drivers/staging/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    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22 #include <linux/module.h>
  23 #include <linux/delay.h>
  24 #include <linux/errno.h>
  25 #include <linux/fs.h>
  26 #include <linux/kernel.h>
  27 #include <linux/slab.h>
  28 #include <linux/mm.h>
  29 #include <linux/ioport.h>
  30 #include <linux/init.h>
  31 #include <linux/sched.h>
  32 #include <linux/random.h>
  33 #include <linux/version.h>
  34 #include <linux/usb.h>
  35 #include <linux/videodev2.h>
  36 #include <media/v4l2-ioctl.h>
  37 #include <linux/interrupt.h>
  38 #include <linux/kthread.h>
  39 #include <linux/highmem.h>
  40 #include <linux/freezer.h>
  41
  42 #include "tm6000-regs.h"
  43 #include "tm6000.h"
  44
  45 #define BUFFER_TIMEOUT     msecs_to_jiffies(2000)  /* 2 seconds */
  46
  47 /* Limits minimum and default number of buffers */
  48 #define TM6000_MIN_BUF 4
  49 #define TM6000_DEF_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
  57 /* Debug level */
  58 int tm6000_debug;
  59 EXPORT_SYMBOL_GPL(tm6000_debug);
  60
  61 /* supported controls */
  62 static struct v4l2_queryctrl tm6000_qctrl[] = {
  63         {
  64                 .id            = V4L2_CID_BRIGHTNESS,
  65                 .type          = V4L2_CTRL_TYPE_INTEGER,
  66                 .name          = "Brightness",
  67                 .minimum       = 0,
  68                 .maximum       = 255,
  69                 .step          = 1,
  70                 .default_value = 54,
  71                 .flags         = 0,
  72         }, {
  73                 .id            = V4L2_CID_CONTRAST,
  74                 .type          = V4L2_CTRL_TYPE_INTEGER,
  75                 .name          = "Contrast",
  76                 .minimum       = 0,
  77                 .maximum       = 255,
  78                 .step          = 0x1,
  79                 .default_value = 119,
  80                 .flags         = 0,
  81         }, {
  82                 .id            = V4L2_CID_SATURATION,
  83                 .type          = V4L2_CTRL_TYPE_INTEGER,
  84                 .name          = "Saturation",
  85                 .minimum       = 0,
  86                 .maximum       = 255,
  87                 .step          = 0x1,
  88                 .default_value = 112,
  89                 .flags         = 0,
  90         }, {
  91                 .id            = V4L2_CID_HUE,
  92                 .type          = V4L2_CTRL_TYPE_INTEGER,
  93                 .name          = "Hue",
  94                 .minimum       = -128,
  95                 .maximum       = 127,
  96                 .step          = 0x1,
  97                 .default_value = 0,
  98                 .flags         = 0,
  99         }
 100 };
 101
 102 static int qctl_regs[ARRAY_SIZE(tm6000_qctrl)];
 103
 104 static struct tm6000_fmt format[] = {
 105         {
 106                 .name     = "4:2:2, packed, YVY2",
 107                 .fourcc   = V4L2_PIX_FMT_YUYV,
 108                 .depth    = 16,
 109         }, {
 110                 .name     = "4:2:2, packed, UYVY",
 111                 .fourcc   = V4L2_PIX_FMT_UYVY,
 112                 .depth    = 16,
 113         }, {
 114                 .name     = "A/V + VBI mux packet",
 115                 .fourcc   = V4L2_PIX_FMT_TM6000,
 116                 .depth    = 16,
 117         }
 118 };
 119
 120 /* ------------------------------------------------------------------
 121         DMA and thread functions
 122    ------------------------------------------------------------------*/
 123
 124 #define norm_maxw(a) 720
 125 #define norm_maxh(a) 576
 126
 127 #define norm_minw(a) norm_maxw(a)
 128 #define norm_minh(a) norm_maxh(a)
 129
 130 /*
 131  * video-buf generic routine to get the next available buffer
 132  */
 133 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
 134                                struct tm6000_buffer   **buf)
 135 {
 136         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 137         char *outp;
 138
 139         if (list_empty(&dma_q->active)) {
 140                 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
 141                 *buf = NULL;
 142                 return;
 143         }
 144
 145         *buf = list_entry(dma_q->active.next,
 146                         struct tm6000_buffer, vb.queue);
 147
 148         if (!buf)
 149                 return;
 150
 151         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 152         outp = videobuf_to_vmalloc(&(*buf)->vb);
 153
 154         return;
 155 }
 156
 157 /*
 158  * Announces that a buffer were filled and request the next
 159  */
 160 static inline void buffer_filled(struct tm6000_core *dev,
 161                                  struct tm6000_dmaqueue *dma_q,
 162                                  struct tm6000_buffer *buf)
 163 {
 164         /* Advice that buffer was filled */
 165         dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
 166         buf->vb.state = VIDEOBUF_DONE;
 167         buf->vb.field_count++;
 168         do_gettimeofday(&buf->vb.ts);
 169
 170         list_del(&buf->vb.queue);
 171         wake_up(&buf->vb.done);
 172 }
 173
 174 const char *tm6000_msg_type[] = {
 175         "unknown(0)",   /* 0 */
 176         "video",        /* 1 */
 177         "audio",        /* 2 */
 178         "vbi",          /* 3 */
 179         "pts",          /* 4 */
 180         "err",          /* 5 */
 181         "unknown(6)",   /* 6 */
 182         "unknown(7)",   /* 7 */
 183 };
 184
 185 /*
 186  * Identify the tm5600/6000 buffer header type and properly handles
 187  */
 188 static int copy_streams(u8 *data, unsigned long len,
 189                         struct urb *urb)
 190 {
 191         struct tm6000_dmaqueue  *dma_q = urb->context;
 192         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 193         u8 *ptr=data, *endp=data+len, c;
 194         unsigned long header=0;
 195         int rc=0;
 196         unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
 197         struct tm6000_buffer *vbuf;
 198         char *voutp = NULL;
 199         unsigned int linewidth;
 200
 201         /* get video buffer */
 202         get_next_buf (dma_q, &vbuf);
 203         if (!vbuf)
 204                 return rc;
 205         voutp = videobuf_to_vmalloc(&vbuf->vb);
 206         if (!voutp)
 207                 return 0;
 208
 209         for (ptr = data; ptr < endp;) {
 210                 if (!dev->isoc_ctl.cmd) {
 211                         /* Header */
 212                         if (dev->isoc_ctl.tmp_buf_len > 0) {
 213                                 /* from last urb or packet */
 214                                 header = dev->isoc_ctl.tmp_buf;
 215                                 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
 216                                         memcpy ((u8 *)&header +
 217                                                 dev->isoc_ctl.tmp_buf_len,
 218                                                 ptr,
 219                                                 4 - dev->isoc_ctl.tmp_buf_len);
 220                                         ptr += 4 - dev->isoc_ctl.tmp_buf_len;
 221                                 }
 222                                 dev->isoc_ctl.tmp_buf_len = 0;
 223                         } else {
 224                                 if (ptr + 3 >= endp) {
 225                                         /* have incomplete header */
 226                                         dev->isoc_ctl.tmp_buf_len = endp - ptr;
 227                                         memcpy (&dev->isoc_ctl.tmp_buf, ptr,
 228                                                 dev->isoc_ctl.tmp_buf_len);
 229                                         return rc;
 230                                 }
 231                                 /* Seek for sync */
 232                                 for (; ptr < endp - 3; ptr++) {
 233                                         if (*(ptr + 3) == 0x47)
 234                                                 break;
 235                                 }
 236                                 /* Get message header */
 237                                 header = *(unsigned long *)ptr;
 238                                 ptr += 4;
 239                         }
 240
 241                         /* split the header fields */
 242                         c = (header >> 24) & 0xff;
 243                         size = ((header & 0x7e) << 1);
 244                         if (size > 0)
 245                                 size -= 4;
 246                         block = (header >> 7) & 0xf;
 247                         field = (header >> 11) & 0x1;
 248                         line  = (header >> 12) & 0x1ff;
 249                         cmd   = (header >> 21) & 0x7;
 250                         /* Validates haeder fields */
 251                         if (size > TM6000_URB_MSG_LEN)
 252                                 size = TM6000_URB_MSG_LEN;
 253                         pktsize = TM6000_URB_MSG_LEN;
 254                         /* calculate position in buffer
 255                          * and change the buffer
 256                          */
 257                         switch (cmd) {
 258                         case TM6000_URB_MSG_VIDEO:
 259                                 if ((dev->isoc_ctl.vfield != field) &&
 260                                         (field == 1)) {
 261                                         /* Announces that a new buffer
 262                                          * were filled
 263                                          */
 264                                         buffer_filled (dev, dma_q, vbuf);
 265                                         dprintk (dev, V4L2_DEBUG_ISOC,
 266                                                         "new buffer filled\n");
 267                                         get_next_buf (dma_q, &vbuf);
 268                                         if (!vbuf)
 269                                                 return rc;
 270                                         voutp = videobuf_to_vmalloc (&vbuf->vb);
 271                                         if (!voutp)
 272                                                 return rc;
 273                                         memset(voutp, 0, vbuf->vb.size);
 274                                 }
 275                                 linewidth = vbuf->vb.width << 1;
 276                                 pos = ((line << 1) - field - 1) * linewidth +
 277                                         block * TM6000_URB_MSG_LEN;
 278                                 /* Don't allow to write out of the buffer */
 279                                 if (pos + size > vbuf->vb.size)
 280                                         cmd = TM6000_URB_MSG_ERR;
 281                                 dev->isoc_ctl.vfield = field;
 282                                 break;
 283                         case TM6000_URB_MSG_VBI:
 284                                 break;
 285                         case TM6000_URB_MSG_AUDIO:
 286                         case TM6000_URB_MSG_PTS:
 287                                 size = pktsize;         /* Size is always 180 bytes */
 288                                 break;
 289                         }
 290                 } else {
 291                         /* Continue the last copy */
 292                         cmd = dev->isoc_ctl.cmd;
 293                         size = dev->isoc_ctl.size;
 294                         pos = dev->isoc_ctl.pos;
 295                         pktsize = dev->isoc_ctl.pktsize;
 296                 }
 297                 cpysize = (endp - ptr > size) ? size : endp - ptr;
 298                 if (cpysize) {
 299                         /* copy data in different buffers */
 300                         switch (cmd) {
 301                         case TM6000_URB_MSG_VIDEO:
 302                                 /* Fills video buffer */
 303                                 if (vbuf)
 304                                         memcpy (&voutp[pos], ptr, cpysize);
 305                                 break;
 306                         case TM6000_URB_MSG_AUDIO:
 307                                 /* Need some code to copy audio buffer */
 308                                 if (dev->fourcc == V4L2_PIX_FMT_YUYV) {
 309                                         /* Swap word bytes */
 310                                         int i;
 311
 312                                         for (i = 0; i < cpysize; i += 2)
 313                                                 swab16s((u16 *)(ptr + i));
 314                                 }
 315                                 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
 316                                 break;
 317                         case TM6000_URB_MSG_VBI:
 318                                 /* Need some code to copy vbi buffer */
 319                                 break;
 320                         case TM6000_URB_MSG_PTS:
 321                                 /* Need some code to copy pts */
 322                                 break;
 323                         }
 324                 }
 325                 if (ptr + pktsize > endp) {
 326                         /* End of URB packet, but cmd processing is not
 327                          * complete. Preserve the state for a next packet
 328                          */
 329                         dev->isoc_ctl.pos = pos + cpysize;
 330                         dev->isoc_ctl.size = size - cpysize;
 331                         dev->isoc_ctl.cmd = cmd;
