drivers/media/usb/tm6000/tm6000-video.c

   1 /*
   2  *   tm6000-video.c - driver for TM5600/TM6000/TM6010 USB video capture devices
   3  *
   4  *  Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org>
   5  *
   6  *  Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
   7  *      - Fixed module load/unload
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation version 2
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/delay.h>
  21 #include <linux/errno.h>
  22 #include <linux/fs.h>
  23 #include <linux/kernel.h>
  24 #include <linux/slab.h>
  25 #include <linux/mm.h>
  26 #include <linux/ioport.h>
  27 #include <linux/init.h>
  28 #include <linux/sched.h>
  29 #include <linux/random.h>
  30 #include <linux/usb.h>
  31 #include <linux/videodev2.h>
  32 #include <media/v4l2-ioctl.h>
  33 #include <media/v4l2-event.h>
  34 #include <media/tuner.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/kthread.h>
  37 #include <linux/highmem.h>
  38 #include <linux/freezer.h>
  39
  40 #include "tm6000-regs.h"
  41 #include "tm6000.h"
  42
  43 #define BUFFER_TIMEOUT     msecs_to_jiffies(2000)  /* 2 seconds */
  44
  45 /* Limits minimum and default number of buffers */
  46 #define TM6000_MIN_BUF 4
  47 #define TM6000_DEF_BUF 8
  48
  49 #define TM6000_NUM_URB_BUF 8
  50
  51 #define TM6000_MAX_ISO_PACKETS  46      /* Max number of ISO packets */
  52
  53 /* Declare static vars that will be used as parameters */
  54 static unsigned int vid_limit = 16;     /* Video memory limit, in Mb */
  55 static int video_nr = -1;               /* /dev/videoN, -1 for autodetect */
  56 static int radio_nr = -1;               /* /dev/radioN, -1 for autodetect */
  57 static bool keep_urb;                   /* keep urb buffers allocated */
  58
  59 /* Debug level */
  60 int tm6000_debug;
  61 EXPORT_SYMBOL_GPL(tm6000_debug);
  62
  63 static struct tm6000_fmt format[] = {
  64         {
  65                 .name     = "4:2:2, packed, YVY2",
  66                 .fourcc   = V4L2_PIX_FMT_YUYV,
  67                 .depth    = 16,
  68         }, {
  69                 .name     = "4:2:2, packed, UYVY",
  70                 .fourcc   = V4L2_PIX_FMT_UYVY,
  71                 .depth    = 16,
  72         }, {
  73                 .name     = "A/V + VBI mux packet",
  74                 .fourcc   = V4L2_PIX_FMT_TM6000,
  75                 .depth    = 16,
  76         }
  77 };
  78
  79 /* ------------------------------------------------------------------
  80  *      DMA and thread functions
  81  * ------------------------------------------------------------------
  82  */
  83
  84 #define norm_maxw(a) 720
  85 #define norm_maxh(a) 576
  86
  87 #define norm_minw(a) norm_maxw(a)
  88 #define norm_minh(a) norm_maxh(a)
  89
  90 /*
  91  * video-buf generic routine to get the next available buffer
  92  */
  93 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
  94                                struct tm6000_buffer   **buf)
  95 {
  96         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
  97
  98         if (list_empty(&dma_q->active)) {
  99                 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
 100                 *buf = NULL;
 101                 return;
 102         }
 103
 104         *buf = list_entry(dma_q->active.next,
 105                         struct tm6000_buffer, vb.queue);
 106 }
 107
 108 /*
 109  * Announces that a buffer were filled and request the next
 110  */
 111 static inline void buffer_filled(struct tm6000_core *dev,
 112                                  struct tm6000_dmaqueue *dma_q,
 113                                  struct tm6000_buffer *buf)
 114 {
 115         /* Advice that buffer was filled */
 116         dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
 117         buf->vb.state = VIDEOBUF_DONE;
 118         buf->vb.field_count++;
 119         v4l2_get_timestamp(&buf->vb.ts);
 120
 121         list_del(&buf->vb.queue);
 122         wake_up(&buf->vb.done);
 123 }
 124
 125 /*
 126  * Identify the tm5600/6000 buffer header type and properly handles
 127  */
 128 static int copy_streams(u8 *data, unsigned long len,
 129                         struct urb *urb)
 130 {
 131         struct tm6000_dmaqueue  *dma_q = urb->context;
 132         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 133         u8 *ptr = data, *endp = data+len;
 134         unsigned long header = 0;
 135         int rc = 0;
 136         unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
 137         struct tm6000_buffer *vbuf = NULL;
 138         char *voutp = NULL;
 139         unsigned int linewidth;
 140
 141         if (!dev->radio) {
 142                 /* get video buffer */
 143                 get_next_buf(dma_q, &vbuf);
 144
 145                 if (!vbuf)
 146                         return rc;
 147                 voutp = videobuf_to_vmalloc(&vbuf->vb);
 148
 149                 if (!voutp)
 150                         return 0;
 151         }
 152
 153         for (ptr = data; ptr < endp;) {
 154                 if (!dev->isoc_ctl.cmd) {
 155                         /* Header */
 156                         if (dev->isoc_ctl.tmp_buf_len > 0) {
 157                                 /* from last urb or packet */
 158                                 header = dev->isoc_ctl.tmp_buf;
 159                                 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
 160                                         memcpy((u8 *)&header +
 161                                                 dev->isoc_ctl.tmp_buf_len,
 162                                                 ptr,
 163                                                 4 - dev->isoc_ctl.tmp_buf_len);
 164                                         ptr += 4 - dev->isoc_ctl.tmp_buf_len;
 165                                 }
 166                                 dev->isoc_ctl.tmp_buf_len = 0;
 167                         } else {
 168                                 if (ptr + 3 >= endp) {
 169                                         /* have incomplete header */
 170                                         dev->isoc_ctl.tmp_buf_len = endp - ptr;
 171                                         memcpy(&dev->isoc_ctl.tmp_buf, ptr,
 172                                                 dev->isoc_ctl.tmp_buf_len);
 173                                         return rc;
 174                                 }
 175                                 /* Seek for sync */
 176                                 for (; ptr < endp - 3; ptr++) {
 177                                         if (*(ptr + 3) == 0x47)
 178                                                 break;
 179                                 }
 180                                 /* Get message header */
 181                                 header = *(unsigned long *)ptr;
 182                                 ptr += 4;
 183                         }
 184
 185                         /* split the header fields */
 186                         size = ((header & 0x7e) << 1);
 187                         if (size > 0)
 188                                 size -= 4;
 189                         block = (header >> 7) & 0xf;
 190                         field = (header >> 11) & 0x1;
 191                         line  = (header >> 12) & 0x1ff;
 192                         cmd   = (header >> 21) & 0x7;
 193                         /* Validates haeder fields */
 194                         if (size > TM6000_URB_MSG_LEN)
 195                                 size = TM6000_URB_MSG_LEN;
 196                         pktsize = TM6000_URB_MSG_LEN;
 197                         /*
 198                          * calculate position in buffer and change the buffer
 199                          */
 200                         switch (cmd) {
 201                         case TM6000_URB_MSG_VIDEO:
 202                                 if (!dev->radio) {
 203                                         if ((dev->isoc_ctl.vfield != field) &&
