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