rtc: pcf8563: let the core handle the alarm resolution

Set RTC_FEATURE_ALARM_RES_MINUTE, so the core knows alarms have a
resolution of a minute. Also, the core will properly round down the alarm
instead of up.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220309162301.61679-16-alexandre.belloni@bootlin.com

diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index c8bddfb941290cfc89e1f8f3cdd8d10529f41446..530f06c810fa465df0fb67cdeb9049fe64e345a5 100644 (file)
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -330,19 +330,6 @@ static int pcf8563_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
        unsigned char buf[4];
        int err;
 
-       /* The alarm has no seconds, round up to nearest minute */
-       if (tm->time.tm_sec) {
-               time64_t alarm_time = rtc_tm_to_time64(&tm->time);
-
-               alarm_time += 60 - tm->time.tm_sec;
-               rtc_time64_to_tm(alarm_time, &tm->time);
-       }
-
-       dev_dbg(dev, "%s, min=%d hour=%d wday=%d mday=%d "
-               "enabled=%d pending=%d\n", __func__,
-               tm->time.tm_min, tm->time.tm_hour, tm->time.tm_wday,
-               tm->time.tm_mday, tm->enabled, tm->pending);
-
        buf[0] = bin2bcd(tm->time.tm_min);
        buf[1] = bin2bcd(tm->time.tm_hour);
        buf[2] = bin2bcd(tm->time.tm_mday);
@@ -566,6 +553,7 @@ static int pcf8563_probe(struct i2c_client *client,
        pcf8563->rtc->ops = &pcf8563_rtc_ops;
        /* the pcf8563 alarm only supports a minute accuracy */
        pcf8563->rtc->uie_unsupported = 1;
+       set_bit(RTC_FEATURE_ALARM_RES_MINUTE, pcf8563->rtc->features);
        pcf8563->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
        pcf8563->rtc->range_max = RTC_TIMESTAMP_END_2099;
        pcf8563->rtc->set_start_time = true;