drivers/gpu/drm/i915/display/intel_display_debugfs.c

   1 // SPDX-License-Identifier: MIT
   2 /*
   3  * Copyright © 2020 Intel Corporation
   4  */
   5
   6 #include <linux/string_helpers.h>
   7
   8 #include <drm/drm_debugfs.h>
   9 #include <drm/drm_edid.h>
  10 #include <drm/drm_fourcc.h>
  11
  12 #include "hsw_ips.h"
  13 #include "i915_debugfs.h"
  14 #include "i915_irq.h"
  15 #include "i915_reg.h"
  16 #include "intel_crtc.h"
  17 #include "intel_de.h"
  18 #include "intel_crtc_state_dump.h"
  19 #include "intel_display_debugfs.h"
  20 #include "intel_display_debugfs_params.h"
  21 #include "intel_display_power.h"
  22 #include "intel_display_power_well.h"
  23 #include "intel_display_types.h"
  24 #include "intel_dmc.h"
  25 #include "intel_dp.h"
  26 #include "intel_dp_mst.h"
  27 #include "intel_drrs.h"
  28 #include "intel_fbc.h"
  29 #include "intel_fbdev.h"
  30 #include "intel_hdcp.h"
  31 #include "intel_hdmi.h"
  32 #include "intel_hotplug.h"
  33 #include "intel_panel.h"
  34 #include "intel_psr.h"
  35 #include "intel_psr_regs.h"
  36 #include "intel_wm.h"
  37
  38 static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
  39 {
  40         return to_i915(node->minor->dev);
  41 }
  42
  43 static int i915_frontbuffer_tracking(struct seq_file *m, void *unused)
  44 {
  45         struct drm_i915_private *dev_priv = node_to_i915(m->private);
  46
  47         spin_lock(&dev_priv->display.fb_tracking.lock);
  48
  49         seq_printf(m, "FB tracking busy bits: 0x%08x\n",
  50                    dev_priv->display.fb_tracking.busy_bits);
  51
  52         seq_printf(m, "FB tracking flip bits: 0x%08x\n",
  53                    dev_priv->display.fb_tracking.flip_bits);
  54
  55         spin_unlock(&dev_priv->display.fb_tracking.lock);
  56
  57         return 0;
  58 }
  59
  60 static int i915_sr_status(struct seq_file *m, void *unused)
  61 {
  62         struct drm_i915_private *dev_priv = node_to_i915(m->private);
  63         intel_wakeref_t wakeref;
  64         bool sr_enabled = false;
  65
  66         wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
  67
  68         if (DISPLAY_VER(dev_priv) >= 9)
  69                 /* no global SR status; inspect per-plane WM */;
  70         else if (HAS_PCH_SPLIT(dev_priv))
  71                 sr_enabled = intel_de_read(dev_priv, WM1_LP_ILK) & WM_LP_ENABLE;
  72         else if (IS_I965GM(dev_priv) || IS_G4X(dev_priv) ||
  73                  IS_I945G(dev_priv) || IS_I945GM(dev_priv))
  74                 sr_enabled = intel_de_read(dev_priv, FW_BLC_SELF) & FW_BLC_SELF_EN;
  75         else if (IS_I915GM(dev_priv))
  76                 sr_enabled = intel_de_read(dev_priv, INSTPM) & INSTPM_SELF_EN;
  77         else if (IS_PINEVIEW(dev_priv))
  78                 sr_enabled = intel_de_read(dev_priv, DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
  79         else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
  80                 sr_enabled = intel_de_read(dev_priv, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;
  81
  82         intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);
  83
  84         seq_printf(m, "self-refresh: %s\n", str_enabled_disabled(sr_enabled));
  85
  86         return 0;
  87 }
  88
  89 static int i915_opregion(struct seq_file *m, void *unused)
  90 {
  91         struct drm_i915_private *i915 = node_to_i915(m->private);
  92         struct intel_opregion *opregion = &i915->display.opregion;
  93
  94         if (opregion->header)
  95                 seq_write(m, opregion->header, OPREGION_SIZE);
  96
  97         return 0;
  98 }
  99
 100 static int i915_vbt(struct seq_file *m, void *unused)
 101 {
 102         struct drm_i915_private *i915 = node_to_i915(m->private);
 103         struct intel_opregion *opregion = &i915->display.opregion;
 104
 105         if (opregion->vbt)
 106                 seq_write(m, opregion->vbt, opregion->vbt_size);
 107
 108         return 0;
 109 }
 110
 111 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 112 {
 113         struct drm_i915_private *dev_priv = node_to_i915(m->private);
 114         struct intel_framebuffer *fbdev_fb = NULL;
 115         struct drm_framebuffer *drm_fb;
 116
 117 #ifdef CONFIG_DRM_FBDEV_EMULATION
 118         fbdev_fb = intel_fbdev_framebuffer(dev_priv->display.fbdev.fbdev);
 119         if (fbdev_fb) {
 120                 seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
 121                            fbdev_fb->base.width,
 122                            fbdev_fb->base.height,
 123                            fbdev_fb->base.format->depth,
 124                            fbdev_fb->base.format->cpp[0] * 8,
 125                            fbdev_fb->base.modifier,
 126                            drm_framebuffer_read_refcount(&fbdev_fb->base));
 127                 i915_debugfs_describe_obj(m, intel_fb_obj(&fbdev_fb->base));
 128                 seq_putc(m, '\n');
 129         }
 130 #endif
 131
 132         mutex_lock(&dev_priv->drm.mode_config.fb_lock);
 133         drm_for_each_fb(drm_fb, &dev_priv->drm) {
 134                 struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
 135                 if (fb == fbdev_fb)
 136                         continue;
 137
 138                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
 139                            fb->base.width,
 140                            fb->base.height,
 141                            fb->base.format->depth,
 142                            fb->base.format->cpp[0] * 8,
 143                            fb->base.modifier,
 144                            drm_framebuffer_read_refcount(&fb->base));
 145                 i915_debugfs_describe_obj(m, intel_fb_obj(&fb->base));
 146                 seq_putc(m, '\n');
 147         }
 148         mutex_unlock(&dev_priv->drm.mode_config.fb_lock);
 149
 150         return 0;
 151 }
 152
 153 static int i915_power_domain_info(struct seq_file *m, void *unused)
 154 {
 155         struct drm_i915_private *i915 = node_to_i915(m->private);
 156
 157         intel_display_power_debug(i915, m);
 158
 159         return 0;
 160 }
 161
 162 static void intel_seq_print_mode(struct seq_file *m, int tabs,
 163                                  const struct drm_display_mode *mode)
 164 {
 165         int i;
 166
 167         for (i = 0; i < tabs; i++)
 168                 seq_putc(m, '\t');
 169
 170         seq_printf(m, DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
 171 }
 172
 173 static void intel_encoder_info(struct seq_file *m,
 174                                struct intel_crtc *crtc,
 175                                struct intel_encoder *encoder)
 176 {
 177         struct drm_i915_private *dev_priv = node_to_i915(m->private);
 178         struct drm_connector_list_iter conn_iter;
 179         struct drm_connector *connector;
 180
 181         seq_printf(m, "\t[ENCODER:%d:%s]: connectors:\n",
 182                    encoder->base.base.id, encoder->base.name);
 183
 184         drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
 185         drm_for_each_connector_iter(connector, &conn_iter) {
 186                 const struct drm_connector_state *conn_state =
 187                         connector->state;
 188
 189                 if (conn_state->best_encoder != &encoder->base)
 190                         continue;
 191
 192                 seq_printf(m, "\t\t[CONNECTOR:%d:%s]\n",
 193                            connector->base.id, connector->name);
 194         }
 195         drm_connector_list_iter_end(&conn_iter);
 196 }
 197
 198 static void intel_panel_info(struct seq_file *m,
 199                              struct intel_connector *connector)
 200 {
 201         const struct drm_display_mode *fixed_mode;
 202
 203         if (list_empty(&connector->panel.fixed_modes))
 204                 return;
 205
 206         seq_puts(m, "\tfixed modes:\n");
 207
 208         list_for_each_entry(fixed_mode, &connector->panel.fixed_modes, head)
 209                 intel_seq_print_mode(m, 2, fixed_mode);
 210 }
 211
 212 static void intel_hdcp_info(struct seq_file *m,
 213                             struct intel_connector *intel_connector)
 214 {
 215         bool hdcp_cap, hdcp2_cap;
 216
