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 <asm/div64.h>
  33
  34 #include <linux/pm_runtime.h>
  35 #include <drm/drm_crtc_helper.h>
  36 #include <drm/drm_edid.h>
  37
  38
  39 static void amdgpu_flip_work_func(struct work_struct *__work)
  40 {
  41         struct amdgpu_flip_work *work =
  42                 container_of(__work, struct amdgpu_flip_work, flip_work);
  43         struct amdgpu_device *adev = work->adev;
  44         struct amdgpu_crtc *amdgpuCrtc = adev->mode_info.crtcs[work->crtc_id];
  45
  46         struct drm_crtc *crtc = &amdgpuCrtc->base;
  47         struct amdgpu_fence *fence;
  48         unsigned long flags;
  49         int r;
  50
  51         down_read(&adev->exclusive_lock);
  52         if (work->fence) {
  53                 fence = to_amdgpu_fence(work->fence);
  54                 if (fence) {
  55                         r = amdgpu_fence_wait(fence, false);
  56                         if (r == -EDEADLK) {
  57                                 up_read(&adev->exclusive_lock);
  58                                 r = amdgpu_gpu_reset(adev);
  59                                 down_read(&adev->exclusive_lock);
  60                         }
  61                 } else
  62                         r = fence_wait(work->fence, false);
  63
  64                 if (r)
  65                         DRM_ERROR("failed to wait on page flip fence (%d)!\n", r);
  66
  67                 /* We continue with the page flip even if we failed to wait on
  68                  * the fence, otherwise the DRM core and userspace will be
  69                  * confused about which BO the CRTC is scanning out
  70                  */
  71
  72                 fence_put(work->fence);
  73                 work->fence = NULL;
  74         }
  75
  76         /* We borrow the event spin lock for protecting flip_status */
  77         spin_lock_irqsave(&crtc->dev->event_lock, flags);
  78
  79         /* set the proper interrupt */
  80         amdgpu_irq_get(adev, &adev->pageflip_irq, work->crtc_id);
  81         /* do the flip (mmio) */
  82         adev->mode_info.funcs->page_flip(adev, work->crtc_id, work->base);
  83         /* set the flip status */
  84         amdgpuCrtc->pflip_status = AMDGPU_FLIP_SUBMITTED;
  85
  86         spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
  87         up_read(&adev->exclusive_lock);
  88 }
  89
  90 /*
  91  * Handle unpin events outside the interrupt handler proper.
  92  */
  93 static void amdgpu_unpin_work_func(struct work_struct *__work)
  94 {
  95         struct amdgpu_flip_work *work =
  96                 container_of(__work, struct amdgpu_flip_work, unpin_work);
  97         int r;
  98
  99         /* unpin of the old buffer */
 100         r = amdgpu_bo_reserve(work->old_rbo, false);
 101         if (likely(r == 0)) {
 102                 r = amdgpu_bo_unpin(work->old_rbo);
 103                 if (unlikely(r != 0)) {
 104                         DRM_ERROR("failed to unpin buffer after flip\n");
 105                 }
 106                 amdgpu_bo_unreserve(work->old_rbo);
 107         } else
 108                 DRM_ERROR("failed to reserve buffer after flip\n");
 109
 110         drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
 111         kfree(work);
 112 }
 113
 114 int amdgpu_crtc_page_flip(struct drm_crtc *crtc,
 115                           struct drm_framebuffer *fb,
 116                           struct drm_pending_vblank_event *event,
 117                           uint32_t page_flip_flags)
 118 {
 119         struct drm_device *dev = crtc->dev;
 120         struct amdgpu_device *adev = dev->dev_private;
 121         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 122         struct amdgpu_framebuffer *old_amdgpu_fb;
 123         struct amdgpu_framebuffer *new_amdgpu_fb;
 124         struct drm_gem_object *obj;
 125         struct amdgpu_flip_work *work;
 126         struct amdgpu_bo *new_rbo;
 127         unsigned long flags;
 128         u64 tiling_flags;
 129         u64 base;
 130         int r;
 131
 132         work = kzalloc(sizeof *work, GFP_KERNEL);
 133         if (work == NULL)
 134                 return -ENOMEM;
 135
 136         INIT_WORK(&work->flip_work, amdgpu_flip_work_func);
 137         INIT_WORK(&work->unpin_work, amdgpu_unpin_work_func);
