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

   1 /*
   2    em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
   3                     video capture devices
   4
   5    Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
   6                       Markus Rechberger <mrechberger@gmail.com>
   7                       Mauro Carvalho Chehab <mchehab@infradead.org>
   8                       Sascha Sommer <saschasommer@freenet.de>
   9    Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
  10
  11         Some parts based on SN9C10x PC Camera Controllers GPL driver made
  12                 by Luca Risolia <luca.risolia@studio.unibo.it>
  13
  14    This program is free software; you can redistribute it and/or modify
  15    it under the terms of the GNU General Public License as published by
  16    the Free Software Foundation; either version 2 of the License, or
  17    (at your option) any later version.
  18
  19    This program is distributed in the hope that it will be useful,
  20    but WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22    GNU General Public License for more details.
  23
  24    You should have received a copy of the GNU General Public License
  25    along with this program; if not, write to the Free Software
  26    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/init.h>
  30 #include <linux/list.h>
  31 #include <linux/module.h>
  32 #include <linux/kernel.h>
  33 #include <linux/bitmap.h>
  34 #include <linux/usb.h>
  35 #include <linux/i2c.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-event.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
  54 #define EM28XX_VERSION "0.2.0"
  55
  56 #define em28xx_videodbg(fmt, arg...) do {\
  57         if (video_debug) \
  58                 printk(KERN_INFO "%s %s :"fmt, \
  59                          dev->name, __func__ , ##arg); } while (0)
  60
  61 static unsigned int isoc_debug;
  62 module_param(isoc_debug, int, 0644);
  63 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  64
  65 #define em28xx_isocdbg(fmt, arg...) \
  66 do {\
  67         if (isoc_debug) { \
  68                 printk(KERN_INFO "%s %s :"fmt, \
  69                          dev->name, __func__ , ##arg); \
  70         } \
  71   } while (0)
  72
  73 MODULE_AUTHOR(DRIVER_AUTHOR);
  74 MODULE_DESCRIPTION(DRIVER_DESC);
  75 MODULE_LICENSE("GPL");
  76 MODULE_VERSION(EM28XX_VERSION);
  77
  78
  79 #define EM25XX_FRMDATAHDR_BYTE1                 0x02
  80 #define EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE     0x20
  81 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_END       0x02
  82 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_ID        0x01
  83 #define EM25XX_FRMDATAHDR_BYTE2_MASK    (EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE | \
  84                                          EM25XX_FRMDATAHDR_BYTE2_FRAME_END |   \
  85                                          EM25XX_FRMDATAHDR_BYTE2_FRAME_ID)
  86
  87
  88 static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
  89 static unsigned int vbi_nr[]   = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
  90 static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
  91
  92 module_param_array(video_nr, int, NULL, 0444);
  93 module_param_array(vbi_nr, int, NULL, 0444);
  94 module_param_array(radio_nr, int, NULL, 0444);
  95 MODULE_PARM_DESC(video_nr, "video device numbers");
  96 MODULE_PARM_DESC(vbi_nr,   "vbi device numbers");
  97 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  98
  99 static unsigned int video_debug;
 100 module_param(video_debug, int, 0644);
 101 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
 102
 103 /* supported video standards */
 104 static struct em28xx_fmt format[] = {
 105         {
 106                 .name     = "16 bpp YUY2, 4:2:2, packed",
 107                 .fourcc   = V4L2_PIX_FMT_YUYV,
 108                 .depth    = 16,
 109                 .reg      = EM28XX_OUTFMT_YUV422_Y0UY1V,
 110         }, {
 111                 .name     = "16 bpp RGB 565, LE",
 112                 .fourcc   = V4L2_PIX_FMT_RGB565,
 113                 .depth    = 16,
 114                 .reg      = EM28XX_OUTFMT_RGB_16_656,
 115         }, {
 116                 .name     = "8 bpp Bayer BGBG..GRGR",
 117                 .fourcc   = V4L2_PIX_FMT_SBGGR8,
 118                 .depth    = 8,
 119                 .reg      = EM28XX_OUTFMT_RGB_8_BGBG,
 120         }, {
 121                 .name     = "8 bpp Bayer GRGR..BGBG",
 122                 .fourcc   = V4L2_PIX_FMT_SGRBG8,
 123                 .depth    = 8,
 124                 .reg      = EM28XX_OUTFMT_RGB_8_GRGR,
 125         }, {
 126                 .name     = "8 bpp Bayer GBGB..RGRG",
 127                 .fourcc   = V4L2_PIX_FMT_SGBRG8,
 128                 .depth    = 8,
 129                 .reg      = EM28XX_OUTFMT_RGB_8_GBGB,
 130         }, {
 131                 .name     = "12 bpp YUV411",
 132                 .fourcc   = V4L2_PIX_FMT_YUV411P,
 133                 .depth    = 12,
 134                 .reg      = EM28XX_OUTFMT_YUV411,
 135         },
 136 };
 137
 138 /* ------------------------------------------------------------------
 139         DMA and thread functions
 140    ------------------------------------------------------------------*/
 141
 142 /*
 143  * Finish the current buffer
 144  */
 145 static inline void finish_buffer(struct em28xx *dev,
 146                                  struct em28xx_buffer *buf)
 147 {
 148         em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
 149
 150         buf->vb.v4l2_buf.sequence = dev->field_count++;
 151         buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
 152         v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
 153
 154         vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
 155 }
 156
 157 /*
 158  * Copy picture data from USB buffer to videobuf buffer
 159  */
 160 static void em28xx_copy_video(struct em28xx *dev,
 161                               struct em28xx_buffer *buf,
 162                               unsigned char *usb_buf,
 163                               unsigned long len)
 164 {
 165         void *fieldstart, *startwrite, *startread;
 166         int  linesdone, currlinedone, offset, lencopy, remain;
 167         int bytesperline = dev->width << 1;
 168
 169         if (buf->pos + len > buf->length)
 170                 len = buf->length - buf->pos;
 171
 172         startread = usb_buf;
 173         remain = len;
 174
 175         if (dev->progressive || buf->top_field)
 176                 fieldstart = buf->vb_buf;
 177         else /* interlaced mode, even nr. of lines */
 178                 fieldstart = buf->vb_buf + bytesperline;
 179
 180         linesdone = buf->pos / bytesperline;
 181         currlinedone = buf->pos % bytesperline;
 182
 183         if (dev->progressive)
 184                 offset = linesdone * bytesperline + currlinedone;
 185         else
 186                 offset = linesdone * bytesperline * 2 + currlinedone;
 187
 188         startwrite = fieldstart + offset;
 189         lencopy = bytesperline - currlinedone;
 190         lencopy = lencopy > remain ? remain : lencopy;
 191
 192         if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) {
 193                 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 194                               ((char *)startwrite + lencopy) -
 195                               ((char *)buf->vb_buf + buf->length));
 196                 remain = (char *)buf->vb_buf + buf->length -
 197                          (char *)startwrite;
 198                 lencopy = remain;
 199         }
 200         if (lencopy <= 0)
 201                 return;
 202         memcpy(startwrite, startread, lencopy);
 203
 204         remain -= lencopy;
 205
 206         while (remain > 0) {
 207                 if (dev->progressive)
 208                         startwrite += lencopy;
 209                 else
 210                         startwrite += lencopy + bytesperline;
 211                 startread += lencopy;
 212                 if (bytesperline > remain)
 213                         lencopy = remain;
 214                 else
 215                         lencopy = bytesperline;
 216
 217                 if ((char *)startwrite + lencopy > (char *)buf->vb_buf +
 218                     buf->length) {
 219                         em28xx_isocdbg("Overflow of %zi bytes past buffer end"
 220                                        "(2)\n",
 221                                        ((char *)startwrite + lencopy) -
 222                                        ((char *)buf->vb_buf + buf->length));
 223                         lencopy = remain = (char *)buf->vb_buf + buf->length -
 224                                 (char *)startwrite;
 225                 }
 226                 if (lencopy <= 0)
 227                         break;
 228
 229                 memcpy(startwrite, startread, lencopy);
 230
 231                 remain -= lencopy;
 232         }
 233
 234         buf->pos += len;
 235 }
 236
 237 /*
 238  * Copy VBI data from USB buffer to videobuf buffer
 239  */
 240 static void em28xx_copy_vbi(struct em28xx *dev,
 241                             struct em28xx_buffer *buf,
 242                             unsigned char *usb_buf,
 243                             unsigned long len)
 244 {
