ucLetterBoxMode  4457 drivers/gpu/drm/amd/include/atombios.h   UCHAR              ucLetterBoxMode;
ucLetterBoxMode  4475 drivers/gpu/drm/amd/include/atombios.h   UCHAR              ucLetterBoxMode;
ucLetterBoxMode  3965 drivers/gpu/drm/radeon/atombios.h   UCHAR              ucLetterBoxMode;
ucLetterBoxMode  3983 drivers/gpu/drm/radeon/atombios.h   UCHAR              ucLetterBoxMode;