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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/slab.h>
  10 #include "pvrusb2-context.h"
  11 #include "pvrusb2-hdw.h"
  12 #include "pvrusb2.h"
  13 #include "pvrusb2-debug.h"
  14 #include "pvrusb2-v4l2.h"
  15 #include "pvrusb2-ioread.h"
  16 #include <linux/videodev2.h>
  17 #include <linux/module.h>
  18 #include <media/v4l2-dev.h>
  19 #include <media/v4l2-device.h>
  20 #include <media/v4l2-fh.h>
  21 #include <media/v4l2-common.h>
  22 #include <media/v4l2-ioctl.h>
  23
  24 struct pvr2_v4l2_dev;
  25 struct pvr2_v4l2_fh;
  26 struct pvr2_v4l2;
  27
  28 struct pvr2_v4l2_dev {
  29         struct video_device devbase; /* MUST be first! */
  30         struct pvr2_v4l2 *v4lp;
  31         struct pvr2_context_stream *stream;
  32         /* Information about this device: */
  33         enum pvr2_config config; /* Expected stream format */
  34         int v4l_type; /* V4L defined type for this device node */
  35         enum pvr2_v4l_type minor_type; /* pvr2-understood minor device type */
  36 };
  37
  38 struct pvr2_v4l2_fh {
  39         struct v4l2_fh fh;
  40         struct pvr2_channel channel;
  41         struct pvr2_v4l2_dev *pdi;
  42         struct pvr2_ioread *rhp;
  43         struct file *file;
  44         wait_queue_head_t wait_data;
  45         int fw_mode_flag;
  46         /* Map contiguous ordinal value to input id */
  47         unsigned char *input_map;
  48         unsigned int input_cnt;
  49 };
  50
  51 struct pvr2_v4l2 {
  52         struct pvr2_channel channel;
  53
  54         /* streams - Note that these must be separately, individually,
  55          * allocated pointers.  This is because the v4l core is going to
  56          * manage their deletion - separately, individually...  */
  57         struct pvr2_v4l2_dev *dev_video;
  58         struct pvr2_v4l2_dev *dev_radio;
  59 };
  60
  61 static int video_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
  62 module_param_array(video_nr, int, NULL, 0444);
  63 MODULE_PARM_DESC(video_nr, "Offset for device's video dev minor");
  64 static int radio_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
  65 module_param_array(radio_nr, int, NULL, 0444);
  66 MODULE_PARM_DESC(radio_nr, "Offset for device's radio dev minor");
  67 static int vbi_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
  68 module_param_array(vbi_nr, int, NULL, 0444);
  69 MODULE_PARM_DESC(vbi_nr, "Offset for device's vbi dev minor");
  70
  71 #define PVR_FORMAT_PIX  0
  72 #define PVR_FORMAT_VBI  1
  73
  74 static struct v4l2_format pvr_format [] = {
  75         [PVR_FORMAT_PIX] = {
  76                 .type   = V4L2_BUF_TYPE_VIDEO_CAPTURE,
  77                 .fmt    = {
  78                         .pix        = {
  79                                 .width          = 720,
  80                                 .height         = 576,
  81                                 .pixelformat    = V4L2_PIX_FMT_MPEG,
  82                                 .field          = V4L2_FIELD_INTERLACED,
  83                                 /* FIXME : Don't know what to put here... */
  84                                 .sizeimage      = 32 * 1024,
  85                         }
  86                 }
  87         },
  88         [PVR_FORMAT_VBI] = {
  89                 .type   = V4L2_BUF_TYPE_VBI_CAPTURE,
  90                 .fmt    = {
  91                         .vbi        = {
  92                                 .sampling_rate = 27000000,
  93                                 .offset = 248,
  94                                 .samples_per_line = 1443,
  95                                 .sample_format = V4L2_PIX_FMT_GREY,
  96                                 .start = { 0, 0 },
  97                                 .count = { 0, 0 },
  98                                 .flags = 0,
  99                         }
 100                 }
 101         }
 102 };
 103
 104
 105
 106 /*
 107  * This is part of Video 4 Linux API. These procedures handle ioctl() calls.
 108  */
 109 static int pvr2_querycap(struct file *file, void *priv, struct v4l2_capability *cap)
 110 {
 111         struct pvr2_v4l2_fh *fh = file->private_data;
 112         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 113
 114         strscpy(cap->driver, "pvrusb2", sizeof(cap->driver));
 115         strscpy(cap->bus_info, pvr2_hdw_get_bus_info(hdw),
 116                 sizeof(cap->bus_info));
 117         strscpy(cap->card, pvr2_hdw_get_desc(hdw), sizeof(cap->card));
 118         cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
 119                             V4L2_CAP_AUDIO | V4L2_CAP_RADIO |
 120                             V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS;
 121         return 0;
 122 }
 123
 124 static int pvr2_g_std(struct file *file, void *priv, v4l2_std_id *std)
 125 {
 126         struct pvr2_v4l2_fh *fh = file->private_data;
 127         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 128         int val = 0;
 129         int ret;
 130
 131         ret = pvr2_ctrl_get_value(
 132                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDCUR), &val);
 133         *std = val;
 134         return ret;
 135 }
 136
 137 static int pvr2_s_std(struct file *file, void *priv, v4l2_std_id std)
 138 {
 139         struct pvr2_v4l2_fh *fh = file->private_data;
 140         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 141         int ret;
 142
 143         ret = pvr2_ctrl_set_value(
 144                 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDCUR), std);
 145         pvr2_hdw_commit_ctl(hdw);
 146         return ret;
 147 }
 148
 149 static int pvr2_querystd(struct file *file, void *priv, v4l2_std_id *std)
 150 {
 151         struct pvr2_v4l2_fh *fh = file->private_data;
 152         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 153         int val = 0;
 154         int ret;
 155
 156         ret = pvr2_ctrl_get_value(
 157                 pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_STDDETECT), &val);
 158         *std = val;
 159         return ret;
 160 }
 161
 162 static int pvr2_enum_input(struct file *file, void *priv, struct v4l2_input *vi)
 163 {
 164         struct pvr2_v4l2_fh *fh = file->private_data;
 165         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 166         struct pvr2_ctrl *cptr;
 167         struct v4l2_input tmp;
 168         unsigned int cnt;
 169         int val;
 170
 171         cptr = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);
 172
 173         memset(&tmp, 0, sizeof(tmp));
 174         tmp.index = vi->index;
 175         if (vi->index >= fh->input_cnt)
 176                 return -EINVAL;
 177         val = fh->input_map[vi->index];
 178         switch (val) {
 179         case PVR2_CVAL_INPUT_TV:
 180         case PVR2_CVAL_INPUT_DTV:
 181         case PVR2_CVAL_INPUT_RADIO:
 182                 tmp.type = V4L2_INPUT_TYPE_TUNER;
 183                 break;
 184         case PVR2_CVAL_INPUT_SVIDEO:
 185         case PVR2_CVAL_INPUT_COMPOSITE:
 186                 tmp.type = V4L2_INPUT_TYPE_CAMERA;
 187                 break;
 188         default:
 189                 return -EINVAL;
 190         }
 191
 192         cnt = 0;
 193         pvr2_ctrl_get_valname(cptr, val,
 194                         tmp.name, sizeof(tmp.name) - 1, &cnt);
 195         tmp.name[cnt] = 0;
 196
 197         /* Don't bother with audioset, since this driver currently
 198            always switches the audio whenever the video is
 199            switched. */
 200
 201         /* Handling std is a tougher problem.  It doesn't make
 202            sense in cases where a device might be multi-standard.
