summaryrefslogtreecommitdiffstats
path: root/drivers/media/firewire/firedtv-avc.c
blob: 251a556112a99586288f680e018103c0b9eef90c (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
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
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
/*
 * FireDTV driver (formerly known as FireSAT)
 *
 * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
 * Copyright (C) 2008 Ben Backx <ben@bbackx.com>
 * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
 *
 *	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.
 */

#include <linux/bug.h>
#include <linux/crc32.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <linux/string.h>
#include <linux/stringify.h>
#include <linux/wait.h>
#include <linux/workqueue.h>

#include <dvb_frontend.h>

#include "firedtv.h"

#define FCP_COMMAND_REGISTER		0xfffff0000b00ULL

#define AVC_CTYPE_CONTROL		0x0
#define AVC_CTYPE_STATUS		0x1
#define AVC_CTYPE_NOTIFY		0x3

#define AVC_RESPONSE_ACCEPTED		0x9
#define AVC_RESPONSE_STABLE		0xc
#define AVC_RESPONSE_CHANGED		0xd
#define AVC_RESPONSE_INTERIM		0xf

#define AVC_SUBUNIT_TYPE_TUNER		(0x05 << 3)
#define AVC_SUBUNIT_TYPE_UNIT		(0x1f << 3)

#define AVC_OPCODE_VENDOR		0x00
#define AVC_OPCODE_READ_DESCRIPTOR	0x09
#define AVC_OPCODE_DSIT			0xc8
#define AVC_OPCODE_DSD			0xcb

#define DESCRIPTOR_TUNER_STATUS 	0x80
#define DESCRIPTOR_SUBUNIT_IDENTIFIER	0x00

#define SFE_VENDOR_DE_COMPANYID_0	0x00 /* OUI of Digital Everywhere */
#define SFE_VENDOR_DE_COMPANYID_1	0x12
#define SFE_VENDOR_DE_COMPANYID_2	0x87

#define SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL 0x0a
#define SFE_VENDOR_OPCODE_LNB_CONTROL		0x52
#define SFE_VENDOR_OPCODE_TUNE_QPSK		0x58 /* for DVB-S */

#define SFE_VENDOR_OPCODE_GET_FIRMWARE_VERSION	0x00
#define SFE_VENDOR_OPCODE_HOST2CA		0x56
#define SFE_VENDOR_OPCODE_CA2HOST		0x57
#define SFE_VENDOR_OPCODE_CISTATUS		0x59
#define SFE_VENDOR_OPCODE_TUNE_QPSK2		0x60 /* for DVB-S2 */

#define SFE_VENDOR_TAG_CA_RESET			0x00
#define SFE_VENDOR_TAG_CA_APPLICATION_INFO	0x01
#define SFE_VENDOR_TAG_CA_PMT			0x02
#define SFE_VENDOR_TAG_CA_DATE_TIME		0x04
#define SFE_VENDOR_TAG_CA_MMI			0x05
#define SFE_VENDOR_TAG_CA_ENTER_MENU		0x07

#define EN50221_LIST_MANAGEMENT_ONLY	0x03
#define EN50221_TAG_APP_INFO		0x9f8021
#define EN50221_TAG_CA_INFO		0x9f8031

struct avc_command_frame {
	u8 ctype;
	u8 subunit;
	u8 opcode;
	u8 operand[509];
};

struct avc_response_frame {
	u8 response;
	u8 subunit;
	u8 opcode;
	u8 operand[509];
};

#define LAST_OPERAND (509 - 1)

static inline void clear_operands(struct avc_command_frame *c, int from, int to)
{
	memset(&c->operand[from], 0, to - from + 1);
}

static void pad_operands(struct avc_command_frame *c, int from)
{
	int to = ALIGN(from, 4);

	if (from <= to && to <= LAST_OPERAND)
		clear_operands(c, from, to);
}

#define AVC_DEBUG_READ_DESCRIPTOR              0x0001
#define AVC_DEBUG_DSIT                         0x0002
#define AVC_DEBUG_DSD                          0x0004
#define AVC_DEBUG_REGISTER_REMOTE_CONTROL      0x0008
#define AVC_DEBUG_LNB_CONTROL                  0x0010
#define AVC_DEBUG_TUNE_QPSK                    0x0020
#define AVC_DEBUG_TUNE_QPSK2                   0x0040
#define AVC_DEBUG_HOST2CA                      0x0080
#define AVC_DEBUG_CA2HOST                      0x0100
#define AVC_DEBUG_APPLICATION_PMT              0x4000
#define AVC_DEBUG_FCP_PAYLOADS                 0x8000

static int avc_debug;
module_param_named(debug, avc_debug, int, 0644);
MODULE_PARM_DESC(debug, "Verbose logging (none = 0"
	", FCP subactions"
	": READ DESCRIPTOR = "		__stringify(AVC_DEBUG_READ_DESCRIPTOR)
	", DSIT = "			__stringify(AVC_DEBUG_DSIT)
	", REGISTER_REMOTE_CONTROL = "	__stringify(AVC_DEBUG_REGISTER_REMOTE_CONTROL)
	", LNB CONTROL = "		__stringify(AVC_DEBUG_LNB_CONTROL)
	", TUNE QPSK = "		__stringify(AVC_DEBUG_TUNE_QPSK)
	", TUNE QPSK2 = "		__stringify(AVC_DEBUG_TUNE_QPSK2)
	", HOST2CA = "			__stringify(AVC_DEBUG_HOST2CA)
	", CA2HOST = "			__stringify(AVC_DEBUG_CA2HOST)
	"; Application sent PMT = "	__stringify(AVC_DEBUG_APPLICATION_PMT)
	", FCP payloads = "		__stringify(AVC_DEBUG_FCP_PAYLOADS)
	", or a combination, or all = -1)");

