KEY_FN_B 544 include/dt-bindings/input/linux-event-codes.h #define KEY_FN_B 0x1e4 KEY_FN_B 544 include/uapi/linux/input-event-codes.h #define KEY_FN_B 0x1e4 KEY_FN_B 544 scripts/dtc/include-prefixes/dt-bindings/input/linux-event-codes.h #define KEY_FN_B 0x1e4