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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> |
760285e7 DH |
38 | #include <drm/drm_crtc.h> |
39 | #include <drm/drm_edid.h> | |
40 | #include <drm/drm_fourcc.h> | |
9dbb70fd | 41 | #include <drm/drm_managed.h> |
51fd371b | 42 | #include <drm/drm_modeset_lock.h> |
88a48e29 | 43 | #include <drm/drm_atomic.h> |
3b96a0b1 | 44 | #include <drm/drm_auth.h> |
9edbf1fa | 45 | #include <drm/drm_debugfs_crc.h> |
e6120d64 DV |
46 | #include <drm/drm_drv.h> |
47 | #include <drm/drm_print.h> | |
48 | #include <drm/drm_file.h> | |
f453ba04 | 49 | |
8bd441b2 | 50 | #include "drm_crtc_internal.h" |
67d0ec4e | 51 | #include "drm_internal.h" |
8bd441b2 | 52 | |
d5d487eb DV |
53 | /** |
54 | * DOC: overview | |
55 | * | |
56 | * A CRTC represents the overall display pipeline. It receives pixel data from | |
57 | * &drm_plane and blends them together. The &drm_display_mode is also attached | |
58 | * to the CRTC, specifying display timings. On the output side the data is fed | |
59 | * to one or more &drm_encoder, which are then each connected to one | |
60 | * &drm_connector. | |
61 | * | |
62 | * To create a CRTC, a KMS drivers allocates and zeroes an instances of | |
63 | * &struct drm_crtc (possibly as part of a larger structure) and registers it | |
64 | * with a call to drm_crtc_init_with_planes(). | |
65 | * | |
66 | * The CRTC is also the entry point for legacy modeset operations, see | |
67 | * &drm_crtc_funcs.set_config, legacy plane operations, see | |
68 | * &drm_crtc_funcs.page_flip and &drm_crtc_funcs.cursor_set2, and other legacy | |
69 | * operations like &drm_crtc_funcs.gamma_set. For atomic drivers all these | |
70 | * features are controlled through &drm_property and | |
a3d0d834 | 71 | * &drm_mode_config_funcs.atomic_check. |
d5d487eb DV |
72 | */ |
73 | ||
6d1b81d8 SG |
74 | /** |
75 | * drm_crtc_from_index - find the registered CRTC at an index | |
76 | * @dev: DRM device | |
77 | * @idx: index of registered CRTC to find for | |
78 | * | |
79 | * Given a CRTC index, return the registered CRTC from DRM device's | |
931c670d SG |
80 | * list of CRTCs with matching index. This is the inverse of drm_crtc_index(). |
81 | * It's useful in the vblank callbacks (like &drm_driver.enable_vblank or | |
82 | * &drm_driver.disable_vblank), since that still deals with indices instead | |
83 | * of pointers to &struct drm_crtc." | |
6d1b81d8 SG |
84 | */ |
85 | struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx) | |
86 | { | |
87 | struct drm_crtc *crtc; | |
88 | ||
89 | drm_for_each_crtc(crtc, dev) | |
90 | if (idx == crtc->index) | |
91 | return crtc; | |
92 | ||
93 | return NULL; | |
94 | } | |
95 | EXPORT_SYMBOL(drm_crtc_from_index); | |
96 | ||
6a0d9528 LW |
97 | int drm_crtc_force_disable(struct drm_crtc *crtc) |
98 | { | |
99 | struct drm_mode_set set = { | |
100 | .crtc = crtc, | |
101 | }; | |
102 | ||
18dddadc DV |
103 | WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); |
104 | ||
6a0d9528 LW |
105 | return drm_mode_set_config_internal(&set); |
106 | } | |
6a0d9528 | 107 | |
fa3ab4c2 VS |
108 | static unsigned int drm_num_crtcs(struct drm_device *dev) |
109 | { | |
110 | unsigned int num = 0; | |
111 | struct drm_crtc *tmp; | |
112 | ||
113 | drm_for_each_crtc(tmp, dev) { | |
114 | num++; | |
115 | } | |
116 | ||
117 | return num; | |
118 | } | |
119 | ||
28575f16 | 120 | int drm_crtc_register_all(struct drm_device *dev) |
79190ea2 BG |
121 | { |
122 | struct drm_crtc *crtc; | |
123 | int ret = 0; | |
124 | ||
125 | drm_for_each_crtc(crtc, dev) { | |
b792e640 | 126 | drm_debugfs_crtc_add(crtc); |
9edbf1fa | 127 | |
79190ea2 BG |
128 | if (crtc->funcs->late_register) |
129 | ret = crtc->funcs->late_register(crtc); | |
130 | if (ret) | |
131 | return ret; | |
132 | } | |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
28575f16 | 137 | void drm_crtc_unregister_all(struct drm_device *dev) |
79190ea2 BG |
138 | { |
139 | struct drm_crtc *crtc; | |
140 | ||
141 | drm_for_each_crtc(crtc, dev) { | |
