2 * Copyright (c) 2006-2007 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
5 * DRM core CRTC related functions
7 * Permission to use, copy, modify, distribute, and sell this software and its
8 * documentation for any purpose is hereby granted without fee, provided that
9 * the above copyright notice appear in all copies and that both that copyright
10 * notice and this permission notice appear in supporting documentation, and
11 * that the name of the copyright holders not be used in advertising or
12 * publicity pertaining to distribution of the software without specific,
13 * written prior permission. The copyright holders make no representations
14 * about the suitability of this software for any purpose. It is provided "as
15 * is" without express or implied warranty.
17 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
19 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
20 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
22 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
27 * Eric Anholt <eric@anholt.net>
28 * Dave Airlie <airlied@linux.ie>
29 * Jesse Barnes <jesse.barnes@intel.com>
31 #include <linux/list.h>
37 * drm_idr_get - allocate a new identifier
39 * @ptr: object pointer, used to generate unique ID
42 * Caller must hold DRM mode_config lock.
44 * Create a unique identifier based on @ptr in @dev's identifier space. Used
45 * for tracking modes, CRTCs and outputs.
48 * New unique (relative to other objects in @dev) integer identifier for the
51 int drm_idr_get(struct drm_device *dev, void *ptr)
56 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
57 DRM_ERROR("Ran out memory getting a mode number\n");
61 ret = idr_get_new_above(&dev->mode_config.crtc_idr, ptr, 1, &new_id);
69 * drm_idr_put - free an identifer
74 * Caller must hold DRM mode_config lock.
76 * Free @id from @dev's unique identifier pool.
78 void drm_idr_put(struct drm_device *dev, int id)
80 idr_remove(&dev->mode_config.crtc_idr, id);
84 * drm_crtc_from_fb - find the CRTC structure associated with an fb
86 * @fb: framebuffer in question
89 * Caller must hold mode_config lock.
91 * Find CRTC in the mode_config structure that matches @fb.
94 * Pointer to the CRTC or NULL if it wasn't found.
96 struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev,
97 struct drm_framebuffer *fb)
99 struct drm_crtc *crtc;
101 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
109 * drm_framebuffer_create - create a new framebuffer object
113 * Caller must hold mode config lock.
115 * Creates a new framebuffer objects and adds it to @dev's DRM mode_config.
118 * Pointer to new framebuffer or NULL on error.
120 struct drm_framebuffer *drm_framebuffer_create(struct drm_device *dev)
122 struct drm_framebuffer *fb;
124 /* Limit to single framebuffer for now */
125 if (dev->mode_config.num_fb > 1) {
126 mutex_unlock(&dev->mode_config.mutex);
127 DRM_ERROR("Attempt to add multiple framebuffers failed\n");
131 fb = kzalloc(sizeof(struct drm_framebuffer), GFP_KERNEL);
135 fb->id = drm_idr_get(dev, fb);
137 dev->mode_config.num_fb++;
138 list_add(&fb->head, &dev->mode_config.fb_list);
142 EXPORT_SYMBOL(drm_framebuffer_create);
145 * drm_framebuffer_destroy - remove a framebuffer object
146 * @fb: framebuffer to remove
149 * Caller must hold mode config lock.
151 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
152 * it, setting it to NULL.
154 void drm_framebuffer_destroy(struct drm_framebuffer *fb)
156 struct drm_device *dev = fb->dev;
157 struct drm_crtc *crtc;
159 /* remove from any CRTC */
160 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
165 drm_idr_put(dev, fb->id);
167 dev->mode_config.num_fb--;
171 EXPORT_SYMBOL(drm_framebuffer_destroy);
174 * drm_crtc_create - create a new CRTC object
176 * @funcs: callbacks for the new CRTC
179 * Caller must hold mode config lock.
181 * Creates a new CRTC object and adds it to @dev's mode_config structure.
184 * Pointer to new CRTC object or NULL on error.
186 struct drm_crtc *drm_crtc_create(struct drm_device *dev,
187 const struct drm_crtc_funcs *funcs)
189 struct drm_crtc *crtc;
191 crtc = kzalloc(sizeof(struct drm_crtc), GFP_KERNEL);
198 crtc->id = drm_idr_get(dev, crtc);
200 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
201 dev->mode_config.num_crtc++;
205 EXPORT_SYMBOL(drm_crtc_create);
208 * drm_crtc_destroy - remove a CRTC object
209 * @crtc: CRTC to remove
212 * Caller must hold mode config lock.
214 * Cleanup @crtc. Calls @crtc's cleanup function, then removes @crtc from
215 * its associated DRM device's mode_config. Frees it afterwards.
217 void drm_crtc_destroy(struct drm_crtc *crtc)
219 struct drm_device *dev = crtc->dev;
221 if (crtc->funcs->cleanup)
222 (*crtc->funcs->cleanup)(crtc);
224 drm_idr_put(dev, crtc->id);
225 list_del(&crtc->head);
226 dev->mode_config.num_crtc--;
229 EXPORT_SYMBOL(drm_crtc_destroy);
232 * drm_crtc_in_use - check if a given CRTC is in a mode_config
233 * @crtc: CRTC to check
236 * Caller must hold mode config lock.
238 * Walk @crtc's DRM device's mode_config and see if it's in use.
241 * True if @crtc is part of the mode_config, false otherwise.
243 bool drm_crtc_in_use(struct drm_crtc *crtc)
245 struct drm_output *output;
246 struct drm_device *dev = crtc->dev;
247 /* FIXME: Locking around list access? */
248 list_for_each_entry(output, &dev->mode_config.output_list, head)
249 if (output->crtc == crtc)
253 EXPORT_SYMBOL(drm_crtc_in_use);
256 * Detailed mode info for a standard 640x480@60Hz monitor
258 static struct drm_display_mode std_mode[] = {
259 { DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 25200, 640, 656,
260 752, 800, 0, 480, 490, 492, 525, 0,
261 V_NHSYNC | V_NVSYNC) }, /* 640x480@60Hz */
265 * drm_crtc_probe_output_modes - get complete set of display modes
267 * @maxX: max width for modes
268 * @maxY: max height for modes
271 * Caller must hold mode config lock.
273 * Based on @dev's mode_config layout, scan all the outputs and try to detect
274 * modes on them. Modes will first be added to the output's probed_modes
275 * list, then culled (based on validity and the @maxX, @maxY parameters) and
276 * put into the normal modes list.
278 * Intended to be used either at bootup time or when major configuration
279 * changes have occurred.
281 * FIXME: take into account monitor limits
283 void drm_crtc_probe_single_output_modes(struct drm_output *output, int maxX, int maxY)
285 struct drm_device *dev = output->dev;
286 struct drm_display_mode *mode, *t;
288 //if (maxX == 0 || maxY == 0)
291 /* set all modes to the unverified state */
292 list_for_each_entry_safe(mode, t, &output->modes, head)
293 mode->status = MODE_UNVERIFIED;
295 output->status = (*output->funcs->detect)(output);
297 if (output->status == output_status_disconnected) {
298 DRM_DEBUG("%s is disconnected\n", output->name);
299 /* TODO set EDID to NULL */
303 ret = (*output->funcs->get_modes)(output);
306 drm_mode_output_list_update(output);
310 drm_mode_validate_size(dev, &output->modes, maxX,
312 list_for_each_entry_safe(mode, t, &output->modes, head) {
313 if (mode->status == MODE_OK)
314 mode->status = (*output->funcs->mode_valid)(output,mode);
318 drm_mode_prune_invalid(dev, &output->modes, TRUE);
320 if (list_empty(&output->modes)) {
321 struct drm_display_mode *stdmode;
323 DRM_DEBUG("No valid modes on %s\n", output->name);
325 /* Should we do this here ???
326 * When no valid EDID modes are available we end up
327 * here and bailed in the past, now we add a standard
328 * 640x480@60Hz mode and carry on.
330 stdmode = drm_mode_duplicate(dev, &std_mode[0]);
331 drm_mode_probed_add(output, stdmode);
332 drm_mode_list_concat(&output->probed_modes,
335 DRM_DEBUG("Adding standard 640x480 @ 60Hz to %s\n",
339 drm_mode_sort(&output->modes);
341 DRM_DEBUG("Probed modes for %s\n", output->name);
342 list_for_each_entry_safe(mode, t, &output->modes, head) {
343 mode->vrefresh = drm_mode_vrefresh(mode);
345 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
346 drm_mode_debug_printmodeline(dev, mode);
350 void drm_crtc_probe_output_modes(struct drm_device *dev, int maxX, int maxY)
352 struct drm_output *output;
354 list_for_each_entry(output, &dev->mode_config.output_list, head) {
355 drm_crtc_probe_single_output_modes(output, maxX, maxY);
360 * drm_crtc_set_mode - set a mode
361 * @crtc: CRTC to program
367 * Caller must hold mode config lock.
369 * Try to set @mode on @crtc. Give @crtc and its associated outputs a chance
370 * to fixup or reject the mode prior to trying to set it.
373 * True if the mode was set successfully, or false otherwise.
375 bool drm_crtc_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
378 struct drm_device *dev = crtc->dev;
379 struct drm_display_mode *adjusted_mode, saved_mode;
380 int saved_x, saved_y;
381 bool didLock = false;
383 struct drm_output *output;
385 adjusted_mode = drm_mode_duplicate(dev, mode);
387 crtc->enabled = drm_crtc_in_use(crtc);
389 if (!crtc->enabled) {
393 didLock = crtc->funcs->lock(crtc);
395 saved_mode = crtc->mode;
399 /* Update crtc values up front so the driver can rely on them for mode
406 /* XXX short-circuit changes to base location only */
408 /* Pass our mode to the outputs and the CRTC to give them a chance to
409 * adjust it according to limitations or output properties, and also
410 * a chance to reject the mode entirely.
412 list_for_each_entry(output, &dev->mode_config.output_list, head) {
414 if (output->crtc != crtc)
417 if (!output->funcs->mode_fixup(output, mode, adjusted_mode)) {
422 if (!crtc->funcs->mode_fixup(crtc, mode, adjusted_mode)) {
426 /* Prepare the outputs and CRTCs before setting the mode. */
427 list_for_each_entry(output, &dev->mode_config.output_list, head) {
429 if (output->crtc != crtc)
432 /* Disable the output as the first thing we do. */
433 output->funcs->prepare(output);
436 crtc->funcs->prepare(crtc);
438 /* Set up the DPLL and any output state that needs to adjust or depend
441 crtc->funcs->mode_set(crtc, mode, adjusted_mode, x, y);
443 list_for_each_entry(output, &dev->mode_config.output_list, head) {
445 if (output->crtc != crtc)
448 DRM_INFO("%s: set mode %s %x\n", output->name, mode->name, mode->mode_id);
450 output->funcs->mode_set(output, mode, adjusted_mode);
453 /* Now, enable the clocks, plane, pipe, and outputs that we set up. */
454 crtc->funcs->commit(crtc);
456 list_for_each_entry(output, &dev->mode_config.output_list, head) {
458 if (output->crtc != crtc)
461 output->funcs->commit(output);
463 #if 0 // TODO def RANDR_12_INTERFACE
464 if (output->randr_output)
465 RRPostPendingProperties (output->randr_output);
469 /* XXX free adjustedmode */
470 drm_mode_destroy(dev, adjusted_mode);
473 // if (scrn->pScreen)
474 // drm_crtc_set_screen_sub_pixel_order(dev);
480 crtc->mode = saved_mode;
484 crtc->funcs->unlock (crtc);
488 EXPORT_SYMBOL(drm_crtc_set_mode);
491 * drm_disable_unused_functions - disable unused objects
495 * Caller must hold mode config lock.
497 * If an output or CRTC isn't part of @dev's mode_config, it can be disabled
498 * by calling its dpms function, which should power it off.
500 void drm_disable_unused_functions(struct drm_device *dev)
502 struct drm_output *output;
503 struct drm_crtc *crtc;
505 list_for_each_entry(output, &dev->mode_config.output_list, head) {
507 (*output->funcs->dpms)(output, DPMSModeOff);
510 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
512 crtc->funcs->dpms(crtc, DPMSModeOff);
517 * drm_mode_probed_add - add a mode to the specified output's probed mode list
518 * @output: output the new mode
522 * Caller must hold mode config lock.
524 * Add @mode to @output's mode list for later use.
526 void drm_mode_probed_add(struct drm_output *output,
527 struct drm_display_mode *mode)
529 list_add(&mode->head, &output->probed_modes);
531 EXPORT_SYMBOL(drm_mode_probed_add);
534 * drm_mode_remove - remove and free a mode
535 * @output: output list to modify
536 * @mode: mode to remove
539 * Caller must hold mode config lock.
