Add isolated class for a single PWM control

app/include/fan/PwmControl.h

@@ -0,0 +1,31 @@
+#ifndef PWMCONTROL_H_
+#define PWMCONTROL_H_
+
+#include <string>
+
+enum class PWM_CONTROL_PROPERTY { CONTROL, ENABLE, MODE };
+enum class PWM_ENABLE { FULL_SPEED = 0, MANUAL_CONTROL };
+enum class PWM_MODE { DC = 0, PWM };
+
+class PwmControl {
+public:
+  PwmControl(std::string controlPath);
+
+  void pwm(int percent);
+  int pwm();
+
+  void enableManualControl();
+  void reset();
+
+private:
+  int readValue(std::string path);
+
+  std::string mControlPath;
+  std::string mEnablePath;
+  std::string mModePath;
+
+  std::string mInitialEnable;
+  std::string mInitialMode;
+};
+
+#endif // PWMCONTROL_H_