commit 8a22081e499731b0f47292e3bf4d54a080ac6be9
author Manoj Kumar AVM <manojavm@codeaurora.org> Thu Oct 10 11:46:06 2013 -0700
committer Manoj Kumar AVM <manojavm@codeaurora.org> Tue Jan 14 13:32:31 2014 -0800
tree d8ea833441162c48e1c3c178b5c5e4304c758199
parent 8dad692bcb6e2e6b2ad88e4c16b0f7ec0f93b96e

hwc: Add support for Macro Tile feature

Macro tile is enabled only if all the conditions are met:
  1. GPU hardware should support Macro Tiling.
  2. MDSS hardware should support Macro Tiling.
  3. USAGE flags shouldnt contain GRALLOC_USAGE_SW_READ_OFTEN and
     GRALLOC_USAGE_SW_WRITE_OFTEN.
  4. RGB 16bit and 32bit formats.
  5. persist.hwc.macro_tile_enable flag should be enabled.

PRIV_FLAGS_TILE_RENDERED flag is added to indicate whether the layer
is rendered/composited in Macro Tiling or Linear format.

Change-Id: Ie3139839c84d76c5d1a2300f33910a09eb7336f4

libqdutils/mdp_version.cpp

diff --git a/libqdutils/mdp_version.cpp b/libqdutils/mdp_version.cpp
index b219cd5..525010d 100644
--- a/libqdutils/mdp_version.cpp
+++ b/libqdutils/mdp_version.cpp
@@ -47,6 +47,7 @@
     mFeatures = 0;
     mMDPUpscale = 0;
     mMDPDownscale = 0;
+    mMacroTileEnabled = false;
     mPanelType = NO_PANEL;
     mLowBw = 0;
     mHighBw = 0;
@@ -136,6 +137,14 @@
     memset(sysfsPath, 0, sizeof(sysfsPath));
     snprintf(sysfsPath , sizeof(sysfsPath),
             "/sys/class/graphics/fb0/mdp/caps");
+    char property[PROPERTY_VALUE_MAX];
+    bool enableMacroTile = false;
+
+    if((property_get("persist.hwc.macro_tile_enable", property, NULL) > 0) &&
+       (!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
+        (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
+        enableMacroTile = true;
+    }
 
     sysfsFd = fopen(sysfsPath, "rb");
 
@@ -185,6 +194,11 @@
                                     strlen("decimation"))) {
                            mFeatures |= MDP_DECIMATION_EN;
                         }
+                        else if(!strncmp(tokens[i], "tile_format",
+                                    strlen("tile_format"))) {
+                           if(enableMacroTile)
+                               mMacroTileEnabled = true;
+                        }
                     }
                 }
             }
@@ -244,5 +258,10 @@
     return (mFeatures & MDP_BWC_EN);
 }
 
+bool MDPVersion::supportsMacroTile() {
+    // MACRO TILE support
+    return mMacroTileEnabled;
+}
+
 }; //namespace qdutils