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tree-wide: fix assorted typos all over the place
[linux-2.6.git] / drivers / gpu / drm / drm_crtc.c
blob3f7c500b2115a180e76a773adec19491f0120b06
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 struct drm_conn_prop_enum_list {
129 int type;
130 char *name;
131 int count;
132 };
133
134 /*
135 * Connector and encoder types.
136 */
137 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
138 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
139 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
140 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
141 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
142 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
143 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
144 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
145 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
146 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
147 { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
148 { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
149 { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
150 { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
151 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
152 };
153
154 static struct drm_prop_enum_list drm_encoder_enum_list[] =
155 { { DRM_MODE_ENCODER_NONE, "None" },
156 { DRM_MODE_ENCODER_DAC, "DAC" },
157 { DRM_MODE_ENCODER_TMDS, "TMDS" },
158 { DRM_MODE_ENCODER_LVDS, "LVDS" },
159 { DRM_MODE_ENCODER_TVDAC, "TV" },
160 };
161
162 char *drm_get_encoder_name(struct drm_encoder *encoder)
163 {
164 static char buf[32];
165
166 snprintf(buf, 32, "%s-%d",
167 drm_encoder_enum_list[encoder->encoder_type].name,
168 encoder->base.id);
169 return buf;
170 }
171 EXPORT_SYMBOL(drm_get_encoder_name);
172
173 char *drm_get_connector_name(struct drm_connector *connector)
174 {
175 static char buf[32];
176
177 snprintf(buf, 32, "%s-%d",
178 drm_connector_enum_list[connector->connector_type].name,
179 connector->connector_type_id);
180 return buf;
181 }
182 EXPORT_SYMBOL(drm_get_connector_name);
183
184 char *drm_get_connector_status_name(enum drm_connector_status status)
185 {
186 if (status == connector_status_connected)
187 return "connected";
188 else if (status == connector_status_disconnected)
189 return "disconnected";
190 else
191 return "unknown";
192 }
193
194 /**
195 * drm_mode_object_get - allocate a new identifier
196 * @dev: DRM device
197 * @ptr: object pointer, used to generate unique ID
198 * @type: object type
199 *
200 * LOCKING:
201 *
202 * Create a unique identifier based on @ptr in @dev's identifier space. Used
203 * for tracking modes, CRTCs and connectors.
204 *
205 * RETURNS:
206 * New unique (relative to other objects in @dev) integer identifier for the
207 * object.
208 */
209 static int drm_mode_object_get(struct drm_device *dev,
210 struct drm_mode_object *obj, uint32_t obj_type)
211 {
212 int new_id = 0;
213 int ret;
214
215 again:
216 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
217 DRM_ERROR("Ran out memory getting a mode number\n");
218 return -EINVAL;
219 }
220
221 mutex_lock(&dev->mode_config.idr_mutex);
222 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
223 mutex_unlock(&dev->mode_config.idr_mutex);
224 if (ret == -EAGAIN)
225 goto again;
226
227 obj->id = new_id;
228 obj->type = obj_type;
229 return 0;
230 }
231
232 /**
233 * drm_mode_object_put - free an identifer
234 * @dev: DRM device
235 * @id: ID to free
236 *
237 * LOCKING:
238 * Caller must hold DRM mode_config lock.
239 *
240 * Free @id from @dev's unique identifier pool.
241 */
242 static void drm_mode_object_put(struct drm_device *dev,
243 struct drm_mode_object *object)
244 {
245 mutex_lock(&dev->mode_config.idr_mutex);
246 idr_remove(&dev->mode_config.crtc_idr, object->id);
247 mutex_unlock(&dev->mode_config.idr_mutex);
248 }
249
250 void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type)
251 {
252 struct drm_mode_object *obj = NULL;
253
254 mutex_lock(&dev->mode_config.idr_mutex);
255 obj = idr_find(&dev->mode_config.crtc_idr, id);
256 if (!obj || (obj->type != type) || (obj->id != id))
257 obj = NULL;
258 mutex_unlock(&dev->mode_config.idr_mutex);
259
260 return obj;
261 }
262 EXPORT_SYMBOL(drm_mode_object_find);
263
264 /**
265 * drm_framebuffer_init - initialize a framebuffer
266 * @dev: DRM device
267 *
268 * LOCKING:
269 * Caller must hold mode config lock.
270 *
271 * Allocates an ID for the framebuffer's parent mode object, sets its mode
272 * functions & device file and adds it to the master fd list.
273 *
274 * RETURNS:
275 * Zero on success, error code on failure.
276 */
277 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
278 const struct drm_framebuffer_funcs *funcs)
279 {
280 int ret;
281
282 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
283 if (ret) {
284 return ret;
285 }
286
287 fb->dev = dev;
288 fb->funcs = funcs;
289 dev->mode_config.num_fb++;
290 list_add(&fb->head, &dev->mode_config.fb_list);
291
292 return 0;
293 }
294 EXPORT_SYMBOL(drm_framebuffer_init);
295
296 /**
297 * drm_framebuffer_cleanup - remove a framebuffer object
298 * @fb: framebuffer to remove
299 *
300 * LOCKING:
301 * Caller must hold mode config lock.
302 *
303 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
304 * it, setting it to NULL.
305 */
306 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
307 {
308 struct drm_device *dev = fb->dev;
309 struct drm_crtc *crtc;
310 struct drm_mode_set set;
311 int ret;
312
313 /* remove from any CRTC */
314 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
315 if (crtc->fb == fb) {
316 /* should turn off the crtc */
317 memset(&set, 0, sizeof(struct drm_mode_set));
318 set.crtc = crtc;
319 set.fb = NULL;
320 ret = crtc->funcs->set_config(&set);
321 if (ret)
322 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
323 }
324 }
325
326 drm_mode_object_put(dev, &fb->base);
327 list_del(&fb->head);
328 dev->mode_config.num_fb--;
329 }
330 EXPORT_SYMBOL(drm_framebuffer_cleanup);
331
332 /**
333 * drm_crtc_init - Initialise a new CRTC object
334 * @dev: DRM device
335 * @crtc: CRTC object to init
336 * @funcs: callbacks for the new CRTC
337 *
338 * LOCKING:
339 * Caller must hold mode config lock.
340 *
341 * Inits a new object created as base part of an driver crtc object.
342 */
343 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
344 const struct drm_crtc_funcs *funcs)
345 {
346 crtc->dev = dev;
347 crtc->funcs = funcs;
348
349 mutex_lock(&dev->mode_config.mutex);
350 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
351
352 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
353 dev->mode_config.num_crtc++;
354 mutex_unlock(&dev->mode_config.mutex);
355 }
356 EXPORT_SYMBOL(drm_crtc_init);
357
358 /**
359 * drm_crtc_cleanup - Cleans up the core crtc usage.
360 * @crtc: CRTC to cleanup
361 *
362 * LOCKING:
363 * Caller must hold mode config lock.
364 *
365 * Cleanup @crtc. Removes from drm modesetting space
366 * does NOT free object, caller does that.
367 */
368 void drm_crtc_cleanup(struct drm_crtc *crtc)
369 {
370 struct drm_device *dev = crtc->dev;
371
372 if (crtc->gamma_store) {
373 kfree(crtc->gamma_store);
374 crtc->gamma_store = NULL;
375 }
376
377 drm_mode_object_put(dev, &crtc->base);
378 list_del(&crtc->head);
379 dev->mode_config.num_crtc--;
380 }
381 EXPORT_SYMBOL(drm_crtc_cleanup);
382
383 /**
384 * drm_mode_probed_add - add a mode to a connector's probed mode list
385 * @connector: connector the new mode
386 * @mode: mode data
387 *
388 * LOCKING:
389 * Caller must hold mode config lock.
390 *
391 * Add @mode to @connector's mode list for later use.
392 */
393 void drm_mode_probed_add(struct drm_connector *connector,
394 struct drm_display_mode *mode)
395 {
396 list_add(&mode->head, &connector->probed_modes);
397 }
398 EXPORT_SYMBOL(drm_mode_probed_add);
399
400 /**
401 * drm_mode_remove - remove and free a mode
402 * @connector: connector list to modify
403 * @mode: mode to remove
404 *
405 * LOCKING:
406 * Caller must hold mode config lock.
407 *
408 * Remove @mode from @connector's mode list, then free it.
409 */
410 void drm_mode_remove(struct drm_connector *connector,
411 struct drm_display_mode *mode)
412 {
413 list_del(&mode->head);
414 kfree(mode);
415 }
416 EXPORT_SYMBOL(drm_mode_remove);
417
418 /**
419 * drm_connector_init - Init a preallocated connector
420 * @dev: DRM device
421 * @connector: the connector to init
422 * @funcs: callbacks for this connector
423 * @name: user visible name of the connector
424 *
425 * LOCKING:
426 * Caller must hold @dev's mode_config lock.
