drivers/gpu/drm/amd/amdgpu/dce_virtual.c

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23 #include "drmP.h"
  24 #include "amdgpu.h"
  25 #include "amdgpu_pm.h"
  26 #include "amdgpu_i2c.h"
  27 #include "atom.h"
  28 #include "amdgpu_pll.h"
  29 #include "amdgpu_connectors.h"
  30 #ifdef CONFIG_DRM_AMDGPU_SI
  31 #include "dce_v6_0.h"
  32 #endif
  33 #ifdef CONFIG_DRM_AMDGPU_CIK
  34 #include "dce_v8_0.h"
  35 #endif
  36 #include "dce_v10_0.h"
  37 #include "dce_v11_0.h"
  38 #include "dce_virtual.h"
  39
  40 #define DCE_VIRTUAL_VBLANK_PERIOD 16666666
  41
  42
  43 static void dce_virtual_set_display_funcs(struct amdgpu_device *adev);
  44 static void dce_virtual_set_irq_funcs(struct amdgpu_device *adev);
  45 static int dce_virtual_connector_encoder_init(struct amdgpu_device *adev,
  46                                               int index);
  47
  48 /**
  49  * dce_virtual_vblank_wait - vblank wait asic callback.
  50  *
  51  * @adev: amdgpu_device pointer
  52  * @crtc: crtc to wait for vblank on
  53  *
  54  * Wait for vblank on the requested crtc (evergreen+).
  55  */
  56 static void dce_virtual_vblank_wait(struct amdgpu_device *adev, int crtc)
  57 {
  58         return;
  59 }
  60
  61 static u32 dce_virtual_vblank_get_counter(struct amdgpu_device *adev, int crtc)
  62 {
  63         return 0;
  64 }
  65
  66 static void dce_virtual_page_flip(struct amdgpu_device *adev,
  67                               int crtc_id, u64 crtc_base, bool async)
  68 {
  69         return;
  70 }
  71
  72 static int dce_virtual_crtc_get_scanoutpos(struct amdgpu_device *adev, int crtc,
  73                                         u32 *vbl, u32 *position)
  74 {
  75         *vbl = 0;
  76         *position = 0;
  77
  78         return -EINVAL;
  79 }
  80
  81 static bool dce_virtual_hpd_sense(struct amdgpu_device *adev,
  82                                enum amdgpu_hpd_id hpd)
  83 {
  84         return true;
  85 }
  86
  87 static void dce_virtual_hpd_set_polarity(struct amdgpu_device *adev,
  88                                       enum amdgpu_hpd_id hpd)
  89 {
  90         return;
  91 }
  92
  93 static u32 dce_virtual_hpd_get_gpio_reg(struct amdgpu_device *adev)
  94 {
  95         return 0;
  96 }
  97
  98 static void dce_virtual_stop_mc_access(struct amdgpu_device *adev,
  99                               struct amdgpu_mode_mc_save *save)
 100 {
 101         switch (adev->asic_type) {
 102 #ifdef CONFIG_DRM_AMDGPU_SI
 103         case CHIP_TAHITI:
 104         case CHIP_PITCAIRN:
 105         case CHIP_VERDE:
 106         case CHIP_OLAND:
 107                 dce_v6_0_disable_dce(adev);
 108                 break;
 109 #endif
 110 #ifdef CONFIG_DRM_AMDGPU_CIK
 111         case CHIP_BONAIRE:
 112         case CHIP_HAWAII:
 113         case CHIP_KAVERI:
 114         case CHIP_KABINI:
 115         case CHIP_MULLINS:
 116                 dce_v8_0_disable_dce(adev);
 117                 break;
 118 #endif
 119         case CHIP_FIJI:
 120         case CHIP_TONGA:
 121                 dce_v10_0_disable_dce(adev);
 122                 break;
 123         case CHIP_CARRIZO:
 124         case CHIP_STONEY:
 125         case CHIP_POLARIS11:
 126         case CHIP_POLARIS10:
 127                 dce_v11_0_disable_dce(adev);
 128                 break;
 129         case CHIP_TOPAZ:
 130 #ifdef CONFIG_DRM_AMDGPU_SI
 131         case CHIP_HAINAN:
 132 #endif
 133                 /* no DCE */
 134                 return;
 135         default:
 136                 DRM_ERROR("Virtual display unsupported ASIC type: 0x%X\n", adev->asic_type);
 137         }
 138
 139         return;
 140 }
 141 static void dce_virtual_resume_mc_access(struct amdgpu_device *adev,
 142                                 struct amdgpu_mode_mc_save *save)
 143 {
 144         return;
 145 }
 146
 147 static void dce_virtual_set_vga_render_state(struct amdgpu_device *adev,
 148                                     bool render)
 149 {
 150         return;
 151 }
 152
 153 /**
 154  * dce_virtual_bandwidth_update - program display watermarks
 155  *
 156  * @adev: amdgpu_device pointer
 157  *
 158  * Calculate and program the display watermarks and line
 159  * buffer allocation (CIK).
