Commit | Line | Data |
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43968d7b DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
b88ac005 DV |
23 | #include <linux/slab.h> |
24 | #include <linux/uaccess.h> | |
25 | ||
43968d7b | 26 | #include <drm/drm_plane.h> |
b88ac005 DV |
27 | #include <drm/drm_drv.h> |
28 | #include <drm/drm_print.h> | |
29 | #include <drm/drm_framebuffer.h> | |
30 | #include <drm/drm_file.h> | |
31 | #include <drm/drm_crtc.h> | |
32 | #include <drm/drm_fourcc.h> | |
0a1b813f | 33 | #include <drm/drm_managed.h> |
b88ac005 | 34 | #include <drm/drm_vblank.h> |
43968d7b DV |
35 | |
36 | #include "drm_crtc_internal.h" | |
37 | ||
532b3671 DV |
38 | /** |
39 | * DOC: overview | |
40 | * | |
0ae865ef | 41 | * A plane represents an image source that can be blended with or overlaid on |
532b3671 DV |
42 | * top of a CRTC during the scanout process. Planes take their input data from a |
43 | * &drm_framebuffer object. The plane itself specifies the cropping and scaling | |
a3d0d834 | 44 | * of that image, and where it is placed on the visible area of a display |
532b3671 DV |
45 | * pipeline, represented by &drm_crtc. A plane can also have additional |
46 | * properties that specify how the pixels are positioned and blended, like | |
47 | * rotation or Z-position. All these properties are stored in &drm_plane_state. | |
48 | * | |
49 | * To create a plane, a KMS drivers allocates and zeroes an instances of | |
ea0dd85a | 50 | * &struct drm_plane (possibly as part of a larger structure) and registers it |
532b3671 DV |
51 | * with a call to drm_universal_plane_init(). |
52 | * | |
97ecfff4 SS |
53 | * Each plane has a type, see enum drm_plane_type. A plane can be compatible |
54 | * with multiple CRTCs, see &drm_plane.possible_crtcs. | |
9999587b | 55 | * |
96962e3d SS |
56 | * Each CRTC must have a unique primary plane userspace can attach to enable |
57 | * the CRTC. In other words, userspace must be able to attach a different | |
58 | * primary plane to each CRTC at the same time. Primary planes can still be | |
59 | * compatible with multiple CRTCs. There must be exactly as many primary planes | |
60 | * as there are CRTCs. | |
61 | * | |
9999587b SS |
62 | * Legacy uAPI doesn't expose the primary and cursor planes directly. DRM core |
63 | * relies on the driver to set the primary and optionally the cursor plane used | |
64 | * for legacy IOCTLs. This is done by calling drm_crtc_init_with_planes(). All | |
2200736a | 65 | * drivers must provide one primary plane per CRTC to avoid surprising legacy |
9999587b | 66 | * userspace too much. |
532b3671 DV |
67 | */ |
68 | ||
77a71abb SS |
69 | /** |
70 | * DOC: standard plane properties | |
71 | * | |
72 | * DRM planes have a few standardized properties: | |
73 | * | |
97ecfff4 SS |
74 | * type: |
75 | * Immutable property describing the type of the plane. | |
76 | * | |
77 | * For user-space which has enabled the &DRM_CLIENT_CAP_ATOMIC capability, | |
78 | * the plane type is just a hint and is mostly superseded by atomic | |
79 | * test-only commits. The type hint can still be used to come up more | |
80 | * easily with a plane configuration accepted by the driver. | |
81 | * | |
82 | * The value of this property can be one of the following: | |
83 | * | |
84 | * "Primary": | |
85 | * To light up a CRTC, attaching a primary plane is the most likely to | |
86 | * work if it covers the whole CRTC and doesn't have scaling or | |
87 | * cropping set up. | |
88 | * | |
89 | * Drivers may support more features for the primary plane, user-space | |
90 | * can find out with test-only atomic commits. | |
91 | * | |
92 | * Some primary planes are implicitly used by the kernel in the legacy | |
93 | * IOCTLs &DRM_IOCTL_MODE_SETCRTC and &DRM_IOCTL_MODE_PAGE_FLIP. | |
94 | * Therefore user-space must not mix explicit usage of any primary | |
95 | * plane (e.g. through an atomic commit) with these legacy IOCTLs. | |
96 | * | |
97 | * "Cursor": | |
98 | * To enable this plane, using a framebuffer configured without scaling | |
99 | * or cropping and with the following properties is the most likely to | |
100 | * work: | |
101 | * | |
102 | * - If the driver provides the capabilities &DRM_CAP_CURSOR_WIDTH and | |
103 | * &DRM_CAP_CURSOR_HEIGHT, create the framebuffer with this size. | |
104 | * Otherwise, create a framebuffer with the size 64x64. | |
105 | * - If the driver doesn't support modifiers, create a framebuffer with | |
106 | * a linear layout. Otherwise, use the IN_FORMATS plane property. | |
107 | * | |
108 | * Drivers may support more features for the cursor plane, user-space | |
109 | * can find out with test-only atomic commits. | |
110 | * | |
111 | * Some cursor planes are implicitly used by the kernel in the legacy | |
112 | * IOCTLs &DRM_IOCTL_MODE_CURSOR and &DRM_IOCTL_MODE_CURSOR2. | |
113 | * Therefore user-space must not mix explicit usage of any cursor | |
114 | * plane (e.g. through an atomic commit) with these legacy IOCTLs. | |
115 | * | |
116 | * Some drivers may support cursors even if no cursor plane is exposed. | |
117 | * In this case, the legacy cursor IOCTLs can be used to configure the | |
118 | * cursor. | |
119 | * | |
120 | * "Overlay": | |
121 | * Neither primary nor cursor. | |
122 | * | |
123 | * Overlay planes are the only planes exposed when the | |
124 | * &DRM_CLIENT_CAP_UNIVERSAL_PLANES capability is disabled. | |
125 | * | |
77a71abb SS |
126 | * IN_FORMATS: |
127 | * Blob property which contains the set of buffer format and modifier | |
a7ecf003 SS |
128 | * pairs supported by this plane. The blob is a struct |
129 | * drm_format_modifier_blob. Without this property the plane doesn't | |
130 | * support buffers with modifiers. Userspace cannot change this property. | |
bfebd42d DV |
131 | * |
132 | * Note that userspace can check the &DRM_CAP_ADDFB2_MODIFIERS driver | |
133 | * capability for general modifier support. If this flag is set then every | |
134 | * plane will have the IN_FORMATS property, even when it only supports | |
135 | * DRM_FORMAT_MOD_LINEAR. Before linux kernel release v5.1 there have been | |
136 | * various bugs in this area with inconsistencies between the capability | |
137 | * flag and per-plane properties. | |
77a71abb SS |
138 | */ |
139 | ||
43968d7b DV |
140 | static unsigned int drm_num_planes(struct drm_device *dev) |
141 | { | |
142 | unsigned int num = 0; | |
143 | struct drm_plane *tmp; | |
144 | ||
145 | drm_for_each_plane(tmp, dev) { | |
146 | num++; | |
147 | } | |
148 | ||
149 | return num; | |
150 | } | |
151 | ||
db1689aa BW |
152 | static inline u32 * |
153 | formats_ptr(struct drm_format_modifier_blob *blob) | |
154 | { | |
155 | return (u32 *)(((char *)blob) + blob->formats_offset); | |
156 | } | |
157 | ||
158 | static inline struct drm_format_modifier * | |
159 | modifiers_ptr(struct drm_format_modifier_blob *blob) | |
160 | { | |
161 | return (struct drm_format_modifier *)(((char *)blob) + blob->modifiers_offset); | |
162 | } | |
163 | ||
164 | static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane) | |
165 | { | |
166 | const struct drm_mode_config *config = &dev->mode_config; | |
167 | struct drm_property_blob *blob; | |
168 | struct drm_format_modifier *mod; | |
169 | size_t blob_size, formats_size, modifiers_size; | |
170 | struct drm_format_modifier_blob *blob_data; | |
171 | unsigned int i, j; | |
172 | ||
173 | formats_size = sizeof(__u32) * plane->format_count; | |
