drivers/media/video/cx231xx/cx231xx-video.c

   1 /*
   2    cx231xx-video.c - driver for Conexant Cx23100/101/102
   3                      USB video capture devices
   4
   5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   6         Based on em28xx driver
   7         Based on cx23885 driver
   8         Based on cx88 driver
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/init.h>
  26 #include <linux/list.h>
  27 #include <linux/module.h>
  28 #include <linux/kernel.h>
  29 #include <linux/bitmap.h>
  30 #include <linux/usb.h>
  31 #include <linux/i2c.h>
  32 #include <linux/version.h>
  33 #include <linux/mm.h>
  34 #include <linux/mutex.h>
  35
  36 #include <media/v4l2-common.h>
  37 #include <media/v4l2-ioctl.h>
  38 #include <media/v4l2-chip-ident.h>
  39 #include <media/msp3400.h>
  40 #include <media/tuner.h>
  41
  42 #include "dvb_frontend.h"
  43
  44 #include "cx231xx.h"
  45 #include "cx231xx-vbi.h"
  46
  47 #define CX231XX_VERSION_CODE            KERNEL_VERSION(0, 0, 1)
  48
  49 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  50 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  51
  52 #define cx231xx_videodbg(fmt, arg...) do {\
  53         if (video_debug) \
  54                 printk(KERN_INFO "%s %s :"fmt, \
  55                          dev->name, __func__ , ##arg); } while (0)
  56
  57 static unsigned int isoc_debug;
  58 module_param(isoc_debug, int, 0644);
  59 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  60
  61 #define cx231xx_isocdbg(fmt, arg...) \
  62 do {\
  63         if (isoc_debug) { \
  64                 printk(KERN_INFO "%s %s :"fmt, \
  65                          dev->name, __func__ , ##arg); \
  66         } \
  67   } while (0)
  68
  69 MODULE_AUTHOR(DRIVER_AUTHOR);
  70 MODULE_DESCRIPTION(DRIVER_DESC);
  71 MODULE_LICENSE("GPL");
  72
  73 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  74 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  75 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  76 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  77
  78 module_param_array(card, int, NULL, 0444);
  79 module_param_array(video_nr, int, NULL, 0444);
  80 module_param_array(vbi_nr, int, NULL, 0444);
  81 module_param_array(radio_nr, int, NULL, 0444);
  82
  83 MODULE_PARM_DESC(card, "card type");
  84 MODULE_PARM_DESC(video_nr, "video device numbers");
  85 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  86 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  87
  88 static unsigned int video_debug;
  89 module_param(video_debug, int, 0644);
  90 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  91
  92 /* supported video standards */
  93 static struct cx231xx_fmt format[] = {
  94         {
  95          .name = "16bpp YUY2, 4:2:2, packed",
  96          .fourcc = V4L2_PIX_FMT_YUYV,
  97          .depth = 16,
  98          .reg = 0,
  99          },
 100 };
 101
 102 /* supported controls */
 103 /* Common to all boards */
 104
 105 /* ------------------------------------------------------------------- */
 106
 107 static const struct v4l2_queryctrl no_ctl = {
 108         .name = "42",
 109         .flags = V4L2_CTRL_FLAG_DISABLED,
 110 };
 111
 112 static struct cx231xx_ctrl cx231xx_ctls[] = {
 113         /* --- video --- */
 114         {
 115                 .v = {
 116                         .id = V4L2_CID_BRIGHTNESS,
 117                         .name = "Brightness",
 118                         .minimum = 0x00,
 119                         .maximum = 0xff,
 120                         .step = 1,
 121                         .default_value = 0x7f,
 122                         .type = V4L2_CTRL_TYPE_INTEGER,
 123                 },
 124                 .off = 128,
 125                 .reg = LUMA_CTRL,
 126                 .mask = 0x00ff,
 127                 .shift = 0,
 128         }, {
 129                 .v = {
 130                         .id = V4L2_CID_CONTRAST,
 131                         .name = "Contrast",
 132                         .minimum = 0,
 133                         .maximum = 0xff,
 134                         .step = 1,
 135                         .default_value = 0x3f,
 136                         .type = V4L2_CTRL_TYPE_INTEGER,
 137                 },
 138                 .off = 0,
 139                 .reg = LUMA_CTRL,
 140                 .mask = 0xff00,
 141                 .shift = 8,
 142         }, {
 143                 .v = {
 144                         .id = V4L2_CID_HUE,
 145                         .name = "Hue",
 146                         .minimum = 0,
 147                         .maximum = 0xff,
 148                         .step = 1,
 149                         .default_value = 0x7f,
 150                         .type = V4L2_CTRL_TYPE_INTEGER,
 151                 },
 152                 .off = 128,
 153                 .reg = CHROMA_CTRL,
 154                 .mask = 0xff0000,
 155                 .shift = 16,
 156         }, {
 157         /* strictly, this only describes only U saturation.
 158         * V saturation is handled specially through code.
 159         */
 160                 .v = {
 161                         .id = V4L2_CID_SATURATION,
 162                         .name = "Saturation",
 163                         .minimum = 0,
 164                         .maximum = 0xff,
 165                         .step = 1,
 166                         .default_value = 0x7f,
 167                         .type = V4L2_CTRL_TYPE_INTEGER,
 168                 },
 169                 .off = 0,
 170                 .reg = CHROMA_CTRL,
 171                 .mask = 0x00ff,
 172                 .shift = 0,
 173         }, {
 174                 /* --- audio --- */
 175                 .v = {
 176                         .id = V4L2_CID_AUDIO_MUTE,
 177                         .name = "Mute",
 178                         .minimum = 0,
 179                         .maximum = 1,
 180                         .default_value = 1,
 181                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 182                 },
 183                 .reg = PATH1_CTL1,
 184                 .mask = (0x1f << 24),
 185                 .shift = 24,
 186         }, {
 187                 .v = {
 188                         .id = V4L2_CID_AUDIO_VOLUME,
 189                         .name = "Volume",
 190                         .minimum = 0,
 191                         .maximum = 0x3f,
 192                         .step = 1,
 193                         .default_value = 0x3f,
 194                         .type = V4L2_CTRL_TYPE_INTEGER,
 195                 },
 196                 .reg = PATH1_VOL_CTL,
 197                 .mask = 0xff,
 198                 .shift = 0,
 199         }
 200 };
 201 static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls);
 202
 203 static const u32 cx231xx_user_ctrls[] = {
 204         V4L2_CID_USER_CLASS,
 205         V4L2_CID_BRIGHTNESS,
 206         V4L2_CID_CONTRAST,
 207         V4L2_CID_SATURATION,
 208         V4L2_CID_HUE,
 209         V4L2_CID_AUDIO_VOLUME,
 210 #if 0
 211         V4L2_CID_AUDIO_BALANCE,
 212 #endif
 213         V4L2_CID_AUDIO_MUTE,
 214         0
 215 };
 216
 217 static const u32 *ctrl_classes[] = {
 218         cx231xx_user_ctrls,
 219         NULL
 220 };
 221
 222 /* ------------------------------------------------------------------
 223         Video buffer and parser functions
 224    ------------------------------------------------------------------*/
 225
 226 /*
 227  * Announces that a buffer were filled and request the next
 228  */
 229 static inline void buffer_filled(struct cx231xx *dev,
 230                                  struct cx231xx_dmaqueue *dma_q,
 231                                  struct cx231xx_buffer *buf)
 232 {
 233         /* Advice that buffer was filled */
 234         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 235         buf->vb.state = VIDEOBUF_DONE;
 236         buf->vb.field_count++;
 237         do_gettimeofday(&buf->vb.ts);
 238
 239         dev->video_mode.isoc_ctl.buf = NULL;
 240
 241         list_del(&buf->vb.queue);
 242         wake_up(&buf->vb.done);
 243 }
 244
 245 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 246 {
 247         char *errmsg = "Unknown";
 248
 249         switch (status) {
 250         case -ENOENT:
 251                 errmsg = "unlinked synchronuously";
 252                 break;
 253         case -ECONNRESET:
 254                 errmsg = "unlinked asynchronuously";
 255                 break;
 256         case -ENOSR:
 257                 errmsg = "Buffer error (overrun)";
 258                 break;
 259         case -EPIPE:
 260                 errmsg = "Stalled (device not responding)";
 261                 break;
 262         case -EOVERFLOW:
 263                 errmsg = "Babble (bad cable?)";
 264                 break;
 265         case -EPROTO:
 266                 errmsg = "Bit-stuff error (bad cable?)";
 267                 break;
 268         case -EILSEQ:
 269                 errmsg = "CRC/Timeout (could be anything)";
 270                 break;
 271         case -ETIME:
 272                 errmsg = "Device does not respond";
 273                 break;