 204                                                 (field == 1)) {
 205                                                 /*
 206                                                  * Announces that a new buffer
 207                                                  * were filled
 208                                                  */
 209                                                 buffer_filled(dev, dma_q, vbuf);
 210                                                 dprintk(dev, V4L2_DEBUG_ISOC,
 211                                                         "new buffer filled\n");
 212                                                 get_next_buf(dma_q, &vbuf);
 213                                                 if (!vbuf)
 214                                                         return rc;
 215                                                 voutp = videobuf_to_vmalloc(&vbuf->vb);
 216                                                 if (!voutp)
 217                                                         return rc;
 218                                                 memset(voutp, 0, vbuf->vb.size);
 219                                         }
 220                                         linewidth = vbuf->vb.width << 1;
 221                                         pos = ((line << 1) - field - 1) *
 222                                         linewidth + block * TM6000_URB_MSG_LEN;
 223                                         /* Don't allow to write out of the buffer */
 224                                         if (pos + size > vbuf->vb.size)
 225                                                 cmd = TM6000_URB_MSG_ERR;
 226                                         dev->isoc_ctl.vfield = field;
 227                                 }
 228                                 break;
 229                         case TM6000_URB_MSG_VBI:
 230                                 break;
 231                         case TM6000_URB_MSG_AUDIO:
 232                         case TM6000_URB_MSG_PTS:
 233                                 size = pktsize; /* Size is always 180 bytes */
 234                                 break;
 235                         }
 236                 } else {
 237                         /* Continue the last copy */
 238                         cmd = dev->isoc_ctl.cmd;
 239                         size = dev->isoc_ctl.size;
 240                         pos = dev->isoc_ctl.pos;
 241                         pktsize = dev->isoc_ctl.pktsize;
 242                         field = dev->isoc_ctl.field;
 243                 }
 244                 cpysize = (endp - ptr > size) ? size : endp - ptr;
 245                 if (cpysize) {
 246                         /* copy data in different buffers */
 247                         switch (cmd) {
 248                         case TM6000_URB_MSG_VIDEO:
 249                                 /* Fills video buffer */
 250                                 if (vbuf)
 251                                         memcpy(&voutp[pos], ptr, cpysize);
 252                                 break;
 253                         case TM6000_URB_MSG_AUDIO: {
 254                                 int i;
 255                                 for (i = 0; i < cpysize; i += 2)
 256                                         swab16s((u16 *)(ptr + i));
 257
 258                                 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
 259                                 break;
 260                         }
 261                         case TM6000_URB_MSG_VBI:
 262                                 /* Need some code to copy vbi buffer */
 263                                 break;
 264                         case TM6000_URB_MSG_PTS: {
 265                                 /* Need some code to copy pts */
 266                                 u32 pts;
 267                                 pts = *(u32 *)ptr;
 268                                 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
 269                                         field, pts);
 270                                 break;
 271                         }
 272                         }
 273                 }
 274                 if (ptr + pktsize > endp) {
 275                         /*
 276                          * End of URB packet, but cmd processing is not
 277                          * complete. Preserve the state for a next packet
 278                          */
 279                         dev->isoc_ctl.pos = pos + cpysize;
 280                         dev->isoc_ctl.size = size - cpysize;
 281                         dev->isoc_ctl.cmd = cmd;
 282                         dev->isoc_ctl.field = field;
 283                         dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
 284                         ptr += endp - ptr;
 285                 } else {
 286                         dev->isoc_ctl.cmd = 0;
 287                         ptr += pktsize;
 288                 }
 289         }
 290         return 0;
 291 }
 292
 293 /*
 294  * Identify the tm5600/6000 buffer header type and properly handles
 295  */
 296 static int copy_multiplexed(u8 *ptr, unsigned long len,
 297                         struct urb *urb)
 298 {
 299         struct tm6000_dmaqueue  *dma_q = urb->context;
 300         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 301         unsigned int pos = dev->isoc_ctl.pos, cpysize;
 302         int rc = 1;
 303         struct tm6000_buffer *buf;
 304         char *outp = NULL;
 305
 306         get_next_buf(dma_q, &buf);
 307         if (buf)
 308                 outp = videobuf_to_vmalloc(&buf->vb);
 309
 310         if (!outp)
 311                 return 0;
 312
 313         while (len > 0) {
 314                 cpysize = min(len, buf->vb.size-pos);
 315                 memcpy(&outp[pos], ptr, cpysize);
 316                 pos += cpysize;
 317                 ptr += cpysize;
 318                 len -= cpysize;
 319                 if (pos >= buf->vb.size) {
 320                         pos = 0;
 321                         /* Announces that a new buffer were filled */
 322                         buffer_filled(dev, dma_q, buf);
 323                         dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
 324                         get_next_buf(dma_q, &buf);
 325                         if (!buf)
 326                                 break;
 327                         outp = videobuf_to_vmalloc(&(buf->vb));
 328                         if (!outp)
 329                                 return rc;
 330                         pos = 0;
 331                 }
 332         }
 333
 334         dev->isoc_ctl.pos = pos;
 335         return rc;
 336 }
 337
 338 static inline void print_err_status(struct tm6000_core *dev,
 339                                      int packet, int status)
 340 {
 341         char *errmsg = "Unknown";
 342
 343         switch (status) {
 344         case -ENOENT:
 345                 errmsg = "unlinked synchronously";
 346                 break;
 347         case -ECONNRESET:
 348                 errmsg = "unlinked asynchronously";
 349                 break;
 350         case -ENOSR:
 351                 errmsg = "Buffer error (overrun)";
 352                 break;
 353         case -EPIPE:
 354                 errmsg = "Stalled (device not responding)";
 355                 break;
 356         case -EOVERFLOW:
 357                 errmsg = "Babble (bad cable?)";
 358                 break;
 359         case -EPROTO:
 360                 errmsg = "Bit-stuff error (bad cable?)";
 361                 break;
 362         case -EILSEQ:
 363                 errmsg = "CRC/Timeout (could be anything)";
 364                 break;
 365         case -ETIME:
 366                 errmsg = "Device does not respond";
 367                 break;
 368         }
 369         if (packet < 0) {
 370                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
 371                         status, errmsg);
 372         } else {
 373                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
 374                         packet, status, errmsg);
 375         }
 376 }
 377
 378
 379 /*
 380  * Controls the isoc copy of each urb packet
 381  */
 382 static inline int tm6000_isoc_copy(struct urb *urb)
 383 {
 384         struct tm6000_dmaqueue  *dma_q = urb->context;
 385         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 386         int i, len = 0, rc = 1, status;
 387         char *p;
 388
 389         if (urb->status < 0) {
 390                 print_err_status(dev, -1, urb->status);
 391                 return 0;
 392         }
 393
 394         for (i = 0; i < urb->number_of_packets; i++) {
 395                 status = urb->iso_frame_desc[i].status;
 396
 397                 if (status < 0) {
 398                         print_err_status(dev, i, status);
 399                         continue;
 400                 }
 401
 402                 len = urb->iso_frame_desc[i].actual_length;
 403
 404                 if (len > 0) {
 405                         p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 406                         if (!urb->iso_frame_desc[i].status) {
 407                                 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
 408                                         rc = copy_multiplexed(p, len, urb);
 409                                         if (rc <= 0)
 410                                                 return rc;
 411                                 } else {
 412                                         copy_streams(p, len, urb);
 413                                 }
 414                         }
 415                 }
 416         }
 417         return rc;
 418 }
 419
 420 /* ------------------------------------------------------------------
 421  *      URB control
 422  * ------------------------------------------------------------------
 423  */
 424
 425 /*
 426  * IRQ callback, called by URB callback
 427  */
 428 static void tm6000_irq_callback(struct urb *urb)
 429 {
 430         struct tm6000_dmaqueue  *dma_q = urb->context;
 431         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 432         int i;
 433
 434         switch (urb->status) {
 435         case 0:
 436         case -ETIMEDOUT:
 437                 break;
 438
 439         case -ECONNRESET:
 440         case -ENOENT:
 441         case -ESHUTDOWN:
 442                 return;
 443
 444         default:
 445                 tm6000_err("urb completion error %d.\n", urb->status);
 446                 break;
 447         }
 448
 449         spin_lock(&dev->slock);
 450         tm6000_isoc_copy(urb);
 451         spin_unlock(&dev->slock);
 452
 453         /* Reset urb buffers */
 454         for (i = 0; i < urb->number_of_packets; i++) {
 455                 urb->iso_frame_desc[i].status = 0;
 456                 urb->iso_frame_desc[i].actual_length = 0;
 457         }
 458
 459         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 460         if (urb->status)
 461                 tm6000_err("urb resubmit failed (error=%i)\n",
 462                         urb->status);
 463 }
 464
 465 /*
 466  * Allocate URB buffers
 467  */
 468 static int tm6000_alloc_urb_buffers(struct tm6000_core *dev)
 469 {
 470         int num_bufs = TM6000_NUM_URB_BUF;
 471         int i;
 472
 473         if (dev->urb_buffer)
 474                 return 0;
 475
 476         dev->urb_buffer = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 477         if (!dev->urb_buffer)
 478                 return -ENOMEM;
 479
 480         dev->urb_dma = kmalloc(sizeof(dma_addr_t *)*num_bufs, GFP_KERNEL);
 481         if (!dev->urb_dma)
 482                 return -ENOMEM;
 483
 484         for (i = 0; i < num_bufs; i++) {
 485                 dev->urb_buffer[i] = usb_alloc_coherent(
 486                                         dev->udev, dev->urb_size,
 487                                         GFP_KERNEL, &dev->urb_dma[i]);
 488                 if (!dev->urb_buffer[i]) {
 489                         tm6000_err("unable to allocate %i bytes for transfer buffer %i\n",
 490                                     dev->urb_size, i);
 491                         return -ENOMEM;
 492                 }
 493                 memset(dev->urb_buffer[i], 0, dev->urb_size);
 494         }
 495
 496         return 0;
 497 }
 498
 499 /*
 500  * Free URB buffers
 501  */
 502 static int tm6000_free_urb_buffers(struct tm6000_core *dev)
 503 {
 504         int i;
 505
 506         if (!dev->urb_buffer)
 507                 return 0;
 508
 509         for (i = 0; i < TM6000_NUM_URB_BUF; i++) {
 510                 if (dev->urb_buffer[i]) {
 511                         usb_free_coherent(dev->udev,
 512                                         dev->urb_size,
 513                                         dev->urb_buffer[i],
 514                                         dev->urb_dma[i]);
 515                         dev->urb_buffer[i] = NULL;
 516                 }
 517         }
 518         kfree(dev->urb_buffer);
 519         kfree(dev->urb_dma);
 520         dev->urb_buffer = NULL;
 521         dev->urb_dma = NULL;
 522
 523         return 0;
 524 }
 525
 526 /*
 527  * Stop and Deallocate URBs
 528  */
 529 static void tm6000_uninit_isoc(struct tm6000_core *dev)
 530 {
 531         struct urb *urb;
 532         int i;
 533
 534         dev->isoc_ctl.buf = NULL;
 535         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 536                 urb = dev->isoc_ctl.urb[i];
 537                 if (urb) {
 538                         usb_kill_urb(urb);
 539                         usb_unlink_urb(urb);
 540                         usb_free_urb(urb);
 541                         dev->isoc_ctl.urb[i] = NULL;
 542                 }
 543                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 544         }
 545
 546         if (!keep_urb)
 547                 tm6000_free_urb_buffers(dev);
 548
 549         kfree(dev->isoc_ctl.urb);
 550         kfree(dev->isoc_ctl.transfer_buffer);
 551
 552         dev->isoc_ctl.urb = NULL;
 553         dev->isoc_ctl.transfer_buffer = NULL;
 554         dev->isoc_ctl.num_bufs = 0;
 555 }
 556
 557 /*
 558  * Assign URBs and start IRQ
 559  */
 560 static int tm6000_prepare_isoc(struct tm6000_core *dev)
 561 {
 562         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 563         int i, j, sb_size, pipe, size, max_packets;
 564         int num_bufs = TM6000_NUM_URB_BUF;
 565         struct urb *urb;
 566
 567         /* De-allocates all pending stuff */
 568         tm6000_uninit_isoc(dev);
 569         /* Stop interrupt USB pipe */
 570         tm6000_ir_int_stop(dev);
 571
 572         usb_set_interface(dev->udev,
 573                           dev->isoc_in.bInterfaceNumber,
 574                           dev->isoc_in.bAlternateSetting);
 575
 576         /* Start interrupt USB pipe */
 577         tm6000_ir_int_start(dev);
 578
 579         pipe = usb_rcvisocpipe(dev->udev,
 580                                dev->isoc_in.endp->desc.bEndpointAddress &
 581                                USB_ENDPOINT_NUMBER_MASK);
 582
 583         size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
 584
 585         if (size > dev->isoc_in.maxsize)
 586                 size = dev->isoc_in.maxsize;
 587
 588         dev->isoc_ctl.max_pkt_size = size;
 589
 590         max_packets = TM6000_MAX_ISO_PACKETS;
 591         sb_size = max_packets * size;
 592         dev->urb_size = sb_size;
 593
 594         dev->isoc_ctl.num_bufs = num_bufs;
 595
 596         dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 597         if (!dev->isoc_ctl.urb)
 598                 return -ENOMEM;
 599
 600         dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
 601                                    GFP_KERNEL);
 602         if (!dev->isoc_ctl.transfer_buffer) {
 603                 kfree(dev->isoc_ctl.urb);
 604                 return -ENOMEM;
 605         }