427 *
428 * Initialises a preallocated connector. Connectors should be
429 * subclassed as part of driver connector objects.
430 */
431 void drm_connector_init(struct drm_device *dev,
432 struct drm_connector *connector,
433 const struct drm_connector_funcs *funcs,
434 int connector_type)
435 {
436 mutex_lock(&dev->mode_config.mutex);
437
438 connector->dev = dev;
439 connector->funcs = funcs;
440 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
441 connector->connector_type = connector_type;
442 connector->connector_type_id =
443 ++drm_connector_enum_list[connector_type].count; /* TODO */
444 INIT_LIST_HEAD(&connector->user_modes);
445 INIT_LIST_HEAD(&connector->probed_modes);
446 INIT_LIST_HEAD(&connector->modes);
447 connector->edid_blob_ptr = NULL;
448
449 list_add_tail(&connector->head, &dev->mode_config.connector_list);
450 dev->mode_config.num_connector++;
451
452 drm_connector_attach_property(connector,
453 dev->mode_config.edid_property, 0);
454
455 drm_connector_attach_property(connector,
456 dev->mode_config.dpms_property, 0);
457
458 mutex_unlock(&dev->mode_config.mutex);
459 }
460 EXPORT_SYMBOL(drm_connector_init);
461
462 /**
463 * drm_connector_cleanup - cleans up an initialised connector
464 * @connector: connector to cleanup
465 *
466 * LOCKING:
467 * Caller must hold @dev's mode_config lock.
468 *
469 * Cleans up the connector but doesn't free the object.
470 */
471 void drm_connector_cleanup(struct drm_connector *connector)
472 {
473 struct drm_device *dev = connector->dev;
474 struct drm_display_mode *mode, *t;
475
476 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
477 drm_mode_remove(connector, mode);
478
479 list_for_each_entry_safe(mode, t, &connector->modes, head)
480 drm_mode_remove(connector, mode);
481
482 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
483 drm_mode_remove(connector, mode);
484
485 kfree(connector->fb_helper_private);
486 mutex_lock(&dev->mode_config.mutex);
487 drm_mode_object_put(dev, &connector->base);
488 list_del(&connector->head);
489 mutex_unlock(&dev->mode_config.mutex);
490 }
491 EXPORT_SYMBOL(drm_connector_cleanup);
492
493 void drm_encoder_init(struct drm_device *dev,
494 struct drm_encoder *encoder,
495 const struct drm_encoder_funcs *funcs,
496 int encoder_type)
497 {
498 mutex_lock(&dev->mode_config.mutex);
499
500 encoder->dev = dev;
501
502 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
503 encoder->encoder_type = encoder_type;
504 encoder->funcs = funcs;
505
506 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
507 dev->mode_config.num_encoder++;
508
509 mutex_unlock(&dev->mode_config.mutex);
510 }
511 EXPORT_SYMBOL(drm_encoder_init);
512
513 void drm_encoder_cleanup(struct drm_encoder *encoder)
514 {
515 struct drm_device *dev = encoder->dev;
516 mutex_lock(&dev->mode_config.mutex);
517 drm_mode_object_put(dev, &encoder->base);
518 list_del(&encoder->head);
519 mutex_unlock(&dev->mode_config.mutex);
520 }
521 EXPORT_SYMBOL(drm_encoder_cleanup);
522
523 /**
524 * drm_mode_create - create a new display mode
525 * @dev: DRM device
526 *
527 * LOCKING:
528 * Caller must hold DRM mode_config lock.
529 *
530 * Create a new drm_display_mode, give it an ID, and return it.
531 *
532 * RETURNS:
533 * Pointer to new mode on success, NULL on error.
534 */
535 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
536 {
537 struct drm_display_mode *nmode;
538
539 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
540 if (!nmode)
541 return NULL;
542
543 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
544 return nmode;
545 }
546 EXPORT_SYMBOL(drm_mode_create);
547
548 /**
549 * drm_mode_destroy - remove a mode
550 * @dev: DRM device
551 * @mode: mode to remove
552 *
553 * LOCKING:
554 * Caller must hold mode config lock.
555 *
556 * Free @mode's unique identifier, then free it.
557 */
558 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
559 {
560 drm_mode_object_put(dev, &mode->base);
561
562 kfree(mode);
563 }
564 EXPORT_SYMBOL(drm_mode_destroy);
565
566 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
567 {
568 struct drm_property *edid;
569 struct drm_property *dpms;
570 int i;
571
572 /*
573 * Standard properties (apply to all connectors)
574 */
575 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
576 DRM_MODE_PROP_IMMUTABLE,
577 "EDID", 0);
578 dev->mode_config.edid_property = edid;
579
580 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
581 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
582 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
583 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
584 drm_dpms_enum_list[i].name);
585 dev->mode_config.dpms_property = dpms;
586
587 return 0;
588 }
589
590 /**
591 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
592 * @dev: DRM device
593 *
594 * Called by a driver the first time a DVI-I connector is made.
595 */
596 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
597 {
598 struct drm_property *dvi_i_selector;
599 struct drm_property *dvi_i_subconnector;
600 int i;
601
602 if (dev->mode_config.dvi_i_select_subconnector_property)
603 return 0;
604
605 dvi_i_selector =
606 drm_property_create(dev, DRM_MODE_PROP_ENUM,
607 "select subconnector",
608 ARRAY_SIZE(drm_dvi_i_select_enum_list));
609 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
610 drm_property_add_enum(dvi_i_selector, i,
611 drm_dvi_i_select_enum_list[i].type,
612 drm_dvi_i_select_enum_list[i].name);
613 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
614
615 dvi_i_subconnector =
616 drm_property_create(dev, DRM_MODE_PROP_ENUM |
617 DRM_MODE_PROP_IMMUTABLE,
618 "subconnector",
619 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
620 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
621 drm_property_add_enum(dvi_i_subconnector, i,
622 drm_dvi_i_subconnector_enum_list[i].type,
623 drm_dvi_i_subconnector_enum_list[i].name);
624 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
625
626 return 0;
627 }
628 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
629
630 /**
631 * drm_create_tv_properties - create TV specific connector properties
632 * @dev: DRM device
633 * @num_modes: number of different TV formats (modes) supported
634 * @modes: array of pointers to strings containing name of each format
635 *
636 * Called by a driver's TV initialization routine, this function creates
637 * the TV specific connector properties for a given device. Caller is
638 * responsible for allocating a list of format names and passing them to
639 * this routine.
640 */
641 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
642 char *modes[])
643 {
644 struct drm_property *tv_selector;
645 struct drm_property *tv_subconnector;
646 int i;
647
648 if (dev->mode_config.tv_select_subconnector_property)
649 return 0;
650
651 /*
652 * Basic connector properties
653 */
654 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
655 "select subconnector",
656 ARRAY_SIZE(drm_tv_select_enum_list));
657 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
658 drm_property_add_enum(tv_selector, i,
659 drm_tv_select_enum_list[i].type,
660 drm_tv_select_enum_list[i].name);
661 dev->mode_config.tv_select_subconnector_property = tv_selector;
662
663 tv_subconnector =
664 drm_property_create(dev, DRM_MODE_PROP_ENUM |
665 DRM_MODE_PROP_IMMUTABLE, "subconnector",
666 ARRAY_SIZE(drm_tv_subconnector_enum_list));
667 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
668 drm_property_add_enum(tv_subconnector, i,
669 drm_tv_subconnector_enum_list[i].type,
670 drm_tv_subconnector_enum_list[i].name);
671 dev->mode_config.tv_subconnector_property = tv_subconnector;
672
673 /*
674 * Other, TV specific properties: margins & TV modes.