 160  */
 161 static void dce_virtual_bandwidth_update(struct amdgpu_device *adev)
 162 {
 163         return;
 164 }
 165
 166 static int dce_virtual_crtc_gamma_set(struct drm_crtc *crtc, u16 *red,
 167                                       u16 *green, u16 *blue, uint32_t size)
 168 {
 169         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 170         int i;
 171
 172         /* userspace palettes are always correct as is */
 173         for (i = 0; i < size; i++) {
 174                 amdgpu_crtc->lut_r[i] = red[i] >> 6;
 175                 amdgpu_crtc->lut_g[i] = green[i] >> 6;
 176                 amdgpu_crtc->lut_b[i] = blue[i] >> 6;
 177         }
 178
 179         return 0;
 180 }
 181
 182 static void dce_virtual_crtc_destroy(struct drm_crtc *crtc)
 183 {
 184         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 185
 186         drm_crtc_cleanup(crtc);
 187         kfree(amdgpu_crtc);
 188 }
 189
 190 static const struct drm_crtc_funcs dce_virtual_crtc_funcs = {
 191         .cursor_set2 = NULL,
 192         .cursor_move = NULL,
 193         .gamma_set = dce_virtual_crtc_gamma_set,
 194         .set_config = amdgpu_crtc_set_config,
 195         .destroy = dce_virtual_crtc_destroy,
 196         .page_flip_target = amdgpu_crtc_page_flip_target,
 197 };
 198
 199 static void dce_virtual_crtc_dpms(struct drm_crtc *crtc, int mode)
 200 {
 201         struct drm_device *dev = crtc->dev;
 202         struct amdgpu_device *adev = dev->dev_private;
 203         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 204         unsigned type;
 205
 206         switch (mode) {
 207         case DRM_MODE_DPMS_ON:
 208                 amdgpu_crtc->enabled = true;
 209                 /* Make sure VBLANK interrupts are still enabled */
 210                 type = amdgpu_crtc_idx_to_irq_type(adev, amdgpu_crtc->crtc_id);
 211                 amdgpu_irq_update(adev, &adev->crtc_irq, type);
 212                 drm_crtc_vblank_on(crtc);
 213                 break;
 214         case DRM_MODE_DPMS_STANDBY:
 215         case DRM_MODE_DPMS_SUSPEND:
 216         case DRM_MODE_DPMS_OFF:
 217                 drm_crtc_vblank_off(crtc);
 218                 amdgpu_crtc->enabled = false;
 219                 break;
 220         }
 221 }
 222
 223
 224 static void dce_virtual_crtc_prepare(struct drm_crtc *crtc)
 225 {
 226         dce_virtual_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
 227 }
 228
 229 static void dce_virtual_crtc_commit(struct drm_crtc *crtc)
 230 {
 231         dce_virtual_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
 232 }
 233
 234 static void dce_virtual_crtc_disable(struct drm_crtc *crtc)
 235 {
 236         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 237
 238         dce_virtual_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
 239         if (crtc->primary->fb) {
 240                 int r;
 241                 struct amdgpu_framebuffer *amdgpu_fb;
 242                 struct amdgpu_bo *abo;
 243
 244                 amdgpu_fb = to_amdgpu_framebuffer(crtc->primary->fb);
 245                 abo = gem_to_amdgpu_bo(amdgpu_fb->obj);
 246                 r = amdgpu_bo_reserve(abo, false);
 247                 if (unlikely(r))
 248                         DRM_ERROR("failed to reserve abo before unpin\n");
 249                 else {
 250                         amdgpu_bo_unpin(abo);
 251                         amdgpu_bo_unreserve(abo);
