drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c

   1 /*
   2  * Copyright (c) 2016 MediaTek Inc.
   3  * Author: Jungchang Tsao <jungchang.tsao@mediatek.com>
   4  *         PC Chen <pc.chen@mediatek.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <linux/slab.h>
  17 #include "../vdec_drv_if.h"
  18 #include "../mtk_vcodec_util.h"
  19 #include "../mtk_vcodec_dec.h"
  20 #include "../mtk_vcodec_intr.h"
  21 #include "../vdec_vpu_if.h"
  22 #include "../vdec_drv_base.h"
  23
  24 /* Decoding picture buffer size (3 reference frames plus current frame) */
  25 #define VP8_DPB_SIZE                    4
  26
  27 /* HW working buffer size (bytes) */
  28 #define VP8_WORKING_BUF_SZ              (45 * 4096)
  29
  30 /* HW control register address */
  31 #define VP8_SEGID_DRAM_ADDR             0x3c
  32 #define VP8_HW_VLD_ADDR                 0x93C
  33 #define VP8_HW_VLD_VALUE                0x940
  34 #define VP8_BSASET                      0x100
  35 #define VP8_BSDSET                      0x104
  36 #define VP8_RW_CKEN_SET                 0x0
  37 #define VP8_RW_DCM_CON                  0x18
  38 #define VP8_WO_VLD_SRST                 0x108
  39 #define VP8_RW_MISC_SYS_SEL             0x84
  40 #define VP8_RW_MISC_SPEC_CON            0xC8
  41 #define VP8_WO_VLD_SRST                 0x108
  42 #define VP8_RW_VP8_CTRL                 0xA4
  43 #define VP8_RW_MISC_DCM_CON             0xEC
  44 #define VP8_RW_MISC_SRST                0xF4
  45 #define VP8_RW_MISC_FUNC_CON            0xCC
  46
  47 #define VP8_MAX_FRM_BUF_NUM             5
  48 #define VP8_MAX_FRM_BUF_NODE_NUM        (VP8_MAX_FRM_BUF_NUM * 2)
  49
  50 /* required buffer size (bytes) to store decode information */
  51 #define VP8_HW_SEGMENT_DATA_SZ          272
  52 #define VP8_HW_SEGMENT_UINT             4
  53
  54 #define VP8_DEC_TABLE_PROC_LOOP         96
  55 #define VP8_DEC_TABLE_UNIT              3
  56 #define VP8_DEC_TABLE_SZ                300
  57 #define VP8_DEC_TABLE_OFFSET            2
  58 #define VP8_DEC_TABLE_RW_UNIT           4
  59
  60 /**
  61  * struct vdec_vp8_dec_info - decode misc information
  62  * @working_buf_dma   : working buffer dma address
  63  * @prev_y_dma        : previous decoded frame buffer Y plane address
  64  * @cur_y_fb_dma      : current plane Y frame buffer dma address
  65  * @cur_c_fb_dma      : current plane C frame buffer dma address
  66  * @bs_dma            : bitstream dma address
  67  * @bs_sz             : bitstream size
  68  * @resolution_changed: resolution change flag 1 - changed,  0 - not change
  69  * @show_frame        : display this frame or not
  70  * @wait_key_frame    : wait key frame coming
  71  */
  72 struct vdec_vp8_dec_info {
  73         uint64_t working_buf_dma;
  74         uint64_t prev_y_dma;
  75         uint64_t cur_y_fb_dma;
  76         uint64_t cur_c_fb_dma;
  77         uint64_t bs_dma;
  78         uint32_t bs_sz;
  79         uint32_t resolution_changed;
  80         uint32_t show_frame;
  81         uint32_t wait_key_frame;
  82 };
  83
  84 /**
  85  * struct vdec_vp8_vsi - VPU shared information
  86  * @dec                 : decoding information
  87  * @pic                 : picture information
  88  * @dec_table           : decoder coefficient table
  89  * @segment_buf         : segmentation buffer
  90  * @load_data           : flag to indicate reload decode data
  91  */