142 | if (crtc->funcs->early_unregister) | |
143 | crtc->funcs->early_unregister(crtc); | |
9edbf1fa | 144 | drm_debugfs_crtc_remove(crtc); |
79190ea2 BG |
145 | } |
146 | } | |
147 | ||
9edbf1fa TV |
148 | static int drm_crtc_crc_init(struct drm_crtc *crtc) |
149 | { | |
150 | #ifdef CONFIG_DEBUG_FS | |
151 | spin_lock_init(&crtc->crc.lock); | |
152 | init_waitqueue_head(&crtc->crc.wq); | |
153 | crtc->crc.source = kstrdup("auto", GFP_KERNEL); | |
154 | if (!crtc->crc.source) | |
155 | return -ENOMEM; | |
156 | #endif | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static void drm_crtc_crc_fini(struct drm_crtc *crtc) | |
161 | { | |
162 | #ifdef CONFIG_DEBUG_FS | |
163 | kfree(crtc->crc.source); | |
164 | #endif | |
165 | } | |
166 | ||
35f8cc3b GP |
167 | static const struct dma_fence_ops drm_crtc_fence_ops; |
168 | ||
6d6003c4 GP |
169 | static struct drm_crtc *fence_to_crtc(struct dma_fence *fence) |
170 | { | |
171 | BUG_ON(fence->ops != &drm_crtc_fence_ops); | |
172 | return container_of(fence->lock, struct drm_crtc, fence_lock); | |
173 | } | |
174 | ||
175 | static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence) | |
176 | { | |
177 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
178 | ||
179 | return crtc->dev->driver->name; | |
180 | } | |
181 | ||
182 | static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence) | |
183 | { | |
184 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
185 | ||
186 | return crtc->timeline_name; | |
187 | } | |
188 | ||
35f8cc3b | 189 | static const struct dma_fence_ops drm_crtc_fence_ops = { |
6d6003c4 GP |
190 | .get_driver_name = drm_crtc_fence_get_driver_name, |
191 | .get_timeline_name = drm_crtc_fence_get_timeline_name, | |
6d6003c4 GP |
192 | }; |
193 | ||
35f8cc3b GP |
194 | struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc) |
195 | { | |
196 | struct dma_fence *fence; | |
197 | ||
198 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); | |
199 | if (!fence) | |
200 | return NULL; | |
201 | ||
202 | dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock, | |
203 | crtc->fence_context, ++crtc->fence_seqno); | |
204 | ||
205 | return fence; | |
206 | } | |
207 | ||
e954f77f SS |
208 | /** |
209 | * DOC: standard CRTC properties | |
210 | * | |
211 | * DRM CRTCs have a few standardized properties: | |
212 | * | |
213 | * ACTIVE: | |
214 | * Atomic property for setting the power state of the CRTC. When set to 1 | |
215 | * the CRTC will actively display content. When set to 0 the CRTC will be | |
216 | * powered off. There is no expectation that user-space will reset CRTC | |
217 | * resources like the mode and planes when setting ACTIVE to 0. | |
218 | * | |
219 | * User-space can rely on an ACTIVE change to 1 to never fail an atomic | |
220 | * test as long as no other property has changed. If a change to ACTIVE | |
221 | * fails an atomic test, this is a driver bug. For this reason setting | |
222 | * ACTIVE to 0 must not release internal resources (like reserved memory | |
223 | * bandwidth or clock generators). | |
224 | * | |
225 | * Note that the legacy DPMS property on connectors is internally routed | |
226 | * to control this property for atomic drivers. | |
227 | * MODE_ID: | |
228 | * Atomic property for setting the CRTC display timings. The value is the | |
229 | * ID of a blob containing the DRM mode info. To disable the CRTC, | |
230 | * user-space must set this property to 0. | |
231 | * | |
232 | * Setting MODE_ID to 0 will release reserved resources for the CRTC. | |
5c759eda | 233 | * SCALING_FILTER: |
1187ffc4 | 234 | * Atomic property for setting the scaling filter for CRTC scaler |
5c759eda | 235 | * |
1187ffc4 | 236 | * The value of this property can be one of the following: |
5c759eda | 237 | * |
1187ffc4 SS |
238 | * Default: |
239 | * Driver's default scaling filter | |
240 | * Nearest Neighbor: | |
241 | * Nearest Neighbor scaling filter | |
e954f77f SS |
242 | */ |
243 | ||
9dbb70fd PZ |
244 | __printf(6, 0) |
245 | static int __drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, | |
246 | struct drm_plane *primary, | |
247 | struct drm_plane *cursor, | |
248 | const struct drm_crtc_funcs *funcs, | |
249 | const char *name, va_list ap) | |
f453ba04 | 250 | { |
51fd371b | 251 | struct drm_mode_config *config = &dev->mode_config; |
6bfc56aa VS |
252 | int ret; |
253 | ||
522cf91f BG |
254 | WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); |
255 | WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); | |
256 | ||
2a8d3eac VS |
257 | /* crtc index is used with 32bit bitmasks */ |
258 | if (WARN_ON(config->num_crtc >= 32)) | |
259 | return -EINVAL; | |
260 | ||
ba1f665f HM |
261 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
262 | (!funcs->atomic_destroy_state || | |
263 | !funcs->atomic_duplicate_state)); | |
264 | ||
f453ba04 DA |
265 | crtc->dev = dev; |
266 | crtc->funcs = funcs; | |
267 | ||
3b24f7d6 DV |
268 | INIT_LIST_HEAD(&crtc->commit_list); |
269 | spin_lock_init(&crtc->commit_lock); | |
270 | ||
51fd371b | 271 | drm_modeset_lock_init(&crtc->mutex); |
2135ea7a | 272 | ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
6bfc56aa | 273 | if (ret) |
baf698b0 | 274 | return ret; |
f453ba04 | 275 | |
fa3ab4c2 | 276 | if (name) { |
fa3ab4c2 | 277 | crtc->name = kvasprintf(GFP_KERNEL, name, ap); |
fa3ab4c2 VS |
278 | } else { |
279 | crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", | |
280 | drm_num_crtcs(dev)); | |
281 | } | |
282 | if (!crtc->name) { | |
7c8f6d25 | 283 | drm_mode_object_unregister(dev, &crtc->base); |
fa3ab4c2 VS |
284 | return -ENOMEM; |
285 | } | |
286 | ||
6d6003c4 GP |
287 | crtc->fence_context = dma_fence_context_alloc(1); |
288 | spin_lock_init(&crtc->fence_lock); | |
289 | snprintf(crtc->timeline_name, sizeof(crtc->timeline_name), | |
290 | "CRTC:%d-%s", crtc->base.id, crtc->name); | |
291 | ||
bffd9de0 PZ |
292 | crtc->base.properties = &crtc->properties; |
293 | ||
51fd371b | 294 | list_add_tail(&crtc->head, &config->crtc_list); |
490d3d1b | 295 | crtc->index = config->num_crtc++; |
6bfc56aa | 296 | |
e13161af | 297 | crtc->primary = primary; |
fc1d3e44 | 298 | crtc->cursor = cursor; |
7abc7d47 | 299 | if (primary && !primary->possible_crtcs) |
6a52193b | 300 | primary->possible_crtcs = drm_crtc_mask(crtc); |
7abc7d47 | 301 | if (cursor && !cursor->possible_crtcs) |
6a52193b | 302 | cursor->possible_crtcs = drm_crtc_mask(crtc); |
e13161af | 303 | |
9edbf1fa TV |
304 | ret = drm_crtc_crc_init(crtc); |
305 | if (ret) { | |
306 | drm_mode_object_unregister(dev, &crtc->base); | |
307 | return ret; | |
308 | } | |
309 | ||
eab3bbef DV |
310 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
311 | drm_object_attach_property(&crtc->base, config->prop_active, 0); | |
955f3c33 | 312 | drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); |
beaf5af4 GP |
313 | drm_object_attach_property(&crtc->base, |
314 | config->prop_out_fence_ptr, 0); | |
1398958c NK |
315 | drm_object_attach_property(&crtc->base, |
316 | config->prop_vrr_enabled, 0); | |
eab3bbef DV |
317 | } |
318 | ||
baf698b0 | 319 | return 0; |
f453ba04 | 320 | } |
9dbb70fd PZ |
321 | |
322 | /** | |
323 | * drm_crtc_init_with_planes - Initialise a new CRTC object with | |
324 | * specified primary and cursor planes. | |
325 | * @dev: DRM device | |
326 | * @crtc: CRTC object to init | |
327 | * @primary: Primary plane for CRTC | |
328 | * @cursor: Cursor plane for CRTC | |
329 | * @funcs: callbacks for the new CRTC | |
330 | * @name: printf style format string for the CRTC name, or NULL for default name | |
331 | * | |
332 | * Inits a new object created as base part of a driver crtc object. Drivers | |
333 | * should use this function instead of drm_crtc_init(), which is only provided | |
334 | * for backwards compatibility with drivers which do not yet support universal | |
335 | * planes). For really simple hardware which has only 1 plane look at | |
336 | * drm_simple_display_pipe_init() instead. | |
337 | * The &drm_crtc_funcs.destroy hook should call drm_crtc_cleanup() and kfree() | |
