@@ -361,6 +361,14 @@ static int pcf8563_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
struct i2c_client *client = to_i2c_client(dev);
unsigned char buf[4];
int err;
+ unsigned long alarm_time;
+
+ /* The alarm has no seconds, round up to nearest minute */
+ if (tm->time.tm_sec) {
+ rtc_tm_to_time(&tm->time, &alarm_time);
+ alarm_time += 60-tm->time.tm_sec;
+ rtc_time_to_tm(alarm_time, &tm->time);
+ }
dev_dbg(dev, "%s, min=%d hour=%d wday=%d mday=%d "
"enabled=%d pending=%d\n", __func__,
@@ -435,6 +443,9 @@ static int pcf8563_probe(struct i2c_client *client,
}
+ /* the pcf8563 alarm only supports a minute accuracy */
+ pcf8563->rtc->uie_unsupported = 1;
+
return 0;
}
To guarantee that a set alarm occurs in the future, the set alarm time is rounded up to the nearest minute. Also we cannot handle UIE as it requires second precision. Signed-off-by: Jan Kardell <jan.kardell@telliq.com> --- drivers/rtc/rtc-pcf8563.c | 11 +++++++++++ 1 file changed, 11 insertions(+)