drivers/media/video/pvrusb2/pvrusb2-v4l2.c

   1 /*
   2  *
   3  *  $Id$
   4  *
   5  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   6  *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  */
  22
  23 #include <linux/kernel.h>
  24 #include <linux/version.h>
  25 #include "pvrusb2-context.h"
  26 #include "pvrusb2-hdw.h"
  27 #include "pvrusb2.h"
  28 #include "pvrusb2-debug.h"
  29 #include "pvrusb2-v4l2.h"
  30 #include "pvrusb2-ioread.h"
  31 #include <linux/videodev2.h>
  32 #include <media/v4l2-dev.h>
  33 #include <media/v4l2-common.h>
  34
  35 struct pvr2_v4l2_dev;
  36 struct pvr2_v4l2_fh;
  37 struct pvr2_v4l2;
  38
  39 struct pvr2_v4l2_dev {
  40         struct video_device devbase; /* MUST be first! */
  41         struct pvr2_v4l2 *v4lp;
  42         struct pvr2_context_stream *stream;
  43         /* Information about this device: */
  44         enum pvr2_config config; /* Expected stream format */
  45         int v4l_type; /* V4L defined type for this device node */
  46         enum pvr2_v4l_type minor_type; /* pvr2-understood minor device type */
  47 };
  48
  49 struct pvr2_v4l2_fh {
  50         struct pvr2_channel channel;
  51         struct pvr2_v4l2_dev *dev_info;
  52         enum v4l2_priority prio;
  53         struct pvr2_ioread *rhp;
  54         struct file *file;
  55         struct pvr2_v4l2 *vhead;
  56         struct pvr2_v4l2_fh *vnext;
  57         struct pvr2_v4l2_fh *vprev;
  58         wait_queue_head_t wait_data;
  59         int fw_mode_flag;
  60         int prev_input_val;
  61 };
  62
  63 struct pvr2_v4l2 {
  64         struct pvr2_channel channel;
  65         struct pvr2_v4l2_fh *vfirst;
  66         struct pvr2_v4l2_fh *vlast;
  67
  68         struct v4l2_prio_state prio;
  69
  70         /* streams - Note that these must be separately, individually,
  71          * allocated pointers.  This is because the v4l core is going to
  72          * manage their deletion - separately, individually...  */
  73         struct pvr2_v4l2_dev *dev_video;
  74         struct pvr2_v4l2_dev *dev_radio;
  75 };
  76
  77 static int video_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
  78 module_param_array(video_nr, int, NULL, 0444);
  79 MODULE_PARM_DESC(video_nr, "Offset for device's video dev minor");
  80 static int radio_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
  81 module_param_array(radio_nr, int, NULL, 0444);
  82 MODULE_PARM_DESC(radio_nr, "Offset for device's radio dev minor");
  83 static int vbi_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
  84 module_param_array(vbi_nr, int, NULL, 0444);
  85 MODULE_PARM_DESC(vbi_nr, "Offset for device's vbi dev minor");
  86
  87 static struct v4l2_capability pvr_capability ={
  88         .driver         = "pvrusb2",
  89         .card           = "Hauppauge WinTV pvr-usb2",
  90         .bus_info       = "usb",
  91         .version        = KERNEL_VERSION(0,8,0),
  92         .capabilities   = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE |
  93                            V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_RADIO |
  94                            V4L2_CAP_READWRITE),
  95         .reserved       = {0,0,0,0}
  96 };
  97
  98 static struct v4l2_fmtdesc pvr_fmtdesc [] = {
  99         {
 100                 .index          = 0,
 101                 .type           = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 102                 .flags          = V4L2_FMT_FLAG_COMPRESSED,
 103                 .description    = "MPEG1/2",
 104                 // This should really be V4L2_PIX_FMT_MPEG, but xawtv
 105                 // breaks when I do that.
 106                 .pixelformat    = 0, // V4L2_PIX_FMT_MPEG,
 107                 .reserved       = { 0, 0, 0, 0 }
 108         }
 109 };
 110
 111 #define PVR_FORMAT_PIX  0
 112 #define PVR_FORMAT_VBI  1
 113
 114 static struct v4l2_format pvr_format [] = {
 115         [PVR_FORMAT_PIX] = {
 116                 .type   = V4L2_BUF_TYPE_VIDEO_CAPTURE,
 117                 .fmt    = {
 118                         .pix        = {
 119                                 .width          = 720,
 120                                 .height             = 576,
 121                                 // This should really be V4L2_PIX_FMT_MPEG,
 122                                 // but xawtv breaks when I do that.
 123                                 .pixelformat    = 0, // V4L2_PIX_FMT_MPEG,
 124                                 .field          = V4L2_FIELD_INTERLACED,
 125                                 .bytesperline   = 0,  // doesn't make sense
 126                                                       // here
 127                                 //FIXME : Don't know what to put here...
