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

   1 /*
   2    cx231xx-video.c - driver for Conexant Cx23100/101/102
   3                      USB video capture devices
   4
   5    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   6         Based on em28xx driver
   7         Based on cx23885 driver
   8         Based on cx88 driver
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include "cx231xx.h"
  26 #include <linux/init.h>
  27 #include <linux/list.h>
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/bitmap.h>
  31 #include <linux/i2c.h>
  32 #include <linux/mm.h>
  33 #include <linux/mutex.h>
  34 #include <linux/slab.h>
  35
  36 #include <media/v4l2-common.h>
  37 #include <media/v4l2-ioctl.h>
  38 #include <media/v4l2-event.h>
  39 #include <media/msp3400.h>
  40 #include <media/tuner.h>
  41
  42 #include "dvb_frontend.h"
  43
  44 #include "cx231xx-vbi.h"
  45
  46 #define CX231XX_VERSION "0.0.3"
  47
  48 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  49 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  50
  51 #define cx231xx_videodbg(fmt, arg...) do {\
  52         if (video_debug) \
  53                 printk(KERN_INFO "%s %s :"fmt, \
  54                          dev->name, __func__ , ##arg); } while (0)
  55
  56 static unsigned int isoc_debug;
  57 module_param(isoc_debug, int, 0644);
  58 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  59
  60 #define cx231xx_isocdbg(fmt, arg...) \
  61 do {\
  62         if (isoc_debug) { \
  63                 printk(KERN_INFO "%s %s :"fmt, \
  64                          dev->name, __func__ , ##arg); \
  65         } \
  66   } while (0)
  67
  68 MODULE_AUTHOR(DRIVER_AUTHOR);
  69 MODULE_DESCRIPTION(DRIVER_DESC);
  70 MODULE_LICENSE("GPL");
  71 MODULE_VERSION(CX231XX_VERSION);
  72
  73 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  74 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  75 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  76 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  77
  78 module_param_array(card, int, NULL, 0444);
  79 module_param_array(video_nr, int, NULL, 0444);
  80 module_param_array(vbi_nr, int, NULL, 0444);
  81 module_param_array(radio_nr, int, NULL, 0444);
  82
  83 MODULE_PARM_DESC(card, "card type");
  84 MODULE_PARM_DESC(video_nr, "video device numbers");
  85 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  86 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  87
  88 static unsigned int video_debug;
  89 module_param(video_debug, int, 0644);
  90 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  91
  92 /* supported video standards */
  93 static struct cx231xx_fmt format[] = {
  94         {
  95          .name = "16bpp YUY2, 4:2:2, packed",
  96          .fourcc = V4L2_PIX_FMT_YUYV,
  97          .depth = 16,
  98          .reg = 0,
  99          },
 100 };
 101
 102
 103 static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
 104 {
 105 #ifdef CONFIG_MEDIA_CONTROLLER
 106         struct media_device *mdev = dev->media_dev;
 107         struct media_entity  *entity, *decoder = NULL, *source;
 108         struct media_link *link, *found_link = NULL;
 109         int i, ret, active_links = 0;
 110
 111         if (!mdev)
 112                 return 0;
 113
 114         /*
 115          * This will find the tuner that is connected into the decoder.
 116          * Technically, this is not 100% correct, as the device may be
 117          * using an analog input instead of the tuner. However, as we can't
 118          * do DVB streaming while the DMA engine is being used for V4L2,
 119          * this should be enough for the actual needs.
 120          */
 121         media_device_for_each_entity(entity, mdev) {
 122                 if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) {
 123                         decoder = entity;
 124                         break;
 125                 }
 126         }
 127         if (!decoder)
 128                 return 0;
 129
 130         for (i = 0; i < decoder->num_links; i++) {
 131                 link = &decoder->links[i];
 132                 if (link->sink->entity == decoder) {
 133                         found_link = link;
 134                         if (link->flags & MEDIA_LNK_FL_ENABLED)
 135                                 active_links++;
 136                         break;
 137                 }
 138         }
 139
 140         if (active_links == 1 || !found_link)
 141                 return 0;
 142
 143         source = found_link->source->entity;
 144         for (i = 0; i < source->num_links; i++) {
 145                 struct media_entity *sink;
 146                 int flags = 0;
 147
 148                 link = &source->links[i];
 149                 sink = link->sink->entity;
 150
 151                 if (sink == entity)
 152                         flags = MEDIA_LNK_FL_ENABLED;
 153
 154                 ret = media_entity_setup_link(link, flags);
 155                 if (ret) {
 156                         dev_err(dev->dev,
 157                                 "Couldn't change link %s->%s to %s. Error %d\n",
 158                                 source->name, sink->name,
 159                                 flags ? "enabled" : "disabled",
 160                                 ret);
 161                         return ret;
 162                 } else
 163                         dev_dbg(dev->dev,
 164                                 "link %s->%s was %s\n",
 165                                 source->name, sink->name,
 166                                 flags ? "ENABLED" : "disabled");
 167         }
 168 #endif
 169         return 0;
 170 }
 171
 172 /* ------------------------------------------------------------------
 173         Video buffer and parser functions
 174    ------------------------------------------------------------------*/
 175
 176 /*
 177  * Announces that a buffer were filled and request the next
 178  */
 179 static inline void buffer_filled(struct cx231xx *dev,
 180                                  struct cx231xx_dmaqueue *dma_q,
 181                                  struct cx231xx_buffer *buf)
 182 {
 183         /* Advice that buffer was filled */
 184         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 185         buf->vb.state = VIDEOBUF_DONE;
 186         buf->vb.field_count++;
 187         v4l2_get_timestamp(&buf->vb.ts);
 188
 189         if (dev->USE_ISO)
 190                 dev->video_mode.isoc_ctl.buf = NULL;
 191         else
 192                 dev->video_mode.bulk_ctl.buf = NULL;
 193
 194         list_del(&buf->vb.queue);
 195         wake_up(&buf->vb.done);
 196 }
 197
 198 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 199 {
 200         char *errmsg = "Unknown";
 201
 202         switch (status) {
 203         case -ENOENT:
 204                 errmsg = "unlinked synchronuously";
 205                 break;
 206         case -ECONNRESET:
 207                 errmsg = "unlinked asynchronuously";
 208                 break;
 209         case -ENOSR:
 210                 errmsg = "Buffer error (overrun)";
 211                 break;
 212         case -EPIPE:
 213                 errmsg = "Stalled (device not responding)";
 214                 break;
 215         case -EOVERFLOW:
 216                 errmsg = "Babble (bad cable?)";
 217                 break;
 218         case -EPROTO:
 219                 errmsg = "Bit-stuff error (bad cable?)";
 220                 break;
 221         case -EILSEQ:
 222                 errmsg = "CRC/Timeout (could be anything)";
 223                 break;
 224         case -ETIME:
 225                 errmsg = "Device does not respond";
 226                 break;
 227         }
 228         if (packet < 0) {
 229                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 230         } else {
 231                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 232                                 packet, status, errmsg);
 233         }
 234 }
 235
 236 /*
 237  * video-buf generic routine to get the next available buffer
 238  */
 239 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 240                                 struct cx231xx_buffer **buf)
 241 {
 242         struct cx231xx_video_mode *vmode =
 243             container_of(dma_q, struct cx231xx_video_mode, vidq);
 244         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 245
 246         char *outp;
 247
 248         if (list_empty(&dma_q->active)) {
 249                 cx231xx_isocdbg("No active queue to serve\n");
 250                 if (dev->USE_ISO)
 251                         dev->video_mode.isoc_ctl.buf = NULL;
 252                 else
 253                         dev->video_mode.bulk_ctl.buf = NULL;
 254                 *buf = NULL;
 255                 return;
 256         }
 257
 258         /* Get the next buffer */
 259         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 260
 261         /* Cleans up buffer - Useful for testing for frame/URB loss */
 262         outp = videobuf_to_vmalloc(&(*buf)->vb);
 263         memset(outp, 0, (*buf)->vb.size);
 264
 265         if (dev->USE_ISO)
 266                 dev->video_mode.isoc_ctl.buf = *buf;
 267         else
 268                 dev->video_mode.bulk_ctl.buf = *buf;
 269
 270         return;
 271 }
 272
 273 /*
 274  * Controls the isoc copy of each urb packet
 275  */
 276 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 277 {
 278         struct cx231xx_dmaqueue *dma_q = urb->context;
 279         int i;
 280         unsigned char *p_buffer;
 281         u32 bytes_parsed = 0, buffer_size = 0;
 282         u8 sav_eav = 0;
 283
 284         if (!dev)
 285                 return 0;
 286
 287         if (dev->state & DEV_DISCONNECTED)
 288                 return 0;
 289
 290         if (urb->status < 0) {
 291                 print_err_status(dev, -1, urb->status);
 292                 if (urb->status == -ENOENT)
 293                         return 0;
 294         }
 295
 296         for (i = 0; i < urb->number_of_packets; i++) {
 297                 int status = urb->iso_frame_desc[i].status;
 298
 299                 if (status < 0) {
