xref: /linux/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0)
1What:		/sys/bus/iio/devices/iio:deviceX/in_intensityY_raw
2Date:		May 2016
3KernelVersion:
4Contact:	Andrew F. Davis <afd@ti.com>
5Description:
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
24What:		/sys/bus/iio/devices/iio:deviceX/in_intensityY_offset
25Date:		May 2016
26KernelVersion:
27Contact:	Andrew F. Davis <afd@ti.com>
28Description:
29		Get and set the offset cancellation DAC setting for these
30		stages. The values are expressed in 5-bit sign-magnitude.
31
32What:		/sys/bus/iio/devices/iio:deviceX/in_intensityY_resistance
33What:		/sys/bus/iio/devices/iio:deviceX/in_intensityY_capacitance
34Date:		May 2016
35KernelVersion:
36Contact:	Andrew F. Davis <afd@ti.com>
37Description:
38		Get and set the resistance and the capacitance settings for the
39		Transimpedance Amplifier during the associated stage.
40