diff --git a/libhwcomposer/hwc_ad.cpp b/libhwcomposer/hwc_ad.cpp
index 49e7e2a..a26f659 100644
--- a/libhwcomposer/hwc_ad.cpp
+++ b/libhwcomposer/hwc_ad.cpp
@@ -130,7 +130,8 @@
         int nYuvIndex = ctx->listStats[HWC_DISPLAY_PRIMARY].yuvIndices[0];
         const hwc_layer_1_t* layer = &list->hwLayers[nYuvIndex];
         private_handle_t *hnd = (private_handle_t *)layer->handle;
-        if(hnd && hnd->width <= qdutils::MAX_DISPLAY_DIM) {
+        qdutils::MDPVersion& mdpHw =  qdutils::MDPVersion::getInstance();
+        if(hnd && hnd->width <= mdpHw.getMaxMixerWidth()) {
             mDoable = true;
         }
     }
diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index a5ecb3a..33d460b 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -234,9 +234,6 @@
         finalW = max(finalW, ALIGN((overlap.right - overlap.left), 32));
         finalH += ALIGN((overlap.bottom - overlap.top), 32);
         if(finalH > ALIGN((overlap.bottom - overlap.top), 32)) {
-            // Calculate the offset for RGBA(4BPP)
-            ptorInfo->mRenderBuffOffset[i] = finalW *
-                (finalH - ALIGN((overlap.bottom - overlap.top), 32)) * 4;
             // Calculate the dest top, left will always be zero
             ptorInfo->displayFrame[i].top = (finalH -
                                 (ALIGN((overlap.bottom - overlap.top), 32)));
@@ -251,6 +248,14 @@
     getBufferSizeAndDimensions(finalW, finalH, HAL_PIXEL_FORMAT_RGBA_8888,
                                alignW, alignH);
 
+    int heightFromTop = 0;
+    for (int i = 0; i < ptorInfo->count; i++) {
+        // Offset depends on stride calculated by gralloc for RGBA (4 bpp)
+        ptorInfo->mRenderBuffOffset[i] = alignW * heightFromTop * 4;
+        heightFromTop += ALIGN((ptorInfo->displayFrame[i].bottom -
+                            ptorInfo->displayFrame[i].top), 32);
+    }
+
     if ((mAlignedWidth != alignW) || (mAlignedHeight != alignH)) {
         // Overlap rect has changed, so free render buffers
         freeRenderBuffers();
diff --git a/libhwcomposer/hwc_fbupdate.cpp b/libhwcomposer/hwc_fbupdate.cpp
index de4cd05..5014af9 100644
--- a/libhwcomposer/hwc_fbupdate.cpp
+++ b/libhwcomposer/hwc_fbupdate.cpp
@@ -474,7 +474,7 @@
     ovutils::eDest destR = ovutils::OV_INVALID;
 
     /*  Use 2 pipes IF
-        a) FB's width is > 2048 or
+        a) FB's width is > Mixer width or
         b) On primary, driver has indicated with caps to split always. This is
            based on an empirically derived value of panel height.
     */
@@ -483,7 +483,7 @@
             qdutils::MDPVersion::getInstance().isSrcSplitAlways();
 
     if(((fbUpdatingRect.right - fbUpdatingRect.left) >
-            qdutils::MAX_DISPLAY_DIM) or
+            (int)qdutils::MDPVersion::getInstance().getMaxMixerWidth()) or
             primarySplitAlways) {
         destR = ov.getPipe(pipeSpecs);
         if(destR == ovutils::OV_INVALID) {
diff --git a/libhwcomposer/hwc_mdpcomp.cpp b/libhwcomposer/hwc_mdpcomp.cpp
index 3a60fa3..adf30fe 100644
--- a/libhwcomposer/hwc_mdpcomp.cpp
+++ b/libhwcomposer/hwc_mdpcomp.cpp
@@ -349,6 +349,7 @@
     int dst_h = dst.bottom - dst.top;
     float w_scale = ((float)crop_w / (float)dst_w);
     float h_scale = ((float)crop_h / (float)dst_h);
+    MDPVersion& mdpHw = MDPVersion::getInstance();
 
