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 <media/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 synchronously";
 203                 break;
 204         case -ECONNRESET:
 205                 errmsg = "unlinked asynchronously";
 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 const 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 };
1107
1108 void cx231xx_v4l2_create_entities(struct cx231xx *dev)
1109 {
1110 #if defined(CONFIG_MEDIA_CONTROLLER)
1111         int ret, i;
1112
1113         /* Create entities for each input connector */
1114         for (i = 0; i < MAX_CX231XX_INPUT; i++) {
1115                 struct media_entity *ent = &dev->input_ent[i];
1116
1117                 if (!INPUT(i)->type)
1118                         break;
1119
1120                 ent->name = iname[INPUT(i)->type];
1121                 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1122                 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1123
1124                 switch (INPUT(i)->type) {
1125                 case CX231XX_VMUX_COMPOSITE1:
1126                         ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1127                         break;
1128                 case CX231XX_VMUX_SVIDEO:
1129                         ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1130                         break;
1131                 case CX231XX_VMUX_TELEVISION:
1132                 case CX231XX_VMUX_CABLE:
1133                 case CX231XX_VMUX_DVB:
1134                         /* The DVB core will handle it */
1135                         if (dev->tuner_type == TUNER_ABSENT)
1136                                 continue;
1137                         /* fall through */
1138                 default: /* just to shut up a gcc warning */
1139                         ent->function = MEDIA_ENT_F_CONN_RF;
1140                         break;
1141                 }
1142
1143                 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1144                 if (ret < 0)
1145                         pr_err("failed to initialize input pad[%d]!\n", i);
1146
1147                 ret = media_device_register_entity(dev->media_dev, ent);
1148                 if (ret < 0)
1149                         pr_err("failed to register input entity %d!\n", i);
1150         }
1151 #endif
1152 }
1153
1154 int cx231xx_enum_input(struct file *file, void *priv,
1155                              struct v4l2_input *i)
1156 {
1157         struct cx231xx_fh *fh = priv;
1158         struct cx231xx *dev = fh->dev;
1159         u32 gen_stat;
1160         unsigned int n;
1161         int ret;
1162
1163         n = i->index;
1164         if (n >= MAX_CX231XX_INPUT)
1165                 return -EINVAL;
1166         if (0 == INPUT(n)->type)
1167                 return -EINVAL;
1168
1169         i->index = n;
1170         i->type = V4L2_INPUT_TYPE_CAMERA;
1171
1172         strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name));
1173
1174         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1175             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1176                 i->type = V4L2_INPUT_TYPE_TUNER;
1177
1178         i->std = dev->vdev.tvnorms;
1179
1180         /* If they are asking about the active input, read signal status */
1181         if (n == dev->video_input) {
1182                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1183                                             GEN_STAT, 2, &gen_stat, 4);
1184                 if (ret > 0) {
1185                         if ((gen_stat & FLD_VPRES) == 0x00)
1186                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1187                         if ((gen_stat & FLD_HLOCK) == 0x00)
1188                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1189                 }
1190         }
1191
1192         return 0;
1193 }
1194
1195 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1196 {
1197         struct cx231xx_fh *fh = priv;
1198         struct cx231xx *dev = fh->dev;
1199
1200         *i = dev->video_input;
1201
1202         return 0;
1203 }
1204
1205 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1206 {
1207         struct cx231xx_fh *fh = priv;
1208         struct cx231xx *dev = fh->dev;
1209         int rc;
1210
1211         dev->mode_tv = 0;
1212         rc = check_dev(dev);
1213         if (rc < 0)
1214                 return rc;
1215
1216         if (i >= MAX_CX231XX_INPUT)
1217                 return -EINVAL;
1218         if (0 == INPUT(i)->type)
1219                 return -EINVAL;
1220
1221         video_mux(dev, i);
1222
1223         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1224             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1225                 /* There's a tuner, so reset the standard and put it on the
1226                    last known frequency (since it was probably powered down
1227                    until now */
1228                 call_all(dev, video, s_std, dev->norm);
1229         }
1230
1231         return 0;
1232 }
1233
1234 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1235 {
1236         struct cx231xx_fh *fh = priv;
1237         struct cx231xx *dev = fh->dev;
1238         int rc;
1239
1240         rc = check_dev(dev);
1241         if (rc < 0)
1242                 return rc;
1243
1244         if (0 != t->index)
1245                 return -EINVAL;
1246
1247         strscpy(t->name, "Tuner", sizeof(t->name));
1248
1249         t->type = V4L2_TUNER_ANALOG_TV;
1250         t->capability = V4L2_TUNER_CAP_NORM;
1251         t->rangehigh = 0xffffffffUL;
1252         t->signal = 0xffff;     /* LOCKED */
1253         call_all(dev, tuner, g_tuner, t);
1254
1255         return 0;
1256 }
1257
1258 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1259 {
1260         struct cx231xx_fh *fh = priv;
1261         struct cx231xx *dev = fh->dev;
1262         int rc;
1263
