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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         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_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         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_INT_S_VIDEO_ROUTING,
 834                                  &route);
 835
 836         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 837
 838         cx231xx_info("video_mux : %d\n", index);
 839
 840         /* do mode control overrides if required */
 841         cx231xx_do_mode_ctrl_overrides(dev);
 842 }
 843
 844 /* Usage lock check functions */
 845 static int res_get(struct cx231xx_fh *fh)
 846 {
 847         struct cx231xx *dev = fh->dev;
 848         int rc = 0;
 849
 850         /* This instance already has stream_on */
 851         if (fh->stream_on)
 852                 return rc;
 853
 854         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 855                 if (dev->stream_on)
 856                         return -EBUSY;
 857                 dev->stream_on = 1;
 858         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 859                 if (dev->vbi_stream_on)
 860                         return -EBUSY;
 861                 dev->vbi_stream_on = 1;
 862         } else
 863                 return -EINVAL;
 864
 865         fh->stream_on = 1;
 866
 867         return rc;
 868 }
 869
 870 static int res_check(struct cx231xx_fh *fh)
 871 {
 872         return fh->stream_on;
 873 }
 874
 875 static void res_free(struct cx231xx_fh *fh)
 876 {
 877         struct cx231xx *dev = fh->dev;
 878
 879         fh->stream_on = 0;
 880
 881         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 882                 dev->stream_on = 0;
 883         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 884                 dev->vbi_stream_on = 0;
 885 }
 886
 887 static int check_dev(struct cx231xx *dev)
 888 {
 889         if (dev->state & DEV_DISCONNECTED) {
 890                 cx231xx_errdev("v4l2 ioctl: device not present\n");
 891                 return -ENODEV;
 892         }
 893
 894         if (dev->state & DEV_MISCONFIGURED) {
 895                 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
 896                                "close and open it again\n");
 897                 return -EIO;
 898         }
 899         return 0;
 900 }
 901
 902 void get_scale(struct cx231xx *dev,
 903                unsigned int width, unsigned int height,
 904                unsigned int *hscale, unsigned int *vscale)
 905 {
 906         unsigned int maxw = norm_maxw(dev);
 907         unsigned int maxh = norm_maxh(dev);
 908
 909         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 910         if (*hscale >= 0x4000)
 911                 *hscale = 0x3fff;
 912
 913         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 914         if (*vscale >= 0x4000)
 915                 *vscale = 0x3fff;
 916
 917         dev->hscale = *hscale;
 918         dev->vscale = *vscale;
 919
 920 }
 921
 922 /* ------------------------------------------------------------------
 923         IOCTL vidioc handling
 924    ------------------------------------------------------------------*/
 925
 926 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 927                                 struct v4l2_format *f)
 928 {
 929         struct cx231xx_fh *fh = priv;
 930         struct cx231xx *dev = fh->dev;
 931
 932         mutex_lock(&dev->lock);
 933
 934         f->fmt.pix.width = dev->width;
 935         f->fmt.pix.height = dev->height;
 936         f->fmt.pix.pixelformat = dev->format->fourcc;;
 937         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;;
 938         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 939         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 940
 941         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 942
 943         mutex_unlock(&dev->lock);
 944
 945         return 0;
 946 }
 947
 948 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 949 {
 950         unsigned int i;
 951
 952         for (i = 0; i < ARRAY_SIZE(format); i++)
 953                 if (format[i].fourcc == fourcc)
 954                         return &format[i];
 955
 956         return NULL;
 957 }
 958
 959 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 960                                   struct v4l2_format *f)
 961 {
 962         struct cx231xx_fh *fh = priv;
 963         struct cx231xx *dev = fh->dev;
 964         int width = f->fmt.pix.width;
 965         int height = f->fmt.pix.height;
 966         unsigned int maxw = norm_maxw(dev);
 967         unsigned int maxh = norm_maxh(dev);
 968         unsigned int hscale, vscale;
 969         struct cx231xx_fmt *fmt;
 970
 971         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 972         if (!fmt) {
 973                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 974                                  f->fmt.pix.pixelformat);
 975                 return -EINVAL;
 976         }
 977
 978         /* width must even because of the YUYV format
 979            height must be even because of interlacing */
 980         height &= 0xfffe;
 981         width &= 0xfffe;
 982
 983         if (unlikely(height < 32))
 984                 height = 32;
 985         if (unlikely(height > maxh))
 986                 height = maxh;
 987         if (unlikely(width < 48))
 988                 width = 48;
 989         if (unlikely(width > maxw))
 990                 width = maxw;
 991
 992         get_scale(dev, width, height, &hscale, &vscale);
 993
 994         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 995         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 996
 997         f->fmt.pix.width = width;
 998         f->fmt.pix.height = height;
 999         f->fmt.pix.pixelformat = fmt->fourcc;
1000         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
1001         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1002         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1003         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1004
1005         return 0;
1006 }
1007
1008 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1009                                 struct v4l2_format *f)
1010 {
1011         struct cx231xx_fh *fh = priv;
1012         struct cx231xx *dev = fh->dev;
1013         int rc;
1014         struct cx231xx_fmt *fmt;
1015
1016         rc = check_dev(dev);
1017         if (rc < 0)
1018                 return rc;
1019
1020         mutex_lock(&dev->lock);
1021
1022         vidioc_try_fmt_vid_cap(file, priv, f);
1023
1024         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1025         if (!fmt) {
1026                 rc = -EINVAL;
1027                 goto out;
1028         }
1029
1030         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1031                 cx231xx_errdev("%s queue busy\n", __func__);
1032                 rc = -EBUSY;
1033                 goto out;
1034         }
1035
1036         if (dev->stream_on && !fh->stream_on) {
1037                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1038                 rc = -EBUSY;
1039                 goto out;
