ASoC: AMD: Simplify trigger handler

Now that the I2S channel names are fixed, and DMA data flow order is
consistent (ch1 then ch2), we can simplify channel start order:
start the upstream channel and then the downstream channel for both
playback and capture cases.
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/acp-pcm-dma.c

@@ -1024,10 +1024,7 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd)
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 	case SNDRV_PCM_TRIGGER_RESUME:
 		rtd->bytescount = acp_get_byte_count(rtd);
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-			acp_dma_start(rtd->acp_mmio, rtd->ch1);
-			acp_dma_start(rtd->acp_mmio, rtd->ch2);
-		} else {
+		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 			if (rtd->capture_channel == CAP_CHANNEL0) {
 				acp_dma_cap_channel_disable(rtd->acp_mmio,
 							    CAP_CHANNEL1);
@@ -1040,9 +1037,9 @@ static int acp_dma_trigger(struct snd_pcm_substream *substream, int cmd)
 				acp_dma_cap_channel_enable(rtd->acp_mmio,
 							   CAP_CHANNEL1);
 			}
-			acp_dma_start(rtd->acp_mmio, rtd->ch2);
-			acp_dma_start(rtd->acp_mmio, rtd->ch1);
 		}
+		acp_dma_start(rtd->acp_mmio, rtd->ch1);
+		acp_dma_start(rtd->acp_mmio, rtd->ch2);
 		ret = 0;
 		break;
 	case SNDRV_PCM_TRIGGER_STOP: