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
17struct drm_client_modeset_test_priv {
18	struct drm_device *drm;
19	struct drm_connector connector;
20};
21
22static int drm_client_modeset_connector_get_modes(struct drm_connector *connector)
23{
24	return drm_add_modes_noedid(connector, 1920, 1200);
25}
26
27static const struct drm_connector_helper_funcs drm_client_modeset_connector_helper_funcs = {
28	.get_modes = drm_client_modeset_connector_get_modes,
29};
30
31static const struct drm_connector_funcs drm_client_modeset_connector_funcs = {
32};
33
34static 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
58static 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
87static struct kunit_case drm_test_pick_cmdline_tests[] = {
88	KUNIT_CASE(drm_test_pick_cmdline_res_1920_1080_60),
89	{}
90};
91
92static 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
98kunit_test_suite(drm_test_pick_cmdline_test_suite);