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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 | ||
23 | #include <drm/drmP.h> | |
24 | #include <drm/drm_plane.h> | |
25 | ||
26 | #include "drm_crtc_internal.h" | |
27 | ||
532b3671 DV |
28 | /** |
29 | * DOC: overview | |
30 | * | |
31 | * A plane represents an image source that can be blended with or overlayed on | |
32 | * top of a CRTC during the scanout process. Planes take their input data from a | |
33 | * &drm_framebuffer object. The plane itself specifies the cropping and scaling | |
34 | * of that image, and where it is placed on the visible are of a display | |
35 | * pipeline, represented by &drm_crtc. A plane can also have additional | |
36 | * properties that specify how the pixels are positioned and blended, like | |
37 | * rotation or Z-position. All these properties are stored in &drm_plane_state. | |
38 | * | |
39 | * To create a plane, a KMS drivers allocates and zeroes an instances of | |
ea0dd85a | 40 | * &struct drm_plane (possibly as part of a larger structure) and registers it |
532b3671 DV |
41 | * with a call to drm_universal_plane_init(). |
42 | * | |
43 | * Cursor and overlay planes are optional. All drivers should provide one | |
44 | * primary plane per CRTC to avoid surprising userspace too much. See enum | |
d574528a | 45 | * drm_plane_type for a more in-depth discussion of these special uapi-relevant |
532b3671 DV |
46 | * plane types. Special planes are associated with their CRTC by calling |
47 | * drm_crtc_init_with_planes(). | |
1e4d84c6 DV |
48 | * |
49 | * The type of a plane is exposed in the immutable "type" enumeration property, | |
50 | * which has one of the following values: "Overlay", "Primary", "Cursor". | |
532b3671 DV |
51 | */ |
52 | ||
43968d7b DV |
53 | static unsigned int drm_num_planes(struct drm_device *dev) |
54 | { | |
55 | unsigned int num = 0; | |
56 | struct drm_plane *tmp; | |
57 | ||
58 | drm_for_each_plane(tmp, dev) { | |
59 | num++; | |
60 | } | |
61 | ||
62 | return num; | |
63 | } | |
64 | ||
db1689aa BW |
65 | static inline u32 * |
66 | formats_ptr(struct drm_format_modifier_blob *blob) | |
67 | { | |
68 | return (u32 *)(((char *)blob) + blob->formats_offset); | |
69 | } | |
70 | ||
71 | static inline struct drm_format_modifier * | |
72 | modifiers_ptr(struct drm_format_modifier_blob *blob) | |
73 | { | |
74 | return (struct drm_format_modifier *)(((char *)blob) + blob->modifiers_offset); | |
75 | } | |
76 | ||
77 | static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane) | |
78 | { | |
79 | const struct drm_mode_config *config = &dev->mode_config; | |
80 | struct drm_property_blob *blob; | |
81 | struct drm_format_modifier *mod; | |
82 | size_t blob_size, formats_size, modifiers_size; | |
83 | struct drm_format_modifier_blob *blob_data; | |
84 | unsigned int i, j; | |
85 | ||
86 | formats_size = sizeof(__u32) * plane->format_count; | |
87 | if (WARN_ON(!formats_size)) { | |
88 | /* 0 formats are never expected */ | |
89 | return 0; | |
90 | } | |
91 | ||
92 | modifiers_size = | |
93 | sizeof(struct drm_format_modifier) * plane->modifier_count; | |
94 | ||
95 | blob_size = sizeof(struct drm_format_modifier_blob); | |
96 | /* Modifiers offset is a pointer to a struct with a 64 bit field so it | |
97 | * should be naturally aligned to 8B. | |
98 | */ | |
99 | BUILD_BUG_ON(sizeof(struct drm_format_modifier_blob) % 8); | |
100 | blob_size += ALIGN(formats_size, 8); | |
101 | blob_size += modifiers_size; | |
102 | ||
103 | blob = drm_property_create_blob(dev, blob_size, NULL); | |
104 | if (IS_ERR(blob)) | |
105 | return -1; | |
106 | ||
107 | blob_data = (struct drm_format_modifier_blob *)blob->data; | |
108 | blob_data->version = FORMAT_BLOB_CURRENT; | |
109 | blob_data->count_formats = plane->format_count; | |
110 | blob_data->formats_offset = sizeof(struct drm_format_modifier_blob); | |
111 | blob_data->count_modifiers = plane->modifier_count; | |
112 | ||
113 | blob_data->modifiers_offset = | |
114 | ALIGN(blob_data->formats_offset + formats_size, 8); | |
115 | ||
116 | memcpy(formats_ptr(blob_data), plane->format_types, formats_size); | |
117 | ||
118 | /* If we can't determine support, just bail */ | |
119 | if (!plane->funcs->format_mod_supported) | |
120 | goto done; | |
121 | ||
122 | mod = modifiers_ptr(blob_data); | |
123 | for (i = 0; i < plane->modifier_count; i++) { | |
124 | for (j = 0; j < plane->format_count; j++) { | |
125 | if (plane->funcs->format_mod_supported(plane, | |
126 | plane->format_types[j], | |
127 | plane->modifiers[i])) { | |
128 | ||
aadd4148 | 129 | mod->formats |= 1ULL << j; |
db1689aa BW |
130 | } |
131 | } | |
132 | ||
133 | mod->modifier = plane->modifiers[i]; | |
134 | mod->offset = 0; | |
135 | mod->pad = 0; | |
136 | mod++; | |
137 | } | |
138 | ||
139 | done: | |
140 | drm_object_attach_property(&plane->base, config->modifiers_property, | |
141 | blob->base.id); | |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
43968d7b DV |
146 | /** |
147 | * drm_universal_plane_init - Initialize a new universal plane object | |
148 | * @dev: DRM device | |
149 | * @plane: plane object to init | |
150 | * @possible_crtcs: bitmask of possible CRTCs | |
151 | * @funcs: callbacks for the new plane | |
152 | * @formats: array of supported formats (DRM_FORMAT\_\*) | |
153 | * @format_count: number of elements in @formats | |
e6fc3b68 BW |
154 | * @format_modifiers: array of struct drm_format modifiers terminated by |
155 | * DRM_FORMAT_MOD_INVALID | |
43968d7b DV |
156 | * @type: type of plane (overlay, primary, cursor) |
157 | * @name: printf style format string for the plane name, or NULL for default name | |
158 | * | |
159 | * Initializes a plane object of type @type. | |
160 | * | |
161 | * Returns: | |
162 | * Zero on success, error code on failure. | |
163 | */ | |
164 | int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
5cd57a46 | 165 | uint32_t possible_crtcs, |
43968d7b DV |
166 | const struct drm_plane_funcs *funcs, |
167 | const uint32_t *formats, unsigned int format_count, | |
e6fc3b68 | 168 | const uint64_t *format_modifiers, |
43968d7b DV |
169 | enum drm_plane_type type, |
170 | const char *name, ...) | |
171 | { | |
172 | struct drm_mode_config *config = &dev->mode_config; | |
e6fc3b68 | 173 | unsigned int format_modifier_count = 0; |
43968d7b DV |
174 | int ret; |
175 | ||
2135ea7a | 176 | ret = drm_mode_object_add(dev, &plane->base, DRM_MODE_OBJECT_PLANE); |
43968d7b DV |
177 | if (ret) |
178 | return ret; | |
179 | ||
180 | drm_modeset_lock_init(&plane->mutex); | |
181 | ||
182 | plane->base.properties = &plane->properties; | |
183 | plane->dev = dev; | |
184 | plane->funcs = funcs; | |
185 | plane->format_types = kmalloc_array(format_count, sizeof(uint32_t), | |
186 | GFP_KERNEL); | |
187 | if (!plane->format_types) { | |
188 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
189 | drm_mode_object_unregister(dev, &plane->base); | |
190 | return -ENOMEM; | |
191 | } | |
192 | ||
e6fc3b68 BW |
193 | /* |
194 | * First driver to need more than 64 formats needs to fix this. Each | |
195 | * format is encoded as a bit and the current code only supports a u64. | |
196 | */ | |
197 | if (WARN_ON(format_count > 64)) | |
198 | return -EINVAL; | |
199 | ||
200 | if (format_modifiers) { | |
201 | const uint64_t *temp_modifiers = format_modifiers; | |
202 | while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID) | |
203 | format_modifier_count++; | |
204 | } | |
205 | ||
206 | plane->modifier_count = format_modifier_count; | |
207 | plane->modifiers = kmalloc_array(format_modifier_count, | |
208 | sizeof(format_modifiers[0]), | |
209 | GFP_KERNEL); | |
210 | ||
211 | if (format_modifier_count && !plane->modifiers) { | |
212 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
213 | kfree(plane->format_types); | |
214 | drm_mode_object_unregister(dev, &plane->base); | |
215 | return -ENOMEM; | |
216 | } | |
217 | ||
43968d7b DV |
218 | if (name) { |
219 | va_list ap; | |
220 | ||
221 | va_start(ap, name); | |
222 | plane->name = kvasprintf(GFP_KERNEL, name, ap); | |
223 | va_end(ap); | |
224 | } else { | |
225 | plane->name = kasprintf(GFP_KERNEL, "plane-%d", | |
226 | drm_num_planes(dev)); | |
227 | } | |
228 | if (!plane->name) { | |
229 | kfree(plane->format_types); | |
e6fc3b68 | 230 | kfree(plane->modifiers); |
43968d7b DV |
231 | drm_mode_object_unregister(dev, &plane->base); |
232 | return -ENOMEM; | |
233 | } | |
234 | ||
235 | memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); | |
236 | plane->format_count = format_count; | |
e6fc3b68 BW |
237 | memcpy(plane->modifiers, format_modifiers, |
238 | format_modifier_count * sizeof(format_modifiers[0])); | |
43968d7b DV |
239 | plane->possible_crtcs = possible_crtcs; |
240 | plane->type = type; | |
241 | ||
242 | list_add_tail(&plane->head, &config->plane_list); | |
243 | plane->index = config->num_total_plane++; | |
244 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) | |
245 | config->num_overlay_plane++; | |
246 | ||
247 | drm_object_attach_property(&plane->base, | |
248 | config->plane_type_property, | |
249 | plane->type); | |
250 | ||
251 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { | |
252 | drm_object_attach_property(&plane->base, config->prop_fb_id, 0); | |
96260142 | 253 | drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1); |
43968d7b DV |
254 | drm_object_attach_property(&plane->base, config->prop_crtc_id, 0); |
255 | drm_object_attach_property(&plane->base, config->prop_crtc_x, 0); | |
256 | drm_object_attach_property(&plane->base, config->prop_crtc_y, 0); | |
257 | drm_object_attach_property(&plane->base, config->prop_crtc_w, 0); | |
258 | drm_object_attach_property(&plane->base, config->prop_crtc_h, 0); | |
259 | drm_object_attach_property(&plane->base, config->prop_src_x, 0); | |
