| #!/bin/sh |
| # Copyright 2018 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # This script reads panel vendor_id and product_id to determin wacom touch |
| # screen config and return wacom hardware_id to caller |
| # return value: wacom hardware_id |
| |
| . /usr/share/misc/shflags |
| |
| # Not used; but caller provides it. |
| DEFINE_string 'device' '' "i2c device name" 'd' |
| |
| # Parse command line. |
| FLAGS "$@" || exit 1 |
| eval set -- "${FLAGS_ARGV}" |
| |
| # Wacom AES doesn't support power-cut-tolerant ID. |
| # Arcada reads panel vendor_id and product_id to determine wacom firmware. |
| main() { |
| local vendor_id |
| local product_id |
| local hardware_id |
| |
| for path in /sys/class/drm/*eDP*/edid; do |
| # Check path is exist, otherwise hexdump hits error |
| if [ -e "${path}" ]; then |
| # EDID 0x8-0x9 is Manufacturer ID |
| vendor_id="$(hexdump -n 0xc "${path}" | awk '{print $6}' | sed '/^\s*$/d')" |
| # EDID 0xa-0xb is Manufacturer product code |
| product_id="$(hexdump -n 0xc "${path}" | awk '{print $7}' | sed '/^\s*$/d')" |
| if [ -n "${product_id}" ]; then |
| hardware_id="${vendor_id}-${product_id}" |
| fi |
| fi |
| done |
| |
| case "${hardware_id}" in |
| "af06-632d") # af06(AUO) |
| echo "2d1f_4944" # wacom hardware_id = VID_PID |
| ;; |
| "e430-05dc") # e430(LGD) |
| echo "2d1f_4945" # wacom hardware_id = VID_PID |
| ;; |
| "ae0d-1382") # ae0d(INO) |
| echo "2d1f_4946" # wacom hardware_id = VID_PID |
| ;; |
| *) |
| ## Unknown hardware_id, don't ouput anything. |
| esac |
| } |
| |
| main "$@" |
