| # Copyright (c) 2014 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 time |
| |
| import power_state |
| |
| |
| class beltinoPower(power_state.PowerStateDriver): |
| |
| """Driver for power_state for Beltino-class boards.""" |
| |
| # Time in seconds to allow the BIOS and EC to detect the |
| # 'rec_mode' signal after cold reset. |
| _RECOVERY_DETECTION_DELAY = 2.5 |
| |
| def _reset_cycle(self): |
| """Force a power cycle using cold reset.""" |
| self._cold_reset() |
| # AP isn't powered on after cold reset, so power it on. |
| self._interface.power_short_press() |
| |
| def _power_on_rec(self): |
| """Power on with recovery mode.""" |
| self._interface.set('rec_mode', self.REC_ON) |
| time.sleep(self._RECOVERY_DETECTION_DELAY) |
| self._reset_cycle() |
| time.sleep(self._RECOVERY_DETECTION_DELAY) |
| self._interface.set('rec_mode', self.REC_OFF) |
| |
| def _power_on_normal(self): |
| """Power on with in normal mode, i.e., no recovery.""" |
| self._interface.power_short_press() |
| |
| def _power_on(self, rec_mode): |
| if rec_mode == self.REC_ON: |
| self._power_on_rec() |
| else: |
| self._power_on_normal() |
| |
| def _power_off(self): |
| self._interface.power_long_press() |
