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   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, 1)
  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                 lencopy = remain = (char *)outp + buf->vb.size - (char *)startwrite;
 190         }
 191         if (lencopy <= 0)
 192                 return;
 193         memcpy(startwrite, startread, lencopy);
 194
 195         remain -= lencopy;
 196
 197         while (remain > 0) {
 198                 startwrite += lencopy + bytesperline;
 199                 startread += lencopy;
 200                 if (bytesperline > remain)
 201                         lencopy = remain;
 202                 else
 203                         lencopy = bytesperline;
 204
 205                 if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
 206                         em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
 207                                        ((char *)startwrite + lencopy) -
 208                                        ((char *)outp + buf->vb.size));
 209                         lencopy = remain = (char *)outp + buf->vb.size -
 210                                            (char *)startwrite;
 211                 }
 212                 if (lencopy <= 0)
 213                         break;
 214
 215                 memcpy(startwrite, startread, lencopy);
 216
 217                 remain -= lencopy;
 218         }
 219
 220         dma_q->pos += len;
 221 }
 222
 223 static inline void print_err_status(struct em28xx *dev,
 224                                      int packet, int status)
 225 {
 226         char *errmsg = "Unknown";
 227
 228         switch (status) {
 229         case -ENOENT:
 230                 errmsg = "unlinked synchronuously";
 231                 break;
 232         case -ECONNRESET:
 233                 errmsg = "unlinked asynchronuously";
 234                 break;
 235         case -ENOSR:
 236                 errmsg = "Buffer error (overrun)";
 237                 break;
 238         case -EPIPE:
 239                 errmsg = "Stalled (device not responding)";
 240                 break;
 241         case -EOVERFLOW:
 242                 errmsg = "Babble (bad cable?)";
 243                 break;
 244         case -EPROTO:
 245                 errmsg = "Bit-stuff error (bad cable?)";
 246                 break;
 247         case -EILSEQ:
 248                 errmsg = "CRC/Timeout (could be anything)";
 249                 break;
 250         case -ETIME:
 251                 errmsg = "Device does not respond";
 252                 break;
 253         }
 254         if (packet < 0) {
 255                 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 256         } else {
 257                 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
 258                                packet, status, errmsg);
 259         }
 260 }
 261
 262 /*
 263  * video-buf generic routine to get the next available buffer
 264  */
 265 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
 266                                           struct em28xx_buffer **buf)
 267 {
 268         struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
 269         char *outp;
 270
 271         if (list_empty(&dma_q->active)) {
 272                 em28xx_isocdbg("No active queue to serve\n");
 273                 dev->isoc_ctl.buf = NULL;
 274                 *buf = NULL;
 275                 return;
 276         }
 277
 278         /* Get the next buffer */
 279         *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
 280
 281         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 282         outp = videobuf_to_vmalloc(&(*buf)->vb);
 283         memset(outp, 0, (*buf)->vb.size);
 284
 285         dev->isoc_ctl.buf = *buf;
 286
 287         return;
 288 }
 289
 290 /*
 291  * Controls the isoc copy of each urb packet
 292  */
 293 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
 294 {
 295         struct em28xx_buffer    *buf;
 296         struct em28xx_dmaqueue  *dma_q = urb->context;
 297         unsigned char *outp = NULL;
 298         int i, len = 0, rc = 1;
 299         unsigned char *p;
 300
 301         if (!dev)
 302                 return 0;
 303
 304         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 305                 return 0;
 306
 307         if (urb->status < 0) {
 308                 print_err_status(dev, -1, urb->status);
 309                 if (urb->status == -ENOENT)
 310                         return 0;
 311         }
 312
 313         buf = dev->isoc_ctl.buf;
 314         if (buf != NULL)
 315                 outp = videobuf_to_vmalloc(&buf->vb);
 316
 317         for (i = 0; i < urb->number_of_packets; i++) {
 318                 int status = urb->iso_frame_desc[i].status;
 319
 320                 if (status < 0) {
 321                         print_err_status(dev, i, status);
 322                         if (urb->iso_frame_desc[i].status != -EPROTO)
 323                                 continue;
 324                 }
 325
 326                 len = urb->iso_frame_desc[i].actual_length - 4;
 327
 328                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 329                         /* em28xx_isocdbg("packet %d is empty",i); - spammy */
 330                         continue;
 331                 }
 332                 if (urb->iso_frame_desc[i].actual_length >
 333                                                 dev->max_pkt_size) {
 334                         em28xx_isocdbg("packet bigger than packet size");
 335                         continue;
 336                 }
 337
 338                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 339
 340                 /* FIXME: incomplete buffer checks where removed to make
 341                    logic simpler. Impacts of those changes should be evaluated
 342                  */
 343                 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
 344                         em28xx_isocdbg("VBI HEADER!!!\n");
 345                         /* FIXME: Should add vbi copy */
 346                         continue;
 347                 }
 348                 if (p[0] == 0x22 && p[1] == 0x5a) {
 349                         em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
 350                                        len, (p[2] & 1)? "odd" : "even");
 351
 352                         if (!(p[2] & 1)) {
 353                                 if (buf != NULL)
 354                                         buffer_filled(dev, dma_q, buf);
 355                                 get_next_buf(dma_q, &buf);
 356                                 if (buf == NULL)
 357                                         outp = NULL;
 358                                 else
 359                                         outp = videobuf_to_vmalloc(&buf->vb);
 360                         }
 361
 362                         if (buf != NULL) {
 363                                 if (p[2] & 1)
 364                                         buf->top_field = 0;
 365                                 else
 366                                         buf->top_field = 1;
 367                         }
 368
 369                         dma_q->pos = 0;
 370                 }
 371                 if (buf != NULL)
 372                         em28xx_copy_video(dev, dma_q, buf, p, outp, len);
 373         }
 374         return rc;
 375 }
 376
 377 /* ------------------------------------------------------------------
 378         Videobuf operations
 379    ------------------------------------------------------------------*/
 380
 381 static int
 382 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 383 {
 384         struct em28xx_fh *fh = vq->priv_data;
 385         struct em28xx        *dev = fh->dev;
 386         struct v4l2_frequency f;
 387
 388         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
 389
 390         if (0 == *count)
 391                 *count = EM28XX_DEF_BUF;
 392
 393         if (*count < EM28XX_MIN_BUF)
 394                 *count = EM28XX_MIN_BUF;
 395
 396         /* Ask tuner to go to analog or radio mode */
 397         memset(&f, 0, sizeof(f));
 398         f.frequency = dev->ctl_freq;
 399         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 400
 401         em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
 402
 403         return 0;
 404 }
 405
 406 /* This is called *without* dev->slock held; please keep it that way */
 407 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
 408 {
 409         struct em28xx_fh     *fh  = vq->priv_data;
 410         struct em28xx        *dev = fh->dev;
 411         unsigned long flags = 0;
 412         if (in_interrupt())
 413                 BUG();
 414
 415         /* We used to wait for the buffer to finish here, but this didn't work
 416            because, as we were keeping the state as VIDEOBUF_QUEUED,
 417            videobuf_queue_cancel marked it as finished for us.
