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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 #include <linux/slab.h>
  36
  37 #include <media/v4l2-common.h>
  38 #include <media/v4l2-ioctl.h>
  39 #include <media/v4l2-chip-ident.h>
  40 #include <media/msp3400.h>
  41 #include <media/tuner.h>
  42
  43 #include "dvb_frontend.h"
  44
  45 #include "cx231xx.h"
  46 #include "cx231xx-vbi.h"
  47
  48 #define CX231XX_VERSION_CODE            KERNEL_VERSION(0, 0, 1)
  49
  50 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  51 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  52
  53 #define cx231xx_videodbg(fmt, arg...) do {\
  54         if (video_debug) \
  55                 printk(KERN_INFO "%s %s :"fmt, \
  56                          dev->name, __func__ , ##arg); } while (0)
  57
  58 static unsigned int isoc_debug;
  59 module_param(isoc_debug, int, 0644);
  60 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  61
  62 #define cx231xx_isocdbg(fmt, arg...) \
  63 do {\
  64         if (isoc_debug) { \
  65                 printk(KERN_INFO "%s %s :"fmt, \
  66                          dev->name, __func__ , ##arg); \
  67         } \
  68   } while (0)
  69
  70 MODULE_AUTHOR(DRIVER_AUTHOR);
  71 MODULE_DESCRIPTION(DRIVER_DESC);
  72 MODULE_LICENSE("GPL");
  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 /* supported controls */
 104 /* Common to all boards */
 105
 106 /* ------------------------------------------------------------------- */
 107
 108 static const struct v4l2_queryctrl no_ctl = {
 109         .name = "42",
 110         .flags = V4L2_CTRL_FLAG_DISABLED,
 111 };
 112
 113 static struct cx231xx_ctrl cx231xx_ctls[] = {
 114         /* --- video --- */
 115         {
 116                 .v = {
 117                         .id = V4L2_CID_BRIGHTNESS,
 118                         .name = "Brightness",
 119                         .minimum = 0x00,
 120                         .maximum = 0xff,
 121                         .step = 1,
 122                         .default_value = 0x7f,
 123                         .type = V4L2_CTRL_TYPE_INTEGER,
 124                 },
 125                 .off = 128,
 126                 .reg = LUMA_CTRL,
 127                 .mask = 0x00ff,
 128                 .shift = 0,
 129         }, {
 130                 .v = {
 131                         .id = V4L2_CID_CONTRAST,
 132                         .name = "Contrast",
 133                         .minimum = 0,
 134                         .maximum = 0xff,
 135                         .step = 1,
 136                         .default_value = 0x3f,
 137                         .type = V4L2_CTRL_TYPE_INTEGER,
 138                 },
 139                 .off = 0,
 140                 .reg = LUMA_CTRL,
 141                 .mask = 0xff00,
 142                 .shift = 8,
 143         }, {
 144                 .v = {
 145                         .id = V4L2_CID_HUE,
 146                         .name = "Hue",
 147                         .minimum = 0,
 148                         .maximum = 0xff,
 149                         .step = 1,
 150                         .default_value = 0x7f,
 151                         .type = V4L2_CTRL_TYPE_INTEGER,
 152                 },
 153                 .off = 128,
 154                 .reg = CHROMA_CTRL,
 155                 .mask = 0xff0000,
 156                 .shift = 16,
 157         }, {
 158         /* strictly, this only describes only U saturation.
 159         * V saturation is handled specially through code.
 160         */
 161                 .v = {
 162                         .id = V4L2_CID_SATURATION,
 163                         .name = "Saturation",
 164                         .minimum = 0,
 165                         .maximum = 0xff,
 166                         .step = 1,
 167                         .default_value = 0x7f,
 168                         .type = V4L2_CTRL_TYPE_INTEGER,
 169                 },
 170                 .off = 0,
 171                 .reg = CHROMA_CTRL,
 172                 .mask = 0x00ff,
 173                 .shift = 0,
 174         }, {
 175                 /* --- audio --- */
 176                 .v = {
 177                         .id = V4L2_CID_AUDIO_MUTE,
 178                         .name = "Mute",
 179                         .minimum = 0,
 180                         .maximum = 1,
 181                         .default_value = 1,
 182                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 183                 },
 184                 .reg = PATH1_CTL1,
 185                 .mask = (0x1f << 24),
 186                 .shift = 24,
 187         }, {
 188                 .v = {
 189                         .id = V4L2_CID_AUDIO_VOLUME,
 190                         .name = "Volume",
 191                         .minimum = 0,
 192                         .maximum = 0x3f,
 193                         .step = 1,
 194                         .default_value = 0x3f,
 195                         .type = V4L2_CTRL_TYPE_INTEGER,
 196                 },
 197                 .reg = PATH1_VOL_CTL,
 198                 .mask = 0xff,
 199                 .shift = 0,
 200         }
 201 };
 202 static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls);
 203
 204 static const u32 cx231xx_user_ctrls[] = {
 205         V4L2_CID_USER_CLASS,
 206         V4L2_CID_BRIGHTNESS,
 207         V4L2_CID_CONTRAST,
 208         V4L2_CID_SATURATION,
 209         V4L2_CID_HUE,
 210         V4L2_CID_AUDIO_VOLUME,
 211 #if 0
 212         V4L2_CID_AUDIO_BALANCE,
 213 #endif
 214         V4L2_CID_AUDIO_MUTE,
 215         0
 216 };
 217
 218 static const u32 *ctrl_classes[] = {
 219         cx231xx_user_ctrls,
 220         NULL
 221 };
 222
 223 /* ------------------------------------------------------------------
 224         Video buffer and parser functions
 225    ------------------------------------------------------------------*/
 226
 227 /*
 228  * Announces that a buffer were filled and request the next
 229  */
 230 static inline void buffer_filled(struct cx231xx *dev,
 231                                  struct cx231xx_dmaqueue *dma_q,
 232                                  struct cx231xx_buffer *buf)
 233 {
 234         /* Advice that buffer was filled */
 235         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 236         buf->vb.state = VIDEOBUF_DONE;
 237         buf->vb.field_count++;
 238         do_gettimeofday(&buf->vb.ts);
 239
 240         dev->video_mode.isoc_ctl.buf = NULL;
 241
 242         list_del(&buf->vb.queue);
 243         wake_up(&buf->vb.done);
 244 }
 245
 246 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 247 {
 248         char *errmsg = "Unknown";
 249
 250         switch (status) {
 251         case -ENOENT:
 252                 errmsg = "unlinked synchronuously";
 253                 break;
 254         case -ECONNRESET:
 255                 errmsg = "unlinked asynchronuously";
 256                 break;
 257         case -ENOSR:
 258                 errmsg = "Buffer error (overrun)";
 259                 break;
 260         case -EPIPE:
 261                 errmsg = "Stalled (device not responding)";
 262                 break;
 263         case -EOVERFLOW:
 264                 errmsg = "Babble (bad cable?)";
 265                 break;
 266         case -EPROTO:
 267                 errmsg = "Bit-stuff error (bad cable?)";
 268                 break;
 269         case -EILSEQ:
 270                 errmsg = "CRC/Timeout (could be anything)";
 271                 break;
 272         case -ETIME:
 273                 errmsg = "Device does not respond";
 274                 break;
 275         }
 276         if (packet < 0) {
 277                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 278         } else {
 279                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 280                                 packet, status, errmsg);
 281         }
 282 }
 283
 284 /*
 285  * video-buf generic routine to get the next available buffer
 286  */
 287 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 288                                 struct cx231xx_buffer **buf)
 289 {
 290         struct cx231xx_video_mode *vmode =
 291             container_of(dma_q, struct cx231xx_video_mode, vidq);
 292         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 293
 294         char *outp;
 295
 296         if (list_empty(&dma_q->active)) {
 297                 cx231xx_isocdbg("No active queue to serve\n");
 298                 dev->video_mode.isoc_ctl.buf = NULL;
 299                 *buf = NULL;
 300                 return;
 301         }
 302
 303         /* Get the next buffer */
 304         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 305
 306         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 307         outp = videobuf_to_vmalloc(&(*buf)->vb);
 308         memset(outp, 0, (*buf)->vb.size);
 309
 310         dev->video_mode.isoc_ctl.buf = *buf;
 311
 312         return;
 313 }
 314
 315 /*
 316  * Controls the isoc copy of each urb packet
 317  */
 318 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 319 {
 320         struct cx231xx_buffer *buf;
 321         struct cx231xx_dmaqueue *dma_q = urb->context;
 322         unsigned char *outp = NULL;
 323         int i, rc = 1;
 324         unsigned char *p_buffer;
 325         u32 bytes_parsed = 0, buffer_size = 0;
 326         u8 sav_eav = 0;
 327
 328         if (!dev)
 329                 return 0;
 330
 331         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 332                 return 0;
 333
 334         if (urb->status < 0) {
 335                 print_err_status(dev, -1, urb->status);
 336                 if (urb->status == -ENOENT)
 337                         return 0;
 338         }
 339
 340         buf = dev->video_mode.isoc_ctl.buf;
 341         if (buf != NULL)
 342                 outp = videobuf_to_vmalloc(&buf->vb);
 343
 344         for (i = 0; i < urb->number_of_packets; i++) {
 345                 int status = urb->iso_frame_desc[i].status;
 346
 347                 if (status < 0) {
 348                         print_err_status(dev, i, status);
 349                         if (urb->iso_frame_desc[i].status != -EPROTO)
 350                                 continue;
 351                 }
 352
 353                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 354                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 355                         continue;
 356                 }
 357                 if (urb->iso_frame_desc[i].actual_length >
 358                     dev->video_mode.max_pkt_size) {
 359                         cx231xx_isocdbg("packet bigger than packet size");
 360                         continue;
 361                 }
 362
 363                 /*  get buffer pointer and length */
 364                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 365                 buffer_size = urb->iso_frame_desc[i].actual_length;
 366                 bytes_parsed = 0;
 367
 368                 if (dma_q->is_partial_line) {
 369                         /* Handle the case of a partial line */
 370                         sav_eav = dma_q->last_sav;
 371                 } else {
 372                         /* Check for a SAV/EAV overlapping
 373                                 the buffer boundary */
 374                         sav_eav =
 375                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 376                                                           dma_q->partial_buf,
 377                                                           &bytes_parsed);
 378                 }
 379
 380                 sav_eav &= 0xF0;
 381                 /* Get the first line if we have some portion of an SAV/EAV from
 382                    the last buffer or a partial line  */
 383                 if (sav_eav) {
 384                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 385                                 sav_eav,        /* SAV/EAV */
 386                                 p_buffer + bytes_parsed,        /* p_buffer */
 387                                 buffer_size - bytes_parsed);/* buf size */
 388                 }
 389
 390                 /* Now parse data that is completely in this buffer */
 391                 /* dma_q->is_partial_line = 0;  */
 392
 393                 while (bytes_parsed < buffer_size) {
 394                         u32 bytes_used = 0;
 395
