drivers/gpu/drm/mediatek/mtk_drm_drv.c

   1 /*
   2  * Copyright (c) 2015 MediaTek Inc.
   3  * Author: YT SHEN <yt.shen@mediatek.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <drm/drmP.h>
  16 #include <drm/drm_atomic.h>
  17 #include <drm/drm_atomic_helper.h>
  18 #include <drm/drm_crtc_helper.h>
  19 #include <drm/drm_gem.h>
  20 #include <drm/drm_gem_cma_helper.h>
  21 #include <drm/drm_of.h>
  22 #include <linux/component.h>
  23 #include <linux/iommu.h>
  24 #include <linux/of_address.h>
  25 #include <linux/of_platform.h>
  26 #include <linux/pm_runtime.h>
  27
  28 #include "mtk_drm_crtc.h"
  29 #include "mtk_drm_ddp.h"
  30 #include "mtk_drm_ddp_comp.h"
  31 #include "mtk_drm_drv.h"
  32 #include "mtk_drm_fb.h"
  33 #include "mtk_drm_gem.h"
  34
  35 #define DRIVER_NAME "mediatek"
  36 #define DRIVER_DESC "Mediatek SoC DRM"
  37 #define DRIVER_DATE "20150513"
  38 #define DRIVER_MAJOR 1
  39 #define DRIVER_MINOR 0
  40
  41 static void mtk_atomic_schedule(struct mtk_drm_private *private,
  42                                 struct drm_atomic_state *state)
  43 {
  44         private->commit.state = state;
  45         schedule_work(&private->commit.work);
  46 }
  47
  48 static void mtk_atomic_wait_for_fences(struct drm_atomic_state *state)
  49 {
  50         struct drm_plane *plane;
  51         struct drm_plane_state *new_plane_state;
  52         int i;
  53
  54         for_each_new_plane_in_state(state, plane, new_plane_state, i)
  55                 mtk_fb_wait(new_plane_state->fb);
  56 }
  57
  58 static void mtk_atomic_complete(struct mtk_drm_private *private,
  59                                 struct drm_atomic_state *state)
  60 {
  61         struct drm_device *drm = private->drm;
  62
  63         mtk_atomic_wait_for_fences(state);
  64
  65         /*
  66          * Mediatek drm supports runtime PM, so plane registers cannot be
  67          * written when their crtc is disabled.
  68          *
  69          * The comment for drm_atomic_helper_commit states:
  70          *     For drivers supporting runtime PM the recommended sequence is
  71          *
  72          *     drm_atomic_helper_commit_modeset_disables(dev, state);
  73          *     drm_atomic_helper_commit_modeset_enables(dev, state);
  74          *     drm_atomic_helper_commit_planes(dev, state,
  75          *                                     DRM_PLANE_COMMIT_ACTIVE_ONLY);
  76          *
  77          * See the kerneldoc entries for these three functions for more details.
  78          */
  79         drm_atomic_helper_commit_modeset_disables(drm, state);
  80         drm_atomic_helper_commit_modeset_enables(drm, state);
  81         drm_atomic_helper_commit_planes(drm, state,
  82                                         DRM_PLANE_COMMIT_ACTIVE_ONLY);
  83
  84         drm_atomic_helper_wait_for_vblanks(drm, state);
  85
  86         drm_atomic_helper_cleanup_planes(drm, state);
  87         drm_atomic_state_put(state);
  88 }
  89
  90 static void mtk_atomic_work(struct work_struct *work)
  91 {
  92         struct mtk_drm_private *private = container_of(work,
  93                         struct mtk_drm_private, commit.work);
  94
  95         mtk_atomic_complete(private, private->commit.state);
  96 }
  97
  98 static int mtk_atomic_commit(struct drm_device *drm,
  99                              struct drm_atomic_state *state,
 100                              bool async)
 101 {
 102         struct mtk_drm_private *private = drm->dev_private;
 103         int ret;
 104
 105         ret = drm_atomic_helper_prepare_planes(drm, state);
 106         if (ret)
 107                 return ret;
 108
 109         mutex_lock(&private->commit.lock);
 110         flush_work(&private->commit.work);
 111
 112         ret = drm_atomic_helper_swap_state(state, true);
 113         if (ret) {
 114                 mutex_unlock(&private->commit.lock);
