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Diffstat (limited to 'drivers/media/common/tuners/tda18271-fe.c')
-rw-r--r--drivers/media/common/tuners/tda18271-fe.c1153
1 files changed, 1153 insertions, 0 deletions
diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c
new file mode 100644
index 000000000000..b262100ae897
--- /dev/null
+++ b/drivers/media/common/tuners/tda18271-fe.c
@@ -0,0 +1,1153 @@
1/*
2 tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
3
4 Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19*/
20
21#include <linux/delay.h>
22#include <linux/videodev2.h>
23#include "tda18271-priv.h"
24
25int tda18271_debug;
26module_param_named(debug, tda18271_debug, int, 0644);
27MODULE_PARM_DESC(debug, "set debug level "
28 "(info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
29
30static int tda18271_cal_on_startup;
31module_param_named(cal, tda18271_cal_on_startup, int, 0644);
32MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
33
34static DEFINE_MUTEX(tda18271_list_mutex);
35static LIST_HEAD(hybrid_tuner_instance_list);
36
37/*---------------------------------------------------------------------*/
38
39static inline int charge_pump_source(struct dvb_frontend *fe, int force)
40{
41 struct tda18271_priv *priv = fe->tuner_priv;
42 return tda18271_charge_pump_source(fe,
43 (priv->role == TDA18271_SLAVE) ?
44 TDA18271_CAL_PLL :
45 TDA18271_MAIN_PLL, force);
46}
47
48static int tda18271_channel_configuration(struct dvb_frontend *fe,
49 struct tda18271_std_map_item *map,
50 u32 freq, u32 bw)
51{
52 struct tda18271_priv *priv = fe->tuner_priv;
53 unsigned char *regs = priv->tda18271_regs;
54 u32 N;
55
56 /* update TV broadcast parameters */
57
58 /* set standard */
59 regs[R_EP3] &= ~0x1f; /* clear std bits */
60 regs[R_EP3] |= (map->agc_mode << 3) | map->std;
61
62 /* set rfagc to high speed mode */
63 regs[R_EP3] &= ~0x04;
64
65 /* set cal mode to normal */
66 regs[R_EP4] &= ~0x03;
67
68 /* update IF output level & IF notch frequency */
69 regs[R_EP4] &= ~0x1c; /* clear if level bits */
70 regs[R_EP4] |= (map->if_lvl << 2);
71
72 switch (priv->mode) {
73 case TDA18271_ANALOG:
74 regs[R_MPD] &= ~0x80; /* IF notch = 0 */
75 break;
76 case TDA18271_DIGITAL:
77 regs[R_MPD] |= 0x80; /* IF notch = 1 */
78 break;
79 }
80
81 /* update FM_RFn */
82 regs[R_EP4] &= ~0x80;
83 regs[R_EP4] |= map->fm_rfn << 7;
84
85 /* update rf top / if top */
86 regs[R_EB22] = 0x00;
87 regs[R_EB22] |= map->rfagc_top;
88 tda18271_write_regs(fe, R_EB22, 1);
89
90 /* --------------------------------------------------------------- */
91
92 /* disable Power Level Indicator */
93 regs[R_EP1] |= 0x40;
94
95 /* frequency dependent parameters */
96
97 tda18271_calc_ir_measure(fe, &freq);
98
99 tda18271_calc_bp_filter(fe, &freq);
100
101 tda18271_calc_rf_band(fe, &freq);
102
103 tda18271_calc_gain_taper(fe, &freq);
104
105 /* --------------------------------------------------------------- */
106
107 /* dual tuner and agc1 extra configuration */
108
109 switch (priv->role) {
110 case TDA18271_MASTER:
111 regs[R_EB1] |= 0x04; /* main vco */
112 break;
113 case TDA18271_SLAVE:
114 regs[R_EB1] &= ~0x04; /* cal vco */
115 break;
116 }
117
118 /* agc1 always active */
119 regs[R_EB1] &= ~0x02;
120
121 /* agc1 has priority on agc2 */
122 regs[R_EB1] &= ~0x01;
123
124 tda18271_write_regs(fe, R_EB1, 1);
125
126 /* --------------------------------------------------------------- */
127
128 N = map->if_freq * 1000 + freq;
129
130 switch (priv->role) {
131 case TDA18271_MASTER:
132 tda18271_calc_main_pll(fe, N);
133 tda18271_write_regs(fe, R_MPD, 4);
134 break;
135 case TDA18271_SLAVE:
136 tda18271_calc_cal_pll(fe, N);
137 tda18271_write_regs(fe, R_CPD, 4);
138
139 regs[R_MPD] = regs[R_CPD] & 0x7f;
140 tda18271_write_regs(fe, R_MPD, 1);
