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         BUG_ON(in_interrupt());
 753
 754         /* We used to wait for the buffer to finish here, but this didn't work
 755            because, as we were keeping the state as VIDEOBUF_QUEUED,
 756            videobuf_queue_cancel marked it as finished for us.
 757            (Also, it could wedge forever if the hardware was misconfigured.)
 758
 759            This should be safe; by the time we get here, the buffer isn't
 760            queued anymore. If we ever start marking the buffers as
 761            VIDEOBUF_ACTIVE, it won't be, though.
 762          */
 763         spin_lock_irqsave(&dev->video_mode.slock, flags);
 764         if (dev->USE_ISO) {
 765                 if (dev->video_mode.isoc_ctl.buf == buf)
 766                         dev->video_mode.isoc_ctl.buf = NULL;
 767         } else {
 768                 if (dev->video_mode.bulk_ctl.buf == buf)
 769                         dev->video_mode.bulk_ctl.buf = NULL;
 770         }
 771         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 772
 773         videobuf_vmalloc_free(&buf->vb);
 774         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 775 }
 776
 777 static int
 778 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 779                enum v4l2_field field)
 780 {
 781         struct cx231xx_fh *fh = vq->priv_data;
 782         struct cx231xx_buffer *buf =
 783             container_of(vb, struct cx231xx_buffer, vb);
 784         struct cx231xx *dev = fh->dev;
 785         int rc = 0, urb_init = 0;
 786
 787         /* The only currently supported format is 16 bits/pixel */
 788         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 789                         + 7) >> 3;
 790         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 791                 return -EINVAL;
 792
 793         buf->vb.width = dev->width;
 794         buf->vb.height = dev->height;
 795         buf->vb.field = field;
 796
 797         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 798                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 799                 if (rc < 0)
 800                         goto fail;
 801         }
 802
 803         if (dev->USE_ISO) {
 804                 if (!dev->video_mode.isoc_ctl.num_bufs)
 805                         urb_init = 1;
 806         } else {
 807                 if (!dev->video_mode.bulk_ctl.num_bufs)
 808                         urb_init = 1;
 809         }
 810         dev_dbg(dev->dev,
 811                 "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 812                 urb_init, dev->video_mode.max_pkt_size);
 813         if (urb_init) {
 814                 dev->mode_tv = 0;
 815                 if (dev->USE_ISO)
 816                         rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 817                                        CX231XX_NUM_BUFS,
 818                                        dev->video_mode.max_pkt_size,
 819                                        cx231xx_isoc_copy);
 820                 else
 821                         rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 822                                        CX231XX_NUM_BUFS,
 823                                        dev->video_mode.max_pkt_size,
 824                                        cx231xx_bulk_copy);
 825                 if (rc < 0)
 826                         goto fail;
 827         }
 828
 829         buf->vb.state = VIDEOBUF_PREPARED;
 830
 831         return 0;
 832
 833 fail:
 834         free_buffer(vq, buf);
 835         return rc;
 836 }
 837
 838 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 839 {
 840         struct cx231xx_buffer *buf =
 841             container_of(vb, struct cx231xx_buffer, vb);
 842         struct cx231xx_fh *fh = vq->priv_data;
 843         struct cx231xx *dev = fh->dev;
 844         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 845
 846         buf->vb.state = VIDEOBUF_QUEUED;
 847         list_add_tail(&buf->vb.queue, &vidq->active);
 848
 849 }
 850
 851 static void buffer_release(struct videobuf_queue *vq,
 852                            struct videobuf_buffer *vb)
 853 {
 854         struct cx231xx_buffer *buf =
 855             container_of(vb, struct cx231xx_buffer, vb);
 856         struct cx231xx_fh *fh = vq->priv_data;
 857         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 858
 859         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 860
 861         free_buffer(vq, buf);
 862 }
 863
 864 static struct videobuf_queue_ops cx231xx_video_qops = {
 865         .buf_setup = buffer_setup,
 866         .buf_prepare = buffer_prepare,
 867         .buf_queue = buffer_queue,
 868         .buf_release = buffer_release,
 869 };
 870
 871 /*********************  v4l2 interface  **************************************/
 872
 873 void video_mux(struct cx231xx *dev, int index)
 874 {
 875         dev->video_input = index;
 876         dev->ctl_ainput = INPUT(index)->amux;
 877
 878         cx231xx_set_video_input_mux(dev, index);
 879
 880         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 881
 882         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 883
 884         dev_dbg(dev->dev, "video_mux : %d\n", index);
 885
 886         /* do mode control overrides if required */
 887         cx231xx_do_mode_ctrl_overrides(dev);
 888 }
 889
 890 /* Usage lock check functions */
 891 static int res_get(struct cx231xx_fh *fh)
 892 {
 893         struct cx231xx *dev = fh->dev;
 894         int rc = 0;
 895
 896         /* This instance already has stream_on */
 897         if (fh->stream_on)
 898                 return rc;
 899
 900         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 901                 if (dev->stream_on)
 902                         return -EBUSY;
 903                 dev->stream_on = 1;
 904         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 905                 if (dev->vbi_stream_on)
 906                         return -EBUSY;
 907                 dev->vbi_stream_on = 1;
 908         } else
 909                 return -EINVAL;
 910
 911         fh->stream_on = 1;
 912
 913         return rc;
 914 }
 915
 916 static int res_check(struct cx231xx_fh *fh)
 917 {
 918         return fh->stream_on;
 919 }
 920
 921 static void res_free(struct cx231xx_fh *fh)
 922 {
 923         struct cx231xx *dev = fh->dev;
 924
 925         fh->stream_on = 0;
 926
 927         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 928                 dev->stream_on = 0;