     /* Workaround for MDP HW limitation in DSI command mode panels where
      * FPS will not go beyond 30 if buffers on RGB pipes are of width or height
@@ -360,29 +361,29 @@
         return false;
 
     if((w_scale > 1.0f) || (h_scale > 1.0f)) {
-        const uint32_t maxMDPDownscale =
-            qdutils::MDPVersion::getInstance().getMaxMDPDownscale();
+        const uint32_t maxMDPDownscale = mdpHw.getMaxMDPDownscale();
         const float w_dscale = w_scale;
         const float h_dscale = h_scale;
 
         if(ctx->mMDP.version >= qdutils::MDSS_V5) {
 
-            if(!qdutils::MDPVersion::getInstance().supportsDecimation()) {
+            if(!mdpHw.supportsDecimation()) {
                 /* On targets that doesnt support Decimation (eg.,8x26)
                  * maximum downscale support is overlay pipe downscale.
                  */
-                if(crop_w > MAX_DISPLAY_DIM || w_dscale > maxMDPDownscale ||
+                if(crop_w > mdpHw.getMaxMixerWidth() ||
+                        w_dscale > maxMDPDownscale ||
                         h_dscale > maxMDPDownscale)
                     return false;
             } else {
                 // Decimation on macrotile format layers is not supported.
                 if(isTileRendered(hnd)) {
-                    /* MDP can read maximum MAX_DISPLAY_DIM width.
-                     * Bail out if
-                     *      1. Src crop > MAX_DISPLAY_DIM on nonsplit MDPComp
+                    /* Bail out if
+                     *      1. Src crop > Mixer limit on nonsplit MDPComp
                      *      2. exceeds maximum downscale limit
                      */
-                    if(((crop_w > MAX_DISPLAY_DIM) && !sSrcSplitEnabled) ||
+                    if(((crop_w > mdpHw.getMaxMixerWidth()) &&
+                                !sSrcSplitEnabled) ||
                             w_dscale > maxMDPDownscale ||
                             h_dscale > maxMDPDownscale) {
                         return false;
@@ -397,8 +398,7 @@
     }
 
     if((w_scale < 1.0f) || (h_scale < 1.0f)) {
-        const uint32_t upscale =
-            qdutils::MDPVersion::getInstance().getMaxMDPUpscale();
+        const uint32_t upscale = mdpHw.getMaxMDPUpscale();
         const float w_uscale = 1.0f / w_scale;
         const float h_uscale = 1.0f / h_scale;
 
@@ -688,8 +688,10 @@
         return false;
     }
 
-    if(mDpy > HWC_DISPLAY_PRIMARY && (priDispW > MAX_DISPLAY_DIM) &&
-                              (ctx->dpyAttr[mDpy].xres < MAX_DISPLAY_DIM)) {
+    MDPVersion& mdpHw = MDPVersion::getInstance();
+    if(mDpy > HWC_DISPLAY_PRIMARY &&
+            (priDispW >  mdpHw.getMaxMixerWidth()) &&
+            (ctx->dpyAttr[mDpy].xres <  mdpHw.getMaxMixerWidth())) {
         // Disable MDP comp on Secondary when the primary is highres panel and
         // the secondary is a normal 1080p, because, MDP comp on secondary under
         // in such usecase, decimation gets used for downscale and there will be
@@ -721,11 +723,9 @@
         //For 8x26 with panel width>1k, if RGB layer needs HFLIP fail mdp comp
         // may not need it if Gfx pre-rotation can handle all flips & rotations
         int transform = (layer->flags & HWC_COLOR_FILL) ? 0 : layer->transform;
-        if(qdutils::MDPVersion::getInstance().is8x26() &&
-                                (ctx->dpyAttr[mDpy].xres > 1024) &&
-                                (transform & HWC_TRANSFORM_FLIP_H) &&
-                                (!isYuvBuffer(hnd)))
-                   return false;
+        if( mdpHw.is8x26() && (ctx->dpyAttr[mDpy].xres > 1024) &&
+                (transform & HWC_TRANSFORM_FLIP_H) && (!isYuvBuffer(hnd)))
+            return false;
     }
 
     if(ctx->mAD->isDoable()) {
@@ -2259,14 +2259,15 @@
            if the layer's width is > mixer's width
     */
 