 252                 }
 253         }
 254
 255         amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
 256         amdgpu_crtc->encoder = NULL;
 257         amdgpu_crtc->connector = NULL;
 258 }
 259
 260 static int dce_virtual_crtc_mode_set(struct drm_crtc *crtc,
 261                                   struct drm_display_mode *mode,
 262                                   struct drm_display_mode *adjusted_mode,
 263                                   int x, int y, struct drm_framebuffer *old_fb)
 264 {
 265         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 266
 267         /* update the hw version fpr dpm */
 268         amdgpu_crtc->hw_mode = *adjusted_mode;
 269
 270         return 0;
 271 }
 272
 273 static bool dce_virtual_crtc_mode_fixup(struct drm_crtc *crtc,
 274                                      const struct drm_display_mode *mode,
 275                                      struct drm_display_mode *adjusted_mode)
 276 {
 277         return true;
 278 }
 279
 280
 281 static int dce_virtual_crtc_set_base(struct drm_crtc *crtc, int x, int y,
 282                                   struct drm_framebuffer *old_fb)
 283 {
 284         return 0;
 285 }
 286
 287 static void dce_virtual_crtc_load_lut(struct drm_crtc *crtc)
 288 {
 289         return;
 290 }
 291
 292 static int dce_virtual_crtc_set_base_atomic(struct drm_crtc *crtc,
 293                                          struct drm_framebuffer *fb,
 294                                          int x, int y, enum mode_set_atomic state)
 295 {
 296         return 0;
 297 }
 298
 299 static const struct drm_crtc_helper_funcs dce_virtual_crtc_helper_funcs = {
 300         .dpms = dce_virtual_crtc_dpms,
 301         .mode_fixup = dce_virtual_crtc_mode_fixup,
 302         .mode_set = dce_virtual_crtc_mode_set,
 303         .mode_set_base = dce_virtual_crtc_set_base,
 304         .mode_set_base_atomic = dce_virtual_crtc_set_base_atomic,
 305         .prepare = dce_virtual_crtc_prepare,
 306         .commit = dce_virtual_crtc_commit,
 307         .load_lut = dce_virtual_crtc_load_lut,
 308         .disable = dce_virtual_crtc_disable,
 309 };
 310
 311 static int dce_virtual_crtc_init(struct amdgpu_device *adev, int index)
 312 {
 313         struct amdgpu_crtc *amdgpu_crtc;
 314         int i;
 315
 316         amdgpu_crtc = kzalloc(sizeof(struct amdgpu_crtc) +
 317                               (AMDGPUFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
 318         if (amdgpu_crtc == NULL)
 319                 return -ENOMEM;
 320
 321         drm_crtc_init(adev->ddev, &amdgpu_crtc->base, &dce_virtual_crtc_funcs);
 322
 323         drm_mode_crtc_set_gamma_size(&amdgpu_crtc->base, 256);
 324         amdgpu_crtc->crtc_id = index;
 325         adev->mode_info.crtcs[index] = amdgpu_crtc;
 326
 327         for (i = 0; i < 256; i++) {
 328                 amdgpu_crtc->lut_r[i] = i << 2;
 329                 amdgpu_crtc->lut_g[i] = i << 2;
 330                 amdgpu_crtc->lut_b[i] = i << 2;
 331         }
 332
 333         amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
 334         amdgpu_crtc->encoder = NULL;
 335         amdgpu_crtc->connector = NULL;
 336         amdgpu_crtc->vsync_timer_enabled = AMDGPU_IRQ_STATE_DISABLE;
 337         drm_crtc_helper_add(&amdgpu_crtc->base, &dce_virtual_crtc_helper_funcs);
 338
 339         return 0;
 340 }
 341
 342 static int dce_virtual_early_init(void *handle)
 343 {
