drivers/gpu/drm/drm_debugfs.c

   1 /*
   2  * Created: Sun Dec 21 13:08:50 2008 by [email protected]
   3  *
   4  * Copyright 2008 Ben Gamari <[email protected]>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include <linux/debugfs.h>
  27 #include <linux/export.h>
  28 #include <linux/seq_file.h>
  29 #include <linux/slab.h>
  30 #include <linux/uaccess.h>
  31
  32 #include <drm/drm_atomic.h>
  33 #include <drm/drm_auth.h>
  34 #include <drm/drm_bridge.h>
  35 #include <drm/drm_debugfs.h>
  36 #include <drm/drm_device.h>
  37 #include <drm/drm_drv.h>
  38 #include <drm/drm_edid.h>
  39 #include <drm/drm_file.h>
  40 #include <drm/drm_gem.h>
  41 #include <drm/drm_managed.h>
  42 #include <drm/drm_gpuvm.h>
  43
  44 #include "drm_crtc_internal.h"
  45 #include "drm_internal.h"
  46
  47 /***************************************************
  48  * Initialization, etc.
  49  **************************************************/
  50
  51 static int drm_name_info(struct seq_file *m, void *data)
  52 {
  53         struct drm_debugfs_entry *entry = m->private;
  54         struct drm_device *dev = entry->dev;
  55         struct drm_master *master;
  56
  57         mutex_lock(&dev->master_mutex);
  58         master = dev->master;
  59         seq_printf(m, "%s", dev->driver->name);
  60         if (dev->dev)
  61                 seq_printf(m, " dev=%s", dev_name(dev->dev));
  62         if (master && master->unique)
  63                 seq_printf(m, " master=%s", master->unique);
  64         if (dev->unique)
  65                 seq_printf(m, " unique=%s", dev->unique);
  66         seq_printf(m, "\n");
  67         mutex_unlock(&dev->master_mutex);
  68
  69         return 0;
  70 }
  71
  72 static int drm_clients_info(struct seq_file *m, void *data)
  73 {
  74         struct drm_debugfs_entry *entry = m->private;
  75         struct drm_device *dev = entry->dev;
  76         struct drm_file *priv;
  77         kuid_t uid;
  78
  79         seq_printf(m,
  80                    "%20s %5s %3s master a %5s %10s %*s\n",
  81                    "command",
  82                    "tgid",
  83                    "dev",
  84                    "uid",
  85                    "magic",
  86                    DRM_CLIENT_NAME_MAX_LEN,
  87                    "name");
  88
  89         /* dev->filelist is sorted youngest first, but we want to present
  90          * oldest first (i.e. kernel, servers, clients), so walk backwardss.
  91          */
  92         mutex_lock(&dev->filelist_mutex);
  93         list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
  94                 bool is_current_master = drm_is_current_master(priv);
  95                 struct task_struct *task;
  96                 struct pid *pid;
  97
  98                 mutex_lock(&priv->client_name_lock);
  99                 rcu_read_lock(); /* Locks priv->pid and pid_task()->comm! */
 100                 pid = rcu_dereference(priv->pid);
 101                 task = pid_task(pid, PIDTYPE_TGID);
 102                 uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID;
 103                 seq_printf(m, "%20s %5d %3d   %c    %c %5d %10u %*s\n",
 104                            task ? task->comm : "<unknown>",
 105                            pid_vnr(pid),
 106                            priv->minor->index,
 107                            is_current_master ? 'y' : 'n',
 108                            priv->authenticated ? 'y' : 'n',
 109                            from_kuid_munged(seq_user_ns(m), uid),
 110                            priv->magic,
 111                            DRM_CLIENT_NAME_MAX_LEN,
 112                            priv->client_name ? priv->client_name : "<unset>");
 113                 rcu_read_unlock();
 114                 mutex_unlock(&priv->client_name_lock);
 115         }
 116         mutex_unlock(&dev->filelist_mutex);
 117         return 0;
 118 }
 119
 120 static int drm_gem_one_name_info(int id, void *ptr, void *data)
 121 {
 122         struct drm_gem_object *obj = ptr;
 123         struct seq_file *m = data;
 124
 125         seq_printf(m, "%6d %8zd %7d %8d\n",
 126                    obj->name, obj->size,
 127                    obj->handle_count,
