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         switch (a->index) {
1009         case EM28XX_AMUX_VIDEO:
1010                 strcpy(a->name, "Television");
1011                 break;
1012         case EM28XX_AMUX_LINE_IN:
1013                 strcpy(a->name, "Line In");
1014                 break;
1015         case EM28XX_AMUX_VIDEO2:
1016                 strcpy(a->name, "Television alt");
1017                 break;
1018         case EM28XX_AMUX_PHONE:
1019                 strcpy(a->name, "Phone");
1020                 break;
1021         case EM28XX_AMUX_MIC:
1022                 strcpy(a->name, "Mic");
1023                 break;
1024         case EM28XX_AMUX_CD:
1025                 strcpy(a->name, "CD");
1026                 break;
1027         case EM28XX_AMUX_AUX:
1028                 strcpy(a->name, "Aux");
1029                 break;
1030         case EM28XX_AMUX_PCM_OUT:
1031                 strcpy(a->name, "PCM");
1032                 break;
1033         default:
1034                 return -EINVAL;
1035         }
1036
1037         a->index = dev->ctl_ainput;
1038         a->capability = V4L2_AUDCAP_STEREO;
1039
1040         return 0;
1041 }
1042
1043 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1044 {
1045         struct em28xx_fh   *fh  = priv;
1046         struct em28xx      *dev = fh->dev;
1047
1048
1049         if (a->index >= MAX_EM28XX_INPUT)
1050                 return -EINVAL;
1051         if (0 == INPUT(a->index)->type)
1052                 return -EINVAL;
1053
1054         mutex_lock(&dev->lock);
1055
1056         dev->ctl_ainput = INPUT(a->index)->amux;
1057         dev->ctl_aoutput = INPUT(a->index)->aout;
1058
1059         if (!dev->ctl_aoutput)
1060                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1061
1062         mutex_unlock(&dev->lock);
1063         return 0;
1064 }
1065
1066 static int vidioc_queryctrl(struct file *file, void *priv,
1067                                 struct v4l2_queryctrl *qc)
1068 {
1069         struct em28xx_fh      *fh  = priv;
1070         struct em28xx         *dev = fh->dev;
1071         int                   id  = qc->id;
1072         int                   rc;
1073
1074         rc = check_dev(dev);
1075         if (rc < 0)
1076                 return rc;
1077
1078         memset(qc, 0, sizeof(*qc));
1079
1080         qc->id = id;
1081
1082         /* enumberate AC97 controls */
1083         if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1084                 rc = ac97_queryctrl(qc);
1085                 if (!rc)
1086                         return 0;
1087         }
1088
1089         /* enumberate V4L2 device controls */
1090         mutex_lock(&dev->lock);
1091         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1092         mutex_unlock(&dev->lock);
1093
1094         if (qc->type)
1095                 return 0;
1096         else
1097                 return -EINVAL;
1098 }
1099
1100 static int vidioc_g_ctrl(struct file *file, void *priv,
1101                                 struct v4l2_control *ctrl)
1102 {
1103         struct em28xx_fh      *fh  = priv;
1104         struct em28xx         *dev = fh->dev;
1105         int                   rc;
1106
1107         rc = check_dev(dev);
1108         if (rc < 0)
1109                 return rc;
1110         rc = 0;
1111
1112         mutex_lock(&dev->lock);
1113
1114         /* Set an AC97 control */
1115         if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1116                 rc = ac97_get_ctrl(dev, ctrl);
1117         else
1118                 rc = 1;
1119
1120         /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1121         if (rc == 1) {
1122                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1123                 rc = 0;
1124         }
1125
1126         mutex_unlock(&dev->lock);
1127         return rc;
1128 }
1129
1130 static int vidioc_s_ctrl(struct file *file, void *priv,
1131                                 struct v4l2_control *ctrl)
1132 {
1133         struct em28xx_fh      *fh  = priv;
1134         struct em28xx         *dev = fh->dev;
1135         int                   rc;
1136
1137         rc = check_dev(dev);
1138         if (rc < 0)
1139                 return rc;
1140
1141         mutex_lock(&dev->lock);
1142
1143         /* Set an AC97 control */
1144         if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1145                 rc = ac97_set_ctrl(dev, ctrl);
1146         else
1147                 rc = 1;
1148
1149         /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1150         if (rc == 1) {
1151                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1152                 /* FIXME: should be returning a meaninful value */
1153                 rc = 0;
1154         }
1155
1156         mutex_unlock(&dev->lock);
