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   1 /*
   2    em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
   3                     video capture devices
   4
   5    Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
   6                       Markus Rechberger <mrechberger@gmail.com>
   7                       Mauro Carvalho Chehab <mchehab@infradead.org>
   8                       Sascha Sommer <saschasommer@freenet.de>
   9
  10         Some parts based on SN9C10x PC Camera Controllers GPL driver made
  11                 by Luca Risolia <luca.risolia@studio.unibo.it>
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 2 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27
  28 #include <linux/init.h>
  29 #include <linux/list.h>
  30 #include <linux/module.h>
  31 #include <linux/kernel.h>
  32 #include <linux/bitmap.h>
  33 #include <linux/usb.h>
  34 #include <linux/i2c.h>
  35 #include <linux/version.h>
  36 #include <linux/mm.h>
  37 #include <linux/mutex.h>
  38 #include <linux/slab.h>
  39
  40 #include "em28xx.h"
  41 #include <media/v4l2-common.h>
  42 #include <media/v4l2-ioctl.h>
  43 #include <media/v4l2-chip-ident.h>
  44 #include <media/msp3400.h>
  45 #include <media/tuner.h>
  46
  47 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
  48                       "Markus Rechberger <mrechberger@gmail.com>, " \
  49                       "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
  50                       "Sascha Sommer <saschasommer@freenet.de>"
  51
  52 #define DRIVER_DESC         "Empia em28xx based USB video device driver"
  53 #define EM28XX_VERSION_CODE  KERNEL_VERSION(0, 1, 2)
  54
  55 #define em28xx_videodbg(fmt, arg...) do {\
  56         if (video_debug) \
  57                 printk(KERN_INFO "%s %s :"fmt, \
  58                          dev->name, __func__ , ##arg); } while (0)
  59
  60 static unsigned int isoc_debug;
  61 module_param(isoc_debug, int, 0644);
  62 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  63
  64 #define em28xx_isocdbg(fmt, arg...) \
  65 do {\
  66         if (isoc_debug) { \
  67                 printk(KERN_INFO "%s %s :"fmt, \
  68                          dev->name, __func__ , ##arg); \
  69         } \
  70   } while (0)
  71
  72 MODULE_AUTHOR(DRIVER_AUTHOR);
  73 MODULE_DESCRIPTION(DRIVER_DESC);
  74 MODULE_LICENSE("GPL");
  75
  76 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  77 static unsigned int vbi_nr[]   = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  78 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
  79
  80 module_param_array(video_nr, int, NULL, 0444);
  81 module_param_array(vbi_nr, int, NULL, 0444);
  82 module_param_array(radio_nr, int, NULL, 0444);
  83 MODULE_PARM_DESC(video_nr, "video device numbers");
  84 MODULE_PARM_DESC(vbi_nr,   "vbi device numbers");
  85 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  86
  87 static unsigned int video_debug;
  88 module_param(video_debug, int, 0644);
  89 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  90
  91 /* supported video standards */
  92 static struct em28xx_fmt format[] = {
  93         {
  94                 .name     = "16 bpp YUY2, 4:2:2, packed",
  95                 .fourcc   = V4L2_PIX_FMT_YUYV,
  96                 .depth    = 16,
  97                 .reg      = EM28XX_OUTFMT_YUV422_Y0UY1V,
  98         }, {
  99                 .name     = "16 bpp RGB 565, LE",
 100                 .fourcc   = V4L2_PIX_FMT_RGB565,
 101                 .depth    = 16,
 102                 .reg      = EM28XX_OUTFMT_RGB_16_656,
 103         }, {
 104                 .name     = "8 bpp Bayer BGBG..GRGR",
 105                 .fourcc   = V4L2_PIX_FMT_SBGGR8,
 106                 .depth    = 8,
 107                 .reg      = EM28XX_OUTFMT_RGB_8_BGBG,
 108         }, {
 109                 .name     = "8 bpp Bayer GRGR..BGBG",
 110                 .fourcc   = V4L2_PIX_FMT_SGRBG8,
 111                 .depth    = 8,
 112                 .reg      = EM28XX_OUTFMT_RGB_8_GRGR,
 113         }, {
 114                 .name     = "8 bpp Bayer GBGB..RGRG",
 115                 .fourcc   = V4L2_PIX_FMT_SGBRG8,
 116                 .depth    = 8,
 117                 .reg      = EM28XX_OUTFMT_RGB_8_GBGB,
 118         }, {
 119                 .name     = "12 bpp YUV411",
 120                 .fourcc   = V4L2_PIX_FMT_YUV411P,
 121                 .depth    = 12,
 122                 .reg      = EM28XX_OUTFMT_YUV411,
 123         },
 124 };
 125
 126 /* supported controls */
 127 /* Common to all boards */
 128 static struct v4l2_queryctrl ac97_qctrl[] = {
 129         {
 130                 .id = V4L2_CID_AUDIO_VOLUME,
 131                 .type = V4L2_CTRL_TYPE_INTEGER,
 132                 .name = "Volume",
 133                 .minimum = 0x0,
 134                 .maximum = 0x1f,
 135                 .step = 0x1,
 136                 .default_value = 0x1f,
 137                 .flags = V4L2_CTRL_FLAG_SLIDER,
 138         }, {
 139                 .id = V4L2_CID_AUDIO_MUTE,
 140                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 141                 .name = "Mute",
 142                 .minimum = 0,
 143                 .maximum = 1,
 144                 .step = 1,
 145                 .default_value = 1,
 146                 .flags = 0,
 147         }
 148 };
 149
 150 /* ------------------------------------------------------------------
 151         DMA and thread functions
 152    ------------------------------------------------------------------*/
 153
 154 /*
 155  * Announces that a buffer were filled and request the next
 156  */
 157 static inline void buffer_filled(struct em28xx *dev,
 158                                   struct em28xx_dmaqueue *dma_q,
 159                                   struct em28xx_buffer *buf)
 160 {
 161         /* Advice that buffer was filled */
 162         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 163         buf->vb.state = VIDEOBUF_DONE;
 164         buf->vb.field_count++;
 165         do_gettimeofday(&buf->vb.ts);
 166
 167         dev->isoc_ctl.vid_buf = NULL;
 168
 169         list_del(&buf->vb.queue);
 170         wake_up(&buf->vb.done);
 171 }
 172
 173 static inline void vbi_buffer_filled(struct em28xx *dev,
 174                                      struct em28xx_dmaqueue *dma_q,
 175                                      struct em28xx_buffer *buf)
 176 {
 177         /* Advice that buffer was filled */
 178         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 179
 180         buf->vb.state = VIDEOBUF_DONE;
 181         buf->vb.field_count++;
 182         do_gettimeofday(&buf->vb.ts);
 183
 184         dev->isoc_ctl.vbi_buf = NULL;
 185
 186         list_del(&buf->vb.queue);
 187         wake_up(&buf->vb.done);
 188 }
 189
 190 /*
 191  * Identify the buffer header type and properly handles
 192  */
 193 static void em28xx_copy_video(struct em28xx *dev,
 194                               struct em28xx_dmaqueue  *dma_q,
 195                               struct em28xx_buffer *buf,
 196                               unsigned char *p,
 197                               unsigned char *outp, unsigned long len)
 198 {
 199         void *fieldstart, *startwrite, *startread;
 200         int  linesdone, currlinedone, offset, lencopy, remain;
 201         int bytesperline = dev->width << 1;
 202
 203         if (dma_q->pos + len > buf->vb.size)
 204                 len = buf->vb.size - dma_q->pos;
 205
 206         if (p[0] != 0x88 && p[0] != 0x22) {
 207                 em28xx_isocdbg("frame is not complete\n");
 208                 len += 4;
 209         } else
 210                 p += 4;
 211
 212         startread = p;
 213         remain = len;
 214
 215         if (dev->progressive)
 216                 fieldstart = outp;
 217         else {
 218                 /* Interlaces two half frames */
 219                 if (buf->top_field)
 220                         fieldstart = outp;
 221                 else
 222                         fieldstart = outp + bytesperline;
 223         }
 224
 225         linesdone = dma_q->pos / bytesperline;
 226         currlinedone = dma_q->pos % bytesperline;
 227
 228         if (dev->progressive)
 229                 offset = linesdone * bytesperline + currlinedone;
 230         else
 231                 offset = linesdone * bytesperline * 2 + currlinedone;
 232
 233         startwrite = fieldstart + offset;
 234         lencopy = bytesperline - currlinedone;
 235         lencopy = lencopy > remain ? remain : lencopy;
 236
 237         if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
 238                 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 239                                ((char *)startwrite + lencopy) -
 240                                ((char *)outp + buf->vb.size));
 241                 remain = (char *)outp + buf->vb.size - (char *)startwrite;
 242                 lencopy = remain;
 243         }
 244         if (lencopy <= 0)
 245                 return;
 246         memcpy(startwrite, startread, lencopy);
 247
 248         remain -= lencopy;
 249
 250         while (remain > 0) {
 251                 startwrite += lencopy + bytesperline;
 252                 startread += lencopy;
 253                 if (bytesperline > remain)
 254                         lencopy = remain;
 255                 else
 256                         lencopy = bytesperline;
 257
 258                 if ((char *)startwrite + lencopy > (char *)outp +
 259                     buf->vb.size) {
 260                         em28xx_isocdbg("Overflow of %zi bytes past buffer end"
 261                                        "(2)\n",
 262                                        ((char *)startwrite + lencopy) -
 263                                        ((char *)outp + buf->vb.size));
 264                         lencopy = remain = (char *)outp + buf->vb.size -
 265                                            (char *)startwrite;
 266                 }
 267                 if (lencopy <= 0)
 268                         break;
 269
 270                 memcpy(startwrite, startread, lencopy);
 271
 272                 remain -= lencopy;
 273         }
 274
 275         dma_q->pos += len;
 276 }
 277
 278 static void em28xx_copy_vbi(struct em28xx *dev,
 279                               struct em28xx_dmaqueue  *dma_q,
 280                               struct em28xx_buffer *buf,
 281                               unsigned char *p,
 282                               unsigned char *outp, unsigned long len)
 283 {
 284         void *startwrite, *startread;
 285         int  offset;
 286         int bytesperline = dev->vbi_width;
 287
 288         if (dev == NULL) {
 289                 em28xx_isocdbg("dev is null\n");
 290                 return;
 291         }
 292
 293         if (dma_q == NULL) {
 294                 em28xx_isocdbg("dma_q is null\n");
 295                 return;
 296         }
 297         if (buf == NULL) {
 298                 return;
 299         }
 300         if (p == NULL) {
 301                 em28xx_isocdbg("p is null\n");
 302                 return;
 303         }
 304         if (outp == NULL) {
 305                 em28xx_isocdbg("outp is null\n");
 306                 return;
 307         }
 308
 309         if (dma_q->pos + len > buf->vb.size)
 310                 len = buf->vb.size - dma_q->pos;
 311
 312         if ((p[0] == 0x33 && p[1] == 0x95) ||
 313             (p[0] == 0x88 && p[1] == 0x88)) {
 314                 /* Header field, advance past it */
 315                 p += 4;
 316         } else {
 317                 len += 4;
 318         }
 319
 320         startread = p;
 321
 322         startwrite = outp + dma_q->pos;
