iio: hmc5843: Add ABI documentation file for hmc5843

Add ABI file documenting hmc5843 non-standard attributes
meas_conf and meas_conf_available for bias current
configuration.

Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Cc: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/Documentation/ABI/testing/sysfs-bus-iio-magnetometer-hmc5843 b/Documentation/ABI/testing/sysfs-bus-iio-magnetometer-hmc5843
new file mode 100644 (file)
index 0000000..6275e9f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-magnetometer-hmc5843
@@ -0,0 +1,15 @@
+What:           /sys/bus/iio/devices/iio:deviceX/meas_conf
+What:           /sys/bus/iio/devices/iio:deviceX/meas_conf_available
+KernelVersion:  4.5
+Contact:        linux-iio@vger.kernel.org
+Description:
+                Current configuration and available configurations
+               for the bias current.
+               normal          - Normal measurement configurations (default)
+               positivebias    - Positive bias configuration
+               negativebias    - Negative bias configuration
+               disabled        - Only available on HMC5983. Disables magnetic
+                                 sensor and enables temperature sensor.
+               Note: The effect of this configuration may vary
+               according to the device. For exact documentation
+               check the device's datasheet.