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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 / tuners / tda18271-fe.c
blobf0371d004b36dcf3b3f2fc3b434d235cf632e2b8
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
4
5 Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
6
7 */
8
9 #include "tda18271-priv.h"
10 #include "tda8290.h"
11
12 #include <linux/delay.h>
13 #include <linux/videodev2.h>
14
15 int tda18271_debug;
16 module_param_named(debug, tda18271_debug, int, 0644);
17 MODULE_PARM_DESC(debug, "set debug level (info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
18
19 static int tda18271_cal_on_startup = -1;
20 module_param_named(cal, tda18271_cal_on_startup, int, 0644);
21 MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
22
23 static DEFINE_MUTEX(tda18271_list_mutex);
24 static LIST_HEAD(hybrid_tuner_instance_list);
25
26 /*---------------------------------------------------------------------*/
27
28 static int tda18271_toggle_output(struct dvb_frontend *fe, int standby)
29 {
30 struct tda18271_priv *priv = fe->tuner_priv;
31
32 int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0,
33 priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0,
34 priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0);
35
36 if (tda_fail(ret))
37 goto fail;
38
39 tda_dbg("%s mode: xtal oscillator %s, slave tuner loop through %s\n",
40 standby ? "standby" : "active",
41 priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on",
42 priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on");
43 fail:
44 return ret;
45 }
46
47 /*---------------------------------------------------------------------*/
48
49 static inline int charge_pump_source(struct dvb_frontend *fe, int force)
50 {
51 struct tda18271_priv *priv = fe->tuner_priv;
52 return tda18271_charge_pump_source(fe,
53 (priv->role == TDA18271_SLAVE) ?
54 TDA18271_CAL_PLL :
55 TDA18271_MAIN_PLL, force);
56 }
57
58 static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
59 {
60 struct tda18271_priv *priv = fe->tuner_priv;
61 unsigned char *regs = priv->tda18271_regs;
62
63 switch (priv->mode) {
64 case TDA18271_ANALOG:
65 regs[R_MPD] &= ~0x80; /* IF notch = 0 */
66 break;
67 case TDA18271_DIGITAL:
68 regs[R_MPD] |= 0x80; /* IF notch = 1 */
69 break;
70 }
71 }
72
73 static int tda18271_channel_configuration(struct dvb_frontend *fe,
74 struct tda18271_std_map_item *map,
75 u32 freq, u32 bw)
76 {
77 struct tda18271_priv *priv = fe->tuner_priv;
78 unsigned char *regs = priv->tda18271_regs;
79 int ret;
80 u32 N;
81
82 /* update TV broadcast parameters */
83
84 /* set standard */
85 regs[R_EP3] &= ~0x1f; /* clear std bits */
86 regs[R_EP3] |= (map->agc_mode << 3) | map->std;
87
88 if (priv->id == TDA18271HDC2) {
89 /* set rfagc to high speed mode */
90 regs[R_EP3] &= ~0x04;
91 }
92
93 /* set cal mode to normal */
94 regs[R_EP4] &= ~0x03;
95
96 /* update IF output level */
97 regs[R_EP4] &= ~0x1c; /* clear if level bits */
98 regs[R_EP4] |= (map->if_lvl << 2);
99
100 /* update FM_RFn */
101 regs[R_EP4] &= ~0x80;
102 regs[R_EP4] |= map->fm_rfn << 7;
103
104 /* update rf top / if top */
105 regs[R_EB22] = 0x00;
106 regs[R_EB22] |= map->rfagc_top;
107 ret = tda18271_write_regs(fe, R_EB22, 1);
108 if (tda_fail(ret))
109 goto fail;
110
111 /* --------------------------------------------------------------- */
112
113 /* disable Power Level Indicator */
114 regs[R_EP1] |= 0x40;
115
116 /* make sure thermometer is off */
117 regs[R_TM] &= ~0x10;
118
119 /* frequency dependent parameters */
120
121 tda18271_calc_ir_measure(fe, &freq);
122
123 tda18271_calc_bp_filter(fe, &freq);
124
125 tda18271_calc_rf_band(fe, &freq);
126
127 tda18271_calc_gain_taper(fe, &freq);
128
129 /* --------------------------------------------------------------- */
130
131 /* dual tuner and agc1 extra configuration */
132
133 switch (priv->role) {
134 case TDA18271_MASTER:
135 regs[R_EB1] |= 0x04; /* main vco */
136 break;
137 case TDA18271_SLAVE:
138 regs[R_EB1] &= ~0x04; /* cal vco */
139 break;
140 }
141
142 /* agc1 always active */
143 regs[R_EB1] &= ~0x02;
144
145 /* agc1 has priority on agc2 */
146 regs[R_EB1] &= ~0x01;
147
148 ret = tda18271_write_regs(fe, R_EB1, 1);
149 if (tda_fail(ret))
150 goto fail;
151
152 /* --------------------------------------------------------------- */
153
154 N = map->if_freq * 1000 + freq;
155
156 switch (priv->role) {
157 case TDA18271_MASTER:
158 tda18271_calc_main_pll(fe, N);
159 tda18271_set_if_notch(fe);
160 tda18271_write_regs(fe, R_MPD, 4);
161 break;