 332                         dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
 333                         ptr += endp - ptr;
 334                 } else {
 335                         dev->isoc_ctl.cmd = 0;
 336                         ptr += pktsize;
 337                 }
 338         }
 339         return 0;
 340 }
 341
 342 /*
 343  * Identify the tm5600/6000 buffer header type and properly handles
 344  */
 345 static int copy_multiplexed(u8 *ptr, unsigned long len,
 346                         struct urb *urb)
 347 {
 348         struct tm6000_dmaqueue  *dma_q = urb->context;
 349         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 350         unsigned int pos=dev->isoc_ctl.pos,cpysize;
 351         int rc=1;
 352         struct tm6000_buffer *buf;
 353         char *outp = NULL;
 354
 355         get_next_buf(dma_q, &buf);
 356         if (buf)
 357                 outp = videobuf_to_vmalloc(&buf->vb);
 358
 359         if (!outp)
 360                 return 0;
 361
 362         while (len>0) {
 363                 cpysize=min(len,buf->vb.size-pos);
 364                 //printk("Copying %d bytes (max=%lu) from %p to %p[%u]\n",cpysize,(*buf)->vb.size,ptr,out_p,pos);
 365                 memcpy(&outp[pos], ptr, cpysize);
 366                 pos+=cpysize;
 367                 ptr+=cpysize;
 368                 len-=cpysize;
 369                 if (pos >= buf->vb.size) {
 370                         pos=0;
 371                         /* Announces that a new buffer were filled */
 372                         buffer_filled (dev, dma_q, buf);
 373                         dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
 374                         get_next_buf (dma_q, &buf);
 375                         if (!buf)
 376                                 break;
 377                         outp = videobuf_to_vmalloc(&(buf->vb));
 378                         if (!outp)
 379                                 return rc;
 380                         pos = 0;
 381                 }
 382         }
 383
 384         dev->isoc_ctl.pos=pos;
 385         return rc;
 386 }
 387
 388 static void inline print_err_status (struct tm6000_core *dev,
 389                                      int packet, int status)
 390 {
 391         char *errmsg = "Unknown";
 392
 393         switch(status) {
 394         case -ENOENT:
 395                 errmsg = "unlinked synchronuously";
 396                 break;
 397         case -ECONNRESET:
 398                 errmsg = "unlinked asynchronuously";
 399                 break;
 400         case -ENOSR:
 401                 errmsg = "Buffer error (overrun)";
 402                 break;
 403         case -EPIPE:
 404                 errmsg = "Stalled (device not responding)";
 405                 break;
 406         case -EOVERFLOW:
 407                 errmsg = "Babble (bad cable?)";
 408                 break;
 409         case -EPROTO:
 410                 errmsg = "Bit-stuff error (bad cable?)";
 411                 break;
 412         case -EILSEQ:
 413                 errmsg = "CRC/Timeout (could be anything)";
 414                 break;
 415         case -ETIME:
 416                 errmsg = "Device does not respond";
 417                 break;
 418         }
 419         if (packet<0) {
 420                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
 421                         status, errmsg);
 422         } else {
 423                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
 424                         packet, status, errmsg);
 425         }
 426 }
 427
 428
 429 /*
 430  * Controls the isoc copy of each urb packet
 431  */
 432 static inline int tm6000_isoc_copy(struct urb *urb)
 433 {
 434         struct tm6000_dmaqueue  *dma_q = urb->context;
 435         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 436         int i, len=0, rc=1, status;
 437         char *p;
 438
 439         if (urb->status < 0) {
 440                 print_err_status (dev, -1, urb->status);
 441                 return 0;
 442         }
 443
 444         for (i = 0; i < urb->number_of_packets; i++) {
 445                 status = urb->iso_frame_desc[i].status;
 446
 447                 if (status<0) {
 448                         print_err_status (dev,i,status);
 449                         continue;
 450                 }
 451
 452                 len = urb->iso_frame_desc[i].actual_length;
 453
 454                 if (len > 0) {
 455                         p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 456                         if (!urb->iso_frame_desc[i].status) {
 457                                 if ((dev->fourcc)==V4L2_PIX_FMT_TM6000) {
 458                                         rc=copy_multiplexed(p, len, urb);
 459                                         if (rc<=0)
 460                                                 return rc;
 461                                 } else {
 462                                         copy_streams(p, len, urb);
 463                                 }
 464                         }
 465                 }
 466         }
 467         return rc;
 468 }
 469
 470 /* ------------------------------------------------------------------
 471         URB control
 472    ------------------------------------------------------------------*/
 473
 474 /*
 475  * IRQ callback, called by URB callback
 476  */
 477 static void tm6000_irq_callback(struct urb *urb)
 478 {
 479         struct tm6000_dmaqueue  *dma_q = urb->context;
 480         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 481         int i;
 482
 483         if (!dev)
 484                 return;
 485
 486         spin_lock(&dev->slock);
 487         tm6000_isoc_copy(urb);
 488         spin_unlock(&dev->slock);
 489
 490         /* Reset urb buffers */
 491         for (i = 0; i < urb->number_of_packets; i++) {
 492                 urb->iso_frame_desc[i].status = 0;
 493                 urb->iso_frame_desc[i].actual_length = 0;
 494         }
 495
 496         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 497         if (urb->status)
 498                 tm6000_err("urb resubmit failed (error=%i)\n",
 499                         urb->status);
 500 }
 501
 502 /*
 503  * Stop and Deallocate URBs
 504  */
 505 static void tm6000_uninit_isoc(struct tm6000_core *dev)
 506 {
 507         struct urb *urb;
 508         int i;
 509
 510         dev->isoc_ctl.buf = NULL;
 511         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 512                 urb=dev->isoc_ctl.urb[i];
 513                 if (urb) {
 514                         usb_kill_urb(urb);
 515                         usb_unlink_urb(urb);
 516                         if (dev->isoc_ctl.transfer_buffer[i]) {
 517                                 usb_free_coherent(dev->udev,
