linux-kernel - Re: [PATCH 2/4] ASoC: Add ADAU1373 codec support

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Date:	Fri, 12 Aug 2011 10:20:46 +0900
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	Liam Girdwood <lrg@...com>, alsa-devel@...a-project.org,
	device-drivers-devel@...ckfin.uclinux.org,
	linux-kernel@...r.kernel.org, Mike Frysinger <vapier.adi@...il.com>
Subject: Re: [PATCH 2/4] ASoC: Add ADAU1373 codec support

On Fri, 2011-08-12 at 02:20 +0200, Lars-Peter Clausen wrote:
> On 08/11/2011 03:16 PM, Mark Brown wrote:

> > Sorry, what does this actually control? I guess I've been mislead but
> > from the name of the control I'd expect it to control if the outputs
> > were physically connected as mono or stereo outputs.

> It controls how Lineout and Speaker mixers distribute the left and right input
> channels to their output channels.

Ah, I see. I guess that should really be represented in DAPM so that if
we're playing a mono signal out we figure out that both left and right
channels are connected even if there's only input for one of them,
especially for the line outputs which may be connected to external
speaker drivers or something that needs power management.

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