drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2016 MediaTek Inc.
   4  * Author: PC Chen <[email protected]>
   5  *         Tiffany Lin <[email protected]>
   6  */
   7
   8 #include <linux/bitfield.h>
   9 #include <linux/slab.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/irq.h>
  12 #include <linux/mfd/syscon.h>
  13 #include <linux/module.h>
  14 #include <linux/of.h>
  15 #include <linux/of_platform.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/pm_runtime.h>
  18 #include <linux/regmap.h>
  19 #include <media/v4l2-event.h>
  20 #include <media/v4l2-mem2mem.h>
  21 #include <media/videobuf2-dma-contig.h>
  22 #include <media/v4l2-device.h>
  23
  24 #include "mtk_vcodec_dec.h"
  25 #include "mtk_vcodec_dec_hw.h"
  26 #include "mtk_vcodec_dec_pm.h"
  27 #include "../common/mtk_vcodec_intr.h"
  28
  29 static int mtk_vcodec_get_hw_count(struct mtk_vcodec_dec_ctx *ctx, struct mtk_vcodec_dec_dev *dev)
  30 {
  31         switch (dev->vdec_pdata->hw_arch) {
  32         case MTK_VDEC_PURE_SINGLE_CORE:
  33                 return MTK_VDEC_ONE_CORE;
  34         case MTK_VDEC_LAT_SINGLE_CORE:
  35                 return MTK_VDEC_ONE_LAT_ONE_CORE;
  36         default:
  37                 mtk_v4l2_vdec_err(ctx, "hw arch %d not supported", dev->vdec_pdata->hw_arch);
  38                 return MTK_VDEC_NO_HW;
  39         }
  40 }
  41
  42 static bool mtk_vcodec_is_hw_active(struct mtk_vcodec_dec_dev *dev)
  43 {
  44         u32 cg_status;
  45
  46         if (dev->vdecsys_regmap)
  47                 return !regmap_test_bits(dev->vdecsys_regmap, VDEC_HW_ACTIVE_ADDR,
  48                                          VDEC_HW_ACTIVE_MASK);
  49
  50         cg_status = readl(dev->reg_base[VDEC_SYS] + VDEC_HW_ACTIVE_ADDR);
  51         return !FIELD_GET(VDEC_HW_ACTIVE_MASK, cg_status);
  52 }
  53
  54 static irqreturn_t mtk_vcodec_dec_irq_handler(int irq, void *priv)
  55 {
  56         struct mtk_vcodec_dec_dev *dev = priv;
  57         struct mtk_vcodec_dec_ctx *ctx;
  58         unsigned int dec_done_status = 0;
  59         void __iomem *vdec_misc_addr = dev->reg_base[VDEC_MISC] +
  60                                         VDEC_IRQ_CFG_REG;
  61
  62         ctx = mtk_vcodec_get_curr_ctx(dev, MTK_VDEC_CORE);
  63
  64         if (!mtk_vcodec_is_hw_active(dev)) {
  65                 mtk_v4l2_vdec_err(ctx, "DEC ISR, VDEC active is not 0x0");
  66                 return IRQ_HANDLED;
  67         }
  68
  69         dec_done_status = readl(vdec_misc_addr);
  70         ctx->irq_status = dec_done_status;
  71         if ((dec_done_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) !=
  72                 MTK_VDEC_IRQ_STATUS_DEC_SUCCESS)
  73                 return IRQ_HANDLED;
  74
  75         /* clear interrupt */
  76         writel((readl(vdec_misc_addr) | VDEC_IRQ_CFG),
  77                 dev->reg_base[VDEC_MISC] + VDEC_IRQ_CFG_REG);
  78         writel((readl(vdec_misc_addr) & ~VDEC_IRQ_CLR),
  79                 dev->reg_base[VDEC_MISC] + VDEC_IRQ_CFG_REG);
  80
  81         wake_up_dec_ctx(ctx, MTK_INST_IRQ_RECEIVED, 0);
  82
  83         mtk_v4l2_vdec_dbg(3, ctx, "wake up ctx %d, dec_done_status=%x", ctx->id, dec_done_status);
  84
  85         return IRQ_HANDLED;
  86 }
  87
  88 static int mtk_vcodec_get_reg_bases(struct mtk_vcodec_dec_dev *dev)
  89 {
  90         struct platform_device *pdev = dev->plat_dev;
  91         int reg_num, i;
  92         struct resource *res;
  93         bool has_vdecsys_reg;
  94         int num_max_vdec_regs;
  95         static const char * const mtk_dec_reg_names[] = {
  96                 "misc",
  97                 "ld",
  98                 "top",
  99                 "cm",
 100                 "ad",
 101                 "av",
 102                 "pp",
 103                 "hwd",
 104                 "hwq",
 105                 "hwb",
 106                 "hwg"
 107         };
 108
 109         /*
 110          * If we have reg-names in devicetree, this means that we're on a new
 111          * register organization, which implies that the VDEC_SYS iospace gets
 112          * R/W through a syscon (regmap).
