aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/ivtv/ivtv-driver.c
blob: ab7c3f6d3531c68b009822731944830168fdcccf (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
/*
    ivtv driver initialization and card probing
    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
    Copyright (C) 2004  Chris Kennedy <c@groovy.org>
    Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>

    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* Main Driver file for the ivtv project:
 * Driver for the Conexant CX23415/CX23416 chip.
 * Author: Kevin Thayer (nufan_wfk at yahoo.com)
 * License: GPL
 * http://www.ivtvdriver.org
 *
 * -----
 * MPG600/MPG160 support by  T.Adachi <tadachi@tadachi-net.com>
 *                      and Takeru KOMORIYA<komoriya@paken.org>
 *
 * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
 *                using information provided by Jiun-Kuei Jung @ AVerMedia.
 *
 * Kurouto Sikou CX23416GYC-STVLP tested by K.Ohta <alpha292@bremen.or.jp>
 *                using information from T.Adachi,Takeru KOMORIYA and others :-)
 *
 * Nagase TRANSGEAR 5000TV, Aopen VA2000MAX-STN6 and I/O data GV-MVP/RX
 *                version by T.Adachi. Special thanks  Mr.Suzuki
 */

#include "ivtv-driver.h"
#include "ivtv-version.h"
#include "ivtv-fileops.h"
#include "ivtv-i2c.h"
#include "ivtv-firmware.h"
#include "ivtv-queue.h"
#include "ivtv-udma.h"
#include "ivtv-irq.h"
#include "ivtv-mailbox.h"
#include "ivtv-streams.h"
#include "ivtv-ioctl.h"
#include "ivtv-cards.h"
#include "ivtv-vbi.h"
#include "ivtv-audio.h"
#include "ivtv-gpio.h"
#include "ivtv-yuv.h"

#include <linux/vermagic.h>
#include <media/tveeprom.h>
#include <media/v4l2-chip-ident.h>

/* var to keep track of the number of array elements in use */
int ivtv_cards_active = 0;

/* If you have already X v4l cards, then set this to X. This way
   the device numbers stay matched. Example: you have a WinTV card
   without radio and a PVR-350 with. Normally this would give a
   video1 device together with a radio0 device for the PVR. By
   setting this to 1 you ensure that radio0 is now also radio1. */
int ivtv_first_minor = 0;

/* Master variable for all ivtv info */
struct ivtv *ivtv_cards[IVTV_MAX_CARDS];

/* Protects ivtv_cards_active */
DEFINE_SPINLOCK(ivtv_cards_lock);

/* add your revision and whatnot here */
static struct pci_device_id ivtv_pci_tbl[] __devinitdata = {
	{PCI_VENDOR_ID_ICOMP, PCI_DEVICE_ID_IVTV15,
	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
	{PCI_VENDOR_ID_ICOMP, PCI_DEVICE_ID_IVTV16,
	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
	{0,}
};

MODULE_DEVICE_TABLE(pci,ivtv_pci_tbl);

const u32 yuv_offset[4] = {
	IVTV_YUV_BUFFER_OFFSET,
	IVTV_YUV_BUFFER_OFFSET_1,
	IVTV_YUV_BUFFER_OFFSET_2,
	IVTV_YUV_BUFFER_OFFSET_3
};

/* Parameter declarations */
static int cardtype[IVTV_MAX_CARDS];
static int tuner[IVTV_MAX_CARDS] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 };
static int radio[IVTV_MAX_CARDS] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 };

static int cardtype_c = 1;
static int tuner_c = 1;
static int radio_c = 1;
static char pal[] = "--";
static char secam[] = "--";
static char ntsc[] = "-";

/* Buffers */
static int enc_mpg_buffers = IVTV_DEFAULT_ENC_MPG_BUFFERS;
static int enc_yuv_buffers = IVTV_DEFAULT_ENC_YUV_BUFFERS;
static int enc_vbi_buffers = IVTV_DEFAULT_ENC_VBI_BUFFERS;
static int enc_pcm_buffers = IVTV_DEFAULT_ENC_PCM_BUFFERS;
static int dec_mpg_buffers = IVTV_DEFAULT_DEC_MPG_BUFFERS;
static int dec_yuv_buffers = IVTV_DEFAULT_DEC_YUV_BUFFERS;
static int dec_vbi_buffers = IVTV_DEFAULT_DEC_VBI_BUFFERS;

static int ivtv_yuv_mode = 0;
static int ivtv_yuv_threshold=-1;
static int ivtv_pci_latency = 1;

int ivtv_debug = 0;

static int newi2c = -1;

module_param_array(tuner, int, &tuner_c, 0644);
module_param_array(radio, bool, &radio_c, 0644);
module_param_array(cardtype, int, &cardtype_c, 0644);
module_param_string(pal, pal, sizeof(pal), 0644);
module_param_string(secam, secam, sizeof(secam), 0644);
module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
module_param_named(debug,ivtv_debug, int, 0644);
module_param(ivtv_pci_latency, int, 0644);
module_param(ivtv_yuv_mode, int, 0644);
module_param(ivtv_yuv_threshold, int, 0644);
module_param(ivtv_first_minor, int, 0644);

module_param(enc_mpg_buffers, int, 0644);
module_param(enc_yuv_buffers, int, 0644);
module_param(enc_vbi_buffers, int, 0644);
module_param(enc_pcm_buffers, int, 0644);
module_param(dec_mpg_buffers, int, 0644);
module_param(dec_yuv_buffers, int, 0644);
module_param(dec_vbi_buffers, int, 0644);

module_param(newi2c, int, 0644);

MODULE_PARM_DESC(tuner, "Tuner type selection,\n"
			"\t\t\tsee tuner.h for values");
MODULE_PARM_DESC(radio,
		 "Enable or disable the radio. Use only if autodetection\n"
		 "\t\t\tfails. 0 = disable, 1 = enable");
MODULE_PARM_DESC(cardtype,
		 "Only use this option if your card is not detected properly.\n"
		 "\t\tSpecify card type:\n"
		 "\t\t\t 1 = WinTV PVR 250\n"
		 "\t\t\t 2 = WinTV PVR 350\n"
		 "\t\t\t 3 = WinTV PVR-150 or PVR-500\n"
		 "\t\t\t 4 = AVerMedia M179\n"
		 "\t\t\t 5 = YUAN MPG600/Kuroutoshikou iTVC16-STVLP\n"
		 "\t\t\t 6 = YUAN MPG160/Kuroutoshikou iTVC15-STVLP\n"
		 "\t\t\t 7 = YUAN PG600/DIAMONDMM PVR-550 (CX Falcon 2)\n"
		 "\t\t\t 8 = Adaptec AVC-2410\n"
		 "\t\t\t 9 = Adaptec AVC-2010\n"
		 "\t\t\t10 = NAGASE TRANSGEAR 5000TV\n"
		 "\t\t\t11 = AOpen VA2000MAX-STN6\n"
		 "\t\t\t12 = YUAN MPG600GR/Kuroutoshikou CX23416GYC-STVLP\n"
		 "\t\t\t13 = I/O Data GV-MVP/RX\n"
		 "\t\t\t14 = I/O Data GV-MVP/RX2E\n"
		 "\t\t\t15 = GOTVIEW PCI DVD\n"
		 "\t\t\t16 = GOTVIEW PCI DVD2 Deluxe\n"
		 "\t\t\t17 = Yuan MPC622\n"
		 "\t\t\t18 = Digital Cowboy DCT-MTVP1\n"
#ifdef HAVE_XC3028
		 "\t\t\t19 = Yuan PG600V2/GotView PCI DVD Lite/Club3D ZAP-TV1x01\n"
#endif
		 "\t\t\t 0 = Autodetect (default)\n"
		 "\t\t\t-1 = Ignore this card\n\t\t");
MODULE_PARM_DESC(pal, "Set PAL standard: B, G, H, D, K, I, M, N, Nc, 60");
MODULE_PARM_DESC(secam, "Set SECAM standard: B, G, H, D, K, L, LC");
MODULE_PARM_DESC(ntsc, "Set NTSC standard: M, J, K");
MODULE_PARM_DESC(debug,
		 "Debug level (bitmask). Default: errors only\n"
		 "\t\t\t(debug = 511 gives full debugging)");
MODULE_PARM_DESC(ivtv_pci_latency,
		 "Change the PCI latency to 64 if lower: 0 = No, 1 = Yes,\n"
		 "\t\t\tDefault: Yes");
MODULE_PARM_DESC(ivtv_yuv_mode,
		 "Specify the yuv playback mode:\n"
		 "\t\t\t0 = interlaced\n\t\t\t1 = progressive\n\t\t\t2 = auto\n"
		 "\t\t\tDefault: 0 (interlaced)");
MODULE_PARM_DESC(ivtv_yuv_threshold,
		 "If ivtv_yuv_mode is 2 (auto) then playback content as\n\t\tprogressive if src height <= ivtv_yuvthreshold\n"
		 "\t\t\tDefault: 480");;
MODULE_PARM_DESC(enc_mpg_buffers,
		 "Encoder MPG Buffers (in MB)\n"
		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_MPG_BUFFERS));
MODULE_PARM_DESC(enc_yuv_buffers,
		 "Encoder YUV Buffers (in MB)\n"
		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_YUV_BUFFERS));
MODULE_PARM_DESC(enc_vbi_buffers,
		 "Encoder VBI Buffers (in MB)\n"
		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_VBI_BUFFERS));
MODULE_PARM_DESC(enc_pcm_buffers,
		 "Encoder PCM buffers (in MB)\n"
		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_ENC_PCM_BUFFERS));
MODULE_PARM_DESC(dec_mpg_buffers,
		 "Decoder MPG buffers (in MB)\n"
		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_MPG_BUFFERS));
MODULE_PARM_DESC(dec_yuv_buffers,
		 "Decoder YUV buffers (in MB)\n"
		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_YUV_BUFFERS));
MODULE_PARM_DESC(dec_vbi_buffers,
		 "Decoder VBI buffers (in MB)\n"
		 "\t\t\tDefault: " __stringify(IVTV_DEFAULT_DEC_VBI_BUFFERS));
MODULE_PARM_DESC(newi2c,
		 "Use new I2C implementation\n"
		 "\t\t\t-1 is autodetect, 0 is off, 1 is on\n"
		 "\t\t\tDefault is autodetect");

MODULE_PARM_DESC(ivtv_first_minor, "Set minor assigned to first card");

MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil");
MODULE_DESCRIPTION("CX23415/CX23416 driver");
MODULE_SUPPORTED_DEVICE
    ("CX23415/CX23416 MPEG2 encoder (WinTV PVR-150/250/350/500,\n"
		"\t\t\tYuan MPG series and similar)");
MODULE_LICENSE("GPL");

MODULE_VERSION(IVTV_VERSION);

void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask)
{
	itv->irqmask &= ~mask;
	write_reg_sync(itv->irqmask, IVTV_REG_IRQMASK);
}

void ivtv_set_irq_mask(struct ivtv *itv, u32 mask)
{
	itv->irqmask |= mask;
	write_reg_sync(itv->irqmask, IVTV_REG_IRQMASK);
}

int ivtv_set_output_mode(struct ivtv *itv, int mode)
{
    int old_mode;

    spin_lock(&itv->lock);
    old_mode = itv->output_mode;
    if (old_mode == 0)
	itv->output_mode = old_mode = mode;
    spin_unlock(&itv->lock);
    return old_mode;
}

struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv)
{
	switch (itv->output_mode) {
	case OUT_MPG:
		return &itv->streams[IVTV_DEC_STREAM_TYPE_MPG];
	case OUT_YUV:
		return &itv->streams[IVTV_DEC_STREAM_TYPE_YUV];
	default:
		return NULL;
	}
}

int ivtv_waitq(wait_queue_head_t *waitq)
{
	DEFINE_WAIT(wait);

	prepare_to_wait(waitq, &wait, TASK_INTERRUPTIBLE);
	schedule();
	finish_wait(waitq, &wait);
	return signal_pending(current) ? -EINTR : 0;
}

/* Generic utility functions */
int ivtv_sleep_timeout(int timeout, int intr)
{
	int ret;

	do {
		set_current_state(intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
		timeout = schedule_timeout(timeout);
		if (intr && (ret = signal_pending(current)))
			return ret;
	} while (timeout);
	return 0;
}

/* Release ioremapped memory */
static void ivtv_iounmap(struct ivtv *itv)
{
	if (itv == NULL)
		return;

	/* Release registers memory */
	if (itv->reg_mem != NULL) {
		IVTV_DEBUG_INFO("releasing reg_mem\n");
		iounmap(itv->reg_mem);
		itv->reg_mem = NULL;
	}
	/* Release io memory */
	if (itv->has_cx23415 && itv->dec_mem != NULL) {
		IVTV_DEBUG_INFO("releasing dec_mem\n");
		iounmap(itv->dec_mem);
	}
	itv->dec_mem = NULL;

	/* Release io memory */
	if (itv->enc_mem != NULL) {
		IVTV_DEBUG_INFO("releasing enc_mem\n");
		iounmap(itv->enc_mem);
		itv->enc_mem = NULL;
	}
}

/* Hauppauge card? get values from tveeprom */
void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv)
{
	u8 eedata[256];

	itv->i2c_client.addr = 0xA0 >> 1;
	tveeprom_read(&itv->i2c_client, eedata, sizeof(eedata));
	tveeprom_hauppauge_analog(&itv->i2c_client, tv, eedata);
}

static void ivtv_process_eeprom(struct ivtv *itv)
{
	struct tveeprom tv;
	int pci_slot = PCI_SLOT(itv->dev->devfn);

	ivtv_read_eeprom(itv, &tv);

	/* Many thanks to Steven Toth from Hauppauge for providing the
	   model numbers */
	switch (tv.model) {
		/* In a few cases the PCI subsystem IDs do not correctly
		   identify the card. A better method is to check the
		   model number from the eeprom instead. */
		case 30012 ... 30039:  /* Low profile PVR250 */
		case 32000 ... 32999:
		case 48000 ... 48099:  /* 48??? range are PVR250s with a cx23415 */
		case 48400 ... 48599:
			itv->card = ivtv_get_card(IVTV_CARD_PVR_250);
			break;
		case 48100 ... 48399:
		case 48600 ... 48999:
			itv->card = ivtv_get_card(IVTV_CARD_PVR_350);
			break;
		case 23000 ... 23999:  /* PVR500 */
		case 25000 ... 25999:  /* Low profile PVR150 */
		case 26000 ... 26999:  /* Regular PVR150 */
			itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
			break;
		case 0:
			IVTV_ERR("Invalid EEPROM\n");
			return;
		default:
			IVTV_ERR("Unknown model %d, defaulting to PVR-150\n", tv.model);
			itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
			break;
	}

	switch (tv.model) {
		/* Old style PVR350 (with an saa7114) uses this input for
		   the tuner. */
		case 48254:
			itv->card = ivtv_get_card(IVTV_CARD_PVR_350_V1);
			break;
		default:
			break;
	}

	itv->v4l2_cap = itv->card->v4l2_capabilities;
	itv->card_name = itv->card->name;

	/* If this is a PVR500 then it should be possible to detect whether it is the
	   first or second unit by looking at the subsystem device ID: is bit 4 is
	   set, then it is the second unit (according to info from Hauppauge).

	   However, while this works for most cards, I have seen a few PVR500 cards
	   where both units have the same subsystem ID.

	   So instead I look at the reported 'PCI slot' (which is the slot on the PVR500
	   PCI bridge) and if it is 8, then it is assumed to be the first unit, otherwise
	   it is the second unit. It is possible that it is a different slot when ivtv is
	   used in Xen, in that case I ignore this card here. The worst that can happen
	   is that the card presents itself with a non-working radio device.

	   This detection is needed since the eeprom reports incorrectly that a radio is
	   present on the second unit. */
	if (tv.model / 1000 == 23) {
		itv->card_name = "WinTV PVR 500";
		if (pci_slot == 8 || pci_slot == 9) {
			int is_first = (pci_slot & 1) == 0;

			itv->card_name = is_first ? "WinTV PVR 500 (unit #1)" :
						    "WinTV PVR 500 (unit #2)";
			if (!is_first) {
				IVTV_INFO("Correcting tveeprom data: no radio present on second unit\n");
				tv.has_radio = 0;
			}
		}
	}
	IVTV_INFO("Autodetected %s\n", itv->card_name);

	switch (tv.tuner_hauppauge_model) {
		case 85:
		case 99:
		case 112:
			itv->pvr150_workaround = 1;
			break;
		default:
			break;
	}
	if (tv.tuner_type == TUNER_ABSENT)
		IVTV_ERR("tveeprom cannot autodetect tuner!");

	if (itv->options.tuner == -1)
		itv->options.tuner = tv.tuner_type;
	if (itv->options.radio == -1)
		itv->options.radio = (tv.has_radio != 0);
	/* only enable newi2c if an IR blaster is present */
	/* FIXME: for 2.6.20 the test against 2 should be removed */
	if (itv->options.newi2c == -1 && tv.has_ir != -1 && tv.has_ir != 2) {
		itv->options.newi2c = (tv.has_ir & 2) ? 1 : 0;
		if (itv->options.newi2c) {
		    IVTV_INFO("reopen i2c bus for IR-blaster support\n");
		    exit_ivtv_i2c(itv);
		    init_ivtv_i2c(itv);
		}
	}

	if (itv->std != 0)
		/* user specified tuner standard */
		return;

	/* autodetect tuner standard */
	if (tv.tuner_formats & V4L2_STD_PAL) {
		IVTV_DEBUG_INFO("PAL tuner detected\n");
		itv->std |= V4L2_STD_PAL_BG | V4L2_STD_PAL_H;
	} else if (tv.tuner_formats & V4L2_STD_NTSC) {
		IVTV_DEBUG_INFO("NTSC tuner detected\n");
		itv->std |= V4L2_STD_NTSC_M;
	} else if (tv.tuner_formats & V4L2_STD_SECAM) {
		IVTV_DEBUG_INFO("SECAM tuner detected\n");
		itv->std |= V4L2_STD_SECAM_L;
	} else {
		IVTV_INFO("No tuner detected, default to NTSC-M\n");
		itv->std |= V4L2_STD_NTSC_M;
	}
}

static v4l2_std_id ivtv_parse_std(struct ivtv *itv)
{
	switch (pal[0]) {
		case '6':
			return V4L2_STD_PAL_60;
		case 'b':
		case 'B':
		case 'g':
		case 'G':
			return V4L2_STD_PAL_BG;
		case 'h':
		case 'H':
			return V4L2_STD_PAL_H;
		case 'n':
		case 'N':
			if (pal[1] == 'c' || pal[1] == 'C')
				return V4L2_STD_PAL_Nc;
			return V4L2_STD_PAL_N;
		case 'i':
		case 'I':
			return V4L2_STD_PAL_I;
		case 'd':
		case 'D':
		case 'k':
		case 'K':
			return V4L2_STD_PAL_DK;
		case 'M':
		case 'm':
			return V4L2_STD_PAL_M;
		case '-':
			break;
		default:
			IVTV_WARN("pal= argument not recognised\n");
			return 0;
	}

	switch (secam[0]) {
		case 'b':
		case 'B':
		case 'g':
		case 'G':
		case 'h':
		case 'H':
			return V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
		case 'd':
		case 'D':
		case 'k':
		case 'K':
			return V4L2_STD_SECAM_DK;
		case 'l':
		case 'L':
			if (secam[1] == 'C' || secam[1] == 'c')
				return V4L2_STD_SECAM_LC;
			return V4L2_STD_SECAM_L;
		case '-':
			break;
		default:
			IVTV_WARN("secam= argument not recognised\n");
			return 0;
	}

	switch (ntsc[0]) {
		case 'm':
		case 'M':
			return V4L2_STD_NTSC_M;
		case 'j':
		case 'J':
			return V4L2_STD_NTSC_M_JP;
		case 'k':
		case 'K':
			return V4L2_STD_NTSC_M_KR;
		case '-':
			break;
		default:
			IVTV_WARN("ntsc= argument not recognised\n");
			return 0;
	}

	/* no match found */
	return 0;
}

static void ivtv_process_options(struct ivtv *itv)
{
	const char *chipname;
	int i, j;

	itv->options.megabytes[IVTV_ENC_STREAM_TYPE_MPG] = enc_mpg_buffers;
	itv->options.megabytes[IVTV_ENC_STREAM_TYPE_YUV] = enc_yuv_buffers;
	itv->options.megabytes[IVTV_ENC_STREAM_TYPE_VBI] = enc_vbi_buffers;
	itv->options.megabytes[IVTV_ENC_STREAM_TYPE_PCM] = enc_pcm_buffers;
	itv->options.megabytes[IVTV_DEC_STREAM_TYPE_MPG] = dec_mpg_buffers;
	itv->options.megabytes[IVTV_DEC_STREAM_TYPE_YUV] = dec_yuv_buffers;
	itv->options.megabytes[IVTV_DEC_STREAM_TYPE_VBI] = dec_vbi_buffers;
	itv->options.cardtype = cardtype[itv->num];
	itv->options.tuner = tuner[itv->num];
	itv->options.radio = radio[itv->num];
	itv->options.newi2c = newi2c;

	itv->std = ivtv_parse_std(itv);
	itv->has_cx23415 = (itv->dev->device == PCI_DEVICE_ID_IVTV15);
	chipname = itv->has_cx23415 ? "cx23415" : "cx23416";
	if (itv->options.cardtype == -1) {
		IVTV_INFO("Ignore card (detected %s based chip)\n", chipname);
		return;
	}
	if ((itv->card = ivtv_get_card(itv->options.cardtype - 1))) {
		IVTV_INFO("User specified %s card (detected %s based chip)\n",
				itv->card->name, chipname);
	} else if (itv->options.cardtype != 0) {
		IVTV_ERR("Unknown user specified type, trying to autodetect card\n");
	}
	if (itv->card == NULL) {
		if (itv->dev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE ||
		    itv->dev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE_ALT1 ||
		    itv->dev->subsystem_vendor == IVTV_PCI_ID_HAUPPAUGE_ALT2) {
			itv->card = ivtv_get_card(itv->has_cx23415 ? IVTV_CARD_PVR_350 : IVTV_CARD_PVR_150);
			IVTV_INFO("Autodetected Hauppauge card (%s based)\n",
					chipname);
		}
	}
	if (itv->card == NULL) {
		for (i = 0; (itv->card = ivtv_get_card(i)); i++) {
			if (itv->card->pci_list == NULL)
				continue;
			for (j = 0; itv->card->pci_list[j].device; j++) {
				if (itv->dev->device !=
				    itv->card->pci_list[j].device)
					continue;
				if (itv->dev->subsystem_vendor !=
				    itv->card->pci_list[j].subsystem_vendor)
					continue;
				if (itv->dev->subsystem_device !=
				    itv->card->pci_list[j].subsystem_device)
					continue;
				IVTV_INFO("Autodetected %s card (%s based)\n",
						itv->card->name, chipname);
				goto done;
			}
		}
	}
done:

	if (itv->card == NULL) {
		itv->card = ivtv_get_card(IVTV_CARD_PVR_150);
		IVTV_ERR("Unknown card: vendor/device: %04x/%04x\n",
		     itv->dev->vendor, itv->dev->device);
		IVTV_ERR("              subsystem vendor/device: %04x/%04x\n",
		     itv->dev->subsystem_vendor, itv->dev->subsystem_device);
		IVTV_ERR("              %s based\n", chipname);
		IVTV_ERR("Defaulting to %s card\n", itv->card->name);
		IVTV_ERR("Please mail the vendor/device and subsystem vendor/device IDs and what kind of\n");
		IVTV_ERR("card you have to the ivtv-devel mailinglist (www.ivtvdriver.org)\n");
		IVTV_ERR("Prefix your subject line with [UNKNOWN CARD].\n");
	}
	itv->v4l2_cap = itv->card->v4l2_capabilities;
	itv->card_name = itv->card->name;
}

/* Precondition: the ivtv structure has been memset to 0. Only
   the dev and num fields have been filled in.
   No assumptions on the card type may be made here (see ivtv_init_struct2
   for that).
 */
static int __devinit ivtv_init_struct1(struct ivtv *itv)
{
	itv->base_addr = pci_resource_start(itv->dev, 0);
	itv->enc_mbox.max_mbox = 2; /* the encoder has 3 mailboxes (0-2) */
	itv->dec_mbox.max_mbox = 1; /* the decoder has 2 mailboxes (0-1) */

	mutex_init(&itv->serialize_lock);
	mutex_init(&itv->i2c_bus_lock);
	mutex_init(&itv->udma.lock);

	spin_lock_init(&itv->lock);
	spin_lock_init(&itv->dma_reg_lock);

	itv->irq_work_queues = create_workqueue(itv->name);
	if (itv->irq_work_queues == NULL) {
		IVTV_ERR("Could not create ivtv workqueue\n");
		return -1;
	}

	INIT_WORK(&itv->irq_work_queue, ivtv_irq_work_handler);

	/* start counting open_id at 1 */
	itv->open_id = 1;

	/* Initial settings */
	cx2341x_fill_defaults(&itv->params);
	itv->params.port = CX2341X_PORT_MEMORY;
	itv->params.capabilities = CX2341X_CAP_HAS_SLICED_VBI;
	init_waitqueue_head(&itv->cap_w);
	init_waitqueue_head(&itv->event_waitq);
	init_waitqueue_head(&itv->vsync_waitq);
	init_waitqueue_head(&itv->dma_waitq);
	init_timer(&itv->dma_timer);
	itv->dma_timer.function = ivtv_unfinished_dma;
	itv->dma_timer.data = (unsigned long)itv;

	itv->cur_dma_stream = -1;
	itv->cur_pio_stream = -1;
	itv->audio_stereo_mode = AUDIO_STEREO;
	itv->audio_bilingual_mode = AUDIO_MONO_LEFT;

	/* Ctrls */
	itv->speed = 1000;

	/* VBI */
	itv->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
	itv->vbi.sliced_in = &itv->vbi.in.fmt.sliced;

	/* OSD */
	itv->osd_global_alpha_state = 1;
	itv->osd_global_alpha = 255;

	/* YUV */
	atomic_set(&itv->yuv_info.next_dma_frame, -1);
	itv->yuv_info.lace_mode = ivtv_yuv_mode;
	itv->yuv_info.lace_threshold = ivtv_yuv_threshold;
	return 0;
}

/* Second initialization part. Here the card type has been
   autodetected. */
static void __devinit ivtv_init_struct2(struct ivtv *itv)
{
	int i;

	for (i = 0; i < IVTV_CARD_MAX_VIDEO_INPUTS; i++)
		if (itv->card->video_inputs[i].video_type == 0)
			break;
	itv->nof_inputs = i;
	for (i = 0; i < IVTV_CARD_MAX_AUDIO_INPUTS; i++)
		if (itv->card->audio_inputs[i].audio_type == 0)
			break;
	itv->nof_audio_inputs = i;

	/* 0x00EF = saa7114(239) 0x00F0 = saa7115(240) 0x0106 = micro */
	if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X))
		itv->digitizer = 0xF1;
	else if (itv->card->hw_all & IVTV_HW_SAA7114)
		itv->digitizer = 0xEF;
	else /* cx25840 */
		itv->digitizer = 0x140;

	if (itv->card->hw_all & IVTV_HW_CX25840) {
		itv->vbi.sliced_size = 288;  /* multiple of 16, real size = 284 */
	} else {
		itv->vbi.sliced_size = 64;   /* multiple of 16, real size = 52 */
	}

	/* Find tuner input */
	for (i = 0; i < itv->nof_inputs; i++) {
		if (itv->card->video_inputs[i].video_type ==
				IVTV_CARD_INPUT_VID_TUNER)
			break;
	}
	if (i == itv->nof_inputs)
		i = 0;
	itv->active_input = i;
	itv->audio_input = itv->card->video_inputs[i].audio_index;
	if (itv->card->hw_all & IVTV_HW_CX25840)
		itv->video_dec_func = ivtv_cx25840;
	else if (itv->card->hw_all & IVTV_HW_SAA717X)
		itv->video_dec_func = ivtv_saa717x;
	else
		itv->video_dec_func = ivtv_saa7115;
}

static int ivtv_setup_pci(struct ivtv *itv, struct pci_dev *dev,
			  const struct pci_device_id *pci_id)
{
	u16 cmd;
	unsigned char pci_latency;

	IVTV_DEBUG_INFO("Enabling pci device\n");

	if (pci_enable_device(dev)) {
		IVTV_ERR("Can't enable device %d!\n", itv->num);
		return -EIO;
	}
	if (pci_set_dma_mask(dev, 0xffffffff)) {
		IVTV_ERR("No suitable DMA available on card %d.\n", itv->num);
		return -EIO;
	}
	if (!request_mem_region(itv->base_addr, IVTV_ENCODER_SIZE, "ivtv encoder")) {
		IVTV_ERR("Cannot request encoder memory region on card %d.\n", itv->num);
		return -EIO;
	}

	if (!request_mem_region(itv->base_addr + IVTV_REG_OFFSET,
				IVTV_REG_SIZE, "ivtv registers")) {
		IVTV_ERR("Cannot request register memory region on card %d.\n", itv->num);
		release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
		return -EIO;
	}

	if (itv->has_cx23415 &&
	    !request_mem_region(itv->base_addr + IVTV_DECODER_OFFSET,
				IVTV_DECODER_SIZE, "ivtv decoder")) {
		IVTV_ERR("Cannot request decoder memory region on card %d.\n", itv->num);
		release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
		release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
		return -EIO;
	}

	/* Check for bus mastering */
	pci_read_config_word(dev, PCI_COMMAND, &cmd);
	if (!(cmd & PCI_COMMAND_MASTER)) {
		IVTV_DEBUG_INFO("Attempting to enable Bus Mastering\n");
		pci_set_master(dev);
		pci_read_config_word(dev, PCI_COMMAND, &cmd);
		if (!(cmd & PCI_COMMAND_MASTER)) {
			IVTV_ERR("Bus Mastering is not enabled\n");
			return -ENXIO;
		}
	}
	IVTV_DEBUG_INFO("Bus Mastering Enabled.\n");

	pci_read_config_byte(dev, PCI_CLASS_REVISION, &itv->card_rev);
	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &pci_latency);

	if (pci_latency < 64 && ivtv_pci_latency) {
		IVTV_INFO("Unreasonably low latency timer, "
			       "setting to 64 (was %d)\n", pci_latency);
		pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64);
		pci_read_config_byte(dev, PCI_LATENCY_TIMER, &pci_latency);
	}
	/* This config space value relates to DMA latencies. The
	   default value 0x8080 is too low however and will lead
	   to DMA errors. 0xffff is the max value which solves
	   these problems. */
	pci_write_config_dword(dev, 0x40, 0xffff);

	IVTV_DEBUG_INFO("%d (rev %d) at %02x:%02x.%x, "
		   "irq: %d, latency: %d, memory: 0x%lx\n",
		   itv->dev->device, itv->card_rev, dev->bus->number,
		   PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn),
		   itv->dev->irq, pci_latency, (unsigned long)itv->base_addr);

	return 0;
}

static void ivtv_request_module(struct ivtv *itv, const char *name)
{
	if (request_module(name) != 0) {
		IVTV_ERR("Failed to load module %s\n", name);
	} else {
		IVTV_DEBUG_INFO("Loaded module %s\n", name);
	}
}

static void ivtv_load_and_init_modules(struct ivtv *itv)
{
	struct v4l2_control ctrl;
	u32 hw = itv->card->hw_all;
	int i;

	/* load modules */
#ifndef CONFIG_VIDEO_TUNER
	if (hw & IVTV_HW_TUNER) {
		ivtv_request_module(itv, "tuner");
#ifdef HAVE_XC3028
		if (itv->options.tuner == TUNER_XCEIVE_XC3028)
			ivtv_request_module(itv, "xc3028-tuner");
#endif
	}
#endif
#ifndef CONFIG_VIDEO_CX25840
	if (hw & IVTV_HW_CX25840)
		ivtv_request_module(itv, "cx25840");
#endif
#ifndef CONFIG_VIDEO_SAA711X
	if (hw & IVTV_HW_SAA711X)
		ivtv_request_module(itv, "saa7115");
#endif
#ifndef CONFIG_VIDEO_SAA7127
	if (hw & IVTV_HW_SAA7127)
		ivtv_request_module(itv, "saa7127");
#endif
	if (hw & IVTV_HW_SAA717X)
		ivtv_request_module(itv, "saa717x");
#ifndef CONFIG_VIDEO_UPD64031A
	if (hw & IVTV_HW_UPD64031A)
		ivtv_request_module(itv, "upd64031a");
#endif
#ifndef CONFIG_VIDEO_UPD64083
	if (hw & IVTV_HW_UPD6408X)
		ivtv_request_module(itv, "upd64083");
#endif
#ifndef CONFIG_VIDEO_MSP3400
	if (hw & IVTV_HW_MSP34XX)
		ivtv_request_module(itv, "msp3400");
#endif
	if (hw & IVTV_HW_TVAUDIO)
		ivtv_request_module(itv, "tvaudio");
#ifndef CONFIG_VIDEO_WM8775
	if (hw & IVTV_HW_WM8775)
		ivtv_request_module(itv, "wm8775");
#endif
#ifndef CONFIG_VIDEO_WM8739
	if (hw & IVTV_HW_WM8739)
		ivtv_request_module(itv, "wm8739");
#endif
#ifndef CONFIG_VIDEO_CS53L32A
	if (hw & IVTV_HW_CS53L32A)
		ivtv_request_module(itv, "cs53l32a");
#endif

	/* check which i2c devices are actually found */
	for (i = 0; i < 32; i++) {
		u32 device = 1 << i;

		if (!(device & hw))
			continue;
		if (device == IVTV_HW_GPIO) {
			/* GPIO is always available */
			itv->hw_flags |= IVTV_HW_GPIO;
			continue;
		}
		if (ivtv_i2c_hw_addr(itv, device) > 0)
			itv->hw_flags |= device;
	}

	hw = itv->hw_flags;

	if (itv->card->type == IVTV_CARD_CX23416GYC) {
		/* Several variations of this card exist, detect which card
		   type should be used. */
		if ((hw & (IVTV_HW_UPD64031A | IVTV_HW_UPD6408X)) == 0)
			itv->card = ivtv_get_card(IVTV_CARD_CX23416GYC_NOGRYCS);
		else if ((hw & IVTV_HW_UPD64031A) == 0)
			itv->card = ivtv_get_card(IVTV_CARD_CX23416GYC_NOGR);
	}

	if (hw & IVTV_HW_CX25840) {
		/* CX25840_CID_ENABLE_PVR150_WORKAROUND */
		ctrl.id = V4L2_CID_PRIVATE_BASE;
		ctrl.value = itv->pvr150_workaround;
		itv->video_dec_func(itv, VIDIOC_S_CTRL, &ctrl);

		itv->vbi.raw_decoder_line_size = 1444;
		itv->vbi.raw_decoder_sav_odd_field = 0x20;
		itv->vbi.raw_decoder_sav_even_field = 0x60;
		itv->vbi.sliced_decoder_line_size = 272;
		itv->vbi.sliced_decoder_sav_odd_field = 0xB0;
		itv->vbi.sliced_decoder_sav_even_field = 0xF0;
	}

	if (hw & IVTV_HW_SAA711X) {
		struct v4l2_chip_ident v = { V4L2_CHIP_MATCH_I2C_DRIVER, I2C_DRIVERID_SAA711X };

		/* determine the exact saa711x model */
		itv->hw_flags &= ~IVTV_HW_SAA711X;

		ivtv_saa7115(itv, VIDIOC_G_CHIP_IDENT, &v);
		if (v.ident == V4L2_IDENT_SAA7114) {
			itv->hw_flags |= IVTV_HW_SAA7114;
			/* VBI is not yet supported by the saa7114 driver. */
			itv->v4l2_cap &= ~(V4L2_CAP_SLICED_VBI_CAPTURE|V4L2_CAP_VBI_CAPTURE);
		}
		else {
			itv->hw_flags |= IVTV_HW_SAA7115;
		}
		itv->vbi.raw_decoder_line_size = 1443;
		itv->vbi.raw_decoder_sav_odd_field = 0x25;
		itv->vbi.raw_decoder_sav_even_field = 0x62;
		itv->vbi.sliced_decoder_line_size = 51;
		itv->vbi.sliced_decoder_sav_odd_field = 0xAB;
		itv->vbi.sliced_decoder_sav_even_field = 0xEC;
	}

	if (hw & IVTV_HW_SAA717X) {
		itv->vbi.raw_decoder_line_size = 1443;
		itv->vbi.raw_decoder_sav_odd_field = 0x25;
		itv->vbi.raw_decoder_sav_even_field = 0x62;
		itv->vbi.sliced_decoder_line_size = 51;
		itv->vbi.sliced_decoder_sav_odd_field = 0xAB;
		itv->vbi.sliced_decoder_sav_even_field = 0xEC;
	}
}

static int __devinit ivtv_probe(struct pci_dev *dev,
				const struct pci_device_id *pci_id)
{
	int retval = 0;
	int video_input;
	int yuv_buf_size;
	int vbi_buf_size;
	int fw_retry_count = 3;
	struct ivtv *itv;
	struct v4l2_frequency vf;

	spin_lock(&ivtv_cards_lock);

	/* Make sure we've got a place for this card */
	if (ivtv_cards_active == IVTV_MAX_CARDS) {
		printk(KERN_ERR "ivtv:  Maximum number of cards detected (%d).\n",
			      ivtv_cards_active);
		spin_unlock(&ivtv_cards_lock);
		return -ENOMEM;
	}

	itv = kzalloc(sizeof(struct ivtv), GFP_ATOMIC);
	if (itv == 0) {
		spin_unlock(&ivtv_cards_lock);
		return -ENOMEM;
	}
	ivtv_cards[ivtv_cards_active] = itv;
	itv->dev = dev;
	itv->num = ivtv_cards_active++;
	snprintf(itv->name, sizeof(itv->name) - 1, "ivtv%d", itv->num);
	if (itv->num) {
		printk(KERN_INFO "ivtv:  ======================  NEXT CARD  ======================\n");
	}

	spin_unlock(&ivtv_cards_lock);

	ivtv_process_options(itv);
	if (itv->options.cardtype == -1) {
		retval = -ENODEV;
		goto err;
	}
	if (ivtv_init_struct1(itv)) {
		retval = -ENOMEM;
		goto err;
	}

	IVTV_DEBUG_INFO("base addr: 0x%08x\n", itv->base_addr);

	/* PCI Device Setup */
	if ((retval = ivtv_setup_pci(itv, dev, pci_id)) != 0) {
		if (retval == -EIO)
			goto free_workqueue;
		else if (retval == -ENXIO)
			goto free_mem;
	}
	/* save itv in the pci struct for later use */
	pci_set_drvdata(dev, itv);

	/* map io memory */
	IVTV_DEBUG_INFO("attempting ioremap at 0x%08x len 0x%08x\n",
		   itv->base_addr + IVTV_ENCODER_OFFSET, IVTV_ENCODER_SIZE);
	itv->enc_mem = ioremap_nocache(itv->base_addr + IVTV_ENCODER_OFFSET,
				       IVTV_ENCODER_SIZE);
	if (!itv->enc_mem) {
		IVTV_ERR("ioremap failed, perhaps increasing __VMALLOC_RESERVE in page.h\n");
		IVTV_ERR("or disabling CONFIG_HIMEM4G into the kernel would help\n");
		retval = -ENOMEM;
		goto free_mem;
	}

	if (itv->has_cx23415) {
		IVTV_DEBUG_INFO("attempting ioremap at 0x%08x len 0x%08x\n",
				itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
		itv->dec_mem = ioremap_nocache(itv->base_addr + IVTV_DECODER_OFFSET,
				IVTV_DECODER_SIZE);
		if (!itv->dec_mem) {
			IVTV_ERR("ioremap failed, perhaps increasing __VMALLOC_RESERVE in page.h\n");
			IVTV_ERR("or disabling CONFIG_HIMEM4G into the kernel would help\n");
			retval = -ENOMEM;
			goto free_mem;
		}
	}
	else {
		itv->dec_mem = itv->enc_mem;
	}

	/* map registers memory */
	IVTV_DEBUG_INFO("attempting ioremap at 0x%08x len 0x%08x\n",
		   itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
	itv->reg_mem =
	    ioremap_nocache(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
	if (!itv->reg_mem) {
		IVTV_ERR("ioremap failed, perhaps increasing __VMALLOC_RESERVE in page.h\n");
		IVTV_ERR("or disabling CONFIG_HIMEM4G into the kernel would help\n");
		retval = -ENOMEM;
		goto free_io;
	}

	while (--fw_retry_count > 0) {
		/* load firmware */
		if (ivtv_firmware_init(itv) == 0)
			break;
		if (fw_retry_count > 1)
			IVTV_WARN("Retry loading firmware\n");
	}
	if (fw_retry_count == 0) {
		IVTV_ERR("Error initializing firmware\n");
		goto free_i2c;
	}

	/* Try and get firmware versions */
	IVTV_DEBUG_INFO("Getting firmware version..\n");
	ivtv_firmware_versions(itv);

	/* Check yuv output filter table */
	if (itv->has_cx23415) ivtv_yuv_filter_check(itv);

	ivtv_gpio_init(itv);

	/* active i2c  */
	IVTV_DEBUG_INFO("activating i2c...\n");
	if (init_ivtv_i2c(itv)) {
		IVTV_ERR("Could not initialize i2c\n");
		goto free_irq;
	}

	IVTV_DEBUG_INFO("Active card count: %d.\n", ivtv_cards_active);

	if (itv->card->hw_all & IVTV_HW_TVEEPROM) {
#ifdef CONFIG_VIDEO_TVEEPROM_MODULE
		ivtv_request_module(itv, "tveeprom");
#endif
		/* Based on the model number the cardtype may be changed.
		   The PCI IDs are not always reliable. */
		ivtv_process_eeprom(itv);
	}

	if (itv->std == 0) {
		itv->std = V4L2_STD_NTSC_M;
	}

	if (itv->options.tuner == -1) {
		int i;

		for (i = 0; i < IVTV_CARD_MAX_TUNERS; i++) {
			if ((itv->std & itv->card->tuners[i].std) == 0)
				continue;
			itv->options.tuner = itv->card->tuners[i].tuner;
			break;
		}
	}
	/* if no tuner was found, then pick the first tuner in the card list */
	if (itv->options.tuner == -1 && itv->card->tuners[0].std) {
		itv->std = itv->card->tuners[0].std;
		itv->options.tuner = itv->card->tuners[0].tuner;
	}
	if (itv->options.radio == -1)
		itv->options.radio = (itv->card->radio_input.audio_type != 0);

	/* The card is now fully identified, continue with card-specific
	   initialization. */
	ivtv_init_struct2(itv);

	ivtv_load_and_init_modules(itv);

	if (itv->std & V4L2_STD_525_60) {
		itv->is_60hz = 1;
		itv->is_out_60hz = 1;
	} else {
		itv->is_50hz = 1;
		itv->is_out_50hz = 1;
	}
	itv->params.video_gop_size = itv->is_60hz ? 15 : 12;

	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_MPG] = 0x08000;
	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_PCM] = 0x01200;
	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_MPG] = 0x10000;

	/* 0x15180 == 720 * 480 / 4, 0x19500 == 720 * 576 / 4 */
	yuv_buf_size = itv->is_60hz ? 0x15180 : 0x19500;
	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_YUV] = yuv_buf_size / 2;
	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_YUV] = yuv_buf_size / 8;

	/* Setup VBI Raw Size. Should be big enough to hold PAL.
	   It is possible to switch between PAL and NTSC, so we need to
	   take the largest size here. */
	/* 1456 is multiple of 16, real size = 1444 */
	itv->vbi.raw_size = 1456;
	/* We use a buffer size of 1/2 of the total size needed for a
	   frame. This is actually very useful, since we now receive
	   a field at a time and that makes 'compressing' the raw data
	   down to size by stripping off the SAV codes a lot easier.
	   Note: having two different buffer sizes prevents standard
	   switching on the fly. We need to find a better solution... */
	vbi_buf_size = itv->vbi.raw_size * (itv->is_60hz ? 24 : 36) / 2;
	itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_VBI] = vbi_buf_size;
	itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_VBI] = sizeof(struct v4l2_sliced_vbi_data) * 36;

	if (itv->options.radio > 0)
		itv->v4l2_cap |= V4L2_CAP_RADIO;

	if (itv->options.tuner > -1) {
		struct tuner_setup setup;

		setup.addr = ADDR_UNSET;
		setup.type = itv->options.tuner;
		setup.mode_mask = T_ANALOG_TV;  /* matches TV tuners */
#ifdef HAVE_XC3028
		setup.initmode = V4L2_TUNER_ANALOG_TV;
		if (itv->options.tuner == TUNER_XCEIVE_XC3028) {
			setup.gpio_write = ivtv_reset_tuner_gpio;
			setup.gpio_priv = itv;
		}
#endif
		ivtv_call_i2c_clients(itv, TUNER_SET_TYPE_ADDR, &setup);
	}

	vf.tuner = 0;
	vf.type = V4L2_TUNER_ANALOG_TV;
	vf.frequency = 6400; /* the tuner 'baseline' frequency */
	if (itv->std & V4L2_STD_NTSC_M) {
		/* Why on earth? */
		vf.frequency = 1076;	/* ch. 4 67250*16/1000 */
	}

	/* The tuner is fixed to the standard. The other inputs (e.g. S-Video)
	   are not. */
	itv->tuner_std = itv->std;

	video_input = itv->active_input;
	itv->active_input++;	/* Force update of input */
	ivtv_v4l2_ioctls(itv, NULL, VIDIOC_S_INPUT, &video_input);

	/* Let the VIDIOC_S_STD ioctl do all the work, keeps the code
	   in one place. */
	itv->std++;		/* Force full standard initialization */
	itv->std_out = itv->std;
	ivtv_v4l2_ioctls(itv, NULL, VIDIOC_S_FREQUENCY, &vf);

	retval = ivtv_streams_setup(itv);
	if (retval) {
		IVTV_ERR("Error %d setting up streams\n", retval);
		goto free_i2c;
	}

	if (itv->card->v4l2_capabilities & V4L2_CAP_VIDEO_OUTPUT) {
		ivtv_init_mpeg_decoder(itv);
	}
	ivtv_v4l2_ioctls(itv, NULL, VIDIOC_S_STD, &itv->tuner_std);

	IVTV_DEBUG_IRQ("Masking interrupts\n");
	/* clear interrupt mask, effectively disabling interrupts */
	ivtv_set_irq_mask(itv, 0xffffffff);

	/* Register IRQ */
	retval = request_irq(itv->dev->irq, ivtv_irq_handler,
			     IRQF_SHARED | IRQF_DISABLED, itv->name, (void *)itv);
	if (retval) {
		IVTV_ERR("Failed to register irq %d\n", retval);
		goto free_streams;
	}

	/* On a cx23416 this seems to be able to enable DMA to the chip? */
	if (!itv->has_cx23415)
		write_reg_sync(0x03, IVTV_REG_DMACONTROL);

	/* Default interrupts enabled. For the PVR350 this includes the
	   decoder VSYNC interrupt, which is always on. It is not only used
	   during decoding but also by the OSD.
	   Some old PVR250 cards had a cx23415, so testing for that is too
	   general. Instead test if the card has video output capability. */
	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT | IVTV_IRQ_DEC_VSYNC);
	else
		ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_INIT);

	if (itv->has_cx23415)
		ivtv_set_osd_alpha(itv);

	IVTV_INFO("Initialized %s, card #%d\n", itv->card_name, itv->num);

	return 0;

      free_irq:
	free_irq(itv->dev->irq, (void *)itv);
      free_streams:
	ivtv_streams_cleanup(itv);
      free_i2c:
	exit_ivtv_i2c(itv);
      free_io:
	ivtv_iounmap(itv);
      free_mem:
	release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
	release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
	if (itv->has_cx23415)
		release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
      free_workqueue:
	destroy_workqueue(itv->irq_work_queues);
      err:
	if (retval == 0)
		retval = -ENODEV;
	IVTV_ERR("Error %d on initialization\n", retval);

	kfree(ivtv_cards[ivtv_cards_active]);
	ivtv_cards[ivtv_cards_active] = NULL;
	return retval;
}

static void ivtv_remove(struct pci_dev *pci_dev)
{
	struct ivtv *itv = pci_get_drvdata(pci_dev);

	IVTV_DEBUG_INFO("Removing Card #%d.\n", itv->num);

	/* Stop all captures */
	IVTV_DEBUG_INFO(" Stopping all streams.\n");
	if (atomic_read(&itv->capturing) > 0)
		ivtv_stop_all_captures(itv);

	/* Stop all decoding */
	IVTV_DEBUG_INFO(" Stopping decoding.\n");
	if (atomic_read(&itv->decoding) > 0) {
		int type;

		if (test_bit(IVTV_F_I_DEC_YUV, &itv->i_flags))
			type = IVTV_DEC_STREAM_TYPE_YUV;
		else
			type = IVTV_DEC_STREAM_TYPE_MPG;
		ivtv_stop_v4l2_decode_stream(&itv->streams[type],
			VIDEO_CMD_STOP_TO_BLACK | VIDEO_CMD_STOP_IMMEDIATELY, 0);
	}

	/* Interrupts */
	IVTV_DEBUG_INFO(" Disabling interrupts.\n");
	ivtv_set_irq_mask(itv, 0xffffffff);
	del_timer_sync(&itv->dma_timer);

	/* Stop all Work Queues */
	IVTV_DEBUG_INFO(" Stop Work Queues.\n");
	flush_workqueue(itv->irq_work_queues);
	destroy_workqueue(itv->irq_work_queues);

	IVTV_DEBUG_INFO(" Stopping Firmware.\n");
	ivtv_halt_firmware(itv);

	IVTV_DEBUG_INFO(" Unregistering v4l devices.\n");
	ivtv_streams_cleanup(itv);
	IVTV_DEBUG_INFO(" Freeing dma resources.\n");
	ivtv_udma_free(itv);

	exit_ivtv_i2c(itv);

	IVTV_DEBUG_INFO(" Releasing irq.\n");
	free_irq(itv->dev->irq, (void *)itv);
	ivtv_iounmap(itv);

	IVTV_DEBUG_INFO(" Releasing mem.\n");
	release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
	release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
	if (itv->has_cx23415)
		release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);

	pci_disable_device(itv->dev);

	IVTV_INFO("Removed %s, card #%d\n", itv->card_name, itv->num);
}

/* define a pci_driver for card detection */
static struct pci_driver ivtv_pci_driver = {
      .name =     "ivtv",
      .id_table = ivtv_pci_tbl,
      .probe =    ivtv_probe,
      .remove =   ivtv_remove,
};

static int module_start(void)
{
	printk(KERN_INFO "ivtv:  ==================== START INIT IVTV ====================\n");
	printk(KERN_INFO "ivtv:  version %s (" VERMAGIC_STRING ") loading\n", IVTV_VERSION);

	memset(ivtv_cards, 0, sizeof(ivtv_cards));

	/* Validate parameters */
	if (ivtv_first_minor < 0 || ivtv_first_minor >= IVTV_MAX_CARDS) {
		printk(KERN_ERR "ivtv:  ivtv_first_minor must be between 0 and %d. Exiting...\n",
		     IVTV_MAX_CARDS - 1);
		return -1;
	}

	if (ivtv_debug < 0 || ivtv_debug > 511) {
		ivtv_debug = 0;
		printk(KERN_INFO "ivtv:  debug value must be >= 0 and <= 511!\n");
	}

	if (pci_register_driver(&ivtv_pci_driver)) {
		printk(KERN_ERR "ivtv:  Error detecting PCI card\n");
		return -ENODEV;
	}
	printk(KERN_INFO "ivtv:  ====================  END INIT IVTV  ====================\n");
	return 0;
}

static void module_cleanup(void)
{
	int i, j;

	pci_unregister_driver(&ivtv_pci_driver);

	for (i = 0; i < ivtv_cards_active; i++) {
		if (ivtv_cards[i] == NULL)
			continue;
		for (j = 0; j < IVTV_VBI_FRAMES; j++) {
			kfree(ivtv_cards[i]->vbi.sliced_mpeg_data[j]);
		}
		kfree(ivtv_cards[i]);
	}
}

/* Note: These symbols are exported because they are used by the ivtv-fb
   framebuffer module and an infrared module for the IR-blaster. */
EXPORT_SYMBOL(ivtv_set_irq_mask);
EXPORT_SYMBOL(ivtv_cards_active);
EXPORT_SYMBOL(ivtv_cards);
EXPORT_SYMBOL(ivtv_api);
EXPORT_SYMBOL(ivtv_vapi);
EXPORT_SYMBOL(ivtv_vapi_result);
EXPORT_SYMBOL(ivtv_clear_irq_mask);
EXPORT_SYMBOL(ivtv_debug);
EXPORT_SYMBOL(ivtv_reset_ir_gpio);
EXPORT_SYMBOL(ivtv_udma_setup);
EXPORT_SYMBOL(ivtv_udma_unmap);
EXPORT_SYMBOL(ivtv_udma_alloc);
EXPORT_SYMBOL(ivtv_udma_prepare);

module_init(module_start);
module_exit(module_cleanup);