36 static struct device *dmaengine_dma_dev(struct dmaengine_pcm *pcm,  in dmaengine_dma_dev()  argument
39 	if (!pcm->chan[substream->stream])  in dmaengine_dma_dev()
42 	return pcm->chan[substream->stream]->device->dev;  in dmaengine_dma_dev()
84 	struct dmaengine_pcm *pcm = soc_component_to_pcm(component);  in dmaengine_pcm_hw_params()  local
94 	if (!pcm->config)  in dmaengine_pcm_hw_params()
97 		prepare_slave_config = pcm->config->prepare_slave_config;  in dmaengine_pcm_hw_params()
117 	struct dmaengine_pcm *pcm = soc_component_to_pcm(component);  in dmaengine_pcm_set_runtime_hwparams()  local
118 	struct device *dma_dev = dmaengine_dma_dev(pcm, substream);  in dmaengine_pcm_set_runtime_hwparams()
119 	struct dma_chan *chan = pcm->chan[substream->stream];  in dmaengine_pcm_set_runtime_hwparams()
129 	if (pcm->config && pcm->config->pcm_hardware)  in dmaengine_pcm_set_runtime_hwparams()
131 				pcm->config->pcm_hardware);  in dmaengine_pcm_set_runtime_hwparams()
145 	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)  in dmaengine_pcm_set_runtime_hwparams()
207 	struct dmaengine_pcm *pcm = soc_component_to_pcm(component);  in dmaengine_pcm_open()  local
208 	struct dma_chan *chan = pcm->chan[substream->stream];  in dmaengine_pcm_open()
224 	struct dmaengine_pcm *pcm = soc_component_to_pcm(component);  in dmaengine_pcm_compat_request_channel()  local
230 	if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) && pcm->chan[0])  in dmaengine_pcm_compat_request_channel()
231 		return pcm->chan[0];  in dmaengine_pcm_compat_request_channel()
233 	if (pcm->config && pcm->config->compat_request_channel)  in dmaengine_pcm_compat_request_channel()
234 		return pcm->config->compat_request_channel(rtd, substream);  in dmaengine_pcm_compat_request_channel()
236 	if (pcm->config)  in dmaengine_pcm_compat_request_channel()
237 		fn = pcm->config->compat_filter_fn;  in dmaengine_pcm_compat_request_channel()
265 	struct dmaengine_pcm *pcm = soc_component_to_pcm(component);  in dmaengine_pcm_new()  local
266 	const struct snd_dmaengine_pcm_config *config = pcm->config;  in dmaengine_pcm_new()
284 		substream = rtd->pcm->streams[i].substream;  in dmaengine_pcm_new()
290 		if (!pcm->chan[i] &&  in dmaengine_pcm_new()
291 		    (pcm->flags & SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME))  in dmaengine_pcm_new()
292 			pcm->chan[i] = dma_request_slave_channel(dev,  in dmaengine_pcm_new()
295 		if (!pcm->chan[i] && (pcm->flags & SND_DMAENGINE_PCM_FLAG_COMPAT)) {  in dmaengine_pcm_new()
296 			pcm->chan[i] = dmaengine_pcm_compat_request_channel(rtd,  in dmaengine_pcm_new()
300 		if (!pcm->chan[i]) {  in dmaengine_pcm_new()
308 				dmaengine_dma_dev(pcm, substream),  in dmaengine_pcm_new()
314 		if (!dmaengine_pcm_can_report_residue(dev, pcm->chan[i]))  in dmaengine_pcm_new()
315 			pcm->flags |= SND_DMAENGINE_PCM_FLAG_NO_RESIDUE;  in dmaengine_pcm_new()
327 	struct dmaengine_pcm *pcm = soc_component_to_pcm(component);  in dmaengine_pcm_pointer()  local
329 	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)  in dmaengine_pcm_pointer()
343 	struct dmaengine_pcm *pcm = soc_component_to_pcm(component);  in dmaengine_copy_user()  local
346 		       void *buf, unsigned long bytes) = pcm->config->process;  in dmaengine_copy_user()
409 static int dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm,  in dmaengine_pcm_request_chan_of()  argument
416 	if ((pcm->flags & (SND_DMAENGINE_PCM_FLAG_NO_DT |  in dmaengine_pcm_request_chan_of()
435 		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)  in dmaengine_pcm_request_chan_of()
445 			pcm->chan[i] = NULL;  in dmaengine_pcm_request_chan_of()
447 			pcm->chan[i] = chan;  in dmaengine_pcm_request_chan_of()
449 		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)  in dmaengine_pcm_request_chan_of()
453 	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)  in dmaengine_pcm_request_chan_of()
454 		pcm->chan[1] = pcm->chan[0];  in dmaengine_pcm_request_chan_of()
459 static void dmaengine_pcm_release_chan(struct dmaengine_pcm *pcm)  in dmaengine_pcm_release_chan()  argument
465 		if (!pcm->chan[i])  in dmaengine_pcm_release_chan()
467 		dma_release_channel(pcm->chan[i]);  in dmaengine_pcm_release_chan()
468 		if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX)  in dmaengine_pcm_release_chan()
482 	struct dmaengine_pcm *pcm;  in snd_dmaengine_pcm_register()  local
485 	pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);  in snd_dmaengine_pcm_register()
486 	if (!pcm)  in snd_dmaengine_pcm_register()
490 	pcm->component.debugfs_prefix = "dma";  in snd_dmaengine_pcm_register()
492 	pcm->config = config;  in snd_dmaengine_pcm_register()
493 	pcm->flags = flags;  in snd_dmaengine_pcm_register()
495 	ret = dmaengine_pcm_request_chan_of(pcm, dev, config);  in snd_dmaengine_pcm_register()
500 		ret = snd_soc_add_component(dev, &pcm->component,  in snd_dmaengine_pcm_register()
504 		ret = snd_soc_add_component(dev, &pcm->component,  in snd_dmaengine_pcm_register()
512 	dmaengine_pcm_release_chan(pcm);  in snd_dmaengine_pcm_register()
513 	kfree(pcm);  in snd_dmaengine_pcm_register()
528 	struct dmaengine_pcm *pcm;  in snd_dmaengine_pcm_unregister()  local
534 	pcm = soc_component_to_pcm(component);  in snd_dmaengine_pcm_unregister()
537 	dmaengine_pcm_release_chan(pcm);  in snd_dmaengine_pcm_unregister()
538 	kfree(pcm);  in snd_dmaengine_pcm_unregister()