xref: /OK3568_Linux_fs/kernel/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593SmuzhiyunWhat:		/sys/bus/iio/devices/iio:deviceX/in_intensityY_raw
2*4882a593SmuzhiyunDate:		May 2016
3*4882a593SmuzhiyunKernelVersion:
4*4882a593SmuzhiyunContact:	Andrew F. Davis <afd@ti.com>
5*4882a593SmuzhiyunDescription:
6*4882a593Smuzhiyun		Get measured values from the ADC for these stages. Y is the
7*4882a593Smuzhiyun		specific stage number corresponding to datasheet stage names
8*4882a593Smuzhiyun		as follows:
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun		== ==========
11*4882a593Smuzhiyun		1  LED2
12*4882a593Smuzhiyun		2  ALED2/LED3
13*4882a593Smuzhiyun		3  LED1
14*4882a593Smuzhiyun		4  ALED1/LED4
15*4882a593Smuzhiyun		== ==========
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun		Note that channels 5 and 6 represent LED2-ALED2 and LED1-ALED1
18*4882a593Smuzhiyun		respectively which simply helper channels containing the
19*4882a593Smuzhiyun		calculated difference in the value of stage 1 - 2 and 3 - 4.
20*4882a593Smuzhiyun		The values are expressed in 24-bit twos complement.
21*4882a593Smuzhiyun
22*4882a593SmuzhiyunWhat:		/sys/bus/iio/devices/iio:deviceX/in_intensityY_offset
23*4882a593SmuzhiyunDate:		May 2016
24*4882a593SmuzhiyunKernelVersion:
25*4882a593SmuzhiyunContact:	Andrew F. Davis <afd@ti.com>
26*4882a593SmuzhiyunDescription:
27*4882a593Smuzhiyun		Get and set the offset cancellation DAC setting for these
28*4882a593Smuzhiyun		stages. The values are expressed in 5-bit sign-magnitude.
29*4882a593Smuzhiyun
30*4882a593SmuzhiyunWhat:		/sys/bus/iio/devices/iio:deviceX/in_intensityY_resistance
31*4882a593SmuzhiyunWhat:		/sys/bus/iio/devices/iio:deviceX/in_intensityY_capacitance
32*4882a593SmuzhiyunDate:		May 2016
33*4882a593SmuzhiyunKernelVersion:
34*4882a593SmuzhiyunContact:	Andrew F. Davis <afd@ti.com>
35*4882a593SmuzhiyunDescription:
36*4882a593Smuzhiyun		Get and set the resistance and the capacitance settings for the
37*4882a593Smuzhiyun		Transimpedance Amplifier during the associated stage.
38*4882a593Smuzhiyun
39*4882a593SmuzhiyunWhat:		/sys/bus/iio/devices/iio:deviceX/out_currentY_raw
40*4882a593SmuzhiyunDate:		May 2016
41*4882a593SmuzhiyunKernelVersion:
42*4882a593SmuzhiyunContact:	Andrew F. Davis <afd@ti.com>
43*4882a593SmuzhiyunDescription:
44*4882a593Smuzhiyun		Get and set the LED current for the specified LED active during
45*4882a593Smuzhiyun		this stage. Y is the specific stage number.
46