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 <drm/drmP.h>
   8 #include <drm/drm_atomic.h>
   9 #include <drm/drm_atomic_helper.h>
  10 #include <drm/drm_fb_helper.h>
  11 #include <drm/drm_gem.h>
  12 #include <drm/drm_gem_cma_helper.h>
  13 #include <drm/drm_of.h>
  14 #include <drm/drm_probe_helper.h>
  15 #include <linux/component.h>
  16 #include <linux/iommu.h>
  17 #include <linux/of_address.h>
  18 #include <linux/of_platform.h>
  19 #include <linux/pm_runtime.h>
  20
  21 #include "mtk_drm_crtc.h"
  22 #include "mtk_drm_ddp.h"
  23 #include "mtk_drm_ddp_comp.h"
  24 #include "mtk_drm_drv.h"
  25 #include "mtk_drm_fb.h"
  26 #include "mtk_drm_gem.h"
  27
  28 #define DRIVER_NAME "mediatek"
  29 #define DRIVER_DESC "Mediatek SoC DRM"
  30 #define DRIVER_DATE "20150513"
  31 #define DRIVER_MAJOR 1
  32 #define DRIVER_MINOR 0
  33
  34 static void mtk_atomic_schedule(struct mtk_drm_private *private,
  35                                 struct drm_atomic_state *state)
  36 {
  37         private->commit.state = state;
  38         schedule_work(&private->commit.work);
  39 }
  40
  41 static void mtk_atomic_wait_for_fences(struct drm_atomic_state *state)
  42 {
  43         struct drm_plane *plane;
  44         struct drm_plane_state *new_plane_state;
  45         int i;
  46
  47         for_each_new_plane_in_state(state, plane, new_plane_state, i)
  48                 mtk_fb_wait(new_plane_state->fb);
  49 }
  50
  51 static void mtk_atomic_complete(struct mtk_drm_private *private,
  52                                 struct drm_atomic_state *state)
  53 {
  54         struct drm_device *drm = private->drm;
  55
  56         mtk_atomic_wait_for_fences(state);
  57
  58         /*
  59          * Mediatek drm supports runtime PM, so plane registers cannot be
  60          * written when their crtc is disabled.
  61          *
  62          * The comment for drm_atomic_helper_commit states:
  63          *     For drivers supporting runtime PM the recommended sequence is
  64          *
  65          *     drm_atomic_helper_commit_modeset_disables(dev, state);
  66          *     drm_atomic_helper_commit_modeset_enables(dev, state);
  67          *     drm_atomic_helper_commit_planes(dev, state,
  68          *                                     DRM_PLANE_COMMIT_ACTIVE_ONLY);
  69          *
  70          * See the kerneldoc entries for these three functions for more details.
  71          */
  72         drm_atomic_helper_commit_modeset_disables(drm, state);
  73         drm_atomic_helper_commit_modeset_enables(drm, state);
  74         drm_atomic_helper_commit_planes(drm, state,
  75                                         DRM_PLANE_COMMIT_ACTIVE_ONLY);
  76
  77         drm_atomic_helper_wait_for_vblanks(drm, state);
  78
  79         drm_atomic_helper_cleanup_planes(drm, state);
  80         drm_atomic_state_put(state);
  81 }
  82
  83 static void mtk_atomic_work(struct work_struct *work)
  84 {
  85         struct mtk_drm_private *private = container_of(work,
  86                         struct mtk_drm_private, commit.work);
  87
  88         mtk_atomic_complete(private, private->commit.state);
  89 }
  90
  91 static int mtk_atomic_commit(struct drm_device *drm,
  92                              struct drm_atomic_state *state,
  93                              bool async)
  94 {
  95         struct mtk_drm_private *private = drm->dev_private;
  96         int ret;
  97
  98         ret = drm_atomic_helper_prepare_planes(drm, state);
  99         if (ret)
 100                 return ret;
 101
 102         mutex_lock(&private->commit.lock);
 103         flush_work(&private->commit.work);
 104
 105         ret = drm_atomic_helper_swap_state(state, true);
 106         if (ret) {
 107                 mutex_unlock(&private->commit.lock);
 108                 drm_atomic_helper_cleanup_planes(drm, state);
 109                 return ret;
 110         }
 111
 112         drm_atomic_state_get(state);
 113         if (async)
 114                 mtk_atomic_schedule(private, state);
 115         else
 116                 mtk_atomic_complete(private, state);
