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         unsigned pref_width;
  53         unsigned pref_height;
  54         bool pref_active;
  55         struct drm_display_mode *pref_mode;
  56
  57         struct list_head active;
  58 };
  59
  60 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
  61 {
  62         list_del_init(&ldu->active);
  63         vmw_display_unit_cleanup(&ldu->base);
  64         kfree(ldu);
  65 }
  66
  67
  68 /*
  69  * Legacy Display Unit CRTC functions
  70  */
  71
  72 static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
  73 {
  74 }
  75
  76 static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
  77 {
  78 }
  79
  80 static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
  81                                    u16 *r, u16 *g, u16 *b,
  82                                    uint32_t size)
  83 {
  84 }
  85
  86 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
  87 {
  88         vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
  89 }
  90
  91 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
  92 {
  93         struct vmw_legacy_display *lds = dev_priv->ldu_priv;
  94         struct vmw_legacy_display_unit *entry;
  95         struct drm_framebuffer *fb = NULL;
  96         struct drm_crtc *crtc = NULL;
  97         int i = 0;
  98
  99         /* If there is no display topology the host just assumes
 100          * that the guest will set the same layout as the host.
 101          */
 102         if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
 103                 int w = 0, h = 0;
 104                 list_for_each_entry(entry, &lds->active, active) {
 105                         crtc = &entry->base.crtc;
 106                         w = max(w, crtc->x + crtc->mode.hdisplay);
 107                         h = max(h, crtc->y + crtc->mode.vdisplay);
 108                         i++;
 109                 }
 110
 111                 if (crtc == NULL)
 112                         return 0;
 113                 fb = entry->base.crtc.fb;
 114
 115                 vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
 116                                    fb->bits_per_pixel, fb->depth);
 117
 118                 return 0;
 119         }
 120
 121         if (!list_empty(&lds->active)) {
 122                 entry = list_entry(lds->active.next, typeof(*entry), active);
 123                 fb = entry->base.crtc.fb;
 124
 125                 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
 126                                    fb->bits_per_pixel, fb->depth);
 127         }
 128
 129         /* Make sure we always show something. */
 130         vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
 131                   lds->num_active ? lds->num_active : 1);
 132
 133         i = 0;
 134         list_for_each_entry(entry, &lds->active, active) {
 135                 crtc = &entry->base.crtc;
 136
 137                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
 138                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
 139                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
 140                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
 141                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
 142                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
 143                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
 144
 145                 i++;
 146         }
 147
 148         BUG_ON(i != lds->num_active);
 149
 150         lds->last_num_active = lds->num_active;
 151
 152         return 0;
 153 }
 154
 155 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
 156                               struct vmw_legacy_display_unit *ldu)
 157 {
 158         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 159         if (list_empty(&ldu->active))
 160                 return 0;
 161
 162         /* Must init otherwise list_empty(&ldu->active) will not work. */
 163         list_del_init(&ldu->active);
 164         if (--(ld->num_active) == 0) {
 165                 BUG_ON(!ld->fb);
 166                 if (ld->fb->unpin)
 167                         ld->fb->unpin(ld->fb);
 168                 ld->fb = NULL;
 169         }
 170
 171         return 0;
 172 }
 173
 174 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
 175                               struct vmw_legacy_display_unit *ldu,
 176                               struct vmw_framebuffer *vfb)
 177 {
 178         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 179         struct vmw_legacy_display_unit *entry;
 180         struct list_head *at;
 181
 182         BUG_ON(!ld->num_active && ld->fb);
 183         if (vfb != ld->fb) {
 184                 if (ld->fb && ld->fb->unpin)
 185                         ld->fb->unpin(ld->fb);
 186                 if (vfb->pin)
 187                         vfb->pin(vfb);
 188                 ld->fb = vfb;
 189         }
 190
 191         if (!list_empty(&ldu->active))
 192                 return 0;
 193
 194         at = &ld->active;
 195         list_for_each_entry(entry, &ld->active, active) {
 196                 if (entry->base.unit > ldu->base.unit)
 197                         break;
 198
 199                 at = &entry->active;
 200         }
 201
 202         list_add(&ldu->active, at);
 203
 204         ld->num_active++;
 205
 206         return 0;