  92 struct vdec_vp8_vsi {
  93         struct vdec_vp8_dec_info dec;
  94         struct vdec_pic_info pic;
  95         uint32_t dec_table[VP8_DEC_TABLE_SZ];
  96         uint32_t segment_buf[VP8_HW_SEGMENT_DATA_SZ][VP8_HW_SEGMENT_UINT];
  97         uint32_t load_data;
  98 };
  99
 100 /**
 101  * struct vdec_vp8_hw_reg_base - HW register base
 102  * @sys         : base address for sys
 103  * @misc        : base address for misc
 104  * @ld          : base address for ld
 105  * @top         : base address for top
 106  * @cm          : base address for cm
 107  * @hwd         : base address for hwd
 108  * @hwb         : base address for hwb
 109  */
 110 struct vdec_vp8_hw_reg_base {
 111         void __iomem *sys;
 112         void __iomem *misc;
 113         void __iomem *ld;
 114         void __iomem *top;
 115         void __iomem *cm;
 116         void __iomem *hwd;
 117         void __iomem *hwb;
 118 };
 119
 120 /**
 121  * struct vdec_vp8_vpu_inst - VPU instance for VP8 decode
 122  * @wq_hd       : Wait queue to wait VPU message ack
 123  * @signaled    : 1 - Host has received ack message from VPU, 0 - not recevie
 124  * @failure     : VPU execution result status 0 - success, others - fail
 125  * @inst_addr   : VPU decoder instance address
 126  */
 127 struct vdec_vp8_vpu_inst {
 128         wait_queue_head_t wq_hd;
 129         int signaled;
 130         int failure;
 131         uint32_t inst_addr;
 132 };
 133
 134 /* frame buffer (fb) list
 135  * [available_fb_node_list]  - decode fb are initialized to 0 and populated in
 136  * [fb_use_list]  - fb is set after decode and is moved to this list
 137  * [fb_free_list] - fb is not needed for reference will be moved from
 138  *                   [fb_use_list] to [fb_free_list] and
 139  *                   once user remove fb from [fb_free_list],
 140  *                   it is circulated back to [available_fb_node_list]
 141  * [fb_disp_list] - fb is set after decode and is moved to this list
 142  *                   once user remove fb from [fb_disp_list] it is
 143  *                   circulated back to [available_fb_node_list]
 144  */
 145
 146 /**
 147  * struct vdec_vp8_inst - VP8 decoder instance
 148  * @cur_fb                 : current frame buffer
 149  * @dec_fb                 : decode frame buffer node
 150  * @available_fb_node_list : list to store available frame buffer node
 151  * @fb_use_list            : list to store frame buffer in use
 152  * @fb_free_list           : list to store free frame buffer
 153  * @fb_disp_list           : list to store display ready frame buffer
 154  * @working_buf            : HW decoder working buffer
 155  * @reg_base               : HW register base address
 156  * @frm_cnt                : decode frame count
 157  * @ctx                    : V4L2 context
 158  * @dev                    : platform device
 159  * @vpu                    : VPU instance for decoder
 160  * @vsi                    : VPU share information
 161  */
 162 struct vdec_vp8_inst {
 163         struct vdec_fb *cur_fb;
 164         struct vdec_fb_node dec_fb[VP8_MAX_FRM_BUF_NODE_NUM];
 165         struct list_head available_fb_node_list;
 166         struct list_head fb_use_list;
 167         struct list_head fb_free_list;
 168         struct list_head fb_disp_list;
 169         struct mtk_vcodec_mem working_buf;
 170         struct vdec_vp8_hw_reg_base reg_base;
 171         unsigned int frm_cnt;
 172         struct mtk_vcodec_ctx *ctx;
 173         struct vdec_vpu_inst vpu;
 174         struct vdec_vp8_vsi *vsi;
 175 };
 176
 177 static void get_hw_reg_base(struct vdec_vp8_inst *inst)
 178 {
 179         inst->reg_base.top = mtk_vcodec_get_reg_addr(inst->ctx, VDEC_TOP);
 180         inst->reg_base.cm = mtk_vcodec_get_reg_addr(inst->ctx, VDEC_CM);
 181         inst->reg_base.hwd = mtk_vcodec_get_reg_addr(inst->ctx, VDEC_HWD);
 182         inst->reg_base.sys = mtk_vcodec_get_reg_addr(inst->ctx, VDEC_SYS);
 183         inst->reg_base.misc = mtk_vcodec_get_reg_addr(inst->ctx, VDEC_MISC);
 184         inst->reg_base.ld = mtk_vcodec_get_reg_addr(inst->ctx, VDEC_LD);
 185         inst->reg_base.hwb = mtk_vcodec_get_reg_addr(inst->ctx, VDEC_HWB);
 186 }
 187
 188 static void write_hw_segmentation_data(struct vdec_vp8_inst *inst)
 189 {
 190         int i, j;
 191         u32 seg_id_addr;
 192         u32 val;
 193         void __iomem *cm = inst->reg_base.cm;
 194         struct vdec_vp8_vsi *vsi = inst->vsi;
 195
 196         seg_id_addr = readl(inst->reg_base.top + VP8_SEGID_DRAM_ADDR) >> 4;
 197
 198         for (i = 0; i < ARRAY_SIZE(vsi->segment_buf); i++) {
 199                 for (j = ARRAY_SIZE(vsi->segment_buf[i]) - 1; j >= 0; j--) {
 200                         val = (1 << 16) + ((seg_id_addr + i) << 2) + j;
 201                         writel(val, cm + VP8_HW_VLD_ADDR);
 202
 203                         val = vsi->segment_buf[i][j];
 204                         writel(val, cm + VP8_HW_VLD_VALUE);
 205                 }
 206         }
 207 }
 208
 209 static void read_hw_segmentation_data(struct vdec_vp8_inst *inst)
 210 {
 211         int i, j;
 212         u32 seg_id_addr;
 213         u32 val;
 214         void __iomem *cm = inst->reg_base.cm;
 215         struct vdec_vp8_vsi *vsi = inst->vsi;
 216
 217         seg_id_addr = readl(inst->reg_base.top + VP8_SEGID_DRAM_ADDR) >> 4;
 218
 219         for (i = 0; i < ARRAY_SIZE(vsi->segment_buf); i++) {
 220                 for (j = ARRAY_SIZE(vsi->segment_buf[i]) - 1; j >= 0; j--) {
 221                         val = ((seg_id_addr + i) << 2) + j;
 222                         writel(val, cm + VP8_HW_VLD_ADDR);
 223
 224                         val = readl(cm + VP8_HW_VLD_VALUE);
 225                         vsi->segment_buf[i][j] = val;
 226                 }
 227         }
 228 }
 229
 230 /* reset HW and enable HW read/write data function */
 231 static void enable_hw_rw_function(struct vdec_vp8_inst *inst)
 232 {
 233         u32 val = 0;
 234         void __iomem *sys = inst->reg_base.sys;
 235         void __iomem *misc = inst->reg_base.misc;
 236         void __iomem *ld = inst->reg_base.ld;
 237         void __iomem *hwb = inst->reg_base.hwb;
 238         void __iomem *hwd = inst->reg_base.hwd;
 239
 240         writel(0x1, sys + VP8_RW_CKEN_SET);
 241         writel(0x101, ld + VP8_WO_VLD_SRST);
 242         writel(0x101, hwb + VP8_WO_VLD_SRST);
 243
 244         writel(1, sys);
 245         val = readl(misc + VP8_RW_MISC_SRST);
 246         writel((val & 0xFFFFFFFE), misc + VP8_RW_MISC_SRST);
 247
 248         writel(0x1, misc + VP8_RW_MISC_SYS_SEL);
 249         writel(0x17F, misc + VP8_RW_MISC_SPEC_CON);
 250         writel(0x71201100, misc + VP8_RW_MISC_FUNC_CON);
 251         writel(0x0, ld + VP8_WO_VLD_SRST);
 252         writel(0x0, hwb + VP8_WO_VLD_SRST);
