Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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_kunit_helpers.h>
12#include <drm/drm_modes.h>
13#include <drm/drm_modeset_helper_vtables.h>
14#include <drm/drm_probe_helper.h>
15
16struct drm_client_modeset_test_priv {
17 struct drm_device *drm;
18 struct device *dev;
19 struct drm_connector connector;
20};
21
22static int drm_client_modeset_connector_get_modes(struct drm_connector *connector)
23{
24 struct drm_display_mode *mode;
25 int count;
26
27 count = drm_add_modes_noedid(connector, 1920, 1200);
28
29 mode = drm_mode_analog_ntsc_480i(connector->dev);
30 if (!mode)
31 return count;
32
33 drm_mode_probed_add(connector, mode);
34 count += 1;
35
36 mode = drm_mode_analog_pal_576i(connector->dev);
37 if (!mode)
38 return count;
39
40 drm_mode_probed_add(connector, mode);
41 count += 1;
42
43 return count;
44}
45
46static const struct drm_connector_helper_funcs drm_client_modeset_connector_helper_funcs = {
47 .get_modes = drm_client_modeset_connector_get_modes,
48};
49
50static const struct drm_connector_funcs drm_client_modeset_connector_funcs = {
51};
52
53static int drm_client_modeset_test_init(struct kunit *test)
54{
55 struct drm_client_modeset_test_priv *priv;
56 int ret;
57
58 priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
59 KUNIT_ASSERT_NOT_NULL(test, priv);
60
61 test->priv = priv;
62
63 priv->dev = drm_kunit_helper_alloc_device(test);
64 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
65
66 priv->drm = __drm_kunit_helper_alloc_drm_device(test, priv->dev,
67 sizeof(*priv->drm), 0,
68 DRIVER_MODESET);
69 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm);
70
71 ret = drmm_connector_init(priv->drm, &priv->connector,
72 &drm_client_modeset_connector_funcs,
73 DRM_MODE_CONNECTOR_Unknown,
74 NULL);
75 KUNIT_ASSERT_EQ(test, ret, 0);
76
77 drm_connector_helper_add(&priv->connector, &drm_client_modeset_connector_helper_funcs);
78
79 priv->connector.interlace_allowed = true;
80 priv->connector.doublescan_allowed = true;
81
82 return 0;
83}
84
85static void drm_test_pick_cmdline_res_1920_1080_60(struct kunit *test)
86{
87 struct drm_client_modeset_test_priv *priv = test->priv;
88 struct drm_device *drm = priv->drm;
89 struct drm_connector *connector = &priv->connector;
90 struct drm_cmdline_mode *cmdline_mode = &connector->cmdline_mode;
91 struct drm_display_mode *expected_mode;
92 const struct drm_display_mode *mode;
93 const char *cmdline = "1920x1080@60";
94 int ret;
95
96 expected_mode = drm_mode_find_dmt(priv->drm, 1920, 1080, 60, false);
97 KUNIT_ASSERT_NOT_NULL(test, expected_mode);
98
99 ret = drm_kunit_add_mode_destroy_action(test, expected_mode);
100 KUNIT_ASSERT_EQ(test, ret, 0);
101
102 KUNIT_ASSERT_TRUE(test,
103 drm_mode_parse_command_line_for_connector(cmdline,
104 connector,
105 cmdline_mode));
106
107 mutex_lock(&drm->mode_config.mutex);
108 ret = drm_helper_probe_single_connector_modes(connector, 1920, 1080);
109 mutex_unlock(&drm->mode_config.mutex);
110 KUNIT_ASSERT_GT(test, ret, 0);
111
112 mode = drm_connector_pick_cmdline_mode(connector);
113 KUNIT_ASSERT_NOT_NULL(test, mode);
114
115 KUNIT_EXPECT_TRUE(test, drm_mode_equal(expected_mode, mode));
116}
117
118struct drm_connector_pick_cmdline_mode_test {
119 const char *cmdline;
120 struct drm_display_mode *(*func)(struct drm_device *drm);
121};
122
123#define TEST_CMDLINE(_cmdline, _fn) \
124 { \
125 .cmdline = _cmdline, \
126 .func = _fn, \
127 }
128
129static void drm_test_pick_cmdline_named(struct kunit *test)
130{
131 const struct drm_connector_pick_cmdline_mode_test *params = test->param_value;
132 struct drm_client_modeset_test_priv *priv = test->priv;
133 struct drm_device *drm = priv->drm;
134 struct drm_connector *connector = &priv->connector;
135 struct drm_cmdline_mode *cmdline_mode = &connector->cmdline_mode;
136 const struct drm_display_mode *mode;
137 struct drm_display_mode *expected_mode;
138 const char *cmdline = params->cmdline;
139 int ret;
140
141 KUNIT_ASSERT_TRUE(test,
142 drm_mode_parse_command_line_for_connector(cmdline,
143 connector,
144 cmdline_mode));
145
146 mutex_lock(&drm->mode_config.mutex);
147 ret = drm_helper_probe_single_connector_modes(connector, 1920, 1080);
148 mutex_unlock(&drm->mode_config.mutex);
149 KUNIT_ASSERT_GT(test, ret, 0);
150
151 mode = drm_connector_pick_cmdline_mode(connector);
152 KUNIT_ASSERT_NOT_NULL(test, mode);
153
154 expected_mode = params->func(drm);
155 KUNIT_ASSERT_NOT_NULL(test, expected_mode);
156
157 ret = drm_kunit_add_mode_destroy_action(test, expected_mode);
158 KUNIT_ASSERT_EQ(test, ret, 0);
159
160 KUNIT_EXPECT_TRUE(test, drm_mode_equal(expected_mode, mode));
161}
162
163static const
164struct drm_connector_pick_cmdline_mode_test drm_connector_pick_cmdline_mode_tests[] = {
165 TEST_CMDLINE("NTSC", drm_mode_analog_ntsc_480i),
166 TEST_CMDLINE("NTSC-J", drm_mode_analog_ntsc_480i),
167 TEST_CMDLINE("PAL", drm_mode_analog_pal_576i),
168 TEST_CMDLINE("PAL-M", drm_mode_analog_ntsc_480i),
169};
170
171static void
172drm_connector_pick_cmdline_mode_desc(const struct drm_connector_pick_cmdline_mode_test *t,
173 char *desc)
174{
175 sprintf(desc, "%s", t->cmdline);
176}
177
178KUNIT_ARRAY_PARAM(drm_connector_pick_cmdline_mode,
179 drm_connector_pick_cmdline_mode_tests,
180 drm_connector_pick_cmdline_mode_desc);
181
182static struct kunit_case drm_test_pick_cmdline_tests[] = {
183 KUNIT_CASE(drm_test_pick_cmdline_res_1920_1080_60),
184 KUNIT_CASE_PARAM(drm_test_pick_cmdline_named,
185 drm_connector_pick_cmdline_mode_gen_params),
186 {}
187};
188
189static struct kunit_suite drm_test_pick_cmdline_test_suite = {
190 .name = "drm_test_pick_cmdline",
191 .init = drm_client_modeset_test_init,
192 .test_cases = drm_test_pick_cmdline_tests
193};
194
195kunit_test_suite(drm_test_pick_cmdline_test_suite);
196
197/*
198 * This file is included directly by drm_client_modeset.c so we can't
199 * use any MODULE_* macro here.
200 */