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 drm_panfrost_submit *args = data;
 237         struct drm_syncobj *sync_out = NULL;
 238         struct panfrost_job *job;
 239         int ret = 0, slot;
 240
 241         if (!args->jc)
 242                 return -EINVAL;
 243
 244         if (args->requirements && args->requirements != PANFROST_JD_REQ_FS)
 245                 return -EINVAL;
 246
 247         if (args->out_sync > 0) {
 248                 sync_out = drm_syncobj_find(file, args->out_sync);
 249                 if (!sync_out)
 250                         return -ENODEV;
 251         }
 252
 253         job = kzalloc(sizeof(*job), GFP_KERNEL);
 254         if (!job) {
 255                 ret = -ENOMEM;
 256                 goto out_put_syncout;
 257         }
 258
 259         kref_init(&job->refcount);
 260
 261         job->pfdev = pfdev;
 262         job->jc = args->jc;
 263         job->requirements = args->requirements;
 264         job->flush_id = panfrost_gpu_get_latest_flush_id(pfdev);
 265         job->file_priv = file->driver_priv;
 266
 267         slot = panfrost_job_get_slot(job);
 268
 269         ret = drm_sched_job_init(&job->base,
 270                                  &job->file_priv->sched_entity[slot],
 271                                  NULL);
 272         if (ret)
 273                 goto out_put_job;
 274
 275         ret = panfrost_copy_in_sync(dev, file, args, job);
 276         if (ret)
 277                 goto out_cleanup_job;
 278
 279         ret = panfrost_lookup_bos(dev, file, args, job);
 280         if (ret)
 281                 goto out_cleanup_job;
 282
 283         ret = panfrost_job_push(job);
 284         if (ret)
 285                 goto out_cleanup_job;
 286
 287         /* Update the return sync object for the job */
 288         if (sync_out)
 289                 drm_syncobj_replace_fence(sync_out, job->render_done_fence);
 290
 291 out_cleanup_job:
 292         if (ret)
 293                 drm_sched_job_cleanup(&job->base);
 294 out_put_job:
 295         panfrost_job_put(job);
 296 out_put_syncout:
 297         if (sync_out)
 298                 drm_syncobj_put(sync_out);
 299
 300         return ret;
 301 }
 302
 303 static int
 304 panfrost_ioctl_wait_bo(struct drm_device *dev, void *data,
 305                        struct drm_file *file_priv)
 306 {
 307         long ret;
 308         struct drm_panfrost_wait_bo *args = data;
 309         struct drm_gem_object *gem_obj;
 310         unsigned long timeout = drm_timeout_abs_to_jiffies(args->timeout_ns);
 311
 312         if (args->pad)
 313                 return -EINVAL;
 314
 315         gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 316         if (!gem_obj)
 317                 return -ENOENT;
 318
 319         ret = dma_resv_wait_timeout(gem_obj->resv, DMA_RESV_USAGE_READ,
 320                                     true, timeout);
 321         if (!ret)
 322                 ret = timeout ? -ETIMEDOUT : -EBUSY;
 323
 324         drm_gem_object_put(gem_obj);
 325
 326         return ret;
 327 }
 328
 329 static int panfrost_ioctl_mmap_bo(struct drm_device *dev, void *data,
 330                       struct drm_file *file_priv)
 331 {
 332         struct drm_panfrost_mmap_bo *args = data;
 333         struct drm_gem_object *gem_obj;
 334         int ret;
 335
 336         if (args->flags != 0) {
 337                 DRM_INFO("unknown mmap_bo flags: %d\n", args->flags);
 338                 return -EINVAL;
 339         }
 340
 341         gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 342         if (!gem_obj) {
 343                 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 344                 return -ENOENT;
 345         }
 346
 347         /* Don't allow mmapping of heap objects as pages are not pinned. */
 348         if (to_panfrost_bo(gem_obj)->is_heap) {
 349                 ret = -EINVAL;
 350                 goto out;
 351         }
 352
 353         ret = drm_gem_create_mmap_offset(gem_obj);
 354         if (ret == 0)
 355                 args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node);
 356
 357 out:
 358         drm_gem_object_put(gem_obj);
 359         return ret;
 360 }
 361
 362 static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data,
 363                             struct drm_file *file_priv)
