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f453ba04 DA |
1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation | |
3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
4 | * Copyright (c) 2008 Red Hat Inc. | |
5 | * | |
6 | * DRM core CRTC related functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Keith Packard | |
28 | * Eric Anholt <eric@anholt.net> | |
29 | * Dave Airlie <airlied@linux.ie> | |
30 | * Jesse Barnes <jesse.barnes@intel.com> | |
31 | */ | |
6ba6d03e | 32 | #include <linux/ctype.h> |
f453ba04 | 33 | #include <linux/list.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
2d1a8a48 | 35 | #include <linux/export.h> |
6d6003c4 | 36 | #include <linux/dma-fence.h> |
e6120d64 | 37 | #include <linux/uaccess.h> |
90bb087f | 38 | #include <drm/drm_blend.h> |
760285e7 DH |
39 | #include <drm/drm_crtc.h> |
40 | #include <drm/drm_edid.h> | |
41 | #include <drm/drm_fourcc.h> | |
720cf96d | 42 | #include <drm/drm_framebuffer.h> |
9dbb70fd | 43 | #include <drm/drm_managed.h> |
51fd371b | 44 | #include <drm/drm_modeset_lock.h> |
88a48e29 | 45 | #include <drm/drm_atomic.h> |
3b96a0b1 | 46 | #include <drm/drm_auth.h> |
9edbf1fa | 47 | #include <drm/drm_debugfs_crc.h> |
e6120d64 DV |
48 | #include <drm/drm_drv.h> |
49 | #include <drm/drm_print.h> | |
50 | #include <drm/drm_file.h> | |
f453ba04 | 51 | |
8bd441b2 | 52 | #include "drm_crtc_internal.h" |
67d0ec4e | 53 | #include "drm_internal.h" |
8bd441b2 | 54 | |
d5d487eb DV |
55 | /** |
56 | * DOC: overview | |
57 | * | |
58 | * A CRTC represents the overall display pipeline. It receives pixel data from | |
59 | * &drm_plane and blends them together. The &drm_display_mode is also attached | |
60 | * to the CRTC, specifying display timings. On the output side the data is fed | |
61 | * to one or more &drm_encoder, which are then each connected to one | |
62 | * &drm_connector. | |
63 | * | |
64 | * To create a CRTC, a KMS drivers allocates and zeroes an instances of | |
65 | * &struct drm_crtc (possibly as part of a larger structure) and registers it | |
66 | * with a call to drm_crtc_init_with_planes(). | |
67 | * | |
68 | * The CRTC is also the entry point for legacy modeset operations, see | |
69 | * &drm_crtc_funcs.set_config, legacy plane operations, see | |
70 | * &drm_crtc_funcs.page_flip and &drm_crtc_funcs.cursor_set2, and other legacy | |
71 | * operations like &drm_crtc_funcs.gamma_set. For atomic drivers all these | |
72 | * features are controlled through &drm_property and | |
a3d0d834 | 73 | * &drm_mode_config_funcs.atomic_check. |
d5d487eb DV |
74 | */ |
75 | ||
6d1b81d8 SG |
76 | /** |
77 | * drm_crtc_from_index - find the registered CRTC at an index | |
78 | * @dev: DRM device | |
79 | * @idx: index of registered CRTC to find for | |
80 | * | |
81 | * Given a CRTC index, return the registered CRTC from DRM device's | |
931c670d SG |
82 | * list of CRTCs with matching index. This is the inverse of drm_crtc_index(). |
83 | * It's useful in the vblank callbacks (like &drm_driver.enable_vblank or | |
84 | * &drm_driver.disable_vblank), since that still deals with indices instead | |
85 | * of pointers to &struct drm_crtc." | |
6d1b81d8 SG |
86 | */ |
87 | struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx) | |
88 | { | |
89 | struct drm_crtc *crtc; | |
90 | ||
91 | drm_for_each_crtc(crtc, dev) | |
92 | if (idx == crtc->index) | |
93 | return crtc; | |
94 | ||
95 | return NULL; | |
96 | } | |
97 | EXPORT_SYMBOL(drm_crtc_from_index); | |
98 | ||
6a0d9528 LW |
99 | int drm_crtc_force_disable(struct drm_crtc *crtc) |
100 | { | |
101 | struct drm_mode_set set = { | |
102 | .crtc = crtc, | |
103 | }; | |
104 | ||
18dddadc DV |
105 | WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); |
106 | ||
6a0d9528 LW |
107 | return drm_mode_set_config_internal(&set); |
108 | } | |
6a0d9528 | 109 | |
fa3ab4c2 VS |
110 | static unsigned int drm_num_crtcs(struct drm_device *dev) |
111 | { | |
112 | unsigned int num = 0; | |
113 | struct drm_crtc *tmp; | |
114 | ||
115 | drm_for_each_crtc(tmp, dev) { | |
116 | num++; | |
117 | } | |
118 | ||
119 | return num; | |
120 | } | |
121 | ||
28575f16 | 122 | int drm_crtc_register_all(struct drm_device *dev) |
79190ea2 BG |
123 | { |
124 | struct drm_crtc *crtc; | |
125 | int ret = 0; | |
126 | ||
127 | drm_for_each_crtc(crtc, dev) { | |
b792e640 | 128 | drm_debugfs_crtc_add(crtc); |
9edbf1fa | 129 | |
79190ea2 BG |
130 | if (crtc->funcs->late_register) |
