1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * 1. Redistributions of source code must retain the
5 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Amancio Hasty and
19 * Roger Hardiman
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
25 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
32 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38
39 /*
40 * This is part of the Driver for Video Capture Cards (Frame grabbers)
41 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
42 * chipset.
43 * Copyright Roger Hardiman and Amancio Hasty.
44 *
45 * bktr_tuner : This deals with controlling the tuner fitted to TV cards.
46 */
47
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/kernel.h>
51 #ifdef __NetBSD__
52 #include <sys/proc.h>
53 #endif
54
55 #ifdef __FreeBSD__
56 #if (__FreeBSD_version < 500000)
57 #include <machine/clock.h> /* for DELAY */
58 #include <pci/pcivar.h>
59 #else
60 #include <sys/lock.h>
61 #include <sys/mutex.h>
62 #include <sys/selinfo.h>
63 #include <dev/pci/pcivar.h>
64 #endif
65
66 #include <machine/bus.h>
67 #include <sys/bus.h>
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 <dev/bktr/ioctl_meteor.h>
78 #include <dev/bktr/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
140 static void mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq);
141
142
143 static const struct TUNER tuners[] = {
144 /* XXX FIXME: fill in the band-switch crosspoints */
145 /* NO_TUNER */
146 { "<no>", /* the 'name' */
147 TTYPE_XXX, /* input type */
148 { 0x00, /* control byte for Tuner PLL */
149 0x00,
150 0x00,
151 0x00 },
152 { 0x00, 0x00 }, /* band-switch crosspoints */
153 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
154
155 /* TEMIC_NTSC */
156 { "Temic NTSC", /* the 'name' */
157 TTYPE_NTSC, /* input type */
158 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
159 TSA552x_SCONTROL,
160 TSA552x_SCONTROL,
161 0x00 },
162 { 0x00, 0x00}, /* band-switch crosspoints */
163 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
164
165 /* TEMIC_PAL */
166 { "Temic PAL", /* the 'name' */
167 TTYPE_PAL, /* input type */
168 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
169 TSA552x_SCONTROL,
170 TSA552x_SCONTROL,
171 0x00 },
172 { 0x00, 0x00 }, /* band-switch crosspoints */
173 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
174
175 /* TEMIC_SECAM */
176 { "Temic SECAM", /* the 'name' */
177 TTYPE_SECAM, /* input type */
178 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
179 TSA552x_SCONTROL,
180 TSA552x_SCONTROL,
181 0x00 },
182 { 0x00, 0x00 }, /* band-switch crosspoints */
183 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
184
185 /* PHILIPS_NTSC */
186 { "Philips NTSC", /* the 'name' */
187 TTYPE_NTSC, /* input type */
188 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
189 TSA552x_SCONTROL,
190 TSA552x_SCONTROL,
191 0x00 },
192 { 0x00, 0x00 }, /* band-switch crosspoints */
193 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
194
195 /* PHILIPS_PAL */
196 { "Philips PAL", /* the 'name' */
197 TTYPE_PAL, /* input type */
198 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
199 TSA552x_SCONTROL,
200 TSA552x_SCONTROL,
201 0x00 },
202 { 0x00, 0x00 }, /* band-switch crosspoints */
203 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
204
205 /* PHILIPS_SECAM */
206 { "Philips SECAM", /* the 'name' */
207 TTYPE_SECAM, /* input type */
208 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
209 TSA552x_SCONTROL,
210 TSA552x_SCONTROL,
211 0x00 },
212 { 0x00, 0x00 }, /* band-switch crosspoints */
213 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */
214
215 /* TEMIC_PAL I */
216 { "Temic PAL I", /* the 'name' */
217 TTYPE_PAL, /* input type */
218 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
219 TSA552x_SCONTROL,
220 TSA552x_SCONTROL,
221 0x00 },
222 { 0x00, 0x00 }, /* band-switch crosspoints */
223 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
224
225 /* PHILIPS_PALI */
226 { "Philips PAL I", /* the 'name' */
227 TTYPE_PAL, /* input type */
228 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
229 TSA552x_SCONTROL,
230 TSA552x_SCONTROL,
231 0x00 },
232 { 0x00, 0x00 }, /* band-switch crosspoints */
233 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
234
235 /* PHILIPS_FR1236_NTSC */
236 { "Philips FR1236 NTSC FM", /* the 'name' */
237 TTYPE_NTSC, /* input type */
238 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
239 TSA552x_FCONTROL,
240 TSA552x_FCONTROL,
241 TSA552x_RADIO },
242 { 0x00, 0x00 }, /* band-switch crosspoints */
243 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
244
245 /* PHILIPS_FR1216_PAL */
246 { "Philips FR1216 PAL FM" , /* the 'name' */
247 TTYPE_PAL, /* input type */
248 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
249 TSA552x_FCONTROL,
250 TSA552x_FCONTROL,
251 TSA552x_RADIO },
252 { 0x00, 0x00 }, /* band-switch crosspoints */
253 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
254
255 /* PHILIPS_FR1236_SECAM */
256 { "Philips FR1236 SECAM FM", /* the 'name' */
