drivers/gpu/drm/omapdrm/omap_crtc.c

   1 /*
   2  * drivers/gpu/drm/omapdrm/omap_crtc.c
   3  *
   4  * Copyright (C) 2011 Texas Instruments
   5  * Author: Rob Clark <rob@ti.com>
   6  *
   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.
  10  *
  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
  14  * more details.
  15  *
  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/>.
  18  */
  19
  20 #include "omap_drv.h"
  21
  22 #include <drm/drm_mode.h>
  23 #include "drm_crtc.h"
  24 #include "drm_crtc_helper.h"
  25
  26 #define to_omap_crtc(x) container_of(x, struct omap_crtc, base)
  27
  28 struct omap_crtc {
  29         struct drm_crtc base;
  30         struct drm_plane *plane;
  31
  32         const char *name;
  33         int pipe;
  34         enum omap_channel channel;
  35         struct omap_overlay_manager_info info;
  36
  37         /*
  38          * Temporary: eventually this will go away, but it is needed
  39          * for now to keep the output's happy.  (They only need
  40          * mgr->id.)  Eventually this will be replaced w/ something
  41          * more common-panel-framework-y
  42          */
  43         struct omap_overlay_manager *mgr;
  44
  45         struct omap_video_timings timings;
  46         bool enabled;
  47         bool full_update;
  48
  49         struct omap_drm_apply apply;
  50
  51         struct omap_drm_irq apply_irq;
  52         struct omap_drm_irq error_irq;
  53
  54         /* list of in-progress apply's: */
  55         struct list_head pending_applies;
  56
  57         /* list of queued apply's: */
  58         struct list_head queued_applies;
  59
  60         /* for handling queued and in-progress applies: */
  61         struct work_struct apply_work;
  62
  63         /* if there is a pending flip, these will be non-null: */
  64         struct drm_pending_vblank_event *event;
  65         struct drm_framebuffer *old_fb;
  66
  67         /* for handling page flips without caring about what
  68          * the callback is called from.  Possibly we should just
  69          * make omap_gem always call the cb from the worker so
  70          * we don't have to care about this..
  71          *
  72          * XXX maybe fold into apply_work??
  73          */
  74         struct work_struct page_flip_work;
  75 };
  76
  77 uint32_t pipe2vbl(struct drm_crtc *crtc)
  78 {
  79         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
  80
  81         return dispc_mgr_get_vsync_irq(omap_crtc->channel);
  82 }
  83
  84 /*
  85  * Manager-ops, callbacks from output when they need to configure
  86  * the upstream part of the video pipe.
  87  *
  88  * Most of these we can ignore until we add support for command-mode
  89  * panels.. for video-mode the crtc-helpers already do an adequate
  90  * job of sequencing the setup of the video pipe in the proper order
  91  */
  92
  93 /* ovl-mgr-id -> crtc */
  94 static struct omap_crtc *omap_crtcs[8];
  95
  96 /* we can probably ignore these until we support command-mode panels: */
  97 static int omap_crtc_connect(struct omap_overlay_manager *mgr,
  98                 struct omap_dss_device *dst)
  99 {
 100         if (mgr->output)
 101                 return -EINVAL;
 102
 103         if ((mgr->supported_outputs & dst->id) == 0)
 104                 return -EINVAL;
 105
 106         dst->manager = mgr;
 107         mgr->output = dst;
 108
 109         return 0;
 110 }
 111
 112 static void omap_crtc_disconnect(struct omap_overlay_manager *mgr,
 113                 struct omap_dss_device *dst)
 114 {
 115         mgr->output->manager = NULL;
 116         mgr->output = NULL;
 117 }
 118
 119 static void omap_crtc_start_update(struct omap_overlay_manager *mgr)
 120 {
 121 }
 122
 123 static int omap_crtc_enable(struct omap_overlay_manager *mgr)
 124 {
 125         return 0;
 126 }
 127
 128 static void omap_crtc_disable(struct omap_overlay_manager *mgr)
 129 {
 130 }
 131
 132 static void omap_crtc_set_timings(struct omap_overlay_manager *mgr,
 133                 const struct omap_video_timings *timings)
 134 {
 135         struct omap_crtc *omap_crtc = omap_crtcs[mgr->id];
 136         DBG("%s", omap_crtc->name);
 137         omap_crtc->timings = *timings;
 138         omap_crtc->full_update = true;
 139 }
 140
 141 static void omap_crtc_set_lcd_config(struct omap_overlay_manager *mgr,
 142                 const struct dss_lcd_mgr_config *config)
 143 {
 144         struct omap_crtc *omap_crtc = omap_crtcs[mgr->id];
 145         DBG("%s", omap_crtc->name);
 146         dispc_mgr_set_lcd_config(omap_crtc->channel, config);
 147 }
 148
 149 static int omap_crtc_register_framedone_handler(
 150                 struct omap_overlay_manager *mgr,
 151                 void (*handler)(void *), void *data)
 152 {
 153         return 0;
 154 }
 155
 156 static void omap_crtc_unregister_framedone_handler(
 157                 struct omap_overlay_manager *mgr,
 158                 void (*handler)(void *), void *data)
 159 {
 160 }
 161
 162 static const struct dss_mgr_ops mgr_ops = {
 163                 .connect = omap_crtc_connect,
 164                 .disconnect = omap_crtc_disconnect,
 165                 .start_update = omap_crtc_start_update,
 166                 .enable = omap_crtc_enable,
 167                 .disable = omap_crtc_disable,
 168                 .set_timings = omap_crtc_set_timings,
 169                 .set_lcd_config = omap_crtc_set_lcd_config,
 170                 .register_framedone_handler = omap_crtc_register_framedone_handler,
 171                 .unregister_framedone_handler = omap_crtc_unregister_framedone_handler,
 172 };
 173
 174 /*
 175  * CRTC funcs:
 176  */
 177
 178 static void omap_crtc_destroy(struct drm_crtc *crtc)
 179 {
 180         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 181
 182         DBG("%s", omap_crtc->name);
 183
 184         WARN_ON(omap_crtc->apply_irq.registered);
 185         omap_irq_unregister(crtc->dev, &omap_crtc->error_irq);
 186
 187         omap_crtc->plane->funcs->destroy(omap_crtc->plane);
 188         drm_crtc_cleanup(crtc);
 189
 190         kfree(omap_crtc);
 191 }
 192
 193 static void omap_crtc_dpms(struct drm_crtc *crtc, int mode)
 194 {
 195         struct omap_drm_private *priv = crtc->dev->dev_private;
 196         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 197         bool enabled = (mode == DRM_MODE_DPMS_ON);
 198         int i;
 199
 200         DBG("%s: %d", omap_crtc->name, mode);
 201
 202         if (enabled != omap_crtc->enabled) {
 203                 omap_crtc->enabled = enabled;
 204                 omap_crtc->full_update = true;
 205                 omap_crtc_apply(crtc, &omap_crtc->apply);
 206
 207                 /* also enable our private plane: */
 208                 WARN_ON(omap_plane_dpms(omap_crtc->plane, mode));
 209
 210                 /* and any attached overlay planes: */
 211                 for (i = 0; i < priv->num_planes; i++) {
 212                         struct drm_plane *plane = priv->planes[i];
 213                         if (plane->crtc == crtc)
 214                                 WARN_ON(omap_plane_dpms(plane, mode));
 215                 }
 216         }
 217 }
 218
 219 static bool omap_crtc_mode_fixup(struct drm_crtc *crtc,
 220                 const struct drm_display_mode *mode,
 221                 struct drm_display_mode *adjusted_mode)
 222 {
 223         return true;
 224 }
 225
 226 static int omap_crtc_mode_set(struct drm_crtc *crtc,
 227                 struct drm_display_mode *mode,
 228                 struct drm_display_mode *adjusted_mode,
 229                 int x, int y,
 230                 struct drm_framebuffer *old_fb)
 231 {
 232         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 233
 234         mode = adjusted_mode;
 235
 236         DBG("%s: set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
 237                         omap_crtc->name, mode->base.id, mode->name,
 238                         mode->vrefresh, mode->clock,
 239                         mode->hdisplay, mode->hsync_start,
 240                         mode->hsync_end, mode->htotal,
 241                         mode->vdisplay, mode->vsync_start,
 242                         mode->vsync_end, mode->vtotal,
 243                         mode->type, mode->flags);
 244
 245         copy_timings_drm_to_omap(&omap_crtc->timings, mode);
 246         omap_crtc->full_update = true;
 247
 248         return omap_plane_mode_set(omap_crtc->plane, crtc, crtc->primary->fb,
 249                         0, 0, mode->hdisplay, mode->vdisplay,
 250                         x << 16, y << 16,
 251                         mode->hdisplay << 16, mode->vdisplay << 16,
 252                         NULL, NULL);
 253 }
 254
 255 static void omap_crtc_prepare(struct drm_crtc *crtc)
 256 {
 257         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 258         DBG("%s", omap_crtc->name);
 259         omap_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
 260 }
 261
 262 static void omap_crtc_commit(struct drm_crtc *crtc)
 263 {
 264         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 265         DBG("%s", omap_crtc->name);
 266         omap_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
 267 }
 268
 269 static int omap_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
 270                 struct drm_framebuffer *old_fb)
 271 {
 272         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 273         struct drm_plane *plane = omap_crtc->plane;
 274         struct drm_display_mode *mode = &crtc->mode;
 275
 276         return omap_plane_mode_set(plane, crtc, crtc->primary->fb,
 277                         0, 0, mode->hdisplay, mode->vdisplay,
 278                         x << 16, y << 16,
 279                         mode->hdisplay << 16, mode->vdisplay << 16,
 280                         NULL, NULL);
 281 }
 282
 283 static void vblank_cb(void *arg)
 284 {
 285         struct drm_crtc *crtc = arg;
 286         struct drm_device *dev = crtc->dev;
 287         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 288         unsigned long flags;
 289
 290         spin_lock_irqsave(&dev->event_lock, flags);
 291
 292         /* wakeup userspace */
 293         if (omap_crtc->event)
 294                 drm_send_vblank_event(dev, omap_crtc->pipe, omap_crtc->event);
 295
 296         omap_crtc->event = NULL;
 297         omap_crtc->old_fb = NULL;
 298
 299         spin_unlock_irqrestore(&dev->event_lock, flags);
 300 }
 301
 302 static void page_flip_worker(struct work_struct *work)
 303 {
 304         struct omap_crtc *omap_crtc =
 305                         container_of(work, struct omap_crtc, page_flip_work);
 306         struct drm_crtc *crtc = &omap_crtc->base;
 307         struct drm_display_mode *mode = &crtc->mode;
 308         struct drm_gem_object *bo;
 309
 310         mutex_lock(&crtc->mutex);
 311         omap_plane_mode_set(omap_crtc->plane, crtc, crtc->primary->fb,
 312                         0, 0, mode->hdisplay, mode->vdisplay,
 313                         crtc->x << 16, crtc->y << 16,
 314                         mode->hdisplay << 16, mode->vdisplay << 16,
 315                         vblank_cb, crtc);
 316         mutex_unlock(&crtc->mutex);
 317
 318         bo = omap_framebuffer_bo(crtc->primary->fb, 0);
 319         drm_gem_object_unreference_unlocked(bo);
 320 }
 321
 322 static void page_flip_cb(void *arg)
 323 {
 324         struct drm_crtc *crtc = arg;
 325         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 326         struct omap_drm_private *priv = crtc->dev->dev_private;
 327
 328         /* avoid assumptions about what ctxt we are called from: */
 329         queue_work(priv->wq, &omap_crtc->page_flip_work);
 330 }
 331
 332 static int omap_crtc_page_flip_locked(struct drm_crtc *crtc,
 333                  struct drm_framebuffer *fb,
 334                  struct drm_pending_vblank_event *event,
 335                  uint32_t page_flip_flags)
 336 {
 337         struct drm_device *dev = crtc->dev;
 338         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 339         struct drm_plane *primary = crtc->primary;
 340         struct drm_gem_object *bo;
 341
 342         DBG("%d -> %d (event=%p)", primary->fb ? primary->fb->base.id : -1,
 343                         fb->base.id, event);
 344
 345         if (omap_crtc->old_fb) {
 346                 dev_err(dev->dev, "already a pending flip\n");
 347                 return -EINVAL;
 348         }
 349
 350         omap_crtc->event = event;