 253         writel(0x1, sys + VP8_RW_DCM_CON);
 254         writel(0x1, misc + VP8_RW_MISC_DCM_CON);
 255         writel(0x1, hwd + VP8_RW_VP8_CTRL);
 256 }
 257
 258 static void store_dec_table(struct vdec_vp8_inst *inst)
 259 {
 260         int i, j;
 261         u32 addr = 0, val = 0;
 262         void __iomem *hwd = inst->reg_base.hwd;
 263         u32 *p = &inst->vsi->dec_table[VP8_DEC_TABLE_OFFSET];
 264
 265         for (i = 0; i < VP8_DEC_TABLE_PROC_LOOP; i++) {
 266                 writel(addr, hwd + VP8_BSASET);
 267                 for (j = 0; j < VP8_DEC_TABLE_UNIT ; j++) {
 268                         val = *p++;
 269                         writel(val, hwd + VP8_BSDSET);
 270                 }
 271                 addr += VP8_DEC_TABLE_RW_UNIT;
 272         }
 273 }
 274
 275 static void load_dec_table(struct vdec_vp8_inst *inst)
 276 {
 277         int i;
 278         u32 addr = 0;
 279         u32 *p = &inst->vsi->dec_table[VP8_DEC_TABLE_OFFSET];
 280         void __iomem *hwd = inst->reg_base.hwd;
 281
 282         for (i = 0; i < VP8_DEC_TABLE_PROC_LOOP; i++) {
 283                 writel(addr, hwd + VP8_BSASET);
 284                 /* read total 11 bytes */
 285                 *p++ = readl(hwd + VP8_BSDSET);
 286                 *p++ = readl(hwd + VP8_BSDSET);
 287                 *p++ = readl(hwd + VP8_BSDSET) & 0xFFFFFF;
 288                 addr += VP8_DEC_TABLE_RW_UNIT;
 289         }
 290 }
 291
 292 static void get_pic_info(struct vdec_vp8_inst *inst, struct vdec_pic_info *pic)
 293 {
 294         *pic = inst->vsi->pic;
 295
 296         mtk_vcodec_debug(inst, "pic(%d, %d), buf(%d, %d)",
 297                          pic->pic_w, pic->pic_h, pic->buf_w, pic->buf_h);
 298         mtk_vcodec_debug(inst, "Y(%d, %d), C(%d, %d)", pic->y_bs_sz,
 299                          pic->y_len_sz, pic->c_bs_sz, pic->c_len_sz);
 300 }
 301
 302 static void vp8_dec_finish(struct vdec_vp8_inst *inst)
 303 {
 304         struct vdec_fb_node *node;
 305         uint64_t prev_y_dma = inst->vsi->dec.prev_y_dma;
 306
 307         mtk_vcodec_debug(inst, "prev fb base dma=%llx", prev_y_dma);
 308
 309         /* put last decode ok frame to fb_free_list */
 310         if (prev_y_dma != 0) {
 311                 list_for_each_entry(node, &inst->fb_use_list, list) {
 312                         struct vdec_fb *fb = (struct vdec_fb *)node->fb;
 313
 314                         if (prev_y_dma == (uint64_t)fb->base_y.dma_addr) {
 315                                 list_move_tail(&node->list,
 316                                                &inst->fb_free_list);
 317                                 break;
 318                         }
 319                 }
 320         }
 321
 322         /* available_fb_node_list -> fb_use_list */
 323         node = list_first_entry(&inst->available_fb_node_list,
 324                                 struct vdec_fb_node, list);
 325         node->fb = inst->cur_fb;
 326         list_move_tail(&node->list, &inst->fb_use_list);
 327
 328         /* available_fb_node_list -> fb_disp_list */
 329         if (inst->vsi->dec.show_frame) {
 330                 node = list_first_entry(&inst->available_fb_node_list,
 331                                         struct vdec_fb_node, list);
 332                 node->fb = inst->cur_fb;
 333                 list_move_tail(&node->list, &inst->fb_disp_list);
 334         }
 335 }