260 | drm_object_attach_property(&plane->base, config->prop_src_y, 0); | |
261 | drm_object_attach_property(&plane->base, config->prop_src_w, 0); | |
262 | drm_object_attach_property(&plane->base, config->prop_src_h, 0); | |
263 | } | |
264 | ||
db1689aa BW |
265 | if (config->allow_fb_modifiers) |
266 | create_in_format_blob(dev, plane); | |
267 | ||
43968d7b DV |
268 | return 0; |
269 | } | |
270 | EXPORT_SYMBOL(drm_universal_plane_init); | |
271 | ||
272 | int drm_plane_register_all(struct drm_device *dev) | |
273 | { | |
274 | struct drm_plane *plane; | |
275 | int ret = 0; | |
276 | ||
277 | drm_for_each_plane(plane, dev) { | |
278 | if (plane->funcs->late_register) | |
279 | ret = plane->funcs->late_register(plane); | |
280 | if (ret) | |
281 | return ret; | |
282 | } | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | void drm_plane_unregister_all(struct drm_device *dev) | |
288 | { | |
289 | struct drm_plane *plane; | |
290 | ||
291 | drm_for_each_plane(plane, dev) { | |
292 | if (plane->funcs->early_unregister) | |
293 | plane->funcs->early_unregister(plane); | |
294 | } | |
295 | } | |
296 | ||
297 | /** | |
298 | * drm_plane_init - Initialize a legacy plane | |
299 | * @dev: DRM device | |
300 | * @plane: plane object to init | |
301 | * @possible_crtcs: bitmask of possible CRTCs | |
302 | * @funcs: callbacks for the new plane | |
303 | * @formats: array of supported formats (DRM_FORMAT\_\*) | |
304 | * @format_count: number of elements in @formats | |
305 | * @is_primary: plane type (primary vs overlay) | |
306 | * | |
307 | * Legacy API to initialize a DRM plane. | |
308 | * | |
309 | * New drivers should call drm_universal_plane_init() instead. | |
310 | * | |
311 | * Returns: | |
312 | * Zero on success, error code on failure. | |
313 | */ | |
314 | int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
5cd57a46 | 315 | uint32_t possible_crtcs, |
43968d7b DV |
316 | const struct drm_plane_funcs *funcs, |
317 | const uint32_t *formats, unsigned int format_count, | |
318 | bool is_primary) | |
319 | { | |
320 | enum drm_plane_type type; | |
321 | ||
322 | type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; | |
323 | return drm_universal_plane_init(dev, plane, possible_crtcs, funcs, | |
e6fc3b68 BW |
324 | formats, format_count, |
325 | NULL, type, NULL); | |
43968d7b DV |
326 | } |
327 | EXPORT_SYMBOL(drm_plane_init); | |
328 | ||
329 | /** | |
330 | * drm_plane_cleanup - Clean up the core plane usage | |
331 | * @plane: plane to cleanup | |
332 | * | |
333 | * This function cleans up @plane and removes it from the DRM mode setting | |
334 | * core. Note that the function does *not* free the plane structure itself, | |
335 | * this is the responsibility of the caller. | |
336 | */ | |
337 | void drm_plane_cleanup(struct drm_plane *plane) | |
338 | { | |
339 | struct drm_device *dev = plane->dev; | |
340 | ||
661a3755 DV |
341 | drm_modeset_lock_fini(&plane->mutex); |
342 | ||
43968d7b | 343 | kfree(plane->format_types); |
e6fc3b68 | 344 | kfree(plane->modifiers); |
43968d7b DV |
345 | drm_mode_object_unregister(dev, &plane->base); |
346 | ||
347 | BUG_ON(list_empty(&plane->head)); | |
348 | ||
349 | /* Note that the plane_list is considered to be static; should we | |
350 | * remove the drm_plane at runtime we would have to decrement all | |
351 | * the indices on the drm_plane after us in the plane_list. | |
352 | */ | |
353 | ||
354 | list_del(&plane->head); | |
355 | dev->mode_config.num_total_plane--; | |
356 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) | |
357 | dev->mode_config.num_overlay_plane--; | |
43968d7b DV |
358 | |
359 | WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); | |
360 | if (plane->state && plane->funcs->atomic_destroy_state) | |
361 | plane->funcs->atomic_destroy_state(plane, plane->state); | |
362 | ||
363 | kfree(plane->name); | |
364 | ||
365 | memset(plane, 0, sizeof(*plane)); | |
366 | } | |
367 | EXPORT_SYMBOL(drm_plane_cleanup); | |
368 | ||
369 | /** | |
370 | * drm_plane_from_index - find the registered plane at an index | |
371 | * @dev: DRM device | |
372 | * @idx: index of registered plane to find for | |
373 | * | |
374 | * Given a plane index, return the registered plane from DRM device's | |
931c670d | 375 | * list of planes with matching index. This is the inverse of drm_plane_index(). |
43968d7b DV |
376 | */ |
377 | struct drm_plane * | |
378 | drm_plane_from_index(struct drm_device *dev, int idx) | |
379 | { | |
380 | struct drm_plane *plane; | |
381 | ||
382 | drm_for_each_plane(plane, dev) | |
383 | if (idx == plane->index) | |
384 | return plane; | |
385 | ||
386 | return NULL; | |
387 | } | |
388 | EXPORT_SYMBOL(drm_plane_from_index); | |
389 | ||
390 | /** | |
391 | * drm_plane_force_disable - Forcibly disable a plane | |
392 | * @plane: plane to disable | |
393 | * | |
394 | * Forces the plane to be disabled. | |
395 | * | |
396 | * Used when the plane's current framebuffer is destroyed, | |
397 | * and when restoring fbdev mode. | |
5fbef3ee DV |
398 | * |
399 | * Note that this function is not suitable for atomic drivers, since it doesn't | |
400 | * wire through the lock acquisition context properly and hence can't handle | |
401 | * retries or driver private locks. You probably want to use | |
402 | * drm_atomic_helper_disable_plane() or | |
403 | * drm_atomic_helper_disable_planes_on_crtc() instead. | |
43968d7b DV |
404 | */ |
405 | void drm_plane_force_disable(struct drm_plane *plane) | |
406 | { | |
407 | int ret; | |
408 | ||
409 | if (!plane->fb) | |
410 | return; | |
411 | ||
5fbef3ee DV |
412 | WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); |
413 | ||
43968d7b | 414 | plane->old_fb = plane->fb; |
19315294 | 415 | ret = plane->funcs->disable_plane(plane, NULL); |
43968d7b DV |
416 | if (ret) { |
417 | DRM_ERROR("failed to disable plane with busy fb\n"); | |
418 | plane->old_fb = NULL; | |
419 | return; | |
420 | } | |
421 | /* disconnect the plane from the fb and crtc: */ | |
a4a69da0 | 422 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
423 | plane->old_fb = NULL; |
424 | plane->fb = NULL; | |
425 | plane->crtc = NULL; | |
426 | } | |
427 | EXPORT_SYMBOL(drm_plane_force_disable); | |
428 | ||
429 | /** | |
430 | * drm_mode_plane_set_obj_prop - set the value of a property | |
431 | * @plane: drm plane object to set property value for | |
432 | * @property: property to set | |
433 | * @value: value the property should be set to | |
434 | * | |
435 | * This functions sets a given property on a given plane object. This function | |
436 | * calls the driver's ->set_property callback and changes the software state of | |
437 | * the property if the callback succeeds. | |
438 | * | |
439 | * Returns: | |
440 | * Zero on success, error code on failure. | |
441 | */ | |
442 | int drm_mode_plane_set_obj_prop(struct drm_plane *plane, | |
443 | struct drm_property *property, | |
444 | uint64_t value) | |
445 | { | |
446 | int ret = -EINVAL; | |
447 | struct drm_mode_object *obj = &plane->base; | |
448 | ||
449 | if (plane->funcs->set_property) | |
450 | ret = plane->funcs->set_property(plane, property, value); | |
451 | if (!ret) | |
452 | drm_object_property_set_value(obj, property, value); | |
453 | ||
454 | return ret; | |
455 | } | |
456 | EXPORT_SYMBOL(drm_mode_plane_set_obj_prop); | |
457 | ||
43968d7b DV |
458 | int drm_mode_getplane_res(struct drm_device *dev, void *data, |
459 | struct drm_file *file_priv) | |
460 | { | |
461 | struct drm_mode_get_plane_res *plane_resp = data; | |
462 | struct drm_mode_config *config; | |
463 | struct drm_plane *plane; | |
464 | uint32_t __user *plane_ptr; | |
465 | int copied = 0; | |
466 | unsigned num_planes; | |
467 | ||
468 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
469 | return -EINVAL; | |
470 | ||
471 | config = &dev->mode_config; | |
472 | ||
473 | if (file_priv->universal_planes) | |
474 | num_planes = config->num_total_plane; | |
475 | else | |
476 | num_planes = config->num_overlay_plane; | |
477 | ||
478 | /* | |
479 | * This ioctl is called twice, once to determine how much space is | |
480 | * needed, and the 2nd time to fill it. | |
481 | */ | |
482 | if (num_planes && | |
483 | (plane_resp->count_planes >= num_planes)) { | |
484 | plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; | |
485 | ||
486 | /* Plane lists are invariant, no locking needed. */ | |
487 | drm_for_each_plane(plane, dev) { | |
488 | /* | |
489 | * Unless userspace set the 'universal planes' | |
490 | * capability bit, only advertise overlays. | |
491 | */ | |
492 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && | |
493 | !file_priv->universal_planes) | |
494 | continue; | |
495 | ||
496 | if (put_user(plane->base.id, plane_ptr + copied)) | |
497 | return -EFAULT; | |
498 | copied++; | |
499 | } | |
500 | } | |
501 | plane_resp->count_planes = num_planes; | |
502 | ||
503 | return 0; | |
504 | } | |
505 | ||
43968d7b DV |
506 | int drm_mode_getplane(struct drm_device *dev, void *data, |
507 | struct drm_file *file_priv) | |
508 | { | |
509 | struct drm_mode_get_plane *plane_resp = data; | |
510 | struct drm_plane *plane; | |
511 | uint32_t __user *format_ptr; | |
512 | ||
513 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
514 | return -EINVAL; | |
515 | ||
418da172 | 516 | plane = drm_plane_find(dev, file_priv, plane_resp->plane_id); |
43968d7b DV |
517 | if (!plane) |
518 | return -ENOENT; | |
519 | ||
520 | drm_modeset_lock(&plane->mutex, NULL); | |
de7b6be7 DS |
521 | if (plane->state && plane->state->crtc) |
522 | plane_resp->crtc_id = plane->state->crtc->base.id; | |
523 | else if (!plane->state && plane->crtc) | |
43968d7b DV |
524 | plane_resp->crtc_id = plane->crtc->base.id; |
525 | else | |
526 | plane_resp->crtc_id = 0; | |
527 | ||
de7b6be7 DS |
528 | if (plane->state && plane->state->fb) |
