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FRV: Use generic show_interrupts()
[cris-mirror.git] / drivers / gpu / drm / drm_crtc.c
blob799e1490cf240964962650140bc1aca3631f3691
1 /*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include "drm.h"
35 #include "drmP.h"
36 #include "drm_crtc.h"
37 #include "drm_edid.h"
38
39 struct drm_prop_enum_list {
40 int type;
41 char *name;
42 };
43
44 /* Avoid boilerplate. I'm tired of typing. */
45 #define DRM_ENUM_NAME_FN(fnname, list) \
46 char *fnname(int val) \
47 { \
48 int i; \
49 for (i = 0; i < ARRAY_SIZE(list); i++) { \
50 if (list[i].type == val) \
51 return list[i].name; \
52 } \
53 return "(unknown)"; \
54 }
55
56 /*
57 * Global properties
58 */
59 static struct drm_prop_enum_list drm_dpms_enum_list[] =
60 { { DRM_MODE_DPMS_ON, "On" },
61 { DRM_MODE_DPMS_STANDBY, "Standby" },
62 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
63 { DRM_MODE_DPMS_OFF, "Off" }
64 };
65
66 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
67
68 /*
69 * Optional properties
70 */
71 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
72 {
73 { DRM_MODE_SCALE_NONE, "None" },
74 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
75 { DRM_MODE_SCALE_CENTER, "Center" },
76 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
77 };
78
79 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
80 {
81 { DRM_MODE_DITHERING_OFF, "Off" },
82 { DRM_MODE_DITHERING_ON, "On" },
83 { DRM_MODE_DITHERING_AUTO, "Automatic" },
84 };
85
86 /*
87 * Non-global properties, but "required" for certain connectors.
88 */
89 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
90 {
91 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
92 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
93 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
94 };
95
96 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
97
98 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
99 {
100 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
101 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
102 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
103 };
104
105 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
106 drm_dvi_i_subconnector_enum_list)
107
108 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
109 {
110 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
111 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
112 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
113 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
114 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
115 };
116
117 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
118
119 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
120 {
121 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
126 };
127
128 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
129 drm_tv_subconnector_enum_list)
130
131 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
132 { DRM_MODE_DIRTY_OFF, "Off" },
133 { DRM_MODE_DIRTY_ON, "On" },
134 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
135 };
136
137 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
138 drm_dirty_info_enum_list)
139
140 struct drm_conn_prop_enum_list {
141 int type;
142 char *name;
143 int count;
144 };
145
146 /*
147 * Connector and encoder types.
148 */
149 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
150 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
151 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
152 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
153 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
154 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
155 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
156 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
157 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
158 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
159 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
160 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
161 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
162 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
163 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
164 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
165 };
166
167 static struct drm_prop_enum_list drm_encoder_enum_list[] =
168 { { DRM_MODE_ENCODER_NONE, "None" },
169 { DRM_MODE_ENCODER_DAC, "DAC" },
170 { DRM_MODE_ENCODER_TMDS, "TMDS" },
171 { DRM_MODE_ENCODER_LVDS, "LVDS" },
172 { DRM_MODE_ENCODER_TVDAC, "TV" },
173 };
174
175 char *drm_get_encoder_name(struct drm_encoder *encoder)
176 {
177 static char buf[32];
178
179 snprintf(buf, 32, "%s-%d",
180 drm_encoder_enum_list[encoder->encoder_type].name,
181 encoder->base.id);
182 return buf;
183 }
184 EXPORT_SYMBOL(drm_get_encoder_name);
185
186 char *drm_get_connector_name(struct drm_connector *connector)
187 {
188 static char buf[32];
189
190 snprintf(buf, 32, "%s-%d",
191 drm_connector_enum_list[connector->connector_type].name,
192 connector->connector_type_id);
193 return buf;
194 }
195 EXPORT_SYMBOL(drm_get_connector_name);
196
197 char *drm_get_connector_status_name(enum drm_connector_status status)
198 {
199 if (status == connector_status_connected)
200 return "connected";
201 else if (status == connector_status_disconnected)
202 return "disconnected";
203 else
204 return "unknown";
205 }
206
207 /**
208 * drm_mode_object_get - allocate a new identifier
209 * @dev: DRM device
210 * @ptr: object pointer, used to generate unique ID
211 * @type: object type
212 *
213 * LOCKING:
214 *
215 * Create a unique identifier based on @ptr in @dev's identifier space. Used
216 * for tracking modes, CRTCs and connectors.
217 *
218 * RETURNS:
219 * New unique (relative to other objects in @dev) integer identifier for the
220 * object.
221 */
222 static int drm_mode_object_get(struct drm_device *dev,
223 struct drm_mode_object *obj, uint32_t obj_type)
224 {
225 int new_id = 0;
226 int ret;
227
228 again:
229 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
230 DRM_ERROR("Ran out memory getting a mode number\n");
231 return -EINVAL;
232 }
233
234 mutex_lock(&dev->mode_config.idr_mutex);
235 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
236 mutex_unlock(&dev->mode_config.idr_mutex);
237 if (ret == -EAGAIN)
238 goto again;
239
240 obj->id = new_id;
241 obj->type = obj_type;
242 return 0;
243 }
244
245 /**
246 * drm_mode_object_put - free an identifer
247 * @dev: DRM device
248 * @id: ID to free
249 *
250 * LOCKING:
251 * Caller must hold DRM mode_config lock.
252 *
253 * Free @id from @dev's unique identifier pool.
254 */
255 static void drm_mode_object_put(struct drm_device *dev,
256 struct drm_mode_object *object)
257 {
258 mutex_lock(&dev->mode_config.idr_mutex);
259 idr_remove(&dev->mode_config.crtc_idr, object->id);
260 mutex_unlock(&dev->mode_config.idr_mutex);
261 }
262
263 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
264 uint32_t id, uint32_t type)
265 {
266 struct drm_mode_object *obj = NULL;
267
268 mutex_lock(&dev->mode_config.idr_mutex);
269 obj = idr_find(&dev->mode_config.crtc_idr, id);
270 if (!obj || (obj->type != type) || (obj->id != id))
271 obj = NULL;
272 mutex_unlock(&dev->mode_config.idr_mutex);
273
274 return obj;
275 }
276 EXPORT_SYMBOL(drm_mode_object_find);
277
278 /**
279 * drm_framebuffer_init - initialize a framebuffer
280 * @dev: DRM device
281 *
282 * LOCKING:
283 * Caller must hold mode config lock.
284 *
285 * Allocates an ID for the framebuffer's parent mode object, sets its mode
286 * functions & device file and adds it to the master fd list.
287 *
288 * RETURNS:
289 * Zero on success, error code on failure.
290 */
291 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
292 const struct drm_framebuffer_funcs *funcs)
293 {
294 int ret;
295
296 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
297 if (ret) {
298 return ret;
299 }
300
301 fb->dev = dev;
302 fb->funcs = funcs;
303 dev->mode_config.num_fb++;
304 list_add(&fb->head, &dev->mode_config.fb_list);
305
306 return 0;
307 }
308 EXPORT_SYMBOL(drm_framebuffer_init);
309
310 /**
311 * drm_framebuffer_cleanup - remove a framebuffer object
312 * @fb: framebuffer to remove
313 *
314 * LOCKING:
315 * Caller must hold mode config lock.
316 *
317 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
318 * it, setting it to NULL.
319 */
320 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
321 {
322 struct drm_device *dev = fb->dev;
323 struct drm_crtc *crtc;
324 struct drm_mode_set set;
325 int ret;
326
327 /* remove from any CRTC */
328 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
329 if (crtc->fb == fb) {
330 /* should turn off the crtc */
331 memset(&set, 0, sizeof(struct drm_mode_set));
332 set.crtc = crtc;
333 set.fb = NULL;
334 ret = crtc->funcs->set_config(&set);
335 if (ret)
336 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
337 }
338 }
339
340 drm_mode_object_put(dev, &fb->base);
341 list_del(&fb->head);
342 dev->mode_config.num_fb--;
343 }
344 EXPORT_SYMBOL(drm_framebuffer_cleanup);
345
346 /**
347 * drm_crtc_init - Initialise a new CRTC object
348 * @dev: DRM device
349 * @crtc: CRTC object to init
350 * @funcs: callbacks for the new CRTC
351 *
352 * LOCKING:
353 * Caller must hold mode config lock.
354 *
355 * Inits a new object created as base part of an driver crtc object.
356 */
357 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
358 const struct drm_crtc_funcs *funcs)
359 {
360 crtc->dev = dev;
361 crtc->funcs = funcs;
362
363 mutex_lock(&dev->mode_config.mutex);
364 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
365
366 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
367 dev->mode_config.num_crtc++;
368 mutex_unlock(&dev->mode_config.mutex);
369 }
370 EXPORT_SYMBOL(drm_crtc_init);
371
372 /**
373 * drm_crtc_cleanup - Cleans up the core crtc usage.
374 * @crtc: CRTC to cleanup
375 *
376 * LOCKING:
377 * Caller must hold mode config lock.
378 *
379 * Cleanup @crtc. Removes from drm modesetting space
380 * does NOT free object, caller does that.
381 */
382 void drm_crtc_cleanup(struct drm_crtc *crtc)
383 {
384 struct drm_device *dev = crtc->dev;
385
386 if (crtc->gamma_store) {
387 kfree(crtc->gamma_store);
388 crtc->gamma_store = NULL;
389 }
390
391 drm_mode_object_put(dev, &crtc->base);
392 list_del(&crtc->head);
393 dev->mode_config.num_crtc--;
394 }
395 EXPORT_SYMBOL(drm_crtc_cleanup);
396
397 /**
398 * drm_mode_probed_add - add a mode to a connector's probed mode list
399 * @connector: connector the new mode
400 * @mode: mode data
401 *
402 * LOCKING:
403 * Caller must hold mode config lock.
404 *
405 * Add @mode to @connector's mode list for later use.
