drivers/media/pci/saa7164/saa7164-vbi.c

   1 /*
   2  *  Driver for the NXP SAA7164 PCIe bridge
   3  *
   4  *  Copyright (c) 2010 Steven Toth <stoth@kernellabs.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include "saa7164.h"
  23
  24 static struct saa7164_tvnorm saa7164_tvnorms[] = {
  25         {
  26                 .name      = "NTSC-M",
  27                 .id        = V4L2_STD_NTSC_M,
  28         }, {
  29                 .name      = "NTSC-JP",
  30                 .id        = V4L2_STD_NTSC_M_JP,
  31         }
  32 };
  33
  34 static const u32 saa7164_v4l2_ctrls[] = {
  35         0
  36 };
  37
  38 /* Take the encoder configuration from the port struct and
  39  * flush it to the hardware.
  40  */
  41 static void saa7164_vbi_configure(struct saa7164_port *port)
  42 {
  43         struct saa7164_dev *dev = port->dev;
  44         dprintk(DBGLVL_VBI, "%s()\n", __func__);
  45
  46         port->vbi_params.width = port->width;
  47         port->vbi_params.height = port->height;
  48         port->vbi_params.is_50hz =
  49                 (port->encodernorm.id & V4L2_STD_625_50) != 0;
  50
  51         /* Set up the DIF (enable it) for analog mode by default */
  52         saa7164_api_initialize_dif(port);
  53
  54         /* Configure the correct video standard */
  55 #if 0
  56         saa7164_api_configure_dif(port, port->encodernorm.id);
  57 #endif
  58
  59 #if 0
  60         /* Ensure the audio decoder is correct configured */
  61         saa7164_api_set_audio_std(port);
  62 #endif
  63         dprintk(DBGLVL_VBI, "%s() ends\n", __func__);
  64 }
  65
  66 static int saa7164_vbi_buffers_dealloc(struct saa7164_port *port)
  67 {
  68         struct list_head *c, *n, *p, *q, *l, *v;
  69         struct saa7164_dev *dev = port->dev;
  70         struct saa7164_buffer *buf;
  71         struct saa7164_user_buffer *ubuf;
  72
  73         /* Remove any allocated buffers */
  74         mutex_lock(&port->dmaqueue_lock);
  75
  76         dprintk(DBGLVL_VBI, "%s(port=%d) dmaqueue\n", __func__, port->nr);
  77         list_for_each_safe(c, n, &port->dmaqueue.list) {
  78                 buf = list_entry(c, struct saa7164_buffer, list);
  79                 list_del(c);
  80                 saa7164_buffer_dealloc(buf);
  81         }
  82
  83         dprintk(DBGLVL_VBI, "%s(port=%d) used\n", __func__, port->nr);
  84         list_for_each_safe(p, q, &port->list_buf_used.list) {
  85                 ubuf = list_entry(p, struct saa7164_user_buffer, list);
  86                 list_del(p);
  87                 saa7164_buffer_dealloc_user(ubuf);
  88         }
  89
  90         dprintk(DBGLVL_VBI, "%s(port=%d) free\n", __func__, port->nr);
  91         list_for_each_safe(l, v, &port->list_buf_free.list) {
  92                 ubuf = list_entry(l, struct saa7164_user_buffer, list);
  93                 list_del(l);
  94                 saa7164_buffer_dealloc_user(ubuf);
  95         }
  96
  97         mutex_unlock(&port->dmaqueue_lock);
  98         dprintk(DBGLVL_VBI, "%s(port=%d) done\n", __func__, port->nr);
  99
 100         return 0;
 101 }
 102
 103 /* Dynamic buffer switch at vbi start time */
 104 static int saa7164_vbi_buffers_alloc(struct saa7164_port *port)
 105 {
 106         struct saa7164_dev *dev = port->dev;
 107         struct saa7164_buffer *buf;
 108         struct saa7164_user_buffer *ubuf;
 109         struct tmHWStreamParameters *params = &port->hw_streamingparams;
 110         int result = -ENODEV, i;
 111         int len = 0;
 112
 113         dprintk(DBGLVL_VBI, "%s()\n", __func__);
 114
 115         /* TODO: NTSC SPECIFIC */
 116         /* Init and establish defaults */
 117         params->samplesperline = 1440;
 118         params->numberoflines = 12;
 119         params->numberoflines = 18;
 120         params->pitch = 1600;
 121         params->pitch = 1440;
 122         params->numpagetables = 2 +
 123                 ((params->numberoflines * params->pitch) / PAGE_SIZE);
 124         params->bitspersample = 8;
 125         params->linethreshold = 0;
 126         params->pagetablelistvirt = NULL;
 127         params->pagetablelistphys = NULL;
 128         params->numpagetableentries = port->hwcfg.buffercount;
 129
 130         /* Allocate the PCI resources, buffers (hard) */
 131         for (i = 0; i < port->hwcfg.buffercount; i++) {
 132                 buf = saa7164_buffer_alloc(port,
 133                         params->numberoflines *
 134                         params->pitch);
 135
 136                 if (!buf) {
 137                         printk(KERN_ERR "%s() failed "
 138                                "(errno = %d), unable to allocate buffer\n",
 139                                 __func__, result);
 140                         result = -ENOMEM;
 141                         goto failed;
 142                 } else {
 143
 144                         mutex_lock(&port->dmaqueue_lock);
 145                         list_add_tail(&buf->list, &port->dmaqueue.list);
 146                         mutex_unlock(&port->dmaqueue_lock);
 147
 148                 }
 149         }
 150
 151         /* Allocate some kernel buffers for copying
 152          * to userpsace.