1157         return rc;
1158 }
1159
1160 static int vidioc_g_tuner(struct file *file, void *priv,
1161                                 struct v4l2_tuner *t)
1162 {
1163         struct em28xx_fh      *fh  = priv;
1164         struct em28xx         *dev = fh->dev;
1165         int                   rc;
1166
1167         rc = check_dev(dev);
1168         if (rc < 0)
1169                 return rc;
1170
1171         if (0 != t->index)
1172                 return -EINVAL;
1173
1174         strcpy(t->name, "Tuner");
1175
1176         mutex_lock(&dev->lock);
1177         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1178         mutex_unlock(&dev->lock);
1179
1180         return 0;
1181 }
1182
1183 static int vidioc_s_tuner(struct file *file, void *priv,
1184                                 struct v4l2_tuner *t)
1185 {
1186         struct em28xx_fh      *fh  = priv;
1187         struct em28xx         *dev = fh->dev;
1188         int                   rc;
1189
1190         rc = check_dev(dev);
1191         if (rc < 0)
1192                 return rc;
1193
1194         if (0 != t->index)
1195                 return -EINVAL;
1196
1197         mutex_lock(&dev->lock);
1198         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1199         mutex_unlock(&dev->lock);
1200
1201         return 0;
1202 }
1203
1204 static int vidioc_g_frequency(struct file *file, void *priv,
1205                                 struct v4l2_frequency *f)
1206 {
1207         struct em28xx_fh      *fh  = priv;
1208         struct em28xx         *dev = fh->dev;
1209
1210         mutex_lock(&dev->lock);
1211         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1212         f->frequency = dev->ctl_freq;
1213         mutex_unlock(&dev->lock);
1214
1215         return 0;
1216 }
1217
1218 static int vidioc_s_frequency(struct file *file, void *priv,
1219                                 struct v4l2_frequency *f)
1220 {
1221         struct em28xx_fh      *fh  = priv;
1222         struct em28xx         *dev = fh->dev;
1223         int                   rc;
1224
1225         rc = check_dev(dev);
1226         if (rc < 0)
1227                 return rc;
1228
1229         if (0 != f->tuner)
1230                 return -EINVAL;
1231
1232         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1233                 return -EINVAL;
1234         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1235                 return -EINVAL;
1236
1237         mutex_lock(&dev->lock);
1238
1239         dev->ctl_freq = f->frequency;
1240         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1241
1242         mutex_unlock(&dev->lock);
1243
1244         return 0;
1245 }
1246
1247 #ifdef CONFIG_VIDEO_ADV_DEBUG
1248 static int em28xx_reg_len(int reg)
1249 {
1250         switch (reg) {
1251         case EM28XX_R40_AC97LSB:
1252         case EM28XX_R30_HSCALELOW:
1253         case EM28XX_R32_VSCALELOW:
1254                 return 2;
1255         default:
1256                 return 1;
1257         }
1258 }
1259
1260 static int vidioc_g_chip_ident(struct file *file, void *priv,
1261                struct v4l2_dbg_chip_ident *chip)
1262 {
1263         struct em28xx_fh      *fh  = priv;
1264         struct em28xx         *dev = fh->dev;
1265
1266         chip->ident = V4L2_IDENT_NONE;
1267         chip->revision = 0;
1268
1269         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1270
1271         return 0;
1272 }
1273
1274
1275 static int vidioc_g_register(struct file *file, void *priv,
1276                              struct v4l2_dbg_register *reg)
1277 {
1278         struct em28xx_fh      *fh  = priv;
1279         struct em28xx         *dev = fh->dev;
1280         int ret;
1281
1282         switch (reg->match.type) {
1283         case V4L2_CHIP_MATCH_AC97:
1284                 mutex_lock(&dev->lock);
1285                 ret = em28xx_read_ac97(dev, reg->reg);
1286                 mutex_unlock(&dev->lock);
1287                 if (ret < 0)
1288                         return ret;
1289
1290                 reg->val = ret;
1291                 reg->size = 1;
1292                 return 0;
1293         case V4L2_CHIP_MATCH_I2C_DRIVER:
1294                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1295                 return 0;
1296         case V4L2_CHIP_MATCH_I2C_ADDR:
1297                 /* Not supported yet */
1298                 return -EINVAL;
1299         default:
1300                 if (!v4l2_chip_match_host(&reg->match))
1301                         return -EINVAL;
1302         }
1303
1304         /* Match host */
1305         reg->size = em28xx_reg_len(reg->reg);
1306         if (reg->size == 1) {
1307                 mutex_lock(&dev->lock);
1308                 ret = em28xx_read_reg(dev, reg->reg);
1309                 mutex_unlock(&dev->lock);