257 TTYPE_SECAM, /* input type */
258 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
259 TSA552x_FCONTROL,
260 TSA552x_FCONTROL,
261 TSA552x_RADIO },
262 { 0x00, 0x00 }, /* band-switch crosspoints */
263 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */
264
265 /* ALPS TSCH5 NTSC */
266 { "ALPS TSCH5 NTSC FM", /* the 'name' */
267 TTYPE_NTSC, /* input type */
268 { TSCH5_FCONTROL, /* control byte for Tuner PLL */
269 TSCH5_FCONTROL,
270 TSCH5_FCONTROL,
271 TSCH5_RADIO },
272 { 0x00, 0x00 }, /* band-switch crosspoints */
273 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */
274
275 /* ALPS TSBH1 NTSC */
276 { "ALPS TSBH1 NTSC", /* the 'name' */
277 TTYPE_NTSC, /* input type */
278 { TSBH1_FCONTROL, /* control byte for Tuner PLL */
279 TSBH1_FCONTROL,
280 TSBH1_FCONTROL,
281 0x00 },
282 { 0x00, 0x00 }, /* band-switch crosspoints */
283 { 0x01, 0x02, 0x08, 0x00 } }, /* the band-switch values */
284
285 /* MT2032 Microtune */
286 { "MT2032", /* the 'name' */
287 TTYPE_PAL, /* input type */
288 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
289 TSA552x_SCONTROL,
290 TSA552x_SCONTROL,
291 0x00 },
292 { 0x00, 0x00 }, /* band-switch crosspoints */
293 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
294
295 /* LG TPI8PSB12P PAL */
296 { "LG TPI8PSB12P PAL", /* the 'name' */
297 TTYPE_PAL, /* input type */
298 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
299 TSA552x_SCONTROL,
300 TSA552x_SCONTROL,
301 0x00 },
302 { 0x00, 0x00 }, /* band-switch crosspoints */
303 { 0xa0, 0x90, 0x30, 0x8e } }, /* the band-switch values */
304
305 /* PHILIPS FI1216 */
306 { "PHILIPS_FI1216", /* the 'name' */
307 TTYPE_PAL, /* input type */
308 { TSBH1_FCONTROL, /* control byte for Tuner PLL */
309 TSBH1_FCONTROL,
310 TSBH1_FCONTROL,
311 0x00 },
312 { 0x00, 0x00 }, /* band-switch crosspoints */
313 { 0x01, 0x02, 0x04, 0x00 } }, /* the band-switch values */
314 };
315
316
317 /* scaling factor for frequencies expressed as ints */
318 #define FREQFACTOR 16
319
320 /*
321 * Format:
322 * entry 0: MAX legal channel
323 * entry 1: IF frequency
324 * expressed as fi{mHz} * 16,
325 * eg 45.75mHz == 45.75 * 16 = 732
326 * entry 2: [place holder/future]
327 * entry 3: base of channel record 0
328 * entry 3 + (x*3): base of channel record 'x'
329 * entry LAST: NULL channel entry marking end of records
330 *
331 * Record:
332 * int 0: base channel
333 * int 1: frequency of base channel,
334 * expressed as fb{mHz} * 16,
335 * int 2: offset frequency between channels,
336 * expressed as fo{mHz} * 16,
337 */
338
339 /*
340 * North American Broadcast Channels:
341 *
342 * 2: 55.25 mHz - 4: 67.25 mHz
343 * 5: 77.25 mHz - 6: 83.25 mHz
344 * 7: 175.25 mHz - 13: 211.25 mHz
345 * 14: 471.25 mHz - 83: 885.25 mHz
346 *
347 * IF freq: 45.75 mHz
348 */
349 #define OFFSET 6.00
350 static int nabcst[] = {
351 83, (int)( 45.75 * FREQFACTOR), 0,
352 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
353 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
354 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
355 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
356 0
357 };
358 #undef OFFSET
359
360 /*
361 * North American Cable Channels, IRC:
362 *
363 * 2: 55.25 mHz - 4: 67.25 mHz
364 * 5: 77.25 mHz - 6: 83.25 mHz
365 * 7: 175.25 mHz - 13: 211.25 mHz
366 * 14: 121.25 mHz - 22: 169.25 mHz
367 * 23: 217.25 mHz - 94: 643.25 mHz
368 * 95: 91.25 mHz - 99: 115.25 mHz
369 *
370 * IF freq: 45.75 mHz
371 */
372 #define OFFSET 6.00
373 static int irccable[] = {
374 116, (int)( 45.75 * FREQFACTOR), 0,
375 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
376 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
377 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
378 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
379 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
380 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
381 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
382 0
383 };
384 #undef OFFSET
385
386 /*
387 * North American Cable Channels, HRC:
388 *
389 * 2: 54 mHz - 4: 66 mHz
390 * 5: 78 mHz - 6: 84 mHz
391 * 7: 174 mHz - 13: 210 mHz
392 * 14: 120 mHz - 22: 168 mHz
393 * 23: 216 mHz - 94: 642 mHz
394 * 95: 90 mHz - 99: 114 mHz
395 *
396 * IF freq: 45.75 mHz
397 */
398 #define OFFSET 6.00
399 static int hrccable[] = {
400 116, (int)( 45.75 * FREQFACTOR), 0,
401 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
402 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
403 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
404 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
405 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
406 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
407 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
408 0
409 };
410 #undef OFFSET
411
412 /*
413 * Western European broadcast channels:
414 *
415 * (there are others that appear to vary between countries - rmt)
416 *
417 * here's the table Philips provides:
418 * caution, some of the offsets don't compute...
