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drm: add drm_property_change_is_valid
[GitHub/LineageOS/android_kernel_samsung_universal7580.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 -ENOMEM;
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 else if (ret)
239 return ret;
240
241 obj->id = new_id;
242 obj->type = obj_type;
243 return 0;
244 }
245
246 /**
247 * drm_mode_object_put - free an identifer
248 * @dev: DRM device
249 * @id: ID to free
250 *
251 * LOCKING:
252 * Caller must hold DRM mode_config lock.
253 *
254 * Free @id from @dev's unique identifier pool.
255 */
256 static void drm_mode_object_put(struct drm_device *dev,
257 struct drm_mode_object *object)
258 {
259 mutex_lock(&dev->mode_config.idr_mutex);
260 idr_remove(&dev->mode_config.crtc_idr, object->id);
261 mutex_unlock(&dev->mode_config.idr_mutex);
262 }
263
264 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
265 uint32_t id, uint32_t type)
266 {
267 struct drm_mode_object *obj = NULL;
268
269 mutex_lock(&dev->mode_config.idr_mutex);
270 obj = idr_find(&dev->mode_config.crtc_idr, id);
271 if (!obj || (obj->type != type) || (obj->id != id))
272 obj = NULL;
273 mutex_unlock(&dev->mode_config.idr_mutex);
274
275 return obj;
276 }
277 EXPORT_SYMBOL(drm_mode_object_find);
278
279 /**
280 * drm_framebuffer_init - initialize a framebuffer
281 * @dev: DRM device
282 *
283 * LOCKING:
284 * Caller must hold mode config lock.
285 *
286 * Allocates an ID for the framebuffer's parent mode object, sets its mode
287 * functions & device file and adds it to the master fd list.
288 *
289 * RETURNS:
290 * Zero on success, error code on failure.
291 */
292 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
293 const struct drm_framebuffer_funcs *funcs)
294 {
295 int ret;
296
297 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
298 if (ret)
299 return ret;
300
301 fb->dev = dev;
302 fb->funcs = funcs;
303 dev->mode_config.num_fb++;
304 list_add(&fb->head, &dev->mode_config.fb_list);
305
306 return 0;
307 }
308 EXPORT_SYMBOL(drm_framebuffer_init);
309
310 /**
311 * drm_framebuffer_cleanup - remove a framebuffer object
312 * @fb: framebuffer to remove
313 *
314 * LOCKING:
315 * Caller must hold mode config lock.
316 *
317 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
318 * it, setting it to NULL.
319 */
320 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
321 {
322 struct drm_device *dev = fb->dev;
323 struct drm_crtc *crtc;
324 struct drm_plane *plane;
325 struct drm_mode_set set;
326 int ret;
327
328 /* remove from any CRTC */
329 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
330 if (crtc->fb == fb) {
331 /* should turn off the crtc */
332 memset(&set, 0, sizeof(struct drm_mode_set));
333 set.crtc = crtc;
334 set.fb = NULL;
335 ret = crtc->funcs->set_config(&set);
336 if (ret)
337 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
338 }
339 }
340
341 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
342 if (plane->fb == fb) {
343 /* should turn off the crtc */
344 ret = plane->funcs->disable_plane(plane);
345 if (ret)
346 DRM_ERROR("failed to disable plane with busy fb\n");
347 /* disconnect the plane from the fb and crtc: */
348 plane->fb = NULL;
349 plane->crtc = NULL;
350 }
351 }
352
353 drm_mode_object_put(dev, &fb->base);
354 list_del(&fb->head);
355 dev->mode_config.num_fb--;
356 }
357 EXPORT_SYMBOL(drm_framebuffer_cleanup);
358
359 /**
360 * drm_crtc_init - Initialise a new CRTC object
361 * @dev: DRM device
362 * @crtc: CRTC object to init
363 * @funcs: callbacks for the new CRTC
364 *
365 * LOCKING:
366 * Caller must hold mode config lock.
367 *
368 * Inits a new object created as base part of an driver crtc object.
369 *
370 * RETURNS:
371 * Zero on success, error code on failure.
372 */
373 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
374 const struct drm_crtc_funcs *funcs)
375 {
376 int ret;
377
378 crtc->dev = dev;
379 crtc->funcs = funcs;
380
381 mutex_lock(&dev->mode_config.mutex);
382
383 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
384 if (ret)
385 goto out;
386
387 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
388 dev->mode_config.num_crtc++;
389
390 out:
391 mutex_unlock(&dev->mode_config.mutex);
392
393 return ret;
394 }
395 EXPORT_SYMBOL(drm_crtc_init);
396
397 /**
398 * drm_crtc_cleanup - Cleans up the core crtc usage.
399 * @crtc: CRTC to cleanup
400 *
401 * LOCKING:
402 * Caller must hold mode config lock.
403 *
404 * Cleanup @crtc. Removes from drm modesetting space
405 * does NOT free object, caller does that.
406 */
407 void drm_crtc_cleanup(struct drm_crtc *crtc)
408 {
409 struct drm_device *dev = crtc->dev;
410
411 if (crtc->gamma_store) {
412 kfree(crtc->gamma_store);
413 crtc->gamma_store = NULL;
414 }
415
416 drm_mode_object_put(dev, &crtc->base);
417 list_del(&crtc->head);
418 dev->mode_config.num_crtc--;
419 }
420 EXPORT_SYMBOL(drm_crtc_cleanup);
421
422 /**
423 * drm_mode_probed_add - add a mode to a connector's probed mode list
424 * @connector: connector the new mode
425 * @mode: mode data
426 *
427 * LOCKING:
428 * Caller must hold mode config lock.
429 *
430 * Add @mode to @connector's mode list for later use.
431 */
432 void drm_mode_probed_add(struct drm_connector *connector,
433 struct drm_display_mode *mode)
434 {
435 list_add(&mode->head, &connector->probed_modes);
436 }
437 EXPORT_SYMBOL(drm_mode_probed_add);
438
439 /**
440 * drm_mode_remove - remove and free a mode
441 * @connector: connector list to modify
442 * @mode: mode to remove
443 *
444 * LOCKING:
445 * Caller must hold mode config lock.
446 *
447 * Remove @mode from @connector's mode list, then free it.
448 */
449 void drm_mode_remove(struct drm_connector *connector,
450 struct drm_display_mode *mode)
451 {
452 list_del(&mode->head);
453 drm_mode_destroy(connector->dev, mode);
454 }
455 EXPORT_SYMBOL(drm_mode_remove);
456
457 /**
458 * drm_connector_init - Init a preallocated connector
459 * @dev: DRM device
460 * @connector: the connector to init
461 * @funcs: callbacks for this connector
462 * @name: user visible name of the connector
463 *
464 * LOCKING:
465 * Takes mode config lock.
466 *
467 * Initialises a preallocated connector. Connectors should be
468 * subclassed as part of driver connector objects.
469 *
470 * RETURNS:
471 * Zero on success, error code on failure.
472 */
473 int drm_connector_init(struct drm_device *dev,
474 struct drm_connector *connector,
475 const struct drm_connector_funcs *funcs,
476 int connector_type)
477 {
478 int ret;
479
480 mutex_lock(&dev->mode_config.mutex);
481
482 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
483 if (ret)
484 goto out;
485
486 connector->dev = dev;
487 connector->funcs = funcs;
488 connector->connector_type = connector_type;
489 connector->connector_type_id =
490 ++drm_connector_enum_list[connector_type].count; /* TODO */
491 INIT_LIST_HEAD(&connector->user_modes);
492 INIT_LIST_HEAD(&connector->probed_modes);
493 INIT_LIST_HEAD(&connector->modes);
494 connector->edid_blob_ptr = NULL;
495
496 list_add_tail(&connector->head, &dev->mode_config.connector_list);
497 dev->mode_config.num_connector++;
498
499 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
500 drm_connector_attach_property(connector,
501 dev->mode_config.edid_property,
502 0);
503
504 drm_connector_attach_property(connector,
505 dev->mode_config.dpms_property, 0);
506
507 out:
508 mutex_unlock(&dev->mode_config.mutex);
509
510 return ret;
511 }
512 EXPORT_SYMBOL(drm_connector_init);
513
514 /**
515 * drm_connector_cleanup - cleans up an initialised connector
516 * @connector: connector to cleanup
517 *
518 * LOCKING:
519 * Takes mode config lock.
520 *
521 * Cleans up the connector but doesn't free the object.
522 */
523 void drm_connector_cleanup(struct drm_connector *connector)
524 {
525 struct drm_device *dev = connector->dev;
526 struct drm_display_mode *mode, *t;
527
528 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
529 drm_mode_remove(connector, mode);
530
531 list_for_each_entry_safe(mode, t, &connector->modes, head)
532 drm_mode_remove(connector, mode);
533
534 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
535 drm_mode_remove(connector, mode);
536
537 mutex_lock(&dev->mode_config.mutex);
538 drm_mode_object_put(dev, &connector->base);
539 list_del(&connector->head);
540 dev->mode_config.num_connector--;
541 mutex_unlock(&dev->mode_config.mutex);
542 }
543 EXPORT_SYMBOL(drm_connector_cleanup);
544
545 void drm_connector_unplug_all(struct drm_device *dev)
546 {
547 struct drm_connector *connector;
548
549 /* taking the mode config mutex ends up in a clash with sysfs */
550 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
551 drm_sysfs_connector_remove(connector);
552
553 }
554 EXPORT_SYMBOL(drm_connector_unplug_all);
555
556 int drm_encoder_init(struct drm_device *dev,
557 struct drm_encoder *encoder,
558 const struct drm_encoder_funcs *funcs,
559 int encoder_type)
560 {
561 int ret;
562
563 mutex_lock(&dev->mode_config.mutex);
564
565 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
566 if (ret)
567 goto out;
568
569 encoder->dev = dev;
570 encoder->encoder_type = encoder_type;
571 encoder->funcs = funcs;
572
573 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
574 dev->mode_config.num_encoder++;
575
576 out:
577 mutex_unlock(&dev->mode_config.mutex);
578
579 return ret;
580 }
581 EXPORT_SYMBOL(drm_encoder_init);
582
583 void drm_encoder_cleanup(struct drm_encoder *encoder)
584 {
585 struct drm_device *dev = encoder->dev;
586 mutex_lock(&dev->mode_config.mutex);
587 drm_mode_object_put(dev, &encoder->base);
588 list_del(&encoder->head);
589 dev->mode_config.num_encoder--;
590 mutex_unlock(&dev->mode_config.mutex);
591 }
592 EXPORT_SYMBOL(drm_encoder_cleanup);
593
594 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
595 unsigned long possible_crtcs,
596 const struct drm_plane_funcs *funcs,
597 const uint32_t *formats, uint32_t format_count,
598 bool priv)
599 {
600 int ret;
601
602 mutex_lock(&dev->mode_config.mutex);
603
604 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
605 if (ret)
606 goto out;
607
608 plane->dev = dev;
609 plane->funcs = funcs;
610 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
611 GFP_KERNEL);
612 if (!plane->format_types) {
613 DRM_DEBUG_KMS("out of memory when allocating plane\n");
614 drm_mode_object_put(dev, &plane->base);
615 ret = -ENOMEM;
616 goto out;
617 }
618
619 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
620 plane->format_count = format_count;
621 plane->possible_crtcs = possible_crtcs;
622
623 /* private planes are not exposed to userspace, but depending on
624 * display hardware, might be convenient to allow sharing programming
625 * for the scanout engine with the crtc implementation.
626 */
627 if (!priv) {
628 list_add_tail(&plane->head, &dev->mode_config.plane_list);
629 dev->mode_config.num_plane++;
630 } else {
631 INIT_LIST_HEAD(&plane->head);
632 }
633
634 out:
635 mutex_unlock(&dev->mode_config.mutex);
636
637 return ret;
638 }
639 EXPORT_SYMBOL(drm_plane_init);
640
641 void drm_plane_cleanup(struct drm_plane *plane)
642 {
643 struct drm_device *dev = plane->dev;
644
645 mutex_lock(&dev->mode_config.mutex);
646 kfree(plane->format_types);
647 drm_mode_object_put(dev, &plane->base);
648 /* if not added to a list, it must be a private plane */
649 if (!list_empty(&plane->head)) {
650 list_del(&plane->head);
651 dev->mode_config.num_plane--;
652 }
653 mutex_unlock(&dev->mode_config.mutex);
654 }
655 EXPORT_SYMBOL(drm_plane_cleanup);
656
657 /**
658 * drm_mode_create - create a new display mode
659 * @dev: DRM device
660 *
661 * LOCKING:
662 * Caller must hold DRM mode_config lock.
