| # Copyright 2016 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 fw_wp_state |
| |
| |
| class fwWpServoflex(fw_wp_state.FwWpStateDriver): |
| """Driver for fw_wp_state for boards connecting servoflex's.""" |
| |
| def __init__(self, interface, params): |
| """Constructor. |
| |
| Args: |
| interface: driver interface object |
| params: dictionary of params |
| """ |
| super(fwWpServoflex, self).__init__(interface, params) |
| self._fw_wp_vref = self._params.get('fw_wp_vref', 'pp1800') |
| |
| def _force_on(self): |
| """Force the firmware to write-protected.""" |
| self._interface.set('fw_wp_vref', self._fw_wp_vref) |
| self._interface.set('fw_wp_en', 'on') |
| self._interface.set('fw_wp', 'on') |
| |
| def _force_off(self): |
| """Force the firmware to not write-protected.""" |
| self._interface.set('fw_wp_vref', self._fw_wp_vref) |
| self._interface.set('fw_wp_en', 'on') |
| self._interface.set('fw_wp', 'off') |
| |
| def _reset(self): |
| """Reset the firmware write-protection state to the system value.""" |
| self._interface.set('fw_wp_en', 'off') |
| |
| def _get_state(self): |
| """Get the firmware write-protection state.""" |
| fw_wp_en = (self._interface.get('fw_wp_en') == 'on') |
| fw_wp = (self._interface.get('fw_wp') == 'on') |
| if fw_wp_en: |
| return self._STATE_FORCE_ON if fw_wp else self._STATE_FORCE_OFF |
| else: |
| return self._STATE_ON if fw_wp else self._STATE_OFF |
