1/* $FreeBSD: head/sys/dev/bktr/bktr_tuner.c 67306 2000-10-19 07:33:28Z roger $ */
2
3/*
4 * This is part of the Driver for Video Capture Cards (Frame grabbers)
5 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
6 * chipset.
7 * Copyright Roger Hardiman and Amancio Hasty.
8 *
9 * bktr_tuner : This deals with controlling the tuner fitted to TV cards.
10 *
11 */
12
13/*
14 * 1. Redistributions of source code must retain the
15 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 * 3. All advertising materials mentioning features or use of this software
27 * must display the following acknowledgement:
28 * This product includes software developed by Amancio Hasty and
29 * Roger Hardiman
30 * 4. The name of the author may not be used to endorse or promote products
31 * derived from this software without specific prior written permission.
32 *
33 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
34 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
35 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
36 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
37 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
42 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
43 * POSSIBILITY OF SUCH DAMAGE.
44 */
45
46
47
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/kernel.h>
51#include <sys/vnode.h>
52#ifdef __NetBSD__
53#include <sys/proc.h>
54#endif
55
56#ifdef __FreeBSD__
57#include <pci/pcivar.h>
58
59#if (__FreeBSD_version < 500000)
60#include <machine/clock.h> /* for DELAY */
61#endif
62
63#if (__FreeBSD_version >=300000)
64#include <machine/bus_memio.h> /* for bus space */
65#include <machine/bus.h>
66#include <sys/bus.h>
67#endif
68#endif
69
70#ifdef __NetBSD__
71#include <dev/ic/bt8xx.h> /* NetBSD .h file location */
72#include <dev/pci/bktr/bktr_reg.h>
73#include <dev/pci/bktr/bktr_tuner.h>
74#include <dev/pci/bktr/bktr_card.h>
75#include <dev/pci/bktr/bktr_core.h>
76#else
77#include <machine/ioctl_meteor.h> /* Traditional .h file location */
78#include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
79#include <dev/bktr/bktr_reg.h>
80#include <dev/bktr/bktr_tuner.h>
81#include <dev/bktr/bktr_card.h>
82#include <dev/bktr/bktr_core.h>
83#endif
84
85
86
87#if defined( TUNER_AFC )
88#define AFC_DELAY 10000 /* 10 millisend delay */
89#define AFC_BITS 0x07
90#define AFC_FREQ_MINUS_125 0x00
91#define AFC_FREQ_MINUS_62 0x01
92#define AFC_FREQ_CENTERED 0x02
93#define AFC_FREQ_PLUS_62 0x03
94#define AFC_FREQ_PLUS_125 0x04
95#define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */
96#endif /* TUNER_AFC */
97
98
99#define TTYPE_XXX 0
100#define TTYPE_NTSC 1
101#define TTYPE_NTSC_J 2
102#define TTYPE_PAL 3
103#define TTYPE_PAL_M 4
104#define TTYPE_PAL_N 5
105#define TTYPE_SECAM 6
106
107#define TSA552x_CB_MSB (0x80)
108#define TSA552x_CB_CP (1<<6) /* set this for fast tuning */
109#define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */
110#define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */
111#define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */
112#define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */
113#define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/
114#define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */
115
116#define TSA552x_RADIO (TSA552x_CB_MSB | \
117 TSA552x_CB_T0)
118
119/* raise the charge pump voltage for fast tuning */
120#define TSA552x_FCONTROL (TSA552x_CB_MSB | \
121 TSA552x_CB_CP | \
122 TSA552x_CB_T0 | \
123 TSA552x_CB_RSA | \
124 TSA552x_CB_RSB)
125
126/* lower the charge pump voltage for better residual oscillator FM */
127#define TSA552x_SCONTROL (TSA552x_CB_MSB | \
128 TSA552x_CB_T0 | \
129 TSA552x_CB_RSA | \
130 TSA552x_CB_RSB)
131
132/* The control value for the ALPS TSCH5 Tuner */
133#define TSCH5_FCONTROL 0x82
134#define TSCH5_RADIO 0x86
135
136/* The control value for the ALPS TSBH1 Tuner */
137#define TSBH1_FCONTROL 0xce
138
139
140static const struct TUNER tuners[] = {
141/* XXX FIXME: fill in the band-switch crosspoints */
142 /* NO_TUNER */
143 { "<no>", /* the 'name' */
144 TTYPE_XXX, /* input type */
145 { 0x00, /* control byte for Tuner PLL */
146 0x00,
147 0x00,
148 0x00 },
149 { 0x00, 0x00 }, /* band-switch crosspoints */
150 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
151
152 /* TEMIC_NTSC */
153 { "Temic NTSC", /* the 'name' */
154 TTYPE_NTSC, /* input type */
155 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
156 TSA552x_SCONTROL,
157 TSA552x_SCONTROL,
158 0x00 },
159 { 0x00, 0x00}, /* band-switch crosspoints */
160 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
161
162 /* TEMIC_PAL */
163 { "Temic PAL", /* the 'name' */
164 TTYPE_PAL, /* input type */
165 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
166 TSA552x_SCONTROL,
167 TSA552x_SCONTROL,
168 0x00 },
169 { 0x00, 0x00 }, /* band-switch crosspoints */
170 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
171
172 /* TEMIC_SECAM */
173 { "Temic SECAM", /* the 'name' */
174 TTYPE_SECAM, /* input type */
175 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
176 TSA552x_SCONTROL,
177 TSA552x_SCONTROL,
178 0x00 },
179 { 0x00, 0x00 }, /* band-switch crosspoints */
180 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
181
182 /* PHILIPS_NTSC */
183 { "Philips NTSC", /* the 'name' */
184 TTYPE_NTSC, /* input type */
185 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
186 TSA552x_SCONTROL,
187 TSA552x_SCONTROL,
188 0x00 },
189 { 0x00, 0x00 }, /* band-switch crosspoints */
190 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
191
192 /* PHILIPS_PAL */
193 { "Philips PAL", /* the 'name' */
194 TTYPE_PAL, /* input type */
195 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
196 TSA552x_SCONTROL,
197 TSA552x_SCONTROL,
198 0x00 },
199 { 0x00, 0x00 }, /* band-switch crosspoints */
200 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
201
202 /* PHILIPS_SECAM */
203 { "Philips SECAM", /* the 'name' */
204 TTYPE_SECAM, /* input type */
205 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
206 TSA552x_SCONTROL,
207 TSA552x_SCONTROL,
208 0x00 },
209 { 0x00, 0x00 }, /* band-switch crosspoints */
210 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */
211
212 /* TEMIC_PAL I */
213 { "Temic PAL I", /* the 'name' */
214 TTYPE_PAL, /* input type */
215 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
216 TSA552x_SCONTROL,
217 TSA552x_SCONTROL,
218 0x00 },
219 { 0x00, 0x00 }, /* band-switch crosspoints */
220 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
221
222 /* PHILIPS_PALI */
223 { "Philips PAL I", /* the 'name' */
224 TTYPE_PAL, /* input type */
225 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
226 TSA552x_SCONTROL,
227 TSA552x_SCONTROL,
228 0x00 },
229 { 0x00, 0x00 }, /* band-switch crosspoints */
230 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
231
232 /* PHILIPS_FR1236_NTSC */
233 { "Philips FR1236 NTSC FM", /* the 'name' */
234 TTYPE_NTSC, /* input type */
235 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
236 TSA552x_FCONTROL,
237 TSA552x_FCONTROL,
238 TSA552x_RADIO },
239 { 0x00, 0x00 }, /* band-switch crosspoints */
