projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
drm: Check user mode against overflows
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
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 */
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/export.h>
35 #include "drm.h"
36 #include "drmP.h"
37 #include "drm_crtc.h"
38 #include "drm_edid.h"
39 #include "drm_fourcc.h"
40
41 /* Avoid boilerplate. I'm tired of typing. */
42 #define DRM_ENUM_NAME_FN(fnname, list) \
43 char *fnname(int val) \
44 { \
45 int i; \
46 for (i = 0; i < ARRAY_SIZE(list); i++) { \
47 if (list[i].type == val) \
48 return list[i].name; \
49 } \
50 return "(unknown)"; \
51 }
52
53 /*
54 * Global properties
55 */
56 static struct drm_prop_enum_list drm_dpms_enum_list[] =
57 { { DRM_MODE_DPMS_ON, "On" },
58 { DRM_MODE_DPMS_STANDBY, "Standby" },
59 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
60 { DRM_MODE_DPMS_OFF, "Off" }
61 };
62
63 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
64
65 /*
66 * Optional properties
67 */
68 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
69 {
70 { DRM_MODE_SCALE_NONE, "None" },
71 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
72 { DRM_MODE_SCALE_CENTER, "Center" },
73 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
74 };
75
76 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
77 {
78 { DRM_MODE_DITHERING_OFF, "Off" },
79 { DRM_MODE_DITHERING_ON, "On" },
80 { DRM_MODE_DITHERING_AUTO, "Automatic" },
81 };
82
83 /*
84 * Non-global properties, but "required" for certain connectors.
85 */
86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
87 {
88 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
89 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
90 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
91 };
92
93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
94
95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
96 {
97 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
98 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
99 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
100 };
101
102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
103 drm_dvi_i_subconnector_enum_list)
104
105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
106 {
107 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
108 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
109 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
110 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
111 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
112 };
113
114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
115
116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
117 {
118 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
123 };
124
125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
126 drm_tv_subconnector_enum_list)
127
128 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
129 { DRM_MODE_DIRTY_OFF, "Off" },
130 { DRM_MODE_DIRTY_ON, "On" },
131 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
132 };
133
134 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
135 drm_dirty_info_enum_list)
136
137 struct drm_conn_prop_enum_list {
138 int type;
139 char *name;
140 int count;
141 };
142
143 /*
144 * Connector and encoder types.
145 */
146 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
147 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
148 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
149 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
150 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
151 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
152 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
153 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
154 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
155 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
156 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
157 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
158 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
159 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
160 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
161 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
162 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
163 };
164
165 static struct drm_prop_enum_list drm_encoder_enum_list[] =
166 { { DRM_MODE_ENCODER_NONE, "None" },
167 { DRM_MODE_ENCODER_DAC, "DAC" },
168 { DRM_MODE_ENCODER_TMDS, "TMDS" },
169 { DRM_MODE_ENCODER_LVDS, "LVDS" },
170 { DRM_MODE_ENCODER_TVDAC, "TV" },
171 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
172 };
173
174 char *drm_get_encoder_name(struct drm_encoder *encoder)
175 {
176 static char buf[32];
177
178 snprintf(buf, 32, "%s-%d",
179 drm_encoder_enum_list[encoder->encoder_type].name,
180 encoder->base.id);
181 return buf;
182 }
183 EXPORT_SYMBOL(drm_get_encoder_name);
184
185 char *drm_get_connector_name(struct drm_connector *connector)
186 {
187 static char buf[32];
188
189 snprintf(buf, 32, "%s-%d",
190 drm_connector_enum_list[connector->connector_type].name,
191 connector->connector_type_id);
192 return buf;
193 }
194 EXPORT_SYMBOL(drm_get_connector_name);
195
196 char *drm_get_connector_status_name(enum drm_connector_status status)
197 {
198 if (status == connector_status_connected)
199 return "connected";
200 else if (status == connector_status_disconnected)
201 return "disconnected";
202 else
203 return "unknown";
204 }
205
206 /**
207 * drm_mode_object_get - allocate a new identifier
208 * @dev: DRM device
209 * @ptr: object pointer, used to generate unique ID
210 * @type: object type
211 *
212 * LOCKING:
213 *
214 * Create a unique identifier based on @ptr in @dev's identifier space. Used
215 * for tracking modes, CRTCs and connectors.
216 *
217 * RETURNS:
218 * New unique (relative to other objects in @dev) integer identifier for the
219 * object.
220 */
221 static int drm_mode_object_get(struct drm_device *dev,
222 struct drm_mode_object *obj, uint32_t obj_type)
223 {
224 int new_id = 0;
225 int ret;
226
227 again:
228 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
229 DRM_ERROR("Ran out memory getting a mode number\n");
230 return -EINVAL;
231 }
232
233 mutex_lock(&dev->mode_config.idr_mutex);
234 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
235 mutex_unlock(&dev->mode_config.idr_mutex);
236 if (ret == -EAGAIN)
237 goto again;
238
239 obj->id = new_id;
240 obj->type = obj_type;
241 return 0;
242 }
243
244 /**
245 * drm_mode_object_put - free an identifer
246 * @dev: DRM device
247 * @id: ID to free
248 *
249 * LOCKING:
250 * Caller must hold DRM mode_config lock.
251 *
252 * Free @id from @dev's unique identifier pool.
253 */
254 static void drm_mode_object_put(struct drm_device *dev,
255 struct drm_mode_object *object)
256 {
257 mutex_lock(&dev->mode_config.idr_mutex);
258 idr_remove(&dev->mode_config.crtc_idr, object->id);
259 mutex_unlock(&dev->mode_config.idr_mutex);
260 }
261
262 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
263 uint32_t id, uint32_t type)
264 {
265 struct drm_mode_object *obj = NULL;
266
267 mutex_lock(&dev->mode_config.idr_mutex);
268 obj = idr_find(&dev->mode_config.crtc_idr, id);
269 if (!obj || (obj->type != type) || (obj->id != id))
270 obj = NULL;
271 mutex_unlock(&dev->mode_config.idr_mutex);
272
273 return obj;
274 }
275 EXPORT_SYMBOL(drm_mode_object_find);
276
277 /**
278 * drm_framebuffer_init - initialize a framebuffer
279 * @dev: DRM device
280 *
281 * LOCKING:
282 * Caller must hold mode config lock.
283 *
284 * Allocates an ID for the framebuffer's parent mode object, sets its mode
285 * functions & device file and adds it to the master fd list.
286 *
287 * RETURNS:
288 * Zero on success, error code on failure.
289 */
290 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
291 const struct drm_framebuffer_funcs *funcs)
292 {
293 int ret;
294
295 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
296 if (ret) {
297 return ret;
298 }
299
300 fb->dev = dev;
301 fb->funcs = funcs;
302 dev->mode_config.num_fb++;
303 list_add(&fb->head, &dev->mode_config.fb_list);
304
305 return 0;
306 }
307 EXPORT_SYMBOL(drm_framebuffer_init);
308
309 /**
310 * drm_framebuffer_cleanup - remove a framebuffer object
311 * @fb: framebuffer to remove
312 *
313 * LOCKING:
314 * Caller must hold mode config lock.
315 *
316 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
317 * it, setting it to NULL.
318 */
319 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
320 {
321 struct drm_device *dev = fb->dev;
322 struct drm_crtc *crtc;
323 struct drm_plane *plane;
324 struct drm_mode_set set;
325 int ret;
326
327 /* remove from any CRTC */
328 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
329 if (crtc->fb == fb) {
330 /* should turn off the crtc */
331 memset(&set, 0, sizeof(struct drm_mode_set));
332 set.crtc = crtc;
333 set.fb = NULL;
334 ret = crtc->funcs->set_config(&set);
335 if (ret)
336 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
337 }
338 }
339
340 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
341 if (plane->fb == fb) {
342 /* should turn off the crtc */
343 ret = plane->funcs->disable_plane(plane);
344 if (ret)
345 DRM_ERROR("failed to disable plane with busy fb\n");
346 /* disconnect the plane from the fb and crtc: */
347 plane->fb = NULL;
348 plane->crtc = NULL;
349 }
350 }
351
352 drm_mode_object_put(dev, &fb->base);
353 list_del(&fb->head);
354 dev->mode_config.num_fb--;
355 }
356 EXPORT_SYMBOL(drm_framebuffer_cleanup);
357
358 /**
359 * drm_crtc_init - Initialise a new CRTC object
360 * @dev: DRM device
361 * @crtc: CRTC object to init
362 * @funcs: callbacks for the new CRTC
363 *
364 * LOCKING:
365 * Caller must hold mode config lock.
366 *
367 * Inits a new object created as base part of an driver crtc object.
368 */
369 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
370 const struct drm_crtc_funcs *funcs)
371 {
372 crtc->dev = dev;
373 crtc->funcs = funcs;
374
375 mutex_lock(&dev->mode_config.mutex);
376 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
377
378 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
379 dev->mode_config.num_crtc++;
380 mutex_unlock(&dev->mode_config.mutex);
381 }
382 EXPORT_SYMBOL(drm_crtc_init);
383
384 /**
385 * drm_crtc_cleanup - Cleans up the core crtc usage.
386 * @crtc: CRTC to cleanup
387 *
388 * LOCKING:
389 * Caller must hold mode config lock.
390 *
391 * Cleanup @crtc. Removes from drm modesetting space
392 * does NOT free object, caller does that.
393 */
394 void drm_crtc_cleanup(struct drm_crtc *crtc)
395 {
396 struct drm_device *dev = crtc->dev;
397
398 if (crtc->gamma_store) {
399 kfree(crtc->gamma_store);
400 crtc->gamma_store = NULL;
401 }
402
403 drm_mode_object_put(dev, &crtc->base);
404 list_del(&crtc->head);
405 dev->mode_config.num_crtc--;
406 }
407 EXPORT_SYMBOL(drm_crtc_cleanup);
408
409 /**
410 * drm_mode_probed_add - add a mode to a connector's probed mode list
411 * @connector: connector the new mode
412 * @mode: mode data
413 *
414 * LOCKING:
415 * Caller must hold mode config lock.
416 *
417 * Add @mode to @connector's mode list for later use.
418 */
419 void drm_mode_probed_add(struct drm_connector *connector,
420 struct drm_display_mode *mode)
421 {
422 list_add(&mode->head, &connector->probed_modes);
423 }
424 EXPORT_SYMBOL(drm_mode_probed_add);
425
426 /**
427 * drm_mode_remove - remove and free a mode
428 * @connector: connector list to modify
429 * @mode: mode to remove
430 *
431 * LOCKING:
432 * Caller must hold mode config lock.
433 *
434 * Remove @mode from @connector's mode list, then free it.
435 */
436 void drm_mode_remove(struct drm_connector *connector,
437 struct drm_display_mode *mode)
438 {
439 list_del(&mode->head);
440 drm_mode_destroy(connector->dev, mode);
441 }
442 EXPORT_SYMBOL(drm_mode_remove);
443
444 /**
445 * drm_connector_init - Init a preallocated connector
446 * @dev: DRM device
447 * @connector: the connector to init
448 * @funcs: callbacks for this connector
449 * @name: user visible name of the connector
450 *
451 * LOCKING:
452 * Takes mode config lock.
453 *
454 * Initialises a preallocated connector. Connectors should be
455 * subclassed as part of driver connector objects.
456 */
457 void drm_connector_init(struct drm_device *dev,
458 struct drm_connector *connector,
459 const struct drm_connector_funcs *funcs,
460 int connector_type)
461 {
462 mutex_lock(&dev->mode_config.mutex);
463
464 connector->dev = dev;
465 connector->funcs = funcs;
466 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
467 connector->connector_type = connector_type;
468 connector->connector_type_id =
469 ++drm_connector_enum_list[connector_type].count; /* TODO */
470 INIT_LIST_HEAD(&connector->user_modes);
471 INIT_LIST_HEAD(&connector->probed_modes);
472 INIT_LIST_HEAD(&connector->modes);
473 connector->edid_blob_ptr = NULL;
474
475 list_add_tail(&connector->head, &dev->mode_config.connector_list);
476 dev->mode_config.num_connector++;
477
478 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
479 drm_connector_attach_property(connector,
480 dev->mode_config.edid_property,
481 0);
482
483 drm_connector_attach_property(connector,
484 dev->mode_config.dpms_property, 0);
485
486 mutex_unlock(&dev->mode_config.mutex);
487 }
488 EXPORT_SYMBOL(drm_connector_init);
489
490 /**
491 * drm_connector_cleanup - cleans up an initialised connector
492 * @connector: connector to cleanup
493 *
494 * LOCKING:
495 * Takes mode config lock.
496 *
497 * Cleans up the connector but doesn't free the object.
498 */
499 void drm_connector_cleanup(struct drm_connector *connector)
500 {
501 struct drm_device *dev = connector->dev;
502 struct drm_display_mode *mode, *t;
503
504 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
505 drm_mode_remove(connector, mode);
506
507 list_for_each_entry_safe(mode, t, &connector->modes, head)
508 drm_mode_remove(connector, mode);
509
510 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
511 drm_mode_remove(connector, mode);
512
513 mutex_lock(&dev->mode_config.mutex);
514 drm_mode_object_put(dev, &connector->base);
515 list_del(&connector->head);
516 dev->mode_config.num_connector--;
517 mutex_unlock(&dev->mode_config.mutex);
518 }
519 EXPORT_SYMBOL(drm_connector_cleanup);
520
521 void drm_encoder_init(struct drm_device *dev,
522 struct drm_encoder *encoder,
523 const struct drm_encoder_funcs *funcs,
524 int encoder_type)
525 {
526 mutex_lock(&dev->mode_config.mutex);
527
528 encoder->dev = dev;
529
530 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
531 encoder->encoder_type = encoder_type;
532 encoder->funcs = funcs;
533
534 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
535 dev->mode_config.num_encoder++;
536
537 mutex_unlock(&dev->mode_config.mutex);
538 }
539 EXPORT_SYMBOL(drm_encoder_init);
540
541 void drm_encoder_cleanup(struct drm_encoder *encoder)
542 {
543 struct drm_device *dev = encoder->dev;
544 mutex_lock(&dev->mode_config.mutex);
545 drm_mode_object_put(dev, &encoder->base);
546 list_del(&encoder->head);
547 dev->mode_config.num_encoder--;
548 mutex_unlock(&dev->mode_config.mutex);
549 }
550 EXPORT_SYMBOL(drm_encoder_cleanup);
551
552 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
553 unsigned long possible_crtcs,
554 const struct drm_plane_funcs *funcs,
555 const uint32_t *formats, uint32_t format_count,
556 bool priv)
557 {
558 mutex_lock(&dev->mode_config.mutex);
559
560 plane->dev = dev;
561 drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
562 plane->funcs = funcs;
563 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
564 GFP_KERNEL);
565 if (!plane->format_types) {
566 DRM_DEBUG_KMS("out of memory when allocating plane\n");
567 drm_mode_object_put(dev, &plane->base);
568 mutex_unlock(&dev->mode_config.mutex);
569 return -ENOMEM;
570 }
571
572 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
573 plane->format_count = format_count;
574 plane->possible_crtcs = possible_crtcs;
575
576 /* private planes are not exposed to userspace, but depending on
577 * display hardware, might be convenient to allow sharing programming
578 * for the scanout engine with the crtc implementation.
579 */
580 if (!priv) {
581 list_add_tail(&plane->head, &dev->mode_config.plane_list);
582 dev->mode_config.num_plane++;
583 } else {
584 INIT_LIST_HEAD(&plane->head);
585 }
586
587 mutex_unlock(&dev->mode_config.mutex);
588
589 return 0;
590 }
591 EXPORT_SYMBOL(drm_plane_init);
592
593 void drm_plane_cleanup(struct drm_plane *plane)
594 {
595 struct drm_device *dev = plane->dev;
596
597 mutex_lock(&dev->mode_config.mutex);
598 kfree(plane->format_types);
599 drm_mode_object_put(dev, &plane->base);
600 /* if not added to a list, it must be a private plane */
601 if (!list_empty(&plane->head)) {
602 list_del(&plane->head);
603 dev->mode_config.num_plane--;
604 }
605 mutex_unlock(&dev->mode_config.mutex);
606 }
607 EXPORT_SYMBOL(drm_plane_cleanup);
608
609 /**
610 * drm_mode_create - create a new display mode
611 * @dev: DRM device
612 *
613 * LOCKING:
614 * Caller must hold DRM mode_config lock.
615 *
616 * Create a new drm_display_mode, give it an ID, and return it.
617 *
618 * RETURNS:
619 * Pointer to new mode on success, NULL on error.
620 */
621 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
622 {
623 struct drm_display_mode *nmode;
624
625 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
626 if (!nmode)
627 return NULL;
628
629 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
630 return nmode;
631 }
632 EXPORT_SYMBOL(drm_mode_create);
633
634 /**
635 * drm_mode_destroy - remove a mode
636 * @dev: DRM device
637 * @mode: mode to remove
638 *
639 * LOCKING:
640 * Caller must hold mode config lock.
641 *
642 * Free @mode's unique identifier, then free it.
643 */
644 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
645 {
646 if (!mode)
647 return;
648
649 drm_mode_object_put(dev, &mode->base);
650
651 kfree(mode);
652 }
653 EXPORT_SYMBOL(drm_mode_destroy);
654
655 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
656 {
657 struct drm_property *edid;
658 struct drm_property *dpms;
659
660 /*
661 * Standard properties (apply to all connectors)
662 */
663 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
664 DRM_MODE_PROP_IMMUTABLE,
665 "EDID", 0);
666 dev->mode_config.edid_property = edid;
667
668 dpms = drm_property_create_enum(dev, 0,
669 "DPMS", drm_dpms_enum_list,
670 ARRAY_SIZE(drm_dpms_enum_list));
671 dev->mode_config.dpms_property = dpms;
672
673 return 0;
674 }
675
676 /**
677 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
678 * @dev: DRM device
679 *
680 * Called by a driver the first time a DVI-I connector is made.
681 */
682 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
683 {
684 struct drm_property *dvi_i_selector;
685 struct drm_property *dvi_i_subconnector;
686
687 if (dev->mode_config.dvi_i_select_subconnector_property)
688 return 0;
689
690 dvi_i_selector =
691 drm_property_create_enum(dev, 0,
692 "select subconnector",
693 drm_dvi_i_select_enum_list,
694 ARRAY_SIZE(drm_dvi_i_select_enum_list));
695 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
696
697 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
698 "subconnector",
699 drm_dvi_i_subconnector_enum_list,
700 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
701 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
702
703 return 0;
704 }
705 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
706
707 /**
708 * drm_create_tv_properties - create TV specific connector properties
709 * @dev: DRM device
710 * @num_modes: number of different TV formats (modes) supported
711 * @modes: array of pointers to strings containing name of each format
712 *
713 * Called by a driver's TV initialization routine, this function creates
714 * the TV specific connector properties for a given device. Caller is
715 * responsible for allocating a list of format names and passing them to
716 * this routine.
717 */
718 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
719 char *modes[])
720 {
721 struct drm_property *tv_selector;
722 struct drm_property *tv_subconnector;
723 int i;
724
725 if (dev->mode_config.tv_select_subconnector_property)
726 return 0;
727
728 /*
729 * Basic connector properties
730 */
731 tv_selector = drm_property_create_enum(dev, 0,
732 "select subconnector",
733 drm_tv_select_enum_list,
734 ARRAY_SIZE(drm_tv_select_enum_list));
735 dev->mode_config.tv_select_subconnector_property = tv_selector;
736
737 tv_subconnector =
738 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
739 "subconnector",
740 drm_tv_subconnector_enum_list,
741 ARRAY_SIZE(drm_tv_subconnector_enum_list));
742 dev->mode_config.tv_subconnector_property = tv_subconnector;
743
744 /*
745 * Other, TV specific properties: margins & TV modes.
746 */
747 dev->mode_config.tv_left_margin_property =
748 drm_property_create_range(dev, 0, "left margin", 0, 100);
749
750 dev->mode_config.tv_right_margin_property =
751 drm_property_create_range(dev, 0, "right margin", 0, 100);
752
753 dev->mode_config.tv_top_margin_property =
754 drm_property_create_range(dev, 0, "top margin", 0, 100);
755
756 dev->mode_config.tv_bottom_margin_property =
757 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
758
759 dev->mode_config.tv_mode_property =
760 drm_property_create(dev, DRM_MODE_PROP_ENUM,
761 "mode", num_modes);
762 for (i = 0; i < num_modes; i++)
763 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
764 i, modes[i]);
765
766 dev->mode_config.tv_brightness_property =
767 drm_property_create_range(dev, 0, "brightness", 0, 100);
768
769 dev->mode_config.tv_contrast_property =
770 drm_property_create_range(dev, 0, "contrast", 0, 100);
771
772 dev->mode_config.tv_flicker_reduction_property =
773 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
774
775 dev->mode_config.tv_overscan_property =
776 drm_property_create_range(dev, 0, "overscan", 0, 100);
777
778 dev->mode_config.tv_saturation_property =
779 drm_property_create_range(dev, 0, "saturation", 0, 100);
780
781 dev->mode_config.tv_hue_property =
782 drm_property_create_range(dev, 0, "hue", 0, 100);
783
784 return 0;
785 }
786 EXPORT_SYMBOL(drm_mode_create_tv_properties);
787
788 /**
789 * drm_mode_create_scaling_mode_property - create scaling mode property
790 * @dev: DRM device
791 *
792 * Called by a driver the first time it's needed, must be attached to desired
793 * connectors.
794 */
795 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
796 {
797 struct drm_property *scaling_mode;
798
799 if (dev->mode_config.scaling_mode_property)
800 return 0;
801
802 scaling_mode =
803 drm_property_create_enum(dev, 0, "scaling mode",
804 drm_scaling_mode_enum_list,
805 ARRAY_SIZE(drm_scaling_mode_enum_list));
806
807 dev->mode_config.scaling_mode_property = scaling_mode;
808
809 return 0;
810 }
811 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
812
813 /**
814 * drm_mode_create_dithering_property - create dithering property
815 * @dev: DRM device
816 *
817 * Called by a driver the first time it's needed, must be attached to desired
818 * connectors.
819 */
820 int drm_mode_create_dithering_property(struct drm_device *dev)
821 {
822 struct drm_property *dithering_mode;
823
824 if (dev->mode_config.dithering_mode_property)
825 return 0;
826
827 dithering_mode =
828 drm_property_create_enum(dev, 0, "dithering",
829 drm_dithering_mode_enum_list,
830 ARRAY_SIZE(drm_dithering_mode_enum_list));
831 dev->mode_config.dithering_mode_property = dithering_mode;
832
833 return 0;
834 }
835 EXPORT_SYMBOL(drm_mode_create_dithering_property);
836
837 /**
838 * drm_mode_create_dirty_property - create dirty property
839 * @dev: DRM device
840 *
841 * Called by a driver the first time it's needed, must be attached to desired
842 * connectors.
843 */
844 int drm_mode_create_dirty_info_property(struct drm_device *dev)
845 {
846 struct drm_property *dirty_info;
847
848 if (dev->mode_config.dirty_info_property)
849 return 0;
850
851 dirty_info =
852 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
853 "dirty",
854 drm_dirty_info_enum_list,
855 ARRAY_SIZE(drm_dirty_info_enum_list));
856 dev->mode_config.dirty_info_property = dirty_info;
857
858 return 0;
859 }
860 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
861
862 /**
863 * drm_mode_config_init - initialize DRM mode_configuration structure
864 * @dev: DRM device
865 *
866 * LOCKING:
867 * None, should happen single threaded at init time.
868 *
869 * Initialize @dev's mode_config structure, used for tracking the graphics
870 * configuration of @dev.
871 */
872 void drm_mode_config_init(struct drm_device *dev)
873 {
874 mutex_init(&dev->mode_config.mutex);
875 mutex_init(&dev->mode_config.idr_mutex);
876 INIT_LIST_HEAD(&dev->mode_config.fb_list);
877 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
878 INIT_LIST_HEAD(&dev->mode_config.connector_list);
879 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
880 INIT_LIST_HEAD(&dev->mode_config.property_list);
881 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
882 INIT_LIST_HEAD(&dev->mode_config.plane_list);
883 idr_init(&dev->mode_config.crtc_idr);
884
885 mutex_lock(&dev->mode_config.mutex);
886 drm_mode_create_standard_connector_properties(dev);
887 mutex_unlock(&dev->mode_config.mutex);
888
889 /* Just to be sure */
890 dev->mode_config.num_fb = 0;
891 dev->mode_config.num_connector = 0;
892 dev->mode_config.num_crtc = 0;
893 dev->mode_config.num_encoder = 0;
894 }
895 EXPORT_SYMBOL(drm_mode_config_init);
896
897 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
898 {
899 uint32_t total_objects = 0;
900
901 total_objects += dev->mode_config.num_crtc;
902 total_objects += dev->mode_config.num_connector;
903 total_objects += dev->mode_config.num_encoder;
904
905 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
906 if (!group->id_list)
907 return -ENOMEM;
908
909 group->num_crtcs = 0;
910 group->num_connectors = 0;
911 group->num_encoders = 0;
912 return 0;
913 }
914
915 int drm_mode_group_init_legacy_group(struct drm_device *dev,
916 struct drm_mode_group *group)
917 {
918 struct drm_crtc *crtc;
919 struct drm_encoder *encoder;
920 struct drm_connector *connector;
921 int ret;
922
923 if ((ret = drm_mode_group_init(dev, group)))
924 return ret;
925
926 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
927 group->id_list[group->num_crtcs++] = crtc->base.id;
928
929 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
930 group->id_list[group->num_crtcs + group->num_encoders++] =
931 encoder->base.id;
932
933 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
934 group->id_list[group->num_crtcs + group->num_encoders +
935 group->num_connectors++] = connector->base.id;
936
937 return 0;
938 }
939
940 /**
941 * drm_mode_config_cleanup - free up DRM mode_config info
942 * @dev: DRM device
943 *
944 * LOCKING:
945 * Caller must hold mode config lock.
946 *
947 * Free up all the connectors and CRTCs associated with this DRM device, then
948 * free up the framebuffers and associated buffer objects.
949 *
950 * FIXME: cleanup any dangling user buffer objects too
951 */
952 void drm_mode_config_cleanup(struct drm_device *dev)
953 {
954 struct drm_connector *connector, *ot;
955 struct drm_crtc *crtc, *ct;
956 struct drm_encoder *encoder, *enct;
957 struct drm_framebuffer *fb, *fbt;
958 struct drm_property *property, *pt;
959 struct drm_plane *plane, *plt;
960
961 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
962 head) {
963 encoder->funcs->destroy(encoder);
964 }
965
966 list_for_each_entry_safe(connector, ot,
967 &dev->mode_config.connector_list, head) {
968 connector->funcs->destroy(connector);
969 }
970
971 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
972 head) {
973 drm_property_destroy(dev, property);
974 }
975
976 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
977 fb->funcs->destroy(fb);
978 }
979
980 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
981 crtc->funcs->destroy(crtc);
982 }
983
984 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
985 head) {
986 plane->funcs->destroy(plane);
987 }
988
989 idr_remove_all(&dev->mode_config.crtc_idr);
990 idr_destroy(&dev->mode_config.crtc_idr);
991 }
992 EXPORT_SYMBOL(drm_mode_config_cleanup);
993
994 /**
995 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
996 * @out: drm_mode_modeinfo struct to return to the user
997 * @in: drm_display_mode to use
998 *
999 * LOCKING:
1000 * None.
1001 *
1002 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1003 * the user.
1004 */
1005 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1006 struct drm_display_mode *in)
1007 {
1008 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1009 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1010 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1011 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1012 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1013 "timing values too large for mode info\n");
1014
1015 out->clock = in->clock;
1016 out->hdisplay = in->hdisplay;
1017 out->hsync_start = in->hsync_start;
1018 out->hsync_end = in->hsync_end;
1019 out->htotal = in->htotal;
1020 out->hskew = in->hskew;
1021 out->vdisplay = in->vdisplay;
1022 out->vsync_start = in->vsync_start;
1023 out->vsync_end = in->vsync_end;
1024 out->vtotal = in->vtotal;
1025 out->vscan = in->vscan;
1026 out->vrefresh = in->vrefresh;
1027 out->flags = in->flags;
1028 out->type = in->type;
1029 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1030 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1031 }
1032
1033 /**
1034 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1035 * @out: drm_display_mode to return to the user
1036 * @in: drm_mode_modeinfo to use
1037 *
1038 * LOCKING:
1039 * None.
1040 *
1041 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1042 * the caller.
1043 *
1044 * RETURNS:
1045 * Zero on success, errno on failure.
1046 */
1047 int drm_crtc_convert_umode(struct drm_display_mode *out,
1048 struct drm_mode_modeinfo *in)
1049 {
1050 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1051 return -ERANGE;
1052
1053 out->clock = in->clock;
1054 out->hdisplay = in->hdisplay;
1055 out->hsync_start = in->hsync_start;
1056 out->hsync_end = in->hsync_end;
1057 out->htotal = in->htotal;
1058 out->hskew = in->hskew;
1059 out->vdisplay = in->vdisplay;
1060 out->vsync_start = in->vsync_start;
1061 out->vsync_end = in->vsync_end;
1062 out->vtotal = in->vtotal;
1063 out->vscan = in->vscan;
1064 out->vrefresh = in->vrefresh;
1065 out->flags = in->flags;
1066 out->type = in->type;
1067 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1068 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1069
1070 return 0;
1071 }
1072
1073 /**
1074 * drm_mode_getresources - get graphics configuration
1075 * @inode: inode from the ioctl
1076 * @filp: file * from the ioctl
1077 * @cmd: cmd from ioctl
1078 * @arg: arg from ioctl
1079 *
1080 * LOCKING:
1081 * Takes mode config lock.
1082 *
1083 * Construct a set of configuration description structures and return
1084 * them to the user, including CRTC, connector and framebuffer configuration.
1085 *
1086 * Called by the user via ioctl.
1087 *
1088 * RETURNS:
1089 * Zero on success, errno on failure.
1090 */
1091 int drm_mode_getresources(struct drm_device *dev, void *data,
1092 struct drm_file *file_priv)
1093 {
1094 struct drm_mode_card_res *card_res = data;
1095 struct list_head *lh;
1096 struct drm_framebuffer *fb;
1097 struct drm_connector *connector;
1098 struct drm_crtc *crtc;
1099 struct drm_encoder *encoder;
1100 int ret = 0;
1101 int connector_count = 0;
1102 int crtc_count = 0;
1103 int fb_count = 0;
1104 int encoder_count = 0;
1105 int copied = 0, i;
1106 uint32_t __user *fb_id;
1107 uint32_t __user *crtc_id;
1108 uint32_t __user *connector_id;
1109 uint32_t __user *encoder_id;
1110 struct drm_mode_group *mode_group;
1111
1112 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1113 return -EINVAL;
1114
1115 mutex_lock(&dev->mode_config.mutex);
1116
1117 /*
1118 * For the non-control nodes we need to limit the list of resources
1119 * by IDs in the group list for this node
1120 */
1121 list_for_each(lh, &file_priv->fbs)
1122 fb_count++;
1123
1124 mode_group = &file_priv->master->minor->mode_group;
1125 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1126
1127 list_for_each(lh, &dev->mode_config.crtc_list)
1128 crtc_count++;
1129
1130 list_for_each(lh, &dev->mode_config.connector_list)
1131 connector_count++;
1132
1133 list_for_each(lh, &dev->mode_config.encoder_list)
1134 encoder_count++;
1135 } else {
1136
1137 crtc_count = mode_group->num_crtcs;
1138 connector_count = mode_group->num_connectors;
1139 encoder_count = mode_group->num_encoders;
1140 }
1141
1142 card_res->max_height = dev->mode_config.max_height;
1143 card_res->min_height = dev->mode_config.min_height;
1144 card_res->max_width = dev->mode_config.max_width;
1145 card_res->min_width = dev->mode_config.min_width;
1146
1147 /* handle this in 4 parts */
1148 /* FBs */
1149 if (card_res->count_fbs >= fb_count) {
1150 copied = 0;
1151 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1152 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1153 if (put_user(fb->base.id, fb_id + copied)) {
1154 ret = -EFAULT;
1155 goto out;
1156 }
1157 copied++;
1158 }
1159 }
1160 card_res->count_fbs = fb_count;
1161
1162 /* CRTCs */
1163 if (card_res->count_crtcs >= crtc_count) {
1164 copied = 0;
1165 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1166 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1167 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1168 head) {
1169 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1170 if (put_user(crtc->base.id, crtc_id + copied)) {
1171 ret = -EFAULT;
1172 goto out;
1173 }
1174 copied++;
1175 }
1176 } else {
1177 for (i = 0; i < mode_group->num_crtcs; i++) {
1178 if (put_user(mode_group->id_list[i],
1179 crtc_id + copied)) {
1180 ret = -EFAULT;
1181 goto out;
1182 }
1183 copied++;
1184 }
1185 }
1186 }
1187 card_res->count_crtcs = crtc_count;
1188
1189 /* Encoders */
1190 if (card_res->count_encoders >= encoder_count) {
1191 copied = 0;
1192 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1193 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1194 list_for_each_entry(encoder,
1195 &dev->mode_config.encoder_list,
1196 head) {
1197 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1198 drm_get_encoder_name(encoder));
1199 if (put_user(encoder->base.id, encoder_id +
1200 copied)) {
1201 ret = -EFAULT;
1202 goto out;
1203 }
1204 copied++;
1205 }
1206 } else {
1207 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1208 if (put_user(mode_group->id_list[i],
1209 encoder_id + copied)) {
1210 ret = -EFAULT;
1211 goto out;
1212 }
1213 copied++;
1214 }
1215
1216 }
1217 }
1218 card_res->count_encoders = encoder_count;
1219
1220 /* Connectors */
1221 if (card_res->count_connectors >= connector_count) {
1222 copied = 0;
1223 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1224 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1225 list_for_each_entry(connector,
1226 &dev->mode_config.connector_list,
1227 head) {
1228 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1229 connector->base.id,
1230 drm_get_connector_name(connector));
1231 if (put_user(connector->base.id,
1232 connector_id + copied)) {
1233 ret = -EFAULT;
1234 goto out;
1235 }
1236 copied++;
1237 }
1238 } else {
1239 int start = mode_group->num_crtcs +
1240 mode_group->num_encoders;
1241 for (i = start; i < start + mode_group->num_connectors; i++) {
1242 if (put_user(mode_group->id_list[i],
1243 connector_id + copied)) {
1244 ret = -EFAULT;
1245 goto out;
1246 }
1247 copied++;
1248 }
1249 }
1250 }
1251 card_res->count_connectors = connector_count;
1252
1253 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1254 card_res->count_connectors, card_res->count_encoders);
1255
1256 out:
1257 mutex_unlock(&dev->mode_config.mutex);
1258 return ret;
1259 }
1260
1261 /**
1262 * drm_mode_getcrtc - get CRTC configuration
1263 * @inode: inode from the ioctl
1264 * @filp: file * from the ioctl
1265 * @cmd: cmd from ioctl
1266 * @arg: arg from ioctl
1267 *
1268 * LOCKING:
1269 * Takes mode config lock.
1270 *
1271 * Construct a CRTC configuration structure to return to the user.
1272 *
1273 * Called by the user via ioctl.
1274 *
1275 * RETURNS:
1276 * Zero on success, errno on failure.
1277 */
1278 int drm_mode_getcrtc(struct drm_device *dev,
1279 void *data, struct drm_file *file_priv)
1280 {
1281 struct drm_mode_crtc *crtc_resp = data;
1282 struct drm_crtc *crtc;
1283 struct drm_mode_object *obj;
1284 int ret = 0;
1285
1286 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1287 return -EINVAL;
1288
1289 mutex_lock(&dev->mode_config.mutex);
1290
1291 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1292 DRM_MODE_OBJECT_CRTC);
1293 if (!obj) {
1294 ret = -EINVAL;
1295 goto out;
1296 }
1297 crtc = obj_to_crtc(obj);
1298
1299 crtc_resp->x = crtc->x;
1300 crtc_resp->y = crtc->y;
1301 crtc_resp->gamma_size = crtc->gamma_size;
1302 if (crtc->fb)
1303 crtc_resp->fb_id = crtc->fb->base.id;
1304 else
1305 crtc_resp->fb_id = 0;
1306
1307 if (crtc->enabled) {
1308
1309 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1310 crtc_resp->mode_valid = 1;
1311
1312 } else {
1313 crtc_resp->mode_valid = 0;
1314 }
1315
1316 out:
1317 mutex_unlock(&dev->mode_config.mutex);
1318 return ret;
1319 }
1320
1321 /**
1322 * drm_mode_getconnector - get connector configuration
1323 * @inode: inode from the ioctl
1324 * @filp: file * from the ioctl
1325 * @cmd: cmd from ioctl
1326 * @arg: arg from ioctl
1327 *
1328 * LOCKING:
1329 * Takes mode config lock.