162 case TDA18271_SLAVE:
163 tda18271_calc_cal_pll(fe, N);
164 tda18271_write_regs(fe, R_CPD, 4);
165
166 regs[R_MPD] = regs[R_CPD] & 0x7f;
167 tda18271_set_if_notch(fe);
168 tda18271_write_regs(fe, R_MPD, 1);
169 break;
170 }
171
172 ret = tda18271_write_regs(fe, R_TM, 7);
173 if (tda_fail(ret))
174 goto fail;
175
176 /* force charge pump source */
177 charge_pump_source(fe, 1);
178
179 msleep(1);
180
181 /* return pll to normal operation */
182 charge_pump_source(fe, 0);
183
184 msleep(20);
185
186 if (priv->id == TDA18271HDC2) {
187 /* set rfagc to normal speed mode */
188 if (map->fm_rfn)
189 regs[R_EP3] &= ~0x04;
190 else
191 regs[R_EP3] |= 0x04;
192 ret = tda18271_write_regs(fe, R_EP3, 1);
193 }
194 fail:
195 return ret;
196 }
197
198 static int tda18271_read_thermometer(struct dvb_frontend *fe)
199 {
200 struct tda18271_priv *priv = fe->tuner_priv;
201 unsigned char *regs = priv->tda18271_regs;
202 int tm;
203
204 /* switch thermometer on */
205 regs[R_TM] |= 0x10;
206 tda18271_write_regs(fe, R_TM, 1);
207
208 /* read thermometer info */
209 tda18271_read_regs(fe);
210
211 if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
212 (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
213
214 if ((regs[R_TM] & 0x20) == 0x20)
215 regs[R_TM] &= ~0x20;
216 else
217 regs[R_TM] |= 0x20;
218
219 tda18271_write_regs(fe, R_TM, 1);
220
221 msleep(10); /* temperature sensing */
222
223 /* read thermometer info */
224 tda18271_read_regs(fe);
225 }
226
227 tm = tda18271_lookup_thermometer(fe);
228
229 /* switch thermometer off */
230 regs[R_TM] &= ~0x10;
231 tda18271_write_regs(fe, R_TM, 1);
232
233 /* set CAL mode to normal */
234 regs[R_EP4] &= ~0x03;
235 tda18271_write_regs(fe, R_EP4, 1);
236
237 return tm;
238 }
239
240 /* ------------------------------------------------------------------ */
241
242 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
243 u32 freq)
244 {
245 struct tda18271_priv *priv = fe->tuner_priv;
246 struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
247 unsigned char *regs = priv->tda18271_regs;
248 int i, ret;
249 u8 tm_current, dc_over_dt, rf_tab;
250 s32 rfcal_comp, approx;
251
252 /* power up */
253 ret = tda18271_set_standby_mode(fe, 0, 0, 0);
254 if (tda_fail(ret))
255 goto fail;
256
257 /* read die current temperature */
258 tm_current = tda18271_read_thermometer(fe);
259
260 /* frequency dependent parameters */
261
262 tda18271_calc_rf_cal(fe, &freq);
263 rf_tab = regs[R_EB14];
264
265 i = tda18271_lookup_rf_band(fe, &freq, NULL);
266 if (tda_fail(i))
267 return i;
268
269 if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
270 approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) +
271 map[i].rf_b1 + rf_tab;
272 } else {
273 approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) +
274 map[i].rf_b2 + rf_tab;
275 }
276
277 if (approx < 0)
278 approx = 0;
279 if (approx > 255)
280 approx = 255;
281
282 tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
283
284 /* calculate temperature compensation */
285 rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000;
286
287 regs[R_EB14] = (unsigned char)(approx + rfcal_comp);
288 ret = tda18271_write_regs(fe, R_EB14, 1);
289 fail:
290 return ret;
291 }
292
293 static int tda18271_por(struct dvb_frontend *fe)
294 {
295 struct tda18271_priv *priv = fe->tuner_priv;
296 unsigned char *regs = priv->tda18271_regs;
297 int ret;
298
299 /* power up detector 1 */
300 regs[R_EB12] &= ~0x20;
301 ret = tda18271_write_regs(fe, R_EB12, 1);
302 if (tda_fail(ret))
303 goto fail;
304
305 regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
306 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
307 ret = tda18271_write_regs(fe, R_EB18, 1);
308 if (tda_fail(ret))
309 goto fail;
310
311 regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
312
313 /* POR mode */
314 ret = tda18271_set_standby_mode(fe, 1, 0, 0);
315 if (tda_fail(ret))
316 goto fail;
317
318 /* disable 1.5 MHz low pass filter */
319 regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
320 regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
321 ret = tda18271_write_regs(fe, R_EB21, 3);
322 fail:
323 return ret;
324 }
325
326 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
327 {
328 struct tda18271_priv *priv = fe->tuner_priv;
329 unsigned char *regs = priv->tda18271_regs;
330 u32 N;
331
332 /* set CAL mode to normal */
333 regs[R_EP4] &= ~0x03;
334 tda18271_write_regs(fe, R_EP4, 1);
335
336 /* switch off agc1 */
337 regs[R_EP3] |= 0x40; /* sm_lt = 1 */
338
