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         mutex_lock(&dev->dev_ctx_lock);
 272         list_add(&ctx->list, &dev->ctx_list);
 273         mutex_unlock(&dev->dev_ctx_lock);
 274         mtk_vcodec_dbgfs_create(ctx);
 275
 276         mutex_unlock(&dev->dev_mutex);
 277         mtk_v4l2_vdec_dbg(0, ctx, "%s decoder [%d]", dev_name(&dev->plat_dev->dev), ctx->id);
 278         return ret;
 279
 280         /* Deinit when failure occurred */
 281 err_load_fw:
 282         v4l2_m2m_ctx_release(ctx->m2m_ctx);
 283 err_m2m_ctx_init:
 284         v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
 285 err_ctrls_setup:
 286         v4l2_fh_del(&ctx->fh);
 287         v4l2_fh_exit(&ctx->fh);
 288         kfree(ctx);
 289         mutex_unlock(&dev->dev_mutex);
 290
 291         return ret;
 292 }
 293
 294 static int fops_vcodec_release(struct file *file)
 295 {
 296         struct mtk_vcodec_dec_dev *dev = video_drvdata(file);
 297         struct mtk_vcodec_dec_ctx *ctx = fh_to_dec_ctx(file->private_data);
 298
 299         mtk_v4l2_vdec_dbg(0, ctx, "[%d] decoder", ctx->id);
 300         mutex_lock(&dev->dev_mutex);
 301
 302         /*
 303          * Call v4l2_m2m_ctx_release before mtk_vcodec_dec_release. First, it
 304          * makes sure the worker thread is not running after vdec_if_deinit.
 305          * Second, the decoder will be flushed and all the buffers will be
 306          * returned in stop_streaming.
 307          */
 308         v4l2_m2m_ctx_release(ctx->m2m_ctx);
 309         mtk_vcodec_dec_release(ctx);
 310
 311         v4l2_fh_del(&ctx->fh);
 312         v4l2_fh_exit(&ctx->fh);
 313         v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
 314
 315         mtk_vcodec_dbgfs_remove(dev, ctx->id);
 316         mutex_lock(&dev->dev_ctx_lock);
 317         list_del_init(&ctx->list);
 318         mutex_unlock(&dev->dev_ctx_lock);
 319         kfree(ctx);
 320         mutex_unlock(&dev->dev_mutex);
 321         return 0;
 322 }
 323
 324 static const struct v4l2_file_operations mtk_vcodec_fops = {
 325         .owner          = THIS_MODULE,
 326         .open           = fops_vcodec_open,
 327         .release        = fops_vcodec_release,
 328         .poll           = v4l2_m2m_fop_poll,
 329         .unlocked_ioctl = video_ioctl2,
 330         .mmap           = v4l2_m2m_fop_mmap,
 331 };
 332
 333 static void mtk_vcodec_dec_get_chip_name(struct mtk_vcodec_dec_dev *vdec_dev)
 334 {
 335         struct device *dev = &vdec_dev->plat_dev->dev;
 336
 337         if (of_device_is_compatible(dev->of_node, "mediatek,mt8173-vcodec-dec"))
 338                 vdec_dev->chip_name = MTK_VDEC_MT8173;
 339         else if (of_device_is_compatible(dev->of_node, "mediatek,mt8183-vcodec-dec"))
 340                 vdec_dev->chip_name = MTK_VDEC_MT8183;
 341         else if (of_device_is_compatible(dev->of_node, "mediatek,mt8192-vcodec-dec"))
 342                 vdec_dev->chip_name = MTK_VDEC_MT8192;
 343         else if (of_device_is_compatible(dev->of_node, "mediatek,mt8195-vcodec-dec"))
 344                 vdec_dev->chip_name = MTK_VDEC_MT8195;
 345         else if (of_device_is_compatible(dev->of_node, "mediatek,mt8186-vcodec-dec"))
 346                 vdec_dev->chip_name = MTK_VDEC_MT8186;
 347         else if (of_device_is_compatible(dev->of_node, "mediatek,mt8188-vcodec-dec"))
 348                 vdec_dev->chip_name = MTK_VDEC_MT8188;
 349         else
