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                                 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
 308                                 break;
 309                         case TM6000_URB_MSG_VBI:
 310                                 /* Need some code to copy vbi buffer */
 311                                 break;
 312                         case TM6000_URB_MSG_PTS:
 313                                 /* Need some code to copy pts */
 314                                 break;
 315                         }
 316                 }
 317                 if (ptr + pktsize > endp) {
 318                         /* End of URB packet, but cmd processing is not
 319                          * complete. Preserve the state for a next packet
 320                          */
 321                         dev->isoc_ctl.pos = pos + cpysize;
 322                         dev->isoc_ctl.size = size - cpysize;
 323                         dev->isoc_ctl.cmd = cmd;
 324                         dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
 325                         ptr += endp - ptr;
 326                 } else {
 327                         dev->isoc_ctl.cmd = 0;
 328                         ptr += pktsize;
 329                 }
 330         }
 331         return 0;
 332 }
 333
 334 /*
 335  * Identify the tm5600/6000 buffer header type and properly handles
 336  */
 337 static int copy_multiplexed(u8 *ptr, unsigned long len,
 338                         struct urb *urb)
 339 {
 340         struct tm6000_dmaqueue  *dma_q = urb->context;
 341         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 342         unsigned int pos=dev->isoc_ctl.pos,cpysize;
 343         int rc=1;
 344         struct tm6000_buffer *buf;
 345         char *outp = NULL;
 346
 347         get_next_buf(dma_q, &buf);
 348         if (buf)
 349                 outp = videobuf_to_vmalloc(&buf->vb);
 350
 351         if (!outp)
 352                 return 0;
 353
 354         while (len>0) {
 355                 cpysize=min(len,buf->vb.size-pos);
 356                 //printk("Copying %d bytes (max=%lu) from %p to %p[%u]\n",cpysize,(*buf)->vb.size,ptr,out_p,pos);
 357                 memcpy(&outp[pos], ptr, cpysize);
 358                 pos+=cpysize;
 359                 ptr+=cpysize;
 360                 len-=cpysize;
 361                 if (pos >= buf->vb.size) {
 362                         pos=0;
 363                         /* Announces that a new buffer were filled */
 364                         buffer_filled (dev, dma_q, buf);
 365                         dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
 366                         get_next_buf (dma_q, &buf);
 367                         if (!buf)
 368                                 break;
 369                         outp = videobuf_to_vmalloc(&(buf->vb));
 370                         if (!outp)
 371                                 return rc;
 372                         pos = 0;
 373                 }
 374         }
 375
 376         dev->isoc_ctl.pos=pos;
 377         return rc;
 378 }
 379
 380 static void inline print_err_status (struct tm6000_core *dev,
 381                                      int packet, int status)
 382 {
 383         char *errmsg = "Unknown";
 384
 385         switch(status) {
 386         case -ENOENT:
 387                 errmsg = "unlinked synchronuously";
 388                 break;
 389         case -ECONNRESET:
 390                 errmsg = "unlinked asynchronuously";
 391                 break;
 392         case -ENOSR:
 393                 errmsg = "Buffer error (overrun)";
 394                 break;
 395         case -EPIPE:
 396                 errmsg = "Stalled (device not responding)";
 397                 break;
 398         case -EOVERFLOW:
 399                 errmsg = "Babble (bad cable?)";
 400                 break;
 401         case -EPROTO:
 402                 errmsg = "Bit-stuff error (bad cable?)";
 403                 break;
 404         case -EILSEQ:
 405                 errmsg = "CRC/Timeout (could be anything)";
 406                 break;
 407         case -ETIME:
 408                 errmsg = "Device does not respond";
 409                 break;
 410         }
 411         if (packet<0) {
 412                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
 413                         status, errmsg);
 414         } else {
 415                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
 416                         packet, status, errmsg);
 417         }
 418 }
 419
 420
 421 /*
 422  * Controls the isoc copy of each urb packet
 423  */
 424 static inline int tm6000_isoc_copy(struct urb *urb)
 425 {
 426         struct tm6000_dmaqueue  *dma_q = urb->context;
 427         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 428         int i, len=0, rc=1, status;
 429         char *p;
 430
 431         if (urb->status < 0) {
 432                 print_err_status (dev, -1, urb->status);
 433                 return 0;
 434         }
 435
 436         for (i = 0; i < urb->number_of_packets; i++) {
 437                 status = urb->iso_frame_desc[i].status;
 438
 439                 if (status<0) {
 440                         print_err_status (dev,i,status);
