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>
36 struct drm_prop_enum_list {
44 static struct drm_prop_enum_list drm_dpms_enum_list[] =
45 { { DPMSModeOn, "On" },
46 { DPMSModeStandby, "Standby" },
47 { DPMSModeSuspend, "Suspend" },
48 { DPMSModeOff, "Off" }
51 char *drm_get_dpms_name(int val)
55 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
56 if (drm_dpms_enum_list[i].type == val)
57 return drm_dpms_enum_list[i].name;
62 static struct drm_prop_enum_list drm_conn_enum_list[] =
63 { { ConnectorUnknown, "Unknown" },
64 { ConnectorVGA, "VGA" },
65 { ConnectorDVII, "DVI-I" },
66 { ConnectorDVID, "DVI-D" },
67 { ConnectorDVIA, "DVI-A" },
68 { ConnectorComposite, "Composite" },
69 { ConnectorSVIDEO, "SVIDEO" },
70 { ConnectorLVDS, "LVDS" },
71 { ConnectorComponent, "Component" },
72 { Connector9PinDIN, "9-pin DIN" },
73 { ConnectorDisplayPort, "DisplayPort" },
74 { ConnectorHDMIA, "HDMI Type A" },
75 { ConnectorHDMIB, "HDMI Type B" },
77 static struct drm_prop_enum_list drm_output_enum_list[] =
78 { { DRM_MODE_OUTPUT_NONE, "None" },
79 { DRM_MODE_OUTPUT_DAC, "DAC" },
80 { DRM_MODE_OUTPUT_TMDS, "TMDS" },
81 { DRM_MODE_OUTPUT_LVDS, "LVDS" },
82 { DRM_MODE_OUTPUT_TVDAC, "TV" },
85 char *drm_get_output_name(struct drm_output *output)
89 snprintf(buf, 32, "%s-%d", drm_output_enum_list[output->output_type].name,
90 output->output_type_id);
94 char *drm_get_output_status_name(enum drm_output_status status)
96 if (status == output_status_connected)
98 else if (status == output_status_disconnected)
99 return "disconnected";
105 * drm_idr_get - allocate a new identifier
107 * @ptr: object pointer, used to generate unique ID
110 * Caller must hold DRM mode_config lock.
112 * Create a unique identifier based on @ptr in @dev's identifier space. Used
113 * for tracking modes, CRTCs and outputs.
116 * New unique (relative to other objects in @dev) integer identifier for the
119 int drm_idr_get(struct drm_device *dev, void *ptr)
124 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
125 DRM_ERROR("Ran out memory getting a mode number\n");
129 ret = idr_get_new_above(&dev->mode_config.crtc_idr, ptr, 1, &new_id);
137 * drm_idr_put - free an identifer
142 * Caller must hold DRM mode_config lock.
144 * Free @id from @dev's unique identifier pool.
146 void drm_idr_put(struct drm_device *dev, int id)
148 idr_remove(&dev->mode_config.crtc_idr, id);
152 * drm_crtc_from_fb - find the CRTC structure associated with an fb
154 * @fb: framebuffer in question
157 * Caller must hold mode_config lock.
159 * Find CRTC in the mode_config structure that matches @fb.
162 * Pointer to the CRTC or NULL if it wasn't found.
164 struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev,
165 struct drm_framebuffer *fb)
167 struct drm_crtc *crtc;
169 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
177 * drm_framebuffer_create - create a new framebuffer object
181 * Caller must hold mode config lock.
183 * Creates a new framebuffer objects and adds it to @dev's DRM mode_config.
186 * Pointer to new framebuffer or NULL on error.
188 struct drm_framebuffer *drm_framebuffer_create(struct drm_device *dev)
190 struct drm_framebuffer *fb;
192 fb = kzalloc(sizeof(struct drm_framebuffer), GFP_KERNEL);
196 fb->id = drm_idr_get(dev, fb);
198 dev->mode_config.num_fb++;
199 list_add(&fb->head, &dev->mode_config.fb_list);
203 EXPORT_SYMBOL(drm_framebuffer_create);
206 * drm_framebuffer_destroy - remove a framebuffer object
207 * @fb: framebuffer to remove
210 * Caller must hold mode config lock.
212 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
213 * it, setting it to NULL.
215 void drm_framebuffer_destroy(struct drm_framebuffer *fb)
217 struct drm_device *dev = fb->dev;
218 struct drm_crtc *crtc;
220 /* remove from any CRTC */
221 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
226 drm_idr_put(dev, fb->id);
228 dev->mode_config.num_fb--;
232 EXPORT_SYMBOL(drm_framebuffer_destroy);
235 * drm_crtc_create - create a new CRTC object
237 * @funcs: callbacks for the new CRTC
240 * Caller must hold mode config lock.
242 * Creates a new CRTC object and adds it to @dev's mode_config structure.
245 * Pointer to new CRTC object or NULL on error.
247 struct drm_crtc *drm_crtc_create(struct drm_device *dev,
248 const struct drm_crtc_funcs *funcs)
250 struct drm_crtc *crtc;
252 crtc = kzalloc(sizeof(struct drm_crtc), GFP_KERNEL);
259 crtc->id = drm_idr_get(dev, crtc);
261 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
262 dev->mode_config.num_crtc++;
266 EXPORT_SYMBOL(drm_crtc_create);
269 * drm_crtc_destroy - remove a CRTC object
270 * @crtc: CRTC to remove
273 * Caller must hold mode config lock.
275 * Cleanup @crtc. Calls @crtc's cleanup function, then removes @crtc from
276 * its associated DRM device's mode_config. Frees it afterwards.
278 void drm_crtc_destroy(struct drm_crtc *crtc)
280 struct drm_device *dev = crtc->dev;
282 if (crtc->funcs->cleanup)
283 (*crtc->funcs->cleanup)(crtc);
285 drm_idr_put(dev, crtc->id);
286 list_del(&crtc->head);
287 dev->mode_config.num_crtc--;
290 EXPORT_SYMBOL(drm_crtc_destroy);
293 * drm_crtc_in_use - check if a given CRTC is in a mode_config
294 * @crtc: CRTC to check
297 * Caller must hold mode config lock.
299 * Walk @crtc's DRM device's mode_config and see if it's in use.
302 * True if @crtc is part of the mode_config, false otherwise.
304 bool drm_crtc_in_use(struct drm_crtc *crtc)
306 struct drm_output *output;
307 struct drm_device *dev = crtc->dev;
308 /* FIXME: Locking around list access? */
309 list_for_each_entry(output, &dev->mode_config.output_list, head)
310 if (output->crtc == crtc)
314 EXPORT_SYMBOL(drm_crtc_in_use);
317 * Detailed mode info for a standard 640x480@60Hz monitor
319 static struct drm_display_mode std_mode[] = {
320 { DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 25200, 640, 656,
321 752, 800, 0, 480, 490, 492, 525, 0,
322 V_NHSYNC | V_NVSYNC) }, /* 640x480@60Hz */
326 * drm_crtc_probe_output_modes - get complete set of display modes
328 * @maxX: max width for modes
329 * @maxY: max height for modes
332 * Caller must hold mode config lock.
334 * Based on @dev's mode_config layout, scan all the outputs and try to detect
335 * modes on them. Modes will first be added to the output's probed_modes
336 * list, then culled (based on validity and the @maxX, @maxY parameters) and
337 * put into the normal modes list.
339 * Intended to be used either at bootup time or when major configuration
340 * changes have occurred.
342 * FIXME: take into account monitor limits
344 void drm_crtc_probe_single_output_modes(struct drm_output *output, int maxX, int maxY)
346 struct drm_device *dev = output->dev;
347 struct drm_display_mode *mode, *t;
349 //if (maxX == 0 || maxY == 0)
352 /* set all modes to the unverified state */
353 list_for_each_entry_safe(mode, t, &output->modes, head)
354 mode->status = MODE_UNVERIFIED;
356 output->status = (*output->funcs->detect)(output);
358 if (output->status == output_status_disconnected) {
359 DRM_DEBUG("%s is disconnected\n", drm_get_output_name(output));
360 /* TODO set EDID to NULL */
364 ret = (*output->funcs->get_modes)(output);
367 drm_mode_output_list_update(output);
371 drm_mode_validate_size(dev, &output->modes, maxX,
373 list_for_each_entry_safe(mode, t, &output->modes, head) {
374 if (mode->status == MODE_OK)
375 mode->status = (*output->funcs->mode_valid)(output,mode);
379 drm_mode_prune_invalid(dev, &output->modes, TRUE);
381 if (list_empty(&output->modes)) {
382 struct drm_display_mode *stdmode;
384 DRM_DEBUG("No valid modes on %s\n", drm_get_output_name(output));
386 /* Should we do this here ???
387 * When no valid EDID modes are available we end up
388 * here and bailed in the past, now we add a standard
389 * 640x480@60Hz mode and carry on.
391 stdmode = drm_mode_duplicate(dev, &std_mode[0]);
392 drm_mode_probed_add(output, stdmode);
393 drm_mode_list_concat(&output->probed_modes,
396 DRM_DEBUG("Adding standard 640x480 @ 60Hz to %s\n",
397 drm_get_output_name(output));
400 drm_mode_sort(&output->modes);
402 DRM_DEBUG("Probed modes for %s\n", drm_get_output_name(output));
403 list_for_each_entry_safe(mode, t, &output->modes, head) {
404 mode->vrefresh = drm_mode_vrefresh(mode);
406 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
407 drm_mode_debug_printmodeline(dev, mode);
411 void drm_crtc_probe_output_modes(struct drm_device *dev, int maxX, int maxY)
413 struct drm_output *output;
415 list_for_each_entry(output, &dev->mode_config.output_list, head) {
416 drm_crtc_probe_single_output_modes(output, maxX, maxY);
419 EXPORT_SYMBOL(drm_crtc_probe_output_modes);
422 * drm_crtc_set_mode - set a mode
423 * @crtc: CRTC to program
429 * Caller must hold mode config lock.
431 * Try to set @mode on @crtc. Give @crtc and its associated outputs a chance
432 * to fixup or reject the mode prior to trying to set it.
435 * True if the mode was set successfully, or false otherwise.
437 bool drm_crtc_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
440 struct drm_device *dev = crtc->dev;
441 struct drm_display_mode *adjusted_mode, saved_mode;
442 int saved_x, saved_y;
443 bool didLock = false;
444 struct drm_output *output;
447 adjusted_mode = drm_mode_duplicate(dev, mode);
449 crtc->enabled = drm_crtc_in_use(crtc);
454 didLock = crtc->funcs->lock(crtc);
456 saved_mode = crtc->mode;
460 /* Update crtc values up front so the driver can rely on them for mode
467 if (drm_mode_equal(&saved_mode, &crtc->mode)) {
468 if (saved_x != crtc->x || saved_y != crtc->y) {
469 crtc->funcs->mode_set_base(crtc, crtc->x, crtc->y);
474 /* Pass our mode to the outputs and the CRTC to give them a chance to
475 * adjust it according to limitations or output properties, and also
476 * a chance to reject the mode entirely.
478 list_for_each_entry(output, &dev->mode_config.output_list, head) {
480 if (output->crtc != crtc)
483 if (!(ret = output->funcs->mode_fixup(output, mode, adjusted_mode))) {
488 if (!(ret = crtc->funcs->mode_fixup(crtc, mode, adjusted_mode))) {
492 /* Prepare the outputs and CRTCs before setting the mode. */
493 list_for_each_entry(output, &dev->mode_config.output_list, head) {
495 if (output->crtc != crtc)
498 /* Disable the output as the first thing we do. */
499 output->funcs->prepare(output);
502 crtc->funcs->prepare(crtc);
504 /* Set up the DPLL and any output state that needs to adjust or depend
507 crtc->funcs->mode_set(crtc, mode, adjusted_mode, x, y);
509 list_for_each_entry(output, &dev->mode_config.output_list, head) {
511 if (output->crtc != crtc)
514 DRM_INFO("%s: set mode %s %x\n", drm_get_output_name(output), mode->name, mode->mode_id);
516 output->funcs->mode_set(output, mode, adjusted_mode);
519 /* Now, enable the clocks, plane, pipe, and outputs that we set up. */
520 crtc->funcs->commit(crtc);
522 list_for_each_entry(output, &dev->mode_config.output_list, head) {
524 if (output->crtc != crtc)
527 output->funcs->commit(output);
529 #if 0 // TODO def RANDR_12_INTERFACE
530 if (output->randr_output)
531 RRPostPendingProperties (output->randr_output);
535 /* XXX free adjustedmode */
536 drm_mode_destroy(dev, adjusted_mode);
538 // if (scrn->pScreen)
539 // drm_crtc_set_screen_sub_pixel_order(dev);
543 crtc->mode = saved_mode;
549 crtc->funcs->unlock (crtc);
553 EXPORT_SYMBOL(drm_crtc_set_mode);
556 * drm_disable_unused_functions - disable unused objects
560 * Caller must hold mode config lock.
562 * If an output or CRTC isn't part of @dev's mode_config, it can be disabled
563 * by calling its dpms function, which should power it off.
565 void drm_disable_unused_functions(struct drm_device *dev)
567 struct drm_output *output;
568 struct drm_crtc *crtc;
570 list_for_each_entry(output, &dev->mode_config.output_list, head) {
572 (*output->funcs->dpms)(output, DPMSModeOff);
575 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
577 crtc->funcs->dpms(crtc, DPMSModeOff);
580 EXPORT_SYMBOL(drm_disable_unused_functions);
583 * drm_mode_probed_add - add a mode to the specified output's probed mode list
584 * @output: output the new mode
588 * Caller must hold mode config lock.
590 * Add @mode to @output's mode list for later use.
592 void drm_mode_probed_add(struct drm_output *output,
593 struct drm_display_mode *mode)
595 list_add(&mode->head, &output->probed_modes);
597 EXPORT_SYMBOL(drm_mode_probed_add);
600 * drm_mode_remove - remove and free a mode
601 * @output: output list to modify
602 * @mode: mode to remove
605 * Caller must hold mode config lock.
607 * Remove @mode from @output's mode list, then free it.
609 void drm_mode_remove(struct drm_output *output, struct drm_display_mode *mode)
611 list_del(&mode->head);
614 EXPORT_SYMBOL(drm_mode_remove);
617 * drm_output_create - create a new output
619 * @funcs: callbacks for this output
620 * @name: user visible name of the output
623 * Caller must hold @dev's mode_config lock.
625 * Creates a new drm_output structure and adds it to @dev's mode_config
629 * Pointer to the new output or NULL on error.
631 struct drm_output *drm_output_create(struct drm_device *dev,
632 const struct drm_output_funcs *funcs,
635 struct drm_output *output = NULL;
637 output = kzalloc(sizeof(struct drm_output), GFP_KERNEL);
642 output->funcs = funcs;
643 output->id = drm_idr_get(dev, output);
644 output->output_type = output_type;
645 output->output_type_id = 1; /* TODO */
646 output->subpixel_order = SubPixelUnknown;
647 INIT_LIST_HEAD(&output->user_modes);
648 INIT_LIST_HEAD(&output->probed_modes);
649 INIT_LIST_HEAD(&output->modes);
651 /* output_set_monitor(output)? */
652 /* check for output_ignored(output)? */
654 mutex_lock(&dev->mode_config.mutex);
655 list_add_tail(&output->head, &dev->mode_config.output_list);
656 dev->mode_config.num_output++;
658 drm_output_attach_property(output, dev->mode_config.edid_property, 0);
660 drm_output_attach_property(output, dev->mode_config.dpms_property, 0);
662 mutex_unlock(&dev->mode_config.mutex);
667 EXPORT_SYMBOL(drm_output_create);
670 * drm_output_destroy - remove an output
671 * @output: output to remove
674 * Caller must hold @dev's mode_config lock.
676 * Call @output's cleanup function, then remove the output from the DRM
677 * mode_config after freeing @output's modes.
679 void drm_output_destroy(struct drm_output *output)
681 struct drm_device *dev = output->dev;
682 struct drm_display_mode *mode, *t;
684 if (*output->funcs->cleanup)
685 (*output->funcs->cleanup)(output);
687 list_for_each_entry_safe(mode, t, &output->probed_modes, head)
688 drm_mode_remove(output, mode);
690 list_for_each_entry_safe(mode, t, &output->modes, head)
691 drm_mode_remove(output, mode);
693 list_for_each_entry_safe(mode, t, &output->user_modes, head)
694 drm_mode_remove(output, mode);
696 mutex_lock(&dev->mode_config.mutex);
697 drm_idr_put(dev, output->id);
698 list_del(&output->head);
699 mutex_unlock(&dev->mode_config.mutex);
702 EXPORT_SYMBOL(drm_output_destroy);
706 * drm_mode_create - create a new display mode
712 * Create a new drm_display_mode, give it an ID, and return it.
715 * Pointer to new mode on success, NULL on error.
717 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
719 struct drm_display_mode *nmode;
721 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
725 nmode->mode_id = drm_idr_get(dev, nmode);
728 EXPORT_SYMBOL(drm_mode_create);
731 * drm_mode_destroy - remove a mode
733 * @mode: mode to remove
736 * Caller must hold mode config lock.
738 * Free @mode's unique identifier, then free it.
740 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
742 drm_idr_put(dev, mode->mode_id);
746 EXPORT_SYMBOL(drm_mode_destroy);
748 static int drm_mode_create_standard_output_properties(struct drm_device *dev)
753 * Standard properties (apply to all outputs)
755 dev->mode_config.edid_property =
756 drm_property_create(dev, DRM_MODE_PROP_BLOB | DRM_MODE_PROP_IMMUTABLE,
759 dev->mode_config.dpms_property =
760 drm_property_create(dev, DRM_MODE_PROP_ENUM,
761 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
762 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
763 drm_property_add_enum(dev->mode_config.dpms_property, i, drm_dpms_enum_list[i].type, drm_dpms_enum_list[i].name);
765 dev->mode_config.connector_type_property =
766 drm_property_create(dev, DRM_MODE_PROP_ENUM | DRM_MODE_PROP_IMMUTABLE,
767 "Connector Type", ARRAY_SIZE(drm_conn_enum_list));
768 for (i = 0; i < ARRAY_SIZE(drm_conn_enum_list); i++)
769 drm_property_add_enum(dev->mode_config.connector_type_property, i, drm_conn_enum_list[i].type, drm_conn_enum_list[i].name);
771 dev->mode_config.connector_num_property =
772 drm_property_create(dev, DRM_MODE_PROP_RANGE | DRM_MODE_PROP_IMMUTABLE,
774 dev->mode_config.connector_num_property->values[0] = 0;
775 dev->mode_config.connector_num_property->values[1] = 20;
778 * TV specific properties
780 dev->mode_config.tv_left_margin_property =
781 drm_property_create(dev, DRM_MODE_PROP_RANGE |
782 DRM_MODE_PROP_IMMUTABLE,
784 dev->mode_config.tv_left_margin_property->values[0] = 0;
785 dev->mode_config.tv_left_margin_property->values[1] = 100;
787 dev->mode_config.tv_right_margin_property =
788 drm_property_create(dev, DRM_MODE_PROP_RANGE |
789 DRM_MODE_PROP_IMMUTABLE,
791 dev->mode_config.tv_right_margin_property->values[0] = 0;
792 dev->mode_config.tv_right_margin_property->values[1] = 100;
794 dev->mode_config.tv_top_margin_property =
795 drm_property_create(dev, DRM_MODE_PROP_RANGE |
796 DRM_MODE_PROP_IMMUTABLE,
798 dev->mode_config.tv_top_margin_property->values[0] = 0;
799 dev->mode_config.tv_top_margin_property->values[1] = 100;
801 dev->mode_config.tv_bottom_margin_property =
802 drm_property_create(dev, DRM_MODE_PROP_RANGE |
803 DRM_MODE_PROP_IMMUTABLE,
805 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
806 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
812 * drm_mode_config_init - initialize DRM mode_configuration structure
816 * None, should happen single threaded at init time.
818 * Initialize @dev's mode_config structure, used for tracking the graphics
819 * configuration of @dev.
821 void drm_mode_config_init(struct drm_device *dev)
823 mutex_init(&dev->mode_config.mutex);
824 INIT_LIST_HEAD(&dev->mode_config.fb_list);
825 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
826 INIT_LIST_HEAD(&dev->mode_config.output_list);
827 INIT_LIST_HEAD(&dev->mode_config.property_list);
828 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
829 idr_init(&dev->mode_config.crtc_idr);
831 drm_mode_create_standard_output_properties(dev);
833 /* Just to be sure */
834 dev->mode_config.num_fb = 0;
835 dev->mode_config.num_output = 0;
836 dev->mode_config.num_crtc = 0;
837 dev->mode_config.hotplug_counter = 0;
839 EXPORT_SYMBOL(drm_mode_config_init);
842 * drm_get_buffer_object - find the buffer object for a given handle
844 * @bo: pointer to caller's buffer_object pointer
845 * @handle: handle to lookup
848 * Must take @dev's struct_mutex to protect buffer object lookup.
850 * Given @handle, lookup the buffer object in @dev and put it in the caller's
854 * Zero on success, -EINVAL if the handle couldn't be found.
856 static int drm_get_buffer_object(struct drm_device *dev, struct drm_buffer_object **bo, unsigned long handle)
858 struct drm_user_object *uo;
859 struct drm_hash_item *hash;
864 mutex_lock(&dev->struct_mutex);
865 ret = drm_ht_find_item(&dev->object_hash, handle, &hash);
867 DRM_ERROR("Couldn't find handle.\n");
872 uo = drm_hash_entry(hash, struct drm_user_object, hash);
873 if (uo->type != drm_buffer_type) {
878 *bo = drm_user_object_entry(uo, struct drm_buffer_object, base);
881 mutex_unlock(&dev->struct_mutex);
886 * drm_pick_crtcs - pick crtcs for output devices
890 * Caller must hold mode config lock.
892 static void drm_pick_crtcs (struct drm_device *dev)
895 struct drm_output *output, *output_equal;
896 struct drm_crtc *crtc;
897 struct drm_display_mode *des_mode = NULL, *modes, *modes_equal;
900 list_for_each_entry(output, &dev->mode_config.output_list, head) {
903 /* Don't hook up outputs that are disconnected ??
