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;
 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 1;
 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         unsigned char *p_buffer;
 309         u32 bytes_parsed = 0, buffer_size = 0;
 310         u8 sav_eav = 0;
 311
 312         if (!dev)
 313                 return 0;
 314
 315         if (dev->state & DEV_DISCONNECTED)
 316                 return 0;
 317
 318         if (urb->status < 0) {
 319                 print_err_status(dev, -1, urb->status);
 320                 if (urb->status == -ENOENT)
 321                         return 0;
 322         }
 323
 324         if (1) {
 325
 326                 /*  get buffer pointer and length */
 327                 p_buffer = urb->transfer_buffer;
 328                 buffer_size = urb->actual_length;
 329                 bytes_parsed = 0;
 330
 331                 if (dma_q->is_partial_line) {
 332                         /* Handle the case of a partial line */
 333                         sav_eav = dma_q->last_sav;
 334                 } else {
 335                         /* Check for a SAV/EAV overlapping
 336                                 the buffer boundary */
 337                         sav_eav =
 338                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 339                                                           dma_q->partial_buf,
 340                                                           &bytes_parsed);
 341                 }
 342
 343                 sav_eav &= 0xF0;
 344                 /* Get the first line if we have some portion of an SAV/EAV from
 345                    the last buffer or a partial line  */
 346                 if (sav_eav) {
 347                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 348                                 sav_eav,        /* SAV/EAV */
 349                                 p_buffer + bytes_parsed,        /* p_buffer */
 350                                 buffer_size - bytes_parsed);/* buf size */
 351                 }
 352
 353                 /* Now parse data that is completely in this buffer */
 354                 /* dma_q->is_partial_line = 0;  */
 355
 356                 while (bytes_parsed < buffer_size) {
 357                         u32 bytes_used = 0;
 358
 359                         sav_eav = cx231xx_find_next_SAV_EAV(
 360                                 p_buffer + bytes_parsed,        /* p_buffer */
 361                                 buffer_size - bytes_parsed,     /* buf size */
 362                                 &bytes_used);/* bytes used to get SAV/EAV */
 363
 364                         bytes_parsed += bytes_used;
 365
 366                         sav_eav &= 0xF0;
 367                         if (sav_eav && (bytes_parsed < buffer_size)) {
 368                                 bytes_parsed += cx231xx_get_video_line(dev,
 369                                         dma_q, sav_eav, /* SAV/EAV */
 370                                         p_buffer + bytes_parsed,/* p_buffer */
 371                                         buffer_size - bytes_parsed);/*buf size*/
 372                         }
 373                 }
 374
 375                 /* Save the last four bytes of the buffer so we can check the
 376                    buffer boundary condition next time */
 377                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 378                 bytes_parsed = 0;
 379
 380         }
 381         return 1;
 382 }
 383
 384
 385 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 386                                  u32 *p_bytes_used)
 387 {
 388         u32 bytes_used;
 389         u8 boundary_bytes[8];
 390         u8 sav_eav = 0;
 391
 392         *p_bytes_used = 0;
 393
 394         /* Create an array of the last 4 bytes of the last buffer and the first
 395            4 bytes of the current buffer. */
 396
 397         memcpy(boundary_bytes, partial_buf, 4);
 398         memcpy(boundary_bytes + 4, p_buffer, 4);
 399
 400         /* Check for the SAV/EAV in the boundary buffer */
 401         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 402                                             &bytes_used);
 403
 404         if (sav_eav) {
 405                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 406                    only those used in the new buffer */
 407                 *p_bytes_used = bytes_used - 4;
 408         }
 409
 410         return sav_eav;
 411 }
 412
 413 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 414 {
 415         u32 i;
 416         u8 sav_eav = 0;
 417
 418         /*
 419          * Don't search if the buffer size is less than 4.  It causes a page
 420          * fault since buffer_size - 4 evaluates to a large number in that
 421          * case.
 422          */
 423         if (buffer_size < 4) {
 424                 *p_bytes_used = buffer_size;
 425                 return 0;
 426         }
 427
 428         for (i = 0; i < (buffer_size - 3); i++) {
 429
 430                 if ((p_buffer[i] == 0xFF) &&
 431                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 432
 433                         *p_bytes_used = i + 4;
 434                         sav_eav = p_buffer[i + 3];
 435                         return sav_eav;
 436                 }
 437         }
 438
 439         *p_bytes_used = buffer_size;
 440         return 0;
 441 }
 442
 443 u32 cx231xx_get_video_line(struct cx231xx *dev,
 444                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 445                            u8 *p_buffer, u32 buffer_size)
 446 {
 447         u32 bytes_copied = 0;
 448         int current_field = -1;
 449
 450         switch (sav_eav) {
 451         case SAV_ACTIVE_VIDEO_FIELD1:
 452                 /* looking for skipped line which occurred in PAL 720x480 mode.
 453                    In this case, there will be no active data contained
 454                    between the SAV and EAV */
 455                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 456                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 457                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 458                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 459                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 460                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 461                         return bytes_copied;
 462                 current_field = 1;
 463                 break;
 464
 465         case SAV_ACTIVE_VIDEO_FIELD2:
 466                 /* looking for skipped line which occurred in PAL 720x480 mode.
 467                    In this case, there will be no active data contained between
 468                    the SAV and EAV */
 469                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 470                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 471                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 472                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 473                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 474                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 475                         return bytes_copied;
 476                 current_field = 2;
 477                 break;
 478         }
 479
 480         dma_q->last_sav = sav_eav;
 481
 482         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 483                                                buffer_size, current_field);
 484
 485         return bytes_copied;
 486 }
 487
 488 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 489                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 490                             u32 length, int field_number)
 491 {
 492         u32 bytes_to_copy;
 493         struct cx231xx_buffer *buf;
 494         u32 _line_size = dev->width * 2;
 495
 496         if (dma_q->current_field != field_number)
 497                 cx231xx_reset_video_buffer(dev, dma_q);
 498
 499         /* get the buffer pointer */
 500         if (dev->USE_ISO)
 501                 buf = dev->video_mode.isoc_ctl.buf;
 502         else
 503                 buf = dev->video_mode.bulk_ctl.buf;
 504
 505         /* Remember the field number for next time */
 506         dma_q->current_field = field_number;
 507
 508         bytes_to_copy = dma_q->bytes_left_in_line;
 509         if (bytes_to_copy > length)
 510                 bytes_to_copy = length;
 511
 512         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 513                 dma_q->bytes_left_in_line -= bytes_to_copy;
 514                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 515                                           0 : 1;
 516                 return 0;
 517         }
 518
 519         dma_q->is_partial_line = 1;
 520
 521         /* If we don't have a buffer, just return the number of bytes we would
 522            have copied if we had a buffer. */
 523         if (!buf) {
 524                 dma_q->bytes_left_in_line -= bytes_to_copy;
 525                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 526                                          ? 0 : 1;
 527                 return bytes_to_copy;
 528         }
 529
 530         /* copy the data to video buffer */
 531         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 532
 533         dma_q->pos += bytes_to_copy;
 534         dma_q->bytes_left_in_line -= bytes_to_copy;
 535
 536         if (dma_q->bytes_left_in_line == 0) {
 537                 dma_q->bytes_left_in_line = _line_size;
 538                 dma_q->lines_completed++;
 539                 dma_q->is_partial_line = 0;
 540
 541                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 542                         buffer_filled(dev, dma_q, buf);
 543
 544                         dma_q->pos = 0;
 545                         buf = NULL;
 546                         dma_q->lines_completed = 0;
 547                 }
 548         }
 549
 550         return bytes_to_copy;
 551 }
 552
 553 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 554                                 struct cx231xx_dmaqueue *dma_q)
 555 {
 556         struct cx231xx_buffer *buf;
 557
 558         /* handle the switch from field 1 to field 2 */
 559         if (dma_q->current_field == 1) {
 560                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 561                         dma_q->field1_done = 1;
 562                 else
 563                         dma_q->field1_done = 0;
 564         }
 565
 566         if (dev->USE_ISO)
 567                 buf = dev->video_mode.isoc_ctl.buf;
 568         else
 569                 buf = dev->video_mode.bulk_ctl.buf;
 570
 571         if (buf == NULL) {
 572                 /* first try to get the buffer */
 573                 get_next_buf(dma_q, &buf);
 574
 575                 dma_q->pos = 0;
 576                 dma_q->field1_done = 0;
 577                 dma_q->current_field = -1;
 578         }
 579
 580         /* reset the counters */
 581         dma_q->bytes_left_in_line = dev->width << 1;
 582         dma_q->lines_completed = 0;
 583 }
 584
 585 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 586                     u8 *p_buffer, u32 bytes_to_copy)
 587 {
 588         u8 *p_out_buffer = NULL;
 589         u32 current_line_bytes_copied = 0;
 590         struct cx231xx_buffer *buf;
 591         u32 _line_size = dev->width << 1;
 592         void *startwrite;
 593         int offset, lencopy;
 594
 595         if (dev->USE_ISO)
 596                 buf = dev->video_mode.isoc_ctl.buf;
 597         else
 598                 buf = dev->video_mode.bulk_ctl.buf;
 599
 600         if (buf == NULL)
 601                 return -1;
 602
 603         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 604
 605         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 606
 607         /* Offset field 2 one line from the top of the buffer */
 608         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 609
 610         /* Offset for field 2 */
 611         startwrite = p_out_buffer + offset;
 612
 613         /* lines already completed in the current field */
 614         startwrite += (dma_q->lines_completed * _line_size * 2);
 615
 616         /* bytes already completed in the current line */
 617         startwrite += current_line_bytes_copied;
 618
 619         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 620                   bytes_to_copy : dma_q->bytes_left_in_line;
 621
 622         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 623                 return 0;
 624
 625         /* The below copies the UYVY data straight into video buffer */
 626         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 627
 628         return 0;
 629 }
 630
 631 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 632 {
 633         u16 i;
 634
 635         if (len <= 0)
 636                 return;
 637
 638         for (i = 0; i < len / 2; i++)
 639                 to[i] = (from[i] << 8) | (from[i] >> 8);
 640 }
 641
 642 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 643 {
 644         u8 buffer_complete = 0;
 645
 646         /* Dual field stream */
 647         buffer_complete = ((dma_q->current_field == 2) &&
 648                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 649                             dma_q->field1_done);
 650
 651         return buffer_complete;
 652 }
 653
 654 /* ------------------------------------------------------------------
 655         Videobuf operations
 656    ------------------------------------------------------------------*/
 657
 658 static int
 659 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 660 {
 661         struct cx231xx_fh *fh = vq->priv_data;
 662         struct cx231xx *dev = fh->dev;
 663
 664         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 665         if (0 == *count)
 666                 *count = CX231XX_DEF_BUF;
 667
 668         if (*count < CX231XX_MIN_BUF)
 669                 *count = CX231XX_MIN_BUF;
 670
 671         return 0;
 672 }
 673
 674 /* This is called *without* dev->slock held; please keep it that way */
 675 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 676 {
 677         struct cx231xx_fh *fh = vq->priv_data;
 678         struct cx231xx *dev = fh->dev;
 679         unsigned long flags = 0;
 680
 681         if (in_interrupt())
 682                 BUG();
 683
 684         /* We used to wait for the buffer to finish here, but this didn't work
 685            because, as we were keeping the state as VIDEOBUF_QUEUED,
 686            videobuf_queue_cancel marked it as finished for us.
 687            (Also, it could wedge forever if the hardware was misconfigured.)
