summaryrefslogtreecommitdiffstats
path: root/drivers/media/common/tuners/tda18271-common.c
blob: aae40e52af5b1f3edf36c11154b6d04e41fd8273 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
/*
    tda18271-common.c - driver for the Philips / NXP TDA18271 silicon tuner

    Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "tda18271-priv.h"

static int tda18271_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	enum tda18271_i2c_gate gate;
	int ret = 0;

	switch (priv->gate) {
	case TDA18271_GATE_DIGITAL:
	case TDA18271_GATE_ANALOG:
		gate = priv->gate;
		break;
	case TDA18271_GATE_AUTO:
	default:
		switch (priv->mode) {
		case TDA18271_DIGITAL:
			gate = TDA18271_GATE_DIGITAL;
			break;
		case TDA18271_ANALOG:
		default:
			gate = TDA18271_GATE_ANALOG;
			break;
		}
	}

	switch (gate) {
	case TDA18271_GATE_ANALOG:
		if (fe->ops.analog_ops.i2c_gate_ctrl)
			ret = fe->ops.analog_ops.i2c_gate_ctrl(fe, enable);
		break;
	case TDA18271_GATE_DIGITAL:
		if (fe->ops.i2c_gate_ctrl)
			ret = fe->ops.i2c_gate_ctrl(fe, enable);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
};

/*---------------------------------------------------------------------*/

static void tda18271_dump_regs(struct dvb_frontend *fe, int extended)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;

	tda_reg("=== TDA18271 REG DUMP ===\n");
	tda_reg("ID_BYTE            = 0x%02x\n", 0xff & regs[R_ID]);
	tda_reg("THERMO_BYTE        = 0x%02x\n", 0xff & regs[R_TM]);
	tda_reg("POWER_LEVEL_BYTE   = 0x%02x\n", 0xff & regs[R_PL]);
	tda_reg("EASY_PROG_BYTE_1   = 0x%02x\n", 0xff & regs[R_EP1]);
	tda_reg("EASY_PROG_BYTE_2   = 0x%02x\n", 0xff & regs[R_EP2]);
	tda_reg("EASY_PROG_BYTE_3   = 0x%02x\n", 0xff & regs[R_EP3]);
	tda_reg("EASY_PROG_BYTE_4   = 0x%02x\n", 0xff & regs[R_EP4]);
	tda_reg("EASY_PROG_BYTE_5   = 0x%02x\n", 0xff & regs[R_EP5]);
	tda_reg("CAL_POST_DIV_BYTE  = 0x%02x\n", 0xff & regs[R_CPD]);
	tda_reg("CAL_DIV_BYTE_1     = 0x%02x\n", 0xff & regs[R_CD1]);
	tda_reg("CAL_DIV_BYTE_2     = 0x%02x\n", 0xff & regs[R_CD2]);
	tda_reg("CAL_DIV_BYTE_3     = 0x%02x\n", 0xff & regs[R_CD3]);
	tda_reg("MAIN_POST_DIV_BYTE = 0x%02x\n", 0xff & regs[R_MPD]);
	tda_reg("MAIN_DIV_BYTE_1    = 0x%02x\n", 0xff & regs[R_MD1]);
	tda_reg("MAIN_DIV_BYTE_2    = 0x%02x\n", 0xff & regs[R_MD2]);
	tda_reg("MAIN_DIV_BYTE_3    = 0x%02x\n", 0xff & regs[R_MD3]);

	/* only dump extended regs if DBG_ADV is set */
	if (!(tda18271_debug & DBG_ADV))
		return;

	/* W indicates write-only registers.
	 * Register dump for write-only registers shows last value written. */

	tda_reg("EXTENDED_BYTE_1    = 0x%02x\n", 0xff & regs[R_EB1]);
	tda_reg("EXTENDED_BYTE_2    = 0x%02x\n", 0xff & regs[R_EB2]);
	tda_reg("EXTENDED_BYTE_3    = 0x%02x\n", 0xff & regs[R_EB3]);
	tda_reg("EXTENDED_BYTE_4    = 0x%02x\n", 0xff & regs[R_EB4]);
	tda_reg("EXTENDED_BYTE_5    = 0x%02x\n", 0xff & regs[R_EB5]);
	tda_reg("EXTENDED_BYTE_6    = 0x%02x\n", 0xff & regs[R_EB6]);
	tda_reg("EXTENDED_BYTE_7    = 0x%02x\n", 0xff & regs[R_EB7]);
	tda_reg("EXTENDED_BYTE_8    = 0x%02x\n", 0xff & regs[R_EB8]);
	tda_reg("EXTENDED_BYTE_9  W = 0x%02x\n", 0xff & regs[R_EB9]);
	tda_reg("EXTENDED_BYTE_10   = 0x%02x\n", 0xff & regs[R_EB10]);
	tda_reg("EXTENDED_BYTE_11   = 0x%02x\n", 0xff & regs[R_EB11]);
	tda_reg("EXTENDED_BYTE_12   = 0x%02x\n", 0xff & regs[R_EB12]);
	tda_reg("EXTENDED_BYTE_13   = 0x%02x\n", 0xff & regs[R_EB13]);
	tda_reg("EXTENDED_BYTE_14   = 0x%02x\n", 0xff & regs[R_EB14]);
	tda_reg("EXTENDED_BYTE_15   = 0x%02x\n", 0xff & regs[R_EB15]);
	tda_reg("EXTENDED_BYTE_16 W = 0x%02x\n", 0xff & regs[R_EB16]);
	tda_reg("EXTENDED_BYTE_17 W = 0x%02x\n", 0xff & regs[R_EB17]);
	tda_reg("EXTENDED_BYTE_18   = 0x%02x\n", 0xff & regs[R_EB18]);
	tda_reg("EXTENDED_BYTE_19 W = 0x%02x\n", 0xff & regs[R_EB19]);
	tda_reg("EXTENDED_BYTE_20 W = 0x%02x\n", 0xff & regs[R_EB20]);
	tda_reg("EXTENDED_BYTE_21   = 0x%02x\n", 0xff & regs[R_EB21]);
	tda_reg("EXTENDED_BYTE_22   = 0x%02x\n", 0xff & regs[R_EB22]);
	tda_reg("EXTENDED_BYTE_23   = 0x%02x\n", 0xff & regs[R_EB23]);
}

int tda18271_read_regs(struct dvb_frontend *fe)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	unsigned char buf = 0x00;
	int ret;
	struct i2c_msg msg[] = {
		{ .addr = priv->i2c_props.addr, .flags = 0,
		  .buf = &buf, .len = 1 },
		{ .addr = priv->i2c_props.addr, .flags = I2C_M_RD,
		  .buf = regs, .len = 16 }
	};

	tda18271_i2c_gate_ctrl(fe, 1);

	/* read all registers */
	ret = i2c_transfer(priv->i2c_props.adap, msg, 2);

	tda18271_i2c_gate_ctrl(fe, 0);

	if (ret != 2)
		tda_err("ERROR: i2c_transfer returned: %d\n", ret);

	if (tda18271_debug & DBG_REG)
		tda18271_dump_regs(fe, 0);

	return (ret == 2 ? 0 : ret);
}

int tda18271_read_extended(struct dvb_frontend *fe)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	unsigned char regdump[TDA18271_NUM_REGS];
	unsigned char buf = 0x00;
	int ret, i;
	struct i2c_msg msg[] = {
		{ .addr = priv->i2c_props.addr, .flags = 0,
		  .buf = &buf, .len = 1 },
		{ .addr = priv->i2c_props.addr, .flags = I2C_M_RD,
		  .buf = regdump, .len = TDA18271_NUM_REGS }
	};

	tda18271_i2c_gate_ctrl(fe, 1);

	/* read all registers */
	ret = i2c_transfer(priv->i2c_props.adap, msg, 2);

	tda18271_i2c_gate_ctrl(fe, 0);

	if (ret != 2)
		tda_err("ERROR: i2c_transfer returned: %d\n", ret);

	for (i = 0; i < TDA18271_NUM_REGS; i++) {
		/* don't update write-only registers */
		if ((i != R_EB9)  &&
		    (i != R_EB16) &&
		    (i != R_EB17) &&
		    (i != R_EB19) &&
		    (i != R_EB20))
		regs[i] = regdump[i];
	}

	if (tda18271_debug & DBG_REG)
		tda18271_dump_regs(fe, 1);

	return (ret == 2 ? 0 : ret);
}

int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	unsigned char buf[TDA18271_NUM_REGS + 1];
	struct i2c_msg msg = { .addr = priv->i2c_props.addr, .flags = 0,
			       .buf = buf };
	int i, ret = 1, max;

	BUG_ON((len == 0) || (idx + len > sizeof(buf)));


	switch (priv->small_i2c) {
	case TDA18271_03_BYTE_CHUNK_INIT:
		max = 3;
		break;
	case TDA18271_08_BYTE_CHUNK_INIT:
		max = 8;
		break;
	case TDA18271_16_BYTE_CHUNK_INIT:
		max = 16;
		break;
	case TDA18271_39_BYTE_CHUNK_INIT:
	default:
		max = 39;
	}

	tda18271_i2c_gate_ctrl(fe, 1);
	while (len) {
		if (max > len)
			max = len;

		buf[0] = idx;
		for (i = 1; i <= max; i++)
			buf[i] = regs[idx - 1 + i];

		msg.len = max + 1;

		/* write registers */
		ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
		if (ret != 1)
			break;

		idx += max;
		len -= max;
	}
	tda18271_i2c_gate_ctrl(fe, 0);

	if (ret != 1)
		tda_err("ERROR: idx = 0x%x, len = %d, "
			"i2c_transfer returned: %d\n", idx, max, ret);

	return (ret == 1 ? 0 : ret);
}

/*---------------------------------------------------------------------*/

int tda18271_charge_pump_source(struct dvb_frontend *fe,
				enum tda18271_pll pll, int force)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;

	int r_cp = (pll == TDA18271_CAL_PLL) ? R_EB7 : R_EB4;

	regs[r_cp] &= ~0x20;
	regs[r_cp] |= ((force & 1) << 5);

	return tda18271_write_regs(fe, r_cp, 1);
}

int tda18271_init_regs(struct dvb_frontend *fe)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;

	tda_dbg("initializing registers for device @ %d-%04x\n",
		i2c_adapter_id(priv->i2c_props.adap),
		priv->i2c_props.addr);

	/* initialize registers */
	switch (priv->id) {
	case TDA18271HDC1:
		regs[R_ID]   = 0x83;
		break;
	case TDA18271HDC2:
		regs[R_ID]   = 0x84;
		break;
	};

	regs[R_TM]   = 0x08;
	regs[R_PL]   = 0x80;
	regs[R_EP1]  = 0xc6;
	regs[R_EP2]  = 0xdf;
	regs[R_EP3]  = 0x16;
	regs[R_EP4]  = 0x60;
	regs[R_EP5]  = 0x80;
	regs[R_CPD]  = 0x80;
	regs[R_CD1]  = 0x00;
	regs[R_CD2]  = 0x00;
	regs[R_CD3]  = 0x00;
	regs[R_MPD]  = 0x00;
	regs[R_MD1]  = 0x00;
	regs[R_MD2]  = 0x00;
	regs[R_MD3]  = 0x00;

	switch (priv->id) {
	case TDA18271HDC1:
		regs[R_EB1]  = 0xff;
		break;
	case TDA18271HDC2:
		regs[R_EB1]  = 0xfc;
		break;
	};

	regs[R_EB2]  = 0x01;
	regs[R_EB3]  = 0x84;
	regs[R_EB4]  = 0x41;
	regs[R_EB5]  = 0x01;
	regs[R_EB6]  = 0x84;
	regs[R_EB7]  = 0x40;
	regs[R_EB8]  = 0x07;
	regs[R_EB9]  = 0x00;
	regs[R_EB10] = 0x00;
	regs[R_EB11] = 0x96;

	switch (priv->id) {
	case TDA18271HDC1:
		regs[R_EB12] = 0x0f;
		break;
	case TDA18271HDC2:
		regs[R_EB12] = 0x33;
		break;
	};

	regs[R_EB13] = 0xc1;
	regs[R_EB14] = 0x00;
	regs[R_EB15] = 0x8f;
	regs[R_EB16] = 0x00;
	regs[R_EB17] = 0x00;

	switch (priv->id) {
	case TDA18271HDC1:
		regs[R_EB18] = 0x00;
		break;
	case TDA18271HDC2:
		regs[R_EB18] = 0x8c;
		break;
	};

	regs[R_EB19] = 0x00;
	regs[R_EB20] = 0x20;

	switch (priv->id) {
	case TDA18271HDC1:
		regs[R_EB21] = 0x33;
		break;
	case TDA18271HDC2:
		regs[R_EB21] = 0xb3;
		break;
	};

	regs[R_EB22] = 0x48;
	regs[R_EB23] = 0xb0;

	tda18271_write_regs(fe, 0x00, TDA18271_NUM_REGS);

	/* setup agc1 gain */
	regs[R_EB17] = 0x00;
	tda18271_write_regs(fe, R_EB17, 1);
	regs[R_EB17] = 0x03;
	tda18271_write_regs(fe, R_EB17, 1);
	regs[R_EB17] = 0x43;
	tda18271_write_regs(fe, R_EB17, 1);
	regs[R_EB17] = 0x4c;
	tda18271_write_regs(fe, R_EB17, 1);

	/* setup agc2 gain */
	if ((priv->id) == TDA18271HDC1) {
		regs[R_EB20] = 0xa0;
		tda18271_write_regs(fe, R_EB20, 1);
		regs[R_EB20] = 0xa7;
		tda18271_write_regs(fe, R_EB20, 1);
		regs[R_EB20] = 0xe7;
		tda18271_write_regs(fe, R_EB20, 1);
		regs[R_EB20] = 0xec;
		tda18271_write_regs(fe, R_EB20, 1);
	}

	/* image rejection calibration */

	/* low-band */
	regs[R_EP3] = 0x1f;
	regs[R_EP4] = 0x66;
	regs[R_EP5] = 0x81;
	regs[R_CPD] = 0xcc;
	regs[R_CD1] = 0x6c;
	regs[R_CD2] = 0x00;
	regs[R_CD3] = 0x00;
	regs[R_MPD] = 0xcd;
	regs[R_MD1] = 0x77;
	regs[R_MD2] = 0x08;
	regs[R_MD3] = 0x00;

	tda18271_write_regs(fe, R_EP3, 11);

	if ((priv->id) == TDA18271HDC2) {
		/* main pll cp source on */
		tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
		msleep(1);

		/* main pll cp source off */
		tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
	}

	msleep(5); /* pll locking */

	/* launch detector */
	tda18271_write_regs(fe, R_EP1, 1);
	msleep(5); /* wanted low measurement */

	regs[R_EP5] = 0x85;
	regs[R_CPD] = 0xcb;
	regs[R_CD1] = 0x66;
	regs[R_CD2] = 0x70;

	tda18271_write_regs(fe, R_EP3, 7);
	msleep(5); /* pll locking */

	/* launch optimization algorithm */
	tda18271_write_regs(fe, R_EP2, 1);
	msleep(30); /* image low optimization completion */

	/* mid-band */
	regs[R_EP5] = 0x82;
	regs[R_CPD] = 0xa8;
	regs[R_CD2] = 0x00;
	regs[R_MPD] = 0xa9;
	regs[R_MD1] = 0x73;
	regs[R_MD2] = 0x1a;

	tda18271_write_regs(fe, R_EP3, 11);
	msleep(5); /* pll locking */

	/* launch detector */
	tda18271_write_regs(fe, R_EP1, 1);
	msleep(5); /* wanted mid measurement */

	regs[R_EP5] = 0x86;
	regs[R_CPD] = 0xa8;
	regs[R_CD1] = 0x66;
	regs[R_CD2] = 0xa0;

	tda18271_write_regs(fe, R_EP3, 7);
	msleep(5); /* pll locking */

	/* launch optimization algorithm */
	tda18271_write_regs(fe, R_EP2, 1);
	msleep(30); /* image mid optimization completion */

	/* high-band */
	regs[R_EP5] = 0x83;
	regs[R_CPD] = 0x98;
	regs[R_CD1] = 0x65;
	regs[R_CD2] = 0x00;
	regs[R_MPD] = 0x99;
	regs[R_MD1] = 0x71;
	regs[R_MD2] = 0xcd;

	tda18271_write_regs(fe, R_EP3, 11);
	msleep(5); /* pll locking */

	/* launch detector */
	tda18271_write_regs(fe, R_EP1, 1);
	msleep(5); /* wanted high measurement */

	regs[R_EP5] = 0x87;
	regs[R_CD1] = 0x65;
	regs[R_CD2] = 0x50;

	tda18271_write_regs(fe, R_EP3, 7);
	msleep(5); /* pll locking */

	/* launch optimization algorithm */
	tda18271_write_regs(fe, R_EP2, 1);
	msleep(30); /* image high optimization completion */

	/* return to normal mode */
	regs[R_EP4] = 0x64;
	tda18271_write_regs(fe, R_EP4, 1);

	/* synchronize */
	tda18271_write_regs(fe, R_EP1, 1);

	return 0;
}

/*---------------------------------------------------------------------*/

/*
 *  Standby modes, EP3 [7:5]
 *
 *  | SM  || SM_LT || SM_XT || mode description
 *  |=====\\=======\\=======\\===================================
 *  |  0  ||   0   ||   0   || normal mode
 *  |-----||-------||-------||-----------------------------------
 *  |     ||       ||       || standby mode w/ slave tuner output
 *  |  1  ||   0   ||   0   || & loop thru & xtal oscillator on
 *  |-----||-------||-------||-----------------------------------
 *  |  1  ||   1   ||   0   || standby mode w/ xtal oscillator on
 *  |-----||-------||-------||-----------------------------------
 *  |  1  ||   1   ||   1   || power off
 *
 */

int tda18271_set_standby_mode(struct dvb_frontend *fe,
			      int sm, int sm_lt, int sm_xt)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;

	if (tda18271_debug & DBG_ADV)
		tda_dbg("sm = %d, sm_lt = %d, sm_xt = %d\n", sm, sm_lt, sm_xt);

	regs[R_EP3]  &= ~0xe0; /* clear sm, sm_lt, sm_xt */
	regs[R_EP3]  |= (sm    ? (1 << 7) : 0) |
			(sm_lt ? (1 << 6) : 0) |
			(sm_xt ? (1 << 5) : 0);

	return tda18271_write_regs(fe, R_EP3, 1);
}

/*---------------------------------------------------------------------*/

int tda18271_calc_main_pll(struct dvb_frontend *fe, u32 freq)
{
	/* sets main post divider & divider bytes, but does not write them */
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	u8 d, pd;
	u32 div;

	int ret = tda18271_lookup_pll_map(fe, MAIN_PLL, &freq, &pd, &d);
	if (tda_fail(ret))
		goto fail;

	regs[R_MPD]   = (0x7f & pd);

	div =  ((d * (freq / 1000)) << 7) / 125;

	regs[R_MD1]   = 0x7f & (div >> 16);
	regs[R_MD2]   = 0xff & (div >> 8);
	regs[R_MD3]   = 0xff & div;
fail:
	return ret;
}

int tda18271_calc_cal_pll(struct dvb_frontend *fe, u32 freq)
{
	/* sets cal post divider & divider bytes, but does not write them */
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	u8 d, pd;
	u32 div;

	int ret = tda18271_lookup_pll_map(fe, CAL_PLL, &freq, &pd, &d);
	if (tda_fail(ret))
		goto fail;

	regs[R_CPD]   = pd;

	div =  ((d * (freq / 1000)) << 7) / 125;

	regs[R_CD1]   = 0x7f & (div >> 16);
	regs[R_CD2]   = 0xff & (div >> 8);
	regs[R_CD3]   = 0xff & div;
fail:
	return ret;
}

/*---------------------------------------------------------------------*/

int tda18271_calc_bp_filter(struct dvb_frontend *fe, u32 *freq)
{
	/* sets bp filter bits, but does not write them */
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	u8 val;

	int ret = tda18271_lookup_map(fe, BP_FILTER, freq, &val);
	if (tda_fail(ret))
		goto fail;

	regs[R_EP1]  &= ~0x07; /* clear bp filter bits */
	regs[R_EP1]  |= (0x07 & val);
fail:
	return ret;
}

int tda18271_calc_km(struct dvb_frontend *fe, u32 *freq)
{
	/* sets K & M bits, but does not write them */
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	u8 val;

	int ret = tda18271_lookup_map(fe, RF_CAL_KMCO, freq, &val);
	if (tda_fail(ret))
		goto fail;

	regs[R_EB13] &= ~0x7c; /* clear k & m bits */
	regs[R_EB13] |= (0x7c & val);
fail:
	return ret;
}

int tda18271_calc_rf_band(struct dvb_frontend *fe, u32 *freq)
{
	/* sets rf band bits, but does not write them */
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	u8 val;

	int ret = tda18271_lookup_map(fe, RF_BAND, freq, &val);
	if (tda_fail(ret))
		goto fail;

	regs[R_EP2]  &= ~0xe0; /* clear rf band bits */
	regs[R_EP2]  |= (0xe0 & (val << 5));
fail:
	return ret;
}

int tda18271_calc_gain_taper(struct dvb_frontend *fe, u32 *freq)
{
	/* sets gain taper bits, but does not write them */
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	u8 val;

	int ret = tda18271_lookup_map(fe, GAIN_TAPER, freq, &val);
	if (tda_fail(ret))
		goto fail;

	regs[R_EP2]  &= ~0x1f; /* clear gain taper bits */
	regs[R_EP2]  |= (0x1f & val);
fail:
	return ret;
}

int tda18271_calc_ir_measure(struct dvb_frontend *fe, u32 *freq)
{
	/* sets IR Meas bits, but does not write them */
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	u8 val;

	int ret = tda18271_lookup_map(fe, IR_MEASURE, freq, &val);
	if (tda_fail(ret))
		goto fail;

	regs[R_EP5] &= ~0x07;
	regs[R_EP5] |= (0x07 & val);
fail:
	return ret;
}

int tda18271_calc_rf_cal(struct dvb_frontend *fe, u32 *freq)
{
	/* sets rf cal byte (RFC_Cprog), but does not write it */
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	u8 val;

	int ret = tda18271_lookup_map(fe, RF_CAL, freq, &val);
	/* The TDA18271HD/C1 rf_cal map lookup is expected to go out of range
	 * for frequencies above 61.1 MHz.  In these cases, the internal RF
	 * tracking filters calibration mechanism is used.
	 *
	 * There is no need to warn the user about this.
	 */
	if (ret < 0)
		goto fail;

	regs[R_EB14] = val;
fail:
	return ret;
}

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * End:
 */