 207 }
 208
 209 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
 210 {
 211         struct vmw_private *dev_priv;
 212         struct vmw_legacy_display_unit *ldu;
 213         struct drm_connector *connector;
 214         struct drm_display_mode *mode;
 215         struct drm_encoder *encoder;
 216         struct vmw_framebuffer *vfb;
 217         struct drm_framebuffer *fb;
 218         struct drm_crtc *crtc;
 219
 220         if (!set)
 221                 return -EINVAL;
 222
 223         if (!set->crtc)
 224                 return -EINVAL;
 225
 226         /* get the ldu */
 227         crtc = set->crtc;
 228         ldu = vmw_crtc_to_ldu(crtc);
 229         vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
 230         dev_priv = vmw_priv(crtc->dev);
 231
 232         if (set->num_connectors > 1) {
 233                 DRM_ERROR("to many connectors\n");
 234                 return -EINVAL;
 235         }
 236
 237         if (set->num_connectors == 1 &&
 238             set->connectors[0] != &ldu->base.connector) {
 239                 DRM_ERROR("connector doesn't match %p %p\n",
 240                         set->connectors[0], &ldu->base.connector);
 241                 return -EINVAL;
 242         }
 243
 244         /* ldu only supports one fb active at the time */
 245         if (dev_priv->ldu_priv->fb && vfb &&
 246             !(dev_priv->ldu_priv->num_active == 1 &&
 247               !list_empty(&ldu->active)) &&
 248             dev_priv->ldu_priv->fb != vfb) {
 249                 DRM_ERROR("Multiple framebuffers not supported\n");
 250                 return -EINVAL;
 251         }
 252
 253         /* since they always map one to one these are safe */
 254         connector = &ldu->base.connector;
 255         encoder = &ldu->base.encoder;
 256
 257         /* should we turn the crtc off? */
 258         if (set->num_connectors == 0 || !set->mode || !set->fb) {
 259
 260                 connector->encoder = NULL;
 261                 encoder->crtc = NULL;
 262                 crtc->fb = NULL;
 263
 264                 vmw_ldu_del_active(dev_priv, ldu);
 265
 266                 vmw_ldu_commit_list(dev_priv);
 267
 268                 return 0;
 269         }
 270
 271
 272         /* we now know we want to set a mode */
 273         mode = set->mode;
 274         fb = set->fb;
 275
 276         if (set->x + mode->hdisplay > fb->width ||
 277             set->y + mode->vdisplay > fb->height) {
 278                 DRM_ERROR("set outside of framebuffer\n");
 279                 return -EINVAL;
 280         }
 281
 282         vmw_fb_off(dev_priv);
 283
 284         crtc->fb = fb;
 285         encoder->crtc = crtc;
 286         connector->encoder = encoder;
 287         crtc->x = set->x;
 288         crtc->y = set->y;
 289         crtc->mode = *mode;
 290
 291         vmw_ldu_add_active(dev_priv, ldu, vfb);
 292
 293         vmw_ldu_commit_list(dev_priv);
 294
 295         return 0;
 296 }
 297
 298 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
 299         .save = vmw_ldu_crtc_save,
 300         .restore = vmw_ldu_crtc_restore,
 301         .cursor_set = vmw_du_crtc_cursor_set,
 302         .cursor_move = vmw_du_crtc_cursor_move,
 303         .gamma_set = vmw_ldu_crtc_gamma_set,
 304         .destroy = vmw_ldu_crtc_destroy,
 305         .set_config = vmw_ldu_crtc_set_config,
 306 };
 307
 308 /*
 309  * Legacy Display Unit encoder functions
 310  */
 311
 312 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
 313 {
 314         vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
 315 }
 316
 317 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
 318         .destroy = vmw_ldu_encoder_destroy,
 319 };
 320
 321 /*
 322  * Legacy Display Unit connector functions
 323  */
 324
 325 static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
 326 {
 327 }
 328
 329 static void vmw_ldu_connector_save(struct drm_connector *connector)
 330 {
 331 }
 332
 333 static void vmw_ldu_connector_restore(struct drm_connector *connector)
 334 {
 335 }
 336
 337 static enum drm_connector_status
 338         vmw_ldu_connector_detect(struct drm_connector *connector)
 339 {
 340         if (vmw_connector_to_ldu(connector)->pref_active)
 341                 return connector_status_connected;
 342         return connector_status_disconnected;
 343 }
 344
 345 static struct drm_display_mode vmw_ldu_connector_builtin[] = {
 346         /* 640x480@60Hz */
 347         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
 348                    752, 800, 0, 480, 489, 492, 525, 0,
 349                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 350         /* 800x600@60Hz */
 351         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
 352                    968, 1056, 0, 600, 601, 605, 628, 0,
 353                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 354         /* 1024x768@60Hz */
 355         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
 356                    1184, 1344, 0, 768, 771, 777, 806, 0,
 357                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 358         /* 1152x864@75Hz */
 359         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
 360                    1344, 1600, 0, 864, 865, 868, 900, 0,
 361                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 362         /* 1280x768@60Hz */
 363         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
