[PATCH AUTOSEL 5.0 37/66] rtc: da9063: set uie_unsupported when relevant

Sasha Levin
2019-04-24T14:38:40Z

From: Alexandre Belloni <alexandre.belloni@bootlin.com>

[ Upstream commit 882c5e552ffd06856de42261460f46e18319d259 ]

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>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
---
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 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,
--
2.19.1