 336
 337 static void move_fb_list_use_to_free(struct vdec_vp8_inst *inst)
 338 {
 339         struct vdec_fb_node *node, *tmp;
 340
 341         list_for_each_entry_safe(node, tmp, &inst->fb_use_list, list)
 342                 list_move_tail(&node->list, &inst->fb_free_list);
 343 }
 344
 345 static void init_list(struct vdec_vp8_inst *inst)
 346 {
 347         int i;
 348
 349         INIT_LIST_HEAD(&inst->available_fb_node_list);
 350         INIT_LIST_HEAD(&inst->fb_use_list);
 351         INIT_LIST_HEAD(&inst->fb_free_list);
 352         INIT_LIST_HEAD(&inst->fb_disp_list);
 353
 354         for (i = 0; i < ARRAY_SIZE(inst->dec_fb); i++) {
 355                 INIT_LIST_HEAD(&inst->dec_fb[i].list);
 356                 inst->dec_fb[i].fb = NULL;
 357                 list_add_tail(&inst->dec_fb[i].list,
 358                               &inst->available_fb_node_list);
 359         }
 360 }
 361
 362 static void add_fb_to_free_list(struct vdec_vp8_inst *inst, void *fb)
 363 {
 364         struct vdec_fb_node *node;
 365
 366         if (fb) {
 367                 node = list_first_entry(&inst->available_fb_node_list,
 368                                         struct vdec_fb_node, list);
 369                 node->fb = fb;
 370                 list_move_tail(&node->list, &inst->fb_free_list);
 371         }
 372 }
 373
 374 static int alloc_working_buf(struct vdec_vp8_inst *inst)
 375 {
 376         int err;
 377         struct mtk_vcodec_mem *mem = &inst->working_buf;
 378
 379         mem->size = VP8_WORKING_BUF_SZ;
 380         err = mtk_vcodec_mem_alloc(inst->ctx, mem);
 381         if (err) {
 382                 mtk_vcodec_err(inst, "Cannot allocate working buffer");
 383                 return err;
 384         }
 385
 386         inst->vsi->dec.working_buf_dma = (uint64_t)mem->dma_addr;
 387         return 0;
 388 }
 389
 390 static void free_working_buf(struct vdec_vp8_inst *inst)
 391 {
 392         struct mtk_vcodec_mem *mem = &inst->working_buf;
 393
 394         if (mem->va)
 395                 mtk_vcodec_mem_free(inst->ctx, mem);
 396
 397         inst->vsi->dec.working_buf_dma = 0;
 398 }
 399
 400 static int vdec_vp8_init(struct mtk_vcodec_ctx *ctx, unsigned long *h_vdec)
 401 {
 402         struct vdec_vp8_inst *inst;
 403         int err;
 404
 405         inst = kzalloc(sizeof(*inst), GFP_KERNEL);
 406         if (!inst)
 407                 return  -ENOMEM;
 408
 409         inst->ctx = ctx;
 410
 411         inst->vpu.id = IPI_VDEC_VP8;
 412         inst->vpu.dev = ctx->dev->vpu_plat_dev;
 413         inst->vpu.ctx = ctx;
 414         inst->vpu.handler = vpu_dec_ipi_handler;
 415
 416         err = vpu_dec_init(&inst->vpu);
 417         if (err) {
 418                 mtk_vcodec_err(inst, "vdec_vp8 init err=%d", err);
 419                 goto error_free_inst;
 420         }
 421
 422         inst->vsi = (struct vdec_vp8_vsi *)inst->vpu.vsi;
 423         init_list(inst);
 424         err = alloc_working_buf(inst);
 425         if (err)
 426                 goto error_deinit;
 427
 428         get_hw_reg_base(inst);
 429         mtk_vcodec_debug(inst, "VP8 Instance >> %p", inst);
 430
 431         *h_vdec = (unsigned long)inst;
 432         return 0;
 433
 434 error_deinit:
 435         vpu_dec_deinit(&inst->vpu);
 436 error_free_inst:
 437         kfree(inst);
 438         return err;
 439 }
 440