 115                 drm_atomic_helper_cleanup_planes(drm, state);
 116                 return ret;
 117         }
 118
 119         drm_atomic_state_get(state);
 120         if (async)
 121                 mtk_atomic_schedule(private, state);
 122         else
 123                 mtk_atomic_complete(private, state);
 124
 125         mutex_unlock(&private->commit.lock);
 126
 127         return 0;
 128 }
 129
 130 static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = {
 131         .fb_create = mtk_drm_mode_fb_create,
 132         .atomic_check = drm_atomic_helper_check,
 133         .atomic_commit = mtk_atomic_commit,
 134 };
 135
 136 static const enum mtk_ddp_comp_id mt2701_mtk_ddp_main[] = {
 137         DDP_COMPONENT_OVL0,
 138         DDP_COMPONENT_RDMA0,
 139         DDP_COMPONENT_COLOR0,
 140         DDP_COMPONENT_BLS,
 141         DDP_COMPONENT_DSI0,
 142 };
 143
 144 static const enum mtk_ddp_comp_id mt2701_mtk_ddp_ext[] = {
 145         DDP_COMPONENT_RDMA1,
 146         DDP_COMPONENT_DPI0,
 147 };
 148
 149 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_main[] = {
 150         DDP_COMPONENT_OVL0,
 151         DDP_COMPONENT_COLOR0,
 152         DDP_COMPONENT_AAL,
 153         DDP_COMPONENT_OD,
 154         DDP_COMPONENT_RDMA0,
 155         DDP_COMPONENT_UFOE,
 156         DDP_COMPONENT_DSI0,
 157         DDP_COMPONENT_PWM0,
 158 };
 159
 160 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_ext[] = {
 161         DDP_COMPONENT_OVL1,
 162         DDP_COMPONENT_COLOR1,
 163         DDP_COMPONENT_GAMMA,
 164         DDP_COMPONENT_RDMA1,
 165         DDP_COMPONENT_DPI0,
 166 };
 167
 168 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
 169         .main_path = mt2701_mtk_ddp_main,
 170         .main_len = ARRAY_SIZE(mt2701_mtk_ddp_main),
 171         .ext_path = mt2701_mtk_ddp_ext,
 172         .ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext),
 173         .shadow_register = true,
 174 };
 175
 176 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
 177         .main_path = mt8173_mtk_ddp_main,
 178         .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main),
 179         .ext_path = mt8173_mtk_ddp_ext,
 180         .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
 181 };
 182
 183 static int mtk_drm_kms_init(struct drm_device *drm)
 184 {
 185         struct mtk_drm_private *private = drm->dev_private;
 186         struct platform_device *pdev;
 187         struct device_node *np;
 188         struct device *dma_dev;
 189         int ret;
 190
 191         if (!iommu_present(&platform_bus_type))
 192                 return -EPROBE_DEFER;
 193
 194         pdev = of_find_device_by_node(private->mutex_node);
 195         if (!pdev) {
 196                 dev_err(drm->dev, "Waiting for disp-mutex device %pOF\n",
 197                         private->mutex_node);
 198                 of_node_put(private->mutex_node);
 199                 return -EPROBE_DEFER;
 200         }
 201         private->mutex_dev = &pdev->dev;
 202
 203         drm_mode_config_init(drm);
 204
 205         drm->mode_config.min_width = 64;
 206         drm->mode_config.min_height = 64;
 207
 208         /*
 209          * set max width and height as default value(4096x4096).
 210          * this value would be used to check framebuffer size limitation
 211          * at drm_mode_addfb().
 212          */
 213         drm->mode_config.max_width = 4096;
 214         drm->mode_config.max_height = 4096;
 215         drm->mode_config.funcs = &mtk_drm_mode_config_funcs;
 216
 217         ret = component_bind_all(drm->dev, drm);
 218         if (ret)
 219                 goto err_config_cleanup;
 220
 221         /*
 222          * We currently support two fixed data streams, each optional,
 223          * and each statically assigned to a crtc:
 224          * OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0 ...
