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(drm_device_t *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 drm_device_t *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(drm_device_t *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 drm_device_t *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 drm_device_t *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_output_modes(struct drm_device *dev, int maxX, int maxY)
285 struct drm_output *output;
286 struct drm_display_mode *mode, *t;
288 //if (maxX == 0 || maxY == 0)
291 list_for_each_entry(output, &dev->mode_config.output_list, head) {
293 /* set all modes to the unverified state */
294 list_for_each_entry_safe(mode, t, &output->modes, head)
295 mode->status = MODE_UNVERIFIED;
297 output->status = (*output->funcs->detect)(output);
299 if (output->status == output_status_disconnected) {
300 DRM_DEBUG("%s is disconnected\n", output->name);
301 /* TODO set EDID to NULL */
305 ret = (*output->funcs->get_modes)(output);
308 drm_mode_output_list_update(output);
312 drm_mode_validate_size(dev, &output->modes, maxX,
314 list_for_each_entry_safe(mode, t, &output->modes, head) {
315 if (mode->status == MODE_OK)
316 mode->status = (*output->funcs->mode_valid)(output,mode);
320 drm_mode_prune_invalid(dev, &output->modes, TRUE);
322 if (list_empty(&output->modes)) {
323 struct drm_display_mode *stdmode;
325 DRM_DEBUG("No valid modes on %s\n", output->name);
327 /* Should we do this here ???
328 * When no valid EDID modes are available we end up
329 * here and bailed in the past, now we add a standard
330 * 640x480@60Hz mode and carry on.
332 stdmode = drm_mode_duplicate(dev, &std_mode[0]);
333 drm_mode_probed_add(output, stdmode);
334 drm_mode_list_concat(&output->probed_modes,
337 DRM_DEBUG("Adding standard 640x480 @ 60Hz to %s\n",
341 drm_mode_sort(&output->modes);
343 DRM_DEBUG("Probed modes for %s\n", output->name);
344 list_for_each_entry_safe(mode, t, &output->modes, head) {
345 mode->vrefresh = drm_mode_vrefresh(mode);
347 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
348 drm_mode_debug_printmodeline(dev, mode);
354 * drm_crtc_set_mode - set a mode
355 * @crtc: CRTC to program
361 * Caller must hold mode config lock.
363 * Try to set @mode on @crtc. Give @crtc and its associated outputs a chance
364 * to fixup or reject the mode prior to trying to set it.
367 * True if the mode was set successfully, or false otherwise.
369 bool drm_crtc_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
372 drm_device_t *dev = crtc->dev;
373 struct drm_display_mode *adjusted_mode, saved_mode;
374 int saved_x, saved_y;
375 bool didLock = false;
377 struct drm_output *output;
379 adjusted_mode = drm_mode_duplicate(dev, mode);
381 crtc->enabled = drm_crtc_in_use(crtc);
383 if (!crtc->enabled) {
387 didLock = crtc->funcs->lock(crtc);
389 saved_mode = crtc->mode;
393 /* Update crtc values up front so the driver can rely on them for mode
400 /* XXX short-circuit changes to base location only */
402 /* Pass our mode to the outputs and the CRTC to give them a chance to
403 * adjust it according to limitations or output properties, and also
404 * a chance to reject the mode entirely.
406 list_for_each_entry(output, &dev->mode_config.output_list, head) {
408 if (output->crtc != crtc)
411 if (!output->funcs->mode_fixup(output, mode, adjusted_mode)) {
416 if (!crtc->funcs->mode_fixup(crtc, mode, adjusted_mode)) {
420 /* Prepare the outputs and CRTCs before setting the mode. */
421 list_for_each_entry(output, &dev->mode_config.output_list, head) {
423 if (output->crtc != crtc)
426 /* Disable the output as the first thing we do. */
427 output->funcs->prepare(output);
430 crtc->funcs->prepare(crtc);
432 /* Set up the DPLL and any output state that needs to adjust or depend
435 crtc->funcs->mode_set(crtc, mode, adjusted_mode, x, y);
436 list_for_each_entry(output, &dev->mode_config.output_list, head) {
437 if (output->crtc == crtc) {
438 dev_warn(&output->dev->pdev->dev, "%s: set mode %s\n",
439 output->name, mode->name);
440 output->funcs->mode_set(output, mode, adjusted_mode);
444 /* Now, enable the clocks, plane, pipe, and outputs that we set up. */
445 crtc->funcs->commit(crtc);
446 list_for_each_entry(output, &dev->mode_config.output_list, head) {
447 if (output->crtc == crtc) {
448 output->funcs->commit(output);
449 #if 0 // TODO def RANDR_12_INTERFACE
450 if (output->randr_output)
451 RRPostPendingProperties (output->randr_output);
456 /* XXX free adjustedmode */
457 drm_mode_destroy(dev, adjusted_mode);
460 // if (scrn->pScreen)
461 // drm_crtc_set_screen_sub_pixel_order(dev);
467 crtc->mode = saved_mode;
471 crtc->funcs->unlock (crtc);
475 EXPORT_SYMBOL(drm_crtc_set_mode);
478 * drm_disable_unused_functions - disable unused objects
482 * Caller must hold mode config lock.
484 * If an output or CRTC isn't part of @dev's mode_config, it can be disabled
485 * by calling its dpms function, which should power it off.
487 void drm_disable_unused_functions(struct drm_device *dev)
489 struct drm_output *output;
490 struct drm_crtc *crtc;
492 list_for_each_entry(output, &dev->mode_config.output_list, head) {
494 (*output->funcs->dpms)(output, DPMSModeOff);
497 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
499 crtc->funcs->dpms(crtc, DPMSModeOff);
504 * drm_mode_probed_add - add a mode to the specified output's probed mode list
505 * @output: output the new mode
509 * Caller must hold mode config lock.
511 * Add @mode to @output's mode list for later use.
513 void drm_mode_probed_add(struct drm_output *output,
514 struct drm_display_mode *mode)
516 list_add(&mode->head, &output->probed_modes);
518 EXPORT_SYMBOL(drm_mode_probed_add);
521 * drm_mode_remove - remove and free a mode
522 * @output: output list to modify
523 * @mode: mode to remove
526 * Caller must hold mode config lock.
528 * Remove @mode from @output's mode list, then free it.
530 void drm_mode_remove(struct drm_output *output, struct drm_display_mode *mode)
532 list_del(&mode->head);
535 EXPORT_SYMBOL(drm_mode_remove);
538 * drm_output_create - create a new output
540 * @funcs: callbacks for this output
541 * @name: user visible name of the output
544 * Caller must hold @dev's mode_config lock.
546 * Creates a new drm_output structure and adds it to @dev's mode_config
550 * Pointer to the new output or NULL on error.
552 struct drm_output *drm_output_create(drm_device_t *dev,
553 const struct drm_output_funcs *funcs,
556 struct drm_output *output = NULL;
558 output = kzalloc(sizeof(struct drm_output), GFP_KERNEL);
563 output->funcs = funcs;
564 output->id = drm_idr_get(dev, output);
566 strncpy(output->name, name, DRM_OUTPUT_LEN);
567 output->name[DRM_OUTPUT_LEN - 1] = 0;
568 output->subpixel_order = SubPixelUnknown;
569 INIT_LIST_HEAD(&output->probed_modes);
570 INIT_LIST_HEAD(&output->modes);
572 /* output_set_monitor(output)? */
573 /* check for output_ignored(output)? */
575 mutex_lock(&dev->mode_config.mutex);
576 list_add_tail(&output->head, &dev->mode_config.output_list);
577 dev->mode_config.num_output++;
579 mutex_unlock(&dev->mode_config.mutex);
584 EXPORT_SYMBOL(drm_output_create);
587 * drm_output_destroy - remove an output
588 * @output: output to remove
591 * Caller must hold @dev's mode_config lock.
593 * Call @output's cleanup function, then remove the output from the DRM
594 * mode_config after freeing @output's modes.
596 void drm_output_destroy(struct drm_output *output)
598 struct drm_device *dev = output->dev;
599 struct drm_display_mode *mode, *t;
601 if (*output->funcs->cleanup)
602 (*output->funcs->cleanup)(output);
604 list_for_each_entry_safe(mode, t, &output->probed_modes, head)
605 drm_mode_remove(output, mode);
607 list_for_each_entry_safe(mode, t, &output->modes, head)
608 drm_mode_remove(output, mode);
610 mutex_lock(&dev->mode_config.mutex);
611 drm_idr_put(dev, output->id);
612 list_del(&output->head);
613 mutex_unlock(&dev->mode_config.mutex);
616 EXPORT_SYMBOL(drm_output_destroy);
619 * drm_output_rename - rename an output
620 * @output: output to rename
621 * @name: new user visible name
626 * Simply stuff a new name into @output's name field, based on @name.
629 * True if the name was changed, false otherwise.
631 bool drm_output_rename(struct drm_output *output, const char *name)
636 strncpy(output->name, name, DRM_OUTPUT_LEN);
637 output->name[DRM_OUTPUT_LEN - 1] = 0;
639 DRM_DEBUG("Changed name to %s\n", output->name);
640 // drm_output_set_monitor(output);
641 // if (drm_output_ignored(output))
646 EXPORT_SYMBOL(drm_output_rename);
649 * drm_mode_create - create a new display mode
655 * Create a new drm_display_mode, give it an ID, and return it.
658 * Pointer to new mode on success, NULL on error.
660 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
662 struct drm_display_mode *nmode;
664 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
668 nmode->mode_id = drm_idr_get(dev, nmode);
671 EXPORT_SYMBOL(drm_mode_create);
674 * drm_mode_destroy - remove a mode
676 * @mode: mode to remove
679 * Caller must hold mode config lock.
681 * Free @mode's unique identifier, then free it.
683 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
685 drm_idr_put(dev, mode->mode_id);
689 EXPORT_SYMBOL(drm_mode_destroy);
692 * drm_mode_config_init - initialize DRM mode_configuration structure
696 * None, should happen single threaded at init time.
698 * Initialize @dev's mode_config structure, used for tracking the graphics
699 * configuration of @dev.
701 void drm_mode_config_init(drm_device_t *dev)
703 mutex_init(&dev->mode_config.mutex);
704 INIT_LIST_HEAD(&dev->mode_config.fb_list);
705 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
706 INIT_LIST_HEAD(&dev->mode_config.output_list);
707 INIT_LIST_HEAD(&dev->mode_config.usermode_list);
708 idr_init(&dev->mode_config.crtc_idr);
710 EXPORT_SYMBOL(drm_mode_config_init);
713 * drm_get_buffer_object - find the buffer object for a given handle
715 * @bo: pointer to caller's buffer_object pointer
716 * @handle: handle to lookup
719 * Must take @dev's struct_mutex to protect buffer object lookup.
