File: cx18-ioctl.c

package info (click to toggle)
linux 4.9.189-3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 835,376 kB
  • sloc: ansic: 14,523,990; asm: 288,915; makefile: 35,290; perl: 27,555; sh: 17,017; python: 13,389; cpp: 6,102; yacc: 4,354; lex: 2,441; awk: 1,212; pascal: 231; lisp: 218; sed: 21
file content (1132 lines) | stat: -rw-r--r-- 31,306 bytes parent folder | download | duplicates (7)
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
/*
 *  cx18 ioctl system call
 *
 *  Derived from ivtv-ioctl.c
 *
 *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
 *  Copyright (C) 2008  Andy Walls <awalls@md.metrocast.net>
 *
 *  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
 */

#include "cx18-driver.h"
#include "cx18-io.h"
#include "cx18-version.h"
#include "cx18-mailbox.h"
#include "cx18-i2c.h"
#include "cx18-queue.h"
#include "cx18-fileops.h"
#include "cx18-vbi.h"
#include "cx18-audio.h"
#include "cx18-video.h"
#include "cx18-streams.h"
#include "cx18-ioctl.h"
#include "cx18-gpio.h"
#include "cx18-controls.h"
#include "cx18-cards.h"
#include "cx18-av-core.h"
#include <media/tveeprom.h>
#include <media/v4l2-event.h>

u16 cx18_service2vbi(int type)
{
	switch (type) {
	case V4L2_SLICED_TELETEXT_B:
		return CX18_SLICED_TYPE_TELETEXT_B;
	case V4L2_SLICED_CAPTION_525:
		return CX18_SLICED_TYPE_CAPTION_525;
	case V4L2_SLICED_WSS_625:
		return CX18_SLICED_TYPE_WSS_625;
	case V4L2_SLICED_VPS:
		return CX18_SLICED_TYPE_VPS;
	default:
		return 0;
	}
}

/* Check if VBI services are allowed on the (field, line) for the video std */
static int valid_service_line(int field, int line, int is_pal)
{
	return (is_pal && line >= 6 &&
		((field == 0 && line <= 23) || (field == 1 && line <= 22))) ||
	       (!is_pal && line >= 10 && line < 22);
}

/*
 * For a (field, line, std) and inbound potential set of services for that line,
 * return the first valid service of those passed in the incoming set for that
 * line in priority order:
 * CC, VPS, or WSS over TELETEXT for well known lines
 * TELETEXT, before VPS, before CC, before WSS, for other lines
 */
static u16 select_service_from_set(int field, int line, u16 set, int is_pal)
{
	u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525);
	int i;

	set = set & valid_set;
	if (set == 0 || !valid_service_line(field, line, is_pal))
		return 0;
	if (!is_pal) {
		if (line == 21 && (set & V4L2_SLICED_CAPTION_525))
			return V4L2_SLICED_CAPTION_525;
	} else {
		if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS))
			return V4L2_SLICED_VPS;
		if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625))
			return V4L2_SLICED_WSS_625;
		if (line == 23)
			return 0;
	}
	for (i = 0; i < 32; i++) {
		if ((1 << i) & set)
			return 1 << i;
	}
	return 0;
}

/*
 * Expand the service_set of *fmt into valid service_lines for the std,
 * and clear the passed in fmt->service_set
 */
void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
{
	u16 set = fmt->service_set;
	int f, l;

	fmt->service_set = 0;
	for (f = 0; f < 2; f++) {
		for (l = 0; l < 24; l++)
			fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal);
	}
}

/*
 * Sanitize the service_lines in *fmt per the video std, and return 1
 * if any service_line is left as valid after santization
 */
static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
{
	int f, l;
	u16 set = 0;

	for (f = 0; f < 2; f++) {
		for (l = 0; l < 24; l++) {
			fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
			set |= fmt->service_lines[f][l];
		}
	}
	return set != 0;
}

/* Compute the service_set from the assumed valid service_lines of *fmt */
u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
{
	int f, l;
	u16 set = 0;

	for (f = 0; f < 2; f++) {
		for (l = 0; l < 24; l++)
			set |= fmt->service_lines[f][l];
	}
	return set;
}

static int cx18_g_fmt_vid_cap(struct file *file, void *fh,
				struct v4l2_format *fmt)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;
	struct cx18_stream *s = &cx->streams[id->type];
	struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;

	pixfmt->width = cx->cxhdl.width;
	pixfmt->height = cx->cxhdl.height;
	pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
	pixfmt->field = V4L2_FIELD_INTERLACED;
	if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
		pixfmt->pixelformat = s->pixelformat;
		pixfmt->sizeimage = s->vb_bytes_per_frame;
		pixfmt->bytesperline = s->vb_bytes_per_line;
	} else {
		pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
		pixfmt->sizeimage = 128 * 1024;
		pixfmt->bytesperline = 0;
	}
	return 0;
}

static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
				struct v4l2_format *fmt)
{
	struct cx18 *cx = fh2id(fh)->cx;
	struct v4l2_vbi_format *vbifmt = &fmt->fmt.vbi;

	vbifmt->sampling_rate = 27000000;
	vbifmt->offset = 248; /* FIXME - slightly wrong for both 50 & 60 Hz */
	vbifmt->samples_per_line = VBI_ACTIVE_SAMPLES - 4;
	vbifmt->sample_format = V4L2_PIX_FMT_GREY;
	vbifmt->start[0] = cx->vbi.start[0];
	vbifmt->start[1] = cx->vbi.start[1];
	vbifmt->count[0] = vbifmt->count[1] = cx->vbi.count;
	vbifmt->flags = 0;
	vbifmt->reserved[0] = 0;
	vbifmt->reserved[1] = 0;
	return 0;
}

static int cx18_g_fmt_sliced_vbi_cap(struct file *file, void *fh,
					struct v4l2_format *fmt)
{
	struct cx18 *cx = fh2id(fh)->cx;
	struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;

	/* sane, V4L2 spec compliant, defaults */
	vbifmt->reserved[0] = 0;
	vbifmt->reserved[1] = 0;
	vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
	memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
	vbifmt->service_set = 0;

	/*
	 * Fetch the configured service_lines and total service_set from the
	 * digitizer/slicer.  Note, cx18_av_vbi() wipes the passed in
	 * fmt->fmt.sliced under valid calling conditions
	 */
	if (v4l2_subdev_call(cx->sd_av, vbi, g_sliced_fmt, &fmt->fmt.sliced))
		return -EINVAL;

	vbifmt->service_set = cx18_get_service_set(vbifmt);
	return 0;
}

static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
				struct v4l2_format *fmt)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;
	int w = fmt->fmt.pix.width;
	int h = fmt->fmt.pix.height;
	int min_h = 2;

	w = min(w, 720);
	w = max(w, 2);
	if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
		/* YUV height must be a multiple of 32 */
		h &= ~0x1f;
		min_h = 32;
	}
	h = min(h, cx->is_50hz ? 576 : 480);
	h = max(h, min_h);

	fmt->fmt.pix.width = w;
	fmt->fmt.pix.height = h;
	return 0;
}

static int cx18_try_fmt_vbi_cap(struct file *file, void *fh,
				struct v4l2_format *fmt)
{
	return cx18_g_fmt_vbi_cap(file, fh, fmt);
}

static int cx18_try_fmt_sliced_vbi_cap(struct file *file, void *fh,
					struct v4l2_format *fmt)
{
	struct cx18 *cx = fh2id(fh)->cx;
	struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;

	vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
	vbifmt->reserved[0] = 0;
	vbifmt->reserved[1] = 0;

	/* If given a service set, expand it validly & clear passed in set */
	if (vbifmt->service_set)
		cx18_expand_service_set(vbifmt, cx->is_50hz);
	/* Sanitize the service_lines, and compute the new set if any valid */
	if (check_service_set(vbifmt, cx->is_50hz))
		vbifmt->service_set = cx18_get_service_set(vbifmt);
	return 0;
}

static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
				struct v4l2_format *fmt)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;
	struct v4l2_subdev_format format = {
		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
	};
	struct cx18_stream *s = &cx->streams[id->type];
	int ret;
	int w, h;

	ret = cx18_try_fmt_vid_cap(file, fh, fmt);
	if (ret)
		return ret;
	w = fmt->fmt.pix.width;
	h = fmt->fmt.pix.height;

	if (cx->cxhdl.width == w && cx->cxhdl.height == h &&
	    s->pixelformat == fmt->fmt.pix.pixelformat)
		return 0;

	if (atomic_read(&cx->ana_capturing) > 0)
		return -EBUSY;

	s->pixelformat = fmt->fmt.pix.pixelformat;
	/* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
	   UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
	if (s->pixelformat == V4L2_PIX_FMT_HM12) {
		s->vb_bytes_per_frame = h * 720 * 3 / 2;
		s->vb_bytes_per_line = 720; /* First plane */
	} else {
		s->vb_bytes_per_frame = h * 720 * 2;
		s->vb_bytes_per_line = 1440; /* Packed */
	}

	format.format.width = cx->cxhdl.width = w;
	format.format.height = cx->cxhdl.height = h;
	format.format.code = MEDIA_BUS_FMT_FIXED;
	v4l2_subdev_call(cx->sd_av, pad, set_fmt, NULL, &format);
	return cx18_g_fmt_vid_cap(file, fh, fmt);
}

static int cx18_s_fmt_vbi_cap(struct file *file, void *fh,
				struct v4l2_format *fmt)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;
	int ret;

	/*
	 * Changing the Encoder's Raw VBI parameters won't have any effect
	 * if any analog capture is ongoing
	 */
	if (!cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
		return -EBUSY;

	/*
	 * Set the digitizer registers for raw active VBI.
	 * Note cx18_av_vbi_wipes out a lot of the passed in fmt under valid
	 * calling conditions
	 */
	ret = v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &fmt->fmt.vbi);
	if (ret)
		return ret;

	/* Store our new v4l2 (non-)sliced VBI state */
	cx->vbi.sliced_in->service_set = 0;
	cx->vbi.in.type = V4L2_BUF_TYPE_VBI_CAPTURE;

	return cx18_g_fmt_vbi_cap(file, fh, fmt);
}

static int cx18_s_fmt_sliced_vbi_cap(struct file *file, void *fh,
					struct v4l2_format *fmt)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;
	int ret;
	struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;

	cx18_try_fmt_sliced_vbi_cap(file, fh, fmt);

	/*
	 * Changing the Encoder's Raw VBI parameters won't have any effect
	 * if any analog capture is ongoing
	 */
	if (cx18_raw_vbi(cx) && atomic_read(&cx->ana_capturing) > 0)
		return -EBUSY;

	/*
	 * Set the service_lines requested in the digitizer/slicer registers.
	 * Note, cx18_av_vbi() wipes some "impossible" service lines in the
	 * passed in fmt->fmt.sliced under valid calling conditions
	 */
	ret = v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &fmt->fmt.sliced);
	if (ret)
		return ret;
	/* Store our current v4l2 sliced VBI settings */
	cx->vbi.in.type =  V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
	memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
	return 0;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int cx18_g_register(struct file *file, void *fh,
				struct v4l2_dbg_register *reg)
{
	struct cx18 *cx = fh2id(fh)->cx;

	if (reg->reg & 0x3)
		return -EINVAL;
	if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
		return -EINVAL;
	reg->size = 4;
	reg->val = cx18_read_enc(cx, reg->reg);
	return 0;
}

static int cx18_s_register(struct file *file, void *fh,
				const struct v4l2_dbg_register *reg)
{
	struct cx18 *cx = fh2id(fh)->cx;

	if (reg->reg & 0x3)
		return -EINVAL;
	if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
		return -EINVAL;
	cx18_write_enc(cx, reg->val, reg->reg);
	return 0;
}
#endif

static int cx18_querycap(struct file *file, void *fh,
				struct v4l2_capability *vcap)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18_stream *s = video_drvdata(file);
	struct cx18 *cx = id->cx;

	strlcpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver));
	strlcpy(vcap->card, cx->card_name, sizeof(vcap->card));
	snprintf(vcap->bus_info, sizeof(vcap->bus_info),
		 "PCI:%s", pci_name(cx->pci_dev));
	vcap->capabilities = cx->v4l2_cap;	/* capabilities */
	vcap->device_caps = s->v4l2_dev_caps;	/* device capabilities */
	vcap->capabilities |= V4L2_CAP_DEVICE_CAPS;
	return 0;
}

static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
{
	struct cx18 *cx = fh2id(fh)->cx;

	return cx18_get_audio_input(cx, vin->index, vin);
}

static int cx18_g_audio(struct file *file, void *fh, struct v4l2_audio *vin)
{
	struct cx18 *cx = fh2id(fh)->cx;

	vin->index = cx->audio_input;
	return cx18_get_audio_input(cx, vin->index, vin);
}

static int cx18_s_audio(struct file *file, void *fh, const struct v4l2_audio *vout)
{
	struct cx18 *cx = fh2id(fh)->cx;

	if (vout->index >= cx->nof_audio_inputs)
		return -EINVAL;
	cx->audio_input = vout->index;
	cx18_audio_set_io(cx);
	return 0;
}

static int cx18_enum_input(struct file *file, void *fh, struct v4l2_input *vin)
{
	struct cx18 *cx = fh2id(fh)->cx;

	/* set it to defaults from our table */
	return cx18_get_input(cx, vin->index, vin);
}

static int cx18_cropcap(struct file *file, void *fh,
			struct v4l2_cropcap *cropcap)
{
	struct cx18 *cx = fh2id(fh)->cx;

	if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;
	cropcap->pixelaspect.numerator = cx->is_50hz ? 54 : 11;
	cropcap->pixelaspect.denominator = cx->is_50hz ? 59 : 10;
	return 0;
}

static int cx18_g_selection(struct file *file, void *fh,
			    struct v4l2_selection *sel)
{
	struct cx18 *cx = fh2id(fh)->cx;

	if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;
	switch (sel->target) {
	case V4L2_SEL_TGT_CROP_BOUNDS:
	case V4L2_SEL_TGT_CROP_DEFAULT:
		sel->r.top = sel->r.left = 0;
		sel->r.width = 720;
		sel->r.height = cx->is_50hz ? 576 : 480;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
					struct v4l2_fmtdesc *fmt)
{
	static const struct v4l2_fmtdesc formats[] = {
		{ 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
		  "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12, { 0, 0, 0, 0 }
		},
		{ 1, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FMT_FLAG_COMPRESSED,
		  "MPEG", V4L2_PIX_FMT_MPEG, { 0, 0, 0, 0 }
		},
		{ 2, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0,
		  "UYVY 4:2:2", V4L2_PIX_FMT_UYVY, { 0, 0, 0, 0 }
		},
	};

	if (fmt->index > ARRAY_SIZE(formats) - 1)
		return -EINVAL;
	*fmt = formats[fmt->index];
	return 0;
}

static int cx18_g_input(struct file *file, void *fh, unsigned int *i)
{
	struct cx18 *cx = fh2id(fh)->cx;

	*i = cx->active_input;
	return 0;
}

int cx18_s_input(struct file *file, void *fh, unsigned int inp)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;
	v4l2_std_id std = V4L2_STD_ALL;
	const struct cx18_card_video_input *card_input =
				cx->card->video_inputs + inp;

	if (inp >= cx->nof_inputs)
		return -EINVAL;

	if (inp == cx->active_input) {
		CX18_DEBUG_INFO("Input unchanged\n");
		return 0;
	}

	CX18_DEBUG_INFO("Changing input from %d to %d\n",
			cx->active_input, inp);

	cx->active_input = inp;
	/* Set the audio input to whatever is appropriate for the input type. */
	cx->audio_input = cx->card->video_inputs[inp].audio_index;
	if (card_input->video_type == V4L2_INPUT_TYPE_TUNER)
		std = cx->tuner_std;
	cx->streams[CX18_ENC_STREAM_TYPE_MPG].video_dev.tvnorms = std;
	cx->streams[CX18_ENC_STREAM_TYPE_YUV].video_dev.tvnorms = std;
	cx->streams[CX18_ENC_STREAM_TYPE_VBI].video_dev.tvnorms = std;

	/* prevent others from messing with the streams until
	   we're finished changing inputs. */
	cx18_mute(cx);
	cx18_video_set_io(cx);
	cx18_audio_set_io(cx);
	cx18_unmute(cx);
	return 0;
}

static int cx18_g_frequency(struct file *file, void *fh,
				struct v4l2_frequency *vf)
{
	struct cx18 *cx = fh2id(fh)->cx;

	if (vf->tuner != 0)
		return -EINVAL;

	cx18_call_all(cx, tuner, g_frequency, vf);
	return 0;
}

int cx18_s_frequency(struct file *file, void *fh, const struct v4l2_frequency *vf)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;

	if (vf->tuner != 0)
		return -EINVAL;

	cx18_mute(cx);
	CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf->frequency);
	cx18_call_all(cx, tuner, s_frequency, vf);
	cx18_unmute(cx);
	return 0;
}

static int cx18_g_std(struct file *file, void *fh, v4l2_std_id *std)
{
	struct cx18 *cx = fh2id(fh)->cx;

	*std = cx->std;
	return 0;
}

int cx18_s_std(struct file *file, void *fh, v4l2_std_id std)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;

	if ((std & V4L2_STD_ALL) == 0)
		return -EINVAL;

	if (std == cx->std)
		return 0;

	if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
	    atomic_read(&cx->ana_capturing) > 0) {
		/* Switching standard would turn off the radio or mess
		   with already running streams, prevent that by
		   returning EBUSY. */
		return -EBUSY;
	}

	cx->std = std;
	cx->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
	cx->is_50hz = !cx->is_60hz;
	cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
	cx->cxhdl.width = 720;
	cx->cxhdl.height = cx->is_50hz ? 576 : 480;
	cx->vbi.count = cx->is_50hz ? 18 : 12;
	cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
	cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
	CX18_DEBUG_INFO("Switching standard to %llx.\n",
			(unsigned long long) cx->std);

	/* Tuner */
	cx18_call_all(cx, video, s_std, cx->std);
	return 0;
}

static int cx18_s_tuner(struct file *file, void *fh, const struct v4l2_tuner *vt)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;

	if (vt->index != 0)
		return -EINVAL;

	cx18_call_all(cx, tuner, s_tuner, vt);
	return 0;
}

static int cx18_g_tuner(struct file *file, void *fh, struct v4l2_tuner *vt)
{
	struct cx18 *cx = fh2id(fh)->cx;

	if (vt->index != 0)
		return -EINVAL;

	cx18_call_all(cx, tuner, g_tuner, vt);

	if (vt->type == V4L2_TUNER_RADIO)
		strlcpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
	else
		strlcpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
	return 0;
}

static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
					struct v4l2_sliced_vbi_cap *cap)
{
	struct cx18 *cx = fh2id(fh)->cx;
	int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
	int f, l;

	if (cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
		return -EINVAL;

	cap->service_set = 0;
	for (f = 0; f < 2; f++) {
		for (l = 0; l < 24; l++) {
			if (valid_service_line(f, l, cx->is_50hz)) {
				/*
				 * We can find all v4l2 supported vbi services
				 * for the standard, on a valid line for the std
				 */
				cap->service_lines[f][l] = set;
				cap->service_set |= set;
			} else
				cap->service_lines[f][l] = 0;
		}
	}
	for (f = 0; f < 3; f++)
		cap->reserved[f] = 0;
	return 0;
}

static int _cx18_process_idx_data(struct cx18_buffer *buf,
				  struct v4l2_enc_idx *idx)
{
	int consumed, remaining;
	struct v4l2_enc_idx_entry *e_idx;
	struct cx18_enc_idx_entry *e_buf;

	/* Frame type lookup: 1=I, 2=P, 4=B */
	const int mapping[8] = {
		-1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P,
		-1, V4L2_ENC_IDX_FRAME_B, -1, -1, -1
	};

	/*
	 * Assumption here is that a buf holds an integral number of
	 * struct cx18_enc_idx_entry objects and is properly aligned.
	 * This is enforced by the module options on IDX buffer sizes.
	 */
	remaining = buf->bytesused - buf->readpos;
	consumed = 0;
	e_idx = &idx->entry[idx->entries];
	e_buf = (struct cx18_enc_idx_entry *) &buf->buf[buf->readpos];

	while (remaining >= sizeof(struct cx18_enc_idx_entry) &&
	       idx->entries < V4L2_ENC_IDX_ENTRIES) {

		e_idx->offset = (((u64) le32_to_cpu(e_buf->offset_high)) << 32)
				| le32_to_cpu(e_buf->offset_low);

		e_idx->pts = (((u64) (le32_to_cpu(e_buf->pts_high) & 1)) << 32)
			     | le32_to_cpu(e_buf->pts_low);

		e_idx->length = le32_to_cpu(e_buf->length);

		e_idx->flags = mapping[le32_to_cpu(e_buf->flags) & 0x7];

		e_idx->reserved[0] = 0;
		e_idx->reserved[1] = 0;

		idx->entries++;
		e_idx = &idx->entry[idx->entries];
		e_buf++;

		remaining -= sizeof(struct cx18_enc_idx_entry);
		consumed += sizeof(struct cx18_enc_idx_entry);
	}

	/* Swallow any partial entries at the end, if there are any */
	if (remaining > 0 && remaining < sizeof(struct cx18_enc_idx_entry))
		consumed += remaining;

	buf->readpos += consumed;
	return consumed;
}

static int cx18_process_idx_data(struct cx18_stream *s, struct cx18_mdl *mdl,
				 struct v4l2_enc_idx *idx)
{
	if (s->type != CX18_ENC_STREAM_TYPE_IDX)
		return -EINVAL;

	if (mdl->curr_buf == NULL)
		mdl->curr_buf = list_first_entry(&mdl->buf_list,
						 struct cx18_buffer, list);

	if (list_entry_is_past_end(mdl->curr_buf, &mdl->buf_list, list)) {
		/*
		 * For some reason we've exhausted the buffers, but the MDL
		 * object still said some data was unread.
		 * Fix that and bail out.
		 */
		mdl->readpos = mdl->bytesused;
		return 0;
	}

	list_for_each_entry_from(mdl->curr_buf, &mdl->buf_list, list) {

		/* Skip any empty buffers in the MDL */
		if (mdl->curr_buf->readpos >= mdl->curr_buf->bytesused)
			continue;

		mdl->readpos += _cx18_process_idx_data(mdl->curr_buf, idx);

		/* exit when MDL drained or request satisfied */
		if (idx->entries >= V4L2_ENC_IDX_ENTRIES ||
		    mdl->curr_buf->readpos < mdl->curr_buf->bytesused ||
		    mdl->readpos >= mdl->bytesused)
			break;
	}
	return 0;
}

static int cx18_g_enc_index(struct file *file, void *fh,
				struct v4l2_enc_idx *idx)
{
	struct cx18 *cx = fh2id(fh)->cx;
	struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
	s32 tmp;
	struct cx18_mdl *mdl;

	if (!cx18_stream_enabled(s)) /* Module options inhibited IDX stream */
		return -EINVAL;

	/* Compute the best case number of entries we can buffer */
	tmp = s->buffers -
			  s->bufs_per_mdl * CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN;
	if (tmp <= 0)
		tmp = 1;
	tmp = tmp * s->buf_size / sizeof(struct cx18_enc_idx_entry);

	/* Fill out the header of the return structure */
	idx->entries = 0;
	idx->entries_cap = tmp;
	memset(idx->reserved, 0, sizeof(idx->reserved));

	/* Pull IDX MDLs and buffers from q_full and populate the entries */
	do {
		mdl = cx18_dequeue(s, &s->q_full);
		if (mdl == NULL) /* No more IDX data right now */
			break;

		/* Extract the Index entry data from the MDL and buffers */
		cx18_process_idx_data(s, mdl, idx);
		if (mdl->readpos < mdl->bytesused) {
			/* We finished with data remaining, push the MDL back */
			cx18_push(s, mdl, &s->q_full);
			break;
		}

		/* We drained this MDL, schedule it to go to the firmware */
		cx18_enqueue(s, mdl, &s->q_free);

	} while (idx->entries < V4L2_ENC_IDX_ENTRIES);

	/* Tell the work handler to send free IDX MDLs to the firmware */
	cx18_stream_load_fw_queue(s);
	return 0;
}

static struct videobuf_queue *cx18_vb_queue(struct cx18_open_id *id)
{
	struct videobuf_queue *q = NULL;
	struct cx18 *cx = id->cx;
	struct cx18_stream *s = &cx->streams[id->type];

	switch (s->vb_type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		q = &s->vbuf_q;
		break;
	case V4L2_BUF_TYPE_VBI_CAPTURE:
		break;
	default:
		break;
	}
	return q;
}

static int cx18_streamon(struct file *file, void *priv,
	enum v4l2_buf_type type)
{
	struct cx18_open_id *id = file->private_data;
	struct cx18 *cx = id->cx;
	struct cx18_stream *s = &cx->streams[id->type];

	/* Start the hardware only if we're the video device */
	if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
		(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
		return -EINVAL;

	if (id->type != CX18_ENC_STREAM_TYPE_YUV)
		return -EINVAL;

	/* Establish a buffer timeout */
	mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies);

	return videobuf_streamon(cx18_vb_queue(id));
}

static int cx18_streamoff(struct file *file, void *priv,
	enum v4l2_buf_type type)
{
	struct cx18_open_id *id = file->private_data;
	struct cx18 *cx = id->cx;
	struct cx18_stream *s = &cx->streams[id->type];

	/* Start the hardware only if we're the video device */
	if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
		(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
		return -EINVAL;

	if (id->type != CX18_ENC_STREAM_TYPE_YUV)
		return -EINVAL;

	return videobuf_streamoff(cx18_vb_queue(id));
}

static int cx18_reqbufs(struct file *file, void *priv,
	struct v4l2_requestbuffers *rb)
{
	struct cx18_open_id *id = file->private_data;
	struct cx18 *cx = id->cx;
	struct cx18_stream *s = &cx->streams[id->type];

	if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
		(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
		return -EINVAL;

	return videobuf_reqbufs(cx18_vb_queue(id), rb);
}

static int cx18_querybuf(struct file *file, void *priv,
	struct v4l2_buffer *b)
{
	struct cx18_open_id *id = file->private_data;
	struct cx18 *cx = id->cx;
	struct cx18_stream *s = &cx->streams[id->type];

	if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
		(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
		return -EINVAL;

	return videobuf_querybuf(cx18_vb_queue(id), b);
}

static int cx18_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
	struct cx18_open_id *id = file->private_data;
	struct cx18 *cx = id->cx;
	struct cx18_stream *s = &cx->streams[id->type];

	if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
		(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
		return -EINVAL;

	return videobuf_qbuf(cx18_vb_queue(id), b);
}

static int cx18_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
	struct cx18_open_id *id = file->private_data;
	struct cx18 *cx = id->cx;
	struct cx18_stream *s = &cx->streams[id->type];

	if ((s->vb_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
		(s->vb_type != V4L2_BUF_TYPE_VBI_CAPTURE))
		return -EINVAL;

	return videobuf_dqbuf(cx18_vb_queue(id), b, file->f_flags & O_NONBLOCK);
}

static int cx18_encoder_cmd(struct file *file, void *fh,
				struct v4l2_encoder_cmd *enc)
{
	struct cx18_open_id *id = fh2id(fh);
	struct cx18 *cx = id->cx;
	u32 h;

	switch (enc->cmd) {
	case V4L2_ENC_CMD_START:
		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
		enc->flags = 0;
		return cx18_start_capture(id);

	case V4L2_ENC_CMD_STOP:
		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
		enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
		cx18_stop_capture(id,
				  enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
		break;

	case V4L2_ENC_CMD_PAUSE:
		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
		enc->flags = 0;
		if (!atomic_read(&cx->ana_capturing))
			return -EPERM;
		if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
			return 0;
		h = cx18_find_handle(cx);
		if (h == CX18_INVALID_TASK_HANDLE) {
			CX18_ERR("Can't find valid task handle for "
				 "V4L2_ENC_CMD_PAUSE\n");
			return -EBADFD;
		}
		cx18_mute(cx);
		cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, h);
		break;

	case V4L2_ENC_CMD_RESUME:
		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
		enc->flags = 0;
		if (!atomic_read(&cx->ana_capturing))
			return -EPERM;
		if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
			return 0;
		h = cx18_find_handle(cx);
		if (h == CX18_INVALID_TASK_HANDLE) {
			CX18_ERR("Can't find valid task handle for "
				 "V4L2_ENC_CMD_RESUME\n");
			return -EBADFD;
		}
		cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, h);
		cx18_unmute(cx);
		break;

	default:
		CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
		return -EINVAL;
	}
	return 0;
}

static int cx18_try_encoder_cmd(struct file *file, void *fh,
				struct v4l2_encoder_cmd *enc)
{
	struct cx18 *cx = fh2id(fh)->cx;

	switch (enc->cmd) {
	case V4L2_ENC_CMD_START:
		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_START\n");
		enc->flags = 0;
		break;

	case V4L2_ENC_CMD_STOP:
		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_STOP\n");
		enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
		break;

	case V4L2_ENC_CMD_PAUSE:
		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_PAUSE\n");
		enc->flags = 0;
		break;

	case V4L2_ENC_CMD_RESUME:
		CX18_DEBUG_IOCTL("V4L2_ENC_CMD_RESUME\n");
		enc->flags = 0;
		break;

	default:
		CX18_DEBUG_IOCTL("Unknown cmd %d\n", enc->cmd);
		return -EINVAL;
	}
	return 0;
}

static int cx18_log_status(struct file *file, void *fh)
{
	struct cx18 *cx = fh2id(fh)->cx;
	struct v4l2_input vidin;
	struct v4l2_audio audin;
	int i;

	CX18_INFO("Version: %s  Card: %s\n", CX18_VERSION, cx->card_name);
	if (cx->hw_flags & CX18_HW_TVEEPROM) {
		struct tveeprom tv;

		cx18_read_eeprom(cx, &tv);
	}
	cx18_call_all(cx, core, log_status);
	cx18_get_input(cx, cx->active_input, &vidin);
	cx18_get_audio_input(cx, cx->audio_input, &audin);
	CX18_INFO("Video Input: %s\n", vidin.name);
	CX18_INFO("Audio Input: %s\n", audin.name);
	mutex_lock(&cx->gpio_lock);
	CX18_INFO("GPIO:  direction 0x%08x, value 0x%08x\n",
		cx->gpio_dir, cx->gpio_val);
	mutex_unlock(&cx->gpio_lock);
	CX18_INFO("Tuner: %s\n",
		test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ?  "Radio" : "TV");
	v4l2_ctrl_handler_log_status(&cx->cxhdl.hdl, cx->v4l2_dev.name);
	CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
	for (i = 0; i < CX18_MAX_STREAMS; i++) {
		struct cx18_stream *s = &cx->streams[i];

		if (s->video_dev.v4l2_dev == NULL || s->buffers == 0)
			continue;
		CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
			  s->name, s->s_flags,
			  atomic_read(&s->q_full.depth) * s->bufs_per_mdl * 100
			   / s->buffers,
			  (s->buffers * s->buf_size) / 1024, s->buffers);
	}
	CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
			(long long)cx->mpg_data_received,
			(long long)cx->vbi_data_inserted);
	return 0;
}

static long cx18_default(struct file *file, void *fh, bool valid_prio,
			 unsigned int cmd, void *arg)
{
	struct cx18 *cx = fh2id(fh)->cx;

	switch (cmd) {
	case VIDIOC_INT_RESET: {
		u32 val = *(u32 *)arg;

		if ((val == 0) || (val & 0x01))
			cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL, core, reset,
				     (u32) CX18_GPIO_RESET_Z8F0811);
		break;
	}

	default:
		return -ENOTTY;
	}
	return 0;
}

static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
	.vidioc_querycap                = cx18_querycap,
	.vidioc_s_audio                 = cx18_s_audio,
	.vidioc_g_audio                 = cx18_g_audio,
	.vidioc_enumaudio               = cx18_enumaudio,
	.vidioc_enum_input              = cx18_enum_input,
	.vidioc_cropcap                 = cx18_cropcap,
	.vidioc_g_selection             = cx18_g_selection,
	.vidioc_g_input                 = cx18_g_input,
	.vidioc_s_input                 = cx18_s_input,
	.vidioc_g_frequency             = cx18_g_frequency,
	.vidioc_s_frequency             = cx18_s_frequency,
	.vidioc_s_tuner                 = cx18_s_tuner,
	.vidioc_g_tuner                 = cx18_g_tuner,
	.vidioc_g_enc_index             = cx18_g_enc_index,
	.vidioc_g_std                   = cx18_g_std,
	.vidioc_s_std                   = cx18_s_std,
	.vidioc_log_status              = cx18_log_status,
	.vidioc_enum_fmt_vid_cap        = cx18_enum_fmt_vid_cap,
	.vidioc_encoder_cmd             = cx18_encoder_cmd,
	.vidioc_try_encoder_cmd         = cx18_try_encoder_cmd,
	.vidioc_g_fmt_vid_cap           = cx18_g_fmt_vid_cap,
	.vidioc_g_fmt_vbi_cap           = cx18_g_fmt_vbi_cap,
	.vidioc_g_fmt_sliced_vbi_cap    = cx18_g_fmt_sliced_vbi_cap,
	.vidioc_s_fmt_vid_cap           = cx18_s_fmt_vid_cap,
	.vidioc_s_fmt_vbi_cap           = cx18_s_fmt_vbi_cap,
	.vidioc_s_fmt_sliced_vbi_cap    = cx18_s_fmt_sliced_vbi_cap,
	.vidioc_try_fmt_vid_cap         = cx18_try_fmt_vid_cap,
	.vidioc_try_fmt_vbi_cap         = cx18_try_fmt_vbi_cap,
	.vidioc_try_fmt_sliced_vbi_cap  = cx18_try_fmt_sliced_vbi_cap,
	.vidioc_g_sliced_vbi_cap        = cx18_g_sliced_vbi_cap,
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.vidioc_g_register              = cx18_g_register,
	.vidioc_s_register              = cx18_s_register,
#endif
	.vidioc_default                 = cx18_default,
	.vidioc_streamon                = cx18_streamon,
	.vidioc_streamoff               = cx18_streamoff,
	.vidioc_reqbufs                 = cx18_reqbufs,
	.vidioc_querybuf                = cx18_querybuf,
	.vidioc_qbuf                    = cx18_qbuf,
	.vidioc_dqbuf                   = cx18_dqbuf,
	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
};

void cx18_set_funcs(struct video_device *vdev)
{
	vdev->ioctl_ops = &cx18_ioctl_ops;
}