drivers/media/usb/cx231xx/cx231xx-video.c

   1 /*
   2    cx231xx-video.c - driver for Conexant Cx23100/101/102
   3                      USB video capture devices
   4
   5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   6         Based on em28xx driver
   7         Based on cx23885 driver
   8         Based on cx88 driver
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include "cx231xx.h"
  26 #include <linux/init.h>
  27 #include <linux/list.h>
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/bitmap.h>
  31 #include <linux/i2c.h>
  32 #include <linux/mm.h>
  33 #include <linux/mutex.h>
  34 #include <linux/slab.h>
  35
  36 #include <media/v4l2-common.h>
  37 #include <media/v4l2-ioctl.h>
  38 #include <media/v4l2-event.h>
  39 #include <media/msp3400.h>
  40 #include <media/tuner.h>
  41
  42 #include "dvb_frontend.h"
  43
  44 #include "cx231xx-vbi.h"
  45
  46 #define CX231XX_VERSION "0.0.3"
  47
  48 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  49 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  50
  51 #define cx231xx_videodbg(fmt, arg...) do {\
  52         if (video_debug) \
  53                 printk(KERN_INFO "%s %s :"fmt, \
  54                          dev->name, __func__ , ##arg); } while (0)
  55
  56 static unsigned int isoc_debug;
  57 module_param(isoc_debug, int, 0644);
  58 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  59
  60 #define cx231xx_isocdbg(fmt, arg...) \
  61 do {\
  62         if (isoc_debug) { \
  63                 printk(KERN_INFO "%s %s :"fmt, \
  64                          dev->name, __func__ , ##arg); \
  65         } \
  66   } while (0)
  67
  68 MODULE_AUTHOR(DRIVER_AUTHOR);
  69 MODULE_DESCRIPTION(DRIVER_DESC);
  70 MODULE_LICENSE("GPL");
  71 MODULE_VERSION(CX231XX_VERSION);
  72
  73 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  74 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  75 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  76 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  77
  78 module_param_array(card, int, NULL, 0444);
  79 module_param_array(video_nr, int, NULL, 0444);
  80 module_param_array(vbi_nr, int, NULL, 0444);
  81 module_param_array(radio_nr, int, NULL, 0444);
  82
  83 MODULE_PARM_DESC(card, "card type");
  84 MODULE_PARM_DESC(video_nr, "video device numbers");
  85 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  86 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  87
  88 static unsigned int video_debug;
  89 module_param(video_debug, int, 0644);
  90 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  91
  92 /* supported video standards */
  93 static struct cx231xx_fmt format[] = {
  94         {
  95          .name = "16bpp YUY2, 4:2:2, packed",
  96          .fourcc = V4L2_PIX_FMT_YUYV,
  97          .depth = 16,
  98          .reg = 0,
  99          },
 100 };
 101
 102
 103 /* ------------------------------------------------------------------
 104         Video buffer and parser functions
 105    ------------------------------------------------------------------*/
 106
 107 /*
 108  * Announces that a buffer were filled and request the next
 109  */
 110 static inline void buffer_filled(struct cx231xx *dev,
 111                                  struct cx231xx_dmaqueue *dma_q,
 112                                  struct cx231xx_buffer *buf)
 113 {
 114         /* Advice that buffer was filled */
 115         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 116         buf->vb.state = VIDEOBUF_DONE;
 117         buf->vb.field_count++;
 118         v4l2_get_timestamp(&buf->vb.ts);
 119
 120         if (dev->USE_ISO)
 121                 dev->video_mode.isoc_ctl.buf = NULL;
 122         else
 123                 dev->video_mode.bulk_ctl.buf = NULL;
 124
 125         list_del(&buf->vb.queue);
 126         wake_up(&buf->vb.done);
 127 }
 128
 129 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 130 {
 131         char *errmsg = "Unknown";
 132
 133         switch (status) {
 134         case -ENOENT:
 135                 errmsg = "unlinked synchronuously";
 136                 break;
 137         case -ECONNRESET:
 138                 errmsg = "unlinked asynchronuously";
 139                 break;
 140         case -ENOSR:
 141                 errmsg = "Buffer error (overrun)";
 142                 break;
 143         case -EPIPE:
 144                 errmsg = "Stalled (device not responding)";
 145                 break;
 146         case -EOVERFLOW:
 147                 errmsg = "Babble (bad cable?)";
 148                 break;
 149         case -EPROTO:
 150                 errmsg = "Bit-stuff error (bad cable?)";
 151                 break;
 152         case -EILSEQ:
 153                 errmsg = "CRC/Timeout (could be anything)";
 154                 break;
 155         case -ETIME:
 156                 errmsg = "Device does not respond";
 157                 break;
 158         }
 159         if (packet < 0) {
 160                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 161         } else {
 162                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 163                                 packet, status, errmsg);
 164         }
 165 }
 166
 167 /*
 168  * video-buf generic routine to get the next available buffer
 169  */
 170 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 171                                 struct cx231xx_buffer **buf)
 172 {
 173         struct cx231xx_video_mode *vmode =
 174             container_of(dma_q, struct cx231xx_video_mode, vidq);
 175         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 176
 177         char *outp;
 178
 179         if (list_empty(&dma_q->active)) {
 180                 cx231xx_isocdbg("No active queue to serve\n");
 181                 if (dev->USE_ISO)
 182                         dev->video_mode.isoc_ctl.buf = NULL;
 183                 else
 184                         dev->video_mode.bulk_ctl.buf = NULL;
 185                 *buf = NULL;
 186                 return;
 187         }
 188
 189         /* Get the next buffer */
 190         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 191
 192         /* Cleans up buffer - Useful for testing for frame/URB loss */
 193         outp = videobuf_to_vmalloc(&(*buf)->vb);
 194         memset(outp, 0, (*buf)->vb.size);
 195
 196         if (dev->USE_ISO)
 197                 dev->video_mode.isoc_ctl.buf = *buf;
 198         else
 199                 dev->video_mode.bulk_ctl.buf = *buf;
 200
 201         return;
 202 }
 203
 204 /*
 205  * Controls the isoc copy of each urb packet
 206  */
 207 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 208 {
 209         struct cx231xx_dmaqueue *dma_q = urb->context;
 210         int i;
 211         unsigned char *p_buffer;
 212         u32 bytes_parsed = 0, buffer_size = 0;
 213         u8 sav_eav = 0;
 214
 215         if (!dev)
 216                 return 0;
 217
 218         if (dev->state & DEV_DISCONNECTED)
 219                 return 0;
 220
 221         if (urb->status < 0) {
 222                 print_err_status(dev, -1, urb->status);
 223                 if (urb->status == -ENOENT)
 224                         return 0;
 225         }
 226
 227         for (i = 0; i < urb->number_of_packets; i++) {
 228                 int status = urb->iso_frame_desc[i].status;
 229
 230                 if (status < 0) {
 231                         print_err_status(dev, i, status);
 232                         if (urb->iso_frame_desc[i].status != -EPROTO)
 233                                 continue;
 234                 }
 235
 236                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 237                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 238                         continue;
 239                 }
 240                 if (urb->iso_frame_desc[i].actual_length >
 241                     dev->video_mode.max_pkt_size) {
 242                         cx231xx_isocdbg("packet bigger than packet size");
 243                         continue;
 244                 }
 245
 246                 /*  get buffer pointer and length */
 247                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 248                 buffer_size = urb->iso_frame_desc[i].actual_length;
 249                 bytes_parsed = 0;
 250
 251                 if (dma_q->is_partial_line) {
 252                         /* Handle the case of a partial line */
 253                         sav_eav = dma_q->last_sav;
 254                 } else {
 255                         /* Check for a SAV/EAV overlapping
 256                                 the buffer boundary */
 257                         sav_eav =
 258                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 259                                                           dma_q->partial_buf,
