?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ARM: 7409/1: Do not call flush_cache_user_range with mmap_sem held
[linux/fpc-iii.git] / drivers / gpu / drm / drm_crtc.c
blob1367ced8c26ddd8d74558a23fbeb8afec46cac22
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 "drm.h"
35 #include "drmP.h"
36 #include "drm_crtc.h"
37 #include "drm_edid.h"
38
39 struct drm_prop_enum_list {
40 int type;
41 char *name;
42 };
43
44 /* Avoid boilerplate. I'm tired of typing. */
45 #define DRM_ENUM_NAME_FN(fnname, list) \
46 char *fnname(int val) \
47 { \
48 int i; \
49 for (i = 0; i < ARRAY_SIZE(list); i++) { \
50 if (list[i].type == val) \
51 return list[i].name; \
52 } \
53 return "(unknown)"; \
54 }
55
56 /*
57 * Global properties
58 */
59 static struct drm_prop_enum_list drm_dpms_enum_list[] =
60 { { DRM_MODE_DPMS_ON, "On" },
61 { DRM_MODE_DPMS_STANDBY, "Standby" },
62 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
63 { DRM_MODE_DPMS_OFF, "Off" }
64 };
65
66 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
67
68 /*
69 * Optional properties
70 */
71 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
72 {
73 { DRM_MODE_SCALE_NONE, "None" },
74 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
75 { DRM_MODE_SCALE_CENTER, "Center" },
76 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
77 };
78
79 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
80 {
81 { DRM_MODE_DITHERING_OFF, "Off" },
82 { DRM_MODE_DITHERING_ON, "On" },
83 { DRM_MODE_DITHERING_AUTO, "Automatic" },
84 };
85
86 /*
87 * Non-global properties, but "required" for certain connectors.
88 */
89 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
90 {
91 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
92 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
93 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
94 };
95
96 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
97
98 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
99 {
100 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
101 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
102 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
103 };
104
105 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
106 drm_dvi_i_subconnector_enum_list)
107
108 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
109 {
110 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
111 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
112 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
113 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
114 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
115 };
116
117 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
118
119 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
120 {
121 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
126 };
127
128 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
129 drm_tv_subconnector_enum_list)
130
131 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
132 { DRM_MODE_DIRTY_OFF, "Off" },
133 { DRM_MODE_DIRTY_ON, "On" },
134 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
135 };
136
137 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
138 drm_dirty_info_enum_list)
139
140 struct drm_conn_prop_enum_list {
141 int type;
142 char *name;
143 int count;
144 };
145
146 /*
147 * Connector and encoder types.
148 */
149 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
150 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
151 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
152 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
153 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
154 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
155 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
156 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
157 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
158 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
159 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
160 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
161 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
162 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
163 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
164 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
165 };
166
167 static struct drm_prop_enum_list drm_encoder_enum_list[] =
168 { { DRM_MODE_ENCODER_NONE, "None" },
169 { DRM_MODE_ENCODER_DAC, "DAC" },
170 { DRM_MODE_ENCODER_TMDS, "TMDS" },
171 { DRM_MODE_ENCODER_LVDS, "LVDS" },
172 { DRM_MODE_ENCODER_TVDAC, "TV" },
173 };
174
175 char *drm_get_encoder_name(struct drm_encoder *encoder)
176 {
177 static char buf[32];
178
179 snprintf(buf, 32, "%s-%d",
180 drm_encoder_enum_list[encoder->encoder_type].name,
181 encoder->base.id);
182 return buf;
183 }
184 EXPORT_SYMBOL(drm_get_encoder_name);
185
186 char *drm_get_connector_name(struct drm_connector *connector)
187 {
188 static char buf[32];
189
190 snprintf(buf, 32, "%s-%d",
191 drm_connector_enum_list[connector->connector_type].name,
192 connector->connector_type_id);
193 return buf;
194 }
195 EXPORT_SYMBOL(drm_get_connector_name);
196
197 char *drm_get_connector_status_name(enum drm_connector_status status)
198 {
199 if (status == connector_status_connected)
200 return "connected";
201 else if (status == connector_status_disconnected)
202 return "disconnected";
203 else
204 return "unknown";
205 }
206
207 /**
208 * drm_mode_object_get - allocate a new identifier
209 * @dev: DRM device
210 * @ptr: object pointer, used to generate unique ID
211 * @type: object type
212 *
213 * LOCKING:
214 *
215 * Create a unique identifier based on @ptr in @dev's identifier space. Used
216 * for tracking modes, CRTCs and connectors.
217 *
218 * RETURNS:
219 * New unique (relative to other objects in @dev) integer identifier for the
220 * object.
221 */
222 static int drm_mode_object_get(struct drm_device *dev,
223 struct drm_mode_object *obj, uint32_t obj_type)
224 {
225 int new_id = 0;
226 int ret;
227
228 again:
229 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
230 DRM_ERROR("Ran out memory getting a mode number\n");
231 return -EINVAL;
232 }
233
234 mutex_lock(&dev->mode_config.idr_mutex);
235 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
236 mutex_unlock(&dev->mode_config.idr_mutex);
237 if (ret == -EAGAIN)
238 goto again;
239
240 obj->id = new_id;
241 obj->type = obj_type;
242 return 0;
243 }
244
245 /**
246 * drm_mode_object_put - free an identifer
247 * @dev: DRM device
248 * @id: ID to free
249 *
250 * LOCKING:
251 * Caller must hold DRM mode_config lock.
252 *
253 * Free @id from @dev's unique identifier pool.
254 */
255 static void drm_mode_object_put(struct drm_device *dev,
256 struct drm_mode_object *object)
257 {
258 mutex_lock(&dev->mode_config.idr_mutex);
259 idr_remove(&dev->mode_config.crtc_idr, object->id);
260 mutex_unlock(&dev->mode_config.idr_mutex);
261 }
262
263 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
264 uint32_t id, uint32_t type)
265 {
266 struct drm_mode_object *obj = NULL;
267
268 mutex_lock(&dev->mode_config.idr_mutex);
269 obj = idr_find(&dev->mode_config.crtc_idr, id);
270 if (!obj || (obj->type != type) || (obj->id != id))
271 obj = NULL;
272 mutex_unlock(&dev->mode_config.idr_mutex);
273
274 return obj;
275 }
276 EXPORT_SYMBOL(drm_mode_object_find);
277
278 /**
279 * drm_framebuffer_init - initialize a framebuffer
280 * @dev: DRM device
281 *
282 * LOCKING:
283 * Caller must hold mode config lock.
284 *
285 * Allocates an ID for the framebuffer's parent mode object, sets its mode
286 * functions & device file and adds it to the master fd list.
287 *
288 * RETURNS:
289 * Zero on success, error code on failure.
290 */
291 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
292 const struct drm_framebuffer_funcs *funcs)
293 {
294 int ret;
295
296 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
297 if (ret) {
298 return ret;
299 }
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_mode_set set;
325 int ret;
326
327 /* remove from any CRTC */
328 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
329 if (crtc->fb == fb) {
330 /* should turn off the crtc */
331 memset(&set, 0, sizeof(struct drm_mode_set));
332 set.crtc = crtc;
333 set.fb = NULL;
334 ret = crtc->funcs->set_config(&set);
335 if (ret)
336 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
337 }
338 }
339
340 drm_mode_object_put(dev, &fb->base);
341 list_del(&fb->head);
342 dev->mode_config.num_fb--;
343 }
344 EXPORT_SYMBOL(drm_framebuffer_cleanup);
345
346 /**
347 * drm_crtc_init - Initialise a new CRTC object
348 * @dev: DRM device
349 * @crtc: CRTC object to init
350 * @funcs: callbacks for the new CRTC
351 *
352 * LOCKING:
353 * Caller must hold mode config lock.
354 *
355 * Inits a new object created as base part of an driver crtc object.
356 */
357 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
358 const struct drm_crtc_funcs *funcs)
359 {
360 crtc->dev = dev;
361 crtc->funcs = funcs;
362
363 mutex_lock(&dev->mode_config.mutex);
364 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
365
366 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
367 dev->mode_config.num_crtc++;
368 mutex_unlock(&dev->mode_config.mutex);
369 }
370 EXPORT_SYMBOL(drm_crtc_init);
371
372 /**
373 * drm_crtc_cleanup - Cleans up the core crtc usage.
374 * @crtc: CRTC to cleanup
375 *
376 * LOCKING:
377 * Caller must hold mode config lock.
378 *
379 * Cleanup @crtc. Removes from drm modesetting space
380 * does NOT free object, caller does that.
381 */
382 void drm_crtc_cleanup(struct drm_crtc *crtc)
383 {
384 struct drm_device *dev = crtc->dev;
385
386 if (crtc->gamma_store) {
387 kfree(crtc->gamma_store);
388 crtc->gamma_store = NULL;
389 }
390
391 drm_mode_object_put(dev, &crtc->base);
392 list_del(&crtc->head);
393 dev->mode_config.num_crtc--;
394 }
395 EXPORT_SYMBOL(drm_crtc_cleanup);
396
397 /**
398 * drm_mode_probed_add - add a mode to a connector's probed mode list
399 * @connector: connector the new mode
400 * @mode: mode data
401 *
402 * LOCKING:
403 * Caller must hold mode config lock.
404 *
405 * Add @mode to @connector's mode list for later use.
406 */
407 void drm_mode_probed_add(struct drm_connector *connector,
408 struct drm_display_mode *mode)
409 {
410 list_add(&mode->head, &connector->probed_modes);
411 }
412 EXPORT_SYMBOL(drm_mode_probed_add);
413
414 /**
415 * drm_mode_remove - remove and free a mode
416 * @connector: connector list to modify
417 * @mode: mode to remove
418 *
419 * LOCKING:
420 * Caller must hold mode config lock.
421 *
422 * Remove @mode from @connector's mode list, then free it.
