Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
[linux-2.6.git] / drivers / gpu / drm / drm_crtc.c
1 /*
2  * Copyright (c) 2006-2008 Intel Corporation
3  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4  * Copyright (c) 2008 Red Hat Inc.
5  *
6  * DRM core CRTC related functions
7  *
8  * Permission to use, copy, modify, distribute, and sell this software and its
9  * documentation for any purpose is hereby granted without fee, provided that
10  * the above copyright notice appear in all copies and that both that copyright
11  * notice and this permission notice appear in supporting documentation, and
12  * that the name of the copyright holders not be used in advertising or
13  * publicity pertaining to distribution of the software without specific,
14  * written prior permission.  The copyright holders make no representations
15  * about the suitability of this software for any purpose.  It is provided "as
16  * is" without express or implied warranty.
17  *
18  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24  * OF THIS SOFTWARE.
25  *
26  * Authors:
27  *      Keith Packard
28  *      Eric Anholt <eric@anholt.net>
29  *      Dave Airlie <airlied@linux.ie>
30  *      Jesse Barnes <jesse.barnes@intel.com>
31  */
32 #include <linux/list.h>
33 #include "drm.h"
34 #include "drmP.h"
35 #include "drm_crtc.h"
36
37 struct drm_prop_enum_list {
38         int type;
39         char *name;
40 };
41
42 /* Avoid boilerplate.  I'm tired of typing. */
43 #define DRM_ENUM_NAME_FN(fnname, list)                          \
44         char *fnname(int val)                                   \
45         {                                                       \
46                 int i;                                          \
47                 for (i = 0; i < ARRAY_SIZE(list); i++) {        \
48                         if (list[i].type == val)                \
49                                 return list[i].name;            \
50                 }                                               \
51                 return "(unknown)";                             \
52         }
53
54 /*
55  * Global properties
56  */
57 static struct drm_prop_enum_list drm_dpms_enum_list[] =
58 {       { DRM_MODE_DPMS_ON, "On" },
59         { DRM_MODE_DPMS_STANDBY, "Standby" },
60         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
61         { DRM_MODE_DPMS_OFF, "Off" }
62 };
63
64 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
65
66 /*
67  * Optional properties
68  */
69 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
70 {
71         { DRM_MODE_SCALE_NONE, "None" },
72         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
73         { DRM_MODE_SCALE_CENTER, "Center" },
74         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
75 };
76
77 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
78 {
79         { DRM_MODE_DITHERING_OFF, "Off" },
80         { DRM_MODE_DITHERING_ON, "On" },
81 };
82
83 /*
84  * Non-global properties, but "required" for certain connectors.
85  */
86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
87 {
88         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
89         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
90         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
91 };
92
93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
94
95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
96 {
97         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
98         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
99         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
100 };
101
102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
103                  drm_dvi_i_subconnector_enum_list)
104
105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
106 {
107         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
108         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
109         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
110         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
111         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
112 };
113
114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
115
116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
117 {
118         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
119         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
121         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
123 };
124
125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
126                  drm_tv_subconnector_enum_list)
127
128 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
129         { DRM_MODE_DIRTY_OFF,      "Off"      },
130         { DRM_MODE_DIRTY_ON,       "On"       },
131         { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
132 };
133
134 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
135                  drm_dirty_info_enum_list)
136
137 struct drm_conn_prop_enum_list {
138         int type;
139         char *name;
140         int count;
141 };
142
143 /*
144  * Connector and encoder types.
145  */
146 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
147 {       { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
148         { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
149         { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
150         { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
151         { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
152         { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
153         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
154         { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
155         { DRM_MODE_CONNECTOR_Component, "Component", 0 },
156         { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
157         { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
158         { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
159         { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
160         { DRM_MODE_CONNECTOR_TV, "TV", 0 },
161 };
162
163 static struct drm_prop_enum_list drm_encoder_enum_list[] =
164 {       { DRM_MODE_ENCODER_NONE, "None" },
165         { DRM_MODE_ENCODER_DAC, "DAC" },
166         { DRM_MODE_ENCODER_TMDS, "TMDS" },
167         { DRM_MODE_ENCODER_LVDS, "LVDS" },
168         { DRM_MODE_ENCODER_TVDAC, "TV" },
169 };
170
171 char *drm_get_encoder_name(struct drm_encoder *encoder)
172 {
173         static char buf[32];
174
175         snprintf(buf, 32, "%s-%d",
176                  drm_encoder_enum_list[encoder->encoder_type].name,
177                  encoder->base.id);
178         return buf;
179 }
180 EXPORT_SYMBOL(drm_get_encoder_name);
181
182 char *drm_get_connector_name(struct drm_connector *connector)
183 {
184         static char buf[32];
185
186         snprintf(buf, 32, "%s-%d",
187                  drm_connector_enum_list[connector->connector_type].name,
188                  connector->connector_type_id);
189         return buf;
190 }
191 EXPORT_SYMBOL(drm_get_connector_name);
192
193 char *drm_get_connector_status_name(enum drm_connector_status status)
194 {
195         if (status == connector_status_connected)
196                 return "connected";
197         else if (status == connector_status_disconnected)
198                 return "disconnected";
199         else
200                 return "unknown";
201 }
202
203 /**
204  * drm_mode_object_get - allocate a new identifier
205  * @dev: DRM device
206  * @ptr: object pointer, used to generate unique ID
207  * @type: object type
208  *
209  * LOCKING:
210  *
211  * Create a unique identifier based on @ptr in @dev's identifier space.  Used
212  * for tracking modes, CRTCs and connectors.
213  *
214  * RETURNS:
215  * New unique (relative to other objects in @dev) integer identifier for the
216  * object.
217  */
218 static int drm_mode_object_get(struct drm_device *dev,
219                                struct drm_mode_object *obj, uint32_t obj_type)
220 {
221         int new_id = 0;
222         int ret;
223
224 again:
225         if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
226                 DRM_ERROR("Ran out memory getting a mode number\n");
227                 return -EINVAL;
228         }
229
230         mutex_lock(&dev->mode_config.idr_mutex);
231         ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
232         mutex_unlock(&dev->mode_config.idr_mutex);
233         if (ret == -EAGAIN)
234                 goto again;
235
236         obj->id = new_id;
237         obj->type = obj_type;
238         return 0;
239 }
240
241 /**
242  * drm_mode_object_put - free an identifer
243  * @dev: DRM device
244  * @id: ID to free
245  *
246  * LOCKING:
247  * Caller must hold DRM mode_config lock.
248  *
249  * Free @id from @dev's unique identifier pool.
250  */
251 static void drm_mode_object_put(struct drm_device *dev,
252                                 struct drm_mode_object *object)
253 {
254         mutex_lock(&dev->mode_config.idr_mutex);
255         idr_remove(&dev->mode_config.crtc_idr, object->id);
256         mutex_unlock(&dev->mode_config.idr_mutex);
257 }
258
259 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
260                 uint32_t id, uint32_t type)
261 {
262         struct drm_mode_object *obj = NULL;
263
264         mutex_lock(&dev->mode_config.idr_mutex);
265         obj = idr_find(&dev->mode_config.crtc_idr, id);
266         if (!obj || (obj->type != type) || (obj->id != id))
267                 obj = NULL;
268         mutex_unlock(&dev->mode_config.idr_mutex);
269
270         return obj;
271 }
272 EXPORT_SYMBOL(drm_mode_object_find);
273
274 /**
275  * drm_framebuffer_init - initialize a framebuffer
276  * @dev: DRM device
277  *
278  * LOCKING:
279  * Caller must hold mode config lock.
280  *
281  * Allocates an ID for the framebuffer's parent mode object, sets its mode
282  * functions & device file and adds it to the master fd list.
283  *
284  * RETURNS:
285  * Zero on success, error code on failure.
286  */
287 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
288                          const struct drm_framebuffer_funcs *funcs)
289 {
290         int ret;
291
292         ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
293         if (ret) {
294                 return ret;
295         }
296
297         fb->dev = dev;
298         fb->funcs = funcs;
299         dev->mode_config.num_fb++;
300         list_add(&fb->head, &dev->mode_config.fb_list);
301
302         return 0;
303 }
304 EXPORT_SYMBOL(drm_framebuffer_init);
305
306 /**
307  * drm_framebuffer_cleanup - remove a framebuffer object
308  * @fb: framebuffer to remove
309  *
310  * LOCKING:
311  * Caller must hold mode config lock.
312  *
313  * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
314  * it, setting it to NULL.
315  */
316 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
317 {
318         struct drm_device *dev = fb->dev;
319         struct drm_crtc *crtc;
320         struct drm_mode_set set;
321         int ret;
322
323         /* remove from any CRTC */
324         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
325                 if (crtc->fb == fb) {
326                         /* should turn off the crtc */
327                         memset(&set, 0, sizeof(struct drm_mode_set));
328                         set.crtc = crtc;
329                         set.fb = NULL;
330                         ret = crtc->funcs->set_config(&set);
331                         if (ret)
332                                 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
333                 }
334         }
335
336         drm_mode_object_put(dev, &fb->base);
337         list_del(&fb->head);
338         dev->mode_config.num_fb--;
339 }
340 EXPORT_SYMBOL(drm_framebuffer_cleanup);
341
342 /**
343  * drm_crtc_init - Initialise a new CRTC object
344  * @dev: DRM device
345  * @crtc: CRTC object to init
346  * @funcs: callbacks for the new CRTC
347  *
348  * LOCKING:
349  * Caller must hold mode config lock.
350  *
351  * Inits a new object created as base part of an driver crtc object.
352  */
353 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
354                    const struct drm_crtc_funcs *funcs)
355 {
356         crtc->dev = dev;
357         crtc->funcs = funcs;
358
359         mutex_lock(&dev->mode_config.mutex);
360         drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
361
362         list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
363         dev->mode_config.num_crtc++;
364         mutex_unlock(&dev->mode_config.mutex);
365 }
366 EXPORT_SYMBOL(drm_crtc_init);
367
368 /**
369  * drm_crtc_cleanup - Cleans up the core crtc usage.