 203            We could just copy out the current value for the
 204            standard, but it can change over time.  For now just
 205            leave it zero. */
 206         *vi = tmp;
 207         return 0;
 208 }
 209
 210 static int pvr2_g_input(struct file *file, void *priv, unsigned int *i)
 211 {
 212         struct pvr2_v4l2_fh *fh = file->private_data;
 213         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 214         unsigned int idx;
 215         struct pvr2_ctrl *cptr;
 216         int val;
 217         int ret;
 218
 219         cptr = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);
 220         val = 0;
 221         ret = pvr2_ctrl_get_value(cptr, &val);
 222         *i = 0;
 223         for (idx = 0; idx < fh->input_cnt; idx++) {
 224                 if (fh->input_map[idx] == val) {
 225                         *i = idx;
 226                         break;
 227                 }
 228         }
 229         return ret;
 230 }
 231
 232 static int pvr2_s_input(struct file *file, void *priv, unsigned int inp)
 233 {
 234         struct pvr2_v4l2_fh *fh = file->private_data;
 235         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 236         int ret;
 237
 238         if (inp >= fh->input_cnt)
 239                 return -EINVAL;
 240         ret = pvr2_ctrl_set_value(
 241                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT),
 242                         fh->input_map[inp]);
 243         pvr2_hdw_commit_ctl(hdw);
 244         return ret;
 245 }
 246
 247 static int pvr2_enumaudio(struct file *file, void *priv, struct v4l2_audio *vin)
 248 {
 249         /* pkt: FIXME: We are returning one "fake" input here
 250            which could very well be called "whatever_we_like".
 251            This is for apps that want to see an audio input
 252            just to feel comfortable, as well as to test if
 253            it can do stereo or sth. There is actually no guarantee
 254            that the actual audio input cannot change behind the app's
 255            back, but most applications should not mind that either.
 256
 257            Hopefully, mplayer people will work with us on this (this
 258            whole mess is to support mplayer pvr://), or Hans will come
 259            up with a more standard way to say "we have inputs but we
 260            don 't want you to change them independent of video" which
 261            will sort this mess.
 262          */
 263
 264         if (vin->index > 0)
 265                 return -EINVAL;
 266         strscpy(vin->name, "PVRUSB2 Audio", sizeof(vin->name));
 267         vin->capability = V4L2_AUDCAP_STEREO;
 268         return 0;
 269 }
 270
 271 static int pvr2_g_audio(struct file *file, void *priv, struct v4l2_audio *vin)
 272 {
 273         /* pkt: FIXME: see above comment (VIDIOC_ENUMAUDIO) */
 274         vin->index = 0;
 275         strscpy(vin->name, "PVRUSB2 Audio", sizeof(vin->name));
 276         vin->capability = V4L2_AUDCAP_STEREO;
 277         return 0;
 278 }
 279
 280 static int pvr2_s_audio(struct file *file, void *priv, const struct v4l2_audio *vout)
 281 {
 282         if (vout->index)
 283                 return -EINVAL;
 284         return 0;
 285 }
 286
 287 static int pvr2_g_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
 288 {
 289         struct pvr2_v4l2_fh *fh = file->private_data;
 290         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 291
 292         if (vt->index != 0)
 293                 return -EINVAL; /* Only answer for the 1st tuner */
 294
 295         pvr2_hdw_execute_tuner_poll(hdw);
 296         return pvr2_hdw_get_tuner_status(hdw, vt);
 297 }
 298
 299 static int pvr2_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *vt)
 300 {
 301         struct pvr2_v4l2_fh *fh = file->private_data;
 302         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 303         int ret;
 304
 305         if (vt->index != 0)
 306                 return -EINVAL;
 307
 308         ret = pvr2_ctrl_set_value(
 309                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_AUDIOMODE),
 310                         vt->audmode);
 311         pvr2_hdw_commit_ctl(hdw);
 312         return ret;
 313 }
 314
 315 static int pvr2_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *vf)
 316 {
 317         struct pvr2_v4l2_fh *fh = file->private_data;
 318         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 319         unsigned long fv;
 320         struct v4l2_tuner vt;
 321         int cur_input;
 322         struct pvr2_ctrl *ctrlp;
 323         int ret;
 324
 325         ret = pvr2_hdw_get_tuner_status(hdw, &vt);
 326         if (ret != 0)
 327                 return ret;
 328         ctrlp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT);
 329         ret = pvr2_ctrl_get_value(ctrlp, &cur_input);
 330         if (ret != 0)
 331                 return ret;
 332         if (vf->type == V4L2_TUNER_RADIO) {
 333                 if (cur_input != PVR2_CVAL_INPUT_RADIO)
 334                         pvr2_ctrl_set_value(ctrlp, PVR2_CVAL_INPUT_RADIO);
 335         } else {
 336                 if (cur_input == PVR2_CVAL_INPUT_RADIO)
 337                         pvr2_ctrl_set_value(ctrlp, PVR2_CVAL_INPUT_TV);
 338         }
 339         fv = vf->frequency;
 340         if (vt.capability & V4L2_TUNER_CAP_LOW)
 341                 fv = (fv * 125) / 2;
 342         else
 343                 fv = fv * 62500;
 344         ret = pvr2_ctrl_set_value(
 345                         pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_FREQUENCY),fv);
 346         pvr2_hdw_commit_ctl(hdw);
 347         return ret;
 348 }
 349
 350 static int pvr2_g_frequency(struct file *file, void *priv, struct v4l2_frequency *vf)
 351 {
 352         struct pvr2_v4l2_fh *fh = file->private_data;
 353         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 354         int val = 0;
 355         int cur_input;
 356         struct v4l2_tuner vt;
 357         int ret;
 358
 359         ret = pvr2_hdw_get_tuner_status(hdw, &vt);
 360         if (ret != 0)
 361                 return ret;