174 | if (WARN_ON(!formats_size)) { | |
175 | /* 0 formats are never expected */ | |
176 | return 0; | |
177 | } | |
178 | ||
179 | modifiers_size = | |
180 | sizeof(struct drm_format_modifier) * plane->modifier_count; | |
181 | ||
182 | blob_size = sizeof(struct drm_format_modifier_blob); | |
183 | /* Modifiers offset is a pointer to a struct with a 64 bit field so it | |
184 | * should be naturally aligned to 8B. | |
185 | */ | |
186 | BUILD_BUG_ON(sizeof(struct drm_format_modifier_blob) % 8); | |
187 | blob_size += ALIGN(formats_size, 8); | |
188 | blob_size += modifiers_size; | |
189 | ||
190 | blob = drm_property_create_blob(dev, blob_size, NULL); | |
191 | if (IS_ERR(blob)) | |
192 | return -1; | |
193 | ||
11b83e3f | 194 | blob_data = blob->data; |
db1689aa BW |
195 | blob_data->version = FORMAT_BLOB_CURRENT; |
196 | blob_data->count_formats = plane->format_count; | |
197 | blob_data->formats_offset = sizeof(struct drm_format_modifier_blob); | |
198 | blob_data->count_modifiers = plane->modifier_count; | |
199 | ||
200 | blob_data->modifiers_offset = | |
201 | ALIGN(blob_data->formats_offset + formats_size, 8); | |
202 | ||
203 | memcpy(formats_ptr(blob_data), plane->format_types, formats_size); | |
204 | ||
db1689aa BW |
205 | mod = modifiers_ptr(blob_data); |
206 | for (i = 0; i < plane->modifier_count; i++) { | |
207 | for (j = 0; j < plane->format_count; j++) { | |
d14f0c20 JE |
208 | if (!plane->funcs->format_mod_supported || |
209 | plane->funcs->format_mod_supported(plane, | |
db1689aa BW |
210 | plane->format_types[j], |
211 | plane->modifiers[i])) { | |
aadd4148 | 212 | mod->formats |= 1ULL << j; |
db1689aa BW |
213 | } |
214 | } | |
215 | ||
216 | mod->modifier = plane->modifiers[i]; | |
217 | mod->offset = 0; | |
218 | mod->pad = 0; | |
219 | mod++; | |
220 | } | |
221 | ||
db1689aa BW |
222 | drm_object_attach_property(&plane->base, config->modifiers_property, |
223 | blob->base.id); | |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
0a1b813f PZ |
228 | __printf(9, 0) |
229 | static int __drm_universal_plane_init(struct drm_device *dev, | |
230 | struct drm_plane *plane, | |
231 | uint32_t possible_crtcs, | |
232 | const struct drm_plane_funcs *funcs, | |
233 | const uint32_t *formats, | |
234 | unsigned int format_count, | |
235 | const uint64_t *format_modifiers, | |
236 | enum drm_plane_type type, | |
237 | const char *name, va_list ap) | |
43968d7b DV |
238 | { |
239 | struct drm_mode_config *config = &dev->mode_config; | |
8be57683 TE |
240 | static const uint64_t default_modifiers[] = { |
241 | DRM_FORMAT_MOD_LINEAR, | |
242 | }; | |
e6fc3b68 | 243 | unsigned int format_modifier_count = 0; |
43968d7b DV |
244 | int ret; |
245 | ||
2a8d3eac VS |
246 | /* plane index is used with 32bit bitmasks */ |
247 | if (WARN_ON(config->num_total_plane >= 32)) | |
248 | return -EINVAL; | |
249 | ||
4b674dd6 SP |
250 | /* |
251 | * First driver to need more than 64 formats needs to fix this. Each | |
252 | * format is encoded as a bit and the current code only supports a u64. | |
253 | */ | |
254 | if (WARN_ON(format_count > 64)) | |
255 | return -EINVAL; | |
256 | ||
ba1f665f HM |
257 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
258 | (!funcs->atomic_destroy_state || | |
259 | !funcs->atomic_duplicate_state)); | |
260 | ||
2135ea7a | 261 | ret = drm_mode_object_add(dev, &plane->base, DRM_MODE_OBJECT_PLANE); |
43968d7b DV |
262 | if (ret) |
263 | return ret; | |
264 | ||
265 | drm_modeset_lock_init(&plane->mutex); | |
266 | ||
267 | plane->base.properties = &plane->properties; | |
268 | plane->dev = dev; | |
269 | plane->funcs = funcs; | |
270 | plane->format_types = kmalloc_array(format_count, sizeof(uint32_t), | |
271 | GFP_KERNEL); | |
272 | if (!plane->format_types) { | |
273 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
274 | drm_mode_object_unregister(dev, &plane->base); | |
275 | return -ENOMEM; | |
276 | } | |
277 | ||
e6fc3b68 BW |
278 | if (format_modifiers) { |
279 | const uint64_t *temp_modifiers = format_modifiers; | |
948de842 | 280 | |
e6fc3b68 BW |
281 | while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID) |
282 | format_modifier_count++; | |
8be57683 TE |
283 | } else { |
284 | if (!dev->mode_config.fb_modifiers_not_supported) { | |
285 | format_modifiers = default_modifiers; | |
286 | format_modifier_count = ARRAY_SIZE(default_modifiers); | |
287 | } | |
e6fc3b68 BW |
288 | } |
289 | ||
bfebd42d | 290 | /* autoset the cap and check for consistency across all planes */ |
8be57683 TE |
291 | drm_WARN_ON(dev, config->fb_modifiers_not_supported && |
292 | format_modifier_count); | |
890880dd | 293 | |
e6fc3b68 BW |
294 | plane->modifier_count = format_modifier_count; |
295 | plane->modifiers = kmalloc_array(format_modifier_count, | |
296 | sizeof(format_modifiers[0]), | |
297 | GFP_KERNEL); | |
298 | ||
299 | if (format_modifier_count && !plane->modifiers) { | |
300 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
301 | kfree(plane->format_types); | |
302 | drm_mode_object_unregister(dev, &plane->base); | |
303 | return -ENOMEM; | |
304 | } | |
305 | ||
43968d7b | 306 | if (name) { |
43968d7b | 307 | plane->name = kvasprintf(GFP_KERNEL, name, ap); |
43968d7b DV |
308 | } else { |
309 | plane->name = kasprintf(GFP_KERNEL, "plane-%d", | |
310 | drm_num_planes(dev)); | |
311 | } | |
312 | if (!plane->name) { | |
313 | kfree(plane->format_types); | |
e6fc3b68 | 314 | kfree(plane->modifiers); |
43968d7b DV |
315 | drm_mode_object_unregister(dev, &plane->base); |
316 | return -ENOMEM; | |
317 | } | |
318 | ||
319 | memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); | |
320 | plane->format_count = format_count; | |
e6fc3b68 BW |
321 | memcpy(plane->modifiers, format_modifiers, |
322 | format_modifier_count * sizeof(format_modifiers[0])); | |
43968d7b DV |
323 | plane->possible_crtcs = possible_crtcs; |
324 | plane->type = type; | |
325 | ||
326 | list_add_tail(&plane->head, &config->plane_list); | |
327 | plane->index = config->num_total_plane++; | |
43968d7b DV |
328 | |
329 | drm_object_attach_property(&plane->base, | |
330 | config->plane_type_property, | |
331 | plane->type); | |
332 | ||
333 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { | |
334 | drm_object_attach_property(&plane->base, config->prop_fb_id, 0); | |
96260142 | 335 | drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1); |
43968d7b DV |
336 | drm_object_attach_property(&plane->base, config->prop_crtc_id, 0); |
337 | drm_object_attach_property(&plane->base, config->prop_crtc_x, 0); | |
338 | drm_object_attach_property(&plane->base, config->prop_crtc_y, 0); | |
339 | drm_object_attach_property(&plane->base, config->prop_crtc_w, 0); | |
340 | drm_object_attach_property(&plane->base, config->prop_crtc_h, 0); | |
341 | drm_object_attach_property(&plane->base, config->prop_src_x, 0); | |
342 | drm_object_attach_property(&plane->base, config->prop_src_y, 0); | |
343 | drm_object_attach_property(&plane->base, config->prop_src_w, 0); | |
344 | drm_object_attach_property(&plane->base, config->prop_src_h, 0); | |
345 | } | |
346 | ||
8be57683 | 347 | if (format_modifier_count) |
db1689aa BW |
348 | create_in_format_blob(dev, plane); |
349 | ||
43968d7b DV |
350 | return 0; |
351 | } | |
0a1b813f PZ |
352 | |
353 | /** | |
354 | * drm_universal_plane_init - Initialize a new universal plane object | |
355 | * @dev: DRM device | |
