2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
6 * DRM core CRTC related functions
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.
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
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
32 #include <linux/list.h>
37 struct drm_prop_enum_list {
42 /* Avoid boilerplate. I'm tired of typing. */
43 #define DRM_ENUM_NAME_FN(fnname, list) \
44 char *fnname(int val) \
47 for (i = 0; i < ARRAY_SIZE(list); i++) { \
48 if (list[i].type == val) \
49 return list[i].name; \
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" }
64 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
69 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
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" },
77 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
79 { DRM_MODE_DITHERING_OFF, "Off" },
80 { DRM_MODE_DITHERING_ON, "On" },
84 * Non-global properties, but "required" for certain connectors.
86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
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 */
93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
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 */
102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
103 drm_dvi_i_subconnector_enum_list)
105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
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 */
114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
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 */
125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
126 drm_tv_subconnector_enum_list)
128 struct drm_conn_prop_enum_list {
135 * Connector and encoder types.
137 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
138 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
139 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
140 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
141 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
142 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
143 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
144 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
145 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
146 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
147 { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
148 { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
149 { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
150 { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
151 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
154 static struct drm_prop_enum_list drm_encoder_enum_list[] =
155 { { DRM_MODE_ENCODER_NONE, "None" },
156 { DRM_MODE_ENCODER_DAC, "DAC" },
157 { DRM_MODE_ENCODER_TMDS, "TMDS" },
158 { DRM_MODE_ENCODER_LVDS, "LVDS" },
159 { DRM_MODE_ENCODER_TVDAC, "TV" },
162 char *drm_get_encoder_name(struct drm_encoder *encoder)
166 snprintf(buf, 32, "%s-%d",
167 drm_encoder_enum_list[encoder->encoder_type].name,
171 EXPORT_SYMBOL(drm_get_encoder_name);
173 char *drm_get_connector_name(struct drm_connector *connector)
177 snprintf(buf, 32, "%s-%d",
178 drm_connector_enum_list[connector->connector_type].name,
179 connector->connector_type_id);
182 EXPORT_SYMBOL(drm_get_connector_name);
184 char *drm_get_connector_status_name(enum drm_connector_status status)
186 if (status == connector_status_connected)
188 else if (status == connector_status_disconnected)
189 return "disconnected";
195 * drm_mode_object_get - allocate a new identifier
197 * @ptr: object pointer, used to generate unique ID
202 * Create a unique identifier based on @ptr in @dev's identifier space. Used
203 * for tracking modes, CRTCs and connectors.
206 * New unique (relative to other objects in @dev) integer identifier for the
209 static int drm_mode_object_get(struct drm_device *dev,
210 struct drm_mode_object *obj, uint32_t obj_type)
216 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
217 DRM_ERROR("Ran out memory getting a mode number\n");
221 mutex_lock(&dev->mode_config.idr_mutex);
222 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
223 mutex_unlock(&dev->mode_config.idr_mutex);
228 obj->type = obj_type;
233 * drm_mode_object_put - free an identifer
238 * Caller must hold DRM mode_config lock.
240 * Free @id from @dev's unique identifier pool.
242 static void drm_mode_object_put(struct drm_device *dev,
243 struct drm_mode_object *object)
245 mutex_lock(&dev->mode_config.idr_mutex);
246 idr_remove(&dev->mode_config.crtc_idr, object->id);
247 mutex_unlock(&dev->mode_config.idr_mutex);
250 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
251 uint32_t id, uint32_t type)
253 struct drm_mode_object *obj = NULL;
255 mutex_lock(&dev->mode_config.idr_mutex);
256 obj = idr_find(&dev->mode_config.crtc_idr, id);
257 if (!obj || (obj->type != type) || (obj->id != id))
259 mutex_unlock(&dev->mode_config.idr_mutex);
263 EXPORT_SYMBOL(drm_mode_object_find);
266 * drm_framebuffer_init - initialize a framebuffer
270 * Caller must hold mode config lock.
272 * Allocates an ID for the framebuffer's parent mode object, sets its mode
273 * functions & device file and adds it to the master fd list.
276 * Zero on success, error code on falure.
278 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
279 const struct drm_framebuffer_funcs *funcs)
283 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
290 dev->mode_config.num_fb++;
291 list_add(&fb->head, &dev->mode_config.fb_list);
295 EXPORT_SYMBOL(drm_framebuffer_init);
298 * drm_framebuffer_cleanup - remove a framebuffer object
299 * @fb: framebuffer to remove
302 * Caller must hold mode config lock.
304 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
305 * it, setting it to NULL.
307 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
309 struct drm_device *dev = fb->dev;
310 struct drm_crtc *crtc;
311 struct drm_mode_set set;
314 /* remove from any CRTC */
315 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
316 if (crtc->fb == fb) {
317 /* should turn off the crtc */
318 memset(&set, 0, sizeof(struct drm_mode_set));
321 ret = crtc->funcs->set_config(&set);
323 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
327 drm_mode_object_put(dev, &fb->base);
329 dev->mode_config.num_fb--;
331 EXPORT_SYMBOL(drm_framebuffer_cleanup);
334 * drm_crtc_init - Initialise a new CRTC object
336 * @crtc: CRTC object to init
337 * @funcs: callbacks for the new CRTC
340 * Caller must hold mode config lock.
342 * Inits a new object created as base part of an driver crtc object.
344 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
345 const struct drm_crtc_funcs *funcs)
350 mutex_lock(&dev->mode_config.mutex);
351 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
353 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
354 dev->mode_config.num_crtc++;
355 mutex_unlock(&dev->mode_config.mutex);
357 EXPORT_SYMBOL(drm_crtc_init);
360 * drm_crtc_cleanup - Cleans up the core crtc usage.
361 * @crtc: CRTC to cleanup
364 * Caller must hold mode config lock.
366 * Cleanup @crtc. Removes from drm modesetting space
367 * does NOT free object, caller does that.
369 void drm_crtc_cleanup(struct drm_crtc *crtc)
371 struct drm_device *dev = crtc->dev;
373 if (crtc->gamma_store) {
374 kfree(crtc->gamma_store);
375 crtc->gamma_store = NULL;
378 drm_mode_object_put(dev, &crtc->base);
379 list_del(&crtc->head);
380 dev->mode_config.num_crtc--;
382 EXPORT_SYMBOL(drm_crtc_cleanup);
385 * drm_mode_probed_add - add a mode to a connector's probed mode list
386 * @connector: connector the new mode
390 * Caller must hold mode config lock.
392 * Add @mode to @connector's mode list for later use.
