DSB_PMCTRL
intel_dsb_reg_write(dsb, DSB_PMCTRL(pipe, chained_dsb->id),
intel_dsb_reg_write(dsb, DSB_PMCTRL(pipe, chained_dsb->id), 0);
intel_de_write_fw(display, DSB_PMCTRL(pipe, dsb->id), 0);