rtc: m41t80: use IRQ flags obtained from fwnode

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.

Link: https://lore.kernel.org/r/20230123200217.1236011-4-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 494052dbd39ff3b8c657b500693e35868aa55ec6..c1963f7c424d7032bb13fccc9cf158c7f7e6f2d0 100644 (file)
--- 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");