V4L/DVB (7656): tda826x: Calculate cut off fequency from symbol rate
[linux-2.6] / drivers / media / dvb / frontends / tda18271-fe.c
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
25 int tda18271_debug;
26 module_param_named(debug, tda18271_debug, int, 0644);
27 MODULE_PARM_DESC(debug, "set debug level "
28                  "(info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
29
30 static int tda18271_cal_on_startup;
31 module_param_named(cal, tda18271_cal_on_startup, int, 0644);
32 MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
33
34 static DEFINE_MUTEX(tda18271_list_mutex);
35 static LIST_HEAD(hybrid_tuner_instance_list);
36
37 /*---------------------------------------------------------------------*/
38
39 static 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
48 static 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
166 static 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
210 static 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
258 static 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
284 static 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
387 static 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
477 static 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
508 static 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
574 static 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
598 static 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
621 static 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
718 static 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
732 static 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
752 static 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
781 static 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;
846 fail:
847         return ret;
848 }
849
850 static 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;
901 fail:
902         return ret;
903 }
904
905 static 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
920 static 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
936 static 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
943 static 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
969 static 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
993 static 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
1020 static 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
1054 static 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
1070 struct 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;
1135 fail:
1136         mutex_unlock(&tda18271_list_mutex);
1137
1138         tda18271_release(fe);
1139         return NULL;
1140 }
1141 EXPORT_SYMBOL_GPL(tda18271_attach);
1142 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1143 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1144 MODULE_LICENSE("GPL");
1145 MODULE_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  */