423 */
424 void drm_mode_remove(struct drm_connector *connector,
425 struct drm_display_mode *mode)
426 {
427 list_del(&mode->head);
428 kfree(mode);
429 }
430 EXPORT_SYMBOL(drm_mode_remove);
431
432 /**
433 * drm_connector_init - Init a preallocated connector
434 * @dev: DRM device
435 * @connector: the connector to init
436 * @funcs: callbacks for this connector
437 * @name: user visible name of the connector
438 *
439 * LOCKING:
440 * Caller must hold @dev's mode_config lock.
441 *
442 * Initialises a preallocated connector. Connectors should be
443 * subclassed as part of driver connector objects.
444 */
445 void drm_connector_init(struct drm_device *dev,
446 struct drm_connector *connector,
447 const struct drm_connector_funcs *funcs,
448 int connector_type)
449 {
450 mutex_lock(&dev->mode_config.mutex);
451
452 connector->dev = dev;
453 connector->funcs = funcs;
454 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
455 connector->connector_type = connector_type;
456 connector->connector_type_id =
457 ++drm_connector_enum_list[connector_type].count; /* TODO */
458 INIT_LIST_HEAD(&connector->user_modes);
459 INIT_LIST_HEAD(&connector->probed_modes);
460 INIT_LIST_HEAD(&connector->modes);
461 connector->edid_blob_ptr = NULL;
462
463 list_add_tail(&connector->head, &dev->mode_config.connector_list);
464 dev->mode_config.num_connector++;
465
466 drm_connector_attach_property(connector,
467 dev->mode_config.edid_property, 0);
468
469 drm_connector_attach_property(connector,
470 dev->mode_config.dpms_property, 0);
471
472 mutex_unlock(&dev->mode_config.mutex);
473 }
474 EXPORT_SYMBOL(drm_connector_init);
475
476 /**
477 * drm_connector_cleanup - cleans up an initialised connector
478 * @connector: connector to cleanup
479 *
480 * LOCKING:
481 * Caller must hold @dev's mode_config lock.
482 *
483 * Cleans up the connector but doesn't free the object.
484 */
485 void drm_connector_cleanup(struct drm_connector *connector)
486 {
487 struct drm_device *dev = connector->dev;
488 struct drm_display_mode *mode, *t;
489
490 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
491 drm_mode_remove(connector, mode);
492
493 list_for_each_entry_safe(mode, t, &connector->modes, head)
494 drm_mode_remove(connector, mode);
495
496 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
497 drm_mode_remove(connector, mode);
498
499 mutex_lock(&dev->mode_config.mutex);
500 drm_mode_object_put(dev, &connector->base);
501 list_del(&connector->head);
502 mutex_unlock(&dev->mode_config.mutex);
503 }
504 EXPORT_SYMBOL(drm_connector_cleanup);
505
506 void drm_encoder_init(struct drm_device *dev,
507 struct drm_encoder *encoder,
508 const struct drm_encoder_funcs *funcs,
509 int encoder_type)
510 {
511 mutex_lock(&dev->mode_config.mutex);
512
513 encoder->dev = dev;
514
515 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
516 encoder->encoder_type = encoder_type;
517 encoder->funcs = funcs;
518
519 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
520 dev->mode_config.num_encoder++;
521
522 mutex_unlock(&dev->mode_config.mutex);
523 }
524 EXPORT_SYMBOL(drm_encoder_init);
525
526 void drm_encoder_cleanup(struct drm_encoder *encoder)
527 {
528 struct drm_device *dev = encoder->dev;
529 mutex_lock(&dev->mode_config.mutex);
530 drm_mode_object_put(dev, &encoder->base);
531 list_del(&encoder->head);
532 mutex_unlock(&dev->mode_config.mutex);
533 }
534 EXPORT_SYMBOL(drm_encoder_cleanup);
535
536 /**
537 * drm_mode_create - create a new display mode
538 * @dev: DRM device
539 *
540 * LOCKING:
541 * Caller must hold DRM mode_config lock.
542 *
543 * Create a new drm_display_mode, give it an ID, and return it.
544 *
545 * RETURNS:
546 * Pointer to new mode on success, NULL on error.
547 */
548 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
549 {
550 struct drm_display_mode *nmode;
551
552 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
553 if (!nmode)
554 return NULL;
555
556 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
557 return nmode;
558 }
559 EXPORT_SYMBOL(drm_mode_create);
560
561 /**
562 * drm_mode_destroy - remove a mode
563 * @dev: DRM device
564 * @mode: mode to remove
565 *
566 * LOCKING:
567 * Caller must hold mode config lock.
568 *
569 * Free @mode's unique identifier, then free it.
570 */
571 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
572 {
573 drm_mode_object_put(dev, &mode->base);
574
575 kfree(mode);
576 }
577 EXPORT_SYMBOL(drm_mode_destroy);
578
579 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
580 {
581 struct drm_property *edid;
582 struct drm_property *dpms;
583 int i;
584
585 /*
586 * Standard properties (apply to all connectors)
587 */
588 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
589 DRM_MODE_PROP_IMMUTABLE,
590 "EDID", 0);
591 dev->mode_config.edid_property = edid;
592
593 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
594 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
595 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
596 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
597 drm_dpms_enum_list[i].name);
598 dev->mode_config.dpms_property = dpms;
599
600 return 0;
601 }
602
603 /**
604 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
605 * @dev: DRM device
606 *
607 * Called by a driver the first time a DVI-I connector is made.
608 */
609 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
610 {
611 struct drm_property *dvi_i_selector;
612 struct drm_property *dvi_i_subconnector;
613 int i;
614
615 if (dev->mode_config.dvi_i_select_subconnector_property)
616 return 0;
617
618 dvi_i_selector =
619 drm_property_create(dev, DRM_MODE_PROP_ENUM,
620 "select subconnector",
621 ARRAY_SIZE(drm_dvi_i_select_enum_list));
622 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
623 drm_property_add_enum(dvi_i_selector, i,
624 drm_dvi_i_select_enum_list[i].type,
625 drm_dvi_i_select_enum_list[i].name);
626 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
627
628 dvi_i_subconnector =
629 drm_property_create(dev, DRM_MODE_PROP_ENUM |
630 DRM_MODE_PROP_IMMUTABLE,
631 "subconnector",
632 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
633 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
634 drm_property_add_enum(dvi_i_subconnector, i,
635 drm_dvi_i_subconnector_enum_list[i].type,
636 drm_dvi_i_subconnector_enum_list[i].name);
637 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
638
639 return 0;
640 }
641 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
642
643 /**
644 * drm_create_tv_properties - create TV specific connector properties
645 * @dev: DRM device
646 * @num_modes: number of different TV formats (modes) supported
647 * @modes: array of pointers to strings containing name of each format
648 *
649 * Called by a driver's TV initialization routine, this function creates
650 * the TV specific connector properties for a given device. Caller is
651 * responsible for allocating a list of format names and passing them to
652 * this routine.
653 */
654 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
655 char *modes[])
656 {
657 struct drm_property *tv_selector;
658 struct drm_property *tv_subconnector;
659 int i;
660
661 if (dev->mode_config.tv_select_subconnector_property)
662 return 0;
663
664 /*
665 * Basic connector properties
666 */
667 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
668 "select subconnector",
669 ARRAY_SIZE(drm_tv_select_enum_list));
670 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
671 drm_property_add_enum(tv_selector, i,
672 drm_tv_select_enum_list[i].type,
673 drm_tv_select_enum_list[i].name);
674 dev->mode_config.tv_select_subconnector_property = tv_selector;
675
676 tv_subconnector =
677 drm_property_create(dev, DRM_MODE_PROP_ENUM |
678 DRM_MODE_PROP_IMMUTABLE, "subconnector",
679 ARRAY_SIZE(drm_tv_subconnector_enum_list));
680 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
681 drm_property_add_enum(tv_subconnector, i,
682 drm_tv_subconnector_enum_list[i].type,
683 drm_tv_subconnector_enum_list[i].name);
684 dev->mode_config.tv_subconnector_property = tv_subconnector;
685
686 /*
687 * Other, TV specific properties: margins & TV modes.
688 */
689 dev->mode_config.tv_left_margin_property =
690 drm_property_create(dev, DRM_MODE_PROP_RANGE,
691 "left margin", 2);
692 dev->mode_config.tv_left_margin_property->values[0] = 0;
693 dev->mode_config.tv_left_margin_property->values[1] = 100;
694
695 dev->mode_config.tv_right_margin_property =
696 drm_property_create(dev, DRM_MODE_PROP_RANGE,
697 "right margin", 2);
698 dev->mode_config.tv_right_margin_property->values[0] = 0;
699 dev->mode_config.tv_right_margin_property->values[1] = 100;
700
701 dev->mode_config.tv_top_margin_property =
702 drm_property_create(dev, DRM_MODE_PROP_RANGE,
703 "top margin", 2);
704 dev->mode_config.tv_top_margin_property->values[0] = 0;
705 dev->mode_config.tv_top_margin_property->values[1] = 100;
706
707 dev->mode_config.tv_bottom_margin_property =
708 drm_property_create(dev, DRM_MODE_PROP_RANGE,
709 "bottom margin", 2);
710 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
711 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
712
713 dev->mode_config.tv_mode_property =
714 drm_property_create(dev, DRM_MODE_PROP_ENUM,
715 "mode", num_modes);
716 for (i = 0; i < num_modes; i++)
717 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
718 i, modes[i]);
719
720 dev->mode_config.tv_brightness_property =
721 drm_property_create(dev, DRM_MODE_PROP_RANGE,
722 "brightness", 2);
723 dev->mode_config.tv_brightness_property->values[0] = 0;
724 dev->mode_config.tv_brightness_property->values[1] = 100;
725
726 dev->mode_config.tv_contrast_property =
727 drm_property_create(dev, DRM_MODE_PROP_RANGE,
728 "contrast", 2);
729 dev->mode_config.tv_contrast_property->values[0] = 0;
730 dev->mode_config.tv_contrast_property->values[1] = 100;
731
732 dev->mode_config.tv_flicker_reduction_property =
733 drm_property_create(dev, DRM_MODE_PROP_RANGE,
734 "flicker reduction", 2);
735 dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
736 dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
737
738 dev->mode_config.tv_overscan_property =
739 drm_property_create(dev, DRM_MODE_PROP_RANGE,
740 "overscan", 2);
741 dev->mode_config.tv_overscan_property->values[0] = 0;
742 dev->mode_config.tv_overscan_property->values[1] = 100;
743
744 dev->mode_config.tv_saturation_property =
745 drm_property_create(dev, DRM_MODE_PROP_RANGE,
746 "saturation", 2);
747 dev->mode_config.tv_saturation_property->values[0] = 0;
748 dev->mode_config.tv_saturation_property->values[1] = 100;
749
750 dev->mode_config.tv_hue_property =
751 drm_property_create(dev, DRM_MODE_PROP_RANGE,
752 "hue", 2);
753 dev->mode_config.tv_hue_property->values[0] = 0;
754 dev->mode_config.tv_hue_property->values[1] = 100;
755
756 return 0;
757 }
758 EXPORT_SYMBOL(drm_mode_create_tv_properties);
759
760 /**
761 * drm_mode_create_scaling_mode_property - create scaling mode property
762 * @dev: DRM device
763 *
764 * Called by a driver the first time it's needed, must be attached to desired
765 * connectors.
