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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3    cx231xx-video.c - driver for Conexant Cx23100/101/102
   4                      USB video capture devices
   5
   6    Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   7         Based on em28xx driver
   8         Based on cx23885 driver
   9         Based on cx88 driver
  10
  11  */
  12
  13 #include "cx231xx.h"
  14 #include <linux/init.h>
  15 #include <linux/list.h>
  16 #include <linux/module.h>
  17 #include <linux/kernel.h>
  18 #include <linux/bitmap.h>
  19 #include <linux/i2c.h>
  20 #include <linux/mm.h>
  21 #include <linux/mutex.h>
  22 #include <linux/slab.h>
  23
  24 #include <media/v4l2-common.h>
  25 #include <media/v4l2-ioctl.h>
  26 #include <media/v4l2-event.h>
  27 #include <media/drv-intf/msp3400.h>
  28 #include <media/tuner.h>
  29
  30 #include <media/dvb_frontend.h>
  31
  32 #include "cx231xx-vbi.h"
  33
  34 #define CX231XX_VERSION "0.0.3"
  35
  36 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  37 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  38
  39 #define cx231xx_videodbg(fmt, arg...) do {\
  40         if (video_debug) \
  41                 printk(KERN_INFO "%s %s :"fmt, \
  42                          dev->name, __func__ , ##arg); } while (0)
  43
  44 static unsigned int isoc_debug;
  45 module_param(isoc_debug, int, 0644);
  46 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  47
  48 #define cx231xx_isocdbg(fmt, arg...) \
  49 do {\
  50         if (isoc_debug) { \
  51                 printk(KERN_INFO "%s %s :"fmt, \
  52                          dev->name, __func__ , ##arg); \
  53         } \
  54   } while (0)
  55
  56 MODULE_AUTHOR(DRIVER_AUTHOR);
  57 MODULE_DESCRIPTION(DRIVER_DESC);
  58 MODULE_LICENSE("GPL");
  59 MODULE_VERSION(CX231XX_VERSION);
  60
  61 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  62 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  63 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  64 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  65
  66 module_param_array(card, int, NULL, 0444);
  67 module_param_array(video_nr, int, NULL, 0444);
  68 module_param_array(vbi_nr, int, NULL, 0444);
  69 module_param_array(radio_nr, int, NULL, 0444);
  70
  71 MODULE_PARM_DESC(card, "card type");
  72 MODULE_PARM_DESC(video_nr, "video device numbers");
  73 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  74 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  75
  76 static unsigned int video_debug;
  77 module_param(video_debug, int, 0644);
  78 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  79
  80 /* supported video standards */
  81 static struct cx231xx_fmt format[] = {
  82         {
  83          .name = "16bpp YUY2, 4:2:2, packed",
  84          .fourcc = V4L2_PIX_FMT_YUYV,
  85          .depth = 16,
  86          .reg = 0,
  87          },
  88 };
  89
  90
  91 static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
  92 {
  93 #ifdef CONFIG_MEDIA_CONTROLLER
  94         struct media_device *mdev = dev->media_dev;
  95         struct media_entity  *entity, *decoder = NULL, *source;
  96         struct media_link *link, *found_link = NULL;
  97         int ret, active_links = 0;
  98
  99         if (!mdev)
 100                 return 0;
 101
 102         /*
 103          * This will find the tuner that is connected into the decoder.
 104          * Technically, this is not 100% correct, as the device may be
 105          * using an analog input instead of the tuner. However, as we can't
 106          * do DVB streaming while the DMA engine is being used for V4L2,
 107          * this should be enough for the actual needs.
 108          */
 109         media_device_for_each_entity(entity, mdev) {
 110                 if (entity->function == MEDIA_ENT_F_ATV_DECODER) {
 111                         decoder = entity;
 112                         break;
 113                 }
 114         }
 115         if (!decoder)
 116                 return 0;
 117
 118         list_for_each_entry(link, &decoder->links, list) {
 119                 if (link->sink->entity == decoder) {
 120                         found_link = link;
 121                         if (link->flags & MEDIA_LNK_FL_ENABLED)
 122                                 active_links++;
 123                         break;
 124                 }
 125         }
 126
 127         if (active_links == 1 || !found_link)
 128                 return 0;
 129
 130         source = found_link->source->entity;
 131         list_for_each_entry(link, &source->links, list) {
 132                 struct media_entity *sink;
 133                 int flags = 0;
 134
 135                 sink = link->sink->entity;
 136
 137                 if (sink == entity)
 138                         flags = MEDIA_LNK_FL_ENABLED;
 139
 140                 ret = media_entity_setup_link(link, flags);
 141                 if (ret) {
 142                         dev_err(dev->dev,
 143                                 "Couldn't change link %s->%s to %s. Error %d\n",
 144                                 source->name, sink->name,
 145                                 flags ? "enabled" : "disabled",
 146                                 ret);
 147                         return ret;
 148                 } else
 149                         dev_dbg(dev->dev,
 150                                 "link %s->%s was %s\n",
 151                                 source->name, sink->name,
 152                                 flags ? "ENABLED" : "disabled");
 153         }
 154 #endif
 155         return 0;
 156 }
 157
 158 /* ------------------------------------------------------------------
 159         Video buffer and parser functions
 160    ------------------------------------------------------------------*/
 161
 162 /*
 163  * Announces that a buffer were filled and request the next
 164  */
 165 static inline void buffer_filled(struct cx231xx *dev,
 166                                  struct cx231xx_dmaqueue *dma_q,
 167                                  struct cx231xx_buffer *buf)
 168 {
 169         /* Advice that buffer was filled */
 170         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 171         buf->vb.state = VIDEOBUF_DONE;
 172         buf->vb.field_count++;
 173         buf->vb.ts = ktime_get_ns();
 174
 175         if (dev->USE_ISO)
 176                 dev->video_mode.isoc_ctl.buf = NULL;
 177         else
 178                 dev->video_mode.bulk_ctl.buf = NULL;
 179
 180         list_del(&buf->vb.queue);
 181         wake_up(&buf->vb.done);
 182 }
 183
 184 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 185 {
 186         char *errmsg = "Unknown";
 187
 188         switch (status) {
 189         case -ENOENT:
 190                 errmsg = "unlinked synchronously";
 191                 break;
 192         case -ECONNRESET:
 193                 errmsg = "unlinked asynchronously";
 194                 break;
 195         case -ENOSR:
 196                 errmsg = "Buffer error (overrun)";
 197                 break;
 198         case -EPIPE:
 199                 errmsg = "Stalled (device not responding)";
 200                 break;
 201         case -EOVERFLOW:
 202                 errmsg = "Babble (bad cable?)";
 203                 break;
 204         case -EPROTO:
 205                 errmsg = "Bit-stuff error (bad cable?)";
 206                 break;
 207         case -EILSEQ:
 208                 errmsg = "CRC/Timeout (could be anything)";
 209                 break;
 210         case -ETIME:
 211                 errmsg = "Device does not respond";
 212                 break;
 213         }
 214         if (packet < 0) {
 215                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 216         } else {
 217                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 218                                 packet, status, errmsg);
 219         }
 220 }
 221
 222 /*
 223  * video-buf generic routine to get the next available buffer
 224  */
 225 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 226                                 struct cx231xx_buffer **buf)
 227 {
 228         struct cx231xx_video_mode *vmode =
 229             container_of(dma_q, struct cx231xx_video_mode, vidq);
 230         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 231
 232         char *outp;
 233
 234         if (list_empty(&dma_q->active)) {
 235                 cx231xx_isocdbg("No active queue to serve\n");
 236                 if (dev->USE_ISO)
 237                         dev->video_mode.isoc_ctl.buf = NULL;
 238                 else
 239                         dev->video_mode.bulk_ctl.buf = NULL;
 240                 *buf = NULL;
 241                 return;
 242         }
 243
 244         /* Get the next buffer */
 245         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 246
 247         /* Cleans up buffer - Useful for testing for frame/URB loss */
 248         outp = videobuf_to_vmalloc(&(*buf)->vb);
 249         memset(outp, 0, (*buf)->vb.size);
 250
 251         if (dev->USE_ISO)
 252                 dev->video_mode.isoc_ctl.buf = *buf;
 253         else
 254                 dev->video_mode.bulk_ctl.buf = *buf;
 255
 256         return;
 257 }
 258
 259 /*
 260  * Controls the isoc copy of each urb packet
 261  */
 262 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 263 {
 264         struct cx231xx_dmaqueue *dma_q = urb->context;
 265         int i;
 266         unsigned char *p_buffer;
 267         u32 bytes_parsed = 0, buffer_size = 0;
 268         u8 sav_eav = 0;
 269
 270         if (!dev)
 271                 return 0;
 272
 273         if (dev->state & DEV_DISCONNECTED)
 274                 return 0;
 275
 276         if (urb->status < 0) {
 277                 print_err_status(dev, -1, urb->status);
 278                 if (urb->status == -ENOENT)
 279                         return 0;
 280         }
 281
 282         for (i = 0; i < urb->number_of_packets; i++) {
 283                 int status = urb->iso_frame_desc[i].status;
 284
 285                 if (status < 0) {
