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Merge Linus master to drm-next
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
1 /*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
32 #include <linux/list.h>
33 #include "drm.h"
34 #include "drmP.h"
35 #include "drm_crtc.h"
36
37 struct drm_prop_enum_list {
38 int type;
39 char *name;
40 };
41
42 /* Avoid boilerplate. I'm tired of typing. */
43 #define DRM_ENUM_NAME_FN(fnname, list) \
44 char *fnname(int val) \
45 { \
46 int i; \
47 for (i = 0; i < ARRAY_SIZE(list); i++) { \
48 if (list[i].type == val) \
49 return list[i].name; \
50 } \
51 return "(unknown)"; \
52 }
53
54 /*
55 * Global properties
56 */
57 static struct drm_prop_enum_list drm_dpms_enum_list[] =
58 { { DRM_MODE_DPMS_ON, "On" },
59 { DRM_MODE_DPMS_STANDBY, "Standby" },
60 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
61 { DRM_MODE_DPMS_OFF, "Off" }
62 };
63
64 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
65
66 /*
67 * Optional properties
68 */
69 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
70 {
71 { DRM_MODE_SCALE_NONE, "None" },
72 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
73 { DRM_MODE_SCALE_CENTER, "Center" },
74 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
75 };
76
77 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
78 {
79 { DRM_MODE_DITHERING_OFF, "Off" },
80 { DRM_MODE_DITHERING_ON, "On" },
81 };
82
83 /*
84 * Non-global properties, but "required" for certain connectors.
85 */
86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
87 {
88 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
89 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
90 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
91 };
92
93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
94
95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
96 {
97 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
98 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
99 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
100 };
101
102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
103 drm_dvi_i_subconnector_enum_list)
104
105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
106 {
107 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
108 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
109 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
110 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
111 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
112 };
113
114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
115
116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
117 {
118 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
123 };
124
125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
126 drm_tv_subconnector_enum_list)
127
128 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
172 char *drm_get_connector_name(struct drm_connector *connector)
173 {
174 static char buf[32];
175
176 snprintf(buf, 32, "%s-%d",
177 drm_connector_enum_list[connector->connector_type].name,
178 connector->connector_type_id);
179 return buf;
180 }
181 EXPORT_SYMBOL(drm_get_connector_name);
182
183 char *drm_get_connector_status_name(enum drm_connector_status status)
184 {
185 if (status == connector_status_connected)
186 return "connected";
187 else if (status == connector_status_disconnected)
188 return "disconnected";
189 else
190 return "unknown";
191 }
192
193 /**
194 * drm_mode_object_get - allocate a new identifier
195 * @dev: DRM device
196 * @ptr: object pointer, used to generate unique ID
197 * @type: object type
198 *
199 * LOCKING:
200 *
201 * Create a unique identifier based on @ptr in @dev's identifier space. Used
202 * for tracking modes, CRTCs and connectors.
203 *
204 * RETURNS:
205 * New unique (relative to other objects in @dev) integer identifier for the
206 * object.
207 */
208 static int drm_mode_object_get(struct drm_device *dev,
209 struct drm_mode_object *obj, uint32_t obj_type)
210 {
211 int new_id = 0;
212 int ret;
213
214 again:
215 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
216 DRM_ERROR("Ran out memory getting a mode number\n");
217 return -EINVAL;
218 }
219
220 mutex_lock(&dev->mode_config.idr_mutex);
221 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
222 mutex_unlock(&dev->mode_config.idr_mutex);
223 if (ret == -EAGAIN)
224 goto again;
225
226 obj->id = new_id;
227 obj->type = obj_type;
228 return 0;
229 }
230
231 /**
232 * drm_mode_object_put - free an identifer
233 * @dev: DRM device
234 * @id: ID to free
235 *
236 * LOCKING:
237 * Caller must hold DRM mode_config lock.
238 *
239 * Free @id from @dev's unique identifier pool.
240 */
241 static void drm_mode_object_put(struct drm_device *dev,
242 struct drm_mode_object *object)
243 {
244 mutex_lock(&dev->mode_config.idr_mutex);
245 idr_remove(&dev->mode_config.crtc_idr, object->id);
246 mutex_unlock(&dev->mode_config.idr_mutex);
247 }
248
249 void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type)
250 {
251 struct drm_mode_object *obj = NULL;
252
253 mutex_lock(&dev->mode_config.idr_mutex);
254 obj = idr_find(&dev->mode_config.crtc_idr, id);
255 if (!obj || (obj->type != type) || (obj->id != id))
256 obj = NULL;
257 mutex_unlock(&dev->mode_config.idr_mutex);
258
259 return obj;
260 }
261 EXPORT_SYMBOL(drm_mode_object_find);
262
263 /**
264 * drm_framebuffer_init - initialize a framebuffer
265 * @dev: DRM device
266 *
267 * LOCKING:
268 * Caller must hold mode config lock.
269 *
270 * Allocates an ID for the framebuffer's parent mode object, sets its mode
271 * functions & device file and adds it to the master fd list.
272 *
273 * RETURNS:
274 * Zero on success, error code on falure.
275 */
276 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
277 const struct drm_framebuffer_funcs *funcs)
278 {
279 int ret;
280
281 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
282 if (ret) {
283 return ret;
284 }
285
286 fb->dev = dev;
287 fb->funcs = funcs;
288 dev->mode_config.num_fb++;
289 list_add(&fb->head, &dev->mode_config.fb_list);
290
291 return 0;
292 }
293 EXPORT_SYMBOL(drm_framebuffer_init);
294
295 /**
296 * drm_framebuffer_cleanup - remove a framebuffer object
297 * @fb: framebuffer to remove
298 *
299 * LOCKING:
300 * Caller must hold mode config lock.
