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 "tda18271-priv.h"
22 #include "tda8290.h"
23 
24 #include <linux/delay.h>
25 #include <linux/videodev2.h>
26 
27 int tda18271_debug;
28 module_param_named(debug, tda18271_debug, int, 0644);
29 MODULE_PARM_DESC(debug, "set debug level (info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
30 
31 static int tda18271_cal_on_startup = -1;
32 module_param_named(cal, tda18271_cal_on_startup, int, 0644);
33 MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
34 
35 static DEFINE_MUTEX(tda18271_list_mutex);
36 static LIST_HEAD(hybrid_tuner_instance_list);
37 
38 /*---------------------------------------------------------------------*/
39 
40 static int tda18271_toggle_output(struct dvb_frontend *fe, int standby)
41 {
42 	struct tda18271_priv *priv = fe->tuner_priv;
43 
44 	int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0,
45 			priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0,
46 			priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0);
47 
48 	if (tda_fail(ret))
49 		goto fail;
50 
51 	tda_dbg("%s mode: xtal oscillator %s, slave tuner loop through %s\n",
52 		standby ? "standby" : "active",
53 		priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on",
54 		priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on");
55 fail:
56 	return ret;
57 }
58 
59 /*---------------------------------------------------------------------*/
60 
61 static inline int charge_pump_source(struct dvb_frontend *fe, int force)
62 {
63 	struct tda18271_priv *priv = fe->tuner_priv;
64 	return tda18271_charge_pump_source(fe,
65 					   (priv->role == TDA18271_SLAVE) ?
66 					   TDA18271_CAL_PLL :
67 					   TDA18271_MAIN_PLL, force);
68 }
69 
70 static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
71 {
72 	struct tda18271_priv *priv = fe->tuner_priv;
73 	unsigned char *regs = priv->tda18271_regs;
74 
75 	switch (priv->mode) {
76 	case TDA18271_ANALOG:
77 		regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
78 		break;
79 	case TDA18271_DIGITAL:
80 		regs[R_MPD]  |= 0x80; /* IF notch = 1 */
81 		break;
82 	}
83 }
84 
85 static int tda18271_channel_configuration(struct dvb_frontend *fe,
86 					  struct tda18271_std_map_item *map,
87 					  u32 freq, u32 bw)
88 {
89 	struct tda18271_priv *priv = fe->tuner_priv;
90 	unsigned char *regs = priv->tda18271_regs;
91 	int ret;
92 	u32 N;
93 
94 	/* update TV broadcast parameters */
95 
96 	/* set standard */
97 	regs[R_EP3]  &= ~0x1f; /* clear std bits */
98 	regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
99 
100 	if (priv->id == TDA18271HDC2) {
101 		/* set rfagc to high speed mode */
102 		regs[R_EP3] &= ~0x04;
103 	}
104 
105 	/* set cal mode to normal */
106 	regs[R_EP4]  &= ~0x03;
107 
108 	/* update IF output level */
109 	regs[R_EP4]  &= ~0x1c; /* clear if level bits */
110 	regs[R_EP4]  |= (map->if_lvl << 2);
111 
112 	/* update FM_RFn */
113 	regs[R_EP4]  &= ~0x80;
114 	regs[R_EP4]  |= map->fm_rfn << 7;
115 
116 	/* update rf top / if top */
117 	regs[R_EB22]  = 0x00;
118 	regs[R_EB22] |= map->rfagc_top;
119 	ret = tda18271_write_regs(fe, R_EB22, 1);
120 	if (tda_fail(ret))
121 		goto fail;
122 
123 	/* --------------------------------------------------------------- */
124 
125 	/* disable Power Level Indicator */
126 	regs[R_EP1]  |= 0x40;
127 
128 	/* make sure thermometer is off */
129 	regs[R_TM]   &= ~0x10;
130 
131 	/* frequency dependent parameters */
132 
133 	tda18271_calc_ir_measure(fe, &freq);
134 
135 	tda18271_calc_bp_filter(fe, &freq);
136 
137 	tda18271_calc_rf_band(fe, &freq);
138 
139 	tda18271_calc_gain_taper(fe, &freq);
140 
141 	/* --------------------------------------------------------------- */
142 
143 	/* dual tuner and agc1 extra configuration */
144 
145 	switch (priv->role) {
146 	case TDA18271_MASTER:
147 		regs[R_EB1]  |= 0x04; /* main vco */
148 		break;
149 	case TDA18271_SLAVE:
150 		regs[R_EB1]  &= ~0x04; /* cal vco */
151 		break;
152 	}
153 
154 	/* agc1 always active */
155 	regs[R_EB1]  &= ~0x02;
156 
157 	/* agc1 has priority on agc2 */
158 	regs[R_EB1]  &= ~0x01;
159 
160 	ret = tda18271_write_regs(fe, R_EB1, 1);
161 	if (tda_fail(ret))
162 		goto fail;
163 
164 	/* --------------------------------------------------------------- */
165 
166 	N = map->if_freq * 1000 + freq;
167 
168 	switch (priv->role) {
169 	case TDA18271_MASTER:
170 		tda18271_calc_main_pll(fe, N);
171 		tda18271_set_if_notch(fe);
172 		tda18271_write_regs(fe, R_MPD, 4);
173 		break;
174 	case TDA18271_SLAVE:
175 		tda18271_calc_cal_pll(fe, N);
176 		tda18271_write_regs(fe, R_CPD, 4);
177 
178 		regs[R_MPD] = regs[R_CPD] & 0x7f;
179 		tda18271_set_if_notch(fe);
180 		tda18271_write_regs(fe, R_MPD, 1);
181 		break;
182 	}
183 
184 	ret = tda18271_write_regs(fe, R_TM, 7);
185 	if (tda_fail(ret))
186 		goto fail;
187 
188 	/* force charge pump source */
189 	charge_pump_source(fe, 1);
190 
191 	msleep(1);
192 
193 	/* return pll to normal operation */
194 	charge_pump_source(fe, 0);
195 
196 	msleep(20);
197 
198 	if (priv->id == TDA18271HDC2) {
199 		/* set rfagc to normal speed mode */
200 		if (map->fm_rfn)
201 			regs[R_EP3] &= ~0x04;
202 		else
203 			regs[R_EP3] |= 0x04;
204 		ret = tda18271_write_regs(fe, R_EP3, 1);
205 	}
206 fail:
207 	return ret;
208 }
209 
210 static int tda18271_read_thermometer(struct dvb_frontend *fe)
211 {
212 	struct tda18271_priv *priv = fe->tuner_priv;
213 	unsigned char *regs = priv->tda18271_regs;
214 	int tm;
215 
216 	/* switch thermometer on */
217 	regs[R_TM]   |= 0x10;
218 	tda18271_write_regs(fe, R_TM, 1);
219 
220 	/* read thermometer info */
221 	tda18271_read_regs(fe);
222 
223 	if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
224 	    (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
225 
226 		if ((regs[R_TM] & 0x20) == 0x20)
227 			regs[R_TM] &= ~0x20;
228 		else
229 			regs[R_TM] |= 0x20;
230 
231 		tda18271_write_regs(fe, R_TM, 1);
232 
233 		msleep(10); /* temperature sensing */
234 
235 		/* read thermometer info */
236 		tda18271_read_regs(fe);
237 	}
238 
239 	tm = tda18271_lookup_thermometer(fe);
240 
241 	/* switch thermometer off */
242 	regs[R_TM]   &= ~0x10;
243 	tda18271_write_regs(fe, R_TM, 1);
244 
245 	/* set CAL mode to normal */
246 	regs[R_EP4]  &= ~0x03;
247 	tda18271_write_regs(fe, R_EP4, 1);
248 
249 	return tm;
250 }
251 
252 /* ------------------------------------------------------------------ */
253 
254 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
255 						     u32 freq)
256 {
257 	struct tda18271_priv *priv = fe->tuner_priv;
258 	struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
259 	unsigned char *regs = priv->tda18271_regs;
260 	int i, ret;
261 	u8 tm_current, dc_over_dt, rf_tab;
262 	s32 rfcal_comp, approx;
263 
264 	/* power up */
265 	ret = tda18271_set_standby_mode(fe, 0, 0, 0);
266 	if (tda_fail(ret))
267 		goto fail;
268 
269 	/* read die current temperature */
270 	tm_current = tda18271_read_thermometer(fe);
271 
272 	/* frequency dependent parameters */
273 
274 	tda18271_calc_rf_cal(fe, &freq);
275 	rf_tab = regs[R_EB14];
276 
277 	i = tda18271_lookup_rf_band(fe, &freq, NULL);
278 	if (tda_fail(i))
279 		return i;
280 
281 	if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
282 		approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) +
283 			map[i].rf_b1 + rf_tab;
284 	} else {
285 		approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) +
286 			map[i].rf_b2 + rf_tab;
287 	}
288 
289 	if (approx < 0)
290 		approx = 0;
291 	if (approx > 255)
292 		approx = 255;
293 
294 	tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
295 
296 	/* calculate temperature compensation */
297 	rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000;
298 
299 	regs[R_EB14] = (unsigned char)(approx + rfcal_comp);
300 	ret = tda18271_write_regs(fe, R_EB14, 1);
301 fail:
302 	return ret;
303 }
304 
305 static int tda18271_por(struct dvb_frontend *fe)
306 {
307 	struct tda18271_priv *priv = fe->tuner_priv;
308 	unsigned char *regs = priv->tda18271_regs;
309 	int ret;
310 
311 	/* power up detector 1 */
312 	regs[R_EB12] &= ~0x20;
313 	ret = tda18271_write_regs(fe, R_EB12, 1);
314 	if (tda_fail(ret))
315 		goto fail;
316 
317 	regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
318 	regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
319 	ret = tda18271_write_regs(fe, R_EB18, 1);
320 	if (tda_fail(ret))
321 		goto fail;
322 
323 	regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
324 
325 	/* POR mode */
326 	ret = tda18271_set_standby_mode(fe, 1, 0, 0);
327 	if (tda_fail(ret))
328 		goto fail;
329 
330 	/* disable 1.5 MHz low pass filter */
331 	regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
332 	regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
333 	ret = tda18271_write_regs(fe, R_EB21, 3);
334 fail:
335 	return ret;
336 }
337 
338 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
339 {
340 	struct tda18271_priv *priv = fe->tuner_priv;
341 	unsigned char *regs = priv->tda18271_regs;
342 	u32 N;
343 
344 	/* set CAL mode to normal */
345 	regs[R_EP4]  &= ~0x03;
346 	tda18271_write_regs(fe, R_EP4, 1);
347 
348 	/* switch off agc1 */
349 	regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
350 
351 	regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
352 	tda18271_write_regs(fe, R_EB18, 1);
353 
354 	/* frequency dependent parameters */
355 
356 	tda18271_calc_bp_filter(fe, &freq);
357 	tda18271_calc_gain_taper(fe, &freq);
358 	tda18271_calc_rf_band(fe, &freq);
359 	tda18271_calc_km(fe, &freq);
360 
361 	tda18271_write_regs(fe, R_EP1, 3);
362 	tda18271_write_regs(fe, R_EB13, 1);
363 
364 	/* main pll charge pump source */
365 	tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
366 
367 	/* cal pll charge pump source */
368 	tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
369 
370 	/* force dcdc converter to 0 V */
371 	regs[R_EB14] = 0x00;
372 	tda18271_write_regs(fe, R_EB14, 1);
373 
374 	/* disable plls lock */
375 	regs[R_EB20] &= ~0x20;
376 	tda18271_write_regs(fe, R_EB20, 1);
377 
378 	/* set CAL mode to RF tracking filter calibration */
379 	regs[R_EP4]  |= 0x03;
380 	tda18271_write_regs(fe, R_EP4, 2);
381 
382 	/* --------------------------------------------------------------- */
383 
384 	/* set the internal calibration signal */
385 	N = freq;
386 
387 	tda18271_calc_cal_pll(fe, N);
388 	tda18271_write_regs(fe, R_CPD, 4);
389 
390 	/* downconvert internal calibration */
391 	N += 1000000;
392 
393 	tda18271_calc_main_pll(fe, N);
394 	tda18271_write_regs(fe, R_MPD, 4);
395 
396 	msleep(5);
397 
398 	tda18271_write_regs(fe, R_EP2, 1);
399 	tda18271_write_regs(fe, R_EP1, 1);
400 	tda18271_write_regs(fe, R_EP2, 1);
401 	tda18271_write_regs(fe, R_EP1, 1);
402 
403 	/* --------------------------------------------------------------- */
404 
405 	/* normal operation for the main pll */
406 	tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
407 
408 	/* normal operation for the cal pll  */
409 	tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
410 
411 	msleep(10); /* plls locking */
412 
413 	/* launch the rf tracking filters calibration */
414 	regs[R_EB20]  |= 0x20;
415 	tda18271_write_regs(fe, R_EB20, 1);
416 
417 	msleep(60); /* calibration */
418 
419 	/* --------------------------------------------------------------- */
420 
421 	/* set CAL mode to normal */
422 	regs[R_EP4]  &= ~0x03;
423 
424 	/* switch on agc1 */
425 	regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
426 
427 	regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
428 	tda18271_write_regs(fe, R_EB18, 1);
429 
430 	tda18271_write_regs(fe, R_EP3, 2);
431 
432 	/* synchronization */
433 	tda18271_write_regs(fe, R_EP1, 1);
434 
435 	/* get calibration result */
436 	tda18271_read_extended(fe);
437 
438 	return regs[R_EB14];
439 }
440 
441 static int tda18271_powerscan(struct dvb_frontend *fe,
442 			      u32 *freq_in, u32 *freq_out)
443 {
444 	struct tda18271_priv *priv = fe->tuner_priv;
445 	unsigned char *regs = priv->tda18271_regs;
446 	int sgn, bcal, count, wait, ret;
447 	u8 cid_target;
448 	u16 count_limit;
449 	u32 freq;
450 
451 	freq = *freq_in;
452 
453 	tda18271_calc_rf_band(fe, &freq);
454 	tda18271_calc_rf_cal(fe, &freq);
455 	tda18271_calc_gain_taper(fe, &freq);
456 	tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
457 
458 	tda18271_write_regs(fe, R_EP2, 1);
459 	tda18271_write_regs(fe, R_EB14, 1);
460 
461 	/* downconvert frequency */
462 	freq += 1000000;
463 
464 	tda18271_calc_main_pll(fe, freq);
465 	tda18271_write_regs(fe, R_MPD, 4);
466 
467 	msleep(5); /* pll locking */
468 
469 	/* detection mode */
470 	regs[R_EP4]  &= ~0x03;
471 	regs[R_EP4]  |= 0x01;
472 	tda18271_write_regs(fe, R_EP4, 1);
473 
474 	/* launch power detection measurement */
475 	tda18271_write_regs(fe, R_EP2, 1);
476 
477 	/* read power detection info, stored in EB10 */
478 	ret = tda18271_read_extended(fe);
479 	if (tda_fail(ret))
480 		return ret;
481 
482 	/* algorithm initialization */
483 	sgn = 1;
484 	*freq_out = *freq_in;
485 	bcal = 0;
486 	count = 0;
487 	wait = false;
488 
489 	while ((regs[R_EB10] & 0x3f) < cid_target) {
490 		/* downconvert updated freq to 1 MHz */
491 		freq = *freq_in + (sgn * count) + 1000000;
492 
493 		tda18271_calc_main_pll(fe, freq);
494 		tda18271_write_regs(fe, R_MPD, 4);
495 
496 		if (wait) {
497 			msleep(5); /* pll locking */
498 			wait = false;
499 		} else
500 			udelay(100); /* pll locking */
501 
502 		/* launch power detection measurement */
503 		tda18271_write_regs(fe, R_EP2, 1);
504 
505 		/* read power detection info, stored in EB10 */
506 		ret = tda18271_read_extended(fe);
507 		if (tda_fail(ret))
508 			return ret;
509 
510 		count += 200;
511 
512 		if (count <= count_limit)
513 			continue;
514 
515 		if (sgn <= 0)
516 			break;
517 
518 		sgn = -1 * sgn;
519 		count = 200;
520 		wait = true;
521 	}
522 
523 	if ((regs[R_EB10] & 0x3f) >= cid_target) {
524 		bcal = 1;
525 		*freq_out = freq - 1000000;
526 	} else
527 		bcal = 0;
528 
529 	tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
530 		bcal, *freq_in, *freq_out, freq);
531 
532 	return bcal;
533 }
534 
535 static int tda18271_powerscan_init(struct dvb_frontend *fe)
536 {
537 	struct tda18271_priv *priv = fe->tuner_priv;
538 	unsigned char *regs = priv->tda18271_regs;
539 	int ret;
540 
541 	/* set standard to digital */
542 	regs[R_EP3]  &= ~0x1f; /* clear std bits */
543 	regs[R_EP3]  |= 0x12;
544 
545 	/* set cal mode to normal */
546 	regs[R_EP4]  &= ~0x03;
547 
548 	/* update IF output level */
549 	regs[R_EP4]  &= ~0x1c; /* clear if level bits */
550 
551 	ret = tda18271_write_regs(fe, R_EP3, 2);
552 	if (tda_fail(ret))
553 		goto fail;
554 
555 	regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
556 	ret = tda18271_write_regs(fe, R_EB18, 1);
557 	if (tda_fail(ret))
558 		goto fail;
559 
560 	regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
561 
562 	/* 1.5 MHz low pass filter */
563 	regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
564 	regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
565 
566 	ret = tda18271_write_regs(fe, R_EB21, 3);
567 fail:
568 	return ret;
569 }
570 
571 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
572 {
573 	struct tda18271_priv *priv = fe->tuner_priv;
574 	struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
575 	unsigned char *regs = priv->tda18271_regs;
576 	int bcal, rf, i;
577 	s32 divisor, dividend;
578 #define RF1 0
579 #define RF2 1
580 #define RF3 2
581 	u32 rf_default[3];
582 	u32 rf_freq[3];
583 	s32 prog_cal[3];
584 	s32 prog_tab[3];
585 
586 	i = tda18271_lookup_rf_band(fe, &freq, NULL);
587 
588 	if (tda_fail(i))
589 		return i;
590 
591 	rf_default[RF1] = 1000 * map[i].rf1_def;
592 	rf_default[RF2] = 1000 * map[i].rf2_def;
593 	rf_default[RF3] = 1000 * map[i].rf3_def;
594 
595 	for (rf = RF1; rf <= RF3; rf++) {
596 		if (0 == rf_default[rf])
597 			return 0;
598 		tda_cal("freq = %d, rf = %d\n", freq, rf);
599 
600 		/* look for optimized calibration frequency */
601 		bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
602 		if (tda_fail(bcal))
603 			return bcal;
604 
605 		tda18271_calc_rf_cal(fe, &rf_freq[rf]);
606 		prog_tab[rf] = (s32)regs[R_EB14];
607 
608 		if (1 == bcal)
609 			prog_cal[rf] =
610 				(s32)tda18271_calibrate_rf(fe, rf_freq[rf]);
611 		else
612 			prog_cal[rf] = prog_tab[rf];
613 
614 		switch (rf) {
615 		case RF1:
616 			map[i].rf_a1 = 0;
617 			map[i].rf_b1 = (prog_cal[RF1] - prog_tab[RF1]);
618 			map[i].rf1   = rf_freq[RF1] / 1000;
619 			break;
620 		case RF2:
621 			dividend = (prog_cal[RF2] - prog_tab[RF2] -
622 				    prog_cal[RF1] + prog_tab[RF1]);
623 			divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000;
624 			map[i].rf_a1 = (dividend / divisor);
625 			map[i].rf2   = rf_freq[RF2] / 1000;
626 			break;
627 		case RF3:
628 			dividend = (prog_cal[RF3] - prog_tab[RF3] -
629 				    prog_cal[RF2] + prog_tab[RF2]);
630 			divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000;
631 			map[i].rf_a2 = (dividend / divisor);
632 			map[i].rf_b2 = (prog_cal[RF2] - prog_tab[RF2]);
633 			map[i].rf3   = rf_freq[RF3] / 1000;
634 			break;
635 		default:
636 			BUG();
637 		}
638 	}
639 
640 	return 0;
641 }
642 
643 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
644 {
645 	struct tda18271_priv *priv = fe->tuner_priv;
646 	unsigned int i;
647 	int ret;
648 
649 	tda_info("performing RF tracking filter calibration\n");
650 
651 	/* wait for die temperature stabilization */
652 	msleep(200);
653 
654 	ret = tda18271_powerscan_init(fe);
655 	if (tda_fail(ret))
656 		goto fail;
657 
658 	/* rf band calibration */
659 	for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
660 		ret =
661 		tda18271_rf_tracking_filters_init(fe, 1000 *
662 						  priv->rf_cal_state[i].rfmax);
663 		if (tda_fail(ret))
664 			goto fail;
665 	}
666 
667 	priv->tm_rfcal = tda18271_read_thermometer(fe);
668 fail:
669 	return ret;
670 }
671 
672 /* ------------------------------------------------------------------ */
673 
674 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
675 {
676 	struct tda18271_priv *priv = fe->tuner_priv;
677 	unsigned char *regs = priv->tda18271_regs;
678 	int ret;
679 
680 	/* test RF_CAL_OK to see if we need init */
681 	if ((regs[R_EP1] & 0x10) == 0)
682 		priv->cal_initialized = false;
683 
684 	if (priv->cal_initialized)
685 		return 0;
686 
687 	ret = tda18271_calc_rf_filter_curve(fe);
688 	if (tda_fail(ret))
689 		goto fail;
690 
691 	ret = tda18271_por(fe);
692 	if (tda_fail(ret))
693 		goto fail;
694 
695 	tda_info("RF tracking filter calibration complete\n");
696 
697 	priv->cal_initialized = true;
698 	goto end;
699 fail:
700 	tda_info("RF tracking filter calibration failed!\n");
701 end:
702 	return ret;
703 }
704 
705 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
706 						     u32 freq, u32 bw)
707 {
708 	struct tda18271_priv *priv = fe->tuner_priv;
709 	unsigned char *regs = priv->tda18271_regs;
710 	int ret;
711 	u32 N = 0;
712 
713 	/* calculate bp filter */
714 	tda18271_calc_bp_filter(fe, &freq);
715 	tda18271_write_regs(fe, R_EP1, 1);
716 
717 	regs[R_EB4]  &= 0x07;
718 	regs[R_EB4]  |= 0x60;
719 	tda18271_write_regs(fe, R_EB4, 1);
720 
721 	regs[R_EB7]   = 0x60;
722 	tda18271_write_regs(fe, R_EB7, 1);
723 
724 	regs[R_EB14]  = 0x00;
725 	tda18271_write_regs(fe, R_EB14, 1);
726 
727 	regs[R_EB20]  = 0xcc;
728 	tda18271_write_regs(fe, R_EB20, 1);
729 
730 	/* set cal mode to RF tracking filter calibration */
731 	regs[R_EP4]  |= 0x03;
732 
733 	/* calculate cal pll */
734 
735 	switch (priv->mode) {
736 	case TDA18271_ANALOG:
737 		N = freq - 1250000;
738 		break;
739 	case TDA18271_DIGITAL:
740 		N = freq + bw / 2;
741 		break;
742 	}
743 
744 	tda18271_calc_cal_pll(fe, N);
745 
746 	/* calculate main pll */
747 
748 	switch (priv->mode) {
749 	case TDA18271_ANALOG:
750 		N = freq - 250000;
751 		break;
752 	case TDA18271_DIGITAL:
753 		N = freq + bw / 2 + 1000000;
754 		break;
755 	}
756 
757 	tda18271_calc_main_pll(fe, N);
758 
759 	ret = tda18271_write_regs(fe, R_EP3, 11);
760 	if (tda_fail(ret))
761 		return ret;
762 
763 	msleep(5); /* RF tracking filter calibration initialization */
764 
765 	/* search for K,M,CO for RF calibration */
766 	tda18271_calc_km(fe, &freq);
767 	tda18271_write_regs(fe, R_EB13, 1);
768 
769 	/* search for rf band */
770 	tda18271_calc_rf_band(fe, &freq);
771 
772 	/* search for gain taper */
773 	tda18271_calc_gain_taper(fe, &freq);
774 
775 	tda18271_write_regs(fe, R_EP2, 1);
776 	tda18271_write_regs(fe, R_EP1, 1);
777 	tda18271_write_regs(fe, R_EP2, 1);
778 	tda18271_write_regs(fe, R_EP1, 1);
779 
780 	regs[R_EB4]  &= 0x07;
781 	regs[R_EB4]  |= 0x40;
782 	tda18271_write_regs(fe, R_EB4, 1);
783 
784 	regs[R_EB7]   = 0x40;
785 	tda18271_write_regs(fe, R_EB7, 1);
786 	msleep(10); /* pll locking */
787 
788 	regs[R_EB20]  = 0xec;
789 	tda18271_write_regs(fe, R_EB20, 1);
790 	msleep(60); /* RF tracking filter calibration completion */
791 
792 	regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
793 	tda18271_write_regs(fe, R_EP4, 1);
794 
795 	tda18271_write_regs(fe, R_EP1, 1);
796 
797 	/* RF tracking filter correction for VHF_Low band */
798 	if (0 == tda18271_calc_rf_cal(fe, &freq))
799 		tda18271_write_regs(fe, R_EB14, 1);
800 
801 	return 0;
802 }
803 
804 /* ------------------------------------------------------------------ */
805 
806 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
807 {
808 	struct tda18271_priv *priv = fe->tuner_priv;
809 	unsigned char *regs = priv->tda18271_regs;
810 	int ret;
811 
812 	ret = tda18271_read_regs(fe);
813 	if (tda_fail(ret))
814 		goto fail;
815 
816 	/* test IR_CAL_OK to see if we need init */
817 	if ((regs[R_EP1] & 0x08) == 0)
818 		ret = tda18271_init_regs(fe);
819 fail:
820 	return ret;
821 }
822 
823 static int tda18271_init(struct dvb_frontend *fe)
824 {
825 	struct tda18271_priv *priv = fe->tuner_priv;
826 	int ret;
827 
828 	mutex_lock(&priv->lock);
829 
830 	/* full power up */
831 	ret = tda18271_set_standby_mode(fe, 0, 0, 0);
832 	if (tda_fail(ret))
833 		goto fail;
834 
835 	/* initialization */
836 	ret = tda18271_ir_cal_init(fe);
837 	if (tda_fail(ret))
838 		goto fail;
839 
840 	if (priv->id == TDA18271HDC2)
841 		tda18271c2_rf_cal_init(fe);
842 fail:
843 	mutex_unlock(&priv->lock);
844 
845 	return ret;
846 }
847 
848 static int tda18271_sleep(struct dvb_frontend *fe)
849 {
850 	struct tda18271_priv *priv = fe->tuner_priv;
851 	int ret;
852 
853 	mutex_lock(&priv->lock);
854 
855 	/* enter standby mode, with required output features enabled */
856 	ret = tda18271_toggle_output(fe, 1);
857 
858 	mutex_unlock(&priv->lock);
859 
860 	return ret;
861 }
862 
863 /* ------------------------------------------------------------------ */
864 
865 static int tda18271_agc(struct dvb_frontend *fe)
866 {
867 	struct tda18271_priv *priv = fe->tuner_priv;
868 	int ret = 0;
869 
870 	switch (priv->config) {
871 	case TDA8290_LNA_OFF:
872 		/* no external agc configuration required */
873 		if (tda18271_debug & DBG_ADV)
874 			tda_dbg("no agc configuration provided\n");
875 		break;
876 	case TDA8290_LNA_ON_BRIDGE:
877 		/* switch with GPIO of saa713x */
878 		tda_dbg("invoking callback\n");
879 		if (fe->callback)
880 			ret = fe->callback(priv->i2c_props.adap->algo_data,
881 					   DVB_FRONTEND_COMPONENT_TUNER,
882 					   TDA18271_CALLBACK_CMD_AGC_ENABLE,
883 					   priv->mode);
884 		break;
885 	case TDA8290_LNA_GP0_HIGH_ON:
886 	case TDA8290_LNA_GP0_HIGH_OFF:
887 	default:
888 		/* n/a - currently not supported */
889 		tda_err("unsupported configuration: %d\n", priv->config);
890 		ret = -EINVAL;
891 		break;
892 	}
893 	return ret;
894 }
895 
896 static int tda18271_tune(struct dvb_frontend *fe,
897 			 struct tda18271_std_map_item *map, u32 freq, u32 bw)
898 {
899 	struct tda18271_priv *priv = fe->tuner_priv;
900 	int ret;
901 
902 	tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
903 		freq, map->if_freq, bw, map->agc_mode, map->std);
904 
905 	ret = tda18271_agc(fe);
906 	if (tda_fail(ret))
907 		tda_warn("failed to configure agc\n");
908 
909 	ret = tda18271_init(fe);
910 	if (tda_fail(ret))
911 		goto fail;
912 
913 	mutex_lock(&priv->lock);
914 
915 	switch (priv->id) {
916 	case TDA18271HDC1:
917 		tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
918 		break;
919 	case TDA18271HDC2:
920 		tda18271c2_rf_tracking_filters_correction(fe, freq);
921 		break;
922 	}
923 	ret = tda18271_channel_configuration(fe, map, freq, bw);
924 
925 	mutex_unlock(&priv->lock);
926 fail:
927 	return ret;
928 }
929 
930 /* ------------------------------------------------------------------ */
931 
932 static int tda18271_set_params(struct dvb_frontend *fe)
933 {
934 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
935 	u32 delsys = c->delivery_system;
936 	u32 bw = c->bandwidth_hz;
937 	u32 freq = c->frequency;
938 	struct tda18271_priv *priv = fe->tuner_priv;
939 	struct tda18271_std_map *std_map = &priv->std;
940 	struct tda18271_std_map_item *map;
941 	int ret;
942 
943 	priv->mode = TDA18271_DIGITAL;
944 
945 	switch (delsys) {
946 	case SYS_ATSC:
947 		map = &std_map->atsc_6;
948 		bw = 6000000;
949 		break;
950 	case SYS_ISDBT:
951 	case SYS_DVBT:
952 	case SYS_DVBT2:
953 		if (bw <= 6000000) {
954 			map = &std_map->dvbt_6;
955 		} else if (bw <= 7000000) {
956 			map = &std_map->dvbt_7;
957 		} else {
958 			map = &std_map->dvbt_8;
959 		}
960 		break;
961 	case SYS_DVBC_ANNEX_B:
962 		bw = 6000000;
963 		/* fall through */
964 	case SYS_DVBC_ANNEX_A:
965 	case SYS_DVBC_ANNEX_C:
966 		if (bw <= 6000000) {
967 			map = &std_map->qam_6;
968 		} else if (bw <= 7000000) {
969 			map = &std_map->qam_7;
970 		} else {
971 			map = &std_map->qam_8;
972 		}
973 		break;
974 	default:
975 		tda_warn("modulation type not supported!\n");
976 		return -EINVAL;
977 	}
978 
979 	/* When tuning digital, the analog demod must be tri-stated */
980 	if (fe->ops.analog_ops.standby)
981 		fe->ops.analog_ops.standby(fe);
982 
983 	ret = tda18271_tune(fe, map, freq, bw);
984 
985 	if (tda_fail(ret))
986 		goto fail;
987 
988 	priv->if_freq   = map->if_freq;
989 	priv->frequency = freq;
990 	priv->bandwidth = bw;
991 fail:
992 	return ret;
993 }
994 
995 static int tda18271_set_analog_params(struct dvb_frontend *fe,
996 				      struct analog_parameters *params)
997 {
998 	struct tda18271_priv *priv = fe->tuner_priv;
999 	struct tda18271_std_map *std_map = &priv->std;
1000 	struct tda18271_std_map_item *map;
1001 	char *mode;
1002 	int ret;
1003 	u32 freq = params->frequency * 125 *
1004 		((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2;
1005 
1006 	priv->mode = TDA18271_ANALOG;
1007 
1008 	if (params->mode == V4L2_TUNER_RADIO) {
1009 		map = &std_map->fm_radio;
1010 		mode = "fm";
1011 	} else if (params->std & V4L2_STD_MN) {
1012 		map = &std_map->atv_mn;
1013 		mode = "MN";
1014 	} else if (params->std & V4L2_STD_B) {
1015 		map = &std_map->atv_b;
1016 		mode = "B";
1017 	} else if (params->std & V4L2_STD_GH) {
1018 		map = &std_map->atv_gh;
1019 		mode = "GH";
1020 	} else if (params->std & V4L2_STD_PAL_I) {
1021 		map = &std_map->atv_i;
1022 		mode = "I";
1023 	} else if (params->std & V4L2_STD_DK) {
1024 		map = &std_map->atv_dk;
1025 		mode = "DK";
1026 	} else if (params->std & V4L2_STD_SECAM_L) {
1027 		map = &std_map->atv_l;
1028 		mode = "L";
1029 	} else if (params->std & V4L2_STD_SECAM_LC) {
1030 		map = &std_map->atv_lc;
1031 		mode = "L'";
1032 	} else {
1033 		map = &std_map->atv_i;
1034 		mode = "xx";
1035 	}
1036 
1037 	tda_dbg("setting tda18271 to system %s\n", mode);
1038 
1039 	ret = tda18271_tune(fe, map, freq, 0);
1040 
1041 	if (tda_fail(ret))
1042 		goto fail;
1043 
1044 	priv->if_freq   = map->if_freq;
1045 	priv->frequency = freq;
1046 	priv->bandwidth = 0;
1047 fail:
1048 	return ret;
1049 }
1050 
1051 static void tda18271_release(struct dvb_frontend *fe)
1052 {
1053 	struct tda18271_priv *priv = fe->tuner_priv;
1054 
1055 	mutex_lock(&tda18271_list_mutex);
1056 
1057 	if (priv)
1058 		hybrid_tuner_release_state(priv);
1059 
1060 	mutex_unlock(&tda18271_list_mutex);
1061 
1062 	fe->tuner_priv = NULL;
1063 }
1064 
1065 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1066 {
1067 	struct tda18271_priv *priv = fe->tuner_priv;
1068 	*frequency = priv->frequency;
1069 	return 0;
1070 }
1071 
1072 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1073 {
1074 	struct tda18271_priv *priv = fe->tuner_priv;
1075 	*bandwidth = priv->bandwidth;
1076 	return 0;
1077 }
1078 
1079 static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
1080 {
1081 	struct tda18271_priv *priv = fe->tuner_priv;
1082 	*frequency = (u32)priv->if_freq * 1000;
1083 	return 0;
1084 }
1085 
1086 /* ------------------------------------------------------------------ */
1087 
1088 #define tda18271_update_std(std_cfg, name) do {				\
1089 	if (map->std_cfg.if_freq +					\
1090 		map->std_cfg.agc_mode + map->std_cfg.std +		\
1091 		map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) {	\
1092 		tda_dbg("Using custom std config for %s\n", name);	\
1093 		memcpy(&std->std_cfg, &map->std_cfg,			\
1094 			sizeof(struct tda18271_std_map_item));		\
1095 	} } while (0)
1096 
1097 #define tda18271_dump_std_item(std_cfg, name) do {			\
1098 	tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, "		\
1099 		"if_lvl = %d, rfagc_top = 0x%02x\n",			\
1100 		name, std->std_cfg.if_freq,				\
1101 		std->std_cfg.agc_mode, std->std_cfg.std,		\
1102 		std->std_cfg.if_lvl, std->std_cfg.rfagc_top);		\
1103 	} while (0)
1104 
1105 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1106 {
1107 	struct tda18271_priv *priv = fe->tuner_priv;
1108 	struct tda18271_std_map *std = &priv->std;
1109 
1110 	tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1111 	tda18271_dump_std_item(fm_radio, "  fm  ");
1112 	tda18271_dump_std_item(atv_b,  "atv b ");
1113 	tda18271_dump_std_item(atv_dk, "atv dk");
1114 	tda18271_dump_std_item(atv_gh, "atv gh");
1115 	tda18271_dump_std_item(atv_i,  "atv i ");
1116 	tda18271_dump_std_item(atv_l,  "atv l ");
1117 	tda18271_dump_std_item(atv_lc, "atv l'");
1118 	tda18271_dump_std_item(atv_mn, "atv mn");
1119 	tda18271_dump_std_item(atsc_6, "atsc 6");
1120 	tda18271_dump_std_item(dvbt_6, "dvbt 6");
1121 	tda18271_dump_std_item(dvbt_7, "dvbt 7");
1122 	tda18271_dump_std_item(dvbt_8, "dvbt 8");
1123 	tda18271_dump_std_item(qam_6,  "qam 6 ");
1124 	tda18271_dump_std_item(qam_7,  "qam 7 ");
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_7,  "qam 7");
1153 	tda18271_update_std(qam_8,  "qam 8");
1154 
1155 	return 0;
1156 }
1157 
1158 static int tda18271_get_id(struct dvb_frontend *fe)
1159 {
1160 	struct tda18271_priv *priv = fe->tuner_priv;
1161 	unsigned char *regs = priv->tda18271_regs;
1162 	char *name;
1163 	int ret;
1164 
1165 	mutex_lock(&priv->lock);
1166 	ret = tda18271_read_regs(fe);
1167 	mutex_unlock(&priv->lock);
1168 
1169 	if (ret) {
1170 		tda_info("Error reading device ID @ %d-%04x, bailing out.\n",
1171 			 i2c_adapter_id(priv->i2c_props.adap),
1172 			 priv->i2c_props.addr);
1173 		return -EIO;
1174 	}
1175 
1176 	switch (regs[R_ID] & 0x7f) {
1177 	case 3:
1178 		name = "TDA18271HD/C1";
1179 		priv->id = TDA18271HDC1;
1180 		break;
1181 	case 4:
1182 		name = "TDA18271HD/C2";
1183 		priv->id = TDA18271HDC2;
1184 		break;
1185 	default:
1186 		tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n",
1187 			 regs[R_ID], i2c_adapter_id(priv->i2c_props.adap),
1188 			 priv->i2c_props.addr);
1189 		return -EINVAL;
1190 	}
1191 
1192 	tda_info("%s detected @ %d-%04x\n", name,
1193 		 i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr);
1194 
1195 	return 0;
1196 }
1197 
1198 static int tda18271_setup_configuration(struct dvb_frontend *fe,
1199 					struct tda18271_config *cfg)
1200 {
1201 	struct tda18271_priv *priv = fe->tuner_priv;
1202 
1203 	priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1204 	priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1205 	priv->config = (cfg) ? cfg->config : 0;
1206 	priv->small_i2c = (cfg) ?
1207 		cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT;
1208 	priv->output_opt = (cfg) ?
1209 		cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON;
1210 
1211 	return 0;
1212 }
1213 
1214 static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg)
1215 {
1216 	/* tda18271_cal_on_startup == -1 when cal module option is unset */
1217 	return ((tda18271_cal_on_startup == -1) ?
1218 		/* honor configuration setting */
1219 		((cfg) && (cfg->rf_cal_on_startup)) :
1220 		/* module option overrides configuration setting */
1221 		(tda18271_cal_on_startup)) ? 1 : 0;
1222 }
1223 
1224 static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg)
1225 {
1226 	struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg;
1227 
1228 	tda18271_setup_configuration(fe, cfg);
1229 
1230 	if (tda18271_need_cal_on_startup(cfg))
1231 		tda18271_init(fe);
1232 
1233 	/* override default std map with values in config struct */
1234 	if ((cfg) && (cfg->std_map))
1235 		tda18271_update_std_map(fe, cfg->std_map);
1236 
1237 	return 0;
1238 }
1239 
1240 static const struct dvb_tuner_ops tda18271_tuner_ops = {
1241 	.info = {
1242 		.name = "NXP TDA18271HD",
1243 		.frequency_min_hz  =  45 * MHz,
1244 		.frequency_max_hz  = 864 * MHz,
1245 		.frequency_step_hz = 62500
1246 	},
1247 	.init              = tda18271_init,
1248 	.sleep             = tda18271_sleep,
1249 	.set_params        = tda18271_set_params,
1250 	.set_analog_params = tda18271_set_analog_params,
1251 	.release           = tda18271_release,
1252 	.set_config        = tda18271_set_config,
1253 	.get_frequency     = tda18271_get_frequency,
1254 	.get_bandwidth     = tda18271_get_bandwidth,
1255 	.get_if_frequency  = tda18271_get_if_frequency,
1256 };
1257 
1258 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1259 				     struct i2c_adapter *i2c,
1260 				     struct tda18271_config *cfg)
1261 {
1262 	struct tda18271_priv *priv = NULL;
1263 	int instance, ret;
1264 
1265 	mutex_lock(&tda18271_list_mutex);
1266 
1267 	instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1268 					      hybrid_tuner_instance_list,
1269 					      i2c, addr, "tda18271");
1270 	switch (instance) {
1271 	case 0:
1272 		goto fail;
1273 	case 1:
1274 		/* new tuner instance */
1275 		fe->tuner_priv = priv;
1276 
1277 		tda18271_setup_configuration(fe, cfg);
1278 
1279 		priv->cal_initialized = false;
1280 		mutex_init(&priv->lock);
1281 
1282 		ret = tda18271_get_id(fe);
1283 		if (tda_fail(ret))
1284 			goto fail;
1285 
1286 		ret = tda18271_assign_map_layout(fe);
1287 		if (tda_fail(ret))
1288 			goto fail;
1289 
1290 		/* if delay_cal is set, delay IR & RF calibration until init()
1291 		 * module option 'cal' overrides this delay */
1292 		if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg)))
1293 			break;
1294 
1295 		mutex_lock(&priv->lock);
1296 		tda18271_init_regs(fe);
1297 
1298 		if ((tda18271_need_cal_on_startup(cfg)) &&
1299 		    (priv->id == TDA18271HDC2))
1300 			tda18271c2_rf_cal_init(fe);
1301 
1302 		/* enter standby mode, with required output features enabled */
1303 		ret = tda18271_toggle_output(fe, 1);
1304 		tda_fail(ret);
1305 
1306 		mutex_unlock(&priv->lock);
1307 		break;
1308 	default:
1309 		/* existing tuner instance */
1310 		fe->tuner_priv = priv;
1311 
1312 		/* allow dvb driver to override configuration settings */
1313 		if (cfg) {
1314 			if (cfg->gate != TDA18271_GATE_ANALOG)
1315 				priv->gate = cfg->gate;
1316 			if (cfg->role)
1317 				priv->role = cfg->role;
1318 			if (cfg->config)
1319 				priv->config = cfg->config;
1320 			if (cfg->small_i2c)
1321 				priv->small_i2c = cfg->small_i2c;
1322 			if (cfg->output_opt)
1323 				priv->output_opt = cfg->output_opt;
1324 			if (cfg->std_map)
1325 				tda18271_update_std_map(fe, cfg->std_map);
1326 		}
1327 		if (tda18271_need_cal_on_startup(cfg))
1328 			tda18271_init(fe);
1329 		break;
1330 	}
1331 
1332 	/* override default std map with values in config struct */
1333 	if ((cfg) && (cfg->std_map))
1334 		tda18271_update_std_map(fe, cfg->std_map);
1335 
1336 	mutex_unlock(&tda18271_list_mutex);
1337 
1338 	memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1339 	       sizeof(struct dvb_tuner_ops));
1340 
1341 	if (tda18271_debug & (DBG_MAP | DBG_ADV))
1342 		tda18271_dump_std_map(fe);
1343 
1344 	return fe;
1345 fail:
1346 	mutex_unlock(&tda18271_list_mutex);
1347 
1348 	tda18271_release(fe);
1349 	return NULL;
1350 }
1351 EXPORT_SYMBOL_GPL(tda18271_attach);
1352 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1353 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1354 MODULE_LICENSE("GPL");
1355 MODULE_VERSION("0.4");
1356