[PATCH 1/2] Documentation/gpio.txt: Explain expected pinctrl interaction

[Grant Likely]

On Tue, 21 Feb 2012 11:46:03 +0100, Linus Walleij <linus.walleij at linaro.org> wrote:
> On Mon, Feb 20, 2012 at 7:27 AM, Stephen Warren <swarren at nvidia.com> wrote:
> 
> > Update gpio.txt based on recent discussions regarding interaction with the
> > pinctrl subsystem.
> >
> > Previously, gpio_request() was described as explicitly not performing any
> > required mux setup operations etc.
> >
> > Now, gpio_request() is explicitly as explicitly performing any required mux
> > setup operations where possible. In the case it isn't, platform code is
> > required to have set up any required muxing or other configuration prior to
> > gpio_request() being called, in order to maintain the same semantics.
> >
> > This is achieved by gpiolib drivers calling e.g. pinctrl_request_gpio() in
> > their .request() operation.
> >
> > Signed-off-by: Stephen Warren <swarren at nvidia.com>
> 
> Acked-by: Linus Walleij <linus.walleij at linaro.org>
> 
> Grant can you take this one? I'd prefer for you to have a look at
> it as well.

I've taken this one, but left the 2nd for Olof.

g.