338 | * the crtc structure. The crtc structure should not be allocated with | |
339 | * devm_kzalloc(). | |
340 | * | |
e240cc76 DV |
341 | * The @primary and @cursor planes are only relevant for legacy uAPI, see |
342 | * &drm_crtc.primary and &drm_crtc.cursor. | |
343 | * | |
9dbb70fd PZ |
344 | * Note: consider using drmm_crtc_alloc_with_planes() instead of |
345 | * drm_crtc_init_with_planes() to let the DRM managed resource infrastructure | |
346 | * take care of cleanup and deallocation. | |
347 | * | |
348 | * Returns: | |
349 | * Zero on success, error code on failure. | |
350 | */ | |
351 | int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, | |
352 | struct drm_plane *primary, | |
353 | struct drm_plane *cursor, | |
354 | const struct drm_crtc_funcs *funcs, | |
355 | const char *name, ...) | |
356 | { | |
357 | va_list ap; | |
358 | int ret; | |
359 | ||
360 | WARN_ON(!funcs->destroy); | |
361 | ||
362 | va_start(ap, name); | |
363 | ret = __drm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs, | |
364 | name, ap); | |
365 | va_end(ap); | |
366 | ||
367 | return ret; | |
368 | } | |
e13161af | 369 | EXPORT_SYMBOL(drm_crtc_init_with_planes); |
f453ba04 | 370 | |
9dbb70fd PZ |
371 | static void drmm_crtc_alloc_with_planes_cleanup(struct drm_device *dev, |
372 | void *ptr) | |
373 | { | |
374 | struct drm_crtc *crtc = ptr; | |
375 | ||
376 | drm_crtc_cleanup(crtc); | |
377 | } | |
378 | ||
379 | void *__drmm_crtc_alloc_with_planes(struct drm_device *dev, | |
380 | size_t size, size_t offset, | |
381 | struct drm_plane *primary, | |
382 | struct drm_plane *cursor, | |
383 | const struct drm_crtc_funcs *funcs, | |
384 | const char *name, ...) | |
385 | { | |
386 | void *container; | |
387 | struct drm_crtc *crtc; | |
388 | va_list ap; | |
389 | int ret; | |
390 | ||
391 | if (WARN_ON(!funcs || funcs->destroy)) | |
392 | return ERR_PTR(-EINVAL); | |
393 | ||
394 | container = drmm_kzalloc(dev, size, GFP_KERNEL); | |
395 | if (!container) | |
396 | return ERR_PTR(-ENOMEM); | |
397 | ||
398 | crtc = container + offset; | |
399 | ||
400 | va_start(ap, name); | |
401 | ret = __drm_crtc_init_with_planes(dev, crtc, primary, cursor, funcs, | |
402 | name, ap); | |
403 | va_end(ap); | |
404 | if (ret) | |
405 | return ERR_PTR(ret); | |
406 | ||
407 | ret = drmm_add_action_or_reset(dev, drmm_crtc_alloc_with_planes_cleanup, | |
408 | crtc); | |
409 | if (ret) | |
410 | return ERR_PTR(ret); | |
411 | ||
412 | return container; | |
413 | } | |
414 | EXPORT_SYMBOL(__drmm_crtc_alloc_with_planes); | |
415 | ||
f453ba04 | 416 | /** |
ad6f5c34 | 417 | * drm_crtc_cleanup - Clean up the core crtc usage |
f453ba04 DA |
418 | * @crtc: CRTC to cleanup |
419 | * | |
ad6f5c34 VS |
420 | * This function cleans up @crtc and removes it from the DRM mode setting |
421 | * core. Note that the function does *not* free the crtc structure itself, | |
422 | * this is the responsibility of the caller. | |
f453ba04 DA |
423 | */ |
424 | void drm_crtc_cleanup(struct drm_crtc *crtc) | |
425 | { | |
426 | struct drm_device *dev = crtc->dev; | |
427 | ||
490d3d1b CW |
428 | /* Note that the crtc_list is considered to be static; should we |
429 | * remove the drm_crtc at runtime we would have to decrement all | |
430 | * the indices on the drm_crtc after us in the crtc_list. | |
431 | */ | |
432 | ||
9edbf1fa TV |
433 | drm_crtc_crc_fini(crtc); |
434 | ||
9e1c156f SK |
435 | kfree(crtc->gamma_store); |
436 | crtc->gamma_store = NULL; | |
f453ba04 | 437 | |
51fd371b RC |
438 | drm_modeset_lock_fini(&crtc->mutex); |
439 | ||
7c8f6d25 | 440 | drm_mode_object_unregister(dev, &crtc->base); |
f453ba04 DA |
441 | list_del(&crtc->head); |
442 | dev->mode_config.num_crtc--; | |
3009c037 TR |
443 | |
444 | WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); | |
445 | if (crtc->state && crtc->funcs->atomic_destroy_state) | |
446 | crtc->funcs->atomic_destroy_state(crtc, crtc->state); | |
a18c0af1 | 447 | |
fa3ab4c2 VS |
448 | kfree(crtc->name); |
449 | ||
a18c0af1 | 450 | memset(crtc, 0, sizeof(*crtc)); |
f453ba04 DA |