406 */
407 void drm_mode_probed_add(struct drm_connector *connector,
408 struct drm_display_mode *mode)
409 {
410 list_add(&mode->head, &connector->probed_modes);
411 }
412 EXPORT_SYMBOL(drm_mode_probed_add);
413
414 /**
415 * drm_mode_remove - remove and free a mode
416 * @connector: connector list to modify
417 * @mode: mode to remove
418 *
419 * LOCKING:
420 * Caller must hold mode config lock.
421 *
422 * Remove @mode from @connector's mode list, then free it.
423 */
424 void drm_mode_remove(struct drm_connector *connector,
425 struct drm_display_mode *mode)
426 {
427 list_del(&mode->head);
428 kfree(mode);
429 }
430 EXPORT_SYMBOL(drm_mode_remove);
431
432 /**
433 * drm_connector_init - Init a preallocated connector
434 * @dev: DRM device
435 * @connector: the connector to init
436 * @funcs: callbacks for this connector
437 * @name: user visible name of the connector
438 *
439 * LOCKING:
440 * Caller must hold @dev's mode_config lock.
441 *
442 * Initialises a preallocated connector. Connectors should be
443 * subclassed as part of driver connector objects.
444 */
445 void drm_connector_init(struct drm_device *dev,
446 struct drm_connector *connector,
447 const struct drm_connector_funcs *funcs,
448 int connector_type)
449 {
450 mutex_lock(&dev->mode_config.mutex);
451
452 connector->dev = dev;
453 connector->funcs = funcs;
454 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
455 connector->connector_type = connector_type;
456 connector->connector_type_id =
457 ++drm_connector_enum_list[connector_type].count; /* TODO */
458 INIT_LIST_HEAD(&connector->user_modes);
459 INIT_LIST_HEAD(&connector->probed_modes);
460 INIT_LIST_HEAD(&connector->modes);
461 connector->edid_blob_ptr = NULL;
462
463 list_add_tail(&connector->head, &dev->mode_config.connector_list);
464 dev->mode_config.num_connector++;
465
466 drm_connector_attach_property(connector,
467 dev->mode_config.edid_property, 0);
468
469 drm_connector_attach_property(connector,
470 dev->mode_config.dpms_property, 0);
471
472 mutex_unlock(&dev->mode_config.mutex);
473 }
474 EXPORT_SYMBOL(drm_connector_init);
475
476 /**
477 * drm_connector_cleanup - cleans up an initialised connector
478 * @connector: connector to cleanup
479 *
480 * LOCKING:
481 * Caller must hold @dev's mode_config lock.
482 *
483 * Cleans up the connector but doesn't free the object.
484 */
485 void drm_connector_cleanup(struct drm_connector *connector)
486 {
487 struct drm_device *dev = connector->dev;
488 struct drm_display_mode *mode, *t;
489
490 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
491 drm_mode_remove(connector, mode);
492
493 list_for_each_entry_safe(mode, t, &connector->modes, head)
494 drm_mode_remove(connector, mode);
495
496 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
497 drm_mode_remove(connector, mode);
498
499 mutex_lock(&dev->mode_config.mutex);
500 drm_mode_object_put(dev, &connector->base);
501 list_del(&connector->head);
502 mutex_unlock(&dev->mode_config.mutex);
503 }
504 EXPORT_SYMBOL(drm_connector_cleanup);
505
506 void drm_encoder_init(struct drm_device *dev,
507 struct drm_encoder *encoder,
508 const struct drm_encoder_funcs *funcs,
509 int encoder_type)
510 {
511 mutex_lock(&dev->mode_config.mutex);
512
513 encoder->dev = dev;
514
515 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
516 encoder->encoder_type = encoder_type;
517 encoder->funcs = funcs;
518
519 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
520 dev->mode_config.num_encoder++;
521
522 mutex_unlock(&dev->mode_config.mutex);
523 }
524 EXPORT_SYMBOL(drm_encoder_init);
525
526 void drm_encoder_cleanup(struct drm_encoder *encoder)
527 {
528 struct drm_device *dev = encoder->dev;
529 mutex_lock(&dev->mode_config.mutex);
530 drm_mode_object_put(dev, &encoder->base);
531 list_del(&encoder->head);
532 mutex_unlock(&dev->mode_config.mutex);
533 }
534 EXPORT_SYMBOL(drm_encoder_cleanup);
535
536 /**
537 * drm_mode_create - create a new display mode
538 * @dev: DRM device
539 *
540 * LOCKING:
541 * Caller must hold DRM mode_config lock.
542 *
543 * Create a new drm_display_mode, give it an ID, and return it.
544 *
545 * RETURNS:
546 * Pointer to new mode on success, NULL on error.
547 */
548 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
549 {
550 struct drm_display_mode *nmode;
551
552 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
553 if (!nmode)
554 return NULL;
555
556 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
557 return nmode;
558 }
559 EXPORT_SYMBOL(drm_mode_create);
560
561 /**
562 * drm_mode_destroy - remove a mode
563 * @dev: DRM device
564 * @mode: mode to remove
565 *
566 * LOCKING:
567 * Caller must hold mode config lock.
568 *
569 * Free @mode's unique identifier, then free it.
570 */
571 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
572 {
573 drm_mode_object_put(dev, &mode->base);
574
575 kfree(mode);
576 }
577 EXPORT_SYMBOL(drm_mode_destroy);
578
579 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
580 {
581 struct drm_property *edid;
582 struct drm_property *dpms;
583 int i;
584
585 /*
586 * Standard properties (apply to all connectors)
587 */
588 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
589 DRM_MODE_PROP_IMMUTABLE,
590 "EDID", 0);
591 dev->mode_config.edid_property = edid;
592
593 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
594 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
595 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
596 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
597 drm_dpms_enum_list[i].name);
598 dev->mode_config.dpms_property = dpms;
599
600 return 0;
601 }
602
603 /**
604 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
605 * @dev: DRM device
606 *
607 * Called by a driver the first time a DVI-I connector is made.
608 */
609 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
610 {
611 struct drm_property *dvi_i_selector;
612 struct drm_property *dvi_i_subconnector;
613 int i;
614
615 if (dev->mode_config.dvi_i_select_subconnector_property)
616 return 0;
617
618 dvi_i_selector =
619 drm_property_create(dev, DRM_MODE_PROP_ENUM,
620 "select subconnector",
621 ARRAY_SIZE(drm_dvi_i_select_enum_list));
622 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
623 drm_property_add_enum(dvi_i_selector, i,
624 drm_dvi_i_select_enum_list[i].type,
625 drm_dvi_i_select_enum_list[i].name);
626 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
627
628 dvi_i_subconnector =
629 drm_property_create(dev, DRM_MODE_PROP_ENUM |
630 DRM_MODE_PROP_IMMUTABLE,
631 "subconnector",
632 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
633 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
634 drm_property_add_enum(dvi_i_subconnector, i,
635 drm_dvi_i_subconnector_enum_list[i].type,
636 drm_dvi_i_subconnector_enum_list[i].name);
637 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
638
639 return 0;
640 }
641 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
642
643 /**
644 * drm_create_tv_properties - create TV specific connector properties
645 * @dev: DRM device
646 * @num_modes: number of different TV formats (modes) supported
647 * @modes: array of pointers to strings containing name of each format
648 *
649 * Called by a driver's TV initialization routine, this function creates
650 * the TV specific connector properties for a given device. Caller is
651 * responsible for allocating a list of format names and passing them to
652 * this routine.
653 */
654 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
655 char *modes[])
656 {
657 struct drm_property *tv_selector;
658 struct drm_property *tv_subconnector;
659 int i;
660
661 if (dev->mode_config.tv_select_subconnector_property)
662 return 0;
663
664 /*
665 * Basic connector properties
666 */
667 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
668 "select subconnector",
669 ARRAY_SIZE(drm_tv_select_enum_list));
670 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
671 drm_property_add_enum(tv_selector, i,
672 drm_tv_select_enum_list[i].type,
673 drm_tv_select_enum_list[i].name);
674 dev->mode_config.tv_select_subconnector_property = tv_selector;
675
676 tv_subconnector =
677 drm_property_create(dev, DRM_MODE_PROP_ENUM |
678 DRM_MODE_PROP_IMMUTABLE, "subconnector",
679 ARRAY_SIZE(drm_tv_subconnector_enum_list));
680 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
681 drm_property_add_enum(tv_subconnector, i,
682 drm_tv_subconnector_enum_list[i].type,
683 drm_tv_subconnector_enum_list[i].name);
684 dev->mode_config.tv_subconnector_property = tv_subconnector;
685
686 /*
687 * Other, TV specific properties: margins & TV modes.