 217         if (!intel_connector->hdcp.shim) {
 218                 seq_puts(m, "No Connector Support");
 219                 goto out;
 220         }
 221
 222         hdcp_cap = intel_hdcp_capable(intel_connector);
 223         hdcp2_cap = intel_hdcp2_capable(intel_connector);
 224
 225         if (hdcp_cap)
 226                 seq_puts(m, "HDCP1.4 ");
 227         if (hdcp2_cap)
 228                 seq_puts(m, "HDCP2.2 ");
 229
 230         if (!hdcp_cap && !hdcp2_cap)
 231                 seq_puts(m, "None");
 232
 233 out:
 234         seq_puts(m, "\n");
 235 }
 236
 237 static void intel_dp_info(struct seq_file *m, struct intel_connector *connector)
 238 {
 239         struct intel_encoder *intel_encoder = intel_attached_encoder(connector);
 240         struct intel_dp *intel_dp = enc_to_intel_dp(intel_encoder);
 241
 242         seq_printf(m, "\tDPCD rev: %x\n", intel_dp->dpcd[DP_DPCD_REV]);
 243         seq_printf(m, "\taudio support: %s\n",
 244                    str_yes_no(connector->base.display_info.has_audio));
 245
 246         drm_dp_downstream_debug(m, intel_dp->dpcd, intel_dp->downstream_ports,
 247                                 connector->detect_edid, &intel_dp->aux);
 248 }
 249
 250 static void intel_dp_mst_info(struct seq_file *m,
 251                               struct intel_connector *connector)
 252 {
 253         bool has_audio = connector->base.display_info.has_audio;
 254
 255         seq_printf(m, "\taudio support: %s\n", str_yes_no(has_audio));
 256 }
 257
 258 static void intel_hdmi_info(struct seq_file *m,
 259                             struct intel_connector *connector)
 260 {
 261         bool has_audio = connector->base.display_info.has_audio;
 262
 263         seq_printf(m, "\taudio support: %s\n", str_yes_no(has_audio));
 264 }
 265
 266 static void intel_connector_info(struct seq_file *m,
 267                                  struct drm_connector *connector)
 268 {
 269         struct intel_connector *intel_connector = to_intel_connector(connector);
 270         const struct drm_connector_state *conn_state = connector->state;
 271         struct intel_encoder *encoder =
 272                 to_intel_encoder(conn_state->best_encoder);
 273         const struct drm_display_mode *mode;
 274
 275         seq_printf(m, "[CONNECTOR:%d:%s]: status: %s\n",
 276                    connector->base.id, connector->name,
 277                    drm_get_connector_status_name(connector->status));
 278
 279         if (connector->status == connector_status_disconnected)
 280                 return;
 281
 282         seq_printf(m, "\tphysical dimensions: %dx%dmm\n",
 283                    connector->display_info.width_mm,
 284                    connector->display_info.height_mm);
 285         seq_printf(m, "\tsubpixel order: %s\n",
 286                    drm_get_subpixel_order_name(connector->display_info.subpixel_order));
 287         seq_printf(m, "\tCEA rev: %d\n", connector->display_info.cea_rev);
 288
 289         if (!encoder)
 290                 return;
 291
 292         switch (connector->connector_type) {
 293         case DRM_MODE_CONNECTOR_DisplayPort:
 294         case DRM_MODE_CONNECTOR_eDP:
 295                 if (encoder->type == INTEL_OUTPUT_DP_MST)
 296                         intel_dp_mst_info(m, intel_connector);
 297                 else
 298                         intel_dp_info(m, intel_connector);
 299                 break;
 300         case DRM_MODE_CONNECTOR_HDMIA:
 301                 if (encoder->type == INTEL_OUTPUT_HDMI ||
 302                     encoder->type == INTEL_OUTPUT_DDI)
 303                         intel_hdmi_info(m, intel_connector);
 304                 break;
 305         default:
 306                 break;
 307         }
 308
 309         seq_puts(m, "\tHDCP version: ");
 310         intel_hdcp_info(m, intel_connector);
 311
 312         seq_printf(m, "\tmax bpc: %u\n", connector->display_info.bpc);
 313
 314         intel_panel_info(m, intel_connector);
 315
 316         seq_printf(m, "\tmodes:\n");
 317         list_for_each_entry(mode, &connector->modes, head)
 318                 intel_seq_print_mode(m, 2, mode);
 319 }
 320
 321 static const char *plane_type(enum drm_plane_type type)
 322 {
 323         switch (type) {
 324         case DRM_PLANE_TYPE_OVERLAY:
 325                 return "OVL";
 326         case DRM_PLANE_TYPE_PRIMARY:
 327                 return "PRI";
 328         case DRM_PLANE_TYPE_CURSOR:
 329                 return "CUR";
 330         /*
 331          * Deliberately omitting default: to generate compiler warnings
 332          * when a new drm_plane_type gets added.
 333          */
 334         }
 335
 336         return "unknown";
 337 }
 338
 339 static void plane_rotation(char *buf, size_t bufsize, unsigned int rotation)
 340 {
 341         /*
 342          * According to doc only one DRM_MODE_ROTATE_ is allowed but this
 343          * will print them all to visualize if the values are misused
 344          */
 345         snprintf(buf, bufsize,
 346                  "%s%s%s%s%s%s(0x%08x)",
 347                  (rotation & DRM_MODE_ROTATE_0) ? "0 " : "",
 348                  (rotation & DRM_MODE_ROTATE_90) ? "90 " : "",
 349                  (rotation & DRM_MODE_ROTATE_180) ? "180 " : "",
 350                  (rotation & DRM_MODE_ROTATE_270) ? "270 " : "",
 351                  (rotation & DRM_MODE_REFLECT_X) ? "FLIPX " : "",
 352                  (rotation & DRM_MODE_REFLECT_Y) ? "FLIPY " : "",
 353                  rotation);
 354 }
 355
 356 static const char *plane_visibility(const struct intel_plane_state *plane_state)
 357 {
 358         if (plane_state->uapi.visible)
 359                 return "visible";
 360
 361         if (plane_state->planar_slave)
 362                 return "planar-slave";
 363
 364         return "hidden";
 365 }
 366
 367 static void intel_plane_uapi_info(struct seq_file *m, struct intel_plane *plane)
 368 {
 369         const struct intel_plane_state *plane_state =
 370                 to_intel_plane_state(plane->base.state);
 371         const struct drm_framebuffer *fb = plane_state->uapi.fb;
 372         struct drm_rect src, dst;
 373         char rot_str[48];
 374
 375         src = drm_plane_state_src(&plane_state->uapi);
 376         dst = drm_plane_state_dest(&plane_state->uapi);
 377
 378         plane_rotation(rot_str, sizeof(rot_str),
 379                        plane_state->uapi.rotation);
 380
 381         seq_puts(m, "\t\tuapi: [FB:");
 382         if (fb)
 383                 seq_printf(m, "%d] %p4cc,0x%llx,%dx%d", fb->base.id,
 384                            &fb->format->format, fb->modifier, fb->width,
 385                            fb->height);
 386         else
 387                 seq_puts(m, "0] n/a,0x0,0x0,");
 388         seq_printf(m, ", visible=%s, src=" DRM_RECT_FP_FMT ", dst=" DRM_RECT_FMT
 389                    ", rotation=%s\n", plane_visibility(plane_state),
 390                    DRM_RECT_FP_ARG(&src), DRM_RECT_ARG(&dst), rot_str);
 391
 392         if (plane_state->planar_linked_plane)
 393                 seq_printf(m, "\t\tplanar: Linked to [PLANE:%d:%s] as a %s\n",
 394                            plane_state->planar_linked_plane->base.base.id, plane_state->planar_linked_plane->base.name,
 395                            plane_state->planar_slave ? "slave" : "master");
 396 }
 397
 398 static void intel_plane_hw_info(struct seq_file *m, struct intel_plane *plane)
 399 {
 400         const struct intel_plane_state *plane_state =
 401                 to_intel_plane_state(plane->base.state);
 402         const struct drm_framebuffer *fb = plane_state->hw.fb;
 403         char rot_str[48];
 404
 405         if (!fb)
 406                 return;
 407
 408         plane_rotation(rot_str, sizeof(rot_str),
 409                        plane_state->hw.rotation);
 410
 411         seq_printf(m, "\t\thw: [FB:%d] %p4cc,0x%llx,%dx%d, visible=%s, src="
 412                    DRM_RECT_FP_FMT ", dst=" DRM_RECT_FMT ", rotation=%s\n",
 413                    fb->base.id, &fb->format->format,
 414                    fb->modifier, fb->width, fb->height,
 415                    str_yes_no(plane_state->uapi.visible),
 416                    DRM_RECT_FP_ARG(&plane_state->uapi.src),
