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 mutex_unlock(&dev->mode_config.mutex);
598 EXPORT_SYMBOL(drm_output_create);
601 * drm_output_destroy - remove an output
602 * @output: output to remove
605 * Caller must hold @dev's mode_config lock.
607 * Call @output's cleanup function, then remove the output from the DRM
608 * mode_config after freeing @output's modes.
610 void drm_output_destroy(struct drm_output *output)
612 struct drm_device *dev = output->dev;
613 struct drm_display_mode *mode, *t;
615 if (*output->funcs->cleanup)
616 (*output->funcs->cleanup)(output);
618 list_for_each_entry_safe(mode, t, &output->probed_modes, head)
619 drm_mode_remove(output, mode);
621 list_for_each_entry_safe(mode, t, &output->modes, head)
622 drm_mode_remove(output, mode);
624 list_for_each_entry_safe(mode, t, &output->user_modes, head)
625 drm_mode_remove(output, mode);
627 mutex_lock(&dev->mode_config.mutex);
628 drm_idr_put(dev, output->id);
629 list_del(&output->head);
630 mutex_unlock(&dev->mode_config.mutex);
633 EXPORT_SYMBOL(drm_output_destroy);
636 * drm_output_rename - rename an output
637 * @output: output to rename
638 * @name: new user visible name
643 * Simply stuff a new name into @output's name field, based on @name.
646 * True if the name was changed, false otherwise.
648 bool drm_output_rename(struct drm_output *output, const char *name)
653 strncpy(output->name, name, DRM_OUTPUT_LEN);
654 output->name[DRM_OUTPUT_LEN - 1] = 0;
656 DRM_DEBUG("Changed name to %s\n", output->name);
657 // drm_output_set_monitor(output);
658 // if (drm_output_ignored(output))
663 EXPORT_SYMBOL(drm_output_rename);
666 * drm_mode_create - create a new display mode
672 * Create a new drm_display_mode, give it an ID, and return it.
675 * Pointer to new mode on success, NULL on error.
677 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
679 struct drm_display_mode *nmode;
681 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
685 nmode->mode_id = drm_idr_get(dev, nmode);
688 EXPORT_SYMBOL(drm_mode_create);
691 * drm_mode_destroy - remove a mode
693 * @mode: mode to remove
696 * Caller must hold mode config lock.
698 * Free @mode's unique identifier, then free it.
700 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
702 drm_idr_put(dev, mode->mode_id);
706 EXPORT_SYMBOL(drm_mode_destroy);
709 * drm_mode_config_init - initialize DRM mode_configuration structure
713 * None, should happen single threaded at init time.
715 * Initialize @dev's mode_config structure, used for tracking the graphics
716 * configuration of @dev.
718 void drm_mode_config_init(struct drm_device *dev)
720 mutex_init(&dev->mode_config.mutex);
721 INIT_LIST_HEAD(&dev->mode_config.fb_list);
722 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
723 INIT_LIST_HEAD(&dev->mode_config.output_list);
724 INIT_LIST_HEAD(&dev->mode_config.property_list);
725 idr_init(&dev->mode_config.crtc_idr);
727 EXPORT_SYMBOL(drm_mode_config_init);
730 * drm_get_buffer_object - find the buffer object for a given handle
732 * @bo: pointer to caller's buffer_object pointer
733 * @handle: handle to lookup
736 * Must take @dev's struct_mutex to protect buffer object lookup.
738 * Given @handle, lookup the buffer object in @dev and put it in the caller's
742 * Zero on success, -EINVAL if the handle couldn't be found.
744 static int drm_get_buffer_object(struct drm_device *dev, struct drm_buffer_object **bo, unsigned long handle)
746 struct drm_user_object *uo;
747 struct drm_hash_item *hash;
752 mutex_lock(&dev->struct_mutex);
753 ret = drm_ht_find_item(&dev->object_hash, handle, &hash);
755 DRM_ERROR("Couldn't find handle.\n");
760 uo = drm_hash_entry(hash, struct drm_user_object, hash);
761 if (uo->type != drm_buffer_type) {
766 *bo = drm_user_object_entry(uo, struct drm_buffer_object, base);
769 mutex_unlock(&dev->struct_mutex);
774 * drm_pick_crtcs - pick crtcs for output devices
778 * Caller must hold mode config lock.