905 * This is debateable. Do we want fixed /dev/fbX or
906 * dynamic on hotplug (need mode code for that though) ?
908 * If we don't hook up outputs now, then we only create
909 * /dev/fbX for the output that's enabled, that's good as
910 * the users console will be on that output.
912 * If we do hook up outputs that are disconnected now, then
913 * the user may end up having to muck about with the fbcon
914 * map flags to assign his console to the enabled output. Ugh.
916 if (output->status != output_status_connected)
919 if (list_empty(&output->modes))
924 list_for_each_entry(des_mode, &output->modes, head) {
925 if (des_mode->type & DRM_MODE_TYPE_PREFERRED) {
931 /* No preferred mode, let's just select the first available */
934 list_for_each_entry(des_mode, &output->modes, head) {
940 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
944 if ((output->possible_crtcs & (1 << c)) == 0)
947 list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
948 if (output->id == output_equal->id)
951 /* Find out if crtc has been assigned before */
952 if (output_equal->crtc == crtc)
956 #if 1 /* continue for now */
962 list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
964 if (output->id == output_equal->id)
967 list_for_each_entry(modes, &output->modes, head) {
968 list_for_each_entry(modes_equal, &output_equal->modes, head) {
969 if (drm_mode_equal (modes, modes_equal)) {
970 if ((output->possible_clones & output_equal->possible_clones) && (output_equal->crtc == crtc)) {
971 printk("Cloning %s (0x%lx) to %s (0x%lx)\n",drm_get_output_name(output),output->possible_clones,drm_get_output_name(output_equal),output_equal->possible_clones);
982 /* crtc has been assigned skip it */
986 /* Found a CRTC to attach to, do it ! */
988 output->crtc->desired_mode = des_mode;
989 output->initial_x = 0;
990 output->initial_y = 0;
991 DRM_DEBUG("Desired mode for CRTC %d is 0x%x:%s\n",c,des_mode->mode_id, des_mode->name);
996 EXPORT_SYMBOL(drm_pick_crtcs);
999 * drm_initial_config - setup a sane initial output configuration
1001 * @can_grow: this configuration is growable
1004 * Called at init time, must take mode config lock.
1006 * Scan the CRTCs and outputs and try to put together an initial setup.
1007 * At the moment, this is a cloned configuration across all heads with
1008 * a new framebuffer object as the backing store.
1011 * Zero if everything went ok, nonzero otherwise.
1013 bool drm_initial_config(struct drm_device *dev, bool can_grow)
1015 struct drm_output *output;
1016 struct drm_crtc *crtc;
1019 mutex_lock(&dev->mode_config.mutex);
1021 drm_crtc_probe_output_modes(dev, 2048, 2048);
1023 drm_pick_crtcs(dev);
1025 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1027 /* can't setup the crtc if there's no assigned mode */
1028 if (!crtc->desired_mode)
1031 /* Now setup the fbdev for attached crtcs */
1032 dev->driver->fb_probe(dev, crtc);
1035 /* This is a little screwy, as we've already walked the outputs
1036 * above, but it's a little bit of magic too. There's the potential
1037 * for things not to get setup above if an existing device gets
1038 * re-assigned thus confusing the hardware. By walking the outputs
1039 * this fixes up their crtc's.
1041 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1043 /* can't setup the output if there's no assigned mode */
1044 if (!output->crtc || !output->crtc->desired_mode)
1047 /* and needs an attached fb */
1048 if (output->crtc->fb)
1049 drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0);
1052 drm_disable_unused_functions(dev);
1054 mutex_unlock(&dev->mode_config.mutex);
1057 EXPORT_SYMBOL(drm_initial_config);
1060 * drm_mode_config_cleanup - free up DRM mode_config info
1064 * Caller must hold mode config lock.
1066 * Free up all the outputs and CRTCs associated with this DRM device, then
1067 * free up the framebuffers and associated buffer objects.
1069 * FIXME: cleanup any dangling user buffer objects too
1071 void drm_mode_config_cleanup(struct drm_device *dev)
1073 struct drm_output *output, *ot;
1074 struct drm_crtc *crtc, *ct;
1075 struct drm_framebuffer *fb, *fbt;
1076 struct drm_property *property, *pt;
1078 list_for_each_entry_safe(output, ot, &dev->mode_config.output_list, head) {
1079 drm_sysfs_output_remove(output);
1080 drm_output_destroy(output);
1083 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, head) {
1084 drm_property_destroy(dev, property);
1087 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
1088 /* there should only be bo of kernel type left */
1089 if (fb->bo->type != drm_bo_type_kernel)
1090 drm_framebuffer_destroy(fb);
1092 dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
1095 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
1096 drm_crtc_destroy(crtc);
1100 EXPORT_SYMBOL(drm_mode_config_cleanup);
1103 * drm_crtc_set_config - set a new config from userspace
1104 * @crtc: CRTC to setup
1105 * @crtc_info: user provided configuration
1106 * @new_mode: new mode to set
1107 * @output_set: set of outputs for the new config
1108 * @fb: new framebuffer
1111 * Caller must hold mode config lock.
1113 * Setup a new configuration, provided by the user in @crtc_info, and enable
1119 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)
1121 struct drm_device *dev = crtc->dev;
1122 struct drm_crtc **save_crtcs, *new_crtc;
1123 bool save_enabled = crtc->enabled;
1124 bool changed = false;
1125 bool flip_or_move = false;
1126 struct drm_output *output;
1129 /* this is meant to be num_output not num_crtc */
1130 save_crtcs = kzalloc(dev->mode_config.num_output * sizeof(struct drm_crtc *), GFP_KERNEL);
1134 /* We should be able to check here if the fb has the same properties
1135 * and then just flip_or_move it */
1137 flip_or_move = true;
1139 if (crtc_info->x != crtc->x || crtc_info->y != crtc->y)
1140 flip_or_move = true;
1142 if (new_mode && !drm_mode_equal(new_mode, &crtc->mode)) {
1143 DRM_DEBUG("modes are different\n");
1144 drm_mode_debug_printmodeline(dev, &crtc->mode);
1145 drm_mode_debug_printmodeline(dev, new_mode);
1149 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1150 save_crtcs[count++] = output->crtc;
1152 if (output->crtc == crtc)
1155 new_crtc = output->crtc;
1157 for (ro = 0; ro < crtc_info->count_outputs; ro++) {
1158 if (output_set[ro] == output)
1161 if (new_crtc != output->crtc) {
1163 output->crtc = new_crtc;
1167 /* mode_set_base is not a required function */
1168 if (flip_or_move && !crtc->funcs->mode_set_base)
1173 crtc->enabled = (new_mode != NULL);
1174 if (new_mode != NULL) {
1175 DRM_DEBUG("attempting to set mode from userspace\n");
1176 drm_mode_debug_printmodeline(dev, new_mode);
1177 if (!drm_crtc_set_mode(crtc, new_mode, crtc_info->x,
1179 crtc->enabled = save_enabled;
1181 list_for_each_entry(output, &dev->mode_config.output_list, head)
1182 output->crtc = save_crtcs[count++];
1186 crtc->desired_x = crtc_info->x;
1187 crtc->desired_y = crtc_info->y;
1188 crtc->desired_mode = new_mode;
1190 drm_disable_unused_functions(dev);
1191 } else if (flip_or_move) {
1194 crtc->funcs->mode_set_base(crtc, crtc_info->x, crtc_info->y);
1202 * drm_hotplug_stage_two
1204 * @output hotpluged output
1207 * Caller must hold mode config lock, function might grab struct lock.