1330 *
1331 * Construct a connector configuration structure to return to the user.
1332 *
1333 * Called by the user via ioctl.
1334 *
1335 * RETURNS:
1336 * Zero on success, errno on failure.
1337 */
1338 int drm_mode_getconnector(struct drm_device *dev, void *data,
1339 struct drm_file *file_priv)
1340 {
1341 struct drm_mode_get_connector *out_resp = data;
1342 struct drm_mode_object *obj;
1343 struct drm_connector *connector;
1344 struct drm_display_mode *mode;
1345 int mode_count = 0;
1346 int props_count = 0;
1347 int encoders_count = 0;
1348 int ret = 0;
1349 int copied = 0;
1350 int i;
1351 struct drm_mode_modeinfo u_mode;
1352 struct drm_mode_modeinfo __user *mode_ptr;
1353 uint32_t __user *prop_ptr;
1354 uint64_t __user *prop_values;
1355 uint32_t __user *encoder_ptr;
1356
1357 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1358 return -EINVAL;
1359
1360 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1361
1362 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1363
1364 mutex_lock(&dev->mode_config.mutex);
1365
1366 obj = drm_mode_object_find(dev, out_resp->connector_id,
1367 DRM_MODE_OBJECT_CONNECTOR);
1368 if (!obj) {
1369 ret = -EINVAL;
1370 goto out;
1371 }
1372 connector = obj_to_connector(obj);
1373
1374 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1375 if (connector->property_ids[i] != 0) {
1376 props_count++;
1377 }
1378 }
1379
1380 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1381 if (connector->encoder_ids[i] != 0) {
1382 encoders_count++;
1383 }
1384 }
1385
1386 if (out_resp->count_modes == 0) {
1387 connector->funcs->fill_modes(connector,
1388 dev->mode_config.max_width,
1389 dev->mode_config.max_height);
1390 }
1391
1392 /* delayed so we get modes regardless of pre-fill_modes state */
1393 list_for_each_entry(mode, &connector->modes, head)
1394 mode_count++;
1395
1396 out_resp->connector_id = connector->base.id;
1397 out_resp->connector_type = connector->connector_type;
1398 out_resp->connector_type_id = connector->connector_type_id;
1399 out_resp->mm_width = connector->display_info.width_mm;
1400 out_resp->mm_height = connector->display_info.height_mm;
1401 out_resp->subpixel = connector->display_info.subpixel_order;
1402 out_resp->connection = connector->status;
1403 if (connector->encoder)
1404 out_resp->encoder_id = connector->encoder->base.id;
1405 else
1406 out_resp->encoder_id = 0;
1407
1408 /*
1409 * This ioctl is called twice, once to determine how much space is
1410 * needed, and the 2nd time to fill it.
1411 */
1412 if ((out_resp->count_modes >= mode_count) && mode_count) {
1413 copied = 0;
1414 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1415 list_for_each_entry(mode, &connector->modes, head) {
1416 drm_crtc_convert_to_umode(&u_mode, mode);
1417 if (copy_to_user(mode_ptr + copied,
1418 &u_mode, sizeof(u_mode))) {
1419 ret = -EFAULT;
1420 goto out;
1421 }
1422 copied++;
1423 }
1424 }
1425 out_resp->count_modes = mode_count;
1426
1427 if ((out_resp->count_props >= props_count) && props_count) {
1428 copied = 0;
1429 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1430 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1431 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1432 if (connector->property_ids[i] != 0) {
1433 if (put_user(connector->property_ids[i],
1434 prop_ptr + copied)) {
1435 ret = -EFAULT;
1436 goto out;
1437 }
1438
1439 if (put_user(connector->property_values[i],
1440 prop_values + copied)) {
1441 ret = -EFAULT;
1442 goto out;
1443 }
1444 copied++;
1445 }
1446 }
1447 }
1448 out_resp->count_props = props_count;
1449
1450 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1451 copied = 0;
1452 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1453 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1454 if (connector->encoder_ids[i] != 0) {
1455 if (put_user(connector->encoder_ids[i],
1456 encoder_ptr + copied)) {
1457 ret = -EFAULT;
1458 goto out;
1459 }
1460 copied++;
1461 }
1462 }
1463 }
1464 out_resp->count_encoders = encoders_count;
1465
1466 out:
1467 mutex_unlock(&dev->mode_config.mutex);
1468 return ret;
1469 }
1470
1471 int drm_mode_getencoder(struct drm_device *dev, void *data,
1472 struct drm_file *file_priv)
1473 {
1474 struct drm_mode_get_encoder *enc_resp = data;
1475 struct drm_mode_object *obj;
1476 struct drm_encoder *encoder;
1477 int ret = 0;
1478
1479 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1480 return -EINVAL;
1481
1482 mutex_lock(&dev->mode_config.mutex);
1483 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1484 DRM_MODE_OBJECT_ENCODER);
1485 if (!obj) {
1486 ret = -EINVAL;
1487 goto out;
1488 }
1489 encoder = obj_to_encoder(obj);
1490
1491 if (encoder->crtc)
1492 enc_resp->crtc_id = encoder->crtc->base.id;
1493 else
1494 enc_resp->crtc_id = 0;
1495 enc_resp->encoder_type = encoder->encoder_type;
1496 enc_resp->encoder_id = encoder->base.id;
1497 enc_resp->possible_crtcs = encoder->possible_crtcs;
1498 enc_resp->possible_clones = encoder->possible_clones;
1499
1500 out:
1501 mutex_unlock(&dev->mode_config.mutex);
1502 return ret;
1503 }
1504
1505 /**
1506 * drm_mode_getplane_res - get plane info
1507 * @dev: DRM device
1508 * @data: ioctl data
1509 * @file_priv: DRM file info
1510 *
1511 * LOCKING:
1512 * Takes mode config lock.
1513 *
1514 * Return an plane count and set of IDs.
1515 */
1516 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1517 struct drm_file *file_priv)
1518 {
1519 struct drm_mode_get_plane_res *plane_resp = data;
1520 struct drm_mode_config *config;
1521 struct drm_plane *plane;
1522 uint32_t __user *plane_ptr;
1523 int copied = 0, ret = 0;
1524
1525 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1526 return -EINVAL;
1527
1528 mutex_lock(&dev->mode_config.mutex);
1529 config = &dev->mode_config;
1530
1531 /*
1532 * This ioctl is called twice, once to determine how much space is
1533 * needed, and the 2nd time to fill it.
1534 */
1535 if (config->num_plane &&
1536 (plane_resp->count_planes >= config->num_plane)) {
1537 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1538
1539 list_for_each_entry(plane, &config->plane_list, head) {
1540 if (put_user(plane->base.id, plane_ptr + copied)) {
1541 ret = -EFAULT;
1542 goto out;
1543 }
1544 copied++;
1545 }
1546 }
1547 plane_resp->count_planes = config->num_plane;
1548
1549 out:
1550 mutex_unlock(&dev->mode_config.mutex);
1551 return ret;
1552 }
1553
1554 /**
1555 * drm_mode_getplane - get plane info
1556 * @dev: DRM device
1557 * @data: ioctl data
1558 * @file_priv: DRM file info
1559 *
1560 * LOCKING:
1561 * Takes mode config lock.
1562 *
1563 * Return plane info, including formats supported, gamma size, any
1564 * current fb, etc.
1565 */
1566 int drm_mode_getplane(struct drm_device *dev, void *data,
1567 struct drm_file *file_priv)
1568 {
1569 struct drm_mode_get_plane *plane_resp = data;
1570 struct drm_mode_object *obj;
1571 struct drm_plane *plane;
1572 uint32_t __user *format_ptr;
1573 int ret = 0;
1574
1575 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1576 return -EINVAL;
1577
1578 mutex_lock(&dev->mode_config.mutex);
1579 obj = drm_mode_object_find(dev, plane_resp->plane_id,
1580 DRM_MODE_OBJECT_PLANE);
1581 if (!obj) {
1582 ret = -ENOENT;
1583 goto out;
1584 }
1585 plane = obj_to_plane(obj);
1586
1587 if (plane->crtc)
1588 plane_resp->crtc_id = plane->crtc->base.id;
1589 else
1590 plane_resp->crtc_id = 0;
1591
1592 if (plane->fb)
1593 plane_resp->fb_id = plane->fb->base.id;
1594 else
1595 plane_resp->fb_id = 0;
1596
1597 plane_resp->plane_id = plane->base.id;
1598 plane_resp->possible_crtcs = plane->possible_crtcs;
1599 plane_resp->gamma_size = plane->gamma_size;
1600
1601 /*
1602 * This ioctl is called twice, once to determine how much space is
1603 * needed, and the 2nd time to fill it.
1604 */
1605 if (plane->format_count &&
1606 (plane_resp->count_format_types >= plane->format_count)) {
1607 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
1608 if (copy_to_user(format_ptr,
1609 plane->format_types,
1610 sizeof(uint32_t) * plane->format_count)) {
1611 ret = -EFAULT;
1612 goto out;
1613 }
1614 }
1615 plane_resp->count_format_types = plane->format_count;
1616
1617 out:
1618 mutex_unlock(&dev->mode_config.mutex);
1619 return ret;
1620 }
1621
1622 /**
1623 * drm_mode_setplane - set up or tear down an plane
1624 * @dev: DRM device
1625 * @data: ioctl data*
1626 * @file_prive: DRM file info
1627 *
1628 * LOCKING:
1629 * Takes mode config lock.
1630 *
1631 * Set plane info, including placement, fb, scaling, and other factors.
1632 * Or pass a NULL fb to disable.
1633 */
1634 int drm_mode_setplane(struct drm_device *dev, void *data,
1635 struct drm_file *file_priv)
1636 {
1637 struct drm_mode_set_plane *plane_req = data;
1638 struct drm_mode_object *obj;
1639 struct drm_plane *plane;
1640 struct drm_crtc *crtc;
1641 struct drm_framebuffer *fb;
1642 int ret = 0;
1643 unsigned int fb_width, fb_height;
1644 int i;
1645
1646 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1647 return -EINVAL;
1648
1649 mutex_lock(&dev->mode_config.mutex);
1650
1651 /*
1652 * First, find the plane, crtc, and fb objects. If not available,
1653 * we don't bother to call the driver.