663 *
664 * Create a new drm_display_mode, give it an ID, and return it.
665 *
666 * RETURNS:
667 * Pointer to new mode on success, NULL on error.
668 */
669 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
670 {
671 struct drm_display_mode *nmode;
672
673 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
674 if (!nmode)
675 return NULL;
676
677 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) {
678 kfree(nmode);
679 return NULL;
680 }
681
682 return nmode;
683 }
684 EXPORT_SYMBOL(drm_mode_create);
685
686 /**
687 * drm_mode_destroy - remove a mode
688 * @dev: DRM device
689 * @mode: mode to remove
690 *
691 * LOCKING:
692 * Caller must hold mode config lock.
693 *
694 * Free @mode's unique identifier, then free it.
695 */
696 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
697 {
698 if (!mode)
699 return;
700
701 drm_mode_object_put(dev, &mode->base);
702
703 kfree(mode);
704 }
705 EXPORT_SYMBOL(drm_mode_destroy);
706
707 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
708 {
709 struct drm_property *edid;
710 struct drm_property *dpms;
711
712 /*
713 * Standard properties (apply to all connectors)
714 */
715 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
716 DRM_MODE_PROP_IMMUTABLE,
717 "EDID", 0);
718 dev->mode_config.edid_property = edid;
719
720 dpms = drm_property_create_enum(dev, 0,
721 "DPMS", drm_dpms_enum_list,
722 ARRAY_SIZE(drm_dpms_enum_list));
723 dev->mode_config.dpms_property = dpms;
724
725 return 0;
726 }
727
728 /**
729 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
730 * @dev: DRM device
731 *
732 * Called by a driver the first time a DVI-I connector is made.
733 */
734 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
735 {
736 struct drm_property *dvi_i_selector;
737 struct drm_property *dvi_i_subconnector;
738
739 if (dev->mode_config.dvi_i_select_subconnector_property)
740 return 0;
741
742 dvi_i_selector =
743 drm_property_create_enum(dev, 0,
744 "select subconnector",
745 drm_dvi_i_select_enum_list,
746 ARRAY_SIZE(drm_dvi_i_select_enum_list));
747 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
748
749 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
750 "subconnector",
751 drm_dvi_i_subconnector_enum_list,
752 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
753 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
754
755 return 0;
756 }
757 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
758
759 /**
760 * drm_create_tv_properties - create TV specific connector properties
761 * @dev: DRM device
762 * @num_modes: number of different TV formats (modes) supported
763 * @modes: array of pointers to strings containing name of each format
764 *
765 * Called by a driver's TV initialization routine, this function creates
766 * the TV specific connector properties for a given device. Caller is
767 * responsible for allocating a list of format names and passing them to
768 * this routine.
769 */
770 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
771 char *modes[])
772 {
773 struct drm_property *tv_selector;
774 struct drm_property *tv_subconnector;
775 int i;
776
777 if (dev->mode_config.tv_select_subconnector_property)
778 return 0;
779
780 /*
781 * Basic connector properties
782 */
783 tv_selector = drm_property_create_enum(dev, 0,
784 "select subconnector",
785 drm_tv_select_enum_list,
786 ARRAY_SIZE(drm_tv_select_enum_list));
787 dev->mode_config.tv_select_subconnector_property = tv_selector;
788
789 tv_subconnector =
790 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
791 "subconnector",
792 drm_tv_subconnector_enum_list,
793 ARRAY_SIZE(drm_tv_subconnector_enum_list));
794 dev->mode_config.tv_subconnector_property = tv_subconnector;
795
796 /*
797 * Other, TV specific properties: margins & TV modes.
798 */
799 dev->mode_config.tv_left_margin_property =
800 drm_property_create_range(dev, 0, "left margin", 0, 100);
801
802 dev->mode_config.tv_right_margin_property =
803 drm_property_create_range(dev, 0, "right margin", 0, 100);
804
805 dev->mode_config.tv_top_margin_property =
806 drm_property_create_range(dev, 0, "top margin", 0, 100);
807
808 dev->mode_config.tv_bottom_margin_property =
809 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
810
811 dev->mode_config.tv_mode_property =
812 drm_property_create(dev, DRM_MODE_PROP_ENUM,
813 "mode", num_modes);
814 for (i = 0; i < num_modes; i++)
815 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
816 i, modes[i]);
817
818 dev->mode_config.tv_brightness_property =
819 drm_property_create_range(dev, 0, "brightness", 0, 100);
820
821 dev->mode_config.tv_contrast_property =
822 drm_property_create_range(dev, 0, "contrast", 0, 100);
823
824 dev->mode_config.tv_flicker_reduction_property =
825 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
826
827 dev->mode_config.tv_overscan_property =
828 drm_property_create_range(dev, 0, "overscan", 0, 100);
829
830 dev->mode_config.tv_saturation_property =
831 drm_property_create_range(dev, 0, "saturation", 0, 100);
832
833 dev->mode_config.tv_hue_property =
834 drm_property_create_range(dev, 0, "hue", 0, 100);
835
836 return 0;
837 }
838 EXPORT_SYMBOL(drm_mode_create_tv_properties);
839
840 /**
841 * drm_mode_create_scaling_mode_property - create scaling mode property
842 * @dev: DRM device
843 *
844 * Called by a driver the first time it's needed, must be attached to desired
845 * connectors.
846 */
847 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
848 {
849 struct drm_property *scaling_mode;
850
851 if (dev->mode_config.scaling_mode_property)
852 return 0;
853
854 scaling_mode =
855 drm_property_create_enum(dev, 0, "scaling mode",
856 drm_scaling_mode_enum_list,
857 ARRAY_SIZE(drm_scaling_mode_enum_list));
858
859 dev->mode_config.scaling_mode_property = scaling_mode;
860
861 return 0;
862 }
863 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
864
865 /**
866 * drm_mode_create_dithering_property - create dithering property
867 * @dev: DRM device
868 *
869 * Called by a driver the first time it's needed, must be attached to desired
870 * connectors.
871 */
872 int drm_mode_create_dithering_property(struct drm_device *dev)
873 {
874 struct drm_property *dithering_mode;
875
876 if (dev->mode_config.dithering_mode_property)
877 return 0;
878
879 dithering_mode =
880 drm_property_create_enum(dev, 0, "dithering",
881 drm_dithering_mode_enum_list,
882 ARRAY_SIZE(drm_dithering_mode_enum_list));
883 dev->mode_config.dithering_mode_property = dithering_mode;
884
885 return 0;
886 }
887 EXPORT_SYMBOL(drm_mode_create_dithering_property);
888
889 /**
890 * drm_mode_create_dirty_property - create dirty property
891 * @dev: DRM device
892 *
893 * Called by a driver the first time it's needed, must be attached to desired
894 * connectors.
895 */
896 int drm_mode_create_dirty_info_property(struct drm_device *dev)
897 {
898 struct drm_property *dirty_info;
899
900 if (dev->mode_config.dirty_info_property)
901 return 0;
902
903 dirty_info =
904 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
905 "dirty",
906 drm_dirty_info_enum_list,
907 ARRAY_SIZE(drm_dirty_info_enum_list));
908 dev->mode_config.dirty_info_property = dirty_info;
909
910 return 0;
911 }
912 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
913
914 /**
915 * drm_mode_config_init - initialize DRM mode_configuration structure
916 * @dev: DRM device
917 *
918 * LOCKING:
919 * None, should happen single threaded at init time.
920 *
921 * Initialize @dev's mode_config structure, used for tracking the graphics
922 * configuration of @dev.
923 */
924 void drm_mode_config_init(struct drm_device *dev)
925 {
926 mutex_init(&dev->mode_config.mutex);
927 mutex_init(&dev->mode_config.idr_mutex);
928 INIT_LIST_HEAD(&dev->mode_config.fb_list);
929 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
930 INIT_LIST_HEAD(&dev->mode_config.connector_list);
931 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
932 INIT_LIST_HEAD(&dev->mode_config.property_list);
933 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
934 INIT_LIST_HEAD(&dev->mode_config.plane_list);
935 idr_init(&dev->mode_config.crtc_idr);
936
937 mutex_lock(&dev->mode_config.mutex);
938 drm_mode_create_standard_connector_properties(dev);
939 mutex_unlock(&dev->mode_config.mutex);
940
941 /* Just to be sure */
942 dev->mode_config.num_fb = 0;
943 dev->mode_config.num_connector = 0;
944 dev->mode_config.num_crtc = 0;
945 dev->mode_config.num_encoder = 0;
946 }
947 EXPORT_SYMBOL(drm_mode_config_init);
948
949 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
950 {
951 uint32_t total_objects = 0;
952
953 total_objects += dev->mode_config.num_crtc;
954 total_objects += dev->mode_config.num_connector;
955 total_objects += dev->mode_config.num_encoder;
956
957 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
958 if (!group->id_list)
959 return -ENOMEM;
960
961 group->num_crtcs = 0;
962 group->num_connectors = 0;
963 group->num_encoders = 0;
964 return 0;
965 }
966
967 int drm_mode_group_init_legacy_group(struct drm_device *dev,
968 struct drm_mode_group *group)
969 {
970 struct drm_crtc *crtc;
971 struct drm_encoder *encoder;
972 struct drm_connector *connector;
973 int ret;
974
975 if ((ret = drm_mode_group_init(dev, group)))
976 return ret;
977
978 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
979 group->id_list[group->num_crtcs++] = crtc->base.id;
980
981 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
982 group->id_list[group->num_crtcs + group->num_encoders++] =
983 encoder->base.id;
984
985 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
986 group->id_list[group->num_crtcs + group->num_encoders +
987 group->num_connectors++] = connector->base.id;
988
989 return 0;
990 }
991 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
992
993 /**
994 * drm_mode_config_cleanup - free up DRM mode_config info
995 * @dev: DRM device
996 *
997 * LOCKING:
998 * Caller must hold mode config lock.
999 *
1000 * Free up all the connectors and CRTCs associated with this DRM device, then
1001 * free up the framebuffers and associated buffer objects.
1002 *
1003 * FIXME: cleanup any dangling user buffer objects too
1004 */
1005 void drm_mode_config_cleanup(struct drm_device *dev)
1006 {
1007 struct drm_connector *connector, *ot;
1008 struct drm_crtc *crtc, *ct;
1009 struct drm_encoder *encoder, *enct;
1010 struct drm_framebuffer *fb, *fbt;
1011 struct drm_property *property, *pt;
1012 struct drm_plane *plane, *plt;
1013
1014 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
1015 head) {
1016 encoder->funcs->destroy(encoder);
1017 }
1018
1019 list_for_each_entry_safe(connector, ot,
1020 &dev->mode_config.connector_list, head) {
1021 connector->funcs->destroy(connector);
1022 }
1023
1024 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
1025 head) {
1026 drm_property_destroy(dev, property);
1027 }
1028
1029 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
1030 fb->funcs->destroy(fb);
1031 }
1032
1033 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
1034 crtc->funcs->destroy(crtc);
1035 }
1036
1037 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
1038 head) {
1039 plane->funcs->destroy(plane);
1040 }
1041
1042 idr_remove_all(&dev->mode_config.crtc_idr);
1043 idr_destroy(&dev->mode_config.crtc_idr);
1044 }
1045 EXPORT_SYMBOL(drm_mode_config_cleanup);
1046
1047 /**
1048 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1049 * @out: drm_mode_modeinfo struct to return to the user
1050 * @in: drm_display_mode to use
1051 *
1052 * LOCKING:
1053 * None.
1054 *
1055 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1056 * the user.
1057 */
1058 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1059 const struct drm_display_mode *in)
1060 {
1061 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1062 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1063 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1064 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1065 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1066 "timing values too large for mode info\n");
1067
1068 out->clock = in->clock;
1069 out->hdisplay = in->hdisplay;
1070 out->hsync_start = in->hsync_start;
1071 out->hsync_end = in->hsync_end;
1072 out->htotal = in->htotal;
1073 out->hskew = in->hskew;
1074 out->vdisplay = in->vdisplay;
1075 out->vsync_start = in->vsync_start;
1076 out->vsync_end = in->vsync_end;
1077 out->vtotal = in->vtotal;
1078 out->vscan = in->vscan;
1079 out->vrefresh = in->vrefresh;
1080 out->flags = in->flags;
1081 out->type = in->type;
1082 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1083 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1084 }
1085
1086 /**
1087 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1088 * @out: drm_display_mode to return to the user
1089 * @in: drm_mode_modeinfo to use
1090 *
1091 * LOCKING:
1092 * None.
1093 *
1094 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1095 * the caller.
1096 *
1097 * RETURNS:
1098 * Zero on success, errno on failure.
