summaryrefslogtreecommitdiffstats
path: root/drivers/media/usb/go7007/go7007-v4l2.c
blob: ea01ee5df60a4400e51f55a201db43d985ffc67e (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
/*
 * Copyright (C) 2005-2006 Micronas USA Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (Version 2) as
 * published by the Free Software Foundation.
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/unistd.h>
#include <linux/time.h>
#include <linux/vmalloc.h>
#include <linux/pagemap.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <linux/uaccess.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-event.h>
#include <media/videobuf2-vmalloc.h>
#include <media/i2c/saa7115.h>

#include "go7007-priv.h"

#define call_all(dev, o, f, args...) \
	v4l2_device_call_until_err(dev, 0, o, f, ##args)

static bool valid_pixelformat(u32 pixelformat)
{
	switch (pixelformat) {
	case V4L2_PIX_FMT_MJPEG:
	case V4L2_PIX_FMT_MPEG1:
	case V4L2_PIX_FMT_MPEG2:
	case V4L2_PIX_FMT_MPEG4:
		return true;
	default:
		return false;
	}
}

static u32 get_frame_type_flag(struct go7007_buffer *vb, int format)
{
	u8 *ptr = vb2_plane_vaddr(&vb->vb.vb2_buf, 0);

	switch (format) {
	case V4L2_PIX_FMT_MJPEG:
		return V4L2_BUF_FLAG_KEYFRAME;
	case V4L2_PIX_FMT_MPEG4:
		switch ((ptr[vb->frame_offset + 4] >> 6) & 0x3) {
		case 0:
			return V4L2_BUF_FLAG_KEYFRAME;
		case 1:
			return V4L2_BUF_FLAG_PFRAME;
		case 2:
			return V4L2_BUF_FLAG_BFRAME;
		default:
			return 0;
		}
	case V4L2_PIX_FMT_MPEG1:
	case V4L2_PIX_FMT_MPEG2:
		switch ((ptr[vb->frame_offset + 5] >> 3) & 0x7) {
		case 1:
			return V4L2_BUF_FLAG_KEYFRAME;
		case 2:
			return V4L2_BUF_FLAG_PFRAME;
		case 3:
			return V4L2_BUF_FLAG_BFRAME;
		default:
			return 0;
		}
	}

	return 0;
}

static void get_resolution(struct go7007 *go, int *width, int *height)
{
	switch (go->standard) {
	case GO7007_STD_NTSC:
		*width = 720;
		*height = 480;
		break;
	case GO7007_STD_PAL:
		*width = 720;
		*height = 576;
		break;
	case GO7007_STD_OTHER:
	default:
		*width = go->board_info->sensor_width;
		*height = go->board_info->sensor_height;
		break;
	}
}

static void set_formatting(struct go7007 *go)
{
	if (go->format == V4L2_PIX_FMT_MJPEG) {
		go->pali = 0;
		go->aspect_ratio = GO7007_RATIO_1_1;
		go->gop_size = 0;
		go->ipb = 0;
		go->closed_gop = 0;
		go->repeat_seqhead = 0;
		go->seq_header_enable = 0;
		go->gop_header_enable = 0;
		go->dvd_mode = 0;
		return;
	}

	switch (go->format) {
	case V4L2_PIX_FMT_MPEG1:
		go->pali = 0;
		break;
	default:
	case V4L2_PIX_FMT_MPEG2:
		go->pali = 0x48;
		break;
	case V4L2_PIX_FMT_MPEG4:
		/* For future reference: this is the list of MPEG4
		 * profiles that are available, although they are
		 * untested:
		 *
		 * Profile		pali
		 * --------------	----
		 * PROFILE_S_L0		0x08
		 * PROFILE_S_L1		0x01
		 * PROFILE_S_L2		0x02
		 * PROFILE_S_L3		0x03
		 * PROFILE_ARTS_L1	0x91
		 * PROFILE_ARTS_L2	0x92
		 * PROFILE_ARTS_L3	0x93
		 * PROFILE_ARTS_L4	0x94
		 * PROFILE_AS_L0	0xf0
		 * PROFILE_AS_L1	0xf1
		 * PROFILE_AS_L2	0xf2
		 * PROFILE_AS_L3	0xf3
		 * PROFILE_AS_L4	0xf4
		 * PROFILE_AS_L5	0xf5
		 */
		go->pali = 0xf5;
		break;
	}
	go->gop_size = v4l2_ctrl_g_ctrl(go->mpeg_video_gop_size);
	go->closed_gop = v4l2_ctrl_g_ctrl(go->mpeg_video_gop_closure);
	go->ipb = v4l2_ctrl_g_ctrl(go->mpeg_video_b_frames) != 0;
	go->bitrate = v4l2_ctrl_g_ctrl(go->mpeg_video_bitrate);
	go->repeat_seqhead = v4l2_ctrl_g_ctrl(go->mpeg_video_rep_seqheader);
	go->gop_header_enable = 1;
	go->dvd_mode = 0;
	if (go->format == V4L2_PIX_FMT_MPEG2)
		go->dvd_mode =
			go->bitrate == 9800000 &&
			go->gop_size == 15 &&
			go->ipb == 0 &&
			go->repeat_seqhead == 1 &&
			go->closed_gop;

	switch (v4l2_ctrl_g_ctrl(go->mpeg_video_aspect_ratio)) {
	default:
	case V4L2_MPEG_VIDEO_ASPECT_1x1:
		go->aspect_ratio = GO7007_RATIO_1_1;
		break;
	case V4L2_MPEG_VIDEO_ASPECT_4x3:
		go->aspect_ratio = GO7007_RATIO_4_3;
		break;
	case V4L2_MPEG_VIDEO_ASPECT_16x9:
		go->aspect_ratio = GO7007_RATIO_16_9;
		break;
	}
}

static int set_capture_size(struct go7007 *go, struct v4l2_format *fmt, int try)
{
	int sensor_height = 0, sensor_width = 0;
	int width, height;

	if (fmt != NULL && !valid_pixelformat(fmt->fmt.pix.pixelformat))
		return -EINVAL;

	get_resolution(go, &sensor_width, &sensor_height);

	if (fmt == NULL) {
		width = sensor_width;
		height = sensor_height;
	} else if (go->board_info->sensor_flags & GO7007_SENSOR_SCALING) {
		if (fmt->fmt.pix.width > sensor_width)
			width = sensor_width;
		else if (fmt->fmt.pix.width < 144)
			width = 144;
		else
			width = fmt->fmt.pix.width & ~0x0f;

		if (fmt->fmt.pix.height > sensor_height)
			height = sensor_height;
		else if (fmt->fmt.pix.height < 96)
			height = 96;
		else
			height = fmt->fmt.pix.height & ~0x0f;
	} else {
		width = fmt->fmt.pix.width;

		if (width <= sensor_width / 4) {
			width = sensor_width / 4;
			height = sensor_height / 4;
		} else if (width <= sensor_width / 2) {
			width = sensor_width / 2;
			height = sensor_height / 2;
		} else {
			width = sensor_width;
			height = sensor_height;
		}
		width &= ~0xf;
		height &= ~0xf;
	}

	if (fmt != NULL) {
		u32 pixelformat = fmt->fmt.pix.pixelformat;

		memset(fmt, 0, sizeof(*fmt));
		fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
		fmt->fmt.pix.width = width;
		fmt->fmt.pix.height = height;
		fmt->fmt.pix.pixelformat = pixelformat;
		fmt->fmt.pix.field = V4L2_FIELD_NONE;
		fmt->fmt.pix.bytesperline = 0;
		fmt->fmt.pix.sizeimage = GO7007_BUF_SIZE;
		fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
	}

	if (try)
		return 0;

	if (fmt)
		go->format = fmt->fmt.pix.pixelformat;
	go->width = width;
	go->height = height;
	go->encoder_h_offset = go->board_info->sensor_h_offset;
	go->encoder_v_offset = go->board_info->sensor_v_offset;

	if (go->board_info->sensor_flags & GO7007_SENSOR_SCALING) {
		struct v4l2_subdev_format format = {
			.which = V4L2_SUBDEV_FORMAT_ACTIVE,
		};

		format.format.code = MEDIA_BUS_FMT_FIXED;
		format.format.width = fmt ? fmt->fmt.pix.width : width;
		format.format.height = height;
		go->encoder_h_halve = 0;
		go->encoder_v_halve = 0;
		go->encoder_subsample = 0;
		call_all(&go->v4l2_dev, pad, set_fmt, NULL, &format);
	} else {
		if (width <= sensor_width / 4) {
			go->encoder_h_halve = 1;
			go->encoder_v_halve = 1;
			go->encoder_subsample = 1;
		} else if (width <= sensor_width / 2) {
			go->encoder_h_halve = 1;
			go->encoder_v_halve = 1;
			go->encoder_subsample = 0;
		} else {
			go->encoder_h_halve = 0;
			go->encoder_v_halve = 0;
			go->encoder_subsample = 0;
		}
	}
	return 0;
}

static int vidioc_querycap(struct file *file, void  *priv,
					struct v4l2_capability *cap)
{
	struct go7007 *go = video_drvdata(file);

	strlcpy(cap->driver, "go7007", sizeof(cap->driver));
	strlcpy(cap->card, go->name, sizeof(cap->card));
	strlcpy(cap->bus_info, go->bus_info, sizeof(cap->bus_info));

	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
				V4L2_CAP_STREAMING;

	if (go->board_info->num_aud_inputs)
		cap->device_caps |= V4L2_CAP_AUDIO;
	if (go->board_info->flags & GO7007_BOARD_HAS_TUNER)
		cap->device_caps |= V4L2_CAP_TUNER;
	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
	return 0;
}

static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
					struct v4l2_fmtdesc *fmt)
{
	char *desc = NULL;

	switch (fmt->index) {
	case 0:
		fmt->pixelformat = V4L2_PIX_FMT_MJPEG;
		desc = "Motion JPEG";
		break;
	case 1:
		fmt->pixelformat = V4L2_PIX_FMT_MPEG1;
		desc = "MPEG-1 ES";
		break;
	case 2:
		fmt->pixelformat = V4L2_PIX_FMT_MPEG2;
		desc = "MPEG-2 ES";
		break;
	case 3:
		fmt->pixelformat = V4L2_PIX_FMT_MPEG4;
		desc = "MPEG-4 ES";
		break;
	default:
		return -EINVAL;
	}
	fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	fmt->flags = V4L2_FMT_FLAG_COMPRESSED;

	strncpy(fmt->description, desc, sizeof(fmt->description));

	return 0;
}

static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
					struct v4l2_format *fmt)
{
	struct go7007 *go = video_drvdata(file);

	fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	fmt->fmt.pix.width = go->width;
	fmt->fmt.pix.height = go->height;
	fmt->fmt.pix.pixelformat = go->format;
	fmt->fmt.pix.field = V4L2_FIELD_NONE;
	fmt->fmt.pix.bytesperline = 0;
	fmt->fmt.pix.sizeimage = GO7007_BUF_SIZE;
	fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;

	return 0;
}

static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
			struct v4l2_format *fmt)
{
	struct go7007 *go = video_drvdata(file);

	return set_capture_size(go, fmt, 1);
}

static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
			struct v4l2_format *fmt)
{
	struct go7007 *go = video_drvdata(file);

	if (vb2_is_busy(&go->vidq))
		return -EBUSY;

	return set_capture_size(go, fmt, 0);
}

static int go7007_queue_setup(struct vb2_queue *q,
		unsigned int *num_buffers, unsigned int *num_planes,
		unsigned int sizes[], void *alloc_ctxs[])
{
	sizes[0] = GO7007_BUF_SIZE;
	*num_planes = 1;

	if (*num_buffers < 2)
		*num_buffers = 2;

	return 0;
}

static void go7007_buf_queue(struct vb2_buffer *vb)
{
	struct vb2_queue *vq = vb->vb2_queue;
	struct go7007 *go = vb2_get_drv_priv(vq);
	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
	struct go7007_buffer *go7007_vb =
		container_of(vbuf, struct go7007_buffer, vb);
	unsigned long flags;

	spin_lock_irqsave(&go->spinlock, flags);
	list_add_tail(&go7007_vb->list, &go->vidq_active);
	spin_unlock_irqrestore(&go->spinlock, flags);
}

static int go7007_buf_prepare(struct vb2_buffer *vb)
{
	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
	struct go7007_buffer *go7007_vb =
		container_of(vbuf, struct go7007_buffer, vb);

	go7007_vb->modet_active = 0;
	go7007_vb->frame_offset = 0;
	vb->planes[0].bytesused = 0;
	return 0;
}

static void go7007_buf_finish(struct vb2_buffer *vb)
{
	struct vb2_queue *vq = vb->vb2_queue;
	struct go7007 *go = vb2_get_drv_priv(vq);
	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
	struct go7007_buffer *go7007_vb =
		container_of(vbuf, struct go7007_buffer, vb);
	u32 frame_type_flag = get_frame_type_flag(go7007_vb, go->format);

	vbuf->flags &= ~(V4L2_BUF_FLAG_KEYFRAME | V4L2_BUF_FLAG_BFRAME |
			V4L2_BUF_FLAG_PFRAME);
	vbuf->flags |= frame_type_flag;
	vbuf->field = V4L2_FIELD_NONE;
}

static int go7007_start_streaming(struct vb2_queue *q, unsigned int count)
{
	struct go7007 *go = vb2_get_drv_priv(q);
	int ret;

	set_formatting(go);
	mutex_lock(&go->hw_lock);
	go->next_seq = 0;
	go->active_buf = NULL;
	go->modet_event_status = 0;
	q->streaming = 1;
	if (go7007_start_encoder(go) < 0)
		ret = -EIO;
	else
		ret = 0;
	mutex_unlock(&go->hw_lock);
	if (ret) {
		q->streaming = 0;
		return ret;
	}
	call_all(&go->v4l2_dev, video, s_stream, 1);
	v4l2_ctrl_grab(go->mpeg_video_gop_size, true);
	v4l2_ctrl_grab(go->mpeg_video_gop_closure, true);
	v4l2_ctrl_grab(go->mpeg_video_bitrate, true);
	v4l2_ctrl_grab(go->mpeg_video_aspect_ratio, true);
	/* Turn on Capture LED */
	if (go->board_id == GO7007_BOARDID_ADS_USBAV_709)
		go7007_write_addr(go, 0x3c82, 0x0005);
	return ret;
}

static void go7007_stop_streaming(struct vb2_queue *q)
{
	struct go7007 *go = vb2_get_drv_priv(q);
	unsigned long flags;

	q->streaming = 0;
	go7007_stream_stop(go);
	mutex_lock(&go->hw_lock);
	go7007_reset_encoder(go);
	mutex_unlock(&go->hw_lock);
	call_all(&go->v4l2_dev, video, s_stream, 0);

	spin_lock_irqsave(&go->spinlock, flags);
	INIT_LIST_HEAD(&go->vidq_active);
	spin_unlock_irqrestore(&go->spinlock, flags);
	v4l2_ctrl_grab(go->mpeg_video_gop_size, false);
	v4l2_ctrl_grab(go->mpeg_video_gop_closure, false);
	v4l2_ctrl_grab(go->mpeg_video_bitrate, false);
	v4l2_ctrl_grab(go->mpeg_video_aspect_ratio, false);
	/* Turn on Capture LED */
	if (go->board_id == GO7007_BOARDID_ADS_USBAV_709)
		go7007_write_addr(go, 0x3c82, 0x000d);
}

static struct vb2_ops go7007_video_qops = {
	.queue_setup    = go7007_queue_setup,
	.buf_queue      = go7007_buf_queue,
	.buf_prepare    = go7007_buf_prepare,
	.buf_finish     = go7007_buf_finish,
	.start_streaming = go7007_start_streaming,
	.stop_streaming = go7007_stop_streaming,
	.wait_prepare   = vb2_ops_wait_prepare,
	.wait_finish    = vb2_ops_wait_finish,
};

static int vidioc_g_parm(struct file *filp, void *priv,
		struct v4l2_streamparm *parm)
{
	struct go7007 *go = video_drvdata(filp);
	struct v4l2_fract timeperframe = {
		.numerator = 1001 *  go->fps_scale,
		.denominator = go->sensor_framerate,
	};

	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	parm->parm.capture.readbuffers = 2;
	parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
	parm->parm.capture.timeperframe = timeperframe;

	return 0;
}

static int vidioc_s_parm(struct file *filp, void *priv,
		struct v4l2_streamparm *parm)
{
	struct go7007 *go = video_drvdata(filp);
	unsigned int n, d;

	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	n = go->sensor_framerate *
		parm->parm.capture.timeperframe.numerator;
	d = 1001 * parm->parm.capture.timeperframe.denominator;
	if (n != 0 && d != 0 && n > d)
		go->fps_scale = (n + d/2) / d;
	else
		go->fps_scale = 1;

	return vidioc_g_parm(filp, priv, parm);
}

/* VIDIOC_ENUMSTD on go7007 were used for enumerating the supported fps and
   its resolution, when the device is not connected to TV.
   This is were an API abuse, probably used by the lack of specific IOCTL's to
   enumerate it, by the time the driver was written.

   However, since kernel 2.6.19, two new ioctls (VIDIOC_ENUM_FRAMEINTERVALS
   and VIDIOC_ENUM_FRAMESIZES) were added for this purpose.

   The two functions below implement the newer ioctls
*/
static int vidioc_enum_framesizes(struct file *filp, void *priv,
				  struct v4l2_frmsizeenum *fsize)
{
	struct go7007 *go = video_drvdata(filp);
	int width, height;

	if (fsize->index > 2)
		return -EINVAL;

	if (!valid_pixelformat(fsize->pixel_format))
		return -EINVAL;

	get_resolution(go, &width, &height);
	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
	fsize->discrete.width = (width >> fsize->index) & ~0xf;
	fsize->discrete.height = (height >> fsize->index) & ~0xf;
	return 0;
}

static int vidioc_enum_frameintervals(struct file *filp, void *priv,
				      struct v4l2_frmivalenum *fival)
{
	struct go7007 *go = video_drvdata(filp);
	int width, height;
	int i;

	if (fival->index > 4)
		return -EINVAL;

	if (!valid_pixelformat(fival->pixel_format))
		return -EINVAL;

	if (!(go->board_info->sensor_flags & GO7007_SENSOR_SCALING)) {
		get_resolution(go, &width, &height);
		for (i = 0; i <= 2; i++)
			if (fival->width == ((width >> i) & ~0xf) &&
			    fival->height == ((height >> i) & ~0xf))
				break;
		if (i > 2)
			return -EINVAL;
	}
	fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
	fival->discrete.numerator = 1001 * (fival->index + 1);
	fival->discrete.denominator = go->sensor_framerate;
	return 0;
}

static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std)
{
	struct go7007 *go = video_drvdata(file);

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

static int go7007_s_std(struct go7007 *go)
{
	if (go->std & V4L2_STD_625_50) {
		go->standard = GO7007_STD_PAL;
		go->sensor_framerate = 25025;
	} else {
		go->standard = GO7007_STD_NTSC;
		go->sensor_framerate = 30000;
	}

	call_all(&go->v4l2_dev, video, s_std, go->std);
	set_capture_size(go, NULL, 0);
	return 0;
}

static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id std)
{
	struct go7007 *go = video_drvdata(file);

	if (vb2_is_busy(&go->vidq))
		return -EBUSY;

	go->std = std;

	return go7007_s_std(go);
}

static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std)
{
	struct go7007 *go = video_drvdata(file);

	return call_all(&go->v4l2_dev, video, querystd, std);
}

static int vidioc_enum_input(struct file *file, void *priv,
				struct v4l2_input *inp)
{
	struct go7007 *go = video_drvdata(file);

	if (inp->index >= go->board_info->num_inputs)
		return -EINVAL;

	strncpy(inp->name, go->board_info->inputs[inp->index].name,
			sizeof(inp->name));

	/* If this board has a tuner, it will be the first input */
	if ((go->board_info->flags & GO7007_BOARD_HAS_TUNER) &&
			inp->index == 0)
		inp->type = V4L2_INPUT_TYPE_TUNER;
	else
		inp->type = V4L2_INPUT_TYPE_CAMERA;

	if (go->board_info->num_aud_inputs)
		inp->audioset = (1 << go->board_info->num_aud_inputs) - 1;
	else
		inp->audioset = 0;
	inp->tuner = 0;
	if (go->board_info->sensor_flags & GO7007_SENSOR_TV)
		inp->std = video_devdata(file)->tvnorms;
	else
		inp->std = 0;

	return 0;
}


static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
{
	struct go7007 *go = video_drvdata(file);

	*input = go->input;

	return 0;
}

static int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *a)
{
	struct go7007 *go = video_drvdata(file);

	if (a->index >= go->board_info->num_aud_inputs)
		return -EINVAL;
	strlcpy(a->name, go->board_info->aud_inputs[a->index].name,
		sizeof(a->name));
	a->capability = V4L2_AUDCAP_STEREO;
	return 0;
}

static int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *a)
{
	struct go7007 *go = video_drvdata(file);

	a->index = go->aud_input;
	strlcpy(a->name, go->board_info->aud_inputs[go->aud_input].name,
		sizeof(a->name));
	a->capability = V4L2_AUDCAP_STEREO;
	return 0;
}

static int vidioc_s_audio(struct file *file, void *fh,
	const struct v4l2_audio *a)
{
	struct go7007 *go = video_drvdata(file);

	if (a->index >= go->board_info->num_aud_inputs)
		return -EINVAL;
	go->aud_input = a->index;
	v4l2_subdev_call(go->sd_audio, audio, s_routing,
		go->board_info->aud_inputs[go->aud_input].audio_input, 0, 0);
	return 0;
}

static void go7007_s_input(struct go7007 *go)
{
	unsigned int input = go->input;

	v4l2_subdev_call(go->sd_video, video, s_routing,
			go->board_info->inputs[input].video_input, 0,
			go->board_info->video_config);
	if (go->board_info->num_aud_inputs) {
		int aud_input = go->board_info->inputs[input].audio_index;

		v4l2_subdev_call(go->sd_audio, audio, s_routing,
			go->board_info->aud_inputs[aud_input].audio_input, 0, 0);
		go->aud_input = aud_input;
	}
}

static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
{
	struct go7007 *go = video_drvdata(file);

	if (input >= go->board_info->num_inputs)
		return -EINVAL;
	if (vb2_is_busy(&go->vidq))
		return -EBUSY;

	go->input = input;
	go7007_s_input(go);

	return 0;
}

static int vidioc_g_tuner(struct file *file, void *priv,
				struct v4l2_tuner *t)
{
	struct go7007 *go = video_drvdata(file);

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

	strlcpy(t->name, "Tuner", sizeof(t->name));
	return call_all(&go->v4l2_dev, tuner, g_tuner, t);
}

static int vidioc_s_tuner(struct file *file, void *priv,
				const struct v4l2_tuner *t)
{
	struct go7007 *go = video_drvdata(file);

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

	return call_all(&go->v4l2_dev, tuner, s_tuner, t);
}

static int vidioc_g_frequency(struct file *file, void *priv,
				struct v4l2_frequency *f)
{
	struct go7007 *go = video_drvdata(file);

	if (f->tuner)
		return -EINVAL;

	return call_all(&go->v4l2_dev, tuner, g_frequency, f);
}

static int vidioc_s_frequency(struct file *file, void *priv,
				const struct v4l2_frequency *f)
{
	struct go7007 *go = video_drvdata(file);

	if (f->tuner)
		return -EINVAL;

	return call_all(&go->v4l2_dev, tuner, s_frequency, f);
}

static int vidioc_log_status(struct file *file, void *priv)
{
	struct go7007 *go = video_drvdata(file);

	v4l2_ctrl_log_status(file, priv);
	return call_all(&go->v4l2_dev, core, log_status);
}

static int vidioc_subscribe_event(struct v4l2_fh *fh,
				const struct v4l2_event_subscription *sub)
{

	switch (sub->type) {
	case V4L2_EVENT_CTRL:
		return v4l2_ctrl_subscribe_event(fh, sub);
	case V4L2_EVENT_MOTION_DET:
		/* Allow for up to 30 events (1 second for NTSC) to be
		 * stored. */
		return v4l2_event_subscribe(fh, sub, 30, NULL);
	}
	return -EINVAL;
}


static int go7007_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct go7007 *go =
		container_of(ctrl->handler, struct go7007, hdl);
	unsigned y;
	u8 *mt;

	switch (ctrl->id) {
	case V4L2_CID_PIXEL_THRESHOLD0:
		go->modet[0].pixel_threshold = ctrl->val;
		break;
	case V4L2_CID_MOTION_THRESHOLD0:
		go->modet[0].motion_threshold = ctrl->val;
		break;
	case V4L2_CID_MB_THRESHOLD0:
		go->modet[0].mb_threshold = ctrl->val;
		break;
	case V4L2_CID_PIXEL_THRESHOLD1:
		go->modet[1].pixel_threshold = ctrl->val;
		break;
	case V4L2_CID_MOTION_THRESHOLD1:
		go->modet[1].motion_threshold = ctrl->val;
		break;
	case V4L2_CID_MB_THRESHOLD1:
		go->modet[1].mb_threshold = ctrl->val;
		break;
	case V4L2_CID_PIXEL_THRESHOLD2:
		go->modet[2].pixel_threshold = ctrl->val;
		break;
	case V4L2_CID_MOTION_THRESHOLD2:
		go->modet[2].motion_threshold = ctrl->val;
		break;
	case V4L2_CID_MB_THRESHOLD2:
		go->modet[2].mb_threshold = ctrl->val;
		break;
	case V4L2_CID_PIXEL_THRESHOLD3:
		go->modet[3].pixel_threshold = ctrl->val;
		break;
	case V4L2_CID_MOTION_THRESHOLD3:
		go->modet[3].motion_threshold = ctrl->val;
		break;
	case V4L2_CID_MB_THRESHOLD3:
		go->modet[3].mb_threshold = ctrl->val;
		break;
	case V4L2_CID_DETECT_MD_REGION_GRID:
		mt = go->modet_map;
		for (y = 0; y < go->height / 16; y++, mt += go->width / 16)
			memcpy(mt, ctrl->p_new.p_u8 + y * (720 / 16), go->width / 16);
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static struct v4l2_file_operations go7007_fops = {
	.owner		= THIS_MODULE,
	.open		= v4l2_fh_open,
	.release	= vb2_fop_release,
	.unlocked_ioctl	= video_ioctl2,
	.read		= vb2_fop_read,
	.mmap		= vb2_fop_mmap,
	.poll		= vb2_fop_poll,
};

static const struct v4l2_ioctl_ops video_ioctl_ops = {
	.vidioc_querycap          = vidioc_querycap,
	.vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
	.vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
	.vidioc_reqbufs           = vb2_ioctl_reqbufs,
	.vidioc_querybuf          = vb2_ioctl_querybuf,
	.vidioc_qbuf              = vb2_ioctl_qbuf,
	.vidioc_dqbuf             = vb2_ioctl_dqbuf,
	.vidioc_g_std             = vidioc_g_std,
	.vidioc_s_std             = vidioc_s_std,
	.vidioc_querystd          = vidioc_querystd,
	.vidioc_enum_input        = vidioc_enum_input,
	.vidioc_g_input           = vidioc_g_input,
	.vidioc_s_input           = vidioc_s_input,
	.vidioc_enumaudio         = vidioc_enumaudio,
	.vidioc_g_audio           = vidioc_g_audio,
	.vidioc_s_audio           = vidioc_s_audio,
	.vidioc_streamon          = vb2_ioctl_streamon,
	.vidioc_streamoff         = vb2_ioctl_streamoff,
	.vidioc_g_tuner           = vidioc_g_tuner,
	.vidioc_s_tuner           = vidioc_s_tuner,
	.vidioc_g_frequency       = vidioc_g_frequency,
	.vidioc_s_frequency       = vidioc_s_frequency,
	.vidioc_g_parm            = vidioc_g_parm,
	.vidioc_s_parm            = vidioc_s_parm,
	.vidioc_enum_framesizes   = vidioc_enum_framesizes,
	.vidioc_enum_frameintervals = vidioc_enum_frameintervals,
	.vidioc_log_status        = vidioc_log_status,
	.vidioc_subscribe_event   = vidioc_subscribe_event,
	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};

static struct video_device go7007_template = {
	.name		= "go7007",
	.fops		= &go7007_fops,
	.release	= video_device_release_empty,
	.ioctl_ops	= &video_ioctl_ops,
	.tvnorms	= V4L2_STD_ALL,
};

static const struct v4l2_ctrl_ops go7007_ctrl_ops = {
	.s_ctrl = go7007_s_ctrl,
};

static const struct v4l2_ctrl_config go7007_pixel_threshold0_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_PIXEL_THRESHOLD0,
	.name = "Pixel Threshold Region 0",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 20,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_motion_threshold0_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_MOTION_THRESHOLD0,
	.name = "Motion Threshold Region 0",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 80,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_mb_threshold0_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_MB_THRESHOLD0,
	.name = "MB Threshold Region 0",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 200,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_pixel_threshold1_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_PIXEL_THRESHOLD1,
	.name = "Pixel Threshold Region 1",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 20,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_motion_threshold1_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_MOTION_THRESHOLD1,
	.name = "Motion Threshold Region 1",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 80,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_mb_threshold1_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_MB_THRESHOLD1,
	.name = "MB Threshold Region 1",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 200,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_pixel_threshold2_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_PIXEL_THRESHOLD2,
	.name = "Pixel Threshold Region 2",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 20,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_motion_threshold2_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_MOTION_THRESHOLD2,
	.name = "Motion Threshold Region 2",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 80,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_mb_threshold2_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_MB_THRESHOLD2,
	.name = "MB Threshold Region 2",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 200,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_pixel_threshold3_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_PIXEL_THRESHOLD3,
	.name = "Pixel Threshold Region 3",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 20,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_motion_threshold3_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_MOTION_THRESHOLD3,
	.name = "Motion Threshold Region 3",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 80,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_mb_threshold3_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_MB_THRESHOLD3,
	.name = "MB Threshold Region 3",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.def = 200,
	.max = 32767,
	.step = 1,
};

static const struct v4l2_ctrl_config go7007_mb_regions_ctrl = {
	.ops = &go7007_ctrl_ops,
	.id = V4L2_CID_DETECT_MD_REGION_GRID,
	.dims = { 576 / 16, 720 / 16 },
	.max = 3,
	.step = 1,
};

int go7007_v4l2_ctrl_init(struct go7007 *go)
{
	struct v4l2_ctrl_handler *hdl = &go->hdl;
	struct v4l2_ctrl *ctrl;

	v4l2_ctrl_handler_init(hdl, 22);
	go->mpeg_video_gop_size = v4l2_ctrl_new_std(hdl, NULL,
			V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, 34, 1, 15);
	go->mpeg_video_gop_closure = v4l2_ctrl_new_std(hdl, NULL,
			V4L2_CID_MPEG_VIDEO_GOP_CLOSURE, 0, 1, 1, 1);
	go->mpeg_video_bitrate = v4l2_ctrl_new_std(hdl, NULL,
			V4L2_CID_MPEG_VIDEO_BITRATE,
			64000, 10000000, 1, 9800000);
	go->mpeg_video_b_frames = v4l2_ctrl_new_std(hdl, NULL,
			V4L2_CID_MPEG_VIDEO_B_FRAMES, 0, 2, 2, 0);
	go->mpeg_video_rep_seqheader = v4l2_ctrl_new_std(hdl, NULL,
			V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER, 0, 1, 1, 1);

	go->mpeg_video_aspect_ratio = v4l2_ctrl_new_std_menu(hdl, NULL,
			V4L2_CID_MPEG_VIDEO_ASPECT,
			V4L2_MPEG_VIDEO_ASPECT_16x9, 0,
			V4L2_MPEG_VIDEO_ASPECT_1x1);
	ctrl = v4l2_ctrl_new_std(hdl, NULL,
			V4L2_CID_JPEG_ACTIVE_MARKER, 0,
			V4L2_JPEG_ACTIVE_MARKER_DQT |
			V4L2_JPEG_ACTIVE_MARKER_DHT, 0,
			V4L2_JPEG_ACTIVE_MARKER_DQT |
			V4L2_JPEG_ACTIVE_MARKER_DHT);
	if (ctrl)
		ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
	v4l2_ctrl_new_custom(hdl, &go7007_pixel_threshold0_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_motion_threshold0_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_mb_threshold0_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_pixel_threshold1_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_motion_threshold1_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_mb_threshold1_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_pixel_threshold2_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_motion_threshold2_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_mb_threshold2_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_pixel_threshold3_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_motion_threshold3_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_mb_threshold3_ctrl, NULL);
	v4l2_ctrl_new_custom(hdl, &go7007_mb_regions_ctrl, NULL);
	go->modet_mode = v4l2_ctrl_new_std_menu(hdl, NULL,
			V4L2_CID_DETECT_MD_MODE,
			V4L2_DETECT_MD_MODE_REGION_GRID,
			1 << V4L2_DETECT_MD_MODE_THRESHOLD_GRID,
			V4L2_DETECT_MD_MODE_DISABLED);
	if (hdl->error) {
		int rv = hdl->error;

		v4l2_err(&go->v4l2_dev, "Could not register controls\n");
		return rv;
	}
	go->v4l2_dev.ctrl_handler = hdl;
	return 0;
}

int go7007_v4l2_init(struct go7007 *go)
{
	struct video_device *vdev = &go->vdev;
	int rv;

	mutex_init(&go->serialize_lock);
	mutex_init(&go->queue_lock);

	INIT_LIST_HEAD(&go->vidq_active);
	go->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	go->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
	go->vidq.ops = &go7007_video_qops;
	go->vidq.mem_ops = &vb2_vmalloc_memops;
	go->vidq.drv_priv = go;
	go->vidq.buf_struct_size = sizeof(struct go7007_buffer);
	go->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
	go->vidq.lock = &go->queue_lock;
	rv = vb2_queue_init(&go->vidq);
	if (rv)
		return rv;
	*vdev = go7007_template;
	vdev->lock = &go->serialize_lock;
	vdev->queue = &go->vidq;
	video_set_drvdata(vdev, go);
	vdev->v4l2_dev = &go->v4l2_dev;
	if (!v4l2_device_has_op(&go->v4l2_dev, 0, video, querystd))
		v4l2_disable_ioctl(vdev, VIDIOC_QUERYSTD);
	if (!(go->board_info->flags & GO7007_BOARD_HAS_TUNER)) {
		v4l2_disable_ioctl(vdev, VIDIOC_S_FREQUENCY);
		v4l2_disable_ioctl(vdev, VIDIOC_G_FREQUENCY);
		v4l2_disable_ioctl(vdev, VIDIOC_S_TUNER);
		v4l2_disable_ioctl(vdev, VIDIOC_G_TUNER);
	} else {
		struct v4l2_frequency f = {
			.type = V4L2_TUNER_ANALOG_TV,
			.frequency = 980,
		};

		call_all(&go->v4l2_dev, tuner, s_frequency, &f);
	}
	if (!(go->board_info->sensor_flags & GO7007_SENSOR_TV)) {
		v4l2_disable_ioctl(vdev, VIDIOC_G_STD);
		v4l2_disable_ioctl(vdev, VIDIOC_S_STD);
		vdev->tvnorms = 0;
	}
	if (go->board_info->sensor_flags & GO7007_SENSOR_SCALING)
		v4l2_disable_ioctl(vdev, VIDIOC_ENUM_FRAMESIZES);
	if (go->board_info->num_aud_inputs == 0) {
		v4l2_disable_ioctl(vdev, VIDIOC_G_AUDIO);
		v4l2_disable_ioctl(vdev, VIDIOC_S_AUDIO);
		v4l2_disable_ioctl(vdev, VIDIOC_ENUMAUDIO);
	}
	/* Setup correct crystal frequency on this board */
	if (go->board_info->sensor_flags & GO7007_SENSOR_SAA7115)
		v4l2_subdev_call(go->sd_video, video, s_crystal_freq,
				SAA7115_FREQ_24_576_MHZ,
				SAA7115_FREQ_FL_APLL | SAA7115_FREQ_FL_UCGC |
				SAA7115_FREQ_FL_DOUBLE_ASCLK);
	go7007_s_input(go);
	if (go->board_info->sensor_flags & GO7007_SENSOR_TV)
		go7007_s_std(go);
	rv = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
	if (rv < 0)
		return rv;
	dev_info(go->dev, "registered device %s [v4l2]\n",
		 video_device_node_name(vdev));

	return 0;
}

void go7007_v4l2_remove(struct go7007 *go)
{
	v4l2_ctrl_handler_free(&go->hdl);
}