Documentation/ABI/testing/sysfs-bus-iio-health-afe440x

   1 What:           /sys/bus/iio/devices/iio:deviceX/in_intensityY_raw
   2 Date:           May 2016
   3 KernelVersion:
   4 Contact:        Andrew F. Davis <afd@ti.com>
   5 Description:
   6                 Get measured values from the ADC for these stages. Y is the
   7                 specific stage number corresponding to datasheet stage names
   8                 as follows:
   9
  10                 == ==========
  11                 1  LED2
  12                 2  ALED2/LED3
  13                 3  LED1
  14                 4  ALED1/LED4
  15                 == ==========
  16
  17                 Note that channels 5 and 6 represent LED2-ALED2 and LED1-ALED1
  18                 respectively which simply helper channels containing the
  19                 calculated difference in the value of stage 1 - 2 and 3 - 4.
  20                 The values are expressed in 24-bit twos complement.
  21                 The LED current for the stage is controlled via
  22                 out_currentY_raw.
  23
  24 What:           /sys/bus/iio/devices/iio:deviceX/in_intensityY_offset
  25 Date:           May 2016
  26 KernelVersion:
  27 Contact:        Andrew F. Davis <afd@ti.com>
  28 Description:
  29                 Get and set the offset cancellation DAC setting for these
  30                 stages. The values are expressed in 5-bit sign-magnitude.
  31
  32 What:           /sys/bus/iio/devices/iio:deviceX/in_intensityY_resistance
  33 What:           /sys/bus/iio/devices/iio:deviceX/in_intensityY_capacitance
  34 Date:           May 2016
  35 KernelVersion:
  36 Contact:        Andrew F. Davis <afd@ti.com>
  37 Description:
  38                 Get and set the resistance and the capacitance settings for the
  39                 Transimpedance Amplifier during the associated stage.