DSB_CTRL
return intel_de_read_fw(display, DSB_CTRL(pipe, dsb_id)) & DSB_STATUS_BUSY;
intel_dsb_reg_write_masked(dsb, DSB_CTRL(pipe, dsb->id),
intel_dsb_reg_write_masked(dsb, DSB_CTRL(pipe, dsb->id),
intel_dsb_reg_write(dsb, DSB_CTRL(pipe, chained_dsb->id),
intel_de_write_fw(display, DSB_CTRL(pipe, dsb->id),
intel_de_write_fw(display, DSB_CTRL(pipe, dsb->id),
intel_de_write_fw(display, DSB_CTRL(pipe, dsb->id), 0);