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 <linux/init.h>
  26 #include <linux/list.h>
  27 #include <linux/module.h>
  28 #include <linux/kernel.h>
  29 #include <linux/bitmap.h>
  30 #include <linux/usb.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.h"
  45 #include "cx231xx-vbi.h"
  46
  47 #define CX231XX_VERSION "0.0.2"
  48
  49 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  50 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  51
  52 #define cx231xx_videodbg(fmt, arg...) do {\
  53         if (video_debug) \
  54                 printk(KERN_INFO "%s %s :"fmt, \
  55                          dev->name, __func__ , ##arg); } while (0)
  56
  57 static unsigned int isoc_debug;
  58 module_param(isoc_debug, int, 0644);
  59 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  60
  61 #define cx231xx_isocdbg(fmt, arg...) \
  62 do {\
  63         if (isoc_debug) { \
  64                 printk(KERN_INFO "%s %s :"fmt, \
  65                          dev->name, __func__ , ##arg); \
  66         } \
  67   } while (0)
  68
  69 MODULE_AUTHOR(DRIVER_AUTHOR);
  70 MODULE_DESCRIPTION(DRIVER_DESC);
  71 MODULE_LICENSE("GPL");
  72 MODULE_VERSION(CX231XX_VERSION);
  73
  74 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  75 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  76 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  77 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  78
  79 module_param_array(card, int, NULL, 0444);
  80 module_param_array(video_nr, int, NULL, 0444);
  81 module_param_array(vbi_nr, int, NULL, 0444);
  82 module_param_array(radio_nr, int, NULL, 0444);
  83
  84 MODULE_PARM_DESC(card, "card type");
  85 MODULE_PARM_DESC(video_nr, "video device numbers");
  86 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  87 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  88
  89 static unsigned int video_debug;
  90 module_param(video_debug, int, 0644);
  91 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  92
  93 /* supported video standards */
  94 static struct cx231xx_fmt format[] = {
  95         {
  96          .name = "16bpp YUY2, 4:2:2, packed",
  97          .fourcc = V4L2_PIX_FMT_YUYV,
  98          .depth = 16,
  99          .reg = 0,
 100          },
 101 };
 102
 103
 104 /* ------------------------------------------------------------------
 105         Video buffer and parser functions
 106    ------------------------------------------------------------------*/
 107
 108 /*
 109  * Announces that a buffer were filled and request the next
 110  */
 111 static inline void buffer_filled(struct cx231xx *dev,
 112                                  struct cx231xx_dmaqueue *dma_q,
 113                                  struct cx231xx_buffer *buf)
 114 {
 115         /* Advice that buffer was filled */
 116         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 117         buf->vb.state = VIDEOBUF_DONE;
 118         buf->vb.field_count++;
 119         v4l2_get_timestamp(&buf->vb.ts);
 120
 121         if (dev->USE_ISO)
 122                 dev->video_mode.isoc_ctl.buf = NULL;
 123         else
 124                 dev->video_mode.bulk_ctl.buf = NULL;
 125
 126         list_del(&buf->vb.queue);
 127         wake_up(&buf->vb.done);
 128 }
 129
 130 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 131 {
 132         char *errmsg = "Unknown";
 133
 134         switch (status) {
 135         case -ENOENT:
 136                 errmsg = "unlinked synchronuously";
 137                 break;
 138         case -ECONNRESET:
 139                 errmsg = "unlinked asynchronuously";
 140                 break;
 141         case -ENOSR:
 142                 errmsg = "Buffer error (overrun)";
 143                 break;
 144         case -EPIPE:
 145                 errmsg = "Stalled (device not responding)";
 146                 break;
 147         case -EOVERFLOW:
 148                 errmsg = "Babble (bad cable?)";
 149                 break;
 150         case -EPROTO:
 151                 errmsg = "Bit-stuff error (bad cable?)";
 152                 break;
 153         case -EILSEQ:
 154                 errmsg = "CRC/Timeout (could be anything)";
 155                 break;
 156         case -ETIME:
 157                 errmsg = "Device does not respond";
 158                 break;
 159         }
 160         if (packet < 0) {
 161                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 162         } else {
 163                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 164                                 packet, status, errmsg);
 165         }
 166 }
 167
 168 /*
 169  * video-buf generic routine to get the next available buffer
 170  */
 171 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 172                                 struct cx231xx_buffer **buf)
 173 {
 174         struct cx231xx_video_mode *vmode =
 175             container_of(dma_q, struct cx231xx_video_mode, vidq);
 176         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 177
 178         char *outp;
 179
 180         if (list_empty(&dma_q->active)) {
 181                 cx231xx_isocdbg("No active queue to serve\n");
 182                 if (dev->USE_ISO)
 183                         dev->video_mode.isoc_ctl.buf = NULL;
 184                 else
 185                         dev->video_mode.bulk_ctl.buf = NULL;
 186                 *buf = NULL;
 187                 return;
 188         }
 189
 190         /* Get the next buffer */
 191         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 192
 193         /* Cleans up buffer - Useful for testing for frame/URB loss */
 194         outp = videobuf_to_vmalloc(&(*buf)->vb);
 195         memset(outp, 0, (*buf)->vb.size);
 196
 197         if (dev->USE_ISO)
 198                 dev->video_mode.isoc_ctl.buf = *buf;
 199         else
 200                 dev->video_mode.bulk_ctl.buf = *buf;
 201
 202         return;
 203 }
 204
 205 /*
 206  * Controls the isoc copy of each urb packet
 207  */
 208 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 209 {
 210         struct cx231xx_dmaqueue *dma_q = urb->context;
 211         int i, rc = 1;
 212         unsigned char *p_buffer;
 213         u32 bytes_parsed = 0, buffer_size = 0;
 214         u8 sav_eav = 0;
 215
 216         if (!dev)
 217                 return 0;
 218
 219         if (dev->state & DEV_DISCONNECTED)
 220                 return 0;
 221
 222         if (urb->status < 0) {
 223                 print_err_status(dev, -1, urb->status);
 224                 if (urb->status == -ENOENT)
 225                         return 0;
 226         }
 227
 228         for (i = 0; i < urb->number_of_packets; i++) {
 229                 int status = urb->iso_frame_desc[i].status;
 230
 231                 if (status < 0) {
 232                         print_err_status(dev, i, status);
 233                         if (urb->iso_frame_desc[i].status != -EPROTO)
 234                                 continue;
 235                 }
 236
 237                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 238                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 239                         continue;
 240                 }
 241                 if (urb->iso_frame_desc[i].actual_length >
 242                     dev->video_mode.max_pkt_size) {
 243                         cx231xx_isocdbg("packet bigger than packet size");
 244                         continue;
 245                 }
 246
 247                 /*  get buffer pointer and length */
 248                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 249                 buffer_size = urb->iso_frame_desc[i].actual_length;
 250                 bytes_parsed = 0;
 251
 252                 if (dma_q->is_partial_line) {
 253                         /* Handle the case of a partial line */
 254                         sav_eav = dma_q->last_sav;
 255                 } else {
 256                         /* Check for a SAV/EAV overlapping
 257                                 the buffer boundary */
 258                         sav_eav =
 259                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 260                                                           dma_q->partial_buf,
 261                                                           &bytes_parsed);
 262                 }
 263
 264                 sav_eav &= 0xF0;
 265                 /* Get the first line if we have some portion of an SAV/EAV from