 344         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 345
 346         dce_virtual_set_display_funcs(adev);
 347         dce_virtual_set_irq_funcs(adev);
 348
 349         adev->mode_info.num_hpd = 1;
 350         adev->mode_info.num_dig = 1;
 351         return 0;
 352 }
 353
 354 static struct drm_encoder *
 355 dce_virtual_encoder(struct drm_connector *connector)
 356 {
 357         int enc_id = connector->encoder_ids[0];
 358         struct drm_encoder *encoder;
 359         int i;
 360
 361         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 362                 if (connector->encoder_ids[i] == 0)
 363                         break;
 364
 365                 encoder = drm_encoder_find(connector->dev, connector->encoder_ids[i]);
 366                 if (!encoder)
 367                         continue;
 368
 369                 if (encoder->encoder_type == DRM_MODE_ENCODER_VIRTUAL)
 370                         return encoder;
 371         }
 372
 373         /* pick the first one */
 374         if (enc_id)
 375                 return drm_encoder_find(connector->dev, enc_id);
 376         return NULL;
 377 }
 378
 379 static int dce_virtual_get_modes(struct drm_connector *connector)
 380 {
 381         struct drm_device *dev = connector->dev;
 382         struct drm_display_mode *mode = NULL;
 383         unsigned i;
 384         static const struct mode_size {
 385                 int w;
 386                 int h;
 387         } common_modes[17] = {
 388                 { 640,  480},
 389                 { 720,  480},
 390                 { 800,  600},
 391                 { 848,  480},
 392                 {1024,  768},
 393                 {1152,  768},
 394                 {1280,  720},
 395                 {1280,  800},
 396                 {1280,  854},
 397                 {1280,  960},
 398                 {1280, 1024},
 399                 {1440,  900},
 400                 {1400, 1050},
 401                 {1680, 1050},
 402                 {1600, 1200},
 403                 {1920, 1080},
 404                 {1920, 1200}
 405         };
 406
 407         for (i = 0; i < 17; i++) {
 408                 mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false, false);
 409                 drm_mode_probed_add(connector, mode);
 410         }
 411
 412         return 0;
 413 }
 414
 415 static int dce_virtual_mode_valid(struct drm_connector *connector,
 416                                   struct drm_display_mode *mode)
 417 {
 418         return MODE_OK;
 419 }
 420
 421 static int
 422 dce_virtual_dpms(struct drm_connector *connector, int mode)
 423 {
 424         return 0;
 425 }
 426
 427 static int
 428 dce_virtual_set_property(struct drm_connector *connector,
 429                          struct drm_property *property,
 430                          uint64_t val)
 431 {
 432         return 0;
 433 }
 434
 435 static void dce_virtual_destroy(struct drm_connector *connector)
 436 {
 437         drm_connector_unregister(connector);
 438         drm_connector_cleanup(connector);
 439         kfree(connector);
 440 }
 441
 442 static void dce_virtual_force(struct drm_connector *connector)
 443 {
 444         return;
 445 }
 446
 447 static const struct drm_connector_helper_funcs dce_virtual_connector_helper_funcs = {
 448         .get_modes = dce_virtual_get_modes,
 449         .mode_valid = dce_virtual_mode_valid,
 450         .best_encoder = dce_virtual_encoder,
 451 };
 452
