From ed17a2bcbb75505bb979e3e8ecb6c5fb2518bf3b Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel.holland@sifive.com>
Date: Mon, 17 Jul 2023 12:09:37 -0700
Subject: [PATCH] rtc: da9063: Mark the alarm IRQ as a wake IRQ

This keeps the IRQ enabled during system suspend, if the RTC's wakeup
source is enabled. Since the IRQ is not required to wake from shutdown,
continue to add the wakeup source even if registering the wakeirq fails.
See commit 029d3a6f2f3c ("rtc: da9063: add as wakeup source").

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Link: https://lore.kernel.org/r/20230717190937.1301509-1-samuel.holland@sifive.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.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 ee2efb496174..2f5d60622564 100644
--- a/drivers/rtc/rtc-da9063.c
+++ b/drivers/rtc/rtc-da9063.c
@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
+#include <linux/pm_wakeirq.h>
 #include <linux/regmap.h>
 #include <linux/rtc.h>
 #include <linux/slab.h>
@@ -496,6 +497,12 @@ static int da9063_rtc_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "Failed to request ALARM IRQ %d: %d\n",
 			irq_alarm, ret);
 
+	ret = dev_pm_set_wake_irq(&pdev->dev, irq_alarm);
+	if (ret)
+		dev_warn(&pdev->dev,
+			 "Failed to set IRQ %d as a wake IRQ: %d\n",
+			 irq_alarm, ret);
+
 	device_init_wakeup(&pdev->dev, true);
 
 	return devm_rtc_register_device(rtc->rtc_dev);