linux-kernel - Re: [alsa-devel] [PATCH] ASoC: simple-card: overwrite DAIFMT_MASTER of cpu

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Message-ID: <20140312014927.GK28112@sirena.org.uk>
Date:	Wed, 12 Mar 2014 01:49:27 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Kuninori Morimoto <kuninori.morimoto.gx@...il.com>
Cc:	Nicolin Chen <Guangyu.Chen@...escale.com>, moinejf@...e.fr,
	alsa-devel@...a-project.org, kuninori.morimoto.gx@...esas.com,
	linux-kernel@...r.kernel.org, lgirdwood@...il.com,
	Li.Xiubo@...escale.com
Subject: Re: [alsa-devel] [PATCH] ASoC: simple-card: overwrite DAIFMT_MASTER
 of	cpu_dai->fmt

On Tue, Mar 11, 2014 at 06:32:32PM -0700, Kuninori Morimoto wrote:
> > The current simple-card driver separates the daimft for cpu_dai and codec_dai.
> > So we might get different values for them (0x4003 and 0x1003 for example):
> > 
> > asoc-simple-card sound-cs42888.12: cpu : 2024000.esai / 4003 / 132000000
> > asoc-simple-card sound-cs42888.12: codec : cs42888 / 1003 / 24576000
> > asoc-simple-card sound-cs42888.12: cs42888 <-> 2024000.esai mapping ok

> cpu   = 4003 : SND_SOC_DAIFMT_CBS_CFS | SND_SOC_DAIFMT_LEFT_J
> codec = 1003 : SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_LEFT_J

> codec is master, cpu is slave...
> what is problem ??
> Am I misunderstanding ?

The C in those constants stands for CODEC and the values should be
identical for both ends of the link.

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