451 | } |
452 | EXPORT_SYMBOL(drm_crtc_cleanup); | |
453 | ||
f453ba04 DA |
454 | /** |
455 | * drm_mode_getcrtc - get CRTC configuration | |
065a50ed DV |
456 | * @dev: drm device for the ioctl |
457 | * @data: data pointer for the ioctl | |
458 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 459 | * |
f453ba04 DA |
460 | * Construct a CRTC configuration structure to return to the user. |
461 | * | |
462 | * Called by the user via ioctl. | |
463 | * | |
c8e32cc1 | 464 | * Returns: |
1a498633 | 465 | * Zero on success, negative errno on failure. |
f453ba04 DA |
466 | */ |
467 | int drm_mode_getcrtc(struct drm_device *dev, | |
468 | void *data, struct drm_file *file_priv) | |
469 | { | |
470 | struct drm_mode_crtc *crtc_resp = data; | |
471 | struct drm_crtc *crtc; | |
64c32b49 | 472 | struct drm_plane *plane; |
f453ba04 | 473 | |
fb3b06c8 | 474 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
69fdf420 | 475 | return -EOPNOTSUPP; |
fb3b06c8 | 476 | |
418da172 | 477 | crtc = drm_crtc_find(dev, file_priv, crtc_resp->crtc_id); |
fcf93f69 DV |
478 | if (!crtc) |
479 | return -ENOENT; | |
f453ba04 | 480 | |
64c32b49 VS |
481 | plane = crtc->primary; |
482 | ||
f453ba04 | 483 | crtc_resp->gamma_size = crtc->gamma_size; |
de7b6be7 | 484 | |
64c32b49 VS |
485 | drm_modeset_lock(&plane->mutex, NULL); |
486 | if (plane->state && plane->state->fb) | |
487 | crtc_resp->fb_id = plane->state->fb->base.id; | |
488 | else if (!plane->state && plane->fb) | |
489 | crtc_resp->fb_id = plane->fb->base.id; | |
f453ba04 DA |
490 | else |
491 | crtc_resp->fb_id = 0; | |
492 | ||
64c32b49 VS |
493 | if (plane->state) { |
494 | crtc_resp->x = plane->state->src_x >> 16; | |
495 | crtc_resp->y = plane->state->src_y >> 16; | |
2c77bb29 | 496 | } |
64c32b49 | 497 | drm_modeset_unlock(&plane->mutex); |
2c77bb29 DV |
498 | |
499 | drm_modeset_lock(&crtc->mutex, NULL); | |
500 | if (crtc->state) { | |
31c946e8 | 501 | if (crtc->state->enable) { |
934a8a89 | 502 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); |
31c946e8 | 503 | crtc_resp->mode_valid = 1; |
31c946e8 DV |
504 | } else { |
505 | crtc_resp->mode_valid = 0; | |
506 | } | |
f453ba04 | 507 | } else { |
31c946e8 DV |
508 | crtc_resp->x = crtc->x; |
509 | crtc_resp->y = crtc->y; | |
bf2d5eb9 | 510 | |
31c946e8 | 511 | if (crtc->enabled) { |
934a8a89 | 512 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); |
31c946e8 DV |
513 | crtc_resp->mode_valid = 1; |
514 | ||
515 | } else { | |
516 | crtc_resp->mode_valid = 0; | |
517 | } | |
f453ba04 | 518 | } |
ace5bf0e AN |
519 | if (!file_priv->aspect_ratio_allowed) |
520 | crtc_resp->mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; | |
2c77bb29 | 521 | drm_modeset_unlock(&crtc->mutex); |
f453ba04 | 522 | |
baf698b0 | 523 | return 0; |
f453ba04 DA |
524 | } |
525 | ||
2ceb585a DV |
526 | static int __drm_mode_set_config_internal(struct drm_mode_set *set, |
527 | struct drm_modeset_acquire_ctx *ctx) | |
2d13b679 DV |
528 | { |
529 | struct drm_crtc *crtc = set->crtc; | |
5cef29aa DV |
530 | struct drm_framebuffer *fb; |
531 | struct drm_crtc *tmp; | |
b0d12325 DV |
532 | int ret; |
533 | ||
69a8a196 VS |
534 | WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); |
535 | ||
5cef29aa DV |
536 | /* |
537 | * NOTE: ->set_config can also disable other crtcs (if we steal all | |
538 | * connectors from it), hence we need to refcount the fbs across all | |
539 | * crtcs. Atomic modeset will have saner semantics ... | |
540 | */ | |
3ed70ecd VS |
541 | drm_for_each_crtc(tmp, crtc->dev) { |
542 | struct drm_plane *plane = tmp->primary; | |
543 | ||
544 | plane->old_fb = plane->fb; | |
545 | } | |
5cef29aa | 546 | |
b0d12325 | 547 | fb = set->fb; |
2d13b679 | 548 | |
a4eff9aa | 549 | ret = crtc->funcs->set_config(set, ctx); |
b0d12325 | 550 | if (ret == 0) { |
e00fb856 VS |
551 | struct drm_plane *plane = crtc->primary; |
552 | ||
69a8a196 VS |
553 | plane->crtc = fb ? crtc : NULL; |
554 | plane->fb = fb; | |
5cef29aa | 555 | } |
cc85e121 | 556 | |
e4f62546 | 557 | drm_for_each_crtc(tmp, crtc->dev) { |