 274         }
 275         if (packet < 0) {
 276                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 277         } else {
 278                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 279                                 packet, status, errmsg);
 280         }
 281 }
 282
 283 /*
 284  * video-buf generic routine to get the next available buffer
 285  */
 286 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 287                                 struct cx231xx_buffer **buf)
 288 {
 289         struct cx231xx_video_mode *vmode =
 290             container_of(dma_q, struct cx231xx_video_mode, vidq);
 291         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 292
 293         char *outp;
 294
 295         if (list_empty(&dma_q->active)) {
 296                 cx231xx_isocdbg("No active queue to serve\n");
 297                 dev->video_mode.isoc_ctl.buf = NULL;
 298                 *buf = NULL;
 299                 return;
 300         }
 301
 302         /* Get the next buffer */
 303         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 304
 305         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 306         outp = videobuf_to_vmalloc(&(*buf)->vb);
 307         memset(outp, 0, (*buf)->vb.size);
 308
 309         dev->video_mode.isoc_ctl.buf = *buf;
 310
 311         return;
 312 }
 313
 314 /*
 315  * Controls the isoc copy of each urb packet
 316  */
 317 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 318 {
 319         struct cx231xx_buffer *buf;
 320         struct cx231xx_dmaqueue *dma_q = urb->context;
 321         unsigned char *outp = NULL;
 322         int i, rc = 1;
 323         unsigned char *p_buffer;
 324         u32 bytes_parsed = 0, buffer_size = 0;
 325         u8 sav_eav = 0;
 326
 327         if (!dev)
 328                 return 0;
 329
 330         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 331                 return 0;
 332
 333         if (urb->status < 0) {
 334                 print_err_status(dev, -1, urb->status);
 335                 if (urb->status == -ENOENT)
 336                         return 0;
 337         }
 338
 339         buf = dev->video_mode.isoc_ctl.buf;
 340         if (buf != NULL)
 341                 outp = videobuf_to_vmalloc(&buf->vb);
 342
 343         for (i = 0; i < urb->number_of_packets; i++) {
 344                 int status = urb->iso_frame_desc[i].status;
 345
 346                 if (status < 0) {
 347                         print_err_status(dev, i, status);
 348                         if (urb->iso_frame_desc[i].status != -EPROTO)
 349                                 continue;
 350                 }
 351
 352                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 353                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 354                         continue;
 355                 }
 356                 if (urb->iso_frame_desc[i].actual_length >
 357                     dev->video_mode.max_pkt_size) {
 358                         cx231xx_isocdbg("packet bigger than packet size");
 359                         continue;
 360                 }
 361
 362                 /*  get buffer pointer and length */
 363                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 364                 buffer_size = urb->iso_frame_desc[i].actual_length;
 365                 bytes_parsed = 0;
 366
 367                 if (dma_q->is_partial_line) {
 368                         /* Handle the case of a partial line */
 369                         sav_eav = dma_q->last_sav;
 370                 } else {
 371                         /* Check for a SAV/EAV overlapping
 372                                 the buffer boundary */
 373                         sav_eav =
 374                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 375                                                           dma_q->partial_buf,
 376                                                           &bytes_parsed);
 377                 }
 378
 379                 sav_eav &= 0xF0;
 380                 /* Get the first line if we have some portion of an SAV/EAV from
 381                    the last buffer or a partial line  */
 382                 if (sav_eav) {
 383                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 384                                 sav_eav,        /* SAV/EAV */
 385                                 p_buffer + bytes_parsed,        /* p_buffer */
 386                                 buffer_size - bytes_parsed);/* buf size */
 387                 }
 388
 389                 /* Now parse data that is completely in this buffer */
 390                 /* dma_q->is_partial_line = 0;  */
 391
 392                 while (bytes_parsed < buffer_size) {
 393                         u32 bytes_used = 0;
 394
 395                         sav_eav = cx231xx_find_next_SAV_EAV(
 396                                 p_buffer + bytes_parsed,        /* p_buffer */
 397                                 buffer_size - bytes_parsed,     /* buf size */
 398                                 &bytes_used);/* bytes used to get SAV/EAV */
 399
 400                         bytes_parsed += bytes_used;
 401
 402                         sav_eav &= 0xF0;
 403                         if (sav_eav && (bytes_parsed < buffer_size)) {
 404                                 bytes_parsed += cx231xx_get_video_line(dev,
 405                                         dma_q, sav_eav, /* SAV/EAV */
 406                                         p_buffer + bytes_parsed,/* p_buffer */
 407                                         buffer_size - bytes_parsed);/*buf size*/
 408                         }
 409                 }
 410
 411                 /* Save the last four bytes of the buffer so we can check the
 412                    buffer boundary condition next time */
 413                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 414                 bytes_parsed = 0;
 415
 416         }
 417         return rc;
 418 }
 419
 420 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 421                                  u32 *p_bytes_used)
 422 {
 423         u32 bytes_used;
 424         u8 boundary_bytes[8];
 425         u8 sav_eav = 0;
 426
 427         *p_bytes_used = 0;
 428
 429         /* Create an array of the last 4 bytes of the last buffer and the first
 430            4 bytes of the current buffer. */
 431
 432         memcpy(boundary_bytes, partial_buf, 4);
 433         memcpy(boundary_bytes + 4, p_buffer, 4);
 434
 435         /* Check for the SAV/EAV in the boundary buffer */
 436         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 437                                             &bytes_used);
 438
 439         if (sav_eav) {
 440                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 441                    only those used in the new buffer */
 442                 *p_bytes_used = bytes_used - 4;
 443         }
 444
 445         return sav_eav;
 446 }
 447
 448 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 449 {
 450         u32 i;
 451         u8 sav_eav = 0;
 452
 453         /*
 454          * Don't search if the buffer size is less than 4.  It causes a page
 455          * fault since buffer_size - 4 evaluates to a large number in that
 456          * case.
 457          */
 458         if (buffer_size < 4) {
 459                 *p_bytes_used = buffer_size;
 460                 return 0;
 461         }
 462
 463         for (i = 0; i < (buffer_size - 3); i++) {
 464
 465                 if ((p_buffer[i] == 0xFF) &&
 466                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 467
 468                         *p_bytes_used = i + 4;
 469                         sav_eav = p_buffer[i + 3];
 470                         return sav_eav;
 471                 }
 472         }
 473
 474         *p_bytes_used = buffer_size;
 475         return 0;
 476 }
 477
 478 u32 cx231xx_get_video_line(struct cx231xx *dev,
 479                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 480                            u8 *p_buffer, u32 buffer_size)
 481 {
 482         u32 bytes_copied = 0;
 483         int current_field = -1;
 484
 485         switch (sav_eav) {
 486         case SAV_ACTIVE_VIDEO_FIELD1:
 487                 /* looking for skipped line which occurred in PAL 720x480 mode.
 488                    In this case, there will be no active data contained
 489                    between the SAV and EAV */
 490                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 491                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 492                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 493                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 494                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 495                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 496                         return bytes_copied;
 497                 current_field = 1;
 498                 break;
 499
 500         case SAV_ACTIVE_VIDEO_FIELD2:
 501                 /* looking for skipped line which occurred in PAL 720x480 mode.