1040         }
1041
1042         /* set new image size */
1043         dev->width = f->fmt.pix.width;
1044         dev->height = f->fmt.pix.height;
1045         dev->format = fmt;
1046         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1047
1048         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_FMT, f);
1049
1050         /* Set the correct alternate setting for this resolution */
1051         cx231xx_resolution_set(dev);
1052
1053 out:
1054         mutex_unlock(&dev->lock);
1055         return rc;
1056 }
1057
1058 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1059 {
1060         struct cx231xx_fh *fh = priv;
1061         struct cx231xx *dev = fh->dev;
1062
1063         *id = dev->norm;
1064         return 0;
1065 }
1066
1067 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
1068 {
1069         struct cx231xx_fh *fh = priv;
1070         struct cx231xx *dev = fh->dev;
1071         struct v4l2_format f;
1072         int rc;
1073
1074         rc = check_dev(dev);
1075         if (rc < 0)
1076                 return rc;
1077
1078         cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1079
1080         mutex_lock(&dev->lock);
1081         dev->norm = *norm;
1082
1083         /* Adjusts width/height, if needed */
1084         f.fmt.pix.width = dev->width;
1085         f.fmt.pix.height = dev->height;
1086         vidioc_try_fmt_vid_cap(file, priv, &f);
1087
1088         /* set new image size */
1089         dev->width = f.fmt.pix.width;
1090         dev->height = f.fmt.pix.height;
1091         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1092
1093         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_STD, &dev->norm);
1094
1095         mutex_unlock(&dev->lock);
1096
1097         cx231xx_resolution_set(dev);
1098
1099         /* do mode control overrides */
1100         cx231xx_do_mode_ctrl_overrides(dev);
1101
1102         return 0;
1103 }
1104
1105 static const char *iname[] = {
1106         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1107         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1108         [CX231XX_VMUX_TELEVISION] = "Television",
1109         [CX231XX_VMUX_CABLE]      = "Cable TV",
1110         [CX231XX_VMUX_DVB]        = "DVB",
1111         [CX231XX_VMUX_DEBUG]      = "for debug only",
1112 };
1113
1114 static int vidioc_enum_input(struct file *file, void *priv,
1115                              struct v4l2_input *i)
1116 {
1117         struct cx231xx_fh *fh = priv;
1118         struct cx231xx *dev = fh->dev;
1119         unsigned int n;
1120
1121         n = i->index;
1122         if (n >= MAX_CX231XX_INPUT)
1123                 return -EINVAL;
1124         if (0 == INPUT(n)->type)
1125                 return -EINVAL;
1126
1127         i->index = n;
1128         i->type = V4L2_INPUT_TYPE_CAMERA;
1129
1130         strcpy(i->name, iname[INPUT(n)->type]);
1131
1132         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1133             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1134                 i->type = V4L2_INPUT_TYPE_TUNER;
1135
1136         i->std = dev->vdev->tvnorms;
1137
1138         return 0;
1139 }
1140
1141 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1142 {
1143         struct cx231xx_fh *fh = priv;
1144         struct cx231xx *dev = fh->dev;
1145
1146         *i = dev->video_input;
1147
1148         return 0;
1149 }
1150
1151 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1152 {
1153         struct cx231xx_fh *fh = priv;
1154         struct cx231xx *dev = fh->dev;
1155         int rc;
1156
1157         rc = check_dev(dev);
1158         if (rc < 0)
1159                 return rc;
1160
1161         if (i >= MAX_CX231XX_INPUT)
1162                 return -EINVAL;
1163         if (0 == INPUT(i)->type)
1164                 return -EINVAL;
1165
1166         mutex_lock(&dev->lock);
1167
1168         video_mux(dev, i);
1169
1170         mutex_unlock(&dev->lock);
1171         return 0;
1172 }
1173
1174 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1175 {
1176         struct cx231xx_fh *fh = priv;
1177         struct cx231xx *dev = fh->dev;
1178
1179         switch (a->index) {
1180         case CX231XX_AMUX_VIDEO:
1181                 strcpy(a->name, "Television");
1182                 break;
1183         case CX231XX_AMUX_LINE_IN:
1184                 strcpy(a->name, "Line In");
1185                 break;
1186         default:
1187                 return -EINVAL;
1188         }
1189
1190         a->index = dev->ctl_ainput;
1191         a->capability = V4L2_AUDCAP_STEREO;
1192
1193         return 0;
1194 }
1195
1196 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1197 {
1198         struct cx231xx_fh *fh = priv;
1199         struct cx231xx *dev = fh->dev;
1200         int status = 0;
1201
1202         /* Doesn't allow manual routing */
1203         if (a->index != dev->ctl_ainput)
1204                 return -EINVAL;
1205
1206         dev->ctl_ainput = INPUT(a->index)->amux;
1207         status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1208
1209         return status;
1210 }
1211
1212 static int vidioc_queryctrl(struct file *file, void *priv,
1213                             struct v4l2_queryctrl *qc)
1214 {
1215         struct cx231xx_fh *fh = priv;
1216         struct cx231xx *dev = fh->dev;
1217         int id = qc->id;
1218         int i;
1219         int rc;
1220
1221         rc = check_dev(dev);
1222         if (rc < 0)
1223                 return rc;
1224
1225         qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1226         if (unlikely(qc->id == 0))
1227                 return -EINVAL;
1228
1229         memset(qc, 0, sizeof(*qc));
1230
1231         qc->id = id;
1232
1233         if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1234                 return -EINVAL;
1235
1236         for (i = 0; i < CX231XX_CTLS; i++)
1237                 if (cx231xx_ctls[i].v.id == qc->id)
1238                         break;
1239
1240         if (i == CX231XX_CTLS) {
1241                 *qc = no_ctl;
1242                 return 0;
1243         }
1244         *qc = cx231xx_ctls[i].v;
1245
1246         mutex_lock(&dev->lock);
1247         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_QUERYCTRL, qc);
1248         mutex_unlock(&dev->lock);
1249
1250         if (qc->type)
1251                 return 0;
1252         else
1253                 return -EINVAL;
1254 }
1255
1256 static int vidioc_g_ctrl(struct file *file, void *priv,
1257                          struct v4l2_control *ctrl)
1258 {
1259         struct cx231xx_fh *fh = priv;
1260         struct cx231xx *dev = fh->dev;
1261         int rc;
1262
1263         rc = check_dev(dev);
1264         if (rc < 0)
1265                 return rc;
1266
1267         mutex_lock(&dev->lock);
1268
1269         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_CTRL, ctrl);
1270
1271         mutex_unlock(&dev->lock);
1272         return rc;
1273 }
1274
1275 static int vidioc_s_ctrl(struct file *file, void *priv,
1276                          struct v4l2_control *ctrl)
1277 {
1278         struct cx231xx_fh *fh = priv;
1279         struct cx231xx *dev = fh->dev;
1280         int rc;
1281
1282         rc = check_dev(dev);
1283         if (rc < 0)
1284                 return rc;
1285
1286         mutex_lock(&dev->lock);
1287
1288         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_CTRL, ctrl);
1289
1290         mutex_unlock(&dev->lock);
1291         return rc;
1292 }
1293
1294 static int vidioc_g_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
1307         strcpy(t->name, "Tuner");
1308
1309         t->type = V4L2_TUNER_ANALOG_TV;
1310         t->capability = V4L2_TUNER_CAP_NORM;
1311         t->rangehigh = 0xffffffffUL;
1312         t->signal = 0xffff;     /* LOCKED */
1313
1314         return 0;
1315 }
1316
1317 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1318 {
1319         struct cx231xx_fh *fh = priv;
1320         struct cx231xx *dev = fh->dev;
1321         int rc;
1322
1323         rc = check_dev(dev);
1324         if (rc < 0)
1325                 return rc;
1326
1327         if (0 != t->index)
1328                 return -EINVAL;
1329 #if 0
1330         mutex_lock(&dev->lock);
1331
1332         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_TUNER, t);
1333
1334         mutex_unlock(&dev->lock);
1335 #endif
1336         return 0;
1337 }
1338
1339 static int vidioc_g_frequency(struct file *file, void *priv,
1340                               struct v4l2_frequency *f)
1341 {
1342         struct cx231xx_fh *fh = priv;
1343         struct cx231xx *dev = fh->dev;
1344
1345         mutex_lock(&dev->lock);
1346         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1347         f->frequency = dev->ctl_freq;
1348
1349         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_G_FREQUENCY, f);
1350
1351         mutex_unlock(&dev->lock);
1352
1353         return 0;
1354 }
1355
1356 static int vidioc_s_frequency(struct file *file, void *priv,
1357                               struct v4l2_frequency *f)
1358 {
1359         struct cx231xx_fh *fh = priv;
1360         struct cx231xx *dev = fh->dev;
1361         int rc;
1362
1363         rc = check_dev(dev);
1364         if (rc < 0)
1365                 return rc;
1366
1367         if (0 != f->tuner)
1368                 return -EINVAL;
1369
1370         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1371                 return -EINVAL;
1372         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1373                 return -EINVAL;
1374
1375         /* set pre channel change settings in DIF first */
1376         rc = cx231xx_tuner_pre_channel_change(dev);
1377
1378         mutex_lock(&dev->lock);
1379
1380         dev->ctl_freq = f->frequency;
1381
1382         if (dev->tuner_type == TUNER_XC5000) {
1383                 if (dev->cx231xx_set_analog_freq != NULL)
1384                         dev->cx231xx_set_analog_freq(dev, f->frequency);
1385         } else {
1386                 cx231xx_i2c_call_clients(&dev->i2c_bus[1],
1387                                          VIDIOC_S_FREQUENCY, f);
1388         }
1389
1390         mutex_unlock(&dev->lock);
1391
1392         /* set post channel change settings in DIF first */
1393         rc = cx231xx_tuner_post_channel_change(dev);
1394
1395         cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1396
1397         return rc;
1398 }
1399
1400 #ifdef CONFIG_VIDEO_ADV_DEBUG
1401
1402 /*
1403   -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1404                                 chip=<chip>[,min=<addr>,max=<addr>]
1405                      dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1406   -r, --set-register=type=<host/i2cdrv/i2caddr>,
1407                                 chip=<chip>,reg=<addr>,val=<val>
1408                      set the register [VIDIOC_DBG_S_REGISTER]
1409
1410   if type == host, then <chip> is the hosts chip ID (default 0)
1411   if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1412   if type == i2caddr, then <chip> is the 7-bit I2C address
1413 */
1414
1415 static int vidioc_g_register(struct file *file, void *priv,
1416                              struct v4l2_dbg_register *reg)
1417 {
1418         struct cx231xx_fh *fh = priv;
1419         struct cx231xx *dev = fh->dev;
1420         int ret = 0;
1421         u8 value[4] = { 0, 0, 0, 0 };
1422         u32 data = 0;
1423
1424         switch (reg->match.type) {
1425         case V4L2_CHIP_MATCH_HOST:
1426                 switch (reg->match.addr) {
1427                 case 0: /* Cx231xx - internal registers */
1428                         ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1429                                                   (u16)reg->reg, value, 4);
1430                         reg->val = value[0] | value[1] << 8 |
1431                                    value[2] << 16 | value[3] << 24;
1432                         break;
1433                 case 1: /* Colibri - read byte */
1434                         ret = cx231xx_read_i2c_data(dev, Colibri_DEVICE_ADDRESS,
1435                                                   (u16)reg->reg, 2, &data, 1);
1436                         reg->val = le32_to_cpu(data & 0xff);
1437                         break;
1438                 case 14:        /* Colibri - read dword */
1439                         ret = cx231xx_read_i2c_data(dev, Colibri_DEVICE_ADDRESS,
1440                                                   (u16)reg->reg, 2, &data, 4);
1441                         reg->val = le32_to_cpu(data);
1442                         break;
1443                 case 2: /* Hammerhead - read byte */
1444                         ret = cx231xx_read_i2c_data(dev, HAMMERHEAD_I2C_ADDRESS,
1445                                                   (u16)reg->reg, 2, &data, 1);
1446                         reg->val = le32_to_cpu(data & 0xff);
1447                         break;
1448                 case 24:        /* Hammerhead - read dword */
1449                         ret = cx231xx_read_i2c_data(dev, HAMMERHEAD_I2C_ADDRESS,
1450                                                   (u16)reg->reg, 2, &data, 4);
1451                         reg->val = le32_to_cpu(data);
1452                         break;
1453                 case 3: /* flatiron - read byte */
1454                         ret = cx231xx_read_i2c_data(dev,
1455                                                     Flatrion_DEVICE_ADDRESS,
1456                                                     (u16)reg->reg, 1,
1457                                                     &data, 1);
1458                         reg->val = le32_to_cpu(data & 0xff);
1459                         break;
1460                 case 34:        /* flatiron - read dword */
1461                         ret =
1462                             cx231xx_read_i2c_data(dev, Flatrion_DEVICE_ADDRESS,
1463                                                   (u16)reg->reg, 1, &data, 4);
1464                         reg->val = le32_to_cpu(data);
1465                         break;
1466                 }
1467                 return ret < 0 ? ret : 0;
1468
1469         case V4L2_CHIP_MATCH_I2C_DRIVER:
1470                 cx231xx_i2c_call_clients(&dev->i2c_bus[0],
1471                                          VIDIOC_DBG_G_REGISTER, reg);
1472                 return 0;
1473         case V4L2_CHIP_MATCH_I2C_ADDR:
1474                 /* Not supported yet */
1475                 return -EINVAL;
