Finds out which kernel driver is being used to serve a given device file.

driverfor.sh

#!/usr/bin/env bash

# call as: <script name> <device file path>
# example: driverfor /dev/input/mouse0

lookup_driver_in_use_for_input_device() {
    device_file="$(echo $1 | awk '{gsub("/dev/", "", $1); print $1}')"
    module_file="$(realpath /sys/class/$device_file/device/device/driver/module)"

    echo $module_file | awk '{gsub("/sys/module/", "", $1); print $1}'
}

result="$(lookup_driver_in_use_for_input_device $1)"

echo "$result"