aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/saa7114.c
blob: b7ac0122f7291e45a736f30c9f8192b9eff2a1c4 (plain) (blame)
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
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
/* 
 * saa7114 - Philips SAA7114H video decoder driver version 0.0.1
 *
 * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
 *
 * Based on saa7111 driver by Dave Perks
 *
 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
 *
 * Slight changes for video timing and attachment output by
 * Wolfgang Scherr <scherr@net4you.net>
 *
 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
 *    - moved over to linux>=2.4.x i2c protocol (1/1/2003)
 *
 * 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 <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/major.h>

#include <linux/slab.h>

#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/sched.h>
#include <linux/types.h>

#include <linux/videodev.h>
#include <asm/uaccess.h>

MODULE_DESCRIPTION("Philips SAA7114H video decoder driver");
MODULE_AUTHOR("Maxim Yevtyushkin");
MODULE_LICENSE("GPL");

#include <linux/i2c.h>
#include <linux/i2c-dev.h>

#define I2C_NAME(x) (x)->name

#include <linux/video_decoder.h>

static int debug = 0;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");

#define dprintk(num, format, args...) \
	do { \
		if (debug >= num) \
			printk(format, ##args); \
	} while (0)

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

struct saa7114 {
	unsigned char reg[0xf0 * 2];

	int norm;
	int input;
	int enable;
	int bright;
	int contrast;
	int hue;
	int sat;
	int playback;
};

#define   I2C_SAA7114        0x42
#define   I2C_SAA7114A       0x40

#define   I2C_DELAY   10


//#define SAA_7114_NTSC_HSYNC_START       (-3)
//#define SAA_7114_NTSC_HSYNC_STOP        (-18)

#define SAA_7114_NTSC_HSYNC_START  (-17)
#define SAA_7114_NTSC_HSYNC_STOP   (-32)

//#define SAA_7114_NTSC_HOFFSET           (5)
#define SAA_7114_NTSC_HOFFSET		(6)
#define SAA_7114_NTSC_VOFFSET           (10)
#define SAA_7114_NTSC_WIDTH             (720)
#define SAA_7114_NTSC_HEIGHT            (250)

#define SAA_7114_SECAM_HSYNC_START      (-17)
#define SAA_7114_SECAM_HSYNC_STOP       (-32)

#define SAA_7114_SECAM_HOFFSET          (2)
#define SAA_7114_SECAM_VOFFSET          (10)
#define SAA_7114_SECAM_WIDTH            (720)
#define SAA_7114_SECAM_HEIGHT           (300)

#define SAA_7114_PAL_HSYNC_START        (-17)
#define SAA_7114_PAL_HSYNC_STOP         (-32)

#define SAA_7114_PAL_HOFFSET            (2)
#define SAA_7114_PAL_VOFFSET            (10)
#define SAA_7114_PAL_WIDTH              (720)
#define SAA_7114_PAL_HEIGHT             (300)



#define SAA_7114_VERTICAL_CHROMA_OFFSET         0	//0x50504040
#define SAA_7114_VERTICAL_LUMA_OFFSET           0

#define REG_ADDR(x) (((x) << 1) + 1)
#define LOBYTE(x) ((unsigned char)((x) & 0xff))
#define HIBYTE(x) ((unsigned char)(((x) >> 8) & 0xff))
#define LOWORD(x) ((unsigned short int)((x) & 0xffff))
#define HIWORD(x) ((unsigned short int)(((x) >> 16) & 0xffff))


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

static inline int
saa7114_write (struct i2c_client *client,
	       u8                 reg,
	       u8                 value)
{
	/*struct saa7114 *decoder = i2c_get_clientdata(client);*/

	/*decoder->reg[reg] = value;*/
	return i2c_smbus_write_byte_data(client, reg, value);
}

static int
saa7114_write_block (struct i2c_client *client,
		     const u8          *data,
		     unsigned int       len)
{
	int ret = -1;
	u8 reg;

	/* the saa7114 has an autoincrement function, use it if
	 * the adapter understands raw I2C */
	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		/* do raw I2C, not smbus compatible */
		/*struct saa7114 *decoder = i2c_get_clientdata(client);*/
		struct i2c_msg msg;
		u8 block_data[32];

		msg.addr = client->addr;
		msg.flags = 0;
		while (len >= 2) {
			msg.buf = (char *) block_data;
			msg.len = 0;
			block_data[msg.len++] = reg = data[0];
			do {
				block_data[msg.len++] =
				    /*decoder->reg[reg++] =*/ data[1];
				len -= 2;
				data += 2;
			} while (len >= 2 && data[0] == reg &&
				 msg.len < 32);
			if ((ret = i2c_transfer(client->adapter,
						&msg, 1)) < 0)
				break;
		}
	} else {
		/* do some slow I2C emulation kind of thing */
		while (len >= 2) {
			reg = *data++;
			if ((ret = saa7114_write(client, reg,
						 *data++)) < 0)
				break;
			len -= 2;
		}
	}

	return ret;
}

static inline int
saa7114_read (struct i2c_client *client,
	      u8                 reg)
{
	return i2c_smbus_read_byte_data(client, reg);
}

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

// initially set NTSC, composite


static const unsigned char init[] = {
	0x00, 0x00,		/* 00 - ID byte , chip version,
				 * read only */
	0x01, 0x08,		/* 01 - X,X,X,X, IDEL3 to IDEL0 -
				 * horizontal increment delay,
				 * recommended position */
	0x02, 0x00,		/* 02 - FUSE=3, GUDL=2, MODE=0 ;
				 * input control */
	0x03, 0x10,		/* 03 - HLNRS=0, VBSL=1, WPOFF=0,
				 * HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */
	0x04, 0x90,		/* 04 - GAI1=256 */
	0x05, 0x90,		/* 05 - GAI2=256 */
	0x06, SAA_7114_NTSC_HSYNC_START,	/* 06 - HSB: hsync start,
				 * depends on the video standard */
	0x07, SAA_7114_NTSC_HSYNC_STOP,	/* 07 - HSS: hsync stop, depends
				 *on the video standard */
	0x08, 0xb8,		/* 08 - AUFD=1, FSEL=1, EXFIL=0, VTRC=1,
				 * HPLL: free running in playback, locked
				 * in capture, VNOI=0 */
	0x09, 0x80,		/* 09 - BYPS=0, PREF=0, BPSS=0, VBLB=0,
				 * UPTCV=0, APER=1; depends from input */
	0x0a, 0x80,		/* 0a - BRIG=128 */
	0x0b, 0x44,		/* 0b - CONT=1.109 */
	0x0c, 0x40,		/* 0c - SATN=1.0 */
	0x0d, 0x00,		/* 0d - HUE=0 */
	0x0e, 0x84,		/* 0e - CDTO, CSTD2 to 0, DCVF, FCTC,
				 * CCOMB; depends from video standard */
	0x0f, 0x24,		/* 0f - ACGC,CGAIN6 to CGAIN0; depends
				 * from video standard */
	0x10, 0x03,		/* 10 - OFFU1 to 0, OFFV1 to 0, CHBW,
				 * LCBW2 to 0 */
	0x11, 0x59,		/* 11 - COLO, RTP1, HEDL1 to 0, RTP0,
				 * YDEL2 to 0 */
	0x12, 0xc9,		/* 12 - RT signal control RTSE13 to 10
				 * and 03 to 00 */
	0x13, 0x80,		/* 13 - RT/X port output control  */
	0x14, 0x00,		/* 14 - analog, ADC, compatibility control */
	0x15, 0x00,		/* 15 - VGATE start FID change  */
	0x16, 0xfe,		/* 16 - VGATE stop */
	0x17, 0x00,		/* 17 - Misc., VGATE MSBs */
	0x18, 0x40,		/* RAWG */
	0x19, 0x80,		/* RAWO */
	0x1a, 0x00,
	0x1b, 0x00,
	0x1c, 0x00,
	0x1d, 0x00,
	0x1e, 0x00,
	0x1f, 0x00,		/* status byte, read only */
	0x20, 0x00,		/* video decoder reserved part */
	0x21, 0x00,
	0x22, 0x00,
	0x23, 0x00,
	0x24, 0x00,
	0x25, 0x00,
	0x26, 0x00,
	0x27, 0x00,
	0x28, 0x00,
	0x29, 0x00,
	0x2a, 0x00,
	0x2b, 0x00,
	0x2c, 0x00,
	0x2d, 0x00,
	0x2e, 0x00,
	0x2f, 0x00,
	0x30, 0xbc,		/* audio clock generator */
	0x31, 0xdf,
	0x32, 0x02,
	0x33, 0x00,
	0x34, 0xcd,
	0x35, 0xcc,
	0x36, 0x3a,
	0x37, 0x00,
	0x38, 0x03,
	0x39, 0x10,
	0x3a, 0x00,
	0x3b, 0x00,
	0x3c, 0x00,
	0x3d, 0x00,
	0x3e, 0x00,
	0x3f, 0x00,
	0x40, 0x00,		/* VBI data slicer */
	0x41, 0xff,
	0x42, 0xff,
	0x43, 0xff,
	0x44, 0xff,
	0x45, 0xff,
	0x46, 0xff,
	0x47, 0xff,
	0x48, 0xff,
	0x49, 0xff,
	0x4a, 0xff,
	0x4b, 0xff,
	0x4c, 0xff,
	0x4d, 0xff,
	0x4e, 0xff,
	0x4f, 0xff,
	0x50, 0xff,
	0x51, 0xff,
	0x52, 0xff,
	0x53, 0xff,
	0x54, 0xff,
	0x55, 0xff,
	0x56, 0xff,
	0x57, 0xff,
	0x58, 0x40,		// framing code 
	0x59, 0x47,		// horizontal offset
	0x5a, 0x06,		// vertical offset
	0x5b, 0x83,		// field offset
	0x5c, 0x00,		// reserved
	0x5d, 0x3e,		// header and data
	0x5e, 0x00,		// sliced data
	0x5f, 0x00,		// reserved
	0x60, 0x00,		/* video decoder reserved part */
