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

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