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

   1 /*
   2    cx231xx-video.c - driver for Conexant Cx23100/101/102
   3                      USB video capture devices
   4
   5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   6         Based on em28xx driver
   7         Based on cx23885 driver
   8         Based on cx88 driver
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include "cx231xx.h"
  26 #include <linux/init.h>
  27 #include <linux/list.h>
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/bitmap.h>
  31 #include <linux/i2c.h>
  32 #include <linux/mm.h>
  33 #include <linux/mutex.h>
  34 #include <linux/slab.h>
  35
  36 #include <media/v4l2-common.h>
  37 #include <media/v4l2-ioctl.h>
  38 #include <media/v4l2-event.h>
  39 #include <media/msp3400.h>
  40 #include <media/tuner.h>
  41
  42 #include "dvb_frontend.h"
  43
  44 #include "cx231xx-vbi.h"
  45
  46 #define CX231XX_VERSION "0.0.3"
  47
  48 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  49 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  50
  51 #define cx231xx_videodbg(fmt, arg...) do {\
  52         if (video_debug) \
  53                 printk(KERN_INFO "%s %s :"fmt, \
  54                          dev->name, __func__ , ##arg); } while (0)
  55
  56 static unsigned int isoc_debug;
  57 module_param(isoc_debug, int, 0644);
  58 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  59
  60 #define cx231xx_isocdbg(fmt, arg...) \
  61 do {\
  62         if (isoc_debug) { \
  63                 printk(KERN_INFO "%s %s :"fmt, \
  64                          dev->name, __func__ , ##arg); \
  65         } \
  66   } while (0)
  67
  68 MODULE_AUTHOR(DRIVER_AUTHOR);
  69 MODULE_DESCRIPTION(DRIVER_DESC);
  70 MODULE_LICENSE("GPL");
  71 MODULE_VERSION(CX231XX_VERSION);
  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
 103 static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
 104 {
 105 #ifdef CONFIG_MEDIA_CONTROLLER
 106         struct media_device *mdev = dev->media_dev;
 107         struct media_entity  *entity, *decoder = NULL, *source;
 108         struct media_link *link, *found_link = NULL;
 109         int i, ret, active_links = 0;
 110
 111         if (!mdev)
 112                 return 0;
 113
 114         /*
 115          * This will find the tuner that is connected into the decoder.
 116          * Technically, this is not 100% correct, as the device may be
 117          * using an analog input instead of the tuner. However, as we can't
 118          * do DVB streaming while the DMA engine is being used for V4L2,
 119          * this should be enough for the actual needs.
 120          */
 121         media_device_for_each_entity(entity, mdev) {
 122                 if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) {
 123                         decoder = entity;
 124                         break;
 125                 }
 126         }
 127         if (!decoder)
 128                 return 0;
 129
 130         for (i = 0; i < decoder->num_links; i++) {
 131                 link = &decoder->links[i];
 132                 if (link->sink->entity == decoder) {
 133                         found_link = link;
 134                         if (link->flags & MEDIA_LNK_FL_ENABLED)
 135                                 active_links++;
 136                         break;
 137                 }
 138         }
 139
 140         if (active_links == 1 || !found_link)
 141                 return 0;
 142
 143         source = found_link->source->entity;
 144         for (i = 0; i < source->num_links; i++) {
 145                 struct media_entity *sink;
 146                 int flags = 0;
 147
 148                 link = &source->links[i];
 149                 sink = link->sink->entity;
 150
 151                 if (sink == entity)
 152                         flags = MEDIA_LNK_FL_ENABLED;
 153
 154                 ret = media_entity_setup_link(link, flags);
 155                 if (ret) {
 156                         dev_err(dev->dev,
 157                                 "Couldn't change link %s->%s to %s. Error %d\n",
 158                                 source->name, sink->name,
 159                                 flags ? "enabled" : "disabled",
 160                                 ret);
 161                         return ret;
 162                 } else
 163                         dev_dbg(dev->dev,
 164                                 "link %s->%s was %s\n",
 165                                 source->name, sink->name,
 166                                 flags ? "ENABLED" : "disabled");
 167         }
 168 #endif
 169         return 0;
 170 }
 171
 172 /* ------------------------------------------------------------------
 173         Video buffer and parser functions
 174    ------------------------------------------------------------------*/
 175
 176 /*
 177  * Announces that a buffer were filled and request the next
 178  */
 179 static inline void buffer_filled(struct cx231xx *dev,
 180                                  struct cx231xx_dmaqueue *dma_q,
 181                                  struct cx231xx_buffer *buf)
 182 {
 183         /* Advice that buffer was filled */
 184         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 185         buf->vb.state = VIDEOBUF_DONE;
 186         buf->vb.field_count++;
 187         v4l2_get_timestamp(&buf->vb.ts);
 188
 189         if (dev->USE_ISO)
 190                 dev->video_mode.isoc_ctl.buf = NULL;
 191         else
 192                 dev->video_mode.bulk_ctl.buf = NULL;
 193
 194         list_del(&buf->vb.queue);
 195         wake_up(&buf->vb.done);
 196 }
 197
 198 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 199 {
 200         char *errmsg = "Unknown";
 201
 202         switch (status) {
 203         case -ENOENT:
 204                 errmsg = "unlinked synchronuously";
 205                 break;
 206         case -ECONNRESET:
 207                 errmsg = "unlinked asynchronuously";
 208                 break;
 209         case -ENOSR:
 210                 errmsg = "Buffer error (overrun)";
 211                 break;
 212         case -EPIPE:
 213                 errmsg = "Stalled (device not responding)";
 214                 break;
 215         case -EOVERFLOW:
 216                 errmsg = "Babble (bad cable?)";
 217                 break;
 218         case -EPROTO:
 219                 errmsg = "Bit-stuff error (bad cable?)";
 220                 break;
 221         case -EILSEQ:
 222                 errmsg = "CRC/Timeout (could be anything)";
 223                 break;
 224         case -ETIME:
 225                 errmsg = "Device does not respond";
 226                 break;
 227         }
 228         if (packet < 0) {
 229                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 230         } else {
 231                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 232                                 packet, status, errmsg);
 233         }
 234 }
 235
 236 /*
 237  * video-buf generic routine to get the next available buffer
 238  */
 239 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 240                                 struct cx231xx_buffer **buf)
 241 {
 242         struct cx231xx_video_mode *vmode =
 243             container_of(dma_q, struct cx231xx_video_mode, vidq);
 244         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 245
 246         char *outp;
 247
 248         if (list_empty(&dma_q->active)) {
 249                 cx231xx_isocdbg("No active queue to serve\n");
 250                 if (dev->USE_ISO)
 251                         dev->video_mode.isoc_ctl.buf = NULL;
 252                 else
 253                         dev->video_mode.bulk_ctl.buf = NULL;
 254                 *buf = NULL;
 255                 return;
 256         }
 257
 258         /* Get the next buffer */
 259         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 260
 261         /* Cleans up buffer - Useful for testing for frame/URB loss */
 262         outp = videobuf_to_vmalloc(&(*buf)->vb);
 263         memset(outp, 0, (*buf)->vb.size);
 264
 265         if (dev->USE_ISO)
 266                 dev->video_mode.isoc_ctl.buf = *buf;
 267         else
 268                 dev->video_mode.bulk_ctl.buf = *buf;
 269
 270         return;
 271 }
 272
 273 /*
 274  * Controls the isoc copy of each urb packet
 275  */
 276 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 277 {
 278         struct cx231xx_dmaqueue *dma_q = urb->context;
 279         int i;
 280         unsigned char *p_buffer;
 281         u32 bytes_parsed = 0, buffer_size = 0;
 282         u8 sav_eav = 0;
 283
 284         if (!dev)
 285                 return 0;
 286
 287         if (dev->state & DEV_DISCONNECTED)
 288                 return 0;
 289
 290         if (urb->status < 0) {
 291                 print_err_status(dev, -1, urb->status);
 292                 if (urb->status == -ENOENT)
 293                         return 0;
 294         }
 295
 296         for (i = 0; i < urb->number_of_packets; i++) {
 297                 int status = urb->iso_frame_desc[i].status;
 298
 299                 if (status < 0) {
 300                         print_err_status(dev, i, status);
 301                         if (urb->iso_frame_desc[i].status != -EPROTO)
 302                                 continue;
 303                 }
 304
 305                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 306                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 307                         continue;
 308                 }
 309                 if (urb->iso_frame_desc[i].actual_length >
 310                     dev->video_mode.max_pkt_size) {