688 */
689 dev->mode_config.tv_left_margin_property =
690 drm_property_create(dev, DRM_MODE_PROP_RANGE,
691 "left margin", 2);
692 dev->mode_config.tv_left_margin_property->values[0] = 0;
693 dev->mode_config.tv_left_margin_property->values[1] = 100;
694
695 dev->mode_config.tv_right_margin_property =
696 drm_property_create(dev, DRM_MODE_PROP_RANGE,
697 "right margin", 2);
698 dev->mode_config.tv_right_margin_property->values[0] = 0;
699 dev->mode_config.tv_right_margin_property->values[1] = 100;
700
701 dev->mode_config.tv_top_margin_property =
702 drm_property_create(dev, DRM_MODE_PROP_RANGE,
703 "top margin", 2);
704 dev->mode_config.tv_top_margin_property->values[0] = 0;
705 dev->mode_config.tv_top_margin_property->values[1] = 100;
706
707 dev->mode_config.tv_bottom_margin_property =
708 drm_property_create(dev, DRM_MODE_PROP_RANGE,
709 "bottom margin", 2);
710 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
711 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
712
713 dev->mode_config.tv_mode_property =
714 drm_property_create(dev, DRM_MODE_PROP_ENUM,
715 "mode", num_modes);
716 for (i = 0; i < num_modes; i++)
717 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
718 i, modes[i]);
719
720 dev->mode_config.tv_brightness_property =
721 drm_property_create(dev, DRM_MODE_PROP_RANGE,
722 "brightness", 2);
723 dev->mode_config.tv_brightness_property->values[0] = 0;
724 dev->mode_config.tv_brightness_property->values[1] = 100;
725
726 dev->mode_config.tv_contrast_property =
727 drm_property_create(dev, DRM_MODE_PROP_RANGE,
728 "contrast", 2);
729 dev->mode_config.tv_contrast_property->values[0] = 0;
730 dev->mode_config.tv_contrast_property->values[1] = 100;
731
732 dev->mode_config.tv_flicker_reduction_property =
733 drm_property_create(dev, DRM_MODE_PROP_RANGE,
734 "flicker reduction", 2);
735 dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
736 dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
737
738 dev->mode_config.tv_overscan_property =
739 drm_property_create(dev, DRM_MODE_PROP_RANGE,
740 "overscan", 2);
741 dev->mode_config.tv_overscan_property->values[0] = 0;
742 dev->mode_config.tv_overscan_property->values[1] = 100;
743
744 dev->mode_config.tv_saturation_property =
745 drm_property_create(dev, DRM_MODE_PROP_RANGE,
746 "saturation", 2);
747 dev->mode_config.tv_saturation_property->values[0] = 0;
748 dev->mode_config.tv_saturation_property->values[1] = 100;
749
750 dev->mode_config.tv_hue_property =
751 drm_property_create(dev, DRM_MODE_PROP_RANGE,
752 "hue", 2);
753 dev->mode_config.tv_hue_property->values[0] = 0;
754 dev->mode_config.tv_hue_property->values[1] = 100;
755
756 return 0;
757 }
758 EXPORT_SYMBOL(drm_mode_create_tv_properties);
759
760 /**
761 * drm_mode_create_scaling_mode_property - create scaling mode property
762 * @dev: DRM device
763 *
764 * Called by a driver the first time it's needed, must be attached to desired
765 * connectors.
766 */
767 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
768 {
769 struct drm_property *scaling_mode;
770 int i;
771
772 if (dev->mode_config.scaling_mode_property)
773 return 0;
774
775 scaling_mode =
776 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
777 ARRAY_SIZE(drm_scaling_mode_enum_list));
778 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
779 drm_property_add_enum(scaling_mode, i,
780 drm_scaling_mode_enum_list[i].type,
781 drm_scaling_mode_enum_list[i].name);
782
783 dev->mode_config.scaling_mode_property = scaling_mode;
784
785 return 0;
786 }
787 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
788
789 /**
790 * drm_mode_create_dithering_property - create dithering property
791 * @dev: DRM device
792 *
793 * Called by a driver the first time it's needed, must be attached to desired
794 * connectors.
795 */
796 int drm_mode_create_dithering_property(struct drm_device *dev)
797 {
798 struct drm_property *dithering_mode;
799 int i;
800
801 if (dev->mode_config.dithering_mode_property)
802 return 0;
803
804 dithering_mode =
805 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
806 ARRAY_SIZE(drm_dithering_mode_enum_list));
807 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
808 drm_property_add_enum(dithering_mode, i,
809 drm_dithering_mode_enum_list[i].type,
810 drm_dithering_mode_enum_list[i].name);
811 dev->mode_config.dithering_mode_property = dithering_mode;
812
813 return 0;
814 }
815 EXPORT_SYMBOL(drm_mode_create_dithering_property);
816
817 /**
818 * drm_mode_create_dirty_property - create dirty property
819 * @dev: DRM device
820 *
821 * Called by a driver the first time it's needed, must be attached to desired
822 * connectors.
823 */
824 int drm_mode_create_dirty_info_property(struct drm_device *dev)
825 {
826 struct drm_property *dirty_info;
827 int i;
828
829 if (dev->mode_config.dirty_info_property)
830 return 0;
831
832 dirty_info =
833 drm_property_create(dev, DRM_MODE_PROP_ENUM |
834 DRM_MODE_PROP_IMMUTABLE,
835 "dirty",
836 ARRAY_SIZE(drm_dirty_info_enum_list));
837 for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
838 drm_property_add_enum(dirty_info, i,
839 drm_dirty_info_enum_list[i].type,
840 drm_dirty_info_enum_list[i].name);
841 dev->mode_config.dirty_info_property = dirty_info;
842
843 return 0;
844 }
845 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
846
847 /**
848 * drm_mode_config_init - initialize DRM mode_configuration structure
849 * @dev: DRM device
850 *
851 * LOCKING:
852 * None, should happen single threaded at init time.
853 *
854 * Initialize @dev's mode_config structure, used for tracking the graphics
855 * configuration of @dev.
856 */
857 void drm_mode_config_init(struct drm_device *dev)
858 {
859 mutex_init(&dev->mode_config.mutex);
860 mutex_init(&dev->mode_config.idr_mutex);
861 INIT_LIST_HEAD(&dev->mode_config.fb_list);
862 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
863 INIT_LIST_HEAD(&dev->mode_config.connector_list);
864 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
865 INIT_LIST_HEAD(&dev->mode_config.property_list);
866 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
867 idr_init(&dev->mode_config.crtc_idr);
868
869 mutex_lock(&dev->mode_config.mutex);
870 drm_mode_create_standard_connector_properties(dev);
871 mutex_unlock(&dev->mode_config.mutex);
872
873 /* Just to be sure */
874 dev->mode_config.num_fb = 0;
875 dev->mode_config.num_connector = 0;
876 dev->mode_config.num_crtc = 0;
877 dev->mode_config.num_encoder = 0;
878 }
879 EXPORT_SYMBOL(drm_mode_config_init);
880
881 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
882 {
883 uint32_t total_objects = 0;
884
885 total_objects += dev->mode_config.num_crtc;
886 total_objects += dev->mode_config.num_connector;
887 total_objects += dev->mode_config.num_encoder;
888
889 if (total_objects == 0)
890 return -EINVAL;
891
892 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
893 if (!group->id_list)
894 return -ENOMEM;
895
896 group->num_crtcs = 0;
897 group->num_connectors = 0;
898 group->num_encoders = 0;
899 return 0;
900 }
901
902 int drm_mode_group_init_legacy_group(struct drm_device *dev,
903 struct drm_mode_group *group)
904 {
905 struct drm_crtc *crtc;
906 struct drm_encoder *encoder;
907 struct drm_connector *connector;
908 int ret;
909
910 if ((ret = drm_mode_group_init(dev, group)))
911 return ret;
912
913 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
914 group->id_list[group->num_crtcs++] = crtc->base.id;
915
916 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
917 group->id_list[group->num_crtcs + group->num_encoders++] =
918 encoder->base.id;
919
920 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
921 group->id_list[group->num_crtcs + group->num_encoders +
922 group->num_connectors++] = connector->base.id;
923
924 return 0;
925 }
926
927 /**
928 * drm_mode_config_cleanup - free up DRM mode_config info
929 * @dev: DRM device
930 *
931 * LOCKING:
932 * Caller must hold mode config lock.
933 *
934 * Free up all the connectors and CRTCs associated with this DRM device, then
935 * free up the framebuffers and associated buffer objects.
936 *
937 * FIXME: cleanup any dangling user buffer objects too
938 */
939 void drm_mode_config_cleanup(struct drm_device *dev)
940 {
941 struct drm_connector *connector, *ot;
942 struct drm_crtc *crtc, *ct;
943 struct drm_encoder *encoder, *enct;
944 struct drm_framebuffer *fb, *fbt;
945 struct drm_property *property, *pt;
946
947 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
948 head) {
949 encoder->funcs->destroy(encoder);
950 }
951
952 list_for_each_entry_safe(connector, ot,
953 &dev->mode_config.connector_list, head) {
954 connector->funcs->destroy(connector);
955 }
956
957 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
958 head) {
959 drm_property_destroy(dev, property);
960 }
961
962 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
963 fb->funcs->destroy(fb);
964 }
965
966 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
967 crtc->funcs->destroy(crtc);
968 }
969
970 }
971 EXPORT_SYMBOL(drm_mode_config_cleanup);
972
973 /**
974 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
975 * @out: drm_mode_modeinfo struct to return to the user
976 * @in: drm_display_mode to use
977 *
978 * LOCKING:
979 * None.
980 *
981 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
982 * the user.
983 */
984 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
985 struct drm_display_mode *in)
986 {
987 out->clock = in->clock;
988 out->hdisplay = in->hdisplay;
989 out->hsync_start = in->hsync_start;
990 out->hsync_end = in->hsync_end;
991 out->htotal = in->htotal;
992 out->hskew = in->hskew;
993 out->vdisplay = in->vdisplay;
994 out->vsync_start = in->vsync_start;
995 out->vsync_end = in->vsync_end;
996 out->vtotal = in->vtotal;
997 out->vscan = in->vscan;
998 out->vrefresh = in->vrefresh;
999 out->flags = in->flags;
1000 out->type = in->type;
1001 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1002 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1003 }
1004
1005 /**
1006 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1007 * @out: drm_display_mode to return to the user
1008 * @in: drm_mode_modeinfo to use
1009 *
1010 * LOCKING:
1011 * None.
1012 *
1013 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1014 * the caller.
1015 */
1016 void drm_crtc_convert_umode(struct drm_display_mode *out,
1017 struct drm_mode_modeinfo *in)
1018 {
1019 out->clock = in->clock;
1020 out->hdisplay = in->hdisplay;
1021 out->hsync_start = in->hsync_start;
1022 out->hsync_end = in->hsync_end;
1023 out->htotal = in->htotal;
1024 out->hskew = in->hskew;
1025 out->vdisplay = in->vdisplay;
1026 out->vsync_start = in->vsync_start;
1027 out->vsync_end = in->vsync_end;
1028 out->vtotal = in->vtotal;
1029 out->vscan = in->vscan;
1030 out->vrefresh = in->vrefresh;
1031 out->flags = in->flags;
1032 out->type = in->type;
1033 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1034 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1035 }
1036
1037 /**
1038 * drm_mode_getresources - get graphics configuration
1039 * @inode: inode from the ioctl
1040 * @filp: file * from the ioctl
1041 * @cmd: cmd from ioctl
1042 * @arg: arg from ioctl
1043 *
1044 * LOCKING:
1045 * Takes mode config lock.