 286                         print_err_status(dev, i, status);
 287                         if (urb->iso_frame_desc[i].status != -EPROTO)
 288                                 continue;
 289                 }
 290
 291                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 292                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 293                         continue;
 294                 }
 295                 if (urb->iso_frame_desc[i].actual_length >
 296                     dev->video_mode.max_pkt_size) {
 297                         cx231xx_isocdbg("packet bigger than packet size");
 298                         continue;
 299                 }
 300
 301                 /*  get buffer pointer and length */
 302                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 303                 buffer_size = urb->iso_frame_desc[i].actual_length;
 304                 bytes_parsed = 0;
 305
 306                 if (dma_q->is_partial_line) {
 307                         /* Handle the case of a partial line */
 308                         sav_eav = dma_q->last_sav;
 309                 } else {
 310                         /* Check for a SAV/EAV overlapping
 311                                 the buffer boundary */
 312                         sav_eav =
 313                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 314                                                           dma_q->partial_buf,
 315                                                           &bytes_parsed);
 316                 }
 317
 318                 sav_eav &= 0xF0;
 319                 /* Get the first line if we have some portion of an SAV/EAV from
 320                    the last buffer or a partial line  */
 321                 if (sav_eav) {
 322                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 323                                 sav_eav,        /* SAV/EAV */
 324                                 p_buffer + bytes_parsed,        /* p_buffer */
 325                                 buffer_size - bytes_parsed);/* buf size */
 326                 }
 327
 328                 /* Now parse data that is completely in this buffer */
 329                 /* dma_q->is_partial_line = 0;  */
 330
 331                 while (bytes_parsed < buffer_size) {
 332                         u32 bytes_used = 0;
 333
 334                         sav_eav = cx231xx_find_next_SAV_EAV(
 335                                 p_buffer + bytes_parsed,        /* p_buffer */
 336                                 buffer_size - bytes_parsed,     /* buf size */
 337                                 &bytes_used);/* bytes used to get SAV/EAV */
 338
 339                         bytes_parsed += bytes_used;
 340
 341                         sav_eav &= 0xF0;
 342                         if (sav_eav && (bytes_parsed < buffer_size)) {
 343                                 bytes_parsed += cx231xx_get_video_line(dev,
 344                                         dma_q, sav_eav, /* SAV/EAV */
 345                                         p_buffer + bytes_parsed,/* p_buffer */
 346                                         buffer_size - bytes_parsed);/*buf size*/
 347                         }
 348                 }
 349
 350                 /* Save the last four bytes of the buffer so we can check the
 351                    buffer boundary condition next time */
 352                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 353                 bytes_parsed = 0;
 354
 355         }
 356         return 1;
 357 }
 358
 359 static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
 360 {
 361         struct cx231xx_dmaqueue *dma_q = urb->context;
 362         unsigned char *p_buffer;
 363         u32 bytes_parsed = 0, buffer_size = 0;
 364         u8 sav_eav = 0;
 365
 366         if (!dev)
 367                 return 0;
 368
 369         if (dev->state & DEV_DISCONNECTED)
 370                 return 0;
 371
 372         if (urb->status < 0) {
 373                 print_err_status(dev, -1, urb->status);
 374                 if (urb->status == -ENOENT)
 375                         return 0;
 376         }
 377
 378         if (1) {
 379
 380                 /*  get buffer pointer and length */
 381                 p_buffer = urb->transfer_buffer;
 382                 buffer_size = urb->actual_length;
 383                 bytes_parsed = 0;
 384
 385                 if (dma_q->is_partial_line) {
 386                         /* Handle the case of a partial line */
 387                         sav_eav = dma_q->last_sav;
 388                 } else {
 389                         /* Check for a SAV/EAV overlapping
 390                                 the buffer boundary */
 391                         sav_eav =
 392                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 393                                                           dma_q->partial_buf,
 394                                                           &bytes_parsed);
 395                 }
 396
 397                 sav_eav &= 0xF0;
 398                 /* Get the first line if we have some portion of an SAV/EAV from
 399                    the last buffer or a partial line  */
 400                 if (sav_eav) {
 401                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 402                                 sav_eav,        /* SAV/EAV */
 403                                 p_buffer + bytes_parsed,        /* p_buffer */
 404                                 buffer_size - bytes_parsed);/* buf size */
 405                 }
 406
 407                 /* Now parse data that is completely in this buffer */
 408                 /* dma_q->is_partial_line = 0;  */
 409
 410                 while (bytes_parsed < buffer_size) {
 411                         u32 bytes_used = 0;
 412
 413                         sav_eav = cx231xx_find_next_SAV_EAV(
 414                                 p_buffer + bytes_parsed,        /* p_buffer */
 415                                 buffer_size - bytes_parsed,     /* buf size */
 416                                 &bytes_used);/* bytes used to get SAV/EAV */
 417
 418                         bytes_parsed += bytes_used;
 419
 420                         sav_eav &= 0xF0;
 421                         if (sav_eav && (bytes_parsed < buffer_size)) {
 422                                 bytes_parsed += cx231xx_get_video_line(dev,
 423                                         dma_q, sav_eav, /* SAV/EAV */
 424                                         p_buffer + bytes_parsed,/* p_buffer */
 425                                         buffer_size - bytes_parsed);/*buf size*/
 426                         }
 427                 }
 428
 429                 /* Save the last four bytes of the buffer so we can check the
 430                    buffer boundary condition next time */
 431                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 432                 bytes_parsed = 0;
 433
 434         }
 435         return 1;
 436 }
 437
 438
 439 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 440                                  u32 *p_bytes_used)
 441 {
 442         u32 bytes_used;
 443         u8 boundary_bytes[8];
 444         u8 sav_eav = 0;
 445
 446         *p_bytes_used = 0;
 447
 448         /* Create an array of the last 4 bytes of the last buffer and the first
 449            4 bytes of the current buffer. */
 450
 451         memcpy(boundary_bytes, partial_buf, 4);
 452         memcpy(boundary_bytes + 4, p_buffer, 4);
 453
 454         /* Check for the SAV/EAV in the boundary buffer */
 455         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 456                                             &bytes_used);
 457
 458         if (sav_eav) {
 459                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 460                    only those used in the new buffer */
 461                 *p_bytes_used = bytes_used - 4;
 462         }
 463
 464         return sav_eav;
 465 }
 466
 467 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 468 {
 469         u32 i;
 470         u8 sav_eav = 0;
 471
 472         /*
 473          * Don't search if the buffer size is less than 4.  It causes a page
 474          * fault since buffer_size - 4 evaluates to a large number in that
 475          * case.
 476          */
 477         if (buffer_size < 4) {
 478                 *p_bytes_used = buffer_size;
 479                 return 0;
 480         }
 481
 482         for (i = 0; i < (buffer_size - 3); i++) {
 483
 484                 if ((p_buffer[i] == 0xFF) &&
 485                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 486
 487                         *p_bytes_used = i + 4;
 488                         sav_eav = p_buffer[i + 3];
 489                         return sav_eav;
 490                 }
 491         }
 492
 493         *p_bytes_used = buffer_size;
 494         return 0;
 495 }
 496
 497 u32 cx231xx_get_video_line(struct cx231xx *dev,
 498                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 499                            u8 *p_buffer, u32 buffer_size)
 500 {
 501         u32 bytes_copied = 0;
 502         int current_field = -1;
 503
 504         switch (sav_eav) {
 505         case SAV_ACTIVE_VIDEO_FIELD1:
 506                 /* looking for skipped line which occurred in PAL 720x480 mode.
 507                    In this case, there will be no active data contained
 508                    between the SAV and EAV */
 509                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 510                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 511                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 512                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 513                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 514                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 515                         return bytes_copied;
 516                 current_field = 1;
 517                 break;
 518
 519         case SAV_ACTIVE_VIDEO_FIELD2:
 520                 /* looking for skipped line which occurred in PAL 720x480 mode.