 128                    kref_read(&obj->refcount));
 129         return 0;
 130 }
 131
 132 static int drm_gem_name_info(struct seq_file *m, void *data)
 133 {
 134         struct drm_debugfs_entry *entry = m->private;
 135         struct drm_device *dev = entry->dev;
 136
 137         seq_printf(m, "  name     size handles refcount\n");
 138
 139         mutex_lock(&dev->object_name_lock);
 140         idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
 141         mutex_unlock(&dev->object_name_lock);
 142
 143         return 0;
 144 }
 145
 146 static const struct drm_debugfs_info drm_debugfs_list[] = {
 147         {"name", drm_name_info, 0},
 148         {"clients", drm_clients_info, 0},
 149         {"gem_names", drm_gem_name_info, DRIVER_GEM},
 150 };
 151 #define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list)
 152
 153
 154 static int drm_debugfs_open(struct inode *inode, struct file *file)
 155 {
 156         struct drm_info_node *node = inode->i_private;
 157
 158         if (!device_is_registered(node->minor->kdev))
 159                 return -ENODEV;
 160
 161         return single_open(file, node->info_ent->show, node);
 162 }
 163
 164 static int drm_debugfs_entry_open(struct inode *inode, struct file *file)
 165 {
 166         struct drm_debugfs_entry *entry = inode->i_private;
 167         struct drm_debugfs_info *node = &entry->file;
 168         struct drm_minor *minor = entry->dev->primary ?: entry->dev->accel;
 169
 170         if (!device_is_registered(minor->kdev))
 171                 return -ENODEV;
 172
 173         return single_open(file, node->show, entry);
 174 }
 175
 176 static const struct file_operations drm_debugfs_entry_fops = {
 177         .owner = THIS_MODULE,
 178         .open = drm_debugfs_entry_open,
 179         .read = seq_read,
 180         .llseek = seq_lseek,
 181         .release = single_release,
 182 };
 183
 184 static const struct file_operations drm_debugfs_fops = {
 185         .owner = THIS_MODULE,
 186         .open = drm_debugfs_open,
 187         .read = seq_read,
 188         .llseek = seq_lseek,
 189         .release = single_release,
 190 };
 191
 192 /**
 193  * drm_debugfs_gpuva_info - dump the given DRM GPU VA space
 194  * @m: pointer to the &seq_file to write
 195  * @gpuvm: the &drm_gpuvm representing the GPU VA space
 196  *
 197  * Dumps the GPU VA mappings of a given DRM GPU VA manager.
 198  *
 199  * For each DRM GPU VA space drivers should call this function from their
 200  * &drm_info_list's show callback.
 201  *
 202  * Returns: 0 on success, -ENODEV if the &gpuvm is not initialized
 203  */
 204 int drm_debugfs_gpuva_info(struct seq_file *m,
 205                            struct drm_gpuvm *gpuvm)
 206 {
 207         struct drm_gpuva *va, *kva = &gpuvm->kernel_alloc_node;
 208
 209         if (!gpuvm->name)
 210                 return -ENODEV;
 211
 212         seq_printf(m, "DRM GPU VA space (%s) [0x%016llx;0x%016llx]\n",
 213                    gpuvm->name, gpuvm->mm_start, gpuvm->mm_start + gpuvm->mm_range);
 214         seq_printf(m, "Kernel reserved node [0x%016llx;0x%016llx]\n",
 215                    kva->va.addr, kva->va.addr + kva->va.range);
 216         seq_puts(m, "\n");
 217         seq_puts(m, " VAs | start              | range              | end                | object             | object offset\n");
 218         seq_puts(m, "-------------------------------------------------------------------------------------------------------------\n");
 219         drm_gpuvm_for_each_va(va, gpuvm) {
 220                 if (unlikely(va == kva))
 221                         continue;
 222
 223                 seq_printf(m, "     | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx\n",
 224                            va->va.addr, va->va.range, va->va.addr + va->va.range,
 225                            (u64)(uintptr_t)va->gem.obj, va->gem.offset);
 226         }
 227
 228         return 0;
 229 }
 230 EXPORT_SYMBOL(drm_debugfs_gpuva_info);
 231
 232 /**
 233  * drm_debugfs_create_files - Initialize a given set of debugfs files for DRM
 234  *                      minor
 235  * @files: The array of files to create
 236  * @count: The number of files given
 237  * @root: DRI debugfs dir entry.
