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/drv-intf/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 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->function == MEDIA_ENT_F_ATV_DECODER) {
 123                         decoder = entity;
 124                         break;
 125                 }
 126         }
 127         if (!decoder)
 128                 return 0;
 129
 130         list_for_each_entry(link, &decoder->links, list) {
 131                 if (link->sink->entity == decoder) {
 132                         found_link = link;
 133                         if (link->flags & MEDIA_LNK_FL_ENABLED)
 134                                 active_links++;
 135                         break;
 136                 }
 137         }
 138
 139         if (active_links == 1 || !found_link)
 140                 return 0;
 141
 142         source = found_link->source->entity;
 143         list_for_each_entry(link, &source->links, list) {
 144                 struct media_entity *sink;
 145                 int flags = 0;
 146
 147                 sink = link->sink->entity;
 148
 149                 if (sink == entity)
 150                         flags = MEDIA_LNK_FL_ENABLED;
 151
 152                 ret = media_entity_setup_link(link, flags);
 153                 if (ret) {
 154                         dev_err(dev->dev,
 155                                 "Couldn't change link %s->%s to %s. Error %d\n",
 156                                 source->name, sink->name,
 157                                 flags ? "enabled" : "disabled",
 158                                 ret);
 159                         return ret;
 160                 } else
 161                         dev_dbg(dev->dev,
 162                                 "link %s->%s was %s\n",
 163                                 source->name, sink->name,
 164                                 flags ? "ENABLED" : "disabled");
 165         }
 166 #endif
 167         return 0;
 168 }
 169
 170 /* ------------------------------------------------------------------
 171         Video buffer and parser functions
 172    ------------------------------------------------------------------*/
 173
 174 /*
 175  * Announces that a buffer were filled and request the next
 176  */
 177 static inline void buffer_filled(struct cx231xx *dev,
 178                                  struct cx231xx_dmaqueue *dma_q,
 179                                  struct cx231xx_buffer *buf)
 180 {
 181         /* Advice that buffer was filled */
 182         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 183         buf->vb.state = VIDEOBUF_DONE;
 184         buf->vb.field_count++;
 185         v4l2_get_timestamp(&buf->vb.ts);
 186
 187         if (dev->USE_ISO)
 188                 dev->video_mode.isoc_ctl.buf = NULL;
 189         else
 190                 dev->video_mode.bulk_ctl.buf = NULL;
 191
 192         list_del(&buf->vb.queue);
 193         wake_up(&buf->vb.done);
 194 }
 195
 196 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 197 {
 198         char *errmsg = "Unknown";
 199
 200         switch (status) {
 201         case -ENOENT:
 202                 errmsg = "unlinked synchronuously";
 203                 break;
 204         case -ECONNRESET:
 205                 errmsg = "unlinked asynchronuously";
 206                 break;
 207         case -ENOSR:
 208                 errmsg = "Buffer error (overrun)";
 209                 break;
 210         case -EPIPE:
 211                 errmsg = "Stalled (device not responding)";
 212                 break;
 213         case -EOVERFLOW:
 214                 errmsg = "Babble (bad cable?)";
 215                 break;
 216         case -EPROTO:
 217                 errmsg = "Bit-stuff error (bad cable?)";
 218                 break;
 219         case -EILSEQ:
 220                 errmsg = "CRC/Timeout (could be anything)";
 221                 break;
 222         case -ETIME:
 223                 errmsg = "Device does not respond";
 224                 break;
 225         }
 226         if (packet < 0) {
 227                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 228         } else {
 229                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 230                                 packet, status, errmsg);
 231         }
 232 }
 233
 234 /*
 235  * video-buf generic routine to get the next available buffer
 236  */
 237 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 238                                 struct cx231xx_buffer **buf)
 239 {
 240         struct cx231xx_video_mode *vmode =
 241             container_of(dma_q, struct cx231xx_video_mode, vidq);
 242         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 243
 244         char *outp;
 245
 246         if (list_empty(&dma_q->active)) {
 247                 cx231xx_isocdbg("No active queue to serve\n");
 248                 if (dev->USE_ISO)
 249                         dev->video_mode.isoc_ctl.buf = NULL;
 250                 else
 251                         dev->video_mode.bulk_ctl.buf = NULL;
 252                 *buf = NULL;
 253                 return;
 254         }
 255
 256         /* Get the next buffer */
 257         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 258
 259         /* Cleans up buffer - Useful for testing for frame/URB loss */
 260         outp = videobuf_to_vmalloc(&(*buf)->vb);
 261         memset(outp, 0, (*buf)->vb.size);
 262
 263         if (dev->USE_ISO)
 264                 dev->video_mode.isoc_ctl.buf = *buf;
 265         else
 266                 dev->video_mode.bulk_ctl.buf = *buf;
 267
 268         return;
 269 }
 270
 271 /*
 272  * Controls the isoc copy of each urb packet
 273  */
 274 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 275 {
 276         struct cx231xx_dmaqueue *dma_q = urb->context;
 277         int i;
 278         unsigned char *p_buffer;
 279         u32 bytes_parsed = 0, buffer_size = 0;
 280         u8 sav_eav = 0;
 281
 282         if (!dev)
 283                 return 0;
 284
 285         if (dev->state & DEV_DISCONNECTED)
 286                 return 0;
 287
 288         if (urb->status < 0) {
 289                 print_err_status(dev, -1, urb->status);