 364 {
 365         struct panfrost_file_priv *priv = file_priv->driver_priv;
 366         struct drm_panfrost_get_bo_offset *args = data;
 367         struct panfrost_gem_mapping *mapping;
 368         struct drm_gem_object *gem_obj;
 369         struct panfrost_gem_object *bo;
 370
 371         gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 372         if (!gem_obj) {
 373                 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 374                 return -ENOENT;
 375         }
 376         bo = to_panfrost_bo(gem_obj);
 377
 378         mapping = panfrost_gem_mapping_get(bo, priv);
 379         drm_gem_object_put(gem_obj);
 380
 381         if (!mapping)
 382                 return -EINVAL;
 383
 384         args->offset = mapping->mmnode.start << PAGE_SHIFT;
 385         panfrost_gem_mapping_put(mapping);
 386         return 0;
 387 }
 388
 389 static int panfrost_ioctl_madvise(struct drm_device *dev, void *data,
 390                                   struct drm_file *file_priv)
 391 {
 392         struct panfrost_file_priv *priv = file_priv->driver_priv;
 393         struct drm_panfrost_madvise *args = data;
 394         struct panfrost_device *pfdev = dev->dev_private;
 395         struct drm_gem_object *gem_obj;
 396         struct panfrost_gem_object *bo;
 397         int ret = 0;
 398
 399         gem_obj = drm_gem_object_lookup(file_priv, args->handle);
 400         if (!gem_obj) {
 401                 DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
 402                 return -ENOENT;
 403         }
 404
 405         bo = to_panfrost_bo(gem_obj);
 406
 407         mutex_lock(&pfdev->shrinker_lock);
 408         mutex_lock(&bo->mappings.lock);
 409         if (args->madv == PANFROST_MADV_DONTNEED) {
 410                 struct panfrost_gem_mapping *first;
 411
 412                 first = list_first_entry(&bo->mappings.list,
 413                                          struct panfrost_gem_mapping,
 414                                          node);
 415
 416                 /*
 417                  * If we want to mark the BO purgeable, there must be only one
 418                  * user: the caller FD.
 419                  * We could do something smarter and mark the BO purgeable only
 420                  * when all its users have marked it purgeable, but globally
 421                  * visible/shared BOs are likely to never be marked purgeable
 422                  * anyway, so let's not bother.
 423                  */
 424                 if (!list_is_singular(&bo->mappings.list) ||
 425                     WARN_ON_ONCE(first->mmu != priv->mmu)) {
 426                         ret = -EINVAL;
 427                         goto out_unlock_mappings;
 428                 }
 429         }
 430
 431         args->retained = drm_gem_shmem_madvise(&bo->base, args->madv);
 432
 433         if (args->retained) {
 434                 if (args->madv == PANFROST_MADV_DONTNEED)
 435                         list_add_tail(&bo->base.madv_list,
 436                                       &pfdev->shrinker_list);
 437                 else if (args->madv == PANFROST_MADV_WILLNEED)
 438                         list_del_init(&bo->base.madv_list);
 439         }
 440
 441 out_unlock_mappings:
 442         mutex_unlock(&bo->mappings.lock);
 443         mutex_unlock(&pfdev->shrinker_lock);
 444
 445         drm_gem_object_put(gem_obj);
 446         return ret;
 447 }
 448
 449 int panfrost_unstable_ioctl_check(void)
 450 {
 451         if (!unstable_ioctls)
 452                 return -ENOSYS;
 453
 454         return 0;
 455 }
 456
 457 static int
 458 panfrost_open(struct drm_device *dev, struct drm_file *file)
 459 {
 460         int ret;
 461         struct panfrost_device *pfdev = dev->dev_private;
 462         struct panfrost_file_priv *panfrost_priv;
 463
 464         panfrost_priv = kzalloc(sizeof(*panfrost_priv), GFP_KERNEL);
 465         if (!panfrost_priv)
 466                 return -ENOMEM;
 467
 468         panfrost_priv->pfdev = pfdev;
 469         file->driver_priv = panfrost_priv;
 470
 471         panfrost_priv->mmu = panfrost_mmu_ctx_create(pfdev);
 472         if (IS_ERR(panfrost_priv->mmu)) {
 473                 ret = PTR_ERR(panfrost_priv->mmu);
 474                 goto err_free;
