1 /*-
2 * 1. Redistributions of source code must retain the
3 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Amancio Hasty and
17 * Roger Hardiman
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36
37 /*
38 * This is part of the Driver for Video Capture Cards (Frame grabbers)
39 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
40 * chipset.
41 * Copyright Roger Hardiman and Amancio Hasty.
42 *
43 * bktr_tuner : This deals with controlling the tuner fitted to TV cards.
44 */
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/kernel.h>
49 #ifdef __NetBSD__
50 #include <sys/proc.h>
51 #endif
52
53 #ifdef __FreeBSD__
54 #if (__FreeBSD_version < 500000)
55 #include <machine/clock.h> /* for DELAY */
56 #include <pci/pcivar.h>
57 #else
58 #include <sys/lock.h>
59 #include <sys/mutex.h>
60 #include <sys/selinfo.h>
61 #include <dev/pci/pcivar.h>
62 #endif
63
64 #include <machine/bus.h>
65 #include <sys/bus.h>
66 #endif
67
68 #ifdef __NetBSD__
69 #include <dev/ic/bt8xx.h> /* NetBSD .h file location */
70 #include <dev/pci/bktr/bktr_reg.h>
71 #include <dev/pci/bktr/bktr_tuner.h>
72 #include <dev/pci/bktr/bktr_card.h>
73 #include <dev/pci/bktr/bktr_core.h>
74 #else
75 #include <dev/bktr/ioctl_meteor.h>
76 #include <dev/bktr/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
77 #include <dev/bktr/bktr_reg.h>
78 #include <dev/bktr/bktr_tuner.h>
79 #include <dev/bktr/bktr_card.h>
80 #include <dev/bktr/bktr_core.h>
81 #endif
82
83
84
85 #if defined( TUNER_AFC )
86 #define AFC_DELAY 10000 /* 10 millisend delay */
87 #define AFC_BITS 0x07
88 #define AFC_FREQ_MINUS_125 0x00
89 #define AFC_FREQ_MINUS_62 0x01
90 #define AFC_FREQ_CENTERED 0x02
91 #define AFC_FREQ_PLUS_62 0x03
92 #define AFC_FREQ_PLUS_125 0x04
93 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */
94 #endif /* TUNER_AFC */
95
96
97 #define TTYPE_XXX 0
98 #define TTYPE_NTSC 1
99 #define TTYPE_NTSC_J 2
100 #define TTYPE_PAL 3
101 #define TTYPE_PAL_M 4
102 #define TTYPE_PAL_N 5
103 #define TTYPE_SECAM 6
104
105 #define TSA552x_CB_MSB (0x80)
106 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */
107 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */
108 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */
109 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */
110 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */
111 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/
112 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */
113
114 #define TSA552x_RADIO (TSA552x_CB_MSB | \
115 TSA552x_CB_T0)
116
117 /* raise the charge pump voltage for fast tuning */
118 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \
119 TSA552x_CB_CP | \
120 TSA552x_CB_T0 | \
121 TSA552x_CB_RSA | \
122 TSA552x_CB_RSB)
123
124 /* lower the charge pump voltage for better residual oscillator FM */
125 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \
126 TSA552x_CB_T0 | \
127 TSA552x_CB_RSA | \
128 TSA552x_CB_RSB)
129
130 /* The control value for the ALPS TSCH5 Tuner */
131 #define TSCH5_FCONTROL 0x82
132 #define TSCH5_RADIO 0x86
133
134 /* The control value for the ALPS TSBH1 Tuner */
135 #define TSBH1_FCONTROL 0xce
136
137
138 static void mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq);
139
140
141 static const struct TUNER tuners[] = {
142 /* XXX FIXME: fill in the band-switch crosspoints */
143 /* NO_TUNER */
144 { "<no>", /* the 'name' */
145 TTYPE_XXX, /* input type */
146 { 0x00, /* control byte for Tuner PLL */
147 0x00,
148 0x00,
149 0x00 },
150 { 0x00, 0x00 }, /* band-switch crosspoints */
151 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
152
153 /* TEMIC_NTSC */
154 { "Temic NTSC", /* the 'name' */
155 TTYPE_NTSC, /* input type */
156 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
157 TSA552x_SCONTROL,
158 TSA552x_SCONTROL,
159 0x00 },
160 { 0x00, 0x00}, /* band-switch crosspoints */
161 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
162
163 /* TEMIC_PAL */
164 { "Temic PAL", /* the 'name' */
165 TTYPE_PAL, /* input type */
166 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
167 TSA552x_SCONTROL,
168 TSA552x_SCONTROL,
169 0x00 },
170 { 0x00, 0x00 }, /* band-switch crosspoints */
171 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
172
173 /* TEMIC_SECAM */
174 { "Temic SECAM", /* the 'name' */
175 TTYPE_SECAM, /* input type */
176 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
177 TSA552x_SCONTROL,
178 TSA552x_SCONTROL,
179 0x00 },
180 { 0x00, 0x00 }, /* band-switch crosspoints */
181 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
182
183 /* PHILIPS_NTSC */
184 { "Philips NTSC", /* the 'name' */
185 TTYPE_NTSC, /* input type */
186 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
187 TSA552x_SCONTROL,
188 TSA552x_SCONTROL,
189 0x00 },
190 { 0x00, 0x00 }, /* band-switch crosspoints */
191 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
192
193 /* PHILIPS_PAL */
194 { "Philips PAL", /* the 'name' */
195 TTYPE_PAL, /* input type */
196 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
197 TSA552x_SCONTROL,
198 TSA552x_SCONTROL,
199 0x00 },
200 { 0x00, 0x00 }, /* band-switch crosspoints */
201 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
202
203 /* PHILIPS_SECAM */
204 { "Philips SECAM", /* the 'name' */
205 TTYPE_SECAM, /* input type */
206 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
207 TSA552x_SCONTROL,
208 TSA552x_SCONTROL,
209 0x00 },
210 { 0x00, 0x00 }, /* band-switch crosspoints */
211 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */
212
213 /* TEMIC_PAL I */
214 { "Temic PAL I", /* the 'name' */
215 TTYPE_PAL, /* input type */
216 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
217 TSA552x_SCONTROL,
218 TSA552x_SCONTROL,
219 0x00 },
220 { 0x00, 0x00 }, /* band-switch crosspoints */
