1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
// SPDX-License-Identifier: GPL-2.0
/*
* Test cases for the drm_plane_helper functions
*
* Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net>
*/
#include <kunit/test.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_modes.h>
static void set_src(struct drm_plane_state *plane_state,
unsigned int src_x, unsigned int src_y,
unsigned int src_w, unsigned int src_h)
{
plane_state->src_x = src_x;
plane_state->src_y = src_y;
plane_state->src_w = src_w;
plane_state->src_h = src_h;
}
static bool check_src_eq(struct drm_plane_state *plane_state,
unsigned int src_x, unsigned int src_y,
unsigned int src_w, unsigned int src_h)
{
if (plane_state->src.x1 < 0) {
pr_err("src x coordinate %x should never be below 0.\n", plane_state->src.x1);
drm_rect_debug_print("src: ", &plane_state->src, true);
return false;
}
if (plane_state->src.y1 < 0) {
pr_err("src y coordinate %x should never be below 0.\n", plane_state->src.y1);
drm_rect_debug_print("src: ", &plane_state->src, true);
return false;
}
if (plane_state->src.x1 != src_x ||
plane_state->src.y1 != src_y ||
drm_rect_width(&plane_state->src) != src_w ||
drm_rect_height(&plane_state->src) != src_h) {
drm_rect_debug_print("src: ", &plane_state->src, true);
return false;
}
return true;
}
static void set_crtc(struct drm_plane_state *plane_state,
int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h)
{
plane_state->crtc_x = crtc_x;
plane_state->crtc_y = crtc_y;
plane_state->crtc_w = crtc_w;
plane_state->crtc_h = crtc_h;
}
static bool check_crtc_eq(struct drm_plane_state *plane_state,
int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h)
{
if (plane_state->dst.x1 != crtc_x ||
plane_state->dst.y1 != crtc_y ||
drm_rect_width(&plane_state->dst) != crtc_w ||
drm_rect_height(&plane_state->dst) != crtc_h) {
drm_rect_debug_print("dst: ", &plane_state->dst, false);
return false;
}
return true;
}
static void drm_test_check_plane_state(struct kunit *test)
{
int ret;
static const struct drm_crtc_state crtc_state = {
.crtc = ZERO_SIZE_PTR,
.enable = true,
.active = true,
.mode = {
DRM_MODE("1024x768", 0, 65000, 1024, 1048, 1184, 1344, 0, 768, 771,
777, 806, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)
},
};
static struct drm_plane plane = {
.dev = NULL
};
static struct drm_framebuffer fb = {
.width = 2048,
.height = 2048
};
static struct drm_plane_state plane_state = {
.plane = &plane,
.crtc = ZERO_SIZE_PTR,
.fb = &fb,
.rotation = DRM_MODE_ROTATE_0
};
/* Simple clipping, no scaling. */
set_src(&plane_state, 0, 0, fb.width << 16, fb.height << 16);
set_crtc(&plane_state, 0, 0, fb.width, fb.height);
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
DRM_PLANE_NO_SCALING,
DRM_PLANE_NO_SCALING,
false, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Simple clipping check should pass\n");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 1024 << 16, 768 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
/* Rotated clipping + reflection, no scaling. */
plane_state.rotation = DRM_MODE_ROTATE_90 | DRM_MODE_REFLECT_X;
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
DRM_PLANE_NO_SCALING,
DRM_PLANE_NO_SCALING,
false, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Rotated clipping check should pass\n");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 768 << 16, 1024 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
plane_state.rotation = DRM_MODE_ROTATE_0;
/* Check whether positioning works correctly. */
set_src(&plane_state, 0, 0, 1023 << 16, 767 << 16);
set_crtc(&plane_state, 0, 0, 1023, 767);
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
DRM_PLANE_NO_SCALING,
DRM_PLANE_NO_SCALING,
false, false);
KUNIT_EXPECT_TRUE_MSG(test, ret,
"Should not be able to position on the crtc with can_position=false\n");
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
DRM_PLANE_NO_SCALING,
DRM_PLANE_NO_SCALING,
true, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Simple positioning should work\n");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 1023 << 16, 767 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1023, 767));
/* Simple scaling tests. */
set_src(&plane_state, 0, 0, 512 << 16, 384 << 16);
set_crtc(&plane_state, 0, 0, 1024, 768);
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
0x8001,
DRM_PLANE_NO_SCALING,
false, false);
KUNIT_EXPECT_TRUE_MSG(test, ret, "Upscaling out of range should fail.\n");
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
0x8000,
DRM_PLANE_NO_SCALING,
false, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Upscaling exactly 2x should work\n");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 512 << 16, 384 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
set_src(&plane_state, 0, 0, 2048 << 16, 1536 << 16);
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
DRM_PLANE_NO_SCALING,
0x1ffff, false, false);
KUNIT_EXPECT_TRUE_MSG(test, ret, "Downscaling out of range should fail.\n");
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
DRM_PLANE_NO_SCALING,
0x20000, false, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed with exact scaling limit\n");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2048 << 16, 1536 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
/* Testing rounding errors. */
set_src(&plane_state, 0, 0, 0x40001, 0x40001);
set_crtc(&plane_state, 1022, 766, 4, 4);
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
DRM_PLANE_NO_SCALING,
0x10001,
true, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2 << 16, 2 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 1022, 766, 2, 2));
set_src(&plane_state, 0x20001, 0x20001, 0x4040001, 0x3040001);
set_crtc(&plane_state, -2, -2, 1028, 772);
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
DRM_PLANE_NO_SCALING,
0x10001,
false, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0x40002, 0x40002,
1024 << 16, 768 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
set_src(&plane_state, 0, 0, 0x3ffff, 0x3ffff);
set_crtc(&plane_state, 1022, 766, 4, 4);
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
0xffff,
DRM_PLANE_NO_SCALING,
true, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
/* Should not be rounded to 0x20001, which would be upscaling. */
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2 << 16, 2 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 1022, 766, 2, 2));
set_src(&plane_state, 0x1ffff, 0x1ffff, 0x403ffff, 0x303ffff);
set_crtc(&plane_state, -2, -2, 1028, 772);
ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state,
0xffff,
DRM_PLANE_NO_SCALING,
false, false);
KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple");
KUNIT_EXPECT_TRUE(test, plane_state.visible);
KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0x3fffe, 0x3fffe,
1024 << 16, 768 << 16));
KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768));
}
static struct kunit_case drm_plane_helper_test[] = {
KUNIT_CASE(drm_test_check_plane_state),
{}
};
static struct kunit_suite drm_plane_helper_test_suite = {
.name = "drm_plane_helper",
.test_cases = drm_plane_helper_test,
};
kunit_test_suite(drm_plane_helper_test_suite);
MODULE_LICENSE("GPL");
|
