drivers/gpu/drm/mediatek/mtk_drm_drv.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2015 MediaTek Inc.
   4  * Author: YT SHEN <yt.shen@mediatek.com>
   5  */
   6
   7 #include <linux/component.h>
   8 #include <linux/iommu.h>
   9 #include <linux/module.h>
  10 #include <linux/of_address.h>
  11 #include <linux/of_platform.h>
  12 #include <linux/pm_runtime.h>
  13
  14 #include <drm/drm_atomic.h>
  15 #include <drm/drm_atomic_helper.h>
  16 #include <drm/drm_drv.h>
  17 #include <drm/drm_fb_helper.h>
  18 #include <drm/drm_gem.h>
  19 #include <drm/drm_gem_cma_helper.h>
  20 #include <drm/drm_of.h>
  21 #include <drm/drm_probe_helper.h>
  22 #include <drm/drm_vblank.h>
  23
  24 #include "mtk_drm_crtc.h"
  25 #include "mtk_drm_ddp.h"
  26 #include "mtk_drm_ddp.h"
  27 #include "mtk_drm_ddp_comp.h"
  28 #include "mtk_drm_drv.h"
  29 #include "mtk_drm_fb.h"
  30 #include "mtk_drm_gem.h"
  31
  32 #define DRIVER_NAME "mediatek"
  33 #define DRIVER_DESC "Mediatek SoC DRM"
  34 #define DRIVER_DATE "20150513"
  35 #define DRIVER_MAJOR 1
  36 #define DRIVER_MINOR 0
  37
  38 static void mtk_atomic_schedule(struct mtk_drm_private *private,
  39                                 struct drm_atomic_state *state)
  40 {
  41         private->commit.state = state;
  42         schedule_work(&private->commit.work);
  43 }
  44
  45 static void mtk_atomic_complete(struct mtk_drm_private *private,
  46                                 struct drm_atomic_state *state)
  47 {
  48         struct drm_device *drm = private->drm;
  49
  50         drm_atomic_helper_wait_for_fences(drm, state, false);
  51
  52         /*
  53          * Mediatek drm supports runtime PM, so plane registers cannot be
  54          * written when their crtc is disabled.
  55          *
  56          * The comment for drm_atomic_helper_commit states:
  57          *     For drivers supporting runtime PM the recommended sequence is
  58          *
  59          *     drm_atomic_helper_commit_modeset_disables(dev, state);
  60          *     drm_atomic_helper_commit_modeset_enables(dev, state);
  61          *     drm_atomic_helper_commit_planes(dev, state,
  62          *                                     DRM_PLANE_COMMIT_ACTIVE_ONLY);
  63          *
  64          * See the kerneldoc entries for these three functions for more details.
  65          */
  66         drm_atomic_helper_commit_modeset_disables(drm, state);
  67         drm_atomic_helper_commit_modeset_enables(drm, state);
  68         drm_atomic_helper_commit_planes(drm, state,
  69                                         DRM_PLANE_COMMIT_ACTIVE_ONLY);
  70
  71         drm_atomic_helper_wait_for_vblanks(drm, state);
  72
  73         drm_atomic_helper_cleanup_planes(drm, state);
  74         drm_atomic_state_put(state);
  75 }
  76
  77 static void mtk_atomic_work(struct work_struct *work)
  78 {
  79         struct mtk_drm_private *private = container_of(work,
  80                         struct mtk_drm_private, commit.work);
  81
  82         mtk_atomic_complete(private, private->commit.state);
  83 }
  84
  85 static int mtk_atomic_commit(struct drm_device *drm,
  86                              struct drm_atomic_state *state,
  87                              bool async)
  88 {
  89         struct mtk_drm_private *private = drm->dev_private;
  90         int ret;
  91
  92         ret = drm_atomic_helper_prepare_planes(drm, state);
  93         if (ret)
  94                 return ret;
  95
  96         mutex_lock(&private->commit.lock);
  97         flush_work(&private->commit.work);
  98
  99         ret = drm_atomic_helper_swap_state(state, true);
 100         if (ret) {
 101                 mutex_unlock(&private->commit.lock);
 102                 drm_atomic_helper_cleanup_planes(drm, state);
 103                 return ret;
 104         }
 105
 106         drm_atomic_state_get(state);
 107         if (async)
 108                 mtk_atomic_schedule(private, state);
 109         else
 110                 mtk_atomic_complete(private, state);
 111
