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[3/7] ASoC: davinci-mcasp: Support for DSP_A format

Message ID 1396611107-30765-4-git-send-email-peter.ujfalusi@ti.com (mailing list archive)
State Accepted
Commit 188edc59c297fcd971d6a4ae5f5f5dacff7b315b
Headers show

Commit Message

Peter Ujfalusi April 4, 2014, 11:31 a.m. UTC 
DSP_A is like DSP_B mode but with one bit delay after the FS.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 sound/soc/davinci/davinci-mcasp.c | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index d9ea709cb6d0..7076dba66031 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -268,6 +268,13 @@  static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai,
 
 	pm_runtime_get_sync(mcasp->dev);
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_DSP_A:
+		mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR);
+		mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR);
+
+		/* 1st data bit occur one ACLK cycle after the frame sync */
+		data_delay = 1;
+		break;
 	case SND_SOC_DAIFMT_DSP_B:
 	case SND_SOC_DAIFMT_AC97:
 		mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR);