ASoC: Samsung: Added to support mono recording

The dma size will be changed by requested number of
channel(mono/stereo) from platform. For mono recording,
channels_min value should be 1.

Signed-off-by: Sangsu Park <sangsu4u.park@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 6553b19c70c7..6ac7b8281a02 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -559,6 +559,17 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
                 mod |= MOD_DC1_EN;
                 break;
         case 2:
+                if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+                        i2s->dma_playback.dma_size = 4;
+                else
+                        i2s->dma_capture.dma_size = 4;
+                break;
+        case 1:
+                if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+                        i2s->dma_playback.dma_size = 2;
+                else
+                        i2s->dma_capture.dma_size = 2;
+
                 break;
         default:
                 dev_err(&i2s->pdev->dev, "%d channels not supported\n",
@@ -963,7 +974,7 @@ struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec)
         i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS;
 
         if (!sec) {
-                i2s->i2s_dai_drv.capture.channels_min = 2;
+                i2s->i2s_dai_drv.capture.channels_min = 1;
                 i2s->i2s_dai_drv.capture.channels_max = 2;
                 i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES;
                 i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS;