2 * drivers/gpu/drm/omapdrm/omap_drv.c
4 * Copyright (C) 2011 Texas Instruments
5 * Author: Rob Clark <rob@ti.com>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
20 #include <linux/wait.h>
22 #include <drm/drm_atomic.h>
23 #include <drm/drm_atomic_helper.h>
24 #include <drm/drm_crtc_helper.h>
25 #include <drm/drm_fb_helper.h>
27 #include "omap_dmm_tiler.h"
30 #define DRIVER_NAME MODULE_NAME
31 #define DRIVER_DESC "OMAP DRM"
32 #define DRIVER_DATE "20110917"
33 #define DRIVER_MAJOR 1
34 #define DRIVER_MINOR 0
35 #define DRIVER_PATCHLEVEL 0
37 static int num_crtc = CONFIG_DRM_OMAP_NUM_CRTCS;
39 MODULE_PARM_DESC(num_crtc, "Number of overlays to use as CRTCs");
40 module_param(num_crtc, int, 0600);
46 /* Notes about mapping DSS and DRM entities:
48 * encoder: manager.. with some extension to allow one primary CRTC
49 * and zero or more video CRTC's to be mapped to one encoder?
50 * connector: dssdev.. manager can be attached/detached from different
54 static void omap_fb_output_poll_changed(struct drm_device *dev)
56 struct omap_drm_private *priv = dev->dev_private;
59 drm_fb_helper_hotplug_event(priv->fbdev);
62 struct omap_atomic_state_commit {
63 struct work_struct work;
64 struct drm_device *dev;
65 struct drm_atomic_state *state;
69 static void omap_atomic_wait_for_completion(struct drm_device *dev,
70 struct drm_atomic_state *old_state)
72 struct drm_crtc_state *old_crtc_state;
73 struct drm_crtc *crtc;
77 for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
78 if (!crtc->state->enable)
81 ret = omap_crtc_wait_pending(crtc);
85 "atomic complete timeout (pipe %u)!\n", i);
89 static void omap_atomic_complete(struct omap_atomic_state_commit *commit)
91 struct drm_device *dev = commit->dev;
92 struct omap_drm_private *priv = dev->dev_private;
93 struct drm_atomic_state *old_state = commit->state;
95 /* Apply the atomic update. */
98 drm_atomic_helper_commit_modeset_disables(dev, old_state);
99 drm_atomic_helper_commit_planes(dev, old_state, false);
100 drm_atomic_helper_commit_modeset_enables(dev, old_state);
102 omap_atomic_wait_for_completion(dev, old_state);
104 drm_atomic_helper_cleanup_planes(dev, old_state);
108 drm_atomic_state_free(old_state);
110 /* Complete the commit, wake up any waiter. */
111 spin_lock(&priv->commit.lock);
112 priv->commit.pending &= ~commit->crtcs;
113 spin_unlock(&priv->commit.lock);
115 wake_up_all(&priv->commit.wait);
120 static void omap_atomic_work(struct work_struct *work)
122 struct omap_atomic_state_commit *commit =
123 container_of(work, struct omap_atomic_state_commit, work);
125 omap_atomic_complete(commit);
128 static bool omap_atomic_is_pending(struct omap_drm_private *priv,
129 struct omap_atomic_state_commit *commit)
133 spin_lock(&priv->commit.lock);
134 pending = priv->commit.pending & commit->crtcs;
135 spin_unlock(&priv->commit.lock);
140 static int omap_atomic_commit(struct drm_device *dev,
141 struct drm_atomic_state *state, bool async)
143 struct omap_drm_private *priv = dev->dev_private;
144 struct omap_atomic_state_commit *commit;
149 ret = drm_atomic_helper_prepare_planes(dev, state);
153 /* Allocate the commit object. */
154 commit = kzalloc(sizeof(*commit), GFP_KERNEL);
155 if (commit == NULL) {
160 INIT_WORK(&commit->work, omap_atomic_work);
162 commit->state = state;
164 /* Wait until all affected CRTCs have completed previous commits and
165 * mark them as pending.
167 for (i = 0; i < dev->mode_config.num_crtc; ++i) {
169 commit->crtcs |= 1 << drm_crtc_index(state->crtcs[i]);
172 wait_event(priv->commit.wait, !omap_atomic_is_pending(priv, commit));
174 spin_lock(&priv->commit.lock);
175 priv->commit.pending |= commit->crtcs;
176 spin_unlock(&priv->commit.lock);
178 /* Keep track of all CRTC events to unlink them in preclose(). */
179 spin_lock_irqsave(&dev->event_lock, flags);
180 for (i = 0; i < dev->mode_config.num_crtc; ++i) {
181 struct drm_crtc_state *cstate = state->crtc_states[i];
183 if (cstate && cstate->event)
184 list_add_tail(&cstate->event->base.link,
185 &priv->commit.events);
187 spin_unlock_irqrestore(&dev->event_lock, flags);
189 /* Swap the state, this is the point of no return. */
190 drm_atomic_helper_swap_state(dev, state);
193 schedule_work(&commit->work);
195 omap_atomic_complete(commit);
200 drm_atomic_helper_cleanup_planes(dev, state);
204 static const struct drm_mode_config_funcs omap_mode_config_funcs = {
205 .fb_create = omap_framebuffer_create,
206 .output_poll_changed = omap_fb_output_poll_changed,
207 .atomic_check = drm_atomic_helper_check,
208 .atomic_commit = omap_atomic_commit,
211 static int get_connector_type(struct omap_dss_device *dssdev)
213 switch (dssdev->type) {
214 case OMAP_DISPLAY_TYPE_HDMI:
215 return DRM_MODE_CONNECTOR_HDMIA;
216 case OMAP_DISPLAY_TYPE_DVI:
217 return DRM_MODE_CONNECTOR_DVID;
219 return DRM_MODE_CONNECTOR_Unknown;
223 static bool channel_used(struct drm_device *dev, enum omap_channel channel)
225 struct omap_drm_private *priv = dev->dev_private;
228 for (i = 0; i < priv->num_crtcs; i++) {
229 struct drm_crtc *crtc = priv->crtcs[i];
231 if (omap_crtc_channel(crtc) == channel)
237 static void omap_disconnect_dssdevs(void)
239 struct omap_dss_device *dssdev = NULL;
241 for_each_dss_dev(dssdev)
242 dssdev->driver->disconnect(dssdev);
245 static int omap_connect_dssdevs(void)
248 struct omap_dss_device *dssdev = NULL;
249 bool no_displays = true;
251 for_each_dss_dev(dssdev) {
252 r = dssdev->driver->connect(dssdev);
253 if (r == -EPROBE_DEFER) {
254 omap_dss_put_device(dssdev);
257 dev_warn(dssdev->dev, "could not connect display: %s\n",
265 return -EPROBE_DEFER;
271 * if we are deferring probe, we disconnect the devices we previously
274 omap_disconnect_dssdevs();
279 static int omap_modeset_create_crtc(struct drm_device *dev, int id,
280 enum omap_channel channel)
282 struct omap_drm_private *priv = dev->dev_private;
283 struct drm_plane *plane;
284 struct drm_crtc *crtc;
286 plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_PRIMARY);
288 return PTR_ERR(plane);
290 crtc = omap_crtc_init(dev, plane, channel, id);
292 BUG_ON(priv->num_crtcs >= ARRAY_SIZE(priv->crtcs));
293 priv->crtcs[id] = crtc;
296 priv->planes[id] = plane;
302 static int omap_modeset_init_properties(struct drm_device *dev)
304 struct omap_drm_private *priv = dev->dev_private;
307 dev->mode_config.rotation_property =
308 drm_mode_create_rotation_property(dev,
309 BIT(DRM_ROTATE_0) | BIT(DRM_ROTATE_90) |
310 BIT(DRM_ROTATE_180) | BIT(DRM_ROTATE_270) |
311 BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y));
312 if (!dev->mode_config.rotation_property)
316 priv->zorder_prop = drm_property_create_range(dev, 0, "zorder", 0, 3);
317 if (!priv->zorder_prop)
323 static int omap_modeset_init(struct drm_device *dev)
325 struct omap_drm_private *priv = dev->dev_private;
326 struct omap_dss_device *dssdev = NULL;
327 int num_ovls = dss_feat_get_num_ovls();
328 int num_mgrs = dss_feat_get_num_mgrs();
333 drm_mode_config_init(dev);
335 omap_drm_irq_install(dev);
337 ret = omap_modeset_init_properties(dev);
342 * We usually don't want to create a CRTC for each manager, at least
343 * not until we have a way to expose private planes to userspace.
344 * Otherwise there would not be enough video pipes left for drm planes.
345 * We use the num_crtc argument to limit the number of crtcs we create.
347 num_crtcs = min3(num_crtc, num_mgrs, num_ovls);
351 for_each_dss_dev(dssdev) {
352 struct drm_connector *connector;
353 struct drm_encoder *encoder;
354 enum omap_channel channel;
355 struct omap_overlay_manager *mgr;
357 if (!omapdss_device_is_connected(dssdev))
360 encoder = omap_encoder_init(dev, dssdev);
363 dev_err(dev->dev, "could not create encoder: %s\n",
368 connector = omap_connector_init(dev,
369 get_connector_type(dssdev), dssdev, encoder);
372 dev_err(dev->dev, "could not create connector: %s\n",
377 BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders));
378 BUG_ON(priv->num_connectors >= ARRAY_SIZE(priv->connectors));
380 priv->encoders[priv->num_encoders++] = encoder;
381 priv->connectors[priv->num_connectors++] = connector;
383 drm_mode_connector_attach_encoder(connector, encoder);
386 * if we have reached the limit of the crtcs we are allowed to
387 * create, let's not try to look for a crtc for this
388 * panel/encoder and onwards, we will, of course, populate the
389 * the possible_crtcs field for all the encoders with the final
390 * set of crtcs we create
396 * get the recommended DISPC channel for this encoder. For now,
397 * we only try to get create a crtc out of the recommended, the
398 * other possible channels to which the encoder can connect are
402 mgr = omapdss_find_mgr_from_display(dssdev);
405 * if this channel hasn't already been taken by a previously
406 * allocated crtc, we create a new crtc for it
408 if (!channel_used(dev, channel)) {
409 ret = omap_modeset_create_crtc(dev, id, channel);
412 "could not create CRTC (channel %u)\n",
422 * we have allocated crtcs according to the need of the panels/encoders,
423 * adding more crtcs here if needed
425 for (; id < num_crtcs; id++) {
427 /* find a free manager for this crtc */
428 for (i = 0; i < num_mgrs; i++) {
429 if (!channel_used(dev, i))
434 /* this shouldn't really happen */
435 dev_err(dev->dev, "no managers left for crtc\n");
439 ret = omap_modeset_create_crtc(dev, id, i);
442 "could not create CRTC (channel %u)\n", i);
448 * Create normal planes for the remaining overlays:
450 for (; id < num_ovls; id++) {
451 struct drm_plane *plane;
453 plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_OVERLAY);
455 return PTR_ERR(plane);
457 BUG_ON(priv->num_planes >= ARRAY_SIZE(priv->planes));
458 priv->planes[priv->num_planes++] = plane;
461 for (i = 0; i < priv->num_encoders; i++) {
462 struct drm_encoder *encoder = priv->encoders[i];
463 struct omap_dss_device *dssdev =
464 omap_encoder_get_dssdev(encoder);
465 struct omap_dss_device *output;
467 output = omapdss_find_output_from_display(dssdev);
469 /* figure out which crtc's we can connect the encoder to: */
470 encoder->possible_crtcs = 0;
471 for (id = 0; id < priv->num_crtcs; id++) {
472 struct drm_crtc *crtc = priv->crtcs[id];
473 enum omap_channel crtc_channel;
475 crtc_channel = omap_crtc_channel(crtc);
477 if (output->dispc_channel == crtc_channel) {
478 encoder->possible_crtcs |= (1 << id);
483 omap_dss_put_device(output);
486 DBG("registered %d planes, %d crtcs, %d encoders and %d connectors\n",
487 priv->num_planes, priv->num_crtcs, priv->num_encoders,
488 priv->num_connectors);
490 dev->mode_config.min_width = 32;
491 dev->mode_config.min_height = 32;
493 /* note: eventually will need some cpu_is_omapXYZ() type stuff here
494 * to fill in these limits properly on different OMAP generations..
496 dev->mode_config.max_width = 2048;
497 dev->mode_config.max_height = 2048;
499 dev->mode_config.funcs = &omap_mode_config_funcs;
501 drm_mode_config_reset(dev);
506 static void omap_modeset_free(struct drm_device *dev)
508 drm_mode_config_cleanup(dev);
516 static int ioctl_get_param(struct drm_device *dev, void *data,
517 struct drm_file *file_priv)
519 struct omap_drm_private *priv = dev->dev_private;
520 struct drm_omap_param *args = data;
522 DBG("%p: param=%llu", dev, args->param);
524 switch (args->param) {
525 case OMAP_PARAM_CHIPSET_ID:
526 args->value = priv->omaprev;
529 DBG("unknown parameter %lld", args->param);
536 static int ioctl_set_param(struct drm_device *dev, void *data,
537 struct drm_file *file_priv)
539 struct drm_omap_param *args = data;
541 switch (args->param) {
543 DBG("unknown parameter %lld", args->param);
550 #define OMAP_BO_USER_MASK 0x00ffffff /* flags settable by userspace */
552 static int ioctl_gem_new(struct drm_device *dev, void *data,
553 struct drm_file *file_priv)
555 struct drm_omap_gem_new *args = data;
556 u32 flags = args->flags & OMAP_BO_USER_MASK;
558 VERB("%p:%p: size=0x%08x, flags=%08x", dev, file_priv,
559 args->size.bytes, flags);
561 return omap_gem_new_handle(dev, file_priv, args->size, flags,
565 static int ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
566 struct drm_file *file_priv)
568 struct drm_omap_gem_cpu_prep *args = data;
569 struct drm_gem_object *obj;
572 VERB("%p:%p: handle=%d, op=%x", dev, file_priv, args->handle, args->op);
574 obj = drm_gem_object_lookup(dev, file_priv, args->handle);
578 ret = omap_gem_op_sync(obj, args->op);
581 ret = omap_gem_op_start(obj, args->op);
583 drm_gem_object_unreference_unlocked(obj);
588 static int ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
589 struct drm_file *file_priv)
591 struct drm_omap_gem_cpu_fini *args = data;
592 struct drm_gem_object *obj;
595 VERB("%p:%p: handle=%d", dev, file_priv, args->handle);
597 obj = drm_gem_object_lookup(dev, file_priv, args->handle);
601 /* XXX flushy, flushy */
605 ret = omap_gem_op_finish(obj, args->op);
607 drm_gem_object_unreference_unlocked(obj);
612 static int ioctl_gem_info(struct drm_device *dev, void *data,
613 struct drm_file *file_priv)
615 struct drm_omap_gem_info *args = data;
616 struct drm_gem_object *obj;
619 VERB("%p:%p: handle=%d", dev, file_priv, args->handle);
621 obj = drm_gem_object_lookup(dev, file_priv, args->handle);
625 args->size = omap_gem_mmap_size(obj);
626 args->offset = omap_gem_mmap_offset(obj);
628 drm_gem_object_unreference_unlocked(obj);
633 static const struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = {
634 DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param, DRM_AUTH),
635 DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
636 DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new, DRM_AUTH),
637 DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep, DRM_AUTH),
638 DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini, DRM_AUTH),
639 DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info, DRM_AUTH),
647 * load - setup chip and create an initial config
649 * @flags: startup flags
651 * The driver load routine has to do several things:
652 * - initialize the memory manager
653 * - allocate initial config memory
654 * - setup the DRM framebuffer with the allocated memory
656 static int dev_load(struct drm_device *dev, unsigned long flags)
658 struct omap_drm_platform_data *pdata = dev->dev->platform_data;
659 struct omap_drm_private *priv;
663 DBG("load: dev=%p", dev);
665 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
669 priv->omaprev = pdata->omaprev;
671 dev->dev_private = priv;
673 priv->wq = alloc_ordered_workqueue("omapdrm", 0);
674 init_waitqueue_head(&priv->commit.wait);
675 spin_lock_init(&priv->commit.lock);
676 INIT_LIST_HEAD(&priv->commit.events);
678 spin_lock_init(&priv->list_lock);
679 INIT_LIST_HEAD(&priv->obj_list);
683 ret = omap_modeset_init(dev);
685 dev_err(dev->dev, "omap_modeset_init failed: ret=%d\n", ret);
686 dev->dev_private = NULL;
691 /* Initialize vblank handling, start with all CRTCs disabled. */
692 ret = drm_vblank_init(dev, priv->num_crtcs);
694 dev_warn(dev->dev, "could not init vblank\n");
696 for (i = 0; i < priv->num_crtcs; i++)
697 drm_crtc_vblank_off(priv->crtcs[i]);
699 priv->fbdev = omap_fbdev_init(dev);
701 /* store off drm_device for use in pm ops */
702 dev_set_drvdata(dev->dev, dev);
704 drm_kms_helper_poll_init(dev);
709 static int dev_unload(struct drm_device *dev)
711 struct omap_drm_private *priv = dev->dev_private;
713 DBG("unload: dev=%p", dev);
715 drm_kms_helper_poll_fini(dev);
718 omap_fbdev_free(dev);
720 omap_modeset_free(dev);
721 omap_gem_deinit(dev);
723 destroy_workqueue(priv->wq);
725 drm_vblank_cleanup(dev);
726 omap_drm_irq_uninstall(dev);
728 kfree(dev->dev_private);
729 dev->dev_private = NULL;
731 dev_set_drvdata(dev->dev, NULL);
736 static int dev_open(struct drm_device *dev, struct drm_file *file)
738 file->driver_priv = NULL;
740 DBG("open: dev=%p, file=%p", dev, file);
746 * lastclose - clean up after all DRM clients have exited
749 * Take care of cleaning up after all DRM clients have exited. In the
750 * mode setting case, we want to restore the kernel's initial mode (just
751 * in case the last client left us in a bad state).
753 static void dev_lastclose(struct drm_device *dev)
757 /* we don't support vga_switcheroo.. so just make sure the fbdev
760 struct omap_drm_private *priv = dev->dev_private;
763 DBG("lastclose: dev=%p", dev);
765 if (dev->mode_config.rotation_property) {
766 /* need to restore default rotation state.. not sure
767 * if there is a cleaner way to restore properties to
768 * default state? Maybe a flag that properties should
769 * automatically be restored to default state on
772 for (i = 0; i < priv->num_crtcs; i++) {
773 drm_object_property_set_value(&priv->crtcs[i]->base,
774 dev->mode_config.rotation_property, 0);
777 for (i = 0; i < priv->num_planes; i++) {
778 drm_object_property_set_value(&priv->planes[i]->base,
779 dev->mode_config.rotation_property, 0);
784 ret = drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
786 DBG("failed to restore crtc mode");
790 static void dev_preclose(struct drm_device *dev, struct drm_file *file)
792 struct omap_drm_private *priv = dev->dev_private;
793 struct drm_pending_event *event;
796 DBG("preclose: dev=%p", dev);
799 * Unlink all pending CRTC events to make sure they won't be queued up
800 * by a pending asynchronous commit.