 113          * Here we try to get the "misc" iostart only to check if we have reg-names
 114          */
 115         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "misc");
 116         if (res)
 117                 has_vdecsys_reg = false;
 118         else
 119                 has_vdecsys_reg = true;
 120
 121         num_max_vdec_regs = has_vdecsys_reg ? NUM_MAX_VDEC_REG_BASE :
 122                                               ARRAY_SIZE(mtk_dec_reg_names);
 123
 124         /* Sizeof(u32) * 4 bytes for each register base. */
 125         reg_num = of_property_count_elems_of_size(pdev->dev.of_node, "reg",
 126                                                   sizeof(u32) * 4);
 127         if (reg_num <= 0 || reg_num > num_max_vdec_regs) {
 128                 dev_err(&pdev->dev, "Invalid register property size: %d\n", reg_num);
 129                 return -EINVAL;
 130         }
 131
 132         if (has_vdecsys_reg) {
 133                 for (i = 0; i < reg_num; i++) {
 134                         dev->reg_base[i] = devm_platform_ioremap_resource(pdev, i);
 135                         if (IS_ERR(dev->reg_base[i]))
 136                                 return PTR_ERR(dev->reg_base[i]);
 137
 138                         dev_dbg(&pdev->dev, "reg[%d] base=%p", i, dev->reg_base[i]);
 139                 }
 140         } else {
 141                 for (i = 0; i < reg_num; i++) {
 142                         dev->reg_base[i+1] = devm_platform_ioremap_resource_byname(pdev, mtk_dec_reg_names[i]);
 143                         if (IS_ERR(dev->reg_base[i+1]))
 144                                 return PTR_ERR(dev->reg_base[i+1]);
 145
 146                         dev_dbg(&pdev->dev, "reg[%d] base=%p", i + 1, dev->reg_base[i + 1]);
 147                 }
 148
 149                 dev->vdecsys_regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
 150                                                                       "mediatek,vdecsys");
 151                 if (IS_ERR(dev->vdecsys_regmap)) {
 152                         dev_err(&pdev->dev, "Missing mediatek,vdecsys property");
 153                         return PTR_ERR(dev->vdecsys_regmap);
 154                 }
 155         }
 156
 157         return 0;
 158 }
 159
 160 static int mtk_vcodec_init_dec_resources(struct mtk_vcodec_dec_dev *dev)
 161 {
 162         struct platform_device *pdev = dev->plat_dev;
 163         int ret;
 164
 165         ret = mtk_vcodec_get_reg_bases(dev);
 166         if (ret)
 167                 return ret;
 168
 169         if (dev->vdec_pdata->is_subdev_supported)
 170                 return 0;
 171
 172         dev->dec_irq = platform_get_irq(pdev, 0);
 173         if (dev->dec_irq < 0)
 174                 return dev->dec_irq;
 175
 176         irq_set_status_flags(dev->dec_irq, IRQ_NOAUTOEN);
 177         ret = devm_request_irq(&pdev->dev, dev->dec_irq,
 178                                mtk_vcodec_dec_irq_handler, 0, pdev->name, dev);
 179         if (ret) {
 180                 dev_err(&pdev->dev, "failed to install dev->dec_irq %d (%d)",
 181                         dev->dec_irq, ret);
 182                 return ret;
 183         }
 184
 185         ret = mtk_vcodec_init_dec_clk(pdev, &dev->pm);
 186         if (ret < 0) {
 187                 dev_err(&pdev->dev, "failed to get mt vcodec clock source");
 188                 return ret;
 189         }
 190
 191         pm_runtime_enable(&pdev->dev);
 192         return 0;
 193 }
 194
 195 static int fops_vcodec_open(struct file *file)
 196 {
 197         struct mtk_vcodec_dec_dev *dev = video_drvdata(file);
 198         struct mtk_vcodec_dec_ctx *ctx = NULL;
 199         int ret = 0, i, hw_count;
 200         struct vb2_queue *src_vq;
 201
 202         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 203         if (!ctx)
 204                 return -ENOMEM;
 205
 206         mutex_lock(&dev->dev_mutex);
 207         ctx->id = dev->id_counter++;
