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From: "pHilipp Zabel" <philipp.zabel@gmail.com>
To: "David Brownell" <david-b@pacbell.net>
Cc: "Bill Gatliff" <bgat@billgatliff.com>,
	"Paul Mundt" <lethal@linux-sh.org>,
	"Linux Kernel list" <linux-kernel@vger.kernel.org>,
	"Andrew Morton" <akpm@osdl.org>,
	"Andrew Victor" <andrew@sanpeople.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>
Subject: Re: [patch/rfc 2.6.19-rc5] arch-neutral GPIO calls
Date: Thu, 30 Nov 2006 07:57:52 +0100	[thread overview]
Message-ID: <74d0deb30611292257n3f532abbyedef9b543b9d48ae@mail.gmail.com> (raw)
In-Reply-To: <200611221640.55574.david-b@pacbell.net>

Hi,

On 11/23/06, David Brownell <david-b@pacbell.net> wrote:
> On Tuesday 21 November 2006 7:57 am, Bill Gatliff wrote:
>
> > Once you're hiding the GPIO number behind an enumeration, you can create
> > a bitmap with more information than a single integer.  That extra
> > information could be used--- in my implementations, if any ever come
> > about--- to store routing information.
>
> But none of the existing GPIO users do that.  The goal wasn't to define
> a new notion of GPIO; it was collecting the existing ones under a single
> arch-neutral umbrella.
>
>
> > >It'd also be a big (and needless) disruption to code that's been working
> > >fine for several years now ...
> >
> > ... all of which is using the current GPIO API, you mean?  :)
>
> Effectively, yes.  I counted quite a few implementations in the current
> tree which can trivially (#defines) map to that API.

I tried to do that for pxa, the patch is attached.
So what is the state of this discussion, now that 2.6.19 is here?

I just submitted an input driver for GPIO buttons to linux-input that
we use in the handhelds.org kernel for sa1100, pxa and s3c2410 archs.
It needs some ugly
#ifdefs currently, but with common GPIO calls they all could go away.

regards
Philipp

  reply	other threads:[~2006-11-30  6:57 UTC|newest]