 128                                 .sizeimage          = (32*1024),
 129                                 .colorspace     = 0, // doesn't make sense here
 130                                 .priv           = 0
 131                         }
 132                 }
 133         },
 134         [PVR_FORMAT_VBI] = {
 135                 .type   = V4L2_BUF_TYPE_VBI_CAPTURE,
 136                 .fmt    = {
 137                         .vbi        = {
 138                                 .sampling_rate = 27000000,
 139                                 .offset = 248,
 140                                 .samples_per_line = 1443,
 141                                 .sample_format = V4L2_PIX_FMT_GREY,
 142                                 .start = { 0, 0 },
 143                                 .count = { 0, 0 },
 144                                 .flags = 0,
 145                                 .reserved = { 0, 0 }
 146                         }
 147                 }
 148         }
 149 };
 150
 151
 152 static const char *get_v4l_name(int v4l_type)
 153 {
 154         switch (v4l_type) {
 155         case VFL_TYPE_GRABBER: return "video";
 156         case VFL_TYPE_RADIO: return "radio";
 157         case VFL_TYPE_VBI: return "vbi";
 158         default: return "?";
 159         }
 160 }
 161
 162
 163 /*
 164  * pvr_ioctl()
 165  *
 166  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 167  *
 168  */
 169 static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
 170                               unsigned int cmd, void *arg)
 171 {
 172         struct pvr2_v4l2_fh *fh = file->private_data;
 173         struct pvr2_v4l2 *vp = fh->vhead;
 174         struct pvr2_v4l2_dev *dev_info = fh->dev_info;
 175         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 176         int ret = -EINVAL;
 177
 178         if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) {
 179                 v4l_print_ioctl(pvr2_hdw_get_driver_name(hdw),cmd);
 180         }
 181
 182         if (!pvr2_hdw_dev_ok(hdw)) {
 183                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 184                            "ioctl failed - bad or no context");
 185                 return -EFAULT;
 186         }
 187
 188         /* check priority */
 189         switch (cmd) {
 190         case VIDIOC_S_CTRL:
 191         case VIDIOC_S_STD:
 192         case VIDIOC_S_INPUT:
 193         case VIDIOC_S_TUNER:
 194         case VIDIOC_S_FREQUENCY:
 195                 ret = v4l2_prio_check(&vp->prio, &fh->prio);
 196                 if (ret)
 197                         return ret;
 198         }
 199
 200         switch (cmd) {
 201         case VIDIOC_QUERYCAP:
 202         {
 203                 struct v4l2_capability *cap = arg;
 204
 205                 memcpy(cap, &pvr_capability, sizeof(struct v4l2_capability));
 206
 207                 ret = 0;
 208                 break;
 209         }
 210
 211         case VIDIOC_G_PRIORITY:
 212         {
 213                 enum v4l2_priority *p = arg;
 214
 215                 *p = v4l2_prio_max(&vp->prio);
 216                 ret = 0;
 217                 break;
 218         }
 219
 220         case VIDIOC_S_PRIORITY:
 221         {
 222                 enum v4l2_priority *prio = arg;
 223
 224                 ret = v4l2_prio_change(&vp->prio, &fh->prio, *prio);
 225                 break;
 226         }
 227
 228         case VIDIOC_ENUMSTD:
 229         {
 230                 struct v4l2_standard *vs = (struct v4l2_standard *)arg;
 231                 int idx = vs->index;
 232                 ret = pvr2_hdw_get_stdenum_value(hdw,vs,idx+1);
 233                 break;
 234         }
 235
 236         case VIDIOC_G_STD:
 237         {
 238                 int val = 0;
 239                 ret = pvr2_ctrl_get_value(
 240                         pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR),&val);
 241                 *(v4l2_std_id *)arg = val;
 242                 break;
 243         }
 244
 245         case VIDIOC_S_STD:
 246         {
 247                 ret = pvr2_ctrl_set_value(
 248                         pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDCUR),
 249                         *(v4l2_std_id *)arg);
 250                 break;
 251         }
 252
 253         case VIDIOC_ENUMINPUT:
 254         {
 255                 struct pvr2_ctrl *cptr;
 256                 struct v4l2_input *vi = (struct v4l2_input *)arg;
 257                 struct v4l2_input tmp;
 258                 unsigned int cnt;
 259
 260                 cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
 261
 262                 memset(&tmp,0,sizeof(tmp));
 263                 tmp.index = vi->index;
 264                 ret = 0;
 265                 switch (vi->index) {
 266                 case PVR2_CVAL_INPUT_TV:
 267                 case PVR2_CVAL_INPUT_RADIO:
 268                         tmp.type = V4L2_INPUT_TYPE_TUNER;
 269                         break;
 270                 case PVR2_CVAL_INPUT_SVIDEO:
 271                 case PVR2_CVAL_INPUT_COMPOSITE:
 272                         tmp.type = V4L2_INPUT_TYPE_CAMERA;
 273                         break;
 274                 default:
 275                         ret = -EINVAL;
 276                         break;
 277                 }
 278                 if (ret < 0) break;
 279
 280                 cnt = 0;
 281                 pvr2_ctrl_get_valname(cptr,vi->index,
 282                                       tmp.name,sizeof(tmp.name)-1,&cnt);
 283                 tmp.name[cnt] = 0;
 284
 285                 /* Don't bother with audioset, since this driver currently
 286                    always switches the audio whenever the video is
 287                    switched. */
 288
 289                 /* Handling std is a tougher problem.  It doesn't make
 290                    sense in cases where a device might be multi-standard.
 291                    We could just copy out the current value for the
 292                    standard, but it can change over time.  For now just
 293                    leave it zero. */
 294
 295                 memcpy(vi, &tmp, sizeof(tmp));
 296
 297                 ret = 0;
 298                 break;
 299         }
 300
 301         case VIDIOC_G_INPUT:
 302         {
 303                 struct pvr2_ctrl *cptr;
 304                 struct v4l2_input *vi = (struct v4l2_input *)arg;
 305                 int val;
 306                 cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
 307                 val = 0;
 308                 ret = pvr2_ctrl_get_value(cptr,&val);
 309                 vi->index = val;
 310                 break;
 311         }
 312
 313         case VIDIOC_S_INPUT:
 314         {
 315                 struct v4l2_input *vi = (struct v4l2_input *)arg;
 316                 ret = pvr2_ctrl_set_value(
 317                         pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT),
 318                         vi->index);
 319                 break;
 320         }
 321
 322         case VIDIOC_ENUMAUDIO:
 323         {
 324                 ret = -EINVAL;
 325                 break;
 326         }
 327
 328         case VIDIOC_G_AUDIO:
 329         {
 330                 ret = -EINVAL;
 331                 break;
 332         }
 333
 334         case VIDIOC_S_AUDIO:
 335         {
 336                 ret = -EINVAL;
 337                 break;
 338         }
 339         case VIDIOC_G_TUNER:
 340         {
 341                 struct v4l2_tuner *vt = (struct v4l2_tuner *)arg;
 342                 pvr2_hdw_execute_tuner_poll(hdw);
 343                 ret = pvr2_hdw_get_tuner_status(hdw,vt);
 344                 break;
 345         }
 346
 347         case VIDIOC_S_TUNER:
 348         {
 349                 struct v4l2_tuner *vt=(struct v4l2_tuner *)arg;
 350
 351                 if (vt->index != 0)
 352                         break;
 353
 354                 ret = pvr2_ctrl_set_value(
 355                         pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_AUDIOMODE),
 356                         vt->audmode);
 357         }
 358
 359         case VIDIOC_S_FREQUENCY:
 360         {
 361                 const struct v4l2_frequency *vf = (struct v4l2_frequency *)arg;
 362                 unsigned long fv;
 363                 struct v4l2_tuner vt;
 364                 int cur_input;
 365                 struct pvr2_ctrl *ctrlp;
 366                 ret = pvr2_hdw_get_tuner_status(hdw,&vt);
 367                 if (ret != 0) break;
 368                 ctrlp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
 369                 ret = pvr2_ctrl_get_value(ctrlp,&cur_input);
 370                 if (ret != 0) break;
 371                 if (vf->type == V4L2_TUNER_RADIO) {
 372                         if (cur_input != PVR2_CVAL_INPUT_RADIO) {
 373                                 pvr2_ctrl_set_value(ctrlp,
 374                                                     PVR2_CVAL_INPUT_RADIO);
 375                         }
 376                 } else {
 377                         if (cur_input == PVR2_CVAL_INPUT_RADIO) {
 378                                 pvr2_ctrl_set_value(ctrlp,
 379                                                     PVR2_CVAL_INPUT_TV);
 380                         }
 381                 }
 382                 fv = vf->frequency;
 383                 if (vt.capability & V4L2_TUNER_CAP_LOW) {
 384                         fv = (fv * 125) / 2;
 385                 } else {
 386                         fv = fv * 62500;
 387                 }
 388                 ret = pvr2_ctrl_set_value(
 389                         pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),fv);
 390                 break;
 391         }
 392
 393         case VIDIOC_G_FREQUENCY:
 394         {
 395                 struct v4l2_frequency *vf = (struct v4l2_frequency *)arg;
 396                 int val = 0;
 397                 int cur_input;
 398                 struct v4l2_tuner vt;
 399                 ret = pvr2_hdw_get_tuner_status(hdw,&vt);
 400                 if (ret != 0) break;
 401                 ret = pvr2_ctrl_get_value(
 402                         pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),
 403                         &val);
 404                 if (ret != 0) break;
 405                 pvr2_ctrl_get_value(
 406                         pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT),
 407                         &cur_input);
 408                 if (cur_input == PVR2_CVAL_INPUT_RADIO) {
 409                         vf->type = V4L2_TUNER_RADIO;
 410                 } else {
 411                         vf->type = V4L2_TUNER_ANALOG_TV;
 412                 }
 413                 if (vt.capability & V4L2_TUNER_CAP_LOW) {
 414                         val = (val * 2) / 125;
 415                 } else {
 416                         val /= 62500;
 417                 }
 418                 vf->frequency = val;
 419                 break;
 420         }
 421
 422         case VIDIOC_ENUM_FMT:
 423         {
 424                 struct v4l2_fmtdesc *fd = (struct v4l2_fmtdesc *)arg;
 425
 426                 /* Only one format is supported : mpeg.*/
 427                 if (fd->index != 0)
 428                         break;
 429
 430                 memcpy(fd, pvr_fmtdesc, sizeof(struct v4l2_fmtdesc));
 431                 ret = 0;
 432                 break;
 433         }
 434
 435         case VIDIOC_G_FMT:
 436         {
 437                 struct v4l2_format *vf = (struct v4l2_format *)arg;
 438                 int val;
 439                 switch(vf->type) {
 440                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 441                         memcpy(vf, &pvr_format[PVR_FORMAT_PIX],
 442                                sizeof(struct v4l2_format));
 443                         val = 0;
 444                         pvr2_ctrl_get_value(
 445                                 pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES),
 446                                 &val);
 447                         vf->fmt.pix.width = val;
 448                         val = 0;
 449                         pvr2_ctrl_get_value(
 450                                 pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES),
 451                                 &val);
 452                         vf->fmt.pix.height = val;
 453                         ret = 0;
 454                         break;
 455                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 456                         // ????? Still need to figure out to do VBI correctly
 457                         ret = -EINVAL;
 458                         break;
 459                 default:
 460                         ret = -EINVAL;
 461                         break;
 462                 }
 463                 break;
 464         }
 465
 466         case VIDIOC_TRY_FMT:
 467         case VIDIOC_S_FMT:
 468         {
 469                 struct v4l2_format *vf = (struct v4l2_format *)arg;
 470
 471                 ret = 0;
 472                 switch(vf->type) {
 473                 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
 474                         int lmin,lmax;
 475                         struct pvr2_ctrl *hcp,*vcp;
 476                         int h = vf->fmt.pix.height;
 477                         int w = vf->fmt.pix.width;
 478                         hcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_HRES);
 479                         vcp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_VRES);
 480
 481                         lmin = pvr2_ctrl_get_min(hcp);
 482                         lmax = pvr2_ctrl_get_max(hcp);
 483                         if (w < lmin) {
 484                                 w = lmin;
 485                         } else if (w > lmax) {
 486                                 w = lmax;
 487                         }
 488                         lmin = pvr2_ctrl_get_min(vcp);
 489                         lmax = pvr2_ctrl_get_max(vcp);
 490                         if (h < lmin) {
 491                                 h = lmin;
 492                         } else if (h > lmax) {
 493                                 h = lmax;
 494                         }
 495
 496                         memcpy(vf, &pvr_format[PVR_FORMAT_PIX],
 497                                sizeof(struct v4l2_format));
 498                         vf->fmt.pix.width = w;
 499                         vf->fmt.pix.height = h;
 500
 501                         if (cmd == VIDIOC_S_FMT) {
 502                                 pvr2_ctrl_set_value(hcp,vf->fmt.pix.width);
 503                                 pvr2_ctrl_set_value(vcp,vf->fmt.pix.height);
 504                         }
 505                 } break;
 506                 case V4L2_BUF_TYPE_VBI_CAPTURE:
 507                         // ????? Still need to figure out to do VBI correctly
 508                         ret = -EINVAL;
 509                         break;
 510                 default:
 511                         ret = -EINVAL;
 512                         break;
 513                 }
 514                 break;
 515         }
 516
 517         case VIDIOC_STREAMON:
 518         {
 519                 if (!fh->dev_info->stream) {
 520                         /* No stream defined for this node.  This means
 521                            that we're not currently allowed to stream from
 522                            this node. */
 523                         ret = -EPERM;
 524                         break;
 525                 }
 526                 ret = pvr2_hdw_set_stream_type(hdw,dev_info->config);
 527                 if (ret < 0) return ret;
 528                 ret = pvr2_hdw_set_streaming(hdw,!0);
 529                 break;
 530         }
 531
 532         case VIDIOC_STREAMOFF:
 533         {
 534                 if (!fh->dev_info->stream) {
 535                         /* No stream defined for this node.  This means
 536                            that we're not currently allowed to stream from
 537                            this node. */
 538                         ret = -EPERM;
 539                         break;
 540                 }
 541                 ret = pvr2_hdw_set_streaming(hdw,0);
 542                 break;
 543         }
 544
 545         case VIDIOC_QUERYCTRL:
 546         {
 547                 struct pvr2_ctrl *cptr;
 548                 struct v4l2_queryctrl *vc = (struct v4l2_queryctrl *)arg;
 549                 ret = 0;
 550                 if (vc->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
 551                         cptr = pvr2_hdw_get_ctrl_nextv4l(
 552                                 hdw,(vc->id & ~V4L2_CTRL_FLAG_NEXT_CTRL));
 553                         if (cptr) vc->id = pvr2_ctrl_get_v4lid(cptr);
 554                 } else {
 555                         cptr = pvr2_hdw_get_ctrl_v4l(hdw,vc->id);
 556                 }
 557                 if (!cptr) {
 558                         pvr2_trace(PVR2_TRACE_V4LIOCTL,
 559                                    "QUERYCTRL id=0x%x not implemented here",
 560                                    vc->id);
 561                         ret = -EINVAL;
 562                         break;
 563                 }
 564
 565                 pvr2_trace(PVR2_TRACE_V4LIOCTL,
 566                            "QUERYCTRL id=0x%x mapping name=%s (%s)",
 567                            vc->id,pvr2_ctrl_get_name(cptr),
 568                            pvr2_ctrl_get_desc(cptr));
 569                 strlcpy(vc->name,pvr2_ctrl_get_desc(cptr),sizeof(vc->name));
 570                 vc->flags = pvr2_ctrl_get_v4lflags(cptr);
 571                 vc->default_value = pvr2_ctrl_get_def(cptr);
 572                 switch (pvr2_ctrl_get_type(cptr)) {
 573                 case pvr2_ctl_enum:
 574                         vc->type = V4L2_CTRL_TYPE_MENU;
 575                         vc->minimum = 0;
 576                         vc->maximum = pvr2_ctrl_get_cnt(cptr) - 1;
 577                         vc->step = 1;
 578                         break;
 579                 case pvr2_ctl_bool:
 580                         vc->type = V4L2_CTRL_TYPE_BOOLEAN;
 581                         vc->minimum = 0;
 582                         vc->maximum = 1;
 583                         vc->step = 1;
 584                         break;
 585                 case pvr2_ctl_int:
 586                         vc->type = V4L2_CTRL_TYPE_INTEGER;
 587                         vc->minimum = pvr2_ctrl_get_min(cptr);
 588                         vc->maximum = pvr2_ctrl_get_max(cptr);
 589                         vc->step = 1;
 590                         break;
 591                 default:
 592                         pvr2_trace(PVR2_TRACE_V4LIOCTL,
 593                                    "QUERYCTRL id=0x%x name=%s not mappable",
 594                                    vc->id,pvr2_ctrl_get_name(cptr));
 595                         ret = -EINVAL;
 596                         break;
 597                 }
 598                 break;
 599         }
 600
 601         case VIDIOC_QUERYMENU:
 602         {
 603                 struct v4l2_querymenu *vm = (struct v4l2_querymenu *)arg;
 604                 unsigned int cnt = 0;
 605                 ret = pvr2_ctrl_get_valname(pvr2_hdw_get_ctrl_v4l(hdw,vm->id),
 606                                             vm->index,
 607                                             vm->name,sizeof(vm->name)-1,
 608                                             &cnt);
 609                 vm->name[cnt] = 0;
 610                 break;
 611         }
 612
 613         case VIDIOC_G_CTRL:
 614         {
 615                 struct v4l2_control *vc = (struct v4l2_control *)arg;
 616                 int val = 0;
 617                 ret = pvr2_ctrl_get_value(pvr2_hdw_get_ctrl_v4l(hdw,vc->id),
 618                                           &val);
 619                 vc->value = val;
 620                 break;
 621         }
 622
 623         case VIDIOC_S_CTRL:
 624         {
 625                 struct v4l2_control *vc = (struct v4l2_control *)arg;
 626                 ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_v4l(hdw,vc->id),
 627                                           vc->value);
 628                 break;
 629         }
 630
 631         case VIDIOC_G_EXT_CTRLS:
 632         {
 633                 struct v4l2_ext_controls *ctls =
 634                         (struct v4l2_ext_controls *)arg;
 635                 struct v4l2_ext_control *ctrl;
 636                 unsigned int idx;
 637                 int val;
 638                 for (idx = 0; idx < ctls->count; idx++) {
 639                         ctrl = ctls->controls + idx;
 640                         ret = pvr2_ctrl_get_value(
 641                                 pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id),&val);
 642                         if (ret) {
 643                                 ctls->error_idx = idx;
 644                                 break;
 645                         }
 646                         /* Ensure that if read as a 64 bit value, the user
 647                            will still get a hopefully sane value */
 648                         ctrl->value64 = 0;
 649                         ctrl->value = val;
 650                 }
 651                 break;
 652         }
 653
 654         case VIDIOC_S_EXT_CTRLS:
 655         {
 656                 struct v4l2_ext_controls *ctls =
 657                         (struct v4l2_ext_controls *)arg;
 658                 struct v4l2_ext_control *ctrl;
 659                 unsigned int idx;
 660                 for (idx = 0; idx < ctls->count; idx++) {
 661                         ctrl = ctls->controls + idx;
 662                         ret = pvr2_ctrl_set_value(
 663                                 pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id),
 664                                 ctrl->value);
 665                         if (ret) {
 666                                 ctls->error_idx = idx;
 667                                 break;
 668                         }
 669                 }
 670                 break;
 671         }
 672
 673         case VIDIOC_TRY_EXT_CTRLS:
 674         {
 675                 struct v4l2_ext_controls *ctls =
 676                         (struct v4l2_ext_controls *)arg;
 677                 struct v4l2_ext_control *ctrl;
 678                 struct pvr2_ctrl *pctl;
 679                 unsigned int idx;
 680                 /* For the moment just validate that the requested control
 681                    actually exists. */
 682                 for (idx = 0; idx < ctls->count; idx++) {
 683                         ctrl = ctls->controls + idx;
 684                         pctl = pvr2_hdw_get_ctrl_v4l(hdw,ctrl->id);
 685                         if (!pctl) {
 686                                 ret = -EINVAL;
 687                                 ctls->error_idx = idx;
 688                                 break;
 689                         }
 690                 }
 691                 break;
 692         }
 693
 694         case VIDIOC_LOG_STATUS:
 695         {
 696                 pvr2_hdw_trigger_module_log(hdw);
 697                 ret = 0;
 698                 break;
 699         }
 700 #ifdef CONFIG_VIDEO_ADV_DEBUG
 701         case VIDIOC_INT_G_REGISTER:
 702         case VIDIOC_INT_S_REGISTER:
 703         {
 704                 u32 val;
 705                 struct v4l2_register *req = (struct v4l2_register *)arg;
 706                 if (cmd == VIDIOC_INT_S_REGISTER) val = req->val;
 707                 ret = pvr2_hdw_register_access(
 708                         hdw,req->i2c_id,req->reg,
 709                         cmd == VIDIOC_INT_S_REGISTER,&val);
 710                 if (cmd == VIDIOC_INT_G_REGISTER) req->val = val;
 711                 break;
 712         }
 713 #endif
 714
 715         default :
 716                 ret = v4l_compat_translate_ioctl(inode,file,cmd,
 717                                                  arg,pvr2_v4l2_do_ioctl);
 718         }
 719
 720         pvr2_hdw_commit_ctl(hdw);
 721
 722         if (ret < 0) {
 723                 if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) {
 724                         pvr2_trace(PVR2_TRACE_V4LIOCTL,
 725                                    "pvr2_v4l2_do_ioctl failure, ret=%d",ret);
 726                 } else {
 727                         if (pvrusb2_debug & PVR2_TRACE_V4LIOCTL) {
 728                                 pvr2_trace(PVR2_TRACE_V4LIOCTL,
 729                                            "pvr2_v4l2_do_ioctl failure, ret=%d"
 730                                            " command was:",ret);
 731                                 v4l_print_ioctl(pvr2_hdw_get_driver_name(hdw),
 732                                                 cmd);
 733                         }
 734                 }
 735         } else {
 736                 pvr2_trace(PVR2_TRACE_V4LIOCTL,
 737                            "pvr2_v4l2_do_ioctl complete, ret=%d (0x%x)",
 738                            ret,ret);
 739         }
 740         return ret;
 741 }
 742
 743
 744 static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip)
 745 {
 746         int minor_id = dip->devbase.minor;
 747         struct pvr2_hdw *hdw = dip->v4lp->channel.mc_head->hdw;
