rtc: pcf8523: 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/20230123200217.1236011-7-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c
index 92de99f11a7a5a64dcbe8aa97e8c8cde6c7ffc06..2e111cdb94f76cb74d7e96ef4fa4b336f91eaf56 100644 (file)
--- a/drivers/rtc/rtc-pcf8523.c
+++ b/drivers/rtc/rtc-pcf8523.c
@@ -445,13 +445,18 @@ static int pcf8523_probe(struct i2c_client *client)
        clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features);
 
        if (client->irq > 0) {
+               unsigned long irqflags = IRQF_TRIGGER_LOW;
+
+               if (dev_fwnode(&client->dev))
+                       irqflags = 0;
+
                err = regmap_write(pcf8523->regmap, PCF8523_TMR_CLKOUT_CTRL, 0x38);
                if (err < 0)
                        return err;
 
                err = devm_request_threaded_irq(&client->dev, client->irq,
                                                NULL, pcf8523_irq,
-                                               IRQF_SHARED | IRQF_ONESHOT | IRQF_TRIGGER_LOW,
+                                               IRQF_SHARED | IRQF_ONESHOT | irqflags,
                                                dev_name(&rtc->dev), pcf8523);
                if (err)
                        return err;