 260                                                           &bytes_parsed);
 261                 }
 262
 263                 sav_eav &= 0xF0;
 264                 /* Get the first line if we have some portion of an SAV/EAV from
 265                    the last buffer or a partial line  */
 266                 if (sav_eav) {
 267                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 268                                 sav_eav,        /* SAV/EAV */
 269                                 p_buffer + bytes_parsed,        /* p_buffer */
 270                                 buffer_size - bytes_parsed);/* buf size */
 271                 }
 272
 273                 /* Now parse data that is completely in this buffer */
 274                 /* dma_q->is_partial_line = 0;  */
 275
 276                 while (bytes_parsed < buffer_size) {
 277                         u32 bytes_used = 0;
 278
 279                         sav_eav = cx231xx_find_next_SAV_EAV(
 280                                 p_buffer + bytes_parsed,        /* p_buffer */
 281                                 buffer_size - bytes_parsed,     /* buf size */
 282                                 &bytes_used);/* bytes used to get SAV/EAV */
 283
 284                         bytes_parsed += bytes_used;
 285
 286                         sav_eav &= 0xF0;
 287                         if (sav_eav && (bytes_parsed < buffer_size)) {
 288                                 bytes_parsed += cx231xx_get_video_line(dev,
 289                                         dma_q, sav_eav, /* SAV/EAV */
 290                                         p_buffer + bytes_parsed,/* p_buffer */
 291                                         buffer_size - bytes_parsed);/*buf size*/
 292                         }
 293                 }
 294
 295                 /* Save the last four bytes of the buffer so we can check the
 296                    buffer boundary condition next time */
 297                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 298                 bytes_parsed = 0;
 299
 300         }
 301         return 1;
 302 }
 303
 304 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 305 {
 306         struct cx231xx_dmaqueue *dma_q = urb->context;
 307         unsigned char *p_buffer;
 308         u32 bytes_parsed = 0, buffer_size = 0;
 309         u8 sav_eav = 0;
 310
 311         if (!dev)
 312                 return 0;
 313
 314         if (dev->state & DEV_DISCONNECTED)
 315                 return 0;
 316
 317         if (urb->status < 0) {
 318                 print_err_status(dev, -1, urb->status);
 319                 if (urb->status == -ENOENT)
 320                         return 0;
 321         }
 322
 323         if (1) {
 324
 325                 /*  get buffer pointer and length */
 326                 p_buffer = urb->transfer_buffer;
 327                 buffer_size = urb->actual_length;
 328                 bytes_parsed = 0;
 329
 330                 if (dma_q->is_partial_line) {
 331                         /* Handle the case of a partial line */
 332                         sav_eav = dma_q->last_sav;
 333                 } else {
 334                         /* Check for a SAV/EAV overlapping
 335                                 the buffer boundary */
 336                         sav_eav =
 337                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 338                                                           dma_q->partial_buf,
 339                                                           &bytes_parsed);
 340                 }
 341
 342                 sav_eav &= 0xF0;
 343                 /* Get the first line if we have some portion of an SAV/EAV from
 344                    the last buffer or a partial line  */
 345                 if (sav_eav) {
 346                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 347                                 sav_eav,        /* SAV/EAV */
 348                                 p_buffer + bytes_parsed,        /* p_buffer */
 349                                 buffer_size - bytes_parsed);/* buf size */
 350                 }
 351
 352                 /* Now parse data that is completely in this buffer */
 353                 /* dma_q->is_partial_line = 0;  */
 354
 355                 while (bytes_parsed < buffer_size) {
 356                         u32 bytes_used = 0;
 357
 358                         sav_eav = cx231xx_find_next_SAV_EAV(
 359                                 p_buffer + bytes_parsed,        /* p_buffer */
 360                                 buffer_size - bytes_parsed,     /* buf size */
 361                                 &bytes_used);/* bytes used to get SAV/EAV */
 362
 363                         bytes_parsed += bytes_used;
 364
 365                         sav_eav &= 0xF0;
 366                         if (sav_eav && (bytes_parsed < buffer_size)) {
 367                                 bytes_parsed += cx231xx_get_video_line(dev,
 368                                         dma_q, sav_eav, /* SAV/EAV */
 369                                         p_buffer + bytes_parsed,/* p_buffer */
 370                                         buffer_size - bytes_parsed);/*buf size*/
 371                         }
 372                 }
 373
 374                 /* Save the last four bytes of the buffer so we can check the
 375                    buffer boundary condition next time */
 376                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 377                 bytes_parsed = 0;
 378
 379         }
 380         return 1;
 381 }
 382
 383
 384 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 385                                  u32 *p_bytes_used)
 386 {
 387         u32 bytes_used;
 388         u8 boundary_bytes[8];
 389         u8 sav_eav = 0;
 390
 391         *p_bytes_used = 0;
 392
 393         /* Create an array of the last 4 bytes of the last buffer and the first
 394            4 bytes of the current buffer. */
 395
 396         memcpy(boundary_bytes, partial_buf, 4);
 397         memcpy(boundary_bytes + 4, p_buffer, 4);
 398
 399         /* Check for the SAV/EAV in the boundary buffer */
 400         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 401                                             &bytes_used);
 402
 403         if (sav_eav) {
 404                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 405                    only those used in the new buffer */
 406                 *p_bytes_used = bytes_used - 4;
 407         }
 408
 409         return sav_eav;
 410 }
 411
 412 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 413 {
 414         u32 i;
 415         u8 sav_eav = 0;
 416
 417         /*
 418          * Don't search if the buffer size is less than 4.  It causes a page
 419          * fault since buffer_size - 4 evaluates to a large number in that
 420          * case.
 421          */
 422         if (buffer_size < 4) {
 423                 *p_bytes_used = buffer_size;
 424                 return 0;
 425         }
 426
 427         for (i = 0; i < (buffer_size - 3); i++) {
 428
 429                 if ((p_buffer[i] == 0xFF) &&
 430                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 431
 432                         *p_bytes_used = i + 4;
 433                         sav_eav = p_buffer[i + 3];
 434                         return sav_eav;
 435                 }
 436         }
 437
 438         *p_bytes_used = buffer_size;
 439         return 0;
 440 }
 441
 442 u32 cx231xx_get_video_line(struct cx231xx *dev,
 443                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 444                            u8 *p_buffer, u32 buffer_size)
 445 {
 446         u32 bytes_copied = 0;
 447         int current_field = -1;
 448
 449         switch (sav_eav) {
 450         case SAV_ACTIVE_VIDEO_FIELD1:
 451                 /* looking for skipped line which occurred in PAL 720x480 mode.
 452                    In this case, there will be no active data contained
 453                    between the SAV and EAV */
 454                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 455                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 456                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 457                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 458                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 459                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 460                         return bytes_copied;
 461                 current_field = 1;
 462                 break;
 463
 464         case SAV_ACTIVE_VIDEO_FIELD2:
 465                 /* looking for skipped line which occurred in PAL 720x480 mode.
