1 /* $NetBSD: amdgpu_display.c,v 1.8 2021/12/18 23:44:58 riastradh Exp $ */ 2 3 /* 4 * Copyright 2007-8 Advanced Micro Devices, Inc. 5 * Copyright 2008 Red Hat Inc. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: Dave Airlie 26 * Alex Deucher 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: amdgpu_display.c,v 1.8 2021/12/18 23:44:58 riastradh Exp $"); 31 32 #include <drm/amdgpu_drm.h> 33 #include "amdgpu.h" 34 #include "amdgpu_i2c.h" 35 #include "atom.h" 36 #include "amdgpu_connectors.h" 37 #include "amdgpu_display.h" 38 #include <asm/div64.h> 39 40 #include <linux/pci.h> 41 #include <linux/pm_runtime.h> 42 #include <drm/drm_crtc_helper.h> 43 #include <drm/drm_edid.h> 44 #include <drm/drm_gem_framebuffer_helper.h> 45 #include <drm/drm_fb_helper.h> 46 #include <drm/drm_vblank.h> 47 48 static void amdgpu_display_flip_callback(struct dma_fence *f, 49 struct dma_fence_cb *cb) 50 { 51 struct amdgpu_flip_work *work = 52 container_of(cb, struct amdgpu_flip_work, cb); 53 54 dma_fence_put(f); 55 schedule_work(&work->flip_work.work); 56 } 57 58 static bool amdgpu_display_flip_handle_fence(struct amdgpu_flip_work *work, 59 struct dma_fence **f) 60 { 61 struct dma_fence *fence= *f; 62 63 if (fence == NULL) 64 return false; 65 66 *f = NULL; 67 68 if (!dma_fence_add_callback(fence, &work->cb, 69 amdgpu_display_flip_callback)) 70 return true; 71 72 dma_fence_put(fence); 73 return false; 74 } 75 76 static void amdgpu_display_flip_work_func(struct work_struct *__work) 77 { 78 struct delayed_work *delayed_work = 79 container_of(__work, struct delayed_work, work); 80 struct amdgpu_flip_work *work = 81 container_of(delayed_work, struct amdgpu_flip_work, flip_work); 82 struct amdgpu_device *adev = work->adev; 83 struct amdgpu_crtc *amdgpu_crtc = adev->mode_info.crtcs[work->crtc_id]; 84 85 struct drm_crtc *crtc = &amdgpu_crtc->base; 86 unsigned long flags; 87 unsigned i; 88 int vpos, hpos; 89 90 if (amdgpu_display_flip_handle_fence(work, &work->excl)) 91 return; 92 93 for (i = 0; i < work->shared_count; ++i) 94 if (amdgpu_display_flip_handle_fence(work, &work->shared[i])) 95 return; 96 97 /* Wait until we're out of the vertical blank period before the one 98 * targeted by the flip 99 */ 100 if (amdgpu_crtc->enabled && 101 (amdgpu_display_get_crtc_scanoutpos(adev->ddev, work->crtc_id, 0, 102 &vpos, &hpos, NULL, NULL, 103 &crtc->hwmode) 104 & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK)) == 105 (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK) && 106 (int)(work->target_vblank - 107 amdgpu_get_vblank_counter_kms(adev->ddev, amdgpu_crtc->crtc_id)) > 0) { 108 schedule_delayed_work(&work->flip_work, usecs_to_jiffies(1000)); 109 return; 110 } 111 112 /* We borrow the event spin lock for protecting flip_status */ 113 spin_lock_irqsave(&crtc->dev->event_lock, flags); 114 115 /* Do the flip (mmio) */ 116 adev->mode_info.funcs->page_flip(adev, work->crtc_id, work->base, work->async); 117 118 /* Set the flip status */ 119 amdgpu_crtc->pflip_status = AMDGPU_FLIP_SUBMITTED; 120 spin_unlock_irqrestore(&crtc->dev->event_lock, flags); 121 122 123 DRM_DEBUG_DRIVER("crtc:%d[%p], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: %p,\n", 124 amdgpu_crtc->crtc_id, amdgpu_crtc, work); 125 126 } 127 128 /* 129 * Handle unpin events outside the interrupt handler proper. 130 */ 131 static void amdgpu_display_unpin_work_func(struct work_struct *__work) 132 { 133 struct amdgpu_flip_work *work = 134 container_of(__work, struct amdgpu_flip_work, unpin_work); 135 int r; 136 137 /* unpin of the old buffer */ 138 r = amdgpu_bo_reserve(work->old_abo, true); 139 if (likely(r == 0)) { 140 r = amdgpu_bo_unpin(work->old_abo); 141 if (unlikely(r != 0)) { 142 DRM_ERROR("failed to unpin buffer after flip\n"); 143 } 144 amdgpu_bo_unreserve(work->old_abo); 145 } else 146 DRM_ERROR("failed to reserve buffer after flip\n"); 147 148 amdgpu_bo_unref(&work->old_abo); 149 kfree(work->shared); 150 kfree(work); 151 } 152 153 int amdgpu_display_crtc_page_flip_target(struct drm_crtc *crtc, 154 struct drm_framebuffer *fb, 155 struct drm_pending_vblank_event *event, 156 uint32_t page_flip_flags, uint32_t target, 157 struct drm_modeset_acquire_ctx *ctx) 158 { 159 struct drm_device *dev = crtc->dev; 160 struct amdgpu_device *adev = dev->dev_private; 161 struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc); 162 struct drm_gem_object *obj; 163 struct amdgpu_flip_work *work; 164 struct amdgpu_bo *new_abo; 165 unsigned long flags; 166 u64 tiling_flags; 167 int i, r; 168 169 work = kzalloc(sizeof *work, GFP_KERNEL); 170 if (work == NULL) 171 return -ENOMEM; 172 173 INIT_DELAYED_WORK(&work->flip_work, amdgpu_display_flip_work_func); 174 INIT_WORK(&work->unpin_work, amdgpu_display_unpin_work_func); 175 176 work->event = event; 177 work->adev = adev; 178 work->crtc_id = amdgpu_crtc->crtc_id; 179 work->async = (page_flip_flags & DRM_MODE_PAGE_FLIP_ASYNC) != 0; 180 181 /* schedule unpin of the old buffer */ 182 obj = crtc->primary->fb->obj[0]; 183 184 /* take a reference to the old object */ 185 work->old_abo = gem_to_amdgpu_bo(obj); 186 amdgpu_bo_ref(work->old_abo); 187 188 obj = fb->obj[0]; 189 new_abo = gem_to_amdgpu_bo(obj); 190 191 /* pin the new buffer */ 192 r = amdgpu_bo_reserve(new_abo, false); 193 if (unlikely(r != 0)) { 194 DRM_ERROR("failed to reserve new abo buffer before flip\n"); 195 goto cleanup; 196 } 197 198 if (!adev->enable_virtual_display) { 199 r = amdgpu_bo_pin(new_abo, 200 amdgpu_display_supported_domains(adev, new_abo->flags)); 201 if (unlikely(r != 0)) { 202 DRM_ERROR("failed to pin new abo buffer before flip\n"); 203 goto unreserve; 204 } 205 } 206 207 r = amdgpu_ttm_alloc_gart(&new_abo->tbo); 208 if (unlikely(r != 0)) { 209 DRM_ERROR("%p bind failed\n", new_abo); 210 goto unpin; 211 } 212 213 r = dma_resv_get_fences_rcu(new_abo->tbo.base.resv, &work->excl, 214 &work->shared_count, 215 &work->shared); 216 if (unlikely(r != 0)) { 217 DRM_ERROR("failed to get fences for buffer\n"); 218 goto unpin; 219 } 220 221 amdgpu_bo_get_tiling_flags(new_abo, &tiling_flags); 222 amdgpu_bo_unreserve(new_abo); 223 224 if (!adev->enable_virtual_display) 225 work->base = amdgpu_bo_gpu_offset(new_abo); 226 work->target_vblank = target - (uint32_t)drm_crtc_vblank_count(crtc) + 227 amdgpu_get_vblank_counter_kms(dev, work->crtc_id); 228 229 /* we borrow the event spin lock for protecting flip_wrok */ 230 spin_lock_irqsave(&crtc->dev->event_lock, flags); 231 if (amdgpu_crtc->pflip_status != AMDGPU_FLIP_NONE) { 232 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n"); 233 spin_unlock_irqrestore(&crtc->dev->event_lock, flags); 234 r = -EBUSY; 235 goto pflip_cleanup; 236 } 237 238 amdgpu_crtc->pflip_status = AMDGPU_FLIP_PENDING; 239 amdgpu_crtc->pflip_works = work; 240 241 242 DRM_DEBUG_DRIVER("crtc:%d[%p], pflip_stat:AMDGPU_FLIP_PENDING, work: %p,\n", 243 amdgpu_crtc->crtc_id, amdgpu_crtc, work); 244 /* update crtc fb */ 245 crtc->primary->fb = fb; 246 spin_unlock_irqrestore(&crtc->dev->event_lock, flags); 247 amdgpu_display_flip_work_func(&work->flip_work.work); 248 return 0; 249 250 pflip_cleanup: 251 if (unlikely(amdgpu_bo_reserve(new_abo, false) != 0)) { 252 DRM_ERROR("failed to reserve new abo in error path\n"); 253 goto cleanup; 254 } 255 unpin: 256 if (!adev->enable_virtual_display) 