From 76473d0b5ee042f42b6a7d850773ade8b48f4353 Mon Sep 17 00:00:00 2001
From: Arthur Hung <arthurhung@google.com>
Date: Fri, 7 Oct 2022 02:24:47 +0000
Subject: [PATCH] Improve camera launch time from double tap power

Wake the device up early when camera gesture is triggered and device is
going to sleep, this could speed up finishing going to sleep state and
prevent the display doing redundant turning off/on stuff when launching
camera.

Bug: 195788686
Test: double tap to trigger camera
Change-Id: I4533e0eecdc31861263e27af164b0a04b926e252
---
 .../core/java/com/android/server/policy/PhoneWindowManager.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index a0748b4b515ee..e6714b48c2777 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -4196,6 +4196,8 @@ public class PhoneWindowManager implements WindowManagerPolicy {
         mCameraGestureTriggered = true;
         if (mRequestedOrSleepingDefaultDisplay) {
             mCameraGestureTriggeredDuringGoingToSleep = true;
+            // Wake device up early to prevent display doing redundant turning off/on stuff.
+            wakeUpFromPowerKey(event.getDownTime());
         }
         return true;
     }