summaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb-frontends/dvb-pll.c
blob: 7bec3e028beec10e188fea4d9f53cc40556f8ddf (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
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
/*
 * descriptions + helper functions for simple dvb plls.
 *
 * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
 *
 *  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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/dvb/frontend.h>
#include <asm/types.h>

#include "dvb-pll.h"

#define dprintk(fmt, arg...) \
	printk(KERN_DEBUG pr_fmt("%s: " fmt), __func__, ##arg)

struct dvb_pll_priv {
	/* pll number */
	int nr;

	/* i2c details */
	int pll_i2c_address;
	struct i2c_adapter *i2c;

	/* the PLL descriptor */
	const struct dvb_pll_desc *pll_desc;

	/* cached frequency/bandwidth */
	u32 frequency;
	u32 bandwidth;
};

#define DVB_PLL_MAX 64

static unsigned int dvb_pll_devcount;

static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "enable verbose debug messages");

static unsigned int id[DVB_PLL_MAX] =
	{ [ 0 ... (DVB_PLL_MAX-1) ] = DVB_PLL_UNDEFINED };
module_param_array(id, int, NULL, 0644);
MODULE_PARM_DESC(id, "force pll id to use (DEBUG ONLY)");

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

struct dvb_pll_desc {
	const char *name;
	u32  min;
	u32  max;
	u32  iffreq;
	void (*set)(struct dvb_frontend *fe, u8 *buf);
	u8   *initdata;
	u8   *initdata2;
	u8   *sleepdata;
	int  count;
	struct {
		u32 limit;
		u32 stepsize;
		u8  config;
		u8  cb;
	} entries[];
};

/* ----------------------------------------------------------- */
/* descriptions                                                */

static const struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
	.name  = "Thomson dtt7579",
	.min   = 177000000,
	.max   = 858000000,
	.iffreq= 36166667,
	.sleepdata = (u8[]){ 2, 0xb4, 0x03 },
	.count = 4,
	.entries = {
		{  443250000, 166667, 0xb4, 0x02 },
		{  542000000, 166667, 0xb4, 0x08 },
		{  771000000, 166667, 0xbc, 0x08 },
		{  999999999, 166667, 0xf4, 0x08 },
	},
};

static void thomson_dtt759x_bw(struct dvb_frontend *fe, u8 *buf)
{
	u32 bw = fe->dtv_property_cache.bandwidth_hz;
	if (bw == 7000000)
		buf[3] |= 0x10;
}

static const struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
	.name  = "Thomson dtt759x",
	.min   = 177000000,
	.max   = 896000000,
	.set   = thomson_dtt759x_bw,
	.iffreq= 36166667,
	.sleepdata = (u8[]){ 2, 0x84, 0x03 },
	.count = 5,
	.entries = {
		{  264000000, 166667, 0xb4, 0x02 },
		{  470000000, 166667, 0xbc, 0x02 },
		{  735000000, 166667, 0xbc, 0x08 },
		{  835000000, 166667, 0xf4, 0x08 },
		{  999999999, 166667, 0xfc, 0x08 },
	},
};

static void thomson_dtt7520x_bw(struct dvb_frontend *fe, u8 *buf)
{
	u32 bw = fe->dtv_property_cache.bandwidth_hz;
	if (bw == 8000000)
		buf[3] ^= 0x10;
}

static const struct dvb_pll_desc dvb_pll_thomson_dtt7520x = {
	.name  = "Thomson dtt7520x",
	.min   = 185000000,
	.max   = 900000000,
	.set   = thomson_dtt7520x_bw,
	.iffreq = 36166667,
	.count = 7,
	.entries = {
		{  305000000, 166667, 0xb4, 0x12 },
		{  405000000, 166667, 0xbc, 0x12 },
		{  445000000, 166667, 0xbc, 0x12 },
		{  465000000, 166667, 0xf4, 0x18 },
		{  735000000, 166667, 0xfc, 0x18 },
		{  835000000, 166667, 0xbc, 0x18 },
		{  999999999, 166667, 0xfc, 0x18 },
	},
};

