A quaternion is composed of four components: a vector with x, y, z
coordinates and a w rotation. Added channel modifiers for exporting
these four components via user space.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
---
drivers/iio/industrialio-core.c | 4 ++++
include/linux/iio/types.h | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index f95c697..4ffaead 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -80,6 +80,10 @@ static const char * const iio_modifier_names[] = {
[IIO_MOD_LIGHT_RED] = "red",
[IIO_MOD_LIGHT_GREEN] = "green",
[IIO_MOD_LIGHT_BLUE] = "blue",
+ [IIO_MOD_QUATERNION_X] = "quat_x",
+ [IIO_MOD_QUATERNION_Y] = "quat_y",
+ [IIO_MOD_QUATERNION_Z] = "quat_z",
+ [IIO_MOD_QUATERNION_W] = "quat_w",
};
/* relies on pairs of these shared then separate */
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 88bf0f0..ac2345c 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -52,6 +52,10 @@ enum iio_modifier {
IIO_MOD_LIGHT_RED,
IIO_MOD_LIGHT_GREEN,
IIO_MOD_LIGHT_BLUE,
+ IIO_MOD_QUATERNION_X,
+ IIO_MOD_QUATERNION_Y,
+ IIO_MOD_QUATERNION_Z,
+ IIO_MOD_QUATERNION_W,
};
#define IIO_VAL_INT 1
--
1.8.3.1
--
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