KEY_FN_F4         529 include/dt-bindings/input/linux-event-codes.h #define KEY_FN_F4		0x1d5
KEY_FN_F4         529 include/uapi/linux/input-event-codes.h #define KEY_FN_F4		0x1d5
KEY_FN_F4         529 scripts/dtc/include-prefixes/dt-bindings/input/linux-event-codes.h #define KEY_FN_F4		0x1d5