394 void drm_mode_probed_add(struct drm_connector *connector,
395 struct drm_display_mode *mode)
397 list_add(&mode->head, &connector->probed_modes);
399 EXPORT_SYMBOL(drm_mode_probed_add);
402 * drm_mode_remove - remove and free a mode
403 * @connector: connector list to modify
404 * @mode: mode to remove
407 * Caller must hold mode config lock.
409 * Remove @mode from @connector's mode list, then free it.
411 void drm_mode_remove(struct drm_connector *connector,
412 struct drm_display_mode *mode)
414 list_del(&mode->head);
417 EXPORT_SYMBOL(drm_mode_remove);
420 * drm_connector_init - Init a preallocated connector
422 * @connector: the connector to init
423 * @funcs: callbacks for this connector
424 * @name: user visible name of the connector
427 * Caller must hold @dev's mode_config lock.
429 * Initialises a preallocated connector. Connectors should be
430 * subclassed as part of driver connector objects.
432 void drm_connector_init(struct drm_device *dev,
433 struct drm_connector *connector,
434 const struct drm_connector_funcs *funcs,
437 mutex_lock(&dev->mode_config.mutex);
439 connector->dev = dev;
440 connector->funcs = funcs;
441 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
442 connector->connector_type = connector_type;
443 connector->connector_type_id =
444 ++drm_connector_enum_list[connector_type].count; /* TODO */
445 INIT_LIST_HEAD(&connector->user_modes);
446 INIT_LIST_HEAD(&connector->probed_modes);
447 INIT_LIST_HEAD(&connector->modes);
448 connector->edid_blob_ptr = NULL;
450 list_add_tail(&connector->head, &dev->mode_config.connector_list);
451 dev->mode_config.num_connector++;
453 drm_connector_attach_property(connector,
454 dev->mode_config.edid_property, 0);
456 drm_connector_attach_property(connector,
457 dev->mode_config.dpms_property, 0);
459 mutex_unlock(&dev->mode_config.mutex);
461 EXPORT_SYMBOL(drm_connector_init);
464 * drm_connector_cleanup - cleans up an initialised connector
465 * @connector: connector to cleanup
468 * Caller must hold @dev's mode_config lock.
470 * Cleans up the connector but doesn't free the object.
472 void drm_connector_cleanup(struct drm_connector *connector)
474 struct drm_device *dev = connector->dev;
475 struct drm_display_mode *mode, *t;
477 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
478 drm_mode_remove(connector, mode);
480 list_for_each_entry_safe(mode, t, &connector->modes, head)
481 drm_mode_remove(connector, mode);
483 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
484 drm_mode_remove(connector, mode);
486 kfree(connector->fb_helper_private);
487 mutex_lock(&dev->mode_config.mutex);
488 drm_mode_object_put(dev, &connector->base);
489 list_del(&connector->head);
490 mutex_unlock(&dev->mode_config.mutex);
492 EXPORT_SYMBOL(drm_connector_cleanup);
494 void drm_encoder_init(struct drm_device *dev,
495 struct drm_encoder *encoder,
496 const struct drm_encoder_funcs *funcs,
499 mutex_lock(&dev->mode_config.mutex);
503 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
504 encoder->encoder_type = encoder_type;
505 encoder->funcs = funcs;
507 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
508 dev->mode_config.num_encoder++;
510 mutex_unlock(&dev->mode_config.mutex);
512 EXPORT_SYMBOL(drm_encoder_init);
514 void drm_encoder_cleanup(struct drm_encoder *encoder)
516 struct drm_device *dev = encoder->dev;
517 mutex_lock(&dev->mode_config.mutex);
518 drm_mode_object_put(dev, &encoder->base);
519 list_del(&encoder->head);
520 mutex_unlock(&dev->mode_config.mutex);
522 EXPORT_SYMBOL(drm_encoder_cleanup);
525 * drm_mode_create - create a new display mode
529 * Caller must hold DRM mode_config lock.
531 * Create a new drm_display_mode, give it an ID, and return it.
534 * Pointer to new mode on success, NULL on error.
536 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
538 struct drm_display_mode *nmode;
540 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
544 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
547 EXPORT_SYMBOL(drm_mode_create);
550 * drm_mode_destroy - remove a mode
552 * @mode: mode to remove
555 * Caller must hold mode config lock.
557 * Free @mode's unique identifier, then free it.
559 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
561 drm_mode_object_put(dev, &mode->base);
565 EXPORT_SYMBOL(drm_mode_destroy);
567 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
569 struct drm_property *edid;
570 struct drm_property *dpms;
574 * Standard properties (apply to all connectors)
576 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
577 DRM_MODE_PROP_IMMUTABLE,
579 dev->mode_config.edid_property = edid;
581 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
582 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
583 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
584 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
585 drm_dpms_enum_list[i].name);
586 dev->mode_config.dpms_property = dpms;
592 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
595 * Called by a driver the first time a DVI-I connector is made.
597 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
599 struct drm_property *dvi_i_selector;
600 struct drm_property *dvi_i_subconnector;
603 if (dev->mode_config.dvi_i_select_subconnector_property)
607 drm_property_create(dev, DRM_MODE_PROP_ENUM,
608 "select subconnector",
609 ARRAY_SIZE(drm_dvi_i_select_enum_list));
610 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
611 drm_property_add_enum(dvi_i_selector, i,
612 drm_dvi_i_select_enum_list[i].type,
613 drm_dvi_i_select_enum_list[i].name);
614 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
617 drm_property_create(dev, DRM_MODE_PROP_ENUM |
618 DRM_MODE_PROP_IMMUTABLE,
620 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
621 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
622 drm_property_add_enum(dvi_i_subconnector, i,
623 drm_dvi_i_subconnector_enum_list[i].type,
624 drm_dvi_i_subconnector_enum_list[i].name);
625 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
629 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
632 * drm_create_tv_properties - create TV specific connector properties
634 * @num_modes: number of different TV formats (modes) supported
635 * @modes: array of pointers to strings containing name of each format
637 * Called by a driver's TV initialization routine, this function creates
638 * the TV specific connector properties for a given device. Caller is
639 * responsible for allocating a list of format names and passing them to
642 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
645 struct drm_property *tv_selector;
646 struct drm_property *tv_subconnector;
649 if (dev->mode_config.tv_select_subconnector_property)
653 * Basic connector properties
655 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
656 "select subconnector",
657 ARRAY_SIZE(drm_tv_select_enum_list));
658 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
659 drm_property_add_enum(tv_selector, i,
660 drm_tv_select_enum_list[i].type,
661 drm_tv_select_enum_list[i].name);
662 dev->mode_config.tv_select_subconnector_property = tv_selector;
665 drm_property_create(dev, DRM_MODE_PROP_ENUM |
666 DRM_MODE_PROP_IMMUTABLE, "subconnector",
667 ARRAY_SIZE(drm_tv_subconnector_enum_list));
668 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
669 drm_property_add_enum(tv_subconnector, i,
670 drm_tv_subconnector_enum_list[i].type,
671 drm_tv_subconnector_enum_list[i].name);
672 dev->mode_config.tv_subconnector_property = tv_subconnector;
675 * Other, TV specific properties: margins & TV modes.
