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Re: [PATCH v2 2/2] gpio: pxa: add pin control gpio direction and request

From Linus Walleij <linus.walleij@linaro.org>
Newsgroups linux.kernel
Subject Re: [PATCH v2 2/2] gpio: pxa: add pin control gpio direction and request
Date 2015-12-15 14:20 +0100
Message-ID <qFXGi-4AF-11@gated-at.bofh.it> (permalink)
References <qF1iV-8qA-3@gated-at.bofh.it> <qF1iV-8qA-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Sat, Dec 12, 2015 at 11:55 PM, Robert Jarzmik <robert.jarzmik@free.fr> wrote:

> If a pin control driver is available, use it to change the gpio
> direction. If not fallback to directly manipulating the gpio direction
> register.
>
> The reason to use the pin control driver first is that pin control in
> pxa2xx architecture implies changing the gpio direction, even for non
> gpio functions. In order to do it atomically, only one driver should
> control the gpio direction, and if a pin controller is available, it has
> to be him.
>
> There is a small catch : if CONFIG_PINCTRL is selected, then a pinctrl
> driver has to be probed. If not, gpio_request() will return
> -EPROBE_DEFER as pinctrl_request_gpio() returns it in that case.
>
> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
> ---
> Since v1: expand commit message to state the gpio possible breakage if
>           CONFIG_PINCTRL is selected and no pinctrl driver is built.

Patch applied.

Now you only need to send the incremental diff for patch 1/2.

Yours,
Linus Walleij
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[PATCH v2 2/2] gpio: pxa: add pin control gpio direction and request Robert Jarzmik <robert.jarzmik@free.fr> - 2015-12-13 00:00 +0100
  Re: [PATCH v2 2/2] gpio: pxa: add pin control gpio direction and request Linus Walleij <linus.walleij@linaro.org> - 2015-12-15 14:20 +0100

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