1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2015-2018 Etnaviv Project 4 */ 5 6 #include <linux/component.h> 7 #include <linux/dma-mapping.h> 8 #include <linux/module.h> 9 #include <linux/of_platform.h> 10 #include <linux/uaccess.h> 11 12 #include <drm/drm_debugfs.h> 13 #include <drm/drm_drv.h> 14 #include <drm/drm_file.h> 15 #include <drm/drm_ioctl.h> 16 #include <drm/drm_of.h> 17 #include <drm/drm_prime.h> 18 19 #include "etnaviv_cmdbuf.h" 20 #include "etnaviv_drv.h" 21 #include "etnaviv_gpu.h" 22 #include "etnaviv_gem.h" 23 #include "etnaviv_mmu.h" 24 #include "etnaviv_perfmon.h" 25 26 /* 27 * DRM operations: 28 */ 29 30 31 static void load_gpu(struct drm_device *dev) 32 { 33 struct etnaviv_drm_private *priv = dev->dev_private; 34 unsigned int i; 35 36 for (i = 0; i < ETNA_MAX_PIPES; i++) { 37 struct etnaviv_gpu *g = priv->gpu[i]; 38 39 if (g) { 40 int ret; 41 42 ret = etnaviv_gpu_init(g); 43 if (ret) 44 priv->gpu[i] = NULL; 45 } 46 } 47 } 48 49 static int etnaviv_open(struct drm_device *dev, struct drm_file *file) 50 { 51 struct etnaviv_drm_private *priv = dev->dev_private; 52 struct etnaviv_file_private *ctx; 53 int ret, i; 54 55 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 56 if (!ctx) 57 return -ENOMEM; 58 59 ctx->mmu = etnaviv_iommu_context_init(priv->mmu_global, 60 priv->cmdbuf_suballoc); 61 if (!ctx->mmu) { 62 ret = -ENOMEM; 63 goto out_free; 64 } 65 66 for (i = 0; i < ETNA_MAX_PIPES; i++) { 67 struct etnaviv_gpu *gpu = priv->gpu[i]; 68 struct drm_gpu_scheduler *sched; 69 70 if (gpu) { 71 sched = &gpu->sched; 72 drm_sched_entity_init(&ctx->sched_entity[i], 73 DRM_SCHED_PRIORITY_NORMAL, &sched, 74 1, NULL); 75 } 76 } 77 78 file->driver_priv = ctx; 79 80 return 0; 81 82 out_free: 83 kfree(ctx); 84 return ret; 85 } 86 87 static void etnaviv_postclose(struct drm_device *dev, struct drm_file *file) 88 { 89 struct etnaviv_drm_private *priv = dev->dev_private; 90 struct etnaviv_file_private *ctx = file->driver_priv; 91 unsigned int i; 92 93 for (i = 0; i < ETNA_MAX_PIPES; i++) { 94 struct etnaviv_gpu *gpu = priv->gpu[i]; 95 96 if (gpu) 97 drm_sched_entity_destroy(&ctx->sched_entity[i]); 98 } 99 100 etnaviv_iommu_context_put(ctx->mmu); 101 102 kfree(ctx); 103 } 104 105 /* 106 * DRM debugfs: 107 */ 108 109 #ifdef CONFIG_DEBUG_FS 110 static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m) 111 { 112 struct etnaviv_drm_private *priv = dev->dev_private; 113 114 etnaviv_gem_describe_objects(priv, m); 115 116 return 0; 117 } 118 119 static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m) 120 { 121 struct drm_printer p = drm_seq_file_printer(m); 122 123 read_lock(&dev->vma_offset_manager->vm_lock); 124 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p); 125 read_unlock(&dev->vma_offset_manager->vm_lock); 126 127 return 0; 128 } 129 130 static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m) 131 { 132 struct drm_printer p = drm_seq_file_printer(m); 133 struct etnaviv_iommu_context *mmu_context; 134 135 seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev)); 136 137 /* 138 * Lock the GPU to avoid a MMU context switch just now and elevate 139 * the refcount of the