1310
1311                 if (ret < 0)
1312                         return ret;
1313
1314                 reg->val = ret;
1315         } else {
1316                 __le16 val = 0;
1317                 mutex_lock(&dev->lock);
1318                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1319                                                    reg->reg, (char *)&val, 2);
1320                 mutex_unlock(&dev->lock);
1321                 if (ret < 0)
1322                         return ret;
1323
1324                 reg->val = le16_to_cpu(val);
1325         }
1326
1327         return 0;
1328 }
1329
1330 static int vidioc_s_register(struct file *file, void *priv,
1331                              struct v4l2_dbg_register *reg)
1332 {
1333         struct em28xx_fh      *fh  = priv;
1334         struct em28xx         *dev = fh->dev;
1335         __le16 buf;
1336         int    rc;
1337
1338         switch (reg->match.type) {
1339         case V4L2_CHIP_MATCH_AC97:
1340                 mutex_lock(&dev->lock);
1341                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1342                 mutex_unlock(&dev->lock);
1343
1344                 return rc;
1345         case V4L2_CHIP_MATCH_I2C_DRIVER:
1346                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1347                 return 0;
1348         case V4L2_CHIP_MATCH_I2C_ADDR:
1349                 /* Not supported yet */
1350                 return -EINVAL;
1351         default:
1352                 if (!v4l2_chip_match_host(&reg->match))
1353                         return -EINVAL;
1354         }
1355
1356         /* Match host */
1357         buf = cpu_to_le16(reg->val);
1358
1359         mutex_lock(&dev->lock);
1360         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1361                                em28xx_reg_len(reg->reg));
1362         mutex_unlock(&dev->lock);
1363
1364         return rc;
1365 }
1366 #endif
1367
1368
1369 static int vidioc_cropcap(struct file *file, void *priv,
1370                                         struct v4l2_cropcap *cc)
1371 {
1372         struct em28xx_fh      *fh  = priv;
1373         struct em28xx         *dev = fh->dev;
1374
1375         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1376                 return -EINVAL;
1377
1378         cc->bounds.left = 0;
1379         cc->bounds.top = 0;
1380         cc->bounds.width = dev->width;
1381         cc->bounds.height = dev->height;
1382         cc->defrect = cc->bounds;
1383         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1384         cc->pixelaspect.denominator = 59;
1385
1386         return 0;
1387 }
1388
1389 static int vidioc_streamon(struct file *file, void *priv,
1390                                         enum v4l2_buf_type type)
1391 {
1392         struct em28xx_fh      *fh  = priv;
1393         struct em28xx         *dev = fh->dev;
1394         int                   rc;
1395
1396         rc = check_dev(dev);
1397         if (rc < 0)
1398                 return rc;
1399
1400
1401         mutex_lock(&dev->lock);
1402         rc = res_get(fh);
1403
1404         if (likely(rc >= 0))
1405                 rc = videobuf_streamon(&fh->vb_vidq);
1406
1407         mutex_unlock(&dev->lock);
1408
1409         return rc;
1410 }
1411
1412 static int vidioc_streamoff(struct file *file, void *priv,
1413                                         enum v4l2_buf_type type)
1414 {
1415         struct em28xx_fh      *fh  = priv;
1416         struct em28xx         *dev = fh->dev;
1417         int                   rc;
1418
1419         rc = check_dev(dev);
1420         if (rc < 0)
1421                 return rc;
1422
1423         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1424                 return -EINVAL;
1425         if (type != fh->type)
1426                 return -EINVAL;
1427
1428         mutex_lock(&dev->lock);
1429
1430         videobuf_streamoff(&fh->vb_vidq);
1431         res_free(fh);
1432
1433         mutex_unlock(&dev->lock);
1434
1435         return 0;
1436 }
1437
1438 static int vidioc_querycap(struct file *file, void  *priv,
1439                                         struct v4l2_capability *cap)
1440 {
1441         struct em28xx_fh      *fh  = priv;
1442         struct em28xx         *dev = fh->dev;
1443
1444         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1445         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1446         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1447
1448         cap->version = EM28XX_VERSION_CODE;
1449
1450         cap->capabilities =
1451                         V4L2_CAP_SLICED_VBI_CAPTURE |
1452                         V4L2_CAP_VIDEO_CAPTURE |
1453                         V4L2_CAP_AUDIO |
1454                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1455