541 * Remove @mode from @output's mode list, then free it.
543 void drm_mode_remove(struct drm_output *output, struct drm_display_mode *mode)
545 list_del(&mode->head);
548 EXPORT_SYMBOL(drm_mode_remove);
551 * drm_output_create - create a new output
553 * @funcs: callbacks for this output
554 * @name: user visible name of the output
557 * Caller must hold @dev's mode_config lock.
559 * Creates a new drm_output structure and adds it to @dev's mode_config
563 * Pointer to the new output or NULL on error.
565 struct drm_output *drm_output_create(struct drm_device *dev,
566 const struct drm_output_funcs *funcs,
569 struct drm_output *output = NULL;
571 output = kzalloc(sizeof(struct drm_output), GFP_KERNEL);
576 output->funcs = funcs;
577 output->id = drm_idr_get(dev, output);
579 strncpy(output->name, name, DRM_OUTPUT_LEN);
580 output->name[DRM_OUTPUT_LEN - 1] = 0;
581 output->subpixel_order = SubPixelUnknown;
582 INIT_LIST_HEAD(&output->user_modes);
583 INIT_LIST_HEAD(&output->probed_modes);
584 INIT_LIST_HEAD(&output->modes);
586 /* output_set_monitor(output)? */
587 /* check for output_ignored(output)? */
589 mutex_lock(&dev->mode_config.mutex);
590 list_add_tail(&output->head, &dev->mode_config.output_list);
591 dev->mode_config.num_output++;
593 drm_output_attach_property(output, dev->mode_config.edid_property, 0);
595 mutex_unlock(&dev->mode_config.mutex);
600 EXPORT_SYMBOL(drm_output_create);
603 * drm_output_destroy - remove an output
604 * @output: output to remove
607 * Caller must hold @dev's mode_config lock.
609 * Call @output's cleanup function, then remove the output from the DRM
610 * mode_config after freeing @output's modes.
612 void drm_output_destroy(struct drm_output *output)
614 struct drm_device *dev = output->dev;
615 struct drm_display_mode *mode, *t;
617 if (*output->funcs->cleanup)
618 (*output->funcs->cleanup)(output);
620 list_for_each_entry_safe(mode, t, &output->probed_modes, head)
621 drm_mode_remove(output, mode);
623 list_for_each_entry_safe(mode, t, &output->modes, head)
624 drm_mode_remove(output, mode);
626 list_for_each_entry_safe(mode, t, &output->user_modes, head)
627 drm_mode_remove(output, mode);
629 mutex_lock(&dev->mode_config.mutex);
630 drm_idr_put(dev, output->id);
631 list_del(&output->head);
632 mutex_unlock(&dev->mode_config.mutex);
635 EXPORT_SYMBOL(drm_output_destroy);
638 * drm_output_rename - rename an output
639 * @output: output to rename
640 * @name: new user visible name
645 * Simply stuff a new name into @output's name field, based on @name.
648 * True if the name was changed, false otherwise.
650 bool drm_output_rename(struct drm_output *output, const char *name)
655 strncpy(output->name, name, DRM_OUTPUT_LEN);
656 output->name[DRM_OUTPUT_LEN - 1] = 0;
658 DRM_DEBUG("Changed name to %s\n", output->name);
659 // drm_output_set_monitor(output);
660 // if (drm_output_ignored(output))
665 EXPORT_SYMBOL(drm_output_rename);
668 * drm_mode_create - create a new display mode
674 * Create a new drm_display_mode, give it an ID, and return it.
677 * Pointer to new mode on success, NULL on error.
679 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
681 struct drm_display_mode *nmode;
683 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
687 nmode->mode_id = drm_idr_get(dev, nmode);
690 EXPORT_SYMBOL(drm_mode_create);
693 * drm_mode_destroy - remove a mode
695 * @mode: mode to remove
698 * Caller must hold mode config lock.
700 * Free @mode's unique identifier, then free it.
702 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
704 drm_idr_put(dev, mode->mode_id);
708 EXPORT_SYMBOL(drm_mode_destroy);
711 * drm_mode_config_init - initialize DRM mode_configuration structure
715 * None, should happen single threaded at init time.
717 * Initialize @dev's mode_config structure, used for tracking the graphics
718 * configuration of @dev.
720 void drm_mode_config_init(struct drm_device *dev)
722 mutex_init(&dev->mode_config.mutex);
723 INIT_LIST_HEAD(&dev->mode_config.fb_list);
724 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
725 INIT_LIST_HEAD(&dev->mode_config.output_list);
726 INIT_LIST_HEAD(&dev->mode_config.property_list);
727 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
728 idr_init(&dev->mode_config.crtc_idr);
729 dev->mode_config.edid_property = drm_property_create(dev,
730 DRM_MODE_PROP_BLOB | DRM_MODE_PROP_IMMUTABLE,
733 EXPORT_SYMBOL(drm_mode_config_init);
736 * drm_get_buffer_object - find the buffer object for a given handle
738 * @bo: pointer to caller's buffer_object pointer
739 * @handle: handle to lookup
742 * Must take @dev's struct_mutex to protect buffer object lookup.
744 * Given @handle, lookup the buffer object in @dev and put it in the caller's
748 * Zero on success, -EINVAL if the handle couldn't be found.
750 static int drm_get_buffer_object(struct drm_device *dev, struct drm_buffer_object **bo, unsigned long handle)
752 struct drm_user_object *uo;
753 struct drm_hash_item *hash;
758 mutex_lock(&dev->struct_mutex);
759 ret = drm_ht_find_item(&dev->object_hash, handle, &hash);
761 DRM_ERROR("Couldn't find handle.\n");
766 uo = drm_hash_entry(hash, struct drm_user_object, hash);
767 if (uo->type != drm_buffer_type) {
772 *bo = drm_user_object_entry(uo, struct drm_buffer_object, base);
775 mutex_unlock(&dev->struct_mutex);
780 * drm_pick_crtcs - pick crtcs for output devices
784 * Caller must hold mode config lock.
786 static void drm_pick_crtcs (struct drm_device *dev)
789 struct drm_output *output, *output_equal;
790 struct drm_crtc *crtc;
791 struct drm_display_mode *des_mode = NULL, *modes, *modes_equal;
793 list_for_each_entry(output, &dev->mode_config.output_list, head) {
796 /* Don't hook up outputs that are disconnected ??