 350                 vdec_dev->chip_name = MTK_VDEC_INVAL;
 351 }
 352
 353 static int mtk_vcodec_probe(struct platform_device *pdev)
 354 {
 355         struct mtk_vcodec_dec_dev *dev;
 356         struct video_device *vfd_dec;
 357         phandle rproc_phandle;
 358         enum mtk_vcodec_fw_type fw_type;
 359         int i, ret;
 360
 361         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 362         if (!dev)
 363                 return -ENOMEM;
 364
 365         INIT_LIST_HEAD(&dev->ctx_list);
 366         dev->plat_dev = pdev;
 367
 368         mtk_vcodec_dec_get_chip_name(dev);
 369         if (dev->chip_name == MTK_VDEC_INVAL) {
 370                 dev_err(&pdev->dev, "Failed to get decoder chip name");
 371                 return -EINVAL;
 372         }
 373
 374         dev->vdec_pdata = of_device_get_match_data(&pdev->dev);
 375         if (!of_property_read_u32(pdev->dev.of_node, "mediatek,vpu",
 376                                   &rproc_phandle)) {
 377                 fw_type = VPU;
 378         } else if (!of_property_read_u32(pdev->dev.of_node, "mediatek,scp",
 379                                          &rproc_phandle)) {
 380                 fw_type = SCP;
 381         } else {
 382                 dev_dbg(&pdev->dev, "Could not get vdec IPI device");
 383                 return -ENODEV;
 384         }
 385         dma_set_max_seg_size(&pdev->dev, UINT_MAX);
 386
 387         dev->fw_handler = mtk_vcodec_fw_select(dev, fw_type, DECODER);
 388         if (IS_ERR(dev->fw_handler))
 389                 return PTR_ERR(dev->fw_handler);
 390
 391         ret = mtk_vcodec_init_dec_resources(dev);
 392         if (ret) {
 393                 dev_err(&pdev->dev, "Failed to init dec resources");
 394                 goto err_dec_pm;
 395         }
 396
 397         if (IS_VDEC_LAT_ARCH(dev->vdec_pdata->hw_arch)) {
 398                 dev->core_workqueue =
 399                         alloc_ordered_workqueue("core-decoder",
 400                                                 WQ_MEM_RECLAIM | WQ_FREEZABLE);
 401                 if (!dev->core_workqueue) {
 402                         dev_dbg(&pdev->dev, "Failed to create core workqueue");
 403                         ret = -EINVAL;
 404                         goto err_res;
 405                 }
 406         }
 407
 408         for (i = 0; i < MTK_VDEC_HW_MAX; i++)
 409                 mutex_init(&dev->dec_mutex[i]);
 410         mutex_init(&dev->dev_mutex);
 411         mutex_init(&dev->dev_ctx_lock);
 412         spin_lock_init(&dev->irqlock);
 413
 414         snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), "%s",
 415                 "[/MTK_V4L2_VDEC]");
 416
 417         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
 418         if (ret) {
 419                 dev_err(&pdev->dev, "v4l2_device_register err=%d", ret);
 420                 goto err_core_workq;
 421         }
 422
 423         vfd_dec = video_device_alloc();
 424         if (!vfd_dec) {
 425                 dev_err(&pdev->dev, "Failed to allocate video device");
 426                 ret = -ENOMEM;
 427                 goto err_dec_alloc;
 428         }
 429         vfd_dec->fops           = &mtk_vcodec_fops;
 430         vfd_dec->ioctl_ops      = &mtk_vdec_ioctl_ops;
 431         vfd_dec->release        = video_device_release;
 432         vfd_dec->lock           = &dev->dev_mutex;
 433         vfd_dec->v4l2_dev       = &dev->v4l2_dev;
 434         vfd_dec->vfl_dir        = VFL_DIR_M2M;
 435         vfd_dec->device_caps    = V4L2_CAP_VIDEO_M2M_MPLANE |
 436                         V4L2_CAP_STREAMING;
 437
 438         snprintf(vfd_dec->name, sizeof(vfd_dec->name), "%s",
 439                 MTK_VCODEC_DEC_NAME);
 440         video_set_drvdata(vfd_dec, dev);
 441         dev->vfd_dec = vfd_dec;
 442         platform_set_drvdata(pdev, dev);
 443
 444         dev->m2m_dev_dec = v4l2_m2m_init(&mtk_vdec_m2m_ops);
 445         if (IS_ERR((__force void *)dev->m2m_dev_dec)) {
 446                 dev_err(&pdev->dev, "Failed to init mem2mem dec device");
 447                 ret = PTR_ERR((__force void *)dev->m2m_dev_dec);
 448                 goto err_dec_alloc;
 449         }
 450
 451         dev->decode_workqueue =
 452                 alloc_ordered_workqueue(MTK_VCODEC_DEC_NAME,
 453                         WQ_MEM_RECLAIM | WQ_FREEZABLE);
 454         if (!dev->decode_workqueue) {
 455                 dev_err(&pdev->dev, "Failed to create decode workqueue");
 456                 ret = -EINVAL;
 457                 goto err_event_workq;
 458         }
 459
 460         if (dev->vdec_pdata->is_subdev_supported) {
 461                 ret = of_platform_populate(pdev->dev.of_node, NULL, NULL,
 462                                            &pdev->dev);
 463                 if (ret) {
 464                         dev_err(&pdev->dev, "Main device of_platform_populate failed.");
 465                         goto err_reg_cont;
 466                 }
 467         } else {
 468                 set_bit(MTK_VDEC_CORE, dev->subdev_bitmap);
 469         }
 470
 471         atomic_set(&dev->dec_active_cnt, 0);
 472         memset(dev->vdec_racing_info, 0, sizeof(dev->vdec_racing_info));
 473         mutex_init(&dev->dec_racing_info_mutex);
 474
 475         ret = video_register_device(vfd_dec, VFL_TYPE_VIDEO, -1);
 476         if (ret) {
 477                 dev_err(&pdev->dev, "Failed to register video device");
 478                 goto err_reg_cont;
 479         }
 480
 481         if (dev->vdec_pdata->uses_stateless_api) {
 482                 v4l2_disable_ioctl(vfd_dec, VIDIOC_DECODER_CMD);
 483                 v4l2_disable_ioctl(vfd_dec, VIDIOC_TRY_DECODER_CMD);
 484
 485                 dev->mdev_dec.dev = &pdev->dev;
 486                 strscpy(dev->mdev_dec.model, MTK_VCODEC_DEC_NAME,
 487                         sizeof(dev->mdev_dec.model));
 488
 489                 media_device_init(&dev->mdev_dec);
 490                 dev->mdev_dec.ops = &mtk_vcodec_media_ops;
 491                 dev->v4l2_dev.mdev = &dev->mdev_dec;
 492
 493                 ret = v4l2_m2m_register_media_controller(dev->m2m_dev_dec, dev->vfd_dec,
 494                                                          MEDIA_ENT_F_PROC_VIDEO_DECODER);
 495                 if (ret) {
 496                         dev_err(&pdev->dev, "Failed to register media controller");
 497                         goto err_dec_mem_init;
 498                 }
 499
 500                 ret = media_device_register(&dev->mdev_dec);
 501                 if (ret) {
 502                         dev_err(&pdev->dev, "Failed to register media device");
 503                         goto err_media_reg;
 504                 }
 505
 506                 dev_dbg(&pdev->dev, "media registered as /dev/media%d", vfd_dec->minor);
 507         }
 508
 509         mtk_vcodec_dbgfs_init(dev, false);
