Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[linux-2.6.git] / 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 = -1;
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 int tda18271_toggle_output(struct dvb_frontend *fe, int standby)
40 {
41         struct tda18271_priv *priv = fe->tuner_priv;
42
43         int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0,
44                         priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0,
45                         priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0);
46
47         if (tda_fail(ret))
48                 goto fail;
49
50         tda_dbg("%s mode: xtal oscillator %s, slave tuner loop thru %s\n",
51                 standby ? "standby" : "active",
52                 priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on",
53                 priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on");
54 fail:
55         return ret;
56 }
57
58 /*---------------------------------------------------------------------*/
59
60 static inline int charge_pump_source(struct dvb_frontend *fe, int force)
61 {
62         struct tda18271_priv *priv = fe->tuner_priv;
63         return tda18271_charge_pump_source(fe,
64                                            (priv->role == TDA18271_SLAVE) ?
65                                            TDA18271_CAL_PLL :
66                                            TDA18271_MAIN_PLL, force);
67 }
68
69 static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
70 {
71         struct tda18271_priv *priv = fe->tuner_priv;
72         unsigned char *regs = priv->tda18271_regs;
73
74         switch (priv->mode) {
75         case TDA18271_ANALOG:
76                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
77                 break;
78         case TDA18271_DIGITAL:
79                 regs[R_MPD]  |= 0x80; /* IF notch = 1 */
80                 break;
81         }
82 }
83
84 static int tda18271_channel_configuration(struct dvb_frontend *fe,
85                                           struct tda18271_std_map_item *map,
86                                           u32 freq, u32 bw)
87 {
88         struct tda18271_priv *priv = fe->tuner_priv;
89         unsigned char *regs = priv->tda18271_regs;
90         int ret;
91         u32 N;
92
93         /* update TV broadcast parameters */
94
95         /* set standard */
96         regs[R_EP3]  &= ~0x1f; /* clear std bits */
97         regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
98
99         if (priv->id == TDA18271HDC2) {
100                 /* set rfagc to high speed mode */
101                 regs[R_EP3] &= ~0x04;
102         }
103
104         /* set cal mode to normal */
105         regs[R_EP4]  &= ~0x03;
106
107         /* update IF output level */
108         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
109         regs[R_EP4]  |= (map->if_lvl << 2);
110
111         /* update FM_RFn */
112         regs[R_EP4]  &= ~0x80;
113         regs[R_EP4]  |= map->fm_rfn << 7;
114
115         /* update rf top / if top */
116         regs[R_EB22]  = 0x00;
117         regs[R_EB22] |= map->rfagc_top;
118         ret = tda18271_write_regs(fe, R_EB22, 1);
119         if (tda_fail(ret))
120                 goto fail;
121
122         /* --------------------------------------------------------------- */
123
124         /* disable Power Level Indicator */
125         regs[R_EP1]  |= 0x40;
126
127         /* make sure thermometer is off */
128         regs[R_TM]   &= ~0x10;
129
130         /* frequency dependent parameters */
131
132         tda18271_calc_ir_measure(fe, &freq);
133
134         tda18271_calc_bp_filter(fe, &freq);
135
136         tda18271_calc_rf_band(fe, &freq);
137
138         tda18271_calc_gain_taper(fe, &freq);
139
140         /* --------------------------------------------------------------- */
141
142         /* dual tuner and agc1 extra configuration */
143
144         switch (priv->role) {
145         case TDA18271_MASTER:
146                 regs[R_EB1]  |= 0x04; /* main vco */
147                 break;
148         case TDA18271_SLAVE:
149                 regs[R_EB1]  &= ~0x04; /* cal vco */
150                 break;
151         }
152
153         /* agc1 always active */
154         regs[R_EB1]  &= ~0x02;
155
156         /* agc1 has priority on agc2 */
157         regs[R_EB1]  &= ~0x01;
158
159         ret = tda18271_write_regs(fe, R_EB1, 1);
160         if (tda_fail(ret))
161                 goto fail;
162
163         /* --------------------------------------------------------------- */
164
165         N = map->if_freq * 1000 + freq;
166
167         switch (priv->role) {
168         case TDA18271_MASTER:
169                 tda18271_calc_main_pll(fe, N);
170                 tda18271_set_if_notch(fe);
171                 tda18271_write_regs(fe, R_MPD, 4);
172                 break;
173         case TDA18271_SLAVE:
174                 tda18271_calc_cal_pll(fe, N);
175                 tda18271_write_regs(fe, R_CPD, 4);
176
177                 regs[R_MPD] = regs[R_CPD] & 0x7f;
178                 tda18271_set_if_notch(fe);
179                 tda18271_write_regs(fe, R_MPD, 1);
180                 break;
181         }
182
183         ret = tda18271_write_regs(fe, R_TM, 7);
184         if (tda_fail(ret))
185                 goto fail;
186
187         /* force charge pump source */
188         charge_pump_source(fe, 1);
189
190         msleep(1);
191
192         /* return pll to normal operation */
193         charge_pump_source(fe, 0);
194
195         msleep(20);
196
197         if (priv->id == TDA18271HDC2) {
198                 /* set rfagc to normal speed mode */
199                 if (map->fm_rfn)
200                         regs[R_EP3] &= ~0x04;
201                 else
202                         regs[R_EP3] |= 0x04;
203                 ret = tda18271_write_regs(fe, R_EP3, 1);
204         }
205 fail:
206         return ret;
207 }
208
209 static int tda18271_read_thermometer(struct dvb_frontend *fe)
210 {
211         struct tda18271_priv *priv = fe->tuner_priv;
212         unsigned char *regs = priv->tda18271_regs;
213         int tm;
214
215         /* switch thermometer on */
216         regs[R_TM]   |= 0x10;
217         tda18271_write_regs(fe, R_TM, 1);
218
219         /* read thermometer info */
220         tda18271_read_regs(fe);
221
222         if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
223             (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
224
225                 if ((regs[R_TM] & 0x20) == 0x20)
226                         regs[R_TM] &= ~0x20;
227                 else
228                         regs[R_TM] |= 0x20;
229
230                 tda18271_write_regs(fe, R_TM, 1);
231
232                 msleep(10); /* temperature sensing */
233
234                 /* read thermometer info */
235                 tda18271_read_regs(fe);
236         }
237
238         tm = tda18271_lookup_thermometer(fe);
239
240         /* switch thermometer off */
241         regs[R_TM]   &= ~0x10;
242         tda18271_write_regs(fe, R_TM, 1);
243
244         /* set CAL mode to normal */
245         regs[R_EP4]  &= ~0x03;
246         tda18271_write_regs(fe, R_EP4, 1);
247
248         return tm;
249 }
250
251 /* ------------------------------------------------------------------ */
252
253 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
254                                                      u32 freq)
255 {
256         struct tda18271_priv *priv = fe->tuner_priv;
257         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
258         unsigned char *regs = priv->tda18271_regs;
259         int i, ret;
260         u8 tm_current, dc_over_dt, rf_tab;
261         s32 rfcal_comp, approx;
262
263         /* power up */
264         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
265         if (tda_fail(ret))
266                 goto fail;
267
268         /* read die current temperature */
269         tm_current = tda18271_read_thermometer(fe);
270
271         /* frequency dependent parameters */
272
273         tda18271_calc_rf_cal(fe, &freq);
274         rf_tab = regs[R_EB14];
275
276         i = tda18271_lookup_rf_band(fe, &freq, NULL);
277         if (tda_fail(i))
278                 return i;
279
280         if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
281                 approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) +
282                         map[i].rf_b1 + rf_tab;
283         } else {
284                 approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) +
285                         map[i].rf_b2 + rf_tab;
286         }
287
288         if (approx < 0)
289                 approx = 0;
290         if (approx > 255)
291                 approx = 255;
292
293         tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
294
295         /* calculate temperature compensation */
296         rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000;
297
298         regs[R_EB14] = (unsigned char)(approx + rfcal_comp);
299         ret = tda18271_write_regs(fe, R_EB14, 1);
300 fail:
301         return ret;
302 }
303
304 static int tda18271_por(struct dvb_frontend *fe)
305 {
306         struct tda18271_priv *priv = fe->tuner_priv;
307         unsigned char *regs = priv->tda18271_regs;
308         int ret;
309
310         /* power up detector 1 */
311         regs[R_EB12] &= ~0x20;
312         ret = tda18271_write_regs(fe, R_EB12, 1);
313         if (tda_fail(ret))
314                 goto fail;
315
316         regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
317         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
318         ret = tda18271_write_regs(fe, R_EB18, 1);
319         if (tda_fail(ret))
320                 goto fail;
321
322         regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
323
324         /* POR mode */
325         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
326         if (tda_fail(ret))
327                 goto fail;
328
329         /* disable 1.5 MHz low pass filter */
330         regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
331         regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
332         ret = tda18271_write_regs(fe, R_EB21, 3);
333 fail:
334         return ret;
335 }
336
337 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
338 {
339         struct tda18271_priv *priv = fe->tuner_priv;
340         unsigned char *regs = priv->tda18271_regs;
341         u32 N;
342
343         /* set CAL mode to normal */
344         regs[R_EP4]  &= ~0x03;
345         tda18271_write_regs(fe, R_EP4, 1);
346
347         /* switch off agc1 */
348         regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
349
350         regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
351         tda18271_write_regs(fe, R_EB18, 1);
352
353         /* frequency dependent parameters */
354
355         tda18271_calc_bp_filter(fe, &freq);
356         tda18271_calc_gain_taper(fe, &freq);
357         tda18271_calc_rf_band(fe, &freq);
358         tda18271_calc_km(fe, &freq);
359
360         tda18271_write_regs(fe, R_EP1, 3);
361         tda18271_write_regs(fe, R_EB13, 1);
362
363         /* main pll charge pump source */
364         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
365
366         /* cal pll charge pump source */
367         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
368
369         /* force dcdc converter to 0 V */
370         regs[R_EB14] = 0x00;
371         tda18271_write_regs(fe, R_EB14, 1);
372
373         /* disable plls lock */
374         regs[R_EB20] &= ~0x20;
375         tda18271_write_regs(fe, R_EB20, 1);
376
377         /* set CAL mode to RF tracking filter calibration */
378         regs[R_EP4]  |= 0x03;
379         tda18271_write_regs(fe, R_EP4, 2);
380
381         /* --------------------------------------------------------------- */
382
383         /* set the internal calibration signal */
384         N = freq;
385
386         tda18271_calc_cal_pll(fe, N);
387         tda18271_write_regs(fe, R_CPD, 4);
388
389         /* downconvert internal calibration */
390         N += 1000000;
391
392         tda18271_calc_main_pll(fe, N);
393         tda18271_write_regs(fe, R_MPD, 4);
394
395         msleep(5);
396
397         tda18271_write_regs(fe, R_EP2, 1);
398         tda18271_write_regs(fe, R_EP1, 1);
399         tda18271_write_regs(fe, R_EP2, 1);
400         tda18271_write_regs(fe, R_EP1, 1);
401
402         /* --------------------------------------------------------------- */
403
404         /* normal operation for the main pll */
405         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
406
407         /* normal operation for the cal pll  */
408         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
409
410         msleep(10); /* plls locking */
411
412         /* launch the rf tracking filters calibration */
413         regs[R_EB20]  |= 0x20;
414         tda18271_write_regs(fe, R_EB20, 1);
415
416         msleep(60); /* calibration */
417
418         /* --------------------------------------------------------------- */
419
420         /* set CAL mode to normal */
421         regs[R_EP4]  &= ~0x03;
422
423         /* switch on agc1 */
424         regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
425
426         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
427         tda18271_write_regs(fe, R_EB18, 1);
428
429         tda18271_write_regs(fe, R_EP3, 2);
430
431         /* synchronization */
432         tda18271_write_regs(fe, R_EP1, 1);
433
434         /* get calibration result */
435         tda18271_read_extended(fe);
436
437         return regs[R_EB14];
438 }
439
440 static int tda18271_powerscan(struct dvb_frontend *fe,
441                               u32 *freq_in, u32 *freq_out)
442 {
443         struct tda18271_priv *priv = fe->tuner_priv;
444         unsigned char *regs = priv->tda18271_regs;
445         int sgn, bcal, count, wait, ret;
446         u8 cid_target;
447         u16 count_limit;
448         u32 freq;
449
450         freq = *freq_in;
451
452         tda18271_calc_rf_band(fe, &freq);
453         tda18271_calc_rf_cal(fe, &freq);
454         tda18271_calc_gain_taper(fe, &freq);
455         tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
456
457         tda18271_write_regs(fe, R_EP2, 1);
458         tda18271_write_regs(fe, R_EB14, 1);
459
460         /* downconvert frequency */
461         freq += 1000000;
462
463         tda18271_calc_main_pll(fe, freq);
464         tda18271_write_regs(fe, R_MPD, 4);
465
466         msleep(5); /* pll locking */
467
468         /* detection mode */
469         regs[R_EP4]  &= ~0x03;
470         regs[R_EP4]  |= 0x01;
471         tda18271_write_regs(fe, R_EP4, 1);
472
473         /* launch power detection measurement */
474         tda18271_write_regs(fe, R_EP2, 1);
475
476         /* read power detection info, stored in EB10 */
477         ret = tda18271_read_extended(fe);
478         if (tda_fail(ret))
479                 return ret;
480
481         /* algorithm initialization */
482         sgn = 1;
483         *freq_out = *freq_in;
484         bcal = 0;
485         count = 0;
486         wait = false;
487
488         while ((regs[R_EB10] & 0x3f) < cid_target) {
489                 /* downconvert updated freq to 1 MHz */
490                 freq = *freq_in + (sgn * count) + 1000000;
491
492                 tda18271_calc_main_pll(fe, freq);
493                 tda18271_write_regs(fe, R_MPD, 4);
494
495                 if (wait) {
496                         msleep(5); /* pll locking */
497                         wait = false;
498                 } else
499                         udelay(100); /* pll locking */
500
501                 /* launch power detection measurement */
502                 tda18271_write_regs(fe, R_EP2, 1);
503
504                 /* read power detection info, stored in EB10 */
505                 ret = tda18271_read_extended(fe);
506                 if (tda_fail(ret))
507                         return ret;
508
509                 count += 200;
510
511                 if (count <= count_limit)
512                         continue;
513
514                 if (sgn <= 0)
515                         break;
516
517                 sgn = -1 * sgn;
518                 count = 200;
519                 wait = true;
520         }
521
522         if ((regs[R_EB10] & 0x3f) >= cid_target) {
523                 bcal = 1;
524                 *freq_out = freq - 1000000;
525         } else
526                 bcal = 0;
527
528         tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
529                 bcal, *freq_in, *freq_out, freq);
530
531         return bcal;
532 }
533
534 static int tda18271_powerscan_init(struct dvb_frontend *fe)
535 {
536         struct tda18271_priv *priv = fe->tuner_priv;
537         unsigned char *regs = priv->tda18271_regs;
538         int ret;
539
540         /* set standard to digital */
541         regs[R_EP3]  &= ~0x1f; /* clear std bits */
542         regs[R_EP3]  |= 0x12;
543
544         /* set cal mode to normal */
545         regs[R_EP4]  &= ~0x03;
546
547         /* update IF output level */
548         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
549
550         ret = tda18271_write_regs(fe, R_EP3, 2);
551         if (tda_fail(ret))
552                 goto fail;
553
554         regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
555         ret = tda18271_write_regs(fe, R_EB18, 1);
556         if (tda_fail(ret))
557                 goto fail;
558
559         regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
560
561         /* 1.5 MHz low pass filter */
562         regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
563         regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
564
565         ret = tda18271_write_regs(fe, R_EB21, 3);
566 fail:
567         return ret;
568 }
569
570 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
571 {
572         struct tda18271_priv *priv = fe->tuner_priv;
573         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
574         unsigned char *regs = priv->tda18271_regs;
575         int bcal, rf, i;
576         s32 divisor, dividend;
577 #define RF1 0
578 #define RF2 1
579 #define RF3 2
580         u32 rf_default[3];
581         u32 rf_freq[3];
582         s32 prog_cal[3];
583         s32 prog_tab[3];
584
585         i = tda18271_lookup_rf_band(fe, &freq, NULL);
586
587         if (tda_fail(i))
588                 return i;
589
590         rf_default[RF1] = 1000 * map[i].rf1_def;
591         rf_default[RF2] = 1000 * map[i].rf2_def;
592         rf_default[RF3] = 1000 * map[i].rf3_def;
593
594         for (rf = RF1; rf <= RF3; rf++) {
595                 if (0 == rf_default[rf])
596                         return 0;
597                 tda_cal("freq = %d, rf = %d\n", freq, rf);
598
599                 /* look for optimized calibration frequency */
600                 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
601                 if (tda_fail(bcal))
602                         return bcal;
603
604                 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
605                 prog_tab[rf] = (s32)regs[R_EB14];
606
607                 if (1 == bcal)
608                         prog_cal[rf] =
609                                 (s32)tda18271_calibrate_rf(fe, rf_freq[rf]);
610                 else
611                         prog_cal[rf] = prog_tab[rf];
612
613                 switch (rf) {
614                 case RF1:
615                         map[i].rf_a1 = 0;
616                         map[i].rf_b1 = (prog_cal[RF1] - prog_tab[RF1]);
617                         map[i].rf1   = rf_freq[RF1] / 1000;
618                         break;
619                 case RF2:
620                         dividend = (prog_cal[RF2] - prog_tab[RF2] -
621                                     prog_cal[RF1] + prog_tab[RF1]);
622                         divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000;
623                         map[i].rf_a1 = (dividend / divisor);
624                         map[i].rf2   = rf_freq[RF2] / 1000;
625                         break;
626                 case RF3:
627                         dividend = (prog_cal[RF3] - prog_tab[RF3] -
628                                     prog_cal[RF2] + prog_tab[RF2]);
629                         divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000;
630                         map[i].rf_a2 = (dividend / divisor);
631                         map[i].rf_b2 = (prog_cal[RF2] - prog_tab[RF2]);
632                         map[i].rf3   = rf_freq[RF3] / 1000;
633                         break;
634                 default:
635                         BUG();
636                 }
637         }
638
639         return 0;
640 }
641
642 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
643 {
644         struct tda18271_priv *priv = fe->tuner_priv;
645         unsigned int i;
646         int ret;
647
648         tda_info("tda18271: performing RF tracking filter calibration\n");
649
650         /* wait for die temperature stabilization */
651         msleep(200);
652
653         ret = tda18271_powerscan_init(fe);
654         if (tda_fail(ret))
655                 goto fail;
656
657         /* rf band calibration */
658         for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
659                 ret =
660                 tda18271_rf_tracking_filters_init(fe, 1000 *
661                                                   priv->rf_cal_state[i].rfmax);
662                 if (tda_fail(ret))
663                         goto fail;
664         }
665
666         priv->tm_rfcal = tda18271_read_thermometer(fe);
667 fail:
668         return ret;
669 }
670
671 /* ------------------------------------------------------------------ */
672
673 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
674 {
675         struct tda18271_priv *priv = fe->tuner_priv;
676         unsigned char *regs = priv->tda18271_regs;
677         int ret;
678
679         /* test RF_CAL_OK to see if we need init */
680         if ((regs[R_EP1] & 0x10) == 0)
681                 priv->cal_initialized = false;
682
683         if (priv->cal_initialized)
684                 return 0;
685
686         ret = tda18271_calc_rf_filter_curve(fe);
687         if (tda_fail(ret))
688                 goto fail;
689
690         ret = tda18271_por(fe);
691         if (tda_fail(ret))
692                 goto fail;
693
694         tda_info("tda18271: RF tracking filter calibration complete\n");
695
696         priv->cal_initialized = true;
697         goto end;
698 fail:
699         tda_info("tda18271: RF tracking filter calibration failed!\n");
700 end:
701         return ret;
702 }
703
704 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
705                                                      u32 freq, u32 bw)
706 {
707         struct tda18271_priv *priv = fe->tuner_priv;
708         unsigned char *regs = priv->tda18271_regs;
709         int ret;
710         u32 N = 0;
711
712         /* calculate bp filter */
713         tda18271_calc_bp_filter(fe, &freq);
714         tda18271_write_regs(fe, R_EP1, 1);
715
716         regs[R_EB4]  &= 0x07;
717         regs[R_EB4]  |= 0x60;
718         tda18271_write_regs(fe, R_EB4, 1);
719
720         regs[R_EB7]   = 0x60;
721         tda18271_write_regs(fe, R_EB7, 1);
722
723         regs[R_EB14]  = 0x00;
724         tda18271_write_regs(fe, R_EB14, 1);
725
726         regs[R_EB20]  = 0xcc;
727         tda18271_write_regs(fe, R_EB20, 1);
728
729         /* set cal mode to RF tracking filter calibration */
730         regs[R_EP4]  |= 0x03;
731
732         /* calculate cal pll */
733
734         switch (priv->mode) {
735         case TDA18271_ANALOG:
736                 N = freq - 1250000;
737                 break;
738         case TDA18271_DIGITAL:
739                 N = freq + bw / 2;
740                 break;
741         }
742
743         tda18271_calc_cal_pll(fe, N);
744
745         /* calculate main pll */
746
747         switch (priv->mode) {
748         case TDA18271_ANALOG:
749                 N = freq - 250000;
750                 break;
751         case TDA18271_DIGITAL:
752                 N = freq + bw / 2 + 1000000;
753                 break;
754         }
755
756         tda18271_calc_main_pll(fe, N);
757
758         ret = tda18271_write_regs(fe, R_EP3, 11);
759         if (tda_fail(ret))
760                 return ret;
761
762         msleep(5); /* RF tracking filter calibration initialization */
763
764         /* search for K,M,CO for RF calibration */
765         tda18271_calc_km(fe, &freq);
766         tda18271_write_regs(fe, R_EB13, 1);
767
768         /* search for rf band */
769         tda18271_calc_rf_band(fe, &freq);
770
771         /* search for gain taper */
772         tda18271_calc_gain_taper(fe, &freq);
773
774         tda18271_write_regs(fe, R_EP2, 1);
775         tda18271_write_regs(fe, R_EP1, 1);
776         tda18271_write_regs(fe, R_EP2, 1);
777         tda18271_write_regs(fe, R_EP1, 1);
778
779         regs[R_EB4]  &= 0x07;
780         regs[R_EB4]  |= 0x40;
781         tda18271_write_regs(fe, R_EB4, 1);
782
783         regs[R_EB7]   = 0x40;
784         tda18271_write_regs(fe, R_EB7, 1);
785         msleep(10); /* pll locking */
786
787         regs[R_EB20]  = 0xec;
788         tda18271_write_regs(fe, R_EB20, 1);
789         msleep(60); /* RF tracking filter calibration completion */
790
791         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
792         tda18271_write_regs(fe, R_EP4, 1);
793
794         tda18271_write_regs(fe, R_EP1, 1);
795
796         /* RF tracking filter correction for VHF_Low band */
797         if (0 == tda18271_calc_rf_cal(fe, &freq))
798                 tda18271_write_regs(fe, R_EB14, 1);
799
800         return 0;
801 }
802
803 /* ------------------------------------------------------------------ */
804
805 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
806 {
807         struct tda18271_priv *priv = fe->tuner_priv;
808         unsigned char *regs = priv->tda18271_regs;
809         int ret;
810
811         ret = tda18271_read_regs(fe);
812         if (tda_fail(ret))
813                 goto fail;
814
815         /* test IR_CAL_OK to see if we need init */
816         if ((regs[R_EP1] & 0x08) == 0)
817                 ret = tda18271_init_regs(fe);
818 fail:
819         return ret;
820 }
821
822 static int tda18271_init(struct dvb_frontend *fe)
823 {
824         struct tda18271_priv *priv = fe->tuner_priv;
825         int ret;
826
827         mutex_lock(&priv->lock);
828
829         /* full power up */
830         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
831         if (tda_fail(ret))
832                 goto fail;
833
834         /* initialization */
835         ret = tda18271_ir_cal_init(fe);
836         if (tda_fail(ret))
837                 goto fail;
838
839         if (priv->id == TDA18271HDC2)
840                 tda18271c2_rf_cal_init(fe);
841 fail:
842         mutex_unlock(&priv->lock);
843
844         return ret;
845 }
846
847 static int tda18271_sleep(struct dvb_frontend *fe)
848 {
849         struct tda18271_priv *priv = fe->tuner_priv;
850         int ret;
851
852         mutex_lock(&priv->lock);
853
854         /* enter standby mode, with required output features enabled */
855         ret = tda18271_toggle_output(fe, 1);
856
857         mutex_unlock(&priv->lock);
858
859         return ret;
860 }
861
862 /* ------------------------------------------------------------------ */
863
864 static int tda18271_agc(struct dvb_frontend *fe)
865 {
866         struct tda18271_priv *priv = fe->tuner_priv;
867         int ret = 0;
868
869         switch (priv->config) {
870         case 0:
871                 /* no external agc configuration required */
872                 if (tda18271_debug & DBG_ADV)
873                         tda_dbg("no agc configuration provided\n");
874                 break;
875         case 3:
876                 /* switch with GPIO of saa713x */
877                 tda_dbg("invoking callback\n");
878                 if (fe->callback)
879                         ret = fe->callback(priv->i2c_props.adap->algo_data,
880                                            DVB_FRONTEND_COMPONENT_TUNER,
881                                            TDA18271_CALLBACK_CMD_AGC_ENABLE,
882                                            priv->mode);
883                 break;
884         case 1:
885         case 2:
886         default:
887                 /* n/a - currently not supported */
888                 tda_err("unsupported configuration: %d\n", priv->config);
889                 ret = -EINVAL;
890                 break;
891         }
892         return ret;
893 }
894
895 static int tda18271_tune(struct dvb_frontend *fe,
896                          struct tda18271_std_map_item *map, u32 freq, u32 bw)
897 {
898         struct tda18271_priv *priv = fe->tuner_priv;
899         int ret;
900
901         tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
902                 freq, map->if_freq, bw, map->agc_mode, map->std);
903
904         ret = tda18271_agc(fe);
905         if (tda_fail(ret))
906                 tda_warn("failed to configure agc\n");
907
908         ret = tda18271_init(fe);
909         if (tda_fail(ret))
910                 goto fail;
911
912         mutex_lock(&priv->lock);
913
914         switch (priv->id) {
915         case TDA18271HDC1:
916                 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
917                 break;
918         case TDA18271HDC2:
919                 tda18271c2_rf_tracking_filters_correction(fe, freq);
920                 break;
921         }
922         ret = tda18271_channel_configuration(fe, map, freq, bw);
923
924         mutex_unlock(&priv->lock);
925 fail:
926         return ret;
927 }
928
929 /* ------------------------------------------------------------------ */
930
931 static int tda18271_set_params(struct dvb_frontend *fe)
932 {
933         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
934         u32 delsys = c->delivery_system;
935         u32 bw = c->bandwidth_hz;
936         u32 freq = c->frequency;
937         struct tda18271_priv *priv = fe->tuner_priv;
938         struct tda18271_std_map *std_map = &priv->std;
939         struct tda18271_std_map_item *map;
940         int ret;
941
942         priv->mode = TDA18271_DIGITAL;
943
944         switch (delsys) {
945         case SYS_ATSC:
946                 map = &std_map->atsc_6;
947                 bw = 6000000;
948                 break;
949         case SYS_ISDBT:
950         case SYS_DVBT:
951         case SYS_DVBT2:
952                 if (bw <= 6000000) {
953                         map = &std_map->dvbt_6;
954                 } else if (bw <= 7000000) {
955                         map = &std_map->dvbt_7;
956                 } else {
957                         map = &std_map->dvbt_8;
958                 }
959                 break;
960         case SYS_DVBC_ANNEX_B:
961                 bw = 6000000;
962                 /* falltrough */
963         case SYS_DVBC_ANNEX_A:
964         case SYS_DVBC_ANNEX_C:
965                 if (bw <= 6000000) {
966                         map = &std_map->qam_6;
967                 } else if (bw <= 7000000) {
968                         map = &std_map->qam_7;
969                 } else {
970                         map = &std_map->qam_8;
971                 }
972                 break;
973         default:
974                 tda_warn("modulation type not supported!\n");
975                 return -EINVAL;
976         }
977
978         /* When tuning digital, the analog demod must be tri-stated */
979         if (fe->ops.analog_ops.standby)
980                 fe->ops.analog_ops.standby(fe);
981
982         ret = tda18271_tune(fe, map, freq, bw);
983
984         if (tda_fail(ret))
985                 goto fail;
986
987         priv->if_freq   = map->if_freq;
988         priv->frequency = freq;
989         priv->bandwidth = bw;
990 fail:
991         return ret;
992 }
993
994 static int tda18271_set_analog_params(struct dvb_frontend *fe,
995                                       struct analog_parameters *params)
996 {
997         struct tda18271_priv *priv = fe->tuner_priv;
998         struct tda18271_std_map *std_map = &priv->std;
999         struct tda18271_std_map_item *map;
1000         char *mode;
1001         int ret;
1002         u32 freq = params->frequency * 125 *
1003                 ((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2;
1004
1005         priv->mode = TDA18271_ANALOG;
1006
1007         if (params->mode == V4L2_TUNER_RADIO) {
1008                 map = &std_map->fm_radio;
1009                 mode = "fm";
1010         } else if (params->std & V4L2_STD_MN) {
1011                 map = &std_map->atv_mn;
1012                 mode = "MN";
1013         } else if (params->std & V4L2_STD_B) {
1014                 map = &std_map->atv_b;
1015                 mode = "B";
1016         } else if (params->std & V4L2_STD_GH) {
1017                 map = &std_map->atv_gh;
1018                 mode = "GH";
1019         } else if (params->std & V4L2_STD_PAL_I) {
1020                 map = &std_map->atv_i;
1021                 mode = "I";
1022         } else if (params->std & V4L2_STD_DK) {
1023                 map = &std_map->atv_dk;
1024                 mode = "DK";
1025         } else if (params->std & V4L2_STD_SECAM_L) {
1026                 map = &std_map->atv_l;
1027                 mode = "L";
1028         } else if (params->std & V4L2_STD_SECAM_LC) {
1029                 map = &std_map->atv_lc;
1030                 mode = "L'";
1031         } else {
1032                 map = &std_map->atv_i;
1033                 mode = "xx";
1034         }
1035
1036         tda_dbg("setting tda18271 to system %s\n", mode);
1037
1038         ret = tda18271_tune(fe, map, freq, 0);
1039
1040         if (tda_fail(ret))
1041                 goto fail;
1042
1043         priv->if_freq   = map->if_freq;
1044         priv->frequency = freq;
1045         priv->bandwidth = 0;
1046 fail:
1047         return ret;
1048 }
1049
1050 static int tda18271_release(struct dvb_frontend *fe)
1051 {
1052         struct tda18271_priv *priv = fe->tuner_priv;
1053
1054         mutex_lock(&tda18271_list_mutex);
1055
1056         if (priv)
1057                 hybrid_tuner_release_state(priv);
1058
1059         mutex_unlock(&tda18271_list_mutex);
1060
1061         fe->tuner_priv = NULL;
1062
1063         return 0;
1064 }
1065
1066 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1067 {
1068         struct tda18271_priv *priv = fe->tuner_priv;
1069         *frequency = priv->frequency;
1070         return 0;
1071 }
1072
1073 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1074 {
1075         struct tda18271_priv *priv = fe->tuner_priv;
1076         *bandwidth = priv->bandwidth;
1077         return 0;
1078 }
1079
1080 static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
1081 {
1082         struct tda18271_priv *priv = fe->tuner_priv;
1083         *frequency = (u32)priv->if_freq * 1000;
1084         return 0;
1085 }
1086
1087 /* ------------------------------------------------------------------ */
1088
1089 #define tda18271_update_std(std_cfg, name) do {                         \
1090         if (map->std_cfg.if_freq +                                      \
1091                 map->std_cfg.agc_mode + map->std_cfg.std +              \
1092                 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) {     \
1093                 tda_dbg("Using custom std config for %s\n", name);      \
1094                 memcpy(&std->std_cfg, &map->std_cfg,                    \
1095                         sizeof(struct tda18271_std_map_item));          \
1096         } } while (0)
1097
1098 #define tda18271_dump_std_item(std_cfg, name) do {                      \
1099         tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, "          \
1100                 "if_lvl = %d, rfagc_top = 0x%02x\n",                    \
1101                 name, std->std_cfg.if_freq,                             \
1102                 std->std_cfg.agc_mode, std->std_cfg.std,                \
1103                 std->std_cfg.if_lvl, std->std_cfg.rfagc_top);           \
1104         } while (0)
1105
1106 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1107 {
1108         struct tda18271_priv *priv = fe->tuner_priv;
1109         struct tda18271_std_map *std = &priv->std;
1110
1111         tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1112         tda18271_dump_std_item(fm_radio, "  fm  ");
1113         tda18271_dump_std_item(atv_b,  "atv b ");
1114         tda18271_dump_std_item(atv_dk, "atv dk");
1115         tda18271_dump_std_item(atv_gh, "atv gh");
1116         tda18271_dump_std_item(atv_i,  "atv i ");
1117         tda18271_dump_std_item(atv_l,  "atv l ");
1118         tda18271_dump_std_item(atv_lc, "atv l'");
1119         tda18271_dump_std_item(atv_mn, "atv mn");
1120         tda18271_dump_std_item(atsc_6, "atsc 6");
1121         tda18271_dump_std_item(dvbt_6, "dvbt 6");
1122         tda18271_dump_std_item(dvbt_7, "dvbt 7");
1123         tda18271_dump_std_item(dvbt_8, "dvbt 8");
1124         tda18271_dump_std_item(qam_6,  "qam 6 ");
1125         tda18271_dump_std_item(qam_8,  "qam 8 ");
1126
1127         return 0;
1128 }
1129
1130 static int tda18271_update_std_map(struct dvb_frontend *fe,
1131                                    struct tda18271_std_map *map)
1132 {
1133         struct tda18271_priv *priv = fe->tuner_priv;
1134         struct tda18271_std_map *std = &priv->std;
1135
1136         if (!map)
1137                 return -EINVAL;
1138
1139         tda18271_update_std(fm_radio, "fm");
1140         tda18271_update_std(atv_b,  "atv b");
1141         tda18271_update_std(atv_dk, "atv dk");
1142         tda18271_update_std(atv_gh, "atv gh");
1143         tda18271_update_std(atv_i,  "atv i");
1144         tda18271_update_std(atv_l,  "atv l");
1145         tda18271_update_std(atv_lc, "atv l'");
1146         tda18271_update_std(atv_mn, "atv mn");
1147         tda18271_update_std(atsc_6, "atsc 6");
1148         tda18271_update_std(dvbt_6, "dvbt 6");
1149         tda18271_update_std(dvbt_7, "dvbt 7");
1150         tda18271_update_std(dvbt_8, "dvbt 8");
1151         tda18271_update_std(qam_6,  "qam 6");
1152         tda18271_update_std(qam_8,  "qam 8");
1153
1154         return 0;
1155 }
1156
1157 static int tda18271_get_id(struct dvb_frontend *fe)
1158 {
1159         struct tda18271_priv *priv = fe->tuner_priv;
1160         unsigned char *regs = priv->tda18271_regs;
1161         char *name;
1162
1163         mutex_lock(&priv->lock);
1164         tda18271_read_regs(fe);
1165         mutex_unlock(&priv->lock);
1166
1167         switch (regs[R_ID] & 0x7f) {
1168         case 3:
1169                 name = "TDA18271HD/C1";
1170                 priv->id = TDA18271HDC1;
1171                 break;
1172         case 4:
1173                 name = "TDA18271HD/C2";
1174                 priv->id = TDA18271HDC2;
1175                 break;
1176         default:
1177                 tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n",
1178                          regs[R_ID], i2c_adapter_id(priv->i2c_props.adap),
1179                          priv->i2c_props.addr);
1180                 return -EINVAL;
1181         }
1182
1183         tda_info("%s detected @ %d-%04x\n", name,
1184                  i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr);
1185
1186         return 0;
1187 }
1188
1189 static int tda18271_setup_configuration(struct dvb_frontend *fe,
1190                                         struct tda18271_config *cfg)
1191 {
1192         struct tda18271_priv *priv = fe->tuner_priv;
1193
1194         priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1195         priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1196         priv->config = (cfg) ? cfg->config : 0;
1197         priv->small_i2c = (cfg) ?
1198                 cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT;
1199         priv->output_opt = (cfg) ?
1200                 cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON;
1201
1202         return 0;
1203 }
1204
1205 static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg)
1206 {
1207         /* tda18271_cal_on_startup == -1 when cal module option is unset */
1208         return ((tda18271_cal_on_startup == -1) ?
1209                 /* honor configuration setting */
1210                 ((cfg) && (cfg->rf_cal_on_startup)) :
1211                 /* module option overrides configuration setting */
1212                 (tda18271_cal_on_startup)) ? 1 : 0;
1213 }
1214
1215 static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg)
1216 {
1217         struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg;
1218
1219         tda18271_setup_configuration(fe, cfg);
1220
1221         if (tda18271_need_cal_on_startup(cfg))
1222                 tda18271_init(fe);
1223
1224         /* override default std map with values in config struct */
1225         if ((cfg) && (cfg->std_map))
1226                 tda18271_update_std_map(fe, cfg->std_map);
1227
1228         return 0;
1229 }
1230
1231 static const struct dvb_tuner_ops tda18271_tuner_ops = {
1232         .info = {
1233                 .name = "NXP TDA18271HD",
1234                 .frequency_min  =  45000000,
1235                 .frequency_max  = 864000000,
1236                 .frequency_step =     62500
1237         },
1238         .init              = tda18271_init,
1239         .sleep             = tda18271_sleep,
1240         .set_params        = tda18271_set_params,
1241         .set_analog_params = tda18271_set_analog_params,
1242         .release           = tda18271_release,
1243         .set_config        = tda18271_set_config,
1244         .get_frequency     = tda18271_get_frequency,
1245         .get_bandwidth     = tda18271_get_bandwidth,
1246         .get_if_frequency  = tda18271_get_if_frequency,
1247 };
1248
1249 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1250                                      struct i2c_adapter *i2c,
1251                                      struct tda18271_config *cfg)
1252 {
1253         struct tda18271_priv *priv = NULL;
1254         int instance, ret;
1255
1256         mutex_lock(&tda18271_list_mutex);
1257
1258         instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1259                                               hybrid_tuner_instance_list,
1260                                               i2c, addr, "tda18271");
1261         switch (instance) {
1262         case 0:
1263                 goto fail;
1264         case 1:
1265                 /* new tuner instance */
1266                 fe->tuner_priv = priv;
1267
1268                 tda18271_setup_configuration(fe, cfg);
1269
1270                 priv->cal_initialized = false;
1271                 mutex_init(&priv->lock);
1272
1273                 ret = tda18271_get_id(fe);
1274                 if (tda_fail(ret))
1275                         goto fail;
1276
1277                 ret = tda18271_assign_map_layout(fe);
1278                 if (tda_fail(ret))
1279                         goto fail;
1280
1281                 mutex_lock(&priv->lock);
1282                 tda18271_init_regs(fe);
1283
1284                 if ((tda18271_need_cal_on_startup(cfg)) &&
1285                     (priv->id == TDA18271HDC2))
1286                         tda18271c2_rf_cal_init(fe);
1287
1288                 mutex_unlock(&priv->lock);
1289                 break;
1290         default:
1291                 /* existing tuner instance */
1292                 fe->tuner_priv = priv;
1293
1294                 /* allow dvb driver to override configuration settings */
1295                 if (cfg) {
1296                         if (cfg->gate != TDA18271_GATE_ANALOG)
1297                                 priv->gate = cfg->gate;
1298                         if (cfg->role)
1299                                 priv->role = cfg->role;
1300                         if (cfg->config)
1301                                 priv->config = cfg->config;
1302                         if (cfg->small_i2c)
1303                                 priv->small_i2c = cfg->small_i2c;
1304                         if (cfg->output_opt)
1305                                 priv->output_opt = cfg->output_opt;
1306                         if (cfg->std_map)
1307                                 tda18271_update_std_map(fe, cfg->std_map);
1308                 }
1309                 if (tda18271_need_cal_on_startup(cfg))
1310                         tda18271_init(fe);
1311                 break;
1312         }
1313
1314         /* override default std map with values in config struct */
1315         if ((cfg) && (cfg->std_map))
1316                 tda18271_update_std_map(fe, cfg->std_map);
1317
1318         mutex_unlock(&tda18271_list_mutex);
1319
1320         memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1321                sizeof(struct dvb_tuner_ops));
1322
1323         if (tda18271_debug & (DBG_MAP | DBG_ADV))
1324                 tda18271_dump_std_map(fe);
1325
1326         return fe;
1327 fail:
1328         mutex_unlock(&tda18271_list_mutex);
1329
1330         tda18271_release(fe);
1331         return NULL;
1332 }
1333 EXPORT_SYMBOL_GPL(tda18271_attach);
1334 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1335 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1336 MODULE_LICENSE("GPL");
1337 MODULE_VERSION("0.4");
1338
1339 /*
1340  * Overrides for Emacs so that we follow Linus's tabbing style.
1341  * ---------------------------------------------------------------------------
1342  * Local variables:
1343  * c-basic-offset: 8
1344  * End:
1345  */