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26#include "stv0900.h"
27#include "stv0900_reg.h"
28#include "stv0900_priv.h"
29
30s32 shiftx(s32 x, int demod, s32 shift)
31{
32 if (demod == 1)
33 return x - shift;
34
35 return x;
36}
37
38int stv0900_check_signal_presence(struct stv0900_internal *intp,
39 enum fe_stv0900_demod_num demod)
40{
41 s32 carr_offset,
42 agc2_integr,
43 max_carrier;
44
45 int no_signal = FALSE;
46
47 carr_offset = (stv0900_read_reg(intp, CFR2) << 8)
48 | stv0900_read_reg(intp, CFR1);
49 carr_offset = ge2comp(carr_offset, 16);
50 agc2_integr = (stv0900_read_reg(intp, AGC2I1) << 8)
51 | stv0900_read_reg(intp, AGC2I0);
52 max_carrier = intp->srch_range[demod] / 1000;
53
54 max_carrier += (max_carrier / 10);
55 max_carrier = 65536 * (max_carrier / 2);
56 max_carrier /= intp->mclk / 1000;
57 if (max_carrier > 0x4000)
58 max_carrier = 0x4000;
59
60 if ((agc2_integr > 0x2000)
61 || (carr_offset > (2 * max_carrier))
62 || (carr_offset < (-2 * max_carrier)))
63 no_signal = TRUE;
64
65 return no_signal;
66}
67
68static void stv0900_get_sw_loop_params(struct stv0900_internal *intp,
69 s32 *frequency_inc, s32 *sw_timeout,
70 s32 *steps,
71 enum fe_stv0900_demod_num demod)
72{
73 s32 timeout, freq_inc, max_steps, srate, max_carrier;
74
75 enum fe_stv0900_search_standard standard;
76
77 srate = intp->symbol_rate[demod];
78 max_carrier = intp->srch_range[demod] / 1000;
79 max_carrier += max_carrier / 10;
80 standard = intp->srch_standard[demod];
81
82 max_carrier = 65536 * (max_carrier / 2);
83 max_carrier /= intp->mclk / 1000;
84
85 if (max_carrier > 0x4000)
86 max_carrier = 0x4000;
87
88 freq_inc = srate;
89 freq_inc /= intp->mclk >> 10;
90 freq_inc = freq_inc << 6;
91
92 switch (standard) {
93 case STV0900_SEARCH_DVBS1:
94 case STV0900_SEARCH_DSS:
95 freq_inc *= 3;
96 timeout = 20;
97 break;
98 case STV0900_SEARCH_DVBS2:
99 freq_inc *= 4;
100 timeout = 25;
101 break;
102 case STV0900_AUTO_SEARCH:
103 default:
104 freq_inc *= 3;
105 timeout = 25;
106 break;
107 }
108
109 freq_inc /= 100;
110
111 if ((freq_inc > max_carrier) || (freq_inc < 0))
112 freq_inc = max_carrier / 2;
113
114 timeout *= 27500;
115
116 if (srate > 0)
117 timeout /= srate / 1000;
118
119 if ((timeout > 100) || (timeout < 0))
120 timeout = 100;
121
122 max_steps = (max_carrier / freq_inc) + 1;
123
124 if ((max_steps > 100) || (max_steps < 0)) {
125 max_steps = 100;
126 freq_inc = max_carrier / max_steps;
127 }
128
129 *frequency_inc = freq_inc;
130 *sw_timeout = timeout;
131 *steps = max_steps;
132
133}
134
135static int stv0900_search_carr_sw_loop(struct stv0900_internal *intp,
136 s32 FreqIncr, s32 Timeout, int zigzag,
137 s32 MaxStep, enum fe_stv0900_demod_num demod)
138{
139 int no_signal,
140 lock = FALSE;
141 s32 stepCpt,
142 freqOffset,
143 max_carrier;
144
145 max_carrier = intp->srch_range[demod] / 1000;
146 max_carrier += (max_carrier / 10);
147
148 max_carrier = 65536 * (max_carrier / 2);
149 max_carrier /= intp->mclk / 1000;
150
151 if (max_carrier > 0x4000)
152 max_carrier = 0x4000;
153
154 if (zigzag == TRUE)
155 freqOffset = 0;
156 else
157 freqOffset = -max_carrier + FreqIncr;
158
159 stepCpt = 0;
160
161 do {
162 stv0900_write_reg(intp, DMDISTATE, 0x1c);
163 stv0900_write_reg(intp, CFRINIT1, (freqOffset / 256) & 0xff);
164 stv0900_write_reg(intp, CFRINIT0, freqOffset & 0xff);
165 stv0900_write_reg(intp, DMDISTATE, 0x18);
166 stv0900_write_bits(intp, ALGOSWRST, 1);
167
168 if (intp->chip_id == 0x12) {
169 stv0900_write_bits(intp, RST_HWARE, 1);
170 stv0900_write_bits(intp, RST_HWARE, 0);
171 }
172
173 if (zigzag == TRUE) {
174 if (freqOffset >= 0)
175 freqOffset = -freqOffset - 2 * FreqIncr;
176 else
177 freqOffset = -freqOffset;
178 } else
179 freqOffset += + 2 * FreqIncr;
180
181 stepCpt++;
182 lock = stv0900_get_demod_lock(intp, demod, Timeout);
183 no_signal = stv0900_check_signal_presence(intp, demod);
184
185 } while ((lock == FALSE)
186 && (no_signal == FALSE)
187 && ((freqOffset - FreqIncr) < max_carrier)
188 && ((freqOffset + FreqIncr) > -max_carrier)
189 && (stepCpt < MaxStep));
190
191 stv0900_write_bits(intp, ALGOSWRST, 0);
192
193 return lock;
194}
195
196static int stv0900_sw_algo(struct stv0900_internal *intp,
197 enum fe_stv0900_demod_num demod)
198{
199 int lock = FALSE,
200 no_signal,
201 zigzag;
202 s32 s2fw,
203 fqc_inc,
204 sft_stp_tout,
205 trial_cntr,
206 max_steps;
207
208 stv0900_get_sw_loop_params(intp, &fqc_inc, &sft_stp_tout,
209 &max_steps, demod);
210 switch (intp->srch_standard[demod]) {
211 case STV0900_SEARCH_DVBS1:
212 case STV0900_SEARCH_DSS:
213 if (intp->chip_id >= 0x20)
214 stv0900_write_reg(intp, CARFREQ, 0x3b);
215 else
216 stv0900_write_reg(intp, CARFREQ, 0xef);
217
218 stv0900_write_reg(intp, DMDCFGMD, 0x49);
219 zigzag = FALSE;
220 break;
221 case STV0900_SEARCH_DVBS2:
222 if (intp->chip_id >= 0x20)
223 stv0900_write_reg(intp, CORRELABS, 0x79);
224 else
225 stv0900_write_reg(intp, CORRELABS, 0x68);
226
227 stv0900_write_reg(intp, DMDCFGMD, 0x89);
228
229 zigzag = TRUE;
230 break;
231 case STV0900_AUTO_SEARCH:
232 default:
233 if (intp->chip_id >= 0x20) {
234 stv0900_write_reg(intp, CARFREQ, 0x3b);
235 stv0900_write_reg(intp, CORRELABS, 0x79);
236 } else {
237 stv0900_write_reg(intp, CARFREQ, 0xef);
238 stv0900_write_reg(intp, CORRELABS, 0x68);
239 }
240
241 stv0900_write_reg(intp, DMDCFGMD, 0xc9);
242 zigzag = FALSE;
243 break;
244 }
245
246 trial_cntr = 0;
247 do {
248 lock = stv0900_search_carr_sw_loop(intp,
249 fqc_inc,
250 sft_stp_tout,
251 zigzag,
252 max_steps,
253 demod);
254 no_signal = stv0900_check_signal_presence(intp, demod);
255 trial_cntr++;
256 if ((lock == TRUE)
257 || (no_signal == TRUE)
258 || (trial_cntr == 2)) {
259
260 if (intp->chip_id >= 0x20) {
261 stv0900_write_reg(intp, CARFREQ, 0x49);
262 stv0900_write_reg(intp, CORRELABS, 0x9e);
263 } else {
264 stv0900_write_reg(intp, CARFREQ, 0xed);
265 stv0900_write_reg(intp, CORRELABS, 0x88);
266 }
267
268 if ((stv0900_get_bits(intp, HEADER_MODE) ==
269 STV0900_DVBS2_FOUND) &&
270 (lock == TRUE)) {
271 msleep(sft_stp_tout);
272 s2fw = stv0900_get_bits(intp, FLYWHEEL_CPT);
273
274 if (s2fw < 0xd) {
275 msleep(sft_stp_tout);
276 s2fw = stv0900_get_bits(intp,
277 FLYWHEEL_CPT);
278 }
279
280 if (s2fw < 0xd) {
281 lock = FALSE;
282
283 if (trial_cntr < 2) {
284 if (intp->chip_id >= 0x20)
285 stv0900_write_reg(intp,
286 CORRELABS,
287 0x79);
288 else
289 stv0900_write_reg(intp,
290 CORRELABS,
291 0x68);
292
293 stv0900_write_reg(intp,
294 DMDCFGMD,
295 0x89);
296 }
297 }
298 }
299 }
300
301 } while ((lock == FALSE)
302 && (trial_cntr < 2)
303 && (no_signal == FALSE));
304
305 return lock;
306}
307
308static u32 stv0900_get_symbol_rate(struct stv0900_internal *intp,
309 u32 mclk,
310 enum fe_stv0900_demod_num demod)
311{
312 s32 rem1, rem2, intval1, intval2, srate;
313
314 srate = (stv0900_get_bits(intp, SYMB_FREQ3) << 24) +
315 (stv0900_get_bits(intp, SYMB_FREQ2) << 16) +
316 (stv0900_get_bits(intp, SYMB_FREQ1) << 8) +
