45 static struct device *dmaengine_dma_dev(struct dmaengine_pcm *pcm,  in dmaengine_dma_dev()  argument
48 	if (!pcm->chan[substream->stream])  in dmaengine_dma_dev()
51 	return pcm->chan[substream->stream]->device->dev;  in dmaengine_dma_dev()
91 	struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);  in dmaengine_pcm_hw_params()  local
101 	if (!pcm->config)  in dmaengine_pcm_hw_params()
104 		prepare_slave_config = pcm->config->prepare_slave_config;  in dmaengine_pcm_hw_params()
122 	struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);  in dmaengine_pcm_set_runtime_hwparams()  local
123 	struct device *dma_dev = dmaengine_dma_dev(pcm, substream);  in dmaengine_pcm_set_runtime_hwparams()
124 	struct dma_chan *chan = pcm->chan[substream->stream];  in dmaengine_pcm_set_runtime_hwparams()
133 	if (pcm->config && pcm->config->pcm_hardware)  in dmaengine_pcm_set_runtime_hwparams()
135 				pcm->config->pcm_hardware);  in dmaengine_pcm_set_runtime_hwparams()
149 	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)  in dmaengine_pcm_set_runtime_hwparams()
198 	struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);  in dmaengine_pcm_open()  local
199 	struct dma_chan *chan = pcm->chan[substream->stream];  in dmaengine_pcm_open()
213 	struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);  in dmaengine_pcm_compat_request_channel()  local
219 	if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) && pcm->chan[0])  in dmaengine_pcm_compat_request_channel()
220 		return pcm->chan[0];  in dmaengine_pcm_compat_request_channel()
222 	if (pcm->config && pcm->config->compat_request_channel)  in dmaengine_pcm_compat_request_channel()
223 		return pcm->config->compat_request_channel(rtd, substream);  in dmaengine_pcm_compat_request_channel()
225 	if (pcm->config)  in dmaengine_pcm_compat_request_channel()
226 		fn = pcm->config->compat_filter_fn;  in dmaengine_pcm_compat_request_channel()
252 	struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);  in dmaengine_pcm_new()  local
253 	const struct snd_dmaengine_pcm_config *config = pcm->config;  in dmaengine_pcm_new()
272 		substream = rtd->pcm->streams[i].substream;  in dmaengine_pcm_new()
278 		if (!pcm->chan[i] &&  in dmaengine_pcm_new()
279 		    (pcm->flags & SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME))  in dmaengine_pcm_new()
280 			pcm->chan[i] = dma_request_slave_channel(dev,  in dmaengine_pcm_new()
283 		if (!pcm->chan[i] && (pcm->flags & SND_DMAENGINE_PCM_FLAG_COMPAT)) {  in dmaengine_pcm_new()
284 			pcm->chan[i] = dmaengine_pcm_compat_request_channel(rtd,  in dmaengine_pcm_new()
288 		if (!pcm->chan[i]) {  in dmaengine_pcm_new()
296 				dmaengine_dma_dev(pcm, substream),  in dmaengine_pcm_new()
302 		if (!dmaengine_pcm_can_report_residue(dev, pcm->chan[i]))  in dmaengine_pcm_new()
303 			pcm->flags |= SND_DMAENGINE_PCM_FLAG_NO_RESIDUE;  in dmaengine_pcm_new()
313 	struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);  in dmaengine_pcm_pointer()  local
315 	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)  in dmaengine_pcm_pointer()
344 static int dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm,  in dmaengine_pcm_request_chan_of()  argument
351 	if ((pcm->flags & (SND_DMAENGINE_PCM_FLAG_NO_DT |  in dmaengine_pcm_request_chan_of()
370 		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)  in dmaengine_pcm_request_chan_of()
380 			pcm->chan[i] = NULL;  in dmaengine_pcm_request_chan_of()
382 			pcm->chan[i] = chan;  in dmaengine_pcm_request_chan_of()
384 		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)  in dmaengine_pcm_request_chan_of()
388 	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)  in dmaengine_pcm_request_chan_of()
389 		pcm->chan[1] = pcm->chan[0];  in dmaengine_pcm_request_chan_of()
394 static void dmaengine_pcm_release_chan(struct dmaengine_pcm *pcm)  in dmaengine_pcm_release_chan()  argument
400 		if (!pcm->chan[i])  in dmaengine_pcm_release_chan()
402 		dma_release_channel(pcm->chan[i]);  in dmaengine_pcm_release_chan()
403 		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)  in dmaengine_pcm_release_chan()
417 	struct dmaengine_pcm *pcm;  in snd_dmaengine_pcm_register()  local
420 	pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);  in snd_dmaengine_pcm_register()
421 	if (!pcm)  in snd_dmaengine_pcm_register()
424 	pcm->config = config;  in snd_dmaengine_pcm_register()
425 	pcm->flags = flags;  in snd_dmaengine_pcm_register()
427 	ret = dmaengine_pcm_request_chan_of(pcm, dev, config);  in snd_dmaengine_pcm_register()
431 	ret = snd_soc_add_platform(dev, &pcm->platform,  in snd_dmaengine_pcm_register()
439 	dmaengine_pcm_release_chan(pcm);  in snd_dmaengine_pcm_register()
440 	kfree(pcm);  in snd_dmaengine_pcm_register()
455 	struct dmaengine_pcm *pcm;  in snd_dmaengine_pcm_unregister()  local
461 	pcm = soc_platform_to_pcm(platform);  in snd_dmaengine_pcm_unregister()
464 	dmaengine_pcm_release_chan(pcm);  in snd_dmaengine_pcm_unregister()
465 	kfree(pcm);  in snd_dmaengine_pcm_unregister()