current context to avoid it disappearing from 140 * under our feet. 141 */ 142 mutex_lock(&gpu->lock); 143 mmu_context = gpu->mmu_context; 144 if (mmu_context) 145 etnaviv_iommu_context_get(mmu_context); 146 mutex_unlock(&gpu->lock); 147 148 if (!mmu_context) 149 return 0; 150 151 mutex_lock(&mmu_context->lock); 152 drm_mm_print(&mmu_context->mm, &p); 153 mutex_unlock(&mmu_context->lock); 154 155 etnaviv_iommu_context_put(mmu_context); 156 157 return 0; 158 } 159 160 static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m) 161 { 162 struct etnaviv_cmdbuf *buf = &gpu->buffer; 163 u32 size = buf->size; 164 u32 *ptr = buf->vaddr; 165 u32 i; 166 167 seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n", 168 buf->vaddr, (u64)etnaviv_cmdbuf_get_pa(buf), 169 size - buf->user_size); 170 171 for (i = 0; i < size / 4; i++) { 172 if (i && !(i % 4)) 173 seq_puts(m, "\n"); 174 if (i % 4 == 0) 175 seq_printf(m, "\t0x%p: ", ptr + i); 176 seq_printf(m, "%08x ", *(ptr + i)); 177 } 178 seq_puts(m, "\n"); 179 } 180 181 static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m) 182 { 183 seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev)); 184 185 mutex_lock(&gpu->lock); 186 etnaviv_buffer_dump(gpu, m); 187 mutex_unlock(&gpu->lock); 188 189 return 0; 190 } 191 192 static int show_unlocked(struct seq_file *m, void *arg) 193 { 194 struct drm_info_node *node = (struct drm_info_node *) m->private; 195 struct drm_device *dev = node->minor->dev; 196 int (*show)(struct drm_device *dev, struct seq_file *m) = 197 node->info_ent->data; 198 199 return show(dev, m); 200 } 201 202 static int show_each_gpu(struct seq_file *m, void *arg) 203 { 204 struct drm_info_node *node = (struct drm_info_node *) m->private; 205 struct drm_device *dev = node->minor->dev; 206 struct etnaviv_drm_private *priv = dev->dev_private; 207 struct etnaviv_gpu *gpu; 208 int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) = 209 node->info_ent->data; 210 unsigned int i; 211 int ret = 0; 212 213 for (i = 0; i < ETNA_MAX_PIPES; i++) { 214 gpu = priv->gpu[i]; 215 if (!gpu) 216 continue; 217 218 ret = show(gpu, m); 219 if (ret < 0) 220 break; 221 } 222 223 return ret; 224 } 225 226 static struct drm_info_list etnaviv_debugfs_list[] = { 227 {"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs}, 228 {"gem", show_unlocked, 0, etnaviv_gem_show}, 229 { "mm", show_unlocked, 0, etnaviv_mm_show }, 230 {"mmu", show_each_gpu, 0, etnaviv_mmu_show}, 231 {"ring", show_each_gpu, 0, etnaviv_ring_show}, 232 }; 233 234 static void etnaviv_debugfs_init(struct drm_minor *minor) 235 { 236 drm_debugfs_create_files(etnaviv_debugfs_list, 237 ARRAY_SIZE(etnaviv_debugfs_list), 238 minor->debugfs_root, minor); 239 } 240 #endif 241 242 /* 243 * DRM ioctls: 244 */ 245 246 static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data, 247 struct drm_file *file) 248 { 249 struct etnaviv_drm_private *priv = dev->dev_private; 250 struct drm_etnaviv_param *args = data; 251 struct etnaviv_gpu *gpu; 252 253 if (args->pipe >= ETNA_MAX_PIPES) 254 return -EINVAL; 255 256 gpu = priv->gpu[args->pipe]; 257 if (!gpu) 258 return -ENXIO; 259 260 return etnaviv_gpu_get_param(gpu, args->param, &args->value); 