 688
 689            This should be safe; by the time we get here, the buffer isn't
 690            queued anymore. If we ever start marking the buffers as
 691            VIDEOBUF_ACTIVE, it won't be, though.
 692          */
 693         spin_lock_irqsave(&dev->video_mode.slock, flags);
 694         if (dev->USE_ISO) {
 695                 if (dev->video_mode.isoc_ctl.buf == buf)
 696                         dev->video_mode.isoc_ctl.buf = NULL;
 697         } else {
 698                 if (dev->video_mode.bulk_ctl.buf == buf)
 699                         dev->video_mode.bulk_ctl.buf = NULL;
 700         }
 701         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 702
 703         videobuf_vmalloc_free(&buf->vb);
 704         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 705 }
 706
 707 static int
 708 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 709                enum v4l2_field field)
 710 {
 711         struct cx231xx_fh *fh = vq->priv_data;
 712         struct cx231xx_buffer *buf =
 713             container_of(vb, struct cx231xx_buffer, vb);
 714         struct cx231xx *dev = fh->dev;
 715         int rc = 0, urb_init = 0;
 716
 717         /* The only currently supported format is 16 bits/pixel */
 718         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 719                         + 7) >> 3;
 720         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 721                 return -EINVAL;
 722
 723         buf->vb.width = dev->width;
 724         buf->vb.height = dev->height;
 725         buf->vb.field = field;
 726
 727         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 728                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 729                 if (rc < 0)
 730                         goto fail;
 731         }
 732
 733         if (dev->USE_ISO) {
 734                 if (!dev->video_mode.isoc_ctl.num_bufs)
 735                         urb_init = 1;
 736         } else {
 737                 if (!dev->video_mode.bulk_ctl.num_bufs)
 738                         urb_init = 1;
 739         }
 740         /*cx231xx_info("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         cx231xx_info("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                 cx231xx_errdev("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                 cx231xx_errdev("%s queue busy\n", __func__);
 957                 return -EBUSY;
 958         }
 959
 960         if (dev->stream_on && !fh->stream_on) {
 961                 cx231xx_errdev("%s device in use by another fh\n", __func__);
 962                 return -EBUSY;
 963         }
 964
 965         /* set new image size */
 966         dev->width = f->fmt.pix.width;
 967         dev->height = f->fmt.pix.height;
 968         dev->format = fmt;
 969
 970         v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
 971         call_all(dev, video, s_mbus_fmt, &mbus_fmt);
 972         v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
 973
 974         return rc;
 975 }
 976
 977 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 978 {
 979         struct cx231xx_fh *fh = priv;
 980         struct cx231xx *dev = fh->dev;
 981
 982         *id = dev->norm;
 983         return 0;
 984 }
 985
 986 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
 987 {
 988         struct cx231xx_fh *fh = priv;
 989         struct cx231xx *dev = fh->dev;
 990         struct v4l2_mbus_framefmt mbus_fmt;
 991         int rc;
 992
 993         rc = check_dev(dev);
 994         if (rc < 0)
 995                 return rc;
 996
 997         if (dev->norm == norm)
 998                 return 0;
 999
1000         if (videobuf_queue_is_busy(&fh->vb_vidq))
1001                 return -EBUSY;
1002
1003         dev->norm = norm;
1004
1005         /* Adjusts width/height, if needed */
1006         dev->width = 720;
1007         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1008
1009         call_all(dev, video, s_std, dev->norm);
1010
1011         /* We need to reset basic properties in the decoder related to
1012            resolution (since a standard change effects things like the number
1013            of lines in VACT, etc) */
1014         memset(&mbus_fmt, 0, sizeof(mbus_fmt));
1015         mbus_fmt.code = V4L2_MBUS_FMT_FIXED;
1016         mbus_fmt.width = dev->width;
1017         mbus_fmt.height = dev->height;
1018         call_all(dev, video, s_mbus_fmt, &mbus_fmt);
1019
1020         /* do mode control overrides */
1021         cx231xx_do_mode_ctrl_overrides(dev);
1022
1023         return 0;
1024 }
1025
1026 static const char *iname[] = {
1027         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1028         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1029         [CX231XX_VMUX_TELEVISION] = "Television",
1030         [CX231XX_VMUX_CABLE]      = "Cable TV",
1031         [CX231XX_VMUX_DVB]        = "DVB",
1032         [CX231XX_VMUX_DEBUG]      = "for debug only",
1033 };
1034
1035 int cx231xx_enum_input(struct file *file, void *priv,
1036                              struct v4l2_input *i)
1037 {
1038         struct cx231xx_fh *fh = priv;
1039         struct cx231xx *dev = fh->dev;
1040         u32 gen_stat;
1041         unsigned int ret, n;
1042
1043         n = i->index;
1044         if (n >= MAX_CX231XX_INPUT)
1045                 return -EINVAL;
1046         if (0 == INPUT(n)->type)
1047                 return -EINVAL;
1048
1049         i->index = n;
1050         i->type = V4L2_INPUT_TYPE_CAMERA;
1051
1052         strcpy(i->name, iname[INPUT(n)->type]);
1053
1054         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1055             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1056                 i->type = V4L2_INPUT_TYPE_TUNER;
1057
1058         i->std = dev->vdev->tvnorms;
1059
1060         /* If they are asking about the active input, read signal status */
1061         if (n == dev->video_input) {
1062                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1063                                             GEN_STAT, 2, &gen_stat, 4);
1064                 if (ret > 0) {
1065                         if ((gen_stat & FLD_VPRES) == 0x00)
1066                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1067                         if ((gen_stat & FLD_HLOCK) == 0x00)
1068                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1069                 }
1070         }
1071
1072         return 0;
1073 }
1074
1075 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1076 {
1077         struct cx231xx_fh *fh = priv;
1078         struct cx231xx *dev = fh->dev;
1079
1080         *i = dev->video_input;
1081
1082         return 0;
1083 }
1084
1085 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1086 {
1087         struct cx231xx_fh *fh = priv;
1088         struct cx231xx *dev = fh->dev;
1089         int rc;
1090
1091         dev->mode_tv = 0;
1092         rc = check_dev(dev);
1093         if (rc < 0)
1094                 return rc;
1095
1096         if (i >= MAX_CX231XX_INPUT)
1097                 return -EINVAL;
1098         if (0 == INPUT(i)->type)
1099                 return -EINVAL;
1100
1101         video_mux(dev, i);
1102
1103         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1104             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1105                 /* There's a tuner, so reset the standard and put it on the
1106                    last known frequency (since it was probably powered down
1107                    until now */
1108                 call_all(dev, video, s_std, dev->norm);
1109         }
1110
1111         return 0;
1112 }
1113
1114 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1115 {
1116         struct cx231xx_fh *fh = priv;
1117         struct cx231xx *dev = fh->dev;
1118         int rc;
1119
1120         rc = check_dev(dev);
1121         if (rc < 0)
1122                 return rc;
1123
1124         if (0 != t->index)
1125                 return -EINVAL;
1126
1127         strcpy(t->name, "Tuner");
1128
1129         t->type = V4L2_TUNER_ANALOG_TV;
1130         t->capability = V4L2_TUNER_CAP_NORM;
1131         t->rangehigh = 0xffffffffUL;
1132         t->signal = 0xffff;     /* LOCKED */
1133         call_all(dev, tuner, g_tuner, t);
1134
1135         return 0;
1136 }
1137
1138 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1139 {
1140         struct cx231xx_fh *fh = priv;
1141         struct cx231xx *dev = fh->dev;
1142         int rc;
1143
1144         rc = check_dev(dev);
1145         if (rc < 0)
1146                 return rc;
1147
1148         if (0 != t->index)
1149                 return -EINVAL;
1150 #if 0
1151         call_all(dev, tuner, s_tuner, t);
1152 #endif
1153         return 0;
1154 }
1155
1156 int cx231xx_g_frequency(struct file *file, void *priv,
1157                               struct v4l2_frequency *f)
1158 {
1159         struct cx231xx_fh *fh = priv;
1160         struct cx231xx *dev = fh->dev;
1161
1162         if (f->tuner)
1163                 return -EINVAL;
1164
1165         f->frequency = dev->ctl_freq;
1166
1167         return 0;
1168 }
1169
1170 int cx231xx_s_frequency(struct file *file, void *priv,
1171                               const struct v4l2_frequency *f)
1172 {
1173         struct cx231xx_fh *fh = priv;
1174         struct cx231xx *dev = fh->dev;
1175         struct v4l2_frequency new_freq = *f;
1176         int rc;
1177         u32 if_frequency = 5400000;
1178
1179         cx231xx_info("Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1180                  f->frequency, f->type);
1181         /*cx231xx_info("f->type:  1-radio 2-analogTV 3-digitalTV\n");*/
1182
1183         rc = check_dev(dev);
1184         if (rc < 0)
1185                 return rc;
1186
1187         if (0 != f->tuner)
1188                 return -EINVAL;
1189
1190         /* set pre channel change settings in DIF first */
1191         rc = cx231xx_tuner_pre_channel_change(dev);
1192
1193         call_all(dev, tuner, s_frequency, f);
1194         call_all(dev, tuner, g_frequency, &new_freq);
1195         dev->ctl_freq = new_freq.frequency;
1196
1197         /* set post channel change settings in DIF first */
1198         rc = cx231xx_tuner_post_channel_change(dev);
1199
1200         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1201                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1202                         if_frequency = 5400000;  /*5.4MHz       */
1203                 else if (dev->norm & V4L2_STD_B)
1204                         if_frequency = 6000000;  /*6.0MHz       */
1205                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1206                         if_frequency = 6900000;  /*6.9MHz       */
1207                 else if (dev->norm & V4L2_STD_GH)
1208                         if_frequency = 7100000;  /*7.1MHz       */
1209                 else if (dev->norm & V4L2_STD_PAL_I)
1210                         if_frequency = 7250000;  /*7.25MHz      */
1211                 else if (dev->norm & V4L2_STD_SECAM_L)
1212                         if_frequency = 6900000;  /*6.9MHz       */
1213                 else if (dev->norm & V4L2_STD_SECAM_LC)
1214                         if_frequency = 1250000;  /*1.25MHz      */
1215
1216                 cx231xx_info("if_frequency is set to %d\n", if_frequency);
1217                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1218
1219                 update_HH_register_after_set_DIF(dev);
1220         }
1221
1222         cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1223
1224         return rc;
1225 }
1226
1227 #ifdef CONFIG_VIDEO_ADV_DEBUG
1228
1229 int cx231xx_g_chip_info(struct file *file, void *fh,
1230                         struct v4l2_dbg_chip_info *chip)
1231 {
1232         switch (chip->match.addr) {
1233         case 0: /* Cx231xx - internal registers */
1234                 return 0;
1235         case 1: /* AFE - read byte */
1236                 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1237                 return 0;
1238         case 2: /* Video Block - read byte */
1239                 strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1240                 return 0;
1241         case 3: /* I2S block - read byte */
1242                 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1243                 return 0;
1244         case 4: /* AFE - read dword */
1245                 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1246                 return 0;
1247         case 5: /* Video Block - read dword */
1248                 strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1249                 return 0;
1250         case 6: /* I2S Block - read dword */
1251                 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1252                 return 0;
1253         }
1254         return -EINVAL;
1255 }
1256
1257 int cx231xx_g_register(struct file *file, void *priv,
1258                              struct v4l2_dbg_register *reg)
1259 {
1260         struct cx231xx_fh *fh = priv;
1261         struct cx231xx *dev = fh->dev;
1262         int ret;
1263         u8 value[4] = { 0, 0, 0, 0 };
1264         u32 data = 0;
1265
1266         switch (reg->match.addr) {
1267         case 0: /* Cx231xx - internal registers */
1268                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1269                                 (u16)reg->reg, value, 4);
1270                 reg->val = value[0] | value[1] << 8 |
1271                         value[2] << 16 | value[3] << 24;
1272                 reg->size = 4;
1273                 break;
1274         case 1: /* AFE - read byte */
1275                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1276                                 (u16)reg->reg, 2, &data, 1);
1277                 reg->val = data;
1278                 reg->size = 1;
1279                 break;
1280         case 2: /* Video Block - read byte */
1281                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1282                                 (u16)reg->reg, 2, &data, 1);
1283                 reg->val = data;
1284                 reg->size = 1;
1285                 break;
1286         case 3: /* I2S block - read byte */
1287                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1288                                 (u16)reg->reg, 1, &data, 1);
1289                 reg->val = data;
1290                 reg->size = 1;
1291                 break;
1292         case 4: /* AFE - read dword */
1293                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1294                                 (u16)reg->reg, 2, &data, 4);
1295                 reg->val = data;
1296                 reg->size = 4;
1297                 break;
1298         case 5: /* Video Block - read dword */
1299                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1300                                 (u16)reg->reg, 2, &data, 4);
1301                 reg->val = data;
1302                 reg->size = 4;
1303                 break;
1304         case 6: /* I2S Block - read dword */
1305                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1306                                 (u16)reg->reg, 1, &data, 4);
1307                 reg->val = data;
1308                 reg->size = 4;
1309                 break;
1310         default:
1311                 return -EINVAL;
1312         }
1313         return ret < 0 ? ret : 0;
1314 }
1315
1316 int cx231xx_s_register(struct file *file, void *priv,
1317                              const struct v4l2_dbg_register *reg)
1318 {
1319         struct cx231xx_fh *fh = priv;
1320         struct cx231xx *dev = fh->dev;
1321         int ret;
1322         u8 data[4] = { 0, 0, 0, 0 };
1323
1324         switch (reg->match.addr) {
1325         case 0: /* cx231xx internal registers */
1326                 data[0] = (u8) reg->val;
1327                 data[1] = (u8) (reg->val >> 8);
1328                 data[2] = (u8) (reg->val >> 16);
1329                 data[3] = (u8) (reg->val >> 24);
1330                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1331                                 (u16)reg->reg, data, 4);
1332                 break;
1333         case 1: /* AFE - write byte */
1334                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1335                                 (u16)reg->reg, 2, reg->val, 1);
1336                 break;
1337         case 2: /* Video Block - write byte */
1338                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1339                                 (u16)reg->reg, 2, reg->val, 1);
1340                 break;
1341         case 3: /* I2S block - write byte */
1342                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1343                                 (u16)reg->reg, 1, reg->val, 1);
1344                 break;
1345         case 4: /* AFE - write dword */
1346                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1347                                 (u16)reg->reg, 2, reg->val, 4);
1348                 break;
1349         case 5: /* Video Block - write dword */
1350                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1351                                 (u16)reg->reg, 2, reg->val, 4);
1352                 break;
1353         case 6: /* I2S block - write dword */
1354                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1355                                 (u16)reg->reg, 1, reg->val, 4);
1356                 break;
1357         default:
1358                 return -EINVAL;
1359         }
1360         return ret < 0 ? ret : 0;
1361 }
1362 #endif
1363
1364 static int vidioc_cropcap(struct file *file, void *priv,
1365                           struct v4l2_cropcap *cc)
1366 {
1367         struct cx231xx_fh *fh = priv;
1368         struct cx231xx *dev = fh->dev;
1369
1370         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1371                 return -EINVAL;
1372
1373         cc->bounds.left = 0;
1374         cc->bounds.top = 0;
1375         cc->bounds.width = dev->width;
1376         cc->bounds.height = dev->height;
1377         cc->defrect = cc->bounds;
1378         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1379         cc->pixelaspect.denominator = 59;
1380
1381         return 0;
1382 }
1383
1384 static int vidioc_streamon(struct file *file, void *priv,
1385                            enum v4l2_buf_type type)
1386 {
1387         struct cx231xx_fh *fh = priv;
1388         struct cx231xx *dev = fh->dev;
1389         int rc;
1390
1391         rc = check_dev(dev);
1392         if (rc < 0)
1393                 return rc;
1394
1395         rc = res_get(fh);
1396
1397         if (likely(rc >= 0))
1398                 rc = videobuf_streamon(&fh->vb_vidq);
1399
1400         call_all(dev, video, s_stream, 1);
1401
1402         return rc;
1403 }
1404
1405 static int vidioc_streamoff(struct file *file, void *priv,
1406                             enum v4l2_buf_type type)
1407 {
1408         struct cx231xx_fh *fh = priv;
1409         struct cx231xx *dev = fh->dev;
1410         int rc;
1411
1412         rc = check_dev(dev);
1413         if (rc < 0)
1414                 return rc;
1415
1416         if (type != fh->type)
1417                 return -EINVAL;
1418
1419         cx25840_call(dev, video, s_stream, 0);
1420
1421         videobuf_streamoff(&fh->vb_vidq);
1422         res_free(fh);
1423
1424         return 0;
1425 }
1426
1427 int cx231xx_querycap(struct file *file, void *priv,
1428                            struct v4l2_capability *cap)
1429 {
1430         struct video_device *vdev = video_devdata(file);
1431         struct cx231xx_fh *fh = priv;
1432         struct cx231xx *dev = fh->dev;
1433
1434         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1435         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1436         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1437
1438         if (vdev->vfl_type == VFL_TYPE_RADIO)
1439                 cap->device_caps = V4L2_CAP_RADIO;
1440         else {
1441                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1442                 if (vdev->vfl_type == VFL_TYPE_VBI)
1443                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1444                 else
1445                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1446         }
1447         if (dev->tuner_type != TUNER_ABSENT)
1448                 cap->device_caps |= V4L2_CAP_TUNER;
1449         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1450                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1451                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1452         if (dev->radio_dev)
1453                 cap->capabilities |= V4L2_CAP_RADIO;
1454
1455         return 0;
1456 }
1457
1458 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1459                                    struct v4l2_fmtdesc *f)
1460 {
1461         if (unlikely(f->index >= ARRAY_SIZE(format)))
1462                 return -EINVAL;
1463
1464         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1465         f->pixelformat = format[f->index].fourcc;
1466
1467         return 0;
1468 }
1469
1470 /* RAW VBI ioctls */
1471
1472 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1473                                 struct v4l2_format *f)
1474 {
1475         struct cx231xx_fh *fh = priv;
1476         struct cx231xx *dev = fh->dev;
1477
1478         f->fmt.vbi.sampling_rate = 6750000 * 4;
1479         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1480         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1481         f->fmt.vbi.offset = 0;
1482         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1483             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1484         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1485             PAL_VBI_LINES : NTSC_VBI_LINES;
1486         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1487             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1488         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1489         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1490
1491         return 0;
1492
1493 }
1494
1495 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1496                                   struct v4l2_format *f)
1497 {
1498         struct cx231xx_fh *fh = priv;
1499         struct cx231xx *dev = fh->dev;
1500
1501         f->fmt.vbi.sampling_rate = 6750000 * 4;
1502         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1503         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1504         f->fmt.vbi.offset = 0;
1505         f->fmt.vbi.flags = 0;
1506         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1507             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1508         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1509             PAL_VBI_LINES : NTSC_VBI_LINES;
1510         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1511             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1512         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1513         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1514
1515         return 0;
1516
1517 }
1518
1519 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1520                                   struct v4l2_format *f)
1521 {
1522         struct cx231xx_fh *fh = priv;
1523         struct cx231xx *dev = fh->dev;
1524
1525         if (dev->vbi_stream_on && !fh->stream_on) {
1526                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1527                 return -EBUSY;
1528         }
1529         return vidioc_try_fmt_vbi_cap(file, priv, f);
1530 }
1531
1532 static int vidioc_reqbufs(struct file *file, void *priv,
1533                           struct v4l2_requestbuffers *rb)
1534 {
1535         struct cx231xx_fh *fh = priv;
1536         struct cx231xx *dev = fh->dev;
1537         int rc;
1538
1539         rc = check_dev(dev);
1540         if (rc < 0)
1541                 return rc;
1542
1543         return videobuf_reqbufs(&fh->vb_vidq, rb);
1544 }
1545
1546 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1547 {
1548         struct cx231xx_fh *fh = priv;
1549         struct cx231xx *dev = fh->dev;
1550         int rc;
1551
1552         rc = check_dev(dev);
1553         if (rc < 0)
1554                 return rc;
1555
1556         return videobuf_querybuf(&fh->vb_vidq, b);
