Commit 1d8c38c3 authored by Haojian Zhuang's avatar Haojian Zhuang
Browse files

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: default avatarHaojian Zhuang <haojian.zhuang@marvell.com>
parent 61ee93cd

drivers/rtc/rtc-sa1100.c

+11 −55
Original line number Diff line number Diff line
@@ -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) {

	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;