From 3d72a5b29f412a3c5424bf160de732c570e8b92a Mon Sep 17 00:00:00 2001
From: Jimmy Hu <hhhuuu@google.com>
Date: Wed, 17 May 2023 06:06:03 +0000
Subject: [PATCH] Disable USB contaminant detection when the disable flag is
 true

(ported from 6b1106498e1164f46b9a895ed2258a20a0c7a7b5)

Bug: 263916675
Bug: 264231895
Test: setprop vendor.usb.contaminantdisable true
Change-Id: I57ea8280e4af3720dce9d9174b1cc24066c5324e
Signed-off-by: Jimmy Hu <hhhuuu@google.com>
---
 Android.bp                       | 7 +++++++
 conf/init.zuma.usb.rc            | 3 +++
 device.mk                        | 4 ++++
 disable_contaminant_detection.sh | 7 +++++++
 4 files changed, 21 insertions(+)
 create mode 100644 disable_contaminant_detection.sh

diff --git a/Android.bp b/Android.bp
index ef1e4b44..bf7fac7e 100644
--- a/Android.bp
+++ b/Android.bp
@@ -34,3 +34,10 @@ license {
         "NOTICE",
     ],
 }
+
+sh_binary {
+    name: "disable_contaminant_detection.sh",
+    src: "disable_contaminant_detection.sh",
+    vendor: true,
+    sub_dir: "hw",
+}
diff --git a/conf/init.zuma.usb.rc b/conf/init.zuma.usb.rc
index d8925eaa..b6bf02d8 100644
--- a/conf/init.zuma.usb.rc
+++ b/conf/init.zuma.usb.rc
@@ -195,6 +195,9 @@ on property:sys.usb.config=charger && property:sys.usb.configfs=1
 on property:ro.bootmode=usbuwb
     setprop persist.vendor.usb.usbradio.config uwb_acm
 
+on property:vendor.usb.contaminantdisable=true
+    exec /vendor/bin/hw/disable_contaminant_detection.sh
+
 on property:persist.vendor.usb.displayport.enabled=1
     write /sys/class/typec/port0/port0.0/mode1/active "yes"
 
diff --git a/device.mk b/device.mk
index e9eb238d..be0249d0 100644
--- a/device.mk
+++ b/device.mk
@@ -359,6 +359,10 @@ PRODUCT_COPY_FILES += \
 	device/google/$(TARGET_BOARD_PLATFORM)/conf/fstab.persist:$(TARGET_COPY_OUT_VENDOR)/etc/fstab.persist \
 	device/google/$(TARGET_BOARD_PLATFORM)/conf/fstab.modem:$(TARGET_COPY_OUT_VENDOR)/etc/fstab.modem
 
+# Shell scripts
+PRODUCT_PACKAGES += \
+	disable_contaminant_detection.sh
+
 include device/google/gs-common/insmod/insmod.mk
 
 # Insmod config files
diff --git a/disable_contaminant_detection.sh b/disable_contaminant_detection.sh
new file mode 100644
index 00000000..07149643
--- /dev/null
+++ b/disable_contaminant_detection.sh
@@ -0,0 +1,7 @@
+#!/vendor/bin/sh
+
+for f in /sys/devices/platform/10cb0000.hsi2c/i2c-*/*-0025; do
+  if [ -d $f ]; then
+    echo 0 > $f/contaminant_detection;
+  fi
+done