766 */
767 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
768 {
769 struct drm_property *scaling_mode;
770 int i;
771
772 if (dev->mode_config.scaling_mode_property)
773 return 0;
774
775 scaling_mode =
776 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
777 ARRAY_SIZE(drm_scaling_mode_enum_list));
778 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
779 drm_property_add_enum(scaling_mode, i,
780 drm_scaling_mode_enum_list[i].type,
781 drm_scaling_mode_enum_list[i].name);
782
783 dev->mode_config.scaling_mode_property = scaling_mode;
784
785 return 0;
786 }
787 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
788
789 /**
790 * drm_mode_create_dithering_property - create dithering property
791 * @dev: DRM device
792 *
793 * Called by a driver the first time it's needed, must be attached to desired
794 * connectors.
795 */
796 int drm_mode_create_dithering_property(struct drm_device *dev)
797 {
798 struct drm_property *dithering_mode;
799 int i;
800
801 if (dev->mode_config.dithering_mode_property)
802 return 0;
803
804 dithering_mode =
805 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
806 ARRAY_SIZE(drm_dithering_mode_enum_list));
807 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
808 drm_property_add_enum(dithering_mode, i,
809 drm_dithering_mode_enum_list[i].type,
810 drm_dithering_mode_enum_list[i].name);
811 dev->mode_config.dithering_mode_property = dithering_mode;
812
813 return 0;
814 }
815 EXPORT_SYMBOL(drm_mode_create_dithering_property);
816
817 /**
818 * drm_mode_create_dirty_property - create dirty property
819 * @dev: DRM device
820 *
821 * Called by a driver the first time it's needed, must be attached to desired
822 * connectors.
823 */
824 int drm_mode_create_dirty_info_property(struct drm_device *dev)
825 {
826 struct drm_property *dirty_info;
827 int i;
828
829 if (dev->mode_config.dirty_info_property)
830 return 0;
831
832 dirty_info =
833 drm_property_create(dev, DRM_MODE_PROP_ENUM |
834 DRM_MODE_PROP_IMMUTABLE,
835 "dirty",
836 ARRAY_SIZE(drm_dirty_info_enum_list));
837 for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
838 drm_property_add_enum(dirty_info, i,
839 drm_dirty_info_enum_list[i].type,
840 drm_dirty_info_enum_list[i].name);
841 dev->mode_config.dirty_info_property = dirty_info;
842
843 return 0;
844 }
845 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
846
847 /**
848 * drm_mode_config_init - initialize DRM mode_configuration structure
849 * @dev: DRM device
850 *
851 * LOCKING:
852 * None, should happen single threaded at init time.
853 *
854 * Initialize @dev's mode_config structure, used for tracking the graphics
855 * configuration of @dev.
856 */
857 void drm_mode_config_init(struct drm_device *dev)
858 {
859 mutex_init(&dev->mode_config.mutex);
860 mutex_init(&dev->mode_config.idr_mutex);
861 INIT_LIST_HEAD(&dev->mode_config.fb_list);
862 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
863 INIT_LIST_HEAD(&dev->mode_config.connector_list);
864 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
865 INIT_LIST_HEAD(&dev->mode_config.property_list);
866 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
867 idr_init(&dev->mode_config.crtc_idr);
868
869 mutex_lock(&dev->mode_config.mutex);
870 drm_mode_create_standard_connector_properties(dev);
871 mutex_unlock(&dev->mode_config.mutex);
872
873 /* Just to be sure */
874 dev->mode_config.num_fb = 0;
875 dev->mode_config.num_connector = 0;
876 dev->mode_config.num_crtc = 0;
877 dev->mode_config.num_encoder = 0;
878 }
879 EXPORT_SYMBOL(drm_mode_config_init);
880
881 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
882 {
883 uint32_t total_objects = 0;
884
885 total_objects += dev->mode_config.num_crtc;
886 total_objects += dev->mode_config.num_connector;
887 total_objects += dev->mode_config.num_encoder;
888
889 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
890 if (!group->id_list)
891 return -ENOMEM;
892
893 group->num_crtcs = 0;
894 group->num_connectors = 0;
895 group->num_encoders = 0;
896 return 0;
897 }
898
899 int drm_mode_group_init_legacy_group(struct drm_device *dev,
900 struct drm_mode_group *group)
901 {
902 struct drm_crtc *crtc;
903 struct drm_encoder *encoder;
904 struct drm_connector *connector;
905 int ret;
906
907 if ((ret = drm_mode_group_init(dev, group)))
908 return ret;
909
910 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
911 group->id_list[group->num_crtcs++] = crtc->base.id;
912
913 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
914 group->id_list[group->num_crtcs + group->num_encoders++] =
915 encoder->base.id;
916
917 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
918 group->id_list[group->num_crtcs + group->num_encoders +
919 group->num_connectors++] = connector->base.id;
920
921 return 0;
922 }
923
924 /**
925 * drm_mode_config_cleanup - free up DRM mode_config info
926 * @dev: DRM device
927 *
928 * LOCKING:
929 * Caller must hold mode config lock.
930 *
931 * Free up all the connectors and CRTCs associated with this DRM device, then
932 * free up the framebuffers and associated buffer objects.
933 *
934 * FIXME: cleanup any dangling user buffer objects too
935 */
936 void drm_mode_config_cleanup(struct drm_device *dev)
937 {
938 struct drm_connector *connector, *ot;
939 struct drm_crtc *crtc, *ct;
940 struct drm_encoder *encoder, *enct;
941 struct drm_framebuffer *fb, *fbt;
942 struct drm_property *property, *pt;
943
944 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
945 head) {
946 encoder->funcs->destroy(encoder);
947 }
948
949 list_for_each_entry_safe(connector, ot,
950 &dev->mode_config.connector_list, head) {
951 connector->funcs->destroy(connector);
952 }
953
954 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
955 head) {
956 drm_property_destroy(dev, property);
957 }
958
959 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
960 fb->funcs->destroy(fb);
961 }
962
963 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
964 crtc->funcs->destroy(crtc);
965 }
966
967 }
968 EXPORT_SYMBOL(drm_mode_config_cleanup);
969
970 /**
971 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
972 * @out: drm_mode_modeinfo struct to return to the user
973 * @in: drm_display_mode to use
974 *
975 * LOCKING:
976 * None.
977 *
978 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
979 * the user.
980 */
981 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
982 struct drm_display_mode *in)
983 {
984 out->clock = in->clock;
985 out->hdisplay = in->hdisplay;
986 out->hsync_start = in->hsync_start;
987 out->hsync_end = in->hsync_end;
988 out->htotal = in->htotal;
989 out->hskew = in->hskew;
990 out->vdisplay = in->vdisplay;
991 out->vsync_start = in->vsync_start;
992 out->vsync_end = in->vsync_end;
993 out->vtotal = in->vtotal;
994 out->vscan = in->vscan;
995 out->vrefresh = in->vrefresh;
996 out->flags = in->flags;
997 out->type = in->type;
998 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
999 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1000 }
1001
1002 /**
1003 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1004 * @out: drm_display_mode to return to the user
1005 * @in: drm_mode_modeinfo to use
1006 *
1007 * LOCKING:
1008 * None.
1009 *
1010 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1011 * the caller.
1012 */
1013 void drm_crtc_convert_umode(struct drm_display_mode *out,
1014 struct drm_mode_modeinfo *in)
1015 {
1016 out->clock = in->clock;
1017 out->hdisplay = in->hdisplay;
1018 out->hsync_start = in->hsync_start;
1019 out->hsync_end = in->hsync_end;
1020 out->htotal = in->htotal;
1021 out->hskew = in->hskew;
1022 out->vdisplay = in->vdisplay;
1023 out->vsync_start = in->vsync_start;
1024 out->vsync_end = in->vsync_end;
1025 out->vtotal = in->vtotal;
1026 out->vscan = in->vscan;
1027 out->vrefresh = in->vrefresh;
1028 out->flags = in->flags;
1029 out->type = in->type;
1030 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1031 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1032 }
1033
1034 /**
1035 * drm_mode_getresources - get graphics configuration
1036 * @inode: inode from the ioctl
1037 * @filp: file * from the ioctl
1038 * @cmd: cmd from ioctl
1039 * @arg: arg from ioctl
1040 *
1041 * LOCKING:
1042 * Takes mode config lock.