 521                    In this case, there will be no active data contained between
 522                    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 = 2;
 531                 break;
 532         }
 533
 534         dma_q->last_sav = sav_eav;
 535
 536         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 537                                                buffer_size, current_field);
 538
 539         return bytes_copied;
 540 }
 541
 542 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 543                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 544                             u32 length, int field_number)
 545 {
 546         u32 bytes_to_copy;
 547         struct cx231xx_buffer *buf;
 548         u32 _line_size = dev->width * 2;
 549
 550         if (dma_q->current_field != field_number)
 551                 cx231xx_reset_video_buffer(dev, dma_q);
 552
 553         /* get the buffer pointer */
 554         if (dev->USE_ISO)
 555                 buf = dev->video_mode.isoc_ctl.buf;
 556         else
 557                 buf = dev->video_mode.bulk_ctl.buf;
 558
 559         /* Remember the field number for next time */
 560         dma_q->current_field = field_number;
 561
 562         bytes_to_copy = dma_q->bytes_left_in_line;
 563         if (bytes_to_copy > length)
 564                 bytes_to_copy = length;
 565
 566         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 567                 dma_q->bytes_left_in_line -= bytes_to_copy;
 568                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 569                                           0 : 1;
 570                 return 0;
 571         }
 572
 573         dma_q->is_partial_line = 1;
 574
 575         /* If we don't have a buffer, just return the number of bytes we would
 576            have copied if we had a buffer. */
 577         if (!buf) {
 578                 dma_q->bytes_left_in_line -= bytes_to_copy;
 579                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 580                                          ? 0 : 1;
 581                 return bytes_to_copy;
 582         }
 583
 584         /* copy the data to video buffer */
 585         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 586
 587         dma_q->pos += bytes_to_copy;
 588         dma_q->bytes_left_in_line -= bytes_to_copy;
 589
 590         if (dma_q->bytes_left_in_line == 0) {
 591                 dma_q->bytes_left_in_line = _line_size;
 592                 dma_q->lines_completed++;
 593                 dma_q->is_partial_line = 0;
 594
 595                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 596                         buffer_filled(dev, dma_q, buf);
 597
 598                         dma_q->pos = 0;
 599                         buf = NULL;
 600                         dma_q->lines_completed = 0;
 601                 }
 602         }
 603
 604         return bytes_to_copy;
 605 }
 606
 607 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 608                                 struct cx231xx_dmaqueue *dma_q)
 609 {
 610         struct cx231xx_buffer *buf;
 611
 612         /* handle the switch from field 1 to field 2 */
 613         if (dma_q->current_field == 1) {
 614                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 615                         dma_q->field1_done = 1;
 616                 else
 617                         dma_q->field1_done = 0;
 618         }
 619
 620         if (dev->USE_ISO)
 621                 buf = dev->video_mode.isoc_ctl.buf;
 622         else
 623                 buf = dev->video_mode.bulk_ctl.buf;
 624
 625         if (buf == NULL) {
 626                 /* first try to get the buffer */
 627                 get_next_buf(dma_q, &buf);
 628
 629                 dma_q->pos = 0;
 630                 dma_q->field1_done = 0;
 631                 dma_q->current_field = -1;
 632         }
 633
 634         /* reset the counters */
 635         dma_q->bytes_left_in_line = dev->width << 1;
 636         dma_q->lines_completed = 0;
 637 }
 638
 639 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 640                     u8 *p_buffer, u32 bytes_to_copy)
 641 {
 642         u8 *p_out_buffer = NULL;
 643         u32 current_line_bytes_copied = 0;
 644         struct cx231xx_buffer *buf;
 645         u32 _line_size = dev->width << 1;
 646         void *startwrite;
 647         int offset, lencopy;
 648
 649         if (dev->USE_ISO)
 650                 buf = dev->video_mode.isoc_ctl.buf;
 651         else
 652                 buf = dev->video_mode.bulk_ctl.buf;
 653
 654         if (buf == NULL)
 655                 return -1;
 656
 657         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 658
 659         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 660
 661         /* Offset field 2 one line from the top of the buffer */
 662         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 663
 664         /* Offset for field 2 */
 665         startwrite = p_out_buffer + offset;
 666
 667         /* lines already completed in the current field */
 668         startwrite += (dma_q->lines_completed * _line_size * 2);
 669
 670         /* bytes already completed in the current line */
 671         startwrite += current_line_bytes_copied;
 672
 673         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 674                   bytes_to_copy : dma_q->bytes_left_in_line;
 675
 676         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 677                 return 0;
 678
 679         /* The below copies the UYVY data straight into video buffer */
 680         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 681
 682         return 0;
 683 }
 684
 685 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 686 {
 687         u16 i;
 688
 689         if (len <= 0)
 690                 return;
 691
 692         for (i = 0; i < len / 2; i++)
 693                 to[i] = (from[i] << 8) | (from[i] >> 8);
 694 }
 695
 696 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 697 {
 698         u8 buffer_complete = 0;
 699
 700         /* Dual field stream */
 701         buffer_complete = ((dma_q->current_field == 2) &&
 702                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 703                             dma_q->field1_done);
 704
 705         return buffer_complete;
 706 }
 707
 708 /* ------------------------------------------------------------------
 709         Videobuf operations
 710    ------------------------------------------------------------------*/
 711
 712 static int
 713 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 714 {
 715         struct cx231xx_fh *fh = vq->priv_data;
 716         struct cx231xx *dev = fh->dev;
 717
 718         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 719         if (0 == *count)
 720                 *count = CX231XX_DEF_BUF;
 721
 722         if (*count < CX231XX_MIN_BUF)
 723                 *count = CX231XX_MIN_BUF;
 724
 725
 726         cx231xx_enable_analog_tuner(dev);
 727
 728         return 0;
 729 }
 730
 731 /* This is called *without* dev->slock held; please keep it that way */
 732 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 733 {
 734         struct cx231xx_fh *fh = vq->priv_data;
 735         struct cx231xx *dev = fh->dev;
 736         unsigned long flags = 0;
 737
 738         BUG_ON(in_interrupt());
 739
 740         /* We used to wait for the buffer to finish here, but this didn't work
 741            because, as we were keeping the state as VIDEOBUF_QUEUED,
 742            videobuf_queue_cancel marked it as finished for us.
 743            (Also, it could wedge forever if the hardware was misconfigured.)
 744
 745            This should be safe; by the time we get here, the buffer isn't
 746            queued anymore. If we ever start marking the buffers as
 747            VIDEOBUF_ACTIVE, it won't be, though.
 748          */
 749         spin_lock_irqsave(&dev->video_mode.slock, flags);
 750         if (dev->USE_ISO) {
 751                 if (dev->video_mode.isoc_ctl.buf == buf)
 752                         dev->video_mode.isoc_ctl.buf = NULL;
 753         } else {
 754                 if (dev->video_mode.bulk_ctl.buf == buf)
 755                         dev->video_mode.bulk_ctl.buf = NULL;
 756         }
 757         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 758
 759         videobuf_vmalloc_free(&buf->vb);
 760         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 761 }
 762
 763 static int
 764 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 765                enum v4l2_field field)
 766 {
 767         struct cx231xx_fh *fh = vq->priv_data;
 768         struct cx231xx_buffer *buf =
 769             container_of(vb, struct cx231xx_buffer, vb);
 770         struct cx231xx *dev = fh->dev;
 771         int rc = 0, urb_init = 0;
 772
 773         /* The only currently supported format is 16 bits/pixel */
 774         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 775                         + 7) >> 3;
 776         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 777                 return -EINVAL;
 778
 779         buf->vb.width = dev->width;
 780         buf->vb.height = dev->height;
 781         buf->vb.field = field;
 782
 783         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 784                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 785                 if (rc < 0)
 786                         goto fail;
 787         }
 788
 789         if (dev->USE_ISO) {
 790                 if (!dev->video_mode.isoc_ctl.num_bufs)
 791                         urb_init = 1;
 792         } else {
 793                 if (!dev->video_mode.bulk_ctl.num_bufs)
 794                         urb_init = 1;
 795         }
 796         dev_dbg(dev->dev,
 797                 "urb_init=%d dev->video_mode.max_pkt_size=%d\n",
 798                 urb_init, dev->video_mode.max_pkt_size);
 799         if (urb_init) {
 800                 dev->mode_tv = 0;
 801                 if (dev->USE_ISO)
 802                         rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 803                                        CX231XX_NUM_BUFS,
 804                                        dev->video_mode.max_pkt_size,
 805                                        cx231xx_isoc_copy);
 806                 else
 807                         rc = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,
 808                                        CX231XX_NUM_BUFS,
 809                                        dev->video_mode.max_pkt_size,
 810                                        cx231xx_bulk_copy);
 811                 if (rc < 0)
 812                         goto fail;
 813         }
 814
 815         buf->vb.state = VIDEOBUF_PREPARED;
 816
 817         return 0;
 818
 819 fail:
 820         free_buffer(vq, buf);
 821         return rc;
 822 }
 823
 824 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 825 {
 826         struct cx231xx_buffer *buf =