529 | plane_resp->fb_id = plane->state->fb->base.id; | |
530 | else if (!plane->state && plane->fb) | |
43968d7b DV |
531 | plane_resp->fb_id = plane->fb->base.id; |
532 | else | |
533 | plane_resp->fb_id = 0; | |
534 | drm_modeset_unlock(&plane->mutex); | |
535 | ||
536 | plane_resp->plane_id = plane->base.id; | |
537 | plane_resp->possible_crtcs = plane->possible_crtcs; | |
538 | plane_resp->gamma_size = 0; | |
539 | ||
540 | /* | |
541 | * This ioctl is called twice, once to determine how much space is | |
542 | * needed, and the 2nd time to fill it. | |
543 | */ | |
544 | if (plane->format_count && | |
545 | (plane_resp->count_format_types >= plane->format_count)) { | |
546 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; | |
547 | if (copy_to_user(format_ptr, | |
548 | plane->format_types, | |
549 | sizeof(uint32_t) * plane->format_count)) { | |
550 | return -EFAULT; | |
551 | } | |
552 | } | |
553 | plane_resp->count_format_types = plane->format_count; | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
43968d7b DV |
558 | int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format) |
559 | { | |
560 | unsigned int i; | |
561 | ||
562 | for (i = 0; i < plane->format_count; i++) { | |
563 | if (format == plane->format_types[i]) | |
564 | return 0; | |
565 | } | |
566 | ||
567 | return -EINVAL; | |
568 | } | |
569 | ||
570 | /* | |
571 | * setplane_internal - setplane handler for internal callers | |
572 | * | |
573 | * Note that we assume an extra reference has already been taken on fb. If the | |
574 | * update fails, this reference will be dropped before return; if it succeeds, | |
575 | * the previous framebuffer (if any) will be unreferenced instead. | |
576 | * | |
577 | * src_{x,y,w,h} are provided in 16.16 fixed point format | |
578 | */ | |
579 | static int __setplane_internal(struct drm_plane *plane, | |
580 | struct drm_crtc *crtc, | |
581 | struct drm_framebuffer *fb, | |
582 | int32_t crtc_x, int32_t crtc_y, | |
583 | uint32_t crtc_w, uint32_t crtc_h, | |
584 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
585 | uint32_t src_x, uint32_t src_y, | |
232e8f70 DV |
586 | uint32_t src_w, uint32_t src_h, |
587 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
588 | { |
589 | int ret = 0; | |
590 | ||
591 | /* No fb means shut it down */ | |
592 | if (!fb) { | |
593 | plane->old_fb = plane->fb; | |
19315294 | 594 | ret = plane->funcs->disable_plane(plane, ctx); |
43968d7b DV |
595 | if (!ret) { |
596 | plane->crtc = NULL; | |
597 | plane->fb = NULL; | |
598 | } else { | |
599 | plane->old_fb = NULL; | |
600 | } | |
601 | goto out; | |
602 | } | |
603 | ||
604 | /* Check whether this plane is usable on this CRTC */ | |
605 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { | |
606 | DRM_DEBUG_KMS("Invalid crtc for plane\n"); | |
607 | ret = -EINVAL; | |
608 | goto out; | |
609 | } | |
610 | ||
611 | /* Check whether this plane supports the fb pixel format. */ | |
438b74a5 | 612 | ret = drm_plane_check_pixel_format(plane, fb->format->format); |
43968d7b | 613 | if (ret) { |
b3c11ac2 EE |
614 | struct drm_format_name_buf format_name; |
615 | DRM_DEBUG_KMS("Invalid pixel format %s\n", | |
438b74a5 | 616 | drm_get_format_name(fb->format->format, |
b3c11ac2 | 617 | &format_name)); |
43968d7b DV |
618 | goto out; |
619 | } | |
620 | ||
621 | /* Give drivers some help against integer overflows */ | |
622 | if (crtc_w > INT_MAX || | |
623 | crtc_x > INT_MAX - (int32_t) crtc_w || | |
624 | crtc_h > INT_MAX || | |
625 | crtc_y > INT_MAX - (int32_t) crtc_h) { | |
626 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", | |
627 | crtc_w, crtc_h, crtc_x, crtc_y); | |
628 | ret = -ERANGE; | |
629 | goto out; | |
630 | } | |
631 | ||
632 | ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); | |
633 | if (ret) | |
634 | goto out; | |
635 | ||
636 | plane->old_fb = plane->fb; | |
637 | ret = plane->funcs->update_plane(plane, crtc, fb, | |
638 | crtc_x, crtc_y, crtc_w, crtc_h, | |
34a2ab5e | 639 | src_x, src_y, src_w, src_h, ctx); |
43968d7b DV |
640 | if (!ret) { |
641 | plane->crtc = crtc; | |
642 | plane->fb = fb; | |
643 | fb = NULL; | |
644 | } else { | |
645 | plane->old_fb = NULL; | |
646 | } | |
647 | ||
648 | out: | |
649 | if (fb) | |
a4a69da0 | 650 | drm_framebuffer_put(fb); |
43968d7b | 651 | if (plane->old_fb) |
a4a69da0 | 652 | drm_framebuffer_put(plane->old_fb); |
43968d7b DV |
653 | plane->old_fb = NULL; |
654 | ||
655 | return ret; | |
656 | } | |
657 | ||
658 | static int setplane_internal(struct drm_plane *plane, | |
659 | struct drm_crtc *crtc, | |
660 | struct drm_framebuffer *fb, | |
661 | int32_t crtc_x, int32_t crtc_y, | |
662 | uint32_t crtc_w, uint32_t crtc_h, | |
663 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
664 | uint32_t src_x, uint32_t src_y, | |
665 | uint32_t src_w, uint32_t src_h) | |
666 | { | |
232e8f70 | 667 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