 441                         continue;
 442                 }
 443
 444                 len = urb->iso_frame_desc[i].actual_length;
 445
 446                 if (len > 0) {
 447                         p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 448                         if (!urb->iso_frame_desc[i].status) {
 449                                 if ((dev->fourcc)==V4L2_PIX_FMT_TM6000) {
 450                                         rc=copy_multiplexed(p, len, urb);
 451                                         if (rc<=0)
 452                                                 return rc;
 453                                 } else {
 454                                         copy_streams(p, len, urb);
 455                                 }
 456                         }
 457                 }
 458         }
 459         return rc;
 460 }
 461
 462 /* ------------------------------------------------------------------
 463         URB control
 464    ------------------------------------------------------------------*/
 465
 466 /*
 467  * IRQ callback, called by URB callback
 468  */
 469 static void tm6000_irq_callback(struct urb *urb)
 470 {
 471         struct tm6000_dmaqueue  *dma_q = urb->context;
 472         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 473         int i;
 474
 475         if (!dev)
 476                 return;
 477
 478         spin_lock(&dev->slock);
 479         tm6000_isoc_copy(urb);
 480         spin_unlock(&dev->slock);
 481
 482         /* Reset urb buffers */
 483         for (i = 0; i < urb->number_of_packets; i++) {
 484                 urb->iso_frame_desc[i].status = 0;
 485                 urb->iso_frame_desc[i].actual_length = 0;
 486         }
 487
 488         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 489         if (urb->status)
 490                 tm6000_err("urb resubmit failed (error=%i)\n",
 491                         urb->status);
 492 }
 493
 494 /*
 495  * Stop and Deallocate URBs
 496  */
 497 static void tm6000_uninit_isoc(struct tm6000_core *dev)
 498 {
 499         struct urb *urb;
 500         int i;
 501
 502         dev->isoc_ctl.buf = NULL;
 503         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 504                 urb=dev->isoc_ctl.urb[i];
 505                 if (urb) {
 506                         usb_kill_urb(urb);
 507                         usb_unlink_urb(urb);
 508                         if (dev->isoc_ctl.transfer_buffer[i]) {
 509                                 usb_free_coherent(dev->udev,
 510                                                 urb->transfer_buffer_length,
 511                                                 dev->isoc_ctl.transfer_buffer[i],
 512                                                 urb->transfer_dma);
 513                         }
 514                         usb_free_urb(urb);
 515                         dev->isoc_ctl.urb[i] = NULL;
 516                 }
 517                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 518         }
 519
 520         kfree (dev->isoc_ctl.urb);
 521         kfree (dev->isoc_ctl.transfer_buffer);
 522
 523         dev->isoc_ctl.urb=NULL;
 524         dev->isoc_ctl.transfer_buffer=NULL;
 525         dev->isoc_ctl.num_bufs = 0;
 526 }
 527
 528 /*
 529  * Allocate URBs and start IRQ
 530  */
 531 static int tm6000_prepare_isoc(struct tm6000_core *dev, unsigned int framesize)
 532 {
 533         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 534         int i, j, sb_size, pipe, size, max_packets, num_bufs = 8;
 535         struct urb *urb;
 536
 537         /* De-allocates all pending stuff */
 538         tm6000_uninit_isoc(dev);
 539
 540         usb_set_interface(dev->udev,
 541                           dev->isoc_in.bInterfaceNumber,
 542                           dev->isoc_in.bAlternateSetting);
 543
 544         pipe = usb_rcvisocpipe(dev->udev,
 545                                dev->isoc_in.endp->desc.bEndpointAddress &
 546                                USB_ENDPOINT_NUMBER_MASK);
 547
 548         size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
 549
 550         if (size > dev->isoc_in.maxsize)
 551                 size = dev->isoc_in.maxsize;
 552
 553         dev->isoc_ctl.max_pkt_size = size;
 554
 555         max_packets = ( framesize + size - 1) / size;
 556
 557         if (max_packets > TM6000_MAX_ISO_PACKETS)
 558                 max_packets = TM6000_MAX_ISO_PACKETS;
 559
 560         sb_size = max_packets * size;
 561
 562         dev->isoc_ctl.num_bufs = num_bufs;
 563
 564         dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 565         if (!dev->isoc_ctl.urb) {
 566                 tm6000_err("cannot alloc memory for usb buffers\n");
 567                 return -ENOMEM;
 568         }
 569
 570         dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
 571                                    GFP_KERNEL);
 572         if (!dev->isoc_ctl.transfer_buffer) {
 573                 tm6000_err("cannot allocate memory for usbtransfer\n");
 574                 kfree(dev->isoc_ctl.urb);
 575                 return -ENOMEM;
 576         }
 577
 578         dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
 579                     " (%d bytes) of %d bytes each to handle %u size\n",
