summaryrefslogtreecommitdiff
path: root/drivers/media/usb/dvb-usb-v2/af9015.c
blob: 09e0f58f6bb761d9ff458c020ce13421a3bfd86e (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
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
/*
 * DVB USB Linux driver for Afatech AF9015 DVB-T USB2.0 receiver
 *
 * Copyright (C) 2007 Antti Palosaari <crope@iki.fi>
 *
 * Thanks to Afatech who kindly provided information.
 *
 *    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 "af9015.h"

static int dvb_usb_af9015_remote;
module_param_named(remote, dvb_usb_af9015_remote, int, 0644);
MODULE_PARM_DESC(remote, "select remote");
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

static int af9015_ctrl_msg(struct dvb_usb_device *d, struct req_t *req)
{
#define REQ_HDR_LEN 8 /* send header size */
#define ACK_HDR_LEN 2 /* rece header size */
	struct af9015_state *state = d_to_priv(d);
	int ret, wlen, rlen;
	u8 write = 1;

	mutex_lock(&d->usb_mutex);

	state->buf[0] = req->cmd;
	state->buf[1] = state->seq++;
	state->buf[2] = req->i2c_addr;
	state->buf[3] = req->addr >> 8;
	state->buf[4] = req->addr & 0xff;
	state->buf[5] = req->mbox;
	state->buf[6] = req->addr_len;
	state->buf[7] = req->data_len;

	switch (req->cmd) {
	case GET_CONFIG:
	case READ_MEMORY:
	case RECONNECT_USB:
		write = 0;
		break;
	case READ_I2C:
		write = 0;
		state->buf[2] |= 0x01; /* set I2C direction */
	case WRITE_I2C:
		state->buf[0] = READ_WRITE_I2C;
		break;
	case WRITE_MEMORY:
		if (((req->addr & 0xff00) == 0xff00) ||
		    ((req->addr & 0xff00) == 0xae00))
			state->buf[0] = WRITE_VIRTUAL_MEMORY;
	case WRITE_VIRTUAL_MEMORY:
	case COPY_FIRMWARE:
	case DOWNLOAD_FIRMWARE:
	case BOOT:
		break;
	default:
		dev_err(&d->udev->dev, "%s: unknown command=%d\n",
				KBUILD_MODNAME, req->cmd);
		ret = -EIO;
		goto error;
	}

	/* buffer overflow check */
	if ((write && (req->data_len > BUF_LEN - REQ_HDR_LEN)) ||
			(!write && (req->data_len > BUF_LEN - ACK_HDR_LEN))) {
		dev_err(&d->udev->dev, "%s: too much data; cmd=%d len=%d\n",
				KBUILD_MODNAME, req->cmd, req->data_len);
		ret = -EINVAL;
		goto error;
	}

	/* write receives seq + status = 2 bytes
	   read receives seq + status + data = 2 + N bytes */
	wlen = REQ_HDR_LEN;
	rlen = ACK_HDR_LEN;
	if (write) {
		wlen += req->data_len;
		memcpy(&state->buf[REQ_HDR_LEN], req->data, req->data_len);
	} else {
		rlen += req->data_len;
	}

	/* no ack for these packets */
	if (req->cmd == DOWNLOAD_FIRMWARE || req->cmd == RECONNECT_USB)
		rlen = 0;

	ret = dvb_usbv2_generic_rw_locked(d,
			state->buf, wlen, state->buf, rlen);
	if (ret)
		goto error;

	/* check status */
	if (rlen && state->buf[1]) {
		dev_err(&d->udev->dev, "%s: command failed=%d\n",
				KBUILD_MODNAME, state->buf[1]);
		ret = -EIO;
		goto error;
	}

	/* read request, copy returned data to return buf */
	if (!write)
		memcpy(req->data, &state->buf[ACK_HDR_LEN], req->data_len);
error:
	mutex_unlock(&d->usb_mutex);

	return ret;
}

static int af9015_write_regs(struct dvb_usb_device *d, u16 addr, u8 *val,
	u8 len)
{
	struct req_t req = {WRITE_MEMORY, AF9015_I2C_DEMOD, addr, 0, 0, len,
		val};
	return af9015_ctrl_msg(d, &req);
}

static int af9015_read_regs(struct dvb_usb_device *d, u16 addr, u8 *val, u8 len)
{
	struct req_t req = {READ_MEMORY, AF9015_I2C_DEMOD, addr, 0, 0, len,
		val};
	return af9015_ctrl_msg(d, &req);
}

static int af9015_write_reg(struct dvb_usb_device *d, u16 addr, u8 val)
{
	return af9015_write_regs(d, addr, &val, 1);
}

static int af9015_read_reg(struct dvb_usb_device *d, u16 addr, u8 *val)
{
	return af9015_read_regs(d, addr, val, 1);
}

static int af9015_write_reg_i2c(struct dvb_usb_device *d, u8 addr, u16 reg,
	u8 val)
{
	struct af9015_state *state = d_to_priv(d);
	struct req_t req = {WRITE_I2C, addr, reg, 1, 1, 1, &val};

	if (addr == state->af9013_config[0].i2c_addr ||
	    addr == state->af9013_config[1].i2c_addr)
		req.addr_len = 3;

	return af9015_ctrl_msg(d, &req);
}

static int af9015_read_reg_i2c(struct dvb_usb_device *d, u8 addr, u16 reg,
	u8 *val)
{
	struct af9015_state *state = d_to_priv(d);
	struct req_t req = {READ_I2C, addr, reg, 0, 1, 1, val};

	if (addr == state->af9013_config[0].i2c_addr ||
	    addr == state->af9013_config[1].i2c_addr)
		req.addr_len = 3;

	return af9015_ctrl_msg(d, &req);
}

static int af9015_do_reg_bit(struct dvb_usb_device *d, u16 addr, u8 bit, u8 op)
{
	int ret;
	u8 val, mask = 0x01;

	ret = af9015_read_reg(d, addr, &val);
	if (ret)
		return ret;

	mask <<= bit;
	if (op) {
		/* set bit */
		val |= mask;
	} else {
		/* clear bit */
		mask ^= 0xff;
		val &= mask;
	}

	return af9015_write_reg(d, addr, val);
}

static int af9015_set_reg_bit(struct dvb_usb_device *d, u16 addr, u8 bit)
{
	return af9015_do_reg_bit(d, addr, bit, 1);
}

static int af9015_clear_reg_bit(struct dvb_usb_device *d, u16 addr, u8 bit)
{
	return af9015_do_reg_bit(d, addr, bit, 0);
}

static int af9015_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
	int num)
{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	struct af9015_state *state = d_to_priv(d);
	int ret = 0, i = 0;
	u16 addr;
	u8 uninitialized_var(mbox), addr_len;
	struct req_t req;

/*
The bus lock is needed because there is two tuners both using same I2C-address.
Due to that the only way to select correct tuner is use demodulator I2C-gate.

