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include: replace linux/module.h with "struct module" wherever possible
[linux-2.6/next.git] / drivers / gpu / drm / drm_crtc.c
blob82db1850666253dc021f8a43e635fe91ebce94df
1 /*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include "drm.h"
35 #include "drmP.h"
36 #include "drm_crtc.h"
37 #include "drm_edid.h"
38
39 struct drm_prop_enum_list {
40 int type;
41 char *name;
42 };
43
44 /* Avoid boilerplate. I'm tired of typing. */
45 #define DRM_ENUM_NAME_FN(fnname, list) \
46 char *fnname(int val) \
47 { \
48 int i; \
49 for (i = 0; i < ARRAY_SIZE(list); i++) { \
50 if (list[i].type == val) \
51 return list[i].name; \
52 } \
53 return "(unknown)"; \
54 }
55
56 /*
57 * Global properties
58 */
59 static struct drm_prop_enum_list drm_dpms_enum_list[] =
60 { { DRM_MODE_DPMS_ON, "On" },
61 { DRM_MODE_DPMS_STANDBY, "Standby" },
62 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
63 { DRM_MODE_DPMS_OFF, "Off" }
64 };
65
66 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
67
68 /*
69 * Optional properties
70 */
71 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
72 {
73 { DRM_MODE_SCALE_NONE, "None" },
74 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
75 { DRM_MODE_SCALE_CENTER, "Center" },
76 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
77 };
78
79 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
80 {
81 { DRM_MODE_DITHERING_OFF, "Off" },
82 { DRM_MODE_DITHERING_ON, "On" },
83 { DRM_MODE_DITHERING_AUTO, "Automatic" },
84 };
85
86 /*
87 * Non-global properties, but "required" for certain connectors.
88 */
89 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
90 {
91 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
92 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
93 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
94 };
95
96 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
97
98 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
99 {
100 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
101 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
102 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
103 };
104
105 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
106 drm_dvi_i_subconnector_enum_list)
107
108 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
109 {
110 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
111 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
112 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
113 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
114 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
115 };
116
117 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
118
119 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
120 {
121 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
126 };
127
128 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
129 drm_tv_subconnector_enum_list)
130
131 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
132 { DRM_MODE_DIRTY_OFF, "Off" },
133 { DRM_MODE_DIRTY_ON, "On" },
134 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
135 };
136
137 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
138 drm_dirty_info_enum_list)
139
140 struct drm_conn_prop_enum_list {
141 int type;
142 char *name;
143 int count;
144 };
145
146 /*
147 * Connector and encoder types.
148 */
149 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
150 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
151 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
152 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
153 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
154 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
155 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
156 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
157 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
158 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
159 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
160 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
161 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
162 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
163 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
164 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
165 };
166
167 static struct drm_prop_enum_list drm_encoder_enum_list[] =
168 { { DRM_MODE_ENCODER_NONE, "None" },
169 { DRM_MODE_ENCODER_DAC, "DAC" },
170 { DRM_MODE_ENCODER_TMDS, "TMDS" },
171 { DRM_MODE_ENCODER_LVDS, "LVDS" },
172 { DRM_MODE_ENCODER_TVDAC, "TV" },
173 };
174
175 char *drm_get_encoder_name(struct drm_encoder *encoder)
176 {
177 static char buf[32];
178
179 snprintf(buf, 32, "%s-%d",
180 drm_encoder_enum_list[encoder->encoder_type].name,
181 encoder->base.id);
182 return buf;
183 }
184 EXPORT_SYMBOL(drm_get_encoder_name);
185
186 char *drm_get_connector_name(struct drm_connector *connector)
187 {
188 static char buf[32];
189
190 snprintf(buf, 32, "%s-%d",
191 drm_connector_enum_list[connector->connector_type].name,
192 connector->connector_type_id);
193 return buf;
194 }
195 EXPORT_SYMBOL(drm_get_connector_name);
196
197 char *drm_get_connector_status_name(enum drm_connector_status status)
198 {
199 if (status == connector_status_connected)
200 return "connected";
201 else if (status == connector_status_disconnected)
202 return "disconnected";
203 else
204 return "unknown";
205 }
206
207 /**
208 * drm_mode_object_get - allocate a new identifier
209 * @dev: DRM device
210 * @ptr: object pointer, used to generate unique ID
211 * @type: object type
212 *
213 * LOCKING:
214 *
215 * Create a unique identifier based on @ptr in @dev's identifier space. Used
216 * for tracking modes, CRTCs and connectors.
217 *
218 * RETURNS:
219 * New unique (relative to other objects in @dev) integer identifier for the
220 * object.
221 */
222 static int drm_mode_object_get(struct drm_device *dev,
223 struct drm_mode_object *obj, uint32_t obj_type)
224 {
225 int new_id = 0;
226 int ret;
227
228 again:
229 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
230 DRM_ERROR("Ran out memory getting a mode number\n");
231 return -EINVAL;
232 }
233
234 mutex_lock(&dev->mode_config.idr_mutex);
235 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
236 mutex_unlock(&dev->mode_config.idr_mutex);
237 if (ret == -EAGAIN)
238 goto again;
239
240 obj->id = new_id;
241 obj->type = obj_type;
242 return 0;
243 }
244
245 /**
246 * drm_mode_object_put - free an identifer
247 * @dev: DRM device
248 * @id: ID to free
249 *
250 * LOCKING:
251 * Caller must hold DRM mode_config lock.
252 *
253 * Free @id from @dev's unique identifier pool.
254 */
255 static void drm_mode_object_put(struct drm_device *dev,
256 struct drm_mode_object *object)
257 {
258 mutex_lock(&dev->mode_config.idr_mutex);
259 idr_remove(&dev->mode_config.crtc_idr, object->id);
260 mutex_unlock(&dev->mode_config.idr_mutex);
261 }
262
263 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
264 uint32_t id, uint32_t type)
265 {
266 struct drm_mode_object *obj = NULL;
267
268 mutex_lock(&dev->mode_config.idr_mutex);
269 obj = idr_find(&dev->mode_config.crtc_idr, id);
270 if (!obj || (obj->type != type) || (obj->id != id))
271 obj = NULL;
272 mutex_unlock(&dev->mode_config.idr_mutex);
273
274 return obj;
275 }
276 EXPORT_SYMBOL(drm_mode_object_find);
277
278 /**
279 * drm_framebuffer_init - initialize a framebuffer
280 * @dev: DRM device
281 *
282 * LOCKING:
283 * Caller must hold mode config lock.
284 *
285 * Allocates an ID for the framebuffer's parent mode object, sets its mode
286 * functions & device file and adds it to the master fd list.
287 *
288 * RETURNS:
289 * Zero on success, error code on failure.
290 */
291 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
292 const struct drm_framebuffer_funcs *funcs)
293 {
294 int ret;
295
296 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
297 if (ret) {
298 return ret;
299 }
300
301 fb->dev = dev;
302 fb->funcs = funcs;
303 dev->mode_config.num_fb++;
304 list_add(&fb->head, &dev->mode_config.fb_list);
305
306 return 0;
307 }
308 EXPORT_SYMBOL(drm_framebuffer_init);
309
310 /**
311 * drm_framebuffer_cleanup - remove a framebuffer object
312 * @fb: framebuffer to remove
313 *
314 * LOCKING:
315 * Caller must hold mode config lock.
316 *
317 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
318 * it, setting it to NULL.
319 */
320 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
321 {
322 struct drm_device *dev = fb->dev;
323 struct drm_crtc *crtc;
324 struct drm_mode_set set;
325 int ret;
326
327 /* remove from any CRTC */
328 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
329 if (crtc->fb == fb) {
330 /* should turn off the crtc */
331 memset(&set, 0, sizeof(struct drm_mode_set));
332 set.crtc = crtc;
333 set.fb = NULL;
334 ret = crtc->funcs->set_config(&set);
335 if (ret)
336 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
337 }
338 }
339
340 drm_mode_object_put(dev, &fb->base);
341 list_del(&fb->head);
342 dev->mode_config.num_fb--;
343 }
344 EXPORT_SYMBOL(drm_framebuffer_cleanup);
345
346 /**
347 * drm_crtc_init - Initialise a new CRTC object
348 * @dev: DRM device
349 * @crtc: CRTC object to init
350 * @funcs: callbacks for the new CRTC
351 *
352 * LOCKING:
353 * Caller must hold mode config lock.
354 *
355 * Inits a new object created as base part of an driver crtc object.
356 */
357 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
358 const struct drm_crtc_funcs *funcs)
359 {
360 crtc->dev = dev;
361 crtc->funcs = funcs;
362
363 mutex_lock(&dev->mode_config.mutex);
364 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
365
366 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
367 dev->mode_config.num_crtc++;
368 mutex_unlock(&dev->mode_config.mutex);
369 }
370 EXPORT_SYMBOL(drm_crtc_init);
371
372 /**
373 * drm_crtc_cleanup - Cleans up the core crtc usage.
374 * @crtc: CRTC to cleanup
375 *
376 * LOCKING:
377 * Caller must hold mode config lock.
378 *
379 * Cleanup @crtc. Removes from drm modesetting space
380 * does NOT free object, caller does that.
381 */
382 void drm_crtc_cleanup(struct drm_crtc *crtc)
383 {
384 struct drm_device *dev = crtc->dev;
385
386 if (crtc->gamma_store) {
387 kfree(crtc->gamma_store);
388 crtc->gamma_store = NULL;
389 }
390
391 drm_mode_object_put(dev, &crtc->base);
392 list_del(&crtc->head);
393 dev->mode_config.num_crtc--;
394 }
395 EXPORT_SYMBOL(drm_crtc_cleanup);
396
397 /**
398 * drm_mode_probed_add - add a mode to a connector's probed mode list
399 * @connector: connector the new mode
400 * @mode: mode data
401 *
402 * LOCKING:
403 * Caller must hold mode config lock.
