saa7134.h

该代码是天敏电视卡天敏大师4的核心芯片在linux下面的驱动

/*
 * v4l2 device driver for philips saa7134 based TV cards
 *
 * (c) 2001,02 Gerd Knorr <[e-mail]>
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/version.h>
#define SAA7134_VERSION_CODE KERNEL_VERSION(0,2,11)

#include <linux/pci.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <linux/kdev_t.h>
#include <linux/input.h>

#include <asm/io.h>

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,64)
#include "video-buf.h"
#include "tuner.h"
#include "audiochip.h"
#include "id.h"
#include "i2c-compat.h"
#include "ir-common.h"
#else
#include <media/video-buf.h>
#include <media/tuner.h>
#include <media/audiochip.h>
#include <media/id.h>
#include <media/ir-common.h>
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,23)
# define irqreturn_t void
# define IRQ_RETVAL(foobar)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,71)
# define strlcpy(dest,src,len) strncpy(dest,src,(len)-1)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
# define iminor(inode) minor(inode->i_rdev)
#endif

#ifndef TRUE
# define TRUE (1==1)
#endif
#ifndef FALSE
# define FALSE (1==0)
#endif
#define UNSET (-1U)

/* 2.4 / 2.5 driver compatibility stuff */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,18)
# define minor(x) MINOR(x)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
# define need_resched() (current->need_resched)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
# define BUG_ON(condition) do { if ((condition)!=0) BUG(); } while(0)
#endif

/* ----------------------------------------------------------- */
/* enums                                                       */

enum saa7134_tvaudio_mode {
	TVAUDIO_FM_MONO       = 1,
	TVAUDIO_FM_BG_STEREO  = 2,
	TVAUDIO_FM_SAT_STEREO = 3,
	TVAUDIO_FM_K_STEREO   = 4,
	TVAUDIO_NICAM_AM      = 5,
	TVAUDIO_NICAM_FM      = 6,
};

enum saa7134_audio_in {
	TV    = 1,
	LINE1 = 2,
	LINE2 = 3,
};

enum saa7134_video_out {
	CCIR656 = 1,
};

/* ----------------------------------------------------------- */
/* static data                                                 */

struct saa7134_tvnorm {
	char          *name;
	v4l2_std_id   id;

	/* video decoder */
	unsigned int  sync_control;
	unsigned int  luma_control;
	unsigned int  chroma_ctrl1;
	unsigned int  chroma_gain;
	unsigned int  chroma_ctrl2;
	unsigned int  vgate_misc;

	/* video scaler */
	unsigned int  h_start;
	unsigned int  h_stop;
	unsigned int  video_v_start;
	unsigned int  video_v_stop;
	unsigned int  vbi_v_start;
	unsigned int  vbi_v_stop;
	unsigned int  src_timing;
};

struct saa7134_tvaudio {
	char         *name;
	v4l2_std_id  std;
	enum         saa7134_tvaudio_mode mode;
	int          carr1;
	int          carr2;
};

struct saa7134_format {
	char           *name;
	unsigned int   fourcc;
	unsigned int   depth;
	unsigned int   pm;
	unsigned int   vshift;   /* vertical downsampling (for planar yuv) */
	unsigned int   hshift;   /* horizontal downsampling (for planar yuv) */
	unsigned int   bswap:1;
	unsigned int   wswap:1;
	unsigned int   yuv:1;
	unsigned int   planar:1;
	unsigned int   uvswap:1;
};

/* ----------------------------------------------------------- */
/* card configuration                                          */

