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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 | * | |
97 | * Returns: | |
98 | * Zero on success, error code on failure. | |
99 | */ | |
100 | int drm_crtc_force_disable(struct drm_crtc *crtc) | |
101 | { | |
102 | struct drm_mode_set set = { | |
103 | .crtc = crtc, | |
104 | }; | |
105 | ||
106 | return drm_mode_set_config_internal(&set); | |
107 | } | |
108 | EXPORT_SYMBOL(drm_crtc_force_disable); | |
109 | ||
110 | /** | |
111 | * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs | |
112 | * @dev: DRM device whose CRTCs to turn off | |
113 | * | |
114 | * Drivers may want to call this on unload to ensure that all displays are | |
115 | * unlit and the GPU is in a consistent, low power state. Takes modeset locks. | |
116 | * | |
117 | * Returns: | |
118 | * Zero on success, error code on failure. | |
119 | */ | |
120 | int drm_crtc_force_disable_all(struct drm_device *dev) | |
121 | { | |
122 | struct drm_crtc *crtc; | |
123 | int ret = 0; | |
124 | ||
125 | drm_modeset_lock_all(dev); | |
126 | drm_for_each_crtc(crtc, dev) | |
127 | if (crtc->enabled) { | |
128 | ret = drm_crtc_force_disable(crtc); | |
129 | if (ret) | |
130 | goto out; | |
131 | } | |
132 | out: | |
133 | drm_modeset_unlock_all(dev); | |
134 | return ret; | |
135 | } | |
136 | EXPORT_SYMBOL(drm_crtc_force_disable_all); | |
137 | ||
fa3ab4c2 VS |
138 | static unsigned int drm_num_crtcs(struct drm_device *dev) |
139 | { | |
140 | unsigned int num = 0; | |
141 | struct drm_crtc *tmp; | |
142 | ||
143 | drm_for_each_crtc(tmp, dev) { | |
144 | num++; | |
145 | } | |
146 | ||
147 | return num; | |
148 | } | |
149 | ||
28575f16 | 150 | int drm_crtc_register_all(struct drm_device *dev) |
79190ea2 BG |
151 | { |
152 | struct drm_crtc *crtc; | |
153 | int ret = 0; | |
154 | ||
155 | drm_for_each_crtc(crtc, dev) { | |
9edbf1fa TV |
156 | if (drm_debugfs_crtc_add(crtc)) |
157 | DRM_ERROR("Failed to initialize debugfs entry for CRTC '%s'.\n", | |
158 | crtc->name); | |
159 | ||
79190ea2 BG |
160 | if (crtc->funcs->late_register) |
161 | ret = crtc->funcs->late_register(crtc); | |
162 | if (ret) | |
163 | return ret; | |
164 | } | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
28575f16 | 169 | void drm_crtc_unregister_all(struct drm_device *dev) |
79190ea2 BG |
170 | { |
171 | struct drm_crtc *crtc; | |
172 | ||
173 | drm_for_each_crtc(crtc, dev) { | |
174 | if (crtc->funcs->early_unregister) | |
175 | crtc->funcs->early_unregister(crtc); | |
9edbf1fa | 176 | drm_debugfs_crtc_remove(crtc); |
79190ea2 BG |
177 | } |
178 | } | |
179 | ||
9edbf1fa TV |
180 | static int drm_crtc_crc_init(struct drm_crtc *crtc) |
181 | { | |
182 | #ifdef CONFIG_DEBUG_FS | |
183 | spin_lock_init(&crtc->crc.lock); | |
184 | init_waitqueue_head(&crtc->crc.wq); | |
185 | crtc->crc.source = kstrdup("auto", GFP_KERNEL); | |
186 | if (!crtc->crc.source) | |
187 | return -ENOMEM; | |
188 | #endif | |
189 | return 0; | |
190 | } | |
191 | ||
192 | static void drm_crtc_crc_fini(struct drm_crtc *crtc) | |
193 | { | |
194 | #ifdef CONFIG_DEBUG_FS | |
195 | kfree(crtc->crc.source); | |
196 | #endif | |
197 | } | |
198 | ||
35f8cc3b GP |
199 | static const struct dma_fence_ops drm_crtc_fence_ops; |
200 | ||
6d6003c4 GP |
