1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2022 Maxime Ripard <mripard@kernel.org> 4 */ 5 6 #include <kunit/test.h> 7 8 #include <drm/drm_connector.h> 9 #include <drm/drm_edid.h> 10 #include <drm/drm_drv.h> 11 #include <drm/drm_modes.h> 12 #include <drm/drm_modeset_helper_vtables.h> 13 #include <drm/drm_probe_helper.h> 14 15 #include "drm_kunit_helpers.h" 16 17 struct drm_client_modeset_test_priv { 18 struct drm_device *drm; 19 struct drm_connector connector; 20 }; 21 22 static int drm_client_modeset_connector_get_modes(struct drm_connector *connector) 23 { 24 return drm_add_modes_noedid(connector, 1920, 1200); 25 } 26 27 static const struct drm_connector_helper_funcs drm_client_modeset_connector_helper_funcs = { 28 .get_modes = drm_client_modeset_connector_get_modes, 29 }; 30 31 static const struct drm_connector_funcs drm_client_modeset_connector_funcs = { 32 }; 33 34 static int drm_client_modeset_test_init(struct kunit *test) 35 { 36 struct drm_client_modeset_test_priv *priv; 37 int ret; 38 39 priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL); 40 KUNIT_ASSERT_NOT_NULL(test, priv); 41 42 test->priv = priv; 43 44 priv->drm = drm_kunit_device_init(test, DRIVER_MODESET, "drm-client-modeset-test"); 45 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm); 46 47 ret = drmm_connector_init(priv->drm, &priv->connector, 48 &drm_client_modeset_connector_funcs, 49 DRM_MODE_CONNECTOR_Unknown, 50 NULL); 51 KUNIT_ASSERT_EQ(test, ret, 0); 52 53 drm_connector_helper_add(&priv->connector, &drm_client_modeset_connector_helper_funcs); 54 55 return 0; 56 } 57 58 static void drm_test_pick_cmdline_res_1920_1080_60(struct kunit *test) 59 { 60 struct drm_client_modeset_test_priv *priv = test->priv; 61 struct drm_device *drm = priv->drm; 62 struct drm_connector *connector = &priv->connector; 63 struct drm_cmdline_mode *cmdline_mode = &connector->cmdline_mode; 64 struct drm_display_mode *expected_mode, *mode; 65 const char *cmdline = "1920x1080@60"; 66 int ret; 67 68 expected_mode = drm_mode_find_dmt(priv->drm, 1920, 1080, 60, false); 69 KUNIT_ASSERT_NOT_NULL(test, expected_mode); 70 71 KUNIT_ASSERT_TRUE(test, 72 drm_mode_parse_command_line_for_connector(cmdline, 73 connector, 74 cmdline_mode)); 75 76 mutex_lock(&drm->mode_config.mutex); 77 ret = drm_helper_probe_single_connector_modes(connector, 1920, 1080); 78 mutex_unlock(&drm->mode_config.mutex); 79 KUNIT_ASSERT_GT(test, ret, 0); 80 81 mode = drm_connector_pick_cmdline_mode(connector); 82 KUNIT_ASSERT_NOT_NULL(test, mode); 83 84 KUNIT_EXPECT_TRUE(test, drm_mode_equal(expected_mode, mode)); 85 } 86 87 static struct kunit_case drm_test_pick_cmdline_tests[] = { 88 KUNIT_CASE(drm_test_pick_cmdline_res_1920_1080_60), 89 {} 90 }; 91 92 static struct kunit_suite drm_test_pick_cmdline_test_suite = { 93 .name = "drm_test_pick_cmdline", 94 .init = drm_client_modeset_test_init, 95 .test_cases = drm_test_pick_cmdline_tests 96 }; 97 98 kunit_test_suite(drm_test_pick_cmdline_test_suite); 99