]>
Commit | Line | Data |
---|---|---|
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> | |
51fd371b | 41 | #include <drm/drm_modeset_lock.h> |
88a48e29 | 42 | #include <drm/drm_atomic.h> |
3b96a0b1 | 43 | #include <drm/drm_auth.h> |
9edbf1fa | 44 | #include <drm/drm_debugfs_crc.h> |
e6120d64 DV |
45 | #include <drm/drm_drv.h> |
46 | #include <drm/drm_print.h> | |
47 | #include <drm/drm_file.h> | |
f453ba04 | 48 | |
8bd441b2 | 49 | #include "drm_crtc_internal.h" |
67d0ec4e | 50 | #include "drm_internal.h" |
8bd441b2 | 51 | |
d5d487eb DV |
52 | /** |
53 | * DOC: overview | |
54 | * | |
55 | * A CRTC represents the overall display pipeline. It receives pixel data from | |
56 | * &drm_plane and blends them together. The &drm_display_mode is also attached | |
57 | * to the CRTC, specifying display timings. On the output side the data is fed | |
58 | * to one or more &drm_encoder, which are then each connected to one | |
59 | * &drm_connector. | |
60 | * | |
61 | * To create a CRTC, a KMS drivers allocates and zeroes an instances of | |
62 | * &struct drm_crtc (possibly as part of a larger structure) and registers it | |
63 | * with a call to drm_crtc_init_with_planes(). | |
64 | * | |
65 | * The CRTC is also the entry point for legacy modeset operations, see | |
66 | * &drm_crtc_funcs.set_config, legacy plane operations, see | |
67 | * &drm_crtc_funcs.page_flip and &drm_crtc_funcs.cursor_set2, and other legacy | |
68 | * operations like &drm_crtc_funcs.gamma_set. For atomic drivers all these | |
69 | * features are controlled through &drm_property and | |
70 | * &drm_mode_config_funcs.atomic_check and &drm_mode_config_funcs.atomic_check. | |
71 | */ | |
72 | ||
6d1b81d8 SG |
73 | /** |
74 | * drm_crtc_from_index - find the registered CRTC at an index | |
75 | * @dev: DRM device | |
76 | * @idx: index of registered CRTC to find for | |
77 | * | |
78 | * Given a CRTC index, return the registered CRTC from DRM device's | |
931c670d SG |
79 | * list of CRTCs with matching index. This is the inverse of drm_crtc_index(). |
80 | * It's useful in the vblank callbacks (like &drm_driver.enable_vblank or | |
81 | * &drm_driver.disable_vblank), since that still deals with indices instead | |
82 | * of pointers to &struct drm_crtc." | |
6d1b81d8 SG |
83 | */ |
84 | struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx) | |
85 | { | |
86 | struct drm_crtc *crtc; | |
87 | ||
88 | drm_for_each_crtc(crtc, dev) | |
89 | if (idx == crtc->index) | |
90 | return crtc; | |
91 | ||
92 | return NULL; | |
93 | } | |
94 | EXPORT_SYMBOL(drm_crtc_from_index); | |
95 | ||
6a0d9528 LW |
96 | /** |
97 | * drm_crtc_force_disable - Forcibly turn off a CRTC | |
98 | * @crtc: CRTC to turn off | |
99 | * | |
18dddadc DV |
100 | * Note: This should only be used by non-atomic legacy drivers. |
101 | * | |
6a0d9528 LW |
102 | * Returns: |
103 | * Zero on success, error code on failure. | |
104 | */ | |
105 | int drm_crtc_force_disable(struct drm_crtc *crtc) | |
106 | { | |
107 | struct drm_mode_set set = { | |
108 | .crtc = crtc, | |
109 | }; | |
110 | ||
18dddadc DV |
111 | WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); |
112 | ||
6a0d9528 LW |
113 | return drm_mode_set_config_internal(&set); |
114 | } | |
115 | EXPORT_SYMBOL(drm_crtc_force_disable); | |
116 | ||
117 | /** | |
118 | * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs | |
119 | * @dev: DRM device whose CRTCs to turn off | |
120 | * | |
121 | * Drivers may want to call this on unload to ensure that all displays are | |