 502                    In this case, there will be no active data contained between
 503                    the SAV and EAV */
 504                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 505                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 506                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 507                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 508                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 509                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 510                         return bytes_copied;
 511                 current_field = 2;
 512                 break;
 513         }
 514
 515         dma_q->last_sav = sav_eav;
 516
 517         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 518                                                buffer_size, current_field);
 519
 520         return bytes_copied;
 521 }
 522
 523 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 524                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 525                             u32 length, int field_number)
 526 {
 527         u32 bytes_to_copy;
 528         struct cx231xx_buffer *buf;
 529         u32 _line_size = dev->width * 2;
 530
 531         if (dma_q->current_field != field_number)
 532                 cx231xx_reset_video_buffer(dev, dma_q);
 533
 534         /* get the buffer pointer */
 535         buf = dev->video_mode.isoc_ctl.buf;
 536
 537         /* Remember the field number for next time */
 538         dma_q->current_field = field_number;
 539
 540         bytes_to_copy = dma_q->bytes_left_in_line;
 541         if (bytes_to_copy > length)
 542                 bytes_to_copy = length;
 543
 544         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 545                 dma_q->bytes_left_in_line -= bytes_to_copy;
 546                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 547                                           0 : 1;
 548                 return 0;
 549         }
 550
 551         dma_q->is_partial_line = 1;
 552
 553         /* If we don't have a buffer, just return the number of bytes we would
 554            have copied if we had a buffer. */
 555         if (!buf) {
 556                 dma_q->bytes_left_in_line -= bytes_to_copy;
 557                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 558                                          ? 0 : 1;
 559                 return bytes_to_copy;
 560         }
 561
 562         /* copy the data to video buffer */
 563         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 564
 565         dma_q->pos += bytes_to_copy;
 566         dma_q->bytes_left_in_line -= bytes_to_copy;
 567
 568         if (dma_q->bytes_left_in_line == 0) {
 569                 dma_q->bytes_left_in_line = _line_size;
 570                 dma_q->lines_completed++;
 571                 dma_q->is_partial_line = 0;
 572
 573                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 574                         buffer_filled(dev, dma_q, buf);
 575
 576                         dma_q->pos = 0;
 577                         buf = NULL;
 578                         dma_q->lines_completed = 0;
 579                 }
 580         }
 581
 582         return bytes_to_copy;
 583 }
 584
 585 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 586                                 struct cx231xx_dmaqueue *dma_q)
 587 {
 588         struct cx231xx_buffer *buf;
 589
 590         /* handle the switch from field 1 to field 2 */
 591         if (dma_q->current_field == 1) {
 592                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 593                         dma_q->field1_done = 1;
 594                 else
 595                         dma_q->field1_done = 0;
 596         }
 597
 598         buf = dev->video_mode.isoc_ctl.buf;
 599
 600         if (buf == NULL) {
 601                 u8 *outp = NULL;
 602                 /* first try to get the buffer */
 603                 get_next_buf(dma_q, &buf);
 604
 605                 if (buf)
 606                         outp = videobuf_to_vmalloc(&buf->vb);
 607
 608                 dma_q->pos = 0;
 609                 dma_q->field1_done = 0;
 610                 dma_q->current_field = -1;
 611         }
 612
 613         /* reset the counters */
 614         dma_q->bytes_left_in_line = dev->width << 1;
 615         dma_q->lines_completed = 0;
 616 }
 617
 618 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 619                     u8 *p_buffer, u32 bytes_to_copy)
 620 {
 621         u8 *p_out_buffer = NULL;
 622         u32 current_line_bytes_copied = 0;
 623         struct cx231xx_buffer *buf;
 624         u32 _line_size = dev->width << 1;
 625         void *startwrite;
 626         int offset, lencopy;
 627
 628         buf = dev->video_mode.isoc_ctl.buf;
 629
 630         if (buf == NULL)
 631                 return -1;
 632
 633         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 634
 635         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 636
 637         /* Offset field 2 one line from the top of the buffer */
 638         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 639
 640         /* Offset for field 2 */
 641         startwrite = p_out_buffer + offset;
 642
 643         /* lines already completed in the current field */
 644         startwrite += (dma_q->lines_completed * _line_size * 2);
 645
 646         /* bytes already completed in the current line */
 647         startwrite += current_line_bytes_copied;
 648
 649         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 650                   bytes_to_copy : dma_q->bytes_left_in_line;
 651
 652         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 653                 return 0;
 654
 655         /* The below copies the UYVY data straight into video buffer */
 656         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 657
 658         return 0;
 659 }
 660
 661 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 662 {
 663         u16 i;
 664
 665         if (len <= 0)
 666                 return;
 667
 668         for (i = 0; i < len / 2; i++)
 669                 to[i] = (from[i] << 8) | (from[i] >> 8);
 670 }
 671
 672 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 673 {
 674         u8 buffer_complete = 0;
 675
 676         /* Dual field stream */
 677         buffer_complete = ((dma_q->current_field == 2) &&
 678                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 679                             dma_q->field1_done);
 680
 681         return buffer_complete;
 682 }
 683
 684 /* ------------------------------------------------------------------
 685         Videobuf operations
 686    ------------------------------------------------------------------*/
 687
 688 static int
 689 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 690 {
 691         struct cx231xx_fh *fh = vq->priv_data;
 692         struct cx231xx *dev = fh->dev;
 693         struct v4l2_frequency f;
 694
 695         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 696         if (0 == *count)
 697                 *count = CX231XX_DEF_BUF;
 698
 699         if (*count < CX231XX_MIN_BUF)
 700                 *count = CX231XX_MIN_BUF;
 701
 702         /* Ask tuner to go to analog mode */
 703         memset(&f, 0, sizeof(f));
 704         f.frequency = dev->ctl_freq;
 705         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 706
 707         call_all(dev, tuner, s_frequency, &f);
 708
 709         return 0;
 710 }
 711
 712 /* This is called *without* dev->slock held; please keep it that way */
 713 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 714 {
 715         struct cx231xx_fh *fh = vq->priv_data;
 716         struct cx231xx *dev = fh->dev;
 717         unsigned long flags = 0;
 718
 719         if (in_interrupt())
 720                 BUG();
 721
 722         /* We used to wait for the buffer to finish here, but this didn't work
 723            because, as we were keeping the state as VIDEOBUF_QUEUED,
 724            videobuf_queue_cancel marked it as finished for us.
 725            (Also, it could wedge forever if the hardware was misconfigured.)
 726
 727            This should be safe; by the time we get here, the buffer isn't
 728            queued anymore. If we ever start marking the buffers as
 729            VIDEOBUF_ACTIVE, it won't be, though.
 730          */
 731         spin_lock_irqsave(&dev->video_mode.slock, flags);
 732         if (dev->video_mode.isoc_ctl.buf == buf)
 733                 dev->video_mode.isoc_ctl.buf = NULL;
 734         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 735
 736         videobuf_vmalloc_free(&buf->vb);
 737         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 738 }
 739
 740 static int
 741 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 742                enum v4l2_field field)
 743 {
 744         struct cx231xx_fh *fh = vq->priv_data;
 745         struct cx231xx_buffer *buf =
 746             container_of(vb, struct cx231xx_buffer, vb);
 747         struct cx231xx *dev = fh->dev;
 748         int rc = 0, urb_init = 0;
 749
 750         /* The only currently supported format is 16 bits/pixel */
 751         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 752                         + 7) >> 3;
 753         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 754                 return -EINVAL;
 755
 756         buf->vb.width = dev->width;
 757         buf->vb.height = dev->height;
 758         buf->vb.field = field;
 759
 760         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 761                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 762                 if (rc < 0)
 763                         goto fail;
 764         }
 765
 766         if (!dev->video_mode.isoc_ctl.num_bufs)
 767                 urb_init = 1;
 768
 769         if (urb_init) {
 770                 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 771                                        CX231XX_NUM_BUFS,
 772                                        dev->video_mode.max_pkt_size,
 773                                        cx231xx_isoc_copy);
 774                 if (rc < 0)
 775                         goto fail;
 776         }
 777
 778         buf->vb.state = VIDEOBUF_PREPARED;
 779         return 0;
 780
 781 fail:
 782         free_buffer(vq, buf);
 783         return rc;
 784 }
 785
 786 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 787 {
 788         struct cx231xx_buffer *buf =
 789             container_of(vb, struct cx231xx_buffer, vb);
 790         struct cx231xx_fh *fh = vq->priv_data;
 791         struct cx231xx *dev = fh->dev;
 792         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 793
 794         buf->vb.state = VIDEOBUF_QUEUED;
 795         list_add_tail(&buf->vb.queue, &vidq->active);
 796
 797 }
 798
 799 static void buffer_release(struct videobuf_queue *vq,
 800                            struct videobuf_buffer *vb)
 801 {
 802         struct cx231xx_buffer *buf =
 803             container_of(vb, struct cx231xx_buffer, vb);
 804         struct cx231xx_fh *fh = vq->priv_data;
 805         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 806
 807         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 808
 809         free_buffer(vq, buf);