 362         ret = pvr2_ctrl_get_value(
 363                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_FREQUENCY),
 364                         &val);
 365         if (ret != 0)
 366                 return ret;
 367         pvr2_ctrl_get_value(
 368                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_INPUT),
 369                         &cur_input);
 370         if (cur_input == PVR2_CVAL_INPUT_RADIO)
 371                 vf->type = V4L2_TUNER_RADIO;
 372         else
 373                 vf->type = V4L2_TUNER_ANALOG_TV;
 374         if (vt.capability & V4L2_TUNER_CAP_LOW)
 375                 val = (val * 2) / 125;
 376         else
 377                 val /= 62500;
 378         vf->frequency = val;
 379         return 0;
 380 }
 381
 382 static int pvr2_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *fd)
 383 {
 384         /* Only one format is supported: MPEG. */
 385         if (fd->index)
 386                 return -EINVAL;
 387
 388         fd->pixelformat = V4L2_PIX_FMT_MPEG;
 389         return 0;
 390 }
 391
 392 static int pvr2_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)
 393 {
 394         struct pvr2_v4l2_fh *fh = file->private_data;
 395         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 396         int val;
 397
 398         memcpy(vf, &pvr_format[PVR_FORMAT_PIX], sizeof(struct v4l2_format));
 399         val = 0;
 400         pvr2_ctrl_get_value(
 401                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES),
 402                         &val);
 403         vf->fmt.pix.width = val;
 404         val = 0;
 405         pvr2_ctrl_get_value(
 406                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES),
 407                         &val);
 408         vf->fmt.pix.height = val;
 409         return 0;
 410 }
 411
 412 static int pvr2_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)
 413 {
 414         struct pvr2_v4l2_fh *fh = file->private_data;
 415         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 416         int lmin, lmax, ldef;
 417         struct pvr2_ctrl *hcp, *vcp;
 418         int h = vf->fmt.pix.height;
 419         int w = vf->fmt.pix.width;
 420
 421         hcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES);
 422         vcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES);
 423
 424         lmin = pvr2_ctrl_get_min(hcp);
 425         lmax = pvr2_ctrl_get_max(hcp);
 426         pvr2_ctrl_get_def(hcp, &ldef);
 427         if (w == -1)
 428                 w = ldef;
 429         else if (w < lmin)
 430                 w = lmin;
 431         else if (w > lmax)
 432                 w = lmax;
 433         lmin = pvr2_ctrl_get_min(vcp);
 434         lmax = pvr2_ctrl_get_max(vcp);
 435         pvr2_ctrl_get_def(vcp, &ldef);
 436         if (h == -1)
 437                 h = ldef;
 438         else if (h < lmin)
 439                 h = lmin;
 440         else if (h > lmax)
 441                 h = lmax;
 442
 443         memcpy(vf, &pvr_format[PVR_FORMAT_PIX],
 444                         sizeof(struct v4l2_format));
 445         vf->fmt.pix.width = w;
 446         vf->fmt.pix.height = h;
 447         return 0;
 448 }
 449
 450 static int pvr2_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *vf)
 451 {
 452         struct pvr2_v4l2_fh *fh = file->private_data;
 453         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 454         struct pvr2_ctrl *hcp, *vcp;
 455         int ret = pvr2_try_fmt_vid_cap(file, fh, vf);
 456
 457         if (ret)
 458                 return ret;
 459         hcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_HRES);
 460         vcp = pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_VRES);
 461         pvr2_ctrl_set_value(hcp, vf->fmt.pix.width);
 462         pvr2_ctrl_set_value(vcp, vf->fmt.pix.height);
 463         pvr2_hdw_commit_ctl(hdw);
 464         return 0;
 465 }
 466
 467 static int pvr2_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 468 {
 469         struct pvr2_v4l2_fh *fh = file->private_data;
 470         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 471         struct pvr2_v4l2_dev *pdi = fh->pdi;
 472         int ret;
 473
 474         if (!fh->pdi->stream) {
 475                 /* No stream defined for this node.  This means
 476                    that we're not currently allowed to stream from
 477                    this node. */
 478                 return -EPERM;
 479         }
 480         ret = pvr2_hdw_set_stream_type(hdw, pdi->config);
 481         if (ret < 0)
 482                 return ret;
 483         return pvr2_hdw_set_streaming(hdw, !0);
 484 }
 485
 486 static int pvr2_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 487 {
 488         struct pvr2_v4l2_fh *fh = file->private_data;
 489         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 490
 491         if (!fh->pdi->stream) {
 492                 /* No stream defined for this node.  This means
 493                    that we're not currently allowed to stream from
 494                    this node. */
 495                 return -EPERM;
 496         }
 497         return pvr2_hdw_set_streaming(hdw, 0);
 498 }
 499
 500 static int pvr2_queryctrl(struct file *file, void *priv,
 501                 struct v4l2_queryctrl *vc)
 502 {
 503         struct pvr2_v4l2_fh *fh = file->private_data;
 504         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 505         struct pvr2_ctrl *cptr;
 506         int val;
 507
 508         if (vc->id & V4L2_CTRL_FLAG_NEXT_CTRL) {
 509                 cptr = pvr2_hdw_get_ctrl_nextv4l(
 510                                 hdw, (vc->id & ~V4L2_CTRL_FLAG_NEXT_CTRL));
 511                 if (cptr)
 512                         vc->id = pvr2_ctrl_get_v4lid(cptr);
 513         } else {
 514                 cptr = pvr2_hdw_get_ctrl_v4l(hdw, vc->id);
 515         }
 516         if (!cptr) {
 517                 pvr2_trace(PVR2_TRACE_V4LIOCTL,
 518                                 "QUERYCTRL id=0x%x not implemented here",
 519                                 vc->id);