 606
 607         dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets (%d bytes) of %d bytes each to handle %u size\n",
 608                     max_packets, num_bufs, sb_size,
 609                     dev->isoc_in.maxsize, size);
 610
 611
 612         if (tm6000_alloc_urb_buffers(dev) < 0) {
 613                 tm6000_err("cannot allocate memory for urb buffers\n");
 614
 615                 /* call free, as some buffers might have been allocated */
 616                 tm6000_free_urb_buffers(dev);
 617                 kfree(dev->isoc_ctl.urb);
 618                 kfree(dev->isoc_ctl.transfer_buffer);
 619                 return -ENOMEM;
 620         }
 621
 622         /* allocate urbs and transfer buffers */
 623         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 624                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 625                 if (!urb) {
 626                         tm6000_uninit_isoc(dev);
 627                         tm6000_free_urb_buffers(dev);
 628                         return -ENOMEM;
 629                 }
 630                 dev->isoc_ctl.urb[i] = urb;
 631
 632                 urb->transfer_dma = dev->urb_dma[i];
 633                 dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i];
 634
 635                 usb_fill_bulk_urb(urb, dev->udev, pipe,
 636                                   dev->isoc_ctl.transfer_buffer[i], sb_size,
 637                                   tm6000_irq_callback, dma_q);
 638                 urb->interval = dev->isoc_in.endp->desc.bInterval;
 639                 urb->number_of_packets = max_packets;
 640                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 641
 642                 for (j = 0; j < max_packets; j++) {
 643                         urb->iso_frame_desc[j].offset = size * j;
 644                         urb->iso_frame_desc[j].length = size;
 645                 }
 646         }
 647
 648         return 0;
 649 }
 650
 651 static int tm6000_start_thread(struct tm6000_core *dev)
 652 {
 653         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 654         int i;
 655
 656         dma_q->frame = 0;
 657         dma_q->ini_jiffies = jiffies;
 658
 659         init_waitqueue_head(&dma_q->wq);
 660
 661         /* submit urbs and enables IRQ */
 662         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 663                 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 664                 if (rc) {
 665                         tm6000_err("submit of urb %i failed (error=%i)\n", i,
 666                                    rc);
 667                         tm6000_uninit_isoc(dev);
 668                         return rc;
 669                 }
 670         }
 671
 672         return 0;
 673 }
 674
 675 /* ------------------------------------------------------------------
 676  *      Videobuf operations
 677  * ------------------------------------------------------------------
 678  */
 679
 680 static int
 681 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 682 {
 683         struct tm6000_fh *fh = vq->priv_data;
 684
 685         *size = fh->fmt->depth * fh->width * fh->height >> 3;
 686         if (0 == *count)
 687                 *count = TM6000_DEF_BUF;
 688
 689         if (*count < TM6000_MIN_BUF)
 690                 *count = TM6000_MIN_BUF;
 691
 692         while (*size * *count > vid_limit * 1024 * 1024)
 693                 (*count)--;
 694
 695         return 0;
 696 }
 697
 698 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
 699 {
 700         struct tm6000_fh *fh = vq->priv_data;
 701         struct tm6000_core   *dev = fh->dev;
 702         unsigned long flags;
 703
 704         BUG_ON(in_interrupt());
 705
 706         /* We used to wait for the buffer to finish here, but this didn't work
 707            because, as we were keeping the state as VIDEOBUF_QUEUED,
 708            videobuf_queue_cancel marked it as finished for us.
 709            (Also, it could wedge forever if the hardware was misconfigured.)
 710
 711            This should be safe; by the time we get here, the buffer isn't
 712            queued anymore. If we ever start marking the buffers as
 713            VIDEOBUF_ACTIVE, it won't be, though.
 714         */
 715         spin_lock_irqsave(&dev->slock, flags);
 716         if (dev->isoc_ctl.buf == buf)
 717                 dev->isoc_ctl.buf = NULL;
 718         spin_unlock_irqrestore(&dev->slock, flags);
 719
 720         videobuf_vmalloc_free(&buf->vb);
 721         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 722 }
 723
 724 static int
 725 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 726                                                 enum v4l2_field field)
 727 {
 728         struct tm6000_fh     *fh  = vq->priv_data;
 729         struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
 730         struct tm6000_core   *dev = fh->dev;
 731         int rc = 0;
 732
 733         BUG_ON(NULL == fh->fmt);
 734
 735
 736         /* FIXME: It assumes depth=2 */
 737         /* The only currently supported format is 16 bits/pixel */
 738         buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
 739         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 740                 return -EINVAL;
 741
 742         if (buf->fmt       != fh->fmt    ||
 743             buf->vb.width  != fh->width  ||
 744             buf->vb.height != fh->height ||
 745             buf->vb.field  != field) {
 746                 buf->fmt       = fh->fmt;
 747                 buf->vb.width  = fh->width;
 748                 buf->vb.height = fh->height;
 749                 buf->vb.field  = field;
 750                 buf->vb.state = VIDEOBUF_NEEDS_INIT;
 751         }
 752
 753         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 754                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 755                 if (rc != 0)
 756                         goto fail;
 757         }
 758
 759         if (!dev->isoc_ctl.num_bufs) {
 760                 rc = tm6000_prepare_isoc(dev);
 761                 if (rc < 0)
 762                         goto fail;
 763
 764                 rc = tm6000_start_thread(dev);
 765                 if (rc < 0)
 766                         goto fail;
 767
 768         }
 769
 770         buf->vb.state = VIDEOBUF_PREPARED;
 771         return 0;
 772
 773 fail:
 774         free_buffer(vq, buf);
 775         return rc;
 776 }
 777
 778 static void
 779 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 780 {
 781         struct tm6000_buffer    *buf     = container_of(vb, struct tm6000_buffer, vb);
 782         struct tm6000_fh        *fh      = vq->priv_data;
 783         struct tm6000_core      *dev     = fh->dev;
 784         struct tm6000_dmaqueue  *vidq    = &dev->vidq;
 785
 786         buf->vb.state = VIDEOBUF_QUEUED;
 787         list_add_tail(&buf->vb.queue, &vidq->active);
 788 }
 789
 790 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 791 {
 792         struct tm6000_buffer   *buf  = container_of(vb, struct tm6000_buffer, vb);
 793
 794         free_buffer(vq, buf);
 795 }
 796
 797 static const struct videobuf_queue_ops tm6000_video_qops = {
 798         .buf_setup      = buffer_setup,
 799         .buf_prepare    = buffer_prepare,
 800         .buf_queue      = buffer_queue,
 801         .buf_release    = buffer_release,
 802 };
 803
 804 /* ------------------------------------------------------------------
 805  *      IOCTL handling
 806  * ------------------------------------------------------------------
 807  */
 808
 809 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
 810 {
 811         /* Is the current fh handling it? if so, that's OK */
 812         if (dev->resources == fh && dev->is_res_read)
 813                 return true;
 814
 815         return false;
 816 }
 817
 818 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
 819 {
 820         /* Is the current fh handling it? if so, that's OK */