798 * This is debateable. Do we want fixed /dev/fbX or
799 * dynamic on hotplug (need mode code for that though) ?
801 * If we don't hook up outputs now, then we only create
802 * /dev/fbX for the output that's enabled, that's good as
803 * the users console will be on that output.
805 * If we do hook up outputs that are disconnected now, then
806 * the user may end up having to muck about with the fbcon
807 * map flags to assign his console to the enabled output. Ugh.
809 if (output->status != output_status_connected)
813 list_for_each_entry(des_mode, &output->modes, head) {
814 if (des_mode->type & DRM_MODE_TYPE_PREFERRED)
818 /* No preferred mode, let's just select the first available */
819 if (!des_mode || !(des_mode->type & DRM_MODE_TYPE_PREFERRED)) {
820 list_for_each_entry(des_mode, &output->modes, head) {
827 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
831 if ((output->possible_crtcs & (1 << c)) == 0)
834 list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
835 if (output->id == output_equal->id)
838 /* Find out if crtc has been assigned before */
839 if (output_equal->crtc == crtc)
843 #if 1 /* continue for now */
849 list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
851 if (output->id == output_equal->id)
854 list_for_each_entry(modes, &output->modes, head) {
855 list_for_each_entry(modes_equal, &output_equal->modes, head) {
856 if (drm_mode_equal (modes, modes_equal)) {
857 if ((output->possible_clones & output_equal->possible_clones) && (output_equal->crtc == crtc)) {
858 printk("Cloning %s (0x%lx) to %s (0x%lx)\n",output->name,output->possible_clones,output_equal->name,output_equal->possible_clones);
868 /* crtc has been assigned skip it */
872 /* Found a CRTC to attach to, do it ! */
874 output->crtc->desired_mode = des_mode;
875 output->initial_x = 0;
876 output->initial_y = 0;
877 DRM_DEBUG("Desired mode for CRTC %d is 0x%x:%s\n",c,des_mode->mode_id, des_mode->name);
885 * drm_initial_config - setup a sane initial output configuration
887 * @can_grow: this configuration is growable
890 * Called at init time, must take mode config lock.
892 * Scan the CRTCs and outputs and try to put together an initial setup.
893 * At the moment, this is a cloned configuration across all heads with
894 * a new framebuffer object as the backing store.
897 * Zero if everything went ok, nonzero otherwise.
899 bool drm_initial_config(struct drm_device *dev, bool can_grow)
901 struct drm_output *output;
902 struct drm_crtc *crtc;
905 mutex_lock(&dev->mode_config.mutex);
907 drm_crtc_probe_output_modes(dev, 2048, 2048);
911 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
913 /* can't setup the crtc if there's no assigned mode */
914 if (!crtc->desired_mode)
917 /* Now setup the fbdev for attached crtcs */
918 dev->driver->fb_probe(dev, crtc);
921 /* This is a little screwy, as we've already walked the outputs
922 * above, but it's a little bit of magic too. There's the potential
923 * for things not to get setup above if an existing device gets
924 * re-assigned thus confusing the hardware. By walking the outputs
925 * this fixes up their crtc's.
927 list_for_each_entry(output, &dev->mode_config.output_list, head) {
929 /* can't setup the output if there's no assigned mode */
930 if (!output->crtc || !output->crtc->desired_mode)
933 /* and needs an attached fb */
934 if (output->crtc->fb)
935 drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0);
938 drm_disable_unused_functions(dev);
940 mutex_unlock(&dev->mode_config.mutex);
943 EXPORT_SYMBOL(drm_initial_config);
946 * drm_mode_config_cleanup - free up DRM mode_config info
950 * Caller must hold mode config lock.
952 * Free up all the outputs and CRTCs associated with this DRM device, then
953 * free up the framebuffers and associated buffer objects.
955 * FIXME: cleanup any dangling user buffer objects too
957 void drm_mode_config_cleanup(struct drm_device *dev)
959 struct drm_output *output, *ot;
960 struct drm_crtc *crtc, *ct;
961 struct drm_framebuffer *fb, *fbt;
962 struct drm_property *property, *pt;
964 list_for_each_entry_safe(output, ot, &dev->mode_config.output_list, head) {
965 drm_output_destroy(output);
968 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, head) {
969 drm_property_destroy(dev, property);
972 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
973 if (fb->bo->type != drm_bo_type_kernel)
974 drm_framebuffer_destroy(fb);
976 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
979 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
980 drm_crtc_destroy(crtc);
984 EXPORT_SYMBOL(drm_mode_config_cleanup);
987 * drm_crtc_set_config - set a new config from userspace
988 * @crtc: CRTC to setup
989 * @crtc_info: user provided configuration
990 * @new_mode: new mode to set
991 * @output_set: set of outputs for the new config
992 * @fb: new framebuffer
995 * Caller must hold mode config lock.