240 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
241
242 /* PHILIPS_FR1216_PAL */
243 { "Philips FR1216 PAL FM" , /* the 'name' */
244 TTYPE_PAL, /* input type */
245 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
246 TSA552x_FCONTROL,
247 TSA552x_FCONTROL,
248 TSA552x_RADIO },
249 { 0x00, 0x00 }, /* band-switch crosspoints */
250 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
251
252 /* PHILIPS_FR1236_SECAM */
253 { "Philips FR1236 SECAM FM", /* the 'name' */
254 TTYPE_SECAM, /* input type */
255 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
256 TSA552x_FCONTROL,
257 TSA552x_FCONTROL,
258 TSA552x_RADIO },
259 { 0x00, 0x00 }, /* band-switch crosspoints */
260 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */
261
262 /* ALPS TSCH5 NTSC */
263 { "ALPS TSCH5 NTSC FM", /* the 'name' */
264 TTYPE_NTSC, /* input type */
265 { TSCH5_FCONTROL, /* control byte for Tuner PLL */
266 TSCH5_FCONTROL,
267 TSCH5_FCONTROL,
268 TSCH5_RADIO },
269 { 0x00, 0x00 }, /* band-switch crosspoints */
270 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */
271
272 /* ALPS TSBH1 NTSC */
273 { "ALPS TSBH1 NTSC", /* the 'name' */
274 TTYPE_NTSC, /* input type */
275 { TSBH1_FCONTROL, /* control byte for Tuner PLL */
276 TSBH1_FCONTROL,
277 TSBH1_FCONTROL,
278 0x00 },
279 { 0x00, 0x00 }, /* band-switch crosspoints */
280 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */
281};
282
283
284/* scaling factor for frequencies expressed as ints */
285#define FREQFACTOR 16
286
287/*
288 * Format:
289 * entry 0: MAX legal channel
290 * entry 1: IF frequency
291 * expressed as fi{mHz} * 16,
292 * eg 45.75mHz == 45.75 * 16 = 732
293 * entry 2: [place holder/future]
294 * entry 3: base of channel record 0
295 * entry 3 + (x*3): base of channel record 'x'
296 * entry LAST: NULL channel entry marking end of records
297 *
298 * Record:
299 * int 0: base channel
300 * int 1: frequency of base channel,
301 * expressed as fb{mHz} * 16,
302 * int 2: offset frequency between channels,
303 * expressed as fo{mHz} * 16,
304 */
305
306/*
307 * North American Broadcast Channels:
308 *
309 * 2: 55.25 mHz - 4: 67.25 mHz
310 * 5: 77.25 mHz - 6: 83.25 mHz
311 * 7: 175.25 mHz - 13: 211.25 mHz
312 * 14: 471.25 mHz - 83: 885.25 mHz
313 *
314 * IF freq: 45.75 mHz
315 */
316#define OFFSET 6.00
317static int nabcst[] = {
318 83, (int)( 45.75 * FREQFACTOR), 0,
319 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
320 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
321 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
322 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
323 0
324};
325#undef OFFSET
326
327/*
328 * North American Cable Channels, IRC:
329 *
330 * 2: 55.25 mHz - 4: 67.25 mHz
331 * 5: 77.25 mHz - 6: 83.25 mHz
332 * 7: 175.25 mHz - 13: 211.25 mHz
333 * 14: 121.25 mHz - 22: 169.25 mHz
334 * 23: 217.25 mHz - 94: 643.25 mHz
335 * 95: 91.25 mHz - 99: 115.25 mHz
336 *
337 * IF freq: 45.75 mHz
338 */
339#define OFFSET 6.00
340static int irccable[] = {
341 116, (int)( 45.75 * FREQFACTOR), 0,
342 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
343 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
344 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
345 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
346 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
347 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
348 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
349 0
350};
351#undef OFFSET
352
353/*
354 * North American Cable Channels, HRC:
355 *
356 * 2: 54 mHz - 4: 66 mHz
357 * 5: 78 mHz - 6: 84 mHz
358 * 7: 174 mHz - 13: 210 mHz
359 * 14: 120 mHz - 22: 168 mHz
360 * 23: 216 mHz - 94: 642 mHz
361 * 95: 90 mHz - 99: 114 mHz
362 *
363 * IF freq: 45.75 mHz
364 */
365#define OFFSET 6.00
366static int hrccable[] = {
367 116, (int)( 45.75 * FREQFACTOR), 0,
368 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
369 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
370 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
371 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
372 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
373 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
374 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
375 0
376};
377#undef OFFSET
378
379/*
380 * Western European broadcast channels:
381 *
382 * (there are others that appear to vary between countries - rmt)
383 *
384 * here's the table Philips provides:
385 * caution, some of the offsets don't compute...
386 *
387 * 1 4525 700 N21
388 *
389 * 2 4825 700 E2
390 * 3 5525 700 E3
391 * 4 6225 700 E4
392 *
393 * 5 17525 700 E5
394 * 6 18225 700 E6
395 * 7 18925 700 E7
396 * 8 19625 700 E8
397 * 9 20325 700 E9
398 * 10 21025 700 E10
399 * 11 21725 700 E11
400 * 12 22425 700 E12
401 *
402 * 13 5375 700 ITA
403 * 14 6225 700 ITB
404 *
405 * 15 8225 700 ITC
406 *
407 * 16 17525 700 ITD
408 * 17 18325 700 ITE
409 *
410 * 18 19225 700 ITF
411 * 19 20125 700 ITG
412 * 20 21025 700 ITH
413 *
414 * 21 47125 800 E21
415 * 22 47925 800 E22
416 * 23 48725 800 E23
417 * 24 49525 800 E24
418 * 25 50325 800 E25
419 * 26 51125 800 E26
420 * 27 51925 800 E27
421 * 28 52725 800 E28
422 * 29 53525 800 E29
423 * 30 54325 800 E30
424 * 31 55125 800 E31
425 * 32 55925 800 E32
426 * 33 56725 800 E33
427 * 34 57525 800 E34
428 * 35 58325 800 E35
429 * 36 59125 800 E36
430 * 37 59925 800 E37
431 * 38 60725 800 E38
432 * 39 61525 800 E39
433 * 40 62325 800 E40
434 * 41 63125 800 E41
435 * 42 63925 800 E42
436 * 43 64725 800 E43
437 * 44 65525 800 E44
438 * 45 66325 800 E45
439 * 46 67125 800 E46
440 * 47 67925 800 E47
441 * 48 68725 800 E48
442 * 49 69525 800 E49
443 * 50 70325 800 E50
444 * 51 71125 800 E51
445 * 52 71925 800 E52
446 * 53 72725 800 E53
447 * 54 73525 800 E54
448 * 55 74325 800 E55
449 * 56 75125 800 E56
450 * 57 75925 800 E57
451 * 58 76725 800 E58
452 * 59 77525 800 E59
453 * 60 78325 800 E60
454 * 61 79125 800 E61
455 * 62 79925 800 E62
456 * 63 80725 800 E63
457 * 64 81525 800 E64
458 * 65 82325 800 E65
459 * 66 83125 800 E66
460 * 67 83925 800 E67
461 * 68 84725 800 E68
462 * 69 85525 800 E69
463 *
464 * 70 4575 800 IA
465 * 71 5375 800 IB
466 * 72 6175 800 IC
467 *
468 * 74 6925 700 S01
469 * 75 7625 700 S02
470 * 76 8325 700 S03
471 *
472 * 80 10525 700 S1
473 * 81 11225 700 S2
474 * 82 11925 700 S3
475 * 83 12625 700 S4
476 * 84 13325 700 S5
477 * 85 14025 700 S6
478 * 86 14725 700 S7
479 * 87 15425 700 S8
480 * 88 16125 700 S9
481 * 89 16825 700 S10
482 * 90 23125 700 S11
483 * 91 23825 700 S12
484 * 92 24525 700 S13
485 * 93 25225 700 S14
486 * 94 25925 700 S15
487 * 95 26625 700 S16
488 * 96 27325 700 S17
489 * 97 28025 700 S18
490 * 98 28725 700 S19
491 * 99 29425 700 S20
492 *
493 *
494 * Channels S21 - S41 are taken from
495 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html
496 *
497 * 100 30325 800 S21
498 * 101 31125 800 S22
499 * 102 31925 800 S23
500 * 103 32725 800 S24
501 * 104 33525 800 S25
502 * 105 34325 800 S26
503 * 106 35125 800 S27
504 * 107 35925 800 S28
505 * 108 36725 800 S29
506 * 109 37525 800 S30