131 | ret = crtc->funcs->late_register(crtc); | |
132 | if (ret) | |
133 | return ret; | |
134 | } | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
28575f16 | 139 | void drm_crtc_unregister_all(struct drm_device *dev) |
79190ea2 BG |
140 | { |
141 | struct drm_crtc *crtc; | |
142 | ||
143 | drm_for_each_crtc(crtc, dev) { | |
144 | if (crtc->funcs->early_unregister) | |
145 | crtc->funcs->early_unregister(crtc); | |
9edbf1fa | 146 | drm_debugfs_crtc_remove(crtc); |
79190ea2 BG |
147 | } |
148 | } | |
149 | ||
9edbf1fa TV |
150 | static int drm_crtc_crc_init(struct drm_crtc *crtc) |
151 | { | |
152 | #ifdef CONFIG_DEBUG_FS | |
153 | spin_lock_init(&crtc->crc.lock); | |
154 | init_waitqueue_head(&crtc->crc.wq); | |
155 | crtc->crc.source = kstrdup("auto", GFP_KERNEL); | |
156 | if (!crtc->crc.source) | |
157 | return -ENOMEM; | |
158 | #endif | |
159 | return 0; | |
160 | } | |
161 | ||
162 | static void drm_crtc_crc_fini(struct drm_crtc *crtc) | |
163 | { | |
164 | #ifdef CONFIG_DEBUG_FS | |
165 | kfree(crtc->crc.source); | |
166 | #endif | |
167 | } | |
168 | ||
35f8cc3b GP |
169 | static const struct dma_fence_ops drm_crtc_fence_ops; |
170 | ||
6d6003c4 GP |
171 | static struct drm_crtc *fence_to_crtc(struct dma_fence *fence) |
172 | { | |
173 | BUG_ON(fence->ops != &drm_crtc_fence_ops); | |
174 | return container_of(fence->lock, struct drm_crtc, fence_lock); | |
175 | } | |
176 | ||
177 | static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence) | |
178 | { | |
179 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
180 | ||
181 | return crtc->dev->driver->name; | |
182 | } | |
183 | ||
184 | static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence) | |
185 | { | |
186 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
187 | ||
188 | return crtc->timeline_name; | |
189 | } | |
190 | ||
35f8cc3b | 191 | static const struct dma_fence_ops drm_crtc_fence_ops = { |
6d6003c4 GP |
192 | .get_driver_name = drm_crtc_fence_get_driver_name, |
193 | .get_timeline_name = drm_crtc_fence_get_timeline_name, | |
6d6003c4 GP |
194 | }; |
195 | ||
35f8cc3b GP |
196 | struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc) |
197 | { | |
198 | struct dma_fence *fence; | |
199 | ||
200 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); | |
201 | if (!fence) | |
202 | return NULL; | |
203 | ||
204 | dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock, | |
205 | crtc->fence_context, ++crtc->fence_seqno); | |
206 | ||
207 | return fence; | |
208 | } | |
209 | ||
e954f77f SS |
210 | /** |
211 | * DOC: standard CRTC properties | |
212 | * | |
213 | * DRM CRTCs have a few standardized properties: | |
214 | * | |
215 | * ACTIVE: | |
216 | * Atomic property for setting the power state of the CRTC. When set to 1 | |
217 | * the CRTC will actively display content. When set to 0 the CRTC will be | |
218 | * powered off. There is no expectation that user-space will reset CRTC | |
219 | * resources like the mode and planes when setting ACTIVE to 0. | |
220 | * | |
221 | * User-space can rely on an ACTIVE change to 1 to never fail an atomic | |
222 | * test as long as no other property has changed. If a change to ACTIVE | |
223 | * fails an atomic test, this is a driver bug. For this reason setting | |
224 | * ACTIVE to 0 must not release internal resources (like reserved memory | |
225 | * bandwidth or clock generators). | |
226 | * | |
227 | * Note that the legacy DPMS property on connectors is internally routed | |
228 | * to control this property for atomic drivers. | |
229 | * MODE_ID: | |
230 | * Atomic property for setting the CRTC display timings. The value is the | |
231 | * ID of a blob containing the DRM mode info. To disable the CRTC, | |
232 | * user-space must set this property to 0. | |
233 | * | |
234 | * Setting MODE_ID to 0 will release reserved resources for the CRTC. | |
5c759eda | 235 | * SCALING_FILTER: |
1187ffc4 | 236 | * Atomic property for setting the scaling filter for CRTC scaler |
5c759eda | 237 | * |
1187ffc4 | 238 | * The value of this property can be one of the following: |
5c759eda | 239 | * |
1187ffc4 SS |
240 | * Default: |
241 | * Driver's default scaling filter | |
242 | * Nearest Neighbor: | |
243 | * Nearest Neighbor scaling filter | |
e954f77f SS |
244 | */ |
245 | ||
9dbb70fd PZ |
246 | __printf(6, 0) |
247 | static int __drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, | |
248 | struct drm_plane *primary, | |
249 | struct drm_plane *cursor, | |
250 | const struct drm_crtc_funcs *funcs, | |
251 | const char *name, va_list ap) | |
f453ba04 | 252 | { |
51fd371b | 253 | struct drm_mode_config *config = &dev->mode_config; |
6bfc56aa VS |
254 | int ret; |
255 | ||
522cf91f BG |
256 | WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); |
257 | WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); | |
258 | ||
2a8d3eac VS |
259 | /* crtc index is used with 32bit bitmasks */ |
260 | if (WARN_ON(config->num_crtc >= 32)) | |
261 | return -EINVAL; | |
262 | ||
ba1f665f HM |
263 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
264 | (!funcs->atomic_destroy_state || | |
265 | !funcs->atomic_duplicate_state)); | |
266 | ||
f453ba04 DA |
267 | crtc->dev = dev; |
268 | crtc->funcs = funcs; | |
269 | ||
3b24f7d6 DV |
270 | INIT_LIST_HEAD(&crtc->commit_list); |
271 | spin_lock_init(&crtc->commit_lock); | |
272 | ||
51fd371b | 273 | drm_modeset_lock_init(&crtc->mutex); |
2135ea7a | 274 | ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
6bfc56aa | 275 | if (ret) |
baf698b0 | 276 | return ret; |
f453ba04 | 277 | |
fa3ab4c2 | 278 | if (name) { |
fa3ab4c2 | 279 | crtc->name = kvasprintf(GFP_KERNEL, name, ap); |
fa3ab4c2 VS |
280 | } else { |
281 | crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", | |
282 | drm_num_crtcs(dev)); | |
283 | } | |
284 | if (!crtc->name) { | |
7c8f6d25 | 285 | drm_mode_object_unregister(dev, &crtc->base); |
fa3ab4c2 VS |
286 | return -ENOMEM; |
287 | } | |
288 | ||
6d6003c4 GP |
289 | crtc->fence_context = dma_fence_context_alloc(1); |
290 | spin_lock_init(&crtc->fence_lock); | |
291 | snprintf(crtc->timeline_name, sizeof(crtc->timeline_name), | |
292 | "CRTC:%d-%s", crtc->base.id, crtc->name); | |
293 | ||
bffd9de0 PZ |
294 | crtc->base.properties = &crtc->properties; |
295 | ||
51fd371b | 296 | list_add_tail(&crtc->head, &config->crtc_list); |
490d3d1b | 297 | crtc->index = config->num_crtc++; |
6bfc56aa | 298 | |
e13161af | 299 | crtc->primary = primary; |
fc1d3e44 | 300 | crtc->cursor = cursor; |
7abc7d47 | 301 | if (primary && !primary->possible_crtcs) |
6a52193b | 302 | primary->possible_crtcs = drm_crtc_mask(crtc); |
7abc7d47 | 303 | if (cursor && !cursor->possible_crtcs) |
6a52193b | 304 | cursor->possible_crtcs = drm_crtc_mask(crtc); |
e13161af | 305 | |
9edbf1fa TV |
306 | ret = drm_crtc_crc_init(crtc); |
307 | if (ret) { | |
308 | drm_mode_object_unregister(dev, &crtc->base); | |
309 | return ret; | |
310 | } | |
311 | ||
eab3bbef DV |
312 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
313 | drm_object_attach_property(&crtc->base, config->prop_active, 0); | |
955f3c33 | 314 | drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); |
beaf5af4 GP |
315 | drm_object_attach_property(&crtc->base, |
316 | config->prop_out_fence_ptr, 0); | |
1398958c NK |
317 | drm_object_attach_property(&crtc->base, |
318 | config->prop_vrr_enabled, 0); | |
eab3bbef DV |
319 | } |
320 | ||
baf698b0 | 321 | return 0; |
f453ba04 | 322 | } |
9dbb70fd PZ |
323 | |
324 | /** | |
325 | * drm_crtc_init_with_planes - Initialise a new CRTC object with | |
326 | * specified primary and cursor planes. | |
327 | * @dev: DRM device | |
328 | * @crtc: CRTC object to init | |
329 | * @primary: Primary plane for CRTC | |
330 | * @cursor: Cursor plane for CRTC | |
331 | * @funcs: callbacks for the new CRTC | |
332 | * @name: printf style format string for the CRTC name, or NULL for default name | |
333 | * | |
334 | * Inits a new object created as base part of a driver crtc object. Drivers | |
335 | * should use this function instead of drm_crtc_init(), which is only provided | |
336 | * for backwards compatibility with drivers which do not yet support universal | |
337 | * planes). For really simple hardware which has only 1 plane look at | |
338 | * drm_simple_display_pipe_init() instead. | |
339 | * The &drm_crtc_funcs.destroy hook should call drm_crtc_cleanup() and kfree() | |
340 | * the crtc structure. The crtc structure should not be allocated with | |
341 | * devm_kzalloc(). | |
342 | * | |
e240cc76 DV |
343 | * The @primary and @cursor planes are only relevant for legacy uAPI, see |
344 | * &drm_crtc.primary and &drm_crtc.cursor. | |
345 | * | |
917dd054 MR |
346 | * Note: consider using drmm_crtc_alloc_with_planes() or |
347 | * drmm_crtc_init_with_planes() instead of drm_crtc_init_with_planes() | |
348 | * to let the DRM managed resource infrastructure take care of cleanup | |
349 | * and deallocation. | |
9dbb70fd PZ |
350 | * |
