bin: add script that resets a usb device given vendor/product id

Mainly used to reset xbox controller after suspend.

diff --git a/bin/reset-usb b/bin/reset-usb
new file mode 100755 (executable)
index 0000000..c392110
--- /dev/null
+++ b/bin/reset-usb
@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+
+version="0.1"
+
+function usage()
+{
+    echo "Usage :  $0 [options] [<idVendor>:]<idProduct>
+
+    Reset usb device identified by idVendor:idProduct.
+
+    Options:
+    -h,--help       Display this message
+    -v,--version    Display script version"
+}
+
+function check_ids()
+{
+    local syspath=$1
+    [[ -n $idVendor && "$idVendor" != $(cat $syspath/idVendor 2>/dev/null) ]] && return 1
+    [[ -n $idProduct && "$idProduct" != $(cat $syspath/idProduct 2>/dev/null) ]] && return 1
+    return 0
+}
+
+function main()
+{
+    for syspath in /sys/bus/usb/devices/*; do
+        if ! check_ids $syspath; then
+            continue
+        fi
+
+        echo "Resetting '$syspath'"
+        echo 0 | sudo tee $syspath/authorized >/dev/null
+        echo 1 | sudo tee $syspath/authorized >/dev/null
+    done
+}
+
+# Parse arguments
+declare -a args
+while [[ $# -gt 0 ]]; do
+    opt="$1"
+
+    case $opt in
+        -h|--help)     usage; exit 0 ;;
+        -v|--version)  echo "$0 -- Version $version"; exit 0 ;;
+        -* )
+            echo -e "\n  Option does not exist : $opt\n"
+            usage; exit 1 ;;
+
+        *) args+=("$opt"); shift ;;
+    esac
+done
+
+if [[ ${#args[@]} != 1 ]]; then
+    usage
+    exit 1
+fi
+
+if [[ ${args[0]} =~ ([^:]+):([^:]+) ]]; then
+    idVendor=${BASH_REMATCH[1]}
+    idProduct=${BASH_REMATCH[2]}
+else
+    idProduct=${args[0]}
+fi
+
+sudo -v
+main