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ecryptfs: fix use with tmpfs by removing d_drop from ecryptfs_destroy_inode
[linux/fpc-iii.git] / drivers / gpu / drm / drm_crtc.c
blobd91fb8c0b7b31673f43b885e8b0c38b0c1b6ec50
1 /*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
32 #include <linux/list.h>
33 #include "drm.h"
34 #include "drmP.h"
35 #include "drm_crtc.h"
36
37 struct drm_prop_enum_list {
38 int type;
39 char *name;
40 };
41
42 /* Avoid boilerplate. I'm tired of typing. */
43 #define DRM_ENUM_NAME_FN(fnname, list) \
44 char *fnname(int val) \
45 { \
46 int i; \
47 for (i = 0; i < ARRAY_SIZE(list); i++) { \
48 if (list[i].type == val) \
49 return list[i].name; \
50 } \
51 return "(unknown)"; \
52 }
53
54 /*
55 * Global properties
56 */
57 static struct drm_prop_enum_list drm_dpms_enum_list[] =
58 { { DRM_MODE_DPMS_ON, "On" },
59 { DRM_MODE_DPMS_STANDBY, "Standby" },
60 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
61 { DRM_MODE_DPMS_OFF, "Off" }
62 };
63
64 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
65
66 /*
67 * Optional properties
68 */
69 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
70 {
71 { DRM_MODE_SCALE_NONE, "None" },
72 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
73 { DRM_MODE_SCALE_CENTER, "Center" },
74 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
75 };
76
77 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
78 {
79 { DRM_MODE_DITHERING_OFF, "Off" },
80 { DRM_MODE_DITHERING_ON, "On" },
81 };
82
83 /*
84 * Non-global properties, but "required" for certain connectors.
85 */
86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
87 {
88 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
89 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
90 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
91 };
92
93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
94
95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
96 {
97 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
98 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
99 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
100 };
101
102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
103 drm_dvi_i_subconnector_enum_list)
104
105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
106 {
107 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
108 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
109 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
110 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
111 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
112 };
113
114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
115
116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
117 {
118 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
123 };
124
125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
126 drm_tv_subconnector_enum_list)
127
128 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
129 { DRM_MODE_DIRTY_OFF, "Off" },
130 { DRM_MODE_DIRTY_ON, "On" },
131 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
132 };
133
134 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
135 drm_dirty_info_enum_list)
136
137 struct drm_conn_prop_enum_list {
138 int type;
139 char *name;
140 int count;
141 };
142
143 /*
144 * Connector and encoder types.
145 */
146 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
147 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
148 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
149 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
150 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
151 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
152 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
153 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
154 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
155 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
156 { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
157 { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
158 { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
159 { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
160 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
161 { DRM_MODE_CONNECTOR_eDP, "Embedded DisplayPort", 0 },
162 };
163
164 static struct drm_prop_enum_list drm_encoder_enum_list[] =
165 { { DRM_MODE_ENCODER_NONE, "None" },
166 { DRM_MODE_ENCODER_DAC, "DAC" },
167 { DRM_MODE_ENCODER_TMDS, "TMDS" },
168 { DRM_MODE_ENCODER_LVDS, "LVDS" },
169 { DRM_MODE_ENCODER_TVDAC, "TV" },
170 };
171
172 char *drm_get_encoder_name(struct drm_encoder *encoder)
173 {
174 static char buf[32];
175
176 snprintf(buf, 32, "%s-%d",
177 drm_encoder_enum_list[encoder->encoder_type].name,
178 encoder->base.id);
179 return buf;
180 }
181 EXPORT_SYMBOL(drm_get_encoder_name);
182
183 char *drm_get_connector_name(struct drm_connector *connector)
184 {
185 static char buf[32];
186
187 snprintf(buf, 32, "%s-%d",
188 drm_connector_enum_list[connector->connector_type].name,
189 connector->connector_type_id);
190 return buf;
191 }
192 EXPORT_SYMBOL(drm_get_connector_name);
193
194 char *drm_get_connector_status_name(enum drm_connector_status status)
195 {
196 if (status == connector_status_connected)
197 return "connected";
198 else if (status == connector_status_disconnected)
199 return "disconnected";
200 else
201 return "unknown";
202 }
203
204 /**
205 * drm_mode_object_get - allocate a new identifier
206 * @dev: DRM device
207 * @ptr: object pointer, used to generate unique ID
208 * @type: object type
209 *
210 * LOCKING:
211 *
212 * Create a unique identifier based on @ptr in @dev's identifier space. Used
213 * for tracking modes, CRTCs and connectors.
214 *
215 * RETURNS:
216 * New unique (relative to other objects in @dev) integer identifier for the
217 * object.
218 */
219 static int drm_mode_object_get(struct drm_device *dev,
220 struct drm_mode_object *obj, uint32_t obj_type)
221 {
222 int new_id = 0;
223 int ret;
224
225 again:
226 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
227 DRM_ERROR("Ran out memory getting a mode number\n");
228 return -EINVAL;
229 }
230
231 mutex_lock(&dev->mode_config.idr_mutex);
232 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
233 mutex_unlock(&dev->mode_config.idr_mutex);
234 if (ret == -EAGAIN)
235 goto again;
236
237 obj->id = new_id;
238 obj->type = obj_type;
239 return 0;
240 }
241
242 /**
243 * drm_mode_object_put - free an identifer
244 * @dev: DRM device
245 * @id: ID to free
246 *
247 * LOCKING:
248 * Caller must hold DRM mode_config lock.
249 *
250 * Free @id from @dev's unique identifier pool.
251 */
252 static void drm_mode_object_put(struct drm_device *dev,
253 struct drm_mode_object *object)
254 {
255 mutex_lock(&dev->mode_config.idr_mutex);
256 idr_remove(&dev->mode_config.crtc_idr, object->id);
257 mutex_unlock(&dev->mode_config.idr_mutex);
258 }
259
260 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
261 uint32_t id, uint32_t type)
262 {
263 struct drm_mode_object *obj = NULL;
264
265 mutex_lock(&dev->mode_config.idr_mutex);
266 obj = idr_find(&dev->mode_config.crtc_idr, id);
267 if (!obj || (obj->type != type) || (obj->id != id))
268 obj = NULL;
269 mutex_unlock(&dev->mode_config.idr_mutex);
270
271 return obj;
272 }
273 EXPORT_SYMBOL(drm_mode_object_find);
274
275 /**
276 * drm_framebuffer_init - initialize a framebuffer
277 * @dev: DRM device
278 *
279 * LOCKING:
280 * Caller must hold mode config lock.
281 *
282 * Allocates an ID for the framebuffer's parent mode object, sets its mode
283 * functions & device file and adds it to the master fd list.
284 *
285 * RETURNS:
286 * Zero on success, error code on failure.
287 */
288 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
289 const struct drm_framebuffer_funcs *funcs)
290 {
291 int ret;
292
293 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
294 if (ret) {
295 return ret;
296 }
297
298 fb->dev = dev;
299 fb->funcs = funcs;
300 dev->mode_config.num_fb++;
301 list_add(&fb->head, &dev->mode_config.fb_list);
302
303 return 0;
304 }
305 EXPORT_SYMBOL(drm_framebuffer_init);
306
307 /**
308 * drm_framebuffer_cleanup - remove a framebuffer object
309 * @fb: framebuffer to remove
310 *
311 * LOCKING:
312 * Caller must hold mode config lock.
313 *
314 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
315 * it, setting it to NULL.
316 */
317 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
318 {
319 struct drm_device *dev = fb->dev;
320 struct drm_crtc *crtc;
321 struct drm_mode_set set;
322 int ret;
323
324 /* remove from any CRTC */
325 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
326 if (crtc->fb == fb) {
327 /* should turn off the crtc */
328 memset(&set, 0, sizeof(struct drm_mode_set));
329 set.crtc = crtc;
330 set.fb = NULL;
331 ret = crtc->funcs->set_config(&set);
332 if (ret)
333 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
334 }
335 }
336
337 drm_mode_object_put(dev, &fb->base);
338 list_del(&fb->head);
339 dev->mode_config.num_fb--;
340 }
341 EXPORT_SYMBOL(drm_framebuffer_cleanup);
342
343 /**
344 * drm_crtc_init - Initialise a new CRTC object
345 * @dev: DRM device
346 * @crtc: CRTC object to init
347 * @funcs: callbacks for the new CRTC
348 *
349 * LOCKING:
350 * Caller must hold mode config lock.
351 *
352 * Inits a new object created as base part of an driver crtc object.
353 */
354 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
355 const struct drm_crtc_funcs *funcs)
356 {
357 crtc->dev = dev;
358 crtc->funcs = funcs;
359
360 mutex_lock(&dev->mode_config.mutex);
361 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
362
363 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
364 dev->mode_config.num_crtc++;
365 mutex_unlock(&dev->mode_config.mutex);
366 }
367 EXPORT_SYMBOL(drm_crtc_init);
368
369 /**
370 * drm_crtc_cleanup - Cleans up the core crtc usage.
371 * @crtc: CRTC to cleanup
372 *
373 * LOCKING:
374 * Caller must hold mode config lock.
375 *
376 * Cleanup @crtc. Removes from drm modesetting space
377 * does NOT free object, caller does that.