141 break;
142 }
143
144 tda18271_write_regs(fe, R_TM, 7);
145
146 /* force charge pump source */
147 charge_pump_source(fe, 1);
148
149 msleep(1);
150
151 /* return pll to normal operation */
152 charge_pump_source(fe, 0);
153
154 msleep(20);
155
156 /* set rfagc to normal speed mode */
157 if (map->fm_rfn)
158 regs[R_EP3] &= ~0x04;
159 else
160 regs[R_EP3] |= 0x04;
161 tda18271_write_regs(fe, R_EP3, 1);
162
163 return 0;
164}
165
166static int tda18271_read_thermometer(struct dvb_frontend *fe)
167{
168 struct tda18271_priv *priv = fe->tuner_priv;
169 unsigned char *regs = priv->tda18271_regs;
170 int tm;
171
172 /* switch thermometer on */
173 regs[R_TM] |= 0x10;
174 tda18271_write_regs(fe, R_TM, 1);
175
176 /* read thermometer info */
177 tda18271_read_regs(fe);
178
179 if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
180 (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
181
182 if ((regs[R_TM] & 0x20) == 0x20)
183 regs[R_TM] &= ~0x20;
184 else
185 regs[R_TM] |= 0x20;
186
187 tda18271_write_regs(fe, R_TM, 1);
188
189 msleep(10); /* temperature sensing */
190
191 /* read thermometer info */
192 tda18271_read_regs(fe);
193 }
194
195 tm = tda18271_lookup_thermometer(fe);
196
197 /* switch thermometer off */
198 regs[R_TM] &= ~0x10;
199 tda18271_write_regs(fe, R_TM, 1);
200
201 /* set CAL mode to normal */
202 regs[R_EP4] &= ~0x03;
203 tda18271_write_regs(fe, R_EP4, 1);
204
205 return tm;
206}
207
208/* ------------------------------------------------------------------ */
209
210static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
211 u32 freq)
212{
213 struct tda18271_priv *priv = fe->tuner_priv;
214 struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
215 unsigned char *regs = priv->tda18271_regs;
216 int tm_current, rfcal_comp, approx, i;
217 u8 dc_over_dt, rf_tab;
218
219 /* power up */
220 tda18271_set_standby_mode(fe, 0, 0, 0);
221
222 /* read die current temperature */
223 tm_current = tda18271_read_thermometer(fe);
224
225 /* frequency dependent parameters */
226
227 tda18271_calc_rf_cal(fe, &freq);
228 rf_tab = regs[R_EB14];
229
230 i = tda18271_lookup_rf_band(fe, &freq, NULL);
231 if (i < 0)
232 return -EINVAL;
233
234 if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
235 approx = map[i].rf_a1 *
236 (freq / 1000 - map[i].rf1) + map[i].rf_b1 + rf_tab;
237 } else {
238 approx = map[i].rf_a2 *
239 (freq / 1000 - map[i].rf2) + map[i].rf_b2 + rf_tab;
240 }
241
242 if (approx < 0)
243 approx = 0;
244 if (approx > 255)
245 approx = 255;
246
247 tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
248
249 /* calculate temperature compensation */
250 rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal);
251
252 regs[R_EB14] = approx + rfcal_comp;
253 tda18271_write_regs(fe, R_EB14, 1);
254
255 return 0;
256}
257
258static int tda18271_por(struct dvb_frontend *fe)
259{
260 struct tda18271_priv *priv = fe->tuner_priv;
261 unsigned char *regs = priv->tda18271_regs;
262
263 /* power up detector 1 */
264 regs[R_EB12] &= ~0x20;
265 tda18271_write_regs(fe, R_EB12, 1);
266
267 regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
268 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
269 tda18271_write_regs(fe, R_EB18, 1);
270
271 regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
272
273 /* POR mode */
274 tda18271_set_standby_mode(fe, 1, 0, 0);
275
276 /* disable 1.5 MHz low pass filter */
277 regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
278 regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
279 tda18271_write_regs(fe, R_EB21, 3);
280
281 return 0;
282}
283
284static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
285{
286 struct tda18271_priv *priv = fe->tuner_priv;
287 unsigned char *regs = priv->tda18271_regs;
288 u32 N;
289
290 /* set CAL mode to normal */
