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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 */
126