 929         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 930                 dev->vbi_stream_on = 0;
 931 }
 932
 933 static int check_dev(struct cx231xx *dev)
 934 {
 935         if (dev->state & DEV_DISCONNECTED) {
 936                 dev_err(dev->dev, "v4l2 ioctl: device not present\n");
 937                 return -ENODEV;
 938         }
 939         return 0;
 940 }
 941
 942 /* ------------------------------------------------------------------
 943         IOCTL vidioc handling
 944    ------------------------------------------------------------------*/
 945
 946 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 947                                 struct v4l2_format *f)
 948 {
 949         struct cx231xx_fh *fh = priv;
 950         struct cx231xx *dev = fh->dev;
 951
 952         f->fmt.pix.width = dev->width;
 953         f->fmt.pix.height = dev->height;
 954         f->fmt.pix.pixelformat = dev->format->fourcc;
 955         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 956         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 957         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 958
 959         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 960
 961         return 0;
 962 }
 963
 964 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 965 {
 966         unsigned int i;
 967
 968         for (i = 0; i < ARRAY_SIZE(format); i++)
 969                 if (format[i].fourcc == fourcc)
 970                         return &format[i];
 971
 972         return NULL;
 973 }
 974
 975 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 976                                   struct v4l2_format *f)
 977 {
 978         struct cx231xx_fh *fh = priv;
 979         struct cx231xx *dev = fh->dev;
 980         unsigned int width = f->fmt.pix.width;
 981         unsigned int height = f->fmt.pix.height;
 982         unsigned int maxw = norm_maxw(dev);
 983         unsigned int maxh = norm_maxh(dev);
 984         struct cx231xx_fmt *fmt;
 985
 986         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 987         if (!fmt) {
 988                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 989                                  f->fmt.pix.pixelformat);
 990                 return -EINVAL;
 991         }
 992
 993         /* width must even because of the YUYV format
 994            height must be even because of interlacing */
 995         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 996
 997         f->fmt.pix.width = width;
 998         f->fmt.pix.height = height;
 999         f->fmt.pix.pixelformat = fmt->fourcc;
1000         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
1001         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1002         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1003         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1004
1005         return 0;
1006 }
1007
1008 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1009                                 struct v4l2_format *f)
1010 {
1011         struct cx231xx_fh *fh = priv;
1012         struct cx231xx *dev = fh->dev;
1013         int rc;
1014         struct cx231xx_fmt *fmt;
1015         struct v4l2_subdev_format format = {
1016                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1017         };
1018
1019         rc = check_dev(dev);
1020         if (rc < 0)
1021                 return rc;
1022
1023         vidioc_try_fmt_vid_cap(file, priv, f);
1024
1025         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1026         if (!fmt)
1027                 return -EINVAL;
1028
1029         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1030                 dev_err(dev->dev, "%s: queue busy\n", __func__);
1031                 return -EBUSY;
1032         }
1033
1034         if (dev->stream_on && !fh->stream_on) {
1035                 dev_err(dev->dev,
1036                         "%s: device in use by another fh\n", __func__);
1037                 return -EBUSY;
1038         }
1039
1040         /* set new image size */
1041         dev->width = f->fmt.pix.width;
1042         dev->height = f->fmt.pix.height;
1043         dev->format = fmt;
1044
1045         v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
1046         call_all(dev, pad, set_fmt, NULL, &format);
1047         v4l2_fill_pix_format(&f->fmt.pix, &format.format);
1048
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_subdev_format format = {
1066                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1067         };
1068         int rc;
1069
1070         rc = check_dev(dev);
1071         if (rc < 0)
1072                 return rc;
1073
1074         if (dev->norm == norm)
1075                 return 0;
1076
1077         if (videobuf_queue_is_busy(&fh->vb_vidq))
1078                 return -EBUSY;
1079
1080         dev->norm = norm;
1081
1082         /* Adjusts width/height, if needed */
1083         dev->width = 720;
1084         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1085
1086         call_all(dev, video, s_std, dev->norm);
1087
1088         /* We need to reset basic properties in the decoder related to
1089            resolution (since a standard change effects things like the number
1090            of lines in VACT, etc) */
1091         format.format.code = MEDIA_BUS_FMT_FIXED;
1092         format.format.width = dev->width;
1093         format.format.height = dev->height;
1094         call_all(dev, pad, set_fmt, NULL, &format);
1095
1096         /* do mode control overrides */
1097         cx231xx_do_mode_ctrl_overrides(dev);
1098
1099         return 0;
1100 }
1101
1102 static const char *iname[] = {
1103         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1104         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1105         [CX231XX_VMUX_TELEVISION] = "Television",
1106         [CX231XX_VMUX_CABLE]      = "Cable TV",
1107         [CX231XX_VMUX_DVB]        = "DVB",
1108         [CX231XX_VMUX_DEBUG]      = "for debug only",
1109 };
1110
1111 int cx231xx_enum_input(struct file *file, void *priv,
1112                              struct v4l2_input *i)
1113 {
1114         struct cx231xx_fh *fh = priv;
1115         struct cx231xx *dev = fh->dev;
1116         u32 gen_stat;
1117         unsigned int ret, n;
1118
1119         n = i->index;
1120         if (n >= MAX_CX231XX_INPUT)
1121                 return -EINVAL;
1122         if (0 == INPUT(n)->type)
1123                 return -EINVAL;
1124
1125         i->index = n;
1126         i->type = V4L2_INPUT_TYPE_CAMERA;
1127
1128         strcpy(i->name, iname[INPUT(n)->type]);
1129
