GPIOF_DIR_OUT      16 include/linux/gpio.h #define GPIOF_OUT_INIT_LOW	(GPIOF_DIR_OUT | GPIOF_INIT_LOW)
GPIOF_DIR_OUT      17 include/linux/gpio.h #define GPIOF_OUT_INIT_HIGH	(GPIOF_DIR_OUT | GPIOF_INIT_HIGH)