122 | * unlit and the GPU is in a consistent, low power state. Takes modeset locks. | |
123 | * | |
18dddadc DV |
124 | * Note: This should only be used by non-atomic legacy drivers. For an atomic |
125 | * version look at drm_atomic_helper_shutdown(). | |
126 | * | |
6a0d9528 LW |
127 | * Returns: |
128 | * Zero on success, error code on failure. | |
129 | */ | |
130 | int drm_crtc_force_disable_all(struct drm_device *dev) | |
131 | { | |
132 | struct drm_crtc *crtc; | |
133 | int ret = 0; | |
134 | ||
135 | drm_modeset_lock_all(dev); | |
136 | drm_for_each_crtc(crtc, dev) | |
137 | if (crtc->enabled) { | |
138 | ret = drm_crtc_force_disable(crtc); | |
139 | if (ret) | |
140 | goto out; | |
141 | } | |
142 | out: | |
143 | drm_modeset_unlock_all(dev); | |
144 | return ret; | |
145 | } | |
146 | EXPORT_SYMBOL(drm_crtc_force_disable_all); | |
147 | ||
fa3ab4c2 VS |
148 | static unsigned int drm_num_crtcs(struct drm_device *dev) |
149 | { | |
150 | unsigned int num = 0; | |
151 | struct drm_crtc *tmp; | |
152 | ||
153 | drm_for_each_crtc(tmp, dev) { | |
154 | num++; | |
155 | } | |
156 | ||
157 | return num; | |
158 | } | |
159 | ||
28575f16 | 160 | int drm_crtc_register_all(struct drm_device *dev) |
79190ea2 BG |
161 | { |
162 | struct drm_crtc *crtc; | |
163 | int ret = 0; | |
164 | ||
165 | drm_for_each_crtc(crtc, dev) { | |
9edbf1fa TV |
166 | if (drm_debugfs_crtc_add(crtc)) |
167 | DRM_ERROR("Failed to initialize debugfs entry for CRTC '%s'.\n", | |
168 | crtc->name); | |
169 | ||
79190ea2 BG |
170 | if (crtc->funcs->late_register) |
171 | ret = crtc->funcs->late_register(crtc); | |
172 | if (ret) | |
173 | return ret; | |
174 | } | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
28575f16 | 179 | void drm_crtc_unregister_all(struct drm_device *dev) |
79190ea2 BG |
180 | { |
181 | struct drm_crtc *crtc; | |
182 | ||
183 | drm_for_each_crtc(crtc, dev) { | |
184 | if (crtc->funcs->early_unregister) | |
185 | crtc->funcs->early_unregister(crtc); | |
9edbf1fa | 186 | drm_debugfs_crtc_remove(crtc); |
79190ea2 BG |
187 | } |
188 | } | |
189 | ||
9edbf1fa TV |
190 | static int drm_crtc_crc_init(struct drm_crtc *crtc) |
191 | { | |
192 | #ifdef CONFIG_DEBUG_FS | |
193 | spin_lock_init(&crtc->crc.lock); | |
194 | init_waitqueue_head(&crtc->crc.wq); | |
195 | crtc->crc.source = kstrdup("auto", GFP_KERNEL); | |
196 | if (!crtc->crc.source) | |
197 | return -ENOMEM; | |
198 | #endif | |
199 | return 0; | |
200 | } | |
201 | ||
202 | static void drm_crtc_crc_fini(struct drm_crtc *crtc) | |
203 | { | |
204 | #ifdef CONFIG_DEBUG_FS | |
205 | kfree(crtc->crc.source); | |
206 | #endif | |
207 | } | |
208 | ||
35f8cc3b GP |
209 | static const struct dma_fence_ops drm_crtc_fence_ops; |
210 | ||
6d6003c4 GP |
211 | static struct drm_crtc *fence_to_crtc(struct dma_fence *fence) |
212 | { | |
213 | BUG_ON(fence->ops != &drm_crtc_fence_ops); | |
214 | return container_of(fence->lock, struct drm_crtc, fence_lock); | |
215 | } | |
216 | ||
217 | static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence) | |
218 | { | |
219 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
220 | ||
221 | return crtc->dev->driver->name; | |
222 | } | |
223 | ||
224 | static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence) | |
225 | { | |
226 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
227 | ||
228 | return crtc->timeline_name; | |
229 | } | |
230 | ||
35f8cc3b | 231 | static const struct dma_fence_ops drm_crtc_fence_ops = { |
6d6003c4 GP |
232 | .get_driver_name = drm_crtc_fence_get_driver_name, |
233 | .get_timeline_name = drm_crtc_fence_get_timeline_name, | |