507 * 110 38325 800 S31
508 * 111 39125 800 S32
509 * 112 39925 800 S33
510 * 113 40725 800 S34
511 * 114 41525 800 S35
512 * 115 42325 800 S36
513 * 116 43125 800 S37
514 * 117 43925 800 S38
515 * 118 44725 800 S39
516 * 119 45525 800 S40
517 * 120 46325 800 S41
518 *
519 * 121 3890 000 IFFREQ
520 *
521 */
522static int weurope[] = {
523 121, (int)( 38.90 * FREQFACTOR), 0,
524 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
525 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
526 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
527 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
528 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
529 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
530 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
531 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
532 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
533 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
534 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
535 0
536};
537
538/*
539 * Japanese Broadcast Channels:
540 *
541 * 1: 91.25MHz - 3: 103.25MHz
542 * 4: 171.25MHz - 7: 189.25MHz
543 * 8: 193.25MHz - 12: 217.25MHz (VHF)
544 * 13: 471.25MHz - 62: 765.25MHz (UHF)
545 *
546 * IF freq: 45.75 mHz
547 * OR
548 * IF freq: 58.75 mHz
549 */
550#define OFFSET 6.00
551#define IF_FREQ 45.75
552static int jpnbcst[] = {
553 62, (int)(IF_FREQ * FREQFACTOR), 0,
554 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
555 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
556 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
557 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
558 0
559};
560#undef IF_FREQ
561#undef OFFSET
562
563/*
564 * Japanese Cable Channels:
565 *
566 * 1: 91.25MHz - 3: 103.25MHz
567 * 4: 171.25MHz - 7: 189.25MHz
568 * 8: 193.25MHz - 12: 217.25MHz
569 * 13: 109.25MHz - 21: 157.25MHz
570 * 22: 165.25MHz
571 * 23: 223.25MHz - 63: 463.25MHz
572 *
573 * IF freq: 45.75 mHz
574 */
575#define OFFSET 6.00
576#define IF_FREQ 45.75
577static int jpncable[] = {
578 63, (int)(IF_FREQ * FREQFACTOR), 0,
579 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
580 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
581 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
582 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
583 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
584 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
585 0
586};
587#undef IF_FREQ
588#undef OFFSET
589
590/*
591 * xUSSR Broadcast Channels:
592 *
593 * 1: 49.75MHz - 2: 59.25MHz
594 * 3: 77.25MHz - 5: 93.25MHz
595 * 6: 175.25MHz - 12: 223.25MHz
596 * 13-20 - not exist
597 * 21: 471.25MHz - 34: 575.25MHz
598 * 35: 583.25MHz - 69: 855.25MHz
599 *
600 * Cable channels
601 *
602 * 70: 111.25MHz - 77: 167.25MHz
603 * 78: 231.25MHz -107: 463.25MHz
604 *
605 * IF freq: 38.90 MHz
606 */
607#define IF_FREQ 38.90
608static int xussr[] = {
609 107, (int)(IF_FREQ * FREQFACTOR), 0,
610 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
611 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
612 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
613 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
614 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
615 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
616 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR),
617 0
618};
619#undef IF_FREQ
620
621/*
622 * Australian broadcast channels
623 */
624#define OFFSET 7.00
625#define IF_FREQ 38.90
626static int australia[] = {
627 83, (int)(IF_FREQ * FREQFACTOR), 0,
628 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
629 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
630 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
631 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
632 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
633 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
634 0
635};
636#undef OFFSET
637#undef IF_FREQ
638
639/*
640 * France broadcast channels
641 */
642#define OFFSET 8.00
643#define IF_FREQ 38.90
644static int france[] = {
645 69, (int)(IF_FREQ * FREQFACTOR), 0,
646 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */
647 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */
648 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */
649 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */
650 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */
651 0
652};
653#undef OFFSET
654#undef IF_FREQ
655
656static struct {
657 int *ptr;
658 char name[BT848_MAX_CHNLSET_NAME_LEN];
659} freqTable[] = {
660 {NULL, ""},
661 {nabcst, "nabcst"},
662 {irccable, "cableirc"},
663 {hrccable, "cablehrc"},
664 {weurope, "weurope"},
665 {jpnbcst, "jpnbcst"},
666 {jpncable, "jpncable"},
667 {xussr, "xussr"},
668 {australia, "australia"},
669 {france, "france"},
670
671};
672
673#define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ]
674#define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ]
675#define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ]
676static int
677frequency_lookup( bktr_ptr_t bktr, int channel )
678{
679 int x;
680
681 /* check for "> MAX channel" */
682 x = 0;
683 if ( channel > TBL_CHNL )
684 return( -1 );
685
686 /* search the table for data */
687 for ( x = 3; TBL_CHNL; x += 3 ) {
688 if ( channel >= TBL_CHNL ) {
689 return( TBL_BASE_FREQ +
690 ((channel - TBL_CHNL) * TBL_OFFSET) );
691 }
692 }
693
694 /* not found, must be below the MIN channel */
695 return( -1 );
696}
697#undef TBL_OFFSET
698#undef TBL_BASE_FREQ
699#undef TBL_CHNL
700
701
702#define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ]
703
704
705/* Initialise the tuner structures in the bktr_softc */
706/* This is needed as the tuner details are no longer globally declared */
707
708void select_tuner( bktr_ptr_t bktr, int tuner_type ) {
709 if (tuner_type < Bt848_MAX_TUNER) {
710 bktr->card.tuner = &tuners[ tuner_type ];
711 } else {
712 bktr->card.tuner = NULL;
713 }
714}
715
716/*
717 * Tuner Notes:
718 * Programming the tuner properly is quite complicated.
719 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner.
720 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of
721 * 87.5 Mhz to 108.0 Mhz.
722 *
723 * RF and IF. RF = radio frequencies, it is the transmitted signal.
724 * IF is the Intermediate Frequency (the offset from the base
725 * signal where the video, color, audio and NICAM signals are.
726 *
727 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz
728 * NICAM at 32.348 Mhz.
729 * Strangely enough, there is an IF (intermediate frequency) for
730 * FM Radio which is 10.7 Mhz.
731 *
732 * The tuner also works in Bands. Philips bands are
733 * FM radio band 87.50 to 108.00 MHz
734 * Low band 45.75 to 170.00 MHz
735 * Mid band 170.00 to 450.00 MHz
736 * High band 450.00 to 855.25 MHz
737 *
738 *
739 * Now we need to set the PLL on the tuner to the required freuqncy.
740 * It has a programmable divisor.
741 * For TV we want
742 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF
743 * are in MHz.
744
745 * For RADIO we want a different equation.
