drivers/media/platform/mtk-vcodec/vdec_vpu_if.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (c) 2016 MediaTek Inc.
   4  * Author: PC Chen <pc.chen@mediatek.com>
   5  */
   6
   7 #ifndef _VDEC_VPU_IF_H_
   8 #define _VDEC_VPU_IF_H_
   9
  10 #include "mtk_vcodec_fw.h"
  11
  12 struct mtk_vcodec_ctx;
  13
  14 /**
  15  * struct vdec_vpu_inst - VPU instance for video codec
  16  * @id          : ipi msg id for each decoder
  17  * @vsi         : driver structure allocated by VPU side and shared to AP side
  18  *                for control and info share
  19  * @failure     : VPU execution result status, 0: success, others: fail
  20  * @inst_addr   : VPU decoder instance address
  21  * @signaled    : 1 - Host has received ack message from VPU, 0 - not received
  22  * @ctx         : context for v4l2 layer integration
  23  * @dev         : platform device of VPU
  24  * @wq          : wait queue to wait VPU message ack
  25  * @handler     : ipi handler for each decoder
  26  */
  27 struct vdec_vpu_inst {
  28         int id;
  29         void *vsi;
  30         int32_t failure;
  31         uint32_t inst_addr;
  32         unsigned int signaled;
  33         struct mtk_vcodec_ctx *ctx;
  34         wait_queue_head_t wq;
  35         mtk_vcodec_ipi_handler handler;
  36 };
  37
  38 /**
  39  * vpu_dec_init - init decoder instance and allocate required resource in VPU.
  40  *
  41  * @vpu: instance for vdec_vpu_inst
  42  */
  43 int vpu_dec_init(struct vdec_vpu_inst *vpu);
  44
  45 /**
  46  * vpu_dec_start - start decoding, basically the function will be invoked once
  47  *                 every frame.
  48  *
  49  * @vpu : instance for vdec_vpu_inst
  50  * @data: meta data to pass bitstream info to VPU decoder
  51  * @len : meta data length
  52  */
  53 int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len);
  54
  55 /**
  56  * vpu_dec_end - end decoding, basically the function will be invoked once
  57  *               when HW decoding done interrupt received successfully. The
  58  *               decoder in VPU will continue to do reference frame management
  59  *               and check if there is a new decoded frame available to display.
  60  *
  61  * @vpu : instance for vdec_vpu_inst
  62  */
  63 int vpu_dec_end(struct vdec_vpu_inst *vpu);
  64
  65 /**
  66  * vpu_dec_deinit - deinit decoder instance and resource freed in VPU.
  67  *
  68  * @vpu: instance for vdec_vpu_inst
  69  */
  70 int vpu_dec_deinit(struct vdec_vpu_inst *vpu);
  71
  72 /**
  73  * vpu_dec_reset - reset decoder, use for flush decoder when end of stream or
  74  *                 seek. Remainig non displayed frame will be pushed to display.
  75  *
  76  * @vpu: instance for vdec_vpu_inst
  77  */
  78 int vpu_dec_reset(struct vdec_vpu_inst *vpu);
  79
  80 #endif