 323         offset = dma_q->pos;
 324
 325         /* Make sure the bottom field populates the second half of the frame */
 326         if (buf->top_field == 0) {
 327                 startwrite += bytesperline * dev->vbi_height;
 328                 offset += bytesperline * dev->vbi_height;
 329         }
 330
 331         memcpy(startwrite, startread, len);
 332         dma_q->pos += len;
 333 }
 334
 335 static inline void print_err_status(struct em28xx *dev,
 336                                      int packet, int status)
 337 {
 338         char *errmsg = "Unknown";
 339
 340         switch (status) {
 341         case -ENOENT:
 342                 errmsg = "unlinked synchronuously";
 343                 break;
 344         case -ECONNRESET:
 345                 errmsg = "unlinked asynchronuously";
 346                 break;
 347         case -ENOSR:
 348                 errmsg = "Buffer error (overrun)";
 349                 break;
 350         case -EPIPE:
 351                 errmsg = "Stalled (device not responding)";
 352                 break;
 353         case -EOVERFLOW:
 354                 errmsg = "Babble (bad cable?)";
 355                 break;
 356         case -EPROTO:
 357                 errmsg = "Bit-stuff error (bad cable?)";
 358                 break;
 359         case -EILSEQ:
 360                 errmsg = "CRC/Timeout (could be anything)";
 361                 break;
 362         case -ETIME:
 363                 errmsg = "Device does not respond";
 364                 break;
 365         }
 366         if (packet < 0) {
 367                 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 368         } else {
 369                 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
 370                                packet, status, errmsg);
 371         }
 372 }
 373
 374 /*
 375  * video-buf generic routine to get the next available buffer
 376  */
 377 static inline void get_next_buf(struct em28xx_dmaqueue *dma_q,
 378                                           struct em28xx_buffer **buf)
 379 {
 380         struct em28xx *dev = container_of(dma_q, struct em28xx, vidq);
 381         char *outp;
 382
 383         if (list_empty(&dma_q->active)) {
 384                 em28xx_isocdbg("No active queue to serve\n");
 385                 dev->isoc_ctl.vid_buf = NULL;
 386                 *buf = NULL;
 387                 return;
 388         }
 389
 390         /* Get the next buffer */
 391         *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
 392
 393         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 394         outp = videobuf_to_vmalloc(&(*buf)->vb);
 395         memset(outp, 0, (*buf)->vb.size);
 396
 397         dev->isoc_ctl.vid_buf = *buf;
 398
 399         return;
 400 }
 401
 402 /*
 403  * video-buf generic routine to get the next available VBI buffer
 404  */
 405 static inline void vbi_get_next_buf(struct em28xx_dmaqueue *dma_q,
 406                                     struct em28xx_buffer **buf)
 407 {
 408         struct em28xx *dev = container_of(dma_q, struct em28xx, vbiq);
 409         char *outp;
 410
 411         if (list_empty(&dma_q->active)) {
 412                 em28xx_isocdbg("No active queue to serve\n");
 413                 dev->isoc_ctl.vbi_buf = NULL;
 414                 *buf = NULL;
 415                 return;
 416         }
 417
 418         /* Get the next buffer */
 419         *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
 420         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 421         outp = videobuf_to_vmalloc(&(*buf)->vb);
 422         memset(outp, 0x00, (*buf)->vb.size);
 423
 424         dev->isoc_ctl.vbi_buf = *buf;
 425
 426         return;
 427 }
 428
 429 /*
 430  * Controls the isoc copy of each urb packet
 431  */
 432 static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb)
 433 {
 434         struct em28xx_buffer    *buf;
 435         struct em28xx_dmaqueue  *dma_q = &dev->vidq;
 436         unsigned char *outp = NULL;
 437         int i, len = 0, rc = 1;
 438         unsigned char *p;
 439
 440         if (!dev)
 441                 return 0;
 442
 443         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 444                 return 0;
 445
 446         if (urb->status < 0) {
 447                 print_err_status(dev, -1, urb->status);
 448                 if (urb->status == -ENOENT)
 449                         return 0;
 450         }
 451
 452         buf = dev->isoc_ctl.vid_buf;
 453         if (buf != NULL)
 454                 outp = videobuf_to_vmalloc(&buf->vb);
 455
 456         for (i = 0; i < urb->number_of_packets; i++) {
 457                 int status = urb->iso_frame_desc[i].status;
 458
 459                 if (status < 0) {
 460                         print_err_status(dev, i, status);
 461                         if (urb->iso_frame_desc[i].status != -EPROTO)
 462                                 continue;
 463                 }
 464
 465                 len = urb->iso_frame_desc[i].actual_length - 4;
 466
 467                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 468                         /* em28xx_isocdbg("packet %d is empty",i); - spammy */
 469                         continue;
 470                 }
 471                 if (urb->iso_frame_desc[i].actual_length >
 472                                                 dev->max_pkt_size) {
 473                         em28xx_isocdbg("packet bigger than packet size");
 474                         continue;
 475                 }
 476
 477                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 478
 479                 /* FIXME: incomplete buffer checks where removed to make
 480                    logic simpler. Impacts of those changes should be evaluated
 481                  */
 482                 if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) {
 483                         em28xx_isocdbg("VBI HEADER!!!\n");
 484                         /* FIXME: Should add vbi copy */
 485                         continue;
 486                 }
 487                 if (p[0] == 0x22 && p[1] == 0x5a) {
 488                         em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
 489                                        len, (p[2] & 1) ? "odd" : "even");
 490
 491                         if (dev->progressive || !(p[2] & 1)) {
 492                                 if (buf != NULL)
 493                                         buffer_filled(dev, dma_q, buf);
 494                                 get_next_buf(dma_q, &buf);
 495                                 if (buf == NULL)
 496                                         outp = NULL;
 497                                 else
 498                                         outp = videobuf_to_vmalloc(&buf->vb);
 499                         }
 500
 501                         if (buf != NULL) {
 502                                 if (p[2] & 1)
 503                                         buf->top_field = 0;
 504                                 else
 505                                         buf->top_field = 1;
 506                         }
 507
 508                         dma_q->pos = 0;
 509                 }
 510                 if (buf != NULL)
 511                         em28xx_copy_video(dev, dma_q, buf, p, outp, len);
 512         }
 513         return rc;
 514 }
 515
 516 /* Version of isoc handler that takes into account a mixture of video and
 517    VBI data */
 518 static inline int em28xx_isoc_copy_vbi(struct em28xx *dev, struct urb *urb)
 519 {
 520         struct em28xx_buffer    *buf, *vbi_buf;
 521         struct em28xx_dmaqueue  *dma_q = &dev->vidq;
 522         struct em28xx_dmaqueue  *vbi_dma_q = &dev->vbiq;
 523         unsigned char *outp = NULL;
 524         unsigned char *vbioutp = NULL;
 525         int i, len = 0, rc = 1;
 526         unsigned char *p;
 527         int vbi_size;
 528
 529         if (!dev)
 530                 return 0;
 531
 532         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 533                 return 0;
 534
 535         if (urb->status < 0) {
 536                 print_err_status(dev, -1, urb->status);
 537                 if (urb->status == -ENOENT)
 538                         return 0;
 539         }
 540
 541         buf = dev->isoc_ctl.vid_buf;
 542         if (buf != NULL)
 543                 outp = videobuf_to_vmalloc(&buf->vb);
 544
 545         vbi_buf = dev->isoc_ctl.vbi_buf;
 546         if (vbi_buf != NULL)
 547                 vbioutp = videobuf_to_vmalloc(&vbi_buf->vb);
 548
 549         for (i = 0; i < urb->number_of_packets; i++) {
 550                 int status = urb->iso_frame_desc[i].status;
 551
 552                 if (status < 0) {
 553                         print_err_status(dev, i, status);
 554                         if (urb->iso_frame_desc[i].status != -EPROTO)
 555                                 continue;
 556                 }
 557
 558                 len = urb->iso_frame_desc[i].actual_length - 4;
 559
 560                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 561                         /* em28xx_isocdbg("packet %d is empty",i); - spammy */
 562                         continue;
 563                 }
 564                 if (urb->iso_frame_desc[i].actual_length >
 565                                                 dev->max_pkt_size) {
 566                         em28xx_isocdbg("packet bigger than packet size");
 567                         continue;
 568                 }
 569
 570                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 571
 572                 /* capture type 0 = vbi start
 573                    capture type 1 = video start
 574                    capture type 2 = video in progress */
 575                 if (p[0] == 0x33 && p[1] == 0x95) {
 576                         dev->capture_type = 0;
 577                         dev->vbi_read = 0;
 578                         em28xx_isocdbg("VBI START HEADER!!!\n");
 579                         dev->cur_field = p[2];
 580                 }
 581
 582                 vbi_size = dev->vbi_width * dev->vbi_height;
 583
 584                 if (dev->capture_type == 0) {
 585                         if (dev->vbi_read >= vbi_size) {
 586                                 /* We've already read all the VBI data, so
 587                                    treat the rest as video */
 588                                 em28xx_isocdbg("dev->vbi_read > vbi_size\n");
 589                         } else if ((dev->vbi_read + len) < vbi_size) {
 590                                 /* This entire frame is VBI data */
 591                                 if (dev->vbi_read == 0 &&
 592                                     (!(dev->cur_field & 1))) {
 593                                         /* Brand new frame */
 594                                         if (vbi_buf != NULL)
 595                                                 vbi_buffer_filled(dev,
 596                                                                   vbi_dma_q,
 597                                                                   vbi_buf);
 598                                         vbi_get_next_buf(vbi_dma_q, &vbi_buf);
 599                                         if (vbi_buf == NULL)
 600                                                 vbioutp = NULL;
 601                                         else
 602                                                 vbioutp = videobuf_to_vmalloc(
 603                                                         &vbi_buf->vb);
 604                                 }
 605
 606                                 if (dev->vbi_read == 0) {
 607                                         vbi_dma_q->pos = 0;