 396                         sav_eav = cx231xx_find_next_SAV_EAV(
 397                                 p_buffer + bytes_parsed,        /* p_buffer */
 398                                 buffer_size - bytes_parsed,     /* buf size */
 399                                 &bytes_used);/* bytes used to get SAV/EAV */
 400
 401                         bytes_parsed += bytes_used;
 402
 403                         sav_eav &= 0xF0;
 404                         if (sav_eav && (bytes_parsed < buffer_size)) {
 405                                 bytes_parsed += cx231xx_get_video_line(dev,
 406                                         dma_q, sav_eav, /* SAV/EAV */
 407                                         p_buffer + bytes_parsed,/* p_buffer */
 408                                         buffer_size - bytes_parsed);/*buf size*/
 409                         }
 410                 }
 411
 412                 /* Save the last four bytes of the buffer so we can check the
 413                    buffer boundary condition next time */
 414                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 415                 bytes_parsed = 0;
 416
 417         }
 418         return rc;
 419 }
 420
 421 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 422                                  u32 *p_bytes_used)
 423 {
 424         u32 bytes_used;
 425         u8 boundary_bytes[8];
 426         u8 sav_eav = 0;
 427
 428         *p_bytes_used = 0;
 429
 430         /* Create an array of the last 4 bytes of the last buffer and the first
 431            4 bytes of the current buffer. */
 432
 433         memcpy(boundary_bytes, partial_buf, 4);
 434         memcpy(boundary_bytes + 4, p_buffer, 4);
 435
 436         /* Check for the SAV/EAV in the boundary buffer */
 437         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 438                                             &bytes_used);
 439
 440         if (sav_eav) {
 441                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 442                    only those used in the new buffer */
 443                 *p_bytes_used = bytes_used - 4;
 444         }
 445
 446         return sav_eav;
 447 }
 448
 449 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 450 {
 451         u32 i;
 452         u8 sav_eav = 0;
 453
 454         /*
 455          * Don't search if the buffer size is less than 4.  It causes a page
 456          * fault since buffer_size - 4 evaluates to a large number in that
 457          * case.
 458          */
 459         if (buffer_size < 4) {
 460                 *p_bytes_used = buffer_size;
 461                 return 0;
 462         }
 463
 464         for (i = 0; i < (buffer_size - 3); i++) {
 465
 466                 if ((p_buffer[i] == 0xFF) &&
 467                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 468
 469                         *p_bytes_used = i + 4;
 470                         sav_eav = p_buffer[i + 3];
 471                         return sav_eav;
 472                 }
 473         }
 474
 475         *p_bytes_used = buffer_size;
 476         return 0;
 477 }
 478
 479 u32 cx231xx_get_video_line(struct cx231xx *dev,
 480                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 481                            u8 *p_buffer, u32 buffer_size)
 482 {
 483         u32 bytes_copied = 0;
 484         int current_field = -1;
 485
 486         switch (sav_eav) {
 487         case SAV_ACTIVE_VIDEO_FIELD1:
 488                 /* looking for skipped line which occurred in PAL 720x480 mode.
 489                    In this case, there will be no active data contained
 490                    between the SAV and EAV */
 491                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 492                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 493                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 494                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 495                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 496                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 497                         return bytes_copied;
 498                 current_field = 1;
 499                 break;
 500
 501         case SAV_ACTIVE_VIDEO_FIELD2:
 502                 /* looking for skipped line which occurred in PAL 720x480 mode.
 503                    In this case, there will be no active data contained between
 504                    the SAV and EAV */
 505                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 506                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 507                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 508                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 509                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 510                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 511                         return bytes_copied;
 512                 current_field = 2;
 513                 break;
 514         }
 515
 516         dma_q->last_sav = sav_eav;
 517
 518         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 519                                                buffer_size, current_field);
 520
 521         return bytes_copied;
 522 }
 523
 524 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 525                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 526                             u32 length, int field_number)
 527 {
 528         u32 bytes_to_copy;
 529         struct cx231xx_buffer *buf;
 530         u32 _line_size = dev->width * 2;
 531
 532         if (dma_q->current_field != field_number)
 533                 cx231xx_reset_video_buffer(dev, dma_q);
 534
 535         /* get the buffer pointer */
 536         buf = dev->video_mode.isoc_ctl.buf;
 537
 538         /* Remember the field number for next time */
 539         dma_q->current_field = field_number;
 540
 541         bytes_to_copy = dma_q->bytes_left_in_line;
 542         if (bytes_to_copy > length)
 543                 bytes_to_copy = length;
 544
 545         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 546                 dma_q->bytes_left_in_line -= bytes_to_copy;
 547                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 548                                           0 : 1;
 549                 return 0;
 550         }
 551
 552         dma_q->is_partial_line = 1;
 553
 554         /* If we don't have a buffer, just return the number of bytes we would
 555            have copied if we had a buffer. */
 556         if (!buf) {
 557                 dma_q->bytes_left_in_line -= bytes_to_copy;
 558                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 559                                          ? 0 : 1;
 560                 return bytes_to_copy;
 561         }
 562
 563         /* copy the data to video buffer */
 564         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 565
 566         dma_q->pos += bytes_to_copy;
 567         dma_q->bytes_left_in_line -= bytes_to_copy;
 568
 569         if (dma_q->bytes_left_in_line == 0) {
 570                 dma_q->bytes_left_in_line = _line_size;
 571                 dma_q->lines_completed++;
 572                 dma_q->is_partial_line = 0;
 573
 574                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 575                         buffer_filled(dev, dma_q, buf);
 576
 577                         dma_q->pos = 0;
 578                         buf = NULL;
 579                         dma_q->lines_completed = 0;
 580                 }
 581         }
 582
 583         return bytes_to_copy;
 584 }
 585
 586 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 587                                 struct cx231xx_dmaqueue *dma_q)
 588 {
 589         struct cx231xx_buffer *buf;
 590
 591         /* handle the switch from field 1 to field 2 */
 592         if (dma_q->current_field == 1) {
 593                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 594                         dma_q->field1_done = 1;
 595                 else
 596                         dma_q->field1_done = 0;
 597         }
 598
 599         buf = dev->video_mode.isoc_ctl.buf;
 600
 601         if (buf == NULL) {
 602                 u8 *outp = NULL;
 603                 /* first try to get the buffer */
 604                 get_next_buf(dma_q, &buf);
 605
 606                 if (buf)
 607                         outp = videobuf_to_vmalloc(&buf->vb);
 608
 609                 dma_q->pos = 0;
 610                 dma_q->field1_done = 0;
 611                 dma_q->current_field = -1;
 612         }
 613
 614         /* reset the counters */
 615         dma_q->bytes_left_in_line = dev->width << 1;
 616         dma_q->lines_completed = 0;
 617 }
 618
 619 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 620                     u8 *p_buffer, u32 bytes_to_copy)
 621 {
 622         u8 *p_out_buffer = NULL;
 623         u32 current_line_bytes_copied = 0;
 624         struct cx231xx_buffer *buf;
 625         u32 _line_size = dev->width << 1;
 626         void *startwrite;
 627         int offset, lencopy;
 628
 629         buf = dev->video_mode.isoc_ctl.buf;
 630
 631         if (buf == NULL)
 632                 return -1;
 633
 634         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 635
 636         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 637
 638         /* Offset field 2 one line from the top of the buffer */
 639         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 640
 641         /* Offset for field 2 */
 642         startwrite = p_out_buffer + offset;
 643
 644         /* lines already completed in the current field */
 645         startwrite += (dma_q->lines_completed * _line_size * 2);
 646
 647         /* bytes already completed in the current line */
 648         startwrite += current_line_bytes_copied;
 649
 650         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 651                   bytes_to_copy : dma_q->bytes_left_in_line;
 652
 653         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 654                 return 0;
 655
 656         /* The below copies the UYVY data straight into video buffer */
 657         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 658
 659         return 0;
 660 }
 661
 662 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 663 {
 664         u16 i;
 665
 666         if (len <= 0)
 667                 return;
 668
 669         for (i = 0; i < len / 2; i++)
 670                 to[i] = (from[i] << 8) | (from[i] >> 8);
 671 }
 672
 673 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 674 {
 675         u8 buffer_complete = 0;
 676
 677         /* Dual field stream */
 678         buffer_complete = ((dma_q->current_field == 2) &&
 679                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 680                             dma_q->field1_done);
 681
 682         return buffer_complete;
 683 }
 684
 685 /* ------------------------------------------------------------------
 686         Videobuf operations
 687    ------------------------------------------------------------------*/
 688
 689 static int
 690 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 691 {
 692         struct cx231xx_fh *fh = vq->priv_data;
 693         struct cx231xx *dev = fh->dev;
 694         struct v4l2_frequency f;
 695
 696         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 697         if (0 == *count)
 698                 *count = CX231XX_DEF_BUF;
 699
 700         if (*count < CX231XX_MIN_BUF)
 701                 *count = CX231XX_MIN_BUF;
 702
 703         /* Ask tuner to go to analog mode */
 704         memset(&f, 0, sizeof(f));
 705         f.frequency = dev->ctl_freq;
 706         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 707
 708         call_all(dev, tuner, s_frequency, &f);
 709
 710         return 0;
 711 }
 712
 713 /* This is called *without* dev->slock held; please keep it that way */
 714 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 715 {
 716         struct cx231xx_fh *fh = vq->priv_data;
 717         struct cx231xx *dev = fh->dev;
 718         unsigned long flags = 0;
 719
 720         if (in_interrupt())
 721                 BUG();
 722
 723         /* We used to wait for the buffer to finish here, but this didn't work
 724            because, as we were keeping the state as VIDEOBUF_QUEUED,
 725            videobuf_queue_cancel marked it as finished for us.
