cregit-Linux how code gets into the kernel

Release 4.7 drivers/media/platform/coda/coda.h

Directory: drivers/media/platform/coda
/*
 * Coda multi-standard codec IP
 *
 * Copyright (C) 2012 Vista Silicon S.L.
 *    Javier Martin, <javier.martin@vista-silicon.com>
 *    Xavier Duret
 * Copyright (C) 2012-2014 Philipp Zabel, Pengutronix
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef __CODA_H__

#define __CODA_H__

#include <linux/debugfs.h>
#include <linux/irqreturn.h>
#include <linux/mutex.h>
#include <linux/kfifo.h>
#include <linux/videodev2.h>

#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fh.h>
#include <media/videobuf2-v4l2.h>

#include "coda_regs.h"


#define CODA_MAX_FRAMEBUFFERS	8

#define FMO_SLICE_SAVE_BUF_SIZE	(32)

enum {
	
V4L2_M2M_SRC = 0,
	
V4L2_M2M_DST = 1,
};


enum coda_inst_type {
	
CODA_INST_ENCODER,
	
CODA_INST_DECODER,
};


enum coda_product {
	
CODA_DX6 = 0xf001,
	
CODA_7541 = 0xf012,
	
CODA_960 = 0xf020,
};

struct coda_video_device;


struct coda_devtype {
	
char			*firmware[2];
	
enum coda_product	product;
	
const struct coda_codec	*codecs;
	
unsigned int		num_codecs;
	
const struct coda_video_device **vdevs;
	
unsigned int		num_vdevs;
	
size_t			workbuf_size;
	
size_t			tempbuf_size;
	
size_t			iram_size;
};


struct coda_aux_buf {
	
void			*vaddr;
	
dma_addr_t		paddr;
	
u32			size;
	
struct debugfs_blob_wrapper blob;
	
struct dentry		*dentry;
};


struct coda_dev {
	
struct v4l2_device	v4l2_dev;
	
struct video_device	vfd[5];
	
struct platform_device	*plat_dev;
	
const struct coda_devtype *devtype;
	
int			firmware;

	
void __iomem		*regs_base;
	
struct clk		*clk_per;
	
struct clk		*clk_ahb;
	
struct reset_control	*rstc;

	
struct coda_aux_buf	codebuf;
	
struct coda_aux_buf	tempbuf;
	
struct coda_aux_buf	workbuf;
	
struct gen_pool		*iram_pool;
	
struct coda_aux_buf	iram;

	
spinlock_t		irqlock;
	
struct mutex		dev_mutex;
	
struct mutex		coda_mutex;
	
struct workqueue_struct	*workqueue;
	
struct v4l2_m2m_dev	*m2m_dev;
	
struct vb2_alloc_ctx	*alloc_ctx;
	
struct list_head	instances;
	
unsigned long		instance_mask;
	
struct dentry		*debugfs_root;
};


struct coda_codec {
	
u32 mode;
	
u32 src_fourcc;
	
u32 dst_fourcc;
	
u32 max_w;
	
u32 max_h;
};

struct coda_huff_tab;


struct coda_params {
	
u8			rot_mode;
	
u8			h264_intra_qp;
	
u8			h264_inter_qp;
	
u8			h264_min_qp;
	
u8			h264_max_qp;
	
u8			h264_deblk_enabled;
	
u8			h264_deblk_alpha;
	
u8			h264_deblk_beta;
	
u8			mpeg4_intra_qp;
	
u8			mpeg4_inter_qp;
	
u8			gop_size;
	
int			intra_refresh;
	
u8			jpeg_quality;
	
u8			jpeg_restart_interval;
	
u8			*jpeg_qmat_tab[3];
	
int			codec_mode;
	
int			codec_mode_aux;
	
enum v4l2_mpeg_video_multi_slice_mode slice_mode;
	
u32			framerate;
	
u16			bitrate;
	
u16			vbv_delay;
	
u32			vbv_size;
	
u32			slice_max_bits;
	
u32			slice_max_mb;
};


struct coda_buffer_meta {
	
struct list_head	list;
	
u32			sequence;
	
struct v4l2_timecode	timecode;
	
u64			timestamp;
	
u32			start;
	
u32			end;
};

/* Per-queue, driver-specific private data */

struct coda_q_data {
	
unsigned int		width;
	
unsigned int		height;
	
unsigned int		bytesperline;
	
unsigned int		sizeimage;
	
unsigned int		fourcc;
	
struct v4l2_rect	rect;
};


struct coda_iram_info {
	
u32		axi_sram_use;
	
phys_addr_t	buf_bit_use;
	
phys_addr_t	buf_ip_ac_dc_use;
	
phys_addr_t	buf_dbk_y_use;
	
phys_addr_t	buf_dbk_c_use;
	
phys_addr_t	buf_ovl_use;
	
phys_addr_t	buf_btp_use;
	
phys_addr_t	search_ram_paddr;
	
int		search_ram_size;
	
int		remaining;
	
phys_addr_t	next_paddr;
};


