git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/cx18/cx18-ioctl.c

   1 /*
   2  *  cx18 ioctl system call
   3  *
   4  *  Derived from ivtv-ioctl.c
   5  *
   6  *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  21  *  02111-1307  USA
  22  */
  23
  24 #include "cx18-driver.h"
  25 #include "cx18-version.h"
  26 #include "cx18-mailbox.h"
  27 #include "cx18-i2c.h"
  28 #include "cx18-queue.h"
  29 #include "cx18-fileops.h"
  30 #include "cx18-vbi.h"
  31 #include "cx18-audio.h"
  32 #include "cx18-video.h"
  33 #include "cx18-streams.h"
  34 #include "cx18-ioctl.h"
  35 #include "cx18-gpio.h"
  36 #include "cx18-controls.h"
  37 #include "cx18-cards.h"
  38 #include "cx18-av-core.h"
  39 #include <media/tveeprom.h>
  40 #include <media/v4l2-chip-ident.h>
  41 #include <linux/i2c-id.h>
  42
  43 u16 service2vbi(int type)
  44 {
  45         switch (type) {
  46         case V4L2_SLICED_TELETEXT_B:
  47                 return CX18_SLICED_TYPE_TELETEXT_B;
  48         case V4L2_SLICED_CAPTION_525:
  49                 return CX18_SLICED_TYPE_CAPTION_525;
  50         case V4L2_SLICED_WSS_625:
  51                 return CX18_SLICED_TYPE_WSS_625;
  52         case V4L2_SLICED_VPS:
  53                 return CX18_SLICED_TYPE_VPS;
  54         default:
  55                 return 0;
  56         }
  57 }
  58
  59 static int valid_service_line(int field, int line, int is_pal)
  60 {
  61         return (is_pal && line >= 6 && (line != 23 || field == 0)) ||
  62                (!is_pal && line >= 10 && line < 22);
  63 }
  64
  65 static u16 select_service_from_set(int field, int line, u16 set, int is_pal)
  66 {
  67         u16 valid_set = (is_pal ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525);
  68         int i;
  69
  70         set = set & valid_set;
  71         if (set == 0 || !valid_service_line(field, line, is_pal))
  72                 return 0;
  73         if (!is_pal) {
  74                 if (line == 21 && (set & V4L2_SLICED_CAPTION_525))
  75                         return V4L2_SLICED_CAPTION_525;
  76         } else {
  77                 if (line == 16 && field == 0 && (set & V4L2_SLICED_VPS))
  78                         return V4L2_SLICED_VPS;
  79                 if (line == 23 && field == 0 && (set & V4L2_SLICED_WSS_625))
  80                         return V4L2_SLICED_WSS_625;
  81                 if (line == 23)
  82                         return 0;
  83         }
  84         for (i = 0; i < 32; i++) {
  85                 if ((1 << i) & set)
  86                         return 1 << i;
  87         }
  88         return 0;
  89 }
  90
  91 void expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
  92 {
  93         u16 set = fmt->service_set;
  94         int f, l;
  95
  96         fmt->service_set = 0;
  97         for (f = 0; f < 2; f++) {
  98                 for (l = 0; l < 24; l++)
  99                         fmt->service_lines[f][l] = select_service_from_set(f, l, set, is_pal);
 100         }
 101 }
 102
 103 static int check_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
 104 {
 105         int f, l;
 106         u16 set = 0;
 107
 108         for (f = 0; f < 2; f++) {
 109                 for (l = 0; l < 24; l++) {
 110                         fmt->service_lines[f][l] = select_service_from_set(f, l, fmt->service_lines[f][l], is_pal);
 111                         set |= fmt->service_lines[f][l];
 112                 }
 113         }
 114         return set != 0;
 115 }
 116
 117 u16 get_service_set(struct v4l2_sliced_vbi_format *fmt)
 118 {
 119         int f, l;
 120         u16 set = 0;
 121
 122         for (f = 0; f < 2; f++) {
 123                 for (l = 0; l < 24; l++)
 124                         set |= fmt->service_lines[f][l];
 125         }
 126         return set;
 127 }
 128
 129 static const struct {
 130         v4l2_std_id  std;
 131         char        *name;
 132 } enum_stds[] = {
 133         { V4L2_STD_PAL_BG | V4L2_STD_PAL_H, "PAL-BGH" },
 134         { V4L2_STD_PAL_DK,    "PAL-DK"    },
 135         { V4L2_STD_PAL_I,     "PAL-I"     },
 136         { V4L2_STD_PAL_M,     "PAL-M"     },
 137         { V4L2_STD_PAL_N,     "PAL-N"     },
 138         { V4L2_STD_PAL_Nc,    "PAL-Nc"    },
 139         { V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H, "SECAM-BGH" },
 140         { V4L2_STD_SECAM_DK,  "SECAM-DK"  },
 141         { V4L2_STD_SECAM_L,   "SECAM-L"   },
 142         { V4L2_STD_SECAM_LC,  "SECAM-L'"  },
 143         { V4L2_STD_NTSC_M,    "NTSC-M"    },
 144         { V4L2_STD_NTSC_M_JP, "NTSC-J"    },
 145         { V4L2_STD_NTSC_M_KR, "NTSC-K"    },
 146 };
 147
 148 static const struct v4l2_standard cx18_std_60hz = {
 149         .frameperiod = {.numerator = 1001, .denominator = 30000},
 150         .framelines = 525,
 151 };
 152
 153 static const struct v4l2_standard cx18_std_50hz = {
 154         .frameperiod = { .numerator = 1, .denominator = 25 },
 155         .framelines = 625,
 156 };
 157
 158 static int cx18_cxc(struct cx18 *cx, unsigned int cmd, void *arg)
 159 {
 160         struct v4l2_register *regs = arg;
 161         unsigned long flags;
 162
 163         if (!capable(CAP_SYS_ADMIN))
 164                 return -EPERM;
 165         if (regs->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
 166                 return -EINVAL;
 167
 168         spin_lock_irqsave(&cx18_cards_lock, flags);
 169         if (cmd == VIDIOC_DBG_G_REGISTER)
 170                 regs->val = read_enc(regs->reg);
 171         else
 172                 write_enc(regs->val, regs->reg);
 173         spin_unlock_irqrestore(&cx18_cards_lock, flags);
 174         return 0;
 175 }
 176
 177 static int cx18_get_fmt(struct cx18 *cx, int streamtype, struct v4l2_format *fmt)
 178 {
 179         switch (fmt->type) {
 180         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 181                 fmt->fmt.pix.width = cx->params.width;
 182                 fmt->fmt.pix.height = cx->params.height;
 183                 fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 184                 fmt->fmt.pix.field = V4L2_FIELD_INTERLACED;
 185                 if (streamtype == CX18_ENC_STREAM_TYPE_YUV) {
 186                         fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_HM12;
 187                         /* YUV size is (Y=(h*w) + UV=(h*(w/2))) */
 188                         fmt->fmt.pix.sizeimage =
 189                                 fmt->fmt.pix.height * fmt->fmt.pix.width +
 190                                 fmt->fmt.pix.height * (fmt->fmt.pix.width / 2);
 191                 } else {
 192                         fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
 193                         fmt->fmt.pix.sizeimage = 128 * 1024;
 194                 }
 195                 break;
 196
 197         case V4L2_BUF_TYPE_VBI_CAPTURE:
 198                 fmt->fmt.vbi.sampling_rate = 27000000;
 199                 fmt->fmt.vbi.offset = 248;
 200                 fmt->fmt.vbi.samples_per_line = cx->vbi.raw_decoder_line_size - 4;
 201                 fmt->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
 202                 fmt->fmt.vbi.start[0] = cx->vbi.start[0];
 203                 fmt->fmt.vbi.start[1] = cx->vbi.start[1];
 204                 fmt->fmt.vbi.count[0] = fmt->fmt.vbi.count[1] = cx->vbi.count;
 205                 break;
 206
 207         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 208         {
 209                 struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
 210
 211                 vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
 212                 memset(vbifmt->reserved, 0, sizeof(vbifmt->reserved));
 213                 memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
 214
 215                 cx18_av_cmd(cx, VIDIOC_G_FMT, fmt);
 216                 vbifmt->service_set = get_service_set(vbifmt);
 217                 break;
 218         }
 219         default:
 220                 return -EINVAL;
 221         }
 222         return 0;
 223 }
 224
 225 static int cx18_try_or_set_fmt(struct cx18 *cx, int streamtype,
 226                 struct v4l2_format *fmt, int set_fmt)
 227 {
 228         struct v4l2_sliced_vbi_format *vbifmt = &fmt->fmt.sliced;
 229         u16 set;
 230
 231         /* set window size */
 232         if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 233                 int w = fmt->fmt.pix.width;
 234                 int h = fmt->fmt.pix.height;
 235
 236                 if (w > 720)
 237                         w = 720;
 238                 else if (w < 1)
 239                         w = 1;
 240                 if (h > (cx->is_50hz ? 576 : 480))
 241                         h = (cx->is_50hz ? 576 : 480);
 242                 else if (h < 2)
 243                         h = 2;
 244                 cx18_get_fmt(cx, streamtype, fmt);
 245                 fmt->fmt.pix.width = w;
 246                 fmt->fmt.pix.height = h;
 247
 248                 if (!set_fmt || (cx->params.width == w && cx->params.height == h))
 249                         return 0;
 250                 if (atomic_read(&cx->capturing) > 0)
 251                         return -EBUSY;
 252
 253                 cx->params.width = w;
 254                 cx->params.height = h;
 255                 if (w != 720 || h != (cx->is_50hz ? 576 : 480))
 256                         cx->params.video_temporal_filter = 0;
 257                 else
 258                         cx->params.video_temporal_filter = 8;
 259                 cx18_av_cmd(cx, VIDIOC_S_FMT, fmt);
 260                 return cx18_get_fmt(cx, streamtype, fmt);
 261         }
 262
 263         /* set raw VBI format */
 264         if (fmt->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 265                 if (set_fmt && streamtype == CX18_ENC_STREAM_TYPE_VBI &&
 266                     cx->vbi.sliced_in->service_set &&
 267                     atomic_read(&cx->capturing) > 0)
 268                         return -EBUSY;
 269                 if (set_fmt) {
 270                         cx->vbi.sliced_in->service_set = 0;
 271                         cx18_av_cmd(cx, VIDIOC_S_FMT, &cx->vbi.in);
 272                 }
 273                 return cx18_get_fmt(cx, streamtype, fmt);
 274         }
 275
 276         /* any else but sliced VBI capture is an error */
 277         if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
 278                 return -EINVAL;
 279
 280         /* TODO: implement sliced VBI, for now silently return 0 */
 281         return 0;
 282
 283         /* set sliced VBI capture format */
 284         vbifmt->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
 285         memset(vbifmt->reserved, 0, sizeof(vbifmt->reserved));
 286
 287         if (vbifmt->service_set)
 288                 expand_service_set(vbifmt, cx->is_50hz);
 289         set = check_service_set(vbifmt, cx->is_50hz);
 290         vbifmt->service_set = get_service_set(vbifmt);
 291
 292         if (!set_fmt)
 293                 return 0;
 294         if (set == 0)
 295                 return -EINVAL;
 296         if (atomic_read(&cx->capturing) > 0 && cx->vbi.sliced_in->service_set == 0)
 297                 return -EBUSY;
 298         cx18_av_cmd(cx, VIDIOC_S_FMT, fmt);
 299         memcpy(cx->vbi.sliced_in, vbifmt, sizeof(*cx->vbi.sliced_in));
 300         return 0;
 301 }
 302
 303 static int cx18_debug_ioctls(struct file *filp, unsigned int cmd, void *arg)
 304 {
 305         struct cx18_open_id *id = (struct cx18_open_id *)filp->private_data;
 306         struct cx18 *cx = id->cx;
 307         struct v4l2_register *reg = arg;
 308
 309         switch (cmd) {
 310         /* ioctls to allow direct access to the encoder registers for testing */
 311         case VIDIOC_DBG_G_REGISTER:
 312                 if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
 313                         return cx18_cxc(cx, cmd, arg);
 314                 if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
 315                         return cx18_i2c_id(cx, reg->match_chip, cmd, arg);
 316                 return cx18_call_i2c_client(cx, reg->match_chip, cmd, arg);
 317
 318         case VIDIOC_DBG_S_REGISTER:
 319                 if (v4l2_chip_match_host(reg->match_type, reg->match_chip))
 320                         return cx18_cxc(cx, cmd, arg);
 321                 if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
 322                         return cx18_i2c_id(cx, reg->match_chip, cmd, arg);
 323                 return cx18_call_i2c_client(cx, reg->match_chip, cmd, arg);
 324
 325         case VIDIOC_G_CHIP_IDENT: {
 326                 struct v4l2_chip_ident *chip = arg;
 327
 328                 chip->ident = V4L2_IDENT_NONE;
 329                 chip->revision = 0;
 330                 if (reg->match_type == V4L2_CHIP_MATCH_HOST) {
 331                         if (v4l2_chip_match_host(reg->match_type, reg->match_chip)) {
 332                                 struct v4l2_chip_ident *chip = arg;
 333
 334                                 chip->ident = V4L2_IDENT_CX23418;
 335                         }
 336                         return 0;
 337                 }
 338                 if (reg->match_type == V4L2_CHIP_MATCH_I2C_DRIVER)
 339                         return cx18_i2c_id(cx, reg->match_chip, cmd, arg);
 340                 if (reg->match_type == V4L2_CHIP_MATCH_I2C_ADDR)
 341                         return cx18_call_i2c_client(cx, reg->match_chip, cmd, arg);
 342                 return -EINVAL;
 343         }
 344
 345         case VIDIOC_INT_S_AUDIO_ROUTING: {
 346                 struct v4l2_routing *route = arg;
 347
 348                 cx18_audio_set_route(cx, route);
 349                 break;
 350         }
 351
 352         default:
 353                 return -EINVAL;
 354         }
 355         return 0;
 356 }
 357
 358 int cx18_v4l2_ioctls(struct cx18 *cx, struct file *filp, unsigned cmd, void *arg)
 359 {
 360         struct cx18_open_id *id = NULL;
 361
 362         if (filp)
 363                 id = (struct cx18_open_id *)filp->private_data;
 364
 365         switch (cmd) {
 366         case VIDIOC_G_PRIORITY:
 367         {
 368                 enum v4l2_priority *p = arg;
 369
 370                 *p = v4l2_prio_max(&cx->prio);
 371                 break;
 372         }
 373
 374         case VIDIOC_S_PRIORITY:
 375         {
 376                 enum v4l2_priority *prio = arg;
 377
 378                 return v4l2_prio_change(&cx->prio, &id->prio, *prio);
 379         }
 380
 381         case VIDIOC_QUERYCAP:{
 382                 struct v4l2_capability *vcap = arg;
 383
 384                 memset(vcap, 0, sizeof(*vcap));
 385                 strlcpy(vcap->driver, CX18_DRIVER_NAME, sizeof(vcap->driver));
 386                 strlcpy(vcap->card, cx->card_name, sizeof(vcap->card));
 387                 strlcpy(vcap->bus_info, pci_name(cx->dev), sizeof(vcap->bus_info));
 388                 vcap->version = CX18_DRIVER_VERSION;        /* version */
 389                 vcap->capabilities = cx->v4l2_cap;          /* capabilities */
 390
 391                 /* reserved.. must set to 0! */
 392                 vcap->reserved[0] = vcap->reserved[1] =
 393                         vcap->reserved[2] = vcap->reserved[3] = 0;
 394                 break;
 395         }
 396
 397         case VIDIOC_ENUMAUDIO:{
 398                 struct v4l2_audio *vin = arg;
 399
 400                 return cx18_get_audio_input(cx, vin->index, vin);
 401         }
 402
 403         case VIDIOC_G_AUDIO:{
 404                 struct v4l2_audio *vin = arg;
 405
 406                 vin->index = cx->audio_input;
 407                 return cx18_get_audio_input(cx, vin->index, vin);
 408         }
 409
 410         case VIDIOC_S_AUDIO:{
 411                 struct v4l2_audio *vout = arg;
 412
 413                 if (vout->index >= cx->nof_audio_inputs)
 414                         return -EINVAL;
 415                 cx->audio_input = vout->index;
 416                 cx18_audio_set_io(cx);
 417                 break;
 418         }
 419
 420         case VIDIOC_ENUMINPUT:{
 421                 struct v4l2_input *vin = arg;
 422
 423                 /* set it to defaults from our table */
 424                 return cx18_get_input(cx, vin->index, vin);
 425         }
 426
 427         case VIDIOC_TRY_FMT:
 428         case VIDIOC_S_FMT: {
 429                 struct v4l2_format *fmt = arg;
 430
 431                 return cx18_try_or_set_fmt(cx, id->type, fmt, cmd == VIDIOC_S_FMT);
 432         }
 433
 434         case VIDIOC_G_FMT: {
 435                 struct v4l2_format *fmt = arg;
 436                 int type = fmt->type;
 437
 438                 memset(fmt, 0, sizeof(*fmt));
 439                 fmt->type = type;
 440                 return cx18_get_fmt(cx, id->type, fmt);
 441         }
 442
 443         case VIDIOC_CROPCAP: {
 444                 struct v4l2_cropcap *cropcap = arg;
 445
 446                 if (cropcap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 447                         return -EINVAL;
 448                 cropcap->bounds.top = cropcap->bounds.left = 0;
 449                 cropcap->bounds.width = 720;
 450                 cropcap->bounds.height = cx->is_50hz ? 576 : 480;
 451                 cropcap->pixelaspect.numerator = cx->is_50hz ? 59 : 10;
 452                 cropcap->pixelaspect.denominator = cx->is_50hz ? 54 : 11;
 453                 cropcap->defrect = cropcap->bounds;
 454                 return 0;
 455         }
 456
 457         case VIDIOC_S_CROP: {
 458                 struct v4l2_crop *crop = arg;
 459
 460                 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 461                         return -EINVAL;
 462                 return cx18_av_cmd(cx, VIDIOC_S_CROP, arg);
 463         }
 464
 465         case VIDIOC_G_CROP: {
 466                 struct v4l2_crop *crop = arg;
 467
 468                 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 469                         return -EINVAL;
 470                 return cx18_av_cmd(cx, VIDIOC_G_CROP, arg);
 471         }
 472
 473         case VIDIOC_ENUM_FMT: {
 474                 static struct v4l2_fmtdesc formats[] = {
 475                         { 0, 0, 0,
 476                           "HM12 (YUV 4:1:1)", V4L2_PIX_FMT_HM12,
 477                           { 0, 0, 0, 0 }
 478                         },
 479                         { 1, 0, V4L2_FMT_FLAG_COMPRESSED,
 480                           "MPEG", V4L2_PIX_FMT_MPEG,
 481                           { 0, 0, 0, 0 }
 482                         }
 483                 };
 484                 struct v4l2_fmtdesc *fmt = arg;
 485                 enum v4l2_buf_type type = fmt->type;
 486
 487                 switch (type) {
 488                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 489                         break;
 490                 default:
 491                         return -EINVAL;
 492                 }
 493                 if (fmt->index > 1)
 494                         return -EINVAL;
 495                 *fmt = formats[fmt->index];
 496                 fmt->type = type;
 497                 return 0;
 498         }
 499
 500         case VIDIOC_G_INPUT:{
 501                 *(int *)arg = cx->active_input;
 502                 break;
 503         }
 504
 505         case VIDIOC_S_INPUT:{
 506                 int inp = *(int *)arg;
 507
 508                 if (inp < 0 || inp >= cx->nof_inputs)
 509                         return -EINVAL;
 510
 511                 if (inp == cx->active_input) {
 512                         CX18_DEBUG_INFO("Input unchanged\n");
 513                         break;
 514                 }
 515                 CX18_DEBUG_INFO("Changing input from %d to %d\n",
 516                                 cx->active_input, inp);
 517
 518                 cx->active_input = inp;
 519                 /* Set the audio input to whatever is appropriate for the
 520                    input type. */
 521                 cx->audio_input = cx->card->video_inputs[inp].audio_index;
 522
 523                 /* prevent others from messing with the streams until
 524                    we're finished changing inputs. */
 525                 cx18_mute(cx);
 526                 cx18_video_set_io(cx);
 527                 cx18_audio_set_io(cx);
 528                 cx18_unmute(cx);
 529                 break;
 530         }
 531
 532         case VIDIOC_G_FREQUENCY:{
 533                 struct v4l2_frequency *vf = arg;
 534
 535                 if (vf->tuner != 0)
 536                         return -EINVAL;
 537                 cx18_call_i2c_clients(cx, cmd, arg);
 538                 break;
 539         }
 540
 541         case VIDIOC_S_FREQUENCY:{
 542                 struct v4l2_frequency vf = *(struct v4l2_frequency *)arg;
 543
 544                 if (vf.tuner != 0)
 545                         return -EINVAL;
 546
 547                 cx18_mute(cx);
 548                 CX18_DEBUG_INFO("v4l2 ioctl: set frequency %d\n", vf.frequency);
 549                 cx18_call_i2c_clients(cx, cmd, &vf);
 550                 cx18_unmute(cx);
 551                 break;
 552         }
 553
 554         case VIDIOC_ENUMSTD:{
 555                 struct v4l2_standard *vs = arg;
 556                 int idx = vs->index;
 557
 558                 if (idx < 0 || idx >= ARRAY_SIZE(enum_stds))
 559                         return -EINVAL;
 560
 561                 *vs = (enum_stds[idx].std & V4L2_STD_525_60) ?
 562                                 cx18_std_60hz : cx18_std_50hz;
 563                 vs->index = idx;
 564                 vs->id = enum_stds[idx].std;
 565                 strlcpy(vs->name, enum_stds[idx].name, sizeof(vs->name));
 566                 break;
 567         }
 568
 569         case VIDIOC_G_STD:{
 570                 *(v4l2_std_id *) arg = cx->std;
 571                 break;
 572         }
 573
 574         case VIDIOC_S_STD: {
 575                 v4l2_std_id std = *(v4l2_std_id *) arg;
 576
 577                 if ((std & V4L2_STD_ALL) == 0)
 578                         return -EINVAL;
 579
 580                 if (std == cx->std)
 581                         break;
 582
 583                 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ||
 584                     atomic_read(&cx->capturing) > 0) {
 585                         /* Switching standard would turn off the radio or mess
 586                            with already running streams, prevent that by
 587                            returning EBUSY. */
 588                         return -EBUSY;
 589                 }
 590
 591                 cx->std = std;
 592                 cx->is_60hz = (std & V4L2_STD_525_60) ? 1 : 0;
 593                 cx->params.is_50hz = cx->is_50hz = !cx->is_60hz;
 594                 cx->params.width = 720;
 595                 cx->params.height = cx->is_50hz ? 576 : 480;
 596                 cx->vbi.count = cx->is_50hz ? 18 : 12;
 597                 cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
 598                 cx->vbi.start[1] = cx->is_50hz ? 318 : 273;
 599                 cx->vbi.sliced_decoder_line_size = cx->is_60hz ? 272 : 284;
 600                 CX18_DEBUG_INFO("Switching standard to %llx.\n", (unsigned long long)cx->std);
 601
 602                 /* Tuner */
 603                 cx18_call_i2c_clients(cx, VIDIOC_S_STD, &cx->std);
 604                 break;
 605         }
 606
 607         case VIDIOC_S_TUNER: {  /* Setting tuner can only set audio mode */
 608                 struct v4l2_tuner *vt = arg;
 609
 610                 if (vt->index != 0)
 611                         return -EINVAL;
 612
 613                 cx18_call_i2c_clients(cx, VIDIOC_S_TUNER, vt);
 614                 break;
 615         }
 616
 617         case VIDIOC_G_TUNER: {
 618                 struct v4l2_tuner *vt = arg;
 619
 620                 if (vt->index != 0)
 621                         return -EINVAL;
 622
 623                 memset(vt, 0, sizeof(*vt));
 624                 cx18_call_i2c_clients(cx, VIDIOC_G_TUNER, vt);
 625
 626                 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) {
 627                         strlcpy(vt->name, "cx18 Radio Tuner", sizeof(vt->name));
 628                         vt->type = V4L2_TUNER_RADIO;
 629                 } else {
 630                         strlcpy(vt->name, "cx18 TV Tuner", sizeof(vt->name));
 631                         vt->type = V4L2_TUNER_ANALOG_TV;
 632                 }
 633                 break;
 634         }
 635
 636         case VIDIOC_G_SLICED_VBI_CAP: {
 637                 struct v4l2_sliced_vbi_cap *cap = arg;
 638                 int set = cx->is_50hz ? V4L2_SLICED_VBI_625 : V4L2_SLICED_VBI_525;
 639                 int f, l;
 640                 enum v4l2_buf_type type = cap->type;
 641
 642                 memset(cap, 0, sizeof(*cap));
 643                 cap->type = type;
 644                 if (type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) {
 645                         for (f = 0; f < 2; f++) {
 646                                 for (l = 0; l < 24; l++) {
 647                                         if (valid_service_line(f, l, cx->is_50hz))
 648                                                 cap->service_lines[f][l] = set;
 649                                 }
 650                         }
 651                         return 0;
 652                 }
 653                 return -EINVAL;
 654         }
 655
 656         case VIDIOC_ENCODER_CMD:
 657         case VIDIOC_TRY_ENCODER_CMD: {
 658                 struct v4l2_encoder_cmd *enc = arg;
 659                 int try = cmd == VIDIOC_TRY_ENCODER_CMD;
 660
 661                 memset(&enc->raw, 0, sizeof(enc->raw));
 662                 switch (enc->cmd) {
 663                 case V4L2_ENC_CMD_START:
 664                         enc->flags = 0;
 665                         if (try)
 666                                 return 0;
 667                         return cx18_start_capture(id);
 668
 669                 case V4L2_ENC_CMD_STOP:
 670                         enc->flags &= V4L2_ENC_CMD_STOP_AT_GOP_END;
 671                         if (try)
 672                                 return 0;
 673                         cx18_stop_capture(id, enc->flags & V4L2_ENC_CMD_STOP_AT_GOP_END);
 674                         return 0;
 675
 676                 case V4L2_ENC_CMD_PAUSE:
 677                         enc->flags = 0;
 678                         if (try)
 679                                 return 0;
 680                         if (!atomic_read(&cx->capturing))
 681                                 return -EPERM;
 682                         if (test_and_set_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
 683                                 return 0;
 684                         cx18_mute(cx);
 685                         cx18_vapi(cx, CX18_CPU_CAPTURE_PAUSE, 1, cx18_find_handle(cx));
 686                         break;
 687
 688                 case V4L2_ENC_CMD_RESUME:
 689                         enc->flags = 0;
 690                         if (try)
 691                                 return 0;
 692                         if (!atomic_read(&cx->capturing))
 693                                 return -EPERM;
 694                         if (!test_and_clear_bit(CX18_F_I_ENC_PAUSED, &cx->i_flags))
 695                                 return 0;
 696                         cx18_vapi(cx, CX18_CPU_CAPTURE_RESUME, 1, cx18_find_handle(cx));
 697                         cx18_unmute(cx);
 698                         break;
 699                 default:
 700                         return -EINVAL;
 701                 }
 702                 break;
 703         }
 704
 705         case VIDIOC_LOG_STATUS:
 706         {
 707                 struct v4l2_input vidin;
 708                 struct v4l2_audio audin;
 709                 int i;
 710
 711                 CX18_INFO("=================  START STATUS CARD #%d  =================\n", cx->num);
 712                 if (cx->hw_flags & CX18_HW_TVEEPROM) {
 713                         struct tveeprom tv;
 714
 715                         cx18_read_eeprom(cx, &tv);
 716                 }
 717                 cx18_call_i2c_clients(cx, VIDIOC_LOG_STATUS, NULL);
 718                 cx18_get_input(cx, cx->active_input, &vidin);
 719                 cx18_get_audio_input(cx, cx->audio_input, &audin);
 720                 CX18_INFO("Video Input: %s\n", vidin.name);
 721                 CX18_INFO("Audio Input: %s\n", audin.name);
 722                 CX18_INFO("Tuner: %s\n",
 723                         test_bit(CX18_F_I_RADIO_USER, &cx->i_flags) ?
 724                         "Radio" : "TV");
 725                 cx2341x_log_status(&cx->params, cx->name);
 726                 CX18_INFO("Status flags: 0x%08lx\n", cx->i_flags);
 727                 for (i = 0; i < CX18_MAX_STREAMS; i++) {
 728                         struct cx18_stream *s = &cx->streams[i];
 729
 730                         if (s->v4l2dev == NULL || s->buffers == 0)
 731                                 continue;
 732                         CX18_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n",
 733                                 s->name, s->s_flags,
 734                                 (s->buffers - s->q_free.buffers) * 100 / s->buffers,
 735                                 (s->buffers * s->buf_size) / 1024, s->buffers);
 736                 }
 737                 CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
 738                                 (long long)cx->mpg_data_received,
 739                                 (long long)cx->vbi_data_inserted);
 740                 CX18_INFO("==================  END STATUS CARD #%d  ==================\n", cx->num);
 741                 break;
 742         }
 743
 744         default:
 745                 return -EINVAL;
 746         }
 747         return 0;
 748 }
 749
 750 static int cx18_v4l2_do_ioctl(struct inode *inode, struct file *filp,
 751                               unsigned int cmd, void *arg)
 752 {
 753         struct cx18_open_id *id = (struct cx18_open_id *)filp->private_data;
 754         struct cx18 *cx = id->cx;
 755         int ret;
 756
 757         /* check priority */
 758         switch (cmd) {
 759         case VIDIOC_S_CTRL:
 760         case VIDIOC_S_STD:
 761         case VIDIOC_S_INPUT:
 762         case VIDIOC_S_TUNER:
 763         case VIDIOC_S_FREQUENCY:
 764         case VIDIOC_S_FMT:
 765         case VIDIOC_S_CROP:
 766         case VIDIOC_S_EXT_CTRLS:
 767                 ret = v4l2_prio_check(&cx->prio, &id->prio);
 768                 if (ret)
 769                         return ret;
 770         }
 771
 772         switch (cmd) {
 773         case VIDIOC_DBG_G_REGISTER:
 774         case VIDIOC_DBG_S_REGISTER:
 775         case VIDIOC_G_CHIP_IDENT:
 776         case VIDIOC_INT_S_AUDIO_ROUTING:
 777         case VIDIOC_INT_RESET:
 778                 if (cx18_debug & CX18_DBGFLG_IOCTL) {
 779                         printk(KERN_INFO "cx18%d ioctl: ", cx->num);
 780                         v4l_printk_ioctl(cmd);
 781                 }
 782                 return cx18_debug_ioctls(filp, cmd, arg);
 783
 784         case VIDIOC_G_PRIORITY:
 785         case VIDIOC_S_PRIORITY:
 786         case VIDIOC_QUERYCAP:
 787         case VIDIOC_ENUMINPUT:
 788         case VIDIOC_G_INPUT:
 789         case VIDIOC_S_INPUT:
 790         case VIDIOC_G_FMT:
 791         case VIDIOC_S_FMT:
 792         case VIDIOC_TRY_FMT:
 793         case VIDIOC_ENUM_FMT:
 794         case VIDIOC_CROPCAP:
 795         case VIDIOC_G_CROP:
 796         case VIDIOC_S_CROP:
 797         case VIDIOC_G_FREQUENCY:
 798         case VIDIOC_S_FREQUENCY:
 799         case VIDIOC_ENUMSTD:
 800         case VIDIOC_G_STD:
 801         case VIDIOC_S_STD:
 802         case VIDIOC_S_TUNER:
 803         case VIDIOC_G_TUNER:
 804         case VIDIOC_ENUMAUDIO:
 805         case VIDIOC_S_AUDIO:
 806         case VIDIOC_G_AUDIO:
 807         case VIDIOC_G_SLICED_VBI_CAP:
 808         case VIDIOC_LOG_STATUS:
 809         case VIDIOC_G_ENC_INDEX:
 810         case VIDIOC_ENCODER_CMD:
 811         case VIDIOC_TRY_ENCODER_CMD:
 812                 if (cx18_debug & CX18_DBGFLG_IOCTL) {
 813                         printk(KERN_INFO "cx18%d ioctl: ", cx->num);
 814                         v4l_printk_ioctl(cmd);
 815                 }
 816                 return cx18_v4l2_ioctls(cx, filp, cmd, arg);
 817
 818         case VIDIOC_QUERYMENU:
 819         case VIDIOC_QUERYCTRL:
 820         case VIDIOC_S_CTRL:
 821         case VIDIOC_G_CTRL:
 822         case VIDIOC_S_EXT_CTRLS:
 823         case VIDIOC_G_EXT_CTRLS:
 824         case VIDIOC_TRY_EXT_CTRLS:
 825                 if (cx18_debug & CX18_DBGFLG_IOCTL) {
 826                         printk(KERN_INFO "cx18%d ioctl: ", cx->num);
 827                         v4l_printk_ioctl(cmd);
 828                 }
 829                 return cx18_control_ioctls(cx, cmd, arg);
 830
 831         case 0x00005401:        /* Handle isatty() calls */
 832                 return -EINVAL;
 833         default:
 834                 return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
 835                                                    cx18_v4l2_do_ioctl);
 836         }
 837         return 0;
 838 }
 839
 840 int cx18_v4l2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
 841                     unsigned long arg)
 842 {
 843         struct cx18_open_id *id = (struct cx18_open_id *)filp->private_data;
 844         struct cx18 *cx = id->cx;
 845         int res;
 846
 847         mutex_lock(&cx->serialize_lock);
 848         res = video_usercopy(inode, filp, cmd, arg, cx18_v4l2_do_ioctl);
 849         mutex_unlock(&cx->serialize_lock);
 850         return res;
 851 }