 520                 return -EINVAL;
 521         }
 522
 523         pvr2_trace(PVR2_TRACE_V4LIOCTL,
 524                         "QUERYCTRL id=0x%x mapping name=%s (%s)",
 525                         vc->id, pvr2_ctrl_get_name(cptr),
 526                         pvr2_ctrl_get_desc(cptr));
 527         strscpy(vc->name, pvr2_ctrl_get_desc(cptr), sizeof(vc->name));
 528         vc->flags = pvr2_ctrl_get_v4lflags(cptr);
 529         pvr2_ctrl_get_def(cptr, &val);
 530         vc->default_value = val;
 531         switch (pvr2_ctrl_get_type(cptr)) {
 532         case pvr2_ctl_enum:
 533                 vc->type = V4L2_CTRL_TYPE_MENU;
 534                 vc->minimum = 0;
 535                 vc->maximum = pvr2_ctrl_get_cnt(cptr) - 1;
 536                 vc->step = 1;
 537                 break;
 538         case pvr2_ctl_bool:
 539                 vc->type = V4L2_CTRL_TYPE_BOOLEAN;
 540                 vc->minimum = 0;
 541                 vc->maximum = 1;
 542                 vc->step = 1;
 543                 break;
 544         case pvr2_ctl_int:
 545                 vc->type = V4L2_CTRL_TYPE_INTEGER;
 546                 vc->minimum = pvr2_ctrl_get_min(cptr);
 547                 vc->maximum = pvr2_ctrl_get_max(cptr);
 548                 vc->step = 1;
 549                 break;
 550         default:
 551                 pvr2_trace(PVR2_TRACE_V4LIOCTL,
 552                                 "QUERYCTRL id=0x%x name=%s not mappable",
 553                                 vc->id, pvr2_ctrl_get_name(cptr));
 554                 return -EINVAL;
 555         }
 556         return 0;
 557 }
 558
 559 static int pvr2_querymenu(struct file *file, void *priv, struct v4l2_querymenu *vm)
 560 {
 561         struct pvr2_v4l2_fh *fh = file->private_data;
 562         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 563         unsigned int cnt = 0;
 564         int ret;
 565
 566         ret = pvr2_ctrl_get_valname(pvr2_hdw_get_ctrl_v4l(hdw, vm->id),
 567                         vm->index,
 568                         vm->name, sizeof(vm->name) - 1,
 569                         &cnt);
 570         vm->name[cnt] = 0;
 571         return ret;
 572 }
 573
 574 static int pvr2_g_ctrl(struct file *file, void *priv, struct v4l2_control *vc)
 575 {
 576         struct pvr2_v4l2_fh *fh = file->private_data;
 577         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 578         int val = 0;
 579         int ret;
 580
 581         ret = pvr2_ctrl_get_value(pvr2_hdw_get_ctrl_v4l(hdw, vc->id),
 582                         &val);
 583         vc->value = val;
 584         return ret;
 585 }
 586
 587 static int pvr2_s_ctrl(struct file *file, void *priv, struct v4l2_control *vc)
 588 {
 589         struct pvr2_v4l2_fh *fh = file->private_data;
 590         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 591         int ret;
 592
 593         ret = pvr2_ctrl_set_value(pvr2_hdw_get_ctrl_v4l(hdw, vc->id),
 594                         vc->value);
 595         pvr2_hdw_commit_ctl(hdw);
 596         return ret;
 597 }
 598
 599 static int pvr2_g_ext_ctrls(struct file *file, void *priv,
 600                                         struct v4l2_ext_controls *ctls)
 601 {
 602         struct pvr2_v4l2_fh *fh = file->private_data;
 603         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 604         struct v4l2_ext_control *ctrl;
 605         struct pvr2_ctrl *cptr;
 606         unsigned int idx;
 607         int val;
 608         int ret;
 609
 610         ret = 0;
 611         for (idx = 0; idx < ctls->count; idx++) {
 612                 ctrl = ctls->controls + idx;
 613                 cptr = pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id);
 614                 if (cptr) {
 615                         if (ctls->which == V4L2_CTRL_WHICH_DEF_VAL)
 616                                 pvr2_ctrl_get_def(cptr, &val);
 617                         else
 618                                 ret = pvr2_ctrl_get_value(cptr, &val);
 619                 } else
 620                         ret = -EINVAL;
 621
 622                 if (ret) {
 623                         ctls->error_idx = idx;
 624                         return ret;
 625                 }
 626                 /* Ensure that if read as a 64 bit value, the user
 627                    will still get a hopefully sane value */
 628                 ctrl->value64 = 0;
 629                 ctrl->value = val;
 630         }
 631         return 0;
 632 }
 633
 634 static int pvr2_s_ext_ctrls(struct file *file, void *priv,
 635                 struct v4l2_ext_controls *ctls)
 636 {
 637         struct pvr2_v4l2_fh *fh = file->private_data;
 638         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 639         struct v4l2_ext_control *ctrl;
 640         unsigned int idx;
 641         int ret;
 642
 643         /* Default value cannot be changed */
 644         if (ctls->which == V4L2_CTRL_WHICH_DEF_VAL)
 645                 return -EINVAL;
 646
 647         ret = 0;
 648         for (idx = 0; idx < ctls->count; idx++) {
 649                 ctrl = ctls->controls + idx;
 650                 ret = pvr2_ctrl_set_value(
 651                                 pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id),
 652                                 ctrl->value);
 653                 if (ret) {
 654                         ctls->error_idx = idx;
 655                         goto commit;
 656                 }
 657         }
 658 commit:
 659         pvr2_hdw_commit_ctl(hdw);
 660         return ret;
 661 }
 662
 663 static int pvr2_try_ext_ctrls(struct file *file, void *priv,
 664                 struct v4l2_ext_controls *ctls)
 665 {
 666         struct pvr2_v4l2_fh *fh = file->private_data;
 667         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 668         struct v4l2_ext_control *ctrl;
 669         struct pvr2_ctrl *pctl;
 670         unsigned int idx;
 671
 672         /* For the moment just validate that the requested control
 673            actually exists. */
 674         for (idx = 0; idx < ctls->count; idx++) {
 675                 ctrl = ctls->controls + idx;
 676                 pctl = pvr2_hdw_get_ctrl_v4l(hdw, ctrl->id);
 677                 if (!pctl) {
 678                         ctls->error_idx = idx;
 679                         return -EINVAL;
 680                 }
 681         }
 682         return 0;
 683 }
 684
 685 static int pvr2_g_pixelaspect(struct file *file, void *priv,
 686                               int type, struct v4l2_fract *f)
 687 {
 688         struct pvr2_v4l2_fh *fh = file->private_data;
 689         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 690         struct v4l2_cropcap cap = { .type = type };
 691         int ret;
 692
 693         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 694                 return -EINVAL;
 695         ret = pvr2_hdw_get_cropcap(hdw, &cap);
 696         if (!ret)
 697                 *f = cap.pixelaspect;
 698         return ret;
 699 }
 700
 701 static int pvr2_g_selection(struct file *file, void *priv,
 702                             struct v4l2_selection *sel)
 703 {
 704         struct pvr2_v4l2_fh *fh = file->private_data;
 705         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 706         struct v4l2_cropcap cap;
 707         int val = 0;
 708         int ret;
 709
 710         if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 711                 return -EINVAL;
 712
 713         cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 714
 715         switch (sel->target) {
 716         case V4L2_SEL_TGT_CROP:
 717                 ret = pvr2_ctrl_get_value(
 718                           pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPL), &val);
 719                 if (ret != 0)
 720                         return -EINVAL;
 721                 sel->r.left = val;
 722                 ret = pvr2_ctrl_get_value(
 723                           pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPT), &val);
 724                 if (ret != 0)
 725                         return -EINVAL;
 726                 sel->r.top = val;
 727                 ret = pvr2_ctrl_get_value(
 728                           pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPW), &val);
 729                 if (ret != 0)
 730                         return -EINVAL;
 731                 sel->r.width = val;
 732                 ret = pvr2_ctrl_get_value(
 733                           pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPH), &val);
 734                 if (ret != 0)
 735                         return -EINVAL;
 736                 sel->r.height = val;
 737                 break;
 738         case V4L2_SEL_TGT_CROP_DEFAULT:
 739                 ret = pvr2_hdw_get_cropcap(hdw, &cap);
 740                 sel->r = cap.defrect;
 741                 break;
 742         case V4L2_SEL_TGT_CROP_BOUNDS:
 743                 ret = pvr2_hdw_get_cropcap(hdw, &cap);
 744                 sel->r = cap.bounds;
 745                 break;
 746         default:
 747                 return -EINVAL;
 748         }
 749         return ret;
 750 }
 751
 752 static int pvr2_s_selection(struct file *file, void *priv,
 753                             struct v4l2_selection *sel)
 754 {
 755         struct pvr2_v4l2_fh *fh = file->private_data;
 756         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 757         int ret;
 758
 759         if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
 760             sel->target != V4L2_SEL_TGT_CROP)
 761                 return -EINVAL;
 762         ret = pvr2_ctrl_set_value(
 763                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPL),
 764                         sel->r.left);
 765         if (ret != 0)
 766                 goto commit;
 767         ret = pvr2_ctrl_set_value(
 768                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPT),
 769                         sel->r.top);
 770         if (ret != 0)
 771                 goto commit;
 772         ret = pvr2_ctrl_set_value(
 773                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPW),
 774                         sel->r.width);
 775         if (ret != 0)
 776                 goto commit;
 777         ret = pvr2_ctrl_set_value(
 778                         pvr2_hdw_get_ctrl_by_id(hdw, PVR2_CID_CROPH),
 779                         sel->r.height);
 780 commit:
 781         pvr2_hdw_commit_ctl(hdw);
 782         return ret;
 783 }
 784
 785 static int pvr2_log_status(struct file *file, void *priv)
 786 {
 787         struct pvr2_v4l2_fh *fh = file->private_data;
 788         struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 789
 790         pvr2_hdw_trigger_module_log(hdw);
 791         return 0;
 792 }
 793
 794 static const struct v4l2_ioctl_ops pvr2_ioctl_ops = {
 795         .vidioc_querycap                    = pvr2_querycap,
 796         .vidioc_s_audio                     = pvr2_s_audio,
 797         .vidioc_g_audio                     = pvr2_g_audio,
 798         .vidioc_enumaudio                   = pvr2_enumaudio,
 799         .vidioc_enum_input                  = pvr2_enum_input,
 800         .vidioc_g_pixelaspect               = pvr2_g_pixelaspect,
 801         .vidioc_s_selection                 = pvr2_s_selection,
 802         .vidioc_g_selection                 = pvr2_g_selection,
 803         .vidioc_g_input                     = pvr2_g_input,
 804         .vidioc_s_input                     = pvr2_s_input,
 805         .vidioc_g_frequency                 = pvr2_g_frequency,
 806         .vidioc_s_frequency                 = pvr2_s_frequency,
 807         .vidioc_s_tuner                     = pvr2_s_tuner,
 808         .vidioc_g_tuner                     = pvr2_g_tuner,
 809         .vidioc_g_std                       = pvr2_g_std,
 810         .vidioc_s_std                       = pvr2_s_std,
 811         .vidioc_querystd                    = pvr2_querystd,
 812         .vidioc_log_status                  = pvr2_log_status,
 813         .vidioc_enum_fmt_vid_cap            = pvr2_enum_fmt_vid_cap,
 814         .vidioc_g_fmt_vid_cap               = pvr2_g_fmt_vid_cap,
 815         .vidioc_s_fmt_vid_cap               = pvr2_s_fmt_vid_cap,