	0x61, 0x00,
	0x62, 0x00,
	0x63, 0x00,
	0x64, 0x00,
	0x65, 0x00,
	0x66, 0x00,
	0x67, 0x00,
	0x68, 0x00,
	0x69, 0x00,
	0x6a, 0x00,
	0x6b, 0x00,
	0x6c, 0x00,
	0x6d, 0x00,
	0x6e, 0x00,
	0x6f, 0x00,
	0x70, 0x00,		/* video decoder reserved part */
	0x71, 0x00,
	0x72, 0x00,
	0x73, 0x00,
	0x74, 0x00,
	0x75, 0x00,
	0x76, 0x00,
	0x77, 0x00,
	0x78, 0x00,
	0x79, 0x00,
	0x7a, 0x00,
	0x7b, 0x00,
	0x7c, 0x00,
	0x7d, 0x00,
	0x7e, 0x00,
	0x7f, 0x00,
	0x80, 0x00,		/* X-port, I-port and scaler */
	0x81, 0x00,
	0x82, 0x00,
	0x83, 0x00,
	0x84, 0xc5,
	0x85, 0x0d,		// hsync and vsync ? 
	0x86, 0x40,
	0x87, 0x01,
	0x88, 0x00,
	0x89, 0x00,
	0x8a, 0x00,
	0x8b, 0x00,
	0x8c, 0x00,
	0x8d, 0x00,
	0x8e, 0x00,
	0x8f, 0x00,
	0x90, 0x03,		/* Task A definition           */
	0x91, 0x08,
	0x92, 0x00,
	0x93, 0x40,
	0x94, 0x00,		// window settings
	0x95, 0x00,
	0x96, 0x00,
	0x97, 0x00,
	0x98, 0x00,
	0x99, 0x00,
	0x9a, 0x00,
	0x9b, 0x00,
	0x9c, 0x00,
	0x9d, 0x00,
	0x9e, 0x00,
	0x9f, 0x00,
	0xa0, 0x01,		/* horizontal integer prescaling ratio */
	0xa1, 0x00,		/* horizontal prescaler accumulation
				 * sequence length */
	0xa2, 0x00,		/* UV FIR filter, Y FIR filter, prescaler
				 * DC gain */
	0xa3, 0x00,
	0xa4, 0x80,		// luminance brightness
	0xa5, 0x40,		// luminance gain
	0xa6, 0x40,		// chrominance saturation
	0xa7, 0x00,
	0xa8, 0x00,		// horizontal luminance scaling increment
	0xa9, 0x04,
	0xaa, 0x00,		// horizontal luminance phase offset
	0xab, 0x00,
	0xac, 0x00,		// horizontal chrominance scaling increment
	0xad, 0x02,
	0xae, 0x00,		// horizontal chrominance phase offset
	0xaf, 0x00,
	0xb0, 0x00,		// vertical luminance scaling increment
	0xb1, 0x04,
	0xb2, 0x00,		// vertical chrominance scaling increment
	0xb3, 0x04,
	0xb4, 0x00,
	0xb5, 0x00,
	0xb6, 0x00,
	0xb7, 0x00,
	0xb8, 0x00,
	0xb9, 0x00,
	0xba, 0x00,
	0xbb, 0x00,
	0xbc, 0x00,
	0xbd, 0x00,
	0xbe, 0x00,
	0xbf, 0x00,
	0xc0, 0x02,		// Task B definition
	0xc1, 0x08,
	0xc2, 0x00,
	0xc3, 0x40,
	0xc4, 0x00,		// window settings
	0xc5, 0x00,
	0xc6, 0x00,
	0xc7, 0x00,
	0xc8, 0x00,
	0xc9, 0x00,
	0xca, 0x00,
	0xcb, 0x00,
	0xcc, 0x00,
	0xcd, 0x00,
	0xce, 0x00,
	0xcf, 0x00,
	0xd0, 0x01,		// horizontal integer prescaling ratio
	0xd1, 0x00,		// horizontal prescaler accumulation sequence length
	0xd2, 0x00,		// UV FIR filter, Y FIR filter, prescaler DC gain
	0xd3, 0x00,
	0xd4, 0x80,		// luminance brightness
	0xd5, 0x40,		// luminance gain
	0xd6, 0x40,		// chrominance saturation
	0xd7, 0x00,
	0xd8, 0x00,		// horizontal luminance scaling increment
	0xd9, 0x04,
	0xda, 0x00,		// horizontal luminance phase offset
	0xdb, 0x00,
	0xdc, 0x00,		// horizontal chrominance scaling increment 
	0xdd, 0x02,
	0xde, 0x00,		// horizontal chrominance phase offset
	0xdf, 0x00,
	0xe0, 0x00,		// vertical luminance scaling increment
	0xe1, 0x04,
	0xe2, 0x00,		// vertical chrominance scaling increment
	0xe3, 0x04,
	0xe4, 0x00,
	0xe5, 0x00,
	0xe6, 0x00,
	0xe7, 0x00,
	0xe8, 0x00,
	0xe9, 0x00,
	0xea, 0x00,
	0xeb, 0x00,
	0xec, 0x00,
	0xed, 0x00,
	0xee, 0x00,
	0xef, 0x00
};

static int
saa7114_command (struct i2c_client *client,
		 unsigned int       cmd,
		 void              *arg)
{
	struct saa7114 *decoder = i2c_get_clientdata(client);

	switch (cmd) {

	case 0:
		//dprintk(1, KERN_INFO "%s: writing init\n", I2C_NAME(client));
		//saa7114_write_block(client, init, sizeof(init));
		break;

	case DECODER_DUMP:
	{
		int i;

		dprintk(1, KERN_INFO "%s: decoder dump\n", I2C_NAME(client));

		for (i = 0; i < 32; i += 16) {
			int j;

			printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
			for (j = 0; j < 16; ++j) {
				printk(" %02x",
				       saa7114_read(client, i + j));
			}
			printk("\n");
		}
	}
		break;

	case DECODER_GET_CAPABILITIES:
	{
		struct video_decoder_capability *cap = arg;

		dprintk(1, KERN_DEBUG "%s: decoder get capabilities\n",
			I2C_NAME(client));

		cap->flags = VIDEO_DECODER_PAL |
			     VIDEO_DECODER_NTSC |
			     VIDEO_DECODER_AUTO |
			     VIDEO_DECODER_CCIR;
		cap->inputs = 8;
		cap->outputs = 1;
	}
		break;

	case DECODER_GET_STATUS:
	{
		int *iarg = arg;
		int status;
		int res;

		status = saa7114_read(client, 0x1f);

		dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
			status);
		res = 0;
		if ((status & (1 << 6)) == 0) {
			res |= DECODER_STATUS_GOOD;
		}
		switch (decoder->norm) {
		case VIDEO_MODE_NTSC:
			res |= DECODER_STATUS_NTSC;
			break;
		case VIDEO_MODE_PAL:
			res |= DECODER_STATUS_PAL;
			break;
		case VIDEO_MODE_SECAM:
			res |= DECODER_STATUS_SECAM;
			break;
		default:
		case VIDEO_MODE_AUTO:
			if ((status & (1 << 5)) != 0) {
				res |= DECODER_STATUS_NTSC;
			} else {
				res |= DECODER_STATUS_PAL;
			}
			break;
		}
		if ((status & (1 << 0)) != 0) {
			res |= DECODER_STATUS_COLOR;
		}
		*iarg = res;
	}
		break;

	case DECODER_SET_NORM:
	{
		int *iarg = arg;

		short int hoff = 0, voff = 0, w = 0, h = 0;

		dprintk(1, KERN_DEBUG "%s: decoder set norm ",
			I2C_NAME(client));
		switch (*iarg) {

		case VIDEO_MODE_NTSC:
			dprintk(1, "NTSC\n");
			decoder->reg[REG_ADDR(0x06)] =
			    SAA_7114_NTSC_HSYNC_START;
			decoder->reg[REG_ADDR(0x07)] =
			    SAA_7114_NTSC_HSYNC_STOP;

			decoder->reg[REG_ADDR(0x08)] = decoder->playback ? 0x7c : 0xb8;	// PLL free when playback, PLL close when capture

			decoder->reg[REG_ADDR(0x0e)] = 0x85;
			decoder->reg[REG_ADDR(0x0f)] = 0x24;

			hoff = SAA_7114_NTSC_HOFFSET;
			voff = SAA_7114_NTSC_VOFFSET;
			w = SAA_7114_NTSC_WIDTH;
			h = SAA_7114_NTSC_HEIGHT;

			break;

		case VIDEO_MODE_PAL:
			dprintk(1, "PAL\n");
			decoder->reg[REG_ADDR(0x06)] =
			    SAA_7114_PAL_HSYNC_START;
			decoder->reg[REG_ADDR(0x07)] =
			    SAA_7114_PAL_HSYNC_STOP;

			decoder->reg[REG_ADDR(0x08)] = decoder->playback ? 0x7c : 0xb8;	// PLL free when playback, PLL close when capture

			decoder->reg[REG_ADDR(0x0e)] = 0x81;
			decoder->reg[REG_ADDR(0x0f)] = 0x24;

			hoff = SAA_7114_PAL_HOFFSET;
			voff = SAA_7114_PAL_VOFFSET;
			w = SAA_7114_PAL_WIDTH;
			h = SAA_7114_PAL_HEIGHT;

			break;

		default:
			dprintk(1, " Unknown video mode!!!\n");
			return -EINVAL;

		}


		decoder->reg[REG_ADDR(0x94)] = LOBYTE(hoff);	// hoffset low
		decoder->reg[REG_ADDR(0x95)] = HIBYTE(hoff) & 0x0f;	// hoffset high
		decoder->reg[REG_ADDR(0x96)] = LOBYTE(w);	// width low
		decoder->reg[REG_ADDR(0x97)] = HIBYTE(w) & 0x0f;	// width high
		decoder->reg[REG_ADDR(0x98)] = LOBYTE(voff);	// voffset low
		decoder->reg[REG_ADDR(0x99)] = HIBYTE(voff) & 0x0f;	// voffset high
		decoder->reg[REG_ADDR(0x9a)] = LOBYTE(h + 2);	// height low
		decoder->reg[REG_ADDR(0x9b)] = HIBYTE(h + 2) & 0x0f;	// height high
		decoder->reg[REG_ADDR(0x9c)] = LOBYTE(w);	// out width low
		decoder->reg[REG_ADDR(0x9d)] = HIBYTE(w) & 0x0f;	// out width high
		decoder->reg[REG_ADDR(0x9e)] = LOBYTE(h);	// out height low
		decoder->reg[REG_ADDR(0x9f)] = HIBYTE(h) & 0x0f;	// out height high

		decoder->reg[REG_ADDR(0xc4)] = LOBYTE(hoff);	// hoffset low
		decoder->reg[REG_ADDR(0xc5)] = HIBYTE(hoff) & 0x0f;	// hoffset high
		decoder->reg[REG_ADDR(0xc6)] = LOBYTE(w);	// width low
		decoder->reg[REG_ADDR(0xc7)] = HIBYTE(w) & 0x0f;	// width high
		decoder->reg[REG_ADDR(0xc8)] = LOBYTE(voff);	// voffset low
		decoder->reg[REG_ADDR(0xc9)] = HIBYTE(voff) & 0x0f;	// voffset high
		decoder->reg[REG_ADDR(0xca)] = LOBYTE(h + 2);	// height low
		decoder->reg[REG_ADDR(0xcb)] = HIBYTE(h + 2) & 0x0f;	// height high
		decoder->reg[REG_ADDR(0xcc)] = LOBYTE(w);	// out width low
		decoder->reg[REG_ADDR(0xcd)] = HIBYTE(w) & 0x0f;	// out width high
		decoder->reg[REG_ADDR(0xce)] = LOBYTE(h);	// out height low
		decoder->reg[REG_ADDR(0xcf)] = HIBYTE(h) & 0x0f;	// out height high


