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: 58.75 mHz
568 */
569 #define OFFSET 6.00
570 #define IF_FREQ 58.75
571 static int jpnbcst[] = {
572 62, (int)(IF_FREQ * FREQFACTOR), 0,
573 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
574 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
575 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
576 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
577 0
578 };
579 #undef IF_FREQ
580 #undef OFFSET
581
582 /*
583 * Japanese Cable Channels:
584 *
585 * 1: 91.25MHz - 3: 103.25MHz
586 * 4: 171.25MHz - 7: 189.25MHz
587 * 8: 193.25MHz - 12: 217.25MHz
588 * 13: 109.25MHz - 21: 157.25MHz
589 * 22: 165.25MHz
590 * 23: 223.25MHz - 63: 463.25MHz
591 *
592 * IF freq: 58.75 mHz
593 */
594 #define OFFSET 6.00
595 #define IF_FREQ 58.75
596 static int jpncable[] = {
597 63, (int)(IF_FREQ * FREQFACTOR), 0,
598 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
599 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
600 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
601 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
602 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
603 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
604 0
605 };
606 #undef IF_FREQ
607 #undef OFFSET
608
609 /*
610 * xUSSR Broadcast Channels:
611 *
612 * 1: 49.75MHz - 2: 59.25MHz
613 * 3: 77.25MHz - 5: 93.25MHz
614 * 6: 175.25MHz - 12: 223.25MHz
615 * 13-20 - not exist
616 * 21: 471.25MHz - 34: 575.25MHz
617 * 35: 583.25MHz - 69: 855.25MHz
618 *
619 * Cable channels
620 *
621 * 70: 111.25MHz - 77: 167.25MHz
622 * 78: 231.25MHz -107: 463.25MHz
623 *
624 * IF freq: 38.90 MHz
625 */
626 #define IF_FREQ 38.90
627 static int xussr[] = {
628 107, (int)(IF_FREQ * FREQFACTOR), 0,
629 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
630 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
631 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
632 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
633 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
634 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR),
635 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR),
636 0
637 };
638 #undef IF_FREQ
639
640 /*
641 * Australian broadcast channels
642 */
643 #define OFFSET 7.00
644 #define IF_FREQ 38.90
645 static int australia[] = {
646 83, (int)(IF_FREQ * FREQFACTOR), 0,
647 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
648 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
649 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
650 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
651 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
652 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR),
653 0
654 };
655 #undef OFFSET
656 #undef IF_FREQ
657
658 /*
659 * France broadcast channels
660 */
661 #define OFFSET 8.00
662 #define IF_FREQ 38.90
663 static int france[] = {
664 69, (int)(IF_FREQ * FREQFACTOR), 0,
665 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */
666 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */
667 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */
668 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */
669 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */
670 0
671 };
672 #undef OFFSET
673 #undef IF_FREQ
674
675 static struct {
676 int *ptr;
677 char name[BT848_MAX_CHNLSET_NAME_LEN];
678 } freqTable[] = {
679 {NULL, ""},
680 {nabcst, "nabcst"},
681 {irccable, "cableirc"},
682 {hrccable, "cablehrc"},
683 {weurope, "weurope"},
684 {jpnbcst, "jpnbcst"},
685 {jpncable, "jpncable"},
686 {xussr, "xussr"},
687 {australia, "australia"},
688 {france, "france"},
689
690 };
691
692 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ]
693 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ]
694 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ]
695 static int
frequency_lookup(bktr_ptr_t bktr,int channel)696 frequency_lookup( bktr_ptr_t bktr, int channel )
697 {
698 int x;
699
700 /* check for "> MAX channel" */
701 x = 0;
702 if ( channel > TBL_CHNL )
703 return( -1 );
704
705 /* search the table for data */
706 for ( x = 3; TBL_CHNL; x += 3 ) {
707 if ( channel >= TBL_CHNL ) {
708 return( TBL_BASE_FREQ +
709 ((channel - TBL_CHNL) * TBL_OFFSET) );
710 }
711 }
712
713 /* not found, must be below the MIN channel */
714 return( -1 );
715 }
716 #undef TBL_OFFSET
717 #undef TBL_BASE_FREQ
718 #undef TBL_CHNL
719
720
721 #define TBL_IF (bktr->format_params == BT848_IFORM_F_NTSCJ || \
722 bktr->format_params == BT848_IFORM_F_NTSCM ? \
723 nabcst[1] : weurope[1])
724
725
726 /* Initialise the tuner structures in the bktr_softc */
727 /* This is needed as the tuner details are no longer globally declared */
728
select_tuner(bktr_ptr_t bktr,int tuner_type)729 void select_tuner( bktr_ptr_t bktr, int tuner_type ) {
730 if (tuner_type < Bt848_MAX_TUNER) {
731 bktr->card.tuner = &tuners[ tuner_type ];
732 } else {
733 bktr->card.tuner = NULL;
734 }
735 }
736
737 /*
738 * Tuner Notes:
739 * Programming the tuner properly is quite complicated.