780 static void drm_pick_crtcs (struct drm_device *dev)
783 struct drm_output *output, *output_equal;
784 struct drm_crtc *crtc;
785 struct drm_display_mode *des_mode = NULL, *modes, *modes_equal;
787 list_for_each_entry(output, &dev->mode_config.output_list, head) {
790 /* Don't hook up outputs that are disconnected ??
792 * This is debateable. Do we want fixed /dev/fbX or
793 * dynamic on hotplug (need mode code for that though) ?
795 * If we don't hook up outputs now, then we only create
796 * /dev/fbX for the output that's enabled, that's good as
797 * the users console will be on that output.
799 * If we do hook up outputs that are disconnected now, then
800 * the user may end up having to muck about with the fbcon
801 * map flags to assign his console to the enabled output. Ugh.
803 if (output->status != output_status_connected)
807 list_for_each_entry(des_mode, &output->modes, head) {
808 if (des_mode->type & DRM_MODE_TYPE_PREFERRED)
812 /* No preferred mode, let's just select the first available */
813 if (!des_mode || !(des_mode->type & DRM_MODE_TYPE_PREFERRED)) {
814 list_for_each_entry(des_mode, &output->modes, head) {
821 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
825 if ((output->possible_crtcs & (1 << c)) == 0)
828 list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
829 if (output->id == output_equal->id)
832 /* Find out if crtc has been assigned before */
833 if (output_equal->crtc == crtc)
837 #if 1 /* continue for now */
843 list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
845 if (output->id == output_equal->id)
848 list_for_each_entry(modes, &output->modes, head) {
849 list_for_each_entry(modes_equal, &output_equal->modes, head) {
850 if (drm_mode_equal (modes, modes_equal)) {
851 if ((output->possible_clones & output_equal->possible_clones) && (output_equal->crtc == crtc)) {
852 printk("Cloning %s (0x%lx) to %s (0x%lx)\n",output->name,output->possible_clones,output_equal->name,output_equal->possible_clones);
862 /* crtc has been assigned skip it */
866 /* Found a CRTC to attach to, do it ! */
868 output->crtc->desired_mode = des_mode;
869 output->initial_x = 0;
870 output->initial_y = 0;
871 DRM_DEBUG("Desired mode for CRTC %d is 0x%x:%s\n",c,des_mode->mode_id, des_mode->name);
879 * drm_initial_config - setup a sane initial output configuration
881 * @can_grow: this configuration is growable
884 * Called at init time, must take mode config lock.
886 * Scan the CRTCs and outputs and try to put together an initial setup.
887 * At the moment, this is a cloned configuration across all heads with
888 * a new framebuffer object as the backing store.
891 * Zero if everything went ok, nonzero otherwise.
893 bool drm_initial_config(struct drm_device *dev, bool can_grow)
895 struct drm_output *output;
896 struct drm_crtc *crtc;
899 mutex_lock(&dev->mode_config.mutex);
901 drm_crtc_probe_output_modes(dev, 2048, 2048);
905 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
907 /* can't setup the crtc if there's no assigned mode */
908 if (!crtc->desired_mode)
911 /* Now setup the fbdev for attached crtcs */
912 dev->driver->fb_probe(dev, crtc);
915 /* This is a little screwy, as we've already walked the outputs
916 * above, but it's a little bit of magic too. There's the potential
917 * for things not to get setup above if an existing device gets
918 * re-assigned thus confusing the hardware. By walking the outputs
919 * this fixes up their crtc's.
921 list_for_each_entry(output, &dev->mode_config.output_list, head) {
923 /* can't setup the output if there's no assigned mode */
924 if (!output->crtc || !output->crtc->desired_mode)
927 /* and needs an attached fb */
928 if (output->crtc->fb)
929 drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0);
932 drm_disable_unused_functions(dev);
934 mutex_unlock(&dev->mode_config.mutex);
937 EXPORT_SYMBOL(drm_initial_config);
940 * drm_mode_config_cleanup - free up DRM mode_config info
944 * Caller must hold mode config lock.
