linux-kernel - Re: GPIO support for HTC Dream

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Message-ID: <20091215212125.GQ24406@elf.ucw.cz>
Date:	Tue, 15 Dec 2009 22:21:26 +0100
From:	Pavel Machek <pavel@....cz>
To:	Daniel Walker <dwalker@...eaurora.org>
Cc:	Arve Hj?nnev?g <arve@...roid.com>,
	H Hartley Sweeten <hartleys@...ionengravers.com>,
	Ryan Mallon <ryan@...ewatersys.com>,
	Iliyan Malchev <malchev@...gle.com>,
	Brian Swetland <swetland@...gle.com>,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: GPIO support for HTC Dream

On Tue 2009-12-15 12:07:06, Daniel Walker wrote:
> On Tue, 2009-12-15 at 20:12 +0100, Pavel Machek wrote:
> > > > One other thing.  Are the gpio's handled by Pavel's driver actually from the
> > > > MSM chip or from an external CPLD?  The registers are all defined as:
> > > >
> > > > +               .reg = reg_num + DREAM_CPLD_BASE,
> > > >
> > > > If they are external from the MSM chip this driver should probably be renamed
> > > > to something more appropriate since it is probably dream specific and not
> > > > generic to the msm architecture.
> > > 
> > > These are board specific gpios. I think it would be less confusing if
> > > the msm gpio support was added first.
> > 
> > I did not see msm-generic gpios in the trees, where are they? What is
> > connected over them?
> 
> Did you look at arch/arm/mach-msm/gpio.[ch] ? It looks like there some
> idle related code in there, and "SMEM" is connected through that code.
> (unless I'm looking at an older tree.)

Aha, I see... more gpios. No wonder I had problems with MMC and
framebuffer....

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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