378 */
379 void drm_crtc_cleanup(struct drm_crtc *crtc)
380 {
381 struct drm_device *dev = crtc->dev;
382
383 if (crtc->gamma_store) {
384 kfree(crtc->gamma_store);
385 crtc->gamma_store = NULL;
386 }
387
388 drm_mode_object_put(dev, &crtc->base);
389 list_del(&crtc->head);
390 dev->mode_config.num_crtc--;
391 }
392 EXPORT_SYMBOL(drm_crtc_cleanup);
393
394 /**
395 * drm_mode_probed_add - add a mode to a connector's probed mode list
396 * @connector: connector the new mode
397 * @mode: mode data
398 *
399 * LOCKING:
400 * Caller must hold mode config lock.
401 *
402 * Add @mode to @connector's mode list for later use.
403 */
404 void drm_mode_probed_add(struct drm_connector *connector,
405 struct drm_display_mode *mode)
406 {
407 list_add(&mode->head, &connector->probed_modes);
408 }
409 EXPORT_SYMBOL(drm_mode_probed_add);
410
411 /**
412 * drm_mode_remove - remove and free a mode
413 * @connector: connector list to modify
414 * @mode: mode to remove
415 *
416 * LOCKING:
417 * Caller must hold mode config lock.
418 *
419 * Remove @mode from @connector's mode list, then free it.
420 */
421 void drm_mode_remove(struct drm_connector *connector,
422 struct drm_display_mode *mode)
423 {
424 list_del(&mode->head);
425 kfree(mode);
426 }
427 EXPORT_SYMBOL(drm_mode_remove);
428
429 /**
430 * drm_connector_init - Init a preallocated connector
431 * @dev: DRM device
432 * @connector: the connector to init
433 * @funcs: callbacks for this connector
434 * @name: user visible name of the connector
435 *
436 * LOCKING:
437 * Caller must hold @dev's mode_config lock.
438 *
439 * Initialises a preallocated connector. Connectors should be
440 * subclassed as part of driver connector objects.
441 */
442 void drm_connector_init(struct drm_device *dev,
443 struct drm_connector *connector,
444 const struct drm_connector_funcs *funcs,
445 int connector_type)
446 {
447 mutex_lock(&dev->mode_config.mutex);
448
449 connector->dev = dev;
450 connector->funcs = funcs;
451 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
452 connector->connector_type = connector_type;
453 connector->connector_type_id =
454 ++drm_connector_enum_list[connector_type].count; /* TODO */
455 INIT_LIST_HEAD(&connector->user_modes);
456 INIT_LIST_HEAD(&connector->probed_modes);
457 INIT_LIST_HEAD(&connector->modes);
458 connector->edid_blob_ptr = NULL;
459
460 list_add_tail(&connector->head, &dev->mode_config.connector_list);
461 dev->mode_config.num_connector++;
462
463 drm_connector_attach_property(connector,
464 dev->mode_config.edid_property, 0);
465
466 drm_connector_attach_property(connector,
467 dev->mode_config.dpms_property, 0);
468
469 mutex_unlock(&dev->mode_config.mutex);
470 }
471 EXPORT_SYMBOL(drm_connector_init);
472
473 /**
474 * drm_connector_cleanup - cleans up an initialised connector
475 * @connector: connector to cleanup
476 *
477 * LOCKING:
478 * Caller must hold @dev's mode_config lock.
479 *
480 * Cleans up the connector but doesn't free the object.
481 */
482 void drm_connector_cleanup(struct drm_connector *connector)
483 {
484 struct drm_device *dev = connector->dev;
485 struct drm_display_mode *mode, *t;
486
487 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
488 drm_mode_remove(connector, mode);
489
490 list_for_each_entry_safe(mode, t, &connector->modes, head)
491 drm_mode_remove(connector, mode);
492
493 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
494 drm_mode_remove(connector, mode);
495
496 kfree(connector->fb_helper_private);
497 mutex_lock(&dev->mode_config.mutex);
498 drm_mode_object_put(dev, &connector->base);
499 list_del(&connector->head);
500 mutex_unlock(&dev->mode_config.mutex);
501 }
502 EXPORT_SYMBOL(drm_connector_cleanup);
503
504 void drm_encoder_init(struct drm_device *dev,
505 struct drm_encoder *encoder,
506 const struct drm_encoder_funcs *funcs,
507 int encoder_type)
508 {
509 mutex_lock(&dev->mode_config.mutex);
510
511 encoder->dev = dev;
512
513 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
514 encoder->encoder_type = encoder_type;
515 encoder->funcs = funcs;
516
517 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
518 dev->mode_config.num_encoder++;
519
520 mutex_unlock(&dev->mode_config.mutex);
521 }
522 EXPORT_SYMBOL(drm_encoder_init);
523
524 void drm_encoder_cleanup(struct drm_encoder *encoder)
525 {
526 struct drm_device *dev = encoder->dev;
527 mutex_lock(&dev->mode_config.mutex);
528 drm_mode_object_put(dev, &encoder->base);
529 list_del(&encoder->head);
530 mutex_unlock(&dev->mode_config.mutex);
531 }
532 EXPORT_SYMBOL(drm_encoder_cleanup);
533
534 /**
535 * drm_mode_create - create a new display mode
536 * @dev: DRM device
537 *
538 * LOCKING:
539 * Caller must hold DRM mode_config lock.
540 *
541 * Create a new drm_display_mode, give it an ID, and return it.
542 *
543 * RETURNS:
544 * Pointer to new mode on success, NULL on error.
545 */
546 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
547 {
548 struct drm_display_mode *nmode;
549
550 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
551 if (!nmode)
552 return NULL;
553
554 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
555 return nmode;
556 }
557 EXPORT_SYMBOL(drm_mode_create);
558
559 /**
560 * drm_mode_destroy - remove a mode
561 * @dev: DRM device
562 * @mode: mode to remove
563 *
564 * LOCKING:
565 * Caller must hold mode config lock.
566 *
567 * Free @mode's unique identifier, then free it.
568 */
569 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
570 {
571 drm_mode_object_put(dev, &mode->base);
572
573 kfree(mode);
574 }
575 EXPORT_SYMBOL(drm_mode_destroy);
576
577 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
578 {
579 struct drm_property *edid;
580 struct drm_property *dpms;
581 int i;
582
583 /*
584 * Standard properties (apply to all connectors)
585 */
586 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
587 DRM_MODE_PROP_IMMUTABLE,
588 "EDID", 0);
589 dev->mode_config.edid_property = edid;
590
591 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
592 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
593 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
594 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
595 drm_dpms_enum_list[i].name);
596 dev->mode_config.dpms_property = dpms;
597
598 return 0;
599 }
600
601 /**
602 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
603 * @dev: DRM device
604 *
605 * Called by a driver the first time a DVI-I connector is made.
606 */
607 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
608 {
609 struct drm_property *dvi_i_selector;
610 struct drm_property *dvi_i_subconnector;
611 int i;
612
613 if (dev->mode_config.dvi_i_select_subconnector_property)
614 return 0;
615
616 dvi_i_selector =
617 drm_property_create(dev, DRM_MODE_PROP_ENUM,
618 "select subconnector",
619 ARRAY_SIZE(drm_dvi_i_select_enum_list));
620 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
621 drm_property_add_enum(dvi_i_selector, i,
622 drm_dvi_i_select_enum_list[i].type,
623 drm_dvi_i_select_enum_list[i].name);
624 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
625
626 dvi_i_subconnector =
627 drm_property_create(dev, DRM_MODE_PROP_ENUM |
628 DRM_MODE_PROP_IMMUTABLE,
629 "subconnector",
630 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
631 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
632 drm_property_add_enum(dvi_i_subconnector, i,
633 drm_dvi_i_subconnector_enum_list[i].type,
634 drm_dvi_i_subconnector_enum_list[i].name);
635 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
636
637 return 0;
638 }
639 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
640
641 /**
642 * drm_create_tv_properties - create TV specific connector properties
643 * @dev: DRM device
644 * @num_modes: number of different TV formats (modes) supported
645 * @modes: array of pointers to strings containing name of each format
646 *
647 * Called by a driver's TV initialization routine, this function creates
648 * the TV specific connector properties for a given device. Caller is
649 * responsible for allocating a list of format names and passing them to
650 * this routine.
651 */
652 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
653 char *modes[])
654 {
655 struct drm_property *tv_selector;
656 struct drm_property *tv_subconnector;
657 int i;
658
659 if (dev->mode_config.tv_select_subconnector_property)
660 return 0;
661
662 /*
663 * Basic connector properties
664 */
665 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
666 "select subconnector",
667 ARRAY_SIZE(drm_tv_select_enum_list));
668 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
669 drm_property_add_enum(tv_selector, i,
670 drm_tv_select_enum_list[i].type,
671 drm_tv_select_enum_list[i].name);
672 dev->mode_config.tv_select_subconnector_property = tv_selector;
673
674 tv_subconnector =
675 drm_property_create(dev, DRM_MODE_PROP_ENUM |
676 DRM_MODE_PROP_IMMUTABLE, "subconnector",
677 ARRAY_SIZE(drm_tv_subconnector_enum_list));
678 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
679 drm_property_add_enum(tv_subconnector, i,
680 drm_tv_subconnector_enum_list[i].type,
681 drm_tv_subconnector_enum_list[i].name);
682 dev->mode_config.tv_subconnector_property = tv_subconnector;
683
684 /*
685 * Other, TV specific properties: margins & TV modes.
