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Merge tag 'io_uring-5.11-2021-01-16' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / media / dvb-frontends / cxd2880 / cxd2880_tnrdmd_dvbt_mon.c
blobfedc3b4a2fa08a234ba903e35ae530a15d20805a
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * cxd2880_tnrdmd_dvbt_mon.c
4 * Sony CXD2880 DVB-T2/T tuner + demodulator driver
5 * DVB-T monitor functions
6 *
7 * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
8 */
9
10 #include "cxd2880_tnrdmd_mon.h"
11 #include "cxd2880_tnrdmd_dvbt.h"
12 #include "cxd2880_tnrdmd_dvbt_mon.h"
13
14 #include <media/dvb_math.h>
15
16 static const int ref_dbm_1000[3][5] = {
17 {-93000, -91000, -90000, -89000, -88000},
18 {-87000, -85000, -84000, -83000, -82000},
19 {-82000, -80000, -78000, -77000, -76000},
20 };
21
22 static int is_tps_locked(struct cxd2880_tnrdmd *tnr_dmd);
23
24 int cxd2880_tnrdmd_dvbt_mon_sync_stat(struct cxd2880_tnrdmd
25 *tnr_dmd, u8 *sync_stat,
26 u8 *ts_lock_stat,
27 u8 *unlock_detected)
28 {
29 u8 rdata = 0x00;
30 int ret;
31
32 if (!tnr_dmd || !sync_stat || !ts_lock_stat || !unlock_detected)
33 return -EINVAL;
34
35 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
36 return -EINVAL;
37 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
38 return -EINVAL;
39
40 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
41 CXD2880_IO_TGT_DMD,
42 0x00, 0x0d);
43 if (ret)
44 return ret;
45
46 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
47 CXD2880_IO_TGT_DMD,
48 0x10, &rdata, 1);
49 if (ret)
50 return ret;
51
52 *unlock_detected = (rdata & 0x10) ? 1 : 0;
53 *sync_stat = rdata & 0x07;
54 *ts_lock_stat = (rdata & 0x20) ? 1 : 0;
55
56 if (*sync_stat == 0x07)
57 return -EAGAIN;
58
59 return ret;
60 }
61
62 int cxd2880_tnrdmd_dvbt_mon_sync_stat_sub(struct cxd2880_tnrdmd
63 *tnr_dmd, u8 *sync_stat,
64 u8 *unlock_detected)
65 {
66 u8 ts_lock_stat = 0;
67
68 if (!tnr_dmd || !sync_stat || !unlock_detected)
69 return -EINVAL;
70
71 if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
72 return -EINVAL;
73
74 return cxd2880_tnrdmd_dvbt_mon_sync_stat(tnr_dmd->diver_sub,
75 sync_stat,
76 &ts_lock_stat,
77 unlock_detected);
78 }
79
80 int cxd2880_tnrdmd_dvbt_mon_mode_guard(struct cxd2880_tnrdmd
81 *tnr_dmd,
82 enum cxd2880_dvbt_mode
83 *mode,
84 enum cxd2880_dvbt_guard
85 *guard)
86 {
87 u8 rdata = 0x00;
88 int ret;
89
90 if (!tnr_dmd || !mode || !guard)
91 return -EINVAL;
92
93 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
94 return -EINVAL;
95
96 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
97 return -EINVAL;
98
99 ret = slvt_freeze_reg(tnr_dmd);
100 if (ret)
101 return ret;
102
103 ret = is_tps_locked(tnr_dmd);
104 if (ret) {
105 slvt_unfreeze_reg(tnr_dmd);
106
107 if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_MAIN)
108 ret =
109 cxd2880_tnrdmd_dvbt_mon_mode_guard(tnr_dmd->diver_sub,
110 mode, guard);
111
112 return ret;
113 }
114
115 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
116 CXD2880_IO_TGT_DMD,