201 | static struct drm_crtc *fence_to_crtc(struct dma_fence *fence) |
202 | { | |
203 | BUG_ON(fence->ops != &drm_crtc_fence_ops); | |
204 | return container_of(fence->lock, struct drm_crtc, fence_lock); | |
205 | } | |
206 | ||
207 | static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence) | |
208 | { | |
209 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
210 | ||
211 | return crtc->dev->driver->name; | |
212 | } | |
213 | ||
214 | static const char *drm_crtc_fence_get_timeline_name(struct dma_fence *fence) | |
215 | { | |
216 | struct drm_crtc *crtc = fence_to_crtc(fence); | |
217 | ||
218 | return crtc->timeline_name; | |
219 | } | |
220 | ||
221 | static bool drm_crtc_fence_enable_signaling(struct dma_fence *fence) | |
222 | { | |
223 | return true; | |
224 | } | |
225 | ||
35f8cc3b | 226 | static const struct dma_fence_ops drm_crtc_fence_ops = { |
6d6003c4 GP |
227 | .get_driver_name = drm_crtc_fence_get_driver_name, |
228 | .get_timeline_name = drm_crtc_fence_get_timeline_name, | |
229 | .enable_signaling = drm_crtc_fence_enable_signaling, | |
230 | .wait = dma_fence_default_wait, | |
231 | }; | |
232 | ||
35f8cc3b GP |
233 | struct dma_fence *drm_crtc_create_fence(struct drm_crtc *crtc) |
234 | { | |
235 | struct dma_fence *fence; | |
236 | ||
237 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); | |
238 | if (!fence) | |
239 | return NULL; | |
240 | ||
241 | dma_fence_init(fence, &drm_crtc_fence_ops, &crtc->fence_lock, | |
242 | crtc->fence_context, ++crtc->fence_seqno); | |
243 | ||
244 | return fence; | |
245 | } | |
246 | ||
f453ba04 | 247 | /** |
e13161af MR |
248 | * drm_crtc_init_with_planes - Initialise a new CRTC object with |
249 | * specified primary and cursor planes. | |
f453ba04 DA |
250 | * @dev: DRM device |
251 | * @crtc: CRTC object to init | |
e13161af MR |
252 | * @primary: Primary plane for CRTC |
253 | * @cursor: Cursor plane for CRTC | |
f453ba04 | 254 | * @funcs: callbacks for the new CRTC |
f9882876 | 255 | * @name: printf style format string for the CRTC name, or NULL for default name |
f453ba04 | 256 | * |
532b3671 DV |
257 | * Inits a new object created as base part of a driver crtc object. Drivers |
258 | * should use this function instead of drm_crtc_init(), which is only provided | |
259 | * for backwards compatibility with drivers which do not yet support universal | |
260 | * planes). For really simple hardware which has only 1 plane look at | |
261 | * drm_simple_display_pipe_init() instead. | |
6bfc56aa | 262 | * |
c8e32cc1 | 263 | * Returns: |
6bfc56aa | 264 | * Zero on success, error code on failure. |
f453ba04 | 265 | */ |
e13161af MR |
266 | int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, |
267 | struct drm_plane *primary, | |
fc1d3e44 | 268 | struct drm_plane *cursor, |
f9882876 VS |
269 | const struct drm_crtc_funcs *funcs, |
270 | const char *name, ...) | |
f453ba04 | 271 | { |
51fd371b | 272 | struct drm_mode_config *config = &dev->mode_config; |
6bfc56aa VS |
273 | int ret; |
274 | ||
522cf91f BG |
275 | WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); |
276 | WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); | |
277 | ||
f453ba04 DA |
278 | crtc->dev = dev; |
279 | crtc->funcs = funcs; | |
280 | ||
3b24f7d6 DV |
281 | INIT_LIST_HEAD(&crtc->commit_list); |
