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From: David Brownell <david-b@pacbell.net>
To: "=?iso-8859-1?q?H=E5vard?= Skinnemoen" <hskinnemoen@gmail.com>
Subject: Re: [patch 2.6.20-rc1 0/6] arch-neutral GPIO calls
Date: Wed, 20 Dec 2006 15:46:57 -0800
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Cc: "Linux Kernel list" <linux-kernel@vger.kernel.org>,
       "Andrew Morton" <akpm@osdl.org>, "Andrew Victor" <andrew@sanpeople.com>,
       "Bill Gatliff" <bgat@billgatliff.com>,
       "Haavard Skinnemoen" <hskinnemoen@atmel.com>, jamey.hicks@hp.com,
       "Kevin Hilman" <khilman@mvista.com>, "Nicolas Pitre" <nico@cam.org>,
       "Russell King" <rmk@arm.linux.org.uk>,
       "Tony Lindgren" <tony@atomide.com>,
       "pHilipp Zabel" <philipp.zabel@gmail.com>
References: <200611111541.34699.david-b@pacbell.net> <200612201304.03912.david-b@pacbell.net> <1defaf580612201530x4708cc5cs37801bf7d00a598b@mail.gmail.com>
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On Wednesday 20 December 2006 3:30 pm, H?vard Skinnemoen wrote:
> On 12/20/06, David Brownell <david-b@pacbell.net> wrote:
> > Based on earlier discussion, I'm sending a refresh of the generic GPIO
> > patch, with several (ARM based) implementations in separate patches:
> >
> >  - Core patch, doc + <asm-arm/gpio.h> + <asm-generic/gpio.h>
> >  - OMAP implementation
> >  - AT91 implementation
> >  - PXA implementation
> >  - SA1100 implementation
> >  - S3C2410 implementation
> >
> > I know there's an AVR32 implementation too; and there's been interest
> > in this for some PPC support as well.
> 
> Great, thanks Dave. Unfortunately, I'm going to be more or less
> offline for the rest of the year, but FWIW, the AVR32 implementation
> is already in -mm as part of git-avr32.patch.

That's appropriate; after all, as a programming interface, it's
appropriate that there be multiple implementations!  Presumably
that doc is missing, but the API calls _should_ make sense on
their own.


> I guess I should check 
> and see if it's in sync with the rest.

I'd at most expect you're missing an #include <asm-generic/gpio.h>
for the cansleep variants ... which only got added because folk
agreed such spinlock-unsafe calls were needed, not because anyone
had a pressing near-term need for them.  (Unlike the spinlock-safe
functionality, which is _very_ widely implemented.)


> I'll refresh the atmel_spi patch when I get back to work in january.

Heh, maybe I can even try it out by then.  ;)

- Dave

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