BTN_4 347 include/dt-bindings/input/linux-event-codes.h #define BTN_4 0x104 BTN_4 347 include/uapi/linux/input-event-codes.h #define BTN_4 0x104 BTN_4 347 scripts/dtc/include-prefixes/dt-bindings/input/linux-event-codes.h #define BTN_4 0x104