 117
 118         mutex_unlock(&private->commit.lock);
 119
 120         return 0;
 121 }
 122
 123 static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = {
 124         .fb_create = mtk_drm_mode_fb_create,
 125         .atomic_check = drm_atomic_helper_check,
 126         .atomic_commit = mtk_atomic_commit,
 127 };
 128
 129 static const enum mtk_ddp_comp_id mt2701_mtk_ddp_main[] = {
 130         DDP_COMPONENT_OVL0,
 131         DDP_COMPONENT_RDMA0,
 132         DDP_COMPONENT_COLOR0,
 133         DDP_COMPONENT_BLS,
 134         DDP_COMPONENT_DSI0,
 135 };
 136
 137 static const enum mtk_ddp_comp_id mt2701_mtk_ddp_ext[] = {
 138         DDP_COMPONENT_RDMA1,
 139         DDP_COMPONENT_DPI0,
 140 };
 141
 142 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_main[] = {
 143         DDP_COMPONENT_OVL0,
 144         DDP_COMPONENT_COLOR0,
 145         DDP_COMPONENT_AAL0,
 146         DDP_COMPONENT_OD0,
 147         DDP_COMPONENT_RDMA0,
 148         DDP_COMPONENT_DPI0,
 149         DDP_COMPONENT_PWM0,
 150 };
 151
 152 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_ext[] = {
 153         DDP_COMPONENT_OVL1,
 154         DDP_COMPONENT_COLOR1,
 155         DDP_COMPONENT_AAL1,
 156         DDP_COMPONENT_OD1,
 157         DDP_COMPONENT_RDMA1,
 158         DDP_COMPONENT_DPI1,
 159         DDP_COMPONENT_PWM1,
 160 };
 161
 162 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_third[] = {
 163         DDP_COMPONENT_RDMA2,
 164         DDP_COMPONENT_DSI3,
 165         DDP_COMPONENT_PWM2,
 166 };
 167
 168 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_main[] = {
 169         DDP_COMPONENT_OVL0,
 170         DDP_COMPONENT_COLOR0,
 171         DDP_COMPONENT_AAL0,
 172         DDP_COMPONENT_OD0,
 173         DDP_COMPONENT_RDMA0,
 174         DDP_COMPONENT_UFOE,
 175         DDP_COMPONENT_DSI0,
 176         DDP_COMPONENT_PWM0,
 177 };
 178
 179 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_ext[] = {
 180         DDP_COMPONENT_OVL1,
 181         DDP_COMPONENT_COLOR1,
 182         DDP_COMPONENT_GAMMA,
 183         DDP_COMPONENT_RDMA1,
 184         DDP_COMPONENT_DPI0,
 185 };
 186
 187 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
 188         .main_path = mt2701_mtk_ddp_main,
 189         .main_len = ARRAY_SIZE(mt2701_mtk_ddp_main),
 190         .ext_path = mt2701_mtk_ddp_ext,
 191         .ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext),
 192         .shadow_register = true,
 193 };
 194
 195 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
 196         .main_path = mt2712_mtk_ddp_main,
 197         .main_len = ARRAY_SIZE(mt2712_mtk_ddp_main),
 198         .ext_path = mt2712_mtk_ddp_ext,
 199         .ext_len = ARRAY_SIZE(mt2712_mtk_ddp_ext),
 200         .third_path = mt2712_mtk_ddp_third,
 201         .third_len = ARRAY_SIZE(mt2712_mtk_ddp_third),
 202 };
 203
 204 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
 205         .main_path = mt8173_mtk_ddp_main,
 206         .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main),
 207         .ext_path = mt8173_mtk_ddp_ext,
 208         .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
 209 };
 210
 211 static int mtk_drm_kms_init(struct drm_device *drm)
 212 {
 213         struct mtk_drm_private *private = drm->dev_private;
 214         struct platform_device *pdev;
 215         struct device_node *np;
 216         int ret;
 217
 218         if (!iommu_present(&platform_bus_type))
 219                 return -EPROBE_DEFER;
 220
 221         pdev = of_find_device_by_node(private->mutex_node);
 222         if (!pdev) {
 223                 dev_err(drm->dev, "Waiting for disp-mutex device %pOF\n",
 224                         private->mutex_node);
 225                 of_node_put(private->mutex_node);
 226                 return -EPROBE_DEFER;
 227         }
 228         private->mutex_dev = &pdev->dev;
 229
 230         drm_mode_config_init(drm);
 231
 232         drm->mode_config.min_width = 64;
 233         drm->mode_config.min_height = 64;
 234
 235         /*
 236          * set max width and height as default value(4096x4096).