static const struct dvb_pll_desc dvb_pll_lg_z201 = {
	.name  = "LG z201",
	.min   = 174000000,
	.max   = 862000000,
	.iffreq= 36166667,
	.sleepdata = (u8[]){ 2, 0xbc, 0x03 },
	.count = 5,
	.entries = {
		{  157500000, 166667, 0xbc, 0x01 },
		{  443250000, 166667, 0xbc, 0x02 },
		{  542000000, 166667, 0xbc, 0x04 },
		{  830000000, 166667, 0xf4, 0x04 },
		{  999999999, 166667, 0xfc, 0x04 },
	},
};

static const struct dvb_pll_desc dvb_pll_unknown_1 = {
	.name  = "unknown 1", /* used by dntv live dvb-t */
	.min   = 174000000,
	.max   = 862000000,
	.iffreq= 36166667,
	.count = 9,
	.entries = {
		{  150000000, 166667, 0xb4, 0x01 },
		{  173000000, 166667, 0xbc, 0x01 },
		{  250000000, 166667, 0xb4, 0x02 },
		{  400000000, 166667, 0xbc, 0x02 },
		{  420000000, 166667, 0xf4, 0x02 },
		{  470000000, 166667, 0xfc, 0x02 },
		{  600000000, 166667, 0xbc, 0x08 },
		{  730000000, 166667, 0xf4, 0x08 },
		{  999999999, 166667, 0xfc, 0x08 },
	},
};

/* Infineon TUA6010XS
 * used in Thomson Cable Tuner
 */
static const struct dvb_pll_desc dvb_pll_tua6010xs = {
	.name  = "Infineon TUA6010XS",
	.min   =  44250000,
	.max   = 858000000,
	.iffreq= 36125000,
	.count = 3,
	.entries = {
		{  115750000, 62500, 0x8e, 0x03 },
		{  403250000, 62500, 0x8e, 0x06 },
		{  999999999, 62500, 0x8e, 0x85 },
	},
};

/* Panasonic env57h1xd5 (some Philips PLL ?) */
static const struct dvb_pll_desc dvb_pll_env57h1xd5 = {
	.name  = "Panasonic ENV57H1XD5",
	.min   =  44250000,
	.max   = 858000000,
	.iffreq= 36125000,
	.count = 4,
	.entries = {
		{  153000000, 166667, 0xc2, 0x41 },
		{  470000000, 166667, 0xc2, 0x42 },
		{  526000000, 166667, 0xc2, 0x84 },
		{  999999999, 166667, 0xc2, 0xa4 },
	},
};

/* Philips TDA6650/TDA6651
 * used in Panasonic ENV77H11D5
 */
static void tda665x_bw(struct dvb_frontend *fe, u8 *buf)
{
	u32 bw = fe->dtv_property_cache.bandwidth_hz;
	if (bw == 8000000)
		buf[3] |= 0x08;
}

static const struct dvb_pll_desc dvb_pll_tda665x = {
	.name  = "Philips TDA6650/TDA6651",
	.min   =  44250000,
	.max   = 858000000,
	.set   = tda665x_bw,
	.iffreq= 36166667,
	.initdata = (u8[]){ 4, 0x0b, 0xf5, 0x85, 0xab },
	.count = 12,
	.entries = {
		{   93834000, 166667, 0xca, 0x61 /* 011 0 0 0  01 */ },
		{  123834000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
		{  161000000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
		{  163834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
		{  253834000, 166667, 0xca, 0x62 /* 011 0 0 0  10 */ },
		{  383834000, 166667, 0xca, 0xa2 /* 101 0 0 0  10 */ },
		{  443834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
		{  444000000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
		{  583834000, 166667, 0xca, 0x64 /* 011 0 0 1  00 */ },
		{  793834000, 166667, 0xca, 0xa4 /* 101 0 0 1  00 */ },
		{  444834000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
		{  861000000, 166667, 0xca, 0xe4 /* 111 0 0 1  00 */ },
	}
};