419 *
420 * 1 4525 700 N21
421 *
422 * 2 4825 700 E2
423 * 3 5525 700 E3
424 * 4 6225 700 E4
425 *
426 * 5 17525 700 E5
427 * 6 18225 700 E6
428 * 7 18925 700 E7
429 * 8 19625 700 E8
430 * 9 20325 700 E9
431 * 10 21025 700 E10
432 * 11 21725 700 E11
433 * 12 22425 700 E12
434 *
435 * 13 5375 700 ITA
436 * 14 6225 700 ITB
437 *
438 * 15 8225 700 ITC
439 *
440 * 16 17525 700 ITD
441 * 17 18325 700 ITE
442 *
443 * 18 19225 700 ITF
444 * 19 20125 700 ITG
445 * 20 21025 700 ITH
446 *
447 * 21 47125 800 E21
448 * 22 47925 800 E22
449 * 23 48725 800 E23
450 * 24 49525 800 E24
451 * 25 50325 800 E25
452 * 26 51125 800 E26
453 * 27 51925 800 E27
454 * 28 52725 800 E28
455 * 29 53525 800 E29
456 * 30 54325 800 E30
457 * 31 55125 800 E31
458 * 32 55925 800 E32
459 * 33 56725 800 E33
460 * 34 57525 800 E34
461 * 35 58325 800 E35
462 * 36 59125 800 E36
463 * 37 59925 800 E37
464 * 38 60725 800 E38
465 * 39 61525 800 E39
466 * 40 62325 800 E40
467 * 41 63125 800 E41
468 * 42 63925 800 E42
469 * 43 64725 800 E43
470 * 44 65525 800 E44
471 * 45 66325 800 E45
472 * 46 67125 800 E46
473 * 47 67925 800 E47
474 * 48 68725 800 E48
475 * 49 69525 800 E49
476 * 50 70325 800 E50
477 * 51 71125 800 E51
478 * 52 71925 800 E52
479 * 53 72725 800 E53
480 * 54 73525 800 E54
481 * 55 74325 800 E55
482 * 56 75125 800 E56
483 * 57 75925 800 E57
484 * 58 76725 800 E58
485 * 59 77525 800 E59
486 * 60 78325 800 E60
487 * 61 79125 800 E61
488 * 62 79925 800 E62
489 * 63 80725 800 E63
490 * 64 81525 800 E64
491 * 65 82325 800 E65
492 * 66 83125 800 E66
493 * 67 83925 800 E67
494 * 68 84725 800 E68
495 * 69 85525 800 E69
496 *
497 * 70 4575 800 IA
498 * 71 5375 800 IB
499 * 72 6175 800 IC
500 *
501 * 74 6925 700 S01
502 * 75 7625 700 S02
503 * 76 8325 700 S03
504 *
505 * 80 10525 700 S1
506 * 81 11225 700 S2
507 * 82 11925 700 S3
508 * 83 12625 700 S4
509 * 84 13325 700 S5
510 * 85 14025 700 S6
511 * 86 14725 700 S7
512 * 87 15425 700 S8
513 * 88 16125 700 S9
514 * 89 16825 700 S10
515 * 90 23125 700 S11
516 * 91 23825 700 S12
517 * 92 24525 700 S13
518 * 93 25225 700 S14
519 * 94 25925 700 S15
520 * 95 26625 700 S16
521 * 96 27325 700 S17
522 * 97 28025 700 S18
523 * 98 28725 700 S19
524 * 99 29425 700 S20
525 *
526 *
527 * Channels S21 - S41 are taken from
528 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html
529 *
530 * 100 30325 800 S21
531 * 101 31125 800 S22
532 * 102 31925 800 S23
533 * 103 32725 800 S24
534 * 104 33525 800 S25
535 * 105 34325 800 S26
536 * 106 35125 800 S27
537 * 107 35925 800 S28
538 * 108 36725 800 S29
539 * 109 37525 800 S30
540 * 110 38325 800 S31
541 * 111 39125 800 S32
542 * 112 39925 800 S33
543 * 113 40725 800 S34
544 * 114 41525 800 S35
545 * 115 42325 800 S36
546 * 116 43125 800 S37
547 * 117 43925 800 S38
548 * 118 44725 800 S39
549 * 119 45525 800 S40
550 * 120 46325 800 S41
551 *
552 * 121 3890 000 IFFREQ
553 *
554 */
555 static int weurope[] = {
556 121, (int)( 38.90 * FREQFACTOR), 0,
557 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
558 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
559 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
560 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
561 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
562 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
563 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
564 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
565 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
566 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
567 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
568 0
569 };
570
571 /*
572 * Japanese Broadcast Channels:
573 *
574 * 1: 91.25MHz - 3: 103.25MHz
575 * 4: 171.25MHz - 7: 189.25MHz
576 * 8: 193.25MHz - 12: 217.25MHz (VHF)
577 * 13: 471.25MHz - 62: 765.25MHz (UHF)
578 *
579 * IF freq: 58.75 mHz
580 */
581 #define OFFSET 6.00
582 #define IF_FREQ 58.75
583 static int jpnbcst[] = {
584 62, (int)(IF_FREQ * FREQFACTOR), 0,
585 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
586 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
587 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
588 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
589 0
590 };
591 #undef IF_FREQ
592 #undef OFFSET
593
594 /*
595 * Japanese Cable Channels:
596 *
597 * 1: 91.25MHz - 3: 103.25MHz
598 * 4: 171.25MHz - 7: 189.25MHz
599 * 8: 193.25MHz - 12: 217.25MHz
600 * 13: 109.25MHz - 21: 157.25MHz
601 * 22: 165.25MHz
602 * 23: 223.25MHz - 63: 463.25MHz
603 *
604 * IF freq: 58.75 mHz
605 */
606 #define OFFSET 6.00
607 #define IF_FREQ 58.75
608 static int jpncable[] = {
609 63, (int)(IF_FREQ * FREQFACTOR), 0,
610 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
611 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
612 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
613 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
614 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
