#ifndef _FSADC_H #define _FSADC_H #define FSADC_MAGIC 'f' union chan_val { unsigned int chan; unsigned int val; }; #define FSADC_GET_VAL _IOWR(FSADC_MAGIC, 0, union chan_val) #define AIN0 0 #define AIN1 1 #define AIN2 2 #define AIN3 3 #endif