675 */
676 dev->mode_config.tv_left_margin_property =
677 drm_property_create(dev, DRM_MODE_PROP_RANGE,
678 "left margin", 2);
679 dev->mode_config.tv_left_margin_property->values[0] = 0;
680 dev->mode_config.tv_left_margin_property->values[1] = 100;
681
682 dev->mode_config.tv_right_margin_property =
683 drm_property_create(dev, DRM_MODE_PROP_RANGE,
684 "right margin", 2);
685 dev->mode_config.tv_right_margin_property->values[0] = 0;
686 dev->mode_config.tv_right_margin_property->values[1] = 100;
687
688 dev->mode_config.tv_top_margin_property =
689 drm_property_create(dev, DRM_MODE_PROP_RANGE,
690 "top margin", 2);
691 dev->mode_config.tv_top_margin_property->values[0] = 0;
692 dev->mode_config.tv_top_margin_property->values[1] = 100;
693
694 dev->mode_config.tv_bottom_margin_property =
695 drm_property_create(dev, DRM_MODE_PROP_RANGE,
696 "bottom margin", 2);
697 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
698 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
699
700 dev->mode_config.tv_mode_property =
701 drm_property_create(dev, DRM_MODE_PROP_ENUM,
702 "mode", num_modes);
703 for (i = 0; i < num_modes; i++)
704 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
705 i, modes[i]);
706
707 dev->mode_config.tv_brightness_property =
708 drm_property_create(dev, DRM_MODE_PROP_RANGE,
709 "brightness", 2);
710 dev->mode_config.tv_brightness_property->values[0] = 0;
711 dev->mode_config.tv_brightness_property->values[1] = 100;
712
713 dev->mode_config.tv_contrast_property =
714 drm_property_create(dev, DRM_MODE_PROP_RANGE,
715 "contrast", 2);
716 dev->mode_config.tv_contrast_property->values[0] = 0;
717 dev->mode_config.tv_contrast_property->values[1] = 100;
718
719 dev->mode_config.tv_flicker_reduction_property =
720 drm_property_create(dev, DRM_MODE_PROP_RANGE,
721 "flicker reduction", 2);
722 dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
723 dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
724
725 dev->mode_config.tv_overscan_property =
726 drm_property_create(dev, DRM_MODE_PROP_RANGE,
727 "overscan", 2);
728 dev->mode_config.tv_overscan_property->values[0] = 0;
729 dev->mode_config.tv_overscan_property->values[1] = 100;
730
731 dev->mode_config.tv_saturation_property =
732 drm_property_create(dev, DRM_MODE_PROP_RANGE,
733 "saturation", 2);
734 dev->mode_config.tv_saturation_property->values[0] = 0;
735 dev->mode_config.tv_saturation_property->values[1] = 100;
736
737 dev->mode_config.tv_hue_property =
738 drm_property_create(dev, DRM_MODE_PROP_RANGE,
739 "hue", 2);
740 dev->mode_config.tv_hue_property->values[0] = 0;
741 dev->mode_config.tv_hue_property->values[1] = 100;
742
743 return 0;
744 }
745 EXPORT_SYMBOL(drm_mode_create_tv_properties);
746
747 /**
748 * drm_mode_create_scaling_mode_property - create scaling mode property
749 * @dev: DRM device
750 *
751 * Called by a driver the first time it's needed, must be attached to desired
752 * connectors.
753 */
754 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
755 {
756 struct drm_property *scaling_mode;
757 int i;
758
759 if (dev->mode_config.scaling_mode_property)
760 return 0;
761
762 scaling_mode =
763 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
764 ARRAY_SIZE(drm_scaling_mode_enum_list));
765 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
766 drm_property_add_enum(scaling_mode, i,
767 drm_scaling_mode_enum_list[i].type,
768 drm_scaling_mode_enum_list[i].name);
769
770 dev->mode_config.scaling_mode_property = scaling_mode;
771
772 return 0;
773 }
774 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
775
776 /**
777 * drm_mode_create_dithering_property - create dithering property
778 * @dev: DRM device
779 *
780 * Called by a driver the first time it's needed, must be attached to desired
781 * connectors.
782 */
783 int drm_mode_create_dithering_property(struct drm_device *dev)
784 {
785 struct drm_property *dithering_mode;
786 int i;
787
788 if (dev->mode_config.dithering_mode_property)
789 return 0;
790
791 dithering_mode =
792 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
793 ARRAY_SIZE(drm_dithering_mode_enum_list));
794 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
795 drm_property_add_enum(dithering_mode, i,
796 drm_dithering_mode_enum_list[i].type,
797 drm_dithering_mode_enum_list[i].name);
798 dev->mode_config.dithering_mode_property = dithering_mode;
799
800 return 0;
801 }
802 EXPORT_SYMBOL(drm_mode_create_dithering_property);
803
804 /**
805 * drm_mode_config_init - initialize DRM mode_configuration structure
806 * @dev: DRM device
807 *
808 * LOCKING:
809 * None, should happen single threaded at init time.
810 *
811 * Initialize @dev's mode_config structure, used for tracking the graphics
812 * configuration of @dev.
813 */
814 void drm_mode_config_init(struct drm_device *dev)
815 {
816 mutex_init(&dev->mode_config.mutex);
817 mutex_init(&dev->mode_config.idr_mutex);
818 INIT_LIST_HEAD(&dev->mode_config.fb_list);
819 INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
820 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
821 INIT_LIST_HEAD(&dev->mode_config.connector_list);
822 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
823 INIT_LIST_HEAD(&dev->mode_config.property_list);
824 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
825 idr_init(&dev->mode_config.crtc_idr);
826
827 mutex_lock(&dev->mode_config.mutex);
828 drm_mode_create_standard_connector_properties(dev);
829 mutex_unlock(&dev->mode_config.mutex);
830
831 /* Just to be sure */
832 dev->mode_config.num_fb = 0;
833 dev->mode_config.num_connector = 0;
834 dev->mode_config.num_crtc = 0;
835 dev->mode_config.num_encoder = 0;
836 }
837 EXPORT_SYMBOL(drm_mode_config_init);
838
839 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
840 {
841 uint32_t total_objects = 0;
842
843 total_objects += dev->mode_config.num_crtc;
844 total_objects += dev->mode_config.num_connector;
845 total_objects += dev->mode_config.num_encoder;
846
847 if (total_objects == 0)
848 return -EINVAL;
849
850 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
851 if (!group->id_list)
852 return -ENOMEM;
853
854 group->num_crtcs = 0;
855 group->num_connectors = 0;
856 group->num_encoders = 0;
857 return 0;
858 }
859
860 int drm_mode_group_init_legacy_group(struct drm_device *dev,
861 struct drm_mode_group *group)
862 {
863 struct drm_crtc *crtc;
864 struct drm_encoder *encoder;
865 struct drm_connector *connector;
866 int ret;
867
868 if ((ret = drm_mode_group_init(dev, group)))
869 return ret;
870
871 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
872 group->id_list[group->num_crtcs++] = crtc->base.id;
873
874 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
875 group->id_list[group->num_crtcs + group->num_encoders++] =
876 encoder->base.id;
877
878 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
879 group->id_list[group->num_crtcs + group->num_encoders +
880 group->num_connectors++] = connector->base.id;
881
882 return 0;
883 }
884
885 /**
886 * drm_mode_config_cleanup - free up DRM mode_config info
887 * @dev: DRM device
888 *
889 * LOCKING:
890 * Caller must hold mode config lock.
891 *
892 * Free up all the connectors and CRTCs associated with this DRM device, then
893 * free up the framebuffers and associated buffer objects.
894 *
895 * FIXME: cleanup any dangling user buffer objects too
896 */
897 void drm_mode_config_cleanup(struct drm_device *dev)
898 {
899 struct drm_connector *connector, *ot;
900 struct drm_crtc *crtc, *ct;
901 struct drm_encoder *encoder, *enct;
902 struct drm_framebuffer *fb, *fbt;
903 struct drm_property *property, *pt;
904
905 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
906 head) {
907 encoder->funcs->destroy(encoder);
908 }
909
910 list_for_each_entry_safe(connector, ot,
911 &dev->mode_config.connector_list, head) {
912 connector->funcs->destroy(connector);
913 }
914
915 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
916 head) {
917 drm_property_destroy(dev, property);
918 }
919
920 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
921 fb->funcs->destroy(fb);
922 }
923
924 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
925 crtc->funcs->destroy(crtc);
926 }
927
928 }
929 EXPORT_SYMBOL(drm_mode_config_cleanup);
930
931 /**
932 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
933 * @out: drm_mode_modeinfo struct to return to the user
934 * @in: drm_display_mode to use
935 *
936 * LOCKING:
937 * None.
938 *
939 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
940 * the user.
941 */
942 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
943 struct drm_display_mode *in)
944 {
945 out->clock = in->clock;
946 out->hdisplay = in->hdisplay;
947 out->hsync_start = in->hsync_start;
948 out->hsync_end = in->hsync_end;
949 out->htotal = in->htotal;
950 out->hskew = in->hskew;
951 out->vdisplay = in->vdisplay;
952 out->vsync_start = in->vsync_start;
953 out->vsync_end = in->vsync_end;
954 out->vtotal = in->vtotal;
955 out->vscan = in->vscan;
956 out->vrefresh = in->vrefresh;
957 out->flags = in->flags;
958 out->type = in->type;
959 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
960 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
961 }
962
963 /**
964 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
965 * @out: drm_display_mode to return to the user
966 * @in: drm_mode_modeinfo to use
967 *
968 * LOCKING:
969 * None.
970 *
971 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
972 * the caller.
