1 // SPDX-License-Identifier: GPL-2.0
2
3 #ifndef DRM_KUNIT_HELPERS_H_
4 #define DRM_KUNIT_HELPERS_H_
5
6 #include <drm/drm_drv.h>
7
8 #include <linux/device.h>
9
10 #include <kunit/test.h>
11
12 struct drm_crtc_funcs;
13 struct drm_crtc_helper_funcs;
14 struct drm_device;
15 struct drm_plane_funcs;
16 struct drm_plane_helper_funcs;
17 struct kunit;
18
19 struct device *drm_kunit_helper_alloc_device(struct kunit *test);
20 void drm_kunit_helper_free_device(struct kunit *test, struct device *dev);
21
22 struct drm_device *
23 __drm_kunit_helper_alloc_drm_device_with_driver(struct kunit *test,
24 struct device *dev,
25 size_t size, size_t offset,
26 const struct drm_driver *driver);
27
28 /**
29 * drm_kunit_helper_alloc_drm_device_with_driver - Allocates a mock DRM device for KUnit tests
30 * @_test: The test context object
31 * @_dev: The parent device object
32 * @_type: the type of the struct which contains struct &drm_device
33 * @_member: the name of the &drm_device within @_type.
34 * @_drv: Mocked DRM device driver features
35 *
36 * This function creates a struct &drm_device from @_dev and @_drv.
37 *
38 * @_dev should be allocated using drm_kunit_helper_alloc_device().
39 *
40 * The driver is tied to the @_test context and will get cleaned at the
41 * end of the test. The drm_device is allocated through
42 * devm_drm_dev_alloc() and will thus be freed through a device-managed
43 * resource.
44 *
45 * Returns:
46 * A pointer to the new drm_device, or an ERR_PTR() otherwise.
47 */
48 #define drm_kunit_helper_alloc_drm_device_with_driver(_test, _dev, _type, _member, _drv) \
49 ((_type *)__drm_kunit_helper_alloc_drm_device_with_driver(_test, _dev, \
50 sizeof(_type), \
51 offsetof(_type, _member), \
52 _drv))
53
54 static inline struct drm_device *
55 __drm_kunit_helper_alloc_drm_device(struct kunit *test,
56 struct device *dev,
57 size_t size, size_t offset,
58 u32 features)
59 {
60 struct drm_driver *driver;
61
62 driver = devm_kzalloc(dev, sizeof(*driver), GFP_KERNEL);
63 KUNIT_ASSERT_NOT_NULL(test, driver);
64
65 driver->driver_features = features;
66
67 return __drm_kunit_helper_alloc_drm_device_with_driver(test, dev,
68 size, offset,
69 driver);
70 }
71
72 /**
73 * drm_kunit_helper_alloc_drm_device - Allocates a mock DRM device for KUnit tests
74 * @_test: The test context object
75 * @_dev: The parent device object
76 * @_type: the type of the struct which contains struct &drm_device
77 * @_member: the name of the &drm_device within @_type.
78 * @_feat: Mocked DRM device driver features
79 *
80 * This function creates a struct &drm_driver and will create a struct
81 * &drm_device from @_dev and that driver.
82 *
83 * @_dev should be allocated using drm_kunit_helper_alloc_device().
84 *
85 * The driver is tied to the @_test context and will get cleaned at the
86 * end of the test. The drm_device is allocated through
87 * devm_drm_dev_alloc() and will thus be freed through a device-managed
88 * resource.
89 *
90 * Returns:
91 * A pointer to the new drm_device, or an ERR_PTR() otherwise.
92 */
93 #define drm_kunit_helper_alloc_drm_device(_test, _dev, _type, _member, _feat) \
94 ((_type *)__drm_kunit_helper_alloc_drm_device(_test, _dev, \
95 sizeof(_type), \
96 offsetof(_type, _member), \
97 _feat))
98 struct drm_modeset_acquire_ctx *
99 drm_kunit_helper_acquire_ctx_alloc(struct kunit *test);
100
101 struct drm_atomic_state *
102 drm_kunit_helper_atomic_state_alloc(struct kunit *test,
103 struct drm_device *drm,
104 struct drm_modeset_acquire_ctx *ctx);
105
106 struct drm_plane *
107 drm_kunit_helper_create_primary_plane(struct kunit *test,
108 struct drm_device *drm,
109 const struct drm_plane_funcs *funcs,
110 const struct drm_plane_helper_funcs *helper_funcs,
111 const uint32_t *formats,
112 unsigned int num_formats,
113 const uint64_t *modifiers);
114
115 struct drm_crtc *
116 drm_kunit_helper_create_crtc(struct kunit *test,
117 struct drm_device *drm,
118 struct drm_plane *primary,
119 struct drm_plane *cursor,
120 const struct drm_crtc_funcs *funcs,
121 const struct drm_crtc_helper_funcs *helper_funcs);
122
123 #endif // DRM_KUNIT_HELPERS_H_
124
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