282 | spin_lock_init(&crtc->commit_lock); | |
283 | ||
51fd371b | 284 | drm_modeset_lock_init(&crtc->mutex); |
2135ea7a | 285 | ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
6bfc56aa | 286 | if (ret) |
baf698b0 | 287 | return ret; |
f453ba04 | 288 | |
fa3ab4c2 VS |
289 | if (name) { |
290 | va_list ap; | |
291 | ||
292 | va_start(ap, name); | |
293 | crtc->name = kvasprintf(GFP_KERNEL, name, ap); | |
294 | va_end(ap); | |
295 | } else { | |
296 | crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", | |
297 | drm_num_crtcs(dev)); | |
298 | } | |
299 | if (!crtc->name) { | |
7c8f6d25 | 300 | drm_mode_object_unregister(dev, &crtc->base); |
fa3ab4c2 VS |
301 | return -ENOMEM; |
302 | } | |
303 | ||
6d6003c4 GP |
304 | crtc->fence_context = dma_fence_context_alloc(1); |
305 | spin_lock_init(&crtc->fence_lock); | |
306 | snprintf(crtc->timeline_name, sizeof(crtc->timeline_name), | |
307 | "CRTC:%d-%s", crtc->base.id, crtc->name); | |
308 | ||
bffd9de0 PZ |
309 | crtc->base.properties = &crtc->properties; |
310 | ||
51fd371b | 311 | list_add_tail(&crtc->head, &config->crtc_list); |
490d3d1b | 312 | crtc->index = config->num_crtc++; |
6bfc56aa | 313 | |
e13161af | 314 | crtc->primary = primary; |
fc1d3e44 | 315 | crtc->cursor = cursor; |
7abc7d47 | 316 | if (primary && !primary->possible_crtcs) |
e13161af | 317 | primary->possible_crtcs = 1 << drm_crtc_index(crtc); |
7abc7d47 | 318 | if (cursor && !cursor->possible_crtcs) |
fc1d3e44 | 319 | cursor->possible_crtcs = 1 << drm_crtc_index(crtc); |
e13161af | 320 | |
9edbf1fa TV |
321 | ret = drm_crtc_crc_init(crtc); |
322 | if (ret) { | |
323 | drm_mode_object_unregister(dev, &crtc->base); | |
324 | return ret; | |
325 | } | |
326 | ||
eab3bbef DV |
327 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
328 | drm_object_attach_property(&crtc->base, config->prop_active, 0); | |
955f3c33 | 329 | drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); |
beaf5af4 GP |
330 | drm_object_attach_property(&crtc->base, |
331 | config->prop_out_fence_ptr, 0); | |
eab3bbef DV |
332 | } |
333 | ||
baf698b0 | 334 | return 0; |
f453ba04 | 335 | } |
e13161af | 336 | EXPORT_SYMBOL(drm_crtc_init_with_planes); |
f453ba04 DA |
337 | |
338 | /** | |
ad6f5c34 | 339 | * drm_crtc_cleanup - Clean up the core crtc usage |
f453ba04 DA |
340 | * @crtc: CRTC to cleanup |
341 | * | |
ad6f5c34 VS |
342 | * This function cleans up @crtc and removes it from the DRM mode setting |
343 | * core. Note that the function does *not* free the crtc structure itself, | |
344 | * this is the responsibility of the caller. | |
f453ba04 DA |
345 | */ |
346 | void drm_crtc_cleanup(struct drm_crtc *crtc) | |
347 | { | |
348 | struct drm_device *dev = crtc->dev; | |
349 | ||
490d3d1b CW |
350 | /* Note that the crtc_list is considered to be static; should we |
351 | * remove the drm_crtc at runtime we would have to decrement all | |
352 | * the indices on the drm_crtc after us in the crtc_list. | |
353 | */ | |
354 | ||
9edbf1fa TV |
355 | drm_crtc_crc_fini(crtc); |
356 | ||
9e1c156f SK |
357 | kfree(crtc->gamma_store); |
358 | crtc->gamma_store = NULL; | |
f453ba04 | 359 | |
51fd371b RC |
360 | drm_modeset_lock_fini(&crtc->mutex); |
361 | ||
7c8f6d25 | 362 | drm_mode_object_unregister(dev, &crtc->base); |
f453ba04 DA |
363 | list_del(&crtc->head); |
364 | dev->mode_config.num_crtc--; | |
3009c037 TR |
365 | |
366 | WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); | |
367 | if (crtc->state && crtc->funcs->atomic_destroy_state) | |
368 | crtc->funcs->atomic_destroy_state(crtc, crtc->state); | |
a18c0af1 | 369 | |
fa3ab4c2 VS |
370 | kfree(crtc->name); |
371 | ||
a18c0af1 | 372 | memset(crtc, 0, sizeof(*crtc)); |
f453ba04 DA |
373 | } |
374 | EXPORT_SYMBOL(drm_crtc_cleanup); | |
375 | ||
f453ba04 DA |
376 | /** |
377 | * drm_mode_getcrtc - get CRTC configuration | |
065a50ed DV |
378 | * @dev: drm device for the ioctl |
379 | * @data: data pointer for the ioctl | |
380 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 381 | * |
f453ba04 DA |
382 | * Construct a CRTC configuration structure to return to the user. |
383 | * | |
384 | * Called by the user via ioctl. | |
385 | * | |
c8e32cc1 | 386 | * Returns: |
1a498633 | 387 | * Zero on success, negative errno on failure. |
f453ba04 DA |
388 | */ |
389 | int drm_mode_getcrtc(struct drm_device *dev, | |
390 | void *data, struct drm_file *file_priv) | |
391 | { | |
392 | struct drm_mode_crtc *crtc_resp = data; | |
393 | struct drm_crtc *crtc; | |
f453ba04 | 394 | |
fb3b06c8 DA |
395 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
396 | return -EINVAL; | |
397 | ||
a2b34e22 | 398 | crtc = drm_crtc_find(dev, crtc_resp->crtc_id); |
fcf93f69 DV |
399 | if (!crtc) |
400 | return -ENOENT; | |
f453ba04 | 401 | |
fcf93f69 | 402 | drm_modeset_lock_crtc(crtc, crtc->primary); |
f453ba04 | 403 | crtc_resp->gamma_size = crtc->gamma_size; |
de7b6be7 DS |
404 | |
405 | if (crtc->primary->state && crtc->primary->state->fb) | |
406 | crtc_resp->fb_id = crtc->primary->state->fb->base.id; | |
407 | else if (!crtc->primary->state && crtc->primary->fb) | |
f4510a27 | 408 | crtc_resp->fb_id = crtc->primary->fb->base.id; |
f453ba04 DA |
409 | else |
410 | crtc_resp->fb_id = 0; | |
411 | ||
31c946e8 DV |
412 | if (crtc->state) { |
413 | crtc_resp->x = crtc->primary->state->src_x >> 16; | |
414 | crtc_resp->y = crtc->primary->state->src_y >> 16; | |
415 | if (crtc->state->enable) { | |
934a8a89 | 416 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); |
31c946e8 | 417 | crtc_resp->mode_valid = 1; |
f453ba04 | 418 | |
31c946e8 DV |
419 | } else { |
420 | crtc_resp->mode_valid = 0; | |
421 | } | |
f453ba04 | 422 | } else { |
31c946e8 DV |
423 | crtc_resp->x = crtc->x; |
424 | crtc_resp->y = crtc->y; | |
425 | if (crtc->enabled) { | |
934a8a89 | 426 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); |
31c946e8 DV |
427 | crtc_resp->mode_valid = 1; |
428 | ||
429 | } else { | |
430 | crtc_resp->mode_valid = 0; | |
431 | } | |
f453ba04 | 432 | } |
fcf93f69 | 433 | drm_modeset_unlock_crtc(crtc); |
f453ba04 | 434 | |
baf698b0 | 435 | return 0; |
f453ba04 DA |
436 | } |
437 | ||
2d13b679 | 438 | /** |
d574528a | 439 | * drm_mode_set_config_internal - helper to call &drm_mode_config_funcs.set_config |
2d13b679 DV |
440 | * @set: modeset config to set |
441 | * | |
d574528a DV |
442 | * This is a little helper to wrap internal calls to the |
443 | * &drm_mode_config_funcs.set_config driver interface. The only thing it adds is | |
444 | * correct refcounting dance. | |
4dfd909f | 445 | * |