973 */
974 void drm_crtc_convert_umode(struct drm_display_mode *out,
975 struct drm_mode_modeinfo *in)
976 {
977 out->clock = in->clock;
978 out->hdisplay = in->hdisplay;
979 out->hsync_start = in->hsync_start;
980 out->hsync_end = in->hsync_end;
981 out->htotal = in->htotal;
982 out->hskew = in->hskew;
983 out->vdisplay = in->vdisplay;
984 out->vsync_start = in->vsync_start;
985 out->vsync_end = in->vsync_end;
986 out->vtotal = in->vtotal;
987 out->vscan = in->vscan;
988 out->vrefresh = in->vrefresh;
989 out->flags = in->flags;
990 out->type = in->type;
991 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
992 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
993 }
994
995 /**
996 * drm_mode_getresources - get graphics configuration
997 * @inode: inode from the ioctl
998 * @filp: file * from the ioctl
999 * @cmd: cmd from ioctl
1000 * @arg: arg from ioctl
1001 *
1002 * LOCKING:
1003 * Takes mode config lock.
1004 *
1005 * Construct a set of configuration description structures and return
1006 * them to the user, including CRTC, connector and framebuffer configuration.
1007 *
1008 * Called by the user via ioctl.
1009 *
1010 * RETURNS:
1011 * Zero on success, errno on failure.
1012 */
1013 int drm_mode_getresources(struct drm_device *dev, void *data,
1014 struct drm_file *file_priv)
1015 {
1016 struct drm_mode_card_res *card_res = data;
1017 struct list_head *lh;
1018 struct drm_framebuffer *fb;
1019 struct drm_connector *connector;
1020 struct drm_crtc *crtc;
1021 struct drm_encoder *encoder;
1022 int ret = 0;
1023 int connector_count = 0;
1024 int crtc_count = 0;
1025 int fb_count = 0;
1026 int encoder_count = 0;
1027 int copied = 0, i;
1028 uint32_t __user *fb_id;
1029 uint32_t __user *crtc_id;
1030 uint32_t __user *connector_id;
1031 uint32_t __user *encoder_id;
1032 struct drm_mode_group *mode_group;
1033
1034 mutex_lock(&dev->mode_config.mutex);
1035
1036 /*
1037 * For the non-control nodes we need to limit the list of resources
1038 * by IDs in the group list for this node
1039 */
1040 list_for_each(lh, &file_priv->fbs)
1041 fb_count++;
1042
1043 mode_group = &file_priv->master->minor->mode_group;
1044 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1045
1046 list_for_each(lh, &dev->mode_config.crtc_list)
1047 crtc_count++;
1048
1049 list_for_each(lh, &dev->mode_config.connector_list)
1050 connector_count++;
1051
1052 list_for_each(lh, &dev->mode_config.encoder_list)
1053 encoder_count++;
1054 } else {
1055
1056 crtc_count = mode_group->num_crtcs;
1057 connector_count = mode_group->num_connectors;
1058 encoder_count = mode_group->num_encoders;
1059 }
1060
1061 card_res->max_height = dev->mode_config.max_height;
1062 card_res->min_height = dev->mode_config.min_height;
1063 card_res->max_width = dev->mode_config.max_width;
1064 card_res->min_width = dev->mode_config.min_width;
1065
1066 /* handle this in 4 parts */
1067 /* FBs */
1068 if (card_res->count_fbs >= fb_count) {
1069 copied = 0;
1070 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1071 list_for_each_entry(fb, &file_priv->fbs, head) {
1072 if (put_user(fb->base.id, fb_id + copied)) {
1073 ret = -EFAULT;
1074 goto out;
1075 }
1076 copied++;
1077 }
1078 }
1079 card_res->count_fbs = fb_count;
1080
1081 /* CRTCs */
1082 if (card_res->count_crtcs >= crtc_count) {
1083 copied = 0;
1084 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1085 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1086 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1087 head) {
1088 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1089 if (put_user(crtc->base.id, crtc_id + copied)) {
1090 ret = -EFAULT;
1091 goto out;
1092 }
1093 copied++;
1094 }
1095 } else {
1096 for (i = 0; i < mode_group->num_crtcs; i++) {
1097 if (put_user(mode_group->id_list[i],
1098 crtc_id + copied)) {
1099 ret = -EFAULT;
1100 goto out;
1101 }
1102 copied++;
1103 }
1104 }
1105 }
1106 card_res->count_crtcs = crtc_count;
1107
1108 /* Encoders */
1109 if (card_res->count_encoders >= encoder_count) {
1110 copied = 0;
1111 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1112 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1113 list_for_each_entry(encoder,
1114 &dev->mode_config.encoder_list,
1115 head) {
1116 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1117 encoder->base.id);
1118 if (put_user(encoder->base.id, encoder_id +
1119 copied)) {
1120 ret = -EFAULT;
1121 goto out;
1122 }
1123 copied++;
1124 }
1125 } else {
1126 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1127 if (put_user(mode_group->id_list[i],
1128 encoder_id + copied)) {
1129 ret = -EFAULT;
1130 goto out;
1131 }
1132 copied++;
1133 }
1134
1135 }
1136 }
1137 card_res->count_encoders = encoder_count;
1138
1139 /* Connectors */
1140 if (card_res->count_connectors >= connector_count) {
1141 copied = 0;
1142 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1143 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1144 list_for_each_entry(connector,
1145 &dev->mode_config.connector_list,
1146 head) {
1147 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1148 connector->base.id);
1149 if (put_user(connector->base.id,
1150 connector_id + copied)) {
1151 ret = -EFAULT;
1152 goto out;
1153 }
1154 copied++;
1155 }
1156 } else {
1157 int start = mode_group->num_crtcs +
1158 mode_group->num_encoders;
1159 for (i = start; i < start + mode_group->num_connectors; i++) {
1160 if (put_user(mode_group->id_list[i],
1161 connector_id + copied)) {
1162 ret = -EFAULT;
1163 goto out;
1164 }
1165 copied++;
1166 }
1167 }
1168 }
1169 card_res->count_connectors = connector_count;
1170
1171 DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1172 card_res->count_connectors, card_res->count_encoders);
1173
1174 out:
1175 mutex_unlock(&dev->mode_config.mutex);
1176 return ret;
1177 }
1178
1179 /**
1180 * drm_mode_getcrtc - get CRTC configuration
1181 * @inode: inode from the ioctl
1182 * @filp: file * from the ioctl
1183 * @cmd: cmd from ioctl
1184 * @arg: arg from ioctl
1185 *
1186 * LOCKING:
1187 * Caller? (FIXME)
1188 *
1189 * Construct a CRTC configuration structure to return to the user.
1190 *
1191 * Called by the user via ioctl.
1192 *
1193 * RETURNS:
1194 * Zero on success, errno on failure.
1195 */
1196 int drm_mode_getcrtc(struct drm_device *dev,
1197 void *data, struct drm_file *file_priv)
1198 {
1199 struct drm_mode_crtc *crtc_resp = data;
1200 struct drm_crtc *crtc;
1201 struct drm_mode_object *obj;
1202 int ret = 0;
1203
1204 mutex_lock(&dev->mode_config.mutex);
1205
1206 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1207 DRM_MODE_OBJECT_CRTC);
1208 if (!obj) {
1209 ret = -EINVAL;
1210 goto out;
1211 }
1212 crtc = obj_to_crtc(obj);
1213
1214 crtc_resp->x = crtc->x;
1215 crtc_resp->y = crtc->y;
1216 crtc_resp->gamma_size = crtc->gamma_size;
1217 if (crtc->fb)
1218 crtc_resp->fb_id = crtc->fb->base.id;
1219 else
1220 crtc_resp->fb_id = 0;
1221
1222 if (crtc->enabled) {
1223
1224 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1225 crtc_resp->mode_valid = 1;
1226
1227 } else {
1228 crtc_resp->mode_valid = 0;
1229 }
1230
1231 out:
1232 mutex_unlock(&dev->mode_config.mutex);
1233 return ret;
1234 }
1235
1236 /**
1237 * drm_mode_getconnector - get connector configuration
1238 * @inode: inode from the ioctl
1239 * @filp: file * from the ioctl
1240 * @cmd: cmd from ioctl
1241 * @arg: arg from ioctl
1242 *
1243 * LOCKING:
1244 * Caller? (FIXME)
1245 *
1246 * Construct a connector configuration structure to return to the user.
1247 *
1248 * Called by the user via ioctl.
1249 *
1250 * RETURNS:
1251 * Zero on success, errno on failure.