 441 static int vdec_vp8_decode(unsigned long h_vdec, struct mtk_vcodec_mem *bs,
 442                            struct vdec_fb *fb, bool *res_chg)
 443 {
 444         struct vdec_vp8_inst *inst = (struct vdec_vp8_inst *)h_vdec;
 445         struct vdec_vp8_dec_info *dec = &inst->vsi->dec;
 446         struct vdec_vpu_inst *vpu = &inst->vpu;
 447         unsigned char *bs_va;
 448         unsigned int data;
 449         int err = 0;
 450         uint64_t y_fb_dma;
 451         uint64_t c_fb_dma;
 452
 453         /* bs NULL means flush decoder */
 454         if (bs == NULL) {
 455                 move_fb_list_use_to_free(inst);
 456                 return vpu_dec_reset(vpu);
 457         }
 458
 459         y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0;
 460         c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0;
 461
 462         mtk_vcodec_debug(inst, "+ [%d] FB y_dma=%llx c_dma=%llx fb=%p",
 463                          inst->frm_cnt, y_fb_dma, c_fb_dma, fb);
 464
 465         inst->cur_fb = fb;
 466         dec->bs_dma = (unsigned long)bs->dma_addr;
 467         dec->bs_sz = bs->size;
 468         dec->cur_y_fb_dma = y_fb_dma;
 469         dec->cur_c_fb_dma = c_fb_dma;
 470
 471         mtk_vcodec_debug(inst, "\n + FRAME[%d] +\n", inst->frm_cnt);
 472
 473         write_hw_segmentation_data(inst);
 474         enable_hw_rw_function(inst);
 475         store_dec_table(inst);
 476
 477         bs_va = (unsigned char *)bs->va;
 478
 479         /* retrieve width/hight and scale info from header */
 480         data = (*(bs_va + 9) << 24) | (*(bs_va + 8) << 16) |
 481                (*(bs_va + 7) << 8) | *(bs_va + 6);
 482         err = vpu_dec_start(vpu, &data, 1);
 483         if (err) {
 484                 add_fb_to_free_list(inst, fb);
 485                 if (dec->wait_key_frame) {
 486                         mtk_vcodec_debug(inst, "wait key frame !");
 487                         return 0;
 488                 }
 489
 490                 goto error;
 491         }
 492
 493         if (dec->resolution_changed) {
 494                 mtk_vcodec_debug(inst, "- resolution_changed -");
 495                 *res_chg = true;
 496                 add_fb_to_free_list(inst, fb);
 497                 return 0;
 498         }
 499
 500         /* wait decoder done interrupt */
 501         mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
 502                                      WAIT_INTR_TIMEOUT_MS);
 503
 504         if (inst->vsi->load_data)
 505                 load_dec_table(inst);
 506
 507         vp8_dec_finish(inst);
 508         read_hw_segmentation_data(inst);
 509
 510         err = vpu_dec_end(vpu);
 511         if (err)
 512                 goto error;
 513
 514         mtk_vcodec_debug(inst, "\n - FRAME[%d] - show=%d\n", inst->frm_cnt,
 515                          dec->show_frame);
 516         inst->frm_cnt++;
 517         *res_chg = false;
 518         return 0;
 519
 520 error:
 521         mtk_vcodec_err(inst, "\n - FRAME[%d] - err=%d\n", inst->frm_cnt, err);
 522         return err;
 523 }
 524
 525 static void get_disp_fb(struct vdec_vp8_inst *inst, struct vdec_fb **out_fb)
 526 {
 527         struct vdec_fb_node *node;
 528         struct vdec_fb *fb;
 529
 530         node = list_first_entry_or_null(&inst->fb_disp_list,
 531                                         struct vdec_fb_node, list);
 532         if (node) {
