proximity: vl53l0x: Prefer pre-initialized interrupt flags

On some boards interrupt type might be different than falling edge,
like hardcoded in driver. Leave interrupt flags as they were pre-configured
from the device-tree. If they're not provided, default to falling edge
interrupts.

Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
Link: https://lore.kernel.org/r/20220523175344.5845-3-markuss.broks@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/proximity/vl53l0x-i2c.c b/drivers/iio/proximity/vl53l0x-i2c.c
index a284b20..7272732 100644 (file)
--- a/drivers/iio/proximity/vl53l0x-i2c.c
+++ b/drivers/iio/proximity/vl53l0x-i2c.c
@@ -16,6 +16,7 @@
 
 #include <linux/delay.h>
 #include <linux/i2c.h>
+#include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 
@@ -57,11 +58,15 @@ static irqreturn_t vl53l0x_handle_irq(int irq, void *priv)
 static int vl53l0x_configure_irq(struct i2c_client *client,
                                 struct iio_dev *indio_dev)
 {
+       int irq_flags = irq_get_trigger_type(client->irq);
        struct vl53l0x_data *data = iio_priv(indio_dev);
        int ret;
 
+       if (!irq_flags)
+               irq_flags = IRQF_TRIGGER_FALLING;
+
        ret = devm_request_irq(&client->dev, client->irq, vl53l0x_handle_irq,
-                       IRQF_TRIGGER_FALLING, indio_dev->name, indio_dev);
+                       irq_flags, indio_dev->name, indio_dev);
        if (ret) {
                dev_err(&client->dev, "devm_request_irq error: %d\n", ret);
                return ret;