6d6003c4 GP |
234 | }; |
235 | ||
35f8cc3b GP |
236 | struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc) |
237 | { | |
238 | struct dma_fence *fence; | |
239 | ||
240 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); | |
241 | if (!fence) | |
242 | return NULL; | |
243 | ||
244 | dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock, | |
245 | crtc->fence_context, ++crtc->fence_seqno); | |
246 | ||
247 | return fence; | |
248 | } | |
249 | ||
f453ba04 | 250 | /** |
e13161af MR |
251 | * drm_crtc_init_with_planes - Initialise a new CRTC object with |
252 | * specified primary and cursor planes. | |
f453ba04 DA |
253 | * @dev: DRM device |
254 | * @crtc: CRTC object to init | |
e13161af MR |
255 | * @primary: Primary plane for CRTC |
256 | * @cursor: Cursor plane for CRTC | |
f453ba04 | 257 | * @funcs: callbacks for the new CRTC |
f9882876 | 258 | * @name: printf style format string for the CRTC name, or NULL for default name |
f453ba04 | 259 | * |
532b3671 DV |
260 | * Inits a new object created as base part of a driver crtc object. Drivers |
261 | * should use this function instead of drm_crtc_init(), which is only provided | |
262 | * for backwards compatibility with drivers which do not yet support universal | |
263 | * planes). For really simple hardware which has only 1 plane look at | |
264 | * drm_simple_display_pipe_init() instead. | |
6bfc56aa | 265 | * |
c8e32cc1 | 266 | * Returns: |
6bfc56aa | 267 | * Zero on success, error code on failure. |
f453ba04 | 268 | */ |
e13161af MR |
269 | int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, |
270 | struct drm_plane *primary, | |
fc1d3e44 | 271 | struct drm_plane *cursor, |
f9882876 VS |
272 | const struct drm_crtc_funcs *funcs, |
273 | const char *name, ...) | |
f453ba04 | 274 | { |
51fd371b | 275 | struct drm_mode_config *config = &dev->mode_config; |
6bfc56aa VS |
276 | int ret; |
277 | ||
522cf91f BG |
278 | WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); |
279 | WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); | |
280 | ||
2a8d3eac VS |
281 | /* crtc index is used with 32bit bitmasks */ |
282 | if (WARN_ON(config->num_crtc >= 32)) | |
283 | return -EINVAL; | |
284 | ||
ba1f665f HM |
285 | WARN_ON(drm_drv_uses_atomic_modeset(dev) && |
286 | (!funcs->atomic_destroy_state || | |
287 | !funcs->atomic_duplicate_state)); | |
288 | ||
f453ba04 DA |
289 | crtc->dev = dev; |
290 | crtc->funcs = funcs; | |
291 | ||
3b24f7d6 DV |
292 | INIT_LIST_HEAD(&crtc->commit_list); |
293 | spin_lock_init(&crtc->commit_lock); | |
294 | ||
51fd371b | 295 | drm_modeset_lock_init(&crtc->mutex); |
2135ea7a | 296 | ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
6bfc56aa | 297 | if (ret) |
baf698b0 | 298 | return ret; |
f453ba04 | 299 | |
fa3ab4c2 VS |
300 | if (name) { |
301 | va_list ap; | |
302 | ||
303 | va_start(ap, name); | |
304 | crtc->name = kvasprintf(GFP_KERNEL, name, ap); | |
305 | va_end(ap); | |
306 | } else { | |
307 | crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", | |
308 | drm_num_crtcs(dev)); | |
309 | } | |
310 | if (!crtc->name) { | |
7c8f6d25 | 311 | drm_mode_object_unregister(dev, &crtc->base); |
fa3ab4c2 VS |
312 | return -ENOMEM; |
313 | } | |
314 | ||
6d6003c4 GP |
315 | crtc->fence_context = dma_fence_context_alloc(1); |
316 | spin_lock_init(&crtc->fence_lock); | |
317 | snprintf(crtc->timeline_name, sizeof(crtc->timeline_name), | |
318 | "CRTC:%d-%s", crtc->base.id, crtc->name); | |
319 | ||
bffd9de0 PZ |
320 | crtc->base.properties = &crtc->properties; |
