28 	struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];  member
42 	if (!pcm->chan[substream->stream])  in dmaengine_dma_dev()
45 	return pcm->chan[substream->stream]->device->dev;  in dmaengine_dma_dev()
86 	struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);  in dmaengine_pcm_hw_params()  local
105 		ret = dmaengine_slave_config(chan, &slave_config);  in dmaengine_pcm_hw_params()
118 	struct dma_chan *chan = pcm->chan[substream->stream];  in dmaengine_pcm_set_runtime_hwparams()  local
146 	ret = dma_get_slave_caps(chan, &dma_caps);  in dmaengine_pcm_set_runtime_hwparams()
193 	struct dma_chan *chan = pcm->chan[substream->stream];  in dmaengine_pcm_open()  local
200 	return snd_dmaengine_pcm_open(substream, chan);  in dmaengine_pcm_open()
213 	if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) && pcm->chan[0])  in dmaengine_pcm_compat_request_channel()
214 		return pcm->chan[0];  in dmaengine_pcm_compat_request_channel()
225 static bool dmaengine_pcm_can_report_residue(struct dma_chan *chan)  in dmaengine_pcm_can_report_residue()  argument
230 	ret = dma_get_slave_caps(chan, &dma_caps);  in dmaengine_pcm_can_report_residue()
268 		if (!pcm->chan[i] &&  in dmaengine_pcm_new()
270 			pcm->chan[i] = dma_request_slave_channel(dev,  in dmaengine_pcm_new()
273 		if (!pcm->chan[i] && (pcm->flags & SND_DMAENGINE_PCM_FLAG_COMPAT)) {  in dmaengine_pcm_new()
274 			pcm->chan[i] = dmaengine_pcm_compat_request_channel(rtd,  in dmaengine_pcm_new()
278 		if (!pcm->chan[i]) {  in dmaengine_pcm_new()
299 		if (!dmaengine_pcm_can_report_residue(pcm->chan[i]))  in dmaengine_pcm_new()
346 	struct dma_chan *chan;  in dmaengine_pcm_request_chan_of()  local
373 		chan = dma_request_slave_channel_reason(dev, name);  in dmaengine_pcm_request_chan_of()
374 		if (IS_ERR(chan)) {  in dmaengine_pcm_request_chan_of()
375 			if (PTR_ERR(chan) == -EPROBE_DEFER)  in dmaengine_pcm_request_chan_of()
377 			pcm->chan[i] = NULL;  in dmaengine_pcm_request_chan_of()
379 			pcm->chan[i] = chan;  in dmaengine_pcm_request_chan_of()
386 		pcm->chan[1] = pcm->chan[0];  in dmaengine_pcm_request_chan_of()
397 		if (!pcm->chan[i])  in dmaengine_pcm_release_chan()
399 		dma_release_channel(pcm->chan[i]);  in dmaengine_pcm_release_chan()