1209 * Stage two of a hotplug.
1212 * Zero on success, errno on failure.
1214 int drm_hotplug_stage_two(struct drm_device *dev, struct drm_output *output,
1219 dev->mode_config.hotplug_counter++;
1221 /* We might want to do something more here */
1223 DRM_DEBUG("not connected\n");
1227 if (output->crtc && output->crtc->desired_mode) {
1228 DRM_DEBUG("drm thinks that the output already has a config\n");
1232 drm_crtc_probe_output_modes(dev, 2048, 2048);
1235 drm_pick_crtcs(dev);
1237 if (!output->crtc || !output->crtc->desired_mode) {
1238 DRM_DEBUG("could not find a desired mode or crtc for output\n");
1242 /* We should really check if there is a fb using this crtc */
1244 dev->driver->fb_probe(dev, output->crtc);
1246 dev->driver->fb_resize(dev, output->crtc);
1248 if (!drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0))
1249 DRM_ERROR("failed to set mode after hotplug\n");
1252 drm_sysfs_hotplug_event(dev);
1254 drm_disable_unused_functions(dev);
1258 EXPORT_SYMBOL(drm_hotplug_stage_two);
1260 int drm_mode_hotplug_ioctl(struct drm_device *dev,
1261 void *data, struct drm_file *file_priv)
1263 struct drm_mode_hotplug *arg = data;
1265 arg->counter = dev->mode_config.hotplug_counter;
1271 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1272 * @out: drm_mode_modeinfo struct to return to the user
1273 * @in: drm_display_mode to use
1278 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1281 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, struct drm_display_mode *in)
1283 out->clock = in->clock;
1284 out->hdisplay = in->hdisplay;
1285 out->hsync_start = in->hsync_start;
1286 out->hsync_end = in->hsync_end;
1287 out->htotal = in->htotal;
1288 out->hskew = in->hskew;
1289 out->vdisplay = in->vdisplay;
1290 out->vsync_start = in->vsync_start;
1291 out->vsync_end = in->vsync_end;
1292 out->vtotal = in->vtotal;
1293 out->vscan = in->vscan;
1294 out->vrefresh = in->vrefresh;
1295 out->flags = in->flags;
1296 out->type = in->type;
1297 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1298 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1302 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1303 * @out: drm_display_mode to return to the user
1304 * @in: drm_mode_modeinfo to use
1309 * Convert a drmo_mode_modeinfo into a drm_display_mode structure to return to
1312 void drm_crtc_convert_umode(struct drm_display_mode *out, struct drm_mode_modeinfo *in)
1314 out->clock = in->clock;
1315 out->hdisplay = in->hdisplay;
1316 out->hsync_start = in->hsync_start;
1317 out->hsync_end = in->hsync_end;
1318 out->htotal = in->htotal;
1319 out->hskew = in->hskew;
1320 out->vdisplay = in->vdisplay;
1321 out->vsync_start = in->vsync_start;
1322 out->vsync_end = in->vsync_end;
1323 out->vtotal = in->vtotal;
1324 out->vscan = in->vscan;
1325 out->vrefresh = in->vrefresh;
1326 out->flags = in->flags;
1327 out->type = in->type;
1328 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1329 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1333 * drm_mode_getresources - get graphics configuration
1334 * @inode: inode from the ioctl
1335 * @filp: file * from the ioctl
1336 * @cmd: cmd from ioctl
1337 * @arg: arg from ioctl
1340 * Takes mode config lock.
1342 * Construct a set of configuration description structures and return
1343 * them to the user, including CRTC, output and framebuffer configuration.
1345 * Called by the user via ioctl.
1348 * Zero on success, errno on failure.
1350 int drm_mode_getresources(struct drm_device *dev,
1351 void *data, struct drm_file *file_priv)
1353 struct drm_mode_card_res *card_res = data;
1354 struct list_head *lh;
1355 struct drm_framebuffer *fb;
1356 struct drm_output *output;
1357 struct drm_crtc *crtc;
1359 int output_count = 0;
1363 uint32_t __user *fb_id;
1364 uint32_t __user *crtc_id;
1365 uint32_t __user *output_id;
1367 mutex_lock(&dev->mode_config.mutex);
1369 list_for_each(lh, &dev->mode_config.fb_list)
1372 list_for_each(lh, &dev->mode_config.crtc_list)
1375 list_for_each(lh, &dev->mode_config.output_list)
1378 card_res->max_height = dev->mode_config.max_height;
1379 card_res->min_height = dev->mode_config.min_height;
1380 card_res->max_width = dev->mode_config.max_width;
1381 card_res->min_width = dev->mode_config.min_width;
1383 /* handle this in 4 parts */
1385 if (card_res->count_fbs >= fb_count) {
1387 fb_id = (uint32_t *)(unsigned long)card_res->fb_id_ptr;
1388 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
1389 if (put_user(fb->id, fb_id + copied)) {
1396 card_res->count_fbs = fb_count;
1399 if (card_res->count_crtcs >= crtc_count) {
1401 crtc_id = (uint32_t *)(unsigned long)card_res->crtc_id_ptr;
1402 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head){
1403 DRM_DEBUG("CRTC ID is %d\n", crtc->id);
1404 if (put_user(crtc->id, crtc_id + copied)) {
1411 card_res->count_crtcs = crtc_count;
1415 if (card_res->count_outputs >= output_count) {
1417 output_id = (uint32_t *)(unsigned long)card_res->output_id_ptr;
1418 list_for_each_entry(output, &dev->mode_config.output_list,
1420 DRM_DEBUG("OUTPUT ID is %d\n", output->id);
1421 if (put_user(output->id, output_id + copied)) {
1428 card_res->count_outputs = output_count;
1430 DRM_DEBUG("Counted %d %d\n", card_res->count_crtcs,
1431 card_res->count_outputs);
1434 mutex_unlock(&dev->mode_config.mutex);
1439 * drm_mode_getcrtc - get CRTC configuration
1440 * @inode: inode from the ioctl
1441 * @filp: file * from the ioctl
1442 * @cmd: cmd from ioctl
1443 * @arg: arg from ioctl
1448 * Construct a CRTC configuration structure to return to the user.
1450 * Called by the user via ioctl.
1453 * Zero on success, errno on failure.
1455 int drm_mode_getcrtc(struct drm_device *dev,
1456 void *data, struct drm_file *file_priv)
1458 struct drm_mode_crtc *crtc_resp = data;
1459 struct drm_crtc *crtc;
1460 struct drm_output *output;
1464 mutex_lock(&dev->mode_config.mutex);
1465 crtc = idr_find(&dev->mode_config.crtc_idr, crtc_resp->crtc_id);
1466 if (!crtc || (crtc->id != crtc_resp->crtc_id)) {
1471 crtc_resp->x = crtc->x;
1472 crtc_resp->y = crtc->y;
1475 crtc_resp->fb_id = crtc->fb->id;
1477 crtc_resp->fb_id = 0;
1479 crtc_resp->outputs = 0;
1480 if (crtc->enabled) {
1482 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1483 crtc_resp->mode_valid = 1;
1485 list_for_each_entry(output, &dev->mode_config.output_list, head) {
1486 if (output->crtc == crtc)
1487 crtc_resp->outputs |= 1 << (ocount++);
1491 crtc_resp->mode_valid = 0;
1495 mutex_unlock(&dev->mode_config.mutex);
1500 * drm_mode_getoutput - get output configuration
1501 * @inode: inode from the ioctl
1502 * @filp: file * from the ioctl
1503 * @cmd: cmd from ioctl
1504 * @arg: arg from ioctl
1509 * Construct a output configuration structure to return to the user.