1264         rc = check_dev(dev);
1265         if (rc < 0)
1266                 return rc;
1267
1268         if (0 != t->index)
1269                 return -EINVAL;
1270 #if 0
1271         call_all(dev, tuner, s_tuner, t);
1272 #endif
1273         return 0;
1274 }
1275
1276 int cx231xx_g_frequency(struct file *file, void *priv,
1277                               struct v4l2_frequency *f)
1278 {
1279         struct cx231xx_fh *fh = priv;
1280         struct cx231xx *dev = fh->dev;
1281
1282         if (f->tuner)
1283                 return -EINVAL;
1284
1285         f->frequency = dev->ctl_freq;
1286
1287         return 0;
1288 }
1289
1290 int cx231xx_s_frequency(struct file *file, void *priv,
1291                               const struct v4l2_frequency *f)
1292 {
1293         struct cx231xx_fh *fh = priv;
1294         struct cx231xx *dev = fh->dev;
1295         struct v4l2_frequency new_freq = *f;
1296         int rc;
1297         u32 if_frequency = 5400000;
1298
1299         dev_dbg(dev->dev,
1300                 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1301                 f->frequency, f->type);
1302
1303         rc = check_dev(dev);
1304         if (rc < 0)
1305                 return rc;
1306
1307         if (0 != f->tuner)
1308                 return -EINVAL;
1309
1310         /* set pre channel change settings in DIF first */
1311         rc = cx231xx_tuner_pre_channel_change(dev);
1312
1313         call_all(dev, tuner, s_frequency, f);
1314         call_all(dev, tuner, g_frequency, &new_freq);
1315         dev->ctl_freq = new_freq.frequency;
1316
1317         /* set post channel change settings in DIF first */
1318         rc = cx231xx_tuner_post_channel_change(dev);
1319
1320         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1321                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1322                         if_frequency = 5400000;  /*5.4MHz       */
1323                 else if (dev->norm & V4L2_STD_B)
1324                         if_frequency = 6000000;  /*6.0MHz       */
1325                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1326                         if_frequency = 6900000;  /*6.9MHz       */
1327                 else if (dev->norm & V4L2_STD_GH)
1328                         if_frequency = 7100000;  /*7.1MHz       */
1329                 else if (dev->norm & V4L2_STD_PAL_I)
1330                         if_frequency = 7250000;  /*7.25MHz      */
1331                 else if (dev->norm & V4L2_STD_SECAM_L)
1332                         if_frequency = 6900000;  /*6.9MHz       */
1333                 else if (dev->norm & V4L2_STD_SECAM_LC)
1334                         if_frequency = 1250000;  /*1.25MHz      */
1335
1336                 dev_dbg(dev->dev,
1337                         "if_frequency is set to %d\n", if_frequency);
1338                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1339
1340                 update_HH_register_after_set_DIF(dev);
1341         }
1342
1343         dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1344
1345         return rc;
1346 }
1347
1348 #ifdef CONFIG_VIDEO_ADV_DEBUG
1349
1350 int cx231xx_g_chip_info(struct file *file, void *fh,
1351                         struct v4l2_dbg_chip_info *chip)
1352 {
1353         switch (chip->match.addr) {
1354         case 0: /* Cx231xx - internal registers */
1355                 return 0;
1356         case 1: /* AFE - read byte */
1357                 strscpy(chip->name, "AFE (byte)", sizeof(chip->name));
1358                 return 0;
1359         case 2: /* Video Block - read byte */
1360                 strscpy(chip->name, "Video (byte)", sizeof(chip->name));
1361                 return 0;
1362         case 3: /* I2S block - read byte */
1363                 strscpy(chip->name, "I2S (byte)", sizeof(chip->name));
1364                 return 0;
1365         case 4: /* AFE - read dword */
1366                 strscpy(chip->name, "AFE (dword)", sizeof(chip->name));
1367                 return 0;
1368         case 5: /* Video Block - read dword */
1369                 strscpy(chip->name, "Video (dword)", sizeof(chip->name));
1370                 return 0;
1371         case 6: /* I2S Block - read dword */
1372                 strscpy(chip->name, "I2S (dword)", sizeof(chip->name));
1373                 return 0;
1374         }
1375         return -EINVAL;
1376 }
1377
1378 int cx231xx_g_register(struct file *file, void *priv,
1379                              struct v4l2_dbg_register *reg)
1380 {
1381         struct cx231xx_fh *fh = priv;
1382         struct cx231xx *dev = fh->dev;
1383         int ret;
1384         u8 value[4] = { 0, 0, 0, 0 };
1385         u32 data = 0;
1386
1387         switch (reg->match.addr) {
1388         case 0: /* Cx231xx - internal registers */
1389                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1390                                 (u16)reg->reg, value, 4);
1391                 reg->val = value[0] | value[1] << 8 |
1392                         value[2] << 16 | (u32)value[3] << 24;
1393                 reg->size = 4;
1394                 break;
1395         case 1: /* AFE - read byte */
1396                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1397                                 (u16)reg->reg, 2, &data, 1);
1398                 reg->val = data;
1399                 reg->size = 1;
1400                 break;
1401         case 2: /* Video Block - read byte */
1402                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1403                                 (u16)reg->reg, 2, &data, 1);
1404                 reg->val = data;
1405                 reg->size = 1;
1406                 break;
1407         case 3: /* I2S block - read byte */
1408                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1409                                 (u16)reg->reg, 1, &data, 1);
1410                 reg->val = data;
1411                 reg->size = 1;
1412                 break;
1413         case 4: /* AFE - read dword */
1414                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1415                                 (u16)reg->reg, 2, &data, 4);
1416                 reg->val = data;
1417                 reg->size = 4;
1418                 break;
1419         case 5: /* Video Block - read dword */
1420                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1421                                 (u16)reg->reg, 2, &data, 4);
1422                 reg->val = data;
1423                 reg->size = 4;
1424                 break;
1425         case 6: /* I2S Block - read dword */
1426                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1427                                 (u16)reg->reg, 1, &data, 4);
1428                 reg->val = data;
1429                 reg->size = 4;
1430                 break;
1431         default:
1432                 return -EINVAL;
1433         }
1434         return ret < 0 ? ret : 0;
1435 }
1436
1437 int cx231xx_s_register(struct file *file, void *priv,
1438                              const struct v4l2_dbg_register *reg)
1439 {
1440         struct cx231xx_fh *fh = priv;
1441         struct cx231xx *dev = fh->dev;
1442         int ret;
1443         u8 data[4] = { 0, 0, 0, 0 };
1444
1445         switch (reg->match.addr) {
1446         case 0: /* cx231xx internal registers */
1447                 data[0] = (u8) reg->val;
1448                 data[1] = (u8) (reg->val >> 8);
1449                 data[2] = (u8) (reg->val >> 16);
1450                 data[3] = (u8) (reg->val >> 24);
1451                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1452                                 (u16)reg->reg, data, 4);
1453                 break;
1454         case 1: /* AFE - write byte */
1455                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1456                                 (u16)reg->reg, 2, reg->val, 1);
1457                 break;
1458         case 2: /* Video Block - write byte */
1459                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1460                                 (u16)reg->reg, 2, reg->val, 1);
1461                 break;
1462         case 3: /* I2S block - write byte */
1463                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1464                                 (u16)reg->reg, 1, reg->val, 1);
1465                 break;
1466         case 4: /* AFE - write dword */
1467                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1468                                 (u16)reg->reg, 2, reg->val, 4);
1469                 break;
1470         case 5: /* Video Block - write dword */
1471                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1472                                 (u16)reg->reg, 2, reg->val, 4);
1473                 break;
1474         case 6: /* I2S block - write dword */
1475                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1476                                 (u16)reg->reg, 1, reg->val, 4);
1477                 break;
1478         default:
1479                 return -EINVAL;
1480         }
1481         return ret < 0 ? ret : 0;
1482 }
1483 #endif
1484
1485 static int vidioc_cropcap(struct file *file, void *priv,
1486                           struct v4l2_cropcap *cc)
1487 {
1488         struct cx231xx_fh *fh = priv;
1489         struct cx231xx *dev = fh->dev;
1490         bool is_50hz = dev->norm & V4L2_STD_625_50;
1491
1492         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1493                 return -EINVAL;
1494
1495         cc->bounds.left = 0;
1496         cc->bounds.top = 0;
1497         cc->bounds.width = dev->width;
1498         cc->bounds.height = dev->height;
1499         cc->defrect = cc->bounds;
1500         cc->pixelaspect.numerator = is_50hz ? 54 : 11;
1501         cc->pixelaspect.denominator = is_50hz ? 59 : 10;
1502
1503         return 0;
1504 }
1505
1506 static int vidioc_streamon(struct file *file, void *priv,
1507                            enum v4l2_buf_type type)
1508 {
1509         struct cx231xx_fh *fh = priv;
1510         struct cx231xx *dev = fh->dev;
1511         int rc;
1512
1513         rc = check_dev(dev);
1514         if (rc < 0)
1515                 return rc;
1516
1517         rc = res_get(fh);
1518
1519         if (likely(rc >= 0))
1520                 rc = videobuf_streamon(&fh->vb_vidq);
1521
1522         call_all(dev, video, s_stream, 1);
1523
1524         return rc;
1525 }
1526
1527 static int vidioc_streamoff(struct file *file, void *priv,
1528                             enum v4l2_buf_type type)
1529 {
1530         struct cx231xx_fh *fh = priv;
1531         struct cx231xx *dev = fh->dev;
1532         int rc;
1533
1534         rc = check_dev(dev);
1535         if (rc < 0)
1536                 return rc;
1537
1538         if (type != fh->type)
1539                 return -EINVAL;
1540
1541         cx25840_call(dev, video, s_stream, 0);
1542
1543         videobuf_streamoff(&fh->vb_vidq);
1544         res_free(fh);
1545
1546         return 0;
1547 }
1548
1549 int cx231xx_querycap(struct file *file, void *priv,
1550                            struct v4l2_capability *cap)
1551 {
1552         struct video_device *vdev = video_devdata(file);
1553         struct cx231xx_fh *fh = priv;
1554         struct cx231xx *dev = fh->dev;
1555
1556         strscpy(cap->driver, "cx231xx", sizeof(cap->driver));
1557         strscpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1558         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1559
1560         if (vdev->vfl_type == VFL_TYPE_RADIO)
1561                 cap->device_caps = V4L2_CAP_RADIO;
1562         else {
1563                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1564                 if (vdev->vfl_type == VFL_TYPE_VBI)
1565                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1566                 else