221 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
222
223 /* PHILIPS_PALI */
224 { "Philips PAL I", /* the 'name' */
225 TTYPE_PAL, /* input type */
226 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
227 TSA552x_SCONTROL,
228 TSA552x_SCONTROL,
229 0x00 },
230 { 0x00, 0x00 }, /* band-switch crosspoints */
231 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
232
233 /* PHILIPS_FR1236_NTSC */
234 { "Philips FR1236 NTSC FM", /* the 'name' */
235 TTYPE_NTSC, /* input type */
236 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
237 TSA552x_FCONTROL,
238 TSA552x_FCONTROL,
239 TSA552x_RADIO },
240 { 0x00, 0x00 }, /* band-switch crosspoints */
241 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
242
243 /* PHILIPS_FR1216_PAL */
244 { "Philips FR1216 PAL FM" , /* the 'name' */
245 TTYPE_PAL, /* input type */
246 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
247 TSA552x_FCONTROL,
248 TSA552x_FCONTROL,
249 TSA552x_RADIO },
250 { 0x00, 0x00 }, /* band-switch crosspoints */
251 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
252
253 /* PHILIPS_FR1236_SECAM */
254 { "Philips FR1236 SECAM FM", /* the 'name' */
255 TTYPE_SECAM, /* input type */
256 { TSA552x_FCONTROL, /* control byte for Tuner PLL */
257 TSA552x_FCONTROL,
258 TSA552x_FCONTROL,
259 TSA552x_RADIO },
260 { 0x00, 0x00 }, /* band-switch crosspoints */
261 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */
262
263 /* ALPS TSCH5 NTSC */
264 { "ALPS TSCH5 NTSC FM", /* the 'name' */
265 TTYPE_NTSC, /* input type */
266 { TSCH5_FCONTROL, /* control byte for Tuner PLL */
267 TSCH5_FCONTROL,
268 TSCH5_FCONTROL,
269 TSCH5_RADIO },
270 { 0x00, 0x00 }, /* band-switch crosspoints */
271 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */
272
273 /* ALPS TSBH1 NTSC */
274 { "ALPS TSBH1 NTSC", /* the 'name' */
275 TTYPE_NTSC, /* input type */
276 { TSBH1_FCONTROL, /* control byte for Tuner PLL */
277 TSBH1_FCONTROL,
278 TSBH1_FCONTROL,
279 0x00 },
280 { 0x00, 0x00 }, /* band-switch crosspoints */
281 { 0x01, 0x02, 0x08, 0x00 } }, /* the band-switch values */
282
283 /* MT2032 Microtune */
284 { "MT2032", /* the 'name' */
285 TTYPE_PAL, /* input type */
286 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
287 TSA552x_SCONTROL,
288 TSA552x_SCONTROL,
289 0x00 },
290 { 0x00, 0x00 }, /* band-switch crosspoints */
291 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
292
293 /* LG TPI8PSB12P PAL */
294 { "LG TPI8PSB12P PAL", /* the 'name' */
295 TTYPE_PAL, /* input type */
296 { TSA552x_SCONTROL, /* control byte for Tuner PLL */
297 TSA552x_SCONTROL,
298 TSA552x_SCONTROL,
299 0x00 },
300 { 0x00, 0x00 }, /* band-switch crosspoints */
301 { 0xa0, 0x90, 0x30, 0x8e } }, /* the band-switch values */
302 };
303
304
305 /* scaling factor for frequencies expressed as ints */
306 #define FREQFACTOR 16
307
308 /*
309 * Format:
310 * entry 0: MAX legal channel
311 * entry 1: IF frequency
312 * expressed as fi{mHz} * 16,
313 * eg 45.75mHz == 45.75 * 16 = 732
314 * entry 2: [place holder/future]
315 * entry 3: base of channel record 0
316 * entry 3 + (x*3): base of channel record 'x'
317 * entry LAST: NULL channel entry marking end of records
318 *
319 * Record:
320 * int 0: base channel
321 * int 1: frequency of base channel,
322 * expressed as fb{mHz} * 16,
323 * int 2: offset frequency between channels,
324 * expressed as fo{mHz} * 16,
325 */
326
327 /*
328 * North American Broadcast Channels:
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: 471.25 mHz - 83: 885.25 mHz
334 *
335 * IF freq: 45.75 mHz
336 */
337 #define OFFSET 6.00
338 static int nabcst[] = {
339 83, (int)( 45.75 * FREQFACTOR), 0,
340 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
341 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
342 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
343 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
344 0
345 };
346 #undef OFFSET
347
348 /*
349 * North American Cable Channels, IRC:
350 *
351 * 2: 55.25 mHz - 4: 67.25 mHz
352 * 5: 77.25 mHz - 6: 83.25 mHz
353 * 7: 175.25 mHz - 13: 211.25 mHz
354 * 14: 121.25 mHz - 22: 169.25 mHz
355 * 23: 217.25 mHz - 94: 643.25 mHz
356 * 95: 91.25 mHz - 99: 115.25 mHz
357 *
358 * IF freq: 45.75 mHz
359 */
360 #define OFFSET 6.00
361 static int irccable[] = {
362 116, (int)( 45.75 * FREQFACTOR), 0,
363 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
364 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
365 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
366 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
367 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
368 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
369 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
370 0
371 };
372 #undef OFFSET
373
374 /*
375 * North American Cable Channels, HRC:
376 *
377 * 2: 54 mHz - 4: 66 mHz
378 * 5: 78 mHz - 6: 84 mHz
379 * 7: 174 mHz - 13: 210 mHz
380 * 14: 120 mHz - 22: 168 mHz
381 * 23: 216 mHz - 94: 642 mHz
382 * 95: 90 mHz - 99: 114 mHz
383 *
384 * IF freq: 45.75 mHz
385 */
386 #define OFFSET 6.00
387 static int hrccable[] = {
388 116, (int)( 45.75 * FREQFACTOR), 0,
389 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
390 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
391 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
392 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
393 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
394 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
395 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
396 0
397 };
398 #undef OFFSET
399
400 /*
401 * Western European broadcast channels:
402 *
403 * (there are others that appear to vary between countries - rmt)
404 *
405 * here's the table Philips provides:
406 * caution, some of the offsets don't compute...
407 *
408 * 1 4525 700 N21
409 *
410 * 2 4825 700 E2
411 * 3 5525 700 E3
412 * 4 6225 700 E4
413 *
414 * 5 17525 700 E5
415 * 6 18225 700 E6
416 * 7 18925 700 E7
417 * 8 19625 700 E8
418 * 9 20325 700 E9
419 * 10 21025 700 E10
420 * 11 21725 700 E11
421 * 12 22425 700 E12
422 *
423 * 13 5375 700 ITA
424 * 14 6225 700 ITB
425 *
426 * 15 8225 700 ITC
427 *
428 * 16 17525 700 ITD
429 * 17 18325 700 ITE
430 *
431 * 18 19225 700 ITF
432 * 19 20125 700 ITG
433 * 20 21025 700 ITH
434 *
435 * 21 47125 800 E21
436 * 22 47925 800 E22
437 * 23 48725 800 E23
438 * 24 49525 800 E24
439 * 25 50325 800 E25
440 * 26 51125 800 E26
441 * 27 51925 800 E27
442 * 28 52725 800 E28
443 * 29 53525 800 E29
444 * 30 54325 800 E30
445 * 31 55125 800 E31
446 * 32 55925 800 E32
447 * 33 56725 800 E33
448 * 34 57525 800 E34
449 * 35 58325 800 E35
450 * 36 59125 800 E36
451 * 37 59925 800 E37
452 * 38 60725 800 E38
453 * 39 61525 800 E39
454 * 40 62325 800 E40
455 * 41 63125 800 E41
456 * 42 63925 800 E42
457 * 43 64725 800 E43
458 * 44 65525 800 E44
459 * 45 66325 800 E45
460 * 46 67125 800 E46
461 * 47 67925 800 E47
462 * 48 68725 800 E48
463 * 49 69525 800 E49
464 * 50 70325 800 E50
465 * 51 71125 800 E51
466 * 52 71925 800 E52
467 * 53 72725 800 E53
468 * 54 73525 800 E54
469 * 55 74325 800 E55
470 * 56 75125 800 E56
471 * 57 75925 800 E57
472 * 58 76725 800 E58
473 * 59 77525 800 E59
474 * 60 78325 800 E60
475 * 61 79125 800 E61
476 * 62 79925 800 E62
477 * 63 80725 800 E63
478 * 64 81525 800 E64
479 * 65 82325 800 E65
480 * 66 83125 800 E66
481 * 67 83925 800 E67
482 * 68 84725 800 E68
483 * 69 85525 800 E69
484 *
485 * 70 4575 800 IA
486 * 71 5375 800 IB
487 * 72 6175 800 IC
488 *
489 * 74 6925 700 S01
490 * 75 7625 700 S02
491 * 76 8325 700 S03
492 *
493 * 80 10525 700 S1
494 * 81 11225 700 S2
495 * 82 11925 700 S3
496 * 83 12625 700 S4
497 * 84 13325 700 S5
498 * 85 14025 700 S6
499 * 86 14725 700 S7
500 * 87 15425 700 S8
501 * 88 16125 700 S9
502 * 89 16825 700 S10
503 * 90 23125 700 S11
504 * 91 23825 700 S12
505 * 92 24525 700 S13
506 * 93 25225 700 S14
507 * 94 25925 700 S15
508 * 95 26625 700 S16
509 * 96 27325 700 S17
510 * 97 28025 700 S18
511 * 98 28725 700 S19
512 * 99 29425 700 S20
513 *
514 *
515 * Channels S21 - S41 are taken from
516 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html
517 *
518 * 100 30325 800 S21
519 * 101 31125 800 S22
520 * 102 31925 800 S23
521 * 103 32725 800 S24
522 * 104 33525 800 S25
523 * 105 34325 800 S26
524 * 106 35125 800 S27
525 * 107 35925 800 S28
526 * 108 36725 800 S29
527 * 109 37525 800 S30
528 * 110 38325 800 S31
529 * 111 39125 800 S32
530 * 112 39925 800 S33
531 * 113 40725 800 S34
532 * 114 41525 800 S35
533 * 115 42325 800 S36
534 * 116 43125 800 S37
535 * 117 43925 800 S38
536 * 118 44725 800 S39
537 * 119 45525 800 S40
538 * 120 46325 800 S41
539 *
540 * 121 3890 000 IFFREQ
541 *
542 */
543 static int weurope[] = {
544 121, (int)( 38.90 * FREQFACTOR), 0,
545 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
546 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
547 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
548 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
549 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
550 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
551 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR),
552 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
553 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR),
554 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
555 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR),
556 0
557 };
558
559 /*
560 * Japanese Broadcast Channels:
561 *
562 * 1: 91.25MHz - 3: 103.25MHz
563 * 4: 171.25MHz - 7: 189.25MHz
564 * 8: 193.25MHz - 12: 217.25MHz (VHF)
565 * 13: 471.25MHz - 62: 765.25MHz (UHF)
566 *
567 * IF freq: 45.75 mHz
568 * OR
569 * IF freq: 58.75 mHz
570 */
571 #define OFFSET 6.00
572 #define IF_FREQ 45.75
573 static int jpnbcst[] = {
574 62, (int)(IF_FREQ * FREQFACTOR), 0,
575 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
576 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
577 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
578 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
579 0
580 };
581 #undef IF_FREQ
582 #undef OFFSET
583
584 /*
585 * Japanese Cable Channels:
586 *
587 * 1: 91.25MHz - 3: 103.25MHz
588 * 4: 171.25MHz - 7: 189.25MHz
589 * 8: 193.25MHz - 12: 217.25MHz
590 * 13: 109.25MHz - 21: 157.25MHz
591 * 22: 165.25MHz
592 * 23: 223.25MHz - 63: 463.25MHz
593 *
594 * IF freq: 45.75 mHz
595 */
596 #define OFFSET 6.00
597 #define IF_FREQ 45.75
598 static int jpncable[] = {
599 63, (int)(IF_FREQ * FREQFACTOR), 0,
600 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
601 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
602 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
603 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
604 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
605 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
606 0
607 };
608 #undef IF_FREQ
609 #undef OFFSET
610
611 /*
612 * xUSSR Broadcast Channels:
613 *
614 * 1: 49.75MHz - 2: 59.25MHz
615 * 3: 77.25MHz - 5: 93.25MHz
616 * 6: 175.25MHz - 12: 223.25MHz
617 * 13-20 - not exist
618 * 21: 471.25MHz - 34: 575.25MHz
619 * 35: 583.25MHz - 69: 855.25MHz
620 *
621 * Cable channels
622 *
623 * 70: 111.25MHz - 77: 167.25MHz
624 * 78: 231.25MHz -107: 463.25MHz
625 *
626 * IF freq: 38.90 MHz
627 */
628 #define IF_FREQ 38.90
629 static int xussr[] = {
630 107, (int)(IF_FREQ * FREQFACTOR), 0,
631 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
632 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
633 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
634 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
635 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
636 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
637 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR),
638 0
639 };
640 #undef IF_FREQ
641
642 /*
643 * Australian broadcast channels
644 */
645 #define OFFSET 7.00
646 #define IF_FREQ 38.90
647 static int australia[] = {
648 83, (int)(IF_FREQ * FREQFACTOR), 0,
649 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
650 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
651 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
652 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
653 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
654 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
655 0
656 };
657 #undef OFFSET
658 #undef IF_FREQ
659
660 /*
661 * France broadcast channels
662 */
663 #define OFFSET 8.00
664 #define IF_FREQ 38.90
665 static int france[] = {
666 69, (int)(IF_FREQ * FREQFACTOR), 0,
667 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */
668 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */
669 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */
670 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */
671 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */
672 0
673 };
674 #undef OFFSET
675 #undef IF_FREQ
676
677 static struct {
678 int *ptr;
679 char name[BT848_MAX_CHNLSET_NAME_LEN];
680 } freqTable[] = {
681 {NULL, ""},
682 {nabcst, "nabcst"},
683 {irccable, "cableirc"},
684 {hrccable, "cablehrc"},
685 {weurope, "weurope"},
686 {jpnbcst, "jpnbcst"},
687 {jpncable, "jpncable"},
688 {xussr, "xussr"},
689 {australia, "australia"},
690 {france, "france"},
691
692 };
693
694 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ]
695 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ]
696 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ]
697 static int
frequency_lookup(bktr_ptr_t bktr,int channel)698 frequency_lookup( bktr_ptr_t bktr, int channel )
699 {
700 int x;
701
702 /* check for "> MAX channel" */
703 x = 0;
704 if ( channel > TBL_CHNL )
705 return( -1 );
706
707 /* search the table for data */
708 for ( x = 3; TBL_CHNL; x += 3 ) {
709 if ( channel >= TBL_CHNL ) {
710 return( TBL_BASE_FREQ +
711 ((channel - TBL_CHNL) * TBL_OFFSET) );
712 }
713 }
714
715 /* not found, must be below the MIN channel */
716 return( -1 );
717 }
718 #undef TBL_OFFSET
719 #undef TBL_BASE_FREQ
720 #undef TBL_CHNL
721
722
723 #define TBL_IF (bktr->format_params == BT848_IFORM_F_NTSCJ || \
724 bktr->format_params == BT848_IFORM_F_NTSCM ? \
725 nabcst[1] : weurope[1])
726
727
728 /* Initialise the tuner structures in the bktr_softc */
729 /* This is needed as the tuner details are no longer globally declared */
730
select_tuner(bktr_ptr_t bktr,int tuner_type)731 void select_tuner( bktr_ptr_t bktr, int tuner_type ) {
732 if (tuner_type < Bt848_MAX_TUNER) {
733 bktr->card.tuner = &tuners[ tuner_type ];
734 } else {
735 bktr->card.tuner = NULL;
736 }
737 }
738
739 /*
740 * Tuner Notes:
741 * Programming the tuner properly is quite complicated.
742 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner.
743 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of
744 * 87.5 Mhz to 108.0 Mhz.
745 *
746 * RF and IF. RF = radio frequencies, it is the transmitted signal.
747 * IF is the Intermediate Frequency (the offset from the base
748 * signal where the video, color, audio and NICAM signals are.
749 *
750 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz
751 * NICAM at 32.348 Mhz.
752 * Strangely enough, there is an IF (intermediate frequency) for
753 * FM Radio which is 10.7 Mhz.
754 *
755 * The tuner also works in Bands. Philips bands are
756 * FM radio band 87.50 to 108.00 MHz
757 * Low band 45.75 to 170.00 MHz
758 * Mid band 170.00 to 450.00 MHz
759 * High band 450.00 to 855.25 MHz
760 *
761 *
762 * Now we need to set the PLL on the tuner to the required freuqncy.
763 * It has a programmable divisor.
764 * For TV we want
765 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF
766 * are in MHz.
767
768 * For RADIO we want a different equation.
769 * freq IF is 10.70 MHz (so the data sheet tells me)
770 * N = (freq RF + freq IF) / step size
771 * The step size must be set to 50 khz (so the data sheet tells me)
772 * (note this is 50 kHz, the other things are in MHz)
773 * so we end up with N = 20x(freq RF + 10.7)
774 *
775 */
776
777 #define LOW_BAND 0
778 #define MID_BAND 1
779 #define HIGH_BAND 2
780 #define FM_RADIO_BAND 3
781
782
783 /* Check if these are correct for other than Philips PAL */
784 #define STATUSBIT_COLD 0x80
785 #define STATUSBIT_LOCK 0x40
786 #define STATUSBIT_TV 0x20
787 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */
788 #define STATUSBIT_ADC 0x07
789
790 /*
791 * set the frequency of the tuner
792 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16
793 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100
794 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625)
795 *
796 */
797 int
tv_freq(bktr_ptr_t bktr,int frequency,int type)798 tv_freq( bktr_ptr_t bktr, int frequency, int type )
799 {
800 const struct TUNER* tuner;
801 u_char addr;
802 u_char control;
803 u_char band;
804 int N;
805 int band_select = 0;
806 #if defined( TEST_TUNER_AFC )
807 int oldFrequency, afcDelta;
808 #endif
809
810 tuner = bktr->card.tuner;
811 if ( tuner == NULL )
812 return( -1 );
813
814 if (tuner == &tuners[TUNER_MT2032]) {
815 mt2032_set_tv_freq(bktr, frequency);
816 return 0;
817 }
818 if (type == TV_FREQUENCY) {
819 /*
820 * select the band based on frequency
821 * XXX FIXME: get the cross-over points from the tuner struct
822 */
823 if ( frequency < (160 * FREQFACTOR ) )
824 band_select = LOW_BAND;
825 else if ( frequency < (454 * FREQFACTOR ) )
826 band_select = MID_BAND;
827 else
828 band_select = HIGH_BAND;
829
830 #if defined( TEST_TUNER_AFC )
831 if ( bktr->tuner.afc )
832 frequency -= 4;
833 #endif
834 /*
835 * N = 16 * { fRF(pc) + fIF(pc) }
836 * or N = 16* fRF(pc) + 16*fIF(pc) }
837 * where:
838 * pc is picture carrier, fRF & fIF are in MHz
839 *
840 * fortunatly, frequency is passed in as MHz * 16
841 * and the TBL_IF frequency is also stored in MHz * 16
842 */
843 N = frequency + TBL_IF;
844
845 /* set the address of the PLL */
846 addr = bktr->card.tuner_pllAddr;
847 control = tuner->pllControl[ band_select ];
848 band = tuner->bandAddrs[ band_select ];
849
850 if(!(band && control)) /* Don't try to set un- */
851 return(-1); /* supported modes. */
852
853 if ( frequency > bktr->tuner.frequency ) {
854 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
855 i2cWrite( bktr, addr, control, band );
856 }
857 else {
858 i2cWrite( bktr, addr, control, band );
859 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
860 }
861
862 #if defined( TUNER_AFC )
863 if ( bktr->tuner.afc == TRUE ) {
864 #if defined( TEST_TUNER_AFC )
865 oldFrequency = frequency;
866 #endif
867 if ( (N = do_afc( bktr, addr, N )) < 0 ) {
868 /* AFC failed, restore requested frequency */
869 N = frequency + TBL_IF;
870 #if defined( TEST_TUNER_AFC )
871 printf("%s: do_afc: failed to lock\n",
872 bktr_name(bktr));
873 #endif
874 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
875 }
876 else
877 frequency = N - TBL_IF;
878 #if defined( TEST_TUNER_AFC )
879 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16);
880 afcDelta = frequency - oldFrequency;
881 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16);
882 #endif
883 }
884 #endif /* TUNER_AFC */
885
886 bktr->tuner.frequency = frequency;
887 }
888
889 if ( type == FM_RADIO_FREQUENCY ) {
890 band_select = FM_RADIO_BAND;
891
892 /*
893 * N = { fRF(pc) + fIF(pc) }/step_size
894 * The step size is 50kHz for FM radio.
895 * (eg after 102.35MHz comes 102.40 MHz)
896 * fIF is 10.7 MHz (as detailed in the specs)
897 *
898 * frequency is passed in as MHz * 100
899 *
900 * So, we have N = (frequency/100 + 10.70) /(50/1000)
901 */
902 N = (frequency + 1070)/5;
903
904 /* set the address of the PLL */
905 addr = bktr->card.tuner_pllAddr;
906 control = tuner->pllControl[ band_select ];
907 band = tuner->bandAddrs[ band_select ];
908
909 if(!(band && control)) /* Don't try to set un- */
910 return(-1); /* supported modes. */
911
912 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in
913 * the ioctls RADIO_SETMODE
914 * and RADIO_GETMODE */
915
916 i2cWrite( bktr, addr, control, band );
917 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
918
919 bktr->tuner.frequency = (N * 5) - 1070;
920
921
922 }
923
924
925 return( 0 );
926 }
927
928
929
930 #if defined( TUNER_AFC )
931 /*
932 *
933 */
934 int
do_afc(bktr_ptr_t bktr,int addr,int frequency)935 do_afc( bktr_ptr_t bktr, int addr, int frequency )
936 {
937 int step;
938 int status;
939 int origFrequency;
940
941 origFrequency = frequency;
942
943 /* wait for first setting to take effect */
944 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 );
945
946 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
947 return( -1 );
948
949 #if defined( TEST_TUNER_AFC )
950 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
951 #endif
952 for ( step = 0; step < AFC_MAX_STEP; ++step ) {
953 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
954 goto fubar;
955 if ( !(status & 0x40) ) {
956 #if defined( TEST_TUNER_AFC )
957 printf( "%s: no lock!\n", bktr_name(bktr) );
958 #endif
959 goto fubar;
960 }
961
962 switch( status & AFC_BITS ) {
963 case AFC_FREQ_CENTERED:
964 #if defined( TEST_TUNER_AFC )
965 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
966 #endif
967 return( frequency );
968
969 case AFC_FREQ_MINUS_125:
970 case AFC_FREQ_MINUS_62:
971 #if defined( TEST_TUNER_AFC )
972 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
973 #endif
974 --frequency;
975 break;
976
977 case AFC_FREQ_PLUS_62:
978 case AFC_FREQ_PLUS_125:
979 #if defined( TEST_TUNER_AFC )
980 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
981 #endif
982 ++frequency;
983 break;
984 }
985
986 i2cWrite( bktr, addr,
987 (frequency>>8) & 0x7f, frequency & 0xff );
988 DELAY( AFC_DELAY );
989 }
990
991 fubar:
992 i2cWrite( bktr, addr,
993 (origFrequency>>8) & 0x7f, origFrequency & 0xff );
994
995 return( -1 );
996 }
997 #endif /* TUNER_AFC */
998 #undef TBL_IF
999
1000
1001 /*
1002 * Get the Tuner status and signal strength
1003 */
get_tuner_status(bktr_ptr_t bktr)1004 int get_tuner_status( bktr_ptr_t bktr ) {
1005 if (bktr->card.tuner == &tuners[TUNER_MT2032])
1006 return 0;
1007 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 );
1008 }
1009
1010 /*
1011 * set the channel of the tuner
1012 */
1013 int
tv_channel(bktr_ptr_t bktr,int channel)1014 tv_channel( bktr_ptr_t bktr, int channel )
1015 {
1016 int frequency;
1017
1018 /* calculate the frequency according to tuner type */
1019 if ( (frequency = frequency_lookup( bktr, channel )) < 0 )
1020 return( -1 );
1021
1022 /* set the new frequency */
1023 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 )
1024 return( -1 );
1025
1026 /* OK to update records */
1027 return( (bktr->tuner.channel = channel) );
1028 }
1029
1030 /*
1031 * get channelset name
1032 */
1033 int
tuner_getchnlset(struct bktr_chnlset * chnlset)1034 tuner_getchnlset(struct bktr_chnlset *chnlset)
1035 {
1036 if (( chnlset->index < CHNLSET_MIN ) ||
1037 ( chnlset->index > CHNLSET_MAX ))
1038 return( EINVAL );
1039
1040 memcpy(&chnlset->name, &freqTable[chnlset->index].name,
1041 BT848_MAX_CHNLSET_NAME_LEN);
1042
1043 chnlset->max_channel=freqTable[chnlset->index].ptr[0];
1044 return( 0 );
1045 }
1046
1047
1048
1049
1050 #define TDA9887_ADDR 0x86
1051
1052 static int
TDA9887_init(bktr_ptr_t bktr,int output2_enable)1053 TDA9887_init(bktr_ptr_t bktr, int output2_enable)
1054 {
1055 u_char addr = TDA9887_ADDR;
1056
1057 i2cWrite(bktr, addr, 0, output2_enable ? 0x50 : 0xd0);
1058 i2cWrite(bktr, addr, 1, 0x6e); /* takeover point / de-emphasis */
1059
1060 /* PAL BG: 0x09 PAL I: 0x0a NTSC: 0x04 */
1061 #ifdef MT2032_NTSC
1062 i2cWrite(bktr, addr, 2, 0x04);
1063 #else
1064 i2cWrite(bktr, addr, 2, 0x09);
1065 #endif
1066 return 0;
1067 }
1068
1069
1070
1071 #define MT2032_OPTIMIZE_VCO 1
1072
1073 /* holds the value of XOGC register after init */
1074 static int MT2032_XOGC = 4;
1075