 726            (Also, it could wedge forever if the hardware was misconfigured.)
 727
 728            This should be safe; by the time we get here, the buffer isn't
 729            queued anymore. If we ever start marking the buffers as
 730            VIDEOBUF_ACTIVE, it won't be, though.
 731          */
 732         spin_lock_irqsave(&dev->video_mode.slock, flags);
 733         if (dev->video_mode.isoc_ctl.buf == buf)
 734                 dev->video_mode.isoc_ctl.buf = NULL;
 735         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 736
 737         videobuf_vmalloc_free(&buf->vb);
 738         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 739 }
 740
 741 static int
 742 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 743                enum v4l2_field field)
 744 {
 745         struct cx231xx_fh *fh = vq->priv_data;
 746         struct cx231xx_buffer *buf =
 747             container_of(vb, struct cx231xx_buffer, vb);
 748         struct cx231xx *dev = fh->dev;
 749         int rc = 0, urb_init = 0;
 750
 751         /* The only currently supported format is 16 bits/pixel */
 752         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 753                         + 7) >> 3;
 754         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 755                 return -EINVAL;
 756
 757         buf->vb.width = dev->width;
 758         buf->vb.height = dev->height;
 759         buf->vb.field = field;
 760
 761         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 762                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 763                 if (rc < 0)
 764                         goto fail;
 765         }
 766
 767         if (!dev->video_mode.isoc_ctl.num_bufs)
 768                 urb_init = 1;
 769
 770         if (urb_init) {
 771                 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 772                                        CX231XX_NUM_BUFS,
 773                                        dev->video_mode.max_pkt_size,
 774                                        cx231xx_isoc_copy);
 775                 if (rc < 0)
 776                         goto fail;
 777         }
 778
 779         buf->vb.state = VIDEOBUF_PREPARED;
 780         return 0;
 781
 782 fail:
 783         free_buffer(vq, buf);
 784         return rc;
 785 }
 786
 787 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 788 {
 789         struct cx231xx_buffer *buf =
 790             container_of(vb, struct cx231xx_buffer, vb);
 791         struct cx231xx_fh *fh = vq->priv_data;
 792         struct cx231xx *dev = fh->dev;
 793         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 794
 795         buf->vb.state = VIDEOBUF_QUEUED;
 796         list_add_tail(&buf->vb.queue, &vidq->active);
 797
 798 }
 799
 800 static void buffer_release(struct videobuf_queue *vq,
 801                            struct videobuf_buffer *vb)
 802 {
 803         struct cx231xx_buffer *buf =
 804             container_of(vb, struct cx231xx_buffer, vb);
 805         struct cx231xx_fh *fh = vq->priv_data;
 806         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 807
 808         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 809
 810         free_buffer(vq, buf);
 811 }
 812
 813 static struct videobuf_queue_ops cx231xx_video_qops = {
 814         .buf_setup = buffer_setup,
 815         .buf_prepare = buffer_prepare,
 816         .buf_queue = buffer_queue,
 817         .buf_release = buffer_release,
 818 };
 819
 820 /*********************  v4l2 interface  **************************************/
 821
 822 void video_mux(struct cx231xx *dev, int index)
 823 {
 824         dev->video_input = index;
 825         dev->ctl_ainput = INPUT(index)->amux;
 826
 827         cx231xx_set_video_input_mux(dev, index);
 828
 829         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 830
 831         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 832
 833         cx231xx_info("video_mux : %d\n", index);
 834
 835         /* do mode control overrides if required */
 836         cx231xx_do_mode_ctrl_overrides(dev);
 837 }
 838
 839 /* Usage lock check functions */
 840 static int res_get(struct cx231xx_fh *fh)
 841 {
 842         struct cx231xx *dev = fh->dev;
 843         int rc = 0;
 844
 845         /* This instance already has stream_on */
 846         if (fh->stream_on)
 847                 return rc;
 848
 849         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 850                 if (dev->stream_on)
 851                         return -EBUSY;
 852                 dev->stream_on = 1;
 853         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 854                 if (dev->vbi_stream_on)
 855                         return -EBUSY;
 856                 dev->vbi_stream_on = 1;
 857         } else
 858                 return -EINVAL;
 859
 860         fh->stream_on = 1;
 861
 862         return rc;
 863 }
 864
 865 static int res_check(struct cx231xx_fh *fh)
 866 {
 867         return fh->stream_on;
 868 }
 869
 870 static void res_free(struct cx231xx_fh *fh)
 871 {
 872         struct cx231xx *dev = fh->dev;
 873
 874         fh->stream_on = 0;
 875
 876         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 877                 dev->stream_on = 0;
 878         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 879                 dev->vbi_stream_on = 0;
 880 }
 881
 882 static int check_dev(struct cx231xx *dev)
 883 {
 884         if (dev->state & DEV_DISCONNECTED) {
 885                 cx231xx_errdev("v4l2 ioctl: device not present\n");
 886                 return -ENODEV;
 887         }
 888
 889         if (dev->state & DEV_MISCONFIGURED) {
 890                 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
 891                                "close and open it again\n");
 892                 return -EIO;
 893         }
 894         return 0;
 895 }
 896
 897 static void get_scale(struct cx231xx *dev,
 898                       unsigned int width, unsigned int height,
 899                       unsigned int *hscale, unsigned int *vscale)
 900 {
 901         unsigned int maxw = norm_maxw(dev);
 902         unsigned int maxh = norm_maxh(dev);
 903
 904         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 905         if (*hscale >= 0x4000)
 906                 *hscale = 0x3fff;
 907
 908         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 909         if (*vscale >= 0x4000)
 910                 *vscale = 0x3fff;
 911 }
 912
 913 /* ------------------------------------------------------------------
 914         IOCTL vidioc handling
 915    ------------------------------------------------------------------*/
 916
 917 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 918                                 struct v4l2_format *f)
 919 {
 920         struct cx231xx_fh *fh = priv;
 921         struct cx231xx *dev = fh->dev;
 922
 923         mutex_lock(&dev->lock);
 924
 925         f->fmt.pix.width = dev->width;
 926         f->fmt.pix.height = dev->height;
 927         f->fmt.pix.pixelformat = dev->format->fourcc;
 928         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 929         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 930         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 931
 932         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 933
 934         mutex_unlock(&dev->lock);
 935
 936         return 0;
 937 }
 938
 939 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 940 {
 941         unsigned int i;
 942
 943         for (i = 0; i < ARRAY_SIZE(format); i++)
 944                 if (format[i].fourcc == fourcc)
 945                         return &format[i];
 946
 947         return NULL;
 948 }
 949
 950 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 951                                   struct v4l2_format *f)
 952 {
 953         struct cx231xx_fh *fh = priv;
 954         struct cx231xx *dev = fh->dev;
 955         unsigned int width = f->fmt.pix.width;
 956         unsigned int height = f->fmt.pix.height;
 957         unsigned int maxw = norm_maxw(dev);
 958         unsigned int maxh = norm_maxh(dev);
 959         unsigned int hscale, vscale;
 960         struct cx231xx_fmt *fmt;
 961
 962         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 963         if (!fmt) {
 964                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 965                                  f->fmt.pix.pixelformat);
 966                 return -EINVAL;
 967         }
 968
 969         /* width must even because of the YUYV format
 970            height must be even because of interlacing */
 971         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 972
 973         get_scale(dev, width, height, &hscale, &vscale);
 974
 975         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 976         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 977
 978         f->fmt.pix.width = width;
 979         f->fmt.pix.height = height;
 980         f->fmt.pix.pixelformat = fmt->fourcc;
 981         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 982         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 983         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 984         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 985
 986         return 0;
 987 }
 988
 989 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 990                                 struct v4l2_format *f)
 991 {
 992         struct cx231xx_fh *fh = priv;
 993         struct cx231xx *dev = fh->dev;
 994         int rc;
 995         struct cx231xx_fmt *fmt;
 996
 997         rc = check_dev(dev);
 998         if (rc < 0)
 999                 return rc;
1000
1001         mutex_lock(&dev->lock);
1002
1003         vidioc_try_fmt_vid_cap(file, priv, f);
1004
1005         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1006         if (!fmt) {
1007                 rc = -EINVAL;
1008                 goto out;
1009         }
1010
1011         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1012                 cx231xx_errdev("%s queue busy\n", __func__);
1013                 rc = -EBUSY;