 266                    the last buffer or a partial line  */
 267                 if (sav_eav) {
 268                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 269                                 sav_eav,        /* SAV/EAV */
 270                                 p_buffer + bytes_parsed,        /* p_buffer */
 271                                 buffer_size - bytes_parsed);/* buf size */
 272                 }
 273
 274                 /* Now parse data that is completely in this buffer */
 275                 /* dma_q->is_partial_line = 0;  */
 276
 277                 while (bytes_parsed < buffer_size) {
 278                         u32 bytes_used = 0;
 279
 280                         sav_eav = cx231xx_find_next_SAV_EAV(
 281                                 p_buffer + bytes_parsed,        /* p_buffer */
 282                                 buffer_size - bytes_parsed,     /* buf size */
 283                                 &bytes_used);/* bytes used to get SAV/EAV */
 284
 285                         bytes_parsed += bytes_used;
 286
 287                         sav_eav &= 0xF0;
 288                         if (sav_eav && (bytes_parsed < buffer_size)) {
 289                                 bytes_parsed += cx231xx_get_video_line(dev,
 290                                         dma_q, sav_eav, /* SAV/EAV */
 291                                         p_buffer + bytes_parsed,/* p_buffer */
 292                                         buffer_size - bytes_parsed);/*buf size*/
 293                         }
 294                 }
 295
 296                 /* Save the last four bytes of the buffer so we can check the
 297                    buffer boundary condition next time */
 298                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 299                 bytes_parsed = 0;
 300
 301         }
 302         return rc;
 303 }
 304
 305 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 306 {
 307         struct cx231xx_dmaqueue *dma_q = urb->context;
 308         int rc = 1;
 309         unsigned char *p_buffer;
 310         u32 bytes_parsed = 0, buffer_size = 0;
 311         u8 sav_eav = 0;
 312
 313         if (!dev)
 314                 return 0;
 315
 316         if (dev->state & DEV_DISCONNECTED)
 317                 return 0;
 318
 319         if (urb->status < 0) {
 320                 print_err_status(dev, -1, urb->status);
 321                 if (urb->status == -ENOENT)
 322                         return 0;
 323         }
 324
 325         if (1) {
 326
 327                 /*  get buffer pointer and length */
 328                 p_buffer = urb->transfer_buffer;
 329                 buffer_size = urb->actual_length;
 330                 bytes_parsed = 0;
 331
 332                 if (dma_q->is_partial_line) {
 333                         /* Handle the case of a partial line */
 334                         sav_eav = dma_q->last_sav;
 335                 } else {
 336                         /* Check for a SAV/EAV overlapping
 337                                 the buffer boundary */
 338                         sav_eav =
 339                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 340                                                           dma_q->partial_buf,
 341                                                           &bytes_parsed);
 342                 }
 343
 344                 sav_eav &= 0xF0;
 345                 /* Get the first line if we have some portion of an SAV/EAV from
 346                    the last buffer or a partial line  */
 347                 if (sav_eav) {
 348                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 349                                 sav_eav,        /* SAV/EAV */
 350                                 p_buffer + bytes_parsed,        /* p_buffer */
 351                                 buffer_size - bytes_parsed);/* buf size */
 352                 }
 353
 354                 /* Now parse data that is completely in this buffer */
 355                 /* dma_q->is_partial_line = 0;  */
 356
 357                 while (bytes_parsed < buffer_size) {
 358                         u32 bytes_used = 0;
 359
 360                         sav_eav = cx231xx_find_next_SAV_EAV(
 361                                 p_buffer + bytes_parsed,        /* p_buffer */
 362                                 buffer_size - bytes_parsed,     /* buf size */
 363                                 &bytes_used);/* bytes used to get SAV/EAV */
 364
 365                         bytes_parsed += bytes_used;
 366
 367                         sav_eav &= 0xF0;
 368                         if (sav_eav && (bytes_parsed < buffer_size)) {
 369                                 bytes_parsed += cx231xx_get_video_line(dev,
 370                                         dma_q, sav_eav, /* SAV/EAV */
 371                                         p_buffer + bytes_parsed,/* p_buffer */
 372                                         buffer_size - bytes_parsed);/*buf size*/
 373                         }
 374                 }
 375
 376                 /* Save the last four bytes of the buffer so we can check the
 377                    buffer boundary condition next time */
 378                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 379                 bytes_parsed = 0;
 380
 381         }
 382         return rc;
 383 }
 384
 385
 386 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 387                                  u32 *p_bytes_used)
 388 {
 389         u32 bytes_used;
 390         u8 boundary_bytes[8];
 391         u8 sav_eav = 0;
 392
 393         *p_bytes_used = 0;
 394
 395         /* Create an array of the last 4 bytes of the last buffer and the first
 396            4 bytes of the current buffer. */
 397
 398         memcpy(boundary_bytes, partial_buf, 4);
 399         memcpy(boundary_bytes + 4, p_buffer, 4);
 400
 401         /* Check for the SAV/EAV in the boundary buffer */
 402         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 403                                             &bytes_used);
 404
 405         if (sav_eav) {
 406                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 407                    only those used in the new buffer */
 408                 *p_bytes_used = bytes_used - 4;
 409         }
 410
 411         return sav_eav;
 412 }
 413
 414 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 415 {
 416         u32 i;
 417         u8 sav_eav = 0;
 418
 419         /*
 420          * Don't search if the buffer size is less than 4.  It causes a page
 421          * fault since buffer_size - 4 evaluates to a large number in that
 422          * case.
 423          */
 424         if (buffer_size < 4) {
 425                 *p_bytes_used = buffer_size;
 426                 return 0;
 427         }
 428
 429         for (i = 0; i < (buffer_size - 3); i++) {
 430
 431                 if ((p_buffer[i] == 0xFF) &&
 432                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 433
 434                         *p_bytes_used = i + 4;
 435                         sav_eav = p_buffer[i + 3];
 436                         return sav_eav;
 437                 }
 438         }
 439
 440         *p_bytes_used = buffer_size;
 441         return 0;
 442 }
 443
 444 u32 cx231xx_get_video_line(struct cx231xx *dev,
 445                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 446                            u8 *p_buffer, u32 buffer_size)
 447 {
 448         u32 bytes_copied = 0;
 449         int current_field = -1;
 450
 451         switch (sav_eav) {
 452         case SAV_ACTIVE_VIDEO_FIELD1:
 453                 /* looking for skipped line which occurred in PAL 720x480 mode.
 454                    In this case, there will be no active data contained
 455                    between the SAV and EAV */
 456                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 457                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 458                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 459                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 460                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 461                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 462                         return bytes_copied;
 463                 current_field = 1;
 464                 break;
 465
 466         case SAV_ACTIVE_VIDEO_FIELD2:
 467                 /* looking for skipped line which occurred in PAL 720x480 mode.