 827             container_of(vb, struct cx231xx_buffer, vb);
 828         struct cx231xx_fh *fh = vq->priv_data;
 829         struct cx231xx *dev = fh->dev;
 830         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 831
 832         buf->vb.state = VIDEOBUF_QUEUED;
 833         list_add_tail(&buf->vb.queue, &vidq->active);
 834
 835 }
 836
 837 static void buffer_release(struct videobuf_queue *vq,
 838                            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 = (struct cx231xx *)fh->dev;
 844
 845         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 846
 847         free_buffer(vq, buf);
 848 }
 849
 850 static const struct videobuf_queue_ops cx231xx_video_qops = {
 851         .buf_setup = buffer_setup,
 852         .buf_prepare = buffer_prepare,
 853         .buf_queue = buffer_queue,
 854         .buf_release = buffer_release,
 855 };
 856
 857 /*********************  v4l2 interface  **************************************/
 858
 859 void video_mux(struct cx231xx *dev, int index)
 860 {
 861         dev->video_input = index;
 862         dev->ctl_ainput = INPUT(index)->amux;
 863
 864         cx231xx_set_video_input_mux(dev, index);
 865
 866         cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);
 867
 868         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 869
 870         dev_dbg(dev->dev, "video_mux : %d\n", index);
 871
 872         /* do mode control overrides if required */
 873         cx231xx_do_mode_ctrl_overrides(dev);
 874 }
 875
 876 /* Usage lock check functions */
 877 static int res_get(struct cx231xx_fh *fh)
 878 {
 879         struct cx231xx *dev = fh->dev;
 880         int rc = 0;
 881
 882         /* This instance already has stream_on */
 883         if (fh->stream_on)
 884                 return rc;
 885
 886         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 887                 if (dev->stream_on)
 888                         return -EBUSY;
 889                 dev->stream_on = 1;
 890         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 891                 if (dev->vbi_stream_on)
 892                         return -EBUSY;
 893                 dev->vbi_stream_on = 1;
 894         } else
 895                 return -EINVAL;
 896
 897         fh->stream_on = 1;
 898
 899         return rc;
 900 }
 901
 902 static int res_check(struct cx231xx_fh *fh)
 903 {
 904         return fh->stream_on;
 905 }
 906
 907 static void res_free(struct cx231xx_fh *fh)
 908 {
 909         struct cx231xx *dev = fh->dev;
 910
 911         fh->stream_on = 0;
 912
 913         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 914                 dev->stream_on = 0;
 915         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 916                 dev->vbi_stream_on = 0;
 917 }
 918
 919 static int check_dev(struct cx231xx *dev)
 920 {
 921         if (dev->state & DEV_DISCONNECTED) {
 922                 dev_err(dev->dev, "v4l2 ioctl: device not present\n");
 923                 return -ENODEV;
 924         }
 925         return 0;
 926 }
 927
 928 /* ------------------------------------------------------------------
 929         IOCTL vidioc handling
 930    ------------------------------------------------------------------*/
 931
 932 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 933                                 struct v4l2_format *f)
 934 {
 935         struct cx231xx_fh *fh = priv;
 936         struct cx231xx *dev = fh->dev;
 937
 938         f->fmt.pix.width = dev->width;
 939         f->fmt.pix.height = dev->height;
 940         f->fmt.pix.pixelformat = dev->format->fourcc;
 941         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;
 942         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 943         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 944
 945         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 946
 947         return 0;
 948 }
 949
 950 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 951 {
 952         unsigned int i;
 953
 954         for (i = 0; i < ARRAY_SIZE(format); i++)
 955                 if (format[i].fourcc == fourcc)
 956                         return &format[i];
 957
 958         return NULL;
 959 }
 960
 961 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 962                                   struct v4l2_format *f)
 963 {
 964         struct cx231xx_fh *fh = priv;
 965         struct cx231xx *dev = fh->dev;
 966         unsigned int width = f->fmt.pix.width;
 967         unsigned int height = f->fmt.pix.height;
 968         unsigned int maxw = norm_maxw(dev);
 969         unsigned int maxh = norm_maxh(dev);
 970         struct cx231xx_fmt *fmt;
 971
 972         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 973         if (!fmt) {
 974                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 975                                  f->fmt.pix.pixelformat);
 976                 return -EINVAL;
 977         }
 978
 979         /* width must even because of the YUYV format
 980            height must be even because of interlacing */
 981         v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);
 982
 983         f->fmt.pix.width = width;
 984         f->fmt.pix.height = height;
 985         f->fmt.pix.pixelformat = fmt->fourcc;
 986         f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;
 987         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 988         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 989         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 990
 991         return 0;
 992 }
 993
 994 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 995                                 struct v4l2_format *f)
 996 {
 997         struct cx231xx_fh *fh = priv;
 998         struct cx231xx *dev = fh->dev;
 999         int rc;
1000         struct cx231xx_fmt *fmt;
1001         struct v4l2_subdev_format format = {
1002                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1003         };
1004
1005         rc = check_dev(dev);
1006         if (rc < 0)
1007                 return rc;
1008
1009         vidioc_try_fmt_vid_cap(file, priv, f);
1010
1011         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1012         if (!fmt)
1013                 return -EINVAL;
1014
1015         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1016                 dev_err(dev->dev, "%s: queue busy\n", __func__);
1017                 return -EBUSY;
1018         }
1019
1020         if (dev->stream_on && !fh->stream_on) {
1021                 dev_err(dev->dev,
1022                         "%s: device in use by another fh\n", __func__);
1023                 return -EBUSY;
1024         }
1025
1026         /* set new image size */
1027         dev->width = f->fmt.pix.width;
1028         dev->height = f->fmt.pix.height;
1029         dev->format = fmt;
1030
1031         v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);
1032         call_all(dev, pad, set_fmt, NULL, &format);
1033         v4l2_fill_pix_format(&f->fmt.pix, &format.format);
1034
1035         return rc;
1036 }
1037
1038 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
1039 {
1040         struct cx231xx_fh *fh = priv;
1041         struct cx231xx *dev = fh->dev;
1042
1043         *id = dev->norm;
1044         return 0;
1045 }
1046
1047 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1048 {
1049         struct cx231xx_fh *fh = priv;
1050         struct cx231xx *dev = fh->dev;
1051         struct v4l2_subdev_format format = {
1052                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1053         };
1054         int rc;
1055
1056         rc = check_dev(dev);
1057         if (rc < 0)
1058                 return rc;
1059
1060         if (dev->norm == norm)
1061                 return 0;
1062
1063         if (videobuf_queue_is_busy(&fh->vb_vidq))
1064                 return -EBUSY;
1065
1066         dev->norm = norm;
1067
1068         /* Adjusts width/height, if needed */
1069         dev->width = 720;
1070         dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;
1071
1072         call_all(dev, video, s_std, dev->norm);
1073
1074         /* We need to reset basic properties in the decoder related to
1075            resolution (since a standard change effects things like the number
1076            of lines in VACT, etc) */
1077         format.format.code = MEDIA_BUS_FMT_FIXED;
1078         format.format.width = dev->width;
1079         format.format.height = dev->height;
1080         call_all(dev, pad, set_fmt, NULL, &format);
1081
1082         /* do mode control overrides */
1083         cx231xx_do_mode_ctrl_overrides(dev);
1084
1085         return 0;
1086 }
1087
1088 static const char *iname[] = {
1089         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1090         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1091         [CX231XX_VMUX_TELEVISION] = "Television",
1092         [CX231XX_VMUX_CABLE]      = "Cable TV",
1093         [CX231XX_VMUX_DVB]        = "DVB",
1094 };
1095
1096 void cx231xx_v4l2_create_entities(struct cx231xx *dev)
1097 {
1098 #if defined(CONFIG_MEDIA_CONTROLLER)
1099         int ret, i;
1100
1101         /* Create entities for each input connector */
1102         for (i = 0; i < MAX_CX231XX_INPUT; i++) {
1103                 struct media_entity *ent = &dev->input_ent[i];
1104
1105                 if (!INPUT(i)->type)
1106                         break;
1107
1108                 ent->name = iname[INPUT(i)->type];
1109                 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1110                 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1111
1112                 switch (INPUT(i)->type) {
1113                 case CX231XX_VMUX_COMPOSITE1:
1114                         ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1115                         break;
1116                 case CX231XX_VMUX_SVIDEO:
1117                         ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1118                         break;
1119                 case CX231XX_VMUX_TELEVISION:
1120                 case CX231XX_VMUX_CABLE:
1121                 case CX231XX_VMUX_DVB:
1122                         /* The DVB core will handle it */
1123                         if (dev->tuner_type == TUNER_ABSENT)
1124                                 continue;
1125                         /* fall through */
1126                 default: /* just to shut up a gcc warning */
1127                         ent->function = MEDIA_ENT_F_CONN_RF;
1128                         break;
1129                 }
1130
1131                 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1132                 if (ret < 0)
1133                         pr_err("failed to initialize input pad[%d]!\n", i);
1134
1135                 ret = media_device_register_entity(dev->media_dev, ent);
1136                 if (ret < 0)
1137                         pr_err("failed to register input entity %d!\n", i);
1138         }
1139 #endif
1140 }
1141
