commit ba713389c2b9ac66a50d1f13ff42ce72d0b0eba9
author Ramkumar Radhakrishnan <ramkumar@codeaurora.org> Fri Aug 30 18:41:07 2013 -0700
committer Arun Kumar K.R <akumarkr@codeaurora.org> Tue Oct 08 16:03:24 2013 -0700
tree ba14943019d8539fa6b6f29805cc49e5422a933a
parent 164f6d038e63c7e40346aff2542be2853f8edb9a

hwc: Add support for Secure display

- Identify secure display layer in the hwc_list
- Need to set both SECURE_OVERLAY and SECURE_DISPLAY flags for the secure
  display layer
- Disable idle timeout for secure display usecase, as GPU should not be
  accessing secure display layer

Change-Id: I555910db77c466b5e103b24b4f0ec7f47bb210a5

libgralloc/gpu.cpp

diff --git a/libgralloc/gpu.cpp b/libgralloc/gpu.cpp
index ce15304..0136407 100644
--- a/libgralloc/gpu.cpp
+++ b/libgralloc/gpu.cpp
@@ -146,6 +146,10 @@
             flags |= private_handle_t::PRIV_FLAGS_HW_TEXTURE;
         }
 
+        if(usage & GRALLOC_USAGE_PRIVATE_SECURE_DISPLAY) {
+            flags |= private_handle_t::PRIV_FLAGS_SECURE_DISPLAY;
+        }
+
         flags |= data.allocType;
         int eBaseAddr = int(eData.base) + eData.offset;
         private_handle_t *hnd = new private_handle_t(data.fd, size, flags,

libgralloc/gralloc_priv.h

diff --git a/libgralloc/gralloc_priv.h b/libgralloc/gralloc_priv.h
index b3fddf1..a97cced 100644
--- a/libgralloc/gralloc_priv.h
+++ b/libgralloc/gralloc_priv.h
@@ -70,6 +70,9 @@
 
     /* CAMERA heap is a carveout heap for camera, is not secured*/
     GRALLOC_USAGE_PRIVATE_CAMERA_HEAP     =       0x00400000,
+
+    /* This flag is used for SECURE display usecase */
+    GRALLOC_USAGE_PRIVATE_SECURE_DISPLAY  =       0x00800000,
 };
 
 enum {
@@ -162,6 +165,7 @@
             PRIV_FLAGS_ITU_R_601          = 0x00200000,
             PRIV_FLAGS_ITU_R_601_FR       = 0x00400000,
             PRIV_FLAGS_ITU_R_709          = 0x00800000,
+            PRIV_FLAGS_SECURE_DISPLAY     = 0x01000000,
         };
 
         // file-descriptors