356 | * @plane: plane object to init | |
357 | * @possible_crtcs: bitmask of possible CRTCs | |
358 | * @funcs: callbacks for the new plane | |
359 | * @formats: array of supported formats (DRM_FORMAT\_\*) | |
360 | * @format_count: number of elements in @formats | |
361 | * @format_modifiers: array of struct drm_format modifiers terminated by | |
362 | * DRM_FORMAT_MOD_INVALID | |
363 | * @type: type of plane (overlay, primary, cursor) | |
364 | * @name: printf style format string for the plane name, or NULL for default name | |
365 | * | |
366 | * Initializes a plane object of type @type. The &drm_plane_funcs.destroy hook | |
367 | * should call drm_plane_cleanup() and kfree() the plane structure. The plane | |
368 | * structure should not be allocated with devm_kzalloc(). | |
369 | * | |
370 | * Note: consider using drmm_universal_plane_alloc() instead of | |
371 | * drm_universal_plane_init() to let the DRM managed resource infrastructure | |
372 | * take care of cleanup and deallocation. | |
373 | * | |
8be57683 TE |
374 | * Drivers that only support the DRM_FORMAT_MOD_LINEAR modifier support may set |
375 | * @format_modifiers to NULL. The plane will advertise the linear modifier. | |
bfebd42d | 376 | * |
0a1b813f PZ |
377 | * Returns: |
378 | * Zero on success, error code on failure. | |
379 | */ | |
380 | int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
381 | uint32_t possible_crtcs, | |
382 | const struct drm_plane_funcs *funcs, | |
383 | const uint32_t *formats, unsigned int format_count, | |
384 | const uint64_t *format_modifiers, | |
385 | enum drm_plane_type type, | |
386 | const char *name, ...) | |
387 | { | |
388 | va_list ap; | |
389 | int ret; | |
390 | ||
391 | WARN_ON(!funcs->destroy); | |
392 | ||
393 | va_start(ap, name); | |
394 | ret = __drm_universal_plane_init(dev, plane, possible_crtcs, funcs, | |
395 | formats, format_count, format_modifiers, | |
396 | type, name, ap); | |
397 | va_end(ap); | |
398 | return ret; | |
399 | } | |
43968d7b DV |
400 | EXPORT_SYMBOL(drm_universal_plane_init); |
401 | ||
0a1b813f PZ |
402 | static void drmm_universal_plane_alloc_release(struct drm_device *dev, void *ptr) |
403 | { | |
404 | struct drm_plane *plane = ptr; | |
405 | ||
406 | if (WARN_ON(!plane->dev)) | |
407 | return; | |
408 | ||
409 | drm_plane_cleanup(plane); | |
410 | } | |
411 | ||
412 | void *__drmm_universal_plane_alloc(struct drm_device *dev, size_t size, | |
413 | size_t offset, uint32_t possible_crtcs, | |
414 | const struct drm_plane_funcs *funcs, | |
415 | const uint32_t *formats, unsigned int format_count, | |
416 | const uint64_t *format_modifiers, | |
417 | enum drm_plane_type type, | |
418 | const char *name, ...) | |
419 | { | |
420 | void *container; | |
421 | struct drm_plane *plane; | |
422 | va_list ap; | |
423 | int ret; | |
424 | ||
425 | if (WARN_ON(!funcs || funcs->destroy)) | |
426 | return ERR_PTR(-EINVAL); | |
427 | ||
428 | container = drmm_kzalloc(dev, size, GFP_KERNEL); | |
429 | if (!container) | |
430 | return ERR_PTR(-ENOMEM); | |
431 | ||
432 | plane = container + offset; | |
433 | ||
434 | va_start(ap, name); | |
435 | ret = __drm_universal_plane_init(dev, plane, possible_crtcs, funcs, | |
436 | formats, format_count, format_modifiers, | |
437 | type, name, ap); | |
438 | va_end(ap); | |
439 | if (ret) | |
440 | return ERR_PTR(ret); | |
441 | ||
442 | ret = drmm_add_action_or_reset(dev, drmm_universal_plane_alloc_release, | |
443 | plane); | |
444 | if (ret) | |
445 | return ERR_PTR(ret); | |
446 | ||
447 | return container; | |
448 | } | |
449 | EXPORT_SYMBOL(__drmm_universal_plane_alloc); | |
450 | ||
43968d7b DV |
451 | int drm_plane_register_all(struct drm_device *dev) |
452 | { | |
4dc55525 LP |
453 | unsigned int num_planes = 0; |
454 | unsigned int num_zpos = 0; | |
43968d7b DV |
455 | struct drm_plane *plane; |
456 | int ret = 0; | |
457 | ||
458 | drm_for_each_plane(plane, dev) { | |
459 | if (plane->funcs->late_register) | |
460 | ret = plane->funcs->late_register(plane); | |
461 | if (ret) | |
462 | return ret; | |
4dc55525 LP |
463 | |
464 | if (plane->zpos_property) | |
465 | num_zpos++; | |
466 | num_planes++; | |
43968d7b DV |
467 | } |
468 | ||
4dc55525 LP |
469 | drm_WARN(dev, num_zpos && num_planes != num_zpos, |
470 | "Mixing planes with and without zpos property is invalid\n"); | |
471 | ||
43968d7b DV |
472 | return 0; |
473 | } | |
474 | ||
475 | void drm_plane_unregister_all(struct drm_device *dev) | |
476 | { | |
477 | struct drm_plane *plane; | |
478 | ||
479 | drm_for_each_plane(plane, dev) { | |
480 | if (plane->funcs->early_unregister) | |
481 | plane->funcs->early_unregister(plane); | |
482 | } | |
483 | } | |
484 | ||
43968d7b DV |
485 | /** |
486 | * drm_plane_cleanup - Clean up the core plane usage | |
487 | * @plane: plane to cleanup | |
488 | * | |
489 | * This function cleans up @plane and removes it from the DRM mode setting | |
490 | * core. Note that the function does *not* free the plane structure itself, | |
491 | * this is the responsibility of the caller. | |
492 | */ | |
493 | void drm_plane_cleanup(struct drm_plane *plane) | |
494 | { | |
495 | struct drm_device *dev = plane->dev; | |
496 | ||
661a3755 DV |
497 | drm_modeset_lock_fini(&plane->mutex); |
498 | ||
43968d7b | 499 | kfree(plane->format_types); |
e6fc3b68 | 500 | kfree(plane->modifiers); |
43968d7b DV |
501 | drm_mode_object_unregister(dev, &plane->base); |
502 | ||
503 | BUG_ON(list_empty(&plane->head)); | |
504 | ||
505 | /* Note that the plane_list is considered to be static; should we | |
506 | * remove the drm_plane at runtime we would have to decrement all | |
507 | * the indices on the drm_plane after us in the plane_list. | |
508 | */ | |
509 | ||
510 | list_del(&plane->head); | |
511 | dev->mode_config.num_total_plane--; | |
43968d7b DV |
512 | |
513 | WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); | |
514 | if (plane->state && plane->funcs->atomic_destroy_state) | |
515 | plane->funcs->atomic_destroy_state(plane, plane->state); | |
516 | ||
517 | kfree(plane->name); | |
518 | ||
519 | memset(plane, 0, sizeof(*plane)); | |
520 | } | |
521 | EXPORT_SYMBOL(drm_plane_cleanup); | |
522 | ||
523 | /** | |
524 | * drm_plane_from_index - find the registered plane at an index | |
525 | * @dev: DRM device | |
526 | * @idx: index of registered plane to find for | |
527 | * | |
528 | * Given a plane index, return the registered plane from DRM device's | |
931c670d | 529 | * list of planes with matching index. This is the inverse of drm_plane_index(). |
43968d7b DV |
530 | */ |
531 | struct drm_plane * | |
532 | drm_plane_from_index(struct drm_device *dev, int idx) | |
533 | { | |
534 | struct drm_plane *plane; | |
535 | ||
536 | drm_for_each_plane(plane, dev) | |
537 | if (idx == plane->index) | |
538 | return plane; | |
539 | ||
540 | return NULL; | |
541 | } | |
542 | EXPORT_SYMBOL(drm_plane_from_index); | |
543 | ||
544 | /** | |
545 | * drm_plane_force_disable - Forcibly disable a plane | |
546 | * @plane: plane to disable | |
547 | * | |
548 | * Forces the plane to be disabled. | |
549 | * | |
550 | * Used when the plane's current framebuffer is destroyed, | |
551 | * and when restoring fbdev mode. | |
5fbef3ee DV |
552 | * |
553 | * Note that this function is not suitable for atomic drivers, since it doesn't | |
554 | * wire through the lock acquisition context properly and hence can't handle | |
555 | * retries or driver private locks. You probably want to use | |