997 * Setup a new configuration, provided by the user in @crtc_info, and enable
1003 int drm_crtc_set_config(struct drm_crtc *crtc, struct drm_mode_crtc *crtc_info, struct drm_display_mode *new_mode, struct drm_output **output_set, struct drm_framebuffer *fb)
1005 struct drm_device *dev = crtc->dev;
1006 struct drm_crtc **save_crtcs, *new_crtc;
1007 bool save_enabled = crtc->enabled;
1008 bool changed = false;
1009 struct drm_output *output;
1012 save_crtcs = kzalloc(dev->mode_config.num_crtc * sizeof(struct drm_crtc *), GFP_KERNEL);
1019 if (crtc_info->x != crtc->x || crtc_info->y != crtc->y)
1022 if (new_mode && !drm_mode_equal(new_mode, &crtc->mode))
1025 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1026 save_crtcs[count++] = output->crtc;
1028 if (output->crtc == crtc)
1031 new_crtc = output->crtc;
1033 for (ro = 0; ro < crtc_info->count_outputs; ro++) {
1034 if (output_set[ro] == output)
1037 if (new_crtc != output->crtc) {
1039 output->crtc = new_crtc;
1045 crtc->enabled = (new_mode != NULL);
1046 if (new_mode != NULL) {
1047 DRM_DEBUG("attempting to set mode from userspace\n");
1048 drm_mode_debug_printmodeline(dev, new_mode);
1049 if (!drm_crtc_set_mode(crtc, new_mode, crtc_info->x,
1051 crtc->enabled = save_enabled;
1053 list_for_each_entry(output, &dev->mode_config.output_list, head)
1054 output->crtc = save_crtcs[count++];
1058 crtc->desired_x = crtc_info->x;
1059 crtc->desired_y = crtc_info->y;
1060 crtc->desired_mode = new_mode;
1062 drm_disable_unused_functions(dev);
1069 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1070 * @out: drm_mode_modeinfo struct to return to the user
1071 * @in: drm_display_mode to use
1076 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1079 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, struct drm_display_mode *in)
1081 out->clock = in->clock;
1082 out->hdisplay = in->hdisplay;
1083 out->hsync_start = in->hsync_start;
1084 out->hsync_end = in->hsync_end;
1085 out->htotal = in->htotal;
1086 out->hskew = in->hskew;
1087 out->vdisplay = in->vdisplay;
1088 out->vsync_start = in->vsync_start;
1089 out->vsync_end = in->vsync_end;
1090 out->vtotal = in->vtotal;
1091 out->vscan = in->vscan;
1092 out->vrefresh = in->vrefresh;
1093 out->flags = in->flags;
1094 out->type = in->type;
1095 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1096 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1100 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1101 * @out: drm_display_mode to return to the user
1102 * @in: drm_mode_modeinfo to use
1107 * Convert a drmo_mode_modeinfo into a drm_display_mode structure to return to
1110 void drm_crtc_convert_umode(struct drm_display_mode *out, struct drm_mode_modeinfo *in)
1112 out->clock = in->clock;
1113 out->hdisplay = in->hdisplay;
1114 out->hsync_start = in->hsync_start;
1115 out->hsync_end = in->hsync_end;
1116 out->htotal = in->htotal;
1117 out->hskew = in->hskew;
1118 out->vdisplay = in->vdisplay;
1119 out->vsync_start = in->vsync_start;
1120 out->vsync_end = in->vsync_end;
1121 out->vtotal = in->vtotal;
1122 out->vscan = in->vscan;
1123 out->vrefresh = in->vrefresh;
1124 out->flags = in->flags;
1125 out->type = in->type;
1126 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1127 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1131 * drm_mode_getresources - get graphics configuration
1132 * @inode: inode from the ioctl
1133 * @filp: file * from the ioctl
1134 * @cmd: cmd from ioctl
1135 * @arg: arg from ioctl
1138 * Takes mode config lock.
1140 * Construct a set of configuration description structures and return
1141 * them to the user, including CRTC, output and framebuffer configuration.
1143 * Called by the user via ioctl.
1146 * Zero on success, errno on failure.
1148 int drm_mode_getresources(struct drm_device *dev,
1149 void *data, struct drm_file *file_priv)
1151 struct drm_mode_card_res *card_res = data;
1152 struct list_head *lh;
1153 struct drm_framebuffer *fb;
1154 struct drm_output *output;
1155 struct drm_crtc *crtc;
1157 int output_count = 0;
1161 uint32_t __user *fb_id;
1162 uint32_t __user *crtc_id;
1163 uint32_t __user *output_id;
1165 mutex_lock(&dev->mode_config.mutex);
1167 list_for_each(lh, &dev->mode_config.fb_list)
1170 list_for_each(lh, &dev->mode_config.crtc_list)
1173 list_for_each(lh, &dev->mode_config.output_list)
1176 card_res->max_height = dev->mode_config.max_height;
1177 card_res->min_height = dev->mode_config.min_height;
1178 card_res->max_width = dev->mode_config.max_width;
1179 card_res->min_width = dev->mode_config.min_width;
1181 /* handle this in 4 parts */
1183 if (card_res->count_fbs >= fb_count) {
1185 fb_id = (uint32_t *)(unsigned long)card_res->fb_id_ptr;
1186 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
1187 if (put_user(fb->id, fb_id + copied)) {
1194 card_res->count_fbs = fb_count;
1197 if (card_res->count_crtcs >= crtc_count) {
1199 crtc_id = (uint32_t *)(unsigned long)card_res->crtc_id_ptr;
1200 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head){
1201 DRM_DEBUG("CRTC ID is %d\n", crtc->id);
1202 if (put_user(crtc->id, crtc_id + copied)) {
1209 card_res->count_crtcs = crtc_count;
1213 if (card_res->count_outputs >= output_count) {
1215 output_id = (uint32_t *)(unsigned long)card_res->output_id_ptr;
1216 list_for_each_entry(output, &dev->mode_config.output_list,
1218 DRM_DEBUG("OUTPUT ID is %d\n", output->id);
1219 if (put_user(output->id, output_id + copied)) {
1226 card_res->count_outputs = output_count;
1228 DRM_DEBUG("Counted %d %d\n", card_res->count_crtcs,
1229 card_res->count_outputs);
1232 mutex_unlock(&dev->mode_config.mutex);
1237 * drm_mode_getcrtc - get CRTC configuration
1238 * @inode: inode from the ioctl
1239 * @filp: file * from the ioctl
1240 * @cmd: cmd from ioctl
1241 * @arg: arg from ioctl
1246 * Construct a CRTC configuration structure to return to the user.
1248 * Called by the user via ioctl.
1251 * Zero on success, errno on failure.
1253 int drm_mode_getcrtc(struct drm_device *dev,
1254 void *data, struct drm_file *file_priv)
1256 struct drm_mode_crtc *crtc_resp = data;
1257 struct drm_crtc *crtc;
1258 struct drm_output *output;
1262 mutex_lock(&dev->mode_config.mutex);
1263 crtc = idr_find(&dev->mode_config.crtc_idr, crtc_resp->crtc_id);
1264 if (!crtc || (crtc->id != crtc_resp->crtc_id)) {
1269 crtc_resp->x = crtc->x;
1270 crtc_resp->y = crtc->y;
1273 crtc_resp->fb_id = crtc->fb->id;
1275 crtc_resp->fb_id = 0;
1277 crtc_resp->outputs = 0;
1278 if (crtc->enabled) {
1280 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1281 crtc_resp->mode_valid = 1;
1283 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1284 if (output->crtc == crtc)
1285 crtc_resp->outputs |= 1 << (ocount++);
1289 crtc_resp->mode_valid = 0;
1293 mutex_unlock(&dev->mode_config.mutex);
1298 * drm_mode_getoutput - get output configuration
1299 * @inode: inode from the ioctl
1300 * @filp: file * from the ioctl
1301 * @cmd: cmd from ioctl
1302 * @arg: arg from ioctl
1307 * Construct a output configuration structure to return to the user.