 418            (Also, it could wedge forever if the hardware was misconfigured.)
 419
 420            This should be safe; by the time we get here, the buffer isn't
 421            queued anymore. If we ever start marking the buffers as
 422            VIDEOBUF_ACTIVE, it won't be, though.
 423         */
 424         spin_lock_irqsave(&dev->slock, flags);
 425         if (dev->isoc_ctl.buf == buf)
 426                 dev->isoc_ctl.buf = NULL;
 427         spin_unlock_irqrestore(&dev->slock, flags);
 428
 429         videobuf_vmalloc_free(&buf->vb);
 430         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 431 }
 432
 433 static int
 434 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 435                                                 enum v4l2_field field)
 436 {
 437         struct em28xx_fh     *fh  = vq->priv_data;
 438         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 439         struct em28xx        *dev = fh->dev;
 440         int                  rc = 0, urb_init = 0;
 441
 442         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
 443
 444         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 445                 return -EINVAL;
 446
 447         buf->vb.width  = dev->width;
 448         buf->vb.height = dev->height;
 449         buf->vb.field  = field;
 450
 451         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 452                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 453                 if (rc < 0)
 454                         goto fail;
 455         }
 456
 457         if (!dev->isoc_ctl.num_bufs)
 458                 urb_init = 1;
 459
 460         if (urb_init) {
 461                 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
 462                                       EM28XX_NUM_BUFS, dev->max_pkt_size,
 463                                       em28xx_isoc_copy);
 464                 if (rc < 0)
 465                         goto fail;
 466         }
 467
 468         buf->vb.state = VIDEOBUF_PREPARED;
 469         return 0;
 470
 471 fail:
 472         free_buffer(vq, buf);
 473         return rc;
 474 }
 475
 476 static void
 477 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 478 {
 479         struct em28xx_buffer    *buf     = container_of(vb, struct em28xx_buffer, vb);
 480         struct em28xx_fh        *fh      = vq->priv_data;
 481         struct em28xx           *dev     = fh->dev;
 482         struct em28xx_dmaqueue  *vidq    = &dev->vidq;
 483
 484         buf->vb.state = VIDEOBUF_QUEUED;
 485         list_add_tail(&buf->vb.queue, &vidq->active);
 486
 487 }
 488
 489 static void buffer_release(struct videobuf_queue *vq,
 490                                 struct videobuf_buffer *vb)
 491 {
 492         struct em28xx_buffer   *buf  = container_of(vb, struct em28xx_buffer, vb);
 493         struct em28xx_fh       *fh   = vq->priv_data;
 494         struct em28xx          *dev  = (struct em28xx *)fh->dev;
 495
 496         em28xx_isocdbg("em28xx: called buffer_release\n");
 497
 498         free_buffer(vq, buf);
 499 }
 500
 501 static struct videobuf_queue_ops em28xx_video_qops = {
 502         .buf_setup      = buffer_setup,
 503         .buf_prepare    = buffer_prepare,
 504         .buf_queue      = buffer_queue,
 505         .buf_release    = buffer_release,
 506 };
 507
 508 /*********************  v4l2 interface  **************************************/
 509
 510 static void video_mux(struct em28xx *dev, int index)
 511 {
 512         struct v4l2_routing route;
 513
 514         route.input = INPUT(index)->vmux;
 515         route.output = 0;
 516         dev->ctl_input = index;
 517         dev->ctl_ainput = INPUT(index)->amux;
 518         dev->ctl_aoutput = INPUT(index)->aout;
 519
 520         if (!dev->ctl_aoutput)
 521                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 522
 523         em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
 524
 525         if (dev->board.has_msp34xx) {
 526                 if (dev->i2s_speed) {
 527                         em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ,
 528                                 &dev->i2s_speed);
 529                 }
 530                 route.input = dev->ctl_ainput;
 531                 route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
 532                 /* Note: this is msp3400 specific */
 533                 em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING,
 534                         &route);
 535         }
 536
 537         em28xx_audio_analog_set(dev);
 538 }
 539
 540 /* Usage lock check functions */
 541 static int res_get(struct em28xx_fh *fh)
 542 {
 543         struct em28xx    *dev = fh->dev;
 544         int              rc   = 0;
 545
 546         /* This instance already has stream_on */
 547         if (fh->stream_on)
 548                 return rc;
 549
 550         if (dev->stream_on)
 551                 return -EBUSY;
 552
 553         dev->stream_on = 1;
 554         fh->stream_on  = 1;
 555         return rc;
 556 }
 557
 558 static int res_check(struct em28xx_fh *fh)
 559 {
 560         return (fh->stream_on);
 561 }
 562
 563 static void res_free(struct em28xx_fh *fh)
 564 {
 565         struct em28xx    *dev = fh->dev;
 566
 567         fh->stream_on = 0;
 568         dev->stream_on = 0;
 569 }
 570
 571 /*
 572  * em28xx_get_ctrl()
 573  * return the current saturation, brightness or contrast, mute state
 574  */
 575 static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
 576 {
 577         switch (ctrl->id) {
 578         case V4L2_CID_AUDIO_MUTE:
 579                 ctrl->value = dev->mute;
 580                 return 0;
 581         case V4L2_CID_AUDIO_VOLUME:
 582                 ctrl->value = dev->volume;
 583                 return 0;
 584         default:
 585                 return -EINVAL;
 586         }
 587 }
 588
 589 /*
 590  * em28xx_set_ctrl()
 591  * mute or set new saturation, brightness or contrast
 592  */
 593 static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
 594 {
 595         switch (ctrl->id) {
 596         case V4L2_CID_AUDIO_MUTE:
 597                 if (ctrl->value != dev->mute) {
 598                         dev->mute = ctrl->value;
 599                         return em28xx_audio_analog_set(dev);
 600                 }
 601                 return 0;
 602         case V4L2_CID_AUDIO_VOLUME:
 603                 dev->volume = ctrl->value;
 604                 return em28xx_audio_analog_set(dev);
 605         default:
 606                 return -EINVAL;
 607         }
 608 }
 609
 610 static int check_dev(struct em28xx *dev)
 611 {
 612         if (dev->state & DEV_DISCONNECTED) {
 613                 em28xx_errdev("v4l2 ioctl: device not present\n");
 614                 return -ENODEV;
 615         }
 616
 617         if (dev->state & DEV_MISCONFIGURED) {
 618                 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
 619                               "close and open it again\n");
 620                 return -EIO;
 621         }
 622         return 0;
 623 }
 624
 625 static void get_scale(struct em28xx *dev,
 626                         unsigned int width, unsigned int height,
 627                         unsigned int *hscale, unsigned int *vscale)
 628 {
 629         unsigned int          maxw   = norm_maxw(dev);
 630         unsigned int          maxh   = norm_maxh(dev);
 631
 632         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 633         if (*hscale >= 0x4000)
 634                 *hscale = 0x3fff;
 635
 636         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 637         if (*vscale >= 0x4000)
 638                 *vscale = 0x3fff;
 639 }
 640
 641 /* ------------------------------------------------------------------
 642         IOCTL vidioc handling
 643    ------------------------------------------------------------------*/
 644
 645 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 646                                         struct v4l2_format *f)
 647 {
 648         struct em28xx_fh      *fh  = priv;
 649         struct em28xx         *dev = fh->dev;
 650
 651         mutex_lock(&dev->lock);
 652
 653         f->fmt.pix.width = dev->width;
 654         f->fmt.pix.height = dev->height;
 655         f->fmt.pix.pixelformat = dev->format->fourcc;
 656         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 657         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
 658         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 659
 660         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
 661         f->fmt.pix.field = dev->interlaced ?
 662                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 663
 664         mutex_unlock(&dev->lock);
 665         return 0;
 666 }
 667
 668 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
 669 {
 670         unsigned int i;
 671
 672         for (i = 0; i < ARRAY_SIZE(format); i++)
 673                 if (format[i].fourcc == fourcc)
 674                         return &format[i];
 675
 676         return NULL;
 677 }
 678
 679 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 680                         struct v4l2_format *f)
 681 {
 682         struct em28xx_fh      *fh    = priv;
 683         struct em28xx         *dev   = fh->dev;
 684         int                   width  = f->fmt.pix.width;
 685         int                   height = f->fmt.pix.height;
 686         unsigned int          maxw   = norm_maxw(dev);
 687         unsigned int          maxh   = norm_maxh(dev);
 688         unsigned int          hscale, vscale;
 689         struct em28xx_fmt     *fmt;
 690
 691         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 692         if (!fmt) {
 693                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
 694                                 f->fmt.pix.pixelformat);
 695                 return -EINVAL;
 696         }
 697
 698         /* width must even because of the YUYV format
 699            height must be even because of interlacing */
 700         height &= 0xfffe;
 701         width  &= 0xfffe;
 702
 703         if (unlikely(height < 32))
 704                 height = 32;
 705         if (unlikely(height > maxh))
 706                 height = maxh;
 707         if (unlikely(width < 48))
 708                 width = 48;
 709         if (unlikely(width > maxw))
 710                 width = maxw;
 711
 712         if (dev->board.is_em2800) {
 713                 /* the em2800 can only scale down to 50% */
 714                 if (height % (maxh / 2))
 715                         height = maxh;
 716                 if (width % (maxw / 2))
 717                         width = maxw;
 718                 /* according to empiatech support */
 719                 /* the MaxPacketSize is to small to support */
 720                 /* framesizes larger than 640x480 @ 30 fps */
 721                 /* or 640x576 @ 25 fps. As this would cut */
 722                 /* of a part of the image we prefer */
 723                 /* 360x576 or 360x480 for now */
 724                 if (width == maxw && height == maxh)
 725                         width /= 2;
 726         }
 727
 728         get_scale(dev, width, height, &hscale, &vscale);
 729
 730         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 731         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 732
 733         f->fmt.pix.width = width;
 734         f->fmt.pix.height = height;
 735         f->fmt.pix.pixelformat = fmt->fourcc;
 736         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 737         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 738         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 739         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 740
 741         return 0;
 742 }
 743
 744 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 745                         struct v4l2_format *f)
 746 {
 747         struct em28xx_fh      *fh  = priv;
 748         struct em28xx         *dev = fh->dev;
 749         int                   rc;
 750         struct em28xx_fmt     *fmt;
 751
 752         rc = check_dev(dev);
 753         if (rc < 0)
 754                 return rc;
 755
 756         mutex_lock(&dev->lock);
 757
 758         vidioc_try_fmt_vid_cap(file, priv, f);
 759
 760         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 761         if (!fmt) {
 762                 rc = -EINVAL;
 763                 goto out;
 764         }
 765
 766         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 767                 em28xx_errdev("%s queue busy\n", __func__);
 768                 rc = -EBUSY;
 769                 goto out;
 770         }
 771
 772         if (dev->stream_on && !fh->stream_on) {
 773                 em28xx_errdev("%s device in use by another fh\n", __func__);
 774                 rc = -EBUSY;
 775                 goto out;
 776         }
 777
 778         /* set new image size */
 779         dev->width = f->fmt.pix.width;
 780         dev->height = f->fmt.pix.height;
 781         dev->format = fmt;
 782         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 783
 784         em28xx_set_alternate(dev);
 785         em28xx_resolution_set(dev);
 786
 787         rc = 0;
 788
 789 out:
 790         mutex_unlock(&dev->lock);
 791         return rc;
 792 }
 793
 794 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
 795 {
 796         struct em28xx_fh   *fh  = priv;
 797         struct em28xx      *dev = fh->dev;
 798         struct v4l2_format f;
 799         int                rc;
 800
 801         rc = check_dev(dev);
 802         if (rc < 0)
 803                 return rc;
 804
 805         mutex_lock(&dev->lock);
 806         dev->norm = *norm;
 807
 808         /* Adjusts width/height, if needed */
 809         f.fmt.pix.width = dev->width;
 810         f.fmt.pix.height = dev->height;
 811         vidioc_try_fmt_vid_cap(file, priv, &f);
 812
 813         /* set new image size */
 814         dev->width = f.fmt.pix.width;
 815         dev->height = f.fmt.pix.height;
 816         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 817
 818         em28xx_resolution_set(dev);
 819         em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm);
 820
 821         mutex_unlock(&dev->lock);
 822         return 0;
 823 }
 824
 825 static const char *iname[] = {
 826         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
 827         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
 828         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
 829         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
 830         [EM28XX_VMUX_SVIDEO]     = "S-Video",
 831         [EM28XX_VMUX_TELEVISION] = "Television",
 832         [EM28XX_VMUX_CABLE]      = "Cable TV",
 833         [EM28XX_VMUX_DVB]        = "DVB",
 834         [EM28XX_VMUX_DEBUG]      = "for debug only",
 835 };
 836
 837 static int vidioc_enum_input(struct file *file, void *priv,
 838                                 struct v4l2_input *i)
 839 {
 840         struct em28xx_fh   *fh  = priv;
 841         struct em28xx      *dev = fh->dev;
 842         unsigned int       n;
 843
 844         n = i->index;
 845         if (n >= MAX_EM28XX_INPUT)
 846                 return -EINVAL;
 847         if (0 == INPUT(n)->type)
 848                 return -EINVAL;
 849
 850         i->index = n;
 851         i->type = V4L2_INPUT_TYPE_CAMERA;
 852
 853         strcpy(i->name, iname[INPUT(n)->type]);
 854
 855         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
 856                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
 857                 i->type = V4L2_INPUT_TYPE_TUNER;
 858
 859         i->std = dev->vdev->tvnorms;
 860
 861         return 0;
 862 }
 863
 864 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 865 {
 866         struct em28xx_fh   *fh  = priv;
 867         struct em28xx      *dev = fh->dev;
 868
 869         *i = dev->ctl_input;
 870
 871         return 0;
 872 }
 873
 874 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
 875 {
 876         struct em28xx_fh   *fh  = priv;
 877         struct em28xx      *dev = fh->dev;
 878         int                rc;
 879
 880         rc = check_dev(dev);
 881         if (rc < 0)
 882                 return rc;
 883
 884         if (i >= MAX_EM28XX_INPUT)
 885                 return -EINVAL;
 886         if (0 == INPUT(i)->type)
 887                 return -EINVAL;
 888
 889         dev->ctl_input = i;
 890
 891         mutex_lock(&dev->lock);
 892         video_mux(dev, dev->ctl_input);
 893         mutex_unlock(&dev->lock);
 894         return 0;
 895 }
 896
 897 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 898 {
 899         struct em28xx_fh   *fh    = priv;
 900         struct em28xx      *dev   = fh->dev;
 901
 902         switch (a->index) {
 903         case EM28XX_AMUX_VIDEO:
 904                 strcpy(a->name, "Television");
 905                 break;
 906         case EM28XX_AMUX_LINE_IN:
 907                 strcpy(a->name, "Line In");
 908                 break;
 909         case EM28XX_AMUX_VIDEO2:
 910                 strcpy(a->name, "Television alt");
 911                 break;
 912         case EM28XX_AMUX_PHONE:
 913                 strcpy(a->name, "Phone");
 914                 break;
 915         case EM28XX_AMUX_MIC:
 916                 strcpy(a->name, "Mic");
 917                 break;
 918         case EM28XX_AMUX_CD:
 919                 strcpy(a->name, "CD");
 920                 break;
 921         case EM28XX_AMUX_AUX:
 922                 strcpy(a->name, "Aux");
 923                 break;
 924         case EM28XX_AMUX_PCM_OUT:
 925                 strcpy(a->name, "PCM");
 926                 break;
 927         default:
 928                 return -EINVAL;
 929         }
 930
 931         a->index = dev->ctl_ainput;
 932         a->capability = V4L2_AUDCAP_STEREO;
 933
 934         return 0;
 935 }
 936
 937 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
 938 {
 939         struct em28xx_fh   *fh  = priv;
 940         struct em28xx      *dev = fh->dev;
 941
 942
 943         if (a->index >= MAX_EM28XX_INPUT)
 944                 return -EINVAL;
 945         if (0 == INPUT(a->index)->type)
 946                 return -EINVAL;
 947
 948         mutex_lock(&dev->lock);
 949
 950         dev->ctl_ainput = INPUT(a->index)->amux;
 951         dev->ctl_aoutput = INPUT(a->index)->aout;
 952
 953         if (!dev->ctl_aoutput)
 954                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 955
 956         mutex_unlock(&dev->lock);
 957         return 0;
 958 }
 959
 960 static int vidioc_queryctrl(struct file *file, void *priv,
 961                                 struct v4l2_queryctrl *qc)
 962 {
 963         struct em28xx_fh      *fh  = priv;
 964         struct em28xx         *dev = fh->dev;
 965         int                   id  = qc->id;
 966         int                   i;
 967         int                   rc;
 968
 969         rc = check_dev(dev);
 970         if (rc < 0)
 971                 return rc;
 972
 973         memset(qc, 0, sizeof(*qc));
 974
 975         qc->id = id;
 976
 977         if (!dev->board.has_msp34xx) {
 978                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
 979                         if (qc->id && qc->id == em28xx_qctrl[i].id) {
 980                                 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
 981                                 return 0;
 982                         }
 983                 }
 984         }
 985         mutex_lock(&dev->lock);
 986         em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc);
 987         mutex_unlock(&dev->lock);
 988
 989         if (qc->type)
 990                 return 0;
 991         else
 992                 return -EINVAL;
 993 }
 994
 995 static int vidioc_g_ctrl(struct file *file, void *priv,
 996                                 struct v4l2_control *ctrl)
 997 {
 998         struct em28xx_fh      *fh  = priv;
 999         struct em28xx         *dev = fh->dev;
1000         int                   rc;
1001
1002         rc = check_dev(dev);
1003         if (rc < 0)
1004                 return rc;
1005         rc = 0;
1006
1007         mutex_lock(&dev->lock);
1008
1009         if (dev->board.has_msp34xx)
1010                 em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl);
1011         else {
1012                 rc = em28xx_get_ctrl(dev, ctrl);
1013                 if (rc < 0) {
1014                         em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl);
1015                         rc = 0;
1016                 }
1017         }
1018
1019         mutex_unlock(&dev->lock);
1020         return rc;
1021 }
1022
1023 static int vidioc_s_ctrl(struct file *file, void *priv,
1024                                 struct v4l2_control *ctrl)
1025 {
1026         struct em28xx_fh      *fh  = priv;
1027         struct em28xx         *dev = fh->dev;
1028         u8                    i;
1029         int                   rc;
1030
1031         rc = check_dev(dev);
1032         if (rc < 0)
1033                 return rc;
1034
1035         mutex_lock(&dev->lock);
1036
1037         if (dev->board.has_msp34xx)
1038                 em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
1039         else {
1040                 rc = 1;
1041                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1042                         if (ctrl->id == em28xx_qctrl[i].id) {
1043                                 if (ctrl->value < em28xx_qctrl[i].minimum ||
1044                                     ctrl->value > em28xx_qctrl[i].maximum) {
1045                                         rc = -ERANGE;
1046                                         break;
1047                                 }
1048
1049                                 rc = em28xx_set_ctrl(dev, ctrl);
1050                                 break;
1051                         }
1052                 }
1053         }
1054
1055         /* Control not found - try to send it to the attached devices */
1056         if (rc == 1) {
1057                 em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl);
1058                 rc = 0;
1059         }
1060
1061         mutex_unlock(&dev->lock);
1062         return rc;
1063 }
1064
1065 static int vidioc_g_tuner(struct file *file, void *priv,
1066                                 struct v4l2_tuner *t)
1067 {
1068         struct em28xx_fh      *fh  = priv;
1069         struct em28xx         *dev = fh->dev;
1070         int                   rc;
1071
1072         rc = check_dev(dev);
1073         if (rc < 0)
1074                 return rc;
1075
1076         if (0 != t->index)
1077                 return -EINVAL;
1078
1079         strcpy(t->name, "Tuner");
1080
1081         mutex_lock(&dev->lock);
1082
1083         em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
1084
1085         mutex_unlock(&dev->lock);
1086         return 0;
1087 }
1088
1089 static int vidioc_s_tuner(struct file *file, void *priv,
1090                                 struct v4l2_tuner *t)
1091 {
1092         struct em28xx_fh      *fh  = priv;
1093         struct em28xx         *dev = fh->dev;
1094         int                   rc;
1095
1096         rc = check_dev(dev);
1097         if (rc < 0)
1098                 return rc;
1099
1100         if (0 != t->index)
1101                 return -EINVAL;
1102
1103         mutex_lock(&dev->lock);
1104
1105         em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
1106
1107         mutex_unlock(&dev->lock);
1108         return 0;
1109 }
1110
1111 static int vidioc_g_frequency(struct file *file, void *priv,
1112                                 struct v4l2_frequency *f)
1113 {
1114         struct em28xx_fh      *fh  = priv;
1115         struct em28xx         *dev = fh->dev;
1116
1117         mutex_lock(&dev->lock);
1118         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1119         f->frequency = dev->ctl_freq;
1120         mutex_unlock(&dev->lock);
1121
1122         return 0;
1123 }
1124
1125 static int vidioc_s_frequency(struct file *file, void *priv,
1126                                 struct v4l2_frequency *f)
1127 {
1128         struct em28xx_fh      *fh  = priv;
1129         struct em28xx         *dev = fh->dev;
1130         int                   rc;
1131
1132         rc = check_dev(dev);
1133         if (rc < 0)
1134                 return rc;
1135
1136         if (0 != f->tuner)
1137                 return -EINVAL;
1138
1139         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1140                 return -EINVAL;
1141         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1142                 return -EINVAL;
1143
1144         mutex_lock(&dev->lock);
1145
1146         dev->ctl_freq = f->frequency;
1147         em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
1148
1149         mutex_unlock(&dev->lock);
1150
1151         return 0;
1152 }
1153
1154 #ifdef CONFIG_VIDEO_ADV_DEBUG
1155 static int em28xx_reg_len(int reg)
1156 {
1157         switch (reg) {
1158         case EM28XX_R40_AC97LSB:
1159         case EM28XX_R30_HSCALELOW:
1160         case EM28XX_R32_VSCALELOW:
1161                 return 2;
1162         default:
1163                 return 1;
1164         }
1165 }
1166
1167 static int vidioc_g_chip_ident(struct file *file, void *priv,
1168                struct v4l2_dbg_chip_ident *chip)
1169 {
1170         struct em28xx_fh      *fh  = priv;
1171         struct em28xx         *dev = fh->dev;
1172
1173         chip->ident = V4L2_IDENT_NONE;
1174         chip->revision = 0;
1175
1176         em28xx_i2c_call_clients(dev, VIDIOC_DBG_G_CHIP_IDENT, chip);
1177
1178         return 0;
1179 }
1180
1181
1182 static int vidioc_g_register(struct file *file, void *priv,
1183                              struct v4l2_dbg_register *reg)
1184 {
1185         struct em28xx_fh      *fh  = priv;
1186         struct em28xx         *dev = fh->dev;
1187         int ret;
1188
1189         switch (reg->match.type) {
1190         case V4L2_CHIP_MATCH_AC97:
1191                 mutex_lock(&dev->lock);
1192                 ret = em28xx_read_ac97(dev, reg->reg);
1193                 mutex_unlock(&dev->lock);
1194                 if (ret < 0)
1195                         return ret;
1196
1197                 reg->val = ret;
1198                 reg->size = 1;
1199                 return 0;
1200         case V4L2_CHIP_MATCH_I2C_DRIVER:
1201                 em28xx_i2c_call_clients(dev, VIDIOC_DBG_G_REGISTER, reg);
1202                 return 0;
1203         case V4L2_CHIP_MATCH_I2C_ADDR:
1204                 /* Not supported yet */
1205                 return -EINVAL;
1206         default:
1207                 if (!v4l2_chip_match_host(&reg->match))
1208                         return -EINVAL;
1209         }
1210
1211         /* Match host */
1212         reg->size = em28xx_reg_len(reg->reg);
1213         if (reg->size == 1) {
1214                 mutex_lock(&dev->lock);
1215                 ret = em28xx_read_reg(dev, reg->reg);
1216                 mutex_unlock(&dev->lock);
1217
1218                 if (ret < 0)
1219                         return ret;
1220
1221                 reg->val = ret;
1222         } else {
1223                 __le16 val = 0;
1224                 mutex_lock(&dev->lock);
1225                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1226                                                    reg->reg, (char *)&val, 2);
1227                 mutex_unlock(&dev->lock);
1228                 if (ret < 0)
1229                         return ret;
1230
1231                 reg->val = le16_to_cpu(val);
1232         }
1233
1234         return 0;
1235 }
1236
1237 static int vidioc_s_register(struct file *file, void *priv,
1238                              struct v4l2_dbg_register *reg)
1239 {
1240         struct em28xx_fh      *fh  = priv;
1241         struct em28xx         *dev = fh->dev;
1242         __le16 buf;
1243         int    rc;
1244
1245         switch (reg->match.type) {
1246         case V4L2_CHIP_MATCH_AC97:
1247                 mutex_lock(&dev->lock);
1248                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1249                 mutex_unlock(&dev->lock);
1250
1251                 return rc;
1252         case V4L2_CHIP_MATCH_I2C_DRIVER:
1253                 em28xx_i2c_call_clients(dev, VIDIOC_DBG_S_REGISTER, reg);
1254                 return 0;
1255         case V4L2_CHIP_MATCH_I2C_ADDR:
1256                 /* Not supported yet */
1257                 return -EINVAL;
1258         default:
1259                 if (!v4l2_chip_match_host(&reg->match))
1260                         return -EINVAL;
1261         }
1262
1263         /* Match host */
1264         buf = cpu_to_le16(reg->val);
1265
1266         mutex_lock(&dev->lock);
1267         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1268                                em28xx_reg_len(reg->reg));
1269         mutex_unlock(&dev->lock);
1270
1271         return rc;
1272 }
1273 #endif
1274
1275
1276 static int vidioc_cropcap(struct file *file, void *priv,
1277                                         struct v4l2_cropcap *cc)
1278 {
1279         struct em28xx_fh      *fh  = priv;
1280         struct em28xx         *dev = fh->dev;
1281
1282         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1283                 return -EINVAL;
1284
1285         cc->bounds.left = 0;
1286         cc->bounds.top = 0;
1287         cc->bounds.width = dev->width;
1288         cc->bounds.height = dev->height;
1289         cc->defrect = cc->bounds;
1290         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1291         cc->pixelaspect.denominator = 59;
1292
1293         return 0;
1294 }
1295
1296 static int vidioc_streamon(struct file *file, void *priv,
1297                                         enum v4l2_buf_type type)
1298 {
1299         struct em28xx_fh      *fh  = priv;
1300         struct em28xx         *dev = fh->dev;
1301         int                   rc;
1302
1303         rc = check_dev(dev);
1304         if (rc < 0)
1305                 return rc;
1306
1307
1308         mutex_lock(&dev->lock);
1309         rc = res_get(fh);
1310
1311         if (likely(rc >= 0))
1312                 rc = videobuf_streamon(&fh->vb_vidq);
1313
1314         mutex_unlock(&dev->lock);
1315
1316         return rc;
1317 }
1318
1319 static int vidioc_streamoff(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         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1331                 return -EINVAL;
1332         if (type != fh->type)
1333                 return -EINVAL;
1334
1335         mutex_lock(&dev->lock);
1336
1337         videobuf_streamoff(&fh->vb_vidq);
1338         res_free(fh);
1339
1340         mutex_unlock(&dev->lock);
1341
1342         return 0;
1343 }
1344
1345 static int vidioc_querycap(struct file *file, void  *priv,
1346                                         struct v4l2_capability *cap)
1347 {
1348         struct em28xx_fh      *fh  = priv;
1349         struct em28xx         *dev = fh->dev;
1350
1351         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1352         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1353         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1354
1355         cap->version = EM28XX_VERSION_CODE;
1356
1357         cap->capabilities =
1358                         V4L2_CAP_SLICED_VBI_CAPTURE |
1359                         V4L2_CAP_VIDEO_CAPTURE |
1360                         V4L2_CAP_AUDIO |
1361                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1362
1363         if (dev->tuner_type != TUNER_ABSENT)
1364                 cap->capabilities |= V4L2_CAP_TUNER;
1365
1366         return 0;
1367 }
1368
1369 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1370                                         struct v4l2_fmtdesc *f)
1371 {
1372         if (unlikely(f->index >= ARRAY_SIZE(format)))
1373                 return -EINVAL;
1374
1375         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1376         f->pixelformat = format[f->index].fourcc;
1377
1378         return 0;
1379 }
1380
1381 /* Sliced VBI ioctls */
1382 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1383                                         struct v4l2_format *f)
1384 {
1385         struct em28xx_fh      *fh  = priv;
1386         struct em28xx         *dev = fh->dev;
1387         int                   rc;
1388
1389         rc = check_dev(dev);
1390         if (rc < 0)
1391                 return rc;
1392
1393         mutex_lock(&dev->lock);
1394
1395         f->fmt.sliced.service_set = 0;
1396
1397         em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
1398
1399         if (f->fmt.sliced.service_set == 0)
1400                 rc = -EINVAL;
1401
1402         mutex_unlock(&dev->lock);
1403         return rc;
1404 }
1405
1406 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1407                         struct v4l2_format *f)
1408 {
1409         struct em28xx_fh      *fh  = priv;
1410         struct em28xx         *dev = fh->dev;
1411         int                   rc;
1412
1413         rc = check_dev(dev);
1414         if (rc < 0)
1415                 return rc;
1416
1417         mutex_lock(&dev->lock);
1418         em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f);
1419         mutex_unlock(&dev->lock);
1420
1421         if (f->fmt.sliced.service_set == 0)
1422                 return -EINVAL;
1423
1424         return 0;
1425 }
1426
1427
1428 static int vidioc_reqbufs(struct file *file, void *priv,
1429                           struct v4l2_requestbuffers *rb)
1430 {
1431         struct em28xx_fh      *fh  = priv;
1432         struct em28xx         *dev = fh->dev;
1433         int                   rc;
1434
1435         rc = check_dev(dev);
1436         if (rc < 0)
1437                 return rc;
1438
1439         return (videobuf_reqbufs(&fh->vb_vidq, rb));
1440 }
1441
1442 static int vidioc_querybuf(struct file *file, void *priv,
1443                            struct v4l2_buffer *b)
1444 {
1445         struct em28xx_fh      *fh  = priv;
1446         struct em28xx         *dev = fh->dev;
1447         int                   rc;
1448
1449         rc = check_dev(dev);
1450         if (rc < 0)
1451                 return rc;
1452
1453         return (videobuf_querybuf(&fh->vb_vidq, b));
1454 }
1455
1456 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1457 {
1458         struct em28xx_fh      *fh  = priv;
1459         struct em28xx         *dev = fh->dev;
1460         int                   rc;
1461
1462         rc = check_dev(dev);
1463         if (rc < 0)
1464                 return rc;
1465
1466         return (videobuf_qbuf(&fh->vb_vidq, b));
1467 }
1468
1469 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1470 {
1471         struct em28xx_fh      *fh  = priv;
1472         struct em28xx         *dev = fh->dev;
1473         int                   rc;
1474
1475         rc = check_dev(dev);
1476         if (rc < 0)
1477                 return rc;
1478
1479         return (videobuf_dqbuf(&fh->vb_vidq, b,
1480                                 file->f_flags & O_NONBLOCK));
1481 }
1482
1483 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1484 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1485 {
1486         struct em28xx_fh  *fh = priv;
1487
1488         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1489 }
1490 #endif
1491
1492
1493 /* ----------------------------------------------------------- */
1494 /* RADIO ESPECIFIC IOCTLS                                      */
1495 /* ----------------------------------------------------------- */
1496
1497 static int radio_querycap(struct file *file, void  *priv,
1498                           struct v4l2_capability *cap)
1499 {
1500         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1501
1502         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1503         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1504         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1505
1506         cap->version = EM28XX_VERSION_CODE;
1507         cap->capabilities = V4L2_CAP_TUNER;
1508         return 0;
1509 }
1510
1511 static int radio_g_tuner(struct file *file, void *priv,
1512                          struct v4l2_tuner *t)
1513 {
1514         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1515
1516         if (unlikely(t->index > 0))
1517                 return -EINVAL;
1518
1519         strcpy(t->name, "Radio");
1520         t->type = V4L2_TUNER_RADIO;
1521
1522         mutex_lock(&dev->lock);
1523         em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t);
1524         mutex_unlock(&dev->lock);
1525
1526         return 0;
1527 }
1528
1529 static int radio_enum_input(struct file *file, void *priv,
1530                             struct v4l2_input *i)
1531 {
1532         if (i->index != 0)
1533                 return -EINVAL;
1534         strcpy(i->name, "Radio");
1535         i->type = V4L2_INPUT_TYPE_TUNER;
1536
1537         return 0;
1538 }
1539
1540 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1541 {
1542         if (unlikely(a->index))
1543                 return -EINVAL;
1544
1545         strcpy(a->name, "Radio");
1546         return 0;
1547 }
1548
1549 static int radio_s_tuner(struct file *file, void *priv,
1550                          struct v4l2_tuner *t)
1551 {
1552         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1553
1554         if (0 != t->index)
1555                 return -EINVAL;
1556
1557         mutex_lock(&dev->lock);
1558         em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t);
1559         mutex_unlock(&dev->lock);
1560
1561         return 0;
1562 }
1563
1564 static int radio_s_audio(struct file *file, void *fh,
1565                          struct v4l2_audio *a)
1566 {
1567         return 0;
1568 }
1569
1570 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1571 {
1572         return 0;
1573 }
1574
1575 static int radio_queryctrl(struct file *file, void *priv,
1576                            struct v4l2_queryctrl *qc)
1577 {
1578         int i;
1579
1580         if (qc->id <  V4L2_CID_BASE ||
1581                 qc->id >= V4L2_CID_LASTP1)
1582                 return -EINVAL;
1583
1584         for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1585                 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1586                         memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1587                         return 0;
1588                 }
1589         }
1590
1591         return -EINVAL;
1592 }
1593
1594 /*
1595  * em28xx_v4l2_open()
1596  * inits the device and starts isoc transfer
1597  */
1598 static int em28xx_v4l2_open(struct file *filp)
1599 {
1600         int minor = video_devdata(filp)->minor;
1601         int errCode = 0, radio;
1602         struct em28xx *dev;
1603         enum v4l2_buf_type fh_type;
1604         struct em28xx_fh *fh;
1605
1606         dev = em28xx_get_device(minor, &fh_type, &radio);
1607
1608         if (NULL == dev)
1609                 return -ENODEV;
1610
1611         mutex_lock(&dev->lock);
1612
1613         em28xx_videodbg("open minor=%d type=%s users=%d\n",
1614                                 minor, v4l2_type_names[fh_type], dev->users);
1615
1616
1617         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1618         if (!fh) {
1619                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1620                 mutex_unlock(&dev->lock);
1621                 return -ENOMEM;
1622         }
1623         fh->dev = dev;
1624         fh->radio = radio;
1625         fh->type = fh_type;
1626         filp->private_data = fh;
1627
1628         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1629                 dev->width = norm_maxw(dev);
1630                 dev->height = norm_maxh(dev);
1631                 dev->hscale = 0;
1632                 dev->vscale = 0;
1633
1634                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1635                 em28xx_set_alternate(dev);
1636                 em28xx_resolution_set(dev);
1637
1638                 /* Needed, since GPIO might have disabled power of
1639                    some i2c device
1640                  */
1641                 em28xx_wake_i2c(dev);
1642
1643         }
1644         if (fh->radio) {
1645                 em28xx_videodbg("video_open: setting radio device\n");
1646                 em28xx_i2c_call_clients(dev, AUDC_SET_RADIO, NULL);
1647         }
1648
1649         dev->users++;
1650
1651         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1652                         NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
1653                         sizeof(struct em28xx_buffer), fh);
1654
1655         mutex_unlock(&dev->lock);
1656
1657         return errCode;
1658 }
1659
1660 /*
1661  * em28xx_realease_resources()
1662  * unregisters the v4l2,i2c and usb devices
1663  * called when the device gets disconected or at module unload
1664 */
1665 void em28xx_release_analog_resources(struct em28xx *dev)
1666 {
1667
1668         /*FIXME: I2C IR should be disconnected */
1669
1670         if (dev->radio_dev) {
1671                 if (-1 != dev->radio_dev->minor)
1672                         video_unregister_device(dev->radio_dev);
1673                 else
1674                         video_device_release(dev->radio_dev);
1675                 dev->radio_dev = NULL;
1676         }
1677         if (dev->vbi_dev) {
1678                 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1679                             dev->vbi_dev->num);
1680                 if (-1 != dev->vbi_dev->minor)
1681                         video_unregister_device(dev->vbi_dev);
1682                 else
1683                         video_device_release(dev->vbi_dev);
1684                 dev->vbi_dev = NULL;
1685         }
1686         if (dev->vdev) {
1687                 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1688                             dev->vdev->num);
1689                 if (-1 != dev->vdev->minor)
1690                         video_unregister_device(dev->vdev);
1691                 else
1692                         video_device_release(dev->vdev);
1693                 dev->vdev = NULL;
1694         }
1695 }
1696
1697 /*
1698  * em28xx_v4l2_close()
1699  * stops streaming and deallocates all resources allocated by the v4l2
1700  * calls and ioctls
1701  */
1702 static int em28xx_v4l2_close(struct file *filp)
1703 {
1704         struct em28xx_fh *fh  = filp->private_data;
1705         struct em28xx    *dev = fh->dev;
1706         int              errCode;
1707
1708         em28xx_videodbg("users=%d\n", dev->users);
1709
1710
1711         mutex_lock(&dev->lock);
1712         if (res_check(fh))
1713                 res_free(fh);
1714
1715         if (dev->users == 1) {
1716                 videobuf_stop(&fh->vb_vidq);
1717                 videobuf_mmap_free(&fh->vb_vidq);
1718
1719                 /* the device is already disconnect,
1720                    free the remaining resources */
1721                 if (dev->state & DEV_DISCONNECTED) {
1722                         em28xx_release_resources(dev);
1723                         mutex_unlock(&dev->lock);
1724                         kfree(dev);
1725                         return 0;
1726                 }
1727
1728                 /* Save some power by putting tuner to sleep */
1729                 em28xx_i2c_call_clients(dev, TUNER_SET_STANDBY, NULL);
1730
1731                 /* do this before setting alternate! */
1732                 em28xx_uninit_isoc(dev);
1733                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1734
1735                 /* set alternate 0 */
1736                 dev->alt = 0;
1737                 em28xx_videodbg("setting alternate 0\n");
1738                 errCode = usb_set_interface(dev->udev, 0, 0);
1739                 if (errCode < 0) {
1740                         em28xx_errdev("cannot change alternate number to "
1741                                         "0 (error=%i)\n", errCode);
1742                 }
1743         }
1744         kfree(fh);
1745         dev->users--;
1746         wake_up_interruptible_nr(&dev->open, 1);
1747         mutex_unlock(&dev->lock);
1748         return 0;
1749 }
1750
1751 /*
1752  * em28xx_v4l2_read()
1753  * will allocate buffers when called for the first time
1754  */
1755 static ssize_t
1756 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1757                  loff_t *pos)
1758 {
1759         struct em28xx_fh *fh = filp->private_data;
1760         struct em28xx *dev = fh->dev;
1761         int rc;
1762
1763         rc = check_dev(dev);
1764         if (rc < 0)
1765                 return rc;
1766
1767         /* FIXME: read() is not prepared to allow changing the video
1768            resolution while streaming. Seems a bug at em28xx_set_fmt
1769          */
1770
1771         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1772                 mutex_lock(&dev->lock);
1773                 rc = res_get(fh);
1774                 mutex_unlock(&dev->lock);
1775
1776                 if (unlikely(rc < 0))
1777                         return rc;
1778
1779                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1780                                         filp->f_flags & O_NONBLOCK);
1781         }
1782         return 0;
1783 }
1784
1785 /*
1786  * em28xx_v4l2_poll()
1787  * will allocate buffers when called for the first time
1788  */
1789 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
1790 {
1791         struct em28xx_fh *fh = filp->private_data;
1792         struct em28xx *dev = fh->dev;
1793         int rc;
1794
1795         rc = check_dev(dev);
1796         if (rc < 0)
1797                 return rc;
1798
1799         mutex_lock(&dev->lock);
1800         rc = res_get(fh);
1801         mutex_unlock(&dev->lock);
1802
1803         if (unlikely(rc < 0))
1804                 return POLLERR;
1805
1806         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1807                 return POLLERR;
1808
1809         return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1810 }
1811
1812 /*
1813  * em28xx_v4l2_mmap()
1814  */
1815 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1816 {
1817         struct em28xx_fh *fh    = filp->private_data;
1818         struct em28xx    *dev   = fh->dev;
1819         int              rc;
1820
1821         rc = check_dev(dev);
1822         if (rc < 0)
1823                 return rc;
1824
1825         mutex_lock(&dev->lock);
1826         rc = res_get(fh);
1827         mutex_unlock(&dev->lock);
1828
1829         if (unlikely(rc < 0))
1830                 return rc;
1831
1832         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1833
1834         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1835                 (unsigned long)vma->vm_start,
1836                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1837                 rc);
1838
1839         return rc;
1840 }
1841
1842 static const struct v4l2_file_operations em28xx_v4l_fops = {
1843         .owner         = THIS_MODULE,
1844         .open          = em28xx_v4l2_open,
1845         .release       = em28xx_v4l2_close,
1846         .read          = em28xx_v4l2_read,
1847         .poll          = em28xx_v4l2_poll,
1848         .mmap          = em28xx_v4l2_mmap,
1849         .ioctl         = video_ioctl2,
1850 };
1851
1852 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1853         .vidioc_querycap            = vidioc_querycap,
1854         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1855         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1856         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1857         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1858         .vidioc_g_audio             = vidioc_g_audio,
1859         .vidioc_s_audio             = vidioc_s_audio,
1860         .vidioc_cropcap             = vidioc_cropcap,
1861
1862         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
1863         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1864         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
1865
1866         .vidioc_reqbufs             = vidioc_reqbufs,
1867         .vidioc_querybuf            = vidioc_querybuf,
1868         .vidioc_qbuf                = vidioc_qbuf,
1869         .vidioc_dqbuf               = vidioc_dqbuf,
1870         .vidioc_s_std               = vidioc_s_std,
1871         .vidioc_enum_input          = vidioc_enum_input,
1872         .vidioc_g_input             = vidioc_g_input,
1873         .vidioc_s_input             = vidioc_s_input,
1874         .vidioc_queryctrl           = vidioc_queryctrl,
1875         .vidioc_g_ctrl              = vidioc_g_ctrl,
1876         .vidioc_s_ctrl              = vidioc_s_ctrl,
1877         .vidioc_streamon            = vidioc_streamon,
1878         .vidioc_streamoff           = vidioc_streamoff,
1879         .vidioc_g_tuner             = vidioc_g_tuner,
1880         .vidioc_s_tuner             = vidioc_s_tuner,
1881         .vidioc_g_frequency         = vidioc_g_frequency,
1882         .vidioc_s_frequency         = vidioc_s_frequency,
1883 #ifdef CONFIG_VIDEO_ADV_DEBUG
1884         .vidioc_g_register          = vidioc_g_register,
1885         .vidioc_s_register          = vidioc_s_register,
1886         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
1887 #endif
1888 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1889         .vidiocgmbuf                = vidiocgmbuf,
1890 #endif
1891 };
1892
1893 static const struct video_device em28xx_video_template = {
1894         .fops                       = &em28xx_v4l_fops,
1895         .release                    = video_device_release,
1896         .ioctl_ops                  = &video_ioctl_ops,
1897
1898         .minor                      = -1,
1899
1900         .tvnorms                    = V4L2_STD_ALL,
1901         .current_norm               = V4L2_STD_PAL,
1902 };
1903
1904 static const struct v4l2_file_operations radio_fops = {
1905         .owner         = THIS_MODULE,
1906         .open          = em28xx_v4l2_open,
1907         .release       = em28xx_v4l2_close,
1908         .ioctl         = video_ioctl2,
1909 };
1910
1911 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1912         .vidioc_querycap      = radio_querycap,
1913         .vidioc_g_tuner       = radio_g_tuner,
1914         .vidioc_enum_input    = radio_enum_input,
1915         .vidioc_g_audio       = radio_g_audio,
1916         .vidioc_s_tuner       = radio_s_tuner,
1917         .vidioc_s_audio       = radio_s_audio,
1918         .vidioc_s_input       = radio_s_input,
1919         .vidioc_queryctrl     = radio_queryctrl,
1920         .vidioc_g_ctrl        = vidioc_g_ctrl,
1921         .vidioc_s_ctrl        = vidioc_s_ctrl,
1922         .vidioc_g_frequency   = vidioc_g_frequency,
1923         .vidioc_s_frequency   = vidioc_s_frequency,
1924 #ifdef CONFIG_VIDEO_ADV_DEBUG
1925         .vidioc_g_register    = vidioc_g_register,
1926         .vidioc_s_register    = vidioc_s_register,
1927 #endif
1928 };
1929
1930 static struct video_device em28xx_radio_template = {
1931         .name                 = "em28xx-radio",
1932         .fops                 = &radio_fops,
1933         .ioctl_ops            = &radio_ioctl_ops,
1934         .minor                = -1,
1935 };
1936
1937 /******************************** usb interface ******************************/
1938
1939
1940
1941 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1942                                              const struct video_device *template,
1943                                              const char *type_name)
1944 {
1945         struct video_device *vfd;
1946
1947         vfd = video_device_alloc();
1948         if (NULL == vfd)
1949                 return NULL;
1950         *vfd = *template;
1951         vfd->minor   = -1;
1952         vfd->parent = &dev->udev->dev;
1953         vfd->release = video_device_release;
1954         vfd->debug = video_debug;
1955
1956         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1957                  dev->name, type_name);
1958
1959         return vfd;
1960 }
1961
1962 int em28xx_register_analog_devices(struct em28xx *dev)
1963 {
1964       u8 val;
1965         int ret;
1966
1967         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
1968                 dev->name,
1969                 (EM28XX_VERSION_CODE >> 16) & 0xff,
1970                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
1971
1972         /* set default norm */
1973         dev->norm = em28xx_video_template.current_norm;
1974         dev->width = norm_maxw(dev);
1975         dev->height = norm_maxh(dev);
1976         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1977         dev->hscale = 0;
1978         dev->vscale = 0;
1979         dev->ctl_input = 0;
1980
1981         /* Analog specific initialization */
1982         dev->format = &format[0];
1983         video_mux(dev, dev->ctl_input);
1984
1985         /* Audio defaults */
1986         dev->mute = 1;
1987         dev->volume = 0x1f;
1988
1989         /* enable vbi capturing */
1990
1991 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
1992        val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
1993        em28xx_write_reg(dev, EM28XX_R0F_XCLK, (EM28XX_XCLK_AUDIO_UNMUTE | val));
1994         em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
1995
1996         em28xx_set_outfmt(dev);
1997         em28xx_colorlevels_set_default(dev);
1998         em28xx_compression_disable(dev);
1999
2000         /* allocate and fill video video_device struct */
2001         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2002         if (!dev->vdev) {
2003                 em28xx_errdev("cannot allocate video_device.\n");
2004                 return -ENODEV;
2005         }
2006
2007         /* register v4l2 video video_device */
2008         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2009                                        video_nr[dev->devno]);
2010         if (ret) {
2011                 em28xx_errdev("unable to register video device (error=%i).\n",
2012                               ret);
2013                 return ret;
2014         }
2015
2016         /* Allocate and fill vbi video_device struct */
2017         dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2018
2019         /* register v4l2 vbi video_device */
2020         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2021                                         vbi_nr[dev->devno]);
2022         if (ret < 0) {
2023                 em28xx_errdev("unable to register vbi device\n");
2024                 return ret;
2025         }
2026
2027         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2028                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, "radio");
2029                 if (!dev->radio_dev) {
2030                         em28xx_errdev("cannot allocate video_device.\n");
2031                         return -ENODEV;
2032                 }
2033                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2034                                             radio_nr[dev->devno]);
2035                 if (ret < 0) {
2036                         em28xx_errdev("can't register radio device\n");
2037                         return ret;
2038                 }
2039                 em28xx_info("Registered radio device as /dev/radio%d\n",
2040                             dev->radio_dev->num);
2041         }
2042
2043         em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2044                                 dev->vdev->num, dev->vbi_dev->num);
2045
2046         return 0;
2047 }