1014                 goto out;
1015         }
1016
1017         if (dev->stream_on && !fh->stream_on) {
1018                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1019                 rc = -EBUSY;
1020                 goto out;
1021         }
1022
1023         /* set new image size */
1024         dev->width = f->fmt.pix.width;
1025         dev->height = f->fmt.pix.height;
1026         dev->format = fmt;
1027         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1028
1029         call_all(dev, video, s_fmt, f);
1030
1031         /* Set the correct alternate setting for this resolution */
1032         cx231xx_resolution_set(dev);
1033
1034 out:
1035         mutex_unlock(&dev->lock);
1036         return rc;
1037 }
1038
1039 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1040 {
1041         struct cx231xx_fh *fh = priv;
1042         struct cx231xx *dev = fh->dev;
1043
1044         *id = dev->norm;
1045         return 0;
1046 }
1047
1048 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1049 {
1050         struct cx231xx_fh *fh = priv;
1051         struct cx231xx *dev = fh->dev;
1052         struct v4l2_format f;
1053         int rc;
1054
1055         rc = check_dev(dev);
1056         if (rc < 0)
1057                 return rc;
1058
1059         cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1060
1061         mutex_lock(&dev->lock);
1062         dev->norm = *norm;
1063
1064         /* Adjusts width/height, if needed */
1065         f.fmt.pix.width = dev->width;
1066         f.fmt.pix.height = dev->height;
1067         vidioc_try_fmt_vid_cap(file, priv, &f);
1068
1069         /* set new image size */
1070         dev->width = f.fmt.pix.width;
1071         dev->height = f.fmt.pix.height;
1072         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1073
1074         call_all(dev, core, s_std, dev->norm);
1075
1076         mutex_unlock(&dev->lock);
1077
1078         cx231xx_resolution_set(dev);
1079
1080         /* do mode control overrides */
1081         cx231xx_do_mode_ctrl_overrides(dev);
1082
1083         return 0;
1084 }
1085
1086 static const char *iname[] = {
1087         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1088         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1089         [CX231XX_VMUX_TELEVISION] = "Television",
1090         [CX231XX_VMUX_CABLE]      = "Cable TV",
1091         [CX231XX_VMUX_DVB]        = "DVB",
1092         [CX231XX_VMUX_DEBUG]      = "for debug only",
1093 };
1094
1095 static int vidioc_enum_input(struct file *file, void *priv,
1096                              struct v4l2_input *i)
1097 {
1098         struct cx231xx_fh *fh = priv;
1099         struct cx231xx *dev = fh->dev;
1100         unsigned int n;
1101
1102         n = i->index;
1103         if (n >= MAX_CX231XX_INPUT)
1104                 return -EINVAL;
1105         if (0 == INPUT(n)->type)
1106                 return -EINVAL;
1107
1108         i->index = n;
1109         i->type = V4L2_INPUT_TYPE_CAMERA;
1110
1111         strcpy(i->name, iname[INPUT(n)->type]);
1112
1113         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1114             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1115                 i->type = V4L2_INPUT_TYPE_TUNER;
1116
1117         i->std = dev->vdev->tvnorms;
1118
1119         return 0;
1120 }
1121
1122 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1123 {
1124         struct cx231xx_fh *fh = priv;
1125         struct cx231xx *dev = fh->dev;
1126
1127         *i = dev->video_input;
1128
1129         return 0;
1130 }
1131
1132 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1133 {
1134         struct cx231xx_fh *fh = priv;
1135         struct cx231xx *dev = fh->dev;
1136         int rc;
1137
1138         rc = check_dev(dev);
1139         if (rc < 0)
1140                 return rc;
1141
1142         if (i >= MAX_CX231XX_INPUT)
1143                 return -EINVAL;
1144         if (0 == INPUT(i)->type)
1145                 return -EINVAL;
1146
1147         mutex_lock(&dev->lock);
1148
1149         video_mux(dev, i);
1150
1151         mutex_unlock(&dev->lock);
1152         return 0;
1153 }
1154
1155 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1156 {
1157         struct cx231xx_fh *fh = priv;
1158         struct cx231xx *dev = fh->dev;
1159
1160         switch (a->index) {
1161         case CX231XX_AMUX_VIDEO:
1162                 strcpy(a->name, "Television");
1163                 break;
1164         case CX231XX_AMUX_LINE_IN:
1165                 strcpy(a->name, "Line In");
1166                 break;
1167         default:
1168                 return -EINVAL;
1169         }
1170
1171         a->index = dev->ctl_ainput;
1172         a->capability = V4L2_AUDCAP_STEREO;
1173
1174         return 0;
1175 }
1176
1177 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1178 {
1179         struct cx231xx_fh *fh = priv;
1180         struct cx231xx *dev = fh->dev;
1181         int status = 0;
1182
1183         /* Doesn't allow manual routing */
1184         if (a->index != dev->ctl_ainput)
1185                 return -EINVAL;
1186
1187         dev->ctl_ainput = INPUT(a->index)->amux;
1188         status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1189
1190         return status;
1191 }
1192
1193 static int vidioc_queryctrl(struct file *file, void *priv,
1194                             struct v4l2_queryctrl *qc)
1195 {
1196         struct cx231xx_fh *fh = priv;
1197         struct cx231xx *dev = fh->dev;
1198         int id = qc->id;
1199         int i;
1200         int rc;
1201
1202         rc = check_dev(dev);
1203         if (rc < 0)
1204                 return rc;
1205
1206         qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1207         if (unlikely(qc->id == 0))
1208                 return -EINVAL;
1209
1210         memset(qc, 0, sizeof(*qc));
1211
1212         qc->id = id;
1213
1214         if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1215                 return -EINVAL;
1216
1217         for (i = 0; i < CX231XX_CTLS; i++)
1218                 if (cx231xx_ctls[i].v.id == qc->id)
1219                         break;
1220
1221         if (i == CX231XX_CTLS) {
1222                 *qc = no_ctl;
1223                 return 0;
1224         }
1225         *qc = cx231xx_ctls[i].v;
1226
1227         mutex_lock(&dev->lock);
1228         call_all(dev, core, queryctrl, qc);
1229         mutex_unlock(&dev->lock);
1230
1231         if (qc->type)
1232                 return 0;
1233         else
1234                 return -EINVAL;
1235 }
1236
1237 static int vidioc_g_ctrl(struct file *file, void *priv,
1238                          struct v4l2_control *ctrl)
1239 {
1240         struct cx231xx_fh *fh = priv;
1241         struct cx231xx *dev = fh->dev;
1242         int rc;
1243
1244         rc = check_dev(dev);
1245         if (rc < 0)
1246                 return rc;
1247
1248         mutex_lock(&dev->lock);
1249         call_all(dev, core, g_ctrl, ctrl);
1250         mutex_unlock(&dev->lock);
1251         return rc;
1252 }
1253
1254 static int vidioc_s_ctrl(struct file *file, void *priv,
1255                          struct v4l2_control *ctrl)
1256 {
1257         struct cx231xx_fh *fh = priv;
1258         struct cx231xx *dev = fh->dev;
1259         int rc;
1260
1261         rc = check_dev(dev);
1262         if (rc < 0)
1263                 return rc;
1264
1265         mutex_lock(&dev->lock);
1266         call_all(dev, core, s_ctrl, ctrl);
1267         mutex_unlock(&dev->lock);
1268         return rc;
1269 }
1270
1271 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1272 {
1273         struct cx231xx_fh *fh = priv;
1274         struct cx231xx *dev = fh->dev;
1275         int rc;
1276
1277         rc = check_dev(dev);
1278         if (rc < 0)
1279                 return rc;
1280
1281         if (0 != t->index)
1282                 return -EINVAL;
1283
1284         strcpy(t->name, "Tuner");
1285
1286         t->type = V4L2_TUNER_ANALOG_TV;
1287         t->capability = V4L2_TUNER_CAP_NORM;
1288         t->rangehigh = 0xffffffffUL;
1289         t->signal = 0xffff;     /* LOCKED */
1290
1291         return 0;
1292 }
1293
1294 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1295 {
1296         struct cx231xx_fh *fh = priv;
1297         struct cx231xx *dev = fh->dev;
1298         int rc;
1299
1300         rc = check_dev(dev);
1301         if (rc < 0)
1302                 return rc;
1303
1304         if (0 != t->index)
1305                 return -EINVAL;
1306 #if 0
1307         mutex_lock(&dev->lock);
1308         call_all(dev, tuner, s_tuner, t);
1309         mutex_unlock(&dev->lock);
1310 #endif
1311         return 0;
1312 }
1313
1314 static int vidioc_g_frequency(struct file *file, void *priv,
1315                               struct v4l2_frequency *f)
1316 {
1317         struct cx231xx_fh *fh = priv;
1318         struct cx231xx *dev = fh->dev;
1319
1320         mutex_lock(&dev->lock);
1321         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1322         f->frequency = dev->ctl_freq;
1323
1324         call_all(dev, tuner, g_frequency, f);
1325
1326         mutex_unlock(&dev->lock);
1327
1328         return 0;
1329 }
1330
1331 static int vidioc_s_frequency(struct file *file, void *priv,
1332                               struct v4l2_frequency *f)
1333 {
1334         struct cx231xx_fh *fh = priv;
1335         struct cx231xx *dev = fh->dev;
1336         int rc;
1337
1338         rc = check_dev(dev);
1339         if (rc < 0)
1340                 return rc;
1341
1342         if (0 != f->tuner)
1343                 return -EINVAL;
1344
1345         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1346                 return -EINVAL;
1347         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1348                 return -EINVAL;
1349
1350         /* set pre channel change settings in DIF first */
1351         rc = cx231xx_tuner_pre_channel_change(dev);
1352
1353         mutex_lock(&dev->lock);
1354
1355         dev->ctl_freq = f->frequency;
1356
1357         if (dev->tuner_type == TUNER_XC5000) {
1358                 if (dev->cx231xx_set_analog_freq != NULL)
