[v2 04/10] iio: add modifiers for linear acceleration

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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_ACCEL_LINEAR_X, IIO_MOD_ACCEL_LINEAR_Y and
IIO_MOD_ACCEL_LINEAR_Z modifiers to te IIO core.

Signed-off-by: Andrea Merello <andrea.merello@xxxxxx>
---
 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 2dbb37e09b8c..a79cb32207e4 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_ACCEL_LINEAR_X] = "linear_x",
+	[IIO_MOD_ACCEL_LINEAR_Y] = "linear_y",
+	[IIO_MOD_ACCEL_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..db00f7c45f48 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_ACCEL_LINEAR_X,
+	IIO_MOD_ACCEL_LINEAR_Y,
+	IIO_MOD_ACCEL_LINEAR_Z,
 };
 
 enum iio_event_type {
@@ -114,4 +117,3 @@ enum iio_event_direction {
 };
 
 #endif /* _UAPI_IIO_TYPES_H_ */
-
-- 
2.17.1




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