291 regs[R_EP4] &= ~0x03;
292 tda18271_write_regs(fe, R_EP4, 1);
293
294 /* switch off agc1 */
295 regs[R_EP3] |= 0x40; /* sm_lt = 1 */
296
297 regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
298 tda18271_write_regs(fe, R_EB18, 1);
299
300 /* frequency dependent parameters */
301
302 tda18271_calc_bp_filter(fe, &freq);
303 tda18271_calc_gain_taper(fe, &freq);
304 tda18271_calc_rf_band(fe, &freq);
305 tda18271_calc_km(fe, &freq);
306
307 tda18271_write_regs(fe, R_EP1, 3);
308 tda18271_write_regs(fe, R_EB13, 1);
309
310 /* main pll charge pump source */
311 tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
312
313 /* cal pll charge pump source */
314 tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
315
316 /* force dcdc converter to 0 V */
317 regs[R_EB14] = 0x00;
318 tda18271_write_regs(fe, R_EB14, 1);
319
320 /* disable plls lock */
321 regs[R_EB20] &= ~0x20;
322 tda18271_write_regs(fe, R_EB20, 1);
323
324 /* set CAL mode to RF tracking filter calibration */
325 regs[R_EP4] |= 0x03;
326 tda18271_write_regs(fe, R_EP4, 2);
327
328 /* --------------------------------------------------------------- */
329
330 /* set the internal calibration signal */
331 N = freq;
332
333 tda18271_calc_cal_pll(fe, N);
334 tda18271_write_regs(fe, R_CPD, 4);
335
336 /* downconvert internal calibration */
337 N += 1000000;
338
339 tda18271_calc_main_pll(fe, N);
340 tda18271_write_regs(fe, R_MPD, 4);
341
342 msleep(5);
343
344 tda18271_write_regs(fe, R_EP2, 1);
345 tda18271_write_regs(fe, R_EP1, 1);
346 tda18271_write_regs(fe, R_EP2, 1);
347 tda18271_write_regs(fe, R_EP1, 1);
348
349 /* --------------------------------------------------------------- */
350
351 /* normal operation for the main pll */
352 tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
353
354 /* normal operation for the cal pll */
355 tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
356
357 msleep(10); /* plls locking */
358
359 /* launch the rf tracking filters calibration */
360 regs[R_EB20] |= 0x20;
361 tda18271_write_regs(fe, R_EB20, 1);
362
363 msleep(60); /* calibration */
364
365 /* --------------------------------------------------------------- */
366
367 /* set CAL mode to normal */
368 regs[R_EP4] &= ~0x03;
369
370 /* switch on agc1 */
371 regs[R_EP3] &= ~0x40; /* sm_lt = 0 */
372
373 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
374 tda18271_write_regs(fe, R_EB18, 1);
375
376 tda18271_write_regs(fe, R_EP3, 2);
377
378 /* synchronization */
379 tda18271_write_regs(fe, R_EP1, 1);
380
381 /* get calibration result */
382 tda18271_read_extended(fe);
383
384 return regs[R_EB14];
385}
386
387static int tda18271_powerscan(struct dvb_frontend *fe,
388 u32 *freq_in, u32 *freq_out)
389{
390 struct tda18271_priv *priv = fe->tuner_priv;
391 unsigned char *regs = priv->tda18271_regs;
392 int sgn, bcal, count, wait;
393 u8 cid_target;
394 u16 count_limit;
395 u32 freq;
396
397 freq = *freq_in;
398
399 tda18271_calc_rf_band(fe, &freq);
400 tda18271_calc_rf_cal(fe, &freq);
401 tda18271_calc_gain_taper(fe, &freq);
402 tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
403
404 tda18271_write_regs(fe, R_EP2, 1);
405 tda18271_write_regs(fe, R_EB14, 1);
406
407 /* downconvert frequency */
408 freq += 1000000;
409
410 tda18271_calc_main_pll(fe, freq);
411 tda18271_write_regs(fe, R_MPD, 4);
412
413 msleep(5); /* pll locking */
414
415 /* detection mode */
416 regs[R_EP4] &= ~0x03;
417 regs[R_EP4] |= 0x01;
418 tda18271_write_regs(fe, R_EP4, 1);
419
420 /* launch power detection measurement */
421 tda18271_write_regs(fe, R_EP2, 1);
422
423 /* read power detection info, stored in EB10 */
424 tda18271_read_extended(fe);
425
426 /* algorithm initialization */
427 sgn = 1;
428 *freq_out = *freq_in;
429 bcal = 0;
430 count = 0;
431 wait = false;
