linux-kernel - [PATCH 04/12] rtc: m41t80: use IRQ flags obtained from fwnode

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Date:   Mon, 23 Jan 2023 21:02:09 +0100
From:   alexandre.belloni@...tlin.com
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 04/12] rtc: m41t80: use IRQ flags obtained from fwnode

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

Allow the IRQ type to be passed from the device tree if available as there
may be components changing the trigger type of the interrupt between the
RTC and the IRQ controller.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/rtc/rtc-m41t80.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 494052dbd39f..c1963f7c424d 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -914,9 +914,14 @@ static int m41t80_probe(struct i2c_client *client)
 					      "wakeup-source");
 #endif
 	if (client->irq > 0) {
+		unsigned long irqflags = IRQF_TRIGGER_LOW;
+
+		if (dev_fwnode(&client->dev))
+			irqflags = 0;
+
 		rc = devm_request_threaded_irq(&client->dev, client->irq,
 					       NULL, m41t80_handle_irq,
-					       IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+					       irqflags | IRQF_ONESHOT,
 					       "m41t80", client);
 		if (rc) {
 			dev_warn(&client->dev, "unable to request IRQ, alarms disabled\n");
-- 
2.39.1