 138
 139         work->event = event;
 140         work->adev = adev;
 141         work->crtc_id = amdgpu_crtc->crtc_id;
 142
 143         /* schedule unpin of the old buffer */
 144         old_amdgpu_fb = to_amdgpu_framebuffer(crtc->primary->fb);
 145         obj = old_amdgpu_fb->obj;
 146
 147         /* take a reference to the old object */
 148         drm_gem_object_reference(obj);
 149         work->old_rbo = gem_to_amdgpu_bo(obj);
 150
 151         new_amdgpu_fb = to_amdgpu_framebuffer(fb);
 152         obj = new_amdgpu_fb->obj;
 153         new_rbo = gem_to_amdgpu_bo(obj);
 154
 155         /* pin the new buffer */
 156         r = amdgpu_bo_reserve(new_rbo, false);
 157         if (unlikely(r != 0)) {
 158                 DRM_ERROR("failed to reserve new rbo buffer before flip\n");
 159                 goto cleanup;
 160         }
 161
 162         r = amdgpu_bo_pin_restricted(new_rbo, AMDGPU_GEM_DOMAIN_VRAM, 0, 0, &base);
 163         if (unlikely(r != 0)) {
 164                 amdgpu_bo_unreserve(new_rbo);
 165                 r = -EINVAL;
 166                 DRM_ERROR("failed to pin new rbo buffer before flip\n");
 167                 goto cleanup;
 168         }
 169
 170         work->fence = fence_get(reservation_object_get_excl(new_rbo->tbo.resv));
 171         amdgpu_bo_get_tiling_flags(new_rbo, &tiling_flags);
 172         amdgpu_bo_unreserve(new_rbo);
 173
 174         work->base = base;
 175
 176         r = drm_vblank_get(crtc->dev, amdgpu_crtc->crtc_id);
 177         if (r) {
 178                 DRM_ERROR("failed to get vblank before flip\n");
 179                 goto pflip_cleanup;
 180         }
 181
 182         /* we borrow the event spin lock for protecting flip_wrok */
 183         spin_lock_irqsave(&crtc->dev->event_lock, flags);
 184         if (amdgpu_crtc->pflip_status != AMDGPU_FLIP_NONE) {
 185                 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
 186                 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 187                 r = -EBUSY;
 188                 goto vblank_cleanup;
 189         }
 190
 191         amdgpu_crtc->pflip_status = AMDGPU_FLIP_PENDING;
 192         amdgpu_crtc->pflip_works = work;
 193
 194         /* update crtc fb */
 195         crtc->primary->fb = fb;
 196         spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 197         queue_work(amdgpu_crtc->pflip_queue, &work->flip_work);
 198         return 0;
 199
 200 vblank_cleanup:
 201         drm_vblank_put(crtc->dev, amdgpu_crtc->crtc_id);
 202
 203 pflip_cleanup:
 204         if (unlikely(amdgpu_bo_reserve(new_rbo, false) != 0)) {
 205                 DRM_ERROR("failed to reserve new rbo in error path\n");
 206                 goto cleanup;
 207         }
 208         if (unlikely(amdgpu_bo_unpin(new_rbo) != 0)) {
 209                 DRM_ERROR("failed to unpin new rbo in error path\n");
 210         }
 211         amdgpu_bo_unreserve(new_rbo);
 212
 213 cleanup:
 214         drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
 215         fence_put(work->fence);
 216         kfree(work);
 217
 218         return r;
 219 }
 220
 221 int amdgpu_crtc_set_config(struct drm_mode_set *set)
 222 {
 223         struct drm_device *dev;
 224         struct amdgpu_device *adev;
 225         struct drm_crtc *crtc;
 226         bool active = false;
 227         int ret;
 228
 229         if (!set || !set->crtc)
 230                 return -EINVAL;
 231
 232         dev = set->crtc->dev;
 233
 234         ret = pm_runtime_get_sync(dev->dev);
 235         if (ret < 0)
 236                 return ret;
 237
 238         ret = drm_crtc_helper_set_config(set);
 239
 240         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 241                 if (crtc->enabled)
 242                         active = true;
 243
 244         pm_runtime_mark_last_busy(dev->dev);
 245
 246         adev = dev->dev_private;
 247         /* if we have active crtcs and we don't have a power ref,
 248            take the current one */
 249         if (active && !adev->have_disp_power_ref) {
 250                 adev->have_disp_power_ref = true;
 251                 return ret;
 252         }
 253         /* if we have no active crtcs, then drop the power ref
 254            we got before */
 255         if (!active && adev->have_disp_power_ref) {
 256                 pm_runtime_put_autosuspend(dev->dev);
 257                 adev->have_disp_power_ref = false;
 258         }
 259
 260         /* drop the power reference we got coming in here */
 261         pm_runtime_put_autosuspend(dev->dev);
 262         return ret;
 263 }
 264
 265 static const char *encoder_names[38] = {
 266         "NONE",
 267         "INTERNAL_LVDS",
 268         "INTERNAL_TMDS1",
 269         "INTERNAL_TMDS2",
 270         "INTERNAL_DAC1",
 271         "INTERNAL_DAC2",
 272         "INTERNAL_SDVOA",
 273         "INTERNAL_SDVOB",
 274         "SI170B",
 275         "CH7303",
 276         "CH7301",
 277         "INTERNAL_DVO1",
 278         "EXTERNAL_SDVOA",
 279         "EXTERNAL_SDVOB",
 280         "TITFP513",
 281         "INTERNAL_LVTM1",
 282         "VT1623",
 283         "HDMI_SI1930",
 284         "HDMI_INTERNAL",
 285         "INTERNAL_KLDSCP_TMDS1",
 286         "INTERNAL_KLDSCP_DVO1",
 287         "INTERNAL_KLDSCP_DAC1",
 288         "INTERNAL_KLDSCP_DAC2",
 289         "SI178",
 290         "MVPU_FPGA",
 291         "INTERNAL_DDI",
 292         "VT1625",
 293         "HDMI_SI1932",
 294         "DP_AN9801",
 295         "DP_DP501",
 296         "INTERNAL_UNIPHY",
 297         "INTERNAL_KLDSCP_LVTMA",
 298         "INTERNAL_UNIPHY1",
 299         "INTERNAL_UNIPHY2",
 300         "NUTMEG",
 301         "TRAVIS",
 302         "INTERNAL_VCE",
 303         "INTERNAL_UNIPHY3",
 304 };
 305
 306 static const char *hpd_names[6] = {
 307         "HPD1",
 308         "HPD2",
 309         "HPD3",
 310         "HPD4",
 311         "HPD5",
 312         "HPD6",
 313 };
 314
 315 void amdgpu_print_display_setup(struct drm_device *dev)
 316 {
 317         struct drm_connector *connector;
 318         struct amdgpu_connector *amdgpu_connector;
 319         struct drm_encoder *encoder;
 320         struct amdgpu_encoder *amdgpu_encoder;
 321         uint32_t devices;
 322         int i = 0;
 323
 324         DRM_INFO("AMDGPU Display Connectors\n");
 325         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 326                 amdgpu_connector = to_amdgpu_connector(connector);
 327                 DRM_INFO("Connector %d:\n", i);
 328                 DRM_INFO("  %s\n", connector->name);
 329                 if (amdgpu_connector->hpd.hpd != AMDGPU_HPD_NONE)
 330                         DRM_INFO("  %s\n", hpd_names[amdgpu_connector->hpd.hpd]);
 331                 if (amdgpu_connector->ddc_bus) {
 332                         DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
 333                                  amdgpu_connector->ddc_bus->rec.mask_clk_reg,
 334                                  amdgpu_connector->ddc_bus->rec.mask_data_reg,
 335                                  amdgpu_connector->ddc_bus->rec.a_clk_reg,
 336                                  amdgpu_connector->ddc_bus->rec.a_data_reg,
 337                                  amdgpu_connector->ddc_bus->rec.en_clk_reg,
 338                                  amdgpu_connector->ddc_bus->rec.en_data_reg,
 339                                  amdgpu_connector->ddc_bus->rec.y_clk_reg,
 340                                  amdgpu_connector->ddc_bus->rec.y_data_reg);
 341                         if (amdgpu_connector->router.ddc_valid)
 342                                 DRM_INFO("  DDC Router 0x%x/0x%x\n",
 343                                          amdgpu_connector->router.ddc_mux_control_pin,
 344                                          amdgpu_connector->router.ddc_mux_state);
 345                         if (amdgpu_connector->router.cd_valid)
 346                                 DRM_INFO("  Clock/Data Router 0x%x/0x%x\n",
 347                                          amdgpu_connector->router.cd_mux_control_pin,
 348                                          amdgpu_connector->router.cd_mux_state);
 349                 } else {
 350                         if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
 351                             connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 352                             connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 353                             connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
 354                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 355                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
 356                                 DRM_INFO("  DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
 357                 }
 358                 DRM_INFO("  Encoders:\n");
 359                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 360                         amdgpu_encoder = to_amdgpu_encoder(encoder);
 361                         devices = amdgpu_encoder->devices & amdgpu_connector->devices;
 362                         if (devices) {
 363                                 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
 364                                         DRM_INFO("    CRT1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 365                                 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
 366                                         DRM_INFO("    CRT2: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 367                                 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
 368                                         DRM_INFO("    LCD1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 369                                 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
 370                                         DRM_INFO("    DFP1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 371                                 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
 372                                         DRM_INFO("    DFP2: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 373                                 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
 374                                         DRM_INFO("    DFP3: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 375                                 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
 376                                         DRM_INFO("    DFP4: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 377                                 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
 378                                         DRM_INFO("    DFP5: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 379                                 if (devices & ATOM_DEVICE_DFP6_SUPPORT)
 380                                         DRM_INFO("    DFP6: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 381                                 if (devices & ATOM_DEVICE_TV1_SUPPORT)
 382                                         DRM_INFO("    TV1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 383                                 if (devices & ATOM_DEVICE_CV_SUPPORT)
 384                                         DRM_INFO("    CV: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 385                         }
 386                 }
 387                 i++;
 388         }
 389 }
 390
 391 /**
 392  * amdgpu_ddc_probe
 393  *
 394  */
 395 bool amdgpu_ddc_probe(struct amdgpu_connector *amdgpu_connector,
 396                        bool use_aux)
 397 {
 398         u8 out = 0x0;
 399         u8 buf[8];
 400         int ret;
 401         struct i2c_msg msgs[] = {
 402                 {
 403                         .addr = DDC_ADDR,
 404                         .flags = 0,
 405                         .len = 1,
 406                         .buf = &out,
 407                 },
 408                 {
 409                         .addr = DDC_ADDR,
 410                         .flags = I2C_M_RD,
 411                         .len = 8,
 412                         .buf = buf,
 413                 }
 414         };
 415
 416         /* on hw with routers, select right port */
 417         if (amdgpu_connector->router.ddc_valid)
 418                 amdgpu_i2c_router_select_ddc_port(amdgpu_connector);
 419
 420         if (use_aux) {
 421                 ret = i2c_transfer(&amdgpu_connector->ddc_bus->aux.ddc, msgs, 2);
 422         } else {
 423                 ret = i2c_transfer(&amdgpu_connector->ddc_bus->adapter, msgs, 2);
 424         }
 425
 426         if (ret != 2)
 427                 /* Couldn't find an accessible DDC on this connector */
 428                 return false;
 429         /* Probe also for valid EDID header
 430          * EDID header starts with:
 431          * 0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00.
