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
  58 typedef 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 }
  65 vtx_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
  84 typedef 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 }
  95 vtx_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
 105 typedef 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 }
 123 vtx_pageinfo_t;
 124
 125 #endif /* _VTX_H */