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

[Linus Walleij]

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.

Yours,
Linus Walleij