802 spin_lock_irqsave(&dev->event_lock, flags);
803 list_for_each_entry(event, &priv->commit.events, link) {
804 if (event->file_priv == file) {
805 file->event_space += event->event->length;
806 event->file_priv = NULL;
809 spin_unlock_irqrestore(&dev->event_lock, flags);
812 static void dev_postclose(struct drm_device *dev, struct drm_file *file)
814 DBG("postclose: dev=%p, file=%p", dev, file);
817 static const struct vm_operations_struct omap_gem_vm_ops = {
818 .fault = omap_gem_fault,
819 .open = drm_gem_vm_open,
820 .close = drm_gem_vm_close,
823 static const struct file_operations omapdriver_fops = {
824 .owner = THIS_MODULE,
826 .unlocked_ioctl = drm_ioctl,
827 .release = drm_release,
828 .mmap = omap_gem_mmap,
831 .llseek = noop_llseek,
834 static struct drm_driver omap_drm_driver = {
835 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
838 .unload = dev_unload,
840 .lastclose = dev_lastclose,
841 .preclose = dev_preclose,
842 .postclose = dev_postclose,
843 .set_busid = drm_platform_set_busid,
844 .get_vblank_counter = drm_vblank_no_hw_counter,
845 .enable_vblank = omap_irq_enable_vblank,
846 .disable_vblank = omap_irq_disable_vblank,
847 #ifdef CONFIG_DEBUG_FS
848 .debugfs_init = omap_debugfs_init,
849 .debugfs_cleanup = omap_debugfs_cleanup,
851 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
852 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
853 .gem_prime_export = omap_gem_prime_export,
854 .gem_prime_import = omap_gem_prime_import,
855 .gem_free_object = omap_gem_free_object,
856 .gem_vm_ops = &omap_gem_vm_ops,
857 .dumb_create = omap_gem_dumb_create,
858 .dumb_map_offset = omap_gem_dumb_map_offset,
859 .dumb_destroy = drm_gem_dumb_destroy,
861 .num_ioctls = DRM_OMAP_NUM_IOCTLS,
862 .fops = &omapdriver_fops,
866 .major = DRIVER_MAJOR,
867 .minor = DRIVER_MINOR,
868 .patchlevel = DRIVER_PATCHLEVEL,
871 static int pdev_probe(struct platform_device *device)
875 if (omapdss_is_initialized() == false)
876 return -EPROBE_DEFER;
878 omap_crtc_pre_init();
880 r = omap_connect_dssdevs();
882 omap_crtc_pre_uninit();
886 DBG("%s", device->name);
887 return drm_platform_init(&omap_drm_driver, device);
890 static int pdev_remove(struct platform_device *device)
894 drm_put_dev(platform_get_drvdata(device));
896 omap_disconnect_dssdevs();
897 omap_crtc_pre_uninit();
902 #ifdef CONFIG_PM_SLEEP
903 static int omap_drm_suspend(struct device *dev)
905 struct drm_device *drm_dev = dev_get_drvdata(dev);
907 drm_kms_helper_poll_disable(drm_dev);
912 static int omap_drm_resume(struct device *dev)
914 struct drm_device *drm_dev = dev_get_drvdata(dev);
916 drm_kms_helper_poll_enable(drm_dev);
918 return omap_gem_resume(dev);
922 static SIMPLE_DEV_PM_OPS(omapdrm_pm_ops, omap_drm_suspend, omap_drm_resume);
924 static struct platform_driver pdev = {
927 .pm = &omapdrm_pm_ops,
930 .remove = pdev_remove,
933 static struct platform_driver * const drivers[] = {
938 static int __init omap_drm_init(void)
942 return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
945 static void __exit omap_drm_fini(void)
949 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
952 /* need late_initcall() so we load after dss_driver's are loaded */
953 late_initcall(omap_drm_init);
954 module_exit(omap_drm_fini);
956 MODULE_AUTHOR("Rob Clark <rob@ti.com>");
957 MODULE_DESCRIPTION("OMAP DRM Display Driver");
958 MODULE_ALIAS("platform:" DRIVER_NAME);
959 MODULE_LICENSE("GPL v2");