 208         v4l2_fh_init(&ctx->fh, video_devdata(file));
 209         file->private_data = &ctx->fh;
 210         v4l2_fh_add(&ctx->fh);
 211         INIT_LIST_HEAD(&ctx->list);
 212         ctx->dev = dev;
 213         if (ctx->dev->vdec_pdata->is_subdev_supported) {
 214                 hw_count = mtk_vcodec_get_hw_count(ctx, dev);
 215                 if (!hw_count || !dev->subdev_prob_done) {
 216                         ret = -EINVAL;
 217                         goto err_ctrls_setup;
 218                 }
 219
 220                 ret = dev->subdev_prob_done(dev);
 221                 if (ret)
 222                         goto err_ctrls_setup;
 223
 224                 for (i = 0; i < hw_count; i++)
 225                         init_waitqueue_head(&ctx->queue[i]);
 226         } else {
 227                 init_waitqueue_head(&ctx->queue[0]);
 228         }
 229         mutex_init(&ctx->lock);
 230
 231         ctx->type = MTK_INST_DECODER;
 232         ret = dev->vdec_pdata->ctrls_setup(ctx);
 233         if (ret) {
 234                 mtk_v4l2_vdec_err(ctx, "Failed to setup mt vcodec controls");
 235                 goto err_ctrls_setup;
 236         }
 237         ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev_dec, ctx,
 238                 &mtk_vcodec_dec_queue_init);
 239         if (IS_ERR((__force void *)ctx->m2m_ctx)) {
 240                 ret = PTR_ERR((__force void *)ctx->m2m_ctx);
 241                 mtk_v4l2_vdec_err(ctx, "Failed to v4l2_m2m_ctx_init() (%d)", ret);
 242                 goto err_m2m_ctx_init;
 243         }
 244         src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx,
 245                                 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
 246         ctx->empty_flush_buf.vb.vb2_buf.vb2_queue = src_vq;
 247         mtk_vcodec_dec_set_default_params(ctx);
 248
 249         if (v4l2_fh_is_singular(&ctx->fh)) {
 250                 /*
 251                  * Does nothing if firmware was already loaded.
 252                  */
 253                 ret = mtk_vcodec_fw_load_firmware(dev->fw_handler);
 254                 if (ret < 0) {
 255                         /*
 256                          * Return 0 if downloading firmware successfully,
 257                          * otherwise it is failed
 258                          */
 259                         mtk_v4l2_vdec_err(ctx, "failed to load firmware!");
 260                         goto err_load_fw;
 261                 }
 262
 263                 dev->dec_capability =
 264                         mtk_vcodec_fw_get_vdec_capa(dev->fw_handler);
 265
 266                 mtk_v4l2_vdec_dbg(0, ctx, "decoder capability %x", dev->dec_capability);
 267         }
 268
 269         ctx->dev->vdec_pdata->init_vdec_params(ctx);
 270
 271         list_add(&ctx->list, &dev->ctx_list);
 272         mtk_vcodec_dbgfs_create(ctx);
 273
 274         mutex_unlock(&dev->dev_mutex);
 275         mtk_v4l2_vdec_dbg(0, ctx, "%s decoder [%d]", dev_name(&dev->plat_dev->dev), ctx->id);
 276         return ret;
 277
 278         /* Deinit when failure occurred */
 279 err_load_fw:
 280         v4l2_m2m_ctx_release(ctx->m2m_ctx);
 281 err_m2m_ctx_init:
 282         v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
 283 err_ctrls_setup:
 284         v4l2_fh_del(&ctx->fh);
 285         v4l2_fh_exit(&ctx->fh);
 286         kfree(ctx);
 287         mutex_unlock(&dev->dev_mutex);
 288
 289         return ret;
 290 }
 291
 292 static int fops_vcodec_release(struct file *file)
 293 {
 294         struct mtk_vcodec_dec_dev *dev = video_drvdata(file);
 295         struct mtk_vcodec_dec_ctx *ctx = fh_to_dec_ctx(file->private_data);
 296
 297         mtk_v4l2_vdec_dbg(0, ctx, "[%d] decoder", ctx->id);
 298         mutex_lock(&dev->dev_mutex);
 299
 300         /*
 301          * Call v4l2_m2m_ctx_release before mtk_vcodec_dec_release. First, it
 302          * makes sure the worker thread is not running after vdec_if_deinit.