................................................
. AF9015 includes integrated AF9013 demodulator.
. ____________                   ____________  .                ____________
.|     uC     |                 |   demod    | .               |    tuner   |
.|------------|                 |------------| .               |------------|
.|   AF9015   |                 |  AF9013/5  | .               |   MXL5003  |
.|            |--+----I2C-------|-----/ -----|-.-----I2C-------|            |
.|            |  |              | addr 0x38  | .               |  addr 0xc6 |
.|____________|  |              |____________| .               |____________|
.................|..............................
		 |               ____________                   ____________
		 |              |   demod    |                 |    tuner   |
		 |              |------------|                 |------------|
		 |              |   AF9013   |                 |   MXL5003  |
		 +----I2C-------|-----/ -----|-------I2C-------|            |
				| addr 0x3a  |                 |  addr 0xc6 |
				|____________|                 |____________|
*/
	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
		return -EAGAIN;

	while (i < num) {
		if (msg[i].addr == state->af9013_config[0].i2c_addr ||
		    msg[i].addr == state->af9013_config[1].i2c_addr) {
			addr = msg[i].buf[0] << 8;
			addr += msg[i].buf[1];
			mbox = msg[i].buf[2];
			addr_len = 3;
		} else {
			addr = msg[i].buf[0];
			addr_len = 1;
			/* mbox is don't care in that case */
		}

		if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
			if (msg[i].len > 3 || msg[i+1].len > 61) {
				ret = -EOPNOTSUPP;
				goto error;
			}
			if (msg[i].addr == state->af9013_config[0].i2c_addr)
				req.cmd = READ_MEMORY;
			else
				req.cmd = READ_I2C;
			req.i2c_addr = msg[i].addr;
			req.addr = addr;
			req.mbox = mbox;
			req.addr_len = addr_len;
			req.data_len = msg[i+1].len;
			req.data = &msg[i+1].buf[0];
			ret = af9015_ctrl_msg(d, &req);
			i += 2;
		} else if (msg[i].flags & I2C_M_RD) {
			if (msg[i].len > 61) {
				ret = -EOPNOTSUPP;
				goto error;
			}
			if (msg[i].addr == state->af9013_config[0].i2c_addr) {
				ret = -EINVAL;
				goto error;
			}
			req.cmd = READ_I2C;
			req.i2c_addr = msg[i].addr;
			req.addr = addr;
			req.mbox = mbox;
			req.addr_len = addr_len;
			req.data_len = msg[i].len;
			req.data = &msg[i].buf[0];
			ret = af9015_ctrl_msg(d, &req);
			i += 1;
		} else {
			if (msg[i].len > 21) {
				ret = -EOPNOTSUPP;
				goto error;
			}
			if (msg[i].addr == state->af9013_config[0].i2c_addr)
				req.cmd = WRITE_MEMORY;
			else
				req.cmd = WRITE_I2C;
			req.i2c_addr = msg[i].addr;
			req.addr = addr;
			req.mbox = mbox;
			req.addr_len = addr_len;
			req.data_len = msg[i].len-addr_len;
			req.data = &msg[i].buf[addr_len];
			ret = af9015_ctrl_msg(d, &req);
			i += 1;
		}
		if (ret)
			goto error;

	}
	ret = i;

error:
	mutex_unlock(&d->i2c_mutex);

	return ret;
}

static u32 af9015_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C;
}

static struct i2c_algorithm af9015_i2c_algo = {
	.master_xfer = af9015_i2c_xfer,
	.functionality = af9015_i2c_func,
};

static int af9015_identify_state(struct dvb_usb_device *d, const char **name)
{
	int ret;
	u8 reply;
	struct req_t req = {GET_CONFIG, 0, 0, 0, 0, 1, &reply};

	ret = af9015_ctrl_msg(d, &req);
	if (ret)
		return ret;

	dev_dbg(&d->udev->dev, "%s: reply=%02x\n", __func__, reply);

	if (reply == 0x02)
		ret = WARM;
	else
		ret = COLD;

	return ret;
}

static int af9015_download_firmware(struct dvb_usb_device *d,
	const struct firmware *fw)
{
	struct af9015_state *state = d_to_priv(d);
	int i, len, remaining, ret;
	struct req_t req = {DOWNLOAD_FIRMWARE, 0, 0, 0, 0, 0, NULL};
	u16 checksum = 0;
	dev_dbg(&d->udev->dev, "%s:\n", __func__);

	/* calc checksum */
	for (i = 0; i < fw->size; i++)
		checksum += fw->data[i];

	state->firmware_size = fw->size;
	state->firmware_checksum = checksum;

	#define FW_ADDR 0x5100 /* firmware start address */
	#define LEN_MAX 55 /* max packet size */
	for (remaining = fw->size; remaining > 0; remaining -= LEN_MAX) {
		len = remaining;
		if (len > LEN_MAX)
			len = LEN_MAX;

		req.data_len = len;
		req.data = (u8 *) &fw->data[fw->size - remaining];
		req.addr = FW_ADDR + fw->size - remaining;

		ret = af9015_ctrl_msg(d, &req);
		if (ret) {
			dev_err(&d->udev->dev,
					"%s: firmware download failed=%d\n",
					KBUILD_MODNAME, ret);
			goto error;
		}
	}

	/* firmware loaded, request boot */
	req.cmd = BOOT;
	req.data_len = 0;
	ret = af9015_ctrl_msg(d, &req);
	if (ret) {
		dev_err(&d->udev->dev, "%s: firmware boot failed=%d\n",
				KBUILD_MODNAME, ret);
		goto error;
	}

error:
	return ret;
}

#define AF9015_EEPROM_SIZE 256
/* 2^31 + 2^29 - 2^25 + 2^22 - 2^19 - 2^16 + 1 */
#define GOLDEN_RATIO_PRIME_32 0x9e370001UL

/* hash (and dump) eeprom */
static int af9015_eeprom_hash(struct dvb_usb_device *d)
{
	struct af9015_state *state = d_to_priv(d);
	int ret, i;
	u8 buf[AF9015_EEPROM_SIZE];
	struct req_t req = {READ_I2C, AF9015_I2C_EEPROM, 0, 0, 1, 1, NULL};

	/* read eeprom */
	for (i = 0; i < AF9015_EEPROM_SIZE; i++) {
		req.addr = i;
		req.data = &buf[i];
		ret = af9015_ctrl_msg(d, &req);
		if (ret < 0)
			goto err;
	}

	/* calculate checksum */
	for (i = 0; i < AF9015_EEPROM_SIZE / sizeof(u32); i++) {
		state->eeprom_sum *= GOLDEN_RATIO_PRIME_32;
		state->eeprom_sum += le32_to_cpu(((__le32 *)buf)[i]);
	}

	for (i = 0; i < AF9015_EEPROM_SIZE; i += 16)
		dev_dbg(&d->udev->dev, "%s: %*ph\n", __func__, 16, buf + i);

	dev_dbg(&d->udev->dev, "%s: eeprom sum=%.8x\n",
			__func__, state->eeprom_sum);
	return 0;
err:
	dev_err(&d->udev->dev, "%s: eeprom failed=%d\n", KBUILD_MODNAME, ret);
	return ret;
}

static int af9015_read_config(struct dvb_usb_device *d)
{
	struct af9015_state *state = d_to_priv(d);
	int ret;
	u8 val, i, offset = 0;
	struct req_t req = {READ_I2C, AF9015_I2C_EEPROM, 0, 0, 1, 1, &val};

	dev_dbg(&d->udev->dev, "%s:\n", __func__);

	/* IR remote controller */
	req.addr = AF9015_EEPROM_IR_MODE;
	/* first message will timeout often due to possible hw bug */
	for (i = 0; i < 4; i++) {
		ret = af9015_ctrl_msg(d, &req);
		if (!ret)
			break;
	}
	if (ret)
		goto error;

	ret = af9015_eeprom_hash(d);
	if (ret)
		goto error;

	state->ir_mode = val;
	dev_dbg(&d->udev->dev, "%s: IR mode=%d\n", __func__, val);

	/* TS mode - one or two receivers */
	req.addr = AF9015_EEPROM_TS_MODE;
	ret = af9015_ctrl_msg(d, &req);
	if (ret)
		goto error;

	state->dual_mode = val;
	dev_dbg(&d->udev->dev, "%s: TS mode=%d\n", __func__, state->dual_mode);

	/* disable 2nd adapter because we don't have PID-filters */
	if (d->udev->speed == USB_SPEED_FULL)
		state->dual_mode = 0;

	if (state->dual_mode) {
		/* read 2nd demodulator I2C address */
		req.addr = AF9015_EEPROM_DEMOD2_I2C;
		ret = af9015_ctrl_msg(d, &req);
		if (ret)
			goto error;

		state->af9013_config[1].i2c_addr = val;
	}

	for (i = 0; i < state->dual_mode + 1; i++) {
		if (i == 1)
			offset = AF9015_EEPROM_OFFSET;
		/* xtal */
		req.addr = AF9015_EEPROM_XTAL_TYPE1 + offset;
		ret = af9015_ctrl_msg(d, &req);
		if (ret)
			goto error;
		switch (val) {
		case 0:
			state->af9013_config[i].clock = 28800000;
			break;
		case 1:
			state->af9013_config[i].clock = 20480000;
			break;
		case 2:
			state->af9013_config[i].clock = 28000000;
			break;
		case 3:
			state->af9013_config[i].clock = 25000000;
			break;
		}
		dev_dbg(&d->udev->dev, "%s: [%d] xtal=%d set clock=%d\n",
				__func__, i, val,
				state->af9013_config[i].clock);

		/* IF frequency */
		req.addr = AF9015_EEPROM_IF1H + offset;
		ret = af9015_ctrl_msg(d, &req);
		if (ret)
			goto error;

		state->af9013_config[i].if_frequency = val << 8;

		req.addr = AF9015_EEPROM_IF1L + offset;
		ret = af9015_ctrl_msg(d, &req);
		if (ret)
			goto error;

		state->af9013_config[i].if_frequency += val;
		state->af9013_config[i].if_frequency *= 1000;
		dev_dbg(&d->udev->dev, "%s: [%d] IF frequency=%d\n", __func__,
				i, state->af9013_config[i].if_frequency);

		/* MT2060 IF1 */
		req.addr = AF9015_EEPROM_MT2060_IF1H  + offset;
		ret = af9015_ctrl_msg(d, &req);
		if (ret)
			goto error;
		state->mt2060_if1[i] = val << 8;
		req.addr = AF9015_EEPROM_MT2060_IF1L + offset;
		ret = af9015_ctrl_msg(d, &req);
		if (ret)
			goto error;
		state->mt2060_if1[i] += val;
		dev_dbg(&d->udev->dev, "%s: [%d] MT2060 IF1=%d\n", __func__, i,
				state->mt2060_if1[i]);

		/* tuner */
		req.addr =  AF9015_EEPROM_TUNER_ID1 + offset;
		ret = af9015_ctrl_msg(d, &req);
		if (ret)
			goto error;
		switch (val) {
		case AF9013_TUNER_ENV77H11D5:
		case AF9013_TUNER_MT2060:
		case AF9013_TUNER_QT1010:
		case AF9013_TUNER_UNKNOWN:
		case AF9013_TUNER_MT2060_2:
		case AF9013_TUNER_TDA18271:
		case AF9013_TUNER_QT1010A:
		case AF9013_TUNER_TDA18218:
			state->af9013_config[i].spec_inv = 1;
			break;
		case AF9013_TUNER_MXL5003D:
		case AF9013_TUNER_MXL5005D:
		case AF9013_TUNER_MXL5005R:
		case AF9013_TUNER_MXL5007T:
			state->af9013_config[i].spec_inv = 0;
			break;
		case AF9013_TUNER_MC44S803:
			state->af9013_config[i].gpio[1] = AF9013_GPIO_LO;
			state->af9013_config[i].spec_inv = 1;
			break;
		default:
			dev_err(&d->udev->dev, "%s: tuner id=%d not " \
					"supported, please report!\n",
					KBUILD_MODNAME, val);
			return -ENODEV;
		}

		state->af9013_config[i].tuner = val;
		dev_dbg(&d->udev->dev, "%s: [%d] tuner id=%d\n",
				__func__, i, val);
	}

error:
	if (ret)
		dev_err(&d->udev->dev, "%s: eeprom read failed=%d\n",
				KBUILD_MODNAME, ret);

	/* AverMedia AVerTV Volar Black HD (A850) device have bad EEPROM
	   content :-( Override some wrong values here. Ditto for the
	   AVerTV Red HD+ (A850T) device. */
	if (le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_AVERMEDIA &&
		((le16_to_cpu(d->udev->descriptor.idProduct) ==
			USB_PID_AVERMEDIA_A850) ||
		(le16_to_cpu(d->udev->descriptor.idProduct) ==
			USB_PID_AVERMEDIA_A850T))) {
		dev_dbg(&d->udev->dev,
				"%s: AverMedia A850: overriding config\n",
				__func__);
		/* disable dual mode */
		state->dual_mode = 0;

		/* set correct IF */
		state->af9013_config[0].if_frequency = 4570000;
	}

	return ret;
}

static int af9015_get_stream_config(struct dvb_frontend *fe, u8 *ts_type,
		struct usb_data_stream_properties *stream)
{
	struct dvb_usb_device *d = fe_to_d(fe);
	dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, fe_to_adap(fe)->id);

	if (d->udev->speed == USB_SPEED_FULL)
		stream->u.bulk.buffersize = TS_USB11_FRAME_SIZE;

	return 0;
}

static int af9015_get_adapter_count(struct dvb_usb_device *d)
{
	struct af9015_state *state = d_to_priv(d);
	return state->dual_mode + 1;
}

/* override demod callbacks for resource locking */
static int af9015_af9013_set_frontend(struct dvb_frontend *fe)
{
	int ret;
	struct af9015_state *state = fe_to_priv(fe);

	if (mutex_lock_interruptible(&state->fe_mutex))
		return -EAGAIN;

	ret = state->set_frontend[fe_to_adap(fe)->id](fe);

	mutex_unlock(&state->fe_mutex);

	return ret;
}

/* override demod callbacks for resource locking */
static int af9015_af9013_read_status(struct dvb_frontend *fe,
	enum fe_status *status)
{
	int ret;
	struct af9015_state *state = fe_to_priv(fe);

	if (mutex_lock_interruptible(&state->fe_mutex))
		return -EAGAIN;

	ret = state->read_status[fe_to_adap(fe)->id](fe, status);

	mutex_unlock(&state->fe_mutex);

	return ret;
}

/* override demod callbacks for resource locking */
static int af9015_af9013_init(struct dvb_frontend *fe)
{
	int ret;
	struct af9015_state *state = fe_to_priv(fe);

	if (mutex_lock_interruptible(&state->fe_mutex))
		return -EAGAIN;

	ret = state->init[fe_to_adap(fe)->id](fe);

	mutex_unlock(&state->fe_mutex);

	return ret;
}

/* override demod callbacks for resource locking */
static int af9015_af9013_sleep(struct dvb_frontend *fe)
{
	int ret;
	struct af9015_state *state = fe_to_priv(fe);

	if (mutex_lock_interruptible(&state->fe_mutex))
		return -EAGAIN;

	ret = state->sleep[fe_to_adap(fe)->id](fe);

	mutex_unlock(&state->fe_mutex);

	return ret;
}

/* override tuner callbacks for resource locking */
static int af9015_tuner_init(struct dvb_frontend *fe)
{
	int ret;
	struct af9015_state *state = fe_to_priv(fe);

	if (mutex_lock_interruptible(&state->fe_mutex))
		return -EAGAIN;

	ret = state->tuner_init[fe_to_adap(fe)->id](fe);

	mutex_unlock(&state->fe_mutex);

	return ret;
}

/* override tuner callbacks for resource locking */
static int af9015_tuner_sleep(struct dvb_frontend *fe)
{
	int ret;
	struct af9015_state *state = fe_to_priv(fe);

	if (mutex_lock_interruptible(&state->fe_mutex))
		return -EAGAIN;

	ret = state->tuner_sleep[fe_to_adap(fe)->id](fe);

	mutex_unlock(&state->fe_mutex);

	return ret;
}

static int af9015_copy_firmware(struct dvb_usb_device *d)
{
	struct af9015_state *state = d_to_priv(d);
	int ret;
	u8 fw_params[4];
	u8 val, i;
	struct req_t req = {COPY_FIRMWARE, 0, 0x5100, 0, 0, sizeof(fw_params),
		fw_params };
	dev_dbg(&d->udev->dev, "%s:\n", __func__);

	fw_params[0] = state->firmware_size >> 8;
	fw_params[1] = state->firmware_size & 0xff;
	fw_params[2] = state->firmware_checksum >> 8;
	fw_params[3] = state->firmware_checksum & 0xff;

	/* wait 2nd demodulator ready */
	msleep(100);

	ret = af9015_read_reg_i2c(d, state->af9013_config[1].i2c_addr,
			0x98be, &val);
	if (ret)
		goto error;
	else
		dev_dbg(&d->udev->dev, "%s: firmware status=%02x\n",
				__func__, val);

	if (val == 0x0c) /* fw is running, no need for download */
		goto exit;

	/* set I2C master clock to fast (to speed up firmware copy) */
	ret = af9015_write_reg(d, 0xd416, 0x04); /* 0x04 * 400ns */
	if (ret)
		goto error;

	msleep(50);

	/* copy firmware */
	ret = af9015_ctrl_msg(d, &req);
	if (ret)
		dev_err(&d->udev->dev, "%s: firmware copy cmd failed=%d\n",
				KBUILD_MODNAME, ret);

	dev_dbg(&d->udev->dev, "%s: firmware copy done\n", __func__);

	/* set I2C master clock back to normal */
	ret = af9015_write_reg(d, 0xd416, 0x14); /* 0x14 * 400ns */
	if (ret)
		goto error;

	/* request boot firmware */
	ret = af9015_write_reg_i2c(d, state->af9013_config[1].i2c_addr,
			0xe205, 1);
	dev_dbg(&d->udev->dev, "%s: firmware boot cmd status=%d\n",
			__func__, ret);
	if (ret)
		goto error;

	for (i = 0; i < 15; i++) {
		msleep(100);

		/* check firmware status */
		ret = af9015_read_reg_i2c(d, state->af9013_config[1].i2c_addr,
				0x98be, &val);
		dev_dbg(&d->udev->dev, "%s: firmware status cmd status=%d " \
				"firmware status=%02x\n", __func__, ret, val);
		if (ret)
			goto error;

		if (val == 0x0c || val == 0x04) /* success or fail */
			break;
	}

	if (val == 0x04) {
		dev_err(&d->udev->dev, "%s: firmware did not run\n",
				KBUILD_MODNAME);
		ret = -ETIMEDOUT;
	} else if (val != 0x0c) {
		dev_err(&d->udev->dev, "%s: firmware boot timeout\n",
				KBUILD_MODNAME);
		ret = -ETIMEDOUT;
	}

error:
exit:
	return ret;
}

static int af9015_af9013_frontend_attach(struct dvb_usb_adapter *adap)
{
	int ret;
	struct af9015_state *state = adap_to_priv(adap);

	if (adap->id == 0) {
		state->af9013_config[0].ts_mode = AF9013_TS_USB;
		memcpy(state->af9013_config[0].api_version, "\x0\x1\x9\x0", 4);
		state->af9013_config[0].gpio[0] = AF9013_GPIO_HI;
		state->af9013_config[0].gpio[3] = AF9013_GPIO_TUNER_ON;
	} else if (adap->id == 1) {
		state->af9013_config[1].ts_mode = AF9013_TS_SERIAL;
		memcpy(state->af9013_config[1].api_version, "\x0\x1\x9\x0", 4);
		state->af9013_config[1].gpio[0] = AF9013_GPIO_TUNER_ON;
		state->af9013_config[1].gpio[1] = AF9013_GPIO_LO;

		/* copy firmware to 2nd demodulator */
		if (state->dual_mode) {
			ret = af9015_copy_firmware(adap_to_d(adap));
			if (ret) {
				dev_err(&adap_to_d(adap)->udev->dev,
						"%s: firmware copy to 2nd " \
						"frontend failed, will " \
						"disable it\n", KBUILD_MODNAME);
				state->dual_mode = 0;
				return -ENODEV;
			}
		} else {
			return -ENODEV;
		}
	}

	/* attach demodulator */
	adap->fe[0] = dvb_attach(af9013_attach,
		&state->af9013_config[adap->id], &adap_to_d(adap)->i2c_adap);

	/*
	 * AF9015 firmware does not like if it gets interrupted by I2C adapter
	 * request on some critical phases. During normal operation I2C adapter
	 * is used only 2nd demodulator and tuner on dual tuner devices.
	 * Override demodulator callbacks and use mutex for limit access to
	 * those "critical" paths to keep AF9015 happy.
	 */
	if (adap->fe[0]) {
		state->set_frontend[adap->id] =
			adap->fe[0]->ops.set_frontend;
		adap->fe[0]->ops.set_frontend =
			af9015_af9013_set_frontend;

		state->read_status[adap->id] =
			adap->fe[0]->ops.read_status;
		adap->fe[0]->ops.read_status =
			af9015_af9013_read_status;

		state->init[adap->id] = adap->fe[0]->ops.init;
		adap->fe[0]->ops.init = af9015_af9013_init;

		state->sleep[adap->id] = adap->fe[0]->ops.sleep;
		adap->fe[0]->ops.sleep = af9015_af9013_sleep;
	}

	return adap->fe[0] == NULL ? -ENODEV : 0;
}

static struct mt2060_config af9015_mt2060_config = {
	.i2c_address = 0xc0,
	.clock_out = 0,
};

static struct qt1010_config af9015_qt1010_config = {
	.i2c_address = 0xc4,
};

static struct tda18271_config af9015_tda18271_config = {
	.gate = TDA18271_GATE_DIGITAL,
	.small_i2c = TDA18271_16_BYTE_CHUNK_INIT,
};

static struct mxl5005s_config af9015_mxl5003_config = {
	.i2c_address     = 0xc6,
	.if_freq         = IF_FREQ_4570000HZ,
	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
	.agc_mode        = MXL_SINGLE_AGC,
	.tracking_filter = MXL_TF_DEFAULT,
	.rssi_enable     = MXL_RSSI_ENABLE,
	.cap_select      = MXL_CAP_SEL_ENABLE,
	.div_out         = MXL_DIV_OUT_4,
	.clock_out       = MXL_CLOCK_OUT_DISABLE,
	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
	.top		 = MXL5005S_TOP_25P2,
	.mod_mode        = MXL_DIGITAL_MODE,
	.if_mode         = MXL_ZERO_IF,
	.AgcMasterByte   = 0x00,
};

static struct mxl5005s_config af9015_mxl5005_config = {
	.i2c_address     = 0xc6,
	.if_freq         = IF_FREQ_4570000HZ,
	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
	.agc_mode        = MXL_SINGLE_AGC,
	.tracking_filter = MXL_TF_OFF,
	.rssi_enable     = MXL_RSSI_ENABLE,
	.cap_select      = MXL_CAP_SEL_ENABLE,
	.div_out         = MXL_DIV_OUT_4,
	.clock_out       = MXL_CLOCK_OUT_DISABLE,
	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
	.top		 = MXL5005S_TOP_25P2,
	.mod_mode        = MXL_DIGITAL_MODE,
	.if_mode         = MXL_ZERO_IF,
	.AgcMasterByte   = 0x00,
};

static struct mc44s803_config af9015_mc44s803_config = {
	.i2c_address = 0xc0,
	.dig_out = 1,
};

static struct tda18218_config af9015_tda18218_config = {
	.i2c_address = 0xc0,
	.i2c_wr_max = 21, /* max wr bytes AF9015 I2C adap can handle at once */
};

static struct mxl5007t_config af9015_mxl5007t_config = {
	.xtal_freq_hz = MxL_XTAL_24_MHZ,
	.if_freq_hz = MxL_IF_4_57_MHZ,
};

static int af9015_tuner_attach(struct dvb_usb_adapter *adap)
{
	struct dvb_usb_device *d = adap_to_d(adap);
	struct af9015_state *state = d_to_priv(d);
	int ret;
	dev_dbg(&d->udev->dev, "%s:\n", __func__);

	switch (state->af9013_config[adap->id].tuner) {
	case AF9013_TUNER_MT2060:
	case AF9013_TUNER_MT2060_2:
		ret = dvb_attach(mt2060_attach, adap->fe[0],
			&adap_to_d(adap)->i2c_adap, &af9015_mt2060_config,
			state->mt2060_if1[adap->id])
			== NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_QT1010:
	case AF9013_TUNER_QT1010A:
		ret = dvb_attach(qt1010_attach, adap->fe[0],
			&adap_to_d(adap)->i2c_adap,
			&af9015_qt1010_config) == NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_TDA18271:
		ret = dvb_attach(tda18271_attach, adap->fe[0], 0xc0,
			&adap_to_d(adap)->i2c_adap,
			&af9015_tda18271_config) == NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_TDA18218:
		ret = dvb_attach(tda18218_attach, adap->fe[0],
			&adap_to_d(adap)->i2c_adap,
			&af9015_tda18218_config) == NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_MXL5003D:
		ret = dvb_attach(mxl5005s_attach, adap->fe[0],
			&adap_to_d(adap)->i2c_adap,
			&af9015_mxl5003_config) == NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_MXL5005D:
	case AF9013_TUNER_MXL5005R:
		ret = dvb_attach(mxl5005s_attach, adap->fe[0],
			&adap_to_d(adap)->i2c_adap,
			&af9015_mxl5005_config) == NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_ENV77H11D5:
		ret = dvb_attach(dvb_pll_attach, adap->fe[0], 0xc0,
			&adap_to_d(adap)->i2c_adap,
			DVB_PLL_TDA665X) == NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_MC44S803:
		ret = dvb_attach(mc44s803_attach, adap->fe[0],
			&adap_to_d(adap)->i2c_adap,
			&af9015_mc44s803_config) == NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_MXL5007T:
		ret = dvb_attach(mxl5007t_attach, adap->fe[0],
			&adap_to_d(adap)->i2c_adap,
			0xc0, &af9015_mxl5007t_config) == NULL ? -ENODEV : 0;
		break;
	case AF9013_TUNER_UNKNOWN:
	default:
		dev_err(&d->udev->dev, "%s: unknown tuner id=%d\n",
				KBUILD_MODNAME,
				state->af9013_config[adap->id].tuner);
		ret = -ENODEV;
	}

	if (adap->fe[0]->ops.tuner_ops.init) {
		state->tuner_init[adap->id] =
			adap->fe[0]->ops.tuner_ops.init;
		adap->fe[0]->ops.tuner_ops.init = af9015_tuner_init;
	}

	if (adap->fe[0]->ops.tuner_ops.sleep) {
		state->tuner_sleep[adap->id] =
			adap->fe[0]->ops.tuner_ops.sleep;
		adap->fe[0]->ops.tuner_ops.sleep = af9015_tuner_sleep;
	}

	return ret;
}

static int af9015_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
	struct dvb_usb_device *d = adap_to_d(adap);
	int ret;
	dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);

	if (onoff)
		ret = af9015_set_reg_bit(d, 0xd503, 0);
	else
		ret = af9015_clear_reg_bit(d, 0xd503, 0);

	return ret;
}

static int af9015_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid,
	int onoff)
{
	struct dvb_usb_device *d = adap_to_d(adap);
	int ret;
	u8 idx;
	dev_dbg(&d->udev->dev, "%s: index=%d pid=%04x onoff=%d\n",
			__func__, index, pid, onoff);

	ret = af9015_write_reg(d, 0xd505, (pid & 0xff));
	if (ret)
		goto error;

	ret = af9015_write_reg(d, 0xd506, (pid >> 8));
	if (ret)
		goto error;

	idx = ((index & 0x1f) | (1 << 5));
	ret = af9015_write_reg(d, 0xd504, idx);

error:
	return ret;
}

static int af9015_init_endpoint(struct dvb_usb_device *d)
{
	struct af9015_state *state = d_to_priv(d);
	int ret;
	u16 frame_size;
	u8  packet_size;
	dev_dbg(&d->udev->dev, "%s: USB speed=%d\n", __func__, d->udev->speed);

	if (d->udev->speed == USB_SPEED_FULL) {
		frame_size = TS_USB11_FRAME_SIZE/4;
		packet_size = TS_USB11_MAX_PACKET_SIZE/4;
	} else {
		frame_size = TS_USB20_FRAME_SIZE/4;
		packet_size = TS_USB20_MAX_PACKET_SIZE/4;
	}

	ret = af9015_set_reg_bit(d, 0xd507, 2); /* assert EP4 reset */
	if (ret)
		goto error;
	ret = af9015_set_reg_bit(d, 0xd50b, 1); /* assert EP5 reset */
	if (ret)
		goto error;
	ret = af9015_clear_reg_bit(d, 0xdd11, 5); /* disable EP4 */
	if (ret)
		goto error;
	ret = af9015_clear_reg_bit(d, 0xdd11, 6); /* disable EP5 */
	if (ret)
		goto error;
	ret = af9015_set_reg_bit(d, 0xdd11, 5); /* enable EP4 */
	if (ret)
		goto error;
	if (state->dual_mode) {
		ret = af9015_set_reg_bit(d, 0xdd11, 6); /* enable EP5 */
		if (ret)
			goto error;
	}
	ret = af9015_clear_reg_bit(d, 0xdd13, 5); /* disable EP4 NAK */
	if (ret)
		goto error;
	if (state->dual_mode) {
		ret = af9015_clear_reg_bit(d, 0xdd13, 6); /* disable EP5 NAK */
		if (ret)
			goto error;
	}
	/* EP4 xfer length */
	ret = af9015_write_reg(d, 0xdd88, frame_size & 0xff);
	if (ret)
		goto error;
	ret = af9015_write_reg(d, 0xdd89, frame_size >> 8);
	if (ret)
		goto error;
	/* EP5 xfer length */
	ret = af9015_write_reg(d, 0xdd8a, frame_size & 0xff);
	if (ret)
		goto error;
	ret = af9015_write_reg(d, 0xdd8b, frame_size >> 8);
	if (ret)
		goto error;
	ret = af9015_write_reg(d, 0xdd0c, packet_size); /* EP4 packet size */
	if (ret)
		goto error;
	ret = af9015_write_reg(d, 0xdd0d, packet_size); /* EP5 packet size */
	if (ret)
		goto error;
	ret = af9015_clear_reg_bit(d, 0xd507, 2); /* negate EP4 reset */
	if (ret)
		goto error;
	if (state->dual_mode) {
		ret = af9015_clear_reg_bit(d, 0xd50b, 1); /* negate EP5 reset */
		if (ret)
			goto error;
	}

	/* enable / disable mp2if2 */
	if (state->dual_mode)
		ret = af9015_set_reg_bit(d, 0xd50b, 0);
	else
		ret = af9015_clear_reg_bit(d, 0xd50b, 0);

error:
	if (ret)
		dev_err(&d->udev->dev, "%s: endpoint init failed=%d\n",
				KBUILD_MODNAME, ret);

	return ret;
}

static int af9015_init(struct dvb_usb_device *d)
{
	struct af9015_state *state = d_to_priv(d);
	int ret;
	dev_dbg(&d->udev->dev, "%s:\n", __func__);

	mutex_init(&state->fe_mutex);

	/* init RC canary */
	ret = af9015_write_reg(d, 0x98e9, 0xff);
	if (ret)
		goto error;

	ret = af9015_init_endpoint(d);
	if (ret)
		goto error;

error:
	return ret;
}

#if IS_ENABLED(CONFIG_RC_CORE)
struct af9015_rc_setup {
	unsigned int id;
	char *rc_codes;
};

static char *af9015_rc_setup_match(unsigned int id,
	const struct af9015_rc_setup *table)
{
	for (; table->rc_codes; table++)
		if (table->id == id)
			return table->rc_codes;
	return NULL;
}

static const struct af9015_rc_setup af9015_rc_setup_modparam[] = {
	{ AF9015_REMOTE_A_LINK_DTU_M, RC_MAP_ALINK_DTU_M },
	{ AF9015_REMOTE_MSI_DIGIVOX_MINI_II_V3, RC_MAP_MSI_DIGIVOX_II },
	{ AF9015_REMOTE_MYGICTV_U718, RC_MAP_TOTAL_MEDIA_IN_HAND },
	{ AF9015_REMOTE_DIGITTRADE_DVB_T, RC_MAP_DIGITTRADE },
	{ AF9015_REMOTE_AVERMEDIA_KS, RC_MAP_AVERMEDIA_RM_KS },
	{ }
};

static const struct af9015_rc_setup af9015_rc_setup_hashes[] = {
	{ 0xb8feb708, RC_MAP_MSI_DIGIVOX_II },
	{ 0xa3703d00, RC_MAP_ALINK_DTU_M },
	{ 0x9b7dc64e, RC_MAP_TOTAL_MEDIA_IN_HAND }, /* MYGICTV U718 */
	{ 0x5d49e3db, RC_MAP_DIGITTRADE }, /* LC-Power LC-USB-DVBT */
	{ }
};

static int af9015_rc_query(struct dvb_usb_device *d)
{
	struct af9015_state *state = d_to_priv(d);
	int ret;
	u8 buf[17];

	/* read registers needed to detect remote controller code */
	ret = af9015_read_regs(d, 0x98d9, buf, sizeof(buf));
	if (ret)
		goto error;

	/* If any of these are non-zero, assume invalid data */
	if (buf[1] || buf[2] || buf[3]) {
		dev_dbg(&d->udev->dev, "%s: invalid data\n", __func__);
		return ret;
	}

	/* Check for repeat of previous code */
	if ((state->rc_repeat != buf[6] || buf[0]) &&
			!memcmp(&buf[12], state->rc_last, 4)) {
		dev_dbg(&d->udev->dev, "%s: key repeated\n", __func__);
		rc_repeat(d->rc_dev);
		state->rc_repeat = buf[6];
		return ret;
	}

	/* Only process key if canary killed */
	if (buf[16] != 0xff && buf[0] != 0x01) {
		dev_dbg(&d->udev->dev, "%s: key pressed %*ph\n",
				__func__, 4, buf + 12);

		/* Reset the canary */
		ret = af9015_write_reg(d, 0x98e9, 0xff);
		if (ret)
			goto error;

		/* Remember this key */
		memcpy(state->rc_last, &buf[12], 4);
		if (buf[14] == (u8) ~buf[15]) {
			if (buf[12] == (u8) ~buf[13]) {
				/* NEC */
				state->rc_keycode = RC_SCANCODE_NEC(buf[12],
								    buf[14]);
			} else {
				/* NEC extended*/
				state->rc_keycode = RC_SCANCODE_NECX(buf[12] << 8 |
								     buf[13],
								     buf[14]);
			}
		} else {
			/* 32 bit NEC */
			state->rc_keycode = RC_SCANCODE_NEC32(buf[12] << 24 |
							      buf[13] << 16 |
							      buf[14] << 8  |
							      buf[15]);
		}
		rc_keydown(d->rc_dev, RC_TYPE_NEC, state->rc_keycode, 0);
	} else {
		dev_dbg(&d->udev->dev, "%s: no key press\n", __func__);
		/* Invalidate last keypress */
		/* Not really needed, but helps with debug */
		state->rc_last[2] = state->rc_last[3];
	}

	state->rc_repeat = buf[6];
	state->rc_failed = false;

error:
	if (ret) {
		dev_warn(&d->udev->dev, "%s: rc query failed=%d\n",
				KBUILD_MODNAME, ret);

		/* allow random errors as dvb-usb will stop polling on error */
		if (!state->rc_failed)
			ret = 0;

		state->rc_failed = true;
	}

	return ret;
}

static int af9015_get_rc_config(struct dvb_usb_device *d, struct dvb_usb_rc *rc)
{
	struct af9015_state *state = d_to_priv(d);
	u16 vid = le16_to_cpu(d->udev->descriptor.idVendor);

	if (state->ir_mode == AF9015_IR_MODE_DISABLED)
		return 0;

	/* try to load remote based module param */
	if (!rc->map_name)
		rc->map_name = af9015_rc_setup_match(dvb_usb_af9015_remote,
				af9015_rc_setup_modparam);

	/* try to load remote based eeprom hash */
	if (!rc->map_name)
		rc->map_name = af9015_rc_setup_match(state->eeprom_sum,
				af9015_rc_setup_hashes);

	/* try to load remote based USB iManufacturer string */
	if (!rc->map_name && vid == USB_VID_AFATECH) {
		/* Check USB manufacturer and product strings and try
		   to determine correct remote in case of chip vendor
		   reference IDs are used.
		   DO NOT ADD ANYTHING NEW HERE. Use hashes instead. */
		char manufacturer[10];
		memset(manufacturer, 0, sizeof(manufacturer));
		usb_string(d->udev, d->udev->descriptor.iManufacturer,
			manufacturer, sizeof(manufacturer));
		if (!strcmp("MSI", manufacturer)) {
			/* iManufacturer 1 MSI
			   iProduct      2 MSI K-VOX */
			rc->map_name = af9015_rc_setup_match(
					AF9015_REMOTE_MSI_DIGIVOX_MINI_II_V3,
					af9015_rc_setup_modparam);
		}
	}

	/* load empty to enable rc */
	if (!rc->map_name)
		rc->map_name = RC_MAP_EMPTY;

	rc->allowed_protos = RC_BIT_NEC;
	rc->query = af9015_rc_query;
	rc->interval = 500;

	return 0;
}
#else
	#define af9015_get_rc_config NULL
#endif

static int af9015_probe(struct usb_interface *intf,
		const struct usb_device_id *id)
{
	struct usb_device *udev = interface_to_usbdev(intf);
	char manufacturer[sizeof("ITE Technologies, Inc.")];

	memset(manufacturer, 0, sizeof(manufacturer));
	usb_string(udev, udev->descriptor.iManufacturer,
			manufacturer, sizeof(manufacturer));
	/*
	 * There is two devices having same ID but different chipset. One uses
	 * AF9015 and the other IT9135 chipset. Only difference seen on lsusb
	 * is iManufacturer string.
	 *
	 * idVendor           0x0ccd TerraTec Electronic GmbH
	 * idProduct          0x0099
	 * bcdDevice            2.00
	 * iManufacturer           1 Afatech
	 * iProduct                2 DVB-T 2
	 *
	 * idVendor           0x0ccd TerraTec Electronic GmbH
	 * idProduct          0x0099
	 * bcdDevice            2.00
	 * iManufacturer           1 ITE Technologies, Inc.
	 * iProduct                2 DVB-T TV Stick
	 */
	if ((le16_to_cpu(udev->descriptor.idVendor) == USB_VID_TERRATEC) &&
			(le16_to_cpu(udev->descriptor.idProduct) == 0x0099)) {
		if (!strcmp("ITE Technologies, Inc.", manufacturer)) {
			dev_dbg(&udev->dev, "%s: rejecting device\n", __func__);
			return -ENODEV;
		}
	}

	return dvb_usbv2_probe(intf, id);
}

/* interface 0 is used by DVB-T receiver and
   interface 1 is for remote controller (HID) */
static struct dvb_usb_device_properties af9015_props = {
	.driver_name = KBUILD_MODNAME,
	.owner = THIS_MODULE,
	.adapter_nr = adapter_nr,
	.size_of_priv = sizeof(struct af9015_state),

	.generic_bulk_ctrl_endpoint = 0x02,
	.generic_bulk_ctrl_endpoint_response = 0x81,

	.identify_state = af9015_identify_state,
	.firmware = AF9015_FIRMWARE,
	.download_firmware = af9015_download_firmware,