 810 }
 811
 812 static struct videobuf_queue_ops cx231xx_video_qops = {
 813         .buf_setup = buffer_setup,
 814         .buf_prepare = buffer_prepare,
 815         .buf_queue = buffer_queue,
 816         .buf_release = buffer_release,
 817 };
 818
 819 /*********************  v4l2 interface  **************************************/
 820
 821 void video_mux(struct cx231xx *dev, int index)
 822 {
 823         dev->video_input = index;
 824         dev->ctl_ainput = INPUT(index)->amux;
 825
 826         cx231xx_set_video_input_mux(dev, index);
 827
 828         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 829
 830         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 831
 832         cx231xx_info("video_mux : %d\n", index);
 833
 834         /* do mode control overrides if required */
 835         cx231xx_do_mode_ctrl_overrides(dev);
 836 }
 837
 838 /* Usage lock check functions */
 839 static int res_get(struct cx231xx_fh *fh)
 840 {
 841         struct cx231xx *dev = fh->dev;
 842         int rc = 0;
 843
 844         /* This instance already has stream_on */
 845         if (fh->stream_on)
 846                 return rc;
 847
 848         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 849                 if (dev->stream_on)
 850                         return -EBUSY;
 851                 dev->stream_on = 1;
 852         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 853                 if (dev->vbi_stream_on)
 854                         return -EBUSY;
 855                 dev->vbi_stream_on = 1;
 856         } else
 857                 return -EINVAL;
 858
 859         fh->stream_on = 1;
 860
 861         return rc;
 862 }
 863
 864 static int res_check(struct cx231xx_fh *fh)
 865 {
 866         return fh->stream_on;
 867 }
 868
 869 static void res_free(struct cx231xx_fh *fh)
 870 {
 871         struct cx231xx *dev = fh->dev;
 872
 873         fh->stream_on = 0;
 874
 875         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 876                 dev->stream_on = 0;
 877         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 878                 dev->vbi_stream_on = 0;
 879 }
 880
 881 static int check_dev(struct cx231xx *dev)
 882 {
 883         if (dev->state & DEV_DISCONNECTED) {
 884                 cx231xx_errdev("v4l2 ioctl: device not present\n");
 885                 return -ENODEV;
 886         }
 887
 888         if (dev->state & DEV_MISCONFIGURED) {
 889                 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
 890                                "close and open it again\n");
 891                 return -EIO;
 892         }
 893         return 0;
 894 }
 895
 896 void get_scale(struct cx231xx *dev,
 897                unsigned int width, unsigned int height,
 898                unsigned int *hscale, unsigned int *vscale)
 899 {
 900         unsigned int maxw = norm_maxw(dev);
 901         unsigned int maxh = norm_maxh(dev);
 902
 903         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 904         if (*hscale >= 0x4000)
 905                 *hscale = 0x3fff;
 906
 907         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 908         if (*vscale >= 0x4000)
 909                 *vscale = 0x3fff;
 910
 911         dev->hscale = *hscale;
 912         dev->vscale = *vscale;
 913
 914 }
 915
 916 /* ------------------------------------------------------------------
 917         IOCTL vidioc handling
 918    ------------------------------------------------------------------*/
 919
 920 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 921                                 struct v4l2_format *f)
 922 {
 923         struct cx231xx_fh *fh = priv;
 924         struct cx231xx *dev = fh->dev;
 925
 926         mutex_lock(&dev->lock);
 927
 928         f->fmt.pix.width = dev->width;
 929         f->fmt.pix.height = dev->height;
 930         f->fmt.pix.pixelformat = dev->format->fourcc;;
 931         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;;
 932         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 933         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 934
 935         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 936
 937         mutex_unlock(&dev->lock);
 938
 939         return 0;
 940 }
 941
 942 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 943 {
 944         unsigned int i;
 945
 946         for (i = 0; i < ARRAY_SIZE(format); i++)
 947                 if (format[i].fourcc == fourcc)
 948                         return &format[i];
 949
 950         return NULL;
 951 }
 952
 953 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 954                                   struct v4l2_format *f)
 955 {
 956         struct cx231xx_fh *fh = priv;
 957         struct cx231xx *dev = fh->dev;
 958         int width = f->fmt.pix.width;
 959         int height = f->fmt.pix.height;
 960         unsigned int maxw = norm_maxw(dev);
 961         unsigned int maxh = norm_maxh(dev);
 962         unsigned int hscale, vscale;
 963         struct cx231xx_fmt *fmt;
 964
 965         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 966         if (!fmt) {
 967                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 968                                  f->fmt.pix.pixelformat);
 969                 return -EINVAL;
 970         }
 971
 972         /* width must even because of the YUYV format
 973            height must be even because of interlacing */
 974         height &= 0xfffe;
 975         width &= 0xfffe;
 976
 977         if (unlikely(height < 32))
 978                 height = 32;
 979         if (unlikely(height > maxh))
 980                 height = maxh;
 981         if (unlikely(width < 48))
 982                 width = 48;
 983         if (unlikely(width > maxw))
 984                 width = maxw;
 985
 986         get_scale(dev, width, height, &hscale, &vscale);
 987
 988         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 989         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 990
 991         f->fmt.pix.width = width;
 992         f->fmt.pix.height = height;
 993         f->fmt.pix.pixelformat = fmt->fourcc;
 994         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 995         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 996         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 997         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 998
 999         return 0;
1000 }
1001
1002 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1003                                 struct v4l2_format *f)
1004 {
1005         struct cx231xx_fh *fh = priv;
1006         struct cx231xx *dev = fh->dev;
1007         int rc;
1008         struct cx231xx_fmt *fmt;
1009
1010         rc = check_dev(dev);
1011         if (rc < 0)
1012                 return rc;
1013
1014         mutex_lock(&dev->lock);
1015
1016         vidioc_try_fmt_vid_cap(file, priv, f);
1017
1018         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1019         if (!fmt) {
1020                 rc = -EINVAL;
1021                 goto out;
1022         }
1023
1024         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1025                 cx231xx_errdev("%s queue busy\n", __func__);
1026                 rc = -EBUSY;
1027                 goto out;
1028         }
1029
1030         if (dev->stream_on && !fh->stream_on) {
1031                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1032                 rc = -EBUSY;
1033                 goto out;
1034         }
1035
1036         /* set new image size */
1037         dev->width = f->fmt.pix.width;
1038         dev->height = f->fmt.pix.height;
1039         dev->format = fmt;
1040         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1041
1042         call_all(dev, video, s_fmt, f);
1043
1044         /* Set the correct alternate setting for this resolution */
1045         cx231xx_resolution_set(dev);
1046
1047 out:
1048         mutex_unlock(&dev->lock);
1049         return rc;
1050 }
1051
1052 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1053 {
1054         struct cx231xx_fh *fh = priv;
1055         struct cx231xx *dev = fh->dev;
1056
1057         *id = dev->norm;
1058         return 0;
1059 }
1060
1061 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
1062 {
1063         struct cx231xx_fh *fh = priv;
1064         struct cx231xx *dev = fh->dev;
1065         struct v4l2_format f;
1066         int rc;
1067
1068         rc = check_dev(dev);
1069         if (rc < 0)
1070                 return rc;
1071
1072         cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1073
1074         mutex_lock(&dev->lock);
1075         dev->norm = *norm;
1076
1077         /* Adjusts width/height, if needed */
1078         f.fmt.pix.width = dev->width;
1079         f.fmt.pix.height = dev->height;
1080         vidioc_try_fmt_vid_cap(file, priv, &f);
1081
1082         /* set new image size */
1083         dev->width = f.fmt.pix.width;
1084         dev->height = f.fmt.pix.height;
1085         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1086
1087         call_all(dev, core, s_std, dev->norm);
1088
1089         mutex_unlock(&dev->lock);
1090
1091         cx231xx_resolution_set(dev);
1092
1093         /* do mode control overrides */
1094         cx231xx_do_mode_ctrl_overrides(dev);
1095
1096         return 0;
1097 }
1098
1099 static const char *iname[] = {
1100         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1101         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1102         [CX231XX_VMUX_TELEVISION] = "Television",
1103         [CX231XX_VMUX_CABLE]      = "Cable TV",
1104         [CX231XX_VMUX_DVB]        = "DVB",
1105         [CX231XX_VMUX_DEBUG]      = "for debug only",
1106 };
1107
1108 static int vidioc_enum_input(struct file *file, void *priv,
1109                              struct v4l2_input *i)
1110 {
1111         struct cx231xx_fh *fh = priv;
1112         struct cx231xx *dev = fh->dev;
1113         unsigned int n;
1114
1115         n = i->index;
1116         if (n >= MAX_CX231XX_INPUT)
1117                 return -EINVAL;
1118         if (0 == INPUT(n)->type)
1119                 return -EINVAL;
1120
1121         i->index = n;
1122         i->type = V4L2_INPUT_TYPE_CAMERA;
1123
1124         strcpy(i->name, iname[INPUT(n)->type]);
1125
1126         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1127             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1128                 i->type = V4L2_INPUT_TYPE_TUNER;
1129
1130         i->std = dev->vdev->tvnorms;
1131
1132         return 0;
1133 }
1134
1135 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1136 {
1137         struct cx231xx_fh *fh = priv;
1138         struct cx231xx *dev = fh->dev;
1139
1140         *i = dev->video_input;
1141
1142         return 0;
1143 }
1144
1145 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1146 {
1147         struct cx231xx_fh *fh = priv;
1148         struct cx231xx *dev = fh->dev;
1149         int rc;
1150
1151         rc = check_dev(dev);
1152         if (rc < 0)
1153                 return rc;
1154
1155         if (i >= MAX_CX231XX_INPUT)
1156                 return -EINVAL;
1157         if (0 == INPUT(i)->type)
1158                 return -EINVAL;
1159
1160         mutex_lock(&dev->lock);
1161
1162         video_mux(dev, i);
1163
1164         mutex_unlock(&dev->lock);