 453 static const struct drm_connector_funcs dce_virtual_connector_funcs = {
 454         .dpms = dce_virtual_dpms,
 455         .fill_modes = drm_helper_probe_single_connector_modes,
 456         .set_property = dce_virtual_set_property,
 457         .destroy = dce_virtual_destroy,
 458         .force = dce_virtual_force,
 459 };
 460
 461 static int dce_virtual_sw_init(void *handle)
 462 {
 463         int r, i;
 464         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 465
 466         r = amdgpu_irq_add_id(adev, 229, &adev->crtc_irq);
 467         if (r)
 468                 return r;
 469
 470         adev->ddev->max_vblank_count = 0;
 471
 472         adev->ddev->mode_config.funcs = &amdgpu_mode_funcs;
 473
 474         adev->ddev->mode_config.max_width = 16384;
 475         adev->ddev->mode_config.max_height = 16384;
 476
 477         adev->ddev->mode_config.preferred_depth = 24;
 478         adev->ddev->mode_config.prefer_shadow = 1;
 479
 480         adev->ddev->mode_config.fb_base = adev->mc.aper_base;
 481
 482         r = amdgpu_modeset_create_props(adev);
 483         if (r)
 484                 return r;
 485
 486         adev->ddev->mode_config.max_width = 16384;
 487         adev->ddev->mode_config.max_height = 16384;
 488
 489         /* allocate crtcs, encoders, connectors */
 490         for (i = 0; i < adev->mode_info.num_crtc; i++) {
 491                 r = dce_virtual_crtc_init(adev, i);
 492                 if (r)
 493                         return r;
 494                 r = dce_virtual_connector_encoder_init(adev, i);
 495                 if (r)
 496                         return r;
 497         }
 498
 499         drm_kms_helper_poll_init(adev->ddev);
 500
 501         adev->mode_info.mode_config_initialized = true;
 502         return 0;
 503 }
 504
 505 static int dce_virtual_sw_fini(void *handle)
 506 {
 507         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 508
 509         kfree(adev->mode_info.bios_hardcoded_edid);
 510
 511         drm_kms_helper_poll_fini(adev->ddev);
 512
 513         drm_mode_config_cleanup(adev->ddev);
 514         adev->mode_info.mode_config_initialized = false;
 515         return 0;
 516 }
 517
 518 static int dce_virtual_hw_init(void *handle)
 519 {
 520         return 0;
 521 }
 522
 523 static int dce_virtual_hw_fini(void *handle)
 524 {
 525         return 0;
 526 }
 527
 528 static int dce_virtual_suspend(void *handle)
 529 {
 530         return dce_virtual_hw_fini(handle);
 531 }
 532
 533 static int dce_virtual_resume(void *handle)
 534 {
 535         return dce_virtual_hw_init(handle);
 536 }
 537
 538 static bool dce_virtual_is_idle(void *handle)
 539 {
 540         return true;
 541 }
 542
 543 static int dce_virtual_wait_for_idle(void *handle)
 544 {
 545         return 0;
 546 }
 547
 548 static int dce_virtual_soft_reset(void *handle)
 549 {
 550         return 0;
 551 }
 552
 553 static int dce_virtual_set_clockgating_state(void *handle,
 554                                           enum amd_clockgating_state state)
 555 {
 556         return 0;
 557 }
 558
 559 static int dce_virtual_set_powergating_state(void *handle,
 560                                           enum amd_powergating_state state)
 561 {
 562         return 0;
 563 }
 564
 565 static const struct amd_ip_funcs dce_virtual_ip_funcs = {
 566         .name = "dce_virtual",
 567         .early_init = dce_virtual_early_init,
 568         .late_init = NULL,
