SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/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 <linux/init.h>
  26 #include <linux/list.h>
  27 #include <linux/module.h>
  28 #include <linux/kernel.h>
  29 #include <linux/bitmap.h>
  30 #include <linux/usb.h>
  31 #include <linux/i2c.h>
  32 #include <linux/version.h>
  33 #include <linux/mm.h>
  34 #include <linux/mutex.h>
  35
  36 #include <media/v4l2-common.h>
  37 #include <media/v4l2-ioctl.h>
  38 #include <media/v4l2-chip-ident.h>
  39 #include <media/msp3400.h>
  40 #include <media/tuner.h>
  41
  42 #include "dvb_frontend.h"
  43
  44 #include "cx231xx.h"
  45 #include "cx231xx-vbi.h"
  46
  47 #define DRIVER_AUTHOR   "Srinivasa Deevi <srinivasa.deevi@conexant.com>"
  48 #define DRIVER_DESC     "Conexant cx231xx based USB video device driver"
  49
  50 #define cx231xx_videodbg(fmt, arg...) do {\
  51         if (video_debug) \
  52                 printk(KERN_INFO "%s %s :"fmt, \
  53                          dev->name, __func__ , ##arg); } while (0)
  54
  55 static unsigned int isoc_debug;
  56 module_param(isoc_debug, int, 0644);
  57 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  58
  59 #define cx231xx_isocdbg(fmt, arg...) \
  60 do {\
  61         if (isoc_debug) { \
  62                 printk(KERN_INFO "%s %s :"fmt, \
  63                          dev->name, __func__ , ##arg); \
  64         } \
  65   } while (0)
  66
  67 MODULE_AUTHOR(DRIVER_AUTHOR);
  68 MODULE_DESCRIPTION(DRIVER_DESC);
  69 MODULE_LICENSE("GPL");
  70
  71 static unsigned int card[]     = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  72 static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  73 static unsigned int vbi_nr[]   = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  74 static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = UNSET };
  75
  76 module_param_array(card, int, NULL, 0444);
  77 module_param_array(video_nr, int, NULL, 0444);
  78 module_param_array(vbi_nr, int, NULL, 0444);
  79 module_param_array(radio_nr, int, NULL, 0444);
  80
  81 MODULE_PARM_DESC(card, "card type");
  82 MODULE_PARM_DESC(video_nr, "video device numbers");
  83 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
  84 MODULE_PARM_DESC(radio_nr, "radio device numbers");
  85
  86 static unsigned int video_debug;
  87 module_param(video_debug, int, 0644);
  88 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  89
  90 /* supported video standards */
  91 static struct cx231xx_fmt format[] = {
  92         {
  93          .name = "16bpp YUY2, 4:2:2, packed",
  94          .fourcc = V4L2_PIX_FMT_YUYV,
  95          .depth = 16,
  96          .reg = 0,
  97          },
  98 };
  99
 100 /* supported controls */
 101 /* Common to all boards */
 102
 103 /* ------------------------------------------------------------------- */
 104
 105 static const struct v4l2_queryctrl no_ctl = {
 106         .name = "42",
 107         .flags = V4L2_CTRL_FLAG_DISABLED,
 108 };
 109
 110 static struct cx231xx_ctrl cx231xx_ctls[] = {
 111         /* --- video --- */
 112         {
 113                 .v = {
 114                         .id = V4L2_CID_BRIGHTNESS,
 115                         .name = "Brightness",
 116                         .minimum = 0x00,
 117                         .maximum = 0xff,
 118                         .step = 1,
 119                         .default_value = 0x7f,
 120                         .type = V4L2_CTRL_TYPE_INTEGER,
 121                 },
 122                 .off = 128,
 123                 .reg = LUMA_CTRL,
 124                 .mask = 0x00ff,
 125                 .shift = 0,
 126         }, {
 127                 .v = {
 128                         .id = V4L2_CID_CONTRAST,
 129                         .name = "Contrast",
 130                         .minimum = 0,
 131                         .maximum = 0xff,
 132                         .step = 1,
 133                         .default_value = 0x3f,
 134                         .type = V4L2_CTRL_TYPE_INTEGER,
 135                 },
 136                 .off = 0,
 137                 .reg = LUMA_CTRL,
 138                 .mask = 0xff00,
 139                 .shift = 8,
 140         }, {
 141                 .v = {
 142                         .id = V4L2_CID_HUE,
 143                         .name = "Hue",
 144                         .minimum = 0,
 145                         .maximum = 0xff,
 146                         .step = 1,
 147                         .default_value = 0x7f,
 148                         .type = V4L2_CTRL_TYPE_INTEGER,
 149                 },
 150                 .off = 128,
 151                 .reg = CHROMA_CTRL,
 152                 .mask = 0xff0000,
 153                 .shift = 16,
 154         }, {
 155         /* strictly, this only describes only U saturation.
 156         * V saturation is handled specially through code.
 157         */
 158                 .v = {
 159                         .id = V4L2_CID_SATURATION,
 160                         .name = "Saturation",
 161                         .minimum = 0,
 162                         .maximum = 0xff,
 163                         .step = 1,
 164                         .default_value = 0x7f,
 165                         .type = V4L2_CTRL_TYPE_INTEGER,
 166                 },
 167                 .off = 0,
 168                 .reg = CHROMA_CTRL,
 169                 .mask = 0x00ff,
 170                 .shift = 0,
 171         }, {
 172                 /* --- audio --- */
 173                 .v = {
 174                         .id = V4L2_CID_AUDIO_MUTE,
 175                         .name = "Mute",
 176                         .minimum = 0,
 177                         .maximum = 1,
 178                         .default_value = 1,
 179                         .type = V4L2_CTRL_TYPE_BOOLEAN,
 180                 },
 181                 .reg = PATH1_CTL1,
 182                 .mask = (0x1f << 24),
 183                 .shift = 24,
 184         }, {
 185                 .v = {
 186                         .id = V4L2_CID_AUDIO_VOLUME,
 187                         .name = "Volume",
 188                         .minimum = 0,
 189                         .maximum = 0x3f,
 190                         .step = 1,
 191                         .default_value = 0x3f,
 192                         .type = V4L2_CTRL_TYPE_INTEGER,
 193                 },
 194                 .reg = PATH1_VOL_CTL,
 195                 .mask = 0xff,
 196                 .shift = 0,
 197         }
 198 };
 199 static const int CX231XX_CTLS = ARRAY_SIZE(cx231xx_ctls);
 200
 201 static const u32 cx231xx_user_ctrls[] = {
 202         V4L2_CID_USER_CLASS,
 203         V4L2_CID_BRIGHTNESS,
 204         V4L2_CID_CONTRAST,
 205         V4L2_CID_SATURATION,
 206         V4L2_CID_HUE,
 207         V4L2_CID_AUDIO_VOLUME,
 208 #if 0
 209         V4L2_CID_AUDIO_BALANCE,
 210 #endif
 211         V4L2_CID_AUDIO_MUTE,
 212         0
 213 };
 214
 215 static const u32 *ctrl_classes[] = {
 216         cx231xx_user_ctrls,
 217         NULL
 218 };
 219
 220 /* ------------------------------------------------------------------
 221         Video buffer and parser functions
 222    ------------------------------------------------------------------*/
 223
 224 /*
 225  * Announces that a buffer were filled and request the next
 226  */
 227 static inline void buffer_filled(struct cx231xx *dev,
 228                                  struct cx231xx_dmaqueue *dma_q,
 229                                  struct cx231xx_buffer *buf)
 230 {
 231         /* Advice that buffer was filled */
 232         cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
 233         buf->vb.state = VIDEOBUF_DONE;
 234         buf->vb.field_count++;
 235         do_gettimeofday(&buf->vb.ts);
 236
 237         dev->video_mode.isoc_ctl.buf = NULL;
 238
 239         list_del(&buf->vb.queue);
 240         wake_up(&buf->vb.done);
 241 }
 242
 243 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 244 {
 245         char *errmsg = "Unknown";
 246
 247         switch (status) {
 248         case -ENOENT:
 249                 errmsg = "unlinked synchronuously";
 250                 break;
 251         case -ECONNRESET:
 252                 errmsg = "unlinked asynchronuously";
 253                 break;
 254         case -ENOSR:
 255                 errmsg = "Buffer error (overrun)";
 256                 break;
 257         case -EPIPE:
 258                 errmsg = "Stalled (device not responding)";
 259                 break;
 260         case -EOVERFLOW:
 261                 errmsg = "Babble (bad cable?)";
 262                 break;
 263         case -EPROTO:
 264                 errmsg = "Bit-stuff error (bad cable?)";
 265                 break;
 266         case -EILSEQ:
 267                 errmsg = "CRC/Timeout (could be anything)";
 268                 break;
 269         case -ETIME:
 270                 errmsg = "Device does not respond";
 271                 break;
 272         }
 273         if (packet < 0) {
 274                 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);
 275         } else {
 276                 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",
 277                                 packet, status, errmsg);
 278         }
 279 }
 280
 281 /*
 282  * video-buf generic routine to get the next available buffer
 283  */
 284 static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,
 285                                 struct cx231xx_buffer **buf)
 286 {
 287         struct cx231xx_video_mode *vmode =
 288             container_of(dma_q, struct cx231xx_video_mode, vidq);
 289         struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);
 290
 291         char *outp;
 292
 293         if (list_empty(&dma_q->active)) {
 294                 cx231xx_isocdbg("No active queue to serve\n");
 295                 dev->video_mode.isoc_ctl.buf = NULL;
 296                 *buf = NULL;
 297                 return;
 298         }
 299
 300         /* Get the next buffer */
 301         *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, vb.queue);
 302
 303         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 304         outp = videobuf_to_vmalloc(&(*buf)->vb);
 305         memset(outp, 0, (*buf)->vb.size);
 306
 307         dev->video_mode.isoc_ctl.buf = *buf;
 308
 309         return;
 310 }
 311
 312 /*
 313  * Controls the isoc copy of each urb packet
 314  */
 315 static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)
 316 {
 317         struct cx231xx_buffer *buf;
 318         struct cx231xx_dmaqueue *dma_q = urb->context;
 319         unsigned char *outp = NULL;
 320         int i, rc = 1;
 321         unsigned char *p_buffer;
 322         u32 bytes_parsed = 0, buffer_size = 0;
 323         u8 sav_eav = 0;
 324
 325         if (!dev)
 326                 return 0;
 327
 328         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 329                 return 0;
 330
 331         if (urb->status < 0) {
 332                 print_err_status(dev, -1, urb->status);
 333                 if (urb->status == -ENOENT)
 334                         return 0;
 335         }
 336
 337         buf = dev->video_mode.isoc_ctl.buf;
 338         if (buf != NULL)
 339                 outp = videobuf_to_vmalloc(&buf->vb);
 340
 341         for (i = 0; i < urb->number_of_packets; i++) {
 342                 int status = urb->iso_frame_desc[i].status;
 343
 344                 if (status < 0) {
 345                         print_err_status(dev, i, status);
 346                         if (urb->iso_frame_desc[i].status != -EPROTO)
 347                                 continue;
 348                 }
 349
 350                 if (urb->iso_frame_desc[i].actual_length <= 0) {
 351                         /* cx231xx_isocdbg("packet %d is empty",i); - spammy */
 352                         continue;
 353                 }
 354                 if (urb->iso_frame_desc[i].actual_length >
 355                     dev->video_mode.max_pkt_size) {
