hwc: Add secure display attributestable/cm-12.1-caf-8916-YOG3C

- External displays can be secure or non-secure based on HDCP
- Propogate this to the SF with the getDisplayConfig
- Non-virtual displays(pri and hdmi) are considered to be secure
- For WFD using V4L2 archiecture, read the HDCP status from the
  sysfs and update accordingly

Change-Id: I7ac273aeb845c4762dc0690c7b88841c911c044b

3 files changed, 6 insertions, 0 deletions

diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index 15334d91e..9a66d89a6 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -786,6 +786,7 @@ int hwc_getDisplayAttributes(struct hwc_composer_device_1* dev, int disp,
         HWC_DISPLAY_HEIGHT,
         HWC_DISPLAY_DPI_X,
         HWC_DISPLAY_DPI_Y,
+        HWC_DISPLAY_SECURE,
         HWC_DISPLAY_NO_ATTRIBUTE,
     };
 
@@ -820,6 +821,9 @@ int hwc_getDisplayAttributes(struct hwc_composer_device_1* dev, int disp,
         case HWC_DISPLAY_DPI_Y:
             values[i] = (int32_t) (ctx->dpyAttr[disp].ydpi*1000.0);
             break;
+        case HWC_DISPLAY_SECURE:
+            values[i] = (int32_t) (ctx->dpyAttr[disp].secure);
+            break;
         default:
             ALOGE("Unknown display attribute %d",
                     attributes[i]);
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 3874e9bdd..75d4698bd 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -229,6 +229,7 @@ static int openFramebufferDevice(hwc_context_t *ctx)
     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].dynRefreshRate = (uint32_t)fps;
     ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period =
             (uint32_t)(1000000000l / fps);
+    ctx->dpyAttr[HWC_DISPLAY_PRIMARY].secure = true;
 
     //To change resolution of primary display
     changeResolution(ctx, info.xres, info.yres, info.width, info.height);
diff --git a/libhwcomposer/hwc_utils.h b/libhwcomposer/hwc_utils.h
index c67fa7a11..8545e14c8 100644
--- a/libhwcomposer/hwc_utils.h
+++ b/libhwcomposer/hwc_utils.h
@@ -92,6 +92,7 @@ struct DisplayAttributes {
     uint32_t stride;
     float xdpi;
     float ydpi;
+    bool secure;
     int fd;
     bool connected; //Applies only to pluggable disp.
     //Connected does not mean it ready to use.