404 *
405 * Add @mode to @connector's mode list for later use.
406 */
407 void drm_mode_probed_add(struct drm_connector *connector,
408 struct drm_display_mode *mode)
409 {
410 list_add(&mode->head, &connector->probed_modes);
411 }
412 EXPORT_SYMBOL(drm_mode_probed_add);
413
414 /**
415 * drm_mode_remove - remove and free a mode
416 * @connector: connector list to modify
417 * @mode: mode to remove
418 *
419 * LOCKING:
420 * Caller must hold mode config lock.
421 *
422 * Remove @mode from @connector's mode list, then free it.
423 */
424 void drm_mode_remove(struct drm_connector *connector,
425 struct drm_display_mode *mode)
426 {
427 list_del(&mode->head);
428 kfree(mode);
429 }
430 EXPORT_SYMBOL(drm_mode_remove);
431
432 /**
433 * drm_connector_init - Init a preallocated connector
434 * @dev: DRM device
435 * @connector: the connector to init
436 * @funcs: callbacks for this connector
437 * @name: user visible name of the connector
438 *
439 * LOCKING:
440 * Caller must hold @dev's mode_config lock.
441 *
442 * Initialises a preallocated connector. Connectors should be
443 * subclassed as part of driver connector objects.
444 */
445 void drm_connector_init(struct drm_device *dev,
446 struct drm_connector *connector,
447 const struct drm_connector_funcs *funcs,
448 int connector_type)
449 {
450 mutex_lock(&dev->mode_config.mutex);
451
452 connector->dev = dev;
453 connector->funcs = funcs;
454 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
455 connector->connector_type = connector_type;
456 connector->connector_type_id =
457 ++drm_connector_enum_list[connector_type].count; /* TODO */
458 INIT_LIST_HEAD(&connector->user_modes);
459 INIT_LIST_HEAD(&connector->probed_modes);
460 INIT_LIST_HEAD(&connector->modes);
461 connector->edid_blob_ptr = NULL;
462
463 list_add_tail(&connector->head, &dev->mode_config.connector_list);
464 dev->mode_config.num_connector++;
465
466 drm_connector_attach_property(connector,
467 dev->mode_config.edid_property, 0);
468
469 drm_connector_attach_property(connector,
470 dev->mode_config.dpms_property, 0);
471
472 mutex_unlock(&dev->mode_config.mutex);
473 }
474 EXPORT_SYMBOL(drm_connector_init);
475
476 /**
477 * drm_connector_cleanup - cleans up an initialised connector
478 * @connector: connector to cleanup
479 *
480 * LOCKING:
481 * Caller must hold @dev's mode_config lock.
482 *
483 * Cleans up the connector but doesn't free the object.
484 */
485 void drm_connector_cleanup(struct drm_connector *connector)
486 {
487 struct drm_device *dev = connector->dev;
488 struct drm_display_mode *mode, *t;
489
490 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
491 drm_mode_remove(connector, mode);
492
493 list_for_each_entry_safe(mode, t, &connector->modes, head)
494 drm_mode_remove(connector, mode);
495
496 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
497 drm_mode_remove(connector, mode);
498
499 mutex_lock(&dev->mode_config.mutex);
500 drm_mode_object_put(dev, &connector->base);
501 list_del(&connector->head);
502 mutex_unlock(&dev->mode_config.mutex);
503 }
504 EXPORT_SYMBOL(drm_connector_cleanup);
505
506 void drm_encoder_init(struct drm_device *dev,
507 struct drm_encoder *encoder,
508 const struct drm_encoder_funcs *funcs,
509 int encoder_type)
510 {
511 mutex_lock(&dev->mode_config.mutex);
512
513 encoder->dev = dev;
514
515 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
516 encoder->encoder_type = encoder_type;
517 encoder->funcs = funcs;
518
519 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
520 dev->mode_config.num_encoder++;
521
522 mutex_unlock(&dev->mode_config.mutex);
523 }
524 EXPORT_SYMBOL(drm_encoder_init);
525
526 void drm_encoder_cleanup(struct drm_encoder *encoder)
527 {
528 struct drm_device *dev = encoder->dev;
529 mutex_lock(&dev->mode_config.mutex);
530 drm_mode_object_put(dev, &encoder->base);
531 list_del(&encoder->head);
532 mutex_unlock(&dev->mode_config.mutex);
533 }
534 EXPORT_SYMBOL(drm_encoder_cleanup);
535
536 /**
537 * drm_mode_create - create a new display mode
538 * @dev: DRM device
539 *
540 * LOCKING:
541 * Caller must hold DRM mode_config lock.
542 *
543 * Create a new drm_display_mode, give it an ID, and return it.
544 *
545 * RETURNS:
546 * Pointer to new mode on success, NULL on error.
547 */
548 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
549 {
550 struct drm_display_mode *nmode;
551
552 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
553 if (!nmode)
554 return NULL;
555
556 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
557 return nmode;
558 }
559 EXPORT_SYMBOL(drm_mode_create);
560
561 /**
562 * drm_mode_destroy - remove a mode
563 * @dev: DRM device
564 * @mode: mode to remove
565 *
566 * LOCKING:
567 * Caller must hold mode config lock.
568 *
569 * Free @mode's unique identifier, then free it.
570 */
571 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
572 {
573 drm_mode_object_put(dev, &mode->base);
574
575 kfree(mode);
576 }
577 EXPORT_SYMBOL(drm_mode_destroy);
578
579 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
580 {
581 struct drm_property *edid;
582 struct drm_property *dpms;
583 int i;
584
585 /*
586 * Standard properties (apply to all connectors)
587 */
588 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
589 DRM_MODE_PROP_IMMUTABLE,
590 "EDID", 0);
591 dev->mode_config.edid_property = edid;
592
593 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
594 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
595 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
596 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
597 drm_dpms_enum_list[i].name);
598 dev->mode_config.dpms_property = dpms;
599
600 return 0;
601 }
602
603 /**
604 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
605 * @dev: DRM device
606 *
607 * Called by a driver the first time a DVI-I connector is made.
608 */
609 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
610 {
611 struct drm_property *dvi_i_selector;
612 struct drm_property *dvi_i_subconnector;
613 int i;
614
615 if (dev->mode_config.dvi_i_select_subconnector_property)
616 return 0;
617
618 dvi_i_selector =
619 drm_property_create(dev, DRM_MODE_PROP_ENUM,
620 "select subconnector",
621 ARRAY_SIZE(drm_dvi_i_select_enum_list));
622 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
623 drm_property_add_enum(dvi_i_selector, i,
624 drm_dvi_i_select_enum_list[i].type,
625 drm_dvi_i_select_enum_list[i].name);
626 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
627
628 dvi_i_subconnector =
629 drm_property_create(dev, DRM_MODE_PROP_ENUM |
630 DRM_MODE_PROP_IMMUTABLE,
631 "subconnector",
632 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
633 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
634 drm_property_add_enum(dvi_i_subconnector, i,
635 drm_dvi_i_subconnector_enum_list[i].type,
636 drm_dvi_i_subconnector_enum_list[i].name);
637 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
638
639 return 0;
640 }
641 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
642
643 /**
644 * drm_create_tv_properties - create TV specific connector properties
645 * @dev: DRM device
646 * @num_modes: number of different TV formats (modes) supported
647 * @modes: array of pointers to strings containing name of each format
648 *
649 * Called by a driver's TV initialization routine, this function creates
650 * the TV specific connector properties for a given device. Caller is
651 * responsible for allocating a list of format names and passing them to
652 * this routine.
653 */
654 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
655 char *modes[])
656 {
657 struct drm_property *tv_selector;
658 struct drm_property *tv_subconnector;
659 int i;
660
661 if (dev->mode_config.tv_select_subconnector_property)
662 return 0;
663
664 /*
665 * Basic connector properties
666 */
667 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
668 "select subconnector",
669 ARRAY_SIZE(drm_tv_select_enum_list));
670 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
671 drm_property_add_enum(tv_selector, i,
672 drm_tv_select_enum_list[i].type,
673 drm_tv_select_enum_list[i].name);
674 dev->mode_config.tv_select_subconnector_property = tv_selector;
675
676 tv_subconnector =
677 drm_property_create(dev, DRM_MODE_PROP_ENUM |
678 DRM_MODE_PROP_IMMUTABLE, "subconnector",
679 ARRAY_SIZE(drm_tv_subconnector_enum_list));
680 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
681 drm_property_add_enum(tv_subconnector, i,
682 drm_tv_subconnector_enum_list[i].type,
683 drm_tv_subconnector_enum_list[i].name);
684 dev->mode_config.tv_subconnector_property = tv_subconnector;
685
686 /*
687 * Other, TV specific properties: margins & TV modes.
