linux-kernel - Re: [PATCH] ASoC: tda998x: add a codec to the HDMI transmitter

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Message-ID: <20140703074959.7c489912@armhf>
Date:	Thu, 3 Jul 2014 07:49:59 +0200
From:	Jean-Francois Moine <moinejf@...e.fr>
To:	Mark Brown <broonie@...nel.org>
Cc:	Andrew Lunn <andrew@...n.ch>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	devicetree@...r.kernel.org, alsa-devel@...a-project.org,
	lgirdwood@...il.com, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, Rob Clark <robdclark@...il.com>,
	Dave Airlie <airlied@...il.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ASoC: tda998x: add a codec to the HDMI transmitter

On Wed, 2 Jul 2014 20:42:52 +0100
Mark Brown <broonie@...nel.org> wrote:

> > I tested this CODEC with both DAPM and DPCM. If the audio subsystem
> > asks for streaming on both I2S and S/PDIF, only the last call is served
> > (this depends on the order of the DAI links in the audio card creation
> > table).  
> 
> I'd expect this to return an error for the busy DAI rather than just
> silently ignore it failing to start or (better) implement some control
> to let the user select which of the DAIs is active.

Mark,

This is not an error. If the audio subsystem (DPCM, not the user)
chooses to activate both I2S and S/PDIF, this means the HDMI audio may
be taken either from I2S or from S/PDIF: both inputs have the right
format and rate.

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/
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