351 | * Returns: | |
352 | * Zero on success, error code on failure. | |
353 | */ | |
354 | int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, | |
355 | struct drm_plane *primary, | |
356 | struct drm_plane *cursor, | |
357 | const struct drm_crtc_funcs *funcs, | |
358 | const char *name, ...) | |
359 | { | |
360 | va_list ap; | |
361 | int ret; | |
362 | ||
363 | WARN_ON(!funcs->destroy); | |
364 | ||
365 | va_start(ap, name); | |
366 | ret = __drm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs, | |
367 | name, ap); | |
368 | va_end(ap); | |
369 | ||
370 | return ret; | |
371 | } | |
e13161af | 372 | EXPORT_SYMBOL(drm_crtc_init_with_planes); |
f453ba04 | 373 | |
917dd054 MR |
374 | static void drmm_crtc_init_with_planes_cleanup(struct drm_device *dev, |
375 | void *ptr) | |
9dbb70fd PZ |
376 | { |
377 | struct drm_crtc *crtc = ptr; | |
378 | ||
379 | drm_crtc_cleanup(crtc); | |
380 | } | |
381 | ||
917dd054 MR |
382 | __printf(6, 0) |
383 | static int __drmm_crtc_init_with_planes(struct drm_device *dev, | |
384 | struct drm_crtc *crtc, | |
385 | struct drm_plane *primary, | |
386 | struct drm_plane *cursor, | |
387 | const struct drm_crtc_funcs *funcs, | |
388 | const char *name, | |
389 | va_list args) | |
390 | { | |
391 | int ret; | |
392 | ||
393 | drm_WARN_ON(dev, funcs && funcs->destroy); | |
394 | ||
395 | ret = __drm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs, | |
396 | name, args); | |
397 | if (ret) | |
398 | return ret; | |
399 | ||
400 | ret = drmm_add_action_or_reset(dev, drmm_crtc_init_with_planes_cleanup, | |
401 | crtc); | |
402 | if (ret) | |
403 | return ret; | |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
408 | /** | |
409 | * drmm_crtc_init_with_planes - Initialise a new CRTC object with | |
410 | * specified primary and cursor planes. | |
411 | * @dev: DRM device | |
412 | * @crtc: CRTC object to init | |
413 | * @primary: Primary plane for CRTC | |
414 | * @cursor: Cursor plane for CRTC | |
415 | * @funcs: callbacks for the new CRTC | |
416 | * @name: printf style format string for the CRTC name, or NULL for default name | |
417 | * | |
418 | * Inits a new object created as base part of a driver crtc object. Drivers | |
419 | * should use this function instead of drm_crtc_init(), which is only provided | |
420 | * for backwards compatibility with drivers which do not yet support universal | |
421 | * planes). For really simple hardware which has only 1 plane look at | |
422 | * drm_simple_display_pipe_init() instead. | |
423 | * | |
424 | * Cleanup is automatically handled through registering | |
425 | * drmm_crtc_cleanup() with drmm_add_action(). The crtc structure should | |
426 | * be allocated with drmm_kzalloc(). | |
427 | * | |
428 | * The @drm_crtc_funcs.destroy hook must be NULL. | |
429 | * | |
430 | * The @primary and @cursor planes are only relevant for legacy uAPI, see | |
431 | * &drm_crtc.primary and &drm_crtc.cursor. | |
432 | * | |
433 | * Returns: | |
434 | * Zero on success, error code on failure. | |
435 | */ | |
436 | int drmm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, | |
437 | struct drm_plane *primary, | |
438 | struct drm_plane *cursor, | |
439 | const struct drm_crtc_funcs *funcs, | |
440 | const char *name, ...) | |
441 | { | |
442 | va_list ap; | |
443 | int ret; | |
444 | ||
445 | va_start(ap, name); | |
446 | ret = __drmm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs, | |
447 | name, ap); | |
448 | va_end(ap); | |
449 | if (ret) | |
450 | return ret; | |
451 | ||
452 | return 0; | |
453 | } | |
454 | EXPORT_SYMBOL(drmm_crtc_init_with_planes); | |
455 | ||
9dbb70fd PZ |
456 | void *__drmm_crtc_alloc_with_planes(struct drm_device *dev, |
457 | size_t size, size_t offset, | |
458 | struct drm_plane *primary, | |
459 | struct drm_plane *cursor, | |
460 | const struct drm_crtc_funcs *funcs, | |
461 | const char *name, ...) | |
462 | { | |
463 | void *container; | |
464 | struct drm_crtc *crtc; | |
465 | va_list ap; | |
466 | int ret; | |
467 | ||
468 | if (WARN_ON(!funcs || funcs->destroy)) | |
469 | return ERR_PTR(-EINVAL); | |
470 | ||
471 | container = drmm_kzalloc(dev, size, GFP_KERNEL); | |
472 | if (!container) | |
473 | return ERR_PTR(-ENOMEM); | |
474 | ||
475 | crtc = container + offset; | |
476 | ||
477 | va_start(ap, name); | |
917dd054 MR |
478 | ret = __drmm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs, |
479 | name, ap); | |
9dbb70fd PZ |
480 | va_end(ap); |
481 | if (ret) | |