1359                         dev->cx231xx_set_analog_freq(dev, f->frequency);
1360         } else
1361                 call_all(dev, tuner, s_frequency, f);
1362
1363         mutex_unlock(&dev->lock);
1364
1365         /* set post channel change settings in DIF first */
1366         rc = cx231xx_tuner_post_channel_change(dev);
1367
1368         cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1369
1370         return rc;
1371 }
1372
1373 #ifdef CONFIG_VIDEO_ADV_DEBUG
1374
1375 /*
1376   -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1377                                 chip=<chip>[,min=<addr>,max=<addr>]
1378                      dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1379   -r, --set-register=type=<host/i2cdrv/i2caddr>,
1380                                 chip=<chip>,reg=<addr>,val=<val>
1381                      set the register [VIDIOC_DBG_S_REGISTER]
1382
1383   if type == host, then <chip> is the hosts chip ID (default 0)
1384   if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1385   if type == i2caddr, then <chip> is the 7-bit I2C address
1386 */
1387
1388 static int vidioc_g_register(struct file *file, void *priv,
1389                              struct v4l2_dbg_register *reg)
1390 {
1391         struct cx231xx_fh *fh = priv;
1392         struct cx231xx *dev = fh->dev;
1393         int ret = 0;
1394         u8 value[4] = { 0, 0, 0, 0 };
1395         u32 data = 0;
1396
1397         switch (reg->match.type) {
1398         case V4L2_CHIP_MATCH_HOST:
1399                 switch (reg->match.addr) {
1400                 case 0: /* Cx231xx - internal registers */
1401                         ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1402                                                   (u16)reg->reg, value, 4);
1403                         reg->val = value[0] | value[1] << 8 |
1404                                    value[2] << 16 | value[3] << 24;
1405                         break;
1406                 case 1: /* AFE - read byte */
1407                         ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1408                                                   (u16)reg->reg, 2, &data, 1);
1409                         reg->val = le32_to_cpu(data & 0xff);
1410                         break;
1411                 case 14: /* AFE - read dword */
1412                         ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1413                                                   (u16)reg->reg, 2, &data, 4);
1414                         reg->val = le32_to_cpu(data);
1415                         break;
1416                 case 2: /* Video Block - read byte */
1417                         ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1418                                                   (u16)reg->reg, 2, &data, 1);
1419                         reg->val = le32_to_cpu(data & 0xff);
1420                         break;
1421                 case 24: /* Video Block - read dword */
1422                         ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1423                                                   (u16)reg->reg, 2, &data, 4);
1424                         reg->val = le32_to_cpu(data);
1425                         break;
1426                 case 3: /* I2S block - read byte */
1427                         ret = cx231xx_read_i2c_data(dev,
1428                                                     I2S_BLK_DEVICE_ADDRESS,
1429                                                     (u16)reg->reg, 1,
1430                                                     &data, 1);
1431                         reg->val = le32_to_cpu(data & 0xff);
1432                         break;
1433                 case 34: /* I2S Block - read dword */
1434                         ret =
1435                             cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1436                                                   (u16)reg->reg, 1, &data, 4);
1437                         reg->val = le32_to_cpu(data);
1438                         break;
1439                 }
1440                 return ret < 0 ? ret : 0;
1441
1442         case V4L2_CHIP_MATCH_I2C_DRIVER:
1443                 call_all(dev, core, g_register, reg);
1444                 return 0;
1445         case V4L2_CHIP_MATCH_I2C_ADDR:
1446                 /* Not supported yet */
1447                 return -EINVAL;
1448         default:
1449                 if (!v4l2_chip_match_host(&reg->match))
1450                         return -EINVAL;
1451         }
1452
1453         mutex_lock(&dev->lock);
1454         call_all(dev, core, g_register, reg);
1455         mutex_unlock(&dev->lock);
1456
1457         return ret;
1458 }
1459
1460 static int vidioc_s_register(struct file *file, void *priv,
1461                              struct v4l2_dbg_register *reg)
1462 {
1463         struct cx231xx_fh *fh = priv;
1464         struct cx231xx *dev = fh->dev;
1465         int ret = 0;
1466         __le64 buf;
1467         u32 value;
1468         u8 data[4] = { 0, 0, 0, 0 };
1469
1470         buf = cpu_to_le64(reg->val);
1471
1472         switch (reg->match.type) {
1473         case V4L2_CHIP_MATCH_HOST:
1474                 {
1475                         value = (u32) buf & 0xffffffff;
1476
1477                         switch (reg->match.addr) {
1478                         case 0: /* cx231xx internal registers */
1479                                 data[0] = (u8) value;
1480                                 data[1] = (u8) (value >> 8);
1481                                 data[2] = (u8) (value >> 16);
1482                                 data[3] = (u8) (value >> 24);
1483                                 ret = cx231xx_write_ctrl_reg(dev,
1484                                                            VRT_SET_REGISTER,
1485                                                            (u16)reg->reg, data,
1486                                                            4);
1487                                 break;
1488                         case 1: /* AFE - read byte */
1489                                 ret = cx231xx_write_i2c_data(dev,
1490                                                         AFE_DEVICE_ADDRESS,
1491                                                         (u16)reg->reg, 2,
1492                                                         value, 1);
1493                                 break;
1494                         case 14: /* AFE - read dword */
1495                                 ret = cx231xx_write_i2c_data(dev,
1496                                                         AFE_DEVICE_ADDRESS,
1497                                                         (u16)reg->reg, 2,
1498                                                         value, 4);
1499                                 break;
1500                         case 2: /* Video Block - read byte */
1501                                 ret =
1502                                     cx231xx_write_i2c_data(dev,
1503                                                         VID_BLK_I2C_ADDRESS,
1504                                                         (u16)reg->reg, 2,
1505                                                         value, 1);
1506                                 break;
1507                         case 24: /* Video Block - read dword */
1508                                 ret =
1509                                     cx231xx_write_i2c_data(dev,
1510                                                         VID_BLK_I2C_ADDRESS,
1511                                                         (u16)reg->reg, 2,
1512                                                         value, 4);
1513                                 break;
1514                         case 3: /* I2S block - read byte */
1515                                 ret =
1516                                     cx231xx_write_i2c_data(dev,
1517                                                         I2S_BLK_DEVICE_ADDRESS,
1518                                                         (u16)reg->reg, 1,
1519                                                         value, 1);
1520                                 break;
1521                         case 34: /* I2S block - read dword */
1522                                 ret =
1523                                     cx231xx_write_i2c_data(dev,
1524                                                         I2S_BLK_DEVICE_ADDRESS,
1525                                                         (u16)reg->reg, 1,
1526                                                         value, 4);
1527                                 break;
1528                         }
1529                 }
1530                 return ret < 0 ? ret : 0;
1531
1532         default:
1533                 break;
1534         }
1535
1536         mutex_lock(&dev->lock);
1537         call_all(dev, core, s_register, reg);
1538         mutex_unlock(&dev->lock);
1539
1540         return ret;
1541 }
1542 #endif
1543
1544 static int vidioc_cropcap(struct file *file, void *priv,
1545                           struct v4l2_cropcap *cc)
1546 {
1547         struct cx231xx_fh *fh = priv;
1548         struct cx231xx *dev = fh->dev;
1549
1550         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1551                 return -EINVAL;
1552
1553         cc->bounds.left = 0;
1554         cc->bounds.top = 0;
1555         cc->bounds.width = dev->width;
1556         cc->bounds.height = dev->height;
1557         cc->defrect = cc->bounds;
1558         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1559         cc->pixelaspect.denominator = 59;
1560
1561         return 0;
1562 }
1563
1564 static int vidioc_streamon(struct file *file, void *priv,
1565                            enum v4l2_buf_type type)
1566 {
1567         struct cx231xx_fh *fh = priv;
1568         struct cx231xx *dev = fh->dev;
1569         int rc;
1570
1571         rc = check_dev(dev);
1572         if (rc < 0)
1573                 return rc;
1574
1575         mutex_lock(&dev->lock);
1576         rc = res_get(fh);
1577
1578         if (likely(rc >= 0))
1579                 rc = videobuf_streamon(&fh->vb_vidq);
1580
1581         call_all(dev, video, s_stream, 1);
1582
1583         mutex_unlock(&dev->lock);
1584
1585         return rc;
1586 }
1587
1588 static int vidioc_streamoff(struct file *file, void *priv,
1589                             enum v4l2_buf_type type)
1590 {
1591         struct cx231xx_fh *fh = priv;
1592         struct cx231xx *dev = fh->dev;
1593         int rc;
1594
1595         rc = check_dev(dev);
1596         if (rc < 0)
1597                 return rc;
1598
1599         if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1600             (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1601                 return -EINVAL;
1602         if (type != fh->type)
1603                 return -EINVAL;
1604
1605         mutex_lock(&dev->lock);
1606
1607         cx25840_call(dev, video, s_stream, 0);
1608
1609         videobuf_streamoff(&fh->vb_vidq);
1610         res_free(fh);
1611
1612         mutex_unlock(&dev->lock);
1613
1614         return 0;
1615 }
1616
1617 static int vidioc_querycap(struct file *file, void *priv,
1618                            struct v4l2_capability *cap)
1619 {
1620         struct cx231xx_fh *fh = priv;
1621         struct cx231xx *dev = fh->dev;
1622
1623         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1624         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1625         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1626
1627         cap->version = CX231XX_VERSION_CODE;
1628
1629         cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1630 #if 0
1631                 V4L2_CAP_SLICED_VBI_CAPTURE |
1632 #endif
1633                 V4L2_CAP_VIDEO_CAPTURE  |
1634                 V4L2_CAP_AUDIO          |
1635                 V4L2_CAP_READWRITE      |
1636                 V4L2_CAP_STREAMING;
1637
1638         if (dev->tuner_type != TUNER_ABSENT)
1639                 cap->capabilities |= V4L2_CAP_TUNER;
1640
1641         return 0;
1642 }
1643
1644 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1645                                    struct v4l2_fmtdesc *f)
1646 {
1647         if (unlikely(f->index >= ARRAY_SIZE(format)))
1648                 return -EINVAL;
1649
1650         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1651         f->pixelformat = format[f->index].fourcc;
1652
1653         return 0;
1654 }
1655
1656 /* Sliced VBI ioctls */
1657 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1658                                        struct v4l2_format *f)
1659 {
1660         struct cx231xx_fh *fh = priv;
1661         struct cx231xx *dev = fh->dev;
1662         int rc;
1663
1664         rc = check_dev(dev);
1665         if (rc < 0)
1666                 return rc;
1667
1668         mutex_lock(&dev->lock);
1669
1670         f->fmt.sliced.service_set = 0;
1671
1672         call_all(dev, video, g_fmt, f);
1673
1674         if (f->fmt.sliced.service_set == 0)
1675                 rc = -EINVAL;
1676
1677         mutex_unlock(&dev->lock);
1678         return rc;
1679 }
1680
1681 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1682                                          struct v4l2_format *f)
1683 {
1684         struct cx231xx_fh *fh = priv;
1685         struct cx231xx *dev = fh->dev;
1686         int rc;
1687
1688         rc = check_dev(dev);
1689         if (rc < 0)
1690                 return rc;
1691
1692         mutex_lock(&dev->lock);
1693         call_all(dev, video, g_fmt, f);
1694         mutex_unlock(&dev->lock);
1695
1696         if (f->fmt.sliced.service_set == 0)
1697                 return -EINVAL;
1698
1699         return 0;
1700 }
1701
1702 /* RAW VBI ioctls */
1703
1704 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1705                                 struct v4l2_format *f)
1706 {
1707         struct cx231xx_fh *fh = priv;
1708         struct cx231xx *dev = fh->dev;
1709
1710         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1711             35468950 : 28636363;
1712         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1713         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1714         f->fmt.vbi.offset = 64 * 4;
1715         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1716             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1717         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1718             PAL_VBI_LINES : NTSC_VBI_LINES;
1719         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1720             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1721         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1722
1723         return 0;
1724
1725 }
1726
1727 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1728                                   struct v4l2_format *f)
1729 {
1730         struct cx231xx_fh *fh = priv;
1731         struct cx231xx *dev = fh->dev;
1732
1733         if (dev->vbi_stream_on && !fh->stream_on) {
1734                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1735                 return -EBUSY;
1736         }
1737
1738         f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1739         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1740             35468950 : 28636363;
1741         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1742         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1743         f->fmt.vbi.offset = 244;
1744         f->fmt.vbi.flags = 0;
1745         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1746             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1747         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1748             PAL_VBI_LINES : NTSC_VBI_LINES;
1749         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1750             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1751         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1752
1753         return 0;
1754
1755 }
1756
1757 static int vidioc_reqbufs(struct file *file, void *priv,
1758                           struct v4l2_requestbuffers *rb)
1759 {
1760         struct cx231xx_fh *fh = priv;
1761         struct cx231xx *dev = fh->dev;
1762         int rc;
1763
1764         rc = check_dev(dev);
1765         if (rc < 0)
1766                 return rc;
1767
1768         return videobuf_reqbufs(&fh->vb_vidq, rb);
1769 }
1770
1771 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1772 {
1773         struct cx231xx_fh *fh = priv;
1774         struct cx231xx *dev = fh->dev;
1775         int rc;
1776
1777         rc = check_dev(dev);
1778         if (rc < 0)
1779                 return rc;
1780
1781         return videobuf_querybuf(&fh->vb_vidq, b);
1782 }
1783
1784 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1785 {
1786         struct cx231xx_fh *fh = priv;
1787         struct cx231xx *dev = fh->dev;
1788         int rc;
1789
1790         rc = check_dev(dev);
1791         if (rc < 0)
1792                 return rc;
1793
1794         return videobuf_qbuf(&fh->vb_vidq, b);
1795 }
1796
1797 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1798 {
1799         struct cx231xx_fh *fh = priv;
1800         struct cx231xx *dev = fh->dev;
1801         int rc;
1802
1803         rc = check_dev(dev);
1804         if (rc < 0)
1805                 return rc;
1806
1807         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1808 }
1809
1810 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1811 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1812 {
1813         struct cx231xx_fh *fh = priv;
1814
1815         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1816 }
1817 #endif
1818
1819 /* ----------------------------------------------------------- */
1820 /* RADIO ESPECIFIC IOCTLS                                      */
1821 /* ----------------------------------------------------------- */
1822
1823 static int radio_querycap(struct file *file, void *priv,
1824                           struct v4l2_capability *cap)
1825 {
1826         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1827
1828         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1829         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1830         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1831
1832         cap->version = CX231XX_VERSION_CODE;
1833         cap->capabilities = V4L2_CAP_TUNER;
1834         return 0;
1835 }
1836
1837 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1838 {
1839         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1840
1841         if (unlikely(t->index > 0))
1842                 return -EINVAL;
1843
1844         strcpy(t->name, "Radio");
1845         t->type = V4L2_TUNER_RADIO;
1846
1847         mutex_lock(&dev->lock);
1848         call_all(dev, tuner, s_tuner, t);
1849         mutex_unlock(&dev->lock);
1850
1851         return 0;
1852 }
1853
1854 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1855 {
1856         if (i->index != 0)
1857                 return -EINVAL;
1858         strcpy(i->name, "Radio");
1859         i->type = V4L2_INPUT_TYPE_TUNER;
1860
1861         return 0;
1862 }
1863
1864 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1865 {
1866         if (unlikely(a->index))
1867                 return -EINVAL;
1868
1869         strcpy(a->name, "Radio");
1870         return 0;
1871 }
1872
1873 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1874 {
1875         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1876
1877         if (0 != t->index)
1878                 return -EINVAL;
1879
1880         mutex_lock(&dev->lock);
1881         call_all(dev, tuner, s_tuner, t);
1882         mutex_unlock(&dev->lock);
1883
1884         return 0;
1885 }
1886
1887 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1888 {
1889         return 0;
1890 }
1891
1892 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1893 {
1894         return 0;
1895 }
1896
1897 static int radio_queryctrl(struct file *file, void *priv,
1898                            struct v4l2_queryctrl *c)
1899 {
1900         int i;
1901
1902         if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1903                 return -EINVAL;
1904         if (c->id == V4L2_CID_AUDIO_MUTE) {
1905                 for (i = 0; i < CX231XX_CTLS; i++)