556 | * drm_atomic_helper_disable_plane() or | |
557 | * drm_atomic_helper_disable_planes_on_crtc() instead. | |
43968d7b DV |
558 | */ |
559 | void drm_plane_force_disable(struct drm_plane *plane) | |
560 | { | |
561 | int ret; | |
562 | ||
563 | if (!plane->fb) | |
564 | return; | |
565 | ||
5fbef3ee DV |
566 | WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); |
567 | ||
43968d7b | 568 | plane->old_fb = plane->fb; |
19315294 | 569 | ret = plane->funcs->disable_plane(plane, NULL); |
43968d7b DV |
570 | if (ret) { |
571 | DRM_ERROR("failed to disable plane with busy fb\n"); | |
572 | plane->old_fb = NULL; | |
573 | return; | |
574 | } | |
575 | /* disconnect the plane from the fb and crtc: */ | |
a4a69da0 | 576 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
577 | plane->old_fb = NULL; |
578 | plane->fb = NULL; | |
579 | plane->crtc = NULL; | |
580 | } | |
581 | EXPORT_SYMBOL(drm_plane_force_disable); | |
582 | ||
583 | /** | |
584 | * drm_mode_plane_set_obj_prop - set the value of a property | |
585 | * @plane: drm plane object to set property value for | |
586 | * @property: property to set | |
587 | * @value: value the property should be set to | |
588 | * | |
589 | * This functions sets a given property on a given plane object. This function | |
590 | * calls the driver's ->set_property callback and changes the software state of | |
591 | * the property if the callback succeeds. | |
592 | * | |
593 | * Returns: | |
594 | * Zero on success, error code on failure. | |
595 | */ | |
596 | int drm_mode_plane_set_obj_prop(struct drm_plane *plane, | |
597 | struct drm_property *property, | |
598 | uint64_t value) | |
599 | { | |
600 | int ret = -EINVAL; | |
601 | struct drm_mode_object *obj = &plane->base; | |
602 | ||
603 | if (plane->funcs->set_property) | |
604 | ret = plane->funcs->set_property(plane, property, value); | |
605 | if (!ret) | |
606 | drm_object_property_set_value(obj, property, value); | |
607 | ||
608 | return ret; | |
609 | } | |
610 | EXPORT_SYMBOL(drm_mode_plane_set_obj_prop); | |
611 | ||
43968d7b DV |
612 | int drm_mode_getplane_res(struct drm_device *dev, void *data, |
613 | struct drm_file *file_priv) | |
614 | { | |
615 | struct drm_mode_get_plane_res *plane_resp = data; | |
43968d7b DV |
616 | struct drm_plane *plane; |
617 | uint32_t __user *plane_ptr; | |
40d86701 | 618 | int count = 0; |
43968d7b DV |
619 | |
620 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 621 | return -EOPNOTSUPP; |
43968d7b | 622 | |
40d86701 | 623 | plane_ptr = u64_to_user_ptr(plane_resp->plane_id_ptr); |
43968d7b DV |
624 | |
625 | /* | |
626 | * This ioctl is called twice, once to determine how much space is | |
627 | * needed, and the 2nd time to fill it. | |
628 | */ | |
40d86701 DA |
629 | drm_for_each_plane(plane, dev) { |
630 | /* | |
631 | * Unless userspace set the 'universal planes' | |
632 | * capability bit, only advertise overlays. | |
633 | */ | |
634 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && | |
635 | !file_priv->universal_planes) | |
636 | continue; | |
637 | ||
7de440db KP |
638 | if (drm_lease_held(file_priv, plane->base.id)) { |
639 | if (count < plane_resp->count_planes && | |
640 | put_user(plane->base.id, plane_ptr + count)) | |
641 | return -EFAULT; | |
642 | count++; | |
643 | } | |
43968d7b | 644 | } |
40d86701 | 645 | plane_resp->count_planes = count; |
43968d7b DV |
646 | |
647 | return 0; | |
648 | } | |
649 | ||
43968d7b DV |
650 | int drm_mode_getplane(struct drm_device *dev, void *data, |
651 | struct drm_file *file_priv) | |
652 | { | |
653 | struct drm_mode_get_plane *plane_resp = data; | |
654 | struct drm_plane *plane; | |
655 | uint32_t __user *format_ptr; | |
656 | ||
657 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 658 | return -EOPNOTSUPP; |
43968d7b | 659 | |
418da172 | 660 | plane = drm_plane_find(dev, file_priv, plane_resp->plane_id); |
43968d7b DV |
661 | if (!plane) |
662 | return -ENOENT; | |
663 | ||
664 | drm_modeset_lock(&plane->mutex, NULL); | |
7de440db | 665 | if (plane->state && plane->state->crtc && drm_lease_held(file_priv, plane->state->crtc->base.id)) |
de7b6be7 | 666 | plane_resp->crtc_id = plane->state->crtc->base.id; |
7de440db | 667 | else if (!plane->state && plane->crtc && drm_lease_held(file_priv, plane->crtc->base.id)) |
43968d7b DV |
668 | plane_resp->crtc_id = plane->crtc->base.id; |
669 | else | |
670 | plane_resp->crtc_id = 0; | |
671 | ||
de7b6be7 DS |
672 | if (plane->state && plane->state->fb) |
673 | plane_resp->fb_id = plane->state->fb->base.id; | |
674 | else if (!plane->state && plane->fb) | |
43968d7b DV |
675 | plane_resp->fb_id = plane->fb->base.id; |
676 | else | |
677 | plane_resp->fb_id = 0; | |
678 | drm_modeset_unlock(&plane->mutex); | |
679 | ||
680 | plane_resp->plane_id = plane->base.id; | |
7de440db KP |
681 | plane_resp->possible_crtcs = drm_lease_filter_crtcs(file_priv, |
682 | plane->possible_crtcs); | |
683 | ||
43968d7b DV |
684 | plane_resp->gamma_size = 0; |
685 | ||
686 | /* | |
687 | * This ioctl is called twice, once to determine how much space is | |
688 | * needed, and the 2nd time to fill it. | |
689 | */ | |
690 | if (plane->format_count && | |
691 | (plane_resp->count_format_types >= plane->format_count)) { | |
692 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; | |
693 | if (copy_to_user(format_ptr, | |
694 | plane->format_types, | |
695 | sizeof(uint32_t) * plane->format_count)) { | |
696 | return -EFAULT; | |
697 | } | |
698 | } | |
699 | plane_resp->count_format_types = plane->format_count; | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
23163a7d VS |
704 | int drm_plane_check_pixel_format(struct drm_plane *plane, |
705 | u32 format, u64 modifier) | |
43968d7b DV |
706 | { |
707 | unsigned int i; | |
708 | ||
709 | for (i = 0; i < plane->format_count; i++) { | |
710 | if (format == plane->format_types[i]) | |
23163a7d | 711 | break; |
43968d7b | 712 | } |
23163a7d VS |
713 | if (i == plane->format_count) |
714 | return -EINVAL; | |
715 | ||
8fb756df EA |
716 | if (plane->funcs->format_mod_supported) { |
717 | if (!plane->funcs->format_mod_supported(plane, format, modifier)) | |
718 | return -EINVAL; | |
719 | } else { | |
720 | if (!plane->modifier_count) | |
721 | return 0; | |
23163a7d | 722 | |
8fb756df EA |
723 | for (i = 0; i < plane->modifier_count; i++) { |
724 | if (modifier == plane->modifiers[i]) | |
725 | break; | |
726 | } | |
727 | if (i == plane->modifier_count) | |
728 | return -EINVAL; | |
23163a7d | 729 | } |
23163a7d VS |
730 | |
731 | return 0; | |
43968d7b DV |
732 | } |
733 | ||
4dd4677c VS |
734 | static int __setplane_check(struct drm_plane *plane, |
735 | struct drm_crtc *crtc, | |
736 | struct drm_framebuffer *fb, | |
737 | int32_t crtc_x, int32_t crtc_y, | |
738 | uint32_t crtc_w, uint32_t crtc_h, | |
739 | uint32_t src_x, uint32_t src_y, | |
740 | uint32_t src_w, uint32_t src_h) | |
741 | { | |
742 | int ret; | |
743 | ||
744 | /* Check whether this plane is usable on this CRTC */ | |
745 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { | |
746 | DRM_DEBUG_KMS("Invalid crtc for plane\n"); | |
747 | return -EINVAL; | |
748 | } | |
749 | ||
750 | /* Check whether this plane supports the fb pixel format. */ | |
751 | ret = drm_plane_check_pixel_format(plane, fb->format->format, | |
752 | fb->modifier); | |
753 | if (ret) { | |
92f1d09c SA |
754 | DRM_DEBUG_KMS("Invalid pixel format %p4cc, modifier 0x%llx\n", |
