From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lars-Peter Clausen <lars@metafoo.de>
Subject: Re: [PATCH 14/14] ASoC: wm9712/wm9713: Use shared
	controls
Date: Fri, 31 Oct 2014 18:55:21 +0100
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To: Mark Brown <broonie@kernel.org>
Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>, patches@opensource.wolfsonmicro.com, Liam Girdwood <lgirdwood@gmail.com>, alsa-devel@alsa-project.org
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On 10/31/2014 06:40 PM, Mark Brown wrote:
> On Thu, Oct 30, 2014 at 09:01:11PM +0100, Lars-Peter Clausen wrote:
>
>> Note: This changes the exposed controls, instead of having one "Left HP
>> Mixer ..." and one "Right HP Mixer ..." control for each input there will
>> only be a single "HP Mixer ..." control.
>
> This change would be a win except for the above - these devices were
> very widely deployed in fairly popular devices like the Sharp Zaurus
> devices so there's quite a bit of deployed distro config in things like
> Angstrom which would get broken if we updated, and some user community
> remaining too.  On balance I'd say that the cleanup to use the new
> feature isn't worth the disruption it'd cause to userspace.

It was worth a try ;) We can still clean this up using custom put/get 
handlers instead of virtual registers.