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   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/version.h>
  33 #include <linux/mm.h>
  34 #include <linux/mutex.h>
  35
  36 #include <media/v4l2-common.h>
  37 #include <media/v4l2-ioctl.h>
  38 #include <media/v4l2-chip-ident.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_CODE            KERNEL_VERSION(0, 0, 1)
  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
  73 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  74 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  75 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  76 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  77
  78 module_param_array(card, int, NULL, 0444);
  79 module_param_array(video_nr, int, NULL, 0444);
  80 module_param_array(vbi_nr, int, NULL, 0444);
  81 module_param_array(radio_nr, int, NULL, 0444);
  82
  83 MODULE_PARM_DESC(card, "card type");
  84 MODULE_PARM_DESC(video_nr, "video device numbers");
  85 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  86 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  87
  88 static unsigned int video_debug;
  89 module_param(video_debug, int, 0644);
  90 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  91
  92 /* supported video standards */
  93 static struct cx231xx_fmt format[] = {
  94         {
  95          .name = "16bpp YUY2, 4:2:2, packed",
  96          .fourcc = V4L2_PIX_FMT_YUYV,
  97          .depth = 16,
  98          .reg = 0,
  99          },
 100 };
 101
 102 /* supported controls */
 103 /* Common to all boards */
 104
 105 /* ------------------------------------------------------------------- */
 106
 107 static const struct v4l2_queryctrl no_ctl = {
 108         .name = "42",
 109         .flags = V4L2_CTRL_FLAG_DISABLED,
 110 };
 111
 112 static struct cx231xx_ctrl cx231xx_ctls[] = {
 113         /* --- video --- */
 114         {
 115                 .v = {
 116                         .id = V4L2_CID_BRIGHTNESS,
 117                         .name = "Brightness",
 118                         .minimum = 0x00,
 119                         .maximum = 0xff,
 120                         .step = 1,
 121                         .default_value = 0x7f,
 122                         .type = V4L2_CTRL_TYPE_INTEGER,
 123                 },
 124                 .off = 128,
 125                 .reg = LUMA_CTRL,
 126                 .mask = 0x00ff,
 127                 .shift = 0,
 128         }, {
 129                 .v = {
 130                         .id = V4L2_CID_CONTRAST,
 131                         .name = "Contrast",
 132                         .minimum = 0,
 133                         .maximum = 0xff,
 134                         .step = 1,
 135                         .default_value = 0x3f,
 136                         .type = V4L2_CTRL_TYPE_INTEGER,
 137                 },
 138                 .off = 0,
 139                 .reg = LUMA_CTRL,
 140                 .mask = 0xff00,
 141                 .shift = 8,
 142         }, {
 143                 .v = {
 144                         .id = V4L2_CID_HUE,
 145                         .name = "Hue",
 146                         .minimum = 0,
 147                         .maximum = 0xff,
 148                         .step = 1,
 149                         .default_value = 0x7f,
 150                         .type = V4L2_CTRL_TYPE_INTEGER,
 151                 },
 152                 .off = 128,
 153                 .reg = CHROMA_CTRL,
 154                 .mask = 0xff0000,
 155                 .shift = 16,
 156         }, {
 157         /* strictly, this only describes only U saturation.
 158         * V saturation is handled specially through code.
 159         */
 160                 .v = {
 161                         .id = V4L2_CID_SATURATION,
 162                         .name = "Saturation",
 163                         .minimum = 0,
 164                         .maximum = 0xff,
 165                         .step = 1,
 166                         .default_value = 0x7f,
 167                         .type = V4L2_CTRL_TYPE_INTEGER,
 168                 },
 169                 .off = 0,
 170                 .reg = CHROMA_CTRL,
 171                 .mask = 0x00ff,
 172                 .shift = 0,
 173         }, {
 174                 /* --- audio --- */
 175                 .v = {
 176                         .id = V4L2_CID_AUDIO_MUTE,
 177                         .name = "Mute",
 178                         .minimum = 0,
 179                         .maximum = 1,
 180                         .default_value = 1,
 181                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 182                 },
 183                 .reg = PATH1_CTL1,
 184                 .mask = (0x1f << 24),
 185                 .shift = 24,
 186         }, {
 187                 .v = {
 188                         .id = V4L2_CID_AUDIO_VOLUME,
 189                         .name = "Volume",
 190                         .minimum = 0,
 191                         .maximum = 0x3f,
 192                         .step = 1,
 193                         .default_value = 0x3f,
 194                         .type = V4L2_CTRL_TYPE_INTEGER,
 195                 },
 196                 .reg = PATH1_VOL_CTL,
 197                 .mask = 0xff,
 198                 .shift = 0,
 199         }
 200 };
 201 static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls);
 202
 203 static const u32 cx231xx_user_ctrls[] = {
 204         V4L2_CID_USER_CLASS,
 205         V4L2_CID_BRIGHTNESS,
 206         V4L2_CID_CONTRAST,
 207         V4L2_CID_SATURATION,
 208         V4L2_CID_HUE,
 209         V4L2_CID_AUDIO_VOLUME,
 210 #if 0
 211         V4L2_CID_AUDIO_BALANCE,
 212 #endif
 213         V4L2_CID_AUDIO_MUTE,
 214         0
 215 };
 216
 217 static const u32 *ctrl_classes[] = {
 218         cx231xx_user_ctrls,
 219         NULL
 220 };
 221
 222 /* ------------------------------------------------------------------
 223         Video buffer and parser functions
 224    ------------------------------------------------------------------*/
 225
 226 /*
 227  * Announces that a buffer were filled and request the next
 228  */
 229 static inline void buffer_filled(struct cx231xx *dev,
 230                                  struct cx231xx_dmaqueue *dma_q,
 231                                  struct cx231xx_buffer *buf)
 232 {
 233         /* Advice that buffer was filled */
 234         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 235         buf->vb.state = VIDEOBUF_DONE;
 236         buf->vb.field_count++;
 237         do_gettimeofday(&buf->vb.ts);
 238
 239         dev->video_mode.isoc_ctl.buf = NULL;
 240
 241         list_del(&buf->vb.queue);
 242         wake_up(&buf->vb.done);
 243 }
 244
 245 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 246 {
 247         char *errmsg = "Unknown";
 248
 249         switch (status) {
 250         case -ENOENT:
 251                 errmsg = "unlinked synchronuously";
 252                 break;
 253         case -ECONNRESET:
 254                 errmsg = "unlinked asynchronuously";
 255                 break;
 256         case -ENOSR:
 257                 errmsg = "Buffer error (overrun)";
 258                 break;
 259         case -EPIPE:
 260                 errmsg = "Stalled (device not responding)";
 261                 break;
 262         case -EOVERFLOW:
 263                 errmsg = "Babble (bad cable?)";
 264                 break;
 265         case -EPROTO:
 266                 errmsg = "Bit-stuff error (bad cable?)";
 267                 break;
 268         case -EILSEQ:
 269                 errmsg = "CRC/Timeout (could be anything)";
 270                 break;
 271         case -ETIME:
 272                 errmsg = "Device does not respond";
 273                 break;
 274         }
 275         if (packet < 0) {
 276                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 277         } else {
 278                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 279                                 packet, status, errmsg);
 280         }
 281 }
 282
 283 /*
 284  * video-buf generic routine to get the next available buffer
 285  */
 286 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 287                                 struct cx231xx_buffer **buf)
 288 {
 289         struct cx231xx_video_mode *vmode =
 290             container_of(dma_q, struct cx231xx_video_mode, vidq);
 291         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 292
 293         char *outp;
 294
 295         if (list_empty(&dma_q->active)) {
 296                 cx231xx_isocdbg("No active queue to serve\n");
 297                 dev->video_mode.isoc_ctl.buf = NULL;
 298                 *buf = NULL;
 299                 return;
 300         }
 301
 302         /* Get the next buffer */
 303         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 304
 305         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 306         outp = videobuf_to_vmalloc(&(*buf)->vb);
 307         memset(outp, 0, (*buf)->vb.size);
 308
 309         dev->video_mode.isoc_ctl.buf = *buf;
 310
 311         return;
 312 }
 313
 314 /*
 315  * Controls the isoc copy of each urb packet
 316  */
 317 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 318 {
 319         struct cx231xx_buffer *buf;
 320         struct cx231xx_dmaqueue *dma_q = urb->context;
 321         unsigned char *outp = NULL;
 322         int i, rc = 1;
 323         unsigned char *p_buffer;
 324         u32 bytes_parsed = 0, buffer_size = 0;
 325         u8 sav_eav = 0;
 326
 327         if (!dev)
 328                 return 0;
 329
 330         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 331                 return 0;
 332
 333         if (urb->status < 0) {
 334                 print_err_status(dev, -1, urb->status);
 335                 if (urb->status == -ENOENT)
 336                         return 0;
 337         }
 338
 339         buf = dev->video_mode.isoc_ctl.buf;
 340         if (buf != NULL)
 341                 outp = videobuf_to_vmalloc(&buf->vb);
 342
 343         for (i = 0; i < urb->number_of_packets; i++) {
 344                 int status = urb->iso_frame_desc[i].status;
 345
 346                 if (status < 0) {
 347                         print_err_status(dev, i, status);
 348                         if (urb->iso_frame_desc[i].status != -EPROTO)
 349                                 continue;
 350                 }
 351
 352                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 353                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 354                         continue;
 355                 }
 356                 if (urb->iso_frame_desc[i].actual_length >
 357                     dev->video_mode.max_pkt_size) {
 358                         cx231xx_isocdbg("packet bigger than packet size");
 359                         continue;
 360                 }
 361
 362                 /*  get buffer pointer and length */
 363                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 364                 buffer_size = urb->iso_frame_desc[i].actual_length;
 365                 bytes_parsed = 0;
 366
 367                 if (dma_q->is_partial_line) {
 368                         /* Handle the case of a partial line */
 369                         sav_eav = dma_q->last_sav;
 370                 } else {
 371                         /* Check for a SAV/EAV overlapping
 372                                 the buffer boundary */
 373                         sav_eav =
 374                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 375                                                           dma_q->partial_buf,
 376                                                           &bytes_parsed);
 377                 }
 378
 379                 sav_eav &= 0xF0;
 380                 /* Get the first line if we have some portion of an SAV/EAV from
 381                    the last buffer or a partial line  */
 382                 if (sav_eav) {
 383                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 384                                 sav_eav,        /* SAV/EAV */
 385                                 p_buffer + bytes_parsed,        /* p_buffer */
 386                                 buffer_size - bytes_parsed);/* buf size */
 387                 }
 388
 389                 /* Now parse data that is completely in this buffer */
 390                 /* dma_q->is_partial_line = 0;  */
 391
 392                 while (bytes_parsed < buffer_size) {
 393                         u32 bytes_used = 0;
 394
 395                         sav_eav = cx231xx_find_next_SAV_EAV(
 396                                 p_buffer + bytes_parsed,        /* p_buffer */
 397                                 buffer_size - bytes_parsed,     /* buf size */
 398                                 &bytes_used);/* bytes used to get SAV/EAV */
 399
 400                         bytes_parsed += bytes_used;
 401
 402                         sav_eav &= 0xF0;
 403                         if (sav_eav && (bytes_parsed < buffer_size)) {
 404                                 bytes_parsed += cx231xx_get_video_line(dev,
 405                                         dma_q, sav_eav, /* SAV/EAV */
 406                                         p_buffer + bytes_parsed,/* p_buffer */
 407                                         buffer_size - bytes_parsed);/*buf size*/
 408                         }
 409                 }
 410
 411                 /* Save the last four bytes of the buffer so we can check the
 412                    buffer boundary condition next time */
 413                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 414                 bytes_parsed = 0;
 415
 416         }
 417         return rc;
 418 }
 419
 420 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 421                                  u32 *p_bytes_used)
 422 {
 423         u32 bytes_used;
 424         u8 boundary_bytes[8];
 425         u8 sav_eav = 0;
 426
 427         *p_bytes_used = 0;
 428
 429         /* Create an array of the last 4 bytes of the last buffer and the first
 430            4 bytes of the current buffer. */
 431
 432         memcpy(boundary_bytes, partial_buf, 4);
 433         memcpy(boundary_bytes + 4, p_buffer, 4);
 434
 435         /* Check for the SAV/EAV in the boundary buffer */
 436         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 437                                             &bytes_used);
 438
 439         if (sav_eav) {
 440                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 441                    only those used in the new buffer */
 442                 *p_bytes_used = bytes_used - 4;
 443         }
 444
 445         return sav_eav;
 446 }
 447
 448 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 449 {
 450         u32 i;
 451         u8 sav_eav = 0;
 452
 453         /*
 454          * Don't search if the buffer size is less than 4.  It causes a page
 455          * fault since buffer_size - 4 evaluates to a large number in that
 456          * case.
 457          */
 458         if (buffer_size < 4) {
 459                 *p_bytes_used = buffer_size;
 460                 return 0;
 461         }
 462
 463         for (i = 0; i < (buffer_size - 3); i++) {
 464
 465                 if ((p_buffer[i] == 0xFF) &&
 466                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 467
 468                         *p_bytes_used = i + 4;
 469                         sav_eav = p_buffer[i + 3];
 470                         return sav_eav;
 471                 }
 472         }
 473
 474         *p_bytes_used = buffer_size;
 475         return 0;
 476 }
 477
 478 u32 cx231xx_get_video_line(struct cx231xx *dev,
 479                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 480                            u8 *p_buffer, u32 buffer_size)
 481 {
 482         u32 bytes_copied = 0;
 483         int current_field = -1;
 484
 485         switch (sav_eav) {
 486         case SAV_ACTIVE_VIDEO_FIELD1:
 487                 /* looking for skipped line which occurred in PAL 720x480 mode.
 488                    In this case, there will be no active data contained
 489                    between the SAV and EAV */
 490                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 491                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 492                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 493                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 494                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 495                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 496                         return bytes_copied;
 497                 current_field = 1;
 498                 break;
 499
 500         case SAV_ACTIVE_VIDEO_FIELD2:
 501                 /* looking for skipped line which occurred in PAL 720x480 mode.
 502                    In this case, there will be no active data contained between
 503                    the SAV and EAV */
 504                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 505                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 506                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 507                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 508                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 509                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 510                         return bytes_copied;
 511                 current_field = 2;
 512                 break;
 513         }
 514
 515         dma_q->last_sav = sav_eav;
 516
 517         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 518                                                buffer_size, current_field);
 519
 520         return bytes_copied;
 521 }
 522
 523 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 524                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 525                             u32 length, int field_number)
 526 {
 527         u32 bytes_to_copy;
 528         struct cx231xx_buffer *buf;
 529         u32 _line_size = dev->width * 2;
 530
 531         if (dma_q->current_field != field_number)
 532                 cx231xx_reset_video_buffer(dev, dma_q);
 533
 534         /* get the buffer pointer */
 535         buf = dev->video_mode.isoc_ctl.buf;
 536
 537         /* Remember the field number for next time */
 538         dma_q->current_field = field_number;
 539
 540         bytes_to_copy = dma_q->bytes_left_in_line;
 541         if (bytes_to_copy > length)
 542                 bytes_to_copy = length;
 543
 544         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 545                 dma_q->bytes_left_in_line -= bytes_to_copy;
 546                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 547                                           0 : 1;
 548                 return 0;
 549         }
 550
 551         dma_q->is_partial_line = 1;
 552
 553         /* If we don't have a buffer, just return the number of bytes we would
 554            have copied if we had a buffer. */
 555         if (!buf) {
 556                 dma_q->bytes_left_in_line -= bytes_to_copy;
 557                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 558                                          ? 0 : 1;
 559                 return bytes_to_copy;
 560         }
 561
 562         /* copy the data to video buffer */
 563         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 564
 565         dma_q->pos += bytes_to_copy;
 566         dma_q->bytes_left_in_line -= bytes_to_copy;
 567
 568         if (dma_q->bytes_left_in_line == 0) {
 569                 dma_q->bytes_left_in_line = _line_size;
 570                 dma_q->lines_completed++;
 571                 dma_q->is_partial_line = 0;
 572
 573                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 574                         buffer_filled(dev, dma_q, buf);
 575
 576                         dma_q->pos = 0;
 577                         buf = NULL;
 578                         dma_q->lines_completed = 0;
 579                 }
 580         }
 581
 582         return bytes_to_copy;
 583 }
 584
 585 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 586                                 struct cx231xx_dmaqueue *dma_q)
 587 {
 588         struct cx231xx_buffer *buf;
 589
 590         /* handle the switch from field 1 to field 2 */
 591         if (dma_q->current_field == 1) {
 592                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 593                         dma_q->field1_done = 1;
 594                 else
 595                         dma_q->field1_done = 0;
 596         }
 597
 598         buf = dev->video_mode.isoc_ctl.buf;
 599
 600         if (buf == NULL) {
 601                 u8 *outp = NULL;
 602                 /* first try to get the buffer */
 603                 get_next_buf(dma_q, &buf);
 604
 605                 if (buf)
 606                         outp = videobuf_to_vmalloc(&buf->vb);
 607
 608                 dma_q->pos = 0;
 609                 dma_q->field1_done = 0;
 610                 dma_q->current_field = -1;
 611         }
 612
 613         /* reset the counters */
 614         dma_q->bytes_left_in_line = dev->width << 1;
 615         dma_q->lines_completed = 0;
 616 }
 617
 618 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 619                     u8 *p_buffer, u32 bytes_to_copy)
 620 {
 621         u8 *p_out_buffer = NULL;
 622         u32 current_line_bytes_copied = 0;
 623         struct cx231xx_buffer *buf;
 624         u32 _line_size = dev->width << 1;
 625         void *startwrite;
 626         int offset, lencopy;
 627
 628         buf = dev->video_mode.isoc_ctl.buf;
 629
 630         if (buf == NULL)
 631                 return -1;
 632
 633         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 634
 635         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 636
 637         /* Offset field 2 one line from the top of the buffer */
 638         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 639
 640         /* Offset for field 2 */
 641         startwrite = p_out_buffer + offset;
 642
 643         /* lines already completed in the current field */
 644         startwrite += (dma_q->lines_completed * _line_size * 2);
 645
 646         /* bytes already completed in the current line */
 647         startwrite += current_line_bytes_copied;
 648
 649         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 650                   bytes_to_copy : dma_q->bytes_left_in_line;
 651
 652         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 653                 return 0;
 654
 655         /* The below copies the UYVY data straight into video buffer */
 656         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 657
 658         return 0;
 659 }
 660
 661 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 662 {
 663         u16 i;
 664
 665         if (len <= 0)
 666                 return;
 667
 668         for (i = 0; i < len / 2; i++)
 669                 to[i] = (from[i] << 8) | (from[i] >> 8);
 670 }
 671
 672 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 673 {
 674         u8 buffer_complete = 0;
 675
 676         /* Dual field stream */
 677         buffer_complete = ((dma_q->current_field == 2) &&
 678                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 679                             dma_q->field1_done);
 680
 681         return buffer_complete;
 682 }
 683
 684 /* ------------------------------------------------------------------
 685         Videobuf operations
 686    ------------------------------------------------------------------*/
 687
 688 static int
 689 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 690 {
 691         struct cx231xx_fh *fh = vq->priv_data;
 692         struct cx231xx *dev = fh->dev;
 693         struct v4l2_frequency f;
 694
 695         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 696         if (0 == *count)
 697                 *count = CX231XX_DEF_BUF;
 698
 699         if (*count < CX231XX_MIN_BUF)
 700                 *count = CX231XX_MIN_BUF;
 701
 702         /* Ask tuner to go to analog mode */
 703         memset(&f, 0, sizeof(f));
 704         f.frequency = dev->ctl_freq;
 705         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 706
 707         call_all(dev, tuner, s_frequency, &f);
 708
 709         return 0;
 710 }
 711
 712 /* This is called *without* dev->slock held; please keep it that way */
 713 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 714 {
 715         struct cx231xx_fh *fh = vq->priv_data;
 716         struct cx231xx *dev = fh->dev;
 717         unsigned long flags = 0;
 718
 719         if (in_interrupt())
 720                 BUG();
 721
 722         /* We used to wait for the buffer to finish here, but this didn't work
 723            because, as we were keeping the state as VIDEOBUF_QUEUED,
 724            videobuf_queue_cancel marked it as finished for us.