1130         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1131             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1132                 i->type = V4L2_INPUT_TYPE_TUNER;
1133
1134         i->std = dev->vdev.tvnorms;
1135
1136         /* If they are asking about the active input, read signal status */
1137         if (n == dev->video_input) {
1138                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1139                                             GEN_STAT, 2, &gen_stat, 4);
1140                 if (ret > 0) {
1141                         if ((gen_stat & FLD_VPRES) == 0x00)
1142                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1143                         if ((gen_stat & FLD_HLOCK) == 0x00)
1144                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1145                 }
1146         }
1147
1148         return 0;
1149 }
1150
1151 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1152 {
1153         struct cx231xx_fh *fh = priv;
1154         struct cx231xx *dev = fh->dev;
1155
1156         *i = dev->video_input;
1157
1158         return 0;
1159 }
1160
1161 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1162 {
1163         struct cx231xx_fh *fh = priv;
1164         struct cx231xx *dev = fh->dev;
1165         int rc;
1166
1167         dev->mode_tv = 0;
1168         rc = check_dev(dev);
1169         if (rc < 0)
1170                 return rc;
1171
1172         if (i >= MAX_CX231XX_INPUT)
1173                 return -EINVAL;
1174         if (0 == INPUT(i)->type)
1175                 return -EINVAL;
1176
1177         video_mux(dev, i);
1178
1179         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1180             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1181                 /* There's a tuner, so reset the standard and put it on the
1182                    last known frequency (since it was probably powered down
1183                    until now */
1184                 call_all(dev, video, s_std, dev->norm);
1185         }
1186
1187         return 0;
1188 }
1189
1190 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1191 {
1192         struct cx231xx_fh *fh = priv;
1193         struct cx231xx *dev = fh->dev;
1194         int rc;
1195
1196         rc = check_dev(dev);
1197         if (rc < 0)
1198                 return rc;
1199
1200         if (0 != t->index)
1201                 return -EINVAL;
1202
1203         strcpy(t->name, "Tuner");
1204
1205         t->type = V4L2_TUNER_ANALOG_TV;
1206         t->capability = V4L2_TUNER_CAP_NORM;
1207         t->rangehigh = 0xffffffffUL;
1208         t->signal = 0xffff;     /* LOCKED */
1209         call_all(dev, tuner, g_tuner, t);
1210
1211         return 0;
1212 }
1213
1214 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1215 {
1216         struct cx231xx_fh *fh = priv;
1217         struct cx231xx *dev = fh->dev;
1218         int rc;
1219
1220         rc = check_dev(dev);
1221         if (rc < 0)
1222                 return rc;
1223
1224         if (0 != t->index)
1225                 return -EINVAL;
1226 #if 0
1227         call_all(dev, tuner, s_tuner, t);
1228 #endif
1229         return 0;
1230 }
1231
1232 int cx231xx_g_frequency(struct file *file, void *priv,
1233                               struct v4l2_frequency *f)
1234 {
1235         struct cx231xx_fh *fh = priv;
1236         struct cx231xx *dev = fh->dev;
1237
1238         if (f->tuner)
1239                 return -EINVAL;
1240
1241         f->frequency = dev->ctl_freq;
1242
1243         return 0;
1244 }
1245
1246 int cx231xx_s_frequency(struct file *file, void *priv,
1247                               const struct v4l2_frequency *f)
1248 {
1249         struct cx231xx_fh *fh = priv;
1250         struct cx231xx *dev = fh->dev;
1251         struct v4l2_frequency new_freq = *f;
1252         int rc;
1253         u32 if_frequency = 5400000;
1254
1255         dev_dbg(dev->dev,
1256                 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1257                 f->frequency, f->type);
1258
1259         rc = check_dev(dev);
1260         if (rc < 0)
1261                 return rc;
1262
1263         if (0 != f->tuner)
1264                 return -EINVAL;
1265
1266         /* set pre channel change settings in DIF first */
1267         rc = cx231xx_tuner_pre_channel_change(dev);
1268
1269         call_all(dev, tuner, s_frequency, f);
1270         call_all(dev, tuner, g_frequency, &new_freq);
1271         dev->ctl_freq = new_freq.frequency;
1272
1273         /* set post channel change settings in DIF first */
1274         rc = cx231xx_tuner_post_channel_change(dev);
1275
1276         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1277                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1278                         if_frequency = 5400000;  /*5.4MHz       */
1279                 else if (dev->norm & V4L2_STD_B)
1280                         if_frequency = 6000000;  /*6.0MHz       */
1281                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1282                         if_frequency = 6900000;  /*6.9MHz       */
1283                 else if (dev->norm & V4L2_STD_GH)
1284                         if_frequency = 7100000;  /*7.1MHz       */
1285                 else if (dev->norm & V4L2_STD_PAL_I)
1286                         if_frequency = 7250000;  /*7.25MHz      */
1287                 else if (dev->norm & V4L2_STD_SECAM_L)
1288                         if_frequency = 6900000;  /*6.9MHz       */
1289                 else if (dev->norm & V4L2_STD_SECAM_LC)
1290                         if_frequency = 1250000;  /*1.25MHz      */
1291
1292                 dev_dbg(dev->dev,
1293                         "if_frequency is set to %d\n", if_frequency);
1294                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1295
1296                 update_HH_register_after_set_DIF(dev);
1297         }
1298
1299         dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1300
1301         return rc;
1302 }
1303
1304 #ifdef CONFIG_VIDEO_ADV_DEBUG
1305
1306 int cx231xx_g_chip_info(struct file *file, void *fh,
1307                         struct v4l2_dbg_chip_info *chip)
1308 {
1309         switch (chip->match.addr) {
1310         case 0: /* Cx231xx - internal registers */
1311                 return 0;
1312         case 1: /* AFE - read byte */
1313                 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1314                 return 0;
1315         case 2: /* Video Block - read byte */
1316                 strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1317                 return 0;
1318         case 3: /* I2S block - read byte */
