drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_kms.h"
  29
  30 #define vmw_crtc_to_ldu(x) \
  31         container_of(x, struct vmw_legacy_display_unit, base.crtc)
  32 #define vmw_encoder_to_ldu(x) \
  33         container_of(x, struct vmw_legacy_display_unit, base.encoder)
  34 #define vmw_connector_to_ldu(x) \
  35         container_of(x, struct vmw_legacy_display_unit, base.connector)
  36
  37 struct vmw_legacy_display {
  38         struct list_head active;
  39
  40         unsigned num_active;
  41         unsigned last_num_active;
  42
  43         struct vmw_framebuffer *fb;
  44 };
  45
  46 /**
  47  * Display unit using the legacy register interface.
  48  */
  49 struct vmw_legacy_display_unit {
  50         struct vmw_display_unit base;
  51
  52         struct list_head active;
  53 };
  54
  55 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
  56 {
  57         list_del_init(&ldu->active);
  58         vmw_display_unit_cleanup(&ldu->base);
  59         kfree(ldu);
  60 }
  61
  62
  63 /*
  64  * Legacy Display Unit CRTC functions
  65  */
  66
  67 static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
  68 {
  69 }
  70
  71 static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
  72 {
  73 }
  74
  75 static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
  76                                    u16 *r, u16 *g, u16 *b,
  77                                    uint32_t size)
  78 {
  79 }
  80
  81 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
  82 {
  83         vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
  84 }
  85
  86 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
  87 {
  88         struct vmw_legacy_display *lds = dev_priv->ldu_priv;
  89         struct vmw_legacy_display_unit *entry;
  90         struct drm_framebuffer *fb = NULL;
  91         struct drm_crtc *crtc = NULL;
  92         int i = 0;
  93
  94         /* If there is no display topology the host just assumes
  95          * that the guest will set the same layout as the host.
  96          */
  97         if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
  98                 int w = 0, h = 0;
  99                 list_for_each_entry(entry, &lds->active, active) {
 100                         crtc = &entry->base.crtc;
 101                         w = max(w, crtc->x + crtc->mode.hdisplay);
 102                         h = max(h, crtc->y + crtc->mode.vdisplay);
 103                         i++;
 104                 }
 105
 106                 if (crtc == NULL)
 107                         return 0;
 108                 fb = entry->base.crtc.fb;
 109
 110                 vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
 111                                    fb->bits_per_pixel, fb->depth);
 112
 113                 return 0;
 114         }
 115
 116         for (i = 0; i < lds->last_num_active; i++) {
 117                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
 118                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
 119                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, 0);
 120                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, 0);
 121                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, 0);
 122                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, 0);
 123                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
 124         }
 125
 126         if (!list_empty(&lds->active)) {
 127                 entry = list_entry(lds->active.next, typeof(*entry), active);
 128                 fb = entry->base.crtc.fb;
 129
 130                 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
 131                                    fb->bits_per_pixel, fb->depth);
 132         }
 133
 134         i = 0;
 135         list_for_each_entry(entry, &lds->active, active) {
 136                 crtc = &entry->base.crtc;
 137
 138                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
 139                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
 140                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
 141                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
 142                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
 143                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
 144                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
 145
 146                 i++;
 147         }
 148
 149         /* Make sure we always show something. */
 150         vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, i ? i : 1);
 151
 152         BUG_ON(i != lds->num_active);
 153
 154         lds->last_num_active = lds->num_active;
 155
 156         return 0;
 157 }
 158
 159 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
 160                               struct vmw_legacy_display_unit *ldu)
 161 {
 162         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 163         if (list_empty(&ldu->active))
 164                 return 0;
 165
 166         /* Must init otherwise list_empty(&ldu->active) will not work. */
 167         list_del_init(&ldu->active);
 168         if (--(ld->num_active) == 0) {
 169                 BUG_ON(!ld->fb);
 170                 if (ld->fb->unpin)
 171                         ld->fb->unpin(ld->fb);
 172                 ld->fb = NULL;
 173         }
 174
 175         return 0;
 176 }
 177
 178 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
 179                               struct vmw_legacy_display_unit *ldu,
 180                               struct vmw_framebuffer *vfb)
 181 {
 182         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 183         struct vmw_legacy_display_unit *entry;
 184         struct list_head *at;
 185
 186         BUG_ON(!ld->num_active && ld->fb);
 187         if (vfb != ld->fb) {
 188                 if (ld->fb && ld->fb->unpin)
 189                         ld->fb->unpin(ld->fb);
 190                 if (vfb->pin)
 191                         vfb->pin(vfb);
 192                 ld->fb = vfb;
 193         }
 194
 195         if (!list_empty(&ldu->active))
 196                 return 0;
 197
 198         at = &ld->active;
 199         list_for_each_entry(entry, &ld->active, active) {
 200                 if (entry->base.unit > ldu->base.unit)
 201                         break;
 202
 203                 at = &entry->active;
 204         }
 205
 206         list_add(&ldu->active, at);
 207
 208         ld->num_active++;
 209
 210         return 0;
 211 }
 212
 213 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
 214 {
 215         struct vmw_private *dev_priv;
 216         struct vmw_legacy_display_unit *ldu;
 217         struct drm_connector *connector;
 218         struct drm_display_mode *mode;
 219         struct drm_encoder *encoder;
 220         struct vmw_framebuffer *vfb;
 221         struct drm_framebuffer *fb;
 222         struct drm_crtc *crtc;
 223
 224         if (!set)
 225                 return -EINVAL;
 226
 227         if (!set->crtc)
 228                 return -EINVAL;
 229
 230         /* get the ldu */
 231         crtc = set->crtc;
 232         ldu = vmw_crtc_to_ldu(crtc);
 233         vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
 234         dev_priv = vmw_priv(crtc->dev);
 235
 236         if (set->num_connectors > 1) {
 237                 DRM_ERROR("to many connectors\n");
 238                 return -EINVAL;
 239         }
 240
 241         if (set->num_connectors == 1 &&
 242             set->connectors[0] != &ldu->base.connector) {
 243                 DRM_ERROR("connector doesn't match %p %p\n",
 244                         set->connectors[0], &ldu->base.connector);
 245                 return -EINVAL;
 246         }
 247
 248         /* ldu only supports one fb active at the time */
 249         if (dev_priv->ldu_priv->fb && vfb &&
 250             !(dev_priv->ldu_priv->num_active == 1 &&
 251               !list_empty(&ldu->active)) &&
 252             dev_priv->ldu_priv->fb != vfb) {
 253                 DRM_ERROR("Multiple framebuffers not supported\n");
 254                 return -EINVAL;
 255         }
 256
 257         /* since they always map one to one these are safe */
 258         connector = &ldu->base.connector;
 259         encoder = &ldu->base.encoder;
 260
 261         /* should we turn the crtc off? */
 262         if (set->num_connectors == 0 || !set->mode || !set->fb) {
 263
 264                 connector->encoder = NULL;
 265                 encoder->crtc = NULL;
 266                 crtc->fb = NULL;
 267
 268                 vmw_ldu_del_active(dev_priv, ldu);
 269
 270                 vmw_ldu_commit_list(dev_priv);
 271
 272                 return 0;
 273         }
 274
 275
 276         /* we now know we want to set a mode */
 277         mode = set->mode;
 278         fb = set->fb;
 279
 280         if (set->x + mode->hdisplay > fb->width ||
 281             set->y + mode->vdisplay > fb->height) {
 282                 DRM_ERROR("set outside of framebuffer\n");
 283                 return -EINVAL;
 284         }
 285
 286         vmw_fb_off(dev_priv);
 287
 288         crtc->fb = fb;
 289         encoder->crtc = crtc;
 290         connector->encoder = encoder;
 291         crtc->x = set->x;
 292         crtc->y = set->y;
 293         crtc->mode = *mode;
 294
 295         vmw_ldu_add_active(dev_priv, ldu, vfb);
 296
 297         vmw_ldu_commit_list(dev_priv);
 298
 299         return 0;
 300 }
 301
 302 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
 303         .save = vmw_ldu_crtc_save,
 304         .restore = vmw_ldu_crtc_restore,
 305         .cursor_set = vmw_du_crtc_cursor_set,
 306         .cursor_move = vmw_du_crtc_cursor_move,
 307         .gamma_set = vmw_ldu_crtc_gamma_set,
 308         .destroy = vmw_ldu_crtc_destroy,
 309         .set_config = vmw_ldu_crtc_set_config,
 310 };
 311
 312 /*
 313  * Legacy Display Unit encoder functions
 314  */
 315
 316 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
 317 {
 318         vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
 319 }
 320
 321 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
 322         .destroy = vmw_ldu_encoder_destroy,
 323 };
 324
 325 /*
 326  * Legacy Display Unit connector functions
 327  */
 328
 329 static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
 330 {
 331 }
 332
 333 static void vmw_ldu_connector_save(struct drm_connector *connector)
 334 {
 335 }
 336
 337 static void vmw_ldu_connector_restore(struct drm_connector *connector)
 338 {
 339 }
 340
 341 static enum drm_connector_status
 342         vmw_ldu_connector_detect(struct drm_connector *connector)
 343 {
 344         /* XXX vmwctrl should control connection status */
 345         if (vmw_connector_to_ldu(connector)->base.unit == 0)
 346                 return connector_status_connected;
 347         return connector_status_disconnected;
 348 }
 349
 350 static struct drm_display_mode vmw_ldu_connector_builtin[] = {
 351         /* 640x480@60Hz */
 352         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
 353                    752, 800, 0, 480, 489, 492, 525, 0,
 354                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 355         /* 800x600@60Hz */
 356         { DRM_MODE("800x600",
 357                    DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 358                    40000, 800, 840, 968, 1056, 0, 600, 601, 605, 628,
 359                    0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 360         /* 1024x768@60Hz */
 361         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
 362                    1184, 1344, 0, 768, 771, 777, 806, 0,
 363                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 364         /* 1152x864@75Hz */
 365         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
 366                    1344, 1600, 0, 864, 865, 868, 900, 0,
 367                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 368         /* 1280x768@60Hz */
 369         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
 370                    1472, 1664, 0, 768, 771, 778, 798, 0,
 371                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 372         /* 1280x800@60Hz */
 373         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
 374                    1480, 1680, 0, 800, 803, 809, 831, 0,
 375                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
 376         /* 1280x960@60Hz */
 377         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
 378                    1488, 1800, 0, 960, 961, 964, 1000, 0,
 379                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 380         /* 1280x1024@60Hz */
 381         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
 382                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
 383                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 384         /* 1360x768@60Hz */
 385         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
 386                    1536, 1792, 0, 768, 771, 777, 795, 0,
 387                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 388         /* 1440x1050@60Hz */
 389         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
 390                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
 391                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 392         /* 1440x900@60Hz */
 393         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
 394                    1672, 1904, 0, 900, 903, 909, 934, 0,
 395                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 396         /* 1600x1200@60Hz */
 397         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
 398                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
 399                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 400         /* 1680x1050@60Hz */
 401         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
 402                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
 403                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 404         /* 1792x1344@60Hz */
 405         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
 406                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
 407                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 408         /* 1853x1392@60Hz */
 409         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
 410                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
 411                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 412         /* 1920x1200@60Hz */
 413         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
 414                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
 415                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 416         /* 1920x1440@60Hz */
 417         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
 418                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
 419                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 420         /* 2560x1600@60Hz */