301 *
302 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
303 * it, setting it to NULL.
304 */
305 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
306 {
307 struct drm_device *dev = fb->dev;
308 struct drm_crtc *crtc;
309 struct drm_mode_set set;
310 int ret;
311
312 /* remove from any CRTC */
313 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
314 if (crtc->fb == fb) {
315 /* should turn off the crtc */
316 memset(&set, 0, sizeof(struct drm_mode_set));
317 set.crtc = crtc;
318 set.fb = NULL;
319 ret = crtc->funcs->set_config(&set);
320 if (ret)
321 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
322 }
323 }
324
325 drm_mode_object_put(dev, &fb->base);
326 list_del(&fb->head);
327 dev->mode_config.num_fb--;
328 }
329 EXPORT_SYMBOL(drm_framebuffer_cleanup);
330
331 /**
332 * drm_crtc_init - Initialise a new CRTC object
333 * @dev: DRM device
334 * @crtc: CRTC object to init
335 * @funcs: callbacks for the new CRTC
336 *
337 * LOCKING:
338 * Caller must hold mode config lock.
339 *
340 * Inits a new object created as base part of an driver crtc object.
341 */
342 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
343 const struct drm_crtc_funcs *funcs)
344 {
345 crtc->dev = dev;
346 crtc->funcs = funcs;
347
348 mutex_lock(&dev->mode_config.mutex);
349 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
350
351 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
352 dev->mode_config.num_crtc++;
353 mutex_unlock(&dev->mode_config.mutex);
354 }
355 EXPORT_SYMBOL(drm_crtc_init);
356
357 /**
358 * drm_crtc_cleanup - Cleans up the core crtc usage.
359 * @crtc: CRTC to cleanup
360 *
361 * LOCKING:
362 * Caller must hold mode config lock.
363 *
364 * Cleanup @crtc. Removes from drm modesetting space
365 * does NOT free object, caller does that.
366 */
367 void drm_crtc_cleanup(struct drm_crtc *crtc)
368 {
369 struct drm_device *dev = crtc->dev;
370
371 if (crtc->gamma_store) {
372 kfree(crtc->gamma_store);
373 crtc->gamma_store = NULL;
374 }
375
376 drm_mode_object_put(dev, &crtc->base);
377 list_del(&crtc->head);
378 dev->mode_config.num_crtc--;
379 }
380 EXPORT_SYMBOL(drm_crtc_cleanup);
381
382 /**
383 * drm_mode_probed_add - add a mode to a connector's probed mode list
384 * @connector: connector the new mode
385 * @mode: mode data
386 *
387 * LOCKING:
388 * Caller must hold mode config lock.
389 *
390 * Add @mode to @connector's mode list for later use.
391 */
392 void drm_mode_probed_add(struct drm_connector *connector,
393 struct drm_display_mode *mode)
394 {
395 list_add(&mode->head, &connector->probed_modes);
396 }
397 EXPORT_SYMBOL(drm_mode_probed_add);
398
399 /**
400 * drm_mode_remove - remove and free a mode
401 * @connector: connector list to modify
402 * @mode: mode to remove
403 *
404 * LOCKING:
405 * Caller must hold mode config lock.
406 *
407 * Remove @mode from @connector's mode list, then free it.
408 */
409 void drm_mode_remove(struct drm_connector *connector,
410 struct drm_display_mode *mode)
411 {
412 list_del(&mode->head);
413 kfree(mode);
414 }
415 EXPORT_SYMBOL(drm_mode_remove);
416
417 /**
418 * drm_connector_init - Init a preallocated connector
419 * @dev: DRM device
420 * @connector: the connector to init
421 * @funcs: callbacks for this connector
422 * @name: user visible name of the connector
423 *
424 * LOCKING:
425 * Caller must hold @dev's mode_config lock.
426 *
427 * Initialises a preallocated connector. Connectors should be
428 * subclassed as part of driver connector objects.
429 */
430 void drm_connector_init(struct drm_device *dev,
431 struct drm_connector *connector,
432 const struct drm_connector_funcs *funcs,
433 int connector_type)
434 {
435 mutex_lock(&dev->mode_config.mutex);
436
437 connector->dev = dev;
438 connector->funcs = funcs;
439 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
440 connector->connector_type = connector_type;
441 connector->connector_type_id =
442 ++drm_connector_enum_list[connector_type].count; /* TODO */
443 INIT_LIST_HEAD(&connector->user_modes);
444 INIT_LIST_HEAD(&connector->probed_modes);
445 INIT_LIST_HEAD(&connector->modes);
446 connector->edid_blob_ptr = NULL;
447
448 list_add_tail(&connector->head, &dev->mode_config.connector_list);
449 dev->mode_config.num_connector++;
450
451 drm_connector_attach_property(connector,
452 dev->mode_config.edid_property, 0);
453
454 drm_connector_attach_property(connector,
455 dev->mode_config.dpms_property, 0);
456
457 mutex_unlock(&dev->mode_config.mutex);
458 }
459 EXPORT_SYMBOL(drm_connector_init);
460
461 /**
462 * drm_connector_cleanup - cleans up an initialised connector
463 * @connector: connector to cleanup
464 *
465 * LOCKING:
466 * Caller must hold @dev's mode_config lock.
467 *
468 * Cleans up the connector but doesn't free the object.
