rtc: mpc5121: 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/20220309162301.61679-4-alexandre.belloni@bootlin.com

diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c
index bb2ea9b..6bd9779 100644 (file)
--- a/drivers/rtc/rtc-mpc5121.c
+++ b/drivers/rtc/rtc-mpc5121.c
@@ -210,20 +210,6 @@ static int mpc5121_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
        struct mpc5121_rtc_data *rtc = dev_get_drvdata(dev);
        struct mpc5121_rtc_regs __iomem *regs = rtc->regs;
 
-       /*
-        * the alarm has no seconds so deal with it
-        */
-       if (alarm->time.tm_sec) {
-               alarm->time.tm_sec = 0;
-               alarm->time.tm_min++;
-               if (alarm->time.tm_min >= 60) {
-                       alarm->time.tm_min = 0;
-                       alarm->time.tm_hour++;
-                       if (alarm->time.tm_hour >= 24)
-                               alarm->time.tm_hour = 0;
-               }
-       }
-
        alarm->time.tm_mday = -1;
        alarm->time.tm_mon = -1;
        alarm->time.tm_year = -1;
@@ -349,6 +335,7 @@ static int mpc5121_rtc_probe(struct platform_device *op)
        }
 
        rtc->rtc->ops = &mpc5200_rtc_ops;
+       set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->rtc->features);
        rtc->rtc->uie_unsupported = 1;
        rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_0000;
        rtc->rtc->range_max = 65733206399ULL; /* 4052-12-31 23:59:59 */