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                         goto fail;
 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 fail:
 679         return rc;
 680 }
 681
 682 static int em28xx_stop_streaming(struct vb2_queue *vq)
 683 {
 684         struct em28xx *dev = vb2_get_drv_priv(vq);
 685         struct em28xx_dmaqueue *vidq = &dev->vidq;
 686         unsigned long flags = 0;
 687
 688         em28xx_videodbg("%s\n", __func__);
 689
 690         res_free(dev, vq->type);
 691
 692         if (dev->streaming_users-- == 1) {
 693                 /* Last active user, so shutdown all the URBS */
 694                 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
 695         }
 696
 697         spin_lock_irqsave(&dev->slock, flags);
 698         while (!list_empty(&vidq->active)) {
 699                 struct em28xx_buffer *buf;
 700                 buf = list_entry(vidq->active.next, struct em28xx_buffer, list);
 701                 list_del(&buf->list);
 702                 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
 703         }
 704         dev->usb_ctl.vid_buf = NULL;
 705         spin_unlock_irqrestore(&dev->slock, flags);
 706
 707         return 0;
 708 }
 709
 710 int em28xx_stop_vbi_streaming(struct vb2_queue *vq)
 711 {
 712         struct em28xx *dev = vb2_get_drv_priv(vq);
 713         struct em28xx_dmaqueue *vbiq = &dev->vbiq;
 714         unsigned long flags = 0;
 715
 716         em28xx_videodbg("%s\n", __func__);
 717
 718         res_free(dev, vq->type);
 719
 720         if (dev->streaming_users-- == 1) {
 721                 /* Last active user, so shutdown all the URBS */
 722                 em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
 723         }
 724
 725         spin_lock_irqsave(&dev->slock, flags);
 726         while (!list_empty(&vbiq->active)) {
 727                 struct em28xx_buffer *buf;
 728                 buf = list_entry(vbiq->active.next, struct em28xx_buffer, list);
 729                 list_del(&buf->list);
 730                 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
 731         }
 732         dev->usb_ctl.vbi_buf = NULL;
 733         spin_unlock_irqrestore(&dev->slock, flags);
 734
 735         return 0;
 736 }
 737
 738 static void
 739 buffer_queue(struct vb2_buffer *vb)
 740 {
 741         struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
 742         struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
 743         struct em28xx_dmaqueue *vidq = &dev->vidq;
 744         unsigned long flags = 0;
 745
 746         em28xx_videodbg("%s\n", __func__);
 747         buf->mem = vb2_plane_vaddr(vb, 0);
 748         buf->length = vb2_plane_size(vb, 0);
 749
 750         spin_lock_irqsave(&dev->slock, flags);
 751         list_add_tail(&buf->list, &vidq->active);
 752         spin_unlock_irqrestore(&dev->slock, flags);
 753 }
 754
 755 static struct vb2_ops em28xx_video_qops = {
 756         .queue_setup    = queue_setup,
 757         .buf_prepare    = buffer_prepare,
 758         .buf_queue      = buffer_queue,
 759         .start_streaming = em28xx_start_analog_streaming,
 760         .stop_streaming = em28xx_stop_streaming,
 761         .wait_prepare   = vb2_ops_wait_prepare,
 762         .wait_finish    = vb2_ops_wait_finish,
 763 };
 764
 765 int em28xx_vb2_setup(struct em28xx *dev)
 766 {
 767         int rc;
 768         struct vb2_queue *q;
 769
 770         /* Setup Videobuf2 for Video capture */
 771         q = &dev->vb_vidq;
 772         q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 773         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
 774         q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 775         q->drv_priv = dev;
 776         q->buf_struct_size = sizeof(struct em28xx_buffer);
 777         q->ops = &em28xx_video_qops;
 778         q->mem_ops = &vb2_vmalloc_memops;
 779
 780         rc = vb2_queue_init(q);
 781         if (rc < 0)
 782                 return rc;
 783
 784         /* Setup Videobuf2 for VBI capture */
 785         q = &dev->vb_vbiq;
 786         q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 787         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
 788         q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 789         q->drv_priv = dev;
 790         q->buf_struct_size = sizeof(struct em28xx_buffer);
 791         q->ops = &em28xx_vbi_qops;
 792         q->mem_ops = &vb2_vmalloc_memops;
 793
 794         rc = vb2_queue_init(q);
 795         if (rc < 0)
 796                 return rc;
 797
 798         return 0;
 799 }
 800
 801 /*********************  v4l2 interface  **************************************/
 802
 803 static void video_mux(struct em28xx *dev, int index)
 804 {
 805         dev->ctl_input = index;
 806         dev->ctl_ainput = INPUT(index)->amux;
 807         dev->ctl_aoutput = INPUT(index)->aout;
 808
 809         if (!dev->ctl_aoutput)
 810                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
 811
 812         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
 813                         INPUT(index)->vmux, 0, 0);
 814
 815         if (dev->board.has_msp34xx) {
 816                 if (dev->i2s_speed) {
 817                         v4l2_device_call_all(&dev->v4l2_dev, 0, audio,
 818                                 s_i2s_clock_freq, dev->i2s_speed);
 819                 }
 820                 /* Note: this is msp3400 specific */
 821                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 822                          dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
 823         }
 824
 825         if (dev->board.adecoder != EM28XX_NOADECODER) {
 826                 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
 827                         dev->ctl_ainput, dev->ctl_aoutput, 0);
 828         }
 829
 830         em28xx_audio_analog_set(dev);
 831 }
 832
 833 void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
 834 {
 835         struct em28xx *dev = priv;
 836
 837         /*
 838          * In the case of non-AC97 volume controls, we still need
 839          * to do some setups at em28xx, in order to mute/unmute
 840          * and to adjust audio volume. However, the value ranges
 841          * should be checked by the corresponding V4L subdriver.