746 * freq IF is 10.70 MHz (so the data sheet tells me)
747 * N = (freq RF + freq IF) / step size
748 * The step size must be set to 50 khz (so the data sheet tells me)
749 * (note this is 50 kHz, the other things are in MHz)
750 * so we end up with N = 20x(freq RF + 10.7)
751 *
752 */
753
754#define LOW_BAND 0
755#define MID_BAND 1
756#define HIGH_BAND 2
757#define FM_RADIO_BAND 3
758
759
760/* Check if these are correct for other than Philips PAL */
761#define STATUSBIT_COLD 0x80
762#define STATUSBIT_LOCK 0x40
763#define STATUSBIT_TV 0x20
764#define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */
765#define STATUSBIT_ADC 0x07
766
767/*
768 * set the frequency of the tuner
769 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16
770 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100
771 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625)
772 *
773 */
774int
775tv_freq( bktr_ptr_t bktr, int frequency, int type )
776{
777 const struct TUNER* tuner;
778 u_char addr;
779 u_char control;
780 u_char band;
781 int N;
782 int band_select = 0;
783#if defined( TEST_TUNER_AFC )
784 int oldFrequency, afcDelta;
785#endif
786
787 tuner = bktr->card.tuner;
788 if ( tuner == NULL )
789 return( -1 );
790
791 if (type == TV_FREQUENCY) {
792 /*
793 * select the band based on frequency
794 * XXX FIXME: get the cross-over points from the tuner struct
795 */
796 if ( frequency < (160 * FREQFACTOR ) )
797 band_select = LOW_BAND;
798 else if ( frequency < (454 * FREQFACTOR ) )
799 band_select = MID_BAND;
800 else
801 band_select = HIGH_BAND;
802
803#if defined( TEST_TUNER_AFC )
804 if ( bktr->tuner.afc )
805 frequency -= 4;
806#endif
807 /*
808 * N = 16 * { fRF(pc) + fIF(pc) }
809 * or N = 16* fRF(pc) + 16*fIF(pc) }
810 * where:
811 * pc is picture carrier, fRF & fIF are in MHz
812 *
813 * fortunatly, frequency is passed in as MHz * 16
814 * and the TBL_IF frequency is also stored in MHz * 16
815 */
816 N = frequency + TBL_IF;
817
818 /* set the address of the PLL */
819 addr = bktr->card.tuner_pllAddr;
820 control = tuner->pllControl[ band_select ];
821 band = tuner->bandAddrs[ band_select ];
822
823 if(!(band && control)) /* Don't try to set un- */
824 return(-1); /* supported modes. */
825
826 if ( frequency > bktr->tuner.frequency ) {
827 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
828 i2cWrite( bktr, addr, control, band );
829 }
830 else {
831 i2cWrite( bktr, addr, control, band );
832 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
833 }
834
835#if defined( TUNER_AFC )
836 if ( bktr->tuner.afc == TRUE ) {
837#if defined( TEST_TUNER_AFC )
838 oldFrequency = frequency;
839#endif
840 if ( (N = do_afc( bktr, addr, N )) < 0 ) {
841 /* AFC failed, restore requested frequency */
842 N = frequency + TBL_IF;
843#if defined( TEST_TUNER_AFC )
844 printf("%s: do_afc: failed to lock\n",
845 bktr_name(bktr));
846#endif
847 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
848 }
849 else
850 frequency = N - TBL_IF;
851#if defined( TEST_TUNER_AFC )
852 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16);
853 afcDelta = frequency - oldFrequency;
854 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16);
855#endif
856 }
857#endif /* TUNER_AFC */
858
859 bktr->tuner.frequency = frequency;
860 }
861
862 if ( type == FM_RADIO_FREQUENCY ) {
863 band_select = FM_RADIO_BAND;
864
865 /*
866 * N = { fRF(pc) + fIF(pc) }/step_size
867 * The step size is 50kHz for FM radio.
868 * (eg after 102.35MHz comes 102.40 MHz)
869 * fIF is 10.7 MHz (as detailed in the specs)
870 *
871 * frequency is passed in as MHz * 100
872 *
873 * So, we have N = (frequency/100 + 10.70) /(50/1000)
874 */
875 N = (frequency + 1070)/5;
876
877 /* set the address of the PLL */
878 addr = bktr->card.tuner_pllAddr;
879 control = tuner->pllControl[ band_select ];
880 band = tuner->bandAddrs[ band_select ];
881
882 if(!(band && control)) /* Don't try to set un- */
883 return(-1); /* supported modes. */
884
885 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in
886 * the ioctls RADIO_SETMODE
887 * and RADIO_GETMODE */
888
889 i2cWrite( bktr, addr, control, band );
890 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
891
892 bktr->tuner.frequency = (N * 5) - 1070;
893
894
895 }
896
897
898 return( 0 );
899}
900
901
902
903#if defined( TUNER_AFC )
904/*
905 *
906 */
907int
908do_afc( bktr_ptr_t bktr, int addr, int frequency )
909{
910 int step;
911 int status;
912 int origFrequency;
913
914 origFrequency = frequency;
915
916 /* wait for first setting to take effect */
917 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 );
918
919 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
920 return( -1 );
921
922#if defined( TEST_TUNER_AFC )
923 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
924#endif
925 for ( step = 0; step < AFC_MAX_STEP; ++step ) {
926 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
927 goto fubar;
928 if ( !(status & 0x40) ) {
929#if defined( TEST_TUNER_AFC )
930 printf( "%s: no lock!\n", bktr_name(bktr) );
931#endif
932 goto fubar;
933 }
934
935 switch( status & AFC_BITS ) {
936 case AFC_FREQ_CENTERED:
937#if defined( TEST_TUNER_AFC )
938 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
939#endif
940 return( frequency );
941
942 case AFC_FREQ_MINUS_125:
943 case AFC_FREQ_MINUS_62:
944#if defined( TEST_TUNER_AFC )
945 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
946#endif
947 --frequency;
948 break;
949
950 case AFC_FREQ_PLUS_62:
951 case AFC_FREQ_PLUS_125:
952#if defined( TEST_TUNER_AFC )
953 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
954#endif
955 ++frequency;
956 break;
957 }
958
959 i2cWrite( bktr, addr,
960 (frequency>>8) & 0x7f, frequency & 0xff );
961 DELAY( AFC_DELAY );
962 }
963
964 fubar:
965 i2cWrite( bktr, addr,
966 (origFrequency>>8) & 0x7f, origFrequency & 0xff );
967
968 return( -1 );
969}
970#endif /* TUNER_AFC */
971#undef TBL_IF
972
973
974/*
975 * Get the Tuner status and signal strength
976 */
977int get_tuner_status( bktr_ptr_t bktr ) {
978 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 );
979}
980
981/*
982 * set the channel of the tuner
983 */
984int
985tv_channel( bktr_ptr_t bktr, int channel )
986{
987 int frequency;
988
989 /* calculate the frequency according to tuner type */
990 if ( (frequency = frequency_lookup( bktr, channel )) < 0 )
991 return( -1 );
992
993 /* set the new frequency */
994 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 )
995 return( -1 );
996
997 /* OK to update records */
998 return( (bktr->tuner.channel = channel) );
999}
1000
1001/*
1002 * get channelset name
1003 */
1004int
1005tuner_getchnlset(struct bktr_chnlset *chnlset)
1006{
1007 if (( chnlset->index < CHNLSET_MIN ) ||
1008 ( chnlset->index > CHNLSET_MAX ))
1009 return( EINVAL );
1010
1011 memcpy(&chnlset->name, &freqTable[chnlset->index].name,
1012 BT848_MAX_CHNLSET_NAME_LEN);
1013
1014 chnlset->max_channel=freqTable[chnlset->index].ptr[0];
1015 return( 0 );
1016}
2
3/*
4 * This is part of the Driver for Video Capture Cards (Frame grabbers)
5 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
6 * chipset.
