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