721 * Given @handle, lookup the buffer object in @dev and put it in the caller's
725 * Zero on success, -EINVAL if the handle couldn't be found.
727 static int drm_get_buffer_object(drm_device_t *dev, struct drm_buffer_object **bo, unsigned long handle)
729 drm_user_object_t *uo;
730 drm_hash_item_t *hash;
735 mutex_lock(&dev->struct_mutex);
736 ret = drm_ht_find_item(&dev->object_hash, handle, &hash);
738 DRM_ERROR("Couldn't find handle.\n");
743 uo = drm_hash_entry(hash, drm_user_object_t, hash);
744 if (uo->type != drm_buffer_type) {
749 *bo = drm_user_object_entry(uo, drm_buffer_object_t, base);
752 mutex_unlock(&dev->struct_mutex);
757 * drm_pick_crtcs - pick crtcs for output devices
761 * Caller must hold mode config lock.
763 static void drm_pick_crtcs (drm_device_t *dev)
766 struct drm_output *output, *output_equal;
767 struct drm_crtc *crtc;
768 struct drm_display_mode *des_mode = NULL, *modes, *modes_equal;
770 list_for_each_entry(output, &dev->mode_config.output_list, head) {
773 /* Don't hook up outputs that are disconnected ??
775 * This is debateable. Do we want fixed /dev/fbX or
776 * dynamic on hotplug (need mode code for that though) ?
778 * If we don't hook up outputs now, then we only create
779 * /dev/fbX for the output that's enabled, that's good as
780 * the users console will be on that output.
782 * If we do hook up outputs that are disconnected now, then
783 * the user may end up having to muck about with the fbcon
784 * map flags to assign his console to the enabled output. Ugh.
786 if (output->status != output_status_connected)
790 list_for_each_entry(des_mode, &output->modes, head) {
791 if (des_mode->type & DRM_MODE_TYPE_PREFERRED)
795 /* No preferred mode, let's just select the first available */
796 if (!des_mode || !(des_mode->type & DRM_MODE_TYPE_PREFERRED)) {
797 list_for_each_entry(des_mode, &output->modes, head) {
804 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
806 if ((output->possible_crtcs & (1 << c)) == 0)
809 #if 0 /* should we try and clone ?? - code not tested - FIXME */
811 list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
813 if (output->id == output_equal->id)
816 list_for_each_entry(modes, &output->modes, head) {
817 list_for_each_entry(modes_equal, &output_equal->modes, head) {
818 if (drm_mode_equal (modes, modes_equal)) {
819 if ((output->possible_clones & (1 << o))) {
829 /* Found a CRTC to attach to, do it ! */
831 output->crtc->desired_mode = des_mode;
832 output->initial_x = 0;
833 output->initial_y = 0;
834 DRM_DEBUG("Desired mode for CRTC %d is %s\n",c,des_mode->name);
842 * drm_initial_config - setup a sane initial output configuration
844 * @can_grow: this configuration is growable
847 * Called at init time, must take mode config lock.
849 * Scan the CRTCs and outputs and try to put together an initial setup.
850 * At the moment, this is a cloned configuration across all heads with
851 * a new framebuffer object as the backing store.
854 * Zero if everything went ok, nonzero otherwise.
856 bool drm_initial_config(drm_device_t *dev, bool can_grow)
858 struct drm_output *output;
861 mutex_lock(&dev->mode_config.mutex);
863 drm_crtc_probe_output_modes(dev, 2048, 2048);
867 list_for_each_entry(output, &dev->mode_config.output_list, head) {
869 /* can't setup the output if there's no assigned crtc or mode */
870 if (!output->crtc || !output->crtc->desired_mode)
873 dev->driver->fb_probe(dev, output->crtc);
875 drm_disable_unused_functions(dev);
877 mutex_unlock(&dev->mode_config.mutex);
880 EXPORT_SYMBOL(drm_initial_config);
883 * drm_mode_config_cleanup - free up DRM mode_config info
887 * Caller must hold mode config lock.
889 * Free up all the outputs and CRTCs associated with this DRM device, then
890 * free up the framebuffers and associated buffer objects.
892 * FIXME: cleanup any dangling user buffer objects too
894 void drm_mode_config_cleanup(drm_device_t *dev)
896 struct drm_output *output, *ot;
897 struct drm_crtc *crtc, *ct;
898 struct drm_framebuffer *fb, *fbt;
899 struct drm_display_mode *mode, *mt;
900 list_for_each_entry_safe(output, ot, &dev->mode_config.output_list, head) {
901 drm_output_destroy(output);
904 list_for_each_entry_safe(mode, mt, &dev->mode_config.usermode_list, head) {
905 drm_mode_destroy(dev, mode);
908 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
909 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
910 /* If this FB was the kernel one, free it */
911 if (fb->bo->type == drm_bo_type_kernel) {
912 mutex_lock(&dev->struct_mutex);
913 drm_bo_usage_deref_locked(&fb->bo);
914 mutex_unlock(&dev->struct_mutex);
916 drm_framebuffer_destroy(fb);
919 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
920 drm_crtc_destroy(crtc);
924 EXPORT_SYMBOL(drm_mode_config_cleanup);
927 * drm_crtc_set_config - set a new config from userspace
928 * @crtc: CRTC to setup
929 * @crtc_info: user provided configuration
930 * @new_mode: new mode to set
931 * @output_set: set of outputs for the new config
932 * @fb: new framebuffer
935 * Caller must hold mode config lock.