 303          * Second, the decoder will be flushed and all the buffers will be
 304          * returned in stop_streaming.
 305          */
 306         v4l2_m2m_ctx_release(ctx->m2m_ctx);
 307         mtk_vcodec_dec_release(ctx);
 308
 309         v4l2_fh_del(&ctx->fh);
 310         v4l2_fh_exit(&ctx->fh);
 311         v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
 312
 313         mtk_vcodec_dbgfs_remove(dev, ctx->id);
 314         list_del_init(&ctx->list);
 315         kfree(ctx);
 316         mutex_unlock(&dev->dev_mutex);
 317         return 0;
 318 }
 319
 320 static const struct v4l2_file_operations mtk_vcodec_fops = {
 321         .owner          = THIS_MODULE,
 322         .open           = fops_vcodec_open,
 323         .release        = fops_vcodec_release,
 324         .poll           = v4l2_m2m_fop_poll,
 325         .unlocked_ioctl = video_ioctl2,
 326         .mmap           = v4l2_m2m_fop_mmap,
 327 };
 328
 329 static int mtk_vcodec_probe(struct platform_device *pdev)
 330 {
 331         struct mtk_vcodec_dec_dev *dev;
 332         struct video_device *vfd_dec;
 333         phandle rproc_phandle;
 334         enum mtk_vcodec_fw_type fw_type;
 335         int i, ret;
 336
 337         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 338         if (!dev)
 339                 return -ENOMEM;
 340
 341         INIT_LIST_HEAD(&dev->ctx_list);
 342         dev->plat_dev = pdev;
 343
 344         dev->vdec_pdata = of_device_get_match_data(&pdev->dev);
 345         if (!of_property_read_u32(pdev->dev.of_node, "mediatek,vpu",
 346                                   &rproc_phandle)) {
 347                 fw_type = VPU;
 348         } else if (!of_property_read_u32(pdev->dev.of_node, "mediatek,scp",
 349                                          &rproc_phandle)) {
 350                 fw_type = SCP;
 351         } else {
 352                 dev_dbg(&pdev->dev, "Could not get vdec IPI device");
 353                 return -ENODEV;
 354         }
 355         dma_set_max_seg_size(&pdev->dev, UINT_MAX);
 356
 357         dev->fw_handler = mtk_vcodec_fw_select(dev, fw_type, DECODER);
 358         if (IS_ERR(dev->fw_handler))
 359                 return PTR_ERR(dev->fw_handler);
 360
 361         ret = mtk_vcodec_init_dec_resources(dev);
 362         if (ret) {
 363                 dev_err(&pdev->dev, "Failed to init dec resources");
 364                 goto err_dec_pm;
 365         }
 366
 367         if (IS_VDEC_LAT_ARCH(dev->vdec_pdata->hw_arch)) {
 368                 dev->core_workqueue =
 369                         alloc_ordered_workqueue("core-decoder",
 370                                                 WQ_MEM_RECLAIM | WQ_FREEZABLE);
 371                 if (!dev->core_workqueue) {
 372                         dev_dbg(&pdev->dev, "Failed to create core workqueue");
 373                         ret = -EINVAL;
 374                         goto err_res;
 375                 }
 376         }
 377
 378         for (i = 0; i < MTK_VDEC_HW_MAX; i++)
 379                 mutex_init(&dev->dec_mutex[i]);
 380         mutex_init(&dev->dev_mutex);
 381         spin_lock_init(&dev->irqlock);
 382
 383         snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), "%s",
 384                 "[/MTK_V4L2_VDEC]");
 385
 386         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 387         if (ret) {
 388                 dev_err(&pdev->dev, "v4l2_device_register err=%d", ret);
 389                 goto err_core_workq;
 390         }
 391
 392         vfd_dec = video_device_alloc();
 393         if (!vfd_dec) {
 394                 dev_err(&pdev->dev, "Failed to allocate video device");
