diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-iio-health-afe440x')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-iio-health-afe440x | 63 |
1 files changed, 25 insertions, 38 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x b/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x index 3740f253d406..6adba9058b22 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x +++ b/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x @@ -1,54 +1,41 @@ -What: /sys/bus/iio/devices/iio:deviceX/tia_resistanceY - /sys/bus/iio/devices/iio:deviceX/tia_capacitanceY -Date: December 2015 -KernelVersion: -Contact: Andrew F. Davis <afd@ti.com> -Description: - Get and set the resistance and the capacitance settings for the - Transimpedance Amplifier. Y is 1 for Rf1 and Cf1, Y is 2 for - Rf2 and Cf2 values. - -What: /sys/bus/iio/devices/iio:deviceX/tia_separate_en -Date: December 2015 -KernelVersion: -Contact: Andrew F. Davis <afd@ti.com> -Description: - Enable or disable separate settings for the TransImpedance - Amplifier above, when disabled both values are set by the - first channel. - -What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ledY_raw - /sys/bus/iio/devices/iio:deviceX/in_intensity_ledY_ambient_raw -Date: December 2015 +What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_raw +Date: May 2016 KernelVersion: Contact: Andrew F. Davis <afd@ti.com> Description: Get measured values from the ADC for these stages. Y is the - specific LED number. The values are expressed in 24-bit twos - complement. + specific stage number corresponding to datasheet stage names + as follows: + 1 -> LED2 + 2 -> ALED2/LED3 + 3 -> LED1 + 4 -> ALED1/LED4 + Note that channels 5 and 6 represent LED2-ALED2 and LED1-ALED1 + respectively which simply helper channels containing the + calculated difference in the value of stage 1 - 2 and 3 - 4. + The values are expressed in 24-bit twos complement. -What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ledY-ledY_ambient_raw -Date: December 2015 +What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_offset +Date: May 2016 KernelVersion: Contact: Andrew F. Davis <afd@ti.com> Description: - Get differential values from the ADC for these stages. Y is the - specific LED number. The values are expressed in 24-bit twos - complement for the specified LEDs. + Get and set the offset cancellation DAC setting for these + stages. The values are expressed in 5-bit sign-magnitude. -What: /sys/bus/iio/devices/iio:deviceX/out_current_ledY_offset - /sys/bus/iio/devices/iio:deviceX/out_current_ledY_ambient_offset -Date: December 2015 +What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_resistance +What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_capacitance +Date: May 2016 KernelVersion: Contact: Andrew F. Davis <afd@ti.com> Description: - Get and set the offset cancellation DAC setting for these - stages. The values are expressed in 5-bit sign-magnitude. + Get and set the resistance and the capacitance settings for the + Transimpedance Amplifier during the associated stage. -What: /sys/bus/iio/devices/iio:deviceX/out_current_ledY_raw -Date: December 2015 +What: /sys/bus/iio/devices/iio:deviceX/out_currentY_raw +Date: May 2016 KernelVersion: Contact: Andrew F. Davis <afd@ti.com> Description: - Get and set the LED current for the specified LED. Y is the - specific LED number. + Get and set the LED current for the specified LED active during + this stage. Y is the specific stage number. |