321 | ||
51fd371b | 322 | list_add_tail(&crtc->head, &config->crtc_list); |
490d3d1b | 323 | crtc->index = config->num_crtc++; |
6bfc56aa | 324 | |
e13161af | 325 | crtc->primary = primary; |
fc1d3e44 | 326 | crtc->cursor = cursor; |
7abc7d47 | 327 | if (primary && !primary->possible_crtcs) |
6a52193b | 328 | primary->possible_crtcs = drm_crtc_mask(crtc); |
7abc7d47 | 329 | if (cursor && !cursor->possible_crtcs) |
6a52193b | 330 | cursor->possible_crtcs = drm_crtc_mask(crtc); |
e13161af | 331 | |
9edbf1fa TV |
332 | ret = drm_crtc_crc_init(crtc); |
333 | if (ret) { | |
334 | drm_mode_object_unregister(dev, &crtc->base); | |
335 | return ret; | |
336 | } | |
337 | ||
eab3bbef DV |
338 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
339 | drm_object_attach_property(&crtc->base, config->prop_active, 0); | |
955f3c33 | 340 | drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); |
beaf5af4 GP |
341 | drm_object_attach_property(&crtc->base, |
342 | config->prop_out_fence_ptr, 0); | |
eab3bbef DV |
343 | } |
344 | ||
baf698b0 | 345 | return 0; |
f453ba04 | 346 | } |
e13161af | 347 | EXPORT_SYMBOL(drm_crtc_init_with_planes); |
f453ba04 DA |
348 | |
349 | /** | |
ad6f5c34 | 350 | * drm_crtc_cleanup - Clean up the core crtc usage |
f453ba04 DA |
351 | * @crtc: CRTC to cleanup |
352 | * | |
ad6f5c34 VS |
353 | * This function cleans up @crtc and removes it from the DRM mode setting |
354 | * core. Note that the function does *not* free the crtc structure itself, | |
355 | * this is the responsibility of the caller. | |
f453ba04 DA |
356 | */ |
357 | void drm_crtc_cleanup(struct drm_crtc *crtc) | |
358 | { | |
359 | struct drm_device *dev = crtc->dev; | |
360 | ||
490d3d1b CW |
361 | /* Note that the crtc_list is considered to be static; should we |
362 | * remove the drm_crtc at runtime we would have to decrement all | |
363 | * the indices on the drm_crtc after us in the crtc_list. | |
364 | */ | |
365 | ||
9edbf1fa TV |
366 | drm_crtc_crc_fini(crtc); |
367 | ||
9e1c156f SK |
368 | kfree(crtc->gamma_store); |
369 | crtc->gamma_store = NULL; | |
f453ba04 | 370 | |
51fd371b RC |
371 | drm_modeset_lock_fini(&crtc->mutex); |
372 | ||
7c8f6d25 | 373 | drm_mode_object_unregister(dev, &crtc->base); |
f453ba04 DA |
374 | list_del(&crtc->head); |
375 | dev->mode_config.num_crtc--; | |
3009c037 TR |
376 | |
377 | WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); | |
378 | if (crtc->state && crtc->funcs->atomic_destroy_state) | |
379 | crtc->funcs->atomic_destroy_state(crtc, crtc->state); | |
a18c0af1 | 380 | |
fa3ab4c2 VS |
381 | kfree(crtc->name); |
382 | ||
a18c0af1 | 383 | memset(crtc, 0, sizeof(*crtc)); |
f453ba04 DA |
384 | } |
385 | EXPORT_SYMBOL(drm_crtc_cleanup); | |
386 | ||
f453ba04 DA |
387 | /** |
388 | * drm_mode_getcrtc - get CRTC configuration | |
065a50ed DV |
389 | * @dev: drm device for the ioctl |
390 | * @data: data pointer for the ioctl | |
391 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 392 | * |
f453ba04 DA |
393 | * Construct a CRTC configuration structure to return to the user. |
394 | * | |
395 | * Called by the user via ioctl. | |
396 | * | |
c8e32cc1 | 397 | * Returns: |
1a498633 | 398 | * Zero on success, negative errno on failure. |
f453ba04 DA |
399 | */ |
400 | int drm_mode_getcrtc(struct drm_device *dev, | |
401 | void *data, struct drm_file *file_priv) | |
402 | { | |
403 | struct drm_mode_crtc *crtc_resp = data; | |
404 | struct drm_crtc *crtc; | |
64c32b49 | 405 | struct drm_plane *plane; |
f453ba04 | 406 | |
fb3b06c8 DA |
407 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