1567                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1568         }
1569         if (dev->tuner_type != TUNER_ABSENT)
1570                 cap->device_caps |= V4L2_CAP_TUNER;
1571         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1572                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1573                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1574         if (video_is_registered(&dev->radio_dev))
1575                 cap->capabilities |= V4L2_CAP_RADIO;
1576
1577         return 0;
1578 }
1579
1580 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1581                                    struct v4l2_fmtdesc *f)
1582 {
1583         if (unlikely(f->index >= ARRAY_SIZE(format)))
1584                 return -EINVAL;
1585
1586         strscpy(f->description, format[f->index].name, sizeof(f->description));
1587         f->pixelformat = format[f->index].fourcc;
1588
1589         return 0;
1590 }
1591
1592 /* RAW VBI ioctls */
1593
1594 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1595                                 struct v4l2_format *f)
1596 {
1597         struct cx231xx_fh *fh = priv;
1598         struct cx231xx *dev = fh->dev;
1599
1600         f->fmt.vbi.sampling_rate = 6750000 * 4;
1601         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1602         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1603         f->fmt.vbi.offset = 0;
1604         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1605             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1606         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1607             PAL_VBI_LINES : NTSC_VBI_LINES;
1608         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1609             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1610         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1611         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1612
1613         return 0;
1614
1615 }
1616
1617 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1618                                   struct v4l2_format *f)
1619 {
1620         struct cx231xx_fh *fh = priv;
1621         struct cx231xx *dev = fh->dev;
1622
1623         f->fmt.vbi.sampling_rate = 6750000 * 4;
1624         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1625         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1626         f->fmt.vbi.offset = 0;
1627         f->fmt.vbi.flags = 0;
1628         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1629             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1630         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1631             PAL_VBI_LINES : NTSC_VBI_LINES;
1632         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1633             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1634         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1635         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1636
1637         return 0;
1638
1639 }
1640
1641 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1642                                   struct v4l2_format *f)
1643 {
1644         struct cx231xx_fh *fh = priv;
1645         struct cx231xx *dev = fh->dev;
1646
1647         if (dev->vbi_stream_on && !fh->stream_on) {
1648                 dev_err(dev->dev,
1649                         "%s device in use by another fh\n", __func__);
1650                 return -EBUSY;
1651         }
1652         return vidioc_try_fmt_vbi_cap(file, priv, f);
1653 }
1654
1655 static int vidioc_reqbufs(struct file *file, void *priv,
1656                           struct v4l2_requestbuffers *rb)
1657 {
1658         struct cx231xx_fh *fh = priv;
1659         struct cx231xx *dev = fh->dev;
1660         int rc;
1661
1662         rc = check_dev(dev);
1663         if (rc < 0)
1664                 return rc;
1665
1666         return videobuf_reqbufs(&fh->vb_vidq, rb);
1667 }
1668
1669 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1670 {
1671         struct cx231xx_fh *fh = priv;
1672         struct cx231xx *dev = fh->dev;
1673         int rc;
1674
1675         rc = check_dev(dev);
1676         if (rc < 0)
1677                 return rc;
1678
1679         return videobuf_querybuf(&fh->vb_vidq, b);
1680 }
1681
1682 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1683 {
1684         struct cx231xx_fh *fh = priv;
1685         struct cx231xx *dev = fh->dev;
1686         int rc;
1687
1688         rc = check_dev(dev);
1689         if (rc < 0)
1690                 return rc;
1691
1692         return videobuf_qbuf(&fh->vb_vidq, b);
1693 }
1694
1695 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1696 {
1697         struct cx231xx_fh *fh = priv;
1698         struct cx231xx *dev = fh->dev;
1699         int rc;
1700
1701         rc = check_dev(dev);
1702         if (rc < 0)
1703                 return rc;
1704
1705         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1706 }
1707
1708 /* ----------------------------------------------------------- */
1709 /* RADIO ESPECIFIC IOCTLS                                      */
1710 /* ----------------------------------------------------------- */
1711
1712 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1713 {
1714         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1715
1716         if (t->index)
1717                 return -EINVAL;
1718
1719         strscpy(t->name, "Radio", sizeof(t->name));
1720
1721         call_all(dev, tuner, g_tuner, t);
1722
1723         return 0;
1724 }
1725 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1726 {
1727         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1728
1729         if (t->index)
1730                 return -EINVAL;
1731
1732         call_all(dev, tuner, s_tuner, t);
1733
1734         return 0;
1735 }
1736
1737 /*
1738  * cx231xx_v4l2_open()
1739  * inits the device and starts isoc transfer
1740  */
1741 static int cx231xx_v4l2_open(struct file *filp)
1742 {
1743         int radio = 0;
1744         struct video_device *vdev = video_devdata(filp);
1745         struct cx231xx *dev = video_drvdata(filp);
1746         struct cx231xx_fh *fh;
1747         enum v4l2_buf_type fh_type = 0;
1748
1749         switch (vdev->vfl_type) {
1750         case VFL_TYPE_GRABBER:
1751                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1752                 break;
1753         case VFL_TYPE_VBI:
1754                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1755                 break;
1756         case VFL_TYPE_RADIO:
1757                 radio = 1;
1758                 break;
1759         default:
1760                 return -EINVAL;
1761         }
1762
1763         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1764                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1765                          dev->users);
1766
1767 #if 0
1768         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1769         if (errCode < 0) {
1770                 dev_err(dev->dev,
1771                         "Device locked on digital mode. Can't open analog\n");
1772                 return -EBUSY;
1773         }
1774 #endif
1775
1776         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1777         if (!fh)
1778                 return -ENOMEM;
1779         if (mutex_lock_interruptible(&dev->lock)) {
1780                 kfree(fh);
1781                 return -ERESTARTSYS;
1782         }
1783         fh->dev = dev;
1784         fh->type = fh_type;
1785         filp->private_data = fh;
1786         v4l2_fh_init(&fh->fh, vdev);
1787
1788         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1789                 /* Power up in Analog TV mode */
1790                 if (dev->board.external_av)
1791                         cx231xx_set_power_mode(dev,
1792                                  POLARIS_AVMODE_ENXTERNAL_AV);
1793                 else
1794                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1795
1796 #if 0
1797                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1798 #endif
1799
1800                 /* set video alternate setting */
1801                 cx231xx_set_video_alternate(dev);
1802
1803                 /* Needed, since GPIO might have disabled power of
1804                    some i2c device */
1805                 cx231xx_config_i2c(dev);
1806
1807                 /* device needs to be initialized before isoc transfer */
1808                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1809
1810         }
1811         if (radio) {
1812                 cx231xx_videodbg("video_open: setting radio device\n");
1813
1814                 /* cx231xx_start_radio(dev); */
1815
1816                 call_all(dev, tuner, s_radio);
1817         }
1818
1819         dev->users++;
1820
1821         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1822                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1823                                             NULL, &dev->video_mode.slock,
1824                                             fh->type, V4L2_FIELD_INTERLACED,
1825                                             sizeof(struct cx231xx_buffer),
1826                                             fh, &dev->lock);
1827         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1828                 /* Set the required alternate setting  VBI interface works in
1829                    Bulk mode only */
1830                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1831
1832                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1833                                             NULL, &dev->vbi_mode.slock,
1834                                             fh->type, V4L2_FIELD_SEQ_TB,
1835                                             sizeof(struct cx231xx_buffer),
1836                                             fh, &dev->lock);
1837         }
1838         mutex_unlock(&dev->lock);
1839         v4l2_fh_add(&fh->fh);
1840
1841         return 0;
1842 }
1843
1844 /*
1845  * cx231xx_realease_resources()
1846  * unregisters the v4l2,i2c and usb devices
1847  * called when the device gets disconected or at module unload
1848 */
1849 void cx231xx_release_analog_resources(struct cx231xx *dev)
1850 {
1851
1852         /*FIXME: I2C IR should be disconnected */
1853
1854         if (video_is_registered(&dev->radio_dev))
1855                 video_unregister_device(&dev->radio_dev);
1856         if (video_is_registered(&dev->vbi_dev)) {
1857                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1858                         video_device_node_name(&dev->vbi_dev));
1859                 video_unregister_device(&dev->vbi_dev);
1860         }
1861         if (video_is_registered(&dev->vdev)) {
1862                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1863                         video_device_node_name(&dev->vdev));
1864
1865                 if (dev->board.has_417)
1866                         cx231xx_417_unregister(dev);
1867
1868                 video_unregister_device(&dev->vdev);
1869         }
1870         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1871         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1872 }
1873
1874 /*
1875  * cx231xx_close()
1876  * stops streaming and deallocates all resources allocated by the v4l2
1877  * calls and ioctls
1878  */
1879 static int cx231xx_close(struct file *filp)
1880 {
1881         struct cx231xx_fh *fh = filp->private_data;
1882         struct cx231xx *dev = fh->dev;
1883
1884         cx231xx_videodbg("users=%d\n", dev->users);
1885
1886         cx231xx_videodbg("users=%d\n", dev->users);
1887         if (res_check(fh))
1888                 res_free(fh);
1889
1890         /*
1891          * To workaround error number=-71 on EP0 for VideoGrabber,
1892          *       need exclude following.
1893          * FIXME: It is probably safe to remove most of these, as we're
1894          * now avoiding the alternate setting for INDEX_VANC
1895          */
1896         if (!dev->board.no_alt_vanc)
1897                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1898                         videobuf_stop(&fh->vb_vidq);
1899                         videobuf_mmap_free(&fh->vb_vidq);
1900
1901                         /* the device is already disconnect,
1902                            free the remaining resources */
1903                         if (dev->state & DEV_DISCONNECTED) {
1904                                 if (atomic_read(&dev->devlist_count) > 0) {
1905                                         cx231xx_release_resources(dev);
1906                                         fh->dev = NULL;
1907                                         return 0;
1908                                 }
1909                                 return 0;
1910                         }
1911
1912                         /* do this before setting alternate! */
1913                         cx231xx_uninit_vbi_isoc(dev);
1914
1915                         /* set alternate 0 */
1916                         if (!dev->vbi_or_sliced_cc_mode)
1917                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1918                         else
1919                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1920
1921                         v4l2_fh_del(&fh->fh);
1922                         v4l2_fh_exit(&fh->fh);
1923                         kfree(fh);
1924                         dev->users--;
1925                         wake_up_interruptible(&dev->open);
1926                         return 0;
1927                 }
1928
1929         v4l2_fh_del(&fh->fh);
1930         dev->users--;
1931         if (!dev->users) {
1932                 videobuf_stop(&fh->vb_vidq);
1933                 videobuf_mmap_free(&fh->vb_vidq);
1934
1935                 /* the device is already disconnect,
1936                    free the remaining resources */
1937                 if (dev->state & DEV_DISCONNECTED) {
1938                         cx231xx_release_resources(dev);
1939                         fh->dev = NULL;
1940                         return 0;
1941                 }
1942
1943                 /* Save some power by putting tuner to sleep */
1944                 call_all(dev, tuner, standby);
1945
1946                 /* do this before setting alternate! */
1947                 if (dev->USE_ISO)
1948                         cx231xx_uninit_isoc(dev);
1949                 else
1950                         cx231xx_uninit_bulk(dev);
1951                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1952
1953                 /* set alternate 0 */
1954                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1955         }
1956         v4l2_fh_exit(&fh->fh);
1957         kfree(fh);
1958         wake_up_interruptible(&dev->open);
1959         return 0;
1960 }
1961
1962 static int cx231xx_v4l2_close(struct file *filp)
1963 {
1964         struct cx231xx_fh *fh = filp->private_data;
1965         struct cx231xx *dev = fh->dev;
1966         int rc;
1967
1968         mutex_lock(&dev->lock);
1969         rc = cx231xx_close(filp);
1970         mutex_unlock(&dev->lock);
1971         return rc;
1972 }
1973
1974 /*
1975  * cx231xx_v4l2_read()
1976  * will allocate buffers when called for the first time
1977  */
1978 static ssize_t
1979 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1980                   loff_t *pos)
1981 {
1982         struct cx231xx_fh *fh = filp->private_data;
1983         struct cx231xx *dev = fh->dev;
1984         int rc;
1985
1986         rc = check_dev(dev);
1987         if (rc < 0)
1988                 return rc;
1989
1990         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1991             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1992                 rc = res_get(fh);
1993
1994                 if (unlikely(rc < 0))
1995                         return rc;
1996
1997                 if (mutex_lock_interruptible(&dev->lock))
1998                         return -ERESTARTSYS;
1999                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2000                                             filp->f_flags & O_NONBLOCK);
2001                 mutex_unlock(&dev->lock);
2002                 return rc;
2003         }
2004         return 0;
2005 }
2006
2007 /*
2008  * cx231xx_v4l2_poll()
2009  * will allocate buffers when called for the first time
2010  */
2011 static __poll_t cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
2012 {
2013         __poll_t req_events = poll_requested_events(wait);
2014         struct cx231xx_fh *fh = filp->private_data;
2015         struct cx231xx *dev = fh->dev;
2016         __poll_t res = 0;
2017         int rc;
2018
2019         rc = check_dev(dev);
2020         if (rc < 0)
2021                 return EPOLLERR;
2022
2023         rc = res_get(fh);
2024
2025         if (unlikely(rc < 0))
2026                 return EPOLLERR;
2027
2028         if (v4l2_event_pending(&fh->fh))
2029                 res |= EPOLLPRI;
2030         else
2031                 poll_wait(filp, &fh->fh.wait, wait);
2032
2033         if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
2034                 return res;
2035
2036         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2037             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
2038                 mutex_lock(&dev->lock);
2039                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2040                 mutex_unlock(&dev->lock);
2041                 return res;
2042         }
2043         return res | EPOLLERR;
2044 }
2045
2046 /*
2047  * cx231xx_v4l2_mmap()
2048  */
2049 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2050 {
2051         struct cx231xx_fh *fh = filp->private_data;
2052         struct cx231xx *dev = fh->dev;
2053         int rc;
2054
2055         rc = check_dev(dev);
2056         if (rc < 0)
2057                 return rc;
2058
2059         rc = res_get(fh);
2060
2061         if (unlikely(rc < 0))
2062                 return rc;
2063
2064         if (mutex_lock_interruptible(&dev->lock))
2065                 return -ERESTARTSYS;
2066         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2067         mutex_unlock(&dev->lock);
2068
2069         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2070                          (unsigned long)vma->vm_start,
2071                          (unsigned long)vma->vm_end -
2072                          (unsigned long)vma->vm_start, rc);
2073
2074         return rc;
2075 }
2076
2077 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2078         .owner   = THIS_MODULE,
2079         .open    = cx231xx_v4l2_open,
2080         .release = cx231xx_v4l2_close,
2081         .read    = cx231xx_v4l2_read,
2082         .poll    = cx231xx_v4l2_poll,
2083         .mmap    = cx231xx_v4l2_mmap,
2084         .unlocked_ioctl   = video_ioctl2,
2085 };
2086
2087 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2088         .vidioc_querycap               = cx231xx_querycap,
2089         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2090         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2091         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2092         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2093         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2094         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2095         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
2096         .vidioc_cropcap                = vidioc_cropcap,
2097         .vidioc_reqbufs                = vidioc_reqbufs,
2098         .vidioc_querybuf               = vidioc_querybuf,
2099         .vidioc_qbuf                   = vidioc_qbuf,
2100         .vidioc_dqbuf                  = vidioc_dqbuf,
2101         .vidioc_s_std                  = vidioc_s_std,
2102         .vidioc_g_std                  = vidioc_g_std,
2103         .vidioc_enum_input             = cx231xx_enum_input,
2104         .vidioc_g_input                = cx231xx_g_input,
2105         .vidioc_s_input                = cx231xx_s_input,
2106         .vidioc_streamon               = vidioc_streamon,
2107         .vidioc_streamoff              = vidioc_streamoff,
2108         .vidioc_g_tuner                = cx231xx_g_tuner,
2109         .vidioc_s_tuner                = cx231xx_s_tuner,
2110         .vidioc_g_frequency            = cx231xx_g_frequency,
2111         .vidioc_s_frequency            = cx231xx_s_frequency,
2112 #ifdef CONFIG_VIDEO_ADV_DEBUG
2113         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2114         .vidioc_g_register             = cx231xx_g_register,
2115         .vidioc_s_register             = cx231xx_s_register,
2116 #endif
2117         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2118         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2119 };
2120
2121 static struct video_device cx231xx_vbi_template;
2122
2123 static const struct video_device cx231xx_video_template = {
2124         .fops         = &cx231xx_v4l_fops,
2125         .release      = video_device_release_empty,
2126         .ioctl_ops    = &video_ioctl_ops,
2127         .tvnorms      = V4L2_STD_ALL,
2128 };
2129
2130 static const struct v4l2_file_operations radio_fops = {
2131         .owner   = THIS_MODULE,
2132         .open   = cx231xx_v4l2_open,
2133         .release = cx231xx_v4l2_close,
2134         .poll = v4l2_ctrl_poll,
2135         .unlocked_ioctl = video_ioctl2,
2136 };
2137
2138 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2139         .vidioc_querycap    = cx231xx_querycap,
2140         .vidioc_g_tuner     = radio_g_tuner,
2141         .vidioc_s_tuner     = radio_s_tuner,
2142         .vidioc_g_frequency = cx231xx_g_frequency,
2143         .vidioc_s_frequency = cx231xx_s_frequency,
2144 #ifdef CONFIG_VIDEO_ADV_DEBUG
2145         .vidioc_g_chip_info = cx231xx_g_chip_info,
2146         .vidioc_g_register  = cx231xx_g_register,
2147         .vidioc_s_register  = cx231xx_s_register,
2148 #endif
2149         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2150         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2151 };
2152
2153 static struct video_device cx231xx_radio_template = {
2154         .name      = "cx231xx-radio",
2155         .fops      = &radio_fops,
2156         .ioctl_ops = &radio_ioctl_ops,
2157 };
2158
2159 /******************************** usb interface ******************************/
2160
2161 static void cx231xx_vdev_init(struct cx231xx *dev,