1654 */
1655 obj = drm_mode_object_find(dev, plane_req->plane_id,
1656 DRM_MODE_OBJECT_PLANE);
1657 if (!obj) {
1658 DRM_DEBUG_KMS("Unknown plane ID %d\n",
1659 plane_req->plane_id);
1660 ret = -ENOENT;
1661 goto out;
1662 }
1663 plane = obj_to_plane(obj);
1664
1665 /* No fb means shut it down */
1666 if (!plane_req->fb_id) {
1667 plane->funcs->disable_plane(plane);
1668 plane->crtc = NULL;
1669 plane->fb = NULL;
1670 goto out;
1671 }
1672
1673 obj = drm_mode_object_find(dev, plane_req->crtc_id,
1674 DRM_MODE_OBJECT_CRTC);
1675 if (!obj) {
1676 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
1677 plane_req->crtc_id);
1678 ret = -ENOENT;
1679 goto out;
1680 }
1681 crtc = obj_to_crtc(obj);
1682
1683 obj = drm_mode_object_find(dev, plane_req->fb_id,
1684 DRM_MODE_OBJECT_FB);
1685 if (!obj) {
1686 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
1687 plane_req->fb_id);
1688 ret = -ENOENT;
1689 goto out;
1690 }
1691 fb = obj_to_fb(obj);
1692
1693 /* Check whether this plane supports the fb pixel format. */
1694 for (i = 0; i < plane->format_count; i++)
1695 if (fb->pixel_format == plane->format_types[i])
1696 break;
1697 if (i == plane->format_count) {
1698 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
1699 ret = -EINVAL;
1700 goto out;
1701 }
1702
1703 fb_width = fb->width << 16;
1704 fb_height = fb->height << 16;
1705
1706 /* Make sure source coordinates are inside the fb. */
1707 if (plane_req->src_w > fb_width ||
1708 plane_req->src_x > fb_width - plane_req->src_w ||
1709 plane_req->src_h > fb_height ||
1710 plane_req->src_y > fb_height - plane_req->src_h) {
1711 DRM_DEBUG_KMS("Invalid source coordinates "
1712 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
1713 plane_req->src_w >> 16,
1714 ((plane_req->src_w & 0xffff) * 15625) >> 10,
1715 plane_req->src_h >> 16,
1716 ((plane_req->src_h & 0xffff) * 15625) >> 10,
1717 plane_req->src_x >> 16,
1718 ((plane_req->src_x & 0xffff) * 15625) >> 10,
1719 plane_req->src_y >> 16,
1720 ((plane_req->src_y & 0xffff) * 15625) >> 10);
1721 ret = -ENOSPC;
1722 goto out;
1723 }
1724
1725 /* Give drivers some help against integer overflows */
1726 if (plane_req->crtc_w > INT_MAX ||
1727 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
1728 plane_req->crtc_h > INT_MAX ||
1729 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
1730 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
1731 plane_req->crtc_w, plane_req->crtc_h,
1732 plane_req->crtc_x, plane_req->crtc_y);
1733 ret = -ERANGE;
1734 goto out;
1735 }
1736
1737 ret = plane->funcs->update_plane(plane, crtc, fb,
1738 plane_req->crtc_x, plane_req->crtc_y,
1739 plane_req->crtc_w, plane_req->crtc_h,
1740 plane_req->src_x, plane_req->src_y,
1741 plane_req->src_w, plane_req->src_h);
1742 if (!ret) {
1743 plane->crtc = crtc;
1744 plane->fb = fb;
1745 }
1746
1747 out:
1748 mutex_unlock(&dev->mode_config.mutex);
1749
1750 return ret;
1751 }
1752
1753 /**
1754 * drm_mode_setcrtc - set CRTC configuration
1755 * @inode: inode from the ioctl
1756 * @filp: file * from the ioctl
1757 * @cmd: cmd from ioctl
1758 * @arg: arg from ioctl
1759 *
1760 * LOCKING:
1761 * Takes mode config lock.
1762 *
1763 * Build a new CRTC configuration based on user request.
1764 *
1765 * Called by the user via ioctl.
1766 *
1767 * RETURNS:
1768 * Zero on success, errno on failure.
1769 */
1770 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1771 struct drm_file *file_priv)
1772 {
1773 struct drm_mode_config *config = &dev->mode_config;
1774 struct drm_mode_crtc *crtc_req = data;
1775 struct drm_mode_object *obj;
1776 struct drm_crtc *crtc;
1777 struct drm_connector **connector_set = NULL, *connector;
1778 struct drm_framebuffer *fb = NULL;
1779 struct drm_display_mode *mode = NULL;
1780 struct drm_mode_set set;
1781 uint32_t __user *set_connectors_ptr;
1782 int ret = 0;
1783 int i;
1784
1785 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1786 return -EINVAL;
1787
1788 /* For some reason crtc x/y offsets are signed internally. */
1789 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
1790 return -ERANGE;
1791
1792 mutex_lock(&dev->mode_config.mutex);
1793 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1794 DRM_MODE_OBJECT_CRTC);
1795 if (!obj) {
1796 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1797 ret = -EINVAL;
1798 goto out;
1799 }
1800 crtc = obj_to_crtc(obj);
1801 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1802
1803 if (crtc_req->mode_valid) {
1804 /* If we have a mode we need a framebuffer. */
1805 /* If we pass -1, set the mode with the currently bound fb */
1806 if (crtc_req->fb_id == -1) {
1807 if (!crtc->fb) {
1808 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
1809 ret = -EINVAL;
1810 goto out;
1811 }
1812 fb = crtc->fb;
1813 } else {
1814 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1815 DRM_MODE_OBJECT_FB);
1816 if (!obj) {
1817 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1818 crtc_req->fb_id);
1819 ret = -EINVAL;
1820 goto out;
1821 }
1822 fb = obj_to_fb(obj);
1823 }
1824
1825 mode = drm_mode_create(dev);
1826 if (!mode) {
1827 ret = -ENOMEM;
1828 goto out;
1829 }
1830
1831 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
1832 if (ret) {
1833 DRM_DEBUG_KMS("Invalid mode\n");
1834 goto out;
1835 }
1836
1837 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1838 }
1839
1840 if (crtc_req->count_connectors == 0 && mode) {
1841 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1842 ret = -EINVAL;
1843 goto out;
1844 }
1845
1846 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1847 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1848 crtc_req->count_connectors);
1849 ret = -EINVAL;
1850 goto out;
1851 }
1852
1853 if (crtc_req->count_connectors > 0) {
1854 u32 out_id;
1855
1856 /* Avoid unbounded kernel memory allocation */
1857 if (crtc_req->count_connectors > config->num_connector) {
1858 ret = -EINVAL;
1859 goto out;
1860 }
1861
1862 connector_set = kmalloc(crtc_req->count_connectors *
1863 sizeof(struct drm_connector *),
1864 GFP_KERNEL);
1865 if (!connector_set) {
1866 ret = -ENOMEM;
1867 goto out;
1868 }
1869
1870 for (i = 0; i < crtc_req->count_connectors; i++) {
1871 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
1872 if (get_user(out_id, &set_connectors_ptr[i])) {
1873 ret = -EFAULT;
1874 goto out;
1875 }
1876
1877 obj = drm_mode_object_find(dev, out_id,
1878 DRM_MODE_OBJECT_CONNECTOR);
1879 if (!obj) {
1880 DRM_DEBUG_KMS("Connector id %d unknown\n",
1881 out_id);
1882 ret = -EINVAL;
1883 goto out;
1884 }
1885 connector = obj_to_connector(obj);
1886 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1887 connector->base.id,
1888 drm_get_connector_name(connector));
1889
1890 connector_set[i] = connector;
1891 }
1892 }
1893
1894 set.crtc = crtc;
1895 set.x = crtc_req->x;
1896 set.y = crtc_req->y;
1897 set.mode = mode;
1898 set.connectors = connector_set;
1899 set.num_connectors = crtc_req->count_connectors;
1900 set.fb = fb;
1901 ret = crtc->funcs->set_config(&set);
1902
1903 out:
1904 kfree(connector_set);
1905 drm_mode_destroy(dev, mode);
1906 mutex_unlock(&dev->mode_config.mutex);
1907 return ret;
1908 }
1909
1910 int drm_mode_cursor_ioctl(struct drm_device *dev,
1911 void *data, struct drm_file *file_priv)
1912 {
1913 struct drm_mode_cursor *req = data;
1914 struct drm_mode_object *obj;
1915 struct drm_crtc *crtc;
1916 int ret = 0;
1917
1918 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1919 return -EINVAL;
1920
1921 if (!req->flags)
1922 return -EINVAL;
1923
1924 mutex_lock(&dev->mode_config.mutex);
1925 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1926 if (!obj) {
1927 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1928 ret = -EINVAL;
1929 goto out;
1930 }
1931 crtc = obj_to_crtc(obj);
1932
1933 if (req->flags & DRM_MODE_CURSOR_BO) {
1934 if (!crtc->funcs->cursor_set) {
1935 ret = -ENXIO;
1936 goto out;
1937 }
1938 /* Turns off the cursor if handle is 0 */
1939 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1940 req->width, req->height);
1941 }
1942
1943 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1944 if (crtc->funcs->cursor_move) {
1945 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1946 } else {
1947 ret = -EFAULT;
1948 goto out;
1949 }
1950 }
1951 out:
1952 mutex_unlock(&dev->mode_config.mutex);
1953 return ret;
1954 }
1955
1956 /* Original addfb only supported RGB formats, so figure out which one */
1957 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
1958 {
1959 uint32_t fmt;
1960
1961 switch (bpp) {
1962 case 8:
1963 fmt = DRM_FORMAT_RGB332;
1964 break;
1965 case 16:
1966 if (depth == 15)
1967 fmt = DRM_FORMAT_XRGB1555;
1968 else
1969 fmt = DRM_FORMAT_RGB565;
1970 break;
1971 case 24:
1972 fmt = DRM_FORMAT_RGB888;
1973 break;
1974 case 32:
1975 if (depth == 24)
1976 fmt = DRM_FORMAT_XRGB8888;
1977 else if (depth == 30)
1978 fmt = DRM_FORMAT_XRGB2101010;
1979 else
1980 fmt = DRM_FORMAT_ARGB8888;
1981 break;
1982 default:
1983 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
1984 fmt = DRM_FORMAT_XRGB8888;
1985 break;
1986 }
1987
1988 return fmt;
1989 }
1990 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
1991
1992 /**
1993 * drm_mode_addfb - add an FB to the graphics configuration
1994 * @inode: inode from the ioctl
1995 * @filp: file * from the ioctl
1996 * @cmd: cmd from ioctl
1997 * @arg: arg from ioctl
1998 *
1999 * LOCKING:
2000 * Takes mode config lock.
2001 *
2002 * Add a new FB to the specified CRTC, given a user request.
2003 *
2004 * Called by the user via ioctl.
2005 *
2006 * RETURNS:
2007 * Zero on success, errno on failure.