482 | return ERR_PTR(ret); | |
483 | ||
9dbb70fd PZ |
484 | return container; |
485 | } | |
486 | EXPORT_SYMBOL(__drmm_crtc_alloc_with_planes); | |
487 | ||
f453ba04 | 488 | /** |
ad6f5c34 | 489 | * drm_crtc_cleanup - Clean up the core crtc usage |
f453ba04 DA |
490 | * @crtc: CRTC to cleanup |
491 | * | |
ad6f5c34 VS |
492 | * This function cleans up @crtc and removes it from the DRM mode setting |
493 | * core. Note that the function does *not* free the crtc structure itself, | |
494 | * this is the responsibility of the caller. | |
f453ba04 DA |
495 | */ |
496 | void drm_crtc_cleanup(struct drm_crtc *crtc) | |
497 | { | |
498 | struct drm_device *dev = crtc->dev; | |
499 | ||
490d3d1b CW |
500 | /* Note that the crtc_list is considered to be static; should we |
501 | * remove the drm_crtc at runtime we would have to decrement all | |
502 | * the indices on the drm_crtc after us in the crtc_list. | |
503 | */ | |
504 | ||
9edbf1fa TV |
505 | drm_crtc_crc_fini(crtc); |
506 | ||
9e1c156f SK |
507 | kfree(crtc->gamma_store); |
508 | crtc->gamma_store = NULL; | |
f453ba04 | 509 | |
51fd371b RC |
510 | drm_modeset_lock_fini(&crtc->mutex); |
511 | ||
7c8f6d25 | 512 | drm_mode_object_unregister(dev, &crtc->base); |
f453ba04 DA |
513 | list_del(&crtc->head); |
514 | dev->mode_config.num_crtc--; | |
3009c037 TR |
515 | |
516 | WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); | |
517 | if (crtc->state && crtc->funcs->atomic_destroy_state) | |
518 | crtc->funcs->atomic_destroy_state(crtc, crtc->state); | |
a18c0af1 | 519 | |
fa3ab4c2 VS |
520 | kfree(crtc->name); |
521 | ||
a18c0af1 | 522 | memset(crtc, 0, sizeof(*crtc)); |
f453ba04 DA |
523 | } |
524 | EXPORT_SYMBOL(drm_crtc_cleanup); | |
525 | ||
f453ba04 DA |
526 | /** |
527 | * drm_mode_getcrtc - get CRTC configuration | |
065a50ed DV |
528 | * @dev: drm device for the ioctl |
529 | * @data: data pointer for the ioctl | |
530 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 531 | * |
f453ba04 DA |
532 | * Construct a CRTC configuration structure to return to the user. |
533 | * | |
534 | * Called by the user via ioctl. | |
535 | * | |
c8e32cc1 | 536 | * Returns: |
1a498633 | 537 | * Zero on success, negative errno on failure. |
f453ba04 DA |
538 | */ |
539 | int drm_mode_getcrtc(struct drm_device *dev, | |
540 | void *data, struct drm_file *file_priv) | |
541 | { | |
542 | struct drm_mode_crtc *crtc_resp = data; | |
543 | struct drm_crtc *crtc; | |
64c32b49 | 544 | struct drm_plane *plane; |
f453ba04 | 545 | |
fb3b06c8 | 546 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
69fdf420 | 547 | return -EOPNOTSUPP; |
fb3b06c8 | 548 | |
418da172 | 549 | crtc = drm_crtc_find(dev, file_priv, crtc_resp->crtc_id); |
fcf93f69 DV |
550 | if (!crtc) |
551 | return -ENOENT; | |
f453ba04 | 552 | |
64c32b49 VS |
553 | plane = crtc->primary; |
554 | ||
f453ba04 | 555 | crtc_resp->gamma_size = crtc->gamma_size; |
de7b6be7 | 556 | |
64c32b49 VS |
557 | drm_modeset_lock(&plane->mutex, NULL); |
558 | if (plane->state && plane->state->fb) | |
559 | crtc_resp->fb_id = plane->state->fb->base.id; | |
560 | else if (!plane->state && plane->fb) | |
561 | crtc_resp->fb_id = plane->fb->base.id; | |
f453ba04 DA |
562 | else |
563 | crtc_resp->fb_id = 0; | |
564 | ||
64c32b49 VS |
565 | if (plane->state) { |
566 | crtc_resp->x = plane->state->src_x >> 16; | |
567 | crtc_resp->y = plane->state->src_y >> 16; | |
2c77bb29 | 568 | } |
64c32b49 | 569 | drm_modeset_unlock(&plane->mutex); |
2c77bb29 DV |
570 | |
571 | drm_modeset_lock(&crtc->mutex, NULL); | |
572 | if (crtc->state) { | |
31c946e8 | 573 | if (crtc->state->enable) { |
934a8a89 | 574 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); |
31c946e8 | 575 | crtc_resp->mode_valid = 1; |
31c946e8 DV |
576 | } else { |
577 | crtc_resp->mode_valid = 0; | |
578 | } | |
f453ba04 | 579 | } else { |
31c946e8 DV |
580 | crtc_resp->x = crtc->x; |
581 | crtc_resp->y = crtc->y; | |
bf2d5eb9 | 582 | |
31c946e8 | 583 | if (crtc->enabled) { |
934a8a89 | 584 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); |
31c946e8 DV |
585 | crtc_resp->mode_valid = 1; |
586 | ||
587 | } else { | |
588 | crtc_resp->mode_valid = 0; | |
589 | } | |
f453ba04 | 590 | } |
ace5bf0e AN |
591 | if (!file_priv->aspect_ratio_allowed) |
592 | crtc_resp->mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; | |
2c77bb29 | 593 | drm_modeset_unlock(&crtc->mutex); |
f453ba04 | 594 | |
baf698b0 | 595 | return 0; |
f453ba04 DA |
596 | } |