1076 /* card.tuner_pllAddr not set during init */
1077 #define MT2032_ADDR 0xc0
1078
1079 #ifndef MT2032_ADDR
1080 #define MT2032_ADDR (bktr->card.tuner_pllAddr)
1081 #endif
1082
1083 static int
_MT2032_GetRegister(bktr_ptr_t bktr,u_char regNum)1084 _MT2032_GetRegister(bktr_ptr_t bktr, u_char regNum)
1085 {
1086 int ch;
1087
1088 if (i2cWrite(bktr, MT2032_ADDR, regNum, -1) == -1) {
1089 if (bootverbose)
1090 printf("%s: MT2032 write failed (i2c addr %#x)\n",
1091 bktr_name(bktr), MT2032_ADDR);
1092 return -1;
1093 }
1094 if ((ch = i2cRead(bktr, MT2032_ADDR + 1)) == -1) {
1095 if (bootverbose)
1096 printf("%s: MT2032 get register %d failed\n",
1097 bktr_name(bktr), regNum);
1098 return -1;
1099 }
1100 return ch;
1101 }
1102
1103 static void
_MT2032_SetRegister(bktr_ptr_t bktr,u_char regNum,u_char data)1104 _MT2032_SetRegister(bktr_ptr_t bktr, u_char regNum, u_char data)
1105 {
1106 i2cWrite(bktr, MT2032_ADDR, regNum, data);
1107 }
1108
1109 #define MT2032_GetRegister(r) _MT2032_GetRegister(bktr,r)
1110 #define MT2032_SetRegister(r,d) _MT2032_SetRegister(bktr,r,d)
1111
1112
1113 int
mt2032_init(bktr_ptr_t bktr)1114 mt2032_init(bktr_ptr_t bktr)
1115 {
1116 u_char rdbuf[22];
1117 int xogc, xok = 0;
1118 int i;
1119 int x;
1120
1121 TDA9887_init(bktr, 0);
1122
1123 for (i = 0; i < 21; i++) {
1124 if ((x = MT2032_GetRegister(i)) == -1)
1125 break;
1126 rdbuf[i] = x;
1127 }
1128 if (i < 21)
1129 return -1;
1130
1131 printf("%s: MT2032: Companycode=%02x%02x Part=%02x Revision=%02x\n",
1132 bktr_name(bktr),
1133 rdbuf[0x11], rdbuf[0x12], rdbuf[0x13], rdbuf[0x14]);
1134 if (rdbuf[0x13] != 4) {
1135 printf("%s: MT2032 not found or unknown type\n", bktr_name(bktr));
1136 return -1;
1137 }
1138
1139 /* Initialize Registers per spec. */
1140 MT2032_SetRegister(2, 0xff);
1141 MT2032_SetRegister(3, 0x0f);
1142 MT2032_SetRegister(4, 0x1f);
1143 MT2032_SetRegister(6, 0xe4);
1144 MT2032_SetRegister(7, 0x8f);
1145 MT2032_SetRegister(8, 0xc3);
1146 MT2032_SetRegister(9, 0x4e);
1147 MT2032_SetRegister(10, 0xec);
1148 MT2032_SetRegister(13, 0x32);
1149
1150 /* Adjust XOGC (register 7), wait for XOK */
1151 xogc = 7;
1152 do {
1153 DELAY(10000);
1154 xok = MT2032_GetRegister(0x0e) & 0x01;
1155 if (xok == 1) {
1156 break;
1157 }
1158 xogc--;
1159 if (xogc == 3) {
1160 xogc = 4; /* min. 4 per spec */
1161 break;
1162 }
1163 MT2032_SetRegister(7, 0x88 + xogc);
1164 } while (xok != 1);
1165
1166 TDA9887_init(bktr, 1);
1167
1168 MT2032_XOGC = xogc;
1169
1170 return 0;
1171 }
1172
1173 static int
MT2032_SpurCheck(int f1,int f2,int spectrum_from,int spectrum_to)1174 MT2032_SpurCheck(int f1, int f2, int spectrum_from, int spectrum_to)
1175 {
1176 int n1 = 1, n2, f;
1177
1178 f1 = f1 / 1000; /* scale to kHz to avoid 32bit overflows */
1179 f2 = f2 / 1000;
1180 spectrum_from /= 1000;
1181 spectrum_to /= 1000;
1182
1183 do {
1184 n2 = -n1;
1185 f = n1 * (f1 - f2);
1186 do {
1187 n2--;
1188 f = f - f2;
1189 if ((f > spectrum_from) && (f < spectrum_to)) {
1190 return 1;
1191 }
1192 } while ((f > (f2 - spectrum_to)) || (n2 > -5));
1193 n1++;
1194 } while (n1 < 5);
1195
1196 return 0;
1197 }
1198
1199 static int
MT2032_ComputeFreq(int rfin,int if1,int if2,int spectrum_from,int spectrum_to,unsigned char * buf,int * ret_sel,int xogc)1200 MT2032_ComputeFreq(
1201 int rfin,
1202 int if1,
1203 int if2,
1204 int spectrum_from,
1205 int spectrum_to,
1206 unsigned char *buf,
1207 int *ret_sel,
1208 int xogc
1209 )
1210 { /* all in Hz */
1211 int fref, lo1, lo1n, lo1a, s, sel;
1212 int lo1freq, desired_lo1, desired_lo2, lo2, lo2n, lo2a,
1213 lo2num, lo2freq;
1214 int nLO1adjust;
1215
1216 fref = 5250 * 1000; /* 5.25MHz */
1217
1218 /* per spec 2.3.1 */
1219 desired_lo1 = rfin + if1;
1220 lo1 = (2 * (desired_lo1 / 1000) + (fref / 1000)) / (2 * fref / 1000);
1221 lo1freq = lo1 * fref;
1222 desired_lo2 = lo1freq - rfin - if2;
1223
1224 /* per spec 2.3.2 */
1225 for (nLO1adjust = 1; nLO1adjust < 3; nLO1adjust++) {
1226 if (!MT2032_SpurCheck(lo1freq, desired_lo2, spectrum_from, spectrum_to)) {
1227 break;
1228 }
1229 if (lo1freq < desired_lo1) {
1230 lo1 += nLO1adjust;
1231 } else {
1232 lo1 -= nLO1adjust;
1233 }
1234
1235 lo1freq = lo1 * fref;
1236 desired_lo2 = lo1freq - rfin - if2;
1237 }
1238
1239 /* per spec 2.3.3 */
1240 s = lo1freq / 1000 / 1000;
1241
1242 if (MT2032_OPTIMIZE_VCO) {
1243 if (s > 1890) {
1244 sel = 0;
1245 } else if (s > 1720) {
1246 sel = 1;
1247 } else if (s > 1530) {
1248 sel = 2;
1249 } else if (s > 1370) {
1250 sel = 3;
1251 } else {
1252 sel = 4;/* >1090 */
1253 }