 417                    DRM_RECT_ARG(&plane_state->uapi.dst),
 418                    rot_str);
 419 }
 420
 421 static void intel_plane_info(struct seq_file *m, struct intel_crtc *crtc)
 422 {
 423         struct drm_i915_private *dev_priv = node_to_i915(m->private);
 424         struct intel_plane *plane;
 425
 426         for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
 427                 seq_printf(m, "\t[PLANE:%d:%s]: type=%s\n",
 428                            plane->base.base.id, plane->base.name,
 429                            plane_type(plane->base.type));
 430                 intel_plane_uapi_info(m, plane);
 431                 intel_plane_hw_info(m, plane);
 432         }
 433 }
 434
 435 static void intel_scaler_info(struct seq_file *m, struct intel_crtc *crtc)
 436 {
 437         const struct intel_crtc_state *crtc_state =
 438                 to_intel_crtc_state(crtc->base.state);
 439         int num_scalers = crtc->num_scalers;
 440         int i;
 441
 442         /* Not all platformas have a scaler */
 443         if (num_scalers) {
 444                 seq_printf(m, "\tnum_scalers=%d, scaler_users=%x scaler_id=%d scaling_filter=%d",
 445                            num_scalers,
 446                            crtc_state->scaler_state.scaler_users,
 447                            crtc_state->scaler_state.scaler_id,
 448                            crtc_state->hw.scaling_filter);
 449
 450                 for (i = 0; i < num_scalers; i++) {
 451                         const struct intel_scaler *sc =
 452                                 &crtc_state->scaler_state.scalers[i];
 453
 454                         seq_printf(m, ", scalers[%d]: use=%s, mode=%x",
 455                                    i, str_yes_no(sc->in_use), sc->mode);
 456                 }
 457                 seq_puts(m, "\n");
 458         } else {
 459                 seq_puts(m, "\tNo scalers available on this platform\n");
 460         }
 461 }
 462
 463 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_VBLANK_EVADE)
 464 static void crtc_updates_info(struct seq_file *m,
 465                               struct intel_crtc *crtc,
 466                               const char *hdr)
 467 {
 468         u64 count;
 469         int row;
 470
 471         count = 0;
 472         for (row = 0; row < ARRAY_SIZE(crtc->debug.vbl.times); row++)
 473                 count += crtc->debug.vbl.times[row];
 474         seq_printf(m, "%sUpdates: %llu\n", hdr, count);
 475         if (!count)
 476                 return;
 477
 478         for (row = 0; row < ARRAY_SIZE(crtc->debug.vbl.times); row++) {
 479                 char columns[80] = "       |";
 480                 unsigned int x;
 481
 482                 if (row & 1) {
 483                         const char *units;
 484
 485                         if (row > 10) {
 486                                 x = 1000000;
 487                                 units = "ms";
 488                         } else {
 489                                 x = 1000;
 490                                 units = "us";
 491                         }
 492
 493                         snprintf(columns, sizeof(columns), "%4ld%s |",
 494                                  DIV_ROUND_CLOSEST(BIT(row + 9), x), units);
 495                 }
 496
 497                 if (crtc->debug.vbl.times[row]) {
 498                         x = ilog2(crtc->debug.vbl.times[row]);
 499                         memset(columns + 8, '*', x);
 500                         columns[8 + x] = '\0';
 501                 }
 502
 503                 seq_printf(m, "%s%s\n", hdr, columns);
 504         }
 505
 506         seq_printf(m, "%sMin update: %lluns\n",
 507                    hdr, crtc->debug.vbl.min);
 508         seq_printf(m, "%sMax update: %lluns\n",
 509                    hdr, crtc->debug.vbl.max);
 510         seq_printf(m, "%sAverage update: %lluns\n",
 511                    hdr, div64_u64(crtc->debug.vbl.sum,  count));
 512         seq_printf(m, "%sOverruns > %uus: %u\n",
 513                    hdr, VBLANK_EVASION_TIME_US, crtc->debug.vbl.over);
 514 }
 515
 516 static int crtc_updates_show(struct seq_file *m, void *data)
 517 {
 518         crtc_updates_info(m, m->private, "");
 519         return 0;
 520 }
 521
 522 static int crtc_updates_open(struct inode *inode, struct file *file)
 523 {
 524         return single_open(file, crtc_updates_show, inode->i_private);
 525 }
 526
 527 static ssize_t crtc_updates_write(struct file *file,
 528                                   const char __user *ubuf,
 529                                   size_t len, loff_t *offp)
 530 {
 531         struct seq_file *m = file->private_data;
 532         struct intel_crtc *crtc = m->private;
 533
 534         /* May race with an update. Meh. */
 535         memset(&crtc->debug.vbl, 0, sizeof(crtc->debug.vbl));
 536
 537         return len;
 538 }
 539
 540 static const struct file_operations crtc_updates_fops = {
 541         .owner = THIS_MODULE,
 542         .open = crtc_updates_open,
 543         .read = seq_read,
 544         .llseek = seq_lseek,
 545         .release = single_release,
 546         .write = crtc_updates_write
 547 };
 548
 549 static void crtc_updates_add(struct intel_crtc *crtc)
 550 {
 551         debugfs_create_file("i915_update_info", 0644, crtc->base.debugfs_entry,
 552                             crtc, &crtc_updates_fops);
 553 }
 554
 555 #else
 556 static void crtc_updates_info(struct seq_file *m,
 557                               struct intel_crtc *crtc,
 558                               const char *hdr)
 559 {
 560 }
 561
 562 static void crtc_updates_add(struct intel_crtc *crtc)
 563 {
 564 }
 565 #endif
 566
 567 static void intel_crtc_info(struct seq_file *m, struct intel_crtc *crtc)
 568 {
 569         struct drm_i915_private *dev_priv = node_to_i915(m->private);
 570         const struct intel_crtc_state *crtc_state =
 571                 to_intel_crtc_state(crtc->base.state);
 572         struct intel_encoder *encoder;
 573
 574         seq_printf(m, "[CRTC:%d:%s]:\n",
 575                    crtc->base.base.id, crtc->base.name);
 576
 577         seq_printf(m, "\tuapi: enable=%s, active=%s, mode=" DRM_MODE_FMT "\n",
 578                    str_yes_no(crtc_state->uapi.enable),
 579                    str_yes_no(crtc_state->uapi.active),
 580                    DRM_MODE_ARG(&crtc_state->uapi.mode));
 581
 582         seq_printf(m, "\thw: enable=%s, active=%s\n",
 583                    str_yes_no(crtc_state->hw.enable), str_yes_no(crtc_state->hw.active));
 584         seq_printf(m, "\tadjusted_mode=" DRM_MODE_FMT "\n",
 585                    DRM_MODE_ARG(&crtc_state->hw.adjusted_mode));
 586         seq_printf(m, "\tpipe__mode=" DRM_MODE_FMT "\n",
 587                    DRM_MODE_ARG(&crtc_state->hw.pipe_mode));
 588
 589         seq_printf(m, "\tpipe src=" DRM_RECT_FMT ", dither=%s, bpp=%d\n",
 590                    DRM_RECT_ARG(&crtc_state->pipe_src),
 591                    str_yes_no(crtc_state->dither), crtc_state->pipe_bpp);
 592
 593         intel_scaler_info(m, crtc);
 594
 595         if (crtc_state->bigjoiner_pipes)
 596                 seq_printf(m, "\tLinked to 0x%x pipes as a %s\n",
 597                            crtc_state->bigjoiner_pipes,
 598                            intel_crtc_is_bigjoiner_slave(crtc_state) ? "slave" : "master");
 599
 600         for_each_intel_encoder_mask(&dev_priv->drm, encoder,
 601                                     crtc_state->uapi.encoder_mask)
 602                 intel_encoder_info(m, crtc, encoder);
 603
 604         intel_plane_info(m, crtc);
 605
 606         seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s\n",
 607                    str_yes_no(!crtc->cpu_fifo_underrun_disabled),
 608                    str_yes_no(!crtc->pch_fifo_underrun_disabled));
 609
 610         crtc_updates_info(m, crtc, "\t");
 611 }
 612
 613 static int i915_display_info(struct seq_file *m, void *unused)
 614 {
 615         struct drm_i915_private *dev_priv = node_to_i915(m->private);
 616         struct intel_crtc *crtc;
 617         struct drm_connector *connector;
 618         struct drm_connector_list_iter conn_iter;
 619         intel_wakeref_t wakeref;
 620
