commit 6645272868bf7d2ff3932436b79af2d92ddfb44e
author Ady Abraham <adyabr@google.com> Tue Mar 14 17:41:47 2023 -0700
committer Ying Wei <whisperwing@google.com> Thu Mar 16 16:44:24 2023 +0000
tree 7cf36ea790845728a5925c84da0d900f46f64a1d
parent b1e10d15e6b38ac8524f5155736e78db5d223a24

SF: trace display power state

Bug: 267195714
Test: manual
Change-Id: If518fabf16d91c1a58f7b68a5f4de0629df90fec

services/surfaceflinger/DisplayDevice.cpp

diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index 5f73fbc..a89b23c 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -181,11 +181,23 @@
         getCompositionDisplay()->applyDisplayBrightness(true);
     }
 
-    mPowerMode = mode;
+    if (mPowerMode) {
+        *mPowerMode = mode;
+    } else {
+        mPowerMode.emplace("PowerMode -" + to_string(getId()), mode);
+    }
 
     getCompositionDisplay()->setCompositionEnabled(isPoweredOn());
 }
 
+void DisplayDevice::tracePowerMode() {
+    // assign the same value for tracing
+    if (mPowerMode) {
+        const hal::PowerMode powerMode = *mPowerMode;
+        *mPowerMode = powerMode;
+    }
+}
+
 void DisplayDevice::enableLayerCaching(bool enable) {
     getCompositionDisplay()->setLayerCachingEnabled(enable);
 }