1511 * Called by the user via ioctl.
1514 * Zero on success, errno on failure.
1516 int drm_mode_getoutput(struct drm_device *dev,
1517 void *data, struct drm_file *file_priv)
1519 struct drm_mode_get_output *out_resp = data;
1520 struct drm_output *output;
1521 struct drm_display_mode *mode;
1523 int props_count = 0;
1527 struct drm_mode_modeinfo u_mode;
1528 struct drm_mode_modeinfo __user *mode_ptr;
1529 uint32_t __user *prop_ptr;
1530 uint64_t __user *prop_values;
1532 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1534 DRM_DEBUG("output id %d:\n", out_resp->output);
1536 mutex_lock(&dev->mode_config.mutex);
1537 output= idr_find(&dev->mode_config.crtc_idr, out_resp->output);
1538 if (!output || (output->id != out_resp->output)) {
1543 list_for_each_entry(mode, &output->modes, head)
1546 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1547 if (output->property_ids[i] != 0) {
1552 if (out_resp->count_modes == 0) {
1553 drm_crtc_probe_single_output_modes(output, dev->mode_config.max_width, dev->mode_config.max_height);
1556 out_resp->output_type = output->output_type;
1557 out_resp->output_type_id = output->output_type_id;
1558 out_resp->mm_width = output->mm_width;
1559 out_resp->mm_height = output->mm_height;
1560 out_resp->subpixel = output->subpixel_order;
1561 out_resp->connection = output->status;
1563 out_resp->crtc = output->crtc->id;
1567 out_resp->crtcs = output->possible_crtcs;
1568 out_resp->clones = output->possible_clones;
1570 if ((out_resp->count_modes >= mode_count) && mode_count) {
1572 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1573 list_for_each_entry(mode, &output->modes, head) {
1574 drm_crtc_convert_to_umode(&u_mode, mode);
1575 if (copy_to_user(mode_ptr + copied,
1576 &u_mode, sizeof(u_mode))) {
1584 out_resp->count_modes = mode_count;
1586 if ((out_resp->count_props >= props_count) && props_count) {
1588 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1589 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1590 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
1591 if (output->property_ids[i] != 0) {
1592 if (put_user(output->property_ids[i], prop_ptr + copied)) {
1597 if (put_user(output->property_values[i], prop_values + copied)) {
1605 out_resp->count_props = props_count;
1608 mutex_unlock(&dev->mode_config.mutex);
1613 * drm_mode_setcrtc - set CRTC configuration
1614 * @inode: inode from the ioctl
1615 * @filp: file * from the ioctl
1616 * @cmd: cmd from ioctl
1617 * @arg: arg from ioctl
1622 * Build a new CRTC configuration based on user request.
1624 * Called by the user via ioctl.
1627 * Zero on success, errno on failure.
1629 int drm_mode_setcrtc(struct drm_device *dev,
1630 void *data, struct drm_file *file_priv)
1632 struct drm_mode_crtc *crtc_req = data;
1633 struct drm_crtc *crtc, *crtcfb;
1634 struct drm_output **output_set = NULL, *output;
1635 struct drm_framebuffer *fb = NULL;
1636 struct drm_display_mode *mode = NULL;
1637 uint32_t __user *set_outputs_ptr;
1641 mutex_lock(&dev->mode_config.mutex);
1642 crtc = idr_find(&dev->mode_config.crtc_idr, crtc_req->crtc_id);
1643 if (!crtc || (crtc->id != crtc_req->crtc_id)) {
1644 DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1649 if (crtc_req->mode_valid) {
1650 /* If we have a mode we need a framebuffer. */
1651 /* If we pass -1, set the mode with the currently bound fb */
1652 if (crtc_req->fb_id == -1) {
1653 list_for_each_entry(crtcfb, &dev->mode_config.crtc_list, head) {
1654 if (crtcfb == crtc) {
1655 DRM_DEBUG("Using current fb for setmode\n");
1660 fb = idr_find(&dev->mode_config.crtc_idr, crtc_req->fb_id);
1661 if (!fb || (fb->id != crtc_req->fb_id)) {
1662 DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id);
1668 mode = drm_mode_create(dev);
1669 drm_crtc_convert_umode(mode, &crtc_req->mode);
1670 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1673 if (crtc_req->count_outputs == 0 && mode) {
1674 DRM_DEBUG("Count outputs is 0 but mode set\n");
1679 if (crtc_req->count_outputs > 0 && !mode && !fb) {
1680 DRM_DEBUG("Count outputs is %d but no mode or fb set\n", crtc_req->count_outputs);
1685 if (crtc_req->count_outputs > 0) {
1687 /* Maybe we should check that count_outputs is a sensible value. */
1688 output_set = kmalloc(crtc_req->count_outputs *
1689 sizeof(struct drm_output *), GFP_KERNEL);
1695 for (i = 0; i < crtc_req->count_outputs; i++) {
1696 set_outputs_ptr = (uint32_t *)(unsigned long)crtc_req->set_outputs_ptr;
1697 if (get_user(out_id, &set_outputs_ptr[i])) {
1702 output = idr_find(&dev->mode_config.crtc_idr, out_id);
1703 if (!output || (out_id != output->id)) {
1704 DRM_DEBUG("Output id %d unknown\n", out_id);
1709 output_set[i] = output;
1713 ret = drm_crtc_set_config(crtc, crtc_req, mode, output_set, fb);
1717 mutex_unlock(&dev->mode_config.mutex);
1721 int drm_mode_cursor_ioctl(struct drm_device *dev,
1722 void *data, struct drm_file *file_priv)
1724 struct drm_mode_cursor *req = data;
1725 struct drm_crtc *crtc;
1726 struct drm_buffer_object *bo = NULL; /* must be set */
1732 DRM_ERROR("no operation set\n");
1736 mutex_lock(&dev->mode_config.mutex);
1737 crtc = idr_find(&dev->mode_config.crtc_idr, req->crtc);
1738 if (!crtc || (crtc->id != req->crtc)) {
1739 DRM_DEBUG("Unknown CRTC ID %d\n", req->crtc);
1744 if (req->flags & DRM_MODE_CURSOR_BO) {
1745 /* Turn of the cursor if handle is 0 */
1747 ret = drm_get_buffer_object(dev, &bo, req->handle);
1750 DRM_ERROR("invalid buffer id\n");
1755 if (crtc->funcs->cursor_set) {
1756 ret = crtc->funcs->cursor_set(crtc, bo, req->width, req->height);
1758 DRM_ERROR("crtc does not support cursor\n");
1764 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1765 if (crtc->funcs->cursor_move) {
1766 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1768 DRM_ERROR("crtc does not support cursor\n");
1774 mutex_unlock(&dev->mode_config.mutex);
1779 * drm_mode_addfb - add an FB to the graphics configuration
1780 * @inode: inode from the ioctl
1781 * @filp: file * from the ioctl
1782 * @cmd: cmd from ioctl
1783 * @arg: arg from ioctl
1786 * Takes mode config lock.
1788 * Add a new FB to the specified CRTC, given a user request.
1790 * Called by the user via ioctl.
1793 * Zero on success, errno on failure.