 725            (Also, it could wedge forever if the hardware was misconfigured.)
 726
 727            This should be safe; by the time we get here, the buffer isn't
 728            queued anymore. If we ever start marking the buffers as
 729            VIDEOBUF_ACTIVE, it won't be, though.
 730          */
 731         spin_lock_irqsave(&dev->video_mode.slock, flags);
 732         if (dev->video_mode.isoc_ctl.buf == buf)
 733                 dev->video_mode.isoc_ctl.buf = NULL;
 734         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 735
 736         videobuf_vmalloc_free(&buf->vb);
 737         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 738 }
 739
 740 static int
 741 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 742                enum v4l2_field field)
 743 {
 744         struct cx231xx_fh *fh = vq->priv_data;
 745         struct cx231xx_buffer *buf =
 746             container_of(vb, struct cx231xx_buffer, vb);
 747         struct cx231xx *dev = fh->dev;
 748         int rc = 0, urb_init = 0;
 749
 750         /* The only currently supported format is 16 bits/pixel */
 751         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 752                         + 7) >> 3;
 753         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 754                 return -EINVAL;
 755
 756         buf->vb.width = dev->width;
 757         buf->vb.height = dev->height;
 758         buf->vb.field = field;
 759
 760         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 761                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 762                 if (rc < 0)
 763                         goto fail;
 764         }
 765
 766         if (!dev->video_mode.isoc_ctl.num_bufs)
 767                 urb_init = 1;
 768
 769         if (urb_init) {
 770                 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 771                                        CX231XX_NUM_BUFS,
 772                                        dev->video_mode.max_pkt_size,
 773                                        cx231xx_isoc_copy);
 774                 if (rc < 0)
 775                         goto fail;
 776         }
 777
 778         buf->vb.state = VIDEOBUF_PREPARED;
 779         return 0;
 780
 781 fail:
 782         free_buffer(vq, buf);
 783         return rc;
 784 }
 785
 786 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 787 {
 788         struct cx231xx_buffer *buf =
 789             container_of(vb, struct cx231xx_buffer, vb);
 790         struct cx231xx_fh *fh = vq->priv_data;
 791         struct cx231xx *dev = fh->dev;
 792         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 793
 794         buf->vb.state = VIDEOBUF_QUEUED;
 795         list_add_tail(&buf->vb.queue, &vidq->active);
 796
 797 }
 798
 799 static void buffer_release(struct videobuf_queue *vq,
 800                            struct videobuf_buffer *vb)
 801 {
 802         struct cx231xx_buffer *buf =
 803             container_of(vb, struct cx231xx_buffer, vb);
 804         struct cx231xx_fh *fh = vq->priv_data;
 805         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 806
 807         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 808
 809         free_buffer(vq, buf);
 810 }
 811
 812 static struct videobuf_queue_ops cx231xx_video_qops = {
 813         .buf_setup = buffer_setup,
 814         .buf_prepare = buffer_prepare,
 815         .buf_queue = buffer_queue,
 816         .buf_release = buffer_release,
 817 };
 818
 819 /*********************  v4l2 interface  **************************************/
 820
 821 void video_mux(struct cx231xx *dev, int index)
 822 {
 823
 824         struct v4l2_routing route;
 825
 826         route.input = INPUT(index)->vmux;
 827         route.output = 0;
 828         dev->video_input = index;
 829         dev->ctl_ainput = INPUT(index)->amux;
 830
 831         cx231xx_set_video_input_mux(dev, index);
 832
 833         cx25840_call(dev, video, s_routing, &route);
 834
 835         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 836
 837         cx231xx_info("video_mux : %d\n", index);
 838
 839         /* do mode control overrides if required */
 840         cx231xx_do_mode_ctrl_overrides(dev);
 841 }
 842
 843 /* Usage lock check functions */
 844 static int res_get(struct cx231xx_fh *fh)
 845 {
 846         struct cx231xx *dev = fh->dev;
 847         int rc = 0;
 848
 849         /* This instance already has stream_on */
 850         if (fh->stream_on)
 851                 return rc;
 852
 853         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 854                 if (dev->stream_on)
 855                         return -EBUSY;
 856                 dev->stream_on = 1;
 857         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 858                 if (dev->vbi_stream_on)
 859                         return -EBUSY;
 860                 dev->vbi_stream_on = 1;
 861         } else
 862                 return -EINVAL;
 863
 864         fh->stream_on = 1;
 865
 866         return rc;
 867 }
 868
 869 static int res_check(struct cx231xx_fh *fh)
 870 {
 871         return fh->stream_on;
 872 }
 873
 874 static void res_free(struct cx231xx_fh *fh)
 875 {
 876         struct cx231xx *dev = fh->dev;
 877
 878         fh->stream_on = 0;
 879
 880         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 881                 dev->stream_on = 0;
 882         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 883                 dev->vbi_stream_on = 0;
 884 }
 885
 886 static int check_dev(struct cx231xx *dev)
 887 {
 888         if (dev->state & DEV_DISCONNECTED) {
 889                 cx231xx_errdev("v4l2 ioctl: device not present\n");
 890                 return -ENODEV;
 891         }
 892
 893         if (dev->state & DEV_MISCONFIGURED) {
 894                 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
 895                                "close and open it again\n");
 896                 return -EIO;
 897         }
 898         return 0;
 899 }
 900
 901 void get_scale(struct cx231xx *dev,
 902                unsigned int width, unsigned int height,
 903                unsigned int *hscale, unsigned int *vscale)
 904 {
 905         unsigned int maxw = norm_maxw(dev);
 906         unsigned int maxh = norm_maxh(dev);
 907
 908         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 909         if (*hscale >= 0x4000)
 910                 *hscale = 0x3fff;
 911
 912         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 913         if (*vscale >= 0x4000)
 914                 *vscale = 0x3fff;
 915
 916         dev->hscale = *hscale;
 917         dev->vscale = *vscale;
 918
 919 }
 920
 921 /* ------------------------------------------------------------------
 922         IOCTL vidioc handling
 923    ------------------------------------------------------------------*/
 924
 925 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 926                                 struct v4l2_format *f)
 927 {
 928         struct cx231xx_fh *fh = priv;
 929         struct cx231xx *dev = fh->dev;
 930
 931         mutex_lock(&dev->lock);
 932
 933         f->fmt.pix.width = dev->width;
 934         f->fmt.pix.height = dev->height;
 935         f->fmt.pix.pixelformat = dev->format->fourcc;;
 936         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;;
 937         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 938         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 939
 940         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 941
 942         mutex_unlock(&dev->lock);
 943
 944         return 0;
 945 }
 946
 947 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 948 {
 949         unsigned int i;
 950
 951         for (i = 0; i < ARRAY_SIZE(format); i++)
 952                 if (format[i].fourcc == fourcc)
 953                         return &format[i];
 954
 955         return NULL;
 956 }
 957
 958 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 959                                   struct v4l2_format *f)
 960 {
 961         struct cx231xx_fh *fh = priv;
 962         struct cx231xx *dev = fh->dev;
 963         int width = f->fmt.pix.width;
 964         int height = f->fmt.pix.height;
 965         unsigned int maxw = norm_maxw(dev);
 966         unsigned int maxh = norm_maxh(dev);
 967         unsigned int hscale, vscale;
 968         struct cx231xx_fmt *fmt;
 969
 970         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 971         if (!fmt) {
 972                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 973                                  f->fmt.pix.pixelformat);
 974                 return -EINVAL;
 975         }
 976
 977         /* width must even because of the YUYV format
 978            height must be even because of interlacing */
 979         height &= 0xfffe;
 980         width &= 0xfffe;
 981
 982         if (unlikely(height < 32))
 983                 height = 32;
 984         if (unlikely(height > maxh))
 985                 height = maxh;
 986         if (unlikely(width < 48))
 987                 width = 48;
 988         if (unlikely(width > maxw))
 989                 width = maxw;
 990
 991         get_scale(dev, width, height, &hscale, &vscale);
 992
 993         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 994         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 995
 996         f->fmt.pix.width = width;
 997         f->fmt.pix.height = height;
 998         f->fmt.pix.pixelformat = fmt->fourcc;
 999         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1000         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1001         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1002         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1003
1004         return 0;
1005 }
1006
1007 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1008                                 struct v4l2_format *f)
1009 {
1010         struct cx231xx_fh *fh = priv;
1011         struct cx231xx *dev = fh->dev;
1012         int rc;
1013         struct cx231xx_fmt *fmt;
1014
1015         rc = check_dev(dev);
1016         if (rc < 0)
1017                 return rc;