1319                 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1320                 return 0;
1321         case 4: /* AFE - read dword */
1322                 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1323                 return 0;
1324         case 5: /* Video Block - read dword */
1325                 strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1326                 return 0;
1327         case 6: /* I2S Block - read dword */
1328                 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1329                 return 0;
1330         }
1331         return -EINVAL;
1332 }
1333
1334 int cx231xx_g_register(struct file *file, void *priv,
1335                              struct v4l2_dbg_register *reg)
1336 {
1337         struct cx231xx_fh *fh = priv;
1338         struct cx231xx *dev = fh->dev;
1339         int ret;
1340         u8 value[4] = { 0, 0, 0, 0 };
1341         u32 data = 0;
1342
1343         switch (reg->match.addr) {
1344         case 0: /* Cx231xx - internal registers */
1345                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1346                                 (u16)reg->reg, value, 4);
1347                 reg->val = value[0] | value[1] << 8 |
1348                         value[2] << 16 | value[3] << 24;
1349                 reg->size = 4;
1350                 break;
1351         case 1: /* AFE - read byte */
1352                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1353                                 (u16)reg->reg, 2, &data, 1);
1354                 reg->val = data;
1355                 reg->size = 1;
1356                 break;
1357         case 2: /* Video Block - read byte */
1358                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1359                                 (u16)reg->reg, 2, &data, 1);
1360                 reg->val = data;
1361                 reg->size = 1;
1362                 break;
1363         case 3: /* I2S block - read byte */
1364                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1365                                 (u16)reg->reg, 1, &data, 1);
1366                 reg->val = data;
1367                 reg->size = 1;
1368                 break;
1369         case 4: /* AFE - read dword */
1370                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1371                                 (u16)reg->reg, 2, &data, 4);
1372                 reg->val = data;
1373                 reg->size = 4;
1374                 break;
1375         case 5: /* Video Block - read dword */
1376                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1377                                 (u16)reg->reg, 2, &data, 4);
1378                 reg->val = data;
1379                 reg->size = 4;
1380                 break;
1381         case 6: /* I2S Block - read dword */
1382                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1383                                 (u16)reg->reg, 1, &data, 4);
1384                 reg->val = data;
1385                 reg->size = 4;
1386                 break;
1387         default:
1388                 return -EINVAL;
1389         }
1390         return ret < 0 ? ret : 0;
1391 }
1392
1393 int cx231xx_s_register(struct file *file, void *priv,
1394                              const struct v4l2_dbg_register *reg)
1395 {
1396         struct cx231xx_fh *fh = priv;
1397         struct cx231xx *dev = fh->dev;
1398         int ret;
1399         u8 data[4] = { 0, 0, 0, 0 };
1400
1401         switch (reg->match.addr) {
1402         case 0: /* cx231xx internal registers */
1403                 data[0] = (u8) reg->val;
1404                 data[1] = (u8) (reg->val >> 8);
1405                 data[2] = (u8) (reg->val >> 16);
1406                 data[3] = (u8) (reg->val >> 24);
1407                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1408                                 (u16)reg->reg, data, 4);
1409                 break;
1410         case 1: /* AFE - write byte */
1411                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1412                                 (u16)reg->reg, 2, reg->val, 1);
1413                 break;
1414         case 2: /* Video Block - write byte */
1415                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1416                                 (u16)reg->reg, 2, reg->val, 1);
1417                 break;
1418         case 3: /* I2S block - write byte */
1419                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1420                                 (u16)reg->reg, 1, reg->val, 1);
1421                 break;
1422         case 4: /* AFE - write dword */
1423                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1424                                 (u16)reg->reg, 2, reg->val, 4);
1425                 break;
1426         case 5: /* Video Block - write dword */
1427                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1428                                 (u16)reg->reg, 2, reg->val, 4);
1429                 break;
1430         case 6: /* I2S block - write dword */
1431                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1432                                 (u16)reg->reg, 1, reg->val, 4);
1433                 break;
1434         default:
1435                 return -EINVAL;
1436         }
1437         return ret < 0 ? ret : 0;
1438 }
1439 #endif
1440
1441 static int vidioc_cropcap(struct file *file, void *priv,
1442                           struct v4l2_cropcap *cc)
1443 {
1444         struct cx231xx_fh *fh = priv;
1445         struct cx231xx *dev = fh->dev;
1446
1447         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1448                 return -EINVAL;
1449
1450         cc->bounds.left = 0;
1451         cc->bounds.top = 0;
1452         cc->bounds.width = dev->width;
1453         cc->bounds.height = dev->height;
1454         cc->defrect = cc->bounds;
1455         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1456         cc->pixelaspect.denominator = 59;
1457
1458         return 0;
1459 }
1460
1461 static int vidioc_streamon(struct file *file, void *priv,
1462                            enum v4l2_buf_type type)
1463 {
1464         struct cx231xx_fh *fh = priv;
1465         struct cx231xx *dev = fh->dev;
1466         int rc;
1467
1468         rc = check_dev(dev);
1469         if (rc < 0)
1470                 return rc;
1471
1472         rc = res_get(fh);
1473
1474         if (likely(rc >= 0))
1475                 rc = videobuf_streamon(&fh->vb_vidq);
1476
1477         call_all(dev, video, s_stream, 1);
1478