1456         if (dev->tuner_type != TUNER_ABSENT)
1457                 cap->capabilities |= V4L2_CAP_TUNER;
1458
1459         return 0;
1460 }
1461
1462 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1463                                         struct v4l2_fmtdesc *f)
1464 {
1465         if (unlikely(f->index >= ARRAY_SIZE(format)))
1466                 return -EINVAL;
1467
1468         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1469         f->pixelformat = format[f->index].fourcc;
1470
1471         return 0;
1472 }
1473
1474 /* Sliced VBI ioctls */
1475 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1476                                         struct v4l2_format *f)
1477 {
1478         struct em28xx_fh      *fh  = priv;
1479         struct em28xx         *dev = fh->dev;
1480         int                   rc;
1481
1482         rc = check_dev(dev);
1483         if (rc < 0)
1484                 return rc;
1485
1486         mutex_lock(&dev->lock);
1487
1488         f->fmt.sliced.service_set = 0;
1489         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1490
1491         if (f->fmt.sliced.service_set == 0)
1492                 rc = -EINVAL;
1493
1494         mutex_unlock(&dev->lock);
1495
1496         return rc;
1497 }
1498
1499 static int vidioc_try_set_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         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1512         mutex_unlock(&dev->lock);
1513
1514         if (f->fmt.sliced.service_set == 0)
1515                 return -EINVAL;
1516
1517         return 0;
1518 }
1519
1520
1521 static int vidioc_reqbufs(struct file *file, void *priv,
1522                           struct v4l2_requestbuffers *rb)
1523 {
1524         struct em28xx_fh      *fh  = priv;
1525         struct em28xx         *dev = fh->dev;
1526         int                   rc;
1527
1528         rc = check_dev(dev);
1529         if (rc < 0)
1530                 return rc;
1531
1532         return videobuf_reqbufs(&fh->vb_vidq, rb);
1533 }
1534
1535 static int vidioc_querybuf(struct file *file, void *priv,
1536                            struct v4l2_buffer *b)
1537 {
1538         struct em28xx_fh      *fh  = priv;
1539         struct em28xx         *dev = fh->dev;
1540         int                   rc;
1541
1542         rc = check_dev(dev);
1543         if (rc < 0)
1544                 return rc;
1545
1546         return videobuf_querybuf(&fh->vb_vidq, b);
1547 }
1548
1549 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1550 {
1551         struct em28xx_fh      *fh  = priv;
1552         struct em28xx         *dev = fh->dev;
1553         int                   rc;
1554
1555         rc = check_dev(dev);
1556         if (rc < 0)
1557                 return rc;
1558
1559         return videobuf_qbuf(&fh->vb_vidq, b);
1560 }
1561
1562 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1563 {
1564         struct em28xx_fh      *fh  = priv;
1565         struct em28xx         *dev = fh->dev;
1566         int                   rc;
1567
1568         rc = check_dev(dev);
1569         if (rc < 0)
1570                 return rc;
1571
1572         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1573 }
1574
1575 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1576 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1577 {
1578         struct em28xx_fh  *fh = priv;
1579
1580         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1581 }
1582 #endif
1583
1584
1585 /* ----------------------------------------------------------- */
1586 /* RADIO ESPECIFIC IOCTLS                                      */
1587 /* ----------------------------------------------------------- */
1588
1589 static int radio_querycap(struct file *file, void  *priv,
1590                           struct v4l2_capability *cap)
1591 {
1592         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1593
1594         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1595         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1596         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1597
1598         cap->version = EM28XX_VERSION_CODE;
1599         cap->capabilities = V4L2_CAP_TUNER;
1600         return 0;
1601 }
1602
1603 static int radio_g_tuner(struct file *file, void *priv,
1604                          struct v4l2_tuner *t)
1605 {
1606         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1607
1608         if (unlikely(t->index > 0))
1609                 return -EINVAL;
1610
1611         strcpy(t->name, "Radio");
1612         t->type = V4L2_TUNER_RADIO;
1613
1614         mutex_lock(&dev->lock);
1615         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1616         mutex_unlock(&dev->lock);
1617
1618         return 0;
1619 }
1620
1621 static int radio_enum_input(struct file *file, void *priv,