		saa7114_write(client, 0x80, 0x06);	// i-port and scaler back end clock selection, task A&B off
		saa7114_write(client, 0x88, 0xd8);	// sw reset scaler
		saa7114_write(client, 0x88, 0xf8);	// sw reset scaler release

		saa7114_write_block(client, decoder->reg + (0x06 << 1),
				    3 << 1);
		saa7114_write_block(client, decoder->reg + (0x0e << 1),
				    2 << 1);
		saa7114_write_block(client, decoder->reg + (0x5a << 1),
				    2 << 1);

		saa7114_write_block(client, decoder->reg + (0x94 << 1),
				    (0x9f + 1 - 0x94) << 1);
		saa7114_write_block(client, decoder->reg + (0xc4 << 1),
				    (0xcf + 1 - 0xc4) << 1);

		saa7114_write(client, 0x88, 0xd8);	// sw reset scaler
		saa7114_write(client, 0x88, 0xf8);	// sw reset scaler release
		saa7114_write(client, 0x80, 0x36);	// i-port and scaler back end clock selection

		decoder->norm = *iarg;
	}
		break;

	case DECODER_SET_INPUT:
	{
		int *iarg = arg;

		dprintk(1, KERN_DEBUG "%s: decoder set input (%d)\n",
			I2C_NAME(client), *iarg);
		if (*iarg < 0 || *iarg > 7) {
			return -EINVAL;
		}

		if (decoder->input != *iarg) {
			dprintk(1, KERN_DEBUG "%s: now setting %s input\n",
				I2C_NAME(client),
				*iarg >= 6 ? "S-Video" : "Composite");
			decoder->input = *iarg;

			/* select mode */
			decoder->reg[REG_ADDR(0x02)] =
			    (decoder->
			     reg[REG_ADDR(0x02)] & 0xf0) | (decoder->
							    input <
							    6 ? 0x0 : 0x9);
			saa7114_write(client, 0x02,
				      decoder->reg[REG_ADDR(0x02)]);

			/* bypass chrominance trap for modes 6..9 */
			decoder->reg[REG_ADDR(0x09)] =
			    (decoder->
			     reg[REG_ADDR(0x09)] & 0x7f) | (decoder->
							    input <
							    6 ? 0x0 :
							    0x80);
			saa7114_write(client, 0x09,
				      decoder->reg[REG_ADDR(0x09)]);

			decoder->reg[REG_ADDR(0x0e)] =
			    decoder->input <
			    6 ? decoder->
			    reg[REG_ADDR(0x0e)] | 1 : decoder->
			    reg[REG_ADDR(0x0e)] & ~1;
			saa7114_write(client, 0x0e,
				      decoder->reg[REG_ADDR(0x0e)]);
		}
	}
		break;

	case DECODER_SET_OUTPUT:
	{
		int *iarg = arg;

		dprintk(1, KERN_DEBUG "%s: decoder set output\n",
			I2C_NAME(client));

		/* not much choice of outputs */
		if (*iarg != 0) {
			return -EINVAL;
		}
	}
		break;

	case DECODER_ENABLE_OUTPUT:
	{
		int *iarg = arg;
		int enable = (*iarg != 0);

		dprintk(1, KERN_DEBUG "%s: decoder %s output\n",
			I2C_NAME(client), enable ? "enable" : "disable");

		decoder->playback = !enable;

		if (decoder->enable != enable) {
			decoder->enable = enable;

			/* RJ: If output should be disabled (for
			 * playing videos), we also need a open PLL.
			 * The input is set to 0 (where no input
			 * source is connected), although this
			 * is not necessary.
			 *
			 * If output should be enabled, we have to
			 * reverse the above.
			 */

			if (decoder->enable) {
				decoder->reg[REG_ADDR(0x08)] = 0xb8;
				decoder->reg[REG_ADDR(0x12)] = 0xc9;
				decoder->reg[REG_ADDR(0x13)] = 0x80;
				decoder->reg[REG_ADDR(0x87)] = 0x01;
			} else {
				decoder->reg[REG_ADDR(0x08)] = 0x7c;
				decoder->reg[REG_ADDR(0x12)] = 0x00;
				decoder->reg[REG_ADDR(0x13)] = 0x00;
				decoder->reg[REG_ADDR(0x87)] = 0x00;
			}

			saa7114_write_block(client,
					    decoder->reg + (0x12 << 1),
					    2 << 1);
			saa7114_write(client, 0x08,
				      decoder->reg[REG_ADDR(0x08)]);
			saa7114_write(client, 0x87,
				      decoder->reg[REG_ADDR(0x87)]);
			saa7114_write(client, 0x88, 0xd8);	// sw reset scaler
			saa7114_write(client, 0x88, 0xf8);	// sw reset scaler release            
			saa7114_write(client, 0x80, 0x36);

		}
	}
		break;

	case DECODER_SET_PICTURE:
	{
		struct video_picture *pic = arg;

		dprintk(1,
			KERN_DEBUG
			"%s: decoder set picture bright=%d contrast=%d saturation=%d hue=%d\n",
			I2C_NAME(client), pic->brightness, pic->contrast,
			pic->colour, pic->hue);

		if (decoder->bright != pic->brightness) {
			/* We want 0 to 255 we get 0-65535 */
			decoder->bright = pic->brightness;
			saa7114_write(client, 0x0a, decoder->bright >> 8);
		}
		if (decoder->contrast != pic->contrast) {
			/* We want 0 to 127 we get 0-65535 */
			decoder->contrast = pic->contrast;
			saa7114_write(client, 0x0b,
				      decoder->contrast >> 9);
		}
		if (decoder->sat != pic->colour) {
			/* We want 0 to 127 we get 0-65535 */
			decoder->sat = pic->colour;
			saa7114_write(client, 0x0c, decoder->sat >> 9);
		}
		if (decoder->hue != pic->hue) {
			/* We want -128 to 127 we get 0-65535 */
			decoder->hue = pic->hue;
			saa7114_write(client, 0x0d,
				      (decoder->hue - 32768) >> 8);
		}
	}
		break;

	default:
		return -EINVAL;
	}

	return 0;
}

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

/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */
static unsigned short normal_i2c[] =
    { I2C_SAA7114 >> 1, I2C_SAA7114A >> 1, I2C_CLIENT_END };

static unsigned short ignore = I2C_CLIENT_END;
                                                                                
static struct i2c_client_address_data addr_data = {
	.normal_i2c		= normal_i2c,
	.probe			= &ignore,
	.ignore			= &ignore,
};

static struct i2c_driver i2c_driver_saa7114;

static int
saa7114_detect_client (struct i2c_adapter *adapter,
		       int                 address,
		       int                 kind)
{
	int i, err[30];
	short int hoff = SAA_7114_NTSC_HOFFSET;
	short int voff = SAA_7114_NTSC_VOFFSET;
	short int w = SAA_7114_NTSC_WIDTH;
	short int h = SAA_7114_NTSC_HEIGHT;
	struct i2c_client *client;
	struct saa7114 *decoder;

	dprintk(1,
		KERN_INFO
		"saa7114.c: detecting saa7114 client on address 0x%x\n",
		address << 1);

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return 0;

	client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
	if (client == 0)
		return -ENOMEM;
	memset(client, 0, sizeof(struct i2c_client));
	client->addr = address;
	client->adapter = adapter;
	client->driver = &i2c_driver_saa7114;
	strlcpy(I2C_NAME(client), "saa7114", sizeof(I2C_NAME(client)));

	decoder = kmalloc(sizeof(struct saa7114), GFP_KERNEL);
	if (decoder == NULL) {
		kfree(client);
		return -ENOMEM;
	}
	memset(decoder, 0, sizeof(struct saa7114));
	decoder->norm = VIDEO_MODE_NTSC;
	decoder->input = -1;
	decoder->enable = 1;
	decoder->bright = 32768;
	decoder->contrast = 32768;
	decoder->hue = 32768;
	decoder->sat = 32768;
	decoder->playback = 0;	// initially capture mode useda
	i2c_set_clientdata(client, decoder);

	memcpy(decoder->reg, init, sizeof(init));

	decoder->reg[REG_ADDR(0x94)] = LOBYTE(hoff);	// hoffset low
	decoder->reg[REG_ADDR(0x95)] = HIBYTE(hoff) & 0x0f;	// hoffset high
	decoder->reg[REG_ADDR(0x96)] = LOBYTE(w);	// width low
	decoder->reg[REG_ADDR(0x97)] = HIBYTE(w) & 0x0f;	// width high
	decoder->reg[REG_ADDR(0x98)] = LOBYTE(voff);	// voffset low
	decoder->reg[REG_ADDR(0x99)] = HIBYTE(voff) & 0x0f;	// voffset high
	decoder->reg[REG_ADDR(0x9a)] = LOBYTE(h + 2);	// height low
	decoder->reg[REG_ADDR(0x9b)] = HIBYTE(h + 2) & 0x0f;	// height high
	decoder->reg[REG_ADDR(0x9c)] = LOBYTE(w);	// out width low
	decoder->reg[REG_ADDR(0x9d)] = HIBYTE(w) & 0x0f;	// out width high
	decoder->reg[REG_ADDR(0x9e)] = LOBYTE(h);	// out height low
	decoder->reg[REG_ADDR(0x9f)] = HIBYTE(h) & 0x0f;	// out height high

	decoder->reg[REG_ADDR(0xc4)] = LOBYTE(hoff);	// hoffset low
	decoder->reg[REG_ADDR(0xc5)] = HIBYTE(hoff) & 0x0f;	// hoffset high
	decoder->reg[REG_ADDR(0xc6)] = LOBYTE(w);	// width low
	decoder->reg[REG_ADDR(0xc7)] = HIBYTE(w) & 0x0f;	// width high
	decoder->reg[REG_ADDR(0xc8)] = LOBYTE(voff);	// voffset low
	decoder->reg[REG_ADDR(0xc9)] = HIBYTE(voff) & 0x0f;	// voffset high
	decoder->reg[REG_ADDR(0xca)] = LOBYTE(h + 2);	// height low
	decoder->reg[REG_ADDR(0xcb)] = HIBYTE(h + 2) & 0x0f;	// height high
	decoder->reg[REG_ADDR(0xcc)] = LOBYTE(w);	// out width low
	decoder->reg[REG_ADDR(0xcd)] = HIBYTE(w) & 0x0f;	// out width high
	decoder->reg[REG_ADDR(0xce)] = LOBYTE(h);	// out height low
	decoder->reg[REG_ADDR(0xcf)] = HIBYTE(h) & 0x0f;	// out height high

	decoder->reg[REG_ADDR(0xb8)] =
	    LOBYTE(LOWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
	decoder->reg[REG_ADDR(0xb9)] =
	    HIBYTE(LOWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
	decoder->reg[REG_ADDR(0xba)] =
	    LOBYTE(HIWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
	decoder->reg[REG_ADDR(0xbb)] =
	    HIBYTE(HIWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));