1046 *
1047 * Construct a set of configuration description structures and return
1048 * them to the user, including CRTC, connector and framebuffer configuration.
1049 *
1050 * Called by the user via ioctl.
1051 *
1052 * RETURNS:
1053 * Zero on success, errno on failure.
1054 */
1055 int drm_mode_getresources(struct drm_device *dev, void *data,
1056 struct drm_file *file_priv)
1057 {
1058 struct drm_mode_card_res *card_res = data;
1059 struct list_head *lh;
1060 struct drm_framebuffer *fb;
1061 struct drm_connector *connector;
1062 struct drm_crtc *crtc;
1063 struct drm_encoder *encoder;
1064 int ret = 0;
1065 int connector_count = 0;
1066 int crtc_count = 0;
1067 int fb_count = 0;
1068 int encoder_count = 0;
1069 int copied = 0, i;
1070 uint32_t __user *fb_id;
1071 uint32_t __user *crtc_id;
1072 uint32_t __user *connector_id;
1073 uint32_t __user *encoder_id;
1074 struct drm_mode_group *mode_group;
1075
1076 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1077 return -EINVAL;
1078
1079 mutex_lock(&dev->mode_config.mutex);
1080
1081 /*
1082 * For the non-control nodes we need to limit the list of resources
1083 * by IDs in the group list for this node
1084 */
1085 list_for_each(lh, &file_priv->fbs)
1086 fb_count++;
1087
1088 mode_group = &file_priv->master->minor->mode_group;
1089 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1090
1091 list_for_each(lh, &dev->mode_config.crtc_list)
1092 crtc_count++;
1093
1094 list_for_each(lh, &dev->mode_config.connector_list)
1095 connector_count++;
1096
1097 list_for_each(lh, &dev->mode_config.encoder_list)
1098 encoder_count++;
1099 } else {
1100
1101 crtc_count = mode_group->num_crtcs;
1102 connector_count = mode_group->num_connectors;
1103 encoder_count = mode_group->num_encoders;
1104 }
1105
1106 card_res->max_height = dev->mode_config.max_height;
1107 card_res->min_height = dev->mode_config.min_height;
1108 card_res->max_width = dev->mode_config.max_width;
1109 card_res->min_width = dev->mode_config.min_width;
1110
1111 /* handle this in 4 parts */
1112 /* FBs */
1113 if (card_res->count_fbs >= fb_count) {
1114 copied = 0;
1115 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1116 list_for_each_entry(fb, &file_priv->fbs, head) {
1117 if (put_user(fb->base.id, fb_id + copied)) {
1118 ret = -EFAULT;
1119 goto out;
1120 }
1121 copied++;
1122 }
1123 }
1124 card_res->count_fbs = fb_count;
1125
1126 /* CRTCs */
1127 if (card_res->count_crtcs >= crtc_count) {
1128 copied = 0;
1129 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1130 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1131 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1132 head) {
1133 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1134 if (put_user(crtc->base.id, crtc_id + copied)) {
1135 ret = -EFAULT;
1136 goto out;
1137 }
1138 copied++;
1139 }
1140 } else {
1141 for (i = 0; i < mode_group->num_crtcs; i++) {
1142 if (put_user(mode_group->id_list[i],
1143 crtc_id + copied)) {
1144 ret = -EFAULT;
1145 goto out;
1146 }
1147 copied++;
1148 }
1149 }
1150 }
1151 card_res->count_crtcs = crtc_count;
1152
1153 /* Encoders */
1154 if (card_res->count_encoders >= encoder_count) {
1155 copied = 0;
1156 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1157 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1158 list_for_each_entry(encoder,
1159 &dev->mode_config.encoder_list,
1160 head) {
1161 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1162 drm_get_encoder_name(encoder));
1163 if (put_user(encoder->base.id, encoder_id +
1164 copied)) {
1165 ret = -EFAULT;
1166 goto out;
1167 }
1168 copied++;
1169 }
1170 } else {
1171 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1172 if (put_user(mode_group->id_list[i],
1173 encoder_id + copied)) {
1174 ret = -EFAULT;
1175 goto out;
1176 }
1177 copied++;
1178 }
1179
1180 }
1181 }
1182 card_res->count_encoders = encoder_count;
1183
1184 /* Connectors */
1185 if (card_res->count_connectors >= connector_count) {
1186 copied = 0;
1187 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1188 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1189 list_for_each_entry(connector,
1190 &dev->mode_config.connector_list,
1191 head) {
1192 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1193 connector->base.id,
1194 drm_get_connector_name(connector));
1195 if (put_user(connector->base.id,
1196 connector_id + copied)) {
1197 ret = -EFAULT;
1198 goto out;
1199 }
1200 copied++;
1201 }
1202 } else {
1203 int start = mode_group->num_crtcs +
1204 mode_group->num_encoders;
1205 for (i = start; i < start + mode_group->num_connectors; i++) {
1206 if (put_user(mode_group->id_list[i],
1207 connector_id + copied)) {
1208 ret = -EFAULT;
1209 goto out;
1210 }
1211 copied++;
1212 }
1213 }
1214 }
1215 card_res->count_connectors = connector_count;
1216
1217 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1218 card_res->count_connectors, card_res->count_encoders);
1219
1220 out:
1221 mutex_unlock(&dev->mode_config.mutex);
1222 return ret;
1223 }
1224
1225 /**
1226 * drm_mode_getcrtc - get CRTC configuration
1227 * @inode: inode from the ioctl
1228 * @filp: file * from the ioctl
1229 * @cmd: cmd from ioctl
1230 * @arg: arg from ioctl
1231 *
1232 * LOCKING:
1233 * Caller? (FIXME)
1234 *
1235 * Construct a CRTC configuration structure to return to the user.
1236 *
1237 * Called by the user via ioctl.
1238 *
1239 * RETURNS:
1240 * Zero on success, errno on failure.
1241 */
1242 int drm_mode_getcrtc(struct drm_device *dev,
1243 void *data, struct drm_file *file_priv)
1244 {
1245 struct drm_mode_crtc *crtc_resp = data;
1246 struct drm_crtc *crtc;
1247 struct drm_mode_object *obj;
1248 int ret = 0;
1249
1250 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1251 return -EINVAL;
1252
1253 mutex_lock(&dev->mode_config.mutex);
1254
1255 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1256 DRM_MODE_OBJECT_CRTC);
1257 if (!obj) {
1258 ret = -EINVAL;
1259 goto out;
1260 }
1261 crtc = obj_to_crtc(obj);
1262
1263 crtc_resp->x = crtc->x;
1264 crtc_resp->y = crtc->y;
1265 crtc_resp->gamma_size = crtc->gamma_size;
1266 if (crtc->fb)
1267 crtc_resp->fb_id = crtc->fb->base.id;
1268 else
1269 crtc_resp->fb_id = 0;
1270
1271 if (crtc->enabled) {
1272
1273 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1274 crtc_resp->mode_valid = 1;
1275
1276 } else {
1277 crtc_resp->mode_valid = 0;
1278 }
1279
1280 out:
1281 mutex_unlock(&dev->mode_config.mutex);
1282 return ret;
1283 }
1284
1285 /**
1286 * drm_mode_getconnector - get connector configuration
1287 * @inode: inode from the ioctl
1288 * @filp: file * from the ioctl
1289 * @cmd: cmd from ioctl
1290 * @arg: arg from ioctl
1291 *
1292 * LOCKING:
1293 * Caller? (FIXME)
1294 *
1295 * Construct a connector configuration structure to return to the user.
1296 *
1297 * Called by the user via ioctl.
1298 *
1299 * RETURNS:
1300 * Zero on success, errno on failure.
1301 */
1302 int drm_mode_getconnector(struct drm_device *dev, void *data,
1303 struct drm_file *file_priv)
1304 {
1305 struct drm_mode_get_connector *out_resp = data;
1306 struct drm_mode_object *obj;
1307 struct drm_connector *connector;
1308 struct drm_display_mode *mode;
1309 int mode_count = 0;
1310 int props_count = 0;
1311 int encoders_count = 0;
1312 int ret = 0;
1313 int copied = 0;
1314 int i;
1315 struct drm_mode_modeinfo u_mode;
1316 struct drm_mode_modeinfo __user *mode_ptr;
1317 uint32_t __user *prop_ptr;
1318 uint64_t __user *prop_values;
1319 uint32_t __user *encoder_ptr;
1320
1321 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1322 return -EINVAL;
1323
1324 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1325
1326 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1327
1328 mutex_lock(&dev->mode_config.mutex);
1329
1330 obj = drm_mode_object_find(dev, out_resp->connector_id,
1331 DRM_MODE_OBJECT_CONNECTOR);
1332 if (!obj) {
1333 ret = -EINVAL;
1334 goto out;
1335 }
1336 connector = obj_to_connector(obj);
1337
1338 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1339 if (connector->property_ids[i] != 0) {
1340 props_count++;
1341 }
1342 }
1343
1344 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1345 if (connector->encoder_ids[i] != 0) {
1346 encoders_count++;
1347 }
1348 }
1349
1350 if (out_resp->count_modes == 0) {
1351 connector->funcs->fill_modes(connector,
1352 dev->mode_config.max_width,
1353 dev->mode_config.max_height);
1354 }
1355
1356 /* delayed so we get modes regardless of pre-fill_modes state */
1357 list_for_each_entry(mode, &connector->modes, head)
1358 mode_count++;
1359
1360 out_resp->connector_id = connector->base.id;
1361 out_resp->connector_type = connector->connector_type;
1362 out_resp->connector_type_id = connector->connector_type_id;
1363 out_resp->mm_width = connector->display_info.width_mm;
1364 out_resp->mm_height = connector->display_info.height_mm;
1365 out_resp->subpixel = connector->display_info.subpixel_order;
1366 out_resp->connection = connector->status;
1367 if (connector->encoder)
1368 out_resp->encoder_id = connector->encoder->base.id;
1369 else
1370 out_resp->encoder_id = 0;
1371
1372 /*
1373 * This ioctl is called twice, once to determine how much space is
1374 * needed, and the 2nd time to fill it.