317 (stv0900_get_bits(intp, SYMB_FREQ0));
318 dprintk("lock: srate=%d r0=0x%x r1=0x%x r2=0x%x r3=0x%x \n",
319 srate, stv0900_get_bits(intp, SYMB_FREQ0),
320 stv0900_get_bits(intp, SYMB_FREQ1),
321 stv0900_get_bits(intp, SYMB_FREQ2),
322 stv0900_get_bits(intp, SYMB_FREQ3));
323
324 intval1 = (mclk) >> 16;
325 intval2 = (srate) >> 16;
326
327 rem1 = (mclk) % 0x10000;
328 rem2 = (srate) % 0x10000;
329 srate = (intval1 * intval2) +
330 ((intval1 * rem2) >> 16) +
331 ((intval2 * rem1) >> 16);
332
333 return srate;
334}
335
336static void stv0900_set_symbol_rate(struct stv0900_internal *intp,
337 u32 mclk, u32 srate,
338 enum fe_stv0900_demod_num demod)
339{
340 u32 symb;
341
342 dprintk("%s: Mclk %d, SR %d, Dmd %d\n", __func__, mclk,
343 srate, demod);
344
345 if (srate > 60000000) {
346 symb = srate << 4;
347 symb /= (mclk >> 12);
348 } else if (srate > 6000000) {
349 symb = srate << 6;
350 symb /= (mclk >> 10);
351 } else {
352 symb = srate << 9;
353 symb /= (mclk >> 7);
354 }
355
356 stv0900_write_reg(intp, SFRINIT1, (symb >> 8) & 0x7f);
357 stv0900_write_reg(intp, SFRINIT1 + 1, (symb & 0xff));
358}
359
360static void stv0900_set_max_symbol_rate(struct stv0900_internal *intp,
361 u32 mclk, u32 srate,
362 enum fe_stv0900_demod_num demod)
363{
364 u32 symb;
365
366 srate = 105 * (srate / 100);
367
368 if (srate > 60000000) {
369 symb = srate << 4;
370 symb /= (mclk >> 12);
371 } else if (srate > 6000000) {
372 symb = srate << 6;
373 symb /= (mclk >> 10);
374 } else {
375 symb = srate << 9;
376 symb /= (mclk >> 7);
377 }
378
379 if (symb < 0x7fff) {
380 stv0900_write_reg(intp, SFRUP1, (symb >> 8) & 0x7f);
381 stv0900_write_reg(intp, SFRUP1 + 1, (symb & 0xff));
382 } else {
383 stv0900_write_reg(intp, SFRUP1, 0x7f);
384 stv0900_write_reg(intp, SFRUP1 + 1, 0xff);
385 }
386}
387
388static void stv0900_set_min_symbol_rate(struct stv0900_internal *intp,
389 u32 mclk, u32 srate,
390 enum fe_stv0900_demod_num demod)
391{
392 u32 symb;
393
394 srate = 95 * (srate / 100);
395 if (srate > 60000000) {
396 symb = srate << 4;
397 symb /= (mclk >> 12);
398
399 } else if (srate > 6000000) {
400 symb = srate << 6;
401 symb /= (mclk >> 10);
402
403 } else {
404 symb = srate << 9;
405 symb /= (mclk >> 7);
406 }
407
408 stv0900_write_reg(intp, SFRLOW1, (symb >> 8) & 0xff);
409 stv0900_write_reg(intp, SFRLOW1 + 1, (symb & 0xff));
410}
411
412static s32 stv0900_get_timing_offst(struct stv0900_internal *intp,
413 u32 srate,
414 enum fe_stv0900_demod_num demod)
415{
416 s32 timingoffset;
417
418
419 timingoffset = (stv0900_read_reg(intp, TMGREG2) << 16) +
420 (stv0900_read_reg(intp, TMGREG2 + 1) << 8) +
421 (stv0900_read_reg(intp, TMGREG2 + 2));
422
423 timingoffset = ge2comp(timingoffset, 24);
424
425
426 if (timingoffset == 0)
427 timingoffset = 1;
428
429 timingoffset = ((s32)srate * 10) / ((s32)0x1000000 / timingoffset);
430 timingoffset /= 320;
431
432 return timingoffset;
433}
434
435static void stv0900_set_dvbs2_rolloff(struct stv0900_internal *intp,
436 enum fe_stv0900_demod_num demod)
437{
438 s32 rolloff;
439
440 if (intp->chip_id == 0x10) {
441 stv0900_write_bits(intp, MANUALSX_ROLLOFF, 1);
442 rolloff = stv0900_read_reg(intp, MATSTR1) & 0x03;
443 stv0900_write_bits(intp, ROLLOFF_CONTROL, rolloff);
444 } else if (intp->chip_id <= 0x20)
445 stv0900_write_bits(intp, MANUALSX_ROLLOFF, 0);
446 else
447 stv0900_write_bits(intp, MANUALS2_ROLLOFF, 0);
448}
449
450static u32 stv0900_carrier_width(u32 srate, enum fe_stv0900_rolloff ro)
451{
452 u32 rolloff;
453
454 switch (ro) {
455 case STV0900_20:
456 rolloff = 20;
457 break;
458 case STV0900_25:
459 rolloff = 25;
460 break;
461 case STV0900_35:
462 default:
463 rolloff = 35;
464 break;
465 }
466
467 return srate + (srate * rolloff) / 100;
468}
469
470static int stv0900_check_timing_lock(struct stv0900_internal *intp,
471 enum fe_stv0900_demod_num demod)
472{
473 int timingLock = FALSE;
474 s32 i,
475 timingcpt = 0;
476 u8 car_freq,
477 tmg_th_high,
478 tmg_th_low;
479
480 car_freq = stv0900_read_reg(intp, CARFREQ);
481 tmg_th_high = stv0900_read_reg(intp, TMGTHRISE);
482 tmg_th_low = stv0900_read_reg(intp, TMGTHFALL);
483 stv0900_write_reg(intp, TMGTHRISE, 0x20);
484 stv0900_write_reg(intp, TMGTHFALL, 0x0);
485 stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
486 stv0900_write_reg(intp, RTC, 0x80);
487 stv0900_write_reg(intp, RTCS2, 0x40);
488 stv0900_write_reg(intp, CARFREQ, 0x0);
489 stv0900_write_reg(intp, CFRINIT1, 0x0);
490 stv0900_write_reg(intp, CFRINIT0, 0x0);
491 stv0900_write_reg(intp, AGC2REF, 0x65);
492 stv0900_write_reg(intp, DMDISTATE, 0x18);
493 msleep(7);
494
495 for (i = 0; i < 10; i++) {
496 if (stv0900_get_bits(intp, TMGLOCK_QUALITY) >= 2)
497 timingcpt++;
498
499 msleep(1);
500 }
501
502 if (timingcpt >= 3)
503 timingLock = TRUE;
504
505 stv0900_write_reg(intp, AGC2REF, 0x38);
506 stv0900_write_reg(intp, RTC, 0x88);
507 stv0900_write_reg(intp, RTCS2, 0x68);
508 stv0900_write_reg(intp, CARFREQ, car_freq);
509 stv0900_write_reg(intp, TMGTHRISE, tmg_th_high);
510 stv0900_write_reg(intp, TMGTHFALL, tmg_th_low);
511
512 return timingLock;
513}
514
515static int stv0900_get_demod_cold_lock(struct dvb_frontend *fe,
516 s32 demod_timeout)
517{
518 struct stv0900_state *state = fe->demodulator_priv;
519 struct stv0900_internal *intp = state->internal;
520 enum fe_stv0900_demod_num demod = state->demod;
521 int lock = FALSE,
522 d = demod;
523 s32 srate,
524 search_range,
525 locktimeout,
526 currier_step,
527 nb_steps,
528 current_step,
529 direction,
530 tuner_freq,
531 timeout,
532 freq;
533
534 srate = intp->symbol_rate[d];
535 search_range = intp->srch_range[d];
536
537 if (srate >= 10000000)
538 locktimeout = demod_timeout / 3;
539 else
540 locktimeout = demod_timeout / 2;
541
542 lock = stv0900_get_demod_lock(intp, d, locktimeout);
543
544 if (lock != FALSE)
545 return lock;
546
547 if (srate >= 10000000) {
548 if (stv0900_check_timing_lock(intp, d) == TRUE) {
549 stv0900_write_reg(intp, DMDISTATE, 0x1f);
550 stv0900_write_reg(intp, DMDISTATE, 0x15);
551 lock = stv0900_get_demod_lock(intp, d, demod_timeout);
552 } else
553 lock = FALSE;
554
555 return lock;
556 }
557
558 if (intp->chip_id <= 0x20) {
559 if (srate <= 1000000)
560 currier_step = 500;
561 else if (srate <= 4000000)
562 currier_step = 1000;
563 else if (srate <= 7000000)
564 currier_step = 2000;
565 else if (srate <= 10000000)
566 currier_step = 3000;
567 else
568 currier_step = 5000;
569
570 if (srate >= 2000000) {
571 timeout = (demod_timeout / 3);
572 if (timeout > 1000)
573 timeout = 1000;
574 } else
575 timeout = (demod_timeout / 2);
576 } else {
577
578 currier_step = srate / 4000;
579 timeout = (demod_timeout * 3) / 4;
580 }
581
582 nb_steps = ((search_range / 1000) / currier_step);
583
584 if ((nb_steps % 2) != 0)
585 nb_steps += 1;
586
587 if (nb_steps <= 0)
588 nb_steps = 2;
589 else if (nb_steps > 12)
590 nb_steps = 12;
591
592 current_step = 1;
593 direction = 1;
594
595 if (intp->chip_id <= 0x20) {
596 tuner_freq = intp->freq[d];
597 intp->bw[d] = stv0900_carrier_width(intp->symbol_rate[d],
598 intp->rolloff) + intp->symbol_rate[d];
599 } else
600 tuner_freq = 0;
601
602 while ((current_step <= nb_steps) && (lock == FALSE)) {
603 if (direction > 0)
604 tuner_freq += (current_step * currier_step);
605 else
606 tuner_freq -= (current_step * currier_step);
607
608 if (intp->chip_id <= 0x20) {
609 if (intp->tuner_type[d] == 3)
610 stv0900_set_tuner_auto(intp, tuner_freq,
611 intp->bw[d], demod);
612 else
613 stv0900_set_tuner(fe, tuner_freq, intp->bw[d]);
614
615 stv0900_write_reg(intp, DMDISTATE, 0x1c);
616 stv0900_write_reg(intp, CFRINIT1, 0);
617 stv0900_write_reg(intp, CFRINIT0, 0);
618 stv0900_write_reg(intp, DMDISTATE, 0x1f);
619 stv0900_write_reg(intp, DMDISTATE, 0x15);
620 } else {
621 stv0900_write_reg(intp, DMDISTATE, 0x1c);
622 freq = (tuner_freq * 65536) / (intp->mclk / 1000);
623 stv0900_write_bits(intp, CFR_INIT1, MSB(freq));
624 stv0900_write_bits(intp, CFR_INIT0, LSB(freq));
625 stv0900_write_reg(intp, DMDISTATE, 0x1f);
626 stv0900_write_reg(intp, DMDISTATE, 0x05);
627 }
628
629 lock = stv0900_get_demod_lock(intp, d, timeout);
630 direction *= -1;
631 current_step++;
632 }
633
634 return lock;
635}
636
637static void stv0900_get_lock_timeout(s32 *demod_timeout, s32 *fec_timeout,
638 s32 srate,
639 enum fe_stv0900_search_algo algo)
640{
641 switch (algo) {
642 case STV0900_BLIND_SEARCH:
643 if (srate <= 1500000) {
644 (*demod_timeout) = 1500;
645 (*fec_timeout) = 400;
646 } else if (srate <= 5000000) {
647 (*demod_timeout) = 1000;
648 (*fec_timeout) = 300;
649 } else {
650 (*demod_timeout) = 700;
651 (*fec_timeout) = 100;
652 }
653
654 break;
655 case STV0900_COLD_START:
656 case STV0900_WARM_START:
657 default:
658 if (srate <= 1000000) {
659 (*demod_timeout) = 3000;
660 (*fec_timeout) = 1700;
661 } else if (srate <= 2000000) {
662 (*demod_timeout) = 2500;
663 (*fec_timeout) = 1100;
664 } else if (srate <= 5000000) {
665 (*demod_timeout) = 1000;
666 (*fec_timeout) = 550;
667 } else if (srate <= 10000000) {
668 (*demod_timeout) = 700;
669 (*fec_timeout) = 250;
670 } else if (srate <= 20000000) {
671 (*demod_timeout) = 400;
672 (*fec_timeout) = 130;
673 } else {
674 (*demod_timeout) = 300;
675 (*fec_timeout) = 100;
676 }
677
678 break;
679
680 }
681
682 if (algo == STV0900_WARM_START)
683 (*demod_timeout) /= 2;
684}
685
686static void stv0900_set_viterbi_tracq(struct stv0900_internal *intp,
687 enum fe_stv0900_demod_num demod)
688{
689
690 s32 vth_reg = VTH12;
691
692 dprintk("%s\n", __func__);
693
694 stv0900_write_reg(intp, vth_reg++, 0xd0);
695 stv0900_write_reg(intp, vth_reg++, 0x7d);
696 stv0900_write_reg(intp, vth_reg++, 0x53);
697 stv0900_write_reg(intp, vth_reg++, 0x2f);
698 stv0900_write_reg(intp, vth_reg++, 0x24);
699 stv0900_write_reg(intp, vth_reg++, 0x1f);
700}
701
702static void stv0900_set_viterbi_standard(struct stv0900_internal *intp,
703 enum fe_stv0900_search_standard standard,
704 enum fe_stv0900_fec fec,
705 enum fe_stv0900_demod_num demod)
706{
707 dprintk("%s: ViterbiStandard = ", __func__);
708
709 switch (standard) {
710 case STV0900_AUTO_SEARCH:
711 dprintk("Auto\n");
712 stv0900_write_reg(intp, FECM, 0x10);
713 stv0900_write_reg(intp, PRVIT, 0x3f);
714 break;
715 case STV0900_SEARCH_DVBS1:
716 dprintk("DVBS1\n");
717 stv0900_write_reg(intp, FECM, 0x00);
718 switch (fec) {
719 case STV0900_FEC_UNKNOWN:
720 default:
721 stv0900_write_reg(intp, PRVIT, 0x2f);
722 break;
723 case STV0900_FEC_1_2:
724 stv0900_write_reg(intp, PRVIT, 0x01);
725 break;
726 case STV0900_FEC_2_3:
727 stv0900_write_reg(intp, PRVIT, 0x02);
728 break;
729 case STV0900_FEC_3_4:
730 stv0900_write_reg(intp, PRVIT, 0x04);
731 break;
732 case STV0900_FEC_5_6:
733 stv0900_write_reg(intp, PRVIT, 0x08);
734 break;
735 case STV0900_FEC_7_8:
736 stv0900_write_reg(intp, PRVIT, 0x20);
737 break;
738 }
739
740 break;
741 case STV0900_SEARCH_DSS:
742 dprintk("DSS\n");
743 stv0900_write_reg(intp, FECM, 0x80);
744 switch (fec) {
745 case STV0900_FEC_UNKNOWN:
746 default:
747 stv0900_write_reg(intp, PRVIT, 0x13);
748 break;
749 case STV0900_FEC_1_2:
750 stv0900_write_reg(intp, PRVIT, 0x01);
751 break;
752 case STV0900_FEC_2_3:
753 stv0900_write_reg(intp, PRVIT, 0x02);
754 break;
755 case STV0900_FEC_6_7:
756 stv0900_write_reg(intp, PRVIT, 0x10);
757 break;
758 }
759 break;
760 default:
761 break;
762 }
763}
764
765static enum fe_stv0900_fec stv0900_get_vit_fec(struct stv0900_internal *intp,
766 enum fe_stv0900_demod_num demod)
767{
768 enum fe_stv0900_fec prate;
769 s32 rate_fld = stv0900_get_bits(intp, VIT_CURPUN);
770
771 switch (rate_fld) {
772 case 13:
773 prate = STV0900_FEC_1_2;
774 break;
775 case 18:
776 prate = STV0900_FEC_2_3;
777 break;
778 case 21:
779 prate = STV0900_FEC_3_4;
780 break;
781 case 24:
782 prate = STV0900_FEC_5_6;
783 break;
784 case 25:
785 prate = STV0900_FEC_6_7;
786 break;
787 case 26:
788 prate = STV0900_FEC_7_8;
789 break;
790 default:
791 prate = STV0900_FEC_UNKNOWN;
792 break;
793 }
794
795 return prate;
796}
797
798static void stv0900_set_dvbs1_track_car_loop(struct stv0900_internal *intp,
799 enum fe_stv0900_demod_num demod,
800 u32 srate)
801{
802 if (intp->chip_id >= 0x30) {
803 if (srate >= 15000000) {
804 stv0900_write_reg(intp, ACLC, 0x2b);
805 stv0900_write_reg(intp, BCLC, 0x1a);
806 } else if ((srate >= 7000000) && (15000000 > srate)) {
807 stv0900_write_reg(intp, ACLC, 0x0c);
808 stv0900_write_reg(intp, BCLC, 0x1b);
809 } else if (srate < 7000000) {
810 stv0900_write_reg(intp, ACLC, 0x2c);
811 stv0900_write_reg(intp, BCLC, 0x1c);
812 }
813
814 } else {
815 stv0900_write_reg(intp, ACLC, 0x1a);
816 stv0900_write_reg(intp, BCLC, 0x09);
817 }
818
819}
820
821static void stv0900_track_optimization(struct dvb_frontend *fe)
822{
823 struct stv0900_state *state = fe->demodulator_priv;
824 struct stv0900_internal *intp = state->internal;
825 enum fe_stv0900_demod_num demod = state->demod;
826
827 s32 srate,
828 pilots,
829 aclc,
830 freq1,
831 freq0,
832 i = 0,
833 timed,
834 timef,
835 blind_tun_sw = 0,
836 modulation;
837
838 enum fe_stv0900_modcode foundModcod;
839
840 dprintk("%s\n", __func__);
841
842 srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
843 srate += stv0900_get_timing_offst(intp, srate, demod);
844
845 switch (intp->result[demod].standard) {
846 case STV0900_DVBS1_STANDARD:
847 case STV0900_DSS_STANDARD:
848 dprintk("%s: found DVB-S or DSS\n", __func__);
849 if (intp->srch_standard[demod] == STV0900_AUTO_SEARCH) {
850 stv0900_write_bits(intp, DVBS1_ENABLE, 1);
851 stv0900_write_bits(intp, DVBS2_ENABLE, 0);
852 }
853
854 stv0900_write_bits(intp, ROLLOFF_CONTROL, intp->rolloff);
855 stv0900_write_bits(intp, MANUALSX_ROLLOFF, 1);
856
857 if (intp->chip_id < 0x30) {
858 stv0900_write_reg(intp, ERRCTRL1, 0x75);
859 break;
860 }
861
862 if (stv0900_get_vit_fec(intp, demod) == STV0900_FEC_1_2) {
863 stv0900_write_reg(intp, GAUSSR0, 0x98);
864 stv0900_write_reg(intp, CCIR0, 0x18);
865 } else {
866 stv0900_write_reg(intp, GAUSSR0, 0x18);
867 stv0900_write_reg(intp, CCIR0, 0x18);
868 }
869
870 stv0900_write_reg(intp, ERRCTRL1, 0x75);
871 break;
872 case STV0900_DVBS2_STANDARD:
873 dprintk("%s: found DVB-S2\n", __func__);
874 stv0900_write_bits(intp, DVBS1_ENABLE, 0);
875 stv0900_write_bits(intp, DVBS2_ENABLE, 1);
876 stv0900_write_reg(intp, ACLC, 0);
877 stv0900_write_reg(intp, BCLC, 0);
878 if (intp->result[demod].frame_len == STV0900_LONG_FRAME) {
879 foundModcod = stv0900_get_bits(intp, DEMOD_MODCOD);
880 pilots = stv0900_get_bits(intp, DEMOD_TYPE) & 0x01;
881 aclc = stv0900_get_optim_carr_loop(srate,
882 foundModcod,
883 pilots,
884 intp->chip_id);
885 if (foundModcod <= STV0900_QPSK_910)
886 stv0900_write_reg(intp, ACLC2S2Q, aclc);
887 else if (foundModcod <= STV0900_8PSK_910) {
888 stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
889 stv0900_write_reg(intp, ACLC2S28, aclc);
890 }
891
892 if ((intp->demod_mode == STV0900_SINGLE) &&
893 (foundModcod > STV0900_8PSK_910)) {
894 if (foundModcod <= STV0900_16APSK_910) {
895 stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
896 stv0900_write_reg(intp, ACLC2S216A,
897 aclc);
898 } else if (foundModcod <= STV0900_32APSK_910) {
899 stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
900 stv0900_write_reg(intp, ACLC2S232A,
901 aclc);
902 }
903 }
904
905 } else {
906 modulation = intp->result[demod].modulation;
907 aclc = stv0900_get_optim_short_carr_loop(srate,
908 modulation, intp->chip_id);
909 if (modulation == STV0900_QPSK)
910 stv0900_write_reg(intp, ACLC2S2Q, aclc);
911 else if (modulation == STV0900_8PSK) {
912 stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
913 stv0900_write_reg(intp, ACLC2S28, aclc);
914 } else if (modulation == STV0900_16APSK) {
915 stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
916 stv0900_write_reg(intp, ACLC2S216A, aclc);
917 } else if (modulation == STV0900_32APSK) {
918 stv0900_write_reg(intp, ACLC2S2Q, 0x2a);
919 stv0900_write_reg(intp, ACLC2S232A, aclc);
920 }
921
922 }
923
924 if (intp->chip_id <= 0x11) {
925 if (intp->demod_mode != STV0900_SINGLE)
926 stv0900_activate_s2_modcod(intp, demod);
927
928 }
929
930 stv0900_write_reg(intp, ERRCTRL1, 0x67);
931 break;
932 case STV0900_UNKNOWN_STANDARD:
933 default:
934 dprintk("%s: found unknown standard\n", __func__);
935 stv0900_write_bits(intp, DVBS1_ENABLE, 1);
936 stv0900_write_bits(intp, DVBS2_ENABLE, 1);
937 break;
938 }
939
940 freq1 = stv0900_read_reg(intp, CFR2);
941 freq0 = stv0900_read_reg(intp, CFR1);
942 if (intp->srch_algo[demod] == STV0900_BLIND_SEARCH) {
943 stv0900_write_reg(intp, SFRSTEP, 0x00);
944 stv0900_write_bits(intp, SCAN_ENABLE, 0);
945 stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
946 stv0900_write_reg(intp, TMGCFG2, 0xc1);
947 stv0900_set_symbol_rate(intp, intp->mclk, srate, demod);
948 blind_tun_sw = 1;
949 if (intp->result[demod].standard != STV0900_DVBS2_STANDARD)
950 stv0900_set_dvbs1_track_car_loop(intp, demod, srate);
951
952 }
953
954 if (intp->chip_id >= 0x20) {
955 if ((intp->srch_standard[demod] == STV0900_SEARCH_DVBS1) ||
956 (intp->srch_standard[demod] ==
957 STV0900_SEARCH_DSS) ||
958 (intp->srch_standard[demod] ==
959 STV0900_AUTO_SEARCH)) {
960 stv0900_write_reg(intp, VAVSRVIT, 0x0a);
961 stv0900_write_reg(intp, VITSCALE, 0x0);
962 }
963 }
964
965 if (intp->chip_id < 0x20)
966 stv0900_write_reg(intp, CARHDR, 0x08);
967
968 if (intp->chip_id == 0x10)
969 stv0900_write_reg(intp, CORRELEXP, 0x0a);
970
971 stv0900_write_reg(intp, AGC2REF, 0x38);
972
973 if ((intp->chip_id >= 0x20) ||
974 (blind_tun_sw == 1) ||
975 (intp->symbol_rate[demod] < 10000000)) {
976 stv0900_write_reg(intp, CFRINIT1, freq1);
977 stv0900_write_reg(intp, CFRINIT0, freq0);
978 intp->bw[demod] = stv0900_carrier_width(srate,
979 intp->rolloff) + 10000000;
980
981 if ((intp->chip_id >= 0x20) || (blind_tun_sw == 1)) {
982 if (intp->srch_algo[demod] != STV0900_WARM_START) {
983 if (intp->tuner_type[demod] == 3)
984 stv0900_set_tuner_auto(intp,
985 intp->freq[demod],
986 intp->bw[demod],
987 demod);
988 else
989 stv0900_set_bandwidth(fe,
990 intp->bw[demod]);
991 }
992 }
993
994 if ((intp->srch_algo[demod] == STV0900_BLIND_SEARCH) ||
995 (intp->symbol_rate[demod] < 10000000))
996 msleep(50);
997 else
998 msleep(5);
999
1000 stv0900_get_lock_timeout(&timed, &timef, srate,
1001 STV0900_WARM_START);
1002
1003 if (stv0900_get_demod_lock(intp, demod, timed / 2) == FALSE) {
1004 stv0900_write_reg(intp, DMDISTATE, 0x1f);
1005 stv0900_write_reg(intp, CFRINIT1, freq1);
1006 stv0900_write_reg(intp, CFRINIT0, freq0);
1007 stv0900_write_reg(intp, DMDISTATE, 0x18);
1008 i = 0;
1009 while ((stv0900_get_demod_lock(intp,
1010 demod,
1011 timed / 2) == FALSE) &&
1012 (i <= 2)) {
1013 stv0900_write_reg(intp, DMDISTATE, 0x1f);
1014 stv0900_write_reg(intp, CFRINIT1, freq1);
1015 stv0900_write_reg(intp, CFRINIT0, freq0);
1016 stv0900_write_reg(intp, DMDISTATE, 0x18);
1017 i++;
1018 }
1019 }
1020
1021 }
1022
1023 if (intp->chip_id >= 0x20)
1024 stv0900_write_reg(intp, CARFREQ, 0x49);
1025
1026 if ((intp->result[demod].standard == STV0900_DVBS1_STANDARD) ||
1027 (intp->result[demod].standard == STV0900_DSS_STANDARD))
1028 stv0900_set_viterbi_tracq(intp, demod);
1029
1030}
1031
1032static int stv0900_get_fec_lock(struct stv0900_internal *intp,
1033 enum fe_stv0900_demod_num demod, s32 time_out)
1034{
1035 s32 timer = 0, lock = 0;
1036
1037 enum fe_stv0900_search_state dmd_state;
1038
1039 dprintk("%s\n", __func__);
1040
1041 dmd_state = stv0900_get_bits(intp, HEADER_MODE);
1042
1043 while ((timer < time_out) && (lock == 0)) {
1044 switch (dmd_state) {
1045 case STV0900_SEARCH:
1046 case STV0900_PLH_DETECTED:
1047 default:
1048 lock = 0;
1049 break;
1050 case STV0900_DVBS2_FOUND:
1051 lock = stv0900_get_bits(intp, PKTDELIN_LOCK);
1052 break;
1053 case STV0900_DVBS_FOUND:
1054 lock = stv0900_get_bits(intp, LOCKEDVIT);
1055 break;
1056 }
1057
1058 if (lock == 0) {
1059 msleep(10);
1060 timer += 10;
1061 }
1062 }
1063
1064 if (lock)
1065 dprintk("%s: DEMOD FEC LOCK OK\n", __func__);
1066 else
1067 dprintk("%s: DEMOD FEC LOCK FAIL\n", __func__);
1068
1069 return lock;
1070}
1071
1072static int stv0900_wait_for_lock(struct stv0900_internal *intp,
1073 enum fe_stv0900_demod_num demod,
1074 s32 dmd_timeout, s32 fec_timeout)
1075{
1076
1077 s32 timer = 0, lock = 0;
1078
1079 dprintk("%s\n", __func__);
1080
1081 lock = stv0900_get_demod_lock(intp, demod, dmd_timeout);
1082
1083 if (lock)
1084 lock = stv0900_get_fec_lock(intp, demod, fec_timeout);
1085
1086 if (lock) {
1087 lock = 0;
1088
1089 dprintk("%s: Timer = %d, time_out = %d\n",
1090 __func__, timer, fec_timeout);
1091
1092 while ((timer < fec_timeout) && (lock == 0)) {
1093 lock = stv0900_get_bits(intp, TSFIFO_LINEOK);
1094 msleep(1);
1095 timer++;
1096 }
1097 }
1098
1099 if (lock)
1100 dprintk("%s: DEMOD LOCK OK\n", __func__);
1101 else