677 dev->mode_config.tv_left_margin_property =
678 drm_property_create(dev, DRM_MODE_PROP_RANGE,
680 dev->mode_config.tv_left_margin_property->values[0] = 0;
681 dev->mode_config.tv_left_margin_property->values[1] = 100;
683 dev->mode_config.tv_right_margin_property =
684 drm_property_create(dev, DRM_MODE_PROP_RANGE,
686 dev->mode_config.tv_right_margin_property->values[0] = 0;
687 dev->mode_config.tv_right_margin_property->values[1] = 100;
689 dev->mode_config.tv_top_margin_property =
690 drm_property_create(dev, DRM_MODE_PROP_RANGE,
692 dev->mode_config.tv_top_margin_property->values[0] = 0;
693 dev->mode_config.tv_top_margin_property->values[1] = 100;
695 dev->mode_config.tv_bottom_margin_property =
696 drm_property_create(dev, DRM_MODE_PROP_RANGE,
698 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
699 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
701 dev->mode_config.tv_mode_property =
702 drm_property_create(dev, DRM_MODE_PROP_ENUM,
704 for (i = 0; i < num_modes; i++)
705 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
708 dev->mode_config.tv_brightness_property =
709 drm_property_create(dev, DRM_MODE_PROP_RANGE,
711 dev->mode_config.tv_brightness_property->values[0] = 0;
712 dev->mode_config.tv_brightness_property->values[1] = 100;
714 dev->mode_config.tv_contrast_property =
715 drm_property_create(dev, DRM_MODE_PROP_RANGE,
717 dev->mode_config.tv_contrast_property->values[0] = 0;
718 dev->mode_config.tv_contrast_property->values[1] = 100;
720 dev->mode_config.tv_flicker_reduction_property =
721 drm_property_create(dev, DRM_MODE_PROP_RANGE,
722 "flicker reduction", 2);
723 dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
724 dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
726 dev->mode_config.tv_overscan_property =
727 drm_property_create(dev, DRM_MODE_PROP_RANGE,
729 dev->mode_config.tv_overscan_property->values[0] = 0;
730 dev->mode_config.tv_overscan_property->values[1] = 100;
732 dev->mode_config.tv_saturation_property =
733 drm_property_create(dev, DRM_MODE_PROP_RANGE,
735 dev->mode_config.tv_saturation_property->values[0] = 0;
736 dev->mode_config.tv_saturation_property->values[1] = 100;
738 dev->mode_config.tv_hue_property =
739 drm_property_create(dev, DRM_MODE_PROP_RANGE,
741 dev->mode_config.tv_hue_property->values[0] = 0;
742 dev->mode_config.tv_hue_property->values[1] = 100;
746 EXPORT_SYMBOL(drm_mode_create_tv_properties);
749 * drm_mode_create_scaling_mode_property - create scaling mode property
752 * Called by a driver the first time it's needed, must be attached to desired
755 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
757 struct drm_property *scaling_mode;
760 if (dev->mode_config.scaling_mode_property)
764 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
765 ARRAY_SIZE(drm_scaling_mode_enum_list));
766 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
767 drm_property_add_enum(scaling_mode, i,
768 drm_scaling_mode_enum_list[i].type,
769 drm_scaling_mode_enum_list[i].name);
771 dev->mode_config.scaling_mode_property = scaling_mode;
775 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
778 * drm_mode_create_dithering_property - create dithering property
781 * Called by a driver the first time it's needed, must be attached to desired
784 int drm_mode_create_dithering_property(struct drm_device *dev)
786 struct drm_property *dithering_mode;
789 if (dev->mode_config.dithering_mode_property)
793 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
794 ARRAY_SIZE(drm_dithering_mode_enum_list));
795 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
796 drm_property_add_enum(dithering_mode, i,
797 drm_dithering_mode_enum_list[i].type,
798 drm_dithering_mode_enum_list[i].name);
799 dev->mode_config.dithering_mode_property = dithering_mode;
803 EXPORT_SYMBOL(drm_mode_create_dithering_property);
806 * drm_mode_config_init - initialize DRM mode_configuration structure
810 * None, should happen single threaded at init time.
812 * Initialize @dev's mode_config structure, used for tracking the graphics
813 * configuration of @dev.
815 void drm_mode_config_init(struct drm_device *dev)
817 mutex_init(&dev->mode_config.mutex);
818 mutex_init(&dev->mode_config.idr_mutex);
819 INIT_LIST_HEAD(&dev->mode_config.fb_list);
820 INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
821 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
822 INIT_LIST_HEAD(&dev->mode_config.connector_list);
823 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
824 INIT_LIST_HEAD(&dev->mode_config.property_list);
825 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
826 idr_init(&dev->mode_config.crtc_idr);
828 mutex_lock(&dev->mode_config.mutex);
829 drm_mode_create_standard_connector_properties(dev);
830 mutex_unlock(&dev->mode_config.mutex);
832 /* Just to be sure */
833 dev->mode_config.num_fb = 0;
834 dev->mode_config.num_connector = 0;
835 dev->mode_config.num_crtc = 0;
836 dev->mode_config.num_encoder = 0;
838 EXPORT_SYMBOL(drm_mode_config_init);
840 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
842 uint32_t total_objects = 0;
844 total_objects += dev->mode_config.num_crtc;
845 total_objects += dev->mode_config.num_connector;
846 total_objects += dev->mode_config.num_encoder;
848 if (total_objects == 0)
851 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
855 group->num_crtcs = 0;
856 group->num_connectors = 0;
857 group->num_encoders = 0;
861 int drm_mode_group_init_legacy_group(struct drm_device *dev,
862 struct drm_mode_group *group)
864 struct drm_crtc *crtc;
865 struct drm_encoder *encoder;
866 struct drm_connector *connector;
869 if ((ret = drm_mode_group_init(dev, group)))
872 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
873 group->id_list[group->num_crtcs++] = crtc->base.id;
875 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
876 group->id_list[group->num_crtcs + group->num_encoders++] =
879 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
880 group->id_list[group->num_crtcs + group->num_encoders +
881 group->num_connectors++] = connector->base.id;
887 * drm_mode_config_cleanup - free up DRM mode_config info
891 * Caller must hold mode config lock.
893 * Free up all the connectors and CRTCs associated with this DRM device, then
894 * free up the framebuffers and associated buffer objects.
