1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Kunit test for drm_probe_helper functions
4 */
5
6 #include <drm/drm_atomic_state_helper.h>
7 #include <drm/drm_connector.h>
8 #include <drm/drm_device.h>
9 #include <drm/drm_drv.h>
10 #include <drm/drm_kunit_helpers.h>
11 #include <drm/drm_mode.h>
12 #include <drm/drm_modes.h>
13 #include <drm/drm_modeset_helper_vtables.h>
14 #include <drm/drm_probe_helper.h>
15
16 #include <kunit/test.h>
17
18 struct drm_probe_helper_test_priv {
19 struct drm_device *drm;
20 struct device *dev;
21 struct drm_connector connector;
22 };
23
24 static const struct drm_connector_helper_funcs drm_probe_helper_connector_helper_funcs = {
25 };
26
27 static const struct drm_connector_funcs drm_probe_helper_connector_funcs = {
28 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
29 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
30 .reset = drm_atomic_helper_connector_reset,
31 };
32
drm_probe_helper_test_init(struct kunit * test)33 static int drm_probe_helper_test_init(struct kunit *test)
34 {
35 struct drm_probe_helper_test_priv *priv;
36 struct drm_connector *connector;
37 int ret;
38
39 priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
40 KUNIT_ASSERT_NOT_NULL(test, priv);
41 test->priv = priv;
42
43 priv->dev = drm_kunit_helper_alloc_device(test);
44 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
45
46 priv->drm = __drm_kunit_helper_alloc_drm_device(test, priv->dev,
47 sizeof(*priv->drm), 0,
48 DRIVER_MODESET | DRIVER_ATOMIC);
49 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm);
50
51 connector = &priv->connector;
52 ret = drmm_connector_init(priv->drm, connector,
53 &drm_probe_helper_connector_funcs,
54 DRM_MODE_CONNECTOR_Unknown,
55 NULL);
56 KUNIT_ASSERT_EQ(test, ret, 0);
57
58 drm_connector_helper_add(connector, &drm_probe_helper_connector_helper_funcs);
59
60 return 0;
61 }
62
63 typedef struct drm_display_mode *(*expected_mode_func_t)(struct drm_device *);
64
65 struct drm_connector_helper_tv_get_modes_test {
66 const char *name;
67 unsigned int supported_tv_modes;
68 enum drm_connector_tv_mode default_mode;
69 bool cmdline;
70 enum drm_connector_tv_mode cmdline_mode;
71 expected_mode_func_t *expected_modes;
72 unsigned int num_expected_modes;
73 };
74
75 #define _TV_MODE_TEST(_name, _supported, _default, _cmdline, _cmdline_mode, ...) \
76 { \
77 .name = _name, \
78 .supported_tv_modes = _supported, \
79 .default_mode = _default, \
80 .cmdline = _cmdline, \
81 .cmdline_mode = _cmdline_mode, \
82 .expected_modes = (expected_mode_func_t[]) { __VA_ARGS__ }, \
83 .num_expected_modes = sizeof((expected_mode_func_t[]) { __VA_ARGS__ }) / \
84 (sizeof(expected_mode_func_t)), \
85 }
86
87 #define TV_MODE_TEST(_name, _supported, _default, ...) \
88 _TV_MODE_TEST(_name, _supported, _default, false, 0, __VA_ARGS__)
89
90 #define TV_MODE_TEST_CMDLINE(_name, _supported, _default, _cmdline, ...) \
91 _TV_MODE_TEST(_name, _supported, _default, true, _cmdline, __VA_ARGS__)
92
93 static void
drm_test_connector_helper_tv_get_modes_check(struct kunit * test)94 drm_test_connector_helper_tv_get_modes_check(struct kunit *test)
95 {
96 const struct drm_connector_helper_tv_get_modes_test *params = test->param_value;
97 struct drm_probe_helper_test_priv *priv = test->priv;
98 struct drm_connector *connector = &priv->connector;
99 struct drm_cmdline_mode *cmdline = &connector->cmdline_mode;
100 struct drm_display_mode *mode;
101 const struct drm_display_mode *expected;
102 size_t len;
103 int ret;
104
105 if (params->cmdline) {
106 cmdline->tv_mode_specified = true;
107 cmdline->tv_mode = params->cmdline_mode;
108 }
109
110 ret = drm_mode_create_tv_properties(priv->drm, params->supported_tv_modes);
