Commit | Line | Data |
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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> |
760285e7 DH |
37 | #include <drm/drmP.h> |
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> |
f453ba04 | 45 | |
8bd441b2 | 46 | #include "drm_crtc_internal.h" |
67d0ec4e | 47 | #include "drm_internal.h" |
8bd441b2 | 48 | |
d5d487eb DV |
49 | /** |
50 | * DOC: overview | |
51 | * | |
52 | * A CRTC represents the overall display pipeline. It receives pixel data from | |
53 | * &drm_plane and blends them together. The &drm_display_mode is also attached | |
54 | * to the CRTC, specifying display timings. On the output side the data is fed | |
55 | * to one or more &drm_encoder, which are then each connected to one | |
56 | * &drm_connector. | |
57 | * | |
58 | * To create a CRTC, a KMS drivers allocates and zeroes an instances of | |
59 | * &struct drm_crtc (possibly as part of a larger structure) and registers it | |
60 | * with a call to drm_crtc_init_with_planes(). | |
61 | * | |
62 | * The CRTC is also the entry point for legacy modeset operations, see | |
63 | * &drm_crtc_funcs.set_config, legacy plane operations, see | |
64 | * &drm_crtc_funcs.page_flip and &drm_crtc_funcs.cursor_set2, and other legacy | |
65 | * operations like &drm_crtc_funcs.gamma_set. For atomic drivers all these | |
66 | * features are controlled through &drm_property and | |
67 | * &drm_mode_config_funcs.atomic_check and &drm_mode_config_funcs.atomic_check. | |
68 | */ | |
69 | ||
6d1b81d8 SG |
70 | /** |
71 | * drm_crtc_from_index - find the registered CRTC at an index | |
72 | * @dev: DRM device | |
73 | * @idx: index of registered CRTC to find for | |
74 | * | |
75 | * Given a CRTC index, return the registered CRTC from DRM device's | |
931c670d SG |
76 | * list of CRTCs with matching index. This is the inverse of drm_crtc_index(). |
77 | * It's useful in the vblank callbacks (like &drm_driver.enable_vblank or | |
78 | * &drm_driver.disable_vblank), since that still deals with indices instead | |
79 | * of pointers to &struct drm_crtc." | |
6d1b81d8 SG |
80 | */ |
81 | struct drm_crtc *drm_crtc_from_index(struct drm_device *dev, int idx) | |
82 | { | |
83 | struct drm_crtc *crtc; | |
84 | ||
85 | drm_for_each_crtc(crtc, dev) | |
86 | if (idx == crtc->index) | |
87 | return crtc; | |
88 | ||
89 | return NULL; | |
90 | } | |
91 | EXPORT_SYMBOL(drm_crtc_from_index); | |
92 | ||
6a0d9528 LW |
93 | /** |
94 | * drm_crtc_force_disable - Forcibly turn off a CRTC | |
95 | * @crtc: CRTC to turn off | |
96 | * | |
18dddadc DV |
97 | * Note: This should only be used by non-atomic legacy drivers. |
98 | * | |
6a0d9528 LW |
99 | * Returns: |
100 | * Zero on success, error code on failure. | |
101 | */ | |
102 | int drm_crtc_force_disable(struct drm_crtc *crtc) | |
103 | { | |
104 | struct drm_mode_set set = { | |
105 | .crtc = crtc, | |
106 | }; | |
107 | ||
18dddadc DV |
108 | WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev)); |
109 | ||
6a0d9528 LW |
110 | return drm_mode_set_config_internal(&set); |
111 | } | |
112 | EXPORT_SYMBOL(drm_crtc_force_disable); | |
113 | ||
114 | /** | |
115 | * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs | |
116 | * @dev: DRM device whose CRTCs to turn off | |
117 | * | |
118 | * Drivers may want to call this on unload to ensure that all displays are | |
119 | * unlit and the GPU is in a consistent, low power state. Takes modeset locks. | |
120 | * | |
18dddadc DV |
121 | * Note: This should only be used by non-atomic legacy drivers. For an atomic |
122 | * version look at drm_atomic_helper_shutdown(). | |
123 | * | |
6a0d9528 LW |
124 | * Returns: |
125 | * Zero on success, error code on failure. | |
126 | */ | |
127 | int drm_crtc_force_disable_all(struct drm_device *dev) | |
128 | { | |
129 | struct drm_crtc *crtc; | |
130 | int ret = 0; | |
131 | ||
132 | drm_modeset_lock_all(dev); | |
133 | drm_for_each_crtc(crtc, dev) | |
134 | if (crtc->enabled) { | |
135 | ret = drm_crtc_force_disable(crtc); | |
136 | if (ret) | |
137 | goto out; | |
138 | } | |
139 | out: | |
140 | drm_modeset_unlock_all(dev); | |
141 | return ret; | |
142 | } | |
143 | EXPORT_SYMBOL(drm_crtc_force_disable_all); | |
144 | ||
fa3ab4c2 VS |
145 | static unsigned int drm_num_crtcs(struct drm_device *dev) |
146 | { | |
147 | unsigned int num = 0; | |
148 | struct drm_crtc *tmp; | |
149 | ||
150 | drm_for_each_crtc(tmp, dev) { | |
151 | num++; | |
152 | } | |
153 | ||
154 | return num; | |
155 | } | |
156 | ||
28575f16 | 157 | int drm_crtc_register_all(struct drm_device *dev) |
79190ea2 BG |
158 | { |
159 | struct drm_crtc *crtc; | |
160 | int ret = 0; | |
161 | ||
162 | drm_for_each_crtc(crtc, dev) { | |
9edbf1fa TV |
163 | if (drm_debugfs_crtc_add(crtc)) |
164 | DRM_ERROR("Failed to initialize debugfs entry for CRTC '%s'.\n", | |
165 | crtc->name); | |
166 | ||
79190ea2 BG |
167 | if (crtc->funcs->late_register) |
168 | ret = crtc->funcs->late_register(crtc); | |
169 | if (ret) | |
170 | return ret; | |
171 | } | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
28575f16 | 176 | void drm_crtc_unregister_all(struct drm_device *dev) |
79190ea2 BG |
177 | { |
178 | struct drm_crtc *crtc; | |
179 | ||
180 | drm_for_each_crtc(crtc, dev) { | |
181 | if (crtc->funcs->early_unregister) | |
182 | crtc->funcs->early_unregister(crtc); | |
9edbf1fa | 183 | drm_debugfs_crtc_remove(crtc); |
79190ea2 BG |
184 | } |
185 | } | |
186 | ||
9edbf1fa TV |
187 | static int drm_crtc_crc_init(struct drm_crtc *crtc) |
188 | { | |
189 | #ifdef CONFIG_DEBUG_FS | |
190 | spin_lock_init(&crtc->crc.lock); | |
191 | init_waitqueue_head(&crtc->crc.wq); | |
192 | crtc->crc.source = kstrdup("auto", GFP_KERNEL); | |
193 | if (!crtc->crc.source) | |
194 | return -ENOMEM; | |
195 | #endif | |
196 | return 0; | |
197 | } | |
198 | ||
199 | static void drm_crtc_crc_fini(struct drm_crtc *crtc) | |
200 | { | |
201 | #ifdef CONFIG_DEBUG_FS | |
202 | kfree(crtc->crc.source); | |
203 | #endif | |
204 | } | |
205 | ||
35f8cc3b GP |
206 | static const struct dma_fence_ops drm_crtc_fence_ops; |
207 | ||
6d6003c4 GP |
208 | static struct drm_crtc *fence_to_crtc(struct dma_fence *fence) |
209 | { | |
210 | BUG_ON(fence->ops != &drm_crtc_fence_ops); | |
211 | return container_of(fence->lock, struct drm_crtc, fence_lock); | |
212 | } | |
213 | ||
214 | static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence) | |
215 | { | |
216 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
217 | ||
218 | return crtc->dev->driver->name; | |
219 | } | |
220 | ||
221 | static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence) | |
222 | { | |
223 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
224 | ||
