SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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         unsigned unit;
  55 };
  56
  57 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
  58 {
  59         list_del_init(&ldu->active);
  60         vmw_display_unit_cleanup(&ldu->base);
  61         kfree(ldu);
  62 }
  63
  64
  65 /*
  66  * Legacy Display Unit CRTC functions
  67  */
  68
  69 static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
  70 {
  71 }
  72
  73 static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
  74 {
  75 }
  76
  77 static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
  78                                    u16 *r, u16 *g, u16 *b,
  79                                    uint32_t size)
  80 {
  81 }
  82
  83 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
  84 {
  85         vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
  86 }
  87
  88 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
  89 {
  90         struct vmw_legacy_display *lds = dev_priv->ldu_priv;
  91         struct vmw_legacy_display_unit *entry;
  92         struct drm_framebuffer *fb = NULL;
  93         struct drm_crtc *crtc = NULL;
  94         int i = 0;
  95
  96         /* If there is no display topology the host just assumes
  97          * that the guest will set the same layout as the host.
  98          */
  99         if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
 100                 int w = 0, h = 0;
 101                 list_for_each_entry(entry, &lds->active, active) {
 102                         crtc = &entry->base.crtc;
 103                         w = max(w, crtc->x + crtc->mode.hdisplay);
 104                         h = max(h, crtc->y + crtc->mode.vdisplay);
 105                         i++;
 106                 }
 107
 108                 if (crtc == NULL)
 109                         return 0;
 110                 fb = entry->base.crtc.fb;
 111
 112                 vmw_write(dev_priv, SVGA_REG_ENABLE, 0);
 113                 vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
 114                                    fb->bits_per_pixel, fb->depth);
 115                 vmw_write(dev_priv, SVGA_REG_ENABLE, 1);
 116
 117                 return 0;
 118         }
 119
 120         vmw_write(dev_priv, SVGA_REG_ENABLE, 0);
 121
 122         for (i = 0; i < lds->last_num_active; i++) {
 123                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
 124                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
 125                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, 0);
 126                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, 0);
 127                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, 0);
 128                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, 0);
 129                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
 130         }
 131
 132         if (!list_empty(&lds->active)) {
 133                 entry = list_entry(lds->active.next, typeof(*entry), active);
 134                 fb = entry->base.crtc.fb;
 135
 136                 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
 137                                    fb->bits_per_pixel, fb->depth);
 138         }
 139
 140         i = 0;
 141         list_for_each_entry(entry, &lds->active, active) {
 142                 crtc = &entry->base.crtc;
 143
 144                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
 145                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
 146                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
 147                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
 148                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
 149                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
 150                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
 151
 152                 i++;
 153         }
 154
 155         /* Make sure we always show something. */
 156         vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, i ? i : 1);
 157         vmw_write(dev_priv, SVGA_REG_ENABLE, 1);
 158
 159         BUG_ON(i != lds->num_active);
 160
 161         lds->last_num_active = lds->num_active;
 162
 163         return 0;
 164 }
 165
 166 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
 167                               struct vmw_legacy_display_unit *ldu)
 168 {
 169         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 170         if (list_empty(&ldu->active))
 171                 return 0;
 172
 173         /* Must init otherwise list_empty(&ldu->active) will not work. */
 174         list_del_init(&ldu->active);
 175         if (--(ld->num_active) == 0) {
 176                 BUG_ON(!ld->fb);
 177                 if (ld->fb->unpin)
 178                         ld->fb->unpin(ld->fb);
 179                 ld->fb = NULL;
 180         }