 816         .vidioc_try_fmt_vid_cap             = pvr2_try_fmt_vid_cap,
 817         .vidioc_streamon                    = pvr2_streamon,
 818         .vidioc_streamoff                   = pvr2_streamoff,
 819         .vidioc_queryctrl                   = pvr2_queryctrl,
 820         .vidioc_querymenu                   = pvr2_querymenu,
 821         .vidioc_g_ctrl                      = pvr2_g_ctrl,
 822         .vidioc_s_ctrl                      = pvr2_s_ctrl,
 823         .vidioc_g_ext_ctrls                 = pvr2_g_ext_ctrls,
 824         .vidioc_s_ext_ctrls                 = pvr2_s_ext_ctrls,
 825         .vidioc_try_ext_ctrls               = pvr2_try_ext_ctrls,
 826 };
 827
 828 static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip)
 829 {
 830         struct pvr2_hdw *hdw = dip->v4lp->channel.mc_head->hdw;
 831         enum pvr2_config cfg = dip->config;
 832         char msg[80];
 833         unsigned int mcnt;
 834
 835         /* Construct the unregistration message *before* we actually
 836            perform the unregistration step.  By doing it this way we don't
 837            have to worry about potentially touching deleted resources. */
 838         mcnt = scnprintf(msg, sizeof(msg) - 1,
 839                          "pvrusb2: unregistered device %s [%s]",
 840                          video_device_node_name(&dip->devbase),
 841                          pvr2_config_get_name(cfg));
 842         msg[mcnt] = 0;
 843
 844         pvr2_hdw_v4l_store_minor_number(hdw,dip->minor_type,-1);
 845
 846         /* Paranoia */
 847         dip->v4lp = NULL;
 848         dip->stream = NULL;
 849
 850         /* Actual deallocation happens later when all internal references
 851            are gone. */
 852         video_unregister_device(&dip->devbase);
 853
 854         pr_info("%s\n", msg);
 855
 856 }
 857
 858
 859 static void pvr2_v4l2_dev_disassociate_parent(struct pvr2_v4l2_dev *dip)
 860 {
 861         if (!dip) return;
 862         if (!dip->devbase.v4l2_dev->dev) return;
 863         dip->devbase.v4l2_dev->dev = NULL;
 864         device_move(&dip->devbase.dev, NULL, DPM_ORDER_NONE);
 865 }
 866
 867
 868 static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp)
 869 {
 870         if (vp->dev_video) {
 871                 pvr2_v4l2_dev_destroy(vp->dev_video);
 872                 vp->dev_video = NULL;
 873         }
 874         if (vp->dev_radio) {
 875                 pvr2_v4l2_dev_destroy(vp->dev_radio);
 876                 vp->dev_radio = NULL;
 877         }
 878
 879         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_v4l2 id=%p",vp);
 880         pvr2_channel_done(&vp->channel);
 881         kfree(vp);
 882 }
 883
 884
 885 static void pvr2_video_device_release(struct video_device *vdev)
 886 {
 887         struct pvr2_v4l2_dev *dev;
 888         dev = container_of(vdev,struct pvr2_v4l2_dev,devbase);
 889         kfree(dev);
 890 }
 891
 892
 893 static void pvr2_v4l2_internal_check(struct pvr2_channel *chp)
 894 {
 895         struct pvr2_v4l2 *vp;
 896         vp = container_of(chp,struct pvr2_v4l2,channel);
 897         if (!vp->channel.mc_head->disconnect_flag) return;
 898         pvr2_v4l2_dev_disassociate_parent(vp->dev_video);
 899         pvr2_v4l2_dev_disassociate_parent(vp->dev_radio);
 900         if (!list_empty(&vp->dev_video->devbase.fh_list) ||
 901             (vp->dev_radio &&
 902              !list_empty(&vp->dev_radio->devbase.fh_list))) {
 903                 pvr2_trace(PVR2_TRACE_STRUCT,
 904                            "pvr2_v4l2 internal_check exit-empty id=%p", vp);
 905                 return;
 906         }
 907         pvr2_v4l2_destroy_no_lock(vp);
 908 }
 909
 910
 911 static int pvr2_v4l2_release(struct file *file)
 912 {
 913         struct pvr2_v4l2_fh *fhp = file->private_data;
 914         struct pvr2_v4l2 *vp = fhp->pdi->v4lp;
 915         struct pvr2_hdw *hdw = fhp->channel.mc_head->hdw;
 916
 917         pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release");
 918
 919         if (fhp->rhp) {
 920                 struct pvr2_stream *sp;
 921                 pvr2_hdw_set_streaming(hdw,0);
 922                 sp = pvr2_ioread_get_stream(fhp->rhp);
 923                 if (sp) pvr2_stream_set_callback(sp,NULL,NULL);
 924                 pvr2_ioread_destroy(fhp->rhp);
 925                 fhp->rhp = NULL;
 926         }
 927
 928         v4l2_fh_del(&fhp->fh);
 929         v4l2_fh_exit(&fhp->fh);
 930         file->private_data = NULL;
 931
 932         pvr2_channel_done(&fhp->channel);
 933         pvr2_trace(PVR2_TRACE_STRUCT,
 934                    "Destroying pvr_v4l2_fh id=%p",fhp);
 935         if (fhp->input_map) {
 936                 kfree(fhp->input_map);
 937                 fhp->input_map = NULL;
 938         }
 939         kfree(fhp);
 940         if (vp->channel.mc_head->disconnect_flag &&
 941             list_empty(&vp->dev_video->devbase.fh_list) &&
 942             (!vp->dev_radio ||
 943              list_empty(&vp->dev_radio->devbase.fh_list))) {
 944                 pvr2_v4l2_destroy_no_lock(vp);
 945         }
 946         return 0;
 947 }
 948
 949
 950 static int pvr2_v4l2_open(struct file *file)
 951 {
 952         struct pvr2_v4l2_dev *dip; /* Our own context pointer */
 953         struct pvr2_v4l2_fh *fhp;
 954         struct pvr2_v4l2 *vp;
 955         struct pvr2_hdw *hdw;
 956         unsigned int input_mask = 0;
 957         unsigned int input_cnt,idx;
 958         int ret = 0;
 959
 960         dip = container_of(video_devdata(file),struct pvr2_v4l2_dev,devbase);
 961
 962         vp = dip->v4lp;
 963         hdw = vp->channel.hdw;
 964
 965         pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_open");
 966
 967         if (!pvr2_hdw_dev_ok(hdw)) {
 968                 pvr2_trace(PVR2_TRACE_OPEN_CLOSE,
 969                            "pvr2_v4l2_open: hardware not ready");
 970                 return -EIO;
 971         }
 972
 973         fhp = kzalloc(sizeof(*fhp),GFP_KERNEL);
 974         if (!fhp) {
 975                 return -ENOMEM;
 976         }
 977
 978         v4l2_fh_init(&fhp->fh, &dip->devbase);
