POSITION_SAMPLE  1036 drivers/gpu/drm/radeon/evergreend.h #define		POSITION_SAMPLE					(1<<30)
POSITION_SAMPLE   461 drivers/gpu/drm/radeon/r600d.h #define		POSITION_SAMPLE					(1<<30)
POSITION_SAMPLE   540 drivers/gpu/drm/radeon/rv770d.h #define		POSITION_SAMPLE					(1<<30)