 290                 if (urb->status == -ENOENT)
 291                         return 0;
 292         }
 293
 294         for (i = 0; i < urb->number_of_packets; i++) {
 295                 int status = urb->iso_frame_desc[i].status;
 296
 297                 if (status < 0) {
 298                         print_err_status(dev, i, status);
 299                         if (urb->iso_frame_desc[i].status != -EPROTO)
 300                                 continue;
 301                 }
 302
 303                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 304                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 305                         continue;
 306                 }
 307                 if (urb->iso_frame_desc[i].actual_length >
 308                     dev->video_mode.max_pkt_size) {
 309                         cx231xx_isocdbg("packet bigger than packet size");
 310                         continue;
 311                 }
 312
 313                 /*  get buffer pointer and length */
 314                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 315                 buffer_size = urb->iso_frame_desc[i].actual_length;
 316                 bytes_parsed = 0;
 317
 318                 if (dma_q->is_partial_line) {
 319                         /* Handle the case of a partial line */
 320                         sav_eav = dma_q->last_sav;
 321                 } else {
 322                         /* Check for a SAV/EAV overlapping
 323                                 the buffer boundary */
 324                         sav_eav =
 325                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 326                                                           dma_q->partial_buf,
 327                                                           &bytes_parsed);
 328                 }
 329
 330                 sav_eav &= 0xF0;
 331                 /* Get the first line if we have some portion of an SAV/EAV from
 332                    the last buffer or a partial line  */
 333                 if (sav_eav) {
 334                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 335                                 sav_eav,        /* SAV/EAV */
 336                                 p_buffer + bytes_parsed,        /* p_buffer */
 337                                 buffer_size - bytes_parsed);/* buf size */
 338                 }
 339
 340                 /* Now parse data that is completely in this buffer */
 341                 /* dma_q->is_partial_line = 0;  */
 342
 343                 while (bytes_parsed < buffer_size) {
 344                         u32 bytes_used = 0;
 345
 346                         sav_eav = cx231xx_find_next_SAV_EAV(
 347                                 p_buffer + bytes_parsed,        /* p_buffer */
 348                                 buffer_size - bytes_parsed,     /* buf size */
 349                                 &bytes_used);/* bytes used to get SAV/EAV */
 350
 351                         bytes_parsed += bytes_used;
 352
 353                         sav_eav &= 0xF0;
 354                         if (sav_eav && (bytes_parsed < buffer_size)) {
 355                                 bytes_parsed += cx231xx_get_video_line(dev,
 356                                         dma_q, sav_eav, /* SAV/EAV */
 357                                         p_buffer + bytes_parsed,/* p_buffer */
 358                                         buffer_size - bytes_parsed);/*buf size*/
 359                         }
 360                 }
 361
 362                 /* Save the last four bytes of the buffer so we can check the
 363                    buffer boundary condition next time */
 364                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 365                 bytes_parsed = 0;
 366
 367         }
 368         return 1;
 369 }
 370
 371 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 372 {
 373         struct cx231xx_dmaqueue *dma_q = urb->context;
 374         unsigned char *p_buffer;
 375         u32 bytes_parsed = 0, buffer_size = 0;
 376         u8 sav_eav = 0;
 377
 378         if (!dev)
 379                 return 0;
 380
 381         if (dev->state & DEV_DISCONNECTED)
 382                 return 0;
 383
 384         if (urb->status < 0) {
 385                 print_err_status(dev, -1, urb->status);
 386                 if (urb->status == -ENOENT)
 387                         return 0;
 388         }
 389
 390         if (1) {
 391
 392                 /*  get buffer pointer and length */
 393                 p_buffer = urb->transfer_buffer;
 394                 buffer_size = urb->actual_length;
 395                 bytes_parsed = 0;
 396
 397                 if (dma_q->is_partial_line) {
 398                         /* Handle the case of a partial line */
 399                         sav_eav = dma_q->last_sav;
 400                 } else {
 401                         /* Check for a SAV/EAV overlapping
 402                                 the buffer boundary */
 403                         sav_eav =
 404                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 405                                                           dma_q->partial_buf,
 406                                                           &bytes_parsed);
 407                 }
 408
 409                 sav_eav &= 0xF0;
 410                 /* Get the first line if we have some portion of an SAV/EAV from
 411                    the last buffer or a partial line  */
 412                 if (sav_eav) {
 413                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 414                                 sav_eav,        /* SAV/EAV */
 415                                 p_buffer + bytes_parsed,        /* p_buffer */
 416                                 buffer_size - bytes_parsed);/* buf size */
 417                 }
 418
 419                 /* Now parse data that is completely in this buffer */
 420                 /* dma_q->is_partial_line = 0;  */
 421
 422                 while (bytes_parsed < buffer_size) {
 423                         u32 bytes_used = 0;
 424
 425                         sav_eav = cx231xx_find_next_SAV_EAV(
 426                                 p_buffer + bytes_parsed,        /* p_buffer */