 580                     max_packets, num_bufs, sb_size,
 581                     dev->isoc_in.maxsize, size);
 582
 583         /* allocate urbs and transfer buffers */
 584         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 585                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 586                 if (!urb) {
 587                         tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
 588                         tm6000_uninit_isoc(dev);
 589                         usb_free_urb(urb);
 590                         return -ENOMEM;
 591                 }
 592                 dev->isoc_ctl.urb[i] = urb;
 593
 594                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
 595                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 596                 if (!dev->isoc_ctl.transfer_buffer[i]) {
 597                         tm6000_err ("unable to allocate %i bytes for transfer"
 598                                         " buffer %i%s\n",
 599                                         sb_size, i,
 600                                         in_interrupt()?" while in int":"");
 601                         tm6000_uninit_isoc(dev);
 602                         return -ENOMEM;
 603                 }
 604                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
 605
 606                 usb_fill_bulk_urb(urb, dev->udev, pipe,
 607                                   dev->isoc_ctl.transfer_buffer[i], sb_size,
 608                                   tm6000_irq_callback, dma_q);
 609                 urb->interval = dev->isoc_in.endp->desc.bInterval;
 610                 urb->number_of_packets = max_packets;
 611                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 612
 613                 for (j = 0; j < max_packets; j++) {
 614                         urb->iso_frame_desc[j].offset = size * j;
 615                         urb->iso_frame_desc[j].length = size;
 616                 }
 617         }
 618
 619         return 0;
 620 }
 621
 622 static int tm6000_start_thread( struct tm6000_core *dev)
 623 {
 624         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 625         int i;
 626
 627         dma_q->frame=0;
 628         dma_q->ini_jiffies=jiffies;
 629
 630         init_waitqueue_head(&dma_q->wq);
 631
 632         /* submit urbs and enables IRQ */
 633         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 634                 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 635                 if (rc) {
 636                         tm6000_err("submit of urb %i failed (error=%i)\n", i,
 637                                    rc);
 638                         tm6000_uninit_isoc(dev);
 639                         return rc;
 640                 }
 641         }
 642
 643         return 0;
 644 }
 645
 646 /* ------------------------------------------------------------------
 647         Videobuf operations
 648    ------------------------------------------------------------------*/
 649
 650 static int
 651 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 652 {
 653         struct tm6000_fh *fh = vq->priv_data;
 654
 655         *size = fh->fmt->depth * fh->width * fh->height >> 3;
 656         if (0 == *count)
 657                 *count = TM6000_DEF_BUF;
 658
 659         if (*count < TM6000_MIN_BUF) {
 660                 *count=TM6000_MIN_BUF;
 661         }
 662
 663         while (*size * *count > vid_limit * 1024 * 1024)
 664                 (*count)--;
 665
 666         return 0;
 667 }
 668
 669 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
 670 {
 671         struct tm6000_fh *fh = vq->priv_data;
 672         struct tm6000_core   *dev = fh->dev;
 673         unsigned long flags;
 674
 675         if (in_interrupt())
 676                 BUG();
 677
 678         /* We used to wait for the buffer to finish here, but this didn't work
 679            because, as we were keeping the state as VIDEOBUF_QUEUED,
 680            videobuf_queue_cancel marked it as finished for us.
 681            (Also, it could wedge forever if the hardware was misconfigured.)
 682
 683            This should be safe; by the time we get here, the buffer isn't
 684            queued anymore. If we ever start marking the buffers as
 685            VIDEOBUF_ACTIVE, it won't be, though.
 686         */
 687         spin_lock_irqsave(&dev->slock, flags);
 688         if (dev->isoc_ctl.buf == buf)
 689                 dev->isoc_ctl.buf = NULL;
 690         spin_unlock_irqrestore(&dev->slock, flags);
 691
 692         videobuf_vmalloc_free(&buf->vb);
 693         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 694 }
 695
 696 static int
 697 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 698                                                 enum v4l2_field field)
 699 {
 700         struct tm6000_fh     *fh  = vq->priv_data;
 701         struct tm6000_buffer *buf = container_of(vb,struct tm6000_buffer,vb);
 702         struct tm6000_core   *dev = fh->dev;
 703         int rc = 0, urb_init = 0;
 704
 705         BUG_ON(NULL == fh->fmt);
 706
 707
 708         /* FIXME: It assumes depth=2 */
 709         /* The only currently supported format is 16 bits/pixel */
