iio: core: Introduce DISTANCE channel type
Some devices export an estimation of the distance the user has covered
since the last reset.
One of this devices is Freescale's MMA9553L
(http://www.freescale.com/files/sensors/doc/ref_manual/MMA9553LSWRM.pdf)
that computes the distance based on the stride length and step rate.
Introduce a new channel type DISTANCE to export these values.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 3311886..c627a9a 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -283,6 +283,7 @@
What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale
What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale
What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
@@ -1059,6 +1060,15 @@
device (e.g.: human activity sensors report energy burnt by the
user). Units after application of scale are Joules.
+What: /sys/.../iio:deviceX/in_distance_input
+What: /sys/.../iio:deviceX/in_distance_raw
+KernelVersion: 3.20
+Contact: linux-iio@vger.kernel.org
+Description:
+ This attribute is used to read the distance covered by the user
+ since the last reboot while activated. Units after application
+ of scale are meters.
+
What: /sys/bus/iio/devices/iio:deviceX/store_eeprom
KernelVersion: 3.4.0
Contact: linux-iio@vger.kernel.org