370  * @crtc: CRTC to cleanup
371  *
372  * LOCKING:
373  * Caller must hold mode config lock.
374  *
375  * Cleanup @crtc. Removes from drm modesetting space
376  * does NOT free object, caller does that.
377  */
378 void drm_crtc_cleanup(struct drm_crtc *crtc)
379 {
380         struct drm_device *dev = crtc->dev;
381
382         if (crtc->gamma_store) {
383                 kfree(crtc->gamma_store);
384                 crtc->gamma_store = NULL;
385         }
386
387         drm_mode_object_put(dev, &crtc->base);
388         list_del(&crtc->head);
389         dev->mode_config.num_crtc--;
390 }
391 EXPORT_SYMBOL(drm_crtc_cleanup);
392
393 /**
394  * drm_mode_probed_add - add a mode to a connector's probed mode list
395  * @connector: connector the new mode
396  * @mode: mode data
397  *
398  * LOCKING:
399  * Caller must hold mode config lock.
400  *
401  * Add @mode to @connector's mode list for later use.
402  */
403 void drm_mode_probed_add(struct drm_connector *connector,
404                          struct drm_display_mode *mode)
405 {
406         list_add(&mode->head, &connector->probed_modes);
407 }
408 EXPORT_SYMBOL(drm_mode_probed_add);
409
410 /**
411  * drm_mode_remove - remove and free a mode
412  * @connector: connector list to modify
413  * @mode: mode to remove
414  *
415  * LOCKING:
416  * Caller must hold mode config lock.
417  *
418  * Remove @mode from @connector's mode list, then free it.
419  */
420 void drm_mode_remove(struct drm_connector *connector,
421                      struct drm_display_mode *mode)
422 {
423         list_del(&mode->head);
424         kfree(mode);
425 }
426 EXPORT_SYMBOL(drm_mode_remove);
427
428 /**
429  * drm_connector_init - Init a preallocated connector
430  * @dev: DRM device
431  * @connector: the connector to init
432  * @funcs: callbacks for this connector
433  * @name: user visible name of the connector
434  *
435  * LOCKING:
436  * Caller must hold @dev's mode_config lock.
437  *
438  * Initialises a preallocated connector. Connectors should be
439  * subclassed as part of driver connector objects.
440  */
441 void drm_connector_init(struct drm_device *dev,
442                      struct drm_connector *connector,
443                      const struct drm_connector_funcs *funcs,
444                      int connector_type)
445 {
446         mutex_lock(&dev->mode_config.mutex);
447
448         connector->dev = dev;
449         connector->funcs = funcs;
450         drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
451         connector->connector_type = connector_type;
452         connector->connector_type_id =
453                 ++drm_connector_enum_list[connector_type].count; /* TODO */
454         INIT_LIST_HEAD(&connector->user_modes);
455         INIT_LIST_HEAD(&connector->probed_modes);
456         INIT_LIST_HEAD(&connector->modes);
457         connector->edid_blob_ptr = NULL;
458
459         list_add_tail(&connector->head, &dev->mode_config.connector_list);
460         dev->mode_config.num_connector++;
461
462         drm_connector_attach_property(connector,
463                                       dev->mode_config.edid_property, 0);
464
465         drm_connector_attach_property(connector,
466                                       dev->mode_config.dpms_property, 0);
467
468         mutex_unlock(&dev->mode_config.mutex);
469 }
470 EXPORT_SYMBOL(drm_connector_init);
471
472 /**
473  * drm_connector_cleanup - cleans up an initialised connector
474  * @connector: connector to cleanup
475  *
476  * LOCKING:
477  * Caller must hold @dev's mode_config lock.
478  *
479  * Cleans up the connector but doesn't free the object.
480  */
481 void drm_connector_cleanup(struct drm_connector *connector)
482 {
483         struct drm_device *dev = connector->dev;
484         struct drm_display_mode *mode, *t;
485
486         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
487                 drm_mode_remove(connector, mode);
488
489         list_for_each_entry_safe(mode, t, &connector->modes, head)
490                 drm_mode_remove(connector, mode);
491
492         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
493                 drm_mode_remove(connector, mode);
494
495         kfree(connector->fb_helper_private);
496         mutex_lock(&dev->mode_config.mutex);
497         drm_mode_object_put(dev, &connector->base);
498         list_del(&connector->head);
499         mutex_unlock(&dev->mode_config.mutex);
500 }
501 EXPORT_SYMBOL(drm_connector_cleanup);
502
503 void drm_encoder_init(struct drm_device *dev,
504                       struct drm_encoder *encoder,
505                       const struct drm_encoder_funcs *funcs,
506                       int encoder_type)
507 {
508         mutex_lock(&dev->mode_config.mutex);
509
510         encoder->dev = dev;
511
512         drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
513         encoder->encoder_type = encoder_type;
514         encoder->funcs = funcs;
515
516         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
517         dev->mode_config.num_encoder++;
518
519         mutex_unlock(&dev->mode_config.mutex);
520 }
521 EXPORT_SYMBOL(drm_encoder_init);
522
523 void drm_encoder_cleanup(struct drm_encoder *encoder)
524 {
525         struct drm_device *dev = encoder->dev;
526         mutex_lock(&dev->mode_config.mutex);
527         drm_mode_object_put(dev, &encoder->base);
528         list_del(&encoder->head);
529         mutex_unlock(&dev->mode_config.mutex);
530 }
531 EXPORT_SYMBOL(drm_encoder_cleanup);
532
533 /**
534  * drm_mode_create - create a new display mode
535  * @dev: DRM device
536  *
537  * LOCKING:
538  * Caller must hold DRM mode_config lock.
539  *
540  * Create a new drm_display_mode, give it an ID, and return it.
541  *
542  * RETURNS:
543  * Pointer to new mode on success, NULL on error.
544  */
545 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
546 {
547         struct drm_display_mode *nmode;
548
549         nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
550         if (!nmode)
551                 return NULL;
552
553         drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
554         return nmode;
555 }
556 EXPORT_SYMBOL(drm_mode_create);
557
558 /**
559  * drm_mode_destroy - remove a mode
560  * @dev: DRM device
561  * @mode: mode to remove
562  *
563  * LOCKING:
564  * Caller must hold mode config lock.
565  *
566  * Free @mode's unique identifier, then free it.
567  */
568 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
569 {
570         drm_mode_object_put(dev, &mode->base);
571
572         kfree(mode);
573 }
574 EXPORT_SYMBOL(drm_mode_destroy);
575
576 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
577 {
578         struct drm_property *edid;
579         struct drm_property *dpms;
580         int i;
581
582         /*
583          * Standard properties (apply to all connectors)
584          */
585         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
586                                    DRM_MODE_PROP_IMMUTABLE,
587                                    "EDID", 0);
588         dev->mode_config.edid_property = edid;
589
590         dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
591                                    "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
592         for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
593                 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
594                                       drm_dpms_enum_list[i].name);
595         dev->mode_config.dpms_property = dpms;
596
597         return 0;
598 }
599
600 /**
601  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
602  * @dev: DRM device
603  *
604  * Called by a driver the first time a DVI-I connector is made.
605  */
606 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
607 {
608         struct drm_property *dvi_i_selector;
609         struct drm_property *dvi_i_subconnector;
610         int i;
611
612         if (dev->mode_config.dvi_i_select_subconnector_property)
613                 return 0;
614
615         dvi_i_selector =
616                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
617                                     "select subconnector",
618                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
619         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
620                 drm_property_add_enum(dvi_i_selector, i,
621                                       drm_dvi_i_select_enum_list[i].type,
622                                       drm_dvi_i_select_enum_list[i].name);
623         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
624
625         dvi_i_subconnector =
626                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
627                                     DRM_MODE_PROP_IMMUTABLE,
628                                     "subconnector",
629                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
630         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
631                 drm_property_add_enum(dvi_i_subconnector, i,
632                                       drm_dvi_i_subconnector_enum_list[i].type,
633                                       drm_dvi_i_subconnector_enum_list[i].name);
634         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
635
636         return 0;
637 }
638 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
639
640 /**
641  * drm_create_tv_properties - create TV specific connector properties
642  * @dev: DRM device
643  * @num_modes: number of different TV formats (modes) supported
644  * @modes: array of pointers to strings containing name of each format
645  *
646  * Called by a driver's TV initialization routine, this function creates
647  * the TV specific connector properties for a given device.  Caller is
648  * responsible for allocating a list of format names and passing them to
649  * this routine.
650  */
651 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
652                                   char *modes[])
653 {
654         struct drm_property *tv_selector;
655         struct drm_property *tv_subconnector;
656         int i;
657
658         if (dev->mode_config.tv_select_subconnector_property)
659                 return 0;
660
661         /*
662          * Basic connector properties
663          */
664         tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
665                                           "select subconnector",
666                                           ARRAY_SIZE(drm_tv_select_enum_list));
667         for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
668                 drm_property_add_enum(tv_selector, i,
669                                       drm_tv_select_enum_list[i].type,
670                                       drm_tv_select_enum_list[i].name);
671         dev->mode_config.tv_select_subconnector_property = tv_selector;
672
673         tv_subconnector =
674                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
675                                     DRM_MODE_PROP_IMMUTABLE, "subconnector",
676                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
677         for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
678                 drm_property_add_enum(tv_subconnector, i,
679                                       drm_tv_subconnector_enum_list[i].type,
680                                       drm_tv_subconnector_enum_list[i].name);
681         dev->mode_config.tv_subconnector_property = tv_subconnector;
682
683         /*
684          * Other, TV specific properties: margins & TV modes.
