316 lines
9.5 KiB
C
316 lines
9.5 KiB
C
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/*
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* Copyright (C) STMicroelectronics SA 2015
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* Authors: Yannick Fertre <yannick.fertre@st.com>
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* Hugues Fruchet <hugues.fruchet@st.com>
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* License terms: GNU General Public License (GPL), version 2
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*/
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#ifndef HVA_H
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#define HVA_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/videobuf2-v4l2.h>
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#include <media/v4l2-mem2mem.h>
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#define fh_to_ctx(f) (container_of(f, struct hva_ctx, fh))
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#define hva_to_dev(h) (h->dev)
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#define ctx_to_dev(c) (c->hva_dev->dev)
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#define ctx_to_hdev(c) (c->hva_dev)
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#define HVA_PREFIX "[---:----]"
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extern const struct hva_enc nv12h264enc;
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extern const struct hva_enc nv21h264enc;
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/**
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* struct hva_frameinfo - information about hva frame
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*
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* @pixelformat: fourcc code for uncompressed video format
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* @width: width of frame
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* @height: height of frame
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* @aligned_width: width of frame (with encoder alignment constraint)
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* @aligned_height: height of frame (with encoder alignment constraint)
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* @size: maximum size in bytes required for data
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*/
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struct hva_frameinfo {
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u32 pixelformat;
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u32 width;
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u32 height;
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u32 aligned_width;
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u32 aligned_height;
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u32 size;
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};
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/**
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* struct hva_streaminfo - information about hva stream
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*
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* @streamformat: fourcc code of compressed video format (H.264...)
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* @width: width of stream
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* @height: height of stream
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* @profile: profile string
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* @level: level string
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*/
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struct hva_streaminfo {
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u32 streamformat;
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u32 width;
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u32 height;
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u8 profile[32];
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u8 level[32];
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};
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/**
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* struct hva_controls - hva controls set
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*
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* @time_per_frame: time per frame in seconds
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* @bitrate_mode: bitrate mode (constant bitrate or variable bitrate)
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* @gop_size: groupe of picture size
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* @bitrate: bitrate (in bps)
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* @aspect: video aspect
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* @profile: H.264 profile
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* @level: H.264 level
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* @entropy_mode: H.264 entropy mode (CABAC or CVLC)
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* @cpb_size: coded picture buffer size (in kB)
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* @dct8x8: transform mode 8x8 enable
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* @qpmin: minimum quantizer
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* @qpmax: maximum quantizer
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* @vui_sar: pixel aspect ratio enable
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* @vui_sar_idc: pixel aspect ratio identifier
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* @sei_fp: sei frame packing arrangement enable
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* @sei_fp_type: sei frame packing arrangement type
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*/
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struct hva_controls {
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struct v4l2_fract time_per_frame;
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enum v4l2_mpeg_video_bitrate_mode bitrate_mode;
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u32 gop_size;
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u32 bitrate;
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enum v4l2_mpeg_video_aspect aspect;
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enum v4l2_mpeg_video_h264_profile profile;
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enum v4l2_mpeg_video_h264_level level;
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enum v4l2_mpeg_video_h264_entropy_mode entropy_mode;
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u32 cpb_size;
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bool dct8x8;
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u32 qpmin;
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u32 qpmax;
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bool vui_sar;
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enum v4l2_mpeg_video_h264_vui_sar_idc vui_sar_idc;
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bool sei_fp;
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enum v4l2_mpeg_video_h264_sei_fp_arrangement_type sei_fp_type;
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};
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/**
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* struct hva_frame - hva frame buffer (output)
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*
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* @vbuf: video buffer information for V4L2
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* @list: V4L2 m2m list that the frame belongs to
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* @info: frame information (width, height, format, alignment...)
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* @paddr: physical address (for hardware)
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* @vaddr: virtual address (kernel can read/write)
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* @prepared: true if vaddr/paddr are resolved
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*/
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struct hva_frame {
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struct vb2_v4l2_buffer vbuf;
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struct list_head list;
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struct hva_frameinfo info;
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dma_addr_t paddr;
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void *vaddr;
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bool prepared;
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};
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/*
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* to_hva_frame() - cast struct vb2_v4l2_buffer * to struct hva_frame *
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*/
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#define to_hva_frame(vb) \
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container_of(vb, struct hva_frame, vbuf)
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/**
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* struct hva_stream - hva stream buffer (capture)
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*
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* @v4l2: video buffer information for V4L2
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* @list: V4L2 m2m list that the frame belongs to
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* @paddr: physical address (for hardware)
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* @vaddr: virtual address (kernel can read/write)
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* @prepared: true if vaddr/paddr are resolved
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* @size: size of the buffer in bytes
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* @bytesused: number of bytes occupied by data in the buffer
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*/
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struct hva_stream {
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struct vb2_v4l2_buffer vbuf;
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struct list_head list;
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dma_addr_t paddr;
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void *vaddr;
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bool prepared;
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unsigned int size;
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unsigned int bytesused;
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};
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/*
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* to_hva_stream() - cast struct vb2_v4l2_buffer * to struct hva_stream *
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*/
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#define to_hva_stream(vb) \
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container_of(vb, struct hva_stream, vbuf)
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struct hva_dev;
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struct hva_enc;
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/**
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* struct hva_ctx - context of hva instance
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*
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* @hva_dev: the device that this instance is associated with
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* @fh: V4L2 file handle
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* @ctrl_handler: V4L2 controls handler
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* @ctrls: hva controls set
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* @id: instance identifier
