ASoC: atmel_ssc_dai: implement left-justified data mode

Enable support for left-justified data mode for SSC-codec link.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/44fa6b700421e80778f20ff9ead2b148cf6d2e92.1566677788.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
index 7dc6ec9b8c7a..48e9eef34c0f 100644
--- a/sound/soc/atmel/atmel_ssc_dai.c
+++ b/sound/soc/atmel/atmel_ssc_dai.c
@@ -564,6 +564,15 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
 
         switch (ssc_p->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 
+        case SND_SOC_DAIFMT_LEFT_J:
+                fs_osync = SSC_FSOS_POSITIVE;
+                fs_edge = SSC_START_RISING_RF;
+
+                rcmr =    SSC_BF(RCMR_STTDLY, 0);
+                tcmr =    SSC_BF(TCMR_STTDLY, 0);
+
+                break;
+
         case SND_SOC_DAIFMT_I2S:
                 fs_osync = SSC_FSOS_NEGATIVE;
                 fs_edge = SSC_START_FALLING_RF;