1795 int drm_mode_addfb(struct drm_device *dev,
1796 void *data, struct drm_file *file_priv)
1798 struct drm_mode_fb_cmd *r = data;
1799 struct drm_mode_config *config = &dev->mode_config;
1800 struct drm_framebuffer *fb;
1801 struct drm_buffer_object *bo;
1804 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1805 DRM_ERROR("mode new framebuffer width not within limits\n");
1808 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1809 DRM_ERROR("mode new framebuffer height not within limits\n");
1813 mutex_lock(&dev->mode_config.mutex);
1814 /* TODO check limits are okay */
1815 ret = drm_get_buffer_object(dev, &bo, r->handle);
1817 DRM_ERROR("BO handle not valid\n");
1822 /* TODO check buffer is sufficently large */
1823 /* TODO setup destructor callback */
1825 fb = drm_framebuffer_create(dev);
1827 DRM_ERROR("could not create framebuffer\n");
1832 fb->width = r->width;
1833 fb->height = r->height;
1834 fb->pitch = r->pitch;
1835 fb->bits_per_pixel = r->bpp;
1836 fb->depth = r->depth;
1839 r->buffer_id = fb->id;
1841 list_add(&fb->filp_head, &file_priv->fbs);
1844 mutex_unlock(&dev->mode_config.mutex);
1849 * drm_mode_rmfb - remove an FB from the configuration
1850 * @inode: inode from the ioctl
1851 * @filp: file * from the ioctl
1852 * @cmd: cmd from ioctl
1853 * @arg: arg from ioctl
1856 * Takes mode config lock.
1858 * Remove the FB specified by the user.
1860 * Called by the user via ioctl.
1863 * Zero on success, errno on failure.
1865 int drm_mode_rmfb(struct drm_device *dev,
1866 void *data, struct drm_file *file_priv)
1868 struct drm_framebuffer *fb = 0;
1869 struct drm_framebuffer *fbl = 0;
1870 uint32_t *id = data;
1874 mutex_lock(&dev->mode_config.mutex);
1875 fb = idr_find(&dev->mode_config.crtc_idr, *id);
1876 /* TODO check that we realy get a framebuffer back. */
1877 if (!fb || (*id != fb->id)) {
1878 DRM_ERROR("mode invalid framebuffer id\n");
1883 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1888 DRM_ERROR("tried to remove a fb that we didn't own\n");
1893 /* TODO release all crtc connected to the framebuffer */
1894 /* TODO unhock the destructor from the buffer object */
1896 if (fb->bo->type == drm_bo_type_kernel)
1897 DRM_ERROR("the bo type should not be of kernel type\n");
1899 list_del(&fb->filp_head);
1900 drm_framebuffer_destroy(fb);
1903 mutex_unlock(&dev->mode_config.mutex);
1908 * drm_mode_getfb - get FB info
1909 * @inode: inode from the ioctl
1910 * @filp: file * from the ioctl
1911 * @cmd: cmd from ioctl
1912 * @arg: arg from ioctl
1917 * Lookup the FB given its ID and return info about it.
1919 * Called by the user via ioctl.
1922 * Zero on success, errno on failure.
1924 int drm_mode_getfb(struct drm_device *dev,
1925 void *data, struct drm_file *file_priv)
1927 struct drm_mode_fb_cmd *r = data;
1928 struct drm_framebuffer *fb;
1931 mutex_lock(&dev->mode_config.mutex);
1932 fb = idr_find(&dev->mode_config.crtc_idr, r->buffer_id);
1933 if (!fb || (r->buffer_id != fb->id)) {
1934 DRM_ERROR("invalid framebuffer id\n");
1939 r->height = fb->height;
1940 r->width = fb->width;
1941 r->depth = fb->depth;
1942 r->bpp = fb->bits_per_pixel;
1943 r->handle = fb->bo->base.hash.key;
1944 r->pitch = fb->pitch;
1947 mutex_unlock(&dev->mode_config.mutex);
1952 * drm_fb_release - remove and free the FBs on this file
1953 * @filp: file * from the ioctl
1956 * Takes mode config lock.
1958 * Destroy all the FBs associated with @filp.
1960 * Called by the user via ioctl.
1963 * Zero on success, errno on failure.
1965 void drm_fb_release(struct file *filp)
1967 struct drm_file *priv = filp->private_data;
1968 struct drm_device *dev = priv->minor->dev;
1969 struct drm_framebuffer *fb, *tfb;
1971 mutex_lock(&dev->mode_config.mutex);
1972 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1973 list_del(&fb->filp_head);
1974 if (fb->bo->type == drm_bo_type_kernel)
1975 DRM_ERROR("the bo type should not be of kernel_type, the kernel will probably explode, why Dave\n");
1977 drm_framebuffer_destroy(fb);
1979 mutex_unlock(&dev->mode_config.mutex);
1986 static int drm_mode_attachmode(struct drm_device *dev,
1987 struct drm_output *output,
1988 struct drm_display_mode *mode)
1992 list_add_tail(&mode->head, &output->user_modes);
1996 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1997 struct drm_display_mode *mode)
1999 struct drm_output *output;
2001 struct drm_display_mode *dup_mode;
2003 list_for_each_entry(output, &dev->mode_config.output_list, head) {
2004 if (output->crtc == crtc) {
2006 dup_mode = drm_mode_duplicate(dev, mode);
2009 ret = drm_mode_attachmode(dev, output, dup_mode);
2017 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2019 static int drm_mode_detachmode(struct drm_device *dev,
2020 struct drm_output *output,
2021 struct drm_display_mode *mode)
2025 struct drm_display_mode *match_mode, *t;
2027 list_for_each_entry_safe(match_mode, t, &output->user_modes, head) {
2028 if (drm_mode_equal(match_mode, mode)) {
2029 list_del(&match_mode->head);
2030 drm_mode_destroy(dev, match_mode);
2042 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2044 struct drm_output *output;
2046 list_for_each_entry(output, &dev->mode_config.output_list, head) {
2047 drm_mode_detachmode(dev, output, mode);
2051 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2054 * drm_fb_attachmode - Attach a user mode to an output
2055 * @inode: inode from the ioctl
2056 * @filp: file * from the ioctl
2057 * @cmd: cmd from ioctl
2058 * @arg: arg from ioctl
2060 * This attaches a user specified mode to an output.
2061 * Called by the user via ioctl.
2064 * Zero on success, errno on failure.
2066 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2067 void *data, struct drm_file *file_priv)
2069 struct drm_mode_mode_cmd *mode_cmd = data;
2070 struct drm_output *output;
2071 struct drm_display_mode *mode;
2072 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2075 mutex_lock(&dev->mode_config.mutex);
2077 output = idr_find(&dev->mode_config.crtc_idr, mode_cmd->output_id);
2078 if (!output || (output->id != mode_cmd->output_id)) {
2083 mode = drm_mode_create(dev);
2089 drm_crtc_convert_umode(mode, umode);
2091 ret = drm_mode_attachmode(dev, output, mode);
2093 mutex_unlock(&dev->mode_config.mutex);
2099 * drm_fb_detachmode - Detach a user specified mode from an output
2100 * @inode: inode from the ioctl
2101 * @filp: file * from the ioctl
2102 * @cmd: cmd from ioctl
2103 * @arg: arg from ioctl
2105 * Called by the user via ioctl.
2108 * Zero on success, errno on failure.
