VI6_CMD
return !!(vsp1_read(vsp1, VI6_CMD(dlm->index)) & VI6_CMD_UPDHDR);
vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index),
value = vsp1_read(vsp1, VI6_CMD(0));
value = vsp1_read(vsp1, VI6_CMD(0));