740 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner.
741 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of
742 * 87.5 Mhz to 108.0 Mhz.
743 *
744 * RF and IF. RF = radio frequencies, it is the transmitted signal.
745 * IF is the Intermediate Frequency (the offset from the base
746 * signal where the video, color, audio and NICAM signals are.
747 *
748 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz
749 * NICAM at 32.348 Mhz.
750 * Strangely enough, there is an IF (intermediate frequency) for
751 * FM Radio which is 10.7 Mhz.
752 *
753 * The tuner also works in Bands. Philips bands are
754 * FM radio band 87.50 to 108.00 MHz
755 * Low band 45.75 to 170.00 MHz
756 * Mid band 170.00 to 450.00 MHz
757 * High band 450.00 to 855.25 MHz
758 *
759 *
760 * Now we need to set the PLL on the tuner to the required freuqncy.
761 * It has a programmable divisor.
762 * For TV we want
763 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF
764 * are in MHz.
765
766 * For RADIO we want a different equation.
767 * freq IF is 10.70 MHz (so the data sheet tells me)
768 * N = (freq RF + freq IF) / step size
769 * The step size must be set to 50 khz (so the data sheet tells me)
770 * (note this is 50 kHz, the other things are in MHz)
771 * so we end up with N = 20x(freq RF + 10.7)
772 *
773 */
774
775 #define LOW_BAND 0
776 #define MID_BAND 1
777 #define HIGH_BAND 2
778 #define FM_RADIO_BAND 3
779
780
781 /* Check if these are correct for other than Philips PAL */
782 #define STATUSBIT_COLD 0x80
783 #define STATUSBIT_LOCK 0x40
784 #define STATUSBIT_TV 0x20
785 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */
786 #define STATUSBIT_ADC 0x07
787
788 /*
789 * set the frequency of the tuner
790 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16
791 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100
792 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625)
793 *
794 */
795 int
tv_freq(bktr_ptr_t bktr,int frequency,int type)796 tv_freq( bktr_ptr_t bktr, int frequency, int type )
797 {
798 const struct TUNER* tuner;
799 u_char addr;
800 u_char control;
801 u_char band;
802 int N;
803 int band_select = 0;
804 #if defined( TEST_TUNER_AFC )
805 int oldFrequency, afcDelta;
806 #endif
807
808 tuner = bktr->card.tuner;
809 if ( tuner == NULL )
810 return( -1 );
811
812 if (tuner == &tuners[TUNER_MT2032]) {
813 mt2032_set_tv_freq(bktr, frequency);
814 return 0;
815 }
816 if (type == TV_FREQUENCY) {
817 /*
818 * select the band based on frequency
819 * XXX FIXME: get the cross-over points from the tuner struct
820 */
821 if ( frequency < (160 * FREQFACTOR ) )
822 band_select = LOW_BAND;
823 else if ( frequency < (454 * FREQFACTOR ) )
824 band_select = MID_BAND;
825 else
826 band_select = HIGH_BAND;
827
828 #if defined( TEST_TUNER_AFC )
829 if ( bktr->tuner.afc )
830 frequency -= 4;
831 #endif
832 /*
833 * N = 16 * { fRF(pc) + fIF(pc) }
834 * or N = 16* fRF(pc) + 16*fIF(pc) }
835 * where:
836 * pc is picture carrier, fRF & fIF are in MHz
837 *