688 */
689 dev->mode_config.tv_left_margin_property =
690 drm_property_create(dev, DRM_MODE_PROP_RANGE,
691 "left margin", 2);
692 dev->mode_config.tv_left_margin_property->values[0] = 0;
693 dev->mode_config.tv_left_margin_property->values[1] = 100;
694
695 dev->mode_config.tv_right_margin_property =
696 drm_property_create(dev, DRM_MODE_PROP_RANGE,
697 "right margin", 2);
698 dev->mode_config.tv_right_margin_property->values[0] = 0;
699 dev->mode_config.tv_right_margin_property->values[1] = 100;
700
701 dev->mode_config.tv_top_margin_property =
702 drm_property_create(dev, DRM_MODE_PROP_RANGE,
703 "top margin", 2);
704 dev->mode_config.tv_top_margin_property->values[0] = 0;
705 dev->mode_config.tv_top_margin_property->values[1] = 100;
706
707 dev->mode_config.tv_bottom_margin_property =
708 drm_property_create(dev, DRM_MODE_PROP_RANGE,
709 "bottom margin", 2);
710 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
711 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
712
713 dev->mode_config.tv_mode_property =
714 drm_property_create(dev, DRM_MODE_PROP_ENUM,
715 "mode", num_modes);
716 for (i = 0; i < num_modes; i++)
717 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
718 i, modes[i]);
719
720 dev->mode_config.tv_brightness_property =
721 drm_property_create(dev, DRM_MODE_PROP_RANGE,
722 "brightness", 2);
723 dev->mode_config.tv_brightness_property->values[0] = 0;
724 dev->mode_config.tv_brightness_property->values[1] = 100;
725
726 dev->mode_config.tv_contrast_property =
727 drm_property_create(dev, DRM_MODE_PROP_RANGE,
728 "contrast", 2);
729 dev->mode_config.tv_contrast_property->values[0] = 0;
730 dev->mode_config.tv_contrast_property->values[1] = 100;
731
732 dev->mode_config.tv_flicker_reduction_property =
733 drm_property_create(dev, DRM_MODE_PROP_RANGE,
734 "flicker reduction", 2);
735 dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
736 dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
737
738 dev->mode_config.tv_overscan_property =
739 drm_property_create(dev, DRM_MODE_PROP_RANGE,
740 "overscan", 2);
741 dev->mode_config.tv_overscan_property->values[0] = 0;
742 dev->mode_config.tv_overscan_property->values[1] = 100;
743
744 dev->mode_config.tv_saturation_property =
745 drm_property_create(dev, DRM_MODE_PROP_RANGE,
746 "saturation", 2);
747 dev->mode_config.tv_saturation_property->values[0] = 0;
748 dev->mode_config.tv_saturation_property->values[1] = 100;
749
750 dev->mode_config.tv_hue_property =
751 drm_property_create(dev, DRM_MODE_PROP_RANGE,
752 "hue", 2);
753 dev->mode_config.tv_hue_property->values[0] = 0;
754 dev->mode_config.tv_hue_property->values[1] = 100;
755
756 return 0;
757 }
758 EXPORT_SYMBOL(drm_mode_create_tv_properties);
759
760 /**
761 * drm_mode_create_scaling_mode_property - create scaling mode property
762 * @dev: DRM device
763 *
764 * Called by a driver the first time it's needed, must be attached to desired
765 * connectors.
766 */
767 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
768 {
769 struct drm_property *scaling_mode;
770 int i;
771
772 if (dev->mode_config.scaling_mode_property)
773 return 0;
774
775 scaling_mode =
776 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
777 ARRAY_SIZE(drm_scaling_mode_enum_list));
778 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
779 drm_property_add_enum(scaling_mode, i,
780 drm_scaling_mode_enum_list[i].type,
781 drm_scaling_mode_enum_list[i].name);
782
783 dev->mode_config.scaling_mode_property = scaling_mode;
784
785 return 0;
786 }
787 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
788
789 /**
790 * drm_mode_create_dithering_property - create dithering property
791 * @dev: DRM device
792 *
793 * Called by a driver the first time it's needed, must be attached to desired
794 * connectors.
795 */
796 int drm_mode_create_dithering_property(struct drm_device *dev)
797 {
798 struct drm_property *dithering_mode;
799 int i;
800
801 if (dev->mode_config.dithering_mode_property)
802 return 0;
803
804 dithering_mode =
805 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
806 ARRAY_SIZE(drm_dithering_mode_enum_list));
807 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
808 drm_property_add_enum(dithering_mode, i,
809 drm_dithering_mode_enum_list[i].type,
810 drm_dithering_mode_enum_list[i].name);
811 dev->mode_config.dithering_mode_property = dithering_mode;
812
813 return 0;
814 }
815 EXPORT_SYMBOL(drm_mode_create_dithering_property);
816
817 /**
818 * drm_mode_create_dirty_property - create dirty property
819 * @dev: DRM device
820 *
821 * Called by a driver the first time it's needed, must be attached to desired
822 * connectors.
823 */
824 int drm_mode_create_dirty_info_property(struct drm_device *dev)
825 {
826 struct drm_property *dirty_info;
827 int i;
828
829 if (dev->mode_config.dirty_info_property)
830 return 0;
831
832 dirty_info =
833 drm_property_create(dev, DRM_MODE_PROP_ENUM |
834 DRM_MODE_PROP_IMMUTABLE,
835 "dirty",
836 ARRAY_SIZE(drm_dirty_info_enum_list));
837 for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
838 drm_property_add_enum(dirty_info, i,
839 drm_dirty_info_enum_list[i].type,
840 drm_dirty_info_enum_list[i].name);
841 dev->mode_config.dirty_info_property = dirty_info;
842
843 return 0;
844 }
845 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
846
847 /**
848 * drm_mode_config_init - initialize DRM mode_configuration structure
849 * @dev: DRM device
850 *
851 * LOCKING:
852 * None, should happen single threaded at init time.
853 *
854 * Initialize @dev's mode_config structure, used for tracking the graphics
855 * configuration of @dev.
856 */
857 void drm_mode_config_init(struct drm_device *dev)
858 {
859 mutex_init(&dev->mode_config.mutex);
860 mutex_init(&dev->mode_config.idr_mutex);
861 INIT_LIST_HEAD(&dev->mode_config.fb_list);
862 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
863 INIT_LIST_HEAD(&dev->mode_config.connector_list);
864 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
865 INIT_LIST_HEAD(&dev->mode_config.property_list);
866 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
867 idr_init(&dev->mode_config.crtc_idr);
868
869 mutex_lock(&dev->mode_config.mutex);
870 drm_mode_create_standard_connector_properties(dev);
871 mutex_unlock(&dev->mode_config.mutex);
872
873 /* Just to be sure */
874 dev->mode_config.num_fb = 0;
875 dev->mode_config.num_connector = 0;
876 dev->mode_config.num_crtc = 0;
877 dev->mode_config.num_encoder = 0;
878 }
879 EXPORT_SYMBOL(drm_mode_config_init);
880
881 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
882 {
883 uint32_t total_objects = 0;
884
885 total_objects += dev->mode_config.num_crtc;
886 total_objects += dev->mode_config.num_connector;
887 total_objects += dev->mode_config.num_encoder;
888
889 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
890 if (!group->id_list)
891 return -ENOMEM;
892
893 group->num_crtcs = 0;
894 group->num_connectors = 0;
895 group->num_encoders = 0;
896 return 0;
897 }
898
899 int drm_mode_group_init_legacy_group(struct drm_device *dev,
900 struct drm_mode_group *group)
901 {
902 struct drm_crtc *crtc;
903 struct drm_encoder *encoder;
904 struct drm_connector *connector;
905 int ret;
906
907 if ((ret = drm_mode_group_init(dev, group)))
908 return ret;
909
910 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
911 group->id_list[group->num_crtcs++] = crtc->base.id;
912
913 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
914 group->id_list[group->num_crtcs + group->num_encoders++] =
915 encoder->base.id;
916
917 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
918 group->id_list[group->num_crtcs + group->num_encoders +
919 group->num_connectors++] = connector->base.id;
920
921 return 0;
922 }
923
924 /**
925 * drm_mode_config_cleanup - free up DRM mode_config info
926 * @dev: DRM device
927 *
928 * LOCKING:
929 * Caller must hold mode config lock.
930 *
931 * Free up all the connectors and CRTCs associated with this DRM device, then
932 * free up the framebuffers and associated buffer objects.
933 *
934 * FIXME: cleanup any dangling user buffer objects too
935 */
936 void drm_mode_config_cleanup(struct drm_device *dev)
937 {
938 struct drm_connector *connector, *ot;
939 struct drm_crtc *crtc, *ct;
940 struct drm_encoder *encoder, *enct;
941 struct drm_framebuffer *fb, *fbt;
942 struct drm_property *property, *pt;
943
944 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
945 head) {
946 encoder->funcs->destroy(encoder);
947 }
948
949 list_for_each_entry_safe(connector, ot,
950 &dev->mode_config.connector_list, head) {
951 connector->funcs->destroy(connector);
952 }
953
954 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
955 head) {
956 drm_property_destroy(dev, property);
957 }
958
959 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
960 fb->funcs->destroy(fb);
961 }
962
963 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
964 crtc->funcs->destroy(crtc);
965 }
966
967 }
968 EXPORT_SYMBOL(drm_mode_config_cleanup);
969
970 /**
971 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
972 * @out: drm_mode_modeinfo struct to return to the user
973 * @in: drm_display_mode to use
974 *
975 * LOCKING:
976 * None.
977 *
978 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
979 * the user.
980 */
981 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
982 struct drm_display_mode *in)
983 {
984 out->clock = in->clock;
985 out->hdisplay = in->hdisplay;
986 out->hsync_start = in->hsync_start;
987 out->hsync_end = in->hsync_end;
988 out->htotal = in->htotal;
989 out->hskew = in->hskew;
990 out->vdisplay = in->vdisplay;
991 out->vsync_start = in->vsync_start;
992 out->vsync_end = in->vsync_end;
993 out->vtotal = in->vtotal;
994 out->vscan = in->vscan;
995 out->vrefresh = in->vrefresh;
996 out->flags = in->flags;
997 out->type = in->type;
998 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
999 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1000 }
1001
1002 /**
1003 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1004 * @out: drm_display_mode to return to the user
1005 * @in: drm_mode_modeinfo to use
1006 *
1007 * LOCKING:
1008 * None.
1009 *
1010 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1011 * the caller.
1012 */
1013 void drm_crtc_convert_umode(struct drm_display_mode *out,
1014 struct drm_mode_modeinfo *in)
1015 {
1016 out->clock = in->clock;
1017 out->hdisplay = in->hdisplay;
1018 out->hsync_start = in->hsync_start;
1019 out->hsync_end = in->hsync_end;
1020 out->htotal = in->htotal;
1021 out->hskew = in->hskew;
1022 out->vdisplay = in->vdisplay;
1023 out->vsync_start = in->vsync_start;
1024 out->vsync_end = in->vsync_end;
1025 out->vtotal = in->vtotal;
1026 out->vscan = in->vscan;
1027 out->vrefresh = in->vrefresh;
1028 out->flags = in->flags;
1029 out->type = in->type;
1030 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1031 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1032 }
1033
1034 /**
1035 * drm_mode_getresources - get graphics configuration
1036 * @inode: inode from the ioctl
1037 * @filp: file * from the ioctl
1038 * @cmd: cmd from ioctl
1039 * @arg: arg from ioctl
1040 *
1041 * LOCKING:
1042 * Takes mode config lock.