257 if (unlikely(amdgpu_bo_unpin(new_abo) != 0)) 258 DRM_ERROR("failed to unpin new abo in error path\n"); 259 260 unreserve: 261 amdgpu_bo_unreserve(new_abo); 262 263 cleanup: 264 amdgpu_bo_unref(&work->old_abo); 265 dma_fence_put(work->excl); 266 for (i = 0; i < work->shared_count; ++i) 267 dma_fence_put(work->shared[i]); 268 kfree(work->shared); 269 kfree(work); 270 271 return r; 272 } 273 274 int amdgpu_display_crtc_set_config(struct drm_mode_set *set, 275 struct drm_modeset_acquire_ctx *ctx) 276 { 277 struct drm_device *dev; 278 struct amdgpu_device *adev; 279 struct drm_crtc *crtc; 280 bool active = false; 281 int ret; 282 283 if (!set || !set->crtc) 284 return -EINVAL; 285 286 dev = set->crtc->dev; 287 288 ret = pm_runtime_get_sync(dev->dev); 289 if (ret < 0) 290 return ret; 291 292 ret = drm_crtc_helper_set_config(set, ctx); 293 294 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 295 if (crtc->enabled) 296 active = true; 297 298 pm_runtime_mark_last_busy(dev->dev); 299 300 adev = dev->dev_private; 301 /* if we have active crtcs and we don't have a power ref, 302 take the current one */ 303 if (active && !adev->have_disp_power_ref) { 304 adev->have_disp_power_ref = true; 305 return ret; 306 } 307 /* if we have no active crtcs, then drop the power ref 308 we got before */ 309 if (!active && adev->have_disp_power_ref) { 310 pm_runtime_put_autosuspend(dev->dev); 311 adev->have_disp_power_ref = false; 312 } 313 314 /* drop the power reference we got coming in here */ 315 pm_runtime_put_autosuspend(dev->dev); 316 return ret; 317 } 318 319 static const char *encoder_names[41] = { 320 "NONE", 321 "INTERNAL_LVDS", 322 "INTERNAL_TMDS1", 323 "INTERNAL_TMDS2", 324 "INTERNAL_DAC1", 325 "INTERNAL_DAC2", 326 "INTERNAL_SDVOA", 327 "INTERNAL_SDVOB", 328 "SI170B", 329 "CH7303", 330 "CH7301", 331 "INTERNAL_DVO1", 332 "EXTERNAL_SDVOA", 333 "EXTERNAL_SDVOB", 334 "TITFP513", 335 "INTERNAL_LVTM1", 336 "VT1623", 337 "HDMI_SI1930", 338 "HDMI_INTERNAL", 339 "INTERNAL_KLDSCP_TMDS1", 340 "INTERNAL_KLDSCP_DVO1", 341 "INTERNAL_KLDSCP_DAC1", 342 "INTERNAL_KLDSCP_DAC2", 343 "SI178", 344 "MVPU_FPGA", 345 "INTERNAL_DDI", 346 "VT1625", 347 "HDMI_SI1932", 348 "DP_AN9801", 349 "DP_DP501", 350 "INTERNAL_UNIPHY", 351 "INTERNAL_KLDSCP_LVTMA", 352 "INTERNAL_UNIPHY1", 353 "INTERNAL_UNIPHY2", 354 "NUTMEG", 355 "TRAVIS", 356 "INTERNAL_VCE", 357 "INTERNAL_UNIPHY3", 358 "HDMI_ANX9805", 359 "INTERNAL_AMCLK", 360 "VIRTUAL", 361 }; 362 363 static const char *hpd_names[6] = { 364 "HPD1", 365 "HPD2", 366 "HPD3", 367 "HPD4", 368 "HPD5", 369 "HPD6", 370 }; 371 372 void amdgpu_display_print_display_setup(struct drm_device *dev) 373 { 374 struct drm_connector *connector; 375 struct amdgpu_connector *amdgpu_connector; 376 struct drm_encoder *encoder; 377 struct amdgpu_encoder *amdgpu_encoder; 378 struct drm_connector_list_iter iter; 379 uint32_t devices; 380 int i = 0; 381 382 drm_connector_list_iter_begin(dev, &iter); 383 DRM_INFO("AMDGPU Display Connectors\n"); 384 drm_for_each_connector_iter(connector, &iter) { 385 amdgpu_connector = to_amdgpu_connector(connector); 386 DRM_INFO("Connector %d:\n", i); 387 DRM_INFO(" %s\n", connector->name); 388 if (amdgpu_connector->hpd.hpd != AMDGPU_HPD_NONE) 389 DRM_INFO(" %s\n", hpd_names[amdgpu_connector->hpd.hpd]); 390 if (amdgpu_connector->ddc_bus) { 391 DRM_INFO(" DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", 392 amdgpu_connector->ddc_bus->rec.mask_clk_reg, 393 amdgpu_connector->ddc_bus->rec.mask_data_reg, 394 amdgpu_connector->ddc_bus->rec.a_clk_reg, 395 amdgpu_connector->ddc_bus->rec.a_data_reg, 396 amdgpu_connector->ddc_bus->rec.en_clk_reg, 397 amdgpu_connector->ddc_bus->rec.en_data_reg, 398 amdgpu_connector->ddc_bus->rec.y_clk_reg, 399 amdgpu_connector->ddc_bus->rec.y_data_reg); 400 if (amdgpu_connector->router.ddc_valid) 401 DRM_INFO(" DDC Router 0x%x/0x%x\n", 402 amdgpu_connector->router.ddc_mux_control_pin, 403 amdgpu_connector->router.ddc_mux_state); 404 if (amdgpu_connector->router.cd_valid) 405 DRM_INFO(" Clock/Data Router 0x%x/0x%x\n", 406 amdgpu_connector->router.cd_mux_control_pin, 407 amdgpu_connector->router.cd_mux_state); 408 } else { 409 if (connector->connector_type == DRM_MODE_CONNECTOR_VGA || 410 connector->connector_type == DRM_MODE_CONNECTOR_DVII || 411 connector->connector_type == DRM_MODE_CONNECTOR_DVID || 412 connector->connector_type == DRM_MODE_CONNECTOR_DVIA || 413 connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || 414 connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) 415 DRM_INFO(" DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati (at) lists.x.org\n"); 416 } 417 DRM_INFO(" Encoders:\n"); 418 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 419 amdgpu_encoder = to_amdgpu_encoder(encoder); 420 devices = amdgpu_encoder->devices & amdgpu_connector->devices; 421 if (devices) { 422 if (devices & ATOM_DEVICE_CRT1_SUPPORT) 423 DRM_INFO(" CRT1: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 424 if (devices & ATOM_DEVICE_CRT2_SUPPORT) 425 DRM_INFO(" CRT2: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 426 if (devices & ATOM_DEVICE_LCD1_SUPPORT) 427 DRM_INFO(" LCD1: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 428 if (devices & ATOM_DEVICE_DFP1_SUPPORT) 429 DRM_INFO(" DFP1: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 430 if (devices & ATOM_DEVICE_DFP2_SUPPORT) 431 DRM_INFO(" DFP2: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 432 if (devices & ATOM_DEVICE_DFP3_SUPPORT) 433 DRM_INFO(" DFP3: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 434 if (devices & ATOM_DEVICE_DFP4_SUPPORT) 435 DRM_INFO(" DFP4: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 436 if (devices & ATOM_DEVICE_DFP5_SUPPORT) 437 DRM_INFO(" DFP5: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 438 if (devices & ATOM_DEVICE_DFP6_SUPPORT) 439 DRM_INFO(" DFP6: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 440 if (devices & ATOM_DEVICE_TV1_SUPPORT) 441 DRM_INFO(" TV1: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 442 if (devices & ATOM_DEVICE_CV_SUPPORT) 443 DRM_INFO(" CV: %s\n", encoder_names[amdgpu_encoder->encoder_id]); 444 } 445 } 446 i++; 447 } 448 drm_connector_list_iter_end(&iter); 449 } 450 451 /** 452 * amdgpu_display_ddc_probe 453 * 454 */ 455 bool amdgpu_display_ddc_probe(struct amdgpu_connector *amdgpu_connector, 456 bool use_aux) 457 { 458 u8 out = 0x0; 459 u8 buf[8]; 460 int ret; 461 struct i2c_msg msgs[] = { 462 { 463 .addr = DDC_ADDR, 464 .flags = 0, 465 .len = 1, 466 .buf = &out, 467 }, 468 { 469 .addr = DDC_ADDR, 470 .flags = I2C_M_RD, 471 .len = 8, 472 .buf = buf, 473 } 474 }; 475 476 /* on hw with routers, select right port */ 477 if (amdgpu_connector->router.ddc_valid) 478 amdgpu_i2c_router_select_ddc_port(amdgpu_connector); 479 480 if (use_aux) { 481 ret = i2c_transfer(&amdgpu_connector->ddc_bus->aux.ddc, msgs, 2); 482 } else { 483 ret = i2c_transfer(&amdgpu_connector->ddc_bus->adapter, msgs, 2); 484 } 485 486 if (ret != 2) 487 /* Couldn't find an accessible DDC on this connector */ 488 return false; 489 /* Probe also for valid EDID header 490 * EDID header starts with: 491 * 0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00. 