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authorIrina Tirdea <irina.tirdea@intel.com>2015-01-11 21:10:09 +0200
committerJonathan Cameron <jic23@kernel.org>2015-01-27 18:49:54 +0000
commit5a1a932981415661827f7edd9e99943a2a3b7b67 (patch)
tree3e08a87f80e1fa5dd60f543cd28d2244428182e5 /Documentation/ABI
parentcc3c9eecaed65b26ee0661e9e9491fd8d48e3907 (diff)
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 <irina.tirdea@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio10
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index c627a9a1cd56..80b5efb1cdbf 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_rot_from_north_true_tilt_comp_scale
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: linux-iio@vger.kernel.org
Description:
@@ -1164,3 +1165,12 @@ Contact: linux-iio@vger.kernel.org
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: linux-iio@vger.kernel.org
+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.