261 } 262 263 static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data, 264 struct drm_file *file) 265 { 266 struct drm_etnaviv_gem_new *args = data; 267 268 if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED | 269 ETNA_BO_FORCE_MMU)) 270 return -EINVAL; 271 272 return etnaviv_gem_new_handle(dev, file, args->size, 273 args->flags, &args->handle); 274 } 275 276 static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data, 277 struct drm_file *file) 278 { 279 struct drm_etnaviv_gem_cpu_prep *args = data; 280 struct drm_gem_object *obj; 281 int ret; 282 283 if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC)) 284 return -EINVAL; 285 286 obj = drm_gem_object_lookup(file, args->handle); 287 if (!obj) 288 return -ENOENT; 289 290 ret = etnaviv_gem_cpu_prep(obj, args->op, &args->timeout); 291 292 drm_gem_object_put(obj); 293 294 return ret; 295 } 296 297 static int etnaviv_ioctl_gem_cpu_fini(struct drm_device *dev, void *data, 298 struct drm_file *file) 299 { 300 struct drm_etnaviv_gem_cpu_fini *args = data; 301 struct drm_gem_object *obj; 302 int ret; 303 304 if (args->flags) 305 return -EINVAL; 306 307 obj = drm_gem_object_lookup(file, args->handle); 308 if (!obj) 309 return -ENOENT; 310 311 ret = etnaviv_gem_cpu_fini(obj); 312 313 drm_gem_object_put(obj); 314 315 return ret; 316 } 317 318 static int etnaviv_ioctl_gem_info(struct drm_device *dev, void *data, 319 struct drm_file *file) 320 { 321 struct drm_etnaviv_gem_info *args = data; 322 struct drm_gem_object *obj; 323 int ret; 324 325 if (args->pad) 326 return -EINVAL; 327 328 obj = drm_gem_object_lookup(file, args->handle); 329 if (!obj) 330 return -ENOENT; 331 332 ret = etnaviv_gem_mmap_offset(obj, &args->offset); 333 drm_gem_object_put(obj); 334 335 return ret; 336 } 337 338 static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data, 339 struct drm_file *file) 340 { 341 struct drm_etnaviv_wait_fence *args = data; 342 struct etnaviv_drm_private *priv = dev->dev_private; 343 struct drm_etnaviv_timespec *timeout = &args->timeout; 344 struct etnaviv_gpu *gpu; 345 346 if (args->flags & ~(ETNA_WAIT_NONBLOCK)) 347 return -EINVAL; 348 349 if (args->pipe >= ETNA_MAX_PIPES) 350 return -EINVAL; 351 352 gpu = priv->gpu[args->pipe]; 353 if (!gpu) 354 return -ENXIO; 355 356 if (args->flags & ETNA_WAIT_NONBLOCK) 357 timeout = NULL; 358 359 return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence, 360 timeout); 361 } 362 363 static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data, 364 struct drm_file *file) 365 { 366 struct drm_etnaviv_gem_userptr *args = data; 367 368 if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) || 369 args->flags == 0) 370 return -EINVAL; 371 372 if (offset_in_page(args->user_ptr | args->user_size) || 373 (uintptr_t)args->user_ptr != args->user_ptr || 374 (u32)args->user_size != args->user_size || 375 args->user_ptr & ~PAGE_MASK) 376 return -EINVAL; 377 378 if (!access_ok((void __user *)(unsigned long)args->user_ptr, 379 args->user_size)) 380 return -EFAULT; 381 382 return etnaviv_gem_new_userptr(dev, file, args->user_ptr, 383 args->user_size, args->flags, 384 &args->handle); 