685          */
686         dev->mode_config.tv_left_margin_property =
687                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
688                                     "left margin", 2);
689         dev->mode_config.tv_left_margin_property->values[0] = 0;
690         dev->mode_config.tv_left_margin_property->values[1] = 100;
691
692         dev->mode_config.tv_right_margin_property =
693                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
694                                     "right margin", 2);
695         dev->mode_config.tv_right_margin_property->values[0] = 0;
696         dev->mode_config.tv_right_margin_property->values[1] = 100;
697
698         dev->mode_config.tv_top_margin_property =
699                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
700                                     "top margin", 2);
701         dev->mode_config.tv_top_margin_property->values[0] = 0;
702         dev->mode_config.tv_top_margin_property->values[1] = 100;
703
704         dev->mode_config.tv_bottom_margin_property =
705                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
706                                     "bottom margin", 2);
707         dev->mode_config.tv_bottom_margin_property->values[0] = 0;
708         dev->mode_config.tv_bottom_margin_property->values[1] = 100;
709
710         dev->mode_config.tv_mode_property =
711                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
712                                     "mode", num_modes);
713         for (i = 0; i < num_modes; i++)
714                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
715                                       i, modes[i]);
716
717         dev->mode_config.tv_brightness_property =
718                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
719                                     "brightness", 2);
720         dev->mode_config.tv_brightness_property->values[0] = 0;
721         dev->mode_config.tv_brightness_property->values[1] = 100;
722
723         dev->mode_config.tv_contrast_property =
724                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
725                                     "contrast", 2);
726         dev->mode_config.tv_contrast_property->values[0] = 0;
727         dev->mode_config.tv_contrast_property->values[1] = 100;
728
729         dev->mode_config.tv_flicker_reduction_property =
730                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
731                                     "flicker reduction", 2);
732         dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
733         dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
734
735         dev->mode_config.tv_overscan_property =
736                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
737                                     "overscan", 2);
738         dev->mode_config.tv_overscan_property->values[0] = 0;
739         dev->mode_config.tv_overscan_property->values[1] = 100;
740
741         dev->mode_config.tv_saturation_property =
742                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
743                                     "saturation", 2);
744         dev->mode_config.tv_saturation_property->values[0] = 0;
745         dev->mode_config.tv_saturation_property->values[1] = 100;
746
747         dev->mode_config.tv_hue_property =
748                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
749                                     "hue", 2);
750         dev->mode_config.tv_hue_property->values[0] = 0;
751         dev->mode_config.tv_hue_property->values[1] = 100;
752
753         return 0;
754 }
755 EXPORT_SYMBOL(drm_mode_create_tv_properties);
756
757 /**
758  * drm_mode_create_scaling_mode_property - create scaling mode property
759  * @dev: DRM device
760  *
761  * Called by a driver the first time it's needed, must be attached to desired
762  * connectors.
763  */
764 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
765 {
766         struct drm_property *scaling_mode;
767         int i;
768
769         if (dev->mode_config.scaling_mode_property)
770                 return 0;
771
772         scaling_mode =
773                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
774                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
775         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
776                 drm_property_add_enum(scaling_mode, i,
777                                       drm_scaling_mode_enum_list[i].type,
778                                       drm_scaling_mode_enum_list[i].name);
779
780         dev->mode_config.scaling_mode_property = scaling_mode;
781
782         return 0;
783 }
784 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
785
786 /**
787  * drm_mode_create_dithering_property - create dithering property
788  * @dev: DRM device
789  *
790  * Called by a driver the first time it's needed, must be attached to desired
791  * connectors.
792  */
793 int drm_mode_create_dithering_property(struct drm_device *dev)
794 {
795         struct drm_property *dithering_mode;
796         int i;
797
798         if (dev->mode_config.dithering_mode_property)
799                 return 0;
800
801         dithering_mode =
802                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
803                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
804         for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
805                 drm_property_add_enum(dithering_mode, i,
806                                       drm_dithering_mode_enum_list[i].type,
807                                       drm_dithering_mode_enum_list[i].name);
808         dev->mode_config.dithering_mode_property = dithering_mode;
809
810         return 0;
811 }
812 EXPORT_SYMBOL(drm_mode_create_dithering_property);
813
814 /**
815  * drm_mode_create_dirty_property - create dirty property
816  * @dev: DRM device
817  *
818  * Called by a driver the first time it's needed, must be attached to desired
819  * connectors.
820  */
821 int drm_mode_create_dirty_info_property(struct drm_device *dev)
822 {
823         struct drm_property *dirty_info;
824         int i;
825
826         if (dev->mode_config.dirty_info_property)
827                 return 0;
828
829         dirty_info =
830                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
831                                     DRM_MODE_PROP_IMMUTABLE,
832                                     "dirty",
833                                     ARRAY_SIZE(drm_dirty_info_enum_list));
834         for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
835                 drm_property_add_enum(dirty_info, i,
836                                       drm_dirty_info_enum_list[i].type,
837                                       drm_dirty_info_enum_list[i].name);
838         dev->mode_config.dirty_info_property = dirty_info;
839
840         return 0;
841 }
842 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
843
844 /**
845  * drm_mode_config_init - initialize DRM mode_configuration structure
846  * @dev: DRM device
847  *
848  * LOCKING:
849  * None, should happen single threaded at init time.
850  *
851  * Initialize @dev's mode_config structure, used for tracking the graphics
852  * configuration of @dev.
853  */
854 void drm_mode_config_init(struct drm_device *dev)
855 {
856         mutex_init(&dev->mode_config.mutex);
857         mutex_init(&dev->mode_config.idr_mutex);
858         INIT_LIST_HEAD(&dev->mode_config.fb_list);
859         INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
860         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
861         INIT_LIST_HEAD(&dev->mode_config.connector_list);
862         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
863         INIT_LIST_HEAD(&dev->mode_config.property_list);
864         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
865         idr_init(&dev->mode_config.crtc_idr);
866
867         mutex_lock(&dev->mode_config.mutex);
868         drm_mode_create_standard_connector_properties(dev);
869         mutex_unlock(&dev->mode_config.mutex);
870
871         /* Just to be sure */
872         dev->mode_config.num_fb = 0;
873         dev->mode_config.num_connector = 0;
874         dev->mode_config.num_crtc = 0;
875         dev->mode_config.num_encoder = 0;
876 }
877 EXPORT_SYMBOL(drm_mode_config_init);
878
879 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
880 {
881         uint32_t total_objects = 0;
882
883         total_objects += dev->mode_config.num_crtc;
884         total_objects += dev->mode_config.num_connector;
885         total_objects += dev->mode_config.num_encoder;
886
887         if (total_objects == 0)
888                 return -EINVAL;
889
890         group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
891         if (!group->id_list)
892                 return -ENOMEM;
893
894         group->num_crtcs = 0;
895         group->num_connectors = 0;
896         group->num_encoders = 0;
897         return 0;
898 }
899
900 int drm_mode_group_init_legacy_group(struct drm_device *dev,
901                                      struct drm_mode_group *group)
902 {
903         struct drm_crtc *crtc;
904         struct drm_encoder *encoder;
905         struct drm_connector *connector;
906         int ret;
907
908         if ((ret = drm_mode_group_init(dev, group)))
909                 return ret;
910
911         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
912                 group->id_list[group->num_crtcs++] = crtc->base.id;
913
914         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
915                 group->id_list[group->num_crtcs + group->num_encoders++] =
916                 encoder->base.id;
917
918         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
919                 group->id_list[group->num_crtcs + group->num_encoders +
920                                group->num_connectors++] = connector->base.id;
921
922         return 0;
923 }
924
925 /**
926  * drm_mode_config_cleanup - free up DRM mode_config info
927  * @dev: DRM device
928  *
929  * LOCKING:
930  * Caller must hold mode config lock.
931  *
932  * Free up all the connectors and CRTCs associated with this DRM device, then
933  * free up the framebuffers and associated buffer objects.
934  *
935  * FIXME: cleanup any dangling user buffer objects too
936  */
937 void drm_mode_config_cleanup(struct drm_device *dev)
938 {
939         struct drm_connector *connector, *ot;
940         struct drm_crtc *crtc, *ct;
941         struct drm_encoder *encoder, *enct;
942         struct drm_framebuffer *fb, *fbt;
943         struct drm_property *property, *pt;
944
945         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
946                                  head) {
947                 encoder->funcs->destroy(encoder);
948         }
949
950         list_for_each_entry_safe(connector, ot,
951                                  &dev->mode_config.connector_list, head) {
952                 connector->funcs->destroy(connector);
953         }
954
955         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
956                                  head) {
957                 drm_property_destroy(dev, property);
958         }
959
960         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
961                 fb->funcs->destroy(fb);
962         }
963
964         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
965                 crtc->funcs->destroy(crtc);
966         }
967
968 }
969 EXPORT_SYMBOL(drm_mode_config_cleanup);
970
971 /**
972  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
973  * @out: drm_mode_modeinfo struct to return to the user
974  * @in: drm_display_mode to use
975  *
976  * LOCKING:
977  * None.
978  *
979  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
980  * the user.
981  */
982 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
983                                struct drm_display_mode *in)
984 {
985         out->clock = in->clock;
986         out->hdisplay = in->hdisplay;
987         out->hsync_start = in->hsync_start;
988         out->hsync_end = in->hsync_end;
989         out->htotal = in->htotal;
990         out->hskew = in->hskew;
991         out->vdisplay = in->vdisplay;
992         out->vsync_start = in->vsync_start;
993         out->vsync_end = in->vsync_end;
994         out->vtotal = in->vtotal;
995         out->vscan = in->vscan;
996         out->vrefresh = in->vrefresh;
997         out->flags = in->flags;
998         out->type = in->type;
999         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1000         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1001 }
1002
1003 /**
1004  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1005  * @out: drm_display_mode to return to the user
1006  * @in: drm_mode_modeinfo to use
1007  *
1008  * LOCKING:
1009  * None.
1010  *
1011  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1012  * the caller.
