meta-ampere: mtmitchell: handle the fan fault

The phosphor-led-manager will monitors the
`xyz.openbmc_project.State.Decorator.OperationalStatus` interface
of the Inventory D-Bus object, and check whether the Inventory
D-Bus object is associated with the LED group D-Bus object, and
then update the Asserted property of the LedManager.
This adds the fan_fault led group to associations.json file to
monitors the FANs and turns on the fault led when the FANs fails.

1. Unplug the fan and verify that both `Fan Fault Led` and
   `Fault Led` are turned on.
2. Plug the fan and verify that both `Fan Fault Led` and `Fault Led`
   are turned off.

Signed-off-by: Hieu Huynh <hieuh@os.amperecomputing.com>
Change-Id: I2adc0fb8846c4690f8eaac3bb80e6dbf25077be3

3 files changed, 257 insertions, 0 deletions

diff --git a/meta-ampere/meta-mitchell/recipes-phosphor/inventory/phosphor-inventory-manager/associations.json b/meta-ampere/meta-mitchell/recipes-phosphor/inventory/phosphor-inventory-manager/associations.json
new file mode 100644
index 0000000000..1a55553ded
--- /dev/null
+++ b/meta-ampere/meta-mitchell/recipes-phosphor/inventory/phosphor-inventory-manager/associations.json
@@ -0,0 +1,230 @@
+[
+    {
+        "path": "system/board/Mt_Mitchell_Motherboard/FAN0",
+        "endpoints":
+        [
+            {
+                "types":
+                {
+                    "rType": "inventory",
+                    "fType": "sensors"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN0_F",
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN0_R"
+                ]
+            },
+            {
+                "types": {
+                    "rType": "fault_identified_by",
+                    "fType": "fault_identifying"
+                },
+                "paths": [
+                    "/xyz/openbmc_project/led/groups/fan_fault"
+                ]
+            },
+            {
+                "types":
+                {
+                    "rType": "cooled_by",
+                    "fType": "cooling"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/inventory/system/chassis"
+                ]
+            }
+        ]
+    },
+    {
+        "path": "system/board/Mt_Mitchell_Motherboard/FAN1",
+        "endpoints":
+        [
+            {
+                "types":
+                {
+                    "rType": "inventory",
+                    "fType": "sensors"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN1_F",
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN1_R"
+                ]
+            },
+            {
+                "types": {
+                    "rType": "fault_identified_by",
+                    "fType": "fault_identifying"
+                },
+                "paths": [
+                    "/xyz/openbmc_project/led/groups/fan_fault"
+                ]
+            },
+            {
+                "types":
+                {
+                    "rType": "cooled_by",
+                    "fType": "cooling"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/inventory/system/chassis"
+                ]
+            }
+        ]
+    },
+    {
+        "path": "system/board/Mt_Mitchell_Motherboard/FAN2",
+        "endpoints":
+        [
+            {
+                "types":
+                {
+                    "rType": "inventory",
+                    "fType": "sensors"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN2_F",
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN2_R"
+                ]
+            },
+            {
+                "types": {
+                    "rType": "fault_identified_by",
+                    "fType": "fault_identifying"
+                },
+                "paths": [
+                    "/xyz/openbmc_project/led/groups/fan_fault"
+                ]
+            },
+            {
+                "types":
+                {
+                    "rType": "cooled_by",
+                    "fType": "cooling"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/inventory/system/chassis"
+                ]
+            }
+        ]
+    },
+    {
+        "path": "system/board/Mt_Mitchell_Motherboard/FAN3",
+        "endpoints":
+        [
+            {
+                "types":
+                {
+                    "rType": "inventory",
+                    "fType": "sensors"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN3_F",
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN3_R"
+                ]
+            },
+            {
+                "types": {
+                    "rType": "fault_identified_by",
+                    "fType": "fault_identifying"
+                },
+                "paths": [
+                    "/xyz/openbmc_project/led/groups/fan_fault"
+                ]
+            },
+            {
+                "types":
+                {
+                    "rType": "cooled_by",
+                    "fType": "cooling"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/inventory/system/chassis"
+                ]
+            }
+        ]
+    },
+    {
+        "path": "system/board/Mt_Mitchell_Motherboard/FAN4",
+        "endpoints":
+        [
+            {
+                "types":
+                {
+                    "rType": "inventory",
+                    "fType": "sensors"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN4_F",
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN4_R"
+                ]
+            },
+            {
+                "types": {
+                    "rType": "fault_identified_by",
+                    "fType": "fault_identifying"
+                },
+                "paths": [
+                    "/xyz/openbmc_project/led/groups/fan_fault"
+                ]
+            },
+            {
+                "types":
+                {
+                    "rType": "cooled_by",
+                    "fType": "cooling"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/inventory/system/chassis"
+                ]
+            }
+        ]
+    },
+    {
+        "path": "system/board/Mt_Mitchell_Motherboard/FAN5",
+        "endpoints":
+        [
+            {
+                "types":
+                {
+                    "rType": "inventory",
+                    "fType": "sensors"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN5_F",
+                    "/xyz/openbmc_project/sensors/fan_tach/FAN5_R"
+                ]
+            },
+            {
+                "types": {
+                    "rType": "fault_identified_by",
+                    "fType": "fault_identifying"
+                },
+                "paths": [
+                    "/xyz/openbmc_project/led/groups/fan_fault"
+                ]
+            },
+            {
+                "types":
+                {
+                    "rType": "cooled_by",
+                    "fType": "cooling"
+                },
+                "paths":
+                [
+                    "/xyz/openbmc_project/inventory/system/chassis"
+                ]
+            }
+        ]
+    }
+]
\ No newline at end of file
diff --git a/meta-ampere/meta-mitchell/recipes-phosphor/inventory/phosphor-inventory-manager_%.bbappend b/meta-ampere/meta-mitchell/recipes-phosphor/inventory/phosphor-inventory-manager_%.bbappend
new file mode 100644
index 0000000000..768c66758f
--- /dev/null
+++ b/meta-ampere/meta-mitchell/recipes-phosphor/inventory/phosphor-inventory-manager_%.bbappend
@@ -0,0 +1,10 @@
+DEPENDS:append = " inventory-cleanup"
+
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+PACKAGECONFIG:append = " associations"
+SRC_URI:append = " file://associations.json"
+
+do_install:append() {
+    install -d ${D}${base_datadir}
+    install -m 0755 ${WORKDIR}/associations.json ${D}${base_datadir}
+}
diff --git a/meta-ampere/meta-mitchell/recipes-phosphor/leds/phosphor-led-manager/led-group-config.json b/meta-ampere/meta-mitchell/recipes-phosphor/leds/phosphor-led-manager/led-group-config.json
index 84b78bf42c..ef35e053bb 100644
--- a/meta-ampere/meta-mitchell/recipes-phosphor/leds/phosphor-led-manager/led-group-config.json
+++ b/meta-ampere/meta-mitchell/recipes-phosphor/leds/phosphor-led-manager/led-group-config.json
@@ -43,6 +43,23 @@
 					"Period": 1000
 				}
 			]
+		},
+		{
+			"group": "fan_fault",
+			"members": [
+				{
+					"Name": "fan_fault",
+					"Action": "On",
+					"DutyOn": 50,
+					"Period": 1000
+				},
+				{
+					"Name": "fault",
+					"Action": "On",
+					"DutyOn": 50,
+					"Period": 1000
+				}
+			]
 		}
 	]
 }