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