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 ac97_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 = V4L2_CTRL_FLAG_SLIDER,
 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  * ac97_queryctrl()
 613  * return the ac97 supported controls
 614  */
 615 static int ac97_queryctrl(struct v4l2_queryctrl *qc)
 616 {
 617         int i;
 618
 619         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
 620                 if (qc->id && qc->id == ac97_qctrl[i].id) {
 621                         memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
 622                         return 0;
 623                 }
 624         }
 625
 626         /* Control is not ac97 related */
 627         return 1;
 628 }
 629
 630 /*
 631  * ac97_get_ctrl()
 632  * return the current values for ac97 mute and volume
 633  */
 634 static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
 635 {
 636         switch (ctrl->id) {
 637         case V4L2_CID_AUDIO_MUTE:
 638                 ctrl->value = dev->mute;
 639                 return 0;
 640         case V4L2_CID_AUDIO_VOLUME:
 641                 ctrl->value = dev->volume;
 642                 return 0;
 643         default:
 644                 /* Control is not ac97 related */
 645                 return 1;
 646         }
 647 }
 648
 649 /*
 650  * ac97_set_ctrl()
 651  * set values for ac97 mute and volume
 652  */
 653 static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
 654 {
 655         int i;
 656
 657         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++)
 658                 if (ctrl->id == ac97_qctrl[i].id)
 659                         goto handle;
 660
 661         /* Announce that hasn't handle it */
 662         return 1;
 663
 664 handle:
 665         if (ctrl->value < ac97_qctrl[i].minimum ||
 666             ctrl->value > ac97_qctrl[i].maximum)
 667                 return -ERANGE;
 668
 669         switch (ctrl->id) {
 670         case V4L2_CID_AUDIO_MUTE:
 671                 dev->mute = ctrl->value;
 672                 break;
 673         case V4L2_CID_AUDIO_VOLUME:
 674                 dev->volume = ctrl->value;
 675                 break;
 676         }
 677
 678         return em28xx_audio_analog_set(dev);
 679 }
 680
 681 static int check_dev(struct em28xx *dev)
 682 {
 683         if (dev->state & DEV_DISCONNECTED) {
 684                 em28xx_errdev("v4l2 ioctl: device not present\n");
 685                 return -ENODEV;
 686         }
 687
 688         if (dev->state & DEV_MISCONFIGURED) {
 689                 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
 690                               "close and open it again\n");
 691                 return -EIO;
 692         }
 693         return 0;
 694 }
 695
 696 static void get_scale(struct em28xx *dev,
 697                         unsigned int width, unsigned int height,
 698                         unsigned int *hscale, unsigned int *vscale)
 699 {
 700         unsigned int          maxw = norm_maxw(dev);
 701         unsigned int          maxh = norm_maxh(dev);
 702
 703         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 704         if (*hscale >= 0x4000)
 705                 *hscale = 0x3fff;
 706
 707         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 708         if (*vscale >= 0x4000)
 709                 *vscale = 0x3fff;
 710 }
 711
 712 /* ------------------------------------------------------------------
 713         IOCTL vidioc handling
 714    ------------------------------------------------------------------*/
 715
 716 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 717                                         struct v4l2_format *f)
 718 {
 719         struct em28xx_fh      *fh  = priv;
 720         struct em28xx         *dev = fh->dev;
 721
 722         mutex_lock(&dev->lock);
 723
 724         f->fmt.pix.width = dev->width;
 725         f->fmt.pix.height = dev->height;
 726         f->fmt.pix.pixelformat = dev->format->fourcc;
 727         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 728         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
 729         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 730
 731         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
 732         if (dev->progressive)
 733                 f->fmt.pix.field = V4L2_FIELD_NONE;
 734         else
 735                 f->fmt.pix.field = dev->interlaced ?
 736                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 737
 738         mutex_unlock(&dev->lock);
 739         return 0;
 740 }
 741
 742 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
 743 {
 744         unsigned int i;
 745
 746         for (i = 0; i < ARRAY_SIZE(format); i++)
 747                 if (format[i].fourcc == fourcc)
 748                         return &format[i];
 749
 750         return NULL;
 751 }
 752
 753 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 754                         struct v4l2_format *f)
 755 {
 756         struct em28xx_fh      *fh    = priv;
 757         struct em28xx         *dev   = fh->dev;
 758         unsigned int          width  = f->fmt.pix.width;
 759         unsigned int          height = f->fmt.pix.height;
 760         unsigned int          maxw   = norm_maxw(dev);
 761         unsigned int          maxh   = norm_maxh(dev);
 762         unsigned int          hscale, vscale;
 763         struct em28xx_fmt     *fmt;
 764
 765         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 766         if (!fmt) {
 767                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
 768                                 f->fmt.pix.pixelformat);
 769                 return -EINVAL;
 770         }
 771
 772         if (dev->board.is_em2800) {
 773                 /* the em2800 can only scale down to 50% */
 774                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
 775                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
 776                 /* According to empiatech support the MaxPacketSize is too small
 777                  * to support framesizes larger than 640x480 @ 30 fps or 640x576
 778                  * @ 25 fps.  As this would cut of a part of the image we prefer
 779                  * 360x576 or 360x480 for now */
 780                 if (width == maxw && height == maxh)
 781                         width /= 2;
 782         } else {
 783                 /* width must even because of the YUYV format
 784                    height must be even because of interlacing */
 785                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 786         }
 787
 788         get_scale(dev, width, height, &hscale, &vscale);
 789
 790         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 791         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 792
 793         f->fmt.pix.width = width;
 794         f->fmt.pix.height = height;
 795         f->fmt.pix.pixelformat = fmt->fourcc;
 796         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 797         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 798         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 799         if (dev->progressive)
 800                 f->fmt.pix.field = V4L2_FIELD_NONE;
 801         else
 802                 f->fmt.pix.field = dev->interlaced ?
 803                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 804
 805         return 0;
 806 }
 807
 808 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
 809                                    unsigned width, unsigned height)
 810 {
 811         struct em28xx_fmt     *fmt;
 812
 813         fmt = format_by_fourcc(fourcc);
 814         if (!fmt)
 815                 return -EINVAL;
 816
 817         dev->format = fmt;
 818         dev->width  = width;
 819         dev->height = height;
 820
 821         /* set new image size */
 822         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 823
 824         em28xx_set_alternate(dev);
 825         em28xx_resolution_set(dev);
 826
 827         return 0;
 828 }
 829
 830 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 831                         struct v4l2_format *f)
 832 {
 833         struct em28xx_fh      *fh  = priv;
 834         struct em28xx         *dev = fh->dev;
 835         int                   rc;
 836
 837         rc = check_dev(dev);
 838         if (rc < 0)
 839                 return rc;
 840
 841         mutex_lock(&dev->lock);
 842
 843         vidioc_try_fmt_vid_cap(file, priv, f);
 844
 845         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 846                 em28xx_errdev("%s queue busy\n", __func__);
 847                 rc = -EBUSY;
 848                 goto out;
 849         }
 850
 851         if (dev->stream_on && !fh->stream_on) {
 852                 em28xx_errdev("%s device in use by another fh\n", __func__);
 853                 rc = -EBUSY;
 854                 goto out;
 855         }
 856
 857         rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
 858                                 f->fmt.pix.width, f->fmt.pix.height);
 859
 860 out:
 861         mutex_unlock(&dev->lock);
 862         return rc;
 863 }
 864
 865 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
 866 {
 867         struct em28xx_fh   *fh  = priv;
 868         struct em28xx      *dev = fh->dev;
 869         struct v4l2_format f;
 870         int                rc;
 871
 872         rc = check_dev(dev);
 873         if (rc < 0)
 874                 return rc;
 875
 876         mutex_lock(&dev->lock);
 877         dev->norm = *norm;
 878
 879         /* Adjusts width/height, if needed */
 880         f.fmt.pix.width = dev->width;
 881         f.fmt.pix.height = dev->height;
 882         vidioc_try_fmt_vid_cap(file, priv, &f);
 883
 884         /* set new image size */
 885         dev->width = f.fmt.pix.width;
 886         dev->height = f.fmt.pix.height;
 887         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
 888
 889         em28xx_resolution_set(dev);
 890         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
 891
 892         mutex_unlock(&dev->lock);
 893         return 0;
 894 }
 895
 896 static int vidioc_g_parm(struct file *file, void *priv,
 897                          struct v4l2_streamparm *p)
 898 {
 899         struct em28xx_fh   *fh  = priv;
 900         struct em28xx      *dev = fh->dev;
 901         int rc = 0;
 902
 903         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 904                 return -EINVAL;
 905
 906         if (dev->board.is_webcam)
 907                 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
 908                                                 video, g_parm, p);
 909         else
 910                 v4l2_video_std_frame_period(dev->norm,
 911                                                  &p->parm.capture.timeperframe);
 912
 913         return rc;
 914 }
 915
 916 static int vidioc_s_parm(struct file *file, void *priv,
 917                          struct v4l2_streamparm *p)
 918 {
 919         struct em28xx_fh   *fh  = priv;
 920         struct em28xx      *dev = fh->dev;
 921
 922         if (!dev->board.is_webcam)
 923                 return -EINVAL;
 924
 925         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 926                 return -EINVAL;
 927
 928         return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
 929 }
 930
 931 static const char *iname[] = {
 932         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
 933         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
 934         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
 935         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
 936         [EM28XX_VMUX_SVIDEO]     = "S-Video",
 937         [EM28XX_VMUX_TELEVISION] = "Television",
 938         [EM28XX_VMUX_CABLE]      = "Cable TV",
 939         [EM28XX_VMUX_DVB]        = "DVB",
 940         [EM28XX_VMUX_DEBUG]      = "for debug only",
 941 };
 942
 943 static int vidioc_enum_input(struct file *file, void *priv,
 944                                 struct v4l2_input *i)
 945 {
 946         struct em28xx_fh   *fh  = priv;
 947         struct em28xx      *dev = fh->dev;
 948         unsigned int       n;
 949
 950         n = i->index;
 951         if (n >= MAX_EM28XX_INPUT)
 952                 return -EINVAL;
 953         if (0 == INPUT(n)->type)
 954                 return -EINVAL;
 955
 956         i->index = n;
 957         i->type = V4L2_INPUT_TYPE_CAMERA;
 958
 959         strcpy(i->name, iname[INPUT(n)->type]);
 960
 961         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
 962                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
 963                 i->type = V4L2_INPUT_TYPE_TUNER;
 964
 965         i->std = dev->vdev->tvnorms;
 966
 967         return 0;
 968 }
 969
 970 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 971 {
 972         struct em28xx_fh   *fh  = priv;
 973         struct em28xx      *dev = fh->dev;
 974
 975         *i = dev->ctl_input;
 976
 977         return 0;
 978 }
 979
 980 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
 981 {
 982         struct em28xx_fh   *fh  = priv;
 983         struct em28xx      *dev = fh->dev;
 984         int                rc;
 985
 986         rc = check_dev(dev);
 987         if (rc < 0)
 988                 return rc;
 989
 990         if (i >= MAX_EM28XX_INPUT)
 991                 return -EINVAL;
 992         if (0 == INPUT(i)->type)
 993                 return -EINVAL;
 994
 995         dev->ctl_input = i;
 996
 997         mutex_lock(&dev->lock);
 998         video_mux(dev, dev->ctl_input);
 999         mutex_unlock(&dev->lock);
1000         return 0;
1001 }
1002
1003 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1004 {
1005         struct em28xx_fh   *fh    = priv;
1006         struct em28xx      *dev   = fh->dev;
1007
1008         if (!dev->audio_mode.has_audio)
1009                 return -EINVAL;
1010
1011         switch (a->index) {
1012         case EM28XX_AMUX_VIDEO:
1013                 strcpy(a->name, "Television");
1014                 break;
1015         case EM28XX_AMUX_LINE_IN:
1016                 strcpy(a->name, "Line In");
1017                 break;
1018         case EM28XX_AMUX_VIDEO2:
1019                 strcpy(a->name, "Television alt");
1020                 break;
1021         case EM28XX_AMUX_PHONE:
1022                 strcpy(a->name, "Phone");
1023                 break;
1024         case EM28XX_AMUX_MIC:
1025                 strcpy(a->name, "Mic");
1026                 break;
1027         case EM28XX_AMUX_CD:
1028                 strcpy(a->name, "CD");
1029                 break;
1030         case EM28XX_AMUX_AUX:
1031                 strcpy(a->name, "Aux");
1032                 break;
1033         case EM28XX_AMUX_PCM_OUT:
1034                 strcpy(a->name, "PCM");
1035                 break;
1036         default:
1037                 return -EINVAL;
1038         }
1039
1040         a->index = dev->ctl_ainput;
1041         a->capability = V4L2_AUDCAP_STEREO;
1042
1043         return 0;
1044 }
1045
1046 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1047 {
1048         struct em28xx_fh   *fh  = priv;
1049         struct em28xx      *dev = fh->dev;
1050
1051
1052         if (!dev->audio_mode.has_audio)
1053                 return -EINVAL;
1054
1055         if (a->index >= MAX_EM28XX_INPUT)
1056                 return -EINVAL;
1057         if (0 == INPUT(a->index)->type)
1058                 return -EINVAL;
1059
1060         mutex_lock(&dev->lock);
1061
1062         dev->ctl_ainput = INPUT(a->index)->amux;
1063         dev->ctl_aoutput = INPUT(a->index)->aout;
1064
1065         if (!dev->ctl_aoutput)
1066                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1067
1068         mutex_unlock(&dev->lock);
1069         return 0;
1070 }
1071
1072 static int vidioc_queryctrl(struct file *file, void *priv,
1073                                 struct v4l2_queryctrl *qc)
1074 {
1075         struct em28xx_fh      *fh  = priv;
1076         struct em28xx         *dev = fh->dev;
1077         int                   id  = qc->id;
1078         int                   rc;
1079
1080         rc = check_dev(dev);
1081         if (rc < 0)
1082                 return rc;
1083
1084         memset(qc, 0, sizeof(*qc));
1085
1086         qc->id = id;
1087
1088         /* enumberate AC97 controls */
1089         if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1090                 rc = ac97_queryctrl(qc);
1091                 if (!rc)
1092                         return 0;
1093         }
1094
1095         /* enumberate V4L2 device controls */
1096         mutex_lock(&dev->lock);
1097         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1098         mutex_unlock(&dev->lock);
1099
1100         if (qc->type)
1101                 return 0;
1102         else
1103                 return -EINVAL;
1104 }
1105
1106 static int vidioc_g_ctrl(struct file *file, void *priv,
1107                                 struct v4l2_control *ctrl)
1108 {
1109         struct em28xx_fh      *fh  = priv;
1110         struct em28xx         *dev = fh->dev;
1111         int                   rc;
1112
1113         rc = check_dev(dev);
1114         if (rc < 0)
1115                 return rc;
1116         rc = 0;
1117
1118         mutex_lock(&dev->lock);
1119
1120         /* Set an AC97 control */
1121         if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1122                 rc = ac97_get_ctrl(dev, ctrl);
1123         else
1124                 rc = 1;
1125
1126         /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1127         if (rc == 1) {
1128                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1129                 rc = 0;
1130         }
1131
1132         mutex_unlock(&dev->lock);
1133         return rc;
1134 }
1135
1136 static int vidioc_s_ctrl(struct file *file, void *priv,
1137                                 struct v4l2_control *ctrl)
1138 {
1139         struct em28xx_fh      *fh  = priv;
1140         struct em28xx         *dev = fh->dev;
1141         int                   rc;
1142
1143         rc = check_dev(dev);
1144         if (rc < 0)
1145                 return rc;
1146
1147         mutex_lock(&dev->lock);
1148
1149         /* Set an AC97 control */
1150         if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1151                 rc = ac97_set_ctrl(dev, ctrl);
1152         else
1153                 rc = 1;
1154
1155         /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
1156         if (rc == 1) {
1157                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1158
1159                 /*
1160                  * In the case of non-AC97 volume controls, we still need
1161                  * to do some setups at em28xx, in order to mute/unmute
1162                  * and to adjust audio volume. However, the value ranges
1163                  * should be checked by the corresponding V4L subdriver.
1164                  */
1165                 switch (ctrl->id) {
1166                 case V4L2_CID_AUDIO_MUTE:
1167                         dev->mute = ctrl->value;
1168                         rc = em28xx_audio_analog_set(dev);
1169                         break;
1170                 case V4L2_CID_AUDIO_VOLUME:
1171                         dev->volume = ctrl->value;
1172                         rc = em28xx_audio_analog_set(dev);
1173                 }
1174         }
1175
1176         mutex_unlock(&dev->lock);
1177         return rc;
1178 }
1179
1180 static int vidioc_g_tuner(struct file *file, void *priv,
1181                                 struct v4l2_tuner *t)
1182 {
1183         struct em28xx_fh      *fh  = priv;
1184         struct em28xx         *dev = fh->dev;
1185         int                   rc;
1186
1187         rc = check_dev(dev);
1188         if (rc < 0)
1189                 return rc;
1190
1191         if (0 != t->index)
1192                 return -EINVAL;
1193
1194         strcpy(t->name, "Tuner");
1195
1196         mutex_lock(&dev->lock);
1197         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1198         mutex_unlock(&dev->lock);
1199
1200         return 0;
1201 }
1202
1203 static int vidioc_s_tuner(struct file *file, void *priv,
1204                                 struct v4l2_tuner *t)
1205 {
1206         struct em28xx_fh      *fh  = priv;
1207         struct em28xx         *dev = fh->dev;
1208         int                   rc;
1209
1210         rc = check_dev(dev);
1211         if (rc < 0)
1212                 return rc;
1213
1214         if (0 != t->index)
1215                 return -EINVAL;
1216
1217         mutex_lock(&dev->lock);
1218         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1219         mutex_unlock(&dev->lock);
1220
1221         return 0;
1222 }
1223
1224 static int vidioc_g_frequency(struct file *file, void *priv,
1225                                 struct v4l2_frequency *f)
1226 {
1227         struct em28xx_fh      *fh  = priv;
1228         struct em28xx         *dev = fh->dev;
1229
1230         mutex_lock(&dev->lock);
1231         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1232         f->frequency = dev->ctl_freq;
1233         mutex_unlock(&dev->lock);
1234
1235         return 0;
1236 }
1237
1238 static int vidioc_s_frequency(struct file *file, void *priv,
1239                                 struct v4l2_frequency *f)
1240 {
1241         struct em28xx_fh      *fh  = priv;
1242         struct em28xx         *dev = fh->dev;
1243         int                   rc;
1244
1245         rc = check_dev(dev);
1246         if (rc < 0)
1247                 return rc;
1248
1249         if (0 != f->tuner)
1250                 return -EINVAL;
1251
1252         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1253                 return -EINVAL;
1254         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1255                 return -EINVAL;
1256
1257         mutex_lock(&dev->lock);
1258
1259         dev->ctl_freq = f->frequency;
1260         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1261
1262         mutex_unlock(&dev->lock);
1263
1264         return 0;
1265 }
1266
1267 #ifdef CONFIG_VIDEO_ADV_DEBUG
1268 static int em28xx_reg_len(int reg)
1269 {
1270         switch (reg) {
1271         case EM28XX_R40_AC97LSB:
1272         case EM28XX_R30_HSCALELOW:
1273         case EM28XX_R32_VSCALELOW:
1274                 return 2;
1275         default:
1276                 return 1;
1277         }
1278 }
1279
1280 static int vidioc_g_chip_ident(struct file *file, void *priv,
1281                struct v4l2_dbg_chip_ident *chip)
1282 {
1283         struct em28xx_fh      *fh  = priv;
1284         struct em28xx         *dev = fh->dev;
1285
1286         chip->ident = V4L2_IDENT_NONE;
1287         chip->revision = 0;
1288
1289         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1290
1291         return 0;
1292 }
1293
1294
1295 static int vidioc_g_register(struct file *file, void *priv,
1296                              struct v4l2_dbg_register *reg)
1297 {
1298         struct em28xx_fh      *fh  = priv;
1299         struct em28xx         *dev = fh->dev;
1300         int ret;
1301
1302         switch (reg->match.type) {
1303         case V4L2_CHIP_MATCH_AC97:
1304                 mutex_lock(&dev->lock);
1305                 ret = em28xx_read_ac97(dev, reg->reg);
1306                 mutex_unlock(&dev->lock);
1307                 if (ret < 0)
1308                         return ret;
1309
1310                 reg->val = ret;
1311                 reg->size = 1;
1312                 return 0;
1313         case V4L2_CHIP_MATCH_I2C_DRIVER:
1314                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1315                 return 0;
1316         case V4L2_CHIP_MATCH_I2C_ADDR:
1317                 /* TODO: is this correct? */
1318                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1319                 return 0;
1320         default:
1321                 if (!v4l2_chip_match_host(&reg->match))
1322                         return -EINVAL;
1323         }
1324
1325         /* Match host */
1326         reg->size = em28xx_reg_len(reg->reg);
1327         if (reg->size == 1) {
1328                 mutex_lock(&dev->lock);
1329                 ret = em28xx_read_reg(dev, reg->reg);
1330                 mutex_unlock(&dev->lock);
1331
1332                 if (ret < 0)
1333                         return ret;
1334
1335                 reg->val = ret;
1336         } else {
1337                 __le16 val = 0;
1338                 mutex_lock(&dev->lock);
1339                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1340                                                    reg->reg, (char *)&val, 2);
1341                 mutex_unlock(&dev->lock);
1342                 if (ret < 0)
1343                         return ret;
1344
1345                 reg->val = le16_to_cpu(val);
1346         }
1347
1348         return 0;
1349 }
1350
1351 static int vidioc_s_register(struct file *file, void *priv,
1352                              struct v4l2_dbg_register *reg)
1353 {
1354         struct em28xx_fh      *fh  = priv;
1355         struct em28xx         *dev = fh->dev;
1356         __le16 buf;
1357         int    rc;
1358
1359         switch (reg->match.type) {
1360         case V4L2_CHIP_MATCH_AC97:
1361                 mutex_lock(&dev->lock);
1362                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1363                 mutex_unlock(&dev->lock);
1364
1365                 return rc;
1366         case V4L2_CHIP_MATCH_I2C_DRIVER:
1367                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1368                 return 0;
1369         case V4L2_CHIP_MATCH_I2C_ADDR:
1370                 /* TODO: is this correct? */
1371                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1372                 return 0;
1373         default:
1374                 if (!v4l2_chip_match_host(&reg->match))
1375                         return -EINVAL;
1376         }
1377
1378         /* Match host */
1379         buf = cpu_to_le16(reg->val);
1380
1381         mutex_lock(&dev->lock);
1382         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1383                                em28xx_reg_len(reg->reg));
1384         mutex_unlock(&dev->lock);
1385
1386         return rc;
1387 }
1388 #endif
1389
1390
1391 static int vidioc_cropcap(struct file *file, void *priv,
1392                                         struct v4l2_cropcap *cc)
1393 {
1394         struct em28xx_fh      *fh  = priv;
1395         struct em28xx         *dev = fh->dev;
1396
1397         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1398                 return -EINVAL;
1399
1400         cc->bounds.left = 0;
1401         cc->bounds.top = 0;
1402         cc->bounds.width = dev->width;
1403         cc->bounds.height = dev->height;
1404         cc->defrect = cc->bounds;
1405         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1406         cc->pixelaspect.denominator = 59;
1407
1408         return 0;
1409 }
1410
1411 static int vidioc_streamon(struct file *file, void *priv,
1412                                         enum v4l2_buf_type type)
1413 {
1414         struct em28xx_fh      *fh  = priv;
1415         struct em28xx         *dev = fh->dev;
1416         int                   rc;
1417
1418         rc = check_dev(dev);
1419         if (rc < 0)
1420                 return rc;
1421
1422
1423         mutex_lock(&dev->lock);
1424         rc = res_get(fh);
1425
1426         if (likely(rc >= 0))
1427                 rc = videobuf_streamon(&fh->vb_vidq);
1428
1429         mutex_unlock(&dev->lock);
1430
1431         return rc;
1432 }
1433
1434 static int vidioc_streamoff(struct file *file, void *priv,
1435                                         enum v4l2_buf_type type)
1436 {
1437         struct em28xx_fh      *fh  = priv;
1438         struct em28xx         *dev = fh->dev;
1439         int                   rc;
1440
1441         rc = check_dev(dev);
1442         if (rc < 0)
1443                 return rc;
1444
1445         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1446                 return -EINVAL;
1447         if (type != fh->type)
1448                 return -EINVAL;
1449
1450         mutex_lock(&dev->lock);
1451
1452         videobuf_streamoff(&fh->vb_vidq);
1453         res_free(fh);
1454
1455         mutex_unlock(&dev->lock);
1456
1457         return 0;
1458 }
1459
1460 static int vidioc_querycap(struct file *file, void  *priv,
1461                                         struct v4l2_capability *cap)
1462 {
1463         struct em28xx_fh      *fh  = priv;
1464         struct em28xx         *dev = fh->dev;
1465
1466         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1467         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1468         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1469
1470         cap->version = EM28XX_VERSION_CODE;
1471
1472         cap->capabilities =
1473                         V4L2_CAP_SLICED_VBI_CAPTURE |
1474                         V4L2_CAP_VIDEO_CAPTURE |
1475                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1476
1477         if (dev->audio_mode.has_audio)
1478                 cap->capabilities |= V4L2_CAP_AUDIO;
1479
1480         if (dev->tuner_type != TUNER_ABSENT)
1481                 cap->capabilities |= V4L2_CAP_TUNER;
1482
1483         return 0;
1484 }
1485
1486 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1487                                         struct v4l2_fmtdesc *f)
1488 {
1489         if (unlikely(f->index >= ARRAY_SIZE(format)))
1490                 return -EINVAL;
1491
1492         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1493         f->pixelformat = format[f->index].fourcc;
1494
1495         return 0;
1496 }
1497
1498 /* Sliced VBI ioctls */
1499 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1500                                         struct v4l2_format *f)
1501 {
1502         struct em28xx_fh      *fh  = priv;
1503         struct em28xx         *dev = fh->dev;
1504         int                   rc;
1505
1506         rc = check_dev(dev);
1507         if (rc < 0)
1508                 return rc;
1509
1510         mutex_lock(&dev->lock);
1511
1512         f->fmt.sliced.service_set = 0;
1513         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1514
1515         if (f->fmt.sliced.service_set == 0)
1516                 rc = -EINVAL;
1517
1518         mutex_unlock(&dev->lock);
1519
1520         return rc;
1521 }
1522
1523 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1524                         struct v4l2_format *f)
1525 {
1526         struct em28xx_fh      *fh  = priv;
1527         struct em28xx         *dev = fh->dev;
1528         int                   rc;
1529
1530         rc = check_dev(dev);
1531         if (rc < 0)
1532                 return rc;
1533
1534         mutex_lock(&dev->lock);
1535         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1536         mutex_unlock(&dev->lock);
1537
1538         if (f->fmt.sliced.service_set == 0)
1539                 return -EINVAL;
1540
1541         return 0;
1542 }
1543
1544
1545 static int vidioc_reqbufs(struct file *file, void *priv,
1546                           struct v4l2_requestbuffers *rb)
1547 {
1548         struct em28xx_fh      *fh  = priv;
1549         struct em28xx         *dev = fh->dev;
1550         int                   rc;
1551
1552         rc = check_dev(dev);
1553         if (rc < 0)
1554                 return rc;
1555
1556         return videobuf_reqbufs(&fh->vb_vidq, rb);
1557 }
1558
1559 static int vidioc_querybuf(struct file *file, void *priv,
1560                            struct v4l2_buffer *b)
1561 {
1562         struct em28xx_fh      *fh  = priv;
1563         struct em28xx         *dev = fh->dev;
1564         int                   rc;
1565
1566         rc = check_dev(dev);
1567         if (rc < 0)
1568                 return rc;
1569
1570         return videobuf_querybuf(&fh->vb_vidq, b);
1571 }
1572
1573 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1574 {
1575         struct em28xx_fh      *fh  = priv;
1576         struct em28xx         *dev = fh->dev;
1577         int                   rc;
1578
1579         rc = check_dev(dev);
1580         if (rc < 0)
1581                 return rc;
1582
1583         return videobuf_qbuf(&fh->vb_vidq, b);
1584 }
1585
1586 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1587 {
1588         struct em28xx_fh      *fh  = priv;
1589         struct em28xx         *dev = fh->dev;
1590         int                   rc;
1591
1592         rc = check_dev(dev);
1593         if (rc < 0)
1594                 return rc;
1595
1596         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1597 }
1598
1599 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1600 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1601 {
1602         struct em28xx_fh  *fh = priv;
1603
1604         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1605 }
1606 #endif
1607
1608
1609 /* ----------------------------------------------------------- */
1610 /* RADIO ESPECIFIC IOCTLS                                      */
1611 /* ----------------------------------------------------------- */
1612
1613 static int radio_querycap(struct file *file, void  *priv,
1614                           struct v4l2_capability *cap)
1615 {
1616         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1617
1618         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1619         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1620         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1621
1622         cap->version = EM28XX_VERSION_CODE;
1623         cap->capabilities = V4L2_CAP_TUNER;
1624         return 0;
1625 }
1626
1627 static int radio_g_tuner(struct file *file, void *priv,
1628                          struct v4l2_tuner *t)
1629 {
1630         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1631
1632         if (unlikely(t->index > 0))
1633                 return -EINVAL;
1634
1635         strcpy(t->name, "Radio");
1636         t->type = V4L2_TUNER_RADIO;
1637
1638         mutex_lock(&dev->lock);
1639         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1640         mutex_unlock(&dev->lock);
1641
1642         return 0;
1643 }
1644
1645 static int radio_enum_input(struct file *file, void *priv,
1646                             struct v4l2_input *i)
1647 {
1648         if (i->index != 0)
1649                 return -EINVAL;
1650         strcpy(i->name, "Radio");
1651         i->type = V4L2_INPUT_TYPE_TUNER;
1652
1653         return 0;
1654 }
1655
1656 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1657 {
1658         if (unlikely(a->index))
1659                 return -EINVAL;
1660
1661         strcpy(a->name, "Radio");
1662         return 0;
1663 }
1664
1665 static int radio_s_tuner(struct file *file, void *priv,
1666                          struct v4l2_tuner *t)
1667 {
1668         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1669
1670         if (0 != t->index)
1671                 return -EINVAL;
1672
1673         mutex_lock(&dev->lock);
1674         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1675         mutex_unlock(&dev->lock);
1676
1677         return 0;
1678 }
1679
1680 static int radio_s_audio(struct file *file, void *fh,
1681                          struct v4l2_audio *a)
1682 {
1683         return 0;
1684 }
1685
1686 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1687 {
1688         return 0;
1689 }
1690
1691 static int radio_queryctrl(struct file *file, void *priv,
1692                            struct v4l2_queryctrl *qc)
1693 {
1694         int i;
1695
1696         if (qc->id <  V4L2_CID_BASE ||
1697                 qc->id >= V4L2_CID_LASTP1)
1698                 return -EINVAL;
1699
1700         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
1701                 if (qc->id && qc->id == ac97_qctrl[i].id) {
1702                         memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
1703                         return 0;
1704                 }
1705         }
1706
1707         return -EINVAL;
1708 }
1709
1710 /*
1711  * em28xx_v4l2_open()
1712  * inits the device and starts isoc transfer
1713  */
1714 static int em28xx_v4l2_open(struct file *filp)
1715 {
1716         int minor = video_devdata(filp)->minor;
1717         int errCode = 0, radio;
1718         struct em28xx *dev;
1719         enum v4l2_buf_type fh_type;
1720         struct em28xx_fh *fh;
1721         enum v4l2_field field;
1722
1723         dev = em28xx_get_device(minor, &fh_type, &radio);
1724
1725         if (NULL == dev)
1726                 return -ENODEV;
1727
1728         mutex_lock(&dev->lock);
1729
1730         em28xx_videodbg("open minor=%d type=%s users=%d\n",
1731                                 minor, v4l2_type_names[fh_type], dev->users);
1732
1733
1734         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1735         if (!fh) {
1736                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1737                 mutex_unlock(&dev->lock);
1738                 return -ENOMEM;
1739         }
1740         fh->dev = dev;
1741         fh->radio = radio;
1742         fh->type = fh_type;
1743         filp->private_data = fh;
1744
1745         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1746                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1747                 em28xx_set_alternate(dev);
1748                 em28xx_resolution_set(dev);
1749
1750                 /* Needed, since GPIO might have disabled power of
1751                    some i2c device
1752                  */
1753                 em28xx_wake_i2c(dev);
1754
1755         }
1756         if (fh->radio) {
1757                 em28xx_videodbg("video_open: setting radio device\n");
1758                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1759         }
1760
1761         dev->users++;
1762
1763         if (dev->progressive)
1764                 field = V4L2_FIELD_NONE;
1765         else
1766                 field = V4L2_FIELD_INTERLACED;
1767
1768         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1769                         NULL, &dev->slock, fh->type, field,
1770                         sizeof(struct em28xx_buffer), fh);
1771
1772         mutex_unlock(&dev->lock);
1773
1774         return errCode;
1775 }
1776
1777 /*
1778  * em28xx_realease_resources()
1779  * unregisters the v4l2,i2c and usb devices
1780  * called when the device gets disconected or at module unload
1781 */
1782 void em28xx_release_analog_resources(struct em28xx *dev)
1783 {
1784
1785         /*FIXME: I2C IR should be disconnected */
1786
1787         if (dev->radio_dev) {
1788                 if (-1 != dev->radio_dev->minor)
1789                         video_unregister_device(dev->radio_dev);
1790                 else
1791                         video_device_release(dev->radio_dev);
1792                 dev->radio_dev = NULL;
1793         }
1794         if (dev->vbi_dev) {
1795                 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1796                             dev->vbi_dev->num);
1797                 if (-1 != dev->vbi_dev->minor)
1798                         video_unregister_device(dev->vbi_dev);
1799                 else
1800                         video_device_release(dev->vbi_dev);
1801                 dev->vbi_dev = NULL;
1802         }
1803         if (dev->vdev) {
1804                 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1805                             dev->vdev->num);
1806                 if (-1 != dev->vdev->minor)
1807                         video_unregister_device(dev->vdev);
1808                 else
1809                         video_device_release(dev->vdev);
1810                 dev->vdev = NULL;
1811         }
1812 }
1813
1814 /*
1815  * em28xx_v4l2_close()
1816  * stops streaming and deallocates all resources allocated by the v4l2
1817  * calls and ioctls
1818  */
1819 static int em28xx_v4l2_close(struct file *filp)
1820 {
1821         struct em28xx_fh *fh  = filp->private_data;
1822         struct em28xx    *dev = fh->dev;
1823         int              errCode;
1824
1825         em28xx_videodbg("users=%d\n", dev->users);
1826
1827
1828         mutex_lock(&dev->lock);
1829         if (res_check(fh))
1830                 res_free(fh);
1831
1832         if (dev->users == 1) {
1833                 videobuf_stop(&fh->vb_vidq);
1834                 videobuf_mmap_free(&fh->vb_vidq);
1835
1836                 /* the device is already disconnect,
1837                    free the remaining resources */
1838                 if (dev->state & DEV_DISCONNECTED) {
1839                         em28xx_release_resources(dev);
1840                         mutex_unlock(&dev->lock);
1841                         kfree(dev);
1842                         return 0;
1843                 }
1844
1845                 /* Save some power by putting tuner to sleep */
1846                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
1847
1848                 /* do this before setting alternate! */
1849                 em28xx_uninit_isoc(dev);
1850                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1851
1852                 /* set alternate 0 */
1853                 dev->alt = 0;
1854                 em28xx_videodbg("setting alternate 0\n");
1855                 errCode = usb_set_interface(dev->udev, 0, 0);
1856                 if (errCode < 0) {
1857                         em28xx_errdev("cannot change alternate number to "
1858                                         "0 (error=%i)\n", errCode);
1859                 }
1860         }
1861         kfree(fh);
1862         dev->users--;
1863         wake_up_interruptible_nr(&dev->open, 1);
1864         mutex_unlock(&dev->lock);
1865         return 0;
1866 }
1867
1868 /*
1869  * em28xx_v4l2_read()
1870  * will allocate buffers when called for the first time
1871  */
1872 static ssize_t
1873 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1874                  loff_t *pos)
1875 {
1876         struct em28xx_fh *fh = filp->private_data;
1877         struct em28xx *dev = fh->dev;
1878         int rc;
1879
1880         rc = check_dev(dev);
1881         if (rc < 0)
1882                 return rc;
1883
1884         /* FIXME: read() is not prepared to allow changing the video
1885            resolution while streaming. Seems a bug at em28xx_set_fmt
1886          */
1887
1888         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1889                 mutex_lock(&dev->lock);
1890                 rc = res_get(fh);
1891                 mutex_unlock(&dev->lock);
1892
1893                 if (unlikely(rc < 0))
1894                         return rc;
1895
1896                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1897                                         filp->f_flags & O_NONBLOCK);
1898         }
1899         return 0;
1900 }
1901
1902 /*
1903  * em28xx_v4l2_poll()
1904  * will allocate buffers when called for the first time
1905  */
1906 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
1907 {
1908         struct em28xx_fh *fh = filp->private_data;
1909         struct em28xx *dev = fh->dev;
1910         int rc;
1911
1912         rc = check_dev(dev);
1913         if (rc < 0)
1914                 return rc;
1915
1916         mutex_lock(&dev->lock);
1917         rc = res_get(fh);
1918         mutex_unlock(&dev->lock);
1919
1920         if (unlikely(rc < 0))
1921                 return POLLERR;
1922
1923         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1924                 return POLLERR;
1925
1926         return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1927 }
1928
1929 /*
1930  * em28xx_v4l2_mmap()
1931  */
1932 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1933 {
1934         struct em28xx_fh *fh    = filp->private_data;
1935         struct em28xx    *dev   = fh->dev;
1936         int              rc;
1937
1938         rc = check_dev(dev);
1939         if (rc < 0)
1940                 return rc;
1941
1942         mutex_lock(&dev->lock);
1943         rc = res_get(fh);
1944         mutex_unlock(&dev->lock);
1945
1946         if (unlikely(rc < 0))
1947                 return rc;
1948
1949         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1950
1951         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1952                 (unsigned long)vma->vm_start,
1953                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1954                 rc);
1955
1956         return rc;
1957 }
1958
1959 static const struct v4l2_file_operations em28xx_v4l_fops = {
1960         .owner         = THIS_MODULE,
1961         .open          = em28xx_v4l2_open,
1962         .release       = em28xx_v4l2_close,
1963         .read          = em28xx_v4l2_read,
1964         .poll          = em28xx_v4l2_poll,
1965         .mmap          = em28xx_v4l2_mmap,
1966         .ioctl         = video_ioctl2,
1967 };
1968
1969 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1970         .vidioc_querycap            = vidioc_querycap,
1971         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1972         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1973         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1974         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1975         .vidioc_g_audio             = vidioc_g_audio,
1976         .vidioc_s_audio             = vidioc_s_audio,
1977         .vidioc_cropcap             = vidioc_cropcap,
1978
1979         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
1980         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1981         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
1982
1983         .vidioc_reqbufs             = vidioc_reqbufs,
1984         .vidioc_querybuf            = vidioc_querybuf,
1985         .vidioc_qbuf                = vidioc_qbuf,
1986         .vidioc_dqbuf               = vidioc_dqbuf,
1987         .vidioc_s_std               = vidioc_s_std,
1988         .vidioc_g_parm              = vidioc_g_parm,
1989         .vidioc_s_parm              = vidioc_s_parm,
1990         .vidioc_enum_input          = vidioc_enum_input,
1991         .vidioc_g_input             = vidioc_g_input,
1992         .vidioc_s_input             = vidioc_s_input,
1993         .vidioc_queryctrl           = vidioc_queryctrl,
1994         .vidioc_g_ctrl              = vidioc_g_ctrl,
1995         .vidioc_s_ctrl              = vidioc_s_ctrl,
1996         .vidioc_streamon            = vidioc_streamon,
1997         .vidioc_streamoff           = vidioc_streamoff,
1998         .vidioc_g_tuner             = vidioc_g_tuner,
1999         .vidioc_s_tuner             = vidioc_s_tuner,
2000         .vidioc_g_frequency         = vidioc_g_frequency,
2001         .vidioc_s_frequency         = vidioc_s_frequency,
2002 #ifdef CONFIG_VIDEO_ADV_DEBUG
2003         .vidioc_g_register          = vidioc_g_register,
2004         .vidioc_s_register          = vidioc_s_register,
2005         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
2006 #endif
2007 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2008         .vidiocgmbuf                = vidiocgmbuf,
2009 #endif
2010 };
2011
2012 static const struct video_device em28xx_video_template = {
2013         .fops                       = &em28xx_v4l_fops,
2014         .release                    = video_device_release,
2015         .ioctl_ops                  = &video_ioctl_ops,
2016
2017         .minor                      = -1,
2018
2019         .tvnorms                    = V4L2_STD_ALL,
2020         .current_norm               = V4L2_STD_PAL,
2021 };
2022
2023 static const struct v4l2_file_operations radio_fops = {
2024         .owner         = THIS_MODULE,
2025         .open          = em28xx_v4l2_open,
2026         .release       = em28xx_v4l2_close,
2027         .ioctl         = video_ioctl2,
2028 };
2029
2030 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2031         .vidioc_querycap      = radio_querycap,
2032         .vidioc_g_tuner       = radio_g_tuner,
2033         .vidioc_enum_input    = radio_enum_input,
2034         .vidioc_g_audio       = radio_g_audio,
2035         .vidioc_s_tuner       = radio_s_tuner,
2036         .vidioc_s_audio       = radio_s_audio,
2037         .vidioc_s_input       = radio_s_input,
2038         .vidioc_queryctrl     = radio_queryctrl,
2039         .vidioc_g_ctrl        = vidioc_g_ctrl,
2040         .vidioc_s_ctrl        = vidioc_s_ctrl,
2041         .vidioc_g_frequency   = vidioc_g_frequency,
2042         .vidioc_s_frequency   = vidioc_s_frequency,
2043 #ifdef CONFIG_VIDEO_ADV_DEBUG
2044         .vidioc_g_register    = vidioc_g_register,
2045         .vidioc_s_register    = vidioc_s_register,
2046 #endif
2047 };
2048
2049 static struct video_device em28xx_radio_template = {
2050         .name                 = "em28xx-radio",
2051         .fops                 = &radio_fops,
2052         .ioctl_ops            = &radio_ioctl_ops,
2053         .minor                = -1,
2054 };
2055
2056 /******************************** usb interface ******************************/
2057
2058
2059
2060 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2061                                         const struct video_device *template,
2062                                         const char *type_name)
2063 {
2064         struct video_device *vfd;
2065
2066         vfd = video_device_alloc();
2067         if (NULL == vfd)
2068                 return NULL;
2069
2070         *vfd            = *template;
2071         vfd->minor      = -1;
2072         vfd->v4l2_dev   = &dev->v4l2_dev;
2073         vfd->release    = video_device_release;
2074         vfd->debug      = video_debug;
2075
2076         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2077                  dev->name, type_name);
2078
2079         return vfd;
2080 }
2081
2082 int em28xx_register_analog_devices(struct em28xx *dev)
2083 {
2084       u8 val;
2085         int ret;
2086
2087         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2088                 dev->name,
2089                 (EM28XX_VERSION_CODE >> 16) & 0xff,
2090                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2091
2092         /* set default norm */
2093         dev->norm = em28xx_video_template.current_norm;
2094         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2095         dev->ctl_input = 0;
2096
2097         /* Analog specific initialization */
2098         dev->format = &format[0];
2099         em28xx_set_video_format(dev, format[0].fourcc,
2100                                 norm_maxw(dev), norm_maxh(dev));
2101
2102         video_mux(dev, dev->ctl_input);
2103
2104         /* Audio defaults */
2105         dev->mute = 1;
2106         dev->volume = 0x1f;
2107
2108         /* enable vbi capturing */
2109
2110 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2111         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2112         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2113                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
2114         em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
2115
2116         em28xx_set_outfmt(dev);
2117         em28xx_colorlevels_set_default(dev);
2118         em28xx_compression_disable(dev);
2119
2120         /* allocate and fill video video_device struct */
2121         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2122         if (!dev->vdev) {
2123                 em28xx_errdev("cannot allocate video_device.\n");
2124                 return -ENODEV;
2125         }
2126
2127         /* register v4l2 video video_device */
2128         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2129                                        video_nr[dev->devno]);
2130         if (ret) {
2131                 em28xx_errdev("unable to register video device (error=%i).\n",
2132                               ret);
2133                 return ret;
2134         }
2135
2136         /* Allocate and fill vbi video_device struct */
2137         dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2138
2139         /* register v4l2 vbi video_device */
2140         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2141                                         vbi_nr[dev->devno]);
2142         if (ret < 0) {
2143                 em28xx_errdev("unable to register vbi device\n");
2144                 return ret;
2145         }
2146
2147         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2148                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2149                                                   "radio");
2150                 if (!dev->radio_dev) {
2151                         em28xx_errdev("cannot allocate video_device.\n");
2152                         return -ENODEV;
2153                 }
2154                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2155                                             radio_nr[dev->devno]);
2156                 if (ret < 0) {
2157                         em28xx_errdev("can't register radio device\n");
2158                         return ret;
2159                 }
2160                 em28xx_info("Registered radio device as /dev/radio%d\n",
2161                             dev->radio_dev->num);
2162         }
2163
2164         em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2165                                 dev->vdev->num, dev->vbi_dev->num);
2166
2167         return 0;
2168 }