 432          * Only the first 6 bytes must be valid as
 433          * drm_edid_block_valid() can fix the last 2 bytes */
 434         if (drm_edid_header_is_valid(buf) < 6) {
 435                 /* Couldn't find an accessible EDID on this
 436                  * connector */
 437                 return false;
 438         }
 439         return true;
 440 }
 441
 442 static void amdgpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
 443 {
 444         struct amdgpu_framebuffer *amdgpu_fb = to_amdgpu_framebuffer(fb);
 445
 446         if (amdgpu_fb->obj) {
 447                 drm_gem_object_unreference_unlocked(amdgpu_fb->obj);
 448         }
 449         drm_framebuffer_cleanup(fb);
 450         kfree(amdgpu_fb);
 451 }
 452
 453 static int amdgpu_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 454                                                   struct drm_file *file_priv,
 455                                                   unsigned int *handle)
 456 {
 457         struct amdgpu_framebuffer *amdgpu_fb = to_amdgpu_framebuffer(fb);
 458
 459         return drm_gem_handle_create(file_priv, amdgpu_fb->obj, handle);
 460 }
 461
 462 static const struct drm_framebuffer_funcs amdgpu_fb_funcs = {
 463         .destroy = amdgpu_user_framebuffer_destroy,
 464         .create_handle = amdgpu_user_framebuffer_create_handle,
 465 };
 466
 467 int
 468 amdgpu_framebuffer_init(struct drm_device *dev,
 469                         struct amdgpu_framebuffer *rfb,
 470                         struct drm_mode_fb_cmd2 *mode_cmd,
 471                         struct drm_gem_object *obj)
 472 {
 473         int ret;
 474         rfb->obj = obj;
 475         drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
 476         ret = drm_framebuffer_init(dev, &rfb->base, &amdgpu_fb_funcs);
 477         if (ret) {
 478                 rfb->obj = NULL;
 479                 return ret;
 480         }
 481         return 0;
 482 }
 483
 484 static struct drm_framebuffer *
 485 amdgpu_user_framebuffer_create(struct drm_device *dev,
 486                                struct drm_file *file_priv,
 487                                struct drm_mode_fb_cmd2 *mode_cmd)
 488 {
 489         struct drm_gem_object *obj;
 490         struct amdgpu_framebuffer *amdgpu_fb;
 491         int ret;
 492
 493         obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
 494         if (obj ==  NULL) {
 495                 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
 496                         "can't create framebuffer\n", mode_cmd->handles[0]);
 497                 return ERR_PTR(-ENOENT);
 498         }
 499
 500         amdgpu_fb = kzalloc(sizeof(*amdgpu_fb), GFP_KERNEL);
 501         if (amdgpu_fb == NULL) {
 502                 drm_gem_object_unreference_unlocked(obj);
 503                 return ERR_PTR(-ENOMEM);
 504         }
 505
 506         ret = amdgpu_framebuffer_init(dev, amdgpu_fb, mode_cmd, obj);
 507         if (ret) {
 508                 kfree(amdgpu_fb);
 509                 drm_gem_object_unreference_unlocked(obj);
 510                 return ERR_PTR(ret);
 511         }
 512
 513         return &amdgpu_fb->base;
 514 }
 515
 516 static void amdgpu_output_poll_changed(struct drm_device *dev)
 517 {
 518         struct amdgpu_device *adev = dev->dev_private;
 519         amdgpu_fb_output_poll_changed(adev);
 520 }
 521
 522 const struct drm_mode_config_funcs amdgpu_mode_funcs = {
 523         .fb_create = amdgpu_user_framebuffer_create,
 524         .output_poll_changed = amdgpu_output_poll_changed
 525 };
 526
 527 static struct drm_prop_enum_list amdgpu_underscan_enum_list[] =
 528 {       { UNDERSCAN_OFF, "off" },
 529         { UNDERSCAN_ON, "on" },
 530         { UNDERSCAN_AUTO, "auto" },
 531 };
 532
 533 static struct drm_prop_enum_list amdgpu_audio_enum_list[] =
 534 {       { AMDGPU_AUDIO_DISABLE, "off" },
 535         { AMDGPU_AUDIO_ENABLE, "on" },
 536         { AMDGPU_AUDIO_AUTO, "auto" },
 537 };
 538
 539 /* XXX support different dither options? spatial, temporal, both, etc. */
 540 static struct drm_prop_enum_list amdgpu_dither_enum_list[] =
 541 {       { AMDGPU_FMT_DITHER_DISABLE, "off" },
 542         { AMDGPU_FMT_DITHER_ENABLE, "on" },
 543 };
 544
