mfile->list, &card->files_list);  in snd_card_file_add()
1089 	get_device(&card->card_dev);  in snd_card_file_add()
1090 	spin_unlock(&card->files_lock);  in snd_card_file_add()
1108 int snd_card_file_remove(struct snd_card *card, struct file *file)  in snd_card_file_remove()  argument
1112 	spin_lock(&card->files_lock);  in snd_card_file_remove()
1113 	list_for_each_entry(mfile, &card->files_list, list) {  in snd_card_file_remove()
1125 	if (list_empty(&card->files_list))  in snd_card_file_remove()
1126 		wake_up_all(&card->remove_sleep);  in snd_card_file_remove()
1127 	spin_unlock(&card->files_lock);  in snd_card_file_remove()
1129 		dev_err(card->dev, "card file remove problem (%p)\n", file);  in snd_card_file_remove()
1133 	put_device(&card->card_dev);  in snd_card_file_remove()
1154 int snd_power_ref_and_wait(struct snd_card *card)  in snd_power_ref_and_wait()  argument
1156 	snd_power_ref(card);  in snd_power_ref_and_wait()
1157 	if (snd_power_get_state(card) == SNDRV_CTL_POWER_D0)  in snd_power_ref_and_wait()
1159 	wait_event_cmd(card->power_sleep,  in snd_power_ref_and_wait()
1160 		       card->shutdown ||  in snd_power_ref_and_wait()
1161 		       snd_power_get_state(card) == SNDRV_CTL_POWER_D0,  in snd_power_ref_and_wait()
1162 		       snd_power_unref(card), snd_power_ref(card));  in snd_power_ref_and_wait()
1163 	return card->shutdown ? -ENODEV : 0;  in snd_power_ref_and_wait()
1175 int snd_power_wait(struct snd_card *card)  in snd_power_wait()  argument
1179 	ret = snd_power_ref_and_wait(card);  in snd_power_wait()
1180 	snd_power_unref(card);  in snd_power_wait()