668 | int ret; |
669 | ||
13736ba3 | 670 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
232e8f70 DV |
671 | retry: |
672 | ret = drm_modeset_lock_all_ctx(plane->dev, &ctx); | |
673 | if (ret) | |
674 | goto fail; | |
43968d7b DV |
675 | ret = __setplane_internal(plane, crtc, fb, |
676 | crtc_x, crtc_y, crtc_w, crtc_h, | |
232e8f70 DV |
677 | src_x, src_y, src_w, src_h, &ctx); |
678 | ||
679 | fail: | |
680 | if (ret == -EDEADLK) { | |
13736ba3 ML |
681 | ret = drm_modeset_backoff(&ctx); |
682 | if (!ret) | |
683 | goto retry; | |
232e8f70 DV |
684 | } |
685 | drm_modeset_drop_locks(&ctx); | |
686 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
687 | |
688 | return ret; | |
689 | } | |
690 | ||
43968d7b DV |
691 | int drm_mode_setplane(struct drm_device *dev, void *data, |
692 | struct drm_file *file_priv) | |
693 | { | |
694 | struct drm_mode_set_plane *plane_req = data; | |
695 | struct drm_plane *plane; | |
696 | struct drm_crtc *crtc = NULL; | |
697 | struct drm_framebuffer *fb = NULL; | |
698 | ||
699 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
700 | return -EINVAL; | |
701 | ||
702 | /* | |
703 | * First, find the plane, crtc, and fb objects. If not available, | |
704 | * we don't bother to call the driver. | |
705 | */ | |
418da172 | 706 | plane = drm_plane_find(dev, file_priv, plane_req->plane_id); |
43968d7b DV |
707 | if (!plane) { |
708 | DRM_DEBUG_KMS("Unknown plane ID %d\n", | |
709 | plane_req->plane_id); | |
710 | return -ENOENT; | |
711 | } | |
712 | ||
713 | if (plane_req->fb_id) { | |
418da172 | 714 | fb = drm_framebuffer_lookup(dev, file_priv, plane_req->fb_id); |
43968d7b DV |
715 | if (!fb) { |
716 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", | |
717 | plane_req->fb_id); | |
718 | return -ENOENT; | |
719 | } | |
720 | ||
418da172 | 721 | crtc = drm_crtc_find(dev, file_priv, plane_req->crtc_id); |
43968d7b | 722 | if (!crtc) { |
491ab470 | 723 | drm_framebuffer_put(fb); |
43968d7b DV |
724 | DRM_DEBUG_KMS("Unknown crtc ID %d\n", |
725 | plane_req->crtc_id); | |
726 | return -ENOENT; | |
727 | } | |
728 | } | |
729 | ||
730 | /* | |
731 | * setplane_internal will take care of deref'ing either the old or new | |
732 | * framebuffer depending on success. | |
733 | */ | |
734 | return setplane_internal(plane, crtc, fb, | |
735 | plane_req->crtc_x, plane_req->crtc_y, | |
736 | plane_req->crtc_w, plane_req->crtc_h, | |
737 | plane_req->src_x, plane_req->src_y, | |
738 | plane_req->src_w, plane_req->src_h); | |
739 | } | |
740 | ||
43968d7b DV |
741 | static int drm_mode_cursor_universal(struct drm_crtc *crtc, |
742 | struct drm_mode_cursor2 *req, | |
b95ff031 DV |
743 | struct drm_file *file_priv, |
744 | struct drm_modeset_acquire_ctx *ctx) | |
43968d7b DV |
745 | { |
746 | struct drm_device *dev = crtc->dev; | |
747 | struct drm_framebuffer *fb = NULL; | |
748 | struct drm_mode_fb_cmd2 fbreq = { | |
749 | .width = req->width, | |
750 | .height = req->height, | |
751 | .pixel_format = DRM_FORMAT_ARGB8888, | |
752 | .pitches = { req->width * 4 }, | |
753 | .handles = { req->handle }, | |
754 | }; | |
755 | int32_t crtc_x, crtc_y; | |
756 | uint32_t crtc_w = 0, crtc_h = 0; | |
757 | uint32_t src_w = 0, src_h = 0; | |
758 | int ret = 0; | |
759 | ||
760 | BUG_ON(!crtc->cursor); | |
761 | WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL); | |
762 | ||
763 | /* | |
764 | * Obtain fb we'll be using (either new or existing) and take an extra | |
765 | * reference to it if fb != null. setplane will take care of dropping | |
766 | * the reference if the plane update fails. | |
767 | */ | |
768 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
769 | if (req->handle) { | |
770 | fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv); | |
771 | if (IS_ERR(fb)) { | |
772 | DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); | |
773 | return PTR_ERR(fb); | |
774 | } | |
775 | fb->hot_x = req->hot_x; | |
776 | fb->hot_y = req->hot_y; | |
777 | } else { | |
778 | fb = NULL; | |
779 | } | |
780 | } else { | |
781 | fb = crtc->cursor->fb; | |
782 | if (fb) | |
a4a69da0 | 783 | drm_framebuffer_get(fb); |
43968d7b DV |
784 | } |
785 | ||
786 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
787 | crtc_x = req->x; | |
788 | crtc_y = req->y; | |
789 | } else { | |
790 | crtc_x = crtc->cursor_x; | |
791 | crtc_y = crtc->cursor_y; | |
792 | } | |
793 | ||
794 | if (fb) { | |
795 | crtc_w = fb->width; | |
796 | crtc_h = fb->height; | |
797 | src_w = fb->width << 16; | |
798 | src_h = fb->height << 16; | |
799 | } | |
800 | ||
801 | /* | |
802 | * setplane_internal will take care of deref'ing either the old or new | |
803 | * framebuffer depending on success. | |
804 | */ | |
805 | ret = __setplane_internal(crtc->cursor, crtc, fb, | |
806 | crtc_x, crtc_y, crtc_w, crtc_h, | |
b95ff031 | 807 | 0, 0, src_w, src_h, ctx); |
43968d7b DV |
808 | |