 466                    In this case, there will be no active data contained between
 467                    the SAV and EAV */
 468                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 469                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 470                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 471                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 472                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 473                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 474                         return bytes_copied;
 475                 current_field = 2;
 476                 break;
 477         }
 478
 479         dma_q->last_sav = sav_eav;
 480
 481         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 482                                                buffer_size, current_field);
 483
 484         return bytes_copied;
 485 }
 486
 487 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 488                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 489                             u32 length, int field_number)
 490 {
 491         u32 bytes_to_copy;
 492         struct cx231xx_buffer *buf;
 493         u32 _line_size = dev->width * 2;
 494
 495         if (dma_q->current_field != field_number)
 496                 cx231xx_reset_video_buffer(dev, dma_q);
 497
 498         /* get the buffer pointer */
 499         if (dev->USE_ISO)
 500                 buf = dev->video_mode.isoc_ctl.buf;
 501         else
 502                 buf = dev->video_mode.bulk_ctl.buf;
 503
 504         /* Remember the field number for next time */
 505         dma_q->current_field = field_number;
 506
 507         bytes_to_copy = dma_q->bytes_left_in_line;
 508         if (bytes_to_copy > length)
 509                 bytes_to_copy = length;
 510
 511         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 512                 dma_q->bytes_left_in_line -= bytes_to_copy;
 513                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 514                                           0 : 1;
 515                 return 0;
 516         }
 517
 518         dma_q->is_partial_line = 1;
 519
 520         /* If we don't have a buffer, just return the number of bytes we would
 521            have copied if we had a buffer. */
 522         if (!buf) {
 523                 dma_q->bytes_left_in_line -= bytes_to_copy;
 524                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 525                                          ? 0 : 1;
 526                 return bytes_to_copy;
 527         }
 528
 529         /* copy the data to video buffer */
 530         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 531
 532         dma_q->pos += bytes_to_copy;
 533         dma_q->bytes_left_in_line -= bytes_to_copy;
 534
 535         if (dma_q->bytes_left_in_line == 0) {
 536                 dma_q->bytes_left_in_line = _line_size;
 537                 dma_q->lines_completed++;
 538                 dma_q->is_partial_line = 0;
 539
 540                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 541                         buffer_filled(dev, dma_q, buf);
 542
 543                         dma_q->pos = 0;
 544                         buf = NULL;
 545                         dma_q->lines_completed = 0;
 546                 }
 547         }
 548
 549         return bytes_to_copy;
 550 }
 551
 552 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 553                                 struct cx231xx_dmaqueue *dma_q)
 554 {
 555         struct cx231xx_buffer *buf;
 556
 557         /* handle the switch from field 1 to field 2 */
 558         if (dma_q->current_field == 1) {
 559                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 560                         dma_q->field1_done = 1;
 561                 else
 562                         dma_q->field1_done = 0;
 563         }
 564
 565         if (dev->USE_ISO)
 566                 buf = dev->video_mode.isoc_ctl.buf;
 567         else
 568                 buf = dev->video_mode.bulk_ctl.buf;
 569
 570         if (buf == NULL) {
 571                 /* first try to get the buffer */
 572                 get_next_buf(dma_q, &buf);
 573
 574                 dma_q->pos = 0;
 575                 dma_q->field1_done = 0;
 576                 dma_q->current_field = -1;
 577         }
 578
 579         /* reset the counters */
 580         dma_q->bytes_left_in_line = dev->width << 1;
 581         dma_q->lines_completed = 0;
 582 }
 583
 584 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 585                     u8 *p_buffer, u32 bytes_to_copy)
 586 {
 587         u8 *p_out_buffer = NULL;
 588         u32 current_line_bytes_copied = 0;
 589         struct cx231xx_buffer *buf;
 590         u32 _line_size = dev->width << 1;
 591         void *startwrite;
 592         int offset, lencopy;
 593
 594         if (dev->USE_ISO)
 595                 buf = dev->video_mode.isoc_ctl.buf;
 596         else
 597                 buf = dev->video_mode.bulk_ctl.buf;
 598
 599         if (buf == NULL)
 600                 return -1;
 601
 602         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 603
 604         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 605
 606         /* Offset field 2 one line from the top of the buffer */
 607         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 608
 609         /* Offset for field 2 */
 610         startwrite = p_out_buffer + offset;
 611
 612         /* lines already completed in the current field */
 613         startwrite += (dma_q->lines_completed * _line_size * 2);
 614
 615         /* bytes already completed in the current line */
 616         startwrite += current_line_bytes_copied;
 617
 618         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 619                   bytes_to_copy : dma_q->bytes_left_in_line;
 620
 621         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 622                 return 0;
 623
 624         /* The below copies the UYVY data straight into video buffer */
 625         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 626
 627         return 0;
 628 }
 629
 630 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 631 {
 632         u16 i;
 633
 634         if (len <= 0)
 635                 return;
 636
 637         for (i = 0; i < len / 2; i++)
 638                 to[i] = (from[i] << 8) | (from[i] >> 8);
 639 }
 640
 641 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 642 {
 643         u8 buffer_complete = 0;
 644
 645         /* Dual field stream */
 646         buffer_complete = ((dma_q->current_field == 2) &&
 647                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 648                             dma_q->field1_done);
 649
 650         return buffer_complete;
 651 }
 652
 653 /* ------------------------------------------------------------------
 654         Videobuf operations
 655    ------------------------------------------------------------------*/
 656
 657 static int
 658 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 659 {
 660         struct cx231xx_fh *fh = vq->priv_data;
 661         struct cx231xx *dev = fh->dev;
 662
 663         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 664         if (0 == *count)
 665                 *count = CX231XX_DEF_BUF;
 666
 667         if (*count < CX231XX_MIN_BUF)
 668                 *count = CX231XX_MIN_BUF;
 669
 670         return 0;
 671 }
 672
 673 /* This is called *without* dev->slock held; please keep it that way */
 674 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 675 {
 676         struct cx231xx_fh *fh = vq->priv_data;
 677         struct cx231xx *dev = fh->dev;
 678         unsigned long flags = 0;
 679
 680         if (in_interrupt())
 681                 BUG();
 682
 683         /* We used to wait for the buffer to finish here, but this didn't work
 684            because, as we were keeping the state as VIDEOBUF_QUEUED,
 685            videobuf_queue_cancel marked it as finished for us.
 686            (Also, it could wedge forever if the hardware was misconfigured.)
 687
 688            This should be safe; by the time we get here, the buffer isn't
 689            queued anymore. If we ever start marking the buffers as
 690            VIDEOBUF_ACTIVE, it won't be, though.
 691          */
 692         spin_lock_irqsave(&dev->video_mode.slock, flags);
 693         if (dev->USE_ISO) {
 694                 if (dev->video_mode.isoc_ctl.buf == buf)
 695                         dev->video_mode.isoc_ctl.buf = NULL;
 696         } else {
 697                 if (dev->video_mode.bulk_ctl.buf == buf)
 698                         dev->video_mode.bulk_ctl.buf = NULL;
 699         }
 700         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 701
 702         videobuf_vmalloc_free(&buf->vb);
 703         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 704 }
 705
 706 static int
 707 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 708                enum v4l2_field field)
 709 {
 710         struct cx231xx_fh *fh = vq->priv_data;
 711         struct cx231xx_buffer *buf =
 712             container_of(vb, struct cx231xx_buffer, vb);
 713         struct cx231xx *dev = fh->dev;
 714         int rc = 0, urb_init = 0;
 715
 716         /* The only currently supported format is 16 bits/pixel */
 717         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 718                         + 7) >> 3;
 719         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 720                 return -EINVAL;
 721
 722         buf->vb.width = dev->width;
 723         buf->vb.height = dev->height;
 724         buf->vb.field = field;
 725
 726         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 727                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 728                 if (rc < 0)
 729                         goto fail;
 730         }
 731
 732         if (dev->USE_ISO) {
 733                 if (!dev->video_mode.isoc_ctl.num_bufs)
 734                         urb_init = 1;
 735         } else {
 736                 if (!dev->video_mode.bulk_ctl.num_bufs)
 737                         urb_init = 1;
 738         }
 739         dev_dbg(dev->dev,
 740                 "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 741                 urb_init, dev->video_mode.max_pkt_size);
 742         if (urb_init) {
 743                 dev->mode_tv = 0;
 744                 if (dev->USE_ISO)
 745                         rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 746                                        CX231XX_NUM_BUFS,
 747                                        dev->video_mode.max_pkt_size,
 748                                        cx231xx_isoc_copy);
 749                 else
 750                         rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 751                                        CX231XX_NUM_BUFS,
 752                                        dev->video_mode.max_pkt_size,
 753                                        cx231xx_bulk_copy);
 754                 if (rc < 0)
 755                         goto fail;
 756         }
 757
 758         buf->vb.state = VIDEOBUF_PREPARED;
 759         return 0;
 760
 761 fail:
 762         free_buffer(vq, buf);
 763         return rc;
 764 }
 765
 766 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 767 {
 768         struct cx231xx_buffer *buf =
 769             container_of(vb, struct cx231xx_buffer, vb);
 770         struct cx231xx_fh *fh = vq->priv_data;
 771         struct cx231xx *dev = fh->dev;
 772         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 773
 774         buf->vb.state = VIDEOBUF_QUEUED;
 775         list_add_tail(&buf->vb.queue, &vidq->active);
 776
 777 }
 778
 779 static void buffer_release(struct videobuf_queue *vq,
 780                            struct videobuf_buffer *vb)
 781 {
 782         struct cx231xx_buffer *buf =
 783             container_of(vb, struct cx231xx_buffer, vb);
 784         struct cx231xx_fh *fh = vq->priv_data;
 785         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 786
 787         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 788
 789         free_buffer(vq, buf);
 790 }
 791
 792 static struct videobuf_queue_ops cx231xx_video_qops = {
 793         .buf_setup = buffer_setup,
 794         .buf_prepare = buffer_prepare,
 795         .buf_queue = buffer_queue,
 796         .buf_release = buffer_release,
 797 };
 798
 799 /*********************  v4l2 interface  **************************************/
 800
 801 void video_mux(struct cx231xx *dev, int index)
 802 {
 803         dev->video_input = index;
 804         dev->ctl_ainput = INPUT(index)->amux;
 805
 806         cx231xx_set_video_input_mux(dev, index);
 807
 808         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 809
 810         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 811
 812         dev_dbg(dev->dev, "video_mux : %d\n", index);
 813
 814         /* do mode control overrides if required */
 815         cx231xx_do_mode_ctrl_overrides(dev);
 816 }
 817
 818 /* Usage lock check functions */
 819 static int res_get(struct cx231xx_fh *fh)
 820 {
 821         struct cx231xx *dev = fh->dev;
 822         int rc = 0;
 823
 824         /* This instance already has stream_on */
 825         if (fh->stream_on)
 826                 return rc;
 827
 828         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 829                 if (dev->stream_on)
 830                         return -EBUSY;
 831                 dev->stream_on = 1;
 832         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 833                 if (dev->vbi_stream_on)
 834                         return -EBUSY;
 835                 dev->vbi_stream_on = 1;
 836         } else
 837                 return -EINVAL;
 838
 839         fh->stream_on = 1;
 840
 841         return rc;
 842 }
 843
 844 static int res_check(struct cx231xx_fh *fh)
 845 {
 846         return fh->stream_on;
 847 }
 848
 849 static void res_free(struct cx231xx_fh *fh)
 850 {
 851         struct cx231xx *dev = fh->dev;
 852
 853         fh->stream_on = 0;
 854
 855         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 856                 dev->stream_on = 0;
 857         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 858                 dev->vbi_stream_on = 0;
 859 }
 860
 861 static int check_dev(struct cx231xx *dev)
 862 {
 863         if (dev->state & DEV_DISCONNECTED) {
 864                 dev_err(dev->dev, "v4l2 ioctl: device not present\n");
 865                 return -ENODEV;
 866         }
 867         return 0;
 868 }
 869
 870 /* ------------------------------------------------------------------
 871         IOCTL vidioc handling
 872    ------------------------------------------------------------------*/
 873
 874 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 875                                 struct v4l2_format *f)
 876 {
 877         struct cx231xx_fh *fh = priv;
 878         struct cx231xx *dev = fh->dev;
 879
 880         f->fmt.pix.width = dev->width;
 881         f->fmt.pix.height = dev->height;
 882         f->fmt.pix.pixelformat = dev->format->fourcc;
 883         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 884         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 885         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 886
 887         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 888
 889         return 0;
 890 }
 891
 892 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 893 {
 894         unsigned int i;
 895
 896         for (i = 0; i < ARRAY_SIZE(format); i++)
 897                 if (format[i].fourcc == fourcc)
 898                         return &format[i];
 899
 900         return NULL;
 901 }
 902
 903 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 904                                   struct v4l2_format *f)
 905 {
 906         struct cx231xx_fh *fh = priv;
 907         struct cx231xx *dev = fh->dev;
 908         unsigned int width = f->fmt.pix.width;
 909         unsigned int height = f->fmt.pix.height;
 910         unsigned int maxw = norm_maxw(dev);
 911         unsigned int maxh = norm_maxh(dev);
 912         struct cx231xx_fmt *fmt;
 913
 914         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 915         if (!fmt) {
 916                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 917                                  f->fmt.pix.pixelformat);
 918                 return -EINVAL;
 919         }
 920
 921         /* width must even because of the YUYV format
 922            height must be even because of interlacing */
 923         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 924
 925         f->fmt.pix.width = width;
 926         f->fmt.pix.height = height;
 927         f->fmt.pix.pixelformat = fmt->fourcc;
 928         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
 929         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 930         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 931         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 932
 933         return 0;
 934 }
 935
 936 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 937                                 struct v4l2_format *f)
 938 {
 939         struct cx231xx_fh *fh = priv;
 940         struct cx231xx *dev = fh->dev;
 941         int rc;
 942         struct cx231xx_fmt *fmt;
 943         struct v4l2_mbus_framefmt mbus_fmt;
 944
 945         rc = check_dev(dev);
 946         if (rc < 0)
 947                 return rc;
 948
 949         vidioc_try_fmt_vid_cap(file, priv, f);
 950
 951         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 952         if (!fmt)
 953                 return -EINVAL;
 954
 955         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 956                 dev_err(dev->dev, "%s: queue busy\n", __func__);
 957                 return -EBUSY;
 958         }
 959
 960         if (dev->stream_on && !fh->stream_on) {
 961                 dev_err(dev->dev,
 962                         "%s: device in use by another fh\n", __func__);
 963                 return -EBUSY;
 964         }
 965
 966         /* set new image size */
 967         dev->width = f->fmt.pix.width;
 968         dev->height = f->fmt.pix.height;
 969         dev->format = fmt;
 970
 971         v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
 972         call_all(dev, video, s_mbus_fmt, &mbus_fmt);
 973         v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
 974
 975         return rc;
 976 }
 977
 978 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 979 {
 980         struct cx231xx_fh *fh = priv;
 981         struct cx231xx *dev = fh->dev;
 982
 983         *id = dev->norm;
 984         return 0;
 985 }
 986
 987 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
 988 {
 989         struct cx231xx_fh *fh = priv;
 990         struct cx231xx *dev = fh->dev;
 991         struct v4l2_mbus_framefmt mbus_fmt;
 992         int rc;
 993
 994         rc = check_dev(dev);
 995         if (rc < 0)
 996                 return rc;
 997
 998         if (dev->norm == norm)
 999                 return 0;
1000
1001         if (videobuf_queue_is_busy(&fh->vb_vidq))
1002                 return -EBUSY;
1003
1004         dev->norm = norm;
1005
1006         /* Adjusts width/height, if needed */
1007         dev->width = 720;
1008         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1009
1010         call_all(dev, video, s_std, dev->norm);
1011
1012         /* We need to reset basic properties in the decoder related to
1013            resolution (since a standard change effects things like the number
1014            of lines in VACT, etc) */
1015         memset(&mbus_fmt, 0, sizeof(mbus_fmt));
1016         mbus_fmt.code = MEDIA_BUS_FMT_FIXED;
1017         mbus_fmt.width = dev->width;
1018         mbus_fmt.height = dev->height;
1019         call_all(dev, video, s_mbus_fmt, &mbus_fmt);
1020
1021         /* do mode control overrides */
1022         cx231xx_do_mode_ctrl_overrides(dev);
1023
1024         return 0;
1025 }
1026
1027 static const char *iname[] = {
1028         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1029         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1030         [CX231XX_VMUX_TELEVISION] = "Television",
1031         [CX231XX_VMUX_CABLE]      = "Cable TV",
1032         [CX231XX_VMUX_DVB]        = "DVB",
1033         [CX231XX_VMUX_DEBUG]      = "for debug only",
1034 };
1035
1036 int cx231xx_enum_input(struct file *file, void *priv,
1037                              struct v4l2_input *i)
1038 {
1039         struct cx231xx_fh *fh = priv;
1040         struct cx231xx *dev = fh->dev;
1041         u32 gen_stat;
1042         unsigned int ret, n;
1043
1044         n = i->index;
1045         if (n >= MAX_CX231XX_INPUT)
1046                 return -EINVAL;
1047         if (0 == INPUT(n)->type)
1048                 return -EINVAL;
1049
1050         i->index = n;
1051         i->type = V4L2_INPUT_TYPE_CAMERA;
1052
1053         strcpy(i->name, iname[INPUT(n)->type]);
1054
1055         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1056             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1057                 i->type = V4L2_INPUT_TYPE_TUNER;
1058
1059         i->std = dev->vdev->tvnorms;
1060
1061         /* If they are asking about the active input, read signal status */
1062         if (n == dev->video_input) {
1063                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1064                                             GEN_STAT, 2, &gen_stat, 4);
1065                 if (ret > 0) {
1066                         if ((gen_stat & FLD_VPRES) == 0x00)
1067                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1068                         if ((gen_stat & FLD_HLOCK) == 0x00)
1069                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1070                 }
1071         }
1072
1073         return 0;
1074 }
1075
1076 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1077 {
1078         struct cx231xx_fh *fh = priv;
1079         struct cx231xx *dev = fh->dev;
1080
1081         *i = dev->video_input;
1082
1083         return 0;
1084 }
1085
1086 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1087 {
1088         struct cx231xx_fh *fh = priv;
1089         struct cx231xx *dev = fh->dev;
1090         int rc;
1091
1092         dev->mode_tv = 0;
1093         rc = check_dev(dev);
1094         if (rc < 0)
1095                 return rc;
1096
1097         if (i >= MAX_CX231XX_INPUT)
1098                 return -EINVAL;
1099         if (0 == INPUT(i)->type)
1100                 return -EINVAL;
1101
1102         video_mux(dev, i);
1103
1104         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1105             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1106                 /* There's a tuner, so reset the standard and put it on the
1107                    last known frequency (since it was probably powered down
1108                    until now */
1109                 call_all(dev, video, s_std, dev->norm);
1110         }
1111
1112         return 0;
1113 }
1114
1115 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1116 {
1117         struct cx231xx_fh *fh = priv;
1118         struct cx231xx *dev = fh->dev;
1119         int rc;
1120
1121         rc = check_dev(dev);
1122         if (rc < 0)
1123                 return rc;
1124
1125         if (0 != t->index)
1126                 return -EINVAL;
1127
1128         strcpy(t->name, "Tuner");
1129
1130         t->type = V4L2_TUNER_ANALOG_TV;
1131         t->capability = V4L2_TUNER_CAP_NORM;
1132         t->rangehigh = 0xffffffffUL;
1133         t->signal = 0xffff;     /* LOCKED */
1134         call_all(dev, tuner, g_tuner, t);
1135
1136         return 0;
1137 }
1138
1139 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1140 {
1141         struct cx231xx_fh *fh = priv;
1142         struct cx231xx *dev = fh->dev;
1143         int rc;
1144
1145         rc = check_dev(dev);
1146         if (rc < 0)
1147                 return rc;
1148
1149         if (0 != t->index)
1150                 return -EINVAL;
1151 #if 0
1152         call_all(dev, tuner, s_tuner, t);
1153 #endif
1154         return 0;
1155 }
1156
1157 int cx231xx_g_frequency(struct file *file, void *priv,
1158                               struct v4l2_frequency *f)
1159 {
1160         struct cx231xx_fh *fh = priv;
1161         struct cx231xx *dev = fh->dev;
1162
1163         if (f->tuner)
1164                 return -EINVAL;
1165
1166         f->frequency = dev->ctl_freq;
1167
1168         return 0;
1169 }
1170
1171 int cx231xx_s_frequency(struct file *file, void *priv,
1172                               const struct v4l2_frequency *f)
1173 {
1174         struct cx231xx_fh *fh = priv;
1175         struct cx231xx *dev = fh->dev;
1176         struct v4l2_frequency new_freq = *f;
1177         int rc;
1178         u32 if_frequency = 5400000;
1179
1180         dev_dbg(dev->dev,
1181                 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1182                 f->frequency, f->type);
1183
1184         rc = check_dev(dev);
1185         if (rc < 0)
1186                 return rc;
1187
1188         if (0 != f->tuner)
1189                 return -EINVAL;
1190
1191         /* set pre channel change settings in DIF first */
1192         rc = cx231xx_tuner_pre_channel_change(dev);
1193
1194         call_all(dev, tuner, s_frequency, f);
1195         call_all(dev, tuner, g_frequency, &new_freq);
1196         dev->ctl_freq = new_freq.frequency;
1197
1198         /* set post channel change settings in DIF first */
1199         rc = cx231xx_tuner_post_channel_change(dev);
1200
1201         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1202                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1203                         if_frequency = 5400000;  /*5.4MHz       */
1204                 else if (dev->norm & V4L2_STD_B)
1205                         if_frequency = 6000000;  /*6.0MHz       */
1206                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1207                         if_frequency = 6900000;  /*6.9MHz       */
1208                 else if (dev->norm & V4L2_STD_GH)
1209                         if_frequency = 7100000;  /*7.1MHz       */
1210                 else if (dev->norm & V4L2_STD_PAL_I)
1211                         if_frequency = 7250000;  /*7.25MHz      */
1212                 else if (dev->norm & V4L2_STD_SECAM_L)
1213                         if_frequency = 6900000;  /*6.9MHz       */
1214                 else if (dev->norm & V4L2_STD_SECAM_LC)
1215                         if_frequency = 1250000;  /*1.25MHz      */
1216
1217                 dev_dbg(dev->dev,
1218                         "if_frequency is set to %d\n", if_frequency);
1219                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1220
1221                 update_HH_register_after_set_DIF(dev);
1222         }
1223
1224         dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1225
1226         return rc;
1227 }
1228
1229 #ifdef CONFIG_VIDEO_ADV_DEBUG
1230
1231 int cx231xx_g_chip_info(struct file *file, void *fh,
1232                         struct v4l2_dbg_chip_info *chip)
1233 {
1234         switch (chip->match.addr) {
1235         case 0: /* Cx231xx - internal registers */
1236                 return 0;
1237         case 1: /* AFE - read byte */
1238                 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1239                 return 0;
1240         case 2: /* Video Block - read byte */
1241                 strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1242                 return 0;
1243         case 3: /* I2S block - read byte */
1244                 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1245                 return 0;
1246         case 4: /* AFE - read dword */
1247                 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1248                 return 0;
1249         case 5: /* Video Block - read dword */
1250                 strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1251                 return 0;
1252         case 6: /* I2S Block - read dword */
1253                 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1254                 return 0;
1255         }
1256         return -EINVAL;
1257 }
1258
1259 int cx231xx_g_register(struct file *file, void *priv,
1260                              struct v4l2_dbg_register *reg)
1261 {
1262         struct cx231xx_fh *fh = priv;
1263         struct cx231xx *dev = fh->dev;
1264         int ret;
1265         u8 value[4] = { 0, 0, 0, 0 };
1266         u32 data = 0;
1267
1268         switch (reg->match.addr) {
1269         case 0: /* Cx231xx - internal registers */
1270                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1271                                 (u16)reg->reg, value, 4);
1272                 reg->val = value[0] | value[1] << 8 |
1273                         value[2] << 16 | value[3] << 24;
1274                 reg->size = 4;
1275                 break;
1276         case 1: /* AFE - read byte */
1277                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1278                                 (u16)reg->reg, 2, &data, 1);
1279                 reg->val = data;
1280                 reg->size = 1;
1281                 break;
1282         case 2: /* Video Block - read byte */
1283                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1284                                 (u16)reg->reg, 2, &data, 1);
1285                 reg->val = data;
1286                 reg->size = 1;
1287                 break;
1288         case 3: /* I2S block - read byte */
1289                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1290                                 (u16)reg->reg, 1, &data, 1);
1291                 reg->val = data;
1292                 reg->size = 1;
1293                 break;
1294         case 4: /* AFE - read dword */
1295                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1296                                 (u16)reg->reg, 2, &data, 4);
1297                 reg->val = data;
1298                 reg->size = 4;
1299                 break;
1300         case 5: /* Video Block - read dword */
1301                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1302                                 (u16)reg->reg, 2, &data, 4);
1303                 reg->val = data;
1304                 reg->size = 4;
1305                 break;
1306         case 6: /* I2S Block - read dword */
1307                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1308                                 (u16)reg->reg, 1, &data, 4);
1309                 reg->val = data;
1310                 reg->size = 4;
1311                 break;
1312         default:
1313                 return -EINVAL;
1314         }
1315         return ret < 0 ? ret : 0;
1316 }
1317
1318 int cx231xx_s_register(struct file *file, void *priv,
1319                              const struct v4l2_dbg_register *reg)
1320 {
1321         struct cx231xx_fh *fh = priv;
1322         struct cx231xx *dev = fh->dev;
1323         int ret;
1324         u8 data[4] = { 0, 0, 0, 0 };
1325
1326         switch (reg->match.addr) {
1327         case 0: /* cx231xx internal registers */
1328                 data[0] = (u8) reg->val;
1329                 data[1] = (u8) (reg->val >> 8);
1330                 data[2] = (u8) (reg->val >> 16);
1331                 data[3] = (u8) (reg->val >> 24);
1332                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1333                                 (u16)reg->reg, data, 4);
1334                 break;
1335         case 1: /* AFE - write byte */
1336                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1337                                 (u16)reg->reg, 2, reg->val, 1);
1338                 break;
1339         case 2: /* Video Block - write byte */