2162                 struct video_device *vfd,
2163                 const struct video_device *template,
2164                 const char *type_name)
2165 {
2166         *vfd = *template;
2167         vfd->v4l2_dev = &dev->v4l2_dev;
2168         vfd->release = video_device_release_empty;
2169         vfd->lock = &dev->lock;
2170
2171         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2172
2173         video_set_drvdata(vfd, dev);
2174         if (dev->tuner_type == TUNER_ABSENT) {
2175                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2176                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2177                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2178                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2179         }
2180 }
2181
2182 int cx231xx_register_analog_devices(struct cx231xx *dev)
2183 {
2184         int ret;
2185
2186         dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2187
2188         /* set default norm */
2189         dev->norm = V4L2_STD_PAL;
2190         dev->width = norm_maxw(dev);
2191         dev->height = norm_maxh(dev);
2192         dev->interlaced = 0;
2193
2194         /* Analog specific initialization */
2195         dev->format = &format[0];
2196
2197         /* Set the initial input */
2198         video_mux(dev, dev->video_input);
2199
2200         call_all(dev, video, s_std, dev->norm);
2201
2202         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2203         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2204
2205         if (dev->sd_cx25840) {
2206                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2207                                 dev->sd_cx25840->ctrl_handler, NULL);
2208                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2209                                 dev->sd_cx25840->ctrl_handler,
2210                                 v4l2_ctrl_radio_filter);
2211         }
2212
2213         if (dev->ctrl_handler.error)
2214                 return dev->ctrl_handler.error;
2215         if (dev->radio_ctrl_handler.error)
2216                 return dev->radio_ctrl_handler.error;
2217
2218         /* enable vbi capturing */
2219         /* write code here...  */
2220
2221         /* allocate and fill video video_device struct */
2222         cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2223 #if defined(CONFIG_MEDIA_CONTROLLER)
2224         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2225         ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
2226         if (ret < 0)
2227                 dev_err(dev->dev, "failed to initialize video media entity!\n");
2228 #endif
2229         dev->vdev.ctrl_handler = &dev->ctrl_handler;
2230         /* register v4l2 video video_device */
2231         ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2232                                     video_nr[dev->devno]);
2233         if (ret) {
2234                 dev_err(dev->dev,
2235                         "unable to register video device (error=%i).\n",
2236                         ret);
2237                 return ret;
2238         }
2239
2240         dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2241                 video_device_node_name(&dev->vdev));
2242
2243         /* Initialize VBI template */
2244         cx231xx_vbi_template = cx231xx_video_template;
2245         strscpy(cx231xx_vbi_template.name, "cx231xx-vbi",
2246                 sizeof(cx231xx_vbi_template.name));
2247
2248         /* Allocate and fill vbi video_device struct */
2249         cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2250
2251 #if defined(CONFIG_MEDIA_CONTROLLER)
2252         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2253         ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
2254         if (ret < 0)
2255                 dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2256 #endif
2257         dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2258         /* register v4l2 vbi video_device */
2259         ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2260                                     vbi_nr[dev->devno]);
2261         if (ret < 0) {
2262                 dev_err(dev->dev, "unable to register vbi device\n");
2263                 return ret;
2264         }
2265
2266         dev_info(dev->dev, "Registered VBI device %s\n",
2267                 video_device_node_name(&dev->vbi_dev));
2268
2269         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2270                 cx231xx_vdev_init(dev, &dev->radio_dev,
2271                                 &cx231xx_radio_template, "radio");
2272                 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2273                 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2274                                             radio_nr[dev->devno]);
2275                 if (ret < 0) {
2276                         dev_err(dev->dev,
2277                                 "can't register radio device\n");
2278                         return ret;
2279                 }
2280                 dev_info(dev->dev, "Registered radio device as %s\n",
2281                         video_device_node_name(&dev->radio_dev));
2282         }
2283
2284         return 0;
2285 }