686 */
687 dev->mode_config.tv_left_margin_property =
688 drm_property_create(dev, DRM_MODE_PROP_RANGE,
689 "left margin", 2);
690 dev->mode_config.tv_left_margin_property->values[0] = 0;
691 dev->mode_config.tv_left_margin_property->values[1] = 100;
692
693 dev->mode_config.tv_right_margin_property =
694 drm_property_create(dev, DRM_MODE_PROP_RANGE,
695 "right margin", 2);
696 dev->mode_config.tv_right_margin_property->values[0] = 0;
697 dev->mode_config.tv_right_margin_property->values[1] = 100;
698
699 dev->mode_config.tv_top_margin_property =
700 drm_property_create(dev, DRM_MODE_PROP_RANGE,
701 "top margin", 2);
702 dev->mode_config.tv_top_margin_property->values[0] = 0;
703 dev->mode_config.tv_top_margin_property->values[1] = 100;
704
705 dev->mode_config.tv_bottom_margin_property =
706 drm_property_create(dev, DRM_MODE_PROP_RANGE,
707 "bottom margin", 2);
708 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
709 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
710
711 dev->mode_config.tv_mode_property =
712 drm_property_create(dev, DRM_MODE_PROP_ENUM,
713 "mode", num_modes);
714 for (i = 0; i < num_modes; i++)
715 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
716 i, modes[i]);
717
718 dev->mode_config.tv_brightness_property =
719 drm_property_create(dev, DRM_MODE_PROP_RANGE,
720 "brightness", 2);
721 dev->mode_config.tv_brightness_property->values[0] = 0;
722 dev->mode_config.tv_brightness_property->values[1] = 100;
723
724 dev->mode_config.tv_contrast_property =
725 drm_property_create(dev, DRM_MODE_PROP_RANGE,
726 "contrast", 2);
727 dev->mode_config.tv_contrast_property->values[0] = 0;
728 dev->mode_config.tv_contrast_property->values[1] = 100;
729
730 dev->mode_config.tv_flicker_reduction_property =
731 drm_property_create(dev, DRM_MODE_PROP_RANGE,
732 "flicker reduction", 2);
733 dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
734 dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
735
736 dev->mode_config.tv_overscan_property =
737 drm_property_create(dev, DRM_MODE_PROP_RANGE,
738 "overscan", 2);
739 dev->mode_config.tv_overscan_property->values[0] = 0;
740 dev->mode_config.tv_overscan_property->values[1] = 100;
741
742 dev->mode_config.tv_saturation_property =
743 drm_property_create(dev, DRM_MODE_PROP_RANGE,
744 "saturation", 2);
745 dev->mode_config.tv_saturation_property->values[0] = 0;
746 dev->mode_config.tv_saturation_property->values[1] = 100;
747
748 dev->mode_config.tv_hue_property =
749 drm_property_create(dev, DRM_MODE_PROP_RANGE,
750 "hue", 2);
751 dev->mode_config.tv_hue_property->values[0] = 0;
752 dev->mode_config.tv_hue_property->values[1] = 100;
753
754 return 0;
755 }
756 EXPORT_SYMBOL(drm_mode_create_tv_properties);
757
758 /**
759 * drm_mode_create_scaling_mode_property - create scaling mode property
760 * @dev: DRM device
761 *
762 * Called by a driver the first time it's needed, must be attached to desired
763 * connectors.
764 */
765 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
766 {
767 struct drm_property *scaling_mode;
768 int i;
769
770 if (dev->mode_config.scaling_mode_property)
771 return 0;
772
773 scaling_mode =
774 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
775 ARRAY_SIZE(drm_scaling_mode_enum_list));
776 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
777 drm_property_add_enum(scaling_mode, i,
778 drm_scaling_mode_enum_list[i].type,
779 drm_scaling_mode_enum_list[i].name);
780
781 dev->mode_config.scaling_mode_property = scaling_mode;
782
783 return 0;
784 }
785 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
786
787 /**
788 * drm_mode_create_dithering_property - create dithering property
789 * @dev: DRM device
790 *
791 * Called by a driver the first time it's needed, must be attached to desired
792 * connectors.
793 */
794 int drm_mode_create_dithering_property(struct drm_device *dev)
795 {
796 struct drm_property *dithering_mode;
797 int i;
798
799 if (dev->mode_config.dithering_mode_property)
800 return 0;
801
802 dithering_mode =
803 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
804 ARRAY_SIZE(drm_dithering_mode_enum_list));
805 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
806 drm_property_add_enum(dithering_mode, i,
807 drm_dithering_mode_enum_list[i].type,
808 drm_dithering_mode_enum_list[i].name);
809 dev->mode_config.dithering_mode_property = dithering_mode;
810
811 return 0;
812 }
813 EXPORT_SYMBOL(drm_mode_create_dithering_property);
814
815 /**
816 * drm_mode_create_dirty_property - create dirty property
817 * @dev: DRM device
818 *
819 * Called by a driver the first time it's needed, must be attached to desired
820 * connectors.
821 */
822 int drm_mode_create_dirty_info_property(struct drm_device *dev)
823 {
824 struct drm_property *dirty_info;
825 int i;
826
827 if (dev->mode_config.dirty_info_property)
828 return 0;
829
830 dirty_info =
831 drm_property_create(dev, DRM_MODE_PROP_ENUM |
832 DRM_MODE_PROP_IMMUTABLE,
833 "dirty",
834 ARRAY_SIZE(drm_dirty_info_enum_list));
835 for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
836 drm_property_add_enum(dirty_info, i,
837 drm_dirty_info_enum_list[i].type,
838 drm_dirty_info_enum_list[i].name);
839 dev->mode_config.dirty_info_property = dirty_info;
840
841 return 0;
842 }
843 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
844
845 /**
846 * drm_mode_config_init - initialize DRM mode_configuration structure
847 * @dev: DRM device
848 *
849 * LOCKING:
850 * None, should happen single threaded at init time.
851 *
852 * Initialize @dev's mode_config structure, used for tracking the graphics
853 * configuration of @dev.
854 */
855 void drm_mode_config_init(struct drm_device *dev)
856 {
857 mutex_init(&dev->mode_config.mutex);
858 mutex_init(&dev->mode_config.idr_mutex);
859 INIT_LIST_HEAD(&dev->mode_config.fb_list);
860 INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
861 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
862 INIT_LIST_HEAD(&dev->mode_config.connector_list);
863 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
864 INIT_LIST_HEAD(&dev->mode_config.property_list);
865 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
866 idr_init(&dev->mode_config.crtc_idr);
867
868 mutex_lock(&dev->mode_config.mutex);
869 drm_mode_create_standard_connector_properties(dev);
870 mutex_unlock(&dev->mode_config.mutex);
871
872 /* Just to be sure */
873 dev->mode_config.num_fb = 0;
874 dev->mode_config.num_connector = 0;
875 dev->mode_config.num_crtc = 0;
876 dev->mode_config.num_encoder = 0;
877 }
878 EXPORT_SYMBOL(drm_mode_config_init);
879
880 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
881 {
882 uint32_t total_objects = 0;
883
884 total_objects += dev->mode_config.num_crtc;
885 total_objects += dev->mode_config.num_connector;
886 total_objects += dev->mode_config.num_encoder;
887
888 if (total_objects == 0)
889 return -EINVAL;
890
891 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
892 if (!group->id_list)
893 return -ENOMEM;
894
895 group->num_crtcs = 0;
896 group->num_connectors = 0;
897 group->num_encoders = 0;
898 return 0;
899 }
900
901 int drm_mode_group_init_legacy_group(struct drm_device *dev,
902 struct drm_mode_group *group)
903 {
904 struct drm_crtc *crtc;
905 struct drm_encoder *encoder;
906 struct drm_connector *connector;
907 int ret;
908
909 if ((ret = drm_mode_group_init(dev, group)))
910 return ret;
911
912 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
913 group->id_list[group->num_crtcs++] = crtc->base.id;
914
915 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
916 group->id_list[group->num_crtcs + group->num_encoders++] =
917 encoder->base.id;
918
919 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
920 group->id_list[group->num_crtcs + group->num_encoders +
921 group->num_connectors++] = connector->base.id;
922
923 return 0;
924 }
925
926 /**
927 * drm_mode_config_cleanup - free up DRM mode_config info
928 * @dev: DRM device
929 *
930 * LOCKING:
931 * Caller must hold mode config lock.
932 *
933 * Free up all the connectors and CRTCs associated with this DRM device, then
934 * free up the framebuffers and associated buffer objects.
935 *
936 * FIXME: cleanup any dangling user buffer objects too
937 */
938 void drm_mode_config_cleanup(struct drm_device *dev)
939 {
940 struct drm_connector *connector, *ot;
941 struct drm_crtc *crtc, *ct;
942 struct drm_encoder *encoder, *enct;
943 struct drm_framebuffer *fb, *fbt;
944 struct drm_property *property, *pt;
945
946 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
947 head) {
948 encoder->funcs->destroy(encoder);
949 }
950
951 list_for_each_entry_safe(connector, ot,
952 &dev->mode_config.connector_list, head) {
953 connector->funcs->destroy(connector);
954 }
955
956 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
957 head) {
958 drm_property_destroy(dev, property);
959 }
960
961 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
962 fb->funcs->destroy(fb);
963 }
964
965 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
966 crtc->funcs->destroy(crtc);
967 }
968
969 }
970 EXPORT_SYMBOL(drm_mode_config_cleanup);
971
972 /**
973 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
974 * @out: drm_mode_modeinfo struct to return to the user
975 * @in: drm_display_mode to use
976 *
977 * LOCKING:
978 * None.
979 *
980 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
981 * the user.
