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| author | Irina Tirdea <irina.tirdea@intel.com> | 2015-01-11 21:10:09 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-01-27 18:49:54 +0000 |
| commit | 5a1a932981415661827f7edd9e99943a2a3b7b67 (patch) | |
| tree | 3e08a87f80e1fa5dd60f543cd28d2244428182e5 /Documentation/ABI/testing/sysfs-bus-iio | |
| parent | cc3c9eecaed65b26ee0661e9e9491fd8d48e3907 (diff) | |
| download | lwn-5a1a932981415661827f7edd9e99943a2a3b7b67.tar.gz lwn-5a1a932981415661827f7edd9e99943a2a3b7b67.zip | |
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/testing/sysfs-bus-iio')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-iio | 10 |
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. |