615 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
616 0
617 };
618 #undef IF_FREQ
619 #undef OFFSET
620
621 /*
622 * xUSSR Broadcast Channels:
623 *
624 * 1: 49.75MHz - 2: 59.25MHz
625 * 3: 77.25MHz - 5: 93.25MHz
626 * 6: 175.25MHz - 12: 223.25MHz
627 * 13-20 - not exist
628 * 21: 471.25MHz - 34: 575.25MHz
629 * 35: 583.25MHz - 69: 855.25MHz
630 *
631 * Cable channels
632 *
633 * 70: 111.25MHz - 77: 167.25MHz
634 * 78: 231.25MHz -107: 463.25MHz
635 *
636 * IF freq: 38.90 MHz
637 */
638 #define IF_FREQ 38.90
639 static int xussr[] = {
640 107, (int)(IF_FREQ * FREQFACTOR), 0,
641 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
642 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
643 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
644 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
645 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
646 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
647 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR),
648 0
649 };
650 #undef IF_FREQ
651
652 /*
653 * Australian broadcast channels
654 */
655 #define OFFSET 7.00
656 #define IF_FREQ 38.90
657 static int australia[] = {
658 83, (int)(IF_FREQ * FREQFACTOR), 0,
659 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
660 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
661 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
662 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
663 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
664 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
665 0
666 };
667 #undef OFFSET
668 #undef IF_FREQ
669
670 /*
671 * France broadcast channels
672 */
673 #define OFFSET 8.00
674 #define IF_FREQ 38.90
675 static int france[] = {
676 69, (int)(IF_FREQ * FREQFACTOR), 0,
677 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */
678 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */
679 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */
680 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */
681 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */
682 0
683 };
684 #undef OFFSET
685 #undef IF_FREQ
686
687 static struct {
688 int *ptr;
689 char name[BT848_MAX_CHNLSET_NAME_LEN];
690 } freqTable[] = {
691 {NULL, ""},
692 {nabcst, "nabcst"},
693 {irccable, "cableirc"},
694 {hrccable, "cablehrc"},
695 {weurope, "weurope"},
696 {jpnbcst, "jpnbcst"},
697 {jpncable, "jpncable"},
698 {xussr, "xussr"},
699 {australia, "australia"},
700 {france, "france"},
701
702 };
703
704 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ]
705 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ]
706 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ]
707 static int
frequency_lookup(bktr_ptr_t bktr,int channel)708 frequency_lookup( bktr_ptr_t bktr, int channel )
709 {
710 int x;
711
712 /* check for "> MAX channel" */
713 x = 0;
714 if ( channel > TBL_CHNL )
715 return( -1 );
716
717 /* search the table for data */
718 for ( x = 3; TBL_CHNL; x += 3 ) {
719 if ( channel >= TBL_CHNL ) {
720 return( TBL_BASE_FREQ +
721 ((channel - TBL_CHNL) * TBL_OFFSET) );
722 }
723 }
724
725 /* not found, must be below the MIN channel */
726 return( -1 );
727 }
728 #undef TBL_OFFSET
729 #undef TBL_BASE_FREQ
730 #undef TBL_CHNL
731
732
733 #define TBL_IF (bktr->format_params == BT848_IFORM_F_NTSCJ || \
734 bktr->format_params == BT848_IFORM_F_NTSCM ? \
735 nabcst[1] : weurope[1])
736
737
738 /* Initialise the tuner structures in the bktr_softc */
739 /* This is needed as the tuner details are no longer globally declared */
740
select_tuner(bktr_ptr_t bktr,int tuner_type)741 void select_tuner( bktr_ptr_t bktr, int tuner_type ) {
742 if (tuner_type < Bt848_MAX_TUNER) {
743 bktr->card.tuner = &tuners[ tuner_type ];
744 } else {
745 bktr->card.tuner = NULL;
746 }
747 }
748
749 /*
750 * Tuner Notes:
751 * Programming the tuner properly is quite complicated.
752 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner.
753 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of
754 * 87.5 Mhz to 108.0 Mhz.
755 *
756 * RF and IF. RF = radio frequencies, it is the transmitted signal.
757 * IF is the Intermediate Frequency (the offset from the base
758 * signal where the video, color, audio and NICAM signals are.
759 *
760 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz
761 * NICAM at 32.348 Mhz.
762 * Strangely enough, there is an IF (intermediate frequency) for
763 * FM Radio which is 10.7 Mhz.
764 *
765 * The tuner also works in Bands. Philips bands are
766 * FM radio band 87.50 to 108.00 MHz
767 * Low band 45.75 to 170.00 MHz
768 * Mid band 170.00 to 450.00 MHz
769 * High band 450.00 to 855.25 MHz
770 *
771 *
772 * Now we need to set the PLL on the tuner to the required freuqncy.
773 * It has a programmable divisor.
774 * For TV we want
775 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF
776 * are in MHz.
777
778 * For RADIO we want a different equation.