982 */
983 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
984 struct drm_display_mode *in)
985 {
986 out->clock = in->clock;
987 out->hdisplay = in->hdisplay;
988 out->hsync_start = in->hsync_start;
989 out->hsync_end = in->hsync_end;
990 out->htotal = in->htotal;
991 out->hskew = in->hskew;
992 out->vdisplay = in->vdisplay;
993 out->vsync_start = in->vsync_start;
994 out->vsync_end = in->vsync_end;
995 out->vtotal = in->vtotal;
996 out->vscan = in->vscan;
997 out->vrefresh = in->vrefresh;
998 out->flags = in->flags;
999 out->type = in->type;
1000 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1001 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1002 }
1003
1004 /**
1005 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1006 * @out: drm_display_mode to return to the user
1007 * @in: drm_mode_modeinfo to use
1008 *
1009 * LOCKING:
1010 * None.
1011 *
1012 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1013 * the caller.
1014 */
1015 void drm_crtc_convert_umode(struct drm_display_mode *out,
1016 struct drm_mode_modeinfo *in)
1017 {
1018 out->clock = in->clock;
1019 out->hdisplay = in->hdisplay;
1020 out->hsync_start = in->hsync_start;
1021 out->hsync_end = in->hsync_end;
1022 out->htotal = in->htotal;
1023 out->hskew = in->hskew;
1024 out->vdisplay = in->vdisplay;
1025 out->vsync_start = in->vsync_start;
1026 out->vsync_end = in->vsync_end;
1027 out->vtotal = in->vtotal;
1028 out->vscan = in->vscan;
1029 out->vrefresh = in->vrefresh;
1030 out->flags = in->flags;
1031 out->type = in->type;
1032 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1033 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1034 }
1035
1036 /**
1037 * drm_mode_getresources - get graphics configuration
1038 * @inode: inode from the ioctl
1039 * @filp: file * from the ioctl
1040 * @cmd: cmd from ioctl
1041 * @arg: arg from ioctl
1042 *
1043 * LOCKING:
1044 * Takes mode config lock.
1045 *
1046 * Construct a set of configuration description structures and return
1047 * them to the user, including CRTC, connector and framebuffer configuration.
1048 *
1049 * Called by the user via ioctl.
1050 *
1051 * RETURNS:
1052 * Zero on success, errno on failure.
1053 */
1054 int drm_mode_getresources(struct drm_device *dev, void *data,
1055 struct drm_file *file_priv)
1056 {
1057 struct drm_mode_card_res *card_res = data;
1058 struct list_head *lh;
1059 struct drm_framebuffer *fb;
1060 struct drm_connector *connector;
1061 struct drm_crtc *crtc;
1062 struct drm_encoder *encoder;
1063 int ret = 0;
1064 int connector_count = 0;
1065 int crtc_count = 0;
1066 int fb_count = 0;
1067 int encoder_count = 0;
1068 int copied = 0, i;
1069 uint32_t __user *fb_id;
1070 uint32_t __user *crtc_id;
1071 uint32_t __user *connector_id;
1072 uint32_t __user *encoder_id;
1073 struct drm_mode_group *mode_group;
1074
1075 mutex_lock(&dev->mode_config.mutex);
1076
1077 /*
1078 * For the non-control nodes we need to limit the list of resources
1079 * by IDs in the group list for this node
1080 */
1081 list_for_each(lh, &file_priv->fbs)
1082 fb_count++;
1083
1084 mode_group = &file_priv->master->minor->mode_group;
1085 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1086
1087 list_for_each(lh, &dev->mode_config.crtc_list)
1088 crtc_count++;
1089
1090 list_for_each(lh, &dev->mode_config.connector_list)
1091 connector_count++;
1092
1093 list_for_each(lh, &dev->mode_config.encoder_list)
1094 encoder_count++;
1095 } else {
1096
1097 crtc_count = mode_group->num_crtcs;
1098 connector_count = mode_group->num_connectors;
1099 encoder_count = mode_group->num_encoders;
1100 }
1101
1102 card_res->max_height = dev->mode_config.max_height;
1103 card_res->min_height = dev->mode_config.min_height;
1104 card_res->max_width = dev->mode_config.max_width;
1105 card_res->min_width = dev->mode_config.min_width;
1106
1107 /* handle this in 4 parts */
1108 /* FBs */
1109 if (card_res->count_fbs >= fb_count) {
1110 copied = 0;
1111 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1112 list_for_each_entry(fb, &file_priv->fbs, head) {
1113 if (put_user(fb->base.id, fb_id + copied)) {
1114 ret = -EFAULT;
1115 goto out;
1116 }
1117 copied++;
1118 }
1119 }
1120 card_res->count_fbs = fb_count;
1121
1122 /* CRTCs */
1123 if (card_res->count_crtcs >= crtc_count) {
1124 copied = 0;
1125 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1126 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1127 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1128 head) {
1129 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1130 if (put_user(crtc->base.id, crtc_id + copied)) {
1131 ret = -EFAULT;
1132 goto out;
1133 }
1134 copied++;
1135 }
1136 } else {
1137 for (i = 0; i < mode_group->num_crtcs; i++) {
1138 if (put_user(mode_group->id_list[i],
1139 crtc_id + copied)) {
1140 ret = -EFAULT;
1141 goto out;
1142 }
1143 copied++;
1144 }
1145 }
1146 }
1147 card_res->count_crtcs = crtc_count;
1148
1149 /* Encoders */
1150 if (card_res->count_encoders >= encoder_count) {
1151 copied = 0;
1152 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1153 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1154 list_for_each_entry(encoder,
1155 &dev->mode_config.encoder_list,
1156 head) {
1157 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1158 encoder->base.id);
1159 if (put_user(encoder->base.id, encoder_id +
1160 copied)) {
1161 ret = -EFAULT;
1162 goto out;
1163 }
1164 copied++;
1165 }
1166 } else {
1167 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1168 if (put_user(mode_group->id_list[i],
1169 encoder_id + copied)) {
1170 ret = -EFAULT;
1171 goto out;
1172 }
1173 copied++;
1174 }
1175
1176 }
1177 }
1178 card_res->count_encoders = encoder_count;
1179
1180 /* Connectors */
1181 if (card_res->count_connectors >= connector_count) {
1182 copied = 0;
1183 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1184 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1185 list_for_each_entry(connector,
1186 &dev->mode_config.connector_list,
1187 head) {
1188 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1189 connector->base.id);
1190 if (put_user(connector->base.id,
1191 connector_id + copied)) {
1192 ret = -EFAULT;
1193 goto out;
1194 }
1195 copied++;
1196 }
1197 } else {
1198 int start = mode_group->num_crtcs +
1199 mode_group->num_encoders;
1200 for (i = start; i < start + mode_group->num_connectors; i++) {
1201 if (put_user(mode_group->id_list[i],
1202 connector_id + copied)) {
1203 ret = -EFAULT;
1204 goto out;
1205 }
1206 copied++;
1207 }
1208 }
1209 }
1210 card_res->count_connectors = connector_count;
1211
1212 DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1213 card_res->count_connectors, card_res->count_encoders);
1214
1215 out:
1216 mutex_unlock(&dev->mode_config.mutex);
1217 return ret;
1218 }
1219
1220 /**
1221 * drm_mode_getcrtc - get CRTC configuration
1222 * @inode: inode from the ioctl
1223 * @filp: file * from the ioctl
1224 * @cmd: cmd from ioctl
1225 * @arg: arg from ioctl
1226 *
1227 * LOCKING:
1228 * Caller? (FIXME)
1229 *
1230 * Construct a CRTC configuration structure to return to the user.
1231 *
1232 * Called by the user via ioctl.
1233 *
1234 * RETURNS:
1235 * Zero on success, errno on failure.
1236 */
1237 int drm_mode_getcrtc(struct drm_device *dev,
1238 void *data, struct drm_file *file_priv)
1239 {
1240 struct drm_mode_crtc *crtc_resp = data;
1241 struct drm_crtc *crtc;
1242 struct drm_mode_object *obj;
1243 int ret = 0;
1244
1245 mutex_lock(&dev->mode_config.mutex);
1246
1247 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1248 DRM_MODE_OBJECT_CRTC);
1249 if (!obj) {
1250 ret = -EINVAL;
1251 goto out;
1252 }
1253 crtc = obj_to_crtc(obj);
1254
1255 crtc_resp->x = crtc->x;
1256 crtc_resp->y = crtc->y;
1257 crtc_resp->gamma_size = crtc->gamma_size;
1258 if (crtc->fb)
1259 crtc_resp->fb_id = crtc->fb->base.id;
1260 else
1261 crtc_resp->fb_id = 0;
1262
1263 if (crtc->enabled) {
1264
1265 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1266 crtc_resp->mode_valid = 1;
1267
1268 } else {
1269 crtc_resp->mode_valid = 0;
1270 }
1271
1272 out:
1273 mutex_unlock(&dev->mode_config.mutex);
1274 return ret;
1275 }
1276
1277 /**
1278 * drm_mode_getconnector - get connector configuration
1279 * @inode: inode from the ioctl
1280 * @filp: file * from the ioctl
1281 * @cmd: cmd from ioctl
1282 * @arg: arg from ioctl
1283 *
1284 * LOCKING:
1285 * Caller? (FIXME)
1286 *
1287 * Construct a connector configuration structure to return to the user.
1288 *
1289 * Called by the user via ioctl.
1290 *
1291 * RETURNS:
1292 * Zero on success, errno on failure.