 112         mutex_unlock(&private->commit.lock);
 113
 114         return 0;
 115 }
 116
 117 static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = {
 118         .fb_create = mtk_drm_mode_fb_create,
 119         .atomic_check = drm_atomic_helper_check,
 120         .atomic_commit = mtk_atomic_commit,
 121 };
 122
 123 static const enum mtk_ddp_comp_id mt2701_mtk_ddp_main[] = {
 124         DDP_COMPONENT_OVL0,
 125         DDP_COMPONENT_RDMA0,
 126         DDP_COMPONENT_COLOR0,
 127         DDP_COMPONENT_BLS,
 128         DDP_COMPONENT_DSI0,
 129 };
 130
 131 static const enum mtk_ddp_comp_id mt2701_mtk_ddp_ext[] = {
 132         DDP_COMPONENT_RDMA1,
 133         DDP_COMPONENT_DPI0,
 134 };
 135
 136 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_main[] = {
 137         DDP_COMPONENT_OVL0,
 138         DDP_COMPONENT_COLOR0,
 139         DDP_COMPONENT_AAL0,
 140         DDP_COMPONENT_OD0,
 141         DDP_COMPONENT_RDMA0,
 142         DDP_COMPONENT_DPI0,
 143         DDP_COMPONENT_PWM0,
 144 };
 145
 146 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_ext[] = {
 147         DDP_COMPONENT_OVL1,
 148         DDP_COMPONENT_COLOR1,
 149         DDP_COMPONENT_AAL1,
 150         DDP_COMPONENT_OD1,
 151         DDP_COMPONENT_RDMA1,
 152         DDP_COMPONENT_DPI1,
 153         DDP_COMPONENT_PWM1,
 154 };
 155
 156 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_third[] = {
 157         DDP_COMPONENT_RDMA2,
 158         DDP_COMPONENT_DSI3,
 159         DDP_COMPONENT_PWM2,
 160 };
 161
 162 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_main[] = {
 163         DDP_COMPONENT_OVL0,
 164         DDP_COMPONENT_COLOR0,
 165         DDP_COMPONENT_AAL0,
 166         DDP_COMPONENT_OD0,
 167         DDP_COMPONENT_RDMA0,
 168         DDP_COMPONENT_UFOE,
 169         DDP_COMPONENT_DSI0,
 170         DDP_COMPONENT_PWM0,
 171 };
 172
 173 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_ext[] = {
 174         DDP_COMPONENT_OVL1,
 175         DDP_COMPONENT_COLOR1,
 176         DDP_COMPONENT_GAMMA,
 177         DDP_COMPONENT_RDMA1,
 178         DDP_COMPONENT_DPI0,
 179 };
 180
 181 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
 182         .main_path = mt2701_mtk_ddp_main,
 183         .main_len = ARRAY_SIZE(mt2701_mtk_ddp_main),
 184         .ext_path = mt2701_mtk_ddp_ext,
 185         .ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext),
 186         .shadow_register = true,
 187 };
 188
 189 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
 190         .main_path = mt2712_mtk_ddp_main,
 191         .main_len = ARRAY_SIZE(mt2712_mtk_ddp_main),
 192         .ext_path = mt2712_mtk_ddp_ext,
 193         .ext_len = ARRAY_SIZE(mt2712_mtk_ddp_ext),
 194         .third_path = mt2712_mtk_ddp_third,
 195         .third_len = ARRAY_SIZE(mt2712_mtk_ddp_third),
 196 };
 197
 198 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
 199         .main_path = mt8173_mtk_ddp_main,
 200         .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main),
 201         .ext_path = mt8173_mtk_ddp_ext,
 202         .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
 203 };
 204
 205 static int mtk_drm_kms_init(struct drm_device *drm)
 206 {
 207         struct mtk_drm_private *private = drm->dev_private;
 208         struct platform_device *pdev;
 209         struct device_node *np;
 210         int ret;
 211
 212         if (!iommu_present(&platform_bus_type))
 213                 return -EPROBE_DEFER;
 214
 215         pdev = of_find_device_by_node(private->mutex_node);
 216         if (!pdev) {
 217                 dev_err(drm->dev, "Waiting for disp-mutex device %pOF\n",
 218                         private->mutex_node);
 219                 of_node_put(private->mutex_node);
 220                 return -EPROBE_DEFER;
 221         }
 222         private->mutex_dev = &pdev->dev;
 223
 224         drm_mode_config_init(drm);
 225
 226         drm->mode_config.min_width = 64;
 227         drm->mode_config.min_height = 64;
 228
 229         /*
 230          * set max width and height as default value(4096x4096).
