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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3    cx231xx-video.c - driver for Conexant Cx23100/101/102
   4                      USB video capture devices
   5
   6    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   7         Based on em28xx driver
   8         Based on cx23885 driver
   9         Based on cx88 driver
  10
  11  */
  12
  13 #include "cx231xx.h"
  14 #include <linux/init.h>
  15 #include <linux/list.h>
  16 #include <linux/module.h>
  17 #include <linux/kernel.h>
  18 #include <linux/bitmap.h>
  19 #include <linux/i2c.h>
  20 #include <linux/mm.h>
  21 #include <linux/mutex.h>
  22 #include <linux/slab.h>
  23
  24 #include <media/v4l2-common.h>
  25 #include <media/v4l2-ioctl.h>
  26 #include <media/v4l2-event.h>
  27 #include <media/drv-intf/msp3400.h>
  28 #include <media/tuner.h>
  29
  30 #include <media/dvb_frontend.h>
  31
  32 #include "cx231xx-vbi.h"
  33
  34 #define CX231XX_VERSION "0.0.3"
  35
  36 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  37 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  38
  39 #define cx231xx_videodbg(fmt, arg...) do {\
  40         if (video_debug) \
  41                 printk(KERN_INFO "%s %s :"fmt, \
  42                          dev->name, __func__ , ##arg); } while (0)
  43
  44 static unsigned int isoc_debug;
  45 module_param(isoc_debug, int, 0644);
  46 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  47
  48 #define cx231xx_isocdbg(fmt, arg...) \
  49 do {\
  50         if (isoc_debug) { \
  51                 printk(KERN_INFO "%s %s :"fmt, \
  52                          dev->name, __func__ , ##arg); \
  53         } \
  54   } while (0)
  55
  56 MODULE_AUTHOR(DRIVER_AUTHOR);
  57 MODULE_DESCRIPTION(DRIVER_DESC);
  58 MODULE_LICENSE("GPL");
  59 MODULE_VERSION(CX231XX_VERSION);
  60
  61 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  62 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  63 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  64 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  65
  66 module_param_array(card, int, NULL, 0444);
  67 module_param_array(video_nr, int, NULL, 0444);
  68 module_param_array(vbi_nr, int, NULL, 0444);
  69 module_param_array(radio_nr, int, NULL, 0444);
  70
  71 MODULE_PARM_DESC(card, "card type");
  72 MODULE_PARM_DESC(video_nr, "video device numbers");
  73 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  74 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  75
  76 static unsigned int video_debug;
  77 module_param(video_debug, int, 0644);
  78 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  79
  80 /* supported video standards */
  81 static struct cx231xx_fmt format[] = {
  82         {
  83          .fourcc = V4L2_PIX_FMT_YUYV,
  84          .depth = 16,
  85          .reg = 0,
  86          },
  87 };
  88
  89
  90 static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
  91 {
  92 #ifdef CONFIG_MEDIA_CONTROLLER
  93         struct media_device *mdev = dev->media_dev;
  94         struct media_entity  *entity, *decoder = NULL, *source;
  95         struct media_link *link, *found_link = NULL;
  96         int ret, active_links = 0;
  97
  98         if (!mdev)
  99                 return 0;
 100
 101         /*
 102          * This will find the tuner that is connected into the decoder.
 103          * Technically, this is not 100% correct, as the device may be
 104          * using an analog input instead of the tuner. However, as we can't
 105          * do DVB streaming while the DMA engine is being used for V4L2,
 106          * this should be enough for the actual needs.
 107          */
 108         media_device_for_each_entity(entity, mdev) {
 109                 if (entity->function == MEDIA_ENT_F_ATV_DECODER) {
 110                         decoder = entity;
 111                         break;
 112                 }
 113         }
 114         if (!decoder)
 115                 return 0;
 116
 117         list_for_each_entry(link, &decoder->links, list) {
 118                 if (link->sink->entity == decoder) {
 119                         found_link = link;
 120                         if (link->flags & MEDIA_LNK_FL_ENABLED)
 121                                 active_links++;
 122                         break;
 123                 }
 124         }
 125
 126         if (active_links == 1 || !found_link)
 127                 return 0;
 128
 129         source = found_link->source->entity;
 130         list_for_each_entry(link, &source->links, list) {
 131                 struct media_entity *sink;
 132                 int flags = 0;
 133
 134                 sink = link->sink->entity;
 135
 136                 if (sink == entity)
 137                         flags = MEDIA_LNK_FL_ENABLED;
 138
 139                 ret = media_entity_setup_link(link, flags);
 140                 if (ret) {
 141                         dev_err(dev->dev,
 142                                 "Couldn't change link %s->%s to %s. Error %d\n",
 143                                 source->name, sink->name,
 144                                 flags ? "enabled" : "disabled",
 145                                 ret);
 146                         return ret;
 147                 } else
 148                         dev_dbg(dev->dev,
 149                                 "link %s->%s was %s\n",
 150                                 source->name, sink->name,
 151                                 flags ? "ENABLED" : "disabled");
 152         }
 153 #endif
 154         return 0;
 155 }
 156
 157 /* ------------------------------------------------------------------
 158         Video buffer and parser functions
 159    ------------------------------------------------------------------*/
 160
 161 /*
 162  * Announces that a buffer were filled and request the next
 163  */
 164 static inline void buffer_filled(struct cx231xx *dev,
 165                                  struct cx231xx_dmaqueue *dma_q,
 166                                  struct cx231xx_buffer *buf)
 167 {
 168         /* Advice that buffer was filled */
 169         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 170         buf->vb.state = VIDEOBUF_DONE;
 171         buf->vb.field_count++;
 172         buf->vb.ts = ktime_get_ns();
 173
 174         if (dev->USE_ISO)
 175                 dev->video_mode.isoc_ctl.buf = NULL;
 176         else
 177                 dev->video_mode.bulk_ctl.buf = NULL;
 178
 179         list_del(&buf->vb.queue);
 180         wake_up(&buf->vb.done);
 181 }
 182
 183 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 184 {
 185         char *errmsg = "Unknown";
 186
 187         switch (status) {
 188         case -ENOENT:
 189                 errmsg = "unlinked synchronously";
 190                 break;
 191         case -ECONNRESET:
 192                 errmsg = "unlinked asynchronously";
 193                 break;
 194         case -ENOSR:
 195                 errmsg = "Buffer error (overrun)";
 196                 break;
 197         case -EPIPE:
 198                 errmsg = "Stalled (device not responding)";
 199                 break;
 200         case -EOVERFLOW:
 201                 errmsg = "Babble (bad cable?)";
 202                 break;
 203         case -EPROTO:
 204                 errmsg = "Bit-stuff error (bad cable?)";
 205                 break;
 206         case -EILSEQ:
 207                 errmsg = "CRC/Timeout (could be anything)";
 208                 break;
 209         case -ETIME:
 210                 errmsg = "Device does not respond";
 211                 break;
 212         }
 213         if (packet < 0) {
 214                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 215         } else {
 216                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 217                                 packet, status, errmsg);
 218         }
 219 }
 220
 221 /*
 222  * video-buf generic routine to get the next available buffer
 223  */
 224 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 225                                 struct cx231xx_buffer **buf)
 226 {
 227         struct cx231xx_video_mode *vmode =
 228             container_of(dma_q, struct cx231xx_video_mode, vidq);
 229         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 230
 231         char *outp;
 232
 233         if (list_empty(&dma_q->active)) {
 234                 cx231xx_isocdbg("No active queue to serve\n");
 235                 if (dev->USE_ISO)
 236                         dev->video_mode.isoc_ctl.buf = NULL;
 237                 else
 238                         dev->video_mode.bulk_ctl.buf = NULL;
 239                 *buf = NULL;
 240                 return;
 241         }
 242
 243         /* Get the next buffer */
 244         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 245
 246         /* Cleans up buffer - Useful for testing for frame/URB loss */
 247         outp = videobuf_to_vmalloc(&(*buf)->vb);
 248         memset(outp, 0, (*buf)->vb.size);
 249
 250         if (dev->USE_ISO)
 251                 dev->video_mode.isoc_ctl.buf = *buf;
 252         else
 253                 dev->video_mode.bulk_ctl.buf = *buf;
 254
 255         return;
 256 }
 257
 258 /*
 259  * Controls the isoc copy of each urb packet
 260  */
 261 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 262 {
 263         struct cx231xx_dmaqueue *dma_q = urb->context;
 264         int i;
 265         unsigned char *p_buffer;
 266         u32 bytes_parsed = 0, buffer_size = 0;
 267         u8 sav_eav = 0;
 268
 269         if (!dev)
 270                 return 0;
 271
 272         if (dev->state & DEV_DISCONNECTED)
 273                 return 0;
 274
 275         if (urb->status < 0) {
 276                 print_err_status(dev, -1, urb->status);
 277                 if (urb->status == -ENOENT)
 278                         return 0;
 279         }
 280
 281         for (i = 0; i < urb->number_of_packets; i++) {
 282                 int status = urb->iso_frame_desc[i].status;
 283
 284                 if (status < 0) {
 285                         print_err_status(dev, i, status);
