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_em2800) {
 730                 /* the em2800 can only scale down to 50% */
 731                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
 732                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
 733                 /* According to empiatech support the MaxPacketSize is too small
 734                  * to support framesizes larger than 640x480 @ 30 fps or 640x576
 735                  * @ 25 fps.  As this would cut of a part of the image we prefer
 736                  * 360x576 or 360x480 for now */
 737                 if (width == maxw && height == maxh)
 738                         width /= 2;
 739         } else {
 740                 /* width must even because of the YUYV format
 741                    height must be even because of interlacing */
 742                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 743         }
 744
 745         get_scale(dev, width, height, &hscale, &vscale);
 746
 747         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 748         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 749
 750         f->fmt.pix.width = width;
 751         f->fmt.pix.height = height;
 752         f->fmt.pix.pixelformat = fmt->fourcc;
 753         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 754         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 755         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 756         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 757
 758         return 0;
 759 }
 760
 761 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
 762                                    unsigned width, unsigned height)
 763 {
 764         struct em28xx_fmt     *fmt;
 765
 766         fmt = format_by_fourcc(fourcc);
 767         if (!fmt)
 768                 return -EINVAL;
 769
 770         dev->format = fmt;
 771         dev->width  = width;
 772         dev->height = height;
 773
 774         /* set new image size */
 775         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 776
 777         em28xx_set_alternate(dev);
 778         em28xx_resolution_set(dev);
 779
 780         return 0;
 781 }
 782
 783 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 784                         struct v4l2_format *f)
 785 {
 786         struct em28xx_fh      *fh  = priv;
 787         struct em28xx         *dev = fh->dev;
 788         int                   rc;
 789
 790         rc = check_dev(dev);
 791         if (rc < 0)
 792                 return rc;
 793
 794         mutex_lock(&dev->lock);
 795
 796         vidioc_try_fmt_vid_cap(file, priv, f);
 797
 798         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 799                 em28xx_errdev("%s queue busy\n", __func__);
 800                 rc = -EBUSY;
 801                 goto out;
 802         }
 803
 804         if (dev->stream_on && !fh->stream_on) {
 805                 em28xx_errdev("%s device in use by another fh\n", __func__);
 806                 rc = -EBUSY;
 807                 goto out;
 808         }
 809
 810         rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
 811                                 f->fmt.pix.width, f->fmt.pix.height);
 812
 813 out:
 814         mutex_unlock(&dev->lock);
 815         return rc;
 816 }
 817
 818 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
 819 {
 820         struct em28xx_fh   *fh  = priv;
 821         struct em28xx      *dev = fh->dev;
 822         struct v4l2_format f;
 823         int                rc;
 824
 825         rc = check_dev(dev);
 826         if (rc < 0)
 827                 return rc;
 828
 829         mutex_lock(&dev->lock);
 830         dev->norm = *norm;
 831
 832         /* Adjusts width/height, if needed */
 833         f.fmt.pix.width = dev->width;
 834         f.fmt.pix.height = dev->height;
 835         vidioc_try_fmt_vid_cap(file, priv, &f);
 836
 837         /* set new image size */
 838         dev->width = f.fmt.pix.width;
 839         dev->height = f.fmt.pix.height;
 840         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 841
 842         em28xx_resolution_set(dev);
 843         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
 844
 845         mutex_unlock(&dev->lock);
 846         return 0;
 847 }
 848
 849 static const char *iname[] = {
 850         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
 851         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
 852         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
 853         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
 854         [EM28XX_VMUX_SVIDEO]     = "S-Video",
 855         [EM28XX_VMUX_TELEVISION] = "Television",
 856         [EM28XX_VMUX_CABLE]      = "Cable TV",
 857         [EM28XX_VMUX_DVB]        = "DVB",
 858         [EM28XX_VMUX_DEBUG]      = "for debug only",
 859 };
 860
 861 static int vidioc_enum_input(struct file *file, void *priv,
 862                                 struct v4l2_input *i)
 863 {
 864         struct em28xx_fh   *fh  = priv;
 865         struct em28xx      *dev = fh->dev;
 866         unsigned int       n;
 867
 868         n = i->index;
 869         if (n >= MAX_EM28XX_INPUT)
 870                 return -EINVAL;
 871         if (0 == INPUT(n)->type)
 872                 return -EINVAL;
 873
 874         i->index = n;
 875         i->type = V4L2_INPUT_TYPE_CAMERA;
 876
 877         strcpy(i->name, iname[INPUT(n)->type]);
 878
 879         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
 880                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
 881                 i->type = V4L2_INPUT_TYPE_TUNER;
 882
 883         i->std = dev->vdev->tvnorms;
 884
 885         return 0;
 886 }
 887
 888 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 889 {
 890         struct em28xx_fh   *fh  = priv;
 891         struct em28xx      *dev = fh->dev;
 892
 893         *i = dev->ctl_input;
 894
 895         return 0;
 896 }
 897
 898 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
 899 {
 900         struct em28xx_fh   *fh  = priv;
 901         struct em28xx      *dev = fh->dev;
 902         int                rc;
 903
 904         rc = check_dev(dev);
 905         if (rc < 0)
 906                 return rc;
 907
 908         if (i >= MAX_EM28XX_INPUT)
 909                 return -EINVAL;
 910         if (0 == INPUT(i)->type)
 911                 return -EINVAL;
 912
 913         dev->ctl_input = i;
 914
 915         mutex_lock(&dev->lock);
 916         video_mux(dev, dev->ctl_input);
 917         mutex_unlock(&dev->lock);
 918         return 0;
 919 }
 920
 921 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 922 {
 923         struct em28xx_fh   *fh    = priv;
 924         struct em28xx      *dev   = fh->dev;
 925
 926         switch (a->index) {
 927         case EM28XX_AMUX_VIDEO:
 928                 strcpy(a->name, "Television");
 929                 break;
 930         case EM28XX_AMUX_LINE_IN:
 931                 strcpy(a->name, "Line In");
 932                 break;
 933         case EM28XX_AMUX_VIDEO2:
 934                 strcpy(a->name, "Television alt");
 935                 break;
 936         case EM28XX_AMUX_PHONE:
 937                 strcpy(a->name, "Phone");
 938                 break;
 939         case EM28XX_AMUX_MIC:
 940                 strcpy(a->name, "Mic");
 941                 break;
 942         case EM28XX_AMUX_CD:
 943                 strcpy(a->name, "CD");
 944                 break;
 945         case EM28XX_AMUX_AUX:
 946                 strcpy(a->name, "Aux");
 947                 break;
 948         case EM28XX_AMUX_PCM_OUT:
 949                 strcpy(a->name, "PCM");
 950                 break;
 951         default:
 952                 return -EINVAL;
 953         }
 954
 955         a->index = dev->ctl_ainput;
 956         a->capability = V4L2_AUDCAP_STEREO;
 957
 958         return 0;
 959 }
 960
 961 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
 962 {
 963         struct em28xx_fh   *fh  = priv;
 964         struct em28xx      *dev = fh->dev;
 965
 966
 967         if (a->index >= MAX_EM28XX_INPUT)
 968                 return -EINVAL;
 969         if (0 == INPUT(a->index)->type)
 970                 return -EINVAL;
 971
 972         mutex_lock(&dev->lock);
 973
 974         dev->ctl_ainput = INPUT(a->index)->amux;
 975         dev->ctl_aoutput = INPUT(a->index)->aout;
 976
 977         if (!dev->ctl_aoutput)
 978                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 979
 980         mutex_unlock(&dev->lock);
 981         return 0;
 982 }
 983
 984 static int vidioc_queryctrl(struct file *file, void *priv,
 985                                 struct v4l2_queryctrl *qc)
 986 {
 987         struct em28xx_fh      *fh  = priv;
 988         struct em28xx         *dev = fh->dev;
 989         int                   id  = qc->id;
 990         int                   i;
 991         int                   rc;
 992
 993         rc = check_dev(dev);
 994         if (rc < 0)
 995                 return rc;
 996
 997         memset(qc, 0, sizeof(*qc));
 998
 999         qc->id = id;
1000
1001         if (!dev->board.has_msp34xx) {
1002                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1003                         if (qc->id && qc->id == em28xx_qctrl[i].id) {
1004                                 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1005                                 return 0;
1006                         }
1007                 }
1008         }
1009
1010         mutex_lock(&dev->lock);
1011         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1012         mutex_unlock(&dev->lock);
1013
1014         if (qc->type)
1015                 return 0;
1016         else
1017                 return -EINVAL;
1018 }
1019
1020 static int vidioc_g_ctrl(struct file *file, void *priv,
1021                                 struct v4l2_control *ctrl)
1022 {
1023         struct em28xx_fh      *fh  = priv;
1024         struct em28xx         *dev = fh->dev;
1025         int                   rc;
1026
1027         rc = check_dev(dev);
1028         if (rc < 0)
1029                 return rc;
1030         rc = 0;
1031
1032         mutex_lock(&dev->lock);
1033
1034         if (dev->board.has_msp34xx)
1035                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1036         else {
1037                 rc = em28xx_get_ctrl(dev, ctrl);
1038                 if (rc < 0) {
1039                         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1040                         rc = 0;
1041                 }
1042         }
1043
1044         mutex_unlock(&dev->lock);
1045         return rc;
1046 }
1047
1048 static int vidioc_s_ctrl(struct file *file, void *priv,
1049                                 struct v4l2_control *ctrl)
1050 {
1051         struct em28xx_fh      *fh  = priv;
1052         struct em28xx         *dev = fh->dev;
1053         u8                    i;
1054         int                   rc;
1055
1056         rc = check_dev(dev);
1057         if (rc < 0)
1058                 return rc;
1059
1060         mutex_lock(&dev->lock);
1061
1062         if (dev->board.has_msp34xx)
1063                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1064         else {
1065                 rc = 1;
1066                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1067                         if (ctrl->id == em28xx_qctrl[i].id) {
1068                                 if (ctrl->value < em28xx_qctrl[i].minimum ||
1069                                     ctrl->value > em28xx_qctrl[i].maximum) {
1070                                         rc = -ERANGE;
1071                                         break;
1072                                 }
1073
1074                                 rc = em28xx_set_ctrl(dev, ctrl);
1075                                 break;
1076                         }
1077                 }
1078         }
1079
1080         /* Control not found - try to send it to the attached devices */
1081         if (rc == 1) {
1082                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1083                 rc = 0;
1084         }
1085
1086         mutex_unlock(&dev->lock);
1087         return rc;
1088 }
1089
1090 static int vidioc_g_tuner(struct file *file, void *priv,
1091                                 struct v4l2_tuner *t)
1092 {
1093         struct em28xx_fh      *fh  = priv;
1094         struct em28xx         *dev = fh->dev;
1095         int                   rc;
1096
1097         rc = check_dev(dev);
1098         if (rc < 0)
1099                 return rc;
1100
1101         if (0 != t->index)
1102                 return -EINVAL;
1103
1104         strcpy(t->name, "Tuner");
1105
1106         mutex_lock(&dev->lock);
1107         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1108         mutex_unlock(&dev->lock);
1109
1110         return 0;
1111 }
1112
1113 static int vidioc_s_tuner(struct file *file, void *priv,
1114                                 struct v4l2_tuner *t)
1115 {
1116         struct em28xx_fh      *fh  = priv;
1117         struct em28xx         *dev = fh->dev;
1118         int                   rc;
1119
1120         rc = check_dev(dev);
1121         if (rc < 0)
1122                 return rc;
1123
1124         if (0 != t->index)
1125                 return -EINVAL;
1126
1127         mutex_lock(&dev->lock);
1128         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1129         mutex_unlock(&dev->lock);
1130
1131         return 0;
1132 }
1133
1134 static int vidioc_g_frequency(struct file *file, void *priv,
1135                                 struct v4l2_frequency *f)
1136 {
1137         struct em28xx_fh      *fh  = priv;
1138         struct em28xx         *dev = fh->dev;
1139
1140         mutex_lock(&dev->lock);
1141         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1142         f->frequency = dev->ctl_freq;
1143         mutex_unlock(&dev->lock);
1144
1145         return 0;
1146 }
1147
1148 static int vidioc_s_frequency(struct file *file, void *priv,
1149                                 struct v4l2_frequency *f)
1150 {
1151         struct em28xx_fh      *fh  = priv;
1152         struct em28xx         *dev = fh->dev;
1153         int                   rc;
1154
1155         rc = check_dev(dev);
1156         if (rc < 0)
1157                 return rc;
1158
1159         if (0 != f->tuner)
1160                 return -EINVAL;
1161
1162         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1163                 return -EINVAL;
1164         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1165                 return -EINVAL;
1166
1167         mutex_lock(&dev->lock);
1168
1169         dev->ctl_freq = f->frequency;
1170         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1171
1172         mutex_unlock(&dev->lock);
1173
1174         return 0;
1175 }
1176
1177 #ifdef CONFIG_VIDEO_ADV_DEBUG
1178 static int em28xx_reg_len(int reg)
1179 {
1180         switch (reg) {
1181         case EM28XX_R40_AC97LSB:
1182         case EM28XX_R30_HSCALELOW:
1183         case EM28XX_R32_VSCALELOW:
1184                 return 2;
1185         default:
1186                 return 1;
1187         }
1188 }
1189
1190 static int vidioc_g_chip_ident(struct file *file, void *priv,
1191                struct v4l2_dbg_chip_ident *chip)
1192 {
1193         struct em28xx_fh      *fh  = priv;
1194         struct em28xx         *dev = fh->dev;
1195
1196         chip->ident = V4L2_IDENT_NONE;
1197         chip->revision = 0;
1198
1199         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1200
1201         return 0;
1202 }
1203
1204
1205 static int vidioc_g_register(struct file *file, void *priv,
1206                              struct v4l2_dbg_register *reg)
1207 {
1208         struct em28xx_fh      *fh  = priv;
1209         struct em28xx         *dev = fh->dev;
1210         int ret;
1211
1212         switch (reg->match.type) {
1213         case V4L2_CHIP_MATCH_AC97:
1214                 mutex_lock(&dev->lock);
1215                 ret = em28xx_read_ac97(dev, reg->reg);
1216                 mutex_unlock(&dev->lock);
1217                 if (ret < 0)
1218                         return ret;
1219
1220                 reg->val = ret;
1221                 reg->size = 1;
1222                 return 0;
1223         case V4L2_CHIP_MATCH_I2C_DRIVER:
1224                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1225                 return 0;
1226         case V4L2_CHIP_MATCH_I2C_ADDR:
1227                 /* Not supported yet */
1228                 return -EINVAL;
1229         default:
1230                 if (!v4l2_chip_match_host(&reg->match))
1231                         return -EINVAL;
1232         }
1233
1234         /* Match host */
1235         reg->size = em28xx_reg_len(reg->reg);
1236         if (reg->size == 1) {
1237                 mutex_lock(&dev->lock);
1238                 ret = em28xx_read_reg(dev, reg->reg);
1239                 mutex_unlock(&dev->lock);
1240
1241                 if (ret < 0)
1242                         return ret;
1243
1244                 reg->val = ret;
1245         } else {
1246                 __le16 val = 0;
1247                 mutex_lock(&dev->lock);
1248                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1249                                                    reg->reg, (char *)&val, 2);
1250                 mutex_unlock(&dev->lock);
1251                 if (ret < 0)
1252                         return ret;
1253
1254                 reg->val = le16_to_cpu(val);
1255         }
1256
1257         return 0;
1258 }
1259
1260 static int vidioc_s_register(struct file *file, void *priv,
1261                              struct v4l2_dbg_register *reg)
1262 {
1263         struct em28xx_fh      *fh  = priv;
1264         struct em28xx         *dev = fh->dev;
1265         __le16 buf;
1266         int    rc;
1267
1268         switch (reg->match.type) {
1269         case V4L2_CHIP_MATCH_AC97:
1270                 mutex_lock(&dev->lock);
1271                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1272                 mutex_unlock(&dev->lock);
1273
1274                 return rc;
1275         case V4L2_CHIP_MATCH_I2C_DRIVER:
1276                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1277                 return 0;
1278         case V4L2_CHIP_MATCH_I2C_ADDR:
1279                 /* Not supported yet */
1280                 return -EINVAL;
1281         default:
1282                 if (!v4l2_chip_match_host(&reg->match))
1283                         return -EINVAL;
1284         }
1285
1286         /* Match host */
1287         buf = cpu_to_le16(reg->val);
1288
1289         mutex_lock(&dev->lock);
1290         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1291                                em28xx_reg_len(reg->reg));
1292         mutex_unlock(&dev->lock);
1293
1294         return rc;
1295 }
1296 #endif
1297
1298
1299 static int vidioc_cropcap(struct file *file, void *priv,
1300                                         struct v4l2_cropcap *cc)
1301 {
1302         struct em28xx_fh      *fh  = priv;
1303         struct em28xx         *dev = fh->dev;
1304
1305         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1306                 return -EINVAL;
1307
1308         cc->bounds.left = 0;
1309         cc->bounds.top = 0;
1310         cc->bounds.width = dev->width;
1311         cc->bounds.height = dev->height;
1312         cc->defrect = cc->bounds;
1313         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1314         cc->pixelaspect.denominator = 59;
1315
1316         return 0;
1317 }
1318
1319 static int vidioc_streamon(struct file *file, void *priv,
1320                                         enum v4l2_buf_type type)
1321 {
1322         struct em28xx_fh      *fh  = priv;
1323         struct em28xx         *dev = fh->dev;
1324         int                   rc;
1325
1326         rc = check_dev(dev);
1327         if (rc < 0)
1328                 return rc;
1329
1330
1331         mutex_lock(&dev->lock);
1332         rc = res_get(fh);
1333
1334         if (likely(rc >= 0))
1335                 rc = videobuf_streamon(&fh->vb_vidq);
1336
1337         mutex_unlock(&dev->lock);
1338
1339         return rc;
1340 }
1341
1342 static int vidioc_streamoff(struct file *file, void *priv,
1343                                         enum v4l2_buf_type type)
1344 {
1345         struct em28xx_fh      *fh  = priv;
1346         struct em28xx         *dev = fh->dev;
1347         int                   rc;
1348
1349         rc = check_dev(dev);
1350         if (rc < 0)
1351                 return rc;
1352
1353         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1354                 return -EINVAL;
1355         if (type != fh->type)
1356                 return -EINVAL;
1357
1358         mutex_lock(&dev->lock);
1359
1360         videobuf_streamoff(&fh->vb_vidq);
1361         res_free(fh);
1362
1363         mutex_unlock(&dev->lock);
1364
1365         return 0;
1366 }
1367
1368 static int vidioc_querycap(struct file *file, void  *priv,
1369                                         struct v4l2_capability *cap)
1370 {
1371         struct em28xx_fh      *fh  = priv;
1372         struct em28xx         *dev = fh->dev;
1373
1374         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1375         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1376         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1377
1378         cap->version = EM28XX_VERSION_CODE;
1379
1380         cap->capabilities =
1381                         V4L2_CAP_SLICED_VBI_CAPTURE |
1382                         V4L2_CAP_VIDEO_CAPTURE |
1383                         V4L2_CAP_AUDIO |
1384                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1385
1386         if (dev->tuner_type != TUNER_ABSENT)
1387                 cap->capabilities |= V4L2_CAP_TUNER;
1388
1389         return 0;
1390 }
1391
1392 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1393                                         struct v4l2_fmtdesc *f)
1394 {
1395         if (unlikely(f->index >= ARRAY_SIZE(format)))
1396                 return -EINVAL;
1397
1398         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1399         f->pixelformat = format[f->index].fourcc;
1400
1401         return 0;
1402 }
1403
1404 /* Sliced VBI ioctls */
1405 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1406                                         struct v4l2_format *f)
1407 {
1408         struct em28xx_fh      *fh  = priv;
1409         struct em28xx         *dev = fh->dev;
1410         int                   rc;
1411
1412         rc = check_dev(dev);
1413         if (rc < 0)
1414                 return rc;
1415
1416         mutex_lock(&dev->lock);
1417
1418         f->fmt.sliced.service_set = 0;
1419         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1420
1421         if (f->fmt.sliced.service_set == 0)
1422                 rc = -EINVAL;
1423
1424         mutex_unlock(&dev->lock);
1425
1426         return rc;
1427 }
1428
1429 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1430                         struct v4l2_format *f)
1431 {
1432         struct em28xx_fh      *fh  = priv;
1433         struct em28xx         *dev = fh->dev;
1434         int                   rc;
1435
1436         rc = check_dev(dev);
1437         if (rc < 0)
1438                 return rc;
1439
1440         mutex_lock(&dev->lock);
1441         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1442         mutex_unlock(&dev->lock);
1443
1444         if (f->fmt.sliced.service_set == 0)
1445                 return -EINVAL;
1446
1447         return 0;
1448 }
1449
1450
1451 static int vidioc_reqbufs(struct file *file, void *priv,
1452                           struct v4l2_requestbuffers *rb)
1453 {
1454         struct em28xx_fh      *fh  = priv;
1455         struct em28xx         *dev = fh->dev;
1456         int                   rc;
1457
1458         rc = check_dev(dev);
1459         if (rc < 0)
1460                 return rc;
1461
1462         return videobuf_reqbufs(&fh->vb_vidq, rb);
1463 }
1464
1465 static int vidioc_querybuf(struct file *file, void *priv,
1466                            struct v4l2_buffer *b)
1467 {
1468         struct em28xx_fh      *fh  = priv;
1469         struct em28xx         *dev = fh->dev;
1470         int                   rc;
1471
1472         rc = check_dev(dev);
1473         if (rc < 0)
1474                 return rc;
1475
1476         return videobuf_querybuf(&fh->vb_vidq, b);
1477 }
1478
1479 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1480 {
1481         struct em28xx_fh      *fh  = priv;
1482         struct em28xx         *dev = fh->dev;
1483         int                   rc;
1484
1485         rc = check_dev(dev);
1486         if (rc < 0)
1487                 return rc;
1488
1489         return videobuf_qbuf(&fh->vb_vidq, b);
1490 }
1491
1492 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1493 {
1494         struct em28xx_fh      *fh  = priv;
1495         struct em28xx         *dev = fh->dev;
1496         int                   rc;
1497
1498         rc = check_dev(dev);
1499         if (rc < 0)
1500                 return rc;
1501
1502         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1503 }
1504
1505 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1506 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1507 {
1508         struct em28xx_fh  *fh = priv;
1509
1510         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1511 }
1512 #endif
1513
1514
1515 /* ----------------------------------------------------------- */
1516 /* RADIO ESPECIFIC IOCTLS                                      */
1517 /* ----------------------------------------------------------- */
1518
1519 static int radio_querycap(struct file *file, void  *priv,
1520                           struct v4l2_capability *cap)
1521 {
1522         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1523
1524         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1525         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1526         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1527
1528         cap->version = EM28XX_VERSION_CODE;
1529         cap->capabilities = V4L2_CAP_TUNER;
1530         return 0;
1531 }
1532
1533 static int radio_g_tuner(struct file *file, void *priv,
1534                          struct v4l2_tuner *t)
1535 {
1536         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1537
1538         if (unlikely(t->index > 0))
1539                 return -EINVAL;
1540
1541         strcpy(t->name, "Radio");
1542         t->type = V4L2_TUNER_RADIO;
1543
1544         mutex_lock(&dev->lock);
1545         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1546         mutex_unlock(&dev->lock);
1547
1548         return 0;
1549 }
1550
1551 static int radio_enum_input(struct file *file, void *priv,
1552                             struct v4l2_input *i)
1553 {
1554         if (i->index != 0)
1555                 return -EINVAL;
1556         strcpy(i->name, "Radio");
1557         i->type = V4L2_INPUT_TYPE_TUNER;
1558
1559         return 0;
1560 }
1561
1562 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1563 {
1564         if (unlikely(a->index))
1565                 return -EINVAL;
1566
1567         strcpy(a->name, "Radio");
1568         return 0;
1569 }
1570
1571 static int radio_s_tuner(struct file *file, void *priv,
1572                          struct v4l2_tuner *t)
1573 {
1574         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1575
1576         if (0 != t->index)
1577                 return -EINVAL;
1578
1579         mutex_lock(&dev->lock);
1580         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1581         mutex_unlock(&dev->lock);
1582
1583         return 0;
1584 }
1585
1586 static int radio_s_audio(struct file *file, void *fh,
1587                          struct v4l2_audio *a)
1588 {
1589         return 0;
1590 }
1591
1592 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1593 {
1594         return 0;
1595 }
1596
1597 static int radio_queryctrl(struct file *file, void *priv,
1598                            struct v4l2_queryctrl *qc)
1599 {
1600         int i;
1601
1602         if (qc->id <  V4L2_CID_BASE ||
1603                 qc->id >= V4L2_CID_LASTP1)
1604                 return -EINVAL;
1605
1606         for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1607                 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1608                         memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1609                         return 0;
1610                 }
1611         }
1612
1613         return -EINVAL;
1614 }
1615
1616 /*
1617  * em28xx_v4l2_open()
1618  * inits the device and starts isoc transfer
1619  */
1620 static int em28xx_v4l2_open(struct file *filp)
1621 {
1622         int minor = video_devdata(filp)->minor;
1623         int errCode = 0, radio;
1624         struct em28xx *dev;
1625         enum v4l2_buf_type fh_type;
1626         struct em28xx_fh *fh;
1627
1628         dev = em28xx_get_device(minor, &fh_type, &radio);
1629
1630         if (NULL == dev)
1631                 return -ENODEV;
1632
1633         mutex_lock(&dev->lock);
1634
1635         em28xx_videodbg("open minor=%d type=%s users=%d\n",
1636                                 minor, v4l2_type_names[fh_type], dev->users);
1637
1638
1639         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1640         if (!fh) {
1641                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1642                 mutex_unlock(&dev->lock);
1643                 return -ENOMEM;
1644         }
1645         fh->dev = dev;
1646         fh->radio = radio;
1647         fh->type = fh_type;
1648         filp->private_data = fh;
1649
1650         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1651                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1652                 em28xx_set_alternate(dev);
1653                 em28xx_resolution_set(dev);
1654
1655                 /* Needed, since GPIO might have disabled power of
1656                    some i2c device
1657                  */
1658                 em28xx_wake_i2c(dev);
1659
1660         }
1661         if (fh->radio) {
1662                 em28xx_videodbg("video_open: setting radio device\n");
1663                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1664         }
1665
1666         dev->users++;
1667
1668         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1669                         NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
1670                         sizeof(struct em28xx_buffer), fh);
1671
1672         mutex_unlock(&dev->lock);
1673
1674         return errCode;
1675 }
1676
1677 /*
1678  * em28xx_realease_resources()
1679  * unregisters the v4l2,i2c and usb devices
1680  * called when the device gets disconected or at module unload
1681 */
1682 void em28xx_release_analog_resources(struct em28xx *dev)
1683 {
1684
1685         /*FIXME: I2C IR should be disconnected */
1686
1687         if (dev->radio_dev) {
1688                 if (-1 != dev->radio_dev->minor)
1689                         video_unregister_device(dev->radio_dev);
1690                 else
1691                         video_device_release(dev->radio_dev);
1692                 dev->radio_dev = NULL;
1693         }
1694         if (dev->vbi_dev) {
1695                 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1696                             dev->vbi_dev->num);
1697                 if (-1 != dev->vbi_dev->minor)
1698                         video_unregister_device(dev->vbi_dev);
1699                 else
1700                         video_device_release(dev->vbi_dev);
1701                 dev->vbi_dev = NULL;
1702         }
1703         if (dev->vdev) {
1704                 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1705                             dev->vdev->num);
1706                 if (-1 != dev->vdev->minor)
1707                         video_unregister_device(dev->vdev);
1708                 else
1709                         video_device_release(dev->vdev);
1710                 dev->vdev = NULL;
1711         }
1712 }
1713
1714 /*
1715  * em28xx_v4l2_close()
1716  * stops streaming and deallocates all resources allocated by the v4l2
1717  * calls and ioctls
1718  */
1719 static int em28xx_v4l2_close(struct file *filp)
1720 {
1721         struct em28xx_fh *fh  = filp->private_data;
1722         struct em28xx    *dev = fh->dev;
1723         int              errCode;
1724
1725         em28xx_videodbg("users=%d\n", dev->users);
1726
1727
1728         mutex_lock(&dev->lock);
1729         if (res_check(fh))
1730                 res_free(fh);
1731
1732         if (dev->users == 1) {
1733                 videobuf_stop(&fh->vb_vidq);
1734                 videobuf_mmap_free(&fh->vb_vidq);
1735
1736                 /* the device is already disconnect,
1737                    free the remaining resources */
1738                 if (dev->state & DEV_DISCONNECTED) {
1739                         em28xx_release_resources(dev);
1740                         mutex_unlock(&dev->lock);
1741                         kfree(dev);
1742                         return 0;
1743                 }
1744
1745                 /* Save some power by putting tuner to sleep */
1746                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
1747
1748                 /* do this before setting alternate! */
1749                 em28xx_uninit_isoc(dev);
1750                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1751
1752                 /* set alternate 0 */
1753                 dev->alt = 0;
1754                 em28xx_videodbg("setting alternate 0\n");
1755                 errCode = usb_set_interface(dev->udev, 0, 0);
1756                 if (errCode < 0) {
1757                         em28xx_errdev("cannot change alternate number to "
1758                                         "0 (error=%i)\n", errCode);
1759                 }
1760         }
1761         kfree(fh);
1762         dev->users--;
1763         wake_up_interruptible_nr(&dev->open, 1);
1764         mutex_unlock(&dev->lock);
1765         return 0;
1766 }
1767
1768 /*
1769  * em28xx_v4l2_read()
1770  * will allocate buffers when called for the first time
1771  */
1772 static ssize_t
1773 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1774                  loff_t *pos)
1775 {
1776         struct em28xx_fh *fh = filp->private_data;
1777         struct em28xx *dev = fh->dev;
1778         int rc;
1779
1780         rc = check_dev(dev);
1781         if (rc < 0)
1782                 return rc;
1783
1784         /* FIXME: read() is not prepared to allow changing the video
1785            resolution while streaming. Seems a bug at em28xx_set_fmt
1786          */
1787
1788         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1789                 mutex_lock(&dev->lock);
1790                 rc = res_get(fh);
1791                 mutex_unlock(&dev->lock);
1792
1793                 if (unlikely(rc < 0))
1794                         return rc;
1795
1796                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1797                                         filp->f_flags & O_NONBLOCK);
1798         }
1799         return 0;
1800 }
1801
1802 /*
1803  * em28xx_v4l2_poll()
1804  * will allocate buffers when called for the first time
1805  */
1806 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
1807 {
1808         struct em28xx_fh *fh = filp->private_data;
1809         struct em28xx *dev = fh->dev;
1810         int rc;
1811
1812         rc = check_dev(dev);
1813         if (rc < 0)
1814                 return rc;
1815
1816         mutex_lock(&dev->lock);
1817         rc = res_get(fh);
1818         mutex_unlock(&dev->lock);
1819
1820         if (unlikely(rc < 0))
1821                 return POLLERR;
1822
1823         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1824                 return POLLERR;
1825
1826         return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1827 }
1828
1829 /*
1830  * em28xx_v4l2_mmap()
1831  */
1832 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1833 {
1834         struct em28xx_fh *fh    = filp->private_data;
1835         struct em28xx    *dev   = fh->dev;
1836         int              rc;
1837
1838         rc = check_dev(dev);
1839         if (rc < 0)
1840                 return rc;
1841
1842         mutex_lock(&dev->lock);
1843         rc = res_get(fh);
1844         mutex_unlock(&dev->lock);
1845
1846         if (unlikely(rc < 0))
1847                 return rc;
1848
1849         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1850
1851         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1852                 (unsigned long)vma->vm_start,
1853                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1854                 rc);
1855
1856         return rc;
1857 }
1858
1859 static const struct v4l2_file_operations em28xx_v4l_fops = {
1860         .owner         = THIS_MODULE,
1861         .open          = em28xx_v4l2_open,
1862         .release       = em28xx_v4l2_close,
1863         .read          = em28xx_v4l2_read,
1864         .poll          = em28xx_v4l2_poll,
1865         .mmap          = em28xx_v4l2_mmap,
1866         .ioctl         = video_ioctl2,
1867 };
1868
1869 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1870         .vidioc_querycap            = vidioc_querycap,
1871         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1872         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1873         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1874         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1875         .vidioc_g_audio             = vidioc_g_audio,
1876         .vidioc_s_audio             = vidioc_s_audio,
1877         .vidioc_cropcap             = vidioc_cropcap,
1878
1879         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
1880         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1881         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
1882
1883         .vidioc_reqbufs             = vidioc_reqbufs,
1884         .vidioc_querybuf            = vidioc_querybuf,
1885         .vidioc_qbuf                = vidioc_qbuf,
1886         .vidioc_dqbuf               = vidioc_dqbuf,
1887         .vidioc_s_std               = vidioc_s_std,
1888         .vidioc_enum_input          = vidioc_enum_input,
1889         .vidioc_g_input             = vidioc_g_input,
1890         .vidioc_s_input             = vidioc_s_input,
1891         .vidioc_queryctrl           = vidioc_queryctrl,
1892         .vidioc_g_ctrl              = vidioc_g_ctrl,
1893         .vidioc_s_ctrl              = vidioc_s_ctrl,
1894         .vidioc_streamon            = vidioc_streamon,
1895         .vidioc_streamoff           = vidioc_streamoff,
1896         .vidioc_g_tuner             = vidioc_g_tuner,
1897         .vidioc_s_tuner             = vidioc_s_tuner,
1898         .vidioc_g_frequency         = vidioc_g_frequency,
1899         .vidioc_s_frequency         = vidioc_s_frequency,
1900 #ifdef CONFIG_VIDEO_ADV_DEBUG
1901         .vidioc_g_register          = vidioc_g_register,
1902         .vidioc_s_register          = vidioc_s_register,
1903         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
1904 #endif
1905 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1906         .vidiocgmbuf                = vidiocgmbuf,
1907 #endif
1908 };
1909
1910 static const struct video_device em28xx_video_template = {
1911         .fops                       = &em28xx_v4l_fops,
1912         .release                    = video_device_release,
1913         .ioctl_ops                  = &video_ioctl_ops,
1914
1915         .minor                      = -1,
1916
1917         .tvnorms                    = V4L2_STD_ALL,
1918         .current_norm               = V4L2_STD_PAL,
1919 };
1920
1921 static const struct v4l2_file_operations radio_fops = {
1922         .owner         = THIS_MODULE,
1923         .open          = em28xx_v4l2_open,
1924         .release       = em28xx_v4l2_close,
1925         .ioctl         = video_ioctl2,
1926 };
1927
1928 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1929         .vidioc_querycap      = radio_querycap,
1930         .vidioc_g_tuner       = radio_g_tuner,
1931         .vidioc_enum_input    = radio_enum_input,
1932         .vidioc_g_audio       = radio_g_audio,
1933         .vidioc_s_tuner       = radio_s_tuner,
1934         .vidioc_s_audio       = radio_s_audio,
1935         .vidioc_s_input       = radio_s_input,
1936         .vidioc_queryctrl     = radio_queryctrl,
1937         .vidioc_g_ctrl        = vidioc_g_ctrl,
1938         .vidioc_s_ctrl        = vidioc_s_ctrl,
1939         .vidioc_g_frequency   = vidioc_g_frequency,
1940         .vidioc_s_frequency   = vidioc_s_frequency,
1941 #ifdef CONFIG_VIDEO_ADV_DEBUG
1942         .vidioc_g_register    = vidioc_g_register,
1943         .vidioc_s_register    = vidioc_s_register,
1944 #endif
1945 };
1946
1947 static struct video_device em28xx_radio_template = {
1948         .name                 = "em28xx-radio",
1949         .fops                 = &radio_fops,
1950         .ioctl_ops            = &radio_ioctl_ops,
1951         .minor                = -1,
1952 };
1953
1954 /******************************** usb interface ******************************/
1955
1956
1957
1958 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1959                                         const struct video_device *template,
1960                                         const char *type_name)
1961 {
1962         struct video_device *vfd;
1963
1964         vfd = video_device_alloc();
1965         if (NULL == vfd)
1966                 return NULL;
1967
1968         *vfd            = *template;
1969         vfd->minor      = -1;
1970         vfd->v4l2_dev   = &dev->v4l2_dev;
1971         vfd->release    = video_device_release;
1972         vfd->debug      = video_debug;
1973
1974         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1975                  dev->name, type_name);
1976
1977         return vfd;
1978 }
1979
1980 int em28xx_register_analog_devices(struct em28xx *dev)
1981 {
1982       u8 val;
1983         int ret;
1984
1985         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
1986                 dev->name,
1987                 (EM28XX_VERSION_CODE >> 16) & 0xff,
1988                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
1989
1990         /* set default norm */
1991         dev->norm = em28xx_video_template.current_norm;
1992         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1993         dev->ctl_input = 0;
1994
1995         /* Analog specific initialization */
1996         dev->format = &format[0];
1997         em28xx_set_video_format(dev, format[0].fourcc,
1998                                 norm_maxw(dev), norm_maxh(dev));
1999
2000         video_mux(dev, dev->ctl_input);
2001
2002         /* Audio defaults */
2003         dev->mute = 1;
2004         dev->volume = 0x1f;
2005
2006         /* enable vbi capturing */
2007
2008 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2009         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2010         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2011                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
2012         em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
2013
2014         em28xx_set_outfmt(dev);
2015         em28xx_colorlevels_set_default(dev);
2016         em28xx_compression_disable(dev);
2017
2018         /* allocate and fill video video_device struct */
2019         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2020         if (!dev->vdev) {
2021                 em28xx_errdev("cannot allocate video_device.\n");
2022                 return -ENODEV;
2023         }
2024
2025         /* register v4l2 video video_device */
2026         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2027                                        video_nr[dev->devno]);
2028         if (ret) {
2029                 em28xx_errdev("unable to register video device (error=%i).\n",
2030                               ret);
2031                 return ret;
2032         }
2033
2034         /* Allocate and fill vbi video_device struct */
2035         dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2036
2037         /* register v4l2 vbi video_device */
2038         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2039                                         vbi_nr[dev->devno]);
2040         if (ret < 0) {
2041                 em28xx_errdev("unable to register vbi device\n");
2042                 return ret;
2043         }
2044
2045         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2046                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2047                                                   "radio");
2048                 if (!dev->radio_dev) {
2049                         em28xx_errdev("cannot allocate video_device.\n");
2050                         return -ENODEV;
2051                 }
2052                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2053                                             radio_nr[dev->devno]);
2054                 if (ret < 0) {
2055                         em28xx_errdev("can't register radio device\n");
2056                         return ret;
2057                 }
2058                 em28xx_info("Registered radio device as /dev/radio%d\n",
2059                             dev->radio_dev->num);
2060         }
2061
2062         em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2063                                 dev->vdev->num, dev->vbi_dev->num);
2064
2065         return 0;
2066 }