 153          */
 154         len = params->numberoflines * params->pitch;
 155
 156         if (vbi_buffers < 16)
 157                 vbi_buffers = 16;
 158         if (vbi_buffers > 512)
 159                 vbi_buffers = 512;
 160
 161         for (i = 0; i < vbi_buffers; i++) {
 162
 163                 ubuf = saa7164_buffer_alloc_user(dev, len);
 164                 if (ubuf) {
 165                         mutex_lock(&port->dmaqueue_lock);
 166                         list_add_tail(&ubuf->list, &port->list_buf_free.list);
 167                         mutex_unlock(&port->dmaqueue_lock);
 168                 }
 169
 170         }
 171
 172         result = 0;
 173
 174 failed:
 175         return result;
 176 }
 177
 178
 179 static int saa7164_vbi_initialize(struct saa7164_port *port)
 180 {
 181         saa7164_vbi_configure(port);
 182         return 0;
 183 }
 184
 185 /* -- V4L2 --------------------------------------------------------- */
 186 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
 187 {
 188         struct saa7164_vbi_fh *fh = file->private_data;
 189         struct saa7164_port *port = fh->port;
 190         struct saa7164_dev *dev = port->dev;
 191         unsigned int i;
 192
 193         dprintk(DBGLVL_VBI, "%s(id=0x%x)\n", __func__, (u32)*id);
 194
 195         for (i = 0; i < ARRAY_SIZE(saa7164_tvnorms); i++) {
 196                 if (*id & saa7164_tvnorms[i].id)
 197                         break;
 198         }
 199         if (i == ARRAY_SIZE(saa7164_tvnorms))
 200                 return -EINVAL;
 201
 202         port->encodernorm = saa7164_tvnorms[i];
 203
 204         /* Update the audio decoder while is not running in
 205          * auto detect mode.
 206          */
 207         saa7164_api_set_audio_std(port);
 208
 209         dprintk(DBGLVL_VBI, "%s(id=0x%x) OK\n", __func__, (u32)*id);
 210
 211         return 0;
 212 }
 213
 214 static int vidioc_enum_input(struct file *file, void *priv,
 215         struct v4l2_input *i)
 216 {
 217         int n;
 218
 219         char *inputs[] = { "tuner", "composite", "svideo", "aux",
 220                 "composite 2", "svideo 2", "aux 2" };
 221
 222         if (i->index >= 7)
 223                 return -EINVAL;
 224
 225         strcpy(i->name, inputs[i->index]);
 226
 227         if (i->index == 0)
 228                 i->type = V4L2_INPUT_TYPE_TUNER;
 229         else
 230                 i->type  = V4L2_INPUT_TYPE_CAMERA;
 231
 232         for (n = 0; n < ARRAY_SIZE(saa7164_tvnorms); n++)
 233                 i->std |= saa7164_tvnorms[n].id;
 234
 235         return 0;
 236 }
 237
 238 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 239 {
 240         struct saa7164_vbi_fh *fh = file->private_data;
 241         struct saa7164_port *port = fh->port;
 242         struct saa7164_dev *dev = port->dev;
 243
 244         if (saa7164_api_get_videomux(port) != SAA_OK)
 245                 return -EIO;
 246
 247         *i = (port->mux_input - 1);
 248
 249         dprintk(DBGLVL_VBI, "%s() input=%d\n", __func__, *i);
 250
 251         return 0;
 252 }
 253
 254 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
 255 {
 256         struct saa7164_vbi_fh *fh = file->private_data;
 257         struct saa7164_port *port = fh->port;
 258         struct saa7164_dev *dev = port->dev;
 259
 260         dprintk(DBGLVL_VBI, "%s() input=%d\n", __func__, i);
 261
 262         if (i >= 7)
 263                 return -EINVAL;
 264
 265         port->mux_input = i + 1;
 266
 267         if (saa7164_api_set_videomux(port) != SAA_OK)
 268                 return -EIO;
 269
 270         return 0;
 271 }
 272
 273 static int vidioc_g_tuner(struct file *file, void *priv,
 274         struct v4l2_tuner *t)
 275 {
 276         struct saa7164_vbi_fh *fh = file->private_data;
 277         struct saa7164_port *port = fh->port;
 278         struct saa7164_dev *dev = port->dev;
 279
 280         if (0 != t->index)
 281                 return -EINVAL;
 282
 283         strcpy(t->name, "tuner");
 284         t->type = V4L2_TUNER_ANALOG_TV;
 285         t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
 286
 287         dprintk(DBGLVL_VBI, "VIDIOC_G_TUNER: tuner type %d\n", t->type);
 288
 289         return 0;
 290 }
 291
 292 static int vidioc_s_tuner(struct file *file, void *priv,
 293         struct v4l2_tuner *t)
 294 {
 295         /* Update the A/V core */
 296         return 0;
 297 }
 298
 299 static int vidioc_g_frequency(struct file *file, void *priv,
 300         struct v4l2_frequency *f)
 301 {
 302         struct saa7164_vbi_fh *fh = file->private_data;
 303         struct saa7164_port *port = fh->port;
 304
 305         f->type = V4L2_TUNER_ANALOG_TV;
 306         f->frequency = port->freq;
 307
 308         return 0;
 309 }
 310
 311 static int vidioc_s_frequency(struct file *file, void *priv,
 312         struct v4l2_frequency *f)
 313 {
 314         struct saa7164_vbi_fh *fh = file->private_data;
 315         struct saa7164_port *port = fh->port;
 316         struct saa7164_dev *dev = port->dev;
 317         struct saa7164_port *tsport;
 318         struct dvb_frontend *fe;
 319
 320         /* TODO: Pull this for the std */
 321         struct analog_parameters params = {
 322                 .mode      = V4L2_TUNER_ANALOG_TV,
 323                 .audmode   = V4L2_TUNER_MODE_STEREO,
 324                 .std       = port->encodernorm.id,
 325                 .frequency = f->frequency
 326         };
 327
 328         /* Stop the encoder */
 329         dprintk(DBGLVL_VBI, "%s() frequency=%d tuner=%d\n", __func__,
 330                 f->frequency, f->tuner);
 331
 332         if (f->tuner != 0)
 333                 return -EINVAL;
 334
 335         if (f->type != V4L2_TUNER_ANALOG_TV)
 336                 return -EINVAL;
 337
 338         port->freq = f->frequency;
 339
 340         /* Update the hardware */
 341         if (port->nr == SAA7164_PORT_VBI1)
 342                 tsport = &dev->ports[SAA7164_PORT_TS1];
 343         else
 344         if (port->nr == SAA7164_PORT_VBI2)
 345                 tsport = &dev->ports[SAA7164_PORT_TS2];
 346         else
 347                 BUG();
 348
 349         fe = tsport->dvb.frontend;
 350
 351         if (fe && fe->ops.tuner_ops.set_analog_params)
 352                 fe->ops.tuner_ops.set_analog_params(fe, &params);
 353         else
 354                 printk(KERN_ERR "%s() No analog tuner, aborting\n", __func__);
 355
