From c3af02a15819ee9d5f41c5f2897315ad2ec84406 Mon Sep 17 00:00:00 2001
From: Darren Hsu <darrenhsu@google.com>
Date: Tue, 13 Jul 2021 12:03:09 +0800
Subject: [PATCH] Disable USB contaminant detection when the disable flag is
 true

Bug: 192208389
Test: Manually tested
Change-Id: Iee32ec4175283417eaa8d86d65c2a80757ebc32a
Signed-off-by: Darren Hsu <darrenhsu@google.com>
---
 conf/init.gs101.usb.rc           | 3 +++
 device.mk                        | 1 +
 disable_contaminant_detection.sh | 3 +++
 3 files changed, 7 insertions(+)
 create mode 100755 disable_contaminant_detection.sh

diff --git a/conf/init.gs101.usb.rc b/conf/init.gs101.usb.rc
index 87c2124f..7c763811 100644
--- a/conf/init.gs101.usb.rc
+++ b/conf/init.gs101.usb.rc
@@ -117,3 +117,6 @@ on property:sys.usb.config=charger && property:sys.usb.configfs=1
     symlink /config/usb_gadget/g1/functions/midi.gs5 /config/usb_gadget/g1/configs/b.1/f1
     write /config/usb_gadget/g1/UDC ${sys.usb.controller}
     setprop sys.usb.state ${sys.usb.config}
+
+on property:vendor.usb.contaminantdisable=true
+    exec /vendor/bin/hw/disable_contaminant_detection.sh
diff --git a/device.mk b/device.mk
index 990b1584..7aac78d5 100644
--- a/device.mk
+++ b/device.mk
@@ -260,6 +260,7 @@ PRODUCT_COPY_FILES += \
 PRODUCT_COPY_FILES += \
 	device/google/gs101/init.insmod.sh:$(TARGET_COPY_OUT_VENDOR)/bin/init.insmod.sh \
 	device/google/gs101/set_usb_irq.sh:$(TARGET_COPY_OUT_VENDOR)/bin/hw/set_usb_irq.sh \
+	device/google/gs101/disable_contaminant_detection.sh:$(TARGET_COPY_OUT_VENDOR)/bin/hw/disable_contaminant_detection.sh
 
 # insmod files
 PRODUCT_COPY_FILES += \
diff --git a/disable_contaminant_detection.sh b/disable_contaminant_detection.sh
new file mode 100755
index 00000000..97ae794a
--- /dev/null
+++ b/disable_contaminant_detection.sh
@@ -0,0 +1,3 @@
+#!/vendor/bin/sh
+
+echo 0 > "$(find /sys/devices/platform/10d50000.hsi2c -name contaminant_detection)"