summaryrefslogtreecommitdiffstats
path: root/drivers/media/tuners/tuner-simple.c
blob: 36b88f820239ce602b736afaf2c22743c50b298d (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
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
/*
 * i2c tv tuner chip device driver
 * controls all those simple 4-control-bytes style tuners.
 *
 * This "tuner-simple" module was split apart from the original "tuner" module.
 */
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/tuner.h>
#include <media/v4l2-common.h>
#include <media/tuner-types.h>
#include "tuner-i2c.h"
#include "tuner-simple.h"

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

#define TUNER_SIMPLE_MAX 64
static unsigned int simple_devcount;

static int offset;
module_param(offset, int, 0664);
MODULE_PARM_DESC(offset, "Allows to specify an offset for tuner");

static unsigned int atv_input[TUNER_SIMPLE_MAX] = \
			{ [0 ... (TUNER_SIMPLE_MAX-1)] = 0 };
static unsigned int dtv_input[TUNER_SIMPLE_MAX] = \
			{ [0 ... (TUNER_SIMPLE_MAX-1)] = 0 };
module_param_array(atv_input, int, NULL, 0644);
module_param_array(dtv_input, int, NULL, 0644);
MODULE_PARM_DESC(atv_input, "specify atv rf input, 0 for autoselect");
MODULE_PARM_DESC(dtv_input, "specify dtv rf input, 0 for autoselect");

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

/* tv standard selection for Temic 4046 FM5
   this value takes the low bits of control byte 2
   from datasheet Rev.01, Feb.00
     standard     BG      I       L       L2      D
     picture IF   38.9    38.9    38.9    33.95   38.9
     sound 1      33.4    32.9    32.4    40.45   32.4
     sound 2      33.16
     NICAM        33.05   32.348  33.05           33.05
 */
#define TEMIC_SET_PAL_I         0x05
#define TEMIC_SET_PAL_DK        0x09
#define TEMIC_SET_PAL_L         0x0a /* SECAM ? */
#define TEMIC_SET_PAL_L2        0x0b /* change IF ! */
#define TEMIC_SET_PAL_BG        0x0c

/* tv tuner system standard selection for Philips FQ1216ME
   this value takes the low bits of control byte 2
   from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
     standard		BG	DK	I	L	L`
     picture carrier	38.90	38.90	38.90	38.90	33.95
     colour		34.47	34.47	34.47	34.47	38.38
     sound 1		33.40	32.40	32.90	32.40	40.45
     sound 2		33.16	-	-	-	-
     NICAM		33.05	33.05	32.35	33.05	39.80
 */
#define PHILIPS_SET_PAL_I	0x01 /* Bit 2 always zero !*/
#define PHILIPS_SET_PAL_BGDK	0x09
#define PHILIPS_SET_PAL_L2	0x0a
#define PHILIPS_SET_PAL_L	0x0b

/* system switching for Philips FI1216MF MK2
   from datasheet "1996 Jul 09",
    standard         BG     L      L'
    picture carrier  38.90  38.90  33.95
    colour	     34.47  34.37  38.38
    sound 1          33.40  32.40  40.45
    sound 2          33.16  -      -
    NICAM            33.05  33.05  39.80
 */
#define PHILIPS_MF_SET_STD_BG	0x01 /* Bit 2 must be zero, Bit 3 is system output */
#define PHILIPS_MF_SET_STD_L	0x03 /* Used on Secam France */
#define PHILIPS_MF_SET_STD_LC	0x02 /* Used on SECAM L' */

/* Control byte */

#define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
#define TUNER_RATIO_SELECT_50   0x00
#define TUNER_RATIO_SELECT_32   0x02
#define TUNER_RATIO_SELECT_166  0x04
#define TUNER_RATIO_SELECT_62   0x06

#define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */

/* Status byte */

#define TUNER_POR	  0x80
#define TUNER_FL          0x40
#define TUNER_MODE        0x38
#define TUNER_AFC         0x07
#define TUNER_SIGNAL      0x07
#define TUNER_STEREO      0x10

#define TUNER_PLL_LOCKED   0x40
#define TUNER_STEREO_MK3   0x04

static DEFINE_MUTEX(tuner_simple_list_mutex);
static LIST_HEAD(hybrid_tuner_instance_list);

struct tuner_simple_priv {
	unsigned int nr;
	u16 last_div;

	struct tuner_i2c_props i2c_props;
	struct list_head hybrid_tuner_instance_list;

	unsigned int type;
	struct tunertype *tun;

	u32 frequency;
	u32 bandwidth;
	bool radio_mode;
};

