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 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 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