1043 *
1044 * Construct a set of configuration description structures and return
1045 * them to the user, including CRTC, connector and framebuffer configuration.
1046 *
1047 * Called by the user via ioctl.
1048 *
1049 * RETURNS:
1050 * Zero on success, errno on failure.
1051 */
1052 int drm_mode_getresources(struct drm_device *dev, void *data,
1053 struct drm_file *file_priv)
1054 {
1055 struct drm_mode_card_res *card_res = data;
1056 struct list_head *lh;
1057 struct drm_framebuffer *fb;
1058 struct drm_connector *connector;
1059 struct drm_crtc *crtc;
1060 struct drm_encoder *encoder;
1061 int ret = 0;
1062 int connector_count = 0;
1063 int crtc_count = 0;
1064 int fb_count = 0;
1065 int encoder_count = 0;
1066 int copied = 0, i;
1067 uint32_t __user *fb_id;
1068 uint32_t __user *crtc_id;
1069 uint32_t __user *connector_id;
1070 uint32_t __user *encoder_id;
1071 struct drm_mode_group *mode_group;
1072
1073 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1074 return -EINVAL;
1075
1076 mutex_lock(&dev->mode_config.mutex);
1077
1078 /*
1079 * For the non-control nodes we need to limit the list of resources
1080 * by IDs in the group list for this node
1081 */
1082 list_for_each(lh, &file_priv->fbs)
1083 fb_count++;
1084
1085 mode_group = &file_priv->master->minor->mode_group;
1086 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1087
1088 list_for_each(lh, &dev->mode_config.crtc_list)
1089 crtc_count++;
1090
1091 list_for_each(lh, &dev->mode_config.connector_list)
1092 connector_count++;
1093
1094 list_for_each(lh, &dev->mode_config.encoder_list)
1095 encoder_count++;
1096 } else {
1097
1098 crtc_count = mode_group->num_crtcs;
1099 connector_count = mode_group->num_connectors;
1100 encoder_count = mode_group->num_encoders;
1101 }
1102
1103 card_res->max_height = dev->mode_config.max_height;
1104 card_res->min_height = dev->mode_config.min_height;
1105 card_res->max_width = dev->mode_config.max_width;
1106 card_res->min_width = dev->mode_config.min_width;
1107
1108 /* handle this in 4 parts */
1109 /* FBs */
1110 if (card_res->count_fbs >= fb_count) {
1111 copied = 0;
1112 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1113 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1114 if (put_user(fb->base.id, fb_id + copied)) {
1115 ret = -EFAULT;
1116 goto out;
1117 }
1118 copied++;
1119 }
1120 }
1121 card_res->count_fbs = fb_count;
1122
1123 /* CRTCs */
1124 if (card_res->count_crtcs >= crtc_count) {
1125 copied = 0;
1126 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1127 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1128 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1129 head) {
1130 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1131 if (put_user(crtc->base.id, crtc_id + copied)) {
1132 ret = -EFAULT;
1133 goto out;
1134 }
1135 copied++;
1136 }
1137 } else {
1138 for (i = 0; i < mode_group->num_crtcs; i++) {
1139 if (put_user(mode_group->id_list[i],
1140 crtc_id + copied)) {
1141 ret = -EFAULT;
1142 goto out;
1143 }
1144 copied++;
1145 }
1146 }
1147 }
1148 card_res->count_crtcs = crtc_count;
1149
1150 /* Encoders */
1151 if (card_res->count_encoders >= encoder_count) {
1152 copied = 0;
1153 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1154 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1155 list_for_each_entry(encoder,
1156 &dev->mode_config.encoder_list,
1157 head) {
1158 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1159 drm_get_encoder_name(encoder));
1160 if (put_user(encoder->base.id, encoder_id +
1161 copied)) {
1162 ret = -EFAULT;
1163 goto out;
1164 }
1165 copied++;
1166 }
1167 } else {
1168 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1169 if (put_user(mode_group->id_list[i],
1170 encoder_id + copied)) {
1171 ret = -EFAULT;
1172 goto out;
1173 }
1174 copied++;
1175 }
1176
1177 }
1178 }
1179 card_res->count_encoders = encoder_count;
1180
1181 /* Connectors */
1182 if (card_res->count_connectors >= connector_count) {
1183 copied = 0;
1184 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1185 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1186 list_for_each_entry(connector,
1187 &dev->mode_config.connector_list,
1188 head) {
1189 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1190 connector->base.id,
1191 drm_get_connector_name(connector));
1192 if (put_user(connector->base.id,
1193 connector_id + copied)) {
1194 ret = -EFAULT;
1195 goto out;
1196 }
1197 copied++;
1198 }
1199 } else {
1200 int start = mode_group->num_crtcs +
1201 mode_group->num_encoders;
1202 for (i = start; i < start + mode_group->num_connectors; i++) {
1203 if (put_user(mode_group->id_list[i],
1204 connector_id + copied)) {
1205 ret = -EFAULT;
1206 goto out;
1207 }
1208 copied++;
1209 }
1210 }
1211 }
1212 card_res->count_connectors = connector_count;
1213
1214 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1215 card_res->count_connectors, card_res->count_encoders);
1216
1217 out:
1218 mutex_unlock(&dev->mode_config.mutex);
1219 return ret;
1220 }
1221
1222 /**
1223 * drm_mode_getcrtc - get CRTC configuration
1224 * @inode: inode from the ioctl
1225 * @filp: file * from the ioctl
1226 * @cmd: cmd from ioctl
1227 * @arg: arg from ioctl
1228 *
1229 * LOCKING:
1230 * Caller? (FIXME)
1231 *
1232 * Construct a CRTC configuration structure to return to the user.
1233 *
1234 * Called by the user via ioctl.
1235 *
1236 * RETURNS:
1237 * Zero on success, errno on failure.
1238 */
1239 int drm_mode_getcrtc(struct drm_device *dev,
1240 void *data, struct drm_file *file_priv)
1241 {
1242 struct drm_mode_crtc *crtc_resp = data;
1243 struct drm_crtc *crtc;
1244 struct drm_mode_object *obj;
1245 int ret = 0;
1246
1247 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1248 return -EINVAL;
1249
1250 mutex_lock(&dev->mode_config.mutex);
1251
1252 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1253 DRM_MODE_OBJECT_CRTC);
1254 if (!obj) {
1255 ret = -EINVAL;
1256 goto out;
1257 }
1258 crtc = obj_to_crtc(obj);
1259
1260 crtc_resp->x = crtc->x;
1261 crtc_resp->y = crtc->y;
1262 crtc_resp->gamma_size = crtc->gamma_size;
1263 if (crtc->fb)
1264 crtc_resp->fb_id = crtc->fb->base.id;
1265 else
1266 crtc_resp->fb_id = 0;
1267
1268 if (crtc->enabled) {
1269
1270 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1271 crtc_resp->mode_valid = 1;
1272
1273 } else {
1274 crtc_resp->mode_valid = 0;
1275 }
1276
1277 out:
1278 mutex_unlock(&dev->mode_config.mutex);
1279 return ret;
1280 }
1281
1282 /**
1283 * drm_mode_getconnector - get connector configuration
1284 * @inode: inode from the ioctl
1285 * @filp: file * from the ioctl
1286 * @cmd: cmd from ioctl
1287 * @arg: arg from ioctl
1288 *
1289 * LOCKING:
1290 * Caller? (FIXME)
1291 *
1292 * Construct a connector configuration structure to return to the user.
1293 *
1294 * Called by the user via ioctl.
1295 *
1296 * RETURNS:
1297 * Zero on success, errno on failure.
1298 */
1299 int drm_mode_getconnector(struct drm_device *dev, void *data,
1300 struct drm_file *file_priv)
1301 {
1302 struct drm_mode_get_connector *out_resp = data;
1303 struct drm_mode_object *obj;
1304 struct drm_connector *connector;
1305 struct drm_display_mode *mode;
1306 int mode_count = 0;
1307 int props_count = 0;
1308 int encoders_count = 0;
1309 int ret = 0;
1310 int copied = 0;
1311 int i;
1312 struct drm_mode_modeinfo u_mode;
1313 struct drm_mode_modeinfo __user *mode_ptr;
1314 uint32_t __user *prop_ptr;
1315 uint64_t __user *prop_values;
1316 uint32_t __user *encoder_ptr;
1317
1318 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1319 return -EINVAL;
1320
1321 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1322
1323 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1324
1325 mutex_lock(&dev->mode_config.mutex);
1326
1327 obj = drm_mode_object_find(dev, out_resp->connector_id,
1328 DRM_MODE_OBJECT_CONNECTOR);
1329 if (!obj) {
1330 ret = -EINVAL;
1331 goto out;
1332 }
1333 connector = obj_to_connector(obj);
1334
1335 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1336 if (connector->property_ids[i] != 0) {
1337 props_count++;
1338 }
1339 }
1340
1341 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1342 if (connector->encoder_ids[i] != 0) {
1343 encoders_count++;
1344 }
1345 }
1346
1347 if (out_resp->count_modes == 0) {
1348 connector->funcs->fill_modes(connector,
1349 dev->mode_config.max_width,
1350 dev->mode_config.max_height);
1351 }
1352
1353 /* delayed so we get modes regardless of pre-fill_modes state */
1354 list_for_each_entry(mode, &connector->modes, head)
1355 mode_count++;
1356
1357 out_resp->connector_id = connector->base.id;
1358 out_resp->connector_type = connector->connector_type;
1359 out_resp->connector_type_id = connector->connector_type_id;
1360 out_resp->mm_width = connector->display_info.width_mm;
1361 out_resp->mm_height = connector->display_info.height_mm;
1362 out_resp->subpixel = connector->display_info.subpixel_order;
1363 out_resp->connection = connector->status;
1364 if (connector->encoder)
1365 out_resp->encoder_id = connector->encoder->base.id;
1366 else
1367 out_resp->encoder_id = 0;
1368
1369 /*
1370 * This ioctl is called twice, once to determine how much space is
1371 * needed, and the 2nd time to fill it.
