IMGU_REG_IRQCTRL_CLEAR
writel(irq_status[i], base + IMGU_REG_IRQCTRL_CLEAR(i));
base + IMGU_REG_IRQCTRL_CLEAR(IMGU_IRQCTRL_MAIN));
writel(IMGU_IRQCTRL_IRQ_MASK, base + IMGU_REG_IRQCTRL_CLEAR(i));