 181
 182         return 0;
 183 }
 184
 185 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
 186                               struct vmw_legacy_display_unit *ldu,
 187                               struct vmw_framebuffer *vfb)
 188 {
 189         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 190         struct vmw_legacy_display_unit *entry;
 191         struct list_head *at;
 192
 193         BUG_ON(!ld->num_active && ld->fb);
 194         if (vfb != ld->fb) {
 195                 if (ld->fb && ld->fb->unpin)
 196                         ld->fb->unpin(ld->fb);
 197                 if (vfb->pin)
 198                         vfb->pin(vfb);
 199                 ld->fb = vfb;
 200         }
 201
 202         if (!list_empty(&ldu->active))
 203                 return 0;
 204
 205         at = &ld->active;
 206         list_for_each_entry(entry, &ld->active, active) {
 207                 if (entry->unit > ldu->unit)
 208                         break;
 209
 210                 at = &entry->active;
 211         }
 212
 213         list_add(&ldu->active, at);
 214
 215         ld->num_active++;
 216
 217         return 0;
 218 }
 219
 220 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
 221 {
 222         struct vmw_private *dev_priv;
 223         struct vmw_legacy_display_unit *ldu;
 224         struct drm_connector *connector;
 225         struct drm_display_mode *mode;
 226         struct drm_encoder *encoder;
 227         struct vmw_framebuffer *vfb;
 228         struct drm_framebuffer *fb;
 229         struct drm_crtc *crtc;
 230
 231         if (!set)
 232                 return -EINVAL;
 233
 234         if (!set->crtc)
 235                 return -EINVAL;
 236
 237         /* get the ldu */
 238         crtc = set->crtc;
 239         ldu = vmw_crtc_to_ldu(crtc);
 240         vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
 241         dev_priv = vmw_priv(crtc->dev);
 242
 243         if (set->num_connectors > 1) {
 244                 DRM_ERROR("to many connectors\n");
 245                 return -EINVAL;
 246         }
 247
 248         if (set->num_connectors == 1 &&
 249             set->connectors[0] != &ldu->base.connector) {
 250                 DRM_ERROR("connector doesn't match %p %p\n",
 251                         set->connectors[0], &ldu->base.connector);
 252                 return -EINVAL;
 253         }
 254
 255         /* ldu only supports one fb active at the time */
 256         if (dev_priv->ldu_priv->fb && vfb &&
 257             !(dev_priv->ldu_priv->num_active == 1 &&
 258               !list_empty(&ldu->active)) &&
 259             dev_priv->ldu_priv->fb != vfb) {
 260                 DRM_ERROR("Multiple framebuffers not supported\n");
 261                 return -EINVAL;
 262         }
 263
 264         /* since they always map one to one these are safe */
 265         connector = &ldu->base.connector;
 266         encoder = &ldu->base.encoder;
 267
 268         /* should we turn the crtc off? */
 269         if (set->num_connectors == 0 || !set->mode || !set->fb) {
 270
 271                 connector->encoder = NULL;
 272                 encoder->crtc = NULL;
 273                 crtc->fb = NULL;
 274
 275                 vmw_ldu_del_active(dev_priv, ldu);
 276
 277                 vmw_ldu_commit_list(dev_priv);
 278
 279                 return 0;
 280         }
 281
 282
 283         /* we now know we want to set a mode */
 284         mode = set->mode;
 285         fb = set->fb;
 286
 287         if (set->x + mode->hdisplay > fb->width ||
 288             set->y + mode->vdisplay > fb->height) {
 289                 DRM_ERROR("set outside of framebuffer\n");
 290                 return -EINVAL;
 291         }
 292
 293         vmw_fb_off(dev_priv);
 294
 295         crtc->fb = fb;
 296         encoder->crtc = crtc;
 297         connector->encoder = encoder;
 298         crtc->x = set->x;
 299         crtc->y = set->y;
 300         crtc->mode = *mode;
 301
 302         vmw_ldu_add_active(dev_priv, ldu, vfb);
 303
 304         vmw_ldu_commit_list(dev_priv);
 305
 306         return 0;
 307 }
 308
 309 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
 310         .save = vmw_ldu_crtc_save,
 311         .restore = vmw_ldu_crtc_restore,
 312         .cursor_set = vmw_du_crtc_cursor_set,
 313         .cursor_move = vmw_du_crtc_cursor_move,
 314         .gamma_set = vmw_ldu_crtc_gamma_set,
 315         .destroy = vmw_ldu_crtc_destroy,
 316         .set_config = vmw_ldu_crtc_set_config,
 317 };
 318
 319 /*
 320  * Legacy Display Unit encoder functions
 321  */
 322
 323 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
 324 {
 325         vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
 326 }
 327
 328 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
 329         .destroy = vmw_ldu_encoder_destroy,
 330 };
 331
 332 /*
 333  * Legacy Display Unit connector functions
 334  */
 335