1099 */
1100 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1101 const struct drm_mode_modeinfo *in)
1102 {
1103 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1104 return -ERANGE;
1105
1106 out->clock = in->clock;
1107 out->hdisplay = in->hdisplay;
1108 out->hsync_start = in->hsync_start;
1109 out->hsync_end = in->hsync_end;
1110 out->htotal = in->htotal;
1111 out->hskew = in->hskew;
1112 out->vdisplay = in->vdisplay;
1113 out->vsync_start = in->vsync_start;
1114 out->vsync_end = in->vsync_end;
1115 out->vtotal = in->vtotal;
1116 out->vscan = in->vscan;
1117 out->vrefresh = in->vrefresh;
1118 out->flags = in->flags;
1119 out->type = in->type;
1120 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1121 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1122
1123 return 0;
1124 }
1125
1126 /**
1127 * drm_mode_getresources - get graphics configuration
1128 * @inode: inode from the ioctl
1129 * @filp: file * from the ioctl
1130 * @cmd: cmd from ioctl
1131 * @arg: arg from ioctl
1132 *
1133 * LOCKING:
1134 * Takes mode config lock.
1135 *
1136 * Construct a set of configuration description structures and return
1137 * them to the user, including CRTC, connector and framebuffer configuration.
1138 *
1139 * Called by the user via ioctl.
1140 *
1141 * RETURNS:
1142 * Zero on success, errno on failure.
1143 */
1144 int drm_mode_getresources(struct drm_device *dev, void *data,
1145 struct drm_file *file_priv)
1146 {
1147 struct drm_mode_card_res *card_res = data;
1148 struct list_head *lh;
1149 struct drm_framebuffer *fb;
1150 struct drm_connector *connector;
1151 struct drm_crtc *crtc;
1152 struct drm_encoder *encoder;
1153 int ret = 0;
1154 int connector_count = 0;
1155 int crtc_count = 0;
1156 int fb_count = 0;
1157 int encoder_count = 0;
1158 int copied = 0, i;
1159 uint32_t __user *fb_id;
1160 uint32_t __user *crtc_id;
1161 uint32_t __user *connector_id;
1162 uint32_t __user *encoder_id;
1163 struct drm_mode_group *mode_group;
1164
1165 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1166 return -EINVAL;
1167
1168 mutex_lock(&dev->mode_config.mutex);
1169
1170 /*
1171 * For the non-control nodes we need to limit the list of resources
1172 * by IDs in the group list for this node
1173 */
1174 list_for_each(lh, &file_priv->fbs)
1175 fb_count++;
1176
1177 mode_group = &file_priv->master->minor->mode_group;
1178 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1179
1180 list_for_each(lh, &dev->mode_config.crtc_list)
1181 crtc_count++;
1182
1183 list_for_each(lh, &dev->mode_config.connector_list)
1184 connector_count++;
1185
1186 list_for_each(lh, &dev->mode_config.encoder_list)
1187 encoder_count++;
1188 } else {
1189
1190 crtc_count = mode_group->num_crtcs;
1191 connector_count = mode_group->num_connectors;
1192 encoder_count = mode_group->num_encoders;
1193 }
1194
1195 card_res->max_height = dev->mode_config.max_height;
1196 card_res->min_height = dev->mode_config.min_height;
1197 card_res->max_width = dev->mode_config.max_width;
1198 card_res->min_width = dev->mode_config.min_width;
1199
1200 /* handle this in 4 parts */
1201 /* FBs */
1202 if (card_res->count_fbs >= fb_count) {
1203 copied = 0;
1204 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1205 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1206 if (put_user(fb->base.id, fb_id + copied)) {
1207 ret = -EFAULT;
1208 goto out;
1209 }
1210 copied++;
1211 }
1212 }
1213 card_res->count_fbs = fb_count;
1214
1215 /* CRTCs */
1216 if (card_res->count_crtcs >= crtc_count) {
1217 copied = 0;
1218 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1219 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1220 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1221 head) {
1222 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1223 if (put_user(crtc->base.id, crtc_id + copied)) {
1224 ret = -EFAULT;
1225 goto out;
1226 }
1227 copied++;
1228 }
1229 } else {
1230 for (i = 0; i < mode_group->num_crtcs; i++) {
1231 if (put_user(mode_group->id_list[i],
1232 crtc_id + copied)) {
1233 ret = -EFAULT;
1234 goto out;
1235 }
1236 copied++;
1237 }
1238 }
1239 }
1240 card_res->count_crtcs = crtc_count;
1241
1242 /* Encoders */
1243 if (card_res->count_encoders >= encoder_count) {
1244 copied = 0;
1245 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1246 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1247 list_for_each_entry(encoder,
1248 &dev->mode_config.encoder_list,
1249 head) {
1250 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1251 drm_get_encoder_name(encoder));
1252 if (put_user(encoder->base.id, encoder_id +
1253 copied)) {
1254 ret = -EFAULT;
1255 goto out;
1256 }
1257 copied++;
1258 }
1259 } else {
1260 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1261 if (put_user(mode_group->id_list[i],
1262 encoder_id + copied)) {
1263 ret = -EFAULT;
1264 goto out;
1265 }
1266 copied++;
1267 }
1268
1269 }
1270 }
1271 card_res->count_encoders = encoder_count;
1272
1273 /* Connectors */
1274 if (card_res->count_connectors >= connector_count) {
1275 copied = 0;
1276 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1277 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1278 list_for_each_entry(connector,
1279 &dev->mode_config.connector_list,
1280 head) {
1281 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1282 connector->base.id,
1283 drm_get_connector_name(connector));
1284 if (put_user(connector->base.id,
1285 connector_id + copied)) {
1286 ret = -EFAULT;
1287 goto out;
1288 }
1289 copied++;
1290 }
1291 } else {
1292 int start = mode_group->num_crtcs +
1293 mode_group->num_encoders;
1294 for (i = start; i < start + mode_group->num_connectors; i++) {
1295 if (put_user(mode_group->id_list[i],
1296 connector_id + copied)) {
1297 ret = -EFAULT;
1298 goto out;
1299 }
1300 copied++;
1301 }
1302 }
1303 }
1304 card_res->count_connectors = connector_count;
1305
1306 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1307 card_res->count_connectors, card_res->count_encoders);
1308
1309 out:
1310 mutex_unlock(&dev->mode_config.mutex);
1311 return ret;
1312 }
1313
1314 /**
1315 * drm_mode_getcrtc - get CRTC configuration
1316 * @inode: inode from the ioctl
1317 * @filp: file * from the ioctl
1318 * @cmd: cmd from ioctl
1319 * @arg: arg from ioctl
1320 *
1321 * LOCKING:
1322 * Takes mode config lock.
1323 *
1324 * Construct a CRTC configuration structure to return to the user.
1325 *
1326 * Called by the user via ioctl.
1327 *
1328 * RETURNS:
1329 * Zero on success, errno on failure.
1330 */
1331 int drm_mode_getcrtc(struct drm_device *dev,
1332 void *data, struct drm_file *file_priv)
1333 {
1334 struct drm_mode_crtc *crtc_resp = data;
1335 struct drm_crtc *crtc;
1336 struct drm_mode_object *obj;
1337 int ret = 0;
1338
1339 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1340 return -EINVAL;
1341
1342 mutex_lock(&dev->mode_config.mutex);
1343
1344 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1345 DRM_MODE_OBJECT_CRTC);
1346 if (!obj) {
1347 ret = -EINVAL;
1348 goto out;
1349 }
1350 crtc = obj_to_crtc(obj);
1351
1352 crtc_resp->x = crtc->x;
1353 crtc_resp->y = crtc->y;
1354 crtc_resp->gamma_size = crtc->gamma_size;
1355 if (crtc->fb)
1356 crtc_resp->fb_id = crtc->fb->base.id;
1357 else
1358 crtc_resp->fb_id = 0;
1359
1360 if (crtc->enabled) {
1361
1362 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1363 crtc_resp->mode_valid = 1;
1364
1365 } else {
1366 crtc_resp->mode_valid = 0;
1367 }
1368
1369 out:
1370 mutex_unlock(&dev->mode_config.mutex);
1371 return ret;
1372 }
1373
1374 /**
1375 * drm_mode_getconnector - get connector configuration
1376 * @inode: inode from the ioctl
1377 * @filp: file * from the ioctl
1378 * @cmd: cmd from ioctl
1379 * @arg: arg from ioctl
1380 *
1381 * LOCKING:
1382 * Takes mode config lock.
1383 *
1384 * Construct a connector configuration structure to return to the user.
1385 *
1386 * Called by the user via ioctl.
1387 *
1388 * RETURNS:
1389 * Zero on success, errno on failure.
1390 */
1391 int drm_mode_getconnector(struct drm_device *dev, void *data,
1392 struct drm_file *file_priv)
1393 {
1394 struct drm_mode_get_connector *out_resp = data;
1395 struct drm_mode_object *obj;
1396 struct drm_connector *connector;
1397 struct drm_display_mode *mode;
1398 int mode_count = 0;
1399 int props_count = 0;
1400 int encoders_count = 0;
1401 int ret = 0;
1402 int copied = 0;
1403 int i;
1404 struct drm_mode_modeinfo u_mode;
1405 struct drm_mode_modeinfo __user *mode_ptr;
1406 uint32_t __user *prop_ptr;
1407 uint64_t __user *prop_values;
1408 uint32_t __user *encoder_ptr;
1409
1410 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1411 return -EINVAL;
1412
1413 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1414
1415 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1416
1417 mutex_lock(&dev->mode_config.mutex);
1418
1419 obj = drm_mode_object_find(dev, out_resp->connector_id,
1420 DRM_MODE_OBJECT_CONNECTOR);
1421 if (!obj) {
1422 ret = -EINVAL;
1423 goto out;
1424 }
1425 connector = obj_to_connector(obj);
1426
1427 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1428 if (connector->property_ids[i] != 0) {
1429 props_count++;
1430 }
1431 }
1432
1433 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1434 if (connector->encoder_ids[i] != 0) {
1435 encoders_count++;
1436 }
1437 }
1438
1439 if (out_resp->count_modes == 0) {
1440 connector->funcs->fill_modes(connector,
1441 dev->mode_config.max_width,
1442 dev->mode_config.max_height);
1443 }
1444
1445 /* delayed so we get modes regardless of pre-fill_modes state */
1446 list_for_each_entry(mode, &connector->modes, head)
1447 mode_count++;
1448
1449 out_resp->connector_id = connector->base.id;
1450 out_resp->connector_type = connector->connector_type;
1451 out_resp->connector_type_id = connector->connector_type_id;
1452 out_resp->mm_width = connector->display_info.width_mm;
1453 out_resp->mm_height = connector->display_info.height_mm;
1454 out_resp->subpixel = connector->display_info.subpixel_order;
1455 out_resp->connection = connector->status;
1456 if (connector->encoder)
1457 out_resp->encoder_id = connector->encoder->base.id;
1458 else
1459 out_resp->encoder_id = 0;
1460
1461 /*
1462 * This ioctl is called twice, once to determine how much space is
1463 * needed, and the 2nd time to fill it.
1464 */
1465 if ((out_resp->count_modes >= mode_count) && mode_count) {
1466 copied = 0;
1467 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1468 list_for_each_entry(mode, &connector->modes, head) {
1469 drm_crtc_convert_to_umode(&u_mode, mode);
1470 if (copy_to_user(mode_ptr + copied,
1471 &u_mode, sizeof(u_mode))) {
1472 ret = -EFAULT;
1473 goto out;
1474 }
1475 copied++;
1476 }
1477 }
1478 out_resp->count_modes = mode_count;
1479
1480 if ((out_resp->count_props >= props_count) && props_count) {
1481 copied = 0;
1482 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1483 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1484 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1485 if (connector->property_ids[i] != 0) {
1486 if (put_user(connector->property_ids[i],
1487 prop_ptr + copied)) {
1488 ret = -EFAULT;
1489 goto out;
1490 }
1491
1492 if (put_user(connector->property_values[i],
1493 prop_values + copied)) {
1494 ret = -EFAULT;
1495 goto out;
1496 }
1497 copied++;
1498 }
1499 }
1500 }
1501 out_resp->count_props = props_count;
1502
1503 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1504 copied = 0;
1505 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1506 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1507 if (connector->encoder_ids[i] != 0) {
1508 if (put_user(connector->encoder_ids[i],
1509 encoder_ptr + copied)) {
1510 ret = -EFAULT;
1511 goto out;
1512 }
1513 copied++;
1514 }
1515 }
1516 }
1517 out_resp->count_encoders = encoders_count;
1518
1519 out:
1520 mutex_unlock(&dev->mode_config.mutex);
1521 return ret;
1522 }
1523
1524 int drm_mode_getencoder(struct drm_device *dev, void *data,
1525 struct drm_file *file_priv)
1526 {
1527 struct drm_mode_get_encoder *enc_resp = data;
1528 struct drm_mode_object *obj;
1529 struct drm_encoder *encoder;
1530 int ret = 0;
1531
1532 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1533 return -EINVAL;
1534
1535 mutex_lock(&dev->mode_config.mutex);
1536 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1537 DRM_MODE_OBJECT_ENCODER);
1538 if (!obj) {
1539 ret = -EINVAL;
1540 goto out;
1541 }
1542 encoder = obj_to_encoder(obj);
1543
1544 if (encoder->crtc)
1545 enc_resp->crtc_id = encoder->crtc->base.id;
1546 else
1547 enc_resp->crtc_id = 0;
1548 enc_resp->encoder_type = encoder->encoder_type;
1549 enc_resp->encoder_id = encoder->base.id;
1550 enc_resp->possible_crtcs = encoder->possible_crtcs;
1551 enc_resp->possible_clones = encoder->possible_clones;
1552
1553 out:
1554 mutex_unlock(&dev->mode_config.mutex);
1555 return ret;
1556 }
1557
1558 /**
1559 * drm_mode_getplane_res - get plane info
1560 * @dev: DRM device
1561 * @data: ioctl data
1562 * @file_priv: DRM file info
1563 *
1564 * LOCKING:
1565 * Takes mode config lock.