	decoder->reg[REG_ADDR(0xbc)] =
	    LOBYTE(LOWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
	decoder->reg[REG_ADDR(0xbd)] =
	    HIBYTE(LOWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
	decoder->reg[REG_ADDR(0xbe)] =
	    LOBYTE(HIWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
	decoder->reg[REG_ADDR(0xbf)] =
	    HIBYTE(HIWORD(SAA_7114_VERTICAL_LUMA_OFFSET));

	decoder->reg[REG_ADDR(0xe8)] =
	    LOBYTE(LOWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
	decoder->reg[REG_ADDR(0xe9)] =
	    HIBYTE(LOWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
	decoder->reg[REG_ADDR(0xea)] =
	    LOBYTE(HIWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));
	decoder->reg[REG_ADDR(0xeb)] =
	    HIBYTE(HIWORD(SAA_7114_VERTICAL_CHROMA_OFFSET));

	decoder->reg[REG_ADDR(0xec)] =
	    LOBYTE(LOWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
	decoder->reg[REG_ADDR(0xed)] =
	    HIBYTE(LOWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
	decoder->reg[REG_ADDR(0xee)] =
	    LOBYTE(HIWORD(SAA_7114_VERTICAL_LUMA_OFFSET));
	decoder->reg[REG_ADDR(0xef)] =
	    HIBYTE(HIWORD(SAA_7114_VERTICAL_LUMA_OFFSET));


	decoder->reg[REG_ADDR(0x13)] = 0x80;	// RTC0 on
	decoder->reg[REG_ADDR(0x87)] = 0x01;	// I-Port
	decoder->reg[REG_ADDR(0x12)] = 0xc9;	// RTS0

	decoder->reg[REG_ADDR(0x02)] = 0xc0;	// set composite1 input, aveasy
	decoder->reg[REG_ADDR(0x09)] = 0x00;	// chrominance trap
	decoder->reg[REG_ADDR(0x0e)] |= 1;	// combfilter on


	dprintk(1, KERN_DEBUG "%s_attach: starting decoder init\n",
		I2C_NAME(client));

	err[0] =
	    saa7114_write_block(client, decoder->reg + (0x20 << 1),
				0x10 << 1);
	err[1] =
	    saa7114_write_block(client, decoder->reg + (0x30 << 1),
				0x10 << 1);
	err[2] =
	    saa7114_write_block(client, decoder->reg + (0x63 << 1),
				(0x7f + 1 - 0x63) << 1);
	err[3] =
	    saa7114_write_block(client, decoder->reg + (0x89 << 1),
				6 << 1);
	err[4] =
	    saa7114_write_block(client, decoder->reg + (0xb8 << 1),
				8 << 1);
	err[5] =
	    saa7114_write_block(client, decoder->reg + (0xe8 << 1),
				8 << 1);


	for (i = 0; i <= 5; i++) {
		if (err[i] < 0) {
			dprintk(1,
				KERN_ERR
				"%s_attach: init error %d at stage %d, leaving attach.\n",
				I2C_NAME(client), i, err[i]);
			kfree(decoder);
			kfree(client);
			return 0;
		}
	}

	for (i = 6; i < 8; i++) {
		dprintk(1,
			KERN_DEBUG
			"%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
			I2C_NAME(client), i, saa7114_read(client, i),
			decoder->reg[REG_ADDR(i)]);
	}

	dprintk(1,
		KERN_DEBUG
		"%s_attach: performing decoder reset sequence\n",
		I2C_NAME(client));

	err[6] = saa7114_write(client, 0x80, 0x06);	// i-port and scaler backend clock selection, task A&B off
	err[7] = saa7114_write(client, 0x88, 0xd8);	// sw reset scaler
	err[8] = saa7114_write(client, 0x88, 0xf8);	// sw reset scaler release

	for (i = 6; i <= 8; i++) {
		if (err[i] < 0) {
			dprintk(1,
				KERN_ERR
				"%s_attach: init error %d at stage %d, leaving attach.\n",
				I2C_NAME(client), i, err[i]);
			kfree(decoder);
			kfree(client);
			return 0;
		}
	}

	dprintk(1, KERN_INFO "%s_attach: performing the rest of init\n",
		I2C_NAME(client));


	err[9] = saa7114_write(client, 0x01, decoder->reg[REG_ADDR(0x01)]);
	err[10] = saa7114_write_block(client, decoder->reg + (0x03 << 1), (0x1e + 1 - 0x03) << 1);	// big seq
	err[11] = saa7114_write_block(client, decoder->reg + (0x40 << 1), (0x5f + 1 - 0x40) << 1);	// slicer
	err[12] = saa7114_write_block(client, decoder->reg + (0x81 << 1), 2 << 1);	// ?
	err[13] = saa7114_write_block(client, decoder->reg + (0x83 << 1), 5 << 1);	// ?
	err[14] = saa7114_write_block(client, decoder->reg + (0x90 << 1), 4 << 1);	// Task A
	err[15] =
	    saa7114_write_block(client, decoder->reg + (0x94 << 1),
				12 << 1);
	err[16] =
	    saa7114_write_block(client, decoder->reg + (0xa0 << 1),
				8 << 1);
	err[17] =
	    saa7114_write_block(client, decoder->reg + (0xa8 << 1),
				8 << 1);
	err[18] =
	    saa7114_write_block(client, decoder->reg + (0xb0 << 1),
				8 << 1);
	err[19] = saa7114_write_block(client, decoder->reg + (0xc0 << 1), 4 << 1);	// Task B
	err[15] =
	    saa7114_write_block(client, decoder->reg + (0xc4 << 1),
				12 << 1);
	err[16] =
	    saa7114_write_block(client, decoder->reg + (0xd0 << 1),
				8 << 1);
	err[17] =
	    saa7114_write_block(client, decoder->reg + (0xd8 << 1),
				8 << 1);
	err[18] =
	    saa7114_write_block(client, decoder->reg + (0xe0 << 1),
				8 << 1);