1375 */
1376 if ((out_resp->count_modes >= mode_count) && mode_count) {
1377 copied = 0;
1378 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1379 list_for_each_entry(mode, &connector->modes, head) {
1380 drm_crtc_convert_to_umode(&u_mode, mode);
1381 if (copy_to_user(mode_ptr + copied,
1382 &u_mode, sizeof(u_mode))) {
1383 ret = -EFAULT;
1384 goto out;
1385 }
1386 copied++;
1387 }
1388 }
1389 out_resp->count_modes = mode_count;
1390
1391 if ((out_resp->count_props >= props_count) && props_count) {
1392 copied = 0;
1393 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1394 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1395 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1396 if (connector->property_ids[i] != 0) {
1397 if (put_user(connector->property_ids[i],
1398 prop_ptr + copied)) {
1399 ret = -EFAULT;
1400 goto out;
1401 }
1402
1403 if (put_user(connector->property_values[i],
1404 prop_values + copied)) {
1405 ret = -EFAULT;
1406 goto out;
1407 }
1408 copied++;
1409 }
1410 }
1411 }
1412 out_resp->count_props = props_count;
1413
1414 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1415 copied = 0;
1416 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1417 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1418 if (connector->encoder_ids[i] != 0) {
1419 if (put_user(connector->encoder_ids[i],
1420 encoder_ptr + copied)) {
1421 ret = -EFAULT;
1422 goto out;
1423 }
1424 copied++;
1425 }
1426 }
1427 }
1428 out_resp->count_encoders = encoders_count;
1429
1430 out:
1431 mutex_unlock(&dev->mode_config.mutex);
1432 return ret;
1433 }
1434
1435 int drm_mode_getencoder(struct drm_device *dev, void *data,
1436 struct drm_file *file_priv)
1437 {
1438 struct drm_mode_get_encoder *enc_resp = data;
1439 struct drm_mode_object *obj;
1440 struct drm_encoder *encoder;
1441 int ret = 0;
1442
1443 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1444 return -EINVAL;
1445
1446 mutex_lock(&dev->mode_config.mutex);
1447 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1448 DRM_MODE_OBJECT_ENCODER);
1449 if (!obj) {
1450 ret = -EINVAL;
1451 goto out;
1452 }
1453 encoder = obj_to_encoder(obj);
1454
1455 if (encoder->crtc)
1456 enc_resp->crtc_id = encoder->crtc->base.id;
1457 else
1458 enc_resp->crtc_id = 0;
1459 enc_resp->encoder_type = encoder->encoder_type;
1460 enc_resp->encoder_id = encoder->base.id;
1461 enc_resp->possible_crtcs = encoder->possible_crtcs;
1462 enc_resp->possible_clones = encoder->possible_clones;
1463
1464 out:
1465 mutex_unlock(&dev->mode_config.mutex);
1466 return ret;
1467 }
1468
1469 /**
1470 * drm_mode_setcrtc - set CRTC configuration
1471 * @inode: inode from the ioctl
1472 * @filp: file * from the ioctl
1473 * @cmd: cmd from ioctl
1474 * @arg: arg from ioctl
1475 *
1476 * LOCKING:
1477 * Caller? (FIXME)
1478 *
1479 * Build a new CRTC configuration based on user request.
1480 *
1481 * Called by the user via ioctl.
1482 *
1483 * RETURNS:
1484 * Zero on success, errno on failure.
1485 */
1486 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1487 struct drm_file *file_priv)
1488 {
1489 struct drm_mode_config *config = &dev->mode_config;
1490 struct drm_mode_crtc *crtc_req = data;
1491 struct drm_mode_object *obj;
1492 struct drm_crtc *crtc, *crtcfb;
1493 struct drm_connector **connector_set = NULL, *connector;
1494 struct drm_framebuffer *fb = NULL;
1495 struct drm_display_mode *mode = NULL;
1496 struct drm_mode_set set;
1497 uint32_t __user *set_connectors_ptr;
1498 int ret = 0;
1499 int i;
1500
1501 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1502 return -EINVAL;
1503
1504 mutex_lock(&dev->mode_config.mutex);
1505 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1506 DRM_MODE_OBJECT_CRTC);
1507 if (!obj) {
1508 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1509 ret = -EINVAL;
1510 goto out;
1511 }
1512 crtc = obj_to_crtc(obj);
1513 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1514
1515 if (crtc_req->mode_valid) {
1516 /* If we have a mode we need a framebuffer. */
1517 /* If we pass -1, set the mode with the currently bound fb */
1518 if (crtc_req->fb_id == -1) {
1519 list_for_each_entry(crtcfb,
1520 &dev->mode_config.crtc_list, head) {
1521 if (crtcfb == crtc) {
1522 DRM_DEBUG_KMS("Using current fb for "
1523 "setmode\n");
1524 fb = crtc->fb;
1525 }
1526 }
1527 } else {
1528 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1529 DRM_MODE_OBJECT_FB);
1530 if (!obj) {
1531 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1532 crtc_req->fb_id);
1533 ret = -EINVAL;
1534 goto out;
1535 }
1536 fb = obj_to_fb(obj);
1537 }
1538
1539 mode = drm_mode_create(dev);
1540 drm_crtc_convert_umode(mode, &crtc_req->mode);
1541 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1542 }
1543
1544 if (crtc_req->count_connectors == 0 && mode) {
1545 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1546 ret = -EINVAL;
1547 goto out;
1548 }
1549
1550 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1551 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1552 crtc_req->count_connectors);
1553 ret = -EINVAL;
1554 goto out;
1555 }
1556
1557 if (crtc_req->count_connectors > 0) {
1558 u32 out_id;
1559
1560 /* Avoid unbounded kernel memory allocation */
1561 if (crtc_req->count_connectors > config->num_connector) {
1562 ret = -EINVAL;
1563 goto out;
1564 }
1565
1566 connector_set = kmalloc(crtc_req->count_connectors *
1567 sizeof(struct drm_connector *),
1568 GFP_KERNEL);
1569 if (!connector_set) {
1570 ret = -ENOMEM;
1571 goto out;
1572 }
1573
1574 for (i = 0; i < crtc_req->count_connectors; i++) {
1575 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1576 if (get_user(out_id, &set_connectors_ptr[i])) {
1577 ret = -EFAULT;
1578 goto out;
1579 }
1580
1581 obj = drm_mode_object_find(dev, out_id,
1582 DRM_MODE_OBJECT_CONNECTOR);
1583 if (!obj) {
1584 DRM_DEBUG_KMS("Connector id %d unknown\n",
1585 out_id);
1586 ret = -EINVAL;
1587 goto out;
1588 }
1589 connector = obj_to_connector(obj);
1590 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1591 connector->base.id,
1592 drm_get_connector_name(connector));
1593
1594 connector_set[i] = connector;
1595 }
1596 }
1597
1598 set.crtc = crtc;
1599 set.x = crtc_req->x;
1600 set.y = crtc_req->y;
1601 set.mode = mode;
1602 set.connectors = connector_set;
1603 set.num_connectors = crtc_req->count_connectors;
1604 set.fb = fb;
1605 ret = crtc->funcs->set_config(&set);
1606
1607 out:
1608 kfree(connector_set);
1609 mutex_unlock(&dev->mode_config.mutex);
1610 return ret;
1611 }
1612
1613 int drm_mode_cursor_ioctl(struct drm_device *dev,
1614 void *data, struct drm_file *file_priv)
1615 {
1616 struct drm_mode_cursor *req = data;
1617 struct drm_mode_object *obj;
1618 struct drm_crtc *crtc;
1619 int ret = 0;
1620
1621 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1622 return -EINVAL;
1623
1624 if (!req->flags) {
1625 DRM_ERROR("no operation set\n");
1626 return -EINVAL;
1627 }
1628
1629 mutex_lock(&dev->mode_config.mutex);
1630 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1631 if (!obj) {
1632 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1633 ret = -EINVAL;
1634 goto out;
1635 }
1636 crtc = obj_to_crtc(obj);
1637
1638 if (req->flags & DRM_MODE_CURSOR_BO) {
1639 if (!crtc->funcs->cursor_set) {
1640 DRM_ERROR("crtc does not support cursor\n");
1641 ret = -ENXIO;
1642 goto out;
1643 }
1644 /* Turns off the cursor if handle is 0 */
1645 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1646 req->width, req->height);
1647 }
1648
1649 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1650 if (crtc->funcs->cursor_move) {
1651 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1652 } else {
1653 DRM_ERROR("crtc does not support cursor\n");
1654 ret = -EFAULT;
1655 goto out;
1656 }
1657 }
1658 out:
1659 mutex_unlock(&dev->mode_config.mutex);
1660 return ret;
1661 }
1662
1663 /**
1664 * drm_mode_addfb - add an FB to the graphics configuration
1665 * @inode: inode from the ioctl
1666 * @filp: file * from the ioctl
1667 * @cmd: cmd from ioctl
1668 * @arg: arg from ioctl
1669 *
1670 * LOCKING:
1671 * Takes mode config lock.
1672 *
1673 * Add a new FB to the specified CRTC, given a user request.
1674 *
1675 * Called by the user via ioctl.
1676 *
1677 * RETURNS:
1678 * Zero on success, errno on failure.