2008 */
2009 int drm_mode_addfb(struct drm_device *dev,
2010 void *data, struct drm_file *file_priv)
2011 {
2012 struct drm_mode_fb_cmd *or = data;
2013 struct drm_mode_fb_cmd2 r = {};
2014 struct drm_mode_config *config = &dev->mode_config;
2015 struct drm_framebuffer *fb;
2016 int ret = 0;
2017
2018 /* Use new struct with format internally */
2019 r.fb_id = or->fb_id;
2020 r.width = or->width;
2021 r.height = or->height;
2022 r.pitches[0] = or->pitch;
2023 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2024 r.handles[0] = or->handle;
2025
2026 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2027 return -EINVAL;
2028
2029 if ((config->min_width > r.width) || (r.width > config->max_width))
2030 return -EINVAL;
2031
2032 if ((config->min_height > r.height) || (r.height > config->max_height))
2033 return -EINVAL;
2034
2035 mutex_lock(&dev->mode_config.mutex);
2036
2037 /* TODO check buffer is sufficiently large */
2038 /* TODO setup destructor callback */
2039
2040 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2041 if (IS_ERR(fb)) {
2042 DRM_ERROR("could not create framebuffer\n");
2043 ret = PTR_ERR(fb);
2044 goto out;
2045 }
2046
2047 or->fb_id = fb->base.id;
2048 list_add(&fb->filp_head, &file_priv->fbs);
2049 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2050
2051 out:
2052 mutex_unlock(&dev->mode_config.mutex);
2053 return ret;
2054 }
2055
2056 static int format_check(struct drm_mode_fb_cmd2 *r)
2057 {
2058 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2059
2060 switch (format) {
2061 case DRM_FORMAT_C8:
2062 case DRM_FORMAT_RGB332:
2063 case DRM_FORMAT_BGR233:
2064 case DRM_FORMAT_XRGB4444:
2065 case DRM_FORMAT_XBGR4444:
2066 case DRM_FORMAT_RGBX4444:
2067 case DRM_FORMAT_BGRX4444:
2068 case DRM_FORMAT_ARGB4444:
2069 case DRM_FORMAT_ABGR4444:
2070 case DRM_FORMAT_RGBA4444:
2071 case DRM_FORMAT_BGRA4444:
2072 case DRM_FORMAT_XRGB1555:
2073 case DRM_FORMAT_XBGR1555:
2074 case DRM_FORMAT_RGBX5551:
2075 case DRM_FORMAT_BGRX5551:
2076 case DRM_FORMAT_ARGB1555:
2077 case DRM_FORMAT_ABGR1555:
2078 case DRM_FORMAT_RGBA5551:
2079 case DRM_FORMAT_BGRA5551:
2080 case DRM_FORMAT_RGB565:
2081 case DRM_FORMAT_BGR565:
2082 case DRM_FORMAT_RGB888:
2083 case DRM_FORMAT_BGR888:
2084 case DRM_FORMAT_XRGB8888:
2085 case DRM_FORMAT_XBGR8888:
2086 case DRM_FORMAT_RGBX8888:
2087 case DRM_FORMAT_BGRX8888:
2088 case DRM_FORMAT_ARGB8888:
2089 case DRM_FORMAT_ABGR8888:
2090 case DRM_FORMAT_RGBA8888:
2091 case DRM_FORMAT_BGRA8888:
2092 case DRM_FORMAT_XRGB2101010:
2093 case DRM_FORMAT_XBGR2101010:
2094 case DRM_FORMAT_RGBX1010102:
2095 case DRM_FORMAT_BGRX1010102:
2096 case DRM_FORMAT_ARGB2101010:
2097 case DRM_FORMAT_ABGR2101010:
2098 case DRM_FORMAT_RGBA1010102:
2099 case DRM_FORMAT_BGRA1010102:
2100 case DRM_FORMAT_YUYV:
2101 case DRM_FORMAT_YVYU:
2102 case DRM_FORMAT_UYVY:
2103 case DRM_FORMAT_VYUY:
2104 case DRM_FORMAT_AYUV:
2105 case DRM_FORMAT_NV12:
2106 case DRM_FORMAT_NV21:
2107 case DRM_FORMAT_NV16:
2108 case DRM_FORMAT_NV61:
2109 case DRM_FORMAT_YUV410:
2110 case DRM_FORMAT_YVU410:
2111 case DRM_FORMAT_YUV411:
2112 case DRM_FORMAT_YVU411:
2113 case DRM_FORMAT_YUV420:
2114 case DRM_FORMAT_YVU420:
2115 case DRM_FORMAT_YUV422:
2116 case DRM_FORMAT_YVU422:
2117 case DRM_FORMAT_YUV444:
2118 case DRM_FORMAT_YVU444:
2119 return 0;
2120 default:
2121 return -EINVAL;
2122 }
2123 }
2124
2125 /**
2126 * drm_mode_addfb2 - add an FB to the graphics configuration
2127 * @inode: inode from the ioctl
2128 * @filp: file * from the ioctl
2129 * @cmd: cmd from ioctl
2130 * @arg: arg from ioctl
2131 *
2132 * LOCKING:
2133 * Takes mode config lock.
2134 *
2135 * Add a new FB to the specified CRTC, given a user request with format.
2136 *
2137 * Called by the user via ioctl.
2138 *
2139 * RETURNS:
2140 * Zero on success, errno on failure.
2141 */
2142 int drm_mode_addfb2(struct drm_device *dev,
2143 void *data, struct drm_file *file_priv)
2144 {
2145 struct drm_mode_fb_cmd2 *r = data;
2146 struct drm_mode_config *config = &dev->mode_config;
2147 struct drm_framebuffer *fb;
2148 int ret = 0;
2149
2150 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2151 return -EINVAL;
2152
2153 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2154 DRM_ERROR("bad framebuffer width %d, should be >= %d && <= %d\n",
2155 r->width, config->min_width, config->max_width);
2156 return -EINVAL;
2157 }
2158 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2159 DRM_ERROR("bad framebuffer height %d, should be >= %d && <= %d\n",
2160 r->height, config->min_height, config->max_height);
2161 return -EINVAL;
2162 }
2163
2164 ret = format_check(r);
2165 if (ret) {
2166 DRM_ERROR("bad framebuffer format 0x%08x\n", r->pixel_format);
2167 return ret;
2168 }
2169
2170 mutex_lock(&dev->mode_config.mutex);
2171
2172 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2173 if (IS_ERR(fb)) {
2174 DRM_ERROR("could not create framebuffer\n");
2175 ret = PTR_ERR(fb);
2176 goto out;
2177 }
2178
2179 r->fb_id = fb->base.id;
2180 list_add(&fb->filp_head, &file_priv->fbs);
2181 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2182
2183 out:
2184 mutex_unlock(&dev->mode_config.mutex);
2185 return ret;
2186 }
2187
2188 /**
2189 * drm_mode_rmfb - remove an FB from the configuration
2190 * @inode: inode from the ioctl
2191 * @filp: file * from the ioctl
2192 * @cmd: cmd from ioctl
2193 * @arg: arg from ioctl
2194 *
2195 * LOCKING:
2196 * Takes mode config lock.
2197 *
2198 * Remove the FB specified by the user.
2199 *
2200 * Called by the user via ioctl.
2201 *
2202 * RETURNS:
2203 * Zero on success, errno on failure.
2204 */
2205 int drm_mode_rmfb(struct drm_device *dev,
2206 void *data, struct drm_file *file_priv)
2207 {
2208 struct drm_mode_object *obj;
2209 struct drm_framebuffer *fb = NULL;
2210 struct drm_framebuffer *fbl = NULL;
2211 uint32_t *id = data;
2212 int ret = 0;
2213 int found = 0;
2214
2215 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2216 return -EINVAL;
2217
2218 mutex_lock(&dev->mode_config.mutex);
2219 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
2220 /* TODO check that we really get a framebuffer back. */
2221 if (!obj) {
2222 ret = -EINVAL;
2223 goto out;
2224 }
2225 fb = obj_to_fb(obj);
2226
2227 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2228 if (fb == fbl)
2229 found = 1;
2230
2231 if (!found) {
2232 ret = -EINVAL;
2233 goto out;
2234 }
2235
2236 /* TODO release all crtc connected to the framebuffer */
2237 /* TODO unhock the destructor from the buffer object */
2238
2239 list_del(&fb->filp_head);
2240 fb->funcs->destroy(fb);
2241
2242 out:
2243 mutex_unlock(&dev->mode_config.mutex);
2244 return ret;
2245 }
2246
2247 /**
2248 * drm_mode_getfb - get FB info
2249 * @inode: inode from the ioctl
2250 * @filp: file * from the ioctl
2251 * @cmd: cmd from ioctl
2252 * @arg: arg from ioctl
2253 *
2254 * LOCKING:
2255 * Takes mode config lock.
2256 *
2257 * Lookup the FB given its ID and return info about it.
2258 *
2259 * Called by the user via ioctl.
2260 *
2261 * RETURNS:
2262 * Zero on success, errno on failure.
2263 */
2264 int drm_mode_getfb(struct drm_device *dev,
2265 void *data, struct drm_file *file_priv)
2266 {
2267 struct drm_mode_fb_cmd *r = data;
2268 struct drm_mode_object *obj;
2269 struct drm_framebuffer *fb;
2270 int ret = 0;
2271
2272 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2273 return -EINVAL;
2274
2275 mutex_lock(&dev->mode_config.mutex);
2276 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2277 if (!obj) {
2278 ret = -EINVAL;
2279 goto out;
2280 }
2281 fb = obj_to_fb(obj);
2282
2283 r->height = fb->height;
2284 r->width = fb->width;
2285 r->depth = fb->depth;
2286 r->bpp = fb->bits_per_pixel;
2287 r->pitch = fb->pitches[0];
2288 fb->funcs->create_handle(fb, file_priv, &r->handle);
2289
2290 out:
2291 mutex_unlock(&dev->mode_config.mutex);
2292 return ret;
2293 }
2294
2295 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2296 void *data, struct drm_file *file_priv)
2297 {
2298 struct drm_clip_rect __user *clips_ptr;
2299 struct drm_clip_rect *clips = NULL;
2300 struct drm_mode_fb_dirty_cmd *r = data;
2301 struct drm_mode_object *obj;
2302 struct drm_framebuffer *fb;
2303 unsigned flags;
2304 int num_clips;
2305 int ret = 0;
2306
2307 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2308 return -EINVAL;
2309
2310 mutex_lock(&dev->mode_config.mutex);
2311 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2312 if (!obj) {
2313 ret = -EINVAL;
2314 goto out_err1;
2315 }
2316 fb = obj_to_fb(obj);
2317
2318 num_clips = r->num_clips;
2319 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2320
2321 if (!num_clips != !clips_ptr) {
2322 ret = -EINVAL;
2323 goto out_err1;
2324 }
2325
2326 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2327
2328 /* If userspace annotates copy, clips must come in pairs */
2329 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2330 ret = -EINVAL;
2331 goto out_err1;
2332 }
2333
2334 if (num_clips && clips_ptr) {
2335 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2336 ret = -EINVAL;
2337 goto out_err1;
2338 }
2339 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2340 if (!clips) {
2341 ret = -ENOMEM;
2342 goto out_err1;
2343 }
2344
2345 ret = copy_from_user(clips, clips_ptr,
2346 num_clips * sizeof(*clips));
2347 if (ret) {
2348 ret = -EFAULT;
2349 goto out_err2;
2350 }
2351 }
2352
2353 if (fb->funcs->dirty) {
2354 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2355 clips, num_clips);
2356 } else {
2357 ret = -ENOSYS;
2358 goto out_err2;
2359 }
2360
2361 out_err2:
2362 kfree(clips);
2363 out_err1:
2364 mutex_unlock(&dev->mode_config.mutex);
2365 return ret;
2366 }
2367
2368
2369 /**
2370 * drm_fb_release - remove and free the FBs on this file
2371 * @filp: file * from the ioctl
2372 *
2373 * LOCKING:
2374 * Takes mode config lock.
2375 *
2376 * Destroy all the FBs associated with @filp.
2377 *
2378 * Called by the user via ioctl.
2379 *
2380 * RETURNS:
2381 * Zero on success, errno on failure.
2382 */
2383 void drm_fb_release(struct drm_file *priv)
2384 {
2385 struct drm_device *dev = priv->minor->dev;
2386 struct drm_framebuffer *fb, *tfb;
2387
2388 mutex_lock(&dev->mode_config.mutex);
2389 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2390 list_del(&fb->filp_head);
2391 fb->funcs->destroy(fb);
2392 }
2393 mutex_unlock(&dev->mode_config.mutex);
2394 }
2395
2396 /**
2397 * drm_mode_attachmode - add a mode to the user mode list
2398 * @dev: DRM device
2399 * @connector: connector to add the mode to
2400 * @mode: mode to add
2401 *
2402 * Add @mode to @connector's user mode list.
2403 */
2404 static void drm_mode_attachmode(struct drm_device *dev,
2405 struct drm_connector *connector,
2406 struct drm_display_mode *mode)
2407 {
2408 list_add_tail(&mode->head, &connector->user_modes);
2409 }
2410
2411 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
2412 struct drm_display_mode *mode)
2413 {
2414 struct drm_connector *connector;
2415 struct drm_display_mode *dup_mode;
2416 int need_dup = 0;
2417 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2418 if (!connector->encoder)
2419 break;
2420 if (connector->encoder->crtc == crtc) {
2421 if (need_dup)
2422 dup_mode = drm_mode_duplicate(dev, mode);
2423 else
2424 dup_mode = mode;
2425 drm_mode_attachmode(dev, connector, dup_mode);
2426 need_dup = 1;
2427 }
2428 }
2429 return 0;
2430 }
2431 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2432
2433 static int drm_mode_detachmode(struct drm_device *dev,
2434 struct drm_connector *connector,
2435 struct drm_display_mode *mode)
2436 {
2437 int found = 0;
2438 int ret = 0;
2439 struct drm_display_mode *match_mode, *t;
2440
2441 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
2442 if (drm_mode_equal(match_mode, mode)) {
2443 list_del(&match_mode->head);
2444 drm_mode_destroy(dev, match_mode);
2445 found = 1;
2446 break;
2447 }
2448 }
2449
2450 if (!found)
2451 ret = -EINVAL;
2452
2453 return ret;
2454 }
2455
2456 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2457 {
2458 struct drm_connector *connector;
2459
2460 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2461 drm_mode_detachmode(dev, connector, mode);
2462 }
2463 return 0;
2464 }
2465 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2466
2467 /**
2468 * drm_fb_attachmode - Attach a user mode to an connector
2469 * @inode: inode from the ioctl
2470 * @filp: file * from the ioctl
2471 * @cmd: cmd from ioctl
2472 * @arg: arg from ioctl
2473 *
2474 * This attaches a user specified mode to an connector.