492 * Only the first 6 bytes must be valid as 493 * drm_edid_block_valid() can fix the last 2 bytes */ 494 if (drm_edid_header_is_valid(buf) < 6) { 495 /* Couldn't find an accessible EDID on this 496 * connector */ 497 return false; 498 } 499 return true; 500 } 501 502 static const struct drm_framebuffer_funcs amdgpu_fb_funcs = { 503 .destroy = drm_gem_fb_destroy, 504 .create_handle = drm_gem_fb_create_handle, 505 }; 506 507 uint32_t amdgpu_display_supported_domains(struct amdgpu_device *adev, 508 uint64_t bo_flags) 509 { 510 uint32_t domain = AMDGPU_GEM_DOMAIN_VRAM; 511 512 #if defined(CONFIG_DRM_AMD_DC) 513 /* 514 * if amdgpu_bo_support_uswc returns false it means that USWC mappings 515 * is not supported for this board. But this mapping is required 516 * to avoid hang caused by placement of scanout BO in GTT on certain 517 * APUs. So force the BO placement to VRAM in case this architecture 518 * will not allow USWC mappings. 519 * Also, don't allow GTT domain if the BO doens't have USWC falg set. 520 */ 521 if ((bo_flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) && 522 amdgpu_bo_support_uswc(bo_flags) && 523 amdgpu_device_asic_has_dc_support(adev->asic_type)) { 524 switch (adev->asic_type) { 525 case CHIP_CARRIZO: 526 case CHIP_STONEY: 527 domain |= AMDGPU_GEM_DOMAIN_GTT; 528 break; 529 case CHIP_RAVEN: 530 /* enable S/G on PCO and RV2 */ 531 if (adev->rev_id >= 0x8 || adev->pdev->device == 0x15d8) 532 domain |= AMDGPU_GEM_DOMAIN_GTT; 533 break; 534 default: 535 break; 536 } 537 } 538 #endif 539 540 return domain; 541 } 542 543 int amdgpu_display_framebuffer_init(struct drm_device *dev, 544 struct amdgpu_framebuffer *rfb, 545 const struct drm_mode_fb_cmd2 *mode_cmd, 546 struct drm_gem_object *obj) 547 { 548 int ret; 549 rfb->base.obj[0] = obj; 550 drm_helper_mode_fill_fb_struct(dev, &rfb->base, mode_cmd); 551 ret = drm_framebuffer_init(dev, &rfb->base, &amdgpu_fb_funcs); 552 if (ret) { 553 rfb->base.obj[0] = NULL; 554 return ret; 555 } 556 return 0; 557 } 558 559 struct drm_framebuffer * 560 amdgpu_display_user_framebuffer_create(struct drm_device *dev, 561 struct drm_file *file_priv, 562 const struct drm_mode_fb_cmd2 *mode_cmd) 563 { 564 struct drm_gem_object *obj; 565 struct amdgpu_framebuffer *amdgpu_fb; 566 int ret; 567 568 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]); 569 if (obj == NULL) { 570 dev_err(pci_dev_dev(dev->pdev), "No GEM object associated to handle 0x%08X, " 571 "can't create framebuffer\n", mode_cmd->handles[0]); 572 return ERR_PTR(-ENOENT); 573 } 574 575 /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */ 576 if (obj->import_attach) { 577 DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n"); 578 return ERR_PTR(-EINVAL); 579 } 580 581 amdgpu_fb = kzalloc(sizeof(*amdgpu_fb), GFP_KERNEL); 582 if (amdgpu_fb == NULL) { 583 drm_gem_object_put_unlocked(obj); 584 return ERR_PTR(-ENOMEM); 585 } 586 587 ret = amdgpu_display_framebuffer_init(dev, amdgpu_fb, mode_cmd, obj); 588 if (ret) { 589 kfree(amdgpu_fb); 590 drm_gem_object_put_unlocked(obj); 591 return ERR_PTR(ret); 592 } 593 594 return &amdgpu_fb->base; 595 } 596 597 const struct drm_mode_config_funcs amdgpu_mode_funcs = { 598 .fb_create = amdgpu_display_user_framebuffer_create, 599 .output_poll_changed = drm_fb_helper_output_poll_changed, 600 }; 601 602 static const struct drm_prop_enum_list amdgpu_underscan_enum_list[] = 603 { { UNDERSCAN_OFF, "off" }, 604 { UNDERSCAN_ON, "on" }, 605 { UNDERSCAN_AUTO, "auto" }, 606 }; 607 608 static const struct drm_prop_enum_list amdgpu_audio_enum_list[] = 609 { { AMDGPU_AUDIO_DISABLE, "off" }, 610 { AMDGPU_AUDIO_ENABLE, "on" }, 611 { AMDGPU_AUDIO_AUTO, "auto" }, 612 }; 613 614 /* XXX support different dither options? spatial, temporal, both, etc. */ 615 