 356                         cx231xx_isocdbg("packet bigger than packet size");
 357                         continue;
 358                 }
 359
 360                 /*  get buffer pointer and length */
 361                 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 362                 buffer_size = urb->iso_frame_desc[i].actual_length;
 363                 bytes_parsed = 0;
 364
 365                 if (dma_q->is_partial_line) {
 366                         /* Handle the case where we were working on a partial line */
 367                         sav_eav = dma_q->last_sav;
 368                 } else {
 369                         /* Check for a SAV/EAV overlapping the buffer boundary */
 370                         sav_eav =
 371                             cx231xx_find_boundary_SAV_EAV(p_buffer,
 372                                                           dma_q->partial_buf,
 373                                                           &bytes_parsed);
 374                 }
 375
 376                 sav_eav &= 0xF0;
 377                 /* Get the first line if we have some portion of an SAV/EAV from
 378                    the last buffer or a partial line  */
 379                 if (sav_eav) {
 380                         bytes_parsed += cx231xx_get_video_line(dev, dma_q,
 381                                                 sav_eav,        /* SAV/EAV */
 382                                                 p_buffer + bytes_parsed,        /* p_buffer */
 383                                                 buffer_size - bytes_parsed);    /* buffer size */
 384                 }
 385
 386                 /* Now parse data that is completely in this buffer */
 387                 /* dma_q->is_partial_line = 0;  */
 388
 389                 while (bytes_parsed < buffer_size) {
 390                         u32 bytes_used = 0;
 391
 392                         sav_eav = cx231xx_find_next_SAV_EAV(p_buffer + bytes_parsed,    /* p_buffer */
 393                                                 buffer_size - bytes_parsed,     /* buffer size */
 394                                                 &bytes_used);   /* Receives bytes used to get SAV/EAV */
 395
 396                         bytes_parsed += bytes_used;
 397
 398                         sav_eav &= 0xF0;
 399                         if (sav_eav && (bytes_parsed < buffer_size)) {
 400                                 bytes_parsed += cx231xx_get_video_line(dev,
 401                                                 dma_q, sav_eav, /* SAV/EAV */
 402                                                 p_buffer + bytes_parsed,        /* p_buffer */
 403                                                 buffer_size - bytes_parsed);    /* buffer size */
 404                         }
 405                 }
 406
 407                 /* Save the last four bytes of the buffer so we can check the
 408                    buffer boundary condition next time */
 409                 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);
 410                 bytes_parsed = 0;
 411
 412         }
 413         return rc;
 414 }
 415
 416 u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,
 417                                  u32 *p_bytes_used)
 418 {
 419         u32 bytes_used;
 420         u8 boundary_bytes[8];
 421         u8 sav_eav = 0;
 422
 423         *p_bytes_used = 0;
 424
 425         /* Create an array of the last 4 bytes of the last buffer and the first
 426            4 bytes of the current buffer. */
 427
 428         memcpy(boundary_bytes, partial_buf, 4);
 429         memcpy(boundary_bytes + 4, p_buffer, 4);
 430
 431         /* Check for the SAV/EAV in the boundary buffer */
 432         sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,
 433                                             &bytes_used);
 434
 435         if (sav_eav) {
 436                 /* found a boundary SAV/EAV.  Updates the bytes used to reflect
 437                    only those used in the new buffer */
 438                 *p_bytes_used = bytes_used - 4;
 439         }
 440
 441         return sav_eav;
 442 }
 443
 444 u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)
 445 {
 446         u32 i;
 447         u8 sav_eav = 0;
 448
 449         /*
 450          * Don't search if the buffer size is less than 4.  It causes a page
 451          * fault since buffer_size - 4 evaluates to a large number in that
 452          * case.
 453          */
 454         if (buffer_size < 4) {
 455                 *p_bytes_used = buffer_size;
 456                 return 0;
 457         }
 458
 459         for (i = 0; i < (buffer_size - 3); i++) {
 460
 461                 if ((p_buffer[i] == 0xFF) &&
 462                     (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {
 463
 464                         *p_bytes_used = i + 4;
 465                         sav_eav = p_buffer[i + 3];
 466                         return sav_eav;
 467                 }
 468         }
 469
 470         *p_bytes_used = buffer_size;
 471         return 0;
 472 }
 473
 474 u32 cx231xx_get_video_line(struct cx231xx *dev,
 475                            struct cx231xx_dmaqueue *dma_q, u8 sav_eav,
 476                            u8 *p_buffer, u32 buffer_size)
 477 {
 478         u32 bytes_copied = 0;
 479         int current_field = -1;
 480
 481         switch (sav_eav) {
 482         case SAV_ACTIVE_VIDEO_FIELD1:
 483                 /* looking for skipped line which occurred in PAL 720x480 mode.
 484                    In this case, there will be no active data contained
 485                    between the SAV and EAV */
 486                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 487                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 488                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 489                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 490                      (p_buffer[3] == EAV_VBLANK_FIELD1) ||
 491                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 492                         return bytes_copied;
 493                 current_field = 1;
 494                 break;
 495
 496         case SAV_ACTIVE_VIDEO_FIELD2:
 497                 /* looking for skipped line which occurred in PAL 720x480 mode.
 498                    In this case, there will be no active data contained between
 499                    the SAV and EAV */
 500                 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&
 501                     (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&
 502                     ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||
 503                      (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||
 504                      (p_buffer[3] == EAV_VBLANK_FIELD1)       ||
 505                      (p_buffer[3] == EAV_VBLANK_FIELD2)))
 506                         return bytes_copied;
 507                 current_field = 2;
 508                 break;
 509         }
 510
 511         dma_q->last_sav = sav_eav;
 512
 513         bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,
 514                                                buffer_size, current_field);
 515
 516         return bytes_copied;
 517 }
 518
 519 u32 cx231xx_copy_video_line(struct cx231xx *dev,
 520                             struct cx231xx_dmaqueue *dma_q, u8 *p_line,
 521                             u32 length, int field_number)
 522 {
 523         u32 bytes_to_copy;
 524         struct cx231xx_buffer *buf;
 525         u32 _line_size = dev->width * 2;
 526
 527         if (dma_q->current_field != field_number)
 528                 cx231xx_reset_video_buffer(dev, dma_q);
 529
 530         /* get the buffer pointer */
 531         buf = dev->video_mode.isoc_ctl.buf;
 532
 533         /* Remember the field number for next time */
 534         dma_q->current_field = field_number;
 535
 536         bytes_to_copy = dma_q->bytes_left_in_line;
 537         if (bytes_to_copy > length)
 538                 bytes_to_copy = length;
 539
 540         if (dma_q->lines_completed >= dma_q->lines_per_field) {
 541                 dma_q->bytes_left_in_line -= bytes_to_copy;
 542                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?
 543                                           0 : 1;
 544                 return 0;
 545         }
 546
 547         dma_q->is_partial_line = 1;
 548
 549         /* If we don't have a buffer, just return the number of bytes we would
 550            have copied if we had a buffer. */
 551         if (!buf) {
 552                 dma_q->bytes_left_in_line -= bytes_to_copy;
 553                 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)
 554                                          ? 0 : 1;
 555                 return bytes_to_copy;
 556         }
 557
 558         /* copy the data to video buffer */
 559         cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);
 560
 561         dma_q->pos += bytes_to_copy;
 562         dma_q->bytes_left_in_line -= bytes_to_copy;
 563
 564         if (dma_q->bytes_left_in_line == 0) {
 565                 dma_q->bytes_left_in_line = _line_size;
 566                 dma_q->lines_completed++;
 567                 dma_q->is_partial_line = 0;
 568
 569                 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {
 570                         buffer_filled(dev, dma_q, buf);
 571
 572                         dma_q->pos = 0;
 573                         buf = NULL;
 574                         dma_q->lines_completed = 0;
 575                 }
 576         }
 577
 578         return bytes_to_copy;
 579 }
 580
 581 void cx231xx_reset_video_buffer(struct cx231xx *dev,
 582                                 struct cx231xx_dmaqueue *dma_q)
 583 {
 584         struct cx231xx_buffer *buf;
 585
 586         /* handle the switch from field 1 to field 2 */
 587         if (dma_q->current_field == 1) {
 588                 if (dma_q->lines_completed >= dma_q->lines_per_field)
 589                         dma_q->field1_done = 1;
 590                 else
 591                         dma_q->field1_done = 0;
 592         }
 593
 594         buf = dev->video_mode.isoc_ctl.buf;
 595
 596         if (buf == NULL) {
 597                 u8 *outp = NULL;
 598                 /* first try to get the buffer */
 599                 get_next_buf(dma_q, &buf);
 600
 601                 if (buf)
 602                         outp = videobuf_to_vmalloc(&buf->vb);
 603
 604                 dma_q->pos = 0;
 605                 dma_q->field1_done = 0;
 606                 dma_q->current_field = -1;
 607         }
 608
 609         /* reset the counters */
 610         dma_q->bytes_left_in_line = dev->width << 1;
 611         dma_q->lines_completed = 0;
 612 }
 613
 614 int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
 615                     u8 *p_buffer, u32 bytes_to_copy)
 616 {
 617         u8 *p_out_buffer = NULL;
 618         u32 current_line_bytes_copied = 0;
 619         struct cx231xx_buffer *buf;
 620         u32 _line_size = dev->width << 1;
 621         void *startwrite;
 622         int offset, lencopy;
 623
 624         buf = dev->video_mode.isoc_ctl.buf;
 625
 626         if (buf == NULL)
 627                 return -1;
 628
 629         p_out_buffer = videobuf_to_vmalloc(&buf->vb);
 630
 631         current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;
 632
 633         /* Offset field 2 one line from the top of the buffer */
 634         offset = (dma_q->current_field == 1) ? 0 : _line_size;
 635
 636         /* Offset for field 2 */
 637         startwrite = p_out_buffer + offset;
 638
 639         /* lines already completed in the current field */
 640         startwrite += (dma_q->lines_completed * _line_size * 2);
 641
 642         /* bytes already completed in the current line */
 643         startwrite += current_line_bytes_copied;
 644
 645         lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?