 518                                                 urb->transfer_buffer_length,
 519                                                 dev->isoc_ctl.transfer_buffer[i],
 520                                                 urb->transfer_dma);
 521                         }
 522                         usb_free_urb(urb);
 523                         dev->isoc_ctl.urb[i] = NULL;
 524                 }
 525                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 526         }
 527
 528         kfree (dev->isoc_ctl.urb);
 529         kfree (dev->isoc_ctl.transfer_buffer);
 530
 531         dev->isoc_ctl.urb=NULL;
 532         dev->isoc_ctl.transfer_buffer=NULL;
 533         dev->isoc_ctl.num_bufs = 0;
 534 }
 535
 536 /*
 537  * Allocate URBs and start IRQ
 538  */
 539 static int tm6000_prepare_isoc(struct tm6000_core *dev, unsigned int framesize)
 540 {
 541         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 542         int i, j, sb_size, pipe, size, max_packets, num_bufs = 8;
 543         struct urb *urb;
 544
 545         /* De-allocates all pending stuff */
 546         tm6000_uninit_isoc(dev);
 547
 548         usb_set_interface(dev->udev,
 549                           dev->isoc_in.bInterfaceNumber,
 550                           dev->isoc_in.bAlternateSetting);
 551
 552         pipe = usb_rcvisocpipe(dev->udev,
 553                                dev->isoc_in.endp->desc.bEndpointAddress &
 554                                USB_ENDPOINT_NUMBER_MASK);
 555
 556         size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
 557
 558         if (size > dev->isoc_in.maxsize)
 559                 size = dev->isoc_in.maxsize;
 560
 561         dev->isoc_ctl.max_pkt_size = size;
 562
 563         max_packets = ( framesize + size - 1) / size;
 564
 565         if (max_packets > TM6000_MAX_ISO_PACKETS)
 566                 max_packets = TM6000_MAX_ISO_PACKETS;
 567
 568         sb_size = max_packets * size;
 569
 570         dev->isoc_ctl.num_bufs = num_bufs;
 571
 572         dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 573         if (!dev->isoc_ctl.urb) {
 574                 tm6000_err("cannot alloc memory for usb buffers\n");
 575                 return -ENOMEM;
 576         }
 577
 578         dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
 579                                    GFP_KERNEL);
 580         if (!dev->isoc_ctl.transfer_buffer) {
 581                 tm6000_err("cannot allocate memory for usbtransfer\n");
 582                 kfree(dev->isoc_ctl.urb);
 583                 return -ENOMEM;
 584         }
 585
 586         dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
 587                     " (%d bytes) of %d bytes each to handle %u size\n",
 588                     max_packets, num_bufs, sb_size,
 589                     dev->isoc_in.maxsize, size);
 590
 591         /* allocate urbs and transfer buffers */
 592         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 593                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 594                 if (!urb) {
 595                         tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
 596                         tm6000_uninit_isoc(dev);
 597                         usb_free_urb(urb);
 598                         return -ENOMEM;
 599                 }
 600                 dev->isoc_ctl.urb[i] = urb;
 601
 602                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
 603                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 604                 if (!dev->isoc_ctl.transfer_buffer[i]) {
 605                         tm6000_err ("unable to allocate %i bytes for transfer"
 606                                         " buffer %i%s\n",
 607                                         sb_size, i,
 608                                         in_interrupt()?" while in int":"");
 609                         tm6000_uninit_isoc(dev);
 610                         return -ENOMEM;
 611                 }
 612                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
 613
 614                 usb_fill_bulk_urb(urb, dev->udev, pipe,
 615                                   dev->isoc_ctl.transfer_buffer[i], sb_size,
 616                                   tm6000_irq_callback, dma_q);
 617                 urb->interval = dev->isoc_in.endp->desc.bInterval;
 618                 urb->number_of_packets = max_packets;
 619                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 620
 621                 for (j = 0; j < max_packets; j++) {
 622                         urb->iso_frame_desc[j].offset = size * j;
 623                         urb->iso_frame_desc[j].length = size;
 624                 }
 625         }
 626
 627         return 0;
 628 }
 629
 630 static int tm6000_start_thread( struct tm6000_core *dev)
 631 {
 632         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 633         int i;
 634
 635         dma_q->frame=0;
 636         dma_q->ini_jiffies=jiffies;
 637
 638         init_waitqueue_head(&dma_q->wq);
 639
 640         /* submit urbs and enables IRQ */
 641         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 642                 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 643                 if (rc) {
 644                         tm6000_err("submit of urb %i failed (error=%i)\n", i,
 645                                    rc);
 646                         tm6000_uninit_isoc(dev);
 647                         return rc;
 648                 }
 649         }
 650
 651         return 0;
 652 }
 653
 654 /* ------------------------------------------------------------------
 655         Videobuf operations
 656    ------------------------------------------------------------------*/
 657
 658 static int
 659 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 660 {
 661         struct tm6000_fh *fh = vq->priv_data;
 662
 663         *size = fh->fmt->depth * fh->width * fh->height >> 3;
 664         if (0 == *count)
 665                 *count = TM6000_DEF_BUF;
 666
 667         if (*count < TM6000_MIN_BUF) {
 668                 *count=TM6000_MIN_BUF;
 669         }
 670
 671         while (*size * *count > vid_limit * 1024 * 1024)
 672                 (*count)--;
 673
 674         return 0;
 675 }
 676
 677 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
 678 {
 679         struct tm6000_fh *fh = vq->priv_data;
 680         struct tm6000_core   *dev = fh->dev;
 681         unsigned long flags;
 682
 683         if (in_interrupt())
 684                 BUG();
 685
 686         /* We used to wait for the buffer to finish here, but this didn't work
 687            because, as we were keeping the state as VIDEOBUF_QUEUED,
 688            videobuf_queue_cancel marked it as finished for us.
 689            (Also, it could wedge forever if the hardware was misconfigured.)
