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    saa7146.h - definitions philips saa7146 based cards
    Copyright (C) 1999 Nathan Laredo (laredo@gnu.org)

    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
    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.

#ifndef __SAA7146__
#define __SAA7146__

#define SAA7146_VERSION_CODE 0x000101

#include <linux/types.h>
#include <linux/wait.h>

#include <linux/videodev.h>

#ifndef O_NONCAP

#define MAX_GBUFFERS    2
#define FBUF_SIZE 0x190000

#ifdef __KERNEL__

struct saa7146_window
      int x, y;
      ushort width, height;
      ushort bpp, bpl;
      ushort swidth, sheight;
      short cropx, cropy;
      ushort cropwidth, cropheight;
      unsigned long vidadr;
      int color_fmt;
      ushort depth;

/*  Per-open data for handling multiple opens on one device */
struct device_open
      int        isopen;
      int        noncapturing;
      struct saa7146  *dev;
#define MAX_OPENS 3

struct saa7146
      struct video_device video_dev;
      struct video_picture picture;
      struct video_audio audio_dev;
      struct video_info vidinfo;
      int user;
      int cap;
      int capuser;
      int irqstate;           /* irq routine is state driven */
      int writemode;
      int playmode;
      unsigned int nr;
      unsigned long irq;          /* IRQ used by SAA7146 card */
      unsigned short id;
      unsigned char revision;
      unsigned char boardcfg[64];   /* 64 bytes of config from eeprom */
      unsigned long saa7146_adr;   /* bus address of IO mem from PCI BIOS */
      struct saa7146_window win;
      unsigned char __iomem *saa7146_mem; /* pointer to mapped IO memory */
      struct device_open open_data[MAX_OPENS];
#define MAX_MARKS 16
      /* for a/v sync */
      int endmark[MAX_MARKS], endmarkhead, endmarktail;
      u32 *dmaRPS1, *pageRPS1, *dmaRPS2, *pageRPS2, *dmavid1, *dmavid2,
            *dmavid3, *dmaa1in, *dmaa1out, *dmaa2in, *dmaa2out,
            *pagedebi, *pagevid1, *pagevid2, *pagevid3, *pagea1in,
            *pagea1out, *pagea2in, *pagea2out;
      wait_queue_head_t i2cq, debiq, audq, vidq;
      u8  *vidbuf, *audbuf, *osdbuf, *dmadebi;
      int audhead, vidhead, osdhead, audtail, vidtail, osdtail;
      spinlock_t lock;  /* the device lock */

#ifdef _ALPHA_SAA7146
#define saawrite(dat,adr)    writel((dat), saa->saa7146_adr+(adr))
#define saaread(adr)         readl(saa->saa7146_adr+(adr))
#define saawrite(dat,adr)    writel((dat), saa->saa7146_mem+(adr))
#define saaread(adr)         readl(saa->saa7146_mem+(adr))

#define saaand(dat,adr)      saawrite((dat) & saaread(adr), adr)
#define saaor(dat,adr)       saawrite((dat) | saaread(adr), adr)
#define saaaor(dat,mask,adr) saawrite((dat) | ((mask) & saaread(adr)), adr)

/* bitmask of attached hardware found */
#define SAA7146_UNKNOWN       0x00000000
#define SAA7146_SAA7111       0x00000001
#define SAA7146_SAA7121       0x00000002
#define SAA7146_IBMMPEG       0x00000004


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