1906                         if (cx231xx_ctls[i].v.id == c->id)
1907                                 break;
1908                 *c = cx231xx_ctls[i].v;
1909         } else
1910                 *c = no_ctl;
1911         return 0;
1912 }
1913
1914 /*
1915  * cx231xx_v4l2_open()
1916  * inits the device and starts isoc transfer
1917  */
1918 static int cx231xx_v4l2_open(struct file *filp)
1919 {
1920         int errCode = 0, radio = 0;
1921         struct video_device *vdev = video_devdata(filp);
1922         struct cx231xx *dev = video_drvdata(filp);
1923         struct cx231xx_fh *fh;
1924         enum v4l2_buf_type fh_type = 0;
1925
1926         switch (vdev->vfl_type) {
1927         case VFL_TYPE_GRABBER:
1928                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1929                 break;
1930         case VFL_TYPE_VBI:
1931                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1932                 break;
1933         case VFL_TYPE_RADIO:
1934                 radio = 1;
1935                 break;
1936         }
1937
1938         mutex_lock(&dev->lock);
1939
1940         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1941                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1942                          dev->users);
1943
1944 #if 0
1945         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1946         if (errCode < 0) {
1947                 cx231xx_errdev
1948                     ("Device locked on digital mode. Can't open analog\n");
1949                 mutex_unlock(&dev->lock);
1950                 return -EBUSY;
1951         }
1952 #endif
1953
1954         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1955         if (!fh) {
1956                 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1957                 mutex_unlock(&dev->lock);
1958                 return -ENOMEM;
1959         }
1960         fh->dev = dev;
1961         fh->radio = radio;
1962         fh->type = fh_type;
1963         filp->private_data = fh;
1964
1965         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1966                 dev->width = norm_maxw(dev);
1967                 dev->height = norm_maxh(dev);
1968                 dev->hscale = 0;
1969                 dev->vscale = 0;
1970
1971                 /* Power up in Analog TV mode */
1972                 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1973
1974 #if 0
1975                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1976 #endif
1977                 cx231xx_resolution_set(dev);
1978
1979                 /* set video alternate setting */
1980                 cx231xx_set_video_alternate(dev);
1981
1982                 /* Needed, since GPIO might have disabled power of
1983                    some i2c device */
1984                 cx231xx_config_i2c(dev);
1985
1986                 /* device needs to be initialized before isoc transfer */
1987                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1988                 video_mux(dev, dev->video_input);
1989
1990         }
1991         if (fh->radio) {
1992                 cx231xx_videodbg("video_open: setting radio device\n");
1993
1994                 /* cx231xx_start_radio(dev); */
1995
1996                 call_all(dev, tuner, s_radio);
1997         }
1998
1999         dev->users++;
2000
2001         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2002                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2003                                             NULL, &dev->video_mode.slock,
2004                                             fh->type, V4L2_FIELD_INTERLACED,
2005                                             sizeof(struct cx231xx_buffer), fh);
2006         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2007                 /* Set the required alternate setting  VBI interface works in
2008                    Bulk mode only */
2009                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2010
2011                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2012                                             NULL, &dev->vbi_mode.slock,
2013                                             fh->type, V4L2_FIELD_SEQ_TB,
2014                                             sizeof(struct cx231xx_buffer), fh);
2015         }
2016
2017         mutex_unlock(&dev->lock);
2018
2019         return errCode;
2020 }
2021
2022 /*
2023  * cx231xx_realease_resources()
2024  * unregisters the v4l2,i2c and usb devices
2025  * called when the device gets disconected or at module unload
2026 */
2027 void cx231xx_release_analog_resources(struct cx231xx *dev)
2028 {
2029
2030         /*FIXME: I2C IR should be disconnected */
2031
2032         if (dev->radio_dev) {
2033                 if (video_is_registered(dev->radio_dev))
2034                         video_unregister_device(dev->radio_dev);
2035                 else
2036                         video_device_release(dev->radio_dev);
2037                 dev->radio_dev = NULL;
2038         }
2039         if (dev->vbi_dev) {
2040                 cx231xx_info("V4L2 device %s deregistered\n",
2041                              video_device_node_name(dev->vbi_dev));
2042                 if (video_is_registered(dev->vbi_dev))
2043                         video_unregister_device(dev->vbi_dev);
2044                 else
2045                         video_device_release(dev->vbi_dev);
2046                 dev->vbi_dev = NULL;
2047         }
2048         if (dev->vdev) {
2049                 cx231xx_info("V4L2 device %s deregistered\n",
2050                              video_device_node_name(dev->vdev));
2051                 if (video_is_registered(dev->vdev))
2052                         video_unregister_device(dev->vdev);
2053                 else
2054                         video_device_release(dev->vdev);
2055                 dev->vdev = NULL;
2056         }
2057 }
2058
2059 /*
2060  * cx231xx_v4l2_close()
2061  * stops streaming and deallocates all resources allocated by the v4l2
2062  * calls and ioctls
2063  */
2064 static int cx231xx_v4l2_close(struct file *filp)
2065 {
2066         struct cx231xx_fh *fh = filp->private_data;
2067         struct cx231xx *dev = fh->dev;
2068
2069         cx231xx_videodbg("users=%d\n", dev->users);
2070
2071         mutex_lock(&dev->lock);
2072
2073         if (res_check(fh))
2074                 res_free(fh);
2075
2076         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2077                 videobuf_stop(&fh->vb_vidq);
2078                 videobuf_mmap_free(&fh->vb_vidq);
2079
2080                 /* the device is already disconnect,
2081                    free the remaining resources */
2082                 if (dev->state & DEV_DISCONNECTED) {
2083                         cx231xx_release_resources(dev);
2084                         mutex_unlock(&dev->lock);
2085                         kfree(dev);
2086                         return 0;
2087                 }
2088
2089                 /* do this before setting alternate! */
2090                 cx231xx_uninit_vbi_isoc(dev);
2091
2092                 /* set alternate 0 */
2093                 if (!dev->vbi_or_sliced_cc_mode)
2094                         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2095                 else
2096                         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2097
2098                 kfree(fh);
2099                 dev->users--;
2100                 wake_up_interruptible_nr(&dev->open, 1);
2101                 mutex_unlock(&dev->lock);
2102                 return 0;
2103         }
2104
2105         if (dev->users == 1) {
2106                 videobuf_stop(&fh->vb_vidq);
2107                 videobuf_mmap_free(&fh->vb_vidq);
2108
2109                 /* the device is already disconnect,
2110                    free the remaining resources */
2111                 if (dev->state & DEV_DISCONNECTED) {
2112                         cx231xx_release_resources(dev);
2113                         mutex_unlock(&dev->lock);
2114                         kfree(dev);
2115                         return 0;
2116                 }
2117
2118                 /* Save some power by putting tuner to sleep */
2119                 call_all(dev, core, s_power, 0);
2120
2121                 /* do this before setting alternate! */
2122                 cx231xx_uninit_isoc(dev);
2123                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2124
2125                 /* set alternate 0 */
2126                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2127         }
2128         kfree(fh);
2129         dev->users--;
2130         wake_up_interruptible_nr(&dev->open, 1);
2131         mutex_unlock(&dev->lock);
2132         return 0;
2133 }
2134
2135 /*
2136  * cx231xx_v4l2_read()
2137  * will allocate buffers when called for the first time
2138  */
2139 static ssize_t
2140 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2141                   loff_t *pos)
2142 {
2143         struct cx231xx_fh *fh = filp->private_data;
2144         struct cx231xx *dev = fh->dev;
2145         int rc;
2146
2147         rc = check_dev(dev);
2148         if (rc < 0)
2149                 return rc;
2150
2151         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2152             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2153                 mutex_lock(&dev->lock);
2154                 rc = res_get(fh);
2155                 mutex_unlock(&dev->lock);
2156
2157                 if (unlikely(rc < 0))
2158                         return rc;
2159
2160                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2161                                             filp->f_flags & O_NONBLOCK);
2162         }
2163         return 0;
2164 }
2165
2166 /*
2167  * cx231xx_v4l2_poll()
2168  * will allocate buffers when called for the first time
2169  */
2170 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2171 {
2172         struct cx231xx_fh *fh = filp->private_data;
2173         struct cx231xx *dev = fh->dev;
2174         int rc;
2175
2176         rc = check_dev(dev);
2177         if (rc < 0)
2178                 return rc;