408 | return -EINVAL; | |
409 | ||
418da172 | 410 | crtc = drm_crtc_find(dev, file_priv, crtc_resp->crtc_id); |
fcf93f69 DV |
411 | if (!crtc) |
412 | return -ENOENT; | |
f453ba04 | 413 | |
64c32b49 VS |
414 | plane = crtc->primary; |
415 | ||
f453ba04 | 416 | crtc_resp->gamma_size = crtc->gamma_size; |
de7b6be7 | 417 | |
64c32b49 VS |
418 | drm_modeset_lock(&plane->mutex, NULL); |
419 | if (plane->state && plane->state->fb) | |
420 | crtc_resp->fb_id = plane->state->fb->base.id; | |
421 | else if (!plane->state && plane->fb) | |
422 | crtc_resp->fb_id = plane->fb->base.id; | |
f453ba04 DA |
423 | else |
424 | crtc_resp->fb_id = 0; | |
425 | ||
64c32b49 VS |
426 | if (plane->state) { |
427 | crtc_resp->x = plane->state->src_x >> 16; | |
428 | crtc_resp->y = plane->state->src_y >> 16; | |
2c77bb29 | 429 | } |
64c32b49 | 430 | drm_modeset_unlock(&plane->mutex); |
2c77bb29 DV |
431 | |
432 | drm_modeset_lock(&crtc->mutex, NULL); | |
433 | if (crtc->state) { | |
31c946e8 | 434 | if (crtc->state->enable) { |
934a8a89 | 435 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); |
31c946e8 | 436 | crtc_resp->mode_valid = 1; |
31c946e8 DV |
437 | } else { |
438 | crtc_resp->mode_valid = 0; | |
439 | } | |
f453ba04 | 440 | } else { |
31c946e8 DV |
441 | crtc_resp->x = crtc->x; |
442 | crtc_resp->y = crtc->y; | |
bf2d5eb9 | 443 | |
31c946e8 | 444 | if (crtc->enabled) { |
934a8a89 | 445 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); |
31c946e8 DV |
446 | crtc_resp->mode_valid = 1; |
447 | ||
448 | } else { | |
449 | crtc_resp->mode_valid = 0; | |
450 | } | |
f453ba04 | 451 | } |
ace5bf0e AN |
452 | if (!file_priv->aspect_ratio_allowed) |
453 | crtc_resp->mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; | |
2c77bb29 | 454 | drm_modeset_unlock(&crtc->mutex); |
f453ba04 | 455 | |
baf698b0 | 456 | return 0; |
f453ba04 DA |
457 | } |
458 | ||
2ceb585a DV |
459 | static int __drm_mode_set_config_internal(struct drm_mode_set *set, |
460 | struct drm_modeset_acquire_ctx *ctx) | |
2d13b679 DV |
461 | { |
462 | struct drm_crtc *crtc = set->crtc; | |
5cef29aa DV |
463 | struct drm_framebuffer *fb; |
464 | struct drm_crtc *tmp; | |
b0d12325 DV |
465 | int ret; |
466 | ||
69a8a196 VS |
467 | WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); |
468 | ||
5cef29aa DV |
469 | /* |
470 | * NOTE: ->set_config can also disable other crtcs (if we steal all | |
471 | * connectors from it), hence we need to refcount the fbs across all | |
472 | * crtcs. Atomic modeset will have saner semantics ... | |
473 | */ | |
3ed70ecd VS |
474 | drm_for_each_crtc(tmp, crtc->dev) { |
475 | struct drm_plane *plane = tmp->primary; | |
476 | ||
477 | plane->old_fb = plane->fb; | |
478 | } | |
5cef29aa | 479 | |
b0d12325 | 480 | fb = set->fb; |
2d13b679 | 481 | |
a4eff9aa | 482 | ret = crtc->funcs->set_config(set, ctx); |
b0d12325 | 483 | if (ret == 0) { |
e00fb856 VS |
484 | struct drm_plane *plane = crtc->primary; |
485 | ||
69a8a196 VS |
486 | plane->crtc = fb ? crtc : NULL; |
487 | plane->fb = fb; | |
5cef29aa | 488 | } |
cc85e121 | 489 | |
e4f62546 | 490 | drm_for_each_crtc(tmp, crtc->dev) { |
3ed70ecd VS |
491 | struct drm_plane *plane = tmp->primary; |
492 | ||
493 | if (plane->fb) | |
494 | drm_framebuffer_get(plane->fb); | |
495 | if (plane->old_fb) | |
496 | drm_framebuffer_put(plane->old_fb); | |
497 | plane->old_fb = NULL; | |
b0d12325 DV |
498 | } |
499 | ||
500 | return ret; | |
2d13b679 | 501 | } |
69a8a196 | 502 | |
d49473a5 DV |
503 | /** |
504 | * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config | |
