[PATCH v5 07/10] iio: accel: adxl345: introduce interrupt handling

[Lothar Rubusch]

Add the possibility to claim an interrupt. Init the state structure
with an interrupt line obtained from the DT. The adxl345 can use
two different interrupt lines for event handling. Only one is used.

Signed-off-by: Lothar Rubusch <l.rubusch@xxxxxxxxx>
---
 drivers/iio/accel/adxl345_core.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index 1d020b0d79c..e0a8b32239f 100644
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -11,6 +11,7 @@
 #include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/units.h>
+#include <linux/interrupt.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -18,8 +19,10 @@
 #include "adxl345.h"
 
 struct adxl345_state {
+	int irq;
 	const struct adxl345_chip_info *info;
 	struct regmap *regmap;
+	u8 intio;
 };
 
 #define ADXL345_CHANNEL(index, axis) {					\
@@ -212,6 +215,17 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap,
 
 	st = iio_priv(indio_dev);
 	st->regmap = regmap;
+
+	st->intio = -1;
+	st->irq = fwnode_irq_get_byname(dev_fwnode(dev), "INT1");
+	if (st->irq > 0)
+		st->intio = ADXL345_INT1;
+	else {
+		st->irq = fwnode_irq_get_byname(dev_fwnode(dev), "INT2");
+		if (st->irq > 0)
+			st->intio = ADXL345_INT2;
+	}
+
 	st->info = device_get_match_data(dev);
 	if (!st->info)
 		return -ENODEV;
-- 
2.39.2