-#!/bin/sh
-
-# https://gist.github.com/kbingham/c39c4cc7c20882a104c08df5206e2f9f
-# needs user-space part https://github.com/wlhe/uvc-gadget
-
-if [ ! -d uvc-gadget ] ; then
- git clone https://github.com/wlhe/uvc-gadget
- cd uvc-gadget && make
- cd -
-fi
-
-
-# load module
-cd /sys/kernel/config/usb_gadget/ || modprobe libcomposite
-
-set -e
-#set -x
-
-CONFIGFS="/sys/kernel/config"
-GADGET="$CONFIGFS/usb_gadget"
-VID="0x0525"
-PID="0xa4a2"
-SERIAL="0123456789"
-MANUF=$(hostname)
-PRODUCT="UVC Gadget"
-
-USBFILE=/root/usbstorage.img
-
-BOARD=$(strings /proc/device-tree/model)
-
-case $BOARD in
- "Renesas Salvator-X board based on r8a7795 ES1.x")
- UDC_USB2=e6590000.usb
- UDC_USB3=ee020000.usb
-
- UDC_ROLE2=/sys/devices/platform/soc/ee080200.usb-phy/role
- UDC_ROLE2=/dev/null #Not needed - always peripheral
- UDC_ROLE3=/sys/devices/platform/soc/ee020000.usb/role
-
- UDC=$UDC_USB2
- UDC_ROLE=$UDC_ROLE2
- ;;
-
- "TI OMAP4 PandaBoard-ES")
- UDC=`ls /sys/class/udc` # Should be musb-hdrc.0.auto
- UDC_ROLE=/dev/null # Not needed - peripheral enabled
- ;;
-
- *)
- UDC=`ls /sys/class/udc` # will identify the 'first' UDC
- UDC_ROLE=/dev/null # Not generic
- ;;
-esac
-
-echo "Detecting platform:"
-echo " board : $BOARD"
-echo " udc : $UDC"
-
-create_msd() {
- # Example usage:
- # create_msd <target config> <function name> <image file>
- # create_msd configs/c.1 mass_storage.0 /root/backing.img
- CONFIG=$1
- FUNCTION=$2
- BACKING_STORE=$3
-
- if [ ! -f $BACKING_STORE ]
- then
- echo "\tCreating backing file"
- dd if=/dev/zero of=$BACKING_STORE bs=1M count=32 > /dev/null 2>&1
- mkfs.ext4 $USBFILE > /dev/null 2>&1
- echo "\tOK"
- fi
-
- echo "\tCreating MSD gadget functionality"
- mkdir functions/$FUNCTION
- echo 1 > functions/$FUNCTION/stall
- echo $BACKING_STORE > functions/$FUNCTION/lun.0/file
- echo 1 > functions/$FUNCTION/lun.0/removable
- echo 0 > functions/$FUNCTION/lun.0/cdrom
-
- ln -s functions/$FUNCTION configs/c.1
-
- echo "\tOK"
-}
-
-delete_msd() {
- # Example usage:
- # delete_msd <target config> <function name>
- # delete_msd config/c.1 uvc.0
- CONFIG=$1
- FUNCTION=$2
-
- echo "Removing Mass Storage interface : $FUNCTION"
- rm -f $CONFIG/$FUNCTION
- rmdir functions/$FUNCTION
- echo "OK"
-}
-
-create_uvc() {
- # Example usage:
- # create_uvc <target config> <function name>
- # create_uvc config/c.1 uvc.0
- CONFIG=$1
- FUNCTION=$2
-
- echo " Creating UVC gadget functionality : $FUNCTION"
- mkdir functions/$FUNCTION
- mkdir -p functions/$FUNCTION/streaming/uncompressed/u/360p
- cat <<EOF > functions/$FUNCTION/streaming/uncompressed/u/360p/dwFrameInterval
-666666
-1000000
-5000000
-EOF
- mkdir functions/$FUNCTION/streaming/header/h
- cd functions/$FUNCTION/streaming/header/h
- ln -s ../../uncompressed/u
- cd ../../class/fs
- ln -s ../../header/h
- cd ../../class/hs
- ln -s ../../header/h
- cd ../../../control
- mkdir header/h
- ln -s header/h class/fs
- ln -s header/h class/ss
- cd ../../../
- echo 2048 > functions/$FUNCTION/streaming_maxpacket
-
- ln -s functions/$FUNCTION configs/c.1
-}
-
-delete_uvc() {
- # Example usage:
- # delete_uvc <target config> <function name>
- # delete_uvc config/c.1 uvc.0
- CONFIG=$1
- FUNCTION=$2
-
- echo " Deleting UVC gadget functionality : $FUNCTION"
- rm $CONFIG/$FUNCTION
-
- rm functions/$FUNCTION/control/class/*/h
- rm functions/$FUNCTION/streaming/class/*/h
- rm functions/$FUNCTION/streaming/header/h/u
- rmdir functions/$FUNCTION/streaming/uncompressed/u/360p
- rmdir functions/$FUNCTION/streaming/uncompressed/u
- rmdir functions/$FUNCTION/streaming/header/h
- rmdir functions/$FUNCTION/control/header/h
- rmdir functions/$FUNCTION
-}
-
-case "$1" in
- start)
- echo "Creating the USB gadget"
- #echo "Loading composite module"
- #modprobe libcomposite
-
- echo "Creating gadget directory g1"
- mkdir -p $GADGET/g1
-
- cd $GADGET/g1
- if [ $? -ne 0 ]; then
- echo "Error creating usb gadget in configfs"
- exit 1;
- else
- echo "OK"
- fi
-
- echo "Setting Vendor and Product ID's"
- echo $VID > idVendor
- echo $PID > idProduct
- echo "OK"
-
- echo "Setting English strings"
- mkdir -p strings/0x409
- echo $SERIAL > strings/0x409/serialnumber
- echo $MANUF > strings/0x409/manufacturer
- echo $PRODUCT > strings/0x409/product
- echo "OK"
-
- echo "Creating Config"
- mkdir configs/c.1
- mkdir configs/c.1/strings/0x409
-
- echo "Creating functions..."
- #create_msd configs/c.1 mass_storage.0 $USBFILE
- create_uvc configs/c.1 uvc.0
- echo "OK"
-
-
- echo "Binding USB Device Controller"
- echo $UDC > UDC
- echo peripheral > $UDC_ROLE
- cat $UDC_ROLE
- echo "OK"
- ;;
-
- stop)
- echo "Stopping the USB gadget"
-
- set +e # Ignore all errors here on a best effort
-
- cd $GADGET/g1
-
- if [ $? -ne 0 ]; then
- echo "Error: no configfs gadget found"
- exit 1;
- fi
-
- echo "Unbinding USB Device Controller"
- grep $UDC UDC && echo "" > UDC
- echo "OK"
-
- delete_uvc configs/c.1 uvc.0
- #delete_msd configs/c.1 mass_storage.0
-
- echo "Clearing English strings"
- rmdir strings/0x409
- echo "OK"
-
- echo "Cleaning up configuration"
- rmdir configs/c.1/strings/0x409
- rmdir configs/c.1
- echo "OK"
-
- echo "Removing gadget directory"
- cd $GADGET
- rmdir g1
- cd /
- echo "OK"
-
- #echo "Disable composite USB gadgets"
- #modprobe -r libcomposite
- #echo "OK"
- ;;
- *)
- echo "Usage : $0 {start|stop}"
-esac
projects / linux-usb-otg / commitdiff