838 * fortunatly, frequency is passed in as MHz * 16
839 * and the TBL_IF frequency is also stored in MHz * 16
840 */
841 N = frequency + TBL_IF;
842
843 /* set the address of the PLL */
844 addr = bktr->card.tuner_pllAddr;
845 control = tuner->pllControl[ band_select ];
846 band = tuner->bandAddrs[ band_select ];
847
848 if(!(band && control)) /* Don't try to set un- */
849 return(-1); /* supported modes. */
850
851 if ( frequency > bktr->tuner.frequency ) {
852 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
853 i2cWrite( bktr, addr, control, band );
854 }
855 else {
856 i2cWrite( bktr, addr, control, band );
857 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
858 }
859
860 #if defined( TUNER_AFC )
861 if ( bktr->tuner.afc == TRUE ) {
862 #if defined( TEST_TUNER_AFC )
863 oldFrequency = frequency;
864 #endif
865 if ( (N = do_afc( bktr, addr, N )) < 0 ) {
866 /* AFC failed, restore requested frequency */
867 N = frequency + TBL_IF;
868 #if defined( TEST_TUNER_AFC )
869 printf("%s: do_afc: failed to lock\n",
870 bktr_name(bktr));
871 #endif
872 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
873 }
874 else
875 frequency = N - TBL_IF;
876 #if defined( TEST_TUNER_AFC )
877 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16);
878 afcDelta = frequency - oldFrequency;
879 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16);
880 #endif
881 }
882 #endif /* TUNER_AFC */
883
884 bktr->tuner.frequency = frequency;
885 }
886
887 if ( type == FM_RADIO_FREQUENCY ) {
888 band_select = FM_RADIO_BAND;
889
890 /*
891 * N = { fRF(pc) + fIF(pc) }/step_size
892 * The step size is 50kHz for FM radio.
893 * (eg after 102.35MHz comes 102.40 MHz)
894 * fIF is 10.7 MHz (as detailed in the specs)
895 *
896 * frequency is passed in as MHz * 100
897 *
898 * So, we have N = (frequency/100 + 10.70) /(50/1000)
899 */
900 N = (frequency + 1070)/5;
901
902 /* set the address of the PLL */
903 addr = bktr->card.tuner_pllAddr;
904 control = tuner->pllControl[ band_select ];
905 band = tuner->bandAddrs[ band_select ];
906
907 if(!(band && control)) /* Don't try to set un- */
908 return(-1); /* supported modes. */
909
910 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in
911 * the ioctls RADIO_SETMODE
912 * and RADIO_GETMODE */
913
914 i2cWrite( bktr, addr, control, band );
915 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff );
916
917 bktr->tuner.frequency = (N * 5) - 1070;
918
919
920 }
921
922
923 return( 0 );
924 }
925
926
927
928 #if defined( TUNER_AFC )
929 /*
930 *
931 */
932 int
do_afc(bktr_ptr_t bktr,int addr,int frequency)933 do_afc( bktr_ptr_t bktr, int addr, int frequency )
934 {
935 int step;
936 int status;
937 int origFrequency;
938
939 origFrequency = frequency;
940
941 /* wait for first setting to take effect */
942 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 );
943
944 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
945 return( -1 );
946
947 #if defined( TEST_TUNER_AFC )
948 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
949 #endif
950 for ( step = 0; step < AFC_MAX_STEP; ++step ) {