 979         init_waitqueue_head(&fhp->wait_data);
 980         fhp->pdi = dip;
 981
 982         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp);
 983         pvr2_channel_init(&fhp->channel,vp->channel.mc_head);
 984
 985         if (dip->v4l_type == VFL_TYPE_RADIO) {
 986                 /* Opening device as a radio, legal input selection subset
 987                    is just the radio. */
 988                 input_mask = (1 << PVR2_CVAL_INPUT_RADIO);
 989         } else {
 990                 /* Opening the main V4L device, legal input selection
 991                    subset includes all analog inputs. */
 992                 input_mask = ((1 << PVR2_CVAL_INPUT_RADIO) |
 993                               (1 << PVR2_CVAL_INPUT_TV) |
 994                               (1 << PVR2_CVAL_INPUT_COMPOSITE) |
 995                               (1 << PVR2_CVAL_INPUT_SVIDEO));
 996         }
 997         ret = pvr2_channel_limit_inputs(&fhp->channel,input_mask);
 998         if (ret) {
 999                 pvr2_channel_done(&fhp->channel);
1000                 pvr2_trace(PVR2_TRACE_STRUCT,
1001                            "Destroying pvr_v4l2_fh id=%p (input mask error)",
1002                            fhp);
1003                 v4l2_fh_exit(&fhp->fh);
1004                 kfree(fhp);
1005                 return ret;
1006         }
1007
1008         input_mask &= pvr2_hdw_get_input_available(hdw);
1009         input_cnt = 0;
1010         for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
1011                 if (input_mask & (1UL << idx)) input_cnt++;
1012         }
1013         fhp->input_cnt = input_cnt;
1014         fhp->input_map = kzalloc(input_cnt,GFP_KERNEL);
1015         if (!fhp->input_map) {
1016                 pvr2_channel_done(&fhp->channel);
1017                 pvr2_trace(PVR2_TRACE_STRUCT,
1018                            "Destroying pvr_v4l2_fh id=%p (input map failure)",
1019                            fhp);
1020                 v4l2_fh_exit(&fhp->fh);
1021                 kfree(fhp);
1022                 return -ENOMEM;
1023         }
1024         input_cnt = 0;
1025         for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
1026                 if (!(input_mask & (1UL << idx))) continue;
1027                 fhp->input_map[input_cnt++] = idx;
1028         }
1029
1030         fhp->file = file;
1031         file->private_data = fhp;
1032
1033         fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw);
1034         v4l2_fh_add(&fhp->fh);
1035
1036         return 0;
1037 }
1038
1039
1040 static void pvr2_v4l2_notify(struct pvr2_v4l2_fh *fhp)
1041 {
1042         wake_up(&fhp->wait_data);
1043 }
1044
1045 static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh)
1046 {
1047         int ret;
1048         struct pvr2_stream *sp;
1049         struct pvr2_hdw *hdw;
1050         if (fh->rhp) return 0;
1051
1052         if (!fh->pdi->stream) {
1053                 /* No stream defined for this node.  This means that we're
1054                    not currently allowed to stream from this node. */
1055                 return -EPERM;
1056         }
1057
1058         /* First read() attempt.  Try to claim the stream and start
1059            it... */
1060         if ((ret = pvr2_channel_claim_stream(&fh->channel,
1061                                              fh->pdi->stream)) != 0) {
1062                 /* Someone else must already have it */
1063                 return ret;
1064         }
1065
1066         fh->rhp = pvr2_channel_create_mpeg_stream(fh->pdi->stream);
1067         if (!fh->rhp) {
1068                 pvr2_channel_claim_stream(&fh->channel,NULL);
1069                 return -ENOMEM;
1070         }
1071
1072         hdw = fh->channel.mc_head->hdw;
1073         sp = fh->pdi->stream->stream;
1074         pvr2_stream_set_callback(sp,(pvr2_stream_callback)pvr2_v4l2_notify,fh);
1075         pvr2_hdw_set_stream_type(hdw,fh->pdi->config);
1076         if ((ret = pvr2_hdw_set_streaming(hdw,!0)) < 0) return ret;
1077         return pvr2_ioread_set_enabled(fh->rhp,!0);
1078 }
1079
1080
1081 static ssize_t pvr2_v4l2_read(struct file *file,
1082                               char __user *buff, size_t count, loff_t *ppos)
1083 {
1084         struct pvr2_v4l2_fh *fh = file->private_data;
1085         int ret;
1086
1087         if (fh->fw_mode_flag) {
1088                 struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
1089                 char *tbuf;
1090                 int c1,c2;
1091                 int tcnt = 0;
1092                 unsigned int offs = *ppos;
1093
1094                 tbuf = kmalloc(PAGE_SIZE,GFP_KERNEL);
1095                 if (!tbuf) return -ENOMEM;
1096
1097                 while (count) {
1098                         c1 = count;
1099                         if (c1 > PAGE_SIZE) c1 = PAGE_SIZE;
1100                         c2 = pvr2_hdw_cpufw_get(hdw,offs,tbuf,c1);
1101                         if (c2 < 0) {
1102                                 tcnt = c2;
1103                                 break;
1104                         }
1105                         if (!c2) break;
1106                         if (copy_to_user(buff,tbuf,c2)) {
1107                                 tcnt = -EFAULT;
1108                                 break;
1109                         }
1110                         offs += c2;
1111                         tcnt += c2;
1112                         buff += c2;
1113                         count -= c2;
1114                         *ppos += c2;
1115                 }
1116                 kfree(tbuf);
1117                 return tcnt;
1118         }
1119
1120         if (!fh->rhp) {
1121                 ret = pvr2_v4l2_iosetup(fh);
1122                 if (ret) {
1123                         return ret;
1124                 }
1125         }
1126
1127         for (;;) {
1128                 ret = pvr2_ioread_read(fh->rhp,buff,count);
1129                 if (ret >= 0) break;
1130                 if (ret != -EAGAIN) break;
1131                 if (file->f_flags & O_NONBLOCK) break;
1132                 /* Doing blocking I/O.  Wait here. */
