drivers/gpu/drm/mediatek/mtk_drm_drv.c

   1 /*
   2  * Copyright (c) 2015 MediaTek Inc.
   3  * Author: YT SHEN <[email protected]>
   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 mt2712_mtk_ddp_main[] = {
 150         DDP_COMPONENT_OVL0,
 151         DDP_COMPONENT_COLOR0,
 152         DDP_COMPONENT_AAL0,
 153         DDP_COMPONENT_OD0,
 154         DDP_COMPONENT_RDMA0,
 155         DDP_COMPONENT_DPI0,
 156         DDP_COMPONENT_PWM0,
 157 };
 158
 159 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_ext[] = {
 160         DDP_COMPONENT_OVL1,
 161         DDP_COMPONENT_COLOR1,
 162         DDP_COMPONENT_AAL1,
 163         DDP_COMPONENT_OD1,
 164         DDP_COMPONENT_RDMA1,
 165         DDP_COMPONENT_DPI1,
 166         DDP_COMPONENT_PWM1,
 167 };
 168
 169 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_third[] = {
 170         DDP_COMPONENT_RDMA2,
 171         DDP_COMPONENT_DSI3,
 172         DDP_COMPONENT_PWM2,
 173 };
 174
 175 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_main[] = {
 176         DDP_COMPONENT_OVL0,
 177         DDP_COMPONENT_COLOR0,
 178         DDP_COMPONENT_AAL0,
 179         DDP_COMPONENT_OD0,
 180         DDP_COMPONENT_RDMA0,
 181         DDP_COMPONENT_UFOE,
 182         DDP_COMPONENT_DSI0,
 183         DDP_COMPONENT_PWM0,
 184 };
 185
 186 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_ext[] = {
 187         DDP_COMPONENT_OVL1,
 188         DDP_COMPONENT_COLOR1,
 189         DDP_COMPONENT_GAMMA,
 190         DDP_COMPONENT_RDMA1,
 191         DDP_COMPONENT_DPI0,
 192 };
 193
 194 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
 195         .main_path = mt2701_mtk_ddp_main,
 196         .main_len = ARRAY_SIZE(mt2701_mtk_ddp_main),
 197         .ext_path = mt2701_mtk_ddp_ext,
 198         .ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext),
 199         .shadow_register = true,
 200 };
 201
 202 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
 203         .main_path = mt2712_mtk_ddp_main,
 204         .main_len = ARRAY_SIZE(mt2712_mtk_ddp_main),
 205         .ext_path = mt2712_mtk_ddp_ext,
 206         .ext_len = ARRAY_SIZE(mt2712_mtk_ddp_ext),
 207         .third_path = mt2712_mtk_ddp_third,
 208         .third_len = ARRAY_SIZE(mt2712_mtk_ddp_third),
 209 };
 210
 211 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
 212         .main_path = mt8173_mtk_ddp_main,
 213         .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main),
 214         .ext_path = mt8173_mtk_ddp_ext,
 215         .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
 216 };
 217
 218 static int mtk_drm_kms_init(struct drm_device *drm)
 219 {
 220         struct mtk_drm_private *private = drm->dev_private;
 221         struct platform_device *pdev;
 222         struct device_node *np;
 223         int ret;
 224
 225         if (!iommu_present(&platform_bus_type))
 226                 return -EPROBE_DEFER;
 227
 228         pdev = of_find_device_by_node(private->mutex_node);
 229         if (!pdev) {
 230                 dev_err(drm->dev, "Waiting for disp-mutex device %pOF\n",
 231                         private->mutex_node);
 232                 of_node_put(private->mutex_node);
 233                 return -EPROBE_DEFER;
 234         }
 235         private->mutex_dev = &pdev->dev;
 236
 237         drm_mode_config_init(drm);
 238
 239         drm->mode_config.min_width = 64;
 240         drm->mode_config.min_height = 64;
 241
 242         /*
 243          * set max width and height as default value(4096x4096).