 300                         print_err_status(dev, i, status);
 301                         if (urb->iso_frame_desc[i].status != -EPROTO)
 302                                 continue;
 303                 }
 304
 305                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 306                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 307                         continue;
 308                 }
 309                 if (urb->iso_frame_desc[i].actual_length >
 310                     dev->video_mode.max_pkt_size) {
 311                         cx231xx_isocdbg("packet bigger than packet size");
 312                         continue;
 313                 }
 314
 315                 /*  get buffer pointer and length */
 316                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 317                 buffer_size = urb->iso_frame_desc[i].actual_length;
 318                 bytes_parsed = 0;
 319
 320                 if (dma_q->is_partial_line) {
 321                         /* Handle the case of a partial line */
 322                         sav_eav = dma_q->last_sav;
 323                 } else {
 324                         /* Check for a SAV/EAV overlapping
 325                                 the buffer boundary */
 326                         sav_eav =
 327                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 328                                                           dma_q->partial_buf,
 329                                                           &bytes_parsed);
 330                 }
 331
 332                 sav_eav &= 0xF0;
 333                 /* Get the first line if we have some portion of an SAV/EAV from
 334                    the last buffer or a partial line  */
 335                 if (sav_eav) {
 336                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 337                                 sav_eav,        /* SAV/EAV */
 338                                 p_buffer + bytes_parsed,        /* p_buffer */
 339                                 buffer_size - bytes_parsed);/* buf size */
 340                 }
 341
 342                 /* Now parse data that is completely in this buffer */
 343                 /* dma_q->is_partial_line = 0;  */
 344
 345                 while (bytes_parsed < buffer_size) {
 346                         u32 bytes_used = 0;
 347
 348                         sav_eav = cx231xx_find_next_SAV_EAV(
 349                                 p_buffer + bytes_parsed,        /* p_buffer */
 350                                 buffer_size - bytes_parsed,     /* buf size */
 351                                 &bytes_used);/* bytes used to get SAV/EAV */
 352
 353                         bytes_parsed += bytes_used;
 354
 355                         sav_eav &= 0xF0;
 356                         if (sav_eav && (bytes_parsed < buffer_size)) {
 357                                 bytes_parsed += cx231xx_get_video_line(dev,
 358                                         dma_q, sav_eav, /* SAV/EAV */
 359                                         p_buffer + bytes_parsed,/* p_buffer */
 360                                         buffer_size - bytes_parsed);/*buf size*/
 361                         }
 362                 }
 363
 364                 /* Save the last four bytes of the buffer so we can check the
 365                    buffer boundary condition next time */
 366                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 367                 bytes_parsed = 0;
 368
 369         }
 370         return 1;
 371 }
 372
 373 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 374 {
 375         struct cx231xx_dmaqueue *dma_q = urb->context;
 376         unsigned char *p_buffer;
 377         u32 bytes_parsed = 0, buffer_size = 0;
 378         u8 sav_eav = 0;
 379
 380         if (!dev)
 381                 return 0;
 382
 383         if (dev->state & DEV_DISCONNECTED)
 384                 return 0;
 385
 386         if (urb->status < 0) {
 387                 print_err_status(dev, -1, urb->status);
 388                 if (urb->status == -ENOENT)
 389                         return 0;
 390         }
 391
 392         if (1) {
 393
 394                 /*  get buffer pointer and length */
 395                 p_buffer = urb->transfer_buffer;
 396                 buffer_size = urb->actual_length;
 397                 bytes_parsed = 0;
 398
 399                 if (dma_q->is_partial_line) {
 400                         /* Handle the case of a partial line */
 401                         sav_eav = dma_q->last_sav;
 402                 } else {
 403                         /* Check for a SAV/EAV overlapping
 404                                 the buffer boundary */
 405                         sav_eav =
 406                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 407                                                           dma_q->partial_buf,
 408                                                           &bytes_parsed);
 409                 }
 410
 411                 sav_eav &= 0xF0;
 412                 /* Get the first line if we have some portion of an SAV/EAV from
 413                    the last buffer or a partial line  */
 414                 if (sav_eav) {
 415                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 416                                 sav_eav,        /* SAV/EAV */
 417                                 p_buffer + bytes_parsed,        /* p_buffer */
 418                                 buffer_size - bytes_parsed);/* buf size */
 419                 }
 420
 421                 /* Now parse data that is completely in this buffer */
 422                 /* dma_q->is_partial_line = 0;  */
 423
 424                 while (bytes_parsed < buffer_size) {
 425                         u32 bytes_used = 0;
 426
 427                         sav_eav = cx231xx_find_next_SAV_EAV(
 428                                 p_buffer + bytes_parsed,        /* p_buffer */
 429                                 buffer_size - bytes_parsed,     /* buf size */
 430                                 &bytes_used);/* bytes used to get SAV/EAV */
 431
 432                         bytes_parsed += bytes_used;
 433
 434                         sav_eav &= 0xF0;
 435                         if (sav_eav && (bytes_parsed < buffer_size)) {
 436                                 bytes_parsed += cx231xx_get_video_line(dev,
 437                                         dma_q, sav_eav, /* SAV/EAV */
 438                                         p_buffer + bytes_parsed,/* p_buffer */
 439                                         buffer_size - bytes_parsed);/*buf size*/
 440                         }
 441                 }
 442
 443                 /* Save the last four bytes of the buffer so we can check the
 444                    buffer boundary condition next time */
 445                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 446                 bytes_parsed = 0;
 447
 448         }
 449         return 1;
 450 }
 451
 452
 453 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 454                                  u32 *p_bytes_used)
 455 {
 456         u32 bytes_used;
 457         u8 boundary_bytes[8];
 458         u8 sav_eav = 0;
 459
 460         *p_bytes_used = 0;
 461
 462         /* Create an array of the last 4 bytes of the last buffer and the first
 463            4 bytes of the current buffer. */
 464
 465         memcpy(boundary_bytes, partial_buf, 4);
 466         memcpy(boundary_bytes + 4, p_buffer, 4);
 467
 468         /* Check for the SAV/EAV in the boundary buffer */
 469         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 470                                             &bytes_used);
 471
 472         if (sav_eav) {
 473                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 474                    only those used in the new buffer */
 475                 *p_bytes_used = bytes_used - 4;
 476         }
 477
 478         return sav_eav;
 479 }
 480
 481 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 482 {
 483         u32 i;
 484         u8 sav_eav = 0;
 485
 486         /*
 487          * Don't search if the buffer size is less than 4.  It causes a page
 488          * fault since buffer_size - 4 evaluates to a large number in that
 489          * case.
 490          */
 491         if (buffer_size < 4) {
 492                 *p_bytes_used = buffer_size;
 493                 return 0;
 494         }
 495
 496         for (i = 0; i < (buffer_size - 3); i++) {
 497
 498                 if ((p_buffer[i] == 0xFF) &&
 499                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 500
 501                         *p_bytes_used = i + 4;
 502                         sav_eav = p_buffer[i + 3];
 503                         return sav_eav;
 504                 }
 505         }
 506
 507         *p_bytes_used = buffer_size;
 508         return 0;
 509 }
 510
 511 u32 cx231xx_get_video_line(struct cx231xx *dev,
 512                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 513                            u8 *p_buffer, u32 buffer_size)
 514 {
 515         u32 bytes_copied = 0;
 516         int current_field = -1;
 517
 518         switch (sav_eav) {
 519         case SAV_ACTIVE_VIDEO_FIELD1:
 520                 /* looking for skipped line which occurred in PAL 720x480 mode.
 521                    In this case, there will be no active data contained
 522                    between the SAV and EAV */
 523                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 524                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 525                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 526                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 527                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 528                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 529                         return bytes_copied;
 530                 current_field = 1;
 531                 break;
 532
 533         case SAV_ACTIVE_VIDEO_FIELD2:
 534                 /* looking for skipped line which occurred in PAL 720x480 mode.