432
433 while ((regs[R_EB10] & 0x3f) < cid_target) {
434 /* downconvert updated freq to 1 MHz */
435 freq = *freq_in + (sgn * count) + 1000000;
436
437 tda18271_calc_main_pll(fe, freq);
438 tda18271_write_regs(fe, R_MPD, 4);
439
440 if (wait) {
441 msleep(5); /* pll locking */
442 wait = false;
443 } else
444 udelay(100); /* pll locking */
445
446 /* launch power detection measurement */
447 tda18271_write_regs(fe, R_EP2, 1);
448
449 /* read power detection info, stored in EB10 */
450 tda18271_read_extended(fe);
451
452 count += 200;
453
454 if (count <= count_limit)
455 continue;
456
457 if (sgn <= 0)
458 break;
459
460 sgn = -1 * sgn;
461 count = 200;
462 wait = true;
463 }
464
465 if ((regs[R_EB10] & 0x3f) >= cid_target) {
466 bcal = 1;
467 *freq_out = freq - 1000000;
468 } else
469 bcal = 0;
470
471 tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
472 bcal, *freq_in, *freq_out, freq);
473
474 return bcal;
475}
476
477static int tda18271_powerscan_init(struct dvb_frontend *fe)
478{
479 struct tda18271_priv *priv = fe->tuner_priv;
480 unsigned char *regs = priv->tda18271_regs;
481
482 /* set standard to digital */
483 regs[R_EP3] &= ~0x1f; /* clear std bits */
484 regs[R_EP3] |= 0x12;
485
486 /* set cal mode to normal */
487 regs[R_EP4] &= ~0x03;
488
489 /* update IF output level & IF notch frequency */
490 regs[R_EP4] &= ~0x1c; /* clear if level bits */
491
492 tda18271_write_regs(fe, R_EP3, 2);
493
494 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
495 tda18271_write_regs(fe, R_EB18, 1);
496
497 regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
498
499 /* 1.5 MHz low pass filter */
500 regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
501 regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
502
503 tda18271_write_regs(fe, R_EB21, 3);
504
505 return 0;
506}
507
508static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
509{
510 struct tda18271_priv *priv = fe->tuner_priv;
511 struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
512 unsigned char *regs = priv->tda18271_regs;
513 int bcal, rf, i;
514#define RF1 0
515#define RF2 1
516#define RF3 2
517 u32 rf_default[3];
518 u32 rf_freq[3];
519 u8 prog_cal[3];
520 u8 prog_tab[3];
521
522 i = tda18271_lookup_rf_band(fe, &freq, NULL);
523
524 if (i < 0)
525 return i;
526
527 rf_default[RF1] = 1000 * map[i].rf1_def;
528 rf_default[RF2] = 1000 * map[i].rf2_def;
529 rf_default[RF3] = 1000 * map[i].rf3_def;
530
531 for (rf = RF1; rf <= RF3; rf++) {
532 if (0 == rf_default[rf])
533 return 0;
534 tda_cal("freq = %d, rf = %d\n", freq, rf);
535
536 /* look for optimized calibration frequency */
537 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
538
539 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
540 prog_tab[rf] = regs[R_EB14];
541
542 if (1 == bcal)
543 prog_cal[rf] = tda18271_calibrate_rf(fe, rf_freq[rf]);
544 else
545 prog_cal[rf] = prog_tab[rf];
546
547 switch (rf) {
548 case RF1:
549 map[i].rf_a1 = 0;
550 map[i].rf_b1 = prog_cal[RF1] - prog_tab[RF1];
551 map[i].rf1 = rf_freq[RF1] / 1000;
552 break;
553 case RF2:
554 map[i].rf_a1 = (prog_cal[RF2] - prog_tab[RF2] -
555 prog_cal[RF1] + prog_tab[RF1]) /
556 ((rf_freq[RF2] - rf_freq[RF1]) / 1000);
557 map[i].rf2 = rf_freq[RF2] / 1000;
558 break;
559 case RF3:
560 map[i].rf_a2 = (prog_cal[RF3] - prog_tab[RF3] -
561 prog_cal[RF2] + prog_tab[RF2]) /
562 ((rf_freq[RF3] - rf_freq[RF2]) / 1000);
563 map[i].rf_b2 = prog_cal[RF2] - prog_tab[RF2];
564 map[i].rf3 = rf_freq[RF3] / 1000;
565 break;
566 default:
567 BUG();
568 }
569 }
570
571 return 0;
572}
573
574static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
575{
576 struct tda18271_priv *priv = fe->tuner_priv;
577 unsigned int i;
578
579 tda_info("tda18271: performing RF tracking filter calibration\n");
580
