From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lars-Peter Clausen <lars@metafoo.de>
Subject: Re: How to specify data format if playback/capture
 were different ?
Date: Tue, 21 May 2013 13:58:19 +0200
Message-ID: <519B615B.5070409@metafoo.de>
References: <87ppwl3v71.wl%kuninori.morimoto.gx@renesas.com>
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To: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Linux-ALSA <alsa-devel@alsa-project.org>, Mark Brown <broonie@opensource.wolfsonmicro.com>, Liam Girdwood <lgirdwood@gmail.com>, Simon <horms@verge.net.au>, Kuninori Morimoto <kuninori.morimoto.gx@gmail.com>
List-Id: alsa-devel@alsa-project.org

On 05/21/2013 04:47 AM, Kuninori Morimoto wrote:
> 
> Hi Mark, and ALSA ML
> 
> Now, I'm creating ak4554 AD/DA.
> My question is about data format.
> 
> If my understand is correct,
> we can specify cpu/codec deivce data format by using
> 
> 	snd_soc_dai_set_fmt(dai, SND_SOC_DAIFMT_xxx);
> 
> But, ak4554 case, data formats are
>  playback : SND_SOC_DAIFMT_RIGHT_J
>  capture  : SND_SOC_DAIFMT_LEFT_J
> and, it can't exchange this data format.
> 
> CPU driver should set these information for ak4554 when playback/capture.
> 
> Then, how to specify these data format on ALSA SoC ?

You can add two different DAIs one for playback one for capture. Then you
can specify the format for each.

- Lars