static const struct drm_prop_enum_list amdgpu_dither_enum_list[] = 616 { { AMDGPU_FMT_DITHER_DISABLE, "off" }, 617 { AMDGPU_FMT_DITHER_ENABLE, "on" }, 618 }; 619 620 int amdgpu_display_modeset_create_props(struct amdgpu_device *adev) 621 { 622 int sz; 623 624 adev->mode_info.coherent_mode_property = 625 drm_property_create_range(adev->ddev, 0 , "coherent", 0, 1); 626 if (!adev->mode_info.coherent_mode_property) 627 return -ENOMEM; 628 629 adev->mode_info.load_detect_property = 630 drm_property_create_range(adev->ddev, 0, "load detection", 0, 1); 631 if (!adev->mode_info.load_detect_property) 632 return -ENOMEM; 633 634 drm_mode_create_scaling_mode_property(adev->ddev); 635 636 sz = ARRAY_SIZE(amdgpu_underscan_enum_list); 637 adev->mode_info.underscan_property = 638 drm_property_create_enum(adev->ddev, 0, 639 "underscan", 640 amdgpu_underscan_enum_list, sz); 641 642 adev->mode_info.underscan_hborder_property = 643 drm_property_create_range(adev->ddev, 0, 644 "underscan hborder", 0, 128); 645 if (!adev->mode_info.underscan_hborder_property) 646 return -ENOMEM; 647 648 adev->mode_info.underscan_vborder_property = 649 drm_property_create_range(adev->ddev, 0, 650 "underscan vborder", 0, 128); 651 if (!adev->mode_info.underscan_vborder_property) 652 return -ENOMEM; 653 654 sz = ARRAY_SIZE(amdgpu_audio_enum_list); 655 adev->mode_info.audio_property = 656 drm_property_create_enum(adev->ddev, 0, 657 "audio", 658 amdgpu_audio_enum_list, sz); 659 660 sz = ARRAY_SIZE(amdgpu_dither_enum_list); 661 adev->mode_info.dither_property = 662 drm_property_create_enum(adev->ddev, 0, 663 "dither", 664 amdgpu_dither_enum_list, sz); 665 666 if (amdgpu_device_has_dc_support(adev)) { 667 adev->mode_info.abm_level_property = 668 drm_property_create_range(adev->ddev, 0, 669 "abm level", 0, 4); 670 if (!adev->mode_info.abm_level_property) 671 return -ENOMEM; 672 } 673 674 return 0; 675 } 676 677 void amdgpu_display_update_priority(struct amdgpu_device *adev) 678 { 679 /* adjustment options for the display watermarks */ 680 if ((amdgpu_disp_priority == 0) || (amdgpu_disp_priority > 2)) 681 adev->mode_info.disp_priority = 0; 682 else 683 adev->mode_info.disp_priority = amdgpu_disp_priority; 684 685 } 686 687 static bool amdgpu_display_is_hdtv_mode(const struct drm_display_mode *mode) 688 { 689 /* try and guess if this is a tv or a monitor */ 690 if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */ 691 (mode->vdisplay == 576) || /* 576p */ 692 (mode->vdisplay == 720) || /* 720p */ 693 (mode->vdisplay == 1080)) /* 1080p */ 694 return true; 695 else 696 return false; 697 } 698 699 bool amdgpu_display_crtc_scaling_mode_fixup(struct drm_crtc *crtc, 700 const struct drm_display_mode *mode, 701 struct drm_display_mode *adjusted_mode) 702 { 703 struct drm_device *dev = crtc->dev; 704 struct drm_encoder *encoder; 705 struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc); 706 struct amdgpu_encoder *amdgpu_encoder; 707 struct drm_connector *connector; 708 u32 src_v = 1, dst_v = 1; 709 u32 src_h = 1, dst_h = 1; 710 711 amdgpu_crtc->h_border = 0; 712 amdgpu_crtc->v_border = 0; 713 714 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 715 if (encoder->crtc != crtc) 716 continue; 717 amdgpu_encoder = to_amdgpu_encoder(encoder); 718 connector = amdgpu_get_connector_for_encoder(encoder); 719 720 /* set scaling */ 721 if (amdgpu_encoder->rmx_type == RMX_OFF) 722 amdgpu_crtc->rmx_type = RMX_OFF; 723 else if (mode->hdisplay < amdgpu_encoder->native_mode.hdisplay || 724 mode->vdisplay < amdgpu_encoder->native_mode.vdisplay) 725 amdgpu_crtc->rmx_type = amdgpu_encoder->rmx_type; 726 else 727 amdgpu_crtc->rmx_type = RMX_OFF; 728 /* copy native mode */ 729 memcpy(&amdgpu_crtc->native_mode, 730 &amdgpu_encoder->native_mode, 731 sizeof(struct drm_display_mode)); 732 src_v = crtc->mode.vdisplay; 733 dst_v = amdgpu_crtc->native_mode.vdisplay; 734 src_h = crtc->mode.hdisplay; 735 dst_h = amdgpu_crtc->native_mode.hdisplay; 736 737 /* fix up for overscan on hdmi */ 738 if ((!