1476         default:
1477                 if (!v4l2_chip_match_host(&reg->match))
1478                         return -EINVAL;
1479         }
1480
1481         mutex_lock(&dev->lock);
1482         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_DBG_G_REGISTER, reg);
1483         mutex_unlock(&dev->lock);
1484
1485         return ret;
1486 }
1487
1488 static int vidioc_s_register(struct file *file, void *priv,
1489                              struct v4l2_dbg_register *reg)
1490 {
1491         struct cx231xx_fh *fh = priv;
1492         struct cx231xx *dev = fh->dev;
1493         int ret = 0;
1494         __le64 buf;
1495         u32 value;
1496         u8 data[4] = { 0, 0, 0, 0 };
1497
1498         buf = cpu_to_le64(reg->val);
1499
1500         switch (reg->match.type) {
1501         case V4L2_CHIP_MATCH_HOST:
1502                 {
1503                         value = (u32) buf & 0xffffffff;
1504
1505                         switch (reg->match.addr) {
1506                         case 0: /* cx231xx internal registers */
1507                                 data[0] = (u8) value;
1508                                 data[1] = (u8) (value >> 8);
1509                                 data[2] = (u8) (value >> 16);
1510                                 data[3] = (u8) (value >> 24);
1511                                 ret = cx231xx_write_ctrl_reg(dev,
1512                                                            VRT_SET_REGISTER,
1513                                                            (u16)reg->reg, data,
1514                                                            4);
1515                                 break;
1516                         case 1: /* Colibri - read byte */
1517                                 ret = cx231xx_write_i2c_data(dev,
1518                                                         Colibri_DEVICE_ADDRESS,
1519                                                         (u16)reg->reg, 2,
1520                                                         value, 1);
1521                                 break;
1522                         case 14:        /* Colibri - read dword */
1523                                 ret = cx231xx_write_i2c_data(dev,
1524                                                         Colibri_DEVICE_ADDRESS,
1525                                                         (u16)reg->reg, 2,
1526                                                         value, 4);
1527                                 break;
1528                         case 2: /* Hammerhead - read byte */
1529                                 ret =
1530                                     cx231xx_write_i2c_data(dev,
1531                                                         HAMMERHEAD_I2C_ADDRESS,
1532                                                         (u16)reg->reg, 2,
1533                                                         value, 1);
1534                                 break;
1535                         case 24:        /* Hammerhead - read dword */
1536                                 ret =
1537                                     cx231xx_write_i2c_data(dev,
1538                                                         HAMMERHEAD_I2C_ADDRESS,
1539                                                         (u16)reg->reg, 2,
1540                                                         value, 4);
1541                                 break;
1542                         case 3: /* flatiron - read byte */
1543                                 ret =
1544                                     cx231xx_write_i2c_data(dev,
1545                                                         Flatrion_DEVICE_ADDRESS,
1546                                                         (u16)reg->reg, 1,
1547                                                         value, 1);
1548                                 break;
1549                         case 34:        /* flatiron - read dword */
1550                                 ret =
1551                                     cx231xx_write_i2c_data(dev,
1552                                                         Flatrion_DEVICE_ADDRESS,
1553                                                         (u16)reg->reg, 1,
1554                                                         value, 4);
1555                                 break;
1556                         }
1557                 }
1558                 return ret < 0 ? ret : 0;
1559
1560         default:
1561                 break;
1562         }
1563
1564         mutex_lock(&dev->lock);
1565
1566         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_DBG_S_REGISTER, reg);
1567
1568         mutex_unlock(&dev->lock);
1569
1570         return ret;
1571 }
1572 #endif
1573
1574 static int vidioc_cropcap(struct file *file, void *priv,
1575                           struct v4l2_cropcap *cc)
1576 {
1577         struct cx231xx_fh *fh = priv;
1578         struct cx231xx *dev = fh->dev;
1579
1580         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1581                 return -EINVAL;
1582
1583         cc->bounds.left = 0;
1584         cc->bounds.top = 0;
1585         cc->bounds.width = dev->width;
1586         cc->bounds.height = dev->height;
1587         cc->defrect = cc->bounds;
1588         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1589         cc->pixelaspect.denominator = 59;
1590
1591         return 0;
1592 }
1593
1594 static int vidioc_streamon(struct file *file, void *priv,
1595                            enum v4l2_buf_type type)
1596 {
1597         struct cx231xx_fh *fh = priv;
1598         struct cx231xx *dev = fh->dev;
1599         int rc;
1600
1601         rc = check_dev(dev);
1602         if (rc < 0)
1603                 return rc;
1604
1605         mutex_lock(&dev->lock);
1606         rc = res_get(fh);
1607
1608         if (likely(rc >= 0))
1609                 rc = videobuf_streamon(&fh->vb_vidq);
1610
1611         mutex_unlock(&dev->lock);
1612
1613         return rc;
1614 }
1615
1616 static int vidioc_streamoff(struct file *file, void *priv,
1617                             enum v4l2_buf_type type)
1618 {
1619         struct cx231xx_fh *fh = priv;
1620         struct cx231xx *dev = fh->dev;
1621         int rc;
1622
1623         rc = check_dev(dev);
1624         if (rc < 0)
1625                 return rc;
1626
1627         if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1628             (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1629                 return -EINVAL;
1630         if (type != fh->type)
1631                 return -EINVAL;
1632
1633         mutex_lock(&dev->lock);
1634
1635         videobuf_streamoff(&fh->vb_vidq);
1636         res_free(fh);
1637
1638         mutex_unlock(&dev->lock);
1639
1640         return 0;
1641 }
1642
1643 static int vidioc_querycap(struct file *file, void *priv,
1644                            struct v4l2_capability *cap)
1645 {
1646         struct cx231xx_fh *fh = priv;
1647         struct cx231xx *dev = fh->dev;
1648
1649         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1650         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1651         strlcpy(cap->bus_info, dev_name(&dev->udev->dev),
1652                 sizeof(cap->bus_info));