1679 */
1680 int drm_mode_addfb(struct drm_device *dev,
1681 void *data, struct drm_file *file_priv)
1682 {
1683 struct drm_mode_fb_cmd *r = data;
1684 struct drm_mode_config *config = &dev->mode_config;
1685 struct drm_framebuffer *fb;
1686 int ret = 0;
1687
1688 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1689 return -EINVAL;
1690
1691 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1692 DRM_ERROR("mode new framebuffer width not within limits\n");
1693 return -EINVAL;
1694 }
1695 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1696 DRM_ERROR("mode new framebuffer height not within limits\n");
1697 return -EINVAL;
1698 }
1699
1700 mutex_lock(&dev->mode_config.mutex);
1701
1702 /* TODO check buffer is sufficently large */
1703 /* TODO setup destructor callback */
1704
1705 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1706 if (IS_ERR(fb)) {
1707 DRM_ERROR("could not create framebuffer\n");
1708 ret = PTR_ERR(fb);
1709 goto out;
1710 }
1711
1712 r->fb_id = fb->base.id;
1713 list_add(&fb->filp_head, &file_priv->fbs);
1714 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
1715
1716 out:
1717 mutex_unlock(&dev->mode_config.mutex);
1718 return ret;
1719 }
1720
1721 /**
1722 * drm_mode_rmfb - remove an FB from the configuration
1723 * @inode: inode from the ioctl
1724 * @filp: file * from the ioctl
1725 * @cmd: cmd from ioctl
1726 * @arg: arg from ioctl
1727 *
1728 * LOCKING:
1729 * Takes mode config lock.
1730 *
1731 * Remove the FB specified by the user.
1732 *
1733 * Called by the user via ioctl.
1734 *
1735 * RETURNS:
1736 * Zero on success, errno on failure.
1737 */
1738 int drm_mode_rmfb(struct drm_device *dev,
1739 void *data, struct drm_file *file_priv)
1740 {
1741 struct drm_mode_object *obj;
1742 struct drm_framebuffer *fb = NULL;
1743 struct drm_framebuffer *fbl = NULL;
1744 uint32_t *id = data;
1745 int ret = 0;
1746 int found = 0;
1747
1748 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1749 return -EINVAL;
1750
1751 mutex_lock(&dev->mode_config.mutex);
1752 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1753 /* TODO check that we realy get a framebuffer back. */
1754 if (!obj) {
1755 DRM_ERROR("mode invalid framebuffer id\n");
1756 ret = -EINVAL;
1757 goto out;
1758 }
1759 fb = obj_to_fb(obj);
1760
1761 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1762 if (fb == fbl)
1763 found = 1;
1764
1765 if (!found) {
1766 DRM_ERROR("tried to remove a fb that we didn't own\n");
1767 ret = -EINVAL;
1768 goto out;
1769 }
1770
1771 /* TODO release all crtc connected to the framebuffer */
1772 /* TODO unhock the destructor from the buffer object */
1773
1774 list_del(&fb->filp_head);
1775 fb->funcs->destroy(fb);
1776
1777 out:
1778 mutex_unlock(&dev->mode_config.mutex);
1779 return ret;
1780 }
1781
1782 /**
1783 * drm_mode_getfb - get FB info
1784 * @inode: inode from the ioctl
1785 * @filp: file * from the ioctl
1786 * @cmd: cmd from ioctl
1787 * @arg: arg from ioctl
1788 *
1789 * LOCKING:
1790 * Caller? (FIXME)
1791 *
1792 * Lookup the FB given its ID and return info about it.
1793 *
1794 * Called by the user via ioctl.
1795 *
1796 * RETURNS:
1797 * Zero on success, errno on failure.
1798 */
1799 int drm_mode_getfb(struct drm_device *dev,
1800 void *data, struct drm_file *file_priv)
1801 {
1802 struct drm_mode_fb_cmd *r = data;
1803 struct drm_mode_object *obj;
1804 struct drm_framebuffer *fb;
1805 int ret = 0;
1806
1807 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1808 return -EINVAL;
1809
1810 mutex_lock(&dev->mode_config.mutex);
1811 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1812 if (!obj) {
1813 DRM_ERROR("invalid framebuffer id\n");
1814 ret = -EINVAL;
1815 goto out;
1816 }
1817 fb = obj_to_fb(obj);
1818
1819 r->height = fb->height;
1820 r->width = fb->width;
1821 r->depth = fb->depth;
1822 r->bpp = fb->bits_per_pixel;
1823 r->pitch = fb->pitch;
1824 fb->funcs->create_handle(fb, file_priv, &r->handle);
1825
1826 out:
1827 mutex_unlock(&dev->mode_config.mutex);
1828 return ret;
1829 }
1830
1831 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1832 void *data, struct drm_file *file_priv)
1833 {
1834 struct drm_clip_rect __user *clips_ptr;
1835 struct drm_clip_rect *clips = NULL;
1836 struct drm_mode_fb_dirty_cmd *r = data;
1837 struct drm_mode_object *obj;
1838 struct drm_framebuffer *fb;
1839 unsigned flags;
1840 int num_clips;
1841 int ret = 0;
1842
1843 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1844 return -EINVAL;
1845
1846 mutex_lock(&dev->mode_config.mutex);
1847 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1848 if (!obj) {
1849 DRM_ERROR("invalid framebuffer id\n");
1850 ret = -EINVAL;
1851 goto out_err1;
1852 }
1853 fb = obj_to_fb(obj);
1854
1855 num_clips = r->num_clips;
1856 clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1857
1858 if (!num_clips != !clips_ptr) {
1859 ret = -EINVAL;
1860 goto out_err1;
1861 }
1862
1863 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1864
1865 /* If userspace annotates copy, clips must come in pairs */
1866 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1867 ret = -EINVAL;
1868 goto out_err1;
1869 }
1870
1871 if (num_clips && clips_ptr) {
1872 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1873 if (!clips) {
1874 ret = -ENOMEM;
1875 goto out_err1;
1876 }
1877
1878 ret = copy_from_user(clips, clips_ptr,
1879 num_clips * sizeof(*clips));
1880 if (ret) {
1881 ret = -EFAULT;
1882 goto out_err2;
1883 }
1884 }
1885
1886 if (fb->funcs->dirty) {
1887 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
1888 clips, num_clips);
1889 } else {
1890 ret = -ENOSYS;
1891 goto out_err2;
1892 }
1893
1894 out_err2:
1895 kfree(clips);
1896 out_err1:
1897 mutex_unlock(&dev->mode_config.mutex);
1898 return ret;
1899 }
1900
1901
1902 /**
1903 * drm_fb_release - remove and free the FBs on this file
1904 * @filp: file * from the ioctl
1905 *
1906 * LOCKING:
1907 * Takes mode config lock.
1908 *
1909 * Destroy all the FBs associated with @filp.
1910 *
1911 * Called by the user via ioctl.
1912 *
1913 * RETURNS:
1914 * Zero on success, errno on failure.
1915 */
1916 void drm_fb_release(struct drm_file *priv)
1917 {
1918 struct drm_device *dev = priv->minor->dev;
1919 struct drm_framebuffer *fb, *tfb;
1920
1921 mutex_lock(&dev->mode_config.mutex);
1922 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1923 list_del(&fb->filp_head);
1924 fb->funcs->destroy(fb);
1925 }
1926 mutex_unlock(&dev->mode_config.mutex);
1927 }
1928
1929 /**
1930 * drm_mode_attachmode - add a mode to the user mode list
1931 * @dev: DRM device
1932 * @connector: connector to add the mode to
1933 * @mode: mode to add
1934 *
1935 * Add @mode to @connector's user mode list.
1936 */
1937 static int drm_mode_attachmode(struct drm_device *dev,
1938 struct drm_connector *connector,
1939 struct drm_display_mode *mode)
1940 {
1941 int ret = 0;
1942
1943 list_add_tail(&mode->head, &connector->user_modes);
1944 return ret;
1945 }
1946
1947 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1948 struct drm_display_mode *mode)
1949 {
1950 struct drm_connector *connector;
1951 int ret = 0;
1952 struct drm_display_mode *dup_mode;
1953 int need_dup = 0;
1954 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1955 if (!connector->encoder)
1956 break;
1957 if (connector->encoder->crtc == crtc) {
1958 if (need_dup)
1959 dup_mode = drm_mode_duplicate(dev, mode);
1960 else
1961 dup_mode = mode;
1962 ret = drm_mode_attachmode(dev, connector, dup_mode);
1963 if (ret)
1964 return ret;
1965 need_dup = 1;
1966 }
1967 }
1968 return 0;
1969 }
1970 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1971
1972 static int drm_mode_detachmode(struct drm_device *dev,
1973 struct drm_connector *connector,
1974 struct drm_display_mode *mode)
1975 {
1976 int found = 0;
1977 int ret = 0;
1978 struct drm_display_mode *match_mode, *t;
1979
1980 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1981 if (drm_mode_equal(match_mode, mode)) {
1982 list_del(&match_mode->head);
1983 drm_mode_destroy(dev, match_mode);
1984 found = 1;
1985 break;
1986 }
1987 }
1988
1989 if (!found)
1990 ret = -EINVAL;
1991
1992 return ret;
1993 }
1994
1995 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1996 {
1997 struct drm_connector *connector;
1998
1999 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2000 drm_mode_detachmode(dev, connector, mode);
2001 }
2002 return 0;
2003 }
2004 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2005
2006 /**
2007 * drm_fb_attachmode - Attach a user mode to an connector
2008 * @inode: inode from the ioctl
2009 * @filp: file * from the ioctl
2010 * @cmd: cmd from ioctl
2011 * @arg: arg from ioctl
2012 *
2013 * This attaches a user specified mode to an connector.
2014 * Called by the user via ioctl.
2015 *
2016 * RETURNS:
2017 * Zero on success, errno on failure.