1165         return 0;
1166 }
1167
1168 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1169 {
1170         struct cx231xx_fh *fh = priv;
1171         struct cx231xx *dev = fh->dev;
1172
1173         switch (a->index) {
1174         case CX231XX_AMUX_VIDEO:
1175                 strcpy(a->name, "Television");
1176                 break;
1177         case CX231XX_AMUX_LINE_IN:
1178                 strcpy(a->name, "Line In");
1179                 break;
1180         default:
1181                 return -EINVAL;
1182         }
1183
1184         a->index = dev->ctl_ainput;
1185         a->capability = V4L2_AUDCAP_STEREO;
1186
1187         return 0;
1188 }
1189
1190 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1191 {
1192         struct cx231xx_fh *fh = priv;
1193         struct cx231xx *dev = fh->dev;
1194         int status = 0;
1195
1196         /* Doesn't allow manual routing */
1197         if (a->index != dev->ctl_ainput)
1198                 return -EINVAL;
1199
1200         dev->ctl_ainput = INPUT(a->index)->amux;
1201         status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1202
1203         return status;
1204 }
1205
1206 static int vidioc_queryctrl(struct file *file, void *priv,
1207                             struct v4l2_queryctrl *qc)
1208 {
1209         struct cx231xx_fh *fh = priv;
1210         struct cx231xx *dev = fh->dev;
1211         int id = qc->id;
1212         int i;
1213         int rc;
1214
1215         rc = check_dev(dev);
1216         if (rc < 0)
1217                 return rc;
1218
1219         qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1220         if (unlikely(qc->id == 0))
1221                 return -EINVAL;
1222
1223         memset(qc, 0, sizeof(*qc));
1224
1225         qc->id = id;
1226
1227         if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1228                 return -EINVAL;
1229
1230         for (i = 0; i < CX231XX_CTLS; i++)
1231                 if (cx231xx_ctls[i].v.id == qc->id)
1232                         break;
1233
1234         if (i == CX231XX_CTLS) {
1235                 *qc = no_ctl;
1236                 return 0;
1237         }
1238         *qc = cx231xx_ctls[i].v;
1239
1240         mutex_lock(&dev->lock);
1241         call_all(dev, core, queryctrl, qc);
1242         mutex_unlock(&dev->lock);
1243
1244         if (qc->type)
1245                 return 0;
1246         else
1247                 return -EINVAL;
1248 }
1249
1250 static int vidioc_g_ctrl(struct file *file, void *priv,
1251                          struct v4l2_control *ctrl)
1252 {
1253         struct cx231xx_fh *fh = priv;
1254         struct cx231xx *dev = fh->dev;
1255         int rc;
1256
1257         rc = check_dev(dev);
1258         if (rc < 0)
1259                 return rc;
1260
1261         mutex_lock(&dev->lock);
1262         call_all(dev, core, g_ctrl, ctrl);
1263         mutex_unlock(&dev->lock);
1264         return rc;
1265 }
1266
1267 static int vidioc_s_ctrl(struct file *file, void *priv,
1268                          struct v4l2_control *ctrl)
1269 {
1270         struct cx231xx_fh *fh = priv;
1271         struct cx231xx *dev = fh->dev;
1272         int rc;
1273
1274         rc = check_dev(dev);
1275         if (rc < 0)
1276                 return rc;
1277
1278         mutex_lock(&dev->lock);
1279         call_all(dev, core, s_ctrl, ctrl);
1280         mutex_unlock(&dev->lock);
1281         return rc;
1282 }
1283
1284 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1285 {
1286         struct cx231xx_fh *fh = priv;
1287         struct cx231xx *dev = fh->dev;
1288         int rc;
1289
1290         rc = check_dev(dev);
1291         if (rc < 0)
1292                 return rc;
1293
1294         if (0 != t->index)
1295                 return -EINVAL;
1296
1297         strcpy(t->name, "Tuner");
1298
1299         t->type = V4L2_TUNER_ANALOG_TV;
1300         t->capability = V4L2_TUNER_CAP_NORM;
1301         t->rangehigh = 0xffffffffUL;
1302         t->signal = 0xffff;     /* LOCKED */
1303
1304         return 0;
1305 }
1306
1307 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1308 {
1309         struct cx231xx_fh *fh = priv;
1310         struct cx231xx *dev = fh->dev;
1311         int rc;
1312
1313         rc = check_dev(dev);
1314         if (rc < 0)
1315                 return rc;
1316
1317         if (0 != t->index)
1318                 return -EINVAL;
1319 #if 0
1320         mutex_lock(&dev->lock);
1321         call_all(dev, tuner, s_tuner, t);
1322         mutex_unlock(&dev->lock);
1323 #endif
1324         return 0;
1325 }
1326
1327 static int vidioc_g_frequency(struct file *file, void *priv,
1328                               struct v4l2_frequency *f)
1329 {
1330         struct cx231xx_fh *fh = priv;
1331         struct cx231xx *dev = fh->dev;
1332
1333         mutex_lock(&dev->lock);
1334         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1335         f->frequency = dev->ctl_freq;
1336
1337         call_all(dev, tuner, g_frequency, f);
1338
1339         mutex_unlock(&dev->lock);
1340
1341         return 0;
1342 }
1343
1344 static int vidioc_s_frequency(struct file *file, void *priv,
1345                               struct v4l2_frequency *f)
1346 {
1347         struct cx231xx_fh *fh = priv;
1348         struct cx231xx *dev = fh->dev;
1349         int rc;
1350
1351         rc = check_dev(dev);
1352         if (rc < 0)
1353                 return rc;
1354
1355         if (0 != f->tuner)
1356                 return -EINVAL;
1357
1358         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1359                 return -EINVAL;
1360         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1361                 return -EINVAL;
1362
1363         /* set pre channel change settings in DIF first */
1364         rc = cx231xx_tuner_pre_channel_change(dev);
1365
1366         mutex_lock(&dev->lock);
1367
1368         dev->ctl_freq = f->frequency;
1369
1370         if (dev->tuner_type == TUNER_XC5000) {
1371                 if (dev->cx231xx_set_analog_freq != NULL)
1372                         dev->cx231xx_set_analog_freq(dev, f->frequency);
1373         } else
1374                 call_all(dev, tuner, s_frequency, f);
1375
1376         mutex_unlock(&dev->lock);
1377
1378         /* set post channel change settings in DIF first */
1379         rc = cx231xx_tuner_post_channel_change(dev);
1380
1381         cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1382
1383         return rc;
1384 }
1385
1386 #ifdef CONFIG_VIDEO_ADV_DEBUG
1387
1388 /*
1389   -R, --list-registers=type=<host/i2cdrv/i2caddr>,
1390                                 chip=<chip>[,min=<addr>,max=<addr>]
1391                      dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1392   -r, --set-register=type=<host/i2cdrv/i2caddr>,
1393                                 chip=<chip>,reg=<addr>,val=<val>
1394                      set the register [VIDIOC_DBG_S_REGISTER]
1395
1396   if type == host, then <chip> is the hosts chip ID (default 0)
1397   if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1398   if type == i2caddr, then <chip> is the 7-bit I2C address
1399 */
1400
1401 static int vidioc_g_register(struct file *file, void *priv,
1402                              struct v4l2_dbg_register *reg)
1403 {
1404         struct cx231xx_fh *fh = priv;
1405         struct cx231xx *dev = fh->dev;
1406         int ret = 0;
1407         u8 value[4] = { 0, 0, 0, 0 };
1408         u32 data = 0;
1409
1410         switch (reg->match.type) {
1411         case V4L2_CHIP_MATCH_HOST:
1412                 switch (reg->match.addr) {
1413                 case 0: /* Cx231xx - internal registers */
1414                         ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1415                                                   (u16)reg->reg, value, 4);
1416                         reg->val = value[0] | value[1] << 8 |
1417                                    value[2] << 16 | value[3] << 24;
1418                         break;
1419                 case 1: /* AFE - read byte */
1420                         ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1421                                                   (u16)reg->reg, 2, &data, 1);
1422                         reg->val = le32_to_cpu(data & 0xff);
1423                         break;
1424                 case 14: /* AFE - read dword */
1425                         ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1426                                                   (u16)reg->reg, 2, &data, 4);
1427                         reg->val = le32_to_cpu(data);
1428                         break;
1429                 case 2: /* Video Block - read byte */
1430                         ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1431                                                   (u16)reg->reg, 2, &data, 1);
1432                         reg->val = le32_to_cpu(data & 0xff);
1433                         break;
1434                 case 24: /* Video Block - read dword */
1435                         ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1436                                                   (u16)reg->reg, 2, &data, 4);
1437                         reg->val = le32_to_cpu(data);
1438                         break;
1439                 case 3: /* I2S block - read byte */
1440                         ret = cx231xx_read_i2c_data(dev,
1441                                                     I2S_BLK_DEVICE_ADDRESS,
1442                                                     (u16)reg->reg, 1,
1443                                                     &data, 1);
1444                         reg->val = le32_to_cpu(data & 0xff);
1445                         break;
1446                 case 34: /* I2S Block - read dword */
1447                         ret =
1448                             cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1449                                                   (u16)reg->reg, 1, &data, 4);
1450                         reg->val = le32_to_cpu(data);
1451                         break;
1452                 }
1453                 return ret < 0 ? ret : 0;
1454
1455         case V4L2_CHIP_MATCH_I2C_DRIVER:
1456                 call_all(dev, core, g_register, reg);
1457                 return 0;
1458         case V4L2_CHIP_MATCH_I2C_ADDR:
1459                 /* Not supported yet */
1460                 return -EINVAL;
1461         default:
1462                 if (!v4l2_chip_match_host(&reg->match))
1463                         return -EINVAL;
1464         }
1465
1466         mutex_lock(&dev->lock);
1467         call_all(dev, core, g_register, reg);
1468         mutex_unlock(&dev->lock);
1469
1470         return ret;
1471 }
1472
1473 static int vidioc_s_register(struct file *file, void *priv,
1474                              struct v4l2_dbg_register *reg)
1475 {
1476         struct cx231xx_fh *fh = priv;
1477         struct cx231xx *dev = fh->dev;
1478         int ret = 0;
1479         __le64 buf;
1480         u32 value;
1481         u8 data[4] = { 0, 0, 0, 0 };
1482
1483         buf = cpu_to_le64(reg->val);
1484
1485         switch (reg->match.type) {
1486         case V4L2_CHIP_MATCH_HOST:
1487                 {
1488                         value = (u32) buf & 0xffffffff;
1489
1490                         switch (reg->match.addr) {
1491                         case 0: /* cx231xx internal registers */