1557 }
1558
1559 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1560 {
1561         struct cx231xx_fh *fh = priv;
1562         struct cx231xx *dev = fh->dev;
1563         int rc;
1564
1565         rc = check_dev(dev);
1566         if (rc < 0)
1567                 return rc;
1568
1569         return videobuf_qbuf(&fh->vb_vidq, b);
1570 }
1571
1572 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1573 {
1574         struct cx231xx_fh *fh = priv;
1575         struct cx231xx *dev = fh->dev;
1576         int rc;
1577
1578         rc = check_dev(dev);
1579         if (rc < 0)
1580                 return rc;
1581
1582         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1583 }
1584
1585 /* ----------------------------------------------------------- */
1586 /* RADIO ESPECIFIC IOCTLS                                      */
1587 /* ----------------------------------------------------------- */
1588
1589 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1590 {
1591         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1592
1593         if (t->index)
1594                 return -EINVAL;
1595
1596         strcpy(t->name, "Radio");
1597
1598         call_all(dev, tuner, g_tuner, t);
1599
1600         return 0;
1601 }
1602 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1603 {
1604         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1605
1606         if (t->index)
1607                 return -EINVAL;
1608
1609         call_all(dev, tuner, s_tuner, t);
1610
1611         return 0;
1612 }
1613
1614 /*
1615  * cx231xx_v4l2_open()
1616  * inits the device and starts isoc transfer
1617  */
1618 static int cx231xx_v4l2_open(struct file *filp)
1619 {
1620         int radio = 0;
1621         struct video_device *vdev = video_devdata(filp);
1622         struct cx231xx *dev = video_drvdata(filp);
1623         struct cx231xx_fh *fh;
1624         enum v4l2_buf_type fh_type = 0;
1625
1626         switch (vdev->vfl_type) {
1627         case VFL_TYPE_GRABBER:
1628                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1629                 break;
1630         case VFL_TYPE_VBI:
1631                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1632                 break;
1633         case VFL_TYPE_RADIO:
1634                 radio = 1;
1635                 break;
1636         }
1637
1638         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1639                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1640                          dev->users);
1641
1642 #if 0
1643         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1644         if (errCode < 0) {
1645                 cx231xx_errdev
1646                     ("Device locked on digital mode. Can't open analog\n");
1647                 return -EBUSY;
1648         }
1649 #endif
1650
1651         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1652         if (!fh) {
1653                 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1654                 return -ENOMEM;
1655         }
1656         if (mutex_lock_interruptible(&dev->lock)) {
1657                 kfree(fh);
1658                 return -ERESTARTSYS;
1659         }
1660         fh->dev = dev;
1661         fh->type = fh_type;
1662         filp->private_data = fh;
1663         v4l2_fh_init(&fh->fh, vdev);
1664
1665         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1666                 /* Power up in Analog TV mode */
1667                 if (dev->board.external_av)
1668                         cx231xx_set_power_mode(dev,
1669                                  POLARIS_AVMODE_ENXTERNAL_AV);
1670                 else
1671                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1672
1673 #if 0
1674                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1675 #endif
1676
1677                 /* set video alternate setting */
1678                 cx231xx_set_video_alternate(dev);
1679
1680                 /* Needed, since GPIO might have disabled power of
1681                    some i2c device */
1682                 cx231xx_config_i2c(dev);
1683
1684                 /* device needs to be initialized before isoc transfer */
1685                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1686
1687         }
1688         if (radio) {
1689                 cx231xx_videodbg("video_open: setting radio device\n");
1690
1691                 /* cx231xx_start_radio(dev); */
1692
1693                 call_all(dev, tuner, s_radio);
1694         }
1695
1696         dev->users++;
1697
1698         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1699                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1700                                             NULL, &dev->video_mode.slock,
1701                                             fh->type, V4L2_FIELD_INTERLACED,
1702                                             sizeof(struct cx231xx_buffer),
1703                                             fh, &dev->lock);
1704         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1705                 /* Set the required alternate setting  VBI interface works in
1706                    Bulk mode only */
1707                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1708
1709                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1710                                             NULL, &dev->vbi_mode.slock,
1711                                             fh->type, V4L2_FIELD_SEQ_TB,
1712                                             sizeof(struct cx231xx_buffer),
1713                                             fh, &dev->lock);
1714         }
1715         mutex_unlock(&dev->lock);
1716         v4l2_fh_add(&fh->fh);
1717
1718         return 0;
1719 }
1720
1721 /*
1722  * cx231xx_realease_resources()
1723  * unregisters the v4l2,i2c and usb devices
1724  * called when the device gets disconected or at module unload
1725 */
1726 void cx231xx_release_analog_resources(struct cx231xx *dev)
1727 {
1728
1729         /*FIXME: I2C IR should be disconnected */
1730
1731         if (dev->radio_dev) {
1732                 if (video_is_registered(dev->radio_dev))
1733                         video_unregister_device(dev->radio_dev);
1734                 else
1735                         video_device_release(dev->radio_dev);
1736                 dev->radio_dev = NULL;
1737         }
1738         if (dev->vbi_dev) {
1739                 cx231xx_info("V4L2 device %s deregistered\n",
1740                              video_device_node_name(dev->vbi_dev));
1741                 if (video_is_registered(dev->vbi_dev))
1742                         video_unregister_device(dev->vbi_dev);
1743                 else
1744                         video_device_release(dev->vbi_dev);
1745                 dev->vbi_dev = NULL;
1746         }
1747         if (dev->vdev) {
1748                 cx231xx_info("V4L2 device %s deregistered\n",
1749                              video_device_node_name(dev->vdev));
1750
1751                 if (dev->board.has_417)
1752                         cx231xx_417_unregister(dev);
1753
1754                 if (video_is_registered(dev->vdev))
1755                         video_unregister_device(dev->vdev);
1756                 else
1757                         video_device_release(dev->vdev);
1758                 dev->vdev = NULL;
1759         }
1760         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1761         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1762 }
1763
1764 /*
1765  * cx231xx_close()
1766  * stops streaming and deallocates all resources allocated by the v4l2
1767  * calls and ioctls
1768  */
1769 static int cx231xx_close(struct file *filp)
1770 {
1771         struct cx231xx_fh *fh = filp->private_data;
1772         struct cx231xx *dev = fh->dev;
1773
1774         cx231xx_videodbg("users=%d\n", dev->users);
1775
1776         cx231xx_videodbg("users=%d\n", dev->users);
1777         if (res_check(fh))
1778                 res_free(fh);
1779
1780         /*
1781          * To workaround error number=-71 on EP0 for VideoGrabber,
1782          *       need exclude following.
