Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
[linux-2.6] / drivers / media / common / tuners / 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 inline void tda18271_set_if_notch(struct dvb_frontend *fe)
49 {
50         struct tda18271_priv *priv = fe->tuner_priv;
51         unsigned char *regs = priv->tda18271_regs;
52
53         switch (priv->mode) {
54         case TDA18271_ANALOG:
55                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
56                 break;
57         case TDA18271_DIGITAL:
58                 regs[R_MPD]  |= 0x80; /* IF notch = 1 */
59                 break;
60         }
61 }
62
63 static int tda18271_channel_configuration(struct dvb_frontend *fe,
64                                           struct tda18271_std_map_item *map,
65                                           u32 freq, u32 bw)
66 {
67         struct tda18271_priv *priv = fe->tuner_priv;
68         unsigned char *regs = priv->tda18271_regs;
69         int ret;
70         u32 N;
71
72         /* update TV broadcast parameters */
73
74         /* set standard */
75         regs[R_EP3]  &= ~0x1f; /* clear std bits */
76         regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
77
78         if (priv->id == TDA18271HDC2) {
79                 /* set rfagc to high speed mode */
80                 regs[R_EP3] &= ~0x04;
81         }
82
83         /* set cal mode to normal */
84         regs[R_EP4]  &= ~0x03;
85
86         /* update IF output level */
87         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
88         regs[R_EP4]  |= (map->if_lvl << 2);
89
90         /* update FM_RFn */
91         regs[R_EP4]  &= ~0x80;
92         regs[R_EP4]  |= map->fm_rfn << 7;
93
94         /* update rf top / if top */
95         regs[R_EB22]  = 0x00;
96         regs[R_EB22] |= map->rfagc_top;
97         ret = tda18271_write_regs(fe, R_EB22, 1);
98         if (tda_fail(ret))
99                 goto fail;
100
101         /* --------------------------------------------------------------- */
102
103         /* disable Power Level Indicator */
104         regs[R_EP1]  |= 0x40;
105
106         /* make sure thermometer is off */
107         regs[R_TM]   &= ~0x10;
108
109         /* frequency dependent parameters */
110
111         tda18271_calc_ir_measure(fe, &freq);
112
113         tda18271_calc_bp_filter(fe, &freq);
114
115         tda18271_calc_rf_band(fe, &freq);
116
117         tda18271_calc_gain_taper(fe, &freq);
118
119         /* --------------------------------------------------------------- */
120
121         /* dual tuner and agc1 extra configuration */
122
123         switch (priv->role) {
124         case TDA18271_MASTER:
125                 regs[R_EB1]  |= 0x04; /* main vco */
126                 break;
127         case TDA18271_SLAVE:
128                 regs[R_EB1]  &= ~0x04; /* cal vco */
129                 break;
130         }
131
132         /* agc1 always active */
133         regs[R_EB1]  &= ~0x02;
134
135         /* agc1 has priority on agc2 */
136         regs[R_EB1]  &= ~0x01;
137
138         ret = tda18271_write_regs(fe, R_EB1, 1);
139         if (tda_fail(ret))
140                 goto fail;
141
142         /* --------------------------------------------------------------- */
143
144         N = map->if_freq * 1000 + freq;
145
146         switch (priv->role) {
147         case TDA18271_MASTER:
148                 tda18271_calc_main_pll(fe, N);
149                 tda18271_set_if_notch(fe);
150                 tda18271_write_regs(fe, R_MPD, 4);
151                 break;
152         case TDA18271_SLAVE:
153                 tda18271_calc_cal_pll(fe, N);
154                 tda18271_write_regs(fe, R_CPD, 4);
155
156                 regs[R_MPD] = regs[R_CPD] & 0x7f;
157                 tda18271_set_if_notch(fe);
158                 tda18271_write_regs(fe, R_MPD, 1);
159                 break;
160         }
161
162         ret = tda18271_write_regs(fe, R_TM, 7);
163         if (tda_fail(ret))
164                 goto fail;
165
166         /* force charge pump source */
167         charge_pump_source(fe, 1);
168
169         msleep(1);
170
171         /* return pll to normal operation */
172         charge_pump_source(fe, 0);
173
174         msleep(20);
175
176         if (priv->id == TDA18271HDC2) {
177                 /* set rfagc to normal speed mode */
178                 if (map->fm_rfn)
179                         regs[R_EP3] &= ~0x04;
180                 else
181                         regs[R_EP3] |= 0x04;
182                 ret = tda18271_write_regs(fe, R_EP3, 1);
183         }
184 fail:
185         return ret;
186 }
187
188 static int tda18271_read_thermometer(struct dvb_frontend *fe)
189 {
190         struct tda18271_priv *priv = fe->tuner_priv;
191         unsigned char *regs = priv->tda18271_regs;
192         int tm;
193
194         /* switch thermometer on */
195         regs[R_TM]   |= 0x10;
196         tda18271_write_regs(fe, R_TM, 1);
197
198         /* read thermometer info */
199         tda18271_read_regs(fe);
200
