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Diffstat (limited to 'harnesses/host_controller/utils/usb/usb_utils.py')
| -rw-r--r-- | harnesses/host_controller/utils/usb/usb_utils.py | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/harnesses/host_controller/utils/usb/usb_utils.py b/harnesses/host_controller/utils/usb/usb_utils.py deleted file mode 100644 index 5c42c7b..0000000 --- a/harnesses/host_controller/utils/usb/usb_utils.py +++ /dev/null @@ -1,112 +0,0 @@ -# -# Copyright (C) 2018 The Android Open Source Project -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. -# - -import fcntl -import logging -import os - -from vts.utils.python.common import cmd_utils - -# _IO('U', 20) -USBDEVFS_RESET = ord("U") << 8 | 20 - - -def GetDevicesUSBFilePath(): - """Sweeps through connected USB device info and maps serial number to them. - - Returns: - A dict, serial numbers of the devices as the key, device file path - corresponding to the serial number as the value. - """ - ret = {} - - sh_stdout, sh_stderr, ret_code = cmd_utils.ExecuteOneShellCommand("which udevadm") - if ret_code != 0: - logging.error("`udevadm` doesn't exist on the host; " - "please install 'udev' pkg before retrying.") - return ret - - sh_stdout, _, _ = cmd_utils.ExecuteOneShellCommand( - "find /sys/bus/usb/devices/usb*/ -name dev") - lines = sh_stdout.split() - for line in lines: - syspath = os.path.dirname(line) - devname, _, _ = cmd_utils.ExecuteOneShellCommand( - "udevadm info -q name -p %s" % syspath) - if devname.startswith("bus/"): - serial, _, _ = cmd_utils.ExecuteOneShellCommand( - "udevadm info -q property --export -p %s | grep ID_SERIAL_SHORT" - % syspath) - if serial: - device_serial = serial.split("=")[1].strip().strip("'") - ret[device_serial] = os.path.join("/dev", devname.strip()) - - return ret - - -def ResetDeviceUsb(dev_file_path): - """Invokes ioctl that resets the USB device on the given file path. - - Args: - dev_file_path: string, abs path to the device file - - Returns: - True if successful, False otherwise. - """ - try: - with open(dev_file_path, "wb") as usb_fd: - fcntl.ioctl(usb_fd, USBDEVFS_RESET, 0) - except IOError as e: - logging.exception(e) - return False - - return True - - -def ResetUsbDeviceOfSerial(serial): - """Resets a USB device file corresponding to the given serial. - - Args: - serial: string, serial number of the device whose USB device file - will reset. - - Returns: - True if successful, False otherwise. - """ - device_file_path = GetDevicesUSBFilePath() - if serial in device_file_path: - logging.error( - "Device %s not responding. Resetting device file %s.", serial, - device_file_path[serial]) - return ResetDeviceUsb(device_file_path[serial]) - return False - - -def ResetUsbDeviceOfSerial_Callback(*args): - """Wrapper of the ResetUsbDeviceOfSerial(), for handling the *args. - - Args: - args: tuple of arguments, expected to have the serial number of - the devices as the first element. - - Returns: - True if successful, False otherwise. - """ - try: - return ResetUsbDeviceOfSerial(args[0]) - except IndexError as e: - logging.exception(e) - return False
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