ASoC: OMAP: Add DSP_A mode support for mcbsp

DSP_A mode is similar to the DSP_B, but the MSB is delayed with
one bclk (appears after the FS pulse and not under it).

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 402a1eb7bd3f..2b4a8da09918 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -287,6 +287,7 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
                 regs->srgr2     |= FPER(wlen * channels - 1);
                 regs->srgr1     |= FWID(wlen - 1);
                 break;
+        case SND_SOC_DAIFMT_DSP_A:
         case SND_SOC_DAIFMT_DSP_B:
                 regs->srgr2     |= FPER(wlen * channels - 1);
                 regs->srgr1     |= FWID(wlen * channels - 2);
@@ -330,6 +331,13 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
                 regs->rcr2      |= RDATDLY(1);
                 regs->xcr2      |= XDATDLY(1);
                 break;
+        case SND_SOC_DAIFMT_DSP_A:
+                /* 1-bit data delay */
+                regs->rcr2      |= RDATDLY(1);
+                regs->xcr2      |= XDATDLY(1);
+                /* Invert FS polarity configuration */
+                temp_fmt ^= SND_SOC_DAIFMT_NB_IF;
+                break;
         case SND_SOC_DAIFMT_DSP_B:
                 /* 0-bit data delay */
                 regs->rcr2      |= RDATDLY(0);