581 /* wait for die temperature stabilization */
582 msleep(200);
583
584 tda18271_powerscan_init(fe);
585
586 /* rf band calibration */
587 for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++)
588 tda18271_rf_tracking_filters_init(fe, 1000 *
589 priv->rf_cal_state[i].rfmax);
590
591 priv->tm_rfcal = tda18271_read_thermometer(fe);
592
593 return 0;
594}
595
596/* ------------------------------------------------------------------ */
597
598static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
599{
600 struct tda18271_priv *priv = fe->tuner_priv;
601 unsigned char *regs = priv->tda18271_regs;
602
603 /* test RF_CAL_OK to see if we need init */
604 if ((regs[R_EP1] & 0x10) == 0)
605 priv->cal_initialized = false;
606
607 if (priv->cal_initialized)
608 return 0;
609
610 tda18271_calc_rf_filter_curve(fe);
611
612 tda18271_por(fe);
613
614 tda_info("tda18271: RF tracking filter calibration complete\n");
615
616 priv->cal_initialized = true;
617
618 return 0;
619}
620
621static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
622 u32 freq, u32 bw)
623{
624 struct tda18271_priv *priv = fe->tuner_priv;
625 unsigned char *regs = priv->tda18271_regs;
626 u32 N = 0;
627
628 /* calculate bp filter */
629 tda18271_calc_bp_filter(fe, &freq);
630 tda18271_write_regs(fe, R_EP1, 1);
631
632 regs[R_EB4] &= 0x07;
633 regs[R_EB4] |= 0x60;
634 tda18271_write_regs(fe, R_EB4, 1);
635
636 regs[R_EB7] = 0x60;
637 tda18271_write_regs(fe, R_EB7, 1);
638
639 regs[R_EB14] = 0x00;
640 tda18271_write_regs(fe, R_EB14, 1);
641
642 regs[R_EB20] = 0xcc;
643 tda18271_write_regs(fe, R_EB20, 1);
644
645 /* set cal mode to RF tracking filter calibration */
646 regs[R_EP4] |= 0x03;
647
648 /* calculate cal pll */
649
650 switch (priv->mode) {
651 case TDA18271_ANALOG:
652 N = freq - 1250000;
653 break;
654 case TDA18271_DIGITAL:
655 N = freq + bw / 2;
656 break;
657 }
658
659 tda18271_calc_cal_pll(fe, N);
660
661 /* calculate main pll */
662
663 switch (priv->mode) {
664 case TDA18271_ANALOG:
665 N = freq - 250000;
666 break;
667 case TDA18271_DIGITAL:
668 N = freq + bw / 2 + 1000000;
669 break;
670 }
671
672 tda18271_calc_main_pll(fe, N);
673
674 tda18271_write_regs(fe, R_EP3, 11);
675 msleep(5); /* RF tracking filter calibration initialization */
676
677 /* search for K,M,CO for RF calibration */
678 tda18271_calc_km(fe, &freq);
679 tda18271_write_regs(fe, R_EB13, 1);
680
681 /* search for rf band */
682 tda18271_calc_rf_band(fe, &freq);
683
684 /* search for gain taper */
685 tda18271_calc_gain_taper(fe, &freq);
686
687 tda18271_write_regs(fe, R_EP2, 1);
688 tda18271_write_regs(fe, R_EP1, 1);
689 tda18271_write_regs(fe, R_EP2, 1);
690 tda18271_write_regs(fe, R_EP1, 1);
691
692 regs[R_EB4] &= 0x07;
693 regs[R_EB4] |= 0x40;
694 tda18271_write_regs(fe, R_EB4, 1);
695
696 regs[R_EB7] = 0x40;
697 tda18271_write_regs(fe, R_EB7, 1);
698 msleep(10); /* pll locking */
699
700 regs[R_EB20] = 0xec;
701 tda18271_write_regs(fe, R_EB20, 1);
702 msleep(60); /* RF tracking filter calibration completion */
703
704 regs[R_EP4] &= ~0x03; /* set cal mode to normal */
705 tda18271_write_regs(fe, R_EP4, 1);
706
707 tda18271_write_regs(fe, R_EP1, 1);
708
709 /* RF tracking filter correction for VHF_Low band */
710 if (0 == tda18271_calc_rf_cal(fe, &freq))
711 tda18271_write_regs(fe, R_EB14, 1);
712
713 return 0;
714}
715
716/* ------------------------------------------------------------------ */
717
718static int tda18271_ir_cal_init(struct dvb_frontend *fe)
719{
720 struct tda18271_priv *priv = fe->tuner_priv;
721 unsigned char *regs = priv->tda18271_regs;
722
723 tda18271_read_regs(fe);
724
725 /* test IR_CAL_OK to see if we need init */
726 if ((regs[R_EP1] & 0x08) == 0)
727 tda18271_init_regs(fe);
728
729 return 0;
730}
731
732static int tda18271_init(struct dvb_frontend *fe)
