#!/bin/sh

name=`basename $0`

usage() {
  echo "$name Usage:"
  echo ""
  echo "$name [function]"
  echo "function: mtp,    support MTP function"
  echo "          adb,    support adb function"
  echo "          adb,mtp support adb and mtp function"
  echo "example:"
  echo "$name adb,mtp"
  echo ""
}

set_usb_function() {
# 1:function
# 2:idVendor
# 3:idProduct
#

  echo "$1 function"
  echo 0 > /sys/class/android_usb/android0/enable
  echo $1 > /sys/class/android_usb/android0/functions
  echo $2 > /sys/class/android_usb/android0/idVendor
  echo $3 > /sys/class/android_usb/android0/idProduct
  echo 1 > /sys/class/android_usb/android0/enable
}


if [ $# == 1 ]; then
  if [ $1 == "none" ]; then
    set_usb_function none 1f3a 1001
    return
  fi
  if [ $1 == "adb" ]; then
    set_usb_function adb 18d1 D002
    return
  fi
  if [ $1 == "mtp" ]; then
    set_usb_function mtp 1f3a 1006
    return
  fi
  if [ $1 == "mass_storage" ]; then
    set_usb_function mass_storage 1f3a 1000
    return
  fi
  if [ $1 == "adb,mtp" -o $1 == "mtp,adb" ]; then
    set_usb_function mtp,adb 1f3a 1007
    return
  fi
  if [ $1 == "adb,mass_storage" -o $1 == "mass_storage,adb" ]; then
    set_usb_function mass_storage,adb 1f3a 1002
    return
  fi
  echo "Invalid arg:$1"
  usage
else
  echo "Lack of arg!"
  usage
fi