 237          * this value would be used to check framebuffer size limitation
 238          * at drm_mode_addfb().
 239          */
 240         drm->mode_config.max_width = 4096;
 241         drm->mode_config.max_height = 4096;
 242         drm->mode_config.funcs = &mtk_drm_mode_config_funcs;
 243
 244         ret = component_bind_all(drm->dev, drm);
 245         if (ret)
 246                 goto err_config_cleanup;
 247
 248         /*
 249          * We currently support two fixed data streams, each optional,
 250          * and each statically assigned to a crtc:
 251          * OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0 ...
 252          */
 253         ret = mtk_drm_crtc_create(drm, private->data->main_path,
 254                                   private->data->main_len);
 255         if (ret < 0)
 256                 goto err_component_unbind;
 257         /* ... and OVL1 -> COLOR1 -> GAMMA -> RDMA1 -> DPI0. */
 258         ret = mtk_drm_crtc_create(drm, private->data->ext_path,
 259                                   private->data->ext_len);
 260         if (ret < 0)
 261                 goto err_component_unbind;
 262
 263         ret = mtk_drm_crtc_create(drm, private->data->third_path,
 264                                   private->data->third_len);
 265         if (ret < 0)
 266                 goto err_component_unbind;
 267
 268         /* Use OVL device for all DMA memory allocations */
 269         np = private->comp_node[private->data->main_path[0]] ?:
 270              private->comp_node[private->data->ext_path[0]];
 271         pdev = of_find_device_by_node(np);
 272         if (!pdev) {
 273                 ret = -ENODEV;
 274                 dev_err(drm->dev, "Need at least one OVL device\n");
 275                 goto err_component_unbind;
 276         }
 277
 278         private->dma_dev = &pdev->dev;
 279
 280         /*
 281          * We don't use the drm_irq_install() helpers provided by the DRM
 282          * core, so we need to set this manually in order to allow the
 283          * DRM_IOCTL_WAIT_VBLANK to operate correctly.
 284          */
 285         drm->irq_enabled = true;
 286         ret = drm_vblank_init(drm, MAX_CRTC);
 287         if (ret < 0)
 288                 goto err_component_unbind;
 289
 290         drm_kms_helper_poll_init(drm);
 291         drm_mode_config_reset(drm);
 292
 293         return 0;
 294
 295 err_component_unbind:
 296         component_unbind_all(drm->dev, drm);
 297 err_config_cleanup:
 298         drm_mode_config_cleanup(drm);
 299
 300         return ret;
 301 }
 302
 303 static void mtk_drm_kms_deinit(struct drm_device *drm)
 304 {
 305         drm_kms_helper_poll_fini(drm);
 306         drm_atomic_helper_shutdown(drm);
 307
 308         component_unbind_all(drm->dev, drm);
 309         drm_mode_config_cleanup(drm);
 310 }
 311
 312 static const struct file_operations mtk_drm_fops = {
 313         .owner = THIS_MODULE,
 314         .open = drm_open,
 315         .release = drm_release,
 316         .unlocked_ioctl = drm_ioctl,
 317         .mmap = mtk_drm_gem_mmap,
 318         .poll = drm_poll,
 319         .read = drm_read,
 320         .compat_ioctl = drm_compat_ioctl,
 321 };
 322
 323 static struct drm_driver mtk_drm_driver = {
 324         .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
 325                            DRIVER_ATOMIC,
 326
 327         .gem_free_object_unlocked = mtk_drm_gem_free_object,
 328         .gem_vm_ops = &drm_gem_cma_vm_ops,
 329         .dumb_create = mtk_drm_gem_dumb_create,
 330