1340                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1341                                 (u16)reg->reg, 2, reg->val, 1);
1342                 break;
1343         case 3: /* I2S block - write byte */
1344                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1345                                 (u16)reg->reg, 1, reg->val, 1);
1346                 break;
1347         case 4: /* AFE - write dword */
1348                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1349                                 (u16)reg->reg, 2, reg->val, 4);
1350                 break;
1351         case 5: /* Video Block - write dword */
1352                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1353                                 (u16)reg->reg, 2, reg->val, 4);
1354                 break;
1355         case 6: /* I2S block - write dword */
1356                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1357                                 (u16)reg->reg, 1, reg->val, 4);
1358                 break;
1359         default:
1360                 return -EINVAL;
1361         }
1362         return ret < 0 ? ret : 0;
1363 }
1364 #endif
1365
1366 static int vidioc_cropcap(struct file *file, void *priv,
1367                           struct v4l2_cropcap *cc)
1368 {
1369         struct cx231xx_fh *fh = priv;
1370         struct cx231xx *dev = fh->dev;
1371
1372         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1373                 return -EINVAL;
1374
1375         cc->bounds.left = 0;
1376         cc->bounds.top = 0;
1377         cc->bounds.width = dev->width;
1378         cc->bounds.height = dev->height;
1379         cc->defrect = cc->bounds;
1380         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1381         cc->pixelaspect.denominator = 59;
1382
1383         return 0;
1384 }
1385
1386 static int vidioc_streamon(struct file *file, void *priv,
1387                            enum v4l2_buf_type type)
1388 {
1389         struct cx231xx_fh *fh = priv;
1390         struct cx231xx *dev = fh->dev;
1391         int rc;
1392
1393         rc = check_dev(dev);
1394         if (rc < 0)
1395                 return rc;
1396
1397         rc = res_get(fh);
1398
1399         if (likely(rc >= 0))
1400                 rc = videobuf_streamon(&fh->vb_vidq);
1401
1402         call_all(dev, video, s_stream, 1);
1403
1404         return rc;
1405 }
1406
1407 static int vidioc_streamoff(struct file *file, void *priv,
1408                             enum v4l2_buf_type type)
1409 {
1410         struct cx231xx_fh *fh = priv;
1411         struct cx231xx *dev = fh->dev;
1412         int rc;
1413
1414         rc = check_dev(dev);
1415         if (rc < 0)
1416                 return rc;
1417
1418         if (type != fh->type)
1419                 return -EINVAL;
1420
1421         cx25840_call(dev, video, s_stream, 0);
1422
1423         videobuf_streamoff(&fh->vb_vidq);
1424         res_free(fh);
1425
1426         return 0;
1427 }
1428
1429 int cx231xx_querycap(struct file *file, void *priv,
1430                            struct v4l2_capability *cap)
1431 {
1432         struct video_device *vdev = video_devdata(file);
1433         struct cx231xx_fh *fh = priv;
1434         struct cx231xx *dev = fh->dev;
1435
1436         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1437         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1438         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1439
1440         if (vdev->vfl_type == VFL_TYPE_RADIO)
1441                 cap->device_caps = V4L2_CAP_RADIO;
1442         else {
1443                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1444                 if (vdev->vfl_type == VFL_TYPE_VBI)
1445                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1446                 else
1447                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1448         }
1449         if (dev->tuner_type != TUNER_ABSENT)
1450                 cap->device_caps |= V4L2_CAP_TUNER;
1451         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1452                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1453                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1454         if (dev->radio_dev)
1455                 cap->capabilities |= V4L2_CAP_RADIO;
1456
1457         return 0;
1458 }
1459
1460 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1461                                    struct v4l2_fmtdesc *f)
1462 {
1463         if (unlikely(f->index >= ARRAY_SIZE(format)))
1464                 return -EINVAL;
1465
1466         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1467         f->pixelformat = format[f->index].fourcc;
1468
1469         return 0;
1470 }
1471
1472 /* RAW VBI ioctls */
1473
1474 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1475                                 struct v4l2_format *f)
1476 {
1477         struct cx231xx_fh *fh = priv;
1478         struct cx231xx *dev = fh->dev;
1479
1480         f->fmt.vbi.sampling_rate = 6750000 * 4;
1481         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1482         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1483         f->fmt.vbi.offset = 0;
1484         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1485             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1486         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1487             PAL_VBI_LINES : NTSC_VBI_LINES;
1488         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1489             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1490         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1491         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1492
1493         return 0;
1494
1495 }
1496
1497 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1498                                   struct v4l2_format *f)
1499 {
1500         struct cx231xx_fh *fh = priv;
1501         struct cx231xx *dev = fh->dev;
1502
1503         f->fmt.vbi.sampling_rate = 6750000 * 4;
1504         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1505         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1506         f->fmt.vbi.offset = 0;
1507         f->fmt.vbi.flags = 0;
1508         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1509             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1510         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1511             PAL_VBI_LINES : NTSC_VBI_LINES;
1512         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1513             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1514         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1515         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1516
1517         return 0;
1518
1519 }
1520
1521 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1522                                   struct v4l2_format *f)
1523 {
1524         struct cx231xx_fh *fh = priv;
1525         struct cx231xx *dev = fh->dev;
1526
1527         if (dev->vbi_stream_on && !fh->stream_on) {
1528                 dev_err(dev->dev,
1529                         "%s device in use by another fh\n", __func__);
1530                 return -EBUSY;
1531         }
1532         return vidioc_try_fmt_vbi_cap(file, priv, f);
1533 }
1534
1535 static int vidioc_reqbufs(struct file *file, void *priv,
1536                           struct v4l2_requestbuffers *rb)
1537 {
1538         struct cx231xx_fh *fh = priv;
1539         struct cx231xx *dev = fh->dev;
1540         int rc;
1541
1542         rc = check_dev(dev);
1543         if (rc < 0)
1544                 return rc;
1545
1546         return videobuf_reqbufs(&fh->vb_vidq, rb);
1547 }
1548
1549 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1550 {
1551         struct cx231xx_fh *fh = priv;
1552         struct cx231xx *dev = fh->dev;
1553         int rc;
1554
1555         rc = check_dev(dev);
1556         if (rc < 0)
1557                 return rc;
1558
1559         return videobuf_querybuf(&fh->vb_vidq, b);
1560 }
1561
1562 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1563 {
1564         struct cx231xx_fh *fh = priv;
1565         struct cx231xx *dev = fh->dev;
1566         int rc;
1567
1568         rc = check_dev(dev);
1569         if (rc < 0)
1570                 return rc;
1571
1572         return videobuf_qbuf(&fh->vb_vidq, b);
1573 }
1574
1575 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1576 {
1577         struct cx231xx_fh *fh = priv;
1578         struct cx231xx *dev = fh->dev;
1579         int rc;
1580
1581         rc = check_dev(dev);
1582         if (rc < 0)
1583                 return rc;
1584
1585         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1586 }
1587
1588 /* ----------------------------------------------------------- */
1589 /* RADIO ESPECIFIC IOCTLS                                      */
1590 /* ----------------------------------------------------------- */
1591
1592 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1593 {
1594         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1595
1596         if (t->index)
1597                 return -EINVAL;
1598
1599         strcpy(t->name, "Radio");
1600
1601         call_all(dev, tuner, g_tuner, t);
1602
1603         return 0;
1604 }
1605 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1606 {
1607         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1608
1609         if (t->index)
1610                 return -EINVAL;
1611
1612         call_all(dev, tuner, s_tuner, t);
1613
1614         return 0;
1615 }
1616
1617 /*
1618  * cx231xx_v4l2_open()
1619  * inits the device and starts isoc transfer
1620  */
1621 static int cx231xx_v4l2_open(struct file *filp)
1622 {
1623         int radio = 0;
1624         struct video_device *vdev = video_devdata(filp);
1625         struct cx231xx *dev = video_drvdata(filp);
1626         struct cx231xx_fh *fh;
1627         enum v4l2_buf_type fh_type = 0;
1628
1629         switch (vdev->vfl_type) {
1630         case VFL_TYPE_GRABBER:
1631                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1632                 break;
1633         case VFL_TYPE_VBI:
1634                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1635                 break;
1636         case VFL_TYPE_RADIO:
1637                 radio = 1;
1638                 break;
1639         }
1640
1641         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1642                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1643                          dev->users);
1644
1645 #if 0
1646         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1647         if (errCode < 0) {
1648                 dev_err(dev->dev,
1649                         "Device locked on digital mode. Can't open analog\n");
1650                 return -EBUSY;
1651         }
1652 #endif
1653
1654         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1655         if (!fh)
1656                 return -ENOMEM;
1657         if (mutex_lock_interruptible(&dev->lock)) {
1658                 kfree(fh);
1659                 return -ERESTARTSYS;
1660         }
1661         fh->dev = dev;
1662         fh->type = fh_type;
1663         filp->private_data = fh;
1664         v4l2_fh_init(&fh->fh, vdev);
1665
1666         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1667                 /* Power up in Analog TV mode */
1668                 if (dev->board.external_av)
1669                         cx231xx_set_power_mode(dev,
1670                                  POLARIS_AVMODE_ENXTERNAL_AV);
1671                 else
1672                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1673
1674 #if 0
1675                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1676 #endif
1677
1678                 /* set video alternate setting */
1679                 cx231xx_set_video_alternate(dev);
1680
1681                 /* Needed, since GPIO might have disabled power of
1682                    some i2c device */
1683                 cx231xx_config_i2c(dev);
1684
1685                 /* device needs to be initialized before isoc transfer */
1686                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1687
1688         }
1689         if (radio) {
1690                 cx231xx_videodbg("video_open: setting radio device\n");
1691
1692                 /* cx231xx_start_radio(dev); */
1693
1694                 call_all(dev, tuner, s_radio);
1695         }
1696
1697         dev->users++;
1698
1699         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1700                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1701                                             NULL, &dev->video_mode.slock,
1702                                             fh->type, V4L2_FIELD_INTERLACED,
1703                                             sizeof(struct cx231xx_buffer),
1704                                             fh, &dev->lock);
1705         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1706                 /* Set the required alternate setting  VBI interface works in
1707                    Bulk mode only */
1708                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1709
1710                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1711                                             NULL, &dev->vbi_mode.slock,
1712                                             fh->type, V4L2_FIELD_SEQ_TB,
1713                                             sizeof(struct cx231xx_buffer),
1714                                             fh, &dev->lock);
1715         }
1716         mutex_unlock(&dev->lock);
1717         v4l2_fh_add(&fh->fh);
1718
1719         return 0;
1720 }
1721
1722 /*
1723  * cx231xx_realease_resources()
1724  * unregisters the v4l2,i2c and usb devices
1725  * called when the device gets disconected or at module unload
1726 */
1727 void cx231xx_release_analog_resources(struct cx231xx *dev)
1728 {
1729
1730         /*FIXME: I2C IR should be disconnected */
1731
1732         if (dev->radio_dev) {
1733                 if (video_is_registered(dev->radio_dev))
1734                         video_unregister_device(dev->radio_dev);
1735                 else
1736                         video_device_release(dev->radio_dev);
1737                 dev->radio_dev = NULL;
1738         }
1739         if (dev->vbi_dev) {
1740                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1741                         video_device_node_name(dev->vbi_dev));
1742                 if (video_is_registered(dev->vbi_dev))
1743                         video_unregister_device(dev->vbi_dev);
1744                 else
1745                         video_device_release(dev->vbi_dev);
1746                 dev->vbi_dev = NULL;
1747         }
1748         if (dev->vdev) {
1749                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1750                         video_device_node_name(dev->vdev));
1751
1752                 if (dev->board.has_417)
1753                         cx231xx_417_unregister(dev);
1754
1755                 if (video_is_registered(dev->vdev))
1756                         video_unregister_device(dev->vdev);
1757                 else
1758                         video_device_release(dev->vdev);
1759                 dev->vdev = NULL;
1760         }
1761         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1762         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1763 }
1764
1765 /*
1766  * cx231xx_close()
1767  * stops streaming and deallocates all resources allocated by the v4l2
1768  * calls and ioctls
1769  */
1770 static int cx231xx_close(struct file *filp)
1771 {
1772         struct cx231xx_fh *fh = filp->private_data;
1773         struct cx231xx *dev = fh->dev;
1774
1775         cx231xx_videodbg("users=%d\n", dev->users);
1776
1777         cx231xx_videodbg("users=%d\n", dev->users);
1778         if (res_check(fh))
1779                 res_free(fh);
1780
1781         /*
1782          * To workaround error number=-71 on EP0 for VideoGrabber,
1783          *       need exclude following.
1784          * FIXME: It is probably safe to remove most of these, as we're
1785          * now avoiding the alternate setting for INDEX_VANC
1786          */
1787         if (!dev->board.no_alt_vanc)
1788                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1789                         videobuf_stop(&fh->vb_vidq);
1790                         videobuf_mmap_free(&fh->vb_vidq);
1791
1792                         /* the device is already disconnect,
1793                            free the remaining resources */
1794                         if (dev->state & DEV_DISCONNECTED) {
1795                                 if (atomic_read(&dev->devlist_count) > 0) {
1796                                         cx231xx_release_resources(dev);
1797                                         fh->dev = NULL;
1798                                         return 0;
1799                                 }
1800                                 return 0;
1801                         }
1802
1803                         /* do this before setting alternate! */
1804                         cx231xx_uninit_vbi_isoc(dev);
1805
1806                         /* set alternate 0 */
1807                         if (!dev->vbi_or_sliced_cc_mode)
1808                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1809                         else
1810                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1811
1812                         v4l2_fh_del(&fh->fh);
1813                         v4l2_fh_exit(&fh->fh);
1814                         kfree(fh);
1815                         dev->users--;
1816                         wake_up_interruptible_nr(&dev->open, 1);
1817                         return 0;
1818                 }
1819
1820         v4l2_fh_del(&fh->fh);
1821         dev->users--;
1822         if (!dev->users) {
1823                 videobuf_stop(&fh->vb_vidq);
1824                 videobuf_mmap_free(&fh->vb_vidq);
1825
1826                 /* the device is already disconnect,
1827                    free the remaining resources */
1828                 if (dev->state & DEV_DISCONNECTED) {
1829                         cx231xx_release_resources(dev);
1830                         fh->dev = NULL;
1831                         return 0;
1832                 }
1833
1834                 /* Save some power by putting tuner to sleep */
1835                 call_all(dev, core, s_power, 0);
1836
1837                 /* do this before setting alternate! */
1838                 if (dev->USE_ISO)
1839                         cx231xx_uninit_isoc(dev);
1840                 else
1841                         cx231xx_uninit_bulk(dev);
1842                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1843
1844                 /* set alternate 0 */
1845                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1846         }
1847         v4l2_fh_exit(&fh->fh);
1848         kfree(fh);
1849         wake_up_interruptible_nr(&dev->open, 1);
1850         return 0;
1851 }
1852
1853 static int cx231xx_v4l2_close(struct file *filp)
1854 {
1855         struct cx231xx_fh *fh = filp->private_data;
1856         struct cx231xx *dev = fh->dev;
1857         int rc;
1858
1859         mutex_lock(&dev->lock);
1860         rc = cx231xx_close(filp);
1861         mutex_unlock(&dev->lock);
1862         return rc;
1863 }
1864
1865 /*
1866  * cx231xx_v4l2_read()
1867  * will allocate buffers when called for the first time
1868  */
1869 static ssize_t
1870 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1871                   loff_t *pos)
1872 {
1873         struct cx231xx_fh *fh = filp->private_data;
1874         struct cx231xx *dev = fh->dev;
1875         int rc;
1876
1877         rc = check_dev(dev);
1878         if (rc < 0)
1879                 return rc;
1880
1881         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1882             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1883                 rc = res_get(fh);
1884
1885                 if (unlikely(rc < 0))
1886                         return rc;
1887
1888                 if (mutex_lock_interruptible(&dev->lock))
1889                         return -ERESTARTSYS;
1890                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1891                                             filp->f_flags & O_NONBLOCK);
1892                 mutex_unlock(&dev->lock);
1893                 return rc;
1894         }
1895         return 0;
1896 }
1897
1898 /*
1899  * cx231xx_v4l2_poll()
1900  * will allocate buffers when called for the first time
1901  */
1902 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
1903 {
1904         unsigned long req_events = poll_requested_events(wait);
1905         struct cx231xx_fh *fh = filp->private_data;
1906         struct cx231xx *dev = fh->dev;
1907         unsigned res = 0;
1908         int rc;
1909
1910         rc = check_dev(dev);
1911         if (rc < 0)
1912                 return POLLERR;
1913
1914         rc = res_get(fh);
1915
1916         if (unlikely(rc < 0))
1917                 return POLLERR;
1918
1919         if (v4l2_event_pending(&fh->fh))
1920                 res |= POLLPRI;
1921         else
1922                 poll_wait(filp, &fh->fh.wait, wait);
1923
1924         if (!(req_events & (POLLIN | POLLRDNORM)))