+    MDPVersion& mdpHw = MDPVersion::getInstance();
     bool primarySplitAlways = (mDpy == HWC_DISPLAY_PRIMARY) and
-            qdutils::MDPVersion::getInstance().isSrcSplitAlways();
+            mdpHw.isSrcSplitAlways();
     int lSplit = getLeftSplit(ctx, mDpy);
     int dstWidth = dst.right - dst.left;
     int cropWidth = crop.right - crop.left;
 
-    if(dstWidth > qdutils::MAX_DISPLAY_DIM or
-            cropWidth > qdutils::MAX_DISPLAY_DIM or
+    if(dstWidth > mdpHw.getMaxMixerWidth() or
+            cropWidth > mdpHw.getMaxMixerWidth() or
             (primarySplitAlways and (cropWidth > lSplit))) {
         pipe_info.rIndex = ctx->mOverlay->getPipe(pipeSpecs);
         if(pipe_info.rIndex == ovutils::OV_INVALID) {
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 879e4bd..3696c05 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -78,7 +78,7 @@
 
 bool isValidResolution(hwc_context_t *ctx, uint32_t xres, uint32_t yres)
 {
-    return !((xres > qdutils::MAX_DISPLAY_DIM &&
+    return !((xres > qdutils::MDPVersion::getInstance().getMaxMixerWidth() &&
                 !isDisplaySplit(ctx, HWC_DISPLAY_PRIMARY)) ||
             (xres < MIN_DISPLAY_XRES || yres < MIN_DISPLAY_YRES));
 }
@@ -273,9 +273,15 @@
     //independent process as well.
     QService::init();
     sp<IQClient> client = new QClient(ctx);
-    interface_cast<IQService>(
+    android::sp<qService::IQService> qservice_sp = interface_cast<IQService>(
             defaultServiceManager()->getService(
-            String16("display.qservice")))->connect(client);
+            String16("display.qservice")));
+    if (qservice_sp.get()) {
+      qservice_sp->connect(client);
+    } else {
+      ALOGE("%s: Failed to acquire service pointer", __FUNCTION__);
+      return ;
+    }
 
     // Initialize device orientation to its default orientation
     ctx->deviceOrientation = 0;
@@ -1438,8 +1444,8 @@
         fd = -1;
     }
 
-    if (!dpy && ctx->mCopyBit[dpy]) {
-        if (ctx->mPtorInfo.isActive())
+    if (ctx->mCopyBit[dpy]) {
+        if (!dpy && ctx->mPtorInfo.isActive())
             ctx->mCopyBit[dpy]->setReleaseFdSync(releaseFd);
         else
             ctx->mCopyBit[dpy]->setReleaseFd(releaseFd);
@@ -2034,12 +2040,12 @@
 }
 
