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ocfs2: Make the left masklogs compat.
[taoma-kernel.git] / drivers / gpu / drm / drm_crtc.c
blob654faa803dcbc1ae2656c2df3c00900600d99e80
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 if (total_objects == 0)
890 return -EINVAL;
891
892 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
893 if (!group->id_list)
894 return -ENOMEM;
895
896 group->num_crtcs = 0;
897 group->num_connectors = 0;
898 group->num_encoders = 0;
899 return 0;
900 }
901
902 int drm_mode_group_init_legacy_group(struct drm_device *dev,
903 struct drm_mode_group *group)
904 {
905 struct drm_crtc *crtc;
906 struct drm_encoder *encoder;
907 struct drm_connector *connector;
908 int ret;
909
910 if ((ret = drm_mode_group_init(dev, group)))
911 return ret;
912
913 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
914 group->id_list[group->num_crtcs++] = crtc->base.id;
915
916 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
917 group->id_list[group->num_crtcs + group->num_encoders++] =
918 encoder->base.id;
919
920 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
921 group->id_list[group->num_crtcs + group->num_encoders +
922 group->num_connectors++] = connector->base.id;
923
924 return 0;
925 }
926
927 /**
928 * drm_mode_config_cleanup - free up DRM mode_config info
929 * @dev: DRM device
930 *
931 * LOCKING:
932 * Caller must hold mode config lock.
933 *
934 * Free up all the connectors and CRTCs associated with this DRM device, then
935 * free up the framebuffers and associated buffer objects.
936 *
937 * FIXME: cleanup any dangling user buffer objects too
938 */
939 void drm_mode_config_cleanup(struct drm_device *dev)
940 {
941 struct drm_connector *connector, *ot;
942 struct drm_crtc *crtc, *ct;
943 struct drm_encoder *encoder, *enct;
944 struct drm_framebuffer *fb, *fbt;
945 struct drm_property *property, *pt;
946
947 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
948 head) {
949 encoder->funcs->destroy(encoder);
950 }
951
952 list_for_each_entry_safe(connector, ot,
953 &dev->mode_config.connector_list, head) {
954 connector->funcs->destroy(connector);
955 }
956
957 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
958 head) {
959 drm_property_destroy(dev, property);
960 }
961
962 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
963 fb->funcs->destroy(fb);
964 }
965
966 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
967 crtc->funcs->destroy(crtc);
968 }
969
970 }
971 EXPORT_SYMBOL(drm_mode_config_cleanup);
972
973 /**
974 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
975 * @out: drm_mode_modeinfo struct to return to the user
976 * @in: drm_display_mode to use
977 *
978 * LOCKING:
979 * None.
980 *
981 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
982 * the user.
983 */
984 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
985 struct drm_display_mode *in)
986 {
987 out->clock = in->clock;
988 out->hdisplay = in->hdisplay;
989 out->hsync_start = in->hsync_start;
990 out->hsync_end = in->hsync_end;
991 out->htotal = in->htotal;
992 out->hskew = in->hskew;
993 out->vdisplay = in->vdisplay;
994 out->vsync_start = in->vsync_start;
995 out->vsync_end = in->vsync_end;
996 out->vtotal = in->vtotal;
997 out->vscan = in->vscan;
998 out->vrefresh = in->vrefresh;
999 out->flags = in->flags;
1000 out->type = in->type;
1001 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1002 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1003 }
1004
1005 /**
1006 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1007 * @out: drm_display_mode to return to the user
1008 * @in: drm_mode_modeinfo to use
1009 *
1010 * LOCKING:
1011 * None.
1012 *
1013 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1014 * the caller.
1015 */
1016 void drm_crtc_convert_umode(struct drm_display_mode *out,
1017 struct drm_mode_modeinfo *in)
1018 {
1019 out->clock = in->clock;
1020 out->hdisplay = in->hdisplay;
1021 out->hsync_start = in->hsync_start;
1022 out->hsync_end = in->hsync_end;
1023 out->htotal = in->htotal;
1024 out->hskew = in->hskew;
1025 out->vdisplay = in->vdisplay;
1026 out->vsync_start = in->vsync_start;
1027 out->vsync_end = in->vsync_end;
1028 out->vtotal = in->vtotal;
1029 out->vscan = in->vscan;
1030 out->vrefresh = in->vrefresh;
1031 out->flags = in->flags;
1032 out->type = in->type;
1033 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1034 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1035 }
1036
1037 /**
1038 * drm_mode_getresources - get graphics configuration
1039 * @inode: inode from the ioctl
1040 * @filp: file * from the ioctl
1041 * @cmd: cmd from ioctl
1042 * @arg: arg from ioctl
1043 *
1044 * LOCKING:
1045 * Takes mode config lock.
1046 *
1047 * Construct a set of configuration description structures and return
1048 * them to the user, including CRTC, connector and framebuffer configuration.
1049 *
1050 * Called by the user via ioctl.
1051 *
1052 * RETURNS:
1053 * Zero on success, errno on failure.