937 * Setup a new configuration, provided by the user in @crtc_info, and enable
943 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)
945 drm_device_t *dev = crtc->dev;
946 struct drm_crtc **save_crtcs, *new_crtc;
947 bool save_enabled = crtc->enabled;
949 struct drm_output *output;
952 save_crtcs = kzalloc(dev->mode_config.num_crtc * sizeof(struct drm_crtc *), GFP_KERNEL);
959 if (crtc_info->x != crtc->x || crtc_info->y != crtc->y)
962 if (new_mode && (crtc->mode.mode_id != new_mode->mode_id))
965 list_for_each_entry(output, &dev->mode_config.output_list, head) {
966 save_crtcs[count++] = output->crtc;
968 if (output->crtc == crtc)
971 new_crtc = output->crtc;
973 for (ro = 0; ro < crtc_info->count_outputs; ro++) {
974 if (output_set[ro] == output)
977 if (new_crtc != output->crtc) {
979 output->crtc = new_crtc;
985 crtc->enabled = (new_mode != NULL);
986 if (new_mode != NULL) {
987 DRM_DEBUG("attempting to set mode from userspace\n");
988 drm_mode_debug_printmodeline(dev, new_mode);
989 if (!drm_crtc_set_mode(crtc, new_mode, crtc_info->x,
991 crtc->enabled = save_enabled;
993 list_for_each_entry(output, &dev->mode_config.output_list, head)
994 output->crtc = save_crtcs[count++];
998 crtc->desired_x = crtc_info->x;
999 crtc->desired_y = crtc_info->y;
1000 crtc->desired_mode = new_mode;
1002 drm_disable_unused_functions(dev);
1009 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1010 * @out: drm_mode_modeinfo struct to return to the user
1011 * @in: drm_display_mode to use
1016 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1019 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, struct drm_display_mode *in)
1022 out->id = in->mode_id;
1023 out->clock = in->clock;
1024 out->hdisplay = in->hdisplay;
1025 out->hsync_start = in->hsync_start;
1026 out->hsync_end = in->hsync_end;
1027 out->htotal = in->htotal;
1028 out->hskew = in->hskew;
1029 out->vdisplay = in->vdisplay;
1030 out->vsync_start = in->vsync_start;
1031 out->vsync_end = in->vsync_end;
1032 out->vtotal = in->vtotal;
1033 out->vscan = in->vscan;
1034 out->vrefresh = in->vrefresh;
1035 out->flags = in->flags;
1036 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1037 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1041 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1042 * @out: drm_display_mode to return to the user
1043 * @in: drm_mode_modeinfo to use
1048 * Convert a drmo_mode_modeinfo into a drm_display_mode structure to return to
1051 void drm_crtc_convert_umode(struct drm_display_mode *out, struct drm_mode_modeinfo *in)
1053 out->clock = in->clock;
1054 out->hdisplay = in->hdisplay;
1055 out->hsync_start = in->hsync_start;
1056 out->hsync_end = in->hsync_end;
1057 out->htotal = in->htotal;
1058 out->hskew = in->hskew;
1059 out->vdisplay = in->vdisplay;
1060 out->vsync_start = in->vsync_start;
1061 out->vsync_end = in->vsync_end;
1062 out->vtotal = in->vtotal;
1063 out->vscan = in->vscan;
1064 out->vrefresh = in->vrefresh;
1065 out->flags = in->flags;
1066 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1067 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1071 * drm_mode_getresources - get graphics configuration
1072 * @inode: inode from the ioctl
1073 * @filp: file * from the ioctl
1074 * @cmd: cmd from ioctl
1075 * @arg: arg from ioctl
1078 * Takes mode config lock.
1080 * Construct a set of configuration description structures and return
1081 * them to the user, including CRTC, output and framebuffer configuration.
1083 * Called by the user via ioctl.
1086 * Zero on success, errno on failure.