 621         wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
 622
 623         drm_modeset_lock_all(&dev_priv->drm);
 624
 625         seq_printf(m, "CRTC info\n");
 626         seq_printf(m, "---------\n");
 627         for_each_intel_crtc(&dev_priv->drm, crtc)
 628                 intel_crtc_info(m, crtc);
 629
 630         seq_printf(m, "\n");
 631         seq_printf(m, "Connector info\n");
 632         seq_printf(m, "--------------\n");
 633         drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
 634         drm_for_each_connector_iter(connector, &conn_iter)
 635                 intel_connector_info(m, connector);
 636         drm_connector_list_iter_end(&conn_iter);
 637
 638         drm_modeset_unlock_all(&dev_priv->drm);
 639
 640         intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
 641
 642         return 0;
 643 }
 644
 645 static int i915_display_capabilities(struct seq_file *m, void *unused)
 646 {
 647         struct drm_i915_private *i915 = node_to_i915(m->private);
 648         struct drm_printer p = drm_seq_file_printer(m);
 649
 650         intel_display_device_info_print(DISPLAY_INFO(i915),
 651                                         DISPLAY_RUNTIME_INFO(i915), &p);
 652
 653         return 0;
 654 }
 655
 656 static int i915_shared_dplls_info(struct seq_file *m, void *unused)
 657 {
 658         struct drm_i915_private *dev_priv = node_to_i915(m->private);
 659         struct intel_shared_dpll *pll;
 660         int i;
 661
 662         drm_modeset_lock_all(&dev_priv->drm);
 663
 664         seq_printf(m, "PLL refclks: non-SSC: %d kHz, SSC: %d kHz\n",
 665                    dev_priv->display.dpll.ref_clks.nssc,
 666                    dev_priv->display.dpll.ref_clks.ssc);
 667
 668         for_each_shared_dpll(dev_priv, pll, i) {
 669                 seq_printf(m, "DPLL%i: %s, id: %i\n", pll->index,
 670                            pll->info->name, pll->info->id);
 671                 seq_printf(m, " pipe_mask: 0x%x, active: 0x%x, on: %s\n",
 672                            pll->state.pipe_mask, pll->active_mask,
 673                            str_yes_no(pll->on));
 674                 seq_printf(m, " tracked hardware state:\n");
 675                 seq_printf(m, " dpll:    0x%08x\n", pll->state.hw_state.dpll);
 676                 seq_printf(m, " dpll_md: 0x%08x\n",
 677                            pll->state.hw_state.dpll_md);
 678                 seq_printf(m, " fp0:     0x%08x\n", pll->state.hw_state.fp0);
 679                 seq_printf(m, " fp1:     0x%08x\n", pll->state.hw_state.fp1);
 680                 seq_printf(m, " wrpll:   0x%08x\n", pll->state.hw_state.wrpll);
 681                 seq_printf(m, " cfgcr0:  0x%08x\n", pll->state.hw_state.cfgcr0);
 682                 seq_printf(m, " cfgcr1:  0x%08x\n", pll->state.hw_state.cfgcr1);
 683                 seq_printf(m, " div0:    0x%08x\n", pll->state.hw_state.div0);
 684                 seq_printf(m, " mg_refclkin_ctl:        0x%08x\n",
 685                            pll->state.hw_state.mg_refclkin_ctl);
 686                 seq_printf(m, " mg_clktop2_coreclkctl1: 0x%08x\n",
 687                            pll->state.hw_state.mg_clktop2_coreclkctl1);
 688                 seq_printf(m, " mg_clktop2_hsclkctl:    0x%08x\n",
 689                            pll->state.hw_state.mg_clktop2_hsclkctl);
 690                 seq_printf(m, " mg_pll_div0:  0x%08x\n",
 691                            pll->state.hw_state.mg_pll_div0);
 692                 seq_printf(m, " mg_pll_div1:  0x%08x\n",
 693                            pll->state.hw_state.mg_pll_div1);
 694                 seq_printf(m, " mg_pll_lf:    0x%08x\n",
 695                            pll->state.hw_state.mg_pll_lf);
 696                 seq_printf(m, " mg_pll_frac_lock: 0x%08x\n",
 697                            pll->state.hw_state.mg_pll_frac_lock);
 698                 seq_printf(m, " mg_pll_ssc:   0x%08x\n",
 699                            pll->state.hw_state.mg_pll_ssc);
 700                 seq_printf(m, " mg_pll_bias:  0x%08x\n",
 701                            pll->state.hw_state.mg_pll_bias);
 702                 seq_printf(m, " mg_pll_tdc_coldst_bias: 0x%08x\n",
 703                            pll->state.hw_state.mg_pll_tdc_coldst_bias);
 704         }
 705         drm_modeset_unlock_all(&dev_priv->drm);
 706
 707         return 0;
 708 }
 709
 710 static int i915_ddb_info(struct seq_file *m, void *unused)
 711 {
 712         struct drm_i915_private *dev_priv = node_to_i915(m->private);
 713         struct skl_ddb_entry *entry;
 714         struct intel_crtc *crtc;
 715
 716         if (DISPLAY_VER(dev_priv) < 9)
 717                 return -ENODEV;
 718
 719         drm_modeset_lock_all(&dev_priv->drm);
 720
 721         seq_printf(m, "%-15s%8s%8s%8s\n", "", "Start", "End", "Size");
 722
 723         for_each_intel_crtc(&dev_priv->drm, crtc) {
 724                 struct intel_crtc_state *crtc_state =
 725                         to_intel_crtc_state(crtc->base.state);
 726                 enum pipe pipe = crtc->pipe;
 727                 enum plane_id plane_id;
 728
 729                 seq_printf(m, "Pipe %c\n", pipe_name(pipe));
 730
 731                 for_each_plane_id_on_crtc(crtc, plane_id) {
 732                         entry = &crtc_state->wm.skl.plane_ddb[plane_id];
 733                         seq_printf(m, "  Plane%-8d%8u%8u%8u\n", plane_id + 1,
 734                                    entry->start, entry->end,
 735                                    skl_ddb_entry_size(entry));
 736                 }
 737
 738                 entry = &crtc_state->wm.skl.plane_ddb[PLANE_CURSOR];
 739                 seq_printf(m, "  %-13s%8u%8u%8u\n", "Cursor", entry->start,
 740                            entry->end, skl_ddb_entry_size(entry));
 741         }
 742
 743         drm_modeset_unlock_all(&dev_priv->drm);
 744
 745         return 0;
 746 }
 747
 748 static bool
 749 intel_lpsp_power_well_enabled(struct drm_i915_private *i915,
 750                               enum i915_power_well_id power_well_id)
 751 {
 752         intel_wakeref_t wakeref;
 753         bool is_enabled;
 754
 755         wakeref = intel_runtime_pm_get(&i915->runtime_pm);
 756         is_enabled = intel_display_power_well_is_enabled(i915,
 757                                                          power_well_id);
 758         intel_runtime_pm_put(&i915->runtime_pm, wakeref);
 759
 760         return is_enabled;
 761 }
 762
 763 static int i915_lpsp_status(struct seq_file *m, void *unused)
 764 {
 765         struct drm_i915_private *i915 = node_to_i915(m->private);
 766         bool lpsp_enabled = false;
 767
 768         if (DISPLAY_VER(i915) >= 13 || IS_DISPLAY_VER(i915, 9, 10)) {
 769                 lpsp_enabled = !intel_lpsp_power_well_enabled(i915, SKL_DISP_PW_2);
 770         } else if (IS_DISPLAY_VER(i915, 11, 12)) {
 771                 lpsp_enabled = !intel_lpsp_power_well_enabled(i915, ICL_DISP_PW_3);
 772         } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
 773                 lpsp_enabled = !intel_lpsp_power_well_enabled(i915, HSW_DISP_PW_GLOBAL);
 774         } else {
 775                 seq_puts(m, "LPSP: not supported\n");
 776                 return 0;
 777         }
 778
 779         seq_printf(m, "LPSP: %s\n", str_enabled_disabled(lpsp_enabled));
 780
 781         return 0;
 782 }
 783
 784 static int i915_dp_mst_info(struct seq_file *m, void *unused)
 785 {
 786         struct drm_i915_private *dev_priv = node_to_i915(m->private);
 787         struct intel_encoder *intel_encoder;
 788         struct intel_digital_port *dig_port;
 789         struct drm_connector *connector;
 790         struct drm_connector_list_iter conn_iter;
 791
 792         drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
 793         drm_for_each_connector_iter(connector, &conn_iter) {
 794                 if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
 795                         continue;
 796
 797                 intel_encoder = intel_attached_encoder(to_intel_connector(connector));
 798                 if (!intel_encoder || intel_encoder->type == INTEL_OUTPUT_DP_MST)
 799                         continue;
 800
 801                 dig_port = enc_to_dig_port(intel_encoder);