1054 */
1055 int drm_mode_getresources(struct drm_device *dev, void *data,
1056 struct drm_file *file_priv)
1057 {
1058 struct drm_mode_card_res *card_res = data;
1059 struct list_head *lh;
1060 struct drm_framebuffer *fb;
1061 struct drm_connector *connector;
1062 struct drm_crtc *crtc;
1063 struct drm_encoder *encoder;
1064 int ret = 0;
1065 int connector_count = 0;
1066 int crtc_count = 0;
1067 int fb_count = 0;
1068 int encoder_count = 0;
1069 int copied = 0, i;
1070 uint32_t __user *fb_id;
1071 uint32_t __user *crtc_id;
1072 uint32_t __user *connector_id;
1073 uint32_t __user *encoder_id;
1074 struct drm_mode_group *mode_group;
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, 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 mutex_lock(&dev->mode_config.mutex);
1248
1249 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1250 DRM_MODE_OBJECT_CRTC);
1251 if (!obj) {
1252 ret = -EINVAL;
1253 goto out;
1254 }
1255 crtc = obj_to_crtc(obj);
1256
1257 crtc_resp->x = crtc->x;
1258 crtc_resp->y = crtc->y;
1259 crtc_resp->gamma_size = crtc->gamma_size;
1260 if (crtc->fb)
1261 crtc_resp->fb_id = crtc->fb->base.id;
1262 else
1263 crtc_resp->fb_id = 0;
1264
1265 if (crtc->enabled) {
1266
1267 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1268 crtc_resp->mode_valid = 1;
1269
1270 } else {
1271 crtc_resp->mode_valid = 0;
1272 }
1273
1274 out:
1275 mutex_unlock(&dev->mode_config.mutex);
1276 return ret;
1277 }
1278
1279 /**
1280 * drm_mode_getconnector - get connector configuration
1281 * @inode: inode from the ioctl
1282 * @filp: file * from the ioctl
1283 * @cmd: cmd from ioctl
1284 * @arg: arg from ioctl
1285 *
1286 * LOCKING:
1287 * Caller? (FIXME)
1288 *
1289 * Construct a connector configuration structure to return to the user.
1290 *
1291 * Called by the user via ioctl.
1292 *
1293 * RETURNS:
1294 * Zero on success, errno on failure.
1295 */
1296 int drm_mode_getconnector(struct drm_device *dev, void *data,
1297 struct drm_file *file_priv)
1298 {
1299 struct drm_mode_get_connector *out_resp = data;
1300 struct drm_mode_object *obj;
1301 struct drm_connector *connector;
1302 struct drm_display_mode *mode;
1303 int mode_count = 0;
1304 int props_count = 0;
1305 int encoders_count = 0;
1306 int ret = 0;
1307 int copied = 0;
1308 int i;
1309 struct drm_mode_modeinfo u_mode;
1310 struct drm_mode_modeinfo __user *mode_ptr;
1311 uint32_t __user *prop_ptr;
1312 uint64_t __user *prop_values;
1313 uint32_t __user *encoder_ptr;
1314
1315 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1316
1317 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1318
1319 mutex_lock(&dev->mode_config.mutex);
1320
1321 obj = drm_mode_object_find(dev, out_resp->connector_id,
1322 DRM_MODE_OBJECT_CONNECTOR);
1323 if (!obj) {
1324 ret = -EINVAL;
1325 goto out;
1326 }
1327 connector = obj_to_connector(obj);
1328
1329 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1330 if (connector->property_ids[i] != 0) {
1331 props_count++;
1332 }
1333 }
1334
1335 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1336 if (connector->encoder_ids[i] != 0) {
1337 encoders_count++;
1338 }
1339 }
1340
1341 if (out_resp->count_modes == 0) {
1342 connector->funcs->fill_modes(connector,
1343 dev->mode_config.max_width,
1344 dev->mode_config.max_height);
1345 }
1346
1347 /* delayed so we get modes regardless of pre-fill_modes state */
1348 list_for_each_entry(mode, &connector->modes, head)
1349 mode_count++;
1350
1351 out_resp->connector_id = connector->base.id;
1352 out_resp->connector_type = connector->connector_type;
1353 out_resp->connector_type_id = connector->connector_type_id;
1354 out_resp->mm_width = connector->display_info.width_mm;
1355 out_resp->mm_height = connector->display_info.height_mm;
1356 out_resp->subpixel = connector->display_info.subpixel_order;
1357 out_resp->connection = connector->status;
1358 if (connector->encoder)
1359 out_resp->encoder_id = connector->encoder->base.id;
1360 else
1361 out_resp->encoder_id = 0;
1362
1363 /*
1364 * This ioctl is called twice, once to determine how much space is
1365 * needed, and the 2nd time to fill it.
1366 */
1367 if ((out_resp->count_modes >= mode_count) && mode_count) {
1368 copied = 0;
1369 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1370 list_for_each_entry(mode, &connector->modes, head) {
1371 drm_crtc_convert_to_umode(&u_mode, mode);
1372 if (copy_to_user(mode_ptr + copied,
1373 &u_mode, sizeof(u_mode))) {
1374 ret = -EFAULT;
1375 goto out;
1376 }
1377 copied++;
1378 }
1379 }
1380 out_resp->count_modes = mode_count;
1381
1382 if ((out_resp->count_props >= props_count) && props_count) {
1383 copied = 0;
1384 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1385 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1386 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1387 if (connector->property_ids[i] != 0) {
1388 if (put_user(connector->property_ids[i],
1389 prop_ptr + copied)) {
1390 ret = -EFAULT;
1391 goto out;
1392 }
1393
1394 if (put_user(connector->property_values[i],
1395 prop_values + copied)) {
1396 ret = -EFAULT;
1397 goto out;
1398 }
1399 copied++;
1400 }
1401 }
1402 }
1403 out_resp->count_props = props_count;
1404
1405 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1406 copied = 0;
1407 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1408 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1409 if (connector->encoder_ids[i] != 0) {
1410 if (put_user(connector->encoder_ids[i],
1411 encoder_ptr + copied)) {
1412 ret = -EFAULT;
1413 goto out;
1414 }
1415 copied++;
1416 }
1417 }
1418 }
1419 out_resp->count_encoders = encoders_count;
1420
1421 out:
1422 mutex_unlock(&dev->mode_config.mutex);
1423 return ret;
1424 }
1425
1426 int drm_mode_getencoder(struct drm_device *dev, void *data,
1427 struct drm_file *file_priv)
1428 {
1429 struct drm_mode_get_encoder *enc_resp = data;
1430 struct drm_mode_object *obj;
1431 struct drm_encoder *encoder;
1432 int ret = 0;
1433
1434 mutex_lock(&dev->mode_config.mutex);
1435 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1436 DRM_MODE_OBJECT_ENCODER);
1437 if (!obj) {
1438 ret = -EINVAL;
1439 goto out;
1440 }
1441 encoder = obj_to_encoder(obj);
1442
1443 if (encoder->crtc)
1444 enc_resp->crtc_id = encoder->crtc->base.id;
1445 else
1446 enc_resp->crtc_id = 0;
1447 enc_resp->encoder_type = encoder->encoder_type;
1448 enc_resp->encoder_id = encoder->base.id;
1449 enc_resp->possible_crtcs = encoder->possible_crtcs;
1450 enc_resp->possible_clones = encoder->possible_clones;
1451
1452 out:
1453 mutex_unlock(&dev->mode_config.mutex);
1454 return ret;
1455 }
1456
1457 /**
1458 * drm_mode_setcrtc - set CRTC configuration
1459 * @inode: inode from the ioctl
1460 * @filp: file * from the ioctl
1461 * @cmd: cmd from ioctl
1462 * @arg: arg from ioctl
1463 *
1464 * LOCKING:
1465 * Caller? (FIXME)
1466 *
1467 * Build a new CRTC configuration based on user request.
