ABS_MT_FIRST 31 include/linux/input/mt.h int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; ABS_MT_FIRST 59 include/linux/input/mt.h slot->abs[code - ABS_MT_FIRST] = value; ABS_MT_FIRST 65 include/linux/input/mt.h return slot->abs[code - ABS_MT_FIRST]; ABS_MT_FIRST 95 include/linux/input/mt.h return axis >= ABS_MT_FIRST && axis <= ABS_MT_LAST;