c8e32cc1 | 446 | * Returns: |
1a498633 | 447 | * Zero on success, negative errno on failure. |
2d13b679 DV |
448 | */ |
449 | int drm_mode_set_config_internal(struct drm_mode_set *set) | |
450 | { | |
451 | struct drm_crtc *crtc = set->crtc; | |
5cef29aa DV |
452 | struct drm_framebuffer *fb; |
453 | struct drm_crtc *tmp; | |
b0d12325 DV |
454 | int ret; |
455 | ||
5cef29aa DV |
456 | /* |
457 | * NOTE: ->set_config can also disable other crtcs (if we steal all | |
458 | * connectors from it), hence we need to refcount the fbs across all | |
459 | * crtcs. Atomic modeset will have saner semantics ... | |
460 | */ | |
e4f62546 | 461 | drm_for_each_crtc(tmp, crtc->dev) |
3d30a59b | 462 | tmp->primary->old_fb = tmp->primary->fb; |
5cef29aa | 463 | |
b0d12325 | 464 | fb = set->fb; |
2d13b679 | 465 | |
b0d12325 DV |
466 | ret = crtc->funcs->set_config(set); |
467 | if (ret == 0) { | |
e13161af | 468 | crtc->primary->crtc = crtc; |
0fe27f06 | 469 | crtc->primary->fb = fb; |
5cef29aa | 470 | } |
cc85e121 | 471 | |
e4f62546 | 472 | drm_for_each_crtc(tmp, crtc->dev) { |
f4510a27 MR |
473 | if (tmp->primary->fb) |
474 | drm_framebuffer_reference(tmp->primary->fb); | |
3d30a59b DV |
475 | if (tmp->primary->old_fb) |
476 | drm_framebuffer_unreference(tmp->primary->old_fb); | |
477 | tmp->primary->old_fb = NULL; | |
b0d12325 DV |
478 | } |
479 | ||
480 | return ret; | |
2d13b679 DV |
481 | } |
482 | EXPORT_SYMBOL(drm_mode_set_config_internal); | |
483 | ||
af93629d MR |
484 | /** |
485 | * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the | |
486 | * CRTC viewport | |
487 | * @crtc: CRTC that framebuffer will be displayed on | |
488 | * @x: x panning | |
489 | * @y: y panning | |
490 | * @mode: mode that framebuffer will be displayed under | |
491 | * @fb: framebuffer to check size of | |
c11e9283 | 492 | */ |
af93629d MR |
493 | int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
494 | int x, int y, | |
495 | const struct drm_display_mode *mode, | |
496 | const struct drm_framebuffer *fb) | |
c11e9283 DL |
497 | |
498 | { | |
499 | int hdisplay, vdisplay; | |
500 | ||
196cd5d3 | 501 | drm_mode_get_hv_timing(mode, &hdisplay, &vdisplay); |
a0c1bbb0 | 502 | |
33e0be63 | 503 | if (crtc->state && |
bd2ef25d | 504 | drm_rotation_90_or_270(crtc->primary->state->rotation)) |
c11e9283 DL |
505 | swap(hdisplay, vdisplay); |
506 | ||
43968d7b DV |
507 | return drm_framebuffer_check_src_coords(x << 16, y << 16, |
508 | hdisplay << 16, vdisplay << 16, | |
509 | fb); | |
c11e9283 | 510 | } |
af93629d | 511 | EXPORT_SYMBOL(drm_crtc_check_viewport); |
c11e9283 | 512 | |
f453ba04 DA |
513 | /** |
514 | * drm_mode_setcrtc - set CRTC configuration | |
065a50ed DV |
515 | * @dev: drm device for the ioctl |
516 | * @data: data pointer for the ioctl | |
517 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 518 | * |
f453ba04 DA |
519 | * Build a new CRTC configuration based on user request. |
520 | * | |
521 | * Called by the user via ioctl. | |
522 | * | |
c8e32cc1 | 523 | * Returns: |
1a498633 | 524 | * Zero on success, negative errno on failure. |
f453ba04 DA |
525 | */ |
526 | int drm_mode_setcrtc(struct drm_device *dev, void *data, | |
527 | struct drm_file *file_priv) | |
528 | { | |
529 | struct drm_mode_config *config = &dev->mode_config; | |