946 * Free up all the outputs and CRTCs associated with this DRM device, then
947 * free up the framebuffers and associated buffer objects.
949 * FIXME: cleanup any dangling user buffer objects too
951 void drm_mode_config_cleanup(struct drm_device *dev)
953 struct drm_output *output, *ot;
954 struct drm_crtc *crtc, *ct;
955 struct drm_framebuffer *fb, *fbt;
956 struct drm_property *property, *pt;
958 list_for_each_entry_safe(output, ot, &dev->mode_config.output_list, head) {
959 drm_output_destroy(output);
962 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, head) {
963 drm_property_destroy(dev, property);
966 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
967 if (fb->bo->type != drm_bo_type_kernel)
968 drm_framebuffer_destroy(fb);
970 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
973 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
974 drm_crtc_destroy(crtc);
978 EXPORT_SYMBOL(drm_mode_config_cleanup);
981 * drm_crtc_set_config - set a new config from userspace
982 * @crtc: CRTC to setup
983 * @crtc_info: user provided configuration
984 * @new_mode: new mode to set
985 * @output_set: set of outputs for the new config
986 * @fb: new framebuffer
989 * Caller must hold mode config lock.
991 * Setup a new configuration, provided by the user in @crtc_info, and enable
997 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)
999 struct drm_device *dev = crtc->dev;
1000 struct drm_crtc **save_crtcs, *new_crtc;
1001 bool save_enabled = crtc->enabled;
1003 struct drm_output *output;
1006 save_crtcs = kzalloc(dev->mode_config.num_crtc * sizeof(struct drm_crtc *), GFP_KERNEL);
1013 if (crtc_info->x != crtc->x || crtc_info->y != crtc->y)
1016 if (new_mode && (crtc->mode.mode_id != new_mode->mode_id))
1019 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1020 save_crtcs[count++] = output->crtc;
1022 if (output->crtc == crtc)
1025 new_crtc = output->crtc;
1027 for (ro = 0; ro < crtc_info->count_outputs; ro++) {
1028 if (output_set[ro] == output)
1031 if (new_crtc != output->crtc) {
1033 output->crtc = new_crtc;
1039 crtc->enabled = (new_mode != NULL);
1040 if (new_mode != NULL) {
1041 DRM_DEBUG("attempting to set mode from userspace\n");
1042 drm_mode_debug_printmodeline(dev, new_mode);
1043 if (!drm_crtc_set_mode(crtc, new_mode, crtc_info->x,
1045 crtc->enabled = save_enabled;
1047 list_for_each_entry(output, &dev->mode_config.output_list, head)
1048 output->crtc = save_crtcs[count++];
1052 crtc->desired_x = crtc_info->x;
1053 crtc->desired_y = crtc_info->y;
1054 crtc->desired_mode = new_mode;
1056 drm_disable_unused_functions(dev);
1063 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1064 * @out: drm_mode_modeinfo struct to return to the user
1065 * @in: drm_display_mode to use
1070 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1073 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, struct drm_display_mode *in)
1075 out->clock = in->clock;
1076 out->hdisplay = in->hdisplay;
1077 out->hsync_start = in->hsync_start;
1078 out->hsync_end = in->hsync_end;
1079 out->htotal = in->htotal;
1080 out->hskew = in->hskew;
1081 out->vdisplay = in->vdisplay;
1082 out->vsync_start = in->vsync_start;
1083 out->vsync_end = in->vsync_end;
1084 out->vtotal = in->vtotal;
1085 out->vscan = in->vscan;
1086 out->vrefresh = in->vrefresh;
1087 out->flags = in->flags;
1088 out->type = in->type;
1089 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1090 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1094 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1095 * @out: drm_display_mode to return to the user
1096 * @in: drm_mode_modeinfo to use
1101 * Convert a drmo_mode_modeinfo into a drm_display_mode structure to return to
1104 void drm_crtc_convert_umode(struct drm_display_mode *out, struct drm_mode_modeinfo *in)
1106 out->clock = in->clock;
1107 out->hdisplay = in->hdisplay;
1108 out->hsync_start = in->hsync_start;
1109 out->hsync_end = in->hsync_end;
1110 out->htotal = in->htotal;
1111 out->hskew = in->hskew;
1112 out->vdisplay = in->vdisplay;
1113 out->vsync_start = in->vsync_start;
1114 out->vsync_end = in->vsync_end;
1115 out->vtotal = in->vtotal;
1116 out->vscan = in->vscan;
1117 out->vrefresh = in->vrefresh;
1118 out->flags = in->flags;
1119 out->type = in->type;
1120 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1121 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1125 * drm_mode_getresources - get graphics configuration
1126 * @inode: inode from the ioctl
1127 * @filp: file * from the ioctl
1128 * @cmd: cmd from ioctl
1129 * @arg: arg from ioctl
1132 * Takes mode config lock.