 311                         cx231xx_isocdbg("packet bigger than packet size");
 312                         continue;
 313                 }
 314
 315                 /*  get buffer pointer and length */
 316                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 317                 buffer_size = urb->iso_frame_desc[i].actual_length;
 318                 bytes_parsed = 0;
 319
 320                 if (dma_q->is_partial_line) {
 321                         /* Handle the case of a partial line */
 322                         sav_eav = dma_q->last_sav;
 323                 } else {
 324                         /* Check for a SAV/EAV overlapping
 325                                 the buffer boundary */
 326                         sav_eav =
 327                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 328                                                           dma_q->partial_buf,
 329                                                           &bytes_parsed);
 330                 }
 331
 332                 sav_eav &= 0xF0;
 333                 /* Get the first line if we have some portion of an SAV/EAV from
 334                    the last buffer or a partial line  */
 335                 if (sav_eav) {
 336                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 337                                 sav_eav,        /* SAV/EAV */
 338                                 p_buffer + bytes_parsed,        /* p_buffer */
 339                                 buffer_size - bytes_parsed);/* buf size */
 340                 }
 341
 342                 /* Now parse data that is completely in this buffer */
 343                 /* dma_q->is_partial_line = 0;  */
 344
 345                 while (bytes_parsed < buffer_size) {
 346                         u32 bytes_used = 0;
 347
 348                         sav_eav = cx231xx_find_next_SAV_EAV(
 349                                 p_buffer + bytes_parsed,        /* p_buffer */
 350                                 buffer_size - bytes_parsed,     /* buf size */
 351                                 &bytes_used);/* bytes used to get SAV/EAV */
 352
 353                         bytes_parsed += bytes_used;
 354
 355                         sav_eav &= 0xF0;
 356                         if (sav_eav && (bytes_parsed < buffer_size)) {
 357                                 bytes_parsed += cx231xx_get_video_line(dev,
 358                                         dma_q, sav_eav, /* SAV/EAV */
 359                                         p_buffer + bytes_parsed,/* p_buffer */
 360                                         buffer_size - bytes_parsed);/*buf size*/
 361                         }
 362                 }
 363
 364                 /* Save the last four bytes of the buffer so we can check the
 365                    buffer boundary condition next time */
 366                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 367                 bytes_parsed = 0;
 368
 369         }
 370         return 1;
 371 }
 372
 373 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 374 {
 375         struct cx231xx_dmaqueue *dma_q = urb->context;
 376         unsigned char *p_buffer;
 377         u32 bytes_parsed = 0, buffer_size = 0;
 378         u8 sav_eav = 0;
 379
 380         if (!dev)
 381                 return 0;
 382
 383         if (dev->state & DEV_DISCONNECTED)
 384                 return 0;
 385
 386         if (urb->status < 0) {
 387                 print_err_status(dev, -1, urb->status);
 388                 if (urb->status == -ENOENT)
 389                         return 0;
 390         }
 391
 392         if (1) {
 393
 394                 /*  get buffer pointer and length */
 395                 p_buffer = urb->transfer_buffer;
 396                 buffer_size = urb->actual_length;
 397                 bytes_parsed = 0;
 398
 399                 if (dma_q->is_partial_line) {
 400                         /* Handle the case of a partial line */
 401                         sav_eav = dma_q->last_sav;
 402                 } else {
 403                         /* Check for a SAV/EAV overlapping
 404                                 the buffer boundary */
 405                         sav_eav =
 406                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 407                                                           dma_q->partial_buf,
 408                                                           &bytes_parsed);
 409                 }
 410
 411                 sav_eav &= 0xF0;
 412                 /* Get the first line if we have some portion of an SAV/EAV from
 413                    the last buffer or a partial line  */
 414                 if (sav_eav) {
 415                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 416                                 sav_eav,        /* SAV/EAV */
 417                                 p_buffer + bytes_parsed,        /* p_buffer */
 418                                 buffer_size - bytes_parsed);/* buf size */
 419                 }
 420
 421                 /* Now parse data that is completely in this buffer */
 422                 /* dma_q->is_partial_line = 0;  */
 423
 424                 while (bytes_parsed < buffer_size) {
 425                         u32 bytes_used = 0;
 426
 427                         sav_eav = cx231xx_find_next_SAV_EAV(
 428                                 p_buffer + bytes_parsed,        /* p_buffer */
 429                                 buffer_size - bytes_parsed,     /* buf size */
 430                                 &bytes_used);/* bytes used to get SAV/EAV */
 431
 432                         bytes_parsed += bytes_used;
 433
 434                         sav_eav &= 0xF0;
 435                         if (sav_eav && (bytes_parsed < buffer_size)) {
 436                                 bytes_parsed += cx231xx_get_video_line(dev,
 437                                         dma_q, sav_eav, /* SAV/EAV */
 438                                         p_buffer + bytes_parsed,/* p_buffer */
 439                                         buffer_size - bytes_parsed);/*buf size*/
 440                         }
 441                 }
 442
 443                 /* Save the last four bytes of the buffer so we can check the
 444                    buffer boundary condition next time */
 445                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 446                 bytes_parsed = 0;
 447
 448         }
 449         return 1;
 450 }
 451
 452
 453 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 454                                  u32 *p_bytes_used)
 455 {
 456         u32 bytes_used;
 457         u8 boundary_bytes[8];
 458         u8 sav_eav = 0;
 459
 460         *p_bytes_used = 0;
 461
 462         /* Create an array of the last 4 bytes of the last buffer and the first
 463            4 bytes of the current buffer. */
 464
 465         memcpy(boundary_bytes, partial_buf, 4);
 466         memcpy(boundary_bytes + 4, p_buffer, 4);
 467
 468         /* Check for the SAV/EAV in the boundary buffer */
 469         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 470                                             &bytes_used);
 471
 472         if (sav_eav) {
 473                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 474                    only those used in the new buffer */
 475                 *p_bytes_used = bytes_used - 4;
 476         }
 477
 478         return sav_eav;
 479 }
 480
 481 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 482 {
 483         u32 i;
 484         u8 sav_eav = 0;
 485
 486         /*
 487          * Don't search if the buffer size is less than 4.  It causes a page
 488          * fault since buffer_size - 4 evaluates to a large number in that
 489          * case.
 490          */
 491         if (buffer_size < 4) {
 492                 *p_bytes_used = buffer_size;
 493                 return 0;
 494         }
 495
 496         for (i = 0; i < (buffer_size - 3); i++) {
 497
 498                 if ((p_buffer[i] == 0xFF) &&
 499                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 500
 501                         *p_bytes_used = i + 4;
 502                         sav_eav = p_buffer[i + 3];
 503                         return sav_eav;
 504                 }
 505         }
 506
 507         *p_bytes_used = buffer_size;
 508         return 0;
 509 }
 510
 511 u32 cx231xx_get_video_line(struct cx231xx *dev,
 512                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 513                            u8 *p_buffer, u32 buffer_size)
 514 {
 515         u32 bytes_copied = 0;
 516         int current_field = -1;
 517
 518         switch (sav_eav) {
 519         case SAV_ACTIVE_VIDEO_FIELD1:
 520                 /* looking for skipped line which occurred in PAL 720x480 mode.
 521                    In this case, there will be no active data contained
 522                    between the SAV and EAV */
 523                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 524                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 525                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 526                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 527                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 528                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 529                         return bytes_copied;
 530                 current_field = 1;
 531                 break;
 532
 533         case SAV_ACTIVE_VIDEO_FIELD2:
 534                 /* looking for skipped line which occurred in PAL 720x480 mode.
