132 struct loopback {  struct
142 	struct loopback *loopback;  argument
199 	return &dpcm->loopback->setup[dpcm->substream->number][device];  in get_setup()
374 		card = dpcm_play->loopback->card;  in loopback_check_format()
407 	snd_ctl_notify(dpcm->loopback->card,  in loopback_active_notify()
524 	guard(mutex)(&dpcm->loopback->cable_lock);  in loopback_prepare()
970 	guard(mutex)(&dpcm->loopback->cable_lock);  in loopback_hw_free()
991 	scoped_guard(mutex, &dpcm->loopback->cable_lock) {  in rule_format()
1005 	scoped_guard(mutex, &dpcm->loopback->cable_lock) {  in rule_rate()
1021 	scoped_guard(mutex, &dpcm->loopback->cable_lock) {  in rule_channels()
1037 	scoped_guard(mutex, &dpcm->loopback->cable_lock) {  in rule_period_bytes()
1049 	struct loopback *loopback = substream->private_data;  in free_cable()  local
1053 	cable = loopback->cables[substream->number][dev];  in free_cable()
1066 		loopback->cables[substream->number][dev] = NULL;  in free_cable()
1167 	err = loopback_parse_timer_id(dpcm->loopback->timer_source, &tid);  in loopback_snd_timer_open()
1171 			dpcm->loopback->timer_source, err);  in loopback_snd_timer_open()
1178 	timeri = snd_timer_instance_new(dpcm->loopback->card->id);  in loopback_snd_timer_open()
1242 	struct loopback *loopback = substream->private_data;  in loopback_open()  local
1248 	guard(mutex)(&loopback->cable_lock);  in loopback_open()
1252 	dpcm->loopback = loopback;  in loopback_open()
1255 	cable = loopback->cables[substream->number][dev];  in loopback_open()
1264 		if (loopback->timer_source)  in loopback_open()
1268 		loopback->cables[substream->number][dev] = cable;  in loopback_open()
1339 	struct loopback *loopback = substream->private_data;  in loopback_close()  local
1345 	guard(mutex)(&loopback->cable_lock);  in loopback_close()
1359 static int loopback_pcm_new(struct loopback *loopback,  in loopback_pcm_new()  argument
1365 	err = snd_pcm_new(loopback->card, "Loopback PCM", device,  in loopback_pcm_new()
1373 	pcm->private_data = loopback;  in loopback_pcm_new()
1377 	loopback->pcm[device] = pcm;  in loopback_pcm_new()
1395 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_shift_get()  local
1397 	guard(mutex)(&loopback->cable_lock);  in loopback_rate_shift_get()
1399 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_get()
1407 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_shift_put()  local
1416 	guard(mutex)(&loopback->cable_lock);  in loopback_rate_shift_put()
1417 	if (val != loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_put()
1419 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_put()
1429 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_notify_get()  local
1431 	guard(mutex)(&loopback->cable_lock);  in loopback_notify_get()
1433 		loopback->setup[kcontrol->id.subdevice]  in loopback_notify_get()
1441 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_notify_put()  local
1446 	guard(mutex)(&loopback->cable_lock);  in loopback_notify_put()
1447 	if (val != loopback->setup[kcontrol->id.subdevice]  in loopback_notify_put()
1449 		loopback->setup[kcontrol->id.subdevice]  in loopback_notify_put()
1459 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_active_get()  local
1464 	guard(mutex)(&loopback->cable_lock);  in loopback_active_get()
1465 	cable = loopback->cables[kcontrol->id.subdevice][kcontrol->id.device ^ 1];  in loopback_active_get()
1489 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_format_get()  local
1492 		(__force int)loopback->setup[kcontrol->id.subdevice]  in loopback_format_get()
1511 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_get()  local
1513 	guard(mutex)(&loopback->cable_lock);  in loopback_rate_get()
1515 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_get()
1534 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_channels_get()  local
1536 	guard(mutex)(&loopback->cable_lock);  in loopback_channels_get()
1538 		loopback->setup[kcontrol->id.subdevice]  in loopback_channels_get()
1554 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_access_get()  local
1557 	guard(mutex)(&loopback->cable_lock);  in loopback_access_get()
1558 	access = loopback->setup[kcontrol->id.subdevice][kcontrol->id.device].access;  in loopback_access_get()
1622 static int loopback_mixer_new(struct loopback *loopback, int notify)  in loopback_mixer_new()  argument
1624 	struct snd_card *card = loopback->card;  in loopback_mixer_new()
1632 		pcm = loopback->pcm[dev];  in loopback_mixer_new()
1636 			setup = &loopback->setup[substr][dev];  in loopback_mixer_new()
1646 						    loopback);  in loopback_mixer_new()
1705 				 struct loopback *loopback,  in print_substream_info()  argument
1709 	struct loopback_cable *cable = loopback->cables[sub][num];  in print_substream_info()
1726 	struct loopback *loopback = entry->private_data;  in print_cable_info()  local
1729 	guard(mutex)(&loopback->cable_lock);  in print_cable_info()
1733 		print_substream_info(buffer, loopback, sub, num);  in print_cable_info()
1736 static int loopback_cable_proc_new(struct loopback *loopback, int cidx)  in loopback_cable_proc_new()  argument
1741 	return snd_card_ro_proc_new(loopback->card, name, loopback,  in loopback_cable_proc_new()
1745 static void loopback_set_timer_source(struct loopback *loopback,  in loopback_set_timer_source()  argument
1748 	if (loopback->timer_source) {  in loopback_set_timer_source()
1749 		devm_kfree(loopback->card->dev, loopback->timer_source);  in loopback_set_timer_source()
1750 		loopback->timer_source = NULL;  in loopback_set_timer_source()
1753 		loopback->timer_source = devm_kstrdup(loopback->card->dev,  in loopback_set_timer_source()
1760 	struct loopback *loopback = entry->private_data;  in print_timer_source_info()  local
1762 	guard(mutex)(&loopback->cable_lock);  in print_timer_source_info()
1764 		    loopback->timer_source ? loopback->timer_source : "");  in print_timer_source_info()
1770 	struct loopback *loopback = entry->private_data;  in change_timer_source_info()  local
1773 	guard(mutex)(&loopback->cable_lock);  in change_timer_source_info()
1775 		loopback_set_timer_source(loopback, strim(line));  in change_timer_source_info()
1778 static int loopback_timer_source_proc_new(struct loopback *loopback)  in loopback_timer_source_proc_new()  argument
1780 	return snd_card_rw_proc_new(loopback->card, "timer_source", loopback,  in loopback_timer_source_proc_new()
1788 	struct loopback *loopback;  in loopback_probe()  local
1793 				sizeof(struct loopback), &card);  in loopback_probe()
1796 	loopback = card->private_data;  in loopback_probe()
1803 	loopback->card = card;  in loopback_probe()
1804 	loopback_set_timer_source(loopback, timer_source[dev]);  in loopback_probe()
1806 	mutex_init(&loopback->cable_lock);  in loopback_probe()
1808 	err = loopback_pcm_new(loopback, 0, pcm_substreams[dev]);  in loopback_probe()
1811 	err = loopback_pcm_new(loopback, 1, pcm_substreams[dev]);  in loopback_probe()
1814 	err = loopback_mixer_new(loopback, pcm_notify[dev] ? 1 : 0);  in loopback_probe()
1817 	loopback_cable_proc_new(loopback, 0);  in loopback_probe()
1818 	loopback_cable_proc_new(loopback, 1);  in loopback_probe()
1819 	loopback_timer_source_proc_new(loopback);  in loopback_probe()