 231          * this value would be used to check framebuffer size limitation
 232          * at drm_mode_addfb().
 233          */
 234         drm->mode_config.max_width = 4096;
 235         drm->mode_config.max_height = 4096;
 236         drm->mode_config.funcs = &mtk_drm_mode_config_funcs;
 237
 238         ret = component_bind_all(drm->dev, drm);
 239         if (ret)
 240                 goto err_config_cleanup;
 241
 242         /*
 243          * We currently support two fixed data streams, each optional,
 244          * and each statically assigned to a crtc:
 245          * OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0 ...
 246          */
 247         ret = mtk_drm_crtc_create(drm, private->data->main_path,
 248                                   private->data->main_len);
 249         if (ret < 0)
 250                 goto err_component_unbind;
 251         /* ... and OVL1 -> COLOR1 -> GAMMA -> RDMA1 -> DPI0. */
 252         ret = mtk_drm_crtc_create(drm, private->data->ext_path,
 253                                   private->data->ext_len);
 254         if (ret < 0)
 255                 goto err_component_unbind;
 256
 257         ret = mtk_drm_crtc_create(drm, private->data->third_path,
 258                                   private->data->third_len);
 259         if (ret < 0)
 260                 goto err_component_unbind;
 261
 262         /* Use OVL device for all DMA memory allocations */
 263         np = private->comp_node[private->data->main_path[0]] ?:
 264              private->comp_node[private->data->ext_path[0]];
 265         pdev = of_find_device_by_node(np);
 266         if (!pdev) {
 267                 ret = -ENODEV;
 268                 dev_err(drm->dev, "Need at least one OVL device\n");
 269                 goto err_component_unbind;
 270         }
 271
 272         private->dma_dev = &pdev->dev;
 273
 274         /*
 275          * We don't use the drm_irq_install() helpers provided by the DRM
 276          * core, so we need to set this manually in order to allow the
 277          * DRM_IOCTL_WAIT_VBLANK to operate correctly.
 278          */
 279         drm->irq_enabled = true;
 280         ret = drm_vblank_init(drm, MAX_CRTC);
 281         if (ret < 0)
 282                 goto err_component_unbind;
 283
 284         drm_kms_helper_poll_init(drm);
 285         drm_mode_config_reset(drm);
 286
 287         return 0;
 288
 289 err_component_unbind:
 290         component_unbind_all(drm->dev, drm);
 291 err_config_cleanup:
 292         drm_mode_config_cleanup(drm);
 293
 294         return ret;
 295 }
 296
 297 static void mtk_drm_kms_deinit(struct drm_device *drm)
 298 {
 299         drm_kms_helper_poll_fini(drm);
 300         drm_atomic_helper_shutdown(drm);
 301
 302         component_unbind_all(drm->dev, drm);
 303         drm_mode_config_cleanup(drm);
 304 }
 305
 306 static const struct file_operations mtk_drm_fops = {
 307         .owner = THIS_MODULE,
 308         .open = drm_open,
 309         .release = drm_release,
 310         .unlocked_ioctl = drm_ioctl,
 311         .mmap = mtk_drm_gem_mmap,
 312         .poll = drm_poll,
 313         .read = drm_read,
 314         .compat_ioctl = drm_compat_ioctl,
 315 };
 316
 317 static struct drm_driver mtk_drm_driver = {
 318         .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
 319
 320         .gem_free_object_unlocked = mtk_drm_gem_free_object,
 321         .gem_vm_ops = &drm_gem_cma_vm_ops,
 322         .dumb_create = mtk_drm_gem_dumb_create,
 323