Thread overview: 103+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-11 23:41 [patch/rfc 2.6.19-rc5] arch-neutral GPIO calls David Brownell
2006-11-12  1:27 ` H. Peter Anvin
2006-11-12  3:04   ` David Brownell
2006-11-12  3:15     ` H. Peter Anvin
2006-11-13  3:30 ` Bill Gatliff
2006-11-13 17:38 ` Paul Mundt
2006-11-13 17:56   ` Thiago Galesi
2006-11-13 19:25     ` David Brownell
2006-11-13 19:50       ` Bill Gatliff
2006-11-13 18:19   ` Bill Gatliff
2006-11-13 18:38     ` Paul Mundt
2006-11-13 19:29       ` Bill Gatliff
2006-11-13 20:15         ` Paul Mundt
2006-11-20 21:49           ` David Brownell
2006-11-21  3:44             ` Bill Gatliff
2006-11-21  4:45               ` David Brownell
2006-11-21  5:09                 ` Bill Gatliff
2006-11-21  5:35                   ` David Brownell
2006-11-21  6:09                     ` Paul Mundt
2006-11-21 18:13                       ` David Brownell
2006-11-22  3:36                         ` Bill Gatliff
2006-11-22  3:55                           ` Paul Mundt
2006-11-22  4:45                           ` [Bulk] " David Brownell
2006-11-22  4:47                             ` Bill Gatliff
2006-11-21 15:57                     ` Bill Gatliff
2006-11-23  0:40                       ` David Brownell
2006-11-30  6:57                         ` pHilipp Zabel [this message]
2006-11-30  7:29                           ` pHilipp Zabel
2006-11-30 22:24                           ` David Brownell
2006-11-20 22:15           ` David Brownell
2006-11-21  2:56             ` Bill Gatliff
2006-11-13 20:00       ` David Brownell
2006-11-13 21:30         ` Paul Mundt
2006-11-14  3:21           ` David Brownell
2006-11-13 19:21   ` David Brownell
2006-11-13 19:43     ` Bill Gatliff
2006-11-13 20:15       ` David Brownell
2006-11-13 20:26         ` Bill Gatliff
2006-11-13 20:53           ` David Brownell
2006-11-13 20:58             ` Bill Gatliff
2006-11-13 20:29         ` Bill Gatliff
2006-11-16 14:54 ` [RFC/PATCH] arch-neutral GPIO calls: AVR32 implementation Haavard Skinnemoen
2006-11-20 21:47   ` David Brownell
2006-11-21  3:11     ` Bill Gatliff
2006-11-21  5:06       ` David Brownell
2006-11-21  5:51         ` Bill Gatliff
2006-11-21 18:19           ` David Brownell
2006-11-21  9:11     ` Haavard Skinnemoen
2006-11-21 19:03       ` David Brownell
2006-11-28 12:36         ` [RFC/PATCH] arch-neutral GPIO calls: AVR32 implementation [take 2] Haavard Skinnemoen
2006-11-30 19:05           ` David Brownell
2006-12-01  9:51             ` Haavard Skinnemoen
2006-12-20 21:04 ` [patch 2.6.20-rc1 0/6] arch-neutral GPIO calls David Brownell
2006-12-20 21:08   ` [patch 2.6.20-rc1 1/6] GPIO core David Brownell
2006-12-27 17:49     ` Pavel Machek
2006-12-28 22:05       ` David Brownell
2006-12-29  0:27         ` Pavel Machek
2006-12-30  1:18           ` David Brownell
2007-01-01 20:55             ` Pavel Machek
2007-01-01 21:27               ` David Brownell
2007-01-02 14:18                 ` Pavel Machek
2006-12-20 21:09   ` [patch 2.6.20-rc1 2/6] OMAP GPIO wrappers David Brownell
2006-12-20 21:11   ` [patch 2.6.20-rc1 3/6] AT91 " David Brownell
2006-12-21  6:10     ` Andrew Morton
2006-12-21  6:45       ` David Brownell
2006-12-20 21:12   ` [patch 2.6.20-rc1 4/6] PXA " David Brownell
2006-12-21  6:12     ` Andrew Morton
2006-12-21  6:44       ` David Brownell
2006-12-21 14:27         ` Nicolas Pitre
2006-12-21 15:03           ` pHilipp Zabel
2006-12-21 17:25             ` Nicolas Pitre
2006-12-21 19:32               ` pHilipp Zabel
2006-12-21 20:10                 ` Nicolas Pitre
2006-12-21 20:32                   ` Bill Gatliff
2006-12-22  6:53                   ` pHilipp Zabel
2006-12-28 20:47                     ` David Brownell
2006-12-30  2:15                       ` Nicolas Pitre
2006-12-30  2:38                         ` David Brownell
2007-01-01 19:43                         ` David Brownell
2006-12-30  1:13                     ` David Brownell
2006-12-21 19:25             ` David Brownell
2006-12-27 17:53     ` Pavel Machek
2006-12-28 20:48       ` David Brownell
2006-12-28 20:50         ` Pavel Machek
2006-12-28 20:53           ` Pavel Machek
2006-12-20 21:13   ` [patch 2.6.20-rc1 5/6] SA1100 " David Brownell
2006-12-21  6:13     ` Andrew Morton
2006-12-22  7:16       ` pHilipp Zabel
2006-12-22 15:05         ` Nicolas Pitre
2006-12-30  2:21         ` David Brownell
2006-12-30  3:15           ` Nicolas Pitre
2006-12-30  6:01             ` David Brownell
2006-12-30 13:59               ` pHilipp Zabel
2006-12-30 15:08                 ` Russell King
2006-12-23 11:37     ` Russell King
2006-12-23 20:39       ` David Brownell
2006-12-27 18:24     ` Pavel Machek
2006-12-20 21:14   ` [patch 2.6.20-rc1 6/6] S3C2410 " David Brownell
2006-12-21 10:33     ` Arnaud Patard
2006-12-21 15:29       ` pHilipp Zabel
2006-12-23 11:40       ` Russell King
2006-12-20 23:30   ` [patch 2.6.20-rc1 0/6] arch-neutral GPIO calls Håvard Skinnemoen
2006-12-20 23:46     ` David Brownell

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