Line data Source code
1 : // SPDX-License-Identifier: GPL-2.0
2 : /*
3 : * Test cases for the drm_rect functions
4 : *
5 : * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net>
6 : */
7 :
8 : #include <kunit/test.h>
9 :
10 : #include <drm/drm_rect.h>
11 : #include <drm/drm_mode.h>
12 :
13 : #include <linux/string_helpers.h>
14 : #include <linux/errno.h>
15 :
16 0 : static void drm_rect_compare(struct kunit *test, const struct drm_rect *r,
17 : const struct drm_rect *expected)
18 : {
19 0 : KUNIT_EXPECT_EQ(test, r->x1, expected->x1);
20 0 : KUNIT_EXPECT_EQ(test, r->y1, expected->y1);
21 0 : KUNIT_EXPECT_EQ(test, drm_rect_width(r), drm_rect_width(expected));
22 0 : KUNIT_EXPECT_EQ(test, drm_rect_height(r), drm_rect_height(expected));
23 0 : }
24 :
25 0 : static void drm_test_rect_clip_scaled_div_by_zero(struct kunit *test)
26 : {
27 : struct drm_rect src, dst, clip;
28 : bool visible;
29 :
30 : /*
31 : * Make sure we don't divide by zero when dst
32 : * width/height is zero and dst and clip do not intersect.
33 : */
34 0 : drm_rect_init(&src, 0, 0, 0, 0);
35 0 : drm_rect_init(&dst, 0, 0, 0, 0);
36 0 : drm_rect_init(&clip, 1, 1, 1, 1);
37 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
38 :
39 0 : KUNIT_EXPECT_FALSE_MSG(test, visible, "Destination not be visible\n");
40 0 : KUNIT_EXPECT_FALSE_MSG(test, drm_rect_visible(&src), "Source should not be visible\n");
41 :
42 0 : drm_rect_init(&src, 0, 0, 0, 0);
43 0 : drm_rect_init(&dst, 3, 3, 0, 0);
44 0 : drm_rect_init(&clip, 1, 1, 1, 1);
45 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
46 :
47 0 : KUNIT_EXPECT_FALSE_MSG(test, visible, "Destination not be visible\n");
48 0 : KUNIT_EXPECT_FALSE_MSG(test, drm_rect_visible(&src), "Source should not be visible\n");
49 0 : }
50 :
51 0 : static void drm_test_rect_clip_scaled_not_clipped(struct kunit *test)
52 : {
53 : struct drm_rect src, dst, clip;
54 : bool visible;
55 :
56 : /* 1:1 scaling */
57 0 : drm_rect_init(&src, 0, 0, 1 << 16, 1 << 16);
58 0 : drm_rect_init(&dst, 0, 0, 1, 1);
59 0 : drm_rect_init(&clip, 0, 0, 1, 1);
60 :
61 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
62 :
63 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 1 << 16 ||
64 : src.y1 != 0 || src.y2 != 1 << 16, "Source badly clipped\n");
65 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 1 ||
66 : dst.y1 != 0 || dst.y2 != 1, "Destination badly clipped\n");
67 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
68 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
69 :
70 : /* 2:1 scaling */
71 0 : drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16);
72 0 : drm_rect_init(&dst, 0, 0, 1, 1);
73 0 : drm_rect_init(&clip, 0, 0, 1, 1);
74 :
75 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
76 :
77 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 2 << 16 ||
78 : src.y1 != 0 || src.y2 != 2 << 16, "Source badly clipped\n");
79 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 1 ||
80 : dst.y1 != 0 || dst.y2 != 1, "Destination badly clipped\n");
81 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
82 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
83 :
84 : /* 1:2 scaling */
85 0 : drm_rect_init(&src, 0, 0, 1 << 16, 1 << 16);
86 0 : drm_rect_init(&dst, 0, 0, 2, 2);
87 0 : drm_rect_init(&clip, 0, 0, 2, 2);
88 :
89 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
90 :
91 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 1 << 16 ||
92 : src.y1 != 0 || src.y2 != 1 << 16, "Source badly clipped\n");
93 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 2 ||
94 : dst.y1 != 0 || dst.y2 != 2, "Destination badly clipped\n");
95 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
96 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
97 0 : }
98 :
99 0 : static void drm_test_rect_clip_scaled_clipped(struct kunit *test)
100 : {
101 : struct drm_rect src, dst, clip;
102 : bool visible;
103 :
104 : /* 1:1 scaling top/left clip */
105 0 : drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16);
106 0 : drm_rect_init(&dst, 0, 0, 2, 2);
107 : drm_rect_init(&clip, 0, 0, 1, 1);
108 :
109 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
110 :
111 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 1 << 16 ||