2110 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2111 void *data, struct drm_file *file_priv)
2113 struct drm_mode_mode_cmd *mode_cmd = data;
2114 struct drm_output *output;
2115 struct drm_display_mode mode;
2116 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2119 mutex_lock(&dev->mode_config.mutex);
2121 output = idr_find(&dev->mode_config.crtc_idr, mode_cmd->output_id);
2122 if (!output || (output->id != mode_cmd->output_id)) {
2127 drm_crtc_convert_umode(&mode, umode);
2128 ret = drm_mode_detachmode(dev, output, &mode);
2130 mutex_unlock(&dev->mode_config.mutex);
2134 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2135 const char *name, int num_values)
2137 struct drm_property *property = NULL;
2139 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2144 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2145 if (!property->values)
2149 property->id = drm_idr_get(dev, property);
2150 property->flags = flags;
2151 property->num_values = num_values;
2152 INIT_LIST_HEAD(&property->enum_blob_list);
2155 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2157 list_add_tail(&property->head, &dev->mode_config.property_list);
2163 EXPORT_SYMBOL(drm_property_create);
2165 int drm_property_add_enum(struct drm_property *property, int index,
2166 uint64_t value, const char *name)
2168 struct drm_property_enum *prop_enum;
2170 if (!(property->flags & DRM_MODE_PROP_ENUM))
2173 if (!list_empty(&property->enum_blob_list)) {
2174 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2175 if (prop_enum->value == value) {
2176 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2177 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2183 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2187 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2188 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2189 prop_enum->value = value;
2191 property->values[index] = value;
2192 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2195 EXPORT_SYMBOL(drm_property_add_enum);
2197 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2199 struct drm_property_enum *prop_enum, *pt;
2201 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2202 list_del(&prop_enum->head);
2206 if (property->num_values)
2207 kfree(property->values);
2208 drm_idr_put(dev, property->id);
2209 list_del(&property->head);
2212 EXPORT_SYMBOL(drm_property_destroy);
2214 int drm_output_attach_property(struct drm_output *output,
2215 struct drm_property *property, uint64_t init_val)
2219 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
2220 if (output->property_ids[i] == 0) {
2221 output->property_ids[i] = property->id;
2222 output->property_values[i] = init_val;
2227 if (i == DRM_OUTPUT_MAX_PROPERTY)
2231 EXPORT_SYMBOL(drm_output_attach_property);
2233 int drm_output_property_set_value(struct drm_output *output,
2234 struct drm_property *property, uint64_t value)
2238 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
2239 if (output->property_ids[i] == property->id) {
2240 output->property_values[i] = value;
2245 if (i == DRM_OUTPUT_MAX_PROPERTY)
2249 EXPORT_SYMBOL(drm_output_property_set_value);
2251 int drm_output_property_get_value(struct drm_output *output,
2252 struct drm_property *property, uint64_t *val)
2256 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
2257 if (output->property_ids[i] == property->id) {
2258 *val = output->property_values[i];
2263 if (i == DRM_OUTPUT_MAX_PROPERTY)
2267 EXPORT_SYMBOL(drm_output_property_get_value);
2269 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2270 void *data, struct drm_file *file_priv)
2272 struct drm_mode_get_property *out_resp = data;
2273 struct drm_property *property;
2276 int value_count = 0;
2279 struct drm_property_enum *prop_enum;
2280 struct drm_mode_property_enum __user *enum_ptr;
2281 struct drm_property_blob *prop_blob;
2282 uint32_t *blob_id_ptr;
2283 uint64_t __user *values_ptr;
2284 uint32_t __user *blob_length_ptr;
2286 mutex_lock(&dev->mode_config.mutex);
2287 property = idr_find(&dev->mode_config.crtc_idr, out_resp->prop_id);
2288 if (!property || (property->id != out_resp->prop_id)) {
2293 if (property->flags & DRM_MODE_PROP_ENUM) {
2294 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2296 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2297 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2301 value_count = property->num_values;
2303 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2304 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2305 out_resp->flags = property->flags;
2307 if ((out_resp->count_values >= value_count) && value_count) {
2308 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2309 for (i = 0; i < value_count; i++) {
2310 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2316 out_resp->count_values = value_count;
2318 if (property->flags & DRM_MODE_PROP_ENUM) {
2320 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2322 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2323 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2325 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2330 if (copy_to_user(&enum_ptr[copied].name,
2331 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2338 out_resp->count_enum_blobs = enum_count;
2341 if (property->flags & DRM_MODE_PROP_BLOB) {
2342 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2344 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2345 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2347 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2348 if (put_user(prop_blob->id, blob_id_ptr + copied)) {
2353 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2361 out_resp->count_enum_blobs = enum_count;
2364 mutex_unlock(&dev->mode_config.mutex);
2368 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2371 struct drm_property_blob *blob;
2373 if (!length || !data)
2376 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2380 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2381 blob->length = length;
2383 memcpy(blob->data, data, length);
2385 blob->id = drm_idr_get(dev, blob);
2387 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2391 static void drm_property_destroy_blob(struct drm_device *dev,
2392 struct drm_property_blob *blob)
2394 drm_idr_put(dev, blob->id);
2395 list_del(&blob->head);
2399 int drm_mode_getblob_ioctl(struct drm_device *dev,
2400 void *data, struct drm_file *file_priv)
2402 struct drm_mode_get_blob *out_resp = data;
2403 struct drm_property_blob *blob;
2407 mutex_lock(&dev->mode_config.mutex);
2409 blob = idr_find(&dev->mode_config.crtc_idr, out_resp->blob_id);
2410 if (!blob || (blob->id != out_resp->blob_id)) {
2415 if (out_resp->length == blob->length) {
2416 blob_ptr = (void *)(unsigned long)out_resp->data;
2417 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2422 out_resp->length = blob->length;
2425 mutex_unlock(&dev->mode_config.mutex);
2429 int drm_mode_output_update_edid_property(struct drm_output *output, struct edid *edid)
2431 struct drm_device *dev = output->dev;
2433 if (output->edid_blob_ptr)
2434 drm_property_destroy_blob(dev, output->edid_blob_ptr);
2436 output->edid_blob_ptr = drm_property_create_blob(output->dev, 128, edid);
2438 ret = drm_output_property_set_value(output, dev->mode_config.edid_property, output->edid_blob_ptr->id);
2441 EXPORT_SYMBOL(drm_mode_output_update_edid_property);
2443 int drm_mode_output_property_set_ioctl(struct drm_device *dev,
2444 void *data, struct drm_file *file_priv)
2446 struct drm_mode_output_set_property *out_resp = data;
2447 struct drm_property *property;
2448 struct drm_output *output;
2452 mutex_lock(&dev->mode_config.mutex);
2453 output = idr_find(&dev->mode_config.crtc_idr, out_resp->output_id);
2454 if (!output || (output->id != out_resp->output_id)) {
2458 for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
2459 if (output->property_ids[i] == out_resp->prop_id)
2463 if (i == DRM_OUTPUT_MAX_PROPERTY) {
2467 property = idr_find(&dev->mode_config.crtc_idr, out_resp->prop_id);
2468 if (!property || (property->id != out_resp->prop_id)) {
2472 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2475 if (property->flags & DRM_MODE_PROP_RANGE) {
2476 if (out_resp->value < property->values[0])
2479 if (out_resp->value > property->values[1])
2483 for (i = 0; i < property->num_values; i++) {
2484 if (property->values[i] == out_resp->value) {
2494 if (output->funcs->set_property)
2495 ret = output->funcs->set_property(output, property, out_resp->value);
2498 mutex_unlock(&dev->mode_config.mutex);