linux-kernel - Re: spitz: add gpio button support (fixes regression)

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Message-Id: <1255685315.5470.3.camel@hammer.suse.cz>
Date:	Fri, 16 Oct 2009 11:28:35 +0200
From:	Stanislav Brabec <utx@...guin.cz>
To:	Pavel Machek <pavel@....cz>
Cc:	Eric Miao <eric.y.miao@...il.com>, Andrew Morton <akpm@...l.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	rpurdie@...ys.net, lenz@...wisc.edu,
	kernel list <linux-kernel@...r.kernel.org>,
	Dirk@...er-online.de, arminlitzel@....de,
	Cyril Hrubis <metan@....cz>, thommycheck@...il.com,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	dbaryshkov@...il.com, omegamoon@...il.com
Subject: Re: spitz: add gpio button support (fixes regression)

Pavel Machek wrote:
> On Thu 2009-10-15 23:47:32, Stanislav Brabec wrote:
> > Pavel Machek wrote:
> > >Well, resume is hit by second regression.
> > >
> > >Suspend key.... I restored it to the level of functionality in
> > >2.6.31 :-).
> > 
> > > > +		.type	= EV_KEY,
> > > > +		.code	= KEY_SUSPEND,
> > 
> > I guess it should be EV_PWR. Then it will at least go to suspend.
> 
> Does it actually go to suspend with that change?

Yes.

> (Actually, I wonder how it could have ever worked: userspace should
> certainly be in a loop there; kernel should not suspend machine on its
> own. In -rp kernels, kernel _does_ suspend on its own, but... I'm not
> sure if that's suitable for mainline).

At least userspace apmd should be able to enter into suspend process
(tested in 2.6.26-RP, not yet verified in 2.6.32-rc*).

I don't know, what is the preferred way in recent days, but Tosa does
the same.

-- 
Best Regards / S pozdravem,

Stanislav Brabec
software developer
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