1309 * Called by the user via ioctl.
1312 * Zero on success, errno on failure.
1314 int drm_mode_getoutput(struct drm_device *dev,
1315 void *data, struct drm_file *file_priv)
1317 struct drm_mode_get_output *out_resp = data;
1318 struct drm_output *output;
1319 struct drm_display_mode *mode;
1321 int props_count = 0;
1325 struct drm_mode_modeinfo u_mode;
1326 struct drm_mode_modeinfo __user *mode_ptr;
1327 uint32_t __user *prop_ptr;
1328 uint64_t __user *prop_values;
1330 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1332 DRM_DEBUG("output id %d:\n", out_resp->output);
1334 mutex_lock(&dev->mode_config.mutex);
1335 output= idr_find(&dev->mode_config.crtc_idr, out_resp->output);
1336 if (!output || (output->id != out_resp->output)) {
1341 list_for_each_entry(mode, &output->modes, head)
1344 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1345 if (output->property_ids[i] != 0) {
1350 if (out_resp->count_modes == 0) {
1351 drm_crtc_probe_single_output_modes(output, dev->mode_config.max_width, dev->mode_config.max_height);
1354 strncpy(out_resp->name, output->name, DRM_OUTPUT_NAME_LEN);
1355 out_resp->name[DRM_OUTPUT_NAME_LEN-1] = 0;
1357 out_resp->mm_width = output->mm_width;
1358 out_resp->mm_height = output->mm_height;
1359 out_resp->subpixel = output->subpixel_order;
1360 out_resp->connection = output->status;
1362 out_resp->crtc = output->crtc->id;
1366 out_resp->crtcs = output->possible_crtcs;
1367 out_resp->clones = output->possible_clones;
1369 if ((out_resp->count_modes >= mode_count) && mode_count) {
1371 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1372 list_for_each_entry(mode, &output->modes, head) {
1373 drm_crtc_convert_to_umode(&u_mode, mode);
1374 if (copy_to_user(mode_ptr + copied,
1375 &u_mode, sizeof(u_mode))) {
1383 out_resp->count_modes = mode_count;
1385 if ((out_resp->count_props >= props_count) && props_count) {
1387 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1388 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1389 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1390 if (output->property_ids[i] != 0) {
1391 if (put_user(output->property_ids[i], prop_ptr + copied)) {
1396 if (put_user(output->property_values[i], prop_values + copied)) {
1404 out_resp->count_props = props_count;
1407 mutex_unlock(&dev->mode_config.mutex);
1412 * drm_mode_setcrtc - set CRTC configuration
1413 * @inode: inode from the ioctl
1414 * @filp: file * from the ioctl
1415 * @cmd: cmd from ioctl
1416 * @arg: arg from ioctl
1421 * Build a new CRTC configuration based on user request.
1423 * Called by the user via ioctl.
1426 * Zero on success, errno on failure.
1428 int drm_mode_setcrtc(struct drm_device *dev,
1429 void *data, struct drm_file *file_priv)
1431 struct drm_mode_crtc *crtc_req = data;
1432 struct drm_crtc *crtc;
1433 struct drm_output **output_set = NULL, *output;
1434 struct drm_framebuffer *fb = NULL;
1435 struct drm_display_mode *mode = NULL;
1438 uint32_t __user *set_outputs_ptr;
1440 mutex_lock(&dev->mode_config.mutex);
1441 crtc = idr_find(&dev->mode_config.crtc_idr, crtc_req->crtc_id);
1442 if (!crtc || (crtc->id != crtc_req->crtc_id)) {
1443 DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1448 if (crtc_req->mode_valid) {
1449 /* if we have a mode we need a framebuffer */
1450 if (crtc_req->fb_id) {
1451 fb = idr_find(&dev->mode_config.crtc_idr, crtc_req->fb_id);
1452 if (!fb || (fb->id != crtc_req->fb_id)) {
1453 DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id);
1459 mode = drm_mode_create(dev);
1460 drm_crtc_convert_umode(mode, &crtc_req->mode);
1463 if (crtc_req->count_outputs == 0 && mode) {
1464 DRM_DEBUG("Count outputs is 0 but mode set\n");
1469 if (crtc_req->count_outputs > 0 && !mode && !fb) {
1470 DRM_DEBUG("Count outputs is %d but no mode or fb set\n", crtc_req->count_outputs);
1475 if (crtc_req->count_outputs > 0) {
1477 output_set = kmalloc(crtc_req->count_outputs *
1478 sizeof(struct drm_output *), GFP_KERNEL);
1484 for (i = 0; i < crtc_req->count_outputs; i++) {
1485 set_outputs_ptr = (uint32_t *)(unsigned long)crtc_req->set_outputs_ptr;
1486 if (get_user(out_id, &set_outputs_ptr[i])) {
1491 output = idr_find(&dev->mode_config.crtc_idr, out_id);
1492 if (!output || (out_id != output->id)) {
1493 DRM_DEBUG("Output id %d unknown\n", out_id);
1498 output_set[i] = output;
1502 ret = drm_crtc_set_config(crtc, crtc_req, mode, output_set, fb);
1505 mutex_unlock(&dev->mode_config.mutex);
1510 * drm_mode_addfb - add an FB to the graphics configuration
1511 * @inode: inode from the ioctl
1512 * @filp: file * from the ioctl
1513 * @cmd: cmd from ioctl
1514 * @arg: arg from ioctl
1517 * Takes mode config lock.
1519 * Add a new FB to the specified CRTC, given a user request.
1521 * Called by the user via ioctl.
1524 * Zero on success, errno on failure.
1526 int drm_mode_addfb(struct drm_device *dev,
1527 void *data, struct drm_file *file_priv)
1529 struct drm_mode_fb_cmd *r = data;
1530 struct drm_mode_config *config = &dev->mode_config;
1531 struct drm_framebuffer *fb;
1532 struct drm_buffer_object *bo;
1533 struct drm_crtc *crtc;
1536 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1537 DRM_ERROR("mode new framebuffer width not within limits\n");
1540 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1541 DRM_ERROR("mode new framebuffer height not within limits\n");
1545 mutex_lock(&dev->mode_config.mutex);
1546 /* TODO check limits are okay */
1547 ret = drm_get_buffer_object(dev, &bo, r->handle);
1553 /* TODO check buffer is sufficently large */
1554 /* TODO setup destructor callback */
1556 fb = drm_framebuffer_create(dev);
1562 fb->width = r->width;
1563 fb->height = r->height;
1564 fb->pitch = r->pitch;
1565 fb->bits_per_pixel = r->bpp;
1566 fb->depth = r->depth;
1567 fb->offset = bo->offset;
1570 r->buffer_id = fb->id;
1572 list_add(&fb->filp_head, &file_priv->fbs);
1574 /* FIXME: bind the fb to the right crtc */
1575 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1577 dev->driver->fb_probe(dev, crtc);
1581 mutex_unlock(&dev->mode_config.mutex);
1586 * drm_mode_rmfb - remove an FB from the configuration
1587 * @inode: inode from the ioctl
1588 * @filp: file * from the ioctl
1589 * @cmd: cmd from ioctl
1590 * @arg: arg from ioctl
1593 * Takes mode config lock.
