C_028800_Z_WRITE_ENABLE 1890 drivers/gpu/drm/radeon/evergreend.h #define   C_028800_Z_WRITE_ENABLE                      0xFFFFFFFB
C_028800_Z_WRITE_ENABLE 2338 drivers/gpu/drm/radeon/r600d.h #define   C_028800_Z_WRITE_ENABLE                      0xFFFFFFFB