 351         primary->fb = fb;
 352
 353         /*
 354          * Hold a reference temporarily until the crtc is updated
 355          * and takes the reference to the bo.  This avoids it
 356          * getting freed from under us:
 357          */
 358         bo = omap_framebuffer_bo(fb, 0);
 359         drm_gem_object_reference(bo);
 360
 361         omap_gem_op_async(bo, OMAP_GEM_READ, page_flip_cb, crtc);
 362
 363         return 0;
 364 }
 365
 366 static int omap_crtc_set_property(struct drm_crtc *crtc,
 367                 struct drm_property *property, uint64_t val)
 368 {
 369         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 370         struct omap_drm_private *priv = crtc->dev->dev_private;
 371
 372         if (property == priv->rotation_prop) {
 373                 crtc->invert_dimensions =
 374                                 !!(val & ((1LL << DRM_ROTATE_90) | (1LL << DRM_ROTATE_270)));
 375         }
 376
 377         return omap_plane_set_property(omap_crtc->plane, property, val);
 378 }
 379
 380 static const struct drm_crtc_funcs omap_crtc_funcs = {
 381         .set_config = drm_crtc_helper_set_config,
 382         .destroy = omap_crtc_destroy,
 383         .page_flip = omap_crtc_page_flip_locked,
 384         .set_property = omap_crtc_set_property,
 385 };
 386
 387 static const struct drm_crtc_helper_funcs omap_crtc_helper_funcs = {
 388         .dpms = omap_crtc_dpms,
 389         .mode_fixup = omap_crtc_mode_fixup,
 390         .mode_set = omap_crtc_mode_set,
 391         .prepare = omap_crtc_prepare,
 392         .commit = omap_crtc_commit,
 393         .mode_set_base = omap_crtc_mode_set_base,
 394 };
 395
 396 const struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc)
 397 {
 398         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 399         return &omap_crtc->timings;
 400 }
 401
 402 enum omap_channel omap_crtc_channel(struct drm_crtc *crtc)
 403 {
 404         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 405         return omap_crtc->channel;
 406 }
 407
 408 static void omap_crtc_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
 409 {
 410         struct omap_crtc *omap_crtc =
 411                         container_of(irq, struct omap_crtc, error_irq);
 412         struct drm_crtc *crtc = &omap_crtc->base;
 413         DRM_ERROR("%s: errors: %08x\n", omap_crtc->name, irqstatus);
 414         /* avoid getting in a flood, unregister the irq until next vblank */
 415         __omap_irq_unregister(crtc->dev, &omap_crtc->error_irq);
 416 }
 417
 418 static void omap_crtc_apply_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
 419 {
 420         struct omap_crtc *omap_crtc =
 421                         container_of(irq, struct omap_crtc, apply_irq);
 422         struct drm_crtc *crtc = &omap_crtc->base;
 423
 424         if (!omap_crtc->error_irq.registered)
 425                 __omap_irq_register(crtc->dev, &omap_crtc->error_irq);
 426
 427         if (!dispc_mgr_go_busy(omap_crtc->channel)) {
 428                 struct omap_drm_private *priv =
 429                                 crtc->dev->dev_private;
 430                 DBG("%s: apply done", omap_crtc->name);
 431                 __omap_irq_unregister(crtc->dev, &omap_crtc->apply_irq);
 432                 queue_work(priv->wq, &omap_crtc->apply_work);
 433         }
 434 }
 435
 436 static void apply_worker(struct work_struct *work)
 437 {
 438         struct omap_crtc *omap_crtc =
 439                         container_of(work, struct omap_crtc, apply_work);
 440         struct drm_crtc *crtc = &omap_crtc->base;
 441         struct drm_device *dev = crtc->dev;
 442         struct omap_drm_apply *apply, *n;
 443         bool need_apply;
 444
 445         /*
 446          * Synchronize everything on mode_config.mutex, to keep
 447          * the callbacks and list modification all serialized
 448          * with respect to modesetting ioctls from userspace.
 449          */
 450         mutex_lock(&crtc->mutex);
 451         dispc_runtime_get();
 452
 453         /*
 454          * If we are still pending a previous update, wait.. when the
 455          * pending update completes, we get kicked again.
