Allow read/write access to sensor registers for use in unit-tests.

Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
---
 drivers/iio/accel/bma220_core.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/iio/accel/bma220_core.c b/drivers/iio/accel/bma220_core.c
index e60acd62cf96..41889cdcef76 100644
--- a/drivers/iio/accel/bma220_core.c
+++ b/drivers/iio/accel/bma220_core.c
@@ -433,10 +433,21 @@ static int bma220_read_avail(struct iio_dev *indio_dev,
 	}
 }

+static int bma220_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+			     unsigned int writeval, unsigned int *readval)
+{
+	struct bma220_data *data = iio_priv(indio_dev);
+
+	if (readval)
+		return regmap_read(data->regmap, reg, readval);
+	return regmap_write(data->regmap, reg, writeval);
+}
+
 static const struct iio_info bma220_info = {
 	.read_raw		= bma220_read_raw,
 	.write_raw		= bma220_write_raw,
 	.read_avail		= bma220_read_avail,
+	.debugfs_reg_access	= &bma220_reg_access,
 };

 static int bma220_reset(struct bma220_data *data, bool up)
--
2.49.1