 646                   bytes_to_copy : dma_q->bytes_left_in_line;
 647
 648         if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + buf->vb.size))
 649                 return 0;
 650
 651         /* The below copies the UYVY data straight into video buffer */
 652         cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);
 653
 654         return 0;
 655 }
 656
 657 void cx231xx_swab(u16 *from, u16 *to, u16 len)
 658 {
 659         u16 i;
 660
 661         if (len <= 0)
 662                 return;
 663
 664         for (i = 0; i < len / 2; i++)
 665                 to[i] = (from[i] << 8) | (from[i] >> 8);
 666 }
 667
 668 u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)
 669 {
 670         u8 buffer_complete = 0;
 671
 672         /* Dual field stream */
 673         buffer_complete = ((dma_q->current_field == 2) &&
 674                            (dma_q->lines_completed >= dma_q->lines_per_field) &&
 675                             dma_q->field1_done);
 676
 677         return buffer_complete;
 678 }
 679
 680 /* ------------------------------------------------------------------
 681         Videobuf operations
 682    ------------------------------------------------------------------*/
 683
 684 static int
 685 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 686 {
 687         struct cx231xx_fh *fh = vq->priv_data;
 688         struct cx231xx *dev = fh->dev;
 689         struct v4l2_frequency f;
 690
 691         *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)>>3;
 692         if (0 == *count)
 693                 *count = CX231XX_DEF_BUF;
 694
 695         if (*count < CX231XX_MIN_BUF)
 696                 *count = CX231XX_MIN_BUF;
 697
 698         /* Ask tuner to go to analog mode */
 699         memset(&f, 0, sizeof(f));
 700         f.frequency = dev->ctl_freq;
 701         f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
 702
 703         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_FREQUENCY, &f);
 704
 705         return 0;
 706 }
 707
 708 /* This is called *without* dev->slock held; please keep it that way */
 709 static void free_buffer(struct videobuf_queue *vq, struct cx231xx_buffer *buf)
 710 {
 711         struct cx231xx_fh *fh = vq->priv_data;
 712         struct cx231xx *dev = fh->dev;
 713         unsigned long flags = 0;
 714
 715         if (in_interrupt())
 716                 BUG();
 717
 718         /* We used to wait for the buffer to finish here, but this didn't work
 719            because, as we were keeping the state as VIDEOBUF_QUEUED,
 720            videobuf_queue_cancel marked it as finished for us.
 721            (Also, it could wedge forever if the hardware was misconfigured.)
 722
 723            This should be safe; by the time we get here, the buffer isn't
 724            queued anymore. If we ever start marking the buffers as
 725            VIDEOBUF_ACTIVE, it won't be, though.
 726          */
 727         spin_lock_irqsave(&dev->video_mode.slock, flags);
 728         if (dev->video_mode.isoc_ctl.buf == buf)
 729                 dev->video_mode.isoc_ctl.buf = NULL;
 730         spin_unlock_irqrestore(&dev->video_mode.slock, flags);
 731
 732         videobuf_vmalloc_free(&buf->vb);
 733         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 734 }
 735
 736 static int
 737 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 738                enum v4l2_field field)
 739 {
 740         struct cx231xx_fh *fh = vq->priv_data;
 741         struct cx231xx_buffer *buf =
 742             container_of(vb, struct cx231xx_buffer, vb);
 743         struct cx231xx *dev = fh->dev;
 744         int rc = 0, urb_init = 0;
 745
 746         /* The only currently supported format is 16 bits/pixel */
 747         buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
 748                         + 7) >> 3;
 749         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
 750                 return -EINVAL;
 751
 752         buf->vb.width = dev->width;
 753         buf->vb.height = dev->height;
 754         buf->vb.field = field;
 755
 756         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 757                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 758                 if (rc < 0)
 759                         goto fail;
 760         }
 761
 762         if (!dev->video_mode.isoc_ctl.num_bufs)
 763                 urb_init = 1;
 764
 765         if (urb_init) {
 766                 rc = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,
 767                                        CX231XX_NUM_BUFS,
 768                                        dev->video_mode.max_pkt_size,
 769                                        cx231xx_isoc_copy);
 770                 if (rc < 0)
 771                         goto fail;
 772         }
 773
 774         buf->vb.state = VIDEOBUF_PREPARED;
 775         return 0;
 776
 777 fail:
 778         free_buffer(vq, buf);
 779         return rc;
 780 }
 781
 782 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 783 {
 784         struct cx231xx_buffer *buf =
 785             container_of(vb, struct cx231xx_buffer, vb);
 786         struct cx231xx_fh *fh = vq->priv_data;
 787         struct cx231xx *dev = fh->dev;
 788         struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;
 789
 790         buf->vb.state = VIDEOBUF_QUEUED;
 791         list_add_tail(&buf->vb.queue, &vidq->active);
 792
 793 }
 794
 795 static void buffer_release(struct videobuf_queue *vq,
 796                            struct videobuf_buffer *vb)
 797 {
 798         struct cx231xx_buffer *buf =
 799             container_of(vb, struct cx231xx_buffer, vb);
 800         struct cx231xx_fh *fh = vq->priv_data;
 801         struct cx231xx *dev = (struct cx231xx *)fh->dev;
 802
 803         cx231xx_isocdbg("cx231xx: called buffer_release\n");
 804
 805         free_buffer(vq, buf);
 806 }
 807
 808 static struct videobuf_queue_ops cx231xx_video_qops = {
 809         .buf_setup = buffer_setup,
 810         .buf_prepare = buffer_prepare,
 811         .buf_queue = buffer_queue,
 812         .buf_release = buffer_release,
 813 };
 814
 815 /*********************  v4l2 interface  **************************************/
 816
 817 void video_mux(struct cx231xx *dev, int index)
 818 {
 819
 820         struct v4l2_routing route;
 821
 822         route.input = INPUT(index)->vmux;
 823         route.output = 0;
 824         dev->video_input = index;
 825         dev->ctl_ainput = INPUT(index)->amux;
 826
 827         cx231xx_set_video_input_mux(dev, index);
 828
 829         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_INT_S_VIDEO_ROUTING,
 830                                  &route);
 831
 832         cx231xx_set_audio_input(dev, dev->ctl_ainput);
 833
 834         cx231xx_info("video_mux : %d\n", index);
 835
 836         /* do mode control overrides if required */
 837         cx231xx_do_mode_ctrl_overrides(dev);
 838 }
 839
 840 /* Usage lock check functions */
 841 static int res_get(struct cx231xx_fh *fh)
 842 {
 843         struct cx231xx *dev = fh->dev;
 844         int rc = 0;
 845
 846         /* This instance already has stream_on */
 847         if (fh->stream_on)
 848                 return rc;
 849
 850         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 851                 if (dev->stream_on)
 852                         return -EBUSY;
 853                 dev->stream_on = 1;
 854         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 855                 if (dev->vbi_stream_on)
 856                         return -EBUSY;
 857                 dev->vbi_stream_on = 1;
 858         } else
 859                 return -EINVAL;
 860
 861         fh->stream_on = 1;
 862
 863         return rc;
 864 }
 865
 866 static int res_check(struct cx231xx_fh *fh)
 867 {
 868         return fh->stream_on;
 869 }
 870
 871 static void res_free(struct cx231xx_fh *fh)
 872 {
 873         struct cx231xx *dev = fh->dev;
 874
 875         fh->stream_on = 0;
 876
 877         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 878                 dev->stream_on = 0;
 879         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
 880                 dev->vbi_stream_on = 0;
 881 }
 882
 883 static int check_dev(struct cx231xx *dev)
 884 {
 885         if (dev->state & DEV_DISCONNECTED) {
 886                 cx231xx_errdev("v4l2 ioctl: device not present\n");
 887                 return -ENODEV;
 888         }
 889
 890         if (dev->state & DEV_MISCONFIGURED) {
 891                 cx231xx_errdev("v4l2 ioctl: device is misconfigured; "
 892                                "close and open it again\n");
 893                 return -EIO;
 894         }
 895         return 0;
 896 }
 897
 898 void get_scale(struct cx231xx *dev,
 899                unsigned int width, unsigned int height,
 900                unsigned int *hscale, unsigned int *vscale)
 901 {
 902         unsigned int maxw = norm_maxw(dev);
 903         unsigned int maxh = norm_maxh(dev);
 904
 905         *hscale = (((unsigned long)maxw) << 12) / width - 4096L;
 906         if (*hscale >= 0x4000)
 907                 *hscale = 0x3fff;
 908
 909         *vscale = (((unsigned long)maxh) << 12) / height - 4096L;
 910         if (*vscale >= 0x4000)
 911                 *vscale = 0x3fff;
 912
 913         dev->hscale = *hscale;
 914         dev->vscale = *vscale;
 915
 916 }
 917
 918 /* ------------------------------------------------------------------
 919         IOCTL vidioc handling
 920    ------------------------------------------------------------------*/
 921
 922 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 923                                 struct v4l2_format *f)
 924 {
 925         struct cx231xx_fh *fh = priv;
 926         struct cx231xx *dev = fh->dev;
 927
 928         mutex_lock(&dev->lock);
 929
 930         f->fmt.pix.width = dev->width;
 931         f->fmt.pix.height = dev->height;
 932         f->fmt.pix.pixelformat = dev->format->fourcc;;
 933         f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;;
 934         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;
 935         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 936
 937         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 938
 939         mutex_unlock(&dev->lock);
 940
 941         return 0;
 942 }
 943
 944 static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)
 945 {
 946         unsigned int i;
 947
 948         for (i = 0; i < ARRAY_SIZE(format); i++)
 949                 if (format[i].fourcc == fourcc)
 950                         return &format[i];
 951
 952         return NULL;
 953 }
 954
 955 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 956                                   struct v4l2_format *f)
 957 {
 958         struct cx231xx_fh *fh = priv;
 959         struct cx231xx *dev = fh->dev;
 960         int width = f->fmt.pix.width;
 961         int height = f->fmt.pix.height;
 962         unsigned int maxw = norm_maxw(dev);
 963         unsigned int maxh = norm_maxh(dev);
 964         unsigned int hscale, vscale;
 965         struct cx231xx_fmt *fmt;
 966
 967         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 968         if (!fmt) {
 969                 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",
 970                                  f->fmt.pix.pixelformat);
 971                 return -EINVAL;
 972         }
 973
 974         /* width must even because of the YUYV format
 975            height must be even because of interlacing */
 976         height &= 0xfffe;
 977         width &= 0xfffe;
 978
 979         if (unlikely(height < 32))
 980                 height = 32;
 981         if (unlikely(height > maxh))
 982                 height = maxh;
 983         if (unlikely(width < 48))
 984                 width = 48;
 985         if (unlikely(width > maxw))
 986                 width = maxw;
 987
 988         get_scale(dev, width, height, &hscale, &vscale);
 989
 990         width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
 991         height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
 992
 993         f->fmt.pix.width = width;
 994         f->fmt.pix.height = height;
 995         f->fmt.pix.pixelformat = fmt->fourcc;
 996         f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3;
 997         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;
 998         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 999         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1000
1001         return 0;
1002 }
1003
1004 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1005                                 struct v4l2_format *f)
1006 {
1007         struct cx231xx_fh *fh = priv;
1008         struct cx231xx *dev = fh->dev;
1009         int rc;
1010         struct cx231xx_fmt *fmt;
1011
1012         rc = check_dev(dev);
1013         if (rc < 0)
1014                 return rc;
1015
1016         mutex_lock(&dev->lock);
1017
1018         vidioc_try_fmt_vid_cap(file, priv, f);
1019
1020         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1021         if (!fmt) {
1022                 rc = -EINVAL;
1023                 goto out;
1024         }
1025
1026         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1027                 cx231xx_errdev("%s queue busy\n", __func__);
1028                 rc = -EBUSY;
1029                 goto out;
1030         }
1031
1032         if (dev->stream_on && !fh->stream_on) {
1033                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1034                 rc = -EBUSY;
1035                 goto out;
1036         }
1037
1038         /* set new image size */
1039         dev->width = f->fmt.pix.width;
1040         dev->height = f->fmt.pix.height;
1041         dev->format = fmt;
1042         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1043
1044         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_FMT, f);
1045
1046         /* Set the correct alternate setting for this resolution */
1047         cx231xx_resolution_set(dev);
1048
1049 out:
1050         mutex_unlock(&dev->lock);
1051         return rc;
1052 }
1053
1054 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id * id)
1055 {
1056         struct cx231xx_fh *fh = priv;
1057         struct cx231xx *dev = fh->dev;
1058
1059         *id = dev->norm;
1060         return 0;
1061 }
1062
1063 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
1064 {
1065         struct cx231xx_fh *fh = priv;
1066         struct cx231xx *dev = fh->dev;
1067         struct v4l2_format f;
1068         int rc;
1069
1070         rc = check_dev(dev);
1071         if (rc < 0)
1072                 return rc;
1073
1074         cx231xx_info("vidioc_s_std : 0x%x\n", (unsigned int)*norm);
1075
1076         mutex_lock(&dev->lock);
1077         dev->norm = *norm;
1078
1079         /* Adjusts width/height, if needed */
1080         f.fmt.pix.width = dev->width;
1081         f.fmt.pix.height = dev->height;
1082         vidioc_try_fmt_vid_cap(file, priv, &f);
1083
1084         /* set new image size */
1085         dev->width = f.fmt.pix.width;
1086         dev->height = f.fmt.pix.height;
1087         get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
1088
1089         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_STD, &dev->norm);
1090
1091         mutex_unlock(&dev->lock);
1092
1093         cx231xx_resolution_set(dev);
1094
1095         /* do mode control overrides */
1096         cx231xx_do_mode_ctrl_overrides(dev);
1097
1098         return 0;
1099 }
1100
1101 static const char *iname[] = {
1102         [CX231XX_VMUX_COMPOSITE1] = "Composite1",
1103         [CX231XX_VMUX_SVIDEO]     = "S-Video",
1104         [CX231XX_VMUX_TELEVISION] = "Television",
1105         [CX231XX_VMUX_CABLE]      = "Cable TV",
1106         [CX231XX_VMUX_DVB]        = "DVB",
1107         [CX231XX_VMUX_DEBUG]      = "for debug only",
1108 };
1109
1110 static int vidioc_enum_input(struct file *file, void *priv,
1111                              struct v4l2_input *i)
1112 {
1113         struct cx231xx_fh *fh = priv;
1114         struct cx231xx *dev = fh->dev;
1115         unsigned int n;
1116
1117         n = i->index;
1118         if (n >= MAX_CX231XX_INPUT)
1119                 return -EINVAL;
1120         if (0 == INPUT(n)->type)
1121                 return -EINVAL;
1122
1123         i->index = n;
1124         i->type = V4L2_INPUT_TYPE_CAMERA;
1125
1126         strcpy(i->name, iname[INPUT(n)->type]);
1127
1128         if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||
1129             (CX231XX_VMUX_CABLE == INPUT(n)->type))
1130                 i->type = V4L2_INPUT_TYPE_TUNER;
1131
1132         i->std = dev->vdev->tvnorms;
1133
1134         return 0;
1135 }
1136
1137 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1138 {
1139         struct cx231xx_fh *fh = priv;
1140         struct cx231xx *dev = fh->dev;
1141
1142         *i = dev->video_input;
1143
1144         return 0;
1145 }
1146
1147 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1148 {
1149         struct cx231xx_fh *fh = priv;
1150         struct cx231xx *dev = fh->dev;
1151         int rc;
1152
1153         rc = check_dev(dev);
1154         if (rc < 0)
1155                 return rc;
1156
1157         if (i >= MAX_CX231XX_INPUT)
1158                 return -EINVAL;
1159         if (0 == INPUT(i)->type)
1160                 return -EINVAL;
1161
1162         mutex_lock(&dev->lock);
1163
1164         video_mux(dev, i);
1165
1166         mutex_unlock(&dev->lock);
1167         return 0;
1168 }
1169
1170 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1171 {
1172         struct cx231xx_fh *fh = priv;
1173         struct cx231xx *dev = fh->dev;
1174
1175         switch (a->index) {
1176         case CX231XX_AMUX_VIDEO:
1177                 strcpy(a->name, "Television");
1178                 break;
1179         case CX231XX_AMUX_LINE_IN:
1180                 strcpy(a->name, "Line In");
1181                 break;
1182         default:
1183                 return -EINVAL;
1184         }
1185
1186         a->index = dev->ctl_ainput;
1187         a->capability = V4L2_AUDCAP_STEREO;
1188
1189         return 0;
1190 }
1191
1192 static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
1193 {
1194         struct cx231xx_fh *fh = priv;
1195         struct cx231xx *dev = fh->dev;
1196         int status = 0;
1197
1198         /* Doesn't allow manual routing */
1199         if (a->index != dev->ctl_ainput)
1200                 return -EINVAL;
1201
1202         dev->ctl_ainput = INPUT(a->index)->amux;
1203         status = cx231xx_set_audio_input(dev, dev->ctl_ainput);
1204
1205         return status;
1206 }
1207
1208 static int vidioc_queryctrl(struct file *file, void *priv,
1209                             struct v4l2_queryctrl *qc)
1210 {
1211         struct cx231xx_fh *fh = priv;
1212         struct cx231xx *dev = fh->dev;
1213         int id = qc->id;
1214         int i;
1215         int rc;
1216
1217         rc = check_dev(dev);
1218         if (rc < 0)
1219                 return rc;
1220
1221         qc->id = v4l2_ctrl_next(ctrl_classes, qc->id);
1222         if (unlikely(qc->id == 0))
1223                 return -EINVAL;
1224
1225         memset(qc, 0, sizeof(*qc));
1226
1227         qc->id = id;
1228
1229         if (qc->id < V4L2_CID_BASE || qc->id >= V4L2_CID_LASTP1)
1230                 return -EINVAL;
1231
1232         for (i = 0; i < CX231XX_CTLS; i++)
1233                 if (cx231xx_ctls[i].v.id == qc->id)
1234                         break;
1235
1236         if (i == CX231XX_CTLS) {
1237                 *qc = no_ctl;
1238                 return 0;
1239         }
1240         *qc = cx231xx_ctls[i].v;
1241
1242         mutex_lock(&dev->lock);
1243         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_QUERYCTRL, qc);
1244         mutex_unlock(&dev->lock);
1245
1246         if (qc->type)
1247                 return 0;
1248         else
1249                 return -EINVAL;
1250 }
1251
1252 static int vidioc_g_ctrl(struct file *file, void *priv,
1253                          struct v4l2_control *ctrl)
1254 {
1255         struct cx231xx_fh *fh = priv;
1256         struct cx231xx *dev = fh->dev;
1257         int rc;
1258
1259         rc = check_dev(dev);
1260         if (rc < 0)
1261                 return rc;
1262
1263         mutex_lock(&dev->lock);
1264
1265         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_CTRL, ctrl);
1266
1267         mutex_unlock(&dev->lock);
1268         return rc;
1269 }
1270
1271 static int vidioc_s_ctrl(struct file *file, void *priv,
1272                          struct v4l2_control *ctrl)
1273 {
1274         struct cx231xx_fh *fh = priv;
1275         struct cx231xx *dev = fh->dev;
1276         int rc;
1277
1278         rc = check_dev(dev);
1279         if (rc < 0)
1280                 return rc;
1281
1282         mutex_lock(&dev->lock);
1283
1284         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_S_CTRL, ctrl);
1285
1286         mutex_unlock(&dev->lock);
1287         return rc;
1288 }
1289
1290 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1291 {
1292         struct cx231xx_fh *fh = priv;
1293         struct cx231xx *dev = fh->dev;
1294         int rc;
1295
1296         rc = check_dev(dev);
1297         if (rc < 0)
1298                 return rc;
1299
1300         if (0 != t->index)
1301                 return -EINVAL;
1302
1303         strcpy(t->name, "Tuner");
1304
1305         t->type = V4L2_TUNER_ANALOG_TV;
1306         t->capability = V4L2_TUNER_CAP_NORM;
1307         t->rangehigh = 0xffffffffUL;
1308         t->signal = 0xffff;     /* LOCKED */
1309
1310         return 0;
1311 }
1312
1313 static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1314 {
1315         struct cx231xx_fh *fh = priv;
1316         struct cx231xx *dev = fh->dev;
1317         int rc;
1318
1319         rc = check_dev(dev);
1320         if (rc < 0)
1321                 return rc;
1322
1323         if (0 != t->index)
1324                 return -EINVAL;
1325 #if 0
1326         mutex_lock(&dev->lock);
1327
1328         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_TUNER, t);
1329
1330         mutex_unlock(&dev->lock);
1331 #endif
1332         return 0;
1333 }
1334
1335 static int vidioc_g_frequency(struct file *file, void *priv,
1336                               struct v4l2_frequency *f)
1337 {
1338         struct cx231xx_fh *fh = priv;
1339         struct cx231xx *dev = fh->dev;
1340
1341         mutex_lock(&dev->lock);
1342         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1343         f->frequency = dev->ctl_freq;
1344
1345         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_G_FREQUENCY, f);
1346
1347         mutex_unlock(&dev->lock);
1348
1349         return 0;
1350 }
1351
1352 static int vidioc_s_frequency(struct file *file, void *priv,
1353                               struct v4l2_frequency *f)
1354 {
1355         struct cx231xx_fh *fh = priv;
1356         struct cx231xx *dev = fh->dev;
1357         int rc;
1358
1359         rc = check_dev(dev);
1360         if (rc < 0)
1361                 return rc;
1362
1363         if (0 != f->tuner)
1364                 return -EINVAL;
1365
1366         if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1367                 return -EINVAL;
1368         if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1369                 return -EINVAL;
1370
1371         /* set pre channel change settings in DIF first */
1372         rc = cx231xx_tuner_pre_channel_change(dev);
1373
1374         mutex_lock(&dev->lock);
1375
1376         dev->ctl_freq = f->frequency;
1377
1378         if (dev->tuner_type == TUNER_XC5000) {
1379                 if (dev->cx231xx_set_analog_freq != NULL)
1380                         dev->cx231xx_set_analog_freq(dev, f->frequency);
1381         } else {
1382                 cx231xx_i2c_call_clients(&dev->i2c_bus[1],
1383                                          VIDIOC_S_FREQUENCY, f);
1384         }
1385
1386         mutex_unlock(&dev->lock);
1387
1388         /* set post channel change settings in DIF first */
1389         rc = cx231xx_tuner_post_channel_change(dev);
1390
1391         cx231xx_info("Set New FREQUENCY to %d\n", f->frequency);
1392
1393         return rc;
1394 }
1395
1396 #ifdef CONFIG_VIDEO_ADV_DEBUG
1397
1398 /*
1399   -R, --list-registers=type=<host/i2cdrv/i2caddr>,chip=<chip>[,min=<addr>,max=<addr>]
1400                      dump registers from <min> to <max> [VIDIOC_DBG_G_REGISTER]
1401   -r, --set-register=type=<host/i2cdrv/i2caddr>,chip=<chip>,reg=<addr>,val=<val>
1402                      set the register [VIDIOC_DBG_S_REGISTER]
1403
1404   if type == host, then <chip> is the hosts chip ID (default 0)
1405   if type == i2cdrv (default), then <chip> is the I2C driver name or ID
1406   if type == i2caddr, then <chip> is the 7-bit I2C address
1407 */
1408
1409 static int vidioc_g_register(struct file *file, void *priv,
1410                              struct v4l2_dbg_register *reg)
1411 {
1412         struct cx231xx_fh *fh = priv;
1413         struct cx231xx *dev = fh->dev;
1414         int ret = 0;
1415         u8 value[4] = { 0, 0, 0, 0 };
1416         u32 data = 0;
1417
1418         switch (reg->match.type) {
1419         case V4L2_CHIP_MATCH_HOST:
1420                 switch (reg->match.addr) {
1421                 case 0: /* Cx231xx - internal registers */
1422                         ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
1423                                                   (u16)reg->reg, value, 4);
1424                         reg->val = value[0] | value[1] << 8 |
1425                                    value[2] << 16 | value[3] << 24;
1426                         break;
1427                 case 1: /* Colibri - read byte */
1428                         ret = cx231xx_read_i2c_data(dev, Colibri_DEVICE_ADDRESS,
1429                                                   (u16)reg->reg, 2, &data, 1);
1430                         reg->val = le32_to_cpu(data & 0xff);
1431                         break;
1432                 case 14:        /* Colibri - read dword */
1433                         ret = cx231xx_read_i2c_data(dev, Colibri_DEVICE_ADDRESS,
1434                                                   (u16)reg->reg, 2, &data, 4);
1435                         reg->val = le32_to_cpu(data);
1436                         break;
1437                 case 2: /* Hammerhead - read byte */
1438                         ret = cx231xx_read_i2c_data(dev, HAMMERHEAD_I2C_ADDRESS,
1439                                                   (u16)reg->reg, 2, &data, 1);
1440                         reg->val = le32_to_cpu(data & 0xff);
1441                         break;
1442                 case 24:        /* Hammerhead - read dword */
1443                         ret = cx231xx_read_i2c_data(dev, HAMMERHEAD_I2C_ADDRESS,
1444                                                   (u16)reg->reg, 2, &data, 4);
1445                         reg->val = le32_to_cpu(data);
1446                         break;
1447                 case 3: /* flatiron - read byte */
1448                         ret = cx231xx_read_i2c_data(dev,
1449                                                     Flatrion_DEVICE_ADDRESS,
1450                                                     (u16)reg->reg, 1,
1451                                                     &data, 1);
1452                         reg->val = le32_to_cpu(data & 0xff);
1453                         break;
1454                 case 34:        /* flatiron - read dword */
1455                         ret =
1456                             cx231xx_read_i2c_data(dev, Flatrion_DEVICE_ADDRESS,
1457                                                   (u16)reg->reg, 1, &data, 4);
1458                         reg->val = le32_to_cpu(data);
1459                         break;
1460                 }
1461                 return ret < 0 ? ret : 0;
1462
1463         case V4L2_CHIP_MATCH_I2C_DRIVER:
1464                 cx231xx_i2c_call_clients(&dev->i2c_bus[0],
1465                                          VIDIOC_DBG_G_REGISTER, reg);
1466                 return 0;
1467         case V4L2_CHIP_MATCH_I2C_ADDR:
1468                 /* Not supported yet */
1469                 return -EINVAL;
1470         default:
1471                 if (!v4l2_chip_match_host(&reg->match))
1472                         return -EINVAL;
1473         }
1474
1475         mutex_lock(&dev->lock);
1476         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_DBG_G_REGISTER, reg);
1477         mutex_unlock(&dev->lock);
1478
1479         return ret;
1480 }
1481
1482 static int vidioc_s_register(struct file *file, void *priv,
1483                              struct v4l2_dbg_register *reg)
1484 {
1485         struct cx231xx_fh *fh = priv;
1486         struct cx231xx *dev = fh->dev;
1487         int ret = 0;
1488         __le64 buf;
1489         u32 value;
1490         u8 data[4] = { 0, 0, 0, 0 };
1491
1492         buf = cpu_to_le64(reg->val);
1493
1494         switch (reg->match.type) {
1495         case V4L2_CHIP_MATCH_HOST:
1496                 {
1497                         value = (u32) buf & 0xffffffff;
1498
1499                         switch (reg->match.addr) {
1500                         case 0: /* cx231xx internal registers */
1501                                 data[0] = (u8) value;
1502                                 data[1] = (u8) (value >> 8);
1503                                 data[2] = (u8) (value >> 16);
1504                                 data[3] = (u8) (value >> 24);
1505                                 ret = cx231xx_write_ctrl_reg(dev,
1506                                                            VRT_SET_REGISTER,
1507                                                            (u16)reg->reg, data,
1508                                                            4);
1509                                 break;
1510                         case 1: /* Colibri - read byte */
1511                                 ret = cx231xx_write_i2c_data(dev,
1512                                                         Colibri_DEVICE_ADDRESS,
1513                                                         (u16)reg->reg, 2,
1514                                                         value, 1);
1515                                 break;
1516                         case 14:        /* Colibri - read dword */
1517                                 ret = cx231xx_write_i2c_data(dev,
1518                                                         Colibri_DEVICE_ADDRESS,
1519                                                         (u16)reg->reg, 2,
1520                                                         value, 4);
1521                                 break;
1522                         case 2: /* Hammerhead - read byte */
1523                                 ret =
1524                                     cx231xx_write_i2c_data(dev,
1525                                                         HAMMERHEAD_I2C_ADDRESS,
1526                                                         (u16)reg->reg, 2,
1527                                                         value, 1);
1528                                 break;
1529                         case 24:        /* Hammerhead - read dword */
1530                                 ret =
1531                                     cx231xx_write_i2c_data(dev,
1532                                                         HAMMERHEAD_I2C_ADDRESS,
1533                                                         (u16)reg->reg, 2,
1534                                                         value, 4);
1535                                 break;
1536                         case 3: /* flatiron - read byte */
1537                                 ret =
1538                                     cx231xx_write_i2c_data(dev,
1539                                                         Flatrion_DEVICE_ADDRESS,
1540                                                         (u16)reg->reg, 1,
1541                                                         value, 1);
1542                                 break;
1543                         case 34:        /* flatiron - read dword */
1544                                 ret =
1545                                     cx231xx_write_i2c_data(dev,
1546                                                         Flatrion_DEVICE_ADDRESS,
1547                                                         (u16)reg->reg, 1,
1548                                                         value, 4);
1549                                 break;
1550                         }
1551                 }
1552                 return ret < 0 ? ret : 0;
1553
1554         default:
1555                 break;
1556         }
1557
1558         mutex_lock(&dev->lock);
1559
1560         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_DBG_S_REGISTER, reg);
1561
1562         mutex_unlock(&dev->lock);
1563
1564         return ret;
1565 }
1566 #endif
1567
1568 static int vidioc_cropcap(struct file *file, void *priv,
1569                           struct v4l2_cropcap *cc)
1570 {
1571         struct cx231xx_fh *fh = priv;
1572         struct cx231xx *dev = fh->dev;
1573
1574         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1575                 return -EINVAL;
1576
1577         cc->bounds.left = 0;
1578         cc->bounds.top = 0;
1579         cc->bounds.width = dev->width;
1580         cc->bounds.height = dev->height;
1581         cc->defrect = cc->bounds;
1582         cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
1583         cc->pixelaspect.denominator = 59;
1584
1585         return 0;
1586 }
1587
1588 static int vidioc_streamon(struct file *file, void *priv,
1589                            enum v4l2_buf_type type)
1590 {
1591         struct cx231xx_fh *fh = priv;
1592         struct cx231xx *dev = fh->dev;
1593         int rc;
1594
1595         rc = check_dev(dev);
1596         if (rc < 0)
1597                 return rc;
1598
1599         mutex_lock(&dev->lock);
1600         rc = res_get(fh);
1601
1602         if (likely(rc >= 0))
1603                 rc = videobuf_streamon(&fh->vb_vidq);
1604
1605         mutex_unlock(&dev->lock);
1606
1607         return rc;
1608 }
1609
1610 static int vidioc_streamoff(struct file *file, void *priv,
1611                             enum v4l2_buf_type type)
1612 {
1613         struct cx231xx_fh *fh = priv;
1614         struct cx231xx *dev = fh->dev;
1615         int rc;
1616
1617         rc = check_dev(dev);
1618         if (rc < 0)
1619                 return rc;
1620
1621         if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
1622             (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1623                 return -EINVAL;
1624         if (type != fh->type)
1625                 return -EINVAL;
1626
1627         mutex_lock(&dev->lock);
1628
1629         videobuf_streamoff(&fh->vb_vidq);
1630         res_free(fh);
1631
1632         mutex_unlock(&dev->lock);
1633
1634         return 0;
1635 }
1636
1637 static int vidioc_querycap(struct file *file, void *priv,
1638                            struct v4l2_capability *cap)
1639 {
1640         struct cx231xx_fh *fh = priv;
1641         struct cx231xx *dev = fh->dev;
1642
1643         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1644         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1645         strlcpy(cap->bus_info, dev_name(&dev->udev->dev),
1646                 sizeof(cap->bus_info));
1647
1648         cap->version = CX231XX_VERSION_CODE;
1649
1650         cap->capabilities = V4L2_CAP_VBI_CAPTURE |
1651 #if 0
1652             V4L2_CAP_SLICED_VBI_CAPTURE |
1653 #endif
1654             V4L2_CAP_VIDEO_CAPTURE |
1655             V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1656
1657         if (dev->tuner_type != TUNER_ABSENT)
1658                 cap->capabilities |= V4L2_CAP_TUNER;
1659
1660         return 0;
1661 }
1662
1663 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1664                                    struct v4l2_fmtdesc *f)
1665 {
1666         if (unlikely(f->index >= ARRAY_SIZE(format)))
1667                 return -EINVAL;
1668
1669         strlcpy(f->description, format[f->index].name, sizeof(f->description));
1670         f->pixelformat = format[f->index].fourcc;
1671
1672         return 0;
1673 }
1674
1675 /* Sliced VBI ioctls */
1676 static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv,
1677                                        struct v4l2_format *f)
1678 {
1679         struct cx231xx_fh *fh = priv;
1680         struct cx231xx *dev = fh->dev;
1681         int rc;
1682
1683         rc = check_dev(dev);
1684         if (rc < 0)
1685                 return rc;
1686
1687         mutex_lock(&dev->lock);
1688
1689         f->fmt.sliced.service_set = 0;
1690
1691         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_FMT, f);
1692
1693         if (f->fmt.sliced.service_set == 0)
1694                 rc = -EINVAL;
1695
1696         mutex_unlock(&dev->lock);
1697         return rc;
1698 }
1699
1700 static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv,
1701                                          struct v4l2_format *f)
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         mutex_lock(&dev->lock);
1712         cx231xx_i2c_call_clients(&dev->i2c_bus[0], VIDIOC_G_FMT, f);
1713         mutex_unlock(&dev->lock);
1714
1715         if (f->fmt.sliced.service_set == 0)
1716                 return -EINVAL;
1717
1718         return 0;
1719 }
1720
1721 /* RAW VBI ioctls */
1722
1723 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1724                                 struct v4l2_format *f)
1725 {
1726         struct cx231xx_fh *fh = priv;
1727         struct cx231xx *dev = fh->dev;
1728
1729         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1730             35468950 : 28636363;
1731         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1732         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1733         f->fmt.vbi.offset = 64 * 4;
1734         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1735             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1736         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1737             PAL_VBI_LINES : NTSC_VBI_LINES;
1738         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1739             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1740         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1741
1742         return 0;
1743
1744 }
1745
1746 static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,
1747                                   struct v4l2_format *f)
1748 {
1749         struct cx231xx_fh *fh = priv;
1750         struct cx231xx *dev = fh->dev;
1751
1752         if (dev->vbi_stream_on && !fh->stream_on) {
1753                 cx231xx_errdev("%s device in use by another fh\n", __func__);
1754                 return -EBUSY;
1755         }
1756
1757         f->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1758         f->fmt.vbi.sampling_rate = (dev->norm & V4L2_STD_625_50) ?
1759             35468950 : 28636363;
1760         f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
1761         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1762         f->fmt.vbi.offset = 244;
1763         f->fmt.vbi.flags = 0;
1764         f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?
1765             PAL_VBI_START_LINE : NTSC_VBI_START_LINE;
1766         f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?
1767             PAL_VBI_LINES : NTSC_VBI_LINES;
1768         f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?
1769             PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;
1770         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1771
1772         return 0;
1773
1774 }
1775
1776 static int vidioc_reqbufs(struct file *file, void *priv,
1777                           struct v4l2_requestbuffers *rb)
1778 {
1779         struct cx231xx_fh *fh = priv;
1780         struct cx231xx *dev = fh->dev;
1781         int rc;
1782
1783         rc = check_dev(dev);
1784         if (rc < 0)
1785                 return rc;
1786
1787         return videobuf_reqbufs(&fh->vb_vidq, rb);
1788 }
1789
1790 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *b)
1791 {
1792         struct cx231xx_fh *fh = priv;
1793         struct cx231xx *dev = fh->dev;
1794         int rc;
1795
1796         rc = check_dev(dev);
1797         if (rc < 0)
1798                 return rc;
1799
1800         return videobuf_querybuf(&fh->vb_vidq, b);
1801 }
1802
1803 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1804 {
1805         struct cx231xx_fh *fh = priv;
1806         struct cx231xx *dev = fh->dev;
1807         int rc;
1808
1809         rc = check_dev(dev);
1810         if (rc < 0)
1811                 return rc;
1812
1813         return videobuf_qbuf(&fh->vb_vidq, b);
1814 }
1815
1816 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1817 {
1818         struct cx231xx_fh *fh = priv;
1819         struct cx231xx *dev = fh->dev;
1820         int rc;
1821
1822         rc = check_dev(dev);
1823         if (rc < 0)
1824                 return rc;
1825
1826         return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1827 }
1828
1829 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1830 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1831 {
1832         struct cx231xx_fh *fh = priv;
1833
1834         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1835 }
1836 #endif
1837
1838 /* ----------------------------------------------------------- */
1839 /* RADIO ESPECIFIC IOCTLS                                      */
1840 /* ----------------------------------------------------------- */
1841
1842 static int radio_querycap(struct file *file, void *priv,
1843                           struct v4l2_capability *cap)
1844 {
1845         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1846
1847         strlcpy(cap->driver, "cx231xx", sizeof(cap->driver));
1848         strlcpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));
1849         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
1850
1851         cap->version = CX231XX_VERSION_CODE;
1852         cap->capabilities = V4L2_CAP_TUNER;
1853         return 0;
1854 }
1855
1856 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1857 {
1858         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1859
1860         if (unlikely(t->index > 0))
1861                 return -EINVAL;
1862
1863         strcpy(t->name, "Radio");
1864         t->type = V4L2_TUNER_RADIO;
1865
1866         mutex_lock(&dev->lock);
1867         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_G_TUNER, t);
1868         mutex_unlock(&dev->lock);
1869
1870         return 0;
1871 }
1872
1873 static int radio_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1874 {
1875         if (i->index != 0)
1876                 return -EINVAL;
1877         strcpy(i->name, "Radio");
1878         i->type = V4L2_INPUT_TYPE_TUNER;
1879