1653
1654         cap->version = CX231XX_VERSION_CODE;
1655
1656         cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1657 #if 0
1658             V4L2_CAP_SLICED_VBI_CAPTURE |
1659 #endif
1660             V4L2_CAP_VIDEO_CAPTURE |
1661             V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1662
1663         if (dev->tuner_type != TUNER_ABSENT)
1664                 cap->capabilities |= V4L2_CAP_TUNER;
1665
1666         return 0;
1667 }
1668
1669 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1670                                    struct v4l2_fmtdesc *f)
1671 {
1672         if (unlikely(f->index >= ARRAY_SIZE(format)))
1673                 return -EINVAL;
1674
1675         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1676         f->pixelformat = format[f->index].fourcc;
1677
1678         return 0;
1679 }
1680
1681 /* Sliced VBI ioctls */
1682 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1683                                        struct v4l2_format *f)
1684 {
1685         struct cx231xx_fh *fh = priv;
1686         struct cx231xx *dev = fh->dev;
1687         int rc;
1688
1689         rc = check_dev(dev);
1690         if (rc < 0)
1691                 return rc;
1692
1693         mutex_lock(&dev->lock);
1694
1695         f->fmt.sliced.service_set = 0;
1696
1697         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_FMT, f);
1698
1699         if (f->fmt.sliced.service_set == 0)
1700                 rc = -EINVAL;
1701
1702         mutex_unlock(&dev->lock);
1703         return rc;
1704 }
1705
1706 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1707                                          struct v4l2_format *f)
1708 {
1709         struct cx231xx_fh *fh = priv;
1710         struct cx231xx *dev = fh->dev;
1711         int rc;
1712
1713         rc = check_dev(dev);
1714         if (rc < 0)
1715                 return rc;
1716
1717         mutex_lock(&dev->lock);
1718         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_FMT, f);
1719         mutex_unlock(&dev->lock);
1720
1721         if (f->fmt.sliced.service_set == 0)
1722                 return -EINVAL;
1723
1724         return 0;
1725 }
1726
1727 /* RAW VBI ioctls */
1728
1729 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1730                                 struct v4l2_format *f)
1731 {
1732         struct cx231xx_fh *fh = priv;
1733         struct cx231xx *dev = fh->dev;
1734
1735         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1736             35468950 : 28636363;
1737         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1738         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1739         f->fmt.vbi.offset = 64 * 4;
1740         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1741             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1742         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1743             PAL_VBI_LINES : NTSC_VBI_LINES;
1744         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1745             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1746         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1747
1748         return 0;
1749
1750 }
1751
1752 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1753                                   struct v4l2_format *f)
1754 {
1755         struct cx231xx_fh *fh = priv;
1756         struct cx231xx *dev = fh->dev;
1757
1758         if (dev->vbi_stream_on && !fh->stream_on) {
1759                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1760                 return -EBUSY;
1761         }
1762
1763         f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1764         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1765             35468950 : 28636363;
1766         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1767         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1768         f->fmt.vbi.offset = 244;
1769         f->fmt.vbi.flags = 0;
1770         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1771             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1772         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1773             PAL_VBI_LINES : NTSC_VBI_LINES;
1774         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1775             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1776         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1777
1778         return 0;
1779
1780 }
1781
1782 static int vidioc_reqbufs(struct file *file, void *priv,
1783                           struct v4l2_requestbuffers *rb)
1784 {
1785         struct cx231xx_fh *fh = priv;
1786         struct cx231xx *dev = fh->dev;
1787         int rc;
1788
1789         rc = check_dev(dev);
1790         if (rc < 0)
1791                 return rc;
1792
1793         return videobuf_reqbufs(&fh->vb_vidq, rb);
1794 }
1795
1796 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1797 {
1798         struct cx231xx_fh *fh = priv;
1799         struct cx231xx *dev = fh->dev;
1800         int rc;
1801
1802         rc = check_dev(dev);
1803         if (rc < 0)
1804                 return rc;
1805
1806         return videobuf_querybuf(&fh->vb_vidq, b);
1807 }
1808
1809 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1810 {
1811         struct cx231xx_fh *fh = priv;
1812         struct cx231xx *dev = fh->dev;
1813         int rc;
1814
1815         rc = check_dev(dev);
1816         if (rc < 0)
1817                 return rc;
1818
1819         return videobuf_qbuf(&fh->vb_vidq, b);
1820 }
1821
1822 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1823 {
1824         struct cx231xx_fh *fh = priv;
1825         struct cx231xx *dev = fh->dev;
1826         int rc;
1827
1828         rc = check_dev(dev);
1829         if (rc < 0)
1830                 return rc;
1831
1832         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1833 }
1834
1835 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1836 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1837 {
1838         struct cx231xx_fh *fh = priv;
1839
1840         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1841 }
1842 #endif
1843
1844 /* ----------------------------------------------------------- */
1845 /* RADIO ESPECIFIC IOCTLS                                      */
1846 /* ----------------------------------------------------------- */
1847
1848 static int radio_querycap(struct file *file, void *priv,
1849                           struct v4l2_capability *cap)
1850 {
1851         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1852
1853         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1854         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1855         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1856
1857         cap->version = CX231XX_VERSION_CODE;
1858         cap->capabilities = V4L2_CAP_TUNER;
1859         return 0;
1860 }
1861
1862 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1863 {
1864         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1865
1866         if (unlikely(t->index > 0))
1867                 return -EINVAL;
1868
1869         strcpy(t->name, "Radio");
1870         t->type = V4L2_TUNER_RADIO;
1871
1872         mutex_lock(&dev->lock);
