3 files changed, 43 insertions, 6 deletions
diff --git a/control/actions.hpp b/control/actions.hpp
index 60b5484..d4dedba 100644
--- a/control/actions.hpp
+++ b/control/actions.hpp
@@ -250,7 +250,8 @@ auto set_net_increase_speed(T&& state, uint64_t speedDelta)
                 }
             }
         );
-        // TODO Do a request speed change for target speed update
+        // Request speed change for target speed update
+        zone.requestSpeedIncrease(netDelta);
     };
 }
 
diff --git a/control/zone.cpp b/control/zone.cpp
index d569aa8..5ed0c3a 100644
--- a/control/zone.cpp
+++ b/control/zone.cpp
@@ -110,11 +110,6 @@ void Zone::setSpeed(uint64_t speed)
         {
             speed = _floorSpeed;
         }
-        //TODO openbmc/openbmc#1626 Move to control algorithm function
-        if (speed > _ceilingSpeed)
-        {
-            speed = _ceilingSpeed;
-        }
         fan->setSpeed(speed);
     }
 }
@@ -136,6 +131,34 @@ void Zone::setActiveAllow(const Group* group, bool isActiveAllow)
     }
 }
 
+void Zone::requestSpeedIncrease(uint64_t targetDelta)
+{
+    // Only increase speed when delta is higher than
+    // the current increase delta for the zone and currently under ceiling
+    if (targetDelta > _incSpeedDelta &&
+        _targetSpeed < _ceilingSpeed)
+    {
+        _targetSpeed = (targetDelta - _incSpeedDelta) + _targetSpeed;
+        _incSpeedDelta = targetDelta;
+        //TODO openbmc/openbmc#1625 Cancel current timer countdown
+        //TODO Floor speed above target, update target to floor speed
+        if (_targetSpeed < _floorSpeed)
+        {
+            _targetSpeed = _floorSpeed;
+        }
+        // Target speed can not go above a defined ceiling speed
+        if (_targetSpeed > _ceilingSpeed)
+        {
+            _targetSpeed = _ceilingSpeed;
+        }
+
+        setSpeed(_targetSpeed);
+        //TODO openbmc/openbmc#1625 Start timer countdown for fan speed increase
+    }
+    //TODO openbmc/openbmc#1625 Clear increase delta when timer expires
+    _incSpeedDelta = 0;
+}
+
 void Zone::getProperty(sdbusplus::bus::bus& bus,
                        const std::string& path,
                        const std::string& iface,
diff --git a/control/zone.hpp b/control/zone.hpp
index 20b9ac9..cc05959 100644
--- a/control/zone.hpp
+++ b/control/zone.hpp
@@ -178,6 +178,14 @@ class Zone
             return _incSpeedDelta;
         };
 
+        /**
+         * @brief Calculate the requested target speed from the given delta
+         * and increase the fan speeds, not going above the ceiling.
+         *
+         * @param[in] targetDelta - The delta to increase the target speed by
+         */
+        void requestSpeedIncrease(uint64_t targetDelta);
+
     private:
 
         /**
@@ -226,6 +234,11 @@ class Zone
         bool _isActive = true;
 
         /**
+         * Target speed for this zone
+         */
+        uint64_t _targetSpeed = _fullSpeed;
+
+        /**
          * Speed increase delta
          */
         uint64_t _incSpeedDelta = 0;