Linux preempt-rt

Check our new training course

Real-Time Linux with PREEMPT_RT

Check our new training course
with Creative Commons CC-BY-SA
lecture and lab materials

Bootlin logo

Elixir Cross Referencer

   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
/*
 *  cx18 ioctl system call
 *
 *  Derived from ivtv-ioctl.c
 *
 *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
 *  Copyright (C) 2008  Andy Walls <awalls@radix.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-chip-ident.h>
#include <linux/i2c-id.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 = fh;
	struct cx18 *cx = id->cx;
	struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;

	pixfmt->width = cx->params.width;
	pixfmt->height = cx->params.height;
	pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
	pixfmt->field = V4L2_FIELD_INTERLACED;
	pixfmt->priv = 0;
	if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
		pixfmt->pixelformat = V4L2_PIX_FMT_HM12;
		/* YUV size is (Y=(h*720) + UV=(h*(720/2))) */
		pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
		pixfmt->bytesperline = 720;
	} 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 = ((struct cx18_open_id *)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 = ((struct cx18_open_id *)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, video, g_fmt, fmt))
		return -EINVAL;

	/* Ensure V4L2 spec compliant output */
	vbifmt->reserved[0] = 0;
	vbifmt->reserved[1] = 0;
	vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
	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 = 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);

	cx18_g_fmt_vid_cap(file, fh, fmt);
	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 = ((struct cx18_open_id *)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 = fh;
	struct cx18 *cx = id->cx;
	int ret;
	int w, h;

	ret = v4l2_prio_check(&cx->prio, &id->prio);
	if (ret)
		return ret;

	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->params.width == w && cx->params.height == h)
		return 0;

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

	cx->params.width = w;
	cx->params.height = h;
	v4l2_subdev_call(cx->sd_av, video, s_fmt, fmt);
	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 = fh;
	struct cx18 *cx = id->cx;
	int ret;

	ret = v4l2_prio_check(&cx->prio, &id->prio);
	if (ret)
		return 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 alot of the passed in fmt under valid
	 * calling conditions
	 */
	ret = v4l2_subdev_call(cx->sd_av, video, s_fmt, fmt);
	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 = fh;
	struct cx18 *cx = id->cx;
	int ret;
	struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;

	ret = v4l2_prio_check(&cx->prio, &id->prio);
	if (ret)
		return ret;

	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, video, s_fmt, fmt);
	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;
}

static int cx18_g_chip_ident(struct file *file, void *fh,
				struct v4l2_dbg_chip_ident *chip)
{
	struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
	int err = 0;

	chip->ident = V4L2_IDENT_NONE;
	chip->revision = 0;
	switch (chip->match.type) {
	case V4L2_CHIP_MATCH_HOST:
		switch (chip->match.addr) {
		case 0:
			chip->ident = V4L2_IDENT_CX23418;
			chip->revision = cx18_read_reg(cx, 0xC72028);
			break;
		case 1:
			/*
			 * The A/V decoder is always present, but in the rare
			 * case that the card doesn't have analog, we don't
			 * use it.  We find it w/o using the cx->sd_av pointer
			 */
			cx18_call_hw(cx, CX18_HW_418_AV,
				     core, g_chip_ident, chip);
			break;
		default:
			/*
			 * Could return ident = V4L2_IDENT_UNKNOWN if we had
			 * other host chips at higher addresses, but we don't
			 */
			err = -EINVAL; /* per V4L2 spec */
			break;
		}
		break;
	case V4L2_CHIP_MATCH_I2C_DRIVER:
		/* If needed, returns V4L2_IDENT_AMBIGUOUS without extra work */
		cx18_call_all(cx, core, g_chip_ident, chip);
		break;
	case V4L2_CHIP_MATCH_I2C_ADDR:
		/*
		 * We could return V4L2_IDENT_UNKNOWN, but we don't do the work
		 * to look if a chip is at the address with no driver.  That's a
		 * dangerous thing to do with EEPROMs anyway.
		 */
		cx18_call_all(cx, core, g_chip_ident, chip);
		break;
	default:
		err = -EINVAL;
		break;
	}
	return err;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int cx18_cxc(struct cx18 *cx, unsigned int cmd, void *arg)
{
	struct v4l2_dbg_register *regs = arg;

	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;
	if (regs->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
		return -EINVAL;

	regs->size = 4;
	if (cmd == VIDIOC_DBG_S_REGISTER)
		cx18_write_enc(cx, regs->val, regs->reg);
	else
		regs->val = cx18_read_enc(cx, regs->reg);
	return 0;
}

static int cx18_g_register(struct file *file, void *fh,
				struct v4l2_dbg_register *reg)
{
	struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;

	if (v4l2_chip_match_host(&reg->match))
		return cx18_cxc(cx, VIDIOC_DBG_G_REGISTER, reg);
	/* FIXME - errors shouldn't be ignored */
	cx18_call_all(cx, core, g_register, reg);
	return 0;
}

static int cx18_s_register(struct file *file, void *fh,
				struct v4l2_dbg_register *reg)
{
	struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;

	if (v4l2_chip_match_host(&reg->match))
		return cx18_cxc(cx, VIDIOC_DBG_S_REGISTER, reg);
	/* FIXME - errors shouldn't be ignored */
	cx18_call_all(cx, core, s_register, reg);
	return 0;
}
#endif

static int cx18_g_priority(struct file *file, void *fh, enum v4l2_priority *p)
{
	struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;

	*p = v4l2_prio_max(&cx->prio);
	return 0;
}

static int cx18_s_priority(struct file *file, void *fh, enum v4l2_priority prio)
{
	struct cx18_open_id *id = fh;
	struct cx18 *cx = id->cx;

	return v4l2_prio_change(&cx->prio, &id->prio, prio);
}

static int cx18_querycap(struct file *file, void *fh,
				struct v4l2_capability *vcap)
{
	struct cx18 *cx = ((struct cx18_open_id *)fh)->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->version = CX18_DRIVER_VERSION; 	    /* version */
	vcap->capabilities = cx->v4l2_cap; 	    /* capabilities */
	return 0;
}

static int cx18_enumaudio(struct file *file, void *fh, struct v4l2_audio *vin)
{
	struct cx18 *cx = ((struct cx18_open_id *)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 = ((struct cx18_open_id *)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, struct v4l2_audio *vout)
{
	struct cx18 *cx = ((struct cx18_open_id *)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 = ((struct cx18_open_id *)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 = ((struct cx18_open_id *)fh)->cx;

	if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;
	cropcap->bounds.top = cropcap->bounds.left = 0;
	cropcap->bounds.width = 720;
	cropcap->bounds.height = cx->is_50hz ? 576 : 480;
	cropcap->pixelaspect.numerator = cx->is_50hz ? 59 : 10;
	cropcap->pixelaspect.denominator = cx->is_50hz ? 54 : 11;
	cropcap->defrect = cropcap->bounds;
	return 0;
}

static int cx18_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
{
	struct cx18_open_id *id = fh;
	struct cx18 *cx = id->cx;
	int ret;

	ret = v4l2_prio_check(&cx->prio, &id->prio);
	if (ret)
		return ret;

	if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;
	CX18_DEBUG_WARN("VIDIOC_S_CROP not implemented\n");
	return -EINVAL;
}

static int cx18_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
{
	struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;

	if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;
	CX18_DEBUG_WARN("VIDIOC_G_CROP not implemented\n");
	return -EINVAL;
}

static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
					struct v4l2_fmtdesc *fmt)
{
	static 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 }
		}
	};

	if (fmt->index > 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 = ((struct cx18_open_id *)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 = fh;
	struct cx18 *cx = id->cx;
	int ret;

	ret = v4l2_prio_check(&cx->prio, &id->prio);
	if (ret)
		return ret;

	if (inp < 0 || 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;