112 : src.y1 != 0 || src.y2 != 1 << 16, "Source badly clipped\n");
113 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 1 ||
114 : dst.y1 != 0 || dst.y2 != 1, "Destination badly clipped\n");
115 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
116 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
117 :
118 : /* 1:1 scaling bottom/right clip */
119 0 : drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16);
120 0 : drm_rect_init(&dst, 0, 0, 2, 2);
121 0 : drm_rect_init(&clip, 1, 1, 1, 1);
122 :
123 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
124 :
125 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 1 << 16 || src.x2 != 2 << 16 ||
126 : src.y1 != 1 << 16 || src.y2 != 2 << 16, "Source badly clipped\n");
127 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 1 || dst.x2 != 2 || dst.y1 != 1 ||
128 : dst.y2 != 2, "Destination badly clipped\n");
129 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
130 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
131 :
132 : /* 2:1 scaling top/left clip */
133 0 : drm_rect_init(&src, 0, 0, 4 << 16, 4 << 16);
134 0 : drm_rect_init(&dst, 0, 0, 2, 2);
135 0 : drm_rect_init(&clip, 0, 0, 1, 1);
136 :
137 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
138 :
139 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 2 << 16 ||
140 : src.y1 != 0 || src.y2 != 2 << 16, "Source badly clipped\n");
141 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 1 || dst.y1 != 0 ||
142 : dst.y2 != 1, "Destination badly clipped\n");
143 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
144 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
145 :
146 : /* 2:1 scaling bottom/right clip */
147 0 : drm_rect_init(&src, 0, 0, 4 << 16, 4 << 16);
148 0 : drm_rect_init(&dst, 0, 0, 2, 2);
149 0 : drm_rect_init(&clip, 1, 1, 1, 1);
150 :
151 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
152 :
153 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 2 << 16 || src.x2 != 4 << 16 ||
154 : src.y1 != 2 << 16 || src.y2 != 4 << 16, "Source badly clipped\n");
155 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 1 || dst.x2 != 2 || dst.y1 != 1 ||
156 : dst.y2 != 2, "Destination badly clipped\n");
157 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
158 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
159 :
160 : /* 1:2 scaling top/left clip */
161 0 : drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16);
162 0 : drm_rect_init(&dst, 0, 0, 4, 4);
163 0 : drm_rect_init(&clip, 0, 0, 2, 2);
164 :
165 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
166 :
167 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 1 << 16 ||
168 : src.y1 != 0 || src.y2 != 1 << 16, "Source badly clipped\n");
169 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 2 || dst.y1 != 0 ||
170 : dst.y2 != 2, "Destination badly clipped\n");
171 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
172 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
173 :
174 : /* 1:2 scaling bottom/right clip */
175 0 : drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16);
176 0 : drm_rect_init(&dst, 0, 0, 4, 4);
177 0 : drm_rect_init(&clip, 2, 2, 2, 2);
178 :
179 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
180 :
181 0 : KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 1 << 16 || src.x2 != 2 << 16 ||
182 : src.y1 != 1 << 16 || src.y2 != 2 << 16, "Source badly clipped\n");
183 0 : KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 2 || dst.x2 != 4 || dst.y1 != 2 ||
184 : dst.y2 != 4, "Destination badly clipped\n");
185 0 : KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n");
186 0 : KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n");
187 0 : }
188 :
189 0 : static void drm_test_rect_clip_scaled_signed_vs_unsigned(struct kunit *test)
190 : {
191 : struct drm_rect src, dst, clip;
192 : bool visible;
193 :
194 : /*
195 : * 'clip.x2 - dst.x1 >= dst width' could result a negative
196 : * src rectangle width which is no longer expected by the
197 : * code as it's using unsigned types. This could lead to
198 : * the clipped source rectangle appering visible when it
199 : * should have been fully clipped. Make sure both rectangles
200 : * end up invisible.
