JZ_RTC_CTRL_AF
ctrl |= JZ_RTC_CTRL_1HZ | JZ_RTC_CTRL_AF;
alrm->pending = !!(ctrl & JZ_RTC_CTRL_AF);
if (ctrl & JZ_RTC_CTRL_AF)
jz4740_rtc_ctrl_set_bits(rtc, JZ_RTC_CTRL_1HZ | JZ_RTC_CTRL_AF, false);