 608                                         if (vbi_buf != NULL) {
 609                                                 if (dev->cur_field & 1)
 610                                                         vbi_buf->top_field = 0;
 611                                                 else
 612                                                         vbi_buf->top_field = 1;
 613                                         }
 614                                 }
 615
 616                                 dev->vbi_read += len;
 617                                 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
 618                                                 vbioutp, len);
 619                         } else {
 620                                 /* Some of this frame is VBI data and some is
 621                                    video data */
 622                                 int vbi_data_len = vbi_size - dev->vbi_read;
 623                                 dev->vbi_read += vbi_data_len;
 624                                 em28xx_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
 625                                                 vbioutp, vbi_data_len);
 626                                 dev->capture_type = 1;
 627                                 p += vbi_data_len;
 628                                 len -= vbi_data_len;
 629                         }
 630                 }
 631
 632                 if (dev->capture_type == 1) {
 633                         dev->capture_type = 2;
 634                         em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2],
 635                                        len, (p[2] & 1) ? "odd" : "even");
 636
 637                         if (dev->progressive || !(dev->cur_field & 1)) {
 638                                 if (buf != NULL)
 639                                         buffer_filled(dev, dma_q, buf);
 640                                 get_next_buf(dma_q, &buf);
 641                                 if (buf == NULL)
 642                                         outp = NULL;
 643                                 else
 644                                         outp = videobuf_to_vmalloc(&buf->vb);
 645                         }
 646                         if (buf != NULL) {
 647                                 if (dev->cur_field & 1)
 648                                         buf->top_field = 0;
 649                                 else
 650                                         buf->top_field = 1;
 651                         }
 652
 653                         dma_q->pos = 0;
 654                 }
 655                 if (buf != NULL && dev->capture_type == 2)
 656                         em28xx_copy_video(dev, dma_q, buf, p, outp, len);
 657         }
 658         return rc;
 659 }
 660
 661
 662 /* ------------------------------------------------------------------
 663         Videobuf operations
 664    ------------------------------------------------------------------*/
 665
 666 static int
 667 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 668 {
 669         struct em28xx_fh *fh = vq->priv_data;
 670         struct em28xx        *dev = fh->dev;
 671         struct v4l2_frequency f;
 672
 673         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)
 674                 >> 3;
 675
 676         if (0 == *count)
 677                 *count = EM28XX_DEF_BUF;
 678
 679         if (*count < EM28XX_MIN_BUF)
 680                 *count = EM28XX_MIN_BUF;
 681
 682         /* Ask tuner to go to analog or radio mode */
 683         memset(&f, 0, sizeof(f));
 684         f.frequency = dev->ctl_freq;
 685         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 686
 687         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
 688
 689         return 0;
 690 }
 691
 692 /* This is called *without* dev->slock held; please keep it that way */
 693 static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
 694 {
 695         struct em28xx_fh     *fh  = vq->priv_data;
 696         struct em28xx        *dev = fh->dev;
 697         unsigned long flags = 0;
 698         if (in_interrupt())
 699                 BUG();
 700
 701         /* We used to wait for the buffer to finish here, but this didn't work
 702            because, as we were keeping the state as VIDEOBUF_QUEUED,
 703            videobuf_queue_cancel marked it as finished for us.
 704            (Also, it could wedge forever if the hardware was misconfigured.)
 705
 706            This should be safe; by the time we get here, the buffer isn't
 707            queued anymore. If we ever start marking the buffers as
 708            VIDEOBUF_ACTIVE, it won't be, though.
 709         */
 710         spin_lock_irqsave(&dev->slock, flags);
 711         if (dev->isoc_ctl.vid_buf == buf)
 712                 dev->isoc_ctl.vid_buf = NULL;
 713         spin_unlock_irqrestore(&dev->slock, flags);
 714
 715         videobuf_vmalloc_free(&buf->vb);
 716         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 717 }
 718
 719 static int
 720 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 721                                                 enum v4l2_field field)
 722 {
 723         struct em28xx_fh     *fh  = vq->priv_data;
 724         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 725         struct em28xx        *dev = fh->dev;
 726         int                  rc = 0, urb_init = 0;
 727
 728         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 729                         + 7) >> 3;
 730
 731         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 732                 return -EINVAL;
 733
 734         buf->vb.width  = dev->width;
 735         buf->vb.height = dev->height;
 736         buf->vb.field  = field;
 737
 738         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 739                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 740                 if (rc < 0)
 741                         goto fail;
 742         }
 743
 744         if (!dev->isoc_ctl.num_bufs)
 745                 urb_init = 1;
 746
 747         if (urb_init) {
 748                 if (em28xx_vbi_supported(dev) == 1)
 749                         rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
 750                                               EM28XX_NUM_BUFS,
 751                                               dev->max_pkt_size,
 752                                               em28xx_isoc_copy_vbi);
 753                 else
 754                         rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
 755                                               EM28XX_NUM_BUFS,
 756                                               dev->max_pkt_size,
 757                                               em28xx_isoc_copy);
 758                 if (rc < 0)
 759                         goto fail;
 760         }
 761
 762         buf->vb.state = VIDEOBUF_PREPARED;
 763         return 0;
 764
 765 fail:
 766         free_buffer(vq, buf);
 767         return rc;
 768 }
 769
 770 static void
 771 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 772 {
 773         struct em28xx_buffer    *buf     = container_of(vb,
 774                                                         struct em28xx_buffer,
 775                                                         vb);
 776         struct em28xx_fh        *fh      = vq->priv_data;
 777         struct em28xx           *dev     = fh->dev;
 778         struct em28xx_dmaqueue  *vidq    = &dev->vidq;
 779
 780         buf->vb.state = VIDEOBUF_QUEUED;
 781         list_add_tail(&buf->vb.queue, &vidq->active);
 782
 783 }
 784
 785 static void buffer_release(struct videobuf_queue *vq,
 786                                 struct videobuf_buffer *vb)
 787 {
 788         struct em28xx_buffer   *buf  = container_of(vb,
 789                                                     struct em28xx_buffer,
 790                                                     vb);
 791         struct em28xx_fh       *fh   = vq->priv_data;
 792         struct em28xx          *dev  = (struct em28xx *)fh->dev;
 793
 794         em28xx_isocdbg("em28xx: called buffer_release\n");
 795
 796         free_buffer(vq, buf);
 797 }
 798
 799 static struct videobuf_queue_ops em28xx_video_qops = {
 800         .buf_setup      = buffer_setup,
 801         .buf_prepare    = buffer_prepare,
 802         .buf_queue      = buffer_queue,
 803         .buf_release    = buffer_release,
 804 };
 805
 806 /*********************  v4l2 interface  **************************************/
 807
 808 static void video_mux(struct em28xx *dev, int index)
 809 {
 810         dev->ctl_input = index;
 811         dev->ctl_ainput = INPUT(index)->amux;
 812         dev->ctl_aoutput = INPUT(index)->aout;
 813
 814         if (!dev->ctl_aoutput)
 815                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 816
 817         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
 818                         INPUT(index)->vmux, 0, 0);
 819
 820         if (dev->board.has_msp34xx) {
 821                 if (dev->i2s_speed) {
 822                         v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
 823                                 s_i2s_clock_freq, dev->i2s_speed);
 824                 }
 825                 /* Note: this is msp3400 specific */
 826                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 827                          dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
 828         }
 829
 830         if (dev->board.adecoder != EM28XX_NOADECODER) {
 831                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 832                         dev->ctl_ainput, dev->ctl_aoutput, 0);
 833         }
 834
 835         em28xx_audio_analog_set(dev);
 836 }
 837
 838 /* Usage lock check functions */
 839 static int res_get(struct em28xx_fh *fh, unsigned int bit)
 840 {
 841         struct em28xx    *dev = fh->dev;
 842
 843         if (fh->resources & bit)
 844                 /* have it already allocated */
 845                 return 1;
 846
 847         /* is it free? */
 848         mutex_lock(&dev->lock);
 849         if (dev->resources & bit) {
 850                 /* no, someone else uses it */
 851                 mutex_unlock(&dev->lock);
 852                 return 0;
 853         }
 854         /* it's free, grab it */
 855         fh->resources  |= bit;
 856         dev->resources |= bit;
 857         em28xx_videodbg("res: get %d\n", bit);
 858         mutex_unlock(&dev->lock);
 859         return 1;
 860 }
 861
 862 static int res_check(struct em28xx_fh *fh, unsigned int bit)
 863 {
 864         return fh->resources & bit;
 865 }
 866
 867 static int res_locked(struct em28xx *dev, unsigned int bit)
 868 {
 869         return dev->resources & bit;
 870 }
 871
 872 static void res_free(struct em28xx_fh *fh, unsigned int bits)
 873 {
 874         struct em28xx    *dev = fh->dev;
 875
 876         BUG_ON((fh->resources & bits) != bits);
 877
 878         mutex_lock(&dev->lock);
 879         fh->resources  &= ~bits;
 880         dev->resources &= ~bits;
 881         em28xx_videodbg("res: put %d\n", bits);
 882         mutex_unlock(&dev->lock);
 883 }
 884
 885 static int get_ressource(struct em28xx_fh *fh)
 886 {
 887         switch (fh->type) {
 888         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 889                 return EM28XX_RESOURCE_VIDEO;
 890         case V4L2_BUF_TYPE_VBI_CAPTURE:
 891                 return EM28XX_RESOURCE_VBI;
 892         default:
 893                 BUG();
 894                 return 0;
 895         }
 896 }
 897
 898 /*
 899  * ac97_queryctrl()
 900  * return the ac97 supported controls
 901  */
 902 static int ac97_queryctrl(struct v4l2_queryctrl *qc)