 395                 ret = -ENOMEM;
 396                 goto err_dec_alloc;
 397         }
 398         vfd_dec->fops           = &mtk_vcodec_fops;
 399         vfd_dec->ioctl_ops      = &mtk_vdec_ioctl_ops;
 400         vfd_dec->release        = video_device_release;
 401         vfd_dec->lock           = &dev->dev_mutex;
 402         vfd_dec->v4l2_dev       = &dev->v4l2_dev;
 403         vfd_dec->vfl_dir        = VFL_DIR_M2M;
 404         vfd_dec->device_caps    = V4L2_CAP_VIDEO_M2M_MPLANE |
 405                         V4L2_CAP_STREAMING;
 406
 407         snprintf(vfd_dec->name, sizeof(vfd_dec->name), "%s",
 408                 MTK_VCODEC_DEC_NAME);
 409         video_set_drvdata(vfd_dec, dev);
 410         dev->vfd_dec = vfd_dec;
 411         platform_set_drvdata(pdev, dev);
 412
 413         dev->m2m_dev_dec = v4l2_m2m_init(&mtk_vdec_m2m_ops);
 414         if (IS_ERR((__force void *)dev->m2m_dev_dec)) {
 415                 dev_err(&pdev->dev, "Failed to init mem2mem dec device");
 416                 ret = PTR_ERR((__force void *)dev->m2m_dev_dec);
 417                 goto err_dec_alloc;
 418         }
 419
 420         dev->decode_workqueue =
 421                 alloc_ordered_workqueue(MTK_VCODEC_DEC_NAME,
 422                         WQ_MEM_RECLAIM | WQ_FREEZABLE);
 423         if (!dev->decode_workqueue) {
 424                 dev_err(&pdev->dev, "Failed to create decode workqueue");
 425                 ret = -EINVAL;
 426                 goto err_event_workq;
 427         }
 428
 429         if (dev->vdec_pdata->is_subdev_supported) {
 430                 ret = of_platform_populate(pdev->dev.of_node, NULL, NULL,
 431                                            &pdev->dev);
 432                 if (ret) {
 433                         dev_err(&pdev->dev, "Main device of_platform_populate failed.");
 434                         goto err_reg_cont;
 435                 }
 436         } else {
 437                 set_bit(MTK_VDEC_CORE, dev->subdev_bitmap);
 438         }
 439
 440         atomic_set(&dev->dec_active_cnt, 0);
 441         memset(dev->vdec_racing_info, 0, sizeof(dev->vdec_racing_info));
 442         mutex_init(&dev->dec_racing_info_mutex);
 443
 444         ret = video_register_device(vfd_dec, VFL_TYPE_VIDEO, -1);
 445         if (ret) {
 446                 dev_err(&pdev->dev, "Failed to register video device");
 447                 goto err_reg_cont;
 448         }
 449
 450         if (dev->vdec_pdata->uses_stateless_api) {
 451                 v4l2_disable_ioctl(vfd_dec, VIDIOC_DECODER_CMD);
 452                 v4l2_disable_ioctl(vfd_dec, VIDIOC_TRY_DECODER_CMD);
 453
 454                 dev->mdev_dec.dev = &pdev->dev;
 455                 strscpy(dev->mdev_dec.model, MTK_VCODEC_DEC_NAME,
 456                         sizeof(dev->mdev_dec.model));
 457
 458                 media_device_init(&dev->mdev_dec);
 459                 dev->mdev_dec.ops = &mtk_vcodec_media_ops;
 460                 dev->v4l2_dev.mdev = &dev->mdev_dec;
 461
 462                 ret = v4l2_m2m_register_media_controller(dev->m2m_dev_dec, dev->vfd_dec,
 463                                                          MEDIA_ENT_F_PROC_VIDEO_DECODER);
 464                 if (ret) {
 465                         dev_err(&pdev->dev, "Failed to register media controller");
 466                         goto err_dec_mem_init;
 467                 }
 468
 469                 ret = media_device_register(&dev->mdev_dec);
 470                 if (ret) {
 471                         dev_err(&pdev->dev, "Failed to register media device");
 472                         goto err_media_reg;