505 | * @set: modeset config to set | |
506 | * | |
507 | * This is a little helper to wrap internal calls to the | |
508 | * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is | |
509 | * correct refcounting dance. | |
510 | * | |
511 | * This should only be used by non-atomic legacy drivers. | |
512 | * | |
513 | * Returns: | |
514 | * Zero on success, negative errno on failure. | |
515 | */ | |
516 | int drm_mode_set_config_internal(struct drm_mode_set *set) | |
517 | { | |
518 | WARN_ON(drm_drv_uses_atomic_modeset(set->crtc->dev)); | |
519 | ||
2ceb585a | 520 | return __drm_mode_set_config_internal(set, NULL); |
d49473a5 | 521 | } |
2d13b679 DV |
522 | EXPORT_SYMBOL(drm_mode_set_config_internal); |
523 | ||
af93629d MR |
524 | /** |
525 | * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the | |
526 | * CRTC viewport | |
527 | * @crtc: CRTC that framebuffer will be displayed on | |
528 | * @x: x panning | |
529 | * @y: y panning | |
530 | * @mode: mode that framebuffer will be displayed under | |
531 | * @fb: framebuffer to check size of | |
c11e9283 | 532 | */ |
af93629d MR |
533 | int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
534 | int x, int y, | |
535 | const struct drm_display_mode *mode, | |
536 | const struct drm_framebuffer *fb) | |
c11e9283 DL |
537 | |
538 | { | |
539 | int hdisplay, vdisplay; | |
540 | ||
196cd5d3 | 541 | drm_mode_get_hv_timing(mode, &hdisplay, &vdisplay); |
a0c1bbb0 | 542 | |
33e0be63 | 543 | if (crtc->state && |
bd2ef25d | 544 | drm_rotation_90_or_270(crtc->primary->state->rotation)) |
c11e9283 DL |
545 | swap(hdisplay, vdisplay); |
546 | ||
43968d7b DV |
547 | return drm_framebuffer_check_src_coords(x << 16, y << 16, |
548 | hdisplay << 16, vdisplay << 16, | |
549 | fb); | |
c11e9283 | 550 | } |
af93629d | 551 | EXPORT_SYMBOL(drm_crtc_check_viewport); |
c11e9283 | 552 | |
f453ba04 DA |
553 | /** |
554 | * drm_mode_setcrtc - set CRTC configuration | |
065a50ed DV |
555 | * @dev: drm device for the ioctl |
556 | * @data: data pointer for the ioctl | |
557 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 558 | * |
f453ba04 DA |
559 | * Build a new CRTC configuration based on user request. |
560 | * | |
561 | * Called by the user via ioctl. | |
562 | * | |
c8e32cc1 | 563 | * Returns: |
1a498633 | 564 | * Zero on success, negative errno on failure. |
f453ba04 DA |
565 | */ |
566 | int drm_mode_setcrtc(struct drm_device *dev, void *data, | |
567 | struct drm_file *file_priv) | |
568 | { | |
569 | struct drm_mode_config *config = &dev->mode_config; | |
570 | struct drm_mode_crtc *crtc_req = data; | |
6653cc8d | 571 | struct drm_crtc *crtc; |
64c32b49 | 572 | struct drm_plane *plane; |
f453ba04 DA |
573 | struct drm_connector **connector_set = NULL, *connector; |
574 | struct drm_framebuffer *fb = NULL; | |
575 | struct drm_display_mode *mode = NULL; | |
576 | struct drm_mode_set set; | |
577 | uint32_t __user *set_connectors_ptr; | |
2ceb585a | 578 | struct drm_modeset_acquire_ctx ctx; |
4a1b0714 | 579 | int ret; |
f453ba04 DA |
580 | int i; |
581 | ||
fb3b06c8 DA |
582 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
583 | return -EINVAL; | |
584 | ||
01447e9f ZJ |
585 | /* |
586 | * Universal plane src offsets are only 16.16, prevent havoc for | |
587 | * drivers using universal plane code internally. | |
588 | */ | |
589 | if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) | |
1d97e915 VS |
590 | return -ERANGE; |
591 | ||
418da172 | 592 | crtc = drm_crtc_find(dev, file_priv, crtc_req->crtc_id); |