 324         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 325         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 326         .gem_prime_get_sg_table = mtk_gem_prime_get_sg_table,
 327         .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
 328         .gem_prime_mmap = mtk_drm_gem_mmap_buf,
 329         .gem_prime_vmap = mtk_drm_gem_prime_vmap,
 330         .gem_prime_vunmap = mtk_drm_gem_prime_vunmap,
 331         .fops = &mtk_drm_fops,
 332
 333         .name = DRIVER_NAME,
 334         .desc = DRIVER_DESC,
 335         .date = DRIVER_DATE,
 336         .major = DRIVER_MAJOR,
 337         .minor = DRIVER_MINOR,
 338 };
 339
 340 static int compare_of(struct device *dev, void *data)
 341 {
 342         return dev->of_node == data;
 343 }
 344
 345 static int mtk_drm_bind(struct device *dev)
 346 {
 347         struct mtk_drm_private *private = dev_get_drvdata(dev);
 348         struct drm_device *drm;
 349         int ret;
 350
 351         drm = drm_dev_alloc(&mtk_drm_driver, dev);
 352         if (IS_ERR(drm))
 353                 return PTR_ERR(drm);
 354
 355         drm->dev_private = private;
 356         private->drm = drm;
 357
 358         ret = mtk_drm_kms_init(drm);
 359         if (ret < 0)
 360                 goto err_free;
 361
 362         ret = drm_dev_register(drm, 0);
 363         if (ret < 0)
 364                 goto err_deinit;
 365
 366         ret = drm_fbdev_generic_setup(drm, 32);
 367         if (ret)
 368                 DRM_ERROR("Failed to initialize fbdev: %d\n", ret);
 369
 370         return 0;
 371
 372 err_deinit:
 373         mtk_drm_kms_deinit(drm);
 374 err_free:
 375         drm_dev_put(drm);
 376         return ret;
 377 }
 378
 379 static void mtk_drm_unbind(struct device *dev)
 380 {
 381         struct mtk_drm_private *private = dev_get_drvdata(dev);
 382
 383         drm_dev_unregister(private->drm);
 384         mtk_drm_kms_deinit(private->drm);
 385         drm_dev_put(private->drm);
 386         private->num_pipes = 0;
 387         private->drm = NULL;
 388 }
 389
 390 static const struct component_master_ops mtk_drm_ops = {
 391         .bind           = mtk_drm_bind,
 392         .unbind         = mtk_drm_unbind,
 393 };
 394
 395 static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
 396         { .compatible = "mediatek,mt2701-disp-ovl",
 397           .data = (void *)MTK_DISP_OVL },
 398         { .compatible = "mediatek,mt8173-disp-ovl",
 399           .data = (void *)MTK_DISP_OVL },
 400         { .compatible = "mediatek,mt2701-disp-rdma",
 401           .data = (void *)MTK_DISP_RDMA },
 402         { .compatible = "mediatek,mt8173-disp-rdma",
 403           .data = (void *)MTK_DISP_RDMA },
 404         { .compatible = "mediatek,mt8173-disp-wdma",
 405           .data = (void *)MTK_DISP_WDMA },
 406         { .compatible = "mediatek,mt2701-disp-color",
 407           .data = (void *)MTK_DISP_COLOR },
 408         { .compatible = "mediatek,mt8173-disp-color",
 409           .data = (void *)MTK_DISP_COLOR },
 410         { .compatible = "mediatek,mt8173-disp-aal",
 411           .data = (void *)MTK_DISP_AAL},
 412         { .compatible = "mediatek,mt8173-disp-gamma",
 413           .data = (void *)MTK_DISP_GAMMA, },
 414         { .compatible = "mediatek,mt8173-disp-ufoe",
 415           .data = (void *)MTK_DISP_UFOE },
 416         { .compatible = "mediatek,mt2701-dsi",
 417           .data = (void *)MTK_DSI },
 418         { .compatible = "mediatek,mt8173-dsi",