1479         return rc;
1480 }
1481
1482 static int vidioc_streamoff(struct file *file, void *priv,
1483                             enum v4l2_buf_type type)
1484 {
1485         struct cx231xx_fh *fh = priv;
1486         struct cx231xx *dev = fh->dev;
1487         int rc;
1488
1489         rc = check_dev(dev);
1490         if (rc < 0)
1491                 return rc;
1492
1493         if (type != fh->type)
1494                 return -EINVAL;
1495
1496         cx25840_call(dev, video, s_stream, 0);
1497
1498         videobuf_streamoff(&fh->vb_vidq);
1499         res_free(fh);
1500
1501         return 0;
1502 }
1503
1504 int cx231xx_querycap(struct file *file, void *priv,
1505                            struct v4l2_capability *cap)
1506 {
1507         struct video_device *vdev = video_devdata(file);
1508         struct cx231xx_fh *fh = priv;
1509         struct cx231xx *dev = fh->dev;
1510
1511         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1512         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1513         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1514
1515         if (vdev->vfl_type == VFL_TYPE_RADIO)
1516                 cap->device_caps = V4L2_CAP_RADIO;
1517         else {
1518                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1519                 if (vdev->vfl_type == VFL_TYPE_VBI)
1520                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1521                 else
1522                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1523         }
1524         if (dev->tuner_type != TUNER_ABSENT)
1525                 cap->device_caps |= V4L2_CAP_TUNER;
1526         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1527                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1528                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1529         if (video_is_registered(&dev->radio_dev))
1530                 cap->capabilities |= V4L2_CAP_RADIO;
1531
1532         return 0;
1533 }
1534
1535 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1536                                    struct v4l2_fmtdesc *f)
1537 {
1538         if (unlikely(f->index >= ARRAY_SIZE(format)))
1539                 return -EINVAL;
1540
1541         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1542         f->pixelformat = format[f->index].fourcc;
1543
1544         return 0;
1545 }
1546
1547 /* RAW VBI ioctls */
1548
1549 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1550                                 struct v4l2_format *f)
1551 {
1552         struct cx231xx_fh *fh = priv;
1553         struct cx231xx *dev = fh->dev;
1554
1555         f->fmt.vbi.sampling_rate = 6750000 * 4;
1556         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1557         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1558         f->fmt.vbi.offset = 0;
1559         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1560             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1561         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1562             PAL_VBI_LINES : NTSC_VBI_LINES;
1563         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1564             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1565         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1566         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1567
1568         return 0;
1569
1570 }
1571
1572 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1573                                   struct v4l2_format *f)
1574 {
1575         struct cx231xx_fh *fh = priv;
1576         struct cx231xx *dev = fh->dev;
1577
1578         f->fmt.vbi.sampling_rate = 6750000 * 4;
1579         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1580         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1581         f->fmt.vbi.offset = 0;
1582         f->fmt.vbi.flags = 0;
1583         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1584             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1585         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1586             PAL_VBI_LINES : NTSC_VBI_LINES;
1587         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1588             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1589         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1590         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1591
1592         return 0;
1593
1594 }
1595
1596 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1597                                   struct v4l2_format *f)
1598 {
1599         struct cx231xx_fh *fh = priv;
1600         struct cx231xx *dev = fh->dev;
1601
1602         if (dev->vbi_stream_on && !fh->stream_on) {
1603                 dev_err(dev->dev,
1604                         "%s device in use by another fh\n", __func__);
1605                 return -EBUSY;
1606         }
1607         return vidioc_try_fmt_vbi_cap(file, priv, f);
1608 }
1609
1610 static int vidioc_reqbufs(struct file *file, void *priv,
1611                           struct v4l2_requestbuffers *rb)
1612 {
1613         struct cx231xx_fh *fh = priv;
1614         struct cx231xx *dev = fh->dev;
1615         int rc;
1616
1617         rc = check_dev(dev);
1618         if (rc < 0)
1619                 return rc;
1620
1621         return videobuf_reqbufs(&fh->vb_vidq, rb);
1622 }
1623
1624 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1625 {
1626         struct cx231xx_fh *fh = priv;
1627         struct cx231xx *dev = fh->dev;
1628         int rc;
1629
1630         rc = check_dev(dev);
1631         if (rc < 0)
1632                 return rc;
1633
1634         return videobuf_querybuf(&fh->vb_vidq, b);
1635 }
1636
1637 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1638 {
1639         struct cx231xx_fh *fh = priv;
1640         struct cx231xx *dev = fh->dev;
1641         int rc;
1642
1643         rc = check_dev(dev);
1644         if (rc < 0)
1645                 return rc;
1646
1647         return videobuf_qbuf(&fh->vb_vidq, b);
1648 }
1649
1650 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1651 {
1652         struct cx231xx_fh *fh = priv;
1653         struct cx231xx *dev = fh->dev;
1654         int rc;
1655
1656         rc = check_dev(dev);
1657         if (rc < 0)
1658                 return rc;
1659
1660         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1661 }
1662
1663 /* ----------------------------------------------------------- */
1664 /* RADIO ESPECIFIC IOCTLS                                      */
1665 /* ----------------------------------------------------------- */
1666
1667 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1668 {
1669         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1670
1671         if (t->index)
1672                 return -EINVAL;
1673
1674         strcpy(t->name, "Radio");
1675
1676         call_all(dev, tuner, g_tuner, t);
1677
1678         return 0;
1679 }
1680 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1681 {
1682         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1683
1684         if (t->index)
1685                 return -EINVAL;
1686
1687         call_all(dev, tuner, s_tuner, t);
1688
1689         return 0;
1690 }
1691
1692 /*
1693  * cx231xx_v4l2_open()
1694  * inits the device and starts isoc transfer
1695  */
1696 static int cx231xx_v4l2_open(struct file *filp)
1697 {
1698         int radio = 0;
1699         struct video_device *vdev = video_devdata(filp);
1700         struct cx231xx *dev = video_drvdata(filp);
1701         struct cx231xx_fh *fh;
1702         enum v4l2_buf_type fh_type = 0;
1703
1704         switch (vdev->vfl_type) {
1705         case VFL_TYPE_GRABBER:
1706                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1707                 break;
1708         case VFL_TYPE_VBI:
1709                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1710                 break;
1711         case VFL_TYPE_RADIO:
1712                 radio = 1;
1713                 break;
1714         }
1715
1716         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1717                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1718                          dev->users);
1719
1720 #if 0
1721         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1722         if (errCode < 0) {
1723                 dev_err(dev->dev,
1724                         "Device locked on digital mode. Can't open analog\n");
1725                 return -EBUSY;
1726         }
1727 #endif
1728
1729         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1730         if (!fh)
1731                 return -ENOMEM;
1732         if (mutex_lock_interruptible(&dev->lock)) {
1733                 kfree(fh);
1734                 return -ERESTARTSYS;
1735         }
1736         fh->dev = dev;
1737         fh->type = fh_type;
1738         filp->private_data = fh;
1739         v4l2_fh_init(&fh->fh, vdev);
1740
1741         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1742                 /* Power up in Analog TV mode */
1743                 if (dev->board.external_av)
1744                         cx231xx_set_power_mode(dev,
1745                                  POLARIS_AVMODE_ENXTERNAL_AV);
1746                 else
1747                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1748
1749 #if 0
1750                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1751 #endif
1752
1753                 /* set video alternate setting */
1754                 cx231xx_set_video_alternate(dev);
1755
1756                 /* Needed, since GPIO might have disabled power of
1757                    some i2c device */
1758                 cx231xx_config_i2c(dev);
1759
1760                 /* device needs to be initialized before isoc transfer */
1761                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1762
1763         }
1764         if (radio) {
1765                 cx231xx_videodbg("video_open: setting radio device\n");
1766
1767                 /* cx231xx_start_radio(dev); */
1768
1769                 call_all(dev, tuner, s_radio);
1770         }
1771
1772         dev->users++;
1773
1774         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1775                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1776                                             NULL, &dev->video_mode.slock,
1777                                             fh->type, V4L2_FIELD_INTERLACED,
1778                                             sizeof(struct cx231xx_buffer),
1779                                             fh, &dev->lock);
1780         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1781                 /* Set the required alternate setting  VBI interface works in
1782                    Bulk mode only */
1783                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1784
1785                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1786                                             NULL, &dev->vbi_mode.slock,
1787                                             fh->type, V4L2_FIELD_SEQ_TB,
1788                                             sizeof(struct cx231xx_buffer),
1789                                             fh, &dev->lock);
1790         }
1791         mutex_unlock(&dev->lock);
1792         v4l2_fh_add(&fh->fh);
1793
1794         return 0;
1795 }
1796
1797 /*
1798  * cx231xx_realease_resources()
1799  * unregisters the v4l2,i2c and usb devices
1800  * called when the device gets disconected or at module unload
1801 */
1802 void cx231xx_release_analog_resources(struct cx231xx *dev)
1803 {
1804
1805         /*FIXME: I2C IR should be disconnected */
1806
1807         if (video_is_registered(&dev->radio_dev))
1808                 video_unregister_device(&dev->radio_dev);
1809         if (video_is_registered(&dev->vbi_dev)) {
1810                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1811                         video_device_node_name(&dev->vbi_dev));
1812                 video_unregister_device(&dev->vbi_dev);
1813         }
1814         if (video_is_registered(&dev->vdev)) {
1815                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1816                         video_device_node_name(&dev->vdev));
1817
1818                 if (dev->board.has_417)
1819                         cx231xx_417_unregister(dev);
1820
1821                 video_unregister_device(&dev->vdev);
1822         }
1823         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1824         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1825 }
1826
1827 /*
1828  * cx231xx_close()
1829  * stops streaming and deallocates all resources allocated by the v4l2
1830  * calls and ioctls
1831  */
1832 static int cx231xx_close(struct file *filp)
1833 {
1834         struct cx231xx_fh *fh = filp->private_data;
1835         struct cx231xx *dev = fh->dev;
1836
1837         cx231xx_videodbg("users=%d\n", dev->users);
1838
1839         cx231xx_videodbg("users=%d\n", dev->users);
1840         if (res_check(fh))
1841                 res_free(fh);
1842
1843         /*
1844          * To workaround error number=-71 on EP0 for VideoGrabber,
1845          *       need exclude following.