 468                    In this case, there will be no active data contained between
 469                    the SAV and EAV */
 470                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 471                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 472                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 473                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 474                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 475                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 476                         return bytes_copied;
 477                 current_field = 2;
 478                 break;
 479         }
 480
 481         dma_q->last_sav = sav_eav;
 482
 483         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 484                                                buffer_size, current_field);
 485
 486         return bytes_copied;
 487 }
 488
 489 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 490                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 491                             u32 length, int field_number)
 492 {
 493         u32 bytes_to_copy;
 494         struct cx231xx_buffer *buf;
 495         u32 _line_size = dev->width * 2;
 496
 497         if (dma_q->current_field != field_number)
 498                 cx231xx_reset_video_buffer(dev, dma_q);
 499
 500         /* get the buffer pointer */
 501         if (dev->USE_ISO)
 502                 buf = dev->video_mode.isoc_ctl.buf;
 503         else
 504                 buf = dev->video_mode.bulk_ctl.buf;
 505
 506         /* Remember the field number for next time */
 507         dma_q->current_field = field_number;
 508
 509         bytes_to_copy = dma_q->bytes_left_in_line;
 510         if (bytes_to_copy > length)
 511                 bytes_to_copy = length;
 512
 513         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 514                 dma_q->bytes_left_in_line -= bytes_to_copy;
 515                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 516                                           0 : 1;
 517                 return 0;
 518         }
 519
 520         dma_q->is_partial_line = 1;
 521
 522         /* If we don't have a buffer, just return the number of bytes we would
 523            have copied if we had a buffer. */
 524         if (!buf) {
 525                 dma_q->bytes_left_in_line -= bytes_to_copy;
 526                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 527                                          ? 0 : 1;
 528                 return bytes_to_copy;
 529         }
 530
 531         /* copy the data to video buffer */
 532         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 533
 534         dma_q->pos += bytes_to_copy;
 535         dma_q->bytes_left_in_line -= bytes_to_copy;
 536
 537         if (dma_q->bytes_left_in_line == 0) {
 538                 dma_q->bytes_left_in_line = _line_size;
 539                 dma_q->lines_completed++;
 540                 dma_q->is_partial_line = 0;
 541
 542                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 543                         buffer_filled(dev, dma_q, buf);
 544
 545                         dma_q->pos = 0;
 546                         buf = NULL;
 547                         dma_q->lines_completed = 0;
 548                 }
 549         }
 550
 551         return bytes_to_copy;
 552 }
 553
 554 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 555                                 struct cx231xx_dmaqueue *dma_q)
 556 {
 557         struct cx231xx_buffer *buf;
 558
 559         /* handle the switch from field 1 to field 2 */
 560         if (dma_q->current_field == 1) {
 561                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 562                         dma_q->field1_done = 1;
 563                 else
 564                         dma_q->field1_done = 0;
 565         }
 566
 567         if (dev->USE_ISO)
 568                 buf = dev->video_mode.isoc_ctl.buf;
 569         else
 570                 buf = dev->video_mode.bulk_ctl.buf;
 571
 572         if (buf == NULL) {
 573                 /* first try to get the buffer */
 574                 get_next_buf(dma_q, &buf);
 575
 576                 dma_q->pos = 0;
 577                 dma_q->field1_done = 0;
 578                 dma_q->current_field = -1;
 579         }
 580
 581         /* reset the counters */
 582         dma_q->bytes_left_in_line = dev->width << 1;
 583         dma_q->lines_completed = 0;
 584 }
 585
 586 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 587                     u8 *p_buffer, u32 bytes_to_copy)
 588 {
 589         u8 *p_out_buffer = NULL;
 590         u32 current_line_bytes_copied = 0;
 591         struct cx231xx_buffer *buf;
 592         u32 _line_size = dev->width << 1;
 593         void *startwrite;
 594         int offset, lencopy;
 595
 596         if (dev->USE_ISO)
 597                 buf = dev->video_mode.isoc_ctl.buf;
 598         else
 599                 buf = dev->video_mode.bulk_ctl.buf;
 600
 601         if (buf == NULL)
 602                 return -1;
 603
 604         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 605
 606         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 607
 608         /* Offset field 2 one line from the top of the buffer */
 609         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 610
 611         /* Offset for field 2 */
 612         startwrite = p_out_buffer + offset;
 613
 614         /* lines already completed in the current field */
 615         startwrite += (dma_q->lines_completed * _line_size * 2);
 616
 617         /* bytes already completed in the current line */
 618         startwrite += current_line_bytes_copied;
 619
 620         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 621                   bytes_to_copy : dma_q->bytes_left_in_line;
 622
 623         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 624                 return 0;
 625
 626         /* The below copies the UYVY data straight into video buffer */
 627         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 628
 629         return 0;
 630 }
 631
 632 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 633 {
 634         u16 i;
 635
 636         if (len <= 0)
 637                 return;
 638
 639         for (i = 0; i < len / 2; i++)
 640                 to[i] = (from[i] << 8) | (from[i] >> 8);
 641 }
 642
 643 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 644 {
 645         u8 buffer_complete = 0;
 646
 647         /* Dual field stream */
 648         buffer_complete = ((dma_q->current_field == 2) &&
 649                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 650                             dma_q->field1_done);
 651
 652         return buffer_complete;
 653 }
 654
 655 /* ------------------------------------------------------------------
 656         Videobuf operations
 657    ------------------------------------------------------------------*/
 658
 659 static int
 660 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 661 {
 662         struct cx231xx_fh *fh = vq->priv_data;
 663         struct cx231xx *dev = fh->dev;
 664
 665         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 666         if (0 == *count)
 667                 *count = CX231XX_DEF_BUF;
 668
 669         if (*count < CX231XX_MIN_BUF)
 670                 *count = CX231XX_MIN_BUF;
 671
 672         return 0;
 673 }
 674
 675 /* This is called *without* dev->slock held; please keep it that way */
 676 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 677 {
 678         struct cx231xx_fh *fh = vq->priv_data;
 679         struct cx231xx *dev = fh->dev;
 680         unsigned long flags = 0;
 681
 682         if (in_interrupt())
 683                 BUG();
 684
 685         /* We used to wait for the buffer to finish here, but this didn't work
 686            because, as we were keeping the state as VIDEOBUF_QUEUED,
 687            videobuf_queue_cancel marked it as finished for us.
 688            (Also, it could wedge forever if the hardware was misconfigured.)
 689
 690            This should be safe; by the time we get here, the buffer isn't
 691            queued anymore. If we ever start marking the buffers as
 692            VIDEOBUF_ACTIVE, it won't be, though.
 693          */
 694         spin_lock_irqsave(&dev->video_mode.slock, flags);
 695         if (dev->USE_ISO) {
 696                 if (dev->video_mode.isoc_ctl.buf == buf)
 697                         dev->video_mode.isoc_ctl.buf = NULL;
 698         } else {
 699                 if (dev->video_mode.bulk_ctl.buf == buf)
 700                         dev->video_mode.bulk_ctl.buf = NULL;
 701         }
 702         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 703
 704         videobuf_vmalloc_free(&buf->vb);
 705         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 706 }
 707
 708 static int
 709 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 710                enum v4l2_field field)
 711 {
 712         struct cx231xx_fh *fh = vq->priv_data;
 713         struct cx231xx_buffer *buf =
 714             container_of(vb, struct cx231xx_buffer, vb);
 715         struct cx231xx *dev = fh->dev;
 716         int rc = 0, urb_init = 0;
 717
 718         /* The only currently supported format is 16 bits/pixel */
 719         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 720                         + 7) >> 3;
 721         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 722                 return -EINVAL;
 723
 724         buf->vb.width = dev->width;
 725         buf->vb.height = dev->height;
 726         buf->vb.field = field;
 727
 728         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 729                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 730                 if (rc < 0)
 731                         goto fail;
 732         }
 733
 734         if (dev->USE_ISO) {
 735                 if (!dev->video_mode.isoc_ctl.num_bufs)
 736                         urb_init = 1;
 737         } else {