1133                 ret = wait_event_interruptible(
1134                         fh->wait_data,
1135                         pvr2_ioread_avail(fh->rhp) >= 0);
1136                 if (ret < 0) break;
1137         }
1138
1139         return ret;
1140 }
1141
1142
1143 static __poll_t pvr2_v4l2_poll(struct file *file, poll_table *wait)
1144 {
1145         __poll_t mask = 0;
1146         struct pvr2_v4l2_fh *fh = file->private_data;
1147         int ret;
1148
1149         if (fh->fw_mode_flag) {
1150                 mask |= EPOLLIN | EPOLLRDNORM;
1151                 return mask;
1152         }
1153
1154         if (!fh->rhp) {
1155                 ret = pvr2_v4l2_iosetup(fh);
1156                 if (ret) return EPOLLERR;
1157         }
1158
1159         poll_wait(file,&fh->wait_data,wait);
1160
1161         if (pvr2_ioread_avail(fh->rhp) >= 0) {
1162                 mask |= EPOLLIN | EPOLLRDNORM;
1163         }
1164
1165         return mask;
1166 }
1167
1168
1169 static const struct v4l2_file_operations vdev_fops = {
1170         .owner      = THIS_MODULE,
1171         .open       = pvr2_v4l2_open,
1172         .release    = pvr2_v4l2_release,
1173         .read       = pvr2_v4l2_read,
1174         .unlocked_ioctl = video_ioctl2,
1175         .poll       = pvr2_v4l2_poll,
1176 };
1177
1178
1179 static const struct video_device vdev_template = {
1180         .fops       = &vdev_fops,
1181 };
1182
1183
1184 static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
1185                                struct pvr2_v4l2 *vp,
1186                                int v4l_type)
1187 {
1188         int mindevnum;
1189         int unit_number;
1190         struct pvr2_hdw *hdw;
1191         int *nr_ptr = NULL;
1192         u32 caps = V4L2_CAP_TUNER | V4L2_CAP_READWRITE;
1193
1194         dip->v4lp = vp;
1195
1196         hdw = vp->channel.mc_head->hdw;
1197         dip->v4l_type = v4l_type;
1198         switch (v4l_type) {
1199         case VFL_TYPE_GRABBER:
1200                 dip->stream = &vp->channel.mc_head->video_stream;
1201                 dip->config = pvr2_config_mpeg;
1202                 dip->minor_type = pvr2_v4l_type_video;
1203                 nr_ptr = video_nr;
1204                 caps |= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO;
1205                 if (!dip->stream) {
1206                         pr_err(KBUILD_MODNAME
1207                                 ": Failed to set up pvrusb2 v4l video dev due to missing stream instance\n");
1208                         return;
1209                 }
1210                 break;
1211         case VFL_TYPE_VBI:
1212                 dip->config = pvr2_config_vbi;
1213                 dip->minor_type = pvr2_v4l_type_vbi;
1214                 nr_ptr = vbi_nr;
1215                 caps |= V4L2_CAP_VBI_CAPTURE;
1216                 break;
1217         case VFL_TYPE_RADIO:
1218                 dip->stream = &vp->channel.mc_head->video_stream;
1219                 dip->config = pvr2_config_mpeg;
1220                 dip->minor_type = pvr2_v4l_type_radio;
1221                 nr_ptr = radio_nr;
1222                 caps |= V4L2_CAP_RADIO;
1223                 break;
1224         default:
1225                 /* Bail out (this should be impossible) */
1226                 pr_err(KBUILD_MODNAME ": Failed to set up pvrusb2 v4l dev due to unrecognized config\n");
1227                 return;
1228         }
1229
1230         dip->devbase = vdev_template;
1231         dip->devbase.release = pvr2_video_device_release;
1232         dip->devbase.ioctl_ops = &pvr2_ioctl_ops;
1233         dip->devbase.device_caps = caps;
1234         {
1235                 int val;
1236                 pvr2_ctrl_get_value(
1237                         pvr2_hdw_get_ctrl_by_id(hdw,
1238                                                 PVR2_CID_STDAVAIL), &val);
1239                 dip->devbase.tvnorms = (v4l2_std_id)val;
1240         }
1241
1242         mindevnum = -1;
1243         unit_number = pvr2_hdw_get_unit_number(hdw);
1244         if (nr_ptr && (unit_number >= 0) && (unit_number < PVR_NUM)) {
1245                 mindevnum = nr_ptr[unit_number];
1246         }
1247         pvr2_hdw_set_v4l2_dev(hdw, &dip->devbase);
1248         if ((video_register_device(&dip->devbase,
1249                                    dip->v4l_type, mindevnum) < 0) &&
1250             (video_register_device(&dip->devbase,
1251                                    dip->v4l_type, -1) < 0)) {
1252                 pr_err(KBUILD_MODNAME
1253                         ": Failed to register pvrusb2 v4l device\n");
1254         }
1255
1256         pr_info("pvrusb2: registered device %s [%s]\n",
1257                video_device_node_name(&dip->devbase),
1258                pvr2_config_get_name(dip->config));
1259
1260         pvr2_hdw_v4l_store_minor_number(hdw,
1261                                         dip->minor_type,dip->devbase.minor);
1262 }
1263
1264
1265 struct pvr2_v4l2 *pvr2_v4l2_create(struct pvr2_context *mnp)
1266 {
1267         struct pvr2_v4l2 *vp;
1268
1269         vp = kzalloc(sizeof(*vp),GFP_KERNEL);
1270         if (!vp) return vp;
1271         pvr2_channel_init(&vp->channel,mnp);
1272         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_v4l2 id=%p",vp);
1273
1274         vp->channel.check_func = pvr2_v4l2_internal_check;
1275
1276         /* register streams */
1277         vp->dev_video = kzalloc(sizeof(*vp->dev_video),GFP_KERNEL);
1278         if (!vp->dev_video) goto fail;
1279         pvr2_v4l2_dev_init(vp->dev_video,vp,VFL_TYPE_GRABBER);
1280         if (pvr2_hdw_get_input_available(vp->channel.mc_head->hdw) &
1281             (1 << PVR2_CVAL_INPUT_RADIO)) {
1282                 vp->dev_radio = kzalloc(sizeof(*vp->dev_radio),GFP_KERNEL);
1283                 if (!vp->dev_radio) goto fail;
1284                 pvr2_v4l2_dev_init(vp->dev_radio,vp,VFL_TYPE_RADIO);
1285         }
1286
1287         return vp;
1288  fail:
1289         pvr2_trace(PVR2_TRACE_STRUCT,"Failure creating pvr2_v4l2 id=%p",vp);
1290         pvr2_v4l2_destroy_no_lock(vp);
1291         return NULL;
1292 }