779 * freq IF is 10.70 MHz (so the data sheet tells me)
780 * N = (freq RF + freq IF) / step size
781 * The step size must be set to 50 khz (so the data sheet tells me)
782 * (note this is 50 kHz, the other things are in MHz)
783 * so we end up with N = 20x(freq RF + 10.7)
784 *
785 */
786
787 #define LOW_BAND 0
788 #define MID_BAND 1
789 #define HIGH_BAND 2
790 #define FM_RADIO_BAND 3
791
792
793 /* Check if these are correct for other than Philips PAL */
794 #define STATUSBIT_COLD 0x80
795 #define STATUSBIT_LOCK 0x40
796 #define STATUSBIT_TV 0x20
797 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */
798 #define STATUSBIT_ADC 0x07
799
800 /*
801 * set the frequency of the tuner
802 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16
803 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100
804 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625)
805 *
806 */
807 int
tv_freq(bktr_ptr_t bktr,int frequency,int type)808 tv_freq( bktr_ptr_t bktr, int frequency, int type )
809 {
810 const struct TUNER* tuner;
811 u_char addr;
812 u_char control;
813 u_char band;
814 int N;
815 int band_select = 0;
816 #if defined( TEST_TUNER_AFC )
817 int oldFrequency, afcDelta;
818 #endif
819
820 tuner = bktr->card.tuner;
821 if ( tuner == NULL )
822 return( -1 );
823
824 if (tuner == &tuners[TUNER_MT2032]) {
825 mt2032_set_tv_freq(bktr, frequency);
826 return 0;
827 }
828 if (type == TV_FREQUENCY) {
829 /*
830 * select the band based on frequency
831 * XXX FIXME: get the cross-over points from the tuner struct
832 */
833 if ( frequency < (160 * FREQFACTOR ) )
834 band_select = LOW_BAND;
835 else if ( frequency < (454 * FREQFACTOR ) )
836 band_select = MID_BAND;
837 else
838 band_select = HIGH_BAND;
839
840 #if defined( TEST_TUNER_AFC )
841 if ( bktr->tuner.afc )
842 frequency -= 4;
843 #endif
844 /*
845 * N = 16 * { fRF(pc) + fIF(pc) }
846 * or N = 16* fRF(pc) + 16*fIF(pc) }
847 * where:
848 * pc is picture carrier, fRF & fIF are in MHz
849 *
850 * fortunatly, frequency is passed in as MHz * 16
851 * and the TBL_IF frequency is also stored in MHz * 16
852 */
853 N = frequency + TBL_IF;
854
855 /* set the address of the PLL */
856 addr = bktr->card.tuner_pllAddr;
857 control = tuner->pllControl[ band_select ];
858 band = tuner->bandAddrs[ band_select ];
859
860 if(!(band && control)) /* Don't try to set un- */
861 return(-1); /* supported modes. */
862
863 if ( frequency > bktr->tuner.frequency ) {
864 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
865 i2cWrite( bktr, addr, control, band );
866 }
867 else {
868 i2cWrite( bktr, addr, control, band );
869 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
870 }
871
872 #if defined( TUNER_AFC )
873 if ( bktr->tuner.afc == TRUE ) {
874 #if defined( TEST_TUNER_AFC )
875 oldFrequency = frequency;
876 #endif
877 if ( (N = do_afc( bktr, addr, N )) < 0 ) {
878 /* AFC failed, restore requested frequency */
879 N = frequency + TBL_IF;
880 #if defined( TEST_TUNER_AFC )
881 printf("%s: do_afc: failed to lock\n",
882 bktr_name(bktr));
883 #endif
884 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
885 }
886 else
887 frequency = N - TBL_IF;
888 #if defined( TEST_TUNER_AFC )
889 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16);
890 afcDelta = frequency - oldFrequency;
891 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16);
892 #endif
893 }
894 #endif /* TUNER_AFC */
895
896 bktr->tuner.frequency = frequency;
897 }
898
899 if ( type == FM_RADIO_FREQUENCY ) {
900 band_select = FM_RADIO_BAND;
901
902 /*
903 * N = { fRF(pc) + fIF(pc) }/step_size
904 * The step size is 50kHz for FM radio.
905 * (eg after 102.35MHz comes 102.40 MHz)
906 * fIF is 10.7 MHz (as detailed in the specs)
907 *
908 * frequency is passed in as MHz * 100
909 *
910 * So, we have N = (frequency/100 + 10.70) /(50/1000)
911 */
912 N = (frequency + 1070)/5;
913
914 /* set the address of the PLL */
915 addr = bktr->card.tuner_pllAddr;
916 control = tuner->pllControl[ band_select ];
917 band = tuner->bandAddrs[ band_select ];
918
919 if(!(band && control)) /* Don't try to set un- */
920 return(-1); /* supported modes. */
921
922 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in
923 * the ioctls RADIO_SETMODE
924 * and RADIO_GETMODE */
925
926 i2cWrite( bktr, addr, control, band );
