![Alexandre Courbot](/assets/img/avatar_default.png)
The interface used to communicate with the firmware casts pointers into unsigned longs and back again in order to store private references, all of this for pointers that remain purely in the kernel. Replace these unsigned longs with void pointers to make the code a bit sturdier and easier to follow. Also simplify some interfaces by removing arguments that could be infered from others. Signed-off-by: Alexandre Courbot <acourbot@chromium.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil-cisco@xs4all.nl: fix checkpatch alignment warning] Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
384 lines
10 KiB
C
384 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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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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#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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const 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 means FPS is 30
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* @framerate_denom: frame rate denominator. ex: framerate_num=30 and
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* framerate_denom=1 means 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_clk_info - Structure used to store clock name
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*/
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struct mtk_vcodec_clk_info {
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const char *clk_name;
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struct clk *vcodec_clk;
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};
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/**
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* struct mtk_vcodec_clk - Structure used to store vcodec clock information
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*/
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struct mtk_vcodec_clk {
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struct mtk_vcodec_clk_info *clk_info;
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int clk_num;
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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 mtk_vcodec_clk vdec_clk;
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struct device *larbvdec;
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struct mtk_vcodec_clk venc_clk;
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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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* @fb_sz: bitstream size of each 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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* @cap_fourcc: fourcc number(may changed when resolution change)
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* @reserved: align struct to 64-bit in order to adjust 32-bit and 64-bit os.
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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 fb_sz[VIDEO_MAX_PLANES];
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unsigned int cap_fourcc;
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unsigned int reserved;
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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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void *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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