1492                                 data[0] = (u8) value;
1493                                 data[1] = (u8) (value >> 8);
1494                                 data[2] = (u8) (value >> 16);
1495                                 data[3] = (u8) (value >> 24);
1496                                 ret = cx231xx_write_ctrl_reg(dev,
1497                                                            VRT_SET_REGISTER,
1498                                                            (u16)reg->reg, data,
1499                                                            4);
1500                                 break;
1501                         case 1: /* AFE - read byte */
1502                                 ret = cx231xx_write_i2c_data(dev,
1503                                                         AFE_DEVICE_ADDRESS,
1504                                                         (u16)reg->reg, 2,
1505                                                         value, 1);
1506                                 break;
1507                         case 14: /* AFE - read dword */
1508                                 ret = cx231xx_write_i2c_data(dev,
1509                                                         AFE_DEVICE_ADDRESS,
1510                                                         (u16)reg->reg, 2,
1511                                                         value, 4);
1512                                 break;
1513                         case 2: /* Video Block - read byte */
1514                                 ret =
1515                                     cx231xx_write_i2c_data(dev,
1516                                                         VID_BLK_I2C_ADDRESS,
1517                                                         (u16)reg->reg, 2,
1518                                                         value, 1);
1519                                 break;
1520                         case 24: /* Video Block - read dword */
1521                                 ret =
1522                                     cx231xx_write_i2c_data(dev,
1523                                                         VID_BLK_I2C_ADDRESS,
1524                                                         (u16)reg->reg, 2,
1525                                                         value, 4);
1526                                 break;
1527                         case 3: /* I2S block - read byte */
1528                                 ret =
1529                                     cx231xx_write_i2c_data(dev,
1530                                                         I2S_BLK_DEVICE_ADDRESS,
1531                                                         (u16)reg->reg, 1,
1532                                                         value, 1);
1533                                 break;
1534                         case 34: /* I2S block - read dword */
1535                                 ret =
1536                                     cx231xx_write_i2c_data(dev,
1537                                                         I2S_BLK_DEVICE_ADDRESS,
1538                                                         (u16)reg->reg, 1,
1539                                                         value, 4);
1540                                 break;
1541                         }
1542                 }
1543                 return ret < 0 ? ret : 0;
1544
1545         default:
1546                 break;
1547         }
1548
1549         mutex_lock(&dev->lock);
1550         call_all(dev, core, s_register, reg);
1551         mutex_unlock(&dev->lock);
1552
1553         return ret;
1554 }
1555 #endif
1556
1557 static int vidioc_cropcap(struct file *file, void *priv,
1558                           struct v4l2_cropcap *cc)
1559 {
1560         struct cx231xx_fh *fh = priv;
1561         struct cx231xx *dev = fh->dev;
1562
1563         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1564                 return -EINVAL;
1565
1566         cc->bounds.left = 0;
1567         cc->bounds.top = 0;
1568         cc->bounds.width = dev->width;
1569         cc->bounds.height = dev->height;
1570         cc->defrect = cc->bounds;
1571         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1572         cc->pixelaspect.denominator = 59;
1573
1574         return 0;
1575 }
1576
1577 static int vidioc_streamon(struct file *file, void *priv,
1578                            enum v4l2_buf_type type)
1579 {
1580         struct cx231xx_fh *fh = priv;
1581         struct cx231xx *dev = fh->dev;
1582         int rc;
1583
1584         rc = check_dev(dev);
1585         if (rc < 0)
1586                 return rc;
1587
1588         mutex_lock(&dev->lock);
1589         rc = res_get(fh);
1590
1591         if (likely(rc >= 0))
1592                 rc = videobuf_streamon(&fh->vb_vidq);
1593
1594         call_all(dev, video, s_stream, 1);
1595
1596         mutex_unlock(&dev->lock);
1597
1598         return rc;
1599 }
1600
1601 static int vidioc_streamoff(struct file *file, void *priv,
1602                             enum v4l2_buf_type type)
1603 {
1604         struct cx231xx_fh *fh = priv;
1605         struct cx231xx *dev = fh->dev;
1606         int rc;
1607
1608         rc = check_dev(dev);
1609         if (rc < 0)
1610                 return rc;
1611
1612         if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1613             (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1614                 return -EINVAL;
1615         if (type != fh->type)
1616                 return -EINVAL;
1617
1618         mutex_lock(&dev->lock);
1619
1620         cx25840_call(dev, video, s_stream, 0);
1621
1622         videobuf_streamoff(&fh->vb_vidq);
1623         res_free(fh);
1624
1625         mutex_unlock(&dev->lock);
1626
1627         return 0;
1628 }
1629
1630 static int vidioc_querycap(struct file *file, void *priv,
1631                            struct v4l2_capability *cap)
1632 {
1633         struct cx231xx_fh *fh = priv;
1634         struct cx231xx *dev = fh->dev;
1635
1636         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1637         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1638         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1639
1640         cap->version = CX231XX_VERSION_CODE;
1641
1642         cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1643 #if 0
1644                 V4L2_CAP_SLICED_VBI_CAPTURE |
1645 #endif
1646                 V4L2_CAP_VIDEO_CAPTURE  |
1647                 V4L2_CAP_AUDIO          |
1648                 V4L2_CAP_READWRITE      |
1649                 V4L2_CAP_STREAMING;
1650
1651         if (dev->tuner_type != TUNER_ABSENT)
1652                 cap->capabilities |= V4L2_CAP_TUNER;
1653
1654         return 0;
1655 }
1656
1657 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1658                                    struct v4l2_fmtdesc *f)
1659 {
1660         if (unlikely(f->index >= ARRAY_SIZE(format)))
1661                 return -EINVAL;
1662
1663         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1664         f->pixelformat = format[f->index].fourcc;
1665
1666         return 0;
1667 }
1668
1669 /* Sliced VBI ioctls */
1670 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1671                                        struct v4l2_format *f)
1672 {
1673         struct cx231xx_fh *fh = priv;
1674         struct cx231xx *dev = fh->dev;
1675         int rc;
1676
1677         rc = check_dev(dev);
1678         if (rc < 0)
1679                 return rc;
1680
1681         mutex_lock(&dev->lock);
1682
1683         f->fmt.sliced.service_set = 0;
1684
1685         call_all(dev, video, g_fmt, f);
1686
1687         if (f->fmt.sliced.service_set == 0)
1688                 rc = -EINVAL;
1689
1690         mutex_unlock(&dev->lock);
1691         return rc;
1692 }
1693
1694 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1695                                          struct v4l2_format *f)
1696 {
1697         struct cx231xx_fh *fh = priv;
1698         struct cx231xx *dev = fh->dev;
1699         int rc;
1700
1701         rc = check_dev(dev);
1702         if (rc < 0)
1703                 return rc;
1704
1705         mutex_lock(&dev->lock);
1706         call_all(dev, video, g_fmt, f);
1707         mutex_unlock(&dev->lock);
1708
1709         if (f->fmt.sliced.service_set == 0)
1710                 return -EINVAL;
1711
1712         return 0;
1713 }
1714
1715 /* RAW VBI ioctls */
1716
1717 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1718                                 struct v4l2_format *f)
1719 {
1720         struct cx231xx_fh *fh = priv;
1721         struct cx231xx *dev = fh->dev;
1722
1723         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1724             35468950 : 28636363;
1725         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1726         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1727         f->fmt.vbi.offset = 64 * 4;
1728         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1729             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1730         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1731             PAL_VBI_LINES : NTSC_VBI_LINES;
1732         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1733             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1734         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1735
1736         return 0;
1737
1738 }
1739
1740 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1741                                   struct v4l2_format *f)
1742 {
1743         struct cx231xx_fh *fh = priv;
1744         struct cx231xx *dev = fh->dev;
1745
1746         if (dev->vbi_stream_on && !fh->stream_on) {
1747                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1748                 return -EBUSY;
1749         }
1750
1751         f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1752         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1753             35468950 : 28636363;
1754         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1755         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1756         f->fmt.vbi.offset = 244;
1757         f->fmt.vbi.flags = 0;
1758         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1759             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1760         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1761             PAL_VBI_LINES : NTSC_VBI_LINES;
1762         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1763             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1764         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1765
1766         return 0;
1767
1768 }
1769
1770 static int vidioc_reqbufs(struct file *file, void *priv,
1771                           struct v4l2_requestbuffers *rb)
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_reqbufs(&fh->vb_vidq, rb);
1782 }
1783
1784 static int vidioc_querybuf(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_querybuf(&fh->vb_vidq, b);
1795 }
1796
1797 static int vidioc_qbuf(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_qbuf(&fh->vb_vidq, b);
1808 }
1809
1810 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1811 {
1812         struct cx231xx_fh *fh = priv;
1813         struct cx231xx *dev = fh->dev;
1814         int rc;
1815
1816         rc = check_dev(dev);
1817         if (rc < 0)
1818                 return rc;
1819
1820         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1821 }
1822
1823 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1824 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1825 {
1826         struct cx231xx_fh *fh = priv;
1827
1828         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1829 }
1830 #endif
1831
1832 /* ----------------------------------------------------------- */
1833 /* RADIO ESPECIFIC IOCTLS                                      */
1834 /* ----------------------------------------------------------- */
1835
1836 static int radio_querycap(struct file *file, void *priv,
1837                           struct v4l2_capability *cap)
1838 {
1839         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1840
1841         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1842         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1843         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1844
1845         cap->version = CX231XX_VERSION_CODE;
1846         cap->capabilities = V4L2_CAP_TUNER;
1847         return 0;
1848 }
1849
1850 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1851 {
1852         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1853
1854         if (unlikely(t->index > 0))
1855                 return -EINVAL;
1856
1857         strcpy(t->name, "Radio");
1858         t->type = V4L2_TUNER_RADIO;
1859
1860         mutex_lock(&dev->lock);
1861         call_all(dev, tuner, s_tuner, t);
1862         mutex_unlock(&dev->lock);
1863
1864         return 0;
1865 }
1866
1867 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1868 {
1869         if (i->index != 0)
1870                 return -EINVAL;
1871         strcpy(i->name, "Radio");
1872         i->type = V4L2_INPUT_TYPE_TUNER;
1873
1874         return 0;
1875 }
1876
1877 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1878 {
1879         if (unlikely(a->index))
1880                 return -EINVAL;
1881
1882         strcpy(a->name, "Radio");
1883         return 0;
1884 }
1885
1886 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1887 {
1888         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1889
1890         if (0 != t->index)
1891                 return -EINVAL;
1892
1893         mutex_lock(&dev->lock);
1894         call_all(dev, tuner, s_tuner, t);
1895         mutex_unlock(&dev->lock);
1896
1897         return 0;
1898 }
1899
1900 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1901 {
1902         return 0;
1903 }
1904
1905 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1906 {
1907         return 0;
1908 }
1909
1910 static int radio_queryctrl(struct file *file, void *priv,
1911                            struct v4l2_queryctrl *c)
1912 {
1913         int i;
1914
1915         if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1916                 return -EINVAL;
1917         if (c->id == V4L2_CID_AUDIO_MUTE) {
1918                 for (i = 0; i < CX231XX_CTLS; i++)
1919                         if (cx231xx_ctls[i].v.id == c->id)
1920                                 break;
1921                 *c = cx231xx_ctls[i].v;
1922         } else
1923                 *c = no_ctl;
1924         return 0;
1925 }
1926
1927 /*
1928  * cx231xx_v4l2_open()
1929  * inits the device and starts isoc transfer
1930  */
1931 static int cx231xx_v4l2_open(struct file *filp)
1932 {
1933         int minor = video_devdata(filp)->minor;
1934         int errCode = 0, radio = 0;
1935         struct cx231xx *dev = NULL;
1936         struct cx231xx_fh *fh;
1937         enum v4l2_buf_type fh_type = 0;
1938
1939         dev = cx231xx_get_device(minor, &fh_type, &radio);
1940         if (NULL == dev)
1941                 return -ENODEV;
1942
1943         mutex_lock(&dev->lock);
1944
1945         cx231xx_videodbg("open minor=%d type=%s users=%d\n",
1946                          minor, v4l2_type_names[fh_type], dev->users);
1947
1948 #if 0
1949         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1950         if (errCode < 0) {
1951                 cx231xx_errdev
1952                     ("Device locked on digital mode. Can't open analog\n");
1953                 mutex_unlock(&dev->lock);
1954                 return -EBUSY;
1955         }
1956 #endif
1957
1958         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1959         if (!fh) {
1960                 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1961                 mutex_unlock(&dev->lock);
1962                 return -ENOMEM;
1963         }
1964         fh->dev = dev;
1965         fh->radio = radio;
1966         fh->type = fh_type;
1967         filp->private_data = fh;
1968
1969         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1970                 dev->width = norm_maxw(dev);
1971                 dev->height = norm_maxh(dev);
1972                 dev->hscale = 0;
1973                 dev->vscale = 0;
1974
1975                 /* Power up in Analog TV mode */
1976                 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1977
1978 #if 0
1979                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1980 #endif
1981                 cx231xx_resolution_set(dev);
1982
1983                 /* set video alternate setting */
1984                 cx231xx_set_video_alternate(dev);
1985
1986                 /* Needed, since GPIO might have disabled power of
1987                    some i2c device */
1988                 cx231xx_config_i2c(dev);
1989
1990                 /* device needs to be initialized before isoc transfer */
1991                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1992                 video_mux(dev, dev->video_input);
1993
1994         }
1995         if (fh->radio) {
1996                 cx231xx_videodbg("video_open: setting radio device\n");
1997
1998                 /* cx231xx_start_radio(dev); */
1999
2000                 call_all(dev, tuner, s_radio);
2001         }
2002
2003         dev->users++;
2004
2005         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2006                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2007                                             NULL, &dev->video_mode.slock,
2008                                             fh->type, V4L2_FIELD_INTERLACED,
2009                                             sizeof(struct cx231xx_buffer), fh);
2010         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2011                 /* Set the required alternate setting  VBI interface works in
2012                    Bulk mode only */
2013                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2014
2015                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2016                                             NULL, &dev->vbi_mode.slock,
2017                                             fh->type, V4L2_FIELD_SEQ_TB,
2018                                             sizeof(struct cx231xx_buffer), fh);
2019         }
2020
2021         mutex_unlock(&dev->lock);
2022
2023         return errCode;
2024 }
2025
2026 /*
2027  * cx231xx_realease_resources()
2028  * unregisters the v4l2,i2c and usb devices
2029  * called when the device gets disconected or at module unload
2030 */
2031 void cx231xx_release_analog_resources(struct cx231xx *dev)
2032 {
2033
2034         /*FIXME: I2C IR should be disconnected */
2035
2036         if (dev->radio_dev) {
2037                 if (-1 != dev->radio_dev->minor)
2038                         video_unregister_device(dev->radio_dev);
2039                 else
2040                         video_device_release(dev->radio_dev);
2041                 dev->radio_dev = NULL;
2042         }
2043         if (dev->vbi_dev) {
2044                 cx231xx_info("V4L2 device /dev/vbi%d deregistered\n",
2045                              dev->vbi_dev->num);
2046                 if (-1 != dev->vbi_dev->minor)
2047                         video_unregister_device(dev->vbi_dev);
2048                 else
2049                         video_device_release(dev->vbi_dev);
2050                 dev->vbi_dev = NULL;
2051         }
2052         if (dev->vdev) {
2053                 cx231xx_info("V4L2 device /dev/video%d deregistered\n",
2054                              dev->vdev->num);
2055                 if (-1 != dev->vdev->minor)
2056                         video_unregister_device(dev->vdev);
2057                 else
2058                         video_device_release(dev->vdev);
2059                 dev->vdev = NULL;
2060         }
2061 }
2062
2063 /*
2064  * cx231xx_v4l2_close()
2065  * stops streaming and deallocates all resources allocated by the v4l2
2066  * calls and ioctls
2067  */
2068 static int cx231xx_v4l2_close(struct file *filp)
2069 {
2070         struct cx231xx_fh *fh = filp->private_data;
2071         struct cx231xx *dev = fh->dev;
2072
2073         cx231xx_videodbg("users=%d\n", dev->users);
2074
2075         mutex_lock(&dev->lock);
2076
2077         if (res_check(fh))
2078                 res_free(fh);
2079
2080         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2081                 videobuf_stop(&fh->vb_vidq);
2082                 videobuf_mmap_free(&fh->vb_vidq);
2083
2084                 /* the device is already disconnect,
2085                    free the remaining resources */
2086                 if (dev->state & DEV_DISCONNECTED) {
2087                         cx231xx_release_resources(dev);
2088                         mutex_unlock(&dev->lock);
2089                         kfree(dev);
2090                         return 0;
2091                 }
2092
2093                 /* do this before setting alternate! */
2094                 cx231xx_uninit_vbi_isoc(dev);
2095
2096                 /* set alternate 0 */
2097                 if (!dev->vbi_or_sliced_cc_mode)
2098                         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2099                 else
2100                         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2101
2102                 kfree(fh);
2103                 dev->users--;
2104                 wake_up_interruptible_nr(&dev->open, 1);
2105                 mutex_unlock(&dev->lock);
2106                 return 0;
2107         }
2108
2109         if (dev->users == 1) {
2110                 videobuf_stop(&fh->vb_vidq);
2111                 videobuf_mmap_free(&fh->vb_vidq);
2112
2113                 /* the device is already disconnect,
2114                    free the remaining resources */
2115                 if (dev->state & DEV_DISCONNECTED) {
2116                         cx231xx_release_resources(dev);
2117                         mutex_unlock(&dev->lock);
2118                         kfree(dev);
2119                         return 0;
2120                 }
2121
2122                 /* Save some power by putting tuner to sleep */
2123                 call_all(dev, tuner, s_standby);
2124
2125                 /* do this before setting alternate! */
2126                 cx231xx_uninit_isoc(dev);
2127                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2128
2129                 /* set alternate 0 */
2130                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2131         }
2132         kfree(fh);
2133         dev->users--;
2134         wake_up_interruptible_nr(&dev->open, 1);
2135         mutex_unlock(&dev->lock);
2136         return 0;
2137 }
2138
2139 /*
2140  * cx231xx_v4l2_read()
2141  * will allocate buffers when called for the first time
2142  */