 535                    In this case, there will be no active data contained between
 536                    the SAV and EAV */
 537                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 538                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 539                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 540                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 541                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 542                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 543                         return bytes_copied;
 544                 current_field = 2;
 545                 break;
 546         }
 547
 548         dma_q->last_sav = sav_eav;
 549
 550         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 551                                                buffer_size, current_field);
 552
 553         return bytes_copied;
 554 }
 555
 556 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 557                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 558                             u32 length, int field_number)
 559 {
 560         u32 bytes_to_copy;
 561         struct cx231xx_buffer *buf;
 562         u32 _line_size = dev->width * 2;
 563
 564         if (dma_q->current_field != field_number)
 565                 cx231xx_reset_video_buffer(dev, dma_q);
 566
 567         /* get the buffer pointer */
 568         if (dev->USE_ISO)
 569                 buf = dev->video_mode.isoc_ctl.buf;
 570         else
 571                 buf = dev->video_mode.bulk_ctl.buf;
 572
 573         /* Remember the field number for next time */
 574         dma_q->current_field = field_number;
 575
 576         bytes_to_copy = dma_q->bytes_left_in_line;
 577         if (bytes_to_copy > length)
 578                 bytes_to_copy = length;
 579
 580         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 581                 dma_q->bytes_left_in_line -= bytes_to_copy;
 582                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 583                                           0 : 1;
 584                 return 0;
 585         }
 586
 587         dma_q->is_partial_line = 1;
 588
 589         /* If we don't have a buffer, just return the number of bytes we would
 590            have copied if we had a buffer. */
 591         if (!buf) {
 592                 dma_q->bytes_left_in_line -= bytes_to_copy;
 593                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 594                                          ? 0 : 1;
 595                 return bytes_to_copy;
 596         }
 597
 598         /* copy the data to video buffer */
 599         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 600
 601         dma_q->pos += bytes_to_copy;
 602         dma_q->bytes_left_in_line -= bytes_to_copy;
 603
 604         if (dma_q->bytes_left_in_line == 0) {
 605                 dma_q->bytes_left_in_line = _line_size;
 606                 dma_q->lines_completed++;
 607                 dma_q->is_partial_line = 0;
 608
 609                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 610                         buffer_filled(dev, dma_q, buf);
 611
 612                         dma_q->pos = 0;
 613                         buf = NULL;
 614                         dma_q->lines_completed = 0;
 615                 }
 616         }
 617
 618         return bytes_to_copy;
 619 }
 620
 621 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 622                                 struct cx231xx_dmaqueue *dma_q)
 623 {
 624         struct cx231xx_buffer *buf;
 625
 626         /* handle the switch from field 1 to field 2 */
 627         if (dma_q->current_field == 1) {
 628                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 629                         dma_q->field1_done = 1;
 630                 else
 631                         dma_q->field1_done = 0;
 632         }
 633
 634         if (dev->USE_ISO)
 635                 buf = dev->video_mode.isoc_ctl.buf;
 636         else
 637                 buf = dev->video_mode.bulk_ctl.buf;
 638
 639         if (buf == NULL) {
 640                 /* first try to get the buffer */
 641                 get_next_buf(dma_q, &buf);
 642
 643                 dma_q->pos = 0;
 644                 dma_q->field1_done = 0;
 645                 dma_q->current_field = -1;
 646         }
 647
 648         /* reset the counters */
 649         dma_q->bytes_left_in_line = dev->width << 1;
 650         dma_q->lines_completed = 0;
 651 }
 652
 653 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 654                     u8 *p_buffer, u32 bytes_to_copy)
 655 {
 656         u8 *p_out_buffer = NULL;
 657         u32 current_line_bytes_copied = 0;
 658         struct cx231xx_buffer *buf;
 659         u32 _line_size = dev->width << 1;
 660         void *startwrite;
 661         int offset, lencopy;
 662
 663         if (dev->USE_ISO)
 664                 buf = dev->video_mode.isoc_ctl.buf;
 665         else
 666                 buf = dev->video_mode.bulk_ctl.buf;
 667
 668         if (buf == NULL)
 669                 return -1;
 670
 671         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 672
 673         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 674
 675         /* Offset field 2 one line from the top of the buffer */
 676         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 677
 678         /* Offset for field 2 */
 679         startwrite = p_out_buffer + offset;
 680
 681         /* lines already completed in the current field */
 682         startwrite += (dma_q->lines_completed * _line_size * 2);
 683
 684         /* bytes already completed in the current line */
 685         startwrite += current_line_bytes_copied;
 686
 687         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 688                   bytes_to_copy : dma_q->bytes_left_in_line;
 689
 690         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 691                 return 0;
 692
 693         /* The below copies the UYVY data straight into video buffer */
 694         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 695
 696         return 0;
 697 }
 698
 699 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 700 {
 701         u16 i;
 702
 703         if (len <= 0)
 704                 return;
 705
 706         for (i = 0; i < len / 2; i++)
 707                 to[i] = (from[i] << 8) | (from[i] >> 8);
 708 }
 709
 710 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 711 {
 712         u8 buffer_complete = 0;
 713
 714         /* Dual field stream */
 715         buffer_complete = ((dma_q->current_field == 2) &&
 716                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 717                             dma_q->field1_done);
 718
 719         return buffer_complete;
 720 }
 721
 722 /* ------------------------------------------------------------------
 723         Videobuf operations
 724    ------------------------------------------------------------------*/
 725
 726 static int
 727 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 728 {
 729         struct cx231xx_fh *fh = vq->priv_data;
 730         struct cx231xx *dev = fh->dev;
 731
 732         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 733         if (0 == *count)
 734                 *count = CX231XX_DEF_BUF;
 735
 736         if (*count < CX231XX_MIN_BUF)
 737                 *count = CX231XX_MIN_BUF;
 738
 739
 740         cx231xx_enable_analog_tuner(dev);
 741
 742         return 0;
 743 }
 744
 745 /* This is called *without* dev->slock held; please keep it that way */
 746 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 747 {
 748         struct cx231xx_fh *fh = vq->priv_data;
 749         struct cx231xx *dev = fh->dev;
 750         unsigned long flags = 0;
 751
 752         BUG_ON(in_interrupt());
 753
 754         /* We used to wait for the buffer to finish here, but this didn't work
 755            because, as we were keeping the state as VIDEOBUF_QUEUED,
 756            videobuf_queue_cancel marked it as finished for us.
 757            (Also, it could wedge forever if the hardware was misconfigured.)
 758
 759            This should be safe; by the time we get here, the buffer isn't
 760            queued anymore. If we ever start marking the buffers as
 761            VIDEOBUF_ACTIVE, it won't be, though.
 762          */
 763         spin_lock_irqsave(&dev->video_mode.slock, flags);
 764         if (dev->USE_ISO) {
 765                 if (dev->video_mode.isoc_ctl.buf == buf)
 766                         dev->video_mode.isoc_ctl.buf = NULL;
 767         } else {
 768                 if (dev->video_mode.bulk_ctl.buf == buf)
 769                         dev->video_mode.bulk_ctl.buf = NULL;
 770         }
 771         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 772
 773         videobuf_vmalloc_free(&buf->vb);
 774         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 775 }
 776
 777 static int
 778 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 779                enum v4l2_field field)
 780 {
 781         struct cx231xx_fh *fh = vq->priv_data;
 782         struct cx231xx_buffer *buf =
 783             container_of(vb, struct cx231xx_buffer, vb);
 784         struct cx231xx *dev = fh->dev;
 785         int rc = 0, urb_init = 0;
 786
 787         /* The only currently supported format is 16 bits/pixel */
 788         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 789                         + 7) >> 3;
 790         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 791                 return -EINVAL;
 792
 793         buf->vb.width = dev->width;
 794         buf->vb.height = dev->height;
 795         buf->vb.field = field;
 796
 797         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 798                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 799                 if (rc < 0)
 800                         goto fail;
 801         }
 802
 803         if (dev->USE_ISO) {
 804                 if (!dev->video_mode.isoc_ctl.num_bufs)
 805                         urb_init = 1;
 806         } else {
 807                 if (!dev->video_mode.bulk_ctl.num_bufs)
 808                         urb_init = 1;
 809         }
 810         dev_dbg(dev->dev,
 811                 "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 812                 urb_init, dev->video_mode.max_pkt_size);
 813         if (urb_init) {
 814                 dev->mode_tv = 0;
 815                 if (dev->USE_ISO)
 816                         rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 817                                        CX231XX_NUM_BUFS,
 818                                        dev->video_mode.max_pkt_size,
 819                                        cx231xx_isoc_copy);
 820                 else
 821                         rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 822                                        CX231XX_NUM_BUFS,
 823                                        dev->video_mode.max_pkt_size,
 824                                        cx231xx_bulk_copy);
 825                 if (rc < 0)
 826                         goto fail;
 827         }
 828
 829         buf->vb.state = VIDEOBUF_PREPARED;
 830
 831         return 0;
 832
 833 fail:
 834         free_buffer(vq, buf);
 835         return rc;
 836 }
 837
 838 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 839 {
 840         struct cx231xx_buffer *buf =
 841             container_of(vb, struct cx231xx_buffer, vb);
 842         struct cx231xx_fh *fh = vq->priv_data;
 843         struct cx231xx *dev = fh->dev;
 844         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 845
 846         buf->vb.state = VIDEOBUF_QUEUED;
 847         list_add_tail(&buf->vb.queue, &vidq->active);
 848
 849 }
 850
 851 static void buffer_release(struct videobuf_queue *vq,
 852                            struct videobuf_buffer *vb)
 853 {
 854         struct cx231xx_buffer *buf =
 855             container_of(vb, struct cx231xx_buffer, vb);
 856         struct cx231xx_fh *fh = vq->priv_data;
 857         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 858
 859         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 860
 861         free_buffer(vq, buf);
 862 }
 863
 864 static struct videobuf_queue_ops cx231xx_video_qops = {
 865         .buf_setup = buffer_setup,
 866         .buf_prepare = buffer_prepare,
 867         .buf_queue = buffer_queue,
 868         .buf_release = buffer_release,
 869 };
 870
 871 /*********************  v4l2 interface  **************************************/
 872
 873 void video_mux(struct cx231xx *dev, int index)
 874 {
 875         dev->video_input = index;
 876         dev->ctl_ainput = INPUT(index)->amux;
 877
 878         cx231xx_set_video_input_mux(dev, index);
 879
 880         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 881
 882         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 883
 884         dev_dbg(dev->dev, "video_mux : %d\n", index);
 885
 886         /* do mode control overrides if required */
 887         cx231xx_do_mode_ctrl_overrides(dev);
 888 }
 889
 890 /* Usage lock check functions */
 891 static int res_get(struct cx231xx_fh *fh)
 892 {
 893         struct cx231xx *dev = fh->dev;
 894         int rc = 0;
 895
 896         /* This instance already has stream_on */
 897         if (fh->stream_on)
 898                 return rc;
 899
 900         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 901                 if (dev->stream_on)
 902                         return -EBUSY;
 903                 dev->stream_on = 1;
 904         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 905                 if (dev->vbi_stream_on)
 906                         return -EBUSY;
 907                 dev->vbi_stream_on = 1;
 908         } else
 909                 return -EINVAL;
 910
 911         fh->stream_on = 1;
 912
 913         return rc;
 914 }
 915
 916 static int res_check(struct cx231xx_fh *fh)
 917 {
 918         return fh->stream_on;
 919 }
 920
 921 static void res_free(struct cx231xx_fh *fh)
 922 {
 923         struct cx231xx *dev = fh->dev;
 924
 925         fh->stream_on = 0;
 926
 927         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 928                 dev->stream_on = 0;
 929         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 930                 dev->vbi_stream_on = 0;
 931 }
 932
 933 static int check_dev(struct cx231xx *dev)
 934 {
 935         if (dev->state & DEV_DISCONNECTED) {
 936                 dev_err(dev->dev, "v4l2 ioctl: device not present\n");
 937                 return -ENODEV;
 938         }
 939         return 0;
 940 }
 941
 942 /* ------------------------------------------------------------------
 943         IOCTL vidioc handling
 944    ------------------------------------------------------------------*/
 945
 946 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 947                                 struct v4l2_format *f)
 948 {
 949         struct cx231xx_fh *fh = priv;
 950         struct cx231xx *dev = fh->dev;
 951
 952         f->fmt.pix.width = dev->width;
 953         f->fmt.pix.height = dev->height;
 954         f->fmt.pix.pixelformat = dev->format->fourcc;
 955         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 956         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 957         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 958
 959         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 960
 961         return 0;
 962 }
 963
 964 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 965 {
 966         unsigned int i;
 967
 968         for (i = 0; i < ARRAY_SIZE(format); i++)
 969                 if (format[i].fourcc == fourcc)
 970                         return &format[i];
 971
 972         return NULL;
 973 }
 974
 975 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 976                                   struct v4l2_format *f)
 977 {
 978         struct cx231xx_fh *fh = priv;
 979         struct cx231xx *dev = fh->dev;
 980         unsigned int width = f->fmt.pix.width;
 981         unsigned int height = f->fmt.pix.height;
 982         unsigned int maxw = norm_maxw(dev);
 983         unsigned int maxh = norm_maxh(dev);
 984         struct cx231xx_fmt *fmt;
 985
 986         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 987         if (!fmt) {
 988                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 989                                  f->fmt.pix.pixelformat);
 990                 return -EINVAL;
 991         }
 992
 993         /* width must even because of the YUYV format
 994            height must be even because of interlacing */
 995         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 996
 997         f->fmt.pix.width = width;
 998         f->fmt.pix.height = height;
 999         f->fmt.pix.pixelformat = fmt->fourcc;
1000         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
1001         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
1002         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1003         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1004
1005         return 0;
1006 }
1007
1008 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1009                                 struct v4l2_format *f)
1010 {
1011         struct cx231xx_fh *fh = priv;
1012         struct cx231xx *dev = fh->dev;
1013         int rc;
1014         struct cx231xx_fmt *fmt;
1015         struct v4l2_subdev_format format = {
1016                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1017         };
1018
1019         rc = check_dev(dev);
1020         if (rc < 0)
1021                 return rc;
1022
1023         vidioc_try_fmt_vid_cap(file, priv, f);
1024
1025         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1026         if (!fmt)
1027                 return -EINVAL;
1028
1029         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1030                 dev_err(dev->dev, "%s: queue busy\n", __func__);
1031                 return -EBUSY;
1032         }
1033
1034         if (dev->stream_on && !fh->stream_on) {
1035                 dev_err(dev->dev,
1036                         "%s: device in use by another fh\n", __func__);
1037                 return -EBUSY;
1038         }
1039
1040         /* set new image size */
1041         dev->width = f->fmt.pix.width;
1042         dev->height = f->fmt.pix.height;
1043         dev->format = fmt;
1044
1045         v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
1046         call_all(dev, pad, set_fmt, NULL, &format);
1047         v4l2_fill_pix_format(&f->fmt.pix, &format.format);
1048
1049         return rc;
1050 }
1051
1052 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
1053 {
1054         struct cx231xx_fh *fh = priv;
1055         struct cx231xx *dev = fh->dev;
1056
1057         *id = dev->norm;
1058         return 0;
1059 }
1060
1061 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1062 {
1063         struct cx231xx_fh *fh = priv;
1064         struct cx231xx *dev = fh->dev;
1065         struct v4l2_subdev_format format = {
1066                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1067         };