1566 *
1567 * Return an plane count and set of IDs.
1568 */
1569 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1570 struct drm_file *file_priv)
1571 {
1572 struct drm_mode_get_plane_res *plane_resp = data;
1573 struct drm_mode_config *config;
1574 struct drm_plane *plane;
1575 uint32_t __user *plane_ptr;
1576 int copied = 0, ret = 0;
1577
1578 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1579 return -EINVAL;
1580
1581 mutex_lock(&dev->mode_config.mutex);
1582 config = &dev->mode_config;
1583
1584 /*
1585 * This ioctl is called twice, once to determine how much space is
1586 * needed, and the 2nd time to fill it.
1587 */
1588 if (config->num_plane &&
1589 (plane_resp->count_planes >= config->num_plane)) {
1590 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1591
1592 list_for_each_entry(plane, &config->plane_list, head) {
1593 if (put_user(plane->base.id, plane_ptr + copied)) {
1594 ret = -EFAULT;
1595 goto out;
1596 }
1597 copied++;
1598 }
1599 }
1600 plane_resp->count_planes = config->num_plane;
1601
1602 out:
1603 mutex_unlock(&dev->mode_config.mutex);
1604 return ret;
1605 }
1606
1607 /**
1608 * drm_mode_getplane - get plane info
1609 * @dev: DRM device
1610 * @data: ioctl data
1611 * @file_priv: DRM file info
1612 *
1613 * LOCKING:
1614 * Takes mode config lock.
1615 *
1616 * Return plane info, including formats supported, gamma size, any
1617 * current fb, etc.
1618 */
1619 int drm_mode_getplane(struct drm_device *dev, void *data,
1620 struct drm_file *file_priv)
1621 {
1622 struct drm_mode_get_plane *plane_resp = data;
1623 struct drm_mode_object *obj;
1624 struct drm_plane *plane;
1625 uint32_t __user *format_ptr;
1626 int ret = 0;
1627
1628 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1629 return -EINVAL;
1630
1631 mutex_lock(&dev->mode_config.mutex);
1632 obj = drm_mode_object_find(dev, plane_resp->plane_id,
1633 DRM_MODE_OBJECT_PLANE);
1634 if (!obj) {
1635 ret = -ENOENT;
1636 goto out;
1637 }
1638 plane = obj_to_plane(obj);
1639
1640 if (plane->crtc)
1641 plane_resp->crtc_id = plane->crtc->base.id;
1642 else
1643 plane_resp->crtc_id = 0;
1644
1645 if (plane->fb)
1646 plane_resp->fb_id = plane->fb->base.id;
1647 else
1648 plane_resp->fb_id = 0;
1649
1650 plane_resp->plane_id = plane->base.id;
1651 plane_resp->possible_crtcs = plane->possible_crtcs;
1652 plane_resp->gamma_size = plane->gamma_size;
1653
1654 /*
1655 * This ioctl is called twice, once to determine how much space is
1656 * needed, and the 2nd time to fill it.
1657 */
1658 if (plane->format_count &&
1659 (plane_resp->count_format_types >= plane->format_count)) {
1660 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
1661 if (copy_to_user(format_ptr,
1662 plane->format_types,
1663 sizeof(uint32_t) * plane->format_count)) {
1664 ret = -EFAULT;
1665 goto out;
1666 }
1667 }
1668 plane_resp->count_format_types = plane->format_count;
1669
1670 out:
1671 mutex_unlock(&dev->mode_config.mutex);
1672 return ret;
1673 }
1674
1675 /**
1676 * drm_mode_setplane - set up or tear down an plane
1677 * @dev: DRM device
1678 * @data: ioctl data*
1679 * @file_prive: DRM file info
1680 *
1681 * LOCKING:
1682 * Takes mode config lock.
1683 *
1684 * Set plane info, including placement, fb, scaling, and other factors.
1685 * Or pass a NULL fb to disable.
1686 */
1687 int drm_mode_setplane(struct drm_device *dev, void *data,
1688 struct drm_file *file_priv)
1689 {
1690 struct drm_mode_set_plane *plane_req = data;
1691 struct drm_mode_object *obj;
1692 struct drm_plane *plane;
1693 struct drm_crtc *crtc;
1694 struct drm_framebuffer *fb;
1695 int ret = 0;
1696 unsigned int fb_width, fb_height;
1697 int i;
1698
1699 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1700 return -EINVAL;
1701
1702 mutex_lock(&dev->mode_config.mutex);
1703
1704 /*
1705 * First, find the plane, crtc, and fb objects. If not available,
1706 * we don't bother to call the driver.
1707 */
1708 obj = drm_mode_object_find(dev, plane_req->plane_id,
1709 DRM_MODE_OBJECT_PLANE);
1710 if (!obj) {
1711 DRM_DEBUG_KMS("Unknown plane ID %d\n",
1712 plane_req->plane_id);
1713 ret = -ENOENT;
1714 goto out;
1715 }
1716 plane = obj_to_plane(obj);
1717
1718 /* No fb means shut it down */
1719 if (!plane_req->fb_id) {
1720 plane->funcs->disable_plane(plane);
1721 plane->crtc = NULL;
1722 plane->fb = NULL;
1723 goto out;
1724 }
1725
1726 obj = drm_mode_object_find(dev, plane_req->crtc_id,
1727 DRM_MODE_OBJECT_CRTC);
1728 if (!obj) {
1729 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
1730 plane_req->crtc_id);
1731 ret = -ENOENT;
1732 goto out;
1733 }
1734 crtc = obj_to_crtc(obj);
1735
1736 obj = drm_mode_object_find(dev, plane_req->fb_id,
1737 DRM_MODE_OBJECT_FB);
1738 if (!obj) {
1739 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
1740 plane_req->fb_id);
1741 ret = -ENOENT;
1742 goto out;
1743 }
1744 fb = obj_to_fb(obj);
1745
1746 /* Check whether this plane supports the fb pixel format. */
1747 for (i = 0; i < plane->format_count; i++)
1748 if (fb->pixel_format == plane->format_types[i])
1749 break;
1750 if (i == plane->format_count) {
1751 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
1752 ret = -EINVAL;
1753 goto out;
1754 }
1755
1756 fb_width = fb->width << 16;
1757 fb_height = fb->height << 16;
1758
1759 /* Make sure source coordinates are inside the fb. */
1760 if (plane_req->src_w > fb_width ||
1761 plane_req->src_x > fb_width - plane_req->src_w ||
1762 plane_req->src_h > fb_height ||
1763 plane_req->src_y > fb_height - plane_req->src_h) {
1764 DRM_DEBUG_KMS("Invalid source coordinates "
1765 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
1766 plane_req->src_w >> 16,
1767 ((plane_req->src_w & 0xffff) * 15625) >> 10,
1768 plane_req->src_h >> 16,
1769 ((plane_req->src_h & 0xffff) * 15625) >> 10,
1770 plane_req->src_x >> 16,
1771 ((plane_req->src_x & 0xffff) * 15625) >> 10,
1772 plane_req->src_y >> 16,
1773 ((plane_req->src_y & 0xffff) * 15625) >> 10);
1774 ret = -ENOSPC;
1775 goto out;
1776 }
1777
1778 /* Give drivers some help against integer overflows */
1779 if (plane_req->crtc_w > INT_MAX ||
1780 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
1781 plane_req->crtc_h > INT_MAX ||
1782 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
1783 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
1784 plane_req->crtc_w, plane_req->crtc_h,
1785 plane_req->crtc_x, plane_req->crtc_y);
1786 ret = -ERANGE;
1787 goto out;
1788 }
1789
1790 ret = plane->funcs->update_plane(plane, crtc, fb,
1791 plane_req->crtc_x, plane_req->crtc_y,
1792 plane_req->crtc_w, plane_req->crtc_h,
1793 plane_req->src_x, plane_req->src_y,
1794 plane_req->src_w, plane_req->src_h);
1795 if (!ret) {
1796 plane->crtc = crtc;
1797 plane->fb = fb;
1798 }
1799
1800 out:
1801 mutex_unlock(&dev->mode_config.mutex);
1802
1803 return ret;
1804 }
1805
1806 /**
1807 * drm_mode_setcrtc - set CRTC configuration
1808 * @inode: inode from the ioctl
1809 * @filp: file * from the ioctl
1810 * @cmd: cmd from ioctl
1811 * @arg: arg from ioctl
1812 *
1813 * LOCKING:
1814 * Takes mode config lock.
1815 *
1816 * Build a new CRTC configuration based on user request.
1817 *
1818 * Called by the user via ioctl.
1819 *
1820 * RETURNS:
1821 * Zero on success, errno on failure.