530 | struct drm_mode_crtc *crtc_req = data; | |
6653cc8d | 531 | struct drm_crtc *crtc; |
f453ba04 DA |
532 | struct drm_connector **connector_set = NULL, *connector; |
533 | struct drm_framebuffer *fb = NULL; | |
534 | struct drm_display_mode *mode = NULL; | |
535 | struct drm_mode_set set; | |
536 | uint32_t __user *set_connectors_ptr; | |
4a1b0714 | 537 | int ret; |
f453ba04 DA |
538 | int i; |
539 | ||
fb3b06c8 DA |
540 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
541 | return -EINVAL; | |
542 | ||
01447e9f ZJ |
543 | /* |
544 | * Universal plane src offsets are only 16.16, prevent havoc for | |
545 | * drivers using universal plane code internally. | |
546 | */ | |
547 | if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) | |
1d97e915 VS |
548 | return -ERANGE; |
549 | ||
84849903 | 550 | drm_modeset_lock_all(dev); |
a2b34e22 RC |
551 | crtc = drm_crtc_find(dev, crtc_req->crtc_id); |
552 | if (!crtc) { | |
58367ed6 | 553 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); |
f27657f2 | 554 | ret = -ENOENT; |
f453ba04 DA |
555 | goto out; |
556 | } | |
fa3ab4c2 | 557 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
f453ba04 DA |
558 | |
559 | if (crtc_req->mode_valid) { | |
560 | /* If we have a mode we need a framebuffer. */ | |
561 | /* If we pass -1, set the mode with the currently bound fb */ | |
562 | if (crtc_req->fb_id == -1) { | |
f4510a27 | 563 | if (!crtc->primary->fb) { |
6653cc8d VS |
564 | DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); |
565 | ret = -EINVAL; | |
566 | goto out; | |
f453ba04 | 567 | } |
f4510a27 | 568 | fb = crtc->primary->fb; |
b0d12325 DV |
569 | /* Make refcounting symmetric with the lookup path. */ |
570 | drm_framebuffer_reference(fb); | |
f453ba04 | 571 | } else { |
786b99ed DV |
572 | fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); |
573 | if (!fb) { | |
58367ed6 ZY |
574 | DRM_DEBUG_KMS("Unknown FB ID%d\n", |
575 | crtc_req->fb_id); | |
37c4e705 | 576 | ret = -ENOENT; |
f453ba04 DA |
577 | goto out; |
578 | } | |
f453ba04 DA |
579 | } |
580 | ||
581 | mode = drm_mode_create(dev); | |
ee34ab5b VS |
582 | if (!mode) { |
583 | ret = -ENOMEM; | |
584 | goto out; | |
585 | } | |
586 | ||
934a8a89 | 587 | ret = drm_mode_convert_umode(mode, &crtc_req->mode); |
90367bf6 VS |
588 | if (ret) { |
589 | DRM_DEBUG_KMS("Invalid mode\n"); | |
590 | goto out; | |
591 | } | |
592 | ||
7eb5f302 LP |
593 | /* |
594 | * Check whether the primary plane supports the fb pixel format. | |
595 | * Drivers not implementing the universal planes API use a | |
596 | * default formats list provided by the DRM core which doesn't | |
597 | * match real hardware capabilities. Skip the check in that | |
598 | * case. | |
599 | */ | |
600 | if (!crtc->primary->format_default) { | |
601 | ret = drm_plane_check_pixel_format(crtc->primary, | |
438b74a5 | 602 | fb->format->format); |
7eb5f302 | 603 | if (ret) { |
b3c11ac2 EE |
604 | struct drm_format_name_buf format_name; |
605 | DRM_DEBUG_KMS("Invalid pixel format %s\n", | |
438b74a5 | 606 | drm_get_format_name(fb->format->format, |
b3c11ac2 | 607 | &format_name)); |
7eb5f302 LP |
608 | goto out; |
609 | } | |
610 | } | |
611 | ||
c11e9283 DL |
612 | ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
613 | mode, fb); | |
614 | if (ret) | |
