diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2016-02-15 15:49:08 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2016-03-14 17:08:20 +0100 |
| commit | 302c5608e9213c9c440b512628cb6f1626f61054 (patch) | |
| tree | ac7b67f0a0a318d93fbcf4ff61c0f9ecaa8edf9a /drivers/rtc/rtc-rx8025.c | |
| parent | rtc: rx8025: protect ctrl1 register update by rtc->ops_lock (diff) | |
| download | linux-302c5608e9213c9c440b512628cb6f1626f61054.tar.xz linux-302c5608e9213c9c440b512628cb6f1626f61054.zip | |
rtc: rx8025: round up to nearest minute for a minute accuracy alarm
The alarm for rx8025 only has a minute accuracy, so round up to nearest
minute when setting alarm. Without doing this, rtctest blocks one day
after setting alarm to 5 seconds later.
pcf8563 and hym8563 also have similar handling.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/rtc-rx8025.c')
| -rw-r--r-- | drivers/rtc/rtc-rx8025.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c index 259995281e0d..e117a8f6d025 100644 --- a/drivers/rtc/rtc-rx8025.c +++ b/drivers/rtc/rtc-rx8025.c @@ -344,7 +344,17 @@ static int rx8025_set_alarm(struct device *dev, struct rtc_wkalrm *t) if (client->irq <= 0) return -EINVAL; - /* Hardware alarm precision is 1 minute! */ + /* + * Hardware alarm precision is 1 minute! + * round up to nearest minute + */ + if (t->time.tm_sec) { + time64_t alarm_time = rtc_tm_to_time64(&t->time); + + alarm_time += 60 - t->time.tm_sec; + rtc_time64_to_tm(alarm_time, &t->time); + } + ald[0] = bin2bcd(t->time.tm_min); if (rx8025->ctrl1 & RX8025_BIT_CTRL1_1224) ald[1] = bin2bcd(t->time.tm_hour); |