469 */
470 void drm_connector_cleanup(struct drm_connector *connector)
471 {
472 struct drm_device *dev = connector->dev;
473 struct drm_display_mode *mode, *t;
474
475 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
476 drm_mode_remove(connector, mode);
477
478 list_for_each_entry_safe(mode, t, &connector->modes, head)
479 drm_mode_remove(connector, mode);
480
481 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
482 drm_mode_remove(connector, mode);
483
484 mutex_lock(&dev->mode_config.mutex);
485 drm_mode_object_put(dev, &connector->base);
486 list_del(&connector->head);
487 mutex_unlock(&dev->mode_config.mutex);
488 }
489 EXPORT_SYMBOL(drm_connector_cleanup);
490
491 void drm_encoder_init(struct drm_device *dev,
492 struct drm_encoder *encoder,
493 const struct drm_encoder_funcs *funcs,
494 int encoder_type)
495 {
496 mutex_lock(&dev->mode_config.mutex);
497
498 encoder->dev = dev;
499
500 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
501 encoder->encoder_type = encoder_type;
502 encoder->funcs = funcs;
503
504 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
505 dev->mode_config.num_encoder++;
506
507 mutex_unlock(&dev->mode_config.mutex);
508 }
509 EXPORT_SYMBOL(drm_encoder_init);
510
511 void drm_encoder_cleanup(struct drm_encoder *encoder)
512 {
513 struct drm_device *dev = encoder->dev;
514 mutex_lock(&dev->mode_config.mutex);
515 drm_mode_object_put(dev, &encoder->base);
516 list_del(&encoder->head);
517 mutex_unlock(&dev->mode_config.mutex);
518 }
519 EXPORT_SYMBOL(drm_encoder_cleanup);
520
521 /**
522 * drm_mode_create - create a new display mode
523 * @dev: DRM device
524 *
525 * LOCKING:
526 * Caller must hold DRM mode_config lock.
527 *
528 * Create a new drm_display_mode, give it an ID, and return it.
529 *
530 * RETURNS:
531 * Pointer to new mode on success, NULL on error.
532 */
533 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
534 {
535 struct drm_display_mode *nmode;
536
537 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
538 if (!nmode)
539 return NULL;
540
541 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
542 return nmode;
543 }
544 EXPORT_SYMBOL(drm_mode_create);
545
546 /**
547 * drm_mode_destroy - remove a mode
548 * @dev: DRM device
549 * @mode: mode to remove
550 *
551 * LOCKING:
552 * Caller must hold mode config lock.
553 *
554 * Free @mode's unique identifier, then free it.
555 */
556 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
557 {
558 drm_mode_object_put(dev, &mode->base);
559
560 kfree(mode);
561 }
562 EXPORT_SYMBOL(drm_mode_destroy);
563
564 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
565 {
566 struct drm_property *edid;
567 struct drm_property *dpms;
568 int i;
569
570 /*
571 * Standard properties (apply to all connectors)
572 */
573 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
574 DRM_MODE_PROP_IMMUTABLE,
575 "EDID", 0);
576 dev->mode_config.edid_property = edid;
577
578 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
579 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
580 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
581 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
582 drm_dpms_enum_list[i].name);
583 dev->mode_config.dpms_property = dpms;
584
585 return 0;
586 }
587
588 /**
589 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
590 * @dev: DRM device
591 *
592 * Called by a driver the first time a DVI-I connector is made.
593 */
594 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
595 {
596 struct drm_property *dvi_i_selector;
597 struct drm_property *dvi_i_subconnector;
598 int i;
599
600 if (dev->mode_config.dvi_i_select_subconnector_property)
601 return 0;
602
603 dvi_i_selector =
604 drm_property_create(dev, DRM_MODE_PROP_ENUM,
605 "select subconnector",
606 ARRAY_SIZE(drm_dvi_i_select_enum_list));
607 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
608 drm_property_add_enum(dvi_i_selector, i,
609 drm_dvi_i_select_enum_list[i].type,
610 drm_dvi_i_select_enum_list[i].name);
611 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
612
613 dvi_i_subconnector =
614 drm_property_create(dev, DRM_MODE_PROP_ENUM |
615 DRM_MODE_PROP_IMMUTABLE,
616 "subconnector",
617 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
618 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
619 drm_property_add_enum(dvi_i_subconnector, i,
620 drm_dvi_i_subconnector_enum_list[i].type,
621 drm_dvi_i_subconnector_enum_list[i].name);
622 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
623
624 return 0;
625 }
626 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
627
628 /**
629 * drm_create_tv_properties - create TV specific connector properties
630 * @dev: DRM device
631 * @num_modes: number of different TV formats (modes) supported
632 * @modes: array of pointers to strings containing name of each format
633 *
634 * Called by a driver's TV initialization routine, this function creates
635 * the TV specific connector properties for a given device. Caller is
636 * responsible for allocating a list of format names and passing them to
637 * this routine.
638 */
639 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
640 char *modes[])
641 {
642 struct drm_property *tv_selector;
643 struct drm_property *tv_subconnector;
644 int i;
645
646 if (dev->mode_config.tv_select_subconnector_property)
647 return 0;
648
649 /*
650 * Basic connector properties
651 */
652 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
653 "select subconnector",
654 ARRAY_SIZE(drm_tv_select_enum_list));
655 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
656 drm_property_add_enum(tv_selector, i,
657 drm_tv_select_enum_list[i].type,
658 drm_tv_select_enum_list[i].name);
659 dev->mode_config.tv_select_subconnector_property = tv_selector;
660
661 tv_subconnector =
662 drm_property_create(dev, DRM_MODE_PROP_ENUM |
663 DRM_MODE_PROP_IMMUTABLE, "subconnector",
664 ARRAY_SIZE(drm_tv_subconnector_enum_list));
665 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
666 drm_property_add_enum(tv_subconnector, i,
667 drm_tv_subconnector_enum_list[i].type,
668 drm_tv_subconnector_enum_list[i].name);
669 dev->mode_config.tv_subconnector_property = tv_subconnector;
670
671 /*
672 * Other, TV specific properties: margins & TV modes.