 710         buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
 711         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 712                 return -EINVAL;
 713
 714         if (buf->fmt       != fh->fmt    ||
 715             buf->vb.width  != fh->width  ||
 716             buf->vb.height != fh->height ||
 717             buf->vb.field  != field) {
 718                 buf->fmt       = fh->fmt;
 719                 buf->vb.width  = fh->width;
 720                 buf->vb.height = fh->height;
 721                 buf->vb.field  = field;
 722                 buf->vb.state = VIDEOBUF_NEEDS_INIT;
 723         }
 724
 725         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 726                 if (0 != (rc = videobuf_iolock(vq, &buf->vb, NULL)))
 727                         goto fail;
 728                 urb_init = 1;
 729         }
 730
 731         if (!dev->isoc_ctl.num_bufs)
 732                 urb_init = 1;
 733
 734         if (urb_init) {
 735                 rc = tm6000_prepare_isoc(dev, buf->vb.size);
 736                 if (rc < 0)
 737                         goto fail;
 738
 739                 rc = tm6000_start_thread(dev);
 740                 if (rc < 0)
 741                         goto fail;
 742
 743         }
 744
 745         buf->vb.state = VIDEOBUF_PREPARED;
 746         return 0;
 747
 748 fail:
 749         free_buffer(vq, buf);
 750         return rc;
 751 }
 752
 753 static void
 754 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 755 {
 756         struct tm6000_buffer    *buf     = container_of(vb,struct tm6000_buffer,vb);
 757         struct tm6000_fh        *fh      = vq->priv_data;
 758         struct tm6000_core      *dev     = fh->dev;
 759         struct tm6000_dmaqueue  *vidq    = &dev->vidq;
 760
 761         buf->vb.state = VIDEOBUF_QUEUED;
 762         list_add_tail(&buf->vb.queue, &vidq->active);
 763 }
 764
 765 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 766 {
 767         struct tm6000_buffer   *buf  = container_of(vb,struct tm6000_buffer,vb);
 768
 769         free_buffer(vq,buf);
 770 }
 771
 772 static struct videobuf_queue_ops tm6000_video_qops = {
 773         .buf_setup      = buffer_setup,
 774         .buf_prepare    = buffer_prepare,
 775         .buf_queue      = buffer_queue,
 776         .buf_release    = buffer_release,
 777 };
 778
 779 /* ------------------------------------------------------------------
 780         IOCTL handling
 781    ------------------------------------------------------------------*/
 782
 783 static int res_get(struct tm6000_core *dev, struct tm6000_fh *fh)
 784 {
 785         /* is it free? */
 786         mutex_lock(&dev->lock);
 787         if (dev->resources) {
 788                 /* no, someone else uses it */
 789                 mutex_unlock(&dev->lock);
 790                 return 0;
 791         }
 792         /* it's free, grab it */
 793         dev->resources =1;
 794         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
 795         mutex_unlock(&dev->lock);
 796         return 1;
 797 }
 798
 799 static int res_locked(struct tm6000_core *dev)
 800 {
 801         return (dev->resources);
 802 }
 803
 804 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
 805 {
 806         mutex_lock(&dev->lock);
 807         dev->resources = 0;
 808         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
 809         mutex_unlock(&dev->lock);
 810 }
 811
 812 /* ------------------------------------------------------------------
 813         IOCTL vidioc handling
 814    ------------------------------------------------------------------*/
 815 static int vidioc_querycap (struct file *file, void  *priv,
 816                                         struct v4l2_capability *cap)
 817 {
 818         //      struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 819
 820         strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
 821         strlcpy(cap->card,"Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
 822         //      strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
 823         cap->version = TM6000_VERSION;
 824         cap->capabilities =     V4L2_CAP_VIDEO_CAPTURE |
 825                                 V4L2_CAP_STREAMING     |
 826                                 V4L2_CAP_TUNER         |
 827                                 V4L2_CAP_READWRITE;
 828         return 0;
 829 }
 830
 831 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 832                                         struct v4l2_fmtdesc *f)
 833 {
 834         if (unlikely(f->index >= ARRAY_SIZE(format)))
 835                 return -EINVAL;
 836
 837         strlcpy(f->description,format[f->index].name,sizeof(f->description));
 838         f->pixelformat = format[f->index].fourcc;
 839         return 0;
 840 }
 841
 842 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 843                                         struct v4l2_format *f)
 844 {
 845         struct tm6000_fh  *fh=priv;
 846
 847         f->fmt.pix.width        = fh->width;
 848         f->fmt.pix.height       = fh->height;
 849         f->fmt.pix.field        = fh->vb_vidq.field;
 850         f->fmt.pix.pixelformat  = fh->fmt->fourcc;
 851         f->fmt.pix.bytesperline =