 903 {
 904         int i;
 905
 906         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
 907                 if (qc->id && qc->id == ac97_qctrl[i].id) {
 908                         memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
 909                         return 0;
 910                 }
 911         }
 912
 913         /* Control is not ac97 related */
 914         return 1;
 915 }
 916
 917 /*
 918  * ac97_get_ctrl()
 919  * return the current values for ac97 mute and volume
 920  */
 921 static int ac97_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
 922 {
 923         switch (ctrl->id) {
 924         case V4L2_CID_AUDIO_MUTE:
 925                 ctrl->value = dev->mute;
 926                 return 0;
 927         case V4L2_CID_AUDIO_VOLUME:
 928                 ctrl->value = dev->volume;
 929                 return 0;
 930         default:
 931                 /* Control is not ac97 related */
 932                 return 1;
 933         }
 934 }
 935
 936 /*
 937  * ac97_set_ctrl()
 938  * set values for ac97 mute and volume
 939  */
 940 static int ac97_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
 941 {
 942         int i;
 943
 944         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++)
 945                 if (ctrl->id == ac97_qctrl[i].id)
 946                         goto handle;
 947
 948         /* Announce that hasn't handle it */
 949         return 1;
 950
 951 handle:
 952         if (ctrl->value < ac97_qctrl[i].minimum ||
 953             ctrl->value > ac97_qctrl[i].maximum)
 954                 return -ERANGE;
 955
 956         switch (ctrl->id) {
 957         case V4L2_CID_AUDIO_MUTE:
 958                 dev->mute = ctrl->value;
 959                 break;
 960         case V4L2_CID_AUDIO_VOLUME:
 961                 dev->volume = ctrl->value;
 962                 break;
 963         }
 964
 965         return em28xx_audio_analog_set(dev);
 966 }
 967
 968 static int check_dev(struct em28xx *dev)
 969 {
 970         if (dev->state & DEV_DISCONNECTED) {
 971                 em28xx_errdev("v4l2 ioctl: device not present\n");
 972                 return -ENODEV;
 973         }
 974
 975         if (dev->state & DEV_MISCONFIGURED) {
 976                 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
 977                               "close and open it again\n");
 978                 return -EIO;
 979         }
 980         return 0;
 981 }
 982
 983 static void get_scale(struct em28xx *dev,
 984                         unsigned int width, unsigned int height,
 985                         unsigned int *hscale, unsigned int *vscale)
 986 {
 987         unsigned int          maxw = norm_maxw(dev);
 988         unsigned int          maxh = norm_maxh(dev);
 989
 990         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 991         if (*hscale >= 0x4000)
 992                 *hscale = 0x3fff;
 993
 994         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 995         if (*vscale >= 0x4000)
 996                 *vscale = 0x3fff;
 997 }
 998
 999 /* ------------------------------------------------------------------
1000         IOCTL vidioc handling
1001    ------------------------------------------------------------------*/
1002
1003 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1004                                         struct v4l2_format *f)
1005 {
1006         struct em28xx_fh      *fh  = priv;
1007         struct em28xx         *dev = fh->dev;
1008
1009         mutex_lock(&dev->lock);
1010
1011         f->fmt.pix.width = dev->width;
1012         f->fmt.pix.height = dev->height;
1013         f->fmt.pix.pixelformat = dev->format->fourcc;
1014         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
1015         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
1016         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1017
1018         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
1019         if (dev->progressive)
1020                 f->fmt.pix.field = V4L2_FIELD_NONE;
1021         else
1022                 f->fmt.pix.field = dev->interlaced ?
1023                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1024
1025         mutex_unlock(&dev->lock);
1026         return 0;
1027 }
1028
1029 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
1030 {
1031         unsigned int i;
1032
1033         for (i = 0; i < ARRAY_SIZE(format); i++)
1034                 if (format[i].fourcc == fourcc)
1035                         return &format[i];
1036
1037         return NULL;
1038 }
1039
1040 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1041                         struct v4l2_format *f)
1042 {
1043         struct em28xx_fh      *fh    = priv;
1044         struct em28xx         *dev   = fh->dev;
1045         unsigned int          width  = f->fmt.pix.width;
1046         unsigned int          height = f->fmt.pix.height;
1047         unsigned int          maxw   = norm_maxw(dev);
1048         unsigned int          maxh   = norm_maxh(dev);
1049         unsigned int          hscale, vscale;
1050         struct em28xx_fmt     *fmt;
1051
1052         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1053         if (!fmt) {
1054                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1055                                 f->fmt.pix.pixelformat);
1056                 return -EINVAL;
1057         }
1058
1059         if (dev->board.is_em2800) {
1060                 /* the em2800 can only scale down to 50% */
1061                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
1062                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
1063         } else {
1064                 /* width must even because of the YUYV format
1065                    height must be even because of interlacing */
1066                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
1067                                       1, 0);
1068         }
1069
1070         get_scale(dev, width, height, &hscale, &vscale);
1071
1072         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
1073         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
1074
1075         f->fmt.pix.width = width;
1076         f->fmt.pix.height = height;
1077         f->fmt.pix.pixelformat = fmt->fourcc;
1078         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1079         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1080         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1081         if (dev->progressive)
1082                 f->fmt.pix.field = V4L2_FIELD_NONE;
1083         else
1084                 f->fmt.pix.field = dev->interlaced ?
1085                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1086
1087         return 0;
1088 }
1089
1090 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1091                                    unsigned width, unsigned height)
1092 {
1093         struct em28xx_fmt     *fmt;
1094
1095         fmt = format_by_fourcc(fourcc);
1096         if (!fmt)
1097                 return -EINVAL;
1098
1099         dev->format = fmt;
1100         dev->width  = width;
1101         dev->height = height;
1102
1103         /* set new image size */
1104         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1105
1106         em28xx_set_alternate(dev);
1107         em28xx_resolution_set(dev);
1108
1109         return 0;
1110 }
1111
1112 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1113                         struct v4l2_format *f)
1114 {
1115         struct em28xx_fh      *fh  = priv;
1116         struct em28xx         *dev = fh->dev;
1117         int                   rc;
1118
1119         rc = check_dev(dev);
1120         if (rc < 0)
1121                 return rc;
1122
1123         mutex_lock(&dev->lock);
1124
1125         vidioc_try_fmt_vid_cap(file, priv, f);
1126
1127         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1128                 em28xx_errdev("%s queue busy\n", __func__);
1129                 rc = -EBUSY;
1130                 goto out;
1131         }
1132
1133         rc = em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1134                                 f->fmt.pix.width, f->fmt.pix.height);
1135
1136 out:
1137         mutex_unlock(&dev->lock);
1138         return rc;
1139 }
1140
1141 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1142 {
1143         struct em28xx_fh   *fh  = priv;
1144         struct em28xx      *dev = fh->dev;
1145         int                rc;
1146
1147         rc = check_dev(dev);
1148         if (rc < 0)
1149                 return rc;
1150
1151         *norm = dev->norm;
1152
1153         return 0;
1154 }
1155
1156 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1157 {
1158         struct em28xx_fh   *fh  = priv;
1159         struct em28xx      *dev = fh->dev;
1160         struct v4l2_format f;
1161         int                rc;
1162
1163         rc = check_dev(dev);
1164         if (rc < 0)
1165                 return rc;
1166
1167         mutex_lock(&dev->lock);
1168         dev->norm = *norm;
1169
1170         /* Adjusts width/height, if needed */
1171         f.fmt.pix.width = dev->width;
1172         f.fmt.pix.height = dev->height;
1173         vidioc_try_fmt_vid_cap(file, priv, &f);
1174
1175         /* set new image size */
1176         dev->width = f.fmt.pix.width;
1177         dev->height = f.fmt.pix.height;
1178         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1179
1180         em28xx_resolution_set(dev);
1181         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1182
1183         mutex_unlock(&dev->lock);
1184         return 0;
1185 }
1186
1187 static int vidioc_g_parm(struct file *file, void *priv,
1188                          struct v4l2_streamparm *p)
1189 {
1190         struct em28xx_fh   *fh  = priv;
1191         struct em28xx      *dev = fh->dev;
1192         int rc = 0;
1193
1194         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1195                 return -EINVAL;
1196
1197         if (dev->board.is_webcam)
1198                 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1199                                                 video, g_parm, p);
1200         else
1201                 v4l2_video_std_frame_period(dev->norm,
1202                                                  &p->parm.capture.timeperframe);
1203
1204         return rc;
1205 }
1206
1207 static int vidioc_s_parm(struct file *file, void *priv,
1208                          struct v4l2_streamparm *p)
1209 {
1210         struct em28xx_fh   *fh  = priv;
1211         struct em28xx      *dev = fh->dev;
1212
1213         if (!dev->board.is_webcam)
1214                 return -EINVAL;
1215
1216         if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1217                 return -EINVAL;
1218
1219         return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1220 }
1221
1222 static const char *iname[] = {
1223         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1224         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1225         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1226         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1227         [EM28XX_VMUX_SVIDEO]     = "S-Video",
1228         [EM28XX_VMUX_TELEVISION] = "Television",
1229         [EM28XX_VMUX_CABLE]      = "Cable TV",
1230         [EM28XX_VMUX_DVB]        = "DVB",
1231         [EM28XX_VMUX_DEBUG]      = "for debug only",
1232 };
1233
1234 static int vidioc_enum_input(struct file *file, void *priv,
1235                                 struct v4l2_input *i)
1236 {
1237         struct em28xx_fh   *fh  = priv;
1238         struct em28xx      *dev = fh->dev;
1239         unsigned int       n;
1240