1142 int cx231xx_enum_input(struct file *file, void *priv,
1143                              struct v4l2_input *i)
1144 {
1145         struct cx231xx_fh *fh = priv;
1146         struct cx231xx *dev = fh->dev;
1147         u32 gen_stat;
1148         unsigned int n;
1149         int ret;
1150
1151         n = i->index;
1152         if (n >= MAX_CX231XX_INPUT)
1153                 return -EINVAL;
1154         if (0 == INPUT(n)->type)
1155                 return -EINVAL;
1156
1157         i->index = n;
1158         i->type = V4L2_INPUT_TYPE_CAMERA;
1159
1160         strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name));
1161
1162         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1163             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1164                 i->type = V4L2_INPUT_TYPE_TUNER;
1165
1166         i->std = dev->vdev.tvnorms;
1167
1168         /* If they are asking about the active input, read signal status */
1169         if (n == dev->video_input) {
1170                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1171                                             GEN_STAT, 2, &gen_stat, 4);
1172                 if (ret > 0) {
1173                         if ((gen_stat & FLD_VPRES) == 0x00)
1174                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
1175                         if ((gen_stat & FLD_HLOCK) == 0x00)
1176                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
1177                 }
1178         }
1179
1180         return 0;
1181 }
1182
1183 int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)
1184 {
1185         struct cx231xx_fh *fh = priv;
1186         struct cx231xx *dev = fh->dev;
1187
1188         *i = dev->video_input;
1189
1190         return 0;
1191 }
1192
1193 int cx231xx_s_input(struct file *file, void *priv, unsigned int i)
1194 {
1195         struct cx231xx_fh *fh = priv;
1196         struct cx231xx *dev = fh->dev;
1197         int rc;
1198
1199         dev->mode_tv = 0;
1200         rc = check_dev(dev);
1201         if (rc < 0)
1202                 return rc;
1203
1204         if (i >= MAX_CX231XX_INPUT)
1205                 return -EINVAL;
1206         if (0 == INPUT(i)->type)
1207                 return -EINVAL;
1208
1209         video_mux(dev, i);
1210
1211         if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||
1212             INPUT(i)->type == CX231XX_VMUX_CABLE) {
1213                 /* There's a tuner, so reset the standard and put it on the
1214                    last known frequency (since it was probably powered down
1215                    until now */
1216                 call_all(dev, video, s_std, dev->norm);
1217         }
1218
1219         return 0;
1220 }
1221
1222 int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1223 {
1224         struct cx231xx_fh *fh = priv;
1225         struct cx231xx *dev = fh->dev;
1226         int rc;
1227
1228         rc = check_dev(dev);
1229         if (rc < 0)
1230                 return rc;
1231
1232         if (0 != t->index)
1233                 return -EINVAL;
1234
1235         strscpy(t->name, "Tuner", sizeof(t->name));
1236
1237         t->type = V4L2_TUNER_ANALOG_TV;
1238         t->capability = V4L2_TUNER_CAP_NORM;
1239         t->rangehigh = 0xffffffffUL;
1240         t->signal = 0xffff;     /* LOCKED */
1241         call_all(dev, tuner, g_tuner, t);
1242
1243         return 0;
1244 }
1245
1246 int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1247 {
1248         struct cx231xx_fh *fh = priv;
1249         struct cx231xx *dev = fh->dev;
1250         int rc;
1251
1252         rc = check_dev(dev);
1253         if (rc < 0)
1254                 return rc;
1255
1256         if (0 != t->index)
1257                 return -EINVAL;
1258 #if 0
1259         call_all(dev, tuner, s_tuner, t);
1260 #endif
1261         return 0;
1262 }
1263
1264 int cx231xx_g_frequency(struct file *file, void *priv,
1265                               struct v4l2_frequency *f)
1266 {
1267         struct cx231xx_fh *fh = priv;
1268         struct cx231xx *dev = fh->dev;
1269
1270         if (f->tuner)
1271                 return -EINVAL;
1272
1273         f->frequency = dev->ctl_freq;
1274
1275         return 0;
1276 }
1277
1278 int cx231xx_s_frequency(struct file *file, void *priv,
1279                               const struct v4l2_frequency *f)
1280 {
1281         struct cx231xx_fh *fh = priv;
1282         struct cx231xx *dev = fh->dev;
1283         struct v4l2_frequency new_freq = *f;
1284         int rc;
1285         u32 if_frequency = 5400000;
1286
1287         dev_dbg(dev->dev,
1288                 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",
1289                 f->frequency, f->type);
1290
1291         rc = check_dev(dev);
1292         if (rc < 0)
1293                 return rc;
1294
1295         if (0 != f->tuner)
1296                 return -EINVAL;
1297
1298         /* set pre channel change settings in DIF first */
1299         rc = cx231xx_tuner_pre_channel_change(dev);
1300
1301         call_all(dev, tuner, s_frequency, f);
1302         call_all(dev, tuner, g_frequency, &new_freq);
1303         dev->ctl_freq = new_freq.frequency;
1304
1305         /* set post channel change settings in DIF first */
1306         rc = cx231xx_tuner_post_channel_change(dev);
1307
1308         if (dev->tuner_type == TUNER_NXP_TDA18271) {
1309                 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))
1310                         if_frequency = 5400000;  /*5.4MHz       */
1311                 else if (dev->norm & V4L2_STD_B)
1312                         if_frequency = 6000000;  /*6.0MHz       */
1313                 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))
1314                         if_frequency = 6900000;  /*6.9MHz       */
1315                 else if (dev->norm & V4L2_STD_GH)
1316                         if_frequency = 7100000;  /*7.1MHz       */
1317                 else if (dev->norm & V4L2_STD_PAL_I)
1318                         if_frequency = 7250000;  /*7.25MHz      */
1319                 else if (dev->norm & V4L2_STD_SECAM_L)
1320                         if_frequency = 6900000;  /*6.9MHz       */
1321                 else if (dev->norm & V4L2_STD_SECAM_LC)
1322                         if_frequency = 1250000;  /*1.25MHz      */
1323
1324                 dev_dbg(dev->dev,
1325                         "if_frequency is set to %d\n", if_frequency);
1326                 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);
1327
1328                 update_HH_register_after_set_DIF(dev);
1329         }
1330
1331         dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);
1332
1333         return rc;
1334 }
1335
1336 #ifdef CONFIG_VIDEO_ADV_DEBUG
1337
1338 int cx231xx_g_chip_info(struct file *file, void *fh,
1339                         struct v4l2_dbg_chip_info *chip)
1340 {
1341         switch (chip->match.addr) {
1342         case 0: /* Cx231xx - internal registers */
1343                 return 0;
1344         case 1: /* AFE - read byte */
1345                 strscpy(chip->name, "AFE (byte)", sizeof(chip->name));
1346                 return 0;
1347         case 2: /* Video Block - read byte */
1348                 strscpy(chip->name, "Video (byte)", sizeof(chip->name));
1349                 return 0;
1350         case 3: /* I2S block - read byte */
1351                 strscpy(chip->name, "I2S (byte)", sizeof(chip->name));
1352                 return 0;
1353         case 4: /* AFE - read dword */
1354                 strscpy(chip->name, "AFE (dword)", sizeof(chip->name));
1355                 return 0;
1356         case 5: /* Video Block - read dword */
1357                 strscpy(chip->name, "Video (dword)", sizeof(chip->name));
1358                 return 0;
1359         case 6: /* I2S Block - read dword */
1360                 strscpy(chip->name, "I2S (dword)", sizeof(chip->name));
1361                 return 0;
1362         }
1363         return -EINVAL;
1364 }
1365
1366 int cx231xx_g_register(struct file *file, void *priv,
1367                              struct v4l2_dbg_register *reg)
1368 {
1369         struct cx231xx_fh *fh = priv;
1370         struct cx231xx *dev = fh->dev;
1371         int ret;
1372         u8 value[4] = { 0, 0, 0, 0 };
1373         u32 data = 0;
1374
1375         switch (reg->match.addr) {
1376         case 0: /* Cx231xx - internal registers */
1377                 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1378                                 (u16)reg->reg, value, 4);
1379                 reg->val = value[0] | value[1] << 8 |
1380                         value[2] << 16 | (u32)value[3] << 24;
1381                 reg->size = 4;
1382                 break;
1383         case 1: /* AFE - read byte */
1384                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1385                                 (u16)reg->reg, 2, &data, 1);
1386                 reg->val = data;
1387                 reg->size = 1;
1388                 break;
1389         case 2: /* Video Block - read byte */
1390                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1391                                 (u16)reg->reg, 2, &data, 1);
1392                 reg->val = data;
1393                 reg->size = 1;
1394                 break;
1395         case 3: /* I2S block - read byte */
1396                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1397                                 (u16)reg->reg, 1, &data, 1);
1398                 reg->val = data;
1399                 reg->size = 1;
1400                 break;
1401         case 4: /* AFE - read dword */
1402                 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,
1403                                 (u16)reg->reg, 2, &data, 4);
1404                 reg->val = data;
1405                 reg->size = 4;
1406                 break;
1407         case 5: /* Video Block - read dword */
1408                 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1409                                 (u16)reg->reg, 2, &data, 4);
1410                 reg->val = data;
1411                 reg->size = 4;
1412                 break;
1413         case 6: /* I2S Block - read dword */
1414                 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1415                                 (u16)reg->reg, 1, &data, 4);
1416                 reg->val = data;
1417                 reg->size = 4;
1418                 break;
1419         default:
1420                 return -EINVAL;
1421         }
1422         return ret < 0 ? ret : 0;
1423 }
1424
1425 int cx231xx_s_register(struct file *file, void *priv,
1426                              const struct v4l2_dbg_register *reg)
1427 {
1428         struct cx231xx_fh *fh = priv;
1429         struct cx231xx *dev = fh->dev;
1430         int ret;
1431         u8 data[4] = { 0, 0, 0, 0 };
1432
1433         switch (reg->match.addr) {
1434         case 0: /* cx231xx internal registers */
1435                 data[0] = (u8) reg->val;
