linux-kernel - Re: [PATCH 1/4 resend] [x86] Add generic GPIO support to x86

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Message-ID:  <20071018173828.159b15dd@ephemeral>
Date:	Thu, 18 Oct 2007 17:38:28 -0400
From:	Andres Salomon <dilinger@...ued.net>
To:	linux-kernel@...r.kernel.org
Subject:  Re: [PATCH 1/4 resend] [x86] Add generic GPIO support to x86

On Thu, 18 Oct 2007 15:51:24 +0200
Florian Fainelli <florian.fainelli@...ecomint.eu> wrote:

> This patch adds the generic GPIO support to the x86
> architecture. We do the same as for MIPS, we let
> the machine override the gpio callbacks and provide
> defaults one in mach-generic.
> 
[...]
> +
> +int gpio_request(unsigned gpio, const char *label);
> +void gpio_free(unsigned gpio);
> +int gpio_direction_input(unsigned gpio);
> +int gpio_direction_output(unsigned gpio, int value);
> +int gpio_get_value(unsigned gpio);
> +void gpio_set_value(unsigned gpio, int value);
> +int gpio_to_irq(unsigned gpio);
> +int irq_to_gpio(unsigned irq);

While I certainly would like to see a generic GPIO API, this one isn't
really useful for geode GPIOs.  It would be nice to have one that did
work for us as well.  Unfortunately, I haven't had the chance to give
much thought to this problem yet.


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