117 0x00, 0x0d);
118 if (ret) {
119 slvt_unfreeze_reg(tnr_dmd);
120 return ret;
121 }
122
123 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
124 CXD2880_IO_TGT_DMD,
125 0x1b, &rdata, 1);
126 if (ret) {
127 slvt_unfreeze_reg(tnr_dmd);
128 return ret;
129 }
130
131 slvt_unfreeze_reg(tnr_dmd);
132
133 *mode = (enum cxd2880_dvbt_mode)((rdata >> 2) & 0x03);
134 *guard = (enum cxd2880_dvbt_guard)(rdata & 0x03);
135
136 return ret;
137 }
138
139 int cxd2880_tnrdmd_dvbt_mon_carrier_offset(struct cxd2880_tnrdmd
140 *tnr_dmd, int *offset)
141 {
142 u8 rdata[4];
143 u32 ctl_val = 0;
144 int ret;
145
146 if (!tnr_dmd || !offset)
147 return -EINVAL;
148
149 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
150 return -EINVAL;
151
152 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
153 return -EINVAL;
154
155 ret = slvt_freeze_reg(tnr_dmd);
156 if (ret)
157 return ret;
158
159 ret = is_tps_locked(tnr_dmd);
160 if (ret) {
161 slvt_unfreeze_reg(tnr_dmd);
162 return ret;
163 }
164
165 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
166 CXD2880_IO_TGT_DMD,
167 0x00, 0x0d);
168 if (ret) {
169 slvt_unfreeze_reg(tnr_dmd);
170 return ret;
171 }
172
173 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
174 CXD2880_IO_TGT_DMD,
175 0x1d, rdata, 4);
176 if (ret) {
177 slvt_unfreeze_reg(tnr_dmd);
178 return ret;
179 }
180
181 slvt_unfreeze_reg(tnr_dmd);
182
183 ctl_val =
184 ((rdata[0] & 0x1f) << 24) | (rdata[1] << 16) | (rdata[2] << 8) |
185 (rdata[3]);
186 *offset = cxd2880_convert2s_complement(ctl_val, 29);
187 *offset = -1 * ((*offset) * tnr_dmd->bandwidth / 235);
188
189 return ret;
190 }
191
192 int cxd2880_tnrdmd_dvbt_mon_carrier_offset_sub(struct
193 cxd2880_tnrdmd
194 *tnr_dmd,
195 int *offset)
196 {
197 if (!tnr_dmd || !offset)
198 return -EINVAL;
199
200 if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
201 return -EINVAL;
202
203 return cxd2880_tnrdmd_dvbt_mon_carrier_offset(tnr_dmd->diver_sub,
204 offset);
205 }
206
207 int cxd2880_tnrdmd_dvbt_mon_tps_info(struct cxd2880_tnrdmd
208 *tnr_dmd,
209 struct cxd2880_dvbt_tpsinfo
210 *info)
211 {
212 u8 rdata[7];
213 u8 cell_id_ok = 0;
214 int ret;
215
216 if (!tnr_dmd || !info)
217 return -EINVAL;
218
219 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
220 return -EINVAL;
221
222 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
223 return -EINVAL;
224
225 ret = slvt_freeze_reg(tnr_dmd);
226 if (ret)
227 return ret;
228
229 ret = is_tps_locked(tnr_dmd);
230 if (ret) {
231 slvt_unfreeze_reg(tnr_dmd);
232
233 if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_MAIN)
234 ret =
235 cxd2880_tnrdmd_dvbt_mon_tps_info(tnr_dmd->diver_sub,
236 info);
237
238 return ret;
239 }
240
241 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
242 CXD2880_IO_TGT_DMD,
243 0x00, 0x0d);
244 if (ret) {
245 slvt_unfreeze_reg(tnr_dmd);
246 return ret;
247 }
248
249 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
250 CXD2880_IO_TGT_DMD,
251 0x29, rdata, 7);
252 if (ret) {