201 : */
202 0 : drm_rect_init(&src, 0, 0, INT_MAX, INT_MAX);
203 0 : drm_rect_init(&dst, 0, 0, 2, 2);
204 0 : drm_rect_init(&clip, 3, 3, 1, 1);
205 :
206 0 : visible = drm_rect_clip_scaled(&src, &dst, &clip);
207 :
208 0 : KUNIT_EXPECT_FALSE_MSG(test, visible, "Destination should not be visible\n");
209 0 : KUNIT_EXPECT_FALSE_MSG(test, drm_rect_visible(&src), "Source should not be visible\n");
210 0 : }
211 :
212 : struct drm_rect_intersect_case {
213 : const char *description;
214 : struct drm_rect r1, r2;
215 : bool should_be_visible;
216 : struct drm_rect expected_intersection;
217 : };
218 :
219 : static const struct drm_rect_intersect_case drm_rect_intersect_cases[] = {
220 : {
221 : .description = "top-left x bottom-right",
222 : .r1 = DRM_RECT_INIT(1, 1, 2, 2),
223 : .r2 = DRM_RECT_INIT(0, 0, 2, 2),
224 : .should_be_visible = true,
225 : .expected_intersection = DRM_RECT_INIT(1, 1, 1, 1),
226 : },
227 : {
228 : .description = "top-right x bottom-left",
229 : .r1 = DRM_RECT_INIT(0, 0, 2, 2),
230 : .r2 = DRM_RECT_INIT(1, -1, 2, 2),
231 : .should_be_visible = true,
232 : .expected_intersection = DRM_RECT_INIT(1, 0, 1, 1),
233 : },
234 : {
235 : .description = "bottom-left x top-right",
236 : .r1 = DRM_RECT_INIT(1, -1, 2, 2),
237 : .r2 = DRM_RECT_INIT(0, 0, 2, 2),
238 : .should_be_visible = true,
239 : .expected_intersection = DRM_RECT_INIT(1, 0, 1, 1),
240 : },
241 : {
242 : .description = "bottom-right x top-left",
243 : .r1 = DRM_RECT_INIT(0, 0, 2, 2),
244 : .r2 = DRM_RECT_INIT(1, 1, 2, 2),
245 : .should_be_visible = true,
246 : .expected_intersection = DRM_RECT_INIT(1, 1, 1, 1),
247 : },
248 : {
249 : .description = "right x left",
250 : .r1 = DRM_RECT_INIT(0, 0, 2, 1),
251 : .r2 = DRM_RECT_INIT(1, 0, 3, 1),
252 : .should_be_visible = true,
253 : .expected_intersection = DRM_RECT_INIT(1, 0, 1, 1),
254 : },
255 : {
256 : .description = "left x right",
257 : .r1 = DRM_RECT_INIT(1, 0, 3, 1),
258 : .r2 = DRM_RECT_INIT(0, 0, 2, 1),
259 : .should_be_visible = true,
260 : .expected_intersection = DRM_RECT_INIT(1, 0, 1, 1),
261 : },
262 : {
263 : .description = "up x bottom",
264 : .r1 = DRM_RECT_INIT(0, 0, 1, 2),
265 : .r2 = DRM_RECT_INIT(0, -1, 1, 3),
266 : .should_be_visible = true,
267 : .expected_intersection = DRM_RECT_INIT(0, 0, 1, 2),
268 : },
269 : {
270 : .description = "bottom x up",
271 : .r1 = DRM_RECT_INIT(0, -1, 1, 3),
272 : .r2 = DRM_RECT_INIT(0, 0, 1, 2),
273 : .should_be_visible = true,
274 : .expected_intersection = DRM_RECT_INIT(0, 0, 1, 2),
275 : },
276 : {
277 : .description = "touching corner",
278 : .r1 = DRM_RECT_INIT(0, 0, 1, 1),
279 : .r2 = DRM_RECT_INIT(1, 1, 2, 2),
280 : .should_be_visible = false,
281 : .expected_intersection = DRM_RECT_INIT(1, 1, 0, 0),
282 : },
283 : {
284 : .description = "touching side",