339 regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
340 tda18271_write_regs(fe, R_EB18, 1);
341
342 /* frequency dependent parameters */
343
344 tda18271_calc_bp_filter(fe, &freq);
345 tda18271_calc_gain_taper(fe, &freq);
346 tda18271_calc_rf_band(fe, &freq);
347 tda18271_calc_km(fe, &freq);
348
349 tda18271_write_regs(fe, R_EP1, 3);
350 tda18271_write_regs(fe, R_EB13, 1);
351
352 /* main pll charge pump source */
353 tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
354
355 /* cal pll charge pump source */
356 tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
357
358 /* force dcdc converter to 0 V */
359 regs[R_EB14] = 0x00;
360 tda18271_write_regs(fe, R_EB14, 1);
361
362 /* disable plls lock */
363 regs[R_EB20] &= ~0x20;
364 tda18271_write_regs(fe, R_EB20, 1);
365
366 /* set CAL mode to RF tracking filter calibration */
367 regs[R_EP4] |= 0x03;
368 tda18271_write_regs(fe, R_EP4, 2);
369
370 /* --------------------------------------------------------------- */
371
372 /* set the internal calibration signal */
373 N = freq;
374
375 tda18271_calc_cal_pll(fe, N);
376 tda18271_write_regs(fe, R_CPD, 4);
377
378 /* downconvert internal calibration */
379 N += 1000000;
380
381 tda18271_calc_main_pll(fe, N);
382 tda18271_write_regs(fe, R_MPD, 4);
383
384 msleep(5);
385
386 tda18271_write_regs(fe, R_EP2, 1);
387 tda18271_write_regs(fe, R_EP1, 1);
388 tda18271_write_regs(fe, R_EP2, 1);
389 tda18271_write_regs(fe, R_EP1, 1);
390
391 /* --------------------------------------------------------------- */
392
393 /* normal operation for the main pll */
394 tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
395
396 /* normal operation for the cal pll */
397 tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
398
399 msleep(10); /* plls locking */
400
401 /* launch the rf tracking filters calibration */
402 regs[R_EB20] |= 0x20;
403 tda18271_write_regs(fe, R_EB20, 1);
404
405 msleep(60); /* calibration */
406
407 /* --------------------------------------------------------------- */
408
409 /* set CAL mode to normal */
410 regs[R_EP4] &= ~0x03;
411
412 /* switch on agc1 */
413 regs[R_EP3] &= ~0x40; /* sm_lt = 0 */
414
415 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
416 tda18271_write_regs(fe, R_EB18, 1);
417
418 tda18271_write_regs(fe, R_EP3, 2);
419
420 /* synchronization */
421 tda18271_write_regs(fe, R_EP1, 1);
422
423 /* get calibration result */
424 tda18271_read_extended(fe);
425
426 return regs[R_EB14];
427 }
428
429 static int tda18271_powerscan(struct dvb_frontend *fe,
430 u32 *freq_in, u32 *freq_out)
431 {
432 struct tda18271_priv *priv = fe->tuner_priv;
433 unsigned char *regs = priv->tda18271_regs;
434 int sgn, bcal, count, wait, ret;
435 u8 cid_target;
436 u16 count_limit;
437 u32 freq;
438
439 freq = *freq_in;
440
441 tda18271_calc_rf_band(fe, &freq);
442 tda18271_calc_rf_cal(fe, &freq);
443 tda18271_calc_gain_taper(fe, &freq);
444 tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
445
446 tda18271_write_regs(fe, R_EP2, 1);
447 tda18271_write_regs(fe, R_EB14, 1);
448
449 /* downconvert frequency */
450 freq += 1000000;
451
452 tda18271_calc_main_pll(fe, freq);
453 tda18271_write_regs(fe, R_MPD, 4);
454
455 msleep(5); /* pll locking */
456
457 /* detection mode */
458 regs[R_EP4] &= ~0x03;
459 regs[R_EP4] |= 0x01;
460 tda18271_write_regs(fe, R_EP4, 1);
461
462 /* launch power detection measurement */
463 tda18271_write_regs(fe, R_EP2, 1);
464
465 /* read power detection info, stored in EB10 */
466 ret = tda18271_read_extended(fe);
467 if (tda_fail(ret))
468 return ret;
469
470 /* algorithm initialization */
471 sgn = 1;
472 *freq_out = *freq_in;
473 bcal = 0;
474 count = 0;
475 wait = false;
476
477 while ((regs[R_EB10] & 0x3f) < cid_target) {
478 /* downconvert updated freq to 1 MHz */
479 freq = *freq_in + (sgn * count) + 1000000;
480
481 tda18271_calc_main_pll(fe, freq);
482 tda18271_write_regs(fe, R_MPD, 4);
483
484 if (wait) {
485 msleep(5); /* pll locking */
486 wait = false;
487 } else
488 udelay(100); /* pll locking */
489
490 /* launch power detection measurement */
491 tda18271_write_regs(fe, R_EP2, 1);
492
493 /* read power detection info, stored in EB10 */
494 ret = tda18271_read_extended(fe);
495 if (tda_fail(ret))
496 return ret;
497
498 count += 200;
499
500 if (count <= count_limit)
501 continue;
502
503 if (sgn <= 0)
504 break;
505
506 sgn = -1 * sgn;
507 count = 200;
508 wait = true;
509 }
510
511 if ((regs[R_EB10] & 0x3f) >= cid_target) {
512 bcal = 1;
513 *freq_out = freq - 1000000;
514 } else