#define SAA7134_BOARD_NOAUTO        UNSET
#define SAA7134_BOARD_UNKNOWN           0
#define SAA7134_BOARD_PROTEUS_PRO       1
#define SAA7134_BOARD_FLYVIDEO3000      2
#define SAA7134_BOARD_FLYVIDEO2000      3
#define SAA7134_BOARD_EMPRESS           4
#define SAA7134_BOARD_MONSTERTV         5
#define SAA7134_BOARD_MD9717            6
#define SAA7134_BOARD_TVSTATION_RDS     7
#define SAA7134_BOARD_CINERGY400	8
#define SAA7134_BOARD_MD5044		9
#define SAA7134_BOARD_KWORLD           10
#define SAA7134_BOARD_CINERGY600       11
#define SAA7134_BOARD_MD7134           12
#define SAA7134_BOARD_TYPHOON_90031    13
#define SAA7134_BOARD_ELSA             14
#define SAA7134_BOARD_ELSA_500TV       15
#define SAA7134_BOARD_ASUSTeK_TVFM7134 16
#define SAA7134_BOARD_VA1000POWER      17
#define SAA7134_BOARD_BMK_MPEX_NOTUNER 18
#define SAA7134_BOARD_VIDEOMATE_TV     19
#define SAA7134_BOARD_CRONOS_PLUS      20
#define SAA7134_BOARD_10MOONSTVMASTER  21
#define SAA7134_BOARD_MD2819           22
#define SAA7134_BOARD_BMK_MPEX_TUNER   23
#define SAA7134_BOARD_TVSTATION_DVR    24
#define SAA7134_BOARD_ASUSTEK_TVFM7133	25
#define SAA7134_BOARD_PINNACLE_PCTV_STEREO 26
#define SAA7134_BOARD_MANLI_MTV002     27
#define SAA7134_BOARD_MANLI_MTV001     28
#define SAA7134_BOARD_TG3000TV         29
#define SAA7134_BOARD_ECS_TVP3XP       30
#define SAA7134_BOARD_ECS_TVP3XP_4CB5  31
#define SAA7134_BOARD_AVACSSMARTTV     32
#define SAA7134_BOARD_AVERMEDIA_DVD_EZMAKER 33

#define SAA7134_INPUT_MAX 8

struct saa7134_input {
	char                    *name;
	unsigned int            vmux;
	enum saa7134_audio_in   amux;
	unsigned int            gpio;
	unsigned int            tv:1;
};

struct saa7134_board {
	char                    *name;
	unsigned int            audio_clock;

	/* input switching */
	unsigned int            gpiomask;
	struct saa7134_input    inputs[SAA7134_INPUT_MAX];
	struct saa7134_input    radio;
	struct saa7134_input    mute;
	
	/* peripheral I/O */
	unsigned int            i2s_rate;
	unsigned int            has_ts;
	enum saa7134_video_out  video_out;

	/* i2c chip info */
	unsigned int            tuner_type;
	unsigned int            need_tda9887:1;
};

#define card_has_radio(dev)   (NULL != saa7134_boards[dev->board].radio.name)
#define card_has_ts(dev)      (saa7134_boards[dev->board].has_ts)
#define card(dev)             (saa7134_boards[dev->board])
#define card_in(dev,n)        (saa7134_boards[dev->board].inputs[n])

/* ----------------------------------------------------------- */
/* device / file handle status                                 */

#define RESOURCE_OVERLAY       1
#define RESOURCE_VIDEO         2
#define RESOURCE_VBI           4

#define INTERLACE_AUTO         0
#define INTERLACE_ON           1
#define INTERLACE_OFF          2

#define BUFFER_TIMEOUT     (HZ/2)  /* 0.5 seconds */

struct saa7134_dev;
struct saa7134_dma;

/* saa7134 page table */
struct saa7134_pgtable {
	unsigned int               size;
	u32                        *cpu;
	dma_addr_t                 dma;
};

/* tvaudio thread status */
struct saa7134_thread {
	pid_t                      pid;
	struct completion          exit;
	wait_queue_head_t          wq;
	unsigned int               shutdown;
	unsigned int               scan1;
	unsigned int               scan2;
	unsigned int               mode;
};

/* buffer for one video/vbi/ts frame */
struct saa7134_buf {
	/* common v4l buffer stuff -- must be first */
	struct videobuf_buffer vb;

	/* saa7134 specific */
	struct saa7134_format   *fmt;
	unsigned int            top_seen;
	int (*activate)(struct saa7134_dev *dev,
			struct saa7134_buf *buf,
			struct saa7134_buf *next);

	/* page tables */
	struct saa7134_pgtable  *pt;
};

struct saa7134_dmaqueue {
	struct saa7134_dev         *dev;
	struct saa7134_buf         *curr;
	struct list_head           queue;
	struct timer_list          timeout;
	unsigned int               need_two;
};

/* video filehandle status */
struct saa7134_fh {
	struct saa7134_dev         *dev;
	unsigned int               radio;
	enum v4l2_buf_type         type;
	unsigned int               resources;
#ifdef VIDIOC_G_PRIORITY 
	enum v4l2_priority	   prio;
#endif

	/* video overlay */
	struct v4l2_window         win;
	struct v4l2_clip           clips[8];
	unsigned int               nclips;

	/* video capture */