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* @aborting: true if current job aborted
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* @name: instance name (debug purpose)
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* @run_work: encode work
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* @lock: mutex used to lock access of this context
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* @flags: validity of streaminfo and frameinfo fields
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* @frame_num: frame number
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* @stream_num: stream number
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* @max_stream_size: maximum size in bytes required for stream data
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* @colorspace: colorspace identifier
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* @xfer_func: transfer function identifier
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* @ycbcr_enc: Y'CbCr encoding identifier
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* @quantization: quantization identifier
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* @streaminfo: stream properties
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* @frameinfo: frame properties
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* @enc: current encoder
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* @priv: private codec data for this instance, allocated
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* by encoder @open time
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* @hw_err: true if hardware error detected
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*/
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struct hva_ctx {
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struct hva_dev *hva_dev;
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struct v4l2_fh fh;
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struct v4l2_ctrl_handler ctrl_handler;
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struct hva_controls ctrls;
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u8 id;
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bool aborting;
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char name[100];
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struct work_struct run_work;
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/* mutex protecting this data structure */
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struct mutex lock;
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u32 flags;
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u32 frame_num;
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u32 stream_num;
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u32 max_stream_size;
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enum v4l2_colorspace colorspace;
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enum v4l2_xfer_func xfer_func;
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enum v4l2_ycbcr_encoding ycbcr_enc;
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enum v4l2_quantization quantization;
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struct hva_streaminfo streaminfo;
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struct hva_frameinfo frameinfo;
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struct hva_enc *enc;
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void *priv;
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bool hw_err;
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};
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#define HVA_FLAG_STREAMINFO 0x0001
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#define HVA_FLAG_FRAMEINFO 0x0002
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#define HVA_MAX_INSTANCES 16
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#define HVA_MAX_ENCODERS 10
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#define HVA_MAX_FORMATS HVA_MAX_ENCODERS
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/**
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* struct hva_dev - abstraction for hva entity
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*
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* @v4l2_dev: V4L2 device
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* @vdev: video device
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* @pdev: platform device
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* @dev: device
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* @lock: mutex used for critical sections & V4L2 ops
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* serialization
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* @m2m_dev: memory-to-memory V4L2 device information
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* @instances: opened instances
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* @nb_of_instances: number of opened instances
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* @instance_id: rolling counter identifying an instance (debug purpose)
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* @regs: register io memory access
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* @esram_addr: esram address
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* @esram_size: esram size
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* @clk: hva clock
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* @irq_its: status interruption
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* @irq_err: error interruption
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* @work_queue: work queue to handle the encode jobs
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* @protect_mutex: mutex used to lock access of hardware
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* @interrupt: completion interrupt
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* @ip_version: IP hardware version
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* @encoders: registered encoders
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* @nb_of_encoders: number of registered encoders
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* @pixelformats: supported uncompressed video formats
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* @nb_of_pixelformats: number of supported umcompressed video formats
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* @streamformats: supported compressed video formats
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* @nb_of_streamformats: number of supported compressed video formats
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* @sfl_reg: status fifo level register value
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* @sts_reg: status register value
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* @lmi_err_reg: local memory interface error register value
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* @emi_err_reg: external memory interface error register value
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* @hec_mif_err_reg: HEC memory interface error register value
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*/
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struct hva_dev {
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struct v4l2_device v4l2_dev;
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struct video_device *vdev;
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struct platform_device *pdev;
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struct device *dev;
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/* mutex protecting vb2_queue structure */
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struct mutex lock;
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struct v4l2_m2m_dev *m2m_dev;
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struct hva_ctx *instances[HVA_MAX_INSTANCES];
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unsigned int nb_of_instances;
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unsigned int instance_id;
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void __iomem *regs;
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u32 esram_addr;
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u32 esram_size;
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struct clk *clk;
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int irq_its;
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int irq_err;
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struct workqueue_struct *work_queue;
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/* mutex protecting hardware access */
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struct mutex protect_mutex;
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struct completion interrupt;
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unsigned long int ip_version;
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const struct hva_enc *encoders[HVA_MAX_ENCODERS];
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u32 nb_of_encoders;
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u32 pixelformats[HVA_MAX_FORMATS];
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u32 nb_of_pixelformats;
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u32 streamformats[HVA_MAX_FORMATS];
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u32 nb_of_streamformats;
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u32 sfl_reg;
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u32 sts_reg;
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u32 lmi_err_reg;
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u32 emi_err_reg;
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u32 hec_mif_err_reg;
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};
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/**
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* struct hva_enc - hva encoder
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*
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* @name: encoder name
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* @streamformat: fourcc code for compressed video format (H.264...)
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* @pixelformat: fourcc code for uncompressed video format
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* @max_width: maximum width of frame for this encoder
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* @max_height: maximum height of frame for this encoder
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* @open: open encoder
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* @close: close encoder
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* @encode: encode a frame (struct hva_frame) in a stream
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* (struct hva_stream)
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*/
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struct hva_enc {
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const char *name;
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u32 streamformat;
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u32 pixelformat;
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u32 max_width;
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u32 max_height;
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int (*open)(struct hva_ctx *ctx);
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int (*close)(struct hva_ctx *ctx);
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int (*encode)(struct hva_ctx *ctx, struct hva_frame *frame,
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struct hva_stream *stream);
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};
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#endif /* HVA_H */
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