em_uvcc: usb_config.sh: add mtp config

On Linux, mtp-server is built on f_mtp drivers
which kernel-4.19 removed,so need add old drivers
and build mtp-server before.

Change-Id: I55f8e5af1aa6d5fff896febcb5528ca2481ba025
Signed-off-by: Mark Huang <huangjc@rock-chips.com>

oem/oem_uvcc/usb_config.sh

@@ -2,6 +2,7 @@
 
 ADB_EN=on
 DFU_EN=off
+MTP_EN=off
 if ( echo $2 |grep -q "off" ); then
 ADB_EN=off
 fi
@@ -91,6 +92,15 @@ hid_device_config()
   echo -ne \\x05\\x0c\\x09\\x01\\xa1\\x01\\x15\\x00\\x25\\x01\\x09\\xe9\\x09\\xea\\x75\\x01\\x95\\x02\\x81\\x06\\x09\\xe2\\x95\\x01\\x81\\x06\\x95\\x05\\x81\\x07\\xc0 > ${USB_FUNCTIONS_DIR}/hid.usb0/report_desc
   ln -s ${USB_FUNCTIONS_DIR}/hid.usb0 ${USB_CONFIGS_DIR}/f$1
 }
+mtp_device_config()
+{
+  mkdir ${USB_FUNCTIONS_DIR}/mtp.gs0
+  echo "MTP" > ${USB_FUNCTIONS_DIR}/mtp.gs0/os_desc/interface.MTP/compatible_id
+  echo 1 > ${USB_FUNCTIONS_DIR}/../os_desc/use
+  echo "mtp on++++++ f$1"
+  ln -s ${USB_FUNCTIONS_DIR}/mtp.gs0 ${USB_CONFIGS_DIR}/f$1
+  MTP_EN=on
+}
 uvc_device_config()
 {
   mkdir ${USB_FUNCTIONS_DIR}/uvc.gs6
@@ -276,8 +286,14 @@ uac2)
    ;;
 hid)
    hid_device_config 2
+   echo "uvc_hid" > ${USB_CONFIGS_DIR}/strings/0x409/configuration
    echo "config uvc and hid..."
     ;;
+mtp)
+   mtp_device_config 2
+   echo "uvc_mtp" > ${USB_CONFIGS_DIR}/strings/0x409/configuration
+   echo "config uvc and mtp..."
+   ;;
 uac1_rndis)
    #uac_device_config uac1
    mkdir /sys/kernel/config/usb_gadget/rockchip/functions/rndis.gs0
@@ -342,6 +358,10 @@ fi
 UDC=`ls /sys/class/udc/| awk '{print $1}'`
 echo $UDC > /sys/kernel/config/usb_gadget/rockchip/UDC
 
+if [ $MTP_EN = on ];then
+    start-stop-daemon --start --quiet --background --exec /usr/bin/mtp-server
+fi
+
 if [ "$1" ]; then
   pre_run_rndis $1
 fi