1102 dprintk("%s: DEMOD LOCK FAIL\n", __func__);
1103
1104 if (lock)
1105 return TRUE;
1106 else
1107 return FALSE;
1108}
1109
1110enum fe_stv0900_tracking_standard stv0900_get_standard(struct dvb_frontend *fe,
1111 enum fe_stv0900_demod_num demod)
1112{
1113 struct stv0900_state *state = fe->demodulator_priv;
1114 struct stv0900_internal *intp = state->internal;
1115 enum fe_stv0900_tracking_standard fnd_standard;
1116
1117 int hdr_mode = stv0900_get_bits(intp, HEADER_MODE);
1118
1119 switch (hdr_mode) {
1120 case 2:
1121 fnd_standard = STV0900_DVBS2_STANDARD;
1122 break;
1123 case 3:
1124 if (stv0900_get_bits(intp, DSS_DVB) == 1)
1125 fnd_standard = STV0900_DSS_STANDARD;
1126 else
1127 fnd_standard = STV0900_DVBS1_STANDARD;
1128
1129 break;
1130 default:
1131 fnd_standard = STV0900_UNKNOWN_STANDARD;
1132 }
1133
1134 dprintk("%s: standard %d\n", __func__, fnd_standard);
1135
1136 return fnd_standard;
1137}
1138
1139static s32 stv0900_get_carr_freq(struct stv0900_internal *intp, u32 mclk,
1140 enum fe_stv0900_demod_num demod)
1141{
1142 s32 derot,
1143 rem1,
1144 rem2,
1145 intval1,
1146 intval2;
1147
1148 derot = (stv0900_get_bits(intp, CAR_FREQ2) << 16) +
1149 (stv0900_get_bits(intp, CAR_FREQ1) << 8) +
1150 (stv0900_get_bits(intp, CAR_FREQ0));
1151
1152 derot = ge2comp(derot, 24);
1153 intval1 = mclk >> 12;
1154 intval2 = derot >> 12;
1155 rem1 = mclk % 0x1000;
1156 rem2 = derot % 0x1000;
1157 derot = (intval1 * intval2) +
1158 ((intval1 * rem2) >> 12) +
1159 ((intval2 * rem1) >> 12);
1160
1161 return derot;
1162}
1163
1164static u32 stv0900_get_tuner_freq(struct dvb_frontend *fe)
1165{
1166 struct dvb_frontend_ops *frontend_ops = NULL;
1167 struct dvb_tuner_ops *tuner_ops = NULL;
1168 u32 freq = 0;
1169
1170 frontend_ops = &fe->ops;
1171 tuner_ops = &frontend_ops->tuner_ops;
1172
1173 if (tuner_ops->get_frequency) {
1174 if ((tuner_ops->get_frequency(fe, &freq)) < 0)
1175 dprintk("%s: Invalid parameter\n", __func__);
1176 else
1177 dprintk("%s: Frequency=%d\n", __func__, freq);
1178
1179 }
1180
1181 return freq;
1182}
1183
1184static enum
1185fe_stv0900_signal_type stv0900_get_signal_params(struct dvb_frontend *fe)
1186{
1187 struct stv0900_state *state = fe->demodulator_priv;
1188 struct stv0900_internal *intp = state->internal;
1189 enum fe_stv0900_demod_num demod = state->demod;
1190 enum fe_stv0900_signal_type range = STV0900_OUTOFRANGE;
1191 struct stv0900_signal_info *result = &intp->result[demod];
1192 s32 offsetFreq,
1193 srate_offset;
1194 int i = 0,
1195 d = demod;
1196
1197 u8 timing;
1198
1199 msleep(5);
1200 if (intp->srch_algo[d] == STV0900_BLIND_SEARCH) {
1201 timing = stv0900_read_reg(intp, TMGREG2);
1202 i = 0;
1203 stv0900_write_reg(intp, SFRSTEP, 0x5c);
1204
1205 while ((i <= 50) && (timing != 0) && (timing != 0xff)) {
1206 timing = stv0900_read_reg(intp, TMGREG2);
1207 msleep(5);
1208 i += 5;
1209 }
1210 }
1211
1212 result->standard = stv0900_get_standard(fe, d);
1213 if (intp->tuner_type[demod] == 3)
1214 result->frequency = stv0900_get_freq_auto(intp, d);
1215 else
1216 result->frequency = stv0900_get_tuner_freq(fe);
1217
1218 offsetFreq = stv0900_get_carr_freq(intp, intp->mclk, d) / 1000;
1219 result->frequency += offsetFreq;
1220 result->symbol_rate = stv0900_get_symbol_rate(intp, intp->mclk, d);
1221 srate_offset = stv0900_get_timing_offst(intp, result->symbol_rate, d);
1222 result->symbol_rate += srate_offset;
1223 result->fec = stv0900_get_vit_fec(intp, d);
1224 result->modcode = stv0900_get_bits(intp, DEMOD_MODCOD);
1225 result->pilot = stv0900_get_bits(intp, DEMOD_TYPE) & 0x01;
1226 result->frame_len = ((u32)stv0900_get_bits(intp, DEMOD_TYPE)) >> 1;
1227 result->rolloff = stv0900_get_bits(intp, ROLLOFF_STATUS);
1228
1229 dprintk("%s: modcode=0x%x \n", __func__, result->modcode);
1230
1231 switch (result->standard) {
1232 case STV0900_DVBS2_STANDARD:
1233 result->spectrum = stv0900_get_bits(intp, SPECINV_DEMOD);
1234 if (result->modcode <= STV0900_QPSK_910)
1235 result->modulation = STV0900_QPSK;
1236 else if (result->modcode <= STV0900_8PSK_910)
1237 result->modulation = STV0900_8PSK;
1238 else if (result->modcode <= STV0900_16APSK_910)
1239 result->modulation = STV0900_16APSK;
1240 else if (result->modcode <= STV0900_32APSK_910)
1241 result->modulation = STV0900_32APSK;
1242 else
1243 result->modulation = STV0900_UNKNOWN;
1244 break;
1245 case STV0900_DVBS1_STANDARD:
1246 case STV0900_DSS_STANDARD:
1247 result->spectrum = stv0900_get_bits(intp, IQINV);
1248 result->modulation = STV0900_QPSK;
1249 break;
1250 default:
1251 break;
1252 }
1253
1254 if ((intp->srch_algo[d] == STV0900_BLIND_SEARCH) ||
1255 (intp->symbol_rate[d] < 10000000)) {
1256 offsetFreq = result->frequency - intp->freq[d];
1257 if (intp->tuner_type[demod] == 3)
1258 intp->freq[d] = stv0900_get_freq_auto(intp, d);
1259 else
1260 intp->freq[d] = stv0900_get_tuner_freq(fe);
1261
1262 if (ABS(offsetFreq) <= ((intp->srch_range[d] / 2000) + 500))
1263 range = STV0900_RANGEOK;
1264 else if (ABS(offsetFreq) <=
1265 (stv0900_carrier_width(result->symbol_rate,
1266 result->rolloff) / 2000))
1267 range = STV0900_RANGEOK;
1268
1269 } else if (ABS(offsetFreq) <= ((intp->srch_range[d] / 2000) + 500))
1270 range = STV0900_RANGEOK;
1271
1272 dprintk("%s: range %d\n", __func__, range);
1273
1274 return range;
1275}
1276
1277static enum
1278fe_stv0900_signal_type stv0900_dvbs1_acq_workaround(struct dvb_frontend *fe)
1279{
1280 struct stv0900_state *state = fe->demodulator_priv;
1281 struct stv0900_internal *intp = state->internal;
1282 enum fe_stv0900_demod_num demod = state->demod;
1283 enum fe_stv0900_signal_type signal_type = STV0900_NODATA;
1284
1285 s32 srate,
1286 demod_timeout,
1287 fec_timeout,
1288 freq1,
1289 freq0;
1290
1291 intp->result[demod].locked = FALSE;
1292
1293 if (stv0900_get_bits(intp, HEADER_MODE) == STV0900_DVBS_FOUND) {
1294 srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
1295 srate += stv0900_get_timing_offst(intp, srate, demod);
1296 if (intp->srch_algo[demod] == STV0900_BLIND_SEARCH)
1297 stv0900_set_symbol_rate(intp, intp->mclk, srate, demod);
1298
1299 stv0900_get_lock_timeout(&demod_timeout, &fec_timeout,
1300 srate, STV0900_WARM_START);
1301 freq1 = stv0900_read_reg(intp, CFR2);
1302 freq0 = stv0900_read_reg(intp, CFR1);
1303 stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
1304 stv0900_write_bits(intp, SPECINV_CONTROL,
1305 STV0900_IQ_FORCE_SWAPPED);
1306 stv0900_write_reg(intp, DMDISTATE, 0x1c);
1307 stv0900_write_reg(intp, CFRINIT1, freq1);
1308 stv0900_write_reg(intp, CFRINIT0, freq0);
1309 stv0900_write_reg(intp, DMDISTATE, 0x18);
1310 if (stv0900_wait_for_lock(intp, demod,
1311 demod_timeout, fec_timeout) == TRUE) {
1312 intp->result[demod].locked = TRUE;
1313 signal_type = stv0900_get_signal_params(fe);
1314 stv0900_track_optimization(fe);
1315 } else {
1316 stv0900_write_bits(intp, SPECINV_CONTROL,
1317 STV0900_IQ_FORCE_NORMAL);
1318 stv0900_write_reg(intp, DMDISTATE, 0x1c);