(mode->flags & DRM_MODE_FLAG_INTERLACE)) && 739 ((amdgpu_encoder->underscan_type == UNDERSCAN_ON) || 740 ((amdgpu_encoder->underscan_type == UNDERSCAN_AUTO) && 741 drm_detect_hdmi_monitor(amdgpu_connector_edid(connector)) && 742 amdgpu_display_is_hdtv_mode(mode)))) { 743 if (amdgpu_encoder->underscan_hborder != 0) 744 amdgpu_crtc->h_border = amdgpu_encoder->underscan_hborder; 745 else 746 amdgpu_crtc->h_border = (mode->hdisplay >> 5) + 16; 747 if (amdgpu_encoder->underscan_vborder != 0) 748 amdgpu_crtc->v_border = amdgpu_encoder->underscan_vborder; 749 else 750 amdgpu_crtc->v_border = (mode->vdisplay >> 5) + 16; 751 amdgpu_crtc->rmx_type = RMX_FULL; 752 src_v = crtc->mode.vdisplay; 753 dst_v = crtc->mode.vdisplay - (amdgpu_crtc->v_border * 2); 754 src_h = crtc->mode.hdisplay; 755 dst_h = crtc->mode.hdisplay - (amdgpu_crtc->h_border * 2); 756 } 757 } 758 if (amdgpu_crtc->rmx_type != RMX_OFF) { 759 fixed20_12 a, b; 760 a.full = dfixed_const(src_v); 761 b.full = dfixed_const(dst_v); 762 amdgpu_crtc->vsc.full = dfixed_div(a, b); 763 a.full = dfixed_const(src_h); 764 b.full = dfixed_const(dst_h); 765 amdgpu_crtc->hsc.full = dfixed_div(a, b); 766 } else { 767 amdgpu_crtc->vsc.full = dfixed_const(1); 768 amdgpu_crtc->hsc.full = dfixed_const(1); 769 } 770 return true; 771 } 772 773 /* 774 * Retrieve current video scanout position of crtc on a given gpu, and 775 * an optional accurate timestamp of when query happened. 776 * 777 * \param dev Device to query. 778 * \param pipe Crtc to query. 779 * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0). 780 * For driver internal use only also supports these flags: 781 * 782 * USE_REAL_VBLANKSTART to use the real start of vblank instead 783 * of a fudged earlier start of vblank. 784 * 785 * GET_DISTANCE_TO_VBLANKSTART to return distance to the 786 * fudged earlier start of vblank in *vpos and the distance 787 * to true start of vblank in *hpos. 788 * 789 * \param *vpos Location where vertical scanout position should be stored. 790 * \param *hpos Location where horizontal scanout position should go. 791 * \param *stime Target location for timestamp taken immediately before 792 * scanout position query. Can be NULL to skip timestamp. 793 * \param *etime Target location for timestamp taken immediately after 794 * scanout position query. Can be NULL to skip timestamp. 795 * 796 * Returns vpos as a positive number while in active scanout area. 797 * Returns vpos as a negative number inside vblank, counting the number 798 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 799 * until start of active scanout / end of vblank." 800 * 801 * \return Flags, or'ed together as follows: 802 * 803 * DRM_SCANOUTPOS_VALID = Query successful. 804 * DRM_SCANOUTPOS_INVBL = Inside vblank. 805 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 806 * this flag means that returned position may be offset by a constant but 807 * unknown small number of scanlines wrt. real scanout position. 