 244          * this value would be used to check framebuffer size limitation
 245          * at drm_mode_addfb().
 246          */
 247         drm->mode_config.max_width = 4096;
 248         drm->mode_config.max_height = 4096;
 249         drm->mode_config.funcs = &mtk_drm_mode_config_funcs;
 250
 251         ret = component_bind_all(drm->dev, drm);
 252         if (ret)
 253                 goto err_config_cleanup;
 254
 255         /*
 256          * We currently support two fixed data streams, each optional,
 257          * and each statically assigned to a crtc:
 258          * OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0 ...
 259          */
 260         ret = mtk_drm_crtc_create(drm, private->data->main_path,
 261                                   private->data->main_len);
 262         if (ret < 0)
 263                 goto err_component_unbind;
 264         /* ... and OVL1 -> COLOR1 -> GAMMA -> RDMA1 -> DPI0. */
 265         ret = mtk_drm_crtc_create(drm, private->data->ext_path,
 266                                   private->data->ext_len);
 267         if (ret < 0)
 268                 goto err_component_unbind;
 269
 270         ret = mtk_drm_crtc_create(drm, private->data->third_path,
 271                                   private->data->third_len);
 272         if (ret < 0)
 273                 goto err_component_unbind;
 274
 275         /* Use OVL device for all DMA memory allocations */
 276         np = private->comp_node[private->data->main_path[0]] ?:
 277              private->comp_node[private->data->ext_path[0]];
 278         pdev = of_find_device_by_node(np);
 279         if (!pdev) {
 280                 ret = -ENODEV;
 281                 dev_err(drm->dev, "Need at least one OVL device\n");
 282                 goto err_component_unbind;
 283         }
 284
 285         private->dma_dev = &pdev->dev;
 286
 287         /*
 288          * We don't use the drm_irq_install() helpers provided by the DRM
 289          * core, so we need to set this manually in order to allow the
 290          * DRM_IOCTL_WAIT_VBLANK to operate correctly.
 291          */
 292         drm->irq_enabled = true;
 293         ret = drm_vblank_init(drm, MAX_CRTC);
 294         if (ret < 0)
 295                 goto err_component_unbind;
 296
 297         drm_kms_helper_poll_init(drm);
 298         drm_mode_config_reset(drm);
 299
 300         return 0;
 301
 302 err_component_unbind:
 303         component_unbind_all(drm->dev, drm);
 304 err_config_cleanup:
 305         drm_mode_config_cleanup(drm);
 306
 307         return ret;
 308 }
 309
 310 static void mtk_drm_kms_deinit(struct drm_device *drm)
 311 {
 312         drm_kms_helper_poll_fini(drm);
 313
 314         component_unbind_all(drm->dev, drm);
 315         drm_mode_config_cleanup(drm);
 316 }
 317
 318 static const struct file_operations mtk_drm_fops = {
 319         .owner = THIS_MODULE,
 320         .open = drm_open,
 321         .release = drm_release,
 322         .unlocked_ioctl = drm_ioctl,
 323         .mmap = mtk_drm_gem_mmap,
 324         .poll = drm_poll,
 325         .read = drm_read,
 326         .compat_ioctl = drm_compat_ioctl,
 327 };
 328
 329 static struct drm_driver mtk_drm_driver = {
 330         .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
 331                            DRIVER_ATOMIC,
 332
 333         .gem_free_object_unlocked = mtk_drm_gem_free_object,
 334         .gem_vm_ops = &drm_gem_cma_vm_ops,
 335         .dumb_create = mtk_drm_gem_dumb_create,
 336
 337         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 338         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 339         .gem_prime_export = drm_gem_prime_export,
 340         .gem_prime_import = drm_gem_prime_import,