1822 */
1823 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1824 struct drm_file *file_priv)
1825 {
1826 struct drm_mode_config *config = &dev->mode_config;
1827 struct drm_mode_crtc *crtc_req = data;
1828 struct drm_mode_object *obj;
1829 struct drm_crtc *crtc;
1830 struct drm_connector **connector_set = NULL, *connector;
1831 struct drm_framebuffer *fb = NULL;
1832 struct drm_display_mode *mode = NULL;
1833 struct drm_mode_set set;
1834 uint32_t __user *set_connectors_ptr;
1835 int ret = 0;
1836 int i;
1837
1838 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1839 return -EINVAL;
1840
1841 /* For some reason crtc x/y offsets are signed internally. */
1842 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
1843 return -ERANGE;
1844
1845 mutex_lock(&dev->mode_config.mutex);
1846 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1847 DRM_MODE_OBJECT_CRTC);
1848 if (!obj) {
1849 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1850 ret = -EINVAL;
1851 goto out;
1852 }
1853 crtc = obj_to_crtc(obj);
1854 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1855
1856 if (crtc_req->mode_valid) {
1857 /* If we have a mode we need a framebuffer. */
1858 /* If we pass -1, set the mode with the currently bound fb */
1859 if (crtc_req->fb_id == -1) {
1860 if (!crtc->fb) {
1861 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
1862 ret = -EINVAL;
1863 goto out;
1864 }
1865 fb = crtc->fb;
1866 } else {
1867 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1868 DRM_MODE_OBJECT_FB);
1869 if (!obj) {
1870 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1871 crtc_req->fb_id);
1872 ret = -EINVAL;
1873 goto out;
1874 }
1875 fb = obj_to_fb(obj);
1876 }
1877
1878 mode = drm_mode_create(dev);
1879 if (!mode) {
1880 ret = -ENOMEM;
1881 goto out;
1882 }
1883
1884 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
1885 if (ret) {
1886 DRM_DEBUG_KMS("Invalid mode\n");
1887 goto out;
1888 }
1889
1890 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1891
1892 if (mode->hdisplay > fb->width ||
1893 mode->vdisplay > fb->height ||
1894 crtc_req->x > fb->width - mode->hdisplay ||
1895 crtc_req->y > fb->height - mode->vdisplay) {
1896 DRM_DEBUG_KMS("Invalid CRTC viewport %ux%u+%u+%u for fb size %ux%u.\n",
1897 mode->hdisplay, mode->vdisplay,
1898 crtc_req->x, crtc_req->y,
1899 fb->width, fb->height);
1900 ret = -ENOSPC;
1901 goto out;
1902 }
1903 }
1904
1905 if (crtc_req->count_connectors == 0 && mode) {
1906 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1907 ret = -EINVAL;
1908 goto out;
1909 }
1910
1911 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1912 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1913 crtc_req->count_connectors);
1914 ret = -EINVAL;
1915 goto out;
1916 }
1917
1918 if (crtc_req->count_connectors > 0) {
1919 u32 out_id;
1920
1921 /* Avoid unbounded kernel memory allocation */
1922 if (crtc_req->count_connectors > config->num_connector) {
1923 ret = -EINVAL;
1924 goto out;
1925 }
1926
1927 connector_set = kmalloc(crtc_req->count_connectors *
1928 sizeof(struct drm_connector *),
1929 GFP_KERNEL);
1930 if (!connector_set) {
1931 ret = -ENOMEM;
1932 goto out;
1933 }
1934
1935 for (i = 0; i < crtc_req->count_connectors; i++) {
1936 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
1937 if (get_user(out_id, &set_connectors_ptr[i])) {
1938 ret = -EFAULT;
1939 goto out;
1940 }
1941
1942 obj = drm_mode_object_find(dev, out_id,
1943 DRM_MODE_OBJECT_CONNECTOR);
1944 if (!obj) {
1945 DRM_DEBUG_KMS("Connector id %d unknown\n",
1946 out_id);
1947 ret = -EINVAL;
1948 goto out;
1949 }
1950 connector = obj_to_connector(obj);
1951 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1952 connector->base.id,
1953 drm_get_connector_name(connector));
1954
1955 connector_set[i] = connector;
1956 }
1957 }
1958
1959 set.crtc = crtc;
1960 set.x = crtc_req->x;
1961 set.y = crtc_req->y;
1962 set.mode = mode;
1963 set.connectors = connector_set;
1964 set.num_connectors = crtc_req->count_connectors;
1965 set.fb = fb;
1966 ret = crtc->funcs->set_config(&set);
1967
1968 out:
1969 kfree(connector_set);
1970 drm_mode_destroy(dev, mode);
1971 mutex_unlock(&dev->mode_config.mutex);
1972 return ret;
1973 }
1974
1975 int drm_mode_cursor_ioctl(struct drm_device *dev,
1976 void *data, struct drm_file *file_priv)
1977 {
1978 struct drm_mode_cursor *req = data;
1979 struct drm_mode_object *obj;
1980 struct drm_crtc *crtc;
1981 int ret = 0;
1982
1983 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1984 return -EINVAL;
1985
1986 if (!req->flags)
1987 return -EINVAL;
1988
1989 mutex_lock(&dev->mode_config.mutex);
1990 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1991 if (!obj) {
1992 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1993 ret = -EINVAL;
1994 goto out;
1995 }
1996 crtc = obj_to_crtc(obj);
1997
1998 if (req->flags & DRM_MODE_CURSOR_BO) {
1999 if (!crtc->funcs->cursor_set) {
2000 ret = -ENXIO;
2001 goto out;
2002 }
2003 /* Turns off the cursor if handle is 0 */
2004 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2005 req->width, req->height);
2006 }
2007
2008 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2009 if (crtc->funcs->cursor_move) {
2010 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2011 } else {
2012 ret = -EFAULT;
2013 goto out;
2014 }
2015 }
2016 out:
2017 mutex_unlock(&dev->mode_config.mutex);
2018 return ret;
2019 }
2020
2021 /* Original addfb only supported RGB formats, so figure out which one */
2022 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2023 {
2024 uint32_t fmt;
2025
2026 switch (bpp) {
2027 case 8:
2028 fmt = DRM_FORMAT_RGB332;
2029 break;
2030 case 16:
2031 if (depth == 15)
2032 fmt = DRM_FORMAT_XRGB1555;
2033 else
2034 fmt = DRM_FORMAT_RGB565;
2035 break;
2036 case 24:
2037 fmt = DRM_FORMAT_RGB888;
2038 break;
2039 case 32:
2040 if (depth == 24)
2041 fmt = DRM_FORMAT_XRGB8888;
2042 else if (depth == 30)
2043 fmt = DRM_FORMAT_XRGB2101010;
2044 else
2045 fmt = DRM_FORMAT_ARGB8888;
2046 break;
2047 default:
2048 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2049 fmt = DRM_FORMAT_XRGB8888;
2050 break;
2051 }
2052
2053 return fmt;
2054 }
2055 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2056
2057 /**
2058 * drm_mode_addfb - add an FB to the graphics configuration
2059 * @inode: inode from the ioctl
2060 * @filp: file * from the ioctl
2061 * @cmd: cmd from ioctl
2062 * @arg: arg from ioctl
2063 *
2064 * LOCKING:
2065 * Takes mode config lock.
2066 *
2067 * Add a new FB to the specified CRTC, given a user request.
2068 *
2069 * Called by the user via ioctl.
2070 *
2071 * RETURNS:
2072 * Zero on success, errno on failure.
2073 */
2074 int drm_mode_addfb(struct drm_device *dev,
2075 void *data, struct drm_file *file_priv)
2076 {
2077 struct drm_mode_fb_cmd *or = data;
2078 struct drm_mode_fb_cmd2 r = {};
2079 struct drm_mode_config *config = &dev->mode_config;
2080 struct drm_framebuffer *fb;
2081 int ret = 0;
2082
2083 /* Use new struct with format internally */
2084 r.fb_id = or->fb_id;
2085 r.width = or->width;
2086 r.height = or->height;
2087 r.pitches[0] = or->pitch;
2088 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2089 r.handles[0] = or->handle;
2090
2091 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2092 return -EINVAL;
2093
2094 if ((config->min_width > r.width) || (r.width > config->max_width))
2095 return -EINVAL;
2096
2097 if ((config->min_height > r.height) || (r.height > config->max_height))
2098 return -EINVAL;
2099
2100 mutex_lock(&dev->mode_config.mutex);
2101
2102 /* TODO check buffer is sufficiently large */
2103 /* TODO setup destructor callback */
2104
2105 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2106 if (IS_ERR(fb)) {
2107 DRM_DEBUG_KMS("could not create framebuffer\n");
2108 ret = PTR_ERR(fb);
2109 goto out;
2110 }
2111
2112 or->fb_id = fb->base.id;
2113 list_add(&fb->filp_head, &file_priv->fbs);
2114 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2115
2116 out:
2117 mutex_unlock(&dev->mode_config.mutex);
2118 return ret;
2119 }
2120
2121 static int format_check(struct drm_mode_fb_cmd2 *r)
2122 {
2123 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2124
2125 switch (format) {
2126 case DRM_FORMAT_C8:
2127 case DRM_FORMAT_RGB332:
2128 case DRM_FORMAT_BGR233:
2129 case DRM_FORMAT_XRGB4444:
2130 case DRM_FORMAT_XBGR4444:
2131 case DRM_FORMAT_RGBX4444:
2132 case DRM_FORMAT_BGRX4444:
2133 case DRM_FORMAT_ARGB4444:
2134 case DRM_FORMAT_ABGR4444:
2135 case DRM_FORMAT_RGBA4444:
2136 case DRM_FORMAT_BGRA4444:
2137 case DRM_FORMAT_XRGB1555:
2138 case DRM_FORMAT_XBGR1555:
2139 case DRM_FORMAT_RGBX5551:
2140 case DRM_FORMAT_BGRX5551:
2141 case DRM_FORMAT_ARGB1555:
2142 case DRM_FORMAT_ABGR1555:
2143 case DRM_FORMAT_RGBA5551:
2144 case DRM_FORMAT_BGRA5551:
2145 case DRM_FORMAT_RGB565:
2146 case DRM_FORMAT_BGR565:
2147 case DRM_FORMAT_RGB888:
2148 case DRM_FORMAT_BGR888:
2149 case DRM_FORMAT_XRGB8888:
2150 case DRM_FORMAT_XBGR8888:
2151 case DRM_FORMAT_RGBX8888:
2152 case DRM_FORMAT_BGRX8888:
2153 case DRM_FORMAT_ARGB8888:
2154 case DRM_FORMAT_ABGR8888:
2155 case DRM_FORMAT_RGBA8888:
2156 case DRM_FORMAT_BGRA8888:
2157 case DRM_FORMAT_XRGB2101010:
2158 case DRM_FORMAT_XBGR2101010:
2159 case DRM_FORMAT_RGBX1010102:
2160 case DRM_FORMAT_BGRX1010102:
2161 case DRM_FORMAT_ARGB2101010:
2162 case DRM_FORMAT_ABGR2101010:
2163 case DRM_FORMAT_RGBA1010102:
2164 case DRM_FORMAT_BGRA1010102:
2165 case DRM_FORMAT_YUYV:
2166 case DRM_FORMAT_YVYU:
2167 case DRM_FORMAT_UYVY:
2168 case DRM_FORMAT_VYUY:
2169 case DRM_FORMAT_AYUV:
2170 case DRM_FORMAT_NV12:
2171 case DRM_FORMAT_NV21:
2172 case DRM_FORMAT_NV16:
2173 case DRM_FORMAT_NV61:
2174 case DRM_FORMAT_YUV410:
2175 case DRM_FORMAT_YVU410:
2176 case DRM_FORMAT_YUV411:
2177 case DRM_FORMAT_YVU411:
2178 case DRM_FORMAT_YUV420:
2179 case DRM_FORMAT_YVU420:
2180 case DRM_FORMAT_YUV422:
2181 case DRM_FORMAT_YVU422:
2182 case DRM_FORMAT_YUV444:
2183 case DRM_FORMAT_YVU444:
2184 return 0;
2185 default:
2186 return -EINVAL;
2187 }
2188 }
2189
2190 static int framebuffer_check(struct drm_mode_fb_cmd2 *r)
2191 {
2192 int ret, hsub, vsub, num_planes, i;
2193
2194 ret = format_check(r);
2195 if (ret) {
2196 DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format);
2197 return ret;
2198 }
2199
2200 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2201 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2202 num_planes = drm_format_num_planes(r->pixel_format);
2203
2204 if (r->width == 0 || r->width % hsub) {
2205 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2206 return -EINVAL;
2207 }
2208
2209 if (r->height == 0 || r->height % vsub) {
2210 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2211 return -EINVAL;
2212 }
2213
2214 for (i = 0; i < num_planes; i++) {
2215 unsigned int width = r->width / (i != 0 ? hsub : 1);
2216
2217 if (!r->handles[i]) {
2218 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2219 return -EINVAL;
2220 }
2221
2222 if (r->pitches[i] < drm_format_plane_cpp(r->pixel_format, i) * width) {
2223 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2224 return -EINVAL;
2225 }
2226 }
2227
2228 return 0;
2229 }
2230
2231 /**
2232 * drm_mode_addfb2 - add an FB to the graphics configuration
2233 * @inode: inode from the ioctl
2234 * @filp: file * from the ioctl
2235 * @cmd: cmd from ioctl
2236 * @arg: arg from ioctl
2237 *
2238 * LOCKING:
2239 * Takes mode config lock.
2240 *
2241 * Add a new FB to the specified CRTC, given a user request with format.
2242 *
2243 * Called by the user via ioctl.
2244 *
2245 * RETURNS:
2246 * Zero on success, errno on failure.
2247 */
2248 int drm_mode_addfb2(struct drm_device *dev,
2249 void *data, struct drm_file *file_priv)
2250 {
2251 struct drm_mode_fb_cmd2 *r = data;
2252 struct drm_mode_config *config = &dev->mode_config;
2253 struct drm_framebuffer *fb;
2254 int ret = 0;
2255
2256 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2257 return -EINVAL;
2258
2259 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2260 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2261 r->width, config->min_width, config->max_width);
2262 return -EINVAL;
2263 }
2264 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2265 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2266 r->height, config->min_height, config->max_height);
2267 return -EINVAL;
2268 }
2269
2270 ret = framebuffer_check(r);
2271 if (ret)
2272 return ret;
2273
2274 mutex_lock(&dev->mode_config.mutex);
2275
2276 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2277 if (IS_ERR(fb)) {
2278 DRM_DEBUG_KMS("could not create framebuffer\n");
2279 ret = PTR_ERR(fb);
2280 goto out;
2281 }
2282
2283 r->fb_id = fb->base.id;
2284 list_add(&fb->filp_head, &file_priv->fbs);
2285 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2286
2287 out:
2288 mutex_unlock(&dev->mode_config.mutex);
2289 return ret;
2290 }
2291
2292 /**
2293 * drm_mode_rmfb - remove an FB from the configuration
2294 * @inode: inode from the ioctl
2295 * @filp: file * from the ioctl
2296 * @cmd: cmd from ioctl
2297 * @arg: arg from ioctl
2298 *
2299 * LOCKING:
2300 * Takes mode config lock.
