gralloc : Add singleton class for mdp capability

Many case reading the same mdp capability multiple times from
sys file causing delay in operation. Hence reading only once.

Change-Id: I1b94ca63074aba2f078fe6add5a8de628ca87740

libgralloc/alloc_controller.cpp

@@ -76,6 +76,7 @@ using namespace qdutils;
 using namespace android;
 
 ANDROID_SINGLETON_STATIC_INSTANCE(AdrenoMemInfo);
+ANDROID_SINGLETON_STATIC_INSTANCE(MDPCapabilityInfo);
 
 static void getYuvUBwcWidthHeight(int, int, int, int&, int&);
 static unsigned int getUBwcSize(int, int, int, const int, const int);
@@ -97,7 +98,17 @@ static bool useUncached(const int& usage) {
     return false;
 }
 
-//-------------- AdrenoMemInfo-----------------------//
+//------------- MDPCapabilityInfo-----------------------//
+MDPCapabilityInfo :: MDPCapabilityInfo() {
+  isMacroTileSupported = false;
+  qdutils::querySDEInfo(HAS_MACRO_TILE, &isMacroTileSupported);
+}
+
+int MDPCapabilityInfo :: isMacroTilingSupportedByMDP(){
+    return isMacroTileSupported;
+ }
+
+//------------- AdrenoMemInfo-----------------------//
 AdrenoMemInfo::AdrenoMemInfo()
 {
     LINK_adreno_compute_aligned_width_and_height = NULL;
@@ -516,13 +527,9 @@ IMemAlloc* IonController::getAllocator(int flags)
 bool isMacroTileEnabled(int format, int usage)
 {
     bool tileEnabled = false;
-    int isMacroTileSupportedByMDP = 0;
-
-    qdutils::querySDEInfo(HAS_MACRO_TILE, &isMacroTileSupportedByMDP);
-
     // Check whether GPU & MDSS supports MacroTiling feature
     if(AdrenoMemInfo::getInstance().isMacroTilingSupportedByGPU() &&
-       isMacroTileSupportedByMDP)
+       MDPCapabilityInfo::getInstance().isMacroTilingSupportedByMDP())
     {
         // check the format
         switch(format)

libgralloc/gr.h

@@ -197,4 +197,21 @@ class AdrenoMemInfo : public android::Singleton <AdrenoMemInfo>
 
         unsigned int (*LINK_adreno_get_gpu_pixel_alignment) ();
 };
+
+
+class MDPCapabilityInfo : public android::Singleton <MDPCapabilityInfo>
+{
+    int isMacroTileSupported;
+    public:
+        MDPCapabilityInfo();
+        /*
+        * Function to return whether MDP support MacroTile feature
+        *
+        * @return  1 : supported
+        *          0 : not supported
+        */
+        int isMacroTilingSupportedByMDP();
+
+};
+
 #endif /* GR_H_ */