1043 *
1044 * Construct a set of configuration description structures and return
1045 * them to the user, including CRTC, connector and framebuffer configuration.
1046 *
1047 * Called by the user via ioctl.
1048 *
1049 * RETURNS:
1050 * Zero on success, errno on failure.
1051 */
1052 int drm_mode_getresources(struct drm_device *dev, void *data,
1053 struct drm_file *file_priv)
1054 {
1055 struct drm_mode_card_res *card_res = data;
1056 struct list_head *lh;
1057 struct drm_framebuffer *fb;
1058 struct drm_connector *connector;
1059 struct drm_crtc *crtc;
1060 struct drm_encoder *encoder;
1061 int ret = 0;
1062 int connector_count = 0;
1063 int crtc_count = 0;
1064 int fb_count = 0;
1065 int encoder_count = 0;
1066 int copied = 0, i;
1067 uint32_t __user *fb_id;
1068 uint32_t __user *crtc_id;
1069 uint32_t __user *connector_id;
1070 uint32_t __user *encoder_id;
1071 struct drm_mode_group *mode_group;
1072
1073 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1074 return -EINVAL;
1075
1076 mutex_lock(&dev->mode_config.mutex);
1077
1078 /*
1079 * For the non-control nodes we need to limit the list of resources
1080 * by IDs in the group list for this node
1081 */
1082 list_for_each(lh, &file_priv->fbs)
1083 fb_count++;
1084
1085 mode_group = &file_priv->master->minor->mode_group;
1086 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1087
1088 list_for_each(lh, &dev->mode_config.crtc_list)
1089 crtc_count++;
1090
1091 list_for_each(lh, &dev->mode_config.connector_list)
1092 connector_count++;
1093
1094 list_for_each(lh, &dev->mode_config.encoder_list)
1095 encoder_count++;
1096 } else {
1097
1098 crtc_count = mode_group->num_crtcs;
1099 connector_count = mode_group->num_connectors;
1100 encoder_count = mode_group->num_encoders;
1101 }
1102
1103 card_res->max_height = dev->mode_config.max_height;
1104 card_res->min_height = dev->mode_config.min_height;
1105 card_res->max_width = dev->mode_config.max_width;
1106 card_res->min_width = dev->mode_config.min_width;
1107
1108 /* handle this in 4 parts */
1109 /* FBs */
1110 if (card_res->count_fbs >= fb_count) {
1111 copied = 0;
1112 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1113 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1114 if (put_user(fb->base.id, fb_id + copied)) {
1115 ret = -EFAULT;
1116 goto out;
1117 }
1118 copied++;
1119 }
1120 }
1121 card_res->count_fbs = fb_count;
1122
1123 /* CRTCs */
1124 if (card_res->count_crtcs >= crtc_count) {
1125 copied = 0;
1126 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1127 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1128 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1129 head) {
1130 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1131 if (put_user(crtc->base.id, crtc_id + copied)) {
1132 ret = -EFAULT;
1133 goto out;
1134 }
1135 copied++;
1136 }
1137 } else {
1138 for (i = 0; i < mode_group->num_crtcs; i++) {
1139 if (put_user(mode_group->id_list[i],
1140 crtc_id + copied)) {
1141 ret = -EFAULT;
1142 goto out;
1143 }
1144 copied++;
1145 }
1146 }
1147 }
1148 card_res->count_crtcs = crtc_count;
1149
1150 /* Encoders */
1151 if (card_res->count_encoders >= encoder_count) {
1152 copied = 0;
1153 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1154 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1155 list_for_each_entry(encoder,
1156 &dev->mode_config.encoder_list,
1157 head) {
1158 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1159 drm_get_encoder_name(encoder));
1160 if (put_user(encoder->base.id, encoder_id +
1161 copied)) {
1162 ret = -EFAULT;
1163 goto out;
1164 }
1165 copied++;
1166 }
1167 } else {
1168 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1169 if (put_user(mode_group->id_list[i],
1170 encoder_id + copied)) {
1171 ret = -EFAULT;
1172 goto out;
1173 }
1174 copied++;
1175 }
1176
1177 }
1178 }
1179 card_res->count_encoders = encoder_count;
1180
1181 /* Connectors */
1182 if (card_res->count_connectors >= connector_count) {
1183 copied = 0;
1184 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1185 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1186 list_for_each_entry(connector,
1187 &dev->mode_config.connector_list,
1188 head) {
1189 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1190 connector->base.id,
1191 drm_get_connector_name(connector));
1192 if (put_user(connector->base.id,
1193 connector_id + copied)) {
1194 ret = -EFAULT;
1195 goto out;
1196 }
1197 copied++;
1198 }
1199 } else {
1200 int start = mode_group->num_crtcs +
1201 mode_group->num_encoders;
1202 for (i = start; i < start + mode_group->num_connectors; i++) {
1203 if (put_user(mode_group->id_list[i],
1204 connector_id + copied)) {
1205 ret = -EFAULT;
1206 goto out;
1207 }
1208 copied++;
1209 }
1210 }
1211 }
1212 card_res->count_connectors = connector_count;
1213
1214 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1215 card_res->count_connectors, card_res->count_encoders);
1216
1217 out:
1218 mutex_unlock(&dev->mode_config.mutex);
1219 return ret;
1220 }
1221
1222 /**
1223 * drm_mode_getcrtc - get CRTC configuration
1224 * @inode: inode from the ioctl
1225 * @filp: file * from the ioctl
1226 * @cmd: cmd from ioctl
1227 * @arg: arg from ioctl
1228 *
1229 * LOCKING:
1230 * Caller? (FIXME)
1231 *
1232 * Construct a CRTC configuration structure to return to the user.
1233 *
1234 * Called by the user via ioctl.
1235 *
1236 * RETURNS:
1237 * Zero on success, errno on failure.
1238 */
1239 int drm_mode_getcrtc(struct drm_device *dev,
1240 void *data, struct drm_file *file_priv)
1241 {
1242 struct drm_mode_crtc *crtc_resp = data;
1243 struct drm_crtc *crtc;
1244 struct drm_mode_object *obj;
1245 int ret = 0;
1246
1247 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1248 return -EINVAL;
1249
1250 mutex_lock(&dev->mode_config.mutex);
1251
1252 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1253 DRM_MODE_OBJECT_CRTC);
1254 if (!obj) {
1255 ret = -EINVAL;
1256 goto out;
1257 }
1258 crtc = obj_to_crtc(obj);
1259
1260 crtc_resp->x = crtc->x;
1261 crtc_resp->y = crtc->y;
1262 crtc_resp->gamma_size = crtc->gamma_size;
1263 if (crtc->fb)
1264 crtc_resp->fb_id = crtc->fb->base.id;
1265 else
1266 crtc_resp->fb_id = 0;
1267
1268 if (crtc->enabled) {
1269
1270 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1271 crtc_resp->mode_valid = 1;
1272
1273 } else {
1274 crtc_resp->mode_valid = 0;
1275 }
1276
1277 out:
1278 mutex_unlock(&dev->mode_config.mutex);
1279 return ret;
1280 }
1281
1282 /**
1283 * drm_mode_getconnector - get connector configuration
1284 * @inode: inode from the ioctl
1285 * @filp: file * from the ioctl
1286 * @cmd: cmd from ioctl
1287 * @arg: arg from ioctl
1288 *
1289 * LOCKING:
1290 * Caller? (FIXME)
1291 *
1292 * Construct a connector configuration structure to return to the user.
1293 *
1294 * Called by the user via ioctl.
1295 *
1296 * RETURNS:
1297 * Zero on success, errno on failure.
1298 */
1299 int drm_mode_getconnector(struct drm_device *dev, void *data,
1300 struct drm_file *file_priv)
1301 {
1302 struct drm_mode_get_connector *out_resp = data;
1303 struct drm_mode_object *obj;
1304 struct drm_connector *connector;
1305 struct drm_display_mode *mode;
1306 int mode_count = 0;
1307 int props_count = 0;
1308 int encoders_count = 0;
1309 int ret = 0;
1310 int copied = 0;
1311 int i;
1312 struct drm_mode_modeinfo u_mode;
1313 struct drm_mode_modeinfo __user *mode_ptr;
1314 uint32_t __user *prop_ptr;
1315 uint64_t __user *prop_values;
1316 uint32_t __user *encoder_ptr;
1317
1318 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1319 return -EINVAL;
1320
1321 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1322
1323 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1324
1325 mutex_lock(&dev->mode_config.mutex);
1326
1327 obj = drm_mode_object_find(dev, out_resp->connector_id,
1328 DRM_MODE_OBJECT_CONNECTOR);
1329 if (!obj) {
1330 ret = -EINVAL;
1331 goto out;
1332 }
1333 connector = obj_to_connector(obj);
1334
1335 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1336 if (connector->property_ids[i] != 0) {
1337 props_count++;
1338 }
1339 }
1340
1341 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1342 if (connector->encoder_ids[i] != 0) {
1343 encoders_count++;
1344 }
1345 }
1346
1347 if (out_resp->count_modes == 0) {
1348 connector->funcs->fill_modes(connector,
1349 dev->mode_config.max_width,
1350 dev->mode_config.max_height);
1351 }
1352
1353 /* delayed so we get modes regardless of pre-fill_modes state */
1354 list_for_each_entry(mode, &connector->modes, head)
1355 mode_count++;
1356
1357 out_resp->connector_id = connector->base.id;
1358 out_resp->connector_type = connector->connector_type;
1359 out_resp->connector_type_id = connector->connector_type_id;
1360 out_resp->mm_width = connector->display_info.width_mm;
1361 out_resp->mm_height = connector->display_info.height_mm;
1362 out_resp->subpixel = connector->display_info.subpixel_order;
1363 out_resp->connection = connector->status;
1364 if (connector->encoder)
1365 out_resp->encoder_id = connector->encoder->base.id;
1366 else
1367 out_resp->encoder_id = 0;
1368
1369 /*
1370 * This ioctl is called twice, once to determine how much space is
1371 * needed, and the 2nd time to fill it.