 821         if (dev->resources == fh)
 822                 return true;
 823
 824         return false;
 825 }
 826
 827 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
 828                    bool is_res_read)
 829 {
 830         /* Is the current fh handling it? if so, that's OK */
 831         if (dev->resources == fh && dev->is_res_read == is_res_read)
 832                 return true;
 833
 834         /* is it free? */
 835         if (dev->resources)
 836                 return false;
 837
 838         /* grab it */
 839         dev->resources = fh;
 840         dev->is_res_read = is_res_read;
 841         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
 842         return true;
 843 }
 844
 845 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
 846 {
 847         /* Is the current fh handling it? if so, that's OK */
 848         if (dev->resources != fh)
 849                 return;
 850
 851         dev->resources = NULL;
 852         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
 853 }
 854
 855 /* ------------------------------------------------------------------
 856  *      IOCTL vidioc handling
 857  * ------------------------------------------------------------------
 858  */
 859 static int vidioc_querycap(struct file *file, void  *priv,
 860                                         struct v4l2_capability *cap)
 861 {
 862         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 863         struct video_device *vdev = video_devdata(file);
 864
 865         strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
 866         strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
 867         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
 868         if (dev->tuner_type != TUNER_ABSENT)
 869                 cap->device_caps |= V4L2_CAP_TUNER;
 870         if (vdev->vfl_type == VFL_TYPE_GRABBER)
 871                 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
 872                                 V4L2_CAP_STREAMING |
 873                                 V4L2_CAP_READWRITE;
 874         else
 875                 cap->device_caps |= V4L2_CAP_RADIO;
 876         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
 877                 V4L2_CAP_RADIO | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
 878
 879         return 0;
 880 }
 881
 882 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 883                                         struct v4l2_fmtdesc *f)
 884 {
 885         if (f->index >= ARRAY_SIZE(format))
 886                 return -EINVAL;
 887
 888         strlcpy(f->description, format[f->index].name, sizeof(f->description));
 889         f->pixelformat = format[f->index].fourcc;
 890         return 0;
 891 }
 892
 893 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 894                                         struct v4l2_format *f)
 895 {
 896         struct tm6000_fh  *fh = priv;
 897
 898         f->fmt.pix.width        = fh->width;
 899         f->fmt.pix.height       = fh->height;
 900         f->fmt.pix.field        = fh->vb_vidq.field;
 901         f->fmt.pix.pixelformat  = fh->fmt->fourcc;
 902         f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
 903         f->fmt.pix.bytesperline =
 904                 (f->fmt.pix.width * fh->fmt->depth) >> 3;
 905         f->fmt.pix.sizeimage =
 906                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 907
 908         return 0;
 909 }
 910
 911 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
 912 {
 913         unsigned int i;
 914
 915         for (i = 0; i < ARRAY_SIZE(format); i++)
 916                 if (format[i].fourcc == fourcc)
 917                         return format+i;
 918         return NULL;
 919 }
 920
 921 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 922                         struct v4l2_format *f)
 923 {
 924         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 925         struct tm6000_fmt *fmt;
 926         enum v4l2_field field;
 927
 928         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 929         if (NULL == fmt) {
 930                 dprintk(dev, 2, "Fourcc format (0x%08x) invalid.\n",
 931                         f->fmt.pix.pixelformat);
 932                 return -EINVAL;
 933         }
 934
 935         field = f->fmt.pix.field;
 936
 937         field = V4L2_FIELD_INTERLACED;
 938
 939         tm6000_get_std_res(dev);
 940
 941         f->fmt.pix.width  = dev->width;
 942         f->fmt.pix.height = dev->height;
 943
 944         f->fmt.pix.width &= ~0x01;
 945
 946         f->fmt.pix.field = field;
 947
 948         f->fmt.pix.bytesperline =
 949                 (f->fmt.pix.width * fmt->depth) >> 3;
 950         f->fmt.pix.sizeimage =
 951                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 952         f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
 953
 954         return 0;
 955 }
 956
 957 /*FIXME: This seems to be generic enough to be at videodev2 */
 958 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 959                                         struct v4l2_format *f)
 960 {
 961         struct tm6000_fh  *fh = priv;
 962         struct tm6000_core *dev = fh->dev;
 963         int ret = vidioc_try_fmt_vid_cap(file, fh, f);
 964         if (ret < 0)
 965                 return ret;
 966
 967         fh->fmt           = format_by_fourcc(f->fmt.pix.pixelformat);
 968         fh->width         = f->fmt.pix.width;
 969         fh->height        = f->fmt.pix.height;
 970         fh->vb_vidq.field = f->fmt.pix.field;
 971         fh->type          = f->type;
 972
 973         dev->fourcc       = f->fmt.pix.pixelformat;
 974
 975         tm6000_set_fourcc_format(dev);
 976
 977         return 0;
 978 }
 979
 980 static int vidioc_reqbufs(struct file *file, void *priv,
 981                            struct v4l2_requestbuffers *p)
 982 {
 983         struct tm6000_fh  *fh = priv;
 984
 985         return videobuf_reqbufs(&fh->vb_vidq, p);
 986 }
 987
 988 static int vidioc_querybuf(struct file *file, void *priv,
 989                             struct v4l2_buffer *p)
 990 {
 991         struct tm6000_fh  *fh = priv;
 992
 993         return videobuf_querybuf(&fh->vb_vidq, p);
 994 }
 995
 996 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
 997 {
 998         struct tm6000_fh  *fh = priv;
 999
1000         return videobuf_qbuf(&fh->vb_vidq, p);
1001 }
1002
1003 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1004 {
1005         struct tm6000_fh  *fh = priv;
1006
1007         return videobuf_dqbuf(&fh->vb_vidq, p,
1008                                 file->f_flags & O_NONBLOCK);
1009 }
1010
1011 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1012 {
1013         struct tm6000_fh *fh = priv;
1014         struct tm6000_core *dev = fh->dev;
1015
1016         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1017                 return -EINVAL;
1018         if (i != fh->type)
1019                 return -EINVAL;
1020
1021         if (!res_get(dev, fh, false))
1022                 return -EBUSY;
1023         return videobuf_streamon(&fh->vb_vidq);
1024 }
1025
1026 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1027 {
1028         struct tm6000_fh *fh = priv;
1029         struct tm6000_core *dev = fh->dev;
1030
1031         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1032                 return -EINVAL;
1033
1034         if (i != fh->type)
1035                 return -EINVAL;
1036
1037         videobuf_streamoff(&fh->vb_vidq);
1038         res_free(dev, fh);
1039
1040         return 0;
1041 }
1042
1043 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1044 {
1045         int rc = 0;
1046         struct tm6000_fh *fh = priv;
1047         struct tm6000_core *dev = fh->dev;
1048
1049         dev->norm = norm;
1050         rc = tm6000_init_analog_mode(dev);
1051
1052         fh->width  = dev->width;
1053         fh->height = dev->height;
1054
1055         if (rc < 0)
1056                 return rc;