1468 *
1469 * Called by the user via ioctl.
1470 *
1471 * RETURNS:
1472 * Zero on success, errno on failure.
1473 */
1474 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1475 struct drm_file *file_priv)
1476 {
1477 struct drm_mode_config *config = &dev->mode_config;
1478 struct drm_mode_crtc *crtc_req = data;
1479 struct drm_mode_object *obj;
1480 struct drm_crtc *crtc, *crtcfb;
1481 struct drm_connector **connector_set = NULL, *connector;
1482 struct drm_framebuffer *fb = NULL;
1483 struct drm_display_mode *mode = NULL;
1484 struct drm_mode_set set;
1485 uint32_t __user *set_connectors_ptr;
1486 int ret = 0;
1487 int i;
1488
1489 mutex_lock(&dev->mode_config.mutex);
1490 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1491 DRM_MODE_OBJECT_CRTC);
1492 if (!obj) {
1493 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1494 ret = -EINVAL;
1495 goto out;
1496 }
1497 crtc = obj_to_crtc(obj);
1498 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1499
1500 if (crtc_req->mode_valid) {
1501 /* If we have a mode we need a framebuffer. */
1502 /* If we pass -1, set the mode with the currently bound fb */
1503 if (crtc_req->fb_id == -1) {
1504 list_for_each_entry(crtcfb,
1505 &dev->mode_config.crtc_list, head) {
1506 if (crtcfb == crtc) {
1507 DRM_DEBUG_KMS("Using current fb for "
1508 "setmode\n");
1509 fb = crtc->fb;
1510 }
1511 }
1512 } else {
1513 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1514 DRM_MODE_OBJECT_FB);
1515 if (!obj) {
1516 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1517 crtc_req->fb_id);
1518 ret = -EINVAL;
1519 goto out;
1520 }
1521 fb = obj_to_fb(obj);
1522 }
1523
1524 mode = drm_mode_create(dev);
1525 drm_crtc_convert_umode(mode, &crtc_req->mode);
1526 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1527 }
1528
1529 if (crtc_req->count_connectors == 0 && mode) {
1530 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1531 ret = -EINVAL;
1532 goto out;
1533 }
1534
1535 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1536 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1537 crtc_req->count_connectors);
1538 ret = -EINVAL;
1539 goto out;
1540 }
1541
1542 if (crtc_req->count_connectors > 0) {
1543 u32 out_id;
1544
1545 /* Avoid unbounded kernel memory allocation */
1546 if (crtc_req->count_connectors > config->num_connector) {
1547 ret = -EINVAL;
1548 goto out;
1549 }
1550
1551 connector_set = kmalloc(crtc_req->count_connectors *
1552 sizeof(struct drm_connector *),
1553 GFP_KERNEL);
1554 if (!connector_set) {
1555 ret = -ENOMEM;
1556 goto out;
1557 }
1558
1559 for (i = 0; i < crtc_req->count_connectors; i++) {
1560 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1561 if (get_user(out_id, &set_connectors_ptr[i])) {
1562 ret = -EFAULT;
1563 goto out;
1564 }
1565
1566 obj = drm_mode_object_find(dev, out_id,
1567 DRM_MODE_OBJECT_CONNECTOR);
1568 if (!obj) {
1569 DRM_DEBUG_KMS("Connector id %d unknown\n",
1570 out_id);
1571 ret = -EINVAL;
1572 goto out;
1573 }
1574 connector = obj_to_connector(obj);
1575 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1576 connector->base.id,
1577 drm_get_connector_name(connector));
1578
1579 connector_set[i] = connector;
1580 }
1581 }
1582
1583 set.crtc = crtc;
1584 set.x = crtc_req->x;
1585 set.y = crtc_req->y;
1586 set.mode = mode;
1587 set.connectors = connector_set;
1588 set.num_connectors = crtc_req->count_connectors;
1589 set.fb = fb;
1590 ret = crtc->funcs->set_config(&set);
1591
1592 out:
1593 kfree(connector_set);
1594 mutex_unlock(&dev->mode_config.mutex);
1595 return ret;
1596 }
1597
1598 int drm_mode_cursor_ioctl(struct drm_device *dev,
1599 void *data, struct drm_file *file_priv)
1600 {
1601 struct drm_mode_cursor *req = data;
1602 struct drm_mode_object *obj;
1603 struct drm_crtc *crtc;
1604 int ret = 0;
1605
1606 if (!req->flags) {
1607 DRM_ERROR("no operation set\n");
1608 return -EINVAL;
1609 }
1610
1611 mutex_lock(&dev->mode_config.mutex);
1612 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1613 if (!obj) {
1614 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1615 ret = -EINVAL;
1616 goto out;
1617 }
1618 crtc = obj_to_crtc(obj);
1619
1620 if (req->flags & DRM_MODE_CURSOR_BO) {
1621 if (!crtc->funcs->cursor_set) {
1622 DRM_ERROR("crtc does not support cursor\n");
1623 ret = -ENXIO;
1624 goto out;
1625 }
1626 /* Turns off the cursor if handle is 0 */
1627 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1628 req->width, req->height);
1629 }
1630
1631 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1632 if (crtc->funcs->cursor_move) {
1633 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1634 } else {
1635 DRM_ERROR("crtc does not support cursor\n");
1636 ret = -EFAULT;
1637 goto out;
1638 }
1639 }
1640 out:
1641 mutex_unlock(&dev->mode_config.mutex);
1642 return ret;
1643 }
1644
1645 /**
1646 * drm_mode_addfb - add an FB to the graphics configuration
1647 * @inode: inode from the ioctl
1648 * @filp: file * from the ioctl
1649 * @cmd: cmd from ioctl
1650 * @arg: arg from ioctl
1651 *
1652 * LOCKING:
1653 * Takes mode config lock.