 427                                 buffer_size - bytes_parsed,     /* buf size */
 428                                 &bytes_used);/* bytes used to get SAV/EAV */
 429
 430                         bytes_parsed += bytes_used;
 431
 432                         sav_eav &= 0xF0;
 433                         if (sav_eav && (bytes_parsed < buffer_size)) {
 434                                 bytes_parsed += cx231xx_get_video_line(dev,
 435                                         dma_q, sav_eav, /* SAV/EAV */
 436                                         p_buffer + bytes_parsed,/* p_buffer */
 437                                         buffer_size - bytes_parsed);/*buf size*/
 438                         }
 439                 }
 440
 441                 /* Save the last four bytes of the buffer so we can check the
 442                    buffer boundary condition next time */
 443                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 444                 bytes_parsed = 0;
 445
 446         }
 447         return 1;
 448 }
 449
 450
 451 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 452                                  u32 *p_bytes_used)
 453 {
 454         u32 bytes_used;
 455         u8 boundary_bytes[8];
 456         u8 sav_eav = 0;
 457
 458         *p_bytes_used = 0;
 459
 460         /* Create an array of the last 4 bytes of the last buffer and the first
 461            4 bytes of the current buffer. */
 462
 463         memcpy(boundary_bytes, partial_buf, 4);
 464         memcpy(boundary_bytes + 4, p_buffer, 4);
 465
 466         /* Check for the SAV/EAV in the boundary buffer */
 467         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 468                                             &bytes_used);
 469
 470         if (sav_eav) {
 471                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 472                    only those used in the new buffer */
 473                 *p_bytes_used = bytes_used - 4;
 474         }
 475
 476         return sav_eav;
 477 }
 478
 479 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 480 {
 481         u32 i;
 482         u8 sav_eav = 0;
 483
 484         /*
 485          * Don't search if the buffer size is less than 4.  It causes a page
 486          * fault since buffer_size - 4 evaluates to a large number in that
 487          * case.
 488          */
 489         if (buffer_size < 4) {
 490                 *p_bytes_used = buffer_size;
 491                 return 0;
 492         }
 493
 494         for (i = 0; i < (buffer_size - 3); i++) {
 495
 496                 if ((p_buffer[i] == 0xFF) &&
 497                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 498
 499                         *p_bytes_used = i + 4;
 500                         sav_eav = p_buffer[i + 3];
 501                         return sav_eav;
 502                 }
 503         }
 504
 505         *p_bytes_used = buffer_size;
 506         return 0;
 507 }
 508
 509 u32 cx231xx_get_video_line(struct cx231xx *dev,
 510                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 511                            u8 *p_buffer, u32 buffer_size)
 512 {
 513         u32 bytes_copied = 0;
 514         int current_field = -1;
 515
 516         switch (sav_eav) {
 517         case SAV_ACTIVE_VIDEO_FIELD1:
 518                 /* looking for skipped line which occurred in PAL 720x480 mode.
 519                    In this case, there will be no active data contained
 520                    between the SAV and EAV */
 521                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 522                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 523                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 524                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 525                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 526                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 527                         return bytes_copied;
 528                 current_field = 1;
 529                 break;
 530
 531         case SAV_ACTIVE_VIDEO_FIELD2:
 532                 /* looking for skipped line which occurred in PAL 720x480 mode.
 533                    In this case, there will be no active data contained between
 534                    the SAV and EAV */
 535                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 536                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 537                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 538                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 539                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 540                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 541                         return bytes_copied;
 542                 current_field = 2;
 543                 break;
 544         }
 545
 546         dma_q->last_sav = sav_eav;
 547
 548         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 549                                                buffer_size, current_field);
 550
 551         return bytes_copied;
 552 }
 553
 554 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 555                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 556                             u32 length, int field_number)
 557 {
 558         u32 bytes_to_copy;
 559         struct cx231xx_buffer *buf;
 560         u32 _line_size = dev->width * 2;
 561
 562         if (dma_q->current_field != field_number)
 563                 cx231xx_reset_video_buffer(dev, dma_q);
 564
 565         /* get the buffer pointer */
 566         if (dev->USE_ISO)
 567                 buf = dev->video_mode.isoc_ctl.buf;
 568         else
 569                 buf = dev->video_mode.bulk_ctl.buf;
 570
 571         /* Remember the field number for next time */
 572         dma_q->current_field = field_number;
 573
 574         bytes_to_copy = dma_q->bytes_left_in_line;
 575         if (bytes_to_copy > length)
 576                 bytes_to_copy = length;
 577
 578         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 579                 dma_q->bytes_left_in_line -= bytes_to_copy;