 690
 691            This should be safe; by the time we get here, the buffer isn't
 692            queued anymore. If we ever start marking the buffers as
 693            VIDEOBUF_ACTIVE, it won't be, though.
 694         */
 695         spin_lock_irqsave(&dev->slock, flags);
 696         if (dev->isoc_ctl.buf == buf)
 697                 dev->isoc_ctl.buf = NULL;
 698         spin_unlock_irqrestore(&dev->slock, flags);
 699
 700         videobuf_vmalloc_free(&buf->vb);
 701         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 702 }
 703
 704 static int
 705 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 706                                                 enum v4l2_field field)
 707 {
 708         struct tm6000_fh     *fh  = vq->priv_data;
 709         struct tm6000_buffer *buf = container_of(vb,struct tm6000_buffer,vb);
 710         struct tm6000_core   *dev = fh->dev;
 711         int rc = 0, urb_init = 0;
 712
 713         BUG_ON(NULL == fh->fmt);
 714
 715
 716         /* FIXME: It assumes depth=2 */
 717         /* The only currently supported format is 16 bits/pixel */
 718         buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
 719         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 720                 return -EINVAL;
 721
 722         if (buf->fmt       != fh->fmt    ||
 723             buf->vb.width  != fh->width  ||
 724             buf->vb.height != fh->height ||
 725             buf->vb.field  != field) {
 726                 buf->fmt       = fh->fmt;
 727                 buf->vb.width  = fh->width;
 728                 buf->vb.height = fh->height;
 729                 buf->vb.field  = field;
 730                 buf->vb.state = VIDEOBUF_NEEDS_INIT;
 731         }
 732
 733         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 734                 if (0 != (rc = videobuf_iolock(vq, &buf->vb, NULL)))
 735                         goto fail;
 736                 urb_init = 1;
 737         }
 738
 739         if (!dev->isoc_ctl.num_bufs)
 740                 urb_init = 1;
 741
 742         if (urb_init) {
 743                 rc = tm6000_prepare_isoc(dev, buf->vb.size);
 744                 if (rc < 0)
 745                         goto fail;
 746
 747                 rc = tm6000_start_thread(dev);
 748                 if (rc < 0)
 749                         goto fail;
 750
 751         }
 752
 753         buf->vb.state = VIDEOBUF_PREPARED;
 754         return 0;
 755
 756 fail:
 757         free_buffer(vq, buf);
 758         return rc;
 759 }
 760
 761 static void
 762 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 763 {
 764         struct tm6000_buffer    *buf     = container_of(vb,struct tm6000_buffer,vb);
 765         struct tm6000_fh        *fh      = vq->priv_data;
 766         struct tm6000_core      *dev     = fh->dev;
 767         struct tm6000_dmaqueue  *vidq    = &dev->vidq;
 768
 769         buf->vb.state = VIDEOBUF_QUEUED;
 770         list_add_tail(&buf->vb.queue, &vidq->active);
 771 }
 772
 773 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 774 {
 775         struct tm6000_buffer   *buf  = container_of(vb,struct tm6000_buffer,vb);
 776
 777         free_buffer(vq,buf);
 778 }
 779
 780 static struct videobuf_queue_ops tm6000_video_qops = {
 781         .buf_setup      = buffer_setup,
 782         .buf_prepare    = buffer_prepare,
 783         .buf_queue      = buffer_queue,
 784         .buf_release    = buffer_release,
 785 };
 786
 787 /* ------------------------------------------------------------------
 788         IOCTL handling
 789    ------------------------------------------------------------------*/
 790
 791 static int res_get(struct tm6000_core *dev, struct tm6000_fh *fh)
 792 {
 793         /* is it free? */
 794         mutex_lock(&dev->lock);
 795         if (dev->resources) {
 796                 /* no, someone else uses it */
 797                 mutex_unlock(&dev->lock);
 798                 return 0;
 799         }
 800         /* it's free, grab it */
 801         dev->resources =1;
 802         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
 803         mutex_unlock(&dev->lock);
 804         return 1;
 805 }
 806
 807 static int res_locked(struct tm6000_core *dev)
 808 {
 809         return (dev->resources);
 810 }
 811
 812 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
 813 {
 814         mutex_lock(&dev->lock);
 815         dev->resources = 0;
 816         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
 817         mutex_unlock(&dev->lock);
 818 }
 819
 820 /* ------------------------------------------------------------------
 821         IOCTL vidioc handling
 822    ------------------------------------------------------------------*/
 823 static int vidioc_querycap (struct file *file, void  *priv,
 824                                         struct v4l2_capability *cap)
 825 {
 826         //      struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 827
 828         strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
 829         strlcpy(cap->card,"Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
 830         //      strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
 831         cap->version = TM6000_VERSION;
 832         cap->capabilities =     V4L2_CAP_VIDEO_CAPTURE |
 833                                 V4L2_CAP_STREAMING     |
 834                                 V4L2_CAP_TUNER         |
 835                                 V4L2_CAP_READWRITE;
 836         return 0;
 837 }
 838
 839 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 840                                         struct v4l2_fmtdesc *f)
 841 {
 842         if (unlikely(f->index >= ARRAY_SIZE(format)))
 843                 return -EINVAL;
 844
 845         strlcpy(f->description,format[f->index].name,sizeof(f->description));
 846         f->pixelformat = format[f->index].fourcc;
 847         return 0;
 848 }
 849
 850 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 851                                         struct v4l2_format *f)
 852 {
 853         struct tm6000_fh  *fh=priv;
 854
 855         f->fmt.pix.width        = fh->width;
 856         f->fmt.pix.height       = fh->height;
 857         f->fmt.pix.field        = fh->vb_vidq.field;
 858         f->fmt.pix.pixelformat  = fh->fmt->fourcc;
 859         f->fmt.pix.bytesperline =
 860                 (f->fmt.pix.width * fh->fmt->depth) >> 3;
 861         f->fmt.pix.sizeimage =
 862                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 863
 864         return (0);
 865 }
 866
 867 static struct tm6000_fmt* format_by_fourcc(unsigned int fourcc)
 868 {
 869         unsigned int i;
 870
 871         for (i = 0; i < ARRAY_SIZE(format); i++)
 872                 if (format[i].fourcc == fourcc)
 873                         return format+i;
 874         return NULL;
 875 }
 876
 877 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
 878                         struct v4l2_format *f)
 879 {