 225          */
 226         ret = mtk_drm_crtc_create(drm, private->data->main_path,
 227                                   private->data->main_len);
 228         if (ret < 0)
 229                 goto err_component_unbind;
 230         /* ... and OVL1 -> COLOR1 -> GAMMA -> RDMA1 -> DPI0. */
 231         ret = mtk_drm_crtc_create(drm, private->data->ext_path,
 232                                   private->data->ext_len);
 233         if (ret < 0)
 234                 goto err_component_unbind;
 235
 236         /* Use OVL device for all DMA memory allocations */
 237         np = private->comp_node[private->data->main_path[0]] ?:
 238              private->comp_node[private->data->ext_path[0]];
 239         pdev = of_find_device_by_node(np);
 240         if (!pdev) {
 241                 ret = -ENODEV;
 242                 dev_err(drm->dev, "Need at least one OVL device\n");
 243                 goto err_component_unbind;
 244         }
 245
 246         dma_dev = &pdev->dev;
 247         private->dma_dev = dma_dev;
 248
 249         /*
 250          * Configure the DMA segment size to make sure we get contiguous IOVA
 251          * when importing PRIME buffers.
 252          */
 253         if (!dma_dev->dma_parms) {
 254                 private->dma_parms_allocated = true;
 255                 dma_dev->dma_parms =
 256                         devm_kzalloc(drm->dev, sizeof(*dma_dev->dma_parms),
 257                                      GFP_KERNEL);
 258         }
 259         if (!dma_dev->dma_parms) {
 260                 ret = -ENOMEM;
 261                 goto err_component_unbind;
 262         }
 263
 264         ret = dma_set_max_seg_size(dma_dev, (unsigned int)DMA_BIT_MASK(32));
 265         if (ret) {
 266                 dev_err(dma_dev, "Failed to set DMA segment size\n");
 267                 goto err_unset_dma_parms;
 268         }
 269
 270         /*
 271          * We don't use the drm_irq_install() helpers provided by the DRM
 272          * core, so we need to set this manually in order to allow the
 273          * DRM_IOCTL_WAIT_VBLANK to operate correctly.
 274          */
 275         drm->irq_enabled = true;
 276         ret = drm_vblank_init(drm, MAX_CRTC);
 277         if (ret < 0)
 278                 goto err_unset_dma_parms;
 279
 280         drm_kms_helper_poll_init(drm);
 281         drm_mode_config_reset(drm);
 282
 283         return 0;
 284
 285 err_unset_dma_parms:
 286         if (private->dma_parms_allocated)
 287                 dma_dev->dma_parms = NULL;
 288 err_component_unbind:
 289         component_unbind_all(drm->dev, drm);
 290 err_config_cleanup:
 291         drm_mode_config_cleanup(drm);
 292
 293         return ret;
 294 }
 295
 296 static void mtk_drm_kms_deinit(struct drm_device *drm)
 297 {
 298         struct mtk_drm_private *private = drm->dev_private;
 299
 300         drm_kms_helper_poll_fini(drm);
 301         drm_atomic_helper_shutdown(drm);
 302
 303         if (private->dma_parms_allocated)
 304                 private->dma_dev->dma_parms = NULL;
 305
 306         component_unbind_all(drm->dev, drm);
 307         drm_mode_config_cleanup(drm);
 308 }
 309
 310 static const struct file_operations mtk_drm_fops = {
 311         .owner = THIS_MODULE,
 312         .open = drm_open,
 313         .release = drm_release,
 314         .unlocked_ioctl = drm_ioctl,
 315         .mmap = mtk_drm_gem_mmap,
 316         .poll = drm_poll,
 317         .read = drm_read,
 318         .compat_ioctl = drm_compat_ioctl,
 319 };
 320
 321 /*
 322  * We need to override this because the device used to import the memory is
 323  * not dev->dev, as drm_gem_prime_import() expects.