253 slvt_unfreeze_reg(tnr_dmd);
254 return ret;
255 }
256
257 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
258 CXD2880_IO_TGT_DMD,
259 0x00, 0x11);
260 if (ret) {
261 slvt_unfreeze_reg(tnr_dmd);
262 return ret;
263 }
264
265 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
266 CXD2880_IO_TGT_DMD,
267 0xd5, &cell_id_ok, 1);
268 if (ret) {
269 slvt_unfreeze_reg(tnr_dmd);
270 return ret;
271 }
272
273 slvt_unfreeze_reg(tnr_dmd);
274
275 info->constellation =
276 (enum cxd2880_dvbt_constellation)((rdata[0] >> 6) & 0x03);
277 info->hierarchy = (enum cxd2880_dvbt_hierarchy)((rdata[0] >> 3) & 0x07);
278 info->rate_hp = (enum cxd2880_dvbt_coderate)(rdata[0] & 0x07);
279 info->rate_lp = (enum cxd2880_dvbt_coderate)((rdata[1] >> 5) & 0x07);
280 info->guard = (enum cxd2880_dvbt_guard)((rdata[1] >> 3) & 0x03);
281 info->mode = (enum cxd2880_dvbt_mode)((rdata[1] >> 1) & 0x03);
282 info->fnum = (rdata[2] >> 6) & 0x03;
283 info->length_indicator = rdata[2] & 0x3f;
284 info->cell_id = (rdata[3] << 8) | rdata[4];
285 info->reserved_even = rdata[5] & 0x3f;
286 info->reserved_odd = rdata[6] & 0x3f;
287
288 info->cell_id_ok = cell_id_ok & 0x01;
289
290 return ret;
291 }
292
293 int cxd2880_tnrdmd_dvbt_mon_packet_error_number(struct
294 cxd2880_tnrdmd
295 *tnr_dmd,
296 u32 *pen)
297 {
298 u8 rdata[3];
299 int ret;
300
301 if (!tnr_dmd || !pen)
302 return -EINVAL;
303
304 if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
305 return -EINVAL;
306
307 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
308 return -EINVAL;
309
310 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
311 return -EINVAL;
312
313 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
314 CXD2880_IO_TGT_DMD,
315 0x00, 0x0d);
316 if (ret)
317 return ret;
318
319 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
320 CXD2880_IO_TGT_DMD,
321 0x26, rdata, 3);
322 if (ret)
323 return ret;
324
325 if (!(rdata[0] & 0x01))
326 return -EAGAIN;
327
328 *pen = (rdata[1] << 8) | rdata[2];
329
330 return ret;
331 }
332
333 int cxd2880_tnrdmd_dvbt_mon_spectrum_sense(struct cxd2880_tnrdmd
334 *tnr_dmd,
335 enum
336 cxd2880_tnrdmd_spectrum_sense
337 *sense)
338 {
339 u8 data = 0;
340 int ret;
341
342 if (!tnr_dmd || !sense)
343 return -EINVAL;
344
345 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
346 return -EINVAL;
347
348 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
349 return -EINVAL;
350
351 ret = slvt_freeze_reg(tnr_dmd);
352 if (ret)
353 return ret;
354
355 ret = is_tps_locked(tnr_dmd);
356 if (ret) {
357 slvt_unfreeze_reg(tnr_dmd);
358
359 if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_MAIN)
360 ret = cxd2880_tnrdmd_dvbt_mon_spectrum_sense(tnr_dmd->diver_sub,
361 sense);
362
363 return ret;
364 }
365
366 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
367 CXD2880_IO_TGT_DMD,
368 0x00, 0x0d);
369 if (ret) {
370 slvt_unfreeze_reg(tnr_dmd);
371 return ret;
372 }
373
374 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
375 CXD2880_IO_TGT_DMD,
