diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index c19e16cd21dc80cab6c42bfb9a2671ce908231dd..23c964940312efc36f4dffac82292a141c1050b6 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -94,4 +94,13 @@ int gpio_get_value(unsigned gpio); */ int gpio_set_value(unsigned gpio, int value); +/** + * Request a gpio. This should be called before any of the other functions + * are used on this gpio. + * + * @param gp GPIO number + * @param label User label for this GPIO + * @return 0 if ok, -1 on error + */ +int gpio_request(unsigned gpio, const char *label); #endif /* _ASM_GENERIC_GPIO_H_ */