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

static int tuner_read_status(struct dvb_frontend *fe)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	unsigned char byte;

	if (1 != tuner_i2c_xfer_recv(&priv->i2c_props, &byte, 1))
		return 0;

	return byte;
}

static inline int tuner_signal(const int status)
{
	return (status & TUNER_SIGNAL) << 13;
}

static inline int tuner_stereo(const int type, const int status)
{
	switch (type) {
	case TUNER_PHILIPS_FM1216ME_MK3:
	case TUNER_PHILIPS_FM1236_MK3:
	case TUNER_PHILIPS_FM1256_IH3:
	case TUNER_LG_NTSC_TAPE:
	case TUNER_TCL_MF02GIP_5N:
		return ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
	case TUNER_PHILIPS_FM1216MK5:
		return status | TUNER_STEREO;
	default:
		return status & TUNER_STEREO;
	}
}

static inline int tuner_islocked(const int status)
{
	return (status & TUNER_FL);
}

static inline int tuner_afcstatus(const int status)
{
	return (status & TUNER_AFC) - 2;
}


static int simple_get_status(struct dvb_frontend *fe, u32 *status)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	int tuner_status;

	if (priv->i2c_props.adap == NULL)
		return -EINVAL;

	tuner_status = tuner_read_status(fe);

	*status = 0;

	if (tuner_islocked(tuner_status))
		*status = TUNER_STATUS_LOCKED;
	if (tuner_stereo(priv->type, tuner_status))
		*status |= TUNER_STATUS_STEREO;

	tuner_dbg("AFC Status: %d\n", tuner_afcstatus(tuner_status));

	return 0;
}

static int simple_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	int signal;

	if (priv->i2c_props.adap == NULL || !priv->radio_mode)
		return -EINVAL;

	signal = tuner_signal(tuner_read_status(fe));

	*strength = signal;

	tuner_dbg("Signal strength: %d\n", signal);

	return 0;
}

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

static inline char *tuner_param_name(enum param_type type)
{
	char *name;

	switch (type) {
	case TUNER_PARAM_TYPE_RADIO:
		name = "radio";
		break;
	case TUNER_PARAM_TYPE_PAL:
		name = "pal";
		break;
	case TUNER_PARAM_TYPE_SECAM:
		name = "secam";
		break;
	case TUNER_PARAM_TYPE_NTSC:
		name = "ntsc";
		break;
	case TUNER_PARAM_TYPE_DIGITAL:
		name = "digital";
		break;
	default:
		name = "unknown";
		break;
	}
	return name;
}

static struct tuner_params *simple_tuner_params(struct dvb_frontend *fe,
						enum param_type desired_type)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	struct tunertype *tun = priv->tun;
	int i;

	for (i = 0; i < tun->count; i++)
		if (desired_type == tun->params[i].type)
			break;

	/* use default tuner params if desired_type not available */
	if (i == tun->count) {
		tuner_dbg("desired params (%s) undefined for tuner %d\n",
			  tuner_param_name(desired_type), priv->type);
		i = 0;
	}

	tuner_dbg("using tuner params #%d (%s)\n", i,
		  tuner_param_name(tun->params[i].type));

	return &tun->params[i];
}

static int simple_config_lookup(struct dvb_frontend *fe,
				struct tuner_params *t_params,
				unsigned *frequency, u8 *config, u8 *cb)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	int i;

	for (i = 0; i < t_params->count; i++) {
		if (*frequency > t_params->ranges[i].limit)
			continue;
		break;
	}
	if (i == t_params->count) {
		tuner_dbg("frequency out of range (%d > %d)\n",
			  *frequency, t_params->ranges[i - 1].limit);
		*frequency = t_params->ranges[--i].limit;
	}
	*config = t_params->ranges[i].config;
	*cb     = t_params->ranges[i].cb;

	tuner_dbg("freq = %d.%02d (%d), range = %d, config = 0x%02x, cb = 0x%02x\n",
		  *frequency / 16, *frequency % 16 * 100 / 16, *frequency,
		  i, *config, *cb);

	return i;
}

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

static void simple_set_rf_input(struct dvb_frontend *fe,
				u8 *config, u8 *cb, unsigned int rf)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;

	switch (priv->type) {
	case TUNER_PHILIPS_TUV1236D:
		switch (rf) {
		case 1:
			*cb |= 0x08;
			break;
		default:
			*cb &= ~0x08;
			break;
		}
		break;
	case TUNER_PHILIPS_FCV1236D:
		switch (rf) {
		case 1:
			*cb |= 0x01;
			break;
		default:
			*cb &= ~0x01;
			break;
		}
		break;
	default:
		break;
	}
}

static int simple_std_setup(struct dvb_frontend *fe,
			    struct analog_parameters *params,
			    u8 *config, u8 *cb)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	int rc;

	/* tv norm specific stuff for multi-norm tuners */
	switch (priv->type) {
	case TUNER_PHILIPS_SECAM: /* FI1216MF */
		/* 0x01 -> ??? no change ??? */
		/* 0x02 -> PAL BDGHI / SECAM L */
		/* 0x04 -> ??? PAL others / SECAM others ??? */
		*cb &= ~0x03;
		if (params->std & V4L2_STD_SECAM_L)
			/* also valid for V4L2_STD_SECAM */
			*cb |= PHILIPS_MF_SET_STD_L;
		else if (params->std & V4L2_STD_SECAM_LC)
			*cb |= PHILIPS_MF_SET_STD_LC;
		else /* V4L2_STD_B|V4L2_STD_GH */
			*cb |= PHILIPS_MF_SET_STD_BG;
		break;

	case TUNER_TEMIC_4046FM5:
		*cb &= ~0x0f;

		if (params->std & V4L2_STD_PAL_BG) {
			*cb |= TEMIC_SET_PAL_BG;

		} else if (params->std & V4L2_STD_PAL_I) {
			*cb |= TEMIC_SET_PAL_I;

		} else if (params->std & V4L2_STD_PAL_DK) {
			*cb |= TEMIC_SET_PAL_DK;

		} else if (params->std & V4L2_STD_SECAM_L) {
			*cb |= TEMIC_SET_PAL_L;

		}
		break;

	case TUNER_PHILIPS_FQ1216ME:
		*cb &= ~0x0f;

		if (params->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
			*cb |= PHILIPS_SET_PAL_BGDK;

		} else if (params->std & V4L2_STD_PAL_I) {
			*cb |= PHILIPS_SET_PAL_I;

		} else if (params->std & V4L2_STD_SECAM_L) {
			*cb |= PHILIPS_SET_PAL_L;

		}
		break;

	case TUNER_PHILIPS_FCV1236D:
		/* 0x00 -> ATSC antenna input 1 */
		/* 0x01 -> ATSC antenna input 2 */
		/* 0x02 -> NTSC antenna input 1 */
		/* 0x03 -> NTSC antenna input 2 */
		*cb &= ~0x03;
		if (!(params->std & V4L2_STD_ATSC))
			*cb |= 2;
		break;

	case TUNER_MICROTUNE_4042FI5:
		/* Set the charge pump for fast tuning */
		*config |= TUNER_CHARGE_PUMP;
		break;

	case TUNER_PHILIPS_TUV1236D:
	{
		struct tuner_i2c_props i2c = priv->i2c_props;
		/* 0x40 -> ATSC antenna input 1 */
		/* 0x48 -> ATSC antenna input 2 */
		/* 0x00 -> NTSC antenna input 1 */
		/* 0x08 -> NTSC antenna input 2 */
		u8 buffer[4] = { 0x14, 0x00, 0x17, 0x00};
		*cb &= ~0x40;
		if (params->std & V4L2_STD_ATSC) {
			*cb |= 0x40;
			buffer[1] = 0x04;
		}
		/* set to the correct mode (analog or digital) */
		i2c.addr = 0x0a;
		rc = tuner_i2c_xfer_send(&i2c, &buffer[0], 2);
		if (2 != rc)
			tuner_warn("i2c i/o error: rc == %d (should be 2)\n",
				   rc);
		rc = tuner_i2c_xfer_send(&i2c, &buffer[2], 2);
		if (2 != rc)
			tuner_warn("i2c i/o error: rc == %d (should be 2)\n",
				   rc);
		break;
	}
	}
	if (atv_input[priv->nr])
		simple_set_rf_input(fe, config, cb, atv_input[priv->nr]);

	return 0;
}

static int simple_set_aux_byte(struct dvb_frontend *fe, u8 config, u8 aux)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	int rc;
	u8 buffer[2];

	buffer[0] = (config & ~0x38) | 0x18;
	buffer[1] = aux;

	tuner_dbg("setting aux byte: 0x%02x 0x%02x\n", buffer[0], buffer[1]);

	rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 2);
	if (2 != rc)
		tuner_warn("i2c i/o error: rc == %d (should be 2)\n", rc);

	return rc == 2 ? 0 : rc;
}

static int simple_post_tune(struct dvb_frontend *fe, u8 *buffer,
			    u16 div, u8 config, u8 cb)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	int rc;

	switch (priv->type) {
	case TUNER_LG_TDVS_H06XF:
		simple_set_aux_byte(fe, config, 0x20);
		break;
	case TUNER_PHILIPS_FQ1216LME_MK3:
		simple_set_aux_byte(fe, config, 0x60); /* External AGC */
		break;
	case TUNER_MICROTUNE_4042FI5:
	{
		/* FIXME - this may also work for other tuners */
		unsigned long timeout = jiffies + msecs_to_jiffies(1);
		u8 status_byte = 0;

		/* Wait until the PLL locks */
		for (;;) {
			if (time_after(jiffies, timeout))
				return 0;
			rc = tuner_i2c_xfer_recv(&priv->i2c_props,
						 &status_byte, 1);
			if (1 != rc) {
				tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",
					   rc);
				break;
			}
			if (status_byte & TUNER_PLL_LOCKED)
				break;
			udelay(10);
		}

		/* Set the charge pump for optimized phase noise figure */
		config &= ~TUNER_CHARGE_PUMP;
		buffer[0] = (div>>8) & 0x7f;
		buffer[1] = div      & 0xff;
		buffer[2] = config;
		buffer[3] = cb;
		tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
			  buffer[0], buffer[1], buffer[2], buffer[3]);

		rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
		if (4 != rc)
			tuner_warn("i2c i/o error: rc == %d (should be 4)\n",
				   rc);
		break;
	}
	}

	return 0;
}

static int simple_radio_bandswitch(struct dvb_frontend *fe, u8 *buffer)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;

	switch (priv->type) {
	case TUNER_TENA_9533_DI:
	case TUNER_YMEC_TVF_5533MF:
		tuner_dbg("This tuner doesn't have FM. Most cards have a TEA5767 for FM\n");
		return 0;
	case TUNER_PHILIPS_FM1216ME_MK3:
	case TUNER_PHILIPS_FM1236_MK3:
	case TUNER_PHILIPS_FMD1216ME_MK3:
	case TUNER_PHILIPS_FMD1216MEX_MK3:
	case TUNER_LG_NTSC_TAPE:
	case TUNER_PHILIPS_FM1256_IH3:
	case TUNER_TCL_MF02GIP_5N:
		buffer[3] = 0x19;
		break;
	case TUNER_PHILIPS_FM1216MK5:
		buffer[2] = 0x88;
		buffer[3] = 0x09;
		break;
	case TUNER_TNF_5335MF:
		buffer[3] = 0x11;
		break;
	case TUNER_LG_PAL_FM:
		buffer[3] = 0xa5;
		break;
	case TUNER_THOMSON_DTT761X:
		buffer[3] = 0x39;
		break;
	case TUNER_PHILIPS_FQ1216LME_MK3:
	case TUNER_PHILIPS_FQ1236_MK5:
		tuner_err("This tuner doesn't have FM\n");
		/* Set the low band for sanity, since it covers 88-108 MHz */
		buffer[3] = 0x01;
		break;
	case TUNER_MICROTUNE_4049FM5:
	default:
		buffer[3] = 0xa4;
		break;
	}

	return 0;
}

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

static int simple_set_tv_freq(struct dvb_frontend *fe,
			      struct analog_parameters *params)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	u8 config, cb;
	u16 div;
	u8 buffer[4];
	int rc, IFPCoff, i;
	enum param_type desired_type;
	struct tuner_params *t_params;

	/* IFPCoff = Video Intermediate Frequency - Vif:
		940  =16*58.75  NTSC/J (Japan)
		732  =16*45.75  M/N STD
		704  =16*44     ATSC (at DVB code)
		632  =16*39.50  I U.K.
		622.4=16*38.90  B/G D/K I, L STD
		592  =16*37.00  D China
		590  =16.36.875 B Australia
		543.2=16*33.95  L' STD
		171.2=16*10.70  FM Radio (at set_radio_freq)
	*/

	if (params->std == V4L2_STD_NTSC_M_JP) {
		IFPCoff      = 940;
		desired_type = TUNER_PARAM_TYPE_NTSC;
	} else if ((params->std & V4L2_STD_MN) &&
		  !(params->std & ~V4L2_STD_MN)) {
		IFPCoff      = 732;
		desired_type = TUNER_PARAM_TYPE_NTSC;
	} else if (params->std == V4L2_STD_SECAM_LC) {
		IFPCoff      = 543;
		desired_type = TUNER_PARAM_TYPE_SECAM;
	} else {
		IFPCoff      = 623;
		desired_type = TUNER_PARAM_TYPE_PAL;
	}

	t_params = simple_tuner_params(fe, desired_type);

	i = simple_config_lookup(fe, t_params, &params->frequency,
				 &config, &cb);

	div = params->frequency + IFPCoff + offset;

	tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
		  params->frequency / 16, params->frequency % 16 * 100 / 16,
		  IFPCoff / 16, IFPCoff % 16 * 100 / 16,
		  offset / 16, offset % 16 * 100 / 16, div);

	/* tv norm specific stuff for multi-norm tuners */
	simple_std_setup(fe, params, &config, &cb);

	if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
		buffer[0] = config;
		buffer[1] = cb;
		buffer[2] = (div>>8) & 0x7f;
		buffer[3] = div      & 0xff;
	} else {
		buffer[0] = (div>>8) & 0x7f;
		buffer[1] = div      & 0xff;
		buffer[2] = config;
		buffer[3] = cb;
	}
	priv->last_div = div;
	if (t_params->has_tda9887) {
		struct v4l2_priv_tun_config tda9887_cfg;
		int tda_config = 0;
		int is_secam_l = (params->std & (V4L2_STD_SECAM_L |
						 V4L2_STD_SECAM_LC)) &&
			!(params->std & ~(V4L2_STD_SECAM_L |
					  V4L2_STD_SECAM_LC));

		tda9887_cfg.tuner = TUNER_TDA9887;
		tda9887_cfg.priv  = &tda_config;

		if (params->std == V4L2_STD_SECAM_LC) {
			if (t_params->port1_active ^ t_params->port1_invert_for_secam_lc)
				tda_config |= TDA9887_PORT1_ACTIVE;
			if (t_params->port2_active ^ t_params->port2_invert_for_secam_lc)
				tda_config |= TDA9887_PORT2_ACTIVE;
		} else {
			if (t_params->port1_active)
				tda_config |= TDA9887_PORT1_ACTIVE;
			if (t_params->port2_active)
				tda_config |= TDA9887_PORT2_ACTIVE;
		}
		if (t_params->intercarrier_mode)
			tda_config |= TDA9887_INTERCARRIER;
		if (is_secam_l) {
			if (i == 0 && t_params->default_top_secam_low)
				tda_config |= TDA9887_TOP(t_params->default_top_secam_low);
			else if (i == 1 && t_params->default_top_secam_mid)
				tda_config |= TDA9887_TOP(t_params->default_top_secam_mid);
			else if (t_params->default_top_secam_high)
				tda_config |= TDA9887_TOP(t_params->default_top_secam_high);
		} else {
			if (i == 0 && t_params->default_top_low)
				tda_config |= TDA9887_TOP(t_params->default_top_low);
			else if (i == 1 && t_params->default_top_mid)
				tda_config |= TDA9887_TOP(t_params->default_top_mid);
			else if (t_params->default_top_high)
				tda_config |= TDA9887_TOP(t_params->default_top_high);
		}
		if (t_params->default_pll_gating_18)
			tda_config |= TDA9887_GATING_18;
		i2c_clients_command(priv->i2c_props.adap, TUNER_SET_CONFIG,
				    &tda9887_cfg);
	}
	tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
		  buffer[0], buffer[1], buffer[2], buffer[3]);

	rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
	if (4 != rc)
		tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);

	simple_post_tune(fe, &buffer[0], div, config, cb);

	return 0;
}

static int simple_set_radio_freq(struct dvb_frontend *fe,
				 struct analog_parameters *params)
{
	struct tunertype *tun;
	struct tuner_simple_priv *priv = fe->tuner_priv;
	u8 buffer[4];
	u16 div;
	int rc, j;
	struct tuner_params *t_params;
	unsigned int freq = params->frequency;

	tun = priv->tun;

	for (j = tun->count-1; j > 0; j--)
		if (tun->params[j].type == TUNER_PARAM_TYPE_RADIO)
			break;
	/* default t_params (j=0) will be used if desired type wasn't found */
	t_params = &tun->params[j];

	/* Select Radio 1st IF used */
	switch (t_params->radio_if) {
	case 0: /* 10.7 MHz */
		freq += (unsigned int)(10.7*16000);
		break;
	case 1: /* 33.3 MHz */
		freq += (unsigned int)(33.3*16000);
		break;
	case 2: /* 41.3 MHz */
		freq += (unsigned int)(41.3*16000);
		break;
	default:
		tuner_warn("Unsupported radio_if value %d\n",
			   t_params->radio_if);
		return 0;
	}

	buffer[2] = (t_params->ranges[0].config & ~TUNER_RATIO_MASK) |
		    TUNER_RATIO_SELECT_50; /* 50 kHz step */

	/* Bandswitch byte */
	simple_radio_bandswitch(fe, &buffer[0]);

	/* Convert from 1/16 kHz V4L steps to 1/20 MHz (=50 kHz) PLL steps
	   freq * (1 Mhz / 16000 V4L steps) * (20 PLL steps / 1 MHz) =
	   freq * (1/800) */
	div = (freq + 400) / 800;

	if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
		buffer[0] = buffer[2];
		buffer[1] = buffer[3];
		buffer[2] = (div>>8) & 0x7f;
		buffer[3] = div      & 0xff;
	} else {
		buffer[0] = (div>>8) & 0x7f;
		buffer[1] = div      & 0xff;
	}

	tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
	       buffer[0], buffer[1], buffer[2], buffer[3]);
	priv->last_div = div;

	if (t_params->has_tda9887) {
		int config = 0;
		struct v4l2_priv_tun_config tda9887_cfg;

		tda9887_cfg.tuner = TUNER_TDA9887;
		tda9887_cfg.priv = &config;

		if (t_params->port1_active &&
		    !t_params->port1_fm_high_sensitivity)
			config |= TDA9887_PORT1_ACTIVE;
		if (t_params->port2_active &&
		    !t_params->port2_fm_high_sensitivity)
			config |= TDA9887_PORT2_ACTIVE;
		if (t_params->intercarrier_mode)
			config |= TDA9887_INTERCARRIER;
/*		if (t_params->port1_set_for_fm_mono)
			config &= ~TDA9887_PORT1_ACTIVE;*/
		if (t_params->fm_gain_normal)
			config |= TDA9887_GAIN_NORMAL;
		if (t_params->radio_if == 2)
			config |= TDA9887_RIF_41_3;
		i2c_clients_command(priv->i2c_props.adap, TUNER_SET_CONFIG,
				    &tda9887_cfg);
	}
	rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
	if (4 != rc)
		tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);

	/* Write AUX byte */
	switch (priv->type) {
	case TUNER_PHILIPS_FM1216ME_MK3:
		buffer[2] = 0x98;
		buffer[3] = 0x20; /* set TOP AGC */
		rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 4);
		if (4 != rc)
			tuner_warn("i2c i/o error: rc == %d (should be 4)\n", rc);
		break;
	}

	return 0;
}

static int simple_set_params(struct dvb_frontend *fe,
			     struct analog_parameters *params)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;
	int ret = -EINVAL;

	if (priv->i2c_props.adap == NULL)
		return -EINVAL;

	switch (params->mode) {
	case V4L2_TUNER_RADIO:
		priv->radio_mode = true;
		ret = simple_set_radio_freq(fe, params);
		priv->frequency = params->frequency * 125 / 2;
		break;
	case V4L2_TUNER_ANALOG_TV:
	case V4L2_TUNER_DIGITAL_TV:
		priv->radio_mode = false;
		ret = simple_set_tv_freq(fe, params);
		priv->frequency = params->frequency * 62500;
		break;
	}
	priv->bandwidth = 0;

	return ret;
}

static void simple_set_dvb(struct dvb_frontend *fe, u8 *buf,
			   const u32 delsys,
			   const u32 frequency,
			   const u32 bandwidth)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;

	switch (priv->type) {
	case TUNER_PHILIPS_FMD1216ME_MK3:
	case TUNER_PHILIPS_FMD1216MEX_MK3:
		if (bandwidth == 8000000 &&
		    frequency >= 158870000)
			buf[3] |= 0x08;
		break;
	case TUNER_PHILIPS_TD1316:
		/* determine band */
		buf[3] |= (frequency < 161000000) ? 1 :
			  (frequency < 444000000) ? 2 : 4;