1254 } else {
1255 if (s > 1790) {
1256 sel = 0;/* <1958 */
1257 } else if (s > 1617) {
1258 sel = 1;
1259 } else if (s > 1449) {
1260 sel = 2;
1261 } else if (s > 1291) {
1262 sel = 3;
1263 } else {
1264 sel = 4;/* >1090 */
1265 }
1266 }
1267
1268 *ret_sel = sel;
1269
1270 /* per spec 2.3.4 */
1271 lo1n = lo1 / 8;
1272 lo1a = lo1 - (lo1n * 8);
1273 lo2 = desired_lo2 / fref;
1274 lo2n = lo2 / 8;
1275 lo2a = lo2 - (lo2n * 8);
1276 /* scale to fit in 32bit arith */
1277 lo2num = ((desired_lo2 / 1000) % (fref / 1000)) * 3780 / (fref / 1000);
1278 lo2freq = (lo2a + 8 * lo2n) * fref + lo2num * (fref / 1000) / 3780 * 1000;
1279
1280 if (lo1a < 0 || lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a < 0 ||
1281 lo2a > 7 || lo2n < 17 || lo2n > 30) {
1282 printf("MT2032: parameter out of range\n");
1283 return -1;
1284 }
1285 /* set up MT2032 register map for transfer over i2c */
1286 buf[0] = lo1n - 1;
1287 buf[1] = lo1a | (sel << 4);
1288 buf[2] = 0x86; /* LOGC */
1289 buf[3] = 0x0f; /* reserved */
1290 buf[4] = 0x1f;
1291 buf[5] = (lo2n - 1) | (lo2a << 5);
1292 if (rfin < 400 * 1000 * 1000) {
1293 buf[6] = 0xe4;
1294 } else {
1295 buf[6] = 0xf4; /* set PKEN per rev 1.2 */
1296 }
1297
1298 buf[7] = 8 + xogc;
1299 buf[8] = 0xc3; /* reserved */
1300 buf[9] = 0x4e; /* reserved */
1301 buf[10] = 0xec; /* reserved */
1302 buf[11] = (lo2num & 0xff);
1303 buf[12] = (lo2num >> 8) | 0x80; /* Lo2RST */
1304
1305 return 0;
1306 }
1307
1308 static int
MT2032_CheckLOLock(bktr_ptr_t bktr)1309 MT2032_CheckLOLock(bktr_ptr_t bktr)
1310 {
1311 int t, lock = 0;
1312 for (t = 0; t < 10; t++) {
1313 lock = MT2032_GetRegister(0x0e) & 0x06;
1314 if (lock == 6) {
1315 break;
1316 }
1317 DELAY(1000);
1318 }
1319 return lock;
1320 }
1321
1322 static int
MT2032_OptimizeVCO(bktr_ptr_t bktr,int sel,int lock)1323 MT2032_OptimizeVCO(bktr_ptr_t bktr, int sel, int lock)
1324 {
1325 int tad1, lo1a;
1326
1327 tad1 = MT2032_GetRegister(0x0f) & 0x07;
1328
1329 if (tad1 == 0) {
1330 return lock;
1331 }
1332 if (tad1 == 1) {
1333 return lock;
1334 }
1335 if (tad1 == 2) {
1336 if (sel == 0) {
1337 return lock;
1338 } else {
1339 sel--;
1340 }
1341 } else {
1342 if (sel < 4) {
1343 sel++;
1344 } else {
1345 return lock;
1346 }
1347 }
1348 lo1a = MT2032_GetRegister(0x01) & 0x07;
1349 MT2032_SetRegister(0x01, lo1a | (sel << 4));
1350 lock = MT2032_CheckLOLock(bktr);
1351 return lock;
1352 }
1353
1354 static int
MT2032_SetIFFreq(bktr_ptr_t bktr,int rfin,int if1,int if2,int from,int to)1355 MT2032_SetIFFreq(bktr_ptr_t bktr, int rfin, int if1, int if2, int from, int to)
1356 {
1357 u_char buf[21];
1358 int lint_try, sel, lock = 0;
1359
1360 if (MT2032_ComputeFreq(rfin, if1, if2, from, to, &buf[0], &sel, MT2032_XOGC) == -1)
1361 return -1;
1362
1363 TDA9887_init(bktr, 0);
1364
1365 /* send only the relevant registers per Rev. 1.2 */
1366 MT2032_SetRegister(0, buf[0x00]);
1367 MT2032_SetRegister(1, buf[0x01]);
1368 MT2032_SetRegister(2, buf[0x02]);
1369
1370 MT2032_SetRegister(5, buf[0x05]);
1371 MT2032_SetRegister(6, buf[0x06]);
1372 MT2032_SetRegister(7, buf[0x07]);
1373
1374 MT2032_SetRegister(11, buf[0x0B]);
1375 MT2032_SetRegister(12, buf[0x0C]);
1376
1377 /* wait for PLLs to lock (per manual), retry LINT if not. */
1378 for (lint_try = 0; lint_try < 2; lint_try++) {
1379 lock = MT2032_CheckLOLock(bktr);
1380
1381 if (MT2032_OPTIMIZE_VCO) {
1382 lock = MT2032_OptimizeVCO(bktr, sel, lock);
1383 }
1384 if (lock == 6) {
1385 break;
1386 }
1387 /* set LINT to re-init PLLs */
1388 MT2032_SetRegister(7, 0x80 + 8 + MT2032_XOGC);
1389 DELAY(10000);
1390 MT2032_SetRegister(7, 8 + MT2032_XOGC);
1391 }
1392 if (lock != 6)
1393 printf("%s: PLL didn't lock\n", bktr_name(bktr));
1394
1395 MT2032_SetRegister(2, 0x20);
1396
1397 TDA9887_init(bktr, 1);
1398 return 0;
1399 }
1400
1401 static void
mt2032_set_tv_freq(bktr_ptr_t bktr,unsigned int freq)1402 mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq)
1403 {
1404 int if2,from,to;
1405 int stat, tad;
1406
1407 #ifdef MT2032_NTSC
1408 from=40750*1000;
1409 to=46750*1000;
1410 if2=45750*1000;
1411 #else
1412 from=32900*1000;
1413 to=39900*1000;
1414 if2=38900*1000;
1415 #endif
1416
1417 if (MT2032_SetIFFreq(bktr, freq*62500 /* freq*1000*1000/16 */,
1418 1090*1000*1000, if2, from, to) == 0) {
1419 bktr->tuner.frequency = freq;
1420 stat = MT2032_GetRegister(0x0e);
1421 tad = MT2032_GetRegister(0x0f);
1422 if (bootverbose)
1423 printf("%s: frequency set to %d, st = %#x, tad = %#x\n",
1424 bktr_name(bktr), freq*62500, stat, tad);
1425 }
1426 }
1427