Re: [PATCH 2/7] gpiolib: Support purely name based gpiod lookup in device trees
From: Maxime Ripard
Date: Tue Apr 22 2014 - 11:20:30 EST
Hi Linus,
On Tue, Apr 22, 2014 at 05:00:17PM +0200, Linus Walleij wrote:
> On Tue, Apr 15, 2014 at 8:41 AM, Chen-Yu Tsai <wens@xxxxxxxx> wrote:
>
> > This patch enables gpio-names based gpiod lookup in device tree usage,
> > which ignores the index passed to gpiod_get_index. If this fails, fall
> > back to the original function-index ("con_id"-gpios) based lookup scheme,
> > for backward compatibility and any drivers needing more than one GPIO
> > for any function.
> >
> > Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
>
> This looks a bit scary and I cannot claim to realize the entire semantic
> effect of this patch, but if it's the way to go then OK.
> Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
>
> Shall I just apply this to the GPIO tree or are you carrying it along with
> the other stuff?
This patch has a dependency on the first patch of this serie, since it
uses a binding that was documented there.
Maybe you'll want to wait for the ACK from the DT maintainers to merge
this one.
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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