 842          */
 843         switch (ctrl->id) {
 844         case V4L2_CID_AUDIO_MUTE:
 845                 dev->mute = ctrl->val;
 846                 em28xx_audio_analog_set(dev);
 847                 break;
 848         case V4L2_CID_AUDIO_VOLUME:
 849                 dev->volume = ctrl->val;
 850                 em28xx_audio_analog_set(dev);
 851                 break;
 852         }
 853 }
 854
 855 static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl)
 856 {
 857         struct em28xx *dev = container_of(ctrl->handler, struct em28xx, ctrl_handler);
 858         int ret = -EINVAL;
 859
 860         switch (ctrl->id) {
 861         case V4L2_CID_AUDIO_MUTE:
 862                 dev->mute = ctrl->val;
 863                 ret = em28xx_audio_analog_set(dev);
 864                 break;
 865         case V4L2_CID_AUDIO_VOLUME:
 866                 dev->volume = ctrl->val;
 867                 ret = em28xx_audio_analog_set(dev);
 868                 break;
 869         case V4L2_CID_CONTRAST:
 870                 ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val);
 871                 break;
 872         case V4L2_CID_BRIGHTNESS:
 873                 ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val);
 874                 break;
 875         case V4L2_CID_SATURATION:
 876                 ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val);
 877                 break;
 878         case V4L2_CID_BLUE_BALANCE:
 879                 ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val);
 880                 break;
 881         case V4L2_CID_RED_BALANCE:
 882                 ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val);
 883                 break;
 884         case V4L2_CID_SHARPNESS:
 885                 ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val);
 886                 break;
 887         }
 888
 889         return (ret < 0) ? ret : 0;
 890 }
 891
 892 const struct v4l2_ctrl_ops em28xx_ctrl_ops = {
 893         .s_ctrl = em28xx_s_ctrl,
 894 };
 895
 896 static void size_to_scale(struct em28xx *dev,
 897                         unsigned int width, unsigned int height,
 898                         unsigned int *hscale, unsigned int *vscale)
 899 {
 900         unsigned int          maxw = norm_maxw(dev);
 901         unsigned int          maxh = norm_maxh(dev);
 902
 903         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 904         if (*hscale > EM28XX_HVSCALE_MAX)
 905                 *hscale = EM28XX_HVSCALE_MAX;
 906
 907         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 908         if (*vscale > EM28XX_HVSCALE_MAX)
 909                 *vscale = EM28XX_HVSCALE_MAX;
 910 }
 911
 912 static void scale_to_size(struct em28xx *dev,
 913                           unsigned int hscale, unsigned int vscale,
 914                           unsigned int *width, unsigned int *height)
 915 {
 916         unsigned int          maxw = norm_maxw(dev);
 917         unsigned int          maxh = norm_maxh(dev);
 918
 919         *width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 920         *height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 921 }
 922
 923 /* ------------------------------------------------------------------
 924         IOCTL vidioc handling
 925    ------------------------------------------------------------------*/
 926
 927 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 928                                         struct v4l2_format *f)
 929 {
 930         struct em28xx_fh      *fh  = priv;
 931         struct em28xx         *dev = fh->dev;
 932
 933         f->fmt.pix.width = dev->width;
 934         f->fmt.pix.height = dev->height;
 935         f->fmt.pix.pixelformat = dev->format->fourcc;
 936         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 937         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline  * dev->height;
 938         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 939
 940         /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
 941         if (dev->progressive)
 942                 f->fmt.pix.field = V4L2_FIELD_NONE;
 943         else
 944                 f->fmt.pix.field = dev->interlaced ?
 945                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
 946         return 0;
 947 }
 948
 949 static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc)
 950 {
 951         unsigned int i;
 952
 953         for (i = 0; i < ARRAY_SIZE(format); i++)
 954                 if (format[i].fourcc == fourcc)
 955                         return &format[i];
 956
 957         return NULL;
 958 }
 959
 960 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 961                         struct v4l2_format *f)
 962 {
 963         struct em28xx_fh      *fh    = priv;
 964         struct em28xx         *dev   = fh->dev;
 965         unsigned int          width  = f->fmt.pix.width;
 966         unsigned int          height = f->fmt.pix.height;
 967         unsigned int          maxw   = norm_maxw(dev);
 968         unsigned int          maxh   = norm_maxh(dev);
 969         unsigned int          hscale, vscale;
 970         struct em28xx_fmt     *fmt;
 971
 972         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 973         if (!fmt) {
 974                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
 975                                 f->fmt.pix.pixelformat);
 976                 return -EINVAL;
 977         }
 978
 979         if (dev->board.is_em2800) {
 980                 /* the em2800 can only scale down to 50% */
 981                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
 982                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
 983                 /*
 984                  * MaxPacketSize for em2800 is too small to capture at full
 985                  * resolution use half of maxw as the scaler can only scale
 986                  * to 50%
 987                  */
 988                 if (width == maxw && height == maxh)
 989                         width /= 2;
 990         } else {
 991                 /* width must even because of the YUYV format
 992                    height must be even because of interlacing */
 993                 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh,
 994                                       1, 0);
 995         }
 996
 997         size_to_scale(dev, width, height, &hscale, &vscale);
 998         scale_to_size(dev, hscale, vscale, &width, &height);
 999
1000         f->fmt.pix.width = width;
1001         f->fmt.pix.height = height;
1002         f->fmt.pix.pixelformat = fmt->fourcc;
1003         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
1004         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1005         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1006         if (dev->progressive)
1007                 f->fmt.pix.field = V4L2_FIELD_NONE;
1008         else
1009                 f->fmt.pix.field = dev->interlaced ?
