On 03/27/2012 05:34 AM, Omair Mohammed Abdullah wrote:
On Tuesday 27 March 2012 09:02 AM, Omair Mohammed Abdullah wrote:
The PCM short frame sync sends a short (1 clock length) sync signal before the MSB of data. The PCM long frame sync sends a 1 word length sync signal along with the data.
Signed-off-by: Omair Mohammed Abdullahomair.m.abdullah@linux.intel.com
include/sound/soc-dai.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index c429f24..dc94b25 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -32,6 +32,8 @@ struct snd_soc_dapm_widget; #define SND_SOC_DAIFMT_DSP_B 5 /* L data MSB during FRM LRC */ #define SND_SOC_DAIFMT_AC97 6 /* AC97 */ #define SND_SOC_DAIFMT_PDM 7 /* Pulse density modulation */ +#define SND_SOC_DAIFMT_SHORT_SYNC 8 /* FRM for 1 clock before MSB */ +#define SND_SOC_DAIFMT_LONG_SYNC 9 /* FRM for 1 word starting with MSB */
/* left and right justified also known as MSB and LSB respectively */ #define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J
What I am looking for is something like this. But SND_SOC_DAIFMT_SHORT_SYNC might be the same as SND_SOC_DAIFMT_DSP_A.
Yes it is. And if you really only have two slots your long sync is SND_SOC_DAIFMT_LEFT_J, but with the bit clock inverted.