diff options
| -rw-r--r-- | extra/usb_serial/51-google-serial-fallback.rules | 6 | ||||
| -rwxr-xr-x | extra/usb_serial/add_usb_serial_id | 32 | ||||
| -rwxr-xr-x | extra/usb_serial/install | 83 |
3 files changed, 114 insertions, 7 deletions
diff --git a/extra/usb_serial/51-google-serial-fallback.rules b/extra/usb_serial/51-google-serial-fallback.rules new file mode 100644 index 0000000000..5f43e58e30 --- /dev/null +++ b/extra/usb_serial/51-google-serial-fallback.rules @@ -0,0 +1,6 @@ +# +# Add USB VID/PID for usb-serial compatible CCD devices. This is a fallback +# rule that can be used if the raiden module can't be built, or used for some +# reason. +# +SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="18d1", ENV{ID_USB_INTERFACES}=="*:ff5001:*", RUN+="add_usb_serial_id $attr{idVendor} $attr{idProduct}" diff --git a/extra/usb_serial/add_usb_serial_id b/extra/usb_serial/add_usb_serial_id new file mode 100755 index 0000000000..ef8336afdc --- /dev/null +++ b/extra/usb_serial/add_usb_serial_id @@ -0,0 +1,32 @@ +#!/bin/sh -e +# +# Copyright 2016 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. +# +# Add a USB VID:PID device ID to the usbserial list of handled devices + +if [ $# -ne 2 ]; then + echo "" + echo "Usage: $0 <VID> <PID>" + echo "" + echo "Add a USB VID:PID device identification pair to the list of devices" + echo "that usbserial will recognize. This script ensures that a device is" + echo "not added more than once." + echo "" + exit 1 +fi + +# +# Firts ensure that the usbserial module is loaded. This is required as there +# may be no other USB serial adaptor connected yet. +# +modprobe usbserial + +device_id="$1 $2" +file="/sys/bus/usb-serial/drivers/generic/new_id" + +# +# Only add the device ID pair if it isn't already in the ID list. +# +grep -q "$device_id" $file || echo $device_id > $file diff --git a/extra/usb_serial/install b/extra/usb_serial/install index f802f10af4..eba1d2ac83 100755 --- a/extra/usb_serial/install +++ b/extra/usb_serial/install @@ -1,19 +1,88 @@ -#!/bin/sh +#!/bin/sh -e +# +# Copyright 2016 The Chromium OS Authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. +# +# Build and install raiden module and udev rules -set -e +bold=$(tput bold) +normal=$(tput sgr0) -make modules +error() { + echo "${bold}Install failed${normal}" +} -# Install the new module and update dependency and alias information -sudo make modules_install -sudo depmod -a +trap "error $LINENO" ERR +fallback=false + +if [ "$1" = "--fallback" ]; then + fallback=true + shift +fi + +if [ $# -ne 0 ]; then + echo "" + echo "Usage: ${bold}$0${normal} [--fallback]" + echo "" + echo "Install Raiden kernel module and udev rules for working with Case" + echo "Closed Debug enabled devices." + echo "" + echo "${bold}--fallback${normal}" + echo " Install udev rules to use usbserial directly without installing" + echo " the raiden module. This can be used when the raiden module fails" + echo " to build, or can not be used for other reasons." + echo "" + echo " The fallback solution will generate extra /dev/ttyUSB? entries" + echo " for the SPI and possibly other CCD bridges. These should be" + echo " ignored by you. Flashrom is smart enough to detach the kernel" + echo " driver from the SPI bridge, so they will not interfere with" + echo " flashing new firmware images over CCD." + echo "" + exit 1 +fi + +if [ "$fallback" = "false" ]; then + # + # The normal path builds and installs the raiden module + # + { + # + # Don't build the module as root so it's easier to clean up after + # + make modules && + + # + # Install the new module and update dependency and alias information + # + sudo make modules_install && + sudo depmod -a + } || { + echo $bold + echo "Building and/or installing the raiden module failed, you may" + echo "want to use the --fallback option." + echo $normal + exit 1; + } +else + # + # The fallback path installs the fallback udev rule and its helper script. + # + sudo install -m644 51-google-serial-fallback.rules /etc/udev/rules.d + sudo install add_usb_serial_id /lib/udev +fi + +# # Install the udev rule for creating /dev/google symlinks. -sudo cp 51-google-serial.rules /etc/udev/rules.d +# +sudo install -m644 51-google-serial.rules /etc/udev/rules.d +# # Trigger udev to create the symlinks for any attached devices that have the # Google Vendor ID. Limiting triggering like this prevents unwanted resetting # of some device state, even with the change action specified. +# for syspath in $(dirname $(grep -rxl --include=idVendor 18d1 /sys/devices)); do sudo udevadm trigger --action=change --parent-match=${syspath} done |