 356         saa7164_vbi_initialize(port);
 357
 358         return 0;
 359 }
 360
 361 static int vidioc_g_ctrl(struct file *file, void *priv,
 362         struct v4l2_control *ctl)
 363 {
 364         struct saa7164_vbi_fh *fh = file->private_data;
 365         struct saa7164_port *port = fh->port;
 366         struct saa7164_dev *dev = port->dev;
 367
 368         dprintk(DBGLVL_VBI, "%s(id=%d, value=%d)\n", __func__,
 369                 ctl->id, ctl->value);
 370
 371         switch (ctl->id) {
 372         case V4L2_CID_BRIGHTNESS:
 373                 ctl->value = port->ctl_brightness;
 374                 break;
 375         case V4L2_CID_CONTRAST:
 376                 ctl->value = port->ctl_contrast;
 377                 break;
 378         case V4L2_CID_SATURATION:
 379                 ctl->value = port->ctl_saturation;
 380                 break;
 381         case V4L2_CID_HUE:
 382                 ctl->value = port->ctl_hue;
 383                 break;
 384         case V4L2_CID_SHARPNESS:
 385                 ctl->value = port->ctl_sharpness;
 386                 break;
 387         case V4L2_CID_AUDIO_VOLUME:
 388                 ctl->value = port->ctl_volume;
 389                 break;
 390         default:
 391                 return -EINVAL;
 392         }
 393
 394         return 0;
 395 }
 396
 397 static int vidioc_s_ctrl(struct file *file, void *priv,
 398         struct v4l2_control *ctl)
 399 {
 400         struct saa7164_vbi_fh *fh = file->private_data;
 401         struct saa7164_port *port = fh->port;
 402         struct saa7164_dev *dev = port->dev;
 403         int ret = 0;
 404
 405         dprintk(DBGLVL_VBI, "%s(id=%d, value=%d)\n", __func__,
 406                 ctl->id, ctl->value);
 407
 408         switch (ctl->id) {
 409         case V4L2_CID_BRIGHTNESS:
 410                 if ((ctl->value >= 0) && (ctl->value <= 255)) {
 411                         port->ctl_brightness = ctl->value;
 412                         saa7164_api_set_usercontrol(port,
 413                                 PU_BRIGHTNESS_CONTROL);
 414                 } else
 415                         ret = -EINVAL;
 416                 break;
 417         case V4L2_CID_CONTRAST:
 418                 if ((ctl->value >= 0) && (ctl->value <= 255)) {
 419                         port->ctl_contrast = ctl->value;
 420                         saa7164_api_set_usercontrol(port, PU_CONTRAST_CONTROL);
 421                 } else
 422                         ret = -EINVAL;
 423                 break;
 424         case V4L2_CID_SATURATION:
 425                 if ((ctl->value >= 0) && (ctl->value <= 255)) {
 426                         port->ctl_saturation = ctl->value;
 427                         saa7164_api_set_usercontrol(port,
 428                                 PU_SATURATION_CONTROL);
 429                 } else
 430                         ret = -EINVAL;
 431                 break;
 432         case V4L2_CID_HUE:
 433                 if ((ctl->value >= 0) && (ctl->value <= 255)) {
 434                         port->ctl_hue = ctl->value;
 435                         saa7164_api_set_usercontrol(port, PU_HUE_CONTROL);
 436                 } else
 437                         ret = -EINVAL;
 438                 break;
 439         case V4L2_CID_SHARPNESS:
 440                 if ((ctl->value >= 0) && (ctl->value <= 255)) {
 441                         port->ctl_sharpness = ctl->value;
 442                         saa7164_api_set_usercontrol(port, PU_SHARPNESS_CONTROL);
 443                 } else
 444                         ret = -EINVAL;
 445                 break;
 446         case V4L2_CID_AUDIO_VOLUME:
 447                 if ((ctl->value >= -83) && (ctl->value <= 24)) {
 448                         port->ctl_volume = ctl->value;
 449                         saa7164_api_set_audio_volume(port, port->ctl_volume);
 450                 } else
 451                         ret = -EINVAL;
 452                 break;
 453         default:
 454                 ret = -EINVAL;
 455         }
 456
 457         return ret;
 458 }
 459
 460 static int saa7164_get_ctrl(struct saa7164_port *port,
 461         struct v4l2_ext_control *ctrl)
 462 {
 463         struct saa7164_vbi_params *params = &port->vbi_params;
 464
 465         switch (ctrl->id) {
 466         case V4L2_CID_MPEG_STREAM_TYPE:
 467                 ctrl->value = params->stream_type;
 468                 break;
 469         case V4L2_CID_MPEG_AUDIO_MUTE:
 470                 ctrl->value = params->ctl_mute;
 471                 break;
 472         case V4L2_CID_MPEG_VIDEO_ASPECT:
 473                 ctrl->value = params->ctl_aspect;
 474                 break;
 475         case V4L2_CID_MPEG_VIDEO_B_FRAMES:
 476                 ctrl->value = params->refdist;
 477                 break;
 478         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
 479                 ctrl->value = params->gop_size;
 480                 break;
 481         default:
 482                 return -EINVAL;
 483         }
 484         return 0;
 485 }
 486
 487 static int vidioc_g_ext_ctrls(struct file *file, void *priv,
 488         struct v4l2_ext_controls *ctrls)
 489 {
 490         struct saa7164_vbi_fh *fh = file->private_data;
 491         struct saa7164_port *port = fh->port;
 492         int i, err = 0;
 493
 494         if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 495                 for (i = 0; i < ctrls->count; i++) {
 496                         struct v4l2_ext_control *ctrl = ctrls->controls + i;
 497
 498                         err = saa7164_get_ctrl(port, ctrl);
 499                         if (err) {
 500                                 ctrls->error_idx = i;
 501                                 break;
 502                         }
 503                 }
 504                 return err;
 505
 506         }
 507
 508         return -EINVAL;
 509 }
 510
 511 static int saa7164_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
 512 {
 513         int ret = -EINVAL;
 514
 515         switch (ctrl->id) {
 516         case V4L2_CID_MPEG_STREAM_TYPE:
 517                 if ((ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_PS) ||
 518                         (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS))
 519                         ret = 0;
 520                 break;
 521         case V4L2_CID_MPEG_AUDIO_MUTE:
 522                 if ((ctrl->value >= 0) &&
 523                         (ctrl->value <= 1))
 524                         ret = 0;
 525                 break;
 526         case V4L2_CID_MPEG_VIDEO_ASPECT:
 527                 if ((ctrl->value >= V4L2_MPEG_VIDEO_ASPECT_1x1) &&
 528                         (ctrl->value <= V4L2_MPEG_VIDEO_ASPECT_221x100))
 529                         ret = 0;
 530                 break;
 531         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
 532                 if ((ctrl->value >= 0) &&
 533                         (ctrl->value <= 255))
 534                         ret = 0;
 535                 break;
 536         case V4L2_CID_MPEG_VIDEO_B_FRAMES:
 537                 if ((ctrl->value >= 1) &&
 538                         (ctrl->value <= 3))
 539                         ret = 0;
 540                 break;
 541         default:
 542                 ret = -EINVAL;
 543         }
 544
 545         return ret;
 546 }
 547
 548 static int vidioc_try_ext_ctrls(struct file *file, void *priv,
 549         struct v4l2_ext_controls *ctrls)
 550 {
 551         int i, err = 0;
 552
 553         if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 554                 for (i = 0; i < ctrls->count; i++) {
 555                         struct v4l2_ext_control *ctrl = ctrls->controls + i;
 556
 557                         err = saa7164_try_ctrl(ctrl, 0);
 558                         if (err) {
 559                                 ctrls->error_idx = i;
 560                                 break;
 561                         }
 562                 }
 563                 return err;
 564         }
 565
 566         return -EINVAL;
 567 }
 568
 569 static int saa7164_set_ctrl(struct saa7164_port *port,
 570         struct v4l2_ext_control *ctrl)
 571 {
 572         struct saa7164_vbi_params *params = &port->vbi_params;
 573         int ret = 0;
 574
 575         switch (ctrl->id) {
 576         case V4L2_CID_MPEG_STREAM_TYPE:
 577                 params->stream_type = ctrl->value;
 578                 break;
 579         case V4L2_CID_MPEG_AUDIO_MUTE:
 580                 params->ctl_mute = ctrl->value;
 581                 ret = saa7164_api_audio_mute(port, params->ctl_mute);
 582                 if (ret != SAA_OK) {
 583                         printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
 584                                 ret);
 585                         ret = -EIO;
 586                 }
 587                 break;
 588         case V4L2_CID_MPEG_VIDEO_ASPECT:
 589                 params->ctl_aspect = ctrl->value;
 590                 ret = saa7164_api_set_aspect_ratio(port);
 591                 if (ret != SAA_OK) {
 592                         printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
 593                                 ret);
 594                         ret = -EIO;
 595                 }
 596                 break;
 597         case V4L2_CID_MPEG_VIDEO_B_FRAMES:
 598                 params->refdist = ctrl->value;
 599                 break;
 600         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
 601                 params->gop_size = ctrl->value;
 602                 break;
 603         default:
 604                 return -EINVAL;
 605         }
 606
 607         /* TODO: Update the hardware */
 608
 609         return ret;
 610 }
 611
 612 static int vidioc_s_ext_ctrls(struct file *file, void *priv,
 613         struct v4l2_ext_controls *ctrls)
 614 {
 615         struct saa7164_vbi_fh *fh = file->private_data;
 616         struct saa7164_port *port = fh->port;
 617         int i, err = 0;
 618
 619         if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 620                 for (i = 0; i < ctrls->count; i++) {
 621                         struct v4l2_ext_control *ctrl = ctrls->controls + i;
 622
 623                         err = saa7164_try_ctrl(ctrl, 0);
 624                         if (err) {
 625                                 ctrls->error_idx = i;
 626                                 break;
 627                         }
 628                         err = saa7164_set_ctrl(port, ctrl);
 629                         if (err) {
 630                                 ctrls->error_idx = i;
 631                                 break;
 632                         }
 633                 }
 634                 return err;
 635
 636         }
 637
 638         return -EINVAL;
 639 }
 640
 641 static int vidioc_querycap(struct file *file, void  *priv,
 642         struct v4l2_capability *cap)
 643 {
 644         struct saa7164_vbi_fh *fh = file->private_data;
 645         struct saa7164_port *port = fh->port;
 646         struct saa7164_dev *dev = port->dev;
 647
 648         strcpy(cap->driver, dev->name);
 649         strlcpy(cap->card, saa7164_boards[dev->board].name,
 650                 sizeof(cap->card));
 651         sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
 652
 653         cap->capabilities =
 654                 V4L2_CAP_VBI_CAPTURE |
 655                 V4L2_CAP_READWRITE     |
 656                 0;
 657
 658         cap->capabilities |= V4L2_CAP_TUNER;
 659         cap->version = 0;
 660
 661         return 0;
 662 }
 663
 664 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 665         struct v4l2_fmtdesc *f)
 666 {
 667         if (f->index != 0)
 668                 return -EINVAL;
 669
 670         strlcpy(f->description, "VBI", sizeof(f->description));
 671         f->pixelformat = V4L2_PIX_FMT_MPEG;
 672
 673         return 0;
 674 }
 675
 676 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 677                                 struct v4l2_format *f)
 678 {
 679         struct saa7164_vbi_fh *fh = file->private_data;
 680         struct saa7164_port *port = fh->port;
 681         struct saa7164_dev *dev = port->dev;
 682
 683         f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
 684         f->fmt.pix.bytesperline = 0;
 685         f->fmt.pix.sizeimage    =
 686                 port->ts_packet_size * port->ts_packet_count;
 687         f->fmt.pix.colorspace   = 0;
 688         f->fmt.pix.width        = port->width;
 689         f->fmt.pix.height       = port->height;
 690
 691         dprintk(DBGLVL_VBI, "VIDIOC_G_FMT: w: %d, h: %d\n",
 692                 port->width, port->height);
 693
 694         return 0;
 695 }
 696
 697 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 698                                 struct v4l2_format *f)
 699 {
 700         struct saa7164_vbi_fh *fh = file->private_data;
 701         struct saa7164_port *port = fh->port;