 238  * @minor: device minor number
 239  *
 240  * Create a given set of debugfs files represented by an array of
 241  * &struct drm_info_list in the given root directory. These files will be removed
 242  * automatically on drm_debugfs_dev_fini().
 243  */
 244 void drm_debugfs_create_files(const struct drm_info_list *files, int count,
 245                               struct dentry *root, struct drm_minor *minor)
 246 {
 247         struct drm_device *dev = minor->dev;
 248         struct drm_info_node *tmp;
 249         int i;
 250
 251         for (i = 0; i < count; i++) {
 252                 u32 features = files[i].driver_features;
 253
 254                 if (features && !drm_core_check_all_features(dev, features))
 255                         continue;
 256
 257                 tmp = drmm_kzalloc(dev, sizeof(*tmp), GFP_KERNEL);
 258                 if (tmp == NULL)
 259                         continue;
 260
 261                 tmp->minor = minor;
 262                 tmp->dent = debugfs_create_file(files[i].name,
 263                                                 0444, root, tmp,
 264                                                 &drm_debugfs_fops);
 265                 tmp->info_ent = &files[i];
 266         }
 267 }
 268 EXPORT_SYMBOL(drm_debugfs_create_files);
 269
 270 int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
 271                              struct dentry *root, struct drm_minor *minor)
 272 {
 273         int i;
 274
 275         for (i = 0; i < count; i++) {
 276                 struct dentry *dent = debugfs_lookup(files[i].name, root);
 277
 278                 if (!dent)
 279                         continue;
 280
 281                 drmm_kfree(minor->dev, d_inode(dent)->i_private);
 282                 debugfs_remove(dent);
 283         }
 284         return 0;
 285 }
 286 EXPORT_SYMBOL(drm_debugfs_remove_files);
 287
 288 /**
 289  * drm_debugfs_dev_init - create debugfs directory for the device
 290  * @dev: the device which we want to create the directory for
 291  * @root: the parent directory depending on the device type
 292  *
 293  * Creates the debugfs directory for the device under the given root directory.
 294  */
 295 void drm_debugfs_dev_init(struct drm_device *dev, struct dentry *root)
 296 {
 297         dev->debugfs_root = debugfs_create_dir(dev->unique, root);
 298 }
 299
 300 /**
 301  * drm_debugfs_dev_fini - cleanup debugfs directory
 302  * @dev: the device to cleanup the debugfs stuff
 303  *
 304  * Remove the debugfs directory, might be called multiple times.
 305  */
 306 void drm_debugfs_dev_fini(struct drm_device *dev)
 307 {
 308         debugfs_remove_recursive(dev->debugfs_root);
 309         dev->debugfs_root = NULL;
 310 }
 311
 312 void drm_debugfs_dev_register(struct drm_device *dev)
 313 {
 314         drm_debugfs_add_files(dev, drm_debugfs_list, DRM_DEBUGFS_ENTRIES);
 315
 316         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 317                 drm_framebuffer_debugfs_init(dev);
 318                 drm_client_debugfs_init(dev);
 319         }
 320         if (drm_drv_uses_atomic_modeset(dev))
 321                 drm_atomic_debugfs_init(dev);
 322 }
 323
 324 int drm_debugfs_register(struct drm_minor *minor, int minor_id,
 325                          struct dentry *root)
 326 {
 327         struct drm_device *dev = minor->dev;
 328         char name[64];
 329
 330         sprintf(name, "%d", minor_id);
 331         minor->debugfs_symlink = debugfs_create_symlink(name, root,
 332                                                         dev->unique);
 333
 334         /* TODO: Only for compatibility with drivers */
 335         minor->debugfs_root = dev->debugfs_root;
 336
 337         if (dev->driver->debugfs_init && dev->render != minor)
 338                 dev->driver->debugfs_init(minor);
 339
 340         return 0;
 341 }
 342
 343 void drm_debugfs_unregister(struct drm_minor *minor)
 344 {
 345         debugfs_remove(minor->debugfs_symlink);
 346         minor->debugfs_symlink = NULL;
 347 }
 348
 349 /**
 350  * drm_debugfs_add_file - Add a given file to the DRM device debugfs file list
 351  * @dev: drm device for the ioctl
 352  * @name: debugfs file name
 353  * @show: show callback
 354  * @data: driver-private data, should not be device-specific
 355  *
 356  * Add a given file entry to the DRM device debugfs file list to be created on
 357  * drm_debugfs_init.
