1 // SPDX-License-Identifier: GPL-2.0
2
3 #include <drm/drm_drv.h>
4 #include <drm/drm_kunit_helpers.h>
5 #include <drm/drm_managed.h>
6
7 #include <kunit/resource.h>
8
9 #include <linux/device.h>
10
11 /* Ought to be enough for anybody */
12 #define TEST_TIMEOUT_MS 100
13
14 struct managed_test_priv {
15 bool action_done;
16 wait_queue_head_t action_wq;
17 };
18
drm_action(struct drm_device * drm,void * ptr)19 static void drm_action(struct drm_device *drm, void *ptr)
20 {
21 struct managed_test_priv *priv = ptr;
22
23 priv->action_done = true;
24 wake_up_interruptible(&priv->action_wq);
25 }
26
drm_test_managed_run_action(struct kunit * test)27 static void drm_test_managed_run_action(struct kunit *test)
28 {
29 struct managed_test_priv *priv;
30 struct drm_device *drm;
31 struct device *dev;
32 int ret;
33
34 priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
35 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
36 init_waitqueue_head(&priv->action_wq);
37
38 dev = drm_kunit_helper_alloc_device(test);
39 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
40
41 drm = __drm_kunit_helper_alloc_drm_device(test, dev, sizeof(*drm), 0, DRIVER_MODESET);
42 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, drm);
43
44 ret = drmm_add_action_or_reset(drm, drm_action, priv);
45 KUNIT_EXPECT_EQ(test, ret, 0);
46
47 ret = drm_dev_register(drm, 0);
48 KUNIT_ASSERT_EQ(test, ret, 0);
49
50 drm_dev_unregister(drm);
51 drm_kunit_helper_free_device(test, dev);
52
53 ret = wait_event_interruptible_timeout(priv->action_wq, priv->action_done,
54 msecs_to_jiffies(TEST_TIMEOUT_MS));
55 KUNIT_EXPECT_GT(test, ret, 0);
56 }
57
58 static struct kunit_case drm_managed_tests[] = {
59 KUNIT_CASE(drm_test_managed_run_action),
60 {}
61 };
62
63 static struct kunit_suite drm_managed_test_suite = {
64 .name = "drm-test-managed",
65 .test_cases = drm_managed_tests
66 };
67
68 kunit_test_suite(drm_managed_test_suite);
69
70 MODULE_AUTHOR("Maxime Ripard <maxime@cerno.tech>");
71 MODULE_LICENSE("GPL");
72