DSS_IRQ_VP_SYNC_LOST
vp_stat |= DSS_IRQ_VP_SYNC_LOST(hw_videoport);
if (vpstat & DSS_IRQ_VP_SYNC_LOST(hw_videoport))
tidss->irq_mask |= DSS_IRQ_VP_SYNC_LOST(tcrtc->hw_videoport);
if (irqstatus & DSS_IRQ_VP_SYNC_LOST(hw_videoport))