From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lars-Peter Clausen <lars@metafoo.de>
Subject: Re: [PATCH 1/4] ASoC: DAPM: Allow multiple mixer
 sources to be routed via the same switch
Date: Thu, 11 Aug 2011 11:59:36 +0200
Message-ID: <4E43A808.4050105@metafoo.de>
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	<20110811093140.GB18454@opensource.wolfsonmicro.com>
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To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: device-drivers-devel@blackfin.uclinux.org, alsa-devel@alsa-project.org, Liam Girdwood <lrg@ti.com>, Mike Frysinger <vapier.adi@gmail.com>, linux-kernel@vger.kernel.org
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On 08/11/2011 11:31 AM, Mark Brown wrote:
> On Wed, Aug 10, 2011 at 05:52:41AM +0200, Lars-Peter Clausen wrote:
>> Currently it is only possible to route one source per switch into a mixer.
>> This patch modifies the code, so that it is possible to route multiple sources
>> into a mixer via the same switch. One use-case for this is routing a stereo
>> channel pair into a mono-mixer via the same switch.
>
> I'd have thought the dapm_is_shared_control() stuff should handle this?


The dapm_is_shared_control() stuff is about sharing kcontrols between multiple
muxes. This is about sharing the same kcontrol between multiple paths of the
same mixer.

i.e

{ "Mono Mixer", "DAC", "Left DAC" },
{ "Mono Mixer", "DAC", "Right DAC" },

doesn't work without this patch.