809 | /* Update successful; save new cursor position, if necessary */ | |
810 | if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) { | |
811 | crtc->cursor_x = req->x; | |
812 | crtc->cursor_y = req->y; | |
813 | } | |
814 | ||
815 | return ret; | |
816 | } | |
817 | ||
818 | static int drm_mode_cursor_common(struct drm_device *dev, | |
819 | struct drm_mode_cursor2 *req, | |
820 | struct drm_file *file_priv) | |
821 | { | |
822 | struct drm_crtc *crtc; | |
b95ff031 | 823 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
824 | int ret = 0; |
825 | ||
826 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
827 | return -EINVAL; | |
828 | ||
829 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) | |
830 | return -EINVAL; | |
831 | ||
418da172 | 832 | crtc = drm_crtc_find(dev, file_priv, req->crtc_id); |
43968d7b DV |
833 | if (!crtc) { |
834 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); | |
835 | return -ENOENT; | |
836 | } | |
837 | ||
6c886e4a | 838 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
b95ff031 DV |
839 | retry: |
840 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
841 | if (ret) | |
842 | goto out; | |
43968d7b DV |
843 | /* |
844 | * If this crtc has a universal cursor plane, call that plane's update | |
845 | * handler rather than using legacy cursor handlers. | |
846 | */ | |
b95ff031 | 847 | if (crtc->cursor) { |
2e064163 DV |
848 | ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx); |
849 | if (ret) | |
850 | goto out; | |
851 | ||
b95ff031 DV |
852 | ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx); |
853 | goto out; | |
854 | } | |
43968d7b DV |
855 | |
856 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
857 | if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { | |
858 | ret = -ENXIO; | |
859 | goto out; | |
860 | } | |
861 | /* Turns off the cursor if handle is 0 */ | |
862 | if (crtc->funcs->cursor_set2) | |
863 | ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, | |
864 | req->width, req->height, req->hot_x, req->hot_y); | |
865 | else | |
866 | ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, | |
867 | req->width, req->height); | |
868 | } | |
869 | ||
870 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
871 | if (crtc->funcs->cursor_move) { | |
872 | ret = crtc->funcs->cursor_move(crtc, req->x, req->y); | |
873 | } else { | |
874 | ret = -EFAULT; | |
875 | goto out; | |
876 | } | |
877 | } | |
878 | out: | |
b95ff031 | 879 | if (ret == -EDEADLK) { |
6c886e4a ML |
880 | ret = drm_modeset_backoff(&ctx); |
881 | if (!ret) | |
882 | goto retry; | |
b95ff031 DV |
883 | } |
884 | ||
885 | drm_modeset_drop_locks(&ctx); | |
886 | drm_modeset_acquire_fini(&ctx); | |
43968d7b DV |
887 | |
888 | return ret; | |
889 | ||
890 | } | |
891 | ||
892 | ||
43968d7b DV |
893 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
894 | void *data, struct drm_file *file_priv) | |
895 | { | |
896 | struct drm_mode_cursor *req = data; | |
897 | struct drm_mode_cursor2 new_req; | |
898 | ||
899 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); | |
900 | new_req.hot_x = new_req.hot_y = 0; | |
901 | ||
902 | return drm_mode_cursor_common(dev, &new_req, file_priv); | |
903 | } | |
904 | ||
532b3671 | 905 | /* |
43968d7b DV |
906 | * Set the cursor configuration based on user request. This implements the 2nd |
907 | * version of the cursor ioctl, which allows userspace to additionally specify | |
908 | * the hotspot of the pointer. | |
43968d7b DV |
909 | */ |
910 | int drm_mode_cursor2_ioctl(struct drm_device *dev, | |
911 | void *data, struct drm_file *file_priv) | |
912 | { | |
913 | struct drm_mode_cursor2 *req = data; | |
914 | ||
915 | return drm_mode_cursor_common(dev, req, file_priv); | |
916 | } | |
917 | ||
43968d7b DV |
918 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
919 | void *data, struct drm_file *file_priv) | |
920 | { | |
921 | struct drm_mode_crtc_page_flip_target *page_flip = data; | |
922 | struct drm_crtc *crtc; | |
923 | struct drm_framebuffer *fb = NULL; | |
924 | struct drm_pending_vblank_event *e = NULL; | |
925 | u32 target_vblank = page_flip->sequence; | |
29dc0d1d | 926 | struct drm_modeset_acquire_ctx ctx; |
43968d7b DV |
927 | int ret = -EINVAL; |
928 | ||
929 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
930 | return -EINVAL; | |
931 | ||
932 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS) | |
933 | return -EINVAL; | |
934 | ||
935 | if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) | |
936 | return -EINVAL; | |
937 | ||
938 | /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags | |
939 | * can be specified | |
940 | */ | |
941 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET) | |
942 | return -EINVAL; | |
943 | ||
944 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) | |
945 | return -EINVAL; | |
946 | ||
418da172 | 947 | crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id); |
43968d7b DV |