951 if ( (status = i2cRead( bktr, addr + 1 )) < 0 )
952 goto fubar;
953 if ( !(status & 0x40) ) {
954 #if defined( TEST_TUNER_AFC )
955 printf( "%s: no lock!\n", bktr_name(bktr) );
956 #endif
957 goto fubar;
958 }
959
960 switch( status & AFC_BITS ) {
961 case AFC_FREQ_CENTERED:
962 #if defined( TEST_TUNER_AFC )
963 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
964 #endif
965 return( frequency );
966
967 case AFC_FREQ_MINUS_125:
968 case AFC_FREQ_MINUS_62:
969 #if defined( TEST_TUNER_AFC )
970 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
971 #endif
972 --frequency;
973 break;
974
975 case AFC_FREQ_PLUS_62:
976 case AFC_FREQ_PLUS_125:
977 #if defined( TEST_TUNER_AFC )
978 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status );
979 #endif
980 ++frequency;
981 break;
982 }
983
984 i2cWrite( bktr, addr,
985 (frequency>>8) & 0x7f, frequency & 0xff );
986 DELAY( AFC_DELAY );
987 }
988
989 fubar:
990 i2cWrite( bktr, addr,
991 (origFrequency>>8) & 0x7f, origFrequency & 0xff );
992
993 return( -1 );
994 }
995 #endif /* TUNER_AFC */
996 #undef TBL_IF
997
998
999 /*
1000 * Get the Tuner status and signal strength
1001 */
get_tuner_status(bktr_ptr_t bktr)1002 int get_tuner_status( bktr_ptr_t bktr ) {
1003 if (bktr->card.tuner == &tuners[TUNER_MT2032])
1004 return 0;
1005 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 );
1006 }
1007
1008 /*
1009 * set the channel of the tuner
1010 */
1011 int
tv_channel(bktr_ptr_t bktr,int channel)1012 tv_channel( bktr_ptr_t bktr, int channel )
1013 {
1014 int frequency;
1015
1016 /* calculate the frequency according to tuner type */
1017 if ( (frequency = frequency_lookup( bktr, channel )) < 0 )
1018 return( -1 );
1019
1020 /* set the new frequency */
1021 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 )
1022 return( -1 );
1023
1024 /* OK to update records */
1025 return( (bktr->tuner.channel = channel) );
1026 }
1027
1028 /*
1029 * get channelset name
1030 */
1031 int
tuner_getchnlset(struct bktr_chnlset * chnlset)1032 tuner_getchnlset(struct bktr_chnlset *chnlset)
1033 {
1034 if (( chnlset->index < CHNLSET_MIN ) ||
1035 ( chnlset->index > CHNLSET_MAX ))
1036 return( EINVAL );
1037
1038 memcpy(&chnlset->name, &freqTable[chnlset->index].name,
1039 BT848_MAX_CHNLSET_NAME_LEN);
1040
1041 chnlset->max_channel=freqTable[chnlset->index].ptr[0];
1042 return( 0 );
1043 }
1044
1045
1046
1047
1048 #define TDA9887_ADDR 0x86
1049
1050 static int
TDA9887_init(bktr_ptr_t bktr,int output2_enable)1051 TDA9887_init(bktr_ptr_t bktr, int output2_enable)
1052 {
1053 u_char addr = TDA9887_ADDR;
1054
1055 i2cWrite(bktr, addr, 0, output2_enable ? 0x50 : 0xd0);
1056 i2cWrite(bktr, addr, 1, 0x6e); /* takeover point / de-emphasis */
1057
1058 /* PAL BG: 0x09 PAL I: 0x0a NTSC: 0x04 */
1059 #ifdef MT2032_NTSC
1060 i2cWrite(bktr, addr, 2, 0x04);
1061 #else
1062 i2cWrite(bktr, addr, 2, 0x09);
1063 #endif
1064 return 0;
1065 }
1066
1067
1068
1069 #define MT2032_OPTIMIZE_VCO 1
1070
1071 /* holds the value of XOGC register after init */