515 bcal = 0;
516
517 tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
518 bcal, *freq_in, *freq_out, freq);
519
520 return bcal;
521 }
522
523 static int tda18271_powerscan_init(struct dvb_frontend *fe)
524 {
525 struct tda18271_priv *priv = fe->tuner_priv;
526 unsigned char *regs = priv->tda18271_regs;
527 int ret;
528
529 /* set standard to digital */
530 regs[R_EP3] &= ~0x1f; /* clear std bits */
531 regs[R_EP3] |= 0x12;
532
533 /* set cal mode to normal */
534 regs[R_EP4] &= ~0x03;
535
536 /* update IF output level */
537 regs[R_EP4] &= ~0x1c; /* clear if level bits */
538
539 ret = tda18271_write_regs(fe, R_EP3, 2);
540 if (tda_fail(ret))
541 goto fail;
542
543 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
544 ret = tda18271_write_regs(fe, R_EB18, 1);
545 if (tda_fail(ret))
546 goto fail;
547
548 regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
549
550 /* 1.5 MHz low pass filter */
551 regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
552 regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
553
554 ret = tda18271_write_regs(fe, R_EB21, 3);
555 fail:
556 return ret;
557 }
558
559 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
560 {
561 struct tda18271_priv *priv = fe->tuner_priv;
562 struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
563 unsigned char *regs = priv->tda18271_regs;
564 int bcal, rf, i;
565 s32 divisor, dividend;
566 #define RF1 0
567 #define RF2 1
568 #define RF3 2
569 u32 rf_default[3];
570 u32 rf_freq[3];
571 s32 prog_cal[3];
572 s32 prog_tab[3];
573
574 i = tda18271_lookup_rf_band(fe, &freq, NULL);
575
576 if (tda_fail(i))
577 return i;
578
579 rf_default[RF1] = 1000 * map[i].rf1_def;
580 rf_default[RF2] = 1000 * map[i].rf2_def;
581 rf_default[RF3] = 1000 * map[i].rf3_def;
582
583 for (rf = RF1; rf <= RF3; rf++) {
584 if (0 == rf_default[rf])
585 return 0;
586 tda_cal("freq = %d, rf = %d\n", freq, rf);
587
588 /* look for optimized calibration frequency */
589 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
590 if (tda_fail(bcal))
591 return bcal;
592
593 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
594 prog_tab[rf] = (s32)regs[R_EB14];
595
596 if (1 == bcal)
597 prog_cal[rf] =
598 (s32)tda18271_calibrate_rf(fe, rf_freq[rf]);
599 else
600 prog_cal[rf] = prog_tab[rf];
601
602 switch (rf) {
603 case RF1:
604 map[i].rf_a1 = 0;
605 map[i].rf_b1 = (prog_cal[RF1] - prog_tab[RF1]);
606 map[i].rf1 = rf_freq[RF1] / 1000;
607 break;
608 case RF2:
609 dividend = (prog_cal[RF2] - prog_tab[RF2] -
610 prog_cal[RF1] + prog_tab[RF1]);
611 divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000;
612 map[i].rf_a1 = (dividend / divisor);
613 map[i].rf2 = rf_freq[RF2] / 1000;
614 break;
615 case RF3:
616 dividend = (prog_cal[RF3] - prog_tab[RF3] -
617 prog_cal[RF2] + prog_tab[RF2]);
618 divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000;
619 map[i].rf_a2 = (dividend / divisor);
620 map[i].rf_b2 = (prog_cal[RF2] - prog_tab[RF2]);
621 map[i].rf3 = rf_freq[RF3] / 1000;
622 break;
623 default:
624 BUG();
625 }
626 }
627
628 return 0;
629 }
630
631 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
632 {
633 struct tda18271_priv *priv = fe->tuner_priv;
634 unsigned int i;
635 int ret;
636
637 tda_info("performing RF tracking filter calibration\n");
638
639 /* wait for die temperature stabilization */
640 msleep(200);
641
642 ret = tda18271_powerscan_init(fe);
643 if (tda_fail(ret))
644 goto fail;
645
646 /* rf band calibration */
647 for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
648 ret =
649 tda18271_rf_tracking_filters_init(fe, 1000 *
650 priv->rf_cal_state[i].rfmax);
651 if (tda_fail(ret))
652 goto fail;
653 }
654
655 priv->tm_rfcal = tda18271_read_thermometer(fe);
656 fail:
657 return ret;
658 }
659
660 /* ------------------------------------------------------------------ */
661
662 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
663 {
664 struct tda18271_priv *priv = fe->tuner_priv;
665 unsigned char *regs = priv->tda18271_regs;
666 int ret;
667
668 /* test RF_CAL_OK to see if we need init */
669 if ((regs[R_EP1] & 0x10) == 0)
670 priv->cal_initialized = false;
671
672 if (priv->cal_initialized)
673 return 0;
674
675 ret = tda18271_calc_rf_filter_curve(fe);
676 if (tda_fail(ret))
677 goto fail;
678
679 ret = tda18271_por(fe);
680 if (tda_fail(ret))
681 goto fail;
682
683 tda_info("RF tracking filter calibration complete\n");
684
685 priv->cal_initialized = true;
686 goto end;
687 fail:
688 tda_info("RF tracking filter calibration failed!\n");