/* Infineon TUA6034
 * used in LG TDTP E102P
 */
static void tua6034_bw(struct dvb_frontend *fe, u8 *buf)
{
	u32 bw = fe->dtv_property_cache.bandwidth_hz;
	if (bw == 7000000)
		buf[3] |= 0x08;
}

static const struct dvb_pll_desc dvb_pll_tua6034 = {
	.name  = "Infineon TUA6034",
	.min   =  44250000,
	.max   = 858000000,
	.iffreq= 36166667,
	.count = 3,
	.set   = tua6034_bw,
	.entries = {
		{  174500000, 62500, 0xce, 0x01 },
		{  230000000, 62500, 0xce, 0x02 },
		{  999999999, 62500, 0xce, 0x04 },
	},
};

/* ALPS TDED4
 * used in Nebula-Cards and USB boxes
 */
static void tded4_bw(struct dvb_frontend *fe, u8 *buf)
{
	u32 bw = fe->dtv_property_cache.bandwidth_hz;
	if (bw == 8000000)
		buf[3] |= 0x04;
}

static const struct dvb_pll_desc dvb_pll_tded4 = {
	.name = "ALPS TDED4",
	.min = 47000000,
	.max = 863000000,
	.iffreq= 36166667,
	.set   = tded4_bw,
	.count = 4,
	.entries = {
		{ 153000000, 166667, 0x85, 0x01 },
		{ 470000000, 166667, 0x85, 0x02 },
		{ 823000000, 166667, 0x85, 0x08 },
		{ 999999999, 166667, 0x85, 0x88 },
	}
};

/* ALPS TDHU2
 * used in AverTVHD MCE A180
 */
static const struct dvb_pll_desc dvb_pll_tdhu2 = {
	.name = "ALPS TDHU2",
	.min = 54000000,
	.max = 864000000,
	.iffreq= 44000000,
	.count = 4,
	.entries = {
		{ 162000000, 62500, 0x85, 0x01 },
		{ 426000000, 62500, 0x85, 0x02 },
		{ 782000000, 62500, 0x85, 0x08 },
		{ 999999999, 62500, 0x85, 0x88 },
	}
};

/* Samsung TBMV30111IN / TBMV30712IN1
 * used in Air2PC ATSC - 2nd generation (nxt2002)
 */
static const struct dvb_pll_desc dvb_pll_samsung_tbmv = {
	.name = "Samsung TBMV30111IN / TBMV30712IN1",
	.min = 54000000,
	.max = 860000000,
	.iffreq= 44000000,
	.count = 6,
	.entries = {
		{ 172000000, 166667, 0xb4, 0x01 },
		{ 214000000, 166667, 0xb4, 0x02 },
		{ 467000000, 166667, 0xbc, 0x02 },
		{ 721000000, 166667, 0xbc, 0x08 },
		{ 841000000, 166667, 0xf4, 0x08 },
		{ 999999999, 166667, 0xfc, 0x02 },
	}
};

/*
 * Philips SD1878 Tuner.
 */
static const struct dvb_pll_desc dvb_pll_philips_sd1878_tda8261 = {
	.name  = "Philips SD1878",
	.min   =  950000,
	.max   = 2150000,
	.iffreq= 249, /* zero-IF, offset 249 is to round up */
	.count = 4,
	.entries = {
		{ 1250000, 500, 0xc4, 0x00},
		{ 1450000, 500, 0xc4, 0x40},
		{ 2050000, 500, 0xc4, 0x80},
		{ 2150000, 500, 0xc4, 0xc0},
	},
};

static void opera1_bw(struct dvb_frontend *fe, u8 *buf)
{
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	struct dvb_pll_priv *priv = fe->tuner_priv;
	u32 b_w  = (c->symbol_rate * 27) / 32000;
	struct i2c_msg msg = {
		.addr = priv->pll_i2c_address,
		.flags = 0,
		.buf = buf,
		.len = 4
	};
	int result;
	u8 lpf;

