| # Copyright 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. |
| |
| """This test remotely emulates noisy HPD line when connecting to an external |
| display in extended mode using the Chameleon board.""" |
| |
| import logging |
| from autotest_lib.server.cros.chameleon import chameleon_test |
| |
| |
| class display_HotPlugNoisy(chameleon_test.ChameleonTest): |
| """Noisy display HPD test. |
| |
| This test talks to a Chameleon board and a DUT to set up, run, and verify |
| DUT behavior in response to noisy HPD line. |
| """ |
| version = 1 |
| PLUG_CONFIGS = [ |
| # (pulse_width_us, pulse_count, plugged_before_noise, |
| # plugged_after_noise) |
| |
| (100, 10000, False, False), |
| (100, 10000, False, True), |
| (100, 10000, True, False), |
| (100, 10000, True, True), |
| (1, 1000000, True, True), |
| ] |
| |
| |
| def run_once(self, host, test_mirrored=False): |
| width, height = resolution = self.chameleon_port.get_resolution() |
| logging.info('See the display on Chameleon: port %d (%s) %dx%d', |
| self.chameleon_port.get_connector_id(), |
| self.chameleon_port.get_connector_type(), |
| width, height) |
| # Keep the original connector name, for later comparison. |
| expected_connector = self.display_client.get_connector_name() |
| logging.info('See the display on DUT: %s', expected_connector) |
| |
| self.set_mirrored(test_mirrored) |
| errors = [] |
| for (pulse_width_us, pulse_count, plugged_before_noise, |
| plugged_after_noise) in self.PLUG_CONFIGS: |
| logging.info('TESTING THE CASE: %s > noise > %s', |
| 'plug' if plugged_before_noise else 'unplug', |
| 'plug' if plugged_after_noise else 'unplug') |
| |
| self.set_plug(plugged_before_noise) |
| |
| self.check_external_display_connector( |
| expected_connector if plugged_before_noise else None) |
| |
| self.chameleon_port.fire_hpd_pulse(pulse_width_us, repeat_count= |
| pulse_count, end_level=plugged_after_noise) |
| |
| self.check_external_display_connector( |
| expected_connector if plugged_after_noise else None) |
| |
| if plugged_after_noise: |
| test_name = 'SCREEN-%dx%d-%c-N-P' % ( |
| width, height, 'P' if plugged_before_noise else 'U') |
| self.load_test_image_and_check( |
| test_name, resolution, |
| under_mirrored_mode=test_mirrored, error_list=errors) |
| |
| self.raise_on_errors(errors) |
