[alsa-devel] [PATCH 6/7] ASoC: amd: 16bit resolution support for bt i2s instance

[Vijendar Mukunda]

added 16bit resolution support for bt i2s instance for stoney.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda at amd.com>
---
 sound/soc/amd/acp-pcm-dma.c | 23 +++++++++++++++++++----
 sound/soc/amd/acp.h         |  1 +
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index ad46719..a6787ac 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -919,10 +919,25 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
 
 	if (adata->asic_type == CHIP_STONEY) {
 		val = acp_reg_read(adata->acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-			val |= ACP_I2S_SP_16BIT_RESOLUTION_EN;
-		else
-			val |= ACP_I2S_MIC_16BIT_RESOLUTION_EN;
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+			switch (rtd->i2s_play_instance) {
+			case I2S_BT_INSTANCE:
+				val |= ACP_I2S_BT_16BIT_RESOLUTION_EN;
+				break;
+			case I2S_SP_INSTANCE:
+			default:
+				val |= ACP_I2S_SP_16BIT_RESOLUTION_EN;
+			}
+		} else {
+			switch (rtd->i2s_capture_instance) {
+			case I2S_BT_INSTANCE:
+				val |= ACP_I2S_BT_16BIT_RESOLUTION_EN;
+				break;
+			case I2S_SP_INSTANCE:
+			default:
+				val |= ACP_I2S_MIC_16BIT_RESOLUTION_EN;
+			}
+		}
 		acp_reg_write(val, adata->acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);
 	}
 	size = params_buffer_bytes(params);
diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h
index d40749a..cd83a03 100644
--- a/sound/soc/amd/acp.h
+++ b/sound/soc/amd/acp.h
@@ -105,6 +105,7 @@
 #define mmACP_I2S_16BIT_RESOLUTION_EN       0x5209
 #define ACP_I2S_MIC_16BIT_RESOLUTION_EN 0x01
 #define ACP_I2S_SP_16BIT_RESOLUTION_EN	0x02
+#define ACP_I2S_BT_16BIT_RESOLUTION_EN	0x04
 #define I2S_SP_INSTANCE 1
 #define I2S_BT_INSTANCE 3
 enum acp_dma_priority_level {
-- 
2.7.4