1654 *
1655 * Add a new FB to the specified CRTC, given a user request.
1656 *
1657 * Called by the user via ioctl.
1658 *
1659 * RETURNS:
1660 * Zero on success, errno on failure.
1661 */
1662 int drm_mode_addfb(struct drm_device *dev,
1663 void *data, struct drm_file *file_priv)
1664 {
1665 struct drm_mode_fb_cmd *r = data;
1666 struct drm_mode_config *config = &dev->mode_config;
1667 struct drm_framebuffer *fb;
1668 int ret = 0;
1669
1670 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1671 DRM_ERROR("mode new framebuffer width not within limits\n");
1672 return -EINVAL;
1673 }
1674 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1675 DRM_ERROR("mode new framebuffer height not within limits\n");
1676 return -EINVAL;
1677 }
1678
1679 mutex_lock(&dev->mode_config.mutex);
1680
1681 /* TODO check buffer is sufficently large */
1682 /* TODO setup destructor callback */
1683
1684 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1685 if (IS_ERR(fb)) {
1686 DRM_ERROR("could not create framebuffer\n");
1687 ret = PTR_ERR(fb);
1688 goto out;
1689 }
1690
1691 r->fb_id = fb->base.id;
1692 list_add(&fb->filp_head, &file_priv->fbs);
1693 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
1694
1695 out:
1696 mutex_unlock(&dev->mode_config.mutex);
1697 return ret;
1698 }
1699
1700 /**
1701 * drm_mode_rmfb - remove an FB from the configuration
1702 * @inode: inode from the ioctl
1703 * @filp: file * from the ioctl
1704 * @cmd: cmd from ioctl
1705 * @arg: arg from ioctl
1706 *
1707 * LOCKING:
1708 * Takes mode config lock.
1709 *
1710 * Remove the FB specified by the user.
1711 *
1712 * Called by the user via ioctl.
1713 *
1714 * RETURNS:
1715 * Zero on success, errno on failure.
1716 */
1717 int drm_mode_rmfb(struct drm_device *dev,
1718 void *data, struct drm_file *file_priv)
1719 {
1720 struct drm_mode_object *obj;
1721 struct drm_framebuffer *fb = NULL;
1722 struct drm_framebuffer *fbl = NULL;
1723 uint32_t *id = data;
1724 int ret = 0;
1725 int found = 0;
1726
1727 mutex_lock(&dev->mode_config.mutex);
1728 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1729 /* TODO check that we realy get a framebuffer back. */
1730 if (!obj) {
1731 DRM_ERROR("mode invalid framebuffer id\n");
1732 ret = -EINVAL;
1733 goto out;
1734 }
1735 fb = obj_to_fb(obj);
1736
1737 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1738 if (fb == fbl)
1739 found = 1;
1740
1741 if (!found) {
1742 DRM_ERROR("tried to remove a fb that we didn't own\n");
1743 ret = -EINVAL;
1744 goto out;
1745 }
1746
1747 /* TODO release all crtc connected to the framebuffer */
1748 /* TODO unhock the destructor from the buffer object */
1749
1750 list_del(&fb->filp_head);
1751 fb->funcs->destroy(fb);
1752
1753 out:
1754 mutex_unlock(&dev->mode_config.mutex);
1755 return ret;
1756 }
1757
1758 /**
1759 * drm_mode_getfb - get FB info
1760 * @inode: inode from the ioctl
1761 * @filp: file * from the ioctl
1762 * @cmd: cmd from ioctl
1763 * @arg: arg from ioctl
1764 *
1765 * LOCKING:
1766 * Caller? (FIXME)
1767 *
1768 * Lookup the FB given its ID and return info about it.
1769 *
1770 * Called by the user via ioctl.
1771 *
1772 * RETURNS:
1773 * Zero on success, errno on failure.
