1 /* 2 * Copyright (C) 2012 Avionic Design GmbH 3 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 */ 9 10 #include <linux/host1x.h> 11 12 #include "drm.h" 13 #include "gem.h" 14 15 #define DRIVER_NAME "tegra" 16 #define DRIVER_DESC "NVIDIA Tegra graphics" 17 #define DRIVER_DATE "20120330" 18 #define DRIVER_MAJOR 0 19 #define DRIVER_MINOR 0 20 #define DRIVER_PATCHLEVEL 0 21 22 struct tegra_drm_file { 23 struct list_head contexts; 24 }; 25 26 static int tegra_drm_load(struct drm_device *drm, unsigned long flags) 27 { 28 struct host1x_device *device = to_host1x_device(drm->dev); 29 struct tegra_drm *tegra; 30 int err; 31 32 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); 33 if (!tegra) 34 return -ENOMEM; 35 36 dev_set_drvdata(drm->dev, tegra); 37 mutex_init(&tegra->clients_lock); 38 INIT_LIST_HEAD(&tegra->clients); 39 drm->dev_private = tegra; 40 tegra->drm = drm; 41 42 drm_mode_config_init(drm); 43 44 err = host1x_device_init(device); 45 if (err < 0) 46 return err; 47 48 /* 49 * We don't use the drm_irq_install() helpers provided by the DRM 50 * core, so we need to set this manually in order to allow the 51 * DRM_IOCTL_WAIT_VBLANK to operate correctly. 52 */ 53 drm->irq_enabled = true; 54 55 err = drm_vblank_init(drm, drm->mode_config.num_crtc); 56 if (err < 0) 57 return err; 58 59 err = tegra_drm_fb_init(drm); 60 if (err < 0) 61 return err; 62 63 drm_kms_helper_poll_init(drm); 64 65 return 0; 66 } 67 68 static int tegra_drm_unload(struct drm_device *drm) 69 { 70 struct host1x_device *device = to_host1x_device(drm->dev); 71 int err; 72 73 drm_kms_helper_poll_fini(drm); 74 tegra_drm_fb_exit(drm); 75 drm_vblank_cleanup(drm); 76 drm_mode_config_cleanup(drm); 77 78 err = host1x_device_exit(device); 79 if (err < 0) 80 return err; 81 82 return 0; 83 } 84 85 static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) 86 { 87 struct tegra_drm_file *fpriv; 88 89 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL); 90 if (!fpriv) 91 return -ENOMEM; 92 93 INIT_LIST_HEAD(&fpriv->contexts); 94 filp->driver_priv = fpriv; 95 96 return 0; 97 } 98 99 static void tegra_drm_context_free(struct tegra_drm_context *context) 100 { 101 context->client->ops->close_channel(context); 102 kfree(context); 103 } 104 105 static void tegra_drm_lastclose(struct drm_device *drm) 106 { 107 struct tegra_drm *tegra = drm->dev_private; 108 109 tegra_fbdev_restore_mode(tegra->fbdev); 110 } 111 112 static struct host1x_bo * 113 host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle) 114 { 115 struct drm_gem_object *gem; 116 struct tegra_bo *bo; 117 118 gem = drm_gem_object_lookup(drm, file, handle); 119 if (!gem) 120 return NULL; 121 122 mutex_lock(&drm->struct_mutex); 123 drm_gem_object_unreference(gem); 124 mutex_unlock(&drm->struct_mutex); 125 126 bo = to_tegra_bo(gem); 127 return &bo->base; 128 } 129 130 int tegra_drm_submit(struct tegra_drm_context *context, 131 struct drm_tegra_submit *args, struct drm_device *drm, 132 struct drm_file *file) 133 { 134 unsigned int num_cmdbufs = args->num_cmdbufs; 135 unsigned int num_relocs = args->num_relocs; 136 unsigned int num_waitchks = args->num_waitchks; 137 struct drm_tegra_cmdbuf __user *cmdbufs = 138 (void __user *)(uintptr_t)args->cmdbufs; 139 struct drm_tegra_reloc __user *relocs = 140 (void __user *)(uintptr_t)args->relocs; 141 struct drm_tegra_waitchk __user *waitchks = 142 (void __user *)(uintptr_t)args->waitchks; 143 struct drm_tegra_syncpt syncpt; 144 struct host1x_job *job; 145 int err; 146 147 /* We don't yet support other than one syncpt_incr struct per submit */ 148 if (args->num_syncpts != 1) 149 return -EINVAL; 150 151 job = host1x_job_alloc(context->channel, args->num_cmdbufs, 152 args->num_relocs, args->num_waitchks); 153 if (!job) 154 return -ENOMEM; 155 156 job->num_relocs = args->num_relocs; 157 job->num_waitchk = args->num_waitchks; 158 job->client = (u32)args->context; 159 job->class = context->client->base.class; 160 job->serialize = true; 161 162 while (num_cmdbufs) { 163 struct drm_tegra_cmdbuf cmdbuf; 164 struct host1x_bo *bo; 165 166 if (copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf))) { 167 err = -EFAULT; 168 goto fail; 169 } 170 171 bo = host1x_bo_lookup(drm, file, cmdbuf.handle); 172 if (!bo) { 173 err = -ENOENT; 174 goto fail; 175 } 176 177 host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset); 178 num_cmdbufs--; 179 cmdbufs++; 180 } 181 182 if (copy_from_user(job->relocarray, relocs, 183 sizeof(*relocs) * num_relocs)) { 184 err = -EFAULT; 185 goto fail; 186 } 187 188 while (num_relocs--) { 189 struct host1x_reloc *reloc = &job->relocarray[num_relocs]; 190 struct host1x_bo *cmdbuf, *target; 191 192 cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf); 193 target = host1x_bo_lookup(drm, file, (u32)reloc->target); 194 195 reloc->cmdbuf = cmdbuf; 196 reloc->target = target; 197 198 if (!reloc->target || !reloc->cmdbuf) { 199 err = -ENOENT; 200 goto fail; 201 } 202 } 203 204 if (copy_from_user(job->waitchk, waitchks, 205 sizeof(*waitchks) * num_waitchks)) { 206 err = -EFAULT; 207 goto fail; 208 } 209 210 if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts, 211 sizeof(syncpt))) { 212 err = -EFAULT; 213 goto fail; 214 } 215 216 job->is_addr_reg = context->client->ops->is_addr_reg; 217 job->syncpt_incrs = syncpt.incrs; 218 job->syncpt_id = syncpt.id; 219 job->timeout = 10000; 220 221 if (args->timeout && args->timeout < 10000) 222 job->timeout = args->timeout; 223 224 err = host1x_job_pin(job, context->client->base.dev); 225 if (err) 226 goto fail; 227 228 err = host1x_job_submit(job); 229 if (err) 230 goto fail_submit; 231 232 args->fence = job->syncpt_end; 233 234 host1x_job_put(job); 235 return 0; 236 237 fail_submit: 238 host1x_job_unpin(job); 239 fail: 240 host1x_job_put(job); 241 return err; 242 } 243 244 245 #ifdef CONFIG_DRM_TEGRA_STAGING 246 static struct tegra_drm_context *tegra_drm_get_context(__u64 context) 247 { 248 return (struct tegra_drm_context *)(uintptr_t)context; 249 } 250 251 static bool tegra_drm_file_owns_context(struct tegra_drm_file *file, 252 struct tegra_drm_context *context) 253 { 254 struct tegra_drm_context *ctx; 255 256 list_for_each_entry(ctx, &file->contexts, list) 257 if (ctx == context) 258 return true; 259 260 return false; 261 } 262 263 static int tegra_gem_create(struct drm_device *drm, void *data, 264 struct drm_file *file) 265 { 266 struct drm_tegra_gem_create *args = data; 267 struct tegra_bo *bo; 268 269 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags, 270 &args->handle); 271 if (IS_ERR(bo)) 272 return PTR_ERR(bo); 273 274 return 0; 275 } 276 277 static int tegra_gem_mmap(struct drm_device *drm, void *data, 278 struct drm_file *file) 279 { 280 struct drm_tegra_gem_mmap *args = data; 281 struct drm_gem_object *gem; 282 struct tegra_bo *bo; 283 284 gem = drm_gem_object_lookup(drm, file, args->handle); 285 if (!gem) 286 return -EINVAL; 287 288 bo = to_tegra_bo(gem); 289 290 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node); 291 292 drm_gem_object_unreference(gem); 293 294 return 0; 295 } 296 297 static int tegra_syncpt_read(struct drm_device *drm, void *data, 298 struct drm_file *file) 299 { 300 struct host1x *host = dev_get_drvdata(drm->dev->parent); 301 struct drm_tegra_syncpt_read *args = data; 302 struct host1x_syncpt *sp; 303 304 sp = host1x_syncpt_get(host, args->id); 305 if (!sp) 306 return -EINVAL; 307 308 args->value = host1x_syncpt_read_min(sp); 309 return 0; 310 } 311 312 static int tegra_syncpt_incr(struct drm_device *drm, void *data, 313 struct drm_file *file) 314 { 315 struct host1x *host1x = dev_get_drvdata(drm->dev->parent); 316 struct drm_tegra_syncpt_incr *args = data; 317 struct host1x_syncpt *sp; 318 319 sp = host1x_syncpt_get(host1x, args->id); 320 if (!sp) 321 return -EINVAL; 322 323 return host1x_syncpt_incr(sp); 324 } 325 326 static int tegra_syncpt_wait(struct drm_device *drm, void *data, 327 struct drm_file *file) 328 { 329 struct host1x *host1x = dev_get_drvdata(drm->dev->parent); 330 struct drm_tegra_syncpt_wait *args = data; 331 struct host1x_syncpt *sp; 332 333 sp = host1x_syncpt_get(host1x, args->id); 334 if (!sp) 335 return -EINVAL; 336 337 return host1x_syncpt_wait(sp, args->thresh, args->timeout, 338 &args->value); 339 } 340 341 static int tegra_open_channel(struct drm_device *drm, void *data, 342 struct drm_file *file) 343 { 344 struct tegra_drm_file *fpriv = file->driver_priv; 345 struct tegra_drm *tegra = drm->dev_private; 346 struct drm_tegra_open_channel *args = data; 347 struct tegra_drm_context *context; 348 struct tegra_drm_client *client; 349 int err = -ENODEV; 350 351 context = kzalloc(sizeof(*context), GFP_KERNEL); 352 if (!context) 353 return -ENOMEM; 354 355 list_for_each_entry(client, &tegra->clients, list) 356 if (client->base.class == args->client) { 357 err = client->ops->open_channel(client, context); 358 if (err) 359 break; 360 361 list_add(&context->list, &fpriv->contexts); 362 args->context = (uintptr_t)context; 363 context->client = client; 364 return 0; 365 } 366 367 kfree(context); 368 return err; 369 } 370 371 static int tegra_close_channel(struct drm_device *drm, void *data, 372 struct drm_file *file) 373 { 374 struct tegra_drm_file *fpriv = file->driver_priv; 375 struct drm_tegra_close_channel *args = data; 376 struct tegra_drm_context *context; 377 378 context = tegra_drm_get_context(args->context); 379 380 if (!tegra_drm_file_owns_context(fpriv, context)) 381 return -EINVAL; 382 383 list_del(&context->list); 384 tegra_drm_context_free(context); 385 386 return 0; 387 } 388 389 static int tegra_get_syncpt(struct drm_device *drm, void *data, 390 struct drm_file *file) 391 { 392 struct tegra_drm_file *fpriv = file->driver_priv; 393 struct drm_tegra_get_syncpt *args = data; 394 struct tegra_drm_context *context; 395 struct host1x_syncpt *syncpt; 396 397 context = tegra_drm_get_context(args->context); 398 399 if (!tegra_drm_file_owns_context(fpriv, context)) 400 return -ENODEV; 401 402 if (args->index >= context->client->base.num_syncpts) 403 return -EINVAL; 404 405 syncpt = context->client->base.syncpts[args->index]; 406 args->id = host1x_syncpt_id(syncpt); 407 408 return 0; 409 } 410 411 static int tegra_submit(struct drm_device *drm, void *data, 412 struct drm_file *file) 413 { 414 struct tegra_drm_file *fpriv = file->driver_priv; 415 struct drm_tegra_submit *args = data; 416 struct tegra_drm_context *context; 417 418 context = tegra_drm_get_context(args->context); 419 420 if (!tegra_drm_file_owns_context(fpriv, context)) 421 return -ENODEV; 422 423 return context->client->ops->submit(context, args, drm, file); 424 } 425 426 static int tegra_get_syncpt_base(struct drm_device *drm, void *data, 427 struct drm_file *file) 428 { 429 struct tegra_drm_file *fpriv = file->driver_priv; 430 struct drm_tegra_get_syncpt_base *args = data; 431 struct tegra_drm_context *context; 432 struct host1x_syncpt_base *base; 433 struct host1x_syncpt *syncpt; 434 435 context = tegra_drm_get_context(args->context); 436 437 if (!tegra_drm_file_owns_context(fpriv, context)) 438 return -ENODEV; 439 440 if (args->syncpt >= context->client->base.num_syncpts) 441 return -EINVAL; 442 443 syncpt = context->client->base.syncpts[args->syncpt]; 444 445 base = host1x_syncpt_get_base(syncpt); 446 if (!base) 447 return -ENXIO; 448 449 args->id = host1x_syncpt_base_id(base); 450 451 return 0; 452 } 453 #endif 454 455 static const struct drm_ioctl_desc tegra_drm_ioctls[] = { 456 #ifdef CONFIG_DRM_TEGRA_STAGING 