 341         .gem_prime_get_sg_table = mtk_gem_prime_get_sg_table,
 342         .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
 343         .gem_prime_mmap = mtk_drm_gem_mmap_buf,
 344         .fops = &mtk_drm_fops,
 345
 346         .name = DRIVER_NAME,
 347         .desc = DRIVER_DESC,
 348         .date = DRIVER_DATE,
 349         .major = DRIVER_MAJOR,
 350         .minor = DRIVER_MINOR,
 351 };
 352
 353 static int compare_of(struct device *dev, void *data)
 354 {
 355         return dev->of_node == data;
 356 }
 357
 358 static int mtk_drm_bind(struct device *dev)
 359 {
 360         struct mtk_drm_private *private = dev_get_drvdata(dev);
 361         struct drm_device *drm;
 362         int ret;
 363
 364         drm = drm_dev_alloc(&mtk_drm_driver, dev);
 365         if (IS_ERR(drm))
 366                 return PTR_ERR(drm);
 367
 368         drm->dev_private = private;
 369         private->drm = drm;
 370
 371         ret = mtk_drm_kms_init(drm);
 372         if (ret < 0)
 373                 goto err_free;
 374
 375         ret = drm_dev_register(drm, 0);
 376         if (ret < 0)
 377                 goto err_deinit;
 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         drm_dev_put(private->drm);
 394         private->drm = NULL;
 395 }
 396
 397 static const struct component_master_ops mtk_drm_ops = {
 398         .bind           = mtk_drm_bind,
 399         .unbind         = mtk_drm_unbind,
 400 };
 401
 402 static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
 403         { .compatible = "mediatek,mt2701-disp-ovl",
 404           .data = (void *)MTK_DISP_OVL },
 405         { .compatible = "mediatek,mt8173-disp-ovl",
 406           .data = (void *)MTK_DISP_OVL },
 407         { .compatible = "mediatek,mt2701-disp-rdma",
 408           .data = (void *)MTK_DISP_RDMA },
 409         { .compatible = "mediatek,mt8173-disp-rdma",
 410           .data = (void *)MTK_DISP_RDMA },
 411         { .compatible = "mediatek,mt8173-disp-wdma",
 412           .data = (void *)MTK_DISP_WDMA },
 413         { .compatible = "mediatek,mt2701-disp-color",
 414           .data = (void *)MTK_DISP_COLOR },
 415         { .compatible = "mediatek,mt8173-disp-color",
 416           .data = (void *)MTK_DISP_COLOR },
 417         { .compatible = "mediatek,mt8173-disp-aal",
 418           .data = (void *)MTK_DISP_AAL},
 419         { .compatible = "mediatek,mt8173-disp-gamma",
 420           .data = (void *)MTK_DISP_GAMMA, },
 421         { .compatible = "mediatek,mt8173-disp-ufoe",
 422           .data = (void *)MTK_DISP_UFOE },
 423         { .compatible = "mediatek,mt2701-dsi",
 424           .data = (void *)MTK_DSI },
 425         { .compatible = "mediatek,mt8173-dsi",
 426           .data = (void *)MTK_DSI },
 427         { .compatible = "mediatek,mt2701-dpi",
 428           .data = (void *)MTK_DPI },
 429         { .compatible = "mediatek,mt8173-dpi",
 430           .data = (void *)MTK_DPI },
 431         { .compatible = "mediatek,mt2701-disp-mutex",
 432           .data = (void *)MTK_DISP_MUTEX },
 433         { .compatible = "mediatek,mt2712-disp-mutex",
 434           .data = (void *)MTK_DISP_MUTEX },
 435         { .compatible = "mediatek,mt8173-disp-mutex",
 436           .data = (void *)MTK_DISP_MUTEX },
 437         { .compatible = "mediatek,mt2701-disp-pwm",
 438           .data = (void *)MTK_DISP_BLS },
 439         { .compatible = "mediatek,mt8173-disp-pwm",
 440           .data = (void *)MTK_DISP_PWM },
 441         { .compatible = "mediatek,mt8173-disp-od",
 442           .data = (void *)MTK_DISP_OD },
 443         { }
 444 };
 445
 446 static int mtk_drm_probe(struct platform_device *pdev)
 447 {
 448         struct device *dev = &pdev->dev;
 449         struct mtk_drm_private *private;