1595 * Remove the FB specified by the user.
1597 * Called by the user via ioctl.
1600 * Zero on success, errno on failure.
1602 int drm_mode_rmfb(struct drm_device *dev,
1603 void *data, struct drm_file *file_priv)
1605 struct drm_framebuffer *fb = 0;
1606 uint32_t *id = data;
1609 mutex_lock(&dev->mode_config.mutex);
1610 fb = idr_find(&dev->mode_config.crtc_idr, *id);
1611 /* TODO check that we realy get a framebuffer back. */
1612 if (!fb || (*id != fb->id)) {
1613 DRM_ERROR("mode invalid framebuffer id\n");
1618 /* TODO check if we own the buffer */
1619 /* TODO release all crtc connected to the framebuffer */
1620 /* bind the fb to the crtc for now */
1621 /* TODO unhock the destructor from the buffer object */
1623 if (fb->bo->type != drm_bo_type_kernel)
1624 drm_framebuffer_destroy(fb);
1626 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
1629 mutex_unlock(&dev->mode_config.mutex);
1634 * drm_mode_getfb - get FB info
1635 * @inode: inode from the ioctl
1636 * @filp: file * from the ioctl
1637 * @cmd: cmd from ioctl
1638 * @arg: arg from ioctl
1643 * Lookup the FB given its ID and return info about it.
1645 * Called by the user via ioctl.
1648 * Zero on success, errno on failure.
1650 int drm_mode_getfb(struct drm_device *dev,
1651 void *data, struct drm_file *file_priv)
1653 struct drm_mode_fb_cmd *r = data;
1654 struct drm_framebuffer *fb;
1657 mutex_lock(&dev->mode_config.mutex);
1658 fb = idr_find(&dev->mode_config.crtc_idr, r->buffer_id);
1659 if (!fb || (r->buffer_id != fb->id)) {
1660 DRM_ERROR("invalid framebuffer id\n");
1665 r->height = fb->height;
1666 r->width = fb->width;
1667 r->depth = fb->depth;
1668 r->bpp = fb->bits_per_pixel;
1669 r->handle = fb->bo->base.hash.key;
1670 r->pitch = fb->pitch;
1673 mutex_unlock(&dev->mode_config.mutex);
1678 * drm_fb_release - remove and free the FBs on this file
1679 * @filp: file * from the ioctl
1682 * Takes mode config lock.
1684 * Destroy all the FBs associated with @filp.
1686 * Called by the user via ioctl.
1689 * Zero on success, errno on failure.
1691 void drm_fb_release(struct file *filp)
1693 struct drm_file *priv = filp->private_data;
1694 struct drm_device *dev = priv->head->dev;
1695 struct drm_framebuffer *fb, *tfb;
1697 mutex_lock(&dev->mode_config.mutex);
1698 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1699 list_del(&fb->filp_head);
1700 if (fb->bo->type != drm_bo_type_kernel)
1701 drm_framebuffer_destroy(fb);
1703 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
1705 mutex_unlock(&dev->mode_config.mutex);
1712 static int drm_mode_attachmode(struct drm_device *dev,
1713 struct drm_output *output,
1714 struct drm_display_mode *mode)
1718 list_add_tail(&mode->head, &output->user_modes);
1722 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1723 struct drm_display_mode *mode)
1725 struct drm_output *output;
1727 struct drm_display_mode *dup_mode;
1729 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1730 if (output->crtc == crtc) {
1732 dup_mode = drm_mode_duplicate(dev, mode);
1735 ret = drm_mode_attachmode(dev, output, dup_mode);
1743 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1745 static int drm_mode_detachmode(struct drm_device *dev,
1746 struct drm_output *output,
1747 struct drm_display_mode *mode)
1751 struct drm_display_mode *match_mode, *t;
1753 list_for_each_entry_safe(match_mode, t, &output->user_modes, head) {
1754 if (drm_mode_equal(match_mode, mode)) {
1755 list_del(&match_mode->head);
1756 drm_mode_destroy(dev, match_mode);
1768 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1770 struct drm_output *output;
1772 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1773 drm_mode_detachmode(dev, output, mode);
1777 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1780 * drm_fb_attachmode - Attach a user mode to an output
1781 * @inode: inode from the ioctl
1782 * @filp: file * from the ioctl
1783 * @cmd: cmd from ioctl
1784 * @arg: arg from ioctl
1786 * This attaches a user specified mode to an output.
1787 * Called by the user via ioctl.
1790 * Zero on success, errno on failure.
1792 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1793 void *data, struct drm_file *file_priv)
1795 struct drm_mode_mode_cmd *mode_cmd = data;
1796 struct drm_output *output;
1797 struct drm_display_mode *mode;
1798 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1801 mutex_lock(&dev->mode_config.mutex);
1803 output = idr_find(&dev->mode_config.crtc_idr, mode_cmd->output_id);
1804 if (!output || (output->id != mode_cmd->output_id)) {
1809 mode = drm_mode_create(dev);
1815 drm_crtc_convert_umode(mode, umode);
1817 ret = drm_mode_attachmode(dev, output, mode);
1819 mutex_unlock(&dev->mode_config.mutex);
1825 * drm_fb_detachmode - Detach a user specified mode from an output
1826 * @inode: inode from the ioctl
1827 * @filp: file * from the ioctl
1828 * @cmd: cmd from ioctl
1829 * @arg: arg from ioctl
1831 * Called by the user via ioctl.
1834 * Zero on success, errno on failure.
