Symbol: DRM_SCANOUTPOS_VALID
sys/dev/pci/drm/amd/amdgpu/amdgpu_mode.h
659
#define DRM_SCANOUTPOS_VALID (1 << 0)
sys/dev/pci/drm/radeon/radeon_mode.h
651
#define DRM_SCANOUTPOS_VALID (1 << 0)