 324  */
 325 struct drm_gem_object *mtk_drm_gem_prime_import(struct drm_device *dev,
 326                                                 struct dma_buf *dma_buf)
 327 {
 328         struct mtk_drm_private *private = dev->dev_private;
 329
 330         return drm_gem_prime_import_dev(dev, dma_buf, private->dma_dev);
 331 }
 332
 333 static struct drm_driver mtk_drm_driver = {
 334         .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
 335                            DRIVER_ATOMIC,
 336
 337         .gem_free_object_unlocked = mtk_drm_gem_free_object,
 338         .gem_vm_ops = &drm_gem_cma_vm_ops,
 339         .dumb_create = mtk_drm_gem_dumb_create,
 340
 341         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 342         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 343         .gem_prime_export = drm_gem_prime_export,
 344         .gem_prime_import = mtk_drm_gem_prime_import,
 345         .gem_prime_get_sg_table = mtk_gem_prime_get_sg_table,
 346         .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
 347         .gem_prime_mmap = mtk_drm_gem_mmap_buf,
 348         .fops = &mtk_drm_fops,
 349
 350         .name = DRIVER_NAME,
 351         .desc = DRIVER_DESC,
 352         .date = DRIVER_DATE,
 353         .major = DRIVER_MAJOR,
 354         .minor = DRIVER_MINOR,
 355 };
 356
 357 static int compare_of(struct device *dev, void *data)
 358 {
 359         return dev->of_node == data;
 360 }
 361
 362 static int mtk_drm_bind(struct device *dev)
 363 {
 364         struct mtk_drm_private *private = dev_get_drvdata(dev);
 365         struct drm_device *drm;
 366         int ret;
 367
 368         drm = drm_dev_alloc(&mtk_drm_driver, dev);
 369         if (IS_ERR(drm))
 370                 return PTR_ERR(drm);
 371
 372         drm->dev_private = private;
 373         private->drm = drm;
 374
 375         ret = mtk_drm_kms_init(drm);
 376         if (ret < 0)
 377                 goto err_free;
 378
 379         ret = drm_dev_register(drm, 0);
 380         if (ret < 0)
 381                 goto err_deinit;
 382
 383         return 0;
 384
 385 err_deinit:
 386         mtk_drm_kms_deinit(drm);
 387 err_free:
 388         drm_dev_unref(drm);
 389         return ret;
 390 }
 391
 392 static void mtk_drm_unbind(struct device *dev)
 393 {
 394         struct mtk_drm_private *private = dev_get_drvdata(dev);
 395
 396         drm_dev_unregister(private->drm);
 397         drm_dev_unref(private->drm);
 398         private->drm = NULL;
 399 }
 400
 401 static const struct component_master_ops mtk_drm_ops = {
 402         .bind           = mtk_drm_bind,
 403         .unbind         = mtk_drm_unbind,
 404 };
 405
 406 static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
 407         { .compatible = "mediatek,mt2701-disp-ovl",   .data = (void *)MTK_DISP_OVL },
 408         { .compatible = "mediatek,mt8173-disp-ovl",   .data = (void *)MTK_DISP_OVL },
 409         { .compatible = "mediatek,mt2701-disp-rdma",  .data = (void *)MTK_DISP_RDMA },
 410         { .compatible = "mediatek,mt8173-disp-rdma",  .data = (void *)MTK_DISP_RDMA },
 411         { .compatible = "mediatek,mt8173-disp-wdma",  .data = (void *)MTK_DISP_WDMA },
 412         { .compatible = "mediatek,mt2701-disp-color", .data = (void *)MTK_DISP_COLOR },
 413         { .compatible = "mediatek,mt8173-disp-color", .data = (void *)MTK_DISP_COLOR },
 414         { .compatible = "mediatek,mt8173-disp-aal",   .data = (void *)MTK_DISP_AAL},
 415         { .compatible = "mediatek,mt8173-disp-gamma", .data = (void *)MTK_DISP_GAMMA, },
 416         { .compatible = "mediatek,mt8173-disp-ufoe",  .data = (void *)MTK_DISP_UFOE },
 417         { .compatible = "mediatek,mt2701-dsi",        .data = (void *)MTK_DSI },
 418         { .compatible = "mediatek,mt8173-dsi",        .data = (void *)MTK_DSI },
 419         { .compatible = "mediatek,mt8173-dpi",        .data = (void *)MTK_DPI },
 420         { .compatible = "mediatek,mt2701-disp-mutex", .data = (void *)MTK_DISP_MUTEX },
 421         { .compatible = "mediatek,mt8173-disp-mutex", .data = (void *)MTK_DISP_MUTEX },
 422         { .compatible = "mediatek,mt2701-disp-pwm",   .data = (void *)MTK_DISP_BLS },
 423         { .compatible = "mediatek,mt8173-disp-pwm",   .data = (void *)MTK_DISP_PWM },