 702         struct saa7164_dev *dev = port->dev;
 703
 704         f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
 705         f->fmt.pix.bytesperline = 0;
 706         f->fmt.pix.sizeimage    =
 707                 port->ts_packet_size * port->ts_packet_count;
 708         f->fmt.pix.colorspace   = 0;
 709         dprintk(DBGLVL_VBI, "VIDIOC_TRY_FMT: w: %d, h: %d\n",
 710                 port->width, port->height);
 711         return 0;
 712 }
 713
 714 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 715                                 struct v4l2_format *f)
 716 {
 717         struct saa7164_vbi_fh *fh = file->private_data;
 718         struct saa7164_port *port = fh->port;
 719         struct saa7164_dev *dev = port->dev;
 720
 721         f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
 722         f->fmt.pix.bytesperline = 0;
 723         f->fmt.pix.sizeimage    =
 724                 port->ts_packet_size * port->ts_packet_count;
 725         f->fmt.pix.colorspace   = 0;
 726
 727         dprintk(DBGLVL_VBI, "VIDIOC_S_FMT: w: %d, h: %d, f: %d\n",
 728                 f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
 729
 730         return 0;
 731 }
 732
 733 static int fill_queryctrl(struct saa7164_vbi_params *params,
 734         struct v4l2_queryctrl *c)
 735 {
 736         switch (c->id) {
 737         case V4L2_CID_BRIGHTNESS:
 738                 return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 127);
 739         case V4L2_CID_CONTRAST:
 740                 return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 66);
 741         case V4L2_CID_SATURATION:
 742                 return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 62);
 743         case V4L2_CID_HUE:
 744                 return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 128);
 745         case V4L2_CID_SHARPNESS:
 746                 return v4l2_ctrl_query_fill(c, 0x0, 0x0f, 1, 8);
 747         case V4L2_CID_MPEG_AUDIO_MUTE:
 748                 return v4l2_ctrl_query_fill(c, 0x0, 0x01, 1, 0);
 749         case V4L2_CID_AUDIO_VOLUME:
 750                 return v4l2_ctrl_query_fill(c, -83, 24, 1, 20);
 751         case V4L2_CID_MPEG_STREAM_TYPE:
 752                 return v4l2_ctrl_query_fill(c,
 753                         V4L2_MPEG_STREAM_TYPE_MPEG2_PS,
 754                         V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
 755                         1, V4L2_MPEG_STREAM_TYPE_MPEG2_PS);
 756         case V4L2_CID_MPEG_VIDEO_ASPECT:
 757                 return v4l2_ctrl_query_fill(c,
 758                         V4L2_MPEG_VIDEO_ASPECT_1x1,
 759                         V4L2_MPEG_VIDEO_ASPECT_221x100,
 760                         1, V4L2_MPEG_VIDEO_ASPECT_4x3);
 761         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
 762                 return v4l2_ctrl_query_fill(c, 1, 255, 1, 15);
 763         case V4L2_CID_MPEG_VIDEO_B_FRAMES:
 764                 return v4l2_ctrl_query_fill(c,
 765                         1, 3, 1, 1);
 766         default:
 767                 return -EINVAL;
 768         }
 769 }
 770
 771 static int vidioc_queryctrl(struct file *file, void *priv,
 772         struct v4l2_queryctrl *c)
 773 {
 774         struct saa7164_vbi_fh *fh = priv;
 775         struct saa7164_port *port = fh->port;
 776         int i, next;
 777         u32 id = c->id;
 778
 779         memset(c, 0, sizeof(*c));
 780
 781         next = !!(id & V4L2_CTRL_FLAG_NEXT_CTRL);
 782         c->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL;
 783
 784         for (i = 0; i < ARRAY_SIZE(saa7164_v4l2_ctrls); i++) {
 785                 if (next) {
 786                         if (c->id < saa7164_v4l2_ctrls[i])
 787                                 c->id = saa7164_v4l2_ctrls[i];
 788                         else
 789                                 continue;
 790                 }
 791
 792                 if (c->id == saa7164_v4l2_ctrls[i])
 793                         return fill_queryctrl(&port->vbi_params, c);
 794
 795                 if (c->id < saa7164_v4l2_ctrls[i])
 796                         break;
 797         }
 798
 799         return -EINVAL;
 800 }
 801
 802 static int saa7164_vbi_stop_port(struct saa7164_port *port)
 803 {
 804         struct saa7164_dev *dev = port->dev;
 805         int ret;
 806
 807         ret = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
 808         if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
 809                 printk(KERN_ERR "%s() stop transition failed, ret = 0x%x\n",
 810                         __func__, ret);
 811                 ret = -EIO;
 812         } else {
 813                 dprintk(DBGLVL_VBI, "%s()    Stopped\n", __func__);
 814                 ret = 0;
 815         }
 816
 817         return ret;
 818 }
 819
 820 static int saa7164_vbi_acquire_port(struct saa7164_port *port)
 821 {
 822         struct saa7164_dev *dev = port->dev;
 823         int ret;
 824
 825         ret = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
 826         if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
 827                 printk(KERN_ERR "%s() acquire transition failed, ret = 0x%x\n",
 828                         __func__, ret);
 829                 ret = -EIO;
 830         } else {
 831                 dprintk(DBGLVL_VBI, "%s() Acquired\n", __func__);
 832                 ret = 0;
 833         }
 834
 835         return ret;
 836 }
 837
 838 static int saa7164_vbi_pause_port(struct saa7164_port *port)
 839 {
 840         struct saa7164_dev *dev = port->dev;
 841         int ret;
 842
 843         ret = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
 844         if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
 845                 printk(KERN_ERR "%s() pause transition failed, ret = 0x%x\n",
 846                         __func__, ret);
 847                 ret = -EIO;
 848         } else {
 849                 dprintk(DBGLVL_VBI, "%s()   Paused\n", __func__);
 850                 ret = 0;
 851         }
 852
 853         return ret;
 854 }
 855
 856 /* Firmware is very windows centric, meaning you have to transition
 857  * the part through AVStream / KS Windows stages, forwards or backwards.
 858  * States are: stopped, acquired (h/w), paused, started.
 859  * We have to leave here will all of the soft buffers on the free list,
 860  * else the cfg_post() func won't have soft buffers to correctly configure.