1880         return 0;
1881 }
1882
1883 static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1884 {
1885         if (unlikely(a->index))
1886                 return -EINVAL;
1887
1888         strcpy(a->name, "Radio");
1889         return 0;
1890 }
1891
1892 static int radio_s_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1893 {
1894         struct cx231xx *dev = ((struct cx231xx_fh *)priv)->dev;
1895
1896         if (0 != t->index)
1897                 return -EINVAL;
1898
1899         mutex_lock(&dev->lock);
1900         cx231xx_i2c_call_clients(&dev->i2c_bus[1], VIDIOC_S_TUNER, t);
1901         mutex_unlock(&dev->lock);
1902
1903         return 0;
1904 }
1905
1906 static int radio_s_audio(struct file *file, void *fh, struct v4l2_audio *a)
1907 {
1908         return 0;
1909 }
1910
1911 static int radio_s_input(struct file *file, void *fh, unsigned int i)
1912 {
1913         return 0;
1914 }
1915
1916 static int radio_queryctrl(struct file *file, void *priv,
1917                            struct v4l2_queryctrl *c)
1918 {
1919         int i;
1920
1921         if (c->id < V4L2_CID_BASE || c->id >= V4L2_CID_LASTP1)
1922                 return -EINVAL;
1923         if (c->id == V4L2_CID_AUDIO_MUTE) {
1924                 for (i = 0; i < CX231XX_CTLS; i++)
1925                         if (cx231xx_ctls[i].v.id == c->id)
1926                                 break;
1927                 *c = cx231xx_ctls[i].v;
1928         } else
1929                 *c = no_ctl;
1930         return 0;
1931 }
1932
1933 /*
1934  * cx231xx_v4l2_open()
1935  * inits the device and starts isoc transfer
1936  */
1937 static int cx231xx_v4l2_open(struct file *filp)
1938 {
1939         int minor = video_devdata(filp)->minor;
1940         int errCode = 0, radio = 0;
1941         struct cx231xx *dev = NULL;
1942         struct cx231xx_fh *fh;
1943         enum v4l2_buf_type fh_type = 0;
1944
1945         dev = cx231xx_get_device(minor, &fh_type, &radio);
1946         if (NULL == dev)
1947                 return -ENODEV;
1948
1949         mutex_lock(&dev->lock);
1950
1951         cx231xx_videodbg("open minor=%d type=%s users=%d\n",
1952                          minor, v4l2_type_names[fh_type], dev->users);
1953
1954 #if 0
1955         errCode = cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1956         if (errCode < 0) {
1957                 cx231xx_errdev
1958                     ("Device locked on digital mode. Can't open analog\n");
1959                 mutex_unlock(&dev->lock);
1960                 return -EBUSY;
1961         }
1962 #endif
1963
1964         fh = kzalloc(sizeof(struct cx231xx_fh), GFP_KERNEL);
1965         if (!fh) {
1966                 cx231xx_errdev("cx231xx-video.c: Out of memory?!\n");
1967                 mutex_unlock(&dev->lock);
1968                 return -ENOMEM;
1969         }
1970         fh->dev = dev;
1971         fh->radio = radio;
1972         fh->type = fh_type;
1973         filp->private_data = fh;
1974
1975         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
1976                 dev->width = norm_maxw(dev);
1977                 dev->height = norm_maxh(dev);
1978                 dev->hscale = 0;
1979                 dev->vscale = 0;
1980
1981                 /* Power up in Analog TV mode */
1982                 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);
1983
1984 #if 0
1985                 cx231xx_set_mode(dev, CX231XX_ANALOG_MODE);
1986 #endif
1987                 cx231xx_resolution_set(dev);
1988
1989                 /* set video alternate setting */
1990                 cx231xx_set_video_alternate(dev);
1991
1992                 /* Needed, since GPIO might have disabled power of
1993                    some i2c device */
1994                 cx231xx_config_i2c(dev);
1995
1996                 /* device needs to be initialized before isoc transfer */
1997                 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;
1998                 video_mux(dev, dev->video_input);
1999
2000         }
2001         if (fh->radio) {
2002                 cx231xx_videodbg("video_open: setting radio device\n");
2003
2004                 /* cx231xx_start_radio(dev); */
2005
2006                 cx231xx_i2c_call_clients(&dev->i2c_bus[1], AUDC_SET_RADIO,
2007                                          NULL);
2008         }
2009
2010         dev->users++;
2011
2012         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
2013                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_video_qops,
2014                                             NULL, &dev->video_mode.slock,
2015                                             fh->type, V4L2_FIELD_INTERLACED,
2016                                             sizeof(struct cx231xx_buffer), fh);
2017         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2018                 /* Set the required alternate setting  VBI interface works in
2019                    Bulk mode only */
2020                 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2021
2022                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &cx231xx_vbi_qops,
2023                                             NULL, &dev->vbi_mode.slock,
2024                                             fh->type, V4L2_FIELD_SEQ_TB,
2025                                             sizeof(struct cx231xx_buffer), fh);
2026         }
2027
2028         mutex_unlock(&dev->lock);
2029
2030         return errCode;
2031 }
2032
2033 /*
2034  * cx231xx_realease_resources()
2035  * unregisters the v4l2,i2c and usb devices
2036  * called when the device gets disconected or at module unload
2037 */
2038 void cx231xx_release_analog_resources(struct cx231xx *dev)
2039 {
2040
2041         /*FIXME: I2C IR should be disconnected */
2042
2043         if (dev->radio_dev) {
2044                 if (-1 != dev->radio_dev->minor)
2045                         video_unregister_device(dev->radio_dev);
2046                 else
2047                         video_device_release(dev->radio_dev);
2048                 dev->radio_dev = NULL;
2049         }
2050         if (dev->vbi_dev) {
2051                 cx231xx_info("V4L2 device /dev/vbi%d deregistered\n",
2052                              dev->vbi_dev->num);
2053                 if (-1 != dev->vbi_dev->minor)
2054                         video_unregister_device(dev->vbi_dev);
2055                 else
2056                         video_device_release(dev->vbi_dev);
2057                 dev->vbi_dev = NULL;
2058         }
2059         if (dev->vdev) {
2060                 cx231xx_info("V4L2 device /dev/video%d deregistered\n",
2061                              dev->vdev->num);
2062                 if (-1 != dev->vdev->minor)
2063                         video_unregister_device(dev->vdev);
2064                 else
2065                         video_device_release(dev->vdev);
2066                 dev->vdev = NULL;
2067         }
2068 }
2069
2070 /*
2071  * cx231xx_v4l2_close()
2072  * stops streaming and deallocates all resources allocated by the v4l2
2073  * calls and ioctls
2074  */
2075 static int cx231xx_v4l2_close(struct file *filp)
2076 {
2077         struct cx231xx_fh *fh = filp->private_data;
2078         struct cx231xx *dev = fh->dev;
2079
2080         cx231xx_videodbg("users=%d\n", dev->users);
2081
2082         mutex_lock(&dev->lock);
2083
2084         if (res_check(fh))
2085                 res_free(fh);
2086
2087         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
2088                 videobuf_stop(&fh->vb_vidq);
2089                 videobuf_mmap_free(&fh->vb_vidq);
2090
2091                 /* the device is already disconnect,
2092                    free the remaining resources */
2093                 if (dev->state & DEV_DISCONNECTED) {
2094                         cx231xx_release_resources(dev);
2095                         mutex_unlock(&dev->lock);
2096                         kfree(dev);
2097                         return 0;
2098                 }
2099
2100                 /* do this before setting alternate! */
2101                 cx231xx_uninit_vbi_isoc(dev);
2102
2103                 /* set alternate 0 */
2104                 if (!dev->vbi_or_sliced_cc_mode)
2105                         cx231xx_set_alt_setting(dev, INDEX_VANC, 0);
2106                 else
2107                         cx231xx_set_alt_setting(dev, INDEX_HANC, 0);
2108
2109                 kfree(fh);
2110                 dev->users--;
2111                 wake_up_interruptible_nr(&dev->open, 1);
2112                 mutex_unlock(&dev->lock);
2113                 return 0;
2114         }
2115
2116         if (dev->users == 1) {
2117                 videobuf_stop(&fh->vb_vidq);
2118                 videobuf_mmap_free(&fh->vb_vidq);
2119
2120                 /* the device is already disconnect,
2121                    free the remaining resources */
2122                 if (dev->state & DEV_DISCONNECTED) {
2123                         cx231xx_release_resources(dev);
2124                         mutex_unlock(&dev->lock);
2125                         kfree(dev);
2126                         return 0;
2127                 }
2128
2129                 /* Save some power by putting tuner to sleep */
2130                 cx231xx_i2c_call_clients(&dev->i2c_bus[1], TUNER_SET_STANDBY,
2131                                          NULL);
2132
2133                 /* do this before setting alternate! */
2134                 cx231xx_uninit_isoc(dev);
2135                 cx231xx_set_mode(dev, CX231XX_SUSPEND);
2136
2137                 /* set alternate 0 */
2138                 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);
2139         }
2140         kfree(fh);
2141         dev->users--;
2142         wake_up_interruptible_nr(&dev->open, 1);
2143         mutex_unlock(&dev->lock);
2144         return 0;
2145 }
2146
2147 /*
2148  * cx231xx_v4l2_read()
2149  * will allocate buffers when called for the first time
2150  */
2151 static ssize_t
2152 cx231xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
2153                   loff_t *pos)
2154 {
2155         struct cx231xx_fh *fh = filp->private_data;
2156         struct cx231xx *dev = fh->dev;
2157         int rc;
2158
2159         rc = check_dev(dev);
2160         if (rc < 0)
2161                 return rc;
2162
2163         if ((fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
2164             (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)) {
2165                 mutex_lock(&dev->lock);
2166                 rc = res_get(fh);
2167                 mutex_unlock(&dev->lock);
2168
2169                 if (unlikely(rc < 0))
2170                         return rc;
2171
2172                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
2173                                             filp->f_flags & O_NONBLOCK);