1372 */
1373 if ((out_resp->count_modes >= mode_count) && mode_count) {
1374 copied = 0;
1375 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1376 list_for_each_entry(mode, &connector->modes, head) {
1377 drm_crtc_convert_to_umode(&u_mode, mode);
1378 if (copy_to_user(mode_ptr + copied,
1379 &u_mode, sizeof(u_mode))) {
1380 ret = -EFAULT;
1381 goto out;
1382 }
1383 copied++;
1384 }
1385 }
1386 out_resp->count_modes = mode_count;
1387
1388 if ((out_resp->count_props >= props_count) && props_count) {
1389 copied = 0;
1390 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1391 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1392 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1393 if (connector->property_ids[i] != 0) {
1394 if (put_user(connector->property_ids[i],
1395 prop_ptr + copied)) {
1396 ret = -EFAULT;
1397 goto out;
1398 }
1399
1400 if (put_user(connector->property_values[i],
1401 prop_values + copied)) {
1402 ret = -EFAULT;
1403 goto out;
1404 }
1405 copied++;
1406 }
1407 }
1408 }
1409 out_resp->count_props = props_count;
1410
1411 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1412 copied = 0;
1413 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1414 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1415 if (connector->encoder_ids[i] != 0) {
1416 if (put_user(connector->encoder_ids[i],
1417 encoder_ptr + copied)) {
1418 ret = -EFAULT;
1419 goto out;
1420 }
1421 copied++;
1422 }
1423 }
1424 }
1425 out_resp->count_encoders = encoders_count;
1426
1427 out:
1428 mutex_unlock(&dev->mode_config.mutex);
1429 return ret;
1430 }
1431
1432 int drm_mode_getencoder(struct drm_device *dev, void *data,
1433 struct drm_file *file_priv)
1434 {
1435 struct drm_mode_get_encoder *enc_resp = data;
1436 struct drm_mode_object *obj;
1437 struct drm_encoder *encoder;
1438 int ret = 0;
1439
1440 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1441 return -EINVAL;
1442
1443 mutex_lock(&dev->mode_config.mutex);
1444 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1445 DRM_MODE_OBJECT_ENCODER);
1446 if (!obj) {
1447 ret = -EINVAL;
1448 goto out;
1449 }
1450 encoder = obj_to_encoder(obj);
1451
1452 if (encoder->crtc)
1453 enc_resp->crtc_id = encoder->crtc->base.id;
1454 else
1455 enc_resp->crtc_id = 0;
1456 enc_resp->encoder_type = encoder->encoder_type;
1457 enc_resp->encoder_id = encoder->base.id;
1458 enc_resp->possible_crtcs = encoder->possible_crtcs;
1459 enc_resp->possible_clones = encoder->possible_clones;
1460
1461 out:
1462 mutex_unlock(&dev->mode_config.mutex);
1463 return ret;
1464 }
1465
1466 /**
1467 * drm_mode_setcrtc - set CRTC configuration
1468 * @inode: inode from the ioctl
1469 * @filp: file * from the ioctl
1470 * @cmd: cmd from ioctl
1471 * @arg: arg from ioctl
1472 *
1473 * LOCKING:
1474 * Caller? (FIXME)
1475 *
1476 * Build a new CRTC configuration based on user request.
1477 *
1478 * Called by the user via ioctl.
1479 *
1480 * RETURNS:
1481 * Zero on success, errno on failure.
1482 */
1483 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1484 struct drm_file *file_priv)
1485 {
1486 struct drm_mode_config *config = &dev->mode_config;
1487 struct drm_mode_crtc *crtc_req = data;
1488 struct drm_mode_object *obj;
1489 struct drm_crtc *crtc, *crtcfb;
1490 struct drm_connector **connector_set = NULL, *connector;
1491 struct drm_framebuffer *fb = NULL;
1492 struct drm_display_mode *mode = NULL;
1493 struct drm_mode_set set;
1494 uint32_t __user *set_connectors_ptr;
1495 int ret = 0;
1496 int i;
1497
1498 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1499 return -EINVAL;
1500
1501 mutex_lock(&dev->mode_config.mutex);
1502 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1503 DRM_MODE_OBJECT_CRTC);
1504 if (!obj) {
1505 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1506 ret = -EINVAL;
1507 goto out;
1508 }
1509 crtc = obj_to_crtc(obj);
1510 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1511
1512 if (crtc_req->mode_valid) {
1513 /* If we have a mode we need a framebuffer. */
1514 /* If we pass -1, set the mode with the currently bound fb */
1515 if (crtc_req->fb_id == -1) {
1516 list_for_each_entry(crtcfb,
1517 &dev->mode_config.crtc_list, head) {
1518 if (crtcfb == crtc) {
1519 DRM_DEBUG_KMS("Using current fb for "
1520 "setmode\n");
1521 fb = crtc->fb;
1522 }
1523 }
1524 } else {
1525 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1526 DRM_MODE_OBJECT_FB);
1527 if (!obj) {
1528 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1529 crtc_req->fb_id);
1530 ret = -EINVAL;
1531 goto out;
1532 }
1533 fb = obj_to_fb(obj);
1534 }
1535
1536 mode = drm_mode_create(dev);
1537 drm_crtc_convert_umode(mode, &crtc_req->mode);
1538 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1539 }
1540
1541 if (crtc_req->count_connectors == 0 && mode) {
1542 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1543 ret = -EINVAL;
1544 goto out;
1545 }
1546
1547 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1548 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1549 crtc_req->count_connectors);
1550 ret = -EINVAL;
1551 goto out;
1552 }
1553
1554 if (crtc_req->count_connectors > 0) {
1555 u32 out_id;
1556
1557 /* Avoid unbounded kernel memory allocation */
1558 if (crtc_req->count_connectors > config->num_connector) {
1559 ret = -EINVAL;
1560 goto out;
1561 }
1562
1563 connector_set = kmalloc(crtc_req->count_connectors *
1564 sizeof(struct drm_connector *),
1565 GFP_KERNEL);
1566 if (!connector_set) {
1567 ret = -ENOMEM;
1568 goto out;
1569 }
1570
1571 for (i = 0; i < crtc_req->count_connectors; i++) {
1572 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1573 if (get_user(out_id, &set_connectors_ptr[i])) {
1574 ret = -EFAULT;
1575 goto out;
1576 }
1577
1578 obj = drm_mode_object_find(dev, out_id,
1579 DRM_MODE_OBJECT_CONNECTOR);
1580 if (!obj) {
1581 DRM_DEBUG_KMS("Connector id %d unknown\n",
1582 out_id);
1583 ret = -EINVAL;
1584 goto out;
1585 }
1586 connector = obj_to_connector(obj);
1587 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1588 connector->base.id,
1589 drm_get_connector_name(connector));
1590
1591 connector_set[i] = connector;
1592 }
1593 }
1594
1595 set.crtc = crtc;
1596 set.x = crtc_req->x;
1597 set.y = crtc_req->y;
1598 set.mode = mode;
1599 set.connectors = connector_set;
1600 set.num_connectors = crtc_req->count_connectors;
1601 set.fb = fb;
1602 ret = crtc->funcs->set_config(&set);
1603
1604 out:
1605 kfree(connector_set);
1606 mutex_unlock(&dev->mode_config.mutex);
1607 return ret;
1608 }
1609
1610 int drm_mode_cursor_ioctl(struct drm_device *dev,
1611 void *data, struct drm_file *file_priv)
1612 {
1613 struct drm_mode_cursor *req = data;
1614 struct drm_mode_object *obj;
1615 struct drm_crtc *crtc;
1616 int ret = 0;
1617
1618 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1619 return -EINVAL;
1620
1621 if (!req->flags) {
1622 DRM_ERROR("no operation set\n");
1623 return -EINVAL;
1624 }
1625
1626 mutex_lock(&dev->mode_config.mutex);
1627 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1628 if (!obj) {
1629 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1630 ret = -EINVAL;
1631 goto out;
1632 }
1633 crtc = obj_to_crtc(obj);
1634
1635 if (req->flags & DRM_MODE_CURSOR_BO) {
1636 if (!crtc->funcs->cursor_set) {
1637 DRM_ERROR("crtc does not support cursor\n");
1638 ret = -ENXIO;
1639 goto out;
1640 }
1641 /* Turns off the cursor if handle is 0 */
1642 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1643 req->width, req->height);
1644 }
1645
1646 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1647 if (crtc->funcs->cursor_move) {
1648 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1649 } else {
1650 DRM_ERROR("crtc does not support cursor\n");
1651 ret = -EFAULT;
1652 goto out;
1653 }
1654 }
1655 out:
1656 mutex_unlock(&dev->mode_config.mutex);
1657 return ret;
1658 }
1659
1660 /**
1661 * drm_mode_addfb - add an FB to the graphics configuration
1662 * @inode: inode from the ioctl
1663 * @filp: file * from the ioctl
1664 * @cmd: cmd from ioctl
1665 * @arg: arg from ioctl
1666 *
1667 * LOCKING:
1668 * Takes mode config lock.
1669 *
1670 * Add a new FB to the specified CRTC, given a user request.
1671 *
1672 * Called by the user via ioctl.
1673 *
1674 * RETURNS:
1675 * Zero on success, errno on failure.