 331         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 332         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 333         .gem_prime_export = drm_gem_prime_export,
 334         .gem_prime_import = drm_gem_prime_import,
 335         .gem_prime_get_sg_table = mtk_gem_prime_get_sg_table,
 336         .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
 337         .gem_prime_mmap = mtk_drm_gem_mmap_buf,
 338         .gem_prime_vmap = mtk_drm_gem_prime_vmap,
 339         .gem_prime_vunmap = mtk_drm_gem_prime_vunmap,
 340         .fops = &mtk_drm_fops,
 341
 342         .name = DRIVER_NAME,
 343         .desc = DRIVER_DESC,
 344         .date = DRIVER_DATE,
 345         .major = DRIVER_MAJOR,
 346         .minor = DRIVER_MINOR,
 347 };
 348
 349 static int compare_of(struct device *dev, void *data)
 350 {
 351         return dev->of_node == data;
 352 }
 353
 354 static int mtk_drm_bind(struct device *dev)
 355 {
 356         struct mtk_drm_private *private = dev_get_drvdata(dev);
 357         struct drm_device *drm;
 358         int ret;
 359
 360         drm = drm_dev_alloc(&mtk_drm_driver, dev);
 361         if (IS_ERR(drm))
 362                 return PTR_ERR(drm);
 363
 364         drm->dev_private = private;
 365         private->drm = drm;
 366
 367         ret = mtk_drm_kms_init(drm);
 368         if (ret < 0)
 369                 goto err_free;
 370
 371         ret = drm_dev_register(drm, 0);
 372         if (ret < 0)
 373                 goto err_deinit;
 374
 375         ret = drm_fbdev_generic_setup(drm, 32);
 376         if (ret)
 377                 DRM_ERROR("Failed to initialize fbdev: %d\n", ret);
 378
 379         return 0;
 380
 381 err_deinit:
 382         mtk_drm_kms_deinit(drm);
 383 err_free:
 384         drm_dev_put(drm);
 385         return ret;
 386 }
 387
 388 static void mtk_drm_unbind(struct device *dev)
 389 {
 390         struct mtk_drm_private *private = dev_get_drvdata(dev);
 391
 392         drm_dev_unregister(private->drm);
 393         mtk_drm_kms_deinit(private->drm);
 394         drm_dev_put(private->drm);
 395         private->num_pipes = 0;
 396         private->drm = NULL;
 397 }
 398
 399 static const struct component_master_ops mtk_drm_ops = {
 400         .bind           = mtk_drm_bind,
 401         .unbind         = mtk_drm_unbind,
 402 };
 403
 404 static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
 405         { .compatible = "mediatek,mt2701-disp-ovl",
 406           .data = (void *)MTK_DISP_OVL },
 407         { .compatible = "mediatek,mt8173-disp-ovl",
 408           .data = (void *)MTK_DISP_OVL },
 409         { .compatible = "mediatek,mt2701-disp-rdma",
 410           .data = (void *)MTK_DISP_RDMA },
 411         { .compatible = "mediatek,mt8173-disp-rdma",
 412           .data = (void *)MTK_DISP_RDMA },
 413         { .compatible = "mediatek,mt8173-disp-wdma",
 414           .data = (void *)MTK_DISP_WDMA },
 415         { .compatible = "mediatek,mt2701-disp-color",
 416           .data = (void *)MTK_DISP_COLOR },
 417         { .compatible = "mediatek,mt8173-disp-color",
 418           .data = (void *)MTK_DISP_COLOR },
 419         { .compatible = "mediatek,mt8173-disp-aal",
 420           .data = (void *)MTK_DISP_AAL},
 421         { .compatible = "mediatek,mt8173-disp-gamma",
 422           .data = (void *)MTK_DISP_GAMMA, },
 423         { .compatible = "mediatek,mt8173-disp-ufoe",
 424           .data = (void *)MTK_DISP_UFOE },
 425         { .compatible = "mediatek,mt2701-dsi",
 426           .data = (void *)MTK_DSI },