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);

	result = i2c_transfer(priv->i2c, &msg, 1);
	if (result != 1)
		pr_err("%s: i2c_transfer failed:%d",
			__func__, result);

	if (b_w <= 10000)
		lpf = 0xc;
	else if (b_w <= 12000)
		lpf = 0x2;
	else if (b_w <= 14000)
		lpf = 0xa;
	else if (b_w <= 16000)
		lpf = 0x6;
	else if (b_w <= 18000)
		lpf = 0xe;
	else if (b_w <= 20000)
		lpf = 0x1;
	else if (b_w <= 22000)
		lpf = 0x9;
	else if (b_w <= 24000)
		lpf = 0x5;
	else if (b_w <= 26000)
		lpf = 0xd;
	else if (b_w <= 28000)
		lpf = 0x3;
		else
		lpf = 0xb;
	buf[2] ^= 0x1c; /* Flip bits 3-5 */
	/* Set lpf */
	buf[2] |= ((lpf >> 2) & 0x3) << 3;
	buf[3] |= (lpf & 0x3) << 2;

	return;
}

static const struct dvb_pll_desc dvb_pll_opera1 = {
	.name  = "Opera Tuner",
	.min   =  900000,
	.max   = 2250000,
	.initdata = (u8[]){ 4, 0x08, 0xe5, 0xe1, 0x00 },
	.initdata2 = (u8[]){ 4, 0x08, 0xe5, 0xe5, 0x00 },
	.iffreq= 0,
	.set   = opera1_bw,
	.count = 8,
	.entries = {
		{ 1064000, 500, 0xf9, 0xc2 },
		{ 1169000, 500, 0xf9, 0xe2 },
		{ 1299000, 500, 0xf9, 0x20 },
		{ 1444000, 500, 0xf9, 0x40 },
		{ 1606000, 500, 0xf9, 0x60 },
		{ 1777000, 500, 0xf9, 0x80 },
		{ 1941000, 500, 0xf9, 0xa0 },
		{ 2250000, 500, 0xf9, 0xc0 },
	}
};

static void samsung_dtos403ih102a_set(struct dvb_frontend *fe, u8 *buf)
{
	struct dvb_pll_priv *priv = fe->tuner_priv;
	struct i2c_msg msg = {
		.addr = priv->pll_i2c_address,
		.flags = 0,
		.buf = buf,
		.len = 4
	};
	int result;

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);

	result = i2c_transfer(priv->i2c, &msg, 1);
	if (result != 1)
		pr_err("%s: i2c_transfer failed:%d",
			__func__, result);

	buf[2] = 0x9e;
	buf[3] = 0x90;

	return;
}

/* unknown pll used in Samsung DTOS403IH102A DVB-C tuner */
static const struct dvb_pll_desc dvb_pll_samsung_dtos403ih102a = {
	.name   = "Samsung DTOS403IH102A",
	.min    =  44250000,
	.max    = 858000000,
	.iffreq =  36125000,
	.count  = 8,
	.set    = samsung_dtos403ih102a_set,
	.entries = {
		{ 135000000, 62500, 0xbe, 0x01 },
		{ 177000000, 62500, 0xf6, 0x01 },
		{ 370000000, 62500, 0xbe, 0x02 },
		{ 450000000, 62500, 0xf6, 0x02 },
		{ 466000000, 62500, 0xfe, 0x02 },
		{ 538000000, 62500, 0xbe, 0x08 },
		{ 826000000, 62500, 0xf6, 0x08 },
		{ 999999999, 62500, 0xfe, 0x08 },
	}
};

/* Samsung TDTC9251DH0 DVB-T NIM, as used on AirStar 2 */
static const struct dvb_pll_desc dvb_pll_samsung_tdtc9251dh0 = {
	.name	= "Samsung TDTC9251DH0",
	.min	=  48000000,
	.max	= 863000000,
	.iffreq	=  36166667,
	.count	= 3,
	.entries = {
		{ 157500000, 166667, 0xcc, 0x09 },
		{ 443000000, 166667, 0xcc, 0x0a },
		{ 863000000, 166667, 0xcc, 0x08 },
	}
};

/* Samsung TBDU18132 DVB-S NIM with TSA5059 PLL, used in SkyStar2 DVB-S 2.3 */
static const struct dvb_pll_desc dvb_pll_samsung_tbdu18132 = {
	.name = "Samsung TBDU18132",
	.min	=  950000,
	.max	= 2150000, /* guesses */
	.iffreq = 0,
	.count = 2,
	.entries = {
		{ 1550000, 125, 0x84, 0x82 },
		{ 4095937, 125, 0x84, 0x80 },
	}
	/* TSA5059 PLL has a 17 bit divisor rather than the 15 bits supported
	 * by this driver.  The two extra bits are 0x60 in the third byte.  15
	 * bits is enough for over 4 GHz, which is enough to cover the range
	 * of this tuner.  We could use the additional divisor bits by adding
	 * more entries, e.g.
	 { 0x0ffff * 125 + 125/2, 125, 0x84 | 0x20, },
	 { 0x17fff * 125 + 125/2, 125, 0x84 | 0x40, },
	 { 0x1ffff * 125 + 125/2, 125, 0x84 | 0x60, }, */
};