1010                            V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP;
1011         f->fmt.pix.priv = 0;
1012
1013         return 0;
1014 }
1015
1016 static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
1017                                    unsigned width, unsigned height)
1018 {
1019         struct em28xx_fmt     *fmt;
1020
1021         fmt = format_by_fourcc(fourcc);
1022         if (!fmt)
1023                 return -EINVAL;
1024
1025         dev->format = fmt;
1026         dev->width  = width;
1027         dev->height = height;
1028
1029         /* set new image size */
1030         size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1031
1032         em28xx_resolution_set(dev);
1033
1034         return 0;
1035 }
1036
1037 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1038                         struct v4l2_format *f)
1039 {
1040         struct em28xx *dev = video_drvdata(file);
1041
1042         if (dev->streaming_users > 0)
1043                 return -EBUSY;
1044
1045         vidioc_try_fmt_vid_cap(file, priv, f);
1046
1047         return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
1048                                 f->fmt.pix.width, f->fmt.pix.height);
1049 }
1050
1051 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1052 {
1053         struct em28xx_fh   *fh  = priv;
1054         struct em28xx      *dev = fh->dev;
1055
1056         *norm = dev->norm;
1057
1058         return 0;
1059 }
1060
1061 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
1062 {
1063         struct em28xx_fh   *fh  = priv;
1064         struct em28xx      *dev = fh->dev;
1065
1066         v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm);
1067
1068         return 0;
1069 }
1070
1071 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1072 {
1073         struct em28xx_fh   *fh  = priv;
1074         struct em28xx      *dev = fh->dev;
1075         struct v4l2_format f;
1076
1077         if (norm == dev->norm)
1078                 return 0;
1079
1080         if (dev->streaming_users > 0)
1081                 return -EBUSY;
1082
1083         dev->norm = norm;
1084
1085         /* Adjusts width/height, if needed */
1086         f.fmt.pix.width = 720;
1087         f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576;
1088         vidioc_try_fmt_vid_cap(file, priv, &f);
1089
1090         /* set new image size */
1091         dev->width = f.fmt.pix.width;
1092         dev->height = f.fmt.pix.height;
1093         size_to_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1094
1095         em28xx_resolution_set(dev);
1096         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1097
1098         return 0;
1099 }
1100
1101 static int vidioc_g_parm(struct file *file, void *priv,
1102                          struct v4l2_streamparm *p)
1103 {
1104         struct em28xx_fh   *fh  = priv;
1105         struct em28xx      *dev = fh->dev;
1106         int rc = 0;
1107
1108         p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1109         if (dev->board.is_webcam)
1110                 rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0,
1111                                                 video, g_parm, p);
1112         else
1113                 v4l2_video_std_frame_period(dev->norm,
1114                                                  &p->parm.capture.timeperframe);
1115
1116         return rc;
1117 }
1118
1119 static int vidioc_s_parm(struct file *file, void *priv,
1120                          struct v4l2_streamparm *p)
1121 {
1122         struct em28xx_fh   *fh  = priv;
1123         struct em28xx      *dev = fh->dev;
1124
1125         p->parm.capture.readbuffers = EM28XX_MIN_BUF;
1126         return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p);
1127 }
1128
1129 static const char *iname[] = {
1130         [EM28XX_VMUX_COMPOSITE1] = "Composite1",
1131         [EM28XX_VMUX_COMPOSITE2] = "Composite2",
1132         [EM28XX_VMUX_COMPOSITE3] = "Composite3",
1133         [EM28XX_VMUX_COMPOSITE4] = "Composite4",
1134         [EM28XX_VMUX_SVIDEO]     = "S-Video",
1135         [EM28XX_VMUX_TELEVISION] = "Television",
1136         [EM28XX_VMUX_CABLE]      = "Cable TV",
1137         [EM28XX_VMUX_DVB]        = "DVB",
1138         [EM28XX_VMUX_DEBUG]      = "for debug only",
1139 };
1140
1141 static int vidioc_enum_input(struct file *file, void *priv,
1142                                 struct v4l2_input *i)
1143 {
1144         struct em28xx_fh   *fh  = priv;
1145         struct em28xx      *dev = fh->dev;
1146         unsigned int       n;
1147
1148         n = i->index;
1149         if (n >= MAX_EM28XX_INPUT)
1150                 return -EINVAL;
1151         if (0 == INPUT(n)->type)
1152                 return -EINVAL;
1153
1154         i->index = n;
1155         i->type = V4L2_INPUT_TYPE_CAMERA;
1156
1157         strcpy(i->name, iname[INPUT(n)->type]);
1158
1159         if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
1160                 (EM28XX_VMUX_CABLE == INPUT(n)->type))
1161                 i->type = V4L2_INPUT_TYPE_TUNER;
1162
1163         i->std = dev->vdev->tvnorms;
1164         /* webcams do not have the STD API */
1165         if (dev->board.is_webcam)
1166                 i->capabilities = 0;
1167
1168         return 0;
1169 }
1170
1171 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1172 {
1173         struct em28xx_fh   *fh  = priv;
1174         struct em28xx      *dev = fh->dev;
1175
1176         *i = dev->ctl_input;
1177
1178         return 0;
1179 }
1180
1181 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1182 {
1183         struct em28xx_fh   *fh  = priv;
1184         struct em28xx      *dev = fh->dev;
1185
1186         if (i >= MAX_EM28XX_INPUT)
1187                 return -EINVAL;
1188         if (0 == INPUT(i)->type)
1189                 return -EINVAL;
1190
1191         video_mux(dev, i);
1192         return 0;
1193 }
1194
1195 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1196 {
1197         struct em28xx_fh   *fh    = priv;
1198         struct em28xx      *dev   = fh->dev;
1199
1200         switch (a->index) {
1201         case EM28XX_AMUX_VIDEO:
1202                 strcpy(a->name, "Television");
1203                 break;
1204         case EM28XX_AMUX_LINE_IN:
1205                 strcpy(a->name, "Line In");
1206                 break;
1207         case EM28XX_AMUX_VIDEO2:
1208                 strcpy(a->name, "Television alt");
1209                 break;
1210         case EM28XX_AMUX_PHONE:
1211                 strcpy(a->name, "Phone");
1212                 break;
1213         case EM28XX_AMUX_MIC:
1214                 strcpy(a->name, "Mic");
1215                 break;
1216         case EM28XX_AMUX_CD:
1217                 strcpy(a->name, "CD");
1218                 break;
1219         case EM28XX_AMUX_AUX:
1220                 strcpy(a->name, "Aux");
1221                 break;
1222         case EM28XX_AMUX_PCM_OUT:
1223                 strcpy(a->name, "PCM");
1224                 break;
1225         default:
1226                 return -EINVAL;
1227         }
1228
1229         a->index = dev->ctl_ainput;
1230         a->capability = V4L2_AUDCAP_STEREO;
1231
1232         return 0;
1233 }
1234
1235 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1236 {
1237         struct em28xx_fh   *fh  = priv;
1238         struct em28xx      *dev = fh->dev;
1239
1240         if (a->index >= MAX_EM28XX_INPUT)
1241                 return -EINVAL;
1242         if (0 == INPUT(a->index)->type)
1243                 return -EINVAL;
1244
1245         dev->ctl_ainput = INPUT(a->index)->amux;
1246         dev->ctl_aoutput = INPUT(a->index)->aout;
1247
1248         if (!dev->ctl_aoutput)
1249                 dev->ctl_aoutput = EM28XX_AOUT_MASTER;
1250
1251         return 0;
1252 }
1253
1254 static int vidioc_g_tuner(struct file *file, void *priv,
1255                                 struct v4l2_tuner *t)
1256 {
1257         struct em28xx_fh      *fh  = priv;
1258         struct em28xx         *dev = fh->dev;
1259
1260         if (0 != t->index)
1261                 return -EINVAL;
1262
1263         strcpy(t->name, "Tuner");
1264
1265         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1266         return 0;
1267 }
1268
1269 static int vidioc_s_tuner(struct file *file, void *priv,
1270                                 const struct v4l2_tuner *t)
1271 {
1272         struct em28xx_fh      *fh  = priv;
1273         struct em28xx         *dev = fh->dev;
1274
1275         if (0 != t->index)
1276                 return -EINVAL;
1277
1278         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1279         return 0;
1280 }
1281
1282 static int vidioc_g_frequency(struct file *file, void *priv,
1283                                 struct v4l2_frequency *f)
1284 {
1285         struct em28xx_fh      *fh  = priv;
1286         struct em28xx         *dev = fh->dev;
1287
1288         if (0 != f->tuner)
1289                 return -EINVAL;
1290
1291         f->frequency = dev->ctl_freq;
1292         return 0;
1293 }
1294
1295 static int vidioc_s_frequency(struct file *file, void *priv,
1296                                 const struct v4l2_frequency *f)
1297 {
1298         struct v4l2_frequency new_freq = *f;
1299         struct em28xx_fh      *fh  = priv;
1300         struct em28xx         *dev = fh->dev;
1301
1302         if (0 != f->tuner)
1303                 return -EINVAL;
1304
1305         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1306         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1307         dev->ctl_freq = new_freq.frequency;
1308
1309         return 0;
1310 }
1311
1312 #ifdef CONFIG_VIDEO_ADV_DEBUG
1313 static int vidioc_g_chip_info(struct file *file, void *priv,
1314                struct v4l2_dbg_chip_info *chip)
1315 {
1316         struct em28xx_fh      *fh  = priv;
1317         struct em28xx         *dev = fh->dev;
1318
1319         if (chip->match.addr > 1)
1320                 return -EINVAL;
1321         if (chip->match.addr == 1)
1322                 strlcpy(chip->name, "ac97", sizeof(chip->name));
1323         else
1324                 strlcpy(chip->name, dev->v4l2_dev.name, sizeof(chip->name));
1325         return 0;
1326 }
1327
1328 static int em28xx_reg_len(int reg)
1329 {
1330         switch (reg) {
1331         case EM28XX_R40_AC97LSB:
1332         case EM28XX_R30_HSCALELOW:
1333         case EM28XX_R32_VSCALELOW:
1334                 return 2;
1335         default:
1336                 return 1;
1337         }
1338 }
1339
1340 static int vidioc_g_register(struct file *file, void *priv,
1341                              struct v4l2_dbg_register *reg)
1342 {
1343         struct em28xx_fh      *fh  = priv;
1344         struct em28xx         *dev = fh->dev;
1345         int ret;
1346
1347         if (reg->match.addr > 1)
1348                 return -EINVAL;
1349         if (reg->match.addr) {
1350                 ret = em28xx_read_ac97(dev, reg->reg);
1351                 if (ret < 0)
1352                         return ret;
1353
1354                 reg->val = ret;
1355                 reg->size = 1;
1356                 return 0;
1357         }
1358
1359         /* Match host */
1360         reg->size = em28xx_reg_len(reg->reg);
1361         if (reg->size == 1) {
1362                 ret = em28xx_read_reg(dev, reg->reg);
1363
1364                 if (ret < 0)
1365                         return ret;
1366
1367                 reg->val = ret;
1368         } else {
1369                 __le16 val = 0;
1370                 ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS,
1371                                                    reg->reg, (char *)&val, 2);
1372                 if (ret < 0)
1373                         return ret;
1374
1375                 reg->val = le16_to_cpu(val);
1376         }
1377
1378         return 0;
1379 }
1380
1381 static int vidioc_s_register(struct file *file, void *priv,
1382                              const struct v4l2_dbg_register *reg)
1383 {
1384         struct em28xx_fh      *fh  = priv;
1385         struct em28xx         *dev = fh->dev;
1386         __le16 buf;
1387
1388         if (reg->match.addr > 1)
1389                 return -EINVAL;
1390         if (reg->match.addr)
1391                 return em28xx_write_ac97(dev, reg->reg, reg->val);
1392
1393         /* Match host */
1394         buf = cpu_to_le16(reg->val);
1395
1396         return em28xx_write_regs(dev, reg->reg, (char *)&buf,
1397                                em28xx_reg_len(reg->reg));
1398 }
1399 #endif
1400
1401
1402 static int vidioc_querycap(struct file *file, void  *priv,
1403                                         struct v4l2_capability *cap)
1404 {
1405         struct video_device *vdev = video_devdata(file);
1406         struct em28xx_fh      *fh  = priv;
1407         struct em28xx         *dev = fh->dev;
1408
1409         strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
1410         strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
1411         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1412
1413         if (vdev->vfl_type == VFL_TYPE_GRABBER)
1414                 cap->device_caps = V4L2_CAP_READWRITE |
1415                         V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1416         else if (vdev->vfl_type == VFL_TYPE_RADIO)
1417                 cap->device_caps = V4L2_CAP_RADIO;
1418         else
1419                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE;
1420
1421         if (dev->audio_mode.has_audio)
1422                 cap->device_caps |= V4L2_CAP_AUDIO;
1423
1424         if (dev->tuner_type != TUNER_ABSENT)
1425                 cap->device_caps |= V4L2_CAP_TUNER;
1426
1427         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1428                 V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1429         if (dev->vbi_dev)
1430                 cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
1431         if (dev->radio_dev)
1432                 cap->capabilities |= V4L2_CAP_RADIO;
1433         return 0;
1434 }
1435
1436 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1437                                         struct v4l2_fmtdesc *f)
1438 {
1439         if (unlikely(f->index >= ARRAY_SIZE(format)))
1440                 return -EINVAL;
1441
1442         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1443         f->pixelformat = format[f->index].fourcc;
1444
1445         return 0;
1446 }
1447
1448 static int vidioc_enum_framesizes(struct file *file, void *priv,
1449                                   struct v4l2_frmsizeenum *fsize)
1450 {
1451         struct em28xx_fh      *fh  = priv;
1452         struct em28xx         *dev = fh->dev;
1453         struct em28xx_fmt     *fmt;
1454         unsigned int          maxw = norm_maxw(dev);
1455         unsigned int          maxh = norm_maxh(dev);
1456
1457         fmt = format_by_fourcc(fsize->pixel_format);
1458         if (!fmt) {
1459                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1460                                 fsize->pixel_format);
1461                 return -EINVAL;
1462         }
1463
1464         if (dev->board.is_em2800) {
1465                 if (fsize->index > 1)
1466                         return -EINVAL;
1467                 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1468                 fsize->discrete.width = maxw / (1 + fsize->index);
1469                 fsize->discrete.height = maxh / (1 + fsize->index);
1470                 return 0;
1471         }
1472
1473         if (fsize->index != 0)
1474                 return -EINVAL;
1475
1476         /* Report a continuous range */
1477         fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1478         scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX,
1479                       &fsize->stepwise.min_width, &fsize->stepwise.min_height);
1480         if (fsize->stepwise.min_width < 48)
1481                 fsize->stepwise.min_width = 48;
1482         if (fsize->stepwise.min_height < 38)
1483                 fsize->stepwise.min_height = 38;
1484         fsize->stepwise.max_width = maxw;
1485         fsize->stepwise.max_height = maxh;
1486         fsize->stepwise.step_width = 1;
1487         fsize->stepwise.step_height = 1;
1488         return 0;
1489 }
1490
1491 /* RAW VBI ioctls */
1492
1493 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1494                                 struct v4l2_format *format)
1495 {
1496         struct em28xx_fh      *fh  = priv;
1497         struct em28xx         *dev = fh->dev;
1498
1499         format->fmt.vbi.samples_per_line = dev->vbi_width;
1500         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1501         format->fmt.vbi.offset = 0;
1502         format->fmt.vbi.flags = 0;
1503         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1504         format->fmt.vbi.count[0] = dev->vbi_height;
1505         format->fmt.vbi.count[1] = dev->vbi_height;
1506         memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1507
1508         /* Varies by video standard (NTSC, PAL, etc.) */
1509         if (dev->norm & V4L2_STD_525_60) {
1510                 /* NTSC */
1511                 format->fmt.vbi.start[0] = 10;
1512                 format->fmt.vbi.start[1] = 273;
1513         } else if (dev->norm & V4L2_STD_625_50) {
1514                 /* PAL */
1515                 format->fmt.vbi.start[0] = 6;
1516                 format->fmt.vbi.start[1] = 318;
1517         }
1518
1519         return 0;
1520 }
1521
1522 /* ----------------------------------------------------------- */
1523 /* RADIO ESPECIFIC IOCTLS                                      */
1524 /* ----------------------------------------------------------- */
1525
1526 static int radio_g_tuner(struct file *file, void *priv,
1527                          struct v4l2_tuner *t)
1528 {
1529         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1530
1531         if (unlikely(t->index > 0))
1532                 return -EINVAL;
1533
1534         strcpy(t->name, "Radio");
1535
1536         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1537
1538         return 0;
1539 }
1540
1541 static int radio_s_tuner(struct file *file, void *priv,
1542                          const struct v4l2_tuner *t)
1543 {
1544         struct em28xx *dev = ((struct em28xx_fh *)priv)->dev;
1545
1546         if (0 != t->index)
1547                 return -EINVAL;
1548
1549         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1550
1551         return 0;
1552 }
1553
1554 /*
1555  * em28xx_v4l2_open()
1556  * inits the device and starts isoc transfer
1557  */
1558 static int em28xx_v4l2_open(struct file *filp)
1559 {
1560         struct video_device *vdev = video_devdata(filp);
1561         struct em28xx *dev = video_drvdata(filp);
1562         enum v4l2_buf_type fh_type = 0;
1563         struct em28xx_fh *fh;
1564
1565         switch (vdev->vfl_type) {
1566         case VFL_TYPE_GRABBER:
1567                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1568                 break;
1569         case VFL_TYPE_VBI:
1570                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1571                 break;
1572         }
1573
1574         em28xx_videodbg("open dev=%s type=%s users=%d\n",
1575                         video_device_node_name(vdev), v4l2_type_names[fh_type],
1576                         dev->users);
1577
1578
1579         if (mutex_lock_interruptible(&dev->lock))
1580                 return -ERESTARTSYS;
1581         fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
1582         if (!fh) {
1583                 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1584                 mutex_unlock(&dev->lock);
1585                 return -ENOMEM;
1586         }
1587         v4l2_fh_init(&fh->fh, vdev);
1588         fh->dev = dev;
1589         fh->type = fh_type;
1590         filp->private_data = fh;
1591
1592         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1593                 em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
1594                 em28xx_resolution_set(dev);
1595
1596                 /* Needed, since GPIO might have disabled power of
1597                    some i2c device
1598                  */
1599                 em28xx_wake_i2c(dev);
1600
1601         }
1602
1603         if (vdev->vfl_type == VFL_TYPE_RADIO) {
1604                 em28xx_videodbg("video_open: setting radio device\n");
1605                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1606         }
1607
1608         dev->users++;
1609
1610         mutex_unlock(&dev->lock);
1611         v4l2_fh_add(&fh->fh);
1612
1613         return 0;
1614 }
1615
1616 /*
1617  * em28xx_realease_resources()
1618  * unregisters the v4l2,i2c and usb devices
1619  * called when the device gets disconected or at module unload
1620 */
1621 void em28xx_release_analog_resources(struct em28xx *dev)
1622 {
1623
1624         /*FIXME: I2C IR should be disconnected */
1625
1626         if (dev->radio_dev) {
1627                 if (video_is_registered(dev->radio_dev))
1628                         video_unregister_device(dev->radio_dev);
1629                 else
1630                         video_device_release(dev->radio_dev);
1631                 dev->radio_dev = NULL;
1632         }
1633         if (dev->vbi_dev) {
1634                 em28xx_info("V4L2 device %s deregistered\n",
1635                             video_device_node_name(dev->vbi_dev));
1636                 if (video_is_registered(dev->vbi_dev))
1637                         video_unregister_device(dev->vbi_dev);
1638                 else
1639                         video_device_release(dev->vbi_dev);
1640                 dev->vbi_dev = NULL;
1641         }
1642         if (dev->vdev) {
1643                 em28xx_info("V4L2 device %s deregistered\n",
1644                             video_device_node_name(dev->vdev));
1645                 if (video_is_registered(dev->vdev))
1646                         video_unregister_device(dev->vdev);
1647                 else
1648                         video_device_release(dev->vdev);
1649                 dev->vdev = NULL;
1650         }
1651 }
1652
1653 /*
1654  * em28xx_v4l2_close()
1655  * stops streaming and deallocates all resources allocated by the v4l2
1656  * calls and ioctls
1657  */
1658 static int em28xx_v4l2_close(struct file *filp)
1659 {
1660         struct em28xx_fh *fh  = filp->private_data;
1661         struct em28xx    *dev = fh->dev;
1662         int              errCode;
1663
1664         em28xx_videodbg("users=%d\n", dev->users);
1665
1666         mutex_lock(&dev->lock);
1667         vb2_fop_release(filp);
1668
1669         if (dev->users == 1) {
1670                 /* the device is already disconnect,
1671                    free the remaining resources */
1672                 if (dev->disconnected) {
1673                         em28xx_release_resources(dev);
1674                         kfree(dev->alt_max_pkt_size_isoc);
1675                         mutex_unlock(&dev->lock);
1676                         kfree(dev);
1677                         return 0;
1678                 }
1679
1680                 /* Save some power by putting tuner to sleep */
1681                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
1682
1683                 /* do this before setting alternate! */
1684                 em28xx_set_mode(dev, EM28XX_SUSPEND);
1685
1686                 /* set alternate 0 */
1687                 dev->alt = 0;
1688                 em28xx_videodbg("setting alternate 0\n");
1689                 errCode = usb_set_interface(dev->udev, 0, 0);
1690                 if (errCode < 0) {
1691                         em28xx_errdev("cannot change alternate number to "
1692                                         "0 (error=%i)\n", errCode);
1693                 }
1694         }
1695
1696         dev->users--;
1697         mutex_unlock(&dev->lock);
1698         return 0;
1699 }
1700
1701 static const struct v4l2_file_operations em28xx_v4l_fops = {
1702         .owner         = THIS_MODULE,
1703         .open          = em28xx_v4l2_open,
1704         .release       = em28xx_v4l2_close,
1705         .read          = vb2_fop_read,
1706         .poll          = vb2_fop_poll,
1707         .mmap          = vb2_fop_mmap,
1708         .unlocked_ioctl = video_ioctl2,
1709 };
1710
1711 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1712         .vidioc_querycap            = vidioc_querycap,
1713         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1714         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1715         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1716         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1717         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1718         .vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
1719         .vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1720         .vidioc_enum_framesizes     = vidioc_enum_framesizes,