896 * FIXME: cleanup any dangling user buffer objects too
898 void drm_mode_config_cleanup(struct drm_device *dev)
900 struct drm_connector *connector, *ot;
901 struct drm_crtc *crtc, *ct;
902 struct drm_encoder *encoder, *enct;
903 struct drm_framebuffer *fb, *fbt;
904 struct drm_property *property, *pt;
906 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
908 encoder->funcs->destroy(encoder);
911 list_for_each_entry_safe(connector, ot,
912 &dev->mode_config.connector_list, head) {
913 connector->funcs->destroy(connector);
916 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
918 drm_property_destroy(dev, property);
921 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
922 fb->funcs->destroy(fb);
925 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
926 crtc->funcs->destroy(crtc);
930 EXPORT_SYMBOL(drm_mode_config_cleanup);
933 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
934 * @out: drm_mode_modeinfo struct to return to the user
935 * @in: drm_display_mode to use
940 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
943 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
944 struct drm_display_mode *in)
946 out->clock = in->clock;
947 out->hdisplay = in->hdisplay;
948 out->hsync_start = in->hsync_start;
949 out->hsync_end = in->hsync_end;
950 out->htotal = in->htotal;
951 out->hskew = in->hskew;
952 out->vdisplay = in->vdisplay;
953 out->vsync_start = in->vsync_start;
954 out->vsync_end = in->vsync_end;
955 out->vtotal = in->vtotal;
956 out->vscan = in->vscan;
957 out->vrefresh = in->vrefresh;
958 out->flags = in->flags;
959 out->type = in->type;
960 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
961 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
965 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
966 * @out: drm_display_mode to return to the user
967 * @in: drm_mode_modeinfo to use
972 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
975 void drm_crtc_convert_umode(struct drm_display_mode *out,
976 struct drm_mode_modeinfo *in)
978 out->clock = in->clock;
979 out->hdisplay = in->hdisplay;
980 out->hsync_start = in->hsync_start;
981 out->hsync_end = in->hsync_end;
982 out->htotal = in->htotal;
983 out->hskew = in->hskew;
984 out->vdisplay = in->vdisplay;
985 out->vsync_start = in->vsync_start;
986 out->vsync_end = in->vsync_end;
987 out->vtotal = in->vtotal;
988 out->vscan = in->vscan;
989 out->vrefresh = in->vrefresh;
990 out->flags = in->flags;
991 out->type = in->type;
992 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
993 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
997 * drm_mode_getresources - get graphics configuration
998 * @inode: inode from the ioctl
999 * @filp: file * from the ioctl
1000 * @cmd: cmd from ioctl
1001 * @arg: arg from ioctl
1004 * Takes mode config lock.
1006 * Construct a set of configuration description structures and return
1007 * them to the user, including CRTC, connector and framebuffer configuration.
1009 * Called by the user via ioctl.
1012 * Zero on success, errno on failure.
1014 int drm_mode_getresources(struct drm_device *dev, void *data,
1015 struct drm_file *file_priv)
1017 struct drm_mode_card_res *card_res = data;
1018 struct list_head *lh;
1019 struct drm_framebuffer *fb;
1020 struct drm_connector *connector;
1021 struct drm_crtc *crtc;
1022 struct drm_encoder *encoder;
1024 int connector_count = 0;
1027 int encoder_count = 0;
1029 uint32_t __user *fb_id;
1030 uint32_t __user *crtc_id;
1031 uint32_t __user *connector_id;
1032 uint32_t __user *encoder_id;
1033 struct drm_mode_group *mode_group;
1035 mutex_lock(&dev->mode_config.mutex);
1038 * For the non-control nodes we need to limit the list of resources
1039 * by IDs in the group list for this node
1041 list_for_each(lh, &file_priv->fbs)
1044 mode_group = &file_priv->master->minor->mode_group;
1045 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1047 list_for_each(lh, &dev->mode_config.crtc_list)
1050 list_for_each(lh, &dev->mode_config.connector_list)
1053 list_for_each(lh, &dev->mode_config.encoder_list)
1057 crtc_count = mode_group->num_crtcs;
1058 connector_count = mode_group->num_connectors;
1059 encoder_count = mode_group->num_encoders;
1062 card_res->max_height = dev->mode_config.max_height;
1063 card_res->min_height = dev->mode_config.min_height;
1064 card_res->max_width = dev->mode_config.max_width;
1065 card_res->min_width = dev->mode_config.min_width;
1067 /* handle this in 4 parts */
1069 if (card_res->count_fbs >= fb_count) {
1071 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1072 list_for_each_entry(fb, &file_priv->fbs, head) {
1073 if (put_user(fb->base.id, fb_id + copied)) {
1080 card_res->count_fbs = fb_count;
1083 if (card_res->count_crtcs >= crtc_count) {
1085 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1086 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1087 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1089 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1090 if (put_user(crtc->base.id, crtc_id + copied)) {
1097 for (i = 0; i < mode_group->num_crtcs; i++) {
1098 if (put_user(mode_group->id_list[i],
1099 crtc_id + copied)) {
1107 card_res->count_crtcs = crtc_count;
1110 if (card_res->count_encoders >= encoder_count) {
1112 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1113 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1114 list_for_each_entry(encoder,
1115 &dev->mode_config.encoder_list,
1117 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1119 if (put_user(encoder->base.id, encoder_id +
1127 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1128 if (put_user(mode_group->id_list[i],
1129 encoder_id + copied)) {
1138 card_res->count_encoders = encoder_count;
1141 if (card_res->count_connectors >= connector_count) {
1143 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1144 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1145 list_for_each_entry(connector,
1146 &dev->mode_config.connector_list,
1148 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1149 connector->base.id);
1150 if (put_user(connector->base.id,
1151 connector_id + copied)) {
1158 int start = mode_group->num_crtcs +
1159 mode_group->num_encoders;
1160 for (i = start; i < start + mode_group->num_connectors; i++) {
1161 if (put_user(mode_group->id_list[i],
1162 connector_id + copied)) {
1170 card_res->count_connectors = connector_count;
1172 DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1173 card_res->count_connectors, card_res->count_encoders);
1176 mutex_unlock(&dev->mode_config.mutex);
1181 * drm_mode_getcrtc - get CRTC configuration
1182 * @inode: inode from the ioctl
1183 * @filp: file * from the ioctl
1184 * @cmd: cmd from ioctl
1185 * @arg: arg from ioctl
1190 * Construct a CRTC configuration structure to return to the user.
1192 * Called by the user via ioctl.
1195 * Zero on success, errno on failure.