1013  */
1014 void drm_crtc_convert_umode(struct drm_display_mode *out,
1015                             struct drm_mode_modeinfo *in)
1016 {
1017         out->clock = in->clock;
1018         out->hdisplay = in->hdisplay;
1019         out->hsync_start = in->hsync_start;
1020         out->hsync_end = in->hsync_end;
1021         out->htotal = in->htotal;
1022         out->hskew = in->hskew;
1023         out->vdisplay = in->vdisplay;
1024         out->vsync_start = in->vsync_start;
1025         out->vsync_end = in->vsync_end;
1026         out->vtotal = in->vtotal;
1027         out->vscan = in->vscan;
1028         out->vrefresh = in->vrefresh;
1029         out->flags = in->flags;
1030         out->type = in->type;
1031         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1032         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1033 }
1034
1035 /**
1036  * drm_mode_getresources - get graphics configuration
1037  * @inode: inode from the ioctl
1038  * @filp: file * from the ioctl
1039  * @cmd: cmd from ioctl
1040  * @arg: arg from ioctl
1041  *
1042  * LOCKING:
1043  * Takes mode config lock.
1044  *
1045  * Construct a set of configuration description structures and return
1046  * them to the user, including CRTC, connector and framebuffer configuration.
1047  *
1048  * Called by the user via ioctl.
1049  *
1050  * RETURNS:
1051  * Zero on success, errno on failure.
1052  */
1053 int drm_mode_getresources(struct drm_device *dev, void *data,
1054                           struct drm_file *file_priv)
1055 {
1056         struct drm_mode_card_res *card_res = data;
1057         struct list_head *lh;
1058         struct drm_framebuffer *fb;
1059         struct drm_connector *connector;
1060         struct drm_crtc *crtc;
1061         struct drm_encoder *encoder;
1062         int ret = 0;
1063         int connector_count = 0;
1064         int crtc_count = 0;
1065         int fb_count = 0;
1066         int encoder_count = 0;
1067         int copied = 0, i;
1068         uint32_t __user *fb_id;
1069         uint32_t __user *crtc_id;
1070         uint32_t __user *connector_id;
1071         uint32_t __user *encoder_id;
1072         struct drm_mode_group *mode_group;
1073
1074         mutex_lock(&dev->mode_config.mutex);
1075
1076         /*
1077          * For the non-control nodes we need to limit the list of resources
1078          * by IDs in the group list for this node
1079          */
1080         list_for_each(lh, &file_priv->fbs)
1081                 fb_count++;
1082
1083         mode_group = &file_priv->master->minor->mode_group;
1084         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1085
1086                 list_for_each(lh, &dev->mode_config.crtc_list)
1087                         crtc_count++;
1088
1089                 list_for_each(lh, &dev->mode_config.connector_list)
1090                         connector_count++;
1091
1092                 list_for_each(lh, &dev->mode_config.encoder_list)
1093                         encoder_count++;
1094         } else {
1095
1096                 crtc_count = mode_group->num_crtcs;
1097                 connector_count = mode_group->num_connectors;
1098                 encoder_count = mode_group->num_encoders;
1099         }
1100
1101         card_res->max_height = dev->mode_config.max_height;
1102         card_res->min_height = dev->mode_config.min_height;
1103         card_res->max_width = dev->mode_config.max_width;
1104         card_res->min_width = dev->mode_config.min_width;
1105
1106         /* handle this in 4 parts */
1107         /* FBs */
1108         if (card_res->count_fbs >= fb_count) {
1109                 copied = 0;
1110                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1111                 list_for_each_entry(fb, &file_priv->fbs, head) {
1112                         if (put_user(fb->base.id, fb_id + copied)) {
1113                                 ret = -EFAULT;
1114                                 goto out;
1115                         }
1116                         copied++;
1117                 }
1118         }
1119         card_res->count_fbs = fb_count;
1120
1121         /* CRTCs */
1122         if (card_res->count_crtcs >= crtc_count) {
1123                 copied = 0;
1124                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1125                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1126                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1127                                             head) {
1128                                 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1129                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1130                                         ret = -EFAULT;
1131                                         goto out;
1132                                 }
1133                                 copied++;
1134                         }
1135                 } else {
1136                         for (i = 0; i < mode_group->num_crtcs; i++) {
1137                                 if (put_user(mode_group->id_list[i],
1138                                              crtc_id + copied)) {
1139                                         ret = -EFAULT;
1140                                         goto out;
1141                                 }
1142                                 copied++;
1143                         }
1144                 }
1145         }
1146         card_res->count_crtcs = crtc_count;
1147
1148         /* Encoders */
1149         if (card_res->count_encoders >= encoder_count) {
1150                 copied = 0;
1151                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1152                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1153                         list_for_each_entry(encoder,
1154                                             &dev->mode_config.encoder_list,
1155                                             head) {
1156                                 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1157                                           encoder->base.id);
1158                                 if (put_user(encoder->base.id, encoder_id +
1159                                              copied)) {
1160                                         ret = -EFAULT;
1161                                         goto out;
1162                                 }
1163                                 copied++;
1164                         }
1165                 } else {
1166                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1167                                 if (put_user(mode_group->id_list[i],
1168                                              encoder_id + copied)) {
1169                                         ret = -EFAULT;
1170                                         goto out;
1171                                 }
1172                                 copied++;
1173                         }
1174
1175                 }
1176         }
1177         card_res->count_encoders = encoder_count;
1178
1179         /* Connectors */
1180         if (card_res->count_connectors >= connector_count) {
1181                 copied = 0;
1182                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1183                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1184                         list_for_each_entry(connector,
1185                                             &dev->mode_config.connector_list,
1186                                             head) {
1187                                 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1188                                           connector->base.id);
1189                                 if (put_user(connector->base.id,
1190                                              connector_id + copied)) {
1191                                         ret = -EFAULT;
1192                                         goto out;
1193                                 }
1194                                 copied++;
1195                         }
1196                 } else {
1197                         int start = mode_group->num_crtcs +
1198                                 mode_group->num_encoders;
1199                         for (i = start; i < start + mode_group->num_connectors; i++) {
1200                                 if (put_user(mode_group->id_list[i],
1201                                              connector_id + copied)) {
1202                                         ret = -EFAULT;
1203                                         goto out;
1204                                 }
1205                                 copied++;
1206                         }
1207                 }
1208         }
1209         card_res->count_connectors = connector_count;
1210
1211         DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1212                   card_res->count_connectors, card_res->count_encoders);
1213
1214 out:
1215         mutex_unlock(&dev->mode_config.mutex);
1216         return ret;
1217 }
1218
1219 /**
1220  * drm_mode_getcrtc - get CRTC configuration
1221  * @inode: inode from the ioctl
1222  * @filp: file * from the ioctl
1223  * @cmd: cmd from ioctl
1224  * @arg: arg from ioctl
1225  *
1226  * LOCKING:
1227  * Caller? (FIXME)
1228  *
1229  * Construct a CRTC configuration structure to return to the user.
1230  *
1231  * Called by the user via ioctl.
1232  *
1233  * RETURNS:
1234  * Zero on success, errno on failure.
1235  */
1236 int drm_mode_getcrtc(struct drm_device *dev,
1237                      void *data, struct drm_file *file_priv)
1238 {
1239         struct drm_mode_crtc *crtc_resp = data;
1240         struct drm_crtc *crtc;
1241         struct drm_mode_object *obj;
1242         int ret = 0;
1243
1244         mutex_lock(&dev->mode_config.mutex);
1245
1246         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1247                                    DRM_MODE_OBJECT_CRTC);
1248         if (!obj) {
1249                 ret = -EINVAL;
1250                 goto out;
1251         }
1252         crtc = obj_to_crtc(obj);
1253
1254         crtc_resp->x = crtc->x;
1255         crtc_resp->y = crtc->y;
1256         crtc_resp->gamma_size = crtc->gamma_size;
1257         if (crtc->fb)
1258                 crtc_resp->fb_id = crtc->fb->base.id;
1259         else
1260                 crtc_resp->fb_id = 0;
1261
1262         if (crtc->enabled) {
1263
1264                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1265                 crtc_resp->mode_valid = 1;
1266
1267         } else {
1268                 crtc_resp->mode_valid = 0;
1269         }
1270
1271 out:
1272         mutex_unlock(&dev->mode_config.mutex);
1273         return ret;
1274 }
1275
1276 /**
1277  * drm_mode_getconnector - get connector configuration
1278  * @inode: inode from the ioctl
1279  * @filp: file * from the ioctl
1280  * @cmd: cmd from ioctl
1281  * @arg: arg from ioctl
1282  *
1283  * LOCKING:
1284  * Caller? (FIXME)
1285  *
1286  * Construct a connector configuration structure to return to the user.
1287  *
1288  * Called by the user via ioctl.
1289  *
1290  * RETURNS:
1291  * Zero on success, errno on failure.