 456          */
 457         if (omap_crtc->apply_irq.registered)
 458                 goto out;
 459
 460         /* finish up previous apply's: */
 461         list_for_each_entry_safe(apply, n,
 462                         &omap_crtc->pending_applies, pending_node) {
 463                 apply->post_apply(apply);
 464                 list_del(&apply->pending_node);
 465         }
 466
 467         need_apply = !list_empty(&omap_crtc->queued_applies);
 468
 469         /* then handle the next round of of queued apply's: */
 470         list_for_each_entry_safe(apply, n,
 471                         &omap_crtc->queued_applies, queued_node) {
 472                 apply->pre_apply(apply);
 473                 list_del(&apply->queued_node);
 474                 apply->queued = false;
 475                 list_add_tail(&apply->pending_node,
 476                                 &omap_crtc->pending_applies);
 477         }
 478
 479         if (need_apply) {
 480                 enum omap_channel channel = omap_crtc->channel;
 481
 482                 DBG("%s: GO", omap_crtc->name);
 483
 484                 if (dispc_mgr_is_enabled(channel)) {
 485                         omap_irq_register(dev, &omap_crtc->apply_irq);
 486                         dispc_mgr_go(channel);
 487                 } else {
 488                         struct omap_drm_private *priv = dev->dev_private;
 489                         queue_work(priv->wq, &omap_crtc->apply_work);
 490                 }
 491         }
 492
 493 out:
 494         dispc_runtime_put();
 495         mutex_unlock(&crtc->mutex);
 496 }
 497
 498 int omap_crtc_apply(struct drm_crtc *crtc,
 499                 struct omap_drm_apply *apply)
 500 {
 501         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 502
 503         WARN_ON(!mutex_is_locked(&crtc->mutex));
 504
 505         /* no need to queue it again if it is already queued: */
 506         if (apply->queued)
 507                 return 0;
 508
 509         apply->queued = true;
 510         list_add_tail(&apply->queued_node, &omap_crtc->queued_applies);
 511
 512         /*
 513          * If there are no currently pending updates, then go ahead and
 514          * kick the worker immediately, otherwise it will run again when
 515          * the current update finishes.
 516          */
 517         if (list_empty(&omap_crtc->pending_applies)) {
 518                 struct omap_drm_private *priv = crtc->dev->dev_private;
 519                 queue_work(priv->wq, &omap_crtc->apply_work);
 520         }
 521
 522         return 0;
 523 }
 524
 525 /* called only from apply */
 526 static void set_enabled(struct drm_crtc *crtc, bool enable)
 527 {
 528         struct drm_device *dev = crtc->dev;
 529         struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
 530         enum omap_channel channel = omap_crtc->channel;
 531         struct omap_irq_wait *wait = NULL;
 532
 533         if (dispc_mgr_is_enabled(channel) == enable)
 534                 return;
 535
 536         /* ignore sync-lost irqs during enable/disable */
 537         omap_irq_unregister(crtc->dev, &omap_crtc->error_irq);
 538
 539         if (dispc_mgr_get_framedone_irq(channel)) {
 540                 if (!enable) {
 541                         wait = omap_irq_wait_init(dev,
 542                                         dispc_mgr_get_framedone_irq(channel), 1);
 543                 }
 544         } else {
 545                 /*
 546                  * When we disable digit output, we need to wait until fields
 547                  * are done.  Otherwise the DSS is still working, and turning
 548                  * off the clocks prevents DSS from going to OFF mode. And when
 549                  * enabling, we need to wait for the extra sync losts
 550                  */
 551                 wait = omap_irq_wait_init(dev,
 552                                 dispc_mgr_get_vsync_irq(channel), 2);
 553         }
 554
 555         dispc_mgr_enable(channel, enable);
 556
 557         if (wait) {
 558                 int ret = omap_irq_wait(dev, wait, msecs_to_jiffies(100));
 559                 if (ret) {
 560                         dev_err(dev->dev, "%s: timeout waiting for %s\n",
 561                                         omap_crtc->name, enable ? "enable" : "disable");
 562                 }
 563         }
 564
 565         omap_irq_register(crtc->dev, &omap_crtc->error_irq);
 566 }
 567
 568 static void omap_crtc_pre_apply(struct omap_drm_apply *apply)
 569 {
 570         struct omap_crtc *omap_crtc =
 571                         container_of(apply, struct omap_crtc, apply);
