LPC24XX_ILR
wkalrm->pending = !!(rtc_readl(rtc, LPC24XX_ILR) & LPC24XX_RTCCIF);
rtc_iir = rtc_readl(rtc, LPC24XX_ILR);
rtc_writel(rtc, LPC24XX_ILR, rtc_iir);
rtc_writel(rtc, LPC24XX_ILR, LPC24XX_RTCCIF | LPC24XX_RTCALF);