 580                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 581                                           0 : 1;
 582                 return 0;
 583         }
 584
 585         dma_q->is_partial_line = 1;
 586
 587         /* If we don't have a buffer, just return the number of bytes we would
 588            have copied if we had a buffer. */
 589         if (!buf) {
 590                 dma_q->bytes_left_in_line -= bytes_to_copy;
 591                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 592                                          ? 0 : 1;
 593                 return bytes_to_copy;
 594         }
 595
 596         /* copy the data to video buffer */
 597         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 598
 599         dma_q->pos += bytes_to_copy;
 600         dma_q->bytes_left_in_line -= bytes_to_copy;
 601
 602         if (dma_q->bytes_left_in_line == 0) {
 603                 dma_q->bytes_left_in_line = _line_size;
 604                 dma_q->lines_completed++;
 605                 dma_q->is_partial_line = 0;
 606
 607                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 608                         buffer_filled(dev, dma_q, buf);
 609
 610                         dma_q->pos = 0;
 611                         buf = NULL;
 612                         dma_q->lines_completed = 0;
 613                 }
 614         }
 615
 616         return bytes_to_copy;
 617 }
 618
 619 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 620                                 struct cx231xx_dmaqueue *dma_q)
 621 {
 622         struct cx231xx_buffer *buf;
 623
 624         /* handle the switch from field 1 to field 2 */
 625         if (dma_q->current_field == 1) {
 626                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 627                         dma_q->field1_done = 1;
 628                 else
 629                         dma_q->field1_done = 0;
 630         }
 631
 632         if (dev->USE_ISO)
 633                 buf = dev->video_mode.isoc_ctl.buf;
 634         else
 635                 buf = dev->video_mode.bulk_ctl.buf;
 636
 637         if (buf == NULL) {
 638                 /* first try to get the buffer */
 639                 get_next_buf(dma_q, &buf);
 640
 641                 dma_q->pos = 0;
 642                 dma_q->field1_done = 0;
 643                 dma_q->current_field = -1;
 644         }
 645
 646         /* reset the counters */
 647         dma_q->bytes_left_in_line = dev->width << 1;
 648         dma_q->lines_completed = 0;
 649 }
 650
 651 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 652                     u8 *p_buffer, u32 bytes_to_copy)
 653 {
 654         u8 *p_out_buffer = NULL;
 655         u32 current_line_bytes_copied = 0;
 656         struct cx231xx_buffer *buf;
 657         u32 _line_size = dev->width << 1;
 658         void *startwrite;
 659         int offset, lencopy;
 660
 661         if (dev->USE_ISO)
 662                 buf = dev->video_mode.isoc_ctl.buf;
 663         else
 664                 buf = dev->video_mode.bulk_ctl.buf;
 665
 666         if (buf == NULL)
 667                 return -1;
 668
 669         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 670
 671         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 672
 673         /* Offset field 2 one line from the top of the buffer */
 674         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 675
 676         /* Offset for field 2 */
 677         startwrite = p_out_buffer + offset;
 678
 679         /* lines already completed in the current field */
 680         startwrite += (dma_q->lines_completed * _line_size * 2);
 681
 682         /* bytes already completed in the current line */
 683         startwrite += current_line_bytes_copied;
 684
 685         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 686                   bytes_to_copy : dma_q->bytes_left_in_line;
 687
 688         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 689                 return 0;
 690
 691         /* The below copies the UYVY data straight into video buffer */
 692         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 693
 694         return 0;
 695 }
 696
 697 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 698 {
 699         u16 i;
 700
 701         if (len <= 0)
 702                 return;
 703
 704         for (i = 0; i < len / 2; i++)
 705                 to[i] = (from[i] << 8) | (from[i] >> 8);
 706 }
 707
 708 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 709 {
 710         u8 buffer_complete = 0;
 711
 712         /* Dual field stream */
 713         buffer_complete = ((dma_q->current_field == 2) &&
 714                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 715                             dma_q->field1_done);
 716
 717         return buffer_complete;
 718 }
 719
 720 /* ------------------------------------------------------------------
 721         Videobuf operations
 722    ------------------------------------------------------------------*/
 723
 724 static int
 725 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 726 {
 727         struct cx231xx_fh *fh = vq->priv_data;
 728         struct cx231xx *dev = fh->dev;
 729
 730         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 731         if (0 == *count)
 732                 *count = CX231XX_DEF_BUF;
 733
 734         if (*count < CX231XX_MIN_BUF)
 735                 *count = CX231XX_MIN_BUF;
 736
 737
 738         cx231xx_enable_analog_tuner(dev);
 739
 740         return 0;
 741 }
 742
 743 /* This is called *without* dev->slock held; please keep it that way */
 744 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 745 {
 746         struct cx231xx_fh *fh = vq->priv_data;
 747         struct cx231xx *dev = fh->dev;
 748         unsigned long flags = 0;
 749
 750         BUG_ON(in_interrupt());
 751
 752         /* We used to wait for the buffer to finish here, but this didn't work
 753            because, as we were keeping the state as VIDEOBUF_QUEUED,
 754            videobuf_queue_cancel marked it as finished for us.
 755            (Also, it could wedge forever if the hardware was misconfigured.)