755 | &fb->format->format, fb->modifier); | |
4dd4677c VS |
756 | return ret; |
757 | } | |
758 | ||
759 | /* Give drivers some help against integer overflows */ | |
760 | if (crtc_w > INT_MAX || | |
761 | crtc_x > INT_MAX - (int32_t) crtc_w || | |
762 | crtc_h > INT_MAX || | |
763 | crtc_y > INT_MAX - (int32_t) crtc_h) { | |
764 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", | |
765 | crtc_w, crtc_h, crtc_x, crtc_y); | |
766 | return -ERANGE; | |
767 | } | |
768 | ||
769 | ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); | |
770 | if (ret) | |
771 | return ret; | |
772 | ||
773 | return 0; | |
774 | } | |
775 | ||
e7afb623 VS |
776 | /** |
777 | * drm_any_plane_has_format - Check whether any plane supports this format and modifier combination | |
778 | * @dev: DRM device | |
779 | * @format: pixel format (DRM_FORMAT_*) | |
780 | * @modifier: data layout modifier | |
781 | * | |
782 | * Returns: | |
783 | * Whether at least one plane supports the specified format and modifier combination. | |
784 | */ | |
785 | bool drm_any_plane_has_format(struct drm_device *dev, | |
786 | u32 format, u64 modifier) | |
787 | { | |
788 | struct drm_plane *plane; | |
789 | ||
790 | drm_for_each_plane(plane, dev) { | |
791 | if (drm_plane_check_pixel_format(plane, format, modifier) == 0) | |
792 | return true; | |
793 | } | |
794 | ||
795 | return false; | |
796 | } | |
797 | EXPORT_SYMBOL(drm_any_plane_has_format); | |
798 | ||
43968d7b | 799 | /* |
ce0769e0 | 800 | * __setplane_internal - setplane handler for internal callers |
43968d7b | 801 | * |
ce0769e0 ML |
802 | * This function will take a reference on the new fb for the plane |
803 | * on success. | |
43968d7b DV |
804 | * |
805 | * src_{x,y,w,h} are provided in 16.16 fixed point format | |
806 | */ | |
807 | static int __setplane_internal(struct drm_plane *plane, | |
808 | struct drm_crtc *crtc, | |
809 | struct drm_framebuffer *fb, | |
810 | int32_t crtc_x, int32_t crtc_y, | |
811 | uint32_t crtc_w, uint32_t crtc_h, | |
812 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
813 | uint32_t src_x, uint32_t src_y, | |
232e8f70 DV |
814 | uint32_t src_w, uint32_t src_h, |
815 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
816 | { |
817 | int ret = 0; | |
818 | ||
e7695eb6 VS |
819 | WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); |
820 | ||
43968d7b DV |
821 | /* No fb means shut it down */ |
822 | if (!fb) { | |
823 | plane->old_fb = plane->fb; | |
19315294 | 824 | ret = plane->funcs->disable_plane(plane, ctx); |
43968d7b DV |
825 | if (!ret) { |
826 | plane->crtc = NULL; | |
827 | plane->fb = NULL; | |
828 | } else { | |
829 | plane->old_fb = NULL; | |
830 | } | |
831 | goto out; | |
832 | } | |
833 | ||
4dd4677c VS |
834 | ret = __setplane_check(plane, crtc, fb, |
835 | crtc_x, crtc_y, crtc_w, crtc_h, | |
836 | src_x, src_y, src_w, src_h); | |
43968d7b DV |
837 | if (ret) |
838 | goto out; | |
839 | ||
840 | plane->old_fb = plane->fb; | |
841 | ret = plane->funcs->update_plane(plane, crtc, fb, | |
842 | crtc_x, crtc_y, crtc_w, crtc_h, | |
34a2ab5e | 843 | src_x, src_y, src_w, src_h, ctx); |
43968d7b | 844 | if (!ret) { |
e7695eb6 VS |
845 | plane->crtc = crtc; |
846 | plane->fb = fb; | |
847 | drm_framebuffer_get(plane->fb); | |
43968d7b DV |
848 | } else { |
849 | plane->old_fb = NULL; | |
850 | } | |
851 | ||
852 | out: | |
43968d7b | 853 | if (plane->old_fb) |
a4a69da0 | 854 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
855 | plane->old_fb = NULL; |
856 | ||
857 | return ret; | |
858 | } | |
859 | ||
e7695eb6 VS |
860 | static int __setplane_atomic(struct drm_plane *plane, |
861 | struct drm_crtc *crtc, | |
862 | struct drm_framebuffer *fb, | |
863 | int32_t crtc_x, int32_t crtc_y, | |
864 | uint32_t crtc_w, uint32_t crtc_h, | |
865 | uint32_t src_x, uint32_t src_y, | |
866 | uint32_t src_w, uint32_t src_h, | |
867 | struct drm_modeset_acquire_ctx *ctx) | |
868 | { | |
869 | int ret; | |
870 | ||
871 | WARN_ON(!drm_drv_uses_atomic_modeset(plane->dev)); | |
872 | ||
873 | /* No fb means shut it down */ | |
874 | if (!fb) | |
875 | return plane->funcs->disable_plane(plane, ctx); | |
876 | ||
877 | /* | |
878 | * FIXME: This is redundant with drm_atomic_plane_check(), | |
879 | * but the legacy cursor/"async" .update_plane() tricks | |
880 | * don't call that so we still need this here. Should remove | |
881 | * this when all .update_plane() implementations have been | |
882 | * fixed to call drm_atomic_plane_check(). | |
883 | */ | |
884 | ret = __setplane_check(plane, crtc, fb, | |
885 | crtc_x, crtc_y, crtc_w, crtc_h, | |
886 | src_x, src_y, src_w, src_h); | |
887 | if (ret) | |
888 | return ret; | |
889 | ||
890 | return plane->funcs->update_plane(plane, crtc, fb, | |
891 | crtc_x, crtc_y, crtc_w, crtc_h, | |
892 | src_x, src_y, src_w, src_h, ctx); | |
893 | } | |
894 | ||
43968d7b DV |
895 | static int setplane_internal(struct drm_plane *plane, |
896 | struct drm_crtc *crtc, | |
897 | struct drm_framebuffer *fb, | |
898 | int32_t crtc_x, int32_t crtc_y, | |
899 | uint32_t crtc_w, uint32_t crtc_h, | |
900 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
901 | uint32_t src_x, uint32_t src_y, | |
902 | uint32_t src_w, uint32_t src_h) | |
903 | { | |
232e8f70 | 904 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
905 | int ret; |
906 | ||
b7ea04d2 SP |
907 | DRM_MODESET_LOCK_ALL_BEGIN(plane->dev, ctx, |
908 | DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret); | |
e7695eb6 VS |
909 | |
910 | if (drm_drv_uses_atomic_modeset(plane->dev)) | |
911 | ret = __setplane_atomic(plane, crtc, fb, | |
912 | crtc_x, crtc_y, crtc_w, crtc_h, | |
913 | src_x, src_y, src_w, src_h, &ctx); | |
914 | else | |
915 | ret = __setplane_internal(plane, crtc, fb, | |
916 | crtc_x, crtc_y, crtc_w, crtc_h, | |
917 | src_x, src_y, src_w, src_h, &ctx); | |
232e8f70 | 918 | |
77ef3857 | 919 | DRM_MODESET_LOCK_ALL_END(plane->dev, ctx, ret); |
43968d7b DV |
920 | |
921 | return ret; | |
922 | } | |
923 | ||
43968d7b DV |
924 | int drm_mode_setplane(struct drm_device *dev, void *data, |
925 | struct drm_file *file_priv) | |
926 | { | |
927 | struct drm_mode_set_plane *plane_req = data; | |
928 | struct drm_plane *plane; | |
929 | struct drm_crtc *crtc = NULL; | |
930 | struct drm_framebuffer *fb = NULL; | |
ce0769e0 | 931 | int ret; |
43968d7b DV |
932 | |
933 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 934 | return -EOPNOTSUPP; |
43968d7b DV |
935 | |
936 | /* | |
937 | * First, find the plane, crtc, and fb objects. If not available, | |
938 | * we don't bother to call the driver. | |
939 | */ | |
418da172 | 940 | plane = drm_plane_find(dev, file_priv, plane_req->plane_id); |
43968d7b DV |
941 | if (!plane) { |
942 | DRM_DEBUG_KMS("Unknown plane ID %d\n", | |
943 | plane_req->plane_id); | |
944 | return -ENOENT; | |
945 | } | |
946 | ||
947 | if (plane_req->fb_id) { | |
418da172 | 948 | fb = drm_framebuffer_lookup(dev, file_priv, plane_req->fb_id); |
43968d7b DV |
949 | if (!fb) { |
950 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", | |
951 | plane_req->fb_id); | |
952 | return -ENOENT; | |
953 | } | |
954 | ||
418da172 | 955 | crtc = drm_crtc_find(dev, file_priv, plane_req->crtc_id); |
43968d7b | 956 | if (!crtc) { |
491ab470 | 957 | drm_framebuffer_put(fb); |
43968d7b DV |
958 | DRM_DEBUG_KMS("Unknown crtc ID %d\n", |
959 | plane_req->crtc_id); | |
960 | return -ENOENT; | |
961 | } | |