1134 * Construct a set of configuration description structures and return
1135 * them to the user, including CRTC, output and framebuffer configuration.
1137 * Called by the user via ioctl.
1140 * Zero on success, errno on failure.
1142 int drm_mode_getresources(struct drm_device *dev,
1143 void *data, struct drm_file *file_priv)
1145 struct drm_mode_card_res *card_res = data;
1146 struct list_head *lh;
1147 struct drm_framebuffer *fb;
1148 struct drm_output *output;
1149 struct drm_crtc *crtc;
1151 int output_count = 0;
1156 mutex_lock(&dev->mode_config.mutex);
1158 list_for_each(lh, &dev->mode_config.fb_list)
1161 list_for_each(lh, &dev->mode_config.crtc_list)
1164 list_for_each(lh, &dev->mode_config.output_list)
1167 /* handle this in 4 parts */
1169 if (card_res->count_fbs >= fb_count) {
1171 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
1172 if (put_user(fb->id, card_res->fb_id + copied)) {
1179 card_res->count_fbs = fb_count;
1182 if (card_res->count_crtcs >= crtc_count) {
1184 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head){
1185 DRM_DEBUG("CRTC ID is %d\n", crtc->id);
1186 if (put_user(crtc->id, card_res->crtc_id + copied)) {
1193 card_res->count_crtcs = crtc_count;
1197 if (card_res->count_outputs >= output_count) {
1199 list_for_each_entry(output, &dev->mode_config.output_list,
1201 DRM_DEBUG("OUTPUT ID is %d\n", output->id);
1202 if (put_user(output->id, card_res->output_id + copied)) {
1209 card_res->count_outputs = output_count;
1211 DRM_DEBUG("Counted %d %d\n", card_res->count_crtcs,
1212 card_res->count_outputs);
1216 mutex_unlock(&dev->mode_config.mutex);
1221 * drm_mode_getcrtc - get CRTC configuration
1222 * @inode: inode from the ioctl
1223 * @filp: file * from the ioctl
1224 * @cmd: cmd from ioctl
1225 * @arg: arg from ioctl
1230 * Construct a CRTC configuration structure to return to the user.
1232 * Called by the user via ioctl.
1235 * Zero on success, errno on failure.
1237 int drm_mode_getcrtc(struct drm_device *dev,
1238 void *data, struct drm_file *file_priv)
1240 struct drm_mode_crtc *crtc_resp = data;
1241 struct drm_crtc *crtc;
1242 struct drm_output *output;
1246 mutex_lock(&dev->mode_config.mutex);
1247 crtc = idr_find(&dev->mode_config.crtc_idr, crtc_resp->crtc_id);
1248 if (!crtc || (crtc->id != crtc_resp->crtc_id)) {
1253 crtc_resp->x = crtc->x;
1254 crtc_resp->y = crtc->y;
1257 crtc_resp->fb_id = crtc->fb->id;
1259 crtc_resp->fb_id = 0;
1261 crtc_resp->outputs = 0;
1262 if (crtc->enabled) {
1264 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1265 crtc_resp->mode_valid = 1;
1267 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1268 if (output->crtc == crtc)
1269 crtc_resp->outputs |= 1 << (ocount++);
1273 crtc_resp->mode_valid = 0;
1277 mutex_unlock(&dev->mode_config.mutex);
1282 * drm_mode_getoutput - get output configuration
1283 * @inode: inode from the ioctl
1284 * @filp: file * from the ioctl
1285 * @cmd: cmd from ioctl
1286 * @arg: arg from ioctl
1291 * Construct a output configuration structure to return to the user.