733{
734 struct tda18271_priv *priv = fe->tuner_priv;
735
736 mutex_lock(&priv->lock);
737
738 /* power up */
739 tda18271_set_standby_mode(fe, 0, 0, 0);
740
741 /* initialization */
742 tda18271_ir_cal_init(fe);
743
744 if (priv->id == TDA18271HDC2)
745 tda18271c2_rf_cal_init(fe);
746
747 mutex_unlock(&priv->lock);
748
749 return 0;
750}
751
752static int tda18271_tune(struct dvb_frontend *fe,
753 struct tda18271_std_map_item *map, u32 freq, u32 bw)
754{
755 struct tda18271_priv *priv = fe->tuner_priv;
756
757 tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
758 freq, map->if_freq, bw, map->agc_mode, map->std);
759
760 tda18271_init(fe);
761
762 mutex_lock(&priv->lock);
763
764 switch (priv->id) {
765 case TDA18271HDC1:
766 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
767 break;
768 case TDA18271HDC2:
769 tda18271c2_rf_tracking_filters_correction(fe, freq);
770 break;
771 }
772 tda18271_channel_configuration(fe, map, freq, bw);
773
774 mutex_unlock(&priv->lock);
775
776 return 0;
777}
778
779/* ------------------------------------------------------------------ */
780
781static int tda18271_set_params(struct dvb_frontend *fe,
782 struct dvb_frontend_parameters *params)
783{
784 struct tda18271_priv *priv = fe->tuner_priv;
785 struct tda18271_std_map *std_map = &priv->std;
786 struct tda18271_std_map_item *map;
787 int ret;
788 u32 bw, freq = params->frequency;
789
790 priv->mode = TDA18271_DIGITAL;
791
792 if (fe->ops.info.type == FE_ATSC) {
793 switch (params->u.vsb.modulation) {
794 case VSB_8:
795 case VSB_16:
796 map = &std_map->atsc_6;
797 break;
798 case QAM_64:
799 case QAM_256:
800 map = &std_map->qam_6;
801 break;
802 default:
803 tda_warn("modulation not set!\n");
804 return -EINVAL;
805 }
806#if 0
807 /* userspace request is already center adjusted */
808 freq += 1750000; /* Adjust to center (+1.75MHZ) */
809#endif
810 bw = 6000000;
811 } else if (fe->ops.info.type == FE_OFDM) {
812 switch (params->u.ofdm.bandwidth) {
813 case BANDWIDTH_6_MHZ:
814 bw = 6000000;
815 map = &std_map->dvbt_6;
816 break;
817 case BANDWIDTH_7_MHZ:
818 bw = 7000000;
819 map = &std_map->dvbt_7;
820 break;
821 case BANDWIDTH_8_MHZ:
822 bw = 8000000;
823 map = &std_map->dvbt_8;
824 break;
825 default:
826 tda_warn("bandwidth not set!\n");
827 return -EINVAL;
828 }
829 } else {
830 tda_warn("modulation type not supported!\n");
831 return -EINVAL;
832 }
833
834 /* When tuning digital, the analog demod must be tri-stated */
835 if (fe->ops.analog_ops.standby)
836 fe->ops.analog_ops.standby(fe);
837
838 ret = tda18271_tune(fe, map, freq, bw);
839
840 if (ret < 0)
841 goto fail;
842
843 priv->frequency = freq;
844 priv->bandwidth = (fe->ops.info.type == FE_OFDM) ?
845 params->u.ofdm.bandwidth : 0;
846fail:
847 return ret;
848}
849
850static int tda18271_set_analog_params(struct dvb_frontend *fe,
851 struct analog_parameters *params)
852{
853 struct tda18271_priv *priv = fe->tuner_priv;
854 struct tda18271_std_map *std_map = &priv->std;
855 struct tda18271_std_map_item *map;
856 char *mode;
857 int ret;
858 u32 freq = params->frequency * 62500;
859
860 priv->mode = TDA18271_ANALOG;
861
862 if (params->mode == V4L2_TUNER_RADIO) {
863 freq = freq / 1000;
864 map = &std_map->fm_radio;
865 mode = "fm";
866 } else if (params->std & V4L2_STD_MN) {
867 map = &std_map->atv_mn;
868 mode = "MN";
869 } else if (params->std & V4L2_STD_B) {
870 map = &std_map->atv_b;
871 mode = "B";
872 } else if (params->std & V4L2_STD_GH) {
873 map = &std_map->atv_gh;
874 mode = "GH";
875 } else if (params->std & V4L2_STD_PAL_I) {
876 map = &std_map->atv_i;
877 mode = "I";
878 } else if (params->std & V4L2_STD_DK) {
879 map = &std_map->atv_dk;
880 mode = "DK";
881 } else if (params->std & V4L2_STD_SECAM_L) {
882 map = &std_map->atv_l;