 802                 if (!intel_dp_mst_source_support(&dig_port->dp))
 803                         continue;
 804
 805                 seq_printf(m, "MST Source Port [ENCODER:%d:%s]\n",
 806                            dig_port->base.base.base.id,
 807                            dig_port->base.base.name);
 808                 drm_dp_mst_dump_topology(m, &dig_port->dp.mst_mgr);
 809         }
 810         drm_connector_list_iter_end(&conn_iter);
 811
 812         return 0;
 813 }
 814
 815 static ssize_t i915_displayport_test_active_write(struct file *file,
 816                                                   const char __user *ubuf,
 817                                                   size_t len, loff_t *offp)
 818 {
 819         char *input_buffer;
 820         int status = 0;
 821         struct drm_device *dev;
 822         struct drm_connector *connector;
 823         struct drm_connector_list_iter conn_iter;
 824         struct intel_dp *intel_dp;
 825         int val = 0;
 826
 827         dev = ((struct seq_file *)file->private_data)->private;
 828
 829         if (len == 0)
 830                 return 0;
 831
 832         input_buffer = memdup_user_nul(ubuf, len);
 833         if (IS_ERR(input_buffer))
 834                 return PTR_ERR(input_buffer);
 835
 836         drm_dbg(dev, "Copied %d bytes from user\n", (unsigned int)len);
 837
 838         drm_connector_list_iter_begin(dev, &conn_iter);
 839         drm_for_each_connector_iter(connector, &conn_iter) {
 840                 struct intel_encoder *encoder;
 841
 842                 if (connector->connector_type !=
 843                     DRM_MODE_CONNECTOR_DisplayPort)
 844                         continue;
 845
 846                 encoder = to_intel_encoder(connector->encoder);
 847                 if (encoder && encoder->type == INTEL_OUTPUT_DP_MST)
 848                         continue;
 849
 850                 if (encoder && connector->status == connector_status_connected) {
 851                         intel_dp = enc_to_intel_dp(encoder);
 852                         status = kstrtoint(input_buffer, 10, &val);
 853                         if (status < 0)
 854                                 break;
 855                         drm_dbg(dev, "Got %d for test active\n", val);
 856                         /* To prevent erroneous activation of the compliance
 857                          * testing code, only accept an actual value of 1 here
 858                          */
 859                         if (val == 1)
 860                                 intel_dp->compliance.test_active = true;
 861                         else
 862                                 intel_dp->compliance.test_active = false;
 863                 }
 864         }
 865         drm_connector_list_iter_end(&conn_iter);
 866         kfree(input_buffer);
 867         if (status < 0)
 868                 return status;
 869
 870         *offp += len;
 871         return len;
 872 }
 873
 874 static int i915_displayport_test_active_show(struct seq_file *m, void *data)
 875 {
 876         struct drm_i915_private *dev_priv = m->private;
 877         struct drm_connector *connector;
 878         struct drm_connector_list_iter conn_iter;
 879         struct intel_dp *intel_dp;
 880
 881         drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
 882         drm_for_each_connector_iter(connector, &conn_iter) {
 883                 struct intel_encoder *encoder;
 884
 885                 if (connector->connector_type !=
 886                     DRM_MODE_CONNECTOR_DisplayPort)
 887                         continue;
 888
 889                 encoder = to_intel_encoder(connector->encoder);
 890                 if (encoder && encoder->type == INTEL_OUTPUT_DP_MST)
 891                         continue;
 892
 893                 if (encoder && connector->status == connector_status_connected) {
 894                         intel_dp = enc_to_intel_dp(encoder);
 895                         if (intel_dp->compliance.test_active)
 896                                 seq_puts(m, "1");
 897                         else
 898                                 seq_puts(m, "0");
 899                 } else
 900                         seq_puts(m, "0");
 901         }
 902         drm_connector_list_iter_end(&conn_iter);
 903
 904         return 0;
 905 }
 906
 907 static int i915_displayport_test_active_open(struct inode *inode,
 908                                              struct file *file)
 909 {
 910         return single_open(file, i915_displayport_test_active_show,
 911                            inode->i_private);
 912 }
 913
 914 static const struct file_operations i915_displayport_test_active_fops = {
 915         .owner = THIS_MODULE,
 916         .open = i915_displayport_test_active_open,
 917         .read = seq_read,
 918         .llseek = seq_lseek,
 919         .release = single_release,
 920         .write = i915_displayport_test_active_write
 921 };
 922
 923 static int i915_displayport_test_data_show(struct seq_file *m, void *data)
 924 {
 925         struct drm_i915_private *dev_priv = m->private;
 926         struct drm_connector *connector;
 927         struct drm_connector_list_iter conn_iter;
 928         struct intel_dp *intel_dp;
 929
 930         drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
 931         drm_for_each_connector_iter(connector, &conn_iter) {
 932                 struct intel_encoder *encoder;
 933
 934                 if (connector->connector_type !=
 935                     DRM_MODE_CONNECTOR_DisplayPort)
 936                         continue;
 937
 938                 encoder = to_intel_encoder(connector->encoder);
 939                 if (encoder && encoder->type == INTEL_OUTPUT_DP_MST)
 940                         continue;
 941
 942                 if (encoder && connector->status == connector_status_connected) {
 943                         intel_dp = enc_to_intel_dp(encoder);
 944                         if (intel_dp->compliance.test_type ==
 945                             DP_TEST_LINK_EDID_READ)
 946                                 seq_printf(m, "%lx",
 947                                            intel_dp->compliance.test_data.edid);
 948                         else if (intel_dp->compliance.test_type ==
 949                                  DP_TEST_LINK_VIDEO_PATTERN) {
 950                                 seq_printf(m, "hdisplay: %d\n",
 951                                            intel_dp->compliance.test_data.hdisplay);
 952                                 seq_printf(m, "vdisplay: %d\n",
 953                                            intel_dp->compliance.test_data.vdisplay);
 954                                 seq_printf(m, "bpc: %u\n",
 955                                            intel_dp->compliance.test_data.bpc);
 956                         } else if (intel_dp->compliance.test_type ==
 957                                    DP_TEST_LINK_PHY_TEST_PATTERN) {
 958                                 seq_printf(m, "pattern: %d\n",
 959                                            intel_dp->compliance.test_data.phytest.phy_pattern);
 960                                 seq_printf(m, "Number of lanes: %d\n",
 961                                            intel_dp->compliance.test_data.phytest.num_lanes);
 962                                 seq_printf(m, "Link Rate: %d\n",
 963                                            intel_dp->compliance.test_data.phytest.link_rate);
 964                                 seq_printf(m, "level: %02x\n",
 965                                            intel_dp->train_set[0]);
 966                         }
 967                 } else
 968                         seq_puts(m, "0");
 969         }
 970         drm_connector_list_iter_end(&conn_iter);
 971
 972         return 0;
 973 }
 974 DEFINE_SHOW_ATTRIBUTE(i915_displayport_test_data);
 975
 976 static int i915_displayport_test_type_show(struct seq_file *m, void *data)
 977 {
 978         struct drm_i915_private *dev_priv = m->private;
 979         struct drm_connector *connector;
 980         struct drm_connector_list_iter conn_iter;
 981         struct intel_dp *intel_dp;
 982
 983         drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
