Merge "hwc: Listen fb0 event for panel status"
diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index e9f2b31..fb23470 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -140,7 +140,9 @@
 
 static void handleGeomChange(hwc_context_t *ctx, int dpy,
         hwc_display_contents_1_t *list) {
-    if(list->flags & HWC_GEOMETRY_CHANGED) {
+    /* No point to calling overlay_set on MDP3 */
+    if(list->flags & HWC_GEOMETRY_CHANGED &&
+            ctx->mMDP.version >= qdutils::MDP_V4_0) {
         ctx->mOverlay->forceSet(dpy);
     }
 }
@@ -279,8 +281,6 @@
     ctx->mRotMgr->configBegin();
     overlay::Writeback::configBegin();
 
-    Overlay::setDMAMode(Overlay::DMA_LINE_MODE);
-
     for (int32_t i = numDisplays; i >= 0; i--) {
         hwc_display_contents_1_t *list = displays[i];
         int dpy = getDpyforExternalDisplay(ctx, i);
@@ -699,6 +699,8 @@
     CALC_FPS();
     MDPComp::resetIdleFallBack();
     ctx->mVideoTransFlag = false;
+    if(ctx->mRotMgr->getNumActiveSessions() == 0)
+        Overlay::setDMAMode(Overlay::DMA_LINE_MODE);
     //Was locked at the beginning of prepare
     ctx->mDrawLock.unlock();
     return ret;
@@ -805,6 +807,11 @@
     ovDump[0] = '\0';
     ctx->mRotMgr->getDump(ovDump, 1024);
     dumpsys_log(aBuf, ovDump);
+    ovDump[0] = '\0';
+    if(Writeback::getDump(ovDump, 1024)) {
+        dumpsys_log(aBuf, ovDump);
+        ovDump[0] = '\0';
+    }
     strlcpy(buff, aBuf.string(), buff_len);
 }
 
diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index 912da27..d54a5f2 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -182,16 +182,10 @@
 
     // Following are MDP3 limitations for which we
     // need to fallback to GPU composition:
-    // 1. HW issues with mdp3 and rotation.
-    // 2. Plane alpha is not supported by MDP3.
+    // 1. Plane alpha is not supported by MDP3.
     if (qdutils::MDPVersion::getInstance().getMDPVersion() < 400) {
         for (int i = ctx->listStats[dpy].numAppLayers-1; i >= 0 ; i--) {
             hwc_layer_1_t *layer = (hwc_layer_1_t *) &list->hwLayers[i];
-            if ((layer->transform & (HAL_TRANSFORM_FLIP_H |
-                   HAL_TRANSFORM_FLIP_V | HAL_TRANSFORM_ROT_90)) &&
-                   ((layer->displayFrame.bottom - layer->displayFrame.top) % 16 ||
-                   (layer->displayFrame.right - layer->displayFrame.left) % 16))
-                return true;
             if (layer->planeAlpha != 0xFF)
                 return true;
         }
@@ -274,19 +268,24 @@
         return false;
     }
 
-    //Wait for the previous frame to complete before rendering onto it
-    if(mRelFd[0] >=0) {
-        sync_wait(mRelFd[0], 1000);
-        close(mRelFd[0]);
-        mRelFd[0] = -1;
-    }
-
     if (ctx->mMDP.version >= qdutils::MDP_V4_0) {
+        //Wait for the previous frame to complete before rendering onto it
+        if(mRelFd[0] >=0) {
+            sync_wait(mRelFd[0], 1000);
+            close(mRelFd[0]);
+            mRelFd[0] = -1;
+        }
+
         //Clear the visible region on the render buffer
         //XXX: Do this only when needed.
         hwc_rect_t clearRegion;
         getNonWormholeRegion(list, clearRegion);
         clear(renderBuffer, clearRegion);
+    } else {
+        if(mRelFd[0] >=0) {
+            copybit_device_t *copybit = getCopyBitDevice();
+            copybit->set_sync(copybit, mRelFd[0]);
+        }
     }
     // numAppLayers-1, as we iterate from 0th layer index with HWC_COPYBIT flag
     for (int i = 0; i <= (ctx->listStats[dpy].numAppLayers-1); i++) {
@@ -319,6 +318,10 @@
         copybit_device_t *copybit = getCopyBitDevice();
         // Async mode
         copybit->flush_get_fence(copybit, fd);
+        if(mRelFd[0] >=0 && ctx->mMDP.version == qdutils::MDP_V3_0_4) {
+            close(mRelFd[0]);
+            mRelFd[0] = -1;
+        }
     }
     return true;
 }
diff --git a/libhwcomposer/hwc_fbupdate.cpp b/libhwcomposer/hwc_fbupdate.cpp
index 12177b3..391b150 100644
--- a/libhwcomposer/hwc_fbupdate.cpp
+++ b/libhwcomposer/hwc_fbupdate.cpp
@@ -58,6 +58,7 @@
 }
 