 475         }
 476
 477         ret = panfrost_job_open(panfrost_priv);
 478         if (ret)
 479                 goto err_job;
 480
 481         return 0;
 482
 483 err_job:
 484         panfrost_mmu_ctx_put(panfrost_priv->mmu);
 485 err_free:
 486         kfree(panfrost_priv);
 487         return ret;
 488 }
 489
 490 static void
 491 panfrost_postclose(struct drm_device *dev, struct drm_file *file)
 492 {
 493         struct panfrost_file_priv *panfrost_priv = file->driver_priv;
 494
 495         panfrost_perfcnt_close(file);
 496         panfrost_job_close(panfrost_priv);
 497
 498         panfrost_mmu_ctx_put(panfrost_priv->mmu);
 499         kfree(panfrost_priv);
 500 }
 501
 502 static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = {
 503 #define PANFROST_IOCTL(n, func, flags) \
 504         DRM_IOCTL_DEF_DRV(PANFROST_##n, panfrost_ioctl_##func, flags)
 505
 506         PANFROST_IOCTL(SUBMIT,          submit,         DRM_RENDER_ALLOW),
 507         PANFROST_IOCTL(WAIT_BO,         wait_bo,        DRM_RENDER_ALLOW),
 508         PANFROST_IOCTL(CREATE_BO,       create_bo,      DRM_RENDER_ALLOW),
 509         PANFROST_IOCTL(MMAP_BO,         mmap_bo,        DRM_RENDER_ALLOW),
 510         PANFROST_IOCTL(GET_PARAM,       get_param,      DRM_RENDER_ALLOW),
 511         PANFROST_IOCTL(GET_BO_OFFSET,   get_bo_offset,  DRM_RENDER_ALLOW),
 512         PANFROST_IOCTL(PERFCNT_ENABLE,  perfcnt_enable, DRM_RENDER_ALLOW),
 513         PANFROST_IOCTL(PERFCNT_DUMP,    perfcnt_dump,   DRM_RENDER_ALLOW),
 514         PANFROST_IOCTL(MADVISE,         madvise,        DRM_RENDER_ALLOW),
 515 };
 516
 517 DEFINE_DRM_GEM_FOPS(panfrost_drm_driver_fops);
 518
 519 /*
 520  * Panfrost driver version:
 521  * - 1.0 - initial interface
 522  * - 1.1 - adds HEAP and NOEXEC flags for CREATE_BO
 523  * - 1.2 - adds AFBC_FEATURES query
 524  */
 525 static const struct drm_driver panfrost_drm_driver = {
 526         .driver_features        = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
 527         .open                   = panfrost_open,
 528         .postclose              = panfrost_postclose,
 529         .ioctls                 = panfrost_drm_driver_ioctls,
 530         .num_ioctls             = ARRAY_SIZE(panfrost_drm_driver_ioctls),
 531         .fops                   = &panfrost_drm_driver_fops,
 532         .name                   = "panfrost",
 533         .desc                   = "panfrost DRM",
 534         .date                   = "20180908",
 535         .major                  = 1,
 536         .minor                  = 2,
 537
 538         .gem_create_object      = panfrost_gem_create_object,
 539         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 540         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 541         .gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table,
 542         .gem_prime_mmap         = drm_gem_prime_mmap,
 543 };
 544
 545 static int panfrost_probe(struct platform_device *pdev)
 546 {
 547         struct panfrost_device *pfdev;
 548         struct drm_device *ddev;
 549         int err;
 550
 551         pfdev = devm_kzalloc(&pdev->dev, sizeof(*pfdev), GFP_KERNEL);
 552         if (!pfdev)
 553                 return -ENOMEM;
 554
 555         pfdev->pdev = pdev;
 556         pfdev->dev = &pdev->dev;
 557
 558         platform_set_drvdata(pdev, pfdev);
 559
 560         pfdev->comp = of_device_get_match_data(&pdev->dev);
 561         if (!pfdev->comp)
 562                 return -ENODEV;
 563
 564         pfdev->coherent = device_get_dma_attr(&pdev->dev) == DEV_DMA_COHERENT;
 565
 566         /* Allocate and initialize the DRM device. */
 567         ddev = drm_dev_alloc(&panfrost_drm_driver, &pdev->dev);
 568         if (IS_ERR(ddev))
 569                 return PTR_ERR(ddev);
 570
 571         ddev->dev_private = pfdev;
 572         pfdev->ddev = ddev;
 573
 574         mutex_init(&pfdev->shrinker_lock);
 575         INIT_LIST_HEAD(&pfdev->shrinker_list);
 576
 577         err = panfrost_device_init(pfdev);
 578         if (err) {
 579                 if (err != -EPROBE_DEFER)
 580                         dev_err(&pdev->dev, "Fatal error during GPU init\n");
 581                 goto err_out0;
 582         }
 583
 584         pm_runtime_set_active(pfdev->dev);
 585         pm_runtime_mark_last_busy(pfdev->dev);