1774 */
1775 int drm_mode_getfb(struct drm_device *dev,
1776 void *data, struct drm_file *file_priv)
1777 {
1778 struct drm_mode_fb_cmd *r = data;
1779 struct drm_mode_object *obj;
1780 struct drm_framebuffer *fb;
1781 int ret = 0;
1782
1783 mutex_lock(&dev->mode_config.mutex);
1784 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1785 if (!obj) {
1786 DRM_ERROR("invalid framebuffer id\n");
1787 ret = -EINVAL;
1788 goto out;
1789 }
1790 fb = obj_to_fb(obj);
1791
1792 r->height = fb->height;
1793 r->width = fb->width;
1794 r->depth = fb->depth;
1795 r->bpp = fb->bits_per_pixel;
1796 r->pitch = fb->pitch;
1797 fb->funcs->create_handle(fb, file_priv, &r->handle);
1798
1799 out:
1800 mutex_unlock(&dev->mode_config.mutex);
1801 return ret;
1802 }
1803
1804 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1805 void *data, struct drm_file *file_priv)
1806 {
1807 struct drm_clip_rect __user *clips_ptr;
1808 struct drm_clip_rect *clips = NULL;
1809 struct drm_mode_fb_dirty_cmd *r = data;
1810 struct drm_mode_object *obj;
1811 struct drm_framebuffer *fb;
1812 unsigned flags;
1813 int num_clips;
1814 int ret = 0;
1815
1816 mutex_lock(&dev->mode_config.mutex);
1817 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1818 if (!obj) {
1819 DRM_ERROR("invalid framebuffer id\n");
1820 ret = -EINVAL;
1821 goto out_err1;
1822 }
1823 fb = obj_to_fb(obj);
1824
1825 num_clips = r->num_clips;
1826 clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1827
1828 if (!num_clips != !clips_ptr) {
1829 ret = -EINVAL;
1830 goto out_err1;
1831 }
1832
1833 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1834
1835 /* If userspace annotates copy, clips must come in pairs */
1836 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1837 ret = -EINVAL;
1838 goto out_err1;
1839 }
1840
1841 if (num_clips && clips_ptr) {
1842 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1843 if (!clips) {
1844 ret = -ENOMEM;
1845 goto out_err1;
1846 }
1847
1848 ret = copy_from_user(clips, clips_ptr,
1849 num_clips * sizeof(*clips));
1850 if (ret) {
1851 ret = -EFAULT;
1852 goto out_err2;
1853 }
1854 }
1855
1856 if (fb->funcs->dirty) {
1857 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
1858 clips, num_clips);
1859 } else {
1860 ret = -ENOSYS;
1861 goto out_err2;
1862 }
1863
1864 out_err2:
1865 kfree(clips);
1866 out_err1:
1867 mutex_unlock(&dev->mode_config.mutex);
1868 return ret;
1869 }
1870
1871
1872 /**
1873 * drm_fb_release - remove and free the FBs on this file
1874 * @filp: file * from the ioctl
1875 *
1876 * LOCKING:
1877 * Takes mode config lock.
1878 *
1879 * Destroy all the FBs associated with @filp.
1880 *
1881 * Called by the user via ioctl.
1882 *
1883 * RETURNS:
1884 * Zero on success, errno on failure.
1885 */
1886 void drm_fb_release(struct drm_file *priv)
1887 {
1888 struct drm_device *dev = priv->minor->dev;
1889 struct drm_framebuffer *fb, *tfb;
1890
1891 mutex_lock(&dev->mode_config.mutex);
1892 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1893 list_del(&fb->filp_head);
1894 fb->funcs->destroy(fb);
1895 }
1896 mutex_unlock(&dev->mode_config.mutex);
1897 }
1898
1899 /**
1900 * drm_mode_attachmode - add a mode to the user mode list
1901 * @dev: DRM device
1902 * @connector: connector to add the mode to
1903 * @mode: mode to add
1904 *
1905 * Add @mode to @connector's user mode list.
1906 */
1907 static int drm_mode_attachmode(struct drm_device *dev,
1908 struct drm_connector *connector,
1909 struct drm_display_mode *mode)
1910 {
1911 int ret = 0;
1912
1913 list_add_tail(&mode->head, &connector->user_modes);
1914 return ret;
1915 }
1916
1917 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1918 struct drm_display_mode *mode)
1919 {
1920 struct drm_connector *connector;
1921 int ret = 0;
1922 struct drm_display_mode *dup_mode;
1923 int need_dup = 0;
1924 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1925 if (!connector->encoder)
1926 break;
1927 if (connector->encoder->crtc == crtc) {
1928 if (need_dup)
1929 dup_mode = drm_mode_duplicate(dev, mode);
1930 else
1931 dup_mode = mode;
1932 ret = drm_mode_attachmode(dev, connector, dup_mode);
1933 if (ret)
1934 return ret;
1935 need_dup = 1;
1936 }
1937 }
1938 return 0;
1939 }
1940 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1941
1942 static int drm_mode_detachmode(struct drm_device *dev,
1943 struct drm_connector *connector,
1944 struct drm_display_mode *mode)
1945 {
1946 int found = 0;
1947 int ret = 0;
1948 struct drm_display_mode *match_mode, *t;
1949
1950 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1951 if (drm_mode_equal(match_mode, mode)) {
1952 list_del(&match_mode->head);
1953 drm_mode_destroy(dev, match_mode);
1954 found = 1;
1955 break;
1956 }
1957 }
1958
1959 if (!found)
1960 ret = -EINVAL;
1961
1962 return ret;
1963 }
1964
1965 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1966 {
1967 struct drm_connector *connector;
1968
1969 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1970 drm_mode_detachmode(dev, connector, mode);
1971 }
1972 return 0;
1973 }
1974 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1975
1976 /**
1977 * drm_fb_attachmode - Attach a user mode to an connector
1978 * @inode: inode from the ioctl
1979 * @filp: file * from the ioctl
1980 * @cmd: cmd from ioctl
1981 * @arg: arg from ioctl
1982 *
1983 * This attaches a user specified mode to an connector.
1984 * Called by the user via ioctl.
1985 *
1986 * RETURNS:
1987 * Zero on success, errno on failure.
1988 */
1989 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1990 void *data, struct drm_file *file_priv)
1991 {
1992 struct drm_mode_mode_cmd *mode_cmd = data;
1993 struct drm_connector *connector;
1994 struct drm_display_mode *mode;
1995 struct drm_mode_object *obj;
1996 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1997 int ret = 0;
1998
1999 mutex_lock(&dev->mode_config.mutex);
2000
2001 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2002 if (!obj) {
2003 ret = -EINVAL;
2004 goto out;
2005 }
2006 connector = obj_to_connector(obj);
2007
2008 mode = drm_mode_create(dev);
2009 if (!mode) {
2010 ret = -ENOMEM;
2011 goto out;
2012 }
2013
2014 drm_crtc_convert_umode(mode, umode);
2015
2016 ret = drm_mode_attachmode(dev, connector, mode);
2017 out:
2018 mutex_unlock(&dev->mode_config.mutex);
2019 return ret;
2020 }
2021
2022
2023 /**
2024 * drm_fb_detachmode - Detach a user specified mode from an connector
2025 * @inode: inode from the ioctl
2026 * @filp: file * from the ioctl
2027 * @cmd: cmd from ioctl
2028 * @arg: arg from ioctl
2029 *
2030 * Called by the user via ioctl.