 852                 (f->fmt.pix.width * fh->fmt->depth) >> 3;
 853         f->fmt.pix.sizeimage =
 854                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 855
 856         return (0);
 857 }
 858
 859 static struct tm6000_fmt* format_by_fourcc(unsigned int fourcc)
 860 {
 861         unsigned int i;
 862
 863         for (i = 0; i < ARRAY_SIZE(format); i++)
 864                 if (format[i].fourcc == fourcc)
 865                         return format+i;
 866         return NULL;
 867 }
 868
 869 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
 870                         struct v4l2_format *f)
 871 {
 872         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 873         struct tm6000_fmt *fmt;
 874         enum v4l2_field field;
 875
 876         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 877         if (NULL == fmt) {
 878                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
 879                                 " invalid.\n", f->fmt.pix.pixelformat);
 880                 return -EINVAL;
 881         }
 882
 883         field = f->fmt.pix.field;
 884
 885         if (field == V4L2_FIELD_ANY) {
 886 //              field=V4L2_FIELD_INTERLACED;
 887                 field=V4L2_FIELD_SEQ_TB;
 888         } else if (V4L2_FIELD_INTERLACED != field) {
 889                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
 890                 return -EINVAL;
 891         }
 892
 893         tm6000_get_std_res (dev);
 894
 895         f->fmt.pix.width  = dev->width;
 896         f->fmt.pix.height = dev->height;
 897
 898         f->fmt.pix.width &= ~0x01;
 899
 900         f->fmt.pix.field = field;
 901
 902         f->fmt.pix.bytesperline =
 903                 (f->fmt.pix.width * fmt->depth) >> 3;
 904         f->fmt.pix.sizeimage =
 905                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 906
 907         return 0;
 908 }
 909
 910 /*FIXME: This seems to be generic enough to be at videodev2 */
 911 static int vidioc_s_fmt_vid_cap (struct file *file, void *priv,
 912                                         struct v4l2_format *f)
 913 {
 914         struct tm6000_fh  *fh=priv;
 915         struct tm6000_core *dev = fh->dev;
 916         int ret = vidioc_try_fmt_vid_cap(file,fh,f);
 917         if (ret < 0)
 918                 return (ret);
 919
 920         fh->fmt           = format_by_fourcc(f->fmt.pix.pixelformat);
 921         fh->width         = f->fmt.pix.width;
 922         fh->height        = f->fmt.pix.height;
 923         fh->vb_vidq.field = f->fmt.pix.field;
 924         fh->type          = f->type;
 925
 926         dev->fourcc       = f->fmt.pix.pixelformat;
 927
 928         tm6000_set_fourcc_format(dev);
 929
 930         return (0);
 931 }
 932
 933 static int vidioc_reqbufs (struct file *file, void *priv,
 934                            struct v4l2_requestbuffers *p)
 935 {
 936         struct tm6000_fh  *fh=priv;
 937
 938         return (videobuf_reqbufs(&fh->vb_vidq, p));
 939 }
 940
 941 static int vidioc_querybuf (struct file *file, void *priv,
 942                             struct v4l2_buffer *p)
 943 {
 944         struct tm6000_fh  *fh=priv;
 945
 946         return (videobuf_querybuf(&fh->vb_vidq, p));
 947 }
 948
 949 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *p)
 950 {
 951         struct tm6000_fh  *fh=priv;
 952
 953         return (videobuf_qbuf(&fh->vb_vidq, p));
 954 }
 955
 956 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *p)
 957 {
 958         struct tm6000_fh  *fh=priv;
 959
 960         return (videobuf_dqbuf(&fh->vb_vidq, p,
 961                                 file->f_flags & O_NONBLOCK));
 962 }
 963
 964 #ifdef CONFIG_VIDEO_V4L1_COMPAT
 965 static int vidiocgmbuf (struct file *file, void *priv, struct video_mbuf *mbuf)
 966 {
 967         struct tm6000_fh  *fh=priv;
 968
 969         return videobuf_cgmbuf (&fh->vb_vidq, mbuf, 8);
 970 }
 971 #endif
 972
 973 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 974 {
 975         struct tm6000_fh  *fh=priv;
 976         struct tm6000_core *dev    = fh->dev;
 977
 978         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 979                 return -EINVAL;
 980         if (i != fh->type)
 981                 return -EINVAL;
 982
 983         if (!res_get(dev,fh))
 984                 return -EBUSY;
 985         return (videobuf_streamon(&fh->vb_vidq));
 986 }
 987
 988 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
 989 {
 990         struct tm6000_fh  *fh=priv;
 991         struct tm6000_core *dev    = fh->dev;
 992
 993         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 994                 return -EINVAL;
 995         if (i != fh->type)
 996                 return -EINVAL;
 997
 998         videobuf_streamoff(&fh->vb_vidq);
 999         res_free(dev,fh);
1000
1001         return (0);
1002 }
1003
1004 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *norm)
1005 {
1006         int rc=0;
1007         struct tm6000_fh   *fh=priv;
1008         struct tm6000_core *dev = fh->dev;
1009
1010         rc=tm6000_set_standard (dev, norm);
1011
1012         fh->width  = dev->width;
1013         fh->height = dev->height;
1014
1015         if (rc<0)
1016                 return rc;
1017
