tree f634c309e151a38ad59e73d8a362d08ee77ae34a
parent b6f89a0b0d1d94497d2735dfd753ca72c05187b2
author Joseph Fu <joseph.fu@quantatw.com> 1679711070 +0800
committer Zhikui Ren <zhikui.ren@intel.com> 1692314267 +0000

PSUSensor: add IIO device sensor

Support IIO device on D-bus via dbus-sensors, expose path to support
multi-channel labels.
Reference:
https://gerrit.openbmc.org/c/openbmc/dbus-sensors/+/47822

This patch is able to support the IIO device ADS1015
Use with this patch.
https://gerrit.openbmc.org/c/openbmc/entity-manager/+/58505

Json config
{
    "Address": "0x49",
    "Bus": 11,
    "Labels": [
        "in_voltage1",
        "in_voltage2"
    ],
    "Name": "vr_prnt_cem",
    "EntityId": "0x07",
    "EntityInstance": "0x17",
    "in_voltage1_Name": "vr_prnt_msas1",
    "in_voltage1_Scale": 1000,
    "in_voltage2_Name": "vr_prnt_msas2",
    "in_voltage2_Scale": 1000,
    "PowerState": "On",
    "Thresholds": [
        {
            "Direction": "greater than",
            "Label": "in_voltage1",
            "Name": "upper critical",
            "Severity": 1,
            "Value": 2.0
        },
        {
            "Direction": "less than",
            "Label": "in_voltage1",
            "Name": "lower critical",
            "Severity": 1,
            "Value": 0.0
        },
        {
            "Direction": "greater than",
            "Label": "in_voltage2",
            "Name": "upper critical",
            "Severity": 1,
            "Value": 2.0
        },
        {
            "Direction": "less than",
            "Label": "in_voltage2",
            "Name": "lower critical",
            "Severity": 1,
            "Value": 0.0
        }
    ],
    "in_voltage1_Max": 2.0,
    "in_voltage1_Min": 0.0,
    "in_voltage2_Max": 2.0,
    "in_voltage2_Min": 0.0,
    "PollRate": 1.0,
    "Type": "ADS1015"
}

Tested:
root@qbmc:~# busctl tree xyz.openbmc_project.EntityManager |grep msas
  |-/xyz/openbmc_project/inventory/system/board/Yertle/vr_prnt_msas1
  `-/xyz/openbmc_project/inventory/system/board/Yertle/vr_prnt_msas2

root@qbmc:~# busctl tree xyz.openbmc_project.PSUSensor
`-/xyz
  `-/xyz/openbmc_project
    |-/xyz/openbmc_project/control
    `-/xyz/openbmc_project/sensors
      `-/xyz/openbmc_project/sensors/voltage
        |-/xyz/openbmc_project/sensors/voltage/vr_prnt_msas1
        `-/xyz/openbmc_project/sensors/voltage/vr_prnt_msas2

root@qbmc:~# busctl get-property xyz.openbmc_project.PSUSensor \
/xyz/openbmc_project/sensors/voltage/vr_prnt_msas1 \
xyz.openbmc_project.Sensor.Value Value
d 1.72

Signed-off-by: Joseph Fu <joseph.fu@quantatw.com>
Change-Id: I584f5d79850921e702b8572fb6b38e9dcfc44d25