285 : .r1 = DRM_RECT_INIT(0, 0, 1, 1),
286 : .r2 = DRM_RECT_INIT(1, 0, 1, 1),
287 : .should_be_visible = false,
288 : .expected_intersection = DRM_RECT_INIT(1, 0, 0, 1),
289 : },
290 : {
291 : .description = "equal rects",
292 : .r1 = DRM_RECT_INIT(0, 0, 2, 2),
293 : .r2 = DRM_RECT_INIT(0, 0, 2, 2),
294 : .should_be_visible = true,
295 : .expected_intersection = DRM_RECT_INIT(0, 0, 2, 2),
296 : },
297 : {
298 : .description = "inside another",
299 : .r1 = DRM_RECT_INIT(0, 0, 2, 2),
300 : .r2 = DRM_RECT_INIT(1, 1, 1, 1),
301 : .should_be_visible = true,
302 : .expected_intersection = DRM_RECT_INIT(1, 1, 1, 1),
303 : },
304 : {
305 : .description = "far away",
306 : .r1 = DRM_RECT_INIT(0, 0, 1, 1),
307 : .r2 = DRM_RECT_INIT(3, 6, 1, 1),
308 : .should_be_visible = false,
309 : .expected_intersection = DRM_RECT_INIT(3, 6, -2, -5),
310 : },
311 : {
312 : .description = "points intersecting",
313 : .r1 = DRM_RECT_INIT(5, 10, 0, 0),
314 : .r2 = DRM_RECT_INIT(5, 10, 0, 0),
315 : .should_be_visible = false,
316 : .expected_intersection = DRM_RECT_INIT(5, 10, 0, 0),
317 : },
318 : {
319 : .description = "points not intersecting",
320 : .r1 = DRM_RECT_INIT(0, 0, 0, 0),
321 : .r2 = DRM_RECT_INIT(5, 10, 0, 0),
322 : .should_be_visible = false,
323 : .expected_intersection = DRM_RECT_INIT(5, 10, -5, -10),
324 : },
325 : };
326 :
327 0 : static void drm_rect_intersect_case_desc(const struct drm_rect_intersect_case *t, char *desc)
328 : {
329 0 : snprintf(desc, KUNIT_PARAM_DESC_SIZE,
330 : "%s: " DRM_RECT_FMT " x " DRM_RECT_FMT,
331 : t->description, DRM_RECT_ARG(&t->r1), DRM_RECT_ARG(&t->r2));
332 0 : }
333 :
334 0 : KUNIT_ARRAY_PARAM(drm_rect_intersect, drm_rect_intersect_cases, drm_rect_intersect_case_desc);
335 :
336 0 : static void drm_test_rect_intersect(struct kunit *test)
337 : {
338 0 : const struct drm_rect_intersect_case *params = test->param_value;
339 0 : struct drm_rect r1_aux = params->r1;
340 : bool visible;
341 :
342 0 : visible = drm_rect_intersect(&r1_aux, ¶ms->r2);
343 :
344 0 : KUNIT_EXPECT_EQ(test, visible, params->should_be_visible);
345 0 : drm_rect_compare(test, &r1_aux, ¶ms->expected_intersection);
346 0 : }
347 :
348 : struct drm_rect_scale_case {
349 : const char *name;
350 : struct drm_rect src, dst;
351 : int min_range, max_range;
352 : int expected_scaling_factor;
353 : };
354 :
355 : static const struct drm_rect_scale_case drm_rect_scale_cases[] = {
356 : {
357 : .name = "normal use",
358 : .src = DRM_RECT_INIT(0, 0, 2 << 16, 2 << 16),
359 : .dst = DRM_RECT_INIT(0, 0, 1 << 16, 1 << 16),
360 : .min_range = 0, .max_range = INT_MAX,
361 : .expected_scaling_factor = 2,
362 : },
363 : {
364 : .name = "out of max range",
365 : .src = DRM_RECT_INIT(0, 0, 10 << 16, 10 << 16),
366 : .dst = DRM_RECT_INIT(0, 0, 1 << 16, 1 << 16),
