S_028800_Z_ENABLE 1885 drivers/gpu/drm/radeon/evergreend.h #define   S_028800_Z_ENABLE(x)                         (((x) & 0x1) << 1)
S_028800_Z_ENABLE 2333 drivers/gpu/drm/radeon/r600d.h #define   S_028800_Z_ENABLE(x)                         (((x) & 0x1) << 1)