1197 int drm_mode_getcrtc(struct drm_device *dev,
1198 void *data, struct drm_file *file_priv)
1200 struct drm_mode_crtc *crtc_resp = data;
1201 struct drm_crtc *crtc;
1202 struct drm_mode_object *obj;
1205 mutex_lock(&dev->mode_config.mutex);
1207 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1208 DRM_MODE_OBJECT_CRTC);
1213 crtc = obj_to_crtc(obj);
1215 crtc_resp->x = crtc->x;
1216 crtc_resp->y = crtc->y;
1217 crtc_resp->gamma_size = crtc->gamma_size;
1219 crtc_resp->fb_id = crtc->fb->base.id;
1221 crtc_resp->fb_id = 0;
1223 if (crtc->enabled) {
1225 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1226 crtc_resp->mode_valid = 1;
1229 crtc_resp->mode_valid = 0;
1233 mutex_unlock(&dev->mode_config.mutex);
1238 * drm_mode_getconnector - get connector configuration
1239 * @inode: inode from the ioctl
1240 * @filp: file * from the ioctl
1241 * @cmd: cmd from ioctl
1242 * @arg: arg from ioctl
1247 * Construct a connector configuration structure to return to the user.
1249 * Called by the user via ioctl.
1252 * Zero on success, errno on failure.
1254 int drm_mode_getconnector(struct drm_device *dev, void *data,
1255 struct drm_file *file_priv)
1257 struct drm_mode_get_connector *out_resp = data;
1258 struct drm_mode_object *obj;
1259 struct drm_connector *connector;
1260 struct drm_display_mode *mode;
1262 int props_count = 0;
1263 int encoders_count = 0;
1267 struct drm_mode_modeinfo u_mode;
1268 struct drm_mode_modeinfo __user *mode_ptr;
1269 uint32_t __user *prop_ptr;
1270 uint64_t __user *prop_values;
1271 uint32_t __user *encoder_ptr;
1273 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1275 DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1277 mutex_lock(&dev->mode_config.mutex);
1279 obj = drm_mode_object_find(dev, out_resp->connector_id,
1280 DRM_MODE_OBJECT_CONNECTOR);
1285 connector = obj_to_connector(obj);
1287 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1288 if (connector->property_ids[i] != 0) {
1293 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1294 if (connector->encoder_ids[i] != 0) {
1299 if (out_resp->count_modes == 0) {
1300 connector->funcs->fill_modes(connector,
1301 dev->mode_config.max_width,
1302 dev->mode_config.max_height);
1305 /* delayed so we get modes regardless of pre-fill_modes state */
1306 list_for_each_entry(mode, &connector->modes, head)
1309 out_resp->connector_id = connector->base.id;
1310 out_resp->connector_type = connector->connector_type;
1311 out_resp->connector_type_id = connector->connector_type_id;
1312 out_resp->mm_width = connector->display_info.width_mm;
1313 out_resp->mm_height = connector->display_info.height_mm;
1314 out_resp->subpixel = connector->display_info.subpixel_order;
1315 out_resp->connection = connector->status;
1316 if (connector->encoder)
1317 out_resp->encoder_id = connector->encoder->base.id;
1319 out_resp->encoder_id = 0;
1322 * This ioctl is called twice, once to determine how much space is
1323 * needed, and the 2nd time to fill it.
1325 if ((out_resp->count_modes >= mode_count) && mode_count) {
1327 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1328 list_for_each_entry(mode, &connector->modes, head) {
1329 drm_crtc_convert_to_umode(&u_mode, mode);
1330 if (copy_to_user(mode_ptr + copied,
1331 &u_mode, sizeof(u_mode))) {
1338 out_resp->count_modes = mode_count;
1340 if ((out_resp->count_props >= props_count) && props_count) {
1342 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1343 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1344 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1345 if (connector->property_ids[i] != 0) {
1346 if (put_user(connector->property_ids[i],
1347 prop_ptr + copied)) {
1352 if (put_user(connector->property_values[i],
1353 prop_values + copied)) {
1361 out_resp->count_props = props_count;
1363 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1365 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1366 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1367 if (connector->encoder_ids[i] != 0) {
1368 if (put_user(connector->encoder_ids[i],
1369 encoder_ptr + copied)) {
1377 out_resp->count_encoders = encoders_count;
1380 mutex_unlock(&dev->mode_config.mutex);
1384 int drm_mode_getencoder(struct drm_device *dev, void *data,
1385 struct drm_file *file_priv)
1387 struct drm_mode_get_encoder *enc_resp = data;
1388 struct drm_mode_object *obj;
1389 struct drm_encoder *encoder;
1392 mutex_lock(&dev->mode_config.mutex);
1393 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1394 DRM_MODE_OBJECT_ENCODER);
1399 encoder = obj_to_encoder(obj);
1402 enc_resp->crtc_id = encoder->crtc->base.id;
1404 enc_resp->crtc_id = 0;
1405 enc_resp->encoder_type = encoder->encoder_type;
1406 enc_resp->encoder_id = encoder->base.id;
1407 enc_resp->possible_crtcs = encoder->possible_crtcs;
1408 enc_resp->possible_clones = encoder->possible_clones;
1411 mutex_unlock(&dev->mode_config.mutex);
1416 * drm_mode_setcrtc - set CRTC configuration
1417 * @inode: inode from the ioctl
1418 * @filp: file * from the ioctl
1419 * @cmd: cmd from ioctl
1420 * @arg: arg from ioctl
1425 * Build a new CRTC configuration based on user request.
1427 * Called by the user via ioctl.
1430 * Zero on success, errno on failure.