1293 */
1294 int drm_mode_getconnector(struct drm_device *dev, void *data,
1295 struct drm_file *file_priv)
1296 {
1297 struct drm_mode_get_connector *out_resp = data;
1298 struct drm_mode_object *obj;
1299 struct drm_connector *connector;
1300 struct drm_display_mode *mode;
1301 int mode_count = 0;
1302 int props_count = 0;
1303 int encoders_count = 0;
1304 int ret = 0;
1305 int copied = 0;
1306 int i;
1307 struct drm_mode_modeinfo u_mode;
1308 struct drm_mode_modeinfo __user *mode_ptr;
1309 uint32_t __user *prop_ptr;
1310 uint64_t __user *prop_values;
1311 uint32_t __user *encoder_ptr;
1312
1313 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1314
1315 DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1316
1317 mutex_lock(&dev->mode_config.mutex);
1318
1319 obj = drm_mode_object_find(dev, out_resp->connector_id,
1320 DRM_MODE_OBJECT_CONNECTOR);
1321 if (!obj) {
1322 ret = -EINVAL;
1323 goto out;
1324 }
1325 connector = obj_to_connector(obj);
1326
1327 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1328 if (connector->property_ids[i] != 0) {
1329 props_count++;
1330 }
1331 }
1332
1333 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1334 if (connector->encoder_ids[i] != 0) {
1335 encoders_count++;
1336 }
1337 }
1338
1339 if (out_resp->count_modes == 0) {
1340 connector->funcs->fill_modes(connector,
1341 dev->mode_config.max_width,
1342 dev->mode_config.max_height);
1343 }
1344
1345 /* delayed so we get modes regardless of pre-fill_modes state */
1346 list_for_each_entry(mode, &connector->modes, head)
1347 mode_count++;
1348
1349 out_resp->connector_id = connector->base.id;
1350 out_resp->connector_type = connector->connector_type;
1351 out_resp->connector_type_id = connector->connector_type_id;
1352 out_resp->mm_width = connector->display_info.width_mm;
1353 out_resp->mm_height = connector->display_info.height_mm;
1354 out_resp->subpixel = connector->display_info.subpixel_order;
1355 out_resp->connection = connector->status;
1356 if (connector->encoder)
1357 out_resp->encoder_id = connector->encoder->base.id;
1358 else
1359 out_resp->encoder_id = 0;
1360
1361 /*
1362 * This ioctl is called twice, once to determine how much space is
1363 * needed, and the 2nd time to fill it.
1364 */
1365 if ((out_resp->count_modes >= mode_count) && mode_count) {
1366 copied = 0;
1367 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1368 list_for_each_entry(mode, &connector->modes, head) {
1369 drm_crtc_convert_to_umode(&u_mode, mode);
1370 if (copy_to_user(mode_ptr + copied,
1371 &u_mode, sizeof(u_mode))) {
1372 ret = -EFAULT;
1373 goto out;
1374 }
1375 copied++;
1376 }
1377 }
1378 out_resp->count_modes = mode_count;
1379
1380 if ((out_resp->count_props >= props_count) && props_count) {
1381 copied = 0;
1382 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1383 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1384 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1385 if (connector->property_ids[i] != 0) {
1386 if (put_user(connector->property_ids[i],
1387 prop_ptr + copied)) {
1388 ret = -EFAULT;
1389 goto out;
1390 }
1391
1392 if (put_user(connector->property_values[i],
1393 prop_values + copied)) {
1394 ret = -EFAULT;
1395 goto out;
1396 }
1397 copied++;
1398 }
1399 }
1400 }
1401 out_resp->count_props = props_count;
1402
1403 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1404 copied = 0;
1405 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1406 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1407 if (connector->encoder_ids[i] != 0) {
1408 if (put_user(connector->encoder_ids[i],
1409 encoder_ptr + copied)) {
1410 ret = -EFAULT;
1411 goto out;
1412 }
1413 copied++;
1414 }
1415 }
1416 }
1417 out_resp->count_encoders = encoders_count;
1418
1419 out:
1420 mutex_unlock(&dev->mode_config.mutex);
1421 return ret;
1422 }
1423
1424 int drm_mode_getencoder(struct drm_device *dev, void *data,
1425 struct drm_file *file_priv)
1426 {
1427 struct drm_mode_get_encoder *enc_resp = data;
1428 struct drm_mode_object *obj;
1429 struct drm_encoder *encoder;
1430 int ret = 0;
1431
1432 mutex_lock(&dev->mode_config.mutex);
1433 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1434 DRM_MODE_OBJECT_ENCODER);
1435 if (!obj) {
1436 ret = -EINVAL;
1437 goto out;
1438 }
1439 encoder = obj_to_encoder(obj);
1440
1441 if (encoder->crtc)
1442 enc_resp->crtc_id = encoder->crtc->base.id;
1443 else
1444 enc_resp->crtc_id = 0;
1445 enc_resp->encoder_type = encoder->encoder_type;
1446 enc_resp->encoder_id = encoder->base.id;
1447 enc_resp->possible_crtcs = encoder->possible_crtcs;
1448 enc_resp->possible_clones = encoder->possible_clones;
1449
1450 out:
1451 mutex_unlock(&dev->mode_config.mutex);
1452 return ret;
1453 }
1454
1455 /**
1456 * drm_mode_setcrtc - set CRTC configuration
1457 * @inode: inode from the ioctl
1458 * @filp: file * from the ioctl
1459 * @cmd: cmd from ioctl
1460 * @arg: arg from ioctl
1461 *
1462 * LOCKING:
1463 * Caller? (FIXME)
1464 *
1465 * Build a new CRTC configuration based on user request.
1466 *
1467 * Called by the user via ioctl.
1468 *
1469 * RETURNS:
1470 * Zero on success, errno on failure.
1471 */
1472 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1473 struct drm_file *file_priv)
1474 {
1475 struct drm_mode_config *config = &dev->mode_config;
1476 struct drm_mode_crtc *crtc_req = data;
1477 struct drm_mode_object *obj;
1478 struct drm_crtc *crtc, *crtcfb;
1479 struct drm_connector **connector_set = NULL, *connector;
1480 struct drm_framebuffer *fb = NULL;
1481 struct drm_display_mode *mode = NULL;
1482 struct drm_mode_set set;
1483 uint32_t __user *set_connectors_ptr;
1484 int ret = 0;
1485 int i;
1486
1487 mutex_lock(&dev->mode_config.mutex);
1488 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1489 DRM_MODE_OBJECT_CRTC);
1490 if (!obj) {
1491 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1492 ret = -EINVAL;
1493 goto out;
1494 }
1495 crtc = obj_to_crtc(obj);
1496
1497 if (crtc_req->mode_valid) {
1498 /* If we have a mode we need a framebuffer. */
1499 /* If we pass -1, set the mode with the currently bound fb */
1500 if (crtc_req->fb_id == -1) {
1501 list_for_each_entry(crtcfb,
1502 &dev->mode_config.crtc_list, head) {
1503 if (crtcfb == crtc) {
1504 DRM_DEBUG_KMS("Using current fb for "
1505 "setmode\n");
1506 fb = crtc->fb;
1507 }
1508 }
1509 } else {
1510 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1511 DRM_MODE_OBJECT_FB);
1512 if (!obj) {
1513 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1514 crtc_req->fb_id);
1515 ret = -EINVAL;
1516 goto out;
1517 }
1518 fb = obj_to_fb(obj);
1519 }
1520
1521 mode = drm_mode_create(dev);
1522 drm_crtc_convert_umode(mode, &crtc_req->mode);
1523 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1524 }
1525
1526 if (crtc_req->count_connectors == 0 && mode) {
1527 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1528 ret = -EINVAL;
1529 goto out;
1530 }
1531
1532 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1533 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1534 crtc_req->count_connectors);
1535 ret = -EINVAL;
1536 goto out;
1537 }
1538
1539 if (crtc_req->count_connectors > 0) {
1540 u32 out_id;
1541
1542 /* Avoid unbounded kernel memory allocation */
1543 if (crtc_req->count_connectors > config->num_connector) {
1544 ret = -EINVAL;
1545 goto out;
1546 }
1547
1548 connector_set = kmalloc(crtc_req->count_connectors *
1549 sizeof(struct drm_connector *),
1550 GFP_KERNEL);
1551 if (!connector_set) {
1552 ret = -ENOMEM;
1553 goto out;
1554 }
1555
1556 for (i = 0; i < crtc_req->count_connectors; i++) {
1557 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1558 if (get_user(out_id, &set_connectors_ptr[i])) {
1559 ret = -EFAULT;
1560 goto out;
1561 }
1562
1563 obj = drm_mode_object_find(dev, out_id,
1564 DRM_MODE_OBJECT_CONNECTOR);
1565 if (!obj) {
1566 DRM_DEBUG_KMS("Connector id %d unknown\n",
1567 out_id);
1568 ret = -EINVAL;
1569 goto out;
1570 }
1571 connector = obj_to_connector(obj);
1572
1573 connector_set[i] = connector;
1574 }
1575 }
1576
1577 set.crtc = crtc;
1578 set.x = crtc_req->x;
1579 set.y = crtc_req->y;
1580 set.mode = mode;
1581 set.connectors = connector_set;
1582 set.num_connectors = crtc_req->count_connectors;
1583 set.fb = fb;
1584 ret = crtc->funcs->set_config(&set);
1585
1586 out:
1587 kfree(connector_set);
1588 mutex_unlock(&dev->mode_config.mutex);
1589 return ret;
1590 }
1591
1592 int drm_mode_cursor_ioctl(struct drm_device *dev,
1593 void *data, struct drm_file *file_priv)
1594 {
1595 struct drm_mode_cursor *req = data;
1596 struct drm_mode_object *obj;
1597 struct drm_crtc *crtc;
1598 int ret = 0;
1599
1600 if (!req->flags) {
1601 DRM_ERROR("no operation set\n");
1602 return -EINVAL;
1603 }
1604
1605 mutex_lock(&dev->mode_config.mutex);
1606 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1607 if (!obj) {
1608 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1609 ret = -EINVAL;
1610 goto out;
1611 }
1612 crtc = obj_to_crtc(obj);
1613
1614 if (req->flags & DRM_MODE_CURSOR_BO) {
1615 if (!crtc->funcs->cursor_set) {
1616 DRM_ERROR("crtc does not support cursor\n");
1617 ret = -ENXIO;
1618 goto out;
1619 }
1620 /* Turns off the cursor if handle is 0 */
1621 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1622 req->width, req->height);
1623 }
1624
1625 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1626 if (crtc->funcs->cursor_move) {
1627 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1628 } else {
1629 DRM_ERROR("crtc does not support cursor\n");
1630 ret = -EFAULT;
1631 goto out;
1632 }
1633 }
1634 out:
1635 mutex_unlock(&dev->mode_config.mutex);
1636 return ret;
1637 }
1638
1639 /**
1640 * drm_mode_addfb - add an FB to the graphics configuration
1641 * @inode: inode from the ioctl
1642 * @filp: file * from the ioctl
1643 * @cmd: cmd from ioctl
1644 * @arg: arg from ioctl
1645 *
1646 * LOCKING:
1647 * Takes mode config lock.