1068         int rc;
1069
1070         rc = check_dev(dev);
1071         if (rc < 0)
1072                 return rc;
1073
1074         if (dev->norm == norm)
1075                 return 0;
1076
1077         if (videobuf_queue_is_busy(&fh->vb_vidq))
1078                 return -EBUSY;
1079
1080         dev->norm = norm;
1081
1082         /* Adjusts width/height, if needed */
1083         dev->width = 720;
1084         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1085
1086         call_all(dev, video, s_std, dev->norm);
1087
1088         /* We need to reset basic properties in the decoder related to
1089            resolution (since a standard change effects things like the number
1090            of lines in VACT, etc) */
1091         format.format.code = MEDIA_BUS_FMT_FIXED;
1092         format.format.width = dev->width;
1093         format.format.height = dev->height;
1094         call_all(dev, pad, set_fmt, NULL, &format);
1095
1096         /* do mode control overrides */
1097         cx231xx_do_mode_ctrl_overrides(dev);
1098
1099         return 0;
1100 }
1101
1102 static const char *iname[] = {
1103         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1104         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1105         [CX231XX_VMUX_TELEVISION] = "Television",
1106         [CX231XX_VMUX_CABLE]      = "Cable TV",
1107         [CX231XX_VMUX_DVB]        = "DVB",
1108         [CX231XX_VMUX_DEBUG]      = "for debug only",
1109 };
1110
1111 int cx231xx_enum_input(struct file *file, void *priv,
1112                              struct v4l2_input *i)
1113 {
1114         struct cx231xx_fh *fh = priv;
1115         struct cx231xx *dev = fh->dev;
1116         u32 gen_stat;
1117         unsigned int n;
1118         int ret;
1119
1120         n = i->index;
1121         if (n >= MAX_CX231XX_INPUT)
1122                 return -EINVAL;
1123         if (0 == INPUT(n)->type)
1124                 return -EINVAL;
1125
1126         i->index = n;
1127         i->type = V4L2_INPUT_TYPE_CAMERA;
1128
1129         strcpy(i->name, iname[INPUT(n)->type]);
1130
1131         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1132             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1133                 i->type = V4L2_INPUT_TYPE_TUNER;
1134
1135         i->std = dev->vdev.tvnorms;
1136
1137         /* If they are asking about the active input, read signal status */
1138         if (n == dev->video_input) {
1139                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1140                                             GEN_STAT, 2, &gen_stat, 4);
1141                 if (ret > 0) {
1142                         if ((gen_stat & FLD_VPRES) == 0x00)
1143                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1144                         if ((gen_stat & FLD_HLOCK) == 0x00)
1145                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1146                 }
1147         }
1148
1149         return 0;
1150 }
1151
1152 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1153 {
1154         struct cx231xx_fh *fh = priv;
1155         struct cx231xx *dev = fh->dev;
1156
1157         *i = dev->video_input;
1158
1159         return 0;
1160 }
1161
1162 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1163 {
1164         struct cx231xx_fh *fh = priv;
1165         struct cx231xx *dev = fh->dev;
1166         int rc;
1167
1168         dev->mode_tv = 0;
1169         rc = check_dev(dev);
1170         if (rc < 0)
1171                 return rc;
1172
1173         if (i >= MAX_CX231XX_INPUT)
1174                 return -EINVAL;
1175         if (0 == INPUT(i)->type)
1176                 return -EINVAL;
1177
1178         video_mux(dev, i);
1179
1180         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1181             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1182                 /* There's a tuner, so reset the standard and put it on the
1183                    last known frequency (since it was probably powered down
1184                    until now */
1185                 call_all(dev, video, s_std, dev->norm);
1186         }
1187
1188         return 0;
1189 }
1190
1191 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1192 {
1193         struct cx231xx_fh *fh = priv;
1194         struct cx231xx *dev = fh->dev;
1195         int rc;
1196
1197         rc = check_dev(dev);
1198         if (rc < 0)
1199                 return rc;
1200
1201         if (0 != t->index)
1202                 return -EINVAL;
1203
1204         strcpy(t->name, "Tuner");
1205
1206         t->type = V4L2_TUNER_ANALOG_TV;
1207         t->capability = V4L2_TUNER_CAP_NORM;
1208         t->rangehigh = 0xffffffffUL;
1209         t->signal = 0xffff;     /* LOCKED */
1210         call_all(dev, tuner, g_tuner, t);
1211
1212         return 0;
1213 }
1214
1215 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1216 {
1217         struct cx231xx_fh *fh = priv;
1218         struct cx231xx *dev = fh->dev;
1219         int rc;
1220
1221         rc = check_dev(dev);
1222         if (rc < 0)
1223                 return rc;
1224
1225         if (0 != t->index)
1226                 return -EINVAL;
1227 #if 0
1228         call_all(dev, tuner, s_tuner, t);
1229 #endif
1230         return 0;
1231 }
1232
1233 int cx231xx_g_frequency(struct file *file, void *priv,
1234                               struct v4l2_frequency *f)
1235 {
1236         struct cx231xx_fh *fh = priv;
1237         struct cx231xx *dev = fh->dev;
1238
1239         if (f->tuner)
1240                 return -EINVAL;
1241
1242         f->frequency = dev->ctl_freq;
1243
1244         return 0;
1245 }
1246
1247 int cx231xx_s_frequency(struct file *file, void *priv,
1248                               const struct v4l2_frequency *f)
1249 {
1250         struct cx231xx_fh *fh = priv;
1251         struct cx231xx *dev = fh->dev;
1252         struct v4l2_frequency new_freq = *f;
1253         int rc;
1254         u32 if_frequency = 5400000;
1255
1256         dev_dbg(dev->dev,
1257                 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1258                 f->frequency, f->type);
1259
1260         rc = check_dev(dev);
1261         if (rc < 0)
1262                 return rc;
1263
1264         if (0 != f->tuner)
1265                 return -EINVAL;
1266
1267         /* set pre channel change settings in DIF first */
1268         rc = cx231xx_tuner_pre_channel_change(dev);
1269
1270         call_all(dev, tuner, s_frequency, f);
1271         call_all(dev, tuner, g_frequency, &new_freq);
1272         dev->ctl_freq = new_freq.frequency;
1273
1274         /* set post channel change settings in DIF first */
1275         rc = cx231xx_tuner_post_channel_change(dev);
1276
1277         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1278                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1279                         if_frequency = 5400000;  /*5.4MHz       */
1280                 else if (dev->norm & V4L2_STD_B)
1281                         if_frequency = 6000000;  /*6.0MHz       */
1282                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1283                         if_frequency = 6900000;  /*6.9MHz       */
1284                 else if (dev->norm & V4L2_STD_GH)
1285                         if_frequency = 7100000;  /*7.1MHz       */
1286                 else if (dev->norm & V4L2_STD_PAL_I)
1287                         if_frequency = 7250000;  /*7.25MHz      */
1288                 else if (dev->norm & V4L2_STD_SECAM_L)
1289                         if_frequency = 6900000;  /*6.9MHz       */
1290                 else if (dev->norm & V4L2_STD_SECAM_LC)
1291                         if_frequency = 1250000;  /*1.25MHz      */
1292
1293                 dev_dbg(dev->dev,
1294                         "if_frequency is set to %d\n", if_frequency);
1295                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1296
1297                 update_HH_register_after_set_DIF(dev);
1298         }
1299
1300         dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1301
1302         return rc;
1303 }
1304
1305 #ifdef CONFIG_VIDEO_ADV_DEBUG
1306
1307 int cx231xx_g_chip_info(struct file *file, void *fh,
1308                         struct v4l2_dbg_chip_info *chip)
1309 {
1310         switch (chip->match.addr) {
1311         case 0: /* Cx231xx - internal registers */
1312                 return 0;
1313         case 1: /* AFE - read byte */
1314                 strlcpy(chip->name, "AFE (byte)", sizeof(chip->name));
1315                 return 0;
1316         case 2: /* Video Block - read byte */
1317                 strlcpy(chip->name, "Video (byte)", sizeof(chip->name));
1318                 return 0;
1319         case 3: /* I2S block - read byte */
1320                 strlcpy(chip->name, "I2S (byte)", sizeof(chip->name));
1321                 return 0;
1322         case 4: /* AFE - read dword */
1323                 strlcpy(chip->name, "AFE (dword)", sizeof(chip->name));
1324                 return 0;
1325         case 5: /* Video Block - read dword */
1326                 strlcpy(chip->name, "Video (dword)", sizeof(chip->name));
1327                 return 0;
1328         case 6: /* I2S Block - read dword */
1329                 strlcpy(chip->name, "I2S (dword)", sizeof(chip->name));
1330                 return 0;
1331         }
1332         return -EINVAL;
1333 }
1334
1335 int cx231xx_g_register(struct file *file, void *priv,
1336                              struct v4l2_dbg_register *reg)
1337 {
1338         struct cx231xx_fh *fh = priv;
1339         struct cx231xx *dev = fh->dev;
1340         int ret;
1341         u8 value[4] = { 0, 0, 0, 0 };
1342         u32 data = 0;
1343
1344         switch (reg->match.addr) {
1345         case 0: /* Cx231xx - internal registers */
1346                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1347                                 (u16)reg->reg, value, 4);
1348                 reg->val = value[0] | value[1] << 8 |
1349                         value[2] << 16 | value[3] << 24;
1350                 reg->size = 4;
1351                 break;
1352         case 1: /* AFE - read byte */
1353                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1354                                 (u16)reg->reg, 2, &data, 1);
1355                 reg->val = data;
1356                 reg->size = 1;
1357                 break;
1358         case 2: /* Video Block - read byte */
1359                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1360                                 (u16)reg->reg, 2, &data, 1);
1361                 reg->val = data;
1362                 reg->size = 1;
1363                 break;
1364         case 3: /* I2S block - read byte */
1365                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1366                                 (u16)reg->reg, 1, &data, 1);
1367                 reg->val = data;
1368                 reg->size = 1;
1369                 break;
1370         case 4: /* AFE - read dword */
1371                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1372                                 (u16)reg->reg, 2, &data, 4);