3ed70ecd VS |
558 | struct drm_plane *plane = tmp->primary; |
559 | ||
560 | if (plane->fb) | |
561 | drm_framebuffer_get(plane->fb); | |
562 | if (plane->old_fb) | |
563 | drm_framebuffer_put(plane->old_fb); | |
564 | plane->old_fb = NULL; | |
b0d12325 DV |
565 | } |
566 | ||
567 | return ret; | |
2d13b679 | 568 | } |
69a8a196 | 569 | |
d49473a5 DV |
570 | /** |
571 | * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config | |
572 | * @set: modeset config to set | |
573 | * | |
574 | * This is a little helper to wrap internal calls to the | |
575 | * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is | |
576 | * correct refcounting dance. | |
577 | * | |
578 | * This should only be used by non-atomic legacy drivers. | |
579 | * | |
580 | * Returns: | |
581 | * Zero on success, negative errno on failure. | |
582 | */ | |
583 | int drm_mode_set_config_internal(struct drm_mode_set *set) | |
584 | { | |
585 | WARN_ON(drm_drv_uses_atomic_modeset(set->crtc->dev)); | |
586 | ||
2ceb585a | 587 | return __drm_mode_set_config_internal(set, NULL); |
d49473a5 | 588 | } |
2d13b679 DV |
589 | EXPORT_SYMBOL(drm_mode_set_config_internal); |
590 | ||
af93629d MR |
591 | /** |
592 | * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the | |
593 | * CRTC viewport | |
594 | * @crtc: CRTC that framebuffer will be displayed on | |
595 | * @x: x panning | |
596 | * @y: y panning | |
597 | * @mode: mode that framebuffer will be displayed under | |
598 | * @fb: framebuffer to check size of | |
c11e9283 | 599 | */ |
af93629d MR |
600 | int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
601 | int x, int y, | |
602 | const struct drm_display_mode *mode, | |
603 | const struct drm_framebuffer *fb) | |
c11e9283 DL |
604 | |
605 | { | |
606 | int hdisplay, vdisplay; | |
607 | ||
196cd5d3 | 608 | drm_mode_get_hv_timing(mode, &hdisplay, &vdisplay); |
a0c1bbb0 | 609 | |
33e0be63 | 610 | if (crtc->state && |
bd2ef25d | 611 | drm_rotation_90_or_270(crtc->primary->state->rotation)) |
c11e9283 DL |
612 | swap(hdisplay, vdisplay); |
613 | ||
43968d7b DV |
614 | return drm_framebuffer_check_src_coords(x << 16, y << 16, |
615 | hdisplay << 16, vdisplay << 16, | |
616 | fb); | |
c11e9283 | 617 | } |
af93629d | 618 | EXPORT_SYMBOL(drm_crtc_check_viewport); |
c11e9283 | 619 | |
f453ba04 DA |
620 | /** |
621 | * drm_mode_setcrtc - set CRTC configuration | |
065a50ed DV |
622 | * @dev: drm device for the ioctl |
623 | * @data: data pointer for the ioctl | |
624 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 625 | * |
f453ba04 DA |
626 | * Build a new CRTC configuration based on user request. |
627 | * | |
628 | * Called by the user via ioctl. | |
629 | * | |
c8e32cc1 | 630 | * Returns: |
1a498633 | 631 | * Zero on success, negative errno on failure. |
f453ba04 DA |
632 | */ |
633 | int drm_mode_setcrtc(struct drm_device *dev, void *data, | |
634 | struct drm_file *file_priv) | |
635 | { | |
636 | struct drm_mode_config *config = &dev->mode_config; | |
637 | struct drm_mode_crtc *crtc_req = data; | |
6653cc8d | 638 | struct drm_crtc *crtc; |
64c32b49 | 639 | struct drm_plane *plane; |
c232e9f4 SP |
640 | struct drm_connector **connector_set = NULL, *connector; |
641 | struct drm_framebuffer *fb = NULL; | |
642 | struct drm_display_mode *mode = NULL; | |
f453ba04 DA |
643 | struct drm_mode_set set; |
644 | uint32_t __user *set_connectors_ptr; | |
2ceb585a | 645 | struct drm_modeset_acquire_ctx ctx; |
4a1b0714 | 646 | int ret; |
f453ba04 DA |
647 | int i; |
648 | ||
fb3b06c8 | 649 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
69fdf420 | 650 | return -EOPNOTSUPP; |
fb3b06c8 | 651 | |
01447e9f ZJ |
652 | /* |
653 | * Universal plane src offsets are only 16.16, prevent havoc for | |
654 | * drivers using universal plane code internally. | |
655 | */ | |
656 | if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) | |
1d97e915 VS |
657 | return -ERANGE; |
658 | ||
418da172 | 659 | crtc = drm_crtc_find(dev, file_priv, crtc_req->crtc_id); |
a2b34e22 | 660 | if (!crtc) { |