962 | } | |
963 | ||
ce0769e0 ML |
964 | ret = setplane_internal(plane, crtc, fb, |
965 | plane_req->crtc_x, plane_req->crtc_y, | |
966 | plane_req->crtc_w, plane_req->crtc_h, | |
967 | plane_req->src_x, plane_req->src_y, | |
968 | plane_req->src_w, plane_req->src_h); | |
969 | ||
970 | if (fb) | |
971 | drm_framebuffer_put(fb); | |
972 | ||
973 | return ret; | |
43968d7b DV |
974 | } |
975 | ||
43968d7b DV |
976 | static int drm_mode_cursor_universal(struct drm_crtc *crtc, |
977 | struct drm_mode_cursor2 *req, | |
b95ff031 DV |
978 | struct drm_file *file_priv, |
979 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
980 | { |
981 | struct drm_device *dev = crtc->dev; | |
64c32b49 | 982 | struct drm_plane *plane = crtc->cursor; |
43968d7b DV |
983 | struct drm_framebuffer *fb = NULL; |
984 | struct drm_mode_fb_cmd2 fbreq = { | |
985 | .width = req->width, | |
986 | .height = req->height, | |
987 | .pixel_format = DRM_FORMAT_ARGB8888, | |
988 | .pitches = { req->width * 4 }, | |
989 | .handles = { req->handle }, | |
990 | }; | |
991 | int32_t crtc_x, crtc_y; | |
992 | uint32_t crtc_w = 0, crtc_h = 0; | |
993 | uint32_t src_w = 0, src_h = 0; | |
994 | int ret = 0; | |
995 | ||
64c32b49 VS |
996 | BUG_ON(!plane); |
997 | WARN_ON(plane->crtc != crtc && plane->crtc != NULL); | |
43968d7b DV |
998 | |
999 | /* | |
1000 | * Obtain fb we'll be using (either new or existing) and take an extra | |
1001 | * reference to it if fb != null. setplane will take care of dropping | |
1002 | * the reference if the plane update fails. | |
1003 | */ | |
1004 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
1005 | if (req->handle) { | |
1006 | fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv); | |
1007 | if (IS_ERR(fb)) { | |
1008 | DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); | |
1009 | return PTR_ERR(fb); | |
1010 | } | |
bf2d5eb9 | 1011 | |
43968d7b DV |
1012 | fb->hot_x = req->hot_x; |
1013 | fb->hot_y = req->hot_y; | |
1014 | } else { | |
1015 | fb = NULL; | |
1016 | } | |
1017 | } else { | |
a36c027d VS |
1018 | if (plane->state) |
1019 | fb = plane->state->fb; | |
1020 | else | |
1021 | fb = plane->fb; | |
1022 | ||
43968d7b | 1023 | if (fb) |
a4a69da0 | 1024 | drm_framebuffer_get(fb); |
43968d7b DV |
1025 | } |
1026 | ||
1027 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
1028 | crtc_x = req->x; | |
1029 | crtc_y = req->y; | |
1030 | } else { | |
1031 | crtc_x = crtc->cursor_x; | |
1032 | crtc_y = crtc->cursor_y; | |
1033 | } | |
1034 | ||
1035 | if (fb) { | |
1036 | crtc_w = fb->width; | |
1037 | crtc_h = fb->height; | |
1038 | src_w = fb->width << 16; | |
1039 | src_h = fb->height << 16; | |
1040 | } | |
1041 | ||
e7695eb6 VS |
1042 | if (drm_drv_uses_atomic_modeset(dev)) |
1043 | ret = __setplane_atomic(plane, crtc, fb, | |
1044 | crtc_x, crtc_y, crtc_w, crtc_h, | |
1045 | 0, 0, src_w, src_h, ctx); | |
1046 | else | |
1047 | ret = __setplane_internal(plane, crtc, fb, | |
1048 | crtc_x, crtc_y, crtc_w, crtc_h, | |
1049 | 0, 0, src_w, src_h, ctx); | |
ce0769e0 ML |
1050 | |
1051 | if (fb) | |
1052 | drm_framebuffer_put(fb); | |
43968d7b DV |
1053 | |
1054 | /* Update successful; save new cursor position, if necessary */ | |
1055 | if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) { | |
1056 | crtc->cursor_x = req->x; | |
1057 | crtc->cursor_y = req->y; | |
1058 | } | |
1059 | ||
1060 | return ret; | |
1061 | } | |
1062 | ||
1063 | static int drm_mode_cursor_common(struct drm_device *dev, | |
1064 | struct drm_mode_cursor2 *req, | |
1065 | struct drm_file *file_priv) | |
1066 | { | |
1067 | struct drm_crtc *crtc; | |
b95ff031 | 1068 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
1069 | int ret = 0; |
1070 | ||
1071 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 1072 | return -EOPNOTSUPP; |
43968d7b DV |
1073 | |
1074 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) | |
1075 | return -EINVAL; | |
1076 | ||
418da172 | 1077 | crtc = drm_crtc_find(dev, file_priv, req->crtc_id); |
43968d7b DV |
1078 | if (!crtc) { |
1079 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); | |
1080 | return -ENOENT; | |
1081 | } | |
1082 | ||
6c886e4a | 1083 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
b95ff031 DV |
1084 | retry: |
1085 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
1086 | if (ret) | |
1087 | goto out; | |
43968d7b DV |
1088 | /* |
1089 | * If this crtc has a universal cursor plane, call that plane's update | |
1090 | * handler rather than using legacy cursor handlers. | |
1091 | */ | |
b95ff031 | 1092 | if (crtc->cursor) { |
2e064163 DV |
1093 | ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx); |
1094 | if (ret) | |
1095 | goto out; | |
1096 | ||
204f640d DV |
1097 | if (!drm_lease_held(file_priv, crtc->cursor->base.id)) { |
1098 | ret = -EACCES; | |
1099 | goto out; | |
1100 | } | |
1101 | ||
b95ff031 DV |
1102 | ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx); |
1103 | goto out; | |
1104 | } | |
43968d7b DV |
1105 | |
1106 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
1107 | if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { | |
1108 | ret = -ENXIO; | |
1109 | goto out; | |
1110 | } | |
1111 | /* Turns off the cursor if handle is 0 */ | |
1112 | if (crtc->funcs->cursor_set2) | |
1113 | ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, | |
1114 | req->width, req->height, req->hot_x, req->hot_y); | |
1115 | else | |
1116 | ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, | |
1117 | req->width, req->height); | |
1118 | } | |
1119 | ||
1120 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
1121 | if (crtc->funcs->cursor_move) { | |
1122 | ret = crtc->funcs->cursor_move(crtc, req->x, req->y); | |
1123 | } else { | |
1124 | ret = -EFAULT; | |
1125 | goto out; | |
1126 | } | |
1127 | } | |
1128 | out: | |
b95ff031 | 1129 | if (ret == -EDEADLK) { |
6c886e4a ML |
1130 | ret = drm_modeset_backoff(&ctx); |
1131 | if (!ret) | |
1132 | goto retry; | |
b95ff031 DV |
1133 | } |
1134 | ||
1135 | drm_modeset_drop_locks(&ctx); | |
1136 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
1137 | |
1138 | return ret; | |
1139 | ||
1140 | } | |
1141 | ||
1142 | ||
43968d7b DV |
1143 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
1144 | void *data, struct drm_file *file_priv) | |
1145 | { | |
1146 | struct drm_mode_cursor *req = data; | |
1147 | struct drm_mode_cursor2 new_req; | |
1148 | ||
1149 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); | |
1150 | new_req.hot_x = new_req.hot_y = 0; | |
1151 | ||
1152 | return drm_mode_cursor_common(dev, &new_req, file_priv); | |
1153 | } | |
1154 | ||
532b3671 | 1155 | /* |
43968d7b DV |
1156 | * Set the cursor configuration based on user request. This implements the 2nd |
1157 | * version of the cursor ioctl, which allows userspace to additionally specify | |
1158 | * the hotspot of the pointer. | |
43968d7b DV |
1159 | */ |
1160 | int drm_mode_cursor2_ioctl(struct drm_device *dev, | |
1161 | void *data, struct drm_file *file_priv) | |
1162 | { | |
1163 | struct drm_mode_cursor2 *req = data; | |
1164 | ||
1165 | return drm_mode_cursor_common(dev, req, file_priv); | |
1166 | } | |
1167 | ||
43968d7b DV |
1168 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
1169 | void *data, struct drm_file *file_priv) | |
1170 | { | |
1171 | struct drm_mode_crtc_page_flip_target *page_flip = data; | |
1172 | struct drm_crtc *crtc; | |
64c32b49 | 1173 | struct drm_plane *plane; |