 419           .data = (void *)MTK_DSI },
 420         { .compatible = "mediatek,mt2701-dpi",
 421           .data = (void *)MTK_DPI },
 422         { .compatible = "mediatek,mt8173-dpi",
 423           .data = (void *)MTK_DPI },
 424         { .compatible = "mediatek,mt2701-disp-mutex",
 425           .data = (void *)MTK_DISP_MUTEX },
 426         { .compatible = "mediatek,mt2712-disp-mutex",
 427           .data = (void *)MTK_DISP_MUTEX },
 428         { .compatible = "mediatek,mt8173-disp-mutex",
 429           .data = (void *)MTK_DISP_MUTEX },
 430         { .compatible = "mediatek,mt2701-disp-pwm",
 431           .data = (void *)MTK_DISP_BLS },
 432         { .compatible = "mediatek,mt8173-disp-pwm",
 433           .data = (void *)MTK_DISP_PWM },
 434         { .compatible = "mediatek,mt8173-disp-od",
 435           .data = (void *)MTK_DISP_OD },
 436         { }
 437 };
 438
 439 static int mtk_drm_probe(struct platform_device *pdev)
 440 {
 441         struct device *dev = &pdev->dev;
 442         struct mtk_drm_private *private;
 443         struct resource *mem;
 444         struct device_node *node;
 445         struct component_match *match = NULL;
 446         int ret;
 447         int i;
 448
 449         private = devm_kzalloc(dev, sizeof(*private), GFP_KERNEL);
 450         if (!private)
 451                 return -ENOMEM;
 452
 453         mutex_init(&private->commit.lock);
 454         INIT_WORK(&private->commit.work, mtk_atomic_work);
 455         private->data = of_device_get_match_data(dev);
 456
 457         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 458         private->config_regs = devm_ioremap_resource(dev, mem);
 459         if (IS_ERR(private->config_regs)) {
 460                 ret = PTR_ERR(private->config_regs);
 461                 dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
 462                         ret);
 463                 return ret;
 464         }
 465
 466         /* Iterate over sibling DISP function blocks */
 467         for_each_child_of_node(dev->of_node->parent, node) {
 468                 const struct of_device_id *of_id;
 469                 enum mtk_ddp_comp_type comp_type;
 470                 int comp_id;
 471
 472                 of_id = of_match_node(mtk_ddp_comp_dt_ids, node);
 473                 if (!of_id)
 474                         continue;
 475
 476                 if (!of_device_is_available(node)) {
 477                         dev_dbg(dev, "Skipping disabled component %pOF\n",
 478                                 node);
 479                         continue;
 480                 }
 481
 482                 comp_type = (enum mtk_ddp_comp_type)of_id->data;
 483
 484                 if (comp_type == MTK_DISP_MUTEX) {
 485                         private->mutex_node = of_node_get(node);
 486                         continue;
 487                 }
 488
 489                 comp_id = mtk_ddp_comp_get_id(node, comp_type);
 490                 if (comp_id < 0) {
 491                         dev_warn(dev, "Skipping unknown component %pOF\n",
 492                                  node);
 493                         continue;
 494                 }
 495
 496                 private->comp_node[comp_id] = of_node_get(node);
 497
 498                 /*
 499                  * Currently only the COLOR, OVL, RDMA, DSI, and DPI blocks have
 500                  * separate component platform drivers and initialize their own
 501                  * DDP component structure. The others are initialized here.