2301 *
2302 * Remove the FB specified by the user.
2303 *
2304 * Called by the user via ioctl.
2305 *
2306 * RETURNS:
2307 * Zero on success, errno on failure.
2308 */
2309 int drm_mode_rmfb(struct drm_device *dev,
2310 void *data, struct drm_file *file_priv)
2311 {
2312 struct drm_mode_object *obj;
2313 struct drm_framebuffer *fb = NULL;
2314 struct drm_framebuffer *fbl = NULL;
2315 uint32_t *id = data;
2316 int ret = 0;
2317 int found = 0;
2318
2319 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2320 return -EINVAL;
2321
2322 mutex_lock(&dev->mode_config.mutex);
2323 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
2324 /* TODO check that we really get a framebuffer back. */
2325 if (!obj) {
2326 ret = -EINVAL;
2327 goto out;
2328 }
2329 fb = obj_to_fb(obj);
2330
2331 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2332 if (fb == fbl)
2333 found = 1;
2334
2335 if (!found) {
2336 ret = -EINVAL;
2337 goto out;
2338 }
2339
2340 /* TODO release all crtc connected to the framebuffer */
2341 /* TODO unhock the destructor from the buffer object */
2342
2343 list_del(&fb->filp_head);
2344 fb->funcs->destroy(fb);
2345
2346 out:
2347 mutex_unlock(&dev->mode_config.mutex);
2348 return ret;
2349 }
2350
2351 /**
2352 * drm_mode_getfb - get FB info
2353 * @inode: inode from the ioctl
2354 * @filp: file * from the ioctl
2355 * @cmd: cmd from ioctl
2356 * @arg: arg from ioctl
2357 *
2358 * LOCKING:
2359 * Takes mode config lock.
2360 *
2361 * Lookup the FB given its ID and return info about it.
2362 *
2363 * Called by the user via ioctl.
2364 *
2365 * RETURNS:
2366 * Zero on success, errno on failure.
2367 */
2368 int drm_mode_getfb(struct drm_device *dev,
2369 void *data, struct drm_file *file_priv)
2370 {
2371 struct drm_mode_fb_cmd *r = data;
2372 struct drm_mode_object *obj;
2373 struct drm_framebuffer *fb;
2374 int ret = 0;
2375
2376 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2377 return -EINVAL;
2378
2379 mutex_lock(&dev->mode_config.mutex);
2380 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2381 if (!obj) {
2382 ret = -EINVAL;
2383 goto out;
2384 }
2385 fb = obj_to_fb(obj);
2386
2387 r->height = fb->height;
2388 r->width = fb->width;
2389 r->depth = fb->depth;
2390 r->bpp = fb->bits_per_pixel;
2391 r->pitch = fb->pitches[0];
2392 fb->funcs->create_handle(fb, file_priv, &r->handle);
2393
2394 out:
2395 mutex_unlock(&dev->mode_config.mutex);
2396 return ret;
2397 }
2398
2399 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2400 void *data, struct drm_file *file_priv)
2401 {
2402 struct drm_clip_rect __user *clips_ptr;
2403 struct drm_clip_rect *clips = NULL;
2404 struct drm_mode_fb_dirty_cmd *r = data;
2405 struct drm_mode_object *obj;
2406 struct drm_framebuffer *fb;
2407 unsigned flags;
2408 int num_clips;
2409 int ret = 0;
2410
2411 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2412 return -EINVAL;
2413
2414 mutex_lock(&dev->mode_config.mutex);
2415 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2416 if (!obj) {
2417 ret = -EINVAL;
2418 goto out_err1;
2419 }
2420 fb = obj_to_fb(obj);
2421
2422 num_clips = r->num_clips;
2423 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2424
2425 if (!num_clips != !clips_ptr) {
2426 ret = -EINVAL;
2427 goto out_err1;
2428 }
2429
2430 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2431
2432 /* If userspace annotates copy, clips must come in pairs */
2433 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2434 ret = -EINVAL;
2435 goto out_err1;
2436 }
2437
2438 if (num_clips && clips_ptr) {
2439 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2440 ret = -EINVAL;
2441 goto out_err1;
2442 }
2443 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2444 if (!clips) {
2445 ret = -ENOMEM;
2446 goto out_err1;
2447 }
2448
2449 ret = copy_from_user(clips, clips_ptr,
2450 num_clips * sizeof(*clips));
2451 if (ret) {
2452 ret = -EFAULT;
2453 goto out_err2;
2454 }
2455 }
2456
2457 if (fb->funcs->dirty) {
2458 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2459 clips, num_clips);
2460 } else {
2461 ret = -ENOSYS;
2462 goto out_err2;
2463 }
2464
2465 out_err2:
2466 kfree(clips);
2467 out_err1:
2468 mutex_unlock(&dev->mode_config.mutex);
2469 return ret;
2470 }
2471
2472
2473 /**
2474 * drm_fb_release - remove and free the FBs on this file
2475 * @filp: file * from the ioctl
2476 *
2477 * LOCKING:
2478 * Takes mode config lock.
2479 *
2480 * Destroy all the FBs associated with @filp.
2481 *
2482 * Called by the user via ioctl.
2483 *
2484 * RETURNS:
2485 * Zero on success, errno on failure.
2486 */
2487 void drm_fb_release(struct drm_file *priv)
2488 {
2489 struct drm_device *dev = priv->minor->dev;
2490 struct drm_framebuffer *fb, *tfb;
2491
2492 mutex_lock(&dev->mode_config.mutex);
2493 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2494 list_del(&fb->filp_head);
2495 fb->funcs->destroy(fb);
2496 }
2497 mutex_unlock(&dev->mode_config.mutex);
2498 }
2499
2500 /**
2501 * drm_mode_attachmode - add a mode to the user mode list
2502 * @dev: DRM device
2503 * @connector: connector to add the mode to
2504 * @mode: mode to add
2505 *
2506 * Add @mode to @connector's user mode list.
2507 */
2508 static void drm_mode_attachmode(struct drm_device *dev,
2509 struct drm_connector *connector,
2510 struct drm_display_mode *mode)
2511 {
2512 list_add_tail(&mode->head, &connector->user_modes);
2513 }
2514
2515 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
2516 const struct drm_display_mode *mode)
2517 {
2518 struct drm_connector *connector;
2519 int ret = 0;
2520 struct drm_display_mode *dup_mode, *next;
2521 LIST_HEAD(list);
2522
2523 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2524 if (!connector->encoder)
2525 continue;
2526 if (connector->encoder->crtc == crtc) {
2527 dup_mode = drm_mode_duplicate(dev, mode);
2528 if (!dup_mode) {
2529 ret = -ENOMEM;
2530 goto out;
2531 }
2532 list_add_tail(&dup_mode->head, &list);
2533 }
2534 }
2535
2536 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2537 if (!connector->encoder)
2538 continue;
2539 if (connector->encoder->crtc == crtc)
2540 list_move_tail(list.next, &connector->user_modes);
2541 }
2542
2543 WARN_ON(!list_empty(&list));
2544
2545 out:
2546 list_for_each_entry_safe(dup_mode, next, &list, head)
2547 drm_mode_destroy(dev, dup_mode);
2548
2549 return ret;
2550 }
2551 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2552
2553 static int drm_mode_detachmode(struct drm_device *dev,
2554 struct drm_connector *connector,
2555 struct drm_display_mode *mode)
2556 {
2557 int found = 0;
2558 int ret = 0;
2559 struct drm_display_mode *match_mode, *t;
2560
2561 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
2562 if (drm_mode_equal(match_mode, mode)) {
2563 list_del(&match_mode->head);
2564 drm_mode_destroy(dev, match_mode);
2565 found = 1;
2566 break;
2567 }
2568 }
2569
2570 if (!found)
2571 ret = -EINVAL;
2572
2573 return ret;
2574 }
2575
2576 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2577 {
2578 struct drm_connector *connector;
2579
2580 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2581 drm_mode_detachmode(dev, connector, mode);
2582 }
2583 return 0;
2584 }
2585 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2586
2587 /**
2588 * drm_fb_attachmode - Attach a user mode to an connector
2589 * @inode: inode from the ioctl
2590 * @filp: file * from the ioctl
2591 * @cmd: cmd from ioctl
2592 * @arg: arg from ioctl
2593 *
2594 * This attaches a user specified mode to an connector.
2595 * Called by the user via ioctl.
2596 *
2597 * RETURNS:
2598 * Zero on success, errno on failure.
2599 */
2600 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2601 void *data, struct drm_file *file_priv)
2602 {
2603 struct drm_mode_mode_cmd *mode_cmd = data;
2604 struct drm_connector *connector;
2605 struct drm_display_mode *mode;
2606 struct drm_mode_object *obj;
2607 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2608 int ret = 0;
2609
2610 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2611 return -EINVAL;
2612
2613 mutex_lock(&dev->mode_config.mutex);
2614
2615 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2616 if (!obj) {
2617 ret = -EINVAL;
2618 goto out;
2619 }
2620 connector = obj_to_connector(obj);
2621
2622 mode = drm_mode_create(dev);
2623 if (!mode) {
2624 ret = -ENOMEM;
2625 goto out;
2626 }
2627
2628 ret = drm_crtc_convert_umode(mode, umode);
2629 if (ret) {
2630 DRM_DEBUG_KMS("Invalid mode\n");
2631 drm_mode_destroy(dev, mode);
2632 goto out;
2633 }
2634
2635 drm_mode_attachmode(dev, connector, mode);
2636 out:
2637 mutex_unlock(&dev->mode_config.mutex);
2638 return ret;
2639 }
2640
2641
2642 /**
2643 * drm_fb_detachmode - Detach a user specified mode from an connector
2644 * @inode: inode from the ioctl
2645 * @filp: file * from the ioctl
2646 * @cmd: cmd from ioctl
2647 * @arg: arg from ioctl
2648 *
2649 * Called by the user via ioctl.
2650 *
2651 * RETURNS:
2652 * Zero on success, errno on failure.