a2b34e22 | 593 | if (!crtc) { |
58367ed6 | 594 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); |
2ceb585a | 595 | return -ENOENT; |
f453ba04 | 596 | } |
fa3ab4c2 | 597 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
f453ba04 | 598 | |
64c32b49 VS |
599 | plane = crtc->primary; |
600 | ||
53552d5d | 601 | mutex_lock(&crtc->dev->mode_config.mutex); |
3fa6a073 | 602 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
2ceb585a DV |
603 | retry: |
604 | ret = drm_modeset_lock_all_ctx(crtc->dev, &ctx); | |
605 | if (ret) | |
606 | goto out; | |
bf2d5eb9 | 607 | |
f453ba04 DA |
608 | if (crtc_req->mode_valid) { |
609 | /* If we have a mode we need a framebuffer. */ | |
610 | /* If we pass -1, set the mode with the currently bound fb */ | |
611 | if (crtc_req->fb_id == -1) { | |
a36c027d VS |
612 | struct drm_framebuffer *old_fb; |
613 | ||
614 | if (plane->state) | |
615 | old_fb = plane->state->fb; | |
616 | else | |
617 | old_fb = plane->fb; | |
618 | ||
619 | if (!old_fb) { | |
6653cc8d VS |
620 | DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); |
621 | ret = -EINVAL; | |
622 | goto out; | |
f453ba04 | 623 | } |
bf2d5eb9 | 624 | |
a36c027d | 625 | fb = old_fb; |
b0d12325 | 626 | /* Make refcounting symmetric with the lookup path. */ |
a4a69da0 | 627 | drm_framebuffer_get(fb); |
f453ba04 | 628 | } else { |
418da172 | 629 | fb = drm_framebuffer_lookup(dev, file_priv, crtc_req->fb_id); |
786b99ed | 630 | if (!fb) { |
58367ed6 ZY |
631 | DRM_DEBUG_KMS("Unknown FB ID%d\n", |
632 | crtc_req->fb_id); | |
37c4e705 | 633 | ret = -ENOENT; |
f453ba04 DA |
634 | goto out; |
635 | } | |
f453ba04 DA |
636 | } |
637 | ||
638 | mode = drm_mode_create(dev); | |
ee34ab5b VS |
639 | if (!mode) { |
640 | ret = -ENOMEM; | |
641 | goto out; | |
642 | } | |
ace5bf0e AN |
643 | if (!file_priv->aspect_ratio_allowed && |
644 | (crtc_req->mode.flags & DRM_MODE_FLAG_PIC_AR_MASK) != DRM_MODE_FLAG_PIC_AR_NONE) { | |
645 | DRM_DEBUG_KMS("Unexpected aspect-ratio flag bits\n"); | |
646 | ret = -EINVAL; | |
647 | goto out; | |
648 | } | |
649 | ||
ee34ab5b | 650 | |
75a655e0 | 651 | ret = drm_mode_convert_umode(dev, mode, &crtc_req->mode); |
90367bf6 | 652 | if (ret) { |
6ab0edf4 VS |
653 | DRM_DEBUG_KMS("Invalid mode (ret=%d, status=%s)\n", |
654 | ret, drm_get_mode_status_name(mode->status)); | |
655 | drm_mode_debug_printmodeline(mode); | |
90367bf6 VS |
656 | goto out; |
657 | } | |
658 | ||
7eb5f302 LP |
659 | /* |
660 | * Check whether the primary plane supports the fb pixel format. | |
661 | * Drivers not implementing the universal planes API use a | |
662 | * default formats list provided by the DRM core which doesn't | |
663 | * match real hardware capabilities. Skip the check in that | |
664 | * case. | |
665 | */ | |
64c32b49 VS |
666 | if (!plane->format_default) { |
667 | ret = drm_plane_check_pixel_format(plane, | |
23163a7d VS |
668 | fb->format->format, |
669 | fb->modifier); | |
7eb5f302 | 670 | if (ret) { |
b3c11ac2 | 671 | struct drm_format_name_buf format_name; |
23163a7d VS |
672 | DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n", |
673 | drm_get_format_name(fb->format->format, | |
674 | &format_name), | |
675 | fb->modifier); | |
7eb5f302 LP |
676 | goto out; |
677 | } | |
678 | } | |
679 | ||
c11e9283 DL |
680 | ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
681 | mode, fb); | |
682 | if (ret) | |
5f61bb42 | 683 | goto out; |
c11e9283 | 684 | |
f453ba04 DA |
685 | } |
686 | ||
687 | if (crtc_req->count_connectors == 0 && mode) { | |
58367ed6 | 688 | DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); |