 984         drm_for_each_connector_iter(connector, &conn_iter) {
 985                 struct intel_encoder *encoder;
 986
 987                 if (connector->connector_type !=
 988                     DRM_MODE_CONNECTOR_DisplayPort)
 989                         continue;
 990
 991                 encoder = to_intel_encoder(connector->encoder);
 992                 if (encoder && encoder->type == INTEL_OUTPUT_DP_MST)
 993                         continue;
 994
 995                 if (encoder && connector->status == connector_status_connected) {
 996                         intel_dp = enc_to_intel_dp(encoder);
 997                         seq_printf(m, "%02lx\n", intel_dp->compliance.test_type);
 998                 } else
 999                         seq_puts(m, "0");
1000         }
1001         drm_connector_list_iter_end(&conn_iter);
1002
1003         return 0;
1004 }
1005 DEFINE_SHOW_ATTRIBUTE(i915_displayport_test_type);
1006
1007 static ssize_t
1008 i915_fifo_underrun_reset_write(struct file *filp,
1009                                const char __user *ubuf,
1010                                size_t cnt, loff_t *ppos)
1011 {
1012         struct drm_i915_private *dev_priv = filp->private_data;
1013         struct intel_crtc *crtc;
1014         int ret;
1015         bool reset;
1016
1017         ret = kstrtobool_from_user(ubuf, cnt, &reset);
1018         if (ret)
1019                 return ret;
1020
1021         if (!reset)
1022                 return cnt;
1023
1024         for_each_intel_crtc(&dev_priv->drm, crtc) {
1025                 struct drm_crtc_commit *commit;
1026                 struct intel_crtc_state *crtc_state;
1027
1028                 ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
1029                 if (ret)
1030                         return ret;
1031
1032                 crtc_state = to_intel_crtc_state(crtc->base.state);
1033                 commit = crtc_state->uapi.commit;
1034                 if (commit) {
1035                         ret = wait_for_completion_interruptible(&commit->hw_done);
1036                         if (!ret)
1037                                 ret = wait_for_completion_interruptible(&commit->flip_done);
1038                 }
1039
1040                 if (!ret && crtc_state->hw.active) {
1041                         drm_dbg_kms(&dev_priv->drm,
1042                                     "Re-arming FIFO underruns on pipe %c\n",
1043                                     pipe_name(crtc->pipe));
1044
1045                         intel_crtc_arm_fifo_underrun(crtc, crtc_state);
1046                 }
1047
1048                 drm_modeset_unlock(&crtc->base.mutex);
1049
1050                 if (ret)
1051                         return ret;
1052         }
1053
1054         intel_fbc_reset_underrun(dev_priv);
1055
1056         return cnt;
1057 }
1058
1059 static const struct file_operations i915_fifo_underrun_reset_ops = {
1060         .owner = THIS_MODULE,
1061         .open = simple_open,
1062         .write = i915_fifo_underrun_reset_write,
1063         .llseek = default_llseek,
1064 };
1065
1066 static const struct drm_info_list intel_display_debugfs_list[] = {
1067         {"i915_frontbuffer_tracking", i915_frontbuffer_tracking, 0},
1068         {"i915_sr_status", i915_sr_status, 0},
1069         {"i915_opregion", i915_opregion, 0},
1070         {"i915_vbt", i915_vbt, 0},
1071         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1072         {"i915_power_domain_info", i915_power_domain_info, 0},
1073         {"i915_display_info", i915_display_info, 0},
1074         {"i915_display_capabilities", i915_display_capabilities, 0},
1075         {"i915_shared_dplls_info", i915_shared_dplls_info, 0},
1076         {"i915_dp_mst_info", i915_dp_mst_info, 0},
1077         {"i915_ddb_info", i915_ddb_info, 0},
1078         {"i915_lpsp_status", i915_lpsp_status, 0},
1079 };
1080
1081 static const struct {
1082         const char *name;
1083         const struct file_operations *fops;
1084 } intel_display_debugfs_files[] = {
1085         {"i915_fifo_underrun_reset", &i915_fifo_underrun_reset_ops},
1086         {"i915_dp_test_data", &i915_displayport_test_data_fops},
1087         {"i915_dp_test_type", &i915_displayport_test_type_fops},
1088         {"i915_dp_test_active", &i915_displayport_test_active_fops},
1089 };
1090
1091 void intel_display_debugfs_register(struct drm_i915_private *i915)
1092 {
1093         struct drm_minor *minor = i915->drm.primary;
1094         int i;
1095
1096         for (i = 0; i < ARRAY_SIZE(intel_display_debugfs_files); i++) {
1097                 debugfs_create_file(intel_display_debugfs_files[i].name,
1098                                     0644,
1099                                     minor->debugfs_root,
1100                                     to_i915(minor->dev),
1101                                     intel_display_debugfs_files[i].fops);
1102         }
1103
1104         drm_debugfs_create_files(intel_display_debugfs_list,
1105                                  ARRAY_SIZE(intel_display_debugfs_list),
1106                                  minor->debugfs_root, minor);
1107
1108         intel_cdclk_debugfs_register(i915);
1109         intel_dmc_debugfs_register(i915);
1110         intel_fbc_debugfs_register(i915);
1111         intel_hpd_debugfs_register(i915);
1112         intel_psr_debugfs_register(i915);
1113         intel_wm_debugfs_register(i915);
1114         intel_display_debugfs_params(i915);
1115 }
1116
1117 static int i915_panel_show(struct seq_file *m, void *data)
1118 {
1119         struct intel_connector *connector = m->private;
1120         struct intel_dp *intel_dp = intel_attached_dp(connector);
1121
1122         if (connector->base.status != connector_status_connected)
1123                 return -ENODEV;
1124
1125         seq_printf(m, "Panel power up delay: %d\n",
1126                    intel_dp->pps.panel_power_up_delay);
1127         seq_printf(m, "Panel power down delay: %d\n",
1128                    intel_dp->pps.panel_power_down_delay);
1129         seq_printf(m, "Backlight on delay: %d\n",
1130                    intel_dp->pps.backlight_on_delay);
1131         seq_printf(m, "Backlight off delay: %d\n",
1132                    intel_dp->pps.backlight_off_delay);
1133
1134         return 0;
1135 }
1136 DEFINE_SHOW_ATTRIBUTE(i915_panel);
1137
1138 static int i915_hdcp_sink_capability_show(struct seq_file *m, void *data)
1139 {
1140         struct intel_connector *connector = m->private;
1141         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1142         int ret;
1143
1144         ret = drm_modeset_lock_single_interruptible(&i915->drm.mode_config.connection_mutex);
1145         if (ret)
1146                 return ret;
1147
1148         if (!connector->base.encoder ||
1149             connector->base.status != connector_status_connected) {
1150                 ret = -ENODEV;
1151                 goto out;
1152         }
1153
1154         seq_printf(m, "%s:%d HDCP version: ", connector->base.name,
1155                    connector->base.base.id);
1156         intel_hdcp_info(m, connector);
1157
1158 out:
1159         drm_modeset_unlock(&i915->drm.mode_config.connection_mutex);
1160
1161         return ret;
1162 }
1163 DEFINE_SHOW_ATTRIBUTE(i915_hdcp_sink_capability);
1164
1165 static int i915_lpsp_capability_show(struct seq_file *m, void *data)
1166 {
1167         struct intel_connector *connector = m->private;
1168         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1169         struct intel_encoder *encoder = intel_attached_encoder(connector);
1170         int connector_type = connector->base.connector_type;
1171         bool lpsp_capable = false;
1172
1173         if (!encoder)
1174                 return -ENODEV;
1175
1176         if (connector->base.status != connector_status_connected)
1177                 return -ENODEV;
1178
1179         if (DISPLAY_VER(i915) >= 13)
1180                 lpsp_capable = encoder->port <= PORT_B;
1181         else if (DISPLAY_VER(i915) >= 12)
1182                 /*
1183                  * Actually TGL can drive LPSP on port till DDI_C
1184                  * but there is no physical connected DDI_C on TGL sku's,
1185                  * even driver is not initilizing DDI_C port for gen12.