 569         .sw_init = dce_virtual_sw_init,
 570         .sw_fini = dce_virtual_sw_fini,
 571         .hw_init = dce_virtual_hw_init,
 572         .hw_fini = dce_virtual_hw_fini,
 573         .suspend = dce_virtual_suspend,
 574         .resume = dce_virtual_resume,
 575         .is_idle = dce_virtual_is_idle,
 576         .wait_for_idle = dce_virtual_wait_for_idle,
 577         .soft_reset = dce_virtual_soft_reset,
 578         .set_clockgating_state = dce_virtual_set_clockgating_state,
 579         .set_powergating_state = dce_virtual_set_powergating_state,
 580 };
 581
 582 /* these are handled by the primary encoders */
 583 static void dce_virtual_encoder_prepare(struct drm_encoder *encoder)
 584 {
 585         return;
 586 }
 587
 588 static void dce_virtual_encoder_commit(struct drm_encoder *encoder)
 589 {
 590         return;
 591 }
 592
 593 static void
 594 dce_virtual_encoder_mode_set(struct drm_encoder *encoder,
 595                              struct drm_display_mode *mode,
 596                              struct drm_display_mode *adjusted_mode)
 597 {
 598         return;
 599 }
 600
 601 static void dce_virtual_encoder_disable(struct drm_encoder *encoder)
 602 {
 603         return;
 604 }
 605
 606 static void
 607 dce_virtual_encoder_dpms(struct drm_encoder *encoder, int mode)
 608 {
 609         return;
 610 }
 611
 612 static bool dce_virtual_encoder_mode_fixup(struct drm_encoder *encoder,
 613                                     const struct drm_display_mode *mode,
 614                                     struct drm_display_mode *adjusted_mode)
 615 {
 616         return true;
 617 }
 618
 619 static const struct drm_encoder_helper_funcs dce_virtual_encoder_helper_funcs = {
 620         .dpms = dce_virtual_encoder_dpms,
 621         .mode_fixup = dce_virtual_encoder_mode_fixup,
 622         .prepare = dce_virtual_encoder_prepare,
 623         .mode_set = dce_virtual_encoder_mode_set,
 624         .commit = dce_virtual_encoder_commit,
 625         .disable = dce_virtual_encoder_disable,
 626 };
 627
 628 static void dce_virtual_encoder_destroy(struct drm_encoder *encoder)
 629 {
 630         struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
 631
 632         kfree(amdgpu_encoder->enc_priv);
 633         drm_encoder_cleanup(encoder);
 634         kfree(amdgpu_encoder);
 635 }
 636
 637 static const struct drm_encoder_funcs dce_virtual_encoder_funcs = {
 638         .destroy = dce_virtual_encoder_destroy,
 639 };
 640
 641 static int dce_virtual_connector_encoder_init(struct amdgpu_device *adev,
 642                                               int index)
 643 {
 644         struct drm_encoder *encoder;
 645         struct drm_connector *connector;
 646
 647         /* add a new encoder */
 648         encoder = kzalloc(sizeof(struct drm_encoder), GFP_KERNEL);
 649         if (!encoder)
 650                 return -ENOMEM;
 651         encoder->possible_crtcs = 1 << index;
 652         drm_encoder_init(adev->ddev, encoder, &dce_virtual_encoder_funcs,
 653                          DRM_MODE_ENCODER_VIRTUAL, NULL);
 654         drm_encoder_helper_add(encoder, &dce_virtual_encoder_helper_funcs);
 655
 656         connector = kzalloc(sizeof(struct drm_connector), GFP_KERNEL);
 657         if (!connector) {
 658                 kfree(encoder);
 659                 return -ENOMEM;
 660         }
 661
 662         /* add a new connector */