385 } 386 387 static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data, 388 struct drm_file *file) 389 { 390 struct etnaviv_drm_private *priv = dev->dev_private; 391 struct drm_etnaviv_gem_wait *args = data; 392 struct drm_etnaviv_timespec *timeout = &args->timeout; 393 struct drm_gem_object *obj; 394 struct etnaviv_gpu *gpu; 395 int ret; 396 397 if (args->flags & ~(ETNA_WAIT_NONBLOCK)) 398 return -EINVAL; 399 400 if (args->pipe >= ETNA_MAX_PIPES) 401 return -EINVAL; 402 403 gpu = priv->gpu[args->pipe]; 404 if (!gpu) 405 return -ENXIO; 406 407 obj = drm_gem_object_lookup(file, args->handle); 408 if (!obj) 409 return -ENOENT; 410 411 if (args->flags & ETNA_WAIT_NONBLOCK) 412 timeout = NULL; 413 414 ret = etnaviv_gem_wait_bo(gpu, obj, timeout); 415 416 drm_gem_object_put(obj); 417 418 return ret; 419 } 420 421 static int etnaviv_ioctl_pm_query_dom(struct drm_device *dev, void *data, 422 struct drm_file *file) 423 { 424 struct etnaviv_drm_private *priv = dev->dev_private; 425 struct drm_etnaviv_pm_domain *args = data; 426 struct etnaviv_gpu *gpu; 427 428 if (args->pipe >= ETNA_MAX_PIPES) 429 return -EINVAL; 430 431 gpu = priv->gpu[args->pipe]; 432 if (!gpu) 433 return -ENXIO; 434 435 return etnaviv_pm_query_dom(gpu, args); 436 } 437 438 static int etnaviv_ioctl_pm_query_sig(struct drm_device *dev, void *data, 439 struct drm_file *file) 440 { 441 struct etnaviv_drm_private *priv = dev->dev_private; 442 struct drm_etnaviv_pm_signal *args = data; 443 struct etnaviv_gpu *gpu; 444 445 if (args->pipe >= ETNA_MAX_PIPES) 446 return -EINVAL; 447 448 gpu = priv->gpu[args->pipe]; 449 if (!gpu) 450 return -ENXIO; 451 452 return etnaviv_pm_query_sig(gpu, args); 453 } 454 455 static const struct drm_ioctl_desc etnaviv_ioctls[] = { 456 #define ETNA_IOCTL(n, func, flags) \ 457 DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags) 458 ETNA_IOCTL(GET_PARAM, get_param, DRM_RENDER_ALLOW), 459 ETNA_IOCTL(GEM_NEW, gem_new, DRM_RENDER_ALLOW), 460 ETNA_IOCTL(GEM_INFO, gem_info, DRM_RENDER_ALLOW), 461 ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_RENDER_ALLOW), 462 ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_RENDER_ALLOW), 463 ETNA_IOCTL(GEM_SUBMIT, gem_submit, DRM_RENDER_ALLOW), 464 ETNA_IOCTL(WAIT_FENCE, wait_fence, DRM_RENDER_ALLOW), 465 ETNA_IOCTL(GEM_USERPTR, gem_userptr, DRM_RENDER_ALLOW), 466 ETNA_IOCTL(GEM_WAIT, gem_wait, DRM_RENDER_ALLOW), 467 ETNA_IOCTL(PM_QUERY_DOM, pm_query_dom, DRM_RENDER_ALLOW), 468 ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW), 469 }; 470 471 DEFINE_DRM_GEM_FOPS(fops); 472 473 static const struct drm_driver etnaviv_drm_driver = { 474 .driver_features = DRIVER_GEM | DRIVER_RENDER, 475 .open = etnaviv_open, 476 .postclose = etnaviv_postclose, 477 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 478 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 479 .gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table, 480 .gem_prime_mmap = drm_gem_prime_mmap, 481 #ifdef CONFIG_DEBUG_FS 482 .debugfs_init = etnaviv_debugfs_init, 483 #endif 484 .ioctls = etnaviv_ioctls, 485 .num_ioctls = DRM_ETNAVIV_NUM_IOCTLS, 486 .fops = &fops, 487 .name = "etnaviv", 488 .desc = "etnaviv DRM", 489 .date = "20151214", 490 .major = 1, 491 .minor = 3, 492 }; 493 494 /* 495 * Platform driver: 496 */ 497 static int etnaviv_bind(struct device *dev) 498 { 499 struct etnaviv_drm_private *priv; 500 struct drm_device *drm; 501 int ret; 502 503 drm = drm_dev_alloc(&etnaviv_drm_driver, dev); 504 if (IS_ERR(drm)) 505 return PTR_ERR(drm); 506 507 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 508 if (!priv) { 509 dev_err(dev, "failed to allocate private data\n"); 510 ret = -ENOMEM; 511 goto out_put; 512 } 513 drm->dev_private = priv; 514 515 dma_set_max_seg_size(dev, SZ_2G); 516 517 mutex_init(&priv->gem_lock); 518 INIT_LIST_HEAD(&priv->gem_list); 519 priv->num_gpus = 0; 520 priv->shm_gfp_mask = GFP_HIGHUSER | __GFP_RETRY_MAYFAIL | __GFP_NOWARN; 521 522 priv->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(drm->dev); 523 if (IS_ERR(priv->cmdbuf_suballoc)) { 524 dev_err(drm->dev, "Failed to create cmdbuf suballocator\n"); 525 ret = PTR_ERR(priv->cmdbuf_suballoc); 526 goto out_free_priv; 527 } 528 529 dev_set_drvdata(dev, drm); 530 531 ret = component_bind_all(dev, drm); 532 if (ret < 0) 533 goto out_destroy_suballoc; 534 535 load_gpu(drm); 536 537 ret = drm_dev_register(drm, 0); 538 if (ret) 539 goto out_unbind; 540 541 return 0; 542 543 out_unbind: 544 component_unbind_all(dev, drm); 545 out_destroy_suballoc: 546 etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc); 547 out_free_priv: 548 kfree(priv); 549 out_put: 550 drm_dev_put(drm); 551 552 return ret; 553 } 554 555 static void etnaviv_unbind(struct device *dev) 556 { 557 struct drm_device *drm = dev_get_drvdata(dev); 558 struct etnaviv_drm_private *priv = drm->dev_private; 559 560 drm_dev_unregister(drm); 561 562 component_unbind_all(dev, drm); 563 564 etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc); 565 566 drm->dev_private = NULL; 567 kfree(priv); 568 569 drm_dev_put(drm); 570 } 571 572 static const struct component_master_ops etnaviv_master_ops = { 573 .bind = etnaviv_bind, 574 .unbind = etnaviv_unbind, 575 }; 576 577 static int compare_of(struct device *dev, void *data) 578 { 579 struct device_node *np = data; 580 581 return dev->of_node == np; 582 } 583 584 static int compare_str(struct device *dev, void *data) 585 { 586 return !strcmp(dev_name(dev), data); 587 } 588 589 static int etnaviv_pdev_probe(struct platform_device *pdev) 590 { 591 struct device *dev = &pdev->dev; 592 struct device_node *first_node = NULL; 593 struct component_match *match = NULL; 594 595 if (!dev->platform_data) { 596 struct device_node *core_node; 597 598 for_each_compatible_node(core_node, NULL, "vivante,gc") { 599 if (!of_device_is_available(core_node)) 600 continue; 601 602 if (!first_node) 603 first_node = core_node; 604 605 drm_of_component_match_add(&pdev->dev, &match, 606 compare_of, core_node); 607 } 608 } else { 609 char **names = dev->platform_data; 610 unsigned i; 611 612 for (i = 0; names[i]; i++) 613 component_match_add(dev, &match, compare_str, names[i]); 614 } 615 616 /* 617 * PTA and MTLB can have 40 bit base addresses, but 618 * unfortunately, an entry in the MTLB can only point to a 619 * 32 bit base address of a STLB. Moreover, to initialize the 620 * MMU we need a command buffer with a 32 bit address because 621 * without an MMU there is only an indentity mapping between 622 * the internal 32 bit addresses and the bus addresses. 