		/* setup PLL filter */
		if (bandwidth == 8000000)
			buf[3] |= 1 << 3;
		break;
	case TUNER_PHILIPS_TUV1236D:
	case TUNER_PHILIPS_FCV1236D:
	{
		unsigned int new_rf;

		if (dtv_input[priv->nr])
			new_rf = dtv_input[priv->nr];
		else
			switch (delsys) {
			case SYS_DVBC_ANNEX_B:
				new_rf = 1;
				break;
			case SYS_ATSC:
			default:
				new_rf = 0;
				break;
			}
		simple_set_rf_input(fe, &buf[2], &buf[3], new_rf);
		break;
	}
	default:
		break;
	}
}

static u32 simple_dvb_configure(struct dvb_frontend *fe, u8 *buf,
				const u32 delsys,
				const u32 freq,
				const u32 bw)
{
	/* This function returns the tuned frequency on success, 0 on error */
	struct tuner_simple_priv *priv = fe->tuner_priv;
	struct tunertype *tun = priv->tun;
	struct tuner_params *t_params;
	u8 config, cb;
	u32 div;
	int ret;
	u32 frequency = freq / 62500;

	if (!tun->stepsize) {
		/* tuner-core was loaded before the digital tuner was
		 * configured and somehow picked the wrong tuner type */
		tuner_err("attempt to treat tuner %d (%s) as digital tuner without stepsize defined.\n",
			  priv->type, priv->tun->name);
		return 0; /* failure */
	}

	t_params = simple_tuner_params(fe, TUNER_PARAM_TYPE_DIGITAL);
	ret = simple_config_lookup(fe, t_params, &frequency, &config, &cb);
	if (ret < 0)
		return 0; /* failure */

	div = ((frequency + t_params->iffreq) * 62500 + offset +
	       tun->stepsize/2) / tun->stepsize;

	buf[0] = div >> 8;
	buf[1] = div & 0xff;
	buf[2] = config;
	buf[3] = cb;

	simple_set_dvb(fe, buf, delsys, freq, bw);

	tuner_dbg("%s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
		  tun->name, div, buf[0], buf[1], buf[2], buf[3]);

	/* calculate the frequency we set it to */
	return (div * tun->stepsize) - t_params->iffreq;
}

static int simple_dvb_calc_regs(struct dvb_frontend *fe,
				u8 *buf, int buf_len)
{
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	u32 delsys = c->delivery_system;
	u32 bw = c->bandwidth_hz;
	struct tuner_simple_priv *priv = fe->tuner_priv;
	u32 frequency;

	if (buf_len < 5)
		return -EINVAL;

	frequency = simple_dvb_configure(fe, buf+1, delsys, c->frequency, bw);
	if (frequency == 0)
		return -EINVAL;

	buf[0] = priv->i2c_props.addr;

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

	return 5;
}

static int simple_dvb_set_params(struct dvb_frontend *fe)
{
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	u32 delsys = c->delivery_system;
	u32 bw = c->bandwidth_hz;
	u32 freq = c->frequency;
	struct tuner_simple_priv *priv = fe->tuner_priv;
	u32 frequency;
	u32 prev_freq, prev_bw;
	int ret;
	u8 buf[5];

	if (priv->i2c_props.adap == NULL)
		return -EINVAL;

	prev_freq = priv->frequency;
	prev_bw   = priv->bandwidth;

	frequency = simple_dvb_configure(fe, buf+1, delsys, freq, bw);
	if (frequency == 0)
		return -EINVAL;

	buf[0] = priv->i2c_props.addr;

	priv->frequency = frequency;
	priv->bandwidth = bw;

	/* put analog demod in standby when tuning digital */
	if (fe->ops.analog_ops.standby)
		fe->ops.analog_ops.standby(fe);

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

	/* buf[0] contains the i2c address, but *
	 * we already have it in i2c_props.addr */
	ret = tuner_i2c_xfer_send(&priv->i2c_props, buf+1, 4);
	if (ret != 4)
		goto fail;

	return 0;
fail:
	/* calc_regs sets frequency and bandwidth. if we failed, unset them */
	priv->frequency = prev_freq;
	priv->bandwidth = prev_bw;

	return ret;
}

static int simple_init(struct dvb_frontend *fe)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;

	if (priv->i2c_props.adap == NULL)
		return -EINVAL;

	if (priv->tun->initdata) {
		int ret;

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

		ret = tuner_i2c_xfer_send(&priv->i2c_props,
					  priv->tun->initdata + 1,
					  priv->tun->initdata[0]);
		if (ret != priv->tun->initdata[0])
			return ret;
	}

	return 0;
}

static int simple_sleep(struct dvb_frontend *fe)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;

	if (priv->i2c_props.adap == NULL)
		return -EINVAL;

	if (priv->tun->sleepdata) {
		int ret;

