commit 49a8ccd6713364e9e79ae6334c168aafb69991e0
author James Feist <james.feist@linux.intel.com> Wed Sep 16 16:09:52 2020 -0700
committer James Feist <james.feist@linux.intel.com> Tue Sep 29 23:10:11 2020 +0000
tree 9eb06b6aec3f46c89e152bdf762317d506556e30
parent f57836bdc697ebf836c041ed990c617579aa25cf

Add LED Support to Fan Sensor

This allows the fan sensor to trip an LED when a critical
threshold is crossed.

Tested: Saw LED d-bus object in Group manager get set
using sensor override

Change-Id: Iab5a69ded20de6e3ac99e9ac687c60605d5763d1
Signed-off-by: James Feist <james.feist@linux.intel.com>

include/TachSensor.hpp

diff --git a/include/TachSensor.hpp b/include/TachSensor.hpp
index af39d0c..1e5347f 100644
--- a/include/TachSensor.hpp
+++ b/include/TachSensor.hpp
@@ -73,7 +73,8 @@
                std::vector<thresholds::Threshold>&& thresholds,
                const std::string& sensorConfiguration,
                const std::pair<size_t, size_t>& limits,
-               const PowerState& powerState = PowerState::on);
+               const PowerState& powerState,
+               const std::optional<std::string>& led);
     ~TachSensor();
 
   private:
@@ -86,6 +87,8 @@
     boost::asio::deadline_timer waitTimer;
     boost::asio::streambuf readBuf;
     std::string path;
+    std::optional<std::string> led;
+    bool ledState = false;
     size_t errCount;
     void setupRead(void);
     void handleResponse(const boost::system::error_code& err);

include/Utils.hpp

diff --git a/include/Utils.hpp b/include/Utils.hpp
index 2c6ce9e..7f529e1 100644
--- a/include/Utils.hpp
+++ b/include/Utils.hpp
@@ -81,6 +81,7 @@
 {
 constexpr const char* interface = "org.freedesktop.DBus.Properties";
 constexpr const char* get = "Get";
+constexpr const char* set = "Set";
 } // namespace properties
 
 namespace power
@@ -152,6 +153,22 @@
     }
 }
 
+inline void setLed(std::shared_ptr<sdbusplus::asio::connection> conn,
+                   const std::string& name, bool on)
+{
+    conn->async_method_call(
+        [name](const boost::system::error_code ec) {
+            if (ec)
+            {
+                std::cerr << "Failed to set LED " << name << "\n";
+            }
+        },
+        "xyz.openbmc_project.LED.GroupManager",
+        "/xyz/openbmc_project/led/groups/" + name, properties::interface,
+        properties::set, "xyz.openbmc_project.Led.Group", "Asserted",
+        std::variant<bool>(on));
+}
+
 void createInventoryAssoc(
     std::shared_ptr<sdbusplus::asio::connection> conn,
     std::shared_ptr<sdbusplus::asio::dbus_interface> association,