/* Samsung TBMU24112 DVB-S NIM with SL1935 zero-IF tuner */
static const struct dvb_pll_desc dvb_pll_samsung_tbmu24112 = {
	.name = "Samsung TBMU24112",
	.min	=  950000,
	.max	= 2150000, /* guesses */
	.iffreq = 0,
	.count = 2,
	.entries = {
		{ 1500000, 125, 0x84, 0x18 },
		{ 9999999, 125, 0x84, 0x08 },
	}
};

/* Alps TDEE4 DVB-C NIM, used on Cablestar 2 */
/* byte 4 : 1  *   *   AGD R3  R2  R1  R0
 * byte 5 : C1 *   RE  RTS BS4 BS3 BS2 BS1
 * AGD = 1, R3 R2 R1 R0 = 0 1 0 1 => byte 4 = 1**10101 = 0x95
 * Range(MHz)  C1 *  RE RTS BS4 BS3 BS2 BS1  Byte 5
 *  47 - 153   0  *  0   0   0   0   0   1   0x01
 * 153 - 430   0  *  0   0   0   0   1   0   0x02
 * 430 - 822   0  *  0   0   1   0   0   0   0x08
 * 822 - 862   1  *  0   0   1   0   0   0   0x88 */
static const struct dvb_pll_desc dvb_pll_alps_tdee4 = {
	.name = "ALPS TDEE4",
	.min	=  47000000,
	.max	= 862000000,
	.iffreq	=  36125000,
	.count = 4,
	.entries = {
		{ 153000000, 62500, 0x95, 0x01 },
		{ 430000000, 62500, 0x95, 0x02 },
		{ 822000000, 62500, 0x95, 0x08 },
		{ 999999999, 62500, 0x95, 0x88 },
	}
};

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

static const struct dvb_pll_desc *pll_list[] = {
	[DVB_PLL_UNDEFINED]              = NULL,
	[DVB_PLL_THOMSON_DTT7579]        = &dvb_pll_thomson_dtt7579,
	[DVB_PLL_THOMSON_DTT759X]        = &dvb_pll_thomson_dtt759x,
	[DVB_PLL_THOMSON_DTT7520X]       = &dvb_pll_thomson_dtt7520x,
	[DVB_PLL_LG_Z201]                = &dvb_pll_lg_z201,
	[DVB_PLL_UNKNOWN_1]              = &dvb_pll_unknown_1,
	[DVB_PLL_TUA6010XS]              = &dvb_pll_tua6010xs,
	[DVB_PLL_ENV57H1XD5]             = &dvb_pll_env57h1xd5,
	[DVB_PLL_TUA6034]                = &dvb_pll_tua6034,
	[DVB_PLL_TDA665X]                = &dvb_pll_tda665x,
	[DVB_PLL_TDED4]                  = &dvb_pll_tded4,
	[DVB_PLL_TDEE4]                  = &dvb_pll_alps_tdee4,
	[DVB_PLL_TDHU2]                  = &dvb_pll_tdhu2,
	[DVB_PLL_SAMSUNG_TBMV]           = &dvb_pll_samsung_tbmv,
	[DVB_PLL_PHILIPS_SD1878_TDA8261] = &dvb_pll_philips_sd1878_tda8261,
	[DVB_PLL_OPERA1]                 = &dvb_pll_opera1,
	[DVB_PLL_SAMSUNG_DTOS403IH102A]  = &dvb_pll_samsung_dtos403ih102a,
	[DVB_PLL_SAMSUNG_TDTC9251DH0]    = &dvb_pll_samsung_tdtc9251dh0,
	[DVB_PLL_SAMSUNG_TBDU18132]	 = &dvb_pll_samsung_tbdu18132,
	[DVB_PLL_SAMSUNG_TBMU24112]      = &dvb_pll_samsung_tbmu24112,
};

