| # Copyright (c) 2013 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. |
| """Tests control of OMAP Muxes for beaglebone devices.""" |
| |
| import __builtin__ |
| import mox |
| import os |
| import unittest |
| |
| import bbmux_controller |
| |
| |
| FAKE_MUX_FILE = 'mux_file' |
| FAKE_MUX_FILE_PATH = '/sys/kernel/debug/omap_mux/mux_file' |
| FAKE_MUX_FILE_CONTENTS = ('signals: gpmc_a9 | mii2_rxd2 | rgmii2_rd2 | ' |
| 'mmc2_dat7 | NA | NA | mcasp0_fsx | gpio1_25') |
| MUX_MODE = '0x37' |
| EXPECTED_PIN_NAME_MAP = {'signals:' : 'mux_file', |
| 'gpmc_a9' : 'mux_file', |
| 'mii2_rxd2' : 'mux_file', |
| 'rgmii2_rd2' : 'mux_file', |
| 'mmc2_dat7' : 'mux_file', |
| 'NA' : 'mux_file', |
| 'mcasp0_fsx' : 'mux_file', |
| 'gpio1_25' : 'mux_file'} |
| |
| EXPECTED_PIN_MODE_MAP = {'signals:' : -1, |
| 'gpmc_a9' : 0, |
| 'mii2_rxd2' : 1, |
| 'rgmii2_rd2' : 2, |
| 'mmc2_dat7' : 3, |
| 'NA' : 5, |
| 'mcasp0_fsx' : 6, |
| 'gpio1_25' : 7} |
| |
| |
| class TestBBmuxController(mox.MoxTestBase): |
| |
| |
| def setUp(self): |
| super(TestBBmuxController, self).setUp() |
| self.mox.StubOutWithMock(__builtin__, 'open') |
| |
| def testInitialization(self): |
| bbmux_controller.os = self.mox.CreateMockAnything() |
| bbmux_controller.os.path = self.mox.CreateMockAnything() |
| bbmux_controller.os.listdir(bbmux_controller.MUX_ROOT).AndReturn( |
| [FAKE_MUX_FILE]) |
| bbmux_controller.os.path.join(bbmux_controller.MUX_ROOT, |
| FAKE_MUX_FILE).MultipleTimes().AndReturn( |
| FAKE_MUX_FILE_PATH) |
| bbmux_controller.os.path.isdir(mox.IgnoreArg()).MultipleTimes().AndReturn( |
| False) |
| mux_file = self.mox.CreateMockAnything() |
| mux_file.__enter__().AndReturn([FAKE_MUX_FILE_CONTENTS]) |
| mux_file.__exit__(mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg()) |
| open(FAKE_MUX_FILE_PATH, 'r').AndReturn(mux_file) |
| self.mox.ReplayAll() |
| mux_controller = bbmux_controller.BBmuxController() |
| self.assertEquals(EXPECTED_PIN_NAME_MAP, mux_controller._pin_name_map) |
| self.assertEquals(EXPECTED_PIN_MODE_MAP, mux_controller._pin_mode_map) |
| |
| def _writeToMuxFileHelper(self): |
| mux_file = self.mox.CreateMockAnything() |
| open(FAKE_MUX_FILE_PATH, 'w').AndReturn(mux_file) |
| mux_file.__enter__().AndReturn(mux_file) |
| mux_file.write(MUX_MODE) |
| mux_file.__exit__(mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg()) |
| |
| def testSetPinMode(self): |
| """Test Selecting and setting a pin.""" |
| self._writeToMuxFileHelper() |
| self.mox.ReplayAll() |
| # Since testInitialization ran first, BBmuxController should not initialize |
| # its pin maps as they are class variables. |
| mux_controller = bbmux_controller.BBmuxController() |
| mux_controller.set_pin_mode('gpio1_25', 0x3) |
| |
| def testSetMuxFile(self): |
| """Test Selecting and setting a pin.""" |
| self._writeToMuxFileHelper() |
| self.mox.ReplayAll() |
| # Since testInitialization ran first, BBmuxController should not initialize |
| # its pin maps as they are class variables. |
| mux_controller = bbmux_controller.BBmuxController() |
| mux_controller.set_muxfile(FAKE_MUX_FILE, 0x3, 0x7) |
| |
| if __name__ == '__main__': |
| unittest.main() |