225 | return crtc->timeline_name; | |
226 | } | |
227 | ||
228 | static bool drm_crtc_fence_enable_signaling(struct dma_fence *fence) | |
229 | { | |
230 | return true; | |
231 | } | |
232 | ||
35f8cc3b | 233 | static const struct dma_fence_ops drm_crtc_fence_ops = { |
6d6003c4 GP |
234 | .get_driver_name = drm_crtc_fence_get_driver_name, |
235 | .get_timeline_name = drm_crtc_fence_get_timeline_name, | |
236 | .enable_signaling = drm_crtc_fence_enable_signaling, | |
237 | .wait = dma_fence_default_wait, | |
238 | }; | |
239 | ||
35f8cc3b GP |
240 | struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc) |
241 | { | |
242 | struct dma_fence *fence; | |
243 | ||
244 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); | |
245 | if (!fence) | |
246 | return NULL; | |
247 | ||
248 | dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock, | |
249 | crtc->fence_context, ++crtc->fence_seqno); | |
250 | ||
251 | return fence; | |
252 | } | |
253 | ||
f453ba04 | 254 | /** |
e13161af MR |
255 | * drm_crtc_init_with_planes - Initialise a new CRTC object with |
256 | * specified primary and cursor planes. | |
f453ba04 DA |
257 | * @dev: DRM device |
258 | * @crtc: CRTC object to init | |
e13161af MR |
259 | * @primary: Primary plane for CRTC |
260 | * @cursor: Cursor plane for CRTC | |
f453ba04 | 261 | * @funcs: callbacks for the new CRTC |
f9882876 | 262 | * @name: printf style format string for the CRTC name, or NULL for default name |
f453ba04 | 263 | * |
532b3671 DV |
264 | * Inits a new object created as base part of a driver crtc object. Drivers |
265 | * should use this function instead of drm_crtc_init(), which is only provided | |
266 | * for backwards compatibility with drivers which do not yet support universal | |
267 | * planes). For really simple hardware which has only 1 plane look at | |
268 | * drm_simple_display_pipe_init() instead. | |
6bfc56aa | 269 | * |
c8e32cc1 | 270 | * Returns: |
6bfc56aa | 271 | * Zero on success, error code on failure. |
f453ba04 | 272 | */ |
e13161af MR |
273 | int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, |
274 | struct drm_plane *primary, | |
fc1d3e44 | 275 | struct drm_plane *cursor, |
f9882876 VS |
276 | const struct drm_crtc_funcs *funcs, |
277 | const char *name, ...) | |
f453ba04 | 278 | { |
51fd371b | 279 | struct drm_mode_config *config = &dev->mode_config; |
6bfc56aa VS |
280 | int ret; |
281 | ||
522cf91f BG |
282 | WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); |
283 | WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); | |
284 | ||
f453ba04 DA |
285 | crtc->dev = dev; |
286 | crtc->funcs = funcs; | |
287 | ||
3b24f7d6 DV |
288 | INIT_LIST_HEAD(&crtc->commit_list); |
289 | spin_lock_init(&crtc->commit_lock); | |
290 | ||
51fd371b | 291 | drm_modeset_lock_init(&crtc->mutex); |
2135ea7a | 292 | ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
6bfc56aa | 293 | if (ret) |
baf698b0 | 294 | return ret; |
f453ba04 | 295 | |
fa3ab4c2 VS |
296 | if (name) { |
297 | va_list ap; | |
298 | ||
299 | va_start(ap, name); | |
300 | crtc->name = kvasprintf(GFP_KERNEL, name, ap); | |
301 | va_end(ap); | |
302 | } else { | |
303 | crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", | |
304 | drm_num_crtcs(dev)); | |
305 | } | |
306 | if (!crtc->name) { | |
7c8f6d25 | 307 | drm_mode_object_unregister(dev, &crtc->base); |