 880         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 881         struct tm6000_fmt *fmt;
 882         enum v4l2_field field;
 883
 884         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 885         if (NULL == fmt) {
 886                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
 887                                 " invalid.\n", f->fmt.pix.pixelformat);
 888                 return -EINVAL;
 889         }
 890
 891         field = f->fmt.pix.field;
 892
 893         if (field == V4L2_FIELD_ANY) {
 894 //              field=V4L2_FIELD_INTERLACED;
 895                 field=V4L2_FIELD_SEQ_TB;
 896         } else if (V4L2_FIELD_INTERLACED != field) {
 897                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
 898                 return -EINVAL;
 899         }
 900
 901         tm6000_get_std_res (dev);
 902
 903         f->fmt.pix.width  = dev->width;
 904         f->fmt.pix.height = dev->height;
 905
 906         f->fmt.pix.width &= ~0x01;
 907
 908         f->fmt.pix.field = field;
 909
 910         f->fmt.pix.bytesperline =
 911                 (f->fmt.pix.width * fmt->depth) >> 3;
 912         f->fmt.pix.sizeimage =
 913                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 914
 915         return 0;
 916 }
 917
 918 /*FIXME: This seems to be generic enough to be at videodev2 */
 919 static int vidioc_s_fmt_vid_cap (struct file *file, void *priv,
 920                                         struct v4l2_format *f)
 921 {
 922         struct tm6000_fh  *fh=priv;
 923         struct tm6000_core *dev = fh->dev;
 924         int ret = vidioc_try_fmt_vid_cap(file,fh,f);
 925         if (ret < 0)
 926                 return (ret);
 927
 928         fh->fmt           = format_by_fourcc(f->fmt.pix.pixelformat);
 929         fh->width         = f->fmt.pix.width;
 930         fh->height        = f->fmt.pix.height;
 931         fh->vb_vidq.field = f->fmt.pix.field;
 932         fh->type          = f->type;
 933
 934         dev->fourcc       = f->fmt.pix.pixelformat;
 935
 936         tm6000_set_fourcc_format(dev);
 937
 938         return (0);
 939 }
 940
 941 static int vidioc_reqbufs (struct file *file, void *priv,
 942                            struct v4l2_requestbuffers *p)
 943 {
 944         struct tm6000_fh  *fh=priv;
 945
 946         return (videobuf_reqbufs(&fh->vb_vidq, p));
 947 }
 948
 949 static int vidioc_querybuf (struct file *file, void *priv,
 950                             struct v4l2_buffer *p)
 951 {
 952         struct tm6000_fh  *fh=priv;
 953
 954         return (videobuf_querybuf(&fh->vb_vidq, p));
 955 }
 956
 957 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *p)
 958 {
 959         struct tm6000_fh  *fh=priv;
 960
 961         return (videobuf_qbuf(&fh->vb_vidq, p));
 962 }
 963
 964 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *p)
 965 {
 966         struct tm6000_fh  *fh=priv;
 967
 968         return (videobuf_dqbuf(&fh->vb_vidq, p,
 969                                 file->f_flags & O_NONBLOCK));
 970 }
 971
 972 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 973 static int vidiocgmbuf (struct file *file, void *priv, struct video_mbuf *mbuf)
 974 {
 975         struct tm6000_fh  *fh=priv;
 976
 977         return videobuf_cgmbuf (&fh->vb_vidq, mbuf, 8);
 978 }
 979 #endif
 980
 981 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 982 {
 983         struct tm6000_fh  *fh=priv;
 984         struct tm6000_core *dev    = fh->dev;
 985
 986         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 987                 return -EINVAL;
 988         if (i != fh->type)
 989                 return -EINVAL;
 990
 991         if (!res_get(dev,fh))
 992                 return -EBUSY;
 993         return (videobuf_streamon(&fh->vb_vidq));
 994 }
 995
 996 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 997 {
 998         struct tm6000_fh  *fh=priv;
 999         struct tm6000_core *dev    = fh->dev;
1000
1001         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1002                 return -EINVAL;
1003         if (i != fh->type)
1004                 return -EINVAL;
1005
1006         videobuf_streamoff(&fh->vb_vidq);
1007         res_free(dev,fh);
1008
1009         return (0);
1010 }
1011
1012 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *norm)
1013 {
1014         int rc=0;
1015         struct tm6000_fh   *fh=priv;
1016         struct tm6000_core *dev = fh->dev;
1017
1018         rc = tm6000_init_analog_mode(dev);
1019
1020         fh->width  = dev->width;
1021         fh->height = dev->height;
1022
1023         if (rc<0)
1024                 return rc;
1025
1026         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1027
1028         return 0;
1029 }
1030
1031 static int vidioc_enum_input (struct file *file, void *priv,
1032                                 struct v4l2_input *inp)
1033 {
1034         switch (inp->index) {
1035         case TM6000_INPUT_TV:
1036                 inp->type = V4L2_INPUT_TYPE_TUNER;
1037                 strcpy(inp->name,"Television");
1038                 break;
1039         case TM6000_INPUT_COMPOSITE:
1040                 inp->type = V4L2_INPUT_TYPE_CAMERA;
1041                 strcpy(inp->name,"Composite");
1042                 break;
1043         case TM6000_INPUT_SVIDEO:
1044                 inp->type = V4L2_INPUT_TYPE_CAMERA;
1045                 strcpy(inp->name,"S-Video");
1046                 break;
1047         default:
1048                 return -EINVAL;
1049         }
1050         inp->std = TM6000_STD;
1051
1052         return 0;
1053 }
1054
1055 static int vidioc_g_input (struct file *file, void *priv, unsigned int *i)
1056 {
1057         struct tm6000_fh   *fh=priv;
1058         struct tm6000_core *dev = fh->dev;
1059
1060         *i=dev->input;
1061
1062         return 0;
1063 }
1064 static int vidioc_s_input (struct file *file, void *priv, unsigned int i)
1065 {
1066         struct tm6000_fh   *fh=priv;
1067         struct tm6000_core *dev = fh->dev;
1068         int rc=0;
1069         char buf[1];
1070
1071         switch (i) {
1072         case TM6000_INPUT_TV:
1073                 dev->input=i;
1074                 *buf=0;
1075                 break;
1076         case TM6000_INPUT_COMPOSITE:
1077         case TM6000_INPUT_SVIDEO:
1078                 dev->input=i;
1079                 *buf=1;
1080                 break;
1081         default:
1082                 return -EINVAL;
1083         }
1084         rc=tm6000_read_write_usb (dev, USB_DIR_OUT | USB_TYPE_VENDOR,
1085                                REQ_03_SET_GET_MCU_PIN, 0x03, 1, buf, 1);
1086
1087         if (!rc) {
1088                 dev->input=i;
1089                 rc=vidioc_s_std (file, priv, &dev->vfd->current_norm);
1090         }
1091
1092         return (rc);
1093 }
1094
1095         /* --- controls ---------------------------------------------- */
1096 static int vidioc_queryctrl (struct file *file, void *priv,
1097                                 struct v4l2_queryctrl *qc)