1372 */
1373 if ((out_resp->count_modes >= mode_count) && mode_count) {
1374 copied = 0;
1375 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1376 list_for_each_entry(mode, &connector->modes, head) {
1377 drm_crtc_convert_to_umode(&u_mode, mode);
1378 if (copy_to_user(mode_ptr + copied,
1379 &u_mode, sizeof(u_mode))) {
1380 ret = -EFAULT;
1381 goto out;
1382 }
1383 copied++;
1384 }
1385 }
1386 out_resp->count_modes = mode_count;
1387
1388 if ((out_resp->count_props >= props_count) && props_count) {
1389 copied = 0;
1390 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1391 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1392 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1393 if (connector->property_ids[i] != 0) {
1394 if (put_user(connector->property_ids[i],
1395 prop_ptr + copied)) {
1396 ret = -EFAULT;
1397 goto out;
1398 }
1399
1400 if (put_user(connector->property_values[i],
1401 prop_values + copied)) {
1402 ret = -EFAULT;
1403 goto out;
1404 }
1405 copied++;
1406 }
1407 }
1408 }
1409 out_resp->count_props = props_count;
1410
1411 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1412 copied = 0;
1413 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1414 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1415 if (connector->encoder_ids[i] != 0) {
1416 if (put_user(connector->encoder_ids[i],
1417 encoder_ptr + copied)) {
1418 ret = -EFAULT;
1419 goto out;
1420 }
1421 copied++;
1422 }
1423 }
1424 }
1425 out_resp->count_encoders = encoders_count;
1426
1427 out:
1428 mutex_unlock(&dev->mode_config.mutex);
1429 return ret;
1430 }
1431
1432 int drm_mode_getencoder(struct drm_device *dev, void *data,
1433 struct drm_file *file_priv)
1434 {
1435 struct drm_mode_get_encoder *enc_resp = data;
1436 struct drm_mode_object *obj;
1437 struct drm_encoder *encoder;
1438 int ret = 0;
1439
1440 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1441 return -EINVAL;
1442
1443 mutex_lock(&dev->mode_config.mutex);
1444 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1445 DRM_MODE_OBJECT_ENCODER);
1446 if (!obj) {
1447 ret = -EINVAL;
1448 goto out;
1449 }
1450 encoder = obj_to_encoder(obj);
1451
1452 if (encoder->crtc)
1453 enc_resp->crtc_id = encoder->crtc->base.id;
1454 else
1455 enc_resp->crtc_id = 0;
1456 enc_resp->encoder_type = encoder->encoder_type;
1457 enc_resp->encoder_id = encoder->base.id;
1458 enc_resp->possible_crtcs = encoder->possible_crtcs;
1459 enc_resp->possible_clones = encoder->possible_clones;
1460
1461 out:
1462 mutex_unlock(&dev->mode_config.mutex);
1463 return ret;
1464 }
1465
1466 /**
1467 * drm_mode_setcrtc - set CRTC configuration
1468 * @inode: inode from the ioctl
1469 * @filp: file * from the ioctl
1470 * @cmd: cmd from ioctl
1471 * @arg: arg from ioctl
1472 *
1473 * LOCKING:
1474 * Caller? (FIXME)
1475 *
1476 * Build a new CRTC configuration based on user request.
1477 *
1478 * Called by the user via ioctl.
1479 *
1480 * RETURNS:
1481 * Zero on success, errno on failure.
1482 */
1483 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1484 struct drm_file *file_priv)
1485 {
1486 struct drm_mode_config *config = &dev->mode_config;
1487 struct drm_mode_crtc *crtc_req = data;
1488 struct drm_mode_object *obj;
1489 struct drm_crtc *crtc, *crtcfb;
1490 struct drm_connector **connector_set = NULL, *connector;
1491 struct drm_framebuffer *fb = NULL;
1492 struct drm_display_mode *mode = NULL;
1493 struct drm_mode_set set;
1494 uint32_t __user *set_connectors_ptr;
1495 int ret = 0;
1496 int i;
1497
1498 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1499 return -EINVAL;
1500
1501 mutex_lock(&dev->mode_config.mutex);
1502 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1503 DRM_MODE_OBJECT_CRTC);
1504 if (!obj) {
1505 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1506 ret = -EINVAL;
1507 goto out;
1508 }
1509 crtc = obj_to_crtc(obj);
1510 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1511
1512 if (crtc_req->mode_valid) {
1513 /* If we have a mode we need a framebuffer. */
1514 /* If we pass -1, set the mode with the currently bound fb */
1515 if (crtc_req->fb_id == -1) {
1516 list_for_each_entry(crtcfb,
1517 &dev->mode_config.crtc_list, head) {
1518 if (crtcfb == crtc) {
1519 DRM_DEBUG_KMS("Using current fb for "
1520 "setmode\n");
1521 fb = crtc->fb;
1522 }
1523 }
1524 } else {
1525 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1526 DRM_MODE_OBJECT_FB);
1527 if (!obj) {
1528 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1529 crtc_req->fb_id);
1530 ret = -EINVAL;
1531 goto out;
1532 }
1533 fb = obj_to_fb(obj);
1534 }
1535
1536 mode = drm_mode_create(dev);
1537 drm_crtc_convert_umode(mode, &crtc_req->mode);
1538 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1539 }
1540
1541 if (crtc_req->count_connectors == 0 && mode) {
1542 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1543 ret = -EINVAL;
1544 goto out;
1545 }
1546
1547 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1548 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1549 crtc_req->count_connectors);
1550 ret = -EINVAL;
1551 goto out;
1552 }
1553
1554 if (crtc_req->count_connectors > 0) {
1555 u32 out_id;
1556
1557 /* Avoid unbounded kernel memory allocation */
1558 if (crtc_req->count_connectors > config->num_connector) {
1559 ret = -EINVAL;
1560 goto out;
1561 }
1562
1563 connector_set = kmalloc(crtc_req->count_connectors *
1564 sizeof(struct drm_connector *),
1565 GFP_KERNEL);
1566 if (!connector_set) {
1567 ret = -ENOMEM;
1568 goto out;
1569 }
1570
1571 for (i = 0; i < crtc_req->count_connectors; i++) {
1572 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1573 if (get_user(out_id, &set_connectors_ptr[i])) {
1574 ret = -EFAULT;
1575 goto out;
1576 }
1577
1578 obj = drm_mode_object_find(dev, out_id,
1579 DRM_MODE_OBJECT_CONNECTOR);
1580 if (!obj) {
1581 DRM_DEBUG_KMS("Connector id %d unknown\n",
1582 out_id);
1583 ret = -EINVAL;
1584 goto out;
1585 }
1586 connector = obj_to_connector(obj);
1587 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1588 connector->base.id,
1589 drm_get_connector_name(connector));
1590
1591 connector_set[i] = connector;
1592 }
1593 }
1594
1595 set.crtc = crtc;
1596 set.x = crtc_req->x;
1597 set.y = crtc_req->y;
1598 set.mode = mode;
1599 set.connectors = connector_set;
1600 set.num_connectors = crtc_req->count_connectors;
1601 set.fb = fb;
1602 ret = crtc->funcs->set_config(&set);
1603
1604 out:
1605 kfree(connector_set);
1606 mutex_unlock(&dev->mode_config.mutex);
1607 return ret;
1608 }
1609
1610 int drm_mode_cursor_ioctl(struct drm_device *dev,
1611 void *data, struct drm_file *file_priv)
1612 {
1613 struct drm_mode_cursor *req = data;
1614 struct drm_mode_object *obj;
1615 struct drm_crtc *crtc;
1616 int ret = 0;
1617
1618 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1619 return -EINVAL;
1620
1621 if (!req->flags) {
1622 DRM_ERROR("no operation set\n");
1623 return -EINVAL;
1624 }
1625
1626 mutex_lock(&dev->mode_config.mutex);
1627 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1628 if (!obj) {
1629 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1630 ret = -EINVAL;
1631 goto out;
1632 }
1633 crtc = obj_to_crtc(obj);
1634
1635 if (req->flags & DRM_MODE_CURSOR_BO) {
1636 if (!crtc->funcs->cursor_set) {
1637 DRM_ERROR("crtc does not support cursor\n");
1638 ret = -ENXIO;
1639 goto out;
1640 }
1641 /* Turns off the cursor if handle is 0 */
1642 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1643 req->width, req->height);
1644 }
1645
1646 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1647 if (crtc->funcs->cursor_move) {
1648 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1649 } else {
1650 DRM_ERROR("crtc does not support cursor\n");
1651 ret = -EFAULT;
1652 goto out;
1653 }
1654 }
1655 out:
1656 mutex_unlock(&dev->mode_config.mutex);
1657 return ret;
1658 }
1659
1660 /**
1661 * drm_mode_addfb - add an FB to the graphics configuration
1662 * @inode: inode from the ioctl
1663 * @filp: file * from the ioctl
1664 * @cmd: cmd from ioctl
1665 * @arg: arg from ioctl
1666 *
1667 * LOCKING:
1668 * Takes mode config lock.
1669 *
1670 * Add a new FB to the specified CRTC, given a user request.
1671 *
1672 * Called by the user via ioctl.
1673 *
1674 * RETURNS:
1675 * Zero on success, errno on failure.