fa3ab4c2 VS |
308 | return -ENOMEM; |
309 | } | |
310 | ||
6d6003c4 GP |
311 | crtc->fence_context = dma_fence_context_alloc(1); |
312 | spin_lock_init(&crtc->fence_lock); | |
313 | snprintf(crtc->timeline_name, sizeof(crtc->timeline_name), | |
314 | "CRTC:%d-%s", crtc->base.id, crtc->name); | |
315 | ||
bffd9de0 PZ |
316 | crtc->base.properties = &crtc->properties; |
317 | ||
51fd371b | 318 | list_add_tail(&crtc->head, &config->crtc_list); |
490d3d1b | 319 | crtc->index = config->num_crtc++; |
6bfc56aa | 320 | |
e13161af | 321 | crtc->primary = primary; |
fc1d3e44 | 322 | crtc->cursor = cursor; |
7abc7d47 | 323 | if (primary && !primary->possible_crtcs) |
e13161af | 324 | primary->possible_crtcs = 1 << drm_crtc_index(crtc); |
7abc7d47 | 325 | if (cursor && !cursor->possible_crtcs) |
fc1d3e44 | 326 | cursor->possible_crtcs = 1 << drm_crtc_index(crtc); |
e13161af | 327 | |
9edbf1fa TV |
328 | ret = drm_crtc_crc_init(crtc); |
329 | if (ret) { | |
330 | drm_mode_object_unregister(dev, &crtc->base); | |
331 | return ret; | |
332 | } | |
333 | ||
eab3bbef DV |
334 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
335 | drm_object_attach_property(&crtc->base, config->prop_active, 0); | |
955f3c33 | 336 | drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); |
beaf5af4 GP |
337 | drm_object_attach_property(&crtc->base, |
338 | config->prop_out_fence_ptr, 0); | |
eab3bbef DV |
339 | } |
340 | ||
baf698b0 | 341 | return 0; |
f453ba04 | 342 | } |
e13161af | 343 | EXPORT_SYMBOL(drm_crtc_init_with_planes); |
f453ba04 DA |
344 | |
345 | /** | |
ad6f5c34 | 346 | * drm_crtc_cleanup - Clean up the core crtc usage |
f453ba04 DA |
347 | * @crtc: CRTC to cleanup |
348 | * | |
ad6f5c34 VS |
349 | * This function cleans up @crtc and removes it from the DRM mode setting |
350 | * core. Note that the function does *not* free the crtc structure itself, | |
351 | * this is the responsibility of the caller. | |
f453ba04 DA |
352 | */ |
353 | void drm_crtc_cleanup(struct drm_crtc *crtc) | |
354 | { | |
355 | struct drm_device *dev = crtc->dev; | |
356 | ||
490d3d1b CW |
357 | /* Note that the crtc_list is considered to be static; should we |
358 | * remove the drm_crtc at runtime we would have to decrement all | |
359 | * the indices on the drm_crtc after us in the crtc_list. | |
360 | */ | |
361 | ||
9edbf1fa TV |
362 | drm_crtc_crc_fini(crtc); |
363 | ||
9e1c156f SK |
364 | kfree(crtc->gamma_store); |
365 | crtc->gamma_store = NULL; | |
f453ba04 | 366 | |
51fd371b RC |
367 | drm_modeset_lock_fini(&crtc->mutex); |
368 | ||
7c8f6d25 | 369 | drm_mode_object_unregister(dev, &crtc->base); |
f453ba04 DA |
370 | list_del(&crtc->head); |
371 | dev->mode_config.num_crtc--; | |
3009c037 TR |
372 | |
373 | WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); | |
374 | if (crtc->state && crtc->funcs->atomic_destroy_state) | |
375 | crtc->funcs->atomic_destroy_state(crtc, crtc->state); | |
a18c0af1 | 376 | |
fa3ab4c2 VS |
377 | kfree(crtc->name); |
378 | ||
a18c0af1 | 379 | memset(crtc, 0, sizeof(*crtc)); |
f453ba04 DA |
380 | } |
381 | EXPORT_SYMBOL(drm_crtc_cleanup); | |
382 | ||
f453ba04 DA |
383 | /** |
384 | * drm_mode_getcrtc - get CRTC configuration | |
065a50ed DV |
385 | * @dev: drm device for the ioctl |
386 | * @data: data pointer for the ioctl | |
387 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 388 | * |