 421         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
 422                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
 423                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 424         /* Terminate */
 425         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
 426 };
 427
 428 static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
 429                                         uint32_t max_width, uint32_t max_height)
 430 {
 431         struct drm_device *dev = connector->dev;
 432         struct drm_display_mode *mode = NULL;
 433         int i;
 434
 435         for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
 436                 if (vmw_ldu_connector_builtin[i].hdisplay > max_width ||
 437                     vmw_ldu_connector_builtin[i].vdisplay > max_height)
 438                         continue;
 439
 440                 mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
 441                 if (!mode)
 442                         return 0;
 443                 mode->vrefresh = drm_mode_vrefresh(mode);
 444
 445                 drm_mode_probed_add(connector, mode);
 446         }
 447
 448         drm_mode_connector_list_update(connector);
 449
 450         return 1;
 451 }
 452
 453 static int vmw_ldu_connector_set_property(struct drm_connector *connector,
 454                                           struct drm_property *property,
 455                                           uint64_t val)
 456 {
 457         return 0;
 458 }
 459
 460 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
 461 {
 462         vmw_ldu_destroy(vmw_connector_to_ldu(connector));
 463 }
 464
 465 static struct drm_connector_funcs vmw_legacy_connector_funcs = {
 466         .dpms = vmw_ldu_connector_dpms,
 467         .save = vmw_ldu_connector_save,
 468         .restore = vmw_ldu_connector_restore,
 469         .detect = vmw_ldu_connector_detect,
 470         .fill_modes = vmw_ldu_connector_fill_modes,
 471         .set_property = vmw_ldu_connector_set_property,
 472         .destroy = vmw_ldu_connector_destroy,
 473 };
 474
 475 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
 476 {
 477         struct vmw_legacy_display_unit *ldu;
 478         struct drm_device *dev = dev_priv->dev;
 479         struct drm_connector *connector;
 480         struct drm_encoder *encoder;
 481         struct drm_crtc *crtc;
 482
 483         ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
 484         if (!ldu)
 485                 return -ENOMEM;
 486
 487         ldu->base.unit = unit;
 488         crtc = &ldu->base.crtc;
 489         encoder = &ldu->base.encoder;
 490         connector = &ldu->base.connector;
 491
 492         INIT_LIST_HEAD(&ldu->active);
 493
 494         drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
 495                            DRM_MODE_CONNECTOR_LVDS);
 496         connector->status = vmw_ldu_connector_detect(connector);
 497
 498         drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
 499                          DRM_MODE_ENCODER_LVDS);
 500         drm_mode_connector_attach_encoder(connector, encoder);
 501         encoder->possible_crtcs = (1 << unit);
 502         encoder->possible_clones = 0;
 503
 504         drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
 505
 506         drm_connector_attach_property(connector,
 507                                       dev->mode_config.dirty_info_property,
 508                                       1);
 509
 510         return 0;
 511 }
 512
 513 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
 514 {
 515         if (dev_priv->ldu_priv) {
 516                 DRM_INFO("ldu system already on\n");
 517                 return -EINVAL;
 518         }
 519
 520         dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));
 521
 522         if (!dev_priv->ldu_priv)
 523                 return -ENOMEM;
 524
 525         INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
 526         dev_priv->ldu_priv->num_active = 0;
 527         dev_priv->ldu_priv->last_num_active = 0;
 528         dev_priv->ldu_priv->fb = NULL;
 529
 530         drm_mode_create_dirty_info_property(dev_priv->dev);
 531
 532         vmw_ldu_init(dev_priv, 0);
 533         /* for old hardware without multimon only enable one display */
 534         if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
 535                 vmw_ldu_init(dev_priv, 1);
 536                 vmw_ldu_init(dev_priv, 2);
 537                 vmw_ldu_init(dev_priv, 3);
 538                 vmw_ldu_init(dev_priv, 4);
 539                 vmw_ldu_init(dev_priv, 5);
 540                 vmw_ldu_init(dev_priv, 6);
 541                 vmw_ldu_init(dev_priv, 7);
 542         }
 543
 544         return 0;
 545 }
 546
 547 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
 548 {
 549         if (!dev_priv->ldu_priv)
 550                 return -ENOSYS;
 551
 552         BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
 553
 554         kfree(dev_priv->ldu_priv);
 555
 556         return 0;
 557 }