201         if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
202             (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
203
204                 if ((regs[R_TM] & 0x20) == 0x20)
205                         regs[R_TM] &= ~0x20;
206                 else
207                         regs[R_TM] |= 0x20;
208
209                 tda18271_write_regs(fe, R_TM, 1);
210
211                 msleep(10); /* temperature sensing */
212
213                 /* read thermometer info */
214                 tda18271_read_regs(fe);
215         }
216
217         tm = tda18271_lookup_thermometer(fe);
218
219         /* switch thermometer off */
220         regs[R_TM]   &= ~0x10;
221         tda18271_write_regs(fe, R_TM, 1);
222
223         /* set CAL mode to normal */
224         regs[R_EP4]  &= ~0x03;
225         tda18271_write_regs(fe, R_EP4, 1);
226
227         return tm;
228 }
229
230 /* ------------------------------------------------------------------ */
231
232 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
233                                                      u32 freq)
234 {
235         struct tda18271_priv *priv = fe->tuner_priv;
236         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
237         unsigned char *regs = priv->tda18271_regs;
238         int tm_current, rfcal_comp, approx, i, ret;
239         u8 dc_over_dt, rf_tab;
240
241         /* power up */
242         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
243         if (tda_fail(ret))
244                 goto fail;
245
246         /* read die current temperature */
247         tm_current = tda18271_read_thermometer(fe);
248
249         /* frequency dependent parameters */
250
251         tda18271_calc_rf_cal(fe, &freq);
252         rf_tab = regs[R_EB14];
253
254         i = tda18271_lookup_rf_band(fe, &freq, NULL);
255         if (tda_fail(i))
256                 return i;
257
258         if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
259                 approx = map[i].rf_a1 *
260                         (freq / 1000 - map[i].rf1) + map[i].rf_b1 + rf_tab;
261         } else {
262                 approx = map[i].rf_a2 *
263                         (freq / 1000 - map[i].rf2) + map[i].rf_b2 + rf_tab;
264         }
265
266         if (approx < 0)
267                 approx = 0;
268         if (approx > 255)
269                 approx = 255;
270
271         tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
272
273         /* calculate temperature compensation */
274         rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal);
275
276         regs[R_EB14] = approx + rfcal_comp;
277         ret = tda18271_write_regs(fe, R_EB14, 1);
278 fail:
279         return ret;
280 }
281
282 static int tda18271_por(struct dvb_frontend *fe)
283 {
284         struct tda18271_priv *priv = fe->tuner_priv;
285         unsigned char *regs = priv->tda18271_regs;
286         int ret;
287
288         /* power up detector 1 */
289         regs[R_EB12] &= ~0x20;
290         ret = tda18271_write_regs(fe, R_EB12, 1);
291         if (tda_fail(ret))
292                 goto fail;
293
294         regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
295         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
296         ret = tda18271_write_regs(fe, R_EB18, 1);
297         if (tda_fail(ret))
298                 goto fail;
299
300         regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
301
302         /* POR mode */
303         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
304         if (tda_fail(ret))
305                 goto fail;
306
307         /* disable 1.5 MHz low pass filter */
308         regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
309         regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
310         ret = tda18271_write_regs(fe, R_EB21, 3);
311 fail:
312         return ret;
313 }
314
315 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
316 {
317         struct tda18271_priv *priv = fe->tuner_priv;
318         unsigned char *regs = priv->tda18271_regs;
319         u32 N;
320
321         /* set CAL mode to normal */
322         regs[R_EP4]  &= ~0x03;
323         tda18271_write_regs(fe, R_EP4, 1);
324
325         /* switch off agc1 */
326         regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
327
328         regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
329         tda18271_write_regs(fe, R_EB18, 1);
330
331         /* frequency dependent parameters */
332
333         tda18271_calc_bp_filter(fe, &freq);
334         tda18271_calc_gain_taper(fe, &freq);
335         tda18271_calc_rf_band(fe, &freq);
336         tda18271_calc_km(fe, &freq);
337
338         tda18271_write_regs(fe, R_EP1, 3);
339         tda18271_write_regs(fe, R_EB13, 1);
340
341         /* main pll charge pump source */
342         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
343
344         /* cal pll charge pump source */
345         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
346
347         /* force dcdc converter to 0 V */
348         regs[R_EB14] = 0x00;
349         tda18271_write_regs(fe, R_EB14, 1);
350
351         /* disable plls lock */
352         regs[R_EB20] &= ~0x20;
353         tda18271_write_regs(fe, R_EB20, 1);
354
355         /* set CAL mode to RF tracking filter calibration */
356         regs[R_EP4]  |= 0x03;
357         tda18271_write_regs(fe, R_EP4, 2);
358
359         /* --------------------------------------------------------------- */
360
361         /* set the internal calibration signal */
362         N = freq;
363
364         tda18271_calc_cal_pll(fe, N);
365         tda18271_write_regs(fe, R_CPD, 4);
366
367         /* downconvert internal calibration */
368         N += 1000000;
369
370         tda18271_calc_main_pll(fe, N);
371         tda18271_write_regs(fe, R_MPD, 4);
372
373         msleep(5);
374
375         tda18271_write_regs(fe, R_EP2, 1);
376         tda18271_write_regs(fe, R_EP1, 1);
377         tda18271_write_regs(fe, R_EP2, 1);
378         tda18271_write_regs(fe, R_EP1, 1);
379
380         /* --------------------------------------------------------------- */
381
382         /* normal operation for the main pll */
383         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
384
385         /* normal operation for the cal pll  */
386         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
387
388         msleep(10); /* plls locking */
389
390         /* launch the rf tracking filters calibration */
391         regs[R_EB20]  |= 0x20;
392         tda18271_write_regs(fe, R_EB20, 1);
393
394         msleep(60); /* calibration */
395
396         /* --------------------------------------------------------------- */
397
398         /* set CAL mode to normal */
399         regs[R_EP4]  &= ~0x03;
400
401         /* switch on agc1 */
402         regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
403
404         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
405         tda18271_write_regs(fe, R_EB18, 1);
406
407         tda18271_write_regs(fe, R_EP3, 2);
408
409         /* synchronization */
410         tda18271_write_regs(fe, R_EP1, 1);
411
412         /* get calibration result */
413         tda18271_read_extended(fe);
414
415         return regs[R_EB14];
416 }
417
418 static int tda18271_powerscan(struct dvb_frontend *fe,
419                               u32 *freq_in, u32 *freq_out)
420 {
421         struct tda18271_priv *priv = fe->tuner_priv;
422         unsigned char *regs = priv->tda18271_regs;
423         int sgn, bcal, count, wait, ret;
424         u8 cid_target;
425         u16 count_limit;
426         u32 freq;
427
428         freq = *freq_in;
429
430         tda18271_calc_rf_band(fe, &freq);
431         tda18271_calc_rf_cal(fe, &freq);
432         tda18271_calc_gain_taper(fe, &freq);
433         tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
434
435         tda18271_write_regs(fe, R_EP2, 1);
436         tda18271_write_regs(fe, R_EB14, 1);
437
438         /* downconvert frequency */
439         freq += 1000000;
440
441         tda18271_calc_main_pll(fe, freq);
442         tda18271_write_regs(fe, R_MPD, 4);
443
444         msleep(5); /* pll locking */
445
446         /* detection mode */
447         regs[R_EP4]  &= ~0x03;
448         regs[R_EP4]  |= 0x01;
449         tda18271_write_regs(fe, R_EP4, 1);
450
451         /* launch power detection measurement */
452         tda18271_write_regs(fe, R_EP2, 1);
453
454         /* read power detection info, stored in EB10 */
455         ret = tda18271_read_extended(fe);
456         if (tda_fail(ret))
457                 return ret;
458
459         /* algorithm initialization */
460         sgn = 1;
461         *freq_out = *freq_in;
462         bcal = 0;
463         count = 0;
464         wait = false;
465
466         while ((regs[R_EB10] & 0x3f) < cid_target) {
467                 /* downconvert updated freq to 1 MHz */
468                 freq = *freq_in + (sgn * count) + 1000000;
469
470                 tda18271_calc_main_pll(fe, freq);
471                 tda18271_write_regs(fe, R_MPD, 4);
472
473                 if (wait) {
474                         msleep(5); /* pll locking */
475                         wait = false;
476                 } else
477                         udelay(100); /* pll locking */
478
479                 /* launch power detection measurement */
480                 tda18271_write_regs(fe, R_EP2, 1);
481
482                 /* read power detection info, stored in EB10 */
483                 ret = tda18271_read_extended(fe);
484                 if (tda_fail(ret))
485                         return ret;
486
487                 count += 200;
488
489                 if (count <= count_limit)
490                         continue;
491
492                 if (sgn <= 0)
493                         break;
494
495                 sgn = -1 * sgn;
496                 count = 200;
497                 wait = true;
498         }
499
500         if ((regs[R_EB10] & 0x3f) >= cid_target) {
501                 bcal = 1;
502                 *freq_out = freq - 1000000;
503         } else
504                 bcal = 0;
505
506         tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
507                 bcal, *freq_in, *freq_out, freq);
508
509         return bcal;
510 }
511
512 static int tda18271_powerscan_init(struct dvb_frontend *fe)
513 {
514         struct tda18271_priv *priv = fe->tuner_priv;
515         unsigned char *regs = priv->tda18271_regs;
516         int ret;
517
518         /* set standard to digital */
519         regs[R_EP3]  &= ~0x1f; /* clear std bits */
520         regs[R_EP3]  |= 0x12;
521
522         /* set cal mode to normal */
523         regs[R_EP4]  &= ~0x03;
524
525         /* update IF output level */
526         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
527
528         ret = tda18271_write_regs(fe, R_EP3, 2);
529         if (tda_fail(ret))
530                 goto fail;
531
532         regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
533         ret = tda18271_write_regs(fe, R_EB18, 1);
534         if (tda_fail(ret))
535                 goto fail;
536
537         regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
538
539         /* 1.5 MHz low pass filter */
540         regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
541         regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
542
543         ret = tda18271_write_regs(fe, R_EB21, 3);
544 fail:
545         return ret;
546 }
547
548 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
549 {
550         struct tda18271_priv *priv = fe->tuner_priv;
551         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
552         unsigned char *regs = priv->tda18271_regs;
553         int bcal, rf, i;
554 #define RF1 0
555 #define RF2 1
556 #define RF3 2
557         u32 rf_default[3];
558         u32 rf_freq[3];
559         u8 prog_cal[3];
560         u8 prog_tab[3];
561
562         i = tda18271_lookup_rf_band(fe, &freq, NULL);
563
564         if (tda_fail(i))
565                 return i;
566
567         rf_default[RF1] = 1000 * map[i].rf1_def;
568         rf_default[RF2] = 1000 * map[i].rf2_def;
569         rf_default[RF3] = 1000 * map[i].rf3_def;
570
571         for (rf = RF1; rf <= RF3; rf++) {
572                 if (0 == rf_default[rf])
573                         return 0;
574                 tda_cal("freq = %d, rf = %d\n", freq, rf);
575
576                 /* look for optimized calibration frequency */
577                 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
578                 if (tda_fail(bcal))
579                         return bcal;
580
581                 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
582                 prog_tab[rf] = regs[R_EB14];
583
584                 if (1 == bcal)
585                         prog_cal[rf] = tda18271_calibrate_rf(fe, rf_freq[rf]);
586                 else
587                         prog_cal[rf] = prog_tab[rf];
588
589                 switch (rf) {
590                 case RF1:
591                         map[i].rf_a1 = 0;
592                         map[i].rf_b1 = prog_cal[RF1] - prog_tab[RF1];
593                         map[i].rf1   = rf_freq[RF1] / 1000;
594                         break;
595                 case RF2:
596                         map[i].rf_a1 = (prog_cal[RF2] - prog_tab[RF2] -
597                                         prog_cal[RF1] + prog_tab[RF1]) /
598                                 ((rf_freq[RF2] - rf_freq[RF1]) / 1000);
599                         map[i].rf2   = rf_freq[RF2] / 1000;
600                         break;
601                 case RF3:
602                         map[i].rf_a2 = (prog_cal[RF3] - prog_tab[RF3] -
603                                         prog_cal[RF2] + prog_tab[RF2]) /
604                                 ((rf_freq[RF3] - rf_freq[RF2]) / 1000);
605                         map[i].rf_b2 = prog_cal[RF2] - prog_tab[RF2];
606                         map[i].rf3   = rf_freq[RF3] / 1000;
607                         break;
608                 default:
609                         BUG();
610                 }
611         }
612
613         return 0;
614 }
615
616 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
617 {
618         struct tda18271_priv *priv = fe->tuner_priv;
619         unsigned int i;
620         int ret;
621
622         tda_info("tda18271: performing RF tracking filter calibration\n");
623
624         /* wait for die temperature stabilization */
625         msleep(200);
626
627         ret = tda18271_powerscan_init(fe);
628         if (tda_fail(ret))
629                 goto fail;
630
631         /* rf band calibration */
632         for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
633                 ret =
634                 tda18271_rf_tracking_filters_init(fe, 1000 *
635                                                   priv->rf_cal_state[i].rfmax);
636                 if (tda_fail(ret))
637                         goto fail;
638         }
639
640         priv->tm_rfcal = tda18271_read_thermometer(fe);
641 fail:
642         return ret;
643 }
644
645 /* ------------------------------------------------------------------ */
646
647 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
648 {
649         struct tda18271_priv *priv = fe->tuner_priv;
650         unsigned char *regs = priv->tda18271_regs;
651         int ret;
652
653         /* test RF_CAL_OK to see if we need init */
654         if ((regs[R_EP1] & 0x10) == 0)
655                 priv->cal_initialized = false;
656
657         if (priv->cal_initialized)
658                 return 0;
659
660         ret = tda18271_calc_rf_filter_curve(fe);
661         if (tda_fail(ret))
662                 goto fail;
663
664         ret = tda18271_por(fe);
665         if (tda_fail(ret))
666                 goto fail;
667
668         tda_info("tda18271: RF tracking filter calibration complete\n");
669
670         priv->cal_initialized = true;
671         goto end;
672 fail:
673         tda_info("tda18271: RF tracking filter calibration failed!\n");
674 end:
675         return ret;
676 }
677
678 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
679                                                      u32 freq, u32 bw)
680 {
681         struct tda18271_priv *priv = fe->tuner_priv;
682         unsigned char *regs = priv->tda18271_regs;
683         int ret;
684         u32 N = 0;
685
686         /* calculate bp filter */
687         tda18271_calc_bp_filter(fe, &freq);
688         tda18271_write_regs(fe, R_EP1, 1);
689
690         regs[R_EB4]  &= 0x07;
691         regs[R_EB4]  |= 0x60;
692         tda18271_write_regs(fe, R_EB4, 1);
693
694         regs[R_EB7]   = 0x60;
695         tda18271_write_regs(fe, R_EB7, 1);
696
697         regs[R_EB14]  = 0x00;
698         tda18271_write_regs(fe, R_EB14, 1);
699
700         regs[R_EB20]  = 0xcc;
701         tda18271_write_regs(fe, R_EB20, 1);
702
703         /* set cal mode to RF tracking filter calibration */
704         regs[R_EP4]  |= 0x03;
705
706         /* calculate cal pll */
707
708         switch (priv->mode) {
709         case TDA18271_ANALOG:
710                 N = freq - 1250000;
711                 break;
712         case TDA18271_DIGITAL:
713                 N = freq + bw / 2;
714                 break;
715         }
716
717         tda18271_calc_cal_pll(fe, N);
718
719         /* calculate main pll */
720
721         switch (priv->mode) {
722         case TDA18271_ANALOG:
723                 N = freq - 250000;
724                 break;
725         case TDA18271_DIGITAL:
726                 N = freq + bw / 2 + 1000000;
727                 break;
728         }
729
730         tda18271_calc_main_pll(fe, N);
731
732         ret = tda18271_write_regs(fe, R_EP3, 11);
733         if (tda_fail(ret))
734                 return ret;
735
736         msleep(5); /* RF tracking filter calibration initialization */
737
738         /* search for K,M,CO for RF calibration */
739         tda18271_calc_km(fe, &freq);
740         tda18271_write_regs(fe, R_EB13, 1);
741
742         /* search for rf band */
743         tda18271_calc_rf_band(fe, &freq);
744
745         /* search for gain taper */
746         tda18271_calc_gain_taper(fe, &freq);
747
748         tda18271_write_regs(fe, R_EP2, 1);
749         tda18271_write_regs(fe, R_EP1, 1);
750         tda18271_write_regs(fe, R_EP2, 1);
751         tda18271_write_regs(fe, R_EP1, 1);
752
753         regs[R_EB4]  &= 0x07;
754         regs[R_EB4]  |= 0x40;
755         tda18271_write_regs(fe, R_EB4, 1);
756
757         regs[R_EB7]   = 0x40;
758         tda18271_write_regs(fe, R_EB7, 1);
759         msleep(10); /* pll locking */
760
761         regs[R_EB20]  = 0xec;
762         tda18271_write_regs(fe, R_EB20, 1);
763         msleep(60); /* RF tracking filter calibration completion */
764
765         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
766         tda18271_write_regs(fe, R_EP4, 1);
767
768         tda18271_write_regs(fe, R_EP1, 1);
769
770         /* RF tracking filter correction for VHF_Low band */
771         if (0 == tda18271_calc_rf_cal(fe, &freq))
772                 tda18271_write_regs(fe, R_EB14, 1);
773
774         return 0;
775 }
776
777 /* ------------------------------------------------------------------ */
778
779 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
780 {
781         struct tda18271_priv *priv = fe->tuner_priv;
782         unsigned char *regs = priv->tda18271_regs;
783         int ret;
784
785         ret = tda18271_read_regs(fe);
786         if (tda_fail(ret))
787                 goto fail;
788
789         /* test IR_CAL_OK to see if we need init */
790         if ((regs[R_EP1] & 0x08) == 0)
791                 ret = tda18271_init_regs(fe);
792 fail:
793         return ret;
794 }
795
796 static int tda18271_init(struct dvb_frontend *fe)
797 {
798         struct tda18271_priv *priv = fe->tuner_priv;
799         int ret;
800
801         mutex_lock(&priv->lock);
802
803         /* power up */
804         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
805         if (tda_fail(ret))
806                 goto fail;
807
808         /* initialization */
809         ret = tda18271_ir_cal_init(fe);
810         if (tda_fail(ret))
811                 goto fail;
812
813         if (priv->id == TDA18271HDC2)
814                 tda18271c2_rf_cal_init(fe);
815 fail:
816         mutex_unlock(&priv->lock);
817
818         return ret;
819 }
820
821 static int tda18271_tune(struct dvb_frontend *fe,
822                          struct tda18271_std_map_item *map, u32 freq, u32 bw)
823 {
824         struct tda18271_priv *priv = fe->tuner_priv;
825         int ret;
826
827         tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
828                 freq, map->if_freq, bw, map->agc_mode, map->std);
829
830         ret = tda18271_init(fe);
831         if (tda_fail(ret))
832                 goto fail;
833
834         mutex_lock(&priv->lock);
835
836         switch (priv->id) {
837         case TDA18271HDC1:
838                 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
839                 break;
840         case TDA18271HDC2:
841                 tda18271c2_rf_tracking_filters_correction(fe, freq);
842                 break;
843         }
844         ret = tda18271_channel_configuration(fe, map, freq, bw);
845
846         mutex_unlock(&priv->lock);
847 fail:
848         return ret;
849 }
850
851 /* ------------------------------------------------------------------ */
852
853 static int tda18271_set_params(struct dvb_frontend *fe,
854                                struct dvb_frontend_parameters *params)
855 {
856         struct tda18271_priv *priv = fe->tuner_priv;
857         struct tda18271_std_map *std_map = &priv->std;
858         struct tda18271_std_map_item *map;
859         int ret;
860         u32 bw, freq = params->frequency;
861
862         priv->mode = TDA18271_DIGITAL;
863
864         if (fe->ops.info.type == FE_ATSC) {
865                 switch (params->u.vsb.modulation) {
866                 case VSB_8:
867                 case VSB_16:
868                         map = &std_map->atsc_6;
869                         break;
870                 case QAM_64:
871                 case QAM_256:
872                         map = &std_map->qam_6;
873                         break;
874                 default:
875                         tda_warn("modulation not set!\n");
876                         return -EINVAL;
877                 }
878 #if 0
879                 /* userspace request is already center adjusted */
880                 freq += 1750000; /* Adjust to center (+1.75MHZ) */
881 #endif
882                 bw = 6000000;
883         } else if (fe->ops.info.type == FE_OFDM) {
884                 switch (params->u.ofdm.bandwidth) {
885                 case BANDWIDTH_6_MHZ:
886                         bw = 6000000;
887                         map = &std_map->dvbt_6;
888                         break;
889                 case BANDWIDTH_7_MHZ:
890                         bw = 7000000;
891                         map = &std_map->dvbt_7;
892                         break;
893                 case BANDWIDTH_8_MHZ:
894                         bw = 8000000;
895                         map = &std_map->dvbt_8;
896                         break;
897                 default:
898                         tda_warn("bandwidth not set!\n");
899                         return -EINVAL;
900                 }
901         } else {
902                 tda_warn("modulation type not supported!\n");
903                 return -EINVAL;
904         }
905
906         /* When tuning digital, the analog demod must be tri-stated */
907         if (fe->ops.analog_ops.standby)
908                 fe->ops.analog_ops.standby(fe);
909
910         ret = tda18271_tune(fe, map, freq, bw);
911
912         if (tda_fail(ret))
913                 goto fail;
914
915         priv->frequency = freq;
916         priv->bandwidth = (fe->ops.info.type == FE_OFDM) ?
917                 params->u.ofdm.bandwidth : 0;
918 fail:
919         return ret;
920 }
921
922 static int tda18271_set_analog_params(struct dvb_frontend *fe,
923                                       struct analog_parameters *params)
924 {
925         struct tda18271_priv *priv = fe->tuner_priv;
926         struct tda18271_std_map *std_map = &priv->std;
927         struct tda18271_std_map_item *map;
928         char *mode;
929         int ret;
930         u32 freq = params->frequency * 62500;
931
932         priv->mode = TDA18271_ANALOG;
933
934         if (params->mode == V4L2_TUNER_RADIO) {
935                 freq = freq / 1000;
936                 map = &std_map->fm_radio;
937                 mode = "fm";
938         } else if (params->std & V4L2_STD_MN) {
939                 map = &std_map->atv_mn;
940                 mode = "MN";
941         } else if (params->std & V4L2_STD_B) {
942                 map = &std_map->atv_b;
943                 mode = "B";
944         } else if (params->std & V4L2_STD_GH) {
945                 map = &std_map->atv_gh;
946                 mode = "GH";
947         } else if (params->std & V4L2_STD_PAL_I) {
948                 map = &std_map->atv_i;
949                 mode = "I";
950         } else if (params->std & V4L2_STD_DK) {
951                 map = &std_map->atv_dk;
952                 mode = "DK";
953         } else if (params->std & V4L2_STD_SECAM_L) {
954                 map = &std_map->atv_l;
955                 mode = "L";
956         } else if (params->std & V4L2_STD_SECAM_LC) {
957                 map = &std_map->atv_lc;
958                 mode = "L'";
959         } else {
960                 map = &std_map->atv_i;
961                 mode = "xx";
962         }
963
964         tda_dbg("setting tda18271 to system %s\n", mode);
965
966         ret = tda18271_tune(fe, map, freq, 0);
967
968         if (tda_fail(ret))
969                 goto fail;
970
971         priv->frequency = freq;
972         priv->bandwidth = 0;
973 fail:
974         return ret;
975 }
976
977 static int tda18271_sleep(struct dvb_frontend *fe)
978 {
979         struct tda18271_priv *priv = fe->tuner_priv;
980         int ret;
981
982         mutex_lock(&priv->lock);
983
984         /* standby mode w/ slave tuner output
985          * & loop thru & xtal oscillator on */
986         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
987
988         mutex_unlock(&priv->lock);
989
990         return ret;
991 }
992
993 static int tda18271_release(struct dvb_frontend *fe)
994 {
995         struct tda18271_priv *priv = fe->tuner_priv;
996
997         mutex_lock(&tda18271_list_mutex);
998
999         if (priv)
1000                 hybrid_tuner_release_state(priv);
1001
1002         mutex_unlock(&tda18271_list_mutex);
1003
1004         fe->tuner_priv = NULL;
1005
1006         return 0;
1007 }
1008
1009 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1010 {
1011         struct tda18271_priv *priv = fe->tuner_priv;
1012         *frequency = priv->frequency;
1013         return 0;
1014 }
1015
1016 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1017 {
1018         struct tda18271_priv *priv = fe->tuner_priv;
1019         *bandwidth = priv->bandwidth;
1020         return 0;
1021 }
1022
1023 /* ------------------------------------------------------------------ */
1024
1025 #define tda18271_update_std(std_cfg, name) do {                         \
1026         if (map->std_cfg.if_freq +                                      \
1027                 map->std_cfg.agc_mode + map->std_cfg.std +              \
1028                 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) {     \
1029                 tda_dbg("Using custom std config for %s\n", name);      \
1030                 memcpy(&std->std_cfg, &map->std_cfg,                    \
1031                         sizeof(struct tda18271_std_map_item));          \
1032         } } while (0)
1033
1034 #define tda18271_dump_std_item(std_cfg, name) do {                      \
1035         tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, "          \
1036                 "if_lvl = %d, rfagc_top = 0x%02x\n",                    \
1037                 name, std->std_cfg.if_freq,                             \
1038                 std->std_cfg.agc_mode, std->std_cfg.std,                \
1039                 std->std_cfg.if_lvl, std->std_cfg.rfagc_top);           \
1040         } while (0)
1041
1042 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1043 {
1044         struct tda18271_priv *priv = fe->tuner_priv;
1045         struct tda18271_std_map *std = &priv->std;
1046
1047         tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1048         tda18271_dump_std_item(fm_radio, "  fm  ");
1049         tda18271_dump_std_item(atv_b,  "atv b ");
1050         tda18271_dump_std_item(atv_dk, "atv dk");
1051         tda18271_dump_std_item(atv_gh, "atv gh");
1052         tda18271_dump_std_item(atv_i,  "atv i ");
1053         tda18271_dump_std_item(atv_l,  "atv l ");
1054         tda18271_dump_std_item(atv_lc, "atv l'");
1055         tda18271_dump_std_item(atv_mn, "atv mn");
1056         tda18271_dump_std_item(atsc_6, "atsc 6");
1057         tda18271_dump_std_item(dvbt_6, "dvbt 6");
1058         tda18271_dump_std_item(dvbt_7, "dvbt 7");
1059         tda18271_dump_std_item(dvbt_8, "dvbt 8");
1060         tda18271_dump_std_item(qam_6,  "qam 6 ");
1061         tda18271_dump_std_item(qam_8,  "qam 8 ");
1062
1063         return 0;
1064 }
1065
1066 static int tda18271_update_std_map(struct dvb_frontend *fe,
1067                                    struct tda18271_std_map *map)
1068 {
1069         struct tda18271_priv *priv = fe->tuner_priv;
1070         struct tda18271_std_map *std = &priv->std;
1071
1072         if (!map)
1073                 return -EINVAL;
1074
1075         tda18271_update_std(fm_radio, "fm");
1076         tda18271_update_std(atv_b,  "atv b");
1077         tda18271_update_std(atv_dk, "atv dk");
1078         tda18271_update_std(atv_gh, "atv gh");
1079         tda18271_update_std(atv_i,  "atv i");
1080         tda18271_update_std(atv_l,  "atv l");
1081         tda18271_update_std(atv_lc, "atv l'");
1082         tda18271_update_std(atv_mn, "atv mn");
1083         tda18271_update_std(atsc_6, "atsc 6");
1084         tda18271_update_std(dvbt_6, "dvbt 6");
1085         tda18271_update_std(dvbt_7, "dvbt 7");
1086         tda18271_update_std(dvbt_8, "dvbt 8");
1087         tda18271_update_std(qam_6,  "qam 6");
1088         tda18271_update_std(qam_8,  "qam 8");
1089
1090         return 0;
1091 }
1092
1093 static int tda18271_get_id(struct dvb_frontend *fe)
1094 {
1095         struct tda18271_priv *priv = fe->tuner_priv;
1096         unsigned char *regs = priv->tda18271_regs;
1097         char *name;
1098         int ret = 0;
1099
1100         mutex_lock(&priv->lock);
1101         tda18271_read_regs(fe);
1102         mutex_unlock(&priv->lock);
1103
1104         switch (regs[R_ID] & 0x7f) {
1105         case 3:
1106                 name = "TDA18271HD/C1";
1107                 priv->id = TDA18271HDC1;
1108                 break;
1109         case 4:
1110                 name = "TDA18271HD/C2";
1111                 priv->id = TDA18271HDC2;
1112                 break;
1113         default:
1114                 name = "Unknown device";
1115                 ret = -EINVAL;
1116                 break;
1117         }
1118
1119         tda_info("%s detected @ %d-%04x%s\n", name,
1120                  i2c_adapter_id(priv->i2c_props.adap),
1121                  priv->i2c_props.addr,
1122                  (0 == ret) ? "" : ", device not supported.");
1123
1124         return ret;
1125 }
1126
1127 static struct dvb_tuner_ops tda18271_tuner_ops = {
1128         .info = {
1129                 .name = "NXP TDA18271HD",
1130                 .frequency_min  =  45000000,
1131                 .frequency_max  = 864000000,
1132                 .frequency_step =     62500
1133         },
1134         .init              = tda18271_init,
1135         .sleep             = tda18271_sleep,
1136         .set_params        = tda18271_set_params,
1137         .set_analog_params = tda18271_set_analog_params,
1138         .release           = tda18271_release,
1139         .get_frequency     = tda18271_get_frequency,
1140         .get_bandwidth     = tda18271_get_bandwidth,
1141 };
1142
1143 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1144                                      struct i2c_adapter *i2c,
1145                                      struct tda18271_config *cfg)
1146 {
1147         struct tda18271_priv *priv = NULL;
1148         int instance;
1149
1150         mutex_lock(&tda18271_list_mutex);
1151
1152         instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1153                                               hybrid_tuner_instance_list,
1154                                               i2c, addr, "tda18271");
1155         switch (instance) {
1156         case 0:
1157                 goto fail;
1158                 break;
1159         case 1:
1160                 /* new tuner instance */
1161                 priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1162                 priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1163                 priv->cal_initialized = false;
1164                 mutex_init(&priv->lock);
1165
1166                 fe->tuner_priv = priv;
1167
1168                 if (cfg)
1169                         priv->small_i2c = cfg->small_i2c;
1170
1171                 if (tda_fail(tda18271_get_id(fe)))
1172                         goto fail;
1173
1174                 if (tda_fail(tda18271_assign_map_layout(fe)))
1175                         goto fail;
1176
1177                 mutex_lock(&priv->lock);
1178                 tda18271_init_regs(fe);
1179
1180                 if ((tda18271_cal_on_startup) && (priv->id == TDA18271HDC2))
1181                         tda18271c2_rf_cal_init(fe);
1182
1183                 mutex_unlock(&priv->lock);
1184                 break;
1185         default:
1186                 /* existing tuner instance */
1187                 fe->tuner_priv = priv;
1188
1189                 /* allow dvb driver to override i2c gate setting */
1190                 if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG))
1191                         priv->gate = cfg->gate;
1192                 break;
1193         }
1194
1195         /* override default std map with values in config struct */
1196         if ((cfg) && (cfg->std_map))
1197                 tda18271_update_std_map(fe, cfg->std_map);
1198
1199         mutex_unlock(&tda18271_list_mutex);
1200
1201         memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1202                sizeof(struct dvb_tuner_ops));
1203
1204         if (tda18271_debug & (DBG_MAP | DBG_ADV))
1205                 tda18271_dump_std_map(fe);
1206
1207         return fe;
1208 fail:
1209         mutex_unlock(&tda18271_list_mutex);
1210
1211         tda18271_release(fe);
1212         return NULL;
1213 }
1214 EXPORT_SYMBOL_GPL(tda18271_attach);
1215 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1216 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1217 MODULE_LICENSE("GPL");
1218 MODULE_VERSION("0.3");
1219
1220 /*
1221  * Overrides for Emacs so that we follow Linus's tabbing style.
1222  * ---------------------------------------------------------------------------
1223  * Local variables:
1224  * c-basic-offset: 8
1225  * End:
1226  */