673 */
674 dev->mode_config.tv_left_margin_property =
675 drm_property_create(dev, DRM_MODE_PROP_RANGE,
676 "left margin", 2);
677 dev->mode_config.tv_left_margin_property->values[0] = 0;
678 dev->mode_config.tv_left_margin_property->values[1] = 100;
679
680 dev->mode_config.tv_right_margin_property =
681 drm_property_create(dev, DRM_MODE_PROP_RANGE,
682 "right margin", 2);
683 dev->mode_config.tv_right_margin_property->values[0] = 0;
684 dev->mode_config.tv_right_margin_property->values[1] = 100;
685
686 dev->mode_config.tv_top_margin_property =
687 drm_property_create(dev, DRM_MODE_PROP_RANGE,
688 "top margin", 2);
689 dev->mode_config.tv_top_margin_property->values[0] = 0;
690 dev->mode_config.tv_top_margin_property->values[1] = 100;
691
692 dev->mode_config.tv_bottom_margin_property =
693 drm_property_create(dev, DRM_MODE_PROP_RANGE,
694 "bottom margin", 2);
695 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
696 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
697
698 dev->mode_config.tv_mode_property =
699 drm_property_create(dev, DRM_MODE_PROP_ENUM,
700 "mode", num_modes);
701 for (i = 0; i < num_modes; i++)
702 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
703 i, modes[i]);
704
705 dev->mode_config.tv_brightness_property =
706 drm_property_create(dev, DRM_MODE_PROP_RANGE,
707 "brightness", 2);
708 dev->mode_config.tv_brightness_property->values[0] = 0;
709 dev->mode_config.tv_brightness_property->values[1] = 100;
710
711 dev->mode_config.tv_contrast_property =
712 drm_property_create(dev, DRM_MODE_PROP_RANGE,
713 "contrast", 2);
714 dev->mode_config.tv_contrast_property->values[0] = 0;
715 dev->mode_config.tv_contrast_property->values[1] = 100;
716
717 dev->mode_config.tv_flicker_reduction_property =
718 drm_property_create(dev, DRM_MODE_PROP_RANGE,
719 "flicker reduction", 2);
720 dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
721 dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
722
723 dev->mode_config.tv_overscan_property =
724 drm_property_create(dev, DRM_MODE_PROP_RANGE,
725 "overscan", 2);
726 dev->mode_config.tv_overscan_property->values[0] = 0;
727 dev->mode_config.tv_overscan_property->values[1] = 100;
728
729 dev->mode_config.tv_saturation_property =
730 drm_property_create(dev, DRM_MODE_PROP_RANGE,
731 "saturation", 2);
732 dev->mode_config.tv_saturation_property->values[0] = 0;
733 dev->mode_config.tv_saturation_property->values[1] = 100;
734
735 dev->mode_config.tv_hue_property =
736 drm_property_create(dev, DRM_MODE_PROP_RANGE,
737 "hue", 2);
738 dev->mode_config.tv_hue_property->values[0] = 0;
739 dev->mode_config.tv_hue_property->values[1] = 100;
740
741 return 0;
742 }
743 EXPORT_SYMBOL(drm_mode_create_tv_properties);
744
745 /**
746 * drm_mode_create_scaling_mode_property - create scaling mode property
747 * @dev: DRM device
748 *
749 * Called by a driver the first time it's needed, must be attached to desired
750 * connectors.
751 */
752 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
753 {
754 struct drm_property *scaling_mode;
755 int i;
756
757 if (dev->mode_config.scaling_mode_property)
758 return 0;
759
760 scaling_mode =
761 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
762 ARRAY_SIZE(drm_scaling_mode_enum_list));
763 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
764 drm_property_add_enum(scaling_mode, i,
765 drm_scaling_mode_enum_list[i].type,
766 drm_scaling_mode_enum_list[i].name);
767
768 dev->mode_config.scaling_mode_property = scaling_mode;
769
770 return 0;
771 }
772 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
773
774 /**
775 * drm_mode_create_dithering_property - create dithering property
776 * @dev: DRM device
777 *
778 * Called by a driver the first time it's needed, must be attached to desired
779 * connectors.
780 */
781 int drm_mode_create_dithering_property(struct drm_device *dev)
782 {
783 struct drm_property *dithering_mode;
784 int i;
785
786 if (dev->mode_config.dithering_mode_property)
787 return 0;
788
789 dithering_mode =
790 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
791 ARRAY_SIZE(drm_dithering_mode_enum_list));
792 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
793 drm_property_add_enum(dithering_mode, i,
794 drm_dithering_mode_enum_list[i].type,
795 drm_dithering_mode_enum_list[i].name);
796 dev->mode_config.dithering_mode_property = dithering_mode;
797
798 return 0;
799 }
800 EXPORT_SYMBOL(drm_mode_create_dithering_property);
801
802 /**
803 * drm_mode_config_init - initialize DRM mode_configuration structure
804 * @dev: DRM device
805 *
806 * LOCKING:
807 * None, should happen single threaded at init time.
808 *
809 * Initialize @dev's mode_config structure, used for tracking the graphics
810 * configuration of @dev.
