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/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _VDEC_VPU_IF_H_
#define _VDEC_VPU_IF_H_
#include "mtk_vpu.h"
/**
* struct vdec_vpu_inst - VPU instance for video codec
* @ipi_id : ipi id for each decoder
* @vsi : driver structure allocated by VPU side and shared to AP side
* for control and info share
* @failure : VPU execution result status, 0: success, others: fail
* @inst_addr : VPU decoder instance address
* @signaled : 1 - Host has received ack message from VPU, 0 - not received
* @ctx : context for v4l2 layer integration
* @dev : platform device of VPU
* @wq : wait queue to wait VPU message ack
* @handler : ipi handler for each decoder
*/
struct vdec_vpu_inst {
enum ipi_id id;
void *vsi;
int32_t failure;
uint32_t inst_addr;
unsigned int signaled;
struct mtk_vcodec_ctx *ctx;
struct platform_device *dev;
wait_queue_head_t wq;
ipi_handler_t handler;
};
/**
* vpu_dec_init - init decoder instance and allocate required resource in VPU.
*
* @vpu: instance for vdec_vpu_inst
*/
int vpu_dec_init(struct vdec_vpu_inst *vpu);
/**
* vpu_dec_start - start decoding, basically the function will be invoked once
* every frame.
*
* @vpu : instance for vdec_vpu_inst
* @data: meta data to pass bitstream info to VPU decoder
* @len : meta data length
*/
int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len);
/**
* vpu_dec_end - end decoding, basically the function will be invoked once
* when HW decoding done interrupt received successfully. The
* decoder in VPU will continue to do reference frame management
* and check if there is a new decoded frame available to display.
*
* @vpu : instance for vdec_vpu_inst
*/
int vpu_dec_end(struct vdec_vpu_inst *vpu);
/**
* vpu_dec_deinit - deinit decoder instance and resource freed in VPU.
*
* @vpu: instance for vdec_vpu_inst
*/
int vpu_dec_deinit(struct vdec_vpu_inst *vpu);
/**
* vpu_dec_reset - reset decoder, use for flush decoder when end of stream or
* seek. Remainig non displayed frame will be pushed to display.
*
* @vpu: instance for vdec_vpu_inst
*/
int vpu_dec_reset(struct vdec_vpu_inst *vpu);
/**
* vpu_dec_ipi_handler - Handler for VPU ipi message.
*
* @data: ipi message
* @len : length of ipi message
* @priv: callback private data which is passed by decoder when register.
*/
void vpu_dec_ipi_handler(void *data, unsigned int len, void *priv);
#endif
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