SurfaceFlinger: Add support for MDP3

This change is porting of following commits related to MDP3

1) SurfaceFlinger: Change to support framebuffer flip for 2D blitters
- Surfaceflinger does not flip framebuffers when there are
  no layers marked for HWC_FRAMEBUFFER
- This change checks for the HWC_BLIT flag and will request a flip
  to a new FB_TARGET buffer even if there are no FRAMEBUFFER layers

  "Change-Id: I1cb44389a05c9ec049d7f0d39c288feccb11a91c"

2) SF: Avoid wormhole clear for BLIT calls
- Do not call GPU clear from SF when composition
  type is BLIT as it'll be taken care in HAL.

  "Change-Id: Ia613eb9b824c6484ecc8c8fa4ee883545d8541b8"

3) surfaceflinger: Allow gpu to render widevine level3
- Allow gpu to render widevine level3 but keep
  blocking screen shots.

  "Change-Id: I914232a062acbb7b17901dbf2b414973230e59d9"

Change-Id: I35eef9eb1597af21c195e07d5fe4c0c73ab3a269

2 files changed, 8 insertions, 2 deletions

diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 8331828..5bdcd7f 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -707,6 +707,9 @@ status_t HWComposer::prepare() {
                     if (l.compositionType == HWC_OVERLAY) {
                         disp.hasOvComp = true;
                     }
+                    if (isCompositionTypeBlit(l.compositionType)) {
+                        disp.hasFbComp = true;
+                    }
                     if (l.compositionType == HWC_CURSOR_OVERLAY) {
                         disp.hasOvComp = true;
                     }
@@ -1242,7 +1245,7 @@ void HWComposer::dump(String8& result) const {
                     if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
                         result.appendFormat(
                                 " %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7.1f,%7.1f,%7.1f,%7.1f |%5d,%5d,%5d,%5d | %s\n",
-                                        compositionTypeName[type],
+                                        (isCompositionTypeBlit(l.compositionType)) ? "HWC_BLIT" : compositionTypeName[type],
                                         intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(),
                                         l.sourceCropf.left, l.sourceCropf.top, l.sourceCropf.right, l.sourceCropf.bottom,
                                         l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
@@ -1250,7 +1253,7 @@ void HWComposer::dump(String8& result) const {
                     } else {
                         result.appendFormat(
                                 " %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7d,%7d,%7d,%7d |%5d,%5d,%5d,%5d | %s\n",
-                                        compositionTypeName[type],
+                                        (isCompositionTypeBlit(l.compositionType)) ? "HWC_BLIT" : compositionTypeName[type],
                                         intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(),
                                         l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
                                         l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 952635f..ea9a208 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -312,6 +312,9 @@ public:
      * Extensions
      */
     virtual inline bool isVDSEnabled() const { return true; };
+    virtual inline bool isCompositionTypeBlit(const int32_t /*compType*/) const {
+            return false;
+    };
 
 private:
     void loadHwcModule();