689 end:
690 return ret;
691 }
692
693 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
694 u32 freq, u32 bw)
695 {
696 struct tda18271_priv *priv = fe->tuner_priv;
697 unsigned char *regs = priv->tda18271_regs;
698 int ret;
699 u32 N = 0;
700
701 /* calculate bp filter */
702 tda18271_calc_bp_filter(fe, &freq);
703 tda18271_write_regs(fe, R_EP1, 1);
704
705 regs[R_EB4] &= 0x07;
706 regs[R_EB4] |= 0x60;
707 tda18271_write_regs(fe, R_EB4, 1);
708
709 regs[R_EB7] = 0x60;
710 tda18271_write_regs(fe, R_EB7, 1);
711
712 regs[R_EB14] = 0x00;
713 tda18271_write_regs(fe, R_EB14, 1);
714
715 regs[R_EB20] = 0xcc;
716 tda18271_write_regs(fe, R_EB20, 1);
717
718 /* set cal mode to RF tracking filter calibration */
719 regs[R_EP4] |= 0x03;
720
721 /* calculate cal pll */
722
723 switch (priv->mode) {
724 case TDA18271_ANALOG:
725 N = freq - 1250000;
726 break;
727 case TDA18271_DIGITAL:
728 N = freq + bw / 2;
729 break;
730 }
731
732 tda18271_calc_cal_pll(fe, N);
733
734 /* calculate main pll */
735
736 switch (priv->mode) {
737 case TDA18271_ANALOG:
738 N = freq - 250000;
739 break;
740 case TDA18271_DIGITAL:
741 N = freq + bw / 2 + 1000000;
742 break;
743 }
744
745 tda18271_calc_main_pll(fe, N);
746
747 ret = tda18271_write_regs(fe, R_EP3, 11);
748 if (tda_fail(ret))
749 return ret;
750
751 msleep(5); /* RF tracking filter calibration initialization */
752
753 /* search for K,M,CO for RF calibration */
754 tda18271_calc_km(fe, &freq);
755 tda18271_write_regs(fe, R_EB13, 1);
756
757 /* search for rf band */
758 tda18271_calc_rf_band(fe, &freq);
759
760 /* search for gain taper */
761 tda18271_calc_gain_taper(fe, &freq);
762
763 tda18271_write_regs(fe, R_EP2, 1);
764 tda18271_write_regs(fe, R_EP1, 1);
765 tda18271_write_regs(fe, R_EP2, 1);
766 tda18271_write_regs(fe, R_EP1, 1);
767
768 regs[R_EB4] &= 0x07;
769 regs[R_EB4] |= 0x40;
770 tda18271_write_regs(fe, R_EB4, 1);
771
772 regs[R_EB7] = 0x40;
773 tda18271_write_regs(fe, R_EB7, 1);
774 msleep(10); /* pll locking */
775
776 regs[R_EB20] = 0xec;
777 tda18271_write_regs(fe, R_EB20, 1);
778 msleep(60); /* RF tracking filter calibration completion */
779
780 regs[R_EP4] &= ~0x03; /* set cal mode to normal */
781 tda18271_write_regs(fe, R_EP4, 1);
782
783 tda18271_write_regs(fe, R_EP1, 1);
784
785 /* RF tracking filter correction for VHF_Low band */
786 if (0 == tda18271_calc_rf_cal(fe, &freq))
787 tda18271_write_regs(fe, R_EB14, 1);
788
789 return 0;
790 }
791
792 /* ------------------------------------------------------------------ */
793
794 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
795 {
796 struct tda18271_priv *priv = fe->tuner_priv;
797 unsigned char *regs = priv->tda18271_regs;
798 int ret;
799
800 ret = tda18271_read_regs(fe);
801 if (tda_fail(ret))
802 goto fail;
803
804 /* test IR_CAL_OK to see if we need init */
805 if ((regs[R_EP1] & 0x08) == 0)
806 ret = tda18271_init_regs(fe);
807 fail:
808 return ret;
809 }
810
811 static int tda18271_init(struct dvb_frontend *fe)
812 {
813 struct tda18271_priv *priv = fe->tuner_priv;
814 int ret;
815
816 mutex_lock(&priv->lock);
817
818 /* full power up */
819 ret = tda18271_set_standby_mode(fe, 0, 0, 0);
820 if (tda_fail(ret))
821 goto fail;
822
823 /* initialization */
824 ret = tda18271_ir_cal_init(fe);
825 if (tda_fail(ret))
826 goto fail;
827
828 if (priv->id == TDA18271HDC2)
829 tda18271c2_rf_cal_init(fe);
830 fail:
831 mutex_unlock(&priv->lock);
832
833 return ret;
834 }
835
836 static int tda18271_sleep(struct dvb_frontend *fe)
837 {
838 struct tda18271_priv *priv = fe->tuner_priv;
839 int ret;
840
841 mutex_lock(&priv->lock);
842
843 /* enter standby mode, with required output features enabled */
844 ret = tda18271_toggle_output(fe, 1);
845
846 mutex_unlock(&priv->lock);
847
848 return ret;
849 }
850
851 /* ------------------------------------------------------------------ */
852
853 static int tda18271_agc(struct dvb_frontend *fe)
854 {
855 struct tda18271_priv *priv = fe->tuner_priv;
856 int ret = 0;
857
858 switch (priv->config) {
859 case TDA8290_LNA_OFF:
860 /* no external agc configuration required */
861 if (tda18271_debug & DBG_ADV)
862 tda_dbg("no agc configuration provided\n");
863 break;
864 case TDA8290_LNA_ON_BRIDGE:
865 /* switch with GPIO of saa713x */
866 tda_dbg("invoking callback\n");
867 if (fe->callback)
868 ret = fe->callback(priv->i2c_props.adap->algo_data,
869 DVB_FRONTEND_COMPONENT_TUNER,
870 TDA18271_CALLBACK_CMD_AGC_ENABLE,
871 priv->mode);
872 break;
873 case TDA8290_LNA_GP0_HIGH_ON:
874 case TDA8290_LNA_GP0_HIGH_OFF:
875 default:
876 /* n/a - currently not supported */
877 tda_err("unsupported configuration: %d\n", priv->config);
878 ret = -EINVAL;
879 break;
880 }
881 return ret;
882 }
883
884 static int tda18271_tune(struct dvb_frontend *fe,
885 struct tda18271_std_map_item *map, u32 freq, u32 bw)
886 {
887 struct tda18271_priv *priv = fe->tuner_priv;
888 int ret;
889
890 tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
891 freq, map->if_freq, bw, map->agc_mode, map->std);
892
893 ret = tda18271_agc(fe);
894 if (tda_fail(ret))
895 tda_warn("failed to configure agc\n");
896
897 ret = tda18271_init(fe);
898 if (tda_fail(ret))
899 goto fail;
900
901 mutex_lock(&priv->lock);
902
903 switch (priv->id) {
904 case TDA18271HDC1:
905 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
906 break;
907 case TDA18271HDC2:
908 tda18271c2_rf_tracking_filters_correction(fe, freq);
909 break;
910 }
911 ret = tda18271_channel_configuration(fe, map, freq, bw);
912
913 mutex_unlock(&priv->lock);
914 fail:
915 return ret;
916 }
917
918 /* ------------------------------------------------------------------ */
919
920 static int tda18271_set_params(struct dvb_frontend *fe)
921 {
922 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
923 u32 delsys = c->delivery_system;
924 u32 bw = c->bandwidth_hz;
925 u32 freq = c->frequency;
926 struct tda18271_priv *priv = fe->tuner_priv;
927 struct tda18271_std_map *std_map = &priv->std;
928 struct tda18271_std_map_item *map;
929 int ret;
930
931 priv->mode = TDA18271_DIGITAL;
932
933 switch (delsys) {
934 case SYS_ATSC:
935 map = &std_map->atsc_6;
936 bw = 6000000;
937 break;
938 case SYS_ISDBT:
939 case SYS_DVBT:
940 case SYS_DVBT2:
941 if (bw <= 6000000) {
942 map = &std_map->dvbt_6;
943 } else if (bw <= 7000000) {
944 map = &std_map->dvbt_7;
945 } else {
946 map = &std_map->dvbt_8;
947 }
948 break;
949 case SYS_DVBC_ANNEX_B:
950 bw = 6000000;
951 fallthrough;
952 case SYS_DVBC_ANNEX_A:
953 case SYS_DVBC_ANNEX_C:
954 if (bw <= 6000000) {
955 map = &std_map->qam_6;
956 } else if (bw <= 7000000) {
957 map = &std_map->qam_7;
958 } else {
959 map = &std_map->qam_8;
960 }
961 break;
962 default:
963 tda_warn("modulation type not supported!\n");
964 return -EINVAL;
965 }
966
967 /* When tuning digital, the analog demod must be tri-stated */
968 if (fe->ops.analog_ops.standby)
969 fe->ops.analog_ops.standby(fe);
970
971 ret = tda18271_tune(fe, map, freq, bw);
972
973 if (tda_fail(ret))
974 goto fail;
975
976 priv->if_freq = map->if_freq;
977 priv->frequency = freq;
978 priv->bandwidth = bw;
979 fail:
980 return ret;
981 }
982
983 static int tda18271_set_analog_params(struct dvb_frontend *fe,
984 struct analog_parameters *params)
985 {
986 struct tda18271_priv *priv = fe->tuner_priv;
987 struct tda18271_std_map *std_map = &priv->std;
988 struct tda18271_std_map_item *map;
989 char *mode;
990 int ret;
991 u32 freq = params->frequency * 125 *
992 ((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2;
993
994 priv->mode = TDA18271_ANALOG;
995
996 if (params->mode == V4L2_TUNER_RADIO) {
997 map = &std_map->fm_radio;
998 mode = "fm";
999 } else if (params->std & V4L2_STD_MN) {
1000 map = &std_map->atv_mn;
1001 mode = "MN";
1002 } else if (params->std & V4L2_STD_B) {
1003 map = &std_map->atv_b;
1004 mode = "B";
1005 } else if (params->std & V4L2_STD_GH) {
1006 map = &std_map->atv_gh;
1007 mode = "GH";
1008 } else if (params->std & V4L2_STD_PAL_I) {
1009 map = &std_map->atv_i;
1010 mode = "I";
1011 } else if (params->std & V4L2_STD_DK) {
1012 map = &std_map->atv_dk;
1013 mode = "DK";
1014 } else if (params->std & V4L2_STD_SECAM_L) {
1015 map = &std_map->atv_l;
1016 mode = "L";
1017 } else if (params->std & V4L2_STD_SECAM_LC) {
1018 map = &std_map->atv_lc;
1019 mode = "L'";
1020 } else {
1021 map = &std_map->atv_i;
1022 mode = "xx";
1023 }
1024
1025 tda_dbg("setting tda18271 to system %s\n", mode);
1026
1027 ret = tda18271_tune(fe, map, freq, 0);
1028
1029 if (tda_fail(ret))
1030 goto fail;
1031
1032 priv->if_freq = map->if_freq;
1033 priv->frequency = freq;
1034 priv->bandwidth = 0;
1035 fail:
1036 return ret;
1037 }
1038
1039 static void tda18271_release(struct dvb_frontend *fe)
1040 {
1041 struct tda18271_priv *priv = fe->tuner_priv;
1042
1043 mutex_lock(&tda18271_list_mutex);
1044
1045 if (priv)
1046 hybrid_tuner_release_state(priv);
1047
1048 mutex_unlock(&tda18271_list_mutex);
1049
1050 fe->tuner_priv = NULL;
1051 }
1052
1053 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1054 {