2143 static ssize_t
2144 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2145                   loff_t *pos)
2146 {
2147         struct cx231xx_fh *fh = filp->private_data;
2148         struct cx231xx *dev = fh->dev;
2149         int rc;
2150
2151         rc = check_dev(dev);
2152         if (rc < 0)
2153                 return rc;
2154
2155         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2156             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2157                 mutex_lock(&dev->lock);
2158                 rc = res_get(fh);
2159                 mutex_unlock(&dev->lock);
2160
2161                 if (unlikely(rc < 0))
2162                         return rc;
2163
2164                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2165                                             filp->f_flags & O_NONBLOCK);
2166         }
2167         return 0;
2168 }
2169
2170 /*
2171  * cx231xx_v4l2_poll()
2172  * will allocate buffers when called for the first time
2173  */
2174 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2175 {
2176         struct cx231xx_fh *fh = filp->private_data;
2177         struct cx231xx *dev = fh->dev;
2178         int rc;
2179
2180         rc = check_dev(dev);
2181         if (rc < 0)
2182                 return rc;
2183
2184         mutex_lock(&dev->lock);
2185         rc = res_get(fh);
2186         mutex_unlock(&dev->lock);
2187
2188         if (unlikely(rc < 0))
2189                 return POLLERR;
2190
2191         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2192             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2193                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2194         else
2195                 return POLLERR;
2196 }
2197
2198 /*
2199  * cx231xx_v4l2_mmap()
2200  */
2201 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2202 {
2203         struct cx231xx_fh *fh = filp->private_data;
2204         struct cx231xx *dev = fh->dev;
2205         int rc;
2206
2207         rc = check_dev(dev);
2208         if (rc < 0)
2209                 return rc;
2210
2211         mutex_lock(&dev->lock);
2212         rc = res_get(fh);
2213         mutex_unlock(&dev->lock);
2214
2215         if (unlikely(rc < 0))
2216                 return rc;
2217
2218         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2219
2220         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2221                          (unsigned long)vma->vm_start,
2222                          (unsigned long)vma->vm_end -
2223                          (unsigned long)vma->vm_start, rc);
2224
2225         return rc;
2226 }
2227
2228 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2229         .owner   = THIS_MODULE,
2230         .open    = cx231xx_v4l2_open,
2231         .release = cx231xx_v4l2_close,
2232         .read    = cx231xx_v4l2_read,
2233         .poll    = cx231xx_v4l2_poll,
2234         .mmap    = cx231xx_v4l2_mmap,
2235         .ioctl   = video_ioctl2,
2236 };
2237
2238 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2239         .vidioc_querycap               = vidioc_querycap,
2240         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2241         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2242         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2243         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2244         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2245         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2246         .vidioc_s_fmt_vbi_cap          = vidioc_try_fmt_vbi_cap,
2247         .vidioc_g_audio                =  vidioc_g_audio,
2248         .vidioc_s_audio                = vidioc_s_audio,
2249         .vidioc_cropcap                = vidioc_cropcap,
2250         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2251         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2252         .vidioc_reqbufs                = vidioc_reqbufs,
2253         .vidioc_querybuf               = vidioc_querybuf,
2254         .vidioc_qbuf                   = vidioc_qbuf,
2255         .vidioc_dqbuf                  = vidioc_dqbuf,
2256         .vidioc_s_std                  = vidioc_s_std,
2257         .vidioc_g_std                  = vidioc_g_std,
2258         .vidioc_enum_input             = vidioc_enum_input,
2259         .vidioc_g_input                = vidioc_g_input,
2260         .vidioc_s_input                = vidioc_s_input,
2261         .vidioc_queryctrl              = vidioc_queryctrl,
2262         .vidioc_g_ctrl                 = vidioc_g_ctrl,
2263         .vidioc_s_ctrl                 = vidioc_s_ctrl,
2264         .vidioc_streamon               = vidioc_streamon,
2265         .vidioc_streamoff              = vidioc_streamoff,
2266         .vidioc_g_tuner                = vidioc_g_tuner,
2267         .vidioc_s_tuner                = vidioc_s_tuner,
2268         .vidioc_g_frequency            = vidioc_g_frequency,
2269         .vidioc_s_frequency            = vidioc_s_frequency,
2270 #ifdef CONFIG_VIDEO_ADV_DEBUG
2271         .vidioc_g_register             = vidioc_g_register,
2272         .vidioc_s_register             = vidioc_s_register,
2273 #endif
2274 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2275         .vidiocgmbuf                   = vidiocgmbuf,
2276 #endif
2277 };
2278
2279 static struct video_device cx231xx_vbi_template;
2280
2281 static const struct video_device cx231xx_video_template = {
2282         .fops         = &cx231xx_v4l_fops,
2283         .release      = video_device_release,
2284         .ioctl_ops    = &video_ioctl_ops,
2285         .minor        = -1,
2286         .tvnorms      = V4L2_STD_ALL,
2287         .current_norm = V4L2_STD_PAL,
2288 };
2289
2290 static const struct v4l2_file_operations radio_fops = {
2291         .owner   = THIS_MODULE,
2292         .open   = cx231xx_v4l2_open,
2293         .release = cx231xx_v4l2_close,
2294         .ioctl   = video_ioctl2,
2295 };
2296
2297 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2298         .vidioc_querycap    = radio_querycap,
2299         .vidioc_g_tuner     = radio_g_tuner,
2300         .vidioc_enum_input  = radio_enum_input,
2301         .vidioc_g_audio     = radio_g_audio,
2302         .vidioc_s_tuner     = radio_s_tuner,
2303         .vidioc_s_audio     = radio_s_audio,
2304         .vidioc_s_input     = radio_s_input,
2305         .vidioc_queryctrl   = radio_queryctrl,
2306         .vidioc_g_ctrl      = vidioc_g_ctrl,
2307         .vidioc_s_ctrl      = vidioc_s_ctrl,
2308         .vidioc_g_frequency = vidioc_g_frequency,
2309         .vidioc_s_frequency = vidioc_s_frequency,
2310 #ifdef CONFIG_VIDEO_ADV_DEBUG
2311         .vidioc_g_register  = vidioc_g_register,
2312         .vidioc_s_register  = vidioc_s_register,
2313 #endif
2314 };
2315
2316 static struct video_device cx231xx_radio_template = {
2317         .name      = "cx231xx-radio",
2318         .fops      = &radio_fops,
2319         .ioctl_ops = &radio_ioctl_ops,
2320         .minor     = -1,
2321 };
2322
2323 /******************************** usb interface ******************************/
2324
2325 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
2326                 const struct video_device
2327                 *template, const char *type_name)
2328 {
2329         struct video_device *vfd;
2330
2331         vfd = video_device_alloc();
2332         if (NULL == vfd)
2333                 return NULL;
2334
2335         *vfd = *template;
2336         vfd->minor = -1;
2337         vfd->v4l2_dev = &dev->v4l2_dev;
2338         vfd->release = video_device_release;
2339         vfd->debug = video_debug;
2340
2341         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2342
2343         return vfd;
2344 }
2345
2346 int cx231xx_register_analog_devices(struct cx231xx *dev)
2347 {
2348         int ret;
2349
2350         cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2351                      dev->name,
2352                      (CX231XX_VERSION_CODE >> 16) & 0xff,
2353                      (CX231XX_VERSION_CODE >> 8) & 0xff,
2354                      CX231XX_VERSION_CODE & 0xff);
2355
2356         /* set default norm */
2357         /*dev->norm = cx231xx_video_template.current_norm; */
2358         dev->width = norm_maxw(dev);
2359         dev->height = norm_maxh(dev);
2360         dev->interlaced = 0;
2361         dev->hscale = 0;
2362         dev->vscale = 0;
2363
2364         /* Analog specific initialization */
2365         dev->format = &format[0];
2366         /* video_mux(dev, dev->video_input); */
2367
2368         /* Audio defaults */
2369         dev->mute = 1;
2370         dev->volume = 0x1f;
2371
2372         /* enable vbi capturing */
2373         /* write code here...  */
2374
2375         /* allocate and fill video video_device struct */
2376         dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2377         if (!dev->vdev) {
2378                 cx231xx_errdev("cannot allocate video_device.\n");
2379                 return -ENODEV;
2380         }
2381
2382         /* register v4l2 video video_device */
2383         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2384                                     video_nr[dev->devno]);
2385         if (ret) {
2386                 cx231xx_errdev("unable to register video device (error=%i).\n",
2387                                ret);
2388                 return ret;
2389         }
2390
2391         cx231xx_info("%s/0: registered device video%d [v4l2]\n",
2392                      dev->name, dev->vdev->num);
2393
2394         /* Initialize VBI template */
2395         memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2396                sizeof(cx231xx_vbi_template));
2397         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2398
2399         /* Allocate and fill vbi video_device struct */
2400         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2401
2402         /* register v4l2 vbi video_device */
2403         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2404                                     vbi_nr[dev->devno]);
2405         if (ret < 0) {
2406                 cx231xx_errdev("unable to register vbi device\n");
2407                 return ret;
2408         }
2409
2410         cx231xx_info("%s/0: registered device vbi%d\n",
2411                      dev->name, dev->vbi_dev->num);
2412
2413         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2414                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2415                                                    "radio");
2416                 if (!dev->radio_dev) {
2417                         cx231xx_errdev("cannot allocate video_device.\n");
2418                         return -ENODEV;
2419                 }
2420                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2421                                             radio_nr[dev->devno]);
2422                 if (ret < 0) {
2423                         cx231xx_errdev("can't register radio device\n");
2424                         return ret;
2425                 }
2426                 cx231xx_info("Registered radio device as /dev/radio%d\n",
2427                              dev->radio_dev->num);
2428         }
2429
2430         cx231xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2431                      dev->vdev->num, dev->vbi_dev->num);
2432
2433         return 0;
2434 }