 358  */
 359 void drm_debugfs_add_file(struct drm_device *dev, const char *name,
 360                           int (*show)(struct seq_file*, void*), void *data)
 361 {
 362         struct drm_debugfs_entry *entry = drmm_kzalloc(dev, sizeof(*entry), GFP_KERNEL);
 363
 364         if (!entry)
 365                 return;
 366
 367         entry->file.name = name;
 368         entry->file.show = show;
 369         entry->file.data = data;
 370         entry->dev = dev;
 371
 372         debugfs_create_file(name, 0444, dev->debugfs_root, entry,
 373                             &drm_debugfs_entry_fops);
 374 }
 375 EXPORT_SYMBOL(drm_debugfs_add_file);
 376
 377 /**
 378  * drm_debugfs_add_files - Add an array of files to the DRM device debugfs file list
 379  * @dev: drm device for the ioctl
 380  * @files: The array of files to create
 381  * @count: The number of files given
 382  *
 383  * Add a given set of debugfs files represented by an array of
 384  * &struct drm_debugfs_info in the DRM device debugfs file list.
 385  */
 386 void drm_debugfs_add_files(struct drm_device *dev, const struct drm_debugfs_info *files, int count)
 387 {
 388         int i;
 389
 390         for (i = 0; i < count; i++)
 391                 drm_debugfs_add_file(dev, files[i].name, files[i].show, files[i].data);
 392 }
 393 EXPORT_SYMBOL(drm_debugfs_add_files);
 394
 395 static int connector_show(struct seq_file *m, void *data)
 396 {
 397         struct drm_connector *connector = m->private;
 398
 399         seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force));
 400
 401         return 0;
 402 }
 403
 404 static int connector_open(struct inode *inode, struct file *file)
 405 {
 406         struct drm_connector *dev = inode->i_private;
 407
 408         return single_open(file, connector_show, dev);
 409 }
 410
 411 static ssize_t connector_write(struct file *file, const char __user *ubuf,
 412                                size_t len, loff_t *offp)
 413 {
 414         struct seq_file *m = file->private_data;
 415         struct drm_connector *connector = m->private;
 416         char buf[12];
 417
 418         if (len > sizeof(buf) - 1)
 419                 return -EINVAL;
 420
 421         if (copy_from_user(buf, ubuf, len))
 422                 return -EFAULT;
 423
 424         buf[len] = '\0';
 425
 426         if (sysfs_streq(buf, "on"))
 427                 connector->force = DRM_FORCE_ON;
 428         else if (sysfs_streq(buf, "digital"))
 429                 connector->force = DRM_FORCE_ON_DIGITAL;
 430         else if (sysfs_streq(buf, "off"))
 431                 connector->force = DRM_FORCE_OFF;
 432         else if (sysfs_streq(buf, "unspecified"))
 433                 connector->force = DRM_FORCE_UNSPECIFIED;
 434         else
 435                 return -EINVAL;
 436
 437         return len;
 438 }
 439
 440 static int edid_show(struct seq_file *m, void *data)
 441 {
 442         return drm_edid_override_show(m->private, m);
 443 }
 444
 445 static int edid_open(struct inode *inode, struct file *file)
 446 {
 447         struct drm_connector *dev = inode->i_private;
 448
 449         return single_open(file, edid_show, dev);
 450 }
 451
 452 static ssize_t edid_write(struct file *file, const char __user *ubuf,
 453                           size_t len, loff_t *offp)
 454 {
 455         struct seq_file *m = file->private_data;
 456         struct drm_connector *connector = m->private;
 457         char *buf;
 458         int ret;
 459
 460         buf = memdup_user(ubuf, len);
 461         if (IS_ERR(buf))
 462                 return PTR_ERR(buf);
 463
 464         if (len == 5 && !strncmp(buf, "reset", 5))
 465                 ret = drm_edid_override_reset(connector);
 466         else
 467                 ret = drm_edid_override_set(connector, buf, len);
 468
 469         kfree(buf);
 470
 471         return ret ? ret : len;
 472 }
 473
 474 /*
 475  * Returns the min and max vrr vfreq through the connector's debugfs file.