1436                 data[1] = (u8) (reg->val >> 8);
1437                 data[2] = (u8) (reg->val >> 16);
1438                 data[3] = (u8) (reg->val >> 24);
1439                 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
1440                                 (u16)reg->reg, data, 4);
1441                 break;
1442         case 1: /* AFE - write byte */
1443                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1444                                 (u16)reg->reg, 2, reg->val, 1);
1445                 break;
1446         case 2: /* Video Block - write byte */
1447                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1448                                 (u16)reg->reg, 2, reg->val, 1);
1449                 break;
1450         case 3: /* I2S block - write byte */
1451                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1452                                 (u16)reg->reg, 1, reg->val, 1);
1453                 break;
1454         case 4: /* AFE - write dword */
1455                 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,
1456                                 (u16)reg->reg, 2, reg->val, 4);
1457                 break;
1458         case 5: /* Video Block - write dword */
1459                 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,
1460                                 (u16)reg->reg, 2, reg->val, 4);
1461                 break;
1462         case 6: /* I2S block - write dword */
1463                 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,
1464                                 (u16)reg->reg, 1, reg->val, 4);
1465                 break;
1466         default:
1467                 return -EINVAL;
1468         }
1469         return ret < 0 ? ret : 0;
1470 }
1471 #endif
1472
1473 static int vidioc_g_pixelaspect(struct file *file, void *priv,
1474                                 int type, struct v4l2_fract *f)
1475 {
1476         struct cx231xx_fh *fh = priv;
1477         struct cx231xx *dev = fh->dev;
1478         bool is_50hz = dev->norm & V4L2_STD_625_50;
1479
1480         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1481                 return -EINVAL;
1482
1483         f->numerator = is_50hz ? 54 : 11;
1484         f->denominator = is_50hz ? 59 : 10;
1485
1486         return 0;
1487 }
1488
1489 static int vidioc_g_selection(struct file *file, void *priv,
1490                               struct v4l2_selection *s)
1491 {
1492         struct cx231xx_fh *fh = priv;
1493         struct cx231xx *dev = fh->dev;
1494
1495         if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1496                 return -EINVAL;
1497
1498         switch (s->target) {
1499         case V4L2_SEL_TGT_CROP_BOUNDS:
1500         case V4L2_SEL_TGT_CROP_DEFAULT:
1501                 s->r.left = 0;
1502                 s->r.top = 0;
1503                 s->r.width = dev->width;
1504                 s->r.height = dev->height;
1505                 break;
1506         default:
1507                 return -EINVAL;
1508         }
1509         return 0;
1510 }
1511
1512 static int vidioc_streamon(struct file *file, void *priv,
1513                            enum v4l2_buf_type type)
1514 {
1515         struct cx231xx_fh *fh = priv;
1516         struct cx231xx *dev = fh->dev;
1517         int rc;
1518
1519         rc = check_dev(dev);
1520         if (rc < 0)
1521                 return rc;
1522
1523         rc = res_get(fh);
1524
1525         if (likely(rc >= 0))
1526                 rc = videobuf_streamon(&fh->vb_vidq);
1527
1528         call_all(dev, video, s_stream, 1);
1529
1530         return rc;
1531 }
1532
1533 static int vidioc_streamoff(struct file *file, void *priv,
1534                             enum v4l2_buf_type type)
1535 {
1536         struct cx231xx_fh *fh = priv;
1537         struct cx231xx *dev = fh->dev;
1538         int rc;
1539
1540         rc = check_dev(dev);
1541         if (rc < 0)
1542                 return rc;
1543
1544         if (type != fh->type)
1545                 return -EINVAL;
1546
1547         cx25840_call(dev, video, s_stream, 0);
1548
1549         videobuf_streamoff(&fh->vb_vidq);
1550         res_free(fh);
1551
1552         return 0;
1553 }
1554
1555 int cx231xx_querycap(struct file *file, void *priv,
1556                            struct v4l2_capability *cap)
1557 {
1558         struct video_device *vdev = video_devdata(file);
1559         struct cx231xx_fh *fh = priv;
1560         struct cx231xx *dev = fh->dev;
1561
1562         strscpy(cap->driver, "cx231xx", sizeof(cap->driver));
1563         strscpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1564         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1565
1566         if (vdev->vfl_type == VFL_TYPE_RADIO)
1567                 cap->device_caps = V4L2_CAP_RADIO;
1568         else {
1569                 cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1570                 if (vdev->vfl_type == VFL_TYPE_VBI)
1571                         cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1572                 else
1573                         cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1574         }
1575         if (dev->tuner_type != TUNER_ABSENT)
1576                 cap->device_caps |= V4L2_CAP_TUNER;
1577         cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
1578                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1579                 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
1580         if (video_is_registered(&dev->radio_dev))
1581                 cap->capabilities |= V4L2_CAP_RADIO;
1582
1583         return 0;
1584 }
1585
1586 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1587                                    struct v4l2_fmtdesc *f)
1588 {
1589         if (unlikely(f->index >= ARRAY_SIZE(format)))
1590                 return -EINVAL;
1591
1592         strscpy(f->description, format[f->index].name, sizeof(f->description));
1593         f->pixelformat = format[f->index].fourcc;
1594
1595         return 0;
1596 }
1597
1598 /* RAW VBI ioctls */
1599
1600 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1601                                 struct v4l2_format *f)
1602 {
1603         struct cx231xx_fh *fh = priv;
1604         struct cx231xx *dev = fh->dev;
1605
1606         f->fmt.vbi.sampling_rate = 6750000 * 4;
1607         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1608         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1609         f->fmt.vbi.offset = 0;
1610         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1611             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1612         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1613             PAL_VBI_LINES : NTSC_VBI_LINES;
1614         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1615             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1616         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1617         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1618
1619         return 0;
1620
1621 }
1622
1623 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1624                                   struct v4l2_format *f)
1625 {
1626         struct cx231xx_fh *fh = priv;
1627         struct cx231xx *dev = fh->dev;
1628
1629         f->fmt.vbi.sampling_rate = 6750000 * 4;
1630         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1631         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1632         f->fmt.vbi.offset = 0;
1633         f->fmt.vbi.flags = 0;
1634         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1635             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1636         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1637             PAL_VBI_LINES : NTSC_VBI_LINES;
1638         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1639             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1640         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1641         memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1642
1643         return 0;
1644
1645 }
1646
1647 static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
1648                                   struct v4l2_format *f)
1649 {
1650         struct cx231xx_fh *fh = priv;
1651         struct cx231xx *dev = fh->dev;
1652
1653         if (dev->vbi_stream_on && !fh->stream_on) {
1654                 dev_err(dev->dev,
1655                         "%s device in use by another fh\n", __func__);
1656                 return -EBUSY;
1657         }
1658         return vidioc_try_fmt_vbi_cap(file, priv, f);
1659 }
1660
1661 static int vidioc_reqbufs(struct file *file, void *priv,
1662                           struct v4l2_requestbuffers *rb)
1663 {
1664         struct cx231xx_fh *fh = priv;
1665         struct cx231xx *dev = fh->dev;
1666         int rc;
1667
1668         rc = check_dev(dev);
1669         if (rc < 0)
1670                 return rc;
1671
1672         return videobuf_reqbufs(&fh->vb_vidq, rb);
1673 }
1674
1675 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1676 {
1677         struct cx231xx_fh *fh = priv;
1678         struct cx231xx *dev = fh->dev;
1679         int rc;
1680
1681         rc = check_dev(dev);
1682         if (rc < 0)
1683                 return rc;
1684
1685         return videobuf_querybuf(&fh->vb_vidq, b);
1686 }
1687
1688 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1689 {
1690         struct cx231xx_fh *fh = priv;
1691         struct cx231xx *dev = fh->dev;
1692         int rc;
1693
1694         rc = check_dev(dev);
1695         if (rc < 0)
1696                 return rc;
1697
1698         return videobuf_qbuf(&fh->vb_vidq, b);
1699 }
1700
1701 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1702 {
1703         struct cx231xx_fh *fh = priv;
1704         struct cx231xx *dev = fh->dev;
1705         int rc;
1706
1707         rc = check_dev(dev);
1708         if (rc < 0)
1709                 return rc;
1710
1711         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1712 }
1713
1714 /* ----------------------------------------------------------- */
1715 /* RADIO ESPECIFIC IOCTLS                                      */
1716 /* ----------------------------------------------------------- */
1717
1718 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1719 {
1720         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1721
1722         if (t->index)
1723                 return -EINVAL;
1724
1725         strscpy(t->name, "Radio", sizeof(t->name));
1726
1727         call_all(dev, tuner, g_tuner, t);
1728
1729         return 0;
1730 }
1731 static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)
1732 {
1733         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1734
1735         if (t->index)
1736                 return -EINVAL;
1737
1738         call_all(dev, tuner, s_tuner, t);
1739
1740         return 0;
1741 }
1742
1743 /*
1744  * cx231xx_v4l2_open()
1745  * inits the device and starts isoc transfer
1746  */
1747 static int cx231xx_v4l2_open(struct file *filp)
1748 {
1749         int radio = 0;
1750         struct video_device *vdev = video_devdata(filp);
1751         struct cx231xx *dev = video_drvdata(filp);
1752         struct cx231xx_fh *fh;
1753         enum v4l2_buf_type fh_type = 0;
1754
1755         switch (vdev->vfl_type) {
1756         case VFL_TYPE_GRABBER:
1757                 fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1758                 break;
1759         case VFL_TYPE_VBI:
1760                 fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
1761                 break;
1762         case VFL_TYPE_RADIO:
1763                 radio = 1;
1764                 break;
1765         default:
1766                 return -EINVAL;
1767         }
1768
1769         cx231xx_videodbg("open dev=%s type=%s users=%d\n",
1770                          video_device_node_name(vdev), v4l2_type_names[fh_type],
1771                          dev->users);
1772
1773 #if 0
1774         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1775         if (errCode < 0) {
1776                 dev_err(dev->dev,
1777                         "Device locked on digital mode. Can't open analog\n");
1778                 return -EBUSY;
1779         }
1780 #endif
1781
1782         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1783         if (!fh)
1784                 return -ENOMEM;
1785         if (mutex_lock_interruptible(&dev->lock)) {
1786                 kfree(fh);
1787                 return -ERESTARTSYS;
1788         }
1789         fh->dev = dev;
1790         fh->type = fh_type;
1791         filp->private_data = fh;
1792         v4l2_fh_init(&fh->fh, vdev);
1793
1794         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1795                 /* Power up in Analog TV mode */
1796                 if (dev->board.external_av)
1797                         cx231xx_set_power_mode(dev,
1798                                  POLARIS_AVMODE_ENXTERNAL_AV);
1799                 else
1800                         cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1801
1802 #if 0
1803                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1804 #endif
1805
1806                 /* set video alternate setting */
1807                 cx231xx_set_video_alternate(dev);
1808
1809                 /* Needed, since GPIO might have disabled power of
1810                    some i2c device */
1811                 cx231xx_config_i2c(dev);
1812
1813                 /* device needs to be initialized before isoc transfer */
1814                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1815
1816         }
1817         if (radio) {
1818                 cx231xx_videodbg("video_open: setting radio device\n");
1819
1820                 /* cx231xx_start_radio(dev); */
1821
1822                 call_all(dev, tuner, s_radio);
1823         }
1824
1825         dev->users++;
1826
1827         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1828                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
1829                                             NULL, &dev->video_mode.slock,
1830                                             fh->type, V4L2_FIELD_INTERLACED,
1831                                             sizeof(struct cx231xx_buffer),
1832                                             fh, &dev->lock);
1833         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1834                 /* Set the required alternate setting  VBI interface works in
1835                    Bulk mode only */
1836                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1837
1838                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
1839                                             NULL, &dev->vbi_mode.slock,
1840                                             fh->type, V4L2_FIELD_SEQ_TB,
1841                                             sizeof(struct cx231xx_buffer),
1842                                             fh, &dev->lock);
1843         }
1844         mutex_unlock(&dev->lock);
1845         v4l2_fh_add(&fh->fh);
1846
1847         return 0;
1848 }
1849
1850 /*
1851  * cx231xx_realease_resources()
1852  * unregisters the v4l2,i2c and usb devices
1853  * called when the device gets disconected or at module unload
1854 */
1855 void cx231xx_release_analog_resources(struct cx231xx *dev)
1856 {
1857
1858         /*FIXME: I2C IR should be disconnected */
1859
1860         if (video_is_registered(&dev->radio_dev))
1861                 video_unregister_device(&dev->radio_dev);
1862         if (video_is_registered(&dev->vbi_dev)) {
1863                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1864                         video_device_node_name(&dev->vbi_dev));
1865                 video_unregister_device(&dev->vbi_dev);
1866         }
1867         if (video_is_registered(&dev->vdev)) {
1868                 dev_info(dev->dev, "V4L2 device %s deregistered\n",
1869                         video_device_node_name(&dev->vdev));
1870
1871                 if (dev->board.has_417)
1872                         cx231xx_417_unregister(dev);
1873
1874                 video_unregister_device(&dev->vdev);
1875         }
1876         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1877         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1878 }
1879
1880 /*
1881  * cx231xx_close()
1882  * stops streaming and deallocates all resources allocated by the v4l2
1883  * calls and ioctls
1884  */
1885 static int cx231xx_close(struct file *filp)
1886 {
1887         struct cx231xx_fh *fh = filp->private_data;
1888         struct cx231xx *dev = fh->dev;
1889
1890         cx231xx_videodbg("users=%d\n", dev->users);
1891
1892         cx231xx_videodbg("users=%d\n", dev->users);
1893         if (res_check(fh))
1894                 res_free(fh);
1895
1896         /*
1897          * To workaround error number=-71 on EP0 for VideoGrabber,
1898          *       need exclude following.
1899          * FIXME: It is probably safe to remove most of these, as we're
1900          * now avoiding the alternate setting for INDEX_VANC
1901          */
1902         if (!dev->board.no_alt_vanc)
1903                 if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1904                         videobuf_stop(&fh->vb_vidq);
1905                         videobuf_mmap_free(&fh->vb_vidq);
1906
1907                         /* the device is already disconnect,
1908                            free the remaining resources */
1909                         if (dev->state & DEV_DISCONNECTED) {
1910                                 if (atomic_read(&dev->devlist_count) > 0) {
1911                                         cx231xx_release_resources(dev);
1912                                         fh->dev = NULL;
1913                                         return 0;
1914                                 }
1915                                 return 0;
1916                         }
1917
1918                         /* do this before setting alternate! */
1919                         cx231xx_uninit_vbi_isoc(dev);
1920
1921                         /* set alternate 0 */
1922                         if (!dev->vbi_or_sliced_cc_mode)
1923                                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
1924                         else
1925                                 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
1926
1927                         v4l2_fh_del(&fh->fh);
1928                         v4l2_fh_exit(&fh->fh);
1929                         kfree(fh);
1930                         dev->users--;
1931                         wake_up_interruptible(&dev->open);
1932                         return 0;
1933                 }
1934
1935         v4l2_fh_del(&fh->fh);
1936         dev->users--;
1937         if (!dev->users) {
1938                 videobuf_stop(&fh->vb_vidq);
1939                 videobuf_mmap_free(&fh->vb_vidq);
1940
1941                 /* the device is already disconnect,
1942                    free the remaining resources */
1943                 if (dev->state & DEV_DISCONNECTED) {
1944                         cx231xx_release_resources(dev);
1945                         fh->dev = NULL;
1946                         return 0;
1947                 }
1948
1949                 /* Save some power by putting tuner to sleep */
1950                 call_all(dev, tuner, standby);
1951
1952                 /* do this before setting alternate! */
1953                 if (dev->USE_ISO)
1954                         cx231xx_uninit_isoc(dev);
1955                 else
1956                         cx231xx_uninit_bulk(dev);
1957                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
1958
1959                 /* set alternate 0 */
1960                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
1961         }
1962         v4l2_fh_exit(&fh->fh);
1963         kfree(fh);
1964         wake_up_interruptible(&dev->open);
1965         return 0;
1966 }
1967
1968 static int cx231xx_v4l2_close(struct file *filp)
1969 {
1970         struct cx231xx_fh *fh = filp->private_data;
1971         struct cx231xx *dev = fh->dev;
1972         int rc;
1973
1974         mutex_lock(&dev->lock);
1975         rc = cx231xx_close(filp);
1976         mutex_unlock(&dev->lock);
1977         return rc;
1978 }
1979
1980 /*
1981  * cx231xx_v4l2_read()
1982  * will allocate buffers when called for the first time
1983  */
1984 static ssize_t
1985 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
1986                   loff_t *pos)
1987 {
1988         struct cx231xx_fh *fh = filp->private_data;
1989         struct cx231xx *dev = fh->dev;
1990         int rc;
1991
1992         rc = check_dev(dev);
1993         if (rc < 0)
1994                 return rc;
1995
1996         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1997             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
1998                 rc = res_get(fh);
1999
2000                 if (unlikely(rc < 0))
2001                         return rc;
2002
2003                 if (mutex_lock_interruptible(&dev->lock))
2004                         return -ERESTARTSYS;
2005                 rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2006                                             filp->f_flags & O_NONBLOCK);
2007                 mutex_unlock(&dev->lock);
2008                 return rc;
2009         }
2010         return 0;
2011 }
2012
2013 /*
2014  * cx231xx_v4l2_poll()
2015  * will allocate buffers when called for the first time
2016  */
2017 static __poll_t cx231xx_v4l2_poll(struct file *filp, poll_table *wait)
2018 {
2019         __poll_t req_events = poll_requested_events(wait);
2020         struct cx231xx_fh *fh = filp->private_data;
2021         struct cx231xx *dev = fh->dev;
2022         __poll_t res = 0;
2023         int rc;
2024
2025         rc = check_dev(dev);
2026         if (rc < 0)
2027                 return EPOLLERR;
2028
2029         rc = res_get(fh);
2030
2031         if (unlikely(rc < 0))