2653 */
2654 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2655 void *data, struct drm_file *file_priv)
2656 {
2657 struct drm_mode_object *obj;
2658 struct drm_mode_mode_cmd *mode_cmd = data;
2659 struct drm_connector *connector;
2660 struct drm_display_mode mode;
2661 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2662 int ret = 0;
2663
2664 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2665 return -EINVAL;
2666
2667 mutex_lock(&dev->mode_config.mutex);
2668
2669 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2670 if (!obj) {
2671 ret = -EINVAL;
2672 goto out;
2673 }
2674 connector = obj_to_connector(obj);
2675
2676 ret = drm_crtc_convert_umode(&mode, umode);
2677 if (ret) {
2678 DRM_DEBUG_KMS("Invalid mode\n");
2679 goto out;
2680 }
2681
2682 ret = drm_mode_detachmode(dev, connector, &mode);
2683 out:
2684 mutex_unlock(&dev->mode_config.mutex);
2685 return ret;
2686 }
2687
2688 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2689 const char *name, int num_values)
2690 {
2691 struct drm_property *property = NULL;
2692 int ret;
2693
2694 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2695 if (!property)
2696 return NULL;
2697
2698 if (num_values) {
2699 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2700 if (!property->values)
2701 goto fail;
2702 }
2703
2704 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2705 if (ret)
2706 goto fail;
2707
2708 property->flags = flags;
2709 property->num_values = num_values;
2710 INIT_LIST_HEAD(&property->enum_blob_list);
2711
2712 if (name) {
2713 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2714 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2715 }
2716
2717 list_add_tail(&property->head, &dev->mode_config.property_list);
2718 return property;
2719 fail:
2720 kfree(property->values);
2721 kfree(property);
2722 return NULL;
2723 }
2724 EXPORT_SYMBOL(drm_property_create);
2725
2726 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
2727 const char *name,
2728 const struct drm_prop_enum_list *props,
2729 int num_values)
2730 {
2731 struct drm_property *property;
2732 int i, ret;
2733
2734 flags |= DRM_MODE_PROP_ENUM;
2735
2736 property = drm_property_create(dev, flags, name, num_values);
2737 if (!property)
2738 return NULL;
2739
2740 for (i = 0; i < num_values; i++) {
2741 ret = drm_property_add_enum(property, i,
2742 props[i].type,
2743 props[i].name);
2744 if (ret) {
2745 drm_property_destroy(dev, property);
2746 return NULL;
2747 }
2748 }
2749
2750 return property;
2751 }
2752 EXPORT_SYMBOL(drm_property_create_enum);
2753
2754 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
2755 const char *name,
2756 uint64_t min, uint64_t max)
2757 {
2758 struct drm_property *property;
2759
2760 flags |= DRM_MODE_PROP_RANGE;
2761
2762 property = drm_property_create(dev, flags, name, 2);
2763 if (!property)
2764 return NULL;
2765
2766 property->values[0] = min;
2767 property->values[1] = max;
2768
2769 return property;
2770 }
2771 EXPORT_SYMBOL(drm_property_create_range);
2772
2773 int drm_property_add_enum(struct drm_property *property, int index,
2774 uint64_t value, const char *name)
2775 {
2776 struct drm_property_enum *prop_enum;
2777
2778 if (!(property->flags & DRM_MODE_PROP_ENUM))
2779 return -EINVAL;
2780
2781 if (!list_empty(&property->enum_blob_list)) {
2782 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2783 if (prop_enum->value == value) {
2784 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2785 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2786 return 0;
2787 }
2788 }
2789 }
2790
2791 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2792 if (!prop_enum)
2793 return -ENOMEM;
2794
2795 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2796 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2797 prop_enum->value = value;
2798
2799 property->values[index] = value;
2800 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2801 return 0;
2802 }
2803 EXPORT_SYMBOL(drm_property_add_enum);
2804
2805 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2806 {
2807 struct drm_property_enum *prop_enum, *pt;
2808
2809 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2810 list_del(&prop_enum->head);
2811 kfree(prop_enum);
2812 }
2813
2814 if (property->num_values)
2815 kfree(property->values);
2816 drm_mode_object_put(dev, &property->base);
2817 list_del(&property->head);
2818 kfree(property);
2819 }
2820 EXPORT_SYMBOL(drm_property_destroy);
2821
2822 int drm_connector_attach_property(struct drm_connector *connector,
2823 struct drm_property *property, uint64_t init_val)
2824 {
2825 int i;
2826
2827 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2828 if (connector->property_ids[i] == 0) {
2829 connector->property_ids[i] = property->base.id;
2830 connector->property_values[i] = init_val;
2831 break;
2832 }
2833 }
2834
2835 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2836 return -EINVAL;
2837 return 0;
2838 }
2839 EXPORT_SYMBOL(drm_connector_attach_property);
2840
2841 int drm_connector_property_set_value(struct drm_connector *connector,
2842 struct drm_property *property, uint64_t value)
2843 {
2844 int i;
2845
2846 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2847 if (connector->property_ids[i] == property->base.id) {
2848 connector->property_values[i] = value;
2849 break;
2850 }
2851 }
2852
2853 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2854 return -EINVAL;
2855 return 0;
2856 }
2857 EXPORT_SYMBOL(drm_connector_property_set_value);
2858
2859 int drm_connector_property_get_value(struct drm_connector *connector,
2860 struct drm_property *property, uint64_t *val)
2861 {
2862 int i;
2863
2864 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2865 if (connector->property_ids[i] == property->base.id) {
2866 *val = connector->property_values[i];
2867 break;
2868 }
2869 }
2870
2871 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2872 return -EINVAL;
2873 return 0;
2874 }
2875 EXPORT_SYMBOL(drm_connector_property_get_value);
2876
2877 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2878 void *data, struct drm_file *file_priv)
2879 {
2880 struct drm_mode_object *obj;
2881 struct drm_mode_get_property *out_resp = data;
2882 struct drm_property *property;
2883 int enum_count = 0;
2884 int blob_count = 0;
2885 int value_count = 0;
2886 int ret = 0, i;
2887 int copied;
2888 struct drm_property_enum *prop_enum;
2889 struct drm_mode_property_enum __user *enum_ptr;
2890 struct drm_property_blob *prop_blob;
2891 uint32_t __user *blob_id_ptr;
2892 uint64_t __user *values_ptr;
2893 uint32_t __user *blob_length_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->prop_id, DRM_MODE_OBJECT_PROPERTY);
2900 if (!obj) {
2901 ret = -EINVAL;
2902 goto done;
2903 }
2904 property = obj_to_property(obj);
2905
2906 if (property->flags & DRM_MODE_PROP_ENUM) {
2907 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2908 enum_count++;
2909 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2910 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2911 blob_count++;
2912 }
2913
2914 value_count = property->num_values;
2915
2916 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2917 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2918 out_resp->flags = property->flags;
2919
2920 if ((out_resp->count_values >= value_count) && value_count) {
2921 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
2922 for (i = 0; i < value_count; i++) {
2923 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2924 ret = -EFAULT;
2925 goto done;
2926 }
2927 }
2928 }
2929 out_resp->count_values = value_count;
2930
2931 if (property->flags & DRM_MODE_PROP_ENUM) {
2932 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2933 copied = 0;
2934 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
2935 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2936
2937 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2938 ret = -EFAULT;
2939 goto done;
2940 }
2941
2942 if (copy_to_user(&enum_ptr[copied].name,
2943 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2944 ret = -EFAULT;
2945 goto done;
2946 }
2947 copied++;
2948 }
2949 }
2950 out_resp->count_enum_blobs = enum_count;
2951 }
2952
2953 if (property->flags & DRM_MODE_PROP_BLOB) {
2954 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2955 copied = 0;
2956 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
2957 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
2958
2959 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2960 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2961 ret = -EFAULT;
2962 goto done;
2963 }
2964
2965 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2966 ret = -EFAULT;
2967 goto done;
2968 }
2969
2970 copied++;
2971 }
2972 }
2973 out_resp->count_enum_blobs = blob_count;
2974 }
2975 done:
2976 mutex_unlock(&dev->mode_config.mutex);
2977 return ret;
2978 }
2979
2980 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2981 void *data)
2982 {
2983 struct drm_property_blob *blob;
2984 int ret;
2985
2986 if (!length || !data)
2987 return NULL;
2988
2989 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2990 if (!blob)
2991 return NULL;
2992
2993 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2994 if (ret) {
2995 kfree(blob);
2996 return NULL;
2997 }
2998
2999 blob->length = length;
3000
3001 memcpy(blob->data, data, length);
3002
3003 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3004 return blob;
3005 }
3006
3007 static void drm_property_destroy_blob(struct drm_device *dev,
3008 struct drm_property_blob *blob)
3009 {
3010 drm_mode_object_put(dev, &blob->base);
3011 list_del(&blob->head);
3012 kfree(blob);
3013 }
3014
3015 int drm_mode_getblob_ioctl(struct drm_device *dev,
3016 void *data, struct drm_file *file_priv)
3017 {
3018 struct drm_mode_object *obj;
3019 struct drm_mode_get_blob *out_resp = data;
3020 struct drm_property_blob *blob;
3021 int ret = 0;
3022 void __user *blob_ptr;
3023
3024 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3025 return -EINVAL;
3026
3027 mutex_lock(&dev->mode_config.mutex);
3028 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3029 if (!obj) {
3030 ret = -EINVAL;
3031 goto done;
3032 }
3033 blob = obj_to_blob(obj);
3034
3035 if (out_resp->length == blob->length) {
3036 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3037 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3038 ret = -EFAULT;
3039 goto done;
3040 }
3041 }
3042 out_resp->length = blob->length;
3043
3044 done:
3045 mutex_unlock(&dev->mode_config.mutex);
3046 return ret;
3047 }
3048
3049 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3050 struct edid *edid)
3051 {
3052 struct drm_device *dev = connector->dev;
3053 int ret = 0, size;
3054
3055 if (connector->edid_blob_ptr)
3056 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3057
3058 /* Delete edid, when there is none. */
3059 if (!edid) {
3060 connector->edid_blob_ptr = NULL;
3061 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
3062 return ret;
3063 }
3064
3065 size = EDID_LENGTH * (1 + edid->extensions);
3066 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3067 size, edid);
3068
3069 ret = drm_connector_property_set_value(connector,
3070 dev->mode_config.edid_property,
3071 connector->edid_blob_ptr->base.id);
3072
3073 return ret;
3074 }
3075 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3076
3077 static bool drm_property_change_is_valid(struct drm_property *property,
3078 __u64 value)
3079 {
3080 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3081 return false;
3082 if (property->flags & DRM_MODE_PROP_RANGE) {
3083 if (value < property->values[0] || value > property->values[1])
3084 return false;
3085 return true;
3086 } else {
3087 int i;
3088 for (i = 0; i < property->num_values; i++)
3089 if (property->values[i] == value)
3090 return true;
3091 return false;
3092 }
3093 }
3094
3095 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3096 void *data, struct drm_file *file_priv)
3097 {
3098 struct drm_mode_connector_set_property *out_resp = data;
3099 struct drm_mode_object *obj;
3100 struct drm_property *property;
3101 struct drm_connector *connector;
3102 int ret = -EINVAL;
3103 int i;
3104
3105 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3106 return -EINVAL;
3107
3108 mutex_lock(&dev->mode_config.mutex);
3109
3110 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
3111 if (!obj) {
3112 goto out;
3113 }
3114 connector = obj_to_connector(obj);
3115
3116 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
3117 if (connector->property_ids[i] == out_resp->prop_id)
3118 break;
3119 }
3120
3121 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
3122 goto out;
3123 }
3124
3125 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3126 if (!obj) {
3127 goto out;
3128 }
3129 property = obj_to_property(obj);
3130
3131 if (!drm_property_change_is_valid(property, out_resp->value))
3132 goto out;
3133
3134 /* Do DPMS ourselves */
3135 if (property == connector->dev->mode_config.dpms_property) {
3136 if (connector->funcs->dpms)
3137 (*connector->funcs->dpms)(connector, (int) out_resp->value);
3138 ret = 0;
3139 } else if (connector->funcs->set_property)
3140 ret = connector->funcs->set_property(connector, property, out_resp->value);
3141
3142 /* store the property value if successful */
3143 if (!ret)
3144 drm_connector_property_set_value(connector, property, out_resp->value);
3145 out:
3146 mutex_unlock(&dev->mode_config.mutex);
3147 return ret;
3148 }
3149
3150 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3151 struct drm_encoder *encoder)
3152 {
3153 int i;
3154
3155 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3156 if (connector->encoder_ids[i] == 0) {
3157 connector->encoder_ids[i] = encoder->base.id;
3158 return 0;
3159 }
3160 }
3161 return -ENOMEM;
3162 }
3163 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3164
3165 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3166 struct drm_encoder *encoder)
3167 {
3168 int i;
3169 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3170 if (connector->encoder_ids[i] == encoder->base.id) {
3171 connector->encoder_ids[i] = 0;
3172 if (connector->encoder == encoder)
3173 connector->encoder = NULL;
3174 break;
3175 }
3176 }
3177 }
3178 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3179
3180 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3181 int gamma_size)
3182 {
3183 crtc->gamma_size = gamma_size;
3184
3185 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3186 if (!crtc->gamma_store) {
3187 crtc->gamma_size = 0;
3188 return -ENOMEM;
3189 }
3190
3191 return 0;
3192 }
3193 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3194
3195 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3196 void *data, struct drm_file *file_priv)
3197 {
3198 struct drm_mode_crtc_lut *crtc_lut = data;
3199 struct drm_mode_object *obj;
3200 struct drm_crtc *crtc;
3201 void *r_base, *g_base, *b_base;
3202 int size;
3203 int ret = 0;
3204
3205 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3206 return -EINVAL;
3207
3208 mutex_lock(&dev->mode_config.mutex);
3209 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3210 if (!obj) {
3211 ret = -EINVAL;
3212 goto out;
3213 }
3214 crtc = obj_to_crtc(obj);
3215
3216 /* memcpy into gamma store */
3217 if (crtc_lut->gamma_size != crtc->gamma_size) {
3218 ret = -EINVAL;
3219 goto out;
3220 }
3221
3222 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3223 r_base = crtc->gamma_store;
3224 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3225 ret = -EFAULT;
3226 goto out;
3227 }
3228
3229 g_base = r_base + size;
3230 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3231 ret = -EFAULT;
3232 goto out;
3233 }
3234
3235 b_base = g_base + size;
3236 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3237 ret = -EFAULT;
3238 goto out;
3239 }
3240
3241 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
3242
3243 out:
3244 mutex_unlock(&dev->mode_config.mutex);
3245 return ret;
3246
3247 }
3248
3249 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3250 void *data, struct drm_file *file_priv)
3251 {
3252 struct drm_mode_crtc_lut *crtc_lut = data;
3253 struct drm_mode_object *obj;
3254 struct drm_crtc *crtc;
3255 void *r_base, *g_base, *b_base;
3256 int size;
3257 int ret = 0;
3258
3259 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3260 return -EINVAL;
3261
3262 mutex_lock(&dev->mode_config.mutex);
3263 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3264 if (!obj) {
3265 ret = -EINVAL;
3266 goto out;
3267 }
3268 crtc = obj_to_crtc(obj);
3269
3270 /* memcpy into gamma store */
3271 if (crtc_lut->gamma_size != crtc->gamma_size) {
3272 ret = -EINVAL;
3273 goto out;
3274 }
3275
3276 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3277 r_base = crtc->gamma_store;
3278 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
3279 ret = -EFAULT;
3280 goto out;
3281 }
3282
3283 g_base = r_base + size;
3284 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
3285 ret = -EFAULT;
3286 goto out;
3287 }
3288
3289 b_base = g_base + size;
3290 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
3291 ret = -EFAULT;
3292 goto out;
3293 }
3294 out:
3295 mutex_unlock(&dev->mode_config.mutex);
3296 return ret;
3297 }
3298
3299 int drm_mode_page_flip_ioctl(struct drm_device *dev,
3300 void *data, struct drm_file *file_priv)
3301 {
3302 struct drm_mode_crtc_page_flip *page_flip = data;
3303 struct drm_mode_object *obj;
3304 struct drm_crtc *crtc;
3305 struct drm_framebuffer *fb;
3306 struct drm_pending_vblank_event *e = NULL;
3307 unsigned long flags;
3308 int ret = -EINVAL;
3309
3310 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
3311 page_flip->reserved != 0)
3312 return -EINVAL;
3313
3314 mutex_lock(&dev->mode_config.mutex);
3315 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3316 if (!obj)
3317 goto out;
3318 crtc = obj_to_crtc(obj);
3319
3320 if (crtc->fb == NULL) {
3321 /* The framebuffer is currently unbound, presumably
3322 * due to a hotplug event, that userspace has not
3323 * yet discovered.
