BTN_TR2           393 include/dt-bindings/input/linux-event-codes.h #define BTN_TR2			0x139
BTN_TR2           393 include/uapi/linux/input-event-codes.h #define BTN_TR2			0x139
BTN_TR2           393 scripts/dtc/include-prefixes/dt-bindings/input/linux-event-codes.h #define BTN_TR2			0x139