commit 24c199de2d0899ff6b6f040c0b3ca6ef5605bac8
author Jeykumar Sankaran <jsanka@codeaurora.org> Fri May 24 09:40:36 2013 -0700
committer Jeykumar Sankaran <jsanka@codeaurora.org> Sat Jun 08 10:52:04 2013 -0700
tree 0f03300bd0e0ce22b9eb651cd21eed913abaefea
parent 1f1db523023fa67322c078dfb7fb48c7004bb386

hwcomposer: Add adb property to disable Mixed Mode

This change adds adb property support to disable mixed mode in
MDP Comp. Will be helpful in debugging issues to narrow down the
root cause.

Change-Id: I49b737bb8755dc3a35db2e1ea8ccb2043135d2b0

libhwcomposer/hwc_mdpcomp.cpp

diff --git a/libhwcomposer/hwc_mdpcomp.cpp b/libhwcomposer/hwc_mdpcomp.cpp
index ff48d79..6b2cb9e 100644
--- a/libhwcomposer/hwc_mdpcomp.cpp
+++ b/libhwcomposer/hwc_mdpcomp.cpp
@@ -37,6 +37,7 @@
 bool MDPComp::sIdleFallBack = false;
 bool MDPComp::sDebugLogs = false;
 bool MDPComp::sEnabled = false;
+bool MDPComp::sEnableMixedMode = true;
 int MDPComp::sMaxPipesPerMixer = MAX_PIPES_PER_MIXER;
 
 MDPComp* MDPComp::getObject(const int& width, int dpy) {
@@ -97,6 +98,13 @@
         }
     }
 
+    sEnableMixedMode = true;
+    if((property_get("debug.mdpcomp.mixedmode.disable", property, NULL) > 0) &&
+       (!strncmp(property, "1", PROPERTY_VALUE_MAX ) ||
+        (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
+        sEnableMixedMode = false;
+    }
+
     sDebugLogs = false;
     if(property_get("debug.mdpcomp.logs", property, NULL) > 0) {
         if(atoi(property) != 0)
@@ -352,8 +360,8 @@
 }
 
 bool MDPComp::isFrameDoable(hwc_context_t *ctx) {
-    int numAppLayers = ctx->listStats[mDpy].numAppLayers;
     bool ret = true;
+    const int numAppLayers = ctx->listStats[mDpy].numAppLayers;
 
     if(!isEnabled()) {
         ALOGD_IF(isDebug(),"%s: MDP Comp. not enabled.", __FUNCTION__);
@@ -428,7 +436,7 @@
     bool ret = false;
     if(fullMDPComp(ctx, list)) {
         ret = true;
-    } else if (partialMDPComp(ctx, list)) {
+    } else if(partialMDPComp(ctx, list)) {
         ret = true;
     }
     return ret;
@@ -462,6 +470,12 @@
 bool MDPComp::partialMDPComp(hwc_context_t *ctx, hwc_display_contents_1_t* list)
 {
     int numAppLayers = ctx->listStats[mDpy].numAppLayers;
+
+    if(!sEnableMixedMode) {
+        //Mixed mode is disabled. No need to even try caching.
+        return false;
+    }
+
     //Setup mCurrentFrame
     mCurrentFrame.reset(numAppLayers);
     updateLayerCache(ctx, list);