git.oblomov.eu Git - linux-2.6/blob - 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     = "16bpp YUY2, 4:2:2, packed",
  94                 .fourcc   = V4L2_PIX_FMT_YUYV,
  95                 .depth    = 16,
  96                 .reg      = EM28XX_OUTFMT_YUV422_Y0UY1V,
  97         },
  98 };
  99
 100 /* supported controls */
 101 /* Common to all boards */
 102 static struct v4l2_queryctrl em28xx_qctrl[] = {
 103         {
 104                 .id = V4L2_CID_AUDIO_VOLUME,
 105                 .type = V4L2_CTRL_TYPE_INTEGER,
 106                 .name = "Volume",
 107                 .minimum = 0x0,
 108                 .maximum = 0x1f,
 109                 .step = 0x1,
 110                 .default_value = 0x1f,
 111                 .flags = 0,
 112         }, {
 113                 .id = V4L2_CID_AUDIO_MUTE,
 114                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 115                 .name = "Mute",
 116                 .minimum = 0,
 117                 .maximum = 1,
 118                 .step = 1,
 119                 .default_value = 1,
 120                 .flags = 0,
 121         }
 122 };
 123
 124 /* ------------------------------------------------------------------
 125         DMA and thread functions
 126    ------------------------------------------------------------------*/
 127
 128 /*
 129  * Announces that a buffer were filled and request the next
 130  */
 131 static inline void buffer_filled(struct em28xx *dev,
 132                                   struct em28xx_dmaqueue *dma_q,
 133                                   struct em28xx_buffer *buf)
 134 {
 135         /* Advice that buffer was filled */
 136         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 137         buf->vb.state = VIDEOBUF_DONE;
 138         buf->vb.field_count++;
 139         do_gettimeofday(&buf->vb.ts);
 140
 141         dev->isoc_ctl.buf = NULL;
 142
 143         list_del(&buf->vb.queue);
 144         wake_up(&buf->vb.done);
 145 }
 146
 147 /*
 148  * Identify the buffer header type and properly handles
 149  */
 150 static void em28xx_copy_video(struct em28xx *dev,
 151                               struct em28xx_dmaqueue  *dma_q,
 152                               struct em28xx_buffer *buf,
 153                               unsigned char *p,
 154                               unsigned char *outp, unsigned long len)
 155 {
 156         void *fieldstart, *startwrite, *startread;
 157         int  linesdone, currlinedone, offset, lencopy, remain;
 158         int bytesperline = dev->width << 1;
 159
 160         if (dma_q->pos + len > buf->vb.size)
 161                 len = buf->vb.size - dma_q->pos;
 162
 163         if (p[0] != 0x88 && p[0] != 0x22) {
 164                 em28xx_isocdbg("frame is not complete\n");
 165                 len += 4;
 166         } else
 167                 p += 4;
 168
 169         startread = p;
 170         remain = len;
 171
 172         /* Interlaces frame */
 173         if (buf->top_field)
 174                 fieldstart = outp;
 175         else
 176                 fieldstart = outp + bytesperline;
 177
 178         linesdone = dma_q->pos / bytesperline;
 179         currlinedone = dma_q->pos % bytesperline;
 180         offset = linesdone * bytesperline * 2 + currlinedone;
 181         startwrite = fieldstart + offset;
 182         lencopy = bytesperline - currlinedone;
 183         lencopy = lencopy > remain ? remain : lencopy;
 184
 185         if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
 186                 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 187                                ((char *)startwrite + lencopy) -
 188                                ((char *)outp + buf->vb.size));
 189                 remain = (char *)outp + buf->vb.size - (char *)startwrite;
 190                 lencopy = remain;
 191         }
 192         if (lencopy <= 0)
 193                 return;
 194         memcpy(startwrite, startread, lencopy);
 195
 196         remain -= lencopy;
 197
 198         while (remain > 0) {
 199                 startwrite += lencopy + bytesperline;
 200                 startread += lencopy;
 201                 if (bytesperline > remain)
 202                         lencopy = remain;
 203                 else
 204                         lencopy = bytesperline;
 205
 206                 if ((char *)startwrite + lencopy > (char *)outp +
 207                     buf->vb.size) {
 208                         em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
 209                                        ((char *)startwrite + lencopy) -
 210                                        ((char *)outp + buf->vb.size));
 211                         lencopy = remain = (char *)outp + buf->vb.size -
 212                                            (char *)startwrite;
 213                 }
 214                 if (lencopy <= 0)
 215                         break;
 216
 217                 memcpy(startwrite, startread, lencopy);
 218
 219                 remain -= lencopy;
 220         }
 221
 222         dma_q->pos += len;
 223 }
 224
 225 static inline void print_err_status(struct em28xx *dev,
 226                                      int packet, int status)
 227 {
 228         char *errmsg = "Unknown";
 229
 230         switch (status) {
 231         case -ENOENT:
 232                 errmsg = "unlinked synchronuously";
 233                 break;
 234         case -ECONNRESET:
 235                 errmsg = "unlinked asynchronuously";
 236                 break;
 237         case -ENOSR:
 238                 errmsg = "Buffer error (overrun)";
 239                 break;
 240         case -EPIPE:
 241                 errmsg = "Stalled (device not responding)";
 242                 break;
 243         case -EOVERFLOW:
 244                 errmsg = "Babble (bad cable?)";
 245                 break;
 246         case -EPROTO:
 247                 errmsg = "Bit-stuff error (bad cable?)";
 248                 break;
 249         case -EILSEQ:
 250                 errmsg = "CRC/Timeout (could be anything)";
 251                 break;
 252         case -ETIME:
 253                 errmsg = "Device does not respond";
 254                 break;
 255         }
 256         if (packet < 0) {
 257                 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 258         } else {
 259                 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
 260                                packet, status, errmsg);
 261         }
 262 }
 263
 264 /*
 265  * video-buf generic routine to get the next available buffer
 266  */
 267 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
 268                                           struct em28xx_buffer **buf)
 269 {
 270         struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
 271         char *outp;
 272
 273         if (list_empty(&dma_q->active)) {
 274                 em28xx_isocdbg("No active queue to serve\n");
 275                 dev->isoc_ctl.buf = NULL;
 276                 *buf = NULL;
 277                 return;
 278         }
 279
 280         /* Get the next buffer */
 281         *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
 282
 283         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 284         outp = videobuf_to_vmalloc(&(*buf)->vb);
 285         memset(outp, 0, (*buf)->vb.size);
 286
 287         dev->isoc_ctl.buf = *buf;
 288
 289         return;
 290 }
 291
 292 /*
 293  * Controls the isoc copy of each urb packet
 294  */
 295 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
 296 {
 297         struct em28xx_buffer    *buf;
 298         struct em28xx_dmaqueue  *dma_q = urb->context;
 299         unsigned char *outp = NULL;
 300         int i, len = 0, rc = 1;
 301         unsigned char *p;
 302
 303         if (!dev)
 304                 return 0;
 305
 306         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 307                 return 0;
 308
 309         if (urb->status < 0) {
 310                 print_err_status(dev, -1, urb->status);
 311                 if (urb->status == -ENOENT)
 312                         return 0;
 313         }
 314
 315         buf = dev->isoc_ctl.buf;
 316         if (buf != NULL)
 317                 outp = videobuf_to_vmalloc(&buf->vb);
 318
 319         for (i = 0; i < urb->number_of_packets; i++) {
 320                 int status = urb->iso_frame_desc[i].status;
 321
 322                 if (status < 0) {
 323                         print_err_status(dev, i, status);
 324                         if (urb->iso_frame_desc[i].status != -EPROTO)
 325                                 continue;
 326                 }
 327
 328                 len = urb->iso_frame_desc[i].actual_length - 4;
 329
 330                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 331                         /* em28xx_isocdbg("packet %d is empty",i); - spammy */
 332                         continue;
 333                 }
 334                 if (urb->iso_frame_desc[i].actual_length >
 335                                                 dev->max_pkt_size) {
 336                         em28xx_isocdbg("packet bigger than packet size");
 337                         continue;
 338                 }
 339
 340                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 341
 342                 /* FIXME: incomplete buffer checks where removed to make
 343                    logic simpler. Impacts of those changes should be evaluated
 344                  */
 345                 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
 346                         em28xx_isocdbg("VBI HEADER!!!\n");
 347                         /* FIXME: Should add vbi copy */
 348                         continue;
 349                 }
 350                 if (p[0] == 0x22 && p[1] == 0x5a) {
 351                         em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
 352                                        len, (p[2] & 1) ? "odd" : "even");
 353
 354                         if (!(p[2] & 1)) {
 355                                 if (buf != NULL)
 356                                         buffer_filled(dev, dma_q, buf);
 357                                 get_next_buf(dma_q, &buf);
 358                                 if (buf == NULL)
 359                                         outp = NULL;
 360                                 else
 361                                         outp = videobuf_to_vmalloc(&buf->vb);
 362                         }
 363
 364                         if (buf != NULL) {
 365                                 if (p[2] & 1)
 366                                         buf->top_field = 0;
 367                                 else
 368                                         buf->top_field = 1;
 369                         }
 370
 371                         dma_q->pos = 0;
 372                 }
 373                 if (buf != NULL)
 374                         em28xx_copy_video(dev, dma_q, buf, p, outp, len);
 375         }
 376         return rc;
 377 }
 378
 379 /* ------------------------------------------------------------------
 380         Videobuf operations
 381    ------------------------------------------------------------------*/
 382
 383 static int
 384 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 385 {
 386         struct em28xx_fh *fh = vq->priv_data;
 387         struct em28xx        *dev = fh->dev;
 388         struct v4l2_frequency f;
 389
 390         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
 391
 392         if (0 == *count)
 393                 *count = EM28XX_DEF_BUF;
 394
 395         if (*count < EM28XX_MIN_BUF)
 396                 *count = EM28XX_MIN_BUF;
 397
 398         /* Ask tuner to go to analog or radio mode */
 399         memset(&f, 0, sizeof(f));
 400         f.frequency = dev->ctl_freq;
 401         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 402
 403         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
 404
 405         return 0;
 406 }
 407
 408 /* This is called *without* dev->slock held; please keep it that way */
 409 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
 410 {
 411         struct em28xx_fh     *fh  = vq->priv_data;
 412         struct em28xx        *dev = fh->dev;
 413         unsigned long flags = 0;
 414         if (in_interrupt())
 415                 BUG();
 416
 417         /* We used to wait for the buffer to finish here, but this didn't work
 418            because, as we were keeping the state as VIDEOBUF_QUEUED,
 419            videobuf_queue_cancel marked it as finished for us.
 420            (Also, it could wedge forever if the hardware was misconfigured.)
 421
 422            This should be safe; by the time we get here, the buffer isn't
 423            queued anymore. If we ever start marking the buffers as
 424            VIDEOBUF_ACTIVE, it won't be, though.
 425         */
 426         spin_lock_irqsave(&dev->slock, flags);
 427         if (dev->isoc_ctl.buf == buf)
 428                 dev->isoc_ctl.buf = NULL;
 429         spin_unlock_irqrestore(&dev->slock, flags);
 430
 431         videobuf_vmalloc_free(&buf->vb);
 432         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 433 }
 434
 435 static int
 436 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 437                                                 enum v4l2_field field)
 438 {
 439         struct em28xx_fh     *fh  = vq->priv_data;
 440         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 441         struct em28xx        *dev = fh->dev;
 442         int                  rc = 0, urb_init = 0;
 443
 444         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
 445
 446         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 447                 return -EINVAL;
 448
 449         buf->vb.width  = dev->width;
 450         buf->vb.height = dev->height;
 451         buf->vb.field  = field;
 452
 453         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 454                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 455                 if (rc < 0)
 456                         goto fail;
 457         }
 458
 459         if (!dev->isoc_ctl.num_bufs)
 460                 urb_init = 1;
 461
 462         if (urb_init) {
 463                 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
 464                                       EM28XX_NUM_BUFS, dev->max_pkt_size,
 465                                       em28xx_isoc_copy);
 466                 if (rc < 0)
 467                         goto fail;
 468         }
 469
 470         buf->vb.state = VIDEOBUF_PREPARED;
 471         return 0;
 472
 473 fail:
 474         free_buffer(vq, buf);
 475         return rc;
 476 }
 477
 478 static void
 479 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 480 {
 481         struct em28xx_buffer    *buf     = container_of(vb,
 482                                                         struct em28xx_buffer,
 483                                                         vb);
 484         struct em28xx_fh        *fh      = vq->priv_data;
 485         struct em28xx           *dev     = fh->dev;
 486         struct em28xx_dmaqueue  *vidq    = &dev->vidq;
 487
 488         buf->vb.state = VIDEOBUF_QUEUED;
 489         list_add_tail(&buf->vb.queue, &vidq->active);
 490
 491 }
 492
 493 static void buffer_release(struct videobuf_queue *vq,
 494                                 struct videobuf_buffer *vb)
 495 {
 496         struct em28xx_buffer   *buf  = container_of(vb,
 497                                                     struct em28xx_buffer,
 498                                                     vb);
 499         struct em28xx_fh       *fh   = vq->priv_data;
 500         struct em28xx          *dev  = (struct em28xx *)fh->dev;
 501
 502         em28xx_isocdbg("em28xx: called buffer_release\n");
 503
 504         free_buffer(vq, buf);
 505 }
 506
 507 static struct videobuf_queue_ops em28xx_video_qops = {
 508         .buf_setup      = buffer_setup,
 509         .buf_prepare    = buffer_prepare,
 510         .buf_queue      = buffer_queue,
 511         .buf_release    = buffer_release,
 512 };
 513
 514 /*********************  v4l2 interface  **************************************/
 515
 516 static void video_mux(struct em28xx *dev, int index)
 517 {
 518         dev->ctl_input = index;
 519         dev->ctl_ainput = INPUT(index)->amux;
 520         dev->ctl_aoutput = INPUT(index)->aout;
 521
 522         if (!dev->ctl_aoutput)
 523                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 524
 525         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
 526                         INPUT(index)->vmux, 0, 0);
 527
 528         if (dev->board.has_msp34xx) {
 529                 if (dev->i2s_speed) {
 530                         v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
 531                                 s_i2s_clock_freq, dev->i2s_speed);
 532                 }
 533                 /* Note: this is msp3400 specific */
 534                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 535                          dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
 536         }
 537
 538         if (dev->board.adecoder != EM28XX_NOADECODER) {
 539                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 540                         dev->ctl_ainput, dev->ctl_aoutput, 0);
 541         }
 542
 543         em28xx_audio_analog_set(dev);
 544 }
 545
 546 /* Usage lock check functions */
 547 static int res_get(struct em28xx_fh *fh)
 548 {
 549         struct em28xx    *dev = fh->dev;
 550         int              rc   = 0;
 551
 552         /* This instance already has stream_on */
 553         if (fh->stream_on)
 554                 return rc;
 555
 556         if (dev->stream_on)
 557                 return -EBUSY;
 558
 559         dev->stream_on = 1;
 560         fh->stream_on  = 1;
 561         return rc;
 562 }
 563
 564 static int res_check(struct em28xx_fh *fh)
 565 {
 566         return fh->stream_on;
 567 }
 568
 569 static void res_free(struct em28xx_fh *fh)
 570 {
 571         struct em28xx    *dev = fh->dev;
 572
 573         fh->stream_on = 0;
 574         dev->stream_on = 0;
 575 }
 576
 577 /*
 578  * em28xx_get_ctrl()
 579  * return the current saturation, brightness or contrast, mute state
 580  */
 581 static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
 582 {
 583         switch (ctrl->id) {
 584         case V4L2_CID_AUDIO_MUTE:
 585                 ctrl->value = dev->mute;
 586                 return 0;
 587         case V4L2_CID_AUDIO_VOLUME:
 588                 ctrl->value = dev->volume;
 589                 return 0;
 590         default:
 591                 return -EINVAL;
 592         }
 593 }
 594
 595 /*
 596  * em28xx_set_ctrl()
 597  * mute or set new saturation, brightness or contrast
 598  */
 599 static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
 600 {
 601         switch (ctrl->id) {
 602         case V4L2_CID_AUDIO_MUTE:
 603                 if (ctrl->value != dev->mute) {
 604                         dev->mute = ctrl->value;
 605                         return em28xx_audio_analog_set(dev);
 606                 }
 607                 return 0;
 608         case V4L2_CID_AUDIO_VOLUME:
 609                 dev->volume = ctrl->value;
 610                 return em28xx_audio_analog_set(dev);
 611         default:
 612                 return -EINVAL;
 613         }
 614 }
 615
 616 static int check_dev(struct em28xx *dev)
 617 {
 618         if (dev->state & DEV_DISCONNECTED) {
 619                 em28xx_errdev("v4l2 ioctl: device not present\n");
 620                 return -ENODEV;
 621         }
 622
 623         if (dev->state & DEV_MISCONFIGURED) {
 624                 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
 625                               "close and open it again\n");
 626                 return -EIO;
 627         }
 628         return 0;
 629 }
 630
 631 static void get_scale(struct em28xx *dev,
 632                         unsigned int width, unsigned int height,
 633                         unsigned int *hscale, unsigned int *vscale)
 634 {
 635         unsigned int          maxw   = norm_maxw(dev);
 636         unsigned int          maxh   = norm_maxh(dev);
 637
 638         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 639         if (*hscale >= 0x4000)
 640                 *hscale = 0x3fff;
 641
 642         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 643         if (*vscale >= 0x4000)
 644                 *vscale = 0x3fff;
 645 }
 646
 647 /* ------------------------------------------------------------------
 648         IOCTL vidioc handling
 649    ------------------------------------------------------------------*/
 650
 651 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 652                                         struct v4l2_format *f)
 653 {
 654         struct em28xx_fh      *fh  = priv;
 655         struct em28xx         *dev = fh->dev;
 656
 657         mutex_lock(&dev->lock);
 658
 659         f->fmt.pix.width = dev->width;
 660         f->fmt.pix.height = dev->height;
 661         f->fmt.pix.pixelformat = dev->format->fourcc;
 662         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 663         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
 664         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 665
 666         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
 667         f->fmt.pix.field = dev->interlaced ?
 668                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 669
 670         mutex_unlock(&dev->lock);
 671         return 0;
 672 }
 673
 674 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
 675 {
 676         unsigned int i;
 677
 678         for (i = 0; i < ARRAY_SIZE(format); i++)
 679                 if (format[i].fourcc == fourcc)
 680                         return &format[i];
 681
 682         return NULL;
 683 }
 684
 685 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 686                         struct v4l2_format *f)
 687 {
 688         struct em28xx_fh      *fh    = priv;
 689         struct em28xx         *dev   = fh->dev;
 690         unsigned int          width  = f->fmt.pix.width;
 691         unsigned int          height = f->fmt.pix.height;
 692         unsigned int          maxw   = norm_maxw(dev);
 693         unsigned int          maxh   = norm_maxh(dev);
 694         unsigned int          hscale, vscale;
 695         struct em28xx_fmt     *fmt;
 696
 697         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 698         if (!fmt) {
 699                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
 700                                 f->fmt.pix.pixelformat);
 701                 return -EINVAL;
 702         }
 703
 704         if (dev->board.is_em2800) {
 705                 /* the em2800 can only scale down to 50% */
 706                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
 707                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
 708                 /* According to empiatech support the MaxPacketSize is too small
 709                  * to support framesizes larger than 640x480 @ 30 fps or 640x576
 710                  * @ 25 fps.  As this would cut of a part of the image we prefer
 711                  * 360x576 or 360x480 for now */
 712                 if (width == maxw && height == maxh)
 713                         width /= 2;
 714         } else {
 715                 /* width must even because of the YUYV format
 716                    height must be even because of interlacing */
 717                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 718         }
 719
 720         get_scale(dev, width, height, &hscale, &vscale);
 721
 722         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 723         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 724
 725         f->fmt.pix.width = width;
 726         f->fmt.pix.height = height;
 727         f->fmt.pix.pixelformat = fmt->fourcc;
 728         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 729         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 730         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 731         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 732
 733         return 0;
 734 }
 735
 736 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 737                         struct v4l2_format *f)
 738 {
 739         struct em28xx_fh      *fh  = priv;
 740         struct em28xx         *dev = fh->dev;
 741         int                   rc;
 742         struct em28xx_fmt     *fmt;
 743
 744         rc = check_dev(dev);
 745         if (rc < 0)
 746                 return rc;
 747
 748         mutex_lock(&dev->lock);
 749
 750         vidioc_try_fmt_vid_cap(file, priv, f);
 751
 752         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 753         if (!fmt) {
 754                 rc = -EINVAL;
 755                 goto out;
 756         }
 757
 758         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 759                 em28xx_errdev("%s queue busy\n", __func__);
 760                 rc = -EBUSY;
 761                 goto out;
 762         }
 763
 764         if (dev->stream_on && !fh->stream_on) {
 765                 em28xx_errdev("%s device in use by another fh\n", __func__);
 766                 rc = -EBUSY;
 767                 goto out;
 768         }
 769
 770         /* set new image size */
 771         dev->width = f->fmt.pix.width;
 772         dev->height = f->fmt.pix.height;
 773         dev->format = fmt;
 774         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 775
 776         em28xx_set_alternate(dev);
 777         em28xx_resolution_set(dev);
 778
 779         rc = 0;
 780
 781 out:
 782         mutex_unlock(&dev->lock);
 783         return rc;
 784 }
 785
 786 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
 787 {
 788         struct em28xx_fh   *fh  = priv;
 789         struct em28xx      *dev = fh->dev;
 790         struct v4l2_format f;
 791         int                rc;
 792
 793         rc = check_dev(dev);
 794         if (rc < 0)
 795                 return rc;
 796
 797         mutex_lock(&dev->lock);
 798         dev->norm = *norm;
 799
 800         /* Adjusts width/height, if needed */
 801         f.fmt.pix.width = dev->width;
 802         f.fmt.pix.height = dev->height;
 803         vidioc_try_fmt_vid_cap(file, priv, &f);
 804
 805         /* set new image size */
 806         dev->width = f.fmt.pix.width;
 807         dev->height = f.fmt.pix.height;
 808         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 809
 810         em28xx_resolution_set(dev);
 811         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
 812
 813         mutex_unlock(&dev->lock);
 814         return 0;
 815 }
 816
 817 static const char *iname[] = {
 818         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
 819         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
 820         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
 821         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
 822         [EM28XX_VMUX_SVIDEO]     = "S-Video",
 823         [EM28XX_VMUX_TELEVISION] = "Television",
 824         [EM28XX_VMUX_CABLE]      = "Cable TV",
 825         [EM28XX_VMUX_DVB]        = "DVB",
 826         [EM28XX_VMUX_DEBUG]      = "for debug only",
 827 };
 828
 829 static int vidioc_enum_input(struct file *file, void *priv,
 830                                 struct v4l2_input *i)
 831 {
 832         struct em28xx_fh   *fh  = priv;
 833         struct em28xx      *dev = fh->dev;
 834         unsigned int       n;
 835
 836         n = i->index;
 837         if (n >= MAX_EM28XX_INPUT)
 838                 return -EINVAL;
 839         if (0 == INPUT(n)->type)
 840                 return -EINVAL;
 841
 842         i->index = n;
 843         i->type = V4L2_INPUT_TYPE_CAMERA;
 844
 845         strcpy(i->name, iname[INPUT(n)->type]);
 846
 847         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
 848                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
 849                 i->type = V4L2_INPUT_TYPE_TUNER;
 850
 851         i->std = dev->vdev->tvnorms;
 852
 853         return 0;
 854 }
 855
 856 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 857 {
 858         struct em28xx_fh   *fh  = priv;
 859         struct em28xx      *dev = fh->dev;
 860
 861         *i = dev->ctl_input;
 862
 863         return 0;
 864 }
 865
 866 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
 867 {
 868         struct em28xx_fh   *fh  = priv;
 869         struct em28xx      *dev = fh->dev;
 870         int                rc;
 871
 872         rc = check_dev(dev);
 873         if (rc < 0)
 874                 return rc;
 875
 876         if (i >= MAX_EM28XX_INPUT)
 877                 return -EINVAL;
 878         if (0 == INPUT(i)->type)
 879                 return -EINVAL;
 880
 881         dev->ctl_input = i;
 882
 883         mutex_lock(&dev->lock);
 884         video_mux(dev, dev->ctl_input);
 885         mutex_unlock(&dev->lock);
 886         return 0;
 887 }
 888
 889 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 890 {
 891         struct em28xx_fh   *fh    = priv;
 892         struct em28xx      *dev   = fh->dev;
 893
 894         switch (a->index) {
 895         case EM28XX_AMUX_VIDEO:
 896                 strcpy(a->name, "Television");
 897                 break;
 898         case EM28XX_AMUX_LINE_IN:
 899                 strcpy(a->name, "Line In");
 900                 break;
 901         case EM28XX_AMUX_VIDEO2:
 902                 strcpy(a->name, "Television alt");
 903                 break;
 904         case EM28XX_AMUX_PHONE:
 905                 strcpy(a->name, "Phone");
 906                 break;
 907         case EM28XX_AMUX_MIC:
 908                 strcpy(a->name, "Mic");
 909                 break;
 910         case EM28XX_AMUX_CD:
 911                 strcpy(a->name, "CD");
 912                 break;
 913         case EM28XX_AMUX_AUX:
 914                 strcpy(a->name, "Aux");
 915                 break;
 916         case EM28XX_AMUX_PCM_OUT:
 917                 strcpy(a->name, "PCM");
 918                 break;
 919         default:
 920                 return -EINVAL;
 921         }
 922
 923         a->index = dev->ctl_ainput;
 924         a->capability = V4L2_AUDCAP_STEREO;
 925
 926         return 0;
 927 }
 928
 929 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
 930 {
 931         struct em28xx_fh   *fh  = priv;
 932         struct em28xx      *dev = fh->dev;
 933
 934
 935         if (a->index >= MAX_EM28XX_INPUT)
 936                 return -EINVAL;
 937         if (0 == INPUT(a->index)->type)
 938                 return -EINVAL;
 939
 940         mutex_lock(&dev->lock);
 941
 942         dev->ctl_ainput = INPUT(a->index)->amux;
 943         dev->ctl_aoutput = INPUT(a->index)->aout;
 944
 945         if (!dev->ctl_aoutput)
 946                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 947
 948         mutex_unlock(&dev->lock);
 949         return 0;
 950 }
 951
 952 static int vidioc_queryctrl(struct file *file, void *priv,
 953                                 struct v4l2_queryctrl *qc)
 954 {
 955         struct em28xx_fh      *fh  = priv;
 956         struct em28xx         *dev = fh->dev;
 957         int                   id  = qc->id;
 958         int                   i;
 959         int                   rc;
 960
 961         rc = check_dev(dev);
 962         if (rc < 0)
 963                 return rc;
 964
 965         memset(qc, 0, sizeof(*qc));
 966
 967         qc->id = id;
 968
 969         if (!dev->board.has_msp34xx) {
 970                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
 971                         if (qc->id && qc->id == em28xx_qctrl[i].id) {
 972                                 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
 973                                 return 0;
 974                         }
 975                 }
 976         }
 977
 978         mutex_lock(&dev->lock);
 979         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
 980         mutex_unlock(&dev->lock);
 981
 982         if (qc->type)
 983                 return 0;
 984         else
 985                 return -EINVAL;
 986 }
 987
 988 static int vidioc_g_ctrl(struct file *file, void *priv,
 989                                 struct v4l2_control *ctrl)
 990 {
 991         struct em28xx_fh      *fh  = priv;
 992         struct em28xx         *dev = fh->dev;
 993         int                   rc;
 994
 995         rc = check_dev(dev);
 996         if (rc < 0)
 997                 return rc;
 998         rc = 0;
 999
1000         mutex_lock(&dev->lock);
1001
1002         if (dev->board.has_msp34xx)
1003                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1004         else {
1005                 rc = em28xx_get_ctrl(dev, ctrl);
1006                 if (rc < 0) {
1007                         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1008                         rc = 0;
1009                 }
1010         }
1011
1012         mutex_unlock(&dev->lock);
1013         return rc;
1014 }
1015
1016 static int vidioc_s_ctrl(struct file *file, void *priv,
1017                                 struct v4l2_control *ctrl)
1018 {
1019         struct em28xx_fh      *fh  = priv;
1020         struct em28xx         *dev = fh->dev;
1021         u8                    i;
1022         int                   rc;
1023
1024         rc = check_dev(dev);
1025         if (rc < 0)
1026                 return rc;
1027
1028         mutex_lock(&dev->lock);
1029
1030         if (dev->board.has_msp34xx)
1031                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1032         else {
1033                 rc = 1;
1034                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1035                         if (ctrl->id == em28xx_qctrl[i].id) {
1036                                 if (ctrl->value < em28xx_qctrl[i].minimum ||
1037                                     ctrl->value > em28xx_qctrl[i].maximum) {
1038                                         rc = -ERANGE;
1039                                         break;
1040                                 }
1041
1042                                 rc = em28xx_set_ctrl(dev, ctrl);
1043                                 break;
1044                         }
1045                 }
1046         }
1047
1048         /* Control not found - try to send it to the attached devices */
1049         if (rc == 1) {
1050                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1051                 rc = 0;
1052         }
1053
1054         mutex_unlock(&dev->lock);
1055         return rc;
1056 }
1057
1058 static int vidioc_g_tuner(struct file *file, void *priv,
1059                                 struct v4l2_tuner *t)
1060 {
1061         struct em28xx_fh      *fh  = priv;
1062         struct em28xx         *dev = fh->dev;
1063         int                   rc;
1064
1065         rc = check_dev(dev);
1066         if (rc < 0)
1067                 return rc;
1068
1069         if (0 != t->index)
1070                 return -EINVAL;
1071
1072         strcpy(t->name, "Tuner");
1073
1074         mutex_lock(&dev->lock);
1075         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1076         mutex_unlock(&dev->lock);
1077
1078         return 0;
1079 }
1080
1081 static int vidioc_s_tuner(struct file *file, void *priv,
1082                                 struct v4l2_tuner *t)
1083 {
1084         struct em28xx_fh      *fh  = priv;
1085         struct em28xx         *dev = fh->dev;
1086         int                   rc;
1087
1088         rc = check_dev(dev);
1089         if (rc < 0)
1090                 return rc;
1091
1092         if (0 != t->index)
1093                 return -EINVAL;
1094
1095         mutex_lock(&dev->lock);
1096         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1097         mutex_unlock(&dev->lock);
1098
1099         return 0;
1100 }
1101
1102 static int vidioc_g_frequency(struct file *file, void *priv,
1103                                 struct v4l2_frequency *f)
1104 {
1105         struct em28xx_fh      *fh  = priv;
1106         struct em28xx         *dev = fh->dev;
1107
1108         mutex_lock(&dev->lock);
1109         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1110         f->frequency = dev->ctl_freq;
1111         mutex_unlock(&dev->lock);
1112
1113         return 0;
1114 }
1115
1116 static int vidioc_s_frequency(struct file *file, void *priv,
1117                                 struct v4l2_frequency *f)
1118 {
1119         struct em28xx_fh      *fh  = priv;
1120         struct em28xx         *dev = fh->dev;
1121         int                   rc;
1122
1123         rc = check_dev(dev);
1124         if (rc < 0)
1125                 return rc;
1126
1127         if (0 != f->tuner)
1128                 return -EINVAL;
1129
1130         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1131                 return -EINVAL;
1132         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1133                 return -EINVAL;
1134
1135         mutex_lock(&dev->lock);
1136
1137         dev->ctl_freq = f->frequency;
1138         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1139
1140         mutex_unlock(&dev->lock);
1141
1142         return 0;
1143 }
1144
1145 #ifdef CONFIG_VIDEO_ADV_DEBUG
1146 static int em28xx_reg_len(int reg)
1147 {
1148         switch (reg) {
1149         case EM28XX_R40_AC97LSB:
1150         case EM28XX_R30_HSCALELOW:
1151         case EM28XX_R32_VSCALELOW:
1152                 return 2;
1153         default:
1154                 return 1;
1155         }
1156 }
1157
1158 static int vidioc_g_chip_ident(struct file *file, void *priv,
1159                struct v4l2_dbg_chip_ident *chip)
1160 {
1161         struct em28xx_fh      *fh  = priv;
1162         struct em28xx         *dev = fh->dev;
1163
1164         chip->ident = V4L2_IDENT_NONE;
1165         chip->revision = 0;
1166
1167         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1168
1169         return 0;
1170 }
1171
1172
1173 static int vidioc_g_register(struct file *file, void *priv,
1174                              struct v4l2_dbg_register *reg)
1175 {
1176         struct em28xx_fh      *fh  = priv;
1177         struct em28xx         *dev = fh->dev;
1178         int ret;
1179
1180         switch (reg->match.type) {
1181         case V4L2_CHIP_MATCH_AC97:
1182                 mutex_lock(&dev->lock);
1183                 ret = em28xx_read_ac97(dev, reg->reg);
1184                 mutex_unlock(&dev->lock);
1185                 if (ret < 0)
1186                         return ret;
1187
1188                 reg->val = ret;
1189                 reg->size = 1;
1190                 return 0;
1191         case V4L2_CHIP_MATCH_I2C_DRIVER:
1192                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1193                 return 0;
1194         case V4L2_CHIP_MATCH_I2C_ADDR:
1195                 /* Not supported yet */
1196                 return -EINVAL;
1197         default:
1198                 if (!v4l2_chip_match_host(&reg->match))
1199                         return -EINVAL;
1200         }
1201
1202         /* Match host */
1203         reg->size = em28xx_reg_len(reg->reg);
1204         if (reg->size == 1) {
1205                 mutex_lock(&dev->lock);
1206                 ret = em28xx_read_reg(dev, reg->reg);
1207                 mutex_unlock(&dev->lock);
1208
1209                 if (ret < 0)
1210                         return ret;
1211
1212                 reg->val = ret;
1213         } else {
1214                 __le16 val = 0;
1215                 mutex_lock(&dev->lock);
1216                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1217                                                    reg->reg, (char *)&val, 2);
1218                 mutex_unlock(&dev->lock);
1219                 if (ret < 0)
1220                         return ret;
1221
1222                 reg->val = le16_to_cpu(val);
1223         }
1224
1225         return 0;
1226 }
1227
1228 static int vidioc_s_register(struct file *file, void *priv,
1229                              struct v4l2_dbg_register *reg)
1230 {
1231         struct em28xx_fh      *fh  = priv;
1232         struct em28xx         *dev = fh->dev;
1233         __le16 buf;
1234         int    rc;
1235
1236         switch (reg->match.type) {
1237         case V4L2_CHIP_MATCH_AC97:
1238                 mutex_lock(&dev->lock);
1239                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1240                 mutex_unlock(&dev->lock);
1241
1242                 return rc;
1243         case V4L2_CHIP_MATCH_I2C_DRIVER:
1244                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1245                 return 0;
1246         case V4L2_CHIP_MATCH_I2C_ADDR:
1247                 /* Not supported yet */
1248                 return -EINVAL;
1249         default:
1250                 if (!v4l2_chip_match_host(&reg->match))
1251                         return -EINVAL;
1252         }
1253
1254         /* Match host */
1255         buf = cpu_to_le16(reg->val);
1256
1257         mutex_lock(&dev->lock);
1258         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1259                                em28xx_reg_len(reg->reg));
1260         mutex_unlock(&dev->lock);
1261
1262         return rc;
1263 }
1264 #endif
1265
1266
1267 static int vidioc_cropcap(struct file *file, void *priv,
1268                                         struct v4l2_cropcap *cc)
1269 {
1270         struct em28xx_fh      *fh  = priv;
1271         struct em28xx         *dev = fh->dev;
1272
1273         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1274                 return -EINVAL;
1275
1276         cc->bounds.left = 0;
1277         cc->bounds.top = 0;
1278         cc->bounds.width = dev->width;
1279         cc->bounds.height = dev->height;
1280         cc->defrect = cc->bounds;
1281         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1282         cc->pixelaspect.denominator = 59;
1283
1284         return 0;
1285 }
1286
1287 static int vidioc_streamon(struct file *file, void *priv,
1288                                         enum v4l2_buf_type type)
1289 {
1290         struct em28xx_fh      *fh  = priv;
1291         struct em28xx         *dev = fh->dev;
1292         int                   rc;
1293
1294         rc = check_dev(dev);
1295         if (rc < 0)
1296                 return rc;
1297
1298
1299         mutex_lock(&dev->lock);
1300         rc = res_get(fh);
1301
1302         if (likely(rc >= 0))
1303                 rc = videobuf_streamon(&fh->vb_vidq);
1304
1305         mutex_unlock(&dev->lock);
1306
1307         return rc;
1308 }
1309
1310 static int vidioc_streamoff(struct file *file, void *priv,
1311                                         enum v4l2_buf_type type)
1312 {
1313         struct em28xx_fh      *fh  = priv;
1314         struct em28xx         *dev = fh->dev;
1315         int                   rc;
1316
1317         rc = check_dev(dev);
1318         if (rc < 0)
1319                 return rc;
1320
1321         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1322                 return -EINVAL;
1323         if (type != fh->type)
1324                 return -EINVAL;
1325
1326         mutex_lock(&dev->lock);
1327
1328         videobuf_streamoff(&fh->vb_vidq);
1329         res_free(fh);
1330
1331         mutex_unlock(&dev->lock);
1332
1333         return 0;
1334 }
1335
1336 static int vidioc_querycap(struct file *file, void  *priv,
1337                                         struct v4l2_capability *cap)
1338 {
1339         struct em28xx_fh      *fh  = priv;
1340         struct em28xx         *dev = fh->dev;
1341
1342         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1343         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1344         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1345
1346         cap->version = EM28XX_VERSION_CODE;
1347
1348         cap->capabilities =
1349                         V4L2_CAP_SLICED_VBI_CAPTURE |
1350                         V4L2_CAP_VIDEO_CAPTURE |
1351                         V4L2_CAP_AUDIO |
1352                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1353
1354         if (dev->tuner_type != TUNER_ABSENT)
1355                 cap->capabilities |= V4L2_CAP_TUNER;
1356
1357         return 0;
1358 }
1359
1360 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1361                                         struct v4l2_fmtdesc *f)
1362 {
1363         if (unlikely(f->index >= ARRAY_SIZE(format)))
1364                 return -EINVAL;
1365
1366         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1367         f->pixelformat = format[f->index].fourcc;
1368
1369         return 0;
1370 }
1371
1372 /* Sliced VBI ioctls */
1373 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1374                                         struct v4l2_format *f)
1375 {
1376         struct em28xx_fh      *fh  = priv;
1377         struct em28xx         *dev = fh->dev;
1378         int                   rc;
1379
1380         rc = check_dev(dev);
1381         if (rc < 0)
1382                 return rc;
1383
1384         mutex_lock(&dev->lock);
1385
1386         f->fmt.sliced.service_set = 0;
1387         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1388
1389         if (f->fmt.sliced.service_set == 0)
1390                 rc = -EINVAL;
1391
1392         mutex_unlock(&dev->lock);
1393
1394         return rc;
1395 }
1396
1397 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1398                         struct v4l2_format *f)
1399 {
1400         struct em28xx_fh      *fh  = priv;
1401         struct em28xx         *dev = fh->dev;
1402         int                   rc;
1403
1404         rc = check_dev(dev);
1405         if (rc < 0)
1406                 return rc;
1407
1408         mutex_lock(&dev->lock);
1409         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1410         mutex_unlock(&dev->lock);
1411
1412         if (f->fmt.sliced.service_set == 0)
1413                 return -EINVAL;
1414
1415         return 0;
1416 }
1417
1418
1419 static int vidioc_reqbufs(struct file *file, void *priv,
1420                           struct v4l2_requestbuffers *rb)
1421 {
1422         struct em28xx_fh      *fh  = priv;
1423         struct em28xx         *dev = fh->dev;
1424         int                   rc;
1425
1426         rc = check_dev(dev);
1427         if (rc < 0)
1428                 return rc;
1429
1430         return videobuf_reqbufs(&fh->vb_vidq, rb);
1431 }
1432
1433 static int vidioc_querybuf(struct file *file, void *priv,
1434                            struct v4l2_buffer *b)
1435 {
1436         struct em28xx_fh      *fh  = priv;
1437         struct em28xx         *dev = fh->dev;
1438         int                   rc;
1439
1440         rc = check_dev(dev);
1441         if (rc < 0)
1442                 return rc;
1443
1444         return videobuf_querybuf(&fh->vb_vidq, b);
1445 }
1446
1447 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1448 {
1449         struct em28xx_fh      *fh  = priv;
1450         struct em28xx         *dev = fh->dev;
1451         int                   rc;
1452
1453         rc = check_dev(dev);
1454         if (rc < 0)
1455                 return rc;
1456
1457         return videobuf_qbuf(&fh->vb_vidq, b);
1458 }
1459
1460 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1461 {
1462         struct em28xx_fh      *fh  = priv;
1463         struct em28xx         *dev = fh->dev;
1464         int                   rc;
1465
1466         rc = check_dev(dev);
1467         if (rc < 0)
1468                 return rc;
1469
1470         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1471 }
1472
1473 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1474 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1475 {
1476         struct em28xx_fh  *fh = priv;
1477
1478         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1479 }
1480 #endif
1481
1482
1483 /* ----------------------------------------------------------- */
1484 /* RADIO ESPECIFIC IOCTLS                                      */
1485 /* ----------------------------------------------------------- */
1486
1487 static int radio_querycap(struct file *file, void  *priv,
1488                           struct v4l2_capability *cap)
1489 {
1490         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1491
1492         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1493         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1494         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1495
1496         cap->version = EM28XX_VERSION_CODE;
1497         cap->capabilities = V4L2_CAP_TUNER;
1498         return 0;
1499 }
1500
1501 static int radio_g_tuner(struct file *file, void *priv,
1502                          struct v4l2_tuner *t)
1503 {
1504         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1505
1506         if (unlikely(t->index > 0))
1507                 return -EINVAL;
1508
1509         strcpy(t->name, "Radio");
1510         t->type = V4L2_TUNER_RADIO;
1511
1512         mutex_lock(&dev->lock);
1513         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1514         mutex_unlock(&dev->lock);
1515
1516         return 0;
1517 }
1518
1519 static int radio_enum_input(struct file *file, void *priv,
1520                             struct v4l2_input *i)
1521 {
1522         if (i->index != 0)
1523                 return -EINVAL;
1524         strcpy(i->name, "Radio");
1525         i->type = V4L2_INPUT_TYPE_TUNER;
1526
1527         return 0;
1528 }
1529
1530 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1531 {
1532         if (unlikely(a->index))
1533                 return -EINVAL;
1534
1535         strcpy(a->name, "Radio");
1536         return 0;
1537 }
1538
1539 static int radio_s_tuner(struct file *file, void *priv,
1540                          struct v4l2_tuner *t)
1541 {
1542         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1543
1544         if (0 != t->index)
1545                 return -EINVAL;
1546
1547         mutex_lock(&dev->lock);
1548         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1549         mutex_unlock(&dev->lock);
1550
1551         return 0;
1552 }
1553
1554 static int radio_s_audio(struct file *file, void *fh,
1555                          struct v4l2_audio *a)
1556 {
1557         return 0;
1558 }
1559
1560 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1561 {
1562         return 0;
1563 }
1564
1565 static int radio_queryctrl(struct file *file, void *priv,
1566                            struct v4l2_queryctrl *qc)
1567 {
1568         int i;
1569
1570         if (qc->id <  V4L2_CID_BASE ||
1571                 qc->id >= V4L2_CID_LASTP1)
1572                 return -EINVAL;
1573
1574         for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1575                 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1576                         memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1577                         return 0;
1578                 }
1579         }
1580
1581         return -EINVAL;
1582 }
1583
1584 /*
1585  * em28xx_v4l2_open()
1586  * inits the device and starts isoc transfer
1587  */
1588 static int em28xx_v4l2_open(struct file *filp)
1589 {
1590         int minor = video_devdata(filp)->minor;
1591         int errCode = 0, radio;
1592         struct em28xx *dev;
1593         enum v4l2_buf_type fh_type;
1594         struct em28xx_fh *fh;
1595
1596         dev = em28xx_get_device(minor, &fh_type, &radio);
1597
1598         if (NULL == dev)
1599                 return -ENODEV;
1600
1601         mutex_lock(&dev->lock);
1602
1603         em28xx_videodbg("open minor=%d type=%s users=%d\n",
1604                                 minor, v4l2_type_names[fh_type], dev->users);
1605
1606
1607         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1608         if (!fh) {
1609                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1610                 mutex_unlock(&dev->lock);
1611                 return -ENOMEM;
1612         }
1613         fh->dev = dev;
1614         fh->radio = radio;
1615         fh->type = fh_type;
1616         filp->private_data = fh;
1617
1618         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1619                 dev->width = norm_maxw(dev);
1620                 dev->height = norm_maxh(dev);
1621                 dev->hscale = 0;
1622                 dev->vscale = 0;
1623
1624                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1625                 em28xx_set_alternate(dev);
1626                 em28xx_resolution_set(dev);
1627
1628                 /* Needed, since GPIO might have disabled power of
1629                    some i2c device
1630                  */
1631                 em28xx_wake_i2c(dev);
1632
1633         }
1634         if (fh->radio) {
1635                 em28xx_videodbg("video_open: setting radio device\n");
1636                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1637         }
1638
1639         dev->users++;
1640
1641         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1642                         NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
1643                         sizeof(struct em28xx_buffer), fh);
1644
1645         mutex_unlock(&dev->lock);
1646
1647         return errCode;
1648 }
1649
1650 /*
1651  * em28xx_realease_resources()
1652  * unregisters the v4l2,i2c and usb devices
1653  * called when the device gets disconected or at module unload
1654 */
1655 void em28xx_release_analog_resources(struct em28xx *dev)
1656 {
1657
1658         /*FIXME: I2C IR should be disconnected */
1659
1660         if (dev->radio_dev) {
1661                 if (-1 != dev->radio_dev->minor)
1662                         video_unregister_device(dev->radio_dev);
1663                 else
1664                         video_device_release(dev->radio_dev);
1665                 dev->radio_dev = NULL;
1666         }
1667         if (dev->vbi_dev) {
1668                 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1669                             dev->vbi_dev->num);
1670                 if (-1 != dev->vbi_dev->minor)
1671                         video_unregister_device(dev->vbi_dev);
1672                 else
1673                         video_device_release(dev->vbi_dev);
1674                 dev->vbi_dev = NULL;
1675         }
1676         if (dev->vdev) {
1677                 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1678                             dev->vdev->num);
1679                 if (-1 != dev->vdev->minor)
1680                         video_unregister_device(dev->vdev);
1681                 else
1682                         video_device_release(dev->vdev);
1683                 dev->vdev = NULL;
1684         }
1685 }
1686
1687 /*
1688  * em28xx_v4l2_close()
1689  * stops streaming and deallocates all resources allocated by the v4l2
1690  * calls and ioctls
1691  */
1692 static int em28xx_v4l2_close(struct file *filp)
1693 {
1694         struct em28xx_fh *fh  = filp->private_data;
1695         struct em28xx    *dev = fh->dev;
1696         int              errCode;
1697
1698         em28xx_videodbg("users=%d\n", dev->users);
1699
1700
1701         mutex_lock(&dev->lock);
1702         if (res_check(fh))
1703                 res_free(fh);
1704
1705         if (dev->users == 1) {
1706                 videobuf_stop(&fh->vb_vidq);
1707                 videobuf_mmap_free(&fh->vb_vidq);
1708
1709                 /* the device is already disconnect,
1710                    free the remaining resources */
1711                 if (dev->state & DEV_DISCONNECTED) {
1712                         em28xx_release_resources(dev);
1713                         mutex_unlock(&dev->lock);
1714                         kfree(dev);
1715                         return 0;
1716                 }
1717
1718                 /* Save some power by putting tuner to sleep */
1719                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
1720
1721                 /* do this before setting alternate! */
1722                 em28xx_uninit_isoc(dev);
1723                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1724
1725                 /* set alternate 0 */
1726                 dev->alt = 0;
1727                 em28xx_videodbg("setting alternate 0\n");
1728                 errCode = usb_set_interface(dev->udev, 0, 0);
1729                 if (errCode < 0) {
1730                         em28xx_errdev("cannot change alternate number to "
1731                                         "0 (error=%i)\n", errCode);
1732                 }
1733         }
1734         kfree(fh);
1735         dev->users--;
1736         wake_up_interruptible_nr(&dev->open, 1);
1737         mutex_unlock(&dev->lock);
1738         return 0;
1739 }
1740
1741 /*
1742  * em28xx_v4l2_read()
1743  * will allocate buffers when called for the first time
1744  */
1745 static ssize_t
1746 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1747                  loff_t *pos)
1748 {
1749         struct em28xx_fh *fh = filp->private_data;
1750         struct em28xx *dev = fh->dev;
1751         int rc;
1752
1753         rc = check_dev(dev);
1754         if (rc < 0)
1755                 return rc;
1756
1757         /* FIXME: read() is not prepared to allow changing the video
1758            resolution while streaming. Seems a bug at em28xx_set_fmt
1759          */
1760
1761         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1762                 mutex_lock(&dev->lock);
1763                 rc = res_get(fh);
1764                 mutex_unlock(&dev->lock);
1765
1766                 if (unlikely(rc < 0))
1767                         return rc;
1768
1769                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1770                                         filp->f_flags & O_NONBLOCK);
1771         }
1772         return 0;
1773 }
1774
1775 /*
1776  * em28xx_v4l2_poll()
1777  * will allocate buffers when called for the first time
1778  */
1779 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
1780 {
1781         struct em28xx_fh *fh = filp->private_data;
1782         struct em28xx *dev = fh->dev;
1783         int rc;
1784
1785         rc = check_dev(dev);
1786         if (rc < 0)
1787                 return rc;
1788
1789         mutex_lock(&dev->lock);
1790         rc = res_get(fh);
1791         mutex_unlock(&dev->lock);
1792
1793         if (unlikely(rc < 0))
1794                 return POLLERR;
1795
1796         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1797                 return POLLERR;
1798
1799         return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1800 }
1801
1802 /*
1803  * em28xx_v4l2_mmap()
1804  */
1805 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1806 {
1807         struct em28xx_fh *fh    = filp->private_data;
1808         struct em28xx    *dev   = fh->dev;
1809         int              rc;
1810
1811         rc = check_dev(dev);
1812         if (rc < 0)
1813                 return rc;
1814
1815         mutex_lock(&dev->lock);
1816         rc = res_get(fh);
1817         mutex_unlock(&dev->lock);
1818
1819         if (unlikely(rc < 0))
1820                 return rc;
1821
1822         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1823
1824         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1825                 (unsigned long)vma->vm_start,
1826                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1827                 rc);
1828
1829         return rc;
1830 }
1831
1832 static const struct v4l2_file_operations em28xx_v4l_fops = {
1833         .owner         = THIS_MODULE,
1834         .open          = em28xx_v4l2_open,
1835         .release       = em28xx_v4l2_close,
1836         .read          = em28xx_v4l2_read,
1837         .poll          = em28xx_v4l2_poll,
1838         .mmap          = em28xx_v4l2_mmap,
1839         .ioctl         = video_ioctl2,
1840 };
1841
1842 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1843         .vidioc_querycap            = vidioc_querycap,
1844         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1845         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1846         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1847         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1848         .vidioc_g_audio             = vidioc_g_audio,
1849         .vidioc_s_audio             = vidioc_s_audio,
1850         .vidioc_cropcap             = vidioc_cropcap,
1851
1852         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
1853         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1854         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
1855
1856         .vidioc_reqbufs             = vidioc_reqbufs,
1857         .vidioc_querybuf            = vidioc_querybuf,
1858         .vidioc_qbuf                = vidioc_qbuf,
1859         .vidioc_dqbuf               = vidioc_dqbuf,
1860         .vidioc_s_std               = vidioc_s_std,
1861         .vidioc_enum_input          = vidioc_enum_input,
1862         .vidioc_g_input             = vidioc_g_input,
1863         .vidioc_s_input             = vidioc_s_input,
1864         .vidioc_queryctrl           = vidioc_queryctrl,
1865         .vidioc_g_ctrl              = vidioc_g_ctrl,
1866         .vidioc_s_ctrl              = vidioc_s_ctrl,
1867         .vidioc_streamon            = vidioc_streamon,
1868         .vidioc_streamoff           = vidioc_streamoff,
1869         .vidioc_g_tuner             = vidioc_g_tuner,
1870         .vidioc_s_tuner             = vidioc_s_tuner,
1871         .vidioc_g_frequency         = vidioc_g_frequency,
1872         .vidioc_s_frequency         = vidioc_s_frequency,
1873 #ifdef CONFIG_VIDEO_ADV_DEBUG
1874         .vidioc_g_register          = vidioc_g_register,
1875         .vidioc_s_register          = vidioc_s_register,
1876         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
1877 #endif
1878 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1879         .vidiocgmbuf                = vidiocgmbuf,
1880 #endif
1881 };
1882
1883 static const struct video_device em28xx_video_template = {
1884         .fops                       = &em28xx_v4l_fops,
1885         .release                    = video_device_release,
1886         .ioctl_ops                  = &video_ioctl_ops,
1887
1888         .minor                      = -1,
1889
1890         .tvnorms                    = V4L2_STD_ALL,
1891         .current_norm               = V4L2_STD_PAL,
1892 };
1893
1894 static const struct v4l2_file_operations radio_fops = {
1895         .owner         = THIS_MODULE,
1896         .open          = em28xx_v4l2_open,
1897         .release       = em28xx_v4l2_close,
1898         .ioctl         = video_ioctl2,
1899 };
1900
1901 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1902         .vidioc_querycap      = radio_querycap,
1903         .vidioc_g_tuner       = radio_g_tuner,
1904         .vidioc_enum_input    = radio_enum_input,
1905         .vidioc_g_audio       = radio_g_audio,
1906         .vidioc_s_tuner       = radio_s_tuner,
1907         .vidioc_s_audio       = radio_s_audio,
1908         .vidioc_s_input       = radio_s_input,
1909         .vidioc_queryctrl     = radio_queryctrl,
1910         .vidioc_g_ctrl        = vidioc_g_ctrl,
1911         .vidioc_s_ctrl        = vidioc_s_ctrl,
1912         .vidioc_g_frequency   = vidioc_g_frequency,
1913         .vidioc_s_frequency   = vidioc_s_frequency,
1914 #ifdef CONFIG_VIDEO_ADV_DEBUG
1915         .vidioc_g_register    = vidioc_g_register,
1916         .vidioc_s_register    = vidioc_s_register,
1917 #endif
1918 };
1919
1920 static struct video_device em28xx_radio_template = {
1921         .name                 = "em28xx-radio",
1922         .fops                 = &radio_fops,
1923         .ioctl_ops            = &radio_ioctl_ops,
1924         .minor                = -1,
1925 };
1926
1927 /******************************** usb interface ******************************/
1928
1929
1930
1931 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1932                                         const struct video_device *template,
1933                                         const char *type_name)
1934 {
1935         struct video_device *vfd;
1936
1937         vfd = video_device_alloc();
1938         if (NULL == vfd)
1939                 return NULL;
1940
1941         *vfd            = *template;
1942         vfd->minor      = -1;
1943         vfd->v4l2_dev   = &dev->v4l2_dev;
1944         vfd->release    = video_device_release;
1945         vfd->debug      = video_debug;
1946
1947         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1948                  dev->name, type_name);
1949
1950         return vfd;
1951 }
1952
1953 int em28xx_register_analog_devices(struct em28xx *dev)
1954 {
1955       u8 val;
1956         int ret;
1957
1958         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
1959                 dev->name,
1960                 (EM28XX_VERSION_CODE >> 16) & 0xff,
1961                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
1962
1963         /* set default norm */
1964         dev->norm = em28xx_video_template.current_norm;
1965         dev->width = norm_maxw(dev);
1966         dev->height = norm_maxh(dev);
1967         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1968         dev->hscale = 0;
1969         dev->vscale = 0;
1970         dev->ctl_input = 0;
1971
1972         /* Analog specific initialization */
1973         dev->format = &format[0];
1974         video_mux(dev, dev->ctl_input);
1975
1976         /* Audio defaults */
1977         dev->mute = 1;
1978         dev->volume = 0x1f;
1979
1980         /* enable vbi capturing */
1981
1982 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
1983         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
1984         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
1985                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
1986         em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
1987
1988         em28xx_set_outfmt(dev);
1989         em28xx_colorlevels_set_default(dev);
1990         em28xx_compression_disable(dev);
1991
1992         /* allocate and fill video video_device struct */
1993         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
1994         if (!dev->vdev) {
1995                 em28xx_errdev("cannot allocate video_device.\n");
1996                 return -ENODEV;
1997         }
1998
1999         /* register v4l2 video video_device */
2000         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2001                                        video_nr[dev->devno]);
2002         if (ret) {
2003                 em28xx_errdev("unable to register video device (error=%i).\n",
2004                               ret);
2005                 return ret;
2006         }
2007
2008         /* Allocate and fill vbi video_device struct */
2009         dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2010
2011         /* register v4l2 vbi video_device */
2012         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2013                                         vbi_nr[dev->devno]);
2014         if (ret < 0) {
2015                 em28xx_errdev("unable to register vbi device\n");
2016                 return ret;
2017         }
2018
2019         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2020                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2021                                                   "radio");
2022                 if (!dev->radio_dev) {
2023                         em28xx_errdev("cannot allocate video_device.\n");
2024                         return -ENODEV;
2025                 }
2026                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2027                                             radio_nr[dev->devno]);
2028                 if (ret < 0) {
2029                         em28xx_errdev("can't register radio device\n");
2030                         return ret;
2031                 }
2032                 em28xx_info("Registered radio device as /dev/radio%d\n",
2033                             dev->radio_dev->num);
2034         }
2035
2036         em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2037                                 dev->vdev->num, dev->vbi_dev->num);
2038
2039         return 0;
2040 }