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

   1 /*
   2    em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
   3                     video capture devices
   4
   5    Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
   6                       Markus Rechberger <mrechberger@gmail.com>
   7                       Mauro Carvalho Chehab <mchehab@infradead.org>
   8                       Sascha Sommer <saschasommer@freenet.de>
   9
  10         Some parts based on SN9C10x PC Camera Controllers GPL driver made
  11                 by Luca Risolia <luca.risolia@studio.unibo.it>
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 2 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27
  28 #include <linux/init.h>
  29 #include <linux/list.h>
  30 #include <linux/module.h>
  31 #include <linux/kernel.h>
  32 #include <linux/bitmap.h>
  33 #include <linux/usb.h>
  34 #include <linux/i2c.h>
  35 #include <linux/version.h>
  36 #include <linux/mm.h>
  37 #include <linux/mutex.h>
  38
  39 #include "em28xx.h"
  40 #include <media/v4l2-common.h>
  41 #include <media/v4l2-ioctl.h>
  42 #include <media/v4l2-chip-ident.h>
  43 #include <media/msp3400.h>
  44 #include <media/tuner.h>
  45
  46 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
  47                       "Markus Rechberger <mrechberger@gmail.com>, " \
  48                       "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
  49                       "Sascha Sommer <saschasommer@freenet.de>"
  50
  51 #define DRIVER_DESC         "Empia em28xx based USB video device driver"
  52 #define EM28XX_VERSION_CODE  KERNEL_VERSION(0, 1, 2)
  53
  54 #define em28xx_videodbg(fmt, arg...) do {\
  55         if (video_debug) \
  56                 printk(KERN_INFO "%s %s :"fmt, \
  57                          dev->name, __func__ , ##arg); } while (0)
  58
  59 static unsigned int isoc_debug;
  60 module_param(isoc_debug, int, 0644);
  61 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  62
  63 #define em28xx_isocdbg(fmt, arg...) \
  64 do {\
  65         if (isoc_debug) { \
  66                 printk(KERN_INFO "%s %s :"fmt, \
  67                          dev->name, __func__ , ##arg); \
  68         } \
  69   } while (0)
  70
  71 MODULE_AUTHOR(DRIVER_AUTHOR);
  72 MODULE_DESCRIPTION(DRIVER_DESC);
  73 MODULE_LICENSE("GPL");
  74
  75 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  76 static unsigned int vbi_nr[]   = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  77 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  78
  79 module_param_array(video_nr, int, NULL, 0444);
  80 module_param_array(vbi_nr, int, NULL, 0444);
  81 module_param_array(radio_nr, int, NULL, 0444);
  82 MODULE_PARM_DESC(video_nr, "video device numbers");
  83 MODULE_PARM_DESC(vbi_nr,   "vbi device numbers");
  84 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  85
  86 static unsigned int video_debug;
  87 module_param(video_debug, int, 0644);
  88 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  89
  90 /* supported video standards */
  91 static struct em28xx_fmt format[] = {
  92         {
  93                 .name     = "16 bpp YUY2, 4:2:2, packed",
  94                 .fourcc   = V4L2_PIX_FMT_YUYV,
  95                 .depth    = 16,
  96                 .reg      = EM28XX_OUTFMT_YUV422_Y0UY1V,
  97         }, {
  98                 .name     = "16 bpp RGB 565, LE",
  99                 .fourcc   = V4L2_PIX_FMT_RGB565,
 100                 .depth    = 16,
 101                 .reg      = EM28XX_OUTFMT_RGB_16_656,
 102         }, {
 103                 .name     = "8 bpp Bayer BGBG..GRGR",
 104                 .fourcc   = V4L2_PIX_FMT_SBGGR8,
 105                 .depth    = 8,
 106                 .reg      = EM28XX_OUTFMT_RGB_8_BGBG,
 107         }, {
 108                 .name     = "8 bpp Bayer GRGR..BGBG",
 109                 .fourcc   = V4L2_PIX_FMT_SGRBG8,
 110                 .depth    = 8,
 111                 .reg      = EM28XX_OUTFMT_RGB_8_GRGR,
 112         }, {
 113                 .name     = "8 bpp Bayer GBGB..RGRG",
 114                 .fourcc   = V4L2_PIX_FMT_SGBRG8,
 115                 .depth    = 8,
 116                 .reg      = EM28XX_OUTFMT_RGB_8_GBGB,
 117         }, {
 118                 .name     = "12 bpp YUV411",
 119                 .fourcc   = V4L2_PIX_FMT_YUV411P,
 120                 .depth    = 12,
 121                 .reg      = EM28XX_OUTFMT_YUV411,
 122         },
 123 };
 124
 125 /* supported controls */
 126 /* Common to all boards */
 127 static struct v4l2_queryctrl em28xx_qctrl[] = {
 128         {
 129                 .id = V4L2_CID_AUDIO_VOLUME,
 130                 .type = V4L2_CTRL_TYPE_INTEGER,
 131                 .name = "Volume",
 132                 .minimum = 0x0,
 133                 .maximum = 0x1f,
 134                 .step = 0x1,
 135                 .default_value = 0x1f,
 136                 .flags = 0,
 137         }, {
 138                 .id = V4L2_CID_AUDIO_MUTE,
 139                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 140                 .name = "Mute",
 141                 .minimum = 0,
 142                 .maximum = 1,
 143                 .step = 1,
 144                 .default_value = 1,
 145                 .flags = 0,
 146         }
 147 };
 148
 149 /* ------------------------------------------------------------------
 150         DMA and thread functions
 151    ------------------------------------------------------------------*/
 152
 153 /*
 154  * Announces that a buffer were filled and request the next
 155  */
 156 static inline void buffer_filled(struct em28xx *dev,
 157                                   struct em28xx_dmaqueue *dma_q,
 158                                   struct em28xx_buffer *buf)
 159 {
 160         /* Advice that buffer was filled */
 161         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 162         buf->vb.state = VIDEOBUF_DONE;
 163         buf->vb.field_count++;
 164         do_gettimeofday(&buf->vb.ts);
 165
 166         dev->isoc_ctl.buf = NULL;
 167
 168         list_del(&buf->vb.queue);
 169         wake_up(&buf->vb.done);
 170 }
 171
 172 /*
 173  * Identify the buffer header type and properly handles
 174  */
 175 static void em28xx_copy_video(struct em28xx *dev,
 176                               struct em28xx_dmaqueue  *dma_q,
 177                               struct em28xx_buffer *buf,
 178                               unsigned char *p,
 179                               unsigned char *outp, unsigned long len)
 180 {
 181         void *fieldstart, *startwrite, *startread;
 182         int  linesdone, currlinedone, offset, lencopy, remain;
 183         int bytesperline = dev->width << 1;
 184
 185         if (dma_q->pos + len > buf->vb.size)
 186                 len = buf->vb.size - dma_q->pos;
 187
 188         if (p[0] != 0x88 && p[0] != 0x22) {
 189                 em28xx_isocdbg("frame is not complete\n");
 190                 len += 4;
 191         } else
 192                 p += 4;
 193
 194         startread = p;
 195         remain = len;
 196
 197         if (dev->progressive)
 198                 fieldstart = outp;
 199         else {
 200                 /* Interlaces two half frames */
 201                 if (buf->top_field)
 202                         fieldstart = outp;
 203                 else
 204                         fieldstart = outp + bytesperline;
 205         }
 206
 207         linesdone = dma_q->pos / bytesperline;
 208         currlinedone = dma_q->pos % bytesperline;
 209
 210         if (dev->progressive)
 211                 offset = linesdone * bytesperline + currlinedone;
 212         else
 213                 offset = linesdone * bytesperline * 2 + currlinedone;
 214
 215         startwrite = fieldstart + offset;
 216         lencopy = bytesperline - currlinedone;
 217         lencopy = lencopy > remain ? remain : lencopy;
 218
 219         if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
 220                 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 221                                ((char *)startwrite + lencopy) -
 222                                ((char *)outp + buf->vb.size));
 223                 remain = (char *)outp + buf->vb.size - (char *)startwrite;
 224                 lencopy = remain;
 225         }
 226         if (lencopy <= 0)
 227                 return;
 228         memcpy(startwrite, startread, lencopy);
 229
 230         remain -= lencopy;
 231
 232         while (remain > 0) {
 233                 startwrite += lencopy + bytesperline;
 234                 startread += lencopy;
 235                 if (bytesperline > remain)
 236                         lencopy = remain;
 237                 else
 238                         lencopy = bytesperline;
 239
 240                 if ((char *)startwrite + lencopy > (char *)outp +
 241                     buf->vb.size) {
 242                         em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
 243                                        ((char *)startwrite + lencopy) -
 244                                        ((char *)outp + buf->vb.size));
 245                         lencopy = remain = (char *)outp + buf->vb.size -
 246                                            (char *)startwrite;
 247                 }
 248                 if (lencopy <= 0)
 249                         break;
 250
 251                 memcpy(startwrite, startread, lencopy);
 252
 253                 remain -= lencopy;
 254         }
 255
 256         dma_q->pos += len;
 257 }
 258
 259 static inline void print_err_status(struct em28xx *dev,
 260                                      int packet, int status)
 261 {
 262         char *errmsg = "Unknown";
 263
 264         switch (status) {
 265         case -ENOENT:
 266                 errmsg = "unlinked synchronuously";
 267                 break;
 268         case -ECONNRESET:
 269                 errmsg = "unlinked asynchronuously";
 270                 break;
 271         case -ENOSR:
 272                 errmsg = "Buffer error (overrun)";
 273                 break;
 274         case -EPIPE:
 275                 errmsg = "Stalled (device not responding)";
 276                 break;
 277         case -EOVERFLOW:
 278                 errmsg = "Babble (bad cable?)";
 279                 break;
 280         case -EPROTO:
 281                 errmsg = "Bit-stuff error (bad cable?)";
 282                 break;
 283         case -EILSEQ:
 284                 errmsg = "CRC/Timeout (could be anything)";
 285                 break;
 286         case -ETIME:
 287                 errmsg = "Device does not respond";
 288                 break;
 289         }
 290         if (packet < 0) {
 291                 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 292         } else {
 293                 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
 294                                packet, status, errmsg);
 295         }
 296 }
 297
 298 /*
 299  * video-buf generic routine to get the next available buffer
 300  */
 301 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
 302                                           struct em28xx_buffer **buf)
 303 {
 304         struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
 305         char *outp;
 306
 307         if (list_empty(&dma_q->active)) {
 308                 em28xx_isocdbg("No active queue to serve\n");
 309                 dev->isoc_ctl.buf = NULL;
 310                 *buf = NULL;
 311                 return;
 312         }
 313
 314         /* Get the next buffer */
 315         *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
 316
 317         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 318         outp = videobuf_to_vmalloc(&(*buf)->vb);
 319         memset(outp, 0, (*buf)->vb.size);
 320
 321         dev->isoc_ctl.buf = *buf;
 322
 323         return;
 324 }
 325
 326 /*
 327  * Controls the isoc copy of each urb packet
 328  */
 329 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
 330 {
 331         struct em28xx_buffer    *buf;
 332         struct em28xx_dmaqueue  *dma_q = urb->context;
 333         unsigned char *outp = NULL;
 334         int i, len = 0, rc = 1;
 335         unsigned char *p;
 336
 337         if (!dev)
 338                 return 0;
 339
 340         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 341                 return 0;
 342
 343         if (urb->status < 0) {
 344                 print_err_status(dev, -1, urb->status);
 345                 if (urb->status == -ENOENT)
 346                         return 0;
 347         }
 348
 349         buf = dev->isoc_ctl.buf;
 350         if (buf != NULL)
 351                 outp = videobuf_to_vmalloc(&buf->vb);
 352
 353         for (i = 0; i < urb->number_of_packets; i++) {
 354                 int status = urb->iso_frame_desc[i].status;
 355
 356                 if (status < 0) {
 357                         print_err_status(dev, i, status);
 358                         if (urb->iso_frame_desc[i].status != -EPROTO)
 359                                 continue;
 360                 }
 361
 362                 len = urb->iso_frame_desc[i].actual_length - 4;
 363
 364                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 365                         /* em28xx_isocdbg("packet %d is empty",i); - spammy */
 366                         continue;
 367                 }
 368                 if (urb->iso_frame_desc[i].actual_length >
 369                                                 dev->max_pkt_size) {
 370                         em28xx_isocdbg("packet bigger than packet size");
 371                         continue;
 372                 }
 373
 374                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 375
 376                 /* FIXME: incomplete buffer checks where removed to make
 377                    logic simpler. Impacts of those changes should be evaluated
 378                  */
 379                 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
 380                         em28xx_isocdbg("VBI HEADER!!!\n");
 381                         /* FIXME: Should add vbi copy */
 382                         continue;
 383                 }
 384                 if (p[0] == 0x22 && p[1] == 0x5a) {
 385                         em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
 386                                        len, (p[2] & 1) ? "odd" : "even");
 387
 388                         if (dev->progressive || !(p[2] & 1)) {
 389                                 if (buf != NULL)
 390                                         buffer_filled(dev, dma_q, buf);
 391                                 get_next_buf(dma_q, &buf);
 392                                 if (buf == NULL)
 393                                         outp = NULL;
 394                                 else
 395                                         outp = videobuf_to_vmalloc(&buf->vb);
 396                         }
 397
 398                         if (buf != NULL) {
 399                                 if (p[2] & 1)
 400                                         buf->top_field = 0;
 401                                 else
 402                                         buf->top_field = 1;
 403                         }
 404
 405                         dma_q->pos = 0;
 406                 }
 407                 if (buf != NULL)
 408                         em28xx_copy_video(dev, dma_q, buf, p, outp, len);
 409         }
 410         return rc;
 411 }
 412
 413 /* ------------------------------------------------------------------
 414         Videobuf operations
 415    ------------------------------------------------------------------*/
 416
 417 static int
 418 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 419 {
 420         struct em28xx_fh *fh = vq->priv_data;
 421         struct em28xx        *dev = fh->dev;
 422         struct v4l2_frequency f;
 423
 424         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
 425
 426         if (0 == *count)
 427                 *count = EM28XX_DEF_BUF;
 428
 429         if (*count < EM28XX_MIN_BUF)
 430                 *count = EM28XX_MIN_BUF;
 431
 432         /* Ask tuner to go to analog or radio mode */
 433         memset(&f, 0, sizeof(f));
 434         f.frequency = dev->ctl_freq;
 435         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 436
 437         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
 438
 439         return 0;
 440 }
 441
 442 /* This is called *without* dev->slock held; please keep it that way */
 443 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
 444 {
 445         struct em28xx_fh     *fh  = vq->priv_data;
 446         struct em28xx        *dev = fh->dev;
 447         unsigned long flags = 0;
 448         if (in_interrupt())
 449                 BUG();
 450
 451         /* We used to wait for the buffer to finish here, but this didn't work
 452            because, as we were keeping the state as VIDEOBUF_QUEUED,
 453            videobuf_queue_cancel marked it as finished for us.
 454            (Also, it could wedge forever if the hardware was misconfigured.)
 455
 456            This should be safe; by the time we get here, the buffer isn't
 457            queued anymore. If we ever start marking the buffers as
 458            VIDEOBUF_ACTIVE, it won't be, though.
 459         */
 460         spin_lock_irqsave(&dev->slock, flags);
 461         if (dev->isoc_ctl.buf == buf)
 462                 dev->isoc_ctl.buf = NULL;
 463         spin_unlock_irqrestore(&dev->slock, flags);
 464
 465         videobuf_vmalloc_free(&buf->vb);
 466         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 467 }
 468
 469 static int
 470 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 471                                                 enum v4l2_field field)
 472 {
 473         struct em28xx_fh     *fh  = vq->priv_data;
 474         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 475         struct em28xx        *dev = fh->dev;
 476         int                  rc = 0, urb_init = 0;
 477
 478         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3;
 479
 480         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 481                 return -EINVAL;
 482
 483         buf->vb.width  = dev->width;
 484         buf->vb.height = dev->height;
 485         buf->vb.field  = field;
 486
 487         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 488                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 489                 if (rc < 0)
 490                         goto fail;
 491         }
 492
 493         if (!dev->isoc_ctl.num_bufs)
 494                 urb_init = 1;
 495
 496         if (urb_init) {
 497                 rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
 498                                       EM28XX_NUM_BUFS, dev->max_pkt_size,
 499                                       em28xx_isoc_copy);
 500                 if (rc < 0)
 501                         goto fail;
 502         }
 503
 504         buf->vb.state = VIDEOBUF_PREPARED;
 505         return 0;
 506
 507 fail:
 508         free_buffer(vq, buf);
 509         return rc;
 510 }
 511
 512 static void
 513 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 514 {
 515         struct em28xx_buffer    *buf     = container_of(vb,
 516                                                         struct em28xx_buffer,
 517                                                         vb);
 518         struct em28xx_fh        *fh      = vq->priv_data;
 519         struct em28xx           *dev     = fh->dev;
 520         struct em28xx_dmaqueue  *vidq    = &dev->vidq;
 521
 522         buf->vb.state = VIDEOBUF_QUEUED;
 523         list_add_tail(&buf->vb.queue, &vidq->active);
 524
 525 }
 526
 527 static void buffer_release(struct videobuf_queue *vq,
 528                                 struct videobuf_buffer *vb)
 529 {
 530         struct em28xx_buffer   *buf  = container_of(vb,
 531                                                     struct em28xx_buffer,
 532                                                     vb);
 533         struct em28xx_fh       *fh   = vq->priv_data;
 534         struct em28xx          *dev  = (struct em28xx *)fh->dev;
 535
 536         em28xx_isocdbg("em28xx: called buffer_release\n");
 537
 538         free_buffer(vq, buf);
 539 }
 540
 541 static struct videobuf_queue_ops em28xx_video_qops = {
 542         .buf_setup      = buffer_setup,
 543         .buf_prepare    = buffer_prepare,
 544         .buf_queue      = buffer_queue,
 545         .buf_release    = buffer_release,
 546 };
 547
 548 /*********************  v4l2 interface  **************************************/
 549
 550 static void video_mux(struct em28xx *dev, int index)
 551 {
 552         dev->ctl_input = index;
 553         dev->ctl_ainput = INPUT(index)->amux;
 554         dev->ctl_aoutput = INPUT(index)->aout;
 555
 556         if (!dev->ctl_aoutput)
 557                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 558
 559         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
 560                         INPUT(index)->vmux, 0, 0);
 561
 562         if (dev->board.has_msp34xx) {
 563                 if (dev->i2s_speed) {
 564                         v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
 565                                 s_i2s_clock_freq, dev->i2s_speed);
 566                 }
 567                 /* Note: this is msp3400 specific */
 568                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 569                          dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
 570         }
 571
 572         if (dev->board.adecoder != EM28XX_NOADECODER) {
 573                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 574                         dev->ctl_ainput, dev->ctl_aoutput, 0);
 575         }
 576
 577         em28xx_audio_analog_set(dev);
 578 }
 579
 580 /* Usage lock check functions */
 581 static int res_get(struct em28xx_fh *fh)
 582 {
 583         struct em28xx    *dev = fh->dev;
 584         int              rc   = 0;
 585
 586         /* This instance already has stream_on */
 587         if (fh->stream_on)
 588                 return rc;
 589
 590         if (dev->stream_on)
 591                 return -EBUSY;
 592
 593         dev->stream_on = 1;
 594         fh->stream_on  = 1;
 595         return rc;
 596 }
 597
 598 static int res_check(struct em28xx_fh *fh)
 599 {
 600         return fh->stream_on;
 601 }
 602
 603 static void res_free(struct em28xx_fh *fh)
 604 {
 605         struct em28xx    *dev = fh->dev;
 606
 607         fh->stream_on = 0;
 608         dev->stream_on = 0;
 609 }
 610
 611 /*
 612  * em28xx_get_ctrl()
 613  * return the current saturation, brightness or contrast, mute state
 614  */
 615 static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
 616 {
 617         switch (ctrl->id) {
 618         case V4L2_CID_AUDIO_MUTE:
 619                 ctrl->value = dev->mute;
 620                 return 0;
 621         case V4L2_CID_AUDIO_VOLUME:
 622                 ctrl->value = dev->volume;
 623                 return 0;
 624         default:
 625                 return -EINVAL;
 626         }
 627 }
 628
 629 /*
 630  * em28xx_set_ctrl()
 631  * mute or set new saturation, brightness or contrast
 632  */
 633 static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
 634 {
 635         switch (ctrl->id) {
 636         case V4L2_CID_AUDIO_MUTE:
 637                 if (ctrl->value != dev->mute) {
 638                         dev->mute = ctrl->value;
 639                         return em28xx_audio_analog_set(dev);
 640                 }
 641                 return 0;
 642         case V4L2_CID_AUDIO_VOLUME:
 643                 dev->volume = ctrl->value;
 644                 return em28xx_audio_analog_set(dev);
 645         default:
 646                 return -EINVAL;
 647         }
 648 }
 649
 650 static int check_dev(struct em28xx *dev)
 651 {
 652         if (dev->state & DEV_DISCONNECTED) {
 653                 em28xx_errdev("v4l2 ioctl: device not present\n");
 654                 return -ENODEV;
 655         }
 656
 657         if (dev->state & DEV_MISCONFIGURED) {
 658                 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
 659                               "close and open it again\n");
 660                 return -EIO;
 661         }
 662         return 0;
 663 }
 664
 665 static void get_scale(struct em28xx *dev,
 666                         unsigned int width, unsigned int height,
 667                         unsigned int *hscale, unsigned int *vscale)
 668 {
 669         unsigned int          maxw = norm_maxw(dev);
 670         unsigned int          maxh = norm_maxh(dev);
 671
 672         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 673         if (*hscale >= 0x4000)
 674                 *hscale = 0x3fff;
 675
 676         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 677         if (*vscale >= 0x4000)
 678                 *vscale = 0x3fff;
 679 }
 680
 681 /* ------------------------------------------------------------------
 682         IOCTL vidioc handling
 683    ------------------------------------------------------------------*/
 684
 685 static int vidioc_g_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
 691         mutex_lock(&dev->lock);
 692
 693         f->fmt.pix.width = dev->width;
 694         f->fmt.pix.height = dev->height;
 695         f->fmt.pix.pixelformat = dev->format->fourcc;
 696         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 697         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
 698         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 699
 700         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
 701         if (dev->progressive)
 702                 f->fmt.pix.field = V4L2_FIELD_NONE;
 703         else
 704                 f->fmt.pix.field = dev->interlaced ?
 705                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 706
 707         mutex_unlock(&dev->lock);
 708         return 0;
 709 }
 710
 711 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
 712 {
 713         unsigned int i;
 714
 715         for (i = 0; i < ARRAY_SIZE(format); i++)
 716                 if (format[i].fourcc == fourcc)
 717                         return &format[i];
 718
 719         return NULL;
 720 }
 721
 722 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 723                         struct v4l2_format *f)
 724 {
 725         struct em28xx_fh      *fh    = priv;
 726         struct em28xx         *dev   = fh->dev;
 727         unsigned int          width  = f->fmt.pix.width;
 728         unsigned int          height = f->fmt.pix.height;
 729         unsigned int          maxw   = norm_maxw(dev);
 730         unsigned int          maxh   = norm_maxh(dev);
 731         unsigned int          hscale, vscale;
 732         struct em28xx_fmt     *fmt;
 733
 734         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 735         if (!fmt) {
 736                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
 737                                 f->fmt.pix.pixelformat);
 738                 return -EINVAL;
 739         }
 740
 741         if (dev->board.is_em2800) {
 742                 /* the em2800 can only scale down to 50% */
 743                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
 744                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
 745                 /* According to empiatech support the MaxPacketSize is too small
 746                  * to support framesizes larger than 640x480 @ 30 fps or 640x576
 747                  * @ 25 fps.  As this would cut of a part of the image we prefer
 748                  * 360x576 or 360x480 for now */
 749                 if (width == maxw && height == maxh)
 750                         width /= 2;
 751         } else {
 752                 /* width must even because of the YUYV format
 753                    height must be even because of interlacing */
 754                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 755         }
 756
 757         get_scale(dev, width, height, &hscale, &vscale);
 758
 759         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 760         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 761
 762         f->fmt.pix.width = width;
 763         f->fmt.pix.height = height;
 764         f->fmt.pix.pixelformat = fmt->fourcc;
 765         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 766         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 767         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 768         if (dev->progressive)
 769                 f->fmt.pix.field = V4L2_FIELD_NONE;
 770         else
 771                 f->fmt.pix.field = dev->interlaced ?
 772                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 773
 774         return 0;
 775 }
 776
 777 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
 778                                    unsigned width, unsigned height)
 779 {
 780         struct em28xx_fmt     *fmt;
 781
 782         fmt = format_by_fourcc(fourcc);
 783         if (!fmt)
 784                 return -EINVAL;
 785
 786         dev->format = fmt;
 787         dev->width  = width;
 788         dev->height = height;
 789
 790         /* set new image size */
 791         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 792
 793         em28xx_set_alternate(dev);
 794         em28xx_resolution_set(dev);
 795
 796         return 0;
 797 }
 798
 799 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 800                         struct v4l2_format *f)
 801 {
 802         struct em28xx_fh      *fh  = priv;
 803         struct em28xx         *dev = fh->dev;
 804         int                   rc;
 805
 806         rc = check_dev(dev);
 807         if (rc < 0)
 808                 return rc;
 809
 810         mutex_lock(&dev->lock);
 811
 812         vidioc_try_fmt_vid_cap(file, priv, f);
 813
 814         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 815                 em28xx_errdev("%s queue busy\n", __func__);
 816                 rc = -EBUSY;
 817                 goto out;
 818         }
 819
 820         if (dev->stream_on && !fh->stream_on) {
 821                 em28xx_errdev("%s device in use by another fh\n", __func__);
 822                 rc = -EBUSY;
 823                 goto out;
 824         }
 825
 826         rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
 827                                 f->fmt.pix.width, f->fmt.pix.height);
 828
 829 out:
 830         mutex_unlock(&dev->lock);
 831         return rc;
 832 }
 833
 834 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
 835 {
 836         struct em28xx_fh   *fh  = priv;
 837         struct em28xx      *dev = fh->dev;
 838         struct v4l2_format f;
 839         int                rc;
 840
 841         rc = check_dev(dev);
 842         if (rc < 0)
 843                 return rc;
 844
 845         mutex_lock(&dev->lock);
 846         dev->norm = *norm;
 847
 848         /* Adjusts width/height, if needed */
 849         f.fmt.pix.width = dev->width;
 850         f.fmt.pix.height = dev->height;
 851         vidioc_try_fmt_vid_cap(file, priv, &f);
 852
 853         /* set new image size */
 854         dev->width = f.fmt.pix.width;
 855         dev->height = f.fmt.pix.height;
 856         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 857
 858         em28xx_resolution_set(dev);
 859         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
 860
 861         mutex_unlock(&dev->lock);
 862         return 0;
 863 }
 864
 865 static int vidioc_g_parm(struct file *file, void *priv,
 866                          struct v4l2_streamparm *p)
 867 {
 868         struct em28xx_fh   *fh  = priv;
 869         struct em28xx      *dev = fh->dev;
 870         int rc = 0;
 871
 872         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 873                 return -EINVAL;
 874
 875         if (dev->board.is_webcam)
 876                 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
 877                                                 video, g_parm, p);
 878         else
 879                 v4l2_video_std_frame_period(dev->norm,
 880                                                  &p->parm.capture.timeperframe);
 881
 882         return rc;
 883 }
 884
 885 static int vidioc_s_parm(struct file *file, void *priv,
 886                          struct v4l2_streamparm *p)
 887 {
 888         struct em28xx_fh   *fh  = priv;
 889         struct em28xx      *dev = fh->dev;
 890
 891         if (!dev->board.is_webcam)
 892                 return -EINVAL;
 893
 894         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 895                 return -EINVAL;
 896
 897         return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
 898 }
 899
 900 static const char *iname[] = {
 901         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
 902         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
 903         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
 904         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
 905         [EM28XX_VMUX_SVIDEO]     = "S-Video",
 906         [EM28XX_VMUX_TELEVISION] = "Television",
 907         [EM28XX_VMUX_CABLE]      = "Cable TV",
 908         [EM28XX_VMUX_DVB]        = "DVB",
 909         [EM28XX_VMUX_DEBUG]      = "for debug only",
 910 };
 911
 912 static int vidioc_enum_input(struct file *file, void *priv,
 913                                 struct v4l2_input *i)
 914 {
 915         struct em28xx_fh   *fh  = priv;
 916         struct em28xx      *dev = fh->dev;
 917         unsigned int       n;
 918
 919         n = i->index;
 920         if (n >= MAX_EM28XX_INPUT)
 921                 return -EINVAL;
 922         if (0 == INPUT(n)->type)
 923                 return -EINVAL;
 924
 925         i->index = n;
 926         i->type = V4L2_INPUT_TYPE_CAMERA;
 927
 928         strcpy(i->name, iname[INPUT(n)->type]);
 929
 930         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
 931                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
 932                 i->type = V4L2_INPUT_TYPE_TUNER;
 933
 934         i->std = dev->vdev->tvnorms;
 935
 936         return 0;
 937 }
 938
 939 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 940 {
 941         struct em28xx_fh   *fh  = priv;
 942         struct em28xx      *dev = fh->dev;
 943
 944         *i = dev->ctl_input;
 945
 946         return 0;
 947 }
 948
 949 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
 950 {
 951         struct em28xx_fh   *fh  = priv;
 952         struct em28xx      *dev = fh->dev;
 953         int                rc;
 954
 955         rc = check_dev(dev);
 956         if (rc < 0)
 957                 return rc;
 958
 959         if (i >= MAX_EM28XX_INPUT)
 960                 return -EINVAL;
 961         if (0 == INPUT(i)->type)
 962                 return -EINVAL;
 963
 964         dev->ctl_input = i;
 965
 966         mutex_lock(&dev->lock);
 967         video_mux(dev, dev->ctl_input);
 968         mutex_unlock(&dev->lock);
 969         return 0;
 970 }
 971
 972 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 973 {
 974         struct em28xx_fh   *fh    = priv;
 975         struct em28xx      *dev   = fh->dev;
 976
 977         switch (a->index) {
 978         case EM28XX_AMUX_VIDEO:
 979                 strcpy(a->name, "Television");
 980                 break;
 981         case EM28XX_AMUX_LINE_IN:
 982                 strcpy(a->name, "Line In");
 983                 break;
 984         case EM28XX_AMUX_VIDEO2:
 985                 strcpy(a->name, "Television alt");
 986                 break;
 987         case EM28XX_AMUX_PHONE:
 988                 strcpy(a->name, "Phone");
 989                 break;
 990         case EM28XX_AMUX_MIC:
 991                 strcpy(a->name, "Mic");
 992                 break;
 993         case EM28XX_AMUX_CD:
 994                 strcpy(a->name, "CD");
 995                 break;
 996         case EM28XX_AMUX_AUX:
 997                 strcpy(a->name, "Aux");
 998                 break;
 999         case EM28XX_AMUX_PCM_OUT:
1000                 strcpy(a->name, "PCM");
1001                 break;
1002         default:
1003                 return -EINVAL;
1004         }
1005
1006         a->index = dev->ctl_ainput;
1007         a->capability = V4L2_AUDCAP_STEREO;
1008
1009         return 0;
1010 }
1011
1012 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1013 {
1014         struct em28xx_fh   *fh  = priv;
1015         struct em28xx      *dev = fh->dev;
1016
1017
1018         if (a->index >= MAX_EM28XX_INPUT)
1019                 return -EINVAL;
1020         if (0 == INPUT(a->index)->type)
1021                 return -EINVAL;
1022
1023         mutex_lock(&dev->lock);
1024
1025         dev->ctl_ainput = INPUT(a->index)->amux;
1026         dev->ctl_aoutput = INPUT(a->index)->aout;
1027
1028         if (!dev->ctl_aoutput)
1029                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1030
1031         mutex_unlock(&dev->lock);
1032         return 0;
1033 }
1034
1035 static int vidioc_queryctrl(struct file *file, void *priv,
1036                                 struct v4l2_queryctrl *qc)
1037 {
1038         struct em28xx_fh      *fh  = priv;
1039         struct em28xx         *dev = fh->dev;
1040         int                   id  = qc->id;
1041         int                   i;
1042         int                   rc;
1043
1044         rc = check_dev(dev);
1045         if (rc < 0)
1046                 return rc;
1047
1048         memset(qc, 0, sizeof(*qc));
1049
1050         qc->id = id;
1051
1052         if (!dev->board.has_msp34xx) {
1053                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1054                         if (qc->id && qc->id == em28xx_qctrl[i].id) {
1055                                 memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1056                                 return 0;
1057                         }
1058                 }
1059         }
1060
1061         mutex_lock(&dev->lock);
1062         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1063         mutex_unlock(&dev->lock);
1064
1065         if (qc->type)
1066                 return 0;
1067         else
1068                 return -EINVAL;
1069 }
1070
1071 static int vidioc_g_ctrl(struct file *file, void *priv,
1072                                 struct v4l2_control *ctrl)
1073 {
1074         struct em28xx_fh      *fh  = priv;
1075         struct em28xx         *dev = fh->dev;
1076         int                   rc;
1077
1078         rc = check_dev(dev);
1079         if (rc < 0)
1080                 return rc;
1081         rc = 0;
1082
1083         mutex_lock(&dev->lock);
1084
1085         if (dev->board.has_msp34xx)
1086                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1087         else {
1088                 rc = em28xx_get_ctrl(dev, ctrl);
1089                 if (rc < 0) {
1090                         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1091                         rc = 0;
1092                 }
1093         }
1094
1095         mutex_unlock(&dev->lock);
1096         return rc;
1097 }
1098
1099 static int vidioc_s_ctrl(struct file *file, void *priv,
1100                                 struct v4l2_control *ctrl)
1101 {
1102         struct em28xx_fh      *fh  = priv;
1103         struct em28xx         *dev = fh->dev;
1104         u8                    i;
1105         int                   rc;
1106
1107         rc = check_dev(dev);
1108         if (rc < 0)
1109                 return rc;
1110
1111         mutex_lock(&dev->lock);
1112
1113         if (dev->board.has_msp34xx)
1114                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1115         else {
1116                 rc = 1;
1117                 for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1118                         if (ctrl->id == em28xx_qctrl[i].id) {
1119                                 if (ctrl->value < em28xx_qctrl[i].minimum ||
1120                                     ctrl->value > em28xx_qctrl[i].maximum) {
1121                                         rc = -ERANGE;
1122                                         break;
1123                                 }
1124
1125                                 rc = em28xx_set_ctrl(dev, ctrl);
1126                                 break;
1127                         }
1128                 }
1129         }
1130
1131         /* Control not found - try to send it to the attached devices */
1132         if (rc == 1) {
1133                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1134                 rc = 0;
1135         }
1136
1137         mutex_unlock(&dev->lock);
1138         return rc;
1139 }
1140
1141 static int vidioc_g_tuner(struct file *file, void *priv,
1142                                 struct v4l2_tuner *t)
1143 {
1144         struct em28xx_fh      *fh  = priv;
1145         struct em28xx         *dev = fh->dev;
1146         int                   rc;
1147
1148         rc = check_dev(dev);
1149         if (rc < 0)
1150                 return rc;
1151
1152         if (0 != t->index)
1153                 return -EINVAL;
1154
1155         strcpy(t->name, "Tuner");
1156
1157         mutex_lock(&dev->lock);
1158         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1159         mutex_unlock(&dev->lock);
1160
1161         return 0;
1162 }
1163
1164 static int vidioc_s_tuner(struct file *file, void *priv,
1165                                 struct v4l2_tuner *t)
1166 {
1167         struct em28xx_fh      *fh  = priv;
1168         struct em28xx         *dev = fh->dev;
1169         int                   rc;
1170
1171         rc = check_dev(dev);
1172         if (rc < 0)
1173                 return rc;
1174
1175         if (0 != t->index)
1176                 return -EINVAL;
1177
1178         mutex_lock(&dev->lock);
1179         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1180         mutex_unlock(&dev->lock);
1181
1182         return 0;
1183 }
1184
1185 static int vidioc_g_frequency(struct file *file, void *priv,
1186                                 struct v4l2_frequency *f)
1187 {
1188         struct em28xx_fh      *fh  = priv;
1189         struct em28xx         *dev = fh->dev;
1190
1191         mutex_lock(&dev->lock);
1192         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1193         f->frequency = dev->ctl_freq;
1194         mutex_unlock(&dev->lock);
1195
1196         return 0;
1197 }
1198
1199 static int vidioc_s_frequency(struct file *file, void *priv,
1200                                 struct v4l2_frequency *f)
1201 {
1202         struct em28xx_fh      *fh  = priv;
1203         struct em28xx         *dev = fh->dev;
1204         int                   rc;
1205
1206         rc = check_dev(dev);
1207         if (rc < 0)
1208                 return rc;
1209
1210         if (0 != f->tuner)
1211                 return -EINVAL;
1212
1213         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1214                 return -EINVAL;
1215         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1216                 return -EINVAL;
1217
1218         mutex_lock(&dev->lock);
1219
1220         dev->ctl_freq = f->frequency;
1221         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1222
1223         mutex_unlock(&dev->lock);
1224
1225         return 0;
1226 }
1227
1228 #ifdef CONFIG_VIDEO_ADV_DEBUG
1229 static int em28xx_reg_len(int reg)
1230 {
1231         switch (reg) {
1232         case EM28XX_R40_AC97LSB:
1233         case EM28XX_R30_HSCALELOW:
1234         case EM28XX_R32_VSCALELOW:
1235                 return 2;
1236         default:
1237                 return 1;
1238         }
1239 }
1240
1241 static int vidioc_g_chip_ident(struct file *file, void *priv,
1242                struct v4l2_dbg_chip_ident *chip)
1243 {
1244         struct em28xx_fh      *fh  = priv;
1245         struct em28xx         *dev = fh->dev;
1246
1247         chip->ident = V4L2_IDENT_NONE;
1248         chip->revision = 0;
1249
1250         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1251
1252         return 0;
1253 }
1254
1255
1256 static int vidioc_g_register(struct file *file, void *priv,
1257                              struct v4l2_dbg_register *reg)
1258 {
1259         struct em28xx_fh      *fh  = priv;
1260         struct em28xx         *dev = fh->dev;
1261         int ret;
1262
1263         switch (reg->match.type) {
1264         case V4L2_CHIP_MATCH_AC97:
1265                 mutex_lock(&dev->lock);
1266                 ret = em28xx_read_ac97(dev, reg->reg);
1267                 mutex_unlock(&dev->lock);
1268                 if (ret < 0)
1269                         return ret;
1270
1271                 reg->val = ret;
1272                 reg->size = 1;
1273                 return 0;
1274         case V4L2_CHIP_MATCH_I2C_DRIVER:
1275                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1276                 return 0;
1277         case V4L2_CHIP_MATCH_I2C_ADDR:
1278                 /* Not supported yet */
1279                 return -EINVAL;
1280         default:
1281                 if (!v4l2_chip_match_host(&reg->match))
1282                         return -EINVAL;
1283         }
1284
1285         /* Match host */
1286         reg->size = em28xx_reg_len(reg->reg);
1287         if (reg->size == 1) {
1288                 mutex_lock(&dev->lock);
1289                 ret = em28xx_read_reg(dev, reg->reg);
1290                 mutex_unlock(&dev->lock);
1291
1292                 if (ret < 0)
1293                         return ret;
1294
1295                 reg->val = ret;
1296         } else {
1297                 __le16 val = 0;
1298                 mutex_lock(&dev->lock);
1299                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1300                                                    reg->reg, (char *)&val, 2);
1301                 mutex_unlock(&dev->lock);
1302                 if (ret < 0)
1303                         return ret;
1304
1305                 reg->val = le16_to_cpu(val);
1306         }
1307
1308         return 0;
1309 }
1310
1311 static int vidioc_s_register(struct file *file, void *priv,
1312                              struct v4l2_dbg_register *reg)
1313 {
1314         struct em28xx_fh      *fh  = priv;
1315         struct em28xx         *dev = fh->dev;
1316         __le16 buf;
1317         int    rc;
1318
1319         switch (reg->match.type) {
1320         case V4L2_CHIP_MATCH_AC97:
1321                 mutex_lock(&dev->lock);
1322                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1323                 mutex_unlock(&dev->lock);
1324
1325                 return rc;
1326         case V4L2_CHIP_MATCH_I2C_DRIVER:
1327                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1328                 return 0;
1329         case V4L2_CHIP_MATCH_I2C_ADDR:
1330                 /* Not supported yet */
1331                 return -EINVAL;
1332         default:
1333                 if (!v4l2_chip_match_host(&reg->match))
1334                         return -EINVAL;
1335         }
1336
1337         /* Match host */
1338         buf = cpu_to_le16(reg->val);
1339
1340         mutex_lock(&dev->lock);
1341         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1342                                em28xx_reg_len(reg->reg));
1343         mutex_unlock(&dev->lock);
1344
1345         return rc;
1346 }
1347 #endif
1348
1349
1350 static int vidioc_cropcap(struct file *file, void *priv,
1351                                         struct v4l2_cropcap *cc)
1352 {
1353         struct em28xx_fh      *fh  = priv;
1354         struct em28xx         *dev = fh->dev;
1355
1356         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1357                 return -EINVAL;
1358
1359         cc->bounds.left = 0;
1360         cc->bounds.top = 0;
1361         cc->bounds.width = dev->width;
1362         cc->bounds.height = dev->height;
1363         cc->defrect = cc->bounds;
1364         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1365         cc->pixelaspect.denominator = 59;
1366
1367         return 0;
1368 }
1369
1370 static int vidioc_streamon(struct file *file, void *priv,
1371                                         enum v4l2_buf_type type)
1372 {
1373         struct em28xx_fh      *fh  = priv;
1374         struct em28xx         *dev = fh->dev;
1375         int                   rc;
1376
1377         rc = check_dev(dev);
1378         if (rc < 0)
1379                 return rc;
1380
1381
1382         mutex_lock(&dev->lock);
1383         rc = res_get(fh);
1384
1385         if (likely(rc >= 0))
1386                 rc = videobuf_streamon(&fh->vb_vidq);
1387
1388         mutex_unlock(&dev->lock);
1389
1390         return rc;
1391 }
1392
1393 static int vidioc_streamoff(struct file *file, void *priv,
1394                                         enum v4l2_buf_type type)
1395 {
1396         struct em28xx_fh      *fh  = priv;
1397         struct em28xx         *dev = fh->dev;
1398         int                   rc;
1399
1400         rc = check_dev(dev);
1401         if (rc < 0)
1402                 return rc;
1403
1404         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1405                 return -EINVAL;
1406         if (type != fh->type)
1407                 return -EINVAL;
1408
1409         mutex_lock(&dev->lock);
1410
1411         videobuf_streamoff(&fh->vb_vidq);
1412         res_free(fh);
1413
1414         mutex_unlock(&dev->lock);
1415
1416         return 0;
1417 }
1418
1419 static int vidioc_querycap(struct file *file, void  *priv,
1420                                         struct v4l2_capability *cap)
1421 {
1422         struct em28xx_fh      *fh  = priv;
1423         struct em28xx         *dev = fh->dev;
1424
1425         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1426         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1427         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1428
1429         cap->version = EM28XX_VERSION_CODE;
1430
1431         cap->capabilities =
1432                         V4L2_CAP_SLICED_VBI_CAPTURE |
1433                         V4L2_CAP_VIDEO_CAPTURE |
1434                         V4L2_CAP_AUDIO |
1435                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1436
1437         if (dev->tuner_type != TUNER_ABSENT)
1438                 cap->capabilities |= V4L2_CAP_TUNER;
1439
1440         return 0;
1441 }
1442
1443 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1444                                         struct v4l2_fmtdesc *f)
1445 {
1446         if (unlikely(f->index >= ARRAY_SIZE(format)))
1447                 return -EINVAL;
1448
1449         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1450         f->pixelformat = format[f->index].fourcc;
1451
1452         return 0;
1453 }
1454
1455 /* Sliced VBI ioctls */
1456 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1457                                         struct v4l2_format *f)
1458 {
1459         struct em28xx_fh      *fh  = priv;
1460         struct em28xx         *dev = fh->dev;
1461         int                   rc;
1462
1463         rc = check_dev(dev);
1464         if (rc < 0)
1465                 return rc;
1466
1467         mutex_lock(&dev->lock);
1468
1469         f->fmt.sliced.service_set = 0;
1470         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1471
1472         if (f->fmt.sliced.service_set == 0)
1473                 rc = -EINVAL;
1474
1475         mutex_unlock(&dev->lock);
1476
1477         return rc;
1478 }
1479
1480 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1481                         struct v4l2_format *f)
1482 {
1483         struct em28xx_fh      *fh  = priv;
1484         struct em28xx         *dev = fh->dev;
1485         int                   rc;
1486
1487         rc = check_dev(dev);
1488         if (rc < 0)
1489                 return rc;
1490
1491         mutex_lock(&dev->lock);
1492         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1493         mutex_unlock(&dev->lock);
1494
1495         if (f->fmt.sliced.service_set == 0)
1496                 return -EINVAL;
1497
1498         return 0;
1499 }
1500
1501
1502 static int vidioc_reqbufs(struct file *file, void *priv,
1503                           struct v4l2_requestbuffers *rb)
1504 {
1505         struct em28xx_fh      *fh  = priv;
1506         struct em28xx         *dev = fh->dev;
1507         int                   rc;
1508
1509         rc = check_dev(dev);
1510         if (rc < 0)
1511                 return rc;
1512
1513         return videobuf_reqbufs(&fh->vb_vidq, rb);
1514 }
1515
1516 static int vidioc_querybuf(struct file *file, void *priv,
1517                            struct v4l2_buffer *b)
1518 {
1519         struct em28xx_fh      *fh  = priv;
1520         struct em28xx         *dev = fh->dev;
1521         int                   rc;
1522
1523         rc = check_dev(dev);
1524         if (rc < 0)
1525                 return rc;
1526
1527         return videobuf_querybuf(&fh->vb_vidq, b);
1528 }
1529
1530 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1531 {
1532         struct em28xx_fh      *fh  = priv;
1533         struct em28xx         *dev = fh->dev;
1534         int                   rc;
1535
1536         rc = check_dev(dev);
1537         if (rc < 0)
1538                 return rc;
1539
1540         return videobuf_qbuf(&fh->vb_vidq, b);
1541 }
1542
1543 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1544 {
1545         struct em28xx_fh      *fh  = priv;
1546         struct em28xx         *dev = fh->dev;
1547         int                   rc;
1548
1549         rc = check_dev(dev);
1550         if (rc < 0)
1551                 return rc;
1552
1553         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1554 }
1555
1556 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1557 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1558 {
1559         struct em28xx_fh  *fh = priv;
1560
1561         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1562 }
1563 #endif
1564
1565
1566 /* ----------------------------------------------------------- */
1567 /* RADIO ESPECIFIC IOCTLS                                      */
1568 /* ----------------------------------------------------------- */
1569
1570 static int radio_querycap(struct file *file, void  *priv,
1571                           struct v4l2_capability *cap)
1572 {
1573         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1574
1575         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1576         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1577         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1578
1579         cap->version = EM28XX_VERSION_CODE;
1580         cap->capabilities = V4L2_CAP_TUNER;
1581         return 0;
1582 }
1583
1584 static int radio_g_tuner(struct file *file, void *priv,
1585                          struct v4l2_tuner *t)
1586 {
1587         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1588
1589         if (unlikely(t->index > 0))
1590                 return -EINVAL;
1591
1592         strcpy(t->name, "Radio");
1593         t->type = V4L2_TUNER_RADIO;
1594
1595         mutex_lock(&dev->lock);
1596         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1597         mutex_unlock(&dev->lock);
1598
1599         return 0;
1600 }
1601
1602 static int radio_enum_input(struct file *file, void *priv,
1603                             struct v4l2_input *i)
1604 {
1605         if (i->index != 0)
1606                 return -EINVAL;
1607         strcpy(i->name, "Radio");
1608         i->type = V4L2_INPUT_TYPE_TUNER;
1609
1610         return 0;
1611 }
1612
1613 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1614 {
1615         if (unlikely(a->index))
1616                 return -EINVAL;
1617
1618         strcpy(a->name, "Radio");
1619         return 0;
1620 }
1621
1622 static int radio_s_tuner(struct file *file, void *priv,
1623                          struct v4l2_tuner *t)
1624 {
1625         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1626
1627         if (0 != t->index)
1628                 return -EINVAL;
1629
1630         mutex_lock(&dev->lock);
1631         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1632         mutex_unlock(&dev->lock);
1633
1634         return 0;
1635 }
1636
1637 static int radio_s_audio(struct file *file, void *fh,
1638                          struct v4l2_audio *a)
1639 {
1640         return 0;
1641 }
1642
1643 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1644 {
1645         return 0;
1646 }
1647
1648 static int radio_queryctrl(struct file *file, void *priv,
1649                            struct v4l2_queryctrl *qc)
1650 {
1651         int i;
1652
1653         if (qc->id <  V4L2_CID_BASE ||
1654                 qc->id >= V4L2_CID_LASTP1)
1655                 return -EINVAL;
1656
1657         for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
1658                 if (qc->id && qc->id == em28xx_qctrl[i].id) {
1659                         memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc));
1660                         return 0;
1661                 }
1662         }
1663
1664         return -EINVAL;
1665 }
1666
1667 /*
1668  * em28xx_v4l2_open()
1669  * inits the device and starts isoc transfer
1670  */
1671 static int em28xx_v4l2_open(struct file *filp)
1672 {
1673         int minor = video_devdata(filp)->minor;
1674         int errCode = 0, radio;
1675         struct em28xx *dev;
1676         enum v4l2_buf_type fh_type;
1677         struct em28xx_fh *fh;
1678         enum v4l2_field field;
1679
1680         dev = em28xx_get_device(minor, &fh_type, &radio);
1681
1682         if (NULL == dev)
1683                 return -ENODEV;
1684
1685         mutex_lock(&dev->lock);
1686
1687         em28xx_videodbg("open minor=%d type=%s users=%d\n",
1688                                 minor, v4l2_type_names[fh_type], dev->users);
1689
1690
1691         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1692         if (!fh) {
1693                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1694                 mutex_unlock(&dev->lock);
1695                 return -ENOMEM;
1696         }
1697         fh->dev = dev;
1698         fh->radio = radio;
1699         fh->type = fh_type;
1700         filp->private_data = fh;
1701
1702         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1703                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1704                 em28xx_set_alternate(dev);
1705                 em28xx_resolution_set(dev);
1706
1707                 /* Needed, since GPIO might have disabled power of
1708                    some i2c device
1709                  */
1710                 em28xx_wake_i2c(dev);
1711
1712         }
1713         if (fh->radio) {
1714                 em28xx_videodbg("video_open: setting radio device\n");
1715                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1716         }
1717
1718         dev->users++;
1719
1720         if (dev->progressive)
1721                 field = V4L2_FIELD_NONE;
1722         else
1723                 field = V4L2_FIELD_INTERLACED;
1724
1725         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1726                         NULL, &dev->slock, fh->type, field,
1727                         sizeof(struct em28xx_buffer), fh);
1728
1729         mutex_unlock(&dev->lock);
1730
1731         return errCode;
1732 }
1733
1734 /*
1735  * em28xx_realease_resources()
1736  * unregisters the v4l2,i2c and usb devices
1737  * called when the device gets disconected or at module unload
1738 */
1739 void em28xx_release_analog_resources(struct em28xx *dev)
1740 {
1741
1742         /*FIXME: I2C IR should be disconnected */
1743
1744         if (dev->radio_dev) {
1745                 if (-1 != dev->radio_dev->minor)
1746                         video_unregister_device(dev->radio_dev);
1747                 else
1748                         video_device_release(dev->radio_dev);
1749                 dev->radio_dev = NULL;
1750         }
1751         if (dev->vbi_dev) {
1752                 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1753                             dev->vbi_dev->num);
1754                 if (-1 != dev->vbi_dev->minor)
1755                         video_unregister_device(dev->vbi_dev);
1756                 else
1757                         video_device_release(dev->vbi_dev);
1758                 dev->vbi_dev = NULL;
1759         }
1760         if (dev->vdev) {
1761                 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1762                             dev->vdev->num);
1763                 if (-1 != dev->vdev->minor)
1764                         video_unregister_device(dev->vdev);
1765                 else
1766                         video_device_release(dev->vdev);
1767                 dev->vdev = NULL;
1768         }
1769 }
1770
1771 /*
1772  * em28xx_v4l2_close()
1773  * stops streaming and deallocates all resources allocated by the v4l2
1774  * calls and ioctls
1775  */
1776 static int em28xx_v4l2_close(struct file *filp)
1777 {
1778         struct em28xx_fh *fh  = filp->private_data;
1779         struct em28xx    *dev = fh->dev;
1780         int              errCode;
1781
1782         em28xx_videodbg("users=%d\n", dev->users);
1783
1784
1785         mutex_lock(&dev->lock);
1786         if (res_check(fh))
1787                 res_free(fh);
1788
1789         if (dev->users == 1) {
1790                 videobuf_stop(&fh->vb_vidq);
1791                 videobuf_mmap_free(&fh->vb_vidq);
1792
1793                 /* the device is already disconnect,
1794                    free the remaining resources */
1795                 if (dev->state & DEV_DISCONNECTED) {
1796                         em28xx_release_resources(dev);
1797                         mutex_unlock(&dev->lock);
1798                         kfree(dev);
1799                         return 0;
1800                 }
1801
1802                 /* Save some power by putting tuner to sleep */
1803                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
1804
1805                 /* do this before setting alternate! */
1806                 em28xx_uninit_isoc(dev);
1807                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1808
1809                 /* set alternate 0 */
1810                 dev->alt = 0;
1811                 em28xx_videodbg("setting alternate 0\n");
1812                 errCode = usb_set_interface(dev->udev, 0, 0);
1813                 if (errCode < 0) {
1814                         em28xx_errdev("cannot change alternate number to "
1815                                         "0 (error=%i)\n", errCode);
1816                 }
1817         }
1818         kfree(fh);
1819         dev->users--;
1820         wake_up_interruptible_nr(&dev->open, 1);
1821         mutex_unlock(&dev->lock);
1822         return 0;
1823 }
1824
1825 /*
1826  * em28xx_v4l2_read()
1827  * will allocate buffers when called for the first time
1828  */
1829 static ssize_t
1830 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1831                  loff_t *pos)
1832 {
1833         struct em28xx_fh *fh = filp->private_data;
1834         struct em28xx *dev = fh->dev;
1835         int rc;
1836
1837         rc = check_dev(dev);
1838         if (rc < 0)
1839                 return rc;
1840
1841         /* FIXME: read() is not prepared to allow changing the video
1842            resolution while streaming. Seems a bug at em28xx_set_fmt
1843          */
1844
1845         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1846                 mutex_lock(&dev->lock);
1847                 rc = res_get(fh);
1848                 mutex_unlock(&dev->lock);
1849
1850                 if (unlikely(rc < 0))
1851                         return rc;
1852
1853                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1854                                         filp->f_flags & O_NONBLOCK);
1855         }
1856         return 0;
1857 }
1858
1859 /*
1860  * em28xx_v4l2_poll()
1861  * will allocate buffers when called for the first time
1862  */
1863 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
1864 {
1865         struct em28xx_fh *fh = filp->private_data;
1866         struct em28xx *dev = fh->dev;
1867         int rc;
1868
1869         rc = check_dev(dev);
1870         if (rc < 0)
1871                 return rc;
1872
1873         mutex_lock(&dev->lock);
1874         rc = res_get(fh);
1875         mutex_unlock(&dev->lock);
1876
1877         if (unlikely(rc < 0))
1878                 return POLLERR;
1879
1880         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1881                 return POLLERR;
1882
1883         return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1884 }
1885
1886 /*
1887  * em28xx_v4l2_mmap()
1888  */
1889 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1890 {
1891         struct em28xx_fh *fh    = filp->private_data;
1892         struct em28xx    *dev   = fh->dev;
1893         int              rc;
1894
1895         rc = check_dev(dev);
1896         if (rc < 0)
1897                 return rc;
1898
1899         mutex_lock(&dev->lock);
1900         rc = res_get(fh);
1901         mutex_unlock(&dev->lock);
1902
1903         if (unlikely(rc < 0))
1904                 return rc;
1905
1906         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1907
1908         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1909                 (unsigned long)vma->vm_start,
1910                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1911                 rc);
1912
1913         return rc;
1914 }
1915
1916 static const struct v4l2_file_operations em28xx_v4l_fops = {
1917         .owner         = THIS_MODULE,
1918         .open          = em28xx_v4l2_open,
1919         .release       = em28xx_v4l2_close,
1920         .read          = em28xx_v4l2_read,
1921         .poll          = em28xx_v4l2_poll,
1922         .mmap          = em28xx_v4l2_mmap,
1923         .ioctl         = video_ioctl2,
1924 };
1925
1926 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1927         .vidioc_querycap            = vidioc_querycap,
1928         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1929         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1930         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1931         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1932         .vidioc_g_audio             = vidioc_g_audio,
1933         .vidioc_s_audio             = vidioc_s_audio,
1934         .vidioc_cropcap             = vidioc_cropcap,
1935
1936         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
1937         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1938         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
1939
1940         .vidioc_reqbufs             = vidioc_reqbufs,
1941         .vidioc_querybuf            = vidioc_querybuf,
1942         .vidioc_qbuf                = vidioc_qbuf,
1943         .vidioc_dqbuf               = vidioc_dqbuf,
1944         .vidioc_s_std               = vidioc_s_std,
1945         .vidioc_g_parm              = vidioc_g_parm,
1946         .vidioc_s_parm              = vidioc_s_parm,
1947         .vidioc_enum_input          = vidioc_enum_input,
1948         .vidioc_g_input             = vidioc_g_input,
1949         .vidioc_s_input             = vidioc_s_input,
1950         .vidioc_queryctrl           = vidioc_queryctrl,
1951         .vidioc_g_ctrl              = vidioc_g_ctrl,
1952         .vidioc_s_ctrl              = vidioc_s_ctrl,
1953         .vidioc_streamon            = vidioc_streamon,
1954         .vidioc_streamoff           = vidioc_streamoff,
1955         .vidioc_g_tuner             = vidioc_g_tuner,
1956         .vidioc_s_tuner             = vidioc_s_tuner,
1957         .vidioc_g_frequency         = vidioc_g_frequency,
1958         .vidioc_s_frequency         = vidioc_s_frequency,
1959 #ifdef CONFIG_VIDEO_ADV_DEBUG
1960         .vidioc_g_register          = vidioc_g_register,
1961         .vidioc_s_register          = vidioc_s_register,
1962         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
1963 #endif
1964 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1965         .vidiocgmbuf                = vidiocgmbuf,
1966 #endif
1967 };
1968
1969 static const struct video_device em28xx_video_template = {
1970         .fops                       = &em28xx_v4l_fops,
1971         .release                    = video_device_release,
1972         .ioctl_ops                  = &video_ioctl_ops,
1973
1974         .minor                      = -1,
1975
1976         .tvnorms                    = V4L2_STD_ALL,
1977         .current_norm               = V4L2_STD_PAL,
1978 };
1979
1980 static const struct v4l2_file_operations radio_fops = {
1981         .owner         = THIS_MODULE,
1982         .open          = em28xx_v4l2_open,
1983         .release       = em28xx_v4l2_close,
1984         .ioctl         = video_ioctl2,
1985 };
1986
1987 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1988         .vidioc_querycap      = radio_querycap,
1989         .vidioc_g_tuner       = radio_g_tuner,
1990         .vidioc_enum_input    = radio_enum_input,
1991         .vidioc_g_audio       = radio_g_audio,
1992         .vidioc_s_tuner       = radio_s_tuner,
1993         .vidioc_s_audio       = radio_s_audio,
1994         .vidioc_s_input       = radio_s_input,
1995         .vidioc_queryctrl     = radio_queryctrl,
1996         .vidioc_g_ctrl        = vidioc_g_ctrl,
1997         .vidioc_s_ctrl        = vidioc_s_ctrl,
1998         .vidioc_g_frequency   = vidioc_g_frequency,
1999         .vidioc_s_frequency   = vidioc_s_frequency,
2000 #ifdef CONFIG_VIDEO_ADV_DEBUG
2001         .vidioc_g_register    = vidioc_g_register,
2002         .vidioc_s_register    = vidioc_s_register,
2003 #endif
2004 };
2005
2006 static struct video_device em28xx_radio_template = {
2007         .name                 = "em28xx-radio",
2008         .fops                 = &radio_fops,
2009         .ioctl_ops            = &radio_ioctl_ops,
2010         .minor                = -1,
2011 };
2012
2013 /******************************** usb interface ******************************/
2014
2015
2016
2017 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2018                                         const struct video_device *template,
2019                                         const char *type_name)
2020 {
2021         struct video_device *vfd;
2022
2023         vfd = video_device_alloc();
2024         if (NULL == vfd)
2025                 return NULL;
2026
2027         *vfd            = *template;
2028         vfd->minor      = -1;
2029         vfd->v4l2_dev   = &dev->v4l2_dev;
2030         vfd->release    = video_device_release;
2031         vfd->debug      = video_debug;
2032
2033         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2034                  dev->name, type_name);
2035
2036         return vfd;
2037 }
2038
2039 int em28xx_register_analog_devices(struct em28xx *dev)
2040 {
2041       u8 val;
2042         int ret;
2043
2044         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2045                 dev->name,
2046                 (EM28XX_VERSION_CODE >> 16) & 0xff,
2047                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2048
2049         /* set default norm */
2050         dev->norm = em28xx_video_template.current_norm;
2051         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2052         dev->ctl_input = 0;
2053
2054         /* Analog specific initialization */
2055         dev->format = &format[0];
2056         em28xx_set_video_format(dev, format[0].fourcc,
2057                                 norm_maxw(dev), norm_maxh(dev));
2058
2059         video_mux(dev, dev->ctl_input);
2060
2061         /* Audio defaults */
2062         dev->mute = 1;
2063         dev->volume = 0x1f;
2064
2065         /* enable vbi capturing */
2066
2067 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2068         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2069         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2070                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
2071         em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
2072
2073         em28xx_set_outfmt(dev);
2074         em28xx_colorlevels_set_default(dev);
2075         em28xx_compression_disable(dev);
2076
2077         /* allocate and fill video video_device struct */
2078         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2079         if (!dev->vdev) {
2080                 em28xx_errdev("cannot allocate video_device.\n");
2081                 return -ENODEV;
2082         }
2083
2084         /* register v4l2 video video_device */
2085         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2086                                        video_nr[dev->devno]);
2087         if (ret) {
2088                 em28xx_errdev("unable to register video device (error=%i).\n",
2089                               ret);
2090                 return ret;
2091         }
2092
2093         /* Allocate and fill vbi video_device struct */
2094         dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2095
2096         /* register v4l2 vbi video_device */
2097         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2098                                         vbi_nr[dev->devno]);
2099         if (ret < 0) {
2100                 em28xx_errdev("unable to register vbi device\n");
2101                 return ret;
2102         }
2103
2104         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2105                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2106                                                   "radio");
2107                 if (!dev->radio_dev) {
2108                         em28xx_errdev("cannot allocate video_device.\n");
2109                         return -ENODEV;
2110                 }
2111                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2112                                             radio_nr[dev->devno]);
2113                 if (ret < 0) {
2114                         em28xx_errdev("can't register radio device\n");
2115                         return ret;
2116                 }
2117                 em28xx_info("Registered radio device as /dev/radio%d\n",
2118                             dev->radio_dev->num);
2119         }
2120
2121         em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2122                                 dev->vdev->num, dev->vbi_dev->num);
2123
2124         return 0;
2125 }