1319 stv0900_write_reg(intp, CFRINIT1, freq1);
1320 stv0900_write_reg(intp, CFRINIT0, freq0);
1321 stv0900_write_reg(intp, DMDISTATE, 0x18);
1322 if (stv0900_wait_for_lock(intp, demod,
1323 demod_timeout, fec_timeout) == TRUE) {
1324 intp->result[demod].locked = TRUE;
1325 signal_type = stv0900_get_signal_params(fe);
1326 stv0900_track_optimization(fe);
1327 }
1328
1329 }
1330
1331 } else
1332 intp->result[demod].locked = FALSE;
1333
1334 return signal_type;
1335}
1336
1337static u16 stv0900_blind_check_agc2_min_level(struct stv0900_internal *intp,
1338 enum fe_stv0900_demod_num demod)
1339{
1340 u32 minagc2level = 0xffff,
1341 agc2level,
1342 init_freq, freq_step;
1343
1344 s32 i, j, nb_steps, direction;
1345
1346 dprintk("%s\n", __func__);
1347
1348 stv0900_write_reg(intp, AGC2REF, 0x38);
1349 stv0900_write_bits(intp, SCAN_ENABLE, 0);
1350 stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
1351
1352 stv0900_write_bits(intp, AUTO_GUP, 1);
1353 stv0900_write_bits(intp, AUTO_GLOW, 1);
1354
1355 stv0900_write_reg(intp, DMDT0M, 0x0);
1356
1357 stv0900_set_symbol_rate(intp, intp->mclk, 1000000, demod);
1358 nb_steps = -1 + (intp->srch_range[demod] / 1000000);
1359 nb_steps /= 2;
1360 nb_steps = (2 * nb_steps) + 1;
1361
1362 if (nb_steps < 0)
1363 nb_steps = 1;
1364
1365 direction = 1;
1366
1367 freq_step = (1000000 << 8) / (intp->mclk >> 8);
1368
1369 init_freq = 0;
1370
1371 for (i = 0; i < nb_steps; i++) {
1372 if (direction > 0)
1373 init_freq = init_freq + (freq_step * i);
1374 else
1375 init_freq = init_freq - (freq_step * i);
1376
1377 direction *= -1;
1378 stv0900_write_reg(intp, DMDISTATE, 0x5C);
1379 stv0900_write_reg(intp, CFRINIT1, (init_freq >> 8) & 0xff);
1380 stv0900_write_reg(intp, CFRINIT0, init_freq & 0xff);
1381 stv0900_write_reg(intp, DMDISTATE, 0x58);
1382 msleep(10);
1383 agc2level = 0;
1384
1385 for (j = 0; j < 10; j++)
1386 agc2level += (stv0900_read_reg(intp, AGC2I1) << 8)
1387 | stv0900_read_reg(intp, AGC2I0);
1388
1389 agc2level /= 10;
1390
1391 if (agc2level < minagc2level)
1392 minagc2level = agc2level;
1393
1394 }
1395
1396 return (u16)minagc2level;
1397}
1398
1399static u32 stv0900_search_srate_coarse(struct dvb_frontend *fe)
1400{
1401 struct stv0900_state *state = fe->demodulator_priv;
1402 struct stv0900_internal *intp = state->internal;
1403 enum fe_stv0900_demod_num demod = state->demod;
1404 int timing_lck = FALSE;
1405 s32 i, timingcpt = 0,
1406 direction = 1,
1407 nb_steps,
1408 current_step = 0,
1409 tuner_freq;
1410 u32 agc2_th,
1411 coarse_srate = 0,
1412 agc2_integr = 0,
1413 currier_step = 1200;
1414
1415 if (intp->chip_id >= 0x30)
1416 agc2_th = 0x2e00;
1417 else
1418 agc2_th = 0x1f00;
1419
1420 stv0900_write_bits(intp, DEMOD_MODE, 0x1f);
1421 stv0900_write_reg(intp, TMGCFG, 0x12);
1422 stv0900_write_reg(intp, TMGTHRISE, 0xf0);
1423 stv0900_write_reg(intp, TMGTHFALL, 0xe0);
1424 stv0900_write_bits(intp, SCAN_ENABLE, 1);
1425 stv0900_write_bits(intp, CFR_AUTOSCAN, 1);
1426 stv0900_write_reg(intp, SFRUP1, 0x83);
1427 stv0900_write_reg(intp, SFRUP0, 0xc0);
1428 stv0900_write_reg(intp, SFRLOW1, 0x82);
1429 stv0900_write_reg(intp, SFRLOW0, 0xa0);
1430 stv0900_write_reg(intp, DMDT0M, 0x0);
1431 stv0900_write_reg(intp, AGC2REF, 0x50);
1432
1433 if (intp->chip_id >= 0x30) {
1434 stv0900_write_reg(intp, CARFREQ, 0x99);
1435 stv0900_write_reg(intp, SFRSTEP, 0x98);
1436 } else if (intp->chip_id >= 0x20) {
1437 stv0900_write_reg(intp, CARFREQ, 0x6a);
1438 stv0900_write_reg(intp, SFRSTEP, 0x95);
1439 } else {
1440 stv0900_write_reg(intp, CARFREQ, 0xed);
1441 stv0900_write_reg(intp, SFRSTEP, 0x73);
1442 }
1443
1444 if (intp->symbol_rate[demod] <= 2000000)
1445 currier_step = 1000;
1446 else if (intp->symbol_rate[demod] <= 5000000)
1447 currier_step = 2000;
1448 else if (intp->symbol_rate[demod] <= 12000000)
1449 currier_step = 3000;
1450 else
1451 currier_step = 5000;
1452
1453 nb_steps = -1 + ((intp->srch_range[demod] / 1000) / currier_step);
1454 nb_steps /= 2;
1455 nb_steps = (2 * nb_steps) + 1;
1456
1457 if (nb_steps < 0)
1458 nb_steps = 1;
1459 else if (nb_steps > 10) {
1460 nb_steps = 11;
1461 currier_step = (intp->srch_range[demod] / 1000) / 10;
1462 }
1463
1464 current_step = 0;
1465 direction = 1;
1466
1467 tuner_freq = intp->freq[demod];
1468
1469 while ((timing_lck == FALSE) && (current_step < nb_steps)) {
1470 stv0900_write_reg(intp, DMDISTATE, 0x5f);
1471 stv0900_write_bits(intp, DEMOD_MODE, 0);
1472
1473 msleep(50);
1474
1475 for (i = 0; i < 10; i++) {
1476 if (stv0900_get_bits(intp, TMGLOCK_QUALITY) >= 2)
1477 timingcpt++;
1478
1479 agc2_integr += (stv0900_read_reg(intp, AGC2I1) << 8) |
1480 stv0900_read_reg(intp, AGC2I0);
1481 }
1482
1483 agc2_integr /= 10;
1484 coarse_srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
1485 current_step++;
1486 direction *= -1;
1487
1488 dprintk("lock: I2C_DEMOD_MODE_FIELD =0. Search started."
1489 " tuner freq=%d agc2=0x%x srate_coarse=%d tmg_cpt=%d\n",
1490 tuner_freq, agc2_integr, coarse_srate, timingcpt);
1491
1492 if ((timingcpt >= 5) &&
1493 (agc2_integr < agc2_th) &&
1494 (coarse_srate < 55000000) &&
1495 (coarse_srate > 850000))
1496 timing_lck = TRUE;
1497 else if (current_step < nb_steps) {
1498 if (direction > 0)
1499 tuner_freq += (current_step * currier_step);
1500 else
1501 tuner_freq -= (current_step * currier_step);
1502
1503 if (intp->tuner_type[demod] == 3)
1504 stv0900_set_tuner_auto(intp, tuner_freq,
1505 intp->bw[demod], demod);
1506 else
1507 stv0900_set_tuner(fe, tuner_freq,
1508 intp->bw[demod]);
1509 }
1510 }
1511
1512 if (timing_lck == FALSE)
1513 coarse_srate = 0;
1514 else
1515 coarse_srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
1516
1517 return coarse_srate;
1518}
1519
1520static u32 stv0900_search_srate_fine(struct dvb_frontend *fe)
1521{
1522 struct stv0900_state *state = fe->demodulator_priv;
1523 struct stv0900_internal *intp = state->internal;
1524 enum fe_stv0900_demod_num demod = state->demod;
1525 u32 coarse_srate,
1526 coarse_freq,
1527 symb,
1528 symbmax,
1529 symbmin,
1530 symbcomp;
1531
1532 coarse_srate = stv0900_get_symbol_rate(intp, intp->mclk, demod);
1533
1534 if (coarse_srate > 3000000) {
1535 symbmax = 13 * (coarse_srate / 10);
1536 symbmax = (symbmax / 1000) * 65536;
1537 symbmax /= (intp->mclk / 1000);
1538
1539 symbmin = 10 * (coarse_srate / 13);
1540 symbmin = (symbmin / 1000)*65536;
1541 symbmin /= (intp->mclk / 1000);
1542
1543 symb = (coarse_srate / 1000) * 65536;
1544 symb /= (intp->mclk / 1000);
1545 } else {
1546 symbmax = 13 * (coarse_srate / 10);
1547 symbmax = (symbmax / 100) * 65536;
1548 symbmax /= (intp->mclk / 100);
1549
1550 symbmin = 10 * (coarse_srate / 14);
1551 symbmin = (symbmin / 100) * 65536;
1552 symbmin /= (intp->mclk / 100);
1553
1554 symb = (coarse_srate / 100) * 65536;
1555 symb /= (intp->mclk / 100);
1556 }
1557
1558 symbcomp = 13 * (coarse_srate / 10);
1559 coarse_freq = (stv0900_read_reg(intp, CFR2) << 8)
1560 | stv0900_read_reg(intp, CFR1);