 476  * Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range
 477  */
 478 static int vrr_range_show(struct seq_file *m, void *data)
 479 {
 480         struct drm_connector *connector = m->private;
 481
 482         if (connector->status != connector_status_connected)
 483                 return -ENODEV;
 484
 485         seq_printf(m, "Min: %u\n", connector->display_info.monitor_range.min_vfreq);
 486         seq_printf(m, "Max: %u\n", connector->display_info.monitor_range.max_vfreq);
 487
 488         return 0;
 489 }
 490 DEFINE_SHOW_ATTRIBUTE(vrr_range);
 491
 492 /*
 493  * Returns Connector's max supported bpc through debugfs file.
 494  * Example usage: cat /sys/kernel/debug/dri/0/DP-1/output_bpc
 495  */
 496 static int output_bpc_show(struct seq_file *m, void *data)
 497 {
 498         struct drm_connector *connector = m->private;
 499
 500         if (connector->status != connector_status_connected)
 501                 return -ENODEV;
 502
 503         seq_printf(m, "Maximum: %u\n", connector->display_info.bpc);
 504
 505         return 0;
 506 }
 507 DEFINE_SHOW_ATTRIBUTE(output_bpc);
 508
 509 static const struct file_operations drm_edid_fops = {
 510         .owner = THIS_MODULE,
 511         .open = edid_open,
 512         .read = seq_read,
 513         .llseek = seq_lseek,
 514         .release = single_release,
 515         .write = edid_write
 516 };
 517
 518
 519 static const struct file_operations drm_connector_fops = {
 520         .owner = THIS_MODULE,
 521         .open = connector_open,
 522         .read = seq_read,
 523         .llseek = seq_lseek,
 524         .release = single_release,
 525         .write = connector_write
 526 };
 527
 528 static ssize_t
 529 audio_infoframe_read(struct file *filp, char __user *ubuf, size_t count, loff_t *ppos)
 530 {
 531         struct drm_connector_hdmi_infoframe *infoframe;
 532         struct drm_connector *connector;
 533         union hdmi_infoframe *frame;
 534         u8 buf[HDMI_INFOFRAME_SIZE(AUDIO)];
 535         ssize_t len = 0;
 536
 537         connector = filp->private_data;
 538         mutex_lock(&connector->hdmi.infoframes.lock);
 539
 540         infoframe = &connector->hdmi.infoframes.audio;
 541         if (!infoframe->set)
 542                 goto out;
 543
 544         frame = &infoframe->data;
 545         len = hdmi_infoframe_pack(frame, buf, sizeof(buf));
 546         if (len < 0)
 547                 goto out;
 548
 549         len = simple_read_from_buffer(ubuf, count, ppos, buf, len);
 550
 551 out:
 552         mutex_unlock(&connector->hdmi.infoframes.lock);
 553         return len;
 554 }
 555
 556 static const struct file_operations audio_infoframe_fops = {
 557         .owner   = THIS_MODULE,
 558         .open    = simple_open,
 559         .read    = audio_infoframe_read,
 560 };
 561
 562 static int create_hdmi_audio_infoframe_file(struct drm_connector *connector,
 563                                             struct dentry *parent)
 564 {
 565         struct dentry *file;
 566
 567         file = debugfs_create_file("audio", 0400, parent, connector, &audio_infoframe_fops);
 568         if (IS_ERR(file))
 569                 return PTR_ERR(file);
 570
 571         return 0;
 572 }
 573
 574 #define DEFINE_INFOFRAME_FILE(_f) \
 575 static ssize_t _f##_read_infoframe(struct file *filp, \
 576                                    char __user *ubuf, \
 577                                    size_t count,      \
 578                                    loff_t *ppos)      \
 579 { \
 580         struct drm_connector_hdmi_infoframe *infoframe; \
 581         struct drm_connector_state *conn_state; \
 582         struct drm_connector *connector; \
 583         union hdmi_infoframe *frame; \
 584         struct drm_device *dev; \