1836 int drm_mode_detachmode_ioctl(struct drm_device *dev,
1837 void *data, struct drm_file *file_priv)
1839 struct drm_mode_mode_cmd *mode_cmd = data;
1840 struct drm_output *output;
1841 struct drm_display_mode mode;
1842 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1845 mutex_lock(&dev->mode_config.mutex);
1847 output = idr_find(&dev->mode_config.crtc_idr, mode_cmd->output_id);
1848 if (!output || (output->id != mode_cmd->output_id)) {
1853 drm_crtc_convert_umode(&mode, umode);
1854 ret = drm_mode_detachmode(dev, output, &mode);
1856 mutex_unlock(&dev->mode_config.mutex);
1860 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1861 const char *name, int num_values)
1863 struct drm_property *property = NULL;
1865 property = kzalloc(sizeof(struct drm_output), GFP_KERNEL);
1870 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
1871 if (!property->values)
1875 property->id = drm_idr_get(dev, property);
1876 property->flags = flags;
1877 property->num_values = num_values;
1878 INIT_LIST_HEAD(&property->enum_blob_list);
1881 strncpy(property->name, name, DRM_PROP_NAME_LEN);
1883 list_add_tail(&property->head, &dev->mode_config.property_list);
1889 EXPORT_SYMBOL(drm_property_create);
1891 int drm_property_add_enum(struct drm_property *property, int index,
1892 uint64_t value, const char *name)
1894 struct drm_property_enum *prop_enum;
1896 if (!(property->flags & DRM_MODE_PROP_ENUM))
1899 if (!list_empty(&property->enum_blob_list)) {
1900 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
1901 if (prop_enum->value == value) {
1902 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1903 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1909 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
1913 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1914 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1915 prop_enum->value = value;
1917 property->values[index] = value;
1918 list_add_tail(&prop_enum->head, &property->enum_blob_list);
1921 EXPORT_SYMBOL(drm_property_add_enum);
1923 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
1925 struct drm_property_enum *prop_enum, *pt;
1927 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
1928 list_del(&prop_enum->head);
1932 if (property->num_values)
1933 kfree(property->values);
1934 drm_idr_put(dev, property->id);
1935 list_del(&property->head);
1938 EXPORT_SYMBOL(drm_property_destroy);
1940 int drm_output_attach_property(struct drm_output *output,
1941 struct drm_property *property, uint64_t init_val)
1945 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1946 if (output->property_ids[i] == 0) {
1947 output->property_ids[i] = property->id;
1948 output->property_values[i] = init_val;
1953 if (i == DRM_OUTPUT_MAX_PROPERTY)
1957 EXPORT_SYMBOL(drm_output_attach_property);
1959 int drm_output_property_set_value(struct drm_output *output,
1960 struct drm_property *property, uint64_t value)
1964 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1965 if (output->property_ids[i] == property->id) {
1966 output->property_values[i] = value;
1971 if (i == DRM_OUTPUT_MAX_PROPERTY)
1975 EXPORT_SYMBOL(drm_output_property_set_value);
1977 int drm_mode_getproperty_ioctl(struct drm_device *dev,
1978 void *data, struct drm_file *file_priv)
1980 struct drm_mode_get_property *out_resp = data;
1981 struct drm_property *property;
1984 int value_count = 0;
1987 struct drm_property_enum *prop_enum;
1988 struct drm_property_enum __user *enum_ptr;
1989 struct drm_property_blob *prop_blob;
1990 uint32_t *blob_id_ptr;
1991 uint64_t __user *values_ptr;
1992 uint32_t __user *blob_length_ptr;
1994 mutex_lock(&dev->mode_config.mutex);
1995 property = idr_find(&dev->mode_config.crtc_idr, out_resp->prop_id);
1996 if (!property || (property->id != out_resp->prop_id)) {
2001 if (property->flags & DRM_MODE_PROP_ENUM) {
2002 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2004 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2005 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2009 value_count = property->num_values;
2011 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2012 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2013 out_resp->flags = property->flags;
2015 if ((out_resp->count_values >= value_count) && value_count) {
2016 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2017 for (i = 0; i < value_count; i++) {
2018 if (put_user(property->values[i], values_ptr + i)) {
2024 out_resp->count_values = value_count;
2026 if (property->flags & DRM_MODE_PROP_ENUM) {
2027 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2029 enum_ptr = (struct drm_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2030 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2031 if (put_user(prop_enum->value, &enum_ptr[copied].value)) {
2036 if (copy_to_user(&enum_ptr[copied].name,
2037 prop_enum->name, DRM_PROP_NAME_LEN)) {
2044 out_resp->count_enum_blobs = enum_count;
2047 if (property->flags & DRM_MODE_PROP_BLOB) {
2048 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2050 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2051 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2053 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2054 if (put_user(prop_blob->id, blob_id_ptr + copied)) {
2059 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2067 out_resp->count_enum_blobs = enum_count;
2070 mutex_unlock(&dev->mode_config.mutex);
2074 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2077 struct drm_property_blob *blob;
2079 if (!length || !data)
2082 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2086 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2087 blob->length = length;
2089 memcpy(blob->data, data, length);
2091 blob->id = drm_idr_get(dev, blob);
2093 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2097 static void drm_property_destroy_blob(struct drm_device *dev,
2098 struct drm_property_blob *blob)
2100 drm_idr_put(dev, blob->id);
2101 list_del(&blob->head);
2105 int drm_mode_getblob_ioctl(struct drm_device *dev,
2106 void *data, struct drm_file *file_priv)
2108 struct drm_mode_get_blob *out_resp = data;
2109 struct drm_property_blob *blob;
2113 mutex_lock(&dev->mode_config.mutex);
2115 blob = idr_find(&dev->mode_config.crtc_idr, out_resp->blob_id);
2116 if (!blob || (blob->id != out_resp->blob_id)) {
2121 if (out_resp->length == blob->length) {
2122 blob_ptr = (void *)(unsigned long)out_resp->data;
2123 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2128 out_resp->length = blob->length;
2131 mutex_unlock(&dev->mode_config.mutex);
2135 int drm_mode_output_update_edid_property(struct drm_output *output, unsigned char *edid)
2137 struct drm_device *dev = output->dev;
2139 if (output->edid_blob_ptr)
2140 drm_property_destroy_blob(dev, output->edid_blob_ptr);
2142 output->edid_blob_ptr = drm_property_create_blob(output->dev, 128, edid);
2144 ret = drm_output_property_set_value(output, dev->mode_config.edid_property, output->edid_blob_ptr->id);
2147 EXPORT_SYMBOL(drm_mode_output_update_edid_property);