1648 *
1649 * Add a new FB to the specified CRTC, given a user request.
1650 *
1651 * Called by the user via ioctl.
1652 *
1653 * RETURNS:
1654 * Zero on success, errno on failure.
1655 */
1656 int drm_mode_addfb(struct drm_device *dev,
1657 void *data, struct drm_file *file_priv)
1658 {
1659 struct drm_mode_fb_cmd *r = data;
1660 struct drm_mode_config *config = &dev->mode_config;
1661 struct drm_framebuffer *fb;
1662 int ret = 0;
1663
1664 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1665 DRM_ERROR("mode new framebuffer width not within limits\n");
1666 return -EINVAL;
1667 }
1668 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1669 DRM_ERROR("mode new framebuffer height not within limits\n");
1670 return -EINVAL;
1671 }
1672
1673 mutex_lock(&dev->mode_config.mutex);
1674
1675 /* TODO check buffer is sufficently large */
1676 /* TODO setup destructor callback */
1677
1678 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1679 if (!fb) {
1680 DRM_ERROR("could not create framebuffer\n");
1681 ret = -EINVAL;
1682 goto out;
1683 }
1684
1685 r->fb_id = fb->base.id;
1686 list_add(&fb->filp_head, &file_priv->fbs);
1687
1688 out:
1689 mutex_unlock(&dev->mode_config.mutex);
1690 return ret;
1691 }
1692
1693 /**
1694 * drm_mode_rmfb - remove an FB from the configuration
1695 * @inode: inode from the ioctl
1696 * @filp: file * from the ioctl
1697 * @cmd: cmd from ioctl
1698 * @arg: arg from ioctl
1699 *
1700 * LOCKING:
1701 * Takes mode config lock.
1702 *
1703 * Remove the FB specified by the user.
1704 *
1705 * Called by the user via ioctl.
1706 *
1707 * RETURNS:
1708 * Zero on success, errno on failure.
1709 */
1710 int drm_mode_rmfb(struct drm_device *dev,
1711 void *data, struct drm_file *file_priv)
1712 {
1713 struct drm_mode_object *obj;
1714 struct drm_framebuffer *fb = NULL;
1715 struct drm_framebuffer *fbl = NULL;
1716 uint32_t *id = data;
1717 int ret = 0;
1718 int found = 0;
1719
1720 mutex_lock(&dev->mode_config.mutex);
1721 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1722 /* TODO check that we realy get a framebuffer back. */
1723 if (!obj) {
1724 DRM_ERROR("mode invalid framebuffer id\n");
1725 ret = -EINVAL;
1726 goto out;
1727 }
1728 fb = obj_to_fb(obj);
1729
1730 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1731 if (fb == fbl)
1732 found = 1;
1733
1734 if (!found) {
1735 DRM_ERROR("tried to remove a fb that we didn't own\n");
1736 ret = -EINVAL;
1737 goto out;
1738 }
1739
1740 /* TODO release all crtc connected to the framebuffer */
1741 /* TODO unhock the destructor from the buffer object */
1742
1743 list_del(&fb->filp_head);
1744 fb->funcs->destroy(fb);
1745
1746 out:
1747 mutex_unlock(&dev->mode_config.mutex);
1748 return ret;
1749 }
1750
1751 /**
1752 * drm_mode_getfb - get FB info
1753 * @inode: inode from the ioctl
1754 * @filp: file * from the ioctl
1755 * @cmd: cmd from ioctl
1756 * @arg: arg from ioctl
1757 *
1758 * LOCKING:
1759 * Caller? (FIXME)
1760 *
1761 * Lookup the FB given its ID and return info about it.
1762 *
1763 * Called by the user via ioctl.
1764 *
1765 * RETURNS:
1766 * Zero on success, errno on failure.
1767 */
1768 int drm_mode_getfb(struct drm_device *dev,
1769 void *data, struct drm_file *file_priv)
1770 {
1771 struct drm_mode_fb_cmd *r = data;
1772 struct drm_mode_object *obj;
1773 struct drm_framebuffer *fb;
1774 int ret = 0;
1775
1776 mutex_lock(&dev->mode_config.mutex);
1777 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1778 if (!obj) {
1779 DRM_ERROR("invalid framebuffer id\n");
1780 ret = -EINVAL;
1781 goto out;
1782 }
1783 fb = obj_to_fb(obj);
1784
1785 r->height = fb->height;
1786 r->width = fb->width;
1787 r->depth = fb->depth;
1788 r->bpp = fb->bits_per_pixel;
1789 r->pitch = fb->pitch;
1790 fb->funcs->create_handle(fb, file_priv, &r->handle);
1791
1792 out:
1793 mutex_unlock(&dev->mode_config.mutex);
1794 return ret;
1795 }
1796
1797 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1798 void *data, struct drm_file *file_priv)
1799 {
1800 struct drm_clip_rect __user *clips_ptr;
1801 struct drm_clip_rect *clips = NULL;
1802 struct drm_mode_fb_dirty_cmd *r = data;
1803 struct drm_mode_object *obj;
1804 struct drm_framebuffer *fb;
1805 unsigned flags;
1806 int num_clips;
1807 int ret = 0;
1808
1809 mutex_lock(&dev->mode_config.mutex);
1810 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1811 if (!obj) {
1812 DRM_ERROR("invalid framebuffer id\n");
1813 ret = -EINVAL;
1814 goto out_err1;
1815 }
1816 fb = obj_to_fb(obj);
1817
1818 num_clips = r->num_clips;
1819 clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1820
1821 if (!num_clips != !clips_ptr) {
1822 ret = -EINVAL;
1823 goto out_err1;
1824 }
1825
1826 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1827
1828 /* If userspace annotates copy, clips must come in pairs */
1829 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1830 ret = -EINVAL;
1831 goto out_err1;
1832 }
1833
1834 if (num_clips && clips_ptr) {
1835 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1836 if (!clips) {
1837 ret = -ENOMEM;
1838 goto out_err1;
1839 }
1840
1841 ret = copy_from_user(clips, clips_ptr,
1842 num_clips * sizeof(*clips));
1843 if (ret)
1844 goto out_err2;
1845 }
1846
1847 if (fb->funcs->dirty) {
1848 ret = fb->funcs->dirty(fb, flags, r->color, clips, num_clips);
1849 } else {
1850 ret = -ENOSYS;
1851 goto out_err2;
1852 }
1853
1854 out_err2:
1855 kfree(clips);
1856 out_err1:
1857 mutex_unlock(&dev->mode_config.mutex);
1858 return ret;
1859 }
1860
1861
1862 /**
1863 * drm_fb_release - remove and free the FBs on this file
1864 * @filp: file * from the ioctl
1865 *
1866 * LOCKING:
1867 * Takes mode config lock.
1868 *
1869 * Destroy all the FBs associated with @filp.
1870 *
1871 * Called by the user via ioctl.
1872 *
1873 * RETURNS:
1874 * Zero on success, errno on failure.
1875 */
1876 void drm_fb_release(struct drm_file *priv)
1877 {
1878 struct drm_device *dev = priv->minor->dev;
1879 struct drm_framebuffer *fb, *tfb;
1880
1881 mutex_lock(&dev->mode_config.mutex);
1882 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1883 list_del(&fb->filp_head);
1884 fb->funcs->destroy(fb);
1885 }
1886 mutex_unlock(&dev->mode_config.mutex);
1887 }
1888
1889 /**
1890 * drm_mode_attachmode - add a mode to the user mode list
1891 * @dev: DRM device
1892 * @connector: connector to add the mode to
1893 * @mode: mode to add
1894 *
1895 * Add @mode to @connector's user mode list.