2031 *
2032 * RETURNS:
2033 * Zero on success, errno on failure.
2034 */
2035 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2036 void *data, struct drm_file *file_priv)
2037 {
2038 struct drm_mode_object *obj;
2039 struct drm_mode_mode_cmd *mode_cmd = data;
2040 struct drm_connector *connector;
2041 struct drm_display_mode mode;
2042 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2043 int ret = 0;
2044
2045 mutex_lock(&dev->mode_config.mutex);
2046
2047 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2048 if (!obj) {
2049 ret = -EINVAL;
2050 goto out;
2051 }
2052 connector = obj_to_connector(obj);
2053
2054 drm_crtc_convert_umode(&mode, umode);
2055 ret = drm_mode_detachmode(dev, connector, &mode);
2056 out:
2057 mutex_unlock(&dev->mode_config.mutex);
2058 return ret;
2059 }
2060
2061 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2062 const char *name, int num_values)
2063 {
2064 struct drm_property *property = NULL;
2065
2066 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2067 if (!property)
2068 return NULL;
2069
2070 if (num_values) {
2071 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2072 if (!property->values)
2073 goto fail;
2074 }
2075
2076 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2077 property->flags = flags;
2078 property->num_values = num_values;
2079 INIT_LIST_HEAD(&property->enum_blob_list);
2080
2081 if (name)
2082 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2083
2084 list_add_tail(&property->head, &dev->mode_config.property_list);
2085 return property;
2086 fail:
2087 kfree(property);
2088 return NULL;
2089 }
2090 EXPORT_SYMBOL(drm_property_create);
2091
2092 int drm_property_add_enum(struct drm_property *property, int index,
2093 uint64_t value, const char *name)
2094 {
2095 struct drm_property_enum *prop_enum;
2096
2097 if (!(property->flags & DRM_MODE_PROP_ENUM))
2098 return -EINVAL;
2099
2100 if (!list_empty(&property->enum_blob_list)) {
2101 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2102 if (prop_enum->value == value) {
2103 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2104 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2105 return 0;
2106 }
2107 }
2108 }
2109
2110 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2111 if (!prop_enum)
2112 return -ENOMEM;
2113
2114 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2115 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2116 prop_enum->value = value;
2117
2118 property->values[index] = value;
2119 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2120 return 0;
2121 }
2122 EXPORT_SYMBOL(drm_property_add_enum);
2123
2124 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2125 {
2126 struct drm_property_enum *prop_enum, *pt;
2127
2128 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2129 list_del(&prop_enum->head);
2130 kfree(prop_enum);
2131 }
2132
2133 if (property->num_values)
2134 kfree(property->values);
2135 drm_mode_object_put(dev, &property->base);
2136 list_del(&property->head);
2137 kfree(property);
2138 }
2139 EXPORT_SYMBOL(drm_property_destroy);
2140
2141 int drm_connector_attach_property(struct drm_connector *connector,
2142 struct drm_property *property, uint64_t init_val)
2143 {
2144 int i;
2145
2146 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2147 if (connector->property_ids[i] == 0) {
2148 connector->property_ids[i] = property->base.id;
2149 connector->property_values[i] = init_val;
2150 break;
2151 }
2152 }
2153
2154 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2155 return -EINVAL;
2156 return 0;
2157 }
2158 EXPORT_SYMBOL(drm_connector_attach_property);
2159
2160 int drm_connector_property_set_value(struct drm_connector *connector,
2161 struct drm_property *property, uint64_t value)
2162 {
2163 int i;
2164
2165 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2166 if (connector->property_ids[i] == property->base.id) {
2167 connector->property_values[i] = value;
2168 break;
2169 }
2170 }
2171
2172 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2173 return -EINVAL;
2174 return 0;
2175 }
2176 EXPORT_SYMBOL(drm_connector_property_set_value);
2177
2178 int drm_connector_property_get_value(struct drm_connector *connector,
2179 struct drm_property *property, uint64_t *val)
2180 {
2181 int i;
2182
2183 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2184 if (connector->property_ids[i] == property->base.id) {
2185 *val = connector->property_values[i];
2186 break;
2187 }
2188 }
2189
2190 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2191 return -EINVAL;
2192 return 0;
2193 }
2194 EXPORT_SYMBOL(drm_connector_property_get_value);
2195
2196 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2197 void *data, struct drm_file *file_priv)
2198 {
2199 struct drm_mode_object *obj;
2200 struct drm_mode_get_property *out_resp = data;
2201 struct drm_property *property;
2202 int enum_count = 0;
2203 int blob_count = 0;
2204 int value_count = 0;
2205 int ret = 0, i;
2206 int copied;
2207 struct drm_property_enum *prop_enum;
2208 struct drm_mode_property_enum __user *enum_ptr;
2209 struct drm_property_blob *prop_blob;
2210 uint32_t *blob_id_ptr;
2211 uint64_t __user *values_ptr;
2212 uint32_t __user *blob_length_ptr;
2213
2214 mutex_lock(&dev->mode_config.mutex);
2215 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2216 if (!obj) {
2217 ret = -EINVAL;
2218 goto done;
2219 }
2220 property = obj_to_property(obj);
2221
2222 if (property->flags & DRM_MODE_PROP_ENUM) {
2223 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2224 enum_count++;
2225 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2226 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2227 blob_count++;
2228 }
2229
2230 value_count = property->num_values;
2231
2232 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2233 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2234 out_resp->flags = property->flags;
2235
2236 if ((out_resp->count_values >= value_count) && value_count) {
2237 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2238 for (i = 0; i < value_count; i++) {
2239 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2240 ret = -EFAULT;