2032                 return EPOLLERR;
2033
2034         if (v4l2_event_pending(&fh->fh))
2035                 res |= EPOLLPRI;
2036         else
2037                 poll_wait(filp, &fh->fh.wait, wait);
2038
2039         if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
2040                 return res;
2041
2042         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2043             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)) {
2044                 mutex_lock(&dev->lock);
2045                 res |= videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2046                 mutex_unlock(&dev->lock);
2047                 return res;
2048         }
2049         return res | EPOLLERR;
2050 }
2051
2052 /*
2053  * cx231xx_v4l2_mmap()
2054  */
2055 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2056 {
2057         struct cx231xx_fh *fh = filp->private_data;
2058         struct cx231xx *dev = fh->dev;
2059         int rc;
2060
2061         rc = check_dev(dev);
2062         if (rc < 0)
2063                 return rc;
2064
2065         rc = res_get(fh);
2066
2067         if (unlikely(rc < 0))
2068                 return rc;
2069
2070         if (mutex_lock_interruptible(&dev->lock))
2071                 return -ERESTARTSYS;
2072         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2073         mutex_unlock(&dev->lock);
2074
2075         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2076                          (unsigned long)vma->vm_start,
2077                          (unsigned long)vma->vm_end -
2078                          (unsigned long)vma->vm_start, rc);
2079
2080         return rc;
2081 }
2082
2083 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2084         .owner   = THIS_MODULE,
2085         .open    = cx231xx_v4l2_open,
2086         .release = cx231xx_v4l2_close,
2087         .read    = cx231xx_v4l2_read,
2088         .poll    = cx231xx_v4l2_poll,
2089         .mmap    = cx231xx_v4l2_mmap,
2090         .unlocked_ioctl   = video_ioctl2,
2091 };
2092
2093 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2094         .vidioc_querycap               = cx231xx_querycap,
2095         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2096         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2097         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2098         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2099         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2100         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2101         .vidioc_s_fmt_vbi_cap          = vidioc_s_fmt_vbi_cap,
2102         .vidioc_g_pixelaspect          = vidioc_g_pixelaspect,
2103         .vidioc_g_selection            = vidioc_g_selection,
2104         .vidioc_reqbufs                = vidioc_reqbufs,
2105         .vidioc_querybuf               = vidioc_querybuf,
2106         .vidioc_qbuf                   = vidioc_qbuf,
2107         .vidioc_dqbuf                  = vidioc_dqbuf,
2108         .vidioc_s_std                  = vidioc_s_std,
2109         .vidioc_g_std                  = vidioc_g_std,
2110         .vidioc_enum_input             = cx231xx_enum_input,
2111         .vidioc_g_input                = cx231xx_g_input,
2112         .vidioc_s_input                = cx231xx_s_input,
2113         .vidioc_streamon               = vidioc_streamon,
2114         .vidioc_streamoff              = vidioc_streamoff,
2115         .vidioc_g_tuner                = cx231xx_g_tuner,
2116         .vidioc_s_tuner                = cx231xx_s_tuner,
2117         .vidioc_g_frequency            = cx231xx_g_frequency,
2118         .vidioc_s_frequency            = cx231xx_s_frequency,
2119 #ifdef CONFIG_VIDEO_ADV_DEBUG
2120         .vidioc_g_chip_info            = cx231xx_g_chip_info,
2121         .vidioc_g_register             = cx231xx_g_register,
2122         .vidioc_s_register             = cx231xx_s_register,
2123 #endif
2124         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2125         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2126 };
2127
2128 static struct video_device cx231xx_vbi_template;
2129
2130 static const struct video_device cx231xx_video_template = {
2131         .fops         = &cx231xx_v4l_fops,
2132         .release      = video_device_release_empty,
2133         .ioctl_ops    = &video_ioctl_ops,
2134         .tvnorms      = V4L2_STD_ALL,
2135 };
2136
2137 static const struct v4l2_file_operations radio_fops = {
2138         .owner   = THIS_MODULE,
2139         .open   = cx231xx_v4l2_open,
2140         .release = cx231xx_v4l2_close,
2141         .poll = v4l2_ctrl_poll,
2142         .unlocked_ioctl = video_ioctl2,
2143 };
2144
2145 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2146         .vidioc_querycap    = cx231xx_querycap,
2147         .vidioc_g_tuner     = radio_g_tuner,
2148         .vidioc_s_tuner     = radio_s_tuner,
2149         .vidioc_g_frequency = cx231xx_g_frequency,
2150         .vidioc_s_frequency = cx231xx_s_frequency,
2151 #ifdef CONFIG_VIDEO_ADV_DEBUG
2152         .vidioc_g_chip_info = cx231xx_g_chip_info,
2153         .vidioc_g_register  = cx231xx_g_register,
2154         .vidioc_s_register  = cx231xx_s_register,
2155 #endif
2156         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2157         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2158 };
2159
2160 static struct video_device cx231xx_radio_template = {
2161         .name      = "cx231xx-radio",
2162         .fops      = &radio_fops,
2163         .ioctl_ops = &radio_ioctl_ops,
2164 };
2165
2166 /******************************** usb interface ******************************/
2167
2168 static void cx231xx_vdev_init(struct cx231xx *dev,
2169                 struct video_device *vfd,
2170                 const struct video_device *template,
2171                 const char *type_name)
2172 {
2173         *vfd = *template;
2174         vfd->v4l2_dev = &dev->v4l2_dev;
2175         vfd->release = video_device_release_empty;
2176         vfd->lock = &dev->lock;
2177
2178         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2179
2180         video_set_drvdata(vfd, dev);
2181         if (dev->tuner_type == TUNER_ABSENT) {
2182                 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);
2183                 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);
2184                 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
2185                 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
2186         }
2187 }
2188
2189 int cx231xx_register_analog_devices(struct cx231xx *dev)
2190 {
2191         int ret;
2192
2193         dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);
2194
2195         /* set default norm */
2196         dev->norm = V4L2_STD_PAL;
2197         dev->width = norm_maxw(dev);
2198         dev->height = norm_maxh(dev);
2199         dev->interlaced = 0;
2200
2201         /* Analog specific initialization */
2202         dev->format = &format[0];
2203
2204         /* Set the initial input */
2205         video_mux(dev, dev->video_input);
2206
2207         call_all(dev, video, s_std, dev->norm);
2208
2209         v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);
2210         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);
2211
2212         if (dev->sd_cx25840) {
2213                 v4l2_ctrl_add_handler(&dev->ctrl_handler,
2214                                 dev->sd_cx25840->ctrl_handler, NULL, true);
2215                 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,
2216                                 dev->sd_cx25840->ctrl_handler,
2217                                 v4l2_ctrl_radio_filter, true);
2218         }
2219
2220         if (dev->ctrl_handler.error)
2221                 return dev->ctrl_handler.error;
2222         if (dev->radio_ctrl_handler.error)
2223                 return dev->radio_ctrl_handler.error;
2224
2225         /* enable vbi capturing */
2226         /* write code here...  */
2227
2228         /* allocate and fill video video_device struct */
2229         cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
2230 #if defined(CONFIG_MEDIA_CONTROLLER)
2231         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
2232         ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
2233         if (ret < 0)
2234                 dev_err(dev->dev, "failed to initialize video media entity!\n");
2235 #endif
2236         dev->vdev.ctrl_handler = &dev->ctrl_handler;
2237         /* register v4l2 video video_device */
2238         ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
2239                                     video_nr[dev->devno]);
2240         if (ret) {
2241                 dev_err(dev->dev,
2242                         "unable to register video device (error=%i).\n",
2243                         ret);
2244                 return ret;
2245         }
2246
2247         dev_info(dev->dev, "Registered video device %s [v4l2]\n",
2248                 video_device_node_name(&dev->vdev));
2249
2250         /* Initialize VBI template */
2251         cx231xx_vbi_template = cx231xx_video_template;
2252         strscpy(cx231xx_vbi_template.name, "cx231xx-vbi",
2253                 sizeof(cx231xx_vbi_template.name));
2254
2255         /* Allocate and fill vbi video_device struct */
2256         cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
2257
2258 #if defined(CONFIG_MEDIA_CONTROLLER)
2259         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
2260         ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
2261         if (ret < 0)
2262                 dev_err(dev->dev, "failed to initialize vbi media entity!\n");
2263 #endif
2264         dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
2265         /* register v4l2 vbi video_device */
2266         ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
2267                                     vbi_nr[dev->devno]);
2268         if (ret < 0) {
2269                 dev_err(dev->dev, "unable to register vbi device\n");
2270                 return ret;
2271         }
2272
2273         dev_info(dev->dev, "Registered VBI device %s\n",
2274                 video_device_node_name(&dev->vbi_dev));
2275
2276         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2277                 cx231xx_vdev_init(dev, &dev->radio_dev,
2278                                 &cx231xx_radio_template, "radio");
2279                 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
2280                 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
2281                                             radio_nr[dev->devno]);
2282                 if (ret < 0) {
2283                         dev_err(dev->dev,
2284                                 "can't register radio device\n");
2285                         return ret;
2286                 }
2287                 dev_info(dev->dev, "Registered radio device as %s\n",
2288                         video_device_node_name(&dev->radio_dev));
2289         }
2290
2291         return 0;
2292 }