1252 */
1253 int drm_mode_getconnector(struct drm_device *dev, void *data,
1254 struct drm_file *file_priv)
1255 {
1256 struct drm_mode_get_connector *out_resp = data;
1257 struct drm_mode_object *obj;
1258 struct drm_connector *connector;
1259 struct drm_display_mode *mode;
1260 int mode_count = 0;
1261 int props_count = 0;
1262 int encoders_count = 0;
1263 int ret = 0;
1264 int copied = 0;
1265 int i;
1266 struct drm_mode_modeinfo u_mode;
1267 struct drm_mode_modeinfo __user *mode_ptr;
1268 uint32_t __user *prop_ptr;
1269 uint64_t __user *prop_values;
1270 uint32_t __user *encoder_ptr;
1271
1272 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1273
1274 DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1275
1276 mutex_lock(&dev->mode_config.mutex);
1277
1278 obj = drm_mode_object_find(dev, out_resp->connector_id,
1279 DRM_MODE_OBJECT_CONNECTOR);
1280 if (!obj) {
1281 ret = -EINVAL;
1282 goto out;
1283 }
1284 connector = obj_to_connector(obj);
1285
1286 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1287 if (connector->property_ids[i] != 0) {
1288 props_count++;
1289 }
1290 }
1291
1292 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1293 if (connector->encoder_ids[i] != 0) {
1294 encoders_count++;
1295 }
1296 }
1297
1298 if (out_resp->count_modes == 0) {
1299 connector->funcs->fill_modes(connector,
1300 dev->mode_config.max_width,
1301 dev->mode_config.max_height);
1302 }
1303
1304 /* delayed so we get modes regardless of pre-fill_modes state */
1305 list_for_each_entry(mode, &connector->modes, head)
1306 mode_count++;
1307
1308 out_resp->connector_id = connector->base.id;
1309 out_resp->connector_type = connector->connector_type;
1310 out_resp->connector_type_id = connector->connector_type_id;
1311 out_resp->mm_width = connector->display_info.width_mm;
1312 out_resp->mm_height = connector->display_info.height_mm;
1313 out_resp->subpixel = connector->display_info.subpixel_order;
1314 out_resp->connection = connector->status;
1315 if (connector->encoder)
1316 out_resp->encoder_id = connector->encoder->base.id;
1317 else
1318 out_resp->encoder_id = 0;
1319
1320 /*
1321 * This ioctl is called twice, once to determine how much space is
1322 * needed, and the 2nd time to fill it.
1323 */
1324 if ((out_resp->count_modes >= mode_count) && mode_count) {
1325 copied = 0;
1326 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1327 list_for_each_entry(mode, &connector->modes, head) {
1328 drm_crtc_convert_to_umode(&u_mode, mode);
1329 if (copy_to_user(mode_ptr + copied,
1330 &u_mode, sizeof(u_mode))) {
1331 ret = -EFAULT;
1332 goto out;
1333 }
1334 copied++;
1335 }
1336 }
1337 out_resp->count_modes = mode_count;
1338
1339 if ((out_resp->count_props >= props_count) && props_count) {
1340 copied = 0;
1341 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1342 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1343 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1344 if (connector->property_ids[i] != 0) {
1345 if (put_user(connector->property_ids[i],
1346 prop_ptr + copied)) {
1347 ret = -EFAULT;
1348 goto out;
1349 }
1350
1351 if (put_user(connector->property_values[i],
1352 prop_values + copied)) {
1353 ret = -EFAULT;
1354 goto out;
1355 }
1356 copied++;
1357 }
1358 }
1359 }
1360 out_resp->count_props = props_count;
1361
1362 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1363 copied = 0;
1364 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1365 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1366 if (connector->encoder_ids[i] != 0) {
1367 if (put_user(connector->encoder_ids[i],
1368 encoder_ptr + copied)) {
1369 ret = -EFAULT;
1370 goto out;
1371 }
1372 copied++;
1373 }
1374 }
1375 }
1376 out_resp->count_encoders = encoders_count;
1377
1378 out:
1379 mutex_unlock(&dev->mode_config.mutex);
1380 return ret;
1381 }
1382
1383 int drm_mode_getencoder(struct drm_device *dev, void *data,
1384 struct drm_file *file_priv)
1385 {
1386 struct drm_mode_get_encoder *enc_resp = data;
1387 struct drm_mode_object *obj;
1388 struct drm_encoder *encoder;
1389 int ret = 0;
1390
1391 mutex_lock(&dev->mode_config.mutex);
1392 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1393 DRM_MODE_OBJECT_ENCODER);
1394 if (!obj) {
1395 ret = -EINVAL;
1396 goto out;
1397 }
1398 encoder = obj_to_encoder(obj);
1399
1400 if (encoder->crtc)
1401 enc_resp->crtc_id = encoder->crtc->base.id;
1402 else
1403 enc_resp->crtc_id = 0;
1404 enc_resp->encoder_type = encoder->encoder_type;
1405 enc_resp->encoder_id = encoder->base.id;
1406 enc_resp->possible_crtcs = encoder->possible_crtcs;
1407 enc_resp->possible_clones = encoder->possible_clones;
1408
1409 out:
1410 mutex_unlock(&dev->mode_config.mutex);
1411 return ret;
1412 }
1413
1414 /**
1415 * drm_mode_setcrtc - set CRTC configuration
1416 * @inode: inode from the ioctl
1417 * @filp: file * from the ioctl
1418 * @cmd: cmd from ioctl
1419 * @arg: arg from ioctl
1420 *
1421 * LOCKING:
1422 * Caller? (FIXME)
1423 *
1424 * Build a new CRTC configuration based on user request.
1425 *
1426 * Called by the user via ioctl.
1427 *
1428 * RETURNS:
1429 * Zero on success, errno on failure.
1430 */
1431 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1432 struct drm_file *file_priv)
1433 {
1434 struct drm_mode_config *config = &dev->mode_config;
1435 struct drm_mode_crtc *crtc_req = data;
1436 struct drm_mode_object *obj;
1437 struct drm_crtc *crtc, *crtcfb;
1438 struct drm_connector **connector_set = NULL, *connector;
1439 struct drm_framebuffer *fb = NULL;
1440 struct drm_display_mode *mode = NULL;
1441 struct drm_mode_set set;
1442 uint32_t __user *set_connectors_ptr;
1443 int ret = 0;
1444 int i;
1445
1446 mutex_lock(&dev->mode_config.mutex);
1447 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1448 DRM_MODE_OBJECT_CRTC);
1449 if (!obj) {
1450 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1451 ret = -EINVAL;
1452 goto out;
1453 }
1454 crtc = obj_to_crtc(obj);
1455
1456 if (crtc_req->mode_valid) {
1457 /* If we have a mode we need a framebuffer. */
1458 /* If we pass -1, set the mode with the currently bound fb */
1459 if (crtc_req->fb_id == -1) {
1460 list_for_each_entry(crtcfb,
1461 &dev->mode_config.crtc_list, head) {
1462 if (crtcfb == crtc) {
1463 DRM_DEBUG_KMS("Using current fb for "
1464 "setmode\n");
1465 fb = crtc->fb;
1466 }
1467 }
1468 } else {
1469 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1470 DRM_MODE_OBJECT_FB);
1471 if (!obj) {
1472 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1473 crtc_req->fb_id);
1474 ret = -EINVAL;
1475 goto out;
1476 }
1477 fb = obj_to_fb(obj);
1478 }
1479
1480 mode = drm_mode_create(dev);
1481 drm_crtc_convert_umode(mode, &crtc_req->mode);
1482 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1483 }
1484
1485 if (crtc_req->count_connectors == 0 && mode) {
1486 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1487 ret = -EINVAL;
1488 goto out;
1489 }
1490
1491 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1492 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1493 crtc_req->count_connectors);
1494 ret = -EINVAL;
1495 goto out;
1496 }
1497
1498 if (crtc_req->count_connectors > 0) {
1499 u32 out_id;
1500
1501 /* Avoid unbounded kernel memory allocation */
1502 if (crtc_req->count_connectors > config->num_connector) {
1503 ret = -EINVAL;
1504 goto out;
1505 }
1506
1507 connector_set = kmalloc(crtc_req->count_connectors *
1508 sizeof(struct drm_connector *),
1509 GFP_KERNEL);
1510 if (!connector_set) {
1511 ret = -ENOMEM;
1512 goto out;
1513 }
1514
1515 for (i = 0; i < crtc_req->count_connectors; i++) {
1516 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1517 if (get_user(out_id, &set_connectors_ptr[i])) {
1518 ret = -EFAULT;
1519 goto out;
1520 }
1521
1522 obj = drm_mode_object_find(dev, out_id,
1523 DRM_MODE_OBJECT_CONNECTOR);
1524 if (!obj) {
1525 DRM_DEBUG_KMS("Connector id %d unknown\n",
1526 out_id);
1527 ret = -EINVAL;
1528 goto out;
1529 }
1530 connector = obj_to_connector(obj);
1531
1532 connector_set[i] = connector;
1533 }
1534 }
1535
1536 set.crtc = crtc;
1537 set.x = crtc_req->x;
1538 set.y = crtc_req->y;
1539 set.mode = mode;
1540 set.connectors = connector_set;
1541 set.num_connectors = crtc_req->count_connectors;
1542 set.fb = fb;
1543 ret = crtc->funcs->set_config(&set);
1544
1545 out:
1546 kfree(connector_set);
1547 mutex_unlock(&dev->mode_config.mutex);
1548 return ret;
1549 }
1550
1551 int drm_mode_cursor_ioctl(struct drm_device *dev,
1552 void *data, struct drm_file *file_priv)
1553 {
1554 struct drm_mode_cursor *req = data;
1555 struct drm_mode_object *obj;
1556 struct drm_crtc *crtc;
1557 int ret = 0;
1558
1559 if (!req->flags) {
1560 DRM_ERROR("no operation set\n");
1561 return -EINVAL;
1562 }
1563
1564 mutex_lock(&dev->mode_config.mutex);
1565 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1566 if (!obj) {
1567 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1568 ret = -EINVAL;
1569 goto out;
1570 }
1571 crtc = obj_to_crtc(obj);
1572
1573 if (req->flags & DRM_MODE_CURSOR_BO) {
1574 if (!crtc->funcs->cursor_set) {
1575 DRM_ERROR("crtc does not support cursor\n");
1576 ret = -ENXIO;
1577 goto out;
1578 }
1579 /* Turns off the cursor if handle is 0 */
1580 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1581 req->width, req->height);
1582 }
1583
1584 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1585 if (crtc->funcs->cursor_move) {
1586 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1587 } else {
1588 DRM_ERROR("crtc does not support cursor\n");
1589 ret = -EFAULT;
1590 goto out;
1591 }
1592 }
1593 out:
1594 mutex_unlock(&dev->mode_config.mutex);
1595 return ret;
1596 }
1597
1598 /**
1599 * drm_mode_addfb - add an FB to the graphics configuration
1600 * @inode: inode from the ioctl
1601 * @filp: file * from the ioctl
1602 * @cmd: cmd from ioctl
1603 * @arg: arg from ioctl
1604 *
1605 * LOCKING:
1606 * Takes mode config lock.
