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path: root/drivers/media/tuners/tda18271-fe.c
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Diffstat (limited to 'drivers/media/tuners/tda18271-fe.c')
-rw-r--r--drivers/media/tuners/tda18271-fe.c1345
1 files changed, 1345 insertions, 0 deletions
diff --git a/drivers/media/tuners/tda18271-fe.c b/drivers/media/tuners/tda18271-fe.c
new file mode 100644
index 000000000000..2e67f4459904
--- /dev/null
+++ b/drivers/media/tuners/tda18271-fe.c
@@ -0,0 +1,1345 @@
1/*
2 tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
3
4 Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19*/
20
21#include <linux/delay.h>
22#include <linux/videodev2.h>
23#include "tda18271-priv.h"
24
25int tda18271_debug;
26module_param_named(debug, tda18271_debug, int, 0644);
27MODULE_PARM_DESC(debug, "set debug level "
28 "(info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
29
30static int tda18271_cal_on_startup = -1;
31module_param_named(cal, tda18271_cal_on_startup, int, 0644);
32MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
33
34static DEFINE_MUTEX(tda18271_list_mutex);
35static LIST_HEAD(hybrid_tuner_instance_list);
36
37/*---------------------------------------------------------------------*/
38
39static 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");
54fail:
55 return ret;
56}
57
58/*---------------------------------------------------------------------*/
59
60static 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
69static 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
84static 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 }
205fail:
206 return ret;
207}
208
209static 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
253static 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);
300fail:
301 return ret;
302}
303
304static 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);
333fail:
334 return ret;
335}
336
337static 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
440static 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
534static 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);
566fail:
567 return ret;
568}
569
570static 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
642static 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);
667fail:
668 return ret;
669}
670
671/* ------------------------------------------------------------------ */
672
673static 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;
698fail:
699 tda_info("tda18271: RF tracking filter calibration failed!\n");
700end:
701 return ret;
702}
703
704static 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
805static 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);
818fail:
819 return ret;
820}
821
822static 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);
841fail:
842 mutex_unlock(&priv->lock);
843
844 return ret;
845}
846
847static 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
864static 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
895static 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);
925fail:
926 return ret;
927}
928
929/* ------------------------------------------------------------------ */
930
931static 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;
990fail:
991 return ret;
992}
993
994static 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;
1046fail:
1047 return ret;
1048}
1049
1050static 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
1066static 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
1073static 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
1080static 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
1106static 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
1130static 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
1157static 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
1189static 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
1205static 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
1215static 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
1231static 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
1249struct 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;
1327fail:
1328 mutex_unlock(&tda18271_list_mutex);
1329
1330 tda18271_release(fe);
1331 return NULL;
1332}
1333EXPORT_SYMBOL_GPL(tda18271_attach);
1334MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1335MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1336MODULE_LICENSE("GPL");
1337MODULE_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 */
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-17 11:19:38 -0500