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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2012-11-16 14:00:45 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-11-16 14:00:45 +0100 |
| commit | 38c75d0f112d4e8bc3762cd8d0b6dbae3cf7e441 (patch) | |
| tree | 5f645844e1d92a3340439448e664e909f3105f72 /include | |
| parent | a2f3fde144db67f01fe9d5f22112fec3e7493d71 (diff) | |
| parent | 8a299c53bb7e12b6ed6e319e56b3b06d665452f7 (diff) | |
| download | barebox-38c75d0f112d4e8bc3762cd8d0b6dbae3cf7e441.tar.gz barebox-38c75d0f112d4e8bc3762cd8d0b6dbae3cf7e441.tar.xz | |
Merge branch 'for-next/gpio'
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/gpio.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 1997888bbb..c2e7a5d368 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -1,6 +1,17 @@ #ifndef __ASM_GENERIC_GPIO_H #define __ASM_GENERIC_GPIO_H +#define ARCH_NR_GPIOS 256 + +static inline int gpio_is_valid(int gpio) +{ + if (gpio < 0) + return 0; + if (gpio < ARCH_NR_GPIOS) + return 1; + return 0; +} + void gpio_set_value(unsigned gpio, int value); int gpio_get_value(unsigned gpio); int gpio_direction_output(unsigned gpio, int value); |