389 lines
10 KiB
C
389 lines
10 KiB
C
/*
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* Copyright (c) 2016 MediaTek Inc.
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* Author: PC Chen <pc.chen@mediatek.com>
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* Tiffany Lin <tiffany.lin@mediatek.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _MTK_VCODEC_DRV_H_
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#define _MTK_VCODEC_DRV_H_
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#include <linux/platform_device.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/videobuf2-core.h>
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#include "mtk_vcodec_util.h"
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#define MTK_VCODEC_DRV_NAME "mtk_vcodec_drv"
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#define MTK_VCODEC_DEC_NAME "mtk-vcodec-dec"
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#define MTK_VCODEC_ENC_NAME "mtk-vcodec-enc"
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#define MTK_PLATFORM_STR "platform:mt8173"
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#define MTK_VCODEC_MAX_PLANES 3
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#define MTK_V4L2_BENCHMARK 0
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#define WAIT_INTR_TIMEOUT_MS 1000
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/**
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* enum mtk_hw_reg_idx - MTK hw register base index
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*/
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enum mtk_hw_reg_idx {
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VDEC_SYS,
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VDEC_MISC,
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VDEC_LD,
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VDEC_TOP,
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VDEC_CM,
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VDEC_AD,
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VDEC_AV,
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VDEC_PP,
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VDEC_HWD,
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VDEC_HWQ,
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VDEC_HWB,
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VDEC_HWG,
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NUM_MAX_VDEC_REG_BASE,
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/* h264 encoder */
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VENC_SYS = NUM_MAX_VDEC_REG_BASE,
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/* vp8 encoder */
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VENC_LT_SYS,
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NUM_MAX_VCODEC_REG_BASE
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};
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/**
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* enum mtk_instance_type - The type of an MTK Vcodec instance.
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*/
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enum mtk_instance_type {
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MTK_INST_DECODER = 0,
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MTK_INST_ENCODER = 1,
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};
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/**
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* enum mtk_instance_state - The state of an MTK Vcodec instance.
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* @MTK_STATE_FREE - default state when instance is created
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* @MTK_STATE_INIT - vcodec instance is initialized
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* @MTK_STATE_HEADER - vdec had sps/pps header parsed or venc
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* had sps/pps header encoded
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* @MTK_STATE_FLUSH - vdec is flushing. Only used by decoder
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* @MTK_STATE_ABORT - vcodec should be aborted
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*/
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enum mtk_instance_state {
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MTK_STATE_FREE = 0,
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MTK_STATE_INIT = 1,
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MTK_STATE_HEADER = 2,
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MTK_STATE_FLUSH = 3,
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MTK_STATE_ABORT = 4,
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};
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/**
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* struct mtk_encode_param - General encoding parameters type
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*/
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enum mtk_encode_param {
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MTK_ENCODE_PARAM_NONE = 0,
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MTK_ENCODE_PARAM_BITRATE = (1 << 0),
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MTK_ENCODE_PARAM_FRAMERATE = (1 << 1),
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MTK_ENCODE_PARAM_INTRA_PERIOD = (1 << 2),
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MTK_ENCODE_PARAM_FORCE_INTRA = (1 << 3),
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MTK_ENCODE_PARAM_GOP_SIZE = (1 << 4),
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};
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enum mtk_fmt_type {
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MTK_FMT_DEC = 0,
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MTK_FMT_ENC = 1,
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MTK_FMT_FRAME = 2,
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};
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/**
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* struct mtk_video_fmt - Structure used to store information about pixelformats
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*/
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struct mtk_video_fmt {
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u32 fourcc;
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enum mtk_fmt_type type;
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u32 num_planes;
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};
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/**
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* struct mtk_codec_framesizes - Structure used to store information about
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* framesizes
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*/
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struct mtk_codec_framesizes {
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u32 fourcc;
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struct v4l2_frmsize_stepwise stepwise;
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};
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/**
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* struct mtk_q_type - Type of queue
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*/
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enum mtk_q_type {
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MTK_Q_DATA_SRC = 0,
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MTK_Q_DATA_DST = 1,
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};
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/**
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* struct mtk_q_data - Structure used to store information about queue
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*/
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struct mtk_q_data {
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unsigned int visible_width;
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unsigned int visible_height;
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unsigned int coded_width;
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unsigned int coded_height;
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enum v4l2_field field;
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unsigned int bytesperline[MTK_VCODEC_MAX_PLANES];
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unsigned int sizeimage[MTK_VCODEC_MAX_PLANES];
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struct mtk_video_fmt *fmt;
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};
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/**
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* struct mtk_enc_params - General encoding parameters
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* @bitrate: target bitrate in bits per second
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* @num_b_frame: number of b frames between p-frame
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* @rc_frame: frame based rate control
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* @rc_mb: macroblock based rate control
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* @seq_hdr_mode: H.264 sequence header is encoded separately or joined
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* with the first frame
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* @intra_period: I frame period
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* @gop_size: group of picture size, it's used as the intra frame period
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* @framerate_num: frame rate numerator. ex: framerate_num=30 and
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* framerate_denom=1 menas FPS is 30
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* @framerate_denom: frame rate denominator. ex: framerate_num=30 and
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* framerate_denom=1 menas FPS is 30
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* @h264_max_qp: Max value for H.264 quantization parameter
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* @h264_profile: V4L2 defined H.264 profile
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* @h264_level: V4L2 defined H.264 level
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* @force_intra: force/insert intra frame
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*/
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struct mtk_enc_params {
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unsigned int bitrate;
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unsigned int num_b_frame;
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unsigned int rc_frame;
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unsigned int rc_mb;
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unsigned int seq_hdr_mode;
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unsigned int intra_period;
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unsigned int gop_size;
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unsigned int framerate_num;
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unsigned int framerate_denom;
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unsigned int h264_max_qp;
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unsigned int h264_profile;
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unsigned int h264_level;
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unsigned int force_intra;
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};
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/**
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* struct mtk_vcodec_pm - Power management data structure
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*/
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struct mtk_vcodec_pm {
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struct clk *vdec_bus_clk_src;
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struct clk *vencpll;
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struct clk *vcodecpll;
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struct clk *univpll_d2;
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struct clk *clk_cci400_sel;
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struct clk *vdecpll;
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struct clk *vdec_sel;
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struct clk *vencpll_d2;
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struct clk *venc_sel;
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struct clk *univpll1_d2;
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struct clk *venc_lt_sel;
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struct device *larbvdec;
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struct device *larbvenc;
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struct device *larbvenclt;
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struct device *dev;
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struct mtk_vcodec_dev *mtkdev;
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};
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/**
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* struct vdec_pic_info - picture size information
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* @pic_w: picture width
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* @pic_h: picture height
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* @buf_w: picture buffer width (64 aligned up from pic_w)
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* @buf_h: picture buffer heiht (64 aligned up from pic_h)
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* @y_bs_sz: Y bitstream size
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* @c_bs_sz: CbCr bitstream size
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* @y_len_sz: additional size required to store decompress information for y
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* plane
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* @c_len_sz: additional size required to store decompress information for cbcr
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* plane
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* E.g. suppose picture size is 176x144,
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* buffer size will be aligned to 176x160.
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*/
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struct vdec_pic_info {
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unsigned int pic_w;
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unsigned int pic_h;
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unsigned int buf_w;
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unsigned int buf_h;
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unsigned int y_bs_sz;
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unsigned int c_bs_sz;
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unsigned int y_len_sz;
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unsigned int c_len_sz;
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};
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/**
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* struct mtk_vcodec_ctx - Context (instance) private data.
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*
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* @type: type of the instance - decoder or encoder
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* @dev: pointer to the mtk_vcodec_dev of the device
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* @list: link to ctx_list of mtk_vcodec_dev
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* @fh: struct v4l2_fh
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* @m2m_ctx: pointer to the v4l2_m2m_ctx of the context
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* @q_data: store information of input and output queue
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* of the context
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* @id: index of the context that this structure describes
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* @state: state of the context
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* @param_change: indicate encode parameter type
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* @enc_params: encoding parameters
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* @dec_if: hooked decoder driver interface
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* @enc_if: hoooked encoder driver interface
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* @drv_handle: driver handle for specific decode/encode instance
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*
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* @picinfo: store picture info after header parsing
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* @dpb_size: store dpb count after header parsing
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* @int_cond: variable used by the waitqueue
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* @int_type: type of the last interrupt
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* @queue: waitqueue that can be used to wait for this context to
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* finish
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* @irq_status: irq status
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*
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* @ctrl_hdl: handler for v4l2 framework
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* @decode_work: worker for the decoding
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* @encode_work: worker for the encoding
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* @last_decoded_picinfo: pic information get from latest decode
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* @empty_flush_buf: a fake size-0 capture buffer that indicates flush
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*
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* @colorspace: enum v4l2_colorspace; supplemental to pixelformat
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* @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
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* @quantization: enum v4l2_quantization, colorspace quantization
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* @xfer_func: enum v4l2_xfer_func, colorspace transfer function
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* @lock: protect variables accessed by V4L2 threads and worker thread such as
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* mtk_video_dec_buf.