1292  */
1293 int drm_mode_getconnector(struct drm_device *dev, void *data,
1294                           struct drm_file *file_priv)
1295 {
1296         struct drm_mode_get_connector *out_resp = data;
1297         struct drm_mode_object *obj;
1298         struct drm_connector *connector;
1299         struct drm_display_mode *mode;
1300         int mode_count = 0;
1301         int props_count = 0;
1302         int encoders_count = 0;
1303         int ret = 0;
1304         int copied = 0;
1305         int i;
1306         struct drm_mode_modeinfo u_mode;
1307         struct drm_mode_modeinfo __user *mode_ptr;
1308         uint32_t __user *prop_ptr;
1309         uint64_t __user *prop_values;
1310         uint32_t __user *encoder_ptr;
1311
1312         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1313
1314         DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1315
1316         mutex_lock(&dev->mode_config.mutex);
1317
1318         obj = drm_mode_object_find(dev, out_resp->connector_id,
1319                                    DRM_MODE_OBJECT_CONNECTOR);
1320         if (!obj) {
1321                 ret = -EINVAL;
1322                 goto out;
1323         }
1324         connector = obj_to_connector(obj);
1325
1326         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1327                 if (connector->property_ids[i] != 0) {
1328                         props_count++;
1329                 }
1330         }
1331
1332         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1333                 if (connector->encoder_ids[i] != 0) {
1334                         encoders_count++;
1335                 }
1336         }
1337
1338         if (out_resp->count_modes == 0) {
1339                 connector->funcs->fill_modes(connector,
1340                                              dev->mode_config.max_width,
1341                                              dev->mode_config.max_height);
1342         }
1343
1344         /* delayed so we get modes regardless of pre-fill_modes state */
1345         list_for_each_entry(mode, &connector->modes, head)
1346                 mode_count++;
1347
1348         out_resp->connector_id = connector->base.id;
1349         out_resp->connector_type = connector->connector_type;
1350         out_resp->connector_type_id = connector->connector_type_id;
1351         out_resp->mm_width = connector->display_info.width_mm;
1352         out_resp->mm_height = connector->display_info.height_mm;
1353         out_resp->subpixel = connector->display_info.subpixel_order;
1354         out_resp->connection = connector->status;
1355         if (connector->encoder)
1356                 out_resp->encoder_id = connector->encoder->base.id;
1357         else
1358                 out_resp->encoder_id = 0;
1359
1360         /*
1361          * This ioctl is called twice, once to determine how much space is
1362          * needed, and the 2nd time to fill it.
1363          */
1364         if ((out_resp->count_modes >= mode_count) && mode_count) {
1365                 copied = 0;
1366                 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1367                 list_for_each_entry(mode, &connector->modes, head) {
1368                         drm_crtc_convert_to_umode(&u_mode, mode);
1369                         if (copy_to_user(mode_ptr + copied,
1370                                          &u_mode, sizeof(u_mode))) {
1371                                 ret = -EFAULT;
1372                                 goto out;
1373                         }
1374                         copied++;
1375                 }
1376         }
1377         out_resp->count_modes = mode_count;
1378
1379         if ((out_resp->count_props >= props_count) && props_count) {
1380                 copied = 0;
1381                 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1382                 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1383                 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1384                         if (connector->property_ids[i] != 0) {
1385                                 if (put_user(connector->property_ids[i],
1386                                              prop_ptr + copied)) {
1387                                         ret = -EFAULT;
1388                                         goto out;
1389                                 }
1390
1391                                 if (put_user(connector->property_values[i],
1392                                              prop_values + copied)) {
1393                                         ret = -EFAULT;
1394                                         goto out;
1395                                 }
1396                                 copied++;
1397                         }
1398                 }
1399         }
1400         out_resp->count_props = props_count;
1401
1402         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1403                 copied = 0;
1404                 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1405                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1406                         if (connector->encoder_ids[i] != 0) {
1407                                 if (put_user(connector->encoder_ids[i],
1408                                              encoder_ptr + copied)) {
1409                                         ret = -EFAULT;
1410                                         goto out;
1411                                 }
1412                                 copied++;
1413                         }
1414                 }
1415         }
1416         out_resp->count_encoders = encoders_count;
1417
1418 out:
1419         mutex_unlock(&dev->mode_config.mutex);
1420         return ret;
1421 }
1422
1423 int drm_mode_getencoder(struct drm_device *dev, void *data,
1424                         struct drm_file *file_priv)
1425 {
1426         struct drm_mode_get_encoder *enc_resp = data;
1427         struct drm_mode_object *obj;
1428         struct drm_encoder *encoder;
1429         int ret = 0;
1430
1431         mutex_lock(&dev->mode_config.mutex);
1432         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1433                                    DRM_MODE_OBJECT_ENCODER);
1434         if (!obj) {
1435                 ret = -EINVAL;
1436                 goto out;
1437         }
1438         encoder = obj_to_encoder(obj);
1439
1440         if (encoder->crtc)
1441                 enc_resp->crtc_id = encoder->crtc->base.id;
1442         else
1443                 enc_resp->crtc_id = 0;
1444         enc_resp->encoder_type = encoder->encoder_type;
1445         enc_resp->encoder_id = encoder->base.id;
1446         enc_resp->possible_crtcs = encoder->possible_crtcs;
1447         enc_resp->possible_clones = encoder->possible_clones;
1448
1449 out:
1450         mutex_unlock(&dev->mode_config.mutex);
1451         return ret;
1452 }
1453
1454 /**
1455  * drm_mode_setcrtc - set CRTC configuration
1456  * @inode: inode from the ioctl
1457  * @filp: file * from the ioctl
1458  * @cmd: cmd from ioctl
1459  * @arg: arg from ioctl
1460  *
1461  * LOCKING:
1462  * Caller? (FIXME)
1463  *
1464  * Build a new CRTC configuration based on user request.
1465  *
1466  * Called by the user via ioctl.
1467  *
1468  * RETURNS:
1469  * Zero on success, errno on failure.
1470  */
1471 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1472                      struct drm_file *file_priv)
1473 {
1474         struct drm_mode_config *config = &dev->mode_config;
1475         struct drm_mode_crtc *crtc_req = data;
1476         struct drm_mode_object *obj;
1477         struct drm_crtc *crtc, *crtcfb;
1478         struct drm_connector **connector_set = NULL, *connector;
1479         struct drm_framebuffer *fb = NULL;
1480         struct drm_display_mode *mode = NULL;
1481         struct drm_mode_set set;
1482         uint32_t __user *set_connectors_ptr;
1483         int ret = 0;
1484         int i;
1485
1486         mutex_lock(&dev->mode_config.mutex);
1487         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1488                                    DRM_MODE_OBJECT_CRTC);
1489         if (!obj) {
1490                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1491                 ret = -EINVAL;
1492                 goto out;
1493         }
1494         crtc = obj_to_crtc(obj);
1495
1496         if (crtc_req->mode_valid) {
1497                 /* If we have a mode we need a framebuffer. */
1498                 /* If we pass -1, set the mode with the currently bound fb */
1499                 if (crtc_req->fb_id == -1) {
1500                         list_for_each_entry(crtcfb,
1501                                             &dev->mode_config.crtc_list, head) {
1502                                 if (crtcfb == crtc) {
1503                                         DRM_DEBUG_KMS("Using current fb for "
1504                                                         "setmode\n");
1505                                         fb = crtc->fb;
1506                                 }
1507                         }
1508                 } else {
1509                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1510                                                    DRM_MODE_OBJECT_FB);
1511                         if (!obj) {
1512                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1513                                                 crtc_req->fb_id);
1514                                 ret = -EINVAL;
1515                                 goto out;
1516                         }
1517                         fb = obj_to_fb(obj);
1518                 }
1519
1520                 mode = drm_mode_create(dev);
1521                 drm_crtc_convert_umode(mode, &crtc_req->mode);
1522                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1523         }
1524
1525         if (crtc_req->count_connectors == 0 && mode) {
1526                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1527                 ret = -EINVAL;
1528                 goto out;
1529         }
1530
1531         if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1532                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1533                           crtc_req->count_connectors);
1534                 ret = -EINVAL;
1535                 goto out;
1536         }
1537
1538         if (crtc_req->count_connectors > 0) {
1539                 u32 out_id;
1540
1541                 /* Avoid unbounded kernel memory allocation */
1542                 if (crtc_req->count_connectors > config->num_connector) {
1543                         ret = -EINVAL;
1544                         goto out;
1545                 }
1546
1547                 connector_set = kmalloc(crtc_req->count_connectors *
1548                                         sizeof(struct drm_connector *),
1549                                         GFP_KERNEL);
1550                 if (!connector_set) {
1551                         ret = -ENOMEM;
1552                         goto out;
1553                 }
1554
1555                 for (i = 0; i < crtc_req->count_connectors; i++) {
1556                         set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1557                         if (get_user(out_id, &set_connectors_ptr[i])) {
1558                                 ret = -EFAULT;
1559                                 goto out;
1560                         }
1561
1562                         obj = drm_mode_object_find(dev, out_id,
1563                                                    DRM_MODE_OBJECT_CONNECTOR);
1564                         if (!obj) {
1565                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
1566                                                 out_id);
1567                                 ret = -EINVAL;
1568                                 goto out;
1569                         }
1570                         connector = obj_to_connector(obj);
1571
1572                         connector_set[i] = connector;
1573                 }
1574         }
1575
1576         set.crtc = crtc;
1577         set.x = crtc_req->x;
1578         set.y = crtc_req->y;
1579         set.mode = mode;
1580         set.connectors = connector_set;
1581         set.num_connectors = crtc_req->count_connectors;
1582         set.fb = fb;
1583         ret = crtc->funcs->set_config(&set);
1584
1585 out:
1586         kfree(connector_set);
1587         mutex_unlock(&dev->mode_config.mutex);
1588         return ret;
1589 }
1590
1591 int drm_mode_cursor_ioctl(struct drm_device *dev,
1592                         void *data, struct drm_file *file_priv)
1593 {
1594         struct drm_mode_cursor *req = data;
1595         struct drm_mode_object *obj;
1596         struct drm_crtc *crtc;
1597         int ret = 0;
1598
1599         if (!req->flags) {
1600                 DRM_ERROR("no operation set\n");
1601                 return -EINVAL;
1602         }
1603
1604         mutex_lock(&dev->mode_config.mutex);
1605         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1606         if (!obj) {
1607                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1608                 ret = -EINVAL;
1609                 goto out;
1610         }
1611         crtc = obj_to_crtc(obj);
1612
1613         if (req->flags & DRM_MODE_CURSOR_BO) {
1614                 if (!crtc->funcs->cursor_set) {
1615                         DRM_ERROR("crtc does not support cursor\n");
1616                         ret = -ENXIO;
1617                         goto out;
1618                 }
1619                 /* Turns off the cursor if handle is 0 */
1620                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1621                                               req->width, req->height);
1622         }
1623
1624         if (req->flags & DRM_MODE_CURSOR_MOVE) {
1625                 if (crtc->funcs->cursor_move) {
1626                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1627                 } else {
1628                         DRM_ERROR("crtc does not support cursor\n");
1629                         ret = -EFAULT;
1630                         goto out;
1631                 }
1632         }
1633 out:
1634         mutex_unlock(&dev->mode_config.mutex);
1635         return ret;
1636 }
1637
1638 /**
1639  * drm_mode_addfb - add an FB to the graphics configuration
1640  * @inode: inode from the ioctl
1641  * @filp: file * from the ioctl
1642  * @cmd: cmd from ioctl
1643  * @arg: arg from ioctl
1644  *
1645  * LOCKING:
1646  * Takes mode config lock.
