1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */ 3 /* Copyright 2019 Linaro, Ltd., Rob Herring <robh@kernel.org> */ 4 /* Copyright 2019 Collabora ltd. */ 5 6 #include <linux/module.h> 7 #include <linux/of_platform.h> 8 #include <linux/pagemap.h> 9 #include <linux/pm_runtime.h> 10 #include <drm/panfrost_drm.h> 11 #include <drm/drm_drv.h> 12 #include <drm/drm_ioctl.h> 13 #include <drm/drm_syncobj.h> 14 #include <drm/drm_utils.h> 15 16 #include "panfrost_device.h" 17 #include "panfrost_devfreq.h" 18 #include "panfrost_gem.h" 19 #include "panfrost_mmu.h" 20 #include "panfrost_job.h" 21 #include "panfrost_gpu.h" 22 #include "panfrost_perfcnt.h" 23 24 static bool unstable_ioctls; 25 module_param_unsafe(unstable_ioctls, bool, 0600); 26 27 static int panfrost_ioctl_get_param(struct drm_device *ddev, void *data, struct drm_file *file) 28 { 29 struct drm_panfrost_get_param *param = data; 30 struct panfrost_device *pfdev = ddev->dev_private; 31 32 if (param->pad != 0) 33 return -EINVAL; 34 35 #define PANFROST_FEATURE(name, member) \ 36 case DRM_PANFROST_PARAM_ ## name: \ 37 param->value = pfdev->features.member; \ 38 break 39 #define PANFROST_FEATURE_ARRAY(name, member, max) \ 40 case DRM_PANFROST_PARAM_ ## name ## 0 ... \ 41 DRM_PANFROST_PARAM_ ## name ## max: \ 42 param->value = pfdev->features.member[param->param - \ 43 DRM_PANFROST_PARAM_ ## name ## 0]; \ 44 break 45 46 switch (param->param) { 47 PANFROST_FEATURE(GPU_PROD_ID, id); 48 PANFROST_FEATURE(GPU_REVISION, revision); 49 PANFROST_FEATURE(SHADER_PRESENT, shader_present); 50 PANFROST_FEATURE(TILER_PRESENT, tiler_present); 51 PANFROST_FEATURE(L2_PRESENT, l2_present); 52 PANFROST_FEATURE(STACK_PRESENT, stack_present); 53 PANFROST_FEATURE(AS_PRESENT, as_present); 54 PANFROST_FEATURE(JS_PRESENT, js_present); 55 PANFROST_FEATURE(L2_FEATURES, l2_features); 56 PANFROST_FEATURE(CORE_FEATURES, core_features); 57 PANFROST_FEATURE(TILER_FEATURES, tiler_features); 58 PANFROST_FEATURE(MEM_FEATURES, mem_features); 59 PANFROST_FEATURE(MMU_FEATURES, mmu_features); 60 PANFROST_FEATURE(THREAD_FEATURES, thread_features); 61 PANFROST_FEATURE(MAX_THREADS, max_threads); 62 PANFROST_FEATURE(THREAD_MAX_WORKGROUP_SZ, 63 thread_max_workgroup_sz); 64 PANFROST_FEATURE(THREAD_MAX_BARRIER_SZ, 65 thread_max_barrier_sz); 66 PANFROST_FEATURE(COHERENCY_FEATURES, coherency_features); 67 PANFROST_FEATURE_ARRAY(TEXTURE_FEATURES, texture_features, 3); 68 PANFROST_FEATURE_ARRAY(JS_FEATURES, js_features, 15); 69 PANFROST_FEATURE(NR_CORE_GROUPS, nr_core_groups); 70 PANFROST_FEATURE(THREAD_TLS_ALLOC, thread_tls_alloc); 71 default: 72 return -EINVAL; 73 } 74 75 return 0; 76 } 77 78 static int panfrost_ioctl_create_bo(struct drm_device *dev, void *data, 79 struct drm_file *file) 80 { 81 struct panfrost_file_priv *priv = file->driver_priv; 82 struct panfrost_gem_object *bo; 83 struct drm_panfrost_create_bo *args = data; 84 struct panfrost_gem_mapping *mapping; 85 86 if (!args->size || args->pad || 87 (args->flags & ~(PANFROST_BO_NOEXEC | PANFROST_BO_HEAP))) 88 return -EINVAL; 89 90 /* Heaps should never be executable */ 91 if ((args->flags & PANFROST_BO_HEAP) && 92 !