 245         unsigned int offset;
 246
 247         if (buf->pos + len > buf->length)
 248                 len = buf->length - buf->pos;
 249
 250         offset = buf->pos;
 251         /* Make sure the bottom field populates the second half of the frame */
 252         if (buf->top_field == 0)
 253                 offset += dev->vbi_width * dev->vbi_height;
 254
 255         memcpy(buf->vb_buf + offset, usb_buf, len);
 256         buf->pos += len;
 257 }
 258
 259 static inline void print_err_status(struct em28xx *dev,
 260                                      int packet, int status)
 261 {
 262         char *errmsg = "Unknown";
 263
 264         switch (status) {
 265         case -ENOENT:
 266                 errmsg = "unlinked synchronuously";
 267                 break;
 268         case -ECONNRESET:
 269                 errmsg = "unlinked asynchronuously";
 270                 break;
 271         case -ENOSR:
 272                 errmsg = "Buffer error (overrun)";
 273                 break;
 274         case -EPIPE:
 275                 errmsg = "Stalled (device not responding)";
 276                 break;
 277         case -EOVERFLOW:
 278                 errmsg = "Babble (bad cable?)";
 279                 break;
 280         case -EPROTO:
 281                 errmsg = "Bit-stuff error (bad cable?)";
 282                 break;
 283         case -EILSEQ:
 284                 errmsg = "CRC/Timeout (could be anything)";
 285                 break;
 286         case -ETIME:
 287                 errmsg = "Device does not respond";
 288                 break;
 289         }
 290         if (packet < 0) {
 291                 em28xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 292         } else {
 293                 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
 294                                packet, status, errmsg);
 295         }
 296 }
 297
 298 /*
 299  * get the next available buffer from dma queue
 300  */
 301 static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
 302                                                  struct em28xx_dmaqueue *dma_q)
 303 {
 304         struct em28xx_buffer *buf;
 305
 306         if (list_empty(&dma_q->active)) {
 307                 em28xx_isocdbg("No active queue to serve\n");
 308                 return NULL;
 309         }
 310
 311         /* Get the next buffer */
 312         buf = list_entry(dma_q->active.next, struct em28xx_buffer, list);
 313         /* Cleans up buffer - Useful for testing for frame/URB loss */
 314         list_del(&buf->list);
 315         buf->pos = 0;
 316         buf->vb_buf = buf->mem;
 317
 318         return buf;
 319 }
 320
 321 /*
 322  * Finish the current buffer if completed and prepare for the next field
 323  */
 324 static struct em28xx_buffer *
 325 finish_field_prepare_next(struct em28xx *dev,
 326                           struct em28xx_buffer *buf,
 327                           struct em28xx_dmaqueue *dma_q)
 328 {
 329         if (dev->progressive || dev->top_field) { /* Brand new frame */
 330                 if (buf != NULL)
 331                         finish_buffer(dev, buf);
 332                 buf = get_next_buf(dev, dma_q);
 333         }
 334         if (buf != NULL) {
 335                 buf->top_field = dev->top_field;
 336                 buf->pos = 0;
 337         }
 338
 339         return buf;
 340 }
 341
 342 /*
 343  * Process data packet according to the em2710/em2750/em28xx frame data format
 344  */
 345 static inline void process_frame_data_em28xx(struct em28xx *dev,
 346                                              unsigned char *data_pkt,
 347                                              unsigned int  data_len)
 348 {
 349         struct em28xx_buffer    *buf = dev->usb_ctl.vid_buf;
 350         struct em28xx_buffer    *vbi_buf = dev->usb_ctl.vbi_buf;
 351         struct em28xx_dmaqueue  *dma_q = &dev->vidq;
 352         struct em28xx_dmaqueue  *vbi_dma_q = &dev->vbiq;
 353
 354         /* capture type 0 = vbi start
 355            capture type 1 = vbi in progress
 356            capture type 2 = video start
 357            capture type 3 = video in progress */
 358         if (data_len >= 4) {
 359                 /* NOTE: Headers are always 4 bytes and
 360                  * never split across packets */
 361                 if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 &&
 362                     data_pkt[2] == 0x88 && data_pkt[3] == 0x88) {
 363                         /* Continuation */
 364                         data_pkt += 4;
 365                         data_len -= 4;
 366                 } else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) {
 367                         /* Field start (VBI mode) */
 368                         dev->capture_type = 0;
 369                         dev->vbi_read = 0;
 370                         em28xx_isocdbg("VBI START HEADER !!!\n");
 371                         dev->top_field = !(data_pkt[2] & 1);
 372                         data_pkt += 4;
 373                         data_len -= 4;
 374                 } else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) {
 375                         /* Field start (VBI disabled) */
 376                         dev->capture_type = 2;
 377                         em28xx_isocdbg("VIDEO START HEADER !!!\n");
 378                         dev->top_field = !(data_pkt[2] & 1);
 379                         data_pkt += 4;
 380                         data_len -= 4;
 381                 }
 382         }
 383         /* NOTE: With bulk transfers, intermediate data packets
 384          * have no continuation header */
 385
 386         if (dev->capture_type == 0) {
 387                 vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q);
 388                 dev->usb_ctl.vbi_buf = vbi_buf;
 389                 dev->capture_type = 1;
 390         }
 391
 392         if (dev->capture_type == 1) {
 393                 int vbi_size = dev->vbi_width * dev->vbi_height;
 394                 int vbi_data_len = ((dev->vbi_read + data_len) > vbi_size) ?
 395                                    (vbi_size - dev->vbi_read) : data_len;
 396
 397                 /* Copy VBI data */
 398                 if (vbi_buf != NULL)
 399                         em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len);
 400                 dev->vbi_read += vbi_data_len;
 401
 402                 if (vbi_data_len < data_len) {
 403                         /* Continue with copying video data */
 404                         dev->capture_type = 2;
 405                         data_pkt += vbi_data_len;
 406                         data_len -= vbi_data_len;
 407                 }
 408         }
 409
 410         if (dev->capture_type == 2) {
 411                 buf = finish_field_prepare_next(dev, buf, dma_q);
 412                 dev->usb_ctl.vid_buf = buf;
 413                 dev->capture_type = 3;
 414         }
 415
 416         if (dev->capture_type == 3 && buf != NULL && data_len > 0)
 417                 em28xx_copy_video(dev, buf, data_pkt, data_len);
 418 }
 419
 420 /*
 421  * Process data packet according to the em25xx/em276x/7x/8x frame data format
 422  */
 423 static inline void process_frame_data_em25xx(struct em28xx *dev,
 424                                              unsigned char *data_pkt,
 425                                              unsigned int  data_len)
 426 {
 427         struct em28xx_buffer    *buf = dev->usb_ctl.vid_buf;
 428         struct em28xx_dmaqueue  *dmaq = &dev->vidq;
 429         bool frame_end = 0;
 430
 431         /* Check for header */
 432         /* NOTE: at least with bulk transfers, only the first packet
 433          * has a header and has always set the FRAME_END bit         */
 434         if (data_len >= 2) {    /* em25xx header is only 2 bytes long */
 435                 if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) &&
 436                     ((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) {
 437                         dev->top_field = !(data_pkt[1] &
 438                                            EM25XX_FRMDATAHDR_BYTE2_FRAME_ID);
 439                         frame_end = data_pkt[1] &
 440                                     EM25XX_FRMDATAHDR_BYTE2_FRAME_END;
 441                         data_pkt += 2;
 442                         data_len -= 2;
 443                 }
 444
 445                 /* Finish field and prepare next (BULK only) */
 446                 if (dev->analog_xfer_bulk && frame_end) {
 447                         buf = finish_field_prepare_next(dev, buf, dmaq);
 448                         dev->usb_ctl.vid_buf = buf;
 449                 }
 450                 /* NOTE: in ISOC mode when a new frame starts and buf==NULL,
 451                  * we COULD already prepare a buffer here to avoid skipping the
 452                  * first frame.
 453                  */
 454         }
 455
 456         /* Copy data */
 457         if (buf != NULL && data_len > 0)
 458                 em28xx_copy_video(dev, buf, data_pkt, data_len);
 459
 460         /* Finish frame (ISOC only) => avoids lag of 1 frame */
 461         if (!dev->analog_xfer_bulk && frame_end) {
 462                 buf = finish_field_prepare_next(dev, buf, dmaq);
 463                 dev->usb_ctl.vid_buf = buf;
 464         }
 465
 466         /* NOTE: Tested with USB bulk transfers only !
