audio: dai-zephyr: Allow address decrement/increment on NXP's EDMA

NXP's EDMA can automatically adjust the source and destination addresses upon transfer completion. As such, we need to indicate how the adjustment should be performed. In the case of playback, the source address should be decremented, while in the case of capture, the destination address should be the one being decremented. Signed-off-by: Laurentiu Mihalcea <[email protected]>
thesofproject · Nov 24, 2023 · c431c0d · c431c0d
1 parent f604a63
commit c431c0d
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/audio/dai-zephyr.c b/src/audio/dai-zephyr.c
@@ -719,6 +719,15 @@ static int dai_set_dma_config(struct dai_data *dd, struct comp_dev *dev)
 		dma_block_cfg->block_size = config->elem_array.elems[i].size;
 		dma_block_cfg->source_address = config->elem_array.elems[i].src;
 		dma_block_cfg->dest_address = config->elem_array.elems[i].dest;
+		if (IS_ENABLED(CONFIG_DMA_NXP_IMX_EDMA)) {
+			if (dev->direction == SOF_IPC_STREAM_PLAYBACK) {
+				dma_block_cfg->source_addr_adj = DMA_ADDR_ADJ_DECREMENT;
+				dma_block_cfg->dest_addr_adj = DMA_ADDR_ADJ_INCREMENT;
+			} else {
+				dma_block_cfg->source_addr_adj = DMA_ADDR_ADJ_INCREMENT;
+				dma_block_cfg->dest_addr_adj = DMA_ADDR_ADJ_DECREMENT;
+			}
+		}
 		prev = dma_block_cfg;
 		prev->next_block = ++dma_block_cfg;
 	}