1072 static int MT2032_XOGC = 4;
1073
1074 /* card.tuner_pllAddr not set during init */
1075 #define MT2032_ADDR 0xc0
1076
1077 #ifndef MT2032_ADDR
1078 #define MT2032_ADDR (bktr->card.tuner_pllAddr)
1079 #endif
1080
1081 static int
_MT2032_GetRegister(bktr_ptr_t bktr,u_char regNum)1082 _MT2032_GetRegister(bktr_ptr_t bktr, u_char regNum)
1083 {
1084 int ch;
1085
1086 if (i2cWrite(bktr, MT2032_ADDR, regNum, -1) == -1) {
1087 if (bootverbose)
1088 printf("%s: MT2032 write failed (i2c addr %#x)\n",
1089 bktr_name(bktr), MT2032_ADDR);
1090 return -1;
1091 }
1092 if ((ch = i2cRead(bktr, MT2032_ADDR + 1)) == -1) {
1093 if (bootverbose)
1094 printf("%s: MT2032 get register %d failed\n",
1095 bktr_name(bktr), regNum);
1096 return -1;
1097 }
1098 return ch;
1099 }
1100
1101 static void
_MT2032_SetRegister(bktr_ptr_t bktr,u_char regNum,u_char data)1102 _MT2032_SetRegister(bktr_ptr_t bktr, u_char regNum, u_char data)
1103 {
1104 i2cWrite(bktr, MT2032_ADDR, regNum, data);
1105 }
1106
1107 #define MT2032_GetRegister(r) _MT2032_GetRegister(bktr,r)
1108 #define MT2032_SetRegister(r,d) _MT2032_SetRegister(bktr,r,d)
1109
1110
1111 int
mt2032_init(bktr_ptr_t bktr)1112 mt2032_init(bktr_ptr_t bktr)
1113 {
1114 u_char rdbuf[22];
1115 int xogc, xok = 0;
1116 int i;
1117 int x;
1118
1119 TDA9887_init(bktr, 0);
1120
1121 for (i = 0; i < 21; i++) {
1122 if ((x = MT2032_GetRegister(i)) == -1)
1123 break;
1124 rdbuf[i] = x;
1125 }
1126 if (i < 21)
1127 return -1;
1128
1129 printf("%s: MT2032: Companycode=%02x%02x Part=%02x Revision=%02x\n",
1130 bktr_name(bktr),
1131 rdbuf[0x11], rdbuf[0x12], rdbuf[0x13], rdbuf[0x14]);
1132 if (rdbuf[0x13] != 4) {
1133 printf("%s: MT2032 not found or unknown type\n", bktr_name(bktr));
1134 return -1;
1135 }
1136
1137 /* Initialize Registers per spec. */
1138 MT2032_SetRegister(2, 0xff);
1139 MT2032_SetRegister(3, 0x0f);
1140 MT2032_SetRegister(4, 0x1f);
1141 MT2032_SetRegister(6, 0xe4);
1142 MT2032_SetRegister(7, 0x8f);
1143 MT2032_SetRegister(8, 0xc3);
1144 MT2032_SetRegister(9, 0x4e);
1145 MT2032_SetRegister(10, 0xec);
1146 MT2032_SetRegister(13, 0x32);
1147
1148 /* Adjust XOGC (register 7), wait for XOK */
1149 xogc = 7;
1150 do {
1151 DELAY(10000);
1152 xok = MT2032_GetRegister(0x0e) & 0x01;
1153 if (xok == 1) {
1154 break;
1155 }
1156 xogc--;
1157 if (xogc == 3) {
1158 xogc = 4; /* min. 4 per spec */
1159 break;
1160 }
1161 MT2032_SetRegister(7, 0x88 + xogc);
1162 } while (xok != 1);
1163
1164 TDA9887_init(bktr, 1);
1165
1166 MT2032_XOGC = xogc;
1167
1168 return 0;
1169 }
1170
1171 static int
MT2032_SpurCheck(int f1,int f2,int spectrum_from,int spectrum_to)1172 MT2032_SpurCheck(int f1, int f2, int spectrum_from, int spectrum_to)
1173 {
1174 int n1 = 1, n2, f;
1175
1176 f1 = f1 / 1000; /* scale to kHz to avoid 32bit overflows */
1177 f2 = f2 / 1000;
1178 spectrum_from /= 1000;
1179 spectrum_to /= 1000;
1180
1181 do {
1182 n2 = -n1;
1183 f = n1 * (f1 - f2);
1184 do {
1185 n2--;
1186 f = f - f2;
1187 if ((f > spectrum_from) && (f < spectrum_to)) {
1188 return 1;