/* ----------------------------------------------------------- */
/* code                                                        */

static int dvb_pll_configure(struct dvb_frontend *fe, u8 *buf,
			     const u32 frequency)
{
	struct dvb_pll_priv *priv = fe->tuner_priv;
	const struct dvb_pll_desc *desc = priv->pll_desc;
	u32 div;
	int i;

	if (frequency && (frequency < desc->min || frequency > desc->max))
		return -EINVAL;

	for (i = 0; i < desc->count; i++) {
		if (frequency > desc->entries[i].limit)
			continue;
		break;
	}

	if (debug)
		dprintk("pll: %s: freq=%d | i=%d/%d\n", desc->name,
		       frequency, i, desc->count);
	if (i == desc->count)
		return -EINVAL;

	div = (frequency + desc->iffreq +
	       desc->entries[i].stepsize/2) / desc->entries[i].stepsize;
	buf[0] = div >> 8;
	buf[1] = div & 0xff;
	buf[2] = desc->entries[i].config;
	buf[3] = desc->entries[i].cb;

	if (desc->set)
		desc->set(fe, buf);

	if (debug)
		dprintk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
		       desc->name, div, buf[0], buf[1], buf[2], buf[3]);

	// calculate the frequency we set it to
	return (div * desc->entries[i].stepsize) - desc->iffreq;
}

static void dvb_pll_release(struct dvb_frontend *fe)
{
	kfree(fe->tuner_priv);
	fe->tuner_priv = NULL;
}

static int dvb_pll_sleep(struct dvb_frontend *fe)
{
	struct dvb_pll_priv *priv = fe->tuner_priv;

	if (priv->i2c == NULL)
		return -EINVAL;

	if (priv->pll_desc->sleepdata) {
		struct i2c_msg msg = { .flags = 0,
			.addr = priv->pll_i2c_address,
			.buf = priv->pll_desc->sleepdata + 1,
			.len = priv->pll_desc->sleepdata[0] };

		int result;

		if (fe->ops.i2c_gate_ctrl)
			fe->ops.i2c_gate_ctrl(fe, 1);
		if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
			return result;
		}
		return 0;
	}
	/* Shouldn't be called when initdata is NULL, maybe BUG()? */
	return -EINVAL;
}

static int dvb_pll_set_params(struct dvb_frontend *fe)
{
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	struct dvb_pll_priv *priv = fe->tuner_priv;
	u8 buf[4];
	struct i2c_msg msg =
		{ .addr = priv->pll_i2c_address, .flags = 0,
		  .buf = buf, .len = sizeof(buf) };
	int result;
	u32 frequency = 0;

	if (priv->i2c == NULL)
		return -EINVAL;

	result = dvb_pll_configure(fe, buf, c->frequency);
	if (result < 0)
		return result;
	else
		frequency = result;

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);
	if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
		return result;
	}

	priv->frequency = frequency;
	priv->bandwidth = c->bandwidth_hz;

	return 0;
}

static int dvb_pll_calc_regs(struct dvb_frontend *fe,
			     u8 *buf, int buf_len)
{
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	struct dvb_pll_priv *priv = fe->tuner_priv;
	int result;
	u32 frequency = 0;

	if (buf_len < 5)
		return -EINVAL;

	result = dvb_pll_configure(fe, buf + 1, c->frequency);
	if (result < 0)
		return result;
	else
		frequency = result;

	buf[0] = priv->pll_i2c_address;

	priv->frequency = frequency;
	priv->bandwidth = c->bandwidth_hz;

	return 5;
}

static int dvb_pll_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
	struct dvb_pll_priv *priv = fe->tuner_priv;
	*frequency = priv->frequency;
	return 0;
}

static int dvb_pll_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
	struct dvb_pll_priv *priv = fe->tuner_priv;
	*bandwidth = priv->bandwidth;
	return 0;
}

static int dvb_pll_init(struct dvb_frontend *fe)
{
	struct dvb_pll_priv *priv = fe->tuner_priv;

	if (priv->i2c == NULL)
		return -EINVAL;

