ASoC: omap-mcbsp: Support SND_SOC_DAIFMT_CBM_CFS for omap3/4

Add SND_SOC_DAIFMT_CBM_CFS support for omap3/omap4. The patch was tested on
a pandaboard-es board connected to the pcm1792a codec. mcbspx_fsx must
configured as output and mcbspx_clkx must be configured as input.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 7483efb6dc67..6c19bba23570 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -433,6 +433,11 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
                 /* Sample rate generator drives the FS */
                 regs->srgr2     |= FSGM;
                 break;
+        case SND_SOC_DAIFMT_CBM_CFS:
+                /* McBSP slave. FS clock as output */
+                regs->srgr2     |= FSGM;
+                regs->pcr0      |= FSXM;
+                break;
         case SND_SOC_DAIFMT_CBM_CFM:
                 /* McBSP slave */
                 break;