 336 static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
 337 {
 338 }
 339
 340 static void vmw_ldu_connector_save(struct drm_connector *connector)
 341 {
 342 }
 343
 344 static void vmw_ldu_connector_restore(struct drm_connector *connector)
 345 {
 346 }
 347
 348 static enum drm_connector_status
 349         vmw_ldu_connector_detect(struct drm_connector *connector)
 350 {
 351         /* XXX vmwctrl should control connection status */
 352         if (vmw_connector_to_ldu(connector)->base.unit == 0)
 353                 return connector_status_connected;
 354         return connector_status_disconnected;
 355 }
 356
 357 static struct drm_display_mode vmw_ldu_connector_builtin[] = {
 358         /* 640x480@60Hz */
 359         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
 360                    752, 800, 0, 480, 489, 492, 525, 0,
 361                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 362         /* 800x600@60Hz */
 363         { DRM_MODE("800x600",
 364                    DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 365                    40000, 800, 840, 968, 1056, 0, 600, 601, 605, 628,
 366                    0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 367         /* 1024x768@60Hz */
 368         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
 369                    1184, 1344, 0, 768, 771, 777, 806, 0,
 370                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 371         /* 1152x864@75Hz */
 372         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
 373                    1344, 1600, 0, 864, 865, 868, 900, 0,
 374                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 375         /* 1280x768@60Hz */
 376         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
 377                    1472, 1664, 0, 768, 771, 778, 798, 0,
 378                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 379         /* 1280x800@60Hz */
 380         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
 381                    1480, 1680, 0, 800, 803, 809, 831, 0,
 382                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
 383         /* 1280x960@60Hz */
 384         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
 385                    1488, 1800, 0, 960, 961, 964, 1000, 0,
 386                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 387         /* 1280x1024@60Hz */
 388         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
 389                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
 390                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 391         /* 1360x768@60Hz */
 392         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
 393                    1536, 1792, 0, 768, 771, 777, 795, 0,
 394                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 395         /* 1440x1050@60Hz */
 396         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
 397                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
 398                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 399         /* 1440x900@60Hz */
 400         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
 401                    1672, 1904, 0, 900, 903, 909, 934, 0,
 402                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 403         /* 1600x1200@60Hz */
 404         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
 405                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
 406                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 407         /* 1680x1050@60Hz */
 408         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
 409                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
 410                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 411         /* 1792x1344@60Hz */
 412         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
 413                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
 414                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 415         /* 1853x1392@60Hz */
 416         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
 417                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
 418                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 419         /* 1920x1200@60Hz */
 420         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
 421                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
 422                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 423         /* 1920x1440@60Hz */
 424         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
 425                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
 426                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 427         /* 2560x1600@60Hz */
 428         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
 429                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
