gjdwebserver-overlay/app-mobilephone/pinephone-meta/files/pinephone-usb-gadget.sh

92 lines
2.5 KiB
Bash
Raw Normal View History

2021-10-03 17:58:12 +02:00
#!/bin/sh
CONFIGFS=/sys/kernel/config/usb_gadget/g1
USB_VENDORID="0x1D6B" # Linux Foundation
USB_PRODUCTID="0x0104" # Multifunction composite gadget
USB_MANUF="Manjaro"
USB_PRODUCT="Manjaro"
USB_SERIAL=`cat /etc/machine-id`
setup() {
# Don't do anything if the USB gadget already exists
[ -d $CONFIGFS ] && exit 0
# Required to make a composite gadget
modprobe libcomposite
# Create all required directories
echo "Creating the USB gadget..."
mkdir -p $CONFIGFS
mkdir -p $CONFIGFS/strings/0x409
mkdir -p $CONFIGFS/configs/c.1
mkdir -p $CONFIGFS/configs/c.1/strings/0x409
# Setup IDs and strings
echo "Setting up gadget strings..."
echo $USB_VENDORID > $CONFIGFS/idVendor
echo $USB_PRODUCTID > $CONFIGFS/idProduct
echo $USB_MANUF > $CONFIGFS/strings/0x409/manufacturer
echo $USB_PRODUCT > $CONFIGFS/strings/0x409/product
echo $USB_SERIAL > $CONFIGFS/strings/0x409/serialnumber
# Create ECM (ethernet) function
echo "Adding ECM function..."
mkdir $CONFIGFS/functions/ecm.usb0
# TODO: create RNDIS function for Windows compatibility
# Create MTP using FunctionFS
echo "Adding MTP function using FunctionFS..."
mkdir $CONFIGFS/functions/ffs.mtp
# Create configuration
echo "Creating gadget configuration..."
echo "Ethernet + MTP" > $CONFIGFS/configs/c.1/strings/0x409/configuration
ln -s $CONFIGFS/functions/ecm.usb0 $CONFIGFS/configs/c.1
ln -s $CONFIGFS/functions/ffs.mtp $CONFIGFS/configs/c.1
# Mount the MTP FunctionFS
echo "Mounting FunctionFS..."
mkdir -p /dev/ffs-mtp
mount -t functionfs mtp /dev/ffs-mtp
}
start() {
echo "Enabling the USB gadget..."
sleep 1
UDC=`ls /sys/class/udc`
echo "$UDC" > $CONFIGFS/UDC
}
reset() {
echo "Removing the USB gadget..."
# Remove USB gadget
if [ -d $CONFIGFS ]; then
echo "Removing gadget configuration..."
rm $CONFIGFS/configs/c.1/ffs.mtp
rm $CONFIGFS/configs/c.1/ecm.usb0
rmdir $CONFIGFS/configs/c.1/strings/0x409/
rmdir $CONFIGFS/configs/c.1/
rmdir $CONFIGFS/functions/ffs.mtp
rmdir $CONFIGFS/functions/ecm.usb0
rmdir $CONFIGFS/strings/0x409/
rmdir $CONFIGFS
fi
# Unmount FunctionFS and delete its mount point
if [ -d /dev/ffs-mtp ]; then
echo "Unmounting FunctionFS..."
umount /dev/ffs-mtp
rmdir /dev/ffs-mtp
fi
}
case "$1" in
reset) reset ;;
setup) setup ;;
start) start ;;
*) ;;
esac