	.i2c_algo = &af9015_i2c_algo,
	.read_config = af9015_read_config,
	.frontend_attach = af9015_af9013_frontend_attach,
	.tuner_attach = af9015_tuner_attach,
	.init = af9015_init,
	.get_rc_config = af9015_get_rc_config,
	.get_stream_config = af9015_get_stream_config,

	.get_adapter_count = af9015_get_adapter_count,
	.adapter = {
		{
			.caps = DVB_USB_ADAP_HAS_PID_FILTER |
				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
			.pid_filter_count = 32,
			.pid_filter = af9015_pid_filter,
			.pid_filter_ctrl = af9015_pid_filter_ctrl,

			.stream = DVB_USB_STREAM_BULK(0x84, 8, TS_USB20_FRAME_SIZE),
		}, {
			.stream = DVB_USB_STREAM_BULK(0x85, 8, TS_USB20_FRAME_SIZE),
		},
	},
};

static const struct usb_device_id af9015_id_table[] = {
	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9015_9015,
		&af9015_props, "Afatech AF9015 reference design", NULL) },
	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9015_9016,
		&af9015_props, "Afatech AF9015 reference design", NULL) },
	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV_DONGLE_GOLD,
		&af9015_props, "Leadtek WinFast DTV Dongle Gold", RC_MAP_LEADTEK_Y04G0051) },
	{ DVB_USB_DEVICE(USB_VID_PINNACLE, USB_PID_PINNACLE_PCTV71E,
		&af9015_props, "Pinnacle PCTV 71e", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_399U,
		&af9015_props, "KWorld PlusTV Dual DVB-T Stick (DVB-T 399U)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_VISIONPLUS, USB_PID_TINYTWIN,
		&af9015_props, "DigitalNow TinyTwin", RC_MAP_AZUREWAVE_AD_TU700) },
	{ DVB_USB_DEVICE(USB_VID_VISIONPLUS, USB_PID_AZUREWAVE_AD_TU700,
		&af9015_props, "TwinHan AzureWave AD-TU700(704J)", RC_MAP_AZUREWAVE_AD_TU700) },
	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_USB_XE_REV2,
		&af9015_props, "TerraTec Cinergy T USB XE", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_PC160_2T,
		&af9015_props, "KWorld PlusTV Dual DVB-T PCI (DVB-T PC160-2T)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_VOLAR_X,
		&af9015_props, "AVerMedia AVerTV DVB-T Volar X", RC_MAP_AVERMEDIA_M135A) },
	{ DVB_USB_DEVICE(USB_VID_XTENSIONS, USB_PID_XTENSIONS_XD_380,
		&af9015_props, "Xtensions XD-380", NULL) },
	{ DVB_USB_DEVICE(USB_VID_MSI_2, USB_PID_MSI_DIGIVOX_DUO,
		&af9015_props, "MSI DIGIVOX Duo", RC_MAP_MSI_DIGIVOX_III) },
	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_VOLAR_X_2,
		&af9015_props, "Fujitsu-Siemens Slim Mobile USB DVB-T", NULL) },
	{ DVB_USB_DEVICE(USB_VID_TELESTAR,  USB_PID_TELESTAR_STARSTICK_2,
		&af9015_props, "Telestar Starstick 2", NULL) },
	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A309,
		&af9015_props, "AVerMedia A309", NULL) },
	{ DVB_USB_DEVICE(USB_VID_MSI_2, USB_PID_MSI_DIGI_VOX_MINI_III,
		&af9015_props, "MSI Digi VOX mini III", RC_MAP_MSI_DIGIVOX_III) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_395U,
		&af9015_props, "KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_395U_2,
		&af9015_props, "KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_395U_3,
		&af9015_props, "KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_TREKSTOR_DVBT,
		&af9015_props, "TrekStor DVB-T USB Stick", RC_MAP_TREKSTOR) },
	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A850,
		&af9015_props, "AverMedia AVerTV Volar Black HD (A850)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A805,
		&af9015_props, "AverMedia AVerTV Volar GPS 805 (A805)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_CONCEPTRONIC_CTVDIGRCU,
		&af9015_props, "Conceptronic USB2.0 DVB-T CTVDIGRCU V3.0", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_MC810,
		&af9015_props, "KWorld Digial MC-810", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KYE, USB_PID_GENIUS_TVGO_DVB_T03,
		&af9015_props, "Genius TVGo DVB-T03", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_399U_2,
		&af9015_props, "KWorld PlusTV Dual DVB-T Stick (DVB-T 399U)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_PC160_T,
		&af9015_props, "KWorld PlusTV DVB-T PCI Pro Card (DVB-T PC160-T)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV20,
		&af9015_props, "Sveon STV20 Tuner USB DVB-T HDTV", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_TINYTWIN_2,
		&af9015_props, "DigitalNow TinyTwin v2", RC_MAP_DIGITALNOW_TINYTWIN) },
	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV2000DS,
		&af9015_props, "Leadtek WinFast DTV2000DS", RC_MAP_LEADTEK_Y04G0051) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_UB383_T,
		&af9015_props, "KWorld USB DVB-T Stick Mobile (UB383-T)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_395U_4,
		&af9015_props, "KWorld USB DVB-T TV Stick II (VS-DVB-T 395U)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A815M,
		&af9015_props, "AverMedia AVerTV Volar M (A815Mac)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_RC,
		&af9015_props, "TerraTec Cinergy T Stick RC", RC_MAP_TERRATEC_SLIM_2) },
	/* XXX: that same ID [0ccd:0099] is used by af9035 driver too */
	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_DUAL_RC,
		&af9015_props, "TerraTec Cinergy T Stick Dual RC", RC_MAP_TERRATEC_SLIM) },
	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A850T,
		&af9015_props, "AverMedia AVerTV Red HD+ (A850T)", NULL) },
	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_TINYTWIN_3,
		&af9015_props, "DigitalNow TinyTwin v3", RC_MAP_DIGITALNOW_TINYTWIN) },
	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV22,
		&af9015_props, "Sveon STV22 Dual USB DVB-T Tuner HDTV", RC_MAP_MSI_DIGIVOX_III) },
	{ }
};
MODULE_DEVICE_TABLE(usb, af9015_id_table);

/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver af9015_usb_driver = {
	.name = KBUILD_MODNAME,
	.id_table = af9015_id_table,
	.probe = af9015_probe,
	.disconnect = dvb_usbv2_disconnect,
	.suspend = dvb_usbv2_suspend,
	.resume = dvb_usbv2_resume,
	.reset_resume = dvb_usbv2_reset_resume,
	.no_dynamic_id = 1,
	.soft_unbind = 1,
};

module_usb_driver(af9015_usb_driver);

MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("Afatech AF9015 driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(AF9015_FIRMWARE);