S_028800_Z_WRITE_ENABLE 1888 drivers/gpu/drm/radeon/evergreend.h #define   S_028800_Z_WRITE_ENABLE(x)                   (((x) & 0x1) << 2)
S_028800_Z_WRITE_ENABLE 2336 drivers/gpu/drm/radeon/r600d.h #define   S_028800_Z_WRITE_ENABLE(x)                   (((x) & 0x1) << 2)