usPerBytePresetOffset 8000 drivers/gpu/drm/amd/include/atombios.h   USHORT                     usPerBytePresetOffset;                          // offset of ATOM_INIT_REG_BLOCK structure for Per Byte Offset Preset Settings
usPerBytePresetOffset 6771 drivers/gpu/drm/radeon/atombios.h   USHORT                     usPerBytePresetOffset;                          // offset of ATOM_INIT_REG_BLOCK structure for Per Byte Offset Preset Settings