 545 int amdgpu_modeset_create_props(struct amdgpu_device *adev)
 546 {
 547         int sz;
 548
 549         if (adev->is_atom_bios) {
 550                 adev->mode_info.coherent_mode_property =
 551                         drm_property_create_range(adev->ddev, 0 , "coherent", 0, 1);
 552                 if (!adev->mode_info.coherent_mode_property)
 553                         return -ENOMEM;
 554         }
 555
 556         adev->mode_info.load_detect_property =
 557                 drm_property_create_range(adev->ddev, 0, "load detection", 0, 1);
 558         if (!adev->mode_info.load_detect_property)
 559                 return -ENOMEM;
 560
 561         drm_mode_create_scaling_mode_property(adev->ddev);
 562
 563         sz = ARRAY_SIZE(amdgpu_underscan_enum_list);
 564         adev->mode_info.underscan_property =
 565                 drm_property_create_enum(adev->ddev, 0,
 566                                     "underscan",
 567                                     amdgpu_underscan_enum_list, sz);
 568
 569         adev->mode_info.underscan_hborder_property =
 570                 drm_property_create_range(adev->ddev, 0,
 571                                         "underscan hborder", 0, 128);
 572         if (!adev->mode_info.underscan_hborder_property)
 573                 return -ENOMEM;
 574
 575         adev->mode_info.underscan_vborder_property =
 576                 drm_property_create_range(adev->ddev, 0,
 577                                         "underscan vborder", 0, 128);
 578         if (!adev->mode_info.underscan_vborder_property)
 579                 return -ENOMEM;
 580
 581         sz = ARRAY_SIZE(amdgpu_audio_enum_list);
 582         adev->mode_info.audio_property =
 583                 drm_property_create_enum(adev->ddev, 0,
 584                                          "audio",
 585                                          amdgpu_audio_enum_list, sz);
 586
 587         sz = ARRAY_SIZE(amdgpu_dither_enum_list);
 588         adev->mode_info.dither_property =
 589                 drm_property_create_enum(adev->ddev, 0,
 590                                          "dither",
 591                                          amdgpu_dither_enum_list, sz);
 592
 593         return 0;
 594 }
 595
 596 void amdgpu_update_display_priority(struct amdgpu_device *adev)
 597 {
 598         /* adjustment options for the display watermarks */
 599         if ((amdgpu_disp_priority == 0) || (amdgpu_disp_priority > 2))
 600                 adev->mode_info.disp_priority = 0;
 601         else
 602                 adev->mode_info.disp_priority = amdgpu_disp_priority;
 603
 604 }
 605
 606 static bool is_hdtv_mode(const struct drm_display_mode *mode)
 607 {
 608         /* try and guess if this is a tv or a monitor */
 609         if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
 610             (mode->vdisplay == 576) || /* 576p */
 611             (mode->vdisplay == 720) || /* 720p */
 612             (mode->vdisplay == 1080)) /* 1080p */
 613                 return true;
 614         else
 615                 return false;
 616 }
 617
 618 bool amdgpu_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
 619                                     const struct drm_display_mode *mode,
 620                                     struct drm_display_mode *adjusted_mode)
 621 {
 622         struct drm_device *dev = crtc->dev;
 623         struct drm_encoder *encoder;
 624         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 625         struct amdgpu_encoder *amdgpu_encoder;
 626         struct drm_connector *connector;
 627         struct amdgpu_connector *amdgpu_connector;
 628         u32 src_v = 1, dst_v = 1;
 629         u32 src_h = 1, dst_h = 1;
 630
 631         amdgpu_crtc->h_border = 0;
 632         amdgpu_crtc->v_border = 0;
 633
 634         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 635                 if (encoder->crtc != crtc)
 636                         continue;
 637                 amdgpu_encoder = to_amdgpu_encoder(encoder);
 638                 connector = amdgpu_get_connector_for_encoder(encoder);
 639                 amdgpu_connector = to_amdgpu_connector(connector);
 640
 641                 /* set scaling */
 642                 if (amdgpu_encoder->rmx_type == RMX_OFF)