 467          * The wording in the datasheet suggests that isoc might work different.
 468          * The current code assumes that with isoc transfers each packet has a
 469          * header like with the other em28xx devices.
 470          */
 471         /* NOTE: Support for interlaced mode is pure theory. It has not been
 472          * tested and it is unknown if these devices actually support it. */
 473         /* NOTE: No VBI support yet (these chips likely do not support VBI). */
 474 }
 475
 476 /* Processes and copies the URB data content (video and VBI data) */
 477 static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb)
 478 {
 479         int xfer_bulk, num_packets, i;
 480         unsigned char *usb_data_pkt;
 481         unsigned int usb_data_len;
 482
 483         if (!dev)
 484                 return 0;
 485
 486         if (dev->disconnected)
 487                 return 0;
 488
 489         if (urb->status < 0)
 490                 print_err_status(dev, -1, urb->status);
 491
 492         xfer_bulk = usb_pipebulk(urb->pipe);
 493
 494         if (xfer_bulk) /* bulk */
 495                 num_packets = 1;
 496         else /* isoc */
 497                 num_packets = urb->number_of_packets;
 498
 499         for (i = 0; i < num_packets; i++) {
 500                 if (xfer_bulk) { /* bulk */
 501                         usb_data_len = urb->actual_length;
 502
 503                         usb_data_pkt = urb->transfer_buffer;
 504                 } else { /* isoc */
 505                         if (urb->iso_frame_desc[i].status < 0) {
 506                                 print_err_status(dev, i,
 507                                                  urb->iso_frame_desc[i].status);
 508                                 if (urb->iso_frame_desc[i].status != -EPROTO)
 509                                         continue;
 510                         }
 511
 512                         usb_data_len = urb->iso_frame_desc[i].actual_length;
 513                         if (usb_data_len > dev->max_pkt_size) {
 514                                 em28xx_isocdbg("packet bigger than packet size");
 515                                 continue;
 516                         }
 517
 518                         usb_data_pkt = urb->transfer_buffer +
 519                                        urb->iso_frame_desc[i].offset;
 520                 }
 521
 522                 if (usb_data_len == 0) {
 523                         /* NOTE: happens very often with isoc transfers */
 524                         /* em28xx_usbdbg("packet %d is empty",i); - spammy */
 525                         continue;
 526                 }
 527
 528                 if (dev->is_em25xx)
 529                         process_frame_data_em25xx(dev,
 530                                                   usb_data_pkt, usb_data_len);
 531                 else
 532                         process_frame_data_em28xx(dev,
 533                                                   usb_data_pkt, usb_data_len);
 534
 535         }
 536         return 1;
 537 }
 538
 539
 540 static int get_ressource(enum v4l2_buf_type f_type)
 541 {
 542         switch (f_type) {
 543         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 544                 return EM28XX_RESOURCE_VIDEO;
 545         case V4L2_BUF_TYPE_VBI_CAPTURE:
 546                 return EM28XX_RESOURCE_VBI;
 547         default:
 548                 BUG();
 549                 return 0;
 550         }
 551 }
 552
 553 /* Usage lock check functions */
 554 static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type)
 555 {
 556         int res_type = get_ressource(f_type);
 557
 558         /* is it free? */
 559         if (dev->resources & res_type) {
 560                 /* no, someone else uses it */
 561                 return -EBUSY;
 562         }
 563
 564         /* it's free, grab it */
 565         dev->resources |= res_type;
 566         em28xx_videodbg("res: get %d\n", res_type);
 567         return 0;
 568 }
 569
 570 static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type)
 571 {
 572         int res_type = get_ressource(f_type);
 573
 574         dev->resources &= ~res_type;
 575         em28xx_videodbg("res: put %d\n", res_type);
 576 }
 577
 578 /* ------------------------------------------------------------------
 579         Videobuf2 operations
 580    ------------------------------------------------------------------*/
 581
 582 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
 583                        unsigned int *nbuffers, unsigned int *nplanes,
 584                        unsigned int sizes[], void *alloc_ctxs[])
 585 {
 586         struct em28xx *dev = vb2_get_drv_priv(vq);
 587         unsigned long size;
 588
 589         if (fmt)
 590                 size = fmt->fmt.pix.sizeimage;
 591         else
 592                 size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
 593
 594         if (size == 0)
 595                 return -EINVAL;
 596
 597         if (0 == *nbuffers)
 598                 *nbuffers = 32;
 599
 600         *nplanes = 1;
 601         sizes[0] = size;
 602
 603         return 0;
 604 }
 605
 606 static int
 607 buffer_prepare(struct vb2_buffer *vb)
 608 {
 609         struct em28xx        *dev = vb2_get_drv_priv(vb->vb2_queue);
 610         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 611         unsigned long size;
 612
 613         em28xx_videodbg("%s, field=%d\n", __func__, vb->v4l2_buf.field);
 614
 615         size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
 616
 617         if (vb2_plane_size(vb, 0) < size) {
 618                 em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n",
 619                                 __func__, vb2_plane_size(vb, 0), size);
 620                 return -EINVAL;
 621         }
 622         vb2_set_plane_payload(&buf->vb, 0, size);
 623
 624         return 0;
 625 }
 626
 627 int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
 628 {
 629         struct em28xx *dev = vb2_get_drv_priv(vq);
 630         struct v4l2_frequency f;
 631         int rc = 0;
 632
 633         em28xx_videodbg("%s\n", __func__);
 634
 635         /* Make sure streaming is not already in progress for this type
 636            of filehandle (e.g. video, vbi) */
 637         rc = res_get(dev, vq->type);
 638         if (rc)
 639                 return rc;
 640
 641         if (dev->streaming_users == 0) {
 642                 /* First active streaming user, so allocate all the URBs */
 643
 644                 /* Allocate the USB bandwidth */
 645                 em28xx_set_alternate(dev);
 646
 647                 /* Needed, since GPIO might have disabled power of
 648                    some i2c device
 649                 */
 650                 em28xx_wake_i2c(dev);
 651
 652                 dev->capture_type = -1;
 653                 rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
 654                                           dev->analog_xfer_bulk,
 655                                           EM28XX_NUM_BUFS,
 656                                           dev->max_pkt_size,
 657                                           dev->packet_multiplier,
 658                                           em28xx_urb_data_copy);
 659                 if (rc < 0)
 660                         return rc;
 661
 662                 /*
 663                  * djh: it's not clear whether this code is still needed.  I'm
 664                  * leaving it in here for now entirely out of concern for
 665                  * backward compatibility (the old code did it)
 666                  */
 667
 668                 /* Ask tuner to go to analog or radio mode */
 669                 memset(&f, 0, sizeof(f));
 670                 f.frequency = dev->ctl_freq;
 671                 if (vq->owner && vq->owner->vdev->vfl_type == VFL_TYPE_RADIO)
 672                         f.type = V4L2_TUNER_RADIO;
 673                 else
 674                         f.type = V4L2_TUNER_ANALOG_TV;
 675                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
 676         }
 677
 678         dev->streaming_users++;
 679
 680         return rc;
 681 }
 682
 683 static int em28xx_stop_streaming(struct vb2_queue *vq)
 684 {
 685         struct em28xx *dev = vb2_get_drv_priv(vq);
 686         struct em28xx_dmaqueue *vidq = &dev->vidq;
 687         unsigned long flags = 0;
 688
 689         em28xx_videodbg("%s\n", __func__);
 690
 691         res_free(dev, vq->type);
 692
 693         if (dev->streaming_users-- == 1) {
 694                 /* Last active user, so shutdown all the URBS */
 695                 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
 696         }
 697
 698         spin_lock_irqsave(&dev->slock, flags);
 699         while (!list_empty(&vidq->active)) {
 700                 struct em28xx_buffer *buf;
 701                 buf = list_entry(vidq->active.next, struct em28xx_buffer, list);
 702                 list_del(&buf->list);
 703                 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
 704         }
 705         dev->usb_ctl.vid_buf = NULL;
 706         spin_unlock_irqrestore(&dev->slock, flags);
 707
 708         return 0;
 709 }
 710