1896 */
1897 static int drm_mode_attachmode(struct drm_device *dev,
1898 struct drm_connector *connector,
1899 struct drm_display_mode *mode)
1900 {
1901 int ret = 0;
1902
1903 list_add_tail(&mode->head, &connector->user_modes);
1904 return ret;
1905 }
1906
1907 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1908 struct drm_display_mode *mode)
1909 {
1910 struct drm_connector *connector;
1911 int ret = 0;
1912 struct drm_display_mode *dup_mode;
1913 int need_dup = 0;
1914 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1915 if (!connector->encoder)
1916 break;
1917 if (connector->encoder->crtc == crtc) {
1918 if (need_dup)
1919 dup_mode = drm_mode_duplicate(dev, mode);
1920 else
1921 dup_mode = mode;
1922 ret = drm_mode_attachmode(dev, connector, dup_mode);
1923 if (ret)
1924 return ret;
1925 need_dup = 1;
1926 }
1927 }
1928 return 0;
1929 }
1930 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1931
1932 static int drm_mode_detachmode(struct drm_device *dev,
1933 struct drm_connector *connector,
1934 struct drm_display_mode *mode)
1935 {
1936 int found = 0;
1937 int ret = 0;
1938 struct drm_display_mode *match_mode, *t;
1939
1940 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1941 if (drm_mode_equal(match_mode, mode)) {
1942 list_del(&match_mode->head);
1943 drm_mode_destroy(dev, match_mode);
1944 found = 1;
1945 break;
1946 }
1947 }
1948
1949 if (!found)
1950 ret = -EINVAL;
1951
1952 return ret;
1953 }
1954
1955 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1956 {
1957 struct drm_connector *connector;
1958
1959 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1960 drm_mode_detachmode(dev, connector, mode);
1961 }
1962 return 0;
1963 }
1964 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1965
1966 /**
1967 * drm_fb_attachmode - Attach a user mode to an connector
1968 * @inode: inode from the ioctl
1969 * @filp: file * from the ioctl
1970 * @cmd: cmd from ioctl
1971 * @arg: arg from ioctl
1972 *
1973 * This attaches a user specified mode to an connector.
1974 * Called by the user via ioctl.
1975 *
1976 * RETURNS:
1977 * Zero on success, errno on failure.
1978 */
1979 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1980 void *data, struct drm_file *file_priv)
1981 {
1982 struct drm_mode_mode_cmd *mode_cmd = data;
1983 struct drm_connector *connector;
1984 struct drm_display_mode *mode;
1985 struct drm_mode_object *obj;
1986 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1987 int ret = 0;
1988
1989 mutex_lock(&dev->mode_config.mutex);
1990
1991 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1992 if (!obj) {
1993 ret = -EINVAL;
1994 goto out;
1995 }
1996 connector = obj_to_connector(obj);
1997
1998 mode = drm_mode_create(dev);
1999 if (!mode) {
2000 ret = -ENOMEM;
2001 goto out;
2002 }
2003
2004 drm_crtc_convert_umode(mode, umode);
2005
2006 ret = drm_mode_attachmode(dev, connector, mode);
2007 out:
2008 mutex_unlock(&dev->mode_config.mutex);
2009 return ret;
2010 }
2011
2012
2013 /**
2014 * drm_fb_detachmode - Detach a user specified mode from an connector
2015 * @inode: inode from the ioctl
2016 * @filp: file * from the ioctl
2017 * @cmd: cmd from ioctl
2018 * @arg: arg from ioctl
2019 *
2020 * Called by the user via ioctl.
2021 *
2022 * RETURNS:
2023 * Zero on success, errno on failure.
2024 */
2025 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2026 void *data, struct drm_file *file_priv)
2027 {
2028 struct drm_mode_object *obj;
2029 struct drm_mode_mode_cmd *mode_cmd = data;
2030 struct drm_connector *connector;
2031 struct drm_display_mode mode;
2032 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2033 int ret = 0;
2034
2035 mutex_lock(&dev->mode_config.mutex);
2036
2037 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2038 if (!obj) {
2039 ret = -EINVAL;
2040 goto out;
2041 }
2042 connector = obj_to_connector(obj);
2043
2044 drm_crtc_convert_umode(&mode, umode);
2045 ret = drm_mode_detachmode(dev, connector, &mode);
2046 out:
2047 mutex_unlock(&dev->mode_config.mutex);
2048 return ret;
2049 }
2050
2051 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2052 const char *name, int num_values)
2053 {
2054 struct drm_property *property = NULL;
2055
2056 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2057 if (!property)
2058 return NULL;
2059
2060 if (num_values) {
2061 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2062 if (!property->values)
2063 goto fail;
2064 }
2065
2066 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2067 property->flags = flags;
2068 property->num_values = num_values;
2069 INIT_LIST_HEAD(&property->enum_blob_list);
2070
2071 if (name)
2072 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2073
2074 list_add_tail(&property->head, &dev->mode_config.property_list);
2075 return property;
2076 fail:
2077 kfree(property);
2078 return NULL;
2079 }
2080 EXPORT_SYMBOL(drm_property_create);
2081
2082 int drm_property_add_enum(struct drm_property *property, int index,
2083 uint64_t value, const char *name)
2084 {
2085 struct drm_property_enum *prop_enum;
2086
2087 if (!(property->flags & DRM_MODE_PROP_ENUM))
2088 return -EINVAL;
2089
2090 if (!list_empty(&property->enum_blob_list)) {
2091 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2092 if (prop_enum->value == value) {
2093 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2094 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2095 return 0;
2096 }
2097 }
2098 }
2099
2100 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2101 if (!prop_enum)
2102 return -ENOMEM;
2103
2104 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2105 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2106 prop_enum->value = value;
2107
2108 property->values[index] = value;
2109 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2110 return 0;
2111 }
2112 EXPORT_SYMBOL(drm_property_add_enum);
2113
2114 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2115 {
2116 struct drm_property_enum *prop_enum, *pt;
2117
2118 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2119 list_del(&prop_enum->head);
2120 kfree(prop_enum);
2121 }
2122
2123 if (property->num_values)
2124 kfree(property->values);
2125 drm_mode_object_put(dev, &property->base);
2126 list_del(&property->head);
2127 kfree(property);
2128 }
2129 EXPORT_SYMBOL(drm_property_destroy);
2130
2131 int drm_connector_attach_property(struct drm_connector *connector,
2132 struct drm_property *property, uint64_t init_val)
2133 {
2134 int i;
2135
2136 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2137 if (connector->property_ids[i] == 0) {
2138 connector->property_ids[i] = property->base.id;
2139 connector->property_values[i] = init_val;
2140 break;
2141 }
2142 }
2143
2144 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2145 return -EINVAL;
2146 return 0;
2147 }
2148 EXPORT_SYMBOL(drm_connector_attach_property);
2149
2150 int drm_connector_property_set_value(struct drm_connector *connector,
2151 struct drm_property *property, uint64_t value)
2152 {
2153 int i;
2154
2155 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2156 if (connector->property_ids[i] == property->base.id) {
2157 connector->property_values[i] = value;
2158 break;
2159 }
2160 }
2161
2162 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2163 return -EINVAL;
2164 return 0;
2165 }
2166 EXPORT_SYMBOL(drm_connector_property_set_value);
2167
2168 int drm_connector_property_get_value(struct drm_connector *connector,
2169 struct drm_property *property, uint64_t *val)
2170 {
2171 int i;
2172
2173 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2174 if (connector->property_ids[i] == property->base.id) {
2175 *val = connector->property_values[i];
2176 break;
2177 }
2178 }
2179
2180 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2181 return -EINVAL;
2182 return 0;
2183 }
2184 EXPORT_SYMBOL(drm_connector_property_get_value);
2185
2186 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2187 void *data, struct drm_file *file_priv)
2188 {
2189 struct drm_mode_object *obj;
2190 struct drm_mode_get_property *out_resp = data;
2191 struct drm_property *property;
2192 int enum_count = 0;
2193 int blob_count = 0;
2194 int value_count = 0;
2195 int ret = 0, i;
2196 int copied;
2197 struct drm_property_enum *prop_enum;
2198 struct drm_mode_property_enum __user *enum_ptr;
2199 struct drm_property_blob *prop_blob;
2200 uint32_t *blob_id_ptr;
2201 uint64_t __user *values_ptr;
2202 uint32_t __user *blob_length_ptr;
2203
2204 mutex_lock(&dev->mode_config.mutex);
2205 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2206 if (!obj) {
2207 ret = -EINVAL;
2208 goto done;
2209 }
2210 property = obj_to_property(obj);
2211
2212 if (property->flags & DRM_MODE_PROP_ENUM) {
2213 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2214 enum_count++;
2215 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2216 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2217 blob_count++;
2218 }
2219
2220 value_count = property->num_values;
2221
2222 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2223 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2224 out_resp->flags = property->flags;
2225
2226 if ((out_resp->count_values >= value_count) && value_count) {
2227 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2228 for (i = 0; i < value_count; i++) {
2229 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2230 ret = -EFAULT;
2231 goto done;
2232 }
2233 }
2234 }
2235 out_resp->count_values = value_count;
2236
2237 if (property->flags & DRM_MODE_PROP_ENUM) {
2238 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2239 copied = 0;
2240 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2241 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2242
2243 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2244 ret = -EFAULT;
2245 goto done;
2246 }
2247
2248 if (copy_to_user(&enum_ptr[copied].name,
2249 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2250 ret = -EFAULT;
2251 goto done;
2252 }
2253 copied++;
2254 }
2255 }
2256 out_resp->count_enum_blobs = enum_count;
2257 }
2258
2259 if (property->flags & DRM_MODE_PROP_BLOB) {
2260 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2261 copied = 0;
2262 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2263 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2264