 364                    1472, 1664, 0, 768, 771, 778, 798, 0,
 365                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 366         /* 1280x800@60Hz */
 367         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
 368                    1480, 1680, 0, 800, 803, 809, 831, 0,
 369                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
 370         /* 1280x960@60Hz */
 371         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
 372                    1488, 1800, 0, 960, 961, 964, 1000, 0,
 373                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 374         /* 1280x1024@60Hz */
 375         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
 376                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
 377                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 378         /* 1360x768@60Hz */
 379         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
 380                    1536, 1792, 0, 768, 771, 777, 795, 0,
 381                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 382         /* 1440x1050@60Hz */
 383         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
 384                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
 385                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 386         /* 1440x900@60Hz */
 387         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
 388                    1672, 1904, 0, 900, 903, 909, 934, 0,
 389                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 390         /* 1600x1200@60Hz */
 391         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
 392                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
 393                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 394         /* 1680x1050@60Hz */
 395         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
 396                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
 397                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 398         /* 1792x1344@60Hz */
 399         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
 400                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
 401                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 402         /* 1853x1392@60Hz */
 403         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
 404                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
 405                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 406         /* 1920x1200@60Hz */
 407         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
 408                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
 409                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 410         /* 1920x1440@60Hz */
 411         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
 412                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
 413                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 414         /* 2560x1600@60Hz */
 415         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
 416                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
 417                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 418         /* Terminate */
 419         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
 420 };
 421
 422 static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
 423                                         uint32_t max_width, uint32_t max_height)
 424 {
 425         struct vmw_legacy_display_unit *ldu = vmw_connector_to_ldu(connector);
 426         struct drm_device *dev = connector->dev;
 427         struct drm_display_mode *mode = NULL;
 428         struct drm_display_mode prefmode = { DRM_MODE("preferred",
 429                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 430                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 431                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
 432         };
 433         int i;
 434
 435         /* Add preferred mode */
 436         {
 437                 mode = drm_mode_duplicate(dev, &prefmode);
 438                 if (!mode)
 439                         return 0;
 440                 mode->hdisplay = ldu->pref_width;
 441                 mode->vdisplay = ldu->pref_height;
 442                 mode->vrefresh = drm_mode_vrefresh(mode);
 443                 drm_mode_probed_add(connector, mode);
 444
 445                 if (ldu->pref_mode) {
 446                         list_del_init(&ldu->pref_mode->head);
 447                         drm_mode_destroy(dev, ldu->pref_mode);
 448                 }
 449
 450                 ldu->pref_mode = mode;
 451         }
 452
 453         for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
 454                 if (vmw_ldu_connector_builtin[i].hdisplay > max_width ||
 455                     vmw_ldu_connector_builtin[i].vdisplay > max_height)
 456                         continue;
 457
 458                 mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
 459                 if (!mode)
 460                         return 0;
 461                 mode->vrefresh = drm_mode_vrefresh(mode);
 462
 463                 drm_mode_probed_add(connector, mode);
 464         }
 465
 466         drm_mode_connector_list_update(connector);
 467
 468         return 1;