1098 {
1099         int i;
1100
1101         for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1102                 if (qc->id && qc->id == tm6000_qctrl[i].id) {
1103                         memcpy(qc, &(tm6000_qctrl[i]),
1104                                 sizeof(*qc));
1105                         return (0);
1106                 }
1107
1108         return -EINVAL;
1109 }
1110
1111 static int vidioc_g_ctrl (struct file *file, void *priv,
1112                                 struct v4l2_control *ctrl)
1113 {
1114         struct tm6000_fh  *fh=priv;
1115         struct tm6000_core *dev    = fh->dev;
1116         int  val;
1117
1118         /* FIXME: Probably, those won't work! Maybe we need shadow regs */
1119         switch (ctrl->id) {
1120         case V4L2_CID_CONTRAST:
1121                 val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
1122                 break;
1123         case V4L2_CID_BRIGHTNESS:
1124                 val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
1125                 return 0;
1126         case V4L2_CID_SATURATION:
1127                 val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
1128                 return 0;
1129         case V4L2_CID_HUE:
1130                 val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
1131                 return 0;
1132         default:
1133                 return -EINVAL;
1134         }
1135
1136         if (val<0)
1137                 return val;
1138
1139         ctrl->value=val;
1140
1141         return 0;
1142 }
1143 static int vidioc_s_ctrl (struct file *file, void *priv,
1144                                 struct v4l2_control *ctrl)
1145 {
1146         struct tm6000_fh   *fh  =priv;
1147         struct tm6000_core *dev = fh->dev;
1148         u8  val=ctrl->value;
1149
1150         switch (ctrl->id) {
1151         case V4L2_CID_CONTRAST:
1152   tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1153                 return 0;
1154         case V4L2_CID_BRIGHTNESS:
1155   tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1156                 return 0;
1157         case V4L2_CID_SATURATION:
1158   tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1159                 return 0;
1160         case V4L2_CID_HUE:
1161   tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1162                 return 0;
1163         }
1164         return -EINVAL;
1165 }
1166
1167 static int vidioc_g_tuner (struct file *file, void *priv,
1168                                 struct v4l2_tuner *t)
1169 {
1170         struct tm6000_fh   *fh  =priv;
1171         struct tm6000_core *dev = fh->dev;
1172
1173         if (unlikely(UNSET == dev->tuner_type))
1174                 return -EINVAL;
1175         if (0 != t->index)
1176                 return -EINVAL;
1177
1178         strcpy(t->name, "Television");
1179         t->type       = V4L2_TUNER_ANALOG_TV;
1180         t->capability = V4L2_TUNER_CAP_NORM;
1181         t->rangehigh  = 0xffffffffUL;
1182         t->rxsubchans = V4L2_TUNER_SUB_MONO;
1183
1184         return 0;
1185 }
1186
1187 static int vidioc_s_tuner (struct file *file, void *priv,
1188                                 struct v4l2_tuner *t)
1189 {
1190         struct tm6000_fh   *fh  =priv;
1191         struct tm6000_core *dev = fh->dev;
1192
1193         if (UNSET == dev->tuner_type)
1194                 return -EINVAL;
1195         if (0 != t->index)
1196                 return -EINVAL;
1197
1198         return 0;
1199 }
1200
1201 static int vidioc_g_frequency (struct file *file, void *priv,
1202                                 struct v4l2_frequency *f)
1203 {
1204         struct tm6000_fh   *fh  =priv;
1205         struct tm6000_core *dev = fh->dev;
1206
1207         if (unlikely(UNSET == dev->tuner_type))
1208                 return -EINVAL;
1209
1210         f->type = V4L2_TUNER_ANALOG_TV;
1211         f->frequency = dev->freq;
1212
1213         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1214
1215         return 0;
1216 }
1217
1218 static int vidioc_s_frequency (struct file *file, void *priv,
1219                                 struct v4l2_frequency *f)
1220 {
1221         struct tm6000_fh   *fh  =priv;
1222         struct tm6000_core *dev = fh->dev;
1223
1224         if (unlikely(f->type != V4L2_TUNER_ANALOG_TV))
1225                 return -EINVAL;
1226
1227         if (unlikely(UNSET == dev->tuner_type))
1228                 return -EINVAL;
1229         if (unlikely(f->tuner != 0))
1230                 return -EINVAL;
1231
1232 //      mutex_lock(&dev->lock);
1233         dev->freq = f->frequency;
1234         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1235 //      mutex_unlock(&dev->lock);
1236
1237         return 0;
1238 }
1239
1240 /* ------------------------------------------------------------------
1241         File operations for the device
1242    ------------------------------------------------------------------*/
1243
1244 static int tm6000_open(struct file *file)
1245 {
1246         struct video_device *vdev = video_devdata(file);
1247         struct tm6000_core *dev = video_drvdata(file);
1248         struct tm6000_fh *fh;
1249         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1250         int i,rc;
1251
1252         printk(KERN_INFO "tm6000: open called (dev=%s)\n",
1253                 video_device_node_name(vdev));
1254
1255         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1256                 video_device_node_name(vdev));
1257
1258
1259         /* If more than one user, mutex should be added */
1260         dev->users++;
1261
1262         dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1263                 video_device_node_name(vdev), v4l2_type_names[type],
1264                 dev->users);
1265
1266         /* allocate + initialize per filehandle data */
1267         fh = kzalloc(sizeof(*fh),GFP_KERNEL);
1268         if (NULL == fh) {
1269                 dev->users--;
1270                 return -ENOMEM;
1271         }
1272
1273         file->private_data = fh;
1274         fh->dev      = dev;
1275
1276         fh->type     = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1277         dev->fourcc  = format[0].fourcc;
1278
1279         fh->fmt      = format_by_fourcc(dev->fourcc);
1280
1281         tm6000_get_std_res (dev);
1282
1283         fh->width    = dev->width;
1284         fh->height   = dev->height;
1285
1286         dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1287                                                 "dev->vidq=0x%08lx\n",
1288                 (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq);
1289         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1290                                 "queued=%d\n",list_empty(&dev->vidq.queued));
1291         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1292                                 "active=%d\n",list_empty(&dev->vidq.active));
1293
1294         /* initialize hardware on analog mode */