1186                  */
1187                 lpsp_capable = encoder->port <= PORT_B;
1188         else if (DISPLAY_VER(i915) == 11)
1189                 lpsp_capable = (connector_type == DRM_MODE_CONNECTOR_DSI ||
1190                                 connector_type == DRM_MODE_CONNECTOR_eDP);
1191         else if (IS_DISPLAY_VER(i915, 9, 10))
1192                 lpsp_capable = (encoder->port == PORT_A &&
1193                                 (connector_type == DRM_MODE_CONNECTOR_DSI ||
1194                                  connector_type == DRM_MODE_CONNECTOR_eDP ||
1195                                  connector_type == DRM_MODE_CONNECTOR_DisplayPort));
1196         else if (IS_HASWELL(i915) || IS_BROADWELL(i915))
1197                 lpsp_capable = connector_type == DRM_MODE_CONNECTOR_eDP;
1198
1199         seq_printf(m, "LPSP: %s\n", lpsp_capable ? "capable" : "incapable");
1200
1201         return 0;
1202 }
1203 DEFINE_SHOW_ATTRIBUTE(i915_lpsp_capability);
1204
1205 static int i915_dsc_fec_support_show(struct seq_file *m, void *data)
1206 {
1207         struct intel_connector *connector = m->private;
1208         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1209         struct drm_crtc *crtc;
1210         struct intel_dp *intel_dp;
1211         struct drm_modeset_acquire_ctx ctx;
1212         struct intel_crtc_state *crtc_state = NULL;
1213         int ret = 0;
1214         bool try_again = false;
1215
1216         drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
1217
1218         do {
1219                 try_again = false;
1220                 ret = drm_modeset_lock(&i915->drm.mode_config.connection_mutex,
1221                                        &ctx);
1222                 if (ret) {
1223                         if (ret == -EDEADLK && !drm_modeset_backoff(&ctx)) {
1224                                 try_again = true;
1225                                 continue;
1226                         }
1227                         break;
1228                 }
1229                 crtc = connector->base.state->crtc;
1230                 if (connector->base.status != connector_status_connected || !crtc) {
1231                         ret = -ENODEV;
1232                         break;
1233                 }
1234                 ret = drm_modeset_lock(&crtc->mutex, &ctx);
1235                 if (ret == -EDEADLK) {
1236                         ret = drm_modeset_backoff(&ctx);
1237                         if (!ret) {
1238                                 try_again = true;
1239                                 continue;
1240                         }
1241                         break;
1242                 } else if (ret) {
1243                         break;
1244                 }
1245                 intel_dp = intel_attached_dp(connector);
1246                 crtc_state = to_intel_crtc_state(crtc->state);
1247                 seq_printf(m, "DSC_Enabled: %s\n",
1248                            str_yes_no(crtc_state->dsc.compression_enable));
1249                 seq_printf(m, "DSC_Sink_Support: %s\n",
1250                            str_yes_no(drm_dp_sink_supports_dsc(connector->dp.dsc_dpcd)));
1251                 seq_printf(m, "DSC_Output_Format_Sink_Support: RGB: %s YCBCR420: %s YCBCR444: %s\n",
1252                            str_yes_no(drm_dp_dsc_sink_supports_format(connector->dp.dsc_dpcd,
1253                                                                       DP_DSC_RGB)),
1254                            str_yes_no(drm_dp_dsc_sink_supports_format(connector->dp.dsc_dpcd,
1255                                                                       DP_DSC_YCbCr420_Native)),
1256                            str_yes_no(drm_dp_dsc_sink_supports_format(connector->dp.dsc_dpcd,
1257                                                                       DP_DSC_YCbCr444)));
1258                 seq_printf(m, "DSC_Sink_BPP_Precision: %d\n",
1259                            drm_dp_dsc_sink_bpp_incr(connector->dp.dsc_dpcd));
1260                 seq_printf(m, "Force_DSC_Enable: %s\n",
1261                            str_yes_no(intel_dp->force_dsc_en));
1262                 if (!intel_dp_is_edp(intel_dp))
1263                         seq_printf(m, "FEC_Sink_Support: %s\n",
1264                                    str_yes_no(drm_dp_sink_supports_fec(connector->dp.fec_capability)));
1265         } while (try_again);
1266
1267         drm_modeset_drop_locks(&ctx);
1268         drm_modeset_acquire_fini(&ctx);
1269
1270         return ret;
1271 }
1272
1273 static ssize_t i915_dsc_fec_support_write(struct file *file,
1274                                           const char __user *ubuf,
1275                                           size_t len, loff_t *offp)
1276 {
1277         struct seq_file *m = file->private_data;
1278         struct intel_connector *connector = m->private;
1279         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1280         struct intel_encoder *encoder = intel_attached_encoder(connector);
1281         struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1282         bool dsc_enable = false;
1283         int ret;
1284
1285         if (len == 0)
1286                 return 0;
1287
1288         drm_dbg(&i915->drm,
1289                 "Copied %zu bytes from user to force DSC\n", len);
1290
1291         ret = kstrtobool_from_user(ubuf, len, &dsc_enable);
1292         if (ret < 0)
1293                 return ret;
1294
1295         drm_dbg(&i915->drm, "Got %s for DSC Enable\n",
1296                 (dsc_enable) ? "true" : "false");
1297         intel_dp->force_dsc_en = dsc_enable;
1298
1299         *offp += len;
1300         return len;
1301 }
1302
1303 static int i915_dsc_fec_support_open(struct inode *inode,
1304                                      struct file *file)
1305 {
1306         return single_open(file, i915_dsc_fec_support_show,
1307                            inode->i_private);
1308 }
1309
1310 static const struct file_operations i915_dsc_fec_support_fops = {
1311         .owner = THIS_MODULE,
1312         .open = i915_dsc_fec_support_open,
1313         .read = seq_read,
1314         .llseek = seq_lseek,
1315         .release = single_release,
1316         .write = i915_dsc_fec_support_write
1317 };
1318
1319 static int i915_dsc_bpc_show(struct seq_file *m, void *data)
1320 {
1321         struct intel_connector *connector = m->private;
1322         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1323         struct intel_encoder *encoder = intel_attached_encoder(connector);
1324         struct drm_crtc *crtc;
1325         struct intel_crtc_state *crtc_state;
1326         int ret;
1327
1328         if (!encoder)
1329                 return -ENODEV;
1330
1331         ret = drm_modeset_lock_single_interruptible(&i915->drm.mode_config.connection_mutex);
1332         if (ret)
1333                 return ret;
1334
1335         crtc = connector->base.state->crtc;
1336         if (connector->base.status != connector_status_connected || !crtc) {
1337                 ret = -ENODEV;
1338                 goto out;
1339         }
1340
1341         crtc_state = to_intel_crtc_state(crtc->state);
1342         seq_printf(m, "Input_BPC: %d\n", crtc_state->dsc.config.bits_per_component);
1343
1344 out:    drm_modeset_unlock(&i915->drm.mode_config.connection_mutex);
1345
1346         return ret;
1347 }
1348
1349 static ssize_t i915_dsc_bpc_write(struct file *file,
1350                                   const char __user *ubuf,
1351                                   size_t len, loff_t *offp)
1352 {
1353         struct seq_file *m = file->private_data;
1354         struct intel_connector *connector = m->private;
1355         struct intel_encoder *encoder = intel_attached_encoder(connector);
1356         struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1357         int dsc_bpc = 0;
1358         int ret;
1359
1360         ret = kstrtoint_from_user(ubuf, len, 0, &dsc_bpc);
1361         if (ret < 0)
1362                 return ret;
1363
1364         intel_dp->force_dsc_bpc = dsc_bpc;
1365         *offp += len;
1366
1367         return len;
1368 }
1369
1370 static int i915_dsc_bpc_open(struct inode *inode,
1371                              struct file *file)
1372 {
1373         return single_open(file, i915_dsc_bpc_show, inode->i_private);
1374 }
1375
1376 static const struct file_operations i915_dsc_bpc_fops = {
1377         .owner = THIS_MODULE,
1378         .open = i915_dsc_bpc_open,
1379         .read = seq_read,
1380         .llseek = seq_lseek,
1381         .release = single_release,
1382         .write = i915_dsc_bpc_write
1383 };
1384
1385 static int i915_dsc_output_format_show(struct seq_file *m, void *data)
1386 {
1387         struct intel_connector *connector = m->private;
1388         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1389         struct intel_encoder *encoder = intel_attached_encoder(connector);
1390         struct drm_crtc *crtc;
1391         struct intel_crtc_state *crtc_state;
1392         int ret;
1393
1394         if (!encoder)
1395                 return -ENODEV;
1396
1397         ret = drm_modeset_lock_single_interruptible(&i915->drm.mode_config.connection_mutex);
1398         if (ret)
1399                 return ret;
1400
1401         crtc = connector->base.state->crtc;
1402         if (connector->base.status != connector_status_connected || !crtc) {
1403                 ret = -ENODEV;