111 KUNIT_ASSERT_EQ(test, ret, 0);
112
113 drm_object_attach_property(&connector->base,
114 priv->drm->mode_config.tv_mode_property,
115 params->default_mode);
116
117 mutex_lock(&priv->drm->mode_config.mutex);
118
119 ret = drm_connector_helper_tv_get_modes(connector);
120 KUNIT_EXPECT_EQ(test, ret, params->num_expected_modes);
121
122 len = 0;
123 list_for_each_entry(mode, &connector->probed_modes, head)
124 len++;
125 KUNIT_EXPECT_EQ(test, len, params->num_expected_modes);
126
127 if (params->num_expected_modes >= 1) {
128 mode = list_first_entry_or_null(&connector->probed_modes,
129 struct drm_display_mode, head);
130 KUNIT_ASSERT_NOT_NULL(test, mode);
131
132 expected = params->expected_modes[0](priv->drm);
133 KUNIT_ASSERT_NOT_NULL(test, expected);
134
135 KUNIT_EXPECT_TRUE(test, drm_mode_equal(mode, expected));
136 KUNIT_EXPECT_TRUE(test, mode->type & DRM_MODE_TYPE_PREFERRED);
137 }
138
139 if (params->num_expected_modes >= 2) {
140 mode = list_next_entry(mode, head);
141 KUNIT_ASSERT_NOT_NULL(test, mode);
142
143 expected = params->expected_modes[1](priv->drm);
144 KUNIT_ASSERT_NOT_NULL(test, expected);
145
146 KUNIT_EXPECT_TRUE(test, drm_mode_equal(mode, expected));
147 KUNIT_EXPECT_FALSE(test, mode->type & DRM_MODE_TYPE_PREFERRED);
148 }
149
150 mutex_unlock(&priv->drm->mode_config.mutex);
151 }
152
153 static const
154 struct drm_connector_helper_tv_get_modes_test drm_connector_helper_tv_get_modes_tests[] = {
155 { .name = "None" },
156 TV_MODE_TEST("PAL",
157 BIT(DRM_MODE_TV_MODE_PAL),
158 DRM_MODE_TV_MODE_PAL,
159 drm_mode_analog_pal_576i),
160 TV_MODE_TEST("NTSC",
161 BIT(DRM_MODE_TV_MODE_NTSC),
162 DRM_MODE_TV_MODE_NTSC,
163 drm_mode_analog_ntsc_480i),
164 TV_MODE_TEST("Both, NTSC Default",
165 BIT(DRM_MODE_TV_MODE_NTSC) | BIT(DRM_MODE_TV_MODE_PAL),
166 DRM_MODE_TV_MODE_NTSC,
167 drm_mode_analog_ntsc_480i, drm_mode_analog_pal_576i),
168 TV_MODE_TEST("Both, PAL Default",
169 BIT(DRM_MODE_TV_MODE_NTSC) | BIT(DRM_MODE_TV_MODE_PAL),
170 DRM_MODE_TV_MODE_PAL,
171 drm_mode_analog_pal_576i, drm_mode_analog_ntsc_480i),
172 TV_MODE_TEST_CMDLINE("Both, NTSC Default, with PAL on command-line",
173 BIT(DRM_MODE_TV_MODE_NTSC) | BIT(DRM_MODE_TV_MODE_PAL),
174 DRM_MODE_TV_MODE_NTSC,
175 DRM_MODE_TV_MODE_PAL,
176 drm_mode_analog_pal_576i, drm_mode_analog_ntsc_480i),
177 TV_MODE_TEST_CMDLINE("Both, PAL Default, with NTSC on command-line",
178 BIT(DRM_MODE_TV_MODE_NTSC) | BIT(DRM_MODE_TV_MODE_PAL),
179 DRM_MODE_TV_MODE_PAL,
180 DRM_MODE_TV_MODE_NTSC,
181 drm_mode_analog_ntsc_480i, drm_mode_analog_pal_576i),
182 };
183
184 static void
drm_connector_helper_tv_get_modes_desc(const struct drm_connector_helper_tv_get_modes_test * t,char * desc)185 drm_connector_helper_tv_get_modes_desc(const struct drm_connector_helper_tv_get_modes_test *t,
186 char *desc)
187 {
188 sprintf(desc, "%s", t->name);
189 }
190
191 KUNIT_ARRAY_PARAM(drm_connector_helper_tv_get_modes,
192 drm_connector_helper_tv_get_modes_tests,
193 drm_connector_helper_tv_get_modes_desc);
194
195 static struct kunit_case drm_test_connector_helper_tv_get_modes_tests[] = {
196 KUNIT_CASE_PARAM(drm_test_connector_helper_tv_get_modes_check,
197 drm_connector_helper_tv_get_modes_gen_params),
198 { }
199 };
200
201 static struct kunit_suite drm_test_connector_helper_tv_get_modes_suite = {
202 .name = "drm_connector_helper_tv_get_modes",
203 .init = drm_probe_helper_test_init,
204 .test_cases = drm_test_connector_helper_tv_get_modes_tests,
205 };
206
207 kunit_test_suite(drm_test_connector_helper_tv_get_modes_suite);
208
209 MODULE_AUTHOR("Maxime Ripard <maxime@cerno.tech>");
210 MODULE_DESCRIPTION("Kunit test for drm_probe_helper functions");
211 MODULE_LICENSE("GPL");
212