7 * Copyright Roger Hardiman and Amancio Hasty.
8 *
9 * bktr_tuner : This deals with controlling the tuner fitted to TV cards.
10 *
11 */
12
13/*
14 * 1. Redistributions of source code must retain the
15 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 * 3. All advertising materials mentioning features or use of this software
27 * must display the following acknowledgement:
28 * This product includes software developed by Amancio Hasty and
29 * Roger Hardiman
30 * 4. The name of the author may not be used to endorse or promote products
31 * derived from this software without specific prior written permission.
32 *
33 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
34 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
35 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
36 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
37 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
42 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
43 * POSSIBILITY OF SUCH DAMAGE.
44 */
45
46
47
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/kernel.h>
51#include <sys/vnode.h>
52#ifdef __NetBSD__
53#include <sys/proc.h>
54#endif
55
56#ifdef __FreeBSD__
57#include <pci/pcivar.h>
58
59#if (__FreeBSD_version < 500000)
60#include <machine/clock.h> /* for DELAY */
61#endif
62
63#if (__FreeBSD_version >=300000)
64#include <machine/bus_memio.h> /* for bus space */
65#include <machine/bus.h>
66#include <sys/bus.h>
67#endif
68#endif
69
70#ifdef __NetBSD__
71#include <dev/ic/bt8xx.h> /* NetBSD .h file location */
72#include <dev/pci/bktr/bktr_reg.h>
73#include <dev/pci/bktr/bktr_tuner.h>
74#include <dev/pci/bktr/bktr_card.h>
75#include <dev/pci/bktr/bktr_core.h>
76#else
77#include <machine/ioctl_meteor.h> /* Traditional .h file location */
78#include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
79#include <dev/bktr/bktr_reg.h>
80#include <dev/bktr/bktr_tuner.h>
81#include <dev/bktr/bktr_card.h>
82#include <dev/bktr/bktr_core.h>
83#endif
84
85
86
87#if defined( TUNER_AFC )
88#define AFC_DELAY 10000 /* 10 millisend delay */
89#define AFC_BITS 0x07
90#define AFC_FREQ_MINUS_125 0x00
91#define AFC_FREQ_MINUS_62 0x01
92#define AFC_FREQ_CENTERED 0x02
93#define AFC_FREQ_PLUS_62 0x03
94#define AFC_FREQ_PLUS_125 0x04
95#define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */
96#endif /* TUNER_AFC */
97
98
99#define TTYPE_XXX 0
100#define TTYPE_NTSC 1
101#define TTYPE_NTSC_J 2
102#define TTYPE_PAL 3
103#define TTYPE_PAL_M 4
104#define TTYPE_PAL_N 5
105#define TTYPE_SECAM 6
106
107#define TSA552x_CB_MSB (0x80)
108#define TSA552x_CB_CP (1<<6) /* set this for fast tuning */
109#define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */
110#define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */
111#define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */
112#define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */
113#define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/
114#define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */
115
116#define TSA552x_RADIO (TSA552x_CB_MSB | \
117 TSA552x_CB_T0)
118
119/* raise the charge pump voltage for fast tuning */
120#define TSA552x_FCONTROL (TSA552x_CB_MSB | \
121 TSA552x_CB_CP | \
122 TSA552x_CB_T0 | \
123 TSA552x_CB_RSA | \
124 TSA552x_CB_RSB)
125
126/* lower the charge pump voltage for better residual oscillator FM */
127#define TSA552x_SCONTROL (TSA552x_CB_MSB | \
128 TSA552x_CB_T0 | \
129 TSA552x_CB_RSA | \
130 TSA552x_CB_RSB)
131
132/* The control value for the ALPS TSCH5 Tuner */
133#define TSCH5_FCONTROL 0x82
134#define TSCH5_RADIO 0x86
135
136/* The control value for the ALPS TSBH1 Tuner */
137#define TSBH1_FCONTROL 0xce
138
139
140static const struct TUNER tuners[] = {
141/* XXX FIXME: fill in the band-switch crosspoints */
142 /* NO_TUNER */
143 { "<no>", /* the 'name' */
144 TTYPE_XXX, /* input type */
145 { 0x00, /* control byte for Tuner PLL */
146 0x00,
147 0x00,
148 0x00 },
149 { 0x00, 0x00 }, /* band-switch crosspoints */
150 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
151
152 /* TEMIC_NTSC */
153 { "Temic NTSC", /* the 'name' */
154 TTYPE_NTSC, /* input type */
155 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
156 TSA552x_SCONTROL,
157 TSA552x_SCONTROL,
158 0x00 },
159 { 0x00, 0x00}, /* band-switch crosspoints */
160 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
161
162 /* TEMIC_PAL */
163 { "Temic PAL", /* the 'name' */
164 TTYPE_PAL, /* input type */
165 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
166 TSA552x_SCONTROL,
167 TSA552x_SCONTROL,
168 0x00 },
169 { 0x00, 0x00 }, /* band-switch crosspoints */
170 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
171
172 /* TEMIC_SECAM */
173 { "Temic SECAM", /* the 'name' */
174 TTYPE_SECAM, /* input type */
175 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
176 TSA552x_SCONTROL,
177 TSA552x_SCONTROL,
178 0x00 },
179 { 0x00, 0x00 }, /* band-switch crosspoints */
180 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
181
182 /* PHILIPS_NTSC */
183 { "Philips NTSC", /* the 'name' */
184 TTYPE_NTSC, /* input type */
185 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
186 TSA552x_SCONTROL,
187 TSA552x_SCONTROL,
188 0x00 },
189 { 0x00, 0x00 }, /* band-switch crosspoints */
190 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
191
192 /* PHILIPS_PAL */
193 { "Philips PAL", /* the 'name' */
194 TTYPE_PAL, /* input type */
195 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
196 TSA552x_SCONTROL,
197 TSA552x_SCONTROL,
198 0x00 },
199 { 0x00, 0x00 }, /* band-switch crosspoints */
200 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
201
202 /* PHILIPS_SECAM */
203 { "Philips SECAM", /* the 'name' */
204 TTYPE_SECAM, /* input type */
205 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
206 TSA552x_SCONTROL,
207 TSA552x_SCONTROL,
208 0x00 },
209 { 0x00, 0x00 }, /* band-switch crosspoints */
210 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */
211
212 /* TEMIC_PAL I */
213 { "Temic PAL I", /* the 'name' */
214 TTYPE_PAL, /* input type */
215 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
216 TSA552x_SCONTROL,
217 TSA552x_SCONTROL,
218 0x00 },
219 { 0x00, 0x00 }, /* band-switch crosspoints */
220 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
221
222 /* PHILIPS_PALI */
223 { "Philips PAL I", /* the 'name' */
224 TTYPE_PAL, /* input type */
225 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
226 TSA552x_SCONTROL,
227 TSA552x_SCONTROL,
228 0x00 },
229 { 0x00, 0x00 }, /* band-switch crosspoints */
230 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
231
232 /* PHILIPS_FR1236_NTSC */
233 { "Philips FR1236 NTSC FM", /* the 'name' */
234 TTYPE_NTSC, /* input type */
235 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
236 TSA552x_FCONTROL,
237 TSA552x_FCONTROL,
238 TSA552x_RADIO },
239 { 0x00, 0x00 }, /* band-switch crosspoints */
240 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
241
242 /* PHILIPS_FR1216_PAL */
243 { "Philips FR1216 PAL FM" , /* the 'name' */
