106 	struct loopback_cable *cable;  member
198 static int loopback_check_format(struct loopback_cable *cable, int stream)  in loopback_check_format()  argument
205 	if (cable->valid != CABLE_VALID_BOTH) {  in loopback_check_format()
210 	runtime = cable->streams[SNDRV_PCM_STREAM_PLAYBACK]->  in loopback_check_format()
212 	cruntime = cable->streams[SNDRV_PCM_STREAM_CAPTURE]->  in loopback_check_format()
222 		snd_pcm_stop(cable->streams[SNDRV_PCM_STREAM_CAPTURE]->  in loopback_check_format()
225 		runtime = cable->streams[SNDRV_PCM_STREAM_PLAYBACK]->  in loopback_check_format()
227 		setup = get_setup(cable->streams[SNDRV_PCM_STREAM_PLAYBACK]);  in loopback_check_format()
228 		card = cable->streams[SNDRV_PCM_STREAM_PLAYBACK]->loopback->card;  in loopback_check_format()
259 	struct loopback_cable *cable = dpcm->cable;  in loopback_trigger()  local
264 		err = loopback_check_format(cable, substream->stream);  in loopback_trigger()
270 		spin_lock(&cable->lock);	  in loopback_trigger()
271 		cable->running |= stream;  in loopback_trigger()
272 		cable->pause &= ~stream;  in loopback_trigger()
274 		spin_unlock(&cable->lock);  in loopback_trigger()
279 		spin_lock(&cable->lock);	  in loopback_trigger()
280 		cable->running &= ~stream;  in loopback_trigger()
281 		cable->pause &= ~stream;  in loopback_trigger()
283 		spin_unlock(&cable->lock);  in loopback_trigger()
289 		spin_lock(&cable->lock);	  in loopback_trigger()
290 		cable->pause |= stream;  in loopback_trigger()
292 		spin_unlock(&cable->lock);  in loopback_trigger()
296 		spin_lock(&cable->lock);  in loopback_trigger()
298 		cable->pause &= ~stream;  in loopback_trigger()
300 		spin_unlock(&cable->lock);  in loopback_trigger()
318 	dst_runtime->hw = dpcm->cable->hw;  in params_change_substream()
325 	struct loopback_cable *cable = dpcm->cable;  in params_change()  local
327 	cable->hw.formats = pcm_format_to_bits(runtime->format);  in params_change()
328 	cable->hw.rate_min = runtime->rate;  in params_change()
329 	cable->hw.rate_max = runtime->rate;  in params_change()
330 	cable->hw.channels_min = runtime->channels;  in params_change()
331 	cable->hw.channels_max = runtime->channels;  in params_change()
332 	params_change_substream(cable->streams[SNDRV_PCM_STREAM_PLAYBACK],  in params_change()
334 	params_change_substream(cable->streams[SNDRV_PCM_STREAM_CAPTURE],  in params_change()
342 	struct loopback_cable *cable = dpcm->cable;  in loopback_prepare()  local
367 	if (!(cable->valid & ~(1 << substream->stream)) ||  in loopback_prepare()
371 	cable->valid |= 1 << substream->stream;  in loopback_prepare()
479 static unsigned int loopback_pos_update(struct loopback_cable *cable)  in loopback_pos_update()  argument
482 			cable->streams[SNDRV_PCM_STREAM_PLAYBACK];  in loopback_pos_update()
484 			cable->streams[SNDRV_PCM_STREAM_CAPTURE];  in loopback_pos_update()
488 	running = cable->running ^ cable->pause;  in loopback_pos_update()
537 	spin_lock_irqsave(&dpcm->cable->lock, flags);  in loopback_timer_function()
538 	if (loopback_pos_update(dpcm->cable) & (1 << dpcm->substream->stream)) {  in loopback_timer_function()
542 			spin_unlock_irqrestore(&dpcm->cable->lock, flags);  in loopback_timer_function()
548 	spin_unlock_irqrestore(&dpcm->cable->lock, flags);  in loopback_timer_function()
557 	spin_lock(&dpcm->cable->lock);  in loopback_pointer()
558 	loopback_pos_update(dpcm->cable);  in loopback_pointer()
560 	spin_unlock(&dpcm->cable->lock);  in loopback_pointer()
604 	struct loopback_cable *cable = dpcm->cable;  in loopback_hw_free()  local
607 	cable->valid &= ~(1 << substream->stream);  in loopback_hw_free()
666 	struct loopback_cable *cable;  in loopback_open()  local
681 	cable = loopback->cables[substream->number][dev];  in loopback_open()
682 	if (!cable) {  in loopback_open()
683 		cable = kzalloc(sizeof(*cable), GFP_KERNEL);  in loopback_open()
684 		if (!cable) {  in loopback_open()
689 		spin_lock_init(&cable->lock);  in loopback_open()
690 		cable->hw = loopback_pcm_hardware;  in loopback_open()
691 		loopback->cables[substream->number][dev] = cable;  in loopback_open()
693 	dpcm->cable = cable;  in loopback_open()
694 	cable->streams[substream->stream] = dpcm;  in loopback_open()
725 		runtime->hw = cable->hw;  in loopback_open()
735 	struct loopback_cable *cable;  in loopback_close()  local
740 	cable = loopback->cables[substream->number][dev];  in loopback_close()
741 	if (cable->streams[!substream->stream]) {  in loopback_close()
743 		cable->streams[substream->stream] = NULL;  in loopback_close()
747 		kfree(cable);  in loopback_close()
877 	struct loopback_cable *cable = loopback->cables  in loopback_active_get()  local
881 	if (cable != NULL)  in loopback_active_get()
882 		val = (cable->running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) ?  in loopback_active_get()
1088 	struct loopback_cable *cable = loopback->cables[sub][num];  in print_substream_info()  local
1091 	if (cable == NULL) {  in print_substream_info()
1095 	snd_iprintf(buffer, "  valid: %u\n", cable->valid);  in print_substream_info()
1096 	snd_iprintf(buffer, "  running: %u\n", cable->running);  in print_substream_info()
1097 	snd_iprintf(buffer, "  pause: %u\n", cable->pause);  in print_substream_info()
1098 	print_dpcm_info(buffer, cable->streams[0], "Playback");  in print_substream_info()
1099 	print_dpcm_info(buffer, cable->streams[1], "Capture");  in print_substream_info()