1846          * FIXME: It is probably safe to remove most of these, as we're
1847          * now avoiding the alternate setting for INDEX_VANC
1848          */
1849         if (!dev->board.no_alt_vanc)
1850                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1851                         videobuf_stop(&fh->vb_vidq);
1852                         videobuf_mmap_free(&fh->vb_vidq);
1853
1854                         /* the device is already disconnect,
1855                            free the remaining resources */
1856                         if (dev->state & DEV_DISCONNECTED) {
1857                                 if (atomic_read(&dev->devlist_count) > 0) {
1858                                         cx231xx_release_resources(dev);
1859                                         fh->dev = NULL;
1860                                         return 0;
1861                                 }
1862                                 return 0;
1863                         }
1864
1865                         /* do this before setting alternate! */
1866                         cx231xx_uninit_vbi_isoc(dev);
1867
1868                         /* set alternate 0 */
1869                         if (!dev->vbi_or_sliced_cc_mode)
1870                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1871                         else
1872                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1873
1874                         v4l2_fh_del(&fh->fh);
1875                         v4l2_fh_exit(&fh->fh);
1876                         kfree(fh);
1877                         dev->users--;
1878                         wake_up_interruptible_nr(&dev->open, 1);
1879                         return 0;
1880                 }
1881
1882         v4l2_fh_del(&fh->fh);
1883         dev->users--;
1884         if (!dev->users) {
1885                 videobuf_stop(&fh->vb_vidq);
1886                 videobuf_mmap_free(&fh->vb_vidq);
1887
1888                 /* the device is already disconnect,
1889                    free the remaining resources */
1890                 if (dev->state & DEV_DISCONNECTED) {
1891                         cx231xx_release_resources(dev);
1892                         fh->dev = NULL;
1893                         return 0;
1894                 }
1895
1896                 /* Save some power by putting tuner to sleep */
1897                 call_all(dev, core, s_power, 0);
1898
1899                 /* do this before setting alternate! */
1900                 if (dev->USE_ISO)
1901                         cx231xx_uninit_isoc(dev);
1902                 else
1903                         cx231xx_uninit_bulk(dev);
1904                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1905
1906                 /* set alternate 0 */
1907                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1908         }
1909         v4l2_fh_exit(&fh->fh);
1910         kfree(fh);
1911         wake_up_interruptible_nr(&dev->open, 1);
1912         return 0;
1913 }
1914
1915 static int cx231xx_v4l2_close(struct file *filp)
1916 {
1917         struct cx231xx_fh *fh = filp->private_data;
1918         struct cx231xx *dev = fh->dev;
1919         int rc;
1920
1921         mutex_lock(&dev->lock);
1922         rc = cx231xx_close(filp);
1923         mutex_unlock(&dev->lock);
1924         return rc;
1925 }
1926
1927 /*
1928  * cx231xx_v4l2_read()
1929  * will allocate buffers when called for the first time
1930  */
1931 static ssize_t
1932 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1933                   loff_t *pos)
1934 {
1935         struct cx231xx_fh *fh = filp->private_data;
1936         struct cx231xx *dev = fh->dev;
1937         int rc;
1938
1939         rc = check_dev(dev);
1940         if (rc < 0)
1941                 return rc;
1942
1943         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1944             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1945                 rc = res_get(fh);
1946
1947                 if (unlikely(rc < 0))
1948                         return rc;
1949
1950                 if (mutex_lock_interruptible(&dev->lock))
1951                         return -ERESTARTSYS;
1952                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1953                                             filp->f_flags & O_NONBLOCK);
1954                 mutex_unlock(&dev->lock);
1955                 return rc;
1956         }
1957         return 0;
1958 }
1959
1960 /*
1961  * cx231xx_v4l2_poll()
1962  * will allocate buffers when called for the first time
1963  */
1964 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
1965 {
1966         unsigned long req_events = poll_requested_events(wait);
1967         struct cx231xx_fh *fh = filp->private_data;
1968         struct cx231xx *dev = fh->dev;
1969         unsigned res = 0;
1970         int rc;
1971
1972         rc = check_dev(dev);
1973         if (rc < 0)
1974                 return POLLERR;
1975
1976         rc = res_get(fh);
1977
1978         if (unlikely(rc < 0))
1979                 return POLLERR;
1980
1981         if (v4l2_event_pending(&fh->fh))
1982                 res |= POLLPRI;
1983         else
1984                 poll_wait(filp, &fh->fh.wait, wait);
1985
1986         if (!(req_events & (POLLIN | POLLRDNORM)))
1987                 return res;
1988
1989         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
1990             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
1991                 mutex_lock(&dev->lock);
1992                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1993                 mutex_unlock(&dev->lock);
1994                 return res;
1995         }
1996         return res | POLLERR;
1997 }
1998
1999 /*
2000  * cx231xx_v4l2_mmap()
2001  */
2002 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2003 {
2004         struct cx231xx_fh *fh = filp->private_data;
2005         struct cx231xx *dev = fh->dev;
2006         int rc;
2007
2008         rc = check_dev(dev);
2009         if (rc < 0)
2010                 return rc;
2011
2012         rc = res_get(fh);
2013
2014         if (unlikely(rc < 0))
2015                 return rc;
2016
2017         if (mutex_lock_interruptible(&dev->lock))
2018                 return -ERESTARTSYS;
2019         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2020         mutex_unlock(&dev->lock);
2021
2022         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2023                          (unsigned long)vma->vm_start,
2024                          (unsigned long)vma->vm_end -
2025                          (unsigned long)vma->vm_start, rc);
2026
2027         return rc;
2028 }
2029
2030 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2031         .owner   = THIS_MODULE,
2032         .open    = cx231xx_v4l2_open,
2033         .release = cx231xx_v4l2_close,
2034         .read    = cx231xx_v4l2_read,
2035         .poll    = cx231xx_v4l2_poll,
2036         .mmap    = cx231xx_v4l2_mmap,
2037         .unlocked_ioctl   = video_ioctl2,
2038 };
2039
2040 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2041         .vidioc_querycap               = cx231xx_querycap,
2042         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2043         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2044         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2045         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2046         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2047         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2048         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
2049         .vidioc_cropcap                = vidioc_cropcap,
2050         .vidioc_reqbufs                = vidioc_reqbufs,
2051         .vidioc_querybuf               = vidioc_querybuf,
2052         .vidioc_qbuf                   = vidioc_qbuf,
2053         .vidioc_dqbuf                  = vidioc_dqbuf,