1925                 return res;
1926
1927         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
1928             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
1929                 mutex_lock(&dev->lock);
1930                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1931                 mutex_unlock(&dev->lock);
1932                 return res;
1933         }
1934         return res | POLLERR;
1935 }
1936
1937 /*
1938  * cx231xx_v4l2_mmap()
1939  */
1940 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1941 {
1942         struct cx231xx_fh *fh = filp->private_data;
1943         struct cx231xx *dev = fh->dev;
1944         int rc;
1945
1946         rc = check_dev(dev);
1947         if (rc < 0)
1948                 return rc;
1949
1950         rc = res_get(fh);
1951
1952         if (unlikely(rc < 0))
1953                 return rc;
1954
1955         if (mutex_lock_interruptible(&dev->lock))
1956                 return -ERESTARTSYS;
1957         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1958         mutex_unlock(&dev->lock);
1959
1960         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1961                          (unsigned long)vma->vm_start,
1962                          (unsigned long)vma->vm_end -
1963                          (unsigned long)vma->vm_start, rc);
1964
1965         return rc;
1966 }
1967
1968 static const struct v4l2_file_operations cx231xx_v4l_fops = {
1969         .owner   = THIS_MODULE,
1970         .open    = cx231xx_v4l2_open,
1971         .release = cx231xx_v4l2_close,
1972         .read    = cx231xx_v4l2_read,
1973         .poll    = cx231xx_v4l2_poll,
1974         .mmap    = cx231xx_v4l2_mmap,
1975         .unlocked_ioctl   = video_ioctl2,
1976 };
1977
1978 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1979         .vidioc_querycap               = cx231xx_querycap,
1980         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
1981         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
1982         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
1983         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
1984         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
1985         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
1986         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
1987         .vidioc_cropcap                = vidioc_cropcap,
1988         .vidioc_reqbufs                = vidioc_reqbufs,
1989         .vidioc_querybuf               = vidioc_querybuf,
1990         .vidioc_qbuf                   = vidioc_qbuf,
1991         .vidioc_dqbuf                  = vidioc_dqbuf,
1992         .vidioc_s_std                  = vidioc_s_std,
1993         .vidioc_g_std                  = vidioc_g_std,
1994         .vidioc_enum_input             = cx231xx_enum_input,
1995         .vidioc_g_input                = cx231xx_g_input,
1996         .vidioc_s_input                = cx231xx_s_input,
1997         .vidioc_streamon               = vidioc_streamon,
1998         .vidioc_streamoff              = vidioc_streamoff,
1999         .vidioc_g_tuner                = cx231xx_g_tuner,
2000         .vidioc_s_tuner                = cx231xx_s_tuner,
2001         .vidioc_g_frequency            = cx231xx_g_frequency,
2002         .vidioc_s_frequency            = cx231xx_s_frequency,
2003 #ifdef CONFIG_VIDEO_ADV_DEBUG
2004         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2005         .vidioc_g_register             = cx231xx_g_register,
2006         .vidioc_s_register             = cx231xx_s_register,
2007 #endif
2008         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2009         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2010 };
2011
2012 static struct video_device cx231xx_vbi_template;
2013
2014 static const struct video_device cx231xx_video_template = {
2015         .fops         = &cx231xx_v4l_fops,
2016         .release      = video_device_release,
2017         .ioctl_ops    = &video_ioctl_ops,
2018         .tvnorms      = V4L2_STD_ALL,
2019 };
2020
2021 static const struct v4l2_file_operations radio_fops = {
2022         .owner   = THIS_MODULE,
2023         .open   = cx231xx_v4l2_open,
2024         .release = cx231xx_v4l2_close,
2025         .poll = v4l2_ctrl_poll,
2026         .unlocked_ioctl = video_ioctl2,
2027 };
2028
2029 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2030         .vidioc_querycap    = cx231xx_querycap,
2031         .vidioc_g_tuner     = radio_g_tuner,
2032         .vidioc_s_tuner     = radio_s_tuner,
2033         .vidioc_g_frequency = cx231xx_g_frequency,
2034         .vidioc_s_frequency = cx231xx_s_frequency,
2035 #ifdef CONFIG_VIDEO_ADV_DEBUG
2036         .vidioc_g_chip_info = cx231xx_g_chip_info,
2037         .vidioc_g_register  = cx231xx_g_register,
2038         .vidioc_s_register  = cx231xx_s_register,
2039 #endif
2040         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2041         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2042 };
2043
2044 static struct video_device cx231xx_radio_template = {
2045         .name      = "cx231xx-radio",
2046         .fops      = &radio_fops,
2047         .ioctl_ops = &radio_ioctl_ops,
2048 };
2049
2050 /******************************** usb interface ******************************/
2051
2052 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2053                 const struct video_device
2054                 *template, const char *type_name)
2055 {
2056         struct video_device *vfd;
2057
2058         vfd = video_device_alloc();
2059         if (NULL == vfd)
2060                 return NULL;
2061
2062         *vfd = *template;
2063         vfd->v4l2_dev = &dev->v4l2_dev;
2064         vfd->release = video_device_release;
2065         vfd->debug = video_debug;
2066         vfd->lock = &dev->lock;
2067
2068         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2069
2070         video_set_drvdata(vfd, dev);
2071         if (dev->tuner_type == TUNER_ABSENT) {
2072                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2073                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2074                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2075                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2076         }
2077         return vfd;
2078 }
2079
2080 int cx231xx_register_analog_devices(struct cx231xx *dev)
2081 {
2082         int ret;
2083
2084         dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2085
2086         /* set default norm */
2087         dev->norm = V4L2_STD_PAL;
2088         dev->width = norm_maxw(dev);
2089         dev->height = norm_maxh(dev);
2090         dev->interlaced = 0;
2091
2092         /* Analog specific initialization */
2093         dev->format = &format[0];
2094
2095         /* Set the initial input */
2096         video_mux(dev, dev->video_input);
2097
2098         call_all(dev, video, s_std, dev->norm);
2099
2100         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2101         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2102
2103         if (dev->sd_cx25840) {
2104                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2105                                 dev->sd_cx25840->ctrl_handler, NULL);
2106                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2107                                 dev->sd_cx25840->ctrl_handler,
2108                                 v4l2_ctrl_radio_filter);
2109         }
2110
2111         if (dev->ctrl_handler.error)
2112                 return dev->ctrl_handler.error;
2113         if (dev->radio_ctrl_handler.error)
2114                 return dev->radio_ctrl_handler.error;
2115
2116         /* enable vbi capturing */
2117         /* write code here...  */
2118
2119         /* allocate and fill video video_device struct */
2120         dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2121         if (!dev->vdev) {
2122                 dev_err(dev->dev, "cannot allocate video_device.\n");
2123                 return -ENODEV;
2124         }
2125
2126         dev->vdev->ctrl_handler = &dev->ctrl_handler;
2127         /* register v4l2 video video_device */
2128         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2129                                     video_nr[dev->devno]);
2130         if (ret) {
2131                 dev_err(dev->dev,
2132                         "unable to register video device (error=%i).\n",
2133                         ret);
2134                 return ret;
2135         }
2136
2137         dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2138                 video_device_node_name(dev->vdev));
2139
2140         /* Initialize VBI template */
2141         cx231xx_vbi_template = cx231xx_video_template;
2142         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2143
2144         /* Allocate and fill vbi video_device struct */
2145         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2146
2147         if (!dev->vbi_dev) {
2148                 dev_err(dev->dev, "cannot allocate video_device.\n");
2149                 return -ENODEV;
2150         }
2151         dev->vbi_dev->ctrl_handler = &dev->ctrl_handler;
2152         /* register v4l2 vbi video_device */
2153         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2154                                     vbi_nr[dev->devno]);
2155         if (ret < 0) {
2156                 dev_err(dev->dev, "unable to register vbi device\n");
2157                 return ret;
2158         }
2159
2160         dev_info(dev->dev, "Registered VBI device %s\n",
2161                 video_device_node_name(dev->vbi_dev));
2162
2163         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2164                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2165                                                    "radio");
2166                 if (!dev->radio_dev) {
2167                         dev_err(dev->dev,
2168                                 "cannot allocate video_device.\n");
2169                         return -ENODEV;
2170                 }
2171                 dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
2172                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2173                                             radio_nr[dev->devno]);
2174                 if (ret < 0) {
2175                         dev_err(dev->dev,
2176                                 "can't register radio device\n");
2177                         return ret;
2178                 }
2179                 dev_info(dev->dev, "Registered radio device as %s\n",
2180                         video_device_node_name(dev->radio_dev));
2181         }
2182
2183         return 0;
2184 }