1018
1019         mutex_lock(&dev->lock);
1020
1021         vidioc_try_fmt_vid_cap(file, priv, f);
1022
1023         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1024         if (!fmt) {
1025                 rc = -EINVAL;
1026                 goto out;
1027         }
1028
1029         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1030                 cx231xx_errdev("%s queue busy\n", __func__);
1031                 rc = -EBUSY;
1032                 goto out;
1033         }
1034
1035         if (dev->stream_on && !fh->stream_on) {
1036                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1037                 rc = -EBUSY;
1038                 goto out;
1039         }
1040
1041         /* set new image size */
1042         dev->width = f->fmt.pix.width;
1043         dev->height = f->fmt.pix.height;
1044         dev->format = fmt;
1045         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1046
1047         call_all(dev, video, s_fmt, f);
1048
1049         /* Set the correct alternate setting for this resolution */
1050         cx231xx_resolution_set(dev);
1051
1052 out:
1053         mutex_unlock(&dev->lock);
1054         return rc;
1055 }
1056
1057 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1058 {
1059         struct cx231xx_fh *fh = priv;
1060         struct cx231xx *dev = fh->dev;
1061
1062         *id = dev->norm;
1063         return 0;
1064 }
1065
1066 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1067 {
1068         struct cx231xx_fh *fh = priv;
1069         struct cx231xx *dev = fh->dev;
1070         struct v4l2_format f;
1071         int rc;
1072
1073         rc = check_dev(dev);
1074         if (rc < 0)
1075                 return rc;
1076
1077         cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1078
1079         mutex_lock(&dev->lock);
1080         dev->norm = *norm;
1081
1082         /* Adjusts width/height, if needed */
1083         f.fmt.pix.width = dev->width;
1084         f.fmt.pix.height = dev->height;
1085         vidioc_try_fmt_vid_cap(file, priv, &f);
1086
1087         /* set new image size */
1088         dev->width = f.fmt.pix.width;
1089         dev->height = f.fmt.pix.height;
1090         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1091
1092         call_all(dev, tuner, s_std, dev->norm);
1093
1094         mutex_unlock(&dev->lock);
1095
1096         cx231xx_resolution_set(dev);
1097
1098         /* do mode control overrides */
1099         cx231xx_do_mode_ctrl_overrides(dev);
1100
1101         return 0;
1102 }
1103
1104 static const char *iname[] = {
1105         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1106         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1107         [CX231XX_VMUX_TELEVISION] = "Television",
1108         [CX231XX_VMUX_CABLE]      = "Cable TV",
1109         [CX231XX_VMUX_DVB]        = "DVB",
1110         [CX231XX_VMUX_DEBUG]      = "for debug only",
1111 };
1112
1113 static int vidioc_enum_input(struct file *file, void *priv,
1114                              struct v4l2_input *i)
1115 {
1116         struct cx231xx_fh *fh = priv;
1117         struct cx231xx *dev = fh->dev;
1118         unsigned int n;
1119
1120         n = i->index;
1121         if (n >= MAX_CX231XX_INPUT)
1122                 return -EINVAL;
1123         if (0 == INPUT(n)->type)
1124                 return -EINVAL;
1125
1126         i->index = n;
1127         i->type = V4L2_INPUT_TYPE_CAMERA;
1128
1129         strcpy(i->name, iname[INPUT(n)->type]);
1130
1131         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1132             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1133                 i->type = V4L2_INPUT_TYPE_TUNER;
1134
1135         i->std = dev->vdev->tvnorms;
1136
1137         return 0;
1138 }
1139
1140 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1141 {
1142         struct cx231xx_fh *fh = priv;
1143         struct cx231xx *dev = fh->dev;
1144
1145         *i = dev->video_input;
1146
1147         return 0;
1148 }
1149
1150 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1151 {
1152         struct cx231xx_fh *fh = priv;
1153         struct cx231xx *dev = fh->dev;
1154         int rc;
1155
1156         rc = check_dev(dev);
1157         if (rc < 0)
1158                 return rc;
1159
1160         if (i >= MAX_CX231XX_INPUT)
1161                 return -EINVAL;
1162         if (0 == INPUT(i)->type)
1163                 return -EINVAL;
1164
1165         mutex_lock(&dev->lock);
1166
1167         video_mux(dev, i);
1168
1169         mutex_unlock(&dev->lock);
1170         return 0;
1171 }
1172
1173 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1174 {
1175         struct cx231xx_fh *fh = priv;
1176         struct cx231xx *dev = fh->dev;
1177
1178         switch (a->index) {
1179         case CX231XX_AMUX_VIDEO:
1180                 strcpy(a->name, "Television");
1181                 break;
1182         case CX231XX_AMUX_LINE_IN:
1183                 strcpy(a->name, "Line In");
1184                 break;
1185         default:
1186                 return -EINVAL;
1187         }
1188
1189         a->index = dev->ctl_ainput;
1190         a->capability = V4L2_AUDCAP_STEREO;
1191
1192         return 0;
1193 }
1194
1195 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1196 {
1197         struct cx231xx_fh *fh = priv;
1198         struct cx231xx *dev = fh->dev;
1199         int status = 0;
1200
1201         /* Doesn't allow manual routing */
1202         if (a->index != dev->ctl_ainput)
1203                 return -EINVAL;
1204
1205         dev->ctl_ainput = INPUT(a->index)->amux;
1206         status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1207
1208         return status;
1209 }
1210
1211 static int vidioc_queryctrl(struct file *file, void *priv,
1212                             struct v4l2_queryctrl *qc)
1213 {
1214         struct cx231xx_fh *fh = priv;
1215         struct cx231xx *dev = fh->dev;
1216         int id = qc->id;
1217         int i;
1218         int rc;
1219
1220         rc = check_dev(dev);
1221         if (rc < 0)
1222                 return rc;
1223
1224         qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1225         if (unlikely(qc->id == 0))
1226                 return -EINVAL;
1227
1228         memset(qc, 0, sizeof(*qc));
1229
1230         qc->id = id;
1231
1232         if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1233                 return -EINVAL;
1234
1235         for (i = 0; i < CX231XX_CTLS; i++)
1236                 if (cx231xx_ctls[i].v.id == qc->id)
1237                         break;
1238
1239         if (i == CX231XX_CTLS) {
1240                 *qc = no_ctl;
1241                 return 0;
1242         }
1243         *qc = cx231xx_ctls[i].v;
1244
1245         mutex_lock(&dev->lock);
1246         call_all(dev, core, queryctrl, qc);
1247         mutex_unlock(&dev->lock);
1248
1249         if (qc->type)
1250                 return 0;
1251         else
1252                 return -EINVAL;
1253 }
1254
1255 static int vidioc_g_ctrl(struct file *file, void *priv,
1256                          struct v4l2_control *ctrl)
1257 {
1258         struct cx231xx_fh *fh = priv;
1259         struct cx231xx *dev = fh->dev;
1260         int rc;
1261
1262         rc = check_dev(dev);
1263         if (rc < 0)
1264                 return rc;
1265
1266         mutex_lock(&dev->lock);
1267         call_all(dev, core, g_ctrl, ctrl);
1268         mutex_unlock(&dev->lock);
1269         return rc;
1270 }
1271
1272 static int vidioc_s_ctrl(struct file *file, void *priv,
1273                          struct v4l2_control *ctrl)
1274 {
1275         struct cx231xx_fh *fh = priv;
1276         struct cx231xx *dev = fh->dev;
1277         int rc;
1278
1279         rc = check_dev(dev);
1280         if (rc < 0)
1281                 return rc;
1282
1283         mutex_lock(&dev->lock);
1284         call_all(dev, core, s_ctrl, ctrl);
1285         mutex_unlock(&dev->lock);
1286         return rc;
1287 }
1288
1289 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1290 {
1291         struct cx231xx_fh *fh = priv;
1292         struct cx231xx *dev = fh->dev;
1293         int rc;
1294
1295         rc = check_dev(dev);
1296         if (rc < 0)
1297                 return rc;
1298
1299         if (0 != t->index)
1300                 return -EINVAL;
1301
1302         strcpy(t->name, "Tuner");
1303
1304         t->type = V4L2_TUNER_ANALOG_TV;
1305         t->capability = V4L2_TUNER_CAP_NORM;
1306         t->rangehigh = 0xffffffffUL;
1307         t->signal = 0xffff;     /* LOCKED */
1308
1309         return 0;
1310 }
1311
1312 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1313 {
1314         struct cx231xx_fh *fh = priv;
1315         struct cx231xx *dev = fh->dev;
1316         int rc;
1317
1318         rc = check_dev(dev);
1319         if (rc < 0)
1320                 return rc;
1321
1322         if (0 != t->index)
1323                 return -EINVAL;
1324 #if 0
1325         mutex_lock(&dev->lock);
1326         call_all(dev, tuner, s_tuner, t);
1327         mutex_unlock(&dev->lock);
1328 #endif
1329         return 0;
1330 }
1331
1332 static int vidioc_g_frequency(struct file *file, void *priv,
1333                               struct v4l2_frequency *f)
1334 {
1335         struct cx231xx_fh *fh = priv;
1336         struct cx231xx *dev = fh->dev;
1337
1338         mutex_lock(&dev->lock);
1339         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1340         f->frequency = dev->ctl_freq;
1341
1342         call_all(dev, tuner, g_frequency, f);
1343
1344         mutex_unlock(&dev->lock);
1345
1346         return 0;
1347 }
1348
1349 static int vidioc_s_frequency(struct file *file, void *priv,
1350                               struct v4l2_frequency *f)
1351 {
1352         struct cx231xx_fh *fh = priv;
1353         struct cx231xx *dev = fh->dev;
1354         int rc;
1355
1356         rc = check_dev(dev);
1357         if (rc < 0)
1358                 return rc;
1359
1360         if (0 != f->tuner)
1361                 return -EINVAL;
1362
1363         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1364                 return -EINVAL;
1365         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1366                 return -EINVAL;
1367
1368         /* set pre channel change settings in DIF first */
1369         rc = cx231xx_tuner_pre_channel_change(dev);
1370
1371         mutex_lock(&dev->lock);
1372
1373         dev->ctl_freq = f->frequency;
1374
1375         if (dev->tuner_type == TUNER_XC5000) {
1376                 if (dev->cx231xx_set_analog_freq != NULL)
1377                         dev->cx231xx_set_analog_freq(dev, f->frequency);
1378         } else
1379                 call_all(dev, tuner, s_frequency, f);
1380
1381         mutex_unlock(&dev->lock);
1382
1383         /* set post channel change settings in DIF first */
1384         rc = cx231xx_tuner_post_channel_change(dev);
1385
1386         cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1387
1388         return rc;
1389 }
1390
1391 #ifdef CONFIG_VIDEO_ADV_DEBUG
1392
1393 /*
1394   -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1395                                 chip=<chip>[,min=<addr>,max=<addr>]
1396                      dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1397   -r, --set-register=type=<host/i2cdrv/i2caddr>,
1398                                 chip=<chip>,reg=<addr>,val=<val>
1399                      set the register [VIDIOC_DBG_S_REGISTER]
1400
1401   if type == host, then <chip> is the hosts chip ID (default 0)
1402   if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1403   if type == i2caddr, then <chip> is the 7-bit I2C address
1404 */
1405
1406 static int vidioc_g_register(struct file *file, void *priv,
1407                              struct v4l2_dbg_register *reg)
1408 {
1409         struct cx231xx_fh *fh = priv;
1410         struct cx231xx *dev = fh->dev;
1411         int ret = 0;
1412         u8 value[4] = { 0, 0, 0, 0 };
1413         u32 data = 0;
1414
1415         switch (reg->match.type) {
1416         case V4L2_CHIP_MATCH_HOST:
1417                 switch (reg->match.addr) {
1418                 case 0: /* Cx231xx - internal registers */
1419                         ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1420                                                   (u16)reg->reg, value, 4);
1421                         reg->val = value[0] | value[1] << 8 |
1422                                    value[2] << 16 | value[3] << 24;
1423                         break;
1424                 case 1: /* AFE - read byte */
1425                         ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1426                                                   (u16)reg->reg, 2, &data, 1);
1427                         reg->val = le32_to_cpu(data & 0xff);
1428                         break;
1429                 case 14: /* AFE - read dword */
1430                         ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1431                                                   (u16)reg->reg, 2, &data, 4);
1432                         reg->val = le32_to_cpu(data);
1433                         break;
1434                 case 2: /* Video Block - read byte */
1435                         ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1436                                                   (u16)reg->reg, 2, &data, 1);
1437                         reg->val = le32_to_cpu(data & 0xff);
1438                         break;
1439                 case 24: /* Video Block - read dword */
1440                         ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1441                                                   (u16)reg->reg, 2, &data, 4);
1442                         reg->val = le32_to_cpu(data);
1443                         break;
1444                 case 3: /* I2S block - read byte */
1445                         ret = cx231xx_read_i2c_data(dev,
1446                                                     I2S_BLK_DEVICE_ADDRESS,
1447                                                     (u16)reg->reg, 1,
1448                                                     &data, 1);
1449                         reg->val = le32_to_cpu(data & 0xff);
1450                         break;
1451                 case 34: /* I2S Block - read dword */
1452                         ret =
1453                             cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1454                                                   (u16)reg->reg, 1, &data, 4);
1455                         reg->val = le32_to_cpu(data);
1456                         break;
1457                 }
1458                 return ret < 0 ? ret : 0;
1459
1460         case V4L2_CHIP_MATCH_I2C_DRIVER:
1461                 call_all(dev, core, g_register, reg);
1462                 return 0;
1463         case V4L2_CHIP_MATCH_I2C_ADDR:
1464                 /* Not supported yet */
1465                 return -EINVAL;
1466         default:
1467                 if (!v4l2_chip_match_host(&reg->match))
1468                         return -EINVAL;
1469         }
1470
1471         mutex_lock(&dev->lock);
1472         call_all(dev, core, g_register, reg);
1473         mutex_unlock(&dev->lock);
1474
1475         return ret;
1476 }
1477
1478 static int vidioc_s_register(struct file *file, void *priv,
1479                              struct v4l2_dbg_register *reg)
1480 {
1481         struct cx231xx_fh *fh = priv;
1482         struct cx231xx *dev = fh->dev;
1483         int ret = 0;
1484         __le64 buf;
1485         u32 value;
1486         u8 data[4] = { 0, 0, 0, 0 };
1487
1488         buf = cpu_to_le64(reg->val);
1489
1490         switch (reg->match.type) {
1491         case V4L2_CHIP_MATCH_HOST:
1492                 {
1493                         value = (u32) buf & 0xffffffff;
1494
1495                         switch (reg->match.addr) {
1496                         case 0: /* cx231xx internal registers */
1497                                 data[0] = (u8) value;
1498                                 data[1] = (u8) (value >> 8);
1499                                 data[2] = (u8) (value >> 16);
1500                                 data[3] = (u8) (value >> 24);
1501                                 ret = cx231xx_write_ctrl_reg(dev,
1502                                                            VRT_SET_REGISTER,
1503                                                            (u16)reg->reg, data,
1504                                                            4);
1505                                 break;
1506                         case 1: /* AFE - read byte */
1507                                 ret = cx231xx_write_i2c_data(dev,
1508                                                         AFE_DEVICE_ADDRESS,
1509                                                         (u16)reg->reg, 2,
1510                                                         value, 1);
1511                                 break;
1512                         case 14: /* AFE - read dword */
1513                                 ret = cx231xx_write_i2c_data(dev,
1514                                                         AFE_DEVICE_ADDRESS,
1515                                                         (u16)reg->reg, 2,
1516                                                         value, 4);
1517                                 break;
1518                         case 2: /* Video Block - read byte */
1519                                 ret =
1520                                     cx231xx_write_i2c_data(dev,
1521                                                         VID_BLK_I2C_ADDRESS,
1522                                                         (u16)reg->reg, 2,
1523                                                         value, 1);
1524                                 break;
1525                         case 24: /* Video Block - read dword */
1526                                 ret =
1527                                     cx231xx_write_i2c_data(dev,
1528                                                         VID_BLK_I2C_ADDRESS,
1529                                                         (u16)reg->reg, 2,
1530                                                         value, 4);
1531                                 break;
1532                         case 3: /* I2S block - read byte */
1533                                 ret =
1534                                     cx231xx_write_i2c_data(dev,
1535                                                         I2S_BLK_DEVICE_ADDRESS,
1536                                                         (u16)reg->reg, 1,
1537                                                         value, 1);
1538                                 break;
1539                         case 34: /* I2S block - read dword */
1540                                 ret =
1541                                     cx231xx_write_i2c_data(dev,
1542                                                         I2S_BLK_DEVICE_ADDRESS,
1543                                                         (u16)reg->reg, 1,
1544                                                         value, 4);
1545                                 break;
1546                         }
1547                 }
1548                 return ret < 0 ? ret : 0;
1549
1550         default:
1551                 break;
1552         }
1553
1554         mutex_lock(&dev->lock);
1555         call_all(dev, core, s_register, reg);
1556         mutex_unlock(&dev->lock);
1557
1558         return ret;
1559 }
1560 #endif
1561
1562 static int vidioc_cropcap(struct file *file, void *priv,
1563                           struct v4l2_cropcap *cc)
1564 {
1565         struct cx231xx_fh *fh = priv;
1566         struct cx231xx *dev = fh->dev;
1567
1568         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1569                 return -EINVAL;
1570
1571         cc->bounds.left = 0;
1572         cc->bounds.top = 0;
1573         cc->bounds.width = dev->width;
1574         cc->bounds.height = dev->height;
1575         cc->defrect = cc->bounds;
1576         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1577         cc->pixelaspect.denominator = 59;
1578
1579         return 0;
1580 }
1581
1582 static int vidioc_streamon(struct file *file, void *priv,
1583                            enum v4l2_buf_type type)
1584 {
1585         struct cx231xx_fh *fh = priv;
1586         struct cx231xx *dev = fh->dev;
1587         int rc;
1588
1589         rc = check_dev(dev);
1590         if (rc < 0)
1591                 return rc;
1592
1593         mutex_lock(&dev->lock);
1594         rc = res_get(fh);
1595
1596         if (likely(rc >= 0))
1597                 rc = videobuf_streamon(&fh->vb_vidq);
1598
1599         call_all(dev, video, s_stream, 1);
1600
1601         mutex_unlock(&dev->lock);
1602
1603         return rc;
1604 }
1605
1606 static int vidioc_streamoff(struct file *file, void *priv,
1607                             enum v4l2_buf_type type)
1608 {
1609         struct cx231xx_fh *fh = priv;
1610         struct cx231xx *dev = fh->dev;
1611         int rc;
1612
1613         rc = check_dev(dev);
1614         if (rc < 0)
1615                 return rc;
1616
1617         if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1618             (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1619                 return -EINVAL;
1620         if (type != fh->type)
1621                 return -EINVAL;
1622
1623         mutex_lock(&dev->lock);
1624
1625         cx25840_call(dev, video, s_stream, 0);
1626
1627         videobuf_streamoff(&fh->vb_vidq);
1628         res_free(fh);
1629
1630         mutex_unlock(&dev->lock);
1631
1632         return 0;
1633 }
1634
1635 static int vidioc_querycap(struct file *file, void *priv,
1636                            struct v4l2_capability *cap)
1637 {
1638         struct cx231xx_fh *fh = priv;
1639         struct cx231xx *dev = fh->dev;
1640
1641         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1642         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1643         strlcpy(cap->bus_info, dev->v4l2_dev.name,
1644                 sizeof(cap->bus_info));
1645
1646         cap->version = CX231XX_VERSION_CODE;
1647
1648         cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1649 #if 0
1650                 V4L2_CAP_SLICED_VBI_CAPTURE |
1651 #endif
1652                 V4L2_CAP_VIDEO_CAPTURE  |
1653                 V4L2_CAP_AUDIO          |
1654                 V4L2_CAP_READWRITE      |
1655                 V4L2_CAP_STREAMING;
1656
1657         if (dev->tuner_type != TUNER_ABSENT)
1658                 cap->capabilities |= V4L2_CAP_TUNER;
1659
1660         return 0;
1661 }
1662
1663 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1664                                    struct v4l2_fmtdesc *f)
1665 {
1666         if (unlikely(f->index >= ARRAY_SIZE(format)))
1667                 return -EINVAL;
1668
1669         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1670         f->pixelformat = format[f->index].fourcc;
1671
1672         return 0;
1673 }
1674
1675 /* Sliced VBI ioctls */
1676 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1677                                        struct v4l2_format *f)
1678 {
1679         struct cx231xx_fh *fh = priv;
1680         struct cx231xx *dev = fh->dev;
1681         int rc;
1682
1683         rc = check_dev(dev);
1684         if (rc < 0)
1685                 return rc;
1686
1687         mutex_lock(&dev->lock);
1688
1689         f->fmt.sliced.service_set = 0;
1690
1691         call_all(dev, video, g_fmt, f);
1692
1693         if (f->fmt.sliced.service_set == 0)
1694                 rc = -EINVAL;
1695
1696         mutex_unlock(&dev->lock);
1697         return rc;
1698 }
1699
1700 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1701                                          struct v4l2_format *f)
1702 {
1703         struct cx231xx_fh *fh = priv;
1704         struct cx231xx *dev = fh->dev;
1705         int rc;
1706
1707         rc = check_dev(dev);
1708         if (rc < 0)
1709                 return rc;
1710
1711         mutex_lock(&dev->lock);
1712         call_all(dev, video, g_fmt, f);
1713         mutex_unlock(&dev->lock);
1714
1715         if (f->fmt.sliced.service_set == 0)
1716                 return -EINVAL;
1717
1718         return 0;
1719 }
1720
1721 /* RAW VBI ioctls */
1722
1723 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1724                                 struct v4l2_format *f)
1725 {
1726         struct cx231xx_fh *fh = priv;
1727         struct cx231xx *dev = fh->dev;
1728
1729         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1730             35468950 : 28636363;
1731         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1732         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1733         f->fmt.vbi.offset = 64 * 4;
1734         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1735             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1736         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1737             PAL_VBI_LINES : NTSC_VBI_LINES;
1738         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1739             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1740         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1741
1742         return 0;
1743
1744 }
1745
1746 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1747                                   struct v4l2_format *f)
1748 {
1749         struct cx231xx_fh *fh = priv;
1750         struct cx231xx *dev = fh->dev;
1751
1752         if (dev->vbi_stream_on && !fh->stream_on) {
1753                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1754                 return -EBUSY;
1755         }
1756
1757         f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1758         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1759             35468950 : 28636363;
1760         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1761         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1762         f->fmt.vbi.offset = 244;
1763         f->fmt.vbi.flags = 0;
1764         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1765             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1766         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1767             PAL_VBI_LINES : NTSC_VBI_LINES;
1768         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1769             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1770         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1771
1772         return 0;
1773
1774 }
1775
1776 static int vidioc_reqbufs(struct file *file, void *priv,
1777                           struct v4l2_requestbuffers *rb)
1778 {
1779         struct cx231xx_fh *fh = priv;
1780         struct cx231xx *dev = fh->dev;
1781         int rc;
1782
1783         rc = check_dev(dev);
1784         if (rc < 0)
1785                 return rc;
1786
1787         return videobuf_reqbufs(&fh->vb_vidq, rb);
1788 }
1789
1790 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1791 {
1792         struct cx231xx_fh *fh = priv;
1793         struct cx231xx *dev = fh->dev;
1794         int rc;
1795
1796         rc = check_dev(dev);
1797         if (rc < 0)
1798                 return rc;
1799
1800         return videobuf_querybuf(&fh->vb_vidq, b);
1801 }
1802
1803 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1804 {
1805         struct cx231xx_fh *fh = priv;
1806         struct cx231xx *dev = fh->dev;
1807         int rc;
1808
1809         rc = check_dev(dev);
1810         if (rc < 0)
1811                 return rc;
1812
1813         return videobuf_qbuf(&fh->vb_vidq, b);
1814 }
1815
1816 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1817 {
1818         struct cx231xx_fh *fh = priv;
1819         struct cx231xx *dev = fh->dev;
1820         int rc;
1821
1822         rc = check_dev(dev);
1823         if (rc < 0)
1824                 return rc;
1825
1826         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1827 }
1828
1829 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1830 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1831 {
1832         struct cx231xx_fh *fh = priv;
1833
1834         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1835 }
1836 #endif
1837
1838 /* ----------------------------------------------------------- */
1839 /* RADIO ESPECIFIC IOCTLS                                      */
1840 /* ----------------------------------------------------------- */
1841
1842 static int radio_querycap(struct file *file, void *priv,
1843                           struct v4l2_capability *cap)
1844 {
1845         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1846
1847         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1848         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1849         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1850
1851         cap->version = CX231XX_VERSION_CODE;
1852         cap->capabilities = V4L2_CAP_TUNER;
1853         return 0;
1854 }
1855
1856 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1857 {
1858         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1859
1860         if (unlikely(t->index > 0))
1861                 return -EINVAL;
1862
1863         strcpy(t->name, "Radio");
1864         t->type = V4L2_TUNER_RADIO;
1865
1866         mutex_lock(&dev->lock);
1867         call_all(dev, tuner, s_tuner, t);
1868         mutex_unlock(&dev->lock);
1869
1870         return 0;
1871 }
1872
1873 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1874 {
1875         if (i->index != 0)
1876                 return -EINVAL;
1877         strcpy(i->name, "Radio");
1878         i->type = V4L2_INPUT_TYPE_TUNER;
1879
1880         return 0;
1881 }
1882
1883 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1884 {
1885         if (unlikely(a->index))
1886                 return -EINVAL;
1887
1888         strcpy(a->name, "Radio");
1889         return 0;
1890 }
1891
1892 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1893 {
1894         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1895
1896         if (0 != t->index)
1897                 return -EINVAL;
1898
1899         mutex_lock(&dev->lock);
1900         call_all(dev, tuner, s_tuner, t);
1901         mutex_unlock(&dev->lock);
1902
1903         return 0;
1904 }
1905
1906 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1907 {
1908         return 0;
1909 }
1910
1911 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1912 {