1676 */
1677 int drm_mode_addfb(struct drm_device *dev,
1678 void *data, struct drm_file *file_priv)
1679 {
1680 struct drm_mode_fb_cmd *r = data;
1681 struct drm_mode_config *config = &dev->mode_config;
1682 struct drm_framebuffer *fb;
1683 int ret = 0;
1684
1685 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1686 return -EINVAL;
1687
1688 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1689 DRM_ERROR("mode new framebuffer width not within limits\n");
1690 return -EINVAL;
1691 }
1692 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1693 DRM_ERROR("mode new framebuffer height not within limits\n");
1694 return -EINVAL;
1695 }
1696
1697 mutex_lock(&dev->mode_config.mutex);
1698
1699 /* TODO check buffer is sufficiently large */
1700 /* TODO setup destructor callback */
1701
1702 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1703 if (IS_ERR(fb)) {
1704 DRM_ERROR("could not create framebuffer\n");
1705 ret = PTR_ERR(fb);
1706 goto out;
1707 }
1708
1709 r->fb_id = fb->base.id;
1710 list_add(&fb->filp_head, &file_priv->fbs);
1711 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
1712
1713 out:
1714 mutex_unlock(&dev->mode_config.mutex);
1715 return ret;
1716 }
1717
1718 /**
1719 * drm_mode_rmfb - remove an FB from the configuration
1720 * @inode: inode from the ioctl
1721 * @filp: file * from the ioctl
1722 * @cmd: cmd from ioctl
1723 * @arg: arg from ioctl
1724 *
1725 * LOCKING:
1726 * Takes mode config lock.
1727 *
1728 * Remove the FB specified by the user.
1729 *
1730 * Called by the user via ioctl.
1731 *
1732 * RETURNS:
1733 * Zero on success, errno on failure.
1734 */
1735 int drm_mode_rmfb(struct drm_device *dev,
1736 void *data, struct drm_file *file_priv)
1737 {
1738 struct drm_mode_object *obj;
1739 struct drm_framebuffer *fb = NULL;
1740 struct drm_framebuffer *fbl = NULL;
1741 uint32_t *id = data;
1742 int ret = 0;
1743 int found = 0;
1744
1745 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1746 return -EINVAL;
1747
1748 mutex_lock(&dev->mode_config.mutex);
1749 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1750 /* TODO check that we really get a framebuffer back. */
1751 if (!obj) {
1752 DRM_ERROR("mode invalid framebuffer id\n");
1753 ret = -EINVAL;
1754 goto out;
1755 }
1756 fb = obj_to_fb(obj);
1757
1758 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1759 if (fb == fbl)
1760 found = 1;
1761
1762 if (!found) {
1763 DRM_ERROR("tried to remove a fb that we didn't own\n");
1764 ret = -EINVAL;
1765 goto out;
1766 }
1767
1768 /* TODO release all crtc connected to the framebuffer */
1769 /* TODO unhock the destructor from the buffer object */
1770
1771 list_del(&fb->filp_head);
1772 fb->funcs->destroy(fb);
1773
1774 out:
1775 mutex_unlock(&dev->mode_config.mutex);
1776 return ret;
1777 }
1778
1779 /**
1780 * drm_mode_getfb - get FB info
1781 * @inode: inode from the ioctl
1782 * @filp: file * from the ioctl
1783 * @cmd: cmd from ioctl
1784 * @arg: arg from ioctl
1785 *
1786 * LOCKING:
1787 * Caller? (FIXME)
1788 *
1789 * Lookup the FB given its ID and return info about it.
1790 *
1791 * Called by the user via ioctl.
1792 *
1793 * RETURNS:
1794 * Zero on success, errno on failure.
1795 */
1796 int drm_mode_getfb(struct drm_device *dev,
1797 void *data, struct drm_file *file_priv)
1798 {
1799 struct drm_mode_fb_cmd *r = data;
1800 struct drm_mode_object *obj;
1801 struct drm_framebuffer *fb;
1802 int ret = 0;
1803
1804 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1805 return -EINVAL;
1806
1807 mutex_lock(&dev->mode_config.mutex);
1808 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1809 if (!obj) {
1810 DRM_ERROR("invalid framebuffer id\n");
1811 ret = -EINVAL;
1812 goto out;
1813 }
1814 fb = obj_to_fb(obj);
1815
1816 r->height = fb->height;
1817 r->width = fb->width;
1818 r->depth = fb->depth;
1819 r->bpp = fb->bits_per_pixel;
1820 r->pitch = fb->pitch;
1821 fb->funcs->create_handle(fb, file_priv, &r->handle);
1822
1823 out:
1824 mutex_unlock(&dev->mode_config.mutex);
1825 return ret;
1826 }
1827
1828 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1829 void *data, struct drm_file *file_priv)
1830 {
1831 struct drm_clip_rect __user *clips_ptr;
1832 struct drm_clip_rect *clips = NULL;
1833 struct drm_mode_fb_dirty_cmd *r = data;
1834 struct drm_mode_object *obj;
1835 struct drm_framebuffer *fb;
1836 unsigned flags;
1837 int num_clips;
1838 int ret = 0;
1839
1840 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1841 return -EINVAL;
1842
1843 mutex_lock(&dev->mode_config.mutex);
1844 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1845 if (!obj) {
1846 DRM_ERROR("invalid framebuffer id\n");
1847 ret = -EINVAL;
1848 goto out_err1;
1849 }
1850 fb = obj_to_fb(obj);
1851
1852 num_clips = r->num_clips;
1853 clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1854
1855 if (!num_clips != !clips_ptr) {
1856 ret = -EINVAL;
1857 goto out_err1;
1858 }
1859
1860 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1861
1862 /* If userspace annotates copy, clips must come in pairs */
1863 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1864 ret = -EINVAL;
1865 goto out_err1;
1866 }
1867
1868 if (num_clips && clips_ptr) {
1869 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
1870 ret = -EINVAL;
1871 goto out_err1;
1872 }
1873 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1874 if (!clips) {
1875 ret = -ENOMEM;
1876 goto out_err1;
1877 }
1878
1879 ret = copy_from_user(clips, clips_ptr,
1880 num_clips * sizeof(*clips));
1881 if (ret) {
1882 ret = -EFAULT;
1883 goto out_err2;
1884 }
1885 }
1886
1887 if (fb->funcs->dirty) {
1888 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
1889 clips, num_clips);
1890 } else {
1891 ret = -ENOSYS;
1892 goto out_err2;
1893 }
1894
1895 out_err2:
1896 kfree(clips);
1897 out_err1:
1898 mutex_unlock(&dev->mode_config.mutex);
1899 return ret;
1900 }
1901
1902
1903 /**
1904 * drm_fb_release - remove and free the FBs on this file
1905 * @filp: file * from the ioctl
1906 *
1907 * LOCKING:
1908 * Takes mode config lock.
1909 *
1910 * Destroy all the FBs associated with @filp.
1911 *
1912 * Called by the user via ioctl.
1913 *
1914 * RETURNS:
1915 * Zero on success, errno on failure.
1916 */
1917 void drm_fb_release(struct drm_file *priv)
1918 {
1919 struct drm_device *dev = priv->minor->dev;
1920 struct drm_framebuffer *fb, *tfb;
1921
1922 mutex_lock(&dev->mode_config.mutex);
1923 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1924 list_del(&fb->filp_head);
1925 fb->funcs->destroy(fb);
1926 }
1927 mutex_unlock(&dev->mode_config.mutex);
1928 }
1929
1930 /**
1931 * drm_mode_attachmode - add a mode to the user mode list
1932 * @dev: DRM device
1933 * @connector: connector to add the mode to
1934 * @mode: mode to add
1935 *
1936 * Add @mode to @connector's user mode list.
1937 */
1938 static int drm_mode_attachmode(struct drm_device *dev,
1939 struct drm_connector *connector,
1940 struct drm_display_mode *mode)
1941 {
1942 int ret = 0;
1943
1944 list_add_tail(&mode->head, &connector->user_modes);
1945 return ret;
1946 }
1947
1948 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1949 struct drm_display_mode *mode)
1950 {
1951 struct drm_connector *connector;
1952 int ret = 0;
1953 struct drm_display_mode *dup_mode;
1954 int need_dup = 0;
1955 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1956 if (!connector->encoder)
1957 break;
1958 if (connector->encoder->crtc == crtc) {
1959 if (need_dup)
1960 dup_mode = drm_mode_duplicate(dev, mode);
1961 else
1962 dup_mode = mode;
1963 ret = drm_mode_attachmode(dev, connector, dup_mode);
1964 if (ret)
1965 return ret;
1966 need_dup = 1;
1967 }
1968 }
1969 return 0;
1970 }
1971 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1972
1973 static int drm_mode_detachmode(struct drm_device *dev,
1974 struct drm_connector *connector,
1975 struct drm_display_mode *mode)
1976 {
1977 int found = 0;
1978 int ret = 0;
1979 struct drm_display_mode *match_mode, *t;
1980
1981 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1982 if (drm_mode_equal(match_mode, mode)) {
1983 list_del(&match_mode->head);
1984 drm_mode_destroy(dev, match_mode);
1985 found = 1;
1986 break;
1987 }
1988 }
1989
1990 if (!found)
1991 ret = -EINVAL;
1992
1993 return ret;
1994 }
1995
1996 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1997 {
1998 struct drm_connector *connector;
1999
2000 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2001 drm_mode_detachmode(dev, connector, mode);
2002 }
2003 return 0;
2004 }
2005 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2006
2007 /**
2008 * drm_fb_attachmode - Attach a user mode to an connector
2009 * @inode: inode from the ioctl
2010 * @filp: file * from the ioctl
2011 * @cmd: cmd from ioctl
2012 * @arg: arg from ioctl
2013 *
2014 * This attaches a user specified mode to an connector.
2015 * Called by the user via ioctl.
2016 *
2017 * RETURNS:
2018 * Zero on success, errno on failure.