	for (i = 9; i <= 18; i++) {
		if (err[i] < 0) {
			dprintk(1,
				KERN_ERR
				"%s_attach: init error %d at stage %d, leaving attach.\n",
				I2C_NAME(client), i, err[i]);
			kfree(decoder);
			kfree(client);
			return 0;
		}
	}


	for (i = 6; i < 8; i++) {
		dprintk(1,
			KERN_DEBUG
			"%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
			I2C_NAME(client), i, saa7114_read(client, i),
			decoder->reg[REG_ADDR(i)]);
	}


	for (i = 0x11; i <= 0x13; i++) {
		dprintk(1,
			KERN_DEBUG
			"%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
			I2C_NAME(client), i, saa7114_read(client, i),
			decoder->reg[REG_ADDR(i)]);
	}


	dprintk(1, KERN_DEBUG "%s_attach: setting video input\n",
		I2C_NAME(client));

	err[19] =
	    saa7114_write(client, 0x02, decoder->reg[REG_ADDR(0x02)]);
	err[20] =
	    saa7114_write(client, 0x09, decoder->reg[REG_ADDR(0x09)]);
	err[21] =
	    saa7114_write(client, 0x0e, decoder->reg[REG_ADDR(0x0e)]);

	for (i = 19; i <= 21; i++) {
		if (err[i] < 0) {
			dprintk(1,
				KERN_ERR
				"%s_attach: init error %d at stage %d, leaving attach.\n",
				I2C_NAME(client), i, err[i]);
			kfree(decoder);
			kfree(client);
			return 0;
		}
	}

	dprintk(1,
		KERN_DEBUG
		"%s_attach: performing decoder reset sequence\n",
		I2C_NAME(client));

	err[22] = saa7114_write(client, 0x88, 0xd8);	// sw reset scaler
	err[23] = saa7114_write(client, 0x88, 0xf8);	// sw reset scaler release
	err[24] = saa7114_write(client, 0x80, 0x36);	// i-port and scaler backend clock selection, task A&B off


	for (i = 22; i <= 24; i++) {
		if (err[i] < 0) {
			dprintk(1,
				KERN_ERR
				"%s_attach: init error %d at stage %d, leaving attach.\n",
				I2C_NAME(client), i, err[i]);
			kfree(decoder);
			kfree(client);
			return 0;
		}
	}

	err[25] = saa7114_write(client, 0x06, init[REG_ADDR(0x06)]);
	err[26] = saa7114_write(client, 0x07, init[REG_ADDR(0x07)]);
	err[27] = saa7114_write(client, 0x10, init[REG_ADDR(0x10)]);

	dprintk(1,
		KERN_INFO
		"%s_attach: chip version %x, decoder status 0x%02x\n",
		I2C_NAME(client), saa7114_read(client, 0x00) >> 4,
		saa7114_read(client, 0x1f));
	dprintk(1,
		KERN_DEBUG
		"%s_attach: power save control: 0x%02x, scaler status: 0x%02x\n",
		I2C_NAME(client), saa7114_read(client, 0x88),
		saa7114_read(client, 0x8f));


	for (i = 0x94; i < 0x96; i++) {
		dprintk(1,
			KERN_DEBUG
			"%s_attach: reg[0x%02x] = 0x%02x (0x%02x)\n",
			I2C_NAME(client), i, saa7114_read(client, i),
			decoder->reg[REG_ADDR(i)]);
	}

	i = i2c_attach_client(client);
	if (i) {
		kfree(client);
		kfree(decoder);
		return i;
	}

	//i = saa7114_write_block(client, init, sizeof(init));
	i = 0;
	if (i < 0) {
		dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
			I2C_NAME(client), i);
	} else {
		dprintk(1,
			KERN_INFO
			"%s_attach: chip version %x at address 0x%x\n",
			I2C_NAME(client), saa7114_read(client, 0x00) >> 4,
			client->addr << 1);
	}

	return 0;
}

static int
saa7114_attach_adapter (struct i2c_adapter *adapter)
{
	dprintk(1,
		KERN_INFO
		"saa7114.c: starting probe for adapter %s (0x%x)\n",
		I2C_NAME(adapter), adapter->id);
	return i2c_probe(adapter, &addr_data, &saa7114_detect_client);
}

static int
saa7114_detach_client (struct i2c_client *client)
{
	struct saa7114 *decoder = i2c_get_clientdata(client);
	int err;

	err = i2c_detach_client(client);
	if (err) {
		return err;
	}

	kfree(decoder);
	kfree(client);

	return 0;
}

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

static struct i2c_driver i2c_driver_saa7114 = {
	.driver = {
		.name = "saa7114",
	},

	.id = I2C_DRIVERID_SAA7114,

	.attach_adapter = saa7114_attach_adapter,
	.detach_client = saa7114_detach_client,
	.command = saa7114_command,
};

static int __init
saa7114_init (void)
{
	return i2c_add_driver(&i2c_driver_saa7114);
}

static void __exit
saa7114_exit (void)
{
	i2c_del_driver(&i2c_driver_saa7114);
}

module_init(saa7114_init);
module_exit(saa7114_exit);