1293 * Called by the user via ioctl.
1296 * Zero on success, errno on failure.
1298 int drm_mode_getoutput(struct drm_device *dev,
1299 void *data, struct drm_file *file_priv)
1301 struct drm_mode_get_output *out_resp = data;
1302 struct drm_output *output;
1303 struct drm_display_mode *mode;
1305 int props_count = 0;
1309 struct drm_mode_modeinfo u_mode;
1311 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1313 DRM_DEBUG("output id %d:\n", out_resp->output);
1315 mutex_lock(&dev->mode_config.mutex);
1316 output= idr_find(&dev->mode_config.crtc_idr, out_resp->output);
1317 if (!output || (output->id != out_resp->output)) {
1322 list_for_each_entry(mode, &output->modes, head)
1325 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1326 if (output->property_ids[i] != 0) {
1331 if (out_resp->count_modes == 0) {
1332 drm_crtc_probe_single_output_modes(output, dev->mode_config.max_width, dev->mode_config.max_height);
1335 strncpy(out_resp->name, output->name, DRM_OUTPUT_NAME_LEN);
1336 out_resp->name[DRM_OUTPUT_NAME_LEN-1] = 0;
1338 out_resp->mm_width = output->mm_width;
1339 out_resp->mm_height = output->mm_height;
1340 out_resp->subpixel = output->subpixel_order;
1341 out_resp->connection = output->status;
1343 out_resp->crtc = output->crtc->id;
1347 out_resp->crtcs = output->possible_crtcs;
1348 out_resp->clones = output->possible_clones;
1350 if ((out_resp->count_modes >= mode_count) && mode_count) {
1352 list_for_each_entry(mode, &output->modes, head) {
1353 drm_crtc_convert_to_umode(&u_mode, mode);
1354 if (copy_to_user(out_resp->modes + copied,
1355 &u_mode, sizeof(u_mode))) {
1363 out_resp->count_modes = mode_count;
1365 if ((out_resp->count_props >= props_count) && props_count) {
1367 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1368 if (output->property_ids[i] != 0) {
1369 if (put_user(output->property_ids[i], out_resp->props + copied)) {
1374 if (put_user(output->property_values[i], out_resp->prop_values + copied)) {
1382 out_resp->count_props = props_count;
1385 mutex_unlock(&dev->mode_config.mutex);
1390 * drm_mode_setcrtc - set CRTC configuration
1391 * @inode: inode from the ioctl
1392 * @filp: file * from the ioctl
1393 * @cmd: cmd from ioctl
1394 * @arg: arg from ioctl
1399 * Build a new CRTC configuration based on user request.
1401 * Called by the user via ioctl.
1404 * Zero on success, errno on failure.
1406 int drm_mode_setcrtc(struct drm_device *dev,
1407 void *data, struct drm_file *file_priv)
1409 struct drm_mode_crtc *crtc_req = data;
1410 struct drm_crtc *crtc;
1411 struct drm_output **output_set = NULL, *output;
1412 struct drm_framebuffer *fb = NULL;
1413 struct drm_display_mode mode;
1418 mutex_lock(&dev->mode_config.mutex);
1419 crtc = idr_find(&dev->mode_config.crtc_idr, crtc_req->crtc_id);
1420 if (!crtc || (crtc->id != crtc_req->crtc_id)) {
1421 DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1426 if (crtc_req->mode_valid) {
1427 /* if we have a mode we need a framebuffer */
1428 if (crtc_req->fb_id) {
1429 fb = idr_find(&dev->mode_config.crtc_idr, crtc_req->fb_id);
1430 if (!fb || (fb->id != crtc_req->fb_id)) {
1431 DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id);
1438 drm_crtc_convert_umode(&mode, &crtc_req->mode);
1442 if (crtc_req->count_outputs == 0 && mode_valid) {
1443 DRM_DEBUG("Count outputs is 0 but mode set\n");
1448 if (crtc_req->count_outputs > 0 && !mode_valid && !fb) {
1449 DRM_DEBUG("Count outputs is %d but no mode or fb set\n", crtc_req->count_outputs);
1454 if (crtc_req->count_outputs > 0) {
1456 output_set = kmalloc(crtc_req->count_outputs *
1457 sizeof(struct drm_output *), GFP_KERNEL);
1463 for (i = 0; i < crtc_req->count_outputs; i++) {
1464 if (get_user(out_id, &crtc_req->set_outputs[i])) {
1469 output = idr_find(&dev->mode_config.crtc_idr, out_id);
1470 if (!output || (out_id != output->id)) {
1471 DRM_DEBUG("Output id %d unknown\n", out_id);
1476 output_set[i] = output;
1481 ret = drm_crtc_set_config(crtc, crtc_req, &mode, output_set, fb);
1483 ret = drm_crtc_set_config(crtc, crtc_req, NULL, output_set, fb);
1487 mutex_unlock(&dev->mode_config.mutex);
1492 * drm_mode_addfb - add an FB to the graphics configuration
1493 * @inode: inode from the ioctl
1494 * @filp: file * from the ioctl
1495 * @cmd: cmd from ioctl
1496 * @arg: arg from ioctl
1499 * Takes mode config lock.