(args->flags & PANFROST_BO_NOEXEC)) 93 return -EINVAL; 94 95 bo = panfrost_gem_create_with_handle(file, dev, args->size, args->flags, 96 &args->handle); 97 if (IS_ERR(bo)) 98 return PTR_ERR(bo); 99 100 mapping = panfrost_gem_mapping_get(bo, priv); 101 if (!mapping) { 102 drm_gem_object_put_unlocked(&bo->base.base); 103 return -EINVAL; 104 } 105 106 args->offset = mapping->mmnode.start << PAGE_SHIFT; 107 panfrost_gem_mapping_put(mapping); 108 109 return 0; 110 } 111 112 /** 113 * panfrost_lookup_bos() - Sets up job->bo[] with the GEM objects 114 * referenced by the job. 115 * @dev: DRM device 116 * @file_priv: DRM file for this fd 117 * @args: IOCTL args 118 * @job: job being set up 119 * 120 * Resolve handles from userspace to BOs and attach them to job. 121 * 122 * Note that this function doesn't need to unreference the BOs on 123 * failure, because that will happen at panfrost_job_cleanup() time. 124 */ 125 static int 126 panfrost_lookup_bos(struct drm_device *dev, 127 struct drm_file *file_priv, 128 struct drm_panfrost_submit *args, 129 struct panfrost_job *job) 130 { 131 struct panfrost_file_priv *priv = file_priv->driver_priv; 132 struct panfrost_gem_object *bo; 133 unsigned int i; 134 int ret; 135 136 job->bo_count = args->bo_handle_count; 137 138 if (!job->bo_count) 139 return 0; 140 141 job->implicit_fences = kvmalloc_array(job->bo_count, 142 sizeof(struct dma_fence *), 143 GFP_KERNEL | __GFP_ZERO); 144 if (!job->implicit_fences) 145 return -ENOMEM; 146 147 ret = drm_gem_objects_lookup(file_priv, 148 (void __user *)(uintptr_t)args->bo_handles, 149 job->bo_count, &job->bos); 150 if (ret) 151 return ret; 152 153 job->mappings = kvmalloc_array(job->bo_count, 154 sizeof(struct panfrost_gem_mapping *), 155 GFP_KERNEL | __GFP_ZERO); 156 if (!job->mappings) 157 return -ENOMEM; 158 159 for (i = 0; i < job->bo_count; i++) { 160 struct panfrost_gem_mapping *mapping; 161 162 bo = to_panfrost_bo(job->bos[i]); 163 mapping = panfrost_gem_mapping_get(bo, priv); 164 if (!mapping) { 165 ret = -EINVAL; 166 break; 167 } 168 169 atomic_inc(&bo->gpu_usecount); 170 job->mappings[i] = mapping; 171 } 172 173 return ret; 174 } 175 176 /** 177 * panfrost_copy_in_sync() - Sets up job->in_fences[] with the sync objects 178 * referenced by the job. 179 * @dev: DRM device 180 * @file_priv: DRM file for this fd 181 * @args: IOCTL args 182 * @job: job being set up 183 * 184 * Resolve syncobjs from userspace to fences and attach them to job. 185 * 186 * Note that this function doesn't need to unreference the fences on 187 * failure, because that will happen at panfrost_job_cleanup() time. 188 */ 189 static int 190 panfrost_copy_in_sync(struct drm_device *dev, 191 struct drm_file *file_priv, 192 struct drm_panfrost_submit *args, 193 struct panfrost_job *job) 194 { 195 u32 *handles; 196 int ret = 0; 197 int i; 198 199 job->in_fence_count = args->in_sync_count; 200 201 if (!job->in_fence_count) 202 return 0; 203 204 job->in_fences = kvmalloc_array(job->in_fence_count, 205 sizeof(struct dma_fence *), 206 GFP_KERNEL | __GFP_ZERO); 207 if (!job->in_fences) { 208 DRM_DEBUG("Failed to allocate job in fences\n"); 209 return -ENOMEM; 210 } 211 212 handles = kvmalloc_array(job->in_fence_count, sizeof(u32), GFP_KERNEL); 213 if (!handles) { 214 ret = -ENOMEM; 215 DRM_DEBUG("Failed to allocate incoming syncobj handles\n"); 216 goto fail; 217 } 218 219 if (copy_from_user(handles, 220 (void __user *)(uintptr_t)args->in_syncs, 221 job->in_fence_count * sizeof(u32))) { 222 ret = -EFAULT; 223 DRM_DEBUG("Failed to copy in syncobj handles\n"); 224 goto fail; 225 } 226 227 for (i = 0; i < job->in_fence_count; i++) { 228 ret = drm_syncobj_find_fence(file_priv, handles[i], 0, 0, 229 &job->in_fences[i]); 230 if (ret == -EINVAL) 231 goto fail; 232 } 233 234 fail: 235 kvfree(handles); 236 return ret; 237 } 238 239 static int panfrost_ioctl_submit(struct drm_device *dev, void *data, 240 struct drm_file *file) 241 { 242 struct panfrost_device *pfdev = dev->dev_private; 243 struct drm_panfrost_submit *args = data; 244 struct drm_syncobj *sync_out = NULL; 245 struct panfrost_job *job; 246 int ret = 0; 247 248 if (!args->jc) 249 return -EINVAL; 250 251 if (args->requirements && args->requirements != PANFROST_JD_REQ_FS) 252 return -EINVAL; 253 254 if (args->out_sync > 0) { 255 sync_out = drm_syncobj_find(file, args->out_sync); 256 if (!sync_out) 257 return -ENODEV; 258 } 259 260 job = kzalloc(sizeof(*job), GFP_KERNEL); 261 if (!job) { 262 ret = -ENOMEM; 263 goto fail_out_sync; 264 } 265 266 kref_init(&job->refcount); 267 268 job->pfdev = pfdev; 269 job->jc = args->jc; 270 job->requirements = args->requirements; 271 job->flush_id = panfrost_gpu_get_latest_flush_id(pfdev); 272 job->file_priv = file->driver_priv; 273 274 ret = panfrost_copy_in_sync(dev, file, args, job); 275 if (ret) 276 goto fail_job; 277 278 ret = panfrost_lookup_bos(dev, file, args, job); 279 if (ret) 280 goto fail_job; 281 282 ret = panfrost_job_push(job); 283 if (ret) 284 goto fail_job; 285 286 /* Update the return sync object for the job */ 287 if (sync_out) 288 drm_syncobj_replace_fence(sync_out, job->render_done_fence); 289 290 fail_job: 291 panfrost_job_put(job); 292 fail_out_sync: 293 if (sync_out) 294 drm_syncobj_put(sync_out); 295 296 return ret; 297 } 298 299 static int 300 panfrost_ioctl_wait_bo(struct drm_device *dev, void *data, 301 struct drm_file *file_priv) 302 { 303 long ret; 304 struct drm_panfrost_wait_bo *args = data; 305 struct drm_gem_object *gem_obj; 306 unsigned long timeout = drm_timeout_abs_to_jiffies(args->timeout_ns); 307 308 if (args->pad) 309 return -EINVAL; 310 311 gem_obj = drm_gem_object_lookup(file_priv, args->handle); 312 if (!gem_obj) 313 return -ENOENT; 314 315 ret = dma_resv_wait_timeout_rcu(gem_obj->resv, true, 316 true, timeout); 317 if (!ret) 318 ret = timeout ? -ETIMEDOUT : -EBUSY; 319 320 drm_gem_object_put_unlocked(gem_obj); 321 322 return ret; 323 } 324 325 static int panfrost_ioctl_mmap_bo(struct drm_device *dev, void *data, 326 struct drm_file *file_priv) 327 { 328 struct drm_panfrost_mmap_bo *args = data; 329 struct drm_gem_object *gem_obj; 330 int ret; 331 332 if (args->flags != 0) { 333 DRM_INFO("unknown mmap_bo flags: %d\n", args->flags); 334 return -EINVAL; 335 } 336 337 gem_obj = drm_gem_object_lookup(file_priv, args->handle); 338 if (!gem_obj) { 339 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); 340 return -ENOENT; 341 } 342 343 /* Don't allow mmapping of heap objects as pages are not pinned. */ 344 if (to_panfrost_bo(gem_obj)->is_heap) { 345 ret = -EINVAL; 346 goto out; 347 } 348 349 ret = drm_gem_create_mmap_offset(gem_obj); 350 if (ret == 0) 351 args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node); 352 353 out: 354 drm_gem_object_put_unlocked(gem_obj); 355 return ret; 356 } 357 358 static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data, 359 struct drm_file *file_priv) 360 { 361 struct panfrost_file_priv *priv = file_priv->driver_priv; 362 struct drm_panfrost_get_bo_offset *args = data; 363 struct panfrost_gem_mapping *mapping; 364 struct drm_gem_object *gem_obj; 365 struct panfrost_gem_object *bo; 366 367 gem_obj = drm_gem_object_lookup(file_priv, args->handle); 368 if (!gem_obj) { 369 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); 370 return -ENOENT; 371 } 372 bo = to_panfrost_bo(gem_obj); 373 374 mapping = panfrost_gem_mapping_get(bo, priv); 375 drm_gem_object_put_unlocked(gem_obj); 376 377 if (!mapping) 378 return -EINVAL; 379 380 args->offset = mapping->mmnode.start << PAGE_SHIFT; 381 panfrost_gem_mapping_put(mapping); 382 return 0; 383 } 384 385 static int panfrost_ioctl_madvise(struct drm_device *dev, void *data, 386 struct drm_file *file_priv) 387 { 388 struct panfrost_file_priv *priv = file_priv->driver_priv; 389 struct drm_panfrost_madvise *args = data; 390 struct panfrost_device *pfdev = dev->dev_private; 391 struct drm_gem_object *gem_obj; 392 struct panfrost_gem_object *bo; 393 int ret = 0; 394 395 gem_obj = drm_gem_object_lookup(file_priv, args->handle); 396 if (!gem_obj) { 397 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); 398 return -ENOENT; 399 } 400 401 bo = to_panfrost_bo(gem_obj); 402 403 mutex_lock(&pfdev->shrinker_lock); 404 mutex_lock(&bo->mappings.lock); 405 if (args->madv == PANFROST_MADV_DONTNEED) { 406 struct panfrost_gem_mapping *first; 407 408 first = list_first_entry(&bo->mappings.list, 409 struct panfrost_gem_mapping, 410 node); 411 412 /* 413 * If we want to mark the BO purgeable, there must be only one 414 * user: the caller FD. 415 * We could do something smarter and mark the BO purgeable only 416 * when all its users have marked it purgeable, but globally 417 * visible/shared BOs are likely to never be marked purgeable 418 * anyway, so let's not bother. 419 */ 420 if (!list_is_singular(&bo->mappings.list) || 421 WARN_ON_ONCE(first->mmu != &priv->mmu)) { 422 ret = -EINVAL; 423 goto out_unlock_mappings; 424 } 425 } 426 427 args->retained = drm_gem_shmem_madvise(gem_obj, args->madv); 428 429 if (args->retained) { 430 if (args->madv == PANFROST_MADV_DONTNEED) 431 list_add_tail(&bo->base.madv_list, 432 &pfdev->shrinker_list); 433 else if (args->madv == PANFROST_MADV_WILLNEED) 434 list_del_init(&bo->base.madv_list); 435 } 436 437 out_unlock_mappings: 438 mutex_unlock(&bo->mappings.lock); 439 mutex_unlock(&pfdev->shrinker_lock); 440 441 drm_gem_object_put_unlocked(gem_obj); 442 return ret; 443 } 444 445 int panfrost_unstable_ioctl_check(void) 446 { 447 if (!unstable_ioctls) 448 return -ENOSYS; 449 450 return 0; 451 } 452 453 #define PFN_4G (SZ_4G >> PAGE_SHIFT) 454 #define PFN_4G_MASK (PFN_4G - 1) 455 #define PFN_16M (SZ_16M >> PAGE_SHIFT) 456 457 static void panfrost_drm_mm_color_adjust(const struct drm_mm_node *node, 458 unsigned long color, 459 u64 *start, u64 *end) 460 { 461 /* Executable buffers can't start or end on a 4GB boundary */ 462 if (!