rtc: sa1100: remove verification code of alarm
Since next alarm time is already calculated in rtc common interface, we needn't keep this logic in rtc-sa1100.c any more. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
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61ee93cd18
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1d8c38c3d1
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@ -44,54 +44,6 @@
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static const unsigned long RTC_FREQ = 1024;
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static DEFINE_SPINLOCK(sa1100_rtc_lock);
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/*
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* Calculate the next alarm time given the requested alarm time mask
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* and the current time.
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*/
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static void rtc_next_alarm_time(struct rtc_time *next, struct rtc_time *now,
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struct rtc_time *alrm)
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{
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unsigned long next_time;
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unsigned long now_time;
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next->tm_year = now->tm_year;
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next->tm_mon = now->tm_mon;
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next->tm_mday = now->tm_mday;
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next->tm_hour = alrm->tm_hour;
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next->tm_min = alrm->tm_min;
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next->tm_sec = alrm->tm_sec;
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rtc_tm_to_time(now, &now_time);
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rtc_tm_to_time(next, &next_time);
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if (next_time < now_time) {
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/* Advance one day */
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next_time += 60 * 60 * 24;
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rtc_time_to_tm(next_time, next);
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}
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}
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static int rtc_update_alarm(struct rtc_time *alrm)
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{
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struct rtc_time alarm_tm, now_tm;
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unsigned long now, time;
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int ret;
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do {
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now = RCNR;
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rtc_time_to_tm(now, &now_tm);
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rtc_next_alarm_time(&alarm_tm, &now_tm, alrm);
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ret = rtc_tm_to_time(&alarm_tm, &time);
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if (ret != 0)
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break;
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RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL);
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RTAR = time;
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} while (now != RCNR);
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return ret;
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}
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static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id)
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{
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struct platform_device *pdev = to_platform_device(dev_id);
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@ -219,16 +171,20 @@ static int sa1100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
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static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
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{
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unsigned long time;
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int ret;
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spin_lock_irq(&sa1100_rtc_lock);
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ret = rtc_update_alarm(&alrm->time);
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if (ret == 0) {
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ret = rtc_tm_to_time(&alrm->time, &time);
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if (ret != 0)
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goto out;
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RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL);
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RTAR = time;
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if (alrm->enabled)
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RTSR |= RTSR_ALE;
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else
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RTSR &= ~RTSR_ALE;
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}
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out:
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spin_unlock_irq(&sa1100_rtc_lock);
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return ret;
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