IPMIFruArea: Add doxygen to class

Add doxygen to IPMIFruArea class.

Change-Id: Ie28dd84c25df939671771741d7e4faca931e613e
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/fru_area.cpp b/fru_area.cpp
index b25bfef..97ac3bd 100644
--- a/fru_area.cpp
+++ b/fru_area.cpp
@@ -8,9 +8,6 @@
 
 using namespace phosphor::logging;
 
-//----------------------------------------------------------------
-// Constructor
-//----------------------------------------------------------------
 IPMIFruArea::IPMIFruArea(const uint8_t fruID, const ipmi_fru_area_type type,
                          bool bmcOnlyFru) :
     fruID(fruID),
@@ -43,10 +40,6 @@
     }
 }
 
-//-----------------------------------------------------
-// For a FRU area type, accepts the data and updates
-// area specific data.
-//-----------------------------------------------------
 void IPMIFruArea::setData(const uint8_t* value, const size_t length)
 {
     data.reserve(length); // pre-allocate the space.
diff --git a/fru_area.hpp b/fru_area.hpp
index afd983b..0bee9af 100644
--- a/fru_area.hpp
+++ b/fru_area.hpp
@@ -11,63 +11,101 @@
 
 using std::uint8_t;
 
+/**
+ * IPMIFruArea represents a piece of a FRU that is accessible over IPMI.
+ */
 class IPMIFruArea
 {
   public:
     IPMIFruArea() = delete;
     ~IPMIFruArea() = default;
 
-    // constructor
+    /**
+     * Construct an IPMIFruArea.
+     *
+     * @param[in] fruID - FRU identifier value
+     * @param[in] type - the type of FRU area.
+     * @param[in] bmcOnlyFru - Is this FRU only accessible via the BMC
+     */
     IPMIFruArea(const uint8_t fruID, const ipmi_fru_area_type type,
                 bool bmcOnlyFru = false);
 
-    // Sets the present bit
+    /**
+     * Set whether the FRU is present.
+     *
+     * @param[in] present - True if present.
+     */
     inline void setPresent(const bool present)
     {
         isPresent = present;
     }
 
-    // returns fru id;
+    /**
+     * Retrieves the FRU's ID.
+     *
+     * @return the FRU ID.
+     */
     uint8_t getFruID() const
     {
         return fruID;
     }
 
-    // Returns the length.
+    /**
+     *  Returns the length of the FRU data.
+     *
+     * @return the number of bytes.
+     */
     size_t getLength() const
     {
         return data.size();
     }
 
-    // Returns the type of the current fru area
+    /**
+     * Returns the type of the current FRU area.
+     *
+     * @return the type of FRU area
+     */
     ipmi_fru_area_type getType() const
     {
         return type;
     }
 
-    // Returns the name
+    /**
+     * Returns the FRU area name.
+     *
+     * @return the FRU area name
+     */
     const char* getName() const
     {
         return name.c_str();
     }
 
-    // Returns the data portion
+    /**
+     * Returns the data portion.
+     *
+     * @return pointer to data
+     */
     inline const uint8_t* getData() const
     {
         return data.data();
     }
 
-    // Accepts a pointer to data and sets it in the object.
-    void setData(const uint8_t*, const size_t);
+    /**
+     * Accepts a pointer to data and sets it in the object.
+     *
+     * @param[in] value - The data to copy into the FRU area
+     * @param[in] length - the number of bytes value points to
+     */
+    void setData(const uint8_t* value, const size_t length);
 
   private:
     // Unique way of identifying a FRU
     uint8_t fruID = 0;
 
-    // Type of the fru matching offsets in common header
+    // Type of the FRU matching offsets in common header
     ipmi_fru_area_type type = IPMI_FRU_AREA_INTERNAL_USE;
 
-    // Name of the fru area. ( BOARD/CHASSIS/PRODUCT )
+    // Name of the FRU area. ( BOARD/CHASSIS/PRODUCT )
     std::string name;
 
     // Special bit for BMC readable eeprom only.