f453ba04 DA |
389 | * Construct a CRTC configuration structure to return to the user. |
390 | * | |
391 | * Called by the user via ioctl. | |
392 | * | |
c8e32cc1 | 393 | * Returns: |
1a498633 | 394 | * Zero on success, negative errno on failure. |
f453ba04 DA |
395 | */ |
396 | int drm_mode_getcrtc(struct drm_device *dev, | |
397 | void *data, struct drm_file *file_priv) | |
398 | { | |
399 | struct drm_mode_crtc *crtc_resp = data; | |
400 | struct drm_crtc *crtc; | |
f453ba04 | 401 | |
fb3b06c8 DA |
402 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
403 | return -EINVAL; | |
404 | ||
a2b34e22 | 405 | crtc = drm_crtc_find(dev, crtc_resp->crtc_id); |
fcf93f69 DV |
406 | if (!crtc) |
407 | return -ENOENT; | |
f453ba04 | 408 | |
f453ba04 | 409 | crtc_resp->gamma_size = crtc->gamma_size; |
de7b6be7 | 410 | |
2c77bb29 | 411 | drm_modeset_lock(&crtc->primary->mutex, NULL); |
de7b6be7 DS |
412 | if (crtc->primary->state && crtc->primary->state->fb) |
413 | crtc_resp->fb_id = crtc->primary->state->fb->base.id; | |
414 | else if (!crtc->primary->state && crtc->primary->fb) | |
f4510a27 | 415 | crtc_resp->fb_id = crtc->primary->fb->base.id; |
f453ba04 DA |
416 | else |
417 | crtc_resp->fb_id = 0; | |
418 | ||
2c77bb29 | 419 | if (crtc->primary->state) { |
31c946e8 DV |
420 | crtc_resp->x = crtc->primary->state->src_x >> 16; |
421 | crtc_resp->y = crtc->primary->state->src_y >> 16; | |
2c77bb29 DV |
422 | } |
423 | drm_modeset_unlock(&crtc->primary->mutex); | |
424 | ||
425 | drm_modeset_lock(&crtc->mutex, NULL); | |
426 | if (crtc->state) { | |
31c946e8 | 427 | if (crtc->state->enable) { |
934a8a89 | 428 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); |
31c946e8 | 429 | crtc_resp->mode_valid = 1; |
f453ba04 | 430 | |
31c946e8 DV |
431 | } else { |
432 | crtc_resp->mode_valid = 0; | |
433 | } | |
f453ba04 | 434 | } else { |
31c946e8 DV |
435 | crtc_resp->x = crtc->x; |
436 | crtc_resp->y = crtc->y; | |
437 | if (crtc->enabled) { | |
934a8a89 | 438 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); |
31c946e8 DV |
439 | crtc_resp->mode_valid = 1; |
440 | ||
441 | } else { | |
442 | crtc_resp->mode_valid = 0; | |
443 | } | |
f453ba04 | 444 | } |
2c77bb29 | 445 | drm_modeset_unlock(&crtc->mutex); |
f453ba04 | 446 | |
baf698b0 | 447 | return 0; |
f453ba04 DA |
448 | } |
449 | ||
2ceb585a DV |
450 | static int __drm_mode_set_config_internal(struct drm_mode_set *set, |
451 | struct drm_modeset_acquire_ctx *ctx) | |
2d13b679 DV |
452 | { |
453 | struct drm_crtc *crtc = set->crtc; | |
5cef29aa DV |
454 | struct drm_framebuffer *fb; |
455 | struct drm_crtc *tmp; | |
b0d12325 DV |
456 | int ret; |
457 | ||
5cef29aa DV |
458 | /* |
459 | * NOTE: ->set_config can also disable other crtcs (if we steal all | |
460 | * connectors from it), hence we need to refcount the fbs across all | |
461 | * crtcs. Atomic modeset will have saner semantics ... | |
462 | */ | |
e4f62546 | 463 | drm_for_each_crtc(tmp, crtc->dev) |
3d30a59b | 464 | tmp->primary->old_fb = tmp->primary->fb; |
5cef29aa | 465 | |
b0d12325 | 466 | fb = set->fb; |
2d13b679 | 467 | |
a4eff9aa | 468 | ret = crtc->funcs->set_config(set, ctx); |
b0d12325 | 469 | if (ret == 0) { |
e13161af | 470 | crtc->primary->crtc = crtc; |
0fe27f06 | 471 | crtc->primary->fb = fb; |
5cef29aa | 472 | } |
cc85e121 | 473 | |
e4f62546 | 474 | drm_for_each_crtc(tmp, crtc->dev) { |
