iio: core: Introduce IIO_VELOCITY and IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z
Some devices export the current speed value of the user.
One of this devices is Freescale's MMA9553L
(http://www.freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf)
that computes the speed of the user based on the number of steps and
stride length.
Introduce a new channel type VELOCITY and a modifier for the magniture or
norm of the velocity vector, IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z.
Signed-off-by: Irina Tirdea <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index c627a9a..80b5efb1 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -295,6 +295,7 @@
What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
KernelVersion: 2.6.35
Contact: [email protected]
Description:
@@ -1164,3 +1165,12 @@
Description:
This attribute is used to read the number of steps taken by the user
since the last reboot while activated.
+
+What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
+What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
+KernelVersion: 3.19
+Contact: [email protected]
+Description:
+ This attribute is used to read the current speed value of the
+ user (which is the norm or magnitude of the velocity vector).
+ Units after application of scale are m/s.