a36c027d | 1174 | struct drm_framebuffer *fb = NULL, *old_fb; |
43968d7b DV |
1175 | struct drm_pending_vblank_event *e = NULL; |
1176 | u32 target_vblank = page_flip->sequence; | |
29dc0d1d | 1177 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
1178 | int ret = -EINVAL; |
1179 | ||
1180 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
69fdf420 | 1181 | return -EOPNOTSUPP; |
43968d7b DV |
1182 | |
1183 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS) | |
1184 | return -EINVAL; | |
1185 | ||
1186 | if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) | |
1187 | return -EINVAL; | |
1188 | ||
1189 | /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags | |
1190 | * can be specified | |
1191 | */ | |
1192 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET) | |
1193 | return -EINVAL; | |
1194 | ||
1195 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) | |
1196 | return -EINVAL; | |
1197 | ||
418da172 | 1198 | crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id); |
43968d7b DV |
1199 | if (!crtc) |
1200 | return -ENOENT; | |
1201 | ||
64c32b49 VS |
1202 | plane = crtc->primary; |
1203 | ||
204f640d DV |
1204 | if (!drm_lease_held(file_priv, plane->base.id)) |
1205 | return -EACCES; | |
1206 | ||
2adb29b1 DV |
1207 | if (crtc->funcs->page_flip_target) { |
1208 | u32 current_vblank; | |
1209 | int r; | |
1210 | ||
1211 | r = drm_crtc_vblank_get(crtc); | |
1212 | if (r) | |
1213 | return r; | |
1214 | ||
f4c0468e | 1215 | current_vblank = (u32)drm_crtc_vblank_count(crtc); |
2adb29b1 DV |
1216 | |
1217 | switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) { | |
1218 | case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE: | |
1219 | if ((int)(target_vblank - current_vblank) > 1) { | |
1220 | DRM_DEBUG("Invalid absolute flip target %u, " | |
1221 | "must be <= %u\n", target_vblank, | |
1222 | current_vblank + 1); | |
1223 | drm_crtc_vblank_put(crtc); | |
1224 | return -EINVAL; | |
1225 | } | |
1226 | break; | |
1227 | case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE: | |
1228 | if (target_vblank != 0 && target_vblank != 1) { | |
1229 | DRM_DEBUG("Invalid relative flip target %u, " | |
1230 | "must be 0 or 1\n", target_vblank); | |
1231 | drm_crtc_vblank_put(crtc); | |
1232 | return -EINVAL; | |
1233 | } | |
1234 | target_vblank += current_vblank; | |
1235 | break; | |
1236 | default: | |
1237 | target_vblank = current_vblank + | |
1238 | !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC); | |
1239 | break; | |
1240 | } | |
1241 | } else if (crtc->funcs->page_flip == NULL || | |
1242 | (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) { | |
1243 | return -EINVAL; | |
1244 | } | |
1245 | ||
c2e4ff34 | 1246 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
29dc0d1d DV |
1247 | retry: |
1248 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
1249 | if (ret) | |
1250 | goto out; | |
64c32b49 | 1251 | ret = drm_modeset_lock(&plane->mutex, &ctx); |
29dc0d1d DV |
1252 | if (ret) |
1253 | goto out; | |
29dc0d1d | 1254 | |
a36c027d VS |
1255 | if (plane->state) |
1256 | old_fb = plane->state->fb; | |
1257 | else | |
1258 | old_fb = plane->fb; | |
1259 | ||
1260 | if (old_fb == NULL) { | |
43968d7b DV |
1261 | /* The framebuffer is currently unbound, presumably |
1262 | * due to a hotplug event, that userspace has not | |
1263 | * yet discovered. | |
1264 | */ | |
1265 | ret = -EBUSY; | |
1266 | goto out; | |
1267 | } | |
1268 | ||
418da172 | 1269 | fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id); |
43968d7b DV |
1270 | if (!fb) { |
1271 | ret = -ENOENT; | |
1272 | goto out; | |
1273 | } | |
1274 | ||
a36c027d | 1275 | if (plane->state) { |
64c32b49 | 1276 | const struct drm_plane_state *state = plane->state; |
43968d7b DV |
1277 | |
1278 | ret = drm_framebuffer_check_src_coords(state->src_x, | |
1279 | state->src_y, | |
1280 | state->src_w, | |
1281 | state->src_h, | |
1282 | fb); | |
1283 | } else { | |
bf2d5eb9 VS |
1284 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, |
1285 | &crtc->mode, fb); | |
43968d7b DV |
1286 | } |
1287 | if (ret) | |
1288 | goto out; | |
1289 | ||
a5e92ef3 BN |
1290 | /* |
1291 | * Only check the FOURCC format code, excluding modifiers. This is | |
1292 | * enough for all legacy drivers. Atomic drivers have their own | |
1293 | * checks in their ->atomic_check implementation, which will | |
1294 | * return -EINVAL if any hw or driver constraint is violated due | |
1295 | * to modifier changes. | |
1296 | */ | |
1297 | if (old_fb->format->format != fb->format->format) { | |
43968d7b DV |
1298 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); |
1299 | ret = -EINVAL; | |
1300 | goto out; | |
1301 | } | |
1302 | ||
1303 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1304 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
1305 | if (!e) { | |
1306 | ret = -ENOMEM; | |
1307 | goto out; | |
1308 | } | |
bf2d5eb9 | 1309 | |
43968d7b DV |
1310 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; |
1311 | e->event.base.length = sizeof(e->event); | |
bd386e51 | 1312 | e->event.vbl.user_data = page_flip->user_data; |
b8a3365a | 1313 | e->event.vbl.crtc_id = crtc->base.id; |
bf2d5eb9 | 1314 | |
43968d7b DV |
1315 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); |
1316 | if (ret) { | |
1317 | kfree(e); | |
031e5896 | 1318 | e = NULL; |
43968d7b DV |
1319 | goto out; |
1320 | } | |
1321 | } | |
1322 | ||
64c32b49 | 1323 | plane->old_fb = plane->fb; |
43968d7b DV |
1324 | if (crtc->funcs->page_flip_target) |
1325 | ret = crtc->funcs->page_flip_target(crtc, fb, e, | |
1326 | page_flip->flags, | |
41292b1f DV |
1327 | target_vblank, |
1328 | &ctx); | |
43968d7b | 1329 | else |
41292b1f DV |
1330 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags, |
1331 | &ctx); | |
43968d7b DV |
1332 | if (ret) { |
1333 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) | |
1334 | drm_event_cancel_free(dev, &e->base); | |
1335 | /* Keep the old fb, don't unref it. */ | |
64c32b49 | 1336 | plane->old_fb = NULL; |
43968d7b | 1337 | } else { |
e00fb856 VS |
1338 | if (!plane->state) { |
1339 | plane->fb = fb; | |
1340 | drm_framebuffer_get(fb); | |
1341 | } | |
43968d7b DV |
1342 | } |
1343 | ||
1344 | out: | |
e86fa21b | 1345 | if (fb) |
a4a69da0 | 1346 | drm_framebuffer_put(fb); |
64c32b49 VS |
1347 | if (plane->old_fb) |
1348 | drm_framebuffer_put(plane->old_fb); | |
1349 | plane->old_fb = NULL; | |
29dc0d1d DV |
1350 | |
1351 | if (ret == -EDEADLK) { | |
c2e4ff34 ML |
1352 | ret = drm_modeset_backoff(&ctx); |
1353 | if (!ret) | |
1354 | goto retry; | |
29dc0d1d DV |
1355 | } |
1356 | ||
1357 | drm_modeset_drop_locks(&ctx); | |
1358 | drm_modeset_acquire_fini(&ctx); | |
43968d7b | 1359 | |
f9285434 DV |
1360 | if (ret && crtc->funcs->page_flip_target) |
1361 | drm_crtc_vblank_put(crtc); | |
1362 | ||
43968d7b DV |
1363 | return ret; |
1364 | } | |
5c759eda | 1365 | |
ba6cd766 DV |
1366 | /** |
1367 | * DOC: damage tracking | |
1368 | * | |
1369 | * FB_DAMAGE_CLIPS is an optional plane property which provides a means to | |
1370 | * specify a list of damage rectangles on a plane in framebuffer coordinates of | |
1371 | * the framebuffer attached to the plane. In current context damage is the area | |
1372 | * of plane framebuffer that has changed since last plane update (also called | |
1373 | * page-flip), irrespective of whether currently attached framebuffer is same as | |