597 | ||
2ceb585a DV |
598 | static int __drm_mode_set_config_internal(struct drm_mode_set *set, |
599 | struct drm_modeset_acquire_ctx *ctx) | |
2d13b679 DV |
600 | { |
601 | struct drm_crtc *crtc = set->crtc; | |
5cef29aa DV |
602 | struct drm_framebuffer *fb; |
603 | struct drm_crtc *tmp; | |
b0d12325 DV |
604 | int ret; |
605 | ||
69a8a196 VS |
606 | WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); |
607 | ||
5cef29aa DV |
608 | /* |
609 | * NOTE: ->set_config can also disable other crtcs (if we steal all | |
610 | * connectors from it), hence we need to refcount the fbs across all | |
611 | * crtcs. Atomic modeset will have saner semantics ... | |
612 | */ | |
3ed70ecd VS |
613 | drm_for_each_crtc(tmp, crtc->dev) { |
614 | struct drm_plane *plane = tmp->primary; | |
615 | ||
616 | plane->old_fb = plane->fb; | |
617 | } | |
5cef29aa | 618 | |
b0d12325 | 619 | fb = set->fb; |
2d13b679 | 620 | |
a4eff9aa | 621 | ret = crtc->funcs->set_config(set, ctx); |
b0d12325 | 622 | if (ret == 0) { |
e00fb856 VS |
623 | struct drm_plane *plane = crtc->primary; |
624 | ||
69a8a196 VS |
625 | plane->crtc = fb ? crtc : NULL; |
626 | plane->fb = fb; | |
5cef29aa | 627 | } |
cc85e121 | 628 | |
e4f62546 | 629 | drm_for_each_crtc(tmp, crtc->dev) { |
3ed70ecd VS |
630 | struct drm_plane *plane = tmp->primary; |
631 | ||
632 | if (plane->fb) | |
633 | drm_framebuffer_get(plane->fb); | |
634 | if (plane->old_fb) | |
635 | drm_framebuffer_put(plane->old_fb); | |
636 | plane->old_fb = NULL; | |
b0d12325 DV |
637 | } |
638 | ||
639 | return ret; | |
2d13b679 | 640 | } |
69a8a196 | 641 | |
d49473a5 DV |
642 | /** |
643 | * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config | |
644 | * @set: modeset config to set | |
645 | * | |
646 | * This is a little helper to wrap internal calls to the | |
647 | * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is | |
648 | * correct refcounting dance. | |
649 | * | |
650 | * This should only be used by non-atomic legacy drivers. | |
651 | * | |
652 | * Returns: | |
653 | * Zero on success, negative errno on failure. | |
654 | */ | |
655 | int drm_mode_set_config_internal(struct drm_mode_set *set) | |
656 | { | |
657 | WARN_ON(drm_drv_uses_atomic_modeset(set->crtc->dev)); | |
658 | ||
2ceb585a | 659 | return __drm_mode_set_config_internal(set, NULL); |
d49473a5 | 660 | } |
2d13b679 DV |
661 | EXPORT_SYMBOL(drm_mode_set_config_internal); |
662 | ||
af93629d MR |
663 | /** |
664 | * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the | |
665 | * CRTC viewport | |
666 | * @crtc: CRTC that framebuffer will be displayed on | |
667 | * @x: x panning | |
668 | * @y: y panning | |
669 | * @mode: mode that framebuffer will be displayed under | |
670 | * @fb: framebuffer to check size of | |
c11e9283 | 671 | */ |
af93629d MR |
672 | int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
673 | int x, int y, | |
674 | const struct drm_display_mode *mode, | |
675 | const struct drm_framebuffer *fb) | |
c11e9283 DL |
676 | |
677 | { | |
678 | int hdisplay, vdisplay; | |
679 | ||
196cd5d3 | 680 | drm_mode_get_hv_timing(mode, &hdisplay, &vdisplay); |
a0c1bbb0 | 681 | |
33e0be63 | 682 | if (crtc->state && |
bd2ef25d | 683 | drm_rotation_90_or_270(crtc->primary->state->rotation)) |
c11e9283 DL |
684 | swap(hdisplay, vdisplay); |
685 | ||
43968d7b DV |
686 | return drm_framebuffer_check_src_coords(x << 16, y << 16, |
687 | hdisplay << 16, vdisplay << 16, | |
688 | fb); | |
c11e9283 | 689 | } |
af93629d | 690 | EXPORT_SYMBOL(drm_crtc_check_viewport); |
c11e9283 | 691 | |
f453ba04 DA |
692 | /** |
693 | * drm_mode_setcrtc - set CRTC configuration | |
065a50ed DV |
694 | * @dev: drm device for the ioctl |
695 | * @data: data pointer for the ioctl | |
696 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 697 | * |
f453ba04 DA |
698 | * Build a new CRTC configuration based on user request. |
699 | * | |
700 | * Called by the user via ioctl. | |
701 | * | |
c8e32cc1 | 702 | * Returns: |
1a498633 | 703 | * Zero on success, negative errno on failure. |
f453ba04 DA |
704 | */ |
705 | int drm_mode_setcrtc(struct drm_device *dev, void *data, | |
706 | struct drm_file *file_priv) | |
707 | { | |
708 | struct drm_mode_config *config = &dev->mode_config; | |
709 | struct drm_mode_crtc *crtc_req = data; | |
6653cc8d | 710 | struct drm_crtc *crtc; |
64c32b49 | 711 | struct drm_plane *plane; |
c232e9f4 SP |
712 | struct drm_connector **connector_set = NULL, *connector; |