1057
1058         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->norm);
1059
1060         return 0;
1061 }
1062
1063 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1064 {
1065         struct tm6000_fh *fh = priv;
1066         struct tm6000_core *dev = fh->dev;
1067
1068         *norm = dev->norm;
1069         return 0;
1070 }
1071
1072 static const char *iname[] = {
1073         [TM6000_INPUT_TV] = "Television",
1074         [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1075         [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1076         [TM6000_INPUT_SVIDEO] = "S-Video",
1077 };
1078
1079 static int vidioc_enum_input(struct file *file, void *priv,
1080                                 struct v4l2_input *i)
1081 {
1082         struct tm6000_fh   *fh = priv;
1083         struct tm6000_core *dev = fh->dev;
1084         unsigned int n;
1085
1086         n = i->index;
1087         if (n >= 3)
1088                 return -EINVAL;
1089
1090         if (!dev->vinput[n].type)
1091                 return -EINVAL;
1092
1093         i->index = n;
1094
1095         if (dev->vinput[n].type == TM6000_INPUT_TV)
1096                 i->type = V4L2_INPUT_TYPE_TUNER;
1097         else
1098                 i->type = V4L2_INPUT_TYPE_CAMERA;
1099
1100         strcpy(i->name, iname[dev->vinput[n].type]);
1101
1102         i->std = TM6000_STD;
1103
1104         return 0;
1105 }
1106
1107 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1108 {
1109         struct tm6000_fh   *fh = priv;
1110         struct tm6000_core *dev = fh->dev;
1111
1112         *i = dev->input;
1113
1114         return 0;
1115 }
1116
1117 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1118 {
1119         struct tm6000_fh   *fh = priv;
1120         struct tm6000_core *dev = fh->dev;
1121         int rc = 0;
1122
1123         if (i >= 3)
1124                 return -EINVAL;
1125         if (!dev->vinput[i].type)
1126                 return -EINVAL;
1127
1128         dev->input = i;
1129
1130         rc = vidioc_s_std(file, priv, dev->norm);
1131
1132         return rc;
1133 }
1134
1135 /* --- controls ---------------------------------------------- */
1136
1137 static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
1138 {
1139         struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
1140         u8  val = ctrl->val;
1141
1142         switch (ctrl->id) {
1143         case V4L2_CID_CONTRAST:
1144                 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1145                 return 0;
1146         case V4L2_CID_BRIGHTNESS:
1147                 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1148                 return 0;
1149         case V4L2_CID_SATURATION:
1150                 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1151                 return 0;
1152         case V4L2_CID_HUE:
1153                 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1154                 return 0;
1155         }
1156         return -EINVAL;
1157 }
1158
1159 static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
1160         .s_ctrl = tm6000_s_ctrl,
1161 };
1162
1163 static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
1164 {
1165         struct tm6000_core *dev = container_of(ctrl->handler,
1166                         struct tm6000_core, radio_ctrl_handler);
1167         u8  val = ctrl->val;
1168
1169         switch (ctrl->id) {
1170         case V4L2_CID_AUDIO_MUTE:
1171                 dev->ctl_mute = val;
1172                 tm6000_tvaudio_set_mute(dev, val);
1173                 return 0;
1174         case V4L2_CID_AUDIO_VOLUME:
1175                 dev->ctl_volume = val;
1176                 tm6000_set_volume(dev, val);
1177                 return 0;
1178         }
1179         return -EINVAL;
1180 }
1181
1182 static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
1183         .s_ctrl = tm6000_radio_s_ctrl,
1184 };
1185
1186 static int vidioc_g_tuner(struct file *file, void *priv,
1187                                 struct v4l2_tuner *t)
1188 {
1189         struct tm6000_fh   *fh  = priv;
1190         struct tm6000_core *dev = fh->dev;
1191
1192         if (UNSET == dev->tuner_type)
1193                 return -ENOTTY;
1194         if (0 != t->index)
1195                 return -EINVAL;
1196
1197         strcpy(t->name, "Television");
1198         t->type       = V4L2_TUNER_ANALOG_TV;
1199         t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
1200         t->rangehigh  = 0xffffffffUL;
1201         t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1202
1203         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1204
1205         t->audmode = dev->amode;
1206
1207         return 0;
1208 }
1209
1210 static int vidioc_s_tuner(struct file *file, void *priv,
1211                                 const struct v4l2_tuner *t)
1212 {
1213         struct tm6000_fh   *fh  = priv;
1214         struct tm6000_core *dev = fh->dev;
1215
1216         if (UNSET == dev->tuner_type)
1217                 return -ENOTTY;
1218         if (0 != t->index)
1219                 return -EINVAL;
1220
1221         if (t->audmode > V4L2_TUNER_MODE_STEREO)
1222                 dev->amode = V4L2_TUNER_MODE_STEREO;
1223         else
1224                 dev->amode = t->audmode;
1225         dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1226
1227         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1228
1229         return 0;
1230 }
1231
1232 static int vidioc_g_frequency(struct file *file, void *priv,
1233                                 struct v4l2_frequency *f)
1234 {
1235         struct tm6000_fh   *fh  = priv;
1236         struct tm6000_core *dev = fh->dev;
1237
1238         if (UNSET == dev->tuner_type)
1239                 return -ENOTTY;
1240         if (f->tuner)
1241                 return -EINVAL;
1242
1243         f->frequency = dev->freq;
1244
1245         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1246
1247         return 0;
1248 }
1249
1250 static int vidioc_s_frequency(struct file *file, void *priv,
1251                                 const struct v4l2_frequency *f)
1252 {
1253         struct tm6000_fh   *fh  = priv;
1254         struct tm6000_core *dev = fh->dev;
1255
1256         if (UNSET == dev->tuner_type)
1257                 return -ENOTTY;
1258         if (f->tuner != 0)
1259                 return -EINVAL;
1260
1261         dev->freq = f->frequency;
1262         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1263
1264         return 0;
1265 }
1266
1267 static int radio_g_tuner(struct file *file, void *priv,
1268                                         struct v4l2_tuner *t)
1269 {
1270         struct tm6000_fh *fh = file->private_data;
1271         struct tm6000_core *dev = fh->dev;
1272
1273         if (0 != t->index)
1274                 return -EINVAL;
1275
1276         memset(t, 0, sizeof(*t));
1277         strcpy(t->name, "Radio");
1278         t->type = V4L2_TUNER_RADIO;
1279         t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
1280         t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1281         t->audmode = V4L2_TUNER_MODE_STEREO;
1282
1283         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1284
1285         return 0;
1286 }
1287
1288 static int radio_s_tuner(struct file *file, void *priv,
1289                                         const struct v4l2_tuner *t)
1290 {
1291         struct tm6000_fh *fh = file->private_data;
1292         struct tm6000_core *dev = fh->dev;
1293
1294         if (0 != t->index)
1295                 return -EINVAL;
1296         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1297         return 0;
1298 }
1299
1300 /* ------------------------------------------------------------------
1301         File operations for the device
1302    ------------------------------------------------------------------*/
1303
1304 static int __tm6000_open(struct file *file)
1305 {
1306         struct video_device *vdev = video_devdata(file);