 535                    In this case, there will be no active data contained between
 536                    the SAV and EAV */
 537                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 538                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 539                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 540                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 541                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 542                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 543                         return bytes_copied;
 544                 current_field = 2;
 545                 break;
 546         }
 547
 548         dma_q->last_sav = sav_eav;
 549
 550         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 551                                                buffer_size, current_field);
 552
 553         return bytes_copied;
 554 }
 555
 556 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 557                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 558                             u32 length, int field_number)
 559 {
 560         u32 bytes_to_copy;
 561         struct cx231xx_buffer *buf;
 562         u32 _line_size = dev->width * 2;
 563
 564         if (dma_q->current_field != field_number)
 565                 cx231xx_reset_video_buffer(dev, dma_q);
 566
 567         /* get the buffer pointer */
 568         if (dev->USE_ISO)
 569                 buf = dev->video_mode.isoc_ctl.buf;
 570         else
 571                 buf = dev->video_mode.bulk_ctl.buf;
 572
 573         /* Remember the field number for next time */
 574         dma_q->current_field = field_number;
 575
 576         bytes_to_copy = dma_q->bytes_left_in_line;
 577         if (bytes_to_copy > length)
 578                 bytes_to_copy = length;
 579
 580         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 581                 dma_q->bytes_left_in_line -= bytes_to_copy;
 582                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 583                                           0 : 1;
 584                 return 0;
 585         }
 586
 587         dma_q->is_partial_line = 1;
 588
 589         /* If we don't have a buffer, just return the number of bytes we would
 590            have copied if we had a buffer. */
 591         if (!buf) {
 592                 dma_q->bytes_left_in_line -= bytes_to_copy;
 593                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 594                                          ? 0 : 1;
 595                 return bytes_to_copy;
 596         }
 597
 598         /* copy the data to video buffer */
 599         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 600
 601         dma_q->pos += bytes_to_copy;
 602         dma_q->bytes_left_in_line -= bytes_to_copy;
 603
 604         if (dma_q->bytes_left_in_line == 0) {
 605                 dma_q->bytes_left_in_line = _line_size;
 606                 dma_q->lines_completed++;
 607                 dma_q->is_partial_line = 0;
 608
 609                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 610                         buffer_filled(dev, dma_q, buf);
 611
 612                         dma_q->pos = 0;
 613                         buf = NULL;
 614                         dma_q->lines_completed = 0;
 615                 }
 616         }
 617
 618         return bytes_to_copy;
 619 }
 620
 621 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 622                                 struct cx231xx_dmaqueue *dma_q)
 623 {
 624         struct cx231xx_buffer *buf;
 625
 626         /* handle the switch from field 1 to field 2 */
 627         if (dma_q->current_field == 1) {
 628                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 629                         dma_q->field1_done = 1;
 630                 else
 631                         dma_q->field1_done = 0;
 632         }
 633
 634         if (dev->USE_ISO)
 635                 buf = dev->video_mode.isoc_ctl.buf;
 636         else
 637                 buf = dev->video_mode.bulk_ctl.buf;
 638
 639         if (buf == NULL) {
 640                 /* first try to get the buffer */
 641                 get_next_buf(dma_q, &buf);
 642
 643                 dma_q->pos = 0;
 644                 dma_q->field1_done = 0;
 645                 dma_q->current_field = -1;
 646         }
 647
 648         /* reset the counters */
 649         dma_q->bytes_left_in_line = dev->width << 1;
 650         dma_q->lines_completed = 0;
 651 }
 652
 653 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 654                     u8 *p_buffer, u32 bytes_to_copy)
 655 {
 656         u8 *p_out_buffer = NULL;
 657         u32 current_line_bytes_copied = 0;
 658         struct cx231xx_buffer *buf;
 659         u32 _line_size = dev->width << 1;
 660         void *startwrite;
 661         int offset, lencopy;
 662
 663         if (dev->USE_ISO)
 664                 buf = dev->video_mode.isoc_ctl.buf;
 665         else
 666                 buf = dev->video_mode.bulk_ctl.buf;
 667
 668         if (buf == NULL)
 669                 return -1;
 670
 671         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 672
 673         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 674
 675         /* Offset field 2 one line from the top of the buffer */
 676         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 677
 678         /* Offset for field 2 */
 679         startwrite = p_out_buffer + offset;
 680
 681         /* lines already completed in the current field */
 682         startwrite += (dma_q->lines_completed * _line_size * 2);
 683
 684         /* bytes already completed in the current line */
 685         startwrite += current_line_bytes_copied;
 686
 687         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 688                   bytes_to_copy : dma_q->bytes_left_in_line;
 689
 690         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 691                 return 0;
 692
 693         /* The below copies the UYVY data straight into video buffer */
 694         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 695
 696         return 0;
 697 }
 698
 699 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 700 {
 701         u16 i;
 702
 703         if (len <= 0)
 704                 return;
 705
 706         for (i = 0; i < len / 2; i++)
 707                 to[i] = (from[i] << 8) | (from[i] >> 8);
 708 }
 709
 710 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 711 {
 712         u8 buffer_complete = 0;
 713
 714         /* Dual field stream */
 715         buffer_complete = ((dma_q->current_field == 2) &&
 716                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 717                             dma_q->field1_done);
 718
 719         return buffer_complete;
 720 }
 721
 722 /* ------------------------------------------------------------------
 723         Videobuf operations
 724    ------------------------------------------------------------------*/
 725
 726 static int
 727 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 728 {
 729         struct cx231xx_fh *fh = vq->priv_data;
 730         struct cx231xx *dev = fh->dev;
 731
 732         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 733         if (0 == *count)
 734                 *count = CX231XX_DEF_BUF;
 735
 736         if (*count < CX231XX_MIN_BUF)
 737                 *count = CX231XX_MIN_BUF;
 738
 739
 740         cx231xx_enable_analog_tuner(dev);
 741
 742         return 0;
 743 }
 744
 745 /* This is called *without* dev->slock held; please keep it that way */
 746 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 747 {
 748         struct cx231xx_fh *fh = vq->priv_data;
 749         struct cx231xx *dev = fh->dev;
 750         unsigned long flags = 0;
 751
 752         if (in_interrupt())
 753                 BUG();
 754
 755         /* We used to wait for the buffer to finish here, but this didn't work
 756            because, as we were keeping the state as VIDEOBUF_QUEUED,
 757            videobuf_queue_cancel marked it as finished for us.
 758            (Also, it could wedge forever if the hardware was misconfigured.)
 759
 760            This should be safe; by the time we get here, the buffer isn't
 761            queued anymore. If we ever start marking the buffers as
 762            VIDEOBUF_ACTIVE, it won't be, though.
 763          */
 764         spin_lock_irqsave(&dev->video_mode.slock, flags);
 765         if (dev->USE_ISO) {
 766                 if (dev->video_mode.isoc_ctl.buf == buf)
 767                         dev->video_mode.isoc_ctl.buf = NULL;
 768         } else {
 769                 if (dev->video_mode.bulk_ctl.buf == buf)
 770                         dev->video_mode.bulk_ctl.buf = NULL;
 771         }
 772         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 773
 774         videobuf_vmalloc_free(&buf->vb);
 775         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 776 }
 777
 778 static int
 779 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 780                enum v4l2_field field)
 781 {
 782         struct cx231xx_fh *fh = vq->priv_data;
 783         struct cx231xx_buffer *buf =
 784             container_of(vb, struct cx231xx_buffer, vb);
 785         struct cx231xx *dev = fh->dev;
 786         int rc = 0, urb_init = 0;
 787
 788         /* The only currently supported format is 16 bits/pixel */
 789         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 790                         + 7) >> 3;
 791         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 792                 return -EINVAL;
 793
 794         buf->vb.width = dev->width;
 795         buf->vb.height = dev->height;
 796         buf->vb.field = field;
 797
 798         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 799                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 800                 if (rc < 0)
 801                         goto fail;
 802         }
 803
 804         if (dev->USE_ISO) {
 805                 if (!dev->video_mode.isoc_ctl.num_bufs)
 806                         urb_init = 1;
 807         } else {
 808                 if (!dev->video_mode.bulk_ctl.num_bufs)
 809                         urb_init = 1;
 810         }
 811         dev_dbg(dev->dev,
 812                 "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 813                 urb_init, dev->video_mode.max_pkt_size);
 814         if (urb_init) {
 815                 dev->mode_tv = 0;
 816                 if (dev->USE_ISO)
 817                         rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 818                                        CX231XX_NUM_BUFS,
 819                                        dev->video_mode.max_pkt_size,
 820                                        cx231xx_isoc_copy);
 821                 else
 822                         rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 823                                        CX231XX_NUM_BUFS,
 824                                        dev->video_mode.max_pkt_size,
 825                                        cx231xx_bulk_copy);
 826                 if (rc < 0)
 827                         goto fail;
 828         }
 829
 830         buf->vb.state = VIDEOBUF_PREPARED;
 831
 832         return 0;
 833
 834 fail:
 835         free_buffer(vq, buf);
 836         return rc;
 837 }
 838
 839 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 840 {
 841         struct cx231xx_buffer *buf =
 842             container_of(vb, struct cx231xx_buffer, vb);
 843         struct cx231xx_fh *fh = vq->priv_data;
 844         struct cx231xx *dev = fh->dev;
 845         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 846
 847         buf->vb.state = VIDEOBUF_QUEUED;
 848         list_add_tail(&buf->vb.queue, &vidq->active);
 849
 850 }
 851
 852 static void buffer_release(struct videobuf_queue *vq,
 853                            struct videobuf_buffer *vb)
 854 {
 855         struct cx231xx_buffer *buf =
 856             container_of(vb, struct cx231xx_buffer, vb);
 857         struct cx231xx_fh *fh = vq->priv_data;
 858         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 859
 860         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 861
 862         free_buffer(vq, buf);
 863 }
 864
 865 static struct videobuf_queue_ops cx231xx_video_qops = {
 866         .buf_setup = buffer_setup,
 867         .buf_prepare = buffer_prepare,
 868         .buf_queue = buffer_queue,
 869         .buf_release = buffer_release,
 870 };
 871
 872 /*********************  v4l2 interface  **************************************/
 873
 874 void video_mux(struct cx231xx *dev, int index)
 875 {
 876         dev->video_input = index;
 877         dev->ctl_ainput = INPUT(index)->amux;
 878
 879         cx231xx_set_video_input_mux(dev, index);
 880
 881         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 882
 883         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 884
 885         dev_dbg(dev->dev, "video_mux : %d\n", index);
 886
 887         /* do mode control overrides if required */
 888         cx231xx_do_mode_ctrl_overrides(dev);
 889 }
 890
 891 /* Usage lock check functions */
 892 static int res_get(struct cx231xx_fh *fh)
 893 {
 894         struct cx231xx *dev = fh->dev;
 895         int rc = 0;
 896
 897         /* This instance already has stream_on */
 898         if (fh->stream_on)
 899                 return rc;
 900
 901         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 902                 if (dev->stream_on)
 903                         return -EBUSY;
 904                 dev->stream_on = 1;
 905         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 906                 if (dev->vbi_stream_on)
 907                         return -EBUSY;
 908                 dev->vbi_stream_on = 1;
 909         } else
 910                 return -EINVAL;
 911
 912         fh->stream_on = 1;
 913
 914         return rc;
 915 }
 916
 917 static int res_check(struct cx231xx_fh *fh)
 918 {
 919         return fh->stream_on;
 920 }
 921
 922 static void res_free(struct cx231xx_fh *fh)
 923 {
 924         struct cx231xx *dev = fh->dev;
 925
 926         fh->stream_on = 0;
 927
 928         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 929                 dev->stream_on = 0;
 930         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 931                 dev->vbi_stream_on = 0;
 932 }
 933
 934 static int check_dev(struct cx231xx *dev)
 935 {
 936         if (dev->state & DEV_DISCONNECTED) {
 937                 dev_err(dev->dev, "v4l2 ioctl: device not present\n");
 938                 return -ENODEV;
 939         }
 940         return 0;
 941 }
 942
 943 /* ------------------------------------------------------------------
 944         IOCTL vidioc handling
 945    ------------------------------------------------------------------*/
 946
 947 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 948                                 struct v4l2_format *f)
 949 {
 950         struct cx231xx_fh *fh = priv;
 951         struct cx231xx *dev = fh->dev;
 952
 953         f->fmt.pix.width = dev->width;
 954         f->fmt.pix.height = dev->height;
 955         f->fmt.pix.pixelformat = dev->format->fourcc;
 956         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 957         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 958         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 959
 960         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 961
 962         return 0;
 963 }
 964
 965 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 966 {
 967         unsigned int i;
 968
 969         for (i = 0; i < ARRAY_SIZE(format); i++)
 970                 if (format[i].fourcc == fourcc)
 971                         return &format[i];
 972
 973         return NULL;
 974 }
 975
 976 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 977                                   struct v4l2_format *f)
 978 {
 979         struct cx231xx_fh *fh = priv;
 980         struct cx231xx *dev = fh->dev;
 981         unsigned int width = f->fmt.pix.width;
 982         unsigned int height = f->fmt.pix.height;
 983         unsigned int maxw = norm_maxw(dev);
 984         unsigned int maxh = norm_maxh(dev);
 985         struct cx231xx_fmt *fmt;
 986
 987         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 988         if (!fmt) {
 989                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 990                                  f->fmt.pix.pixelformat);
 991                 return -EINVAL;
 992         }
 993
 994         /* width must even because of the YUYV format
 995            height must be even because of interlacing */
 996         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 997
 998         f->fmt.pix.width = width;
 999         f->fmt.pix.height = height;
1000         f->fmt.pix.pixelformat = fmt->fourcc;
1001         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
1002         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1003         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1004         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1005
1006         return 0;
1007 }
1008
1009 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1010                                 struct v4l2_format *f)
1011 {
1012         struct cx231xx_fh *fh = priv;
1013         struct cx231xx *dev = fh->dev;
1014         int rc;
1015         struct cx231xx_fmt *fmt;
1016         struct v4l2_mbus_framefmt mbus_fmt;
1017
1018         rc = check_dev(dev);
1019         if (rc < 0)
1020                 return rc;
1021
1022         vidioc_try_fmt_vid_cap(file, priv, f);
1023
1024         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1025         if (!fmt)
1026                 return -EINVAL;
1027
1028         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1029                 dev_err(dev->dev, "%s: queue busy\n", __func__);
1030                 return -EBUSY;
1031         }
1032
1033         if (dev->stream_on && !fh->stream_on) {
1034                 dev_err(dev->dev,
1035                         "%s: device in use by another fh\n", __func__);
1036                 return -EBUSY;
1037         }
1038
1039         /* set new image size */
1040         dev->width = f->fmt.pix.width;
1041         dev->height = f->fmt.pix.height;
1042         dev->format = fmt;
1043
1044         v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
1045         call_all(dev, video, s_mbus_fmt, &mbus_fmt);
1046         v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
1047
1048         return rc;
1049 }
1050
1051 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
1052 {
1053         struct cx231xx_fh *fh = priv;
1054         struct cx231xx *dev = fh->dev;
1055
1056         *id = dev->norm;
1057         return 0;
1058 }
1059
1060 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1061 {
1062         struct cx231xx_fh *fh = priv;
1063         struct cx231xx *dev = fh->dev;
1064         struct v4l2_mbus_framefmt mbus_fmt;
1065         int rc;
1066
1067         rc = check_dev(dev);
1068         if (rc < 0)
1069                 return rc;
1070
1071         if (dev->norm == norm)
1072                 return 0;
1073
1074         if (videobuf_queue_is_busy(&fh->vb_vidq))
1075                 return -EBUSY;
1076
1077         dev->norm = norm;
1078
1079         /* Adjusts width/height, if needed */
1080         dev->width = 720;
1081         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1082
1083         call_all(dev, video, s_std, dev->norm);
1084
1085         /* We need to reset basic properties in the decoder related to
1086            resolution (since a standard change effects things like the number
1087            of lines in VACT, etc) */
1088         memset(&mbus_fmt, 0, sizeof(mbus_fmt));
1089         mbus_fmt.code = MEDIA_BUS_FMT_FIXED;
1090         mbus_fmt.width = dev->width;
1091         mbus_fmt.height = dev->height;
1092         call_all(dev, video, s_mbus_fmt, &mbus_fmt);
1093
1094         /* do mode control overrides */
1095         cx231xx_do_mode_ctrl_overrides(dev);
1096
1097         return 0;
1098 }
1099
1100 static const char *iname[] = {
1101         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1102         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1103         [CX231XX_VMUX_TELEVISION] = "Television",
1104         [CX231XX_VMUX_CABLE]      = "Cable TV",
1105         [CX231XX_VMUX_DVB]        = "DVB",
1106         [CX231XX_VMUX_DEBUG]      = "for debug only",
1107 };
1108
1109 int cx231xx_enum_input(struct file *file, void *priv,
1110                              struct v4l2_input *i)
1111 {
1112         struct cx231xx_fh *fh = priv;
1113         struct cx231xx *dev = fh->dev;
1114         u32 gen_stat;
1115         unsigned int ret, n;
1116
1117         n = i->index;
1118         if (n >= MAX_CX231XX_INPUT)
1119                 return -EINVAL;
1120         if (0 == INPUT(n)->type)
1121                 return -EINVAL;
1122
1123         i->index = n;
1124         i->type = V4L2_INPUT_TYPE_CAMERA;
1125
1126         strcpy(i->name, iname[INPUT(n)->type]);
1127
1128         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1129             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1130                 i->type = V4L2_INPUT_TYPE_TUNER;
1131
1132         i->std = dev->vdev.tvnorms;
1133
1134         /* If they are asking about the active input, read signal status */
1135         if (n == dev->video_input) {
1136                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1137                                             GEN_STAT, 2, &gen_stat, 4);
1138                 if (ret > 0) {
1139                         if ((gen_stat & FLD_VPRES) == 0x00)
1140                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1141                         if ((gen_stat & FLD_HLOCK) == 0x00)
1142                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1143                 }
1144         }
1145
1146         return 0;
1147 }
1148
1149 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1150 {
1151         struct cx231xx_fh *fh = priv;
1152         struct cx231xx *dev = fh->dev;
1153
1154         *i = dev->video_input;
1155
1156         return 0;
1157 }
1158
1159 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1160 {
1161         struct cx231xx_fh *fh = priv;
1162         struct cx231xx *dev = fh->dev;
1163         int rc;
1164
1165         dev->mode_tv = 0;
1166         rc = check_dev(dev);
1167         if (rc < 0)
1168                 return rc;
1169
1170         if (i >= MAX_CX231XX_INPUT)
1171                 return -EINVAL;
1172         if (0 == INPUT(i)->type)
1173                 return -EINVAL;
1174
1175         video_mux(dev, i);
1176
1177         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1178             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1179                 /* There's a tuner, so reset the standard and put it on the
1180                    last known frequency (since it was probably powered down
1181                    until now */
1182                 call_all(dev, video, s_std, dev->norm);
1183         }
1184
1185         return 0;
1186 }
1187
1188 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1189 {
1190         struct cx231xx_fh *fh = priv;
1191         struct cx231xx *dev = fh->dev;
1192         int rc;
1193
1194         rc = check_dev(dev);
1195         if (rc < 0)
1196                 return rc;
1197
1198         if (0 != t->index)
1199                 return -EINVAL;
1200
1201         strcpy(t->name, "Tuner");
1202
1203         t->type = V4L2_TUNER_ANALOG_TV;
1204         t->capability = V4L2_TUNER_CAP_NORM;
1205         t->rangehigh = 0xffffffffUL;
1206         t->signal = 0xffff;     /* LOCKED */
1207         call_all(dev, tuner, g_tuner, t);
1208
1209         return 0;
1210 }
1211
1212 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1213 {
1214         struct cx231xx_fh *fh = priv;
1215         struct cx231xx *dev = fh->dev;
1216         int rc;
1217
1218         rc = check_dev(dev);
1219         if (rc < 0)
1220                 return rc;
1221
1222         if (0 != t->index)
1223                 return -EINVAL;
1224 #if 0
1225         call_all(dev, tuner, s_tuner, t);
1226 #endif
1227         return 0;
1228 }
1229
1230 int cx231xx_g_frequency(struct file *file, void *priv,
1231                               struct v4l2_frequency *f)
1232 {
1233         struct cx231xx_fh *fh = priv;
1234         struct cx231xx *dev = fh->dev;
1235
1236         if (f->tuner)
1237                 return -EINVAL;
1238
1239         f->frequency = dev->ctl_freq;
1240
1241         return 0;
1242 }
1243
1244 int cx231xx_s_frequency(struct file *file, void *priv,
1245                               const struct v4l2_frequency *f)
1246 {
1247         struct cx231xx_fh *fh = priv;
1248         struct cx231xx *dev = fh->dev;
1249         struct v4l2_frequency new_freq = *f;
1250         int rc;
1251         u32 if_frequency = 5400000;
1252
1253         dev_dbg(dev->dev,
1254                 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1255                 f->frequency, f->type);
1256
1257         rc = check_dev(dev);
1258         if (rc < 0)
1259                 return rc;
1260
1261         if (0 != f->tuner)
1262                 return -EINVAL;
1263
1264         /* set pre channel change settings in DIF first */
1265         rc = cx231xx_tuner_pre_channel_change(dev);
1266
1267         call_all(dev, tuner, s_frequency, f);
1268         call_all(dev, tuner, g_frequency, &new_freq);
1269         dev->ctl_freq = new_freq.frequency;
1270
1271         /* set post channel change settings in DIF first */
1272         rc = cx231xx_tuner_post_channel_change(dev);
1273
1274         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1275                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1276                         if_frequency = 5400000;  /*5.4MHz       */
1277                 else if (dev->norm & V4L2_STD_B)
1278                         if_frequency = 6000000;  /*6.0MHz       */
1279                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1280                         if_frequency = 6900000;  /*6.9MHz       */
1281                 else if (dev->norm & V4L2_STD_GH)
1282                         if_frequency = 7100000;  /*7.1MHz       */
1283                 else if (dev->norm & V4L2_STD_PAL_I)
1284                         if_frequency = 7250000;  /*7.25MHz      */
1285                 else if (dev->norm & V4L2_STD_SECAM_L)
1286                         if_frequency = 6900000;  /*6.9MHz       */
1287                 else if (dev->norm & V4L2_STD_SECAM_LC)
1288                         if_frequency = 1250000;  /*1.25MHz      */
1289
1290                 dev_dbg(dev->dev,
1291                         "if_frequency is set to %d\n", if_frequency);
1292                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1293
1294                 update_HH_register_after_set_DIF(dev);
1295         }
1296
1297         dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1298
1299         return rc;
1300 }
1301
1302 #ifdef CONFIG_VIDEO_ADV_DEBUG
1303
1304 int cx231xx_g_chip_info(struct file *file, void *fh,
1305                         struct v4l2_dbg_chip_info *chip)
1306 {
1307         switch (chip->match.addr) {
1308         case 0: /* Cx231xx - internal registers */
1309                 return 0;
1310         case 1: /* AFE - read byte */
1311                 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1312                 return 0;
1313         case 2: /* Video Block - read byte */
1314                 strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1315                 return 0;
1316         case 3: /* I2S block - read byte */
1317                 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1318                 return 0;
1319         case 4: /* AFE - read dword */
1320                 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1321                 return 0;
1322         case 5: /* Video Block - read dword */
1323                 strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1324                 return 0;
1325         case 6: /* I2S Block - read dword */
1326                 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1327                 return 0;
1328         }
1329         return -EINVAL;
1330 }
1331
1332 int cx231xx_g_register(struct file *file, void *priv,
1333                              struct v4l2_dbg_register *reg)
1334 {
1335         struct cx231xx_fh *fh = priv;
1336         struct cx231xx *dev = fh->dev;
1337         int ret;
1338         u8 value[4] = { 0, 0, 0, 0 };
1339         u32 data = 0;
1340
1341         switch (reg->match.addr) {
1342         case 0: /* Cx231xx - internal registers */
1343                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1344                                 (u16)reg->reg, value, 4);
1345                 reg->val = value[0] | value[1] << 8 |
1346                         value[2] << 16 | value[3] << 24;
1347                 reg->size = 4;
1348                 break;
1349         case 1: /* AFE - read byte */
1350                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1351                                 (u16)reg->reg, 2, &data, 1);
1352                 reg->val = data;
1353                 reg->size = 1;
1354                 break;
1355         case 2: /* Video Block - read byte */
1356                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1357                                 (u16)reg->reg, 2, &data, 1);
1358                 reg->val = data;
1359                 reg->size = 1;
1360                 break;
1361         case 3: /* I2S block - read byte */
1362                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1363                                 (u16)reg->reg, 1, &data, 1);
1364                 reg->val = data;
1365                 reg->size = 1;
1366                 break;
1367         case 4: /* AFE - read dword */
1368                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1369                                 (u16)reg->reg, 2, &data, 4);
1370                 reg->val = data;
1371                 reg->size = 4;
1372                 break;
1373         case 5: /* Video Block - read dword */
1374                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1375                                 (u16)reg->reg, 2, &data, 4);
1376                 reg->val = data;
1377                 reg->size = 4;
1378                 break;
1379         case 6: /* I2S Block - read dword */
1380                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1381                                 (u16)reg->reg, 1, &data, 4);
1382                 reg->val = data;
1383                 reg->size = 4;
1384                 break;
1385         default:
1386                 return -EINVAL;
1387         }
1388         return ret < 0 ? ret : 0;
1389 }
1390
1391 int cx231xx_s_register(struct file *file, void *priv,
1392                              const struct v4l2_dbg_register *reg)
1393 {
1394         struct cx231xx_fh *fh = priv;
1395         struct cx231xx *dev = fh->dev;
1396         int ret;
1397         u8 data[4] = { 0, 0, 0, 0 };
1398
1399         switch (reg->match.addr) {
1400         case 0: /* cx231xx internal registers */
1401                 data[0] = (u8) reg->val;
1402                 data[1] = (u8) (reg->val >> 8);
1403                 data[2] = (u8) (reg->val >> 16);
1404                 data[3] = (u8) (reg->val >> 24);
1405                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1406                                 (u16)reg->reg, data, 4);
1407                 break;
1408         case 1: /* AFE - write byte */
1409                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1410                                 (u16)reg->reg, 2, reg->val, 1);
1411                 break;
1412         case 2: /* Video Block - write byte */
1413                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1414                                 (u16)reg->reg, 2, reg->val, 1);
1415                 break;
1416         case 3: /* I2S block - write byte */
1417                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1418                                 (u16)reg->reg, 1, reg->val, 1);
1419                 break;
1420         case 4: /* AFE - write dword */
1421                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1422                                 (u16)reg->reg, 2, reg->val, 4);
1423                 break;
1424         case 5: /* Video Block - write dword */
1425                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1426                                 (u16)reg->reg, 2, reg->val, 4);
1427                 break;
1428         case 6: /* I2S block - write dword */
1429                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1430                                 (u16)reg->reg, 1, reg->val, 4);
1431                 break;
1432         default:
1433                 return -EINVAL;
1434         }
1435         return ret < 0 ? ret : 0;
1436 }
1437 #endif
1438
1439 static int vidioc_cropcap(struct file *file, void *priv,
1440                           struct v4l2_cropcap *cc)
1441 {
1442         struct cx231xx_fh *fh = priv;
1443         struct cx231xx *dev = fh->dev;
1444
1445         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1446                 return -EINVAL;
1447
1448         cc->bounds.left = 0;
1449         cc->bounds.top = 0;
1450         cc->bounds.width = dev->width;
1451         cc->bounds.height = dev->height;
1452         cc->defrect = cc->bounds;
1453         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1454         cc->pixelaspect.denominator = 59;
1455
1456         return 0;
1457 }
1458
1459 static int vidioc_streamon(struct file *file, void *priv,
1460                            enum v4l2_buf_type type)
1461 {
1462         struct cx231xx_fh *fh = priv;
1463         struct cx231xx *dev = fh->dev;
1464         int rc;
1465
1466         rc = check_dev(dev);
1467         if (rc < 0)
1468                 return rc;
1469
1470         rc = res_get(fh);
1471
1472         if (likely(rc >= 0))
1473                 rc = videobuf_streamon(&fh->vb_vidq);
1474
1475         call_all(dev, video, s_stream, 1);
1476
1477         return rc;
1478 }
1479
1480 static int vidioc_streamoff(struct file *file, void *priv,
1481                             enum v4l2_buf_type type)
1482 {
1483         struct cx231xx_fh *fh = priv;
1484         struct cx231xx *dev = fh->dev;
1485         int rc;
1486
1487         rc = check_dev(dev);
1488         if (rc < 0)
1489                 return rc;
1490
1491         if (type != fh->type)
1492                 return -EINVAL;
1493
1494         cx25840_call(dev, video, s_stream, 0);
1495
1496         videobuf_streamoff(&fh->vb_vidq);
1497         res_free(fh);
1498
1499         return 0;
1500 }
1501
1502 int cx231xx_querycap(struct file *file, void *priv,
1503                            struct v4l2_capability *cap)
1504 {
1505         struct video_device *vdev = video_devdata(file);
1506         struct cx231xx_fh *fh = priv;
1507         struct cx231xx *dev = fh->dev;
1508
1509         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1510         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1511         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1512
1513         if (vdev->vfl_type == VFL_TYPE_RADIO)
1514                 cap->device_caps = V4L2_CAP_RADIO;
1515         else {
1516                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1517                 if (vdev->vfl_type == VFL_TYPE_VBI)
1518                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1519                 else
1520                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1521         }
1522         if (dev->tuner_type != TUNER_ABSENT)
1523                 cap->device_caps |= V4L2_CAP_TUNER;
1524         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1525                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1526                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1527         if (video_is_registered(&dev->radio_dev))
1528                 cap->capabilities |= V4L2_CAP_RADIO;
1529
1530         return 0;
1531 }
1532
1533 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1534                                    struct v4l2_fmtdesc *f)
1535 {
1536         if (unlikely(f->index >= ARRAY_SIZE(format)))
1537                 return -EINVAL;
1538
1539         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1540         f->pixelformat = format[f->index].fourcc;
1541
1542         return 0;
1543 }
1544
1545 /* RAW VBI ioctls */
1546
1547 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1548                                 struct v4l2_format *f)
1549 {
1550         struct cx231xx_fh *fh = priv;
1551         struct cx231xx *dev = fh->dev;
1552
1553         f->fmt.vbi.sampling_rate = 6750000 * 4;
1554         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1555         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1556         f->fmt.vbi.offset = 0;
1557         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1558             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1559         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1560             PAL_VBI_LINES : NTSC_VBI_LINES;
1561         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1562             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1563         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1564         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1565
1566         return 0;
1567
1568 }
1569
1570 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1571                                   struct v4l2_format *f)
1572 {
1573         struct cx231xx_fh *fh = priv;
1574         struct cx231xx *dev = fh->dev;
1575
1576         f->fmt.vbi.sampling_rate = 6750000 * 4;
1577         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1578         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1579         f->fmt.vbi.offset = 0;
1580         f->fmt.vbi.flags = 0;
1581         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1582             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1583         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1584             PAL_VBI_LINES : NTSC_VBI_LINES;
1585         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1586             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1587         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1588         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1589
1590         return 0;
1591
1592 }
1593
1594 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1595                                   struct v4l2_format *f)
1596 {
1597         struct cx231xx_fh *fh = priv;
1598         struct cx231xx *dev = fh->dev;
1599
1600         if (dev->vbi_stream_on && !fh->stream_on) {
1601                 dev_err(dev->dev,
1602                         "%s device in use by another fh\n", __func__);
1603                 return -EBUSY;
1604         }
1605         return vidioc_try_fmt_vbi_cap(file, priv, f);
1606 }
1607
1608 static int vidioc_reqbufs(struct file *file, void *priv,
1609                           struct v4l2_requestbuffers *rb)
1610 {
1611         struct cx231xx_fh *fh = priv;
1612         struct cx231xx *dev = fh->dev;
1613         int rc;
1614
1615         rc = check_dev(dev);
1616         if (rc < 0)
1617                 return rc;
1618
1619         return videobuf_reqbufs(&fh->vb_vidq, rb);
1620 }
1621
1622 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1623 {
1624         struct cx231xx_fh *fh = priv;
1625         struct cx231xx *dev = fh->dev;
1626         int rc;
1627
1628         rc = check_dev(dev);
1629         if (rc < 0)
1630                 return rc;
1631
1632         return videobuf_querybuf(&fh->vb_vidq, b);
1633 }
1634
1635 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1636 {
1637         struct cx231xx_fh *fh = priv;
1638         struct cx231xx *dev = fh->dev;
1639         int rc;
1640
1641         rc = check_dev(dev);
1642         if (rc < 0)
1643                 return rc;
1644
1645         return videobuf_qbuf(&fh->vb_vidq, b);
1646 }
1647
1648 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1649 {
1650         struct cx231xx_fh *fh = priv;
1651         struct cx231xx *dev = fh->dev;
1652         int rc;
1653
1654         rc = check_dev(dev);
1655         if (rc < 0)
1656                 return rc;
1657
1658         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1659 }
1660
1661 /* ----------------------------------------------------------- */
1662 /* RADIO ESPECIFIC IOCTLS                                      */
1663 /* ----------------------------------------------------------- */
1664
1665 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1666 {
1667         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1668
1669         if (t->index)
1670                 return -EINVAL;
1671
1672         strcpy(t->name, "Radio");
1673
1674         call_all(dev, tuner, g_tuner, t);
1675
1676         return 0;
1677 }
1678 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1679 {
1680         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1681
1682         if (t->index)
1683                 return -EINVAL;
1684
1685         call_all(dev, tuner, s_tuner, t);
1686
1687         return 0;
1688 }
1689
1690 /*
1691  * cx231xx_v4l2_open()
1692  * inits the device and starts isoc transfer
1693  */
1694 static int cx231xx_v4l2_open(struct file *filp)
1695 {
1696         int radio = 0;
1697         struct video_device *vdev = video_devdata(filp);
1698         struct cx231xx *dev = video_drvdata(filp);
1699         struct cx231xx_fh *fh;
1700         enum v4l2_buf_type fh_type = 0;
1701
1702         switch (vdev->vfl_type) {
1703         case VFL_TYPE_GRABBER:
1704                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1705                 break;
1706         case VFL_TYPE_VBI:
1707                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1708                 break;
1709         case VFL_TYPE_RADIO:
1710                 radio = 1;
1711                 break;
1712         }
1713
1714         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1715                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1716                          dev->users);
1717
1718 #if 0
1719         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1720         if (errCode < 0) {
1721                 dev_err(dev->dev,
1722                         "Device locked on digital mode. Can't open analog\n");
1723                 return -EBUSY;
1724         }
1725 #endif
1726
1727         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1728         if (!fh)
1729                 return -ENOMEM;
1730         if (mutex_lock_interruptible(&dev->lock)) {
1731                 kfree(fh);
1732                 return -ERESTARTSYS;
1733         }
1734         fh->dev = dev;
1735         fh->type = fh_type;
1736         filp->private_data = fh;
1737         v4l2_fh_init(&fh->fh, vdev);
1738
1739         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1740                 /* Power up in Analog TV mode */
1741                 if (dev->board.external_av)
1742                         cx231xx_set_power_mode(dev,
1743                                  POLARIS_AVMODE_ENXTERNAL_AV);
1744                 else
1745                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1746
1747 #if 0
1748                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1749 #endif
1750
1751                 /* set video alternate setting */
1752                 cx231xx_set_video_alternate(dev);
1753
1754                 /* Needed, since GPIO might have disabled power of
1755                    some i2c device */
1756                 cx231xx_config_i2c(dev);
1757
1758                 /* device needs to be initialized before isoc transfer */
1759                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1760
1761         }
1762         if (radio) {
1763                 cx231xx_videodbg("video_open: setting radio device\n");
1764
1765                 /* cx231xx_start_radio(dev); */
1766
1767                 call_all(dev, tuner, s_radio);
1768         }
1769
1770         dev->users++;
1771
1772         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1773                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1774                                             NULL, &dev->video_mode.slock,
1775                                             fh->type, V4L2_FIELD_INTERLACED,
1776                                             sizeof(struct cx231xx_buffer),
1777                                             fh, &dev->lock);
1778         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1779                 /* Set the required alternate setting  VBI interface works in
1780                    Bulk mode only */
1781                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1782
1783                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1784                                             NULL, &dev->vbi_mode.slock,
1785                                             fh->type, V4L2_FIELD_SEQ_TB,
1786                                             sizeof(struct cx231xx_buffer),
1787                                             fh, &dev->lock);
1788         }
1789         mutex_unlock(&dev->lock);
1790         v4l2_fh_add(&fh->fh);
1791
1792         return 0;
1793 }
1794
1795 /*
1796  * cx231xx_realease_resources()
1797  * unregisters the v4l2,i2c and usb devices
1798  * called when the device gets disconected or at module unload
1799 */
1800 void cx231xx_release_analog_resources(struct cx231xx *dev)
1801 {
1802
1803         /*FIXME: I2C IR should be disconnected */
1804
1805         if (video_is_registered(&dev->radio_dev))
1806                 video_unregister_device(&dev->radio_dev);
1807         if (video_is_registered(&dev->vbi_dev)) {
1808                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1809                         video_device_node_name(&dev->vbi_dev));
1810                 video_unregister_device(&dev->vbi_dev);
1811         }
1812         if (video_is_registered(&dev->vdev)) {
1813                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1814                         video_device_node_name(&dev->vdev));
1815
1816                 if (dev->board.has_417)
1817                         cx231xx_417_unregister(dev);
1818
1819                 video_unregister_device(&dev->vdev);
1820         }
1821         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1822         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1823 }
1824
1825 /*
1826  * cx231xx_close()
1827  * stops streaming and deallocates all resources allocated by the v4l2
1828  * calls and ioctls
1829  */
1830 static int cx231xx_close(struct file *filp)
1831 {
1832         struct cx231xx_fh *fh = filp->private_data;
1833         struct cx231xx *dev = fh->dev;
1834
1835         cx231xx_videodbg("users=%d\n", dev->users);
1836
1837         cx231xx_videodbg("users=%d\n", dev->users);
1838         if (res_check(fh))
1839                 res_free(fh);
1840
1841         /*
1842          * To workaround error number=-71 on EP0 for VideoGrabber,
1843          *       need exclude following.
1844          * FIXME: It is probably safe to remove most of these, as we're
1845          * now avoiding the alternate setting for INDEX_VANC
1846          */
1847         if (!dev->board.no_alt_vanc)
1848                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1849                         videobuf_stop(&fh->vb_vidq);
1850                         videobuf_mmap_free(&fh->vb_vidq);
1851
1852                         /* the device is already disconnect,
1853                            free the remaining resources */
1854                         if (dev->state & DEV_DISCONNECTED) {
1855                                 if (atomic_read(&dev->devlist_count) > 0) {
1856                                         cx231xx_release_resources(dev);
1857                                         fh->dev = NULL;
1858                                         return 0;
1859                                 }
1860                                 return 0;
1861                         }
1862
1863                         /* do this before setting alternate! */
1864                         cx231xx_uninit_vbi_isoc(dev);
1865
1866                         /* set alternate 0 */
1867                         if (!dev->vbi_or_sliced_cc_mode)
1868                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1869                         else
1870                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1871
1872                         v4l2_fh_del(&fh->fh);
1873                         v4l2_fh_exit(&fh->fh);
1874                         kfree(fh);
1875                         dev->users--;
1876                         wake_up_interruptible_nr(&dev->open, 1);
1877                         return 0;
1878                 }
1879
1880         v4l2_fh_del(&fh->fh);
1881         dev->users--;
1882         if (!dev->users) {
1883                 videobuf_stop(&fh->vb_vidq);
1884                 videobuf_mmap_free(&fh->vb_vidq);
1885
1886                 /* the device is already disconnect,
1887                    free the remaining resources */
1888                 if (dev->state & DEV_DISCONNECTED) {
1889                         cx231xx_release_resources(dev);
1890                         fh->dev = NULL;
1891                         return 0;
1892                 }
1893
1894                 /* Save some power by putting tuner to sleep */
1895                 call_all(dev, core, s_power, 0);
1896
1897                 /* do this before setting alternate! */
1898                 if (dev->USE_ISO)
1899                         cx231xx_uninit_isoc(dev);
1900                 else
1901                         cx231xx_uninit_bulk(dev);
1902                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1903
1904                 /* set alternate 0 */
1905                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1906         }
1907         v4l2_fh_exit(&fh->fh);
1908         kfree(fh);
1909         wake_up_interruptible_nr(&dev->open, 1);
1910         return 0;
1911 }
1912
1913 static int cx231xx_v4l2_close(struct file *filp)
1914 {
1915         struct cx231xx_fh *fh = filp->private_data;
1916         struct cx231xx *dev = fh->dev;
1917         int rc;
1918
1919         mutex_lock(&dev->lock);
1920         rc = cx231xx_close(filp);
1921         mutex_unlock(&dev->lock);
1922         return rc;
1923 }
1924
1925 /*
1926  * cx231xx_v4l2_read()
1927  * will allocate buffers when called for the first time
1928  */
1929 static ssize_t
1930 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1931                   loff_t *pos)
1932 {
1933         struct cx231xx_fh *fh = filp->private_data;
1934         struct cx231xx *dev = fh->dev;
1935         int rc;
1936
1937         rc = check_dev(dev);
1938         if (rc < 0)
1939                 return rc;
1940
1941         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1942             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1943                 rc = res_get(fh);
1944
1945                 if (unlikely(rc < 0))
1946                         return rc;
1947
1948                 if (mutex_lock_interruptible(&dev->lock))
1949                         return -ERESTARTSYS;
1950                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1951                                             filp->f_flags & O_NONBLOCK);
1952                 mutex_unlock(&dev->lock);
1953                 return rc;
1954         }
1955         return 0;
1956 }
1957
1958 /*
1959  * cx231xx_v4l2_poll()
1960  * will allocate buffers when called for the first time
1961  */
1962 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
1963 {
1964         unsigned long req_events = poll_requested_events(wait);
1965         struct cx231xx_fh *fh = filp->private_data;
1966         struct cx231xx *dev = fh->dev;
1967         unsigned res = 0;
1968         int rc;
1969
1970         rc = check_dev(dev);
1971         if (rc < 0)
1972                 return POLLERR;
1973
1974         rc = res_get(fh);
1975
1976         if (unlikely(rc < 0))
1977                 return POLLERR;
1978
1979         if (v4l2_event_pending(&fh->fh))
1980                 res |= POLLPRI;
1981         else
1982                 poll_wait(filp, &fh->fh.wait, wait);
1983
1984         if (!(req_events & (POLLIN | POLLRDNORM)))