3324 */
3325 ret = -EBUSY;
3326 goto out;
3327 }
3328
3329 if (crtc->funcs->page_flip == NULL)
3330 goto out;
3331
3332 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
3333 if (!obj)
3334 goto out;
3335 fb = obj_to_fb(obj);
3336
3337 if (crtc->mode.hdisplay > fb->width ||
3338 crtc->mode.vdisplay > fb->height ||
3339 crtc->x > fb->width - crtc->mode.hdisplay ||
3340 crtc->y > fb->height - crtc->mode.vdisplay) {
3341 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d.\n",
3342 fb->width, fb->height,
3343 crtc->mode.hdisplay, crtc->mode.vdisplay,
3344 crtc->x, crtc->y);
3345 ret = -ENOSPC;
3346 goto out;
3347 }
3348
3349 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3350 ret = -ENOMEM;
3351 spin_lock_irqsave(&dev->event_lock, flags);
3352 if (file_priv->event_space < sizeof e->event) {
3353 spin_unlock_irqrestore(&dev->event_lock, flags);
3354 goto out;
3355 }
3356 file_priv->event_space -= sizeof e->event;
3357 spin_unlock_irqrestore(&dev->event_lock, flags);
3358
3359 e = kzalloc(sizeof *e, GFP_KERNEL);
3360 if (e == NULL) {
3361 spin_lock_irqsave(&dev->event_lock, flags);
3362 file_priv->event_space += sizeof e->event;
3363 spin_unlock_irqrestore(&dev->event_lock, flags);
3364 goto out;
3365 }
3366
3367 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
3368 e->event.base.length = sizeof e->event;
3369 e->event.user_data = page_flip->user_data;
3370 e->base.event = &e->event.base;
3371 e->base.file_priv = file_priv;
3372 e->base.destroy =
3373 (void (*) (struct drm_pending_event *)) kfree;
3374 }
3375
3376 ret = crtc->funcs->page_flip(crtc, fb, e);
3377 if (ret) {
3378 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3379 spin_lock_irqsave(&dev->event_lock, flags);
3380 file_priv->event_space += sizeof e->event;
3381 spin_unlock_irqrestore(&dev->event_lock, flags);
3382 kfree(e);
3383 }
3384 }
3385
3386 out:
3387 mutex_unlock(&dev->mode_config.mutex);
3388 return ret;
3389 }
3390
3391 void drm_mode_config_reset(struct drm_device *dev)
3392 {
3393 struct drm_crtc *crtc;
3394 struct drm_encoder *encoder;
3395 struct drm_connector *connector;
3396
3397 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
3398 if (crtc->funcs->reset)
3399 crtc->funcs->reset(crtc);
3400
3401 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
3402 if (encoder->funcs->reset)
3403 encoder->funcs->reset(encoder);
3404
3405 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
3406 if (connector->funcs->reset)
3407 connector->funcs->reset(connector);
3408 }
3409 EXPORT_SYMBOL(drm_mode_config_reset);
3410
3411 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
3412 void *data, struct drm_file *file_priv)
3413 {
3414 struct drm_mode_create_dumb *args = data;
3415
3416 if (!dev->driver->dumb_create)
3417 return -ENOSYS;
3418 return dev->driver->dumb_create(file_priv, dev, args);
3419 }
3420
3421 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
3422 void *data, struct drm_file *file_priv)
3423 {
3424 struct drm_mode_map_dumb *args = data;
3425
3426 /* call driver ioctl to get mmap offset */
3427 if (!dev->driver->dumb_map_offset)
3428 return -ENOSYS;
3429
3430 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
3431 }
3432
3433 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
3434 void *data, struct drm_file *file_priv)
3435 {
3436 struct drm_mode_destroy_dumb *args = data;
3437
3438 if (!dev->driver->dumb_destroy)
3439 return -ENOSYS;
3440
3441 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
3442 }
3443
3444 /*
3445 * Just need to support RGB formats here for compat with code that doesn't
3446 * use pixel formats directly yet.
3447 */
3448 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
3449 int *bpp)
3450 {
3451 switch (format) {
3452 case DRM_FORMAT_RGB332:
3453 case DRM_FORMAT_BGR233:
3454 *depth = 8;
3455 *bpp = 8;
3456 break;
3457 case DRM_FORMAT_XRGB1555:
3458 case DRM_FORMAT_XBGR1555:
3459 case DRM_FORMAT_RGBX5551:
3460 case DRM_FORMAT_BGRX5551:
3461 case DRM_FORMAT_ARGB1555:
3462 case DRM_FORMAT_ABGR1555:
3463 case DRM_FORMAT_RGBA5551:
3464 case DRM_FORMAT_BGRA5551:
3465 *depth = 15;
3466 *bpp = 16;
3467 break;
3468 case DRM_FORMAT_RGB565:
3469 case DRM_FORMAT_BGR565:
3470 *depth = 16;
3471 *bpp = 16;
3472 break;
3473 case DRM_FORMAT_RGB888:
3474 case DRM_FORMAT_BGR888:
3475 *depth = 24;
3476 *bpp = 24;
3477 break;
3478 case DRM_FORMAT_XRGB8888:
3479 case DRM_FORMAT_XBGR8888:
3480 case DRM_FORMAT_RGBX8888:
3481 case DRM_FORMAT_BGRX8888:
3482 *depth = 24;
3483 *bpp = 32;
3484 break;
3485 case DRM_FORMAT_XRGB2101010:
3486 case DRM_FORMAT_XBGR2101010:
3487 case DRM_FORMAT_RGBX1010102:
3488 case DRM_FORMAT_BGRX1010102:
3489 case DRM_FORMAT_ARGB2101010:
3490 case DRM_FORMAT_ABGR2101010:
3491 case DRM_FORMAT_RGBA1010102:
3492 case DRM_FORMAT_BGRA1010102:
3493 *depth = 30;
3494 *bpp = 32;
3495 break;
3496 case DRM_FORMAT_ARGB8888:
3497 case DRM_FORMAT_ABGR8888:
3498 case DRM_FORMAT_RGBA8888:
3499 case DRM_FORMAT_BGRA8888:
3500 *depth = 32;
3501 *bpp = 32;
3502 break;
3503 default:
3504 DRM_DEBUG_KMS("unsupported pixel format\n");
3505 *depth = 0;
3506 *bpp = 0;
3507 break;
3508 }
3509 }
3510 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
3511
3512 /**
3513 * drm_format_num_planes - get the number of planes for format
3514 * @format: pixel format (DRM_FORMAT_*)
3515 *
3516 * RETURNS:
3517 * The number of planes used by the specified pixel format.
3518 */
3519 int drm_format_num_planes(uint32_t format)
3520 {
3521 switch (format) {
3522 case DRM_FORMAT_YUV410:
3523 case DRM_FORMAT_YVU410:
3524 case DRM_FORMAT_YUV411:
3525 case DRM_FORMAT_YVU411:
3526 case DRM_FORMAT_YUV420:
3527 case DRM_FORMAT_YVU420:
3528 case DRM_FORMAT_YUV422:
3529 case DRM_FORMAT_YVU422:
3530 case DRM_FORMAT_YUV444:
3531 case DRM_FORMAT_YVU444:
3532 return 3;
3533 case DRM_FORMAT_NV12:
3534 case DRM_FORMAT_NV21:
3535 case DRM_FORMAT_NV16:
3536 case DRM_FORMAT_NV61:
3537 return 2;
3538 default:
3539 return 1;
3540 }
3541 }
3542 EXPORT_SYMBOL(drm_format_num_planes);
3543
3544 /**
3545 * drm_format_plane_cpp - determine the bytes per pixel value
3546 * @format: pixel format (DRM_FORMAT_*)
3547 * @plane: plane index
3548 *
3549 * RETURNS:
3550 * The bytes per pixel value for the specified plane.
3551 */
3552 int drm_format_plane_cpp(uint32_t format, int plane)
3553 {
3554 unsigned int depth;
3555 int bpp;
3556
3557 if (plane >= drm_format_num_planes(format))
3558 return 0;
3559
3560 switch (format) {
3561 case DRM_FORMAT_YUYV:
3562 case DRM_FORMAT_YVYU:
3563 case DRM_FORMAT_UYVY:
3564 case DRM_FORMAT_VYUY:
3565 return 2;
3566 case DRM_FORMAT_NV12:
3567 case DRM_FORMAT_NV21:
3568 case DRM_FORMAT_NV16:
3569 case DRM_FORMAT_NV61:
3570 return plane ? 2 : 1;
3571 case DRM_FORMAT_YUV410:
3572 case DRM_FORMAT_YVU410:
3573 case DRM_FORMAT_YUV411:
3574 case DRM_FORMAT_YVU411:
3575 case DRM_FORMAT_YUV420:
3576 case DRM_FORMAT_YVU420:
3577 case DRM_FORMAT_YUV422:
3578 case DRM_FORMAT_YVU422:
3579 case DRM_FORMAT_YUV444:
3580 case DRM_FORMAT_YVU444:
3581 return 1;
3582 default:
3583 drm_fb_get_bpp_depth(format, &depth, &bpp);
3584 return bpp >> 3;
3585 }
3586 }
3587 EXPORT_SYMBOL(drm_format_plane_cpp);
3588
3589 /**
3590 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
3591 * @format: pixel format (DRM_FORMAT_*)
3592 *
3593 * RETURNS:
3594 * The horizontal chroma subsampling factor for the
3595 * specified pixel format.
3596 */
3597 int drm_format_horz_chroma_subsampling(uint32_t format)
3598 {
3599 switch (format) {
3600 case DRM_FORMAT_YUV411:
3601 case DRM_FORMAT_YVU411:
3602 case DRM_FORMAT_YUV410:
3603 case DRM_FORMAT_YVU410:
3604 return 4;
3605 case DRM_FORMAT_YUYV:
3606 case DRM_FORMAT_YVYU:
3607 case DRM_FORMAT_UYVY:
3608 case DRM_FORMAT_VYUY:
3609 case DRM_FORMAT_NV12:
3610 case DRM_FORMAT_NV21:
3611 case DRM_FORMAT_NV16:
3612 case DRM_FORMAT_NV61:
3613 case DRM_FORMAT_YUV422:
3614 case DRM_FORMAT_YVU422:
3615 case DRM_FORMAT_YUV420:
3616 case DRM_FORMAT_YVU420:
3617 return 2;
3618 default:
3619 return 1;
3620 }
3621 }
3622 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
3623
3624 /**
3625 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
3626 * @format: pixel format (DRM_FORMAT_*)
3627 *
3628 * RETURNS:
3629 * The vertical chroma subsampling factor for the
3630 * specified pixel format.
3631 */
3632 int drm_format_vert_chroma_subsampling(uint32_t format)
3633 {
3634 switch (format) {
3635 case DRM_FORMAT_YUV410:
3636 case DRM_FORMAT_YVU410:
3637 return 4;
3638 case DRM_FORMAT_YUV420:
3639 case DRM_FORMAT_YVU420:
3640 case DRM_FORMAT_NV12:
3641 case DRM_FORMAT_NV21:
3642 return 2;
3643 default:
3644 return 1;
3645 }
3646 }
3647 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);