58367ed6 | 661 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); |
2ceb585a | 662 | return -ENOENT; |
f453ba04 | 663 | } |
fa3ab4c2 | 664 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
f453ba04 | 665 | |
64c32b49 VS |
666 | plane = crtc->primary; |
667 | ||
204f640d DV |
668 | /* allow disabling with the primary plane leased */ |
669 | if (crtc_req->mode_valid && !drm_lease_held(file_priv, plane->base.id)) | |
670 | return -EACCES; | |
671 | ||
b7ea04d2 SP |
672 | DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, |
673 | DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret); | |
bf2d5eb9 | 674 | |
f453ba04 DA |
675 | if (crtc_req->mode_valid) { |
676 | /* If we have a mode we need a framebuffer. */ | |
677 | /* If we pass -1, set the mode with the currently bound fb */ | |
678 | if (crtc_req->fb_id == -1) { | |
a36c027d VS |
679 | struct drm_framebuffer *old_fb; |
680 | ||
681 | if (plane->state) | |
682 | old_fb = plane->state->fb; | |
683 | else | |
684 | old_fb = plane->fb; | |
685 | ||
686 | if (!old_fb) { | |
6653cc8d VS |
687 | DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); |
688 | ret = -EINVAL; | |
689 | goto out; | |
f453ba04 | 690 | } |
bf2d5eb9 | 691 | |
a36c027d | 692 | fb = old_fb; |
b0d12325 | 693 | /* Make refcounting symmetric with the lookup path. */ |
a4a69da0 | 694 | drm_framebuffer_get(fb); |
f453ba04 | 695 | } else { |
418da172 | 696 | fb = drm_framebuffer_lookup(dev, file_priv, crtc_req->fb_id); |
786b99ed | 697 | if (!fb) { |
58367ed6 ZY |
698 | DRM_DEBUG_KMS("Unknown FB ID%d\n", |
699 | crtc_req->fb_id); | |
37c4e705 | 700 | ret = -ENOENT; |
f453ba04 DA |
701 | goto out; |
702 | } | |
f453ba04 DA |
703 | } |
704 | ||
705 | mode = drm_mode_create(dev); | |
ee34ab5b VS |
706 | if (!mode) { |
707 | ret = -ENOMEM; | |
708 | goto out; | |
709 | } | |
ace5bf0e AN |
710 | if (!file_priv->aspect_ratio_allowed && |
711 | (crtc_req->mode.flags & DRM_MODE_FLAG_PIC_AR_MASK) != DRM_MODE_FLAG_PIC_AR_NONE) { | |
712 | DRM_DEBUG_KMS("Unexpected aspect-ratio flag bits\n"); | |
713 | ret = -EINVAL; | |
714 | goto out; | |
715 | } | |
716 | ||
ee34ab5b | 717 | |
75a655e0 | 718 | ret = drm_mode_convert_umode(dev, mode, &crtc_req->mode); |
90367bf6 | 719 | if (ret) { |
6ab0edf4 VS |
720 | DRM_DEBUG_KMS("Invalid mode (ret=%d, status=%s)\n", |
721 | ret, drm_get_mode_status_name(mode->status)); | |
722 | drm_mode_debug_printmodeline(mode); | |
90367bf6 VS |
723 | goto out; |
724 | } | |
725 | ||
7eb5f302 LP |
726 | /* |
727 | * Check whether the primary plane supports the fb pixel format. | |
728 | * Drivers not implementing the universal planes API use a | |
729 | * default formats list provided by the DRM core which doesn't | |
730 | * match real hardware capabilities. Skip the check in that | |
731 | * case. | |
732 | */ | |
64c32b49 VS |
733 | if (!plane->format_default) { |
734 | ret = drm_plane_check_pixel_format(plane, | |
23163a7d VS |
735 | fb->format->format, |
736 | fb->modifier); | |
7eb5f302 | 737 | if (ret) { |
92f1d09c SA |
738 | DRM_DEBUG_KMS("Invalid pixel format %p4cc, modifier 0x%llx\n", |
739 | &fb->format->format, | |
23163a7d | 740 | fb->modifier); |
7eb5f302 LP |
741 | goto out; |
742 | } | |
743 | } | |
744 | ||
c11e9283 DL |
745 | ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
746 | mode, fb); | |
747 | if (ret) | |
5f61bb42 | 748 | goto out; |
c11e9283 | 749 | |
f453ba04 DA |
750 | } |
751 | ||
752 | if (crtc_req->count_connectors == 0 && mode) { | |
58367ed6 | 753 | DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); |
f453ba04 DA |
754 | ret = -EINVAL; |
755 | goto out; | |
756 | } | |
757 | ||
7781de74 | 758 | if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
58367ed6 | 759 | DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", |
f453ba04 DA |
760 | crtc_req->count_connectors); |
761 | ret = -EINVAL; | |
762 | goto out; | |
763 | } | |
764 | ||
765 | if (crtc_req->count_connectors > 0) { | |
766 | u32 out_id; | |
767 | ||
768 | /* Avoid unbounded kernel memory allocation */ | |