1018         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1019
1020         return 0;
1021 }
1022
1023 static int vidioc_enum_input (struct file *file, void *priv,
1024                                 struct v4l2_input *inp)
1025 {
1026         switch (inp->index) {
1027         case TM6000_INPUT_TV:
1028                 inp->type = V4L2_INPUT_TYPE_TUNER;
1029                 strcpy(inp->name,"Television");
1030                 break;
1031         case TM6000_INPUT_COMPOSITE:
1032                 inp->type = V4L2_INPUT_TYPE_CAMERA;
1033                 strcpy(inp->name,"Composite");
1034                 break;
1035         case TM6000_INPUT_SVIDEO:
1036                 inp->type = V4L2_INPUT_TYPE_CAMERA;
1037                 strcpy(inp->name,"S-Video");
1038                 break;
1039         default:
1040                 return -EINVAL;
1041         }
1042         inp->std = TM6000_STD;
1043
1044         return 0;
1045 }
1046
1047 static int vidioc_g_input (struct file *file, void *priv, unsigned int *i)
1048 {
1049         struct tm6000_fh   *fh=priv;
1050         struct tm6000_core *dev = fh->dev;
1051
1052         *i=dev->input;
1053
1054         return 0;
1055 }
1056 static int vidioc_s_input (struct file *file, void *priv, unsigned int i)
1057 {
1058         struct tm6000_fh   *fh=priv;
1059         struct tm6000_core *dev = fh->dev;
1060         int rc=0;
1061         char buf[1];
1062
1063         switch (i) {
1064         case TM6000_INPUT_TV:
1065                 dev->input=i;
1066                 *buf=0;
1067                 break;
1068         case TM6000_INPUT_COMPOSITE:
1069         case TM6000_INPUT_SVIDEO:
1070                 dev->input=i;
1071                 *buf=1;
1072                 break;
1073         default:
1074                 return -EINVAL;
1075         }
1076         rc=tm6000_read_write_usb (dev, USB_DIR_OUT | USB_TYPE_VENDOR,
1077                                REQ_03_SET_GET_MCU_PIN, 0x03, 1, buf, 1);
1078
1079         if (!rc) {
1080                 dev->input=i;
1081                 rc=vidioc_s_std (file, priv, &dev->vfd->current_norm);
1082         }
1083
1084         return (rc);
1085 }
1086
1087         /* --- controls ---------------------------------------------- */
1088 static int vidioc_queryctrl (struct file *file, void *priv,
1089                                 struct v4l2_queryctrl *qc)
1090 {
1091         int i;
1092
1093         for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1094                 if (qc->id && qc->id == tm6000_qctrl[i].id) {
1095                         memcpy(qc, &(tm6000_qctrl[i]),
1096                                 sizeof(*qc));
1097                         return (0);
1098                 }
1099
1100         return -EINVAL;
1101 }
1102
1103 static int vidioc_g_ctrl (struct file *file, void *priv,
1104                                 struct v4l2_control *ctrl)
1105 {
1106         struct tm6000_fh  *fh=priv;
1107         struct tm6000_core *dev    = fh->dev;
1108         int  val;
1109
1110         /* FIXME: Probably, those won't work! Maybe we need shadow regs */
1111         switch (ctrl->id) {
1112         case V4L2_CID_CONTRAST:
1113                 val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
1114                 break;
1115         case V4L2_CID_BRIGHTNESS:
1116                 val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
1117                 return 0;
1118         case V4L2_CID_SATURATION:
1119                 val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
1120                 return 0;
1121         case V4L2_CID_HUE:
1122                 val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
1123                 return 0;
1124         default:
1125                 return -EINVAL;
1126         }
1127
1128         if (val<0)
1129                 return val;
1130
1131         ctrl->value=val;
1132
1133         return 0;
1134 }
1135 static int vidioc_s_ctrl (struct file *file, void *priv,
1136                                 struct v4l2_control *ctrl)
1137 {
1138         struct tm6000_fh   *fh  =priv;
1139         struct tm6000_core *dev = fh->dev;
1140         u8  val=ctrl->value;
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 int vidioc_g_tuner (struct file *file, void *priv,
1160                                 struct v4l2_tuner *t)
1161 {
1162         struct tm6000_fh   *fh  =priv;
1163         struct tm6000_core *dev = fh->dev;
1164
1165         if (unlikely(UNSET == dev->tuner_type))
1166                 return -EINVAL;
1167         if (0 != t->index)
1168                 return -EINVAL;
1169
1170         strcpy(t->name, "Television");
1171         t->type       = V4L2_TUNER_ANALOG_TV;
1172         t->capability = V4L2_TUNER_CAP_NORM;
1173         t->rangehigh  = 0xffffffffUL;
1174         t->rxsubchans = V4L2_TUNER_SUB_MONO;
1175
1176         return 0;
1177 }
1178
1179 static int vidioc_s_tuner (struct file *file, void *priv,
1180                                 struct v4l2_tuner *t)
1181 {
1182         struct tm6000_fh   *fh  =priv;
1183         struct tm6000_core *dev = fh->dev;
1184
1185         if (UNSET == dev->tuner_type)
1186                 return -EINVAL;
1187         if (0 != t->index)
1188                 return -EINVAL;
1189
1190         return 0;