376 0x1c, &data, sizeof(data));
377 if (ret) {
378 slvt_unfreeze_reg(tnr_dmd);
379 return ret;
380 }
381
382 slvt_unfreeze_reg(tnr_dmd);
383
384 *sense =
385 (data & 0x01) ? CXD2880_TNRDMD_SPECTRUM_INV :
386 CXD2880_TNRDMD_SPECTRUM_NORMAL;
387
388 return ret;
389 }
390
391 static int dvbt_read_snr_reg(struct cxd2880_tnrdmd *tnr_dmd,
392 u16 *reg_value)
393 {
394 u8 rdata[2];
395 int ret;
396
397 if (!tnr_dmd || !reg_value)
398 return -EINVAL;
399
400 ret = slvt_freeze_reg(tnr_dmd);
401 if (ret)
402 return ret;
403
404 ret = is_tps_locked(tnr_dmd);
405 if (ret) {
406 slvt_unfreeze_reg(tnr_dmd);
407 return ret;
408 }
409
410 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
411 CXD2880_IO_TGT_DMD,
412 0x00, 0x0d);
413 if (ret) {
414 slvt_unfreeze_reg(tnr_dmd);
415 return ret;
416 }
417
418 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
419 CXD2880_IO_TGT_DMD,
420 0x13, rdata, 2);
421 if (ret) {
422 slvt_unfreeze_reg(tnr_dmd);
423 return ret;
424 }
425
426 slvt_unfreeze_reg(tnr_dmd);
427
428 *reg_value = (rdata[0] << 8) | rdata[1];
429
430 return ret;
431 }
432
433 static int dvbt_calc_snr(struct cxd2880_tnrdmd *tnr_dmd,
434 u32 reg_value, int *snr)
435 {
436 if (!tnr_dmd || !snr)
437 return -EINVAL;
438
439 if (reg_value == 0)
440 return -EAGAIN;
441
442 if (reg_value > 4996)
443 reg_value = 4996;
444
445 *snr = intlog10(reg_value) - intlog10(5350 - reg_value);
446 *snr = (*snr + 839) / 1678 + 28500;
447
448 return 0;
449 }
450
451 int cxd2880_tnrdmd_dvbt_mon_snr(struct cxd2880_tnrdmd *tnr_dmd,
452 int *snr)
453 {
454 u16 reg_value = 0;
455 int ret;
456
457 if (!tnr_dmd || !snr)
458 return -EINVAL;
459
460 *snr = -1000 * 1000;
461
462 if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
463 return -EINVAL;
464
465 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
466 return -EINVAL;
467
468 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
469 return -EINVAL;
470
471 if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SINGLE) {
472 ret = dvbt_read_snr_reg(tnr_dmd, &reg_value);
473 if (ret)
474 return ret;
475
476 ret = dvbt_calc_snr(tnr_dmd, reg_value, snr);
477 } else {
478 int snr_main = 0;
479 int snr_sub = 0;
480
481 ret =
482 cxd2880_tnrdmd_dvbt_mon_snr_diver(tnr_dmd, snr, &snr_main,
483 &snr_sub);
484 }
485
486 return ret;
487 }
488
489 int cxd2880_tnrdmd_dvbt_mon_snr_diver(struct cxd2880_tnrdmd
490 *tnr_dmd, int *snr,
491 int *snr_main, int *snr_sub)
492 {
493 u16 reg_value = 0;
494 u32 reg_value_sum = 0;
495 int ret;
496
497 if (!tnr_dmd || !snr || !snr_main || !snr_sub)
498 return -EINVAL;
499
500 *snr = -1000 * 1000;
501 *snr_main = -1000 * 1000;
502 *snr_sub = -1000 * 1000;
503
504 if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
505 return -EINVAL;
506
507 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
508 return -EINVAL;
509
510 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
511 return -EINVAL;
512
513 ret = dvbt_read_snr_reg(tnr_dmd, &reg_value);
514 if (!ret) {