808 * 809 */ 810 int amdgpu_display_get_crtc_scanoutpos(struct drm_device *dev, 811 unsigned int pipe, unsigned int flags, int *vpos, 812 int *hpos, ktime_t *stime, ktime_t *etime, 813 const struct drm_display_mode *mode) 814 { 815 u32 vbl = 0, position = 0; 816 int vbl_start, vbl_end, vtotal, ret = 0; 817 bool in_vbl = true; 818 819 struct amdgpu_device *adev = dev->dev_private; 820 821 /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */ 822 823 /* Get optional system timestamp before query. */ 824 if (stime) 825 *stime = ktime_get(); 826 827 if (amdgpu_display_page_flip_get_scanoutpos(adev, pipe, &vbl, &position) == 0) 828 ret |= DRM_SCANOUTPOS_VALID; 829 830 /* Get optional system timestamp after query. */ 831 if (etime) 832 *etime = ktime_get(); 833 834 /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */ 835 836 /* Decode into vertical and horizontal scanout position. */ 837 *vpos = position & 0x1fff; 838 *hpos = (position >> 16) & 0x1fff; 839 840 /* Valid vblank area boundaries from gpu retrieved? */ 841 if (vbl > 0) { 842 /* Yes: Decode. */ 843 ret |= DRM_SCANOUTPOS_ACCURATE; 844 vbl_start = vbl & 0x1fff; 845 vbl_end = (vbl >> 16) & 0x1fff; 846 } 847 else { 848 /* No: Fake something reasonable which gives at least ok results. */ 849 vbl_start = mode->crtc_vdisplay; 850 vbl_end = 0; 851 } 852 853 /* Called from driver internal vblank counter query code? */ 854 if (flags & GET_DISTANCE_TO_VBLANKSTART) { 855 /* Caller wants distance from real vbl_start in *hpos */ 856 *hpos = *vpos - vbl_start; 857 } 858 859 /* Fudge vblank to start a few scanlines earlier to handle the 860 * problem that vblank irqs fire a few scanlines before start 861 * of vblank. Some driver internal callers need the true vblank 862 * start to be used and signal this via the USE_REAL_VBLANKSTART flag. 863 * 864 * The cause of the "early" vblank irq is that the irq is triggered 865 * by the line buffer logic when the line buffer read position enters 866 * the vblank, whereas our crtc scanout position naturally lags the 867 * line buffer read position. 868 */ 869 if (!(flags & USE_REAL_VBLANKSTART)) 870 vbl_start -= adev->mode_info.crtcs[pipe]->lb_vblank_lead_lines; 871 872 /* Test scanout position against vblank region. */ 873 if ((*vpos < vbl_start) && (*vpos >= vbl_end)) 874 in_vbl = false; 875 876 /* In vblank? */ 877 if (in_vbl) 878 ret |= DRM_SCANOUTPOS_IN_VBLANK; 879 880 /* Called from driver internal vblank counter query code? */ 881 if (flags & GET_DISTANCE_TO_VBLANKSTART) { 882 /* Caller wants distance from fudged earlier vbl_start */ 883 *vpos -= vbl_start; 884 return ret; 885 } 886 887 /* Check if inside vblank area and apply corrective offsets: 888 * vpos will then be >=0 in video scanout area, but negative 889 * within vblank area, counting down the number of lines until 890 * start of scanout. 891 */ 892 893 /* Inside "upper part" of vblank area? Apply corrective offset if so: */ 894 if (in_vbl && (*vpos >= vbl_start)) { 895 vtotal = mode->crtc_vtotal; 896 897 /* With variable refresh rate displays the vpos can exceed 898 * the vtotal value. Clamp to 0 to return -vbl_end instead 899 * of guessing the remaining number of lines until scanout. 900 */ 901 *vpos = (*vpos < vtotal) ? (*vpos - vtotal) : 0; 902 } 903 904 /* Correct for shifted end of vbl at vbl_end. */ 905 *vpos = *vpos - vbl_end; 906 907 return ret; 908 } 909 910 int amdgpu_display_crtc_idx_to_irq_type(struct amdgpu_device *adev, int crtc) 911 { 912 if (crtc < 0 || crtc >= adev->mode_info.num_crtc) 913 return AMDGPU_CRTC_IRQ_NONE; 914 915 switch (crtc) { 916 case 0: 917 return AMDGPU_CRTC_IRQ_VBLANK1; 918 case 1: 919 return AMDGPU_CRTC_IRQ_VBLANK2; 920 case 2: 921 return AMDGPU_CRTC_IRQ_VBLANK3; 922 case 3: 923 return AMDGPU_CRTC_IRQ_VBLANK4; 924 case 4: 925 return AMDGPU_CRTC_IRQ_VBLANK5; 926 case 5: 927 return AMDGPU_CRTC_IRQ_VBLANK6; 928 default: 929 return AMDGPU_CRTC_IRQ_NONE; 930 } 931 } 932
Indexes created Sat Sep 20 22:09:52 GMT 2025