drivers/gpu/drm/panfrost/panfrost_drv.c

   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_gem.h"
  18 #include "panfrost_mmu.h"
  19 #include "panfrost_job.h"
  20 #include "panfrost_gpu.h"
  21 #include "panfrost_perfcnt.h"
  22
  23 static bool unstable_ioctls;
  24 module_param_unsafe(unstable_ioctls, bool, 0600);
  25
  26 static int panfrost_ioctl_get_param(struct drm_device *ddev, void *data, struct drm_file *file)
  27 {
  28         struct drm_panfrost_get_param *param = data;
  29         struct panfrost_device *pfdev = ddev->dev_private;
  30
  31         if (param->pad != 0)
  32                 return -EINVAL;
  33
  34 #define PANFROST_FEATURE(name, member)                  \
  35         case DRM_PANFROST_PARAM_ ## name:               \
  36                 param->value = pfdev->features.member;  \
  37                 break
  38 #define PANFROST_FEATURE_ARRAY(name, member, max)                       \
  39         case DRM_PANFROST_PARAM_ ## name ## 0 ...                       \
  40                 DRM_PANFROST_PARAM_ ## name ## max:                     \
  41                 param->value = pfdev->features.member[param->param -    \
  42                         DRM_PANFROST_PARAM_ ## name ## 0];              \
  43                 break
  44
  45         switch (param->param) {
  46                 PANFROST_FEATURE(GPU_PROD_ID, id);
  47                 PANFROST_FEATURE(GPU_REVISION, revision);
  48                 PANFROST_FEATURE(SHADER_PRESENT, shader_present);
  49                 PANFROST_FEATURE(TILER_PRESENT, tiler_present);
  50                 PANFROST_FEATURE(L2_PRESENT, l2_present);
  51                 PANFROST_FEATURE(STACK_PRESENT, stack_present);
  52                 PANFROST_FEATURE(AS_PRESENT, as_present);
  53                 PANFROST_FEATURE(JS_PRESENT, js_present);
  54                 PANFROST_FEATURE(L2_FEATURES, l2_features);
  55                 PANFROST_FEATURE(CORE_FEATURES, core_features);
  56                 PANFROST_FEATURE(TILER_FEATURES, tiler_features);
  57                 PANFROST_FEATURE(MEM_FEATURES, mem_features);
  58                 PANFROST_FEATURE(MMU_FEATURES, mmu_features);
  59                 PANFROST_FEATURE(THREAD_FEATURES, thread_features);
  60                 PANFROST_FEATURE(MAX_THREADS, max_threads);
  61                 PANFROST_FEATURE(THREAD_MAX_WORKGROUP_SZ,
  62                                 thread_max_workgroup_sz);
  63                 PANFROST_FEATURE(THREAD_MAX_BARRIER_SZ,
  64                                 thread_max_barrier_sz);
  65                 PANFROST_FEATURE(COHERENCY_FEATURES, coherency_features);
  66                 PANFROST_FEATURE(AFBC_FEATURES, afbc_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(&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         ret = drm_gem_objects_lookup(file_priv,
 142                                      (void __user *)(uintptr_t)args->bo_handles,
 143                                      job->bo_count, &job->bos);
 144         if (ret)
 145                 return ret;
 146
 147         job->mappings = kvmalloc_array(job->bo_count,
 148                                        sizeof(struct panfrost_gem_mapping *),
 149                                        GFP_KERNEL | __GFP_ZERO);
 150         if (!job->mappings)
 151                 return -ENOMEM;
 152
 153         for (i = 0; i < job->bo_count; i++) {
 154                 struct panfrost_gem_mapping *mapping;
 155
 156                 bo = to_panfrost_bo(job->bos[i]);
 157                 mapping = panfrost_gem_mapping_get(bo, priv);
 158                 if (!mapping) {
 159                         ret = -EINVAL;
 160                         break;
 161                 }
 162
 163                 atomic_inc(&bo->gpu_usecount);
 164                 job->mappings[i] = mapping;
 165         }
 166
 167         return ret;
 168 }
 169
 170 /**
 171  * panfrost_copy_in_sync() - Sets up job->deps with the sync objects
 172  * referenced by the job.
