Modified SurfaceFlinger to implment setActiveConfig and getActiveConfig.

This can be used to change the current display mode of the device.

Change-Id: Icdc3fb58389b861dc77b68102083da6f7a96eccb
Tested: None
(cherry picked from commit 2651fa94635a96d653038fb389a0dd827338f8d3)

2 files changed, 13 insertions, 0 deletions

diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index a8fb5bd..5e3fe92 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -778,6 +778,16 @@ status_t HWComposer::setPowerMode(int disp, int mode) {
     return NO_ERROR;
 }
 
+status_t HWComposer::setActiveConfig(int disp, int mode) {
+    LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE);
+    if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) {
+        return (status_t)mHwc->setActiveConfig(mHwc, disp, mode);
+    } else {
+        LOG_FATAL_IF(mode != 0);
+    }
+    return NO_ERROR;
+}
+
 void HWComposer::disconnectDisplay(int disp) {
     LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY);
     DisplayData& dd(mDisplayData[disp]);
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 9bd99eb..5cb56a0 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -100,6 +100,9 @@ public:
     // set power mode
     status_t setPowerMode(int disp, int mode);
 
+    // set active config
+    status_t setActiveConfig(int disp, int mode);
+
     // reset state when an external, non-virtual display is disconnected
     void disconnectDisplay(int disp);