 643                         amdgpu_crtc->rmx_type = RMX_OFF;
 644                 else if (mode->hdisplay < amdgpu_encoder->native_mode.hdisplay ||
 645                          mode->vdisplay < amdgpu_encoder->native_mode.vdisplay)
 646                         amdgpu_crtc->rmx_type = amdgpu_encoder->rmx_type;
 647                 else
 648                         amdgpu_crtc->rmx_type = RMX_OFF;
 649                 /* copy native mode */
 650                 memcpy(&amdgpu_crtc->native_mode,
 651                        &amdgpu_encoder->native_mode,
 652                        sizeof(struct drm_display_mode));
 653                 src_v = crtc->mode.vdisplay;
 654                 dst_v = amdgpu_crtc->native_mode.vdisplay;
 655                 src_h = crtc->mode.hdisplay;
 656                 dst_h = amdgpu_crtc->native_mode.hdisplay;
 657
 658                 /* fix up for overscan on hdmi */
 659                 if ((!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
 660                     ((amdgpu_encoder->underscan_type == UNDERSCAN_ON) ||
 661                      ((amdgpu_encoder->underscan_type == UNDERSCAN_AUTO) &&
 662                       drm_detect_hdmi_monitor(amdgpu_connector_edid(connector)) &&
 663                       is_hdtv_mode(mode)))) {
 664                         if (amdgpu_encoder->underscan_hborder != 0)
 665                                 amdgpu_crtc->h_border = amdgpu_encoder->underscan_hborder;
 666                         else
 667                                 amdgpu_crtc->h_border = (mode->hdisplay >> 5) + 16;
 668                         if (amdgpu_encoder->underscan_vborder != 0)
 669                                 amdgpu_crtc->v_border = amdgpu_encoder->underscan_vborder;
 670                         else
 671                                 amdgpu_crtc->v_border = (mode->vdisplay >> 5) + 16;
 672                         amdgpu_crtc->rmx_type = RMX_FULL;
 673                         src_v = crtc->mode.vdisplay;
 674                         dst_v = crtc->mode.vdisplay - (amdgpu_crtc->v_border * 2);
 675                         src_h = crtc->mode.hdisplay;
 676                         dst_h = crtc->mode.hdisplay - (amdgpu_crtc->h_border * 2);
 677                 }
 678         }
 679         if (amdgpu_crtc->rmx_type != RMX_OFF) {
 680                 fixed20_12 a, b;
 681                 a.full = dfixed_const(src_v);
 682                 b.full = dfixed_const(dst_v);
 683                 amdgpu_crtc->vsc.full = dfixed_div(a, b);
 684                 a.full = dfixed_const(src_h);
 685                 b.full = dfixed_const(dst_h);
 686                 amdgpu_crtc->hsc.full = dfixed_div(a, b);
 687         } else {
 688                 amdgpu_crtc->vsc.full = dfixed_const(1);
 689                 amdgpu_crtc->hsc.full = dfixed_const(1);
 690         }
 691         return true;
 692 }
 693
 694 /*
 695  * Retrieve current video scanout position of crtc on a given gpu, and
 696  * an optional accurate timestamp of when query happened.
 697  *
 698  * \param dev Device to query.
 699  * \param crtc Crtc to query.
 700  * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
 701  * \param *vpos Location where vertical scanout position should be stored.
 702  * \param *hpos Location where horizontal scanout position should go.
 703  * \param *stime Target location for timestamp taken immediately before
 704  *               scanout position query. Can be NULL to skip timestamp.
 705  * \param *etime Target location for timestamp taken immediately after
 706  *               scanout position query. Can be NULL to skip timestamp.
 707  *
 708  * Returns vpos as a positive number while in active scanout area.
 709  * Returns vpos as a negative number inside vblank, counting the number
 710  * of scanlines to go until end of vblank, e.g., -1 means "one scanline
 711  * until start of active scanout / end of vblank."
 712  *
 713  * \return Flags, or'ed together as follows:
 714  *
 715  * DRM_SCANOUTPOS_VALID = Query successful.
 716  * DRM_SCANOUTPOS_INVBL = Inside vblank.
 717  * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
 718  * this flag means that returned position may be offset by a constant but
 719  * unknown small number of scanlines wrt. real scanout position.