2019 */
2020 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2021 void *data, struct drm_file *file_priv)
2022 {
2023 struct drm_mode_mode_cmd *mode_cmd = data;
2024 struct drm_connector *connector;
2025 struct drm_display_mode *mode;
2026 struct drm_mode_object *obj;
2027 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2028 int ret = 0;
2029
2030 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2031 return -EINVAL;
2032
2033 mutex_lock(&dev->mode_config.mutex);
2034
2035 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2036 if (!obj) {
2037 ret = -EINVAL;
2038 goto out;
2039 }
2040 connector = obj_to_connector(obj);
2041
2042 mode = drm_mode_create(dev);
2043 if (!mode) {
2044 ret = -ENOMEM;
2045 goto out;
2046 }
2047
2048 drm_crtc_convert_umode(mode, umode);
2049
2050 ret = drm_mode_attachmode(dev, connector, mode);
2051 out:
2052 mutex_unlock(&dev->mode_config.mutex);
2053 return ret;
2054 }
2055
2056
2057 /**
2058 * drm_fb_detachmode - Detach a user specified mode from an connector
2059 * @inode: inode from the ioctl
2060 * @filp: file * from the ioctl
2061 * @cmd: cmd from ioctl
2062 * @arg: arg from ioctl
2063 *
2064 * Called by the user via ioctl.
2065 *
2066 * RETURNS:
2067 * Zero on success, errno on failure.
2068 */
2069 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2070 void *data, struct drm_file *file_priv)
2071 {
2072 struct drm_mode_object *obj;
2073 struct drm_mode_mode_cmd *mode_cmd = data;
2074 struct drm_connector *connector;
2075 struct drm_display_mode mode;
2076 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2077 int ret = 0;
2078
2079 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2080 return -EINVAL;
2081
2082 mutex_lock(&dev->mode_config.mutex);
2083
2084 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2085 if (!obj) {
2086 ret = -EINVAL;
2087 goto out;
2088 }
2089 connector = obj_to_connector(obj);
2090
2091 drm_crtc_convert_umode(&mode, umode);
2092 ret = drm_mode_detachmode(dev, connector, &mode);
2093 out:
2094 mutex_unlock(&dev->mode_config.mutex);
2095 return ret;
2096 }
2097
2098 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2099 const char *name, int num_values)
2100 {
2101 struct drm_property *property = NULL;
2102
2103 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2104 if (!property)
2105 return NULL;
2106
2107 if (num_values) {
2108 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2109 if (!property->values)
2110 goto fail;
2111 }
2112
2113 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2114 property->flags = flags;
2115 property->num_values = num_values;
2116 INIT_LIST_HEAD(&property->enum_blob_list);
2117
2118 if (name)
2119 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2120
2121 list_add_tail(&property->head, &dev->mode_config.property_list);
2122 return property;
2123 fail:
2124 kfree(property);
2125 return NULL;
2126 }
2127 EXPORT_SYMBOL(drm_property_create);
2128
2129 int drm_property_add_enum(struct drm_property *property, int index,
2130 uint64_t value, const char *name)
2131 {
2132 struct drm_property_enum *prop_enum;
2133
2134 if (!(property->flags & DRM_MODE_PROP_ENUM))
2135 return -EINVAL;
2136
2137 if (!list_empty(&property->enum_blob_list)) {
2138 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2139 if (prop_enum->value == value) {
2140 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2141 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2142 return 0;
2143 }
2144 }
2145 }
2146
2147 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2148 if (!prop_enum)
2149 return -ENOMEM;
2150
2151 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2152 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2153 prop_enum->value = value;
2154
2155 property->values[index] = value;
2156 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2157 return 0;
2158 }
2159 EXPORT_SYMBOL(drm_property_add_enum);
2160
2161 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2162 {
2163 struct drm_property_enum *prop_enum, *pt;
2164
2165 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2166 list_del(&prop_enum->head);
2167 kfree(prop_enum);
2168 }
2169
2170 if (property->num_values)
2171 kfree(property->values);
2172 drm_mode_object_put(dev, &property->base);
2173 list_del(&property->head);
2174 kfree(property);
2175 }
2176 EXPORT_SYMBOL(drm_property_destroy);
2177
2178 int drm_connector_attach_property(struct drm_connector *connector,
2179 struct drm_property *property, uint64_t init_val)
2180 {
2181 int i;
2182
2183 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2184 if (connector->property_ids[i] == 0) {
2185 connector->property_ids[i] = property->base.id;
2186 connector->property_values[i] = init_val;
2187 break;
2188 }
2189 }
2190
2191 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2192 return -EINVAL;
2193 return 0;
2194 }
2195 EXPORT_SYMBOL(drm_connector_attach_property);
2196
2197 int drm_connector_property_set_value(struct drm_connector *connector,
2198 struct drm_property *property, uint64_t value)
2199 {
2200 int i;
2201
2202 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2203 if (connector->property_ids[i] == property->base.id) {
2204 connector->property_values[i] = value;
2205 break;
2206 }
2207 }
2208
2209 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2210 return -EINVAL;
2211 return 0;
2212 }
2213 EXPORT_SYMBOL(drm_connector_property_set_value);
2214
2215 int drm_connector_property_get_value(struct drm_connector *connector,
2216 struct drm_property *property, uint64_t *val)
2217 {
2218 int i;
2219
2220 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2221 if (connector->property_ids[i] == property->base.id) {
2222 *val = connector->property_values[i];
2223 break;
2224 }
2225 }
2226
2227 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2228 return -EINVAL;
2229 return 0;
2230 }
2231 EXPORT_SYMBOL(drm_connector_property_get_value);
2232
2233 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2234 void *data, struct drm_file *file_priv)
2235 {
2236 struct drm_mode_object *obj;
2237 struct drm_mode_get_property *out_resp = data;
2238 struct drm_property *property;
2239 int enum_count = 0;
2240 int blob_count = 0;
2241 int value_count = 0;
2242 int ret = 0, i;
2243 int copied;
2244 struct drm_property_enum *prop_enum;
2245 struct drm_mode_property_enum __user *enum_ptr;
2246 struct drm_property_blob *prop_blob;
2247 uint32_t *blob_id_ptr;
2248 uint64_t __user *values_ptr;
2249 uint32_t __user *blob_length_ptr;
2250
2251 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2252 return -EINVAL;
2253
2254 mutex_lock(&dev->mode_config.mutex);
2255 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2256 if (!obj) {
2257 ret = -EINVAL;
2258 goto done;
2259 }
2260 property = obj_to_property(obj);
2261
2262 if (property->flags & DRM_MODE_PROP_ENUM) {
2263 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2264 enum_count++;
2265 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2266 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2267 blob_count++;
2268 }
2269
2270 value_count = property->num_values;
2271
2272 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2273 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2274 out_resp->flags = property->flags;
2275
2276 if ((out_resp->count_values >= value_count) && value_count) {
2277 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2278 for (i = 0; i < value_count; i++) {
2279 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2280 ret = -EFAULT;
2281 goto done;
2282 }
2283 }
2284 }
2285 out_resp->count_values = value_count;
2286
2287 if (property->flags & DRM_MODE_PROP_ENUM) {
2288 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2289 copied = 0;
2290 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2291 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2292
2293 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2294 ret = -EFAULT;
2295 goto done;
2296 }
2297
2298 if (copy_to_user(&enum_ptr[copied].name,
2299 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2300 ret = -EFAULT;
2301 goto done;
2302 }
2303 copied++;
2304 }
2305 }
2306 out_resp->count_enum_blobs = enum_count;
2307 }
2308
2309 if (property->flags & DRM_MODE_PROP_BLOB) {
2310 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2311 copied = 0;
2312 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2313 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2314
2315 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2316 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2317 ret = -EFAULT;
2318 goto done;
2319 }
2320
2321 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2322 ret = -EFAULT;
2323 goto done;
2324 }
2325
2326 copied++;
2327 }
2328 }
2329 out_resp->count_enum_blobs = blob_count;
2330 }
2331 done:
2332 mutex_unlock(&dev->mode_config.mutex);
2333 return ret;
2334 }
2335
2336 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2337 void *data)
2338 {
2339 struct drm_property_blob *blob;
2340
2341 if (!length || !data)
2342 return NULL;
2343
2344 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2345 if (!blob)
2346 return NULL;
2347
2348 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2349 blob->length = length;
2350
2351 memcpy(blob->data, data, length);
2352
2353 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2354
2355 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2356 return blob;
2357 }
2358
2359 static void drm_property_destroy_blob(struct drm_device *dev,
2360 struct drm_property_blob *blob)
2361 {
2362 drm_mode_object_put(dev, &blob->base);
2363 list_del(&blob->head);
2364 kfree(blob);
2365 }
2366
2367 int drm_mode_getblob_ioctl(struct drm_device *dev,
2368 void *data, struct drm_file *file_priv)
2369 {
2370 struct drm_mode_object *obj;
2371 struct drm_mode_get_blob *out_resp = data;
2372 struct drm_property_blob *blob;
2373 int ret = 0;
2374 void *blob_ptr;
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, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2381 if (!obj) {
2382 ret = -EINVAL;
2383 goto done;
2384 }
2385 blob = obj_to_blob(obj);
2386
2387 if (out_resp->length == blob->length) {
2388 blob_ptr = (void *)(unsigned long)out_resp->data;
2389 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2390 ret = -EFAULT;
2391 goto done;
2392 }
2393 }
2394 out_resp->length = blob->length;
2395
2396 done:
2397 mutex_unlock(&dev->mode_config.mutex);
2398 return ret;
2399 }
2400