 450         struct resource *mem;
 451         struct device_node *node;
 452         struct component_match *match = NULL;
 453         int ret;
 454         int i;
 455
 456         private = devm_kzalloc(dev, sizeof(*private), GFP_KERNEL);
 457         if (!private)
 458                 return -ENOMEM;
 459
 460         mutex_init(&private->commit.lock);
 461         INIT_WORK(&private->commit.work, mtk_atomic_work);
 462         private->data = of_device_get_match_data(dev);
 463
 464         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 465         private->config_regs = devm_ioremap_resource(dev, mem);
 466         if (IS_ERR(private->config_regs)) {
 467                 ret = PTR_ERR(private->config_regs);
 468                 dev_err(dev, "Failed to ioremap mmsys-config resource: %d\n",
 469                         ret);
 470                 return ret;
 471         }
 472
 473         /* Iterate over sibling DISP function blocks */
 474         for_each_child_of_node(dev->of_node->parent, node) {
 475                 const struct of_device_id *of_id;
 476                 enum mtk_ddp_comp_type comp_type;
 477                 int comp_id;
 478
 479                 of_id = of_match_node(mtk_ddp_comp_dt_ids, node);
 480                 if (!of_id)
 481                         continue;
 482
 483                 if (!of_device_is_available(node)) {
 484                         dev_dbg(dev, "Skipping disabled component %pOF\n",
 485                                 node);
 486                         continue;
 487                 }
 488
 489                 comp_type = (enum mtk_ddp_comp_type)of_id->data;
 490
 491                 if (comp_type == MTK_DISP_MUTEX) {
 492                         private->mutex_node = of_node_get(node);
 493                         continue;
 494                 }
 495
 496                 comp_id = mtk_ddp_comp_get_id(node, comp_type);
 497                 if (comp_id < 0) {
 498                         dev_warn(dev, "Skipping unknown component %pOF\n",
 499                                  node);
 500                         continue;
 501                 }
 502
 503                 private->comp_node[comp_id] = of_node_get(node);
 504
 505                 /*
 506                  * Currently only the COLOR, OVL, RDMA, DSI, and DPI blocks have
 507                  * separate component platform drivers and initialize their own
 508                  * DDP component structure. The others are initialized here.
 509                  */
 510                 if (comp_type == MTK_DISP_COLOR ||
 511                     comp_type == MTK_DISP_OVL ||
 512                     comp_type == MTK_DISP_RDMA ||
 513                     comp_type == MTK_DSI ||
 514                     comp_type == MTK_DPI) {
 515                         dev_info(dev, "Adding component match for %pOF\n",
 516                                  node);
 517                         drm_of_component_match_add(dev, &match, compare_of,
 518                                                    node);
 519                 } else {
 520                         struct mtk_ddp_comp *comp;
 521
 522                         comp = devm_kzalloc(dev, sizeof(*comp), GFP_KERNEL);
 523                         if (!comp) {
 524                                 ret = -ENOMEM;
 525                                 goto err_node;
 526                         }
 527
 528                         ret = mtk_ddp_comp_init(dev, node, comp, comp_id, NULL);
 529                         if (ret)
 530                                 goto err_node;
 531
 532                         private->ddp_comp[comp_id] = comp;
 533                 }
 534         }
 535
 536         if (!private->mutex_node) {
