VT8500_RTC_AS
alarm = readl(vt8500_rtc->regbase + VT8500_RTC_AS);
vt8500_rtc->regbase + VT8500_RTC_AS);
unsigned long tmp = readl(vt8500_rtc->regbase + VT8500_RTC_AS);
writel(tmp, vt8500_rtc->regbase + VT8500_RTC_AS);