 502                  */
 503                 if (comp_type == MTK_DISP_COLOR ||
 504                     comp_type == MTK_DISP_OVL ||
 505                     comp_type == MTK_DISP_RDMA ||
 506                     comp_type == MTK_DSI ||
 507                     comp_type == MTK_DPI) {
 508                         dev_info(dev, "Adding component match for %pOF\n",
 509                                  node);
 510                         drm_of_component_match_add(dev, &match, compare_of,
 511                                                    node);
 512                 } else {
 513                         struct mtk_ddp_comp *comp;
 514
 515                         comp = devm_kzalloc(dev, sizeof(*comp), GFP_KERNEL);
 516                         if (!comp) {
 517                                 ret = -ENOMEM;
 518                                 goto err_node;
 519                         }
 520
 521                         ret = mtk_ddp_comp_init(dev, node, comp, comp_id, NULL);
 522                         if (ret)
 523                                 goto err_node;
 524
 525                         private->ddp_comp[comp_id] = comp;
 526                 }
 527         }
 528
 529         if (!private->mutex_node) {
 530                 dev_err(dev, "Failed to find disp-mutex node\n");
 531                 ret = -ENODEV;
 532                 goto err_node;
 533         }
 534
 535         pm_runtime_enable(dev);
 536
 537         platform_set_drvdata(pdev, private);
 538
 539         ret = component_master_add_with_match(dev, &mtk_drm_ops, match);
 540         if (ret)
 541                 goto err_pm;
 542
 543         return 0;
 544
 545 err_pm:
 546         pm_runtime_disable(dev);
 547 err_node:
 548         of_node_put(private->mutex_node);
 549         for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
 550                 of_node_put(private->comp_node[i]);
 551         return ret;
 552 }
 553
 554 static int mtk_drm_remove(struct platform_device *pdev)
 555 {
 556         struct mtk_drm_private *private = platform_get_drvdata(pdev);
 557         int i;
 558
 559         component_master_del(&pdev->dev, &mtk_drm_ops);
 560         pm_runtime_disable(&pdev->dev);
 561         of_node_put(private->mutex_node);
 562         for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
 563                 of_node_put(private->comp_node[i]);
 564
 565         return 0;
 566 }
 567
 568 #ifdef CONFIG_PM_SLEEP
 569 static int mtk_drm_sys_suspend(struct device *dev)
 570 {
 571         struct mtk_drm_private *private = dev_get_drvdata(dev);
 572         struct drm_device *drm = private->drm;
 573         int ret;
 574
 575         ret = drm_mode_config_helper_suspend(drm);
 576         DRM_DEBUG_DRIVER("mtk_drm_sys_suspend\n");
 577
 578         return ret;
 579 }
 580
 581 static int mtk_drm_sys_resume(struct device *dev)
 582 {
 583         struct mtk_drm_private *private = dev_get_drvdata(dev);
 584         struct drm_device *drm = private->drm;
 585         int ret;
 586
 587         ret = drm_mode_config_helper_resume(drm);
 588         DRM_DEBUG_DRIVER("mtk_drm_sys_resume\n");
 589
 590         return ret;
 591 }
 592 #endif
 593
 594 static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend,
 595                          mtk_drm_sys_resume);
 596
 597 static const struct of_device_id mtk_drm_of_ids[] = {
 598         { .compatible = "mediatek,mt2701-mmsys",
 599           .data = &mt2701_mmsys_driver_data},
 600         { .compatible = "mediatek,mt2712-mmsys",
 601           .data = &mt2712_mmsys_driver_data},
 602         { .compatible = "mediatek,mt8173-mmsys",
 603           .data = &mt8173_mmsys_driver_data},
 604         { }
 605 };
 606
 607 static struct platform_driver mtk_drm_platform_driver = {
 608         .probe  = mtk_drm_probe,
 609         .remove = mtk_drm_remove,
 610         .driver = {
 611                 .name   = "mediatek-drm",
 612                 .of_match_table = mtk_drm_of_ids,
 613                 .pm     = &mtk_drm_pm_ops,
 614         },
 615 };
 616
 617 static struct platform_driver * const mtk_drm_drivers[] = {
 618         &mtk_ddp_driver,
 619         &mtk_disp_color_driver,
 620         &mtk_disp_ovl_driver,
 621         &mtk_disp_rdma_driver,
 622         &mtk_dpi_driver,
 623         &mtk_drm_platform_driver,
 624         &mtk_dsi_driver,
 625         &mtk_mipi_tx_driver,
 626 };
 627
 628 static int __init mtk_drm_init(void)
 629 {
 630         return platform_register_drivers(mtk_drm_drivers,
 631                                          ARRAY_SIZE(mtk_drm_drivers));
 632 }
 633
 634 static void __exit mtk_drm_exit(void)
 635 {
 636         platform_unregister_drivers(mtk_drm_drivers,
 637                                     ARRAY_SIZE(mtk_drm_drivers));
 638 }
 639
 640 module_init(mtk_drm_init);
 641 module_exit(mtk_drm_exit);
 642
 643 MODULE_AUTHOR("YT SHEN <yt.shen@mediatek.com>");
 644 MODULE_DESCRIPTION("Mediatek SoC DRM driver");
 645 MODULE_LICENSE("GPL v2");