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authorAkinobu Mita <akinobu.mita@gmail.com>2016-02-15 23:49:08 +0900
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-03-14 17:08:20 +0100
commit302c5608e9213c9c440b512628cb6f1626f61054 (patch)
treeac7b67f0a0a318d93fbcf4ff61c0f9ecaa8edf9a /drivers/rtc/rtc-rx8025.c
parent9dbe3852964166fdf3ac4aff4cb67311dfa243bc (diff)
downloadlinux-302c5608e9213c9c440b512628cb6f1626f61054.tar.bz2
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.c12
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);