927 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
928
929 bktr->tuner.frequency = (N * 5) - 1070;
930
931
932 }
933
934
935 return( 0 );
936 }
937
938
939
940 #if defined( TUNER_AFC )
941 /*
942 *
943 */
944 int
do_afc(bktr_ptr_t bktr,int addr,int frequency)945 do_afc( bktr_ptr_t bktr, int addr, int frequency )
946 {
947 int step;
948 int status;
949 int origFrequency;
950
951 origFrequency = frequency;
952
953 /* wait for first setting to take effect */
954 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 );
955
956 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
957 return( -1 );
958
959 #if defined( TEST_TUNER_AFC )
960 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
961 #endif
962 for ( step = 0; step < AFC_MAX_STEP; ++step ) {
963 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
964 goto fubar;
965 if ( !(status & 0x40) ) {
966 #if defined( TEST_TUNER_AFC )
967 printf( "%s: no lock!\n", bktr_name(bktr) );
968 #endif
969 goto fubar;
970 }
971
972 switch( status & AFC_BITS ) {
973 case AFC_FREQ_CENTERED:
974 #if defined( TEST_TUNER_AFC )
975 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
976 #endif
977 return( frequency );
978
979 case AFC_FREQ_MINUS_125:
980 case AFC_FREQ_MINUS_62:
981 #if defined( TEST_TUNER_AFC )
982 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
983 #endif
984 --frequency;
985 break;
986
987 case AFC_FREQ_PLUS_62:
988 case AFC_FREQ_PLUS_125:
989 #if defined( TEST_TUNER_AFC )
990 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
991 #endif
992 ++frequency;
993 break;
994 }
995
996 i2cWrite( bktr, addr,
997 (frequency>>8) & 0x7f, frequency & 0xff );
998 DELAY( AFC_DELAY );
999 }
1000
1001 fubar:
1002 i2cWrite( bktr, addr,
1003 (origFrequency>>8) & 0x7f, origFrequency & 0xff );
1004
1005 return( -1 );
1006 }
1007 #endif /* TUNER_AFC */
1008 #undef TBL_IF
1009
1010
1011 /*
1012 * Get the Tuner status and signal strength
1013 */
get_tuner_status(bktr_ptr_t bktr)1014 int get_tuner_status( bktr_ptr_t bktr ) {
1015 if (bktr->card.tuner == &tuners[TUNER_MT2032])
1016 return 0;
1017 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 );
1018 }
1019
1020 /*
1021 * set the channel of the tuner
1022 */
1023 int
tv_channel(bktr_ptr_t bktr,int channel)1024 tv_channel( bktr_ptr_t bktr, int channel )
1025 {
1026 int frequency;
1027
1028 /* calculate the frequency according to tuner type */
1029 if ( (frequency = frequency_lookup( bktr, channel )) < 0 )
1030 return( -1 );
1031
1032 /* set the new frequency */
1033 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 )
1034 return( -1 );
1035
1036 /* OK to update records */
1037 return( (bktr->tuner.channel = channel) );
1038 }
1039
1040 /*
1041 * get channelset name
1042 */
1043 int
tuner_getchnlset(struct bktr_chnlset * chnlset)1044 tuner_getchnlset(struct bktr_chnlset *chnlset)
1045 {
1046 if (( chnlset->index < CHNLSET_MIN ) ||
1047 ( chnlset->index > CHNLSET_MAX ))
1048 return( EINVAL );
1049
1050 memcpy(&chnlset->name, &freqTable[chnlset->index].name,
1051 BT848_MAX_CHNLSET_NAME_LEN);
1052
1053 chnlset->max_channel=freqTable[chnlset->index].ptr[0];
1054 return( 0 );
1055 }
1056
1057
1058
1059
1060 #define TDA9887_ADDR 0x86
1061
1062 static int
TDA9887_init(bktr_ptr_t bktr,int output2_enable)1063 TDA9887_init(bktr_ptr_t bktr, int output2_enable)
1064 {
1065 u_char addr = TDA9887_ADDR;
1066
1067 i2cWrite(bktr, addr, 0, output2_enable ? 0x50 : 0xd0);
1068 i2cWrite(bktr, addr, 1, 0x6e); /* takeover point / de-emphasis */
1069
1070 /* PAL BG: 0x09 PAL I: 0x0a NTSC: 0x04 */
1071 #ifdef MT2032_NTSC
1072 i2cWrite(bktr, addr, 2, 0x04);
1073 #else
1074 i2cWrite(bktr, addr, 2, 0x09);
1075 #endif
1076 return 0;
1077 }
1078
1079
1080
1081 #define MT2032_OPTIMIZE_VCO 1
1082
1083 /* holds the value of XOGC register after init */
1084 static int MT2032_XOGC = 4;
1085
1086 /* card.tuner_pllAddr not set during init */
1087 #define MT2032_ADDR 0xc0
1088
1089 #ifndef MT2032_ADDR
1090 #define MT2032_ADDR (bktr->card.tuner_pllAddr)
1091 #endif
1092
1093 static int
_MT2032_GetRegister(bktr_ptr_t bktr,u_char regNum)1094 _MT2032_GetRegister(bktr_ptr_t bktr, u_char regNum)
1095 {
1096 int ch;
1097
1098 if (i2cWrite(bktr, MT2032_ADDR, regNum, -1) == -1) {
1099 if (bootverbose)
1100 printf("%s: MT2032 write failed (i2c addr %#x)\n",