2241 goto done;
2242 }
2243 }
2244 }
2245 out_resp->count_values = value_count;
2246
2247 if (property->flags & DRM_MODE_PROP_ENUM) {
2248 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2249 copied = 0;
2250 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2251 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2252
2253 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2254 ret = -EFAULT;
2255 goto done;
2256 }
2257
2258 if (copy_to_user(&enum_ptr[copied].name,
2259 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2260 ret = -EFAULT;
2261 goto done;
2262 }
2263 copied++;
2264 }
2265 }
2266 out_resp->count_enum_blobs = enum_count;
2267 }
2268
2269 if (property->flags & DRM_MODE_PROP_BLOB) {
2270 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2271 copied = 0;
2272 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2273 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2274
2275 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2276 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2277 ret = -EFAULT;
2278 goto done;
2279 }
2280
2281 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2282 ret = -EFAULT;
2283 goto done;
2284 }
2285
2286 copied++;
2287 }
2288 }
2289 out_resp->count_enum_blobs = blob_count;
2290 }
2291 done:
2292 mutex_unlock(&dev->mode_config.mutex);
2293 return ret;
2294 }
2295
2296 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2297 void *data)
2298 {
2299 struct drm_property_blob *blob;
2300
2301 if (!length || !data)
2302 return NULL;
2303
2304 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2305 if (!blob)
2306 return NULL;
2307
2308 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2309 blob->length = length;
2310
2311 memcpy(blob->data, data, length);
2312
2313 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2314
2315 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2316 return blob;
2317 }
2318
2319 static void drm_property_destroy_blob(struct drm_device *dev,
2320 struct drm_property_blob *blob)
2321 {
2322 drm_mode_object_put(dev, &blob->base);
2323 list_del(&blob->head);
2324 kfree(blob);
2325 }
2326
2327 int drm_mode_getblob_ioctl(struct drm_device *dev,
2328 void *data, struct drm_file *file_priv)
2329 {
2330 struct drm_mode_object *obj;
2331 struct drm_mode_get_blob *out_resp = data;
2332 struct drm_property_blob *blob;
2333 int ret = 0;
2334 void *blob_ptr;
2335
2336 mutex_lock(&dev->mode_config.mutex);
2337 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2338 if (!obj) {
2339 ret = -EINVAL;
2340 goto done;
2341 }
2342 blob = obj_to_blob(obj);
2343
2344 if (out_resp->length == blob->length) {
2345 blob_ptr = (void *)(unsigned long)out_resp->data;
2346 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2347 ret = -EFAULT;
2348 goto done;
2349 }
2350 }
2351 out_resp->length = blob->length;
2352
2353 done:
2354 mutex_unlock(&dev->mode_config.mutex);
2355 return ret;
2356 }
2357
2358 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2359 struct edid *edid)
2360 {
2361 struct drm_device *dev = connector->dev;
2362 int ret = 0, size;
2363
2364 if (connector->edid_blob_ptr)
2365 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2366
2367 /* Delete edid, when there is none. */
2368 if (!edid) {
2369 connector->edid_blob_ptr = NULL;
2370 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2371 return ret;
2372 }
2373
2374 size = EDID_LENGTH * (1 + edid->extensions);
2375 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2376 size, edid);
2377
2378 ret = drm_connector_property_set_value(connector,
2379 dev->mode_config.edid_property,
2380 connector->edid_blob_ptr->base.id);
2381
2382 return ret;
2383 }
2384 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2385
2386 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2387 void *data, struct drm_file *file_priv)
2388 {
2389 struct drm_mode_connector_set_property *out_resp = data;
2390 struct drm_mode_object *obj;
2391 struct drm_property *property;
2392 struct drm_connector *connector;
2393 int ret = -EINVAL;
2394 int i;
2395
2396 mutex_lock(&dev->mode_config.mutex);
2397
2398 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2399 if (!obj) {
2400 goto out;
2401 }
2402 connector = obj_to_connector(obj);
2403
2404 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2405 if (connector->property_ids[i] == out_resp->prop_id)
2406 break;
2407 }
2408
2409 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2410 goto out;
2411 }
2412
2413 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2414 if (!obj) {
2415 goto out;
2416 }
2417 property = obj_to_property(obj);
2418
2419 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2420 goto out;
2421
2422 if (property->flags & DRM_MODE_PROP_RANGE) {
2423 if (out_resp->value < property->values[0])
2424 goto out;
2425
2426 if (out_resp->value > property->values[1])
2427 goto out;
2428 } else {
2429 int found = 0;
2430 for (i = 0; i < property->num_values; i++) {
2431 if (property->values[i] == out_resp->value) {
2432 found = 1;
2433 break;
2434 }
2435 }
2436 if (!found) {
2437 goto out;
2438 }
2439 }
2440
2441 /* Do DPMS ourselves */
2442 if (property == connector->dev->mode_config.dpms_property) {
2443 if (connector->funcs->dpms)
2444 (*connector->funcs->dpms)(connector, (int) out_resp->value);
2445 ret = 0;
2446 } else if (connector->funcs->set_property)
2447 ret = connector->funcs->set_property(connector, property, out_resp->value);
2448
2449 /* store the property value if successful */
2450 if (!ret)
2451 drm_connector_property_set_value(connector, property, out_resp->value);
2452 out:
2453 mutex_unlock(&dev->mode_config.mutex);
2454 return ret;
2455 }
2456
2457 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2458 struct drm_encoder *encoder)
2459 {
2460 int i;
2461
2462 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2463 if (connector->encoder_ids[i] == 0) {
2464 connector->encoder_ids[i] = encoder->base.id;
2465 return 0;
2466 }
2467 }
2468 return -ENOMEM;
2469 }
2470 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2471