1191 }
1192
1193 static int vidioc_g_frequency (struct file *file, void *priv,
1194                                 struct v4l2_frequency *f)
1195 {
1196         struct tm6000_fh   *fh  =priv;
1197         struct tm6000_core *dev = fh->dev;
1198
1199         if (unlikely(UNSET == dev->tuner_type))
1200                 return -EINVAL;
1201
1202         f->type = V4L2_TUNER_ANALOG_TV;
1203         f->frequency = dev->freq;
1204
1205         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1206
1207         return 0;
1208 }
1209
1210 static int vidioc_s_frequency (struct file *file, void *priv,
1211                                 struct v4l2_frequency *f)
1212 {
1213         struct tm6000_fh   *fh  =priv;
1214         struct tm6000_core *dev = fh->dev;
1215
1216         if (unlikely(f->type != V4L2_TUNER_ANALOG_TV))
1217                 return -EINVAL;
1218
1219         if (unlikely(UNSET == dev->tuner_type))
1220                 return -EINVAL;
1221         if (unlikely(f->tuner != 0))
1222                 return -EINVAL;
1223
1224 //      mutex_lock(&dev->lock);
1225         dev->freq = f->frequency;
1226         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1227 //      mutex_unlock(&dev->lock);
1228
1229         return 0;
1230 }
1231
1232 /* ------------------------------------------------------------------
1233         File operations for the device
1234    ------------------------------------------------------------------*/
1235
1236 static int tm6000_open(struct file *file)
1237 {
1238         struct video_device *vdev = video_devdata(file);
1239         struct tm6000_core *dev = video_drvdata(file);
1240         struct tm6000_fh *fh;
1241         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1242         int i,rc;
1243
1244         printk(KERN_INFO "tm6000: open called (dev=%s)\n",
1245                 video_device_node_name(vdev));
1246
1247         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1248                 video_device_node_name(vdev));
1249
1250
1251         /* If more than one user, mutex should be added */
1252         dev->users++;
1253
1254         dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1255                 video_device_node_name(vdev), v4l2_type_names[type],
1256                 dev->users);
1257
1258         /* allocate + initialize per filehandle data */
1259         fh = kzalloc(sizeof(*fh),GFP_KERNEL);
1260         if (NULL == fh) {
1261                 dev->users--;
1262                 return -ENOMEM;
1263         }
1264
1265         file->private_data = fh;
1266         fh->dev      = dev;
1267
1268         fh->type     = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1269         dev->fourcc  = format[0].fourcc;
1270
1271         fh->fmt      = format_by_fourcc(dev->fourcc);
1272
1273         tm6000_get_std_res (dev);
1274
1275         fh->width    = dev->width;
1276         fh->height   = dev->height;
1277
1278         dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1279                                                 "dev->vidq=0x%08lx\n",
1280                 (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq);
1281         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1282                                 "queued=%d\n",list_empty(&dev->vidq.queued));
1283         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1284                                 "active=%d\n",list_empty(&dev->vidq.active));
1285
1286         /* initialize hardware on analog mode */
1287         if (dev->mode!=TM6000_MODE_ANALOG) {
1288                 rc=tm6000_init_analog_mode (dev);
1289                 if (rc<0)
1290                         return rc;
1291
1292                 /* Put all controls at a sane state */
1293                 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1294                         qctl_regs[i] =tm6000_qctrl[i].default_value;
1295
1296                 dev->mode=TM6000_MODE_ANALOG;
1297         }
1298
1299         videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1300                         NULL, &dev->slock,
1301                         fh->type,
1302                         V4L2_FIELD_INTERLACED,
1303                         sizeof(struct tm6000_buffer),fh);
1304
1305         return 0;
1306 }
1307
1308 static ssize_t
1309 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1310 {
1311         struct tm6000_fh        *fh = file->private_data;
1312
1313         if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1314                 if (res_locked(fh->dev))
1315                         return -EBUSY;
1316
1317                 return videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1318                                         file->f_flags & O_NONBLOCK);
1319         }
1320         return 0;
1321 }
1322
1323 static unsigned int
1324 tm6000_poll(struct file *file, struct poll_table_struct *wait)
1325 {
1326         struct tm6000_fh        *fh = file->private_data;
1327         struct tm6000_buffer    *buf;
1328
1329         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1330                 return POLLERR;
1331
1332         if (res_get(fh->dev,fh)) {
1333                 /* streaming capture */
1334                 if (list_empty(&fh->vb_vidq.stream))