 585         u8 buf[HDMI_INFOFRAME_SIZE(MAX)]; \
 586         ssize_t len = 0; \
 587         \
 588         connector = filp->private_data; \
 589         dev = connector->dev; \
 590         \
 591         drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); \
 592         \
 593         conn_state = connector->state; \
 594         infoframe = &conn_state->hdmi.infoframes._f; \
 595         if (!infoframe->set) \
 596                 goto out; \
 597         \
 598         frame = &infoframe->data; \
 599         len = hdmi_infoframe_pack(frame, buf, sizeof(buf)); \
 600         if (len < 0) \
 601                 goto out; \
 602         \
 603         len = simple_read_from_buffer(ubuf, count, ppos, buf, len); \
 604         \
 605 out: \
 606         drm_modeset_unlock(&dev->mode_config.connection_mutex); \
 607         return len; \
 608 } \
 609 \
 610 static const struct file_operations _f##_infoframe_fops = { \
 611         .owner = THIS_MODULE, \
 612         .open = simple_open, \
 613         .read = _f##_read_infoframe, \
 614 }; \
 615 \
 616 static int create_hdmi_## _f ## _infoframe_file(struct drm_connector *connector, \
 617                                                 struct dentry *parent) \
 618 { \
 619         struct dentry *file; \
 620         \
 621         file = debugfs_create_file(#_f, 0400, parent, connector, &_f ## _infoframe_fops); \
 622         if (IS_ERR(file)) \
 623                 return PTR_ERR(file); \
 624         \
 625         return 0; \
 626 }
 627
 628 DEFINE_INFOFRAME_FILE(avi);
 629 DEFINE_INFOFRAME_FILE(hdmi);
 630 DEFINE_INFOFRAME_FILE(hdr_drm);
 631 DEFINE_INFOFRAME_FILE(spd);
 632
 633 static int create_hdmi_infoframe_files(struct drm_connector *connector,
 634                                        struct dentry *parent)
 635 {
 636         int ret;
 637
 638         ret = create_hdmi_audio_infoframe_file(connector, parent);
 639         if (ret)
 640                 return ret;
 641
 642         ret = create_hdmi_avi_infoframe_file(connector, parent);
 643         if (ret)
 644                 return ret;
 645
 646         ret = create_hdmi_hdmi_infoframe_file(connector, parent);
 647         if (ret)
 648                 return ret;
 649
 650         ret = create_hdmi_hdr_drm_infoframe_file(connector, parent);
 651         if (ret)
 652                 return ret;
 653
 654         ret = create_hdmi_spd_infoframe_file(connector, parent);
 655         if (ret)
 656                 return ret;
 657
 658         return 0;
 659 }
 660
 661 static void hdmi_debugfs_add(struct drm_connector *connector)
 662 {
 663         struct dentry *dir;
 664
 665         if (!(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 666               connector->connector_type == DRM_MODE_CONNECTOR_HDMIB))
 667                 return;
 668
 669         dir = debugfs_create_dir("infoframes", connector->debugfs_entry);
 670         if (IS_ERR(dir))
 671                 return;
 672
 673         create_hdmi_infoframe_files(connector, dir);
 674 }
 675
 676 void drm_debugfs_connector_add(struct drm_connector *connector)
 677 {
 678         struct drm_device *dev = connector->dev;
 679         struct dentry *root;
 680
 681         if (!dev->debugfs_root)
 682                 return;
 683
 684         root = debugfs_create_dir(connector->name, dev->debugfs_root);
 685         connector->debugfs_entry = root;
 686
 687         /* force */
 688         debugfs_create_file("force", 0644, root, connector,
 689                             &drm_connector_fops);
 690
 691         /* edid */
 692         debugfs_create_file("edid_override", 0644, root, connector,
 693                             &drm_edid_fops);
 694
 695         /* vrr range */
 696         debugfs_create_file("vrr_range", 0444, root, connector,