 427         { .compatible = "mediatek,mt8173-dsi",
 428           .data = (void *)MTK_DSI },
 429         { .compatible = "mediatek,mt2701-dpi",
 430           .data = (void *)MTK_DPI },
 431         { .compatible = "mediatek,mt8173-dpi",
 432           .data = (void *)MTK_DPI },
 433         { .compatible = "mediatek,mt2701-disp-mutex",
 434           .data = (void *)MTK_DISP_MUTEX },
 435         { .compatible = "mediatek,mt2712-disp-mutex",
 436           .data = (void *)MTK_DISP_MUTEX },
 437         { .compatible = "mediatek,mt8173-disp-mutex",
 438           .data = (void *)MTK_DISP_MUTEX },
 439         { .compatible = "mediatek,mt2701-disp-pwm",
 440           .data = (void *)MTK_DISP_BLS },
 441         { .compatible = "mediatek,mt8173-disp-pwm",
 442           .data = (void *)MTK_DISP_PWM },
 443         { .compatible = "mediatek,mt8173-disp-od",
 444           .data = (void *)MTK_DISP_OD },
 445         { }
 446 };
 447
 448 static int mtk_drm_probe(struct platform_device *pdev)
 449 {
 450         struct device *dev = &pdev->dev;
 451         struct mtk_drm_private *private;
 452         struct resource *mem;
 453         struct device_node *node;
 454         struct component_match *match = NULL;
 455         int ret;
 456         int i;
 457
 458         private = devm_kzalloc(dev, sizeof(*private), GFP_KERNEL);
 459         if (!private)
 460                 return -ENOMEM;
 461
 462         mutex_init(&private->commit.lock);
 463         INIT_WORK(&private->commit.work, mtk_atomic_work);
 464         private->data = of_device_get_match_data(dev);
 465
 466         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 467         private->config_regs = devm_ioremap_resource(dev, mem);
 468         if (IS_ERR(private->config_regs)) {
 469                 ret = PTR_ERR(private->config_regs);
 470                 dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
 471                         ret);
 472                 return ret;
 473         }
 474
 475         /* Iterate over sibling DISP function blocks */
 476         for_each_child_of_node(dev->of_node->parent, node) {
 477                 const struct of_device_id *of_id;
 478                 enum mtk_ddp_comp_type comp_type;
 479                 int comp_id;
 480
 481                 of_id = of_match_node(mtk_ddp_comp_dt_ids, node);
 482                 if (!of_id)
 483                         continue;
 484
 485                 if (!of_device_is_available(node)) {
 486                         dev_dbg(dev, "Skipping disabled component %pOF\n",
 487                                 node);
 488                         continue;
 489                 }
 490
 491                 comp_type = (enum mtk_ddp_comp_type)of_id->data;
 492
 493                 if (comp_type == MTK_DISP_MUTEX) {
 494                         private->mutex_node = of_node_get(node);
 495                         continue;
 496                 }
 497
 498                 comp_id = mtk_ddp_comp_get_id(node, comp_type);
 499                 if (comp_id < 0) {
 500                         dev_warn(dev, "Skipping unknown component %pOF\n",
 501                                  node);
 502                         continue;
 503                 }
 504
 505                 private->comp_node[comp_id] = of_node_get(node);
 506
 507                 /*
 508                  * Currently only the COLOR, OVL, RDMA, DSI, and DPI blocks have
 509                  * separate component platform drivers and initialize their own
 510                  * DDP component structure. The others are initialized here.