1676 */
1677 int drm_mode_addfb(struct drm_device *dev,
1678 void *data, struct drm_file *file_priv)
1679 {
1680 struct drm_mode_fb_cmd *r = data;
1681 struct drm_mode_config *config = &dev->mode_config;
1682 struct drm_framebuffer *fb;
1683 int ret = 0;
1684
1685 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1686 return -EINVAL;
1687
1688 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1689 DRM_ERROR("mode new framebuffer width not within limits\n");
1690 return -EINVAL;
1691 }
1692 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1693 DRM_ERROR("mode new framebuffer height not within limits\n");
1694 return -EINVAL;
1695 }
1696
1697 mutex_lock(&dev->mode_config.mutex);
1698
1699 /* TODO check buffer is sufficiently large */
1700 /* TODO setup destructor callback */
1701
1702 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1703 if (IS_ERR(fb)) {
1704 DRM_ERROR("could not create framebuffer\n");
1705 ret = PTR_ERR(fb);
1706 goto out;
1707 }
1708
1709 r->fb_id = fb->base.id;
1710 list_add(&fb->filp_head, &file_priv->fbs);
1711 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
1712
1713 out:
1714 mutex_unlock(&dev->mode_config.mutex);
1715 return ret;
1716 }
1717
1718 /**
1719 * drm_mode_rmfb - remove an FB from the configuration
1720 * @inode: inode from the ioctl
1721 * @filp: file * from the ioctl
1722 * @cmd: cmd from ioctl
1723 * @arg: arg from ioctl
1724 *
1725 * LOCKING:
1726 * Takes mode config lock.
1727 *
1728 * Remove the FB specified by the user.
1729 *
1730 * Called by the user via ioctl.
1731 *
1732 * RETURNS:
1733 * Zero on success, errno on failure.
1734 */
1735 int drm_mode_rmfb(struct drm_device *dev,
1736 void *data, struct drm_file *file_priv)
1737 {
1738 struct drm_mode_object *obj;
1739 struct drm_framebuffer *fb = NULL;
1740 struct drm_framebuffer *fbl = NULL;
1741 uint32_t *id = data;
1742 int ret = 0;
1743 int found = 0;
1744
1745 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1746 return -EINVAL;
1747
1748 mutex_lock(&dev->mode_config.mutex);
1749 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1750 /* TODO check that we really get a framebuffer back. */
1751 if (!obj) {
1752 DRM_ERROR("mode invalid framebuffer id\n");
1753 ret = -EINVAL;
1754 goto out;
1755 }
1756 fb = obj_to_fb(obj);
1757
1758 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1759 if (fb == fbl)
1760 found = 1;
1761
1762 if (!found) {
1763 DRM_ERROR("tried to remove a fb that we didn't own\n");
1764 ret = -EINVAL;
1765 goto out;
1766 }
1767
1768 /* TODO release all crtc connected to the framebuffer */
1769 /* TODO unhock the destructor from the buffer object */
1770
1771 list_del(&fb->filp_head);
1772 fb->funcs->destroy(fb);
1773
1774 out:
1775 mutex_unlock(&dev->mode_config.mutex);
1776 return ret;
1777 }
1778
1779 /**
1780 * drm_mode_getfb - get FB info
1781 * @inode: inode from the ioctl
1782 * @filp: file * from the ioctl
1783 * @cmd: cmd from ioctl
1784 * @arg: arg from ioctl
1785 *
1786 * LOCKING:
1787 * Caller? (FIXME)
1788 *
1789 * Lookup the FB given its ID and return info about it.
1790 *
1791 * Called by the user via ioctl.
1792 *
1793 * RETURNS:
1794 * Zero on success, errno on failure.
1795 */
1796 int drm_mode_getfb(struct drm_device *dev,
1797 void *data, struct drm_file *file_priv)
1798 {
1799 struct drm_mode_fb_cmd *r = data;
1800 struct drm_mode_object *obj;
1801 struct drm_framebuffer *fb;
1802 int ret = 0;
1803
1804 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1805 return -EINVAL;
1806
1807 mutex_lock(&dev->mode_config.mutex);
1808 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1809 if (!obj) {
1810 DRM_ERROR("invalid framebuffer id\n");
1811 ret = -EINVAL;
1812 goto out;
1813 }
1814 fb = obj_to_fb(obj);
1815
1816 r->height = fb->height;
1817 r->width = fb->width;
1818 r->depth = fb->depth;
1819 r->bpp = fb->bits_per_pixel;
1820 r->pitch = fb->pitch;
1821 fb->funcs->create_handle(fb, file_priv, &r->handle);
1822
1823 out:
1824 mutex_unlock(&dev->mode_config.mutex);
1825 return ret;
1826 }
1827
1828 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1829 void *data, struct drm_file *file_priv)
1830 {
1831 struct drm_clip_rect __user *clips_ptr;
1832 struct drm_clip_rect *clips = NULL;
1833 struct drm_mode_fb_dirty_cmd *r = data;
1834 struct drm_mode_object *obj;
1835 struct drm_framebuffer *fb;
1836 unsigned flags;
1837 int num_clips;
1838 int ret = 0;
1839
1840 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1841 return -EINVAL;
1842
1843 mutex_lock(&dev->mode_config.mutex);
1844 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1845 if (!obj) {
1846 DRM_ERROR("invalid framebuffer id\n");
1847 ret = -EINVAL;
1848 goto out_err1;
1849 }
1850 fb = obj_to_fb(obj);
1851
1852 num_clips = r->num_clips;
1853 clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1854
1855 if (!num_clips != !clips_ptr) {
1856 ret = -EINVAL;
1857 goto out_err1;
1858 }
1859
1860 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1861
1862 /* If userspace annotates copy, clips must come in pairs */
1863 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1864 ret = -EINVAL;
1865 goto out_err1;
1866 }
1867
1868 if (num_clips && clips_ptr) {
1869 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1870 if (!clips) {
1871 ret = -ENOMEM;
1872 goto out_err1;
1873 }
1874
1875 ret = copy_from_user(clips, clips_ptr,
1876 num_clips * sizeof(*clips));
1877 if (ret) {
1878 ret = -EFAULT;
1879 goto out_err2;
1880 }
1881 }
1882
1883 if (fb->funcs->dirty) {
1884 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
1885 clips, num_clips);
1886 } else {
1887 ret = -ENOSYS;
1888 goto out_err2;
1889 }
1890
1891 out_err2:
1892 kfree(clips);
1893 out_err1:
1894 mutex_unlock(&dev->mode_config.mutex);
1895 return ret;
1896 }
1897
1898
1899 /**
1900 * drm_fb_release - remove and free the FBs on this file
1901 * @filp: file * from the ioctl
1902 *
1903 * LOCKING:
1904 * Takes mode config lock.
1905 *
1906 * Destroy all the FBs associated with @filp.
1907 *
1908 * Called by the user via ioctl.
1909 *
1910 * RETURNS:
1911 * Zero on success, errno on failure.
1912 */
1913 void drm_fb_release(struct drm_file *priv)
1914 {
1915 struct drm_device *dev = priv->minor->dev;
1916 struct drm_framebuffer *fb, *tfb;
1917
1918 mutex_lock(&dev->mode_config.mutex);
1919 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1920 list_del(&fb->filp_head);
1921 fb->funcs->destroy(fb);
1922 }
1923 mutex_unlock(&dev->mode_config.mutex);
1924 }
1925
1926 /**
1927 * drm_mode_attachmode - add a mode to the user mode list
1928 * @dev: DRM device
1929 * @connector: connector to add the mode to
1930 * @mode: mode to add
1931 *
1932 * Add @mode to @connector's user mode list.
1933 */
1934 static int drm_mode_attachmode(struct drm_device *dev,
1935 struct drm_connector *connector,
1936 struct drm_display_mode *mode)
1937 {
1938 int ret = 0;
1939
1940 list_add_tail(&mode->head, &connector->user_modes);
1941 return ret;
1942 }
1943
1944 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1945 struct drm_display_mode *mode)
1946 {
1947 struct drm_connector *connector;
1948 int ret = 0;
1949 struct drm_display_mode *dup_mode;
1950 int need_dup = 0;
1951 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1952 if (!connector->encoder)
1953 break;
1954 if (connector->encoder->crtc == crtc) {
1955 if (need_dup)
1956 dup_mode = drm_mode_duplicate(dev, mode);
1957 else
1958 dup_mode = mode;
1959 ret = drm_mode_attachmode(dev, connector, dup_mode);
1960 if (ret)
1961 return ret;
1962 need_dup = 1;
1963 }
1964 }
1965 return 0;
1966 }
1967 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1968
1969 static int drm_mode_detachmode(struct drm_device *dev,
1970 struct drm_connector *connector,
1971 struct drm_display_mode *mode)
1972 {
1973 int found = 0;
1974 int ret = 0;
1975 struct drm_display_mode *match_mode, *t;
1976
1977 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1978 if (drm_mode_equal(match_mode, mode)) {
1979 list_del(&match_mode->head);
1980 drm_mode_destroy(dev, match_mode);
1981 found = 1;
1982 break;
1983 }
1984 }
1985
1986 if (!found)
1987 ret = -EINVAL;
1988
1989 return ret;
1990 }
1991
1992 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1993 {
1994 struct drm_connector *connector;
1995
1996 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1997 drm_mode_detachmode(dev, connector, mode);
1998 }
1999 return 0;
2000 }
2001 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2002
2003 /**
2004 * drm_fb_attachmode - Attach a user mode to an connector
2005 * @inode: inode from the ioctl
2006 * @filp: file * from the ioctl
2007 * @cmd: cmd from ioctl
2008 * @arg: arg from ioctl
2009 *
2010 * This attaches a user specified mode to an connector.
2011 * Called by the user via ioctl.
2012 *
2013 * RETURNS:
2014 * Zero on success, errno on failure.