1432 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1433 struct drm_file *file_priv)
1435 struct drm_mode_config *config = &dev->mode_config;
1436 struct drm_mode_crtc *crtc_req = data;
1437 struct drm_mode_object *obj;
1438 struct drm_crtc *crtc, *crtcfb;
1439 struct drm_connector **connector_set = NULL, *connector;
1440 struct drm_framebuffer *fb = NULL;
1441 struct drm_display_mode *mode = NULL;
1442 struct drm_mode_set set;
1443 uint32_t __user *set_connectors_ptr;
1447 mutex_lock(&dev->mode_config.mutex);
1448 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1449 DRM_MODE_OBJECT_CRTC);
1451 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1455 crtc = obj_to_crtc(obj);
1457 if (crtc_req->mode_valid) {
1458 /* If we have a mode we need a framebuffer. */
1459 /* If we pass -1, set the mode with the currently bound fb */
1460 if (crtc_req->fb_id == -1) {
1461 list_for_each_entry(crtcfb,
1462 &dev->mode_config.crtc_list, head) {
1463 if (crtcfb == crtc) {
1464 DRM_DEBUG_KMS("Using current fb for "
1470 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1471 DRM_MODE_OBJECT_FB);
1473 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1478 fb = obj_to_fb(obj);
1481 mode = drm_mode_create(dev);
1482 drm_crtc_convert_umode(mode, &crtc_req->mode);
1483 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1486 if (crtc_req->count_connectors == 0 && mode) {
1487 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1492 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1493 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1494 crtc_req->count_connectors);
1499 if (crtc_req->count_connectors > 0) {
1502 /* Avoid unbounded kernel memory allocation */
1503 if (crtc_req->count_connectors > config->num_connector) {
1508 connector_set = kmalloc(crtc_req->count_connectors *
1509 sizeof(struct drm_connector *),
1511 if (!connector_set) {
1516 for (i = 0; i < crtc_req->count_connectors; i++) {
1517 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1518 if (get_user(out_id, &set_connectors_ptr[i])) {
1523 obj = drm_mode_object_find(dev, out_id,
1524 DRM_MODE_OBJECT_CONNECTOR);
1526 DRM_DEBUG_KMS("Connector id %d unknown\n",
1531 connector = obj_to_connector(obj);
1533 connector_set[i] = connector;
1538 set.x = crtc_req->x;
1539 set.y = crtc_req->y;
1541 set.connectors = connector_set;
1542 set.num_connectors = crtc_req->count_connectors;
1544 ret = crtc->funcs->set_config(&set);
1547 kfree(connector_set);
1548 mutex_unlock(&dev->mode_config.mutex);
1552 int drm_mode_cursor_ioctl(struct drm_device *dev,
1553 void *data, struct drm_file *file_priv)
1555 struct drm_mode_cursor *req = data;
1556 struct drm_mode_object *obj;
1557 struct drm_crtc *crtc;
1561 DRM_ERROR("no operation set\n");
1565 mutex_lock(&dev->mode_config.mutex);
1566 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1568 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1572 crtc = obj_to_crtc(obj);
1574 if (req->flags & DRM_MODE_CURSOR_BO) {
1575 if (!crtc->funcs->cursor_set) {
1576 DRM_ERROR("crtc does not support cursor\n");
1580 /* Turns off the cursor if handle is 0 */
1581 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1582 req->width, req->height);
1585 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1586 if (crtc->funcs->cursor_move) {
1587 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1589 DRM_ERROR("crtc does not support cursor\n");
1595 mutex_unlock(&dev->mode_config.mutex);
1600 * drm_mode_addfb - add an FB to the graphics configuration
1601 * @inode: inode from the ioctl
1602 * @filp: file * from the ioctl
1603 * @cmd: cmd from ioctl
1604 * @arg: arg from ioctl
1607 * Takes mode config lock.
1609 * Add a new FB to the specified CRTC, given a user request.
1611 * Called by the user via ioctl.
1614 * Zero on success, errno on failure.
1616 int drm_mode_addfb(struct drm_device *dev,
1617 void *data, struct drm_file *file_priv)
1619 struct drm_mode_fb_cmd *r = data;
1620 struct drm_mode_config *config = &dev->mode_config;
1621 struct drm_framebuffer *fb;
1624 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1625 DRM_ERROR("mode new framebuffer width not within limits\n");
1628 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1629 DRM_ERROR("mode new framebuffer height not within limits\n");
1633 mutex_lock(&dev->mode_config.mutex);
1635 /* TODO check buffer is sufficently large */
1636 /* TODO setup destructor callback */
1638 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1640 DRM_ERROR("could not create framebuffer\n");
1645 r->fb_id = fb->base.id;
1646 list_add(&fb->filp_head, &file_priv->fbs);
1649 mutex_unlock(&dev->mode_config.mutex);
1654 * drm_mode_rmfb - remove an FB from the configuration
1655 * @inode: inode from the ioctl
1656 * @filp: file * from the ioctl
1657 * @cmd: cmd from ioctl
1658 * @arg: arg from ioctl
1661 * Takes mode config lock.
1663 * Remove the FB specified by the user.
1665 * Called by the user via ioctl.
1668 * Zero on success, errno on failure.
1670 int drm_mode_rmfb(struct drm_device *dev,
1671 void *data, struct drm_file *file_priv)
1673 struct drm_mode_object *obj;
1674 struct drm_framebuffer *fb = NULL;
1675 struct drm_framebuffer *fbl = NULL;
1676 uint32_t *id = data;
1680 mutex_lock(&dev->mode_config.mutex);
1681 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1682 /* TODO check that we realy get a framebuffer back. */
1684 DRM_ERROR("mode invalid framebuffer id\n");
1688 fb = obj_to_fb(obj);
1690 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1695 DRM_ERROR("tried to remove a fb that we didn't own\n");
1700 /* TODO release all crtc connected to the framebuffer */
1701 /* TODO unhock the destructor from the buffer object */
1703 list_del(&fb->filp_head);
1704 fb->funcs->destroy(fb);
1707 mutex_unlock(&dev->mode_config.mutex);
1712 * drm_mode_getfb - get FB info
1713 * @inode: inode from the ioctl
1714 * @filp: file * from the ioctl
1715 * @cmd: cmd from ioctl
1716 * @arg: arg from ioctl
1721 * Lookup the FB given its ID and return info about it.
1723 * Called by the user via ioctl.
1726 * Zero on success, errno on failure.
1728 int drm_mode_getfb(struct drm_device *dev,
1729 void *data, struct drm_file *file_priv)
1731 struct drm_mode_fb_cmd *r = data;
1732 struct drm_mode_object *obj;
1733 struct drm_framebuffer *fb;
1736 mutex_lock(&dev->mode_config.mutex);
1737 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1739 DRM_ERROR("invalid framebuffer id\n");
1743 fb = obj_to_fb(obj);
1745 r->height = fb->height;
1746 r->width = fb->width;
1747 r->depth = fb->depth;
1748 r->bpp = fb->bits_per_pixel;
1749 r->pitch = fb->pitch;
1750 fb->funcs->create_handle(fb, file_priv, &r->handle);
1753 mutex_unlock(&dev->mode_config.mutex);
1758 * drm_fb_release - remove and free the FBs on this file
1759 * @filp: file * from the ioctl
1762 * Takes mode config lock.
1764 * Destroy all the FBs associated with @filp.
1766 * Called by the user via ioctl.
1769 * Zero on success, errno on failure.
1771 void drm_fb_release(struct drm_file *priv)
1773 struct drm_device *dev = priv->minor->dev;
1774 struct drm_framebuffer *fb, *tfb;
1776 mutex_lock(&dev->mode_config.mutex);
1777 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1778 list_del(&fb->filp_head);
1779 fb->funcs->destroy(fb);
1781 mutex_unlock(&dev->mode_config.mutex);
1785 * drm_mode_attachmode - add a mode to the user mode list
1787 * @connector: connector to add the mode to
1788 * @mode: mode to add
1790 * Add @mode to @connector's user mode list.
