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

   1 /*
   2  * Copyright (c) 2016 MediaTek Inc.
   3  * Author: PC Chen <pc.chen@mediatek.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #ifndef _VDEC_VPU_IF_H_
  16 #define _VDEC_VPU_IF_H_
  17
  18 #include "mtk_vpu.h"
  19
  20 /**
  21  * struct vdec_vpu_inst - VPU instance for video codec
  22  * @ipi_id      : ipi id for each decoder
  23  * @vsi         : driver structure allocated by VPU side and shared to AP side
  24  *                for control and info share
  25  * @failure     : VPU execution result status, 0: success, others: fail
  26  * @inst_addr   : VPU decoder instance address
  27  * @signaled    : 1 - Host has received ack message from VPU, 0 - not received
  28  * @ctx         : context for v4l2 layer integration
  29  * @dev         : platform device of VPU
  30  * @wq          : wait queue to wait VPU message ack
  31  * @handler     : ipi handler for each decoder
  32  */
  33 struct vdec_vpu_inst {
  34         enum ipi_id id;
  35         void *vsi;
  36         int32_t failure;
  37         uint32_t inst_addr;
  38         unsigned int signaled;
  39         struct mtk_vcodec_ctx *ctx;
  40         struct platform_device *dev;
  41         wait_queue_head_t wq;
  42         ipi_handler_t handler;
  43 };
  44
  45 /**
  46  * vpu_dec_init - init decoder instance and allocate required resource in VPU.
  47  *
  48  * @vpu: instance for vdec_vpu_inst
  49  */
  50 int vpu_dec_init(struct vdec_vpu_inst *vpu);
  51
  52 /**
  53  * vpu_dec_start - start decoding, basically the function will be invoked once
  54  *                 every frame.
  55  *
  56  * @vpu : instance for vdec_vpu_inst
  57  * @data: meta data to pass bitstream info to VPU decoder
  58  * @len : meta data length
  59  */
  60 int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len);
  61
  62 /**
  63  * vpu_dec_end - end decoding, basically the function will be invoked once
  64  *               when HW decoding done interrupt received successfully. The
  65  *               decoder in VPU will continute to do referene frame management
  66  *               and check if there is a new decoded frame available to display.
  67  *
  68  * @vpu : instance for vdec_vpu_inst
  69  */
  70 int vpu_dec_end(struct vdec_vpu_inst *vpu);
  71
  72 /**
  73  * vpu_dec_deinit - deinit decoder instance and resource freed in VPU.
  74  *
  75  * @vpu: instance for vdec_vpu_inst
  76  */
  77 int vpu_dec_deinit(struct vdec_vpu_inst *vpu);
  78
  79 /**
  80  * vpu_dec_reset - reset decoder, use for flush decoder when end of stream or
  81  *                 seek. Remainig non displayed frame will be pushed to display.
  82  *
  83  * @vpu: instance for vdec_vpu_inst
  84  */
  85 int vpu_dec_reset(struct vdec_vpu_inst *vpu);
  86
  87 /**
  88  * vpu_dec_ipi_handler - Handler for VPU ipi message.
  89  *
  90  * @data: ipi message
  91  * @len : length of ipi message
  92  * @priv: callback private data which is passed by decoder when register.
  93  */
  94 void vpu_dec_ipi_handler(void *data, unsigned int len, void *priv);
  95
  96 #endif