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