usb-hotplug

#! /bin/sh

sleep 1
dev_path=/sys$1
state=`cat ${dev_path}/state`
if [ "$state"x != "config"x  ] ; then
UDC=`ls /sys/class/udc/| awk '{print $1}'`
echo $UDC > /sys/kernel/config/usb_gadget/rockchip/UDC
functions=`cat /sys/kernel/config/usb_gadget/rockchip/configs/b.1/strings/0x409/configuration`

# if no "_" string to "cut" command, it will set the full string to output.
# add "_" to string functions avoiding no "_" case
i=2
functions=_${functions}

tmp=`echo $functions | cut -d _ -f $i`
until [ -z "$tmp" ]; do
	if [ "$tmp" == "mtp" ]; then
		mtp-server&
		break
	fi
	i=`expr $i + 1`
	tmp=`echo $functions | cut -d _ -f $i`
done
fi