1647  *
1648  * Add a new FB to the specified CRTC, given a user request.
1649  *
1650  * Called by the user via ioctl.
1651  *
1652  * RETURNS:
1653  * Zero on success, errno on failure.
1654  */
1655 int drm_mode_addfb(struct drm_device *dev,
1656                    void *data, struct drm_file *file_priv)
1657 {
1658         struct drm_mode_fb_cmd *r = data;
1659         struct drm_mode_config *config = &dev->mode_config;
1660         struct drm_framebuffer *fb;
1661         int ret = 0;
1662
1663         if ((config->min_width > r->width) || (r->width > config->max_width)) {
1664                 DRM_ERROR("mode new framebuffer width not within limits\n");
1665                 return -EINVAL;
1666         }
1667         if ((config->min_height > r->height) || (r->height > config->max_height)) {
1668                 DRM_ERROR("mode new framebuffer height not within limits\n");
1669                 return -EINVAL;
1670         }
1671
1672         mutex_lock(&dev->mode_config.mutex);
1673
1674         /* TODO check buffer is sufficently large */
1675         /* TODO setup destructor callback */
1676
1677         fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1678         if (!fb) {
1679                 DRM_ERROR("could not create framebuffer\n");
1680                 ret = -EINVAL;
1681                 goto out;
1682         }
1683
1684         r->fb_id = fb->base.id;
1685         list_add(&fb->filp_head, &file_priv->fbs);
1686
1687 out:
1688         mutex_unlock(&dev->mode_config.mutex);
1689         return ret;
1690 }
1691
1692 /**
1693  * drm_mode_rmfb - remove an FB from the configuration
1694  * @inode: inode from the ioctl
1695  * @filp: file * from the ioctl
1696  * @cmd: cmd from ioctl
1697  * @arg: arg from ioctl
1698  *
1699  * LOCKING:
1700  * Takes mode config lock.
1701  *
1702  * Remove the FB specified by the user.
1703  *
1704  * Called by the user via ioctl.
1705  *
1706  * RETURNS:
1707  * Zero on success, errno on failure.
1708  */
1709 int drm_mode_rmfb(struct drm_device *dev,
1710                    void *data, struct drm_file *file_priv)
1711 {
1712         struct drm_mode_object *obj;
1713         struct drm_framebuffer *fb = NULL;
1714         struct drm_framebuffer *fbl = NULL;
1715         uint32_t *id = data;
1716         int ret = 0;
1717         int found = 0;
1718
1719         mutex_lock(&dev->mode_config.mutex);
1720         obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1721         /* TODO check that we realy get a framebuffer back. */
1722         if (!obj) {
1723                 DRM_ERROR("mode invalid framebuffer id\n");
1724                 ret = -EINVAL;
1725                 goto out;
1726         }
1727         fb = obj_to_fb(obj);
1728
1729         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1730                 if (fb == fbl)
1731                         found = 1;
1732
1733         if (!found) {
1734                 DRM_ERROR("tried to remove a fb that we didn't own\n");
1735                 ret = -EINVAL;
1736                 goto out;
1737         }
1738
1739         /* TODO release all crtc connected to the framebuffer */
1740         /* TODO unhock the destructor from the buffer object */
1741
1742         list_del(&fb->filp_head);
1743         fb->funcs->destroy(fb);
1744
1745 out:
1746         mutex_unlock(&dev->mode_config.mutex);
1747         return ret;
1748 }
1749
1750 /**
1751  * drm_mode_getfb - get FB info
1752  * @inode: inode from the ioctl
1753  * @filp: file * from the ioctl
1754  * @cmd: cmd from ioctl
1755  * @arg: arg from ioctl
1756  *
1757  * LOCKING:
1758  * Caller? (FIXME)
1759  *
1760  * Lookup the FB given its ID and return info about it.
1761  *
1762  * Called by the user via ioctl.
1763  *
1764  * RETURNS:
1765  * Zero on success, errno on failure.
1766  */
1767 int drm_mode_getfb(struct drm_device *dev,
1768                    void *data, struct drm_file *file_priv)
1769 {
1770         struct drm_mode_fb_cmd *r = data;
1771         struct drm_mode_object *obj;
1772         struct drm_framebuffer *fb;
1773         int ret = 0;
1774
1775         mutex_lock(&dev->mode_config.mutex);
1776         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1777         if (!obj) {
1778                 DRM_ERROR("invalid framebuffer id\n");
1779                 ret = -EINVAL;
1780                 goto out;
1781         }
1782         fb = obj_to_fb(obj);
1783
1784         r->height = fb->height;
1785         r->width = fb->width;
1786         r->depth = fb->depth;
1787         r->bpp = fb->bits_per_pixel;
1788         r->pitch = fb->pitch;
1789         fb->funcs->create_handle(fb, file_priv, &r->handle);
1790
1791 out:
1792         mutex_unlock(&dev->mode_config.mutex);
1793         return ret;
1794 }
1795
1796 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1797                            void *data, struct drm_file *file_priv)
1798 {
1799         struct drm_clip_rect __user *clips_ptr;
1800         struct drm_clip_rect *clips = NULL;
1801         struct drm_mode_fb_dirty_cmd *r = data;
1802         struct drm_mode_object *obj;
1803         struct drm_framebuffer *fb;
1804         unsigned flags;
1805         int num_clips;
1806         int ret = 0;
1807
1808         mutex_lock(&dev->mode_config.mutex);
1809         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1810         if (!obj) {
1811                 DRM_ERROR("invalid framebuffer id\n");
1812                 ret = -EINVAL;
1813                 goto out_err1;
1814         }
1815         fb = obj_to_fb(obj);
1816
1817         num_clips = r->num_clips;
1818         clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1819
1820         if (!num_clips != !clips_ptr) {
1821                 ret = -EINVAL;
1822                 goto out_err1;
1823         }
1824
1825         flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1826
1827         /* If userspace annotates copy, clips must come in pairs */
1828         if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1829                 ret = -EINVAL;
1830                 goto out_err1;
1831         }
1832
1833         if (num_clips && clips_ptr) {
1834                 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1835                 if (!clips) {
1836                         ret = -ENOMEM;
1837                         goto out_err1;
1838                 }
1839
1840                 ret = copy_from_user(clips, clips_ptr,
1841                                      num_clips * sizeof(*clips));
1842                 if (ret)
1843                         goto out_err2;
1844         }
1845
1846         if (fb->funcs->dirty) {
1847                 ret = fb->funcs->dirty(fb, flags, r->color, clips, num_clips);
1848         } else {
1849                 ret = -ENOSYS;
1850                 goto out_err2;
1851         }
1852
1853 out_err2:
1854         kfree(clips);
1855 out_err1:
1856         mutex_unlock(&dev->mode_config.mutex);
1857         return ret;
1858 }
1859
1860
1861 /**
1862  * drm_fb_release - remove and free the FBs on this file
1863  * @filp: file * from the ioctl
1864  *
1865  * LOCKING:
1866  * Takes mode config lock.
1867  *
1868  * Destroy all the FBs associated with @filp.
1869  *
1870  * Called by the user via ioctl.
1871  *
1872  * RETURNS:
1873  * Zero on success, errno on failure.
1874  */
1875 void drm_fb_release(struct drm_file *priv)
1876 {
1877         struct drm_device *dev = priv->minor->dev;
1878         struct drm_framebuffer *fb, *tfb;
1879
1880         mutex_lock(&dev->mode_config.mutex);
1881         list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1882                 list_del(&fb->filp_head);
1883                 fb->funcs->destroy(fb);
1884         }
1885         mutex_unlock(&dev->mode_config.mutex);
1886 }
1887
1888 /**
1889  * drm_mode_attachmode - add a mode to the user mode list
1890  * @dev: DRM device
1891  * @connector: connector to add the mode to
1892  * @mode: mode to add
1893  *
1894  * Add @mode to @connector's user mode list.
1895  */
1896 static int drm_mode_attachmode(struct drm_device *dev,
1897                                struct drm_connector *connector,
1898                                struct drm_display_mode *mode)
1899 {
1900         int ret = 0;
1901
1902         list_add_tail(&mode->head, &connector->user_modes);
1903         return ret;
1904 }
1905
1906 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1907                              struct drm_display_mode *mode)
1908 {
1909         struct drm_connector *connector;
1910         int ret = 0;
1911         struct drm_display_mode *dup_mode;
1912         int need_dup = 0;
1913         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1914                 if (!connector->encoder)
1915                         break;
1916                 if (connector->encoder->crtc == crtc) {
1917                         if (need_dup)
1918                                 dup_mode = drm_mode_duplicate(dev, mode);
1919                         else
1920                                 dup_mode = mode;
1921                         ret = drm_mode_attachmode(dev, connector, dup_mode);
1922                         if (ret)
1923                                 return ret;
1924                         need_dup = 1;
1925                 }
1926         }
1927         return 0;
1928 }
1929 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1930
1931 static int drm_mode_detachmode(struct drm_device *dev,
1932                                struct drm_connector *connector,
1933                                struct drm_display_mode *mode)
1934 {
1935         int found = 0;
1936         int ret = 0;
1937         struct drm_display_mode *match_mode, *t;
1938
1939         list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1940                 if (drm_mode_equal(match_mode, mode)) {
1941                         list_del(&match_mode->head);
1942                         drm_mode_destroy(dev, match_mode);
1943                         found = 1;
1944                         break;
1945                 }
1946         }
1947
1948         if (!found)
1949                 ret = -EINVAL;
1950
1951         return ret;
1952 }
1953
1954 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1955 {
1956         struct drm_connector *connector;
1957
1958         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1959                 drm_mode_detachmode(dev, connector, mode);
1960         }
1961         return 0;
1962 }
1963 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1964
1965 /**
1966  * drm_fb_attachmode - Attach a user mode to an connector
1967  * @inode: inode from the ioctl
1968  * @filp: file * from the ioctl
1969  * @cmd: cmd from ioctl
1970  * @arg: arg from ioctl
1971  *
1972  * This attaches a user specified mode to an connector.