1792 static int drm_mode_attachmode(struct drm_device *dev,
1793 struct drm_connector *connector,
1794 struct drm_display_mode *mode)
1798 list_add_tail(&mode->head, &connector->user_modes);
1802 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1803 struct drm_display_mode *mode)
1805 struct drm_connector *connector;
1807 struct drm_display_mode *dup_mode;
1809 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1810 if (!connector->encoder)
1812 if (connector->encoder->crtc == crtc) {
1814 dup_mode = drm_mode_duplicate(dev, mode);
1817 ret = drm_mode_attachmode(dev, connector, dup_mode);
1825 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1827 static int drm_mode_detachmode(struct drm_device *dev,
1828 struct drm_connector *connector,
1829 struct drm_display_mode *mode)
1833 struct drm_display_mode *match_mode, *t;
1835 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1836 if (drm_mode_equal(match_mode, mode)) {
1837 list_del(&match_mode->head);
1838 drm_mode_destroy(dev, match_mode);
1850 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1852 struct drm_connector *connector;
1854 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1855 drm_mode_detachmode(dev, connector, mode);
1859 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1862 * drm_fb_attachmode - Attach a user mode to an connector
1863 * @inode: inode from the ioctl
1864 * @filp: file * from the ioctl
1865 * @cmd: cmd from ioctl
1866 * @arg: arg from ioctl
1868 * This attaches a user specified mode to an connector.
1869 * Called by the user via ioctl.
1872 * Zero on success, errno on failure.
1874 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1875 void *data, struct drm_file *file_priv)
1877 struct drm_mode_mode_cmd *mode_cmd = data;
1878 struct drm_connector *connector;
1879 struct drm_display_mode *mode;
1880 struct drm_mode_object *obj;
1881 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1884 mutex_lock(&dev->mode_config.mutex);
1886 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1891 connector = obj_to_connector(obj);
1893 mode = drm_mode_create(dev);
1899 drm_crtc_convert_umode(mode, umode);
1901 ret = drm_mode_attachmode(dev, connector, mode);
1903 mutex_unlock(&dev->mode_config.mutex);
1909 * drm_fb_detachmode - Detach a user specified mode from an connector
1910 * @inode: inode from the ioctl
1911 * @filp: file * from the ioctl
1912 * @cmd: cmd from ioctl
1913 * @arg: arg from ioctl
1915 * Called by the user via ioctl.
1918 * Zero on success, errno on failure.
1920 int drm_mode_detachmode_ioctl(struct drm_device *dev,
1921 void *data, struct drm_file *file_priv)
1923 struct drm_mode_object *obj;
1924 struct drm_mode_mode_cmd *mode_cmd = data;
1925 struct drm_connector *connector;
1926 struct drm_display_mode mode;
1927 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1930 mutex_lock(&dev->mode_config.mutex);
1932 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1937 connector = obj_to_connector(obj);
1939 drm_crtc_convert_umode(&mode, umode);
1940 ret = drm_mode_detachmode(dev, connector, &mode);
1942 mutex_unlock(&dev->mode_config.mutex);
1946 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1947 const char *name, int num_values)
1949 struct drm_property *property = NULL;
1951 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
1956 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
1957 if (!property->values)
1961 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
1962 property->flags = flags;
1963 property->num_values = num_values;
1964 INIT_LIST_HEAD(&property->enum_blob_list);
1967 strncpy(property->name, name, DRM_PROP_NAME_LEN);
1969 list_add_tail(&property->head, &dev->mode_config.property_list);
1975 EXPORT_SYMBOL(drm_property_create);
1977 int drm_property_add_enum(struct drm_property *property, int index,
1978 uint64_t value, const char *name)
1980 struct drm_property_enum *prop_enum;
1982 if (!(property->flags & DRM_MODE_PROP_ENUM))
1985 if (!list_empty(&property->enum_blob_list)) {
1986 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
1987 if (prop_enum->value == value) {
1988 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1989 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1995 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
1999 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2000 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2001 prop_enum->value = value;
2003 property->values[index] = value;
2004 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2007 EXPORT_SYMBOL(drm_property_add_enum);
2009 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2011 struct drm_property_enum *prop_enum, *pt;
2013 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2014 list_del(&prop_enum->head);
2018 if (property->num_values)
2019 kfree(property->values);
2020 drm_mode_object_put(dev, &property->base);
2021 list_del(&property->head);
2024 EXPORT_SYMBOL(drm_property_destroy);
2026 int drm_connector_attach_property(struct drm_connector *connector,
2027 struct drm_property *property, uint64_t init_val)
2031 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2032 if (connector->property_ids[i] == 0) {
2033 connector->property_ids[i] = property->base.id;
2034 connector->property_values[i] = init_val;
2039 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2043 EXPORT_SYMBOL(drm_connector_attach_property);
2045 int drm_connector_property_set_value(struct drm_connector *connector,
2046 struct drm_property *property, uint64_t value)
2050 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2051 if (connector->property_ids[i] == property->base.id) {
2052 connector->property_values[i] = value;
2057 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2061 EXPORT_SYMBOL(drm_connector_property_set_value);
2063 int drm_connector_property_get_value(struct drm_connector *connector,
2064 struct drm_property *property, uint64_t *val)
2068 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2069 if (connector->property_ids[i] == property->base.id) {
2070 *val = connector->property_values[i];
2075 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2079 EXPORT_SYMBOL(drm_connector_property_get_value);
2081 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2082 void *data, struct drm_file *file_priv)
2084 struct drm_mode_object *obj;
2085 struct drm_mode_get_property *out_resp = data;
2086 struct drm_property *property;
2089 int value_count = 0;
2092 struct drm_property_enum *prop_enum;
2093 struct drm_mode_property_enum __user *enum_ptr;
2094 struct drm_property_blob *prop_blob;
2095 uint32_t *blob_id_ptr;
2096 uint64_t __user *values_ptr;
2097 uint32_t __user *blob_length_ptr;
2099 mutex_lock(&dev->mode_config.mutex);
2100 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2105 property = obj_to_property(obj);
2107 if (property->flags & DRM_MODE_PROP_ENUM) {
2108 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2110 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2111 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2115 value_count = property->num_values;
2117 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2118 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2119 out_resp->flags = property->flags;
2121 if ((out_resp->count_values >= value_count) && value_count) {
2122 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2123 for (i = 0; i < value_count; i++) {
2124 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2130 out_resp->count_values = value_count;
2132 if (property->flags & DRM_MODE_PROP_ENUM) {
2133 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2135 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2136 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2138 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2143 if (copy_to_user(&enum_ptr[copied].name,
2144 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2151 out_resp->count_enum_blobs = enum_count;
2154 if (property->flags & DRM_MODE_PROP_BLOB) {
