Re: [RFC 2.6.28 1/3] gpiolib: add batch set/get

["Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>]

Hello Jaya,

On Sun, Jan 25, 2009 at 05:54:47PM +0800, Jaya Kumar wrote:
> - split the patches into generic, arch specific and am300epd
I would swap the order to have:

	generic
	am300epd
	pxa specific

This way the tree of the second commit is a test case for the generic
implementation.

> - adjusting the API to remove width (note, the actual API call where
>   width was dropped is in the arch specific code, not here.)
Nevertheless I would document the "generic" per arch specific
implementation in gpio.txt.  For the functions like __gpio_get_value you
can just do

	#define gpio_get_value(gpio) __gpio_get_value(gpio)

but for your batch functions you need something like

	#define gpio_set_batch(startpin, mask, values) \
		({ u32 __mask = mask; __gpio_set_batch(startpin, __mask, fls(__mask), values);})

Maybe better use/recommend an inline function?

> Cc: David Brownell <david-b@pacbell.net>
> Cc: Eric Miao <eric.miao@marvell.com>
> Cc: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
> Cc: Geert Uytterhoeven <geert@linux-m68k.org>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: linux-arm-kernel@lists.arm.linux.org.uk
> Cc: linux-fbdev-devel@lists.sourceforge.net
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-embedded@vger.kernel.org
> Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Note you didn't Cc: me.

-- 
Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |