[v3 01/13] iio: add modifiers for linear acceleration

Andrea Merello
2022-02-17T16:27:27Z

This patch is preparatory for adding the Bosh BNO055 IMU driver.
The said IMU can report raw accelerations (among x, y and z axis)
as well as the so called "linear accelerations" (again, among x,
y and z axis) which is basically the acceleration after subtracting
gravity.

This patch adds IIO_MOD_LINEAR_X, IIO_MOD_LINEAR_Y and IIO_MOD_LINEAR_Z
modifiers to te IIO core.

Signed-off-by: Andrea Merello <andrea.merello@iit.it>
---
drivers/iio/industrialio-core.c | 3 +++
include/uapi/linux/iio/types.h | 4 +++-
2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index e1ed44dec2ab..252dbe3444cc 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -134,6 +134,9 @@ static const char * const iio_modifier_names[] = {
[IIO_MOD_ETHANOL] = "ethanol",
[IIO_MOD_H2] = "h2",
[IIO_MOD_O2] = "o2",
+ [IIO_MOD_LINEAR_X] = "linear_x",
+ [IIO_MOD_LINEAR_Y] = "linear_y",
+ [IIO_MOD_LINEAR_Z] = "linear_z",
};

/* relies on pairs of these shared then separate */
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index 48c13147c0a8..387a1b5cd1a9 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -95,6 +95,9 @@ enum iio_modifier {
IIO_MOD_ETHANOL,
IIO_MOD_H2,
IIO_MOD_O2,
+ IIO_MOD_LINEAR_X,
+ IIO_MOD_LINEAR_Y,
+ IIO_MOD_LINEAR_Z,
};

enum iio_event_type {
@@ -114,4 +117,3 @@ enum iio_event_direction {
};

#endif /* _UAPI_IIO_TYPES_H_ */
-
--
2.17.1