drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2583

   1 What:           /sys/bus/iio/devices/device[n]/in_illuminance0_calibrate
   2 KernelVersion:  2.6.37
   3 Contact:        linux-iio@vger.kernel.org
   4 Description:
   5                 This property causes an internal calibration of the als gain trim
   6                 value which is later used in calculating illuminance in lux.