2475 * Called by the user via ioctl.
2476 *
2477 * RETURNS:
2478 * Zero on success, errno on failure.
2479 */
2480 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2481 void *data, struct drm_file *file_priv)
2482 {
2483 struct drm_mode_mode_cmd *mode_cmd = data;
2484 struct drm_connector *connector;
2485 struct drm_display_mode *mode;
2486 struct drm_mode_object *obj;
2487 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2488 int ret = 0;
2489
2490 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2491 return -EINVAL;
2492
2493 mutex_lock(&dev->mode_config.mutex);
2494
2495 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2496 if (!obj) {
2497 ret = -EINVAL;
2498 goto out;
2499 }
2500 connector = obj_to_connector(obj);
2501
2502 mode = drm_mode_create(dev);
2503 if (!mode) {
2504 ret = -ENOMEM;
2505 goto out;
2506 }
2507
2508 ret = drm_crtc_convert_umode(mode, umode);
2509 if (ret) {
2510 DRM_DEBUG_KMS("Invalid mode\n");
2511 drm_mode_destroy(dev, mode);
2512 goto out;
2513 }
2514
2515 drm_mode_attachmode(dev, connector, mode);
2516 out:
2517 mutex_unlock(&dev->mode_config.mutex);
2518 return ret;
2519 }
2520
2521
2522 /**
2523 * drm_fb_detachmode - Detach a user specified mode from an connector
2524 * @inode: inode from the ioctl
2525 * @filp: file * from the ioctl
2526 * @cmd: cmd from ioctl
2527 * @arg: arg from ioctl
2528 *
2529 * Called by the user via ioctl.
2530 *
2531 * RETURNS:
2532 * Zero on success, errno on failure.
2533 */
2534 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2535 void *data, struct drm_file *file_priv)
2536 {
2537 struct drm_mode_object *obj;
2538 struct drm_mode_mode_cmd *mode_cmd = data;
2539 struct drm_connector *connector;
2540 struct drm_display_mode mode;
2541 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2542 int ret = 0;
2543
2544 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2545 return -EINVAL;
2546
2547 mutex_lock(&dev->mode_config.mutex);
2548
2549 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2550 if (!obj) {
2551 ret = -EINVAL;
2552 goto out;
2553 }
2554 connector = obj_to_connector(obj);
2555
2556 ret = drm_crtc_convert_umode(&mode, umode);
2557 if (ret) {
2558 DRM_DEBUG_KMS("Invalid mode\n");
2559 goto out;
2560 }
2561
2562 ret = drm_mode_detachmode(dev, connector, &mode);
2563 out:
2564 mutex_unlock(&dev->mode_config.mutex);
2565 return ret;
2566 }
2567
2568 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2569 const char *name, int num_values)
2570 {
2571 struct drm_property *property = NULL;
2572
2573 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2574 if (!property)
2575 return NULL;
2576
2577 if (num_values) {
2578 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2579 if (!property->values)
2580 goto fail;
2581 }
2582
2583 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2584 property->flags = flags;
2585 property->num_values = num_values;
2586 INIT_LIST_HEAD(&property->enum_blob_list);
2587
2588 if (name) {
2589 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2590 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2591 }
2592
2593 list_add_tail(&property->head, &dev->mode_config.property_list);
2594 return property;
2595 fail:
2596 kfree(property);
2597 return NULL;
2598 }
2599 EXPORT_SYMBOL(drm_property_create);
2600
2601 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
2602 const char *name,
2603 const struct drm_prop_enum_list *props,
2604 int num_values)
2605 {
2606 struct drm_property *property;
2607 int i, ret;
2608
2609 flags |= DRM_MODE_PROP_ENUM;
2610
2611 property = drm_property_create(dev, flags, name, num_values);
2612 if (!property)
2613 return NULL;
2614
2615 for (i = 0; i < num_values; i++) {
2616 ret = drm_property_add_enum(property, i,
2617 props[i].type,
2618 props[i].name);
2619 if (ret) {
2620 drm_property_destroy(dev, property);
2621 return NULL;
2622 }
2623 }
2624
2625 return property;
2626 }
2627 EXPORT_SYMBOL(drm_property_create_enum);
2628
2629 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
2630 const char *name,
2631 uint64_t min, uint64_t max)
2632 {
2633 struct drm_property *property;
2634
2635 flags |= DRM_MODE_PROP_RANGE;
2636
2637 property = drm_property_create(dev, flags, name, 2);
2638 if (!property)
2639 return NULL;
2640
2641 property->values[0] = min;
2642 property->values[1] = max;
2643
2644 return property;
2645 }
2646 EXPORT_SYMBOL(drm_property_create_range);
2647
2648 int drm_property_add_enum(struct drm_property *property, int index,
2649 uint64_t value, const char *name)
2650 {
2651 struct drm_property_enum *prop_enum;
2652
2653 if (!(property->flags & DRM_MODE_PROP_ENUM))
2654 return -EINVAL;
2655
2656 if (!list_empty(&property->enum_blob_list)) {
2657 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2658 if (prop_enum->value == value) {
2659 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2660 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2661 return 0;
2662 }
2663 }
2664 }
2665
2666 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2667 if (!prop_enum)
2668 return -ENOMEM;
2669
2670 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2671 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2672 prop_enum->value = value;
2673
2674 property->values[index] = value;
2675 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2676 return 0;
2677 }
2678 EXPORT_SYMBOL(drm_property_add_enum);
2679
2680 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2681 {
2682 struct drm_property_enum *prop_enum, *pt;
2683
2684 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2685 list_del(&prop_enum->head);
2686 kfree(prop_enum);
2687 }
2688
2689 if (property->num_values)
2690 kfree(property->values);
2691 drm_mode_object_put(dev, &property->base);
2692 list_del(&property->head);
2693 kfree(property);
2694 }
2695 EXPORT_SYMBOL(drm_property_destroy);
2696
2697 int drm_connector_attach_property(struct drm_connector *connector,
2698 struct drm_property *property, uint64_t init_val)
2699 {
2700 int i;
2701
2702 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2703 if (connector->property_ids[i] == 0) {
2704 connector->property_ids[i] = property->base.id;
2705 connector->property_values[i] = init_val;
2706 break;
2707 }
2708 }
2709
2710 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2711 return -EINVAL;
2712 return 0;
2713 }
2714 EXPORT_SYMBOL(drm_connector_attach_property);
2715
2716 int drm_connector_property_set_value(struct drm_connector *connector,
2717 struct drm_property *property, uint64_t value)
2718 {
2719 int i;
2720
2721 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2722 if (connector->property_ids[i] == property->base.id) {
2723 connector->property_values[i] = value;
2724 break;
2725 }
2726 }
2727
2728 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2729 return -EINVAL;
2730 return 0;
2731 }
2732 EXPORT_SYMBOL(drm_connector_property_set_value);
2733
2734 int drm_connector_property_get_value(struct drm_connector *connector,
2735 struct drm_property *property, uint64_t *val)
2736 {
2737 int i;
2738
2739 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2740 if (connector->property_ids[i] == property->base.id) {
2741 *val = connector->property_values[i];
2742 break;
2743 }
2744 }
2745
2746 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2747 return -EINVAL;
2748 return 0;
2749 }
2750 EXPORT_SYMBOL(drm_connector_property_get_value);
2751
2752 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2753 void *data, struct drm_file *file_priv)
2754 {
2755 struct drm_mode_object *obj;
2756 struct drm_mode_get_property *out_resp = data;
2757 struct drm_property *property;
2758 int enum_count = 0;
2759 int blob_count = 0;
2760 int value_count = 0;
2761 int ret = 0, i;
2762 int copied;
2763 struct drm_property_enum *prop_enum;
2764 struct drm_mode_property_enum __user *enum_ptr;
2765 struct drm_property_blob *prop_blob;
2766 uint32_t __user *blob_id_ptr;
2767 uint64_t __user *values_ptr;
2768 uint32_t __user *blob_length_ptr;
2769
2770 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2771 return -EINVAL;
2772
2773 mutex_lock(&dev->mode_config.mutex);
2774 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2775 if (!obj) {
2776 ret = -EINVAL;
2777 goto done;
2778 }
2779 property = obj_to_property(obj);
2780
2781 if (property->flags & DRM_MODE_PROP_ENUM) {
2782 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2783 enum_count++;
2784 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2785 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2786 blob_count++;
2787 }
2788
2789 value_count = property->num_values;
2790
2791 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2792 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2793 out_resp->flags = property->flags;
2794
2795 if ((out_resp->count_values >= value_count) && value_count) {
2796 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
2797 for (i = 0; i < value_count; i++) {
2798 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2799 ret = -EFAULT;
2800 goto done;
2801 }
2802 }
2803 }
2804 out_resp->count_values = value_count;
2805
2806 if (property->flags & DRM_MODE_PROP_ENUM) {
2807 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2808 copied = 0;
2809 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
2810 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2811
2812 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2813 ret = -EFAULT;
2814 goto done;
2815 }
2816
2817 if (copy_to_user(&enum_ptr[copied].name,
2818 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2819 ret = -EFAULT;
2820 goto done;
2821 }
2822 copied++;
2823 }
2824 }
2825 out_resp->count_enum_blobs = enum_count;
2826 }
2827
2828 if (property->flags & DRM_MODE_PROP_BLOB) {
2829 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2830 copied = 0;
2831 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
2832 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
2833
2834 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2835 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2836 ret = -EFAULT;
2837 goto done;
2838 }
2839
2840 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2841 ret = -EFAULT;
2842 goto done;
2843 }
2844
2845 copied++;
2846 }
2847 }
2848 out_resp->count_enum_blobs = blob_count;
2849 }
2850 done:
2851 mutex_unlock(&dev->mode_config.mutex);
2852 return ret;
2853 }
2854
2855 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2856 void *data)
2857 {
2858 struct drm_property_blob *blob;
2859
2860 if (!length || !data)
2861 return NULL;
2862
2863 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2864 if (!blob)
2865 return NULL;
2866
2867 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2868 blob->length = length;
2869
2870 memcpy(blob->data, data, length);
2871
2872 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2873
2874 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2875 return blob;
2876 }
2877
2878 static void drm_property_destroy_blob(struct drm_device *dev,
2879 struct drm_property_blob *blob)
2880 {
2881 drm_mode_object_put(dev, &blob->base);
2882 list_del(&blob->head);
2883 kfree(blob);
2884 }
2885
2886 int drm_mode_getblob_ioctl(struct drm_device *dev,
2887 void *data, struct drm_file *file_priv)
2888 {
2889 struct drm_mode_object *obj;
2890 struct drm_mode_get_blob *out_resp = data;
2891 struct drm_property_blob *blob;
2892 int ret = 0;
2893 void __user *blob_ptr;
2894
2895 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2896 return -EINVAL;
2897
2898 mutex_lock(&dev->mode_config.mutex);
2899 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2900 if (!obj) {
2901 ret = -EINVAL;
2902 goto done;
2903 }
2904 blob = obj_to_blob(obj);
2905
2906 if (out_resp->length == blob->length) {
2907 blob_ptr = (void __user *)(unsigned long)out_resp->data;
2908 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2909 ret = -EFAULT;
2910 goto done;
2911 }
2912 }
2913 out_resp->length = blob->length;
2914
2915 done:
2916 mutex_unlock(&dev->mode_config.mutex);
2917 return ret;
2918 }
2919
2920 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2921 struct edid *edid)
