[PATCH 1/9] ARM: dt: add header to define GPIO flags

[Hiroshi Doyu]

Stephen Warren <swarren at wwwdotorg.org> wrote @ Wed, 13 Feb 2013 22:33:10 +0100:

> From: Stephen Warren <swarren at nvidia.com>
> 
> Many GPIO device tree bindings use the same flags. Create a header to
> define those.
> 
> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> ---
>  arch/arm/boot/dts/gpio.h |   10 ++++++++++
>  1 file changed, 10 insertions(+)
>  create mode 100644 arch/arm/boot/dts/gpio.h
> 
> diff --git a/arch/arm/boot/dts/gpio.h b/arch/arm/boot/dts/gpio.h
> new file mode 100644
> index 0000000..4c9da69
> --- /dev/null
> +++ b/arch/arm/boot/dts/gpio.h
> @@ -0,0 +1,10 @@
> +/*
> + * This header provides constants for most GPIO bindings.
> + *
> + * Most GPIO bindings include a flags cell as part of the GPIO specifier.
> + * In most cases, the format of the flags cell uses the standard values
> + * defined in this header.
> + */

#ifdef _DTS_GPIO_H
#define _DTS_GPIO_H

> +
> +#define GPIO_ACTIVE_HIGH 0
> +#define GPIO_ACTIVE_LOW 1

#endif /* _DTS_GPIO_H */

To avoid multple inclusion problems, do we want the above
ifdef/define/endif for other DT header files as well?