 663         drm_connector_init(adev->ddev, connector, &dce_virtual_connector_funcs,
 664                            DRM_MODE_CONNECTOR_VIRTUAL);
 665         drm_connector_helper_add(connector, &dce_virtual_connector_helper_funcs);
 666         connector->display_info.subpixel_order = SubPixelHorizontalRGB;
 667         connector->interlace_allowed = false;
 668         connector->doublescan_allowed = false;
 669         drm_connector_register(connector);
 670
 671         /* link them */
 672         drm_mode_connector_attach_encoder(connector, encoder);
 673
 674         return 0;
 675 }
 676
 677 static const struct amdgpu_display_funcs dce_virtual_display_funcs = {
 678         .set_vga_render_state = &dce_virtual_set_vga_render_state,
 679         .bandwidth_update = &dce_virtual_bandwidth_update,
 680         .vblank_get_counter = &dce_virtual_vblank_get_counter,
 681         .vblank_wait = &dce_virtual_vblank_wait,
 682         .backlight_set_level = NULL,
 683         .backlight_get_level = NULL,
 684         .hpd_sense = &dce_virtual_hpd_sense,
 685         .hpd_set_polarity = &dce_virtual_hpd_set_polarity,
 686         .hpd_get_gpio_reg = &dce_virtual_hpd_get_gpio_reg,
 687         .page_flip = &dce_virtual_page_flip,
 688         .page_flip_get_scanoutpos = &dce_virtual_crtc_get_scanoutpos,
 689         .add_encoder = NULL,
 690         .add_connector = NULL,
 691         .stop_mc_access = &dce_virtual_stop_mc_access,
 692         .resume_mc_access = &dce_virtual_resume_mc_access,
 693 };
 694
 695 static void dce_virtual_set_display_funcs(struct amdgpu_device *adev)
 696 {
 697         if (adev->mode_info.funcs == NULL)
 698                 adev->mode_info.funcs = &dce_virtual_display_funcs;
 699 }
 700
 701 static int dce_virtual_pageflip(struct amdgpu_device *adev,
 702                                 unsigned crtc_id)
 703 {
 704         unsigned long flags;
 705         struct amdgpu_crtc *amdgpu_crtc;
 706         struct amdgpu_flip_work *works;
 707
 708         amdgpu_crtc = adev->mode_info.crtcs[crtc_id];
 709
 710         if (crtc_id >= adev->mode_info.num_crtc) {
 711                 DRM_ERROR("invalid pageflip crtc %d\n", crtc_id);
 712                 return -EINVAL;
 713         }
 714
 715         /* IRQ could occur when in initial stage */
 716         if (amdgpu_crtc == NULL)
 717                 return 0;
 718
 719         spin_lock_irqsave(&adev->ddev->event_lock, flags);
 720         works = amdgpu_crtc->pflip_works;
 721         if (amdgpu_crtc->pflip_status != AMDGPU_FLIP_SUBMITTED) {
 722                 DRM_DEBUG_DRIVER("amdgpu_crtc->pflip_status = %d != "
 723                         "AMDGPU_FLIP_SUBMITTED(%d)\n",
 724                         amdgpu_crtc->pflip_status,
 725                         AMDGPU_FLIP_SUBMITTED);
 726                 spin_unlock_irqrestore(&adev->ddev->event_lock, flags);
 727                 return 0;
 728         }
 729
 730         /* page flip completed. clean up */
 731         amdgpu_crtc->pflip_status = AMDGPU_FLIP_NONE;
 732         amdgpu_crtc->pflip_works = NULL;
 733
 734         /* wakeup usersapce */
 735         if (works->event)
 736                 drm_crtc_send_vblank_event(&amdgpu_crtc->base, works->event);
 737
 738         spin_unlock_irqrestore(&adev->ddev->event_lock, flags);
 739
 740         drm_crtc_vblank_put(&amdgpu_crtc->base);
 741         schedule_work(&works->unpin_work);
 742
 743         return 0;
 744 }
 745