 756
 757            This should be safe; by the time we get here, the buffer isn't
 758            queued anymore. If we ever start marking the buffers as
 759            VIDEOBUF_ACTIVE, it won't be, though.
 760          */
 761         spin_lock_irqsave(&dev->video_mode.slock, flags);
 762         if (dev->USE_ISO) {
 763                 if (dev->video_mode.isoc_ctl.buf == buf)
 764                         dev->video_mode.isoc_ctl.buf = NULL;
 765         } else {
 766                 if (dev->video_mode.bulk_ctl.buf == buf)
 767                         dev->video_mode.bulk_ctl.buf = NULL;
 768         }
 769         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 770
 771         videobuf_vmalloc_free(&buf->vb);
 772         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 773 }
 774
 775 static int
 776 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 777                enum v4l2_field field)
 778 {
 779         struct cx231xx_fh *fh = vq->priv_data;
 780         struct cx231xx_buffer *buf =
 781             container_of(vb, struct cx231xx_buffer, vb);
 782         struct cx231xx *dev = fh->dev;
 783         int rc = 0, urb_init = 0;
 784
 785         /* The only currently supported format is 16 bits/pixel */
 786         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 787                         + 7) >> 3;
 788         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 789                 return -EINVAL;
 790
 791         buf->vb.width = dev->width;
 792         buf->vb.height = dev->height;
 793         buf->vb.field = field;
 794
 795         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 796                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 797                 if (rc < 0)
 798                         goto fail;
 799         }
 800
 801         if (dev->USE_ISO) {
 802                 if (!dev->video_mode.isoc_ctl.num_bufs)
 803                         urb_init = 1;
 804         } else {
 805                 if (!dev->video_mode.bulk_ctl.num_bufs)
 806                         urb_init = 1;
 807         }
 808         dev_dbg(dev->dev,
 809                 "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 810                 urb_init, dev->video_mode.max_pkt_size);
 811         if (urb_init) {
 812                 dev->mode_tv = 0;
 813                 if (dev->USE_ISO)
 814                         rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 815                                        CX231XX_NUM_BUFS,
 816                                        dev->video_mode.max_pkt_size,
 817                                        cx231xx_isoc_copy);
 818                 else
 819                         rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 820                                        CX231XX_NUM_BUFS,
 821                                        dev->video_mode.max_pkt_size,
 822                                        cx231xx_bulk_copy);
 823                 if (rc < 0)
 824                         goto fail;
 825         }
 826
 827         buf->vb.state = VIDEOBUF_PREPARED;
 828
 829         return 0;
 830
 831 fail:
 832         free_buffer(vq, buf);
 833         return rc;
 834 }
 835
 836 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 837 {
 838         struct cx231xx_buffer *buf =
 839             container_of(vb, struct cx231xx_buffer, vb);
 840         struct cx231xx_fh *fh = vq->priv_data;
 841         struct cx231xx *dev = fh->dev;
 842         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 843
 844         buf->vb.state = VIDEOBUF_QUEUED;
 845         list_add_tail(&buf->vb.queue, &vidq->active);
 846
 847 }
 848
 849 static void buffer_release(struct videobuf_queue *vq,
 850                            struct videobuf_buffer *vb)
 851 {
 852         struct cx231xx_buffer *buf =
 853             container_of(vb, struct cx231xx_buffer, vb);
 854         struct cx231xx_fh *fh = vq->priv_data;
 855         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 856
 857         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 858
 859         free_buffer(vq, buf);
 860 }
 861
 862 static struct videobuf_queue_ops cx231xx_video_qops = {
 863         .buf_setup = buffer_setup,
 864         .buf_prepare = buffer_prepare,
 865         .buf_queue = buffer_queue,
 866         .buf_release = buffer_release,
 867 };
 868
 869 /*********************  v4l2 interface  **************************************/
 870
 871 void video_mux(struct cx231xx *dev, int index)
 872 {
 873         dev->video_input = index;
 874         dev->ctl_ainput = INPUT(index)->amux;
 875
 876         cx231xx_set_video_input_mux(dev, index);
 877
 878         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 879
 880         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 881
 882         dev_dbg(dev->dev, "video_mux : %d\n", index);
 883
 884         /* do mode control overrides if required */
 885         cx231xx_do_mode_ctrl_overrides(dev);
 886 }
 887
 888 /* Usage lock check functions */
 889 static int res_get(struct cx231xx_fh *fh)
 890 {
 891         struct cx231xx *dev = fh->dev;
 892         int rc = 0;
 893
 894         /* This instance already has stream_on */
 895         if (fh->stream_on)
 896                 return rc;
 897
 898         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 899                 if (dev->stream_on)
 900                         return -EBUSY;
 901                 dev->stream_on = 1;
 902         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 903                 if (dev->vbi_stream_on)
 904                         return -EBUSY;
 905                 dev->vbi_stream_on = 1;
 906         } else
 907                 return -EINVAL;
 908
 909         fh->stream_on = 1;
 910
 911         return rc;
 912 }
 913
 914 static int res_check(struct cx231xx_fh *fh)
 915 {
 916         return fh->stream_on;
 917 }
 918
 919 static void res_free(struct cx231xx_fh *fh)
 920 {
 921         struct cx231xx *dev = fh->dev;
 922
 923         fh->stream_on = 0;
 924
 925         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 926                 dev->stream_on = 0;
 927         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 928                 dev->vbi_stream_on = 0;
 929 }
 930
 931 static int check_dev(struct cx231xx *dev)