/*
 * This is a workaround since there is no vendor specific command to retrieve
 * ca_info using AVC. If this parameter is not used, ca_system_id will be
 * filled with application_manufacturer from ca_app_info.
 * Digital Everywhere have said that adding ca_info is on their TODO list.
 */
static unsigned int num_fake_ca_system_ids;
static int fake_ca_system_ids[4] = { -1, -1, -1, -1 };
module_param_array(fake_ca_system_ids, int, &num_fake_ca_system_ids, 0644);
MODULE_PARM_DESC(fake_ca_system_ids, "If your CAM application manufacturer "
		 "does not have the same ca_system_id as your CAS, you can "
		 "override what ca_system_ids are presented to the "
		 "application by setting this field to an array of ids.");

static const char *debug_fcp_ctype(unsigned int ctype)
{
	static const char *ctypes[] = {
		[0x0] = "CONTROL",		[0x1] = "STATUS",
		[0x2] = "SPECIFIC INQUIRY",	[0x3] = "NOTIFY",
		[0x4] = "GENERAL INQUIRY",	[0x8] = "NOT IMPLEMENTED",
		[0x9] = "ACCEPTED",		[0xa] = "REJECTED",
		[0xb] = "IN TRANSITION",	[0xc] = "IMPLEMENTED/STABLE",
		[0xd] = "CHANGED",		[0xf] = "INTERIM",
	};
	const char *ret = ctype < ARRAY_SIZE(ctypes) ? ctypes[ctype] : NULL;

	return ret ? ret : "?";
}

static const char *debug_fcp_opcode(unsigned int opcode,
				    const u8 *data, int length)
{
	switch (opcode) {
	case AVC_OPCODE_VENDOR:
		break;
	case AVC_OPCODE_READ_DESCRIPTOR:
		return avc_debug & AVC_DEBUG_READ_DESCRIPTOR ?
				"ReadDescriptor" : NULL;
	case AVC_OPCODE_DSIT:
		return avc_debug & AVC_DEBUG_DSIT ?
				"DirectSelectInfo.Type" : NULL;
	case AVC_OPCODE_DSD:
		return avc_debug & AVC_DEBUG_DSD ? "DirectSelectData" : NULL;
	default:
		return "Unknown";
	}

	if (length < 7 ||
	    data[3] != SFE_VENDOR_DE_COMPANYID_0 ||
	    data[4] != SFE_VENDOR_DE_COMPANYID_1 ||
	    data[5] != SFE_VENDOR_DE_COMPANYID_2)
		return "Vendor/Unknown";

	switch (data[6]) {
	case SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL:
		return avc_debug & AVC_DEBUG_REGISTER_REMOTE_CONTROL ?
				"RegisterRC" : NULL;
	case SFE_VENDOR_OPCODE_LNB_CONTROL:
		return avc_debug & AVC_DEBUG_LNB_CONTROL ? "LNBControl" : NULL;
	case SFE_VENDOR_OPCODE_TUNE_QPSK:
		return avc_debug & AVC_DEBUG_TUNE_QPSK ? "TuneQPSK" : NULL;
	case SFE_VENDOR_OPCODE_TUNE_QPSK2:
		return avc_debug & AVC_DEBUG_TUNE_QPSK2 ? "TuneQPSK2" : NULL;
	case SFE_VENDOR_OPCODE_HOST2CA:
		return avc_debug & AVC_DEBUG_HOST2CA ? "Host2CA" : NULL;
	case SFE_VENDOR_OPCODE_CA2HOST:
		return avc_debug & AVC_DEBUG_CA2HOST ? "CA2Host" : NULL;
	}
	return "Vendor/Unknown";
}

static void debug_fcp(const u8 *data, int length)
{
	unsigned int subunit_type, subunit_id, opcode;
	const char *op, *prefix;

	prefix       = data[0] > 7 ? "FCP <- " : "FCP -> ";
	subunit_type = data[1] >> 3;
	subunit_id   = data[1] & 7;
	opcode       = subunit_type == 0x1e || subunit_id == 5 ? ~0 : data[2];
	op           = debug_fcp_opcode(opcode, data, length);

	if (op) {
		printk(KERN_INFO "%ssu=%x.%x l=%d: %-8s - %s\n",
		       prefix, subunit_type, subunit_id, length,
		       debug_fcp_ctype(data[0]), op);
		if (avc_debug & AVC_DEBUG_FCP_PAYLOADS)
			print_hex_dump(KERN_INFO, prefix, DUMP_PREFIX_NONE,
				       16, 1, data, length, false);
	}
}

static void debug_pmt(char *msg, int length)
{
	printk(KERN_INFO "APP PMT -> l=%d\n", length);
	print_hex_dump(KERN_INFO, "APP PMT -> ", DUMP_PREFIX_NONE,
		       16, 1, msg, length, false);
}

static int avc_write(struct firedtv *fdtv)
{
	int err, retry;

	fdtv->avc_reply_received = false;

	for (retry = 0; retry < 6; retry++) {
		if (unlikely(avc_debug))
			debug_fcp(fdtv->avc_data, fdtv->avc_data_length);

		err = fdtv_write(fdtv, FCP_COMMAND_REGISTER,
				 fdtv->avc_data, fdtv->avc_data_length);
		if (err) {
			dev_err(fdtv->device, "FCP command write failed\n");

			return err;
		}

		/*
		 * AV/C specs say that answers should be sent within 150 ms.
		 * Time out after 200 ms.
		 */
		if (wait_event_timeout(fdtv->avc_wait,
				       fdtv->avc_reply_received,
				       msecs_to_jiffies(200)) != 0)
			return 0;
	}
	dev_err(fdtv->device, "FCP response timed out\n");

	return -ETIMEDOUT;
}

static bool is_register_rc(struct avc_response_frame *r)
{
	return r->opcode     == AVC_OPCODE_VENDOR &&
	       r->operand[0] == SFE_VENDOR_DE_COMPANYID_0 &&
	       r->operand[1] == SFE_VENDOR_DE_COMPANYID_1 &&
	       r->operand[2] == SFE_VENDOR_DE_COMPANYID_2 &&
	       r->operand[3] == SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL;
}

int avc_recv(struct firedtv *fdtv, void *data, size_t length)
{
	struct avc_response_frame *r = data;

	if (unlikely(avc_debug))
		debug_fcp(data, length);

	if (length >= 8 && is_register_rc(r)) {
		switch (r->response) {
		case AVC_RESPONSE_CHANGED:
			fdtv_handle_rc(fdtv, r->operand[4] << 8 | r->operand[5]);
			schedule_work(&fdtv->remote_ctrl_work);
			break;
		case AVC_RESPONSE_INTERIM:
			if (is_register_rc((void *)fdtv->avc_data))
				goto wake;
			break;
		default:
			dev_info(fdtv->device,
				 "remote control result = %d\n", r->response);
		}
		return 0;
	}

	if (fdtv->avc_reply_received) {
		dev_err(fdtv->device, "out-of-order AVC response, ignored\n");
		return -EIO;
	}

	memcpy(fdtv->avc_data, data, length);
	fdtv->avc_data_length = length;
wake:
	fdtv->avc_reply_received = true;
	wake_up(&fdtv->avc_wait);

	return 0;
}

static int add_pid_filter(struct firedtv *fdtv, u8 *operand)
{
	int i, n, pos = 1;

	for (i = 0, n = 0; i < 16; i++) {
		if (test_bit(i, &fdtv->channel_active)) {
			operand[pos++] = 0x13; /* flowfunction relay */
			operand[pos++] = 0x80; /* dsd_sel_spec_valid_flags -> PID */
			operand[pos++] = (fdtv->channel_pid[i] >> 8) & 0x1f;
			operand[pos++] = fdtv->channel_pid[i] & 0xff;
			operand[pos++] = 0x00; /* tableID */
			operand[pos++] = 0x00; /* filter_length */
			n++;
		}
	}
	operand[0] = n;

	return pos;
}

/*
 * tuning command for setting the relative LNB frequency
 * (not supported by the AVC standard)
 */
static int avc_tuner_tuneqpsk(struct firedtv *fdtv,
			      struct dtv_frontend_properties *p)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;

	c->opcode = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	if (fdtv->type == FIREDTV_DVB_S2)
		c->operand[3] = SFE_VENDOR_OPCODE_TUNE_QPSK2;
	else
		c->operand[3] = SFE_VENDOR_OPCODE_TUNE_QPSK;

	c->operand[4] = (p->frequency >> 24) & 0xff;
	c->operand[5] = (p->frequency >> 16) & 0xff;
	c->operand[6] = (p->frequency >> 8) & 0xff;
	c->operand[7] = p->frequency & 0xff;

	c->operand[8] = ((p->symbol_rate / 1000) >> 8) & 0xff;
	c->operand[9] = (p->symbol_rate / 1000) & 0xff;

	switch (p->fec_inner) {
	case FEC_1_2:	c->operand[10] = 0x1; break;
	case FEC_2_3:	c->operand[10] = 0x2; break;
	case FEC_3_4:	c->operand[10] = 0x3; break;
	case FEC_5_6:	c->operand[10] = 0x4; break;
	case FEC_7_8:	c->operand[10] = 0x5; break;
	case FEC_4_5:
	case FEC_8_9:
	case FEC_AUTO:
	default:	c->operand[10] = 0x0;
	}

	if (fdtv->voltage == 0xff)
		c->operand[11] = 0xff;
	else if (fdtv->voltage == SEC_VOLTAGE_18) /* polarisation */
		c->operand[11] = 0;
	else
		c->operand[11] = 1;

	if (fdtv->tone == 0xff)
		c->operand[12] = 0xff;
	else if (fdtv->tone == SEC_TONE_ON) /* band */
		c->operand[12] = 1;
	else
		c->operand[12] = 0;

	if (fdtv->type == FIREDTV_DVB_S2) {
		if (fdtv->fe.dtv_property_cache.delivery_system == SYS_DVBS2) {
			switch (fdtv->fe.dtv_property_cache.modulation) {
			case QAM_16:		c->operand[13] = 0x1; break;
			case QPSK:		c->operand[13] = 0x2; break;
			case PSK_8:		c->operand[13] = 0x3; break;
			default:		c->operand[13] = 0x2; break;
			}
			switch (fdtv->fe.dtv_property_cache.rolloff) {
			case ROLLOFF_35:	c->operand[14] = 0x2; break;
			case ROLLOFF_20:	c->operand[14] = 0x0; break;
			case ROLLOFF_25:	c->operand[14] = 0x1; break;
			case ROLLOFF_AUTO:
			default:		c->operand[14] = 0x2; break;
			/* case ROLLOFF_NONE:	c->operand[14] = 0xff; break; */
			}
			switch (fdtv->fe.dtv_property_cache.pilot) {
			case PILOT_AUTO:	c->operand[15] = 0x0; break;
			case PILOT_OFF:		c->operand[15] = 0x0; break;
			case PILOT_ON:		c->operand[15] = 0x1; break;
			}
		} else {
			c->operand[13] = 0x1;  /* auto modulation */
			c->operand[14] = 0xff; /* disable rolloff */
			c->operand[15] = 0xff; /* disable pilot */
		}
		return 16;
	} else {
		return 13;
	}
}

static int avc_tuner_dsd_dvb_c(struct firedtv *fdtv,
			       struct dtv_frontend_properties *p)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;

	c->opcode = AVC_OPCODE_DSD;

	c->operand[0] = 0;    /* source plug */
	c->operand[1] = 0xd2; /* subfunction replace */
	c->operand[2] = 0x20; /* system id = DVB */
	c->operand[3] = 0x00; /* antenna number */
	c->operand[4] = 0x11; /* system_specific_multiplex selection_length */

	/* multiplex_valid_flags, high byte */
	c->operand[5] =   0 << 7 /* reserved */
			| 0 << 6 /* Polarisation */
			| 0 << 5 /* Orbital_Pos */
			| 1 << 4 /* Frequency */
			| 1 << 3 /* Symbol_Rate */
			| 0 << 2 /* FEC_outer */
			| (p->fec_inner  != FEC_AUTO ? 1 << 1 : 0)
			| (p->modulation != QAM_AUTO ? 1 << 0 : 0);