811 */
812 void drm_mode_config_init(struct drm_device *dev)
813 {
814 mutex_init(&dev->mode_config.mutex);
815 mutex_init(&dev->mode_config.idr_mutex);
816 INIT_LIST_HEAD(&dev->mode_config.fb_list);
817 INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
818 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
819 INIT_LIST_HEAD(&dev->mode_config.connector_list);
820 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
821 INIT_LIST_HEAD(&dev->mode_config.property_list);
822 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
823 idr_init(&dev->mode_config.crtc_idr);
824
825 mutex_lock(&dev->mode_config.mutex);
826 drm_mode_create_standard_connector_properties(dev);
827 mutex_unlock(&dev->mode_config.mutex);
828
829 /* Just to be sure */
830 dev->mode_config.num_fb = 0;
831 dev->mode_config.num_connector = 0;
832 dev->mode_config.num_crtc = 0;
833 dev->mode_config.num_encoder = 0;
834 }
835 EXPORT_SYMBOL(drm_mode_config_init);
836
837 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
838 {
839 uint32_t total_objects = 0;
840
841 total_objects += dev->mode_config.num_crtc;
842 total_objects += dev->mode_config.num_connector;
843 total_objects += dev->mode_config.num_encoder;
844
845 if (total_objects == 0)
846 return -EINVAL;
847
848 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
849 if (!group->id_list)
850 return -ENOMEM;
851
852 group->num_crtcs = 0;
853 group->num_connectors = 0;
854 group->num_encoders = 0;
855 return 0;
856 }
857
858 int drm_mode_group_init_legacy_group(struct drm_device *dev,
859 struct drm_mode_group *group)
860 {
861 struct drm_crtc *crtc;
862 struct drm_encoder *encoder;
863 struct drm_connector *connector;
864 int ret;
865
866 if ((ret = drm_mode_group_init(dev, group)))
867 return ret;
868
869 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
870 group->id_list[group->num_crtcs++] = crtc->base.id;
871
872 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
873 group->id_list[group->num_crtcs + group->num_encoders++] =
874 encoder->base.id;
875
876 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
877 group->id_list[group->num_crtcs + group->num_encoders +
878 group->num_connectors++] = connector->base.id;
879
880 return 0;
881 }
882
883 /**
884 * drm_mode_config_cleanup - free up DRM mode_config info
885 * @dev: DRM device
886 *
887 * LOCKING:
888 * Caller must hold mode config lock.
889 *
890 * Free up all the connectors and CRTCs associated with this DRM device, then
891 * free up the framebuffers and associated buffer objects.
892 *
893 * FIXME: cleanup any dangling user buffer objects too
894 */
895 void drm_mode_config_cleanup(struct drm_device *dev)
896 {
897 struct drm_connector *connector, *ot;
898 struct drm_crtc *crtc, *ct;
899 struct drm_encoder *encoder, *enct;
900 struct drm_framebuffer *fb, *fbt;
901 struct drm_property *property, *pt;
902
903 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
904 head) {
905 encoder->funcs->destroy(encoder);
906 }
907
908 list_for_each_entry_safe(connector, ot,
909 &dev->mode_config.connector_list, head) {
910 connector->funcs->destroy(connector);
911 }
912
913 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
914 head) {
915 drm_property_destroy(dev, property);
916 }
917
918 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
919 fb->funcs->destroy(fb);
920 }
921
922 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
923 crtc->funcs->destroy(crtc);
924 }
925
926 }
927 EXPORT_SYMBOL(drm_mode_config_cleanup);
928
929 /**
930 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
931 * @out: drm_mode_modeinfo struct to return to the user
932 * @in: drm_display_mode to use
933 *
934 * LOCKING:
935 * None.
936 *
937 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
938 * the user.
939 */
940 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
941 struct drm_display_mode *in)
942 {
943 out->clock = in->clock;
944 out->hdisplay = in->hdisplay;
945 out->hsync_start = in->hsync_start;
946 out->hsync_end = in->hsync_end;
947 out->htotal = in->htotal;
948 out->hskew = in->hskew;
949 out->vdisplay = in->vdisplay;
950 out->vsync_start = in->vsync_start;
951 out->vsync_end = in->vsync_end;
952 out->vtotal = in->vtotal;
953 out->vscan = in->vscan;
954 out->vrefresh = in->vrefresh;
955 out->flags = in->flags;
956 out->type = in->type;
957 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
958 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
959 }
960
961 /**
962 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
963 * @out: drm_display_mode to return to the user
964 * @in: drm_mode_modeinfo to use
965 *
966 * LOCKING:
967 * None.
968 *
969 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
970 * the caller.
971 */
972 void drm_crtc_convert_umode(struct drm_display_mode *out,
973 struct drm_mode_modeinfo *in)
974 {
975 out->clock = in->clock;
976 out->hdisplay = in->hdisplay;
977 out->hsync_start = in->hsync_start;
978 out->hsync_end = in->hsync_end;
979 out->htotal = in->htotal;
980 out->hskew = in->hskew;
981 out->vdisplay = in->vdisplay;
982 out->vsync_start = in->vsync_start;
983 out->vsync_end = in->vsync_end;
984 out->vtotal = in->vtotal;
985 out->vscan = in->vscan;
986 out->vrefresh = in->vrefresh;
987 out->flags = in->flags;
988 out->type = in->type;
989 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
990 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
991 }
992
993 /**
994 * drm_mode_getresources - get graphics configuration
995 * @inode: inode from the ioctl
996 * @filp: file * from the ioctl
997 * @cmd: cmd from ioctl
998 * @arg: arg from ioctl
999 *
1000 * LOCKING:
1001 * Takes mode config lock.
1002 *
1003 * Construct a set of configuration description structures and return
1004 * them to the user, including CRTC, connector and framebuffer configuration.
1005 *
1006 * Called by the user via ioctl.
1007 *
1008 * RETURNS:
1009 * Zero on success, errno on failure.