 510         dev_dbg(&pdev->dev, "decoder registered as /dev/video%d", vfd_dec->minor);
 511
 512         return 0;
 513
 514 err_media_reg:
 515         v4l2_m2m_unregister_media_controller(dev->m2m_dev_dec);
 516 err_dec_mem_init:
 517         video_unregister_device(vfd_dec);
 518 err_reg_cont:
 519         if (dev->vdec_pdata->uses_stateless_api)
 520                 media_device_cleanup(&dev->mdev_dec);
 521         destroy_workqueue(dev->decode_workqueue);
 522 err_event_workq:
 523         v4l2_m2m_release(dev->m2m_dev_dec);
 524 err_dec_alloc:
 525         v4l2_device_unregister(&dev->v4l2_dev);
 526 err_core_workq:
 527         if (IS_VDEC_LAT_ARCH(dev->vdec_pdata->hw_arch))
 528                 destroy_workqueue(dev->core_workqueue);
 529 err_res:
 530         if (!dev->vdec_pdata->is_subdev_supported)
 531                 pm_runtime_disable(dev->pm.dev);
 532 err_dec_pm:
 533         mtk_vcodec_fw_release(dev->fw_handler);
 534         return ret;
 535 }
 536
 537 static const struct of_device_id mtk_vcodec_match[] = {
 538         {
 539                 .compatible = "mediatek,mt8173-vcodec-dec",
 540                 .data = &mtk_vdec_8173_pdata,
 541         },
 542         {
 543                 .compatible = "mediatek,mt8183-vcodec-dec",
 544                 .data = &mtk_vdec_8183_pdata,
 545         },
 546         {
 547                 .compatible = "mediatek,mt8192-vcodec-dec",
 548                 .data = &mtk_lat_sig_core_pdata,
 549         },
 550         {
 551                 .compatible = "mediatek,mt8186-vcodec-dec",
 552                 .data = &mtk_vdec_single_core_pdata,
 553         },
 554         {
 555                 .compatible = "mediatek,mt8195-vcodec-dec",
 556                 .data = &mtk_lat_sig_core_pdata,
 557         },
 558         {
 559                 .compatible = "mediatek,mt8188-vcodec-dec",
 560                 .data = &mtk_lat_sig_core_pdata,
 561         },
 562         {},
 563 };
 564
 565 MODULE_DEVICE_TABLE(of, mtk_vcodec_match);
 566
 567 static void mtk_vcodec_dec_remove(struct platform_device *pdev)
 568 {
 569         struct mtk_vcodec_dec_dev *dev = platform_get_drvdata(pdev);
 570
 571         destroy_workqueue(dev->decode_workqueue);
 572
 573         if (media_devnode_is_registered(dev->mdev_dec.devnode)) {
 574                 media_device_unregister(&dev->mdev_dec);
 575                 v4l2_m2m_unregister_media_controller(dev->m2m_dev_dec);
 576                 media_device_cleanup(&dev->mdev_dec);
 577         }
 578
 579         if (dev->m2m_dev_dec)
 580                 v4l2_m2m_release(dev->m2m_dev_dec);
 581
 582         if (dev->vfd_dec)
 583                 video_unregister_device(dev->vfd_dec);
 584
 585         mtk_vcodec_dbgfs_deinit(&dev->dbgfs);
 586         v4l2_device_unregister(&dev->v4l2_dev);
 587         if (!dev->vdec_pdata->is_subdev_supported)
 588                 pm_runtime_disable(dev->pm.dev);
 589         mtk_vcodec_fw_release(dev->fw_handler);
 590 }
 591
 592 static struct platform_driver mtk_vcodec_dec_driver = {
 593         .probe  = mtk_vcodec_probe,
 594         .remove = mtk_vcodec_dec_remove,
 595         .driver = {
 596                 .name   = MTK_VCODEC_DEC_NAME,
 597                 .of_match_table = mtk_vcodec_match,
 598         },
 599 };
 600
 601 module_platform_driver(mtk_vcodec_dec_driver);
 602
 603 MODULE_LICENSE("GPL v2");
 604 MODULE_DESCRIPTION("Mediatek video codec V4L2 decoder driver");