 286                         if (urb->iso_frame_desc[i].status != -EPROTO)
 287                                 continue;
 288                 }
 289
 290                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 291                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 292                         continue;
 293                 }
 294                 if (urb->iso_frame_desc[i].actual_length >
 295                     dev->video_mode.max_pkt_size) {
 296                         cx231xx_isocdbg("packet bigger than packet size");
 297                         continue;
 298                 }
 299
 300                 /*  get buffer pointer and length */
 301                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 302                 buffer_size = urb->iso_frame_desc[i].actual_length;
 303                 bytes_parsed = 0;
 304
 305                 if (dma_q->is_partial_line) {
 306                         /* Handle the case of a partial line */
 307                         sav_eav = dma_q->last_sav;
 308                 } else {
 309                         /* Check for a SAV/EAV overlapping
 310                                 the buffer boundary */
 311                         sav_eav =
 312                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 313                                                           dma_q->partial_buf,
 314                                                           &bytes_parsed);
 315                 }
 316
 317                 sav_eav &= 0xF0;
 318                 /* Get the first line if we have some portion of an SAV/EAV from
 319                    the last buffer or a partial line  */
 320                 if (sav_eav) {
 321                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 322                                 sav_eav,        /* SAV/EAV */
 323                                 p_buffer + bytes_parsed,        /* p_buffer */
 324                                 buffer_size - bytes_parsed);/* buf size */
 325                 }
 326
 327                 /* Now parse data that is completely in this buffer */
 328                 /* dma_q->is_partial_line = 0;  */
 329
 330                 while (bytes_parsed < buffer_size) {
 331                         u32 bytes_used = 0;
 332
 333                         sav_eav = cx231xx_find_next_SAV_EAV(
 334                                 p_buffer + bytes_parsed,        /* p_buffer */
 335                                 buffer_size - bytes_parsed,     /* buf size */
 336                                 &bytes_used);/* bytes used to get SAV/EAV */
 337
 338                         bytes_parsed += bytes_used;
 339
 340                         sav_eav &= 0xF0;
 341                         if (sav_eav && (bytes_parsed < buffer_size)) {
 342                                 bytes_parsed += cx231xx_get_video_line(dev,
 343                                         dma_q, sav_eav, /* SAV/EAV */
 344                                         p_buffer + bytes_parsed,/* p_buffer */
 345                                         buffer_size - bytes_parsed);/*buf size*/
 346                         }
 347                 }
 348
 349                 /* Save the last four bytes of the buffer so we can check the
 350                    buffer boundary condition next time */
 351                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 352                 bytes_parsed = 0;
 353
 354         }
 355         return 1;
 356 }
 357
 358 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 359 {
 360         struct cx231xx_dmaqueue *dma_q = urb->context;
 361         unsigned char *p_buffer;
 362         u32 bytes_parsed = 0, buffer_size = 0;
 363         u8 sav_eav = 0;
 364
 365         if (!dev)
 366                 return 0;
 367
 368         if (dev->state & DEV_DISCONNECTED)
 369                 return 0;
 370
 371         if (urb->status < 0) {
 372                 print_err_status(dev, -1, urb->status);
 373                 if (urb->status == -ENOENT)
 374                         return 0;
 375         }
 376
 377         if (1) {
 378
 379                 /*  get buffer pointer and length */
 380                 p_buffer = urb->transfer_buffer;
 381                 buffer_size = urb->actual_length;
 382                 bytes_parsed = 0;
 383
 384                 if (dma_q->is_partial_line) {
 385                         /* Handle the case of a partial line */
 386                         sav_eav = dma_q->last_sav;
 387                 } else {
 388                         /* Check for a SAV/EAV overlapping
 389                                 the buffer boundary */
 390                         sav_eav =
 391                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 392                                                           dma_q->partial_buf,
 393                                                           &bytes_parsed);
 394                 }
 395
 396                 sav_eav &= 0xF0;
 397                 /* Get the first line if we have some portion of an SAV/EAV from
 398                    the last buffer or a partial line  */
 399                 if (sav_eav) {
 400                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 401                                 sav_eav,        /* SAV/EAV */
 402                                 p_buffer + bytes_parsed,        /* p_buffer */
 403                                 buffer_size - bytes_parsed);/* buf size */
 404                 }
 405
 406                 /* Now parse data that is completely in this buffer */
 407                 /* dma_q->is_partial_line = 0;  */
 408
 409                 while (bytes_parsed < buffer_size) {
 410                         u32 bytes_used = 0;
 411
 412                         sav_eav = cx231xx_find_next_SAV_EAV(
 413                                 p_buffer + bytes_parsed,        /* p_buffer */
 414                                 buffer_size - bytes_parsed,     /* buf size */
 415                                 &bytes_used);/* bytes used to get SAV/EAV */
 416
 417                         bytes_parsed += bytes_used;
 418
 419                         sav_eav &= 0xF0;
 420                         if (sav_eav && (bytes_parsed < buffer_size)) {
 421                                 bytes_parsed += cx231xx_get_video_line(dev,
 422                                         dma_q, sav_eav, /* SAV/EAV */
 423                                         p_buffer + bytes_parsed,/* p_buffer */
 424                                         buffer_size - bytes_parsed);/*buf size*/
 425                         }
 426                 }
 427
 428                 /* Save the last four bytes of the buffer so we can check the
 429                    buffer boundary condition next time */
 430                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 431                 bytes_parsed = 0;
 432
 433         }
 434         return 1;
 435 }
 436
 437
 438 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 439                                  u32 *p_bytes_used)
 440 {
 441         u32 bytes_used;
 442         u8 boundary_bytes[8];
 443         u8 sav_eav = 0;
 444
 445         *p_bytes_used = 0;
 446
 447         /* Create an array of the last 4 bytes of the last buffer and the first
 448            4 bytes of the current buffer. */
 449
 450         memcpy(boundary_bytes, partial_buf, 4);
 451         memcpy(boundary_bytes + 4, p_buffer, 4);
 452
 453         /* Check for the SAV/EAV in the boundary buffer */
 454         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 455                                             &bytes_used);
 456
 457         if (sav_eav) {
 458                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 459                    only those used in the new buffer */
 460                 *p_bytes_used = bytes_used - 4;
 461         }
 462
 463         return sav_eav;
 464 }
 465
 466 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 467 {
 468         u32 i;
 469         u8 sav_eav = 0;
 470
 471         /*
 472          * Don't search if the buffer size is less than 4.  It causes a page
 473          * fault since buffer_size - 4 evaluates to a large number in that
 474          * case.
 475          */
 476         if (buffer_size < 4) {
 477                 *p_bytes_used = buffer_size;
 478                 return 0;
 479         }
 480
 481         for (i = 0; i < (buffer_size - 3); i++) {
 482
 483                 if ((p_buffer[i] == 0xFF) &&
 484                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 485
 486                         *p_bytes_used = i + 4;
 487                         sav_eav = p_buffer[i + 3];
 488                         return sav_eav;
 489                 }
 490         }
 491
 492         *p_bytes_used = buffer_size;
 493         return 0;
 494 }
 495
 496 u32 cx231xx_get_video_line(struct cx231xx *dev,
 497                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 498                            u8 *p_buffer, u32 buffer_size)
 499 {
 500         u32 bytes_copied = 0;
 501         int current_field = -1;
 502
 503         switch (sav_eav) {
 504         case SAV_ACTIVE_VIDEO_FIELD1:
 505                 /* looking for skipped line which occurred in PAL 720x480 mode.
 506                    In this case, there will be no active data contained
 507                    between the SAV and EAV */
 508                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 509                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 510                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 511                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 512                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 513                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 514                         return bytes_copied;
 515                 current_field = 1;
 516                 break;
 517
 518         case SAV_ACTIVE_VIDEO_FIELD2:
 519                 /* looking for skipped line which occurred in PAL 720x480 mode.
 520                    In this case, there will be no active data contained between
 521                    the SAV and EAV */
 522                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 523                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 524                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 525                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 526                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 527                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 528                         return bytes_copied;
 529                 current_field = 2;
 530                 break;
 531         }
 532
 533         dma_q->last_sav = sav_eav;
 534
 535         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 536                                                buffer_size, current_field);
 537
 538         return bytes_copied;
 539 }
 540
 541 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 542                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 543                             u32 length, int field_number)
 544 {
 545         u32 bytes_to_copy;
 546         struct cx231xx_buffer *buf;
 547         u32 _line_size = dev->width * 2;
 548
 549         if (dma_q->current_field != field_number)
 550                 cx231xx_reset_video_buffer(dev, dma_q);
 551
 552         /* get the buffer pointer */
 553         if (dev->USE_ISO)
 554                 buf = dev->video_mode.isoc_ctl.buf;
 555         else
 556                 buf = dev->video_mode.bulk_ctl.buf;
 557
 558         /* Remember the field number for next time */
 559         dma_q->current_field = field_number;
 560
 561         bytes_to_copy = dma_q->bytes_left_in_line;
 562         if (bytes_to_copy > length)
 563                 bytes_to_copy = length;
 564
 565         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 566                 dma_q->bytes_left_in_line -= bytes_to_copy;
 567                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 568                                           0 : 1;
 569                 return 0;
 570         }
 571
 572         dma_q->is_partial_line = 1;
 573
 574         /* If we don't have a buffer, just return the number of bytes we would
 575            have copied if we had a buffer. */
 576         if (!buf) {
 577                 dma_q->bytes_left_in_line -= bytes_to_copy;
 578                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 579                                          ? 0 : 1;
 580                 return bytes_to_copy;
 581         }
 582
 583         /* copy the data to video buffer */
 584         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 585
 586         dma_q->pos += bytes_to_copy;
 587         dma_q->bytes_left_in_line -= bytes_to_copy;
 588
 589         if (dma_q->bytes_left_in_line == 0) {
 590                 dma_q->bytes_left_in_line = _line_size;
 591                 dma_q->lines_completed++;
 592                 dma_q->is_partial_line = 0;
 593
 594                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 595                         buffer_filled(dev, dma_q, buf);
 596
 597                         dma_q->pos = 0;
 598                         buf = NULL;
 599                         dma_q->lines_completed = 0;
 600                 }
 601         }
 602
 603         return bytes_to_copy;
 604 }
 605
 606 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 607                                 struct cx231xx_dmaqueue *dma_q)
 608 {
 609         struct cx231xx_buffer *buf;
 610
 611         /* handle the switch from field 1 to field 2 */
 612         if (dma_q->current_field == 1) {
 613                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 614                         dma_q->field1_done = 1;
 615                 else
 616                         dma_q->field1_done = 0;
 617         }
 618
 619         if (dev->USE_ISO)
 620                 buf = dev->video_mode.isoc_ctl.buf;
 621         else
 622                 buf = dev->video_mode.bulk_ctl.buf;
 623
 624         if (buf == NULL) {
 625                 /* first try to get the buffer */
 626                 get_next_buf(dma_q, &buf);
 627
 628                 dma_q->pos = 0;
 629                 dma_q->field1_done = 0;
 630                 dma_q->current_field = -1;
 631         }
 632
 633         /* reset the counters */
 634         dma_q->bytes_left_in_line = dev->width << 1;
 635         dma_q->lines_completed = 0;
 636 }
 637
 638 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 639                     u8 *p_buffer, u32 bytes_to_copy)
 640 {
 641         u8 *p_out_buffer = NULL;
 642         u32 current_line_bytes_copied = 0;
 643         struct cx231xx_buffer *buf;
 644         u32 _line_size = dev->width << 1;
 645         void *startwrite;
 646         int offset, lencopy;
 647
 648         if (dev->USE_ISO)
 649                 buf = dev->video_mode.isoc_ctl.buf;
 650         else
 651                 buf = dev->video_mode.bulk_ctl.buf;
 652
 653         if (buf == NULL)
 654                 return -1;
 655
 656         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 657
 658         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 659
 660         /* Offset field 2 one line from the top of the buffer */
 661         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 662
 663         /* Offset for field 2 */
 664         startwrite = p_out_buffer + offset;
 665
 666         /* lines already completed in the current field */
 667         startwrite += (dma_q->lines_completed * _line_size * 2);
 668
 669         /* bytes already completed in the current line */
 670         startwrite += current_line_bytes_copied;
 671
 672         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 673                   bytes_to_copy : dma_q->bytes_left_in_line;
 674
 675         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 676                 return 0;
 677
 678         /* The below copies the UYVY data straight into video buffer */
 679         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 680
 681         return 0;
 682 }
 683
 684 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 685 {
 686         u16 i;
 687
 688         if (len <= 0)
 689                 return;
 690
 691         for (i = 0; i < len / 2; i++)
 692                 to[i] = (from[i] << 8) | (from[i] >> 8);
 693 }
 694
 695 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 696 {
 697         u8 buffer_complete = 0;
 698
 699         /* Dual field stream */
 700         buffer_complete = ((dma_q->current_field == 2) &&
 701                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 702                             dma_q->field1_done);
 703
 704         return buffer_complete;
 705 }
 706
 707 /* ------------------------------------------------------------------
 708         Videobuf operations
 709    ------------------------------------------------------------------*/
 710
 711 static int
 712 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 713 {
 714         struct cx231xx_fh *fh = vq->priv_data;
 715         struct cx231xx *dev = fh->dev;
 716
 717         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 718         if (0 == *count)
 719                 *count = CX231XX_DEF_BUF;
 720
 721         if (*count < CX231XX_MIN_BUF)
 722                 *count = CX231XX_MIN_BUF;
 723
 724
 725         cx231xx_enable_analog_tuner(dev);
 726
 727         return 0;
 728 }
 729
 730 /* This is called *without* dev->slock held; please keep it that way */
 731 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 732 {
 733         struct cx231xx_fh *fh = vq->priv_data;
 734         struct cx231xx *dev = fh->dev;
 735         unsigned long flags = 0;
 736
 737         BUG_ON(in_interrupt());
 738
 739         /* We used to wait for the buffer to finish here, but this didn't work
 740            because, as we were keeping the state as VIDEOBUF_QUEUED,
 741            videobuf_queue_cancel marked it as finished for us.
 742            (Also, it could wedge forever if the hardware was misconfigured.)
 743
 744            This should be safe; by the time we get here, the buffer isn't
 745            queued anymore. If we ever start marking the buffers as
 746            VIDEOBUF_ACTIVE, it won't be, though.
 747          */
 748         spin_lock_irqsave(&dev->video_mode.slock, flags);
 749         if (dev->USE_ISO) {
 750                 if (dev->video_mode.isoc_ctl.buf == buf)
 751                         dev->video_mode.isoc_ctl.buf = NULL;
 752         } else {
 753                 if (dev->video_mode.bulk_ctl.buf == buf)
 754                         dev->video_mode.bulk_ctl.buf = NULL;
 755         }
 756         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 757
 758         videobuf_vmalloc_free(&buf->vb);
 759         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 760 }
 761
 762 static int
 763 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 764                enum v4l2_field field)
 765 {
 766         struct cx231xx_fh *fh = vq->priv_data;
 767         struct cx231xx_buffer *buf =
 768             container_of(vb, struct cx231xx_buffer, vb);
 769         struct cx231xx *dev = fh->dev;
 770         int rc = 0, urb_init = 0;
 771
 772         /* The only currently supported format is 16 bits/pixel */
 773         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 774                         + 7) >> 3;
 775         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 776                 return -EINVAL;
 777
 778         buf->vb.width = dev->width;
 779         buf->vb.height = dev->height;
 780         buf->vb.field = field;
 781
 782         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 783                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 784                 if (rc < 0)
 785                         goto fail;
 786         }
 787
 788         if (dev->USE_ISO) {
 789                 if (!dev->video_mode.isoc_ctl.num_bufs)
 790                         urb_init = 1;
 791         } else {
 792                 if (!dev->video_mode.bulk_ctl.num_bufs)
 793                         urb_init = 1;
 794         }
 795         dev_dbg(dev->dev,
 796                 "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 797                 urb_init, dev->video_mode.max_pkt_size);
 798         if (urb_init) {
 799                 dev->mode_tv = 0;
 800                 if (dev->USE_ISO)
 801                         rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 802                                        CX231XX_NUM_BUFS,
 803                                        dev->video_mode.max_pkt_size,
 804                                        cx231xx_isoc_copy);
 805                 else
 806                         rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 807                                        CX231XX_NUM_BUFS,
 808                                        dev->video_mode.max_pkt_size,
 809                                        cx231xx_bulk_copy);
 810                 if (rc < 0)
 811                         goto fail;
 812         }
 813
 814         buf->vb.state = VIDEOBUF_PREPARED;
 815
 816         return 0;
 817
 818 fail:
 819         free_buffer(vq, buf);
 820         return rc;
 821 }
 822
 823 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 824 {
 825         struct cx231xx_buffer *buf =
 826             container_of(vb, struct cx231xx_buffer, vb);
 827         struct cx231xx_fh *fh = vq->priv_data;
 828         struct cx231xx *dev = fh->dev;
 829         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 830
 831         buf->vb.state = VIDEOBUF_QUEUED;
 832         list_add_tail(&buf->vb.queue, &vidq->active);
 833
 834 }
 835
 836 static void buffer_release(struct videobuf_queue *vq,
 837                            struct videobuf_buffer *vb)
 838 {
 839         struct cx231xx_buffer *buf =
 840             container_of(vb, struct cx231xx_buffer, vb);
 841         struct cx231xx_fh *fh = vq->priv_data;
 842         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 843
 844         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 845
 846         free_buffer(vq, buf);
 847 }
 848
 849 static const struct videobuf_queue_ops cx231xx_video_qops = {
 850         .buf_setup = buffer_setup,
 851         .buf_prepare = buffer_prepare,
 852         .buf_queue = buffer_queue,
 853         .buf_release = buffer_release,
 854 };
 855
 856 /*********************  v4l2 interface  **************************************/
 857
 858 void video_mux(struct cx231xx *dev, int index)
 859 {
 860         dev->video_input = index;
 861         dev->ctl_ainput = INPUT(index)->amux;
 862
 863         cx231xx_set_video_input_mux(dev, index);
 864
 865         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 866
 867         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 868
 869         dev_dbg(dev->dev, "video_mux : %d\n", index);
 870
 871         /* do mode control overrides if required */
 872         cx231xx_do_mode_ctrl_overrides(dev);
 873 }
 874
 875 /* Usage lock check functions */
 876 static int res_get(struct cx231xx_fh *fh)
 877 {
 878         struct cx231xx *dev = fh->dev;
 879         int rc = 0;
 880
 881         /* This instance already has stream_on */
 882         if (fh->stream_on)
 883                 return rc;
 884
 885         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 886                 if (dev->stream_on)
 887                         return -EBUSY;
 888                 dev->stream_on = 1;
 889         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 890                 if (dev->vbi_stream_on)
 891                         return -EBUSY;
 892                 dev->vbi_stream_on = 1;
 893         } else
 894                 return -EINVAL;
 895
 896         fh->stream_on = 1;
 897
 898         return rc;
 899 }
 900
 901 static int res_check(struct cx231xx_fh *fh)
 902 {
 903         return fh->stream_on;
 904 }
 905
 906 static void res_free(struct cx231xx_fh *fh)
 907 {
 908         struct cx231xx *dev = fh->dev;
 909
 910         fh->stream_on = 0;
 911
 912         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 913                 dev->stream_on = 0;
 914         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 915                 dev->vbi_stream_on = 0;
 916 }
 917
 918 static int check_dev(struct cx231xx *dev)
 919 {
 920         if (dev->state & DEV_DISCONNECTED) {
 921                 dev_err(dev->dev, "v4l2 ioctl: device not present\n");
 922                 return -ENODEV;
 923         }
 924         return 0;
 925 }
 926
 927 /* ------------------------------------------------------------------
 928         IOCTL vidioc handling
 929    ------------------------------------------------------------------*/
 930
 931 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 932                                 struct v4l2_format *f)
 933 {
 934         struct cx231xx_fh *fh = priv;
 935         struct cx231xx *dev = fh->dev;
 936
 937         f->fmt.pix.width = dev->width;
 938         f->fmt.pix.height = dev->height;
 939         f->fmt.pix.pixelformat = dev->format->fourcc;
 940         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 941         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 942         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 943
 944         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 945
 946         return 0;
 947 }
 948
 949 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 950 {
 951         unsigned int i;
 952
 953         for (i = 0; i < ARRAY_SIZE(format); i++)
 954                 if (format[i].fourcc == fourcc)
 955                         return &format[i];
 956
 957         return NULL;
 958 }
 959
 960 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 961                                   struct v4l2_format *f)
 962 {
 963         struct cx231xx_fh *fh = priv;
 964         struct cx231xx *dev = fh->dev;
 965         unsigned int width = f->fmt.pix.width;
 966         unsigned int height = f->fmt.pix.height;
 967         unsigned int maxw = norm_maxw(dev);
 968         unsigned int maxh = norm_maxh(dev);
 969         struct cx231xx_fmt *fmt;
 970
 971         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 972         if (!fmt) {
 973                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 974                                  f->fmt.pix.pixelformat);
 975                 return -EINVAL;
 976         }
 977
 978         /* width must even because of the YUYV format
 979            height must be even because of interlacing */
 980         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 981
 982         f->fmt.pix.width = width;
 983         f->fmt.pix.height = height;
 984         f->fmt.pix.pixelformat = fmt->fourcc;
 985         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
 986         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 987         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 988         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 989
 990         return 0;
 991 }
 992
 993 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 994                                 struct v4l2_format *f)
 995 {
 996         struct cx231xx_fh *fh = priv;
 997         struct cx231xx *dev = fh->dev;
 998         int rc;
 999         struct cx231xx_fmt *fmt;
1000         struct v4l2_subdev_format format = {
1001                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1002         };
1003
1004         rc = check_dev(dev);
1005         if (rc < 0)
1006                 return rc;
1007
1008         vidioc_try_fmt_vid_cap(file, priv, f);
1009
1010         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1011         if (!fmt)
1012                 return -EINVAL;
1013
1014         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1015                 dev_err(dev->dev, "%s: queue busy\n", __func__);
1016                 return -EBUSY;
1017         }
1018
1019         if (dev->stream_on && !fh->stream_on) {
1020                 dev_err(dev->dev,
1021                         "%s: device in use by another fh\n", __func__);
1022                 return -EBUSY;
1023         }
1024
1025         /* set new image size */
1026         dev->width = f->fmt.pix.width;
1027         dev->height = f->fmt.pix.height;
1028         dev->format = fmt;
1029
1030         v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
1031         call_all(dev, pad, set_fmt, NULL, &format);
1032         v4l2_fill_pix_format(&f->fmt.pix, &format.format);
1033
1034         return rc;
1035 }
1036
1037 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
1038 {
1039         struct cx231xx_fh *fh = priv;
1040         struct cx231xx *dev = fh->dev;
1041
1042         *id = dev->norm;
1043         return 0;
1044 }
1045
1046 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1047 {
1048         struct cx231xx_fh *fh = priv;
1049         struct cx231xx *dev = fh->dev;
1050         struct v4l2_subdev_format format = {
1051                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1052         };
1053         int rc;
1054
1055         rc = check_dev(dev);
1056         if (rc < 0)
1057                 return rc;
1058
1059         if (dev->norm == norm)
1060                 return 0;
1061
1062         if (videobuf_queue_is_busy(&fh->vb_vidq))
1063                 return -EBUSY;
1064
1065         dev->norm = norm;
1066
1067         /* Adjusts width/height, if needed */
1068         dev->width = 720;
1069         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1070
1071         call_all(dev, video, s_std, dev->norm);
1072
1073         /* We need to reset basic properties in the decoder related to
1074            resolution (since a standard change effects things like the number
1075            of lines in VACT, etc) */
1076         format.format.code = MEDIA_BUS_FMT_FIXED;
1077         format.format.width = dev->width;
1078         format.format.height = dev->height;
1079         call_all(dev, pad, set_fmt, NULL, &format);
1080
1081         /* do mode control overrides */
1082         cx231xx_do_mode_ctrl_overrides(dev);
1083
1084         return 0;
1085 }
1086
1087 static const char *iname[] = {
1088         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1089         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1090         [CX231XX_VMUX_TELEVISION] = "Television",
1091         [CX231XX_VMUX_CABLE]      = "Cable TV",
1092         [CX231XX_VMUX_DVB]        = "DVB",
1093 };
1094
1095 void cx231xx_v4l2_create_entities(struct cx231xx *dev)
1096 {
1097 #if defined(CONFIG_MEDIA_CONTROLLER)
1098         int ret, i;
1099
1100         /* Create entities for each input connector */
1101         for (i = 0; i < MAX_CX231XX_INPUT; i++) {
1102                 struct media_entity *ent = &dev->input_ent[i];
1103
1104                 if (!INPUT(i)->type)
1105                         break;
1106
1107                 ent->name = iname[INPUT(i)->type];
1108                 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1109                 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1110
1111                 switch (INPUT(i)->type) {
1112                 case CX231XX_VMUX_COMPOSITE1:
1113                         ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1114                         break;
1115                 case CX231XX_VMUX_SVIDEO:
1116                         ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1117                         break;
1118                 case CX231XX_VMUX_TELEVISION:
1119                 case CX231XX_VMUX_CABLE:
1120                 case CX231XX_VMUX_DVB:
1121                         /* The DVB core will handle it */
1122                         if (dev->tuner_type == TUNER_ABSENT)
1123                                 continue;
1124                         /* fall through */
1125                 default: /* just to shut up a gcc warning */
1126                         ent->function = MEDIA_ENT_F_CONN_RF;
1127                         break;
1128                 }
1129
1130                 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1131                 if (ret < 0)
1132                         pr_err("failed to initialize input pad[%d]!\n", i);
1133
1134                 ret = media_device_register_entity(dev->media_dev, ent);
1135                 if (ret < 0)
1136                         pr_err("failed to register input entity %d!\n", i);
1137         }
1138 #endif
1139 }
1140
1141 int cx231xx_enum_input(struct file *file, void *priv,
1142                              struct v4l2_input *i)
1143 {
1144         struct cx231xx_fh *fh = priv;
1145         struct cx231xx *dev = fh->dev;
1146         u32 gen_stat;
1147         unsigned int n;
1148         int ret;
1149
1150         n = i->index;
1151         if (n >= MAX_CX231XX_INPUT)
1152                 return -EINVAL;
1153         if (0 == INPUT(n)->type)
1154                 return -EINVAL;
1155
1156         i->index = n;
1157         i->type = V4L2_INPUT_TYPE_CAMERA;
1158
1159         strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name));
1160
1161         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1162             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1163                 i->type = V4L2_INPUT_TYPE_TUNER;
1164
1165         i->std = dev->vdev.tvnorms;
1166
1167         /* If they are asking about the active input, read signal status */
1168         if (n == dev->video_input) {
1169                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1170                                             GEN_STAT, 2, &gen_stat, 4);
1171                 if (ret > 0) {
1172                         if ((gen_stat & FLD_VPRES) == 0x00)
1173                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1174                         if ((gen_stat & FLD_HLOCK) == 0x00)
1175                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1176                 }
1177         }
1178
1179         return 0;
1180 }
1181
1182 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1183 {
1184         struct cx231xx_fh *fh = priv;
1185         struct cx231xx *dev = fh->dev;
1186
1187         *i = dev->video_input;
1188
1189         return 0;
1190 }
1191
1192 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1193 {
1194         struct cx231xx_fh *fh = priv;
1195         struct cx231xx *dev = fh->dev;
1196         int rc;
1197
1198         dev->mode_tv = 0;
1199         rc = check_dev(dev);
1200         if (rc < 0)
1201                 return rc;
1202
1203         if (i >= MAX_CX231XX_INPUT)
1204                 return -EINVAL;
1205         if (0 == INPUT(i)->type)
1206                 return -EINVAL;
1207
1208         video_mux(dev, i);
1209
1210         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1211             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1212                 /* There's a tuner, so reset the standard and put it on the
1213                    last known frequency (since it was probably powered down
1214                    until now */
1215                 call_all(dev, video, s_std, dev->norm);
1216         }
1217
1218         return 0;
1219 }
1220
1221 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1222 {
1223         struct cx231xx_fh *fh = priv;
1224         struct cx231xx *dev = fh->dev;
1225         int rc;
1226
1227         rc = check_dev(dev);
1228         if (rc < 0)
1229                 return rc;
1230
1231         if (0 != t->index)
1232                 return -EINVAL;
1233
1234         strscpy(t->name, "Tuner", sizeof(t->name));
1235
1236         t->type = V4L2_TUNER_ANALOG_TV;
1237         t->capability = V4L2_TUNER_CAP_NORM;
1238         t->rangehigh = 0xffffffffUL;
1239         t->signal = 0xffff;     /* LOCKED */
1240         call_all(dev, tuner, g_tuner, t);
1241
1242         return 0;
1243 }
1244
1245 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1246 {
1247         struct cx231xx_fh *fh = priv;
1248         struct cx231xx *dev = fh->dev;
1249         int rc;
1250
1251         rc = check_dev(dev);
1252         if (rc < 0)
1253                 return rc;
1254
1255         if (0 != t->index)
1256                 return -EINVAL;
1257 #if 0
1258         call_all(dev, tuner, s_tuner, t);
1259 #endif
1260         return 0;
1261 }
1262
1263 int cx231xx_g_frequency(struct file *file, void *priv,
1264                               struct v4l2_frequency *f)
1265 {
1266         struct cx231xx_fh *fh = priv;
1267         struct cx231xx *dev = fh->dev;
1268
1269         if (f->tuner)
1270                 return -EINVAL;
1271
1272         f->frequency = dev->ctl_freq;
1273
1274         return 0;
1275 }
1276
1277 int cx231xx_s_frequency(struct file *file, void *priv,
1278                               const struct v4l2_frequency *f)
1279 {
1280         struct cx231xx_fh *fh = priv;
1281         struct cx231xx *dev = fh->dev;
1282         struct v4l2_frequency new_freq = *f;
1283         int rc;
1284         u32 if_frequency = 5400000;
1285
1286         dev_dbg(dev->dev,
1287                 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1288                 f->frequency, f->type);
1289
1290         rc = check_dev(dev);
1291         if (rc < 0)
1292                 return rc;
1293
1294         if (0 != f->tuner)
1295                 return -EINVAL;
1296
1297         /* set pre channel change settings in DIF first */
1298         rc = cx231xx_tuner_pre_channel_change(dev);
1299
1300         call_all(dev, tuner, s_frequency, f);
1301         call_all(dev, tuner, g_frequency, &new_freq);
1302         dev->ctl_freq = new_freq.frequency;
1303
1304         /* set post channel change settings in DIF first */
1305         rc = cx231xx_tuner_post_channel_change(dev);
1306
1307         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1308                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1309                         if_frequency = 5400000;  /*5.4MHz       */
1310                 else if (dev->norm & V4L2_STD_B)
1311                         if_frequency = 6000000;  /*6.0MHz       */
1312                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1313                         if_frequency = 6900000;  /*6.9MHz       */
1314                 else if (dev->norm & V4L2_STD_GH)
1315                         if_frequency = 7100000;  /*7.1MHz       */
1316                 else if (dev->norm & V4L2_STD_PAL_I)
1317                         if_frequency = 7250000;  /*7.25MHz      */
1318                 else if (dev->norm & V4L2_STD_SECAM_L)
1319                         if_frequency = 6900000;  /*6.9MHz       */
1320                 else if (dev->norm & V4L2_STD_SECAM_LC)
1321                         if_frequency = 1250000;  /*1.25MHz      */
1322
1323                 dev_dbg(dev->dev,
1324                         "if_frequency is set to %d\n", if_frequency);
1325                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1326
1327                 update_HH_register_after_set_DIF(dev);
1328         }
1329
1330         dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1331
1332         return rc;
1333 }
1334
1335 #ifdef CONFIG_VIDEO_ADV_DEBUG
1336
1337 int cx231xx_g_chip_info(struct file *file, void *fh,
1338                         struct v4l2_dbg_chip_info *chip)
1339 {
1340         switch (chip->match.addr) {
1341         case 0: /* Cx231xx - internal registers */
1342                 return 0;
1343         case 1: /* AFE - read byte */
1344                 strscpy(chip->name, "AFE (byte)", sizeof(chip->name));
1345                 return 0;
1346         case 2: /* Video Block - read byte */
1347                 strscpy(chip->name, "Video (byte)", sizeof(chip->name));
1348                 return 0;
1349         case 3: /* I2S block - read byte */
1350                 strscpy(chip->name, "I2S (byte)", sizeof(chip->name));
1351                 return 0;
1352         case 4: /* AFE - read dword */
1353                 strscpy(chip->name, "AFE (dword)", sizeof(chip->name));
1354                 return 0;
1355         case 5: /* Video Block - read dword */
1356                 strscpy(chip->name, "Video (dword)", sizeof(chip->name));
1357                 return 0;
1358         case 6: /* I2S Block - read dword */
1359                 strscpy(chip->name, "I2S (dword)", sizeof(chip->name));
1360                 return 0;
1361         }
1362         return -EINVAL;
1363 }
1364
1365 int cx231xx_g_register(struct file *file, void *priv,
1366                              struct v4l2_dbg_register *reg)
1367 {
1368         struct cx231xx_fh *fh = priv;
1369         struct cx231xx *dev = fh->dev;
1370         int ret;
1371         u8 value[4] = { 0, 0, 0, 0 };
1372         u32 data = 0;
1373
1374         switch (reg->match.addr) {
1375         case 0: /* Cx231xx - internal registers */
1376                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1377                                 (u16)reg->reg, value, 4);
1378                 reg->val = value[0] | value[1] << 8 |
1379                         value[2] << 16 | (u32)value[3] << 24;
1380                 reg->size = 4;
1381                 break;
1382         case 1: /* AFE - read byte */
1383                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1384                                 (u16)reg->reg, 2, &data, 1);
1385                 reg->val = data;
1386                 reg->size = 1;
1387                 break;
1388         case 2: /* Video Block - read byte */
1389                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1390                                 (u16)reg->reg, 2, &data, 1);
1391                 reg->val = data;
1392                 reg->size = 1;
1393                 break;
1394         case 3: /* I2S block - read byte */
1395                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1396                                 (u16)reg->reg, 1, &data, 1);
1397                 reg->val = data;
1398                 reg->size = 1;
1399                 break;
1400         case 4: /* AFE - read dword */
1401                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1402                                 (u16)reg->reg, 2, &data, 4);
1403                 reg->val = data;
1404                 reg->size = 4;
1405                 break;
1406         case 5: /* Video Block - read dword */
1407                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1408                                 (u16)reg->reg, 2, &data, 4);
1409                 reg->val = data;
1410                 reg->size = 4;
1411                 break;
1412         case 6: /* I2S Block - read dword */
1413                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1414                                 (u16)reg->reg, 1, &data, 4);
1415                 reg->val = data;
1416                 reg->size = 4;
1417                 break;
1418         default:
1419                 return -EINVAL;
1420         }
1421         return ret < 0 ? ret : 0;
1422 }
1423
1424 int cx231xx_s_register(struct file *file, void *priv,
1425                              const struct v4l2_dbg_register *reg)
1426 {
1427         struct cx231xx_fh *fh = priv;
1428         struct cx231xx *dev = fh->dev;
1429         int ret;
1430         u8 data[4] = { 0, 0, 0, 0 };
1431
1432         switch (reg->match.addr) {
1433         case 0: /* cx231xx internal registers */
1434                 data[0] = (u8) reg->val;
1435                 data[1] = (u8) (reg->val >> 8);
1436                 data[2] = (u8) (reg->val >> 16);
1437                 data[3] = (u8) (reg->val >> 24);
1438                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1439                                 (u16)reg->reg, data, 4);
1440                 break;
1441         case 1: /* AFE - write byte */
1442                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1443                                 (u16)reg->reg, 2, reg->val, 1);
1444                 break;
1445         case 2: /* Video Block - write byte */
1446                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1447                                 (u16)reg->reg, 2, reg->val, 1);
1448                 break;
1449         case 3: /* I2S block - write byte */
1450                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1451                                 (u16)reg->reg, 1, reg->val, 1);
1452                 break;
1453         case 4: /* AFE - write dword */
1454                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1455                                 (u16)reg->reg, 2, reg->val, 4);
1456                 break;
1457         case 5: /* Video Block - write dword */
1458                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1459                                 (u16)reg->reg, 2, reg->val, 4);
1460                 break;
1461         case 6: /* I2S block - write dword */
1462                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1463                                 (u16)reg->reg, 1, reg->val, 4);
1464                 break;
1465         default:
1466                 return -EINVAL;
1467         }
1468         return ret < 0 ? ret : 0;
1469 }
1470 #endif
1471
1472 static int vidioc_g_pixelaspect(struct file *file, void *priv,
1473                                 int type, struct v4l2_fract *f)
1474 {
1475         struct cx231xx_fh *fh = priv;
1476         struct cx231xx *dev = fh->dev;
1477         bool is_50hz = dev->norm & V4L2_STD_625_50;
1478
1479         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1480                 return -EINVAL;
1481
1482         f->numerator = is_50hz ? 54 : 11;
1483         f->denominator = is_50hz ? 59 : 10;
1484
1485         return 0;
1486 }
1487
1488 static int vidioc_g_selection(struct file *file, void *priv,
1489                               struct v4l2_selection *s)
1490 {
1491         struct cx231xx_fh *fh = priv;
1492         struct cx231xx *dev = fh->dev;
1493
1494         if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1495                 return -EINVAL;
1496
1497         switch (s->target) {
1498         case V4L2_SEL_TGT_CROP_BOUNDS:
1499         case V4L2_SEL_TGT_CROP_DEFAULT:
1500                 s->r.left = 0;
1501                 s->r.top = 0;
1502                 s->r.width = dev->width;
1503                 s->r.height = dev->height;
1504                 break;
1505         default:
1506                 return -EINVAL;
1507         }
1508         return 0;
1509 }
1510
1511 static int vidioc_streamon(struct file *file, void *priv,
1512                            enum v4l2_buf_type type)
1513 {
1514         struct cx231xx_fh *fh = priv;
1515         struct cx231xx *dev = fh->dev;
1516         int rc;
1517
1518         rc = check_dev(dev);
1519         if (rc < 0)
1520                 return rc;
1521
1522         rc = res_get(fh);
1523
1524         if (likely(rc >= 0))
1525                 rc = videobuf_streamon(&fh->vb_vidq);
1526
1527         call_all(dev, video, s_stream, 1);
1528
1529         return rc;
1530 }
1531
1532 static int vidioc_streamoff(struct file *file, void *priv,
1533                             enum v4l2_buf_type type)
1534 {
1535         struct cx231xx_fh *fh = priv;
1536         struct cx231xx *dev = fh->dev;
1537         int rc;
1538
1539         rc = check_dev(dev);
1540         if (rc < 0)
1541                 return rc;
1542
1543         if (type != fh->type)
1544                 return -EINVAL;
1545
1546         cx25840_call(dev, video, s_stream, 0);
1547
1548         videobuf_streamoff(&fh->vb_vidq);
1549         res_free(fh);
1550
1551         return 0;
1552 }
1553
1554 int cx231xx_querycap(struct file *file, void *priv,
1555                            struct v4l2_capability *cap)
1556 {
1557         struct cx231xx_fh *fh = priv;
1558         struct cx231xx *dev = fh->dev;
1559
1560         strscpy(cap->driver, "cx231xx", sizeof(cap->driver));
1561         strscpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1562         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1563         cap->capabilities = V4L2_CAP_READWRITE |
1564                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1565                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1566         if (video_is_registered(&dev->radio_dev))
1567                 cap->capabilities |= V4L2_CAP_RADIO;
1568         if (dev->tuner_type != TUNER_ABSENT)
1569                 cap->capabilities |= V4L2_CAP_TUNER;
1570
1571         return 0;
1572 }
1573
1574 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1575                                    struct v4l2_fmtdesc *f)
1576 {
1577         if (unlikely(f->index >= ARRAY_SIZE(format)))
1578                 return -EINVAL;
1579
1580         f->pixelformat = format[f->index].fourcc;
1581
1582         return 0;
1583 }
1584
1585 /* RAW VBI ioctls */
1586
1587 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1588                                 struct v4l2_format *f)
1589 {
1590         struct cx231xx_fh *fh = priv;
1591         struct cx231xx *dev = fh->dev;
1592
1593         f->fmt.vbi.sampling_rate = 6750000 * 4;
1594         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1595         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1596         f->fmt.vbi.offset = 0;
1597         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1598             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1599         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1600             PAL_VBI_LINES : NTSC_VBI_LINES;
1601         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1602             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1603         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1604         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1605
1606         return 0;
1607
1608 }
1609
1610 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1611                                   struct v4l2_format *f)
1612 {
1613         struct cx231xx_fh *fh = priv;
1614         struct cx231xx *dev = fh->dev;
1615
1616         f->fmt.vbi.sampling_rate = 6750000 * 4;
1617         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1618         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1619         f->fmt.vbi.offset = 0;
1620         f->fmt.vbi.flags = 0;
1621         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1622             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1623         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1624             PAL_VBI_LINES : NTSC_VBI_LINES;
1625         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1626             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1627         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1628         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1629
1630         return 0;
1631
1632 }
1633
1634 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1635                                   struct v4l2_format *f)
1636 {
1637         struct cx231xx_fh *fh = priv;
1638         struct cx231xx *dev = fh->dev;
1639
1640         if (dev->vbi_stream_on && !fh->stream_on) {
1641                 dev_err(dev->dev,
1642                         "%s device in use by another fh\n", __func__);
1643                 return -EBUSY;
1644         }
1645         return vidioc_try_fmt_vbi_cap(file, priv, f);
1646 }
1647
1648 static int vidioc_reqbufs(struct file *file, void *priv,
1649                           struct v4l2_requestbuffers *rb)
1650 {
1651         struct cx231xx_fh *fh = priv;
1652         struct cx231xx *dev = fh->dev;
1653         int rc;
1654
1655         rc = check_dev(dev);
1656         if (rc < 0)
1657                 return rc;
1658
1659         return videobuf_reqbufs(&fh->vb_vidq, rb);
1660 }
1661
1662 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1663 {
1664         struct cx231xx_fh *fh = priv;
1665         struct cx231xx *dev = fh->dev;
1666         int rc;
1667
1668         rc = check_dev(dev);
1669         if (rc < 0)
1670                 return rc;
1671
1672         return videobuf_querybuf(&fh->vb_vidq, b);
1673 }
1674
1675 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1676 {
1677         struct cx231xx_fh *fh = priv;
1678         struct cx231xx *dev = fh->dev;
1679         int rc;
1680
1681         rc = check_dev(dev);
1682         if (rc < 0)
1683                 return rc;
1684
1685         return videobuf_qbuf(&fh->vb_vidq, b);
1686 }
1687
1688 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1689 {
1690         struct cx231xx_fh *fh = priv;
1691         struct cx231xx *dev = fh->dev;
1692         int rc;
1693
1694         rc = check_dev(dev);
1695         if (rc < 0)
1696                 return rc;
1697
1698         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1699 }
1700
1701 /* ----------------------------------------------------------- */
1702 /* RADIO ESPECIFIC IOCTLS                                      */
1703 /* ----------------------------------------------------------- */
1704
1705 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1706 {
1707         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1708
1709         if (t->index)
1710                 return -EINVAL;
1711
1712         strscpy(t->name, "Radio", sizeof(t->name));
1713
1714         call_all(dev, tuner, g_tuner, t);
1715
1716         return 0;
1717 }
1718 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1719 {
1720         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1721
1722         if (t->index)
1723                 return -EINVAL;
1724
1725         call_all(dev, tuner, s_tuner, t);
1726
1727         return 0;
1728 }
1729
1730 /*
1731  * cx231xx_v4l2_open()
1732  * inits the device and starts isoc transfer
1733  */
1734 static int cx231xx_v4l2_open(struct file *filp)
1735 {
1736         int radio = 0;
1737         struct video_device *vdev = video_devdata(filp);
1738         struct cx231xx *dev = video_drvdata(filp);
1739         struct cx231xx_fh *fh;
1740         enum v4l2_buf_type fh_type = 0;
1741
1742         switch (vdev->vfl_type) {
1743         case VFL_TYPE_GRABBER:
1744                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1745                 break;
1746         case VFL_TYPE_VBI:
1747                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1748                 break;
1749         case VFL_TYPE_RADIO:
1750                 radio = 1;
1751                 break;
1752         default:
1753                 return -EINVAL;
1754         }
1755
1756         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1757                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1758                          dev->users);
1759
1760 #if 0
1761         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1762         if (errCode < 0) {
1763                 dev_err(dev->dev,
1764                         "Device locked on digital mode. Can't open analog\n");
1765                 return -EBUSY;
1766         }
1767 #endif
1768
1769         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1770         if (!fh)
1771                 return -ENOMEM;
1772         if (mutex_lock_interruptible(&dev->lock)) {
1773                 kfree(fh);
1774                 return -ERESTARTSYS;
1775         }
1776         fh->dev = dev;
1777         fh->type = fh_type;
1778         filp->private_data = fh;
1779         v4l2_fh_init(&fh->fh, vdev);
1780
1781         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1782                 /* Power up in Analog TV mode */
1783                 if (dev->board.external_av)
1784                         cx231xx_set_power_mode(dev,
1785                                  POLARIS_AVMODE_ENXTERNAL_AV);
1786                 else
1787                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1788
1789 #if 0
1790                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1791 #endif
1792
1793                 /* set video alternate setting */
1794                 cx231xx_set_video_alternate(dev);
1795
1796                 /* Needed, since GPIO might have disabled power of
1797                    some i2c device */
1798                 cx231xx_config_i2c(dev);
1799
1800                 /* device needs to be initialized before isoc transfer */
1801                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1802
1803         }
1804         if (radio) {
1805                 cx231xx_videodbg("video_open: setting radio device\n");
1806
1807                 /* cx231xx_start_radio(dev); */
1808
1809                 call_all(dev, tuner, s_radio);
1810         }
1811
1812         dev->users++;
1813
1814         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1815                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1816                                             NULL, &dev->video_mode.slock,
1817                                             fh->type, V4L2_FIELD_INTERLACED,
1818                                             sizeof(struct cx231xx_buffer),
1819                                             fh, &dev->lock);
1820         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1821                 /* Set the required alternate setting  VBI interface works in
1822                    Bulk mode only */
1823                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1824
1825                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1826                                             NULL, &dev->vbi_mode.slock,
1827                                             fh->type, V4L2_FIELD_SEQ_TB,
1828                                             sizeof(struct cx231xx_buffer),
1829                                             fh, &dev->lock);
1830         }
1831         mutex_unlock(&dev->lock);
1832         v4l2_fh_add(&fh->fh);
1833
1834         return 0;
1835 }
1836
1837 /*
1838  * cx231xx_realease_resources()
1839  * unregisters the v4l2,i2c and usb devices
1840  * called when the device gets disconected or at module unload
1841 */
1842 void cx231xx_release_analog_resources(struct cx231xx *dev)
1843 {
1844
1845         /*FIXME: I2C IR should be disconnected */
1846
1847         if (video_is_registered(&dev->radio_dev))
1848                 video_unregister_device(&dev->radio_dev);
1849         if (video_is_registered(&dev->vbi_dev)) {
1850                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1851                         video_device_node_name(&dev->vbi_dev));
1852                 video_unregister_device(&dev->vbi_dev);
1853         }
1854         if (video_is_registered(&dev->vdev)) {
1855                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1856                         video_device_node_name(&dev->vdev));
1857
1858                 if (dev->board.has_417)
1859                         cx231xx_417_unregister(dev);
1860
1861                 video_unregister_device(&dev->vdev);
1862         }
1863         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1864         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1865 }
1866
1867 /*
1868  * cx231xx_close()
1869  * stops streaming and deallocates all resources allocated by the v4l2
1870  * calls and ioctls
1871  */
1872 static int cx231xx_close(struct file *filp)
1873 {
1874         struct cx231xx_fh *fh = filp->private_data;
1875         struct cx231xx *dev = fh->dev;
1876
1877         cx231xx_videodbg("users=%d\n", dev->users);
1878
1879         cx231xx_videodbg("users=%d\n", dev->users);
1880         if (res_check(fh))
1881                 res_free(fh);
1882
1883         /*
1884          * To workaround error number=-71 on EP0 for VideoGrabber,
1885          *       need exclude following.
1886          * FIXME: It is probably safe to remove most of these, as we're
1887          * now avoiding the alternate setting for INDEX_VANC
1888          */
1889         if (!dev->board.no_alt_vanc)
1890                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1891                         videobuf_stop(&fh->vb_vidq);
1892                         videobuf_mmap_free(&fh->vb_vidq);
1893
1894                         /* the device is already disconnect,
1895                            free the remaining resources */
1896                         if (dev->state & DEV_DISCONNECTED) {
1897                                 if (atomic_read(&dev->devlist_count) > 0) {
1898                                         cx231xx_release_resources(dev);
1899                                         fh->dev = NULL;
1900                                         return 0;
1901                                 }
1902                                 return 0;
1903                         }
1904
1905                         /* do this before setting alternate! */
1906                         cx231xx_uninit_vbi_isoc(dev);
1907
1908                         /* set alternate 0 */
1909                         if (!dev->vbi_or_sliced_cc_mode)
1910                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1911                         else
1912                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1913
1914                         v4l2_fh_del(&fh->fh);
1915                         v4l2_fh_exit(&fh->fh);
1916                         kfree(fh);
1917                         dev->users--;
1918                         wake_up_interruptible(&dev->open);
1919                         return 0;
1920                 }
1921
1922         v4l2_fh_del(&fh->fh);
1923         dev->users--;
1924         if (!dev->users) {
1925                 videobuf_stop(&fh->vb_vidq);
1926                 videobuf_mmap_free(&fh->vb_vidq);
1927
1928                 /* the device is already disconnect,
1929                    free the remaining resources */
1930                 if (dev->state & DEV_DISCONNECTED) {
1931                         cx231xx_release_resources(dev);
1932                         fh->dev = NULL;
1933                         return 0;
1934                 }
1935
1936                 /* Save some power by putting tuner to sleep */
1937                 call_all(dev, tuner, standby);
1938
1939                 /* do this before setting alternate! */
1940                 if (dev->USE_ISO)
1941                         cx231xx_uninit_isoc(dev);
1942                 else
1943                         cx231xx_uninit_bulk(dev);
1944                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1945
1946                 /* set alternate 0 */
1947                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1948         }
1949         v4l2_fh_exit(&fh->fh);
1950         kfree(fh);
1951         wake_up_interruptible(&dev->open);
1952         return 0;
1953 }
1954
1955 static int cx231xx_v4l2_close(struct file *filp)
1956 {
1957         struct cx231xx_fh *fh = filp->private_data;
1958         struct cx231xx *dev = fh->dev;
1959         int rc;
1960
1961         mutex_lock(&dev->lock);
1962         rc = cx231xx_close(filp);
1963         mutex_unlock(&dev->lock);
1964         return rc;
1965 }
1966
1967 /*
1968  * cx231xx_v4l2_read()
1969  * will allocate buffers when called for the first time
1970  */
1971 static ssize_t
1972 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1973                   loff_t *pos)
1974 {
1975         struct cx231xx_fh *fh = filp->private_data;
1976         struct cx231xx *dev = fh->dev;
1977         int rc;
1978
1979         rc = check_dev(dev);
1980         if (rc < 0)
1981                 return rc;
1982
1983         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1984             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1985                 rc = res_get(fh);
1986
1987                 if (unlikely(rc < 0))
1988                         return rc;
1989
1990                 if (mutex_lock_interruptible(&dev->lock))
1991                         return -ERESTARTSYS;
1992                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1993                                             filp->f_flags & O_NONBLOCK);
1994                 mutex_unlock(&dev->lock);
1995                 return rc;
1996         }
1997         return 0;
1998 }
1999
2000 /*
2001  * cx231xx_v4l2_poll()
2002  * will allocate buffers when called for the first time
2003  */
2004 static __poll_t cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
2005 {
2006         __poll_t req_events = poll_requested_events(wait);
2007         struct cx231xx_fh *fh = filp->private_data;
2008         struct cx231xx *dev = fh->dev;
2009         __poll_t res = 0;
2010         int rc;
2011
2012         rc = check_dev(dev);
2013         if (rc < 0)
2014                 return EPOLLERR;
2015
2016         rc = res_get(fh);
2017
2018         if (unlikely(rc < 0))
2019                 return EPOLLERR;
2020
2021         if (v4l2_event_pending(&fh->fh))
2022                 res |= EPOLLPRI;
2023         else
2024                 poll_wait(filp, &fh->fh.wait, wait);
2025
2026         if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
2027                 return res;
2028
2029         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2030             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
2031                 mutex_lock(&dev->lock);
2032                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2033                 mutex_unlock(&dev->lock);
2034                 return res;
2035         }
2036         return res | EPOLLERR;
2037 }
2038
2039 /*
2040  * cx231xx_v4l2_mmap()
2041  */
2042 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2043 {
2044         struct cx231xx_fh *fh = filp->private_data;
2045         struct cx231xx *dev = fh->dev;
2046         int rc;
2047
2048         rc = check_dev(dev);
2049         if (rc < 0)
2050                 return rc;
2051
2052         rc = res_get(fh);
2053
2054         if (unlikely(rc < 0))
2055                 return rc;
2056
2057         if (mutex_lock_interruptible(&dev->lock))
2058                 return -ERESTARTSYS;
2059         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2060         mutex_unlock(&dev->lock);
2061
2062         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2063                          (unsigned long)vma->vm_start,
2064                          (unsigned long)vma->vm_end -
2065                          (unsigned long)vma->vm_start, rc);
2066
2067         return rc;
2068 }
2069
2070 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2071         .owner   = THIS_MODULE,
2072         .open    = cx231xx_v4l2_open,
2073         .release = cx231xx_v4l2_close,
2074         .read    = cx231xx_v4l2_read,
2075         .poll    = cx231xx_v4l2_poll,
2076         .mmap    = cx231xx_v4l2_mmap,
2077         .unlocked_ioctl   = video_ioctl2,
2078 };
2079
2080 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2081         .vidioc_querycap               = cx231xx_querycap,
2082         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2083         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2084         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2085         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2086         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2087         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2088         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
2089         .vidioc_g_pixelaspect          = vidioc_g_pixelaspect,
2090         .vidioc_g_selection            = vidioc_g_selection,
2091         .vidioc_reqbufs                = vidioc_reqbufs,
2092         .vidioc_querybuf               = vidioc_querybuf,
2093         .vidioc_qbuf                   = vidioc_qbuf,
2094         .vidioc_dqbuf                  = vidioc_dqbuf,
2095         .vidioc_s_std                  = vidioc_s_std,
2096         .vidioc_g_std                  = vidioc_g_std,
2097         .vidioc_enum_input             = cx231xx_enum_input,
2098         .vidioc_g_input                = cx231xx_g_input,
2099         .vidioc_s_input                = cx231xx_s_input,
2100         .vidioc_streamon               = vidioc_streamon,
2101         .vidioc_streamoff              = vidioc_streamoff,
2102         .vidioc_g_tuner                = cx231xx_g_tuner,
2103         .vidioc_s_tuner                = cx231xx_s_tuner,
2104         .vidioc_g_frequency            = cx231xx_g_frequency,
2105         .vidioc_s_frequency            = cx231xx_s_frequency,
2106 #ifdef CONFIG_VIDEO_ADV_DEBUG
2107         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2108         .vidioc_g_register             = cx231xx_g_register,
2109         .vidioc_s_register             = cx231xx_s_register,
2110 #endif
2111         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2112         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2113 };
2114
2115 static struct video_device cx231xx_vbi_template;
2116
2117 static const struct video_device cx231xx_video_template = {
2118         .fops         = &cx231xx_v4l_fops,
2119         .release      = video_device_release_empty,
2120         .ioctl_ops    = &video_ioctl_ops,
2121         .tvnorms      = V4L2_STD_ALL,
2122 };
2123
2124 static const struct v4l2_file_operations radio_fops = {
2125         .owner   = THIS_MODULE,
2126         .open   = cx231xx_v4l2_open,
2127         .release = cx231xx_v4l2_close,
2128         .poll = v4l2_ctrl_poll,
2129         .unlocked_ioctl = video_ioctl2,
2130 };
2131
2132 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2133         .vidioc_querycap    = cx231xx_querycap,
2134         .vidioc_g_tuner     = radio_g_tuner,
2135         .vidioc_s_tuner     = radio_s_tuner,
2136         .vidioc_g_frequency = cx231xx_g_frequency,
2137         .vidioc_s_frequency = cx231xx_s_frequency,
2138 #ifdef CONFIG_VIDEO_ADV_DEBUG
2139         .vidioc_g_chip_info = cx231xx_g_chip_info,
2140         .vidioc_g_register  = cx231xx_g_register,
2141         .vidioc_s_register  = cx231xx_s_register,
2142 #endif
2143         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2144         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2145 };
2146
2147 static struct video_device cx231xx_radio_template = {
2148         .name      = "cx231xx-radio",
2149         .fops      = &radio_fops,
2150         .ioctl_ops = &radio_ioctl_ops,
2151 };
2152
2153 /******************************** usb interface ******************************/
2154
2155 static void cx231xx_vdev_init(struct cx231xx *dev,
2156                 struct video_device *vfd,
2157                 const struct video_device *template,
2158                 const char *type_name)
2159 {
2160         *vfd = *template;
2161         vfd->v4l2_dev = &dev->v4l2_dev;
2162         vfd->release = video_device_release_empty;
2163         vfd->lock = &dev->lock;
2164
2165         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2166
2167         video_set_drvdata(vfd, dev);
2168         if (dev->tuner_type == TUNER_ABSENT) {
2169                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2170                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2171                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2172                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2173         }
2174 }
2175
2176 int cx231xx_register_analog_devices(struct cx231xx *dev)
2177 {
2178         int ret;
2179
2180         dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2181
2182         /* set default norm */
2183         dev->norm = V4L2_STD_PAL;
2184         dev->width = norm_maxw(dev);
2185         dev->height = norm_maxh(dev);
2186         dev->interlaced = 0;
2187
2188         /* Analog specific initialization */
2189         dev->format = &format[0];
2190
2191         /* Set the initial input */
2192         video_mux(dev, dev->video_input);
2193
2194         call_all(dev, video, s_std, dev->norm);
2195
2196         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2197         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2198
2199         if (dev->sd_cx25840) {
2200                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2201                                 dev->sd_cx25840->ctrl_handler, NULL, true);
2202                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2203                                 dev->sd_cx25840->ctrl_handler,
2204                                 v4l2_ctrl_radio_filter, true);
2205         }
2206
2207         if (dev->ctrl_handler.error)
2208                 return dev->ctrl_handler.error;
2209         if (dev->radio_ctrl_handler.error)
2210                 return dev->radio_ctrl_handler.error;
2211
2212         /* enable vbi capturing */
2213         /* write code here...  */
2214
2215         /* allocate and fill video video_device struct */
2216         cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2217 #if defined(CONFIG_MEDIA_CONTROLLER)
2218         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2219         ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
2220         if (ret < 0)
2221                 dev_err(dev->dev, "failed to initialize video media entity!\n");
2222 #endif
2223         dev->vdev.ctrl_handler = &dev->ctrl_handler;
2224         dev->vdev.device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
2225                                 V4L2_CAP_VIDEO_CAPTURE;
2226         if (dev->tuner_type != TUNER_ABSENT)
2227                 dev->vdev.device_caps |= V4L2_CAP_TUNER;
2228
2229         /* register v4l2 video video_device */
2230         ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2231                                     video_nr[dev->devno]);
2232         if (ret) {
2233                 dev_err(dev->dev,
2234                         "unable to register video device (error=%i).\n",
2235                         ret);
2236                 return ret;
2237         }
2238
2239         dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2240                 video_device_node_name(&dev->vdev));
2241
2242         /* Initialize VBI template */
2243         cx231xx_vbi_template = cx231xx_video_template;
2244         strscpy(cx231xx_vbi_template.name, "cx231xx-vbi",
2245                 sizeof(cx231xx_vbi_template.name));
2246
2247         /* Allocate and fill vbi video_device struct */
2248         cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2249
2250 #if defined(CONFIG_MEDIA_CONTROLLER)
2251         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2252         ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
2253         if (ret < 0)
2254                 dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2255 #endif
2256         dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2257         dev->vbi_dev.device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
2258                                    V4L2_CAP_VBI_CAPTURE;
2259         if (dev->tuner_type != TUNER_ABSENT)
2260                 dev->vbi_dev.device_caps |= V4L2_CAP_TUNER;
2261
2262         /* register v4l2 vbi video_device */
2263         ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2264                                     vbi_nr[dev->devno]);
2265         if (ret < 0) {
2266                 dev_err(dev->dev, "unable to register vbi device\n");
2267                 return ret;
2268         }
2269
2270         dev_info(dev->dev, "Registered VBI device %s\n",
2271                 video_device_node_name(&dev->vbi_dev));
2272
2273         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2274                 cx231xx_vdev_init(dev, &dev->radio_dev,
2275                                 &cx231xx_radio_template, "radio");
2276                 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2277                 dev->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
2278                 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2279                                             radio_nr[dev->devno]);
2280                 if (ret < 0) {
2281                         dev_err(dev->dev,
2282                                 "can't register radio device\n");
2283                         return ret;
2284                 }
2285                 dev_info(dev->dev, "Registered radio device as %s\n",
2286                         video_device_node_name(&dev->radio_dev));
2287         }
2288
2289         return 0;
2290 }