1373                 reg->val = data;
1374                 reg->size = 4;
1375                 break;
1376         case 5: /* Video Block - read dword */
1377                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1378                                 (u16)reg->reg, 2, &data, 4);
1379                 reg->val = data;
1380                 reg->size = 4;
1381                 break;
1382         case 6: /* I2S Block - read dword */
1383                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1384                                 (u16)reg->reg, 1, &data, 4);
1385                 reg->val = data;
1386                 reg->size = 4;
1387                 break;
1388         default:
1389                 return -EINVAL;
1390         }
1391         return ret < 0 ? ret : 0;
1392 }
1393
1394 int cx231xx_s_register(struct file *file, void *priv,
1395                              const struct v4l2_dbg_register *reg)
1396 {
1397         struct cx231xx_fh *fh = priv;
1398         struct cx231xx *dev = fh->dev;
1399         int ret;
1400         u8 data[4] = { 0, 0, 0, 0 };
1401
1402         switch (reg->match.addr) {
1403         case 0: /* cx231xx internal registers */
1404                 data[0] = (u8) reg->val;
1405                 data[1] = (u8) (reg->val >> 8);
1406                 data[2] = (u8) (reg->val >> 16);
1407                 data[3] = (u8) (reg->val >> 24);
1408                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1409                                 (u16)reg->reg, data, 4);
1410                 break;
1411         case 1: /* AFE - write byte */
1412                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1413                                 (u16)reg->reg, 2, reg->val, 1);
1414                 break;
1415         case 2: /* Video Block - write byte */
1416                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1417                                 (u16)reg->reg, 2, reg->val, 1);
1418                 break;
1419         case 3: /* I2S block - write byte */
1420                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1421                                 (u16)reg->reg, 1, reg->val, 1);
1422                 break;
1423         case 4: /* AFE - write dword */
1424                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1425                                 (u16)reg->reg, 2, reg->val, 4);
1426                 break;
1427         case 5: /* Video Block - write dword */
1428                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1429                                 (u16)reg->reg, 2, reg->val, 4);
1430                 break;
1431         case 6: /* I2S block - write dword */
1432                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1433                                 (u16)reg->reg, 1, reg->val, 4);
1434                 break;
1435         default:
1436                 return -EINVAL;
1437         }
1438         return ret < 0 ? ret : 0;
1439 }
1440 #endif
1441
1442 static int vidioc_cropcap(struct file *file, void *priv,
1443                           struct v4l2_cropcap *cc)
1444 {
1445         struct cx231xx_fh *fh = priv;
1446         struct cx231xx *dev = fh->dev;
1447
1448         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1449                 return -EINVAL;
1450
1451         cc->bounds.left = 0;
1452         cc->bounds.top = 0;
1453         cc->bounds.width = dev->width;
1454         cc->bounds.height = dev->height;
1455         cc->defrect = cc->bounds;
1456         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1457         cc->pixelaspect.denominator = 59;
1458
1459         return 0;
1460 }
1461
1462 static int vidioc_streamon(struct file *file, void *priv,
1463                            enum v4l2_buf_type type)
1464 {
1465         struct cx231xx_fh *fh = priv;
1466         struct cx231xx *dev = fh->dev;
1467         int rc;
1468
1469         rc = check_dev(dev);
1470         if (rc < 0)
1471                 return rc;
1472
1473         rc = res_get(fh);
1474
1475         if (likely(rc >= 0))
1476                 rc = videobuf_streamon(&fh->vb_vidq);
1477
1478         call_all(dev, video, s_stream, 1);
1479
1480         return rc;
1481 }
1482
1483 static int vidioc_streamoff(struct file *file, void *priv,
1484                             enum v4l2_buf_type type)
1485 {
1486         struct cx231xx_fh *fh = priv;
1487         struct cx231xx *dev = fh->dev;
1488         int rc;
1489
1490         rc = check_dev(dev);
1491         if (rc < 0)
1492                 return rc;
1493
1494         if (type != fh->type)
1495                 return -EINVAL;
1496
1497         cx25840_call(dev, video, s_stream, 0);
1498
1499         videobuf_streamoff(&fh->vb_vidq);
1500         res_free(fh);
1501
1502         return 0;
1503 }
1504
1505 int cx231xx_querycap(struct file *file, void *priv,
1506                            struct v4l2_capability *cap)
1507 {
1508         struct video_device *vdev = video_devdata(file);
1509         struct cx231xx_fh *fh = priv;
1510         struct cx231xx *dev = fh->dev;
1511
1512         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1513         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1514         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1515
1516         if (vdev->vfl_type == VFL_TYPE_RADIO)
1517                 cap->device_caps = V4L2_CAP_RADIO;
1518         else {
1519                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1520                 if (vdev->vfl_type == VFL_TYPE_VBI)
1521                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1522                 else
1523                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1524         }
1525         if (dev->tuner_type != TUNER_ABSENT)
1526                 cap->device_caps |= V4L2_CAP_TUNER;
1527         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1528                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1529                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1530         if (video_is_registered(&dev->radio_dev))
1531                 cap->capabilities |= V4L2_CAP_RADIO;
1532
1533         return 0;
1534 }
1535
1536 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1537                                    struct v4l2_fmtdesc *f)
1538 {
1539         if (unlikely(f->index >= ARRAY_SIZE(format)))
1540                 return -EINVAL;
1541
1542         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1543         f->pixelformat = format[f->index].fourcc;
1544
1545         return 0;
1546 }
1547
1548 /* RAW VBI ioctls */
1549
1550 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1551                                 struct v4l2_format *f)
1552 {
1553         struct cx231xx_fh *fh = priv;
1554         struct cx231xx *dev = fh->dev;
1555
1556         f->fmt.vbi.sampling_rate = 6750000 * 4;
1557         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1558         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1559         f->fmt.vbi.offset = 0;
1560         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1561             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1562         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1563             PAL_VBI_LINES : NTSC_VBI_LINES;
1564         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1565             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1566         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1567         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1568
1569         return 0;
1570
1571 }
1572
1573 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1574                                   struct v4l2_format *f)
1575 {
1576         struct cx231xx_fh *fh = priv;
1577         struct cx231xx *dev = fh->dev;
1578
1579         f->fmt.vbi.sampling_rate = 6750000 * 4;
1580         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1581         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1582         f->fmt.vbi.offset = 0;
1583         f->fmt.vbi.flags = 0;
1584         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1585             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1586         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1587             PAL_VBI_LINES : NTSC_VBI_LINES;
1588         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1589             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1590         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1591         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1592
1593         return 0;
1594
1595 }
1596
1597 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1598                                   struct v4l2_format *f)
1599 {
1600         struct cx231xx_fh *fh = priv;
1601         struct cx231xx *dev = fh->dev;
1602
1603         if (dev->vbi_stream_on && !fh->stream_on) {
1604                 dev_err(dev->dev,
1605                         "%s device in use by another fh\n", __func__);
1606                 return -EBUSY;
1607         }
1608         return vidioc_try_fmt_vbi_cap(file, priv, f);
1609 }
1610
1611 static int vidioc_reqbufs(struct file *file, void *priv,
1612                           struct v4l2_requestbuffers *rb)
1613 {
1614         struct cx231xx_fh *fh = priv;
1615         struct cx231xx *dev = fh->dev;
1616         int rc;
1617
1618         rc = check_dev(dev);
1619         if (rc < 0)
1620                 return rc;
1621
1622         return videobuf_reqbufs(&fh->vb_vidq, rb);
1623 }
1624
1625 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1626 {
1627         struct cx231xx_fh *fh = priv;
1628         struct cx231xx *dev = fh->dev;
1629         int rc;
1630
1631         rc = check_dev(dev);
1632         if (rc < 0)
1633                 return rc;
1634
1635         return videobuf_querybuf(&fh->vb_vidq, b);
1636 }
1637
1638 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1639 {
1640         struct cx231xx_fh *fh = priv;
1641         struct cx231xx *dev = fh->dev;
1642         int rc;
1643
1644         rc = check_dev(dev);
1645         if (rc < 0)
1646                 return rc;
1647
1648         return videobuf_qbuf(&fh->vb_vidq, b);
1649 }
1650
1651 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1652 {
1653         struct cx231xx_fh *fh = priv;
1654         struct cx231xx *dev = fh->dev;
1655         int rc;
1656
1657         rc = check_dev(dev);
1658         if (rc < 0)
1659                 return rc;
1660
1661         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1662 }
1663
1664 /* ----------------------------------------------------------- */
1665 /* RADIO ESPECIFIC IOCTLS                                      */
1666 /* ----------------------------------------------------------- */
1667
1668 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1669 {
1670         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1671
1672         if (t->index)
1673                 return -EINVAL;
1674
1675         strcpy(t->name, "Radio");
