linux-kernel - Re: [PATCH] ASoC: dapm: Add support for multi register mux

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Message-ID: <20140409155631.GP6518@sirena.org.uk>
Date:	Wed, 9 Apr 2014 16:56:31 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Arun Shamanna Lakshmi <aruns@...dia.com>
Cc:	lars@...afoo.de, lgirdwood@...il.com, swarren@...dotorg.org,
	perex@...ex.cz, tiwai@...e.de, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org, Songhee Baek <sbaek@...dia.com>
Subject: Re: [PATCH] ASoC: dapm: Add support for multi register mux

On Fri, Apr 04, 2014 at 05:12:10PM -0700, Arun Shamanna Lakshmi wrote:
> 1. Modify soc_enum struct to handle pointers for reg and mask
> 2. Add dapm get and put APIs for multi register one hot encoded mux
> 3. Update snd_soc_dapm_update struct to support multiple reg update

If you've got several changes like this it's probably a sign that the
change ought to be split into a patch series.

I'm still not seeing any handling of the issues with having invalid
configurations written to the device during the process of carrying out
multi register updates; I did raise this with one of the earlier
versions but don't recall any response.

I also think I agree with Takashi on this one - trying to implement this
without adding an abstraction for the control values is making the code
more complex than it needs to be, all the conditional paths for _ONEHOT
aren't pretty (and don't use switches which is the usual idiom for this
stuff if it's not indirected via functions).

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