(color & PANFROST_BO_NOEXEC)) { 463 u64 next_seg; 464 465 if ((*start & PFN_4G_MASK) == 0) 466 (*start)++; 467 468 if ((*end & PFN_4G_MASK) == 0) 469 (*end)--; 470 471 next_seg = ALIGN(*start, PFN_4G); 472 if (next_seg - *start <= PFN_16M) 473 *start = next_seg + 1; 474 475 *end = min(*end, ALIGN(*start, PFN_4G) - 1); 476 } 477 } 478 479 static int 480 panfrost_open(struct drm_device *dev, struct drm_file *file) 481 { 482 int ret; 483 struct panfrost_device *pfdev = dev->dev_private; 484 struct panfrost_file_priv *panfrost_priv; 485 486 panfrost_priv = kzalloc(sizeof(*panfrost_priv), GFP_KERNEL); 487 if (!panfrost_priv) 488 return -ENOMEM; 489 490 panfrost_priv->pfdev = pfdev; 491 file->driver_priv = panfrost_priv; 492 493 spin_lock_init(&panfrost_priv->mm_lock); 494 495 /* 4G enough for now. can be 48-bit */ 496 drm_mm_init(&panfrost_priv->mm, SZ_32M >> PAGE_SHIFT, (SZ_4G - SZ_32M) >> PAGE_SHIFT); 497 panfrost_priv->mm.color_adjust = panfrost_drm_mm_color_adjust; 498 499 ret = panfrost_mmu_pgtable_alloc(panfrost_priv); 500 if (ret) 501 goto err_pgtable; 502 503 ret = panfrost_job_open(panfrost_priv); 504 if (ret) 505 goto err_job; 506 507 return 0; 508 509 err_job: 510 panfrost_mmu_pgtable_free(panfrost_priv); 511 err_pgtable: 512 drm_mm_takedown(&panfrost_priv->mm); 513 kfree(panfrost_priv); 514 return ret; 515 } 516 517 static void 518 panfrost_postclose(struct drm_device *dev, struct drm_file *file) 519 { 520 struct panfrost_file_priv *panfrost_priv = file->driver_priv; 521 522 panfrost_perfcnt_close(file); 523 panfrost_job_close(panfrost_priv); 524 525 panfrost_mmu_pgtable_free(panfrost_priv); 526 drm_mm_takedown(&panfrost_priv->mm); 527 kfree(panfrost_priv); 528 } 529 530 static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = { 531 #define PANFROST_IOCTL(n, func, flags) \ 532 DRM_IOCTL_DEF_DRV(PANFROST_##n, panfrost_ioctl_##func, flags) 533 534 PANFROST_IOCTL(SUBMIT, submit, DRM_RENDER_ALLOW), 535 PANFROST_IOCTL(WAIT_BO, wait_bo, DRM_RENDER_ALLOW), 536 PANFROST_IOCTL(CREATE_BO, create_bo, DRM_RENDER_ALLOW), 537 PANFROST_IOCTL(MMAP_BO, mmap_bo, DRM_RENDER_ALLOW), 538 PANFROST_IOCTL(GET_PARAM, get_param, DRM_RENDER_ALLOW), 539 PANFROST_IOCTL(GET_BO_OFFSET, get_bo_offset, DRM_RENDER_ALLOW), 540 PANFROST_IOCTL(PERFCNT_ENABLE, perfcnt_enable, DRM_RENDER_ALLOW), 541 PANFROST_IOCTL(PERFCNT_DUMP, perfcnt_dump, DRM_RENDER_ALLOW), 542 PANFROST_IOCTL(MADVISE, madvise, DRM_RENDER_ALLOW), 543 }; 544 545 DEFINE_DRM_GEM_FOPS(panfrost_drm_driver_fops); 546 547 /* 548 * Panfrost driver version: 549 * - 1.0 - initial interface 550 * - 1.1 - adds HEAP and NOEXEC flags for CREATE_BO 551 */ 552 static struct drm_driver panfrost_drm_driver = { 553 .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ, 554 .open = panfrost_open, 555 .postclose = panfrost_postclose, 556 .ioctls = panfrost_drm_driver_ioctls, 557 .num_ioctls = ARRAY_SIZE(panfrost_drm_driver_ioctls), 558 .fops = &panfrost_drm_driver_fops, 559 .name = "panfrost", 560 .desc = "panfrost DRM", 561 .date = "20180908", 562 .major = 1, 563 .minor = 1, 564 565 .gem_create_object = panfrost_gem_create_object, 566 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 567 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 568 .gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table, 569 .gem_prime_mmap = drm_gem_prime_mmap, 570 }; 571 572 static int panfrost_probe(struct platform_device *pdev) 573 { 574 struct panfrost_device *pfdev; 575 struct drm_device *ddev; 576 int err; 577 578 pfdev = devm_kzalloc(&pdev->dev, sizeof(*pfdev), GFP_KERNEL); 579 if (!pfdev) 580 return -ENOMEM; 581 582 pfdev->pdev = pdev; 583 pfdev->dev = &pdev->dev; 584 585 platform_set_drvdata(pdev, pfdev); 586 587 pfdev->comp = of_device_get_match_data(&pdev->dev); 588 if (!pfdev->comp) 589 return -ENODEV; 590 591 /* Allocate