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

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Date:	Thu, 19 May 2011 21:11:56 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Shawn Guo <shawn.guo@...escale.com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Jonas Aaberg <jonas.aberg@...ricsson.com>,
	linux-kernel@...r.kernel.org,
	Grant Likely <grant.likely@...retlab.ca>,
	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 09:56:32PM +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.

Sascha


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