1335                         return POLLERR;
1336                 buf = list_entry(fh->vb_vidq.stream.next,struct tm6000_buffer,vb.stream);
1337         } else {
1338                 /* read() capture */
1339                 return videobuf_poll_stream(file, &fh->vb_vidq,
1340                                             wait);
1341         }
1342         poll_wait(file, &buf->vb.done, wait);
1343         if (buf->vb.state == VIDEOBUF_DONE ||
1344             buf->vb.state == VIDEOBUF_ERROR)
1345                 return POLLIN|POLLRDNORM;
1346         return 0;
1347 }
1348
1349 static int tm6000_release(struct file *file)
1350 {
1351         struct tm6000_fh         *fh = file->private_data;
1352         struct tm6000_core      *dev = fh->dev;
1353         struct video_device    *vdev = video_devdata(file);
1354
1355         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1356                 video_device_node_name(vdev), dev->users);
1357
1358         dev->users--;
1359
1360         if (!dev->users) {
1361                 tm6000_uninit_isoc(dev);
1362                 videobuf_mmap_free(&fh->vb_vidq);
1363         }
1364
1365         kfree (fh);
1366
1367         return 0;
1368 }
1369
1370 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1371 {
1372         struct tm6000_fh        *fh = file->private_data;
1373         int ret;
1374
1375         ret=videobuf_mmap_mapper(&fh->vb_vidq, vma);
1376
1377         return ret;
1378 }
1379
1380 static struct v4l2_file_operations tm6000_fops = {
1381         .owner          = THIS_MODULE,
1382         .open           = tm6000_open,
1383         .release        = tm6000_release,
1384         .ioctl          = video_ioctl2, /* V4L2 ioctl handler */
1385         .read           = tm6000_read,
1386         .poll           = tm6000_poll,
1387         .mmap           = tm6000_mmap,
1388 };
1389
1390 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1391         .vidioc_querycap          = vidioc_querycap,
1392         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1393         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1394         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1395         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1396         .vidioc_s_std             = vidioc_s_std,
1397         .vidioc_enum_input        = vidioc_enum_input,
1398         .vidioc_g_input           = vidioc_g_input,
1399         .vidioc_s_input           = vidioc_s_input,
1400         .vidioc_queryctrl         = vidioc_queryctrl,
1401         .vidioc_g_ctrl            = vidioc_g_ctrl,
1402         .vidioc_s_ctrl            = vidioc_s_ctrl,
1403         .vidioc_g_tuner           = vidioc_g_tuner,
1404         .vidioc_s_tuner           = vidioc_s_tuner,
1405         .vidioc_g_frequency       = vidioc_g_frequency,
1406         .vidioc_s_frequency       = vidioc_s_frequency,
1407         .vidioc_streamon          = vidioc_streamon,
1408         .vidioc_streamoff         = vidioc_streamoff,
1409         .vidioc_reqbufs           = vidioc_reqbufs,
1410         .vidioc_querybuf          = vidioc_querybuf,
1411         .vidioc_qbuf              = vidioc_qbuf,
1412         .vidioc_dqbuf             = vidioc_dqbuf,
1413 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1414         .vidiocgmbuf              = vidiocgmbuf,
1415 #endif
1416 };
1417
1418 static struct video_device tm6000_template = {
1419         .name           = "tm6000",
1420         .fops           = &tm6000_fops,
1421         .ioctl_ops      = &video_ioctl_ops,
1422         .release        = video_device_release,
1423         .tvnorms        = TM6000_STD,
1424         .current_norm   = V4L2_STD_NTSC_M,
1425 };
1426
1427 /* -----------------------------------------------------------------
1428         Initialization and module stuff
1429    ------------------------------------------------------------------*/
1430
1431 int tm6000_v4l2_register(struct tm6000_core *dev)
1432 {
1433         int ret = -1;
1434         struct video_device *vfd;
1435
1436         vfd = video_device_alloc();
1437         if(!vfd) {
1438                 return -ENOMEM;
1439         }
1440         dev->vfd = vfd;
1441
1442         /* init video dma queues */
1443         INIT_LIST_HEAD(&dev->vidq.active);
1444         INIT_LIST_HEAD(&dev->vidq.queued);
1445
1446         memcpy (dev->vfd, &tm6000_template, sizeof(*(dev->vfd)));
1447         dev->vfd->debug=tm6000_debug;
1448         vfd->v4l2_dev = &dev->v4l2_dev;
1449         video_set_drvdata(vfd, dev);
1450
1451         ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1452         printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1453         return ret;
1454 }
1455
1456 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1457 {
1458         video_unregister_device(dev->vfd);
1459
1460         return 0;
1461 }
1462
1463 int tm6000_v4l2_exit(void)
1464 {
1465         return 0;
1466 }
1467
1468 module_param(video_nr, int, 0);
1469 MODULE_PARM_DESC(video_nr,"Allow changing video device number");
1470
1471 module_param_named (debug, tm6000_debug, int, 0444);
1472 MODULE_PARM_DESC(debug,"activates debug info");
1473
1474 module_param(vid_limit,int,0644);
1475 MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes");
1476