2179
2180         mutex_lock(&dev->lock);
2181         rc = res_get(fh);
2182         mutex_unlock(&dev->lock);
2183
2184         if (unlikely(rc < 0))
2185                 return POLLERR;
2186
2187         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2188             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2189                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2190         else
2191                 return POLLERR;
2192 }
2193
2194 /*
2195  * cx231xx_v4l2_mmap()
2196  */
2197 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2198 {
2199         struct cx231xx_fh *fh = filp->private_data;
2200         struct cx231xx *dev = fh->dev;
2201         int rc;
2202
2203         rc = check_dev(dev);
2204         if (rc < 0)
2205                 return rc;
2206
2207         mutex_lock(&dev->lock);
2208         rc = res_get(fh);
2209         mutex_unlock(&dev->lock);
2210
2211         if (unlikely(rc < 0))
2212                 return rc;
2213
2214         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2215
2216         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2217                          (unsigned long)vma->vm_start,
2218                          (unsigned long)vma->vm_end -
2219                          (unsigned long)vma->vm_start, rc);
2220
2221         return rc;
2222 }
2223
2224 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2225         .owner   = THIS_MODULE,
2226         .open    = cx231xx_v4l2_open,
2227         .release = cx231xx_v4l2_close,
2228         .read    = cx231xx_v4l2_read,
2229         .poll    = cx231xx_v4l2_poll,
2230         .mmap    = cx231xx_v4l2_mmap,
2231         .ioctl   = video_ioctl2,
2232 };
2233
2234 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2235         .vidioc_querycap               = vidioc_querycap,
2236         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2237         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2238         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2239         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2240         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2241         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2242         .vidioc_s_fmt_vbi_cap          = vidioc_try_fmt_vbi_cap,
2243         .vidioc_g_audio                =  vidioc_g_audio,
2244         .vidioc_s_audio                = vidioc_s_audio,
2245         .vidioc_cropcap                = vidioc_cropcap,
2246         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2247         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2248         .vidioc_reqbufs                = vidioc_reqbufs,
2249         .vidioc_querybuf               = vidioc_querybuf,
2250         .vidioc_qbuf                   = vidioc_qbuf,
2251         .vidioc_dqbuf                  = vidioc_dqbuf,
2252         .vidioc_s_std                  = vidioc_s_std,
2253         .vidioc_g_std                  = vidioc_g_std,
2254         .vidioc_enum_input             = vidioc_enum_input,
2255         .vidioc_g_input                = vidioc_g_input,
2256         .vidioc_s_input                = vidioc_s_input,
2257         .vidioc_queryctrl              = vidioc_queryctrl,
2258         .vidioc_g_ctrl                 = vidioc_g_ctrl,
2259         .vidioc_s_ctrl                 = vidioc_s_ctrl,
2260         .vidioc_streamon               = vidioc_streamon,
2261         .vidioc_streamoff              = vidioc_streamoff,
2262         .vidioc_g_tuner                = vidioc_g_tuner,
2263         .vidioc_s_tuner                = vidioc_s_tuner,
2264         .vidioc_g_frequency            = vidioc_g_frequency,
2265         .vidioc_s_frequency            = vidioc_s_frequency,
2266 #ifdef CONFIG_VIDEO_ADV_DEBUG
2267         .vidioc_g_register             = vidioc_g_register,
2268         .vidioc_s_register             = vidioc_s_register,
2269 #endif
2270 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2271         .vidiocgmbuf                   = vidiocgmbuf,
2272 #endif
2273 };
2274
2275 static struct video_device cx231xx_vbi_template;
2276
2277 static const struct video_device cx231xx_video_template = {
2278         .fops         = &cx231xx_v4l_fops,
2279         .release      = video_device_release,
2280         .ioctl_ops    = &video_ioctl_ops,
2281         .tvnorms      = V4L2_STD_ALL,
2282         .current_norm = V4L2_STD_PAL,
2283 };
2284
2285 static const struct v4l2_file_operations radio_fops = {
2286         .owner   = THIS_MODULE,
2287         .open   = cx231xx_v4l2_open,
2288         .release = cx231xx_v4l2_close,
2289         .ioctl   = video_ioctl2,
2290 };
2291
2292 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2293         .vidioc_querycap    = radio_querycap,
2294         .vidioc_g_tuner     = radio_g_tuner,
2295         .vidioc_enum_input  = radio_enum_input,
2296         .vidioc_g_audio     = radio_g_audio,
2297         .vidioc_s_tuner     = radio_s_tuner,
2298         .vidioc_s_audio     = radio_s_audio,
2299         .vidioc_s_input     = radio_s_input,
2300         .vidioc_queryctrl   = radio_queryctrl,
2301         .vidioc_g_ctrl      = vidioc_g_ctrl,
2302         .vidioc_s_ctrl      = vidioc_s_ctrl,
2303         .vidioc_g_frequency = vidioc_g_frequency,
2304         .vidioc_s_frequency = vidioc_s_frequency,
2305 #ifdef CONFIG_VIDEO_ADV_DEBUG
2306         .vidioc_g_register  = vidioc_g_register,
2307         .vidioc_s_register  = vidioc_s_register,
2308 #endif
2309 };
2310
2311 static struct video_device cx231xx_radio_template = {
2312         .name      = "cx231xx-radio",
2313         .fops      = &radio_fops,
2314         .ioctl_ops = &radio_ioctl_ops,
2315 };
2316
2317 /******************************** usb interface ******************************/
2318
2319 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2320                 const struct video_device
2321                 *template, const char *type_name)
2322 {
2323         struct video_device *vfd;
2324
2325         vfd = video_device_alloc();
2326         if (NULL == vfd)
2327                 return NULL;
2328
2329         *vfd = *template;
2330         vfd->v4l2_dev = &dev->v4l2_dev;
2331         vfd->release = video_device_release;
2332         vfd->debug = video_debug;
2333
2334         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2335
2336         video_set_drvdata(vfd, dev);
2337         return vfd;
2338 }
2339
2340 int cx231xx_register_analog_devices(struct cx231xx *dev)
2341 {
2342         int ret;
2343
2344         cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2345                      dev->name,
2346                      (CX231XX_VERSION_CODE >> 16) & 0xff,
2347                      (CX231XX_VERSION_CODE >> 8) & 0xff,
2348                      CX231XX_VERSION_CODE & 0xff);
2349
2350         /* set default norm */
2351         /*dev->norm = cx231xx_video_template.current_norm; */
2352         dev->width = norm_maxw(dev);
2353         dev->height = norm_maxh(dev);
2354         dev->interlaced = 0;
2355         dev->hscale = 0;
2356         dev->vscale = 0;
2357
2358         /* Analog specific initialization */
2359         dev->format = &format[0];
2360         /* video_mux(dev, dev->video_input); */
2361
2362         /* Audio defaults */
2363         dev->mute = 1;
2364         dev->volume = 0x1f;
2365
2366         /* enable vbi capturing */
2367         /* write code here...  */
2368
2369         /* allocate and fill video video_device struct */
2370         dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2371         if (!dev->vdev) {
2372                 cx231xx_errdev("cannot allocate video_device.\n");
2373                 return -ENODEV;
2374         }
2375
2376         /* register v4l2 video video_device */
2377         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2378                                     video_nr[dev->devno]);
2379         if (ret) {
2380                 cx231xx_errdev("unable to register video device (error=%i).\n",
2381                                ret);
2382                 return ret;
2383         }
2384
2385         cx231xx_info("%s/0: registered device %s [v4l2]\n",
2386                      dev->name, video_device_node_name(dev->vdev));
2387
2388         /* Initialize VBI template */
2389         memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2390                sizeof(cx231xx_vbi_template));
2391         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2392
2393         /* Allocate and fill vbi video_device struct */
2394         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2395
2396         /* register v4l2 vbi video_device */
2397         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2398                                     vbi_nr[dev->devno]);
2399         if (ret < 0) {
2400                 cx231xx_errdev("unable to register vbi device\n");
2401                 return ret;
2402         }
2403
2404         cx231xx_info("%s/0: registered device %s\n",
2405                      dev->name, video_device_node_name(dev->vbi_dev));
2406
2407         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2408                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2409                                                    "radio");
2410                 if (!dev->radio_dev) {
2411                         cx231xx_errdev("cannot allocate video_device.\n");
2412                         return -ENODEV;
2413                 }
2414                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2415                                             radio_nr[dev->devno]);
2416                 if (ret < 0) {
2417                         cx231xx_errdev("can't register radio device\n");
2418                         return ret;
2419                 }
2420                 cx231xx_info("Registered radio device as %s\n",
2421                              video_device_node_name(dev->radio_dev));
2422         }
2423
2424         cx231xx_info("V4L2 device registered as %s and %s\n",
2425                      video_device_node_name(dev->vdev),
2426                      video_device_node_name(dev->vbi_dev));
2427
2428         return 0;
2429 }