1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2016 MediaTek Inc. 4 * Author: PC Chen <pc.chen@mediatek.com> 5 * Tiffany Lin <tiffany.lin@mediatek.com> 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_new = 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"); 605