948 | if (!crtc) |
949 | return -ENOENT; | |
950 | ||
2adb29b1 DV |
951 | if (crtc->funcs->page_flip_target) { |
952 | u32 current_vblank; | |
953 | int r; | |
954 | ||
955 | r = drm_crtc_vblank_get(crtc); | |
956 | if (r) | |
957 | return r; | |
958 | ||
959 | current_vblank = drm_crtc_vblank_count(crtc); | |
960 | ||
961 | switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) { | |
962 | case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE: | |
963 | if ((int)(target_vblank - current_vblank) > 1) { | |
964 | DRM_DEBUG("Invalid absolute flip target %u, " | |
965 | "must be <= %u\n", target_vblank, | |
966 | current_vblank + 1); | |
967 | drm_crtc_vblank_put(crtc); | |
968 | return -EINVAL; | |
969 | } | |
970 | break; | |
971 | case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE: | |
972 | if (target_vblank != 0 && target_vblank != 1) { | |
973 | DRM_DEBUG("Invalid relative flip target %u, " | |
974 | "must be 0 or 1\n", target_vblank); | |
975 | drm_crtc_vblank_put(crtc); | |
976 | return -EINVAL; | |
977 | } | |
978 | target_vblank += current_vblank; | |
979 | break; | |
980 | default: | |
981 | target_vblank = current_vblank + | |
982 | !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC); | |
983 | break; | |
984 | } | |
985 | } else if (crtc->funcs->page_flip == NULL || | |
986 | (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) { | |
987 | return -EINVAL; | |
988 | } | |
989 | ||
c2e4ff34 | 990 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
29dc0d1d DV |
991 | retry: |
992 | ret = drm_modeset_lock(&crtc->mutex, &ctx); | |
993 | if (ret) | |
994 | goto out; | |
9739e746 | 995 | ret = drm_modeset_lock(&crtc->primary->mutex, &ctx); |
29dc0d1d DV |
996 | if (ret) |
997 | goto out; | |
29dc0d1d | 998 | |
43968d7b DV |
999 | if (crtc->primary->fb == NULL) { |
1000 | /* The framebuffer is currently unbound, presumably | |
1001 | * due to a hotplug event, that userspace has not | |
1002 | * yet discovered. | |
1003 | */ | |
1004 | ret = -EBUSY; | |
1005 | goto out; | |
1006 | } | |
1007 | ||
418da172 | 1008 | fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id); |
43968d7b DV |
1009 | if (!fb) { |
1010 | ret = -ENOENT; | |
1011 | goto out; | |
1012 | } | |
1013 | ||
1014 | if (crtc->state) { | |
1015 | const struct drm_plane_state *state = crtc->primary->state; | |
1016 | ||
1017 | ret = drm_framebuffer_check_src_coords(state->src_x, | |
1018 | state->src_y, | |
1019 | state->src_w, | |
1020 | state->src_h, | |
1021 | fb); | |
1022 | } else { | |
1023 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb); | |
1024 | } | |
1025 | if (ret) | |
1026 | goto out; | |
1027 | ||
dbd4d576 | 1028 | if (crtc->primary->fb->format != fb->format) { |
43968d7b DV |
1029 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); |
1030 | ret = -EINVAL; | |
1031 | goto out; | |
1032 | } | |
1033 | ||
1034 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1035 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
1036 | if (!e) { | |
1037 | ret = -ENOMEM; | |
1038 | goto out; | |
1039 | } | |
1040 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
1041 | e->event.base.length = sizeof(e->event); | |
1042 | e->event.user_data = page_flip->user_data; | |
1043 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); | |
1044 | if (ret) { | |
1045 | kfree(e); | |
031e5896 | 1046 | e = NULL; |
43968d7b DV |
1047 | goto out; |
1048 | } | |
1049 | } | |
1050 | ||
1051 | crtc->primary->old_fb = crtc->primary->fb; | |
43968d7b DV |
1052 | if (crtc->funcs->page_flip_target) |
1053 | ret = crtc->funcs->page_flip_target(crtc, fb, e, | |
1054 | page_flip->flags, | |
41292b1f DV |
1055 | target_vblank, |
1056 | &ctx); | |
43968d7b | 1057 | else |
41292b1f DV |
1058 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags, |
1059 | &ctx); | |
43968d7b DV |
1060 | if (ret) { |
1061 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) | |
1062 | drm_event_cancel_free(dev, &e->base); | |
1063 | /* Keep the old fb, don't unref it. */ | |
1064 | crtc->primary->old_fb = NULL; | |
1065 | } else { | |
1066 | crtc->primary->fb = fb; | |
1067 | /* Unref only the old framebuffer. */ | |
1068 | fb = NULL; | |
1069 | } | |
1070 | ||
1071 | out: | |
e86fa21b | 1072 | if (fb) |
a4a69da0 | 1073 | drm_framebuffer_put(fb); |
43968d7b | 1074 | if (crtc->primary->old_fb) |
a4a69da0 | 1075 | drm_framebuffer_put(crtc->primary->old_fb); |
43968d7b | 1076 | crtc->primary->old_fb = NULL; |
29dc0d1d DV |
1077 | |
1078 | if (ret == -EDEADLK) { | |
c2e4ff34 ML |
1079 | ret = drm_modeset_backoff(&ctx); |
1080 | if (!ret) | |
1081 | goto retry; | |
29dc0d1d DV |
1082 | } |
1083 | ||
1084 | drm_modeset_drop_locks(&ctx); | |
1085 | drm_modeset_acquire_fini(&ctx); | |
43968d7b | 1086 | |
f9285434 DV |
1087 | if (ret && crtc->funcs->page_flip_target) |
1088 | drm_crtc_vblank_put(crtc); | |
1089 | ||
43968d7b DV |
1090 | return ret; |
1091 | } |