[PATCH 25/133] [Jaunty SRU] ARM.imx51 Freescale:ENGR00107688 ASOC: Resolve 24/32-bit mono wav playing problem on sgtl5000

[Bryan Wu]

Brad Figg wrote:
> From: Lily Zhang <r58066 at freescale.com>
> 
> Wav sound plays twice faster than normal when it's format is 24 or 32
> bit mono. In ssi normal operating mode, DC=0 provides continuous
> periodic data word transfer and a bit-length frame sync must be used
> in this case. Sgtl5000 codec master provides word length frame sync,
> so DC should be set as frame/WL-1.
> 
> Signed-off-by: Lionel Xu <r63889 at freescale.com>
> Signed-off-by: Brad Figg <brad.figg at canonical.com>
> ---
>  sound/soc/imx/imx-3stack-sgtl5000.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/sound/soc/imx/imx-3stack-sgtl5000.c b/sound/soc/imx/imx-3stack-sgtl5000.c
> index 58fae69..74f5e11 100644
> --- a/sound/soc/imx/imx-3stack-sgtl5000.c
> +++ b/sound/soc/imx/imx-3stack-sgtl5000.c
> @@ -110,7 +110,7 @@ static int imx_3stack_audio_hw_params(struct snd_pcm_substream *substream,
>  	/* set i.MX active slot mask */
>  	snd_soc_dai_set_tdm_slot(cpu_dai,
>  				 channels == 1 ? 0xfffffffe : 0xfffffffc,
> -				 channels);
> +				 2);

The number of slot is changed to 2 here, but I failed to see any reason which
was described in the git log.

Eric, are you familiar with this ASoC change?

Thanks
-Bryan