1607 *
1608 * Add a new FB to the specified CRTC, given a user request.
1609 *
1610 * Called by the user via ioctl.
1611 *
1612 * RETURNS:
1613 * Zero on success, errno on failure.
1614 */
1615 int drm_mode_addfb(struct drm_device *dev,
1616 void *data, struct drm_file *file_priv)
1617 {
1618 struct drm_mode_fb_cmd *r = data;
1619 struct drm_mode_config *config = &dev->mode_config;
1620 struct drm_framebuffer *fb;
1621 int ret = 0;
1622
1623 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1624 DRM_ERROR("mode new framebuffer width not within limits\n");
1625 return -EINVAL;
1626 }
1627 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1628 DRM_ERROR("mode new framebuffer height not within limits\n");
1629 return -EINVAL;
1630 }
1631
1632 mutex_lock(&dev->mode_config.mutex);
1633
1634 /* TODO check buffer is sufficently large */
1635 /* TODO setup destructor callback */
1636
1637 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1638 if (!fb) {
1639 DRM_ERROR("could not create framebuffer\n");
1640 ret = -EINVAL;
1641 goto out;
1642 }
1643
1644 r->fb_id = fb->base.id;
1645 list_add(&fb->filp_head, &file_priv->fbs);
1646
1647 out:
1648 mutex_unlock(&dev->mode_config.mutex);
1649 return ret;
1650 }
1651
1652 /**
1653 * drm_mode_rmfb - remove an FB from the configuration
1654 * @inode: inode from the ioctl
1655 * @filp: file * from the ioctl
1656 * @cmd: cmd from ioctl
1657 * @arg: arg from ioctl
1658 *
1659 * LOCKING:
1660 * Takes mode config lock.
1661 *
1662 * Remove the FB specified by the user.
1663 *
1664 * Called by the user via ioctl.
1665 *
1666 * RETURNS:
1667 * Zero on success, errno on failure.
1668 */
1669 int drm_mode_rmfb(struct drm_device *dev,
1670 void *data, struct drm_file *file_priv)
1671 {
1672 struct drm_mode_object *obj;
1673 struct drm_framebuffer *fb = NULL;
1674 struct drm_framebuffer *fbl = NULL;
1675 uint32_t *id = data;
1676 int ret = 0;
1677 int found = 0;
1678
1679 mutex_lock(&dev->mode_config.mutex);
1680 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1681 /* TODO check that we realy get a framebuffer back. */
1682 if (!obj) {
1683 DRM_ERROR("mode invalid framebuffer id\n");
1684 ret = -EINVAL;
1685 goto out;
1686 }
1687 fb = obj_to_fb(obj);
1688
1689 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1690 if (fb == fbl)
1691 found = 1;
1692
1693 if (!found) {
1694 DRM_ERROR("tried to remove a fb that we didn't own\n");
1695 ret = -EINVAL;
1696 goto out;
1697 }
1698
1699 /* TODO release all crtc connected to the framebuffer */
1700 /* TODO unhock the destructor from the buffer object */
1701
1702 list_del(&fb->filp_head);
1703 fb->funcs->destroy(fb);
1704
1705 out:
1706 mutex_unlock(&dev->mode_config.mutex);
1707 return ret;
1708 }
1709
1710 /**
1711 * drm_mode_getfb - get FB info
1712 * @inode: inode from the ioctl
1713 * @filp: file * from the ioctl
1714 * @cmd: cmd from ioctl
1715 * @arg: arg from ioctl
1716 *
1717 * LOCKING:
1718 * Caller? (FIXME)
1719 *
1720 * Lookup the FB given its ID and return info about it.
1721 *
1722 * Called by the user via ioctl.
1723 *
1724 * RETURNS:
1725 * Zero on success, errno on failure.
1726 */
1727 int drm_mode_getfb(struct drm_device *dev,
1728 void *data, struct drm_file *file_priv)
1729 {
1730 struct drm_mode_fb_cmd *r = data;
1731 struct drm_mode_object *obj;
1732 struct drm_framebuffer *fb;
1733 int ret = 0;
1734
1735 mutex_lock(&dev->mode_config.mutex);
1736 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1737 if (!obj) {
1738 DRM_ERROR("invalid framebuffer id\n");
1739 ret = -EINVAL;
1740 goto out;
1741 }
1742 fb = obj_to_fb(obj);
1743
1744 r->height = fb->height;
1745 r->width = fb->width;
1746 r->depth = fb->depth;
1747 r->bpp = fb->bits_per_pixel;
1748 r->pitch = fb->pitch;
1749 fb->funcs->create_handle(fb, file_priv, &r->handle);
1750
1751 out:
1752 mutex_unlock(&dev->mode_config.mutex);
1753 return ret;
1754 }
1755
1756 /**
1757 * drm_fb_release - remove and free the FBs on this file
1758 * @filp: file * from the ioctl
1759 *
1760 * LOCKING:
1761 * Takes mode config lock.
1762 *
1763 * Destroy all the FBs associated with @filp.
1764 *
1765 * Called by the user via ioctl.
1766 *
1767 * RETURNS:
1768 * Zero on success, errno on failure.
1769 */
1770 void drm_fb_release(struct drm_file *priv)
1771 {
1772 struct drm_device *dev = priv->minor->dev;
1773 struct drm_framebuffer *fb, *tfb;
1774
1775 mutex_lock(&dev->mode_config.mutex);
1776 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1777 list_del(&fb->filp_head);
1778 fb->funcs->destroy(fb);
1779 }
1780 mutex_unlock(&dev->mode_config.mutex);
1781 }
1782
1783 /**
1784 * drm_mode_attachmode - add a mode to the user mode list
1785 * @dev: DRM device
1786 * @connector: connector to add the mode to
1787 * @mode: mode to add
1788 *
1789 * Add @mode to @connector's user mode list.
