ASoC: amd: removed separate byte count variables for playback and capture

Removed separate byte count variables for playback and capture.

Signed-off-by: Vijendar Mukunda <[e-mail]>
Reviewed-by: Daniel Kurtz <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

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

···
 	buffersize = frames_to_bytes(runtime, runtime->buffer_size);
 	bytescount = acp_get_byte_count(rtd);
 
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		if (bytescount > rtd->i2ssp_renderbytescount)
-			bytescount = bytescount - rtd->i2ssp_renderbytescount;
-	} else {
-		if (bytescount > rtd->i2ssp_capturebytescount)
-			bytescount = bytescount - rtd->i2ssp_capturebytescount;
-	}
+	if (bytescount > rtd->bytescount)
+		bytescount -= rtd->bytescount;
 	pos = do_div(bytescount, buffersize);
 	return bytes_to_frames(runtime, pos);
 }
···
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 	case SNDRV_PCM_TRIGGER_RESUME:
 		bytescount = acp_get_byte_count(rtd);
+		if (rtd->bytescount == 0)
+			rtd->bytescount = bytescount;
 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-			if (rtd->i2ssp_renderbytescount == 0)
-				rtd->i2ssp_renderbytescount = bytescount;
 			acp_dma_start(rtd->acp_mmio, rtd->ch1, false);
 			while (acp_reg_read(rtd->acp_mmio, mmACP_DMA_CH_STS) &
 				BIT(rtd->ch1)) {
···
 				}
 				cpu_relax();
 			}
-		} else {
-			if (rtd->i2ssp_capturebytescount == 0)
-				rtd->i2ssp_capturebytescount = bytescount;
 		}
 		acp_dma_start(rtd->acp_mmio, rtd->ch2, true);
 		ret = 0;
···
 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 			acp_dma_stop(rtd->acp_mmio, rtd->ch1);
 			ret =  acp_dma_stop(rtd->acp_mmio, rtd->ch2);
-			rtd->i2ssp_renderbytescount = 0;
 		} else {
 			acp_dma_stop(rtd->acp_mmio, rtd->ch2);
 			ret = acp_dma_stop(rtd->acp_mmio, rtd->ch1);
-			rtd->i2ssp_capturebytescount = 0;
 		}
+		rtd->bytescount = 0;
 		break;
 	default:
 		ret = -EINVAL;

sound/soc/amd/acp.h

···
 	u32 byte_cnt_high_reg_offset;
 	u32 byte_cnt_low_reg_offset;
 	uint64_t size;
-	u64 i2ssp_renderbytescount;
-	u64 i2ssp_capturebytescount;
+	u64 bytescount;
 	void __iomem *acp_mmio;
 };