1913         return 0;
1914 }
1915
1916 static int radio_queryctrl(struct file *file, void *priv,
1917                            struct v4l2_queryctrl *c)
1918 {
1919         int i;
1920
1921         if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1922                 return -EINVAL;
1923         if (c->id == V4L2_CID_AUDIO_MUTE) {
1924                 for (i = 0; i < CX231XX_CTLS; i++)
1925                         if (cx231xx_ctls[i].v.id == c->id)
1926                                 break;
1927                 *c = cx231xx_ctls[i].v;
1928         } else
1929                 *c = no_ctl;
1930         return 0;
1931 }
1932
1933 /*
1934  * cx231xx_v4l2_open()
1935  * inits the device and starts isoc transfer
1936  */
1937 static int cx231xx_v4l2_open(struct file *filp)
1938 {
1939         int minor = video_devdata(filp)->minor;
1940         int errCode = 0, radio = 0;
1941         struct cx231xx *dev = NULL;
1942         struct cx231xx_fh *fh;
1943         enum v4l2_buf_type fh_type = 0;
1944
1945         dev = cx231xx_get_device(minor, &fh_type, &radio);
1946         if (NULL == dev)
1947                 return -ENODEV;
1948
1949         mutex_lock(&dev->lock);
1950
1951         cx231xx_videodbg("open minor=%d type=%s users=%d\n",
1952                          minor, v4l2_type_names[fh_type], dev->users);
1953
1954 #if 0
1955         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1956         if (errCode < 0) {
1957                 cx231xx_errdev
1958                     ("Device locked on digital mode. Can't open analog\n");
1959                 mutex_unlock(&dev->lock);
1960                 return -EBUSY;
1961         }
1962 #endif
1963
1964         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1965         if (!fh) {
1966                 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1967                 mutex_unlock(&dev->lock);
1968                 return -ENOMEM;
1969         }
1970         fh->dev = dev;
1971         fh->radio = radio;
1972         fh->type = fh_type;
1973         filp->private_data = fh;
1974
1975         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1976                 dev->width = norm_maxw(dev);
1977                 dev->height = norm_maxh(dev);
1978                 dev->hscale = 0;
1979                 dev->vscale = 0;
1980
1981                 /* Power up in Analog TV mode */
1982                 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1983
1984 #if 0
1985                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1986 #endif
1987                 cx231xx_resolution_set(dev);
1988
1989                 /* set video alternate setting */
1990                 cx231xx_set_video_alternate(dev);
1991
1992                 /* Needed, since GPIO might have disabled power of
1993                    some i2c device */
1994                 cx231xx_config_i2c(dev);
1995
1996                 /* device needs to be initialized before isoc transfer */
1997                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1998                 video_mux(dev, dev->video_input);
1999
2000         }
2001         if (fh->radio) {
2002                 cx231xx_videodbg("video_open: setting radio device\n");
2003
2004                 /* cx231xx_start_radio(dev); */
2005
2006                 call_all(dev, tuner, s_radio);
2007         }
2008
2009         dev->users++;
2010
2011         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2012                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2013                                             NULL, &dev->video_mode.slock,
2014                                             fh->type, V4L2_FIELD_INTERLACED,
2015                                             sizeof(struct cx231xx_buffer), fh);
2016         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2017                 /* Set the required alternate setting  VBI interface works in
2018                    Bulk mode only */
2019                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2020
2021                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2022                                             NULL, &dev->vbi_mode.slock,
2023                                             fh->type, V4L2_FIELD_SEQ_TB,
2024                                             sizeof(struct cx231xx_buffer), fh);
2025         }
2026
2027         mutex_unlock(&dev->lock);
2028
2029         return errCode;
2030 }
2031
2032 /*
2033  * cx231xx_realease_resources()
2034  * unregisters the v4l2,i2c and usb devices
2035  * called when the device gets disconected or at module unload
2036 */
2037 void cx231xx_release_analog_resources(struct cx231xx *dev)
2038 {
2039
2040         /*FIXME: I2C IR should be disconnected */
2041
2042         if (dev->radio_dev) {
2043                 if (-1 != dev->radio_dev->minor)
2044                         video_unregister_device(dev->radio_dev);
2045                 else
2046                         video_device_release(dev->radio_dev);
2047                 dev->radio_dev = NULL;
2048         }
2049         if (dev->vbi_dev) {
2050                 cx231xx_info("V4L2 device /dev/vbi%d deregistered\n",
2051                              dev->vbi_dev->num);
2052                 if (-1 != dev->vbi_dev->minor)
2053                         video_unregister_device(dev->vbi_dev);
2054                 else
2055                         video_device_release(dev->vbi_dev);
2056                 dev->vbi_dev = NULL;
2057         }
2058         if (dev->vdev) {
2059                 cx231xx_info("V4L2 device /dev/video%d deregistered\n",
2060                              dev->vdev->num);
2061                 if (-1 != dev->vdev->minor)
2062                         video_unregister_device(dev->vdev);
2063                 else
2064                         video_device_release(dev->vdev);
2065                 dev->vdev = NULL;
2066         }
2067 }
2068
2069 /*
2070  * cx231xx_v4l2_close()
2071  * stops streaming and deallocates all resources allocated by the v4l2
2072  * calls and ioctls
2073  */
2074 static int cx231xx_v4l2_close(struct file *filp)
2075 {
2076         struct cx231xx_fh *fh = filp->private_data;
2077         struct cx231xx *dev = fh->dev;
2078
2079         cx231xx_videodbg("users=%d\n", dev->users);
2080
2081         mutex_lock(&dev->lock);
2082
2083         if (res_check(fh))
2084                 res_free(fh);
2085
2086         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2087                 videobuf_stop(&fh->vb_vidq);
2088                 videobuf_mmap_free(&fh->vb_vidq);
2089
2090                 /* the device is already disconnect,
2091                    free the remaining resources */
2092                 if (dev->state & DEV_DISCONNECTED) {
2093                         cx231xx_release_resources(dev);
2094                         mutex_unlock(&dev->lock);
2095                         kfree(dev);
2096                         return 0;
2097                 }
2098
2099                 /* do this before setting alternate! */
2100                 cx231xx_uninit_vbi_isoc(dev);
2101
2102                 /* set alternate 0 */
2103                 if (!dev->vbi_or_sliced_cc_mode)
2104                         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2105                 else
2106                         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2107
2108                 kfree(fh);
2109                 dev->users--;
2110                 wake_up_interruptible_nr(&dev->open, 1);
2111                 mutex_unlock(&dev->lock);
2112                 return 0;
2113         }
2114
2115         if (dev->users == 1) {
2116                 videobuf_stop(&fh->vb_vidq);
2117                 videobuf_mmap_free(&fh->vb_vidq);
2118
2119                 /* the device is already disconnect,
2120                    free the remaining resources */
2121                 if (dev->state & DEV_DISCONNECTED) {
2122                         cx231xx_release_resources(dev);
2123                         mutex_unlock(&dev->lock);
2124                         kfree(dev);
2125                         return 0;
2126                 }
2127
2128                 /* Save some power by putting tuner to sleep */
2129                 call_all(dev, core, s_standby, 0);
2130
2131                 /* do this before setting alternate! */
2132                 cx231xx_uninit_isoc(dev);
2133                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2134
2135                 /* set alternate 0 */
2136                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2137         }
2138         kfree(fh);
2139         dev->users--;
2140         wake_up_interruptible_nr(&dev->open, 1);
2141         mutex_unlock(&dev->lock);
2142         return 0;
2143 }
2144
2145 /*
2146  * cx231xx_v4l2_read()
2147  * will allocate buffers when called for the first time
2148  */
2149 static ssize_t
2150 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2151                   loff_t *pos)
2152 {
2153         struct cx231xx_fh *fh = filp->private_data;
2154         struct cx231xx *dev = fh->dev;
2155         int rc;
2156
2157         rc = check_dev(dev);
2158         if (rc < 0)
2159                 return rc;
2160
2161         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2162             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2163                 mutex_lock(&dev->lock);
2164                 rc = res_get(fh);
2165                 mutex_unlock(&dev->lock);
2166
2167                 if (unlikely(rc < 0))
2168                         return rc;
2169
2170                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2171                                             filp->f_flags & O_NONBLOCK);
2172         }
2173         return 0;
2174 }
2175
2176 /*
2177  * cx231xx_v4l2_poll()
2178  * will allocate buffers when called for the first time
2179  */
2180 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2181 {
2182         struct cx231xx_fh *fh = filp->private_data;
2183         struct cx231xx *dev = fh->dev;
2184         int rc;
2185
2186         rc = check_dev(dev);
2187         if (rc < 0)
2188                 return rc;