f453ba04 DA |
689 | ret = -EINVAL; |
690 | goto out; | |
691 | } | |
692 | ||
7781de74 | 693 | if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
58367ed6 | 694 | DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", |
f453ba04 DA |
695 | crtc_req->count_connectors); |
696 | ret = -EINVAL; | |
697 | goto out; | |
698 | } | |
699 | ||
700 | if (crtc_req->count_connectors > 0) { | |
701 | u32 out_id; | |
702 | ||
703 | /* Avoid unbounded kernel memory allocation */ | |
704 | if (crtc_req->count_connectors > config->num_connector) { | |
705 | ret = -EINVAL; | |
706 | goto out; | |
707 | } | |
708 | ||
2f6c5389 TR |
709 | connector_set = kmalloc_array(crtc_req->count_connectors, |
710 | sizeof(struct drm_connector *), | |
711 | GFP_KERNEL); | |
f453ba04 DA |
712 | if (!connector_set) { |
713 | ret = -ENOMEM; | |
714 | goto out; | |
715 | } | |
716 | ||
717 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
b164d31f | 718 | connector_set[i] = NULL; |
81f6c7f8 | 719 | set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
f453ba04 DA |
720 | if (get_user(out_id, &set_connectors_ptr[i])) { |
721 | ret = -EFAULT; | |
722 | goto out; | |
723 | } | |
724 | ||
418da172 | 725 | connector = drm_connector_lookup(dev, file_priv, out_id); |
a2b34e22 | 726 | if (!connector) { |
58367ed6 ZY |
727 | DRM_DEBUG_KMS("Connector id %d unknown\n", |
728 | out_id); | |
f27657f2 | 729 | ret = -ENOENT; |
f453ba04 DA |
730 | goto out; |
731 | } | |
9440106b JG |
732 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
733 | connector->base.id, | |
25933820 | 734 | connector->name); |
f453ba04 DA |
735 | |
736 | connector_set[i] = connector; | |
737 | } | |
738 | } | |
739 | ||
740 | set.crtc = crtc; | |
741 | set.x = crtc_req->x; | |
742 | set.y = crtc_req->y; | |
743 | set.mode = mode; | |
744 | set.connectors = connector_set; | |
745 | set.num_connectors = crtc_req->count_connectors; | |
5ef5f72f | 746 | set.fb = fb; |
69a8a196 VS |
747 | |
748 | if (drm_drv_uses_atomic_modeset(dev)) | |
749 | ret = crtc->funcs->set_config(&set, &ctx); | |
750 | else | |
751 | ret = __drm_mode_set_config_internal(&set, &ctx); | |
f453ba04 DA |
752 | |
753 | out: | |
b0d12325 | 754 | if (fb) |
a4a69da0 | 755 | drm_framebuffer_put(fb); |
b0d12325 | 756 | |
b164d31f DA |
757 | if (connector_set) { |
758 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
759 | if (connector_set[i]) | |
ad093607 | 760 | drm_connector_put(connector_set[i]); |
b164d31f DA |
761 | } |
762 | } | |
f453ba04 | 763 | kfree(connector_set); |
ee34ab5b | 764 | drm_mode_destroy(dev, mode); |
2ceb585a | 765 | if (ret == -EDEADLK) { |
3fa6a073 ML |
766 | ret = drm_modeset_backoff(&ctx); |
767 | if (!ret) | |
768 | goto retry; | |
2ceb585a DV |
769 | } |
770 | drm_modeset_drop_locks(&ctx); | |
771 | drm_modeset_acquire_fini(&ctx); | |
53552d5d | 772 | mutex_unlock(&crtc->dev->mode_config.mutex); |
2ceb585a | 773 | |
f453ba04 DA |
774 | return ret; |
775 | } | |
776 | ||
949619f3 DV |
777 | int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, |
778 | struct drm_property *property, | |
779 | uint64_t value) | |
4a67d391 | 780 | { |
bffd9de0 PZ |
781 | int ret = -EINVAL; |
782 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
4a67d391 | 783 | |
bffd9de0 PZ |
784 | if (crtc->funcs->set_property) |
785 | ret = crtc->funcs->set_property(crtc, property, value); | |
144a7999 | 786 | if (!ret) |
bffd9de0 | 787 | drm_object_property_set_value(obj, property, value); |
4a67d391 | 788 | |
bffd9de0 | 789 | return ret; |
4a67d391 | 790 | } |