1241         n = i->index;
1242         if (n >= MAX_EM28XX_INPUT)
1243                 return -EINVAL;
1244         if (0 == INPUT(n)->type)
1245                 return -EINVAL;
1246
1247         i->index = n;
1248         i->type = V4L2_INPUT_TYPE_CAMERA;
1249
1250         strcpy(i->name, iname[INPUT(n)->type]);
1251
1252         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1253                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1254                 i->type = V4L2_INPUT_TYPE_TUNER;
1255
1256         i->std = dev->vdev->tvnorms;
1257
1258         return 0;
1259 }
1260
1261 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1262 {
1263         struct em28xx_fh   *fh  = priv;
1264         struct em28xx      *dev = fh->dev;
1265
1266         *i = dev->ctl_input;
1267
1268         return 0;
1269 }
1270
1271 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1272 {
1273         struct em28xx_fh   *fh  = priv;
1274         struct em28xx      *dev = fh->dev;
1275         int                rc;
1276
1277         rc = check_dev(dev);
1278         if (rc < 0)
1279                 return rc;
1280
1281         if (i >= MAX_EM28XX_INPUT)
1282                 return -EINVAL;
1283         if (0 == INPUT(i)->type)
1284                 return -EINVAL;
1285
1286         dev->ctl_input = i;
1287
1288         mutex_lock(&dev->lock);
1289         video_mux(dev, dev->ctl_input);
1290         mutex_unlock(&dev->lock);
1291         return 0;
1292 }
1293
1294 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1295 {
1296         struct em28xx_fh   *fh    = priv;
1297         struct em28xx      *dev   = fh->dev;
1298
1299         if (!dev->audio_mode.has_audio)
1300                 return -EINVAL;
1301
1302         switch (a->index) {
1303         case EM28XX_AMUX_VIDEO:
1304                 strcpy(a->name, "Television");
1305                 break;
1306         case EM28XX_AMUX_LINE_IN:
1307                 strcpy(a->name, "Line In");
1308                 break;
1309         case EM28XX_AMUX_VIDEO2:
1310                 strcpy(a->name, "Television alt");
1311                 break;
1312         case EM28XX_AMUX_PHONE:
1313                 strcpy(a->name, "Phone");
1314                 break;
1315         case EM28XX_AMUX_MIC:
1316                 strcpy(a->name, "Mic");
1317                 break;
1318         case EM28XX_AMUX_CD:
1319                 strcpy(a->name, "CD");
1320                 break;
1321         case EM28XX_AMUX_AUX:
1322                 strcpy(a->name, "Aux");
1323                 break;
1324         case EM28XX_AMUX_PCM_OUT:
1325                 strcpy(a->name, "PCM");
1326                 break;
1327         default:
1328                 return -EINVAL;
1329         }
1330
1331         a->index = dev->ctl_ainput;
1332         a->capability = V4L2_AUDCAP_STEREO;
1333
1334         return 0;
1335 }
1336
1337 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1338 {
1339         struct em28xx_fh   *fh  = priv;
1340         struct em28xx      *dev = fh->dev;
1341
1342
1343         if (!dev->audio_mode.has_audio)
1344                 return -EINVAL;
1345
1346         if (a->index >= MAX_EM28XX_INPUT)
1347                 return -EINVAL;
1348         if (0 == INPUT(a->index)->type)
1349                 return -EINVAL;
1350
1351         mutex_lock(&dev->lock);
1352
1353         dev->ctl_ainput = INPUT(a->index)->amux;
1354         dev->ctl_aoutput = INPUT(a->index)->aout;
1355
1356         if (!dev->ctl_aoutput)
1357                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1358
1359         mutex_unlock(&dev->lock);
1360         return 0;
1361 }
1362
1363 static int vidioc_queryctrl(struct file *file, void *priv,
1364                                 struct v4l2_queryctrl *qc)
1365 {
1366         struct em28xx_fh      *fh  = priv;
1367         struct em28xx         *dev = fh->dev;
1368         int                   id  = qc->id;
1369         int                   rc;
1370
1371         rc = check_dev(dev);
1372         if (rc < 0)
1373                 return rc;
1374
1375         memset(qc, 0, sizeof(*qc));
1376
1377         qc->id = id;
1378
1379         /* enumberate AC97 controls */
1380         if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
1381                 rc = ac97_queryctrl(qc);
1382                 if (!rc)
1383                         return 0;
1384         }
1385
1386         /* enumberate V4L2 device controls */
1387         mutex_lock(&dev->lock);
1388         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1389         mutex_unlock(&dev->lock);
1390
1391         if (qc->type)
1392                 return 0;
1393         else
1394                 return -EINVAL;
1395 }
1396
1397 static int vidioc_g_ctrl(struct file *file, void *priv,
1398                                 struct v4l2_control *ctrl)
1399 {
1400         struct em28xx_fh      *fh  = priv;
1401         struct em28xx         *dev = fh->dev;
1402         int                   rc;
1403
1404         rc = check_dev(dev);
1405         if (rc < 0)
1406                 return rc;
1407         rc = 0;
1408
1409         mutex_lock(&dev->lock);
1410
1411         /* Set an AC97 control */
1412         if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1413                 rc = ac97_get_ctrl(dev, ctrl);
1414         else
1415                 rc = 1;
1416
1417         /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1418         if (rc == 1) {
1419                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1420                 rc = 0;
1421         }
1422
1423         mutex_unlock(&dev->lock);
1424         return rc;
1425 }
1426
1427 static int vidioc_s_ctrl(struct file *file, void *priv,
1428                                 struct v4l2_control *ctrl)
1429 {
1430         struct em28xx_fh      *fh  = priv;
1431         struct em28xx         *dev = fh->dev;
1432         int                   rc;
1433
1434         rc = check_dev(dev);
1435         if (rc < 0)
1436                 return rc;
1437
1438         mutex_lock(&dev->lock);
1439
1440         /* Set an AC97 control */
1441         if (dev->audio_mode.ac97 != EM28XX_NO_AC97)
1442                 rc = ac97_set_ctrl(dev, ctrl);
1443         else
1444                 rc = 1;
1445
1446         /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
1447         if (rc == 1) {
1448                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1449
1450                 /*
1451                  * In the case of non-AC97 volume controls, we still need
1452                  * to do some setups at em28xx, in order to mute/unmute
1453                  * and to adjust audio volume. However, the value ranges
1454                  * should be checked by the corresponding V4L subdriver.
1455                  */
1456                 switch (ctrl->id) {
1457                 case V4L2_CID_AUDIO_MUTE:
1458                         dev->mute = ctrl->value;
1459                         rc = em28xx_audio_analog_set(dev);
1460                         break;
1461                 case V4L2_CID_AUDIO_VOLUME:
1462                         dev->volume = ctrl->value;
1463                         rc = em28xx_audio_analog_set(dev);
1464                 }
1465         }
1466
1467         mutex_unlock(&dev->lock);
1468         return rc;
1469 }
1470
1471 static int vidioc_g_tuner(struct file *file, void *priv,
1472                                 struct v4l2_tuner *t)
1473 {
1474         struct em28xx_fh      *fh  = priv;
1475         struct em28xx         *dev = fh->dev;
1476         int                   rc;
1477
1478         rc = check_dev(dev);
1479         if (rc < 0)
1480                 return rc;
1481
1482         if (0 != t->index)
1483                 return -EINVAL;
1484
1485         strcpy(t->name, "Tuner");
1486
1487         mutex_lock(&dev->lock);
1488         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1489         mutex_unlock(&dev->lock);
1490
1491         return 0;
1492 }
1493
1494 static int vidioc_s_tuner(struct file *file, void *priv,
1495                                 struct v4l2_tuner *t)
1496 {
1497         struct em28xx_fh      *fh  = priv;
1498         struct em28xx         *dev = fh->dev;
1499         int                   rc;
1500
1501         rc = check_dev(dev);
1502         if (rc < 0)
1503                 return rc;
1504
1505         if (0 != t->index)
1506                 return -EINVAL;
1507
1508         mutex_lock(&dev->lock);
1509         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1510         mutex_unlock(&dev->lock);
1511
1512         return 0;
1513 }
1514
1515 static int vidioc_g_frequency(struct file *file, void *priv,
1516                                 struct v4l2_frequency *f)
1517 {
1518         struct em28xx_fh      *fh  = priv;
1519         struct em28xx         *dev = fh->dev;
1520
1521         mutex_lock(&dev->lock);
1522         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1523         f->frequency = dev->ctl_freq;
1524         mutex_unlock(&dev->lock);
1525
1526         return 0;
1527 }
1528
1529 static int vidioc_s_frequency(struct file *file, void *priv,
1530                                 struct v4l2_frequency *f)
1531 {
1532         struct em28xx_fh      *fh  = priv;
1533         struct em28xx         *dev = fh->dev;
1534         int                   rc;
1535
1536         rc = check_dev(dev);
1537         if (rc < 0)
1538                 return rc;
1539
1540         if (0 != f->tuner)
1541                 return -EINVAL;
1542
1543         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1544                 return -EINVAL;
1545         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1546                 return -EINVAL;
1547
1548         mutex_lock(&dev->lock);
1549
1550         dev->ctl_freq = f->frequency;
1551         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1552
1553         mutex_unlock(&dev->lock);
1554
1555         return 0;
1556 }
1557
1558 #ifdef CONFIG_VIDEO_ADV_DEBUG
1559 static int em28xx_reg_len(int reg)
1560 {
1561         switch (reg) {
1562         case EM28XX_R40_AC97LSB:
1563         case EM28XX_R30_HSCALELOW:
1564         case EM28XX_R32_VSCALELOW:
1565                 return 2;
1566         default:
1567                 return 1;
1568         }
1569 }
1570
1571 static int vidioc_g_chip_ident(struct file *file, void *priv,
1572                struct v4l2_dbg_chip_ident *chip)
1573 {
1574         struct em28xx_fh      *fh  = priv;
1575         struct em28xx         *dev = fh->dev;
1576
1577         chip->ident = V4L2_IDENT_NONE;
1578         chip->revision = 0;
1579
1580         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1581
1582         return 0;
1583 }
1584
1585
1586 static int vidioc_g_register(struct file *file, void *priv,
1587                              struct v4l2_dbg_register *reg)
1588 {
1589         struct em28xx_fh      *fh  = priv;
1590         struct em28xx         *dev = fh->dev;
1591         int ret;
1592
1593         switch (reg->match.type) {
1594         case V4L2_CHIP_MATCH_AC97:
1595                 mutex_lock(&dev->lock);
1596                 ret = em28xx_read_ac97(dev, reg->reg);
1597                 mutex_unlock(&dev->lock);
1598                 if (ret < 0)
1599                         return ret;
1600
1601                 reg->val = ret;
1602                 reg->size = 1;
1603                 return 0;
1604         case V4L2_CHIP_MATCH_I2C_DRIVER:
1605                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1606                 return 0;
1607         case V4L2_CHIP_MATCH_I2C_ADDR:
1608                 /* TODO: is this correct? */
1609                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1610                 return 0;
1611         default:
1612                 if (!v4l2_chip_match_host(&reg->match))
1613                         return -EINVAL;
1614         }
1615
1616         /* Match host */
1617         reg->size = em28xx_reg_len(reg->reg);
1618         if (reg->size == 1) {
1619                 mutex_lock(&dev->lock);
1620                 ret = em28xx_read_reg(dev, reg->reg);
1621                 mutex_unlock(&dev->lock);
1622
1623                 if (ret < 0)
1624                         return ret;
1625
1626                 reg->val = ret;
1627         } else {
1628                 __le16 val = 0;
1629                 mutex_lock(&dev->lock);
1630                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1631                                                    reg->reg, (char *)&val, 2);
1632                 mutex_unlock(&dev->lock);
1633                 if (ret < 0)
1634                         return ret;
1635
1636                 reg->val = le16_to_cpu(val);
1637         }
1638
1639         return 0;
1640 }
1641
1642 static int vidioc_s_register(struct file *file, void *priv,
1643                              struct v4l2_dbg_register *reg)
1644 {
1645         struct em28xx_fh      *fh  = priv;
1646         struct em28xx         *dev = fh->dev;
1647         __le16 buf;
1648         int    rc;
1649
1650         switch (reg->match.type) {
1651         case V4L2_CHIP_MATCH_AC97:
1652                 mutex_lock(&dev->lock);
1653                 rc = em28xx_write_ac97(dev, reg->reg, reg->val);
1654                 mutex_unlock(&dev->lock);
1655
1656                 return rc;
1657         case V4L2_CHIP_MATCH_I2C_DRIVER:
1658                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1659                 return 0;
1660         case V4L2_CHIP_MATCH_I2C_ADDR:
1661                 /* TODO: is this correct? */
1662                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1663                 return 0;
1664         default:
1665                 if (!v4l2_chip_match_host(&reg->match))
1666                         return -EINVAL;
1667         }
1668
1669         /* Match host */
1670         buf = cpu_to_le16(reg->val);
1671
1672         mutex_lock(&dev->lock);
1673         rc = em28xx_write_regs(dev, reg->reg, (char *)&buf,
1674                                em28xx_reg_len(reg->reg));
1675         mutex_unlock(&dev->lock);
1676
1677         return rc;
1678 }
1679 #endif
1680
1681
1682 static int vidioc_cropcap(struct file *file, void *priv,
1683                                         struct v4l2_cropcap *cc)
1684 {
1685         struct em28xx_fh      *fh  = priv;
1686         struct em28xx         *dev = fh->dev;
1687
1688         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1689                 return -EINVAL;
1690
1691         cc->bounds.left = 0;
1692         cc->bounds.top = 0;
1693         cc->bounds.width = dev->width;
1694         cc->bounds.height = dev->height;
1695         cc->defrect = cc->bounds;
1696         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1697         cc->pixelaspect.denominator = 59;
1698
1699         return 0;
1700 }
1701
1702 static int vidioc_streamon(struct file *file, void *priv,
1703                                         enum v4l2_buf_type type)
1704 {
1705         struct em28xx_fh      *fh  = priv;
1706         struct em28xx         *dev = fh->dev;
1707         int                   rc = -EINVAL;
1708
1709         rc = check_dev(dev);
1710         if (rc < 0)
1711                 return rc;
1712
1713         if (unlikely(type != fh->type))
1714                 return -EINVAL;
1715
1716         em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
1717                         fh, type, fh->resources, dev->resources);
1718
1719         if (unlikely(!res_get(fh, get_ressource(fh))))
1720                 return -EBUSY;
1721
1722         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1723                 rc = videobuf_streamon(&fh->vb_vidq);
1724         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1725                 rc = videobuf_streamon(&fh->vb_vbiq);
1726
1727         return rc;
1728 }
1729
1730 static int vidioc_streamoff(struct file *file, void *priv,
1731                                         enum v4l2_buf_type type)
1732 {
1733         struct em28xx_fh      *fh  = priv;
1734         struct em28xx         *dev = fh->dev;
1735         int                   rc;
1736
1737         rc = check_dev(dev);
1738         if (rc < 0)
1739                 return rc;
1740
1741         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1742             fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)
1743                 return -EINVAL;
1744         if (type != fh->type)
1745                 return -EINVAL;
1746
1747         em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
1748                         fh, type, fh->resources, dev->resources);
1749
1750         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1751                 videobuf_streamoff(&fh->vb_vidq);
1752                 res_free(fh, EM28XX_RESOURCE_VIDEO);
1753         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1754                 videobuf_streamoff(&fh->vb_vbiq);
1755                 res_free(fh, EM28XX_RESOURCE_VBI);
1756         }
1757
1758         return 0;
1759 }
1760
1761 static int vidioc_querycap(struct file *file, void  *priv,
1762                                         struct v4l2_capability *cap)
1763 {
1764         struct em28xx_fh      *fh  = priv;
1765         struct em28xx         *dev = fh->dev;
1766
1767         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1768         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1769         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1770
1771         cap->version = EM28XX_VERSION_CODE;
1772
1773         cap->capabilities =
1774                         V4L2_CAP_SLICED_VBI_CAPTURE |
1775                         V4L2_CAP_VIDEO_CAPTURE |
1776                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1777
1778         if (dev->vbi_dev)
1779                 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1780
1781         if (dev->audio_mode.has_audio)
1782                 cap->capabilities |= V4L2_CAP_AUDIO;
1783
1784         if (dev->tuner_type != TUNER_ABSENT)
1785                 cap->capabilities |= V4L2_CAP_TUNER;
1786
1787         return 0;
1788 }
1789
1790 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1791                                         struct v4l2_fmtdesc *f)
1792 {
1793         if (unlikely(f->index >= ARRAY_SIZE(format)))
1794                 return -EINVAL;
1795
1796         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1797         f->pixelformat = format[f->index].fourcc;
1798
1799         return 0;
1800 }
1801
1802 /* Sliced VBI ioctls */
1803 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1804                                         struct v4l2_format *f)
1805 {
1806         struct em28xx_fh      *fh  = priv;
1807         struct em28xx         *dev = fh->dev;
1808         int                   rc;
1809
1810         rc = check_dev(dev);
1811         if (rc < 0)
1812                 return rc;
1813
1814         mutex_lock(&dev->lock);
1815
1816         f->fmt.sliced.service_set = 0;
1817         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1818
1819         if (f->fmt.sliced.service_set == 0)
1820                 rc = -EINVAL;
1821
1822         mutex_unlock(&dev->lock);
1823
1824         return rc;
1825 }
1826
1827 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1828                         struct v4l2_format *f)
1829 {
1830         struct em28xx_fh      *fh  = priv;
1831         struct em28xx         *dev = fh->dev;
1832         int                   rc;
1833
1834         rc = check_dev(dev);
1835         if (rc < 0)
1836                 return rc;
1837
1838         mutex_lock(&dev->lock);
1839         v4l2_device_call_all(&dev->v4l2_dev, 0, video, g_fmt, f);
1840         mutex_unlock(&dev->lock);
1841
1842         if (f->fmt.sliced.service_set == 0)
1843                 return -EINVAL;
1844
1845         return 0;
1846 }
1847
1848 /* RAW VBI ioctls */
1849
1850 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1851                                 struct v4l2_format *format)
1852 {
1853         struct em28xx_fh      *fh  = priv;
1854         struct em28xx         *dev = fh->dev;
1855
1856         format->fmt.vbi.samples_per_line = dev->vbi_width;
1857         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1858         format->fmt.vbi.offset = 0;
1859         format->fmt.vbi.flags = 0;
1860         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1861         format->fmt.vbi.count[0] = dev->vbi_height;
1862         format->fmt.vbi.count[1] = dev->vbi_height;
1863
1864         /* Varies by video standard (NTSC, PAL, etc.) */
1865         if (dev->norm & V4L2_STD_525_60) {
1866                 /* NTSC */
1867                 format->fmt.vbi.start[0] = 10;
1868                 format->fmt.vbi.start[1] = 273;
1869         } else if (dev->norm & V4L2_STD_625_50) {
1870                 /* PAL */
1871                 format->fmt.vbi.start[0] = 6;
1872                 format->fmt.vbi.start[1] = 318;
1873         }
1874
1875         return 0;
1876 }
1877
1878 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1879                                 struct v4l2_format *format)
1880 {
1881         struct em28xx_fh      *fh  = priv;
1882         struct em28xx         *dev = fh->dev;
1883
1884         format->fmt.vbi.samples_per_line = dev->vbi_width;
1885         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1886         format->fmt.vbi.offset = 0;
1887         format->fmt.vbi.flags = 0;
1888         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1889         format->fmt.vbi.count[0] = dev->vbi_height;
1890         format->fmt.vbi.count[1] = dev->vbi_height;
1891
1892         /* Varies by video standard (NTSC, PAL, etc.) */
1893         if (dev->norm & V4L2_STD_525_60) {
1894                 /* NTSC */
1895                 format->fmt.vbi.start[0] = 10;
1896                 format->fmt.vbi.start[1] = 273;
1897         } else if (dev->norm & V4L2_STD_625_50) {
1898                 /* PAL */
1899                 format->fmt.vbi.start[0] = 6;
1900                 format->fmt.vbi.start[1] = 318;
1901         }
1902
1903         return 0;
1904 }
1905
1906 static int vidioc_reqbufs(struct file *file, void *priv,
1907                           struct v4l2_requestbuffers *rb)
1908 {
1909         struct em28xx_fh      *fh  = priv;
1910         struct em28xx         *dev = fh->dev;
1911         int                   rc;
1912
1913         rc = check_dev(dev);
1914         if (rc < 0)
1915                 return rc;
1916
1917         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1918                 return videobuf_reqbufs(&fh->vb_vidq, rb);
1919         else
1920                 return videobuf_reqbufs(&fh->vb_vbiq, rb);
1921 }
1922
1923 static int vidioc_querybuf(struct file *file, void *priv,
1924                            struct v4l2_buffer *b)
1925 {
1926         struct em28xx_fh      *fh  = priv;
1927         struct em28xx         *dev = fh->dev;
1928         int                   rc;
1929
1930         rc = check_dev(dev);
1931         if (rc < 0)
1932                 return rc;
1933
1934         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1935                 return videobuf_querybuf(&fh->vb_vidq, b);
1936         else {
1937                 /* FIXME: I'm not sure yet whether this is a bug in zvbi or
1938                    the videobuf framework, but we probably shouldn't be
1939                    returning a buffer larger than that which was asked for.