#define GDI_LINEAR_FRAME_MAP 0

#define GDI_TILED_FRAME_MB_RASTER_MAP 1

struct coda_ctx;


struct coda_context_ops {
	
int (*queue_init)(void *priv, struct vb2_queue *src_vq,
			  struct vb2_queue *dst_vq);
	
int (*reqbufs)(struct coda_ctx *ctx, struct v4l2_requestbuffers *rb);
	
int (*start_streaming)(struct coda_ctx *ctx);
	
int (*prepare_run)(struct coda_ctx *ctx);
	
void (*finish_run)(struct coda_ctx *ctx);
	
void (*seq_end_work)(struct work_struct *work);
	
void (*release)(struct coda_ctx *ctx);
};


struct coda_ctx {
	
struct coda_dev			*dev;
	
struct mutex			buffer_mutex;
	
struct list_head		list;
	
struct work_struct		pic_run_work;
	
struct work_struct		seq_end_work;
	
struct completion		completion;
	
const struct coda_video_device	*cvd;
	
const struct coda_context_ops	*ops;
	
int				aborting;
	
int				initialized;
	
int				streamon_out;
	
int				streamon_cap;
	
u32				qsequence;
	
u32				osequence;
	
u32				sequence_offset;
	
struct coda_q_data		q_data[2];
	
enum coda_inst_type		inst_type;
	
const struct coda_codec		*codec;
	
enum v4l2_colorspace		colorspace;
	
struct coda_params		params;
	
struct v4l2_ctrl_handler	ctrls;
	
struct v4l2_fh			fh;
	
int				gopcounter;
	
int				runcounter;
	
char				vpu_header[3][64];
	
int				vpu_header_size[3];
	
struct kfifo			bitstream_fifo;
	
struct mutex			bitstream_mutex;
	
struct coda_aux_buf		bitstream;
	
bool				hold;
	
struct coda_aux_buf		parabuf;
	
struct coda_aux_buf		psbuf;
	
struct coda_aux_buf		slicebuf;
	
struct coda_aux_buf		internal_frames[CODA_MAX_FRAMEBUFFERS];
	
u32				frame_types[CODA_MAX_FRAMEBUFFERS];
	
struct coda_buffer_meta		frame_metas[CODA_MAX_FRAMEBUFFERS];
	
u32				frame_errors[CODA_MAX_FRAMEBUFFERS];
	
struct list_head		buffer_meta_list;
	
spinlock_t			buffer_meta_lock;
	
int				num_metas;
	
struct coda_aux_buf		workbuf;
	
int				num_internal_frames;
	
int				idx;
	
int				reg_idx;
	
struct coda_iram_info		iram_info;
	
int				tiled_map_type;
	
u32				bit_stream_param;
	
u32				frm_dis_flg;
	
u32				frame_mem_ctrl;
	
int				display_idx;
	
struct dentry			*debugfs_entry;
	
bool				use_bit;
};

extern int coda_debug;

void coda_write(struct coda_dev *dev, u32 data, u32 reg);
unsigned int coda_read(struct coda_dev *dev, u32 reg);
void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
		     struct vb2_v4l2_buffer *buf, unsigned int reg_y);

int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
		       size_t size, const char *name, struct dentry *parent);
void coda_free_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf);

int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
			    struct vb2_queue *dst_vq);
int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
			    struct vb2_queue *dst_vq);

int coda_hw_reset(struct coda_ctx *ctx);

void coda_fill_bitstream(struct coda_ctx *ctx, bool streaming);

void coda_set_gdi_regs(struct coda_ctx *ctx);




static inline struct coda_q_data *get_q_data(struct coda_ctx *ctx,
					     enum v4l2_buf_type type)
{
	switch (type) {
	case V4L2_BUF_TYPE_VIDEO_OUTPUT:
		return &(ctx->q_data[V4L2_M2M_SRC]);
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		return &(ctx->q_data[V4L2_M2M_DST]);
	default:
		return NULL;
	}
}


Contributors
PersonTokensPropCommitsCommitProp
philipp zabelphilipp zabel56100.00%1100.00%


Total56100.00%1100.00%



const char *coda_product_name(int product);

int coda_check_firmware(struct coda_dev *dev);




static inline unsigned int coda_get_bitstream_payload(struct coda_ctx *ctx)
{
	return kfifo_len(&ctx->bitstream_fifo);
}


Contributors
PersonTokensPropCommitsCommitProp
philipp zabelphilipp zabel22100.00%2100.00%


Total22100.00%2100.00%



void coda_bit_stream_end_flag(struct coda_ctx *ctx);

void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
		       enum vb2_buffer_state state);

int coda_h264_padding(int size, char *p);

bool coda_jpeg_check_buffer(struct coda_ctx *ctx, struct vb2_buffer *vb);
int coda_jpeg_write_tables(struct coda_ctx *ctx);
void coda_set_jpeg_compression_quality(struct coda_ctx *ctx, int quality);

extern const struct coda_context_ops coda_bit_encode_ops;
extern const struct coda_context_ops coda_bit_decode_ops;

irqreturn_t coda_irq_handler(int irq, void *data);

#endif /* __CODA_H__ */

Overall Contributors
PersonTokensPropCommitsCommitProp
philipp zabelphilipp zabel114899.65%2086.96%


junghak sungjunghak sung40.35%313.04%


Total1152100.00%23100.00%

  
Directory: drivers/media/platform/coda



Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
{% endraw %}