713 | struct drm_framebuffer *fb = NULL; | |
714 | struct drm_display_mode *mode = NULL; | |
f453ba04 DA |
715 | struct drm_mode_set set; |
716 | uint32_t __user *set_connectors_ptr; | |
2ceb585a | 717 | struct drm_modeset_acquire_ctx ctx; |
6e455f5d | 718 | int ret, i, num_connectors = 0; |
f453ba04 | 719 | |
fb3b06c8 | 720 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
69fdf420 | 721 | return -EOPNOTSUPP; |
fb3b06c8 | 722 | |
01447e9f ZJ |
723 | /* |
724 | * Universal plane src offsets are only 16.16, prevent havoc for | |
725 | * drivers using universal plane code internally. | |
726 | */ | |
727 | if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) | |
1d97e915 VS |
728 | return -ERANGE; |
729 | ||
418da172 | 730 | crtc = drm_crtc_find(dev, file_priv, crtc_req->crtc_id); |
a2b34e22 | 731 | if (!crtc) { |
58367ed6 | 732 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); |
2ceb585a | 733 | return -ENOENT; |
f453ba04 | 734 | } |
fa3ab4c2 | 735 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
f453ba04 | 736 | |
64c32b49 VS |
737 | plane = crtc->primary; |
738 | ||
204f640d DV |
739 | /* allow disabling with the primary plane leased */ |
740 | if (crtc_req->mode_valid && !drm_lease_held(file_priv, plane->base.id)) | |
741 | return -EACCES; | |
742 | ||
b7ea04d2 SP |
743 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, |
744 | DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret); | |
bf2d5eb9 | 745 | |
f453ba04 DA |
746 | if (crtc_req->mode_valid) { |
747 | /* If we have a mode we need a framebuffer. */ | |
748 | /* If we pass -1, set the mode with the currently bound fb */ | |
749 | if (crtc_req->fb_id == -1) { | |
a36c027d VS |
750 | struct drm_framebuffer *old_fb; |
751 | ||
752 | if (plane->state) | |
753 | old_fb = plane->state->fb; | |
754 | else | |
755 | old_fb = plane->fb; | |
756 | ||
757 | if (!old_fb) { | |
6653cc8d VS |
758 | DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); |
759 | ret = -EINVAL; | |
760 | goto out; | |
f453ba04 | 761 | } |
bf2d5eb9 | 762 | |
a36c027d | 763 | fb = old_fb; |
b0d12325 | 764 | /* Make refcounting symmetric with the lookup path. */ |
a4a69da0 | 765 | drm_framebuffer_get(fb); |
f453ba04 | 766 | } else { |
418da172 | 767 | fb = drm_framebuffer_lookup(dev, file_priv, crtc_req->fb_id); |
786b99ed | 768 | if (!fb) { |
58367ed6 ZY |
769 | DRM_DEBUG_KMS("Unknown FB ID%d\n", |
770 | crtc_req->fb_id); | |
37c4e705 | 771 | ret = -ENOENT; |
f453ba04 DA |
772 | goto out; |
773 | } | |
f453ba04 DA |
774 | } |
775 | ||
776 | mode = drm_mode_create(dev); | |
ee34ab5b VS |
777 | if (!mode) { |
778 | ret = -ENOMEM; | |
779 | goto out; | |
780 | } | |
ace5bf0e AN |
781 | if (!file_priv->aspect_ratio_allowed && |
782 | (crtc_req->mode.flags & DRM_MODE_FLAG_PIC_AR_MASK) != DRM_MODE_FLAG_PIC_AR_NONE) { | |
783 | DRM_DEBUG_KMS("Unexpected aspect-ratio flag bits\n"); | |
784 | ret = -EINVAL; | |
785 | goto out; | |
786 | } | |
787 | ||
ee34ab5b | 788 | |
75a655e0 | 789 | ret = drm_mode_convert_umode(dev, mode, &crtc_req->mode); |
90367bf6 | 790 | if (ret) { |
6ab0edf4 VS |
791 | DRM_DEBUG_KMS("Invalid mode (ret=%d, status=%s)\n", |
792 | ret, drm_get_mode_status_name(mode->status)); | |
793 | drm_mode_debug_printmodeline(mode); | |
90367bf6 VS |
794 | goto out; |
795 | } | |
796 | ||
7eb5f302 LP |
797 | /* |
798 | * Check whether the primary plane supports the fb pixel format. | |
799 | * Drivers not implementing the universal planes API use a | |
800 | * default formats list provided by the DRM core which doesn't | |
801 | * match real hardware capabilities. Skip the check in that | |
802 | * case. | |
803 | */ | |
64c32b49 VS |
804 | if (!plane->format_default) { |
805 | ret = drm_plane_check_pixel_format(plane, | |
23163a7d VS |
806 | fb->format->format, |
807 | fb->modifier); | |
7eb5f302 | 808 | if (ret) { |
92f1d09c SA |
809 | DRM_DEBUG_KMS("Invalid pixel format %p4cc, modifier 0x%llx\n", |
810 | &fb->format->format, | |
23163a7d | 811 | fb->modifier); |
7eb5f302 LP |
812 | goto out; |
813 | } | |
814 | } | |
815 | ||
c11e9283 DL |
816 | ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
817 | mode, fb); | |
818 | if (ret) | |
5f61bb42 | 819 | goto out; |
c11e9283 | 820 | |
f453ba04 DA |
821 | } |
822 | ||
823 | if (crtc_req->count_connectors == 0 && mode) { | |
58367ed6 | 824 | DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); |
f453ba04 DA |
825 | ret = -EINVAL; |
826 | goto out; | |
827 | } | |
828 | ||