 932 {
 933         if (dev->state & DEV_DISCONNECTED) {
 934                 dev_err(dev->dev, "v4l2 ioctl: device not present\n");
 935                 return -ENODEV;
 936         }
 937         return 0;
 938 }
 939
 940 /* ------------------------------------------------------------------
 941         IOCTL vidioc handling
 942    ------------------------------------------------------------------*/
 943
 944 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 945                                 struct v4l2_format *f)
 946 {
 947         struct cx231xx_fh *fh = priv;
 948         struct cx231xx *dev = fh->dev;
 949
 950         f->fmt.pix.width = dev->width;
 951         f->fmt.pix.height = dev->height;
 952         f->fmt.pix.pixelformat = dev->format->fourcc;
 953         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 954         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 955         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 956
 957         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 958
 959         return 0;
 960 }
 961
 962 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 963 {
 964         unsigned int i;
 965
 966         for (i = 0; i < ARRAY_SIZE(format); i++)
 967                 if (format[i].fourcc == fourcc)
 968                         return &format[i];
 969
 970         return NULL;
 971 }
 972
 973 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 974                                   struct v4l2_format *f)
 975 {
 976         struct cx231xx_fh *fh = priv;
 977         struct cx231xx *dev = fh->dev;
 978         unsigned int width = f->fmt.pix.width;
 979         unsigned int height = f->fmt.pix.height;
 980         unsigned int maxw = norm_maxw(dev);
 981         unsigned int maxh = norm_maxh(dev);
 982         struct cx231xx_fmt *fmt;
 983
 984         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 985         if (!fmt) {
 986                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 987                                  f->fmt.pix.pixelformat);
 988                 return -EINVAL;
 989         }
 990
 991         /* width must even because of the YUYV format
 992            height must be even because of interlacing */
 993         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 994
 995         f->fmt.pix.width = width;
 996         f->fmt.pix.height = height;
 997         f->fmt.pix.pixelformat = fmt->fourcc;
 998         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
 999         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1000         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1001         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1002
1003         return 0;
1004 }
1005
1006 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1007                                 struct v4l2_format *f)
1008 {
1009         struct cx231xx_fh *fh = priv;
1010         struct cx231xx *dev = fh->dev;
1011         int rc;
1012         struct cx231xx_fmt *fmt;
1013         struct v4l2_subdev_format format = {
1014                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1015         };
1016
1017         rc = check_dev(dev);
1018         if (rc < 0)
1019                 return rc;
1020
1021         vidioc_try_fmt_vid_cap(file, priv, f);
1022
1023         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1024         if (!fmt)
1025                 return -EINVAL;
1026
1027         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1028                 dev_err(dev->dev, "%s: queue busy\n", __func__);
1029                 return -EBUSY;
1030         }
1031
1032         if (dev->stream_on && !fh->stream_on) {
1033                 dev_err(dev->dev,
1034                         "%s: device in use by another fh\n", __func__);
1035                 return -EBUSY;
1036         }
1037
1038         /* set new image size */
1039         dev->width = f->fmt.pix.width;
1040         dev->height = f->fmt.pix.height;
1041         dev->format = fmt;
1042
1043         v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
1044         call_all(dev, pad, set_fmt, NULL, &format);
1045         v4l2_fill_pix_format(&f->fmt.pix, &format.format);
1046
1047         return rc;
1048 }
1049
1050 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
1051 {
1052         struct cx231xx_fh *fh = priv;
1053         struct cx231xx *dev = fh->dev;
1054
1055         *id = dev->norm;
1056         return 0;
1057 }
1058
1059 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1060 {
1061         struct cx231xx_fh *fh = priv;
1062         struct cx231xx *dev = fh->dev;
1063         struct v4l2_subdev_format format = {
1064                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1065         };
1066         int rc;
1067
1068         rc = check_dev(dev);
1069         if (rc < 0)
1070                 return rc;
1071
1072         if (dev->norm == norm)
1073                 return 0;
1074
1075         if (videobuf_queue_is_busy(&fh->vb_vidq))
1076                 return -EBUSY;
1077
1078         dev->norm = norm;
1079
1080         /* Adjusts width/height, if needed */
1081         dev->width = 720;
1082         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1083
1084         call_all(dev, video, s_std, dev->norm);
1085
1086         /* We need to reset basic properties in the decoder related to
1087            resolution (since a standard change effects things like the number
1088            of lines in VACT, etc) */
1089         format.format.code = MEDIA_BUS_FMT_FIXED;
1090         format.format.width = dev->width;
1091         format.format.height = dev->height;
1092         call_all(dev, pad, set_fmt, NULL, &format);
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 n;
1116         int ret;
1117
1118         n = i->index;
1119         if (n >= MAX_CX231XX_INPUT)
1120                 return -EINVAL;
1121         if (0 == INPUT(n)->type)
1122                 return -EINVAL;
1123
1124         i->index = n;
1125         i->type = V4L2_INPUT_TYPE_CAMERA;
1126
1127         strcpy(i->name, iname[INPUT(n)->type]);
1128
1129         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1130             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1131                 i->type = V4L2_INPUT_TYPE_TUNER;
1132
1133         i->std = dev->vdev.tvnorms;