1721         .vidioc_g_audio             = vidioc_g_audio,
1722         .vidioc_s_audio             = vidioc_s_audio,
1723
1724         .vidioc_reqbufs             = vb2_ioctl_reqbufs,
1725         .vidioc_create_bufs         = vb2_ioctl_create_bufs,
1726         .vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
1727         .vidioc_querybuf            = vb2_ioctl_querybuf,
1728         .vidioc_qbuf                = vb2_ioctl_qbuf,
1729         .vidioc_dqbuf               = vb2_ioctl_dqbuf,
1730
1731         .vidioc_g_std               = vidioc_g_std,
1732         .vidioc_querystd            = vidioc_querystd,
1733         .vidioc_s_std               = vidioc_s_std,
1734         .vidioc_g_parm              = vidioc_g_parm,
1735         .vidioc_s_parm              = vidioc_s_parm,
1736         .vidioc_enum_input          = vidioc_enum_input,
1737         .vidioc_g_input             = vidioc_g_input,
1738         .vidioc_s_input             = vidioc_s_input,
1739         .vidioc_streamon            = vb2_ioctl_streamon,
1740         .vidioc_streamoff           = vb2_ioctl_streamoff,
1741         .vidioc_g_tuner             = vidioc_g_tuner,
1742         .vidioc_s_tuner             = vidioc_s_tuner,
1743         .vidioc_g_frequency         = vidioc_g_frequency,
1744         .vidioc_s_frequency         = vidioc_s_frequency,
1745         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1746         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1747 #ifdef CONFIG_VIDEO_ADV_DEBUG
1748         .vidioc_g_chip_info         = vidioc_g_chip_info,
1749         .vidioc_g_register          = vidioc_g_register,
1750         .vidioc_s_register          = vidioc_s_register,
1751 #endif
1752 };
1753
1754 static const struct video_device em28xx_video_template = {
1755         .fops                       = &em28xx_v4l_fops,
1756         .release                    = video_device_release_empty,
1757         .ioctl_ops                  = &video_ioctl_ops,
1758
1759         .tvnorms                    = V4L2_STD_ALL,
1760 };
1761
1762 static const struct v4l2_file_operations radio_fops = {
1763         .owner         = THIS_MODULE,
1764         .open          = em28xx_v4l2_open,
1765         .release       = em28xx_v4l2_close,
1766         .unlocked_ioctl = video_ioctl2,
1767 };
1768
1769 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1770         .vidioc_querycap      = vidioc_querycap,
1771         .vidioc_g_tuner       = radio_g_tuner,
1772         .vidioc_s_tuner       = radio_s_tuner,
1773         .vidioc_g_frequency   = vidioc_g_frequency,
1774         .vidioc_s_frequency   = vidioc_s_frequency,
1775         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1776         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1777 #ifdef CONFIG_VIDEO_ADV_DEBUG
1778         .vidioc_g_chip_info   = vidioc_g_chip_info,
1779         .vidioc_g_register    = vidioc_g_register,
1780         .vidioc_s_register    = vidioc_s_register,
1781 #endif
1782 };
1783
1784 static struct video_device em28xx_radio_template = {
1785         .name                 = "em28xx-radio",
1786         .fops                 = &radio_fops,
1787         .ioctl_ops            = &radio_ioctl_ops,
1788 };
1789
1790 /******************************** usb interface ******************************/
1791
1792
1793
1794 static struct video_device *em28xx_vdev_init(struct em28xx *dev,
1795                                         const struct video_device *template,
1796                                         const char *type_name)
1797 {
1798         struct video_device *vfd;
1799
1800         vfd = video_device_alloc();
1801         if (NULL == vfd)
1802                 return NULL;
1803
1804         *vfd            = *template;
1805         vfd->v4l2_dev   = &dev->v4l2_dev;
1806         vfd->debug      = video_debug;
1807         vfd->lock       = &dev->lock;
1808         set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1809         if (dev->board.is_webcam)
1810                 vfd->tvnorms = 0;
1811
1812         snprintf(vfd->name, sizeof(vfd->name), "%s %s",
1813                  dev->name, type_name);
1814
1815         video_set_drvdata(vfd, dev);
1816         return vfd;
1817 }
1818
1819 int em28xx_register_analog_devices(struct em28xx *dev)
1820 {
1821         u8 val;
1822         int ret;
1823         unsigned int maxw;
1824
1825         printk(KERN_INFO "%s: v4l2 driver version %s\n",
1826                 dev->name, EM28XX_VERSION);
1827
1828         /* set default norm */
1829         dev->norm = V4L2_STD_PAL;
1830         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1831         dev->interlaced = EM28XX_INTERLACED_DEFAULT;
1832
1833         /* Analog specific initialization */
1834         dev->format = &format[0];
1835
1836         maxw = norm_maxw(dev);
1837         /* MaxPacketSize for em2800 is too small to capture at full resolution
1838          * use half of maxw as the scaler can only scale to 50% */
1839         if (dev->board.is_em2800)
1840                 maxw /= 2;
1841
1842         em28xx_set_video_format(dev, format[0].fourcc,
1843                                 maxw, norm_maxh(dev));
1844
1845         video_mux(dev, 0);
1846
1847         /* Audio defaults */
1848         dev->mute = 1;
1849         dev->volume = 0x1f;
1850
1851 /*      em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
1852         val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK);
1853         em28xx_write_reg(dev, EM28XX_R0F_XCLK,
1854                          (EM28XX_XCLK_AUDIO_UNMUTE | val));
1855
1856         em28xx_set_outfmt(dev);
1857         em28xx_compression_disable(dev);
1858
1859         /* Add image controls */
1860         /* NOTE: at this point, the subdevices are already registered, so bridge
1861          * controls are only added/enabled when no subdevice provides them */
1862         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_CONTRAST))
1863                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1864                                   V4L2_CID_CONTRAST,
1865                                   0, 0x1f, 1, CONTRAST_DEFAULT);
1866         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BRIGHTNESS))
1867                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1868                                   V4L2_CID_BRIGHTNESS,
1869                                   -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT);
1870         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SATURATION))
1871                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1872                                   V4L2_CID_SATURATION,
1873                                   0, 0x1f, 1, SATURATION_DEFAULT);
1874         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_BLUE_BALANCE))
1875                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1876                                   V4L2_CID_BLUE_BALANCE,
1877                                   -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT);
1878         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_RED_BALANCE))
1879                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1880                                   V4L2_CID_RED_BALANCE,
1881                                   -0x30, 0x30, 1, RED_BALANCE_DEFAULT);
1882         if (NULL == v4l2_ctrl_find(&dev->ctrl_handler, V4L2_CID_SHARPNESS))
1883                 v4l2_ctrl_new_std(&dev->ctrl_handler, &em28xx_ctrl_ops,
1884                                   V4L2_CID_SHARPNESS,
1885                                   0, 0x0f, 1, SHARPNESS_DEFAULT);
1886
1887         /* Reset image controls */
1888         em28xx_colorlevels_set_default(dev);
1889         v4l2_ctrl_handler_setup(&dev->ctrl_handler);
1890         if (dev->ctrl_handler.error)
1891                 return dev->ctrl_handler.error;
1892
1893         /* allocate and fill video video_device struct */
1894         dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
1895         if (!dev->vdev) {
1896                 em28xx_errdev("cannot allocate video_device.\n");
1897                 return -ENODEV;
1898         }
1899         dev->vdev->queue = &dev->vb_vidq;
1900         dev->vdev->queue->lock = &dev->vb_queue_lock;
1901
1902         /* disable inapplicable ioctls */
1903         if (dev->board.is_webcam) {
1904                 v4l2_disable_ioctl(dev->vdev, VIDIOC_QUERYSTD);
1905                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_STD);
1906                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_STD);
1907         } else {
1908                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1909         }
1910         if (dev->tuner_type == TUNER_ABSENT) {
1911                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_TUNER);
1912                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_TUNER);
1913                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_FREQUENCY);
1914                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_FREQUENCY);
1915         }
1916         if (!dev->audio_mode.has_audio) {
1917                 v4l2_disable_ioctl(dev->vdev, VIDIOC_G_AUDIO);
1918                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_AUDIO);
1919         }
1920
1921         /* register v4l2 video video_device */
1922         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
1923                                        video_nr[dev->devno]);
1924         if (ret) {
1925                 em28xx_errdev("unable to register video device (error=%i).\n",
1926                               ret);
1927                 return ret;
1928         }
1929
1930         /* Allocate and fill vbi video_device struct */
1931         if (em28xx_vbi_supported(dev) == 1) {
1932                 dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
1933                                                 "vbi");
1934
1935                 dev->vbi_dev->queue = &dev->vb_vbiq;
1936                 dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
1937
1938                 /* disable inapplicable ioctls */
1939                 v4l2_disable_ioctl(dev->vdev, VIDIOC_S_PARM);
1940                 if (dev->tuner_type == TUNER_ABSENT) {
1941                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_TUNER);
1942                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_TUNER);
1943                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_FREQUENCY);
1944                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_FREQUENCY);
1945                 }
1946                 if (!dev->audio_mode.has_audio) {
1947                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_G_AUDIO);
1948                         v4l2_disable_ioctl(dev->vbi_dev, VIDIOC_S_AUDIO);
1949                 }
1950
1951                 /* register v4l2 vbi video_device */
1952                 ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
1953                                             vbi_nr[dev->devno]);
1954                 if (ret < 0) {
1955                         em28xx_errdev("unable to register vbi device\n");
1956                         return ret;
1957                 }
1958         }
1959
1960         if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
1961                 dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
1962                                                   "radio");
1963                 if (!dev->radio_dev) {
1964                         em28xx_errdev("cannot allocate video_device.\n");
1965                         return -ENODEV;
1966                 }
1967                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1968                                             radio_nr[dev->devno]);
1969                 if (ret < 0) {
1970                         em28xx_errdev("can't register radio device\n");
1971                         return ret;
1972                 }
1973                 em28xx_info("Registered radio device as %s\n",
1974                             video_device_node_name(dev->radio_dev));
1975         }
1976
1977         em28xx_info("V4L2 video device registered as %s\n",
1978                     video_device_node_name(dev->vdev));
1979
1980         if (dev->vbi_dev)
1981                 em28xx_info("V4L2 VBI device registered as %s\n",
1982                             video_device_node_name(dev->vbi_dev));
1983
1984         return 0;
1985 }