1622                             struct v4l2_input *i)
1623 {
1624         if (i->index != 0)
1625                 return -EINVAL;
1626         strcpy(i->name, "Radio");
1627         i->type = V4L2_INPUT_TYPE_TUNER;
1628
1629         return 0;
1630 }
1631
1632 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1633 {
1634         if (unlikely(a->index))
1635                 return -EINVAL;
1636
1637         strcpy(a->name, "Radio");
1638         return 0;
1639 }
1640
1641 static int radio_s_tuner(struct file *file, void *priv,
1642                          struct v4l2_tuner *t)
1643 {
1644         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1645
1646         if (0 != t->index)
1647                 return -EINVAL;
1648
1649         mutex_lock(&dev->lock);
1650         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1651         mutex_unlock(&dev->lock);
1652
1653         return 0;
1654 }
1655
1656 static int radio_s_audio(struct file *file, void *fh,
1657                          struct v4l2_audio *a)
1658 {
1659         return 0;
1660 }
1661
1662 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1663 {
1664         return 0;
1665 }
1666
1667 static int radio_queryctrl(struct file *file, void *priv,
1668                            struct v4l2_queryctrl *qc)
1669 {
1670         int i;
1671
1672         if (qc->id <  V4L2_CID_BASE ||
1673                 qc->id >= V4L2_CID_LASTP1)
1674                 return -EINVAL;
1675
1676         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
1677                 if (qc->id && qc->id == ac97_qctrl[i].id) {
1678                         memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
1679                         return 0;
1680                 }
1681         }
1682
1683         return -EINVAL;
1684 }
1685
1686 /*
1687  * em28xx_v4l2_open()
1688  * inits the device and starts isoc transfer
1689  */
1690 static int em28xx_v4l2_open(struct file *filp)
1691 {
1692         int minor = video_devdata(filp)->minor;
1693         int errCode = 0, radio;
1694         struct em28xx *dev;
1695         enum v4l2_buf_type fh_type;
1696         struct em28xx_fh *fh;
1697         enum v4l2_field field;
1698
1699         dev = em28xx_get_device(minor, &fh_type, &radio);
1700
1701         if (NULL == dev)
1702                 return -ENODEV;
1703
1704         mutex_lock(&dev->lock);
1705
1706         em28xx_videodbg("open minor=%d type=%s users=%d\n",
1707                                 minor, v4l2_type_names[fh_type], dev->users);
1708
1709
1710         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1711         if (!fh) {
1712                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1713                 mutex_unlock(&dev->lock);
1714                 return -ENOMEM;
1715         }
1716         fh->dev = dev;
1717         fh->radio = radio;
1718         fh->type = fh_type;
1719         filp->private_data = fh;
1720
1721         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1722                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1723                 em28xx_set_alternate(dev);
1724                 em28xx_resolution_set(dev);
1725
1726                 /* Needed, since GPIO might have disabled power of
1727                    some i2c device
1728                  */
1729                 em28xx_wake_i2c(dev);
1730
1731         }
1732         if (fh->radio) {
1733                 em28xx_videodbg("video_open: setting radio device\n");
1734                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1735         }
1736
1737         dev->users++;
1738
1739         if (dev->progressive)
1740                 field = V4L2_FIELD_NONE;
1741         else
1742                 field = V4L2_FIELD_INTERLACED;
1743
1744         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
1745                         NULL, &dev->slock, fh->type, field,
1746                         sizeof(struct em28xx_buffer), fh);
1747
1748         mutex_unlock(&dev->lock);
1749
1750         return errCode;
1751 }
1752
1753 /*
1754  * em28xx_realease_resources()
1755  * unregisters the v4l2,i2c and usb devices
1756  * called when the device gets disconected or at module unload
1757 */
1758 void em28xx_release_analog_resources(struct em28xx *dev)
1759 {
1760
1761         /*FIXME: I2C IR should be disconnected */
1762
1763         if (dev->radio_dev) {
1764                 if (-1 != dev->radio_dev->minor)
1765                         video_unregister_device(dev->radio_dev);
1766                 else
1767                         video_device_release(dev->radio_dev);
1768                 dev->radio_dev = NULL;
1769         }
1770         if (dev->vbi_dev) {
1771                 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1772                             dev->vbi_dev->num);
1773                 if (-1 != dev->vbi_dev->minor)
1774                         video_unregister_device(dev->vbi_dev);
1775                 else
1776                         video_device_release(dev->vbi_dev);
1777                 dev->vbi_dev = NULL;
1778         }
1779         if (dev->vdev) {
1780                 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1781                             dev->vdev->num);
1782                 if (-1 != dev->vdev->minor)
1783                         video_unregister_device(dev->vdev);
1784                 else
1785                         video_device_release(dev->vdev);
1786                 dev->vdev = NULL;
1787         }
1788 }
1789
1790 /*
1791  * em28xx_v4l2_close()
1792  * stops streaming and deallocates all resources allocated by the v4l2
1793  * calls and ioctls
1794  */
1795 static int em28xx_v4l2_close(struct file *filp)
1796 {
1797         struct em28xx_fh *fh  = filp->private_data;
1798         struct em28xx    *dev = fh->dev;
1799         int              errCode;
1800
1801         em28xx_videodbg("users=%d\n", dev->users);
1802
1803
1804         mutex_lock(&dev->lock);
1805         if (res_check(fh))
1806                 res_free(fh);
1807
1808         if (dev->users == 1) {
1809                 videobuf_stop(&fh->vb_vidq);
1810                 videobuf_mmap_free(&fh->vb_vidq);
1811
1812                 /* the device is already disconnect,
1813                    free the remaining resources */
1814                 if (dev->state & DEV_DISCONNECTED) {
1815                         em28xx_release_resources(dev);
1816                         mutex_unlock(&dev->lock);
1817                         kfree(dev);
1818                         return 0;
1819                 }
1820
1821                 /* Save some power by putting tuner to sleep */
1822                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_standby);
1823
1824                 /* do this before setting alternate! */
1825                 em28xx_uninit_isoc(dev);
1826                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1827
1828                 /* set alternate 0 */
1829                 dev->alt = 0;
1830                 em28xx_videodbg("setting alternate 0\n");
1831                 errCode = usb_set_interface(dev->udev, 0, 0);
1832                 if (errCode < 0) {
1833                         em28xx_errdev("cannot change alternate number to "
1834                                         "0 (error=%i)\n", errCode);
1835                 }
1836         }
1837         kfree(fh);
1838         dev->users--;
1839         wake_up_interruptible_nr(&dev->open, 1);
1840         mutex_unlock(&dev->lock);
1841         return 0;
1842 }
1843
1844 /*
1845  * em28xx_v4l2_read()
1846  * will allocate buffers when called for the first time
1847  */
1848 static ssize_t
1849 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1850                  loff_t *pos)
1851 {
1852         struct em28xx_fh *fh = filp->private_data;
1853         struct em28xx *dev = fh->dev;
1854         int rc;
1855
1856         rc = check_dev(dev);
1857         if (rc < 0)
1858                 return rc;
1859
1860         /* FIXME: read() is not prepared to allow changing the video
1861            resolution while streaming. Seems a bug at em28xx_set_fmt
1862          */
1863
1864         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1865                 mutex_lock(&dev->lock);
1866                 rc = res_get(fh);
1867                 mutex_unlock(&dev->lock);
1868
1869                 if (unlikely(rc < 0))
1870                         return rc;
1871
1872                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1873                                         filp->f_flags & O_NONBLOCK);
1874         }
1875         return 0;
1876 }
1877
1878 /*
1879  * em28xx_v4l2_poll()
1880  * will allocate buffers when called for the first time
1881  */
1882 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
1883 {
1884         struct em28xx_fh *fh = filp->private_data;
1885         struct em28xx *dev = fh->dev;
1886         int rc;
1887
1888         rc = check_dev(dev);
1889         if (rc < 0)
1890                 return rc;
1891
1892         mutex_lock(&dev->lock);
1893         rc = res_get(fh);
1894         mutex_unlock(&dev->lock);
1895
1896         if (unlikely(rc < 0))
1897                 return POLLERR;
1898
1899         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1900                 return POLLERR;
1901
1902         return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1903 }
1904
1905 /*
1906  * em28xx_v4l2_mmap()
1907  */
1908 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1909 {
1910         struct em28xx_fh *fh    = filp->private_data;
1911         struct em28xx    *dev   = fh->dev;