367 : .min_range = 3, .max_range = 5,
368 : .expected_scaling_factor = -ERANGE,
369 : },
370 : {
371 : .name = "out of min range",
372 : .src = DRM_RECT_INIT(0, 0, 2 << 16, 2 << 16),
373 : .dst = DRM_RECT_INIT(0, 0, 1 << 16, 1 << 16),
374 : .min_range = 3, .max_range = 5,
375 : .expected_scaling_factor = -ERANGE,
376 : },
377 : {
378 : .name = "zero dst",
379 : .src = DRM_RECT_INIT(0, 0, 2 << 16, 2 << 16),
380 : .dst = DRM_RECT_INIT(0, 0, 0 << 16, 0 << 16),
381 : .min_range = 0, .max_range = INT_MAX,
382 : .expected_scaling_factor = 0,
383 : },
384 : {
385 : .name = "negative src",
386 : .src = DRM_RECT_INIT(0, 0, -(1 << 16), -(1 << 16)),
387 : .dst = DRM_RECT_INIT(0, 0, 1 << 16, 1 << 16),
388 : .min_range = 0, .max_range = INT_MAX,
389 : .expected_scaling_factor = -EINVAL,
390 : },
391 : {
392 : .name = "negative dst",
393 : .src = DRM_RECT_INIT(0, 0, 1 << 16, 1 << 16),
394 : .dst = DRM_RECT_INIT(0, 0, -(1 << 16), -(1 << 16)),
395 : .min_range = 0, .max_range = INT_MAX,
396 : .expected_scaling_factor = -EINVAL,
397 : },
398 : };
399 :
400 0 : static void drm_rect_scale_case_desc(const struct drm_rect_scale_case *t, char *desc)
401 : {
402 0 : strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE);
403 0 : }
404 :
405 0 : KUNIT_ARRAY_PARAM(drm_rect_scale, drm_rect_scale_cases, drm_rect_scale_case_desc);
406 :
407 0 : static void drm_test_rect_calc_hscale(struct kunit *test)
408 : {
409 0 : const struct drm_rect_scale_case *params = test->param_value;
410 : int scaling_factor;
411 :
412 0 : scaling_factor = drm_rect_calc_hscale(¶ms->src, ¶ms->dst,
413 : params->min_range, params->max_range);
414 :
415 0 : KUNIT_EXPECT_EQ(test, scaling_factor, params->expected_scaling_factor);
416 0 : }
417 :
418 0 : static void drm_test_rect_calc_vscale(struct kunit *test)
419 : {
420 0 : const struct drm_rect_scale_case *params = test->param_value;
421 : int scaling_factor;
422 :
423 0 : scaling_factor = drm_rect_calc_vscale(¶ms->src, ¶ms->dst,
424 : params->min_range, params->max_range);
425 :
426 0 : KUNIT_EXPECT_EQ(test, scaling_factor, params->expected_scaling_factor);
427 0 : }
428 :
429 : struct drm_rect_rotate_case {
430 : const char *name;
431 : unsigned int rotation;
432 : struct drm_rect rect;
433 : int width, height;
434 : struct drm_rect expected;
435 : };
436 :
437 : static const struct drm_rect_rotate_case drm_rect_rotate_cases[] = {
438 : {
439 : .name = "reflect-x",
440 : .rotation = DRM_MODE_REFLECT_X,
441 : .rect = DRM_RECT_INIT(0, 0, 5, 5),
442 : .width = 5, .height = 10,
443 : .expected = DRM_RECT_INIT(0, 0, 5, 5),
444 : },
445 : {
446 : .name = "reflect-y",
447 : .rotation = DRM_MODE_REFLECT_Y,
448 : .rect = DRM_RECT_INIT(2, 0, 5, 5),
449 : .width = 5, .height = 10,
450 : .expected = DRM_RECT_INIT(2, 5, 5, 5),