2018 */
2019 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2020 void *data, struct drm_file *file_priv)
2021 {
2022 struct drm_mode_mode_cmd *mode_cmd = data;
2023 struct drm_connector *connector;
2024 struct drm_display_mode *mode;
2025 struct drm_mode_object *obj;
2026 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2027 int ret = 0;
2028
2029 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2030 return -EINVAL;
2031
2032 mutex_lock(&dev->mode_config.mutex);
2033
2034 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2035 if (!obj) {
2036 ret = -EINVAL;
2037 goto out;
2038 }
2039 connector = obj_to_connector(obj);
2040
2041 mode = drm_mode_create(dev);
2042 if (!mode) {
2043 ret = -ENOMEM;
2044 goto out;
2045 }
2046
2047 drm_crtc_convert_umode(mode, umode);
2048
2049 ret = drm_mode_attachmode(dev, connector, mode);
2050 out:
2051 mutex_unlock(&dev->mode_config.mutex);
2052 return ret;
2053 }
2054
2055
2056 /**
2057 * drm_fb_detachmode - Detach a user specified mode from an connector
2058 * @inode: inode from the ioctl
2059 * @filp: file * from the ioctl
2060 * @cmd: cmd from ioctl
2061 * @arg: arg from ioctl
2062 *
2063 * Called by the user via ioctl.
2064 *
2065 * RETURNS:
2066 * Zero on success, errno on failure.
2067 */
2068 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2069 void *data, struct drm_file *file_priv)
2070 {
2071 struct drm_mode_object *obj;
2072 struct drm_mode_mode_cmd *mode_cmd = data;
2073 struct drm_connector *connector;
2074 struct drm_display_mode mode;
2075 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2076 int ret = 0;
2077
2078 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2079 return -EINVAL;
2080
2081 mutex_lock(&dev->mode_config.mutex);
2082
2083 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2084 if (!obj) {
2085 ret = -EINVAL;
2086 goto out;
2087 }
2088 connector = obj_to_connector(obj);
2089
2090 drm_crtc_convert_umode(&mode, umode);
2091 ret = drm_mode_detachmode(dev, connector, &mode);
2092 out:
2093 mutex_unlock(&dev->mode_config.mutex);
2094 return ret;
2095 }
2096
2097 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2098 const char *name, int num_values)
2099 {
2100 struct drm_property *property = NULL;
2101
2102 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2103 if (!property)
2104 return NULL;
2105
2106 if (num_values) {
2107 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2108 if (!property->values)
2109 goto fail;
2110 }
2111
2112 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2113 property->flags = flags;
2114 property->num_values = num_values;
2115 INIT_LIST_HEAD(&property->enum_blob_list);
2116
2117 if (name)
2118 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2119
2120 list_add_tail(&property->head, &dev->mode_config.property_list);
2121 return property;
2122 fail:
2123 kfree(property);
2124 return NULL;
2125 }
2126 EXPORT_SYMBOL(drm_property_create);
2127
2128 int drm_property_add_enum(struct drm_property *property, int index,
2129 uint64_t value, const char *name)
2130 {
2131 struct drm_property_enum *prop_enum;
2132
2133 if (!(property->flags & DRM_MODE_PROP_ENUM))
2134 return -EINVAL;
2135
2136 if (!list_empty(&property->enum_blob_list)) {
2137 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2138 if (prop_enum->value == value) {
2139 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2140 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2141 return 0;
2142 }
2143 }
2144 }
2145
2146 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2147 if (!prop_enum)
2148 return -ENOMEM;
2149
2150 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2151 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2152 prop_enum->value = value;
2153
2154 property->values[index] = value;
2155 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2156 return 0;
2157 }
2158 EXPORT_SYMBOL(drm_property_add_enum);
2159
2160 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2161 {
2162 struct drm_property_enum *prop_enum, *pt;
2163
2164 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2165 list_del(&prop_enum->head);
2166 kfree(prop_enum);
2167 }
2168
2169 if (property->num_values)
2170 kfree(property->values);
2171 drm_mode_object_put(dev, &property->base);
2172 list_del(&property->head);
2173 kfree(property);
2174 }
2175 EXPORT_SYMBOL(drm_property_destroy);
2176
2177 int drm_connector_attach_property(struct drm_connector *connector,
2178 struct drm_property *property, uint64_t init_val)
2179 {
2180 int i;
2181
2182 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2183 if (connector->property_ids[i] == 0) {
2184 connector->property_ids[i] = property->base.id;
2185 connector->property_values[i] = init_val;
2186 break;
2187 }
2188 }
2189
2190 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2191 return -EINVAL;
2192 return 0;
2193 }
2194 EXPORT_SYMBOL(drm_connector_attach_property);
2195
2196 int drm_connector_property_set_value(struct drm_connector *connector,
2197 struct drm_property *property, uint64_t value)
2198 {
2199 int i;
2200
2201 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2202 if (connector->property_ids[i] == property->base.id) {
2203 connector->property_values[i] = value;
2204 break;
2205 }
2206 }
2207
2208 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2209 return -EINVAL;
2210 return 0;
2211 }
2212 EXPORT_SYMBOL(drm_connector_property_set_value);
2213
2214 int drm_connector_property_get_value(struct drm_connector *connector,
2215 struct drm_property *property, uint64_t *val)
2216 {
2217 int i;
2218
2219 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2220 if (connector->property_ids[i] == property->base.id) {
2221 *val = connector->property_values[i];
2222 break;
2223 }
2224 }
2225
2226 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2227 return -EINVAL;
2228 return 0;
2229 }
2230 EXPORT_SYMBOL(drm_connector_property_get_value);
2231
2232 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2233 void *data, struct drm_file *file_priv)
2234 {
2235 struct drm_mode_object *obj;
2236 struct drm_mode_get_property *out_resp = data;
2237 struct drm_property *property;
2238 int enum_count = 0;
2239 int blob_count = 0;
2240 int value_count = 0;
2241 int ret = 0, i;
2242 int copied;
2243 struct drm_property_enum *prop_enum;
2244 struct drm_mode_property_enum __user *enum_ptr;
2245 struct drm_property_blob *prop_blob;
2246 uint32_t *blob_id_ptr;
2247 uint64_t __user *values_ptr;
2248 uint32_t __user *blob_length_ptr;
2249
2250 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2251 return -EINVAL;
2252
2253 mutex_lock(&dev->mode_config.mutex);
2254 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2255 if (!obj) {
2256 ret = -EINVAL;
2257 goto done;
2258 }
2259 property = obj_to_property(obj);
2260
2261 if (property->flags & DRM_MODE_PROP_ENUM) {
2262 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2263 enum_count++;
2264 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2265 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2266 blob_count++;
2267 }
2268
2269 value_count = property->num_values;
2270
2271 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2272 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2273 out_resp->flags = property->flags;
2274
2275 if ((out_resp->count_values >= value_count) && value_count) {
2276 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2277 for (i = 0; i < value_count; i++) {
2278 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2279 ret = -EFAULT;
2280 goto done;
2281 }
2282 }
2283 }
2284 out_resp->count_values = value_count;
2285
2286 if (property->flags & DRM_MODE_PROP_ENUM) {
2287 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2288 copied = 0;
2289 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2290 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2291
2292 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2293 ret = -EFAULT;
2294 goto done;
2295 }
2296
2297 if (copy_to_user(&enum_ptr[copied].name,
2298 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2299 ret = -EFAULT;
2300 goto done;
2301 }
2302 copied++;
2303 }
2304 }
2305 out_resp->count_enum_blobs = enum_count;
2306 }
2307
2308 if (property->flags & DRM_MODE_PROP_BLOB) {
2309 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2310 copied = 0;
2311 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2312 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2313
2314 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2315 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2316 ret = -EFAULT;
2317 goto done;
2318 }
2319
2320 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2321 ret = -EFAULT;
2322 goto done;
2323 }
2324
2325 copied++;
2326 }
2327 }
2328 out_resp->count_enum_blobs = blob_count;
2329 }
2330 done:
2331 mutex_unlock(&dev->mode_config.mutex);
2332 return ret;
2333 }
2334
2335 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2336 void *data)
2337 {
2338 struct drm_property_blob *blob;
2339
2340 if (!length || !data)
2341 return NULL;
2342
2343 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2344 if (!blob)
2345 return NULL;
2346
2347 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2348 blob->length = length;
2349
2350 memcpy(blob->data, data, length);
2351
2352 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2353
2354 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2355 return blob;
2356 }
2357
2358 static void drm_property_destroy_blob(struct drm_device *dev,
2359 struct drm_property_blob *blob)
2360 {
2361 drm_mode_object_put(dev, &blob->base);
2362 list_del(&blob->head);
2363 kfree(blob);
2364 }
2365
2366 int drm_mode_getblob_ioctl(struct drm_device *dev,
2367 void *data, struct drm_file *file_priv)
2368 {
2369 struct drm_mode_object *obj;
2370 struct drm_mode_get_blob *out_resp = data;
2371 struct drm_property_blob *blob;
2372 int ret = 0;
2373 void *blob_ptr;
2374
2375 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2376 return -EINVAL;
2377
2378 mutex_lock(&dev->mode_config.mutex);
2379 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2380 if (!obj) {
2381 ret = -EINVAL;
2382 goto done;
2383 }
2384 blob = obj_to_blob(obj);
2385
2386 if (out_resp->length == blob->length) {
2387 blob_ptr = (void *)(unsigned long)out_resp->data;
2388 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2389 ret = -EFAULT;
2390 goto done;
2391 }
2392 }
2393 out_resp->length = blob->length;
2394
2395 done:
2396 mutex_unlock(&dev->mode_config.mutex);