1307         struct tm6000_core *dev = video_drvdata(file);
1308         struct tm6000_fh *fh;
1309         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1310         int rc;
1311         int radio = 0;
1312
1313         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1314                 video_device_node_name(vdev));
1315
1316         switch (vdev->vfl_type) {
1317         case VFL_TYPE_GRABBER:
1318                 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1319                 break;
1320         case VFL_TYPE_VBI:
1321                 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1322                 break;
1323         case VFL_TYPE_RADIO:
1324                 radio = 1;
1325                 break;
1326         }
1327
1328         /* If more than one user, mutex should be added */
1329         dev->users++;
1330
1331         dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1332                 video_device_node_name(vdev), v4l2_type_names[type],
1333                 dev->users);
1334
1335         /* allocate + initialize per filehandle data */
1336         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1337         if (NULL == fh) {
1338                 dev->users--;
1339                 return -ENOMEM;
1340         }
1341
1342         v4l2_fh_init(&fh->fh, vdev);
1343         file->private_data = fh;
1344         fh->dev      = dev;
1345         fh->radio    = radio;
1346         dev->radio   = radio;
1347         fh->type     = type;
1348         dev->fourcc  = format[0].fourcc;
1349
1350         fh->fmt      = format_by_fourcc(dev->fourcc);
1351
1352         tm6000_get_std_res(dev);
1353
1354         fh->width = dev->width;
1355         fh->height = dev->height;
1356
1357         dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n",
1358                         (unsigned long)fh, (unsigned long)dev,
1359                         (unsigned long)&dev->vidq);
1360         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty queued=%d\n",
1361                 list_empty(&dev->vidq.queued));
1362         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty active=%d\n",
1363                 list_empty(&dev->vidq.active));
1364
1365         /* initialize hardware on analog mode */
1366         rc = tm6000_init_analog_mode(dev);
1367         if (rc < 0) {
1368                 v4l2_fh_exit(&fh->fh);
1369                 kfree(fh);
1370                 return rc;
1371         }
1372
1373         dev->mode = TM6000_MODE_ANALOG;
1374
1375         if (!fh->radio) {
1376                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1377                                 NULL, &dev->slock,
1378                                 fh->type,
1379                                 V4L2_FIELD_INTERLACED,
1380                                 sizeof(struct tm6000_buffer), fh, &dev->lock);
1381         } else {
1382                 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1383                 tm6000_set_audio_rinput(dev);
1384                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1385                 tm6000_prepare_isoc(dev);
1386                 tm6000_start_thread(dev);
1387         }
1388         v4l2_fh_add(&fh->fh);
1389
1390         return 0;
1391 }
1392
1393 static int tm6000_open(struct file *file)
1394 {
1395         struct video_device *vdev = video_devdata(file);
1396         int res;
1397
1398         mutex_lock(vdev->lock);
1399         res = __tm6000_open(file);
1400         mutex_unlock(vdev->lock);
1401         return res;
1402 }
1403
1404 static ssize_t
1405 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1406 {
1407         struct tm6000_fh *fh = file->private_data;
1408         struct tm6000_core *dev = fh->dev;
1409
1410         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1411                 int res;
1412
1413                 if (!res_get(fh->dev, fh, true))
1414                         return -EBUSY;
1415
1416                 if (mutex_lock_interruptible(&dev->lock))
1417                         return -ERESTARTSYS;
1418                 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1419                                         file->f_flags & O_NONBLOCK);
1420                 mutex_unlock(&dev->lock);
1421                 return res;
1422         }
1423         return 0;
1424 }
1425
1426 static unsigned int
1427 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1428 {
1429         unsigned long req_events = poll_requested_events(wait);
1430         struct tm6000_fh        *fh = file->private_data;
1431         struct tm6000_buffer    *buf;
1432         int res = 0;
1433
1434         if (v4l2_event_pending(&fh->fh))
1435                 res = POLLPRI;
1436         else if (req_events & POLLPRI)
1437                 poll_wait(file, &fh->fh.wait, wait);
1438         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1439                 return res | POLLERR;
1440
1441         if (!!is_res_streaming(fh->dev, fh))
1442                 return res | POLLERR;
1443
1444         if (!is_res_read(fh->dev, fh)) {
1445                 /* streaming capture */
1446                 if (list_empty(&fh->vb_vidq.stream))
1447                         return res | POLLERR;
1448                 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1449                 poll_wait(file, &buf->vb.done, wait);
1450                 if (buf->vb.state == VIDEOBUF_DONE ||
1451                     buf->vb.state == VIDEOBUF_ERROR)
1452                         return res | POLLIN | POLLRDNORM;
1453         } else if (req_events & (POLLIN | POLLRDNORM)) {
1454                 /* read() capture */
1455                 return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
1456         }
1457         return res;
1458 }
1459
1460 static unsigned int tm6000_poll(struct file *file, struct poll_table_struct *wait)
1461 {
1462         struct tm6000_fh *fh = file->private_data;
1463         struct tm6000_core *dev = fh->dev;
1464         unsigned int res;
1465
1466         mutex_lock(&dev->lock);
1467         res = __tm6000_poll(file, wait);
1468         mutex_unlock(&dev->lock);
1469         return res;
1470 }
1471
1472 static int tm6000_release(struct file *file)
1473 {
1474         struct tm6000_fh         *fh = file->private_data;
1475         struct tm6000_core      *dev = fh->dev;
1476         struct video_device    *vdev = video_devdata(file);
1477
1478         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1479                 video_device_node_name(vdev), dev->users);
1480
1481         mutex_lock(&dev->lock);
1482         dev->users--;
1483
1484         res_free(dev, fh);
1485
1486         if (!dev->users) {
1487                 tm6000_uninit_isoc(dev);
1488
1489                 /* Stop interrupt USB pipe */
1490                 tm6000_ir_int_stop(dev);
1491
1492                 usb_reset_configuration(dev->udev);
1493
1494                 if (dev->int_in.endp)
1495                         usb_set_interface(dev->udev,
1496                                         dev->isoc_in.bInterfaceNumber, 2);
1497                 else
1498                         usb_set_interface(dev->udev,
1499                                         dev->isoc_in.bInterfaceNumber, 0);
1500
1501                 /* Start interrupt USB pipe */
1502                 tm6000_ir_int_start(dev);
1503
1504                 if (!fh->radio)
1505                         videobuf_mmap_free(&fh->vb_vidq);
1506         }
1507         v4l2_fh_del(&fh->fh);
1508         v4l2_fh_exit(&fh->fh);
1509         kfree(fh);
1510         mutex_unlock(&dev->lock);
1511
1512         return 0;
1513 }
1514
1515 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1516 {
1517         struct tm6000_fh *fh = file->private_data;
1518         struct tm6000_core *dev = fh->dev;
1519         int res;
1520
1521         if (mutex_lock_interruptible(&dev->lock))
1522                 return -ERESTARTSYS;