1088 int drm_mode_getresources(struct inode *inode, struct file *filp,
1089 unsigned int cmd, unsigned long arg)
1091 drm_file_t *priv = filp->private_data;
1092 drm_device_t *dev = priv->head->dev;
1093 struct drm_mode_card_res __user *argp = (void __user *)arg;
1094 struct drm_mode_card_res card_res;
1095 struct list_head *lh;
1096 struct drm_framebuffer *fb;
1097 struct drm_output *output;
1098 struct drm_crtc *crtc;
1099 struct drm_mode_modeinfo u_mode;
1100 struct drm_display_mode *mode;
1103 int output_count = 0;
1108 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1110 mutex_lock(&dev->mode_config.mutex);
1112 list_for_each(lh, &dev->mode_config.fb_list)
1115 list_for_each(lh, &dev->mode_config.crtc_list)
1118 list_for_each_entry(output, &dev->mode_config.output_list,
1121 list_for_each(lh, &output->modes)
1124 list_for_each(lh, &dev->mode_config.usermode_list)
1127 if (copy_from_user(&card_res, argp, sizeof(card_res))) {
1132 if (card_res.count_modes == 0) {
1133 DRM_DEBUG("probing modes %dx%d\n", dev->mode_config.max_width, dev->mode_config.max_height);
1134 drm_crtc_probe_output_modes(dev, dev->mode_config.max_width, dev->mode_config.max_height);
1136 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1137 list_for_each(lh, &output->modes)
1140 list_for_each(lh, &dev->mode_config.usermode_list)
1144 /* handle this in 4 parts */
1146 if (card_res.count_fbs >= fb_count) {
1148 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
1149 if (put_user(fb->id, &card_res.fb_id[copied++])) {
1155 card_res.count_fbs = fb_count;
1158 if (card_res.count_crtcs >= crtc_count) {
1160 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head){
1161 DRM_DEBUG("CRTC ID is %d\n", crtc->id);
1162 if (put_user(crtc->id, &card_res.crtc_id[copied++])) {
1168 card_res.count_crtcs = crtc_count;
1172 if (card_res.count_outputs >= output_count) {
1174 list_for_each_entry(output, &dev->mode_config.output_list,
1176 DRM_DEBUG("OUTPUT ID is %d\n", output->id);
1177 if (put_user(output->id, &card_res.output_id[copied++])) {
1183 card_res.count_outputs = output_count;
1186 if (card_res.count_modes >= mode_count) {
1188 list_for_each_entry(output, &dev->mode_config.output_list,
1190 list_for_each_entry(mode, &output->modes, head) {
1191 drm_crtc_convert_to_umode(&u_mode, mode);
1192 if (copy_to_user(&card_res.modes[copied++], &u_mode, sizeof(struct drm_mode_modeinfo))) {
1198 /* add in user modes */
1199 list_for_each_entry(mode, &dev->mode_config.usermode_list, head) {
1200 drm_crtc_convert_to_umode(&u_mode, mode);
1201 if (copy_to_user(&card_res.modes[copied++], &u_mode, sizeof(struct drm_mode_modeinfo))) {
1207 card_res.count_modes = mode_count;
1210 DRM_DEBUG("Counted %d %d %d\n", card_res.count_crtcs,
1211 card_res.count_outputs,
1212 card_res.count_modes);
1214 if (copy_to_user(argp, &card_res, sizeof(card_res)))
1218 mutex_unlock(&dev->mode_config.mutex);
1223 * drm_mode_getcrtc - get CRTC configuration
1224 * @inode: inode from the ioctl
1225 * @filp: file * from the ioctl
1226 * @cmd: cmd from ioctl
1227 * @arg: arg from ioctl
1232 * Construct a CRTC configuration structure to return to the user.
1234 * Called by the user via ioctl.
1237 * Zero on success, errno on failure.
1239 int drm_mode_getcrtc(struct inode *inode, struct file *filp,
1240 unsigned int cmd, unsigned long arg)
1242 drm_file_t *priv = filp->private_data;
1243 drm_device_t *dev = priv->head->dev;
1244 struct drm_mode_crtc __user *argp = (void __user *)arg;
1245 struct drm_mode_crtc crtc_resp;
1246 struct drm_crtc *crtc;
1247 struct drm_output *output;
1251 if (copy_from_user(&crtc_resp, argp, sizeof(crtc_resp)))
1254 mutex_lock(&dev->mode_config.mutex);
1255 crtc = idr_find(&dev->mode_config.crtc_idr, crtc_resp.crtc_id);
1256 if (!crtc || (crtc->id != crtc_resp.crtc_id)) {
1261 crtc_resp.x = crtc->x;
1262 crtc_resp.y = crtc->y;
1263 crtc_resp.fb_id = 1;
1265 crtc_resp.outputs = 0;
1266 if (crtc->enabled) {
1268 crtc_resp.mode = crtc->mode.mode_id;
1270 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1271 if (output->crtc == crtc)
1272 crtc_resp.outputs |= 1 << (ocount++);
1278 if (copy_to_user(argp, &crtc_resp, sizeof(crtc_resp)))
1282 mutex_unlock(&dev->mode_config.mutex);
1287 * drm_mode_getoutput - get output configuration
1288 * @inode: inode from the ioctl
1289 * @filp: file * from the ioctl
1290 * @cmd: cmd from ioctl
1291 * @arg: arg from ioctl
1296 * Construct a output configuration structure to return to the user.
1298 * Called by the user via ioctl.
1301 * Zero on success, errno on failure.