1134
1135         /* If they are asking about the active input, read signal status */
1136         if (n == dev->video_input) {
1137                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1138                                             GEN_STAT, 2, &gen_stat, 4);
1139                 if (ret > 0) {
1140                         if ((gen_stat & FLD_VPRES) == 0x00)
1141                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1142                         if ((gen_stat & FLD_HLOCK) == 0x00)
1143                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1144                 }
1145         }
1146
1147         return 0;
1148 }
1149
1150 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1151 {
1152         struct cx231xx_fh *fh = priv;
1153         struct cx231xx *dev = fh->dev;
1154
1155         *i = dev->video_input;
1156
1157         return 0;
1158 }
1159
1160 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1161 {
1162         struct cx231xx_fh *fh = priv;
1163         struct cx231xx *dev = fh->dev;
1164         int rc;
1165
1166         dev->mode_tv = 0;
1167         rc = check_dev(dev);
1168         if (rc < 0)
1169                 return rc;
1170
1171         if (i >= MAX_CX231XX_INPUT)
1172                 return -EINVAL;
1173         if (0 == INPUT(i)->type)
1174                 return -EINVAL;
1175
1176         video_mux(dev, i);
1177
1178         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1179             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1180                 /* There's a tuner, so reset the standard and put it on the
1181                    last known frequency (since it was probably powered down
1182                    until now */
1183                 call_all(dev, video, s_std, dev->norm);
1184         }
1185
1186         return 0;
1187 }
1188
1189 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1190 {
1191         struct cx231xx_fh *fh = priv;
1192         struct cx231xx *dev = fh->dev;
1193         int rc;
1194
1195         rc = check_dev(dev);
1196         if (rc < 0)
1197                 return rc;
1198
1199         if (0 != t->index)
1200                 return -EINVAL;
1201
1202         strcpy(t->name, "Tuner");
1203
1204         t->type = V4L2_TUNER_ANALOG_TV;
1205         t->capability = V4L2_TUNER_CAP_NORM;
1206         t->rangehigh = 0xffffffffUL;
1207         t->signal = 0xffff;     /* LOCKED */
1208         call_all(dev, tuner, g_tuner, t);
1209
1210         return 0;
1211 }
1212
1213 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1214 {
1215         struct cx231xx_fh *fh = priv;
1216         struct cx231xx *dev = fh->dev;
1217         int rc;
1218
1219         rc = check_dev(dev);
1220         if (rc < 0)
1221                 return rc;
1222
1223         if (0 != t->index)
1224                 return -EINVAL;
1225 #if 0
1226         call_all(dev, tuner, s_tuner, t);
1227 #endif
1228         return 0;
1229 }
1230
1231 int cx231xx_g_frequency(struct file *file, void *priv,
1232                               struct v4l2_frequency *f)
1233 {
1234         struct cx231xx_fh *fh = priv;
1235         struct cx231xx *dev = fh->dev;
1236
1237         if (f->tuner)
1238                 return -EINVAL;
1239
1240         f->frequency = dev->ctl_freq;
1241
1242         return 0;
1243 }
1244
1245 int cx231xx_s_frequency(struct file *file, void *priv,
1246                               const struct v4l2_frequency *f)
1247 {
1248         struct cx231xx_fh *fh = priv;
1249         struct cx231xx *dev = fh->dev;
1250         struct v4l2_frequency new_freq = *f;
1251         int rc;
1252         u32 if_frequency = 5400000;
1253
1254         dev_dbg(dev->dev,
1255                 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1256                 f->frequency, f->type);
1257
1258         rc = check_dev(dev);
1259         if (rc < 0)
1260                 return rc;
1261
1262         if (0 != f->tuner)
1263                 return -EINVAL;
1264
1265         /* set pre channel change settings in DIF first */
1266         rc = cx231xx_tuner_pre_channel_change(dev);
1267
1268         call_all(dev, tuner, s_frequency, f);
1269         call_all(dev, tuner, g_frequency, &new_freq);
1270         dev->ctl_freq = new_freq.frequency;
1271
1272         /* set post channel change settings in DIF first */
1273         rc = cx231xx_tuner_post_channel_change(dev);
1274
1275         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1276                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1277                         if_frequency = 5400000;  /*5.4MHz       */
1278                 else if (dev->norm & V4L2_STD_B)
1279                         if_frequency = 6000000;  /*6.0MHz       */
1280                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1281                         if_frequency = 6900000;  /*6.9MHz       */
1282                 else if (dev->norm & V4L2_STD_GH)
1283                         if_frequency = 7100000;  /*7.1MHz       */
1284                 else if (dev->norm & V4L2_STD_PAL_I)
1285                         if_frequency = 7250000;  /*7.25MHz      */
1286                 else if (dev->norm & V4L2_STD_SECAM_L)
1287                         if_frequency = 6900000;  /*6.9MHz       */
1288                 else if (dev->norm & V4L2_STD_SECAM_LC)
1289                         if_frequency = 1250000;  /*1.25MHz      */
1290
1291                 dev_dbg(dev->dev,
1292                         "if_frequency is set to %d\n", if_frequency);
1293                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1294
1295                 update_HH_register_after_set_DIF(dev);
1296         }
1297
1298         dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1299
1300         return rc;
1301 }
1302
1303 #ifdef CONFIG_VIDEO_ADV_DEBUG
1304
1305 int cx231xx_g_chip_info(struct file *file, void *fh,
1306                         struct v4l2_dbg_chip_info *chip)
1307 {
1308         switch (chip->match.addr) {
1309         case 0: /* Cx231xx - internal registers */
1310                 return 0;
1311         case 1: /* AFE - read byte */
1312                 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1313                 return 0;
1314         case 2: /* Video Block - read byte */