1501 * Add a new FB to the specified CRTC, given a user request.
1503 * Called by the user via ioctl.
1506 * Zero on success, errno on failure.
1508 int drm_mode_addfb(struct drm_device *dev,
1509 void *data, struct drm_file *file_priv)
1511 struct drm_mode_fb_cmd *r = data;
1512 struct drm_mode_config *config = &dev->mode_config;
1513 struct drm_framebuffer *fb;
1514 struct drm_buffer_object *bo;
1515 struct drm_crtc *crtc;
1518 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1519 DRM_ERROR("mode new framebuffer width not within limits\n");
1522 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1523 DRM_ERROR("mode new framebuffer height not within limits\n");
1527 mutex_lock(&dev->mode_config.mutex);
1528 /* TODO check limits are okay */
1529 ret = drm_get_buffer_object(dev, &bo, r->handle);
1535 /* TODO check buffer is sufficently large */
1536 /* TODO setup destructor callback */
1538 fb = drm_framebuffer_create(dev);
1544 fb->width = r->width;
1545 fb->height = r->height;
1546 fb->pitch = r->pitch;
1547 fb->bits_per_pixel = r->bpp;
1548 fb->depth = r->depth;
1549 fb->offset = bo->offset;
1552 r->buffer_id = fb->id;
1554 list_add(&fb->filp_head, &file_priv->fbs);
1556 /* FIXME: bind the fb to the right crtc */
1557 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1559 dev->driver->fb_probe(dev, crtc);
1563 mutex_unlock(&dev->mode_config.mutex);
1568 * drm_mode_rmfb - remove an FB from the configuration
1569 * @inode: inode from the ioctl
1570 * @filp: file * from the ioctl
1571 * @cmd: cmd from ioctl
1572 * @arg: arg from ioctl
1575 * Takes mode config lock.
1577 * Remove the FB specified by the user.
1579 * Called by the user via ioctl.
1582 * Zero on success, errno on failure.
1584 int drm_mode_rmfb(struct drm_device *dev,
1585 void *data, struct drm_file *file_priv)
1587 struct drm_framebuffer *fb = 0;
1588 uint32_t *id = data;
1591 mutex_lock(&dev->mode_config.mutex);
1592 fb = idr_find(&dev->mode_config.crtc_idr, *id);
1593 /* TODO check that we realy get a framebuffer back. */
1594 if (!fb || (*id != fb->id)) {
1595 DRM_ERROR("mode invalid framebuffer id\n");
1600 /* TODO check if we own the buffer */
1601 /* TODO release all crtc connected to the framebuffer */
1602 /* bind the fb to the crtc for now */
1603 /* TODO unhock the destructor from the buffer object */
1605 if (fb->bo->type != drm_bo_type_kernel)
1606 drm_framebuffer_destroy(fb);
1608 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
1611 mutex_unlock(&dev->mode_config.mutex);
1616 * drm_mode_getfb - get FB info
1617 * @inode: inode from the ioctl
1618 * @filp: file * from the ioctl
1619 * @cmd: cmd from ioctl
1620 * @arg: arg from ioctl
1625 * Lookup the FB given its ID and return info about it.
