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yaml
---
r: 295617
b: refs/heads/master
c: 1d8c38c
h: refs/heads/master
i:
  295615: 133bbbe
v: v3
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Haojian Zhuang committed Feb 28, 2012
1 parent 6562e5e commit 3552c4f
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Showing 2 changed files with 12 additions and 56 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 61ee93cd18c7f99236c17829d8fe65f56e8dd392
refs/heads/master: 1d8c38c3d1b48eeb9cfaa42a8be13a1423569eb2
66 changes: 11 additions & 55 deletions trunk/drivers/rtc/rtc-sa1100.c
Original file line number Diff line number Diff line change
Expand Up @@ -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);
Expand Down Expand Up @@ -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;
Expand Down

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