commit a8c065f55d2e4826d3c53d7c0cbe2a882666a73e
author Raj Kamal <rkamal@codeaurora.org> Tue Oct 22 14:52:45 2013 +0530
committer Raj Kamal <rkamal@codeaurora.org> Tue Dec 03 09:54:06 2013 +0530
tree 9063c67d6092ae0f8c1a8288bdf0aaa97fe7bc07
parent 9becf92940305500b33bb200978c2a6940a94552

hwc: allow DMA pipe in BLOCK mode for virtual dpy

For portrait videos case on WFD, driver supports multiplexing
of DMA pipe in LINE and BLOCK mode.
Loosen the requirements to allow DMA pipe in block mode for
portrait case of virtual display.

Change-Id: I5821501f89b17bb2d29c425aee0a6c16b2a4783b

liboverlay/overlay.cpp

diff --git a/liboverlay/overlay.cpp b/liboverlay/overlay.cpp
index 9222af5..d9baadd 100644
--- a/liboverlay/overlay.cpp
+++ b/liboverlay/overlay.cpp
@@ -52,6 +52,7 @@
 
     mDumpStr[0] = '\0';
     initScalar();
+    setDMAMultiplexingSupported();
 }
 
 Overlay::~Overlay() {
@@ -117,8 +118,10 @@
             (mPipeBook[i].mMixer == MIXER_UNUSED || //Free or same mixer
              mPipeBook[i].mMixer == mixer) &&
             PipeBook::isNotAllocated(i) && //Free pipe
-            !(sDMAMode == DMA_BLOCK_MODE && //DMA pipe in Line mode
-               PipeBook::getPipeType((eDest)i) == OV_MDP_PIPE_DMA)) {
+            ( (sDMAMultiplexingSupported && dpy) ||
+              !(sDMAMode == DMA_BLOCK_MODE && //DMA pipe in Line mode
+               PipeBook::getPipeType((eDest)i) == OV_MDP_PIPE_DMA)) ){
+              //DMA-Multiplexing is only supported for WB on 8x26
             dest = (eDest)i;
             PipeBook::setAllocation(i);
             break;
@@ -458,6 +461,7 @@
 Overlay* Overlay::sInstance = 0;
 int Overlay::sDpyFbMap[DPY_MAX] = {0, -1, -1};
 int Overlay::sDMAMode = DMA_LINE_MODE;
+bool Overlay::sDMAMultiplexingSupported = false;
 int Overlay::sForceSetBitmap = 0;
 int Overlay::PipeBook::NUM_PIPES = 0;
 int Overlay::PipeBook::sPipeUsageBitmap = 0;