1303 int drm_mode_getoutput(struct inode *inode, struct file *filp,
1304 unsigned int cmd, unsigned long arg)
1306 drm_file_t *priv = filp->private_data;
1307 drm_device_t *dev = priv->head->dev;
1308 struct drm_mode_get_output __user *argp = (void __user *)arg;
1309 struct drm_mode_get_output out_resp;
1310 struct drm_output *output;
1311 struct drm_display_mode *mode;
1317 if (copy_from_user(&out_resp, argp, sizeof(out_resp)))
1320 DRM_DEBUG("output id %d:\n", out_resp.output);
1322 mutex_lock(&dev->mode_config.mutex);
1323 output= idr_find(&dev->mode_config.crtc_idr, out_resp.output);
1324 if (!output || (output->id != out_resp.output)) {
1329 list_for_each_entry(mode, &output->modes, head)
1332 for (i = 0; i < DRM_OUTPUT_MAX_UMODES; i++)
1333 if (output->user_mode_ids[i] != 0)
1336 strncpy(out_resp.name, output->name, DRM_OUTPUT_NAME_LEN);
1337 out_resp.name[DRM_OUTPUT_NAME_LEN-1] = 0;
1339 out_resp.mm_width = output->mm_width;
1340 out_resp.mm_height = output->mm_height;
1341 out_resp.subpixel = output->subpixel_order;
1342 out_resp.connection = output->status;
1344 out_resp.crtc = output->crtc->id;
1348 if ((out_resp.count_modes >= mode_count) && mode_count) {
1350 list_for_each_entry(mode, &output->modes, head) {
1351 if (put_user(mode->mode_id, &out_resp.modes[copied++])) {
1356 for (i = 0; i < DRM_OUTPUT_MAX_UMODES; i++) {
1357 if (output->user_mode_ids[i] != 0)
1358 if (put_user(output->user_mode_ids[i], &out_resp.modes[copied++])) {
1365 out_resp.count_modes = mode_count;
1368 if (copy_to_user(argp, &out_resp, sizeof(out_resp)))
1372 mutex_unlock(&dev->mode_config.mutex);
1377 * drm_mode_setcrtc - set CRTC configuration
1378 * @inode: inode from the ioctl
1379 * @filp: file * from the ioctl
1380 * @cmd: cmd from ioctl
1381 * @arg: arg from ioctl
1386 * Build a new CRTC configuration based on user request.
1388 * Called by the user via ioctl.
1391 * Zero on success, errno on failure.
1393 int drm_mode_setcrtc(struct inode *inode, struct file *filp,
1394 unsigned int cmd, unsigned long arg)
1396 drm_file_t *priv = filp->private_data;
1397 drm_device_t *dev = priv->head->dev;
1398 struct drm_mode_crtc __user *argp = (void __user *)arg;
1399 struct drm_mode_crtc crtc_req;
1400 struct drm_crtc *crtc;
1401 struct drm_output **output_set = NULL, *output;
1402 struct drm_display_mode *mode;
1403 struct drm_framebuffer *fb = NULL;
1407 if (copy_from_user(&crtc_req, argp, sizeof(crtc_req)))
1410 mutex_lock(&dev->mode_config.mutex);
1411 crtc = idr_find(&dev->mode_config.crtc_idr, crtc_req.crtc_id);
1412 if (!crtc || (crtc->id != crtc_req.crtc_id)) {
1413 DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req.crtc_id);
1418 if (crtc_req.mode) {
1419 /* if we have a mode we need a framebuffer */
1420 if (crtc_req.fb_id) {
1421 fb = idr_find(&dev->mode_config.crtc_idr, crtc_req.fb_id);
1422 if (!fb || (fb->id != crtc_req.fb_id)) {
1423 DRM_DEBUG("Unknown FB ID%d\n", crtc_req.fb_id);
1428 mode = idr_find(&dev->mode_config.crtc_idr, crtc_req.mode);
1429 if (!mode || (mode->mode_id != crtc_req.mode)) {
1430 struct drm_output *output;
1432 list_for_each_entry(output,
1433 &dev->mode_config.output_list,
1435 list_for_each_entry(mode, &output->modes,
1437 drm_mode_debug_printmodeline(dev,
1442 DRM_DEBUG("Unknown mode id %d, %p\n", crtc_req.mode, mode);
1449 if (crtc_req.count_outputs == 0 && mode) {
1450 DRM_DEBUG("Count outputs is 0 but mode set\n");
1455 if (crtc_req.count_outputs > 0 && !mode && !fb) {
1456 DRM_DEBUG("Count outputs is %d but no mode or fb set\n", crtc_req.count_outputs);
1461 if (crtc_req.count_outputs > 0) {
1463 output_set = kmalloc(crtc_req.count_outputs *
1464 sizeof(struct drm_output *), GFP_KERNEL);
1470 for (i = 0; i < crtc_req.count_outputs; i++) {
1471 if (get_user(out_id, &crtc_req.set_outputs[i])) {
1476 output = idr_find(&dev->mode_config.crtc_idr, out_id);
1477 if (!output || (out_id != output->id)) {
1478 DRM_DEBUG("Output id %d unknown\n", out_id);
1483 output_set[i] = output;
1487 ret = drm_crtc_set_config(crtc, &crtc_req, mode, output_set, fb);
1490 mutex_unlock(&dev->mode_config.mutex);
1495 * drm_mode_addfb - add an FB to the graphics configuration
1496 * @inode: inode from the ioctl
1497 * @filp: file * from the ioctl
1498 * @cmd: cmd from ioctl
1499 * @arg: arg from ioctl
1502 * Takes mode config lock.
1504 * Add a new FB to the specified CRTC, given a user request.
1506 * Called by the user via ioctl.
1509 * Zero on success, errno on failure.