 173  * @dev: DRM device
 174  * @file_priv: DRM file for this fd
 175  * @args: IOCTL args
 176  * @job: job being set up
 177  *
 178  * Resolve syncobjs from userspace to fences and attach them to job.
 179  *
 180  * Note that this function doesn't need to unreference the fences on
 181  * failure, because that will happen at panfrost_job_cleanup() time.
 182  */
 183 static int
 184 panfrost_copy_in_sync(struct drm_device *dev,
 185                   struct drm_file *file_priv,
 186                   struct drm_panfrost_submit *args,
 187                   struct panfrost_job *job)
 188 {
 189         u32 *handles;
 190         int ret = 0;
 191         int i, in_fence_count;
 192
 193         in_fence_count = args->in_sync_count;
 194
 195         if (!in_fence_count)
 196                 return 0;
 197
 198         handles = kvmalloc_array(in_fence_count, sizeof(u32), GFP_KERNEL);
 199         if (!handles) {
 200                 ret = -ENOMEM;
 201                 DRM_DEBUG("Failed to allocate incoming syncobj handles\n");
 202                 goto fail;
 203         }
 204
 205         if (copy_from_user(handles,
 206                            (void __user *)(uintptr_t)args->in_syncs,
 207                            in_fence_count * sizeof(u32))) {
 208                 ret = -EFAULT;
 209                 DRM_DEBUG("Failed to copy in syncobj handles\n");
 210                 goto fail;
 211         }
 212
 213         for (i = 0; i < in_fence_count; i++) {
 214                 struct dma_fence *fence;
 215
 216                 ret = drm_syncobj_find_fence(file_priv, handles[i], 0, 0,
 217                                              &fence);
 218                 if (ret)
 219                         goto fail;
 220
 221                 ret = drm_sched_job_add_dependency(&job->base, fence);
 222
 223                 if (ret)
 224                         goto fail;
 225         }
 226
 227 fail:
 228         kvfree(handles);
 229         return ret;
 230 }
 231
 232 static int panfrost_ioctl_submit(struct drm_device *dev, void *data,
 233                 struct drm_file *file)
 234 {
 235         struct panfrost_device *pfdev = dev->dev_private;
 236         struct panfrost_file_priv *file_priv = file->driver_priv;
 237         struct drm_panfrost_submit *args = data;
 238         struct drm_syncobj *sync_out = NULL;
 239         struct panfrost_job *job;
 240         int ret = 0, slot;
 241
 242         if (!args->jc)
 243                 return -EINVAL;
 244
 245         if (args->requirements && args->requirements != PANFROST_JD_REQ_FS)
 246                 return -EINVAL;
 247
 248         if (args->out_sync > 0) {
 249                 sync_out = drm_syncobj_find(file, args->out_sync);
 250                 if (!sync_out)
 251                         return -ENODEV;
 252         }
 253
 254         job = kzalloc(sizeof(*job), GFP_KERNEL);
 255         if (!job) {
 256                 ret = -ENOMEM;
 257                 goto out_put_syncout;
 258         }
 259
 260         kref_init(&job->refcount);
 261
 262         job->pfdev = pfdev;
 263         job->jc = args->jc;
 264         job->requirements = args->requirements;
 265         job->flush_id = panfrost_gpu_get_latest_flush_id(pfdev);
 266         job->mmu = file_priv->mmu;
 267
 268         slot = panfrost_job_get_slot(job);
 269
 270         ret = drm_sched_job_init(&job->base,
 271                                  &file_priv->sched_entity[slot],
 272                                  NULL);
 273         if (ret)
 274                 goto out_put_job;
 275
 276         ret = panfrost_copy_in_sync(dev, file, args, job);
 277         if (ret)
 278                 goto out_cleanup_job;
 279
 280         ret = panfrost_lookup_bos(dev, file, args, job);
 281         if (ret)
 282                 goto out_cleanup_job;
 283
 284         ret = panfrost_job_push(job);
 285         if (ret)
 286                 goto out_cleanup_job;
 287
 288         /* Update the return sync object for the job */
 289         if (sync_out)
 290                 drm_syncobj_replace_fence(sync_out, job->render_done_fence);
 291
 292 out_cleanup_job:
 293         if (ret)
 294                 drm_sched_job_cleanup(&job->base);
 295 out_put_job:
 296         panfrost_job_put(job);
 297 out_put_syncout:
 298         if (sync_out)
 299                 drm_syncobj_put(sync_out);