2401 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2402 struct edid *edid)
2403 {
2404 struct drm_device *dev = connector->dev;
2405 int ret = 0, size;
2406
2407 if (connector->edid_blob_ptr)
2408 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2409
2410 /* Delete edid, when there is none. */
2411 if (!edid) {
2412 connector->edid_blob_ptr = NULL;
2413 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2414 return ret;
2415 }
2416
2417 size = EDID_LENGTH * (1 + edid->extensions);
2418 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2419 size, edid);
2420
2421 ret = drm_connector_property_set_value(connector,
2422 dev->mode_config.edid_property,
2423 connector->edid_blob_ptr->base.id);
2424
2425 return ret;
2426 }
2427 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2428
2429 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2430 void *data, struct drm_file *file_priv)
2431 {
2432 struct drm_mode_connector_set_property *out_resp = data;
2433 struct drm_mode_object *obj;
2434 struct drm_property *property;
2435 struct drm_connector *connector;
2436 int ret = -EINVAL;
2437 int i;
2438
2439 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2440 return -EINVAL;
2441
2442 mutex_lock(&dev->mode_config.mutex);
2443
2444 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2445 if (!obj) {
2446 goto out;
2447 }
2448 connector = obj_to_connector(obj);
2449
2450 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2451 if (connector->property_ids[i] == out_resp->prop_id)
2452 break;
2453 }
2454
2455 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2456 goto out;
2457 }
2458
2459 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2460 if (!obj) {
2461 goto out;
2462 }
2463 property = obj_to_property(obj);
2464
2465 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2466 goto out;
2467
2468 if (property->flags & DRM_MODE_PROP_RANGE) {
2469 if (out_resp->value < property->values[0])
2470 goto out;
2471
2472 if (out_resp->value > property->values[1])
2473 goto out;
2474 } else {
2475 int found = 0;
2476 for (i = 0; i < property->num_values; i++) {
2477 if (property->values[i] == out_resp->value) {
2478 found = 1;
2479 break;
2480 }
2481 }
2482 if (!found) {
2483 goto out;
2484 }
2485 }
2486
2487 /* Do DPMS ourselves */
2488 if (property == connector->dev->mode_config.dpms_property) {
2489 if (connector->funcs->dpms)
2490 (*connector->funcs->dpms)(connector, (int) out_resp->value);
2491 ret = 0;
2492 } else if (connector->funcs->set_property)
2493 ret = connector->funcs->set_property(connector, property, out_resp->value);
2494
2495 /* store the property value if successful */
2496 if (!ret)
2497 drm_connector_property_set_value(connector, property, out_resp->value);
2498 out:
2499 mutex_unlock(&dev->mode_config.mutex);
2500 return ret;
2501 }
2502
2503 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2504 struct drm_encoder *encoder)
2505 {
2506 int i;
2507
2508 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2509 if (connector->encoder_ids[i] == 0) {
2510 connector->encoder_ids[i] = encoder->base.id;
2511 return 0;
2512 }
2513 }
2514 return -ENOMEM;
2515 }
2516 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2517
2518 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2519 struct drm_encoder *encoder)
2520 {
2521 int i;
2522 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2523 if (connector->encoder_ids[i] == encoder->base.id) {
2524 connector->encoder_ids[i] = 0;
2525 if (connector->encoder == encoder)
2526 connector->encoder = NULL;
2527 break;
2528 }
2529 }
2530 }
2531 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2532
2533 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2534 int gamma_size)
2535 {
2536 crtc->gamma_size = gamma_size;
2537
2538 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2539 if (!crtc->gamma_store) {
2540 crtc->gamma_size = 0;
2541 return false;
2542 }
2543
2544 return true;
2545 }
2546 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2547
2548 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2549 void *data, struct drm_file *file_priv)
2550 {
2551 struct drm_mode_crtc_lut *crtc_lut = data;
2552 struct drm_mode_object *obj;
2553 struct drm_crtc *crtc;
2554 void *r_base, *g_base, *b_base;
2555 int size;
2556 int ret = 0;
2557
2558 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2559 return -EINVAL;
2560
2561 mutex_lock(&dev->mode_config.mutex);
2562 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2563 if (!obj) {
2564 ret = -EINVAL;
2565 goto out;
2566 }
2567 crtc = obj_to_crtc(obj);
2568
2569 /* memcpy into gamma store */
2570 if (crtc_lut->gamma_size != crtc->gamma_size) {
2571 ret = -EINVAL;
2572 goto out;
2573 }
2574
2575 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2576 r_base = crtc->gamma_store;
2577 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2578 ret = -EFAULT;
2579 goto out;
2580 }
2581
2582 g_base = r_base + size;
2583 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2584 ret = -EFAULT;
2585 goto out;
2586 }
2587
2588 b_base = g_base + size;
2589 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2590 ret = -EFAULT;
2591 goto out;
2592 }
2593
2594 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
2595
2596 out:
2597 mutex_unlock(&dev->mode_config.mutex);
2598 return ret;
2599
2600 }
2601
2602 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2603 void *data, struct drm_file *file_priv)
2604 {
2605 struct drm_mode_crtc_lut *crtc_lut = data;
2606 struct drm_mode_object *obj;
2607 struct drm_crtc *crtc;
2608 void *r_base, *g_base, *b_base;
2609 int size;
2610 int ret = 0;
2611
2612 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2613 return -EINVAL;
2614
2615 mutex_lock(&dev->mode_config.mutex);
2616 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2617 if (!obj) {
2618 ret = -EINVAL;
2619 goto out;
2620 }
2621 crtc = obj_to_crtc(obj);
2622
2623 /* memcpy into gamma store */
2624 if (crtc_lut->gamma_size != crtc->gamma_size) {
2625 ret = -EINVAL;
2626 goto out;
2627 }
2628
2629 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2630 r_base = crtc->gamma_store;
2631 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2632 ret = -EFAULT;
2633 goto out;
2634 }
2635
2636 g_base = r_base + size;
2637 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2638 ret = -EFAULT;
2639 goto out;
2640 }
2641
2642 b_base = g_base + size;
2643 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2644 ret = -EFAULT;
2645 goto out;
2646 }
2647 out:
2648 mutex_unlock(&dev->mode_config.mutex);
2649 return ret;
2650 }
2651
2652 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2653 void *data, struct drm_file *file_priv)
2654 {
2655 struct drm_mode_crtc_page_flip *page_flip = data;
2656 struct drm_mode_object *obj;
2657 struct drm_crtc *crtc;
2658 struct drm_framebuffer *fb;
2659 struct drm_pending_vblank_event *e = NULL;
2660 unsigned long flags;
2661 int ret = -EINVAL;
2662
2663 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2664 page_flip->reserved != 0)
2665 return -EINVAL;
2666
2667 mutex_lock(&dev->mode_config.mutex);
2668 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2669 if (!obj)
2670 goto out;
2671 crtc = obj_to_crtc(obj);
2672
2673 if (crtc->fb == NULL) {
2674 /* The framebuffer is currently unbound, presumably
2675 * due to a hotplug event, that userspace has not
2676 * yet discovered.
2677 */
2678 ret = -EBUSY;
2679 goto out;
2680 }
2681
2682 if (crtc->funcs->page_flip == NULL)
2683 goto out;
2684
2685 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2686 if (!obj)
2687 goto out;
2688 fb = obj_to_fb(obj);
2689
2690 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2691 ret = -ENOMEM;
2692 spin_lock_irqsave(&dev->event_lock, flags);
2693 if (file_priv->event_space < sizeof e->event) {
2694 spin_unlock_irqrestore(&dev->event_lock, flags);
2695 goto out;
2696 }
2697 file_priv->event_space -= sizeof e->event;
2698 spin_unlock_irqrestore(&dev->event_lock, flags);
2699
2700 e = kzalloc(sizeof *e, GFP_KERNEL);
2701 if (e == NULL) {
2702 spin_lock_irqsave(&dev->event_lock, flags);
2703 file_priv->event_space += sizeof e->event;
2704 spin_unlock_irqrestore(&dev->event_lock, flags);
2705 goto out;
2706 }
2707
2708 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2709 e->event.base.length = sizeof e->event;
2710 e->event.user_data = page_flip->user_data;
2711 e->base.event = &e->event.base;
2712 e->base.file_priv = file_priv;
2713 e->base.destroy =
2714 (void (*) (struct drm_pending_event *)) kfree;
2715 }
2716
2717 ret = crtc->funcs->page_flip(crtc, fb, e);
2718 if (ret) {
2719 spin_lock_irqsave(&dev->event_lock, flags);
2720 file_priv->event_space += sizeof e->event;
2721 spin_unlock_irqrestore(&dev->event_lock, flags);
2722 kfree(e);
2723 }
2724
2725 out:
2726 mutex_unlock(&dev->mode_config.mutex);
2727 return ret;
2728 }
2729
2730 void drm_mode_config_reset(struct drm_device *dev)
2731 {
2732 struct drm_crtc *crtc;
2733 struct drm_encoder *encoder;
2734 struct drm_connector *connector;
2735
2736 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
2737 if (crtc->funcs->reset)
2738 crtc->funcs->reset(crtc);
2739
2740 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
2741 if (encoder->funcs->reset)
2742 encoder->funcs->reset(encoder);
2743
2744 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
2745 if (connector->funcs->reset)
2746 connector->funcs->reset(connector);
2747 }
2748 EXPORT_SYMBOL(drm_mode_config_reset);
2749
2750 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
2751 void *data, struct drm_file *file_priv)
2752 {
2753 struct drm_mode_create_dumb *args = data;
2754
2755 if (!dev->driver->dumb_create)
2756 return -ENOSYS;
2757 return dev->driver->dumb_create(file_priv, dev, args);
2758 }
2759
2760 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
2761 void *data, struct drm_file *file_priv)
2762 {
2763 struct drm_mode_map_dumb *args = data;
2764
2765 /* call driver ioctl to get mmap offset */
2766 if (!dev->driver->dumb_map_offset)
2767 return -ENOSYS;
2768
2769 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
2770 }
2771
2772 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
2773 void *data, struct drm_file *file_priv)
2774 {
2775 struct drm_mode_destroy_dumb *args = data;
2776
2777 if (!dev->driver->dumb_destroy)
2778 return -ENOSYS;
2779
2780 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
2781 }
Linux with added FPC-III support