883 mode = "L";
884 } else if (params->std & V4L2_STD_SECAM_LC) {
885 map = &std_map->atv_lc;
886 mode = "L'";
887 } else {
888 map = &std_map->atv_i;
889 mode = "xx";
890 }
891
892 tda_dbg("setting tda18271 to system %s\n", mode);
893
894 ret = tda18271_tune(fe, map, freq, 0);
895
896 if (ret < 0)
897 goto fail;
898
899 priv->frequency = freq;
900 priv->bandwidth = 0;
901fail:
902 return ret;
903}
904
905static int tda18271_sleep(struct dvb_frontend *fe)
906{
907 struct tda18271_priv *priv = fe->tuner_priv;
908
909 mutex_lock(&priv->lock);
910
911 /* standby mode w/ slave tuner output
912 * & loop thru & xtal oscillator on */
913 tda18271_set_standby_mode(fe, 1, 0, 0);
914
915 mutex_unlock(&priv->lock);
916
917 return 0;
918}
919
920static int tda18271_release(struct dvb_frontend *fe)
921{
922 struct tda18271_priv *priv = fe->tuner_priv;
923
924 mutex_lock(&tda18271_list_mutex);
925
926 if (priv)
927 hybrid_tuner_release_state(priv);
928
929 mutex_unlock(&tda18271_list_mutex);
930
931 fe->tuner_priv = NULL;
932
933 return 0;
934}
935
936static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
937{
938 struct tda18271_priv *priv = fe->tuner_priv;
939 *frequency = priv->frequency;
940 return 0;
941}
942
943static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
944{
945 struct tda18271_priv *priv = fe->tuner_priv;
946 *bandwidth = priv->bandwidth;
947 return 0;
948}
949
950/* ------------------------------------------------------------------ */
951
952#define tda18271_update_std(std_cfg, name) do { \
953 if (map->std_cfg.if_freq + \
954 map->std_cfg.agc_mode + map->std_cfg.std + \
955 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) { \
956 tda_dbg("Using custom std config for %s\n", name); \
957 memcpy(&std->std_cfg, &map->std_cfg, \
958 sizeof(struct tda18271_std_map_item)); \
959 } } while (0)
960
961#define tda18271_dump_std_item(std_cfg, name) do { \
962 tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, " \
963 "if_lvl = %d, rfagc_top = 0x%02x\n", \
964 name, std->std_cfg.if_freq, \
965 std->std_cfg.agc_mode, std->std_cfg.std, \
966 std->std_cfg.if_lvl, std->std_cfg.rfagc_top); \
967 } while (0)
968
969static int tda18271_dump_std_map(struct dvb_frontend *fe)
970{
971 struct tda18271_priv *priv = fe->tuner_priv;
972 struct tda18271_std_map *std = &priv->std;
973
974 tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
975 tda18271_dump_std_item(fm_radio, " fm ");
976 tda18271_dump_std_item(atv_b, "atv b ");
977 tda18271_dump_std_item(atv_dk, "atv dk");
978 tda18271_dump_std_item(atv_gh, "atv gh");
979 tda18271_dump_std_item(atv_i, "atv i ");
980 tda18271_dump_std_item(atv_l, "atv l ");
981 tda18271_dump_std_item(atv_lc, "atv l'");
982 tda18271_dump_std_item(atv_mn, "atv mn");
983 tda18271_dump_std_item(atsc_6, "atsc 6");
984 tda18271_dump_std_item(dvbt_6, "dvbt 6");
985 tda18271_dump_std_item(dvbt_7, "dvbt 7");
986 tda18271_dump_std_item(dvbt_8, "dvbt 8");
987 tda18271_dump_std_item(qam_6, "qam 6 ");
988 tda18271_dump_std_item(qam_8, "qam 8 ");
989
990 return 0;
991}
992
993static int tda18271_update_std_map(struct dvb_frontend *fe,
994 struct tda18271_std_map *map)
995{
996 struct tda18271_priv *priv = fe->tuner_priv;
997 struct tda18271_std_map *std = &priv->std;
998
999 if (!map)
1000 return -EINVAL;
1001
1002 tda18271_update_std(fm_radio, "fm");
1003 tda18271_update_std(atv_b, "atv b");
1004 tda18271_update_std(atv_dk, "atv dk");
1005 tda18271_update_std(atv_gh, "atv gh");
1006 tda18271_update_std(atv_i, "atv i");
1007 tda18271_update_std(atv_l, "atv l");
1008 tda18271_update_std(atv_lc, "atv l'");
1009 tda18271_update_std(atv_mn, "atv mn");
1010 tda18271_update_std(atsc_6, "atsc 6");
1011 tda18271_update_std(dvbt_6, "dvbt 6");
1012 tda18271_update_std(dvbt_7, "dvbt 7");
1013 tda18271_update_std(dvbt_8, "dvbt 8");
1014 tda18271_update_std(qam_6, "qam 6");
1015 tda18271_update_std(qam_8, "qam 8");
1016
1017 return 0;
1018}
1019
1020static int tda18271_get_id(struct dvb_frontend *fe)
1021{
1022 struct tda18271_priv *priv = fe->tuner_priv;
1023 unsigned char *regs = priv->tda18271_regs;
1024 char *name;
1025 int ret = 0;
1026
1027 mutex_lock(&priv->lock);
1028 tda18271_read_regs(fe);
1029 mutex_unlock(&priv->lock);
1030
1031 switch (regs[R_ID] & 0x7f) {
1032 case 3:
1033 name = "TDA18271HD/C1";
1034 priv->id = TDA18271HDC1;
1035 break;
1036 case 4:
1037 name = "TDA18271HD/C2";
1038 priv->id = TDA18271HDC2;
1039 break;
1040 default:
1041 name = "Unknown device";
1042 ret = -EINVAL;
1043 break;
1044 }
1045
1046 tda_info("%s detected @ %d-%04x%s\n", name,
1047 i2c_adapter_id(priv->i2c_props.adap),
1048 priv->i2c_props.addr,
1049 (0 == ret) ? "" : ", device not supported.");
1050
1051 return ret;
1052}
1053
1054static struct dvb_tuner_ops tda18271_tuner_ops = {
1055 .info = {
1056 .name = "NXP TDA18271HD",
1057 .frequency_min = 45000000,
1058 .frequency_max = 864000000,
1059 .frequency_step = 62500
1060 },
1061 .init = tda18271_init,
1062 .sleep = tda18271_sleep,
1063 .set_params = tda18271_set_params,
1064 .set_analog_params = tda18271_set_analog_params,
1065 .release = tda18271_release,
1066 .get_frequency = tda18271_get_frequency,
1067 .get_bandwidth = tda18271_get_bandwidth,
1068};
1069
1070struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1071 struct i2c_adapter *i2c,
1072 struct tda18271_config *cfg)
1073{
1074 struct tda18271_priv *priv = NULL;
1075 int instance;
1076
1077 mutex_lock(&tda18271_list_mutex);
1078
1079 instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1080 hybrid_tuner_instance_list,
1081 i2c, addr, "tda18271");
1082 switch (instance) {
1083 case 0:
1084 goto fail;
1085 break;
1086 case 1:
1087 /* new tuner instance */
1088 priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1089 priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1090 priv->cal_initialized = false;
1091 mutex_init(&priv->lock);
1092
1093 fe->tuner_priv = priv;
1094
1095 if (cfg)
1096 priv->small_i2c = cfg->small_i2c;
1097
1098 if (tda18271_get_id(fe) < 0)
1099 goto fail;
1100
1101 if (tda18271_assign_map_layout(fe) < 0)
1102 goto fail;
1103
1104 mutex_lock(&priv->lock);
1105 tda18271_init_regs(fe);
1106
1107 if ((tda18271_cal_on_startup) && (priv->id == TDA18271HDC2))
1108 tda18271c2_rf_cal_init(fe);
1109
1110 mutex_unlock(&priv->lock);
1111 break;
1112 default:
1113 /* existing tuner instance */
1114 fe->tuner_priv = priv;
1115
1116 /* allow dvb driver to override i2c gate setting */
1117 if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG))
1118 priv->gate = cfg->gate;
1119 break;
1120 }
1121
1122 /* override default std map with values in config struct */
1123 if ((cfg) && (cfg->std_map))
1124 tda18271_update_std_map(fe, cfg->std_map);
1125
1126 mutex_unlock(&tda18271_list_mutex);
1127
1128 memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1129 sizeof(struct dvb_tuner_ops));
1130
1131 if (tda18271_debug & (DBG_MAP | DBG_ADV))
1132 tda18271_dump_std_map(fe);
1133
1134 return fe;
1135fail:
1136 mutex_unlock(&tda18271_list_mutex);
1137
1138 tda18271_release(fe);
1139 return NULL;
1140}
1141EXPORT_SYMBOL_GPL(tda18271_attach);
1142MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1143MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1144MODULE_LICENSE("GPL");
1145MODULE_VERSION("0.3");
1146
1147/*
1148 * Overrides for Emacs so that we follow Linus's tabbing style.
1149 * ---------------------------------------------------------------------------
1150 * Local variables:
1151 * c-basic-offset: 8
1152 * End:
1153 */
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-03 19:24:54 -0500