1985                 return res;
1986
1987         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
1988             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
1989                 mutex_lock(&dev->lock);
1990                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1991                 mutex_unlock(&dev->lock);
1992                 return res;
1993         }
1994         return res | POLLERR;
1995 }
1996
1997 /*
1998  * cx231xx_v4l2_mmap()
1999  */
2000 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2001 {
2002         struct cx231xx_fh *fh = filp->private_data;
2003         struct cx231xx *dev = fh->dev;
2004         int rc;
2005
2006         rc = check_dev(dev);
2007         if (rc < 0)
2008                 return rc;
2009
2010         rc = res_get(fh);
2011
2012         if (unlikely(rc < 0))
2013                 return rc;
2014
2015         if (mutex_lock_interruptible(&dev->lock))
2016                 return -ERESTARTSYS;
2017         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2018         mutex_unlock(&dev->lock);
2019
2020         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2021                          (unsigned long)vma->vm_start,
2022                          (unsigned long)vma->vm_end -
2023                          (unsigned long)vma->vm_start, rc);
2024
2025         return rc;
2026 }
2027
2028 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2029         .owner   = THIS_MODULE,
2030         .open    = cx231xx_v4l2_open,
2031         .release = cx231xx_v4l2_close,
2032         .read    = cx231xx_v4l2_read,
2033         .poll    = cx231xx_v4l2_poll,
2034         .mmap    = cx231xx_v4l2_mmap,
2035         .unlocked_ioctl   = video_ioctl2,
2036 };
2037
2038 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2039         .vidioc_querycap               = cx231xx_querycap,
2040         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2041         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2042         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2043         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2044         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2045         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2046         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
2047         .vidioc_cropcap                = vidioc_cropcap,
2048         .vidioc_reqbufs                = vidioc_reqbufs,
2049         .vidioc_querybuf               = vidioc_querybuf,
2050         .vidioc_qbuf                   = vidioc_qbuf,
2051         .vidioc_dqbuf                  = vidioc_dqbuf,
2052         .vidioc_s_std                  = vidioc_s_std,
2053         .vidioc_g_std                  = vidioc_g_std,
2054         .vidioc_enum_input             = cx231xx_enum_input,
2055         .vidioc_g_input                = cx231xx_g_input,
2056         .vidioc_s_input                = cx231xx_s_input,
2057         .vidioc_streamon               = vidioc_streamon,
2058         .vidioc_streamoff              = vidioc_streamoff,
2059         .vidioc_g_tuner                = cx231xx_g_tuner,
2060         .vidioc_s_tuner                = cx231xx_s_tuner,
2061         .vidioc_g_frequency            = cx231xx_g_frequency,
2062         .vidioc_s_frequency            = cx231xx_s_frequency,
2063 #ifdef CONFIG_VIDEO_ADV_DEBUG
2064         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2065         .vidioc_g_register             = cx231xx_g_register,
2066         .vidioc_s_register             = cx231xx_s_register,
2067 #endif
2068         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2069         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2070 };
2071
2072 static struct video_device cx231xx_vbi_template;
2073
2074 static const struct video_device cx231xx_video_template = {
2075         .fops         = &cx231xx_v4l_fops,
2076         .release      = video_device_release_empty,
2077         .ioctl_ops    = &video_ioctl_ops,
2078         .tvnorms      = V4L2_STD_ALL,
2079 };
2080
2081 static const struct v4l2_file_operations radio_fops = {
2082         .owner   = THIS_MODULE,
2083         .open   = cx231xx_v4l2_open,
2084         .release = cx231xx_v4l2_close,
2085         .poll = v4l2_ctrl_poll,
2086         .unlocked_ioctl = video_ioctl2,
2087 };
2088
2089 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2090         .vidioc_querycap    = cx231xx_querycap,
2091         .vidioc_g_tuner     = radio_g_tuner,
2092         .vidioc_s_tuner     = radio_s_tuner,
2093         .vidioc_g_frequency = cx231xx_g_frequency,
2094         .vidioc_s_frequency = cx231xx_s_frequency,
2095 #ifdef CONFIG_VIDEO_ADV_DEBUG
2096         .vidioc_g_chip_info = cx231xx_g_chip_info,
2097         .vidioc_g_register  = cx231xx_g_register,
2098         .vidioc_s_register  = cx231xx_s_register,
2099 #endif
2100         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2101         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2102 };
2103
2104 static struct video_device cx231xx_radio_template = {
2105         .name      = "cx231xx-radio",
2106         .fops      = &radio_fops,
2107         .ioctl_ops = &radio_ioctl_ops,
2108 };
2109
2110 /******************************** usb interface ******************************/
2111
2112 static void cx231xx_vdev_init(struct cx231xx *dev,
2113                 struct video_device *vfd,
2114                 const struct video_device *template,
2115                 const char *type_name)
2116 {
2117         *vfd = *template;
2118         vfd->v4l2_dev = &dev->v4l2_dev;
2119         vfd->release = video_device_release_empty;
2120         vfd->lock = &dev->lock;
2121
2122         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2123
2124         video_set_drvdata(vfd, dev);
2125         if (dev->tuner_type == TUNER_ABSENT) {
2126                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2127                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2128                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2129                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2130         }
2131 }
2132
2133 int cx231xx_register_analog_devices(struct cx231xx *dev)
2134 {
2135         int ret;
2136
2137         dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2138
2139         /* set default norm */
2140         dev->norm = V4L2_STD_PAL;
2141         dev->width = norm_maxw(dev);
2142         dev->height = norm_maxh(dev);
2143         dev->interlaced = 0;
2144
2145         /* Analog specific initialization */
2146         dev->format = &format[0];
2147
2148         /* Set the initial input */
2149         video_mux(dev, dev->video_input);
2150
2151         call_all(dev, video, s_std, dev->norm);
2152
2153         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2154         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2155
2156         if (dev->sd_cx25840) {
2157                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2158                                 dev->sd_cx25840->ctrl_handler, NULL);
2159                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2160                                 dev->sd_cx25840->ctrl_handler,
2161                                 v4l2_ctrl_radio_filter);
2162         }
2163
2164         if (dev->ctrl_handler.error)
2165                 return dev->ctrl_handler.error;
2166         if (dev->radio_ctrl_handler.error)
2167                 return dev->radio_ctrl_handler.error;
2168
2169         /* enable vbi capturing */
2170         /* write code here...  */
2171
2172         /* allocate and fill video video_device struct */
2173         cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2174 #if defined(CONFIG_MEDIA_CONTROLLER)
2175         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2176         ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0);
2177         if (ret < 0)
2178                 dev_err(dev->dev, "failed to initialize video media entity!\n");
2179 #endif
2180         dev->vdev.ctrl_handler = &dev->ctrl_handler;
2181         /* register v4l2 video video_device */
2182         ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2183                                     video_nr[dev->devno]);
2184         if (ret) {
2185                 dev_err(dev->dev,
2186                         "unable to register video device (error=%i).\n",
2187                         ret);
2188                 return ret;
2189         }
2190
2191         dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2192                 video_device_node_name(&dev->vdev));
2193
2194         /* Initialize VBI template */
2195         cx231xx_vbi_template = cx231xx_video_template;
2196         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2197
2198         /* Allocate and fill vbi video_device struct */
2199         cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2200
2201 #if defined(CONFIG_MEDIA_CONTROLLER)
2202         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2203         ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0);
2204         if (ret < 0)
2205                 dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2206 #endif
2207         dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2208         /* register v4l2 vbi video_device */
2209         ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2210                                     vbi_nr[dev->devno]);
2211         if (ret < 0) {
2212                 dev_err(dev->dev, "unable to register vbi device\n");
2213                 return ret;
2214         }
2215
2216         dev_info(dev->dev, "Registered VBI device %s\n",
2217                 video_device_node_name(&dev->vbi_dev));
2218
2219         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2220                 cx231xx_vdev_init(dev, &dev->radio_dev,
2221                                 &cx231xx_radio_template, "radio");
2222                 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2223                 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2224                                             radio_nr[dev->devno]);
2225                 if (ret < 0) {
2226                         dev_err(dev->dev,
2227                                 "can't register radio device\n");
2228                         return ret;
2229                 }
2230                 dev_info(dev->dev, "Registered radio device as %s\n",
2231                         video_device_node_name(&dev->radio_dev));
2232         }
2233
2234         return 0;
2235 }