hwc: Don't allow downscale with alpha on MDP <= 4.1cm-10.1-M2mr1.1-staging

Change-Id: I86a9031a4c5ff28e9bb10f6ed7405946b1c600cc

1 files changed, 7 insertions, 1 deletions

diff --git a/libhwcomposer/hwc_mdpcomp.cpp b/libhwcomposer/hwc_mdpcomp.cpp
index ca7f98a0a..d3c8776f8 100644
--- a/libhwcomposer/hwc_mdpcomp.cpp
+++ b/libhwcomposer/hwc_mdpcomp.cpp
@@ -18,6 +18,7 @@
 
 #include "hwc_mdpcomp.h"
 #include "external.h"
+#include "mdp_version.h"
 
 #define SUPPORT_4LAYER 0
 
@@ -473,7 +474,12 @@ int MDPComp::mark_layers(hwc_context_t *ctx,
 
         if((layer_prop & MDPCOMP_LAYER_DOWNSCALE) &&
                         (layer_prop & MDPCOMP_LAYER_BLEND)) {
-            pipe_pref = PIPE_REQ_RGB;
+            if (qdutils::MDPVersion::getInstance().getMDPVersion() >=
+                    qdutils::MDP_V4_2) {
+                pipe_pref = PIPE_REQ_RGB;
+            } else {
+                return MDPCOMP_ABORT;
+            }
          }
 
         int allocated_pipe = sPipeMgr.req_for_pipe( pipe_pref);