1295         rc = tm6000_init_analog_mode(dev);
1296         if (rc < 0)
1297                 return rc;
1298
1299         if (dev->mode != TM6000_MODE_ANALOG) {
1300                 /* Put all controls at a sane state */
1301                 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1302                         qctl_regs[i] = tm6000_qctrl[i].default_value;
1303
1304                 dev->mode = TM6000_MODE_ANALOG;
1305         }
1306
1307         videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1308                         NULL, &dev->slock,
1309                         fh->type,
1310                         V4L2_FIELD_INTERLACED,
1311                         sizeof(struct tm6000_buffer), fh, NULL);
1312
1313         return 0;
1314 }
1315
1316 static ssize_t
1317 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1318 {
1319         struct tm6000_fh        *fh = file->private_data;
1320
1321         if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1322                 if (res_locked(fh->dev))
1323                         return -EBUSY;
1324
1325                 return videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1326                                         file->f_flags & O_NONBLOCK);
1327         }
1328         return 0;
1329 }
1330
1331 static unsigned int
1332 tm6000_poll(struct file *file, struct poll_table_struct *wait)
1333 {
1334         struct tm6000_fh        *fh = file->private_data;
1335         struct tm6000_buffer    *buf;
1336
1337         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1338                 return POLLERR;
1339
1340         if (res_get(fh->dev,fh)) {
1341                 /* streaming capture */
1342                 if (list_empty(&fh->vb_vidq.stream))
1343                         return POLLERR;
1344                 buf = list_entry(fh->vb_vidq.stream.next,struct tm6000_buffer,vb.stream);
1345         } else {
1346                 /* read() capture */
1347                 return videobuf_poll_stream(file, &fh->vb_vidq,
1348                                             wait);
1349         }
1350         poll_wait(file, &buf->vb.done, wait);
1351         if (buf->vb.state == VIDEOBUF_DONE ||
1352             buf->vb.state == VIDEOBUF_ERROR)
1353                 return POLLIN|POLLRDNORM;
1354         return 0;
1355 }
1356
1357 static int tm6000_release(struct file *file)
1358 {
1359         struct tm6000_fh         *fh = file->private_data;
1360         struct tm6000_core      *dev = fh->dev;
1361         struct video_device    *vdev = video_devdata(file);
1362
1363         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1364                 video_device_node_name(vdev), dev->users);
1365
1366         dev->users--;
1367
1368         if (!dev->users) {
1369                 tm6000_uninit_isoc(dev);
1370                 videobuf_mmap_free(&fh->vb_vidq);
1371         }
1372
1373         kfree (fh);
1374
1375         return 0;
1376 }
1377
1378 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1379 {
1380         struct tm6000_fh        *fh = file->private_data;
1381         int ret;
1382
1383         ret=videobuf_mmap_mapper(&fh->vb_vidq, vma);
1384
1385         return ret;
1386 }
1387
1388 static struct v4l2_file_operations tm6000_fops = {
1389         .owner          = THIS_MODULE,
1390         .open           = tm6000_open,
1391         .release        = tm6000_release,
1392         .ioctl          = video_ioctl2, /* V4L2 ioctl handler */
1393         .read           = tm6000_read,
1394         .poll           = tm6000_poll,
1395         .mmap           = tm6000_mmap,
1396 };
1397
1398 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1399         .vidioc_querycap          = vidioc_querycap,
1400         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1401         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1402         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1403         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1404         .vidioc_s_std             = vidioc_s_std,
1405         .vidioc_enum_input        = vidioc_enum_input,
1406         .vidioc_g_input           = vidioc_g_input,
1407         .vidioc_s_input           = vidioc_s_input,
1408         .vidioc_queryctrl         = vidioc_queryctrl,
1409         .vidioc_g_ctrl            = vidioc_g_ctrl,
1410         .vidioc_s_ctrl            = vidioc_s_ctrl,
1411         .vidioc_g_tuner           = vidioc_g_tuner,
1412         .vidioc_s_tuner           = vidioc_s_tuner,
1413         .vidioc_g_frequency       = vidioc_g_frequency,
1414         .vidioc_s_frequency       = vidioc_s_frequency,
1415         .vidioc_streamon          = vidioc_streamon,
1416         .vidioc_streamoff         = vidioc_streamoff,
1417         .vidioc_reqbufs           = vidioc_reqbufs,
1418         .vidioc_querybuf          = vidioc_querybuf,
1419         .vidioc_qbuf              = vidioc_qbuf,
1420         .vidioc_dqbuf             = vidioc_dqbuf,
1421 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1422         .vidiocgmbuf              = vidiocgmbuf,
1423 #endif
1424 };
1425
1426 static struct video_device tm6000_template = {
1427         .name           = "tm6000",
1428         .fops           = &tm6000_fops,
1429         .ioctl_ops      = &video_ioctl_ops,
1430         .release        = video_device_release,
1431         .tvnorms        = TM6000_STD,
1432         .current_norm   = V4L2_STD_NTSC_M,
1433 };
1434
1435 /* -----------------------------------------------------------------
1436         Initialization and module stuff
1437    ------------------------------------------------------------------*/
1438
1439 int tm6000_v4l2_register(struct tm6000_core *dev)
1440 {
1441         int ret = -1;
1442         struct video_device *vfd;
1443
1444         vfd = video_device_alloc();
1445         if(!vfd) {
1446                 return -ENOMEM;
1447         }
1448         dev->vfd = vfd;
1449
1450         /* init video dma queues */
1451         INIT_LIST_HEAD(&dev->vidq.active);
1452         INIT_LIST_HEAD(&dev->vidq.queued);
1453
1454         memcpy (dev->vfd, &tm6000_template, sizeof(*(dev->vfd)));
1455         dev->vfd->debug=tm6000_debug;
1456         vfd->v4l2_dev = &dev->v4l2_dev;
1457         video_set_drvdata(vfd, dev);
1458
1459         ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1460         printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1461         return ret;
1462 }
1463
1464 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1465 {
1466         video_unregister_device(dev->vfd);
1467
1468         return 0;
1469 }
1470
1471 int tm6000_v4l2_exit(void)
1472 {
1473         return 0;
1474 }
1475
1476 module_param(video_nr, int, 0);
1477 MODULE_PARM_DESC(video_nr,"Allow changing video device number");
1478
1479 module_param_named (debug, tm6000_debug, int, 0444);
1480 MODULE_PARM_DESC(debug,"activates debug info");
1481
1482 module_param(vid_limit,int,0644);
1483 MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes");
1484