AMS_ISR_0
isr0 = readl(ams->base + AMS_ISR_0);
writel(isr0, ams->base + AMS_ISR_0);
status = readl(ams->base + AMS_ISR_0);
writel(unmask, ams->base + AMS_ISR_0);
writel(AMS_ISR0_ALARM_MASK, ams->base + AMS_ISR_0);