 424         { .compatible = "mediatek,mt8173-disp-od",    .data = (void *)MTK_DISP_OD },
 425         { }
 426 };
 427
 428 static int mtk_drm_probe(struct platform_device *pdev)
 429 {
 430         struct device *dev = &pdev->dev;
 431         struct mtk_drm_private *private;
 432         struct resource *mem;
 433         struct device_node *node;
 434         struct component_match *match = NULL;
 435         int ret;
 436         int i;
 437
 438         private = devm_kzalloc(dev, sizeof(*private), GFP_KERNEL);
 439         if (!private)
 440                 return -ENOMEM;
 441
 442         mutex_init(&private->commit.lock);
 443         INIT_WORK(&private->commit.work, mtk_atomic_work);
 444         private->data = of_device_get_match_data(dev);
 445
 446         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 447         private->config_regs = devm_ioremap_resource(dev, mem);
 448         if (IS_ERR(private->config_regs)) {
 449                 ret = PTR_ERR(private->config_regs);
 450                 dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
 451                         ret);
 452                 return ret;
 453         }
 454
 455         /* Iterate over sibling DISP function blocks */
 456         for_each_child_of_node(dev->of_node->parent, node) {
 457                 const struct of_device_id *of_id;
 458                 enum mtk_ddp_comp_type comp_type;
 459                 int comp_id;
 460
 461                 of_id = of_match_node(mtk_ddp_comp_dt_ids, node);
 462                 if (!of_id)
 463                         continue;
 464
 465                 if (!of_device_is_available(node)) {
 466                         dev_dbg(dev, "Skipping disabled component %pOF\n",
 467                                 node);
 468                         continue;
 469                 }
 470
 471                 comp_type = (enum mtk_ddp_comp_type)of_id->data;
 472
 473                 if (comp_type == MTK_DISP_MUTEX) {
 474                         private->mutex_node = of_node_get(node);
 475                         continue;
 476                 }
 477
 478                 comp_id = mtk_ddp_comp_get_id(node, comp_type);
 479                 if (comp_id < 0) {
 480                         dev_warn(dev, "Skipping unknown component %pOF\n",
 481                                  node);
 482                         continue;
 483                 }
 484
 485                 private->comp_node[comp_id] = of_node_get(node);
 486
 487                 /*
 488                  * Currently only the COLOR, OVL, RDMA, DSI, and DPI blocks have
 489                  * separate component platform drivers and initialize their own
 490                  * DDP component structure. The others are initialized here.
 491                  */
 492                 if (comp_type == MTK_DISP_COLOR ||
 493                     comp_type == MTK_DISP_OVL ||
 494                     comp_type == MTK_DISP_RDMA ||
 495                     comp_type == MTK_DSI ||
 496                     comp_type == MTK_DPI) {
 497                         dev_info(dev, "Adding component match for %pOF\n",
 498                                  node);
 499                         drm_of_component_match_add(dev, &match, compare_of,
 500                                                    node);
 501                 } else {
 502                         struct mtk_ddp_comp *comp;
 503
 504                         comp = devm_kzalloc(dev, sizeof(*comp), GFP_KERNEL);
 505                         if (!comp) {
 506                                 ret = -ENOMEM;
 507                                 of_node_put(node);
 508                                 goto err_node;
 509                         }
 510
 511                         ret = mtk_ddp_comp_init(dev, node, comp, comp_id, NULL);
 512                         if (ret) {
 513                                 of_node_put(node);
 514                                 goto err_node;
 515                         }
 516
 517                         private->ddp_comp[comp_id] = comp;
 518                 }
 519         }
 520
 521         if (!private->mutex_node) {
 522                 dev_err(dev, "Failed to find disp-mutex node\n");