 537                 dev_err(dev, "Failed to find disp-mutex node\n");
 538                 ret = -ENODEV;
 539                 goto err_node;
 540         }
 541
 542         pm_runtime_enable(dev);
 543
 544         platform_set_drvdata(pdev, private);
 545
 546         ret = component_master_add_with_match(dev, &mtk_drm_ops, match);
 547         if (ret)
 548                 goto err_pm;
 549
 550         return 0;
 551
 552 err_pm:
 553         pm_runtime_disable(dev);
 554 err_node:
 555         of_node_put(private->mutex_node);
 556         for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
 557                 of_node_put(private->comp_node[i]);
 558         return ret;
 559 }
 560
 561 static int mtk_drm_remove(struct platform_device *pdev)
 562 {
 563         struct mtk_drm_private *private = platform_get_drvdata(pdev);
 564         struct drm_device *drm = private->drm;
 565         int i;
 566
 567         drm_dev_unregister(drm);
 568         mtk_drm_kms_deinit(drm);
 569         drm_dev_put(drm);
 570
 571         component_master_del(&pdev->dev, &mtk_drm_ops);
 572         pm_runtime_disable(&pdev->dev);
 573         of_node_put(private->mutex_node);
 574         for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
 575                 of_node_put(private->comp_node[i]);
 576
 577         return 0;
 578 }
 579
 580 #ifdef CONFIG_PM_SLEEP
 581 static int mtk_drm_sys_suspend(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_suspend(drm);
 588         DRM_DEBUG_DRIVER("mtk_drm_sys_suspend\n");
 589
 590         return ret;
 591 }
 592
 593 static int mtk_drm_sys_resume(struct device *dev)
 594 {
 595         struct mtk_drm_private *private = dev_get_drvdata(dev);
 596         struct drm_device *drm = private->drm;
 597         int ret;
 598
 599         ret = drm_mode_config_helper_resume(drm);
 600         DRM_DEBUG_DRIVER("mtk_drm_sys_resume\n");
 601
 602         return ret;
 603 }
 604 #endif
 605
 606 static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend,
 607                          mtk_drm_sys_resume);
 608
 609 static const struct of_device_id mtk_drm_of_ids[] = {
 610         { .compatible = "mediatek,mt2701-mmsys",
 611           .data = &mt2701_mmsys_driver_data},
 612         { .compatible = "mediatek,mt2712-mmsys",
 613           .data = &mt2712_mmsys_driver_data},
 614         { .compatible = "mediatek,mt8173-mmsys",
 615           .data = &mt8173_mmsys_driver_data},
 616         { }
 617 };
 618
 619 static struct platform_driver mtk_drm_platform_driver = {
 620         .probe  = mtk_drm_probe,
 621         .remove = mtk_drm_remove,
 622         .driver = {
 623                 .name   = "mediatek-drm",
 624                 .of_match_table = mtk_drm_of_ids,
 625                 .pm     = &mtk_drm_pm_ops,
 626         },
 627 };
 628
 629 static struct platform_driver * const mtk_drm_drivers[] = {
 630         &mtk_ddp_driver,
 631         &mtk_disp_color_driver,
 632         &mtk_disp_ovl_driver,
 633         &mtk_disp_rdma_driver,
 634         &mtk_dpi_driver,
 635         &mtk_drm_platform_driver,
 636         &mtk_dsi_driver,
 637         &mtk_mipi_tx_driver,
 638 };
 639
 640 static int __init mtk_drm_init(void)
 641 {
 642         return platform_register_drivers(mtk_drm_drivers,
 643                                          ARRAY_SIZE(mtk_drm_drivers));
 644 }
 645
 646 static void __exit mtk_drm_exit(void)
 647 {
 648         platform_unregister_drivers(mtk_drm_drivers,
 649                                     ARRAY_SIZE(mtk_drm_drivers));
 650 }
 651
 652 module_init(mtk_drm_init);
 653 module_exit(mtk_drm_exit);
 654
 655 MODULE_AUTHOR("YT SHEN <[email protected]>");
 656 MODULE_DESCRIPTION("Mediatek SoC DRM driver");
 657 MODULE_LICENSE("GPL v2");