commit 445efe3393f42f1103c96c41f147a850cc06e871
author Yuan Li <yuan.li@linux.intel.com> Fri Jun 14 22:58:32 2019 +0800
committer Yuan Li <yuan.li@linux.intel.com> Wed Jun 19 22:48:06 2019 +0000
tree bf08faea7d55e2d4fa89572d8f34c178d8f712dc
parent be73e6a4d11f6c9f6f6887918404901cd87386b8

Support temp sensor on MCU which is available from I2C

Chassis MCU exposes register to report temperature for the peripheral board.
The MCU access is configurable as below:
        {
            "Bus": $bus,
            "Address": "0xAA",
            "Reg": "0xBB",
            "Class": "MCUTemp",
            "Name": "MCU Temp",
            "Thresholds": [
                xxx
            ]
            "Type": "MCUTempSensor"
        }

Tested:
The below interface was found under temperature sensor namespace:
          └─/xyz/openbmc_project/sensors/temperature/MCU_Temp

Run ipmitool sensor and check below from list:
MCU Temp     | 30.175      | degrees C  | cr    | na        | 0.000     | 5.000     | 110.000   | 115.000   | na

Change-Id: I8d54455ccc39ea4f60a5b4aee5c68be092d39a72
Signed-off-by: Yuan Li <yuan.li@linux.intel.com>

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8279694..af1a41c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,6 +17,7 @@
 option (DISABLE_HWMON_TEMP "Disable installing hwmon temp sensor" OFF)
 option (DISABLE_INTRUSION "Disable installing intrusion sensor" OFF)
 option (DISABLE_IPMB "Disable installing IPMB sensor" OFF)
+option (DISABLE_MCUTEMP "Disable installing MCU temperature sensor" OFF)
 option (DISABLE_PSU "Disable installing PSU sensor" OFF)
 
 include ("cmake/HunterGate.cmake")
@@ -42,6 +43,8 @@
 
 set (IPMB_SRC_FILES src/Utils.cpp src/Thresholds.cpp)
 
+set (MCUTEMP_SRC_FILES src/Utils.cpp src/Thresholds.cpp)
+
 set (PSU_SRC_FILES src/Utils.cpp src/PSUSensor.cpp src/Thresholds.cpp
      src/PwmSensor.cpp src/PSUEvent.cpp)
 
@@ -151,6 +154,11 @@
 add_dependencies (ipmbsensor sdbusplus-project)
 target_link_libraries (ipmbsensor ${SENSOR_LINK_LIBS})
 
+add_executable (mcutempsensor src/MCUTempSensor.cpp ${MCUTEMP_SRC_FILES})
+add_dependencies (mcutempsensor sdbusplus-project)
+target_link_libraries (mcutempsensor ${SENSOR_LINK_LIBS})
+target_link_libraries (mcutempsensor i2c)
+
 add_executable (psusensor src/PSUSensorMain.cpp ${PSU_SRC_FILES})
 add_dependencies (psusensor sdbusplus-project)
 target_link_libraries (psusensor ${SENSOR_LINK_LIBS})
@@ -163,6 +171,7 @@
     add_dependencies (hwmontempsensor ${EXTERNAL_PACKAGES})
     add_dependencies (intrusionsensor ${EXTERNAL_PACKAGES})
     add_dependencies (ipmbsensor ${EXTERNAL_PACKAGES})
+    add_dependencies (mcutempsensor ${EXTERNAL_PACKAGES})
     add_dependencies (psusensor ${EXTERNAL_PACKAGES})
 endif ()
 
@@ -223,6 +232,13 @@
                  DESTINATION ${SERVICE_FILE_INSTALL_DIR})
 endif ()
 
+if (NOT DISABLE_MCUTEMP)
+    install (TARGETS mcutempsensor DESTINATION bin)
+    install (FILES
+                 ${SERVICE_FILE_SRC_DIR}/xyz.openbmc_project.mcutempsensor.service
+                 DESTINATION ${SERVICE_FILE_INSTALL_DIR})
+endif ()
+
 if (NOT DISABLE_PSU)
     install (TARGETS psusensor DESTINATION bin)
     install (FILES