82 struct loopback {  struct
91 	struct loopback *loopback;  argument
142 	return &dpcm->loopback->setup[dpcm->substream->number][device];  in get_setup()
220 		card = cable->streams[SNDRV_PCM_STREAM_PLAYBACK]->loopback->card;  in loopback_check_format()
242 	snd_ctl_notify(dpcm->loopback->card,  in loopback_active_notify()
347 	mutex_lock(&dpcm->loopback->cable_lock);  in loopback_prepare()
353 	mutex_unlock(&dpcm->loopback->cable_lock);  in loopback_prepare()
589 	mutex_lock(&dpcm->loopback->cable_lock);  in loopback_hw_free()
591 	mutex_unlock(&dpcm->loopback->cable_lock);  in loopback_hw_free()
611 	mutex_lock(&dpcm->loopback->cable_lock);  in rule_format()
614 	mutex_unlock(&dpcm->loopback->cable_lock);  in rule_format()
625 	mutex_lock(&dpcm->loopback->cable_lock);  in rule_rate()
628 	mutex_unlock(&dpcm->loopback->cable_lock);  in rule_rate()
641 	mutex_lock(&dpcm->loopback->cable_lock);  in rule_channels()
644 	mutex_unlock(&dpcm->loopback->cable_lock);  in rule_channels()
652 	struct loopback *loopback = substream->private_data;  in free_cable()  local
656 	cable = loopback->cables[substream->number][dev];  in free_cable()
666 		loopback->cables[substream->number][dev] = NULL;  in free_cable()
674 	struct loopback *loopback = substream->private_data;  in loopback_open()  local
680 	mutex_lock(&loopback->cable_lock);  in loopback_open()
686 	dpcm->loopback = loopback;  in loopback_open()
690 	cable = loopback->cables[substream->number][dev];  in loopback_open()
699 		loopback->cables[substream->number][dev] = cable;  in loopback_open()
743 	mutex_unlock(&loopback->cable_lock);  in loopback_open()
749 	struct loopback *loopback = substream->private_data;  in loopback_close()  local
753 	mutex_lock(&loopback->cable_lock);  in loopback_close()
755 	mutex_unlock(&loopback->cable_lock);  in loopback_close()
771 static int loopback_pcm_new(struct loopback *loopback,  in loopback_pcm_new()  argument
777 	err = snd_pcm_new(loopback->card, "Loopback PCM", device,  in loopback_pcm_new()
784 	pcm->private_data = loopback;  in loopback_pcm_new()
788 	loopback->pcm[device] = pcm;  in loopback_pcm_new()
806 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_shift_get()  local
808 	mutex_lock(&loopback->cable_lock);  in loopback_rate_shift_get()
810 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_get()
812 	mutex_unlock(&loopback->cable_lock);  in loopback_rate_shift_get()
819 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_shift_put()  local
828 	mutex_lock(&loopback->cable_lock);  in loopback_rate_shift_put()
829 	if (val != loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_put()
831 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_shift_put()
835 	mutex_unlock(&loopback->cable_lock);  in loopback_rate_shift_put()
842 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_notify_get()  local
844 	mutex_lock(&loopback->cable_lock);  in loopback_notify_get()
846 		loopback->setup[kcontrol->id.subdevice]  in loopback_notify_get()
848 	mutex_unlock(&loopback->cable_lock);  in loopback_notify_get()
855 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_notify_put()  local
860 	mutex_lock(&loopback->cable_lock);  in loopback_notify_put()
861 	if (val != loopback->setup[kcontrol->id.subdevice]  in loopback_notify_put()
863 		loopback->setup[kcontrol->id.subdevice]  in loopback_notify_put()
867 	mutex_unlock(&loopback->cable_lock);  in loopback_notify_put()
874 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_active_get()  local
879 	mutex_lock(&loopback->cable_lock);  in loopback_active_get()
880 	cable = loopback->cables[kcontrol->id.subdevice][kcontrol->id.device ^ 1];  in loopback_active_get()
886 	mutex_unlock(&loopback->cable_lock);  in loopback_active_get()
905 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_format_get()  local
908 		loopback->setup[kcontrol->id.subdevice]  in loopback_format_get()
927 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_rate_get()  local
929 	mutex_lock(&loopback->cable_lock);  in loopback_rate_get()
931 		loopback->setup[kcontrol->id.subdevice]  in loopback_rate_get()
933 	mutex_unlock(&loopback->cable_lock);  in loopback_rate_get()
951 	struct loopback *loopback = snd_kcontrol_chip(kcontrol);  in loopback_channels_get()  local
953 	mutex_lock(&loopback->cable_lock);  in loopback_channels_get()
955 		loopback->setup[kcontrol->id.subdevice]  in loopback_channels_get()
957 	mutex_unlock(&loopback->cable_lock);  in loopback_channels_get()
1010 static int loopback_mixer_new(struct loopback *loopback, int notify)  in loopback_mixer_new()  argument
1012 	struct snd_card *card = loopback->card;  in loopback_mixer_new()
1020 		pcm = loopback->pcm[dev];  in loopback_mixer_new()
1024 			setup = &loopback->setup[substr][dev];  in loopback_mixer_new()
1033 						    loopback);  in loopback_mixer_new()
1089 				 struct loopback *loopback,  in print_substream_info()  argument
1093 	struct loopback_cable *cable = loopback->cables[sub][num];  in print_substream_info()
1110 	struct loopback *loopback = entry->private_data;  in print_cable_info()  local
1113 	mutex_lock(&loopback->cable_lock);  in print_cable_info()
1117 		print_substream_info(buffer, loopback, sub, num);  in print_cable_info()
1118 	mutex_unlock(&loopback->cable_lock);  in print_cable_info()
1121 static int loopback_proc_new(struct loopback *loopback, int cidx)  in loopback_proc_new()  argument
1126 	return snd_card_ro_proc_new(loopback->card, name, loopback,  in loopback_proc_new()
1133 	struct loopback *loopback;  in loopback_probe()  local
1138 			   sizeof(struct loopback), &card);  in loopback_probe()
1141 	loopback = card->private_data;  in loopback_probe()
1148 	loopback->card = card;  in loopback_probe()
1149 	mutex_init(&loopback->cable_lock);  in loopback_probe()
1151 	err = loopback_pcm_new(loopback, 0, pcm_substreams[dev]);  in loopback_probe()
1154 	err = loopback_pcm_new(loopback, 1, pcm_substreams[dev]);  in loopback_probe()
1157 	err = loopback_mixer_new(loopback, pcm_notify[dev] ? 1 : 0);  in loopback_probe()
1160 	loopback_proc_new(loopback, 0);  in loopback_probe()
1161 	loopback_proc_new(loopback, 1);  in loopback_probe()