	/* 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 = ((struct cx18_open_id *)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, struct v4l2_frequency *vf)
{
	struct cx18_open_id *id = fh;
	struct cx18 *cx = id->cx;
	int ret;

	ret = v4l2_prio_check(&cx->prio, &id->prio);
	if (ret)
		return ret;

	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 = ((struct cx18_open_id *)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 = fh;
	struct cx18 *cx = id->cx;
	int ret;

	ret = v4l2_prio_check(&cx->prio, &id->prio);
	if (ret)
		return ret;

	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->params.is_50hz = cx->is_50hz = !cx->is_60hz;
	cx->params.width = 720;
	cx->params.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, core, s_std, cx->std);
	return 0;
}

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

	ret = v4l2_prio_check(&cx->prio, &id->prio);
	if (ret)
		return ret;

	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 = ((struct cx18_open_id *)fh)->cx;

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

	cx18_call_all(cx, tuner, g_tuner, vt);

	if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) {
		strlcpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
		vt->type = V4L2_TUNER_RADIO;
	} else {
		strlcpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
		vt->type = V4L2_TUNER_ANALOG_TV;
	}

	return 0;
}

static int cx18_g_sliced_vbi_cap(struct file *file, void *fh,
					struct v4l2_sliced_vbi_cap *cap)
{
	struct cx18 *cx = ((struct cx18_open_id *)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_g_enc_index(struct file *file, void *fh,
				struct v4l2_enc_idx *idx)
{
	return -EINVAL;
}

static int cx18_encoder_cmd(struct file *file, void *fh,
				struct v4l2_encoder_cmd *enc)
{
	struct cx18_open_id *id = 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 = ((struct cx18_open_id *)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 = ((struct cx18_open_id *)fh)->cx;
	struct v4l2_input vidin;
	struct v4l2_audio audin;
	int i;

	CX18_INFO("=================  START STATUS CARD #%d  "
		  "=================\n", cx->instance);
	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");
	cx2341x_log_status(&cx->params, 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 == 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.buffers) * 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);
	CX18_INFO("==================  END STATUS CARD #%d  "
		  "==================\n", cx->instance);
	return 0;
}

static long cx18_default(struct file *file, void *fh, int cmd, void *arg)
{
	struct cx18 *cx = ((struct cx18_open_id *)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 -EINVAL;
	}
	return 0;
}

long cx18_v4l2_ioctl(struct file *filp, unsigned int cmd,
		    unsigned long arg)
{
	struct video_device *vfd = video_devdata(filp);
	struct cx18_open_id *id = (struct cx18_open_id *)filp->private_data;
	struct cx18 *cx = id->cx;
	long res;

	mutex_lock(&cx->serialize_lock);

	/* FIXME - consolidate v4l2_prio_check()'s here */

	if (cx18_debug & CX18_DBGFLG_IOCTL)
		vfd->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
	res = video_ioctl2(filp, cmd, arg);
	vfd->debug = 0;
	mutex_unlock(&cx->serialize_lock);
	return res;
}

static const struct v4l2_ioctl_ops cx18_ioctl_ops = {
	.vidioc_querycap                = cx18_querycap,
	.vidioc_g_priority              = cx18_g_priority,
	.vidioc_s_priority              = cx18_s_priority,
	.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_s_crop                  = cx18_s_crop,
	.vidioc_g_crop                  = cx18_g_crop,
	.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,
	.vidioc_g_chip_ident            = cx18_g_chip_ident,
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.vidioc_g_register              = cx18_g_register,
	.vidioc_s_register              = cx18_s_register,
#endif
	.vidioc_default                 = cx18_default,
	.vidioc_queryctrl               = cx18_queryctrl,
	.vidioc_querymenu               = cx18_querymenu,
	.vidioc_g_ext_ctrls             = cx18_g_ext_ctrls,
	.vidioc_s_ext_ctrls             = cx18_s_ext_ctrls,
	.vidioc_try_ext_ctrls           = cx18_try_ext_ctrls,
};

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