BTN_THUMBR 398 include/dt-bindings/input/linux-event-codes.h #define BTN_THUMBR 0x13e BTN_THUMBR 398 include/uapi/linux/input-event-codes.h #define BTN_THUMBR 0x13e BTN_THUMBR 398 scripts/dtc/include-prefixes/dt-bindings/input/linux-event-codes.h #define BTN_THUMBR 0x13e