 469 }
 470
 471 static int vmw_ldu_connector_set_property(struct drm_connector *connector,
 472                                           struct drm_property *property,
 473                                           uint64_t val)
 474 {
 475         return 0;
 476 }
 477
 478 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
 479 {
 480         vmw_ldu_destroy(vmw_connector_to_ldu(connector));
 481 }
 482
 483 static struct drm_connector_funcs vmw_legacy_connector_funcs = {
 484         .dpms = vmw_ldu_connector_dpms,
 485         .save = vmw_ldu_connector_save,
 486         .restore = vmw_ldu_connector_restore,
 487         .detect = vmw_ldu_connector_detect,
 488         .fill_modes = vmw_ldu_connector_fill_modes,
 489         .set_property = vmw_ldu_connector_set_property,
 490         .destroy = vmw_ldu_connector_destroy,
 491 };
 492
 493 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
 494 {
 495         struct vmw_legacy_display_unit *ldu;
 496         struct drm_device *dev = dev_priv->dev;
 497         struct drm_connector *connector;
 498         struct drm_encoder *encoder;
 499         struct drm_crtc *crtc;
 500
 501         ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
 502         if (!ldu)
 503                 return -ENOMEM;
 504
 505         ldu->base.unit = unit;
 506         crtc = &ldu->base.crtc;
 507         encoder = &ldu->base.encoder;
 508         connector = &ldu->base.connector;
 509
 510         INIT_LIST_HEAD(&ldu->active);
 511
 512         ldu->pref_active = (unit == 0);
 513         ldu->pref_width = 800;
 514         ldu->pref_height = 600;
 515         ldu->pref_mode = NULL;
 516
 517         drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
 518                            DRM_MODE_CONNECTOR_LVDS);
 519         connector->status = vmw_ldu_connector_detect(connector);
 520
 521         drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
 522                          DRM_MODE_ENCODER_LVDS);
 523         drm_mode_connector_attach_encoder(connector, encoder);
 524         encoder->possible_crtcs = (1 << unit);
 525         encoder->possible_clones = 0;
 526
 527         drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
 528
 529         drm_connector_attach_property(connector,
 530                                       dev->mode_config.dirty_info_property,
 531                                       1);
 532
 533         return 0;
 534 }
 535
 536 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
 537 {
 538         if (dev_priv->ldu_priv) {
 539                 DRM_INFO("ldu system already on\n");
 540                 return -EINVAL;
 541         }
 542
 543         dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));
 544
 545         if (!dev_priv->ldu_priv)
 546                 return -ENOMEM;
 547
 548         INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
 549         dev_priv->ldu_priv->num_active = 0;
 550         dev_priv->ldu_priv->last_num_active = 0;
 551         dev_priv->ldu_priv->fb = NULL;
 552
 553         drm_mode_create_dirty_info_property(dev_priv->dev);
 554
 555         vmw_ldu_init(dev_priv, 0);
 556         /* for old hardware without multimon only enable one display */
 557         if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
 558                 vmw_ldu_init(dev_priv, 1);
 559                 vmw_ldu_init(dev_priv, 2);
 560                 vmw_ldu_init(dev_priv, 3);
 561                 vmw_ldu_init(dev_priv, 4);
 562                 vmw_ldu_init(dev_priv, 5);
 563                 vmw_ldu_init(dev_priv, 6);
 564                 vmw_ldu_init(dev_priv, 7);
 565         }
 566
 567         return 0;
 568 }
 569
 570 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
 571 {
 572         if (!dev_priv->ldu_priv)
 573                 return -ENOSYS;
 574
 575         BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
 576
 577         kfree(dev_priv->ldu_priv);
 578
 579         return 0;
 580 }
 581
 582 int vmw_kms_ldu_update_layout(struct vmw_private *dev_priv, unsigned num,
 583                               struct drm_vmw_rect *rects)
 584 {
 585         struct drm_device *dev = dev_priv->dev;
 586         struct vmw_legacy_display_unit *ldu;
 587         struct drm_connector *con;
 588         int i;
 589
 590         mutex_lock(&dev->mode_config.mutex);
 591
 592 #if 0
 593         DRM_INFO("%s: new layout ", __func__);
 594         for (i = 0; i < (int)num; i++)
 595                 DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
 596                          rects[i].w, rects[i].h);
 597         DRM_INFO("\n");
 598 #else
 599         (void)i;
 600 #endif
 601
 602         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
 603                 ldu = vmw_connector_to_ldu(con);
 604                 if (num > ldu->base.unit) {
 605                         ldu->pref_width = rects[ldu->base.unit].w;
 606                         ldu->pref_height = rects[ldu->base.unit].h;
 607                         ldu->pref_active = true;
 608                 } else {
 609                         ldu->pref_width = 800;
 610                         ldu->pref_height = 600;
 611                         ldu->pref_active = false;
 612                 }
 613                 con->status = vmw_ldu_connector_detect(con);
 614         }
 615
 616         mutex_unlock(&dev->mode_config.mutex);
 617
 618         return 0;
 619 }