scripts/chromeos-touch-update.conf

# Copyright (c) 2013 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.

description     "Touch firmware and config updater for Chromebooks"
author          "chromium-os-dev@chromium.org"

# This job has no main script so that it only runs once at boot.
# This will block the start of the first UI in order to do the fw/config
# update.
start on starting ui

pre-start script
  for dev in "/sys/bus/i2c/devices"/*; do
    local driver_name="$(readlink -f ${dev}/driver | xargs basename)"
    local device_name="$(cat ${dev}/name)"

    if [ "${driver_name}" = "i2c_hid" ]; then
      local hidpath="$(echo ${dev}/*:*:*.*)"
      local hidname="hid-$(echo ${hidpath##*/} | awk -F'[:.]' '{ print $2 "_" $3 }')"

      # make sure the HID driver successfully bound to the device
      if [ ! -d "${hidpath}" ]; then
        continue
      fi

      /opt/google/touch/scripts/chromeos-synaptics-touch-firmware-update.sh -d "${hidname}" -r ||
        logger -t "$UPSTART_JOB" "${dev_name} firmware update failed."
      continue
    fi

    # Skip over any bogus devices
    if [ ! -e "${dev}/update_fw" ]; then
      continue
    fi

    case "${driver_name}" in
    raydium_ts)
      /opt/google/touch/scripts/chromeos-raydium-touch-firmware-update.sh \
        -d "${device_name}" -r ||
        logger -t "$UPSTART_JOB" "${device_name} firmware update failed."
      ;;
    cyapa)
      /opt/google/touch/scripts/chromeos-cyapa-touch-firmware-update.sh \
        -d "${device_name}" -r ||
        logger -t "$UPSTART_JOB" "${device_name} firmware update failed."
      ;;
    elan_i2c)
      /opt/google/touch/scripts/chromeos-elan-touch-firmware-update.sh \
        -d "${device_name}" -n elan_i2c -r ||
        logger -t "$UPSTART_JOB" "${device_name} firmware update failed."
      ;;
    elants_i2c)
      /opt/google/touch/scripts/chromeos-elan-touch-firmware-update.sh \
        -d "${device_name}" -n elants_i2c -r ||
        logger -t "$UPSTART_JOB" "${device_name} firmware update failed."
      ;;
    mip4_ts)
      /opt/google/touch/scripts/chromeos-melfas-touch-firmware-update.sh \
        -d "${device_name}" -r ||
        logger -t "$UPSTART_JOB" "${device_name} firmware update failed."
      ;;
    wdt87xx_i2c)
      /opt/google/touch/scripts/chromeos-weida-touch-firmware-update.sh \
        -d "${device_name}" -r ||
        logger -t "$UPSTART_JOB" "${device_name} firmware update failed."
      /opt/google/touch/scripts/chromeos-weida-touch-config-update.sh \
        -d "${device_name}" ||
        logger -t "$UPSTART_JOB" "${device_name} config update failed."
      ;;
    atmel_mxt_ts)
      # Both Atmel screens and pads use the same driver.  Use the device name
      # to differentiate the two
      local fw_name=""

      case "${device_name}" in
      *tp*|ATML0000*)
        fw_name="maxtouch-tp.fw"
        ;;
      *ts*|ATML0001*)
        fw_name="maxtouch-ts.fw"
        ;;
      *)
        die "No valid touch device name ${device_name}"
        ;;
      esac

      # Atmel mXT touchpad firmware and config must be updated in tandem.
      /opt/google/touch/scripts/chromeos-atmel-touch-firmware-update.sh \
        -d "${device_name}" -r -n "${fw_name}" ||
        logger -t "$UPSTART_JOB" "${device_name} firmware update failed."
      /opt/google/touch/scripts/chromeos-atmel-touch-config-update.sh \
        -d "${device_name}" ||
        logger -t "$UPSTART_JOB" "${device_name} config update failed."
      ;;
    esac
  done
end script