linux-kernel - Re: [alsa-devel] [PATCH 2/4] ASoC: cx20442: add bias control over a platform provided regulator

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Date:	Tue, 27 Dec 2011 17:26:00 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Janusz Krzysztofik <jkrzyszt@....icnet.pl>
Cc:	alsa-devel@...a-project.org, Tony Lindgren <tony@...mide.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-omap@...r.kernel.org, Liam Girdwood <lrg@...com>,
	Jarkko Nikula <jarkko.nikula@...mer.com>
Subject: Re: [alsa-devel] [PATCH 2/4] ASoC: cx20442: add bias control over a
 platform provided regulator

On Tue, Dec 27, 2011 at 03:16:08PM +0100, Janusz Krzysztofik wrote:
> On Monday 26 of December 2011 at 12:02:01, Mark Brown wrote:

> > which would look a lot more natural - you shouldn't need to remember if
> > the regulator is enabled, you should just turn it on in the STANDBY to
> > PREPARE transition and turn it off in the ON to PREPARE or PREPARE to
> > STANDBY transitions.

> Can I assume STANDBY or OFF at the time the codec .remove method is 
> called? If not, is there a helper function available which can be called 
> in order to perform all those ON -> PREPARE -> STANDBY [-> OFF] transitions before calling regulator_put()?

It'll be in STANDBY or OFF depending on if the device sets
idle_bias_off.
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