From: Stefan Popa <stefan.popa@xxxxxxxxxx>
[ Upstream commit d9a997bd4d762d5bd8cc548d762902f58b5e0a74 ]
We need to perform a reset a start up to make sure that the chip is in a
consistent state. This reset also disables all the interrupts which
should only be enabled together with the iio buffer. Not doing this, was
sometimes causing unwanted interrupts to trigger.
Signed-off-by: Stefan Popa <stefan.popa@xxxxxxxxxx>
Fixes: f4f55ce38e5f ("iio:adxl372: Add FIFO and interrupts support")
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iio/accel/adxl372.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c
index fbad4b45fe42d..67b8817995c04 100644
--- a/drivers/iio/accel/adxl372.c
+++ b/drivers/iio/accel/adxl372.c
@@ -575,6 +575,14 @@ static int adxl372_setup(struct adxl372_state *st)
return -ENODEV;
}
+ /*
+ * Perform a software reset to make sure the device is in a consistent
+ * state after start up.
+ */
+ ret = regmap_write(st->regmap, ADXL372_RESET, ADXL372_RESET_CODE);
+ if (ret < 0)
+ return ret;
+
ret = adxl372_set_op_mode(st, ADXL372_STANDBY);
if (ret < 0)
return ret;
--
2.20.1