1912         int              rc;
1913
1914         rc = check_dev(dev);
1915         if (rc < 0)
1916                 return rc;
1917
1918         mutex_lock(&dev->lock);
1919         rc = res_get(fh);
1920         mutex_unlock(&dev->lock);
1921
1922         if (unlikely(rc < 0))
1923                 return rc;
1924
1925         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1926
1927         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1928                 (unsigned long)vma->vm_start,
1929                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
1930                 rc);
1931
1932         return rc;
1933 }
1934
1935 static const struct v4l2_file_operations em28xx_v4l_fops = {
1936         .owner         = THIS_MODULE,
1937         .open          = em28xx_v4l2_open,
1938         .release       = em28xx_v4l2_close,
1939         .read          = em28xx_v4l2_read,
1940         .poll          = em28xx_v4l2_poll,
1941         .mmap          = em28xx_v4l2_mmap,
1942         .ioctl         = video_ioctl2,
1943 };
1944
1945 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1946         .vidioc_querycap            = vidioc_querycap,
1947         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1948         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1949         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1950         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1951         .vidioc_g_audio             = vidioc_g_audio,
1952         .vidioc_s_audio             = vidioc_s_audio,
1953         .vidioc_cropcap             = vidioc_cropcap,
1954
1955         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
1956         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
1957         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
1958
1959         .vidioc_reqbufs             = vidioc_reqbufs,
1960         .vidioc_querybuf            = vidioc_querybuf,
1961         .vidioc_qbuf                = vidioc_qbuf,
1962         .vidioc_dqbuf               = vidioc_dqbuf,
1963         .vidioc_s_std               = vidioc_s_std,
1964         .vidioc_g_parm              = vidioc_g_parm,
1965         .vidioc_s_parm              = vidioc_s_parm,
1966         .vidioc_enum_input          = vidioc_enum_input,
1967         .vidioc_g_input             = vidioc_g_input,
1968         .vidioc_s_input             = vidioc_s_input,
1969         .vidioc_queryctrl           = vidioc_queryctrl,
1970         .vidioc_g_ctrl              = vidioc_g_ctrl,
1971         .vidioc_s_ctrl              = vidioc_s_ctrl,
1972         .vidioc_streamon            = vidioc_streamon,
1973         .vidioc_streamoff           = vidioc_streamoff,
1974         .vidioc_g_tuner             = vidioc_g_tuner,
1975         .vidioc_s_tuner             = vidioc_s_tuner,
1976         .vidioc_g_frequency         = vidioc_g_frequency,
1977         .vidioc_s_frequency         = vidioc_s_frequency,
1978 #ifdef CONFIG_VIDEO_ADV_DEBUG
1979         .vidioc_g_register          = vidioc_g_register,
1980         .vidioc_s_register          = vidioc_s_register,
1981         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
1982 #endif
1983 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1984         .vidiocgmbuf                = vidiocgmbuf,
1985 #endif
1986 };
1987
1988 static const struct video_device em28xx_video_template = {
1989         .fops                       = &em28xx_v4l_fops,
1990         .release                    = video_device_release,
1991         .ioctl_ops                  = &video_ioctl_ops,
1992
1993         .minor                      = -1,
1994
1995         .tvnorms                    = V4L2_STD_ALL,
1996         .current_norm               = V4L2_STD_PAL,
1997 };
1998
1999 static const struct v4l2_file_operations radio_fops = {
2000         .owner         = THIS_MODULE,
2001         .open          = em28xx_v4l2_open,
2002         .release       = em28xx_v4l2_close,
2003         .ioctl         = video_ioctl2,
2004 };
2005
2006 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2007         .vidioc_querycap      = radio_querycap,
2008         .vidioc_g_tuner       = radio_g_tuner,
2009         .vidioc_enum_input    = radio_enum_input,
2010         .vidioc_g_audio       = radio_g_audio,
2011         .vidioc_s_tuner       = radio_s_tuner,
2012         .vidioc_s_audio       = radio_s_audio,
2013         .vidioc_s_input       = radio_s_input,
2014         .vidioc_queryctrl     = radio_queryctrl,
2015         .vidioc_g_ctrl        = vidioc_g_ctrl,
2016         .vidioc_s_ctrl        = vidioc_s_ctrl,
2017         .vidioc_g_frequency   = vidioc_g_frequency,
2018         .vidioc_s_frequency   = vidioc_s_frequency,
2019 #ifdef CONFIG_VIDEO_ADV_DEBUG
2020         .vidioc_g_register    = vidioc_g_register,
2021         .vidioc_s_register    = vidioc_s_register,
2022 #endif
2023 };
2024
2025 static struct video_device em28xx_radio_template = {
2026         .name                 = "em28xx-radio",
2027         .fops                 = &radio_fops,
2028         .ioctl_ops            = &radio_ioctl_ops,
2029         .minor                = -1,
2030 };
2031
2032 /******************************** usb interface ******************************/
2033
2034
2035
2036 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2037                                         const struct video_device *template,
2038                                         const char *type_name)
2039 {
2040         struct video_device *vfd;
2041
2042         vfd = video_device_alloc();
2043         if (NULL == vfd)
2044                 return NULL;
2045
2046         *vfd            = *template;
2047         vfd->minor      = -1;
2048         vfd->v4l2_dev   = &dev->v4l2_dev;
2049         vfd->release    = video_device_release;
2050         vfd->debug      = video_debug;
2051
2052         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2053                  dev->name, type_name);
2054
2055         return vfd;
2056 }
2057
2058 int em28xx_register_analog_devices(struct em28xx *dev)
2059 {
2060       u8 val;
2061         int ret;
2062
2063         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2064                 dev->name,
2065                 (EM28XX_VERSION_CODE >> 16) & 0xff,
2066                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2067
2068         /* set default norm */
2069         dev->norm = em28xx_video_template.current_norm;
2070         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2071         dev->ctl_input = 0;
2072
2073         /* Analog specific initialization */
2074         dev->format = &format[0];
2075         em28xx_set_video_format(dev, format[0].fourcc,
2076                                 norm_maxw(dev), norm_maxh(dev));
2077
2078         video_mux(dev, dev->ctl_input);
2079
2080         /* Audio defaults */
2081         dev->mute = 1;
2082         dev->volume = 0x1f;
2083
2084         /* enable vbi capturing */
2085
2086 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2087         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2088         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2089                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
2090         em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51);
2091
2092         em28xx_set_outfmt(dev);
2093         em28xx_colorlevels_set_default(dev);
2094         em28xx_compression_disable(dev);
2095
2096         /* allocate and fill video video_device struct */
2097         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2098         if (!dev->vdev) {
2099                 em28xx_errdev("cannot allocate video_device.\n");
2100                 return -ENODEV;
2101         }
2102
2103         /* register v4l2 video video_device */
2104         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2105                                        video_nr[dev->devno]);
2106         if (ret) {
2107                 em28xx_errdev("unable to register video device (error=%i).\n",
2108                               ret);
2109                 return ret;
2110         }
2111
2112         /* Allocate and fill vbi video_device struct */
2113         dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi");
2114
2115         /* register v4l2 vbi video_device */
2116         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2117                                         vbi_nr[dev->devno]);
2118         if (ret < 0) {
2119                 em28xx_errdev("unable to register vbi device\n");
2120                 return ret;
2121         }
2122
2123         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2124                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2125                                                   "radio");
2126                 if (!dev->radio_dev) {
2127                         em28xx_errdev("cannot allocate video_device.\n");
2128                         return -ENODEV;
2129                 }
2130                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2131                                             radio_nr[dev->devno]);
2132                 if (ret < 0) {
2133                         em28xx_errdev("can't register radio device\n");
2134                         return ret;
2135                 }
2136                 em28xx_info("Registered radio device as /dev/radio%d\n",
2137                             dev->radio_dev->num);
2138         }
2139
2140         em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2141                                 dev->vdev->num, dev->vbi_dev->num);
2142
2143         return 0;
2144 }