1// SPDX-License-Identifier: GPL-2.0
2
3#include <drm/drm_atomic_state_helper.h>
4#include <drm/drm_atomic_uapi.h>
5#include <drm/drm_connector.h>
6#include <drm/drm_crtc.h>
7#include <drm/drm_encoder.h>
8#include <drm/drm_modeset_helper_vtables.h>
9
10#include <kunit/test.h>
11
12#include "vc4_mock.h"
13
14static const struct drm_connector_helper_funcs vc4_dummy_connector_helper_funcs = {
15};
16
17static const struct drm_connector_funcs vc4_dummy_connector_funcs = {
18 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
19 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
20 .reset = drm_atomic_helper_connector_reset,
21};
22
23struct vc4_dummy_output *vc4_dummy_output(struct kunit *test,
24 struct drm_device *drm,
25 struct drm_crtc *crtc,
26 enum vc4_encoder_type vc4_encoder_type,
27 unsigned int kms_encoder_type,
28 unsigned int connector_type)
29{
30 struct vc4_dummy_output *dummy_output;
31 struct drm_connector *conn;
32 struct drm_encoder *enc;
33 int ret;
34
35 dummy_output = drmm_kzalloc(dev: drm, size: sizeof(*dummy_output), GFP_KERNEL);
36 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_output);
37 dummy_output->encoder.type = vc4_encoder_type;
38
39 enc = &dummy_output->encoder.base;
40 ret = drmm_encoder_init(dev: drm, encoder: enc,
41 NULL,
42 encoder_type: kms_encoder_type,
43 NULL);
44 KUNIT_ASSERT_EQ(test, ret, 0);
45 enc->possible_crtcs = drm_crtc_mask(crtc);
46
47 conn = &dummy_output->connector;
48 ret = drmm_connector_init(dev: drm, connector: conn,
49 funcs: &vc4_dummy_connector_funcs,
50 connector_type,
51 NULL);
52 KUNIT_ASSERT_EQ(test, ret, 0);
53
54 drm_connector_helper_add(connector: conn, funcs: &vc4_dummy_connector_helper_funcs);
55 drm_connector_attach_encoder(connector: conn, encoder: enc);
56
57 return dummy_output;
58}
59
60static const struct drm_display_mode default_mode = {
61 DRM_SIMPLE_MODE(640, 480, 64, 48)
62};
63
64/**
65 * vc4_mock_atomic_add_output() - Enables an output in a state
66 * @test: The test context object
67 * @state: Atomic state to enable the output in.
68 * @type: Type of the output encoder
69 *
70 * Adds an output CRTC and connector to a state, and enables them.
71 *
72 * Returns:
73 * 0 on success, a negative error code on failure. If the error is
74 * EDEADLK, the entire atomic sequence must be restarted. All other
75 * errors are fatal.
76 */
77int vc4_mock_atomic_add_output(struct kunit *test,
78 struct drm_atomic_state *state,
79 enum vc4_encoder_type type)
80{
81 struct drm_device *drm = state->dev;
82 struct drm_connector_state *conn_state;
83 struct drm_crtc_state *crtc_state;
84 struct vc4_dummy_output *output;
85 struct drm_connector *conn;
86 struct drm_encoder *encoder;
87 struct drm_crtc *crtc;
88 int ret;
89
90 encoder = vc4_find_encoder_by_type(drm, type);
91 if (!encoder)
92 return -ENODEV;
93
94 crtc = vc4_find_crtc_for_encoder(test, drm, encoder);
95 if (!crtc)
96 return -ENODEV;
97
98 output = encoder_to_vc4_dummy_output(encoder);
99 conn = &output->connector;
100 conn_state = drm_atomic_get_connector_state(state, connector: conn);
101 if (IS_ERR(ptr: conn_state))
102 return PTR_ERR(ptr: conn_state);
103
104 ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
105 if (ret)
106 return ret;
107
108 crtc_state = drm_atomic_get_crtc_state(state, crtc);
109 if (IS_ERR(ptr: crtc_state))
110 return PTR_ERR(ptr: crtc_state);
111
112 ret = drm_atomic_set_mode_for_crtc(state: crtc_state, mode: &default_mode);
113 if (ret)
114 return ret;
115
116 crtc_state->active = true;
117
118 return 0;
119}
120
121/**
122 * vc4_mock_atomic_del_output() - Disables an output in a state
123 * @test: The test context object
124 * @state: Atomic state to disable the output in.
125 * @type: Type of the output encoder
126 *
127 * Adds an output CRTC and connector to a state, and disables them.
128 *
129 * Returns:
130 * 0 on success, a negative error code on failure. If the error is
131 * EDEADLK, the entire atomic sequence must be restarted. All other
132 * errors are fatal.
133 */
134int vc4_mock_atomic_del_output(struct kunit *test,
135 struct drm_atomic_state *state,
136 enum vc4_encoder_type type)
137{
138 struct drm_device *drm = state->dev;
139 struct drm_connector_state *conn_state;
140 struct drm_crtc_state *crtc_state;
141 struct vc4_dummy_output *output;
142 struct drm_connector *conn;
143 struct drm_encoder *encoder;
144 struct drm_crtc *crtc;
145 int ret;
146
147 encoder = vc4_find_encoder_by_type(drm, type);
148 if (!encoder)
149 return -ENODEV;
150
151 crtc = vc4_find_crtc_for_encoder(test, drm, encoder);
152 if (!crtc)
153 return -ENODEV;
154
155 crtc_state = drm_atomic_get_crtc_state(state, crtc);
156 if (IS_ERR(ptr: crtc_state))
157 return PTR_ERR(ptr: crtc_state);
158
159 crtc_state->active = false;
160
161 ret = drm_atomic_set_mode_for_crtc(state: crtc_state, NULL);
162 if (ret)
163 return ret;
164
165 output = encoder_to_vc4_dummy_output(encoder);
166 conn = &output->connector;
167 conn_state = drm_atomic_get_connector_state(state, connector: conn);
168 if (IS_ERR(ptr: conn_state))
169 return PTR_ERR(ptr: conn_state);
170
171 ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
172 if (ret)
173 return ret;
174
175 return 0;
176}
177

source code of linux/drivers/gpu/drm/vc4/tests/vc4_mock_output.c