1010 */
1011 int drm_mode_getresources(struct drm_device *dev, void *data,
1012 struct drm_file *file_priv)
1013 {
1014 struct drm_mode_card_res *card_res = data;
1015 struct list_head *lh;
1016 struct drm_framebuffer *fb;
1017 struct drm_connector *connector;
1018 struct drm_crtc *crtc;
1019 struct drm_encoder *encoder;
1020 int ret = 0;
1021 int connector_count = 0;
1022 int crtc_count = 0;
1023 int fb_count = 0;
1024 int encoder_count = 0;
1025 int copied = 0, i;
1026 uint32_t __user *fb_id;
1027 uint32_t __user *crtc_id;
1028 uint32_t __user *connector_id;
1029 uint32_t __user *encoder_id;
1030 struct drm_mode_group *mode_group;
1031
1032 mutex_lock(&dev->mode_config.mutex);
1033
1034 /*
1035 * For the non-control nodes we need to limit the list of resources
1036 * by IDs in the group list for this node
1037 */
1038 list_for_each(lh, &file_priv->fbs)
1039 fb_count++;
1040
1041 mode_group = &file_priv->master->minor->mode_group;
1042 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1043
1044 list_for_each(lh, &dev->mode_config.crtc_list)
1045 crtc_count++;
1046
1047 list_for_each(lh, &dev->mode_config.connector_list)
1048 connector_count++;
1049
1050 list_for_each(lh, &dev->mode_config.encoder_list)
1051 encoder_count++;
1052 } else {
1053
1054 crtc_count = mode_group->num_crtcs;
1055 connector_count = mode_group->num_connectors;
1056 encoder_count = mode_group->num_encoders;
1057 }
1058
1059 card_res->max_height = dev->mode_config.max_height;
1060 card_res->min_height = dev->mode_config.min_height;
1061 card_res->max_width = dev->mode_config.max_width;
1062 card_res->min_width = dev->mode_config.min_width;
1063
1064 /* handle this in 4 parts */
1065 /* FBs */
1066 if (card_res->count_fbs >= fb_count) {
1067 copied = 0;
1068 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1069 list_for_each_entry(fb, &file_priv->fbs, head) {
1070 if (put_user(fb->base.id, fb_id + copied)) {
1071 ret = -EFAULT;
1072 goto out;
1073 }
1074 copied++;
1075 }
1076 }
1077 card_res->count_fbs = fb_count;
1078
1079 /* CRTCs */
1080 if (card_res->count_crtcs >= crtc_count) {
1081 copied = 0;
1082 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1083 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1084 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1085 head) {
1086 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1087 if (put_user(crtc->base.id, crtc_id + copied)) {
1088 ret = -EFAULT;
1089 goto out;
1090 }
1091 copied++;
1092 }
1093 } else {
1094 for (i = 0; i < mode_group->num_crtcs; i++) {
1095 if (put_user(mode_group->id_list[i],
1096 crtc_id + copied)) {
1097 ret = -EFAULT;
1098 goto out;
1099 }
1100 copied++;
1101 }
1102 }
1103 }
1104 card_res->count_crtcs = crtc_count;
1105
1106 /* Encoders */
1107 if (card_res->count_encoders >= encoder_count) {
1108 copied = 0;
1109 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1110 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1111 list_for_each_entry(encoder,
1112 &dev->mode_config.encoder_list,
1113 head) {
1114 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1115 encoder->base.id);
1116 if (put_user(encoder->base.id, encoder_id +
1117 copied)) {
1118 ret = -EFAULT;
1119 goto out;
1120 }
1121 copied++;
1122 }
1123 } else {
1124 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1125 if (put_user(mode_group->id_list[i],
1126 encoder_id + copied)) {
1127 ret = -EFAULT;
1128 goto out;
1129 }
1130 copied++;
1131 }
1132
1133 }
1134 }
1135 card_res->count_encoders = encoder_count;
1136
1137 /* Connectors */
1138 if (card_res->count_connectors >= connector_count) {
1139 copied = 0;
1140 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1141 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1142 list_for_each_entry(connector,
1143 &dev->mode_config.connector_list,
1144 head) {
1145 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1146 connector->base.id);
1147 if (put_user(connector->base.id,
1148 connector_id + copied)) {
1149 ret = -EFAULT;
1150 goto out;
1151 }
1152 copied++;
1153 }
1154 } else {
1155 int start = mode_group->num_crtcs +
1156 mode_group->num_encoders;
1157 for (i = start; i < start + mode_group->num_connectors; i++) {
1158 if (put_user(mode_group->id_list[i],
1159 connector_id + copied)) {
1160 ret = -EFAULT;
1161 goto out;
1162 }
1163 copied++;
1164 }
1165 }
1166 }
1167 card_res->count_connectors = connector_count;
1168
1169 DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1170 card_res->count_connectors, card_res->count_encoders);
1171
1172 out:
1173 mutex_unlock(&dev->mode_config.mutex);
1174 return ret;
1175 }
1176
1177 /**
1178 * drm_mode_getcrtc - get CRTC configuration
1179 * @inode: inode from the ioctl
1180 * @filp: file * from the ioctl
1181 * @cmd: cmd from ioctl
1182 * @arg: arg from ioctl
1183 *
1184 * LOCKING:
1185 * Caller? (FIXME)
1186 *
1187 * Construct a CRTC configuration structure to return to the user.
1188 *
1189 * Called by the user via ioctl.
1190 *
1191 * RETURNS:
1192 * Zero on success, errno on failure.