244 TTYPE_PAL, /* input type */
245 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
246 TSA552x_FCONTROL,
247 TSA552x_FCONTROL,
248 TSA552x_RADIO },
249 { 0x00, 0x00 }, /* band-switch crosspoints */
250 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
251
252 /* PHILIPS_FR1236_SECAM */
253 { "Philips FR1236 SECAM FM", /* the 'name' */
254 TTYPE_SECAM, /* input type */
255 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
256 TSA552x_FCONTROL,
257 TSA552x_FCONTROL,
258 TSA552x_RADIO },
259 { 0x00, 0x00 }, /* band-switch crosspoints */
260 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */
261
262 /* ALPS TSCH5 NTSC */
263 { "ALPS TSCH5 NTSC FM", /* the 'name' */
264 TTYPE_NTSC, /* input type */
265 { TSCH5_FCONTROL, /* control byte for Tuner PLL */
266 TSCH5_FCONTROL,
267 TSCH5_FCONTROL,
268 TSCH5_RADIO },
269 { 0x00, 0x00 }, /* band-switch crosspoints */
270 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */
271
272 /* ALPS TSBH1 NTSC */
273 { "ALPS TSBH1 NTSC", /* the 'name' */
274 TTYPE_NTSC, /* input type */
275 { TSBH1_FCONTROL, /* control byte for Tuner PLL */
276 TSBH1_FCONTROL,
277 TSBH1_FCONTROL,
278 0x00 },
279 { 0x00, 0x00 }, /* band-switch crosspoints */
280 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */
281};
282
283
284/* scaling factor for frequencies expressed as ints */
285#define FREQFACTOR 16
286
287/*
288 * Format:
289 * entry 0: MAX legal channel
290 * entry 1: IF frequency
291 * expressed as fi{mHz} * 16,
292 * eg 45.75mHz == 45.75 * 16 = 732
293 * entry 2: [place holder/future]
294 * entry 3: base of channel record 0
295 * entry 3 + (x*3): base of channel record 'x'
296 * entry LAST: NULL channel entry marking end of records
297 *
298 * Record:
299 * int 0: base channel
300 * int 1: frequency of base channel,
301 * expressed as fb{mHz} * 16,
302 * int 2: offset frequency between channels,
303 * expressed as fo{mHz} * 16,
304 */
305
306/*
307 * North American Broadcast Channels:
308 *
309 * 2: 55.25 mHz - 4: 67.25 mHz
310 * 5: 77.25 mHz - 6: 83.25 mHz
311 * 7: 175.25 mHz - 13: 211.25 mHz
312 * 14: 471.25 mHz - 83: 885.25 mHz
313 *
314 * IF freq: 45.75 mHz
315 */
316#define OFFSET 6.00
317static int nabcst[] = {
318 83, (int)( 45.75 * FREQFACTOR), 0,
319 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
320 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
321 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
322 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
323 0
324};
325#undef OFFSET
326
327/*
328 * North American Cable Channels, IRC:
329 *
330 * 2: 55.25 mHz - 4: 67.25 mHz
331 * 5: 77.25 mHz - 6: 83.25 mHz
332 * 7: 175.25 mHz - 13: 211.25 mHz
333 * 14: 121.25 mHz - 22: 169.25 mHz
334 * 23: 217.25 mHz - 94: 643.25 mHz
335 * 95: 91.25 mHz - 99: 115.25 mHz
336 *
337 * IF freq: 45.75 mHz
338 */
339#define OFFSET 6.00
340static int irccable[] = {
341 116, (int)( 45.75 * FREQFACTOR), 0,
342 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
343 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
344 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
345 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
346 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
347 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
348 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
349 0
350};
351#undef OFFSET
352
353/*
354 * North American Cable Channels, HRC:
355 *
356 * 2: 54 mHz - 4: 66 mHz
357 * 5: 78 mHz - 6: 84 mHz
358 * 7: 174 mHz - 13: 210 mHz
359 * 14: 120 mHz - 22: 168 mHz
360 * 23: 216 mHz - 94: 642 mHz
361 * 95: 90 mHz - 99: 114 mHz
362 *
363 * IF freq: 45.75 mHz
364 */
365#define OFFSET 6.00
366static int hrccable[] = {
367 116, (int)( 45.75 * FREQFACTOR), 0,
368 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
369 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
370 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
371 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
372 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
373 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
374 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
375 0
376};
377#undef OFFSET
378
379/*
380 * Western European broadcast channels:
381 *
382 * (there are others that appear to vary between countries - rmt)
383 *
384 * here's the table Philips provides:
385 * caution, some of the offsets don't compute...
386 *
387 * 1 4525 700 N21
388 *
389 * 2 4825 700 E2
390 * 3 5525 700 E3
391 * 4 6225 700 E4
392 *
393 * 5 17525 700 E5
394 * 6 18225 700 E6
395 * 7 18925 700 E7
396 * 8 19625 700 E8
397 * 9 20325 700 E9
398 * 10 21025 700 E10
399 * 11 21725 700 E11
400 * 12 22425 700 E12
401 *
402 * 13 5375 700 ITA
403 * 14 6225 700 ITB
404 *
405 * 15 8225 700 ITC
406 *
407 * 16 17525 700 ITD
408 * 17 18325 700 ITE
409 *
410 * 18 19225 700 ITF
411 * 19 20125 700 ITG
412 * 20 21025 700 ITH
413 *
414 * 21 47125 800 E21
415 * 22 47925 800 E22
416 * 23 48725 800 E23
417 * 24 49525 800 E24
418 * 25 50325 800 E25
419 * 26 51125 800 E26
420 * 27 51925 800 E27
421 * 28 52725 800 E28
422 * 29 53525 800 E29
423 * 30 54325 800 E30
424 * 31 55125 800 E31
425 * 32 55925 800 E32
426 * 33 56725 800 E33
427 * 34 57525 800 E34
428 * 35 58325 800 E35
429 * 36 59125 800 E36
430 * 37 59925 800 E37
431 * 38 60725 800 E38
432 * 39 61525 800 E39
433 * 40 62325 800 E40
434 * 41 63125 800 E41
435 * 42 63925 800 E42
436 * 43 64725 800 E43
437 * 44 65525 800 E44
438 * 45 66325 800 E45
439 * 46 67125 800 E46
440 * 47 67925 800 E47
441 * 48 68725 800 E48
442 * 49 69525 800 E49
443 * 50 70325 800 E50
444 * 51 71125 800 E51
445 * 52 71925 800 E52
446 * 53 72725 800 E53
447 * 54 73525 800 E54
448 * 55 74325 800 E55
449 * 56 75125 800 E56
450 * 57 75925 800 E57
451 * 58 76725 800 E58
452 * 59 77525 800 E59
453 * 60 78325 800 E60
454 * 61 79125 800 E61
455 * 62 79925 800 E62
456 * 63 80725 800 E63
457 * 64 81525 800 E64
458 * 65 82325 800 E65
459 * 66 83125 800 E66
460 * 67 83925 800 E67
461 * 68 84725 800 E68
462 * 69 85525 800 E69
463 *
464 * 70 4575 800 IA
465 * 71 5375 800 IB
466 * 72 6175 800 IC
467 *
468 * 74 6925 700 S01
469 * 75 7625 700 S02
470 * 76 8325 700 S03
471 *
472 * 80 10525 700 S1
473 * 81 11225 700 S2
474 * 82 11925 700 S3
475 * 83 12625 700 S4
476 * 84 13325 700 S5
477 * 85 14025 700 S6
478 * 86 14725 700 S7
479 * 87 15425 700 S8
480 * 88 16125 700 S9
481 * 89 16825 700 S10
482 * 90 23125 700 S11
483 * 91 23825 700 S12
484 * 92 24525 700 S13
485 * 93 25225 700 S14
486 * 94 25925 700 S15
487 * 95 26625 700 S16
488 * 96 27325 700 S17
489 * 97 28025 700 S18
490 * 98 28725 700 S19
491 * 99 29425 700 S20
492 *
493 *
494 * Channels S21 - S41 are taken from
495 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html
496 *
497 * 100 30325 800 S21
498 * 101 31125 800 S22
499 * 102 31925 800 S23
500 * 103 32725 800 S24
501 * 104 33525 800 S25
502 * 105 34325 800 S26
503 * 106 35125 800 S27
504 * 107 35925 800 S28
505 * 108 36725 800 S29
506 * 109 37525 800 S30
507 * 110 38325 800 S31
508 * 111 39125 800 S32
509 * 112 39925 800 S33