2174         }
2175         return 0;
2176 }
2177
2178 /*
2179  * cx231xx_v4l2_poll()
2180  * will allocate buffers when called for the first time
2181  */
2182 static unsigned int cx231xx_v4l2_poll(struct file *filp, poll_table * wait)
2183 {
2184         struct cx231xx_fh *fh = filp->private_data;
2185         struct cx231xx *dev = fh->dev;
2186         int rc;
2187
2188         rc = check_dev(dev);
2189         if (rc < 0)
2190                 return rc;
2191
2192         mutex_lock(&dev->lock);
2193         rc = res_get(fh);
2194         mutex_unlock(&dev->lock);
2195
2196         if (unlikely(rc < 0))
2197                 return POLLERR;
2198
2199         if ((V4L2_BUF_TYPE_VIDEO_CAPTURE == fh->type) ||
2200             (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type))
2201                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
2202         else
2203                 return POLLERR;
2204 }
2205
2206 /*
2207  * cx231xx_v4l2_mmap()
2208  */
2209 static int cx231xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
2210 {
2211         struct cx231xx_fh *fh = filp->private_data;
2212         struct cx231xx *dev = fh->dev;
2213         int rc;
2214
2215         rc = check_dev(dev);
2216         if (rc < 0)
2217                 return rc;
2218
2219         mutex_lock(&dev->lock);
2220         rc = res_get(fh);
2221         mutex_unlock(&dev->lock);
2222
2223         if (unlikely(rc < 0))
2224                 return rc;
2225
2226         rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
2227
2228         cx231xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2229                          (unsigned long)vma->vm_start,
2230                          (unsigned long)vma->vm_end -
2231                          (unsigned long)vma->vm_start, rc);
2232
2233         return rc;
2234 }
2235
2236 static const struct v4l2_file_operations cx231xx_v4l_fops = {
2237         .owner   = THIS_MODULE,
2238         .open    = cx231xx_v4l2_open,
2239         .release = cx231xx_v4l2_close,
2240         .read    = cx231xx_v4l2_read,
2241         .poll    = cx231xx_v4l2_poll,
2242         .mmap    = cx231xx_v4l2_mmap,
2243         .ioctl   = video_ioctl2,
2244 };
2245
2246 static const struct v4l2_ioctl_ops video_ioctl_ops = {
2247         .vidioc_querycap               = vidioc_querycap,
2248         .vidioc_enum_fmt_vid_cap       = vidioc_enum_fmt_vid_cap,
2249         .vidioc_g_fmt_vid_cap          = vidioc_g_fmt_vid_cap,
2250         .vidioc_try_fmt_vid_cap        = vidioc_try_fmt_vid_cap,
2251         .vidioc_s_fmt_vid_cap          = vidioc_s_fmt_vid_cap,
2252         .vidioc_g_fmt_vbi_cap          = vidioc_g_fmt_vbi_cap,
2253         .vidioc_try_fmt_vbi_cap        = vidioc_try_fmt_vbi_cap,
2254         .vidioc_s_fmt_vbi_cap          = vidioc_try_fmt_vbi_cap,
2255         .vidioc_g_audio                =  vidioc_g_audio,
2256         .vidioc_s_audio                = vidioc_s_audio,
2257         .vidioc_cropcap                = vidioc_cropcap,
2258         .vidioc_g_fmt_sliced_vbi_cap   = vidioc_g_fmt_sliced_vbi_cap,
2259         .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap,
2260         .vidioc_reqbufs                = vidioc_reqbufs,
2261         .vidioc_querybuf               = vidioc_querybuf,
2262         .vidioc_qbuf                   = vidioc_qbuf,
2263         .vidioc_dqbuf                  = vidioc_dqbuf,
2264         .vidioc_s_std                  = vidioc_s_std,
2265         .vidioc_g_std                  = vidioc_g_std,
2266         .vidioc_enum_input             = vidioc_enum_input,
2267         .vidioc_g_input                = vidioc_g_input,
2268         .vidioc_s_input                = vidioc_s_input,
2269         .vidioc_queryctrl              = vidioc_queryctrl,
2270         .vidioc_g_ctrl                 = vidioc_g_ctrl,
2271         .vidioc_s_ctrl                 = vidioc_s_ctrl,
2272         .vidioc_streamon               = vidioc_streamon,
2273         .vidioc_streamoff              = vidioc_streamoff,
2274         .vidioc_g_tuner                = vidioc_g_tuner,
2275         .vidioc_s_tuner                = vidioc_s_tuner,
2276         .vidioc_g_frequency            = vidioc_g_frequency,
2277         .vidioc_s_frequency            = vidioc_s_frequency,
2278 #ifdef CONFIG_VIDEO_ADV_DEBUG
2279         .vidioc_g_register             = vidioc_g_register,
2280         .vidioc_s_register             = vidioc_s_register,
2281 #endif
2282 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2283         .vidiocgmbuf                   = vidiocgmbuf,
2284 #endif
2285 };
2286
2287 static struct video_device cx231xx_vbi_template;
2288
2289 static const struct video_device cx231xx_video_template = {
2290         .fops         = &cx231xx_v4l_fops,
2291         .release      = video_device_release,
2292         .ioctl_ops    = &video_ioctl_ops,
2293         .minor        = -1,
2294         .tvnorms      = V4L2_STD_ALL,
2295         .current_norm = V4L2_STD_PAL,
2296 };
2297
2298 static const struct v4l2_file_operations radio_fops = {
2299         .owner   = THIS_MODULE,
2300         .open   = cx231xx_v4l2_open,
2301         .release = cx231xx_v4l2_close,
2302         .ioctl   = video_ioctl2,
2303 };
2304
2305 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2306         .vidioc_querycap    = radio_querycap,
2307         .vidioc_g_tuner     = radio_g_tuner,
2308         .vidioc_enum_input  = radio_enum_input,
2309         .vidioc_g_audio     = radio_g_audio,
2310         .vidioc_s_tuner     = radio_s_tuner,
2311         .vidioc_s_audio     = radio_s_audio,
2312         .vidioc_s_input     = radio_s_input,
2313         .vidioc_queryctrl   = radio_queryctrl,
2314         .vidioc_g_ctrl      = vidioc_g_ctrl,
2315         .vidioc_s_ctrl      = vidioc_s_ctrl,
2316         .vidioc_g_frequency = vidioc_g_frequency,
2317         .vidioc_s_frequency = vidioc_s_frequency,
2318 #ifdef CONFIG_VIDEO_ADV_DEBUG
2319         .vidioc_g_register  = vidioc_g_register,
2320         .vidioc_s_register  = vidioc_s_register,
2321 #endif
2322 };
2323
2324 static struct video_device cx231xx_radio_template = {
2325         .name      = "cx231xx-radio",
2326         .fops      = &radio_fops,
2327         .ioctl_ops = &radio_ioctl_ops,
2328         .minor     = -1,
2329 };
2330
2331 /******************************** usb interface ******************************/
2332
2333 static struct video_device *cx231xx_vdev_init(struct cx231xx *dev, const struct video_device
2334                                               *template, const char *type_name)
2335 {
2336         struct video_device *vfd;
2337
2338         vfd = video_device_alloc();
2339         if (NULL == vfd)
2340                 return NULL;
2341
2342         *vfd = *template;
2343         vfd->minor = -1;
2344         vfd->parent = &dev->udev->dev;
2345         vfd->release = video_device_release;
2346         vfd->debug = video_debug;
2347
2348         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
2349
2350         return vfd;
2351 }
2352
2353 int cx231xx_register_analog_devices(struct cx231xx *dev)
2354 {
2355         int ret;
2356
2357         cx231xx_info("%s()\n", __func__);
2358
2359         cx231xx_info("%s: v4l2 driver version %d.%d.%d\n",
2360                      dev->name,
2361                      (CX231XX_VERSION_CODE >> 16) & 0xff,
2362                      (CX231XX_VERSION_CODE >> 8) & 0xff,
2363                      CX231XX_VERSION_CODE & 0xff);
2364
2365         /* set default norm */
2366         /*dev->norm = cx231xx_video_template.current_norm; */
2367         dev->width = norm_maxw(dev);
2368         dev->height = norm_maxh(dev);
2369         dev->interlaced = 0;
2370         dev->hscale = 0;
2371         dev->vscale = 0;
2372
2373         /* Analog specific initialization */
2374         dev->format = &format[0];
2375         /* video_mux(dev, dev->video_input); */
2376
2377         /* Audio defaults */
2378         dev->mute = 1;
2379         dev->volume = 0x1f;
2380
2381         /* enable vbi capturing */
2382         /* write code here...  */
2383
2384         /* allocate and fill video video_device struct */
2385         dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
2386         if (!dev->vdev) {
2387                 cx231xx_errdev("cannot allocate video_device.\n");
2388                 return -ENODEV;
2389         }
2390
2391         /* register v4l2 video video_device */
2392         ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
2393                                     video_nr[dev->devno]);
2394         if (ret) {
2395                 cx231xx_errdev("unable to register video device (error=%i).\n",
2396                                ret);
2397                 return ret;
2398         }
2399
2400         cx231xx_info("%s/0: registered device video%d [v4l2]\n",
2401                      dev->name, dev->vdev->num);
2402
2403         /* Initialize VBI template */
2404         memcpy(&cx231xx_vbi_template, &cx231xx_video_template,
2405                sizeof(cx231xx_vbi_template));
2406         strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
2407
2408         /* Allocate and fill vbi video_device struct */
2409         dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
2410
2411         /* register v4l2 vbi video_device */
2412         ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
2413                                     vbi_nr[dev->devno]);
2414         if (ret < 0) {
2415                 cx231xx_errdev("unable to register vbi device\n");
2416                 return ret;
2417         }
2418
2419         cx231xx_info("%s/0: registered device vbi%d\n",
2420                      dev->name, dev->vbi_dev->num);
2421
2422         if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
2423                 dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
2424                                                    "radio");
2425                 if (!dev->radio_dev) {
2426                         cx231xx_errdev("cannot allocate video_device.\n");
2427                         return -ENODEV;
2428                 }
2429                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
2430                                             radio_nr[dev->devno]);
2431                 if (ret < 0) {
2432                         cx231xx_errdev("can't register radio device\n");
2433                         return ret;
2434                 }
2435                 cx231xx_info("Registered radio device as /dev/radio%d\n",
2436                              dev->radio_dev->num);
2437         }
2438
2439         cx231xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2440                      dev->vdev->num, dev->vbi_dev->num);
2441
2442         return 0;
2443 }