 748         enum pvr2_config cfg = dip->config;
 749         int v4l_type = dip->v4l_type;
 750
 751         pvr2_hdw_v4l_store_minor_number(hdw,dip->minor_type,-1);
 752
 753         /* Paranoia */
 754         dip->v4lp = NULL;
 755         dip->stream = NULL;
 756
 757         /* Actual deallocation happens later when all internal references
 758            are gone. */
 759         video_unregister_device(&dip->devbase);
 760
 761         printk(KERN_INFO "pvrusb2: unregistered device %s%u [%s]\n",
 762                get_v4l_name(v4l_type),minor_id & 0x1f,
 763                pvr2_config_get_name(cfg));
 764
 765 }
 766
 767
 768 static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp)
 769 {
 770         if (vp->dev_video) {
 771                 pvr2_v4l2_dev_destroy(vp->dev_video);
 772                 vp->dev_video = 0;
 773         }
 774         if (vp->dev_radio) {
 775                 pvr2_v4l2_dev_destroy(vp->dev_radio);
 776                 vp->dev_radio = 0;
 777         }
 778
 779         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp);
 780         pvr2_channel_done(&vp->channel);
 781         kfree(vp);
 782 }
 783
 784
 785 static void pvr2_video_device_release(struct video_device *vdev)
 786 {
 787         struct pvr2_v4l2_dev *dev;
 788         dev = container_of(vdev,struct pvr2_v4l2_dev,devbase);
 789         kfree(dev);
 790 }
 791
 792
 793 static void pvr2_v4l2_internal_check(struct pvr2_channel *chp)
 794 {
 795         struct pvr2_v4l2 *vp;
 796         vp = container_of(chp,struct pvr2_v4l2,channel);
 797         if (!vp->channel.mc_head->disconnect_flag) return;
 798         if (vp->vfirst) return;
 799         pvr2_v4l2_destroy_no_lock(vp);
 800 }
 801
 802
 803 static int pvr2_v4l2_ioctl(struct inode *inode, struct file *file,
 804                            unsigned int cmd, unsigned long arg)
 805 {
 806
 807 /* Temporary hack : use ivtv api until a v4l2 one is available. */
 808 #define IVTV_IOC_G_CODEC        0xFFEE7703
 809 #define IVTV_IOC_S_CODEC        0xFFEE7704
 810         if (cmd == IVTV_IOC_G_CODEC || cmd == IVTV_IOC_S_CODEC) return 0;
 811         return video_usercopy(inode, file, cmd, arg, pvr2_v4l2_do_ioctl);
 812 }
 813
 814
 815 static int pvr2_v4l2_release(struct inode *inode, struct file *file)
 816 {
 817         struct pvr2_v4l2_fh *fhp = file->private_data;
 818         struct pvr2_v4l2 *vp = fhp->vhead;
 819         struct pvr2_context *mp = fhp->vhead->channel.mc_head;
 820         struct pvr2_hdw *hdw = fhp->channel.mc_head->hdw;
 821
 822         pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release");
 823
 824         if (fhp->rhp) {
 825                 struct pvr2_stream *sp;
 826                 pvr2_hdw_set_streaming(hdw,0);
 827                 sp = pvr2_ioread_get_stream(fhp->rhp);
 828                 if (sp) pvr2_stream_set_callback(sp,NULL,NULL);
 829                 pvr2_ioread_destroy(fhp->rhp);
 830                 fhp->rhp = NULL;
 831         }
 832
 833         v4l2_prio_close(&vp->prio, &fhp->prio);
 834         file->private_data = NULL;
 835
 836         pvr2_context_enter(mp); do {
 837                 /* Restore the previous input selection, if it makes sense
 838                    to do so. */
 839                 if (fhp->dev_info->v4l_type == VFL_TYPE_RADIO) {
 840                         struct pvr2_ctrl *cp;
 841                         int pval;
 842                         cp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
 843                         pvr2_ctrl_get_value(cp,&pval);
 844                         /* Only restore if we're still selecting the radio */
 845                         if (pval == PVR2_CVAL_INPUT_RADIO) {
 846                                 pvr2_ctrl_set_value(cp,fhp->prev_input_val);
 847                                 pvr2_hdw_commit_ctl(hdw);
 848                         }
 849                 }
 850
 851                 if (fhp->vnext) {
 852                         fhp->vnext->vprev = fhp->vprev;
 853                 } else {
 854                         vp->vlast = fhp->vprev;
 855                 }
 856                 if (fhp->vprev) {
 857                         fhp->vprev->vnext = fhp->vnext;
 858                 } else {
 859                         vp->vfirst = fhp->vnext;
 860                 }
 861                 fhp->vnext = NULL;
 862                 fhp->vprev = NULL;
 863                 fhp->vhead = NULL;
 864                 pvr2_channel_done(&fhp->channel);
 865                 pvr2_trace(PVR2_TRACE_STRUCT,
 866                            "Destroying pvr_v4l2_fh id=%p",fhp);
 867                 kfree(fhp);
 868                 if (vp->channel.mc_head->disconnect_flag && !vp->vfirst) {
 869                         pvr2_v4l2_destroy_no_lock(vp);
 870                 }
 871         } while (0); pvr2_context_exit(mp);
 872         return 0;
 873 }
 874
 875
 876 static int pvr2_v4l2_open(struct inode *inode, struct file *file)
 877 {
 878         struct pvr2_v4l2_dev *dip; /* Our own context pointer */
 879         struct pvr2_v4l2_fh *fhp;
 880         struct pvr2_v4l2 *vp;
 881         struct pvr2_hdw *hdw;
 882
 883         dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase);
 884
 885         vp = dip->v4lp;
 886         hdw = vp->channel.hdw;
 887
 888         pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_open");
 889
 890         if (!pvr2_hdw_dev_ok(hdw)) {
 891                 pvr2_trace(PVR2_TRACE_OPEN_CLOSE,
 892                            "pvr2_v4l2_open: hardware not ready");
 893                 return -EIO;
 894         }
 895
 896         fhp = kzalloc(sizeof(*fhp),GFP_KERNEL);
 897         if (!fhp) {
 898                 return -ENOMEM;
 899         }
 900
 901         init_waitqueue_head(&fhp->wait_data);
 902         fhp->dev_info = dip;
 903
 904         pvr2_context_enter(vp->channel.mc_head); do {
 905                 pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp);
 906                 pvr2_channel_init(&fhp->channel,vp->channel.mc_head);
 907
 908                 fhp->vnext = NULL;
 909                 fhp->vprev = vp->vlast;
 910                 if (vp->vlast) {
 911                         vp->vlast->vnext = fhp;
 912                 } else {
 913                         vp->vfirst = fhp;
 914                 }
 915                 vp->vlast = fhp;
 916                 fhp->vhead = vp;
 917
 918                 /* Opening the /dev/radioX device implies a mode switch.
 919                    So execute that here.  Note that you can get the
 920                    IDENTICAL effect merely by opening the normal video
 921                    device and setting the input appropriately. */
 922                 if (dip->v4l_type == VFL_TYPE_RADIO) {
 923                         struct pvr2_ctrl *cp;
 924                         cp = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_INPUT);
 925                         pvr2_ctrl_get_value(cp,&fhp->prev_input_val);
 926                         pvr2_ctrl_set_value(cp,PVR2_CVAL_INPUT_RADIO);
 927                         pvr2_hdw_commit_ctl(hdw);
 928                 }
 929         } while (0); pvr2_context_exit(vp->channel.mc_head);
 930
 931         fhp->file = file;
 932         file->private_data = fhp;
 933         v4l2_prio_open(&vp->prio,&fhp->prio);
 934
 935         fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw);
 936
 937         return 0;
 938 }
 939
 940
 941 static void pvr2_v4l2_notify(struct pvr2_v4l2_fh *fhp)
 942 {
 943         wake_up(&fhp->wait_data);
 944 }
 945
 946 static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh)
 947 {
 948         int ret;
 949         struct pvr2_stream *sp;
 950         struct pvr2_hdw *hdw;
 951         if (fh->rhp) return 0;
 952
 953         if (!fh->dev_info->stream) {
 954                 /* No stream defined for this node.  This means that we're
 955                    not currently allowed to stream from this node. */
 956                 return -EPERM;
 957         }
 958
 959         /* First read() attempt.  Try to claim the stream and start
 960            it... */
 961         if ((ret = pvr2_channel_claim_stream(&fh->channel,
 962                                              fh->dev_info->stream)) != 0) {
 963                 /* Someone else must already have it */
 964                 return ret;
 965         }
 966
 967         fh->rhp = pvr2_channel_create_mpeg_stream(fh->dev_info->stream);
 968         if (!fh->rhp) {
 969                 pvr2_channel_claim_stream(&fh->channel,NULL);
 970                 return -ENOMEM;
 971         }
 972
 973         hdw = fh->channel.mc_head->hdw;
 974         sp = fh->dev_info->stream->stream;
 975         pvr2_stream_set_callback(sp,(pvr2_stream_callback)pvr2_v4l2_notify,fh);
 976         pvr2_hdw_set_stream_type(hdw,fh->dev_info->config);
 977         pvr2_hdw_set_streaming(hdw,!0);
 978         ret = pvr2_ioread_set_enabled(fh->rhp,!0);
 979
 980         return ret;
 981 }
 982
 983
 984 static ssize_t pvr2_v4l2_read(struct file *file,
 985                               char __user *buff, size_t count, loff_t *ppos)
 986 {
 987         struct pvr2_v4l2_fh *fh = file->private_data;
 988         int ret;
 989
 990         if (fh->fw_mode_flag) {
 991                 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 992                 char *tbuf;
 993                 int c1,c2;
 994                 int tcnt = 0;
 995                 unsigned int offs = *ppos;
 996
 997                 tbuf = kmalloc(PAGE_SIZE,GFP_KERNEL);
 998                 if (!tbuf) return -ENOMEM;
 999
1000                 while (count) {
1001                         c1 = count;
1002                         if (c1 > PAGE_SIZE) c1 = PAGE_SIZE;
1003                         c2 = pvr2_hdw_cpufw_get(hdw,offs,tbuf,c1);
1004                         if (c2 < 0) {
1005                                 tcnt = c2;
1006                                 break;
1007                         }
1008                         if (!c2) break;
1009                         if (copy_to_user(buff,tbuf,c2)) {
1010                                 tcnt = -EFAULT;
1011                                 break;
1012                         }
1013                         offs += c2;
1014                         tcnt += c2;
1015                         buff += c2;
1016                         count -= c2;
1017                         *ppos += c2;
1018                 }
1019                 kfree(tbuf);
1020                 return tcnt;
1021         }
1022
1023         if (!fh->rhp) {
1024                 ret = pvr2_v4l2_iosetup(fh);
1025                 if (ret) {
1026                         return ret;
1027                 }
1028         }
1029
1030         for (;;) {
1031                 ret = pvr2_ioread_read(fh->rhp,buff,count);
1032                 if (ret >= 0) break;
1033                 if (ret != -EAGAIN) break;
1034                 if (file->f_flags & O_NONBLOCK) break;
1035                 /* Doing blocking I/O.  Wait here. */
1036                 ret = wait_event_interruptible(
1037                         fh->wait_data,
1038                         pvr2_ioread_avail(fh->rhp) >= 0);
1039                 if (ret < 0) break;
1040         }
1041
1042         return ret;
1043 }
1044
1045
1046 static unsigned int pvr2_v4l2_poll(struct file *file, poll_table *wait)
1047 {
1048         unsigned int mask = 0;
1049         struct pvr2_v4l2_fh *fh = file->private_data;
1050         int ret;
1051
1052         if (fh->fw_mode_flag) {
1053                 mask |= POLLIN | POLLRDNORM;
1054                 return mask;
1055         }
1056
1057         if (!fh->rhp) {
1058                 ret = pvr2_v4l2_iosetup(fh);
1059                 if (ret) return POLLERR;
1060         }
1061
1062         poll_wait(file,&fh->wait_data,wait);
1063
1064         if (pvr2_ioread_avail(fh->rhp) >= 0) {
1065                 mask |= POLLIN | POLLRDNORM;
1066         }
1067
1068         return mask;
1069 }
1070
1071
1072 static const struct file_operations vdev_fops = {
1073         .owner      = THIS_MODULE,
1074         .open       = pvr2_v4l2_open,
1075         .release    = pvr2_v4l2_release,
1076         .read       = pvr2_v4l2_read,
1077         .ioctl      = pvr2_v4l2_ioctl,
1078         .llseek     = no_llseek,
1079         .poll       = pvr2_v4l2_poll,
1080 };
1081
1082
1083 #define VID_HARDWARE_PVRUSB2    38  /* FIXME : need a good value */
1084
1085 static struct video_device vdev_template = {
1086         .owner      = THIS_MODULE,
1087         .type       = VID_TYPE_CAPTURE | VID_TYPE_TUNER,
1088         .type2      = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE
1089                        | V4L2_CAP_TUNER | V4L2_CAP_AUDIO
1090                        | V4L2_CAP_READWRITE),
1091         .hardware   = VID_HARDWARE_PVRUSB2,
1092         .fops       = &vdev_fops,
1093 };
1094
1095
1096 static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
1097                                struct pvr2_v4l2 *vp,
1098                                int v4l_type)
1099 {
1100         int mindevnum;
1101         int unit_number;
1102         int *nr_ptr = 0;
1103         dip->v4lp = vp;
1104
1105
1106         dip->v4l_type = v4l_type;
1107         switch (v4l_type) {
1108         case VFL_TYPE_GRABBER:
1109                 dip->stream = &vp->channel.mc_head->video_stream;
1110                 dip->config = pvr2_config_mpeg;
1111                 dip->minor_type = pvr2_v4l_type_video;
1112                 nr_ptr = video_nr;
1113                 if (!dip->stream) {
1114                         err("Failed to set up pvrusb2 v4l video dev"
1115                             " due to missing stream instance");
1116                         return;
1117                 }
1118                 break;
1119         case VFL_TYPE_VBI:
1120                 dip->config = pvr2_config_vbi;
1121                 dip->minor_type = pvr2_v4l_type_vbi;
1122                 nr_ptr = vbi_nr;
1123                 break;
1124         case VFL_TYPE_RADIO:
1125                 dip->stream = &vp->channel.mc_head->video_stream;
1126                 dip->config = pvr2_config_mpeg;
1127                 dip->minor_type = pvr2_v4l_type_radio;
1128                 nr_ptr = radio_nr;
1129                 break;
1130         default:
1131                 /* Bail out (this should be impossible) */
1132                 err("Failed to set up pvrusb2 v4l dev"
1133                     " due to unrecognized config");
1134                 return;
1135         }
1136
1137         memcpy(&dip->devbase,&vdev_template,sizeof(vdev_template));
1138         dip->devbase.release = pvr2_video_device_release;
1139
1140         mindevnum = -1;
1141         unit_number = pvr2_hdw_get_unit_number(vp->channel.mc_head->hdw);
1142         if (nr_ptr && (unit_number >= 0) && (unit_number < PVR_NUM)) {
1143                 mindevnum = nr_ptr[unit_number];
1144         }
1145         if ((video_register_device(&dip->devbase,
1146                                    dip->v4l_type, mindevnum) < 0) &&
1147             (video_register_device(&dip->devbase,
1148                                    dip->v4l_type, -1) < 0)) {
1149                 err("Failed to register pvrusb2 v4l device");
1150         }
1151
1152         printk(KERN_INFO "pvrusb2: registered device %s%u [%s]\n",
1153                get_v4l_name(dip->v4l_type),dip->devbase.minor & 0x1f,
1154                pvr2_config_get_name(dip->config));
1155
1156         pvr2_hdw_v4l_store_minor_number(vp->channel.mc_head->hdw,
1157                                         dip->minor_type,dip->devbase.minor);
1158 }
1159
1160
1161 struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp)
1162 {
1163         struct pvr2_v4l2 *vp;
1164
1165         vp = kzalloc(sizeof(*vp),GFP_KERNEL);
1166         if (!vp) return vp;
1167         vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL);
1168         vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL);
1169         if (!(vp->dev_video && vp->dev_radio)) {
1170                 kfree(vp->dev_video);
1171                 kfree(vp->dev_radio);
1172                 kfree(vp);
1173                 return NULL;
1174         }
1175         pvr2_channel_init(&vp->channel,mnp);
1176         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_v4l2 id=%p",vp);
1177
1178         vp->channel.check_func = pvr2_v4l2_internal_check;
1179
1180         /* register streams */
1181         pvr2_v4l2_dev_init(vp->dev_video,vp,VFL_TYPE_GRABBER);
1182         pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO);
1183
1184         return vp;
1185 }
1186
1187 /*
1188   Stuff for Emacs to see, in order to encourage consistent editing style:
1189   *** Local Variables: ***
1190   *** mode: c ***
1191   *** fill-column: 75 ***
1192   *** tab-width: 8 ***
1193   *** c-basic-offset: 8 ***
1194   *** End: ***
1195   */