1627 * Called by the user via ioctl.
1630 * Zero on success, errno on failure.
1632 int drm_mode_getfb(struct drm_device *dev,
1633 void *data, struct drm_file *file_priv)
1635 struct drm_mode_fb_cmd *r = data;
1636 struct drm_framebuffer *fb;
1639 mutex_lock(&dev->mode_config.mutex);
1640 fb = idr_find(&dev->mode_config.crtc_idr, r->buffer_id);
1641 if (!fb || (r->buffer_id != fb->id)) {
1642 DRM_ERROR("invalid framebuffer id\n");
1647 r->height = fb->height;
1648 r->width = fb->width;
1649 r->depth = fb->depth;
1650 r->bpp = fb->bits_per_pixel;
1651 r->handle = fb->bo->base.hash.key;
1652 r->pitch = fb->pitch;
1655 mutex_unlock(&dev->mode_config.mutex);
1660 * drm_fb_release - remove and free the FBs on this file
1661 * @filp: file * from the ioctl
1664 * Takes mode config lock.
1666 * Destroy all the FBs associated with @filp.
1668 * Called by the user via ioctl.
1671 * Zero on success, errno on failure.
1673 void drm_fb_release(struct file *filp)
1675 struct drm_file *priv = filp->private_data;
1676 struct drm_device *dev = priv->head->dev;
1677 struct drm_framebuffer *fb, *tfb;
1679 mutex_lock(&dev->mode_config.mutex);
1680 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1681 list_del(&fb->filp_head);
1682 if (fb->bo->type != drm_bo_type_kernel)
1683 drm_framebuffer_destroy(fb);
1685 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
1687 mutex_unlock(&dev->mode_config.mutex);
1694 static int drm_mode_attachmode(struct drm_device *dev,
1695 struct drm_output *output,
1696 struct drm_display_mode *mode)
1700 list_add_tail(&mode->head, &output->user_modes);
1704 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1705 struct drm_display_mode *mode)
1707 struct drm_output *output;
1709 struct drm_display_mode *dup_mode;
1711 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1712 if (output->crtc == crtc) {
1714 dup_mode = drm_mode_duplicate(dev, mode);
1717 ret = drm_mode_attachmode(dev, output, dup_mode);
1725 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1727 static int drm_mode_detachmode(struct drm_device *dev,
1728 struct drm_output *output,
1729 struct drm_display_mode *mode)
1733 struct drm_display_mode *match_mode, *t;
1735 list_for_each_entry_safe(match_mode, t, &output->user_modes, head) {
1736 if (drm_mode_equal(match_mode, mode)) {
1737 list_del(&match_mode->head);
1738 drm_mode_destroy(dev, match_mode);
1750 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1752 struct drm_output *output;
1754 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1755 drm_mode_detachmode(dev, output, mode);
1759 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1762 * drm_fb_attachmode - Attach a user mode to an output
1763 * @inode: inode from the ioctl
1764 * @filp: file * from the ioctl
1765 * @cmd: cmd from ioctl
1766 * @arg: arg from ioctl
1768 * This attaches a user specified mode to an output.
1769 * Called by the user via ioctl.
1772 * Zero on success, errno on failure.
1774 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1775 void *data, struct drm_file *file_priv)
1777 struct drm_mode_mode_cmd *mode_cmd = data;
1778 struct drm_output *output;
1779 struct drm_display_mode *mode;
1780 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1783 mutex_lock(&dev->mode_config.mutex);
1785 output = idr_find(&dev->mode_config.crtc_idr, mode_cmd->output_id);
1786 if (!output || (output->id != mode_cmd->output_id)) {
1791 mode = drm_mode_create(dev);
1797 drm_crtc_convert_umode(mode, umode);
1799 ret = drm_mode_attachmode(dev, output, mode);
1801 mutex_unlock(&dev->mode_config.mutex);
1807 * drm_fb_detachmode - Detach a user specified mode from an output
1808 * @inode: inode from the ioctl
1809 * @filp: file * from the ioctl
1810 * @cmd: cmd from ioctl
1811 * @arg: arg from ioctl
1813 * Called by the user via ioctl.
1816 * Zero on success, errno on failure.