 861  */
 862 static int saa7164_vbi_stop_streaming(struct saa7164_port *port)
 863 {
 864         struct saa7164_dev *dev = port->dev;
 865         struct saa7164_buffer *buf;
 866         struct saa7164_user_buffer *ubuf;
 867         struct list_head *c, *n;
 868         int ret;
 869
 870         dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
 871
 872         ret = saa7164_vbi_pause_port(port);
 873         ret = saa7164_vbi_acquire_port(port);
 874         ret = saa7164_vbi_stop_port(port);
 875
 876         dprintk(DBGLVL_VBI, "%s(port=%d) Hardware stopped\n", __func__,
 877                 port->nr);
 878
 879         /* Reset the state of any allocated buffer resources */
 880         mutex_lock(&port->dmaqueue_lock);
 881
 882         /* Reset the hard and soft buffer state */
 883         list_for_each_safe(c, n, &port->dmaqueue.list) {
 884                 buf = list_entry(c, struct saa7164_buffer, list);
 885                 buf->flags = SAA7164_BUFFER_FREE;
 886                 buf->pos = 0;
 887         }
 888
 889         list_for_each_safe(c, n, &port->list_buf_used.list) {
 890                 ubuf = list_entry(c, struct saa7164_user_buffer, list);
 891                 ubuf->pos = 0;
 892                 list_move_tail(&ubuf->list, &port->list_buf_free.list);
 893         }
 894
 895         mutex_unlock(&port->dmaqueue_lock);
 896
 897         /* Free any allocated resources */
 898         saa7164_vbi_buffers_dealloc(port);
 899
 900         dprintk(DBGLVL_VBI, "%s(port=%d) Released\n", __func__, port->nr);
 901
 902         return ret;
 903 }
 904
 905 static int saa7164_vbi_start_streaming(struct saa7164_port *port)
 906 {
 907         struct saa7164_dev *dev = port->dev;
 908         int result, ret = 0;
 909
 910         dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
 911
 912         port->done_first_interrupt = 0;
 913
 914         /* allocate all of the PCIe DMA buffer resources on the fly,
 915          * allowing switching between TS and PS payloads without
 916          * requiring a complete driver reload.
 917          */
 918         saa7164_vbi_buffers_alloc(port);
 919
 920         /* Configure the encoder with any cache values */
 921 #if 0
 922         saa7164_api_set_encoder(port);
 923         saa7164_api_get_encoder(port);
 924 #endif
 925
 926         /* Place the empty buffers on the hardware */
 927         saa7164_buffer_cfg_port(port);
 928
 929         /* Negotiate format */
 930         if (saa7164_api_set_vbi_format(port) != SAA_OK) {
 931                 printk(KERN_ERR "%s() No supported VBI format\n", __func__);
 932                 ret = -EIO;
 933                 goto out;
 934         }
 935
 936         /* Acquire the hardware */
 937         result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
 938         if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
 939                 printk(KERN_ERR "%s() acquire transition failed, res = 0x%x\n",
 940                         __func__, result);
 941
 942                 ret = -EIO;
 943                 goto out;
 944         } else
 945                 dprintk(DBGLVL_VBI, "%s()   Acquired\n", __func__);
 946
 947         /* Pause the hardware */
 948         result = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
 949         if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
 950                 printk(KERN_ERR "%s() pause transition failed, res = 0x%x\n",
 951                                 __func__, result);
 952
 953                 /* Stop the hardware, regardless */
 954                 result = saa7164_vbi_stop_port(port);
 955                 if (result != SAA_OK) {
 956                         printk(KERN_ERR "%s() pause/forced stop transition "
 957                                 "failed, res = 0x%x\n", __func__, result);
 958                 }
 959
 960                 ret = -EIO;
 961                 goto out;
 962         } else
 963                 dprintk(DBGLVL_VBI, "%s()   Paused\n", __func__);
 964
 965         /* Start the hardware */
 966         result = saa7164_api_transition_port(port, SAA_DMASTATE_RUN);
 967         if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
 968                 printk(KERN_ERR "%s() run transition failed, result = 0x%x\n",
 969                                 __func__, result);
 970
 971                 /* Stop the hardware, regardless */
 972                 result = saa7164_vbi_acquire_port(port);
 973                 result = saa7164_vbi_stop_port(port);
 974                 if (result != SAA_OK) {
 975                         printk(KERN_ERR "%s() run/forced stop transition "
 976                                 "failed, res = 0x%x\n", __func__, result);
 977                 }
 978
 979                 ret = -EIO;
 980         } else
 981                 dprintk(DBGLVL_VBI, "%s()   Running\n", __func__);
 982
 983 out:
 984         return ret;
 985 }
 986
 987 int saa7164_vbi_fmt(struct file *file, void *priv, struct v4l2_format *f)
 988 {
 989         /* ntsc */
 990         f->fmt.vbi.samples_per_line = 1600;
 991         f->fmt.vbi.samples_per_line = 1440;
 992         f->fmt.vbi.sampling_rate = 27000000;
 993         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
 994         f->fmt.vbi.offset = 0;
 995         f->fmt.vbi.flags = 0;
 996         f->fmt.vbi.start[0] = 10;
 997         f->fmt.vbi.count[0] = 18;
 998         f->fmt.vbi.start[1] = 263 + 10 + 1;
 999         f->fmt.vbi.count[1] = 18;
1000         return 0;
1001 }
1002
1003 static int fops_open(struct file *file)
1004 {
1005         struct saa7164_dev *dev;
1006         struct saa7164_port *port;
1007         struct saa7164_vbi_fh *fh;
1008
1009         port = (struct saa7164_port *)video_get_drvdata(video_devdata(file));
1010         if (!port)
1011                 return -ENODEV;
1012
1013         dev = port->dev;
1014
1015         dprintk(DBGLVL_VBI, "%s()\n", __func__);
1016
1017         /* allocate + initialize per filehandle data */
1018         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1019         if (NULL == fh)
1020                 return -ENOMEM;
1021
1022         file->private_data = fh;
1023         fh->port = port;
1024
1025         return 0;
1026 }
1027
1028 static int fops_release(struct file *file)
1029 {
1030         struct saa7164_vbi_fh *fh = file->private_data;
1031         struct saa7164_port *port = fh->port;
1032         struct saa7164_dev *dev = port->dev;
1033
1034         dprintk(DBGLVL_VBI, "%s()\n", __func__);
1035
1036         /* Shut device down on last close */