1873         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_G_TUNER, t);
1874         mutex_unlock(&dev->lock);
1875
1876         return 0;
1877 }
1878
1879 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1880 {
1881         if (i->index != 0)
1882                 return -EINVAL;
1883         strcpy(i->name, "Radio");
1884         i->type = V4L2_INPUT_TYPE_TUNER;
1885
1886         return 0;
1887 }
1888
1889 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1890 {
1891         if (unlikely(a->index))
1892                 return -EINVAL;
1893
1894         strcpy(a->name, "Radio");
1895         return 0;
1896 }
1897
1898 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1899 {
1900         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1901
1902         if (0 != t->index)
1903                 return -EINVAL;
1904
1905         mutex_lock(&dev->lock);
1906         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_TUNER, t);
1907         mutex_unlock(&dev->lock);
1908
1909         return 0;
1910 }
1911
1912 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1913 {
1914         return 0;
1915 }
1916
1917 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1918 {
1919         return 0;
1920 }
1921
1922 static int radio_queryctrl(struct file *file, void *priv,
1923                            struct v4l2_queryctrl *c)
1924 {
1925         int i;
1926
1927         if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1928                 return -EINVAL;
1929         if (c->id == V4L2_CID_AUDIO_MUTE) {
1930                 for (i = 0; i < CX231XX_CTLS; i++)
1931                         if (cx231xx_ctls[i].v.id == c->id)
1932                                 break;
1933                 *c = cx231xx_ctls[i].v;
1934         } else
1935                 *c = no_ctl;
1936         return 0;
1937 }
1938
1939 /*
1940  * cx231xx_v4l2_open()
1941  * inits the device and starts isoc transfer
1942  */
1943 static int cx231xx_v4l2_open(struct file *filp)
1944 {
1945         int minor = video_devdata(filp)->minor;
1946         int errCode = 0, radio = 0;
1947         struct cx231xx *dev = NULL;
1948         struct cx231xx_fh *fh;
1949         enum v4l2_buf_type fh_type = 0;
1950
1951         dev = cx231xx_get_device(minor, &fh_type, &radio);
1952         if (NULL == dev)
1953                 return -ENODEV;
1954
1955         mutex_lock(&dev->lock);
1956
1957         cx231xx_videodbg("open minor=%d type=%s users=%d\n",
1958                          minor, v4l2_type_names[fh_type], dev->users);
1959
1960 #if 0
1961         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1962         if (errCode < 0) {
1963                 cx231xx_errdev
1964                     ("Device locked on digital mode. Can't open analog\n");
1965                 mutex_unlock(&dev->lock);
1966                 return -EBUSY;
1967         }
1968 #endif
1969
1970         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1971         if (!fh) {
1972                 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1973                 mutex_unlock(&dev->lock);
1974                 return -ENOMEM;
1975         }
1976         fh->dev = dev;
1977         fh->radio = radio;
1978         fh->type = fh_type;
1979         filp->private_data = fh;
1980
1981         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1982                 dev->width = norm_maxw(dev);
1983                 dev->height = norm_maxh(dev);
1984                 dev->hscale = 0;
1985                 dev->vscale = 0;
1986
1987                 /* Power up in Analog TV mode */
1988                 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1989
1990 #if 0
1991                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1992 #endif
1993                 cx231xx_resolution_set(dev);
1994
1995                 /* set video alternate setting */
1996                 cx231xx_set_video_alternate(dev);
1997
1998                 /* Needed, since GPIO might have disabled power of
1999                    some i2c device */
2000                 cx231xx_config_i2c(dev);
2001
2002                 /* device needs to be initialized before isoc transfer */
2003                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
2004                 video_mux(dev, dev->video_input);
2005
2006         }
2007         if (fh->radio) {
2008                 cx231xx_videodbg("video_open: setting radio device\n");
2009
2010                 /* cx231xx_start_radio(dev); */
2011
2012                 cx231xx_i2c_call_clients(&dev->i2c_bus[1], AUDC_SET_RADIO,
2013                                          NULL);
2014         }
2015
2016         dev->users++;
2017
2018         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2019                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2020                                             NULL, &dev->video_mode.slock,
2021                                             fh->type, V4L2_FIELD_INTERLACED,
2022                                             sizeof(struct cx231xx_buffer), fh);
2023         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2024                 /* Set the required alternate setting  VBI interface works in
2025                    Bulk mode only */
2026                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2027
2028                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2029                                             NULL, &dev->vbi_mode.slock,
2030                                             fh->type, V4L2_FIELD_SEQ_TB,
2031                                             sizeof(struct cx231xx_buffer), fh);
2032         }
2033
2034         mutex_unlock(&dev->lock);
2035
2036         return errCode;
2037 }
2038
2039 /*
2040  * cx231xx_realease_resources()
2041  * unregisters the v4l2,i2c and usb devices
2042  * called when the device gets disconected or at module unload
2043 */
2044 void cx231xx_release_analog_resources(struct cx231xx *dev)
2045 {
2046
2047         /*FIXME: I2C IR should be disconnected */
2048
2049         if (dev->radio_dev) {
2050                 if (-1 != dev->radio_dev->minor)
2051                         video_unregister_device(dev->radio_dev);
2052                 else
2053                         video_device_release(dev->radio_dev);
2054                 dev->radio_dev = NULL;
2055         }
2056         if (dev->vbi_dev) {
2057                 cx231xx_info("V4L2 device /dev/vbi%d deregistered\n",
2058                              dev->vbi_dev->num);
2059                 if (-1 != dev->vbi_dev->minor)
2060                         video_unregister_device(dev->vbi_dev);
2061                 else
2062                         video_device_release(dev->vbi_dev);
2063                 dev->vbi_dev = NULL;
2064         }
2065         if (dev->vdev) {
2066                 cx231xx_info("V4L2 device /dev/video%d deregistered\n",
2067                              dev->vdev->num);
2068                 if (-1 != dev->vdev->minor)
2069                         video_unregister_device(dev->vdev);
2070                 else
2071                         video_device_release(dev->vdev);
2072                 dev->vdev = NULL;
2073         }
2074 }
2075
2076 /*