1315                 strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1316                 return 0;
1317         case 3: /* I2S block - read byte */
1318                 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1319                 return 0;
1320         case 4: /* AFE - read dword */
1321                 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1322                 return 0;
1323         case 5: /* Video Block - read dword */
1324                 strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1325                 return 0;
1326         case 6: /* I2S Block - read dword */
1327                 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1328                 return 0;
1329         }
1330         return -EINVAL;
1331 }
1332
1333 int cx231xx_g_register(struct file *file, void *priv,
1334                              struct v4l2_dbg_register *reg)
1335 {
1336         struct cx231xx_fh *fh = priv;
1337         struct cx231xx *dev = fh->dev;
1338         int ret;
1339         u8 value[4] = { 0, 0, 0, 0 };
1340         u32 data = 0;
1341
1342         switch (reg->match.addr) {
1343         case 0: /* Cx231xx - internal registers */
1344                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1345                                 (u16)reg->reg, value, 4);
1346                 reg->val = value[0] | value[1] << 8 |
1347                         value[2] << 16 | value[3] << 24;
1348                 reg->size = 4;
1349                 break;
1350         case 1: /* AFE - read byte */
1351                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1352                                 (u16)reg->reg, 2, &data, 1);
1353                 reg->val = data;
1354                 reg->size = 1;
1355                 break;
1356         case 2: /* Video Block - read byte */
1357                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1358                                 (u16)reg->reg, 2, &data, 1);
1359                 reg->val = data;
1360                 reg->size = 1;
1361                 break;
1362         case 3: /* I2S block - read byte */
1363                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1364                                 (u16)reg->reg, 1, &data, 1);
1365                 reg->val = data;
1366                 reg->size = 1;
1367                 break;
1368         case 4: /* AFE - read dword */
1369                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1370                                 (u16)reg->reg, 2, &data, 4);
1371                 reg->val = data;
1372                 reg->size = 4;
1373                 break;
1374         case 5: /* Video Block - read dword */
1375                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1376                                 (u16)reg->reg, 2, &data, 4);
1377                 reg->val = data;
1378                 reg->size = 4;
1379                 break;
1380         case 6: /* I2S Block - read dword */
1381                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1382                                 (u16)reg->reg, 1, &data, 4);
1383                 reg->val = data;
1384                 reg->size = 4;
1385                 break;
1386         default:
1387                 return -EINVAL;
1388         }
1389         return ret < 0 ? ret : 0;
1390 }
1391
1392 int cx231xx_s_register(struct file *file, void *priv,
1393                              const struct v4l2_dbg_register *reg)
1394 {
1395         struct cx231xx_fh *fh = priv;
1396         struct cx231xx *dev = fh->dev;
1397         int ret;
1398         u8 data[4] = { 0, 0, 0, 0 };
1399
1400         switch (reg->match.addr) {
1401         case 0: /* cx231xx internal registers */
1402                 data[0] = (u8) reg->val;
1403                 data[1] = (u8) (reg->val >> 8);
1404                 data[2] = (u8) (reg->val >> 16);
1405                 data[3] = (u8) (reg->val >> 24);
1406                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1407                                 (u16)reg->reg, data, 4);
1408                 break;
1409         case 1: /* AFE - write byte */
1410                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1411                                 (u16)reg->reg, 2, reg->val, 1);
1412                 break;
1413         case 2: /* Video Block - write byte */
1414                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1415                                 (u16)reg->reg, 2, reg->val, 1);
1416                 break;
1417         case 3: /* I2S block - write byte */
1418                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1419                                 (u16)reg->reg, 1, reg->val, 1);
1420                 break;
1421         case 4: /* AFE - write dword */
1422                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1423                                 (u16)reg->reg, 2, reg->val, 4);
1424                 break;
1425         case 5: /* Video Block - write dword */
1426                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1427                                 (u16)reg->reg, 2, reg->val, 4);
1428                 break;
1429         case 6: /* I2S block - write dword */
1430                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1431                                 (u16)reg->reg, 1, reg->val, 4);
1432                 break;
1433         default:
1434                 return -EINVAL;
1435         }
1436         return ret < 0 ? ret : 0;
1437 }
1438 #endif
1439
1440 static int vidioc_cropcap(struct file *file, void *priv,
1441                           struct v4l2_cropcap *cc)
1442 {
1443         struct cx231xx_fh *fh = priv;
1444         struct cx231xx *dev = fh->dev;
1445         bool is_50hz = dev->norm & V4L2_STD_625_50;
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 = is_50hz ? 54 : 11;
1456         cc->pixelaspect.denominator = is_50hz ? 59 : 10;
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(&dev->open);
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(&dev->open);
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_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
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_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
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 }