1404                 goto out;
1405         }
1406
1407         crtc_state = to_intel_crtc_state(crtc->state);
1408         seq_printf(m, "DSC_Output_Format: %s\n",
1409                    intel_output_format_name(crtc_state->output_format));
1410
1411 out:    drm_modeset_unlock(&i915->drm.mode_config.connection_mutex);
1412
1413         return ret;
1414 }
1415
1416 static ssize_t i915_dsc_output_format_write(struct file *file,
1417                                             const char __user *ubuf,
1418                                             size_t len, loff_t *offp)
1419 {
1420         struct seq_file *m = file->private_data;
1421         struct intel_connector *connector = m->private;
1422         struct intel_encoder *encoder = intel_attached_encoder(connector);
1423         struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1424         int dsc_output_format = 0;
1425         int ret;
1426
1427         ret = kstrtoint_from_user(ubuf, len, 0, &dsc_output_format);
1428         if (ret < 0)
1429                 return ret;
1430
1431         intel_dp->force_dsc_output_format = dsc_output_format;
1432         *offp += len;
1433
1434         return len;
1435 }
1436
1437 static int i915_dsc_output_format_open(struct inode *inode,
1438                                        struct file *file)
1439 {
1440         return single_open(file, i915_dsc_output_format_show, inode->i_private);
1441 }
1442
1443 static const struct file_operations i915_dsc_output_format_fops = {
1444         .owner = THIS_MODULE,
1445         .open = i915_dsc_output_format_open,
1446         .read = seq_read,
1447         .llseek = seq_lseek,
1448         .release = single_release,
1449         .write = i915_dsc_output_format_write
1450 };
1451
1452 static int i915_dsc_fractional_bpp_show(struct seq_file *m, void *data)
1453 {
1454         struct intel_connector *connector = m->private;
1455         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1456         struct intel_encoder *encoder = intel_attached_encoder(connector);
1457         struct drm_crtc *crtc;
1458         struct intel_dp *intel_dp;
1459         int ret;
1460
1461         if (!encoder)
1462                 return -ENODEV;
1463
1464         ret = drm_modeset_lock_single_interruptible(&i915->drm.mode_config.connection_mutex);
1465         if (ret)
1466                 return ret;
1467
1468         crtc = connector->base.state->crtc;
1469         if (connector->base.status != connector_status_connected || !crtc) {
1470                 ret = -ENODEV;
1471                 goto out;
1472         }
1473
1474         intel_dp = intel_attached_dp(connector);
1475         seq_printf(m, "Force_DSC_Fractional_BPP_Enable: %s\n",
1476                    str_yes_no(intel_dp->force_dsc_fractional_bpp_en));
1477
1478 out:
1479         drm_modeset_unlock(&i915->drm.mode_config.connection_mutex);
1480
1481         return ret;
1482 }
1483
1484 static ssize_t i915_dsc_fractional_bpp_write(struct file *file,
1485                                              const char __user *ubuf,
1486                                              size_t len, loff_t *offp)
1487 {
1488         struct seq_file *m = file->private_data;
1489         struct intel_connector *connector = m->private;
1490         struct intel_encoder *encoder = intel_attached_encoder(connector);
1491         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1492         struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1493         bool dsc_fractional_bpp_enable = false;
1494         int ret;
1495
1496         if (len == 0)
1497                 return 0;
1498
1499         drm_dbg(&i915->drm,
1500                 "Copied %zu bytes from user to force fractional bpp for DSC\n", len);
1501
1502         ret = kstrtobool_from_user(ubuf, len, &dsc_fractional_bpp_enable);
1503         if (ret < 0)
1504                 return ret;
1505
1506         drm_dbg(&i915->drm, "Got %s for DSC Fractional BPP Enable\n",
1507                 (dsc_fractional_bpp_enable) ? "true" : "false");
1508         intel_dp->force_dsc_fractional_bpp_en = dsc_fractional_bpp_enable;
1509
1510         *offp += len;
1511
1512         return len;
1513 }
1514
1515 static int i915_dsc_fractional_bpp_open(struct inode *inode,
1516                                         struct file *file)
1517 {
1518         return single_open(file, i915_dsc_fractional_bpp_show, inode->i_private);
1519 }
1520
1521 static const struct file_operations i915_dsc_fractional_bpp_fops = {
1522         .owner = THIS_MODULE,
1523         .open = i915_dsc_fractional_bpp_open,
1524         .read = seq_read,
1525         .llseek = seq_lseek,
1526         .release = single_release,
1527         .write = i915_dsc_fractional_bpp_write
1528 };
1529
1530 /*
1531  * Returns the Current CRTC's bpc.
1532  * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc
1533  */
1534 static int i915_current_bpc_show(struct seq_file *m, void *data)
1535 {
1536         struct intel_crtc *crtc = m->private;
1537         struct intel_crtc_state *crtc_state;
1538         int ret;
1539
1540         ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
1541         if (ret)
1542                 return ret;
1543
1544         crtc_state = to_intel_crtc_state(crtc->base.state);
1545         seq_printf(m, "Current: %u\n", crtc_state->pipe_bpp / 3);
1546
1547         drm_modeset_unlock(&crtc->base.mutex);
1548
1549         return ret;
1550 }
1551 DEFINE_SHOW_ATTRIBUTE(i915_current_bpc);
1552
1553 /* Pipe may differ from crtc index if pipes are fused off */
1554 static int intel_crtc_pipe_show(struct seq_file *m, void *unused)
1555 {
1556         struct intel_crtc *crtc = m->private;
1557
1558         seq_printf(m, "%c\n", pipe_name(crtc->pipe));
1559
1560         return 0;
1561 }
1562 DEFINE_SHOW_ATTRIBUTE(intel_crtc_pipe);
1563
1564 /**
1565  * intel_connector_debugfs_add - add i915 specific connector debugfs files
1566  * @connector: pointer to a registered intel_connector
1567  *
1568  * Cleanup will be done by drm_connector_unregister() through a call to
1569  * drm_debugfs_connector_remove().
1570  */
1571 void intel_connector_debugfs_add(struct intel_connector *connector)
1572 {
1573         struct drm_i915_private *i915 = to_i915(connector->base.dev);
1574         struct dentry *root = connector->base.debugfs_entry;
1575         int connector_type = connector->base.connector_type;
1576
1577         /* The connector must have been registered beforehands. */
1578         if (!root)
1579                 return;
1580
1581         intel_drrs_connector_debugfs_add(connector);
1582         intel_psr_connector_debugfs_add(connector);
1583
1584         if (connector_type == DRM_MODE_CONNECTOR_eDP)
1585                 debugfs_create_file("i915_panel_timings", 0444, root,
1586                                     connector, &i915_panel_fops);
1587
1588         if (connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
1589             connector_type == DRM_MODE_CONNECTOR_HDMIA ||
1590             connector_type == DRM_MODE_CONNECTOR_HDMIB) {
1591                 debugfs_create_file("i915_hdcp_sink_capability", 0444, root,
1592                                     connector, &i915_hdcp_sink_capability_fops);
1593         }
1594
1595         if (DISPLAY_VER(i915) >= 11 &&
1596             ((connector_type == DRM_MODE_CONNECTOR_DisplayPort && !connector->mst_port) ||
1597              connector_type == DRM_MODE_CONNECTOR_eDP)) {
1598                 debugfs_create_file("i915_dsc_fec_support", 0644, root,
1599                                     connector, &i915_dsc_fec_support_fops);
1600
1601                 debugfs_create_file("i915_dsc_bpc", 0644, root,
1602                                     connector, &i915_dsc_bpc_fops);
1603
1604                 debugfs_create_file("i915_dsc_output_format", 0644, root,
1605                                     connector, &i915_dsc_output_format_fops);
1606
1607                 debugfs_create_file("i915_dsc_fractional_bpp", 0644, root,
1608                                     connector, &i915_dsc_fractional_bpp_fops);
1609         }
1610
1611         if (connector_type == DRM_MODE_CONNECTOR_DSI ||
1612             connector_type == DRM_MODE_CONNECTOR_eDP ||
1613             connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
1614             connector_type == DRM_MODE_CONNECTOR_HDMIA ||
1615             connector_type == DRM_MODE_CONNECTOR_HDMIB)
1616                 debugfs_create_file("i915_lpsp_capability", 0444, root,
1617                                     connector, &i915_lpsp_capability_fops);
1618 }
1619
1620 /**
1621  * intel_crtc_debugfs_add - add i915 specific crtc debugfs files
1622  * @crtc: pointer to a drm_crtc
1623  *
1624  * Failure to add debugfs entries should generally be ignored.
1625  */
1626 void intel_crtc_debugfs_add(struct intel_crtc *crtc)
1627 {
1628         struct dentry *root = crtc->base.debugfs_entry;
1629
1630         if (!root)
1631                 return;
1632
1633         crtc_updates_add(crtc);
1634         intel_drrs_crtc_debugfs_add(crtc);
1635         intel_fbc_crtc_debugfs_add(crtc);
1636         hsw_ips_crtc_debugfs_add(crtc);
1637
1638         debugfs_create_file("i915_current_bpc", 0444, root, crtc,
1639                             &i915_current_bpc_fops);
1640         debugfs_create_file("i915_pipe", 0444, root, crtc,
1641                             &intel_crtc_pipe_fops);
1642 }