 bool isDisplaySplit(hwc_context_t* ctx, int dpy) {
-    if(ctx->dpyAttr[dpy].xres > qdutils::MAX_DISPLAY_DIM) {
+    qdutils::MDPVersion& mdpHw = qdutils::MDPVersion::getInstance();
+    if(ctx->dpyAttr[dpy].xres > mdpHw.getMaxMixerWidth()) {
         return true;
     }
     //For testing we could split primary via device tree values
-    if(dpy == HWC_DISPLAY_PRIMARY &&
-        qdutils::MDPVersion::getInstance().getRightSplit()) {
+    if(dpy == HWC_DISPLAY_PRIMARY && mdpHw.getRightSplit()) {
         return true;
     }
     return false;
@@ -2173,7 +2179,8 @@
             const hwc_rect_t& dst, const int& transform,
             ovutils::eMdpFlags& mdpFlags) {
     //Target doesnt support Bwc
-    if(!qdutils::MDPVersion::getInstance().supportsBWC()) {
+    qdutils::MDPVersion& mdpHw = qdutils::MDPVersion::getInstance();
+    if(!mdpHw.supportsBWC()) {
         return;
     }
     int src_w = crop.right - crop.left;
@@ -2184,7 +2191,7 @@
         swap(src_w, src_h);
     }
     //src width > MAX mixer supported dim
-    if(src_w > qdutils::MAX_DISPLAY_DIM) {
+    if(src_w > qdutils::MDPVersion::getInstance().getMaxMixerWidth()) {
         return;
     }
     //Decimation necessary, cannot use BWC. H/W requirement.
diff --git a/libqdutils/mdp_version.cpp b/libqdutils/mdp_version.cpp
index 6b53522..48f7cb7 100644
--- a/libqdutils/mdp_version.cpp
+++ b/libqdutils/mdp_version.cpp
@@ -37,6 +37,12 @@
 
 #define TOKEN_PARAMS_DELIM  "="
 
+// chip variants have same major number and minor numbers usually vary
+// for e.g., MDSS_MDP_HW_REV_101 is 0x10010000
+//                                    1001       -  major number
+//                                        0000   -  minor number
+// 8x26 v1 minor number is 0000
+//      v2 minor number is 0001 etc..
 #ifndef MDSS_MDP_HW_REV_100
 #define MDSS_MDP_HW_REV_100 0x10000000 //8974 v1
 #endif
@@ -92,6 +98,10 @@
     mRGBHasNoScalar = false;
     mRotDownscale = false;
 
+    // this is the default limit of mixer unless driver reports it.
+    // For resolutions beyond this, we use dual/split overlay pipes.
+    mMaxMixerWidth = 2048;
+
     updatePanelInfo();
 
     if(!updateSysFsInfo()) {
@@ -279,6 +289,9 @@
                 } else if(!strncmp(tokens[0], "max_bandwidth_high",
                         strlen("max_bandwidth_high"))) {
                     mHighBw = atol(tokens[1]);
+                } else if(!strncmp(tokens[0], "max_mixer_width",
+                        strlen("max_mixer_width"))) {
+                    mMaxMixerWidth = atoi(tokens[1]);
                 } else if(!strncmp(tokens[0], "features", strlen("features"))) {
                     for(int i=1; i<index;i++) {
                         if(!strncmp(tokens[i], "bwc", strlen("bwc"))) {
diff --git a/libqdutils/mdp_version.h b/libqdutils/mdp_version.h
index 6c4a3f4..ced414e 100644
--- a/libqdutils/mdp_version.h
+++ b/libqdutils/mdp_version.h
@@ -57,17 +57,6 @@
     MDSS_V5     = 500,
 };
 
-// chip variants have same major number and minor numbers usually vary
-// for e.g., MDSS_MDP_HW_REV_101 is 0x10010000
-//                                    1001       -  major number
-//                                        0000   -  minor number
-// 8x26 v1 minor number is 0000
-//      v2 minor number is 0001 etc..
-
-enum {
-    MAX_DISPLAY_DIM = 2048,
-};
-
 #define NO_PANEL         '0'
 #define MDDI_PANEL       '1'
 #define EBI2_PANEL       '2'
@@ -140,6 +129,7 @@
     unsigned long getLowBw() { return mLowBw; }
     unsigned long getHighBw() { return mHighBw; }
     bool isRotDownscaleEnabled() { return mRotDownscale; }
+    int getMaxMixerWidth() const { return mMaxMixerWidth; }
     bool isSrcSplit() const;
     bool isSrcSplitAlways() const;
     bool isRGBScalarSupported() const;
@@ -177,6 +167,7 @@
     bool mSourceSplitAlways;
     bool mRGBHasNoScalar;
     bool mRotDownscale;
+    uint32_t mMaxMixerWidth; //maximum x-res of a given mdss mixer.
 };
 }; //namespace qdutils
 #endif //INCLUDE_LIBQCOMUTILS_MDPVER