1940                    At a minimum, it causes a crash in zvbi since it does
1941                    a memcpy based on the source buffer length */
1942                 int result = videobuf_querybuf(&fh->vb_vbiq, b);
1943                 b->length = dev->vbi_width * dev->vbi_height * 2;
1944
1945                 return result;
1946         }
1947 }
1948
1949 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1950 {
1951         struct em28xx_fh      *fh  = priv;
1952         struct em28xx         *dev = fh->dev;
1953         int                   rc;
1954
1955         rc = check_dev(dev);
1956         if (rc < 0)
1957                 return rc;
1958
1959         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1960                 return videobuf_qbuf(&fh->vb_vidq, b);
1961         else
1962                 return videobuf_qbuf(&fh->vb_vbiq, b);
1963 }
1964
1965 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1966 {
1967         struct em28xx_fh      *fh  = priv;
1968         struct em28xx         *dev = fh->dev;
1969         int                   rc;
1970
1971         rc = check_dev(dev);
1972         if (rc < 0)
1973                 return rc;
1974
1975         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1976                 return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags &
1977                                       O_NONBLOCK);
1978         else
1979                 return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags &
1980                                       O_NONBLOCK);
1981 }
1982
1983 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1984 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1985 {
1986         struct em28xx_fh  *fh = priv;
1987
1988         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1989                 return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1990         else
1991                 return videobuf_cgmbuf(&fh->vb_vbiq, mbuf, 8);
1992 }
1993 #endif
1994
1995
1996 /* ----------------------------------------------------------- */
1997 /* RADIO ESPECIFIC IOCTLS                                      */
1998 /* ----------------------------------------------------------- */
1999
2000 static int radio_querycap(struct file *file, void  *priv,
2001                           struct v4l2_capability *cap)
2002 {
2003         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2004
2005         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
2006         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
2007         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
2008
2009         cap->version = EM28XX_VERSION_CODE;
2010         cap->capabilities = V4L2_CAP_TUNER;
2011         return 0;
2012 }
2013
2014 static int radio_g_tuner(struct file *file, void *priv,
2015                          struct v4l2_tuner *t)
2016 {
2017         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2018
2019         if (unlikely(t->index > 0))
2020                 return -EINVAL;
2021
2022         strcpy(t->name, "Radio");
2023         t->type = V4L2_TUNER_RADIO;
2024
2025         mutex_lock(&dev->lock);
2026         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
2027         mutex_unlock(&dev->lock);
2028
2029         return 0;
2030 }
2031
2032 static int radio_enum_input(struct file *file, void *priv,
2033                             struct v4l2_input *i)
2034 {
2035         if (i->index != 0)
2036                 return -EINVAL;
2037         strcpy(i->name, "Radio");
2038         i->type = V4L2_INPUT_TYPE_TUNER;
2039
2040         return 0;
2041 }
2042
2043 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
2044 {
2045         if (unlikely(a->index))
2046                 return -EINVAL;
2047
2048         strcpy(a->name, "Radio");
2049         return 0;
2050 }
2051
2052 static int radio_s_tuner(struct file *file, void *priv,
2053                          struct v4l2_tuner *t)
2054 {
2055         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
2056
2057         if (0 != t->index)
2058                 return -EINVAL;
2059
2060         mutex_lock(&dev->lock);
2061         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
2062         mutex_unlock(&dev->lock);
2063
2064         return 0;
2065 }
2066
2067 static int radio_s_audio(struct file *file, void *fh,
2068                          struct v4l2_audio *a)
2069 {
2070         return 0;
2071 }
2072
2073 static int radio_s_input(struct file *file, void *fh, unsigned int i)
2074 {
2075         return 0;
2076 }
2077
2078 static int radio_queryctrl(struct file *file, void *priv,
2079                            struct v4l2_queryctrl *qc)
2080 {
2081         int i;
2082
2083         if (qc->id <  V4L2_CID_BASE ||
2084                 qc->id >= V4L2_CID_LASTP1)
2085                 return -EINVAL;
2086
2087         for (i = 0; i < ARRAY_SIZE(ac97_qctrl); i++) {
2088                 if (qc->id && qc->id == ac97_qctrl[i].id) {
2089                         memcpy(qc, &(ac97_qctrl[i]), sizeof(*qc));
2090                         return 0;
2091                 }
2092         }
2093
2094         return -EINVAL;
2095 }
2096
2097 /*
2098  * em28xx_v4l2_open()
2099  * inits the device and starts isoc transfer
2100  */
2101 static int em28xx_v4l2_open(struct file *filp)
2102 {
2103         int errCode = 0, radio = 0;
2104         struct video_device *vdev = video_devdata(filp);
2105         struct em28xx *dev = video_drvdata(filp);
2106         enum v4l2_buf_type fh_type = 0;
2107         struct em28xx_fh *fh;
2108         enum v4l2_field field;
2109
2110         switch (vdev->vfl_type) {
2111         case VFL_TYPE_GRABBER:
2112                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2113                 break;
2114         case VFL_TYPE_VBI:
2115                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
2116                 break;
2117         case VFL_TYPE_RADIO:
2118                 radio = 1;
2119                 break;
2120         }
2121
2122         mutex_lock(&dev->lock);
2123
2124         em28xx_videodbg("open dev=%s type=%s users=%d\n",
2125                         video_device_node_name(vdev), v4l2_type_names[fh_type],
2126                         dev->users);
2127
2128
2129         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
2130         if (!fh) {
2131                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
2132                 mutex_unlock(&dev->lock);
2133                 return -ENOMEM;
2134         }
2135         fh->dev = dev;
2136         fh->radio = radio;
2137         fh->type = fh_type;
2138         filp->private_data = fh;
2139
2140         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
2141                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
2142                 em28xx_set_alternate(dev);
2143                 em28xx_resolution_set(dev);
2144
2145                 /* Needed, since GPIO might have disabled power of
2146                    some i2c device
2147                  */
2148                 em28xx_wake_i2c(dev);
2149
2150         }
2151         if (fh->radio) {
2152                 em28xx_videodbg("video_open: setting radio device\n");
2153                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
2154         }
2155
2156         dev->users++;
2157
2158         if (dev->progressive)
2159                 field = V4L2_FIELD_NONE;
2160         else
2161                 field = V4L2_FIELD_INTERLACED;
2162
2163         videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
2164                                     NULL, &dev->slock,
2165                                     V4L2_BUF_TYPE_VIDEO_CAPTURE, field,
2166                                     sizeof(struct em28xx_buffer), fh);
2167
2168         videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops,
2169                                     NULL, &dev->slock,
2170                                     V4L2_BUF_TYPE_VBI_CAPTURE,
2171                                     V4L2_FIELD_SEQ_TB,
2172                                     sizeof(struct em28xx_buffer), fh);
2173
2174         mutex_unlock(&dev->lock);
2175
2176         return errCode;
2177 }
2178
2179 /*
2180  * em28xx_realease_resources()
2181  * unregisters the v4l2,i2c and usb devices
2182  * called when the device gets disconected or at module unload
2183 */
2184 void em28xx_release_analog_resources(struct em28xx *dev)
2185 {
2186
2187         /*FIXME: I2C IR should be disconnected */
2188
2189         if (dev->radio_dev) {
2190                 if (video_is_registered(dev->radio_dev))
2191                         video_unregister_device(dev->radio_dev);
2192                 else
2193                         video_device_release(dev->radio_dev);
2194                 dev->radio_dev = NULL;
2195         }
2196         if (dev->vbi_dev) {
2197                 em28xx_info("V4L2 device %s deregistered\n",
2198                             video_device_node_name(dev->vbi_dev));
2199                 if (video_is_registered(dev->vbi_dev))
2200                         video_unregister_device(dev->vbi_dev);
2201                 else
2202                         video_device_release(dev->vbi_dev);
2203                 dev->vbi_dev = NULL;
2204         }
2205         if (dev->vdev) {
2206                 em28xx_info("V4L2 device %s deregistered\n",
2207                             video_device_node_name(dev->vdev));
2208                 if (video_is_registered(dev->vdev))
2209                         video_unregister_device(dev->vdev);
2210                 else
2211                         video_device_release(dev->vdev);
2212                 dev->vdev = NULL;
2213         }
2214 }
2215
2216 /*
2217  * em28xx_v4l2_close()
2218  * stops streaming and deallocates all resources allocated by the v4l2
2219  * calls and ioctls
2220  */
2221 static int em28xx_v4l2_close(struct file *filp)
2222 {
2223         struct em28xx_fh *fh  = filp->private_data;
2224         struct em28xx    *dev = fh->dev;
2225         int              errCode;
2226
2227         em28xx_videodbg("users=%d\n", dev->users);
2228
2229         if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
2230                 videobuf_stop(&fh->vb_vidq);
2231                 res_free(fh, EM28XX_RESOURCE_VIDEO);
2232         }
2233
2234         if (res_check(fh, EM28XX_RESOURCE_VBI)) {
2235                 videobuf_stop(&fh->vb_vbiq);
2236                 res_free(fh, EM28XX_RESOURCE_VBI);
2237         }
2238
2239         if (dev->users == 1) {
2240                 /* the device is already disconnect,
2241                    free the remaining resources */
2242                 if (dev->state & DEV_DISCONNECTED) {
2243                         em28xx_release_resources(dev);
2244                         kfree(dev);
2245                         return 0;
2246                 }
2247
2248                 /* Save some power by putting tuner to sleep */
2249                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
2250
2251                 /* do this before setting alternate! */
2252                 em28xx_uninit_isoc(dev);
2253                 em28xx_set_mode(dev, EM28XX_SUSPEND);
2254
2255                 /* set alternate 0 */
2256                 dev->alt = 0;
2257                 em28xx_videodbg("setting alternate 0\n");
2258                 errCode = usb_set_interface(dev->udev, 0, 0);
2259                 if (errCode < 0) {
2260                         em28xx_errdev("cannot change alternate number to "
2261                                         "0 (error=%i)\n", errCode);
2262                 }
2263         }
2264
2265         videobuf_mmap_free(&fh->vb_vidq);
2266         videobuf_mmap_free(&fh->vb_vbiq);
2267         kfree(fh);
2268         dev->users--;
2269         wake_up_interruptible_nr(&dev->open, 1);
2270         return 0;
2271 }
2272
2273 /*
2274  * em28xx_v4l2_read()
2275  * will allocate buffers when called for the first time
2276  */
2277 static ssize_t
2278 em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2279                  loff_t *pos)
2280 {
2281         struct em28xx_fh *fh = filp->private_data;
2282         struct em28xx *dev = fh->dev;
2283         int rc;
2284
2285         rc = check_dev(dev);
