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gpio: allow setting ARCH_NR_GPIOS from Kconfig

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The ARM version of asm/gpio.h basically just contains the same definitions
as the gpiolib version, with the exception of ARCH_NR_GPIOS.

This adds the option for overriding the constant through Kconfig to
the architecture-independent header, so we can remove the ARM specific
file later.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Arnd Bergmann 2016-02-16 16:40:38 +01:00 committed by Linus Walleij
parent d7f7764e02
commit aa6aedb547
1 changed files with 4 additions and 0 deletions
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4
include/asm-generic/gpio.h
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@ -26,8 +26,12 @@
*/
#ifndef ARCH_NR_GPIOS
#if defined(CONFIG_ARCH_NR_GPIO) && CONFIG_ARCH_NR_GPIO > 0
#define ARCH_NR_GPIOS CONFIG_ARCH_NR_GPIO
#else
#define ARCH_NR_GPIOS 512
#endif
#endif
/*
* "valid" GPIO numbers are nonnegative and may be passed to