tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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_vpu.h"
11
12/**
13 * struct vdec_vpu_inst - VPU instance for video codec
14 * @ipi_id : ipi id for each decoder
15 * @vsi : driver structure allocated by VPU side and shared to AP side
16 * for control and info share
17 * @failure : VPU execution result status, 0: success, others: fail
18 * @inst_addr : VPU decoder instance address
19 * @signaled : 1 - Host has received ack message from VPU, 0 - not received
20 * @ctx : context for v4l2 layer integration
21 * @dev : platform device of VPU
22 * @wq : wait queue to wait VPU message ack
23 * @handler : ipi handler for each decoder
24 */
25struct vdec_vpu_inst {
26 enum ipi_id id;
27 void *vsi;
28 int32_t failure;
29 uint32_t inst_addr;
30 unsigned int signaled;
31 struct mtk_vcodec_ctx *ctx;
32 struct platform_device *dev;
33 wait_queue_head_t wq;
34 ipi_handler_t handler;
35};
36
37/**
38 * vpu_dec_init - init decoder instance and allocate required resource in VPU.
39 *
40 * @vpu: instance for vdec_vpu_inst
41 */
42int vpu_dec_init(struct vdec_vpu_inst *vpu);
43
44/**
45 * vpu_dec_start - start decoding, basically the function will be invoked once
46 * every frame.
47 *
48 * @vpu : instance for vdec_vpu_inst
49 * @data: meta data to pass bitstream info to VPU decoder
50 * @len : meta data length
51 */
52int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len);
53
54/**
55 * vpu_dec_end - end decoding, basically the function will be invoked once
56 * when HW decoding done interrupt received successfully. The
57 * decoder in VPU will continue to do reference frame management
58 * and check if there is a new decoded frame available to display.
59 *
60 * @vpu : instance for vdec_vpu_inst
61 */
62int vpu_dec_end(struct vdec_vpu_inst *vpu);
63
64/**
65 * vpu_dec_deinit - deinit decoder instance and resource freed in VPU.
66 *
67 * @vpu: instance for vdec_vpu_inst
68 */
69int vpu_dec_deinit(struct vdec_vpu_inst *vpu);
70
71/**
72 * vpu_dec_reset - reset decoder, use for flush decoder when end of stream or
73 * seek. Remainig non displayed frame will be pushed to display.
74 *
75 * @vpu: instance for vdec_vpu_inst
76 */
77int vpu_dec_reset(struct vdec_vpu_inst *vpu);
78
79/**
80 * vpu_dec_ipi_handler - Handler for VPU ipi message.
81 *
82 * @data: ipi message
83 * @len : length of ipi message
84 * @priv: callback private data which is passed by decoder when register.
85 */
86void vpu_dec_ipi_handler(void *data, unsigned int len, void *priv);
87
88#endif