 586         pm_runtime_enable(pfdev->dev);
 587         pm_runtime_set_autosuspend_delay(pfdev->dev, 50); /* ~3 frames */
 588         pm_runtime_use_autosuspend(pfdev->dev);
 589
 590         /*
 591          * Register the DRM device with the core and the connectors with
 592          * sysfs
 593          */
 594         err = drm_dev_register(ddev, 0);
 595         if (err < 0)
 596                 goto err_out1;
 597
 598         panfrost_gem_shrinker_init(ddev);
 599
 600         return 0;
 601
 602 err_out1:
 603         pm_runtime_disable(pfdev->dev);
 604         panfrost_device_fini(pfdev);
 605         pm_runtime_set_suspended(pfdev->dev);
 606 err_out0:
 607         drm_dev_put(ddev);
 608         return err;
 609 }
 610
 611 static int panfrost_remove(struct platform_device *pdev)
 612 {
 613         struct panfrost_device *pfdev = platform_get_drvdata(pdev);
 614         struct drm_device *ddev = pfdev->ddev;
 615
 616         drm_dev_unregister(ddev);
 617         panfrost_gem_shrinker_cleanup(ddev);
 618
 619         pm_runtime_get_sync(pfdev->dev);
 620         pm_runtime_disable(pfdev->dev);
 621         panfrost_device_fini(pfdev);
 622         pm_runtime_set_suspended(pfdev->dev);
 623
 624         drm_dev_put(ddev);
 625         return 0;
 626 }
 627
 628 static const char * const default_supplies[] = { "mali" };
 629 static const struct panfrost_compatible default_data = {
 630         .num_supplies = ARRAY_SIZE(default_supplies),
 631         .supply_names = default_supplies,
 632         .num_pm_domains = 1, /* optional */
 633         .pm_domain_names = NULL,
 634 };
 635
 636 static const struct panfrost_compatible amlogic_data = {
 637         .num_supplies = ARRAY_SIZE(default_supplies),
 638         .supply_names = default_supplies,
 639         .vendor_quirk = panfrost_gpu_amlogic_quirk,
 640 };
 641
 642 static const char * const mediatek_mt8183_supplies[] = { "mali", "sram" };
 643 static const char * const mediatek_mt8183_pm_domains[] = { "core0", "core1", "core2" };
 644 static const struct panfrost_compatible mediatek_mt8183_data = {
 645         .num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies),
 646         .supply_names = mediatek_mt8183_supplies,
 647         .num_pm_domains = ARRAY_SIZE(mediatek_mt8183_pm_domains),
 648         .pm_domain_names = mediatek_mt8183_pm_domains,
 649 };
 650
 651 static const struct of_device_id dt_match[] = {
 652         /* Set first to probe before the generic compatibles */
 653         { .compatible = "amlogic,meson-gxm-mali",
 654           .data = &amlogic_data, },
 655         { .compatible = "amlogic,meson-g12a-mali",
 656           .data = &amlogic_data, },
 657         { .compatible = "arm,mali-t604", .data = &default_data, },
 658         { .compatible = "arm,mali-t624", .data = &default_data, },
 659         { .compatible = "arm,mali-t628", .data = &default_data, },
 660         { .compatible = "arm,mali-t720", .data = &default_data, },
 661         { .compatible = "arm,mali-t760", .data = &default_data, },
 662         { .compatible = "arm,mali-t820", .data = &default_data, },
 663         { .compatible = "arm,mali-t830", .data = &default_data, },
 664         { .compatible = "arm,mali-t860", .data = &default_data, },
 665         { .compatible = "arm,mali-t880", .data = &default_data, },
 666         { .compatible = "arm,mali-bifrost", .data = &default_data, },
 667         { .compatible = "mediatek,mt8183-mali", .data = &mediatek_mt8183_data },
 668         {}
 669 };
 670 MODULE_DEVICE_TABLE(of, dt_match);
 671
 672 static const struct dev_pm_ops panfrost_pm_ops = {
 673         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
 674         SET_RUNTIME_PM_OPS(panfrost_device_suspend, panfrost_device_resume, NULL)
 675 };
 676
 677 static struct platform_driver panfrost_driver = {
 678         .probe          = panfrost_probe,
 679         .remove         = panfrost_remove,
 680         .driver         = {
 681                 .name   = "panfrost",
 682                 .pm     = &panfrost_pm_ops,
 683                 .of_match_table = dt_match,
 684         },
 685 };
 686 module_platform_driver(panfrost_driver);
 687
 688 MODULE_AUTHOR("Panfrost Project Developers");
 689 MODULE_DESCRIPTION("Panfrost DRM Driver");
 690 MODULE_LICENSE("GPL v2");