457 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED | DRM_AUTH), 458 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED), 459 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED), 460 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED), 461 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, DRM_UNLOCKED), 462 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, DRM_UNLOCKED), 463 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED), 464 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED), 465 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED), 466 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, DRM_UNLOCKED), 467 #endif 468 }; 469 470 static const struct file_operations tegra_drm_fops = { 471 .owner = THIS_MODULE, 472 .open = drm_open, 473 .release = drm_release, 474 .unlocked_ioctl = drm_ioctl, 475 .mmap = tegra_drm_mmap, 476 .poll = drm_poll, 477 .read = drm_read, 478 #ifdef CONFIG_COMPAT 479 .compat_ioctl = drm_compat_ioctl, 480 #endif 481 .llseek = noop_llseek, 482 }; 483 484 static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe) 485 { 486 struct drm_crtc *crtc; 487 488 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) { 489 struct tegra_dc *dc = to_tegra_dc(crtc); 490 491 if (dc->pipe == pipe) 492 return crtc; 493 } 494 495 return NULL; 496 } 497 498 static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc) 499 { 500 /* TODO: implement real hardware counter using syncpoints */ 501 return drm_vblank_count(dev, crtc); 502 } 503 504 static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe) 505 { 506 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); 507 struct tegra_dc *dc = to_tegra_dc(crtc); 508 509 if (!crtc) 510 return -ENODEV; 511 512 tegra_dc_enable_vblank(dc); 513 514 return 0; 515 } 516 517 static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe) 518 { 519 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); 520 struct tegra_dc *dc = to_tegra_dc(crtc); 521 522 if (crtc) 523 tegra_dc_disable_vblank(dc); 524 } 525 526 static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file) 527 { 528 struct tegra_drm_file *fpriv = file->driver_priv; 529 struct tegra_drm_context *context, *tmp; 530 struct drm_crtc *crtc; 531 532 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) 533 tegra_dc_cancel_page_flip(crtc, file); 534 535 list_for_each_entry_safe(context, tmp, &fpriv->contexts, list) 536 tegra_drm_context_free(context); 537 538 kfree(fpriv); 539 } 540 541 #ifdef CONFIG_DEBUG_FS 542 static int tegra_debugfs_framebuffers(struct seq_file *s, void *data) 543 { 544 struct drm_info_node *node = (struct drm_info_node *)s->private; 545 struct drm_device *drm = node->minor->dev; 546 struct drm_framebuffer *fb; 547 548 mutex_lock(&drm->mode_config.fb_lock); 549 550 list_for_each_entry(fb, &drm->mode_config.fb_list, head) { 551 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n", 552 fb->base.id, fb->width, fb->height, fb->depth, 553 fb->bits_per_pixel, 554 atomic_read(&fb->refcount.refcount)); 555 } 556 557 mutex_unlock(&drm->mode_config.fb_lock); 558 559 return 0; 560 } 561 562 static struct drm_info_list tegra_debugfs_list[] = { 563 { "framebuffers", tegra_debugfs_framebuffers, 0 }, 564 }; 565 566 static int tegra_debugfs_init(struct drm_minor *minor) 567 { 568 return drm_debugfs_create_files(tegra_debugfs_list, 569 ARRAY_SIZE(tegra_debugfs_list), 570 minor->debugfs_root, minor); 571 } 572 573 static void tegra_debugfs_cleanup(struct drm_minor *minor) 574 { 575 drm_debugfs_remove_files(tegra_debugfs_list, 576 ARRAY_SIZE(tegra_debugfs_list), minor); 577 } 578 #endif 579 580 static struct drm_driver tegra_drm_driver = { 581 .driver_features = DRIVER_MODESET | DRIVER_GEM, 582 .load = tegra_drm_load, 583 .unload = tegra_drm_unload, 584 .open = tegra_drm_open, 585 .preclose = tegra_drm_preclose, 586 .lastclose = tegra_drm_lastclose, 587 588 .get_vblank_counter = tegra_drm_get_vblank_counter, 589 .enable_vblank = tegra_drm_enable_vblank, 590 .disable_vblank = tegra_drm_disable_vblank, 591 592 #if defined(CONFIG_DEBUG_FS) 593 .debugfs_init = tegra_debugfs_init, 594 .debugfs_cleanup = tegra_debugfs_cleanup, 595 #endif 596 597 .gem_free_object = tegra_bo_free_object, 598 .gem_vm_ops = &tegra_bo_vm_ops, 599 .dumb_create = tegra_bo_dumb_create, 600 .dumb_map_offset = tegra_bo_dumb_map_offset, 601 .dumb_destroy = drm_gem_dumb_destroy, 602 603 .ioctls = tegra_drm_ioctls, 604 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls), 605 .fops = &tegra_drm_fops, 606 607 .name = DRIVER_NAME, 608 .desc = DRIVER_DESC, 609 .date = DRIVER_DATE, 610 .major = DRIVER_MAJOR, 611 .minor = DRIVER_MINOR, 612 .patchlevel = DRIVER_PATCHLEVEL, 613 }; 614 615 int tegra_drm_register_client(struct tegra_drm *tegra, 616 struct tegra_drm_client *client) 617 { 618 mutex_lock(&tegra->clients_lock); 619 list_add_tail(&client->list, &tegra->clients); 620 mutex_unlock(&tegra->clients_lock); 621 622 return 0; 623 } 624 625 int tegra_drm_unregister_client(struct tegra_drm *tegra, 626 struct tegra_drm_client *client) 627 { 628 mutex_lock(&tegra->clients_lock); 629 list_del_init(&client->list); 630 mutex_unlock(&tegra->clients_lock); 631 632 return 0; 633 } 634 635 static int host1x_drm_probe(struct host1x_device *device) 636 { 637 return drm_host1x_init(&tegra_drm_driver, device); 638 } 639 640 static int host1x_drm_remove(struct host1x_device *device) 641 { 642 drm_host1x_exit(&tegra_drm_driver, device); 643 644 return 0; 645 } 646 647 static const struct of_device_id host1x_drm_subdevs[] = { 648 { .compatible = "nvidia,tegra20-dc", }, 649 { .compatible = "nvidia,tegra20-hdmi", }, 650 { .compatible = "nvidia,tegra20-gr2d", }, 651 { .compatible = "nvidia,tegra20-gr3d", }, 652 { .compatible = "nvidia,tegra30-dc", }, 653 { .compatible = "nvidia,tegra30-hdmi", }, 654 { .compatible = "nvidia,tegra30-gr2d", }, 655 { .compatible = "nvidia,tegra30-gr3d", }, 656 { .compatible = "nvidia,tegra114-hdmi", }, 657 { .compatible = "nvidia,tegra114-gr3d", }, 658 { /* sentinel */ } 659 }; 660 661 static struct host1x_driver host1x_drm_driver = { 662 .name = "drm", 663 .probe = host1x_drm_probe, 664 .remove = host1x_drm_remove, 665 .subdevs = host1x_drm_subdevs, 666 }; 667 668 static int __init host1x_drm_init(void) 669 { 670 int err; 671 672 err = host1x_driver_register(&host1x_drm_driver); 673 if (err < 0) 674 return err; 675 676 err = platform_driver_register(&tegra_dc_driver); 677 if (err < 0) 678 goto unregister_host1x; 679 680 err = platform_driver_register(&tegra_hdmi_driver); 681 if (err < 0) 682 goto unregister_dc; 683 684 err = platform_driver_register(&tegra_gr2d_driver); 685 if (err < 0) 686 goto unregister_hdmi; 687 688 err = platform_driver_register(&tegra_gr3d_driver); 689 if (err < 0) 690 goto unregister_gr2d; 691 692 return 0; 693 694 unregister_gr2d: 695 platform_driver_unregister(&tegra_gr2d_driver); 696 unregister_hdmi: 697 platform_driver_unregister(&tegra_hdmi_driver); 698 unregister_dc: 699 platform_driver_unregister(&tegra_dc_driver); 700 unregister_host1x: 701 host1x_driver_unregister(&host1x_drm_driver); 702 return err; 703 } 704 module_init(host1x_drm_init); 705 706 static void __exit host1x_drm_exit(void) 707 { 708 platform_driver_unregister(&tegra_gr3d_driver); 709 platform_driver_unregister(&tegra_gr2d_driver); 710 platform_driver_unregister(&tegra_hdmi_driver); 711 platform_driver_unregister(&tegra_dc_driver); 712 host1x_driver_unregister(&host1x_drm_driver); 713 } 714 module_exit(host1x_drm_exit); 715 716 MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>"); 717 MODULE_DESCRIPTION("NVIDIA Tegra DRM driver"); 718 MODULE_LICENSE("GPL v2"); 719