1101 bktr_name(bktr), MT2032_ADDR);
1102 return -1;
1103 }
1104 if ((ch = i2cRead(bktr, MT2032_ADDR + 1)) == -1) {
1105 if (bootverbose)
1106 printf("%s: MT2032 get register %d failed\n",
1107 bktr_name(bktr), regNum);
1108 return -1;
1109 }
1110 return ch;
1111 }
1112
1113 static void
_MT2032_SetRegister(bktr_ptr_t bktr,u_char regNum,u_char data)1114 _MT2032_SetRegister(bktr_ptr_t bktr, u_char regNum, u_char data)
1115 {
1116 i2cWrite(bktr, MT2032_ADDR, regNum, data);
1117 }
1118
1119 #define MT2032_GetRegister(r) _MT2032_GetRegister(bktr,r)
1120 #define MT2032_SetRegister(r,d) _MT2032_SetRegister(bktr,r,d)
1121
1122
1123 int
mt2032_init(bktr_ptr_t bktr)1124 mt2032_init(bktr_ptr_t bktr)
1125 {
1126 u_char rdbuf[22];
1127 int xogc, xok = 0;
1128 int i;
1129 int x;
1130
1131 TDA9887_init(bktr, 0);
1132
1133 for (i = 0; i < 21; i++) {
1134 if ((x = MT2032_GetRegister(i)) == -1)
1135 break;
1136 rdbuf[i] = x;
1137 }
1138 if (i < 21)
1139 return -1;
1140
1141 printf("%s: MT2032: Companycode=%02x%02x Part=%02x Revision=%02x\n",
1142 bktr_name(bktr),
1143 rdbuf[0x11], rdbuf[0x12], rdbuf[0x13], rdbuf[0x14]);
1144 if (rdbuf[0x13] != 4) {
1145 printf("%s: MT2032 not found or unknown type\n", bktr_name(bktr));
1146 return -1;
1147 }
1148
1149 /* Initialize Registers per spec. */
1150 MT2032_SetRegister(2, 0xff);
1151 MT2032_SetRegister(3, 0x0f);
1152 MT2032_SetRegister(4, 0x1f);
1153 MT2032_SetRegister(6, 0xe4);
1154 MT2032_SetRegister(7, 0x8f);
1155 MT2032_SetRegister(8, 0xc3);
1156 MT2032_SetRegister(9, 0x4e);
1157 MT2032_SetRegister(10, 0xec);
1158 MT2032_SetRegister(13, 0x32);
1159
1160 /* Adjust XOGC (register 7), wait for XOK */
1161 xogc = 7;
1162 do {
1163 DELAY(10000);
1164 xok = MT2032_GetRegister(0x0e) & 0x01;
1165 if (xok == 1) {
1166 break;
1167 }
1168 xogc--;
1169 if (xogc == 3) {
1170 xogc = 4; /* min. 4 per spec */
1171 break;
1172 }
1173 MT2032_SetRegister(7, 0x88 + xogc);
1174 } while (xok != 1);
1175
1176 TDA9887_init(bktr, 1);
1177
1178 MT2032_XOGC = xogc;
1179
1180 return 0;
1181 }
1182
1183 static int
MT2032_SpurCheck(int f1,int f2,int spectrum_from,int spectrum_to)1184 MT2032_SpurCheck(int f1, int f2, int spectrum_from, int spectrum_to)
1185 {
1186 int n1 = 1, n2, f;
1187
1188 f1 = f1 / 1000; /* scale to kHz to avoid 32bit overflows */
1189 f2 = f2 / 1000;
1190 spectrum_from /= 1000;
1191 spectrum_to /= 1000;
1192
1193 do {
1194 n2 = -n1;
1195 f = n1 * (f1 - f2);
1196 do {
1197 n2--;
1198 f = f - f2;
1199 if ((f > spectrum_from) && (f < spectrum_to)) {
1200 return 1;
1201 }
1202 } while ((f > (f2 - spectrum_to)) || (n2 > -5));
1203 n1++;
1204 } while (n1 < 5);
1205
1206 return 0;
1207 }
1208
1209 static int
MT2032_ComputeFreq(int rfin,int if1,int if2,int spectrum_from,int spectrum_to,unsigned char * buf,int * ret_sel,int xogc)1210 MT2032_ComputeFreq(
1211 int rfin,
1212 int if1,
1213 int if2,
1214 int spectrum_from,
1215 int spectrum_to,
1216 unsigned char *buf,
1217 int *ret_sel,
1218 int xogc
1219 )
1220 { /* all in Hz */
1221 int fref, lo1, lo1n, lo1a, s, sel;
1222 int lo1freq, desired_lo1, desired_lo2, lo2, lo2n, lo2a,
1223 lo2num, lo2freq;
1224 int nLO1adjust;
1225
1226 fref = 5250 * 1000; /* 5.25MHz */
1227
1228 /* per spec 2.3.1 */
1229 desired_lo1 = rfin + if1;
1230 lo1 = (2 * (desired_lo1 / 1000) + (fref / 1000)) / (2 * fref / 1000);
1231 lo1freq = lo1 * fref;
1232 desired_lo2 = lo1freq - rfin - if2;
1233
1234 /* per spec 2.3.2 */
1235 for (nLO1adjust = 1; nLO1adjust < 3; nLO1adjust++) {
1236 if (!MT2032_SpurCheck(lo1freq, desired_lo2, spectrum_from, spectrum_to)) {
1237 break;
1238 }
1239 if (lo1freq < desired_lo1) {
1240 lo1 += nLO1adjust;
1241 } else {
1242 lo1 -= nLO1adjust;
1243 }
1244
1245 lo1freq = lo1 * fref;
1246 desired_lo2 = lo1freq - rfin - if2;
1247 }
1248
1249 /* per spec 2.3.3 */
1250 s = lo1freq / 1000 / 1000;
1251
1252 if (MT2032_OPTIMIZE_VCO) {
1253 if (s > 1890) {
1254 sel = 0;
1255 } else if (s > 1720) {
1256 sel = 1;
1257 } else if (s > 1530) {
1258 sel = 2;
1259 } else if (s > 1370) {
1260 sel = 3;
1261 } else {
1262 sel = 4;/* >1090 */
1263 }
1264 } else {
1265 if (s > 1790) {
1266 sel = 0;/* <1958 */
1267 } else if (s > 1617) {
1268 sel = 1;
1269 } else if (s > 1449) {
1270 sel = 2;
1271 } else if (s > 1291) {
1272 sel = 3;
1273 } else {
1274 sel = 4;/* >1090 */
1275 }