1189 }
1190 } while ((f > (f2 - spectrum_to)) || (n2 > -5));
1191 n1++;
1192 } while (n1 < 5);
1193
1194 return 0;
1195 }
1196
1197 static int
MT2032_ComputeFreq(int rfin,int if1,int if2,int spectrum_from,int spectrum_to,unsigned char * buf,int * ret_sel,int xogc)1198 MT2032_ComputeFreq(
1199 int rfin,
1200 int if1,
1201 int if2,
1202 int spectrum_from,
1203 int spectrum_to,
1204 unsigned char *buf,
1205 int *ret_sel,
1206 int xogc
1207 )
1208 { /* all in Hz */
1209 int fref, lo1, lo1n, lo1a, s, sel;
1210 int lo1freq, desired_lo1, desired_lo2, lo2, lo2n, lo2a,
1211 lo2num, lo2freq;
1212 int nLO1adjust;
1213
1214 fref = 5250 * 1000; /* 5.25MHz */
1215
1216 /* per spec 2.3.1 */
1217 desired_lo1 = rfin + if1;
1218 lo1 = (2 * (desired_lo1 / 1000) + (fref / 1000)) / (2 * fref / 1000);
1219 lo1freq = lo1 * fref;
1220 desired_lo2 = lo1freq - rfin - if2;
1221
1222 /* per spec 2.3.2 */
1223 for (nLO1adjust = 1; nLO1adjust < 3; nLO1adjust++) {
1224 if (!MT2032_SpurCheck(lo1freq, desired_lo2, spectrum_from, spectrum_to)) {
1225 break;
1226 }
1227 if (lo1freq < desired_lo1) {
1228 lo1 += nLO1adjust;
1229 } else {
1230 lo1 -= nLO1adjust;
1231 }
1232
1233 lo1freq = lo1 * fref;
1234 desired_lo2 = lo1freq - rfin - if2;
1235 }
1236
1237 /* per spec 2.3.3 */
1238 s = lo1freq / 1000 / 1000;
1239
1240 if (MT2032_OPTIMIZE_VCO) {
1241 if (s > 1890) {
1242 sel = 0;
1243 } else if (s > 1720) {
1244 sel = 1;
1245 } else if (s > 1530) {
1246 sel = 2;
1247 } else if (s > 1370) {
1248 sel = 3;
1249 } else {
1250 sel = 4;/* >1090 */
1251 }
1252 } else {
1253 if (s > 1790) {
1254 sel = 0;/* <1958 */
1255 } else if (s > 1617) {
1256 sel = 1;
1257 } else if (s > 1449) {
1258 sel = 2;
1259 } else if (s > 1291) {
1260 sel = 3;
1261 } else {
1262 sel = 4;/* >1090 */
1263 }
1264 }
1265
1266 *ret_sel = sel;
1267
1268 /* per spec 2.3.4 */
1269 lo1n = lo1 / 8;
1270 lo1a = lo1 - (lo1n * 8);
1271 lo2 = desired_lo2 / fref;
1272 lo2n = lo2 / 8;
1273 lo2a = lo2 - (lo2n * 8);
1274 /* scale to fit in 32bit arith */
1275 lo2num = ((desired_lo2 / 1000) % (fref / 1000)) * 3780 / (fref / 1000);
1276 lo2freq = (lo2a + 8 * lo2n) * fref + lo2num * (fref / 1000) / 3780 * 1000;
1277
1278 if (lo1a < 0 || lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a < 0 ||
1279 lo2a > 7 || lo2n < 17 || lo2n > 30) {
1280 printf("MT2032: parameter out of range\n");
1281 return -1;
1282 }
1283 /* set up MT2032 register map for transfer over i2c */
1284 buf[0] = lo1n - 1;
1285 buf[1] = lo1a | (sel << 4);
1286 buf[2] = 0x86; /* LOGC */
1287 buf[3] = 0x0f; /* reserved */
1288 buf[4] = 0x1f;
1289 buf[5] = (lo2n - 1) | (lo2a << 5);
1290 if (rfin < 400 * 1000 * 1000) {
1291 buf[6] = 0xe4;
1292 } else {
1293 buf[6] = 0xf4; /* set PKEN per rev 1.2 */
1294 }
1295
1296 buf[7] = 8 + xogc;
1297 buf[8] = 0xc3; /* reserved */
1298 buf[9] = 0x4e; /* reserved */
1299 buf[10] = 0xec; /* reserved */
1300 buf[11] = (lo2num & 0xff);
1301 buf[12] = (lo2num >> 8) | 0x80; /* Lo2RST */
1302
1303 return 0;
1304 }
1305
1306 static int
