S626_P_IER
irqstatus = readl(dev->mmio + S626_P_IER);
writel(0, dev->mmio + S626_P_IER);
writel(irqstatus, dev->mmio + S626_P_IER);
writel(0, dev->mmio + S626_P_IER);
writel(S626_IRQ_GPIO3 | S626_IRQ_RPS1, dev->mmio + S626_P_IER);
writel(0, dev->mmio + S626_P_IER);
writel(0, dev->mmio + S626_P_IER);
writel(0, dev->mmio + S626_P_IER);