2265 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2266 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2267 ret = -EFAULT;
2268 goto done;
2269 }
2270
2271 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2272 ret = -EFAULT;
2273 goto done;
2274 }
2275
2276 copied++;
2277 }
2278 }
2279 out_resp->count_enum_blobs = blob_count;
2280 }
2281 done:
2282 mutex_unlock(&dev->mode_config.mutex);
2283 return ret;
2284 }
2285
2286 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2287 void *data)
2288 {
2289 struct drm_property_blob *blob;
2290
2291 if (!length || !data)
2292 return NULL;
2293
2294 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2295 if (!blob)
2296 return NULL;
2297
2298 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2299 blob->length = length;
2300
2301 memcpy(blob->data, data, length);
2302
2303 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2304
2305 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2306 return blob;
2307 }
2308
2309 static void drm_property_destroy_blob(struct drm_device *dev,
2310 struct drm_property_blob *blob)
2311 {
2312 drm_mode_object_put(dev, &blob->base);
2313 list_del(&blob->head);
2314 kfree(blob);
2315 }
2316
2317 int drm_mode_getblob_ioctl(struct drm_device *dev,
2318 void *data, struct drm_file *file_priv)
2319 {
2320 struct drm_mode_object *obj;
2321 struct drm_mode_get_blob *out_resp = data;
2322 struct drm_property_blob *blob;
2323 int ret = 0;
2324 void *blob_ptr;
2325
2326 mutex_lock(&dev->mode_config.mutex);
2327 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2328 if (!obj) {
2329 ret = -EINVAL;
2330 goto done;
2331 }
2332 blob = obj_to_blob(obj);
2333
2334 if (out_resp->length == blob->length) {
2335 blob_ptr = (void *)(unsigned long)out_resp->data;
2336 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2337 ret = -EFAULT;
2338 goto done;
2339 }
2340 }
2341 out_resp->length = blob->length;
2342
2343 done:
2344 mutex_unlock(&dev->mode_config.mutex);
2345 return ret;
2346 }
2347
2348 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2349 struct edid *edid)
2350 {
2351 struct drm_device *dev = connector->dev;
2352 int ret = 0;
2353
2354 if (connector->edid_blob_ptr)
2355 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2356
2357 /* Delete edid, when there is none. */
2358 if (!edid) {
2359 connector->edid_blob_ptr = NULL;
2360 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2361 return ret;
2362 }
2363
2364 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
2365
2366 ret = drm_connector_property_set_value(connector,
2367 dev->mode_config.edid_property,
2368 connector->edid_blob_ptr->base.id);
2369
2370 return ret;
2371 }
2372 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2373
2374 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2375 void *data, struct drm_file *file_priv)
2376 {
2377 struct drm_mode_connector_set_property *out_resp = data;
2378 struct drm_mode_object *obj;
2379 struct drm_property *property;
2380 struct drm_connector *connector;
2381 int ret = -EINVAL;
2382 int i;
2383
2384 mutex_lock(&dev->mode_config.mutex);
2385
2386 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2387 if (!obj) {
2388 goto out;
2389 }
2390 connector = obj_to_connector(obj);
2391
2392 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2393 if (connector->property_ids[i] == out_resp->prop_id)
2394 break;
2395 }
2396
2397 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2398 goto out;
2399 }
2400
2401 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2402 if (!obj) {
2403 goto out;
2404 }
2405 property = obj_to_property(obj);
2406
2407 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2408 goto out;
2409
2410 if (property->flags & DRM_MODE_PROP_RANGE) {
2411 if (out_resp->value < property->values[0])
2412 goto out;
2413
2414 if (out_resp->value > property->values[1])
2415 goto out;
2416 } else {
2417 int found = 0;
2418 for (i = 0; i < property->num_values; i++) {
2419 if (property->values[i] == out_resp->value) {
2420 found = 1;
2421 break;
2422 }
2423 }
2424 if (!found) {
2425 goto out;
2426 }
2427 }
2428
2429 /* Do DPMS ourselves */
2430 if (property == connector->dev->mode_config.dpms_property) {
2431 if (connector->funcs->dpms)
2432 (*connector->funcs->dpms)(connector, (int) out_resp->value);
2433 ret = 0;
2434 } else if (connector->funcs->set_property)
2435 ret = connector->funcs->set_property(connector, property, out_resp->value);
2436
2437 /* store the property value if successful */
2438 if (!ret)
2439 drm_connector_property_set_value(connector, property, out_resp->value);
2440 out:
2441 mutex_unlock(&dev->mode_config.mutex);
2442 return ret;
2443 }
2444
2445 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2446 struct drm_encoder *encoder)
2447 {
2448 int i;
2449
2450 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2451 if (connector->encoder_ids[i] == 0) {
2452 connector->encoder_ids[i] = encoder->base.id;
2453 return 0;
2454 }
2455 }
2456 return -ENOMEM;
2457 }
2458 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2459
2460 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2461 struct drm_encoder *encoder)
2462 {
2463 int i;
2464 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2465 if (connector->encoder_ids[i] == encoder->base.id) {
2466 connector->encoder_ids[i] = 0;
2467 if (connector->encoder == encoder)
2468 connector->encoder = NULL;
2469 break;
2470 }
2471 }
2472 }
2473 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2474
2475 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2476 int gamma_size)
2477 {
2478 crtc->gamma_size = gamma_size;
2479
2480 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2481 if (!crtc->gamma_store) {
2482 crtc->gamma_size = 0;
2483 return false;
2484 }
2485
2486 return true;
2487 }
2488 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2489
2490 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2491 void *data, struct drm_file *file_priv)
2492 {
2493 struct drm_mode_crtc_lut *crtc_lut = data;
2494 struct drm_mode_object *obj;
2495 struct drm_crtc *crtc;
2496 void *r_base, *g_base, *b_base;
2497 int size;
2498 int ret = 0;
2499
2500 mutex_lock(&dev->mode_config.mutex);
2501 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2502 if (!obj) {
2503 ret = -EINVAL;
2504 goto out;
2505 }
2506 crtc = obj_to_crtc(obj);
2507
2508 /* memcpy into gamma store */
2509 if (crtc_lut->gamma_size != crtc->gamma_size) {
2510 ret = -EINVAL;
2511 goto out;
2512 }
2513
2514 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2515 r_base = crtc->gamma_store;
2516 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2517 ret = -EFAULT;
2518 goto out;
2519 }
2520
2521 g_base = r_base + size;
2522 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2523 ret = -EFAULT;
2524 goto out;
2525 }
2526
2527 b_base = g_base + size;
2528 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2529 ret = -EFAULT;
2530 goto out;
2531 }
2532
2533 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
2534
2535 out:
2536 mutex_unlock(&dev->mode_config.mutex);
2537 return ret;
2538
2539 }
2540
2541 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2542 void *data, struct drm_file *file_priv)
2543 {
2544 struct drm_mode_crtc_lut *crtc_lut = data;
2545 struct drm_mode_object *obj;
2546 struct drm_crtc *crtc;
2547 void *r_base, *g_base, *b_base;
2548 int size;
2549 int ret = 0;
2550
2551 mutex_lock(&dev->mode_config.mutex);
2552 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2553 if (!obj) {
2554 ret = -EINVAL;
2555 goto out;
2556 }
2557 crtc = obj_to_crtc(obj);
2558
2559 /* memcpy into gamma store */
2560 if (crtc_lut->gamma_size != crtc->gamma_size) {
2561 ret = -EINVAL;
2562 goto out;
2563 }
2564
2565 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2566 r_base = crtc->gamma_store;
2567 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2568 ret = -EFAULT;
2569 goto out;
2570 }
2571
2572 g_base = r_base + size;
2573 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2574 ret = -EFAULT;
2575 goto out;
2576 }
2577
2578 b_base = g_base + size;
2579 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2580 ret = -EFAULT;
2581 goto out;
2582 }
2583 out:
2584 mutex_unlock(&dev->mode_config.mutex);
2585 return ret;
2586 }
2587
2588 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2589 void *data, struct drm_file *file_priv)
2590 {
2591 struct drm_mode_crtc_page_flip *page_flip = data;
2592 struct drm_mode_object *obj;
2593 struct drm_crtc *crtc;
2594 struct drm_framebuffer *fb;
2595 struct drm_pending_vblank_event *e = NULL;
2596 unsigned long flags;
2597 int ret = -EINVAL;
2598
2599 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2600 page_flip->reserved != 0)
2601 return -EINVAL;
2602
2603 mutex_lock(&dev->mode_config.mutex);
2604 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2605 if (!obj)
2606 goto out;
2607 crtc = obj_to_crtc(obj);
2608
2609 if (crtc->funcs->page_flip == NULL)
2610 goto out;
2611
2612 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2613 if (!obj)
2614 goto out;
2615 fb = obj_to_fb(obj);
2616
2617 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2618 ret = -ENOMEM;
2619 spin_lock_irqsave(&dev->event_lock, flags);
2620 if (file_priv->event_space < sizeof e->event) {
2621 spin_unlock_irqrestore(&dev->event_lock, flags);
2622 goto out;
2623 }
2624 file_priv->event_space -= sizeof e->event;
2625 spin_unlock_irqrestore(&dev->event_lock, flags);
2626
2627 e = kzalloc(sizeof *e, GFP_KERNEL);
2628 if (e == NULL) {
2629 spin_lock_irqsave(&dev->event_lock, flags);
2630 file_priv->event_space += sizeof e->event;
2631 spin_unlock_irqrestore(&dev->event_lock, flags);
2632 goto out;
2633 }
2634
2635 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2636 e->event.base.length = sizeof e->event;
2637 e->event.user_data = page_flip->user_data;
2638 e->base.event = &e->event.base;
2639 e->base.file_priv = file_priv;
2640 e->base.destroy =
2641 (void (*) (struct drm_pending_event *)) kfree;
2642 }
2643
2644 ret = crtc->funcs->page_flip(crtc, fb, e);
2645 if (ret) {
2646 spin_lock_irqsave(&dev->event_lock, flags);
2647 file_priv->event_space += sizeof e->event;
2648 spin_unlock_irqrestore(&dev->event_lock, flags);
2649 kfree(e);
2650 }
2651
2652 out:
2653 mutex_unlock(&dev->mode_config.mutex);
2654 return ret;
2655 }
Linux with added FPC-III support