 720  *
 721  */
 722 int amdgpu_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int flags,
 723                                int *vpos, int *hpos, ktime_t *stime, ktime_t *etime)
 724 {
 725         u32 vbl = 0, position = 0;
 726         int vbl_start, vbl_end, vtotal, ret = 0;
 727         bool in_vbl = true;
 728
 729         struct amdgpu_device *adev = dev->dev_private;
 730
 731         /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
 732
 733         /* Get optional system timestamp before query. */
 734         if (stime)
 735                 *stime = ktime_get();
 736
 737         if (amdgpu_display_page_flip_get_scanoutpos(adev, crtc, &vbl, &position) == 0)
 738                 ret |= DRM_SCANOUTPOS_VALID;
 739
 740         /* Get optional system timestamp after query. */
 741         if (etime)
 742                 *etime = ktime_get();
 743
 744         /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
 745
 746         /* Decode into vertical and horizontal scanout position. */
 747         *vpos = position & 0x1fff;
 748         *hpos = (position >> 16) & 0x1fff;
 749
 750         /* Valid vblank area boundaries from gpu retrieved? */
 751         if (vbl > 0) {
 752                 /* Yes: Decode. */
 753                 ret |= DRM_SCANOUTPOS_ACCURATE;
 754                 vbl_start = vbl & 0x1fff;
 755                 vbl_end = (vbl >> 16) & 0x1fff;
 756         }
 757         else {
 758                 /* No: Fake something reasonable which gives at least ok results. */
 759                 vbl_start = adev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay;
 760                 vbl_end = 0;
 761         }
 762
 763         /* Test scanout position against vblank region. */
 764         if ((*vpos < vbl_start) && (*vpos >= vbl_end))
 765                 in_vbl = false;
 766
 767         /* Check if inside vblank area and apply corrective offsets:
 768          * vpos will then be >=0 in video scanout area, but negative
 769          * within vblank area, counting down the number of lines until
 770          * start of scanout.
 771          */
 772
 773         /* Inside "upper part" of vblank area? Apply corrective offset if so: */
 774         if (in_vbl && (*vpos >= vbl_start)) {
 775                 vtotal = adev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal;
 776                 *vpos = *vpos - vtotal;
 777         }
 778
 779         /* Correct for shifted end of vbl at vbl_end. */
 780         *vpos = *vpos - vbl_end;
 781
 782         /* In vblank? */
 783         if (in_vbl)
 784                 ret |= DRM_SCANOUTPOS_IN_VBLANK;
 785
 786         /* Is vpos outside nominal vblank area, but less than
 787          * 1/100 of a frame height away from start of vblank?
 788          * If so, assume this isn't a massively delayed vblank
 789          * interrupt, but a vblank interrupt that fired a few
 790          * microseconds before true start of vblank. Compensate
 791          * by adding a full frame duration to the final timestamp.
 792          * Happens, e.g., on ATI R500, R600.
 793          *
 794          * We only do this if DRM_CALLED_FROM_VBLIRQ.
 795          */
 796         if ((flags & DRM_CALLED_FROM_VBLIRQ) && !in_vbl) {
 797                 vbl_start = adev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay;
 798                 vtotal = adev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal;
 799
 800                 if (vbl_start - *vpos < vtotal / 100) {
 801                         *vpos -= vtotal;
 802
 803                         /* Signal this correction as "applied". */
 804                         ret |= 0x8;
 805                 }
 806         }
 807
 808         return ret;
 809 }
 810
 811 int amdgpu_crtc_idx_to_irq_type(struct amdgpu_device *adev, int crtc)
 812 {
 813         if (crtc < 0 || crtc >= adev->mode_info.num_crtc)
 814                 return AMDGPU_CRTC_IRQ_NONE;
 815
 816         switch (crtc) {
 817         case 0:
 818                 return AMDGPU_CRTC_IRQ_VBLANK1;
 819         case 1:
 820                 return AMDGPU_CRTC_IRQ_VBLANK2;
 821         case 2:
 822                 return AMDGPU_CRTC_IRQ_VBLANK3;
 823         case 3:
 824                 return AMDGPU_CRTC_IRQ_VBLANK4;
 825         case 4:
 826                 return AMDGPU_CRTC_IRQ_VBLANK5;
 827         case 5:
 828                 return AMDGPU_CRTC_IRQ_VBLANK6;
 829         default:
 830                 return AMDGPU_CRTC_IRQ_NONE;
 831         }
 832 }