1511 int drm_mode_addfb(struct inode *inode, struct file *filp,
1512 unsigned int cmd, unsigned long arg)
1514 struct drm_file *priv = filp->private_data;
1515 struct drm_device *dev = priv->head->dev;
1516 struct drm_mode_fb_cmd __user *argp = (void __user *)arg;
1517 struct drm_mode_fb_cmd r;
1518 struct drm_mode_config *config = &dev->mode_config;
1519 struct drm_framebuffer *fb;
1520 struct drm_buffer_object *bo;
1521 struct drm_crtc *crtc;
1524 if (copy_from_user(&r, argp, sizeof(r)))
1527 if ((config->min_width > r.width) || (r.width > config->max_width)) {
1528 DRM_ERROR("mode new framebuffer width not within limits\n");
1531 if ((config->min_height > r.height) || (r.height > config->max_height)) {
1532 DRM_ERROR("mode new framebuffer height not within limits\n");
1536 mutex_lock(&dev->mode_config.mutex);
1537 /* TODO check limits are okay */
1538 ret = drm_get_buffer_object(dev, &bo, r.handle);
1544 /* TODO check buffer is sufficently large */
1545 /* TODO setup destructor callback */
1547 fb = drm_framebuffer_create(dev);
1553 fb->width = r.width;
1554 fb->height = r.height;
1555 fb->pitch = r.pitch;
1556 fb->bits_per_pixel = r.bpp;
1557 fb->depth = r.depth;
1558 fb->offset = bo->offset;
1561 r.buffer_id = fb->id;
1563 list_add(&fb->filp_head, &priv->fbs);
1565 if (copy_to_user(argp, &r, sizeof(r))) {
1570 /* FIXME: bind the fb to the right crtc */
1571 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1573 dev->driver->fb_probe(dev, crtc);
1577 mutex_unlock(&dev->mode_config.mutex);
1582 * drm_mode_rmfb - remove an FB from the configuration
1583 * @inode: inode from the ioctl
1584 * @filp: file * from the ioctl
1585 * @cmd: cmd from ioctl
1586 * @arg: arg from ioctl
1589 * Takes mode config lock.
1591 * Remove the FB specified by the user.
1593 * Called by the user via ioctl.
1596 * Zero on success, errno on failure.
1598 int drm_mode_rmfb(struct inode *inode, struct file *filp,
1599 unsigned int cmd, unsigned long arg)
1601 drm_file_t *priv = filp->private_data;
1602 drm_device_t *dev = priv->head->dev;
1603 struct drm_framebuffer *fb = 0;
1607 mutex_lock(&dev->mode_config.mutex);
1608 fb = idr_find(&dev->mode_config.crtc_idr, id);
1609 /* TODO check that we realy get a framebuffer back. */
1610 if (!fb || (id != fb->id)) {
1611 DRM_ERROR("mode invalid framebuffer id\n");
1616 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
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 drm_framebuffer_destroy(fb);
1626 mutex_unlock(&dev->mode_config.mutex);
1631 * drm_mode_getfb - get FB info
1632 * @inode: inode from the ioctl
1633 * @filp: file * from the ioctl
1634 * @cmd: cmd from ioctl
1635 * @arg: arg from ioctl
1640 * Lookup the FB given its ID and return info about it.
1642 * Called by the user via ioctl.
1645 * Zero on success, errno on failure.
1647 int drm_mode_getfb(struct inode *inode, struct file *filp,
1648 unsigned int cmd, unsigned long arg)
1650 drm_file_t *priv = filp->private_data;
1651 drm_device_t *dev = priv->head->dev;
1652 struct drm_mode_fb_cmd __user *argp = (void __user *)arg;
1653 struct drm_mode_fb_cmd r;
1654 struct drm_framebuffer *fb;
1657 if (copy_from_user(&r, argp, sizeof(r)))
1660 mutex_lock(&dev->mode_config.mutex);
1661 fb = idr_find(&dev->mode_config.crtc_idr, r.buffer_id);
1662 if (!fb || (r.buffer_id != fb->id)) {
1663 DRM_ERROR("invalid framebuffer id\n");
1668 r.height = fb->height;
1669 r.width = fb->width;
1670 r.depth = fb->depth;
1671 r.bpp = fb->bits_per_pixel;
1672 r.handle = fb->bo->base.hash.key;
1673 r.pitch = fb->pitch;
1675 if (copy_to_user(argp, &r, sizeof(r)))
1679 mutex_unlock(&dev->mode_config.mutex);
1684 * drm_fb_release - remove and free the FBs on this file
1685 * @filp: file * from the ioctl
1688 * Takes mode config lock.
1690 * Destroy all the FBs associated with @filp.
1692 * Called by the user via ioctl.
1695 * Zero on success, errno on failure.
1697 void drm_fb_release(struct file *filp)
1699 drm_file_t *priv = filp->private_data;
1700 drm_device_t *dev = priv->head->dev;
1701 struct drm_framebuffer *fb, *tfb;
1703 mutex_lock(&dev->mode_config.mutex);
1704 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1705 list_del(&fb->filp_head);
1706 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
1707 drm_framebuffer_destroy(fb);
1709 mutex_unlock(&dev->mode_config.mutex);
1713 * drm_fb_newmode - adds a user defined mode
1714 * @inode: inode from the ioctl
1715 * @filp: file * from the ioctl
1716 * @cmd: cmd from ioctl
1717 * @arg: arg from ioctl
1719 * Adds a user specified mode to the kernel.
1721 * Called by the user via ioctl.
1724 * writes new mode id into arg.
1725 * Zero on success, errno on failure.