 300
 301         return ret;
 302 }
 303
 304 static int
 305 panfrost_ioctl_wait_bo(struct drm_device *dev, void *data,
 306                        struct drm_file *file_priv)
 307 {
 308         long ret;
 309         struct drm_panfrost_wait_bo *args = data;
 310         struct drm_gem_object *gem_obj;
 311         unsigned long timeout = drm_timeout_abs_to_jiffies(args->timeout_ns);
 312
 313         if (args->pad)
 314                 return -EINVAL;
 315
 316         gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 317         if (!gem_obj)
 318                 return -ENOENT;
 319
 320         ret = dma_resv_wait_timeout(gem_obj->resv, DMA_RESV_USAGE_READ,
 321                                     true, timeout);
 322         if (!ret)
 323                 ret = timeout ? -ETIMEDOUT : -EBUSY;
 324
 325         drm_gem_object_put(gem_obj);
 326
 327         return ret;
 328 }
 329
 330 static int panfrost_ioctl_mmap_bo(struct drm_device *dev, void *data,
 331                       struct drm_file *file_priv)
 332 {
 333         struct drm_panfrost_mmap_bo *args = data;
 334         struct drm_gem_object *gem_obj;
 335         int ret;
 336
 337         if (args->flags != 0) {
 338                 DRM_INFO("unknown mmap_bo flags: %d\n", args->flags);
 339                 return -EINVAL;
 340         }
 341
 342         gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 343         if (!gem_obj) {
 344                 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 345                 return -ENOENT;
 346         }
 347
 348         /* Don't allow mmapping of heap objects as pages are not pinned. */
 349         if (to_panfrost_bo(gem_obj)->is_heap) {
 350                 ret = -EINVAL;
 351                 goto out;
 352         }
 353
 354         ret = drm_gem_create_mmap_offset(gem_obj);
 355         if (ret == 0)
 356                 args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node);
 357
 358 out:
 359         drm_gem_object_put(gem_obj);
 360         return ret;
 361 }
 362
 363 static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data,
 364                             struct drm_file *file_priv)
 365 {
 366         struct panfrost_file_priv *priv = file_priv->driver_priv;
 367         struct drm_panfrost_get_bo_offset *args = data;
 368         struct panfrost_gem_mapping *mapping;
 369         struct drm_gem_object *gem_obj;
 370         struct panfrost_gem_object *bo;
 371
 372         gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 373         if (!gem_obj) {
 374                 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 375                 return -ENOENT;
 376         }
 377         bo = to_panfrost_bo(gem_obj);
 378
 379         mapping = panfrost_gem_mapping_get(bo, priv);
 380         drm_gem_object_put(gem_obj);
 381
 382         if (!mapping)
 383                 return -EINVAL;
 384
 385         args->offset = mapping->mmnode.start << PAGE_SHIFT;
 386         panfrost_gem_mapping_put(mapping);
 387         return 0;
 388 }
 389
 390 static int panfrost_ioctl_madvise(struct drm_device *dev, void *data,
 391                                   struct drm_file *file_priv)
 392 {
 393         struct panfrost_file_priv *priv = file_priv->driver_priv;
 394         struct drm_panfrost_madvise *args = data;
 395         struct panfrost_device *pfdev = dev->dev_private;
 396         struct drm_gem_object *gem_obj;
 397         struct panfrost_gem_object *bo;
 398         int ret = 0;
 399
 400         gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 401         if (!gem_obj) {
 402                 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 403                 return -ENOENT;
 404         }
 405
 406         bo = to_panfrost_bo(gem_obj);
 407
 408         mutex_lock(&pfdev->shrinker_lock);
 409         mutex_lock(&bo->mappings.lock);
 410         if (args->madv == PANFROST_MADV_DONTNEED) {
 411                 struct panfrost_gem_mapping *first;
 412
 413                 first = list_first_entry(&bo->mappings.list,
 414                                          struct panfrost_gem_mapping,
 415                                          node);
 416
 417                 /*
 418                  * If we want to mark the BO purgeable, there must be only one
 419                  * user: the caller FD.