1783          * FIXME: It is probably safe to remove most of these, as we're
1784          * now avoiding the alternate setting for INDEX_VANC
1785          */
1786         if (!dev->board.no_alt_vanc)
1787                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1788                         videobuf_stop(&fh->vb_vidq);
1789                         videobuf_mmap_free(&fh->vb_vidq);
1790
1791                         /* the device is already disconnect,
1792                            free the remaining resources */
1793                         if (dev->state & DEV_DISCONNECTED) {
1794                                 if (atomic_read(&dev->devlist_count) > 0) {
1795                                         cx231xx_release_resources(dev);
1796                                         fh->dev = NULL;
1797                                         return 0;
1798                                 }
1799                                 return 0;
1800                         }
1801
1802                         /* do this before setting alternate! */
1803                         cx231xx_uninit_vbi_isoc(dev);
1804
1805                         /* set alternate 0 */
1806                         if (!dev->vbi_or_sliced_cc_mode)
1807                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1808                         else
1809                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1810
1811                         v4l2_fh_del(&fh->fh);
1812                         v4l2_fh_exit(&fh->fh);
1813                         kfree(fh);
1814                         dev->users--;
1815                         wake_up_interruptible_nr(&dev->open, 1);
1816                         return 0;
1817                 }
1818
1819         v4l2_fh_del(&fh->fh);
1820         dev->users--;
1821         if (!dev->users) {
1822                 videobuf_stop(&fh->vb_vidq);
1823                 videobuf_mmap_free(&fh->vb_vidq);
1824
1825                 /* the device is already disconnect,
1826                    free the remaining resources */
1827                 if (dev->state & DEV_DISCONNECTED) {
1828                         cx231xx_release_resources(dev);
1829                         fh->dev = NULL;
1830                         return 0;
1831                 }
1832
1833                 /* Save some power by putting tuner to sleep */
1834                 call_all(dev, core, s_power, 0);
1835
1836                 /* do this before setting alternate! */
1837                 if (dev->USE_ISO)
1838                         cx231xx_uninit_isoc(dev);
1839                 else
1840                         cx231xx_uninit_bulk(dev);
1841                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1842
1843                 /* set alternate 0 */
1844                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1845         }
1846         v4l2_fh_exit(&fh->fh);
1847         kfree(fh);
1848         wake_up_interruptible_nr(&dev->open, 1);
1849         return 0;
1850 }
1851
1852 static int cx231xx_v4l2_close(struct file *filp)
1853 {
1854         struct cx231xx_fh *fh = filp->private_data;
1855         struct cx231xx *dev = fh->dev;
1856         int rc;
1857
1858         mutex_lock(&dev->lock);
1859         rc = cx231xx_close(filp);
1860         mutex_unlock(&dev->lock);
1861         return rc;
1862 }
1863
1864 /*
1865  * cx231xx_v4l2_read()
1866  * will allocate buffers when called for the first time
1867  */
1868 static ssize_t
1869 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1870                   loff_t *pos)
1871 {
1872         struct cx231xx_fh *fh = filp->private_data;
1873         struct cx231xx *dev = fh->dev;
1874         int rc;
1875
1876         rc = check_dev(dev);
1877         if (rc < 0)
1878                 return rc;
1879
1880         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1881             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1882                 rc = res_get(fh);
1883
1884                 if (unlikely(rc < 0))
1885                         return rc;
1886
1887                 if (mutex_lock_interruptible(&dev->lock))
1888                         return -ERESTARTSYS;
1889                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1890                                             filp->f_flags & O_NONBLOCK);
1891                 mutex_unlock(&dev->lock);
1892                 return rc;
1893         }
1894         return 0;
1895 }
1896
1897 /*
1898  * cx231xx_v4l2_poll()
1899  * will allocate buffers when called for the first time
1900  */
1901 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
1902 {
1903         unsigned long req_events = poll_requested_events(wait);
1904         struct cx231xx_fh *fh = filp->private_data;
1905         struct cx231xx *dev = fh->dev;
1906         unsigned res = 0;
1907         int rc;
1908
1909         rc = check_dev(dev);
1910         if (rc < 0)
1911                 return POLLERR;
1912
1913         rc = res_get(fh);
1914
1915         if (unlikely(rc < 0))
1916                 return POLLERR;
1917
1918         if (v4l2_event_pending(&fh->fh))
1919                 res |= POLLPRI;
1920         else
1921                 poll_wait(filp, &fh->fh.wait, wait);
1922
1923         if (!(req_events & (POLLIN | POLLRDNORM)))
1924                 return res;
1925
1926         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
1927             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
1928                 mutex_lock(&dev->lock);
1929                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1930                 mutex_unlock(&dev->lock);
1931                 return res;
1932         }
1933         return res | POLLERR;
1934 }
1935
1936 /*
1937  * cx231xx_v4l2_mmap()
1938  */
1939 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1940 {
1941         struct cx231xx_fh *fh = filp->private_data;
1942         struct cx231xx *dev = fh->dev;
1943         int rc;
1944
1945         rc = check_dev(dev);
1946         if (rc < 0)
1947                 return rc;
1948
1949         rc = res_get(fh);
1950
1951         if (unlikely(rc < 0))
1952                 return rc;
1953
1954         if (mutex_lock_interruptible(&dev->lock))
1955                 return -ERESTARTSYS;
1956         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1957         mutex_unlock(&dev->lock);
1958
1959         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1960                          (unsigned long)vma->vm_start,
1961                          (unsigned long)vma->vm_end -
1962                          (unsigned long)vma->vm_start, rc);
1963
1964         return rc;
1965 }
1966
1967 static const struct v4l2_file_operations cx231xx_v4l_fops = {
1968         .owner   = THIS_MODULE,
1969         .open    = cx231xx_v4l2_open,
1970         .release = cx231xx_v4l2_close,
1971         .read    = cx231xx_v4l2_read,
1972         .poll    = cx231xx_v4l2_poll,
1973         .mmap    = cx231xx_v4l2_mmap,
1974         .unlocked_ioctl   = video_ioctl2,
1975 };
1976
1977 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1978         .vidioc_querycap               = cx231xx_querycap,
1979         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
