69 	struct sst_dma *dma = sst->dma;  in sst_dsp_dma_copy()  local
71 	if (dma->ch == NULL) {  in sst_dsp_dma_copy()
79 	desc = dma->ch->device->device_prep_dma_memcpy(dma->ch, dest_addr,  in sst_dsp_dma_copy()
213 	struct sst_dma *dma = dsp->dma;  in sst_dsp_dma_get_channel()  local
222 	dma->ch = dma_request_channel(mask, dma_chan_filter, dsp);  in sst_dsp_dma_get_channel()
223 	if (dma->ch == NULL) {  in sst_dsp_dma_get_channel()
234 	ret = dmaengine_slave_config(dma->ch, &slave);  in sst_dsp_dma_get_channel()
238 		dma_release_channel(dma->ch);  in sst_dsp_dma_get_channel()
239 		dma->ch = NULL;  in sst_dsp_dma_get_channel()
248 	struct sst_dma *dma = dsp->dma;  in sst_dsp_dma_put_channel()  local
250 	if (!dma->ch)  in sst_dsp_dma_put_channel()
253 	dma_release_channel(dma->ch);  in sst_dsp_dma_put_channel()
254 	dma->ch = NULL;  in sst_dsp_dma_put_channel()
261 	struct sst_dma *dma;  in sst_dma_new()  local
282 	dma = devm_kzalloc(sst->dev, sizeof(struct sst_dma), GFP_KERNEL);  in sst_dma_new()
283 	if (!dma)  in sst_dma_new()
286 	dma->sst = sst;  in sst_dma_new()
295 	dma->chip = dw_probe(sst->dma_dev, &mem, sst_pdata->irq);  in sst_dma_new()
296 	if (IS_ERR(dma->chip)) {  in sst_dma_new()
298 		ret = PTR_ERR(dma->chip);  in sst_dma_new()
302 	sst->dma = dma;  in sst_dma_new()
307 	devm_kfree(sst->dev, dma);  in sst_dma_new()
312 void sst_dma_free(struct sst_dma *dma)  in sst_dma_free()  argument
315 	if (dma == NULL)  in sst_dma_free()
318 	if (dma->ch)  in sst_dma_free()
319 		dma_release_channel(dma->ch);  in sst_dma_free()
321 	if (dma->chip)  in sst_dma_free()
322 		dw_remove(dma->chip);  in sst_dma_free()