2472 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2473 struct drm_encoder *encoder)
2474 {
2475 int i;
2476 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2477 if (connector->encoder_ids[i] == encoder->base.id) {
2478 connector->encoder_ids[i] = 0;
2479 if (connector->encoder == encoder)
2480 connector->encoder = NULL;
2481 break;
2482 }
2483 }
2484 }
2485 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2486
2487 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2488 int gamma_size)
2489 {
2490 crtc->gamma_size = gamma_size;
2491
2492 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2493 if (!crtc->gamma_store) {
2494 crtc->gamma_size = 0;
2495 return false;
2496 }
2497
2498 return true;
2499 }
2500 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2501
2502 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2503 void *data, struct drm_file *file_priv)
2504 {
2505 struct drm_mode_crtc_lut *crtc_lut = data;
2506 struct drm_mode_object *obj;
2507 struct drm_crtc *crtc;
2508 void *r_base, *g_base, *b_base;
2509 int size;
2510 int ret = 0;
2511
2512 mutex_lock(&dev->mode_config.mutex);
2513 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2514 if (!obj) {
2515 ret = -EINVAL;
2516 goto out;
2517 }
2518 crtc = obj_to_crtc(obj);
2519
2520 /* memcpy into gamma store */
2521 if (crtc_lut->gamma_size != crtc->gamma_size) {
2522 ret = -EINVAL;
2523 goto out;
2524 }
2525
2526 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2527 r_base = crtc->gamma_store;
2528 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2529 ret = -EFAULT;
2530 goto out;
2531 }
2532
2533 g_base = r_base + size;
2534 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2535 ret = -EFAULT;
2536 goto out;
2537 }
2538
2539 b_base = g_base + size;
2540 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2541 ret = -EFAULT;
2542 goto out;
2543 }
2544
2545 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
2546
2547 out:
2548 mutex_unlock(&dev->mode_config.mutex);
2549 return ret;
2550
2551 }
2552
2553 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2554 void *data, struct drm_file *file_priv)
2555 {
2556 struct drm_mode_crtc_lut *crtc_lut = data;
2557 struct drm_mode_object *obj;
2558 struct drm_crtc *crtc;
2559 void *r_base, *g_base, *b_base;
2560 int size;
2561 int ret = 0;
2562
2563 mutex_lock(&dev->mode_config.mutex);
2564 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2565 if (!obj) {
2566 ret = -EINVAL;
2567 goto out;
2568 }
2569 crtc = obj_to_crtc(obj);
2570
2571 /* memcpy into gamma store */
2572 if (crtc_lut->gamma_size != crtc->gamma_size) {
2573 ret = -EINVAL;
2574 goto out;
2575 }
2576
2577 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2578 r_base = crtc->gamma_store;
2579 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2580 ret = -EFAULT;
2581 goto out;
2582 }
2583
2584 g_base = r_base + size;
2585 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2586 ret = -EFAULT;
2587 goto out;
2588 }
2589
2590 b_base = g_base + size;
2591 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2592 ret = -EFAULT;
2593 goto out;
2594 }
2595 out:
2596 mutex_unlock(&dev->mode_config.mutex);
2597 return ret;
2598 }
2599
2600 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2601 void *data, struct drm_file *file_priv)
2602 {
2603 struct drm_mode_crtc_page_flip *page_flip = data;
2604 struct drm_mode_object *obj;
2605 struct drm_crtc *crtc;
2606 struct drm_framebuffer *fb;
2607 struct drm_pending_vblank_event *e = NULL;
2608 unsigned long flags;
2609 int ret = -EINVAL;
2610
2611 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2612 page_flip->reserved != 0)
2613 return -EINVAL;
2614
2615 mutex_lock(&dev->mode_config.mutex);
2616 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2617 if (!obj)
2618 goto out;
2619 crtc = obj_to_crtc(obj);
2620
2621 if (crtc->fb == NULL) {
2622 /* The framebuffer is currently unbound, presumably
2623 * due to a hotplug event, that userspace has not
2624 * yet discovered.
2625 */
2626 ret = -EBUSY;
2627 goto out;
2628 }
2629
2630 if (crtc->funcs->page_flip == NULL)
2631 goto out;
2632
2633 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2634 if (!obj)
2635 goto out;
2636 fb = obj_to_fb(obj);
2637
2638 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2639 ret = -ENOMEM;
2640 spin_lock_irqsave(&dev->event_lock, flags);
2641 if (file_priv->event_space < sizeof e->event) {
2642 spin_unlock_irqrestore(&dev->event_lock, flags);
2643 goto out;
2644 }
2645 file_priv->event_space -= sizeof e->event;
2646 spin_unlock_irqrestore(&dev->event_lock, flags);
2647
2648 e = kzalloc(sizeof *e, GFP_KERNEL);
2649 if (e == NULL) {
2650 spin_lock_irqsave(&dev->event_lock, flags);
2651 file_priv->event_space += sizeof e->event;
2652 spin_unlock_irqrestore(&dev->event_lock, flags);
2653 goto out;
2654 }
2655
2656 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2657 e->event.base.length = sizeof e->event;
2658 e->event.user_data = page_flip->user_data;
2659 e->base.event = &e->event.base;
2660 e->base.file_priv = file_priv;
2661 e->base.destroy =
2662 (void (*) (struct drm_pending_event *)) kfree;
2663 }
2664
2665 ret = crtc->funcs->page_flip(crtc, fb, e);
2666 if (ret) {
2667 spin_lock_irqsave(&dev->event_lock, flags);
2668 file_priv->event_space += sizeof e->event;
2669 spin_unlock_irqrestore(&dev->event_lock, flags);
2670 kfree(e);
2671 }
2672
2673 out:
2674 mutex_unlock(&dev->mode_config.mutex);
2675 return ret;
2676 }
2677
2678 void drm_mode_config_reset(struct drm_device *dev)
2679 {
2680 struct drm_crtc *crtc;
2681 struct drm_encoder *encoder;
2682 struct drm_connector *connector;
2683
2684 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
2685 if (crtc->funcs->reset)
2686 crtc->funcs->reset(crtc);
2687
2688 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
2689 if (encoder->funcs->reset)
2690 encoder->funcs->reset(encoder);
2691
2692 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
2693 if (connector->funcs->reset)
2694 connector->funcs->reset(connector);
2695 }
2696 EXPORT_SYMBOL(drm_mode_config_reset);
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