From 1d8c38c3d1b48eeb9cfaa42a8be13a1423569eb2 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Mon, 20 Feb 2012 19:49:30 +0800 Subject: 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 --- drivers/rtc/rtc-sa1100.c | 66 ++++++++---------------------------------------- 1 file changed, 11 insertions(+), 55 deletions(-) (limited to 'drivers/rtc/rtc-sa1100.c') diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index fef52c801a13..91d58bdc7f88 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c @@ -44,54 +44,6 @@ static const unsigned long RTC_FREQ = 1024; static DEFINE_SPINLOCK(sa1100_rtc_lock); -/* - * Calculate the next alarm time given the requested alarm time mask - * and the current time. - */ -static void rtc_next_alarm_time(struct rtc_time *next, struct rtc_time *now, - struct rtc_time *alrm) -{ - unsigned long next_time; - unsigned long now_time; - - next->tm_year = now->tm_year; - next->tm_mon = now->tm_mon; - next->tm_mday = now->tm_mday; - next->tm_hour = alrm->tm_hour; - next->tm_min = alrm->tm_min; - next->tm_sec = alrm->tm_sec; - - rtc_tm_to_time(now, &now_time); - rtc_tm_to_time(next, &next_time); - - if (next_time < now_time) { - /* Advance one day */ - next_time += 60 * 60 * 24; - rtc_time_to_tm(next_time, next); - } -} - -static int rtc_update_alarm(struct rtc_time *alrm) -{ - struct rtc_time alarm_tm, now_tm; - unsigned long now, time; - int ret; - - do { - now = RCNR; - rtc_time_to_tm(now, &now_tm); - rtc_next_alarm_time(&alarm_tm, &now_tm, alrm); - ret = rtc_tm_to_time(&alarm_tm, &time); - if (ret != 0) - break; - - RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL); - RTAR = time; - } while (now != RCNR); - - return ret; -} - static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id) { struct platform_device *pdev = to_platform_device(dev_id); @@ -219,16 +171,20 @@ static int sa1100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) { + unsigned long time; int ret; spin_lock_irq(&sa1100_rtc_lock); - ret = rtc_update_alarm(&alrm->time); - if (ret == 0) { - if (alrm->enabled) - RTSR |= RTSR_ALE; - else - RTSR &= ~RTSR_ALE; - } + ret = rtc_tm_to_time(&alrm->time, &time); + if (ret != 0) + goto out; + RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL); + RTAR = time; + if (alrm->enabled) + RTSR |= RTSR_ALE; + else + RTSR &= ~RTSR_ALE; +out: spin_unlock_irq(&sa1100_rtc_lock); return ret; -- cgit