linux-kernel - Re: [REPOST RFC PATCH 0/3] New "gpio-poweroff" driver to turn off platform devices with GPIOs

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Message-ID: <20111214120240.GC25088@sirena.org.uk>
Date:	Wed, 14 Dec 2011 12:02:40 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	"Moffett, Kyle D" <Kyle.D.Moffett@...ing.com>
Cc:	Rob Herring <robherring2@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>, Liam Girdwood <lrg@...com>,
	Grant Likely <grant.likely@...retlab.ca>
Subject: Re: [REPOST RFC PATCH 0/3] New "gpio-poweroff" driver to turn off
 platform devices with GPIOs

On Tue, Dec 13, 2011 at 02:44:48PM -0600, Moffett, Kyle D wrote:

> I looked at it a bit when I was generalizing my code, but it seemed
> dramatically more complicated than I needed, and I couldn't see any
> reasonable way to hook it from the machine_poweroff() code.

Some ST platform had to do odd stuff with regulators to power off, it
made a platform device representing the odd poweroff code.

> There's also the fact that I was looking for a pure-device-tree type
> of driver and the regulator framework does not seem to support the
> standard OF-platform probe system.

The regulator API in -next has DT bindings.
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