f4510a27 | 475 | if (tmp->primary->fb) |
a4a69da0 | 476 | drm_framebuffer_get(tmp->primary->fb); |
3d30a59b | 477 | if (tmp->primary->old_fb) |
a4a69da0 | 478 | drm_framebuffer_put(tmp->primary->old_fb); |
3d30a59b | 479 | tmp->primary->old_fb = NULL; |
b0d12325 DV |
480 | } |
481 | ||
482 | return ret; | |
2d13b679 | 483 | } |
d49473a5 DV |
484 | /** |
485 | * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config | |
486 | * @set: modeset config to set | |
487 | * | |
488 | * This is a little helper to wrap internal calls to the | |
489 | * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is | |
490 | * correct refcounting dance. | |
491 | * | |
492 | * This should only be used by non-atomic legacy drivers. | |
493 | * | |
494 | * Returns: | |
495 | * Zero on success, negative errno on failure. | |
496 | */ | |
497 | int drm_mode_set_config_internal(struct drm_mode_set *set) | |
498 | { | |
499 | WARN_ON(drm_drv_uses_atomic_modeset(set->crtc->dev)); | |
500 | ||
2ceb585a | 501 | return __drm_mode_set_config_internal(set, NULL); |
d49473a5 | 502 | } |
2d13b679 DV |
503 | EXPORT_SYMBOL(drm_mode_set_config_internal); |
504 | ||
af93629d MR |
505 | /** |
506 | * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the | |
507 | * CRTC viewport | |
508 | * @crtc: CRTC that framebuffer will be displayed on | |
509 | * @x: x panning | |
510 | * @y: y panning | |
511 | * @mode: mode that framebuffer will be displayed under | |
512 | * @fb: framebuffer to check size of | |
c11e9283 | 513 | */ |
af93629d MR |
514 | int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
515 | int x, int y, | |
516 | const struct drm_display_mode *mode, | |
517 | const struct drm_framebuffer *fb) | |
c11e9283 DL |
518 | |
519 | { | |
520 | int hdisplay, vdisplay; | |
521 | ||
196cd5d3 | 522 | drm_mode_get_hv_timing(mode, &hdisplay, &vdisplay); |
a0c1bbb0 | 523 | |
33e0be63 | 524 | if (crtc->state && |
bd2ef25d | 525 | drm_rotation_90_or_270(crtc->primary->state->rotation)) |
c11e9283 DL |
526 | swap(hdisplay, vdisplay); |
527 | ||
43968d7b DV |
528 | return drm_framebuffer_check_src_coords(x << 16, y << 16, |
529 | hdisplay << 16, vdisplay << 16, | |
530 | fb); | |
c11e9283 | 531 | } |
af93629d | 532 | EXPORT_SYMBOL(drm_crtc_check_viewport); |
c11e9283 | 533 | |
f453ba04 DA |
534 | /** |
535 | * drm_mode_setcrtc - set CRTC configuration | |
065a50ed DV |
536 | * @dev: drm device for the ioctl |
537 | * @data: data pointer for the ioctl | |
538 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 539 | * |
f453ba04 DA |
540 | * Build a new CRTC configuration based on user request. |
541 | * | |
542 | * Called by the user via ioctl. | |
543 | * | |
c8e32cc1 | 544 | * Returns: |
1a498633 | 545 | * Zero on success, negative errno on failure. |
f453ba04 DA |
546 | */ |
547 | int drm_mode_setcrtc(struct drm_device *dev, void *data, | |
548 | struct drm_file *file_priv) | |
549 | { | |
550 | struct drm_mode_config *config = &dev->mode_config; | |
551 | struct drm_mode_crtc *crtc_req = data; | |
6653cc8d | 552 | struct drm_crtc *crtc; |
f453ba04 DA |
553 | struct drm_connector **connector_set = NULL, *connector; |
554 | struct drm_framebuffer *fb = NULL; | |
555 | struct drm_display_mode *mode = NULL; | |
556 | struct drm_mode_set set; | |
557 | uint32_t __user *set_connectors_ptr; | |