2054         .vidioc_s_std                  = vidioc_s_std,
2055         .vidioc_g_std                  = vidioc_g_std,
2056         .vidioc_enum_input             = cx231xx_enum_input,
2057         .vidioc_g_input                = cx231xx_g_input,
2058         .vidioc_s_input                = cx231xx_s_input,
2059         .vidioc_streamon               = vidioc_streamon,
2060         .vidioc_streamoff              = vidioc_streamoff,
2061         .vidioc_g_tuner                = cx231xx_g_tuner,
2062         .vidioc_s_tuner                = cx231xx_s_tuner,
2063         .vidioc_g_frequency            = cx231xx_g_frequency,
2064         .vidioc_s_frequency            = cx231xx_s_frequency,
2065 #ifdef CONFIG_VIDEO_ADV_DEBUG
2066         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2067         .vidioc_g_register             = cx231xx_g_register,
2068         .vidioc_s_register             = cx231xx_s_register,
2069 #endif
2070         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2071         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2072 };
2073
2074 static struct video_device cx231xx_vbi_template;
2075
2076 static const struct video_device cx231xx_video_template = {
2077         .fops         = &cx231xx_v4l_fops,
2078         .release      = video_device_release_empty,
2079         .ioctl_ops    = &video_ioctl_ops,
2080         .tvnorms      = V4L2_STD_ALL,
2081 };
2082
2083 static const struct v4l2_file_operations radio_fops = {
2084         .owner   = THIS_MODULE,
2085         .open   = cx231xx_v4l2_open,
2086         .release = cx231xx_v4l2_close,
2087         .poll = v4l2_ctrl_poll,
2088         .unlocked_ioctl = video_ioctl2,
2089 };
2090
2091 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2092         .vidioc_querycap    = cx231xx_querycap,
2093         .vidioc_g_tuner     = radio_g_tuner,
2094         .vidioc_s_tuner     = radio_s_tuner,
2095         .vidioc_g_frequency = cx231xx_g_frequency,
2096         .vidioc_s_frequency = cx231xx_s_frequency,
2097 #ifdef CONFIG_VIDEO_ADV_DEBUG
2098         .vidioc_g_chip_info = cx231xx_g_chip_info,
2099         .vidioc_g_register  = cx231xx_g_register,
2100         .vidioc_s_register  = cx231xx_s_register,
2101 #endif
2102         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2103         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2104 };
2105
2106 static struct video_device cx231xx_radio_template = {
2107         .name      = "cx231xx-radio",
2108         .fops      = &radio_fops,
2109         .ioctl_ops = &radio_ioctl_ops,
2110 };
2111
2112 /******************************** usb interface ******************************/
2113
2114 static void cx231xx_vdev_init(struct cx231xx *dev,
2115                 struct video_device *vfd,
2116                 const struct video_device *template,
2117                 const char *type_name)
2118 {
2119         *vfd = *template;
2120         vfd->v4l2_dev = &dev->v4l2_dev;
2121         vfd->release = video_device_release_empty;
2122         vfd->lock = &dev->lock;
2123
2124         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2125
2126         video_set_drvdata(vfd, dev);
2127         if (dev->tuner_type == TUNER_ABSENT) {
2128                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2129                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2130                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2131                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2132         }
2133 }
2134
2135 int cx231xx_register_analog_devices(struct cx231xx *dev)
2136 {
2137         int ret;
2138
2139         dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2140
2141         /* set default norm */
2142         dev->norm = V4L2_STD_PAL;
2143         dev->width = norm_maxw(dev);
2144         dev->height = norm_maxh(dev);
2145         dev->interlaced = 0;
2146
2147         /* Analog specific initialization */
2148         dev->format = &format[0];
2149
2150         /* Set the initial input */
2151         video_mux(dev, dev->video_input);
2152
2153         call_all(dev, video, s_std, dev->norm);
2154
2155         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2156         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2157
2158         if (dev->sd_cx25840) {
2159                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2160                                 dev->sd_cx25840->ctrl_handler, NULL);
2161                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2162                                 dev->sd_cx25840->ctrl_handler,
2163                                 v4l2_ctrl_radio_filter);
2164         }
2165
2166         if (dev->ctrl_handler.error)
2167                 return dev->ctrl_handler.error;
2168         if (dev->radio_ctrl_handler.error)
2169                 return dev->radio_ctrl_handler.error;
2170
2171         /* enable vbi capturing */
2172         /* write code here...  */
2173
2174         /* allocate and fill video video_device struct */
2175         cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2176 #if defined(CONFIG_MEDIA_CONTROLLER)
2177         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2178         ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0);
2179         if (ret < 0)
2180                 dev_err(dev->dev, "failed to initialize video media entity!\n");
2181 #endif
2182         dev->vdev.ctrl_handler = &dev->ctrl_handler;
2183         /* register v4l2 video video_device */
2184         ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2185                                     video_nr[dev->devno]);
2186         if (ret) {
2187                 dev_err(dev->dev,
2188                         "unable to register video device (error=%i).\n",
2189                         ret);
2190                 return ret;
2191         }
2192
2193         dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2194                 video_device_node_name(&dev->vdev));
2195
2196         /* Initialize VBI template */
2197         cx231xx_vbi_template = cx231xx_video_template;
2198         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2199
2200         /* Allocate and fill vbi video_device struct */
2201         cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2202
2203 #if defined(CONFIG_MEDIA_CONTROLLER)
2204         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2205         ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0);
2206         if (ret < 0)
2207                 dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2208 #endif
2209         dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2210         /* register v4l2 vbi video_device */
2211         ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2212                                     vbi_nr[dev->devno]);
2213         if (ret < 0) {
2214                 dev_err(dev->dev, "unable to register vbi device\n");
2215                 return ret;
2216         }
2217
2218         dev_info(dev->dev, "Registered VBI device %s\n",
2219                 video_device_node_name(&dev->vbi_dev));
2220
2221         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2222                 cx231xx_vdev_init(dev, &dev->radio_dev,
2223                                 &cx231xx_radio_template, "radio");
2224                 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2225                 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2226                                             radio_nr[dev->devno]);
2227                 if (ret < 0) {
2228                         dev_err(dev->dev,
2229                                 "can't register radio device\n");
2230                         return ret;
2231                 }
2232                 dev_info(dev->dev, "Registered radio device as %s\n",
2233                         video_device_node_name(&dev->radio_dev));
2234         }
2235
2236         return 0;
2237 }