rtc: da9063: set uie_unsupported when relevant

The DA9063AD doesn't support alarms on any seconds and its granularity is
the minute. Set uie_unsupported in that case.

Reported-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c
index b4e054c64bad..69b54e5556c0 100644
--- a/drivers/rtc/rtc-da9063.c
+++ b/drivers/rtc/rtc-da9063.c
@@ -480,6 +480,13 @@ static int da9063_rtc_probe(struct platform_device *pdev)
         da9063_data_to_tm(data, &rtc->alarm_time, rtc);
         rtc->rtc_sync = false;
 
+        /*
+         * TODO: some models have alarms on a minute boundary but still support
+         * real hardware interrupts. Add this once the core supports it.
+         */
+        if (config->rtc_data_start != RTC_SEC)
+                rtc->rtc_dev->uie_unsupported = 1;
+
         irq_alarm = platform_get_irq_byname(pdev, "ALARM");
         ret = devm_request_threaded_irq(&pdev->dev, irq_alarm, NULL,
                                         da9063_alarm_event,