2922 {
2923 struct drm_device *dev = connector->dev;
2924 int ret = 0, size;
2925
2926 if (connector->edid_blob_ptr)
2927 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2928
2929 /* Delete edid, when there is none. */
2930 if (!edid) {
2931 connector->edid_blob_ptr = NULL;
2932 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2933 return ret;
2934 }
2935
2936 size = EDID_LENGTH * (1 + edid->extensions);
2937 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2938 size, edid);
2939
2940 ret = drm_connector_property_set_value(connector,
2941 dev->mode_config.edid_property,
2942 connector->edid_blob_ptr->base.id);
2943
2944 return ret;
2945 }
2946 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2947
2948 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2949 void *data, struct drm_file *file_priv)
2950 {
2951 struct drm_mode_connector_set_property *out_resp = data;
2952 struct drm_mode_object *obj;
2953 struct drm_property *property;
2954 struct drm_connector *connector;
2955 int ret = -EINVAL;
2956 int i;
2957
2958 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2959 return -EINVAL;
2960
2961 mutex_lock(&dev->mode_config.mutex);
2962
2963 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2964 if (!obj) {
2965 goto out;
2966 }
2967 connector = obj_to_connector(obj);
2968
2969 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2970 if (connector->property_ids[i] == out_resp->prop_id)
2971 break;
2972 }
2973
2974 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2975 goto out;
2976 }
2977
2978 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2979 if (!obj) {
2980 goto out;
2981 }
2982 property = obj_to_property(obj);
2983
2984 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2985 goto out;
2986
2987 if (property->flags & DRM_MODE_PROP_RANGE) {
2988 if (out_resp->value < property->values[0])
2989 goto out;
2990
2991 if (out_resp->value > property->values[1])
2992 goto out;
2993 } else {
2994 int found = 0;
2995 for (i = 0; i < property->num_values; i++) {
2996 if (property->values[i] == out_resp->value) {
2997 found = 1;
2998 break;
2999 }
3000 }
3001 if (!found) {
3002 goto out;
3003 }
3004 }
3005
3006 /* Do DPMS ourselves */
3007 if (property == connector->dev->mode_config.dpms_property) {
3008 if (connector->funcs->dpms)
3009 (*connector->funcs->dpms)(connector, (int) out_resp->value);
3010 ret = 0;
3011 } else if (connector->funcs->set_property)
3012 ret = connector->funcs->set_property(connector, property, out_resp->value);
3013
3014 /* store the property value if successful */
3015 if (!ret)
3016 drm_connector_property_set_value(connector, property, out_resp->value);
3017 out:
3018 mutex_unlock(&dev->mode_config.mutex);
3019 return ret;
3020 }
3021
3022 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3023 struct drm_encoder *encoder)
3024 {
3025 int i;
3026
3027 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3028 if (connector->encoder_ids[i] == 0) {
3029 connector->encoder_ids[i] = encoder->base.id;
3030 return 0;
3031 }
3032 }
3033 return -ENOMEM;
3034 }
3035 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3036
3037 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3038 struct drm_encoder *encoder)
3039 {
3040 int i;
3041 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3042 if (connector->encoder_ids[i] == encoder->base.id) {
3043 connector->encoder_ids[i] = 0;
3044 if (connector->encoder == encoder)
3045 connector->encoder = NULL;
3046 break;
3047 }
3048 }
3049 }
3050 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3051
3052 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3053 int gamma_size)
3054 {
3055 crtc->gamma_size = gamma_size;
3056
3057 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3058 if (!crtc->gamma_store) {
3059 crtc->gamma_size = 0;
3060 return -ENOMEM;
3061 }
3062
3063 return 0;
3064 }
3065 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3066
3067 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3068 void *data, struct drm_file *file_priv)
3069 {
3070 struct drm_mode_crtc_lut *crtc_lut = data;
3071 struct drm_mode_object *obj;
3072 struct drm_crtc *crtc;
3073 void *r_base, *g_base, *b_base;
3074 int size;
3075 int ret = 0;
3076
3077 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3078 return -EINVAL;
3079
3080 mutex_lock(&dev->mode_config.mutex);
3081 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3082 if (!obj) {
3083 ret = -EINVAL;
3084 goto out;
3085 }
3086 crtc = obj_to_crtc(obj);
3087
3088 /* memcpy into gamma store */
3089 if (crtc_lut->gamma_size != crtc->gamma_size) {
3090 ret = -EINVAL;
3091 goto out;
3092 }
3093
3094 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3095 r_base = crtc->gamma_store;
3096 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3097 ret = -EFAULT;
3098 goto out;
3099 }
3100
3101 g_base = r_base + size;
3102 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3103 ret = -EFAULT;
3104 goto out;
3105 }
3106
3107 b_base = g_base + size;
3108 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3109 ret = -EFAULT;
3110 goto out;
3111 }
3112
3113 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
3114
3115 out:
3116 mutex_unlock(&dev->mode_config.mutex);
3117 return ret;
3118
3119 }
3120
3121 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3122 void *data, struct drm_file *file_priv)
3123 {
3124 struct drm_mode_crtc_lut *crtc_lut = data;
3125 struct drm_mode_object *obj;
3126 struct drm_crtc *crtc;
3127 void *r_base, *g_base, *b_base;
3128 int size;
3129 int ret = 0;
3130
3131 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3132 return -EINVAL;
3133
3134 mutex_lock(&dev->mode_config.mutex);
3135 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3136 if (!obj) {
3137 ret = -EINVAL;
3138 goto out;
3139 }
3140 crtc = obj_to_crtc(obj);
3141
3142 /* memcpy into gamma store */
3143 if (crtc_lut->gamma_size != crtc->gamma_size) {
3144 ret = -EINVAL;
3145 goto out;
3146 }
3147
3148 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3149 r_base = crtc->gamma_store;
3150 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
3151 ret = -EFAULT;
3152 goto out;
3153 }
3154
3155 g_base = r_base + size;
3156 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
3157 ret = -EFAULT;
3158 goto out;
3159 }
3160
3161 b_base = g_base + size;
3162 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
3163 ret = -EFAULT;
3164 goto out;
3165 }
3166 out:
3167 mutex_unlock(&dev->mode_config.mutex);
3168 return ret;
3169 }
3170
3171 int drm_mode_page_flip_ioctl(struct drm_device *dev,
3172 void *data, struct drm_file *file_priv)
3173 {
3174 struct drm_mode_crtc_page_flip *page_flip = data;
3175 struct drm_mode_object *obj;
3176 struct drm_crtc *crtc;
3177 struct drm_framebuffer *fb;
3178 struct drm_pending_vblank_event *e = NULL;
3179 unsigned long flags;
3180 int ret = -EINVAL;
3181
3182 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
3183 page_flip->reserved != 0)
3184 return -EINVAL;
3185
3186 mutex_lock(&dev->mode_config.mutex);
3187 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3188 if (!obj)
3189 goto out;
3190 crtc = obj_to_crtc(obj);
3191
3192 if (crtc->fb == NULL) {
3193 /* The framebuffer is currently unbound, presumably
3194 * due to a hotplug event, that userspace has not
3195 * yet discovered.
3196 */
3197 ret = -EBUSY;
3198 goto out;
3199 }
3200
3201 if (crtc->funcs->page_flip == NULL)
3202 goto out;
3203
3204 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
3205 if (!obj)
3206 goto out;
3207 fb = obj_to_fb(obj);
3208
3209 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3210 ret = -ENOMEM;
3211 spin_lock_irqsave(&dev->event_lock, flags);
3212 if (file_priv->event_space < sizeof e->event) {
3213 spin_unlock_irqrestore(&dev->event_lock, flags);
3214 goto out;
3215 }
3216 file_priv->event_space -= sizeof e->event;
3217 spin_unlock_irqrestore(&dev->event_lock, flags);
3218
3219 e = kzalloc(sizeof *e, GFP_KERNEL);
3220 if (e == NULL) {
3221 spin_lock_irqsave(&dev->event_lock, flags);
3222 file_priv->event_space += sizeof e->event;
3223 spin_unlock_irqrestore(&dev->event_lock, flags);
3224 goto out;
3225 }
3226
3227 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
3228 e->event.base.length = sizeof e->event;
3229 e->event.user_data = page_flip->user_data;
3230 e->base.event = &e->event.base;
3231 e->base.file_priv = file_priv;
3232 e->base.destroy =
3233 (void (*) (struct drm_pending_event *)) kfree;
3234 }
3235
3236 ret = crtc->funcs->page_flip(crtc, fb, e);
3237 if (ret) {
3238 spin_lock_irqsave(&dev->event_lock, flags);
3239 file_priv->event_space += sizeof e->event;
3240 spin_unlock_irqrestore(&dev->event_lock, flags);
3241 kfree(e);
3242 }
3243
3244 out:
3245 mutex_unlock(&dev->mode_config.mutex);
3246 return ret;
3247 }
3248
3249 void drm_mode_config_reset(struct drm_device *dev)
3250 {
3251 struct drm_crtc *crtc;
3252 struct drm_encoder *encoder;
3253 struct drm_connector *connector;
3254
3255 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
3256 if (crtc->funcs->reset)
3257 crtc->funcs->reset(crtc);
3258
3259 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
3260 if (encoder->funcs->reset)
3261 encoder->funcs->reset(encoder);
3262
3263 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
3264 if (connector->funcs->reset)
3265 connector->funcs->reset(connector);
3266 }
3267 EXPORT_SYMBOL(drm_mode_config_reset);
3268
3269 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
3270 void *data, struct drm_file *file_priv)
3271 {
3272 struct drm_mode_create_dumb *args = data;
3273
3274 if (!dev->driver->dumb_create)
3275 return -ENOSYS;
3276 return dev->driver->dumb_create(file_priv, dev, args);
3277 }
3278
3279 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
3280 void *data, struct drm_file *file_priv)
3281 {
3282 struct drm_mode_map_dumb *args = data;
3283
3284 /* call driver ioctl to get mmap offset */
3285 if (!dev->driver->dumb_map_offset)
3286 return -ENOSYS;
3287
3288 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
3289 }
3290
3291 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
3292 void *data, struct drm_file *file_priv)
3293 {
3294 struct drm_mode_destroy_dumb *args = data;
3295
3296 if (!dev->driver->dumb_destroy)
3297 return -ENOSYS;
3298
3299 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
3300 }
3301
3302 /*
3303 * Just need to support RGB formats here for compat with code that doesn't
3304 * use pixel formats directly yet.
3305 */
3306 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
3307 int *bpp)
3308 {
3309 switch (format) {
3310 case DRM_FORMAT_RGB332:
3311 case DRM_FORMAT_BGR233:
3312 *depth = 8;
3313 *bpp = 8;
3314 break;
3315 case DRM_FORMAT_XRGB1555:
3316 case DRM_FORMAT_XBGR1555:
3317 case DRM_FORMAT_RGBX5551:
3318 case DRM_FORMAT_BGRX5551:
3319 case DRM_FORMAT_ARGB1555:
3320 case DRM_FORMAT_ABGR1555:
3321 case DRM_FORMAT_RGBA5551:
3322 case DRM_FORMAT_BGRA5551:
3323 *depth = 15;
3324 *bpp = 16;
3325 break;
3326 case DRM_FORMAT_RGB565:
3327 case DRM_FORMAT_BGR565:
3328 *depth = 16;
3329 *bpp = 16;
3330 break;
3331 case DRM_FORMAT_RGB888:
3332 case DRM_FORMAT_BGR888:
3333 *depth = 24;
3334 *bpp = 24;
3335 break;
3336 case DRM_FORMAT_XRGB8888:
3337 case DRM_FORMAT_XBGR8888:
3338 case DRM_FORMAT_RGBX8888:
3339 case DRM_FORMAT_BGRX8888:
3340 *depth = 24;
3341 *bpp = 32;
3342 break;
3343 case DRM_FORMAT_XRGB2101010:
3344 case DRM_FORMAT_XBGR2101010:
3345 case DRM_FORMAT_RGBX1010102:
3346 case DRM_FORMAT_BGRX1010102:
3347 case DRM_FORMAT_ARGB2101010:
3348 case DRM_FORMAT_ABGR2101010:
3349 case DRM_FORMAT_RGBA1010102:
3350 case DRM_FORMAT_BGRA1010102:
3351 *depth = 30;
3352 *bpp = 32;
3353 break;
3354 case DRM_FORMAT_ARGB8888:
3355 case DRM_FORMAT_ABGR8888:
3356 case DRM_FORMAT_RGBA8888:
3357 case DRM_FORMAT_BGRA8888:
3358 *depth = 32;
3359 *bpp = 32;
3360 break;
3361 default:
3362 DRM_DEBUG_KMS("unsupported pixel format\n");
3363 *depth = 0;
3364 *bpp = 0;
3365 break;
3366 }
3367 }
3368 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
Linux kernel - Deliverables
This page took 0.14571 seconds and 5 git commands to generate.