linux-kernel - Re: GPIO support for HTC Dream

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Date:	Wed, 16 Dec 2009 23:53:42 +0100
From:	Pavel Machek <pavel@....cz>
To:	H Hartley Sweeten <hartleys@...ionengravers.com>
Cc:	Arve Hj?nnev?g <arve@...roid.com>,
	Ryan Mallon <ryan@...ewatersys.com>,
	Daniel Walker <dwalker@...eaurora.org>,
	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 Fri 2009-12-11 18:12:35, H Hartley Sweeten wrote:
> On Friday, December 11, 2009 3:41 PM, Arve Hj?nnev?g wrote:
> 
> <snip>
> 
> >> Now, it will still need some cleanups -- I'm not sure if gpios are
> >> dream-specific or generic for whole msm.... I kind of assume they
> >> should be generic for msm. Google people, can you help?
> >
> > I'm not exactly sure what you are asking. Gpios in general are not
> > dream specific, the code in board-dream-gpio.c is. Some gpios (e.g.
> > DREAM_4_BALL_UP_0) are used for a dream specific function, but point
> > to a gpio that is generic to the msm architecture.
> 
> <snip>
> 

> >> +++ b/arch/arm/Kconfig
> >> +       select GENERIC_GPIO
> >> +       select ARCH_REQUIRE_GPIOLIB
> >
> > Please do not do this in a board specific change. You have not changed
> > the msm generic gpio support to use gpiolib.
> 
> Where is the msm tree located?  mach-msm in mainline doesn't appea to
> have _any_ gpio support.  

Right.

> Is Pavel's implementation generic enough to
> work with any msm based board?

I think so but I'm not sure; thats what I wanted google to
clarify. Lets keep it dream-specific for now...
									Pavel

-- 
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