2286         if (rc < 0)
2287                 return rc;
2288
2289         /* FIXME: read() is not prepared to allow changing the video
2290            resolution while streaming. Seems a bug at em28xx_set_fmt
2291          */
2292
2293         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2294                 if (res_locked(dev, EM28XX_RESOURCE_VIDEO))
2295                         return -EBUSY;
2296
2297                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2298                                         filp->f_flags & O_NONBLOCK);
2299         }
2300
2301
2302         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2303                 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2304                         return -EBUSY;
2305
2306                 return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
2307                                         filp->f_flags & O_NONBLOCK);
2308         }
2309
2310         return 0;
2311 }
2312
2313 /*
2314  * em28xx_v4l2_poll()
2315  * will allocate buffers when called for the first time
2316  */
2317 static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
2318 {
2319         struct em28xx_fh *fh = filp->private_data;
2320         struct em28xx *dev = fh->dev;
2321         int rc;
2322
2323         rc = check_dev(dev);
2324         if (rc < 0)
2325                 return rc;
2326
2327         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
2328                 if (!res_get(fh, EM28XX_RESOURCE_VIDEO))
2329                         return POLLERR;
2330                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2331         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2332                 if (!res_get(fh, EM28XX_RESOURCE_VBI))
2333                         return POLLERR;
2334                 return videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
2335         } else {
2336                 return POLLERR;
2337         }
2338 }
2339
2340 /*
2341  * em28xx_v4l2_mmap()
2342  */
2343 static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2344 {
2345         struct em28xx_fh *fh    = filp->private_data;
2346         struct em28xx    *dev   = fh->dev;
2347         int              rc;
2348
2349         rc = check_dev(dev);
2350         if (rc < 0)
2351                 return rc;
2352
2353         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2354                 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2355         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
2356                 rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma);
2357
2358         em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2359                 (unsigned long)vma->vm_start,
2360                 (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
2361                 rc);
2362
2363         return rc;
2364 }
2365
2366 static const struct v4l2_file_operations em28xx_v4l_fops = {
2367         .owner         = THIS_MODULE,
2368         .open          = em28xx_v4l2_open,
2369         .release       = em28xx_v4l2_close,
2370         .read          = em28xx_v4l2_read,
2371         .poll          = em28xx_v4l2_poll,
2372         .mmap          = em28xx_v4l2_mmap,
2373         .ioctl         = video_ioctl2,
2374 };
2375
2376 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2377         .vidioc_querycap            = vidioc_querycap,
2378         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
2379         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
2380         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
2381         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
2382         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
2383         .vidioc_s_fmt_vbi_cap       = vidioc_s_fmt_vbi_cap,
2384         .vidioc_g_audio             = vidioc_g_audio,
2385         .vidioc_s_audio             = vidioc_s_audio,
2386         .vidioc_cropcap             = vidioc_cropcap,
2387
2388         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2389         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2390         .vidioc_s_fmt_sliced_vbi_cap   = vidioc_try_set_sliced_vbi_cap,
2391
2392         .vidioc_reqbufs             = vidioc_reqbufs,
2393         .vidioc_querybuf            = vidioc_querybuf,
2394         .vidioc_qbuf                = vidioc_qbuf,
2395         .vidioc_dqbuf               = vidioc_dqbuf,
2396         .vidioc_g_std               = vidioc_g_std,
2397         .vidioc_s_std               = vidioc_s_std,
2398         .vidioc_g_parm              = vidioc_g_parm,
2399         .vidioc_s_parm              = vidioc_s_parm,
2400         .vidioc_enum_input          = vidioc_enum_input,
2401         .vidioc_g_input             = vidioc_g_input,
2402         .vidioc_s_input             = vidioc_s_input,
2403         .vidioc_queryctrl           = vidioc_queryctrl,
2404         .vidioc_g_ctrl              = vidioc_g_ctrl,
2405         .vidioc_s_ctrl              = vidioc_s_ctrl,
2406         .vidioc_streamon            = vidioc_streamon,
2407         .vidioc_streamoff           = vidioc_streamoff,
2408         .vidioc_g_tuner             = vidioc_g_tuner,
2409         .vidioc_s_tuner             = vidioc_s_tuner,
2410         .vidioc_g_frequency         = vidioc_g_frequency,
2411         .vidioc_s_frequency         = vidioc_s_frequency,
2412 #ifdef CONFIG_VIDEO_ADV_DEBUG
2413         .vidioc_g_register          = vidioc_g_register,
2414         .vidioc_s_register          = vidioc_s_register,
2415         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
2416 #endif
2417 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2418         .vidiocgmbuf                = vidiocgmbuf,
2419 #endif
2420 };
2421
2422 static const struct video_device em28xx_video_template = {
2423         .fops                       = &em28xx_v4l_fops,
2424         .release                    = video_device_release,
2425         .ioctl_ops                  = &video_ioctl_ops,
2426
2427         .tvnorms                    = V4L2_STD_ALL,
2428         .current_norm               = V4L2_STD_PAL,
2429 };
2430
2431 static const struct v4l2_file_operations radio_fops = {
2432         .owner         = THIS_MODULE,
2433         .open          = em28xx_v4l2_open,
2434         .release       = em28xx_v4l2_close,
2435         .ioctl         = video_ioctl2,
2436 };
2437
2438 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2439         .vidioc_querycap      = radio_querycap,
2440         .vidioc_g_tuner       = radio_g_tuner,
2441         .vidioc_enum_input    = radio_enum_input,
2442         .vidioc_g_audio       = radio_g_audio,
2443         .vidioc_s_tuner       = radio_s_tuner,
2444         .vidioc_s_audio       = radio_s_audio,
2445         .vidioc_s_input       = radio_s_input,
2446         .vidioc_queryctrl     = radio_queryctrl,
2447         .vidioc_g_ctrl        = vidioc_g_ctrl,
2448         .vidioc_s_ctrl        = vidioc_s_ctrl,
2449         .vidioc_g_frequency   = vidioc_g_frequency,
2450         .vidioc_s_frequency   = vidioc_s_frequency,
2451 #ifdef CONFIG_VIDEO_ADV_DEBUG
2452         .vidioc_g_register    = vidioc_g_register,
2453         .vidioc_s_register    = vidioc_s_register,
2454 #endif
2455 };
2456
2457 static struct video_device em28xx_radio_template = {
2458         .name                 = "em28xx-radio",
2459         .fops                 = &radio_fops,
2460         .ioctl_ops            = &radio_ioctl_ops,
2461 };
2462
2463 /******************************** usb interface ******************************/
2464
2465
2466
2467 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
2468                                         const struct video_device *template,
2469                                         const char *type_name)
2470 {
2471         struct video_device *vfd;
2472
2473         vfd = video_device_alloc();
2474         if (NULL == vfd)
2475                 return NULL;
2476
2477         *vfd            = *template;
2478         vfd->v4l2_dev   = &dev->v4l2_dev;
2479         vfd->release    = video_device_release;
2480         vfd->debug      = video_debug;
2481
2482         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
2483                  dev->name, type_name);
2484
2485         video_set_drvdata(vfd, dev);
2486         return vfd;
2487 }
2488
2489 int em28xx_register_analog_devices(struct em28xx *dev)
2490 {
2491       u8 val;
2492         int ret;
2493
2494         printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n",
2495                 dev->name,
2496                 (EM28XX_VERSION_CODE >> 16) & 0xff,
2497                 (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
2498
2499         /* set default norm */
2500         dev->norm = em28xx_video_template.current_norm;
2501         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
2502         dev->ctl_input = 0;
2503
2504         /* Analog specific initialization */
2505         dev->format = &format[0];
2506         em28xx_set_video_format(dev, format[0].fourcc,
2507                                 norm_maxw(dev), norm_maxh(dev));
2508
2509         video_mux(dev, dev->ctl_input);
2510
2511         /* Audio defaults */
2512         dev->mute = 1;
2513         dev->volume = 0x1f;
2514
2515 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2516         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
2517         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
2518                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
2519
2520         em28xx_set_outfmt(dev);
2521         em28xx_colorlevels_set_default(dev);
2522         em28xx_compression_disable(dev);
2523
2524         /* allocate and fill video video_device struct */
2525         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
2526         if (!dev->vdev) {
2527                 em28xx_errdev("cannot allocate video_device.\n");
2528                 return -ENODEV;
2529         }
2530
2531         /* register v4l2 video video_device */
2532         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2533                                        video_nr[dev->devno]);
2534         if (ret) {
2535                 em28xx_errdev("unable to register video device (error=%i).\n",
2536                               ret);
2537                 return ret;
2538         }
2539
2540         /* Allocate and fill vbi video_device struct */
2541         if (em28xx_vbi_supported(dev) == 1) {
2542                 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
2543                                                 "vbi");
2544
2545                 /* register v4l2 vbi video_device */
2546                 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2547                                             vbi_nr[dev->devno]);
2548                 if (ret < 0) {
2549                         em28xx_errdev("unable to register vbi device\n");
2550                         return ret;
2551                 }
2552         }
2553
2554         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
2555                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
2556                                                   "radio");
2557                 if (!dev->radio_dev) {
2558                         em28xx_errdev("cannot allocate video_device.\n");
2559                         return -ENODEV;
2560                 }
2561                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2562                                             radio_nr[dev->devno]);
2563                 if (ret < 0) {
2564                         em28xx_errdev("can't register radio device\n");
2565                         return ret;
2566                 }
2567                 em28xx_info("Registered radio device as %s\n",
2568                             video_device_node_name(dev->radio_dev));
2569         }
2570
2571         em28xx_info("V4L2 video device registered as %s\n",
2572                     video_device_node_name(dev->vdev));
2573
2574         if (dev->vbi_dev)
2575                 em28xx_info("V4L2 VBI device registered as %s\n",
2576                             video_device_node_name(dev->vbi_dev));
2577
2578         return 0;
2579 }