 711 int em28xx_stop_vbi_streaming(struct vb2_queue *vq)
 712 {
 713         struct em28xx *dev = vb2_get_drv_priv(vq);
 714         struct em28xx_dmaqueue *vbiq = &dev->vbiq;
 715         unsigned long flags = 0;
 716
 717         em28xx_videodbg("%s\n", __func__);
 718
 719         res_free(dev, vq->type);
 720
 721         if (dev->streaming_users-- == 1) {
 722                 /* Last active user, so shutdown all the URBS */
 723                 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
 724         }
 725
 726         spin_lock_irqsave(&dev->slock, flags);
 727         while (!list_empty(&vbiq->active)) {
 728                 struct em28xx_buffer *buf;
 729                 buf = list_entry(vbiq->active.next, struct em28xx_buffer, list);
 730                 list_del(&buf->list);
 731                 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
 732         }
 733         dev->usb_ctl.vbi_buf = NULL;
 734         spin_unlock_irqrestore(&dev->slock, flags);
 735
 736         return 0;
 737 }
 738
 739 static void
 740 buffer_queue(struct vb2_buffer *vb)
 741 {
 742         struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
 743         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 744         struct em28xx_dmaqueue *vidq = &dev->vidq;
 745         unsigned long flags = 0;
 746
 747         em28xx_videodbg("%s\n", __func__);
 748         buf->mem = vb2_plane_vaddr(vb, 0);
 749         buf->length = vb2_plane_size(vb, 0);
 750
 751         spin_lock_irqsave(&dev->slock, flags);
 752         list_add_tail(&buf->list, &vidq->active);
 753         spin_unlock_irqrestore(&dev->slock, flags);
 754 }
 755
 756 static struct vb2_ops em28xx_video_qops = {
 757         .queue_setup    = queue_setup,
 758         .buf_prepare    = buffer_prepare,
 759         .buf_queue      = buffer_queue,
 760         .start_streaming = em28xx_start_analog_streaming,
 761         .stop_streaming = em28xx_stop_streaming,
 762         .wait_prepare   = vb2_ops_wait_prepare,
 763         .wait_finish    = vb2_ops_wait_finish,
 764 };
 765
 766 int em28xx_vb2_setup(struct em28xx *dev)
 767 {
 768         int rc;
 769         struct vb2_queue *q;
 770
 771         /* Setup Videobuf2 for Video capture */
 772         q = &dev->vb_vidq;
 773         q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 774         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
 775         q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 776         q->drv_priv = dev;
 777         q->buf_struct_size = sizeof(struct em28xx_buffer);
 778         q->ops = &em28xx_video_qops;
 779         q->mem_ops = &vb2_vmalloc_memops;
 780
 781         rc = vb2_queue_init(q);
 782         if (rc < 0)
 783                 return rc;
 784
 785         /* Setup Videobuf2 for VBI capture */
 786         q = &dev->vb_vbiq;
 787         q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 788         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
 789         q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 790         q->drv_priv = dev;
 791         q->buf_struct_size = sizeof(struct em28xx_buffer);
 792         q->ops = &em28xx_vbi_qops;
 793         q->mem_ops = &vb2_vmalloc_memops;
 794
 795         rc = vb2_queue_init(q);
 796         if (rc < 0)
 797                 return rc;
 798
 799         return 0;
 800 }
 801
 802 /*********************  v4l2 interface  **************************************/
 803
 804 static void video_mux(struct em28xx *dev, int index)
 805 {
 806         dev->ctl_input = index;
 807         dev->ctl_ainput = INPUT(index)->amux;
 808         dev->ctl_aoutput = INPUT(index)->aout;
 809
 810         if (!dev->ctl_aoutput)
 811                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 812
 813         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
 814                         INPUT(index)->vmux, 0, 0);
 815
 816         if (dev->board.has_msp34xx) {
 817                 if (dev->i2s_speed) {
 818                         v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
 819                                 s_i2s_clock_freq, dev->i2s_speed);
 820                 }
 821                 /* Note: this is msp3400 specific */
 822                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 823                          dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
 824         }
 825
 826         if (dev->board.adecoder != EM28XX_NOADECODER) {
 827                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 828                         dev->ctl_ainput, dev->ctl_aoutput, 0);
 829         }
 830
 831         em28xx_audio_analog_set(dev);
 832 }
 833
 834 void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
 835 {
 836         struct em28xx *dev = priv;
 837
 838         /*
 839          * In the case of non-AC97 volume controls, we still need
 840          * to do some setups at em28xx, in order to mute/unmute
 841          * and to adjust audio volume. However, the value ranges
 842          * should be checked by the corresponding V4L subdriver.
 843          */
 844         switch (ctrl->id) {
 845         case V4L2_CID_AUDIO_MUTE:
 846                 dev->mute = ctrl->val;
 847                 em28xx_audio_analog_set(dev);
 848                 break;
 849         case V4L2_CID_AUDIO_VOLUME:
 850                 dev->volume = ctrl->val;
 851                 em28xx_audio_analog_set(dev);
 852                 break;
 853         }
 854 }
 855
 856 static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl)
 857 {
 858         struct em28xx *dev = container_of(ctrl->handler, struct em28xx, ctrl_handler);
 859         int ret = -EINVAL;
 860
 861         switch (ctrl->id) {
 862         case V4L2_CID_AUDIO_MUTE:
 863                 dev->mute = ctrl->val;
 864                 ret = em28xx_audio_analog_set(dev);
 865                 break;
 866         case V4L2_CID_AUDIO_VOLUME:
 867                 dev->volume = ctrl->val;
 868                 ret = em28xx_audio_analog_set(dev);
 869                 break;
 870         case V4L2_CID_CONTRAST:
 871                 ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val);
 872                 break;
 873         case V4L2_CID_BRIGHTNESS:
 874                 ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val);
 875                 break;
 876         case V4L2_CID_SATURATION:
 877                 ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val);
 878                 break;
 879         case V4L2_CID_BLUE_BALANCE:
 880                 ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val);
 881                 break;
 882         case V4L2_CID_RED_BALANCE:
 883                 ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val);
 884                 break;
 885         case V4L2_CID_SHARPNESS:
 886                 ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val);
 887                 break;
 888         }
 889
 890         return (ret < 0) ? ret : 0;
 891 }
 892
 893 const struct v4l2_ctrl_ops em28xx_ctrl_ops = {
 894         .s_ctrl = em28xx_s_ctrl,
 895 };
 896
 897 static void size_to_scale(struct em28xx *dev,
 898                         unsigned int width, unsigned int height,
 899                         unsigned int *hscale, unsigned int *vscale)
 900 {
 901         unsigned int          maxw = norm_maxw(dev);
 902         unsigned int          maxh = norm_maxh(dev);
 903
 904         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 905         if (*hscale > EM28XX_HVSCALE_MAX)
 906                 *hscale = EM28XX_HVSCALE_MAX;
 907
 908         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 909         if (*vscale > EM28XX_HVSCALE_MAX)
 910                 *vscale = EM28XX_HVSCALE_MAX;
 911 }
 912
 913 static void scale_to_size(struct em28xx *dev,
 914                           unsigned int hscale, unsigned int vscale,
 915                           unsigned int *width, unsigned int *height)
 916 {
 917         unsigned int          maxw = norm_maxw(dev);
 918         unsigned int          maxh = norm_maxh(dev);
 919
 920         *width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 921         *height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 922 }
 923
 924 /* ------------------------------------------------------------------
 925         IOCTL vidioc handling
 926    ------------------------------------------------------------------*/
 927
 928 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 929                                         struct v4l2_format *f)
 930 {
 931         struct em28xx_fh      *fh  = priv;
 932         struct em28xx         *dev = fh->dev;
 933
 934         f->fmt.pix.width = dev->width;
 935         f->fmt.pix.height = dev->height;
 936         f->fmt.pix.pixelformat = dev->format->fourcc;
 937         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 938         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
 939         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 940
 941         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
 942         if (dev->progressive)
 943                 f->fmt.pix.field = V4L2_FIELD_NONE;
 944         else
 945                 f->fmt.pix.field = dev->interlaced ?
 946                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 947         return 0;
 948 }
 949
 950 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
 951 {
 952         unsigned int i;
 953
 954         for (i = 0; i < ARRAY_SIZE(format); i++)
 955                 if (format[i].fourcc == fourcc)
 956                         return &format[i];
 957
 958         return NULL;
 959 }
 960
 961 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 962                         struct v4l2_format *f)
 963 {
 964         struct em28xx_fh      *fh    = priv;
 965         struct em28xx         *dev   = fh->dev;
 966         unsigned int          width  = f->fmt.pix.width;
 967         unsigned int          height = f->fmt.pix.height;
 968         unsigned int          maxw   = norm_maxw(dev);
 969         unsigned int          maxh   = norm_maxh(dev);
 970         unsigned int          hscale, vscale;
 971         struct em28xx_fmt     *fmt;
 972
 973         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 974         if (!fmt) {
 975                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
 976                                 f->fmt.pix.pixelformat);
 977                 return -EINVAL;
 978         }
 979
 980         if (dev->board.is_em2800) {
 981                 /* the em2800 can only scale down to 50% */
 982                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
 983                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
 984                 /*
 985                  * MaxPacketSize for em2800 is too small to capture at full
 986                  * resolution use half of maxw as the scaler can only scale
 987                  * to 50%
 988                  */
 989                 if (width == maxw && height == maxh)
 990                         width /= 2;
 991         } else {
 992                 /* width must even because of the YUYV format
 993                    height must be even because of interlacing */
 994                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
 995                                       1, 0);
 996         }
 997
 998         size_to_scale(dev, width, height, &hscale, &vscale);
 999         scale_to_size(dev, hscale, vscale, &width, &height);
1000
1001         f->fmt.pix.width = width;
1002         f->fmt.pix.height = height;
1003         f->fmt.pix.pixelformat = fmt->fourcc;
1004         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
1005         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1006         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1007         if (dev->progressive)
1008                 f->fmt.pix.field = V4L2_FIELD_NONE;
1009         else
1010                 f->fmt.pix.field = dev->interlaced ?
1011                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1012         f->fmt.pix.priv = 0;
1013
1014         return 0;
1015 }
1016
1017 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1018                                    unsigned width, unsigned height)
1019 {
1020         struct em28xx_fmt     *fmt;
1021
1022         fmt = format_by_fourcc(fourcc);
1023         if (!fmt)
1024                 return -EINVAL;
1025
1026         dev->format = fmt;
1027         dev->width  = width;
1028         dev->height = height;
1029
1030         /* set new image size */
1031         size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1032
1033         em28xx_resolution_set(dev);
1034
1035         return 0;
1036 }
1037
1038 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1039                         struct v4l2_format *f)
1040 {
1041         struct em28xx *dev = video_drvdata(file);
1042
1043         if (dev->streaming_users > 0)
1044                 return -EBUSY;
1045
1046         vidioc_try_fmt_vid_cap(file, priv, f);
1047
1048         return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1049                                 f->fmt.pix.width, f->fmt.pix.height);
1050 }
1051
1052 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1053 {
1054         struct em28xx_fh   *fh  = priv;
1055         struct em28xx      *dev = fh->dev;
1056
1057         *norm = dev->norm;
1058
1059         return 0;
1060 }
1061
1062 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
1063 {
1064         struct em28xx_fh   *fh  = priv;
1065         struct em28xx      *dev = fh->dev;
1066
1067         v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm);
1068
1069         return 0;
1070 }
1071
1072 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1073 {
1074         struct em28xx_fh   *fh  = priv;
1075         struct em28xx      *dev = fh->dev;
1076         struct v4l2_format f;
1077
1078         if (norm == dev->norm)
1079                 return 0;
1080
1081         if (dev->streaming_users > 0)
1082                 return -EBUSY;
1083
1084         dev->norm = norm;
1085
1086         /* Adjusts width/height, if needed */
1087         f.fmt.pix.width = 720;
1088         f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576;
1089         vidioc_try_fmt_vid_cap(file, priv, &f);
1090
1091         /* set new image size */
1092         dev->width = f.fmt.pix.width;
1093         dev->height = f.fmt.pix.height;
1094         size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1095
1096         em28xx_resolution_set(dev);
1097         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1098
1099         return 0;
1100 }
1101
1102 static int vidioc_g_parm(struct file *file, void *priv,
1103                          struct v4l2_streamparm *p)
1104 {
1105         struct em28xx_fh   *fh  = priv;
1106         struct em28xx      *dev = fh->dev;
1107         int rc = 0;
1108
1109         p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1110         if (dev->board.is_webcam)
1111                 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1112                                                 video, g_parm, p);
1113         else
1114                 v4l2_video_std_frame_period(dev->norm,
1115                                                  &p->parm.capture.timeperframe);
1116
1117         return rc;
1118 }
1119
1120 static int vidioc_s_parm(struct file *file, void *priv,
1121                          struct v4l2_streamparm *p)
1122 {
1123         struct em28xx_fh   *fh  = priv;
1124         struct em28xx      *dev = fh->dev;
1125
1126         p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1127         return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1128 }
1129
1130 static const char *iname[] = {
1131         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1132         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1133         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1134         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1135         [EM28XX_VMUX_SVIDEO]     = "S-Video",
1136         [EM28XX_VMUX_TELEVISION] = "Television",
1137         [EM28XX_VMUX_CABLE]      = "Cable TV",
1138         [EM28XX_VMUX_DVB]        = "DVB",
1139         [EM28XX_VMUX_DEBUG]      = "for debug only",
1140 };
1141
1142 static int vidioc_enum_input(struct file *file, void *priv,
1143                                 struct v4l2_input *i)
1144 {
1145         struct em28xx_fh   *fh  = priv;
1146         struct em28xx      *dev = fh->dev;
1147         unsigned int       n;
1148
1149         n = i->index;
1150         if (n >= MAX_EM28XX_INPUT)
1151                 return -EINVAL;
1152         if (0 == INPUT(n)->type)
1153                 return -EINVAL;
1154
1155         i->index = n;
1156         i->type = V4L2_INPUT_TYPE_CAMERA;
1157
1158         strcpy(i->name, iname[INPUT(n)->type]);
1159
1160         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1161                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1162                 i->type = V4L2_INPUT_TYPE_TUNER;
1163
1164         i->std = dev->vdev->tvnorms;
1165         /* webcams do not have the STD API */
1166         if (dev->board.is_webcam)
1167                 i->capabilities = 0;
1168
1169         return 0;
1170 }
1171
1172 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1173 {
1174         struct em28xx_fh   *fh  = priv;
1175         struct em28xx      *dev = fh->dev;
1176
1177         *i = dev->ctl_input;
1178
1179         return 0;
1180 }
1181
1182 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1183 {
1184         struct em28xx_fh   *fh  = priv;
1185         struct em28xx      *dev = fh->dev;
1186
1187         if (i >= MAX_EM28XX_INPUT)
1188                 return -EINVAL;
1189         if (0 == INPUT(i)->type)
1190                 return -EINVAL;
1191
1192         video_mux(dev, i);
1193         return 0;
1194 }
1195
1196 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1197 {
1198         struct em28xx_fh   *fh    = priv;
1199         struct em28xx      *dev   = fh->dev;
1200
1201         switch (a->index) {
1202         case EM28XX_AMUX_VIDEO:
1203                 strcpy(a->name, "Television");
1204                 break;
1205         case EM28XX_AMUX_LINE_IN:
1206                 strcpy(a->name, "Line In");
1207                 break;
1208         case EM28XX_AMUX_VIDEO2:
1209                 strcpy(a->name, "Television alt");
1210                 break;
1211         case EM28XX_AMUX_PHONE:
1212                 strcpy(a->name, "Phone");
1213                 break;
1214         case EM28XX_AMUX_MIC:
1215                 strcpy(a->name, "Mic");
1216                 break;
1217         case EM28XX_AMUX_CD:
1218                 strcpy(a->name, "CD");
1219                 break;
1220         case EM28XX_AMUX_AUX:
1221                 strcpy(a->name, "Aux");
1222                 break;
1223         case EM28XX_AMUX_PCM_OUT:
1224                 strcpy(a->name, "PCM");
1225                 break;
1226         default:
1227                 return -EINVAL;
1228         }
1229
1230         a->index = dev->ctl_ainput;
1231         a->capability = V4L2_AUDCAP_STEREO;
1232
1233         return 0;
1234 }
1235
1236 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1237 {