 523                 ret = -ENODEV;
 524                 goto err_node;
 525         }
 526
 527         pm_runtime_enable(dev);
 528
 529         platform_set_drvdata(pdev, private);
 530
 531         ret = component_master_add_with_match(dev, &mtk_drm_ops, match);
 532         if (ret)
 533                 goto err_pm;
 534
 535         return 0;
 536
 537 err_pm:
 538         pm_runtime_disable(dev);
 539 err_node:
 540         of_node_put(private->mutex_node);
 541         for (i = 0; i < DDP_COMPONENT_ID_MAX; i++) {
 542                 of_node_put(private->comp_node[i]);
 543                 if (private->ddp_comp[i]) {
 544                         put_device(private->ddp_comp[i]->larb_dev);
 545                         private->ddp_comp[i] = NULL;
 546                 }
 547         }
 548         return ret;
 549 }
 550
 551 static int mtk_drm_remove(struct platform_device *pdev)
 552 {
 553         struct mtk_drm_private *private = platform_get_drvdata(pdev);
 554         struct drm_device *drm = private->drm;
 555         int i;
 556
 557         drm_dev_unregister(drm);
 558         mtk_drm_kms_deinit(drm);
 559         drm_dev_unref(drm);
 560
 561         component_master_del(&pdev->dev, &mtk_drm_ops);
 562         pm_runtime_disable(&pdev->dev);
 563         of_node_put(private->mutex_node);
 564         for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
 565                 of_node_put(private->comp_node[i]);
 566
 567         return 0;
 568 }
 569
 570 #ifdef CONFIG_PM_SLEEP
 571 static int mtk_drm_sys_suspend(struct device *dev)
 572 {
 573         struct mtk_drm_private *private = dev_get_drvdata(dev);
 574         struct drm_device *drm = private->drm;
 575
 576         drm_kms_helper_poll_disable(drm);
 577
 578         private->suspend_state = drm_atomic_helper_suspend(drm);
 579         if (IS_ERR(private->suspend_state)) {
 580                 drm_kms_helper_poll_enable(drm);
 581                 return PTR_ERR(private->suspend_state);
 582         }
 583
 584         DRM_DEBUG_DRIVER("mtk_drm_sys_suspend\n");
 585         return 0;
 586 }
 587
 588 static int mtk_drm_sys_resume(struct device *dev)
 589 {
 590         struct mtk_drm_private *private = dev_get_drvdata(dev);
 591         struct drm_device *drm = private->drm;
 592
 593         drm_atomic_helper_resume(drm, private->suspend_state);
 594         drm_kms_helper_poll_enable(drm);
 595
 596         DRM_DEBUG_DRIVER("mtk_drm_sys_resume\n");
 597         return 0;
 598 }
 599 #endif
 600
 601 static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend,
 602                          mtk_drm_sys_resume);
 603
 604 static const struct of_device_id mtk_drm_of_ids[] = {
 605         { .compatible = "mediatek,mt2701-mmsys",
 606           .data = &mt2701_mmsys_driver_data},
 607         { .compatible = "mediatek,mt8173-mmsys",
 608           .data = &mt8173_mmsys_driver_data},
 609         { }
 610 };
 611
 612 static struct platform_driver mtk_drm_platform_driver = {
 613         .probe  = mtk_drm_probe,
 614         .remove = mtk_drm_remove,
 615         .driver = {
 616                 .name   = "mediatek-drm",
 617                 .of_match_table = mtk_drm_of_ids,
 618                 .pm     = &mtk_drm_pm_ops,
 619         },
 620 };
 621
 622 static struct platform_driver * const mtk_drm_drivers[] = {
 623         &mtk_ddp_driver,
 624         &mtk_disp_color_driver,
 625         &mtk_disp_ovl_driver,
 626         &mtk_disp_rdma_driver,
 627         &mtk_dpi_driver,
 628         &mtk_drm_platform_driver,
 629         &mtk_dsi_driver,
 630         &mtk_mipi_tx_driver,
 631 };
 632
 633 static int __init mtk_drm_init(void)
 634 {
 635         return platform_register_drivers(mtk_drm_drivers,
 636                                          ARRAY_SIZE(mtk_drm_drivers));
 637 }
 638
 639 static void __exit mtk_drm_exit(void)
 640 {
 641         platform_unregister_drivers(mtk_drm_drivers,
 642                                     ARRAY_SIZE(mtk_drm_drivers));
 643 }
 644
 645 module_init(mtk_drm_init);
 646 module_exit(mtk_drm_exit);
 647
 648 MODULE_AUTHOR("YT SHEN <yt.shen@mediatek.com>");
 649 MODULE_DESCRIPTION("Mediatek SoC DRM driver");
 650 MODULE_LICENSE("GPL v2");