From 0260e9c1139739d3de33aed500a3dbe4f6f3e5d9 Mon Sep 17 00:00:00 2001
From: Steve Pfetsch <spfetsch@google.com>
Date: Tue, 26 Sep 2017 14:32:13 -0700
Subject: [PATCH] taimen: disable system-pc power management

Touch irqs can be handled late when power management is enabled.

Bug: 64141048
Change-Id: Iacef8cc340fcedb9326b694288fcb65b7a642f05
---
 init-taimen.rc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/init-taimen.rc b/init-taimen.rc
index 127abf6..6a19881 100644
--- a/init-taimen.rc
+++ b/init-taimen.rc
@@ -28,6 +28,10 @@ on boot
     # Allow ftm4 autotune from adb shell
     chown system shell /sys/devices/virtual/input/ftm4_touch/autotune
 
+on init
+    # Disable system-pc idle to prevent touch drops [b/64141048]
+    write /sys/module/lpm_levels/system/system-pc/idle_enabled N
+
 on init && property:ro.boot.revision=*
     setprop ro.boot.hardware.revision ${ro.boot.revision}