1238         struct em28xx_fh   *fh  = priv;
1239         struct em28xx      *dev = fh->dev;
1240
1241         if (a->index >= MAX_EM28XX_INPUT)
1242                 return -EINVAL;
1243         if (0 == INPUT(a->index)->type)
1244                 return -EINVAL;
1245
1246         dev->ctl_ainput = INPUT(a->index)->amux;
1247         dev->ctl_aoutput = INPUT(a->index)->aout;
1248
1249         if (!dev->ctl_aoutput)
1250                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1251
1252         return 0;
1253 }
1254
1255 static int vidioc_g_tuner(struct file *file, void *priv,
1256                                 struct v4l2_tuner *t)
1257 {
1258         struct em28xx_fh      *fh  = priv;
1259         struct em28xx         *dev = fh->dev;
1260
1261         if (0 != t->index)
1262                 return -EINVAL;
1263
1264         strcpy(t->name, "Tuner");
1265
1266         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1267         return 0;
1268 }
1269
1270 static int vidioc_s_tuner(struct file *file, void *priv,
1271                                 const struct v4l2_tuner *t)
1272 {
1273         struct em28xx_fh      *fh  = priv;
1274         struct em28xx         *dev = fh->dev;
1275
1276         if (0 != t->index)
1277                 return -EINVAL;
1278
1279         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1280         return 0;
1281 }
1282
1283 static int vidioc_g_frequency(struct file *file, void *priv,
1284                                 struct v4l2_frequency *f)
1285 {
1286         struct em28xx_fh      *fh  = priv;
1287         struct em28xx         *dev = fh->dev;
1288
1289         if (0 != f->tuner)
1290                 return -EINVAL;
1291
1292         f->frequency = dev->ctl_freq;
1293         return 0;
1294 }
1295
1296 static int vidioc_s_frequency(struct file *file, void *priv,
1297                                 const struct v4l2_frequency *f)
1298 {
1299         struct v4l2_frequency new_freq = *f;
1300         struct em28xx_fh      *fh  = priv;
1301         struct em28xx         *dev = fh->dev;
1302
1303         if (0 != f->tuner)
1304                 return -EINVAL;
1305
1306         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1307         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1308         dev->ctl_freq = new_freq.frequency;
1309
1310         return 0;
1311 }
1312
1313 #ifdef CONFIG_VIDEO_ADV_DEBUG
1314 static int vidioc_g_chip_info(struct file *file, void *priv,
1315                struct v4l2_dbg_chip_info *chip)
1316 {
1317         struct em28xx_fh      *fh  = priv;
1318         struct em28xx         *dev = fh->dev;
1319
1320         if (chip->match.addr > 1)
1321                 return -EINVAL;
1322         if (chip->match.addr == 1)
1323                 strlcpy(chip->name, "ac97", sizeof(chip->name));
1324         else
1325                 strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name));
1326         return 0;
1327 }
1328
1329 static int em28xx_reg_len(int reg)
1330 {
1331         switch (reg) {
1332         case EM28XX_R40_AC97LSB:
1333         case EM28XX_R30_HSCALELOW:
1334         case EM28XX_R32_VSCALELOW:
1335                 return 2;
1336         default:
1337                 return 1;
1338         }
1339 }
1340
1341 static int vidioc_g_register(struct file *file, void *priv,
1342                              struct v4l2_dbg_register *reg)
1343 {
1344         struct em28xx_fh      *fh  = priv;
1345         struct em28xx         *dev = fh->dev;
1346         int ret;
1347
1348         if (reg->match.addr > 1)
1349                 return -EINVAL;
1350         if (reg->match.addr) {
1351                 ret = em28xx_read_ac97(dev, reg->reg);
1352                 if (ret < 0)
1353                         return ret;
1354
1355                 reg->val = ret;
1356                 reg->size = 1;
1357                 return 0;
1358         }
1359
1360         /* Match host */
1361         reg->size = em28xx_reg_len(reg->reg);
1362         if (reg->size == 1) {
1363                 ret = em28xx_read_reg(dev, reg->reg);
1364
1365                 if (ret < 0)
1366                         return ret;
1367
1368                 reg->val = ret;
1369         } else {
1370                 __le16 val = 0;
1371                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1372                                                    reg->reg, (char *)&val, 2);
1373                 if (ret < 0)
1374                         return ret;
1375
1376                 reg->val = le16_to_cpu(val);
1377         }
1378
1379         return 0;
1380 }
1381
1382 static int vidioc_s_register(struct file *file, void *priv,
1383                              const struct v4l2_dbg_register *reg)
1384 {
1385         struct em28xx_fh      *fh  = priv;
1386         struct em28xx         *dev = fh->dev;
1387         __le16 buf;
1388
1389         if (reg->match.addr > 1)
1390                 return -EINVAL;
1391         if (reg->match.addr)
1392                 return em28xx_write_ac97(dev, reg->reg, reg->val);
1393
1394         /* Match host */
1395         buf = cpu_to_le16(reg->val);
1396
1397         return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1398                                em28xx_reg_len(reg->reg));
1399 }
1400 #endif
1401
1402
1403 static int vidioc_querycap(struct file *file, void  *priv,
1404                                         struct v4l2_capability *cap)
1405 {
1406         struct video_device *vdev = video_devdata(file);
1407         struct em28xx_fh      *fh  = priv;
1408         struct em28xx         *dev = fh->dev;
1409
1410         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1411         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1412         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1413
1414         if (vdev->vfl_type == VFL_TYPE_GRABBER)
1415                 cap->device_caps = V4L2_CAP_READWRITE |
1416                         V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1417         else if (vdev->vfl_type == VFL_TYPE_RADIO)
1418                 cap->device_caps = V4L2_CAP_RADIO;
1419         else
1420                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
1421
1422         if (dev->audio_mode.has_audio)
1423                 cap->device_caps |= V4L2_CAP_AUDIO;
1424
1425         if (dev->tuner_type != TUNER_ABSENT)
1426                 cap->device_caps |= V4L2_CAP_TUNER;
1427
1428         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1429                 V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1430         if (dev->vbi_dev)
1431                 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1432         if (dev->radio_dev)
1433                 cap->capabilities |= V4L2_CAP_RADIO;
1434         return 0;
1435 }
1436
1437 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1438                                         struct v4l2_fmtdesc *f)
1439 {
1440         if (unlikely(f->index >= ARRAY_SIZE(format)))
1441                 return -EINVAL;
1442
1443         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1444         f->pixelformat = format[f->index].fourcc;
1445
1446         return 0;
1447 }
1448
1449 static int vidioc_enum_framesizes(struct file *file, void *priv,
1450                                   struct v4l2_frmsizeenum *fsize)
1451 {
1452         struct em28xx_fh      *fh  = priv;
1453         struct em28xx         *dev = fh->dev;
1454         struct em28xx_fmt     *fmt;
1455         unsigned int          maxw = norm_maxw(dev);
1456         unsigned int          maxh = norm_maxh(dev);
1457
1458         fmt = format_by_fourcc(fsize->pixel_format);
1459         if (!fmt) {
1460                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1461                                 fsize->pixel_format);
1462                 return -EINVAL;
1463         }
1464
1465         if (dev->board.is_em2800) {
1466                 if (fsize->index > 1)
1467                         return -EINVAL;
1468                 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1469                 fsize->discrete.width = maxw / (1 + fsize->index);
1470                 fsize->discrete.height = maxh / (1 + fsize->index);
1471                 return 0;
1472         }
1473
1474         if (fsize->index != 0)
1475                 return -EINVAL;
1476
1477         /* Report a continuous range */
1478         fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1479         scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX,
1480                       &fsize->stepwise.min_width, &fsize->stepwise.min_height);
1481         if (fsize->stepwise.min_width < 48)
1482                 fsize->stepwise.min_width = 48;
1483         if (fsize->stepwise.min_height < 38)
1484                 fsize->stepwise.min_height = 38;
1485         fsize->stepwise.max_width = maxw;
1486         fsize->stepwise.max_height = maxh;
1487         fsize->stepwise.step_width = 1;
1488         fsize->stepwise.step_height = 1;
1489         return 0;
1490 }
1491
1492 /* RAW VBI ioctls */
1493
1494 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1495                                 struct v4l2_format *format)
1496 {
1497         struct em28xx_fh      *fh  = priv;
1498         struct em28xx         *dev = fh->dev;
1499
1500         format->fmt.vbi.samples_per_line = dev->vbi_width;
1501         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1502         format->fmt.vbi.offset = 0;
1503         format->fmt.vbi.flags = 0;
1504         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1505         format->fmt.vbi.count[0] = dev->vbi_height;
1506         format->fmt.vbi.count[1] = dev->vbi_height;
1507         memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1508
1509         /* Varies by video standard (NTSC, PAL, etc.) */
1510         if (dev->norm & V4L2_STD_525_60) {
1511                 /* NTSC */
1512                 format->fmt.vbi.start[0] = 10;
1513                 format->fmt.vbi.start[1] = 273;
1514         } else if (dev->norm & V4L2_STD_625_50) {
1515                 /* PAL */