	/* multiplex_valid_flags, low byte */
	c->operand[6] =   0 << 7 /* NetworkID */
			| 0 << 0 /* reserved */ ;

	c->operand[7]  = 0x00;
	c->operand[8]  = 0x00;
	c->operand[9]  = 0x00;
	c->operand[10] = 0x00;

	c->operand[11] = (((p->frequency / 4000) >> 16) & 0xff) | (2 << 6);
	c->operand[12] = ((p->frequency / 4000) >> 8) & 0xff;
	c->operand[13] = (p->frequency / 4000) & 0xff;
	c->operand[14] = ((p->symbol_rate / 1000) >> 12) & 0xff;
	c->operand[15] = ((p->symbol_rate / 1000) >> 4) & 0xff;
	c->operand[16] = ((p->symbol_rate / 1000) << 4) & 0xf0;
	c->operand[17] = 0x00;

	switch (p->fec_inner) {
	case FEC_1_2:	c->operand[18] = 0x1; break;
	case FEC_2_3:	c->operand[18] = 0x2; break;
	case FEC_3_4:	c->operand[18] = 0x3; break;
	case FEC_5_6:	c->operand[18] = 0x4; break;
	case FEC_7_8:	c->operand[18] = 0x5; break;
	case FEC_8_9:	c->operand[18] = 0x6; break;
	case FEC_4_5:	c->operand[18] = 0x8; break;
	case FEC_AUTO:
	default:	c->operand[18] = 0x0;
	}

	switch (p->modulation) {
	case QAM_16:	c->operand[19] = 0x08; break;
	case QAM_32:	c->operand[19] = 0x10; break;
	case QAM_64:	c->operand[19] = 0x18; break;
	case QAM_128:	c->operand[19] = 0x20; break;
	case QAM_256:	c->operand[19] = 0x28; break;
	case QAM_AUTO:
	default:	c->operand[19] = 0x00;
	}

	c->operand[20] = 0x00;
	c->operand[21] = 0x00;

	return 22 + add_pid_filter(fdtv, &c->operand[22]);
}

static int avc_tuner_dsd_dvb_t(struct firedtv *fdtv,
			       struct dtv_frontend_properties *p)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;

	c->opcode = AVC_OPCODE_DSD;

	c->operand[0] = 0;    /* source plug */
	c->operand[1] = 0xd2; /* subfunction replace */
	c->operand[2] = 0x20; /* system id = DVB */
	c->operand[3] = 0x00; /* antenna number */
	c->operand[4] = 0x0c; /* system_specific_multiplex selection_length */

	/* multiplex_valid_flags, high byte */
	c->operand[5] =
	      0 << 7 /* reserved */
	    | 1 << 6 /* CenterFrequency */
	    | (p->bandwidth_hz != 0        ? 1 << 5 : 0)
	    | (p->modulation  != QAM_AUTO              ? 1 << 4 : 0)
	    | (p->hierarchy != HIERARCHY_AUTO ? 1 << 3 : 0)
	    | (p->code_rate_HP   != FEC_AUTO              ? 1 << 2 : 0)
	    | (p->code_rate_LP   != FEC_AUTO              ? 1 << 1 : 0)
	    | (p->guard_interval != GUARD_INTERVAL_AUTO   ? 1 << 0 : 0);

	/* multiplex_valid_flags, low byte */
	c->operand[6] =
	      0 << 7 /* NetworkID */
	    | (p->transmission_mode != TRANSMISSION_MODE_AUTO ? 1 << 6 : 0)
	    | 0 << 5 /* OtherFrequencyFlag */
	    | 0 << 0 /* reserved */ ;

	c->operand[7]  = 0x0;
	c->operand[8]  = (p->frequency / 10) >> 24;
	c->operand[9]  = ((p->frequency / 10) >> 16) & 0xff;
	c->operand[10] = ((p->frequency / 10) >>  8) & 0xff;
	c->operand[11] = (p->frequency / 10) & 0xff;

	switch (p->bandwidth_hz) {
	case 7000000:	c->operand[12] = 0x20; break;
	case 8000000:
	case 6000000:	/* not defined by AVC spec */
	case 0:
	default:		c->operand[12] = 0x00;
	}

	switch (p->modulation) {
	case QAM_16:	c->operand[13] = 1 << 6; break;
	case QAM_64:	c->operand[13] = 2 << 6; break;
	case QPSK:
	default:	c->operand[13] = 0x00;
	}

	switch (p->hierarchy) {
	case HIERARCHY_1:	c->operand[13] |= 1 << 3; break;
	case HIERARCHY_2:	c->operand[13] |= 2 << 3; break;
	case HIERARCHY_4:	c->operand[13] |= 3 << 3; break;
	case HIERARCHY_AUTO:
	case HIERARCHY_NONE:
	default:		break;
	}

	switch (p->code_rate_HP) {
	case FEC_2_3:	c->operand[13] |= 1; break;
	case FEC_3_4:	c->operand[13] |= 2; break;
	case FEC_5_6:	c->operand[13] |= 3; break;
	case FEC_7_8:	c->operand[13] |= 4; break;
	case FEC_1_2:
	default:	break;
	}

	switch (p->code_rate_LP) {
	case FEC_2_3:	c->operand[14] = 1 << 5; break;
	case FEC_3_4:	c->operand[14] = 2 << 5; break;
	case FEC_5_6:	c->operand[14] = 3 << 5; break;
	case FEC_7_8:	c->operand[14] = 4 << 5; break;
	case FEC_1_2:
	default:	c->operand[14] = 0x00; break;
	}

	switch (p->guard_interval) {
	case GUARD_INTERVAL_1_16:	c->operand[14] |= 1 << 3; break;
	case GUARD_INTERVAL_1_8:	c->operand[14] |= 2 << 3; break;
	case GUARD_INTERVAL_1_4:	c->operand[14] |= 3 << 3; break;
	case GUARD_INTERVAL_1_32:
	case GUARD_INTERVAL_AUTO:
	default:			break;
	}

	switch (p->transmission_mode) {
	case TRANSMISSION_MODE_8K:	c->operand[14] |= 1 << 1; break;
	case TRANSMISSION_MODE_2K:
	case TRANSMISSION_MODE_AUTO:
	default:			break;
	}

	c->operand[15] = 0x00; /* network_ID[0] */
	c->operand[16] = 0x00; /* network_ID[1] */

	return 17 + add_pid_filter(fdtv, &c->operand[17]);
}

int avc_tuner_dsd(struct firedtv *fdtv,
		  struct dtv_frontend_properties *p)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	int pos, ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;

	switch (fdtv->type) {
	case FIREDTV_DVB_S:
	case FIREDTV_DVB_S2: pos = avc_tuner_tuneqpsk(fdtv, p); break;
	case FIREDTV_DVB_C: pos = avc_tuner_dsd_dvb_c(fdtv, p); break;
	case FIREDTV_DVB_T: pos = avc_tuner_dsd_dvb_t(fdtv, p); break;
	default:
		BUG();
	}
	pad_operands(c, pos);

	fdtv->avc_data_length = ALIGN(3 + pos, 4);
	ret = avc_write(fdtv);
#if 0
	/*
	 * FIXME:
	 * u8 *status was an out-parameter of avc_tuner_dsd, unused by caller.
	 * Check for AVC_RESPONSE_ACCEPTED here instead?
	 */
	if (status)
		*status = r->operand[2];
#endif
	mutex_unlock(&fdtv->avc_mutex);

	if (ret == 0)
		msleep(500);

	return ret;
}

int avc_tuner_set_pids(struct firedtv *fdtv, unsigned char pidc, u16 pid[])
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	int ret, pos, k;

	if (pidc > 16 && pidc != 0xff)
		return -EINVAL;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_DSD;

	c->operand[0] = 0;	/* source plug */
	c->operand[1] = 0xd2;	/* subfunction replace */
	c->operand[2] = 0x20;	/* system id = DVB */
	c->operand[3] = 0x00;	/* antenna number */
	c->operand[4] = 0x00;	/* system_specific_multiplex selection_length */
	c->operand[5] = pidc;	/* Nr_of_dsd_sel_specs */

	pos = 6;
	if (pidc != 0xff)
		for (k = 0; k < pidc; k++) {
			c->operand[pos++] = 0x13; /* flowfunction relay */
			c->operand[pos++] = 0x80; /* dsd_sel_spec_valid_flags -> PID */
			c->operand[pos++] = (pid[k] >> 8) & 0x1f;
			c->operand[pos++] = pid[k] & 0xff;
			c->operand[pos++] = 0x00; /* tableID */
			c->operand[pos++] = 0x00; /* filter_length */
		}
	pad_operands(c, pos);

	fdtv->avc_data_length = ALIGN(3 + pos, 4);
	ret = avc_write(fdtv);

	/* FIXME: check response code? */

	mutex_unlock(&fdtv->avc_mutex);

	if (ret == 0)
		msleep(50);

	return ret;
}

int avc_tuner_get_ts(struct firedtv *fdtv)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	int ret, sl;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_DSIT;

	sl = fdtv->type == FIREDTV_DVB_T ? 0x0c : 0x11;

	c->operand[0] = 0;	/* source plug */
	c->operand[1] = 0xd2;	/* subfunction replace */
	c->operand[2] = 0xff;	/* status */
	c->operand[3] = 0x20;	/* system id = DVB */
	c->operand[4] = 0x00;	/* antenna number */
	c->operand[5] = 0x0; 	/* system_specific_search_flags */
	c->operand[6] = sl;	/* system_specific_multiplex selection_length */
	/*
	 * operand[7]: valid_flags[0]
	 * operand[8]: valid_flags[1]
	 * operand[7 + sl]: nr_of_dsit_sel_specs (always 0)
	 */
	clear_operands(c, 7, 24);

	fdtv->avc_data_length = fdtv->type == FIREDTV_DVB_T ? 24 : 28;
	ret = avc_write(fdtv);

	/* FIXME: check response code? */

	mutex_unlock(&fdtv->avc_mutex);

	if (ret == 0)
		msleep(250);

	return ret;
}

int avc_identify_subunit(struct firedtv *fdtv)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	struct avc_response_frame *r = (void *)fdtv->avc_data;
	int ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_READ_DESCRIPTOR;

	c->operand[0] = DESCRIPTOR_SUBUNIT_IDENTIFIER;
	c->operand[1] = 0xff;
	c->operand[2] = 0x00;
	c->operand[3] = 0x00; /* length highbyte */
	c->operand[4] = 0x08; /* length lowbyte  */
	c->operand[5] = 0x00; /* offset highbyte */
	c->operand[6] = 0x0d; /* offset lowbyte  */
	clear_operands(c, 7, 8); /* padding */

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);
	if (ret < 0)
		goto out;

	if ((r->response != AVC_RESPONSE_STABLE &&
	     r->response != AVC_RESPONSE_ACCEPTED) ||
	    (r->operand[3] << 8) + r->operand[4] != 8) {
		dev_err(fdtv->device, "cannot read subunit identifier\n");
		ret = -EINVAL;
	}
out:
	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

#define SIZEOF_ANTENNA_INPUT_INFO 22

int avc_tuner_status(struct firedtv *fdtv, struct firedtv_tuner_status *stat)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	struct avc_response_frame *r = (void *)fdtv->avc_data;
	int length, ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_READ_DESCRIPTOR;

	c->operand[0] = DESCRIPTOR_TUNER_STATUS;
	c->operand[1] = 0xff;	/* read_result_status */
	/*
	 * operand[2]: reserved
	 * operand[3]: SIZEOF_ANTENNA_INPUT_INFO >> 8
	 * operand[4]: SIZEOF_ANTENNA_INPUT_INFO & 0xff
	 */
	clear_operands(c, 2, 31);

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);
	if (ret < 0)
		goto out;

	if (r->response != AVC_RESPONSE_STABLE &&
	    r->response != AVC_RESPONSE_ACCEPTED) {
		dev_err(fdtv->device, "cannot read tuner status\n");
		ret = -EINVAL;
		goto out;
	}

	length = r->operand[9];
	if (r->operand[1] != 0x10 || length != SIZEOF_ANTENNA_INPUT_INFO) {
		dev_err(fdtv->device, "got invalid tuner status\n");
		ret = -EINVAL;
		goto out;
	}

	stat->active_system		= r->operand[10];
	stat->searching			= r->operand[11] >> 7 & 1;
	stat->moving			= r->operand[11] >> 6 & 1;
	stat->no_rf			= r->operand[11] >> 5 & 1;
	stat->input			= r->operand[12] >> 7 & 1;
	stat->selected_antenna		= r->operand[12] & 0x7f;
	stat->ber			= r->operand[13] << 24 |
					  r->operand[14] << 16 |
					  r->operand[15] << 8 |
					  r->operand[16];
	stat->signal_strength		= r->operand[17];
	stat->raster_frequency		= r->operand[18] >> 6 & 2;
	stat->rf_frequency		= (r->operand[18] & 0x3f) << 16 |
					  r->operand[19] << 8 |
					  r->operand[20];
	stat->man_dep_info_length	= r->operand[21];
	stat->front_end_error		= r->operand[22] >> 4 & 1;
	stat->antenna_error		= r->operand[22] >> 3 & 1;
	stat->front_end_power_status	= r->operand[22] >> 1 & 1;
	stat->power_supply		= r->operand[22] & 1;
	stat->carrier_noise_ratio	= r->operand[23] << 8 |
					  r->operand[24];
	stat->power_supply_voltage	= r->operand[27];
	stat->antenna_voltage		= r->operand[28];
	stat->firewire_bus_voltage	= r->operand[29];
	stat->ca_mmi			= r->operand[30] & 1;
	stat->ca_pmt_reply		= r->operand[31] >> 7 & 1;
	stat->ca_date_time_request	= r->operand[31] >> 6 & 1;
	stat->ca_application_info	= r->operand[31] >> 5 & 1;
	stat->ca_module_present_status	= r->operand[31] >> 4 & 1;
	stat->ca_dvb_flag		= r->operand[31] >> 3 & 1;
	stat->ca_error_flag		= r->operand[31] >> 2 & 1;
	stat->ca_initialization_status	= r->operand[31] >> 1 & 1;
out:
	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

int avc_lnb_control(struct firedtv *fdtv, char voltage, char burst,
		    char conttone, char nrdiseq,
		    struct dvb_diseqc_master_cmd *diseqcmd)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	struct avc_response_frame *r = (void *)fdtv->avc_data;
	int pos, j, k, ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_LNB_CONTROL;
	c->operand[4] = voltage;
	c->operand[5] = nrdiseq;

	pos = 6;
	for (j = 0; j < nrdiseq; j++) {
		c->operand[pos++] = diseqcmd[j].msg_len;

		for (k = 0; k < diseqcmd[j].msg_len; k++)
			c->operand[pos++] = diseqcmd[j].msg[k];
	}
	c->operand[pos++] = burst;
	c->operand[pos++] = conttone;
	pad_operands(c, pos);

	fdtv->avc_data_length = ALIGN(3 + pos, 4);
	ret = avc_write(fdtv);
	if (ret < 0)
		goto out;

	if (r->response != AVC_RESPONSE_ACCEPTED) {
		dev_err(fdtv->device, "LNB control failed\n");
		ret = -EINVAL;
	}
out:
	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

int avc_register_remote_control(struct firedtv *fdtv)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	int ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_NOTIFY;
	c->subunit = AVC_SUBUNIT_TYPE_UNIT | 7;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL;
	c->operand[4] = 0; /* padding */

	fdtv->avc_data_length = 8;
	ret = avc_write(fdtv);

	/* FIXME: check response code? */

	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

void avc_remote_ctrl_work(struct work_struct *work)
{
	struct firedtv *fdtv =
			container_of(work, struct firedtv, remote_ctrl_work);

	/* Should it be rescheduled in failure cases? */
	avc_register_remote_control(fdtv);
}

#if 0 /* FIXME: unused */
int avc_tuner_host2ca(struct firedtv *fdtv)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	int ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_HOST2CA;
	c->operand[4] = 0; /* slot */
	c->operand[5] = SFE_VENDOR_TAG_CA_APPLICATION_INFO; /* ca tag */
	clear_operands(c, 6, 8);

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);

	/* FIXME: check response code? */

	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}
#endif

static int get_ca_object_pos(struct avc_response_frame *r)
{
	int length = 1;

	/* Check length of length field */
	if (r->operand[7] & 0x80)
		length = (r->operand[7] & 0x7f) + 1;
	return length + 7;
}

static int get_ca_object_length(struct avc_response_frame *r)
{
#if 0 /* FIXME: unused */
	int size = 0;
	int i;

	if (r->operand[7] & 0x80)
		for (i = 0; i < (r->operand[7] & 0x7f); i++) {
			size <<= 8;
			size += r->operand[8 + i];
		}
#endif
	return r->operand[7];
}

int avc_ca_app_info(struct firedtv *fdtv, char *app_info, unsigned int *len)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	struct avc_response_frame *r = (void *)fdtv->avc_data;
	int pos, ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_STATUS;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_CA2HOST;
	c->operand[4] = 0; /* slot */
	c->operand[5] = SFE_VENDOR_TAG_CA_APPLICATION_INFO; /* ca tag */
	clear_operands(c, 6, LAST_OPERAND);

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);
	if (ret < 0)
		goto out;

	/* FIXME: check response code and validate response data */

	pos = get_ca_object_pos(r);
	app_info[0] = (EN50221_TAG_APP_INFO >> 16) & 0xff;
	app_info[1] = (EN50221_TAG_APP_INFO >>  8) & 0xff;
	app_info[2] = (EN50221_TAG_APP_INFO >>  0) & 0xff;
	app_info[3] = 6 + r->operand[pos + 4];
	app_info[4] = 0x01;
	memcpy(&app_info[5], &r->operand[pos], 5 + r->operand[pos + 4]);
	*len = app_info[3] + 4;
out:
	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

int avc_ca_info(struct firedtv *fdtv, char *app_info, unsigned int *len)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	struct avc_response_frame *r = (void *)fdtv->avc_data;
	int i, pos, ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_STATUS;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_CA2HOST;
	c->operand[4] = 0; /* slot */
	c->operand[5] = SFE_VENDOR_TAG_CA_APPLICATION_INFO; /* ca tag */
	clear_operands(c, 6, LAST_OPERAND);

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);
	if (ret < 0)
		goto out;

	/* FIXME: check response code and validate response data */

	pos = get_ca_object_pos(r);
	app_info[0] = (EN50221_TAG_CA_INFO >> 16) & 0xff;
	app_info[1] = (EN50221_TAG_CA_INFO >>  8) & 0xff;
	app_info[2] = (EN50221_TAG_CA_INFO >>  0) & 0xff;
	if (num_fake_ca_system_ids == 0) {
		app_info[3] = 2;
		app_info[4] = r->operand[pos + 0];
		app_info[5] = r->operand[pos + 1];
	} else {
		app_info[3] = num_fake_ca_system_ids * 2;
		for (i = 0; i < num_fake_ca_system_ids; i++) {
			app_info[4 + i * 2] =
				(fake_ca_system_ids[i] >> 8) & 0xff;
			app_info[5 + i * 2] = fake_ca_system_ids[i] & 0xff;
		}
	}
	*len = app_info[3] + 4;
out:
	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

int avc_ca_reset(struct firedtv *fdtv)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	int ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_HOST2CA;
	c->operand[4] = 0; /* slot */
	c->operand[5] = SFE_VENDOR_TAG_CA_RESET; /* ca tag */
	c->operand[6] = 0; /* more/last */
	c->operand[7] = 1; /* length */
	c->operand[8] = 0; /* force hardware reset */

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);

	/* FIXME: check response code? */

	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

int avc_ca_pmt(struct firedtv *fdtv, char *msg, int length)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	struct avc_response_frame *r = (void *)fdtv->avc_data;
	int list_management;
	int program_info_length;
	int pmt_cmd_id;
	int read_pos;
	int write_pos;
	int es_info_length;
	int crc32_csum;
	int ret;

	if (unlikely(avc_debug & AVC_DEBUG_APPLICATION_PMT))
		debug_pmt(msg, length);

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_CONTROL;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	if (msg[0] != EN50221_LIST_MANAGEMENT_ONLY) {
		dev_info(fdtv->device, "forcing list_management to ONLY\n");
		msg[0] = EN50221_LIST_MANAGEMENT_ONLY;
	}
	/* We take the cmd_id from the programme level only! */
	list_management = msg[0];
	program_info_length = ((msg[4] & 0x0f) << 8) + msg[5];
	if (program_info_length > 0)
		program_info_length--; /* Remove pmt_cmd_id */
	pmt_cmd_id = msg[6];

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_HOST2CA;
	c->operand[4] = 0; /* slot */
	c->operand[5] = SFE_VENDOR_TAG_CA_PMT; /* ca tag */
	c->operand[6] = 0; /* more/last */
	/* Use three bytes for length field in case length > 127 */
	c->operand[10] = list_management;
	c->operand[11] = 0x01; /* pmt_cmd=OK_descramble */

	/* TS program map table */

	c->operand[12] = 0x02; /* Table id=2 */
	c->operand[13] = 0x80; /* Section syntax + length */

	c->operand[15] = msg[1]; /* Program number */
	c->operand[16] = msg[2];
	c->operand[17] = msg[3]; /* Version number and current/next */
	c->operand[18] = 0x00; /* Section number=0 */
	c->operand[19] = 0x00; /* Last section number=0 */
	c->operand[20] = 0x1f; /* PCR_PID=1FFF */
	c->operand[21] = 0xff;
	c->operand[22] = (program_info_length >> 8); /* Program info length */
	c->operand[23] = (program_info_length & 0xff);

	/* CA descriptors at programme level */
	read_pos = 6;
	write_pos = 24;
	if (program_info_length > 0) {
		pmt_cmd_id = msg[read_pos++];
		if (pmt_cmd_id != 1 && pmt_cmd_id != 4)
			dev_err(fdtv->device,
				"invalid pmt_cmd_id %d\n", pmt_cmd_id);
		if (program_info_length > sizeof(c->operand) - 4 - write_pos) {
			ret = -EINVAL;
			goto out;
		}

		memcpy(&c->operand[write_pos], &msg[read_pos],
		       program_info_length);
		read_pos += program_info_length;
		write_pos += program_info_length;
	}
	while (read_pos < length) {
		c->operand[write_pos++] = msg[read_pos++];
		c->operand[write_pos++] = msg[read_pos++];
		c->operand[write_pos++] = msg[read_pos++];
		es_info_length =
			((msg[read_pos] & 0x0f) << 8) + msg[read_pos + 1];
		read_pos += 2;
		if (es_info_length > 0)
			es_info_length--; /* Remove pmt_cmd_id */
		c->operand[write_pos++] = es_info_length >> 8;
		c->operand[write_pos++] = es_info_length & 0xff;
		if (es_info_length > 0) {
			pmt_cmd_id = msg[read_pos++];
			if (pmt_cmd_id != 1 && pmt_cmd_id != 4)
				dev_err(fdtv->device, "invalid pmt_cmd_id %d "
					"at stream level\n", pmt_cmd_id);

			if (es_info_length > sizeof(c->operand) - 4 -
					     write_pos) {
				ret = -EINVAL;
				goto out;
			}

			memcpy(&c->operand[write_pos], &msg[read_pos],
			       es_info_length);
			read_pos += es_info_length;
			write_pos += es_info_length;
		}
	}
	write_pos += 4; /* CRC */

	c->operand[7] = 0x82;
	c->operand[8] = (write_pos - 10) >> 8;
	c->operand[9] = (write_pos - 10) & 0xff;
	c->operand[14] = write_pos - 15;

	crc32_csum = crc32_be(0, &c->operand[10], c->operand[12] - 1);
	c->operand[write_pos - 4] = (crc32_csum >> 24) & 0xff;
	c->operand[write_pos - 3] = (crc32_csum >> 16) & 0xff;
	c->operand[write_pos - 2] = (crc32_csum >>  8) & 0xff;
	c->operand[write_pos - 1] = (crc32_csum >>  0) & 0xff;
	pad_operands(c, write_pos);

	fdtv->avc_data_length = ALIGN(3 + write_pos, 4);
	ret = avc_write(fdtv);
	if (ret < 0)
		goto out;

	if (r->response != AVC_RESPONSE_ACCEPTED) {
		dev_err(fdtv->device,
			"CA PMT failed with response 0x%x\n", r->response);
		ret = -EACCES;
	}
out:
	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

int avc_ca_get_time_date(struct firedtv *fdtv, int *interval)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	struct avc_response_frame *r = (void *)fdtv->avc_data;
	int ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_STATUS;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_CA2HOST;
	c->operand[4] = 0; /* slot */
	c->operand[5] = SFE_VENDOR_TAG_CA_DATE_TIME; /* ca tag */
	clear_operands(c, 6, LAST_OPERAND);

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);
	if (ret < 0)
		goto out;

	/* FIXME: check response code and validate response data */

	*interval = r->operand[get_ca_object_pos(r)];
out:
	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

int avc_ca_enter_menu(struct firedtv *fdtv)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	int ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_STATUS;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_HOST2CA;
	c->operand[4] = 0; /* slot */
	c->operand[5] = SFE_VENDOR_TAG_CA_ENTER_MENU;
	clear_operands(c, 6, 8);

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);

	/* FIXME: check response code? */

	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

int avc_ca_get_mmi(struct firedtv *fdtv, char *mmi_object, unsigned int *len)
{
	struct avc_command_frame *c = (void *)fdtv->avc_data;
	struct avc_response_frame *r = (void *)fdtv->avc_data;
	int ret;

	mutex_lock(&fdtv->avc_mutex);

	c->ctype   = AVC_CTYPE_STATUS;
	c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
	c->opcode  = AVC_OPCODE_VENDOR;

	c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
	c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
	c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
	c->operand[3] = SFE_VENDOR_OPCODE_CA2HOST;
	c->operand[4] = 0; /* slot */
	c->operand[5] = SFE_VENDOR_TAG_CA_MMI;
	clear_operands(c, 6, LAST_OPERAND);

	fdtv->avc_data_length = 12;
	ret = avc_write(fdtv);
	if (ret < 0)
		goto out;

	/* FIXME: check response code and validate response data */

	*len = get_ca_object_length(r);
	memcpy(mmi_object, &r->operand[get_ca_object_pos(r)], *len);
out:
	mutex_unlock(&fdtv->avc_mutex);

	return ret;
}

#define CMP_OUTPUT_PLUG_CONTROL_REG_0	0xfffff0000904ULL

static int cmp_read(struct firedtv *fdtv, u64 addr, __be32 *data)
{
	int ret;

	ret = fdtv_read(fdtv, addr, data);
	if (ret < 0)
		dev_err(fdtv->device, "CMP: read I/O error\n");

	return ret;
}

static int cmp_lock(struct firedtv *fdtv, u64 addr, __be32 data[])
{
	int ret;

	ret = fdtv_lock(fdtv, addr, data);
	if (ret < 0)
		dev_err(fdtv->device, "CMP: lock I/O error\n");

	return ret;
}

static inline u32 get_opcr(__be32 opcr, u32 mask, u32 shift)
{
	return (be32_to_cpu(opcr) >> shift) & mask;
}

static inline void set_opcr(__be32 *opcr, u32 value, u32 mask, u32 shift)
{
	*opcr &= ~cpu_to_be32(mask << shift);
	*opcr |= cpu_to_be32((value & mask) << shift);
}

#define get_opcr_online(v)		get_opcr((v), 0x1, 31)
#define get_opcr_p2p_connections(v)	get_opcr((v), 0x3f, 24)
#define get_opcr_channel(v)		get_opcr((v), 0x3f, 16)

#define set_opcr_p2p_connections(p, v)	set_opcr((p), (v), 0x3f, 24)
#define set_opcr_channel(p, v)		set_opcr((p), (v), 0x3f, 16)
#define set_opcr_data_rate(p, v)	set_opcr((p), (v), 0x3, 14)
#define set_opcr_overhead_id(p, v)	set_opcr((p), (v), 0xf, 10)

int cmp_establish_pp_connection(struct firedtv *fdtv, int plug, int channel)
{
	__be32 old_opcr, opcr[2];
	u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
	int attempts = 0;
	int ret;

	ret = cmp_read(fdtv, opcr_address, opcr);
	if (ret < 0)
		return ret;

repeat:
	if (!get_opcr_online(*opcr)) {
		dev_err(fdtv->device, "CMP: output offline\n");
		return -EBUSY;
	}

	old_opcr = *opcr;

	if (get_opcr_p2p_connections(*opcr)) {
		if (get_opcr_channel(*opcr) != channel) {
			dev_err(fdtv->device, "CMP: cannot change channel\n");
			return -EBUSY;
		}
		dev_info(fdtv->device, "CMP: overlaying connection\n");

		/* We don't allocate isochronous resources. */
	} else {
		set_opcr_channel(opcr, channel);
		set_opcr_data_rate(opcr, 2); /* S400 */

		/* FIXME: this is for the worst case - optimize */
		set_opcr_overhead_id(opcr, 0);

		/* FIXME: allocate isochronous channel and bandwidth at IRM */
	}

	set_opcr_p2p_connections(opcr, get_opcr_p2p_connections(*opcr) + 1);

	opcr[1] = *opcr;
	opcr[0] = old_opcr;

	ret = cmp_lock(fdtv, opcr_address, opcr);
	if (ret < 0)
		return ret;

	if (old_opcr != *opcr) {
		/*
		 * FIXME: if old_opcr.P2P_Connections > 0,
		 * deallocate isochronous channel and bandwidth at IRM
		 */

		if (++attempts < 6) /* arbitrary limit */
			goto repeat;
		return -EBUSY;
	}

	return 0;
}

void cmp_break_pp_connection(struct firedtv *fdtv, int plug, int channel)
{
	__be32 old_opcr, opcr[2];
	u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
	int attempts = 0;

	if (cmp_read(fdtv, opcr_address, opcr) < 0)
		return;

repeat:
	if (!get_opcr_online(*opcr) || !get_opcr_p2p_connections(*opcr) ||
	    get_opcr_channel(*opcr) != channel) {
		dev_err(fdtv->device, "CMP: no connection to break\n");
		return;
	}

	old_opcr = *opcr;
	set_opcr_p2p_connections(opcr, get_opcr_p2p_connections(*opcr) - 1);

	opcr[1] = *opcr;
	opcr[0] = old_opcr;

	if (cmp_lock(fdtv, opcr_address, opcr) < 0)
		return;

	if (old_opcr != *opcr) {
		/*
		 * FIXME: if old_opcr.P2P_Connections == 1, i.e. we were last
		 * owner, deallocate isochronous channel and bandwidth at IRM
		 * if (...)
		 *	fdtv->backend->dealloc_resources(fdtv, channel, bw);
		 */

		if (++attempts < 6) /* arbitrary limit */
			goto repeat;
	}
}