 420                  * We could do something smarter and mark the BO purgeable only
 421                  * when all its users have marked it purgeable, but globally
 422                  * visible/shared BOs are likely to never be marked purgeable
 423                  * anyway, so let's not bother.
 424                  */
 425                 if (!list_is_singular(&bo->mappings.list) ||
 426                     WARN_ON_ONCE(first->mmu != priv->mmu)) {
 427                         ret = -EINVAL;
 428                         goto out_unlock_mappings;
 429                 }
 430         }
 431
 432         args->retained = drm_gem_shmem_madvise(&bo->base, args->madv);
 433
 434         if (args->retained) {
 435                 if (args->madv == PANFROST_MADV_DONTNEED)
 436                         list_add_tail(&bo->base.madv_list,
 437                                       &pfdev->shrinker_list);
 438                 else if (args->madv == PANFROST_MADV_WILLNEED)
 439                         list_del_init(&bo->base.madv_list);
 440         }
 441
 442 out_unlock_mappings:
 443         mutex_unlock(&bo->mappings.lock);
 444         mutex_unlock(&pfdev->shrinker_lock);
 445
 446         drm_gem_object_put(gem_obj);
 447         return ret;
 448 }
 449
 450 int panfrost_unstable_ioctl_check(void)
 451 {
 452         if (!unstable_ioctls)
 453                 return -ENOSYS;
 454
 455         return 0;
 456 }
 457
 458 static int
 459 panfrost_open(struct drm_device *dev, struct drm_file *file)
 460 {
 461         int ret;
 462         struct panfrost_device *pfdev = dev->dev_private;
 463         struct panfrost_file_priv *panfrost_priv;
 464
 465         panfrost_priv = kzalloc(sizeof(*panfrost_priv), GFP_KERNEL);
 466         if (!panfrost_priv)
 467                 return -ENOMEM;
 468
 469         panfrost_priv->pfdev = pfdev;
 470         file->driver_priv = panfrost_priv;
 471
 472         panfrost_priv->mmu = panfrost_mmu_ctx_create(pfdev);
 473         if (IS_ERR(panfrost_priv->mmu)) {
 474                 ret = PTR_ERR(panfrost_priv->mmu);
 475                 goto err_free;
 476         }
 477
 478         ret = panfrost_job_open(panfrost_priv);
 479         if (ret)
 480                 goto err_job;
 481
 482         return 0;
 483
 484 err_job:
 485         panfrost_mmu_ctx_put(panfrost_priv->mmu);
 486 err_free:
 487         kfree(panfrost_priv);
 488         return ret;
 489 }
 490
 491 static void
 492 panfrost_postclose(struct drm_device *dev, struct drm_file *file)
 493 {
 494         struct panfrost_file_priv *panfrost_priv = file->driver_priv;
 495
 496         panfrost_perfcnt_close(file);
 497         panfrost_job_close(panfrost_priv);
 498
 499         panfrost_mmu_ctx_put(panfrost_priv->mmu);
 500         kfree(panfrost_priv);
 501 }
 502
 503 static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = {
 504 #define PANFROST_IOCTL(n, func, flags) \
 505         DRM_IOCTL_DEF_DRV(PANFROST_##n, panfrost_ioctl_##func, flags)
 506
 507         PANFROST_IOCTL(SUBMIT,          submit,         DRM_RENDER_ALLOW),
 508         PANFROST_IOCTL(WAIT_BO,         wait_bo,        DRM_RENDER_ALLOW),
 509         PANFROST_IOCTL(CREATE_BO,       create_bo,      DRM_RENDER_ALLOW),
 510         PANFROST_IOCTL(MMAP_BO,         mmap_bo,        DRM_RENDER_ALLOW),
 511         PANFROST_IOCTL(GET_PARAM,       get_param,      DRM_RENDER_ALLOW),
 512         PANFROST_IOCTL(GET_BO_OFFSET,   get_bo_offset,  DRM_RENDER_ALLOW),
 513         PANFROST_IOCTL(PERFCNT_ENABLE,  perfcnt_enable, DRM_RENDER_ALLOW),
