linux-kernel - Re: [PATCH 02/10] mach-u300: rewrite gpio driver, move to drivers/gpio

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Message-ID: <20110520070127.GD21285@ponder.secretlab.ca>
Date:	Fri, 20 May 2011 01:01:27 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	Shawn Guo <shawn.guo@...escale.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Jonas Aaberg <jonas.aberg@...ricsson.com>,
	linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 02/10] mach-u300: rewrite gpio driver, move to
 drivers/gpio

On Thu, May 19, 2011 at 09:11:56PM +0200, Sascha Hauer wrote:
> On Thu, May 19, 2011 at 09:56:32PM +0800, Shawn Guo wrote:
> > On Thu, May 19, 2011 at 02:21:27PM +0200, Linus Walleij wrote:
> > > On Thu, May 19, 2011 at 10:56 AM, Shawn Guo <shawn.guo@...escale.com> wrote:
> > > 
> > > > I start working on moving mxs gpio (arch/arm/mach-mxs/gpio.c) into
> > > > driver/gpio, and I see the possibility to go a different approach
> > > > from U300 one posted here.
> > > 
> > > I've tried to figure out what relation the mail has to the U300 driver
> > > but cannot find any, more than that it's moving a driver... Please
> > > start a new mail thread.
> > > 
> > I will post mxs-gpio driver once I get it done.  Then please review
> > the code and see the difference between mxs-gpio and u300-gpio,
> > though these hardwares have something in common.
> 
> I'm pretty sure they have something in common and even more that *all*
> gpio drivers have something in common. I wonder if it really makes sense
> to move the gpio driver to drivers/gpio without creating a common
> mmio_gpio_chip beforehand. This can't be very hard.

already done and queued for 2.6.39.  It may not be in it's final form,
and I'll possibly change the name, but take a look at the bgpio_chip
patches that were circulated on the list, and will be in my gpio/next
branch on git://git.secretlab.ca/git/linux-2.6

That said, I don't mind moving stuff into drivers/gpio first and
consolidating it after.

g.

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