LXR linux/include/linux/videotext.h

   1#ifndef _VTX_H
   2#define _VTX_H
   3
   4/*
   5 * Teletext (=Videotext) hardware decoders using interface /dev/vtx
   6 * Do not confuse with drivers using /dev/vbi which decode videotext by software
   7 *
   8 * Videotext IOCTLs changed in order to use _IO() macros defined in <linux/ioctl.h>,
   9 * unused tuner IOCTLs cleaned up by
  10 * Michael Geng <linux@MichaelGeng.de>
  11 *
  12 * Copyright (c) 1994-97 Martin Buck  <martin-2.buck@student.uni-ulm.de>
  13 * Read COPYING for more information
  14 *
  15 */
  16
  17
  18/*
  19 *      Videotext ioctls
  20 */
  21#define VTXIOCGETINFO   _IOR  (0x81,  1, vtx_info_t)
  22#define VTXIOCCLRPAGE   _IOW  (0x81,  2, vtx_pagereq_t)
  23#define VTXIOCCLRFOUND  _IOW  (0x81,  3, vtx_pagereq_t)
  24#define VTXIOCPAGEREQ   _IOW  (0x81,  4, vtx_pagereq_t)
  25#define VTXIOCGETSTAT   _IOW  (0x81,  5, vtx_pagereq_t)
  26#define VTXIOCGETPAGE   _IOW  (0x81,  6, vtx_pagereq_t)
  27#define VTXIOCSTOPDAU   _IOW  (0x81,  7, vtx_pagereq_t)
  28#define VTXIOCPUTPAGE   _IO   (0x81,  8)
  29#define VTXIOCSETDISP   _IO   (0x81,  9)
  30#define VTXIOCPUTSTAT   _IO   (0x81, 10)
  31#define VTXIOCCLRCACHE  _IO   (0x81, 11)
  32#define VTXIOCSETVIRT   _IOW  (0x81, 12, long)
  33
  34/* for compatibility, will go away some day */
  35#define VTXIOCGETINFO_OLD  0x7101  /* get version of driver & capabilities of vtx-chipset */
  36#define VTXIOCCLRPAGE_OLD  0x7102  /* clear page-buffer */
  37#define VTXIOCCLRFOUND_OLD 0x7103  /* clear bits indicating that page was found */
  38#define VTXIOCPAGEREQ_OLD  0x7104  /* search for page */
  39#define VTXIOCGETSTAT_OLD  0x7105  /* get status of page-buffer */
  40#define VTXIOCGETPAGE_OLD  0x7106  /* get contents of page-buffer */
  41#define VTXIOCSTOPDAU_OLD  0x7107  /* stop data acquisition unit */
  42#define VTXIOCPUTPAGE_OLD  0x7108  /* display page on TV-screen */
  43#define VTXIOCSETDISP_OLD  0x7109  /* set TV-mode */
  44#define VTXIOCPUTSTAT_OLD  0x710a  /* set status of TV-output-buffer */
  45#define VTXIOCCLRCACHE_OLD 0x710b  /* clear cache on VTX-interface (if avail.) */
  46#define VTXIOCSETVIRT_OLD  0x710c  /* turn on virtual mode (this disables TV-display) */
  47
  48/*
  49 *      Definitions for VTXIOCGETINFO
  50 */
  51
  52#define SAA5243 0
  53#define SAA5246 1
  54#define SAA5249 2
  55#define SAA5248 3
  56#define XSTV5346 4
  57
  58typedef struct {
  59        int version_major, version_minor;       /* version of driver; if version_major changes, driver */
  60                                                /* is not backward compatible!!! CHECK THIS!!! */
  61        int numpages;                           /* number of page-buffers of vtx-chipset */
  62        int cct_type;                           /* type of vtx-chipset (SAA5243, SAA5246, SAA5248 or
  63                                                 * SAA5249) */
  64}
  65vtx_info_t;
  66
  67
  68/*
  69 *      Definitions for VTXIOC{CLRPAGE,CLRFOUND,PAGEREQ,GETSTAT,GETPAGE,STOPDAU,PUTPAGE,SETDISP}
  70 */
  71
  72#define MIN_UNIT   (1<<0)
  73#define MIN_TEN    (1<<1)
  74#define HR_UNIT    (1<<2)
  75#define HR_TEN     (1<<3)
  76#define PG_UNIT    (1<<4)
  77#define PG_TEN     (1<<5)
  78#define PG_HUND    (1<<6)
  79#define PGMASK_MAX (1<<7)
  80#define PGMASK_PAGE (PG_HUND | PG_TEN | PG_UNIT)
  81#define PGMASK_HOUR (HR_TEN | HR_UNIT)
  82#define PGMASK_MINUTE (MIN_TEN | MIN_UNIT)
  83
  84typedef struct
  85{
  86        int page;       /* number of requested page (hexadecimal) */
  87        int hour;       /* requested hour (hexadecimal) */
  88        int minute;     /* requested minute (hexadecimal) */
  89        int pagemask;   /* mask defining which values of the above are set */
  90        int pgbuf;      /* buffer where page will be stored */
  91        int start;      /* start of requested part of page */
  92        int end;        /* end of requested part of page */
  93        void __user *buffer;    /* pointer to beginning of destination buffer */
  94}
  95vtx_pagereq_t;
  96
  97
  98/*
  99 *      Definitions for VTXIOC{GETSTAT,PUTSTAT}
 100 */
 101
 102#define VTX_PAGESIZE (40 * 24)
 103#define VTX_VIRTUALSIZE (40 * 49)
 104
 105typedef struct
 106{
 107        int pagenum;                    /* number of page (hexadecimal) */
 108        int hour;                       /* hour (hexadecimal) */
 109        int minute;                     /* minute (hexadecimal) */
 110        int charset;                    /* national charset */
 111        unsigned delete : 1;            /* delete page (C4) */
 112        unsigned headline : 1;          /* insert headline (C5) */
 113        unsigned subtitle : 1;          /* insert subtitle (C6) */
 114        unsigned supp_header : 1;       /* suppress header (C7) */
 115        unsigned update : 1;            /* update page (C8) */
 116        unsigned inter_seq : 1;         /* interrupted sequence (C9) */
 117        unsigned dis_disp : 1;          /* disable/suppress display (C10) */
 118        unsigned serial : 1;            /* serial mode (C11) */
 119        unsigned notfound : 1;          /* /FOUND */
 120        unsigned pblf : 1;              /* PBLF */
 121        unsigned hamming : 1;           /* hamming-error occurred */
 122}
 123vtx_pageinfo_t;
 124
 125#endif /* _VTX_H */
 126