 514         PANFROST_IOCTL(PERFCNT_DUMP,    perfcnt_dump,   DRM_RENDER_ALLOW),
 515         PANFROST_IOCTL(MADVISE,         madvise,        DRM_RENDER_ALLOW),
 516 };
 517
 518 DEFINE_DRM_GEM_FOPS(panfrost_drm_driver_fops);
 519
 520 /*
 521  * Panfrost driver version:
 522  * - 1.0 - initial interface
 523  * - 1.1 - adds HEAP and NOEXEC flags for CREATE_BO
 524  * - 1.2 - adds AFBC_FEATURES query
 525  */
 526 static const struct drm_driver panfrost_drm_driver = {
 527         .driver_features        = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
 528         .open                   = panfrost_open,
 529         .postclose              = panfrost_postclose,
 530         .ioctls                 = panfrost_drm_driver_ioctls,
 531         .num_ioctls             = ARRAY_SIZE(panfrost_drm_driver_ioctls),
 532         .fops                   = &panfrost_drm_driver_fops,
 533         .name                   = "panfrost",
 534         .desc                   = "panfrost DRM",
 535         .date                   = "20180908",
 536         .major                  = 1,
 537         .minor                  = 2,
 538
 539         .gem_create_object      = panfrost_gem_create_object,
 540         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 541         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 542         .gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table,
 543         .gem_prime_mmap         = drm_gem_prime_mmap,
 544 };
 545
 546 static int panfrost_probe(struct platform_device *pdev)
 547 {
 548         struct panfrost_device *pfdev;
 549         struct drm_device *ddev;
 550         int err;
 551
 552         pfdev = devm_kzalloc(&pdev->dev, sizeof(*pfdev), GFP_KERNEL);
 553         if (!pfdev)
 554                 return -ENOMEM;
 555
 556         pfdev->pdev = pdev;
 557         pfdev->dev = &pdev->dev;
 558
 559         platform_set_drvdata(pdev, pfdev);
 560
 561         pfdev->comp = of_device_get_match_data(&pdev->dev);
 562         if (!pfdev->comp)
 563                 return -ENODEV;
 564
 565         pfdev->coherent = device_get_dma_attr(&pdev->dev) == DEV_DMA_COHERENT;
 566
 567         /* Allocate and initialize the DRM device. */
 568         ddev = drm_dev_alloc(&panfrost_drm_driver, &pdev->dev);
 569         if (IS_ERR(ddev))
 570                 return PTR_ERR(ddev);
 571
 572         ddev->dev_private = pfdev;
 573         pfdev->ddev = ddev;
 574
 575         mutex_init(&pfdev->shrinker_lock);
 576         INIT_LIST_HEAD(&pfdev->shrinker_list);
 577
 578         err = panfrost_device_init(pfdev);
 579         if (err) {
 580                 if (err != -EPROBE_DEFER)
 581                         dev_err(&pdev->dev, "Fatal error during GPU init\n");
 582                 goto err_out0;
 583         }
 584
 585         pm_runtime_set_active(pfdev->dev);
 586         pm_runtime_mark_last_busy(pfdev->dev);
 587         pm_runtime_enable(pfdev->dev);
 588         pm_runtime_set_autosuspend_delay(pfdev->dev, 50); /* ~3 frames */
 589         pm_runtime_use_autosuspend(pfdev->dev);
 590
 591         /*
 592          * Register the DRM device with the core and the connectors with
 593          * sysfs
 594          */
 595         err = drm_dev_register(ddev, 0);
 596         if (err < 0)
 597                 goto err_out1;
 598
 599         panfrost_gem_shrinker_init(ddev);
 600
 601         return 0;
 602
 603 err_out1:
 604         pm_runtime_disable(pfdev->dev);
 605         panfrost_device_fini(pfdev);
 606         pm_runtime_set_suspended(pfdev->dev);
 607 err_out0:
 608         drm_dev_put(ddev);
 609         return err;