MT2032_CheckLOLock(bktr_ptr_t bktr)1307 MT2032_CheckLOLock(bktr_ptr_t bktr)
1308 {
1309 int t, lock = 0;
1310 for (t = 0; t < 10; t++) {
1311 lock = MT2032_GetRegister(0x0e) & 0x06;
1312 if (lock == 6) {
1313 break;
1314 }
1315 DELAY(1000);
1316 }
1317 return lock;
1318 }
1319
1320 static int
MT2032_OptimizeVCO(bktr_ptr_t bktr,int sel,int lock)1321 MT2032_OptimizeVCO(bktr_ptr_t bktr, int sel, int lock)
1322 {
1323 int tad1, lo1a;
1324
1325 tad1 = MT2032_GetRegister(0x0f) & 0x07;
1326
1327 if (tad1 == 0) {
1328 return lock;
1329 }
1330 if (tad1 == 1) {
1331 return lock;
1332 }
1333 if (tad1 == 2) {
1334 if (sel == 0) {
1335 return lock;
1336 } else {
1337 sel--;
1338 }
1339 } else {
1340 if (sel < 4) {
1341 sel++;
1342 } else {
1343 return lock;
1344 }
1345 }
1346 lo1a = MT2032_GetRegister(0x01) & 0x07;
1347 MT2032_SetRegister(0x01, lo1a | (sel << 4));
1348 lock = MT2032_CheckLOLock(bktr);
1349 return lock;
1350 }
1351
1352 static int
MT2032_SetIFFreq(bktr_ptr_t bktr,int rfin,int if1,int if2,int from,int to)1353 MT2032_SetIFFreq(bktr_ptr_t bktr, int rfin, int if1, int if2, int from, int to)
1354 {
1355 u_char buf[21];
1356 int lint_try, sel, lock = 0;
1357
1358 if (MT2032_ComputeFreq(rfin, if1, if2, from, to, &buf[0], &sel, MT2032_XOGC) == -1)
1359 return -1;
1360
1361 TDA9887_init(bktr, 0);
1362
1363 /* send only the relevant registers per Rev. 1.2 */
1364 MT2032_SetRegister(0, buf[0x00]);
1365 MT2032_SetRegister(1, buf[0x01]);
1366 MT2032_SetRegister(2, buf[0x02]);
1367
1368 MT2032_SetRegister(5, buf[0x05]);
1369 MT2032_SetRegister(6, buf[0x06]);
1370 MT2032_SetRegister(7, buf[0x07]);
1371
1372 MT2032_SetRegister(11, buf[0x0B]);
1373 MT2032_SetRegister(12, buf[0x0C]);
1374
1375 /* wait for PLLs to lock (per manual), retry LINT if not. */
1376 for (lint_try = 0; lint_try < 2; lint_try++) {
1377 lock = MT2032_CheckLOLock(bktr);
1378
1379 if (MT2032_OPTIMIZE_VCO) {
1380 lock = MT2032_OptimizeVCO(bktr, sel, lock);
1381 }
1382 if (lock == 6) {
1383 break;
1384 }
1385 /* set LINT to re-init PLLs */
1386 MT2032_SetRegister(7, 0x80 + 8 + MT2032_XOGC);
1387 DELAY(10000);
1388 MT2032_SetRegister(7, 8 + MT2032_XOGC);
1389 }
1390 if (lock != 6)
1391 printf("%s: PLL didn't lock\n", bktr_name(bktr));
1392
1393 MT2032_SetRegister(2, 0x20);
1394
1395 TDA9887_init(bktr, 1);
1396 return 0;
1397 }
1398
1399 static void
mt2032_set_tv_freq(bktr_ptr_t bktr,unsigned int freq)1400 mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq)
1401 {
1402 int if2,from,to;
1403 int stat, tad;
1404
1405 #ifdef MT2032_NTSC
1406 from=40750*1000;
1407 to=46750*1000;
1408 if2=45750*1000;
1409 #else
1410 from=32900*1000;
1411 to=39900*1000;
1412 if2=38900*1000;
1413 #endif
1414
1415 if (MT2032_SetIFFreq(bktr, freq*62500 /* freq*1000*1000/16 */,
1416 1090*1000*1000, if2, from, to) == 0) {
1417 bktr->tuner.frequency = freq;
1418 stat = MT2032_GetRegister(0x0e);
1419 tad = MT2032_GetRegister(0x0f);
1420 if (bootverbose)
1421 printf("%s: frequency set to %d, st = %#x, tad = %#x\n",
1422 bktr_name(bktr), freq*62500, stat, tad);
1423 }
1424 }
1425