451 : },
452 : {
453 : .name = "rotate-0",
454 : .rotation = DRM_MODE_ROTATE_0,
455 : .rect = DRM_RECT_INIT(0, 2, 5, 5),
456 : .width = 5, .height = 10,
457 : .expected = DRM_RECT_INIT(0, 2, 5, 5),
458 : },
459 : {
460 : .name = "rotate-90",
461 : .rotation = DRM_MODE_ROTATE_90,
462 : .rect = DRM_RECT_INIT(0, 0, 5, 10),
463 : .width = 5, .height = 10,
464 : .expected = DRM_RECT_INIT(0, 0, 10, 5),
465 : },
466 : {
467 : .name = "rotate-180",
468 : .rotation = DRM_MODE_ROTATE_180,
469 : .rect = DRM_RECT_INIT(11, 3, 5, 10),
470 : .width = 5, .height = 10,
471 : .expected = DRM_RECT_INIT(-11, -3, 5, 10),
472 : },
473 : {
474 : .name = "rotate-270",
475 : .rotation = DRM_MODE_ROTATE_270,
476 : .rect = DRM_RECT_INIT(6, 3, 5, 10),
477 : .width = 5, .height = 10,
478 : .expected = DRM_RECT_INIT(-3, 6, 10, 5),
479 : },
480 : };
481 :
482 0 : static void drm_rect_rotate_case_desc(const struct drm_rect_rotate_case *t, char *desc)
483 : {
484 0 : strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE);
485 0 : }
486 :
487 0 : KUNIT_ARRAY_PARAM(drm_rect_rotate, drm_rect_rotate_cases, drm_rect_rotate_case_desc);
488 :
489 0 : static void drm_test_rect_rotate(struct kunit *test)
490 : {
491 0 : const struct drm_rect_rotate_case *params = test->param_value;
492 0 : struct drm_rect r = params->rect;
493 :
494 0 : drm_rect_rotate(&r, params->width, params->height, params->rotation);
495 :
496 0 : drm_rect_compare(test, &r, ¶ms->expected);
497 0 : }
498 :
499 0 : static void drm_test_rect_rotate_inv(struct kunit *test)
500 : {
501 0 : const struct drm_rect_rotate_case *params = test->param_value;
502 0 : struct drm_rect r = params->expected;
503 :
504 0 : drm_rect_rotate_inv(&r, params->width, params->height, params->rotation);
505 :
506 0 : drm_rect_compare(test, &r, ¶ms->rect);
507 0 : }
508 :
509 : static struct kunit_case drm_rect_tests[] = {
510 : KUNIT_CASE(drm_test_rect_clip_scaled_div_by_zero),
511 : KUNIT_CASE(drm_test_rect_clip_scaled_not_clipped),
512 : KUNIT_CASE(drm_test_rect_clip_scaled_clipped),
513 : KUNIT_CASE(drm_test_rect_clip_scaled_signed_vs_unsigned),
514 : KUNIT_CASE_PARAM(drm_test_rect_intersect, drm_rect_intersect_gen_params),
515 : KUNIT_CASE_PARAM(drm_test_rect_calc_hscale, drm_rect_scale_gen_params),
516 : KUNIT_CASE_PARAM(drm_test_rect_calc_vscale, drm_rect_scale_gen_params),
517 : KUNIT_CASE_PARAM(drm_test_rect_rotate, drm_rect_rotate_gen_params),
518 : KUNIT_CASE_PARAM(drm_test_rect_rotate_inv, drm_rect_rotate_gen_params),
519 : { }
520 : };
521 :
522 : static struct kunit_suite drm_rect_test_suite = {
523 : .name = "drm_rect",
524 : .test_cases = drm_rect_tests,
525 : };
526 :
527 : kunit_test_suite(drm_rect_test_suite);
528 :
529 : MODULE_LICENSE("GPL");
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