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

		ret = tuner_i2c_xfer_send(&priv->i2c_props,
					  priv->tun->sleepdata + 1,
					  priv->tun->sleepdata[0]);
		if (ret != priv->tun->sleepdata[0])
			return ret;
	}

	return 0;
}

static void simple_release(struct dvb_frontend *fe)
{
	struct tuner_simple_priv *priv = fe->tuner_priv;

	mutex_lock(&tuner_simple_list_mutex);

	if (priv)
		hybrid_tuner_release_state(priv);

	mutex_unlock(&tuner_simple_list_mutex);

	fe->tuner_priv = NULL;
}

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

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

static const struct dvb_tuner_ops simple_tuner_ops = {
	.init              = simple_init,
	.sleep             = simple_sleep,
	.set_analog_params = simple_set_params,
	.set_params        = simple_dvb_set_params,
	.calc_regs         = simple_dvb_calc_regs,
	.release           = simple_release,
	.get_frequency     = simple_get_frequency,
	.get_bandwidth     = simple_get_bandwidth,
	.get_status        = simple_get_status,
	.get_rf_strength   = simple_get_rf_strength,
};

struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe,
					 struct i2c_adapter *i2c_adap,
					 u8 i2c_addr,
					 unsigned int type)
{
	struct tuner_simple_priv *priv = NULL;
	int instance;

	if (type >= tuner_count) {
		printk(KERN_WARNING "%s: invalid tuner type: %d (max: %d)\n",
		       __func__, type, tuner_count-1);
		return NULL;
	}

	/* If i2c_adap is set, check that the tuner is at the correct address.
	 * Otherwise, if i2c_adap is NULL, the tuner will be programmed directly
	 * by the digital demod via calc_regs.
	 */
	if (i2c_adap != NULL) {
		u8 b[1];
		struct i2c_msg msg = {
			.addr = i2c_addr, .flags = I2C_M_RD,
			.buf = b, .len = 1,
		};

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

		if (1 != i2c_transfer(i2c_adap, &msg, 1))
			printk(KERN_WARNING "tuner-simple %d-%04x: unable to probe %s, proceeding anyway.",
			       i2c_adapter_id(i2c_adap), i2c_addr,
			       tuners[type].name);

		if (fe->ops.i2c_gate_ctrl)
			fe->ops.i2c_gate_ctrl(fe, 0);
	}

	mutex_lock(&tuner_simple_list_mutex);

	instance = hybrid_tuner_request_state(struct tuner_simple_priv, priv,
					      hybrid_tuner_instance_list,
					      i2c_adap, i2c_addr,
					      "tuner-simple");
	switch (instance) {
	case 0:
		mutex_unlock(&tuner_simple_list_mutex);
		return NULL;
	case 1:
		fe->tuner_priv = priv;

		priv->type = type;
		priv->tun  = &tuners[type];
		priv->nr   = simple_devcount++;
		break;
	default:
		fe->tuner_priv = priv;
		break;
	}

	mutex_unlock(&tuner_simple_list_mutex);

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

	if (type != priv->type)
		tuner_warn("couldn't set type to %d. Using %d (%s) instead\n",
			    type, priv->type, priv->tun->name);
	else
		tuner_info("type set to %d (%s)\n",
			   priv->type, priv->tun->name);

	if ((debug) || ((atv_input[priv->nr] > 0) ||
			(dtv_input[priv->nr] > 0))) {
		if (0 == atv_input[priv->nr])
			tuner_info("tuner %d atv rf input will be autoselected\n",
				   priv->nr);
		else
			tuner_info("tuner %d atv rf input will be set to input %d (insmod option)\n",
				   priv->nr, atv_input[priv->nr]);
		if (0 == dtv_input[priv->nr])
			tuner_info("tuner %d dtv rf input will be autoselected\n",
				   priv->nr);
		else
			tuner_info("tuner %d dtv rf input will be set to input %d (insmod option)\n",
				   priv->nr, dtv_input[priv->nr]);
	}

	strlcpy(fe->ops.tuner_ops.info.name, priv->tun->name,
		sizeof(fe->ops.tuner_ops.info.name));

	return fe;
}
EXPORT_SYMBOL_GPL(simple_tuner_attach);

MODULE_DESCRIPTION("Simple 4-control-bytes style tuner driver");
MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
MODULE_LICENSE("GPL");