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+What: /sys/bus/iio/devices/device[n]/in_illuminance_calibrate
+KernelVersion: 2.6.37
+Contact: linux-iio@vger.kernel.org
+Description:
+ This property causes an internal calibration of the als gain trim
+ value which is later used in calculating illuminance in lux.
+
+What: /sys/bus/iio/devices/device[n]/in_illuminance_lux_table
+KernelVersion: 2.6.37
+Contact: linux-iio@vger.kernel.org
+Description:
+ This property gets/sets the table of coefficients
+ used in calculating illuminance in lux.
+
+What: /sys/bus/iio/devices/device[n]/in_illuminance_input_target
+KernelVersion: 2.6.37
+Contact: linux-iio@vger.kernel.org
+Description:
+ This property is the known externally illuminance (in lux).
+ It is used in the process of calibrating the device accuracy.