1790 */
1791 static int drm_mode_attachmode(struct drm_device *dev,
1792 struct drm_connector *connector,
1793 struct drm_display_mode *mode)
1794 {
1795 int ret = 0;
1796
1797 list_add_tail(&mode->head, &connector->user_modes);
1798 return ret;
1799 }
1800
1801 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1802 struct drm_display_mode *mode)
1803 {
1804 struct drm_connector *connector;
1805 int ret = 0;
1806 struct drm_display_mode *dup_mode;
1807 int need_dup = 0;
1808 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1809 if (!connector->encoder)
1810 break;
1811 if (connector->encoder->crtc == crtc) {
1812 if (need_dup)
1813 dup_mode = drm_mode_duplicate(dev, mode);
1814 else
1815 dup_mode = mode;
1816 ret = drm_mode_attachmode(dev, connector, dup_mode);
1817 if (ret)
1818 return ret;
1819 need_dup = 1;
1820 }
1821 }
1822 return 0;
1823 }
1824 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1825
1826 static int drm_mode_detachmode(struct drm_device *dev,
1827 struct drm_connector *connector,
1828 struct drm_display_mode *mode)
1829 {
1830 int found = 0;
1831 int ret = 0;
1832 struct drm_display_mode *match_mode, *t;
1833
1834 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1835 if (drm_mode_equal(match_mode, mode)) {
1836 list_del(&match_mode->head);
1837 drm_mode_destroy(dev, match_mode);
1838 found = 1;
1839 break;
1840 }
1841 }
1842
1843 if (!found)
1844 ret = -EINVAL;
1845
1846 return ret;
1847 }
1848
1849 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1850 {
1851 struct drm_connector *connector;
1852
1853 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1854 drm_mode_detachmode(dev, connector, mode);
1855 }
1856 return 0;
1857 }
1858 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1859
1860 /**
1861 * drm_fb_attachmode - Attach a user mode to an connector
1862 * @inode: inode from the ioctl
1863 * @filp: file * from the ioctl
1864 * @cmd: cmd from ioctl
1865 * @arg: arg from ioctl
1866 *
1867 * This attaches a user specified mode to an connector.
1868 * Called by the user via ioctl.
1869 *
1870 * RETURNS:
1871 * Zero on success, errno on failure.
1872 */
1873 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1874 void *data, struct drm_file *file_priv)
1875 {
1876 struct drm_mode_mode_cmd *mode_cmd = data;
1877 struct drm_connector *connector;
1878 struct drm_display_mode *mode;
1879 struct drm_mode_object *obj;
1880 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1881 int ret = 0;
1882
1883 mutex_lock(&dev->mode_config.mutex);
1884
1885 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1886 if (!obj) {
1887 ret = -EINVAL;
1888 goto out;
1889 }
1890 connector = obj_to_connector(obj);
1891
1892 mode = drm_mode_create(dev);
1893 if (!mode) {
1894 ret = -ENOMEM;
1895 goto out;
1896 }
1897
1898 drm_crtc_convert_umode(mode, umode);
1899
1900 ret = drm_mode_attachmode(dev, connector, mode);
1901 out:
1902 mutex_unlock(&dev->mode_config.mutex);
1903 return ret;
1904 }
1905
1906
1907 /**
1908 * drm_fb_detachmode - Detach a user specified mode from an connector
1909 * @inode: inode from the ioctl
1910 * @filp: file * from the ioctl
1911 * @cmd: cmd from ioctl
1912 * @arg: arg from ioctl
1913 *
1914 * Called by the user via ioctl.
1915 *
1916 * RETURNS:
1917 * Zero on success, errno on failure.
1918 */
1919 int drm_mode_detachmode_ioctl(struct drm_device *dev,
1920 void *data, struct drm_file *file_priv)
1921 {
1922 struct drm_mode_object *obj;
1923 struct drm_mode_mode_cmd *mode_cmd = data;
1924 struct drm_connector *connector;
1925 struct drm_display_mode mode;
1926 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1927 int ret = 0;
1928
1929 mutex_lock(&dev->mode_config.mutex);
1930
1931 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1932 if (!obj) {
1933 ret = -EINVAL;
1934 goto out;
1935 }
1936 connector = obj_to_connector(obj);
1937
1938 drm_crtc_convert_umode(&mode, umode);
1939 ret = drm_mode_detachmode(dev, connector, &mode);
1940 out:
1941 mutex_unlock(&dev->mode_config.mutex);
1942 return ret;
1943 }
1944
1945 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1946 const char *name, int num_values)
1947 {
1948 struct drm_property *property = NULL;
1949
1950 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
1951 if (!property)
1952 return NULL;
1953
1954 if (num_values) {
1955 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
1956 if (!property->values)
1957 goto fail;
1958 }
1959
1960 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
1961 property->flags = flags;
1962 property->num_values = num_values;
1963 INIT_LIST_HEAD(&property->enum_blob_list);
1964
1965 if (name)
1966 strncpy(property->name, name, DRM_PROP_NAME_LEN);
1967
1968 list_add_tail(&property->head, &dev->mode_config.property_list);
1969 return property;
1970 fail:
1971 kfree(property);
1972 return NULL;
1973 }
1974 EXPORT_SYMBOL(drm_property_create);
1975
1976 int drm_property_add_enum(struct drm_property *property, int index,
1977 uint64_t value, const char *name)
1978 {
1979 struct drm_property_enum *prop_enum;
1980
1981 if (!(property->flags & DRM_MODE_PROP_ENUM))
1982 return -EINVAL;
1983
1984 if (!list_empty(&property->enum_blob_list)) {
1985 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
1986 if (prop_enum->value == value) {
1987 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1988 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1989 return 0;
1990 }
1991 }
1992 }
1993
1994 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
1995 if (!prop_enum)
1996 return -ENOMEM;
1997
1998 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1999 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2000 prop_enum->value = value;
2001
2002 property->values[index] = value;
2003 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2004 return 0;
2005 }
2006 EXPORT_SYMBOL(drm_property_add_enum);
2007
2008 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2009 {
2010 struct drm_property_enum *prop_enum, *pt;
2011
2012 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2013 list_del(&prop_enum->head);
2014 kfree(prop_enum);
2015 }
2016
2017 if (property->num_values)
2018 kfree(property->values);
2019 drm_mode_object_put(dev, &property->base);
2020 list_del(&property->head);
2021 kfree(property);
2022 }
2023 EXPORT_SYMBOL(drm_property_destroy);
2024
2025 int drm_connector_attach_property(struct drm_connector *connector,
2026 struct drm_property *property, uint64_t init_val)
2027 {
2028 int i;
2029
2030 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2031 if (connector->property_ids[i] == 0) {
2032 connector->property_ids[i] = property->base.id;
2033 connector->property_values[i] = init_val;
2034 break;
2035 }
2036 }
2037
2038 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2039 return -EINVAL;
2040 return 0;
2041 }
2042 EXPORT_SYMBOL(drm_connector_attach_property);
2043
2044 int drm_connector_property_set_value(struct drm_connector *connector,
2045 struct drm_property *property, uint64_t value)
2046 {
2047 int i;
2048
2049 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2050 if (connector->property_ids[i] == property->base.id) {
2051 connector->property_values[i] = value;
2052 break;
2053 }
2054 }
2055
2056 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2057 return -EINVAL;
2058 return 0;
2059 }
2060 EXPORT_SYMBOL(drm_connector_property_set_value);
2061
2062 int drm_connector_property_get_value(struct drm_connector *connector,
2063 struct drm_property *property, uint64_t *val)
2064 {
2065 int i;
2066
2067 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2068 if (connector->property_ids[i] == property->base.id) {
2069 *val = connector->property_values[i];
2070 break;
2071 }
2072 }
2073
2074 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2075 return -EINVAL;
2076 return 0;
2077 }
2078 EXPORT_SYMBOL(drm_connector_property_get_value);
2079
2080 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2081 void *data, struct drm_file *file_priv)
2082 {
2083 struct drm_mode_object *obj;
2084 struct drm_mode_get_property *out_resp = data;
2085 struct drm_property *property;
2086 int enum_count = 0;
2087 int blob_count = 0;
2088 int value_count = 0;
2089 int ret = 0, i;
2090 int copied;
2091 struct drm_property_enum *prop_enum;
2092 struct drm_mode_property_enum __user *enum_ptr;
2093 struct drm_property_blob *prop_blob;
2094 uint32_t *blob_id_ptr;
2095 uint64_t __user *values_ptr;
2096 uint32_t __user *blob_length_ptr;
2097
2098 mutex_lock(&dev->mode_config.mutex);
2099 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2100 if (!obj) {
2101 ret = -EINVAL;
2102 goto done;
2103 }
2104 property = obj_to_property(obj);
2105
2106 if (property->flags & DRM_MODE_PROP_ENUM) {
2107 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2108 enum_count++;
2109 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2110 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2111 blob_count++;
2112 }
2113
2114 value_count = property->num_values;
2115
2116 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2117 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2118 out_resp->flags = property->flags;
2119
2120 if ((out_resp->count_values >= value_count) && value_count) {
2121 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2122 for (i = 0; i < value_count; i++) {