1055 struct tda18271_priv *priv = fe->tuner_priv;
1056 *frequency = priv->frequency;
1057 return 0;
1058 }
1059
1060 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1061 {
1062 struct tda18271_priv *priv = fe->tuner_priv;
1063 *bandwidth = priv->bandwidth;
1064 return 0;
1065 }
1066
1067 static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
1068 {
1069 struct tda18271_priv *priv = fe->tuner_priv;
1070 *frequency = (u32)priv->if_freq * 1000;
1071 return 0;
1072 }
1073
1074 /* ------------------------------------------------------------------ */
1075
1076 #define tda18271_update_std(std_cfg, name) do { \
1077 if (map->std_cfg.if_freq + \
1078 map->std_cfg.agc_mode + map->std_cfg.std + \
1079 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) { \
1080 tda_dbg("Using custom std config for %s\n", name); \
1081 memcpy(&std->std_cfg, &map->std_cfg, \
1082 sizeof(struct tda18271_std_map_item)); \
1083 } } while (0)
1084
1085 #define tda18271_dump_std_item(std_cfg, name) do { \
1086 tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, " \
1087 "if_lvl = %d, rfagc_top = 0x%02x\n", \
1088 name, std->std_cfg.if_freq, \
1089 std->std_cfg.agc_mode, std->std_cfg.std, \
1090 std->std_cfg.if_lvl, std->std_cfg.rfagc_top); \
1091 } while (0)
1092
1093 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1094 {
1095 struct tda18271_priv *priv = fe->tuner_priv;
1096 struct tda18271_std_map *std = &priv->std;
1097
1098 tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1099 tda18271_dump_std_item(fm_radio, " fm ");
1100 tda18271_dump_std_item(atv_b, "atv b ");
1101 tda18271_dump_std_item(atv_dk, "atv dk");
1102 tda18271_dump_std_item(atv_gh, "atv gh");
1103 tda18271_dump_std_item(atv_i, "atv i ");
1104 tda18271_dump_std_item(atv_l, "atv l ");
1105 tda18271_dump_std_item(atv_lc, "atv l'");
1106 tda18271_dump_std_item(atv_mn, "atv mn");
1107 tda18271_dump_std_item(atsc_6, "atsc 6");
1108 tda18271_dump_std_item(dvbt_6, "dvbt 6");
1109 tda18271_dump_std_item(dvbt_7, "dvbt 7");
1110 tda18271_dump_std_item(dvbt_8, "dvbt 8");
1111 tda18271_dump_std_item(qam_6, "qam 6 ");
1112 tda18271_dump_std_item(qam_7, "qam 7 ");
1113 tda18271_dump_std_item(qam_8, "qam 8 ");
1114
1115 return 0;
1116 }
1117
1118 static int tda18271_update_std_map(struct dvb_frontend *fe,
1119 struct tda18271_std_map *map)
1120 {
1121 struct tda18271_priv *priv = fe->tuner_priv;
1122 struct tda18271_std_map *std = &priv->std;
1123
1124 if (!map)
1125 return -EINVAL;
1126
1127 tda18271_update_std(fm_radio, "fm");
1128 tda18271_update_std(atv_b, "atv b");
1129 tda18271_update_std(atv_dk, "atv dk");
1130 tda18271_update_std(atv_gh, "atv gh");
1131 tda18271_update_std(atv_i, "atv i");
1132 tda18271_update_std(atv_l, "atv l");
1133 tda18271_update_std(atv_lc, "atv l'");
1134 tda18271_update_std(atv_mn, "atv mn");
1135 tda18271_update_std(atsc_6, "atsc 6");
1136 tda18271_update_std(dvbt_6, "dvbt 6");
1137 tda18271_update_std(dvbt_7, "dvbt 7");
1138 tda18271_update_std(dvbt_8, "dvbt 8");
1139 tda18271_update_std(qam_6, "qam 6");
1140 tda18271_update_std(qam_7, "qam 7");
1141 tda18271_update_std(qam_8, "qam 8");
1142
1143 return 0;
1144 }
1145
1146 static int tda18271_get_id(struct dvb_frontend *fe)
1147 {
1148 struct tda18271_priv *priv = fe->tuner_priv;
1149 unsigned char *regs = priv->tda18271_regs;
1150 char *name;
1151 int ret;
1152
1153 mutex_lock(&priv->lock);
1154 ret = tda18271_read_regs(fe);
1155 mutex_unlock(&priv->lock);
1156
1157 if (ret) {
1158 tda_info("Error reading device ID @ %d-%04x, bailing out.\n",
1159 i2c_adapter_id(priv->i2c_props.adap),
1160 priv->i2c_props.addr);
1161 return -EIO;
1162 }
1163
1164 switch (regs[R_ID] & 0x7f) {
1165 case 3:
1166 name = "TDA18271HD/C1";
1167 priv->id = TDA18271HDC1;
1168 break;
1169 case 4:
1170 name = "TDA18271HD/C2";
1171 priv->id = TDA18271HDC2;
1172 break;
1173 default:
1174 tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n",
1175 regs[R_ID], i2c_adapter_id(priv->i2c_props.adap),
1176 priv->i2c_props.addr);
1177 return -EINVAL;
1178 }
1179
1180 tda_info("%s detected @ %d-%04x\n", name,
1181 i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr);
1182
1183 return 0;
1184 }
1185
1186 static int tda18271_setup_configuration(struct dvb_frontend *fe,
1187 struct tda18271_config *cfg)
1188 {
1189 struct tda18271_priv *priv = fe->tuner_priv;
1190
1191 priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1192 priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1193 priv->config = (cfg) ? cfg->config : 0;
1194 priv->small_i2c = (cfg) ?
