KEY_UNMUTE        643 include/dt-bindings/input/linux-event-codes.h #define KEY_UNMUTE			0x274
KEY_UNMUTE        643 include/uapi/linux/input-event-codes.h #define KEY_UNMUTE			0x274
KEY_UNMUTE        643 scripts/dtc/include-prefixes/dt-bindings/input/linux-event-codes.h #define KEY_UNMUTE			0x274