 430                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 431         /* Terminate */
 432         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
 433 };
 434
 435 static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
 436                                         uint32_t max_width, uint32_t max_height)
 437 {
 438         struct drm_device *dev = connector->dev;
 439         struct drm_display_mode *mode = NULL;
 440         int i;
 441
 442         for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
 443                 if (vmw_ldu_connector_builtin[i].hdisplay > max_width ||
 444                     vmw_ldu_connector_builtin[i].vdisplay > max_height)
 445                         continue;
 446
 447                 mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
 448                 if (!mode)
 449                         return 0;
 450                 mode->vrefresh = drm_mode_vrefresh(mode);
 451
 452                 drm_mode_probed_add(connector, mode);
 453         }
 454
 455         drm_mode_connector_list_update(connector);
 456
 457         return 1;
 458 }
 459
 460 static int vmw_ldu_connector_set_property(struct drm_connector *connector,
 461                                           struct drm_property *property,
 462                                           uint64_t val)
 463 {
 464         return 0;
 465 }
 466
 467 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
 468 {
 469         vmw_ldu_destroy(vmw_connector_to_ldu(connector));
 470 }
 471
 472 static struct drm_connector_funcs vmw_legacy_connector_funcs = {
 473         .dpms = vmw_ldu_connector_dpms,
 474         .save = vmw_ldu_connector_save,
 475         .restore = vmw_ldu_connector_restore,
 476         .detect = vmw_ldu_connector_detect,
 477         .fill_modes = vmw_ldu_connector_fill_modes,
 478         .set_property = vmw_ldu_connector_set_property,
 479         .destroy = vmw_ldu_connector_destroy,
 480 };
 481
 482 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
 483 {
 484         struct vmw_legacy_display_unit *ldu;
 485         struct drm_device *dev = dev_priv->dev;
 486         struct drm_connector *connector;
 487         struct drm_encoder *encoder;
 488         struct drm_crtc *crtc;
 489
 490         ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
 491         if (!ldu)
 492                 return -ENOMEM;
 493
 494         ldu->unit = unit;
 495         crtc = &ldu->base.crtc;
 496         encoder = &ldu->base.encoder;
 497         connector = &ldu->base.connector;
 498
 499         INIT_LIST_HEAD(&ldu->active);
 500
 501         drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
 502                            DRM_MODE_CONNECTOR_LVDS);
 503         connector->status = vmw_ldu_connector_detect(connector);
 504
 505         drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
 506                          DRM_MODE_ENCODER_LVDS);
 507         drm_mode_connector_attach_encoder(connector, encoder);
 508         encoder->possible_crtcs = (1 << unit);
 509         encoder->possible_clones = 0;
 510
 511         drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
 512
 513         drm_connector_attach_property(connector,
 514                                       dev->mode_config.dirty_info_property,
 515                                       1);
 516
 517         return 0;
 518 }
 519
 520 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
 521 {
 522         if (dev_priv->ldu_priv) {
 523                 DRM_INFO("ldu system already on\n");
 524                 return -EINVAL;
 525         }
 526
 527         dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));
 528
 529         if (!dev_priv->ldu_priv)
 530                 return -ENOMEM;
 531
 532         INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
 533         dev_priv->ldu_priv->num_active = 0;
 534         dev_priv->ldu_priv->last_num_active = 0;
 535         dev_priv->ldu_priv->fb = NULL;
 536
 537         drm_mode_create_dirty_info_property(dev_priv->dev);
 538
 539         vmw_ldu_init(dev_priv, 0);
 540         /* for old hardware without multimon only enable one display */
 541         if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
 542                 vmw_ldu_init(dev_priv, 1);
 543                 vmw_ldu_init(dev_priv, 2);
 544                 vmw_ldu_init(dev_priv, 3);
 545                 vmw_ldu_init(dev_priv, 4);
 546                 vmw_ldu_init(dev_priv, 5);
 547                 vmw_ldu_init(dev_priv, 6);
 548                 vmw_ldu_init(dev_priv, 7);
 549         }
 550
 551         return 0;
 552 }
 553
 554 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
 555 {
 556         if (!dev_priv->ldu_priv)
 557                 return -ENOSYS;
 558
 559         BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
 560
 561         kfree(dev_priv->ldu_priv);
 562
 563         return 0;
 564 }