1676
1677         call_all(dev, tuner, g_tuner, t);
1678
1679         return 0;
1680 }
1681 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1682 {
1683         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1684
1685         if (t->index)
1686                 return -EINVAL;
1687
1688         call_all(dev, tuner, s_tuner, t);
1689
1690         return 0;
1691 }
1692
1693 /*
1694  * cx231xx_v4l2_open()
1695  * inits the device and starts isoc transfer
1696  */
1697 static int cx231xx_v4l2_open(struct file *filp)
1698 {
1699         int radio = 0;
1700         struct video_device *vdev = video_devdata(filp);
1701         struct cx231xx *dev = video_drvdata(filp);
1702         struct cx231xx_fh *fh;
1703         enum v4l2_buf_type fh_type = 0;
1704
1705         switch (vdev->vfl_type) {
1706         case VFL_TYPE_GRABBER:
1707                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1708                 break;
1709         case VFL_TYPE_VBI:
1710                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1711                 break;
1712         case VFL_TYPE_RADIO:
1713                 radio = 1;
1714                 break;
1715         }
1716
1717         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1718                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1719                          dev->users);
1720
1721 #if 0
1722         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1723         if (errCode < 0) {
1724                 dev_err(dev->dev,
1725                         "Device locked on digital mode. Can't open analog\n");
1726                 return -EBUSY;
1727         }
1728 #endif
1729
1730         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1731         if (!fh)
1732                 return -ENOMEM;
1733         if (mutex_lock_interruptible(&dev->lock)) {
1734                 kfree(fh);
1735                 return -ERESTARTSYS;
1736         }
1737         fh->dev = dev;
1738         fh->type = fh_type;
1739         filp->private_data = fh;
1740         v4l2_fh_init(&fh->fh, vdev);
1741
1742         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1743                 /* Power up in Analog TV mode */
1744                 if (dev->board.external_av)
1745                         cx231xx_set_power_mode(dev,
1746                                  POLARIS_AVMODE_ENXTERNAL_AV);
1747                 else
1748                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1749
1750 #if 0
1751                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1752 #endif
1753
1754                 /* set video alternate setting */
1755                 cx231xx_set_video_alternate(dev);
1756
1757                 /* Needed, since GPIO might have disabled power of
1758                    some i2c device */
1759                 cx231xx_config_i2c(dev);
1760
1761                 /* device needs to be initialized before isoc transfer */
1762                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1763
1764         }
1765         if (radio) {
1766                 cx231xx_videodbg("video_open: setting radio device\n");
1767
1768                 /* cx231xx_start_radio(dev); */
1769
1770                 call_all(dev, tuner, s_radio);
1771         }
1772
1773         dev->users++;
1774
1775         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1776                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1777                                             NULL, &dev->video_mode.slock,
1778                                             fh->type, V4L2_FIELD_INTERLACED,
1779                                             sizeof(struct cx231xx_buffer),
1780                                             fh, &dev->lock);
1781         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1782                 /* Set the required alternate setting  VBI interface works in
1783                    Bulk mode only */
1784                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1785
1786                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1787                                             NULL, &dev->vbi_mode.slock,
1788                                             fh->type, V4L2_FIELD_SEQ_TB,
1789                                             sizeof(struct cx231xx_buffer),
1790                                             fh, &dev->lock);
1791         }
1792         mutex_unlock(&dev->lock);
1793         v4l2_fh_add(&fh->fh);
1794
1795         return 0;
1796 }
1797
1798 /*
1799  * cx231xx_realease_resources()
1800  * unregisters the v4l2,i2c and usb devices
1801  * called when the device gets disconected or at module unload
1802 */
1803 void cx231xx_release_analog_resources(struct cx231xx *dev)
1804 {
1805
1806         /*FIXME: I2C IR should be disconnected */
1807
1808         if (video_is_registered(&dev->radio_dev))
1809                 video_unregister_device(&dev->radio_dev);
1810         if (video_is_registered(&dev->vbi_dev)) {
1811                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1812                         video_device_node_name(&dev->vbi_dev));
1813                 video_unregister_device(&dev->vbi_dev);
1814         }
1815         if (video_is_registered(&dev->vdev)) {
1816                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1817                         video_device_node_name(&dev->vdev));
1818
1819                 if (dev->board.has_417)
1820                         cx231xx_417_unregister(dev);
1821
1822                 video_unregister_device(&dev->vdev);
1823         }
1824         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1825         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1826 }
1827
1828 /*
1829  * cx231xx_close()
1830  * stops streaming and deallocates all resources allocated by the v4l2
1831  * calls and ioctls
1832  */
1833 static int cx231xx_close(struct file *filp)
1834 {
1835         struct cx231xx_fh *fh = filp->private_data;
1836         struct cx231xx *dev = fh->dev;
1837
1838         cx231xx_videodbg("users=%d\n", dev->users);
1839
1840         cx231xx_videodbg("users=%d\n", dev->users);
1841         if (res_check(fh))
1842                 res_free(fh);
1843
1844         /*
1845          * To workaround error number=-71 on EP0 for VideoGrabber,
1846          *       need exclude following.
1847          * FIXME: It is probably safe to remove most of these, as we're
1848          * now avoiding the alternate setting for INDEX_VANC
1849          */
1850         if (!dev->board.no_alt_vanc)
1851                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1852                         videobuf_stop(&fh->vb_vidq);
1853                         videobuf_mmap_free(&fh->vb_vidq);
1854
1855                         /* the device is already disconnect,
1856                            free the remaining resources */
1857                         if (dev->state & DEV_DISCONNECTED) {
1858                                 if (atomic_read(&dev->devlist_count) > 0) {
1859                                         cx231xx_release_resources(dev);
1860                                         fh->dev = NULL;
1861                                         return 0;
1862                                 }
1863                                 return 0;
1864                         }
1865
1866                         /* do this before setting alternate! */
1867                         cx231xx_uninit_vbi_isoc(dev);
1868
1869                         /* set alternate 0 */
1870                         if (!dev->vbi_or_sliced_cc_mode)
1871                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1872                         else
1873                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1874
1875                         v4l2_fh_del(&fh->fh);
1876                         v4l2_fh_exit(&fh->fh);
1877                         kfree(fh);
1878                         dev->users--;
1879                         wake_up_interruptible(&dev->open);
1880                         return 0;
1881                 }
1882
1883         v4l2_fh_del(&fh->fh);
1884         dev->users--;
1885         if (!dev->users) {
1886                 videobuf_stop(&fh->vb_vidq);
1887                 videobuf_mmap_free(&fh->vb_vidq);
1888
1889                 /* the device is already disconnect,
1890                    free the remaining resources */
1891                 if (dev->state & DEV_DISCONNECTED) {
1892                         cx231xx_release_resources(dev);
1893                         fh->dev = NULL;
1894                         return 0;
1895                 }
1896
1897                 /* Save some power by putting tuner to sleep */
1898                 call_all(dev, core, s_power, 0);
1899
1900                 /* do this before setting alternate! */
1901                 if (dev->USE_ISO)
1902                         cx231xx_uninit_isoc(dev);
1903                 else
1904                         cx231xx_uninit_bulk(dev);
1905                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1906
1907                 /* set alternate 0 */
1908                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1909         }
1910         v4l2_fh_exit(&fh->fh);
1911         kfree(fh);
1912         wake_up_interruptible(&dev->open);
1913         return 0;
1914 }
1915
1916 static int cx231xx_v4l2_close(struct file *filp)
1917 {
1918         struct cx231xx_fh *fh = filp->private_data;
1919         struct cx231xx *dev = fh->dev;
1920         int rc;
1921
1922         mutex_lock(&dev->lock);
1923         rc = cx231xx_close(filp);
1924         mutex_unlock(&dev->lock);
1925         return rc;
1926 }
1927
1928 /*
1929  * cx231xx_v4l2_read()
1930  * will allocate buffers when called for the first time
1931  */
1932 static ssize_t
1933 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1934                   loff_t *pos)
1935 {
1936         struct cx231xx_fh *fh = filp->private_data;
1937         struct cx231xx *dev = fh->dev;
1938         int rc;
1939
1940         rc = check_dev(dev);
1941         if (rc < 0)
1942                 return rc;
1943
1944         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1945             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1946                 rc = res_get(fh);
1947
1948                 if (unlikely(rc < 0))
1949                         return rc;
1950
1951                 if (mutex_lock_interruptible(&dev->lock))
1952                         return -ERESTARTSYS;
1953                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1954                                             filp->f_flags & O_NONBLOCK);
1955                 mutex_unlock(&dev->lock);
1956                 return rc;
1957         }
1958         return 0;
1959 }
1960
1961 /*
1962  * cx231xx_v4l2_poll()
1963  * will allocate buffers when called for the first time
1964  */
1965 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
1966 {
1967         unsigned long req_events = poll_requested_events(wait);
1968         struct cx231xx_fh *fh = filp->private_data;
1969         struct cx231xx *dev = fh->dev;
1970         unsigned res = 0;
1971         int rc;
1972
1973         rc = check_dev(dev);
1974         if (rc < 0)
1975                 return POLLERR;
1976
1977         rc = res_get(fh);
1978
1979         if (unlikely(rc < 0))
1980                 return POLLERR;
1981
1982         if (v4l2_event_pending(&fh->fh))
1983                 res |= POLLPRI;
1984         else
1985                 poll_wait(filp, &fh->fh.wait, wait);
1986
1987         if (!(req_events & (POLLIN | POLLRDNORM)))
1988                 return res;
1989
1990         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
1991             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
1992                 mutex_lock(&dev->lock);
1993                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1994                 mutex_unlock(&dev->lock);
1995                 return res;
1996         }
1997         return res | POLLERR;
1998 }
1999
2000 /*
2001  * cx231xx_v4l2_mmap()
2002  */
2003 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2004 {
2005         struct cx231xx_fh *fh = filp->private_data;
2006         struct cx231xx *dev = fh->dev;
2007         int rc;
2008
2009         rc = check_dev(dev);
2010         if (rc < 0)
2011                 return rc;
2012
2013         rc = res_get(fh);
2014
2015         if (unlikely(rc < 0))
2016                 return rc;
2017
2018         if (mutex_lock_interruptible(&dev->lock))
2019                 return -ERESTARTSYS;
2020         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2021         mutex_unlock(&dev->lock);
2022
2023         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2024                          (unsigned long)vma->vm_start,
2025                          (unsigned long)vma->vm_end -
2026                          (unsigned long)vma->vm_start, rc);
2027
2028         return rc;
2029 }
2030
2031 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2032         .owner   = THIS_MODULE,
2033         .open    = cx231xx_v4l2_open,
2034         .release = cx231xx_v4l2_close,
2035         .read    = cx231xx_v4l2_read,
2036         .poll    = cx231xx_v4l2_poll,
2037         .mmap    = cx231xx_v4l2_mmap,
2038         .unlocked_ioctl   = video_ioctl2,
2039 };
2040
2041 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2042         .vidioc_querycap               = cx231xx_querycap,
2043         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2044         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2045         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2046         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2047         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2048         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2049         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
2050         .vidioc_cropcap                = vidioc_cropcap,
2051         .vidioc_reqbufs                = vidioc_reqbufs,
2052         .vidioc_querybuf               = vidioc_querybuf,
2053         .vidioc_qbuf                   = vidioc_qbuf,
2054         .vidioc_dqbuf                  = vidioc_dqbuf,
2055         .vidioc_s_std                  = vidioc_s_std,
2056         .vidioc_g_std                  = vidioc_g_std,
2057         .vidioc_enum_input             = cx231xx_enum_input,
2058         .vidioc_g_input                = cx231xx_g_input,
2059         .vidioc_s_input                = cx231xx_s_input,
2060         .vidioc_streamon               = vidioc_streamon,
2061         .vidioc_streamoff              = vidioc_streamoff,
2062         .vidioc_g_tuner                = cx231xx_g_tuner,
2063         .vidioc_s_tuner                = cx231xx_s_tuner,
2064         .vidioc_g_frequency            = cx231xx_g_frequency,
2065         .vidioc_s_frequency            = cx231xx_s_frequency,
2066 #ifdef CONFIG_VIDEO_ADV_DEBUG
2067         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2068         .vidioc_g_register             = cx231xx_g_register,
2069         .vidioc_s_register             = cx231xx_s_register,
2070 #endif
2071         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2072         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2073 };
2074
2075 static struct video_device cx231xx_vbi_template;
2076
2077 static const struct video_device cx231xx_video_template = {
2078         .fops         = &cx231xx_v4l_fops,
2079         .release      = video_device_release_empty,
2080         .ioctl_ops    = &video_ioctl_ops,
2081         .tvnorms      = V4L2_STD_ALL,
2082 };
2083
2084 static const struct v4l2_file_operations radio_fops = {
2085         .owner   = THIS_MODULE,
2086         .open   = cx231xx_v4l2_open,
2087         .release = cx231xx_v4l2_close,
2088         .poll = v4l2_ctrl_poll,
2089         .unlocked_ioctl = video_ioctl2,
2090 };
2091
2092 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2093         .vidioc_querycap    = cx231xx_querycap,
2094         .vidioc_g_tuner     = radio_g_tuner,
2095         .vidioc_s_tuner     = radio_s_tuner,
2096         .vidioc_g_frequency = cx231xx_g_frequency,
2097         .vidioc_s_frequency = cx231xx_s_frequency,
2098 #ifdef CONFIG_VIDEO_ADV_DEBUG
2099         .vidioc_g_chip_info = cx231xx_g_chip_info,
2100         .vidioc_g_register  = cx231xx_g_register,
2101         .vidioc_s_register  = cx231xx_s_register,
2102 #endif
2103         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2104         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2105 };
2106
2107 static struct video_device cx231xx_radio_template = {
2108         .name      = "cx231xx-radio",
2109         .fops      = &radio_fops,
2110         .ioctl_ops = &radio_ioctl_ops,
2111 };
2112
2113 /******************************** usb interface ******************************/
2114
2115 static void cx231xx_vdev_init(struct cx231xx *dev,
2116                 struct video_device *vfd,
2117                 const struct video_device *template,
2118                 const char *type_name)
2119 {
2120         *vfd = *template;
2121         vfd->v4l2_dev = &dev->v4l2_dev;
2122         vfd->release = video_device_release_empty;
2123         vfd->lock = &dev->lock;
2124
2125         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2126
2127         video_set_drvdata(vfd, dev);
2128         if (dev->tuner_type == TUNER_ABSENT) {
2129                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2130                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2131                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2132                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2133         }
2134 }
2135
2136 int cx231xx_register_analog_devices(struct cx231xx *dev)
2137 {
2138         int ret;
2139
2140         dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2141
2142         /* set default norm */
2143         dev->norm = V4L2_STD_PAL;
2144         dev->width = norm_maxw(dev);
2145         dev->height = norm_maxh(dev);
2146         dev->interlaced = 0;
2147
2148         /* Analog specific initialization */
2149         dev->format = &format[0];
2150
2151         /* Set the initial input */
2152         video_mux(dev, dev->video_input);
2153
2154         call_all(dev, video, s_std, dev->norm);
2155
2156         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2157         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2158
2159         if (dev->sd_cx25840) {
2160                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2161                                 dev->sd_cx25840->ctrl_handler, NULL);
2162                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2163                                 dev->sd_cx25840->ctrl_handler,
2164                                 v4l2_ctrl_radio_filter);
2165         }
2166
2167         if (dev->ctrl_handler.error)
2168                 return dev->ctrl_handler.error;
2169         if (dev->radio_ctrl_handler.error)
2170                 return dev->radio_ctrl_handler.error;
2171
2172         /* enable vbi capturing */
2173         /* write code here...  */
2174
2175         /* allocate and fill video video_device struct */
2176         cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2177 #if defined(CONFIG_MEDIA_CONTROLLER)
2178         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2179         ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0);
2180         if (ret < 0)
2181                 dev_err(dev->dev, "failed to initialize video media entity!\n");
2182 #endif
2183         dev->vdev.ctrl_handler = &dev->ctrl_handler;
2184         /* register v4l2 video video_device */
2185         ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2186                                     video_nr[dev->devno]);
2187         if (ret) {
2188                 dev_err(dev->dev,
2189                         "unable to register video device (error=%i).\n",
2190                         ret);
2191                 return ret;
2192         }
2193
2194         dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2195                 video_device_node_name(&dev->vdev));
2196
2197         /* Initialize VBI template */
2198         cx231xx_vbi_template = cx231xx_video_template;
2199         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2200
2201         /* Allocate and fill vbi video_device struct */
2202         cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2203
2204 #if defined(CONFIG_MEDIA_CONTROLLER)
2205         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2206         ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0);
2207         if (ret < 0)
2208                 dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2209 #endif
2210         dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2211         /* register v4l2 vbi video_device */
2212         ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2213                                     vbi_nr[dev->devno]);
2214         if (ret < 0) {
2215                 dev_err(dev->dev, "unable to register vbi device\n");
2216                 return ret;
2217         }
2218
2219         dev_info(dev->dev, "Registered VBI device %s\n",
2220                 video_device_node_name(&dev->vbi_dev));
2221
2222         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2223                 cx231xx_vdev_init(dev, &dev->radio_dev,
2224                                 &cx231xx_radio_template, "radio");
2225                 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2226                 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2227                                             radio_nr[dev->devno]);
2228                 if (ret < 0) {
2229                         dev_err(dev->dev,
2230                                 "can't register radio device\n");
2231                         return ret;
2232                 }
2233                 dev_info(dev->dev, "Registered radio device as %s\n",
2234                         video_device_node_name(&dev->radio_dev));
2235         }
2236
2237         return 0;
2238 }