1561
1562 if (symbcomp < intp->symbol_rate[demod])
1563 coarse_srate = 0;
1564 else {
1565 stv0900_write_reg(intp, DMDISTATE, 0x1f);
1566 stv0900_write_reg(intp, TMGCFG2, 0xc1);
1567 stv0900_write_reg(intp, TMGTHRISE, 0x20);
1568 stv0900_write_reg(intp, TMGTHFALL, 0x00);
1569 stv0900_write_reg(intp, TMGCFG, 0xd2);
1570 stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
1571 stv0900_write_reg(intp, AGC2REF, 0x38);
1572
1573 if (intp->chip_id >= 0x30)
1574 stv0900_write_reg(intp, CARFREQ, 0x79);
1575 else if (intp->chip_id >= 0x20)
1576 stv0900_write_reg(intp, CARFREQ, 0x49);
1577 else
1578 stv0900_write_reg(intp, CARFREQ, 0xed);
1579
1580 stv0900_write_reg(intp, SFRUP1, (symbmax >> 8) & 0x7f);
1581 stv0900_write_reg(intp, SFRUP0, (symbmax & 0xff));
1582
1583 stv0900_write_reg(intp, SFRLOW1, (symbmin >> 8) & 0x7f);
1584 stv0900_write_reg(intp, SFRLOW0, (symbmin & 0xff));
1585
1586 stv0900_write_reg(intp, SFRINIT1, (symb >> 8) & 0xff);
1587 stv0900_write_reg(intp, SFRINIT0, (symb & 0xff));
1588
1589 stv0900_write_reg(intp, DMDT0M, 0x20);
1590 stv0900_write_reg(intp, CFRINIT1, (coarse_freq >> 8) & 0xff);
1591 stv0900_write_reg(intp, CFRINIT0, coarse_freq & 0xff);
1592 stv0900_write_reg(intp, DMDISTATE, 0x15);
1593 }
1594
1595 return coarse_srate;
1596}
1597
1598static int stv0900_blind_search_algo(struct dvb_frontend *fe)
1599{
1600 struct stv0900_state *state = fe->demodulator_priv;
1601 struct stv0900_internal *intp = state->internal;
1602 enum fe_stv0900_demod_num demod = state->demod;
1603 u8 k_ref_tmg,
1604 k_ref_tmg_max,
1605 k_ref_tmg_min;
1606 u32 coarse_srate,
1607 agc2_th;
1608 int lock = FALSE,
1609 coarse_fail = FALSE;
1610 s32 demod_timeout = 500,
1611 fec_timeout = 50,
1612 fail_cpt,
1613 i,
1614 agc2_overflow;
1615 u16 agc2_int;
1616 u8 dstatus2;
1617
1618 dprintk("%s\n", __func__);
1619
1620 if (intp->chip_id < 0x20) {
1621 k_ref_tmg_max = 233;
1622 k_ref_tmg_min = 143;
1623 } else {
1624 k_ref_tmg_max = 110;
1625 k_ref_tmg_min = 10;
1626 }
1627
1628 if (intp->chip_id <= 0x20)
1629 agc2_th = STV0900_BLIND_SEARCH_AGC2_TH;
1630 else
1631 agc2_th = STV0900_BLIND_SEARCH_AGC2_TH_CUT30;
1632
1633 agc2_int = stv0900_blind_check_agc2_min_level(intp, demod);
1634
1635 dprintk("%s agc2_int=%d agc2_th=%d \n", __func__, agc2_int, agc2_th);
1636 if (agc2_int > agc2_th)
1637 return FALSE;
1638
1639 if (intp->chip_id == 0x10)
1640 stv0900_write_reg(intp, CORRELEXP, 0xaa);
1641
1642 if (intp->chip_id < 0x20)
1643 stv0900_write_reg(intp, CARHDR, 0x55);
1644 else
1645 stv0900_write_reg(intp, CARHDR, 0x20);
1646
1647 if (intp->chip_id <= 0x20)
1648 stv0900_write_reg(intp, CARCFG, 0xc4);
1649 else
1650 stv0900_write_reg(intp, CARCFG, 0x6);
1651
1652 stv0900_write_reg(intp, RTCS2, 0x44);
1653
1654 if (intp->chip_id >= 0x20) {
1655 stv0900_write_reg(intp, EQUALCFG, 0x41);
1656 stv0900_write_reg(intp, FFECFG, 0x41);
1657 stv0900_write_reg(intp, VITSCALE, 0x82);
1658 stv0900_write_reg(intp, VAVSRVIT, 0x0);
1659 }
1660
1661 k_ref_tmg = k_ref_tmg_max;
1662
1663 do {
1664 stv0900_write_reg(intp, KREFTMG, k_ref_tmg);
1665 if (stv0900_search_srate_coarse(fe) != 0) {
1666 coarse_srate = stv0900_search_srate_fine(fe);
1667
1668 if (coarse_srate != 0) {
1669 stv0900_get_lock_timeout(&demod_timeout,
1670 &fec_timeout,
1671 coarse_srate,
1672 STV0900_BLIND_SEARCH);
1673 lock = stv0900_get_demod_lock(intp,
1674 demod,
1675 demod_timeout);
1676 } else
1677 lock = FALSE;
1678 } else {
1679 fail_cpt = 0;
1680 agc2_overflow = 0;
1681
1682 for (i = 0; i < 10; i++) {
1683 agc2_int = (stv0900_read_reg(intp, AGC2I1) << 8)
1684 | stv0900_read_reg(intp, AGC2I0);
1685
1686 if (agc2_int >= 0xff00)
1687 agc2_overflow++;
1688
1689 dstatus2 = stv0900_read_reg(intp, DSTATUS2);
1690
1691 if (((dstatus2 & 0x1) == 0x1) &&
1692 ((dstatus2 >> 7) == 1))
1693 fail_cpt++;
1694 }
1695
1696 if ((fail_cpt > 7) || (agc2_overflow > 7))
1697 coarse_fail = TRUE;
1698
1699 lock = FALSE;
1700 }
1701 k_ref_tmg -= 30;
1702 } while ((k_ref_tmg >= k_ref_tmg_min) &&
1703 (lock == FALSE) &&
1704 (coarse_fail == FALSE));
1705
1706 return lock;
1707}
1708
1709static void stv0900_set_viterbi_acq(struct stv0900_internal *intp,
1710 enum fe_stv0900_demod_num demod)
1711{
1712 s32 vth_reg = VTH12;
1713
1714 dprintk("%s\n", __func__);
1715
1716 stv0900_write_reg(intp, vth_reg++, 0x96);
1717 stv0900_write_reg(intp, vth_reg++, 0x64);
1718 stv0900_write_reg(intp, vth_reg++, 0x36);
1719 stv0900_write_reg(intp, vth_reg++, 0x23);
1720 stv0900_write_reg(intp, vth_reg++, 0x1e);
1721 stv0900_write_reg(intp, vth_reg++, 0x19);
1722}
1723
1724static void stv0900_set_search_standard(struct stv0900_internal *intp,
1725 enum fe_stv0900_demod_num demod)
1726{
1727
1728 dprintk("%s\n", __func__);
1729
1730 switch (intp->srch_standard[demod]) {
1731 case STV0900_SEARCH_DVBS1:
1732 dprintk("Search Standard = DVBS1\n");
1733 break;
1734 case STV0900_SEARCH_DSS:
1735 dprintk("Search Standard = DSS\n");
1736 break;
1737 case STV0900_SEARCH_DVBS2:
1738 dprintk("Search Standard = DVBS2\n");
1739 break;
1740 case STV0900_AUTO_SEARCH:
1741 default:
1742 dprintk("Search Standard = AUTO\n");
1743 break;
1744 }
1745
1746 switch (intp->srch_standard[demod]) {
1747 case STV0900_SEARCH_DVBS1:
1748 case STV0900_SEARCH_DSS:
1749 stv0900_write_bits(intp, DVBS1_ENABLE, 1);
1750 stv0900_write_bits(intp, DVBS2_ENABLE, 0);
1751 stv0900_write_bits(intp, STOP_CLKVIT, 0);
1752 stv0900_set_dvbs1_track_car_loop(intp,
1753 demod,
1754 intp->symbol_rate[demod]);
1755 stv0900_write_reg(intp, CAR2CFG, 0x22);
1756
1757 stv0900_set_viterbi_acq(intp, demod);
1758 stv0900_set_viterbi_standard(intp,
1759 intp->srch_standard[demod],
1760 intp->fec[demod], demod);
1761
1762 break;
1763 case STV0900_SEARCH_DVBS2:
1764 stv0900_write_bits(intp, DVBS1_ENABLE, 0);
1765 stv0900_write_bits(intp, DVBS2_ENABLE, 1);
1766 stv0900_write_bits(intp, STOP_CLKVIT, 1);
1767 stv0900_write_reg(intp, ACLC, 0x1a);
1768 stv0900_write_reg(intp, BCLC, 0x09);
1769 if (intp->chip_id <= 0x20)
1770 stv0900_write_reg(intp, CAR2CFG, 0x26);
1771 else
1772 stv0900_write_reg(intp, CAR2CFG, 0x66);
1773
1774 if (intp->demod_mode != STV0900_SINGLE) {
1775 if (intp->chip_id <= 0x11)
1776 stv0900_stop_all_s2_modcod(intp, demod);
1777 else
1778 stv0900_activate_s2_modcod(intp, demod);
1779
1780 } else
1781 stv0900_activate_s2_modcod_single(intp, demod);
1782
1783 stv0900_set_viterbi_tracq(intp, demod);
1784
1785 break;
1786 case STV0900_AUTO_SEARCH:
1787 default:
1788 stv0900_write_bits(intp, DVBS1_ENABLE, 1);
1789 stv0900_write_bits(intp, DVBS2_ENABLE, 1);
1790 stv0900_write_bits(intp, STOP_CLKVIT, 0);
1791 stv0900_write_reg(intp, ACLC, 0x1a);
1792 stv0900_write_reg(intp, BCLC, 0x09);
1793 stv0900_set_dvbs1_track_car_loop(intp,
1794 demod,
1795 intp->symbol_rate[demod]);
1796 if (intp->chip_id <= 0x20)
1797 stv0900_write_reg(intp, CAR2CFG, 0x26);
1798 else
1799 stv0900_write_reg(intp, CAR2CFG, 0x66);
1800
1801 if (intp->demod_mode != STV0900_SINGLE) {
