[v2 05/10] iio: add modifers for pitch, yaw, roll

[Andrea Merello <andrea.merello@gmail.com>]

This patch adds modifiers for reporting rotations as euler angles (i.e.
yaw, pitch and roll).

Signed-off-by: Andrea Merello <andrea.merello@iit.it>
---
 drivers/iio/industrialio-core.c | 5 ++++-
 include/uapi/linux/iio/types.h  | 3 +++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index a79cb32207e4..d2ebbfa8b9fc 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -136,7 +136,10 @@ static const char * const iio_modifier_names[] = {
 	[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"
+	[IIO_MOD_ACCEL_LINEAR_Z] = "linear_z",
+	[IIO_MOD_PITCH] = "pitch",
+	[IIO_MOD_YAW] = "yaw",
+	[IIO_MOD_ROLL] = "roll"
 };
 
 /* 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 db00f7c45f48..fc9909ca4f95 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -98,6 +98,9 @@ enum iio_modifier {
 	IIO_MOD_ACCEL_LINEAR_X,
 	IIO_MOD_ACCEL_LINEAR_Y,
 	IIO_MOD_ACCEL_LINEAR_Z,
+	IIO_MOD_PITCH,
+	IIO_MOD_YAW,
+	IIO_MOD_ROLL
 };
 
 enum iio_event_type {
-- 
2.17.1