1516                 format->fmt.vbi.start[0] = 6;
1517                 format->fmt.vbi.start[1] = 318;
1518         }
1519
1520         return 0;
1521 }
1522
1523 /* ----------------------------------------------------------- */
1524 /* RADIO ESPECIFIC IOCTLS                                      */
1525 /* ----------------------------------------------------------- */
1526
1527 static int radio_g_tuner(struct file *file, void *priv,
1528                          struct v4l2_tuner *t)
1529 {
1530         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1531
1532         if (unlikely(t->index > 0))
1533                 return -EINVAL;
1534
1535         strcpy(t->name, "Radio");
1536
1537         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1538
1539         return 0;
1540 }
1541
1542 static int radio_s_tuner(struct file *file, void *priv,
1543                          const struct v4l2_tuner *t)
1544 {
1545         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1546
1547         if (0 != t->index)
1548                 return -EINVAL;
1549
1550         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1551
1552         return 0;
1553 }
1554
1555 /*
1556  * em28xx_v4l2_open()
1557  * inits the device and starts isoc transfer
1558  */
1559 static int em28xx_v4l2_open(struct file *filp)
1560 {
1561         struct video_device *vdev = video_devdata(filp);
1562         struct em28xx *dev = video_drvdata(filp);
1563         enum v4l2_buf_type fh_type = 0;
1564         struct em28xx_fh *fh;
1565
1566         switch (vdev->vfl_type) {
1567         case VFL_TYPE_GRABBER:
1568                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1569                 break;
1570         case VFL_TYPE_VBI:
1571                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1572                 break;
1573         }
1574
1575         em28xx_videodbg("open dev=%s type=%s users=%d\n",
1576                         video_device_node_name(vdev), v4l2_type_names[fh_type],
1577                         dev->users);
1578
1579
1580         if (mutex_lock_interruptible(&dev->lock))
1581                 return -ERESTARTSYS;
1582         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1583         if (!fh) {
1584                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1585                 mutex_unlock(&dev->lock);
1586                 return -ENOMEM;
1587         }
1588         v4l2_fh_init(&fh->fh, vdev);
1589         fh->dev = dev;
1590         fh->type = fh_type;
1591         filp->private_data = fh;
1592
1593         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1594                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1595                 em28xx_resolution_set(dev);
1596
1597                 /* Needed, since GPIO might have disabled power of
1598                    some i2c device
1599                  */
1600                 em28xx_wake_i2c(dev);
1601
1602         }
1603
1604         if (vdev->vfl_type == VFL_TYPE_RADIO) {
1605                 em28xx_videodbg("video_open: setting radio device\n");
1606                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1607         }
1608
1609         dev->users++;
1610
1611         mutex_unlock(&dev->lock);
1612         v4l2_fh_add(&fh->fh);
1613
1614         return 0;
1615 }
1616
1617 /*
1618  * em28xx_realease_resources()
1619  * unregisters the v4l2,i2c and usb devices
1620  * called when the device gets disconected or at module unload
1621 */
1622 void em28xx_release_analog_resources(struct em28xx *dev)
1623 {
1624
1625         /*FIXME: I2C IR should be disconnected */
1626
1627         if (dev->radio_dev) {
1628                 if (video_is_registered(dev->radio_dev))
1629                         video_unregister_device(dev->radio_dev);
1630                 else
1631                         video_device_release(dev->radio_dev);
1632                 dev->radio_dev = NULL;
1633         }
1634         if (dev->vbi_dev) {
1635                 em28xx_info("V4L2 device %s deregistered\n",
1636                             video_device_node_name(dev->vbi_dev));
1637                 if (video_is_registered(dev->vbi_dev))
1638                         video_unregister_device(dev->vbi_dev);
1639                 else
1640                         video_device_release(dev->vbi_dev);
1641                 dev->vbi_dev = NULL;
1642         }
1643         if (dev->vdev) {
1644                 em28xx_info("V4L2 device %s deregistered\n",
1645                             video_device_node_name(dev->vdev));
1646                 if (video_is_registered(dev->vdev))
1647                         video_unregister_device(dev->vdev);
1648                 else
1649                         video_device_release(dev->vdev);
1650                 dev->vdev = NULL;
1651         }
1652 }
1653
1654 /*
1655  * em28xx_v4l2_close()
1656  * stops streaming and deallocates all resources allocated by the v4l2
1657  * calls and ioctls
1658  */
1659 static int em28xx_v4l2_close(struct file *filp)
1660 {
1661         struct em28xx_fh *fh  = filp->private_data;
1662         struct em28xx    *dev = fh->dev;
1663         int              errCode;
1664
1665         em28xx_videodbg("users=%d\n", dev->users);
1666
1667         vb2_fop_release(filp);
1668         mutex_lock(&dev->lock);
1669
1670         if (dev->users == 1) {
1671                 /* the device is already disconnect,
1672                    free the remaining resources */
1673                 if (dev->disconnected) {
1674                         em28xx_release_resources(dev);
1675                         kfree(dev->alt_max_pkt_size_isoc);
1676                         mutex_unlock(&dev->lock);
1677                         kfree(dev);
1678                         return 0;
1679                 }
1680
1681                 /* Save some power by putting tuner to sleep */
1682                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
1683
1684                 /* do this before setting alternate! */
1685                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1686
1687                 /* set alternate 0 */
1688                 dev->alt = 0;
1689                 em28xx_videodbg("setting alternate 0\n");
1690                 errCode = usb_set_interface(dev->udev, 0, 0);
1691                 if (errCode < 0) {
1692                         em28xx_errdev("cannot change alternate number to "
1693                                         "0 (error=%i)\n", errCode);
1694                 }
1695         }
1696
1697         dev->users--;
1698         mutex_unlock(&dev->lock);
1699         return 0;
1700 }
1701
1702 static const struct v4l2_file_operations em28xx_v4l_fops = {
1703         .owner         = THIS_MODULE,
1704         .open          = em28xx_v4l2_open,
1705         .release       = em28xx_v4l2_close,
1706         .read          = vb2_fop_read,
1707         .poll          = vb2_fop_poll,
1708         .mmap          = vb2_fop_mmap,
1709         .unlocked_ioctl = video_ioctl2,
1710 };
1711
1712 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1713         .vidioc_querycap            = vidioc_querycap,
1714         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1715         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1716         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1717         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1718         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1719         .vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
1720         .vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1721         .vidioc_enum_framesizes     = vidioc_enum_framesizes,
1722         .vidioc_g_audio             = vidioc_g_audio,
1723         .vidioc_s_audio             = vidioc_s_audio,
1724
1725         .vidioc_reqbufs             = vb2_ioctl_reqbufs,
1726         .vidioc_create_bufs         = vb2_ioctl_create_bufs,
1727         .vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
1728         .vidioc_querybuf            = vb2_ioctl_querybuf,
1729         .vidioc_qbuf                = vb2_ioctl_qbuf,
1730         .vidioc_dqbuf               = vb2_ioctl_dqbuf,
1731
1732         .vidioc_g_std               = vidioc_g_std,
1733         .vidioc_querystd            = vidioc_querystd,
1734         .vidioc_s_std               = vidioc_s_std,
1735         .vidioc_g_parm              = vidioc_g_parm,
1736         .vidioc_s_parm              = vidioc_s_parm,
1737         .vidioc_enum_input          = vidioc_enum_input,
1738         .vidioc_g_input             = vidioc_g_input,
1739         .vidioc_s_input             = vidioc_s_input,
1740         .vidioc_streamon            = vb2_ioctl_streamon,
1741         .vidioc_streamoff           = vb2_ioctl_streamoff,
1742         .vidioc_g_tuner             = vidioc_g_tuner,
1743         .vidioc_s_tuner             = vidioc_s_tuner,
1744         .vidioc_g_frequency         = vidioc_g_frequency,
1745         .vidioc_s_frequency         = vidioc_s_frequency,
1746         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1747         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1748 #ifdef CONFIG_VIDEO_ADV_DEBUG
1749         .vidioc_g_chip_info         = vidioc_g_chip_info,
1750         .vidioc_g_register          = vidioc_g_register,
1751         .vidioc_s_register          = vidioc_s_register,
1752 #endif
1753 };
1754
1755 static const struct video_device em28xx_video_template = {
1756         .fops                       = &em28xx_v4l_fops,
1757         .release                    = video_device_release_empty,
1758         .ioctl_ops                  = &video_ioctl_ops,
1759
1760         .tvnorms                    = V4L2_STD_ALL,
1761 };
1762
1763 static const struct v4l2_file_operations radio_fops = {
1764         .owner         = THIS_MODULE,
1765         .open          = em28xx_v4l2_open,
1766         .release       = em28xx_v4l2_close,
1767         .unlocked_ioctl = video_ioctl2,
1768 };
1769
1770 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1771         .vidioc_querycap      = vidioc_querycap,