 738                 if (!dev->video_mode.bulk_ctl.num_bufs)
 739                         urb_init = 1;
 740         }
 741         /*cx231xx_info("urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 742                 urb_init, dev->video_mode.max_pkt_size);*/
 743         if (urb_init) {
 744                 dev->mode_tv = 0;
 745                 if (dev->USE_ISO)
 746                         rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 747                                        CX231XX_NUM_BUFS,
 748                                        dev->video_mode.max_pkt_size,
 749                                        cx231xx_isoc_copy);
 750                 else
 751                         rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 752                                        CX231XX_NUM_BUFS,
 753                                        dev->video_mode.max_pkt_size,
 754                                        cx231xx_bulk_copy);
 755                 if (rc < 0)
 756                         goto fail;
 757         }
 758
 759         buf->vb.state = VIDEOBUF_PREPARED;
 760         return 0;
 761
 762 fail:
 763         free_buffer(vq, buf);
 764         return rc;
 765 }
 766
 767 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 768 {
 769         struct cx231xx_buffer *buf =
 770             container_of(vb, struct cx231xx_buffer, vb);
 771         struct cx231xx_fh *fh = vq->priv_data;
 772         struct cx231xx *dev = fh->dev;
 773         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 774
 775         buf->vb.state = VIDEOBUF_QUEUED;
 776         list_add_tail(&buf->vb.queue, &vidq->active);
 777
 778 }
 779
 780 static void buffer_release(struct videobuf_queue *vq,
 781                            struct videobuf_buffer *vb)
 782 {
 783         struct cx231xx_buffer *buf =
 784             container_of(vb, struct cx231xx_buffer, vb);
 785         struct cx231xx_fh *fh = vq->priv_data;
 786         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 787
 788         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 789
 790         free_buffer(vq, buf);
 791 }
 792
 793 static struct videobuf_queue_ops cx231xx_video_qops = {
 794         .buf_setup = buffer_setup,
 795         .buf_prepare = buffer_prepare,
 796         .buf_queue = buffer_queue,
 797         .buf_release = buffer_release,
 798 };
 799
 800 /*********************  v4l2 interface  **************************************/
 801
 802 void video_mux(struct cx231xx *dev, int index)
 803 {
 804         dev->video_input = index;
 805         dev->ctl_ainput = INPUT(index)->amux;
 806
 807         cx231xx_set_video_input_mux(dev, index);
 808
 809         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 810
 811         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 812
 813         cx231xx_info("video_mux : %d\n", index);
 814
 815         /* do mode control overrides if required */
 816         cx231xx_do_mode_ctrl_overrides(dev);
 817 }
 818
 819 /* Usage lock check functions */
 820 static int res_get(struct cx231xx_fh *fh)
 821 {
 822         struct cx231xx *dev = fh->dev;
 823         int rc = 0;
 824
 825         /* This instance already has stream_on */
 826         if (fh->stream_on)
 827                 return rc;
 828
 829         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 830                 if (dev->stream_on)
 831                         return -EBUSY;
 832                 dev->stream_on = 1;
 833         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 834                 if (dev->vbi_stream_on)
 835                         return -EBUSY;
 836                 dev->vbi_stream_on = 1;
 837         } else
 838                 return -EINVAL;
 839
 840         fh->stream_on = 1;
 841
 842         return rc;
 843 }
 844
 845 static int res_check(struct cx231xx_fh *fh)
 846 {
 847         return fh->stream_on;
 848 }
 849
 850 static void res_free(struct cx231xx_fh *fh)
 851 {
 852         struct cx231xx *dev = fh->dev;
 853
 854         fh->stream_on = 0;
 855
 856         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 857                 dev->stream_on = 0;
 858         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 859                 dev->vbi_stream_on = 0;
 860 }
 861
 862 static int check_dev(struct cx231xx *dev)
 863 {
 864         if (dev->state & DEV_DISCONNECTED) {
 865                 cx231xx_errdev("v4l2 ioctl: device not present\n");
 866                 return -ENODEV;
 867         }
 868         return 0;
 869 }
 870
 871 /* ------------------------------------------------------------------
 872         IOCTL vidioc handling
 873    ------------------------------------------------------------------*/
 874
 875 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 876                                 struct v4l2_format *f)
 877 {
 878         struct cx231xx_fh *fh = priv;
 879         struct cx231xx *dev = fh->dev;
 880
 881         f->fmt.pix.width = dev->width;
 882         f->fmt.pix.height = dev->height;
 883         f->fmt.pix.pixelformat = dev->format->fourcc;
 884         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 885         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 886         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 887
 888         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 889         f->fmt.pix.priv = 0;
 890
 891         return 0;
 892 }
 893
 894 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 895 {
 896         unsigned int i;
 897
 898         for (i = 0; i < ARRAY_SIZE(format); i++)
 899                 if (format[i].fourcc == fourcc)
 900                         return &format[i];
 901
 902         return NULL;
 903 }
 904
 905 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 906                                   struct v4l2_format *f)
 907 {
 908         struct cx231xx_fh *fh = priv;
 909         struct cx231xx *dev = fh->dev;
 910         unsigned int width = f->fmt.pix.width;
 911         unsigned int height = f->fmt.pix.height;
 912         unsigned int maxw = norm_maxw(dev);
 913         unsigned int maxh = norm_maxh(dev);
 914         struct cx231xx_fmt *fmt;
 915
 916         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 917         if (!fmt) {
 918                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 919                                  f->fmt.pix.pixelformat);
 920                 return -EINVAL;
 921         }
 922
 923         /* width must even because of the YUYV format
 924            height must be even because of interlacing */
 925         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 926
 927         f->fmt.pix.width = width;
 928         f->fmt.pix.height = height;
 929         f->fmt.pix.pixelformat = fmt->fourcc;
 930         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
 931         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 932         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 933         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 934         f->fmt.pix.priv = 0;
 935
 936         return 0;
 937 }
 938
 939 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 940                                 struct v4l2_format *f)
 941 {
 942         struct cx231xx_fh *fh = priv;
 943         struct cx231xx *dev = fh->dev;
 944         int rc;
 945         struct cx231xx_fmt *fmt;
 946         struct v4l2_mbus_framefmt mbus_fmt;
 947
 948         rc = check_dev(dev);
 949         if (rc < 0)
 950                 return rc;
 951
 952         vidioc_try_fmt_vid_cap(file, priv, f);
 953
 954         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 955         if (!fmt)
 956                 return -EINVAL;
 957
 958         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
 959                 cx231xx_errdev("%s queue busy\n", __func__);
 960                 return -EBUSY;
 961         }
 962
 963         if (dev->stream_on && !fh->stream_on) {
 964                 cx231xx_errdev("%s device in use by another fh\n", __func__);
 965                 return -EBUSY;
 966         }
 967
 968         /* set new image size */
 969         dev->width = f->fmt.pix.width;
 970         dev->height = f->fmt.pix.height;
 971         dev->format = fmt;
 972
 973         v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
 974         call_all(dev, video, s_mbus_fmt, &mbus_fmt);
 975         v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
 976
 977         return rc;
 978 }
 979
 980 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 981 {
 982         struct cx231xx_fh *fh = priv;
 983         struct cx231xx *dev = fh->dev;
 984
 985         *id = dev->norm;
 986         return 0;
 987 }
 988
 989 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
 990 {
 991         struct cx231xx_fh *fh = priv;
 992         struct cx231xx *dev = fh->dev;
 993         struct v4l2_mbus_framefmt mbus_fmt;
 994         int rc;
 995
 996         rc = check_dev(dev);
 997         if (rc < 0)
 998                 return rc;
 999
1000         if (dev->norm == norm)
1001                 return 0;
1002
1003         if (videobuf_queue_is_busy(&fh->vb_vidq))
1004                 return -EBUSY;
1005
1006         dev->norm = norm;
1007
1008         /* Adjusts width/height, if needed */
1009         dev->width = 720;
1010         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1011
1012         call_all(dev, core, s_std, dev->norm);
1013
1014         /* We need to reset basic properties in the decoder related to
1015            resolution (since a standard change effects things like the number
1016            of lines in VACT, etc) */
1017         memset(&mbus_fmt, 0, sizeof(mbus_fmt));
1018         mbus_fmt.code = V4L2_MBUS_FMT_FIXED;
1019         mbus_fmt.width = dev->width;
1020         mbus_fmt.height = dev->height;
1021         call_all(dev, video, s_mbus_fmt, &mbus_fmt);
1022
1023         /* do mode control overrides */
1024         cx231xx_do_mode_ctrl_overrides(dev);
1025
1026         return 0;
1027 }
1028
1029 static const char *iname[] = {
1030         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1031         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1032         [CX231XX_VMUX_TELEVISION] = "Television",
1033         [CX231XX_VMUX_CABLE]      = "Cable TV",
1034         [CX231XX_VMUX_DVB]        = "DVB",
1035         [CX231XX_VMUX_DEBUG]      = "for debug only",
1036 };
1037
1038 int cx231xx_enum_input(struct file *file, void *priv,
1039                              struct v4l2_input *i)
1040 {
1041         struct cx231xx_fh *fh = priv;
1042         struct cx231xx *dev = fh->dev;
1043         u32 gen_stat;
1044         unsigned int ret, n;
1045
1046         n = i->index;
1047         if (n >= MAX_CX231XX_INPUT)
1048                 return -EINVAL;
1049         if (0 == INPUT(n)->type)
1050                 return -EINVAL;
1051
1052         i->index = n;
1053         i->type = V4L2_INPUT_TYPE_CAMERA;
1054
1055         strcpy(i->name, iname[INPUT(n)->type]);
1056
1057         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1058             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1059                 i->type = V4L2_INPUT_TYPE_TUNER;
1060
1061         i->std = dev->vdev->tvnorms;
1062
1063         /* If they are asking about the active input, read signal status */
1064         if (n == dev->video_input) {
1065                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1066                                             GEN_STAT, 2, &gen_stat, 4);
1067                 if (ret > 0) {
1068                         if ((gen_stat & FLD_VPRES) == 0x00)
1069                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1070                         if ((gen_stat & FLD_HLOCK) == 0x00)
1071                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1072                 }
1073         }
1074
1075         return 0;
1076 }
1077
1078 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1079 {
1080         struct cx231xx_fh *fh = priv;
1081         struct cx231xx *dev = fh->dev;
1082
1083         *i = dev->video_input;
1084
1085         return 0;
1086 }
1087
1088 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1089 {
1090         struct cx231xx_fh *fh = priv;
1091         struct cx231xx *dev = fh->dev;
1092         int rc;
1093
1094         dev->mode_tv = 0;
1095         rc = check_dev(dev);
1096         if (rc < 0)
1097                 return rc;
1098
1099         if (i >= MAX_CX231XX_INPUT)
1100                 return -EINVAL;
1101         if (0 == INPUT(i)->type)
1102                 return -EINVAL;
1103
1104         video_mux(dev, i);
1105
1106         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1107             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1108                 /* There's a tuner, so reset the standard and put it on the
1109                    last known frequency (since it was probably powered down
1110                    until now */
1111                 call_all(dev, core, s_std, dev->norm);
1112         }
1113
1114         return 0;
1115 }
1116
1117 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1118 {
1119         struct cx231xx_fh *fh = priv;
1120         struct cx231xx *dev = fh->dev;
1121         int rc;
1122
1123         rc = check_dev(dev);
1124         if (rc < 0)
1125                 return rc;
1126
1127         if (0 != t->index)
1128                 return -EINVAL;
1129
1130         strcpy(t->name, "Tuner");
1131
1132         t->type = V4L2_TUNER_ANALOG_TV;
1133         t->capability = V4L2_TUNER_CAP_NORM;
1134         t->rangehigh = 0xffffffffUL;
1135         t->signal = 0xffff;     /* LOCKED */
1136         call_all(dev, tuner, g_tuner, t);
1137
1138         return 0;
1139 }
1140
1141 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1142 {
1143         struct cx231xx_fh *fh = priv;
1144         struct cx231xx *dev = fh->dev;
1145         int rc;
1146
1147         rc = check_dev(dev);
1148         if (rc < 0)
1149                 return rc;
1150
1151         if (0 != t->index)
1152                 return -EINVAL;
1153 #if 0
1154         call_all(dev, tuner, s_tuner, t);
1155 #endif
1156         return 0;
1157 }
1158
1159 int cx231xx_g_frequency(struct file *file, void *priv,
1160                               struct v4l2_frequency *f)
1161 {
1162         struct cx231xx_fh *fh = priv;
1163         struct cx231xx *dev = fh->dev;
1164
1165         if (f->tuner)
1166                 return -EINVAL;
1167
1168         f->frequency = dev->ctl_freq;
1169
1170         return 0;
1171 }
1172
1173 int cx231xx_s_frequency(struct file *file, void *priv,
1174                               const struct v4l2_frequency *f)
1175 {
1176         struct cx231xx_fh *fh = priv;
1177         struct cx231xx *dev = fh->dev;
1178         struct v4l2_frequency new_freq = *f;
1179         int rc;
1180         u32 if_frequency = 5400000;
1181
1182         cx231xx_info("Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1183                  f->frequency, f->type);
1184         /*cx231xx_info("f->type:  1-radio 2-analogTV 3-digitalTV\n");*/
1185
1186         rc = check_dev(dev);
1187         if (rc < 0)
1188                 return rc;
1189
1190         if (0 != f->tuner)
1191                 return -EINVAL;
1192
1193         /* set pre channel change settings in DIF first */
1194         rc = cx231xx_tuner_pre_channel_change(dev);
1195
1196         call_all(dev, tuner, s_frequency, f);
1197         call_all(dev, tuner, g_frequency, &new_freq);
1198         dev->ctl_freq = new_freq.frequency;
1199
1200         /* set post channel change settings in DIF first */
1201         rc = cx231xx_tuner_post_channel_change(dev);
1202
1203         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1204                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1205                         if_frequency = 5400000;  /*5.4MHz       */
1206                 else if (dev->norm & V4L2_STD_B)
1207                         if_frequency = 6000000;  /*6.0MHz       */
1208                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1209                         if_frequency = 6900000;  /*6.9MHz       */
1210                 else if (dev->norm & V4L2_STD_GH)
1211                         if_frequency = 7100000;  /*7.1MHz       */
1212                 else if (dev->norm & V4L2_STD_PAL_I)
1213                         if_frequency = 7250000;  /*7.25MHz      */
1214                 else if (dev->norm & V4L2_STD_SECAM_L)
1215                         if_frequency = 6900000;  /*6.9MHz       */
1216                 else if (dev->norm & V4L2_STD_SECAM_LC)
1217                         if_frequency = 1250000;  /*1.25MHz      */
1218
1219                 cx231xx_info("if_frequency is set to %d\n", if_frequency);
1220                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1221
1222                 update_HH_register_after_set_DIF(dev);
1223         }
1224
1225         cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1226
1227         return rc;
1228 }
1229
1230 #ifdef CONFIG_VIDEO_ADV_DEBUG
1231
1232 int cx231xx_g_chip_info(struct file *file, void *fh,
1233                         struct v4l2_dbg_chip_info *chip)
1234 {
1235         switch (chip->match.addr) {
1236         case 0: /* Cx231xx - internal registers */
1237                 return 0;
1238         case 1: /* AFE - read byte */
1239                 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1240                 return 0;
1241         case 2: /* Video Block - read byte */
1242                 strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1243                 return 0;
1244         case 3: /* I2S block - read byte */
1245                 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1246                 return 0;
1247         case 4: /* AFE - read dword */
1248                 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1249                 return 0;
1250         case 5: /* Video Block - read dword */
1251                 strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1252                 return 0;
1253         case 6: /* I2S Block - read dword */
1254                 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1255                 return 0;
1256         }
1257         return -EINVAL;
1258 }
1259
1260 int cx231xx_g_register(struct file *file, void *priv,
1261                              struct v4l2_dbg_register *reg)
1262 {
1263         struct cx231xx_fh *fh = priv;
1264         struct cx231xx *dev = fh->dev;
1265         int ret;
1266         u8 value[4] = { 0, 0, 0, 0 };
1267         u32 data = 0;
1268
1269         switch (reg->match.addr) {
1270         case 0: /* Cx231xx - internal registers */
1271                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1272                                 (u16)reg->reg, value, 4);
1273                 reg->val = value[0] | value[1] << 8 |
1274                         value[2] << 16 | value[3] << 24;
1275                 reg->size = 4;
1276                 break;
1277         case 1: /* AFE - read byte */
1278                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1279                                 (u16)reg->reg, 2, &data, 1);
1280                 reg->val = data;
1281                 reg->size = 1;
1282                 break;
1283         case 2: /* Video Block - read byte */
1284                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1285                                 (u16)reg->reg, 2, &data, 1);
1286                 reg->val = data;
1287                 reg->size = 1;
1288                 break;
1289         case 3: /* I2S block - read byte */
1290                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1291                                 (u16)reg->reg, 1, &data, 1);
1292                 reg->val = data;
1293                 reg->size = 1;
1294                 break;
1295         case 4: /* AFE - read dword */
1296                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1297                                 (u16)reg->reg, 2, &data, 4);
1298                 reg->val = data;
1299                 reg->size = 4;
1300                 break;
1301         case 5: /* Video Block - read dword */
1302                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1303                                 (u16)reg->reg, 2, &data, 4);
1304                 reg->val = data;
1305                 reg->size = 4;
1306                 break;
1307         case 6: /* I2S Block - read dword */
1308                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1309                                 (u16)reg->reg, 1, &data, 4);
1310                 reg->val = data;
1311                 reg->size = 4;
1312                 break;
1313         default:
1314                 return -EINVAL;
1315         }
1316         return ret < 0 ? ret : 0;
1317 }
1318
1319 int cx231xx_s_register(struct file *file, void *priv,
1320                              const struct v4l2_dbg_register *reg)
1321 {
1322         struct cx231xx_fh *fh = priv;
1323         struct cx231xx *dev = fh->dev;
1324         int ret;
1325         u8 data[4] = { 0, 0, 0, 0 };
1326
1327         switch (reg->match.addr) {
1328         case 0: /* cx231xx internal registers */
1329                 data[0] = (u8) reg->val;
1330                 data[1] = (u8) (reg->val >> 8);
1331                 data[2] = (u8) (reg->val >> 16);
1332                 data[3] = (u8) (reg->val >> 24);
1333                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1334                                 (u16)reg->reg, data, 4);
1335                 break;
1336         case 1: /* AFE - write byte */
1337                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1338                                 (u16)reg->reg, 2, reg->val, 1);
1339                 break;
1340         case 2: /* Video Block - write byte */
1341                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1342                                 (u16)reg->reg, 2, reg->val, 1);
1343                 break;
1344         case 3: /* I2S block - write byte */
1345                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1346                                 (u16)reg->reg, 1, reg->val, 1);
1347                 break;
1348         case 4: /* AFE - write dword */
1349                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1350                                 (u16)reg->reg, 2, reg->val, 4);
1351                 break;
1352         case 5: /* Video Block - write dword */
1353                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1354                                 (u16)reg->reg, 2, reg->val, 4);
1355                 break;
1356         case 6: /* I2S block - write dword */
1357                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1358                                 (u16)reg->reg, 1, reg->val, 4);
1359                 break;
1360         default:
1361                 return -EINVAL;
1362         }
1363         return ret < 0 ? ret : 0;
1364 }
1365 #endif
1366
1367 static int vidioc_cropcap(struct file *file, void *priv,
1368                           struct v4l2_cropcap *cc)
1369 {
1370         struct cx231xx_fh *fh = priv;
1371         struct cx231xx *dev = fh->dev;
1372
1373         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1374                 return -EINVAL;
1375
1376         cc->bounds.left = 0;
1377         cc->bounds.top = 0;
1378         cc->bounds.width = dev->width;
1379         cc->bounds.height = dev->height;
1380         cc->defrect = cc->bounds;
1381         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1382         cc->pixelaspect.denominator = 59;
1383
1384         return 0;
1385 }
1386
1387 static int vidioc_streamon(struct file *file, void *priv,
1388                            enum v4l2_buf_type type)
1389 {
1390         struct cx231xx_fh *fh = priv;
1391         struct cx231xx *dev = fh->dev;
1392         int rc;
1393
1394         rc = check_dev(dev);
1395         if (rc < 0)
1396                 return rc;
1397
1398         rc = res_get(fh);
1399
1400         if (likely(rc >= 0))
1401                 rc = videobuf_streamon(&fh->vb_vidq);
1402
1403         call_all(dev, video, s_stream, 1);
1404
1405         return rc;
1406 }
1407
1408 static int vidioc_streamoff(struct file *file, void *priv,
1409                             enum v4l2_buf_type type)
1410 {
1411         struct cx231xx_fh *fh = priv;
1412         struct cx231xx *dev = fh->dev;
1413         int rc;
1414
1415         rc = check_dev(dev);
1416         if (rc < 0)
1417                 return rc;
1418
1419         if (type != fh->type)
1420                 return -EINVAL;
1421
1422         cx25840_call(dev, video, s_stream, 0);
1423
1424         videobuf_streamoff(&fh->vb_vidq);
1425         res_free(fh);
1426
1427         return 0;
1428 }
1429
1430 int cx231xx_querycap(struct file *file, void *priv,
1431                            struct v4l2_capability *cap)
1432 {
1433         struct video_device *vdev = video_devdata(file);
1434         struct cx231xx_fh *fh = priv;
1435         struct cx231xx *dev = fh->dev;
1436
1437         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1438         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1439         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1440
1441         if (vdev->vfl_type == VFL_TYPE_RADIO)
1442                 cap->device_caps = V4L2_CAP_RADIO;
1443         else {
1444                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1445                 if (vdev->vfl_type == VFL_TYPE_VBI)
1446                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1447                 else
1448                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1449         }
1450         if (dev->tuner_type != TUNER_ABSENT)
1451                 cap->device_caps |= V4L2_CAP_TUNER;
1452         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1453                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1454                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1455         if (dev->radio_dev)
1456                 cap->capabilities |= V4L2_CAP_RADIO;
1457
1458         return 0;
1459 }
1460
1461 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1462                                    struct v4l2_fmtdesc *f)
1463 {
1464         if (unlikely(f->index >= ARRAY_SIZE(format)))
1465                 return -EINVAL;
1466
1467         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1468         f->pixelformat = format[f->index].fourcc;
1469
1470         return 0;
1471 }
1472
1473 /* RAW VBI ioctls */
1474
1475 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1476                                 struct v4l2_format *f)
1477 {
1478         struct cx231xx_fh *fh = priv;
1479         struct cx231xx *dev = fh->dev;
1480
1481         f->fmt.vbi.sampling_rate = 6750000 * 4;
1482         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1483         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1484         f->fmt.vbi.offset = 0;
1485         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1486             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1487         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1488             PAL_VBI_LINES : NTSC_VBI_LINES;
1489         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1490             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1491         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1492         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1493
1494         return 0;
1495
1496 }
1497
1498 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1499                                   struct v4l2_format *f)
1500 {
1501         struct cx231xx_fh *fh = priv;
1502         struct cx231xx *dev = fh->dev;
1503
1504         f->fmt.vbi.sampling_rate = 6750000 * 4;
1505         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1506         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1507         f->fmt.vbi.offset = 0;
1508         f->fmt.vbi.flags = 0;
1509         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1510             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1511         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1512             PAL_VBI_LINES : NTSC_VBI_LINES;
1513         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1514             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1515         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1516         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1517
1518         return 0;
1519
1520 }
1521
1522 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1523                                   struct v4l2_format *f)
1524 {
1525         struct cx231xx_fh *fh = priv;
1526         struct cx231xx *dev = fh->dev;
1527
1528         if (dev->vbi_stream_on && !fh->stream_on) {
1529                 cx231xx_errdev("%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 errCode = 0, 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                 cx231xx_errdev
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                 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1657                 return -ENOMEM;
1658         }
1659         if (mutex_lock_interruptible(&dev->lock)) {
1660                 kfree(fh);
1661                 return -ERESTARTSYS;
1662         }
1663         fh->dev = dev;
1664         fh->type = fh_type;
1665         filp->private_data = fh;
1666         v4l2_fh_init(&fh->fh, vdev);
1667
1668         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1669                 /* Power up in Analog TV mode */
1670                 if (dev->board.external_av)
1671                         cx231xx_set_power_mode(dev,
1672                                  POLARIS_AVMODE_ENXTERNAL_AV);
1673                 else
1674                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1675
1676 #if 0
1677                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1678 #endif
1679
1680                 /* set video alternate setting */
1681                 cx231xx_set_video_alternate(dev);
1682
1683                 /* Needed, since GPIO might have disabled power of
1684                    some i2c device */