2077  * cx231xx_v4l2_close()
2078  * stops streaming and deallocates all resources allocated by the v4l2
2079  * calls and ioctls
2080  */
2081 static int cx231xx_v4l2_close(struct file *filp)
2082 {
2083         struct cx231xx_fh *fh = filp->private_data;
2084         struct cx231xx *dev = fh->dev;
2085
2086         cx231xx_videodbg("users=%d\n", dev->users);
2087
2088         mutex_lock(&dev->lock);
2089
2090         if (res_check(fh))
2091                 res_free(fh);
2092
2093         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2094                 videobuf_stop(&fh->vb_vidq);
2095                 videobuf_mmap_free(&fh->vb_vidq);
2096
2097                 /* the device is already disconnect,
2098                    free the remaining resources */
2099                 if (dev->state & DEV_DISCONNECTED) {
2100                         cx231xx_release_resources(dev);
2101                         mutex_unlock(&dev->lock);
2102                         kfree(dev);
2103                         return 0;
2104                 }
2105
2106                 /* do this before setting alternate! */
2107                 cx231xx_uninit_vbi_isoc(dev);
2108
2109                 /* set alternate 0 */
2110                 if (!dev->vbi_or_sliced_cc_mode)
2111                         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2112                 else
2113                         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2114
2115                 kfree(fh);
2116                 dev->users--;
2117                 wake_up_interruptible_nr(&dev->open, 1);
2118                 mutex_unlock(&dev->lock);
2119                 return 0;
2120         }
2121
2122         if (dev->users == 1) {
2123                 videobuf_stop(&fh->vb_vidq);
2124                 videobuf_mmap_free(&fh->vb_vidq);
2125
2126                 /* the device is already disconnect,
2127                    free the remaining resources */
2128                 if (dev->state & DEV_DISCONNECTED) {
2129                         cx231xx_release_resources(dev);
2130                         mutex_unlock(&dev->lock);
2131                         kfree(dev);
2132                         return 0;
2133                 }
2134
2135                 /* Save some power by putting tuner to sleep */
2136                 cx231xx_i2c_call_clients(&dev->i2c_bus[1], TUNER_SET_STANDBY,
2137                                          NULL);
2138
2139                 /* do this before setting alternate! */
2140                 cx231xx_uninit_isoc(dev);
2141                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2142
2143                 /* set alternate 0 */
2144                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2145         }
2146         kfree(fh);
2147         dev->users--;
2148         wake_up_interruptible_nr(&dev->open, 1);
2149         mutex_unlock(&dev->lock);
2150         return 0;
2151 }
2152
2153 /*
2154  * cx231xx_v4l2_read()
2155  * will allocate buffers when called for the first time
2156  */
2157 static ssize_t
2158 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2159                   loff_t *pos)
2160 {
2161         struct cx231xx_fh *fh = filp->private_data;
2162         struct cx231xx *dev = fh->dev;
2163         int rc;
2164
2165         rc = check_dev(dev);
2166         if (rc < 0)
2167                 return rc;
2168
2169         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2170             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2171                 mutex_lock(&dev->lock);
2172                 rc = res_get(fh);
2173                 mutex_unlock(&dev->lock);
2174
2175                 if (unlikely(rc < 0))
2176                         return rc;
2177
2178                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2179                                             filp->f_flags & O_NONBLOCK);
2180         }
2181         return 0;
2182 }
2183
2184 /*
2185  * cx231xx_v4l2_poll()
2186  * will allocate buffers when called for the first time
2187  */
2188 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2189 {
2190         struct cx231xx_fh *fh = filp->private_data;
2191         struct cx231xx *dev = fh->dev;
2192         int rc;
2193
2194         rc = check_dev(dev);
2195         if (rc < 0)
2196                 return rc;
2197
2198         mutex_lock(&dev->lock);
2199         rc = res_get(fh);
2200         mutex_unlock(&dev->lock);
2201
2202         if (unlikely(rc < 0))
2203                 return POLLERR;
2204
2205         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2206             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2207                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2208         else
2209                 return POLLERR;
2210 }
2211
2212 /*
2213  * cx231xx_v4l2_mmap()
2214  */
2215 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2216 {
2217         struct cx231xx_fh *fh = filp->private_data;
2218         struct cx231xx *dev = fh->dev;
2219         int rc;
2220
2221         rc = check_dev(dev);
2222         if (rc < 0)
2223                 return rc;
2224
2225         mutex_lock(&dev->lock);
2226         rc = res_get(fh);
2227         mutex_unlock(&dev->lock);
2228
2229         if (unlikely(rc < 0))
2230                 return rc;
2231
2232         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2233
2234         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2235                          (unsigned long)vma->vm_start,
2236                          (unsigned long)vma->vm_end -
2237                          (unsigned long)vma->vm_start, rc);
2238
2239         return rc;
2240 }
2241
2242 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2243         .owner   = THIS_MODULE,
2244         .open    = cx231xx_v4l2_open,
2245         .release = cx231xx_v4l2_close,
2246         .read    = cx231xx_v4l2_read,
2247         .poll    = cx231xx_v4l2_poll,
2248         .mmap    = cx231xx_v4l2_mmap,
2249         .ioctl   = video_ioctl2,
2250 };
2251
2252 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2253         .vidioc_querycap               = vidioc_querycap,
2254         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2255         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2256         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2257         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2258         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2259         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2260         .vidioc_s_fmt_vbi_cap          = vidioc_try_fmt_vbi_cap,
2261         .vidioc_g_audio                =  vidioc_g_audio,
2262         .vidioc_s_audio                = vidioc_s_audio,
2263         .vidioc_cropcap                = vidioc_cropcap,
2264         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2265         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2266         .vidioc_reqbufs                = vidioc_reqbufs,
2267         .vidioc_querybuf               = vidioc_querybuf,
2268         .vidioc_qbuf                   = vidioc_qbuf,
2269         .vidioc_dqbuf                  = vidioc_dqbuf,
2270         .vidioc_s_std                  = vidioc_s_std,