 572         struct drm_crtc *crtc = &omap_crtc->base;
 573         struct drm_encoder *encoder = NULL;
 574
 575         DBG("%s: enabled=%d, full=%d", omap_crtc->name,
 576                         omap_crtc->enabled, omap_crtc->full_update);
 577
 578         if (omap_crtc->full_update) {
 579                 struct omap_drm_private *priv = crtc->dev->dev_private;
 580                 int i;
 581                 for (i = 0; i < priv->num_encoders; i++) {
 582                         if (priv->encoders[i]->crtc == crtc) {
 583                                 encoder = priv->encoders[i];
 584                                 break;
 585                         }
 586                 }
 587         }
 588
 589         if (!omap_crtc->enabled) {
 590                 set_enabled(&omap_crtc->base, false);
 591                 if (encoder)
 592                         omap_encoder_set_enabled(encoder, false);
 593         } else {
 594                 if (encoder) {
 595                         omap_encoder_set_enabled(encoder, false);
 596                         omap_encoder_update(encoder, omap_crtc->mgr,
 597                                         &omap_crtc->timings);
 598                         omap_encoder_set_enabled(encoder, true);
 599                         omap_crtc->full_update = false;
 600                 }
 601
 602                 dispc_mgr_setup(omap_crtc->channel, &omap_crtc->info);
 603                 dispc_mgr_set_timings(omap_crtc->channel,
 604                                 &omap_crtc->timings);
 605                 set_enabled(&omap_crtc->base, true);
 606         }
 607
 608         omap_crtc->full_update = false;
 609 }
 610
 611 static void omap_crtc_post_apply(struct omap_drm_apply *apply)
 612 {
 613         /* nothing needed for post-apply */
 614 }
 615
 616 static const char *channel_names[] = {
 617                 [OMAP_DSS_CHANNEL_LCD] = "lcd",
 618                 [OMAP_DSS_CHANNEL_DIGIT] = "tv",
 619                 [OMAP_DSS_CHANNEL_LCD2] = "lcd2",
 620 };
 621
 622 void omap_crtc_pre_init(void)
 623 {
 624         dss_install_mgr_ops(&mgr_ops);
 625 }
 626
 627 void omap_crtc_pre_uninit(void)
 628 {
 629         dss_uninstall_mgr_ops();
 630 }
 631
 632 /* initialize crtc */
 633 struct drm_crtc *omap_crtc_init(struct drm_device *dev,
 634                 struct drm_plane *plane, enum omap_channel channel, int id)
 635 {
 636         struct drm_crtc *crtc = NULL;
 637         struct omap_crtc *omap_crtc;
 638         struct omap_overlay_manager_info *info;
 639
 640         DBG("%s", channel_names[channel]);
 641
 642         omap_crtc = kzalloc(sizeof(*omap_crtc), GFP_KERNEL);
 643         if (!omap_crtc)
 644                 goto fail;
 645
 646         crtc = &omap_crtc->base;
 647
 648         INIT_WORK(&omap_crtc->page_flip_work, page_flip_worker);
 649         INIT_WORK(&omap_crtc->apply_work, apply_worker);
 650
 651         INIT_LIST_HEAD(&omap_crtc->pending_applies);
 652         INIT_LIST_HEAD(&omap_crtc->queued_applies);
 653
 654         omap_crtc->apply.pre_apply  = omap_crtc_pre_apply;
 655         omap_crtc->apply.post_apply = omap_crtc_post_apply;
 656
 657         omap_crtc->channel = channel;
 658         omap_crtc->plane = plane;
 659         omap_crtc->plane->crtc = crtc;
 660         omap_crtc->name = channel_names[channel];
 661         omap_crtc->pipe = id;
 662
 663         omap_crtc->apply_irq.irqmask = pipe2vbl(crtc);
 664         omap_crtc->apply_irq.irq = omap_crtc_apply_irq;
 665
 666         omap_crtc->error_irq.irqmask =
 667                         dispc_mgr_get_sync_lost_irq(channel);
 668         omap_crtc->error_irq.irq = omap_crtc_error_irq;
 669         omap_irq_register(dev, &omap_crtc->error_irq);
 670
 671         /* temporary: */
 672         omap_crtc->mgr = omap_dss_get_overlay_manager(channel);
 673
 674         /* TODO: fix hard-coded setup.. add properties! */
 675         info = &omap_crtc->info;
 676         info->default_color = 0x00000000;
 677         info->trans_key = 0x00000000;
 678         info->trans_key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
 679         info->trans_enabled = false;
 680
 681         drm_crtc_init(dev, crtc, &omap_crtc_funcs);
 682         drm_crtc_helper_add(crtc, &omap_crtc_helper_funcs);
 683
 684         omap_plane_install_properties(omap_crtc->plane, &crtc->base);
 685
 686         omap_crtcs[channel] = omap_crtc;
 687
 688         return crtc;
 689
 690 fail:
 691         if (crtc)
 692                 omap_crtc_destroy(crtc);
 693
 694         return NULL;
 695 }