2155 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2157 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2158 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2160 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2161 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2166 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2174 out_resp->count_enum_blobs = blob_count;
2177 mutex_unlock(&dev->mode_config.mutex);
2181 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2184 struct drm_property_blob *blob;
2186 if (!length || !data)
2189 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2193 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2194 blob->length = length;
2196 memcpy(blob->data, data, length);
2198 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2200 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2204 static void drm_property_destroy_blob(struct drm_device *dev,
2205 struct drm_property_blob *blob)
2207 drm_mode_object_put(dev, &blob->base);
2208 list_del(&blob->head);
2212 int drm_mode_getblob_ioctl(struct drm_device *dev,
2213 void *data, struct drm_file *file_priv)
2215 struct drm_mode_object *obj;
2216 struct drm_mode_get_blob *out_resp = data;
2217 struct drm_property_blob *blob;
2221 mutex_lock(&dev->mode_config.mutex);
2222 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2227 blob = obj_to_blob(obj);
2229 if (out_resp->length == blob->length) {
2230 blob_ptr = (void *)(unsigned long)out_resp->data;
2231 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2236 out_resp->length = blob->length;
2239 mutex_unlock(&dev->mode_config.mutex);
2243 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2246 struct drm_device *dev = connector->dev;
2249 if (connector->edid_blob_ptr)
2250 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2252 /* Delete edid, when there is none. */
2254 connector->edid_blob_ptr = NULL;
2255 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2259 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
2261 ret = drm_connector_property_set_value(connector,
2262 dev->mode_config.edid_property,
2263 connector->edid_blob_ptr->base.id);
2267 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2269 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2270 void *data, struct drm_file *file_priv)
2272 struct drm_mode_connector_set_property *out_resp = data;
2273 struct drm_mode_object *obj;
2274 struct drm_property *property;
2275 struct drm_connector *connector;
2279 mutex_lock(&dev->mode_config.mutex);
2281 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2285 connector = obj_to_connector(obj);
2287 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2288 if (connector->property_ids[i] == out_resp->prop_id)
2292 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2296 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2300 property = obj_to_property(obj);
2302 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2305 if (property->flags & DRM_MODE_PROP_RANGE) {
2306 if (out_resp->value < property->values[0])
2309 if (out_resp->value > property->values[1])
2313 for (i = 0; i < property->num_values; i++) {
2314 if (property->values[i] == out_resp->value) {
2324 /* Do DPMS ourselves */
2325 if (property == connector->dev->mode_config.dpms_property) {
2326 if (connector->funcs->dpms)
2327 (*connector->funcs->dpms)(connector, (int) out_resp->value);
2329 } else if (connector->funcs->set_property)
2330 ret = connector->funcs->set_property(connector, property, out_resp->value);
2332 /* store the property value if succesful */
2334 drm_connector_property_set_value(connector, property, out_resp->value);
2336 mutex_unlock(&dev->mode_config.mutex);
2340 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2341 struct drm_encoder *encoder)
2345 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2346 if (connector->encoder_ids[i] == 0) {
2347 connector->encoder_ids[i] = encoder->base.id;
2353 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2355 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2356 struct drm_encoder *encoder)
2359 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2360 if (connector->encoder_ids[i] == encoder->base.id) {
2361 connector->encoder_ids[i] = 0;
2362 if (connector->encoder == encoder)
2363 connector->encoder = NULL;
2368 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2370 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2373 crtc->gamma_size = gamma_size;
2375 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2376 if (!crtc->gamma_store) {
2377 crtc->gamma_size = 0;
2383 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2385 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2386 void *data, struct drm_file *file_priv)
2388 struct drm_mode_crtc_lut *crtc_lut = data;
2389 struct drm_mode_object *obj;
2390 struct drm_crtc *crtc;
2391 void *r_base, *g_base, *b_base;
2395 mutex_lock(&dev->mode_config.mutex);
2396 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2401 crtc = obj_to_crtc(obj);
2403 /* memcpy into gamma store */
2404 if (crtc_lut->gamma_size != crtc->gamma_size) {
2409 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2410 r_base = crtc->gamma_store;
2411 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2416 g_base = r_base + size;
2417 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2422 b_base = g_base + size;
2423 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2428 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
2431 mutex_unlock(&dev->mode_config.mutex);
2436 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2437 void *data, struct drm_file *file_priv)
2439 struct drm_mode_crtc_lut *crtc_lut = data;
2440 struct drm_mode_object *obj;
2441 struct drm_crtc *crtc;
2442 void *r_base, *g_base, *b_base;
2446 mutex_lock(&dev->mode_config.mutex);
2447 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2452 crtc = obj_to_crtc(obj);
2454 /* memcpy into gamma store */
2455 if (crtc_lut->gamma_size != crtc->gamma_size) {
2460 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2461 r_base = crtc->gamma_store;
2462 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2467 g_base = r_base + size;
2468 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2473 b_base = g_base + size;
2474 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2479 mutex_unlock(&dev->mode_config.mutex);
2483 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2484 void *data, struct drm_file *file_priv)
2486 struct drm_mode_crtc_page_flip *page_flip = data;
2487 struct drm_mode_object *obj;
2488 struct drm_crtc *crtc;
2489 struct drm_framebuffer *fb;
2490 struct drm_pending_vblank_event *e = NULL;
2491 unsigned long flags;
2494 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2495 page_flip->reserved != 0)
2498 mutex_lock(&dev->mode_config.mutex);
2499 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2502 crtc = obj_to_crtc(obj);
2504 if (crtc->funcs->page_flip == NULL)
2507 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2510 fb = obj_to_fb(obj);
2512 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2514 spin_lock_irqsave(&dev->event_lock, flags);
2515 if (file_priv->event_space < sizeof e->event) {
2516 spin_unlock_irqrestore(&dev->event_lock, flags);
2519 file_priv->event_space -= sizeof e->event;
2520 spin_unlock_irqrestore(&dev->event_lock, flags);
2522 e = kzalloc(sizeof *e, GFP_KERNEL);
2524 spin_lock_irqsave(&dev->event_lock, flags);
2525 file_priv->event_space += sizeof e->event;
2526 spin_unlock_irqrestore(&dev->event_lock, flags);
2530 e->event.base.type = DRM_EVENT_VBLANK;
2531 e->event.base.length = sizeof e->event;
2532 e->event.user_data = page_flip->user_data;
2533 e->base.event = &e->event.base;
2534 e->base.file_priv = file_priv;
2536 (void (*) (struct drm_pending_event *)) kfree;
2539 ret = crtc->funcs->page_flip(crtc, fb, e);
2541 spin_lock_irqsave(&dev->event_lock, flags);
2542 file_priv->event_space += sizeof e->event;
2543 spin_unlock_irqrestore(&dev->event_lock, flags);
2548 mutex_unlock(&dev->mode_config.mutex);