1727 int drm_mode_addmode(struct inode *inode, struct file *filp,
1728 unsigned int cmd, unsigned long arg)
1730 drm_file_t *priv = filp->private_data;
1731 drm_device_t *dev = priv->head->dev;
1732 struct drm_mode_modeinfo __user *argp = (void __user *)arg;
1733 struct drm_mode_modeinfo new_mode;
1734 struct drm_display_mode *user_mode;
1737 if (copy_from_user(&new_mode, argp, sizeof(new_mode)))
1740 mutex_lock(&dev->mode_config.mutex);
1741 user_mode = drm_mode_create(dev);
1747 drm_crtc_convert_umode(user_mode, &new_mode);
1748 user_mode->type |= DRM_MODE_TYPE_USERDEF;
1750 user_mode->output_count = 0;
1752 list_add(&user_mode->head, &dev->mode_config.usermode_list);
1754 new_mode.id = user_mode->mode_id;
1755 if (copy_to_user(argp, &new_mode, sizeof(new_mode)))
1759 mutex_unlock(&dev->mode_config.mutex);
1764 * drm_fb_rmmode - removes a user defined mode
1765 * @inode: inode from the ioctl
1766 * @filp: file * from the ioctl
1767 * @cmd: cmd from ioctl
1768 * @arg: arg from ioctl
1770 * Remove the user defined mode specified by the user.
1772 * Called by the user via ioctl
1775 * Zero on success, errno on failure.
1777 int drm_mode_rmmode(struct inode *inode, struct file *filp,
1778 unsigned int cmd, unsigned long arg)
1780 drm_file_t *priv = filp->private_data;
1781 drm_device_t *dev = priv->head->dev;
1783 struct drm_display_mode *mode, *t;
1786 mutex_lock(&dev->mode_config.mutex);
1787 mode = idr_find(&dev->mode_config.crtc_idr, id);
1788 if (!mode || (id != mode->mode_id)) {
1793 if (!(mode->type & DRM_MODE_TYPE_USERDEF)) {
1798 if (mode->output_count) {
1803 list_for_each_entry(t, &dev->mode_config.usermode_list, head) {
1805 list_del(&mode->head);
1806 drm_mode_destroy(dev, mode);
1813 mutex_unlock(&dev->mode_config.mutex);
1818 * drm_fb_attachmode - Attach a user mode to an output
1819 * @inode: inode from the ioctl
1820 * @filp: file * from the ioctl
1821 * @cmd: cmd from ioctl
1822 * @arg: arg from ioctl
1824 * This attaches a user specified mode to an output.
1825 * Called by the user via ioctl.
1828 * Zero on success, errno on failure.
1830 int drm_mode_attachmode(struct inode *inode, struct file *filp,
1831 unsigned int cmd, unsigned long arg)
1833 drm_file_t *priv = filp->private_data;
1834 drm_device_t *dev = priv->head->dev;
1835 struct drm_mode_mode_cmd __user *argp = (void __user *)arg;
1836 struct drm_mode_mode_cmd mode_cmd;
1837 struct drm_output *output;
1838 struct drm_display_mode *mode;
1841 if (copy_from_user(&mode_cmd, argp, sizeof(mode_cmd)))
1844 mutex_lock(&dev->mode_config.mutex);
1846 mode = idr_find(&dev->mode_config.crtc_idr, mode_cmd.mode_id);
1847 if (!mode || (mode->mode_id != mode_cmd.mode_id)) {
1852 output = idr_find(&dev->mode_config.crtc_idr, mode_cmd.output_id);
1853 if (!output || (output->id != mode_cmd.output_id)) {
1858 for (i = 0; i < DRM_OUTPUT_MAX_UMODES; i++) {
1859 if (output->user_mode_ids[i] == 0) {
1860 output->user_mode_ids[i] = mode->mode_id;
1861 mode->output_count++;
1866 if (i == DRM_OUTPUT_MAX_UMODES)
1870 mutex_unlock(&dev->mode_config.mutex);
1876 * drm_fb_detachmode - Detach a user specified mode from an output
1877 * @inode: inode from the ioctl
1878 * @filp: file * from the ioctl
1879 * @cmd: cmd from ioctl
1880 * @arg: arg from ioctl
1882 * Called by the user via ioctl.
1885 * Zero on success, errno on failure.
1887 int drm_mode_detachmode(struct inode *inode, struct file *filp,
1888 unsigned int cmd, unsigned long arg)
1890 drm_file_t *priv = filp->private_data;
1891 drm_device_t *dev = priv->head->dev;
1892 struct drm_mode_mode_cmd __user *argp = (void __user *)arg;
1893 struct drm_mode_mode_cmd mode_cmd;
1894 struct drm_output *output;
1895 struct drm_display_mode *mode;
1896 int i, found = 0, ret = 0;
1898 if (copy_from_user(&mode_cmd, argp, sizeof(mode_cmd)))
1901 mutex_lock(&dev->mode_config.mutex);
1903 mode = idr_find(&dev->mode_config.crtc_idr, mode_cmd.mode_id);
1904 if (!mode || (mode->mode_id != mode_cmd.mode_id)) {
1909 output = idr_find(&dev->mode_config.crtc_idr, mode_cmd.output_id);
1910 if (!output || (output->id != mode_cmd.output_id)) {
1916 for (i = 0; i < DRM_OUTPUT_MAX_UMODES; i++) {
1917 if (output->user_mode_ids[i] == mode->mode_id) {
1918 output->user_mode_ids[i] = 0;
1919 mode->output_count--;
1928 mutex_unlock(&dev->mode_config.mutex);