129 struct loopback {  struct
139 	struct loopback *loopback;  argument
193 	return &dpcm->loopback->setup[dpcm->substream->number][device];  in get_setup()
350 		card = cable->streams[SNDRV_PCM_STREAM_PLAYBACK]->loopback->card;  in loopback_check_format()
372 	snd_ctl_notify(dpcm->loopback->card,  in loopback_active_notify()
488 	mutex_lock(&dpcm->loopback->cable_lock);  in loopback_prepare()
494 	mutex_unlock(&dpcm->loopback->cable_lock);  in loopback_prepare()
914 	mutex_lock(&dpcm->loopback->cable_lock);  in loopback_hw_free()
916 	mutex_unlock(&dpcm->loopback->cable_lock);  in loopback_hw_free()
936 	mutex_lock(&dpcm->loopback->cable_lock);  in rule_format()
939 	mutex_unlock(&dpcm->loopback->cable_lock);  in rule_format()
950 	mutex_lock(&dpcm->loopback->cable_lock);  in rule_rate()
953 	mutex_unlock(&dpcm->loopback->cable_lock);  in rule_rate()
966 	mutex_lock(&dpcm->loopback->cable_lock);  in rule_channels()
969 	mutex_unlock(&dpcm->loopback->cable_lock);  in rule_channels()
982 	mutex_lock(&dpcm->loopback->cable_lock);  in rule_period_bytes()
985 	mutex_unlock(&dpcm->loopback->cable_lock);  in rule_period_bytes()
994 	struct loopback *loopback = substream->private_data;  in free_cable()  local
998 	cable = loopback->cables[substream->number][dev];  in free_cable()
1012 		loopback->cables[substream->number][dev] = NULL;  in free_cable()
1111 	err = loopback_parse_timer_id(dpcm->loopback->timer_source, &tid);  in loopback_snd_timer_open()
1115 			dpcm->loopback->timer_source, err);  in loopback_snd_timer_open()
1122 	timeri = snd_timer_instance_new(dpcm->loopback->card->id);  in loopback_snd_timer_open()
1186 	struct loopback *loopback = substream->private_data;  in loopback_open()  local
1192 	mutex_lock(&loopback->cable_lock);  in loopback_open()
1198 	dpcm->loopback = loopback;  in loopback_open()
1201 	cable = loopback->cables[substream->number][dev];  in loopback_open()
1210 		if (loopback->timer_source)  in loopback_open()
1214 		loopback->cables[substream->number][dev] = cable;  in loopback_open()
1280 	mutex_unlock(&loopback->cable_lock);  in loopback_open()
1286 	struct loopback *loopback = substream->private_data;  in loopback_close()  local
1292 	mutex_lock(&loopback->cable_lock);  in loopback_close()
1294 	mutex_unlock(&loopback->cable_lock);  in loopback_close()
1307 static int loopback_pcm_new(struct loopback *loopback,  in loopback_pcm_new()  argument
1313 	err = snd_pcm_new(loopback->card, "Loopback PCM", device,  in loopback_pcm_new()
1321 	pcm->private_data = loopback;  in loopback_pcm_new()
1325 	loopback->pcm[device] = pcm;  in loopback_pcm_new()
1343 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_shift_get()  local
1345 	mutex_lock(&loopback->cable_lock);  in loopback_rate_shift_get()
1347 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_get()
1349 	mutex_unlock(&loopback->cable_lock);  in loopback_rate_shift_get()
1356 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_shift_put()  local
1365 	mutex_lock(&loopback->cable_lock);  in loopback_rate_shift_put()
1366 	if (val != loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_put()
1368 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_put()
1372 	mutex_unlock(&loopback->cable_lock);  in loopback_rate_shift_put()
1379 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_notify_get()  local
1381 	mutex_lock(&loopback->cable_lock);  in loopback_notify_get()
1383 		loopback->setup[kcontrol->id.subdevice]  in loopback_notify_get()
1385 	mutex_unlock(&loopback->cable_lock);  in loopback_notify_get()
1392 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_notify_put()  local
1397 	mutex_lock(&loopback->cable_lock);  in loopback_notify_put()
1398 	if (val != loopback->setup[kcontrol->id.subdevice]  in loopback_notify_put()
1400 		loopback->setup[kcontrol->id.subdevice]  in loopback_notify_put()
1404 	mutex_unlock(&loopback->cable_lock);  in loopback_notify_put()
1411 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_active_get()  local
1416 	mutex_lock(&loopback->cable_lock);  in loopback_active_get()