1276 }
1277
1278 *ret_sel = sel;
1279
1280 /* per spec 2.3.4 */
1281 lo1n = lo1 / 8;
1282 lo1a = lo1 - (lo1n * 8);
1283 lo2 = desired_lo2 / fref;
1284 lo2n = lo2 / 8;
1285 lo2a = lo2 - (lo2n * 8);
1286 /* scale to fit in 32bit arith */
1287 lo2num = ((desired_lo2 / 1000) % (fref / 1000)) * 3780 / (fref / 1000);
1288 lo2freq = (lo2a + 8 * lo2n) * fref + lo2num * (fref / 1000) / 3780 * 1000;
1289
1290 if (lo1a < 0 || lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a < 0 ||
1291 lo2a > 7 || lo2n < 17 || lo2n > 30) {
1292 printf("MT2032: parameter out of range\n");
1293 return -1;
1294 }
1295 /* set up MT2032 register map for transfer over i2c */
1296 buf[0] = lo1n - 1;
1297 buf[1] = lo1a | (sel << 4);
1298 buf[2] = 0x86; /* LOGC */
1299 buf[3] = 0x0f; /* reserved */
1300 buf[4] = 0x1f;
1301 buf[5] = (lo2n - 1) | (lo2a << 5);
1302 if (rfin < 400 * 1000 * 1000) {
1303 buf[6] = 0xe4;
1304 } else {
1305 buf[6] = 0xf4; /* set PKEN per rev 1.2 */
1306 }
1307
1308 buf[7] = 8 + xogc;
1309 buf[8] = 0xc3; /* reserved */
1310 buf[9] = 0x4e; /* reserved */
1311 buf[10] = 0xec; /* reserved */
1312 buf[11] = (lo2num & 0xff);
1313 buf[12] = (lo2num >> 8) | 0x80; /* Lo2RST */
1314
1315 return 0;
1316 }
1317
1318 static int
MT2032_CheckLOLock(bktr_ptr_t bktr)1319 MT2032_CheckLOLock(bktr_ptr_t bktr)
1320 {
1321 int t, lock = 0;
1322 for (t = 0; t < 10; t++) {
1323 lock = MT2032_GetRegister(0x0e) & 0x06;
1324 if (lock == 6) {
1325 break;
1326 }
1327 DELAY(1000);
1328 }
1329 return lock;
1330 }
1331
1332 static int
MT2032_OptimizeVCO(bktr_ptr_t bktr,int sel,int lock)1333 MT2032_OptimizeVCO(bktr_ptr_t bktr, int sel, int lock)
1334 {
1335 int tad1, lo1a;
1336
1337 tad1 = MT2032_GetRegister(0x0f) & 0x07;
1338
1339 if (tad1 == 0) {
1340 return lock;
1341 }
1342 if (tad1 == 1) {
1343 return lock;
1344 }
1345 if (tad1 == 2) {
1346 if (sel == 0) {
1347 return lock;
1348 } else {
1349 sel--;
1350 }
1351 } else {
1352 if (sel < 4) {
1353 sel++;
1354 } else {
1355 return lock;
1356 }
1357 }
1358 lo1a = MT2032_GetRegister(0x01) & 0x07;
1359 MT2032_SetRegister(0x01, lo1a | (sel << 4));
1360 lock = MT2032_CheckLOLock(bktr);
1361 return lock;
1362 }
1363
1364 static int
MT2032_SetIFFreq(bktr_ptr_t bktr,int rfin,int if1,int if2,int from,int to)1365 MT2032_SetIFFreq(bktr_ptr_t bktr, int rfin, int if1, int if2, int from, int to)
1366 {
1367 u_char buf[21];
1368 int lint_try, sel, lock = 0;
1369
1370 if (MT2032_ComputeFreq(rfin, if1, if2, from, to, &buf[0], &sel, MT2032_XOGC) == -1)
1371 return -1;
1372
1373 TDA9887_init(bktr, 0);
1374
1375 /* send only the relevant registers per Rev. 1.2 */
1376 MT2032_SetRegister(0, buf[0x00]);
1377 MT2032_SetRegister(1, buf[0x01]);
1378 MT2032_SetRegister(2, buf[0x02]);
1379
1380 MT2032_SetRegister(5, buf[0x05]);
1381 MT2032_SetRegister(6, buf[0x06]);
1382 MT2032_SetRegister(7, buf[0x07]);
1383
1384 MT2032_SetRegister(11, buf[0x0B]);
1385 MT2032_SetRegister(12, buf[0x0C]);
1386
1387 /* wait for PLLs to lock (per manual), retry LINT if not. */
1388 for (lint_try = 0; lint_try < 2; lint_try++) {
1389 lock = MT2032_CheckLOLock(bktr);
1390
1391 if (MT2032_OPTIMIZE_VCO) {
1392 lock = MT2032_OptimizeVCO(bktr, sel, lock);
1393 }
1394 if (lock == 6) {
1395 break;
1396 }
1397 /* set LINT to re-init PLLs */
1398 MT2032_SetRegister(7, 0x80 + 8 + MT2032_XOGC);
1399 DELAY(10000);
1400 MT2032_SetRegister(7, 8 + MT2032_XOGC);
1401 }
1402 if (lock != 6)
1403 printf("%s: PLL didn't lock\n", bktr_name(bktr));
1404
1405 MT2032_SetRegister(2, 0x20);
1406
1407 TDA9887_init(bktr, 1);
1408 return 0;
1409 }
1410
1411 static void
mt2032_set_tv_freq(bktr_ptr_t bktr,unsigned int freq)1412 mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq)
1413 {
1414 int if2,from,to;
1415 int stat, tad;
1416
1417 #ifdef MT2032_NTSC
1418 from=40750*1000;
1419 to=46750*1000;
1420 if2=45750*1000;
1421 #else
1422 from=32900*1000;
1423 to=39900*1000;
1424 if2=38900*1000;
1425 #endif
1426
1427 if (MT2032_SetIFFreq(bktr, freq*62500 /* freq*1000*1000/16 */,
1428 1090*1000*1000, if2, from, to) == 0) {
1429 bktr->tuner.frequency = freq;
1430 stat = MT2032_GetRegister(0x0e);
1431 tad = MT2032_GetRegister(0x0f);
1432 if (bootverbose)
1433 printf("%s: frequency set to %d, st = %#x, tad = %#x\n",
1434 bktr_name(bktr), freq*62500, stat, tad);
1435 }
1436 }
1437