1685                 cx231xx_config_i2c(dev);
1686
1687                 /* device needs to be initialized before isoc transfer */
1688                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1689
1690         }
1691         if (radio) {
1692                 cx231xx_videodbg("video_open: setting radio device\n");
1693
1694                 /* cx231xx_start_radio(dev); */
1695
1696                 call_all(dev, tuner, s_radio);
1697         }
1698
1699         dev->users++;
1700
1701         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1702                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1703                                             NULL, &dev->video_mode.slock,
1704                                             fh->type, V4L2_FIELD_INTERLACED,
1705                                             sizeof(struct cx231xx_buffer),
1706                                             fh, &dev->lock);
1707         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1708                 /* Set the required alternate setting  VBI interface works in
1709                    Bulk mode only */
1710                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1711
1712                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1713                                             NULL, &dev->vbi_mode.slock,
1714                                             fh->type, V4L2_FIELD_SEQ_TB,
1715                                             sizeof(struct cx231xx_buffer),
1716                                             fh, &dev->lock);
1717         }
1718         mutex_unlock(&dev->lock);
1719         v4l2_fh_add(&fh->fh);
1720
1721         return errCode;
1722 }
1723
1724 /*
1725  * cx231xx_realease_resources()
1726  * unregisters the v4l2,i2c and usb devices
1727  * called when the device gets disconected or at module unload
1728 */
1729 void cx231xx_release_analog_resources(struct cx231xx *dev)
1730 {
1731
1732         /*FIXME: I2C IR should be disconnected */
1733
1734         if (dev->radio_dev) {
1735                 if (video_is_registered(dev->radio_dev))
1736                         video_unregister_device(dev->radio_dev);
1737                 else
1738                         video_device_release(dev->radio_dev);
1739                 dev->radio_dev = NULL;
1740         }
1741         if (dev->vbi_dev) {
1742                 cx231xx_info("V4L2 device %s deregistered\n",
1743                              video_device_node_name(dev->vbi_dev));
1744                 if (video_is_registered(dev->vbi_dev))
1745                         video_unregister_device(dev->vbi_dev);
1746                 else
1747                         video_device_release(dev->vbi_dev);
1748                 dev->vbi_dev = NULL;
1749         }
1750         if (dev->vdev) {
1751                 cx231xx_info("V4L2 device %s deregistered\n",
1752                              video_device_node_name(dev->vdev));
1753
1754                 if (dev->board.has_417)
1755                         cx231xx_417_unregister(dev);
1756
1757                 if (video_is_registered(dev->vdev))
1758                         video_unregister_device(dev->vdev);
1759                 else
1760                         video_device_release(dev->vdev);
1761                 dev->vdev = NULL;
1762         }
1763         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1764         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1765 }
1766
1767 /*
1768  * cx231xx_close()
1769  * stops streaming and deallocates all resources allocated by the v4l2
1770  * calls and ioctls
1771  */
1772 static int cx231xx_close(struct file *filp)
1773 {
1774         struct cx231xx_fh *fh = filp->private_data;
1775         struct cx231xx *dev = fh->dev;
1776
1777         cx231xx_videodbg("users=%d\n", dev->users);
1778
1779         cx231xx_videodbg("users=%d\n", dev->users);
1780         if (res_check(fh))
1781                 res_free(fh);
1782
1783         /*
1784          * To workaround error number=-71 on EP0 for VideoGrabber,
1785          *       need exclude following.
1786          * FIXME: It is probably safe to remove most of these, as we're
1787          * now avoiding the alternate setting for INDEX_VANC
1788          */
1789         if (!dev->board.no_alt_vanc)
1790                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1791                         videobuf_stop(&fh->vb_vidq);
1792                         videobuf_mmap_free(&fh->vb_vidq);
1793
1794                         /* the device is already disconnect,
1795                            free the remaining resources */
1796                         if (dev->state & DEV_DISCONNECTED) {
1797                                 if (atomic_read(&dev->devlist_count) > 0) {
1798                                         cx231xx_release_resources(dev);
1799                                         fh->dev = NULL;
1800                                         return 0;
1801                                 }
1802                                 return 0;
1803                         }
1804
1805                         /* do this before setting alternate! */
1806                         cx231xx_uninit_vbi_isoc(dev);
1807
1808                         /* set alternate 0 */
1809                         if (!dev->vbi_or_sliced_cc_mode)
1810                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1811                         else
1812                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1813
1814                         v4l2_fh_del(&fh->fh);
1815                         v4l2_fh_exit(&fh->fh);
1816                         kfree(fh);
1817                         dev->users--;
1818                         wake_up_interruptible_nr(&dev->open, 1);
1819                         return 0;
1820                 }
1821
1822         v4l2_fh_del(&fh->fh);
1823         dev->users--;
1824         if (!dev->users) {
1825                 videobuf_stop(&fh->vb_vidq);
1826                 videobuf_mmap_free(&fh->vb_vidq);
1827
1828                 /* the device is already disconnect,
1829                    free the remaining resources */
1830                 if (dev->state & DEV_DISCONNECTED) {
1831                         cx231xx_release_resources(dev);
1832                         fh->dev = NULL;
1833                         return 0;
1834                 }
1835
1836                 /* Save some power by putting tuner to sleep */
1837                 call_all(dev, core, s_power, 0);
1838
1839                 /* do this before setting alternate! */
1840                 if (dev->USE_ISO)
1841                         cx231xx_uninit_isoc(dev);
1842                 else
1843                         cx231xx_uninit_bulk(dev);
1844                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1845
1846                 /* set alternate 0 */
1847                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1848         }
1849         v4l2_fh_exit(&fh->fh);
1850         kfree(fh);
1851         wake_up_interruptible_nr(&dev->open, 1);
1852         return 0;
1853 }
1854
1855 static int cx231xx_v4l2_close(struct file *filp)
1856 {
1857         struct cx231xx_fh *fh = filp->private_data;
1858         struct cx231xx *dev = fh->dev;
1859         int rc;
1860
1861         mutex_lock(&dev->lock);
1862         rc = cx231xx_close(filp);
1863         mutex_unlock(&dev->lock);
1864         return rc;
1865 }
1866
1867 /*
1868  * cx231xx_v4l2_read()
1869  * will allocate buffers when called for the first time
1870  */
1871 static ssize_t
1872 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1873                   loff_t *pos)
1874 {
1875         struct cx231xx_fh *fh = filp->private_data;
1876         struct cx231xx *dev = fh->dev;
1877         int rc;
1878
1879         rc = check_dev(dev);
1880         if (rc < 0)
1881                 return rc;
1882
1883         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1884             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1885                 rc = res_get(fh);
1886
1887                 if (unlikely(rc < 0))
1888                         return rc;
1889
1890                 if (mutex_lock_interruptible(&dev->lock))
1891                         return -ERESTARTSYS;
1892                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1893                                             filp->f_flags & O_NONBLOCK);
1894                 mutex_unlock(&dev->lock);
1895                 return rc;
1896         }
1897         return 0;
1898 }
1899
1900 /*
1901  * cx231xx_v4l2_poll()
1902  * will allocate buffers when called for the first time
1903  */
1904 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
1905 {
1906         unsigned long req_events = poll_requested_events(wait);
1907         struct cx231xx_fh *fh = filp->private_data;
1908         struct cx231xx *dev = fh->dev;
1909         unsigned res = 0;
1910         int rc;
1911
1912         rc = check_dev(dev);
1913         if (rc < 0)
1914                 return POLLERR;
1915
1916         rc = res_get(fh);
1917
1918         if (unlikely(rc < 0))
1919                 return POLLERR;
1920
1921         if (v4l2_event_pending(&fh->fh))
1922                 res |= POLLPRI;
1923         else
1924                 poll_wait(filp, &fh->fh.wait, wait);
1925
1926         if (!(req_events & (POLLIN | POLLRDNORM)))
1927                 return res;
1928
1929         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
1930             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
1931                 mutex_lock(&dev->lock);
1932                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1933                 mutex_unlock(&dev->lock);
1934                 return res;
1935         }
1936         return res | POLLERR;
1937 }
1938
1939 /*
1940  * cx231xx_v4l2_mmap()
1941  */
1942 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1943 {
1944         struct cx231xx_fh *fh = filp->private_data;
1945         struct cx231xx *dev = fh->dev;
1946         int rc;
1947
1948         rc = check_dev(dev);
1949         if (rc < 0)
1950                 return rc;
1951
1952         rc = res_get(fh);