1973  * Called by the user via ioctl.
1974  *
1975  * RETURNS:
1976  * Zero on success, errno on failure.
1977  */
1978 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1979                               void *data, struct drm_file *file_priv)
1980 {
1981         struct drm_mode_mode_cmd *mode_cmd = data;
1982         struct drm_connector *connector;
1983         struct drm_display_mode *mode;
1984         struct drm_mode_object *obj;
1985         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1986         int ret = 0;
1987
1988         mutex_lock(&dev->mode_config.mutex);
1989
1990         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1991         if (!obj) {
1992                 ret = -EINVAL;
1993                 goto out;
1994         }
1995         connector = obj_to_connector(obj);
1996
1997         mode = drm_mode_create(dev);
1998         if (!mode) {
1999                 ret = -ENOMEM;
2000                 goto out;
2001         }
2002
2003         drm_crtc_convert_umode(mode, umode);
2004
2005         ret = drm_mode_attachmode(dev, connector, mode);
2006 out:
2007         mutex_unlock(&dev->mode_config.mutex);
2008         return ret;
2009 }
2010
2011
2012 /**
2013  * drm_fb_detachmode - Detach a user specified mode from an connector
2014  * @inode: inode from the ioctl
2015  * @filp: file * from the ioctl
2016  * @cmd: cmd from ioctl
2017  * @arg: arg from ioctl
2018  *
2019  * Called by the user via ioctl.
2020  *
2021  * RETURNS:
2022  * Zero on success, errno on failure.
2023  */
2024 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2025                               void *data, struct drm_file *file_priv)
2026 {
2027         struct drm_mode_object *obj;
2028         struct drm_mode_mode_cmd *mode_cmd = data;
2029         struct drm_connector *connector;
2030         struct drm_display_mode mode;
2031         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2032         int ret = 0;
2033
2034         mutex_lock(&dev->mode_config.mutex);
2035
2036         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2037         if (!obj) {
2038                 ret = -EINVAL;
2039                 goto out;
2040         }
2041         connector = obj_to_connector(obj);
2042
2043         drm_crtc_convert_umode(&mode, umode);
2044         ret = drm_mode_detachmode(dev, connector, &mode);
2045 out:
2046         mutex_unlock(&dev->mode_config.mutex);
2047         return ret;
2048 }
2049
2050 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2051                                          const char *name, int num_values)
2052 {
2053         struct drm_property *property = NULL;
2054
2055         property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2056         if (!property)
2057                 return NULL;
2058
2059         if (num_values) {
2060                 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2061                 if (!property->values)
2062                         goto fail;
2063         }
2064
2065         drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2066         property->flags = flags;
2067         property->num_values = num_values;
2068         INIT_LIST_HEAD(&property->enum_blob_list);
2069
2070         if (name)
2071                 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2072
2073         list_add_tail(&property->head, &dev->mode_config.property_list);
2074         return property;
2075 fail:
2076         kfree(property);
2077         return NULL;
2078 }
2079 EXPORT_SYMBOL(drm_property_create);
2080
2081 int drm_property_add_enum(struct drm_property *property, int index,
2082                           uint64_t value, const char *name)
2083 {
2084         struct drm_property_enum *prop_enum;
2085
2086         if (!(property->flags & DRM_MODE_PROP_ENUM))
2087                 return -EINVAL;
2088
2089         if (!list_empty(&property->enum_blob_list)) {
2090                 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2091                         if (prop_enum->value == value) {
2092                                 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2093                                 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2094                                 return 0;
2095                         }
2096                 }
2097         }
2098
2099         prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2100         if (!prop_enum)
2101                 return -ENOMEM;
2102
2103         strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2104         prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2105         prop_enum->value = value;
2106
2107         property->values[index] = value;
2108         list_add_tail(&prop_enum->head, &property->enum_blob_list);
2109         return 0;
2110 }
2111 EXPORT_SYMBOL(drm_property_add_enum);
2112
2113 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2114 {
2115         struct drm_property_enum *prop_enum, *pt;
2116
2117         list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2118                 list_del(&prop_enum->head);
2119                 kfree(prop_enum);
2120         }
2121
2122         if (property->num_values)
2123                 kfree(property->values);
2124         drm_mode_object_put(dev, &property->base);
2125         list_del(&property->head);
2126         kfree(property);
2127 }
2128 EXPORT_SYMBOL(drm_property_destroy);
2129
2130 int drm_connector_attach_property(struct drm_connector *connector,
2131                                struct drm_property *property, uint64_t init_val)
2132 {
2133         int i;
2134
2135         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2136                 if (connector->property_ids[i] == 0) {
2137                         connector->property_ids[i] = property->base.id;
2138                         connector->property_values[i] = init_val;
2139                         break;
2140                 }
2141         }
2142
2143         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2144                 return -EINVAL;
2145         return 0;
2146 }
2147 EXPORT_SYMBOL(drm_connector_attach_property);
2148
2149 int drm_connector_property_set_value(struct drm_connector *connector,
2150                                   struct drm_property *property, uint64_t value)
2151 {
2152         int i;
2153
2154         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2155                 if (connector->property_ids[i] == property->base.id) {
2156                         connector->property_values[i] = value;
2157                         break;
2158                 }
2159         }
2160
2161         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2162                 return -EINVAL;
2163         return 0;
2164 }
2165 EXPORT_SYMBOL(drm_connector_property_set_value);
2166
2167 int drm_connector_property_get_value(struct drm_connector *connector,
2168                                   struct drm_property *property, uint64_t *val)
2169 {
2170         int i;
2171
2172         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2173                 if (connector->property_ids[i] == property->base.id) {
2174                         *val = connector->property_values[i];
2175                         break;
2176                 }
2177         }
2178
2179         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2180                 return -EINVAL;
2181         return 0;
2182 }
2183 EXPORT_SYMBOL(drm_connector_property_get_value);
2184
2185 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2186                                void *data, struct drm_file *file_priv)
2187 {
2188         struct drm_mode_object *obj;
2189         struct drm_mode_get_property *out_resp = data;
2190         struct drm_property *property;
2191         int enum_count = 0;
2192         int blob_count = 0;
2193         int value_count = 0;
2194         int ret = 0, i;
2195         int copied;
2196         struct drm_property_enum *prop_enum;
2197         struct drm_mode_property_enum __user *enum_ptr;
2198         struct drm_property_blob *prop_blob;
2199         uint32_t *blob_id_ptr;
2200         uint64_t __user *values_ptr;
2201         uint32_t __user *blob_length_ptr;
2202
2203         mutex_lock(&dev->mode_config.mutex);
2204         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2205         if (!obj) {
2206                 ret = -EINVAL;
2207                 goto done;
2208         }
2209         property = obj_to_property(obj);
2210
2211         if (property->flags & DRM_MODE_PROP_ENUM) {
2212                 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2213                         enum_count++;
2214         } else if (property->flags & DRM_MODE_PROP_BLOB) {
2215                 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2216                         blob_count++;
2217         }
2218
2219         value_count = property->num_values;
2220
2221         strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2222         out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2223         out_resp->flags = property->flags;
2224
2225         if ((out_resp->count_values >= value_count) && value_count) {
2226                 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2227                 for (i = 0; i < value_count; i++) {
2228                         if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2229                                 ret = -EFAULT;
2230                                 goto done;
2231                         }
2232                 }
2233         }
2234         out_resp->count_values = value_count;
2235
2236         if (property->flags & DRM_MODE_PROP_ENUM) {
2237                 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2238                         copied = 0;
2239                         enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2240                         list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2241
2242                                 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2243                                         ret = -EFAULT;
2244                                         goto done;
2245                                 }
2246
2247                                 if (copy_to_user(&enum_ptr[copied].name,
2248                                                  &prop_enum->name, DRM_PROP_NAME_LEN)) {
2249                                         ret = -EFAULT;
2250                                         goto done;
2251                                 }
2252                                 copied++;
2253                         }
2254                 }
2255                 out_resp->count_enum_blobs = enum_count;
2256         }
2257
2258         if (property->flags & DRM_MODE_PROP_BLOB) {
2259                 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2260                         copied = 0;
2261                         blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2262                         blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2263
2264                         list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2265                                 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2266                                         ret = -EFAULT;
2267                                         goto done;
2268                                 }
2269
2270                                 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2271                                         ret = -EFAULT;
2272                                         goto done;
2273                                 }
2274
2275                                 copied++;
2276                         }
2277                 }
2278                 out_resp->count_enum_blobs = blob_count;
2279         }
2280 done:
2281         mutex_unlock(&dev->mode_config.mutex);
2282         return ret;
2283 }
2284
2285 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2286                                                           void *data)
2287 {
2288         struct drm_property_blob *blob;
2289
2290         if (!length || !data)
2291                 return NULL;
2292
2293         blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2294         if (!blob)
2295                 return NULL;
2296
2297         blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2298         blob->length = length;
2299
2300         memcpy(blob->data, data, length);
2301
2302         drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2303
2304         list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2305         return blob;
2306 }
2307
