1 # Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import errno, logging, os, shutil, time 6 from autotest_lib.client.bin import test, utils 7 from autotest_lib.client.common_lib import error 8 from autotest_lib.client.cros import rtc 9 from autotest_lib.client.cros.power import sys_power 10 11 12 def read_rtc_wakeup(rtc_device): 13 """ 14 Read the wakeup setting for for the RTC device. 15 """ 16 sysfs_path = '/sys/class/rtc/%s/device/power/wakeup' % rtc_device 17 return file(sysfs_path).read().strip() 18 19 20 def read_rtc_wakeup_count(rtc_device): 21 """ 22 Read the current wakeup count for the RTC device. 23 """ 24 sysfs_path = '/sys/class/rtc/%s/device/power/wakeup_count' % rtc_device 25 return int(file(sysfs_path).read()) 26 27 28 def fire_wakealarm(rtc_device): 29 """ 30 Schedule a wakealarm and wait for it to fire. 31 """ 32 rtc.set_wake_alarm('+1', rtc_device) 33 time.sleep(2) 34 35 36 class power_WakeupRTC(test.test): 37 """Test RTC wake events.""" 38 39 version = 1 40 41 def run_once(self): 42 for rtc_device in rtc.get_rtc_devices(): 43 self.run_once_rtc(rtc_device) 44 45 def run_once_rtc(self, rtc_device): 46 logging.info('testing rtc device %s', rtc_device) 47 48 # Test that RTC wakeup is enabled 49 rtc_wakeup = read_rtc_wakeup(rtc_device) 50 if rtc_wakeup != 'enabled': 51 raise error.TestError('RTC wakeup is not enabled: %s' % rtc_device) 52 53 # Test that RTC can generate wake events 54 old_sys_wakeup_count = sys_power.read_wakeup_count() 55 old_rtc_wakeup_count = read_rtc_wakeup_count(rtc_device) 56 fire_wakealarm(rtc_device) 57 new_sys_wakeup_count = sys_power.read_wakeup_count() 58 new_rtc_wakeup_count = read_rtc_wakeup_count(rtc_device) 59 if new_rtc_wakeup_count == old_rtc_wakeup_count: 60 raise error.TestFail( 61 'RTC alarm should increase RTC wakeup_count: %s' 62 % rtc_device) 63 if new_sys_wakeup_count == old_sys_wakeup_count: 64 raise error.TestFail( 65 'RTC alarm should increase system wakeup_count: %s' 66 % rtc_device) 67
