dispc_read_irqstatus
while (!(dispc_read_irqstatus(dispc) & framedone_irq)) {
u32 dispc_read_irqstatus(struct dispc_device *dispc);
irqstatus = dispc_read_irqstatus(priv->dispc);
dispc_read_irqstatus(priv->dispc); /* flush posted write */
irqstatus = dispc_read_irqstatus();
dispc_read_irqstatus();
dispc_clear_irqstatus(dispc_read_irqstatus());
EXPORT_SYMBOL(dispc_read_irqstatus);
u32 dispc_read_irqstatus(void);