1195 cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT;
1196 priv->output_opt = (cfg) ?
1197 cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON;
1198
1199 return 0;
1200 }
1201
1202 static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg)
1203 {
1204 /* tda18271_cal_on_startup == -1 when cal module option is unset */
1205 return ((tda18271_cal_on_startup == -1) ?
1206 /* honor configuration setting */
1207 ((cfg) && (cfg->rf_cal_on_startup)) :
1208 /* module option overrides configuration setting */
1209 (tda18271_cal_on_startup)) ? 1 : 0;
1210 }
1211
1212 static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg)
1213 {
1214 struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg;
1215
1216 tda18271_setup_configuration(fe, cfg);
1217
1218 if (tda18271_need_cal_on_startup(cfg))
1219 tda18271_init(fe);
1220
1221 /* override default std map with values in config struct */
1222 if ((cfg) && (cfg->std_map))
1223 tda18271_update_std_map(fe, cfg->std_map);
1224
1225 return 0;
1226 }
1227
1228 static const struct dvb_tuner_ops tda18271_tuner_ops = {
1229 .info = {
1230 .name = "NXP TDA18271HD",
1231 .frequency_min_hz = 45 * MHz,
1232 .frequency_max_hz = 864 * MHz,
1233 .frequency_step_hz = 62500
1234 },
1235 .init = tda18271_init,
1236 .sleep = tda18271_sleep,
1237 .set_params = tda18271_set_params,
1238 .set_analog_params = tda18271_set_analog_params,
1239 .release = tda18271_release,
1240 .set_config = tda18271_set_config,
1241 .get_frequency = tda18271_get_frequency,
1242 .get_bandwidth = tda18271_get_bandwidth,
1243 .get_if_frequency = tda18271_get_if_frequency,
1244 };
1245
1246 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1247 struct i2c_adapter *i2c,
1248 struct tda18271_config *cfg)
1249 {
1250 struct tda18271_priv *priv = NULL;
1251 int instance, ret;
1252
1253 mutex_lock(&tda18271_list_mutex);
1254
1255 instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1256 hybrid_tuner_instance_list,
1257 i2c, addr, "tda18271");
1258 switch (instance) {
1259 case 0:
1260 goto fail;
1261 case 1:
1262 /* new tuner instance */
1263 fe->tuner_priv = priv;
1264
1265 tda18271_setup_configuration(fe, cfg);
1266
1267 priv->cal_initialized = false;
1268 mutex_init(&priv->lock);
1269
1270 ret = tda18271_get_id(fe);
1271 if (tda_fail(ret))
1272 goto fail;
1273
1274 ret = tda18271_assign_map_layout(fe);
1275 if (tda_fail(ret))
1276 goto fail;
1277
1278 /* if delay_cal is set, delay IR & RF calibration until init()
1279 * module option 'cal' overrides this delay */
1280 if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg)))
1281 break;
1282
1283 mutex_lock(&priv->lock);
1284 tda18271_init_regs(fe);
1285
1286 if ((tda18271_need_cal_on_startup(cfg)) &&
1287 (priv->id == TDA18271HDC2))
1288 tda18271c2_rf_cal_init(fe);
1289
1290 /* enter standby mode, with required output features enabled */
1291 ret = tda18271_toggle_output(fe, 1);
1292 tda_fail(ret);
1293
1294 mutex_unlock(&priv->lock);
1295 break;
1296 default:
1297 /* existing tuner instance */
1298 fe->tuner_priv = priv;
1299
1300 /* allow dvb driver to override configuration settings */
1301 if (cfg) {
1302 if (cfg->gate != TDA18271_GATE_ANALOG)
1303 priv->gate = cfg->gate;
1304 if (cfg->role)
1305 priv->role = cfg->role;
1306 if (cfg->config)
1307 priv->config = cfg->config;
1308 if (cfg->small_i2c)
1309 priv->small_i2c = cfg->small_i2c;
1310 if (cfg->output_opt)
1311 priv->output_opt = cfg->output_opt;
1312 if (cfg->std_map)
1313 tda18271_update_std_map(fe, cfg->std_map);
1314 }
1315 if (tda18271_need_cal_on_startup(cfg))
1316 tda18271_init(fe);
1317 break;
1318 }
1319
1320 /* override default std map with values in config struct */
1321 if ((cfg) && (cfg->std_map))
1322 tda18271_update_std_map(fe, cfg->std_map);
1323
1324 mutex_unlock(&tda18271_list_mutex);
1325
1326 memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1327 sizeof(struct dvb_tuner_ops));
1328
1329 if (tda18271_debug & (DBG_MAP | DBG_ADV))
1330 tda18271_dump_std_map(fe);
1331
1332 return fe;
1333 fail:
1334 mutex_unlock(&tda18271_list_mutex);
1335
1336 tda18271_release(fe);
1337 return NULL;
1338 }
1339 EXPORT_SYMBOL_GPL(tda18271_attach);
1340 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1341 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1342 MODULE_LICENSE("GPL");
1343 MODULE_VERSION("0.4");
Linux with added FPC-III support