1980         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
1981         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
1982         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
1983         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
1984         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
1985         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
1986         .vidioc_cropcap                = vidioc_cropcap,
1987         .vidioc_reqbufs                = vidioc_reqbufs,
1988         .vidioc_querybuf               = vidioc_querybuf,
1989         .vidioc_qbuf                   = vidioc_qbuf,
1990         .vidioc_dqbuf                  = vidioc_dqbuf,
1991         .vidioc_s_std                  = vidioc_s_std,
1992         .vidioc_g_std                  = vidioc_g_std,
1993         .vidioc_enum_input             = cx231xx_enum_input,
1994         .vidioc_g_input                = cx231xx_g_input,
1995         .vidioc_s_input                = cx231xx_s_input,
1996         .vidioc_streamon               = vidioc_streamon,
1997         .vidioc_streamoff              = vidioc_streamoff,
1998         .vidioc_g_tuner                = cx231xx_g_tuner,
1999         .vidioc_s_tuner                = cx231xx_s_tuner,
2000         .vidioc_g_frequency            = cx231xx_g_frequency,
2001         .vidioc_s_frequency            = cx231xx_s_frequency,
2002 #ifdef CONFIG_VIDEO_ADV_DEBUG
2003         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2004         .vidioc_g_register             = cx231xx_g_register,
2005         .vidioc_s_register             = cx231xx_s_register,
2006 #endif
2007         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2008         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2009 };
2010
2011 static struct video_device cx231xx_vbi_template;
2012
2013 static const struct video_device cx231xx_video_template = {
2014         .fops         = &cx231xx_v4l_fops,
2015         .release      = video_device_release,
2016         .ioctl_ops    = &video_ioctl_ops,
2017         .tvnorms      = V4L2_STD_ALL,
2018 };
2019
2020 static const struct v4l2_file_operations radio_fops = {
2021         .owner   = THIS_MODULE,
2022         .open   = cx231xx_v4l2_open,
2023         .release = cx231xx_v4l2_close,
2024         .poll = v4l2_ctrl_poll,
2025         .unlocked_ioctl = video_ioctl2,
2026 };
2027
2028 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2029         .vidioc_querycap    = cx231xx_querycap,
2030         .vidioc_g_tuner     = radio_g_tuner,
2031         .vidioc_s_tuner     = radio_s_tuner,
2032         .vidioc_g_frequency = cx231xx_g_frequency,
2033         .vidioc_s_frequency = cx231xx_s_frequency,
2034 #ifdef CONFIG_VIDEO_ADV_DEBUG
2035         .vidioc_g_chip_info = cx231xx_g_chip_info,
2036         .vidioc_g_register  = cx231xx_g_register,
2037         .vidioc_s_register  = cx231xx_s_register,
2038 #endif
2039         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2040         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2041 };
2042
2043 static struct video_device cx231xx_radio_template = {
2044         .name      = "cx231xx-radio",
2045         .fops      = &radio_fops,
2046         .ioctl_ops = &radio_ioctl_ops,
2047 };
2048
2049 /******************************** usb interface ******************************/
2050
2051 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2052                 const struct video_device
2053                 *template, const char *type_name)
2054 {
2055         struct video_device *vfd;
2056
2057         vfd = video_device_alloc();
2058         if (NULL == vfd)
2059                 return NULL;
2060
2061         *vfd = *template;
2062         vfd->v4l2_dev = &dev->v4l2_dev;
2063         vfd->release = video_device_release;
2064         vfd->debug = video_debug;
2065         vfd->lock = &dev->lock;
2066
2067         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2068
2069         video_set_drvdata(vfd, dev);
2070         if (dev->tuner_type == TUNER_ABSENT) {
2071                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2072                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2073                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2074                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2075         }
2076         return vfd;
2077 }
2078
2079 int cx231xx_register_analog_devices(struct cx231xx *dev)
2080 {
2081         int ret;
2082
2083         cx231xx_info("%s: v4l2 driver version %s\n",
2084                      dev->name, 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                 cx231xx_errdev("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                 cx231xx_errdev("unable to register video device (error=%i).\n",
2132                                ret);
2133                 return ret;
2134         }
2135
2136         cx231xx_info("%s/0: registered device %s [v4l2]\n",
2137                      dev->name, video_device_node_name(dev->vdev));
2138
2139         /* Initialize VBI template */
2140         cx231xx_vbi_template = cx231xx_video_template;
2141         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2142
2143         /* Allocate and fill vbi video_device struct */
2144         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2145
2146         if (!dev->vbi_dev) {
2147                 cx231xx_errdev("cannot allocate video_device.\n");
2148                 return -ENODEV;
2149         }
2150         dev->vbi_dev->ctrl_handler = &dev->ctrl_handler;
2151         /* register v4l2 vbi video_device */
2152         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2153                                     vbi_nr[dev->devno]);
2154         if (ret < 0) {
2155                 cx231xx_errdev("unable to register vbi device\n");
2156                 return ret;
2157         }
2158
2159         cx231xx_info("%s/0: registered device %s\n",
2160                      dev->name, video_device_node_name(dev->vbi_dev));
2161
2162         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2163                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2164                                                    "radio");
2165                 if (!dev->radio_dev) {
2166                         cx231xx_errdev("cannot allocate video_device.\n");
2167                         return -ENODEV;
2168                 }
2169                 dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
2170                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2171                                             radio_nr[dev->devno]);
2172                 if (ret < 0) {
2173                         cx231xx_errdev("can't register radio device\n");
2174                         return ret;
2175                 }
2176                 cx231xx_info("Registered radio device as %s\n",
2177                              video_device_node_name(dev->radio_dev));
2178         }
2179
2180         cx231xx_info("V4L2 device registered as %s and %s\n",
2181                      video_device_node_name(dev->vdev),
2182                      video_device_node_name(dev->vbi_dev));
2183
2184         return 0;
2185 }