515 ret = dvbt_calc_snr(tnr_dmd, reg_value, snr_main);
516 if (ret)
517 reg_value = 0;
518 } else if (ret == -EAGAIN) {
519 reg_value = 0;
520 } else {
521 return ret;
522 }
523
524 reg_value_sum += reg_value;
525
526 ret = dvbt_read_snr_reg(tnr_dmd->diver_sub, &reg_value);
527 if (!ret) {
528 ret = dvbt_calc_snr(tnr_dmd->diver_sub, reg_value, snr_sub);
529 if (ret)
530 reg_value = 0;
531 } else if (ret == -EAGAIN) {
532 reg_value = 0;
533 } else {
534 return ret;
535 }
536
537 reg_value_sum += reg_value;
538
539 return dvbt_calc_snr(tnr_dmd, reg_value_sum, snr);
540 }
541
542 int cxd2880_tnrdmd_dvbt_mon_sampling_offset(struct cxd2880_tnrdmd
543 *tnr_dmd, int *ppm)
544 {
545 u8 ctl_val_reg[5];
546 u8 nominal_rate_reg[5];
547 u32 trl_ctl_val = 0;
548 u32 trcg_nominal_rate = 0;
549 int num;
550 int den;
551 s8 diff_upper = 0;
552 int ret;
553
554 if (!tnr_dmd || !ppm)
555 return -EINVAL;
556
557 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
558 return -EINVAL;
559
560 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
561 return -EINVAL;
562
563 ret = slvt_freeze_reg(tnr_dmd);
564 if (ret)
565 return ret;
566
567 ret = is_tps_locked(tnr_dmd);
568 if (ret) {
569 slvt_unfreeze_reg(tnr_dmd);
570 return ret;
571 }
572
573 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
574 CXD2880_IO_TGT_DMD,
575 0x00, 0x0d);
576 if (ret) {
577 slvt_unfreeze_reg(tnr_dmd);
578 return ret;
579 }
580
581 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
582 CXD2880_IO_TGT_DMD,
583 0x21, ctl_val_reg,
584 sizeof(ctl_val_reg));
585 if (ret) {
586 slvt_unfreeze_reg(tnr_dmd);
587 return ret;
588 }
589
590 ret = tnr_dmd->io->write_reg(tnr_dmd->io,
591 CXD2880_IO_TGT_DMD,
592 0x00, 0x04);
593 if (ret) {
594 slvt_unfreeze_reg(tnr_dmd);
595 return ret;
596 }
597
598 ret = tnr_dmd->io->read_regs(tnr_dmd->io,
599 CXD2880_IO_TGT_DMD,
600 0x60, nominal_rate_reg,
601 sizeof(nominal_rate_reg));
602 if (ret) {
603 slvt_unfreeze_reg(tnr_dmd);
604 return ret;
605 }
606
607 slvt_unfreeze_reg(tnr_dmd);
608
609 diff_upper =
610 (ctl_val_reg[0] & 0x7f) - (nominal_rate_reg[0] & 0x7f);
611
612 if (diff_upper < -1 || diff_upper > 1)
613 return -EAGAIN;
614
615 trl_ctl_val = ctl_val_reg[1] << 24;
616 trl_ctl_val |= ctl_val_reg[2] << 16;
617 trl_ctl_val |= ctl_val_reg[3] << 8;
618 trl_ctl_val |= ctl_val_reg[4];
619
620 trcg_nominal_rate = nominal_rate_reg[1] << 24;
621 trcg_nominal_rate |= nominal_rate_reg[2] << 16;
622 trcg_nominal_rate |= nominal_rate_reg[3] << 8;
623 trcg_nominal_rate |= nominal_rate_reg[4];
624
625 trl_ctl_val >>= 1;
626 trcg_nominal_rate >>= 1;
627
628 if (diff_upper == 1)
629 num =
630 (int)((trl_ctl_val + 0x80000000u) -
631 trcg_nominal_rate);
632 else if (diff_upper == -1)
633 num =
634 -(int)((trcg_nominal_rate + 0x80000000u) -
635 trl_ctl_val);
636 else
637 num = (int)(trl_ctl_val - trcg_nominal_rate);
638
639 den = (nominal_rate_reg[0] & 0x7f) << 24;
640 den |= nominal_rate_reg[1] << 16;
641 den |= nominal_rate_reg[2] << 8;
642 den |= nominal_rate_reg[3];