 bool FBUpdateNonSplit::preRotateExtDisplay(hwc_context_t *ctx,
+                                            hwc_layer_1_t *layer,
                                             ovutils::Whf &info,
                                             hwc_rect_t& sourceCrop,
                                             ovutils::eMdpFlags& mdpFlags,
@@ -74,6 +75,7 @@
             mRot = NULL;
             return false;
         }
+       ctx->mLayerRotMap[mDpy]->add(layer, mRot);
         info.format = (mRot)->getDstFormat();
         updateSource(orient, info, sourceCrop);
         rotFlags |= ovutils::ROT_PREROTATED;
@@ -162,7 +164,8 @@
                                    transform, orient);
         setMdpFlags(layer, mdpFlags, 0, transform);
         // For External use rotator if there is a rotation value set
-        ret = preRotateExtDisplay(ctx, info, sourceCrop, mdpFlags, rotFlags);
+        ret = preRotateExtDisplay(ctx, layer, info,
+                sourceCrop, mdpFlags, rotFlags);
         if(!ret) {
             ALOGE("%s: preRotate for external Failed!", __FUNCTION__);
             return false;
diff --git a/libhwcomposer/hwc_fbupdate.h b/libhwcomposer/hwc_fbupdate.h
index 0e3f29e..ce6af63 100644
--- a/libhwcomposer/hwc_fbupdate.h
+++ b/libhwcomposer/hwc_fbupdate.h
@@ -66,6 +66,7 @@
     bool configure(hwc_context_t *ctx, hwc_display_contents_1 *list,
             int fbZorder);
     bool preRotateExtDisplay(hwc_context_t *ctx,
+                                 hwc_layer_1_t *layer,
                                  ovutils::Whf &info,
                                  hwc_rect_t& sourceCrop,
                                  ovutils::eMdpFlags& mdpFlags,
diff --git a/libhwcomposer/hwc_mdpcomp.cpp b/libhwcomposer/hwc_mdpcomp.cpp
index e65d5e7..bb52728 100644
--- a/libhwcomposer/hwc_mdpcomp.cpp
+++ b/libhwcomposer/hwc_mdpcomp.cpp
@@ -242,10 +242,9 @@
 
 void MDPComp::LayerCache::reset() {
     memset(&hnd, 0, sizeof(hnd));
-    mdpCount = 0;
-    fbCount = 0;
+    memset(&isFBComposed, true, sizeof(isFBComposed));
+    memset(&drop, false, sizeof(drop));
     layerCount = 0;
-    fbZ = -1;
 }
 
 void MDPComp::LayerCache::cacheAll(hwc_display_contents_1_t* list) {
@@ -256,10 +255,21 @@
 }
 
 void MDPComp::LayerCache::updateCounts(const FrameInfo& curFrame) {
-    mdpCount = curFrame.mdpCount;
-    fbCount = curFrame.fbCount;
     layerCount = curFrame.layerCount;
-    fbZ = curFrame.fbZ;
+    memcpy(&isFBComposed, &curFrame.isFBComposed, sizeof(isFBComposed));
+    memcpy(&drop, &curFrame.drop, sizeof(drop));
+}
+
+bool MDPComp::LayerCache::isSameFrame(const FrameInfo& curFrame) {
+    if(layerCount != curFrame.layerCount)
+        return false;
+    for(int i = 0; i < curFrame.layerCount; i++) {
+        if((curFrame.isFBComposed[i] != isFBComposed[i]) ||
+                (curFrame.drop[i] != drop[i])) {
+            return false;
+        }
+    }
+    return true;
 }
 
 bool MDPComp::isSupportedForMDPComp(hwc_context_t *ctx, hwc_layer_1_t* layer) {
@@ -1167,13 +1177,9 @@
         } else { //Success
             //Any change in composition types needs an FB refresh
             mCurrentFrame.needsRedraw = false;
-            if(mCurrentFrame.fbCount &&
-                    ((mCurrentFrame.mdpCount != mCachedFrame.mdpCount) ||
-                     (mCurrentFrame.fbCount != mCachedFrame.fbCount) ||
-                     (mCurrentFrame.fbZ != mCachedFrame.fbZ) ||
-                     (!mCurrentFrame.mdpCount) ||
+            if(!mCachedFrame.isSameFrame(mCurrentFrame) ||
                      (list->flags & HWC_GEOMETRY_CHANGED) ||
-                     isSkipPresent(ctx, mDpy))) {
+                     isSkipPresent(ctx, mDpy)) {
                 mCurrentFrame.needsRedraw = true;
             }
         }
diff --git a/libhwcomposer/hwc_mdpcomp.h b/libhwcomposer/hwc_mdpcomp.h
index 3882bee..1d5d715 100644
--- a/libhwcomposer/hwc_mdpcomp.h
+++ b/libhwcomposer/hwc_mdpcomp.h
@@ -108,10 +108,9 @@
     /* cached data */
     struct LayerCache {
         int layerCount;
-        int mdpCount;
-        int fbCount;
-        int fbZ;
         buffer_handle_t hnd[MAX_NUM_APP_LAYERS];
+        bool isFBComposed[MAX_NUM_APP_LAYERS];
+        bool drop[MAX_NUM_APP_LAYERS];
 
