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      1 # Copyright (c) 2013 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 logging
      6 
      7 import pm_errors
      8 import register_machine
      9 
     10 from autotest_lib.client.cros.cellular import mm1_constants
     11 
     12 class RegisterCdmaMachine(register_machine.RegisterMachine):
     13     """
     14     RegisterCdmaMachine handles the CDMA specific state transitions involved in
     15     bringing the modem to the REGISTERED state.
     16 
     17     """
     18     def Cancel(self):
     19         """
     20         Cancel the current machine.
     21 
     22         Overwritten from parent class.
     23         """
     24         logging.info('RegisterCdmaMachine: Canceling register.')
     25         super(RegisterCdmaMachine, self).Cancel()
     26         state = self._modem.Get(mm1_constants.I_MODEM, 'State')
     27         reason = mm1_constants.MM_MODEM_STATE_CHANGE_REASON_USER_REQUESTED
     28         if state == mm1_constants.MM_MODEM_STATE_SEARCHING:
     29             logging.info('RegisterCdmaMachine: Setting state to ENABLED.')
     30             self._modem.ChangeState(mm1_constants.MM_MODEM_STATE_ENABLED,
     31                                     reason)
     32             self._modem.SetRegistrationState(
     33                 mm1_constants.MM_MODEM_CDMA_REGISTRATION_STATE_UNKNOWN)
     34         self._modem.register_step = None
     35         if self._raise_cb:
     36             self._raise_cb(
     37                     pm_errors.MMCoreError(pm_errors.MMCoreError.CANCELLED,
     38                                           'Cancelled'))
     39 
     40 
     41     def _GetModemStateFunctionMap(self):
     42         return {
     43             mm1_constants.MM_MODEM_STATE_ENABLED:
     44                     RegisterCdmaMachine._HandleEnabledState,
     45             mm1_constants.MM_MODEM_STATE_SEARCHING:
     46                     RegisterCdmaMachine._HandleSearchingState
     47         }
     48 
     49 
     50     def _HandleEnabledState(self):
     51         logging.info('RegisterCdmaMachine: Modem is ENABLED.')
     52         logging.info('RegisterCdmaMachine: Setting state to SEARCHING.')
     53         self._modem.ChangeState(
     54                 mm1_constants.MM_MODEM_STATE_SEARCHING,
     55                 mm1_constants.MM_MODEM_STATE_CHANGE_REASON_USER_REQUESTED)
     56         return True
     57 
     58 
     59     def _HandleSearchingState(self):
     60         logging.info('RegisterCdmaMachine: Modem is SEARCHING.')
     61         network = self._modem.GetHomeNetwork()
     62         if not network:
     63             logging.info('RegisterCdmaMachine: No network available.')
     64             logging.info('RegisterCdmaMachine: Setting state to ENABLED.')
     65             self._modem.ChangeState(mm1_constants.MM_MODEM_STATE_ENABLED,
     66                 mm1_constants.MM_MODEM_STATE_CHANGE_REASON_UNKNOWN)
     67             if self._raise_cb:
     68                 self._raise_cb(
     69                         pm_errors.MMMobileEquipmentError(
     70                                 pm_errors.MMMobileEquipmentError.NO_NETWORK,
     71                                 'No networks were found to register.'))
     72             self._modem.register_step = None
     73             return False
     74 
     75         logging.info(
     76             'RegisterMachineCdma: Registering to network: ' + str(network))
     77         logging.info('RegisterMachineCdma: Setting state to REGISTERED.')
     78         self._modem.SetRegistered(network)
     79         self._modem.ChangeState(
     80                 mm1_constants.MM_MODEM_STATE_REGISTERED,
     81                 mm1_constants.MM_MODEM_STATE_CHANGE_REASON_USER_REQUESTED)
     82         self._modem.register_step = None
     83         if self._return_cb:
     84             self._return_cb()
     85         return False
     86