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*/
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struct mtk_vcodec_ctx {
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enum mtk_instance_type type;
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struct mtk_vcodec_dev *dev;
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struct list_head list;
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struct v4l2_fh fh;
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struct v4l2_m2m_ctx *m2m_ctx;
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struct mtk_q_data q_data[2];
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int id;
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enum mtk_instance_state state;
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enum mtk_encode_param param_change;
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struct mtk_enc_params enc_params;
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const struct vdec_common_if *dec_if;
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const struct venc_common_if *enc_if;
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unsigned long drv_handle;
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struct vdec_pic_info picinfo;
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int dpb_size;
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int int_cond;
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int int_type;
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wait_queue_head_t queue;
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unsigned int irq_status;
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struct v4l2_ctrl_handler ctrl_hdl;
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struct work_struct decode_work;
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struct work_struct encode_work;
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struct vdec_pic_info last_decoded_picinfo;
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struct mtk_video_dec_buf *empty_flush_buf;
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enum v4l2_colorspace colorspace;
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enum v4l2_ycbcr_encoding ycbcr_enc;
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enum v4l2_quantization quantization;
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enum v4l2_xfer_func xfer_func;
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int decoded_frame_cnt;
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struct mutex lock;
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};
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/**
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* struct mtk_vcodec_dev - driver data
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* @v4l2_dev: V4L2 device to register video devices for.
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* @vfd_dec: Video device for decoder
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* @vfd_enc: Video device for encoder.
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*
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* @m2m_dev_dec: m2m device for decoder
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* @m2m_dev_enc: m2m device for encoder.
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* @plat_dev: platform device
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* @vpu_plat_dev: mtk vpu platform device
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* @ctx_list: list of struct mtk_vcodec_ctx
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* @irqlock: protect data access by irq handler and work thread
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* @curr_ctx: The context that is waiting for codec hardware
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*
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* @reg_base: Mapped address of MTK Vcodec registers.
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*
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* @id_counter: used to identify current opened instance
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*
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* @encode_workqueue: encode work queue
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*
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* @int_cond: used to identify interrupt condition happen
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* @int_type: used to identify what kind of interrupt condition happen
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* @dev_mutex: video_device lock
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* @queue: waitqueue for waiting for completion of device commands
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*
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* @dec_irq: decoder irq resource
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* @enc_irq: h264 encoder irq resource
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* @enc_lt_irq: vp8 encoder irq resource
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*
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* @dec_mutex: decoder hardware lock
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* @enc_mutex: encoder hardware lock.
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*
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* @pm: power management control
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* @dec_capability: used to identify decode capability, ex: 4k
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* @enc_capability: used to identify encode capability
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*/
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struct mtk_vcodec_dev {
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struct v4l2_device v4l2_dev;
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struct video_device *vfd_dec;
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struct video_device *vfd_enc;
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struct v4l2_m2m_dev *m2m_dev_dec;
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struct v4l2_m2m_dev *m2m_dev_enc;
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struct platform_device *plat_dev;
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struct platform_device *vpu_plat_dev;
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struct list_head ctx_list;
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spinlock_t irqlock;
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struct mtk_vcodec_ctx *curr_ctx;
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void __iomem *reg_base[NUM_MAX_VCODEC_REG_BASE];
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unsigned long id_counter;
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struct workqueue_struct *decode_workqueue;
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struct workqueue_struct *encode_workqueue;
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int int_cond;
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int int_type;
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struct mutex dev_mutex;
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wait_queue_head_t queue;
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int dec_irq;
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int enc_irq;
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int enc_lt_irq;
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struct mutex dec_mutex;
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struct mutex enc_mutex;
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struct mtk_vcodec_pm pm;
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unsigned int dec_capability;
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unsigned int enc_capability;
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};
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static inline struct mtk_vcodec_ctx *fh_to_ctx(struct v4l2_fh *fh)
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{
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return container_of(fh, struct mtk_vcodec_ctx, fh);
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}
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static inline struct mtk_vcodec_ctx *ctrl_to_ctx(struct v4l2_ctrl *ctrl)
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{
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return container_of(ctrl->handler, struct mtk_vcodec_ctx, ctrl_hdl);
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}
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#endif /* _MTK_VCODEC_DRV_H_ */
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