drivers/media/video/em28xx/em28xx-video.c

   1 /*
   2    em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
   3                     video capture devices
   4
   5    Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
   6                       Markus Rechberger <mrechberger@gmail.com>
   7                       Mauro Carvalho Chehab <mchehab@infradead.org>
   8                       Sascha Sommer <saschasommer@freenet.de>
   9
  10         Some parts based on SN9C10x PC Camera Controllers GPL driver made
  11                 by Luca Risolia <luca.risolia@studio.unibo.it>
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 2 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27
  28 #include <linux/init.h>
  29 #include <linux/list.h>
  30 #include <linux/module.h>
  31 #include <linux/kernel.h>
  32 #include <linux/bitmap.h>
  33 #include <linux/usb.h>
  34 #include <linux/i2c.h>
  35 #include <linux/version.h>
  36 #include <linux/mm.h>
  37 #include <linux/mutex.h>
  38
  39 #include "em28xx.h"
  40 #include <media/v4l2-common.h>
  41 #include <media/v4l2-ioctl.h>
  42 #include <media/v4l2-chip-ident.h>
  43 #include <media/msp3400.h>
  44 #include <media/tuner.h>
  45
  46 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
  47                       "Markus Rechberger <mrechberger@gmail.com>, " \
  48                       "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
  49                       "Sascha Sommer <saschasommer@freenet.de>"
  50
  51 #define DRIVER_DESC         "Empia em28xx based USB video device driver"
  52 #define EM28XX_VERSION_CODE  KERNEL_VERSION(0, 1, 2)
  53
  54 #define em28xx_videodbg(fmt, arg...) do {\
  55         if (video_debug) \
  56                 printk(KERN_INFO "%s %s :"fmt, \
  57                          dev->name, __func__ , ##arg); } while (0)
  58
  59 static unsigned int isoc_debug;
  60 module_param(isoc_debug, int, 0644);
  61 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  62
  63 #define em28xx_isocdbg(fmt, arg...) \
  64 do {\
  65         if (isoc_debug) { \
  66                 printk(KERN_INFO "%s %s :"fmt, \
  67                          dev->name, __func__ , ##arg); \
  68         } \
  69   } while (0)
  70
  71 MODULE_AUTHOR(DRIVER_AUTHOR);
  72 MODULE_DESCRIPTION(DRIVER_DESC);
  73 MODULE_LICENSE("GPL");
  74
  75 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  76 static unsigned int vbi_nr[]   = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  77 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  78
  79 module_param_array(video_nr, int, NULL, 0444);
  80 module_param_array(vbi_nr, int, NULL, 0444);
  81 module_param_array(radio_nr, int, NULL, 0444);
  82 MODULE_PARM_DESC(video_nr, "video device numbers");
  83 MODULE_PARM_DESC(vbi_nr,   "vbi device numbers");
  84 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  85
  86 static unsigned int video_debug;
  87 module_param(video_debug, int, 0644);
  88 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  89
  90 /* supported video standards */
  91 static struct em28xx_fmt format[] = {
  92         {
  93                 .name     = "16 bpp YUY2, 4:2:2, packed",
  94                 .fourcc   = V4L2_PIX_FMT_YUYV,
  95                 .depth    = 16,
  96                 .reg      = EM28XX_OUTFMT_YUV422_Y0UY1V,
  97         }, {
  98                 .name     = "16 bpp RGB 565, LE",
  99                 .fourcc   = V4L2_PIX_FMT_RGB565,
 100                 .depth    = 16,
 101                 .reg      = EM28XX_OUTFMT_RGB_16_656,
 102         }, {
 103                 .name     = "8 bpp Bayer BGBG..GRGR",
 104                 .fourcc   = V4L2_PIX_FMT_SBGGR8,
 105                 .depth    = 8,
 106                 .reg      = EM28XX_OUTFMT_RGB_8_BGBG,
 107         }, {
 108                 .name     = "8 bpp Bayer GRGR..BGBG",
 109                 .fourcc   = V4L2_PIX_FMT_SGRBG8,
 110                 .depth    = 8,
 111                 .reg      = EM28XX_OUTFMT_RGB_8_GRGR,
 112         }, {
 113                 .name     = "8 bpp Bayer GBGB..RGRG",
 114                 .fourcc   = V4L2_PIX_FMT_SGBRG8,
 115                 .depth    = 8,
 116                 .reg      = EM28XX_OUTFMT_RGB_8_GBGB,
 117         }, {
 118                 .name     = "12 bpp YUV411",
 119                 .fourcc   = V4L2_PIX_FMT_YUV411P,
 120                 .depth    = 12,
 121                 .reg      = EM28XX_OUTFMT_YUV411,
 122         },
 123 };
 124
 125 /* supported controls */
 126 /* Common to all boards */
 127 static struct v4l2_queryctrl em28xx_qctrl[] = {
 128         {
 129                 .id = V4L2_CID_AUDIO_VOLUME,
 130                 .type = V4L2_CTRL_TYPE_INTEGER,
 131                 .name = "Volume",
 132                 .minimum = 0x0,
 133                 .maximum = 0x1f,
 134                 .step = 0x1,
 135                 .default_value = 0x1f,
 136                 .flags = 0,
 137         }, {
 138                 .id = V4L2_CID_AUDIO_MUTE,
 139                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 140                 .name = "Mute",
 141                 .minimum = 0,
 142                 .maximum = 1,
 143                 .step = 1,
 144                 .default_value = 1,
 145                 .flags = 0,
 146         }
 147 };
 148
 149 /* ------------------------------------------------------------------
 150         DMA and thread functions
 151    ------------------------------------------------------------------*/
 152
 153 /*
 154  * Announces that a buffer were filled and request the next
 155  */
 156 static inline void buffer_filled(struct em28xx *dev,
 157                                   struct em28xx_dmaqueue *dma_q,
 158                                   struct em28xx_buffer *buf)
 159 {
 160         /* Advice that buffer was filled */
 161         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 162         buf->vb.state = VIDEOBUF_DONE;
 163         buf->vb.field_count++;
 164         do_gettimeofday(&buf->vb.ts);
 165
 166         dev->isoc_ctl.buf = NULL;
 167
 168         list_del(&buf->vb.queue);
 169         wake_up(&buf->vb.done);
 170 }
 171
 172 /*
 173  * Identify the buffer header type and properly handles
 174  */
 175 static void em28xx_copy_video(struct em28xx *dev,
 176                               struct em28xx_dmaqueue  *dma_q,
 177                               struct em28xx_buffer *buf,
 178                               unsigned char *p,
 179                               unsigned char *outp, unsigned long len)
 180 {
 181         void *fieldstart, *startwrite, *startread;
 182         int  linesdone, currlinedone, offset, lencopy, remain;
 183         int bytesperline = dev->width << 1;
 184
 185         if (dma_q->pos + len > buf->vb.size)
 186                 len = buf->vb.size - dma_q->pos;
 187
 188         if (p[0] != 0x88 && p[0] != 0x22) {
 189                 em28xx_isocdbg("frame is not complete\n");
 190                 len += 4;
 191         } else
 192                 p += 4;
 193
 194         startread = p;
 195         remain = len;
 196
 197         /* Interlaces frame */
 198         if (buf->top_field)
 199                 fieldstart = outp;
 200         else
 201                 fieldstart = outp + bytesperline;
 202
 203         linesdone = dma_q->pos / bytesperline;
 204         currlinedone = dma_q->pos % bytesperline;
 205         offset = linesdone * bytesperline * 2 + currlinedone;
 206         startwrite = fieldstart + offset;
 207         lencopy = bytesperline - currlinedone;
 208         lencopy = lencopy > remain ? remain : lencopy;
 209
 210         if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
 211                 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 212                                ((char *)startwrite + lencopy) -
 213                                ((char *)outp + buf->vb.size));
 214                 remain = (char *)outp + buf->vb.size - (char *)startwrite;
 215                 lencopy = remain;
 216         }
 217         if (lencopy <= 0)
 218                 return;
 219         memcpy(startwrite, startread, lencopy);
 220
 221         remain -= lencopy;
 222
 223         while (remain > 0) {
 224                 startwrite += lencopy + bytesperline;
 225                 startread += lencopy;
 226                 if (bytesperline > remain)
 227                         lencopy = remain;
 228                 else
 229                         lencopy = bytesperline;
 230
 231                 if ((char *)startwrite + lencopy > (char *)outp +
 232                     buf->vb.size) {
 233                         em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
 234                                        ((char *)startwrite + lencopy) -
 235                                        ((char *)outp + buf->vb.size));
 236                         lencopy = remain = (char *)outp + buf->vb.size -
 237                                            (char *)startwrite;
 238                 }
 239                 if (lencopy <= 0)
 240                         break;
 241
 242                 memcpy(startwrite, startread, lencopy);
 243
 244                 remain -= lencopy;
 245         }
 246
 247         dma_q->pos += len;
 248 }
 249
 250 static inline void print_err_status(struct em28xx *dev,
 251                                      int packet, int status)
 252 {
 253         char *errmsg = "Unknown";
 254
 255         switch (status) {
 256         case -ENOENT:
 257                 errmsg = "unlinked synchronuously";
 258                 break;
 259         case -ECONNRESET:
 260                 errmsg = "unlinked asynchronuously";
 261                 break;
 262         case -ENOSR:
 263                 errmsg = "Buffer error (overrun)";
 264                 break;
 265         case -EPIPE:
 266                 errmsg = "Stalled (device not responding)";
 267                 break;
 268         case -EOVERFLOW:
 269                 errmsg = "Babble (bad cable?)";
 270                 break;
 271         case -EPROTO:
 272                 errmsg = "Bit-stuff error (bad cable?)";
 273                 break;
 274         case -EILSEQ:
 275                 errmsg = "CRC/Timeout (could be anything)";
 276                 break;
 277         case -ETIME:
 278                 errmsg = "Device does not respond";
 279                 break;
 280         }
 281         if (packet < 0) {
 282                 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 283         } else {
 284                 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
 285                                packet, status, errmsg);
 286         }
 287 }
 288
 289 /*
 290  * video-buf generic routine to get the next available buffer
 291  */
 292 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
 293                                           struct em28xx_buffer **buf)
 294 {
 295         struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
 296         char *outp;
 297
 298         if (list_empty(&dma_q->active)) {
 299                 em28xx_isocdbg("No active queue to serve\n");
 300                 dev->isoc_ctl.buf = NULL;
 301                 *buf = NULL;
 302                 return;
 303         }
 304
 305         /* Get the next buffer */
 306         *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
 307
 308         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 309         outp = videobuf_to_vmalloc(&(*buf)->vb);
 310         memset(outp, 0, (*buf)->vb.size);
 311
 312         dev->isoc_ctl.buf = *buf;
 313
 314         return;
 315 }
 316
 317 /*
 318  * Controls the isoc copy of each urb packet
 319  */
 320 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
 321 {
 322         struct em28xx_buffer    *buf;
 323         struct em28xx_dmaqueue  *dma_q = urb->context;
 324         unsigned char *outp = NULL;
 325         int i, len = 0, rc = 1;
 326         unsigned char *p;
 327
 328         if (!dev)
 329                 return 0;
 330
 331         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 332                 return 0;
 333
 334         if (urb->status < 0) {
 335                 print_err_status(dev, -1, urb->status);
 336                 if (urb->status == -ENOENT)
 337                         return 0;
 338         }
 339
 340         buf = dev->isoc_ctl.buf;
 341         if (buf != NULL)
 342                 outp = videobuf_to_vmalloc(&buf->vb);
 343
 344         for (i = 0; i < urb->number_of_packets; i++) {
 345                 int status = urb->iso_frame_desc[i].status;
 346
 347                 if (status < 0) {
 348                         print_err_status(dev, i, status);
 349                         if (urb->iso_frame_desc[i].status != -EPROTO)
 350                                 continue;
 351                 }
 352
 353                 len = urb->iso_frame_desc[i].actual_length - 4;
 354
 355                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 356                         /* em28xx_isocdbg("packet %d is empty",i); - spammy */
 357                         continue;
 358                 }
 359                 if (urb->iso_frame_desc[i].actual_length >
 360                                                 dev->max_pkt_size) {
 361                         em28xx_isocdbg("packet bigger than packet size");
 362                         continue;
 363                 }
 364
 365                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 366
 367                 /* FIXME: incomplete buffer checks where removed to make
 368                    logic simpler. Impacts of those changes should be evaluated
 369                  */
 370                 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
 371                         em28xx_isocdbg("VBI HEADER!!!\n");
 372                         /* FIXME: Should add vbi copy */
 373                         continue;
 374                 }
 375                 if (p[0] == 0x22 && p[1] == 0x5a) {
 376                         em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
 377                                        len, (p[2] & 1) ? "odd" : "even");
 378
 379                         if (!(p[2] & 1)) {
 380                                 if (buf != NULL)
 381                                         buffer_filled(dev, dma_q, buf);
 382                                 get_next_buf(dma_q, &buf);
 383                                 if (buf == NULL)
 384                                         outp = NULL;
 385                                 else
 386                                         outp = videobuf_to_vmalloc(&buf->vb);
 387                         }
 388
 389                         if (buf != NULL) {
 390                                 if (p[2] & 1)
 391                                         buf->top_field = 0;
 392                                 else
 393                                         buf->top_field = 1;
 394                         }
 395
 396                         dma_q->pos = 0;
 397                 }
 398                 if (buf != NULL)
 399                         em28xx_copy_video(dev, dma_q, buf, p, outp, len);
 400         }
 401         return rc;
 402 }
 403
 404 /* ------------------------------------------------------------------
 405         Videobuf operations
 406    ------------------------------------------------------------------*/
 407
 408 static int
 409 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 410 {
 411         struct em28xx_fh *fh = vq->priv_data;
 412         struct em28xx        *dev = fh->dev;
 413         struct v4l2_frequency f;
 414
 415         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
 416
 417         if (0 == *count)
 418                 *count = EM28XX_DEF_BUF;
 419
 420         if (*count < EM28XX_MIN_BUF)
 421                 *count = EM28XX_MIN_BUF;
 422
 423         /* Ask tuner to go to analog or radio mode */
 424         memset(&f, 0, sizeof(f));
 425         f.frequency = dev->ctl_freq;
 426         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 427
 428         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
 429
 430         return 0;
 431 }
 432
 433 /* This is called *without* dev->slock held; please keep it that way */
 434 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
 435 {
 436         struct em28xx_fh     *fh  = vq->priv_data;
 437         struct em28xx        *dev = fh->dev;
 438         unsigned long flags = 0;
 439         if (in_interrupt())
 440                 BUG();
 441
 442         /* We used to wait for the buffer to finish here, but this didn't work
 443            because, as we were keeping the state as VIDEOBUF_QUEUED,
 444            videobuf_queue_cancel marked it as finished for us.
 445            (Also, it could wedge forever if the hardware was misconfigured.)
 446
 447            This should be safe; by the time we get here, the buffer isn't
 448            queued anymore. If we ever start marking the buffers as
 449            VIDEOBUF_ACTIVE, it won't be, though.
 450         */
 451         spin_lock_irqsave(&dev->slock, flags);
 452         if (dev->isoc_ctl.buf == buf)
 453                 dev->isoc_ctl.buf = NULL;
 454         spin_unlock_irqrestore(&dev->slock, flags);
 455
 456         videobuf_vmalloc_free(&buf->vb);
 457         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 458 }
 459
 460 static int
 461 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 462                                                 enum v4l2_field field)
 463 {
 464         struct em28xx_fh     *fh  = vq->priv_data;
 465         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 466         struct em28xx        *dev = fh->dev;
 467         int                  rc = 0, urb_init = 0;
 468
 469         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
 470
 471         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 472                 return -EINVAL;
 473
 474         buf->vb.width  = dev->width;
 475         buf->vb.height = dev->height;
 476         buf->vb.field  = field;
 477
 478         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 479                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 480                 if (rc < 0)
 481                         goto fail;
 482         }
 483
 484         if (!dev->isoc_ctl.num_bufs)
 485                 urb_init = 1;
 486
 487         if (urb_init) {
 488                 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
 489                                       EM28XX_NUM_BUFS, dev->max_pkt_size,
 490                                       em28xx_isoc_copy);
 491                 if (rc < 0)
 492                         goto fail;
 493         }
 494
 495         buf->vb.state = VIDEOBUF_PREPARED;
 496         return 0;
 497
 498 fail:
 499         free_buffer(vq, buf);
 500         return rc;
 501 }
 502
 503 static void
 504 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 505 {
 506         struct em28xx_buffer    *buf     = container_of(vb,
 507                                                         struct em28xx_buffer,
 508                                                         vb);
 509         struct em28xx_fh        *fh      = vq->priv_data;
 510         struct em28xx           *dev     = fh->dev;
 511         struct em28xx_dmaqueue  *vidq    = &dev->vidq;
 512
 513         buf->vb.state = VIDEOBUF_QUEUED;
 514         list_add_tail(&buf->vb.queue, &vidq->active);
 515
 516 }
 517
 518 static void buffer_release(struct videobuf_queue *vq,
 519                                 struct videobuf_buffer *vb)
 520 {
 521         struct em28xx_buffer   *buf  = container_of(vb,
 522                                                     struct em28xx_buffer,
 523                                                     vb);
 524         struct em28xx_fh       *fh   = vq->priv_data;
 525         struct em28xx          *dev  = (struct em28xx *)fh->dev;
 526
 527         em28xx_isocdbg("em28xx: called buffer_release\n");
 528
 529         free_buffer(vq, buf);
 530 }
 531
 532 static struct videobuf_queue_ops em28xx_video_qops = {
 533         .buf_setup      = buffer_setup,
 534         .buf_prepare    = buffer_prepare,
 535         .buf_queue      = buffer_queue,
 536         .buf_release    = buffer_release,
 537 };
 538
 539 /*********************  v4l2 interface  **************************************/
 540
 541 static void video_mux(struct em28xx *dev, int index)
 542 {
 543         dev->ctl_input = index;
 544         dev->ctl_ainput = INPUT(index)->amux;
 545         dev->ctl_aoutput = INPUT(index)->aout;
 546
 547         if (!dev->ctl_aoutput)
 548                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 549
 550         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
 551                         INPUT(index)->vmux, 0, 0);
 552
 553         if (dev->board.has_msp34xx) {
 554                 if (dev->i2s_speed) {
 555                         v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
 556                                 s_i2s_clock_freq, dev->i2s_speed);
 557                 }
 558                 /* Note: this is msp3400 specific */
 559                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 560                          dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
 561         }
 562
 563         if (dev->board.adecoder != EM28XX_NOADECODER) {
 564                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 565                         dev->ctl_ainput, dev->ctl_aoutput, 0);
 566         }
 567
 568         em28xx_audio_analog_set(dev);
 569 }
 570
 571 /* Usage lock check functions */
 572 static int res_get(struct em28xx_fh *fh)
 573 {
 574         struct em28xx    *dev = fh->dev;
 575         int              rc   = 0;
 576
 577         /* This instance already has stream_on */
 578         if (fh->stream_on)
 579                 return rc;
 580
 581         if (dev->stream_on)
 582                 return -EBUSY;
 583
 584         dev->stream_on = 1;
 585         fh->stream_on  = 1;
 586         return rc;
 587 }
 588
 589 static int res_check(struct em28xx_fh *fh)
 590 {
 591         return fh->stream_on;
 592 }
 593
 594 static void res_free(struct em28xx_fh *fh)
 595 {
 596         struct em28xx    *dev = fh->dev;
 597
 598         fh->stream_on = 0;
 599         dev->stream_on = 0;
 600 }
 601
 602 /*
 603  * em28xx_get_ctrl()
 604  * return the current saturation, brightness or contrast, mute state
 605  */
 606 static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
 607 {
 608         switch (ctrl->id) {
 609         case V4L2_CID_AUDIO_MUTE:
 610                 ctrl->value = dev->mute;
 611                 return 0;
 612         case V4L2_CID_AUDIO_VOLUME:
 613                 ctrl->value = dev->volume;
 614                 return 0;
 615         default:
 616                 return -EINVAL;
 617         }
 618 }
 619
 620 /*
 621  * em28xx_set_ctrl()
 622  * mute or set new saturation, brightness or contrast
 623  */
 624 static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
 625 {
 626         switch (ctrl->id) {
 627         case V4L2_CID_AUDIO_MUTE:
 628                 if (ctrl->value != dev->mute) {
 629                         dev->mute = ctrl->value;
 630                         return em28xx_audio_analog_set(dev);
 631                 }
 632                 return 0;
 633         case V4L2_CID_AUDIO_VOLUME:
 634                 dev->volume = ctrl->value;
 635                 return em28xx_audio_analog_set(dev);
 636         default:
 637                 return -EINVAL;
 638         }
 639 }
 640
 641 static int check_dev(struct em28xx *dev)
 642 {
 643         if (dev->state & DEV_DISCONNECTED) {
 644                 em28xx_errdev("v4l2 ioctl: device not present\n");
 645                 return -ENODEV;
 646         }
 647
 648         if (dev->state & DEV_MISCONFIGURED) {
 649                 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
 650                               "close and open it again\n");
 651                 return -EIO;
 652         }
 653         return 0;
 654 }
 655
 656 static void get_scale(struct em28xx *dev,
 657                         unsigned int width, unsigned int height,
 658                         unsigned int *hscale, unsigned int *vscale)
 659 {
 660         unsigned int          maxw   = norm_maxw(dev);
 661         unsigned int          maxh   = norm_maxh(dev);
 662
 663         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 664         if (*hscale >= 0x4000)
 665                 *hscale = 0x3fff;
 666
 667         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 668         if (*vscale >= 0x4000)
 669                 *vscale = 0x3fff;
 670 }
 671
 672 /* ------------------------------------------------------------------
 673         IOCTL vidioc handling
 674    ------------------------------------------------------------------*/
 675
 676 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 677                                         struct v4l2_format *f)
 678 {
 679         struct em28xx_fh      *fh  = priv;
 680         struct em28xx         *dev = fh->dev;
 681
 682         mutex_lock(&dev->lock);
 683
 684         f->fmt.pix.width = dev->width;
 685         f->fmt.pix.height = dev->height;
 686         f->fmt.pix.pixelformat = dev->format->fourcc;
 687         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 688         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
 689         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 690
 691         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
 692         f->fmt.pix.field = dev->interlaced ?
 693                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 694
 695         mutex_unlock(&dev->lock);
 696         return 0;
 697 }
 698
 699 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
 700 {
 701         unsigned int i;
 702
 703         for (i = 0; i < ARRAY_SIZE(format); i++)
 704                 if (format[i].fourcc == fourcc)
 705                         return &format[i];
 706
 707         return NULL;
 708 }
 709
 710 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 711                         struct v4l2_format *f)
 712 {
 713         struct em28xx_fh      *fh    = priv;
 714         struct em28xx         *dev   = fh->dev;
 715         unsigned int          width  = f->fmt.pix.width;
 716         unsigned int          height = f->fmt.pix.height;
 717         unsigned int          maxw   = norm_maxw(dev);
 718         unsigned int          maxh   = norm_maxh(dev);
 719         unsigned int          hscale, vscale;
 720         struct em28xx_fmt     *fmt;
 721
 722         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 723         if (!fmt) {
 724                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
 725                                 f->fmt.pix.pixelformat);
 726                 return -EINVAL;
 727         }
 728
 729         if (dev->board.is_27xx) {
 730                 /* FIXME: This is the only supported fmt */
 731                 width  = 640;
 732                 height = 480;
 733         } else if (dev->board.is_em2800) {
 734                 /* the em2800 can only scale down to 50% */
 735                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
 736                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
 737                 /* According to empiatech support the MaxPacketSize is too small
 738                  * to support framesizes larger than 640x480 @ 30 fps or 640x576
 739                  * @ 25 fps.  As this would cut of a part of the image we prefer
 740                  * 360x576 or 360x480 for now */
 741                 if (width == maxw && height == maxh)
 742                         width /= 2;
 743         } else {
 744                 /* width must even because of the YUYV format
 745                    height must be even because of interlacing */
 746                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 747         }
 748
 749         get_scale(dev, width, height, &hscale, &vscale);
 750
 751         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 752         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 753
 754         f->fmt.pix.width = width;
 755         f->fmt.pix.height = height;
 756         f->fmt.pix.pixelformat = fmt->fourcc;
 757         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 758         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 759         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 760         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 761
 762         return 0;
 763 }
 764
 765 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
 766                                    unsigned width, unsigned height)
 767 {
 768         struct em28xx_fmt     *fmt;
 769
 770         /* FIXME: This is the only supported fmt */
 771         if (dev->board.is_27xx) {
 772                 width  = 640;
 773                 height = 480;
 774         }
 775
 776         fmt = format_by_fourcc(fourcc);
 777         if (!fmt)
 778                 return -EINVAL;
 779
 780         dev->format = fmt;
 781         dev->width  = width;
 782         dev->height = height;
 783
 784         /* set new image size */
 785         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 786
 787         em28xx_set_alternate(dev);
 788         em28xx_resolution_set(dev);
 789
 790         return 0;
 791 }
 792
 793 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 794                         struct v4l2_format *f)
 795 {
 796         struct em28xx_fh      *fh  = priv;
 797         struct em28xx         *dev = fh->dev;
 798         int                   rc;
 799
 800         rc = check_dev(dev);
 801         if (rc < 0)
 802                 return rc;
 803
 804         mutex_lock(&dev->lock);
 805
 806         vidioc_try_fmt_vid_cap(file, priv, f);
 807
 808         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 809                 em28xx_errdev("%s queue busy\n", __func__);
 810                 rc = -EBUSY;
 811                 goto out;
 812         }
 813
 814         if (dev->stream_on && !fh->stream_on) {
 815                 em28xx_errdev("%s device in use by another fh\n", __func__);
 816                 rc = -EBUSY;
 817                 goto out;
 818         }
 819
 820         rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
 821                                 f->fmt.pix.width, f->fmt.pix.height);
 822
 823 out:
 824         mutex_unlock(&dev->lock);
 825         return rc;
 826 }
 827
 828 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
 829 {
 830         struct em28xx_fh   *fh  = priv;
 831         struct em28xx      *dev = fh->dev;
 832         struct v4l2_format f;
 833         int                rc;
 834
 835         rc = check_dev(dev);
 836         if (rc < 0)
 837                 return rc;
 838
 839         mutex_lock(&dev->lock);
 840         dev->norm = *norm;
 841
 842         /* Adjusts width/height, if needed */
 843         f.fmt.pix.width = dev->width;
 844         f.fmt.pix.height = dev->height;
 845         vidioc_try_fmt_vid_cap(file, priv, &f);
 846
 847         /* set new image size */
 848         dev->width = f.fmt.pix.width;
 849         dev->height = f.fmt.pix.height;
 850         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 851
 852         em28xx_resolution_set(dev);
 853         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
 854
 855         mutex_unlock(&dev->lock);
 856         return 0;
 857 }
 858
 859 static const char *iname[] = {
 860         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
 861         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
 862         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
 863         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
 864         [EM28XX_VMUX_SVIDEO]     = "S-Video",
 865         [EM28XX_VMUX_TELEVISION] = "Television",
 866         [EM28XX_VMUX_CABLE]      = "Cable TV",
 867         [EM28XX_VMUX_DVB]        = "DVB",
 868         [EM28XX_VMUX_DEBUG]      = "for debug only",
 869 };
 870
 871 static int vidioc_enum_input(struct file *file, void *priv,
 872                                 struct v4l2_input *i)
 873 {
 874         struct em28xx_fh   *fh  = priv;
 875         struct em28xx      *dev = fh->dev;
 876         unsigned int       n;
 877
 878         n = i->index;
 879         if (n >= MAX_EM28XX_INPUT)
 880                 return -EINVAL;
 881         if (0 == INPUT(n)->type)
 882                 return -EINVAL;
 883
 884         i->index = n;
 885         i->type = V4L2_INPUT_TYPE_CAMERA;
 886
 887         strcpy(i->name, iname[INPUT(n)->type]);
 888
 889         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
 890                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
 891                 i->type = V4L2_INPUT_TYPE_TUNER;
 892
 893         i->std = dev->vdev->tvnorms;
 894
 895         return 0;
 896 }
 897
 898 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 899 {
 900         struct em28xx_fh   *fh  = priv;
 901         struct em28xx      *dev = fh->dev;
 902
 903         *i = dev->ctl_input;
 904
 905         return 0;
 906 }
 907
 908 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
 909 {
 910         struct em28xx_fh   *fh  = priv;
 911         struct em28xx      *dev = fh->dev;
 912         int                rc;
 913
 914         rc = check_dev(dev);
 915         if (rc < 0)
 916                 return rc;
 917
 918         if (i >= MAX_EM28XX_INPUT)
 919                 return -EINVAL;
 920         if (0 == INPUT(i)->type)
 921                 return -EINVAL;
 922
 923         dev->ctl_input = i;
 924
 925         mutex_lock(&dev->lock);
 926         video_mux(dev, dev->ctl_input);
 927         mutex_unlock(&dev->lock);
 928         return 0;
 929 }
 930
 931 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 932 {
 933         struct em28xx_fh   *fh    = priv;
 934         struct em28xx      *dev   = fh->dev;
 935
 936         switch (a->index) {
 937         case EM28XX_AMUX_VIDEO:
 938                 strcpy(a->name, "Television");
 939                 break;
 940         case EM28XX_AMUX_LINE_IN:
 941                 strcpy(a->name, "Line In");
 942                 break;
 943         case EM28XX_AMUX_VIDEO2:
 944                 strcpy(a->name, "Television alt");
 945                 break;
 946         case EM28XX_AMUX_PHONE:
 947                 strcpy(a->name, "Phone");
 948                 break;
 949         case EM28XX_AMUX_MIC:
 950                 strcpy(a->name, "Mic");
 951                 break;
 952         case EM28XX_AMUX_CD:
 953                 strcpy(a->name, "CD");
 954                 break;
 955         case EM28XX_AMUX_AUX:
 956                 strcpy(a->name, "Aux");
 957                 break;
 958         case EM28XX_AMUX_PCM_OUT:
 959                 strcpy(a->name, "PCM");
 960                 break;
 961         default:
 962                 return -EINVAL;
 963         }
 964
 965         a->index = dev->ctl_ainput;
 966         a->capability = V4L2_AUDCAP_STEREO;
 967
 968         return 0;
 969 }
 970
 971 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
 972 {
 973         struct em28xx_fh   *fh  = priv;
 974         struct em28xx      *dev = fh->dev;
 975
 976
 977         if (a->index >= MAX_EM28XX_INPUT)
 978                 return -EINVAL;
 979         if (0 == INPUT(a->index)->type)
 980                 return -EINVAL;
 981
 982         mutex_lock(&dev->lock);
 983
 984         dev->ctl_ainput = INPUT(a->index)->amux;
 985         dev->ctl_aoutput = INPUT(a->index)->aout;
 986
 987         if (!dev->ctl_aoutput)
 988                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 989
 990         mutex_unlock(&dev->lock);
 991         return 0;
 992 }
 993
 994 static int vidioc_queryctrl(struct file *file, void *priv,
 995                                 struct v4l2_queryctrl *qc)
 996 {
 997         struct em28xx_fh      *fh  = priv;
 998         struct em28xx         *dev = fh->dev;
 999         int                   id  = qc->id;
1000         int                   i;
1001         int                   rc;
1002
1003         rc = check_dev(dev);
1004         if (rc < 0)
1005                 return rc;
1006
1007         memset(qc, 0, sizeof(*qc));
1008
1009         qc->id = id;
1010
1011         if (!dev->board.has_msp34xx) {
1012                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1013                         if (qc->id && qc->id == em28xx_qctrl[i].id) {
1014                                 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1015                                 return 0;
1016                         }
1017                 }
1018         }
1019
1020         mutex_lock(&dev->lock);
1021         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1022         mutex_unlock(&dev->lock);
1023
1024         if (qc->type)
1025                 return 0;
1026         else
1027                 return -EINVAL;
1028 }
1029
1030 static int vidioc_g_ctrl(struct file *file, void *priv,
1031                                 struct v4l2_control *ctrl)
1032 {
1033         struct em28xx_fh      *fh  = priv;
1034         struct em28xx         *dev = fh->dev;
1035         int                   rc;
1036
1037         rc = check_dev(dev);
1038         if (rc < 0)
1039                 return rc;
1040         rc = 0;
1041
1042         mutex_lock(&dev->lock);
1043
1044         if (dev->board.has_msp34xx)
1045                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1046         else {
1047                 rc = em28xx_get_ctrl(dev, ctrl);
1048                 if (rc < 0) {
1049                         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1050                         rc = 0;
1051                 }
1052         }
1053
1054         mutex_unlock(&dev->lock);
1055         return rc;
1056 }
1057
1058 static int vidioc_s_ctrl(struct file *file, void *priv,
1059                                 struct v4l2_control *ctrl)
1060 {
1061         struct em28xx_fh      *fh  = priv;
1062         struct em28xx         *dev = fh->dev;
1063         u8                    i;
1064         int                   rc;
1065
1066         rc = check_dev(dev);
1067         if (rc < 0)
1068                 return rc;
1069
1070         mutex_lock(&dev->lock);
1071
1072         if (dev->board.has_msp34xx)
1073                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1074         else {
1075                 rc = 1;
1076                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1077                         if (ctrl->id == em28xx_qctrl[i].id) {
1078                                 if (ctrl->value < em28xx_qctrl[i].minimum ||
1079                                     ctrl->value > em28xx_qctrl[i].maximum) {
1080                                         rc = -ERANGE;
1081                                         break;
1082                                 }
1083
1084                                 rc = em28xx_set_ctrl(dev, ctrl);
1085                                 break;
1086                         }
1087                 }
1088         }
1089
1090         /* Control not found - try to send it to the attached devices */
1091         if (rc == 1) {
1092                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1093                 rc = 0;
1094         }
1095
1096         mutex_unlock(&dev->lock);
1097         return rc;
1098 }
1099
1100 static int vidioc_g_tuner(struct file *file, void *priv,
1101                                 struct v4l2_tuner *t)
1102 {
1103         struct em28xx_fh      *fh  = priv;
1104         struct em28xx         *dev = fh->dev;
1105         int                   rc;
1106
1107         rc = check_dev(dev);
1108         if (rc < 0)
1109                 return rc;
1110
1111         if (0 != t->index)
1112                 return -EINVAL;
1113
1114         strcpy(t->name, "Tuner");
1115
1116         mutex_lock(&dev->lock);
1117         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1118         mutex_unlock(&dev->lock);
1119
1120         return 0;
1121 }
1122
1123 static int vidioc_s_tuner(struct file *file, void *priv,
1124                                 struct v4l2_tuner *t)
1125 {
1126         struct em28xx_fh      *fh  = priv;
1127         struct em28xx         *dev = fh->dev;
1128         int                   rc;
1129
1130         rc = check_dev(dev);
1131         if (rc < 0)
1132                 return rc;
1133
1134         if (0 != t->index)
1135                 return -EINVAL;
1136
1137         mutex_lock(&dev->lock);
1138         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1139         mutex_unlock(&dev->lock);
1140
1141         return 0;
1142 }
1143
1144 static int vidioc_g_frequency(struct file *file, void *priv,
1145                                 struct v4l2_frequency *f)
1146 {
1147         struct em28xx_fh      *fh  = priv;
1148         struct em28xx         *dev = fh->dev;
1149
1150         mutex_lock(&dev->lock);
1151         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1152         f->frequency = dev->ctl_freq;
1153         mutex_unlock(&dev->lock);
1154
1155         return 0;
1156 }
1157
1158 static int vidioc_s_frequency(struct file *file, void *priv,
1159                                 struct v4l2_frequency *f)
1160 {
1161         struct em28xx_fh      *fh  = priv;
1162         struct em28xx         *dev = fh->dev;
1163         int                   rc;
1164
1165         rc = check_dev(dev);
1166         if (rc < 0)
1167                 return rc;
1168
1169         if (0 != f->tuner)
1170                 return -EINVAL;
1171
1172         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1173                 return -EINVAL;
1174         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1175                 return -EINVAL;
1176
1177         mutex_lock(&dev->lock);
1178
1179         dev->ctl_freq = f->frequency;
1180         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1181
1182         mutex_unlock(&dev->lock);
1183
1184         return 0;
1185 }
1186
1187 #ifdef CONFIG_VIDEO_ADV_DEBUG
1188 static int em28xx_reg_len(int reg)
1189 {
1190         switch (reg) {
1191         case EM28XX_R40_AC97LSB:
1192         case EM28XX_R30_HSCALELOW:
1193         case EM28XX_R32_VSCALELOW:
1194                 return 2;
1195         default:
1196                 return 1;
1197         }
1198 }
1199
1200 static int vidioc_g_chip_ident(struct file *file, void *priv,
1201                struct v4l2_dbg_chip_ident *chip)
1202 {
1203         struct em28xx_fh      *fh  = priv;
1204         struct em28xx         *dev = fh->dev;
1205
1206         chip->ident = V4L2_IDENT_NONE;
1207         chip->revision = 0;
1208
1209         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1210
1211         return 0;
1212 }
1213
1214
1215 static int vidioc_g_register(struct file *file, void *priv,
1216                              struct v4l2_dbg_register *reg)
1217 {
1218         struct em28xx_fh      *fh  = priv;
1219         struct em28xx         *dev = fh->dev;
1220         int ret;
1221
1222         switch (reg->match.type) {
1223         case V4L2_CHIP_MATCH_AC97:
1224                 mutex_lock(&dev->lock);
1225                 ret = em28xx_read_ac97(dev, reg->reg);
1226                 mutex_unlock(&dev->lock);
1227                 if (ret < 0)
1228                         return ret;
1229
1230                 reg->val = ret;
1231                 reg->size = 1;
1232                 return 0;
1233         case V4L2_CHIP_MATCH_I2C_DRIVER:
1234                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1235                 return 0;
1236         case V4L2_CHIP_MATCH_I2C_ADDR:
1237                 /* Not supported yet */
1238                 return -EINVAL;
1239         default:
1240                 if (!v4l2_chip_match_host(&reg->match))
1241                         return -EINVAL;
1242         }
1243
1244         /* Match host */
1245         reg->size = em28xx_reg_len(reg->reg);
1246         if (reg->size == 1) {
1247                 mutex_lock(&dev->lock);
1248                 ret = em28xx_read_reg(dev, reg->reg);
1249                 mutex_unlock(&dev->lock);
1250
1251                 if (ret < 0)
1252                         return ret;
1253
1254                 reg->val = ret;
1255         } else {
1256                 __le16 val = 0;
1257                 mutex_lock(&dev->lock);
1258                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1259                                                    reg->reg, (char *)&val, 2);
1260                 mutex_unlock(&dev->lock);
1261                 if (ret < 0)
1262                         return ret;
1263
1264                 reg->val = le16_to_cpu(val);
1265         }
1266
1267         return 0;
1268 }
1269
1270 static int vidioc_s_register(struct file *file, void *priv,
1271                              struct v4l2_dbg_register *reg)
1272 {
1273         struct em28xx_fh      *fh  = priv;
1274         struct em28xx         *dev = fh->dev;
1275         __le16 buf;
1276         int    rc;
1277
1278         switch (reg->match.type) {
1279         case V4L2_CHIP_MATCH_AC97:
1280                 mutex_lock(&dev->lock);
1281                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1282                 mutex_unlock(&dev->lock);
1283
1284                 return rc;
1285         case V4L2_CHIP_MATCH_I2C_DRIVER:
1286                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1287                 return 0;
1288         case V4L2_CHIP_MATCH_I2C_ADDR:
1289                 /* Not supported yet */
1290                 return -EINVAL;
1291         default:
1292                 if (!v4l2_chip_match_host(&reg->match))
1293                         return -EINVAL;
1294         }
1295
1296         /* Match host */
1297         buf = cpu_to_le16(reg->val);
1298
1299         mutex_lock(&dev->lock);
1300         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1301                                em28xx_reg_len(reg->reg));
1302         mutex_unlock(&dev->lock);
1303
1304         return rc;
1305 }
1306 #endif
1307
1308
1309 static int vidioc_cropcap(struct file *file, void *priv,
1310                                         struct v4l2_cropcap *cc)
1311 {
1312         struct em28xx_fh      *fh  = priv;
1313         struct em28xx         *dev = fh->dev;
1314
1315         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1316                 return -EINVAL;
1317
1318         cc->bounds.left = 0;
1319         cc->bounds.top = 0;
1320         cc->bounds.width = dev->width;
1321         cc->bounds.height = dev->height;
1322         cc->defrect = cc->bounds;
1323         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1324         cc->pixelaspect.denominator = 59;
1325
1326         return 0;
1327 }
1328
1329 static int vidioc_streamon(struct file *file, void *priv,
1330                                         enum v4l2_buf_type type)
1331 {
1332         struct em28xx_fh      *fh  = priv;
1333         struct em28xx         *dev = fh->dev;
1334         int                   rc;
1335
1336         rc = check_dev(dev);
1337         if (rc < 0)
1338                 return rc;
1339
1340
1341         mutex_lock(&dev->lock);
1342         rc = res_get(fh);
1343
1344         if (likely(rc >= 0))
1345                 rc = videobuf_streamon(&fh->vb_vidq);
1346
1347         mutex_unlock(&dev->lock);
1348
1349         return rc;
1350 }
1351
1352 static int vidioc_streamoff(struct file *file, void *priv,
1353                                         enum v4l2_buf_type type)
1354 {
1355         struct em28xx_fh      *fh  = priv;
1356         struct em28xx         *dev = fh->dev;
1357         int                   rc;
1358
1359         rc = check_dev(dev);
1360         if (rc < 0)
1361                 return rc;
1362
1363         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1364                 return -EINVAL;
1365         if (type != fh->type)
1366                 return -EINVAL;
1367
1368         mutex_lock(&dev->lock);
1369
1370         videobuf_streamoff(&fh->vb_vidq);
1371         res_free(fh);
1372
1373         mutex_unlock(&dev->lock);
1374
1375         return 0;
1376 }
1377
1378 static int vidioc_querycap(struct file *file, void  *priv,
1379                                         struct v4l2_capability *cap)
1380 {
1381         struct em28xx_fh      *fh  = priv;
1382         struct em28xx         *dev = fh->dev;
1383
1384         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1385         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1386         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1387
1388         cap->version = EM28XX_VERSION_CODE;
1389
1390         cap->capabilities =
1391                         V4L2_CAP_SLICED_VBI_CAPTURE |
1392                         V4L2_CAP_VIDEO_CAPTURE |
1393                         V4L2_CAP_AUDIO |
1394                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1395
1396         if (dev->tuner_type != TUNER_ABSENT)
1397                 cap->capabilities |= V4L2_CAP_TUNER;
1398
1399         return 0;
1400 }
1401
1402 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1403                                         struct v4l2_fmtdesc *f)
1404 {
1405         if (unlikely(f->index >= ARRAY_SIZE(format)))
1406                 return -EINVAL;
1407
1408         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1409         f->pixelformat = format[f->index].fourcc;
1410
1411         return 0;
1412 }
1413
1414 /* Sliced VBI ioctls */
1415 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1416                                         struct v4l2_format *f)
1417 {
1418         struct em28xx_fh      *fh  = priv;
1419         struct em28xx         *dev = fh->dev;
1420         int                   rc;
1421
1422         rc = check_dev(dev);
1423         if (rc < 0)
1424                 return rc;
1425
1426         mutex_lock(&dev->lock);
1427
1428         f->fmt.sliced.service_set = 0;
1429         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1430
1431         if (f->fmt.sliced.service_set == 0)
1432                 rc = -EINVAL;
1433
1434         mutex_unlock(&dev->lock);
1435
1436         return rc;
1437 }
1438
1439 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1440                         struct v4l2_format *f)
1441 {
1442         struct em28xx_fh      *fh  = priv;
1443         struct em28xx         *dev = fh->dev;
1444         int                   rc;
1445
1446         rc = check_dev(dev);
1447         if (rc < 0)
1448                 return rc;
1449
1450         mutex_lock(&dev->lock);
1451         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1452         mutex_unlock(&dev->lock);
1453
1454         if (f->fmt.sliced.service_set == 0)
1455                 return -EINVAL;
1456
1457         return 0;
1458 }
1459
1460
1461 static int vidioc_reqbufs(struct file *file, void *priv,
1462                           struct v4l2_requestbuffers *rb)
1463 {
1464         struct em28xx_fh      *fh  = priv;
1465         struct em28xx         *dev = fh->dev;
1466         int                   rc;
1467
1468         rc = check_dev(dev);
1469         if (rc < 0)
1470                 return rc;
1471
1472         return videobuf_reqbufs(&fh->vb_vidq, rb);
1473 }
1474
1475 static int vidioc_querybuf(struct file *file, void *priv,
1476                            struct v4l2_buffer *b)
1477 {
1478         struct em28xx_fh      *fh  = priv;
1479         struct em28xx         *dev = fh->dev;
1480         int                   rc;
1481
1482         rc = check_dev(dev);
1483         if (rc < 0)
1484                 return rc;
1485
1486         return videobuf_querybuf(&fh->vb_vidq, b);
1487 }
1488
1489 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1490 {
1491         struct em28xx_fh      *fh  = priv;
1492         struct em28xx         *dev = fh->dev;
1493         int                   rc;
1494
1495         rc = check_dev(dev);
1496         if (rc < 0)
1497                 return rc;
1498
1499         return videobuf_qbuf(&fh->vb_vidq, b);
1500 }
1501
1502 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1503 {
1504         struct em28xx_fh      *fh  = priv;
1505         struct em28xx         *dev = fh->dev;
1506         int                   rc;
1507
1508         rc = check_dev(dev);
1509         if (rc < 0)
1510                 return rc;
1511
1512         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1513 }
1514
1515 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1516 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1517 {
1518         struct em28xx_fh  *fh = priv;
1519
1520         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1521 }
1522 #endif
1523
1524
1525 /* ----------------------------------------------------------- */
1526 /* RADIO ESPECIFIC IOCTLS                                      */
1527 /* ----------------------------------------------------------- */
1528
1529 static int radio_querycap(struct file *file, void  *priv,
1530                           struct v4l2_capability *cap)
1531 {
1532         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1533
1534         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1535         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1536         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1537
1538         cap->version = EM28XX_VERSION_CODE;
1539         cap->capabilities = V4L2_CAP_TUNER;
1540         return 0;
1541 }
1542
1543 static int radio_g_tuner(struct file *file, void *priv,
1544                          struct v4l2_tuner *t)
1545 {
1546         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1547
1548         if (unlikely(t->index > 0))
1549                 return -EINVAL;
1550
1551         strcpy(t->name, "Radio");
1552         t->type = V4L2_TUNER_RADIO;
1553
1554         mutex_lock(&dev->lock);
1555         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1556         mutex_unlock(&dev->lock);
1557
1558         return 0;
1559 }
1560
1561 static int radio_enum_input(struct file *file, void *priv,
1562                             struct v4l2_input *i)
1563 {
1564         if (i->index != 0)
1565                 return -EINVAL;
1566         strcpy(i->name, "Radio");
1567         i->type = V4L2_INPUT_TYPE_TUNER;
1568
1569         return 0;
1570 }
1571
1572 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1573 {
1574         if (unlikely(a->index))
1575                 return -EINVAL;
1576
1577         strcpy(a->name, "Radio");
1578         return 0;
1579 }
1580
1581 static int radio_s_tuner(struct file *file, void *priv,
1582                          struct v4l2_tuner *t)
1583 {
1584         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1585
1586         if (0 != t->index)
1587                 return -EINVAL;
1588
1589         mutex_lock(&dev->lock);
1590         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1591         mutex_unlock(&dev->lock);
1592
1593         return 0;
1594 }
1595
1596 static int radio_s_audio(struct file *file, void *fh,
1597                          struct v4l2_audio *a)
1598 {
1599         return 0;
1600 }
1601
1602 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1603 {
1604         return 0;
1605 }
1606
1607 static int radio_queryctrl(struct file *file, void *priv,
1608                            struct v4l2_queryctrl *qc)
1609 {
1610         int i;
1611
1612         if (qc->id <  V4L2_CID_BASE ||
1613                 qc->id >= V4L2_CID_LASTP1)
1614                 return -EINVAL;
1615
1616         for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1617                 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1618                         memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1619                         return 0;
1620                 }
1621         }
1622
1623         return -EINVAL;
1624 }
1625
1626 /*
1627  * em28xx_v4l2_open()
1628  * inits the device and starts isoc transfer
1629  */
1630 static int em28xx_v4l2_open(struct file *filp)
1631 {
1632         int minor = video_devdata(filp)->minor;
1633         int errCode = 0, radio;
1634         struct em28xx *dev;
1635         enum v4l2_buf_type fh_type;
1636         struct em28xx_fh *fh;
1637
1638         dev = em28xx_get_device(minor, &fh_type, &radio);
1639
1640         if (NULL == dev)
1641                 return -ENODEV;
1642
1643         mutex_lock(&dev->lock);
1644
1645         em28xx_videodbg("open minor=%d type=%s users=%d\n",
1646                                 minor, v4l2_type_names[fh_type], dev->users);
1647
1648
1649         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1650         if (!fh) {
1651                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1652                 mutex_unlock(&dev->lock);
1653                 return -ENOMEM;
1654         }
1655         fh->dev = dev;
1656         fh->radio = radio;
1657         fh->type = fh_type;
1658         filp->private_data = fh;
1659
1660         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1661                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1662                 em28xx_set_alternate(dev);
1663                 em28xx_resolution_set(dev);
1664
1665                 /* Needed, since GPIO might have disabled power of
1666                    some i2c device
1667                  */
1668                 em28xx_wake_i2c(dev);
1669
1670         }
1671         if (fh->radio) {
1672                 em28xx_videodbg("video_open: setting radio device\n");
1673                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1674         }
1675
1676         dev->users++;
1677
1678         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1679                         NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
1680                         sizeof(struct em28xx_buffer), fh);
1681
1682         mutex_unlock(&dev->lock);
1683
1684         return errCode;
1685 }
1686
1687 /*
1688  * em28xx_realease_resources()
1689  * unregisters the v4l2,i2c and usb devices
1690  * called when the device gets disconected or at module unload
1691 */
1692 void em28xx_release_analog_resources(struct em28xx *dev)
1693 {
1694
1695         /*FIXME: I2C IR should be disconnected */
1696
1697         if (dev->radio_dev) {
1698                 if (-1 != dev->radio_dev->minor)
1699                         video_unregister_device(dev->radio_dev);
1700                 else
1701                         video_device_release(dev->radio_dev);
1702                 dev->radio_dev = NULL;
1703         }
1704         if (dev->vbi_dev) {
1705                 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1706                             dev->vbi_dev->num);
1707                 if (-1 != dev->vbi_dev->minor)
1708                         video_unregister_device(dev->vbi_dev);
1709                 else
1710                         video_device_release(dev->vbi_dev);
1711                 dev->vbi_dev = NULL;
1712         }
1713         if (dev->vdev) {
1714                 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1715                             dev->vdev->num);
1716                 if (-1 != dev->vdev->minor)
1717                         video_unregister_device(dev->vdev);
1718                 else
1719                         video_device_release(dev->vdev);
1720                 dev->vdev = NULL;
1721         }
1722 }
1723
1724 /*
1725  * em28xx_v4l2_close()
1726  * stops streaming and deallocates all resources allocated by the v4l2
1727  * calls and ioctls
1728  */
1729 static int em28xx_v4l2_close(struct file *filp)
1730 {
1731         struct em28xx_fh *fh  = filp->private_data;
1732         struct em28xx    *dev = fh->dev;
1733         int              errCode;
1734
1735         em28xx_videodbg("users=%d\n", dev->users);
1736
1737
1738         mutex_lock(&dev->lock);
1739         if (res_check(fh))
1740                 res_free(fh);
1741
1742         if (dev->users == 1) {
1743                 videobuf_stop(&fh->vb_vidq);
1744                 videobuf_mmap_free(&fh->vb_vidq);
1745
1746                 /* the device is already disconnect,
1747                    free the remaining resources */
1748                 if (dev->state & DEV_DISCONNECTED) {
1749                         em28xx_release_resources(dev);
1750                         mutex_unlock(&dev->lock);
1751                         kfree(dev);
1752                         return 0;
1753                 }
1754
1755                 /* Save some power by putting tuner to sleep */
1756                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
1757
1758                 /* do this before setting alternate! */
1759                 em28xx_uninit_isoc(dev);
1760                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1761
1762                 /* set alternate 0 */
1763                 dev->alt = 0;
1764                 em28xx_videodbg("setting alternate 0\n");
1765                 errCode = usb_set_interface(dev->udev, 0, 0);
1766                 if (errCode < 0) {
1767                         em28xx_errdev("cannot change alternate number to "
1768                                         "0 (error=%i)\n", errCode);
1769                 }
1770         }
1771         kfree(fh);
1772         dev->users--;
1773         wake_up_interruptible_nr(&dev->open, 1);
1774         mutex_unlock(&dev->lock);
1775         return 0;
1776 }
1777
1778 /*
1779  * em28xx_v4l2_read()
1780  * will allocate buffers when called for the first time
1781  */
1782 static ssize_t
1783 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1784                  loff_t *pos)
1785 {
1786         struct em28xx_fh *fh = filp->private_data;
1787         struct em28xx *dev = fh->dev;
1788         int rc;
1789
1790         rc = check_dev(dev);
1791         if (rc < 0)
1792                 return rc;
1793
1794         /* FIXME: read() is not prepared to allow changing the video
1795            resolution while streaming. Seems a bug at em28xx_set_fmt
1796          */
1797
1798         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1799                 mutex_lock(&dev->lock);
1800                 rc = res_get(fh);
1801                 mutex_unlock(&dev->lock);
1802
1803                 if (unlikely(rc < 0))
1804                         return rc;
1805
1806                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1807                                         filp->f_flags & O_NONBLOCK);
1808         }
1809         return 0;
1810 }
1811
1812 /*
1813  * em28xx_v4l2_poll()
1814  * will allocate buffers when called for the first time
1815  */
1816 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
1817 {
1818         struct em28xx_fh *fh = filp->private_data;
1819         struct em28xx *dev = fh->dev;
1820         int rc;
1821
1822         rc = check_dev(dev);
1823         if (rc < 0)
1824                 return rc;
1825
1826         mutex_lock(&dev->lock);
1827         rc = res_get(fh);
1828         mutex_unlock(&dev->lock);
1829
1830         if (unlikely(rc < 0))
1831                 return POLLERR;
1832
1833         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1834                 return POLLERR;
1835
1836         return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1837 }
1838
1839 /*
1840  * em28xx_v4l2_mmap()
1841  */
1842 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1843 {
1844         struct em28xx_fh *fh    = filp->private_data;
1845         struct em28xx    *dev   = fh->dev;
1846         int              rc;
1847
1848         rc = check_dev(dev);
1849         if (rc < 0)
1850                 return rc;
1851
1852         mutex_lock(&dev->lock);
1853         rc = res_get(fh);
1854         mutex_unlock(&dev->lock);
1855
1856         if (unlikely(rc < 0))
1857                 return rc;
1858
1859         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1860
1861         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1862                 (unsigned long)vma->vm_start,
1863                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1864                 rc);
1865
1866         return rc;
1867 }
1868
1869 static const struct v4l2_file_operations em28xx_v4l_fops = {
1870         .owner         = THIS_MODULE,
1871         .open          = em28xx_v4l2_open,
1872         .release       = em28xx_v4l2_close,
1873         .read          = em28xx_v4l2_read,
1874         .poll          = em28xx_v4l2_poll,
1875         .mmap          = em28xx_v4l2_mmap,
1876         .ioctl         = video_ioctl2,
1877 };
1878
1879 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1880         .vidioc_querycap            = vidioc_querycap,
1881         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1882         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1883         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1884         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1885         .vidioc_g_audio             = vidioc_g_audio,
1886         .vidioc_s_audio             = vidioc_s_audio,
1887         .vidioc_cropcap             = vidioc_cropcap,
1888
1889         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
1890         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1891         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
1892
1893         .vidioc_reqbufs             = vidioc_reqbufs,
1894         .vidioc_querybuf            = vidioc_querybuf,
1895         .vidioc_qbuf                = vidioc_qbuf,
1896         .vidioc_dqbuf               = vidioc_dqbuf,
1897         .vidioc_s_std               = vidioc_s_std,
1898         .vidioc_enum_input          = vidioc_enum_input,
1899         .vidioc_g_input             = vidioc_g_input,
1900         .vidioc_s_input             = vidioc_s_input,
1901         .vidioc_queryctrl           = vidioc_queryctrl,
1902         .vidioc_g_ctrl              = vidioc_g_ctrl,
1903         .vidioc_s_ctrl              = vidioc_s_ctrl,
1904         .vidioc_streamon            = vidioc_streamon,
1905         .vidioc_streamoff           = vidioc_streamoff,
1906         .vidioc_g_tuner             = vidioc_g_tuner,
1907         .vidioc_s_tuner             = vidioc_s_tuner,
1908         .vidioc_g_frequency         = vidioc_g_frequency,
1909         .vidioc_s_frequency         = vidioc_s_frequency,
1910 #ifdef CONFIG_VIDEO_ADV_DEBUG
1911         .vidioc_g_register          = vidioc_g_register,
1912         .vidioc_s_register          = vidioc_s_register,
1913         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
1914 #endif
1915 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1916         .vidiocgmbuf                = vidiocgmbuf,
1917 #endif
1918 };
1919
1920 static const struct video_device em28xx_video_template = {
1921         .fops                       = &em28xx_v4l_fops,
1922         .release                    = video_device_release,
1923         .ioctl_ops                  = &video_ioctl_ops,
1924
1925         .minor                      = -1,
1926
1927         .tvnorms                    = V4L2_STD_ALL,
1928         .current_norm               = V4L2_STD_PAL,
1929 };
1930
1931 static const struct v4l2_file_operations radio_fops = {
1932         .owner         = THIS_MODULE,
1933         .open          = em28xx_v4l2_open,
1934         .release       = em28xx_v4l2_close,
1935         .ioctl         = video_ioctl2,
1936 };
1937
1938 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1939         .vidioc_querycap      = radio_querycap,
1940         .vidioc_g_tuner       = radio_g_tuner,
1941         .vidioc_enum_input    = radio_enum_input,
1942         .vidioc_g_audio       = radio_g_audio,
1943         .vidioc_s_tuner       = radio_s_tuner,
1944         .vidioc_s_audio       = radio_s_audio,
1945         .vidioc_s_input       = radio_s_input,
1946         .vidioc_queryctrl     = radio_queryctrl,
1947         .vidioc_g_ctrl        = vidioc_g_ctrl,
1948         .vidioc_s_ctrl        = vidioc_s_ctrl,
1949         .vidioc_g_frequency   = vidioc_g_frequency,
1950         .vidioc_s_frequency   = vidioc_s_frequency,
1951 #ifdef CONFIG_VIDEO_ADV_DEBUG
1952         .vidioc_g_register    = vidioc_g_register,
1953         .vidioc_s_register    = vidioc_s_register,
1954 #endif
1955 };
1956
1957 static struct video_device em28xx_radio_template = {
1958         .name                 = "em28xx-radio",
1959         .fops                 = &radio_fops,
1960         .ioctl_ops            = &radio_ioctl_ops,
1961         .minor                = -1,
1962 };
1963
1964 /******************************** usb interface ******************************/
1965
1966
1967
1968 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1969                                         const struct video_device *template,
1970                                         const char *type_name)
1971 {
1972         struct video_device *vfd;
1973
1974         vfd = video_device_alloc();
1975         if (NULL == vfd)
1976                 return NULL;
1977
1978         *vfd            = *template;
1979         vfd->minor      = -1;
1980         vfd->v4l2_dev   = &dev->v4l2_dev;
1981         vfd->release    = video_device_release;
1982         vfd->debug      = video_debug;
1983
1984         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1985                  dev->name, type_name);
1986
1987         return vfd;
1988 }
1989
1990 int em28xx_register_analog_devices(struct em28xx *dev)
1991 {
1992       u8 val;
1993         int ret;
1994
1995         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
1996                 dev->name,
1997                 (EM28XX_VERSION_CODE >> 16) & 0xff,
1998                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
1999
2000         /* set default norm */
2001         dev->norm = em28xx_video_template.current_norm;
2002         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2003         dev->ctl_input = 0;
2004
2005         /* Analog specific initialization */
2006         dev->format = &format[0];
2007         em28xx_set_video_format(dev, format[0].fourcc,
2008                                 norm_maxw(dev), norm_maxh(dev));
2009
2010         video_mux(dev, dev->ctl_input);
2011
2012         /* Audio defaults */
2013         dev->mute = 1;
2014         dev->volume = 0x1f;
2015
2016         /* enable vbi capturing */
2017
2018 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2019         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2020         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2021                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
2022         em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
2023
2024         em28xx_set_outfmt(dev);
2025         em28xx_colorlevels_set_default(dev);
2026         em28xx_compression_disable(dev);
2027
2028         /* allocate and fill video video_device struct */
2029         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2030         if (!dev->vdev) {
2031                 em28xx_errdev("cannot allocate video_device.\n");
2032                 return -ENODEV;
2033         }
2034
2035         /* register v4l2 video video_device */
2036         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2037                                        video_nr[dev->devno]);
2038         if (ret) {
2039                 em28xx_errdev("unable to register video device (error=%i).\n",
2040                               ret);
2041                 return ret;
2042         }
2043
2044         /* Allocate and fill vbi video_device struct */
2045         dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2046
2047         /* register v4l2 vbi video_device */
2048         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2049                                         vbi_nr[dev->devno]);
2050         if (ret < 0) {
2051                 em28xx_errdev("unable to register vbi device\n");
2052                 return ret;
2053         }
2054
2055         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2056                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2057                                                   "radio");
2058                 if (!dev->radio_dev) {
2059                         em28xx_errdev("cannot allocate video_device.\n");
2060                         return -ENODEV;
2061                 }
2062                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2063                                             radio_nr[dev->devno]);
2064                 if (ret < 0) {
2065                         em28xx_errdev("can't register radio device\n");
2066                         return ret;
2067                 }
2068                 em28xx_info("Registered radio device as /dev/radio%d\n",
2069                             dev->radio_dev->num);
2070         }
2071
2072         em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2073                                 dev->vdev->num, dev->vbi_dev->num);
2074
2075         return 0;
2076 }