1193 */
1194 int drm_mode_getcrtc(struct drm_device *dev,
1195 void *data, struct drm_file *file_priv)
1196 {
1197 struct drm_mode_crtc *crtc_resp = data;
1198 struct drm_crtc *crtc;
1199 struct drm_mode_object *obj;
1200 int ret = 0;
1201
1202 mutex_lock(&dev->mode_config.mutex);
1203
1204 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1205 DRM_MODE_OBJECT_CRTC);
1206 if (!obj) {
1207 ret = -EINVAL;
1208 goto out;
1209 }
1210 crtc = obj_to_crtc(obj);
1211
1212 crtc_resp->x = crtc->x;
1213 crtc_resp->y = crtc->y;
1214 crtc_resp->gamma_size = crtc->gamma_size;
1215 if (crtc->fb)
1216 crtc_resp->fb_id = crtc->fb->base.id;
1217 else
1218 crtc_resp->fb_id = 0;
1219
1220 if (crtc->enabled) {
1221
1222 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1223 crtc_resp->mode_valid = 1;
1224
1225 } else {
1226 crtc_resp->mode_valid = 0;
1227 }
1228
1229 out:
1230 mutex_unlock(&dev->mode_config.mutex);
1231 return ret;
1232 }
1233
1234 /**
1235 * drm_mode_getconnector - get connector configuration
1236 * @inode: inode from the ioctl
1237 * @filp: file * from the ioctl
1238 * @cmd: cmd from ioctl
1239 * @arg: arg from ioctl
1240 *
1241 * LOCKING:
1242 * Caller? (FIXME)
1243 *
1244 * Construct a connector configuration structure to return to the user.
1245 *
1246 * Called by the user via ioctl.
1247 *
1248 * RETURNS:
1249 * Zero on success, errno on failure.
1250 */
1251 int drm_mode_getconnector(struct drm_device *dev, void *data,
1252 struct drm_file *file_priv)
1253 {
1254 struct drm_mode_get_connector *out_resp = data;
1255 struct drm_mode_object *obj;
1256 struct drm_connector *connector;
1257 struct drm_display_mode *mode;
1258 int mode_count = 0;
1259 int props_count = 0;
1260 int encoders_count = 0;
1261 int ret = 0;
1262 int copied = 0;
1263 int i;
1264 struct drm_mode_modeinfo u_mode;
1265 struct drm_mode_modeinfo __user *mode_ptr;
1266 uint32_t __user *prop_ptr;
1267 uint64_t __user *prop_values;
1268 uint32_t __user *encoder_ptr;
1269
1270 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1271
1272 DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1273
1274 mutex_lock(&dev->mode_config.mutex);
1275
1276 obj = drm_mode_object_find(dev, out_resp->connector_id,
1277 DRM_MODE_OBJECT_CONNECTOR);
1278 if (!obj) {
1279 ret = -EINVAL;
1280 goto out;
1281 }
1282 connector = obj_to_connector(obj);
1283
1284 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1285 if (connector->property_ids[i] != 0) {
1286 props_count++;
1287 }
1288 }
1289
1290 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1291 if (connector->encoder_ids[i] != 0) {
1292 encoders_count++;
1293 }
1294 }
1295
1296 if (out_resp->count_modes == 0) {
1297 connector->funcs->fill_modes(connector,
1298 dev->mode_config.max_width,
1299 dev->mode_config.max_height);
1300 }
1301
1302 /* delayed so we get modes regardless of pre-fill_modes state */
1303 list_for_each_entry(mode, &connector->modes, head)
1304 mode_count++;
1305
1306 out_resp->connector_id = connector->base.id;
1307 out_resp->connector_type = connector->connector_type;
1308 out_resp->connector_type_id = connector->connector_type_id;
1309 out_resp->mm_width = connector->display_info.width_mm;
1310 out_resp->mm_height = connector->display_info.height_mm;
1311 out_resp->subpixel = connector->display_info.subpixel_order;
1312 out_resp->connection = connector->status;
1313 if (connector->encoder)
1314 out_resp->encoder_id = connector->encoder->base.id;
1315 else
1316 out_resp->encoder_id = 0;
1317
1318 /*
1319 * This ioctl is called twice, once to determine how much space is
1320 * needed, and the 2nd time to fill it.
1321 */
1322 if ((out_resp->count_modes >= mode_count) && mode_count) {
1323 copied = 0;
1324 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1325 list_for_each_entry(mode, &connector->modes, head) {
1326 drm_crtc_convert_to_umode(&u_mode, mode);
1327 if (copy_to_user(mode_ptr + copied,
1328 &u_mode, sizeof(u_mode))) {
1329 ret = -EFAULT;
1330 goto out;
1331 }
1332 copied++;
1333 }
1334 }
1335 out_resp->count_modes = mode_count;
1336
1337 if ((out_resp->count_props >= props_count) && props_count) {
1338 copied = 0;
1339 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1340 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1341 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1342 if (connector->property_ids[i] != 0) {
1343 if (put_user(connector->property_ids[i],
1344 prop_ptr + copied)) {
1345 ret = -EFAULT;
1346 goto out;
1347 }
1348
1349 if (put_user(connector->property_values[i],
1350 prop_values + copied)) {
1351 ret = -EFAULT;
1352 goto out;
1353 }
1354 copied++;
1355 }
1356 }
1357 }
1358 out_resp->count_props = props_count;
1359
1360 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1361 copied = 0;
1362 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1363 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1364 if (connector->encoder_ids[i] != 0) {
1365 if (put_user(connector->encoder_ids[i],
1366 encoder_ptr + copied)) {
1367 ret = -EFAULT;
1368 goto out;
1369 }
1370 copied++;
1371 }
1372 }
1373 }
1374 out_resp->count_encoders = encoders_count;
1375
1376 out:
1377 mutex_unlock(&dev->mode_config.mutex);
1378 return ret;
1379 }
1380
1381 int drm_mode_getencoder(struct drm_device *dev, void *data,
1382 struct drm_file *file_priv)
1383 {
1384 struct drm_mode_get_encoder *enc_resp = data;
1385 struct drm_mode_object *obj;
1386 struct drm_encoder *encoder;
1387 int ret = 0;
1388
1389 mutex_lock(&dev->mode_config.mutex);
1390 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1391 DRM_MODE_OBJECT_ENCODER);
1392 if (!obj) {
1393 ret = -EINVAL;
1394 goto out;
1395 }
1396 encoder = obj_to_encoder(obj);
1397
1398 if (encoder->crtc)
1399 enc_resp->crtc_id = encoder->crtc->base.id;
1400 else
1401 enc_resp->crtc_id = 0;
1402 enc_resp->encoder_type = encoder->encoder_type;
1403 enc_resp->encoder_id = encoder->base.id;
1404 enc_resp->possible_crtcs = encoder->possible_crtcs;
1405 enc_resp->possible_clones = encoder->possible_clones;
1406
1407 out:
1408 mutex_unlock(&dev->mode_config.mutex);
1409 return ret;
1410 }
1411
1412 /**
1413 * drm_mode_setcrtc - set CRTC configuration
1414 * @inode: inode from the ioctl
1415 * @filp: file * from the ioctl
1416 * @cmd: cmd from ioctl
1417 * @arg: arg from ioctl
1418 *
1419 * LOCKING:
1420 * Caller? (FIXME)
1421 *
1422 * Build a new CRTC configuration based on user request.
