adb_init

#!/bin/bash
#https://wiki.linaro.org/LMG/Kernel/AndroidConfigFSGadgets#ADB_gadget_configuration

mkdir -p /sys/kernel/config/usb_gadget/g1

sleep 1

#Set default Vendor and Product IDs for now
echo 0x18d1 > /sys/kernel/config/usb_gadget/g1/idVendor
echo 0x4E26 > /sys/kernel/config/usb_gadget/g1/idProduct

#Create English strings and add random deviceID
mkdir -p /sys/kernel/config/usb_gadget/g1/strings/0x409
echo 0123459876 > /sys/kernel/config/usb_gadget/g1/strings/0x409/serialnumber

#Update following if you want to
echo "Lineo" > /sys/kernel/config/usb_gadget/g1/strings/0x409/manufacturer
echo "Board FAM Cloud" > /sys/kernel/config/usb_gadget/g1/strings/0x409/product

#Create gadget configuration
mkdir -p /sys/kernel/config/usb_gadget/g1/configs/c.1
mkdir -p /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409
echo "Conf 1" > /sys/kernel/config/usb_gadget/g1/configs/c.1/strings/0x409/configuration
echo 120 > /sys/kernel/config/usb_gadget/g1/configs/c.1/Maxpower

#Create Adb FunctionFS function
#And link it to the gadget configuration
#stop adbd
mkdir -p /sys/kernel/config/usb_gadget/g1/functions/ffs.adb
mkdir -p /dev/usb-ffs
mkdir -p /dev/usb-ffs/adb

sleep 1
killall adbd

mount -o uid=2000,gid=2000 -t functionfs adb /dev/usb-ffs/adb
ln -s /sys/kernel/config/usb_gadget/g1/functions/ffs.adb  /sys/kernel/config/usb_gadget/g1/configs/c.1/ffs.adb

adbd &

sleep 1
# Find the available udc
udc=$(ls -1 /sys/class/udc/)
if [ -z $udc ]; then
    echo "No UDC driver registered"
    exit 1
fi
sleep 1
echo "${udc}" > /sys/kernel/config/usb_gadget/g1/UDC