1772         .vidioc_g_tuner       = radio_g_tuner,
1773         .vidioc_s_tuner       = radio_s_tuner,
1774         .vidioc_g_frequency   = vidioc_g_frequency,
1775         .vidioc_s_frequency   = vidioc_s_frequency,
1776         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1777         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1778 #ifdef CONFIG_VIDEO_ADV_DEBUG
1779         .vidioc_g_chip_info   = vidioc_g_chip_info,
1780         .vidioc_g_register    = vidioc_g_register,
1781         .vidioc_s_register    = vidioc_s_register,
1782 #endif
1783 };
1784
1785 static struct video_device em28xx_radio_template = {
1786         .name                 = "em28xx-radio",
1787         .fops                 = &radio_fops,
1788         .ioctl_ops            = &radio_ioctl_ops,
1789 };
1790
1791 /******************************** usb interface ******************************/
1792
1793
1794
1795 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1796                                         const struct video_device *template,
1797                                         const char *type_name)
1798 {
1799         struct video_device *vfd;
1800
1801         vfd = video_device_alloc();
1802         if (NULL == vfd)
1803                 return NULL;
1804
1805         *vfd            = *template;
1806         vfd->v4l2_dev   = &dev->v4l2_dev;
1807         vfd->debug      = video_debug;
1808         vfd->lock       = &dev->lock;
1809         set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1810         if (dev->board.is_webcam)
1811                 vfd->tvnorms = 0;
1812
1813         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1814                  dev->name, type_name);
1815
1816         video_set_drvdata(vfd, dev);
1817         return vfd;
1818 }
1819
1820 int em28xx_register_analog_devices(struct em28xx *dev)
1821 {
1822         u8 val;
1823         int ret;
1824         unsigned int maxw;
1825
1826         printk(KERN_INFO "%s: v4l2 driver version %s\n",
1827                 dev->name, EM28XX_VERSION);
1828
1829         /* set default norm */
1830         dev->norm = V4L2_STD_PAL;
1831         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1832         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1833
1834         /* Analog specific initialization */
1835         dev->format = &format[0];
1836
1837         maxw = norm_maxw(dev);
1838         /* MaxPacketSize for em2800 is too small to capture at full resolution
1839          * use half of maxw as the scaler can only scale to 50% */
1840         if (dev->board.is_em2800)
1841                 maxw /= 2;
1842
1843         em28xx_set_video_format(dev, format[0].fourcc,
1844                                 maxw, norm_maxh(dev));
1845
1846         video_mux(dev, 0);
1847
1848         /* Audio defaults */
1849         dev->mute = 1;
1850         dev->volume = 0x1f;
1851
1852 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
1853         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
1854         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
1855                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
1856
1857         em28xx_set_outfmt(dev);
1858         em28xx_compression_disable(dev);
1859
1860         /* Add image controls */
1861         /* NOTE: at this point, the subdevices are already registered, so bridge
1862          * controls are only added/enabled when no subdevice provides them */
1863         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_CONTRAST))
1864                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1865                                   V4L2_CID_CONTRAST,
1866                                   0, 0x1f, 1, CONTRAST_DEFAULT);
1867         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BRIGHTNESS))
1868                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1869                                   V4L2_CID_BRIGHTNESS,
1870                                   -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT);
1871         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SATURATION))
1872                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1873                                   V4L2_CID_SATURATION,
1874                                   0, 0x1f, 1, SATURATION_DEFAULT);
1875         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BLUE_BALANCE))
1876                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1877                                   V4L2_CID_BLUE_BALANCE,
1878                                   -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT);
1879         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_RED_BALANCE))
1880                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1881                                   V4L2_CID_RED_BALANCE,
1882                                   -0x30, 0x30, 1, RED_BALANCE_DEFAULT);
1883         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SHARPNESS))
1884                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1885                                   V4L2_CID_SHARPNESS,
1886                                   0, 0x0f, 1, SHARPNESS_DEFAULT);
1887
1888         /* Reset image controls */
1889         em28xx_colorlevels_set_default(dev);
1890         v4l2_ctrl_handler_setup(&dev->ctrl_handler);
1891         if (dev->ctrl_handler.error)
1892                 return dev->ctrl_handler.error;
1893
1894         /* allocate and fill video video_device struct */
1895         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
1896         if (!dev->vdev) {
1897                 em28xx_errdev("cannot allocate video_device.\n");
1898                 return -ENODEV;
1899         }
1900         dev->vdev->queue = &dev->vb_vidq;
1901         dev->vdev->queue->lock = &dev->vb_queue_lock;
1902
1903         /* disable inapplicable ioctls */
1904         if (dev->board.is_webcam) {
1905                 v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD);
1906                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD);
1907                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD);
1908         } else {
1909                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1910         }
1911         if (dev->tuner_type == TUNER_ABSENT) {
1912                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_TUNER);
1913                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_TUNER);
1914                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_FREQUENCY);
1915                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_FREQUENCY);
1916         }
1917         if (!dev->audio_mode.has_audio) {
1918                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_AUDIO);
1919                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_AUDIO);
1920         }
1921
1922         /* register v4l2 video video_device */
1923         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
1924                                        video_nr[dev->devno]);
1925         if (ret) {
1926                 em28xx_errdev("unable to register video device (error=%i).\n",
1927                               ret);
1928                 return ret;
1929         }
1930
1931         /* Allocate and fill vbi video_device struct */
1932         if (em28xx_vbi_supported(dev) == 1) {
1933                 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
1934                                                 "vbi");
1935
1936                 dev->vbi_dev->queue = &dev->vb_vbiq;
1937                 dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
1938
1939                 /* disable inapplicable ioctls */
1940                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1941                 if (dev->tuner_type == TUNER_ABSENT) {
1942                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER);
1943                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER);
1944                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_FREQUENCY);
1945                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_FREQUENCY);
1946                 }
1947                 if (!dev->audio_mode.has_audio) {
1948                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_AUDIO);
1949                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_AUDIO);
1950                 }
1951
1952                 /* register v4l2 vbi video_device */
1953                 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
1954                                             vbi_nr[dev->devno]);
1955                 if (ret < 0) {
1956                         em28xx_errdev("unable to register vbi device\n");
1957                         return ret;
1958                 }
1959         }
1960
1961         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
1962                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
1963                                                   "radio");
1964                 if (!dev->radio_dev) {
1965                         em28xx_errdev("cannot allocate video_device.\n");
1966                         return -ENODEV;
1967                 }
1968                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1969                                             radio_nr[dev->devno]);
1970                 if (ret < 0) {
1971                         em28xx_errdev("can't register radio device\n");
1972                         return ret;
1973                 }
1974                 em28xx_info("Registered radio device as %s\n",
1975                             video_device_node_name(dev->radio_dev));
1976         }
1977
1978         em28xx_info("V4L2 video device registered as %s\n",
1979                     video_device_node_name(dev->vdev));
1980
1981         if (dev->vbi_dev)
1982                 em28xx_info("V4L2 VBI device registered as %s\n",
1983                             video_device_node_name(dev->vbi_dev));
1984
1985         return 0;
1986 }