         /* c'tor */
         LayerCache();
@@ -119,6 +118,7 @@
         void reset();
         void cacheAll(hwc_display_contents_1_t* list);
         void updateCounts(const FrameInfo&);
+        bool isSameFrame(const FrameInfo& curFrame);
     };
 
     /* allocates pipe from pipe book */
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 06d387d..e6c235e 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -312,6 +312,12 @@
 
     float fbWidth = ctx->dpyAttr[dpy].xres;
     float fbHeight = ctx->dpyAttr[dpy].yres;
+    if(ctx->dpyAttr[dpy].mDownScaleMode) {
+        // if downscale Mode is enabled for external, need to query
+        // the actual width and height, as that is the physical w & h
+        ctx->mExtDisplay->getAttributes((int&)fbWidth, (int&)fbHeight);
+    }
+
 
     // Since external is rotated 90, need to swap width/height
     int extOrient = getExtOrientation(ctx);
diff --git a/liboverlay/overlayRotator.cpp b/liboverlay/overlayRotator.cpp
index 84a9818..7b3dda1 100644
--- a/liboverlay/overlayRotator.cpp
+++ b/liboverlay/overlayRotator.cpp
@@ -168,8 +168,8 @@
             mRot[i]->getDump(buf, len);
         }
     }
-    char str[32] = {'\0'};
-    snprintf(str, 32, "\n================\n");
+    char str[4] = {'\0'};
+    snprintf(str, 4, "\n");
     strncat(buf, str, strlen(str));
 }
 
diff --git a/liboverlay/overlayRotator.h b/liboverlay/overlayRotator.h
index f551f1d..7c1095f 100644
--- a/liboverlay/overlayRotator.h
+++ b/liboverlay/overlayRotator.h
@@ -238,6 +238,7 @@
      */
     void getDump(char *buf, size_t len);
     int getRotDevFd();
+    int getNumActiveSessions() { return mUseCount; }
 private:
     overlay::Rotator *mRot[MAX_ROT_SESS];
     int mUseCount;
diff --git a/liboverlay/overlayUtils.cpp b/liboverlay/overlayUtils.cpp
index fd8bfe2..1377182 100644
--- a/liboverlay/overlayUtils.cpp
+++ b/liboverlay/overlayUtils.cpp
@@ -427,9 +427,8 @@
         const msmfb_data& ov) {
     char str_data[256] = {'\0'};
     snprintf(str_data, 256,
-            "%s offset=%d memid=%d id=%d flags=0x%x priv=%d\n",
-            prefix, ov.offset, ov.memory_id, ov.id, ov.flags,
-            ov.priv);
+            "%s offset=%d memid=%d id=%d flags=0x%x\n",
+            prefix, ov.offset, ov.memory_id, ov.id, ov.flags);
     strncat(buf, str_data, strlen(str_data));
 }
 
diff --git a/liboverlay/overlayWriteback.cpp b/liboverlay/overlayWriteback.cpp
index 5c6d773..50aa337 100644
--- a/liboverlay/overlayWriteback.cpp
+++ b/liboverlay/overlayWriteback.cpp
@@ -240,6 +240,17 @@
     }
 }
 
+bool Writeback::getDump(char *buf, size_t len) {
+    if(sWb) {
+        utils::getDump(buf, len, "WBData", sWb->mFbData);
+        char str[4] = {'\0'};
+        snprintf(str, 4, "\n");
+        strncat(buf, str, strlen(str));
+        return true;
+    }
+    return false;
+}
+
 Writeback *Writeback::sWb = 0;
 bool Writeback::sUsed = false;
 
diff --git a/liboverlay/overlayWriteback.h b/liboverlay/overlayWriteback.h
index 8c0c52a..9785b64 100644
--- a/liboverlay/overlayWriteback.h
+++ b/liboverlay/overlayWriteback.h
@@ -92,6 +92,9 @@
     static void configBegin() { sUsed = false; }
     static void configDone();
     static void clear();
+    //Will take a dump of data structure only if there is an instance existing
+    //Returns true if dump is added to the input buffer, false otherwise
+    static bool getDump(char *buf, size_t len);
 
 private:
     explicit Writeback();