510 * 113 40725 800 S34
511 * 114 41525 800 S35
512 * 115 42325 800 S36
513 * 116 43125 800 S37
514 * 117 43925 800 S38
515 * 118 44725 800 S39
516 * 119 45525 800 S40
517 * 120 46325 800 S41
518 *
519 * 121 3890 000 IFFREQ
520 *
521 */
522static int weurope[] = {
523 121, (int)( 38.90 * FREQFACTOR), 0,
524 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
525 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
526 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
527 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
528 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
529 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
530 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
531 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
532 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
533 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
534 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
535 0
536};
537
538/*
539 * Japanese Broadcast Channels:
540 *
541 * 1: 91.25MHz - 3: 103.25MHz
542 * 4: 171.25MHz - 7: 189.25MHz
543 * 8: 193.25MHz - 12: 217.25MHz (VHF)
544 * 13: 471.25MHz - 62: 765.25MHz (UHF)
545 *
546 * IF freq: 45.75 mHz
547 * OR
548 * IF freq: 58.75 mHz
549 */
550#define OFFSET 6.00
551#define IF_FREQ 45.75
552static int jpnbcst[] = {
553 62, (int)(IF_FREQ * FREQFACTOR), 0,
554 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
555 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
556 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
557 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
558 0
559};
560#undef IF_FREQ
561#undef OFFSET
562
563/*
564 * Japanese Cable Channels:
565 *
566 * 1: 91.25MHz - 3: 103.25MHz
567 * 4: 171.25MHz - 7: 189.25MHz
568 * 8: 193.25MHz - 12: 217.25MHz
569 * 13: 109.25MHz - 21: 157.25MHz
570 * 22: 165.25MHz
571 * 23: 223.25MHz - 63: 463.25MHz
572 *
573 * IF freq: 45.75 mHz
574 */
575#define OFFSET 6.00
576#define IF_FREQ 45.75
577static int jpncable[] = {
578 63, (int)(IF_FREQ * FREQFACTOR), 0,
579 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
580 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
581 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
582 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
583 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
584 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
585 0
586};
587#undef IF_FREQ
588#undef OFFSET
589
590/*
591 * xUSSR Broadcast Channels:
592 *
593 * 1: 49.75MHz - 2: 59.25MHz
594 * 3: 77.25MHz - 5: 93.25MHz
595 * 6: 175.25MHz - 12: 223.25MHz
596 * 13-20 - not exist
597 * 21: 471.25MHz - 34: 575.25MHz
598 * 35: 583.25MHz - 69: 855.25MHz
599 *
600 * Cable channels
601 *
602 * 70: 111.25MHz - 77: 167.25MHz
603 * 78: 231.25MHz -107: 463.25MHz
604 *
605 * IF freq: 38.90 MHz
606 */
607#define IF_FREQ 38.90
608static int xussr[] = {
609 107, (int)(IF_FREQ * FREQFACTOR), 0,
610 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
611 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
612 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
613 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
614 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
615 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
616 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR),
617 0
618};
619#undef IF_FREQ
620
621/*
622 * Australian broadcast channels
623 */
624#define OFFSET 7.00
625#define IF_FREQ 38.90
626static int australia[] = {
627 83, (int)(IF_FREQ * FREQFACTOR), 0,
628 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
629 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
630 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
631 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
632 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
633 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
634 0
635};
636#undef OFFSET
637#undef IF_FREQ
638
639/*
640 * France broadcast channels
641 */
642#define OFFSET 8.00
643#define IF_FREQ 38.90
644static int france[] = {
645 69, (int)(IF_FREQ * FREQFACTOR), 0,
646 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */
647 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */
648 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */
649 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */
650 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */
651 0
652};
653#undef OFFSET
654#undef IF_FREQ
655
656static struct {
657 int *ptr;
658 char name[BT848_MAX_CHNLSET_NAME_LEN];
659} freqTable[] = {
660 {NULL, ""},
661 {nabcst, "nabcst"},
662 {irccable, "cableirc"},
663 {hrccable, "cablehrc"},
664 {weurope, "weurope"},
665 {jpnbcst, "jpnbcst"},
666 {jpncable, "jpncable"},
667 {xussr, "xussr"},
668 {australia, "australia"},
669 {france, "france"},
670
671};
672
673#define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ]
674#define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ]
675#define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ]
676static int
677frequency_lookup( bktr_ptr_t bktr, int channel )
678{
679 int x;
680
681 /* check for "> MAX channel" */
682 x = 0;
683 if ( channel > TBL_CHNL )
684 return( -1 );
685
686 /* search the table for data */
687 for ( x = 3; TBL_CHNL; x += 3 ) {
688 if ( channel >= TBL_CHNL ) {
689 return( TBL_BASE_FREQ +
690 ((channel - TBL_CHNL) * TBL_OFFSET) );
691 }
692 }
693
694 /* not found, must be below the MIN channel */
695 return( -1 );
696}
697#undef TBL_OFFSET
698#undef TBL_BASE_FREQ
699#undef TBL_CHNL
700
701
702#define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ]
703
704
705/* Initialise the tuner structures in the bktr_softc */
706/* This is needed as the tuner details are no longer globally declared */
707
708void select_tuner( bktr_ptr_t bktr, int tuner_type ) {
709 if (tuner_type < Bt848_MAX_TUNER) {
710 bktr->card.tuner = &tuners[ tuner_type ];
711 } else {
712 bktr->card.tuner = NULL;
713 }
714}
715
716/*
717 * Tuner Notes:
718 * Programming the tuner properly is quite complicated.
719 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner.
720 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of
721 * 87.5 Mhz to 108.0 Mhz.
722 *
723 * RF and IF. RF = radio frequencies, it is the transmitted signal.
724 * IF is the Intermediate Frequency (the offset from the base
725 * signal where the video, color, audio and NICAM signals are.
726 *
727 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz
728 * NICAM at 32.348 Mhz.
729 * Strangely enough, there is an IF (intermediate frequency) for
730 * FM Radio which is 10.7 Mhz.
731 *
732 * The tuner also works in Bands. Philips bands are
733 * FM radio band 87.50 to 108.00 MHz
734 * Low band 45.75 to 170.00 MHz
735 * Mid band 170.00 to 450.00 MHz
736 * High band 450.00 to 855.25 MHz
737 *
738 *
739 * Now we need to set the PLL on the tuner to the required freuqncy.
740 * It has a programmable divisor.
741 * For TV we want
742 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF
743 * are in MHz.
744
745 * For RADIO we want a different equation.
