ASoC: imx-ssi: Remove mono support

Playing a mono track results in incorrect playback rate, ie, the audio
is played at a faster rate.

Remove mono support in the driver by setting 'channes_min' to dual-channel
and this allows mono tracks to be played correctly.

Reported-by: Gaëtan Carlier <gcembed@gmail.com>
Tested-by: Gaëtan Carlier <gcembed@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/sound/soc/fsl/imx-ssi.c b/sound/soc/fsl/imx-ssi.c
index 28dd76c7cb1c..81d7728cf67f 100644
--- a/sound/soc/fsl/imx-ssi.c
+++ b/sound/soc/fsl/imx-ssi.c
@@ -380,13 +380,14 @@ static int imx_ssi_dai_probe(struct snd_soc_dai *dai)
 static struct snd_soc_dai_driver imx_ssi_dai = {
         .probe = imx_ssi_dai_probe,
         .playback = {
-                .channels_min = 1,
+                /* The SSI does not support monaural audio. */
+                .channels_min = 2,
                 .channels_max = 2,
                 .rates = SNDRV_PCM_RATE_8000_96000,
                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
         },
         .capture = {
-                .channels_min = 1,
+                .channels_min = 2,
                 .channels_max = 2,
                 .rates = SNDRV_PCM_RATE_8000_96000,
                 .formats = SNDRV_PCM_FMTBIT_S16_LE,