tree fc91c8559339207130b4004920e5f9f94492a53a
parent 32047ef7a5b70e8c610d51113ebdbef8167809b3
author Jason Ling <jasonling@google.com> 1597182633 -0700
committer Jason Ling <jasonling@google.com> 1601921213 +0000

hwmontemp: add labels attribute support

Adds Labels support to Hwmontemp. The behavior is meant to be identical
 to the behavior of Labels from PSUSensors.

Labels has the following behavior:
When discovering Name, Name1...NameX attributes from the configuration
and an associated temp is found
If tempX_label exists and its contents is in the Labels attribute then
create the sensor
If tempX_label does not exist but tempX is in the Labels attribute then
create the sensor
If Labels attribute is not present or is an empty list then create the
sensor

Tested:
Had a simple , publically available MAX6581 sensor that has
temp1, temp2, temp3, temp4, temp5
and tested with
Labels = ["temp1", "temp2", "temp3", "temp4", "temp5"]
       ├─/xyz/openbmc_project/sensors/temperature/max6581_1
        ├─/xyz/openbmc_project/sensors/temperature/max6581_2
        ├─/xyz/openbmc_project/sensors/temperature/max6581_3
        ├─/xyz/openbmc_project/sensors/temperature/max6581_4
        ├─/xyz/openbmc_project/sensors/temperature/max6581_5
Labels omitted
       ├─/xyz/openbmc_project/sensors/temperature/max6581_1
       ├─/xyz/openbmc_project/sensors/temperature/max6581_2
       ├─/xyz/openbmc_project/sensors/temperature/max6581_3
       ├─/xyz/openbmc_project/sensors/temperature/max6581_4
       ├─/xyz/openbmc_project/sensors/temperature/max6581_5

Labels containing temp2,temp5
Results:
       ├─/xyz/openbmc_project/sensors/temperature/max6581_2
       ├─/xyz/openbmc_project/sensors/temperature/max6581_5

And a similar test with a device that has temperature labels
                "Labels": [
                    "device_label_A",
                    "device_label_B",
                    "device_label_C"
                ],

        ├─/xyz/openbmc_project/sensors/temperature/device1_label_A
        ├─/xyz/openbmc_project/sensors/temperature/device1_label_B
        ├─/xyz/openbmc_project/sensors/temperature/device1_label_C

Signed-off-by: Jason Ling <jasonling@google.com>
Change-Id: I6cb9edb0c7ae68fe01663d4ee1be0070715e9f82