769 | if (crtc_req->count_connectors > config->num_connector) { | |
770 | ret = -EINVAL; | |
771 | goto out; | |
772 | } | |
773 | ||
2f6c5389 TR |
774 | connector_set = kmalloc_array(crtc_req->count_connectors, |
775 | sizeof(struct drm_connector *), | |
776 | GFP_KERNEL); | |
f453ba04 DA |
777 | if (!connector_set) { |
778 | ret = -ENOMEM; | |
779 | goto out; | |
780 | } | |
781 | ||
782 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
b164d31f | 783 | connector_set[i] = NULL; |
81f6c7f8 | 784 | set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
f453ba04 DA |
785 | if (get_user(out_id, &set_connectors_ptr[i])) { |
786 | ret = -EFAULT; | |
787 | goto out; | |
788 | } | |
789 | ||
418da172 | 790 | connector = drm_connector_lookup(dev, file_priv, out_id); |
a2b34e22 | 791 | if (!connector) { |
58367ed6 ZY |
792 | DRM_DEBUG_KMS("Connector id %d unknown\n", |
793 | out_id); | |
f27657f2 | 794 | ret = -ENOENT; |
f453ba04 DA |
795 | goto out; |
796 | } | |
9440106b JG |
797 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
798 | connector->base.id, | |
25933820 | 799 | connector->name); |
f453ba04 DA |
800 | |
801 | connector_set[i] = connector; | |
802 | } | |
803 | } | |
804 | ||
805 | set.crtc = crtc; | |
806 | set.x = crtc_req->x; | |
807 | set.y = crtc_req->y; | |
808 | set.mode = mode; | |
809 | set.connectors = connector_set; | |
810 | set.num_connectors = crtc_req->count_connectors; | |
5ef5f72f | 811 | set.fb = fb; |
69a8a196 VS |
812 | |
813 | if (drm_drv_uses_atomic_modeset(dev)) | |
814 | ret = crtc->funcs->set_config(&set, &ctx); | |
815 | else | |
816 | ret = __drm_mode_set_config_internal(&set, &ctx); | |
f453ba04 DA |
817 | |
818 | out: | |
b0d12325 | 819 | if (fb) |
a4a69da0 | 820 | drm_framebuffer_put(fb); |
b0d12325 | 821 | |
b164d31f DA |
822 | if (connector_set) { |
823 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
824 | if (connector_set[i]) | |
ad093607 | 825 | drm_connector_put(connector_set[i]); |
b164d31f DA |
826 | } |
827 | } | |
f453ba04 | 828 | kfree(connector_set); |
ee34ab5b | 829 | drm_mode_destroy(dev, mode); |
c232e9f4 SP |
830 | |
831 | /* In case we need to retry... */ | |
832 | connector_set = NULL; | |
833 | fb = NULL; | |
834 | mode = NULL; | |
835 | ||
77ef3857 | 836 | DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); |
2ceb585a | 837 | |
f453ba04 DA |
838 | return ret; |
839 | } | |
840 | ||
949619f3 DV |
841 | int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, |
842 | struct drm_property *property, | |
843 | uint64_t value) | |
4a67d391 | 844 | { |
bffd9de0 PZ |
845 | int ret = -EINVAL; |
846 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
4a67d391 | 847 | |
bffd9de0 PZ |
848 | if (crtc->funcs->set_property) |
849 | ret = crtc->funcs->set_property(crtc, property, value); | |
144a7999 | 850 | if (!ret) |
bffd9de0 | 851 | drm_object_property_set_value(obj, property, value); |
4a67d391 | 852 | |
bffd9de0 | 853 | return ret; |
4a67d391 | 854 | } |
5c759eda PB |
855 | |
856 | /** | |
857 | * drm_crtc_create_scaling_filter_property - create a new scaling filter | |
858 | * property | |
859 | * | |
860 | * @crtc: drm CRTC | |
861 | * @supported_filters: bitmask of supported scaling filters, must include | |
862 | * BIT(DRM_SCALING_FILTER_DEFAULT). | |
863 | * | |
864 | * This function lets driver to enable the scaling filter property on a given | |
865 | * CRTC. | |
866 | * | |
867 | * RETURNS: | |
868 | * Zero for success or -errno | |
869 | */ | |
870 | int drm_crtc_create_scaling_filter_property(struct drm_crtc *crtc, | |
871 | unsigned int supported_filters) | |
872 | { | |
873 | struct drm_property *prop = | |
874 | drm_create_scaling_filter_prop(crtc->dev, supported_filters); | |
875 | ||
876 | if (IS_ERR(prop)) | |
877 | return PTR_ERR(prop); | |
878 | ||
879 | drm_object_attach_property(&crtc->base, prop, | |
880 | DRM_SCALING_FILTER_DEFAULT); | |
881 | crtc->scaling_filter_property = prop; | |
882 | ||
883 | return 0; | |
884 | } | |
885 | EXPORT_SYMBOL(drm_crtc_create_scaling_filter_property); |