1037         if (atomic_cmpxchg(&fh->v4l_reading, 1, 0) == 1) {
1038                 if (atomic_dec_return(&port->v4l_reader_count) == 0) {
1039                         /* stop vbi capture then cancel buffers */
1040                         saa7164_vbi_stop_streaming(port);
1041                 }
1042         }
1043
1044         file->private_data = NULL;
1045         kfree(fh);
1046
1047         return 0;
1048 }
1049
1050 struct saa7164_user_buffer *saa7164_vbi_next_buf(struct saa7164_port *port)
1051 {
1052         struct saa7164_user_buffer *ubuf = NULL;
1053         struct saa7164_dev *dev = port->dev;
1054         u32 crc;
1055
1056         mutex_lock(&port->dmaqueue_lock);
1057         if (!list_empty(&port->list_buf_used.list)) {
1058                 ubuf = list_first_entry(&port->list_buf_used.list,
1059                         struct saa7164_user_buffer, list);
1060
1061                 if (crc_checking) {
1062                         crc = crc32(0, ubuf->data, ubuf->actual_size);
1063                         if (crc != ubuf->crc) {
1064                                 printk(KERN_ERR "%s() ubuf %p crc became invalid, was 0x%x became 0x%x\n",
1065                                         __func__,
1066                                         ubuf, ubuf->crc, crc);
1067                         }
1068                 }
1069
1070         }
1071         mutex_unlock(&port->dmaqueue_lock);
1072
1073         dprintk(DBGLVL_VBI, "%s() returns %p\n", __func__, ubuf);
1074
1075         return ubuf;
1076 }
1077
1078 static ssize_t fops_read(struct file *file, char __user *buffer,
1079         size_t count, loff_t *pos)
1080 {
1081         struct saa7164_vbi_fh *fh = file->private_data;
1082         struct saa7164_port *port = fh->port;
1083         struct saa7164_user_buffer *ubuf = NULL;
1084         struct saa7164_dev *dev = port->dev;
1085         int ret = 0;
1086         int rem, cnt;
1087         u8 *p;
1088
1089         port->last_read_msecs_diff = port->last_read_msecs;
1090         port->last_read_msecs = jiffies_to_msecs(jiffies);
1091         port->last_read_msecs_diff = port->last_read_msecs -
1092                 port->last_read_msecs_diff;
1093
1094         saa7164_histogram_update(&port->read_interval,
1095                 port->last_read_msecs_diff);
1096
1097         if (*pos) {
1098                 printk(KERN_ERR "%s() ESPIPE\n", __func__);
1099                 return -ESPIPE;
1100         }
1101
1102         if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
1103                 if (atomic_inc_return(&port->v4l_reader_count) == 1) {
1104
1105                         if (saa7164_vbi_initialize(port) < 0) {
1106                                 printk(KERN_ERR "%s() EINVAL\n", __func__);
1107                                 return -EINVAL;
1108                         }
1109
1110                         saa7164_vbi_start_streaming(port);
1111                         msleep(200);
1112                 }
1113         }
1114
1115         /* blocking wait for buffer */
1116         if ((file->f_flags & O_NONBLOCK) == 0) {
1117                 if (wait_event_interruptible(port->wait_read,
1118                         saa7164_vbi_next_buf(port))) {
1119                                 printk(KERN_ERR "%s() ERESTARTSYS\n", __func__);
1120                                 return -ERESTARTSYS;
1121                 }
1122         }
1123
1124         /* Pull the first buffer from the used list */
1125         ubuf = saa7164_vbi_next_buf(port);
1126
1127         while ((count > 0) && ubuf) {
1128
1129                 /* set remaining bytes to copy */
1130                 rem = ubuf->actual_size - ubuf->pos;
1131                 cnt = rem > count ? count : rem;
1132
1133                 p = ubuf->data + ubuf->pos;
1134
1135                 dprintk(DBGLVL_VBI,
1136                         "%s() count=%d cnt=%d rem=%d buf=%p buf->pos=%d\n",
1137                         __func__, (int)count, cnt, rem, ubuf, ubuf->pos);
1138
1139                 if (copy_to_user(buffer, p, cnt)) {
1140                         printk(KERN_ERR "%s() copy_to_user failed\n", __func__);
1141                         if (!ret) {
1142                                 printk(KERN_ERR "%s() EFAULT\n", __func__);
1143                                 ret = -EFAULT;
1144                         }
1145                         goto err;
1146                 }
1147
1148                 ubuf->pos += cnt;
1149                 count -= cnt;
1150                 buffer += cnt;
1151                 ret += cnt;
1152
1153                 if (ubuf->pos > ubuf->actual_size)
1154                         printk(KERN_ERR "read() pos > actual, huh?\n");
1155
1156                 if (ubuf->pos == ubuf->actual_size) {
1157
1158                         /* finished with current buffer, take next buffer */
1159
1160                         /* Requeue the buffer on the free list */
1161                         ubuf->pos = 0;
1162
1163                         mutex_lock(&port->dmaqueue_lock);
1164                         list_move_tail(&ubuf->list, &port->list_buf_free.list);
1165                         mutex_unlock(&port->dmaqueue_lock);
1166
1167                         /* Dequeue next */
1168                         if ((file->f_flags & O_NONBLOCK) == 0) {
1169                                 if (wait_event_interruptible(port->wait_read,
1170                                         saa7164_vbi_next_buf(port))) {
1171                                                 break;
1172                                 }
1173                         }
1174                         ubuf = saa7164_vbi_next_buf(port);
1175                 }
1176         }
1177 err:
1178         if (!ret && !ubuf) {
1179                 printk(KERN_ERR "%s() EAGAIN\n", __func__);
1180                 ret = -EAGAIN;
1181         }
1182
1183         return ret;
1184 }
1185
1186 static unsigned int fops_poll(struct file *file, poll_table *wait)
1187 {
1188         struct saa7164_vbi_fh *fh = (struct saa7164_vbi_fh *)file->private_data;
1189         struct saa7164_port *port = fh->port;
1190         unsigned int mask = 0;
1191
1192         port->last_poll_msecs_diff = port->last_poll_msecs;
1193         port->last_poll_msecs = jiffies_to_msecs(jiffies);
1194         port->last_poll_msecs_diff = port->last_poll_msecs -
1195                 port->last_poll_msecs_diff;
1196
1197         saa7164_histogram_update(&port->poll_interval,
1198                 port->last_poll_msecs_diff);
1199
1200         if (!video_is_registered(port->v4l_device))
1201                 return -EIO;
