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

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Message-ID: <0D753D10438DA54287A00B027084269764D3045B3B@AUSP01VMBX24.collaborationhost.net>
Date:	Thu, 19 May 2011 16:18:56 -0500
From:	H Hartley Sweeten <hartleys@...ionengravers.com>
To:	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawn.guo@...escale.com>
CC:	Linus Walleij <linus.walleij@...ricsson.com>,
	Jonas Aaberg <jonas.aberg@...ricsson.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Lee Jones <lee.jones@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Jamie Iles <jamie@...ieiles.com>
Subject: RE: [PATCH 02/10] mach-u300: rewrite gpio driver, move to
 drivers/gpio

On Thursday, May 19, 2011 12:12 PM, 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.

Jamie Iles (cc'ed) posted some patches that extended the basic_mmio_gpio
driver so that it could be used as a library by other gpio drivers.

Jamie, could you re-post that series to the linux-arm-kernel list for
review?

Thanks,
Hartley--
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