2015 */
2016 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2017 void *data, struct drm_file *file_priv)
2018 {
2019 struct drm_mode_mode_cmd *mode_cmd = data;
2020 struct drm_connector *connector;
2021 struct drm_display_mode *mode;
2022 struct drm_mode_object *obj;
2023 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2024 int ret = 0;
2025
2026 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2027 return -EINVAL;
2028
2029 mutex_lock(&dev->mode_config.mutex);
2030
2031 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2032 if (!obj) {
2033 ret = -EINVAL;
2034 goto out;
2035 }
2036 connector = obj_to_connector(obj);
2037
2038 mode = drm_mode_create(dev);
2039 if (!mode) {
2040 ret = -ENOMEM;
2041 goto out;
2042 }
2043
2044 drm_crtc_convert_umode(mode, umode);
2045
2046 ret = drm_mode_attachmode(dev, connector, mode);
2047 out:
2048 mutex_unlock(&dev->mode_config.mutex);
2049 return ret;
2050 }
2051
2052
2053 /**
2054 * drm_fb_detachmode - Detach a user specified mode from an connector
2055 * @inode: inode from the ioctl
2056 * @filp: file * from the ioctl
2057 * @cmd: cmd from ioctl
2058 * @arg: arg from ioctl
2059 *
2060 * Called by the user via ioctl.
2061 *
2062 * RETURNS:
2063 * Zero on success, errno on failure.
2064 */
2065 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2066 void *data, struct drm_file *file_priv)
2067 {
2068 struct drm_mode_object *obj;
2069 struct drm_mode_mode_cmd *mode_cmd = data;
2070 struct drm_connector *connector;
2071 struct drm_display_mode mode;
2072 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2073 int ret = 0;
2074
2075 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2076 return -EINVAL;
2077
2078 mutex_lock(&dev->mode_config.mutex);
2079
2080 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2081 if (!obj) {
2082 ret = -EINVAL;
2083 goto out;
2084 }
2085 connector = obj_to_connector(obj);
2086
2087 drm_crtc_convert_umode(&mode, umode);
2088 ret = drm_mode_detachmode(dev, connector, &mode);
2089 out:
2090 mutex_unlock(&dev->mode_config.mutex);
2091 return ret;
2092 }
2093
2094 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2095 const char *name, int num_values)
2096 {
2097 struct drm_property *property = NULL;
2098
2099 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2100 if (!property)
2101 return NULL;
2102
2103 if (num_values) {
2104 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2105 if (!property->values)
2106 goto fail;
2107 }
2108
2109 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2110 property->flags = flags;
2111 property->num_values = num_values;
2112 INIT_LIST_HEAD(&property->enum_blob_list);
2113
2114 if (name)
2115 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2116
2117 list_add_tail(&property->head, &dev->mode_config.property_list);
2118 return property;
2119 fail:
2120 kfree(property);
2121 return NULL;
2122 }
2123 EXPORT_SYMBOL(drm_property_create);
2124
2125 int drm_property_add_enum(struct drm_property *property, int index,
2126 uint64_t value, const char *name)
2127 {
2128 struct drm_property_enum *prop_enum;
2129
2130 if (!(property->flags & DRM_MODE_PROP_ENUM))
2131 return -EINVAL;
2132
2133 if (!list_empty(&property->enum_blob_list)) {
2134 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2135 if (prop_enum->value == value) {
2136 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2137 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2138 return 0;
2139 }
2140 }
2141 }
2142
2143 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2144 if (!prop_enum)
2145 return -ENOMEM;
2146
2147 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2148 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2149 prop_enum->value = value;
2150
2151 property->values[index] = value;
2152 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2153 return 0;
2154 }
2155 EXPORT_SYMBOL(drm_property_add_enum);
2156
2157 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2158 {
2159 struct drm_property_enum *prop_enum, *pt;
2160
2161 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2162 list_del(&prop_enum->head);
2163 kfree(prop_enum);
2164 }
2165
2166 if (property->num_values)
2167 kfree(property->values);
2168 drm_mode_object_put(dev, &property->base);
2169 list_del(&property->head);
2170 kfree(property);
2171 }
2172 EXPORT_SYMBOL(drm_property_destroy);
2173
2174 int drm_connector_attach_property(struct drm_connector *connector,
2175 struct drm_property *property, uint64_t init_val)
2176 {
2177 int i;
2178
2179 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2180 if (connector->property_ids[i] == 0) {
2181 connector->property_ids[i] = property->base.id;
2182 connector->property_values[i] = init_val;
2183 break;
2184 }
2185 }
2186
2187 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2188 return -EINVAL;
2189 return 0;
2190 }
2191 EXPORT_SYMBOL(drm_connector_attach_property);
2192
2193 int drm_connector_property_set_value(struct drm_connector *connector,
2194 struct drm_property *property, uint64_t value)
2195 {
2196 int i;
2197
2198 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2199 if (connector->property_ids[i] == property->base.id) {
2200 connector->property_values[i] = value;
2201 break;
2202 }
2203 }
2204
2205 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2206 return -EINVAL;
2207 return 0;
2208 }
2209 EXPORT_SYMBOL(drm_connector_property_set_value);
2210
2211 int drm_connector_property_get_value(struct drm_connector *connector,
2212 struct drm_property *property, uint64_t *val)
2213 {
2214 int i;
2215
2216 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2217 if (connector->property_ids[i] == property->base.id) {
2218 *val = connector->property_values[i];
2219 break;
2220 }
2221 }
2222
2223 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2224 return -EINVAL;
2225 return 0;
2226 }
2227 EXPORT_SYMBOL(drm_connector_property_get_value);
2228
2229 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2230 void *data, struct drm_file *file_priv)
2231 {
2232 struct drm_mode_object *obj;
2233 struct drm_mode_get_property *out_resp = data;
2234 struct drm_property *property;
2235 int enum_count = 0;
2236 int blob_count = 0;
2237 int value_count = 0;
2238 int ret = 0, i;
2239 int copied;
2240 struct drm_property_enum *prop_enum;
2241 struct drm_mode_property_enum __user *enum_ptr;
2242 struct drm_property_blob *prop_blob;
2243 uint32_t *blob_id_ptr;
2244 uint64_t __user *values_ptr;
2245 uint32_t __user *blob_length_ptr;
2246
2247 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2248 return -EINVAL;
2249
2250 mutex_lock(&dev->mode_config.mutex);
2251 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2252 if (!obj) {
2253 ret = -EINVAL;
2254 goto done;
2255 }
2256 property = obj_to_property(obj);
2257
2258 if (property->flags & DRM_MODE_PROP_ENUM) {
2259 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2260 enum_count++;
2261 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2262 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2263 blob_count++;
2264 }
2265
2266 value_count = property->num_values;
2267
2268 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2269 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2270 out_resp->flags = property->flags;
2271
2272 if ((out_resp->count_values >= value_count) && value_count) {
2273 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2274 for (i = 0; i < value_count; i++) {
2275 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2276 ret = -EFAULT;
2277 goto done;
2278 }
2279 }
2280 }
2281 out_resp->count_values = value_count;
2282
2283 if (property->flags & DRM_MODE_PROP_ENUM) {
2284 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2285 copied = 0;
2286 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2287 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2288
2289 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2290 ret = -EFAULT;
2291 goto done;
2292 }
2293
2294 if (copy_to_user(&enum_ptr[copied].name,
2295 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2296 ret = -EFAULT;
2297 goto done;
2298 }
2299 copied++;
2300 }
2301 }
2302 out_resp->count_enum_blobs = enum_count;
2303 }
2304
2305 if (property->flags & DRM_MODE_PROP_BLOB) {
2306 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2307 copied = 0;
2308 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2309 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2310
2311 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2312 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2313 ret = -EFAULT;
2314 goto done;
2315 }
2316
2317 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2318 ret = -EFAULT;
2319 goto done;
2320 }
2321
2322 copied++;
2323 }
2324 }
2325 out_resp->count_enum_blobs = blob_count;
2326 }
2327 done:
2328 mutex_unlock(&dev->mode_config.mutex);
2329 return ret;
2330 }
2331
2332 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2333 void *data)
2334 {
2335 struct drm_property_blob *blob;
2336
2337 if (!length || !data)
2338 return NULL;
2339
2340 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2341 if (!blob)
2342 return NULL;
2343
2344 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2345 blob->length = length;
2346
2347 memcpy(blob->data, data, length);
2348
2349 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2350
2351 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2352 return blob;
2353 }
2354
2355 static void drm_property_destroy_blob(struct drm_device *dev,
2356 struct drm_property_blob *blob)
2357 {
2358 drm_mode_object_put(dev, &blob->base);
2359 list_del(&blob->head);
2360 kfree(blob);
2361 }
2362
2363 int drm_mode_getblob_ioctl(struct drm_device *dev,
2364 void *data, struct drm_file *file_priv)
2365 {
2366 struct drm_mode_object *obj;
2367 struct drm_mode_get_blob *out_resp = data;
2368 struct drm_property_blob *blob;
2369 int ret = 0;
2370 void *blob_ptr;
2371
2372 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2373 return -EINVAL;
2374
2375 mutex_lock(&dev->mode_config.mutex);
2376 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2377 if (!obj) {
2378 ret = -EINVAL;
2379 goto done;
2380 }
2381 blob = obj_to_blob(obj);
2382
2383 if (out_resp->length == blob->length) {
2384 blob_ptr = (void *)(unsigned long)out_resp->data;
2385 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2386 ret = -EFAULT;
2387 goto done;
2388 }
2389 }
2390 out_resp->length = blob->length;
2391
2392 done:
2393 mutex_unlock(&dev->mode_config.mutex);
2394 return ret;
2395 }
2396
2397 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2398 struct edid *edid)
2399 {
2400 struct drm_device *dev = connector->dev;
2401 int ret = 0, size;
2402
2403 if (connector->edid_blob_ptr)
2404 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2405
2406 /* Delete edid, when there is none. */
2407 if (!edid) {
2408 connector->edid_blob_ptr = NULL;
2409 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2410 return ret;
2411 }
2412
2413 size = EDID_LENGTH * (1 + edid->extensions);
2414 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2415 size, edid);
2416
2417 ret = drm_connector_property_set_value(connector,
2418 dev->mode_config.edid_property,
2419 connector->edid_blob_ptr->base.id);
2420
2421 return ret;
2422 }
2423 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2424
2425 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2426 void *data, struct drm_file *file_priv)
2427 {
2428 struct drm_mode_connector_set_property *out_resp = data;
2429 struct drm_mode_object *obj;
2430 struct drm_property *property;
2431 struct drm_connector *connector;
2432 int ret = -EINVAL;
2433 int i;
2434
2435 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2436 return -EINVAL;
2437
2438 mutex_lock(&dev->mode_config.mutex);
2439
2440 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2441 if (!obj) {
2442 goto out;
2443 }
2444 connector = obj_to_connector(obj);
2445
2446 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2447 if (connector->property_ids[i] == out_resp->prop_id)
2448 break;
2449 }
2450
2451 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2452 goto out;
2453 }
2454
2455 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2456 if (!obj) {
2457 goto out;
2458 }
2459 property = obj_to_property(obj);
2460
2461 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2462 goto out;
2463
2464 if (property->flags & DRM_MODE_PROP_RANGE) {
2465 if (out_resp->value < property->values[0])
2466 goto out;
2467
2468 if (out_resp->value > property->values[1])
2469 goto out;
2470 } else {
2471 int found = 0;
2472 for (i = 0; i < property->num_values; i++) {
2473 if (property->values[i] == out_resp->value) {
2474 found = 1;
2475 break;
2476 }
2477 }
2478 if (!found) {
2479 goto out;
2480 }
2481 }
2482
2483 /* Do DPMS ourselves */
2484 if (property == connector->dev->mode_config.dpms_property) {
2485 if (connector->funcs->dpms)
2486 (*connector->funcs->dpms)(connector, (int) out_resp->value);
2487 ret = 0;
2488 } else if (connector->funcs->set_property)
2489 ret = connector->funcs->set_property(connector, property, out_resp->value);
2490
2491 /* store the property value if successful */
2492 if (!ret)
2493 drm_connector_property_set_value(connector, property, out_resp->value);
2494 out:
2495 mutex_unlock(&dev->mode_config.mutex);
2496 return ret;
2497 }
2498
2499 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2500 struct drm_encoder *encoder)
2501 {
2502 int i;
2503
2504 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2505 if (connector->encoder_ids[i] == 0) {
2506 connector->encoder_ids[i] = encoder->base.id;
2507 return 0;
2508 }
2509 }
2510 return -ENOMEM;
2511 }
2512 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2513
2514 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2515 struct drm_encoder *encoder)
2516 {
2517 int i;
2518 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2519 if (connector->encoder_ids[i] == encoder->base.id) {
2520 connector->encoder_ids[i] = 0;
2521 if (connector->encoder == encoder)
2522 connector->encoder = NULL;
2523 break;
2524 }
2525 }
2526 }
2527 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2528
2529 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2530 int gamma_size)
2531 {
2532 crtc->gamma_size = gamma_size;
2533
2534 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2535 if (!crtc->gamma_store) {
2536 crtc->gamma_size = 0;
2537 return false;
2538 }
2539
2540 return true;
2541 }
2542 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2543
2544 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2545 void *data, struct drm_file *file_priv)
2546 {
2547 struct drm_mode_crtc_lut *crtc_lut = data;
2548 struct drm_mode_object *obj;
2549 struct drm_crtc *crtc;
2550 void *r_base, *g_base, *b_base;
2551 int size;
2552 int ret = 0;
2553
2554 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2555 return -EINVAL;
2556
2557 mutex_lock(&dev->mode_config.mutex);
2558 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2559 if (!obj) {
2560 ret = -EINVAL;
2561 goto out;
2562 }
2563 crtc = obj_to_crtc(obj);
2564
2565 /* memcpy into gamma store */
2566 if (crtc_lut->gamma_size != crtc->gamma_size) {
2567 ret = -EINVAL;
2568 goto out;
2569 }
2570
2571 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2572 r_base = crtc->gamma_store;
2573 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2574 ret = -EFAULT;
2575 goto out;
2576 }
2577
2578 g_base = r_base + size;
2579 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2580 ret = -EFAULT;
2581 goto out;
2582 }
2583
2584 b_base = g_base + size;
2585 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2586 ret = -EFAULT;
2587 goto out;
2588 }
2589
2590 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
2591
2592 out:
2593 mutex_unlock(&dev->mode_config.mutex);
2594 return ret;
2595
2596 }
2597
2598 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2599 void *data, struct drm_file *file_priv)
2600 {
2601 struct drm_mode_crtc_lut *crtc_lut = data;
2602 struct drm_mode_object *obj;
2603 struct drm_crtc *crtc;
2604 void *r_base, *g_base, *b_base;
2605 int size;
2606 int ret = 0;
2607
2608 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2609 return -EINVAL;
2610
2611 mutex_lock(&dev->mode_config.mutex);
2612 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2613 if (!obj) {
2614 ret = -EINVAL;
2615 goto out;
2616 }
2617 crtc = obj_to_crtc(obj);
2618
2619 /* memcpy into gamma store */
2620 if (crtc_lut->gamma_size != crtc->gamma_size) {
2621 ret = -EINVAL;
2622 goto out;
2623 }
2624
2625 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2626 r_base = crtc->gamma_store;
2627 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2628 ret = -EFAULT;
2629 goto out;
2630 }
2631
2632 g_base = r_base + size;
2633 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2634 ret = -EFAULT;
2635 goto out;
2636 }
2637
2638 b_base = g_base + size;
2639 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2640 ret = -EFAULT;
2641 goto out;
2642 }
2643 out:
2644 mutex_unlock(&dev->mode_config.mutex);
2645 return ret;
2646 }
2647
2648 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2649 void *data, struct drm_file *file_priv)
2650 {
2651 struct drm_mode_crtc_page_flip *page_flip = data;
2652 struct drm_mode_object *obj;
2653 struct drm_crtc *crtc;
2654 struct drm_framebuffer *fb;
2655 struct drm_pending_vblank_event *e = NULL;
2656 unsigned long flags;
2657 int ret = -EINVAL;
2658
2659 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2660 page_flip->reserved != 0)
2661 return -EINVAL;
2662
2663 mutex_lock(&dev->mode_config.mutex);
2664 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2665 if (!obj)
2666 goto out;
2667 crtc = obj_to_crtc(obj);
2668
2669 if (crtc->fb == NULL) {
2670 /* The framebuffer is currently unbound, presumably
2671 * due to a hotplug event, that userspace has not
2672 * yet discovered.
2673 */
2674 ret = -EBUSY;
2675 goto out;
2676 }
2677
2678 if (crtc->funcs->page_flip == NULL)
2679 goto out;
2680
2681 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2682 if (!obj)
2683 goto out;
2684 fb = obj_to_fb(obj);
2685
2686 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2687 ret = -ENOMEM;
2688 spin_lock_irqsave(&dev->event_lock, flags);
2689 if (file_priv->event_space < sizeof e->event) {
2690 spin_unlock_irqrestore(&dev->event_lock, flags);
2691 goto out;
2692 }
2693 file_priv->event_space -= sizeof e->event;
2694 spin_unlock_irqrestore(&dev->event_lock, flags);
2695
2696 e = kzalloc(sizeof *e, GFP_KERNEL);
2697 if (e == NULL) {
2698 spin_lock_irqsave(&dev->event_lock, flags);
2699 file_priv->event_space += sizeof e->event;
2700 spin_unlock_irqrestore(&dev->event_lock, flags);
2701 goto out;
2702 }
2703
2704 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2705 e->event.base.length = sizeof e->event;
2706 e->event.user_data = page_flip->user_data;
2707 e->base.event = &e->event.base;
2708 e->base.file_priv = file_priv;
2709 e->base.destroy =
2710 (void (*) (struct drm_pending_event *)) kfree;
2711 }
2712
2713 ret = crtc->funcs->page_flip(crtc, fb, e);
2714 if (ret) {
2715 spin_lock_irqsave(&dev->event_lock, flags);
2716 file_priv->event_space += sizeof e->event;
2717 spin_unlock_irqrestore(&dev->event_lock, flags);
2718 kfree(e);
2719 }
2720
2721 out:
2722 mutex_unlock(&dev->mode_config.mutex);
2723 return ret;
2724 }
2725
2726 void drm_mode_config_reset(struct drm_device *dev)
2727 {
2728 struct drm_crtc *crtc;
2729 struct drm_encoder *encoder;
2730 struct drm_connector *connector;
2731
2732 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
2733 if (crtc->funcs->reset)
2734 crtc->funcs->reset(crtc);
2735
2736 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
2737 if (encoder->funcs->reset)
2738 encoder->funcs->reset(encoder);
2739
2740 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
2741 if (connector->funcs->reset)
2742 connector->funcs->reset(connector);
2743 }
2744 EXPORT_SYMBOL(drm_mode_config_reset);
2745
2746 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
2747 void *data, struct drm_file *file_priv)
2748 {
2749 struct drm_mode_create_dumb *args = data;
2750
2751 if (!dev->driver->dumb_create)
2752 return -ENOSYS;
2753 return dev->driver->dumb_create(file_priv, dev, args);
2754 }
2755
2756 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
2757 void *data, struct drm_file *file_priv)
2758 {
2759 struct drm_mode_map_dumb *args = data;
2760
2761 /* call driver ioctl to get mmap offset */
2762 if (!dev->driver->dumb_map_offset)
2763 return -ENOSYS;
2764
2765 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
2766 }
2767
2768 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
2769 void *data, struct drm_file *file_priv)
2770 {
2771 struct drm_mode_destroy_dumb *args = data;
2772
2773 if (!dev->driver->dumb_destroy)
2774 return -ENOSYS;
2775
2776 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
2777 }
linux-next