	if (priv->pll_desc->initdata) {
		struct i2c_msg msg = { .flags = 0,
			.addr = priv->pll_i2c_address,
			.buf = priv->pll_desc->initdata + 1,
			.len = priv->pll_desc->initdata[0] };

		int result;
		if (fe->ops.i2c_gate_ctrl)
			fe->ops.i2c_gate_ctrl(fe, 1);
		result = i2c_transfer(priv->i2c, &msg, 1);
		if (result != 1)
			return result;
		if (priv->pll_desc->initdata2) {
			msg.buf = priv->pll_desc->initdata2 + 1;
			msg.len = priv->pll_desc->initdata2[0];
			if (fe->ops.i2c_gate_ctrl)
				fe->ops.i2c_gate_ctrl(fe, 1);
			result = i2c_transfer(priv->i2c, &msg, 1);
			if (result != 1)
				return result;
		}
		return 0;
	}
	/* Shouldn't be called when initdata is NULL, maybe BUG()? */
	return -EINVAL;
}

static const struct dvb_tuner_ops dvb_pll_tuner_ops = {
	.release = dvb_pll_release,
	.sleep = dvb_pll_sleep,
	.init = dvb_pll_init,
	.set_params = dvb_pll_set_params,
	.calc_regs = dvb_pll_calc_regs,
	.get_frequency = dvb_pll_get_frequency,
	.get_bandwidth = dvb_pll_get_bandwidth,
};

struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr,
				    struct i2c_adapter *i2c,
				    unsigned int pll_desc_id)
{
	u8 b1 [] = { 0 };
	struct i2c_msg msg = { .addr = pll_addr, .flags = I2C_M_RD,
			       .buf = b1, .len = 1 };
	struct dvb_pll_priv *priv = NULL;
	int ret;
	const struct dvb_pll_desc *desc;

	if ((id[dvb_pll_devcount] > DVB_PLL_UNDEFINED) &&
	    (id[dvb_pll_devcount] < ARRAY_SIZE(pll_list)))
		pll_desc_id = id[dvb_pll_devcount];

	BUG_ON(pll_desc_id < 1 || pll_desc_id >= ARRAY_SIZE(pll_list));

	desc = pll_list[pll_desc_id];

	if (i2c != NULL) {
		if (fe->ops.i2c_gate_ctrl)
			fe->ops.i2c_gate_ctrl(fe, 1);

		ret = i2c_transfer (i2c, &msg, 1);
		if (ret != 1)
			return NULL;
		if (fe->ops.i2c_gate_ctrl)
			     fe->ops.i2c_gate_ctrl(fe, 0);
	}

	priv = kzalloc(sizeof(struct dvb_pll_priv), GFP_KERNEL);
	if (priv == NULL)
		return NULL;

	priv->pll_i2c_address = pll_addr;
	priv->i2c = i2c;
	priv->pll_desc = desc;
	priv->nr = dvb_pll_devcount++;

	memcpy(&fe->ops.tuner_ops, &dvb_pll_tuner_ops,
	       sizeof(struct dvb_tuner_ops));

	strncpy(fe->ops.tuner_ops.info.name, desc->name,
		sizeof(fe->ops.tuner_ops.info.name));
	fe->ops.tuner_ops.info.frequency_min = desc->min;
	fe->ops.tuner_ops.info.frequency_max = desc->max;
	if (!desc->initdata)
		fe->ops.tuner_ops.init = NULL;
	if (!desc->sleepdata)
		fe->ops.tuner_ops.sleep = NULL;

	fe->tuner_priv = priv;

	if ((debug) || (id[priv->nr] == pll_desc_id)) {
		dprintk("dvb-pll[%d]", priv->nr);
		if (i2c != NULL)
			pr_cont(" %d-%04x", i2c_adapter_id(i2c), pll_addr);
		pr_cont(": id# %d (%s) attached, %s\n", pll_desc_id, desc->name,
		       id[priv->nr] == pll_desc_id ?
				"insmod option" : "autodetected");
	}

	return fe;
}
EXPORT_SYMBOL(dvb_pll_attach);

MODULE_DESCRIPTION("dvb pll library");
MODULE_AUTHOR("Gerd Knorr");
MODULE_LICENSE("GPL");