 746 static enum hrtimer_restart dce_virtual_vblank_timer_handle(struct hrtimer *vblank_timer)
 747 {
 748         struct amdgpu_crtc *amdgpu_crtc = container_of(vblank_timer,
 749                                                        struct amdgpu_crtc, vblank_timer);
 750         struct drm_device *ddev = amdgpu_crtc->base.dev;
 751         struct amdgpu_device *adev = ddev->dev_private;
 752
 753         drm_handle_vblank(ddev, amdgpu_crtc->crtc_id);
 754         dce_virtual_pageflip(adev, amdgpu_crtc->crtc_id);
 755         hrtimer_start(vblank_timer, ktime_set(0, DCE_VIRTUAL_VBLANK_PERIOD),
 756                       HRTIMER_MODE_REL);
 757
 758         return HRTIMER_NORESTART;
 759 }
 760
 761 static void dce_virtual_set_crtc_vblank_interrupt_state(struct amdgpu_device *adev,
 762                                                         int crtc,
 763                                                         enum amdgpu_interrupt_state state)
 764 {
 765         if (crtc >= adev->mode_info.num_crtc) {
 766                 DRM_DEBUG("invalid crtc %d\n", crtc);
 767                 return;
 768         }
 769
 770         if (state && !adev->mode_info.crtcs[crtc]->vsync_timer_enabled) {
 771                 DRM_DEBUG("Enable software vsync timer\n");
 772                 hrtimer_init(&adev->mode_info.crtcs[crtc]->vblank_timer,
 773                              CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 774                 hrtimer_set_expires(&adev->mode_info.crtcs[crtc]->vblank_timer,
 775                                     ktime_set(0, DCE_VIRTUAL_VBLANK_PERIOD));
 776                 adev->mode_info.crtcs[crtc]->vblank_timer.function =
 777                         dce_virtual_vblank_timer_handle;
 778                 hrtimer_start(&adev->mode_info.crtcs[crtc]->vblank_timer,
 779                               ktime_set(0, DCE_VIRTUAL_VBLANK_PERIOD), HRTIMER_MODE_REL);
 780         } else if (!state && adev->mode_info.crtcs[crtc]->vsync_timer_enabled) {
 781                 DRM_DEBUG("Disable software vsync timer\n");
 782                 hrtimer_cancel(&adev->mode_info.crtcs[crtc]->vblank_timer);
 783         }
 784
 785         adev->mode_info.crtcs[crtc]->vsync_timer_enabled = state;
 786         DRM_DEBUG("[FM]set crtc %d vblank interrupt state %d\n", crtc, state);
 787 }
 788
 789
 790 static int dce_virtual_set_crtc_irq_state(struct amdgpu_device *adev,
 791                                           struct amdgpu_irq_src *source,
 792                                           unsigned type,
 793                                           enum amdgpu_interrupt_state state)
 794 {
 795         if (type > AMDGPU_CRTC_IRQ_VBLANK6)
 796                 return -EINVAL;
 797
 798         dce_virtual_set_crtc_vblank_interrupt_state(adev, type, state);
 799
 800         return 0;
 801 }
 802
 803 static const struct amdgpu_irq_src_funcs dce_virtual_crtc_irq_funcs = {
 804         .set = dce_virtual_set_crtc_irq_state,
 805         .process = NULL,
 806 };
 807
 808 static void dce_virtual_set_irq_funcs(struct amdgpu_device *adev)
 809 {
 810         adev->crtc_irq.num_types = AMDGPU_CRTC_IRQ_LAST;
 811         adev->crtc_irq.funcs = &dce_virtual_crtc_irq_funcs;
 812 }
 813
 814 const struct amdgpu_ip_block_version dce_virtual_ip_block =
 815 {
 816         .type = AMD_IP_BLOCK_TYPE_DCE,
 817         .major = 1,
 818         .minor = 0,
 819         .rev = 0,
 820         .funcs = &dce_virtual_ip_funcs,
 821 };