1802 if (intp->chip_id <= 0x11)
1803 stv0900_stop_all_s2_modcod(intp, demod);
1804 else
1805 stv0900_activate_s2_modcod(intp, demod);
1806
1807 } else
1808 stv0900_activate_s2_modcod_single(intp, demod);
1809
1810 stv0900_set_viterbi_tracq(intp, demod);
1811 stv0900_set_viterbi_standard(intp,
1812 intp->srch_standard[demod],
1813 intp->fec[demod], demod);
1814
1815 break;
1816 }
1817}
1818
1819enum fe_stv0900_signal_type stv0900_algo(struct dvb_frontend *fe)
1820{
1821 struct stv0900_state *state = fe->demodulator_priv;
1822 struct stv0900_internal *intp = state->internal;
1823 enum fe_stv0900_demod_num demod = state->demod;
1824
1825 s32 demod_timeout = 500, fec_timeout = 50;
1826 s32 aq_power, agc1_power, i;
1827
1828 int lock = FALSE, low_sr = FALSE;
1829
1830 enum fe_stv0900_signal_type signal_type = STV0900_NOCARRIER;
1831 enum fe_stv0900_search_algo algo;
1832 int no_signal = FALSE;
1833
1834 dprintk("%s\n", __func__);
1835
1836 algo = intp->srch_algo[demod];
1837 stv0900_write_bits(intp, RST_HWARE, 1);
1838 stv0900_write_reg(intp, DMDISTATE, 0x5c);
1839 if (intp->chip_id >= 0x20) {
1840 if (intp->symbol_rate[demod] > 5000000)
1841 stv0900_write_reg(intp, CORRELABS, 0x9e);
1842 else
1843 stv0900_write_reg(intp, CORRELABS, 0x82);
1844 } else
1845 stv0900_write_reg(intp, CORRELABS, 0x88);
1846
1847 stv0900_get_lock_timeout(&demod_timeout, &fec_timeout,
1848 intp->symbol_rate[demod],
1849 intp->srch_algo[demod]);
1850
1851 if (intp->srch_algo[demod] == STV0900_BLIND_SEARCH) {
1852 intp->bw[demod] = 2 * 36000000;
1853
1854 stv0900_write_reg(intp, TMGCFG2, 0xc0);
1855 stv0900_write_reg(intp, CORRELMANT, 0x70);
1856
1857 stv0900_set_symbol_rate(intp, intp->mclk, 1000000, demod);
1858 } else {
1859 stv0900_write_reg(intp, DMDT0M, 0x20);
1860 stv0900_write_reg(intp, TMGCFG, 0xd2);
1861
1862 if (intp->symbol_rate[demod] < 2000000)
1863 stv0900_write_reg(intp, CORRELMANT, 0x63);
1864 else
1865 stv0900_write_reg(intp, CORRELMANT, 0x70);
1866
1867 stv0900_write_reg(intp, AGC2REF, 0x38);
1868
1869 intp->bw[demod] =
1870 stv0900_carrier_width(intp->symbol_rate[demod],
1871 intp->rolloff);
1872 if (intp->chip_id >= 0x20) {
1873 stv0900_write_reg(intp, KREFTMG, 0x5a);
1874
1875 if (intp->srch_algo[demod] == STV0900_COLD_START) {
1876 intp->bw[demod] += 10000000;
1877 intp->bw[demod] *= 15;
1878 intp->bw[demod] /= 10;
1879 } else if (intp->srch_algo[demod] == STV0900_WARM_START)
1880 intp->bw[demod] += 10000000;
1881
1882 } else {
1883 stv0900_write_reg(intp, KREFTMG, 0xc1);
1884 intp->bw[demod] += 10000000;
1885 intp->bw[demod] *= 15;
1886 intp->bw[demod] /= 10;
1887 }
1888
1889 stv0900_write_reg(intp, TMGCFG2, 0xc1);
1890
1891 stv0900_set_symbol_rate(intp, intp->mclk,
1892 intp->symbol_rate[demod], demod);
1893 stv0900_set_max_symbol_rate(intp, intp->mclk,
1894 intp->symbol_rate[demod], demod);
1895 stv0900_set_min_symbol_rate(intp, intp->mclk,
1896 intp->symbol_rate[demod], demod);
1897 if (intp->symbol_rate[demod] >= 10000000)
1898 low_sr = FALSE;
1899 else
1900 low_sr = TRUE;
1901
1902 }
1903
1904 if (intp->tuner_type[demod] == 3)
1905 stv0900_set_tuner_auto(intp, intp->freq[demod],
1906 intp->bw[demod], demod);
1907 else
1908 stv0900_set_tuner(fe, intp->freq[demod], intp->bw[demod]);
1909
1910 agc1_power = MAKEWORD(stv0900_get_bits(intp, AGCIQ_VALUE1),
1911 stv0900_get_bits(intp, AGCIQ_VALUE0));
1912
1913 aq_power = 0;
1914
1915 if (agc1_power == 0) {
1916 for (i = 0; i < 5; i++)
1917 aq_power += (stv0900_get_bits(intp, POWER_I) +
1918 stv0900_get_bits(intp, POWER_Q)) / 2;
1919
1920 aq_power /= 5;
1921 }
1922
1923 if ((agc1_power == 0) && (aq_power < IQPOWER_THRESHOLD)) {
1924 intp->result[demod].locked = FALSE;
1925 signal_type = STV0900_NOAGC1;
1926 dprintk("%s: NO AGC1, POWERI, POWERQ\n", __func__);
1927 } else {
1928 stv0900_write_bits(intp, SPECINV_CONTROL,
1929 intp->srch_iq_inv[demod]);
1930 if (intp->chip_id <= 0x20)
1931 stv0900_write_bits(intp, MANUALSX_ROLLOFF, 1);
1932 else
1933 stv0900_write_bits(intp, MANUALS2_ROLLOFF, 1);
1934
1935 stv0900_set_search_standard(intp, demod);
1936
1937 if (intp->srch_algo[demod] != STV0900_BLIND_SEARCH)
1938 stv0900_start_search(intp, demod);
1939 }
1940
1941 if (signal_type == STV0900_NOAGC1)
1942 return signal_type;
1943
1944 if (intp->chip_id == 0x12) {
1945 stv0900_write_bits(intp, RST_HWARE, 0);
1946 msleep(3);
1947 stv0900_write_bits(intp, RST_HWARE, 1);
1948 stv0900_write_bits(intp, RST_HWARE, 0);
1949 }
1950
1951 if (algo == STV0900_BLIND_SEARCH)
1952 lock = stv0900_blind_search_algo(fe);
1953 else if (algo == STV0900_COLD_START)
1954 lock = stv0900_get_demod_cold_lock(fe, demod_timeout);
1955 else if (algo == STV0900_WARM_START)
1956 lock = stv0900_get_demod_lock(intp, demod, demod_timeout);
1957
1958 if ((lock == FALSE) && (algo == STV0900_COLD_START)) {
1959 if (low_sr == FALSE) {
1960 if (stv0900_check_timing_lock(intp, demod) == TRUE)
1961 lock = stv0900_sw_algo(intp, demod);
1962 }
1963 }
1964
1965 if (lock == TRUE)
1966 signal_type = stv0900_get_signal_params(fe);
1967
1968 if ((lock == TRUE) && (signal_type == STV0900_RANGEOK)) {
1969 stv0900_track_optimization(fe);
1970 if (intp->chip_id <= 0x11) {
1971 if ((stv0900_get_standard(fe, 0) ==
1972 STV0900_DVBS1_STANDARD) &&
1973 (stv0900_get_standard(fe, 1) ==
1974 STV0900_DVBS1_STANDARD)) {
1975 msleep(20);
1976 stv0900_write_bits(intp, RST_HWARE, 0);
1977 } else {
1978 stv0900_write_bits(intp, RST_HWARE, 0);
1979 msleep(3);
1980 stv0900_write_bits(intp, RST_HWARE, 1);
1981 stv0900_write_bits(intp, RST_HWARE, 0);
1982 }
1983
1984 } else if (intp->chip_id >= 0x20) {
1985 stv0900_write_bits(intp, RST_HWARE, 0);
1986 msleep(3);
1987 stv0900_write_bits(intp, RST_HWARE, 1);
1988 stv0900_write_bits(intp, RST_HWARE, 0);
1989 }
1990
1991 if (stv0900_wait_for_lock(intp, demod,
1992 fec_timeout, fec_timeout) == TRUE) {
1993 lock = TRUE;
1994 intp->result[demod].locked = TRUE;
1995 if (intp->result[demod].standard ==
1996 STV0900_DVBS2_STANDARD) {
1997 stv0900_set_dvbs2_rolloff(intp, demod);
1998 stv0900_write_bits(intp, RESET_UPKO_COUNT, 1);
1999 stv0900_write_bits(intp, RESET_UPKO_COUNT, 0);
2000 stv0900_write_reg(intp, ERRCTRL1, 0x67);
2001 } else {
2002 stv0900_write_reg(intp, ERRCTRL1, 0x75);
2003 }
2004
2005 stv0900_write_reg(intp, FBERCPT4, 0);
2006 stv0900_write_reg(intp, ERRCTRL2, 0xc1);
2007 } else {
2008 lock = FALSE;
2009 signal_type = STV0900_NODATA;
2010 no_signal = stv0900_check_signal_presence(intp, demod);
2011
2012 intp->result[demod].locked = FALSE;
2013 }
2014 }
2015
2016 if ((signal_type != STV0900_NODATA) || (no_signal != FALSE))
2017 return signal_type;
2018
2019 if (intp->chip_id > 0x11) {
2020 intp->result[demod].locked = FALSE;
2021 return signal_type;
2022 }
2023
2024 if ((stv0900_get_bits(intp, HEADER_MODE) == STV0900_DVBS_FOUND) &&
2025 (intp->srch_iq_inv[demod] <= STV0900_IQ_AUTO_NORMAL_FIRST))
2026 signal_type = stv0900_dvbs1_acq_workaround(fe);
2027
2028 return signal_type;
2029}
2030
2031