2189
2190         mutex_lock(&dev->lock);
2191         rc = res_get(fh);
2192         mutex_unlock(&dev->lock);
2193
2194         if (unlikely(rc < 0))
2195                 return POLLERR;
2196
2197         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2198             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2199                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2200         else
2201                 return POLLERR;
2202 }
2203
2204 /*
2205  * cx231xx_v4l2_mmap()
2206  */
2207 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2208 {
2209         struct cx231xx_fh *fh = filp->private_data;
2210         struct cx231xx *dev = fh->dev;
2211         int rc;
2212
2213         rc = check_dev(dev);
2214         if (rc < 0)
2215                 return rc;
2216
2217         mutex_lock(&dev->lock);
2218         rc = res_get(fh);
2219         mutex_unlock(&dev->lock);
2220
2221         if (unlikely(rc < 0))
2222                 return rc;
2223
2224         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2225
2226         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2227                          (unsigned long)vma->vm_start,
2228                          (unsigned long)vma->vm_end -
2229                          (unsigned long)vma->vm_start, rc);
2230
2231         return rc;
2232 }
2233
2234 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2235         .owner   = THIS_MODULE,
2236         .open    = cx231xx_v4l2_open,
2237         .release = cx231xx_v4l2_close,
2238         .read    = cx231xx_v4l2_read,
2239         .poll    = cx231xx_v4l2_poll,
2240         .mmap    = cx231xx_v4l2_mmap,
2241         .ioctl   = video_ioctl2,
2242 };
2243
2244 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2245         .vidioc_querycap               = vidioc_querycap,
2246         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2247         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2248         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2249         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2250         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2251         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2252         .vidioc_s_fmt_vbi_cap          = vidioc_try_fmt_vbi_cap,
2253         .vidioc_g_audio                =  vidioc_g_audio,
2254         .vidioc_s_audio                = vidioc_s_audio,
2255         .vidioc_cropcap                = vidioc_cropcap,
2256         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2257         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2258         .vidioc_reqbufs                = vidioc_reqbufs,
2259         .vidioc_querybuf               = vidioc_querybuf,
2260         .vidioc_qbuf                   = vidioc_qbuf,
2261         .vidioc_dqbuf                  = vidioc_dqbuf,
2262         .vidioc_s_std                  = vidioc_s_std,
2263         .vidioc_g_std                  = vidioc_g_std,
2264         .vidioc_enum_input             = vidioc_enum_input,
2265         .vidioc_g_input                = vidioc_g_input,
2266         .vidioc_s_input                = vidioc_s_input,
2267         .vidioc_queryctrl              = vidioc_queryctrl,
2268         .vidioc_g_ctrl                 = vidioc_g_ctrl,
2269         .vidioc_s_ctrl                 = vidioc_s_ctrl,
2270         .vidioc_streamon               = vidioc_streamon,
2271         .vidioc_streamoff              = vidioc_streamoff,
2272         .vidioc_g_tuner                = vidioc_g_tuner,
2273         .vidioc_s_tuner                = vidioc_s_tuner,
2274         .vidioc_g_frequency            = vidioc_g_frequency,
2275         .vidioc_s_frequency            = vidioc_s_frequency,
2276 #ifdef CONFIG_VIDEO_ADV_DEBUG
2277         .vidioc_g_register             = vidioc_g_register,
2278         .vidioc_s_register             = vidioc_s_register,
2279 #endif
2280 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2281         .vidiocgmbuf                   = vidiocgmbuf,
2282 #endif
2283 };
2284
2285 static struct video_device cx231xx_vbi_template;
2286
2287 static const struct video_device cx231xx_video_template = {
2288         .fops         = &cx231xx_v4l_fops,
2289         .release      = video_device_release,
2290         .ioctl_ops    = &video_ioctl_ops,
2291         .minor        = -1,
2292         .tvnorms      = V4L2_STD_ALL,
2293         .current_norm = V4L2_STD_PAL,
2294 };
2295
2296 static const struct v4l2_file_operations radio_fops = {
2297         .owner   = THIS_MODULE,
2298         .open   = cx231xx_v4l2_open,
2299         .release = cx231xx_v4l2_close,
2300         .ioctl   = video_ioctl2,
2301 };
2302
2303 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2304         .vidioc_querycap    = radio_querycap,
2305         .vidioc_g_tuner     = radio_g_tuner,
2306         .vidioc_enum_input  = radio_enum_input,
2307         .vidioc_g_audio     = radio_g_audio,
2308         .vidioc_s_tuner     = radio_s_tuner,
2309         .vidioc_s_audio     = radio_s_audio,
2310         .vidioc_s_input     = radio_s_input,
2311         .vidioc_queryctrl   = radio_queryctrl,
2312         .vidioc_g_ctrl      = vidioc_g_ctrl,
2313         .vidioc_s_ctrl      = vidioc_s_ctrl,
2314         .vidioc_g_frequency = vidioc_g_frequency,
2315         .vidioc_s_frequency = vidioc_s_frequency,
2316 #ifdef CONFIG_VIDEO_ADV_DEBUG
2317         .vidioc_g_register  = vidioc_g_register,
2318         .vidioc_s_register  = vidioc_s_register,
2319 #endif
2320 };
2321
2322 static struct video_device cx231xx_radio_template = {
2323         .name      = "cx231xx-radio",
2324         .fops      = &radio_fops,
2325         .ioctl_ops = &radio_ioctl_ops,
2326         .minor     = -1,
2327 };
2328
2329 /******************************** usb interface ******************************/
2330
2331 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2332                 const struct video_device
2333                 *template, const char *type_name)
2334 {
2335         struct video_device *vfd;
2336
2337         vfd = video_device_alloc();
2338         if (NULL == vfd)
2339                 return NULL;
2340
2341         *vfd = *template;
2342         vfd->minor = -1;
2343         vfd->v4l2_dev = &dev->v4l2_dev;
2344         vfd->release = video_device_release;
2345         vfd->debug = video_debug;
2346
2347         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2348
2349         return vfd;
2350 }
2351
2352 int cx231xx_register_analog_devices(struct cx231xx *dev)
2353 {
2354         int ret;
2355
2356         cx231xx_info("%s()\n", __func__);
2357
2358         cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2359                      dev->name,
2360                      (CX231XX_VERSION_CODE >> 16) & 0xff,
2361                      (CX231XX_VERSION_CODE >> 8) & 0xff,
2362                      CX231XX_VERSION_CODE & 0xff);
2363
2364         /* set default norm */
2365         /*dev->norm = cx231xx_video_template.current_norm; */
2366         dev->width = norm_maxw(dev);
2367         dev->height = norm_maxh(dev);
2368         dev->interlaced = 0;
2369         dev->hscale = 0;
2370         dev->vscale = 0;
2371
2372         /* Analog specific initialization */
2373         dev->format = &format[0];
2374         /* video_mux(dev, dev->video_input); */
2375
2376         /* Audio defaults */
2377         dev->mute = 1;
2378         dev->volume = 0x1f;
2379
2380         /* enable vbi capturing */
2381         /* write code here...  */
2382
2383         /* allocate and fill video video_device struct */
2384         dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2385         if (!dev->vdev) {
2386                 cx231xx_errdev("cannot allocate video_device.\n");
2387                 return -ENODEV;
2388         }
2389
2390         /* register v4l2 video video_device */
2391         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2392                                     video_nr[dev->devno]);
2393         if (ret) {
2394                 cx231xx_errdev("unable to register video device (error=%i).\n",
2395                                ret);
2396                 return ret;
2397         }
2398
2399         cx231xx_info("%s/0: registered device video%d [v4l2]\n",
2400                      dev->name, dev->vdev->num);
2401
2402         /* Initialize VBI template */
2403         memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2404                sizeof(cx231xx_vbi_template));
2405         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2406
2407         /* Allocate and fill vbi video_device struct */
2408         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2409
2410         /* register v4l2 vbi video_device */
2411         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2412                                     vbi_nr[dev->devno]);
2413         if (ret < 0) {
2414                 cx231xx_errdev("unable to register vbi device\n");
2415                 return ret;
2416         }
2417
2418         cx231xx_info("%s/0: registered device vbi%d\n",
2419                      dev->name, dev->vbi_dev->num);
2420
2421         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2422                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2423                                                    "radio");
2424                 if (!dev->radio_dev) {
2425                         cx231xx_errdev("cannot allocate video_device.\n");
2426                         return -ENODEV;
2427                 }
2428                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2429                                             radio_nr[dev->devno]);
2430                 if (ret < 0) {
2431                         cx231xx_errdev("can't register radio device\n");
2432                         return ret;
2433                 }
2434                 cx231xx_info("Registered radio device as /dev/radio%d\n",
2435                              dev->radio_dev->num);
2436         }
2437
2438         cx231xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2439                      dev->vdev->num, dev->vbi_dev->num);
2440
2441         return 0;
2442 }