2ceb585a | 558 | struct drm_modeset_acquire_ctx ctx; |
4a1b0714 | 559 | int ret; |
f453ba04 DA |
560 | int i; |
561 | ||
fb3b06c8 DA |
562 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
563 | return -EINVAL; | |
564 | ||
01447e9f ZJ |
565 | /* |
566 | * Universal plane src offsets are only 16.16, prevent havoc for | |
567 | * drivers using universal plane code internally. | |
568 | */ | |
569 | if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) | |
1d97e915 VS |
570 | return -ERANGE; |
571 | ||
a2b34e22 RC |
572 | crtc = drm_crtc_find(dev, crtc_req->crtc_id); |
573 | if (!crtc) { | |
58367ed6 | 574 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); |
2ceb585a | 575 | return -ENOENT; |
f453ba04 | 576 | } |
fa3ab4c2 | 577 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
f453ba04 | 578 | |
53552d5d | 579 | mutex_lock(&crtc->dev->mode_config.mutex); |
2ceb585a DV |
580 | drm_modeset_acquire_init(&ctx, 0); |
581 | retry: | |
582 | ret = drm_modeset_lock_all_ctx(crtc->dev, &ctx); | |
583 | if (ret) | |
584 | goto out; | |
f453ba04 DA |
585 | if (crtc_req->mode_valid) { |
586 | /* If we have a mode we need a framebuffer. */ | |
587 | /* If we pass -1, set the mode with the currently bound fb */ | |
588 | if (crtc_req->fb_id == -1) { | |
f4510a27 | 589 | if (!crtc->primary->fb) { |
6653cc8d VS |
590 | DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); |
591 | ret = -EINVAL; | |
592 | goto out; | |
f453ba04 | 593 | } |
f4510a27 | 594 | fb = crtc->primary->fb; |
b0d12325 | 595 | /* Make refcounting symmetric with the lookup path. */ |
a4a69da0 | 596 | drm_framebuffer_get(fb); |
f453ba04 | 597 | } else { |
786b99ed DV |
598 | fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); |
599 | if (!fb) { | |
58367ed6 ZY |
600 | DRM_DEBUG_KMS("Unknown FB ID%d\n", |
601 | crtc_req->fb_id); | |
37c4e705 | 602 | ret = -ENOENT; |
f453ba04 DA |
603 | goto out; |
604 | } | |
f453ba04 DA |
605 | } |
606 | ||
607 | mode = drm_mode_create(dev); | |
ee34ab5b VS |
608 | if (!mode) { |
609 | ret = -ENOMEM; | |
610 | goto out; | |
611 | } | |
612 | ||
934a8a89 | 613 | ret = drm_mode_convert_umode(mode, &crtc_req->mode); |
90367bf6 VS |
614 | if (ret) { |
615 | DRM_DEBUG_KMS("Invalid mode\n"); | |
616 | goto out; | |
617 | } | |
618 | ||
7eb5f302 LP |
619 | /* |
620 | * Check whether the primary plane supports the fb pixel format. | |
621 | * Drivers not implementing the universal planes API use a | |
622 | * default formats list provided by the DRM core which doesn't | |
623 | * match real hardware capabilities. Skip the check in that | |
624 | * case. | |
625 | */ | |
626 | if (!crtc->primary->format_default) { | |
627 | ret = drm_plane_check_pixel_format(crtc->primary, | |
438b74a5 | 628 | fb->format->format); |
7eb5f302 | 629 | if (ret) { |
b3c11ac2 EE |
630 | struct drm_format_name_buf format_name; |
631 | DRM_DEBUG_KMS("Invalid pixel format %s\n", | |
438b74a5 | 632 | drm_get_format_name(fb->format->format, |
b3c11ac2 | 633 | &format_name)); |
7eb5f302 LP |
634 | goto out; |
635 | } | |
636 | } | |
637 | ||
c11e9283 DL |
638 | ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
639 | mode, fb); | |
640 | if (ret) | |
5f61bb42 | 641 | goto out; |
c11e9283 | 642 | |
f453ba04 DA |
643 | } |
644 | ||
645 | if (crtc_req->count_connectors == 0 && mode) { | |
58367ed6 | 646 | DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); |