1423 *
1424 * Called by the user via ioctl.
1425 *
1426 * RETURNS:
1427 * Zero on success, errno on failure.
1428 */
1429 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1430 struct drm_file *file_priv)
1431 {
1432 struct drm_mode_config *config = &dev->mode_config;
1433 struct drm_mode_crtc *crtc_req = data;
1434 struct drm_mode_object *obj;
1435 struct drm_crtc *crtc, *crtcfb;
1436 struct drm_connector **connector_set = NULL, *connector;
1437 struct drm_framebuffer *fb = NULL;
1438 struct drm_display_mode *mode = NULL;
1439 struct drm_mode_set set;
1440 uint32_t __user *set_connectors_ptr;
1441 int ret = 0;
1442 int i;
1443
1444 mutex_lock(&dev->mode_config.mutex);
1445 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1446 DRM_MODE_OBJECT_CRTC);
1447 if (!obj) {
1448 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1449 ret = -EINVAL;
1450 goto out;
1451 }
1452 crtc = obj_to_crtc(obj);
1453
1454 if (crtc_req->mode_valid) {
1455 /* If we have a mode we need a framebuffer. */
1456 /* If we pass -1, set the mode with the currently bound fb */
1457 if (crtc_req->fb_id == -1) {
1458 list_for_each_entry(crtcfb,
1459 &dev->mode_config.crtc_list, head) {
1460 if (crtcfb == crtc) {
1461 DRM_DEBUG_KMS("Using current fb for "
1462 "setmode\n");
1463 fb = crtc->fb;
1464 }
1465 }
1466 } else {
1467 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1468 DRM_MODE_OBJECT_FB);
1469 if (!obj) {
1470 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1471 crtc_req->fb_id);
1472 ret = -EINVAL;
1473 goto out;
1474 }
1475 fb = obj_to_fb(obj);
1476 }
1477
1478 mode = drm_mode_create(dev);
1479 drm_crtc_convert_umode(mode, &crtc_req->mode);
1480 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1481 }
1482
1483 if (crtc_req->count_connectors == 0 && mode) {
1484 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1485 ret = -EINVAL;
1486 goto out;
1487 }
1488
1489 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1490 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1491 crtc_req->count_connectors);
1492 ret = -EINVAL;
1493 goto out;
1494 }
1495
1496 if (crtc_req->count_connectors > 0) {
1497 u32 out_id;
1498
1499 /* Avoid unbounded kernel memory allocation */
1500 if (crtc_req->count_connectors > config->num_connector) {
1501 ret = -EINVAL;
1502 goto out;
1503 }
1504
1505 connector_set = kmalloc(crtc_req->count_connectors *
1506 sizeof(struct drm_connector *),
1507 GFP_KERNEL);
1508 if (!connector_set) {
1509 ret = -ENOMEM;
1510 goto out;
1511 }
1512
1513 for (i = 0; i < crtc_req->count_connectors; i++) {
1514 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1515 if (get_user(out_id, &set_connectors_ptr[i])) {
1516 ret = -EFAULT;
1517 goto out;
1518 }
1519
1520 obj = drm_mode_object_find(dev, out_id,
1521 DRM_MODE_OBJECT_CONNECTOR);
1522 if (!obj) {
1523 DRM_DEBUG_KMS("Connector id %d unknown\n",
1524 out_id);
1525 ret = -EINVAL;
1526 goto out;
1527 }
1528 connector = obj_to_connector(obj);
1529
1530 connector_set[i] = connector;
1531 }
1532 }
1533
1534 set.crtc = crtc;
1535 set.x = crtc_req->x;
1536 set.y = crtc_req->y;
1537 set.mode = mode;
1538 set.connectors = connector_set;
1539 set.num_connectors = crtc_req->count_connectors;
1540 set.fb = fb;
1541 ret = crtc->funcs->set_config(&set);
1542
1543 out:
1544 kfree(connector_set);
1545 mutex_unlock(&dev->mode_config.mutex);
1546 return ret;
1547 }
1548
1549 int drm_mode_cursor_ioctl(struct drm_device *dev,
1550 void *data, struct drm_file *file_priv)
1551 {
1552 struct drm_mode_cursor *req = data;
1553 struct drm_mode_object *obj;
1554 struct drm_crtc *crtc;
1555 int ret = 0;
1556
1557 DRM_DEBUG_KMS("\n");
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 succesful */
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 }
Linux kernel - Deliverables
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