643 den = (den + (390625 / 2)) / 390625;
644
645 den >>= 1;
646
647 if (num >= 0)
648 *ppm = (num + (den / 2)) / den;
649 else
650 *ppm = (num - (den / 2)) / den;
651
652 return ret;
653 }
654
655 int cxd2880_tnrdmd_dvbt_mon_sampling_offset_sub(struct
656 cxd2880_tnrdmd
657 *tnr_dmd, int *ppm)
658 {
659 if (!tnr_dmd || !ppm)
660 return -EINVAL;
661
662 if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
663 return -EINVAL;
664
665 return cxd2880_tnrdmd_dvbt_mon_sampling_offset(tnr_dmd->diver_sub, ppm);
666 }
667
668 static int dvbt_calc_ssi(struct cxd2880_tnrdmd *tnr_dmd,
669 int rf_lvl, u8 *ssi)
670 {
671 struct cxd2880_dvbt_tpsinfo tps;
672 int prel;
673 int temp_ssi = 0;
674 int ret;
675
676 if (!tnr_dmd || !ssi)
677 return -EINVAL;
678
679 ret = cxd2880_tnrdmd_dvbt_mon_tps_info(tnr_dmd, &tps);
680 if (ret)
681 return ret;
682
683 if (tps.constellation >= CXD2880_DVBT_CONSTELLATION_RESERVED_3 ||
684 tps.rate_hp >= CXD2880_DVBT_CODERATE_RESERVED_5)
685 return -EINVAL;
686
687 prel = rf_lvl - ref_dbm_1000[tps.constellation][tps.rate_hp];
688
689 if (prel < -15000)
690 temp_ssi = 0;
691 else if (prel < 0)
692 temp_ssi = ((2 * (prel + 15000)) + 1500) / 3000;
693 else if (prel < 20000)
694 temp_ssi = (((4 * prel) + 500) / 1000) + 10;
695 else if (prel < 35000)
696 temp_ssi = (((2 * (prel - 20000)) + 1500) / 3000) + 90;
697 else
698 temp_ssi = 100;
699
700 *ssi = (temp_ssi > 100) ? 100 : (u8)temp_ssi;
701
702 return ret;
703 }
704
705 int cxd2880_tnrdmd_dvbt_mon_ssi(struct cxd2880_tnrdmd *tnr_dmd,
706 u8 *ssi)
707 {
708 int rf_lvl = 0;
709 int ret;
710
711 if (!tnr_dmd || !ssi)
712 return -EINVAL;
713
714 if (tnr_dmd->diver_mode == CXD2880_TNRDMD_DIVERMODE_SUB)
715 return -EINVAL;
716
717 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
718 return -EINVAL;
719
720 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
721 return -EINVAL;
722
723 ret = cxd2880_tnrdmd_mon_rf_lvl(tnr_dmd, &rf_lvl);
724 if (ret)
725 return ret;
726
727 return dvbt_calc_ssi(tnr_dmd, rf_lvl, ssi);
728 }
729
730 int cxd2880_tnrdmd_dvbt_mon_ssi_sub(struct cxd2880_tnrdmd *tnr_dmd,
731 u8 *ssi)
732 {
733 int rf_lvl = 0;
734 int ret;
735
736 if (!tnr_dmd || !ssi)
737 return -EINVAL;
738
739 if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
740 return -EINVAL;
741
742 if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
743 return -EINVAL;
744
745 if (tnr_dmd->sys != CXD2880_DTV_SYS_DVBT)
746 return -EINVAL;
747
748 ret = cxd2880_tnrdmd_mon_rf_lvl(tnr_dmd->diver_sub, &rf_lvl);
749 if (ret)
750 return ret;
751
752 return dvbt_calc_ssi(tnr_dmd, rf_lvl, ssi);
753 }
754
755 static int is_tps_locked(struct cxd2880_tnrdmd *tnr_dmd)
756 {
757 u8 sync = 0;
758 u8 tslock = 0;
759 u8 early_unlock = 0;
760 int ret;
761
762 if (!tnr_dmd)
763 return -EINVAL;
764
765 ret =
766 cxd2880_tnrdmd_dvbt_mon_sync_stat(tnr_dmd, &sync, &tslock,
767 &early_unlock);
768 if (ret)
769 return ret;
770
771 if (sync != 6)
772 return -EAGAIN;
773
774 return 0;
775 }
Linux with added FPC-III support