2123 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2124 ret = -EFAULT;
2125 goto done;
2126 }
2127 }
2128 }
2129 out_resp->count_values = value_count;
2130
2131 if (property->flags & DRM_MODE_PROP_ENUM) {
2132 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2133 copied = 0;
2134 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2135 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2136
2137 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2138 ret = -EFAULT;
2139 goto done;
2140 }
2141
2142 if (copy_to_user(&enum_ptr[copied].name,
2143 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2144 ret = -EFAULT;
2145 goto done;
2146 }
2147 copied++;
2148 }
2149 }
2150 out_resp->count_enum_blobs = enum_count;
2151 }
2152
2153 if (property->flags & DRM_MODE_PROP_BLOB) {
2154 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2155 copied = 0;
2156 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2157 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2158
2159 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2160 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2161 ret = -EFAULT;
2162 goto done;
2163 }
2164
2165 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2166 ret = -EFAULT;
2167 goto done;
2168 }
2169
2170 copied++;
2171 }
2172 }
2173 out_resp->count_enum_blobs = blob_count;
2174 }
2175 done:
2176 mutex_unlock(&dev->mode_config.mutex);
2177 return ret;
2178 }
2179
2180 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2181 void *data)
2182 {
2183 struct drm_property_blob *blob;
2184
2185 if (!length || !data)
2186 return NULL;
2187
2188 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2189 if (!blob)
2190 return NULL;
2191
2192 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2193 blob->length = length;
2194
2195 memcpy(blob->data, data, length);
2196
2197 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2198
2199 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2200 return blob;
2201 }
2202
2203 static void drm_property_destroy_blob(struct drm_device *dev,
2204 struct drm_property_blob *blob)
2205 {
2206 drm_mode_object_put(dev, &blob->base);
2207 list_del(&blob->head);
2208 kfree(blob);
2209 }
2210
2211 int drm_mode_getblob_ioctl(struct drm_device *dev,
2212 void *data, struct drm_file *file_priv)
2213 {
2214 struct drm_mode_object *obj;
2215 struct drm_mode_get_blob *out_resp = data;
2216 struct drm_property_blob *blob;
2217 int ret = 0;
2218 void *blob_ptr;
2219
2220 mutex_lock(&dev->mode_config.mutex);
2221 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2222 if (!obj) {
2223 ret = -EINVAL;
2224 goto done;
2225 }
2226 blob = obj_to_blob(obj);
2227
2228 if (out_resp->length == blob->length) {
2229 blob_ptr = (void *)(unsigned long)out_resp->data;
2230 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2231 ret = -EFAULT;
2232 goto done;
2233 }
2234 }
2235 out_resp->length = blob->length;
2236
2237 done:
2238 mutex_unlock(&dev->mode_config.mutex);
2239 return ret;
2240 }
2241
2242 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2243 struct edid *edid)
2244 {
2245 struct drm_device *dev = connector->dev;
2246 int ret = 0;
2247
2248 if (connector->edid_blob_ptr)
2249 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2250
2251 /* Delete edid, when there is none. */
2252 if (!edid) {
2253 connector->edid_blob_ptr = NULL;
2254 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2255 return ret;
2256 }
2257
2258 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
2259
2260 ret = drm_connector_property_set_value(connector,
2261 dev->mode_config.edid_property,
2262 connector->edid_blob_ptr->base.id);
2263
2264 return ret;
2265 }
2266 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2267
2268 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2269 void *data, struct drm_file *file_priv)
2270 {
2271 struct drm_mode_connector_set_property *out_resp = data;
2272 struct drm_mode_object *obj;
2273 struct drm_property *property;
2274 struct drm_connector *connector;
2275 int ret = -EINVAL;
2276 int i;
2277
2278 mutex_lock(&dev->mode_config.mutex);
2279
2280 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2281 if (!obj) {
2282 goto out;
2283 }
2284 connector = obj_to_connector(obj);
2285
2286 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2287 if (connector->property_ids[i] == out_resp->prop_id)
2288 break;
2289 }
2290
2291 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2292 goto out;
2293 }
2294
2295 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2296 if (!obj) {
2297 goto out;
2298 }
2299 property = obj_to_property(obj);
2300
2301 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2302 goto out;
2303
2304 if (property->flags & DRM_MODE_PROP_RANGE) {
2305 if (out_resp->value < property->values[0])
2306 goto out;
2307
2308 if (out_resp->value > property->values[1])
2309 goto out;
2310 } else {
2311 int found = 0;
2312 for (i = 0; i < property->num_values; i++) {
2313 if (property->values[i] == out_resp->value) {
2314 found = 1;
2315 break;
2316 }
2317 }
2318 if (!found) {
2319 goto out;
2320 }
2321 }
2322
2323 /* Do DPMS ourselves */
2324 if (property == connector->dev->mode_config.dpms_property) {
2325 if (connector->funcs->dpms)
2326 (*connector->funcs->dpms)(connector, (int) out_resp->value);
2327 ret = 0;
2328 } else if (connector->funcs->set_property)
2329 ret = connector->funcs->set_property(connector, property, out_resp->value);
2330
2331 /* store the property value if successful */
2332 if (!ret)
2333 drm_connector_property_set_value(connector, property, out_resp->value);
2334 out:
2335 mutex_unlock(&dev->mode_config.mutex);
2336 return ret;
2337 }
2338
2339 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2340 struct drm_encoder *encoder)
2341 {
2342 int i;
2343
2344 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2345 if (connector->encoder_ids[i] == 0) {
2346 connector->encoder_ids[i] = encoder->base.id;
2347 return 0;
2348 }
2349 }
2350 return -ENOMEM;
2351 }
2352 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2353
2354 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2355 struct drm_encoder *encoder)
2356 {
2357 int i;
2358 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2359 if (connector->encoder_ids[i] == encoder->base.id) {
2360 connector->encoder_ids[i] = 0;
2361 if (connector->encoder == encoder)
2362 connector->encoder = NULL;
2363 break;
2364 }
2365 }
2366 }
2367 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2368
2369 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2370 int gamma_size)
2371 {
2372 crtc->gamma_size = gamma_size;
2373
2374 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2375 if (!crtc->gamma_store) {
2376 crtc->gamma_size = 0;
2377 return false;
2378 }
2379
2380 return true;
2381 }
2382 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2383
2384 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2385 void *data, struct drm_file *file_priv)
2386 {
2387 struct drm_mode_crtc_lut *crtc_lut = data;
2388 struct drm_mode_object *obj;
2389 struct drm_crtc *crtc;
2390 void *r_base, *g_base, *b_base;
2391 int size;
2392 int ret = 0;
2393
2394 mutex_lock(&dev->mode_config.mutex);
2395 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2396 if (!obj) {
2397 ret = -EINVAL;
2398 goto out;
2399 }
2400 crtc = obj_to_crtc(obj);
2401
2402 /* memcpy into gamma store */
2403 if (crtc_lut->gamma_size != crtc->gamma_size) {
2404 ret = -EINVAL;
2405 goto out;
2406 }
2407
2408 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2409 r_base = crtc->gamma_store;
2410 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2411 ret = -EFAULT;
2412 goto out;
2413 }
2414
2415 g_base = r_base + size;
2416 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2417 ret = -EFAULT;
2418 goto out;
2419 }
2420
2421 b_base = g_base + size;
2422 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2423 ret = -EFAULT;
2424 goto out;
2425 }
2426
2427 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
2428
2429 out:
2430 mutex_unlock(&dev->mode_config.mutex);
2431 return ret;
2432
2433 }
2434
2435 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2436 void *data, struct drm_file *file_priv)
2437 {
2438 struct drm_mode_crtc_lut *crtc_lut = data;
2439 struct drm_mode_object *obj;
2440 struct drm_crtc *crtc;
2441 void *r_base, *g_base, *b_base;
2442 int size;
2443 int ret = 0;
2444
2445 mutex_lock(&dev->mode_config.mutex);
2446 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2447 if (!obj) {
2448 ret = -EINVAL;
2449 goto out;
2450 }
2451 crtc = obj_to_crtc(obj);
2452
2453 /* memcpy into gamma store */
2454 if (crtc_lut->gamma_size != crtc->gamma_size) {
2455 ret = -EINVAL;
2456 goto out;
2457 }
2458
2459 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2460 r_base = crtc->gamma_store;
2461 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2462 ret = -EFAULT;
2463 goto out;
2464 }
2465
2466 g_base = r_base + size;
2467 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2468 ret = -EFAULT;
2469 goto out;
2470 }
2471
2472 b_base = g_base + size;
2473 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2474 ret = -EFAULT;
2475 goto out;
2476 }
2477 out:
2478 mutex_unlock(&dev->mode_config.mutex);
2479 return ret;
2480 }
Linus' kernel tree