5f61bb42 | 615 | goto out; |
c11e9283 | 616 | |
f453ba04 DA |
617 | } |
618 | ||
619 | if (crtc_req->count_connectors == 0 && mode) { | |
58367ed6 | 620 | DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); |
f453ba04 DA |
621 | ret = -EINVAL; |
622 | goto out; | |
623 | } | |
624 | ||
7781de74 | 625 | if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
58367ed6 | 626 | DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", |
f453ba04 DA |
627 | crtc_req->count_connectors); |
628 | ret = -EINVAL; | |
629 | goto out; | |
630 | } | |
631 | ||
632 | if (crtc_req->count_connectors > 0) { | |
633 | u32 out_id; | |
634 | ||
635 | /* Avoid unbounded kernel memory allocation */ | |
636 | if (crtc_req->count_connectors > config->num_connector) { | |
637 | ret = -EINVAL; | |
638 | goto out; | |
639 | } | |
640 | ||
2f6c5389 TR |
641 | connector_set = kmalloc_array(crtc_req->count_connectors, |
642 | sizeof(struct drm_connector *), | |
643 | GFP_KERNEL); | |
f453ba04 DA |
644 | if (!connector_set) { |
645 | ret = -ENOMEM; | |
646 | goto out; | |
647 | } | |
648 | ||
649 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
b164d31f | 650 | connector_set[i] = NULL; |
81f6c7f8 | 651 | set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
f453ba04 DA |
652 | if (get_user(out_id, &set_connectors_ptr[i])) { |
653 | ret = -EFAULT; | |
654 | goto out; | |
655 | } | |
656 | ||
b164d31f | 657 | connector = drm_connector_lookup(dev, out_id); |
a2b34e22 | 658 | if (!connector) { |
58367ed6 ZY |
659 | DRM_DEBUG_KMS("Connector id %d unknown\n", |
660 | out_id); | |
f27657f2 | 661 | ret = -ENOENT; |
f453ba04 DA |
662 | goto out; |
663 | } | |
9440106b JG |
664 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
665 | connector->base.id, | |
25933820 | 666 | connector->name); |
f453ba04 DA |
667 | |
668 | connector_set[i] = connector; | |
669 | } | |
670 | } | |
671 | ||
672 | set.crtc = crtc; | |
673 | set.x = crtc_req->x; | |
674 | set.y = crtc_req->y; | |
675 | set.mode = mode; | |
676 | set.connectors = connector_set; | |
677 | set.num_connectors = crtc_req->count_connectors; | |
5ef5f72f | 678 | set.fb = fb; |
2d13b679 | 679 | ret = drm_mode_set_config_internal(&set); |
f453ba04 DA |
680 | |
681 | out: | |
b0d12325 DV |
682 | if (fb) |
683 | drm_framebuffer_unreference(fb); | |
684 | ||
b164d31f DA |
685 | if (connector_set) { |
686 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
687 | if (connector_set[i]) | |
688 | drm_connector_unreference(connector_set[i]); | |
689 | } | |
690 | } | |
f453ba04 | 691 | kfree(connector_set); |
ee34ab5b | 692 | drm_mode_destroy(dev, mode); |
84849903 | 693 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
694 | return ret; |
695 | } | |
696 | ||
949619f3 DV |
697 | int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, |
698 | struct drm_property *property, | |
699 | uint64_t value) | |
4a67d391 | 700 | { |
bffd9de0 PZ |
701 | int ret = -EINVAL; |
702 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
4a67d391 | 703 | |
bffd9de0 PZ |
704 | if (crtc->funcs->set_property) |
705 | ret = crtc->funcs->set_property(crtc, property, value); | |
706 | if (!ret) | |
707 | drm_object_property_set_value(obj, property, value); | |
4a67d391 | 708 | |
bffd9de0 | 709 | return ret; |
4a67d391 | 710 | } |