1953
1954         if (unlikely(rc < 0))
1955                 return rc;
1956
1957         if (mutex_lock_interruptible(&dev->lock))
1958                 return -ERESTARTSYS;
1959         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1960         mutex_unlock(&dev->lock);
1961
1962         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1963                          (unsigned long)vma->vm_start,
1964                          (unsigned long)vma->vm_end -
1965                          (unsigned long)vma->vm_start, rc);
1966
1967         return rc;
1968 }
1969
1970 static const struct v4l2_file_operations cx231xx_v4l_fops = {
1971         .owner   = THIS_MODULE,
1972         .open    = cx231xx_v4l2_open,
1973         .release = cx231xx_v4l2_close,
1974         .read    = cx231xx_v4l2_read,
1975         .poll    = cx231xx_v4l2_poll,
1976         .mmap    = cx231xx_v4l2_mmap,
1977         .unlocked_ioctl   = video_ioctl2,
1978 };
1979
1980 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1981         .vidioc_querycap               = cx231xx_querycap,
1982         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
1983         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
1984         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
1985         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
1986         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
1987         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
1988         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
1989         .vidioc_cropcap                = vidioc_cropcap,
1990         .vidioc_reqbufs                = vidioc_reqbufs,
1991         .vidioc_querybuf               = vidioc_querybuf,
1992         .vidioc_qbuf                   = vidioc_qbuf,
1993         .vidioc_dqbuf                  = vidioc_dqbuf,
1994         .vidioc_s_std                  = vidioc_s_std,
1995         .vidioc_g_std                  = vidioc_g_std,
1996         .vidioc_enum_input             = cx231xx_enum_input,
1997         .vidioc_g_input                = cx231xx_g_input,
1998         .vidioc_s_input                = cx231xx_s_input,
1999         .vidioc_streamon               = vidioc_streamon,
2000         .vidioc_streamoff              = vidioc_streamoff,
2001         .vidioc_g_tuner                = cx231xx_g_tuner,
2002         .vidioc_s_tuner                = cx231xx_s_tuner,
2003         .vidioc_g_frequency            = cx231xx_g_frequency,
2004         .vidioc_s_frequency            = cx231xx_s_frequency,
2005 #ifdef CONFIG_VIDEO_ADV_DEBUG
2006         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2007         .vidioc_g_register             = cx231xx_g_register,
2008         .vidioc_s_register             = cx231xx_s_register,
2009 #endif
2010         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2011         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2012 };
2013
2014 static struct video_device cx231xx_vbi_template;
2015
2016 static const struct video_device cx231xx_video_template = {
2017         .fops         = &cx231xx_v4l_fops,
2018         .release      = video_device_release,
2019         .ioctl_ops    = &video_ioctl_ops,
2020         .tvnorms      = V4L2_STD_ALL,
2021 };
2022
2023 static const struct v4l2_file_operations radio_fops = {
2024         .owner   = THIS_MODULE,
2025         .open   = cx231xx_v4l2_open,
2026         .release = cx231xx_v4l2_close,
2027         .poll = v4l2_ctrl_poll,
2028         .unlocked_ioctl = video_ioctl2,
2029 };
2030
2031 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2032         .vidioc_querycap    = cx231xx_querycap,
2033         .vidioc_g_tuner     = radio_g_tuner,
2034         .vidioc_s_tuner     = radio_s_tuner,
2035         .vidioc_g_frequency = cx231xx_g_frequency,
2036         .vidioc_s_frequency = cx231xx_s_frequency,
2037 #ifdef CONFIG_VIDEO_ADV_DEBUG
2038         .vidioc_g_chip_info = cx231xx_g_chip_info,
2039         .vidioc_g_register  = cx231xx_g_register,
2040         .vidioc_s_register  = cx231xx_s_register,
2041 #endif
2042         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2043         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2044 };
2045
2046 static struct video_device cx231xx_radio_template = {
2047         .name      = "cx231xx-radio",
2048         .fops      = &radio_fops,
2049         .ioctl_ops = &radio_ioctl_ops,
2050 };
2051
2052 /******************************** usb interface ******************************/
2053
2054 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2055                 const struct video_device
2056                 *template, const char *type_name)
2057 {
2058         struct video_device *vfd;
2059
2060         vfd = video_device_alloc();
2061         if (NULL == vfd)
2062                 return NULL;
2063
2064         *vfd = *template;
2065         vfd->v4l2_dev = &dev->v4l2_dev;
2066         vfd->release = video_device_release;
2067         vfd->debug = video_debug;
2068         vfd->lock = &dev->lock;
2069         set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
2070
2071         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2072
2073         video_set_drvdata(vfd, dev);
2074         if (dev->tuner_type == TUNER_ABSENT) {
2075                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2076                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2077                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2078                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2079         }
2080         return vfd;
2081 }
2082
2083 int cx231xx_register_analog_devices(struct cx231xx *dev)
2084 {
2085         int ret;
2086
2087         cx231xx_info("%s: v4l2 driver version %s\n",
2088                      dev->name, CX231XX_VERSION);
2089
2090         /* set default norm */
2091         dev->norm = V4L2_STD_PAL;
2092         dev->width = norm_maxw(dev);
2093         dev->height = norm_maxh(dev);
2094         dev->interlaced = 0;
2095
2096         /* Analog specific initialization */
2097         dev->format = &format[0];
2098
2099         /* Set the initial input */
2100         video_mux(dev, dev->video_input);
2101
2102         call_all(dev, core, s_std, dev->norm);
2103
2104         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2105         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2106
2107         if (dev->sd_cx25840) {
2108                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2109                                 dev->sd_cx25840->ctrl_handler, NULL);
2110                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2111                                 dev->sd_cx25840->ctrl_handler,
2112                                 v4l2_ctrl_radio_filter);
2113         }
2114
2115         if (dev->ctrl_handler.error)
2116                 return dev->ctrl_handler.error;
2117         if (dev->radio_ctrl_handler.error)
2118                 return dev->radio_ctrl_handler.error;
2119
2120         /* enable vbi capturing */
2121         /* write code here...  */
2122
2123         /* allocate and fill video video_device struct */
2124         dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2125         if (!dev->vdev) {
2126                 cx231xx_errdev("cannot allocate video_device.\n");
2127                 return -ENODEV;
2128         }
2129
2130         dev->vdev->ctrl_handler = &dev->ctrl_handler;
2131         /* register v4l2 video video_device */
2132         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2133                                     video_nr[dev->devno]);
2134         if (ret) {
2135                 cx231xx_errdev("unable to register video device (error=%i).\n",
2136                                ret);
2137                 return ret;
2138         }
2139
2140         cx231xx_info("%s/0: registered device %s [v4l2]\n",
2141                      dev->name, video_device_node_name(dev->vdev));
2142
2143         /* Initialize VBI template */
2144         cx231xx_vbi_template = cx231xx_video_template;
2145         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2146
2147         /* Allocate and fill vbi video_device struct */
2148         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2149
2150         if (!dev->vbi_dev) {
2151                 cx231xx_errdev("cannot allocate video_device.\n");
2152                 return -ENODEV;
2153         }
2154         dev->vbi_dev->ctrl_handler = &dev->ctrl_handler;
2155         /* register v4l2 vbi video_device */
2156         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2157                                     vbi_nr[dev->devno]);
2158         if (ret < 0) {
2159                 cx231xx_errdev("unable to register vbi device\n");
2160                 return ret;
2161         }
2162
2163         cx231xx_info("%s/0: registered device %s\n",
2164                      dev->name, video_device_node_name(dev->vbi_dev));
2165
2166         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2167                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2168                                                    "radio");
2169                 if (!dev->radio_dev) {
2170                         cx231xx_errdev("cannot allocate video_device.\n");
2171                         return -ENODEV;
2172                 }
2173                 dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
2174                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2175                                             radio_nr[dev->devno]);
2176                 if (ret < 0) {
2177                         cx231xx_errdev("can't register radio device\n");
2178                         return ret;
2179                 }
2180                 cx231xx_info("Registered radio device as %s\n",
2181                              video_device_node_name(dev->radio_dev));
2182         }
2183
2184         cx231xx_info("V4L2 device registered as %s and %s\n",
2185                      video_device_node_name(dev->vdev),
2186                      video_device_node_name(dev->vbi_dev));
2187
2188         return 0;
2189 }