 511                  */
 512                 if (comp_type == MTK_DISP_COLOR ||
 513                     comp_type == MTK_DISP_OVL ||
 514                     comp_type == MTK_DISP_RDMA ||
 515                     comp_type == MTK_DSI ||
 516                     comp_type == MTK_DPI) {
 517                         dev_info(dev, "Adding component match for %pOF\n",
 518                                  node);
 519                         drm_of_component_match_add(dev, &match, compare_of,
 520                                                    node);
 521                 } else {
 522                         struct mtk_ddp_comp *comp;
 523
 524                         comp = devm_kzalloc(dev, sizeof(*comp), GFP_KERNEL);
 525                         if (!comp) {
 526                                 ret = -ENOMEM;
 527                                 goto err_node;
 528                         }
 529
 530                         ret = mtk_ddp_comp_init(dev, node, comp, comp_id, NULL);
 531                         if (ret)
 532                                 goto err_node;
 533
 534                         private->ddp_comp[comp_id] = comp;
 535                 }
 536         }
 537
 538         if (!private->mutex_node) {
 539                 dev_err(dev, "Failed to find disp-mutex node\n");
 540                 ret = -ENODEV;
 541                 goto err_node;
 542         }
 543
 544         pm_runtime_enable(dev);
 545
 546         platform_set_drvdata(pdev, private);
 547
 548         ret = component_master_add_with_match(dev, &mtk_drm_ops, match);
 549         if (ret)
 550                 goto err_pm;
 551
 552         return 0;
 553
 554 err_pm:
 555         pm_runtime_disable(dev);
 556 err_node:
 557         of_node_put(private->mutex_node);
 558         for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
 559                 of_node_put(private->comp_node[i]);
 560         return ret;
 561 }
 562
 563 static int mtk_drm_remove(struct platform_device *pdev)
 564 {
 565         struct mtk_drm_private *private = platform_get_drvdata(pdev);
 566         int i;
 567
 568         component_master_del(&pdev->dev, &mtk_drm_ops);
 569         pm_runtime_disable(&pdev->dev);
 570         of_node_put(private->mutex_node);
 571         for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
 572                 of_node_put(private->comp_node[i]);
 573
 574         return 0;
 575 }
 576
 577 #ifdef CONFIG_PM_SLEEP
 578 static int mtk_drm_sys_suspend(struct device *dev)
 579 {
 580         struct mtk_drm_private *private = dev_get_drvdata(dev);
 581         struct drm_device *drm = private->drm;
 582         int ret;
 583
 584         ret = drm_mode_config_helper_suspend(drm);
 585         DRM_DEBUG_DRIVER("mtk_drm_sys_suspend\n");
 586
 587         return ret;
 588 }
 589
 590 static int mtk_drm_sys_resume(struct device *dev)
 591 {
 592         struct mtk_drm_private *private = dev_get_drvdata(dev);
 593         struct drm_device *drm = private->drm;
 594         int ret;
 595
 596         ret = drm_mode_config_helper_resume(drm);
 597         DRM_DEBUG_DRIVER("mtk_drm_sys_resume\n");
 598
 599         return ret;
 600 }
 601 #endif
 602
 603 static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend,
 604                          mtk_drm_sys_resume);
 605
 606 static const struct of_device_id mtk_drm_of_ids[] = {
 607         { .compatible = "mediatek,mt2701-mmsys",
 608           .data = &mt2701_mmsys_driver_data},
 609         { .compatible = "mediatek,mt2712-mmsys",
 610           .data = &mt2712_mmsys_driver_data},
 611         { .compatible = "mediatek,mt8173-mmsys",
 612           .data = &mt8173_mmsys_driver_data},
 613         { }
 614 };
 615
 616 static struct platform_driver mtk_drm_platform_driver = {
 617         .probe  = mtk_drm_probe,
 618         .remove = mtk_drm_remove,
 619         .driver = {
 620                 .name   = "mediatek-drm",
 621                 .of_match_table = mtk_drm_of_ids,
 622                 .pm     = &mtk_drm_pm_ops,
 623         },
 624 };
 625
 626 static struct platform_driver * const mtk_drm_drivers[] = {
 627         &mtk_ddp_driver,
 628         &mtk_disp_color_driver,
 629         &mtk_disp_ovl_driver,
 630         &mtk_disp_rdma_driver,
 631         &mtk_dpi_driver,
 632         &mtk_drm_platform_driver,
 633         &mtk_dsi_driver,
 634         &mtk_mipi_tx_driver,
 635 };
 636
 637 static int __init mtk_drm_init(void)
 638 {
 639         return platform_register_drivers(mtk_drm_drivers,
 640                                          ARRAY_SIZE(mtk_drm_drivers));
 641 }
 642
 643 static void __exit mtk_drm_exit(void)
 644 {
 645         platform_unregister_drivers(mtk_drm_drivers,
 646                                     ARRAY_SIZE(mtk_drm_drivers));
 647 }
 648
 649 module_init(mtk_drm_init);
 650 module_exit(mtk_drm_exit);
 651
 652 MODULE_AUTHOR("YT SHEN <yt.shen@mediatek.com>");
 653 MODULE_DESCRIPTION("Mediatek SoC DRM driver");
 654 MODULE_LICENSE("GPL v2");