kernel/drivers/staging/iio/Documentation/light/sysfs-bus-iio-light-tsl2x7x

   1 What:           /sys/bus/iio/devices/device[n]/in_illuminance0_calibrate
   2 KernelVersion:  3.3-rc1
   3 Contact:        linux-iio@vger.kernel.org
   4 Description:
   5                 Causes an internal calibration of the als gain trim
   6                 value which is later used in calculating illuminance in lux.
   7
   8 What:           /sys/bus/iio/devices/device[n]/in_proximity0_calibrate
   9 KernelVersion:  3.3-rc1
  10 Contact:        linux-iio@vger.kernel.org
  11 Description:
  12                 Causes a recalculation and adjustment to the
  13                 proximity_thresh_rising_value.