1202
1203         if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
1204                 if (atomic_inc_return(&port->v4l_reader_count) == 1) {
1205                         if (saa7164_vbi_initialize(port) < 0)
1206                                 return -EINVAL;
1207                         saa7164_vbi_start_streaming(port);
1208                         msleep(200);
1209                 }
1210         }
1211
1212         /* blocking wait for buffer */
1213         if ((file->f_flags & O_NONBLOCK) == 0) {
1214                 if (wait_event_interruptible(port->wait_read,
1215                         saa7164_vbi_next_buf(port))) {
1216                                 return -ERESTARTSYS;
1217                 }
1218         }
1219
1220         /* Pull the first buffer from the used list */
1221         if (!list_empty(&port->list_buf_used.list))
1222                 mask |= POLLIN | POLLRDNORM;
1223
1224         return mask;
1225 }
1226 static const struct v4l2_file_operations vbi_fops = {
1227         .owner          = THIS_MODULE,
1228         .open           = fops_open,
1229         .release        = fops_release,
1230         .read           = fops_read,
1231         .poll           = fops_poll,
1232         .unlocked_ioctl = video_ioctl2,
1233 };
1234
1235 static const struct v4l2_ioctl_ops vbi_ioctl_ops = {
1236         .vidioc_s_std            = vidioc_s_std,
1237         .vidioc_enum_input       = vidioc_enum_input,
1238         .vidioc_g_input          = vidioc_g_input,
1239         .vidioc_s_input          = vidioc_s_input,
1240         .vidioc_g_tuner          = vidioc_g_tuner,
1241         .vidioc_s_tuner          = vidioc_s_tuner,
1242         .vidioc_g_frequency      = vidioc_g_frequency,
1243         .vidioc_s_frequency      = vidioc_s_frequency,
1244         .vidioc_s_ctrl           = vidioc_s_ctrl,
1245         .vidioc_g_ctrl           = vidioc_g_ctrl,
1246         .vidioc_querycap         = vidioc_querycap,
1247         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1248         .vidioc_g_fmt_vid_cap    = vidioc_g_fmt_vid_cap,
1249         .vidioc_try_fmt_vid_cap  = vidioc_try_fmt_vid_cap,
1250         .vidioc_s_fmt_vid_cap    = vidioc_s_fmt_vid_cap,
1251         .vidioc_g_ext_ctrls      = vidioc_g_ext_ctrls,
1252         .vidioc_s_ext_ctrls      = vidioc_s_ext_ctrls,
1253         .vidioc_try_ext_ctrls    = vidioc_try_ext_ctrls,
1254         .vidioc_queryctrl        = vidioc_queryctrl,
1255 #if 0
1256         .vidioc_g_chip_ident     = saa7164_g_chip_ident,
1257 #endif
1258 #ifdef CONFIG_VIDEO_ADV_DEBUG
1259 #if 0
1260         .vidioc_g_register       = saa7164_g_register,
1261         .vidioc_s_register       = saa7164_s_register,
1262 #endif
1263 #endif
1264         .vidioc_g_fmt_vbi_cap    = saa7164_vbi_fmt,
1265         .vidioc_try_fmt_vbi_cap  = saa7164_vbi_fmt,
1266         .vidioc_s_fmt_vbi_cap    = saa7164_vbi_fmt,
1267 };
1268
1269 static struct video_device saa7164_vbi_template = {
1270         .name          = "saa7164",
1271         .fops          = &vbi_fops,
1272         .ioctl_ops     = &vbi_ioctl_ops,
1273         .minor         = -1,
1274         .tvnorms       = SAA7164_NORMS,
1275         .current_norm  = V4L2_STD_NTSC_M,
1276 };
1277
1278 static struct video_device *saa7164_vbi_alloc(
1279         struct saa7164_port *port,
1280         struct pci_dev *pci,
1281         struct video_device *template,
1282         char *type)
1283 {
1284         struct video_device *vfd;
1285         struct saa7164_dev *dev = port->dev;
1286
1287         dprintk(DBGLVL_VBI, "%s()\n", __func__);
1288
1289         vfd = video_device_alloc();
1290         if (NULL == vfd)
1291                 return NULL;
1292
1293         *vfd = *template;
1294         snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name,
1295                 type, saa7164_boards[dev->board].name);
1296
1297         vfd->parent  = &pci->dev;
1298         vfd->release = video_device_release;
1299         return vfd;
1300 }
1301
1302 int saa7164_vbi_register(struct saa7164_port *port)
1303 {
1304         struct saa7164_dev *dev = port->dev;
1305         int result = -ENODEV;
1306
1307         dprintk(DBGLVL_VBI, "%s()\n", __func__);
1308
1309         if (port->type != SAA7164_MPEG_VBI)
1310                 BUG();
1311
1312         /* Sanity check that the PCI configuration space is active */
1313         if (port->hwcfg.BARLocation == 0) {
1314                 printk(KERN_ERR "%s() failed "
1315                        "(errno = %d), NO PCI configuration\n",
1316                         __func__, result);
1317                 result = -ENOMEM;
1318                 goto failed;
1319         }
1320
1321         /* Establish VBI defaults here */
1322
1323         /* Allocate and register the video device node */
1324         port->v4l_device = saa7164_vbi_alloc(port,
1325                 dev->pci, &saa7164_vbi_template, "vbi");
1326
1327         if (!port->v4l_device) {
1328                 printk(KERN_INFO "%s: can't allocate vbi device\n",
1329                         dev->name);
1330                 result = -ENOMEM;
1331                 goto failed;
1332         }
1333
1334         video_set_drvdata(port->v4l_device, port);
1335         result = video_register_device(port->v4l_device,
1336                 VFL_TYPE_VBI, -1);
1337         if (result < 0) {
1338                 printk(KERN_INFO "%s: can't register vbi device\n",
1339                         dev->name);
1340                 /* TODO: We're going to leak here if we don't dealloc
1341                  The buffers above. The unreg function can't deal wit it.
1342                 */
1343                 goto failed;
1344         }
1345
1346         printk(KERN_INFO "%s: registered device vbi%d [vbi]\n",
1347                 dev->name, port->v4l_device->num);
1348
1349         /* Configure the hardware defaults */
1350
1351         result = 0;
1352 failed:
1353         return result;
1354 }
1355
1356 void saa7164_vbi_unregister(struct saa7164_port *port)
1357 {
1358         struct saa7164_dev *dev = port->dev;
1359
1360         dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
1361
1362         if (port->type != SAA7164_MPEG_VBI)
1363                 BUG();
1364
1365         if (port->v4l_device) {
1366                 if (port->v4l_device->minor != -1)
1367                         video_unregister_device(port->v4l_device);
1368                 else
1369                         video_device_release(port->v4l_device);
1370
1371                 port->v4l_device = NULL;
1372         }
1373
1374 }