linux-kernel - [PATCH] rtc: da9063: set uie

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Message-Id: <20190402102636.13331-1-alexandre.belloni@bootlin.com>
Date:   Tue,  2 Apr 2019 12:26:36 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     linux-rtc@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Steve Twiss <stwiss.opensource@...semi.com>
Subject: [PATCH] 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@...g-engineering.com>
Reported-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
Acked-by: Steve Twiss <stwiss.opensource@...semi.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/rtc/rtc-da9063.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c
index 1b792bcea3c7..15908d51b1cb 100644
--- a/drivers/rtc/rtc-da9063.c
+++ b/drivers/rtc/rtc-da9063.c
@@ -475,6 +475,13 @@ 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,
-- 
2.20.1