 610 }
 611
 612 static int panfrost_remove(struct platform_device *pdev)
 613 {
 614         struct panfrost_device *pfdev = platform_get_drvdata(pdev);
 615         struct drm_device *ddev = pfdev->ddev;
 616
 617         drm_dev_unregister(ddev);
 618         panfrost_gem_shrinker_cleanup(ddev);
 619
 620         pm_runtime_get_sync(pfdev->dev);
 621         pm_runtime_disable(pfdev->dev);
 622         panfrost_device_fini(pfdev);
 623         pm_runtime_set_suspended(pfdev->dev);
 624
 625         drm_dev_put(ddev);
 626         return 0;
 627 }
 628
 629 static const char * const default_supplies[] = { "mali" };
 630 static const struct panfrost_compatible default_data = {
 631         .num_supplies = ARRAY_SIZE(default_supplies),
 632         .supply_names = default_supplies,
 633         .num_pm_domains = 1, /* optional */
 634         .pm_domain_names = NULL,
 635 };
 636
 637 static const struct panfrost_compatible amlogic_data = {
 638         .num_supplies = ARRAY_SIZE(default_supplies),
 639         .supply_names = default_supplies,
 640         .vendor_quirk = panfrost_gpu_amlogic_quirk,
 641 };
 642
 643 static const char * const mediatek_mt8183_supplies[] = { "mali", "sram" };
 644 static const char * const mediatek_mt8183_pm_domains[] = { "core0", "core1", "core2" };
 645 static const struct panfrost_compatible mediatek_mt8183_data = {
 646         .num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies),
 647         .supply_names = mediatek_mt8183_supplies,
 648         .num_pm_domains = ARRAY_SIZE(mediatek_mt8183_pm_domains),
 649         .pm_domain_names = mediatek_mt8183_pm_domains,
 650 };
 651
 652 static const struct of_device_id dt_match[] = {
 653         /* Set first to probe before the generic compatibles */
 654         { .compatible = "amlogic,meson-gxm-mali",
 655           .data = &amlogic_data, },
 656         { .compatible = "amlogic,meson-g12a-mali",
 657           .data = &amlogic_data, },
 658         { .compatible = "arm,mali-t604", .data = &default_data, },
 659         { .compatible = "arm,mali-t624", .data = &default_data, },
 660         { .compatible = "arm,mali-t628", .data = &default_data, },
 661         { .compatible = "arm,mali-t720", .data = &default_data, },
 662         { .compatible = "arm,mali-t760", .data = &default_data, },
 663         { .compatible = "arm,mali-t820", .data = &default_data, },
 664         { .compatible = "arm,mali-t830", .data = &default_data, },
 665         { .compatible = "arm,mali-t860", .data = &default_data, },
 666         { .compatible = "arm,mali-t880", .data = &default_data, },
 667         { .compatible = "arm,mali-bifrost", .data = &default_data, },
 668         { .compatible = "mediatek,mt8183-mali", .data = &mediatek_mt8183_data },
 669         {}
 670 };
 671 MODULE_DEVICE_TABLE(of, dt_match);
 672
 673 static const struct dev_pm_ops panfrost_pm_ops = {
 674         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
 675         SET_RUNTIME_PM_OPS(panfrost_device_suspend, panfrost_device_resume, NULL)
 676 };
 677
 678 static struct platform_driver panfrost_driver = {
 679         .probe          = panfrost_probe,
 680         .remove         = panfrost_remove,
 681         .driver         = {
 682                 .name   = "panfrost",
 683                 .pm     = &panfrost_pm_ops,
 684                 .of_match_table = dt_match,
 685         },
 686 };
 687 module_platform_driver(panfrost_driver);
 688
 689 MODULE_AUTHOR("Panfrost Project Developers");
 690 MODULE_DESCRIPTION("Panfrost DRM Driver");
 691 MODULE_LICENSE("GPL v2");