1417 	cable = loopback->cables[kcontrol->id.subdevice][kcontrol->id.device ^ 1];  in loopback_active_get()
1423 	mutex_unlock(&loopback->cable_lock);  in loopback_active_get()
1442 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_format_get()  local
1445 		(__force int)loopback->setup[kcontrol->id.subdevice]  in loopback_format_get()
1464 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_get()  local
1466 	mutex_lock(&loopback->cable_lock);  in loopback_rate_get()
1468 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_get()
1470 	mutex_unlock(&loopback->cable_lock);  in loopback_rate_get()
1488 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_channels_get()  local
1490 	mutex_lock(&loopback->cable_lock);  in loopback_channels_get()
1492 		loopback->setup[kcontrol->id.subdevice]  in loopback_channels_get()
1494 	mutex_unlock(&loopback->cable_lock);  in loopback_channels_get()
1547 static int loopback_mixer_new(struct loopback *loopback, int notify)  in loopback_mixer_new()  argument
1549 	struct snd_card *card = loopback->card;  in loopback_mixer_new()
1557 		pcm = loopback->pcm[dev];  in loopback_mixer_new()
1561 			setup = &loopback->setup[substr][dev];  in loopback_mixer_new()
1570 						    loopback);  in loopback_mixer_new()
1626 				 struct loopback *loopback,  in print_substream_info()  argument
1630 	struct loopback_cable *cable = loopback->cables[sub][num];  in print_substream_info()
1647 	struct loopback *loopback = entry->private_data;  in print_cable_info()  local
1650 	mutex_lock(&loopback->cable_lock);  in print_cable_info()
1654 		print_substream_info(buffer, loopback, sub, num);  in print_cable_info()
1655 	mutex_unlock(&loopback->cable_lock);  in print_cable_info()
1658 static int loopback_cable_proc_new(struct loopback *loopback, int cidx)  in loopback_cable_proc_new()  argument
1663 	return snd_card_ro_proc_new(loopback->card, name, loopback,  in loopback_cable_proc_new()
1667 static void loopback_set_timer_source(struct loopback *loopback,  in loopback_set_timer_source()  argument
1670 	if (loopback->timer_source) {  in loopback_set_timer_source()
1671 		devm_kfree(loopback->card->dev, loopback->timer_source);  in loopback_set_timer_source()
1672 		loopback->timer_source = NULL;  in loopback_set_timer_source()
1675 		loopback->timer_source = devm_kstrdup(loopback->card->dev,  in loopback_set_timer_source()
1682 	struct loopback *loopback = entry->private_data;  in print_timer_source_info()  local
1684 	mutex_lock(&loopback->cable_lock);  in print_timer_source_info()
1686 		    loopback->timer_source ? loopback->timer_source : "");  in print_timer_source_info()
1687 	mutex_unlock(&loopback->cable_lock);  in print_timer_source_info()
1693 	struct loopback *loopback = entry->private_data;  in change_timer_source_info()  local
1696 	mutex_lock(&loopback->cable_lock);  in change_timer_source_info()
1698 		loopback_set_timer_source(loopback, strim(line));  in change_timer_source_info()
1699 	mutex_unlock(&loopback->cable_lock);  in change_timer_source_info()
1702 static int loopback_timer_source_proc_new(struct loopback *loopback)  in loopback_timer_source_proc_new()  argument
1704 	return snd_card_rw_proc_new(loopback->card, "timer_source", loopback,  in loopback_timer_source_proc_new()
1712 	struct loopback *loopback;  in loopback_probe()  local
1717 				sizeof(struct loopback), &card);  in loopback_probe()
1720 	loopback = card->private_data;  in loopback_probe()
1727 	loopback->card = card;  in loopback_probe()
1728 	loopback_set_timer_source(loopback, timer_source[dev]);  in loopback_probe()
1730 	mutex_init(&loopback->cable_lock);  in loopback_probe()
1732 	err = loopback_pcm_new(loopback, 0, pcm_substreams[dev]);  in loopback_probe()
1735 	err = loopback_pcm_new(loopback, 1, pcm_substreams[dev]);  in loopback_probe()
1738 	err = loopback_mixer_new(loopback, pcm_notify[dev] ? 1 : 0);  in loopback_probe()
1741 	loopback_cable_proc_new(loopback, 0);  in loopback_probe()
1742 	loopback_cable_proc_new(loopback, 1);  in loopback_probe()
1743 	loopback_timer_source_proc_new(loopback);  in loopback_probe()