 697                             &vrr_range_fops);
 698
 699         /* max bpc */
 700         debugfs_create_file("output_bpc", 0444, root, connector,
 701                             &output_bpc_fops);
 702
 703         hdmi_debugfs_add(connector);
 704
 705         if (connector->funcs->debugfs_init)
 706                 connector->funcs->debugfs_init(connector, root);
 707 }
 708
 709 void drm_debugfs_connector_remove(struct drm_connector *connector)
 710 {
 711         if (!connector->debugfs_entry)
 712                 return;
 713
 714         debugfs_remove_recursive(connector->debugfs_entry);
 715
 716         connector->debugfs_entry = NULL;
 717 }
 718
 719 void drm_debugfs_crtc_add(struct drm_crtc *crtc)
 720 {
 721         struct drm_device *dev = crtc->dev;
 722         struct dentry *root;
 723         char *name;
 724
 725         name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index);
 726         if (!name)
 727                 return;
 728
 729         root = debugfs_create_dir(name, dev->debugfs_root);
 730         kfree(name);
 731
 732         crtc->debugfs_entry = root;
 733
 734         drm_debugfs_crtc_crc_add(crtc);
 735 }
 736
 737 void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
 738 {
 739         debugfs_remove_recursive(crtc->debugfs_entry);
 740         crtc->debugfs_entry = NULL;
 741 }
 742
 743 static int bridges_show(struct seq_file *m, void *data)
 744 {
 745         struct drm_encoder *encoder = m->private;
 746         struct drm_printer p = drm_seq_file_printer(m);
 747         struct drm_bridge *bridge;
 748         unsigned int idx = 0;
 749
 750         drm_for_each_bridge_in_chain(encoder, bridge) {
 751                 drm_printf(&p, "bridge[%d]: %ps\n", idx++, bridge->funcs);
 752                 drm_printf(&p, "\ttype: [%d] %s\n",
 753                            bridge->type,
 754                            drm_get_connector_type_name(bridge->type));
 755
 756                 if (bridge->of_node)
 757                         drm_printf(&p, "\tOF: %pOFfc\n", bridge->of_node);
 758
 759                 drm_printf(&p, "\tops: [0x%x]", bridge->ops);
 760                 if (bridge->ops & DRM_BRIDGE_OP_DETECT)
 761                         drm_puts(&p, " detect");
 762                 if (bridge->ops & DRM_BRIDGE_OP_EDID)
 763                         drm_puts(&p, " edid");
 764                 if (bridge->ops & DRM_BRIDGE_OP_HPD)
 765                         drm_puts(&p, " hpd");
 766                 if (bridge->ops & DRM_BRIDGE_OP_MODES)
 767                         drm_puts(&p, " modes");
 768                 if (bridge->ops & DRM_BRIDGE_OP_HDMI)
 769                         drm_puts(&p, " hdmi");
 770                 drm_puts(&p, "\n");
 771         }
 772
 773         return 0;
 774 }
 775 DEFINE_SHOW_ATTRIBUTE(bridges);
 776
 777 void drm_debugfs_encoder_add(struct drm_encoder *encoder)
 778 {
 779         struct drm_minor *minor = encoder->dev->primary;
 780         struct dentry *root;
 781         char *name;
 782
 783         name = kasprintf(GFP_KERNEL, "encoder-%d", encoder->index);
 784         if (!name)
 785                 return;
 786
 787         root = debugfs_create_dir(name, minor->debugfs_root);
 788         kfree(name);
 789
 790         encoder->debugfs_entry = root;
 791
 792         /* bridges list */
 793         debugfs_create_file("bridges", 0444, root, encoder,
 794                             &bridges_fops);
 795
 796         if (encoder->funcs && encoder->funcs->debugfs_init)
 797                 encoder->funcs->debugfs_init(encoder, root);
 798 }
 799
 800 void drm_debugfs_encoder_remove(struct drm_encoder *encoder)
 801 {
 802         debugfs_remove_recursive(encoder->debugfs_entry);
 803         encoder->debugfs_entry = NULL;
 804 }