f453ba04 DA |
647 | ret = -EINVAL; |
648 | goto out; | |
649 | } | |
650 | ||
7781de74 | 651 | if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
58367ed6 | 652 | DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", |
f453ba04 DA |
653 | crtc_req->count_connectors); |
654 | ret = -EINVAL; | |
655 | goto out; | |
656 | } | |
657 | ||
658 | if (crtc_req->count_connectors > 0) { | |
659 | u32 out_id; | |
660 | ||
661 | /* Avoid unbounded kernel memory allocation */ | |
662 | if (crtc_req->count_connectors > config->num_connector) { | |
663 | ret = -EINVAL; | |
664 | goto out; | |
665 | } | |
666 | ||
2f6c5389 TR |
667 | connector_set = kmalloc_array(crtc_req->count_connectors, |
668 | sizeof(struct drm_connector *), | |
669 | GFP_KERNEL); | |
f453ba04 DA |
670 | if (!connector_set) { |
671 | ret = -ENOMEM; | |
672 | goto out; | |
673 | } | |
674 | ||
675 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
b164d31f | 676 | connector_set[i] = NULL; |
81f6c7f8 | 677 | set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
f453ba04 DA |
678 | if (get_user(out_id, &set_connectors_ptr[i])) { |
679 | ret = -EFAULT; | |
680 | goto out; | |
681 | } | |
682 | ||
b164d31f | 683 | connector = drm_connector_lookup(dev, out_id); |
a2b34e22 | 684 | if (!connector) { |
58367ed6 ZY |
685 | DRM_DEBUG_KMS("Connector id %d unknown\n", |
686 | out_id); | |
f27657f2 | 687 | ret = -ENOENT; |
f453ba04 DA |
688 | goto out; |
689 | } | |
9440106b JG |
690 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
691 | connector->base.id, | |
25933820 | 692 | connector->name); |
f453ba04 DA |
693 | |
694 | connector_set[i] = connector; | |
695 | } | |
696 | } | |
697 | ||
698 | set.crtc = crtc; | |
699 | set.x = crtc_req->x; | |
700 | set.y = crtc_req->y; | |
701 | set.mode = mode; | |
702 | set.connectors = connector_set; | |
703 | set.num_connectors = crtc_req->count_connectors; | |
5ef5f72f | 704 | set.fb = fb; |
2ceb585a | 705 | ret = __drm_mode_set_config_internal(&set, &ctx); |
f453ba04 DA |
706 | |
707 | out: | |
b0d12325 | 708 | if (fb) |
a4a69da0 | 709 | drm_framebuffer_put(fb); |
b0d12325 | 710 | |
b164d31f DA |
711 | if (connector_set) { |
712 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
713 | if (connector_set[i]) | |
ad093607 | 714 | drm_connector_put(connector_set[i]); |
b164d31f DA |
715 | } |
716 | } | |
f453ba04 | 717 | kfree(connector_set); |
ee34ab5b | 718 | drm_mode_destroy(dev, mode); |
2ceb585a DV |
719 | if (ret == -EDEADLK) { |
720 | drm_modeset_backoff(&ctx); | |
721 | goto retry; | |
722 | } | |
723 | drm_modeset_drop_locks(&ctx); | |
724 | drm_modeset_acquire_fini(&ctx); | |
53552d5d | 725 | mutex_unlock(&crtc->dev->mode_config.mutex); |
2ceb585a | 726 | |
f453ba04 DA |
727 | return ret; |
728 | } | |
729 | ||
949619f3 DV |
730 | int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, |
731 | struct drm_property *property, | |
732 | uint64_t value) | |
4a67d391 | 733 | { |
bffd9de0 PZ |
734 | int ret = -EINVAL; |
735 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
4a67d391 | 736 | |
bffd9de0 PZ |
737 | if (crtc->funcs->set_property) |
738 | ret = crtc->funcs->set_property(crtc, property, value); | |
739 | if (!ret) | |
740 | drm_object_property_set_value(obj, property, value); | |
4a67d391 | 741 | |
bffd9de0 | 742 | return ret; |
4a67d391 | 743 | } |