From 970ad81051319f09ad65098a92864c41c2b4e431 Mon Sep 17 00:00:00 2001
From: Chris Lu <luchris@google.com>
Date: Tue, 8 Nov 2022 18:29:17 +0800
Subject: [PATCH] Support kernel idle timer for display driver

This allows display driver to decide when to drop down to lower
refresh rate in order to save power.

Bug: 247465185
Test: capture a trace to check the idle timing
Change-Id: I54862346dae4dd7402ed4ab6246377fc02a17c43
---
 device-husky.mk | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/device-husky.mk b/device-husky.mk
index ba430f4..6c2f047 100644
--- a/device-husky.mk
+++ b/device-husky.mk
@@ -198,3 +198,6 @@ DEVICE_PACKAGE_OVERLAYS += device/google/shusky/husky/overlay
 
 # config of display brightness dimming
 PRODUCT_DEFAULT_PROPERTY_OVERRIDES += vendor.display.0.brightness.dimming.usage?=1
+
+# kernel idle timer for display driver
+PRODUCT_DEFAULT_PROPERTY_OVERRIDES += ro.surface_flinger.support_kernel_idle_timer=true