746 * freq IF is 10.70 MHz (so the data sheet tells me)
747 * N = (freq RF + freq IF) / step size
748 * The step size must be set to 50 khz (so the data sheet tells me)
749 * (note this is 50 kHz, the other things are in MHz)
750 * so we end up with N = 20x(freq RF + 10.7)
751 *
752 */
753
754#define LOW_BAND 0
755#define MID_BAND 1
756#define HIGH_BAND 2
757#define FM_RADIO_BAND 3
758
759
760/* Check if these are correct for other than Philips PAL */
761#define STATUSBIT_COLD 0x80
762#define STATUSBIT_LOCK 0x40
763#define STATUSBIT_TV 0x20
764#define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */
765#define STATUSBIT_ADC 0x07
766
767/*
768 * set the frequency of the tuner
769 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16
770 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100
771 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625)
772 *
773 */
774int
775tv_freq( bktr_ptr_t bktr, int frequency, int type )
776{
777 const struct TUNER* tuner;
778 u_char addr;
779 u_char control;
780 u_char band;
781 int N;
782 int band_select = 0;
783#if defined( TEST_TUNER_AFC )
784 int oldFrequency, afcDelta;
785#endif
786
787 tuner = bktr->card.tuner;
788 if ( tuner == NULL )
789 return( -1 );
790
791 if (type == TV_FREQUENCY) {
792 /*
793 * select the band based on frequency
794 * XXX FIXME: get the cross-over points from the tuner struct
795 */
796 if ( frequency < (160 * FREQFACTOR ) )
797 band_select = LOW_BAND;
798 else if ( frequency < (454 * FREQFACTOR ) )
799 band_select = MID_BAND;
800 else
801 band_select = HIGH_BAND;
802
803#if defined( TEST_TUNER_AFC )
804 if ( bktr->tuner.afc )
805 frequency -= 4;
806#endif
807 /*
808 * N = 16 * { fRF(pc) + fIF(pc) }
809 * or N = 16* fRF(pc) + 16*fIF(pc) }
810 * where:
811 * pc is picture carrier, fRF & fIF are in MHz
812 *
813 * fortunatly, frequency is passed in as MHz * 16
814 * and the TBL_IF frequency is also stored in MHz * 16
815 */
816 N = frequency + TBL_IF;
817
818 /* set the address of the PLL */
819 addr = bktr->card.tuner_pllAddr;
820 control = tuner->pllControl[ band_select ];
821 band = tuner->bandAddrs[ band_select ];
822
823 if(!(band && control)) /* Don't try to set un- */
824 return(-1); /* supported modes. */
825
826 if ( frequency > bktr->tuner.frequency ) {
827 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
828 i2cWrite( bktr, addr, control, band );
829 }
830 else {
831 i2cWrite( bktr, addr, control, band );
832 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
833 }
834
835#if defined( TUNER_AFC )
836 if ( bktr->tuner.afc == TRUE ) {
837#if defined( TEST_TUNER_AFC )
838 oldFrequency = frequency;
839#endif
840 if ( (N = do_afc( bktr, addr, N )) < 0 ) {
841 /* AFC failed, restore requested frequency */
842 N = frequency + TBL_IF;
843#if defined( TEST_TUNER_AFC )
844 printf("%s: do_afc: failed to lock\n",
845 bktr_name(bktr));
846#endif
847 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
848 }
849 else
850 frequency = N - TBL_IF;
851#if defined( TEST_TUNER_AFC )
852 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16);
853 afcDelta = frequency - oldFrequency;
854 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16);
855#endif
856 }
857#endif /* TUNER_AFC */
858
859 bktr->tuner.frequency = frequency;
860 }
861
862 if ( type == FM_RADIO_FREQUENCY ) {
863 band_select = FM_RADIO_BAND;
864
865 /*
866 * N = { fRF(pc) + fIF(pc) }/step_size
867 * The step size is 50kHz for FM radio.
868 * (eg after 102.35MHz comes 102.40 MHz)
869 * fIF is 10.7 MHz (as detailed in the specs)
870 *
871 * frequency is passed in as MHz * 100
872 *
873 * So, we have N = (frequency/100 + 10.70) /(50/1000)
874 */
875 N = (frequency + 1070)/5;
876
877 /* set the address of the PLL */
878 addr = bktr->card.tuner_pllAddr;
879 control = tuner->pllControl[ band_select ];
880 band = tuner->bandAddrs[ band_select ];
881
882 if(!(band && control)) /* Don't try to set un- */
883 return(-1); /* supported modes. */
884
885 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in
886 * the ioctls RADIO_SETMODE
887 * and RADIO_GETMODE */
888
889 i2cWrite( bktr, addr, control, band );
890 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
891
892 bktr->tuner.frequency = (N * 5) - 1070;
893
894
895 }
896
897
898 return( 0 );
899}
900
901
902
903#if defined( TUNER_AFC )
904/*
905 *
906 */
907int
908do_afc( bktr_ptr_t bktr, int addr, int frequency )
909{
910 int step;
911 int status;
912 int origFrequency;
913
914 origFrequency = frequency;
915
916 /* wait for first setting to take effect */
917 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 );
918
919 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
920 return( -1 );
921
922#if defined( TEST_TUNER_AFC )
923 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
924#endif
925 for ( step = 0; step < AFC_MAX_STEP; ++step ) {
926 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
927 goto fubar;
928 if ( !(status & 0x40) ) {
929#if defined( TEST_TUNER_AFC )
930 printf( "%s: no lock!\n", bktr_name(bktr) );
931#endif
932 goto fubar;
933 }
934
935 switch( status & AFC_BITS ) {
936 case AFC_FREQ_CENTERED:
937#if defined( TEST_TUNER_AFC )
938 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
939#endif
940 return( frequency );
941
942 case AFC_FREQ_MINUS_125:
943 case AFC_FREQ_MINUS_62:
944#if defined( TEST_TUNER_AFC )
945 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
946#endif
947 --frequency;
948 break;
949
950 case AFC_FREQ_PLUS_62:
951 case AFC_FREQ_PLUS_125:
952#if defined( TEST_TUNER_AFC )
953 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
954#endif
955 ++frequency;
956 break;
957 }
958
959 i2cWrite( bktr, addr,
960 (frequency>>8) & 0x7f, frequency & 0xff );
961 DELAY( AFC_DELAY );
962 }
963
964 fubar:
965 i2cWrite( bktr, addr,
966 (origFrequency>>8) & 0x7f, origFrequency & 0xff );
967
968 return( -1 );
969}
970#endif /* TUNER_AFC */
971#undef TBL_IF
972
973
974/*
975 * Get the Tuner status and signal strength
976 */
977int get_tuner_status( bktr_ptr_t bktr ) {
978 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 );
979}
980
981/*
982 * set the channel of the tuner
983 */
984int
985tv_channel( bktr_ptr_t bktr, int channel )
986{
987 int frequency;
988
989 /* calculate the frequency according to tuner type */
990 if ( (frequency = frequency_lookup( bktr, channel )) < 0 )
991 return( -1 );
992
993 /* set the new frequency */
994 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 )
995 return( -1 );
996
997 /* OK to update records */
998 return( (bktr->tuner.channel = channel) );
999}
1000
1001/*
1002 * get channelset name
1003 */
1004int
1005tuner_getchnlset(struct bktr_chnlset *chnlset)
1006{
1007 if (( chnlset->index < CHNLSET_MIN ) ||
1008 ( chnlset->index > CHNLSET_MAX ))
1009 return( EINVAL );
1010
1011 memcpy(&chnlset->name, &freqTable[chnlset->index].name,
1012 BT848_MAX_CHNLSET_NAME_LEN);
1013
1014 chnlset->max_channel=freqTable[chnlset->index].ptr[0];
1015 return( 0 );
1016}