and initialze the DRM device. */ 592 ddev = drm_dev_alloc(&panfrost_drm_driver, &pdev->dev); 593 if (IS_ERR(ddev)) 594 return PTR_ERR(ddev); 595 596 ddev->dev_private = pfdev; 597 pfdev->ddev = ddev; 598 599 mutex_init(&pfdev->shrinker_lock); 600 INIT_LIST_HEAD(&pfdev->shrinker_list); 601 602 err = panfrost_device_init(pfdev); 603 if (err) { 604 if (err != -EPROBE_DEFER) 605 dev_err(&pdev->dev, "Fatal error during GPU init\n"); 606 goto err_out0; 607 } 608 609 err = panfrost_devfreq_init(pfdev); 610 if (err) { 611 if (err != -EPROBE_DEFER) 612 dev_err(&pdev->dev, "Fatal error during devfreq init\n"); 613 goto err_out1; 614 } 615 616 pm_runtime_set_active(pfdev->dev); 617 pm_runtime_mark_last_busy(pfdev->dev); 618 pm_runtime_enable(pfdev->dev); 619 pm_runtime_set_autosuspend_delay(pfdev->dev, 50); /* ~3 frames */ 620 pm_runtime_use_autosuspend(pfdev->dev); 621 622 /* 623 * Register the DRM device with the core and the connectors with 624 * sysfs 625 */ 626 err = drm_dev_register(ddev, 0); 627 if (err < 0) 628 goto err_out2; 629 630 panfrost_gem_shrinker_init(ddev); 631 632 return 0; 633 634 err_out2: 635 pm_runtime_disable(pfdev->dev); 636 panfrost_devfreq_fini(pfdev); 637 err_out1: 638 panfrost_device_fini(pfdev); 639 err_out0: 640 drm_dev_put(ddev); 641 return err; 642 } 643 644 static int panfrost_remove(struct platform_device *pdev) 645 { 646 struct panfrost_device *pfdev = platform_get_drvdata(pdev); 647 struct drm_device *ddev = pfdev->ddev; 648 649 drm_dev_unregister(ddev); 650 panfrost_gem_shrinker_cleanup(ddev); 651 652 pm_runtime_get_sync(pfdev->dev); 653 panfrost_devfreq_fini(pfdev); 654 panfrost_device_fini(pfdev); 655 pm_runtime_put_sync_suspend(pfdev->dev); 656 pm_runtime_disable(pfdev->dev); 657 658 drm_dev_put(ddev); 659 return 0; 660 } 661 662 static const char * const default_supplies[] = { "mali" }; 663 static const struct panfrost_compatible default_data = { 664 .num_supplies = ARRAY_SIZE(default_supplies), 665 .supply_names = default_supplies, 666 .num_pm_domains = 1, /* optional */ 667 .pm_domain_names = NULL, 668 }; 669 670 static const struct of_device_id dt_match[] = { 671 { .compatible = "arm,mali-t604", .data = &default_data, }, 672 { .compatible = "arm,mali-t624", .data = &default_data, }, 673 { .compatible = "arm,mali-t628", .data = &default_data, }, 674 { .compatible = "arm,mali-t720", .data = &default_data, }, 675 { .compatible = "arm,mali-t760", .data = &default_data, }, 676 { .compatible = "arm,mali-t820", .data = &default_data, }, 677 { .compatible = "arm,mali-t830", .data = &default_data, }, 678 { .compatible = "arm,mali-t860", .data = &default_data, }, 679 { .compatible = "arm,mali-t880", .data = &default_data, }, 680 {} 681 }; 682 MODULE_DEVICE_TABLE(of, dt_match); 683 684 static const struct dev_pm_ops panfrost_pm_ops = { 685 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) 686 SET_RUNTIME_PM_OPS(panfrost_device_suspend, panfrost_device_resume, NULL) 687 }; 688 689 static struct platform_driver panfrost_driver = { 690 .probe = panfrost_probe, 691 .remove = panfrost_remove, 692 .driver = { 693 .name = "panfrost", 694 .pm = &panfrost_pm_ops, 695 .of_match_table = dt_match, 696 }, 697 }; 698 module_platform_driver(panfrost_driver); 699 700 MODULE_AUTHOR("Panfrost Project Developers"); 701 MODULE_DESCRIPTION("Panfrost DRM Driver"); 702 MODULE_LICENSE("GPL v2"); 703