2271         .vidioc_g_std                  = vidioc_g_std,
2272         .vidioc_enum_input             = vidioc_enum_input,
2273         .vidioc_g_input                = vidioc_g_input,
2274         .vidioc_s_input                = vidioc_s_input,
2275         .vidioc_queryctrl              = vidioc_queryctrl,
2276         .vidioc_g_ctrl                 = vidioc_g_ctrl,
2277         .vidioc_s_ctrl                 = vidioc_s_ctrl,
2278         .vidioc_streamon               = vidioc_streamon,
2279         .vidioc_streamoff              = vidioc_streamoff,
2280         .vidioc_g_tuner                = vidioc_g_tuner,
2281         .vidioc_s_tuner                = vidioc_s_tuner,
2282         .vidioc_g_frequency            = vidioc_g_frequency,
2283         .vidioc_s_frequency            = vidioc_s_frequency,
2284 #ifdef CONFIG_VIDEO_ADV_DEBUG
2285         .vidioc_g_register             = vidioc_g_register,
2286         .vidioc_s_register             = vidioc_s_register,
2287 #endif
2288 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2289         .vidiocgmbuf                   = vidiocgmbuf,
2290 #endif
2291 };
2292
2293 static struct video_device cx231xx_vbi_template;
2294
2295 static const struct video_device cx231xx_video_template = {
2296         .fops         = &cx231xx_v4l_fops,
2297         .release      = video_device_release,
2298         .ioctl_ops    = &video_ioctl_ops,
2299         .minor        = -1,
2300         .tvnorms      = V4L2_STD_ALL,
2301         .current_norm = V4L2_STD_PAL,
2302 };
2303
2304 static const struct v4l2_file_operations radio_fops = {
2305         .owner   = THIS_MODULE,
2306         .open   = cx231xx_v4l2_open,
2307         .release = cx231xx_v4l2_close,
2308         .ioctl   = video_ioctl2,
2309 };
2310
2311 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2312         .vidioc_querycap    = radio_querycap,
2313         .vidioc_g_tuner     = radio_g_tuner,
2314         .vidioc_enum_input  = radio_enum_input,
2315         .vidioc_g_audio     = radio_g_audio,
2316         .vidioc_s_tuner     = radio_s_tuner,
2317         .vidioc_s_audio     = radio_s_audio,
2318         .vidioc_s_input     = radio_s_input,
2319         .vidioc_queryctrl   = radio_queryctrl,
2320         .vidioc_g_ctrl      = vidioc_g_ctrl,
2321         .vidioc_s_ctrl      = vidioc_s_ctrl,
2322         .vidioc_g_frequency = vidioc_g_frequency,
2323         .vidioc_s_frequency = vidioc_s_frequency,
2324 #ifdef CONFIG_VIDEO_ADV_DEBUG
2325         .vidioc_g_register  = vidioc_g_register,
2326         .vidioc_s_register  = vidioc_s_register,
2327 #endif
2328 };
2329
2330 static struct video_device cx231xx_radio_template = {
2331         .name      = "cx231xx-radio",
2332         .fops      = &radio_fops,
2333         .ioctl_ops = &radio_ioctl_ops,
2334         .minor     = -1,
2335 };
2336
2337 /******************************** usb interface ******************************/
2338
2339 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2340                 const struct video_device
2341                 *template, const char *type_name)
2342 {
2343         struct video_device *vfd;
2344
2345         vfd = video_device_alloc();
2346         if (NULL == vfd)
2347                 return NULL;
2348
2349         *vfd = *template;
2350         vfd->minor = -1;
2351         vfd->parent = &dev->udev->dev;
2352         vfd->release = video_device_release;
2353         vfd->debug = video_debug;
2354
2355         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2356
2357         return vfd;
2358 }
2359
2360 int cx231xx_register_analog_devices(struct cx231xx *dev)
2361 {
2362         int ret;
2363
2364         cx231xx_info("%s()\n", __func__);
2365
2366         cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2367                      dev->name,
2368                      (CX231XX_VERSION_CODE >> 16) & 0xff,
2369                      (CX231XX_VERSION_CODE >> 8) & 0xff,
2370                      CX231XX_VERSION_CODE & 0xff);
2371
2372         /* set default norm */
2373         /*dev->norm = cx231xx_video_template.current_norm; */
2374         dev->width = norm_maxw(dev);
2375         dev->height = norm_maxh(dev);
2376         dev->interlaced = 0;
2377         dev->hscale = 0;
2378         dev->vscale = 0;
2379
2380         /* Analog specific initialization */
2381         dev->format = &format[0];
2382         /* video_mux(dev, dev->video_input); */
2383
2384         /* Audio defaults */
2385         dev->mute = 1;
2386         dev->volume = 0x1f;
2387
2388         /* enable vbi capturing */
2389         /* write code here...  */
2390
2391         /* allocate and fill video video_device struct */
2392         dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2393         if (!dev->vdev) {
2394                 cx231xx_errdev("cannot allocate video_device.\n");
2395                 return -ENODEV;
2396         }
2397
2398         /* register v4l2 video video_device */
2399         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2400                                     video_nr[dev->devno]);
2401         if (ret) {
2402                 cx231xx_errdev("unable to register video device (error=%i).\n",
2403                                ret);
2404                 return ret;
2405         }
2406
2407         cx231xx_info("%s/0: registered device video%d [v4l2]\n",
2408                      dev->name, dev->vdev->num);
2409
2410         /* Initialize VBI template */
2411         memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2412                sizeof(cx231xx_vbi_template));
2413         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2414
2415         /* Allocate and fill vbi video_device struct */
2416         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2417
2418         /* register v4l2 vbi video_device */
2419         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2420                                     vbi_nr[dev->devno]);
2421         if (ret < 0) {
2422                 cx231xx_errdev("unable to register vbi device\n");
2423                 return ret;
2424         }
2425
2426         cx231xx_info("%s/0: registered device vbi%d\n",
2427                      dev->name, dev->vbi_dev->num);
2428
2429         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2430                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2431                                                    "radio");
2432                 if (!dev->radio_dev) {
2433                         cx231xx_errdev("cannot allocate video_device.\n");
2434                         return -ENODEV;
2435                 }
2436                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2437                                             radio_nr[dev->devno]);
2438                 if (ret < 0) {
2439                         cx231xx_errdev("can't register radio device\n");
2440                         return ret;
2441                 }
2442                 cx231xx_info("Registered radio device as /dev/radio%d\n",
2443                              dev->radio_dev->num);
2444         }
2445
2446         cx231xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2447                      dev->vdev->num, dev->vbi_dev->num);
2448
2449         return 0;
2450 }