| # Copyright (c) 2011 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. |
| |
| import glob, logging, os, re |
| from autotest_lib.client.bin import test, utils |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.cros import power_status |
| |
| class power_ARMSettings(test.test): |
| version = 1 |
| |
| def run_once(self): |
| if not self._check_cpu_type(): |
| raise error.TestNAError('Unsupported CPU') |
| |
| status = power_status.get_status() |
| if status.linepower[0].online: |
| logging.info('AC Power is online') |
| self._on_ac = True |
| else: |
| logging.info('AC Power is offline') |
| self._on_ac = False |
| |
| failures = '' |
| |
| fail_count = self._verify_wifi_power_settings() |
| if fail_count: |
| failures += 'wifi_failures(%d) ' % fail_count |
| |
| fail_count = self._verify_usb_power_settings() |
| if fail_count: |
| failures += 'usb_failures(%d) ' % fail_count |
| |
| if failures: |
| raise error.TestFail(failures) |
| |
| |
| def _check_cpu_type(self): |
| cpuinfo = utils.read_file('/proc/cpuinfo') |
| |
| # Look for ARM |
| match = re.search(r'ARMv[4-7]', cpuinfo) |
| if match: |
| return True |
| |
| logging.info(cpuinfo) |
| return False |
| |
| |
| def _verify_wifi_power_settings(self): |
| if self._on_ac: |
| expected_state = 'off' |
| else: |
| expected_state = 'on' |
| |
| iwconfig_out = utils.system_output('iwconfig', retain_output=True) |
| match = re.search(r'Power Management:(.*)', iwconfig_out) |
| if match and match.group(1) == expected_state: |
| return 0 |
| |
| logging.info(iwconfig_out) |
| return 1 |
| |
| |
| def _verify_usb_power_settings(self): |
| if self._on_ac: |
| expected_state = 'on' |
| else: |
| expected_state = 'auto' |
| |
| dirs_path = '/sys/bus/usb/devices/*/power' |
| dirs = glob.glob(dirs_path) |
| if not dirs: |
| logging.info('USB power path not found') |
| return 1 |
| |
| errors = 0 |
| for dir in dirs: |
| level_file = os.path.join(dir, 'level') |
| if not os.path.exists(level_file): |
| logging.info('USB: power level file not found for %s', dir) |
| continue |
| |
| out = utils.read_one_line(level_file) |
| logging.debug('USB: path set to %s for %s', |
| out, level_file) |
| if out != expected_state: |
| logging.info(level_file) |
| errors += 1 |
| |
| return errors |