 533                 list_move_tail(&node->list, &inst->available_fb_node_list);
 534                 fb = (struct vdec_fb *)node->fb;
 535                 fb->status |= FB_ST_DISPLAY;
 536                 mtk_vcodec_debug(inst, "[FB] get disp fb %p st=%d",
 537                                  node->fb, fb->status);
 538         } else {
 539                 fb = NULL;
 540                 mtk_vcodec_debug(inst, "[FB] there is no disp fb");
 541         }
 542
 543         *out_fb = fb;
 544 }
 545
 546 static void get_free_fb(struct vdec_vp8_inst *inst, struct vdec_fb **out_fb)
 547 {
 548         struct vdec_fb_node *node;
 549         struct vdec_fb *fb;
 550
 551         node = list_first_entry_or_null(&inst->fb_free_list,
 552                                         struct vdec_fb_node, list);
 553         if (node) {
 554                 list_move_tail(&node->list, &inst->available_fb_node_list);
 555                 fb = (struct vdec_fb *)node->fb;
 556                 fb->status |= FB_ST_FREE;
 557                 mtk_vcodec_debug(inst, "[FB] get free fb %p st=%d",
 558                                  node->fb, fb->status);
 559         } else {
 560                 fb = NULL;
 561                 mtk_vcodec_debug(inst, "[FB] there is no free fb");
 562         }
 563
 564         *out_fb = fb;
 565 }
 566
 567 static void get_crop_info(struct vdec_vp8_inst *inst, struct v4l2_rect *cr)
 568 {
 569         cr->left = 0;
 570         cr->top = 0;
 571         cr->width = inst->vsi->pic.pic_w;
 572         cr->height = inst->vsi->pic.pic_h;
 573         mtk_vcodec_debug(inst, "get crop info l=%d, t=%d, w=%d, h=%d",
 574                          cr->left, cr->top, cr->width, cr->height);
 575 }
 576
 577 static int vdec_vp8_get_param(unsigned long h_vdec,
 578                               enum vdec_get_param_type type, void *out)
 579 {
 580         struct vdec_vp8_inst *inst = (struct vdec_vp8_inst *)h_vdec;
 581
 582         switch (type) {
 583         case GET_PARAM_DISP_FRAME_BUFFER:
 584                 get_disp_fb(inst, out);
 585                 break;
 586
 587         case GET_PARAM_FREE_FRAME_BUFFER:
 588                 get_free_fb(inst, out);
 589                 break;
 590
 591         case GET_PARAM_PIC_INFO:
 592                 get_pic_info(inst, out);
 593                 break;
 594
 595         case GET_PARAM_CROP_INFO:
 596                 get_crop_info(inst, out);
 597                 break;
 598
 599         case GET_PARAM_DPB_SIZE:
 600                 *((unsigned int *)out) = VP8_DPB_SIZE;
 601                 break;
 602
 603         default:
 604                 mtk_vcodec_err(inst, "invalid get parameter type=%d", type);
 605                 return -EINVAL;
 606         }
 607
 608         return 0;
 609 }
 610
 611 static void vdec_vp8_deinit(unsigned long h_vdec)
 612 {
 613         struct vdec_vp8_inst *inst = (struct vdec_vp8_inst *)h_vdec;
 614
 615         mtk_vcodec_debug_enter(inst);
 616
 617         vpu_dec_deinit(&inst->vpu);
 618         free_working_buf(inst);
 619         kfree(inst);
 620 }
 621
 622 static struct vdec_common_if vdec_vp8_if = {
 623         vdec_vp8_init,
 624         vdec_vp8_decode,
 625         vdec_vp8_get_param,
 626         vdec_vp8_deinit,
 627 };
 628
 629 struct vdec_common_if *get_vp8_dec_comm_if(void);
 630
 631 struct vdec_common_if *get_vp8_dec_comm_if(void)
 632 {
 633         return &vdec_vp8_if;
 634 }