ASoC: fsl_ssi: Set default slot number for common cases

For those platforms using DAI master mode like I2S, it's better to pre-set
a default slot number so that there's no need for these common cases to set
the slot number from its machine driver any more.

Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 6c2f040f49ae..7864ec5cf5f9 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -711,6 +711,17 @@ static int fsl_ssi_setup(struct fsl_ssi_private *ssi_private)
         if (ssi_private->imx_ac97)
                 fsl_ssi_setup_ac97(ssi_private);
 
+        /*
+         * Set a default slot number so that there is no need for those common
+         * cases like I2S mode to call the extra set_tdm_slot() any more.
+         */
+        if (!ssi_private->imx_ac97) {
+                write_ssi_mask(&ssi->stccr, CCSR_SSI_SxCCR_DC_MASK,
+                                CCSR_SSI_SxCCR_DC(2));
+                write_ssi_mask(&ssi->srccr, CCSR_SSI_SxCCR_DC_MASK,
+                                CCSR_SSI_SxCCR_DC(2));
+        }
+
         return 0;
 }