1523         res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1524         mutex_unlock(&dev->lock);
1525         return res;
1526 }
1527
1528 static const struct v4l2_file_operations tm6000_fops = {
1529         .owner = THIS_MODULE,
1530         .open = tm6000_open,
1531         .release = tm6000_release,
1532         .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1533         .read = tm6000_read,
1534         .poll = tm6000_poll,
1535         .mmap = tm6000_mmap,
1536 };
1537
1538 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1539         .vidioc_querycap          = vidioc_querycap,
1540         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1541         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1542         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1543         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1544         .vidioc_s_std             = vidioc_s_std,
1545         .vidioc_g_std             = vidioc_g_std,
1546         .vidioc_enum_input        = vidioc_enum_input,
1547         .vidioc_g_input           = vidioc_g_input,
1548         .vidioc_s_input           = vidioc_s_input,
1549         .vidioc_g_tuner           = vidioc_g_tuner,
1550         .vidioc_s_tuner           = vidioc_s_tuner,
1551         .vidioc_g_frequency       = vidioc_g_frequency,
1552         .vidioc_s_frequency       = vidioc_s_frequency,
1553         .vidioc_streamon          = vidioc_streamon,
1554         .vidioc_streamoff         = vidioc_streamoff,
1555         .vidioc_reqbufs           = vidioc_reqbufs,
1556         .vidioc_querybuf          = vidioc_querybuf,
1557         .vidioc_qbuf              = vidioc_qbuf,
1558         .vidioc_dqbuf             = vidioc_dqbuf,
1559         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1560         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1561 };
1562
1563 static struct video_device tm6000_template = {
1564         .name           = "tm6000",
1565         .fops           = &tm6000_fops,
1566         .ioctl_ops      = &video_ioctl_ops,
1567         .release        = video_device_release_empty,
1568         .tvnorms        = TM6000_STD,
1569 };
1570
1571 static const struct v4l2_file_operations radio_fops = {
1572         .owner          = THIS_MODULE,
1573         .open           = tm6000_open,
1574         .poll           = v4l2_ctrl_poll,
1575         .release        = tm6000_release,
1576         .unlocked_ioctl = video_ioctl2,
1577 };
1578
1579 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1580         .vidioc_querycap        = vidioc_querycap,
1581         .vidioc_g_tuner         = radio_g_tuner,
1582         .vidioc_s_tuner         = radio_s_tuner,
1583         .vidioc_g_frequency     = vidioc_g_frequency,
1584         .vidioc_s_frequency     = vidioc_s_frequency,
1585         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1586         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1587 };
1588
1589 static struct video_device tm6000_radio_template = {
1590         .name                   = "tm6000",
1591         .fops                   = &radio_fops,
1592         .ioctl_ops              = &radio_ioctl_ops,
1593 };
1594
1595 /* -----------------------------------------------------------------
1596  *      Initialization and module stuff
1597  * ------------------------------------------------------------------
1598  */
1599
1600 static void vdev_init(struct tm6000_core *dev,
1601                 struct video_device *vfd,
1602                 const struct video_device
1603                 *template, const char *type_name)
1604 {
1605         *vfd = *template;
1606         vfd->v4l2_dev = &dev->v4l2_dev;
1607         vfd->release = video_device_release_empty;
1608         vfd->lock = &dev->lock;
1609
1610         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1611
1612         video_set_drvdata(vfd, dev);
1613 }
1614
1615 int tm6000_v4l2_register(struct tm6000_core *dev)
1616 {
1617         int ret = 0;
1618
1619         v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
1620         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
1621         v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1622                         V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
1623         v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1624                         V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
1625         v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1626                         V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
1627         v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1628                         V4L2_CID_CONTRAST, 0, 255, 1, 119);
1629         v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1630                         V4L2_CID_SATURATION, 0, 255, 1, 112);
1631         v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1632                         V4L2_CID_HUE, -128, 127, 1, 0);
1633         v4l2_ctrl_add_handler(&dev->ctrl_handler,
1634                         &dev->radio_ctrl_handler, NULL);
1635
1636         if (dev->radio_ctrl_handler.error)
1637                 ret = dev->radio_ctrl_handler.error;
1638         if (!ret && dev->ctrl_handler.error)
1639                 ret = dev->ctrl_handler.error;
1640         if (ret)
1641                 goto free_ctrl;
1642
1643         vdev_init(dev, &dev->vfd, &tm6000_template, "video");
1644
1645         dev->vfd.ctrl_handler = &dev->ctrl_handler;
1646
1647         /* init video dma queues */
1648         INIT_LIST_HEAD(&dev->vidq.active);
1649         INIT_LIST_HEAD(&dev->vidq.queued);
1650
1651         ret = video_register_device(&dev->vfd, VFL_TYPE_GRABBER, video_nr);
1652
1653         if (ret < 0) {
1654                 printk(KERN_INFO "%s: can't register video device\n",
1655                        dev->name);
1656                 goto free_ctrl;
1657         }
1658
1659         printk(KERN_INFO "%s: registered device %s\n",
1660                dev->name, video_device_node_name(&dev->vfd));
1661
1662         if (dev->caps.has_radio) {
1663                 vdev_init(dev, &dev->radio_dev, &tm6000_radio_template,
1664                                                            "radio");
1665                 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
1666                 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
1667                                             radio_nr);
1668                 if (ret < 0) {
1669                         printk(KERN_INFO "%s: can't register radio device\n",
1670                                dev->name);
1671                         goto unreg_video;
1672                 }
1673
1674                 printk(KERN_INFO "%s: registered device %s\n",
1675                        dev->name, video_device_node_name(&dev->radio_dev));
1676         }
1677
1678         printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1679         return ret;
1680
1681 unreg_video:
1682         video_unregister_device(&dev->vfd);
1683 free_ctrl:
1684         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1685         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1686         return ret;
1687 }
1688
1689 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1690 {
1691         video_unregister_device(&dev->vfd);
1692
1693         /* if URB buffers are still allocated free them now */
1694         tm6000_free_urb_buffers(dev);
1695
1696         video_unregister_device(&dev->radio_dev);
1697         return 0;
1698 }
1699
1700 int tm6000_v4l2_exit(void)
1701 {
1702         return 0;
1703 }
1704
1705 module_param(video_nr, int, 0);
1706 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1707
1708 module_param_named(debug, tm6000_debug, int, 0444);
1709 MODULE_PARM_DESC(debug, "activates debug info");
1710
1711 module_param(vid_limit, int, 0644);
1712 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1713
1714 module_param(keep_urb, bool, 0);
1715 MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");