2397 return ret;
2398 }
2399
2400 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2401 struct edid *edid)
2402 {
2403 struct drm_device *dev = connector->dev;
2404 int ret = 0, size;
2405
2406 if (connector->edid_blob_ptr)
2407 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2408
2409 /* Delete edid, when there is none. */
2410 if (!edid) {
2411 connector->edid_blob_ptr = NULL;
2412 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2413 return ret;
2414 }
2415
2416 size = EDID_LENGTH * (1 + edid->extensions);
2417 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2418 size, edid);
2419
2420 ret = drm_connector_property_set_value(connector,
2421 dev->mode_config.edid_property,
2422 connector->edid_blob_ptr->base.id);
2423
2424 return ret;
2425 }
2426 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2427
2428 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2429 void *data, struct drm_file *file_priv)
2430 {
2431 struct drm_mode_connector_set_property *out_resp = data;
2432 struct drm_mode_object *obj;
2433 struct drm_property *property;
2434 struct drm_connector *connector;
2435 int ret = -EINVAL;
2436 int i;
2437
2438 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2439 return -EINVAL;
2440
2441 mutex_lock(&dev->mode_config.mutex);
2442
2443 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2444 if (!obj) {
2445 goto out;
2446 }
2447 connector = obj_to_connector(obj);
2448
2449 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2450 if (connector->property_ids[i] == out_resp->prop_id)
2451 break;
2452 }
2453
2454 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2455 goto out;
2456 }
2457
2458 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2459 if (!obj) {
2460 goto out;
2461 }
2462 property = obj_to_property(obj);
2463
2464 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2465 goto out;
2466
2467 if (property->flags & DRM_MODE_PROP_RANGE) {
2468 if (out_resp->value < property->values[0])
2469 goto out;
2470
2471 if (out_resp->value > property->values[1])
2472 goto out;
2473 } else {
2474 int found = 0;
2475 for (i = 0; i < property->num_values; i++) {
2476 if (property->values[i] == out_resp->value) {
2477 found = 1;
2478 break;
2479 }
2480 }
2481 if (!found) {
2482 goto out;
2483 }
2484 }
2485
2486 /* Do DPMS ourselves */
2487 if (property == connector->dev->mode_config.dpms_property) {
2488 if (connector->funcs->dpms)
2489 (*connector->funcs->dpms)(connector, (int) out_resp->value);
2490 ret = 0;
2491 } else if (connector->funcs->set_property)
2492 ret = connector->funcs->set_property(connector, property, out_resp->value);
2493
2494 /* store the property value if successful */
2495 if (!ret)
2496 drm_connector_property_set_value(connector, property, out_resp->value);
2497 out:
2498 mutex_unlock(&dev->mode_config.mutex);
2499 return ret;
2500 }
2501
2502 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2503 struct drm_encoder *encoder)
2504 {
2505 int i;
2506
2507 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2508 if (connector->encoder_ids[i] == 0) {
2509 connector->encoder_ids[i] = encoder->base.id;
2510 return 0;
2511 }
2512 }
2513 return -ENOMEM;
2514 }
2515 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2516
2517 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2518 struct drm_encoder *encoder)
2519 {
2520 int i;
2521 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2522 if (connector->encoder_ids[i] == encoder->base.id) {
2523 connector->encoder_ids[i] = 0;
2524 if (connector->encoder == encoder)
2525 connector->encoder = NULL;
2526 break;
2527 }
2528 }
2529 }
2530 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2531
2532 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2533 int gamma_size)
2534 {
2535 crtc->gamma_size = gamma_size;
2536
2537 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2538 if (!crtc->gamma_store) {
2539 crtc->gamma_size = 0;
2540 return false;
2541 }
2542
2543 return true;
2544 }
2545 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2546
2547 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2548 void *data, struct drm_file *file_priv)
2549 {
2550 struct drm_mode_crtc_lut *crtc_lut = data;
2551 struct drm_mode_object *obj;
2552 struct drm_crtc *crtc;
2553 void *r_base, *g_base, *b_base;
2554 int size;
2555 int ret = 0;
2556
2557 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2558 return -EINVAL;
2559
2560 mutex_lock(&dev->mode_config.mutex);
2561 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2562 if (!obj) {
2563 ret = -EINVAL;
2564 goto out;
2565 }
2566 crtc = obj_to_crtc(obj);
2567
2568 /* memcpy into gamma store */
2569 if (crtc_lut->gamma_size != crtc->gamma_size) {
2570 ret = -EINVAL;
2571 goto out;
2572 }
2573
2574 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2575 r_base = crtc->gamma_store;
2576 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2577 ret = -EFAULT;
2578 goto out;
2579 }
2580
2581 g_base = r_base + size;
2582 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2583 ret = -EFAULT;
2584 goto out;
2585 }
2586
2587 b_base = g_base + size;
2588 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2589 ret = -EFAULT;
2590 goto out;
2591 }
2592
2593 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
2594
2595 out:
2596 mutex_unlock(&dev->mode_config.mutex);
2597 return ret;
2598
2599 }
2600
2601 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2602 void *data, struct drm_file *file_priv)
2603 {
2604 struct drm_mode_crtc_lut *crtc_lut = data;
2605 struct drm_mode_object *obj;
2606 struct drm_crtc *crtc;
2607 void *r_base, *g_base, *b_base;
2608 int size;
2609 int ret = 0;
2610
2611 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2612 return -EINVAL;
2613
2614 mutex_lock(&dev->mode_config.mutex);
2615 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2616 if (!obj) {
2617 ret = -EINVAL;
2618 goto out;
2619 }
2620 crtc = obj_to_crtc(obj);
2621
2622 /* memcpy into gamma store */
2623 if (crtc_lut->gamma_size != crtc->gamma_size) {
2624 ret = -EINVAL;
2625 goto out;
2626 }
2627
2628 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2629 r_base = crtc->gamma_store;
2630 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2631 ret = -EFAULT;
2632 goto out;
2633 }
2634
2635 g_base = r_base + size;
2636 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2637 ret = -EFAULT;
2638 goto out;
2639 }
2640
2641 b_base = g_base + size;
2642 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2643 ret = -EFAULT;
2644 goto out;
2645 }
2646 out:
2647 mutex_unlock(&dev->mode_config.mutex);
2648 return ret;
2649 }
2650
2651 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2652 void *data, struct drm_file *file_priv)
2653 {
2654 struct drm_mode_crtc_page_flip *page_flip = data;
2655 struct drm_mode_object *obj;
2656 struct drm_crtc *crtc;
2657 struct drm_framebuffer *fb;
2658 struct drm_pending_vblank_event *e = NULL;
2659 unsigned long flags;
2660 int ret = -EINVAL;
2661
2662 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2663 page_flip->reserved != 0)
2664 return -EINVAL;
2665
2666 mutex_lock(&dev->mode_config.mutex);
2667 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2668 if (!obj)
2669 goto out;
2670 crtc = obj_to_crtc(obj);
2671
2672 if (crtc->fb == NULL) {
2673 /* The framebuffer is currently unbound, presumably
2674 * due to a hotplug event, that userspace has not
2675 * yet discovered.
2676 */
2677 ret = -EBUSY;
2678 goto out;
2679 }
2680
2681 if (crtc->funcs->page_flip == NULL)
2682 goto out;
2683
2684 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2685 if (!obj)
2686 goto out;
2687 fb = obj_to_fb(obj);
2688
2689 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2690 ret = -ENOMEM;
2691 spin_lock_irqsave(&dev->event_lock, flags);
2692 if (file_priv->event_space < sizeof e->event) {
2693 spin_unlock_irqrestore(&dev->event_lock, flags);
2694 goto out;
2695 }
2696 file_priv->event_space -= sizeof e->event;
2697 spin_unlock_irqrestore(&dev->event_lock, flags);
2698
2699 e = kzalloc(sizeof *e, GFP_KERNEL);
2700 if (e == NULL) {
2701 spin_lock_irqsave(&dev->event_lock, flags);
2702 file_priv->event_space += sizeof e->event;
2703 spin_unlock_irqrestore(&dev->event_lock, flags);
2704 goto out;
2705 }
2706
2707 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2708 e->event.base.length = sizeof e->event;
2709 e->event.user_data = page_flip->user_data;
2710 e->base.event = &e->event.base;
2711 e->base.file_priv = file_priv;
2712 e->base.destroy =
2713 (void (*) (struct drm_pending_event *)) kfree;
2714 }
2715
2716 ret = crtc->funcs->page_flip(crtc, fb, e);
2717 if (ret) {
2718 spin_lock_irqsave(&dev->event_lock, flags);
2719 file_priv->event_space += sizeof e->event;
2720 spin_unlock_irqrestore(&dev->event_lock, flags);
2721 kfree(e);
2722 }
2723
2724 out:
2725 mutex_unlock(&dev->mode_config.mutex);
2726 return ret;
2727 }
2728
2729 void drm_mode_config_reset(struct drm_device *dev)
2730 {
2731 struct drm_crtc *crtc;
2732 struct drm_encoder *encoder;
2733 struct drm_connector *connector;
2734
2735 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
2736 if (crtc->funcs->reset)
2737 crtc->funcs->reset(crtc);
2738
2739 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
2740 if (encoder->funcs->reset)
2741 encoder->funcs->reset(encoder);
2742
2743 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
2744 if (connector->funcs->reset)
2745 connector->funcs->reset(connector);
2746 }
2747 EXPORT_SYMBOL(drm_mode_config_reset);
2748
2749 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
2750 void *data, struct drm_file *file_priv)
2751 {
2752 struct drm_mode_create_dumb *args = data;
2753
2754 if (!dev->driver->dumb_create)
2755 return -ENOSYS;
2756 return dev->driver->dumb_create(file_priv, dev, args);
2757 }
2758
2759 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
2760 void *data, struct drm_file *file_priv)
2761 {
2762 struct drm_mode_map_dumb *args = data;
2763
2764 /* call driver ioctl to get mmap offset */
2765 if (!dev->driver->dumb_map_offset)
2766 return -ENOSYS;
2767
2768 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
2769 }
2770
2771 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
2772 void *data, struct drm_file *file_priv)
2773 {
2774 struct drm_mode_destroy_dumb *args = data;
2775
2776 if (!dev->driver->dumb_destroy)
2777 return -ENOSYS;
2778
2779 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
2780 }
CRIS linux kernel tree