1818 int drm_mode_detachmode_ioctl(struct drm_device *dev,
1819 void *data, struct drm_file *file_priv)
1821 struct drm_mode_mode_cmd *mode_cmd = data;
1822 struct drm_output *output;
1823 struct drm_display_mode mode;
1824 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1827 mutex_lock(&dev->mode_config.mutex);
1829 output = idr_find(&dev->mode_config.crtc_idr, mode_cmd->output_id);
1830 if (!output || (output->id != mode_cmd->output_id)) {
1835 drm_crtc_convert_umode(&mode, umode);
1836 ret = drm_mode_detachmode(dev, output, &mode);
1838 mutex_unlock(&dev->mode_config.mutex);
1842 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
1843 const char *name, int num_values)
1845 struct drm_property *property = NULL;
1847 property = kzalloc(sizeof(struct drm_output), GFP_KERNEL);
1851 property->values = kzalloc(sizeof(uint32_t)*num_values, GFP_KERNEL);
1852 if (!property->values)
1855 property->id = drm_idr_get(dev, property);
1856 property->flags = flags;
1857 property->num_values = num_values;
1858 INIT_LIST_HEAD(&property->enum_list);
1861 strncpy(property->name, name, DRM_PROP_NAME_LEN);
1863 list_add_tail(&property->head, &dev->mode_config.property_list);
1869 EXPORT_SYMBOL(drm_property_create);
1871 int drm_property_add_enum(struct drm_property *property, int index,
1872 uint32_t value, const char *name)
1874 struct drm_property_enum *prop_enum;
1876 if (!(property->flags & DRM_MODE_PROP_ENUM))
1879 if (!list_empty(&property->enum_list)) {
1880 list_for_each_entry(prop_enum, &property->enum_list, head) {
1881 if (prop_enum->value == value) {
1882 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1883 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1889 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
1893 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
1894 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
1895 prop_enum->value = value;
1897 property->values[index] = value;
1898 list_add_tail(&prop_enum->head, &property->enum_list);
1901 EXPORT_SYMBOL(drm_property_add_enum);
1903 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
1905 struct drm_property_enum *prop_enum, *pt;
1907 list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
1908 list_del(&prop_enum->head);
1912 kfree(property->values);
1913 drm_idr_put(dev, property->id);
1914 list_del(&property->head);
1917 EXPORT_SYMBOL(drm_property_destroy);
1920 int drm_output_attach_property(struct drm_output *output,
1921 struct drm_property *property, int init_val)
1925 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1926 if (output->property_ids[i] == 0) {
1927 output->property_ids[i] = property->id;
1928 output->property_values[i] = init_val;
1933 if (i == DRM_OUTPUT_MAX_PROPERTY)
1937 EXPORT_SYMBOL(drm_output_attach_property);
1939 int drm_mode_getproperty_ioctl(struct drm_device *dev,
1940 void *data, struct drm_file *file_priv)
1942 struct drm_mode_get_property *out_resp = data;
1943 struct drm_property *property;
1945 int value_count = 0;
1948 struct drm_property_enum *prop_enum;
1950 mutex_lock(&dev->mode_config.mutex);
1951 property = idr_find(&dev->mode_config.crtc_idr, out_resp->prop_id);
1952 if (!property || (property->id != out_resp->prop_id)) {
1958 list_for_each_entry(prop_enum, &property->enum_list, head)
1961 value_count = property->num_values;
1963 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
1964 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
1965 out_resp->flags = property->flags;
1967 if ((out_resp->count_values >= value_count) && value_count) {
1968 for (i = 0; i < value_count; i++) {
1969 if (put_user(property->values[i], out_resp->values + i)) {
1975 out_resp->count_values = value_count;
1977 if ((out_resp->count_enums >= enum_count) && enum_count) {
1979 list_for_each_entry(prop_enum, &property->enum_list, head) {
1980 if (put_user(prop_enum->value, &out_resp->enums[copied].value)) {
1985 if (copy_to_user(&out_resp->enums[copied].name,
1986 prop_enum->name, DRM_PROP_NAME_LEN)) {
1993 out_resp->count_enums = enum_count;
1996 mutex_unlock(&dev->mode_config.mutex);