usbus.sh

#!/bin/sh

# TODO:
# lookup missing ids from /usr/share/hwdata/usb.ids
# lookup bus controller ids (readlink -f . /.. on the bus controller)
# ... and display their PCI ID when available
# colorize output to highlight bus speeds maybe?
# add emojis to indicate device speeds?

drawtree() {
  local INDENT=$1
  local DEV=$2
  [ -f $DEV/idVendor ] || return
  DESC='???'
  if [ -f $DEV/product ]; then
    DESC="$(cat $DEV/product)"
  else
    DESC=$(lsusb -d $(cat $DEV/idVendor):$(cat $DEV/idProduct) | head -n1 | cut -d" " -f7-)
  fi
  if [ -f $DEV/manufacturer ]; then
    DESC="$(cat $DEV/manufacturer) $DESC"
  fi
  PORTS="(leaf)"
  if [ -f $DEV/maxchild ]; then
    MAXCHILD=$(cat $DEV/maxchild)
    if [ "$MAXCHILD" != 0 ]; then
      PORTS="($MAXCHILD ports)"
    fi
  fi
  # Special case for USB roots: try to show the matching PCI device
  case $DEV in
    usb*)
      SYSDEV=$(find /sys/devices -name $DEV)
      PCIDEV=$(basename $(dirname $SYSDEV) | cut -d: -f2-)
      DESC=$(lspci -m | grep ^$PCIDEV | cut --delimiter='"' --fields=4,6 --output-delimiter=" ")
      ;;
    esac
  printf "%${INDENT}s- %s|%s:%s|%s|%s|%s|%s\n" \
    "" \
    $DEV \
    $(cat $DEV/idVendor) \
    $(cat $DEV/idProduct) \
    $(cat $DEV/version) \
    $(cat $DEV/speed) \
    "$PORTS" \
    "$DESC" \
    #
  cd $DEV
  for SUB in [1-9]*; do
    drawtree $((INDENT+2)) $SUB
  done
  cd ..
}
cd /sys/bus/usb/devices
{
for BUS in usb*; do
  drawtree 0 $BUS
done
} | column -s '|' -t