 473                 }
 474
 475                 dev_dbg(&pdev->dev, "media registered as /dev/media%d", vfd_dec->minor);
 476         }
 477
 478         mtk_vcodec_dbgfs_init(dev, false);
 479         dev_dbg(&pdev->dev, "decoder registered as /dev/video%d", vfd_dec->minor);
 480
 481         return 0;
 482
 483 err_media_reg:
 484         v4l2_m2m_unregister_media_controller(dev->m2m_dev_dec);
 485 err_dec_mem_init:
 486         video_unregister_device(vfd_dec);
 487 err_reg_cont:
 488         if (dev->vdec_pdata->uses_stateless_api)
 489                 media_device_cleanup(&dev->mdev_dec);
 490         destroy_workqueue(dev->decode_workqueue);
 491 err_event_workq:
 492         v4l2_m2m_release(dev->m2m_dev_dec);
 493 err_dec_alloc:
 494         v4l2_device_unregister(&dev->v4l2_dev);
 495 err_core_workq:
 496         if (IS_VDEC_LAT_ARCH(dev->vdec_pdata->hw_arch))
 497                 destroy_workqueue(dev->core_workqueue);
 498 err_res:
 499         if (!dev->vdec_pdata->is_subdev_supported)
 500                 pm_runtime_disable(dev->pm.dev);
 501 err_dec_pm:
 502         mtk_vcodec_fw_release(dev->fw_handler);
 503         return ret;
 504 }
 505
 506 static const struct of_device_id mtk_vcodec_match[] = {
 507         {
 508                 .compatible = "mediatek,mt8173-vcodec-dec",
 509                 .data = &mtk_vdec_8173_pdata,
 510         },
 511         {
 512                 .compatible = "mediatek,mt8183-vcodec-dec",
 513                 .data = &mtk_vdec_8183_pdata,
 514         },
 515         {
 516                 .compatible = "mediatek,mt8192-vcodec-dec",
 517                 .data = &mtk_lat_sig_core_pdata,
 518         },
 519         {
 520                 .compatible = "mediatek,mt8186-vcodec-dec",
 521                 .data = &mtk_vdec_single_core_pdata,
 522         },
 523         {
 524                 .compatible = "mediatek,mt8195-vcodec-dec",
 525                 .data = &mtk_lat_sig_core_pdata,
 526         },
 527         {
 528                 .compatible = "mediatek,mt8188-vcodec-dec",
 529                 .data = &mtk_lat_sig_core_pdata,
 530         },
 531         {},
 532 };
 533
 534 MODULE_DEVICE_TABLE(of, mtk_vcodec_match);
 535
 536 static void mtk_vcodec_dec_remove(struct platform_device *pdev)
 537 {
 538         struct mtk_vcodec_dec_dev *dev = platform_get_drvdata(pdev);
 539
 540         destroy_workqueue(dev->decode_workqueue);
 541
 542         if (media_devnode_is_registered(dev->mdev_dec.devnode)) {
 543                 media_device_unregister(&dev->mdev_dec);
 544                 v4l2_m2m_unregister_media_controller(dev->m2m_dev_dec);
 545                 media_device_cleanup(&dev->mdev_dec);
 546         }
 547
 548         if (dev->m2m_dev_dec)
 549                 v4l2_m2m_release(dev->m2m_dev_dec);
 550
 551         if (dev->vfd_dec)
 552                 video_unregister_device(dev->vfd_dec);
 553
 554         mtk_vcodec_dbgfs_deinit(&dev->dbgfs);
 555         v4l2_device_unregister(&dev->v4l2_dev);
 556         if (!dev->vdec_pdata->is_subdev_supported)
 557                 pm_runtime_disable(dev->pm.dev);
 558         mtk_vcodec_fw_release(dev->fw_handler);
 559 }
 560
 561 static struct platform_driver mtk_vcodec_dec_driver = {
 562         .probe  = mtk_vcodec_probe,
 563         .remove_new = mtk_vcodec_dec_remove,
 564         .driver = {
 565                 .name   = MTK_VCODEC_DEC_NAME,
 566                 .of_match_table = mtk_vcodec_match,
 567         },
 568 };
 569
 570 module_platform_driver(mtk_vcodec_dec_driver);
 571
 572 MODULE_LICENSE("GPL v2");
 573 MODULE_DESCRIPTION("Mediatek video codec V4L2 decoder driver");