2308 static void drm_property_destroy_blob(struct drm_device *dev,
2309                                struct drm_property_blob *blob)
2310 {
2311         drm_mode_object_put(dev, &blob->base);
2312         list_del(&blob->head);
2313         kfree(blob);
2314 }
2315
2316 int drm_mode_getblob_ioctl(struct drm_device *dev,
2317                            void *data, struct drm_file *file_priv)
2318 {
2319         struct drm_mode_object *obj;
2320         struct drm_mode_get_blob *out_resp = data;
2321         struct drm_property_blob *blob;
2322         int ret = 0;
2323         void *blob_ptr;
2324
2325         mutex_lock(&dev->mode_config.mutex);
2326         obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2327         if (!obj) {
2328                 ret = -EINVAL;
2329                 goto done;
2330         }
2331         blob = obj_to_blob(obj);
2332
2333         if (out_resp->length == blob->length) {
2334                 blob_ptr = (void *)(unsigned long)out_resp->data;
2335                 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2336                         ret = -EFAULT;
2337                         goto done;
2338                 }
2339         }
2340         out_resp->length = blob->length;
2341
2342 done:
2343         mutex_unlock(&dev->mode_config.mutex);
2344         return ret;
2345 }
2346
2347 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2348                                             struct edid *edid)
2349 {
2350         struct drm_device *dev = connector->dev;
2351         int ret = 0;
2352
2353         if (connector->edid_blob_ptr)
2354                 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2355
2356         /* Delete edid, when there is none. */
2357         if (!edid) {
2358                 connector->edid_blob_ptr = NULL;
2359                 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2360                 return ret;
2361         }
2362
2363         connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
2364
2365         ret = drm_connector_property_set_value(connector,
2366                                                dev->mode_config.edid_property,
2367                                                connector->edid_blob_ptr->base.id);
2368
2369         return ret;
2370 }
2371 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2372
2373 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2374                                        void *data, struct drm_file *file_priv)
2375 {
2376         struct drm_mode_connector_set_property *out_resp = data;
2377         struct drm_mode_object *obj;
2378         struct drm_property *property;
2379         struct drm_connector *connector;
2380         int ret = -EINVAL;
2381         int i;
2382
2383         mutex_lock(&dev->mode_config.mutex);
2384
2385         obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2386         if (!obj) {
2387                 goto out;
2388         }
2389         connector = obj_to_connector(obj);
2390
2391         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2392                 if (connector->property_ids[i] == out_resp->prop_id)
2393                         break;
2394         }
2395
2396         if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2397                 goto out;
2398         }
2399
2400         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2401         if (!obj) {
2402                 goto out;
2403         }
2404         property = obj_to_property(obj);
2405
2406         if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2407                 goto out;
2408
2409         if (property->flags & DRM_MODE_PROP_RANGE) {
2410                 if (out_resp->value < property->values[0])
2411                         goto out;
2412
2413                 if (out_resp->value > property->values[1])
2414                         goto out;
2415         } else {
2416                 int found = 0;
2417                 for (i = 0; i < property->num_values; i++) {
2418                         if (property->values[i] == out_resp->value) {
2419                                 found = 1;
2420                                 break;
2421                         }
2422                 }
2423                 if (!found) {
2424                         goto out;
2425                 }
2426         }
2427
2428         /* Do DPMS ourselves */
2429         if (property == connector->dev->mode_config.dpms_property) {
2430                 if (connector->funcs->dpms)
2431                         (*connector->funcs->dpms)(connector, (int) out_resp->value);
2432                 ret = 0;
2433         } else if (connector->funcs->set_property)
2434                 ret = connector->funcs->set_property(connector, property, out_resp->value);
2435
2436         /* store the property value if successful */
2437         if (!ret)
2438                 drm_connector_property_set_value(connector, property, out_resp->value);
2439 out:
2440         mutex_unlock(&dev->mode_config.mutex);
2441         return ret;
2442 }
2443
2444 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2445                                       struct drm_encoder *encoder)
2446 {
2447         int i;
2448
2449         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2450                 if (connector->encoder_ids[i] == 0) {
2451                         connector->encoder_ids[i] = encoder->base.id;
2452                         return 0;
2453                 }
2454         }
2455         return -ENOMEM;
2456 }
2457 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2458
2459 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2460                                     struct drm_encoder *encoder)
2461 {
2462         int i;
2463         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2464                 if (connector->encoder_ids[i] == encoder->base.id) {
2465                         connector->encoder_ids[i] = 0;
2466                         if (connector->encoder == encoder)
2467                                 connector->encoder = NULL;
2468                         break;
2469                 }
2470         }
2471 }
2472 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2473
2474 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2475                                   int gamma_size)
2476 {
2477         crtc->gamma_size = gamma_size;
2478
2479         crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2480         if (!crtc->gamma_store) {
2481                 crtc->gamma_size = 0;
2482                 return false;
2483         }
2484
2485         return true;
2486 }
2487 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2488
2489 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2490                              void *data, struct drm_file *file_priv)
2491 {
2492         struct drm_mode_crtc_lut *crtc_lut = data;
2493         struct drm_mode_object *obj;
2494         struct drm_crtc *crtc;
2495         void *r_base, *g_base, *b_base;
2496         int size;
2497         int ret = 0;
2498
2499         mutex_lock(&dev->mode_config.mutex);
2500         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2501         if (!obj) {
2502                 ret = -EINVAL;
2503                 goto out;
2504         }
2505         crtc = obj_to_crtc(obj);
2506
2507         /* memcpy into gamma store */
2508         if (crtc_lut->gamma_size != crtc->gamma_size) {
2509                 ret = -EINVAL;
2510                 goto out;
2511         }
2512
2513         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2514         r_base = crtc->gamma_store;
2515         if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2516                 ret = -EFAULT;
2517                 goto out;
2518         }
2519
2520         g_base = r_base + size;
2521         if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2522                 ret = -EFAULT;
2523                 goto out;
2524         }
2525
2526         b_base = g_base + size;
2527         if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2528                 ret = -EFAULT;
2529                 goto out;
2530         }
2531
2532         crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
2533
2534 out:
2535         mutex_unlock(&dev->mode_config.mutex);
2536         return ret;
2537
2538 }
2539
2540 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2541                              void *data, struct drm_file *file_priv)
2542 {
2543         struct drm_mode_crtc_lut *crtc_lut = data;
2544         struct drm_mode_object *obj;
2545         struct drm_crtc *crtc;
2546         void *r_base, *g_base, *b_base;
2547         int size;
2548         int ret = 0;
2549
2550         mutex_lock(&dev->mode_config.mutex);
2551         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2552         if (!obj) {
2553                 ret = -EINVAL;
2554                 goto out;
2555         }
2556         crtc = obj_to_crtc(obj);
2557
2558         /* memcpy into gamma store */
2559         if (crtc_lut->gamma_size != crtc->gamma_size) {
2560                 ret = -EINVAL;
2561                 goto out;
2562         }
2563
2564         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2565         r_base = crtc->gamma_store;
2566         if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2567                 ret = -EFAULT;
2568                 goto out;
2569         }
2570
2571         g_base = r_base + size;
2572         if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2573                 ret = -EFAULT;
2574                 goto out;
2575         }
2576
2577         b_base = g_base + size;
2578         if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2579                 ret = -EFAULT;
2580                 goto out;
2581         }
2582 out:
2583         mutex_unlock(&dev->mode_config.mutex);
2584         return ret;
2585 }
2586
2587 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2588                              void *data, struct drm_file *file_priv)
2589 {
2590         struct drm_mode_crtc_page_flip *page_flip = data;
2591         struct drm_mode_object *obj;
2592         struct drm_crtc *crtc;
2593         struct drm_framebuffer *fb;
2594         struct drm_pending_vblank_event *e = NULL;
2595         unsigned long flags;
2596         int ret = -EINVAL;
2597
2598         if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2599             page_flip->reserved != 0)
2600                 return -EINVAL;
2601
2602         mutex_lock(&dev->mode_config.mutex);
2603         obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2604         if (!obj)
2605                 goto out;
2606         crtc = obj_to_crtc(obj);
2607
2608         if (crtc->funcs->page_flip == NULL)
2609                 goto out;
2610
2611         obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2612         if (!obj)
2613                 goto out;
2614         fb = obj_to_fb(obj);
2615
2616         if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2617                 ret = -ENOMEM;
2618                 spin_lock_irqsave(&dev->event_lock, flags);
2619                 if (file_priv->event_space < sizeof e->event) {
2620                         spin_unlock_irqrestore(&dev->event_lock, flags);
2621                         goto out;
2622                 }
2623                 file_priv->event_space -= sizeof e->event;
2624                 spin_unlock_irqrestore(&dev->event_lock, flags);
2625
2626                 e = kzalloc(sizeof *e, GFP_KERNEL);
2627                 if (e == NULL) {
2628                         spin_lock_irqsave(&dev->event_lock, flags);
2629                         file_priv->event_space += sizeof e->event;
2630                         spin_unlock_irqrestore(&dev->event_lock, flags);
2631                         goto out;
2632                 }
2633
2634                 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2635                 e->event.base.length = sizeof e->event;
2636                 e->event.user_data = page_flip->user_data;
2637                 e->base.event = &e->event.base;
2638                 e->base.file_priv = file_priv;
2639                 e->base.destroy =
2640                         (void (*) (struct drm_pending_event *)) kfree;
2641         }
2642
2643         ret = crtc->funcs->page_flip(crtc, fb, e);
2644         if (ret) {
2645                 spin_lock_irqsave(&dev->event_lock, flags);
2646                 file_priv->event_space += sizeof e->event;
2647                 spin_unlock_irqrestore(&dev->event_lock, flags);
2648                 kfree(e);
2649         }
2650
2651 out:
2652         mutex_unlock(&dev->mode_config.mutex);
2653         return ret;
2654 }