623 * 624 * To make things easy, we set the dma_coherent_mask to 32 625 * bit to make sure we are allocating the command buffers and 626 * TLBs in the lower 4 GiB address space. 627 */ 628 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(40)) || 629 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32))) { 630 dev_dbg(&pdev->dev, "No suitable DMA available\n"); 631 return -ENODEV; 632 } 633 634 /* 635 * Apply the same DMA configuration to the virtual etnaviv 636 * device as the GPU we found. This assumes that all Vivante 637 * GPUs in the system share the same DMA constraints. 638 */ 639 if (first_node) 640 of_dma_configure(&pdev->dev, first_node, true); 641 642 return component_master_add_with_match(dev, &etnaviv_master_ops, match); 643 } 644 645 static int etnaviv_pdev_remove(struct platform_device *pdev) 646 { 647 component_master_del(&pdev->dev, &etnaviv_master_ops); 648 649 return 0; 650 } 651 652 static struct platform_driver etnaviv_platform_driver = { 653 .probe = etnaviv_pdev_probe, 654 .remove = etnaviv_pdev_remove, 655 .driver = { 656 .name = "etnaviv", 657 }, 658 }; 659 660 static struct platform_device *etnaviv_drm; 661 662 static int __init etnaviv_init(void) 663 { 664 struct platform_device *pdev; 665 int ret; 666 struct device_node *np; 667 668 etnaviv_validate_init(); 669 670 ret = platform_driver_register(&etnaviv_gpu_driver); 671 if (ret != 0) 672 return ret; 673 674 ret = platform_driver_register(&etnaviv_platform_driver); 675 if (ret != 0) 676 goto unregister_gpu_driver; 677 678 /* 679 * If the DT contains at least one available GPU device, instantiate 680 * the DRM platform device. 681 */ 682 for_each_compatible_node(np, NULL, "vivante,gc") { 683 if (!of_device_is_available(np)) 684 continue; 685 686 pdev = platform_device_alloc("etnaviv", PLATFORM_DEVID_NONE); 687 if (!pdev) { 688 ret = -ENOMEM; 689 of_node_put(np); 690 goto unregister_platform_driver; 691 } 692 693 ret = platform_device_add(pdev); 694 if (ret) { 695 platform_device_put(pdev); 696 of_node_put(np); 697 goto unregister_platform_driver; 698 } 699 700 etnaviv_drm = pdev; 701 of_node_put(np); 702 break; 703 } 704 705 return 0; 706 707 unregister_platform_driver: 708 platform_driver_unregister(&etnaviv_platform_driver); 709 unregister_gpu_driver: 710 platform_driver_unregister(&etnaviv_gpu_driver); 711 return ret; 712 } 713 module_init(etnaviv_init); 714 715 static void __exit etnaviv_exit(void) 716 { 717 platform_device_unregister(etnaviv_drm); 718 platform_driver_unregister(&etnaviv_platform_driver); 719 platform_driver_unregister(&etnaviv_gpu_driver); 720 } 721 module_exit(etnaviv_exit); 722 723 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>"); 724 MODULE_AUTHOR("Russell King <rmk+kernel@armlinux.org.uk>"); 725 MODULE_AUTHOR("Lucas Stach <l.stach@pengutronix.de>"); 726 MODULE_DESCRIPTION("etnaviv DRM Driver"); 727 MODULE_LICENSE("GPL v2"); 728 MODULE_ALIAS("platform:etnaviv"); 729