1374 | * framebuffer attached during last plane update or not. | |
1375 | * | |
1376 | * FB_DAMAGE_CLIPS is a hint to kernel which could be helpful for some drivers | |
1377 | * to optimize internally especially for virtual devices where each framebuffer | |
1378 | * change needs to be transmitted over network, usb, etc. | |
1379 | * | |
1380 | * Since FB_DAMAGE_CLIPS is a hint so it is an optional property. User-space can | |
1381 | * ignore damage clips property and in that case driver will do a full plane | |
1382 | * update. In case damage clips are provided then it is guaranteed that the area | |
1383 | * inside damage clips will be updated to plane. For efficiency driver can do | |
1384 | * full update or can update more than specified in damage clips. Since driver | |
1385 | * is free to read more, user-space must always render the entire visible | |
1386 | * framebuffer. Otherwise there can be corruptions. Also, if a user-space | |
1387 | * provides damage clips which doesn't encompass the actual damage to | |
1388 | * framebuffer (since last plane update) can result in incorrect rendering. | |
1389 | * | |
1390 | * FB_DAMAGE_CLIPS is a blob property with the layout of blob data is simply an | |
1391 | * array of &drm_mode_rect. Unlike plane &drm_plane_state.src coordinates, | |
1392 | * damage clips are not in 16.16 fixed point. Similar to plane src in | |
1393 | * framebuffer, damage clips cannot be negative. In damage clip, x1/y1 are | |
1394 | * inclusive and x2/y2 are exclusive. While kernel does not error for overlapped | |
1395 | * damage clips, it is strongly discouraged. | |
1396 | * | |
1397 | * Drivers that are interested in damage interface for plane should enable | |
1398 | * FB_DAMAGE_CLIPS property by calling drm_plane_enable_fb_damage_clips(). | |
1399 | * Drivers implementing damage can use drm_atomic_helper_damage_iter_init() and | |
1400 | * drm_atomic_helper_damage_iter_next() helper iterator function to get damage | |
1401 | * rectangles clipped to &drm_plane_state.src. | |
1402 | */ | |
1403 | ||
1404 | /** | |
1405 | * drm_plane_enable_fb_damage_clips - Enables plane fb damage clips property. | |
1406 | * @plane: Plane on which to enable damage clips property. | |
1407 | * | |
1408 | * This function lets driver to enable the damage clips property on a plane. | |
1409 | */ | |
1410 | void drm_plane_enable_fb_damage_clips(struct drm_plane *plane) | |
1411 | { | |
1412 | struct drm_device *dev = plane->dev; | |
1413 | struct drm_mode_config *config = &dev->mode_config; | |
1414 | ||
1415 | drm_object_attach_property(&plane->base, config->prop_fb_damage_clips, | |
1416 | 0); | |
1417 | } | |
1418 | EXPORT_SYMBOL(drm_plane_enable_fb_damage_clips); | |
1419 | ||
c7fcbf25 DV |
1420 | /** |
1421 | * drm_plane_get_damage_clips_count - Returns damage clips count. | |
1422 | * @state: Plane state. | |
1423 | * | |
1424 | * Simple helper to get the number of &drm_mode_rect clips set by user-space | |
1425 | * during plane update. | |
1426 | * | |
1427 | * Return: Number of clips in plane fb_damage_clips blob property. | |
1428 | */ | |
1429 | unsigned int | |
1430 | drm_plane_get_damage_clips_count(const struct drm_plane_state *state) | |
1431 | { | |
1432 | return (state && state->fb_damage_clips) ? | |
1433 | state->fb_damage_clips->length/sizeof(struct drm_mode_rect) : 0; | |
1434 | } | |
1435 | EXPORT_SYMBOL(drm_plane_get_damage_clips_count); | |
1436 | ||
1437 | struct drm_mode_rect * | |
1438 | __drm_plane_get_damage_clips(const struct drm_plane_state *state) | |
1439 | { | |
1440 | return (struct drm_mode_rect *)((state && state->fb_damage_clips) ? | |
1441 | state->fb_damage_clips->data : NULL); | |
1442 | } | |
1443 | ||
1444 | /** | |
1445 | * drm_plane_get_damage_clips - Returns damage clips. | |
1446 | * @state: Plane state. | |
1447 | * | |
1448 | * Note that this function returns uapi type &drm_mode_rect. Drivers might want | |
1449 | * to use the helper functions drm_atomic_helper_damage_iter_init() and | |
1450 | * drm_atomic_helper_damage_iter_next() or drm_atomic_helper_damage_merged() if | |
1451 | * the driver can only handle a single damage region at most. | |
1452 | * | |
1453 | * Return: Damage clips in plane fb_damage_clips blob property. | |
1454 | */ | |
1455 | struct drm_mode_rect * | |
1456 | drm_plane_get_damage_clips(const struct drm_plane_state *state) | |
1457 | { | |
1458 | struct drm_device *dev = state->plane->dev; | |
1459 | struct drm_mode_config *config = &dev->mode_config; | |
1460 | ||
1461 | /* check that drm_plane_enable_fb_damage_clips() was called */ | |
1462 | if (!drm_mode_obj_find_prop_id(&state->plane->base, | |
1463 | config->prop_fb_damage_clips->base.id)) | |
1464 | drm_warn_once(dev, "drm_plane_enable_fb_damage_clips() not called\n"); | |
1465 | ||
1466 | return __drm_plane_get_damage_clips(state); | |
1467 | } | |
1468 | EXPORT_SYMBOL(drm_plane_get_damage_clips); | |
1469 | ||
5c759eda PB |
1470 | struct drm_property * |
1471 | drm_create_scaling_filter_prop(struct drm_device *dev, | |
1472 | unsigned int supported_filters) | |
1473 | { | |
1474 | struct drm_property *prop; | |
1475 | static const struct drm_prop_enum_list props[] = { | |
1476 | { DRM_SCALING_FILTER_DEFAULT, "Default" }, | |
1477 | { DRM_SCALING_FILTER_NEAREST_NEIGHBOR, "Nearest Neighbor" }, | |
1478 | }; | |
1479 | unsigned int valid_mode_mask = BIT(DRM_SCALING_FILTER_DEFAULT) | | |
1480 | BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR); | |
1481 | int i; | |
1482 | ||
1483 | if (WARN_ON((supported_filters & ~valid_mode_mask) || | |
1484 | ((supported_filters & BIT(DRM_SCALING_FILTER_DEFAULT)) == 0))) | |
1485 | return ERR_PTR(-EINVAL); | |
1486 | ||
1487 | prop = drm_property_create(dev, DRM_MODE_PROP_ENUM, | |
1488 | "SCALING_FILTER", | |
1489 | hweight32(supported_filters)); | |
1490 | if (!prop) | |
1491 | return ERR_PTR(-ENOMEM); | |
1492 | ||
1493 | for (i = 0; i < ARRAY_SIZE(props); i++) { | |
1494 | int ret; | |
1495 | ||
1496 | if (!(BIT(props[i].type) & supported_filters)) | |
1497 | continue; | |
1498 | ||
1499 | ret = drm_property_add_enum(prop, props[i].type, | |
1500 | props[i].name); | |
1501 | ||
1502 | if (ret) { | |
1503 | drm_property_destroy(dev, prop); | |
1504 | ||
1505 | return ERR_PTR(ret); | |
1506 | } | |
1507 | } | |
1508 | ||
1509 | return prop; | |
1510 | } | |
1511 | ||
1512 | /** | |
1513 | * drm_plane_create_scaling_filter_property - create a new scaling filter | |
1514 | * property | |
1515 | * | |
1516 | * @plane: drm plane | |
1517 | * @supported_filters: bitmask of supported scaling filters, must include | |
1518 | * BIT(DRM_SCALING_FILTER_DEFAULT). | |
1519 | * | |
1520 | * This function lets driver to enable the scaling filter property on a given | |
1521 | * plane. | |
1522 | * | |
1523 | * RETURNS: | |
1524 | * Zero for success or -errno | |
1525 | */ | |
1526 | int drm_plane_create_scaling_filter_property(struct drm_plane *plane, | |
1527 | unsigned int supported_filters) | |
1528 | { | |
1529 | struct drm_property *prop = | |
1530 | drm_create_scaling_filter_prop(plane->dev, supported_filters); | |
1531 | ||
1532 | if (IS_ERR(prop)) | |
1533 | return PTR_ERR(prop); | |
1534 | ||
1535 | drm_object_attach_property(&plane->base, prop, | |
1536 | DRM_SCALING_FILTER_DEFAULT); | |
1537 | plane->scaling_filter_property = prop; | |
1538 | ||
1539 | return 0; | |
1540 | } | |
1541 | EXPORT_SYMBOL(drm_plane_create_scaling_filter_property); |