7781de74 | 829 | if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
58367ed6 | 830 | DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", |
f453ba04 DA |
831 | crtc_req->count_connectors); |
832 | ret = -EINVAL; | |
833 | goto out; | |
834 | } | |
835 | ||
836 | if (crtc_req->count_connectors > 0) { | |
837 | u32 out_id; | |
838 | ||
839 | /* Avoid unbounded kernel memory allocation */ | |
840 | if (crtc_req->count_connectors > config->num_connector) { | |
841 | ret = -EINVAL; | |
842 | goto out; | |
843 | } | |
844 | ||
2f6c5389 TR |
845 | connector_set = kmalloc_array(crtc_req->count_connectors, |
846 | sizeof(struct drm_connector *), | |
847 | GFP_KERNEL); | |
f453ba04 DA |
848 | if (!connector_set) { |
849 | ret = -ENOMEM; | |
850 | goto out; | |
851 | } | |
852 | ||
853 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
b164d31f | 854 | connector_set[i] = NULL; |
81f6c7f8 | 855 | set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
f453ba04 DA |
856 | if (get_user(out_id, &set_connectors_ptr[i])) { |
857 | ret = -EFAULT; | |
858 | goto out; | |
859 | } | |
860 | ||
418da172 | 861 | connector = drm_connector_lookup(dev, file_priv, out_id); |
a2b34e22 | 862 | if (!connector) { |
58367ed6 ZY |
863 | DRM_DEBUG_KMS("Connector id %d unknown\n", |
864 | out_id); | |
f27657f2 | 865 | ret = -ENOENT; |
f453ba04 DA |
866 | goto out; |
867 | } | |
9440106b JG |
868 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
869 | connector->base.id, | |
25933820 | 870 | connector->name); |
f453ba04 DA |
871 | |
872 | connector_set[i] = connector; | |
3823119b | 873 | num_connectors++; |
f453ba04 DA |
874 | } |
875 | } | |
876 | ||
877 | set.crtc = crtc; | |
878 | set.x = crtc_req->x; | |
879 | set.y = crtc_req->y; | |
880 | set.mode = mode; | |
881 | set.connectors = connector_set; | |
3823119b | 882 | set.num_connectors = num_connectors; |
5ef5f72f | 883 | set.fb = fb; |
69a8a196 VS |
884 | |
885 | if (drm_drv_uses_atomic_modeset(dev)) | |
886 | ret = crtc->funcs->set_config(&set, &ctx); | |
887 | else | |
888 | ret = __drm_mode_set_config_internal(&set, &ctx); | |
f453ba04 DA |
889 | |
890 | out: | |
b0d12325 | 891 | if (fb) |
a4a69da0 | 892 | drm_framebuffer_put(fb); |
b0d12325 | 893 | |
b164d31f | 894 | if (connector_set) { |
3823119b | 895 | for (i = 0; i < num_connectors; i++) { |
b164d31f | 896 | if (connector_set[i]) |
ad093607 | 897 | drm_connector_put(connector_set[i]); |
b164d31f DA |
898 | } |
899 | } | |
f453ba04 | 900 | kfree(connector_set); |
ee34ab5b | 901 | drm_mode_destroy(dev, mode); |
c232e9f4 SP |
902 | |
903 | /* In case we need to retry... */ | |
904 | connector_set = NULL; | |
905 | fb = NULL; | |
906 | mode = NULL; | |
907 | ||
77ef3857 | 908 | DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); |
2ceb585a | 909 | |
f453ba04 DA |
910 | return ret; |
911 | } | |
912 | ||
949619f3 DV |
913 | int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, |
914 | struct drm_property *property, | |
915 | uint64_t value) | |
4a67d391 | 916 | { |
bffd9de0 PZ |
917 | int ret = -EINVAL; |
918 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
4a67d391 | 919 | |
bffd9de0 PZ |
920 | if (crtc->funcs->set_property) |
921 | ret = crtc->funcs->set_property(crtc, property, value); | |
144a7999 | 922 | if (!ret) |
bffd9de0 | 923 | drm_object_property_set_value(obj, property, value); |
4a67d391 | 924 | |
bffd9de0 | 925 | return ret; |
4a67d391 | 926 | } |
5c759eda PB |
927 | |
928 | /** | |
929 | * drm_crtc_create_scaling_filter_property - create a new scaling filter | |
930 | * property | |
931 | * | |
932 | * @crtc: drm CRTC | |
933 | * @supported_filters: bitmask of supported scaling filters, must include | |
934 | * BIT(DRM_SCALING_FILTER_DEFAULT). | |
935 | * | |
936 | * This function lets driver to enable the scaling filter property on a given | |
937 | * CRTC. | |
938 | * | |
939 | * RETURNS: | |
940 | * Zero for success or -errno | |
941 | */ | |
942 | int drm_crtc_create_scaling_filter_property(struct drm_crtc *crtc, | |
943 | unsigned int supported_filters) | |
944 | { | |
945 | struct drm_property *prop = | |
946 | drm_create_scaling_filter_prop(crtc->dev, supported_filters); | |
947 | ||
948 | if (IS_ERR(prop)) | |
949 | return PTR_ERR(prop); | |
950 | ||
951 | drm_object_attach_property(&crtc->base, prop, | |
952 | DRM_SCALING_FILTER_DEFAULT); | |
953 | crtc->scaling_filter_property = prop; | |
954 | ||
955 | return 0; | |
956 | } | |
957 | EXPORT_SYMBOL(drm_crtc_create_scaling_filter_property); |